/* 全局样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #6366f1;
    --primary-hover: #4f46e5;
    --secondary-color: #64748b;
    --success-color: #22c55e;
    --error-color: #ef4444;
    --bg-color: #f8fafc;
    --card-bg: #ffffff;
    --text-primary: #1e293b;
    --text-secondary: #64748b;
    --border-color: #e2e8f0;
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -2px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.1);
    --right-panel-width: 380px;
    --canvas-control-gap: 20px;
    --reference-image-pick-cursor: url("data:image/svg+xml,%3Csvg%20width='32'%20height='32'%20viewBox='0%200%201024%201024'%20version='1.1'%20xmlns='http://www.w3.org/2000/svg'%3E%3Cpath%20d='M512%20170.666667l341.333333%20426.666666H640v256H384V597.333333H170.666667L512%20170.666667z'/%3E%3C/svg%3E") 16 5, crosshair;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background: var(--bg-color);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
}

.container {
    max-width: 800px;
    margin: 0 auto;
    padding: 40px 20px;
}

/* 页面包装器 - 左右布局 */
.page-wrapper {
    max-width: 1400px;
    margin: 0 auto;
    padding: 30px 40px;
}

/* 左右布局主容器 */
.main-layout {
    display: flex;
    gap: 30px;
    align-items: flex-start;
}

/* 左侧面板 - 截图功能框（固定宽度） */
.left-panel {
    width: 380px;
    flex-shrink: 0;
}

/* 右侧面板 - 图片生成器（自适应） */
.right-panel {
    flex: 1;
    min-width: 0;
    display: flex;
    flex-direction: column;
    gap: 24px;
}

/* 头部 */
header {
    text-align: center;
    margin-bottom: 30px;
}

header h1 {
    font-size: 2.2rem;
    font-weight: 700;
    background: linear-gradient(135deg, #6366f1, #8b5cf6);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 8px;
}

.subtitle {
    color: var(--text-secondary);
    font-size: 1rem;
}

/* 主内容 */
main {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

section {
    background: var(--card-bg);
    border-radius: 16px;
    padding: 24px;
    box-shadow: var(--shadow);
}

section h2 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 16px;
    color: var(--text-primary);
}

/* 按钮样式 */
.btn {
    padding: 12px 24px;
    border: none;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.btn-primary {
    background: var(--primary-color);
    color: white;
}

.btn-primary:hover:not(:disabled) {
    background: var(--primary-hover);
}

.btn-secondary {
    background: var(--bg-color);
    color: var(--text-primary);
    border: 2px solid var(--border-color);
}

.btn-secondary:hover:not(:disabled) {
    border-color: var(--primary-color);
    color: var(--primary-color);
}

.btn-generate {
    width: 100%;
    padding: 16px;
    font-size: 1.125rem;
    background: linear-gradient(135deg, #6366f1, #8b5cf6);
    color: white;
    border: none;
}

.btn-generate:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

/* 表单组 */
.form-group {
    margin-bottom: 20px;
}

.form-group:last-of-type {
    margin-bottom: 0;
}

.form-group label {
    display: block;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--text-primary);
}

.form-group .hint {
    display: block;
    margin-top: 4px;
    font-size: 0.875rem;
    color: var(--text-secondary);
}

/* 文本框 */
textarea {
    width: 100%;
    padding: 12px 16px;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    font-size: 1rem;
    font-family: inherit;
    resize: vertical;
    transition: border-color 0.2s;
}

textarea:focus {
    outline: none;
    border-color: var(--primary-color);
}

/* 图片比例选择 */
.aspect-ratios {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}

.ratio-option {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
    cursor: pointer;
}

.ratio-option input {
    display: none;
}

.ratio-box {
    border: 2px solid var(--border-color);
    border-radius: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.7rem;
    font-weight: 600;
    transition: all 0.2s;
    background: white;
}

.ratio-label {
    font-size: 0.8rem;
    color: var(--text-secondary);
}

/* 比例图标 - 电脑端优化（固定高度 24px，更清晰） */
.ratio-box.ratio-16-9 { width: 43px; height: 24px; }
.ratio-box.ratio-21-9 { width: 56px; height: 24px; }
.ratio-box.ratio-3-1 { width: 72px; height: 24px; }
.ratio-box.ratio-2-1 { width: 48px; height: 24px; }
.ratio-box.ratio-4-3 { width: 32px; height: 24px; }
.ratio-box.ratio-3-2 { width: 36px; height: 24px; }

/* 固定宽度 24px，按比例计算高度 */
.ratio-box.ratio-9-16 { width: 24px; height: 43px; }
.ratio-box.ratio-9-21 { width: 24px; height: 56px; }
.ratio-box.ratio-1-3 { width: 24px; height: 72px; }
.ratio-box.ratio-1-2 { width: 24px; height: 48px; }
.ratio-box.ratio-3-4 { width: 24px; height: 32px; }
.ratio-box.ratio-2-3 { width: 24px; height: 36px; }

/* 1:1 正方形 */
.ratio-box.ratio-1-1 { width: 26px; height: 26px; }

.ratio-option input:checked + .ratio-box {
    border-color: var(--primary-color);
    background: rgba(99, 102, 241, 0.1);
}

.ratio-option:hover .ratio-box {
    border-color: var(--primary-color);
}

/* 上传区域 */
.upload-area {
    border: 2px dashed var(--border-color);
    border-radius: 12px;
    padding: 24px;
    text-align: center;
    cursor: pointer;
    transition: all 0.2s;
    min-height: 150px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.upload-area:hover {
    border-color: var(--primary-color);
    background: rgba(99, 102, 241, 0.05);
}

.upload-area.dragover {
    border-color: var(--primary-color);
    background: rgba(99, 102, 241, 0.1);
}

.upload-placeholder {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    color: var(--text-secondary);
}

.upload-placeholder svg {
    color: var(--secondary-color);
}

.upload-placeholder p {
    font-weight: 600;
    color: var(--text-primary);
}

.upload-placeholder span {
    font-size: 0.875rem;
}

.preview-container {
    position: relative;
    max-width: 100%;
    max-height: 300px;
}

.preview-container img {
    max-width: 100%;
    max-height: 300px;
    border-radius: 8px;
    object-fit: contain;
}

.remove-btn {
    position: absolute;
    top: 8px;
    right: 8px;
    width: 32px;
    height: 32px;
    border: none;
    border-radius: 50%;
    background: rgba(0, 0, 0, 0.6);
    color: white;
    font-size: 1.25rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 0.2s;
}

.remove-btn:hover {
    background: var(--error-color);
}

/* 结果区域 */
.result {
    border: 2px solid var(--primary-color);
}

.result-container {
    margin-bottom: 20px;
    border-radius: 12px;
    overflow: hidden;
    background: var(--bg-color);
}

.result-container img {
    width: 100%;
    display: block;
}

.result-actions {
    display: flex;
    gap: 12px;
    justify-content: center;
}

/* 错误提示 */
.error-message {
    background: #fef2f2;
    border: 1px solid #fecaca;
    color: var(--error-color);
    padding: 16px;
    border-radius: 8px;
    text-align: center;
}

/* 加载动画 */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 1000;
}

.modal-content {
    background: white;
    padding: 40px;
    border-radius: 16px;
    text-align: center;
}

.loader {
    margin-bottom: 16px;
}

.spinner {
    width: 24px;
    height: 24px;
    animation: spin 1s linear infinite;
}

.spinner.large {
    width: 48px;
    height: 48px;
    color: var(--primary-color);
}

@keyframes spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

/* 按钮加载状态 */
.btn-loading {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.btn-text {
    display: inline-flex;
    align-items: center;
    white-space: nowrap;
}

.btn .spinner {
    width: 20px;
    height: 20px;
}

/* 响应式 - 仅保留必要的移动端适配 */
@media (max-width: 600px) {
    .screenshot-tool.floating {
        display: none;
    }

    .container {
        padding: 20px 16px;
    }

    header h1 {
        font-size: 1.75rem;
    }

    section {
        padding: 16px;
    }

    .api-form {
        flex-direction: column;
    }

    .btn {
        width: 100%;
    }

    .aspect-ratios {
        justify-content: space-between;
        gap: 6px;
    }

    .ratio-label {
        font-size: 0.6rem;
    }

    .ratio-box {
        font-size: 0.5rem;
    }

    /* 移动端缩小比例图标 */
    .ratio-box.ratio-16-9 { width: 34px; height: 19px; }
    .ratio-box.ratio-21-9 { width: 45px; height: 19px; }
    .ratio-box.ratio-3-1 { width: 58px; height: 19px; }
    .ratio-box.ratio-2-1 { width: 38px; height: 19px; }
    .ratio-box.ratio-4-3 { width: 25px; height: 19px; }
    .ratio-box.ratio-3-2 { width: 29px; height: 19px; }
    .ratio-box.ratio-9-16 { width: 19px; height: 34px; }
    .ratio-box.ratio-9-21 { width: 19px; height: 45px; }
    .ratio-box.ratio-1-3 { width: 19px; height: 58px; }
    .ratio-box.ratio-1-2 { width: 19px; height: 38px; }
    .ratio-box.ratio-3-4 { width: 19px; height: 25px; }
    .ratio-box.ratio-2-3 { width: 19px; height: 29px; }
    .ratio-box.ratio-1-1 { width: 21px; height: 21px; }
}

/* ============================================
   右侧截图功能框样式
   ============================================ */
.screenshot-tool.floating {
    position: fixed;
    top: 0;
    right: 0;
    bottom: 0;
    width: 380px;
    z-index: 100;
    background: var(--card-bg);
    border-radius: 12px 0 0 12px;
    box-shadow: var(--shadow-lg);
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

/* 工具头部 - 悬浮在浏览器右侧 */
.tool-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 14px 16px;
    background: var(--bg-color);
    border-bottom: 1px solid var(--border-color);
    border-radius: 12px 0 0 0;
    flex-shrink: 0;
}

.header-left {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 600;
    color: var(--text-primary);
}

.new-chat-icon {
    width: 28px;
    height: 28px;
    background: var(--primary-color);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    font-weight: 400;
}

.header-right {
    display: flex;
    gap: 8px;
}

.icon-btn {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    border-radius: 6px;
    transition: background 0.2s;
    font-size: 14px;
}

.icon-btn:hover {
    background: var(--border-color);
}

.model-live-widget {
    position: relative;
    display: inline-flex;
    align-items: center;
}

.model-live-pill {
    height: 32px;
    display: inline-flex;
    align-items: center;
    gap: 7px;
    padding: 0 13px 0 10px;
    border: 1px solid rgba(148, 163, 184, 0.26);
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.72);
    color: #1f2937;
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 0;
    cursor: pointer;
    box-shadow: 0 8px 22px rgba(15, 23, 42, 0.07);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    transition: transform 0.18s, border-color 0.18s, box-shadow 0.18s, background 0.18s;
}

.model-live-pill:hover,
.model-live-widget.open .model-live-pill {
    transform: translateY(-1px);
    border-color: rgba(99, 102, 241, 0.24);
    background: rgba(255, 255, 255, 0.92);
    box-shadow: 0 12px 30px rgba(15, 23, 42, 0.11);
}

.model-live-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: #22c55e;
    box-shadow: 0 0 0 4px rgba(34, 197, 94, 0.14);
}

.model-live-popover {
    position: absolute;
    top: calc(100% + 10px);
    left: var(--model-live-popover-left, 0);
    width: min(286px, calc(100vw - 20px));
    max-height: calc(100vh - 86px);
    overflow: auto;
    display: none;
    padding: 12px;
    border: 1px solid rgba(226, 232, 240, 0.86);
    border-radius: 14px;
    background: rgba(255, 255, 255, 0.94);
    box-shadow: 0 18px 42px rgba(15, 23, 42, 0.14);
    backdrop-filter: blur(18px);
    -webkit-backdrop-filter: blur(18px);
    z-index: 1300;
}

.model-live-widget.open .model-live-popover {
    display: block;
}

.model-live-popover::before {
    content: '';
    position: absolute;
    left: var(--model-live-arrow-left, 19px);
    top: -6px;
    width: 10px;
    height: 10px;
    background: rgba(255, 255, 255, 0.94);
    border-left: 1px solid rgba(226, 232, 240, 0.86);
    border-top: 1px solid rgba(226, 232, 240, 0.86);
    transform: rotate(45deg);
}

.model-live-head {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    gap: 10px;
    margin-bottom: 9px;
}

.model-live-title {
    font-size: 13px;
    font-weight: 760;
    color: #111827;
}

.model-live-sub {
    font-size: 11px;
    color: #94a3b8;
    white-space: nowrap;
}

.model-live-list {
    display: grid;
    gap: 10px;
}

.model-live-item {
    display: grid;
    gap: 6px;
}

.model-live-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 10px;
    min-width: 0;
}

.model-live-name {
    min-width: 0;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    color: #243044;
    font-size: 12px;
    font-weight: 650;
}

.model-live-rate {
    color: #111827;
    font-size: 12px;
    font-weight: 760;
    font-variant-numeric: tabular-nums;
    flex-shrink: 0;
}

.model-live-bar {
    height: 7px;
    overflow: hidden;
    border-radius: 999px;
    background: #eef2f7;
}

.model-live-fill {
    display: block;
    height: 100%;
    border-radius: inherit;
    background: linear-gradient(90deg, #22c55e, #14b8a6);
    box-shadow: 0 0 16px rgba(20, 184, 166, 0.25);
}

.model-live-empty {
    padding: 10px 2px 4px;
    color: #94a3b8;
    font-size: 12px;
    line-height: 1.5;
}

/* 菜单弹出 */
.menu-popup {
    position: absolute;
    top: 50px;
    left: 10px;
    z-index: 1000;
}

.menu-popup-content {
    background: var(--card-bg);
    border-radius: 8px;
    box-shadow: var(--shadow-lg);
    overflow: hidden;
    min-width: 120px;
}

.menu-item {
    display: block;
    width: 100%;
    padding: 10px 16px;
    text-align: left;
    background: none;
    border: none;
    cursor: pointer;
    font-size: 14px;
    color: var(--text-primary);
    transition: background 0.2s;
}

.menu-item:hover {
    background: var(--border-color);
}

.task-manager-modal {
    position: fixed;
    inset: 0;
    z-index: 10030;
    display: none;
    align-items: center;
    justify-content: center;
    padding: 18px;
    background: rgba(15, 23, 42, 0.28);
}

.task-manager-modal.show {
    display: flex;
}

.task-manager-dialog {
    width: min(520px, 100%);
    max-height: min(620px, calc(100vh - 36px));
    display: flex;
    flex-direction: column;
    background: #fff;
    border: 1px solid rgba(148, 163, 184, 0.26);
    border-radius: 8px;
    box-shadow: 0 18px 42px rgba(15, 23, 42, 0.18);
    overflow: hidden;
}

.task-manager-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 16px;
    padding: 16px 18px 14px;
    border-bottom: 1px solid var(--border-color);
    background: #fbfbfc;
}

.task-manager-title {
    font-size: 16px;
    font-weight: 700;
    color: var(--text-primary);
    line-height: 1.25;
}

.task-manager-subtitle {
    margin-top: 4px;
    font-size: 12px;
    color: var(--text-secondary);
}

.task-manager-close {
    width: 28px;
    height: 28px;
    flex: 0 0 28px;
    border: none;
    border-radius: 6px;
    background: transparent;
    color: #64748b;
    font-size: 22px;
    line-height: 1;
    cursor: pointer;
}

.task-manager-close:hover {
    background: #eef2f7;
    color: #1f2937;
}

.task-manager-list {
    overflow-y: auto;
    padding: 8px 0;
}

.task-manager-empty {
    padding: 28px 18px;
    text-align: center;
    font-size: 13px;
    color: var(--text-secondary);
}

.task-manager-item {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 13px 18px;
    border-bottom: 1px solid rgba(226, 232, 240, 0.8);
}

.task-manager-item:last-child {
    border-bottom: none;
}

.task-manager-item-main {
    min-width: 0;
    flex: 1;
}

.task-manager-item-top {
    display: flex;
    align-items: center;
    gap: 8px;
    min-width: 0;
}

.task-manager-model {
    min-width: 0;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    font-size: 14px;
    font-weight: 600;
    color: var(--text-primary);
}

.task-manager-status {
    flex: 0 0 auto;
    padding: 2px 7px;
    border-radius: 999px;
    background: #eef6ff;
    color: #2563eb;
    font-size: 11px;
    line-height: 1.4;
}

.task-manager-prompt {
    margin-top: 5px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    font-size: 13px;
    color: #475569;
}

.task-manager-meta {
    margin-top: 4px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    font-size: 12px;
    color: #94a3b8;
}

.task-manager-end-btn {
    flex: 0 0 auto;
    min-width: 76px;
    height: 32px;
    padding: 0 12px;
    border: 1px solid #fecaca;
    border-radius: 6px;
    background: #fff;
    color: #dc2626;
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
}

.task-manager-end-btn:hover {
    background: #fef2f2;
    border-color: #fca5a5;
}

@media (max-width: 520px) {
    .task-manager-item {
        align-items: flex-start;
        flex-direction: column;
    }

    .task-manager-end-btn {
        width: 100%;
    }
}

/* 通知铃铛 */
.notification-bell {
    position: relative;
}

.notification-badge {
    position: absolute;
    top: -4px;
    right: -4px;
    background: #ff3b30;
    color: white;
    font-size: 10px;
    font-weight: 600;
    min-width: 16px;
    height: 16px;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0 4px;
}

.notification-popup {
    position: absolute;
    top: 40px;
    right: 0;
    width: 373px;
    background: var(--card-bg);
    border-radius: 8px;
    box-shadow: var(--shadow-lg);
    z-index: 1001;
    overflow: hidden;
}

.notification-popup-header {
    padding: 12px 16px;
    font-weight: 600;
    font-size: 14px;
    color: var(--text-primary);
    border-bottom: 1px solid var(--border-color);
    background: var(--bg-color);
}

.notification-popup-content {
    max-height: 600px;
    overflow-y: auto;
}

.notification-item {
    padding: 12px 16px;
    border-bottom: 1px solid var(--border-color);
}

.notification-item:last-child {
    border-bottom: none;
}

.notification-item-date {
    font-size: 12px;
    color: var(--text-secondary);
    margin-bottom: 4px;
    display: flex;
    align-items: center;
    gap: 6px;
}

.notification-item-date .new-tag {
    background: #ff3b30;
    color: white;
    font-size: 10px;
    padding: 2px 6px;
    border-radius: 4px;
    font-weight: 600;
}

.notification-item-title {
    font-weight: 600;
    font-size: 13px;
    color: var(--text-primary);
    margin-bottom: 4px;
}

.notification-item-content {
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.5;
}

.notification-empty {
    padding: 30px 16px;
    text-align: center;
    color: var(--text-secondary);
    font-size: 13px;
}

/* 工具内容区 */
.tool-content {
    padding: 20px 16px;
    flex: 1;
    overflow-y: auto;
    min-height: 0;
}

.tool-title {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 16px;
    text-align: center;
}

/* 功能卡片网格 */
.skill-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
}

.skill-card {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 14px;
    background: var(--bg-color);
    border-radius: 10px;
    cursor: pointer;
    transition: all 0.2s;
    border: 1px solid transparent;
}

.skill-card:hover {
    background: white;
    border-color: var(--primary-color);
    box-shadow: 0 2px 8px rgba(99, 102, 241, 0.15);
}

.skill-icon {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, #6366f1, #8b5cf6);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    flex-shrink: 0;
}

.skill-info {
    display: flex;
    flex-direction: column;
    gap: 2px;
    min-width: 0;
}

.skill-name {
    font-weight: 600;
    font-size: 0.9rem;
    color: var(--text-primary);
}

.skill-desc {
    font-size: 0.75rem;
    color: var(--text-secondary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* 工具底部 */
.tool-footer {
    padding: 0 16px 16px;
    flex-shrink: 0;
}

.upgrade-banner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 16px;
    background: linear-gradient(135deg, #fef3c7, #fde68a);
    border-radius: 8px;
    font-size: 0.85rem;
}

.upgrade-banner span:first-child {
    color: #92400e;
    font-weight: 500;
}

.upgrade-btn {
    background: #f59e0b;
    color: white;
    padding: 6px 12px;
    border-radius: 6px;
    font-weight: 600;
    font-size: 0.8rem;
    cursor: pointer;
    transition: background 0.2s;
}

.upgrade-btn:hover {
    background: #d97706;
}

/* 输入区域 */
.input-area {
    padding: 0 16px 12px;
}

.input-area textarea {
    width: 100%;
    padding: 12px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    font-size: 0.9rem;
    font-family: inherit;
    resize: none;
    transition: border-color 0.2s;
}

.input-area textarea:focus {
    outline: none;
    border-color: var(--border-color);
}

/* 对话输入区域 */
.chat-input-area {
    padding: 0 16px;
    display: flex;
    flex-direction: column;
    gap: 8px;
    flex-shrink: 0;
}

/* 图片上传栏 */
.image-upload-bar {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: nowrap;
    min-height: 60px;
    position: relative;
}

.reference-upload-container {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: nowrap;
    max-width: 100%;
    position: relative;
}

.reference-upload-container .upload-dropdown {
    left: auto;
    right: 0;
}

.reference-upload-container.page-forward .uploaded-images,
.reference-upload-container.page-forward .upload-trigger:not(.hidden) {
    animation: referencePageForward 0.26s cubic-bezier(0.22, 1, 0.36, 1);
}

.reference-upload-container.page-back .uploaded-images,
.reference-upload-container.page-back .upload-trigger:not(.hidden) {
    animation: referencePageBack 0.26s cubic-bezier(0.22, 1, 0.36, 1);
}

@keyframes referencePageForward {
    from { opacity: 0.25; transform: translateX(18px) scale(0.985); }
    to { opacity: 1; transform: translateX(0) scale(1); }
}

@keyframes referencePageBack {
    from { opacity: 0.25; transform: translateX(-18px) scale(0.985); }
    to { opacity: 1; transform: translateX(0) scale(1); }
}

.upload-trigger {
    width: 60px;
    height: 60px;
    border: 2px dashed #d1d5db;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.2s;
    flex-shrink: 0;
}

.upload-trigger.hidden {
    display: none;
}

.upload-trigger:hover {
    border-color: var(--primary-color);
    background: rgba(59, 130, 246, 0.05);
}

.upload-trigger .upload-icon {
    font-size: 24px;
    color: #9ca3af;
    font-weight: 300;
}

.upload-trigger:hover .upload-icon {
    color: var(--primary-color);
}

.upload-dropdown {
    position: absolute;
    bottom: calc(100% + 8px);
    left: 0;
    background: #fff;
    border: 1px solid #e5e7eb;
    border-radius: 8px;
    box-shadow: 0 4px 16px rgba(0,0,0,0.12);
    overflow: hidden;
    z-index: 1000;
    min-width: 120px;
}

.upload-dropdown.upload-dropdown-floating {
    position: fixed;
    top: 0;
    left: 0;
    right: auto;
    bottom: auto;
    z-index: 10050;
}

.upload-dropdown-item {
    display: block;
    width: 100%;
    padding: 10px 16px;
    border: none;
    background: none;
    text-align: left;
    font-size: 0.9rem;
    color: #374151;
    cursor: pointer;
    transition: background 0.15s;
}

.upload-dropdown-item:hover {
    background: #f3f4f6;
}

.upload-dropdown-item + .upload-dropdown-item {
    border-top: 1px solid #f3f4f6;
}

.uploaded-images {
    display: flex;
    gap: 8px;
    flex-wrap: nowrap;
}

.uploaded-images.uploaded-images-paged {
    align-items: center;
    flex-wrap: nowrap;
    overflow: hidden;
    flex: 0 0 auto;
}

.upload-page-btn {
    width: 11px;
    height: 52px;
    border: 0;
    border-radius: 5px;
    background: rgba(248, 250, 252, 0.86);
    color: #6b7280;
    cursor: pointer;
    line-height: 1;
    flex: 0 0 auto;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    font-size: 22px;
    box-shadow: inset 0 0 0 1px rgba(0,0,0,0.06);
    transition: background 0.15s ease, color 0.15s ease, opacity 0.15s ease;
    -webkit-backdrop-filter: saturate(180%) blur(8px);
    backdrop-filter: saturate(180%) blur(8px);
}

.upload-page-btn:hover {
    background: rgba(243, 244, 246, 0.96);
    color: #111827;
}

.upload-page-btn.hidden {
    display: none;
}

.upload-page-btn:disabled {
    opacity: 0;
    cursor: default;
    pointer-events: none;
}

.uploaded-image-item {
    position: relative;
    width: 60px;
    height: 60px;
    border-radius: 8px;
    overflow: hidden;
    flex-shrink: 0;
    cursor: grab;
}

.uploaded-image-item.is-dragging {
    opacity: 0.55;
    cursor: grabbing;
}

.uploaded-image-item.drag-over {
    outline: 2px solid #4a90e2;
    outline-offset: 2px;
}

.reference-upload-container.has-upload-pager .uploaded-image-item {
    width: 52px;
    height: 52px;
}

.uploaded-image-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.uploaded-image-item .remove-btn {
    position: absolute;
    top: 2px;
    right: 2px;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: rgba(0,0,0,0.6);
    color: white;
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 12px;
    line-height: 1;
}

.uploaded-image-item .remove-btn:hover {
    background: rgba(220, 38, 38, 0.8);
}

/* 上传中状态 */
.uploaded-image-item.uploading::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(255, 255, 255, 0.7);
    border-radius: 8px;
    z-index: 1;
}

.uploaded-image-item.uploading .spinner {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 24px;
    height: 24px;
    border: 3px solid #e5e7eb;
    border-top-color: #3b82f6;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
    z-index: 2;
}

@keyframes spin {
    to { transform: translate(-50%, -50%) rotate(360deg); }
}

/* 上传成功闪烁效果 */
.uploaded-image-item.upload-success {
    animation: successFlash 0.3s ease-out;
}

@keyframes successFlash {
    0% { box-shadow: 0 0 0 0 rgba(59, 130, 246, 0.5); }
    50% { box-shadow: 0 0 0 4px rgba(59, 130, 246, 0.3); }
    100% { box-shadow: 0 0 0 0 rgba(59, 130, 246, 0); }
}

.chat-input-area textarea {
    width: 100%;
    padding: 12px;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    font-size: 0.9rem;
    font-family: inherit;
    resize: none;
    transition: border-color 0.2s;
    background: var(--card-bg);
}

.chat-input-area textarea:focus {
    outline: none;
    border-color: var(--border-color);
}

/* 底部工具栏 */
.toolbar {
    display: flex;
    justify-content: space-around;
    padding: 12px 16px;
    background: var(--bg-color);
    border-top: 1px solid var(--border-color);
    flex-shrink: 0;
}

.toolbar-item {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    border-radius: 8px;
    transition: all 0.2s;
    font-size: 16px;
    color: var(--text-secondary);
}

.toolbar-item:hover {
    background: white;
    color: var(--primary-color);
}

/* 控制栏样式 */
.control-bar {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 10px 12px;
    flex-shrink: 0;
    flex-wrap: nowrap;
    min-width: 0;
    max-width: 100%;
    box-sizing: border-box;
    position: relative;
    z-index: 130;
    overflow: visible;
}

.control-item {
    display: flex;
    align-items: center;
    gap: 6px;
    min-width: 0;
    flex: 0 1 auto;
}

.control-item.model-control {
    position: relative;
    z-index: 131;
    flex-shrink: 1;
}

.control-item label {
    font-size: 0.8rem;
    color: var(--text-secondary);
    white-space: nowrap;
    flex: 0 0 auto;
}

.control-item select {
    padding: 6px 10px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    font-size: 0.8rem;
    background: white;
    color: var(--text-primary);
    cursor: pointer;
}

.control-item select:focus {
    outline: none;
    border-color: var(--border-color);
}

/* 模型选择器宽度缩小为原来的1/4 */
.model-control select {
    width: 96px;
    min-width: 96px;
    -webkit-appearance: none;
    -moz-appearance: none;
    appearance: none;
    background-image: none;
}

.model-control select::-ms-expand {
    display: none;
}

.desktop-model-picker {
    position: relative;
    width: 96px;
    min-width: 96px;
    max-width: 96px;
    flex: 0 0 96px;
    z-index: 120;
}

.desktop-model-picker select {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    pointer-events: none;
}

.desktop-model-trigger {
    position: relative;
    z-index: 2;
    pointer-events: auto;
    width: 96px;
    min-width: 0;
    max-width: 96px;
    height: 31px;
    padding: 6px 8px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    background: #fff;
    color: var(--text-primary);
    font-size: 0.8rem;
    text-align: left;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 4px;
    overflow: hidden;
    white-space: nowrap;
}

.desktop-model-options {
    position: absolute;
    left: 0;
    top: auto;
    bottom: calc(100% + 5px);
    z-index: 10080;
    pointer-events: auto;
    width: max-content;
    min-width: 168px;
    max-width: 260px;
    padding: 5px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    background: #fff;
    box-shadow: 0 12px 28px rgba(15, 23, 42, .16);
}

.desktop-model-option {
    width: 100%;
    min-height: 30px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
    padding: 5px 8px;
    border: 0;
    border-radius: 6px;
    background: transparent;
    color: var(--text-primary);
    font-size: 12px;
    text-align: left;
    cursor: pointer;
}

.desktop-model-option:hover,
.desktop-model-option.selected {
    background: #f3f4f6;
}

.desktop-model-option-name {
    min-width: 0;
    flex: 0 1 auto;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.desktop-model-option .model-credit-inline {
    margin-left: auto;
}

.desktop-model-trigger-name {
    min-width: 0;
    flex: 1 1 auto;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.model-credit-inline {
    display: inline-flex;
    align-items: center;
    gap: 1px;
    flex: 0 0 auto;
    color: #eab308;
    font-size: 11px;
    font-weight: 800;
    line-height: 1;
    white-space: nowrap;
}

.model-credit-icon {
    width: 12px;
    height: 12px;
    display: block;
}

.model-credit-value {
    color: #111827;
}

.choice-hover-tooltip {
    position: fixed;
    z-index: 30000;
    display: none;
    pointer-events: none;
    max-width: 280px;
    padding: 8px 10px;
    border-radius: 8px;
    background: rgba(17, 24, 39, 0.96);
    color: #fff;
    box-shadow: 0 14px 32px rgba(15, 23, 42, 0.28);
    font-size: 12px;
    line-height: 1.35;
    white-space: nowrap;
}

.choice-hover-tooltip .tooltip-model-row,
.choice-hover-tooltip .tooltip-ratio-row {
    display: flex;
    align-items: center;
    gap: 7px;
    min-width: 0;
}

.choice-hover-tooltip .tooltip-model-name,
.choice-hover-tooltip .tooltip-ratio-text {
    min-width: 0;
    overflow: hidden;
    text-overflow: ellipsis;
}

.choice-hover-tooltip .model-credit-inline {
    color: #eab308;
}

.choice-hover-tooltip .model-credit-value {
    color: #fff;
}

.choice-hover-tooltip .tooltip-ratio-box {
    flex: 0 0 auto;
    border: 1.5px solid rgba(255,255,255,0.86);
    border-radius: 3px;
    background: rgba(255,255,255,0.14);
    box-shadow: inset 0 0 0 1px rgba(0,0,0,0.1);
}

.model-description-bubble {
    position: fixed;
    z-index: 31000;
    display: none;
    pointer-events: none;
    max-width: 300px;
    padding: 10px 12px;
    border-radius: 8px;
    background: rgba(17, 24, 39, 0.98);
    color: #fff;
    box-shadow: 0 14px 34px rgba(15, 23, 42, 0.32);
    font-size: 12px;
    line-height: 1.45;
    white-space: pre-wrap;
    overflow-wrap: anywhere;
}

.model-description-bubble::before {
    content: '';
    position: absolute;
    top: 50%;
    width: 0;
    height: 0;
    border: 6px solid transparent;
    transform: translateY(-50%);
}

.model-description-bubble[data-side="right"]::before {
    right: 100%;
    border-right-color: rgba(17, 24, 39, 0.98);
}

.model-description-bubble[data-side="left"]::before {
    left: 100%;
    border-left-color: rgba(17, 24, 39, 0.98);
}

.model-recommend-badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    flex: 0 0 auto;
    height: 18px;
    padding: 0 6px;
    border-radius: 999px;
    background: #e11d48;
    color: #fff;
    font-size: 11px;
    font-weight: 800;
    line-height: 1;
    white-space: nowrap;
}

.model-recommend-badge[hidden] {
    display: none !important;
}

/* 比例触发按钮 */
.ratio-control {
    position: relative;
    flex: 0 0 auto;
}

.ratio-trigger {
    width: 88px;
    max-width: 88px;
    min-width: 58px;
    padding: 6px 10px;
    border: none;
    border-radius: 20px;
    background: #e5e7eb;
    color: var(--text-primary);
    font-size: 0.8rem;
    cursor: pointer;
    transition: all 0.2s;
    display: flex;
    align-items: center;
    gap: 4px;
    justify-content: center;
    white-space: nowrap;
    overflow: hidden;
}

.ratio-display {
    min-width: 0;
    max-width: 58px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    display: inline-block;
}

.ratio-trigger::after {
    content: '▼';
    font-size: 0.6rem;
    margin-left: 4px;
}

.ratio-trigger:hover {
    background: #9ca3af;
    color: white;
}

/* 比例下拉气泡 */
.ratio-dropdown {
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%);
    margin-bottom: 8px;
    background: white;
    border-radius: 12px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.15);
    padding: 14px;
    display: none;
    z-index: 100;
    min-width: 320px;
}

.ratio-dropdown.show {
    display: block;
}

.ratio-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 10px;
}

.ratio-dropdown .ratio-option {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6px;
    padding: 10px 8px;
    border: none;
    background: transparent;
    cursor: pointer;
    border-radius: 8px;
    transition: background 0.2s;
}

.ratio-dropdown .ratio-option:hover {
    background: #f3f4f6;
}

.ratio-dropdown .ratio-option.selected {
    background: var(--primary-color);
    color: white;
}

.ratio-dropdown .ratio-option .ratio-box {
    border: 2px solid var(--border-color);
    background: white;
    border-radius: 4px;
}

.ratio-dropdown .ratio-option .ratio-name {
    font-size: 0.7rem;
    color: var(--text-secondary);
}

.ratio-dropdown .ratio-option.selected .ratio-name {
    color: rgba(255,255,255,0.8);
}

.ratio-dropdown .ratio-option.nano-auto-option,
.resolution-selector .resolution-grid .resolution-option.nano-auto-option {
    border: 1px solid #d7e3f5;
    background: #f5f9ff;
    color: #2563eb;
}

.ratio-dropdown .ratio-option.nano-auto-option.selected,
.resolution-selector .resolution-grid .resolution-option.nano-auto-option.selected {
    border-color: var(--primary-color);
    background: var(--primary-color);
    color: #fff;
}

.ratio-dropdown .ratio-option.nano-auto-option .ratio-name,
.resolution-selector .resolution-grid .resolution-option.nano-auto-option span:last-child {
    color: inherit;
}

.nano-auto-popover {
    position: absolute;
    width: 238px;
    margin: 0;
    padding: 10px;
    border: 1px solid #d8eaff;
    border-radius: 8px;
    background: #f8fbff;
    box-shadow: 0 12px 30px rgba(15, 23, 42, 0.14);
    z-index: 120;
}

.nano-auto-title {
    color: #334155;
    font-size: 0.74rem;
    font-weight: 700;
    margin-bottom: 8px;
}

.nano-auto-fields {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 8px;
}

.nano-auto-fields label {
    display: grid;
    grid-template-columns: auto minmax(0, 1fr) auto;
    align-items: center;
    gap: 5px;
    padding: 6px 8px;
    border: 1px solid #dbe5f2;
    border-radius: 7px;
    background: #fff;
    color: #475569;
    font-size: 0.72rem;
}

.nano-auto-fields input {
    width: 100%;
    min-width: 0;
    border: 0;
    outline: 0;
    background: transparent;
    color: #0f172a;
    font: inherit;
}

.nano-auto-fields em {
    color: #94a3b8;
    font-style: normal;
}

.nano-auto-result {
    min-height: 18px;
    margin-top: 7px;
    color: #64748b;
    font-size: 0.7rem;
    line-height: 1.35;
}

.nano-auto-result.error {
    color: #dc2626;
}

/* 发送按钮 */
.send-btn {
    margin-left: auto;
    padding: 8px 16px;
    border: none;
    border-radius: 20px;
    background: #1f2937;
    color: white;
    font-size: 0.85rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.15s;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    white-space: nowrap;
    min-width: 72px;
    max-width: 96px;
    flex: 0 0 auto;
    overflow: hidden;
    box-sizing: border-box;
}

.send-btn .btn-text {
    min-width: 0;
    max-width: 100%;
    overflow: hidden;
    text-overflow: ellipsis;
}

.send-btn:hover {
    background: #374151;
    transform: scale(1.02);
}

.send-btn:active {
    transform: scale(0.95);
}

/* ============================================
   结果展示面板样式（悬浮窗口内）
   ============================================ */
.result-panel {
    margin-top: 16px;
    padding: 16px;
    background: #f8fafc;
    border-radius: 12px;
    border: 1px solid var(--border-color);
}

.result-title {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 12px;
    text-align: center;
}

.result-image-container {
    background: white;
    border-radius: 8px;
    overflow: hidden;
    margin-bottom: 12px;
    min-height: 100px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.result-image-container img {
    width: 100%;
    max-height: 300px;
    object-fit: contain;
}

.result-buttons {
    display: flex;
    gap: 8px;
}

.btn-result {
    flex: 1;
    padding: 8px 12px;
    border: none;
    border-radius: 6px;
    font-size: 0.85rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
}

.btn-result#downloadBtn {
    background: var(--primary-color);
    color: white;
}

.btn-result#downloadBtn:hover {
    background: var(--primary-hover);
}

.btn-result#newGenerateBtn {
    background: #e5e7eb;
    color: var(--text-primary);
}

.btn-result#newGenerateBtn:hover {
    background: #d1d5db;
}

/* ============================================
   左侧画布区域 - AI生成图片的拖拽画布
   ============================================ */
.left-canvas-container {
    position: fixed;
    top: 0;
    left: 0;
    right: var(--right-panel-width);
    bottom: 0;
    z-index: 10;
    background: var(--bg-color);
    overflow: hidden;
    display: flex;
    align-items: flex-start;
    justify-content: flex-start;
}

.left-canvas-area {
    width: 100%;
    height: 100%;
    min-width: 2835px;
    min-height: 2835px;
    flex: 0 0 auto;
    position: relative;
    transform-origin: 0 0;
    z-index: 1; /* 修复刷新后卡牌遮挡按钮：建立独立的层叠上下文 */
}

/* 左侧画布中的可拖拽图片卡片 */
.left-canvas-card {
    position: absolute;
    border-radius: 0;
    box-shadow: var(--shadow-lg);
    background: transparent;
    cursor: move;
    user-select: none;
    transition: box-shadow 0.2s;
    /* 让边框宽度进行反向缩放计算，始终保持1px粗细 */
    border: calc(1px / var(--current-scale, 1)) solid rgba(0,0,0,0.15);
}

.left-canvas-card:hover {
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.2);
    border-color: rgba(0,0,0,0.3);
}

.left-canvas-card.dragging {
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.25);
    z-index: 999;
    cursor: grabbing;
}

.left-canvas-card img {
    display: block;
    pointer-events: none;
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.left-canvas-card .canvas-img-container {
    width: 100%;
    height: 100%;
    overflow: hidden;
}

.left-canvas-card .canvas-card-size-badge {
    position: absolute;
    left: 0;
    top: calc(100% + (6px / var(--current-scale, 1)));
    padding: 3px 7px;
    border-radius: 4px;
    background: rgba(0, 0, 0, 0.72);
    color: #fff;
    font-size: 12px;
    line-height: 1.25;
    font-weight: 500;
    letter-spacing: 0;
    white-space: nowrap;
    pointer-events: none;
    z-index: 3;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.18);
    transform: scale(var(--canvas-card-size-badge-scale, calc(1 / var(--current-scale, 1))));
    transform-origin: top left;
}

/* 控制按钮组 */
.left-canvas-card .canvas-card-controls {
    position: absolute;
    /* 让外边距根据缩放动态调整，使得视觉距离永远是8px */
    top: calc(8px / var(--current-scale, 1));
    right: calc(8px / var(--current-scale, 1));
    display: flex;
    gap: 6px;
    opacity: 0;
    transition: opacity 0.2s;
    /* 采用反向缩放让它看起来永远100%大小，以top right为缩放基准点 */
    transform: scale(calc(1 / var(--current-scale, 1)));
    transform-origin: top right;
}

.left-canvas-card:not(.custom-card) .canvas-card-controls {
    display: none;
}

.left-canvas-card:hover .canvas-card-controls {
    opacity: 1;
}

.left-canvas-card .canvas-card-btn {
    width: 32px;
    height: 32px;
    border: none;
    border-radius: 50%;
    background: rgba(0, 0, 0, 0.6);
    color: white;
    font-size: 16px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 0.2s;
    backdrop-filter: blur(4px);
}

.left-canvas-card .canvas-card-btn:hover {
    transform: scale(1.1);
}

.left-canvas-card .canvas-card-btn.btn-delete:hover {
    background: var(--error-color);
}

.left-canvas-card .canvas-card-btn.btn-download:hover {
    background: var(--primary-color);
}

/* 四角调节模块 */
.left-canvas-card .canvas-resize-handles {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
}

.left-canvas-card .canvas-resize-handle {
    position: absolute;
    width: calc(10px / var(--current-scale, 1));
    height: calc(10px / var(--current-scale, 1));
    background: #000;
    pointer-events: all;
    opacity: 0;
    transition: opacity 0.2s;
}

.left-canvas-card .canvas-resize-handle,
.left-canvas-card.selected .canvas-resize-handle {
    opacity: 0;
}

.left-canvas-card.selected .canvas-resize-handle {
    opacity: 1;
}

.left-canvas-card.multi-selected .canvas-card-controls,
.left-canvas-card.multi-selected .canvas-resize-handle {
    opacity: 0 !important;
    pointer-events: none !important;
}

.left-canvas-card.multi-selected .canvas-card-size-badge {
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
}

.left-canvas-card.canvas-crop-mode {
    cursor: crosshair;
}

.left-canvas-card.canvas-crop-mode .canvas-card-controls,
.left-canvas-card.canvas-crop-mode .canvas-resize-handles,
.left-canvas-card.canvas-crop-mode .canvas-card-size-badge,
.left-canvas-card.canvas-crop-mode .node-out {
    opacity: 0 !important;
    visibility: hidden !important;
    pointer-events: none !important;
}

.canvas-crop-layer {
    position: absolute;
    inset: 0;
    z-index: 60;
    background: rgba(255, 255, 255, 0.48);
    cursor: crosshair;
    overflow: hidden;
}

.canvas-crop-selection {
    position: absolute;
    z-index: 2;
    box-sizing: border-box;
    border: calc(1px / var(--current-scale, 1)) solid #111827;
    background: rgba(255, 255, 255, 0.08);
    box-shadow: 0 0 0 9999px rgba(255, 255, 255, 0.42);
    cursor: move;
}

.canvas-crop-selection::before {
    content: '';
    position: absolute;
    inset: calc(4px / var(--current-scale, 1));
    border: calc(1px / var(--current-scale, 1)) solid rgba(255, 255, 255, 0.72);
    pointer-events: none;
}

.canvas-crop-handle {
    position: absolute;
    width: calc(10px / var(--current-scale, 1));
    height: calc(10px / var(--current-scale, 1));
    background: #111827;
    border: calc(1px / var(--current-scale, 1)) solid #fff;
    box-sizing: border-box;
}

.canvas-crop-handle[data-crop-handle="nw"] {
    left: calc(-5px / var(--current-scale, 1));
    top: calc(-5px / var(--current-scale, 1));
    cursor: nw-resize;
}

.canvas-crop-handle[data-crop-handle="n"] {
    left: 50%;
    top: calc(-5px / var(--current-scale, 1));
    transform: translateX(-50%);
    cursor: n-resize;
}

.canvas-crop-handle[data-crop-handle="ne"] {
    right: calc(-5px / var(--current-scale, 1));
    top: calc(-5px / var(--current-scale, 1));
    cursor: ne-resize;
}

.canvas-crop-handle[data-crop-handle="e"] {
    right: calc(-5px / var(--current-scale, 1));
    top: 50%;
    transform: translateY(-50%);
    cursor: e-resize;
}

.canvas-crop-handle[data-crop-handle="se"] {
    right: calc(-5px / var(--current-scale, 1));
    bottom: calc(-5px / var(--current-scale, 1));
    cursor: se-resize;
}

.canvas-crop-handle[data-crop-handle="s"] {
    left: 50%;
    bottom: calc(-5px / var(--current-scale, 1));
    transform: translateX(-50%);
    cursor: s-resize;
}

.canvas-crop-handle[data-crop-handle="sw"] {
    left: calc(-5px / var(--current-scale, 1));
    bottom: calc(-5px / var(--current-scale, 1));
    cursor: sw-resize;
}

.canvas-crop-handle[data-crop-handle="w"] {
    left: calc(-5px / var(--current-scale, 1));
    top: 50%;
    transform: translateY(-50%);
    cursor: w-resize;
}

.canvas-crop-actions {
    position: absolute;
    left: 50%;
    top: calc(100% + (12px / var(--current-scale, 1)));
    z-index: 70;
    display: none;
    align-items: center;
    gap: 8px;
    padding: 6px;
    border: 1px solid rgba(15, 23, 42, 0.10);
    border-radius: 8px;
    background: rgba(255, 255, 255, 0.96);
    box-shadow: 0 10px 28px rgba(15, 23, 42, 0.16);
    transform: translateX(-50%) scale(calc(1 / var(--current-scale, 1)));
    transform-origin: top center;
    cursor: default;
}

.canvas-crop-actions.show {
    display: flex;
}

.canvas-crop-btn {
    height: 30px;
    min-width: 54px;
    padding: 0 12px;
    border: 1px solid #d1d5db;
    border-radius: 6px;
    background: #fff;
    color: #374151;
    font-size: 12px;
    line-height: 28px;
    cursor: pointer;
}

.canvas-crop-btn:hover {
    background: #f3f4f6;
}

.canvas-crop-confirm {
    border-color: #111827;
    background: #111827;
    color: #fff;
}

.canvas-crop-confirm:hover {
    background: #1f2937;
}

.canvas-crop-btn:disabled {
    opacity: 0.55;
    cursor: not-allowed;
}

.canvas-crop-actions.is-loading .canvas-crop-btn {
    cursor: wait;
}

.left-canvas-card .canvas-resize-handle[data-corner="nw"] {
    top: calc(-5px / var(--current-scale, 1));
    left: calc(-5px / var(--current-scale, 1));
    cursor: nw-resize;
}

.left-canvas-card .canvas-resize-handle[data-corner="ne"] {
    top: calc(-5px / var(--current-scale, 1));
    right: calc(-5px / var(--current-scale, 1));
    cursor: ne-resize;
}

.left-canvas-card .canvas-resize-handle[data-corner="sw"] {
    bottom: calc(-5px / var(--current-scale, 1));
    left: calc(-5px / var(--current-scale, 1));
    cursor: sw-resize;
}

.left-canvas-card .canvas-resize-handle[data-corner="se"] {
    bottom: calc(-5px / var(--current-scale, 1));
    right: calc(-5px / var(--current-scale, 1));
    cursor: se-resize;
}

.canvas-selection-marquee {
    position: absolute;
    z-index: 9998;
    border: calc(1px / var(--current-scale, 1)) solid rgba(37, 99, 235, 0.9);
    background: rgba(37, 99, 235, 0.12);
    pointer-events: none;
    box-sizing: border-box;
}

.canvas-multi-select-box {
    position: absolute;
    z-index: 9997;
    border: calc(1px / var(--current-scale, 1)) solid #111827;
    pointer-events: none;
    box-sizing: border-box;
}

.canvas-multi-select-actions {
    position: absolute;
    top: calc(-40px / var(--current-scale, 1));
    right: calc(-1px / var(--current-scale, 1));
    display: inline-flex;
    align-items: center;
    gap: calc(8px / var(--current-scale, 1));
    pointer-events: all;
}

.canvas-selected-count-btn,
.canvas-batch-download-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: calc(6px / var(--current-scale, 1));
    height: calc(30px / var(--current-scale, 1));
    padding: 0 calc(12px / var(--current-scale, 1));
    border: 0;
    border-radius: calc(8px / var(--current-scale, 1));
    background: #111827;
    color: #fff;
    font-size: calc(13px / var(--current-scale, 1));
    font-weight: 600;
    line-height: 1;
    white-space: nowrap;
    box-shadow: 0 calc(8px / var(--current-scale, 1)) calc(18px / var(--current-scale, 1)) rgba(0, 0, 0, 0.18);
}

.canvas-selected-count-btn {
    background: rgba(255, 255, 255, 0.96);
    color: #111827;
    cursor: default;
}

.canvas-batch-download-btn {
    background: #111827;
    color: #fff;
    cursor: pointer;
    pointer-events: all;
}

.canvas-batch-download-btn svg {
    width: calc(15px / var(--current-scale, 1));
    height: calc(15px / var(--current-scale, 1));
    fill: none;
    stroke: currentColor;
    stroke-width: 1.6;
    stroke-linecap: round;
    stroke-linejoin: round;
    flex: 0 0 auto;
}

.canvas-batch-download-btn:hover {
    background: #000;
}

.canvas-batch-download-btn:disabled {
    cursor: default;
    opacity: 0.72;
}

.canvas-multi-resize-handle {
    position: absolute;
    width: calc(12px / var(--current-scale, 1));
    height: calc(12px / var(--current-scale, 1));
    background: #111827;
    border: calc(1px / var(--current-scale, 1)) solid #fff;
    box-sizing: border-box;
    pointer-events: all;
}

.canvas-multi-resize-handle[data-corner="nw"] {
    top: calc(-6px / var(--current-scale, 1));
    left: calc(-6px / var(--current-scale, 1));
    cursor: nw-resize;
}

.canvas-multi-resize-handle[data-corner="ne"] {
    top: calc(-6px / var(--current-scale, 1));
    right: calc(-6px / var(--current-scale, 1));
    cursor: ne-resize;
}

.canvas-multi-resize-handle[data-corner="sw"] {
    bottom: calc(-6px / var(--current-scale, 1));
    left: calc(-6px / var(--current-scale, 1));
    cursor: sw-resize;
}

.canvas-multi-resize-handle[data-corner="se"] {
    bottom: calc(-6px / var(--current-scale, 1));
    right: calc(-6px / var(--current-scale, 1));
    cursor: se-resize;
}

/* ============================================
   卡牌工具栏样式
   ============================================ */

.card-toolbar {
    position: fixed;
    z-index: 99;
    pointer-events: auto;
}

.card-toolbar-wrap {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 7px 12px;
    background-color: #e9e9eb;
    border-radius: 999px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.card-capsule-btn {
    width: 34px;
    height: 34px;
    border-radius: 999px;
    background: #000;
    border: none;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    position: relative;
    transition: background 0.2s ease;
}

.card-capsule-btn:hover {
    background: #333;
}

.card-capsule-btn:disabled,
.card-capsule-btn.disabled {
    opacity: 0.45;
    cursor: not-allowed;
    background: #555;
}

.card-capsule-btn:disabled:hover,
.card-capsule-btn.disabled:hover {
    background: #555;
}

.card-capsule-btn:disabled svg,
.card-capsule-btn.disabled svg {
    stroke: rgba(255, 255, 255, 0.65);
}

.card-capsule-btn svg {
    width: 16px;
    height: 16px;
    stroke: #fff;
    fill: none;
    stroke-width: 2;
    stroke-linecap: round;
    stroke-linejoin: round;
}

.card-tips-bubble {
    position: absolute;
    bottom: -34px;
    left: 50%;
    transform: translateX(-50%);
    background: #1a1a1a;
    color: #fff;
    font-size: 12px;
    padding: 3px 9px;
    border-radius: 5px;
    white-space: nowrap;
    opacity: 0;
    visibility: hidden;
    transition: 0.2s ease;
    z-index: 99;
}

.card-capsule-btn:hover .card-tips-bubble {
    opacity: 1;
    visibility: visible;
}

/* 画布工具栏 - 悬浮气泡提示（覆盖两个工具栏所有按钮） */
.canvas-tips-bubble {
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    background: #1a1a1a;
    color: #fff;
    font-size: 12px;
    padding: 3px 9px;
    border-radius: 5px;
    white-space: nowrap;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.2s ease, visibility 0.2s ease;
    z-index: 200;
    pointer-events: none;
    top: auto;
    bottom: calc(100% + 8px);
}

/* 左下角工具栏：气泡从按钮上方弹出 */
.canvas-tool-btn:hover .canvas-tips-bubble {
    opacity: 1;
    visibility: visible;
}

/* 右上角工具栏专属 class：默认定位在按钮下方 */
.canvas-tips-bubble.zoom-btn-bubble {
    bottom: -34px;
}

/* 右上角工具栏 hover 时保持下方定位 */
.zoom-btn:hover .canvas-tips-bubble.zoom-btn-bubble {
    opacity: 1;
    visibility: visible;
}

/* 卡牌工具栏 - 其它信息气泡框 */
.card-image-info-popup {
    position: fixed;
    z-index: 10001;
    background: #fffef8;
    border: 1px solid #e8e0cc;
    border-radius: 10px;
    padding: 10px 14px;
    min-width: 180px;
    max-width: 320px;
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.15);
    font-size: 0.8rem;
    line-height: 1.6;
    opacity: 0;
    transform: translateY(-4px);
    transition: opacity 0.15s ease, transform 0.15s ease;
    pointer-events: none;
}

.card-image-info-popup.show {
    opacity: 1;
    transform: translateY(0);
    pointer-events: auto;
}

.image-info-section {
    margin-bottom: 6px;
}

.image-info-section-title {
    font-weight: 600;
    color: #555;
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.image-info-item {
    display: flex;
    gap: 8px;
    padding: 3px 0;
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
}

.image-info-item:last-child {
    border-bottom: none;
}

.image-info-label {
    color: #999;
    flex-shrink: 0;
    min-width: 50px;
}

.image-info-value {
    color: #333;
    word-break: break-all;
}

.image-info-prompt {
    flex-direction: column;
    gap: 2px;
}

.image-info-prompt .image-info-value {
    color: #555;
    font-size: 0.78rem;
    background: #f5f0e6;
    padding: 4px 8px;
    border-radius: 4px;
    white-space: pre-wrap;
    word-break: break-word;
}

.image-info-empty {
    color: #bbb;
    text-align: center;
    padding: 6px 0;
    font-size: 0.78rem;
}

/* 卡牌工具栏 - 占位按钮气泡提示 */
.card-placeholder-popup {
    position: fixed;
    background: #fffef8;
    border: 1px solid #e8e0cc;
    border-radius: 8px;
    padding: 6px 12px;
    font-size: 0.78rem;
    color: #888;
    white-space: nowrap;
    opacity: 0;
    transform: translateX(-50%) translateY(-4px);
    transition: opacity 0.15s ease, transform 0.15s ease;
    pointer-events: none;
    z-index: 10000;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.card-placeholder-popup.show {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
    pointer-events: auto;
}

/* 左侧画布缩放控制按钮 */
.left-canvas-zoom-controls {
    position: fixed;
    top: var(--canvas-control-gap);
    right: calc(var(--right-panel-width) + var(--canvas-control-gap));
    display: flex;
    align-items: center;
    gap: 6px;
    z-index: 100;
    background: white;
    padding: 6px 10px;
    border-radius: 24px;
    box-shadow: var(--shadow);
}

.zoom-btn {
    width: 36px;
    height: 36px;
    border: none;
    border-radius: 50%;
    background: transparent;
    color: var(--text-primary);
    font-size: 20px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.15s;
    flex-shrink: 0;
    position: relative;
}

.zoom-btn:hover {
    background: var(--primary-color);
    color: white;
    transform: scale(1.08);
}

.zoom-btn:active {
    transform: scale(0.95);
}

.zoom-percent {
    font-size: 13px;
    font-weight: 600;
    color: var(--text-primary);
    min-width: 44px;
    text-align: center;
    user-select: none;
    letter-spacing: 0.5px;
}

.zoom-reset {
    font-size: 18px;
    margin-left: 2px;
}

/* 画布工具控制按钮（指针/手掌） */
.left-canvas-tool-controls {
    position: fixed;
    bottom: var(--canvas-control-gap);
    left: calc((100vw - var(--right-panel-width)) / 2);
    transform: translateX(-50%);
    display: flex;
    align-items: center;
    gap: 6px;
    z-index: 100;
    background: white;
    padding: 6px 10px;
    border-radius: 24px;
    box-shadow: var(--shadow);
}

.canvas-tool-btn {
    width: 36px;
    height: 36px;
    border: none;
    border-radius: 8px;
    background: transparent;
    color: var(--text-primary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.15s;
    flex-shrink: 0;
    padding: 0;
    position: relative;
}

.canvas-tool-btn svg {
    width: 16px;
    height: 16px;
}

.canvas-tool-btn:hover {
    background: #d0d0d0;
    color: #333;
    transform: scale(1.08);
}

.create-task-control.menu-open .canvas-tool-btn,
.canvas-upload-control.menu-open .canvas-tool-btn {
    background: #d0d0d0;
    color: #333;
}

.create-task-control.menu-open .canvas-tips-bubble,
.canvas-upload-control.menu-open .canvas-tips-bubble {
    display: none;
}

.canvas-tool-btn:active {
    transform: scale(0.95);
}

.canvas-tool-btn[data-tool].active {
    background: transparent;
    color: #333;
}

.canvas-tool-btn[data-tool].active::after {
    content: '';
    position: absolute;
    inset: 5px;
    background: #e8e8e8;
    border-radius: 4px;
    z-index: -1;
}

.canvas-tool-btn.is-active::after {
    content: '';
    position: absolute;
    inset: 5px;
    background: #e7f5ef;
    border: 1px solid rgba(16, 185, 129, 0.35);
    border-radius: 4px;
    z-index: -1;
}

body.reference-image-task-picking #leftCanvasContainer,
body.reference-image-task-picking #leftCanvasArea,
body.reference-image-task-picking .left-canvas-card,
body.reference-image-task-picking .left-canvas-card * {
    cursor: var(--reference-image-pick-cursor) !important;
}

body.reference-image-task-picking .left-canvas-card:hover {
    box-shadow: 0 0 0 calc(2px / var(--current-scale, 1)) rgba(16, 185, 129, 0.9), 0 12px 40px rgba(16, 185, 129, 0.22);
    border-color: rgba(16, 185, 129, 0.85);
}

.reference-image-task-hint {
    position: absolute;
    top: 24px;
    left: 50%;
    transform: translateX(-50%) translateY(-8px);
    z-index: 130;
    background: rgba(0, 0, 0, 0.75);
    color: #fff;
    padding: 10px 24px;
    border-radius: 24px;
    font-size: 13px;
    font-weight: 500;
    opacity: 0;
    transition: opacity 0.25s ease, transform 0.25s ease;
    pointer-events: none;
    white-space: nowrap;
    backdrop-filter: blur(4px);
    letter-spacing: 0.5px;
}

.reference-image-task-hint.show {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
}

.canvas-tool-btn:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

.canvas-tool-btn:disabled:hover {
    background: transparent;
    color: var(--text-primary);
    transform: none;
}

.create-task-control {
    position: relative;
    display: flex;
    gap: 2px;
}

.create-task-menu {
    position: absolute;
    bottom: calc(100% + 10px);
    left: 50%;
    transform: translateX(-50%);
    display: none;
    min-width: 108px;
    padding: 6px;
    background: #fff;
    border: 1px solid rgba(0, 0, 0, 0.08);
    border-radius: 8px;
    box-shadow: 0 8px 28px rgba(15, 23, 42, 0.16);
    z-index: 120;
}

.create-task-menu.show {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.create-task-menu-btn {
    height: 30px;
    padding: 0 10px;
    border: none;
    border-radius: 6px;
    background: transparent;
    color: #1f2937;
    font-size: 12px;
    line-height: 30px;
    text-align: left;
    white-space: nowrap;
    cursor: pointer;
}

.create-task-menu-btn:hover {
    background: #f3f4f6;
}

.canvas-url-dialog {
    position: fixed;
    inset: 0;
    z-index: 10020;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(17, 24, 39, 0.18);
}

.canvas-url-panel {
    width: min(420px, calc(100vw - 32px));
    padding: 14px;
    border-radius: 8px;
    background: #fff;
    border: 1px solid rgba(0, 0, 0, 0.08);
    box-shadow: 0 18px 42px rgba(15, 23, 42, 0.22);
}

.canvas-url-title {
    color: #111827;
    font-size: 14px;
    font-weight: 600;
    line-height: 20px;
    margin-bottom: 10px;
}

.canvas-url-textarea {
    width: 100%;
    min-height: 138px;
    resize: vertical;
    border: 1px solid #d1d5db;
    border-radius: 6px;
    padding: 9px 10px;
    color: #111827;
    font-size: 12px;
    line-height: 1.5;
    outline: none;
    box-sizing: border-box;
}

.canvas-url-textarea:focus {
    border-color: #9ca3af;
    box-shadow: 0 0 0 3px rgba(156, 163, 175, 0.18);
}

.canvas-url-actions {
    display: flex;
    justify-content: flex-end;
    gap: 8px;
    margin-top: 12px;
}

.canvas-url-btn {
    height: 30px;
    padding: 0 14px;
    border: 1px solid #d1d5db;
    border-radius: 6px;
    background: #fff;
    color: #374151;
    font-size: 12px;
    cursor: pointer;
}

.canvas-url-btn:hover {
    background: #f3f4f6;
}

.canvas-url-confirm {
    border-color: #111827;
    background: #111827;
    color: #fff;
}

.canvas-url-confirm:hover {
    background: #1f2937;
}

.canvas-url-btn:disabled {
    opacity: 0.55;
    cursor: wait;
}

.toolbar-divider {
    width: 1px;
    height: 24px;
    background: rgba(0, 0, 0, 0.15);
    margin: 0 2px;
}

/* ============================================
   自由拖拽画布区域
   ============================================ */
.free-canvas-area {
    /* 移至左侧画布，此处仅作占位或隐藏 */
    display: none;
}

.canvas-placeholder {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    pointer-events: none;
}

.canvas-icon {
    font-size: 48px;
    font-weight: 300;
    color: #d1d5db;
    margin-bottom: 12px;
}

.canvas-placeholder p {
    margin: 4px 0;
    font-size: 0.9rem;
}

.canvas-hint {
    font-size: 0.75rem !important;
    color: #9ca3af !important;
}

/* 可拖拽的图片卡片 */
.draggable-image-card {
    position: absolute;
    top: 20px;
    left: 20px;
    width: 280px;
    height: 210px;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: var(--shadow-lg);
    background: white;
    cursor: move;
    transition: box-shadow 0.2s;
}

.draggable-image-card:hover {
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
}

.draggable-image-card img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    pointer-events: none;
}

/* 卡片上的按钮 */
.draggable-image-card .card-remove,
.draggable-image-card .card-download {
    position: absolute;
    width: 28px;
    height: 28px;
    border: none;
    border-radius: 50%;
    background: rgba(0, 0, 0, 0.6);
    color: white;
    font-size: 16px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity 0.2s, background 0.2s;
}

.draggable-image-card:hover .card-remove,
.draggable-image-card:hover .card-download {
    opacity: 1;
}

.draggable-image-card .card-remove {
    top: 8px;
    right: 8px;
}

.draggable-image-card .card-download {
    top: 8px;
    right: 44px;
}

.draggable-image-card .card-remove:hover {
    background: var(--error-color);
}

.draggable-image-card .card-download:hover {
    background: var(--primary-color);
}

/* 缩放控制点 */
.resize-handle {
    position: absolute;
    bottom: 0;
    right: 0;
    width: 20px;
    height: 20px;
    cursor: se-resize;
    background: linear-gradient(135deg, transparent 50%, rgba(0,0,0,0.3) 50%);
    border-bottom-right-radius: 8px;
}

/* ============================================
   聊天消息区域
   ============================================ */
.tool-content {
    padding: 0;
    flex: 1;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.chat-messages {
    flex: 1;
    overflow-y: auto;
    padding: 16px 12px;
    display: flex;
    flex-direction: column;
    gap: 16px;
    scroll-behavior: smooth;
}

/* 欢迎界面 */
.chat-welcome {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    min-height: 0;
    overflow: hidden;
    padding: 18px 14px;
    color: var(--text-secondary);
    flex: 1;
    user-select: none;
}

.chat-welcome .welcome-icon {
    font-size: 48px;
    margin-bottom: 12px;
    opacity: 0.7;
}

.chat-welcome p {
    margin: 4px 0;
    font-size: 0.95rem;
    color: var(--text-secondary);
}

.chat-welcome .welcome-hint {
    font-size: 0.8rem !important;
    color: #9ca3af !important;
    margin-top: 6px !important;
}

/* 单条消息 */
.chat-welcome .marker-empty {
    width: min(100%, 320px);
    max-height: 100%;
    display: block;
    text-align: center;
    overflow: hidden;
    contain: content;
}

.chat-welcome .marker-empty-logo {
    width: 174px;
    height: 52px;
    object-fit: contain;
    display: block;
    margin: 0 auto 6px;
}

.chat-welcome .marker-editor-line {
    max-width: 100%;
    display: inline-block;
    vertical-align: middle;
    box-sizing: border-box;
    margin: 3px;
}

.chat-welcome .marker-editor-image {
    max-width: 100%;
    height: auto;
    object-fit: contain;
    display: inline-block;
    vertical-align: middle;
    margin: 3px;
}

.chat-welcome .marker-editor-image:not([style]) {
    max-width: 240px;
    max-height: 160px;
}

.chat-welcome .marker-editor-svg {
    max-width: 100%;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    line-height: 0;
    vertical-align: middle;
    margin: 3px;
}

.chat-welcome .marker-editor-svg svg {
    max-width: 100%;
    height: auto;
    display: block;
}

.chat-welcome .marker-editor-svg[style] svg {
    width: 100%;
    height: 100%;
}

.chat-welcome .marker-empty-kicker {
    display: inline-block;
    margin-bottom: 6px;
    padding: 4px 10px;
    border-radius: 999px;
    background: rgba(17, 24, 39, 0.08);
    color: #111827;
    font-size: 0.72rem;
    font-weight: 700;
    line-height: 1;
}

.chat-welcome .marker-empty-title {
    margin-bottom: 6px;
    color: #111827;
    font-size: 1rem;
    font-weight: 800;
    line-height: 1.25;
}

.chat-welcome .marker-empty p {
    max-width: 300px;
    margin: 0 auto 6px;
    color: #6b7280;
    font-size: 0.84rem;
    line-height: 1.55;
}

.chat-welcome .marker-empty-steps {
    width: 100%;
    display: grid;
    gap: 5px;
    margin: 0 auto 6px;
}

.chat-welcome .marker-empty-steps span {
    display: block;
    padding: 6px 9px;
    border: 1px solid rgba(17, 24, 39, 0.08);
    border-radius: 8px;
    background: rgba(255, 255, 255, 0.72);
    color: #374151;
    font-size: 0.78rem;
    line-height: 1.3;
}

.chat-welcome .marker-empty-note {
    margin-bottom: 6px;
    color: #9ca3af;
    font-size: 0.74rem;
    line-height: 1.35;
}

.chat-welcome .marker-empty-canvas-tip {
    margin-top: 3px;
    color: #6b7280;
    font-size: 0.78rem;
    font-weight: 700;
    line-height: 1.35;
}

.chat-message {
    display: flex;
    flex-direction: column;
    gap: 8px;
    animation: msgIn 0.25s ease-out;
}

@keyframes msgIn {
    from { opacity: 0; transform: translateY(8px); }
    to   { opacity: 1; transform: translateY(0); }
}

/* 用户消息 - 靠右 */
.chat-message.user {
    align-items: flex-end;
}

.chat-message.user .msg-bubble {
    background: var(--primary-color);
    color: white;
    border-radius: 16px 16px 4px 16px;
    max-width: 85%;
}

/* AI消息 - 靠左 */
.chat-message.assistant {
    align-items: flex-start;
}

.chat-message.assistant .msg-bubble {
    background: #f1f5f9;
    color: var(--text-primary);
    border-radius: 16px 16px 16px 4px;
    max-width: 85%;
}

/* 气泡主体 */
.msg-bubble {
    padding: 10px 14px;
    font-size: 0.9rem;
    line-height: 1.5;
    word-break: break-word;
    white-space: pre-wrap;
}

/* 气泡内图片 */
.msg-bubble .msg-images {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-top: 8px;
}

.msg-bubble .msg-reference-strip {
    display: flex;
    align-items: center;
    gap: 6px;
    margin-top: 8px;
}

.msg-bubble .msg-reference-strip .msg-images {
    margin-top: 0;
    flex-wrap: nowrap;
    overflow: hidden;
    flex: 0 0 auto;
}

.msg-bubble .msg-reference-strip .msg-img-thumb {
    flex: 0 0 auto;
}

.msg-ref-page-btn {
    width: 10px;
    height: 80px;
    border: 0;
    border-radius: 5px;
    background: rgba(248, 250, 252, 0.86);
    color: #6b7280;
    cursor: pointer;
    line-height: 1;
    flex: 0 0 auto;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    font-size: 22px;
    box-shadow: inset 0 0 0 1px rgba(0,0,0,0.06);
    transition: background 0.15s ease, color 0.15s ease, opacity 0.15s ease;
    -webkit-backdrop-filter: saturate(180%) blur(8px);
    backdrop-filter: saturate(180%) blur(8px);
}

.msg-ref-page-btn:hover {
    background: rgba(243, 244, 246, 0.96);
    color: #111827;
}

.msg-ref-page-btn:disabled {
    opacity: 0;
    cursor: default;
    pointer-events: none;
}

.msg-bubble .msg-img-thumb {
    max-width: 120px;
    max-height: 80px;
    border-radius: 8px;
    object-fit: cover;
    cursor: pointer;
    transition: opacity 0.2s;
    border: 1px solid rgba(0,0,0,0.1);
}

.msg-bubble .msg-img-thumb:hover {
    opacity: 0.85;
}

/* 消息时间戳 */
.msg-time {
    font-size: 0.7rem;
    color: #9ca3af;
    margin-top: 2px;
    padding: 0 4px;
}

/* 加载中的消息 */
.chat-message.loading .msg-bubble {
    display: flex;
    align-items: center;
    gap: 8px;
}

.msg-dots {
    display: flex;
    gap: 4px;
}

.msg-dots span {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--text-secondary);
    animation: dotBounce 1.2s infinite;
}

.msg-dots span:nth-child(2) { animation-delay: 0.2s; }
.msg-dots span:nth-child(3) { animation-delay: 0.4s; }

@keyframes dotBounce {
    0%, 80%, 100% { transform: scale(0.6); opacity: 0.4; }
    40%           { transform: scale(1);   opacity: 1; }
}

/* 生成失败气泡 */
.error-bubble {
    background: #fff1f0 !important;
    border: 1px solid #ffccc7 !important;
}

.msg-error-wrap {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
}

.msg-error-text {
    color: #ff4d4f;
    font-size: 0.9rem;
}

.msg-retry-link {
    color: var(--primary-color);
    font-size: 0.9rem;
    text-decoration: none;
    cursor: pointer;
    font-weight: 500;
}

.msg-retry-link:hover {
    text-decoration: underline;
}

/* AI消息生成完成后的图片 */
.msg-generated-img {
    width: 100%;
    max-width: 260px;
    border-radius: 10px;
    margin-top: 8px;
    box-shadow: var(--shadow);
    cursor: pointer;
    transition: transform 0.2s, box-shadow 0.2s;
}

.msg-generated-img:hover {
    transform: scale(1.02);
    box-shadow: var(--shadow-lg);
}

/* 图片预览弹窗 */
.img-preview-modal {
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(0,0,0,0.85);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 2000;
    cursor: zoom-out;
}

.img-preview-modal.show {
    display: flex;
}

.img-preview-modal img {
    max-width: 90vw;
    max-height: 90vh;
    border-radius: 12px;
    object-fit: contain;
}

.draggable-image-card:hover .resize-handle {
    background: linear-gradient(135deg, transparent 50%, rgba(99, 102, 241, 0.5) 50%);
}
/* nano banana 2 分辨率选择器 */
.resolution-selector {
    padding: 8px 12px;
    border-bottom: 1px solid #e5e7eb;
}

.resolution-label {
    font-size: 0.7rem;
    color: var(--text-secondary);
    margin-bottom: 6px;
    text-align: center;
}

.resolution-options {
    display: flex;
    gap: 6px;
    justify-content: center;
}

.resolution-option {
    padding: 4px 14px;
    border: 1px solid var(--border-color);
    border-radius: 14px;
    background: white;
    color: var(--text-secondary);
    font-size: 0.75rem;
    cursor: pointer;
    transition: all 0.2s;
    white-space: normal;
    text-align: center;
    min-width: 0;
}

.resolution-selector .resolution-options {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    justify-content: center;
}

.resolution-option:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
}

.resolution-option.selected {
    background: var(--primary-color);
    border-color: var(--primary-color);
    color: white;
}

/* 4K分辨率两列网格布局 */
.resolution-selector .resolution-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 6px;
    margin-bottom: 10px;
}

.resolution-selector .resolution-grid .resolution-option {
    padding: 6px 10px;
    font-size: 0.75rem;
    min-width: 0;
    display: flex;
    align-items: center;
    gap: 6px;
}

/* 分辨率选项的比例图标 */
.resolution-selector .res-box {
    display: inline-block;
    border: 1px solid var(--border-color);
    border-radius: 2px;
    background: #f0f0f0;
    flex-shrink: 0;
}

/* 背景选项样式 */
.resolution-selector .background-grid {
    display: flex;
    gap: 6px;
    justify-content: center;
    margin-bottom: 10px;
}

.resolution-selector .background-option {
    padding: 4px 12px;
    border: 1px solid var(--border-color);
    border-radius: 14px;
    background: white;
    color: var(--text-primary);
    font-size: 0.75rem;
    cursor: pointer;
    transition: all 0.2s;
    min-width: 0;
}

.resolution-selector .background-option:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
}

.resolution-selector .background-option.selected {
    background: var(--primary-color);
    border-color: var(--primary-color);
    color: white;
}

/* GPT-Image-2 4K（备用2）分辨率选择器 - 3列布局 */
.resolution-selector .resolution-toapis-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 4px;
    margin-bottom: 8px;
}

.resolution-selector .resolution-toapis-grid .resolution-option {
    padding: 4px 6px;
    font-size: 0.7rem;
    min-width: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 4px;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    background: white;
    color: var(--text-primary);
    cursor: pointer;
    transition: all 0.2s;
}

.resolution-selector .resolution-toapis-grid .resolution-option:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
}

.resolution-selector .resolution-toapis-grid .resolution-option.selected {
    background: var(--primary-color);
    border-color: var(--primary-color);
    color: white;
}

.resolution-selector .resolution-toapis-grid .resolution-option .res-box {
    display: inline-block;
    border: 1px solid currentColor;
    border-radius: 1px;
    background: transparent;
    flex-shrink: 0;
}

/* ToAPIs 模型专属分辨率选择器高度适配 */
.resolution-selector .resolution-toapis-grid .resolution-option {
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.resolution-selector .resolution-toapis-grid .resolution-option span:last-child {
    overflow: hidden;
    text-overflow: ellipsis;
}

/* ============================================
   聊天图片右键菜单
   ============================================ */
#chatImageContextMenu {
    position: fixed;
    z-index: 3000;
    background: var(--card-bg);
    border-radius: 10px;
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.2), 0 0 0 1px rgba(0, 0, 0, 0.06);
    padding: 6px 0;
    min-width: 160px;
    opacity: 0;
    transform: scale(0.95);
    transition: opacity 0.15s ease, transform 0.15s ease;
    pointer-events: none;
}

#chatImageContextMenu.ctx-visible {
    opacity: 1;
    transform: scale(1);
    pointer-events: auto;
}

.ctx-menu-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 9px 16px;
    cursor: pointer;
    font-size: 0.875rem;
    color: var(--text-primary);
    transition: background 0.15s;
    user-select: none;
}

.ctx-menu-item:hover {
    background: rgba(99, 102, 241, 0.08);
}

.ctx-menu-item.ctx-danger:hover {
    background: rgba(239, 68, 68, 0.08);
    color: var(--error-color);
}

.ctx-icon {
    font-size: 14px;
    width: 18px;
    height: 18px;
    text-align: center;
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
}

.ctx-icon svg {
    width: 16px;
    height: 16px;
}

.ctx-menu-item:hover .ctx-icon svg {
    stroke: var(--primary-color);
}

.ctx-icon-fill {
    color: #666;
}

.ctx-menu-item:hover .ctx-icon-fill {
    color: var(--primary-color);
}

.ctx-menu-item.ctx-danger:hover .ctx-icon svg {
    stroke: var(--error-color);
}

.split-material-modal {
    position: fixed;
    inset: 0;
    z-index: 10040;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 18px;
    background: rgba(15, 23, 42, 0.32);
}

.split-material-dialog {
    width: min(480px, 100%);
    padding: 16px;
    border: 1px solid rgba(148, 163, 184, 0.28);
    border-radius: 8px;
    background: #fff;
    box-shadow: 0 18px 42px rgba(15, 23, 42, 0.2);
}

.split-material-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    margin-bottom: 12px;
}

.split-material-title {
    font-size: 16px;
    font-weight: 700;
    color: var(--text-primary);
}

.split-material-close {
    width: 28px;
    height: 28px;
    border: none;
    border-radius: 6px;
    background: transparent;
    color: #64748b;
    font-size: 22px;
    line-height: 1;
    cursor: pointer;
}

.split-material-close:hover {
    background: #eef2f7;
    color: #1f2937;
}

.split-material-input {
    width: 100%;
    min-height: 118px;
    resize: vertical;
    padding: 10px 12px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    outline: none;
    font-size: 14px;
    line-height: 1.5;
    color: var(--text-primary);
}

.split-material-input:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.12);
}

.split-material-help {
    margin-top: 8px;
    font-size: 12px;
    line-height: 1.55;
    color: var(--text-secondary);
}

.split-material-actions {
    display: flex;
    justify-content: flex-end;
    gap: 10px;
    margin-top: 16px;
}

.split-material-btn {
    min-height: 34px;
    padding: 0 14px;
    border-radius: 6px;
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
}

.split-material-cancel {
    border: 1px solid var(--border-color);
    background: #fff;
    color: var(--text-secondary);
}

.split-material-cancel:hover {
    background: #f8fafc;
    color: var(--text-primary);
}

.split-material-confirm {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    border: 1px solid var(--primary-color);
    background: var(--primary-color);
    color: #fff;
}

.split-material-confirm:hover {
    background: var(--primary-hover);
    border-color: var(--primary-hover);
}

.split-material-confirm.credit-disabled {
    border-color: #cbd5e1;
    background: #e2e8f0;
    color: #94a3b8;
    cursor: not-allowed;
}

.split-material-confirm .credit-cost-badge {
    color: inherit;
}

/* ============================================
   画布粘贴上传动画
   ============================================ */

/* 卡片上传中：白色呼吸闪烁 + 上传提示 */
.left-canvas-card.canvas-uploading {
    pointer-events: none;
}

.left-canvas-card.canvas-uploading::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(255, 255, 255, 0.45);
    border-radius: inherit;
    z-index: 10;
    animation: canvasBreathing 0.8s ease-in-out infinite;
}

.left-canvas-card.canvas-uploading .canvas-upload-hint {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    z-index: 11;
    background: rgba(0, 0, 0, 0.65);
    color: #fff;
    font-size: 13px;
    font-weight: 600;
    padding: 6px 16px;
    border-radius: 20px;
    white-space: nowrap;
    pointer-events: none;
    backdrop-filter: blur(4px);
    letter-spacing: 0.5px;
}

/* 呼吸闪烁：从半透明 → 不透明 → 半透明 */
@keyframes canvasBreathing {
    0%   { opacity: 0.3; }
    50%  { opacity: 0.8; }
    100% { opacity: 0.3; }
}

/* 上传成功：从闪烁 → 正常渲染的过渡 */
.left-canvas-card.canvas-upload-success {
    animation: canvasUploadSuccess 0.4s ease-out forwards;
}

.left-canvas-card.canvas-preset-generating-card {
    overflow: hidden;
}

.left-canvas-card.canvas-preset-generating-card .canvas-preset-generating-label,
.left-canvas-card.canvas-preset-generating-card .canvas-card-error-text {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 12px;
    text-align: center;
    font-size: 13px;
    line-height: 1.4;
    color: #374151;
    background: rgba(255, 255, 255, 0.92);
    box-sizing: border-box;
}

.left-canvas-card.canvas-preset-generating-card.canvas-card-error {
    border-color: rgba(239, 68, 68, 0.65);
}

.left-canvas-card.canvas-preset-generating-card.canvas-card-error .canvas-card-error-text {
    color: #b91c1c;
}

@keyframes canvasUploadSuccess {
    0%   { box-shadow: 0 0 0 0 rgba(99, 102, 241, 0.6); }
    50%  { box-shadow: 0 0 0 6px rgba(99, 102, 241, 0.3); }
    100% { box-shadow: var(--shadow-lg); }
}

.canvas-url-render-placeholder {
    position: absolute;
    z-index: 9988;
    box-sizing: border-box;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
    border: calc(1px / var(--current-scale, 1)) dashed rgba(17, 24, 39, 0.32);
    background: rgba(255, 255, 255, 0.72);
    box-shadow: 0 10px 30px rgba(15, 23, 42, 0.12);
    pointer-events: none;
}

.canvas-url-render-placeholder::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.55), transparent);
    animation: canvasUrlRenderSweep 1.15s ease-in-out infinite;
}

.canvas-url-render-content {
    position: relative;
    z-index: 1;
    width: 210px;
    padding: 12px 14px;
    border: 1px solid rgba(17, 24, 39, 0.10);
    border-radius: 8px;
    background: rgba(255, 255, 255, 0.94);
    box-shadow: 0 8px 24px rgba(15, 23, 42, 0.14);
    transform: scale(calc(1 / var(--current-scale, 1)));
    transform-origin: center;
}

.canvas-url-render-title {
    display: flex;
    align-items: center;
    gap: 8px;
    color: #111827;
    font-size: 12px;
    font-weight: 600;
    line-height: 18px;
    white-space: nowrap;
}

.canvas-url-render-count {
    margin-left: auto;
    color: #6b7280;
    font-weight: 500;
}

.canvas-url-render-spinner {
    width: 13px;
    height: 13px;
    border: 2px solid rgba(17, 24, 39, 0.16);
    border-top-color: #111827;
    border-radius: 50%;
    animation: canvasUrlRenderSpin 0.72s linear infinite;
    flex-shrink: 0;
    transform-origin: center;
}

.canvas-url-render-progress {
    height: 6px;
    margin-top: 10px;
    overflow: hidden;
    border-radius: 999px;
    background: #e5e7eb;
}

.canvas-url-render-progress-fill {
    width: var(--canvas-url-render-progress, 0%);
    height: 100%;
    border-radius: inherit;
    background: #111827;
    transition: width 0.18s ease;
}

@keyframes canvasUrlRenderSweep {
    0% { transform: translateX(-100%); opacity: 0.35; }
    50% { opacity: 0.75; }
    100% { transform: translateX(100%); opacity: 0.35; }
}

@keyframes canvasUrlRenderSpin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.canvas-change-ratio-panel {
    position: absolute;
    width: 238px;
    padding: 12px;
    border: 1px solid rgba(15, 23, 42, 0.12);
    border-radius: 8px;
    background: #ffffff;
    box-shadow: 0 12px 34px rgba(15, 23, 42, 0.18);
    color: #1f2937;
    cursor: default;
    user-select: none;
}

.change-ratio-title {
    margin-bottom: 10px;
    font-size: 13px;
    font-weight: 700;
    line-height: 1.3;
}

.change-ratio-fields {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 8px;
}

.change-ratio-fields label {
    display: grid;
    gap: 5px;
    min-width: 0;
    font-size: 12px;
    font-weight: 600;
    color: #475569;
}

.change-ratio-fields input {
    width: 100%;
    height: 34px;
    border: 1px solid #cbd5e1;
    border-radius: 6px;
    padding: 0 8px;
    background: #fff;
    color: #111827;
    font-size: 13px;
    outline: none;
    -moz-appearance: textfield;
}

.change-ratio-fields input::-webkit-outer-spin-button,
.change-ratio-fields input::-webkit-inner-spin-button {
    margin: 0;
    -webkit-appearance: none;
}

.change-ratio-fields input:focus {
    border-color: #2563eb;
    box-shadow: 0 0 0 2px rgba(37, 99, 235, 0.14);
}

.change-ratio-preview {
    min-height: 26px;
    margin-top: 9px;
    padding: 6px 8px;
    border-radius: 6px;
    background: #f1f5f9;
    color: #334155;
    font-size: 12px;
    line-height: 1.2;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.change-ratio-actions {
    display: flex;
    justify-content: flex-end;
    gap: 8px;
    margin-top: 10px;
}

.change-ratio-btn {
    height: 32px;
    min-width: 56px;
    border: 1px solid transparent;
    border-radius: 999px;
    padding: 0 14px;
    font-size: 13px;
    font-weight: 700;
    cursor: pointer;
}

.change-ratio-btn.secondary {
    background: #ffffff;
    border-color: #d1d5db;
    color: #111827;
}

.change-ratio-btn.primary {
    background: #111827;
    color: #fff;
}

.change-ratio-btn:disabled {
    cursor: not-allowed;
    opacity: 0.5;
}

.canvas-reverse-prompt-panel {
    position: absolute;
    width: 340px;
    min-height: 220px;
    padding: 13px;
    border: 1px solid rgba(15, 23, 42, 0.12);
    border-radius: 8px;
    background: #ffffff;
    box-shadow: 0 12px 34px rgba(15, 23, 42, 0.18);
    color: #111827;
    cursor: default;
    user-select: text;
    transition: box-shadow 0.18s ease, border-color 0.18s ease;
}

.canvas-reverse-prompt-panel.is-highlight {
    border-color: #111827;
    box-shadow: 0 14px 38px rgba(15, 23, 42, 0.28);
}

.reverse-prompt-title {
    font-size: 13px;
    font-weight: 800;
    line-height: 1.3;
}

.reverse-prompt-status {
    min-height: 18px;
    margin-top: 5px;
    color: #64748b;
    font-size: 12px;
    line-height: 1.4;
}

.reverse-prompt-text {
    height: 138px;
    margin-top: 8px;
    padding: 10px;
    border: 1px solid #d1d5db;
    border-radius: 7px;
    background: #f8fafc;
    color: #111827;
    font-size: 13px;
    line-height: 1.55;
    white-space: pre-wrap;
    overflow: auto;
}

.canvas-reverse-prompt-panel.is-loading .reverse-prompt-text {
    color: #475569;
}

.reverse-prompt-actions {
    display: flex;
    justify-content: flex-end;
    gap: 8px;
    margin-top: 11px;
}

.reverse-prompt-btn {
    height: 32px;
    min-width: 58px;
    border: 0;
    border-radius: 999px;
    padding: 0 15px;
    background: #111827;
    color: #ffffff;
    font-size: 13px;
    font-weight: 700;
    cursor: pointer;
}

.reverse-prompt-btn:disabled {
    cursor: not-allowed;
    opacity: 0.55;
}

/* ============================================
   空画布右键工具菜单
   ============================================ */
#customCanvasMenu {
    position: fixed;
    z-index: 10080;
    min-width: 170px;
    padding: 6px;
    background: #111111;
    color: #ffffff;
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 9px;
    box-shadow: 0 18px 42px rgba(0, 0, 0, 0.28);
    opacity: 0;
    transform: translateY(-2px) scale(0.98);
    transform-origin: top left;
    transition: opacity 0.12s ease, transform 0.12s ease;
    pointer-events: none;
}

#customCanvasMenu.ctx-visible {
    opacity: 1;
    transform: translateY(0) scale(1);
    pointer-events: auto;
}

.custom-ctx-item {
    display: flex;
    align-items: center;
    justify-content: flex-start;
    gap: 8px;
    width: 100%;
    min-height: 30px;
    padding: 0 10px;
    border: none;
    border-radius: 6px;
    background: transparent;
    color: #ffffff;
    cursor: pointer;
    font-size: 12px;
    line-height: 30px;
    text-align: left;
    user-select: none;
    position: relative;
    white-space: nowrap;
    font-family: inherit;
    transition: background 0.12s ease;
}

.custom-ctx-icon {
    width: 16px;
    height: 16px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    flex: 0 0 16px;
    color: rgba(255, 255, 255, 0.92);
}

.custom-ctx-icon svg {
    width: 16px;
    height: 16px;
    display: block;
}

.custom-ctx-label {
    min-width: 0;
    flex: 1 1 auto;
}

.custom-ctx-item:hover {
    background: rgba(255, 255, 255, 0.12);
}

.custom-ctx-arrow {
    margin-left: auto;
    color: rgba(255, 255, 255, 0.56);
    font-size: 18px;
    line-height: 1;
}

.custom-ctx-separator {
    height: 1px;
    margin: 5px 4px;
    background: rgba(255, 255, 255, 0.1);
}

.custom-ctx-submenu-trigger {
    overflow: visible;
}

.custom-ctx-submenu-trigger::after {
    content: '';
    position: absolute;
    top: -6px;
    right: -12px;
    width: 14px;
    height: calc(100% + 12px);
}

.custom-ctx-submenu {
    position: absolute;
    left: 100%;
    top: -6px;
    min-width: 148px;
    padding: 6px;
    margin-left: 8px;
    background: #111111;
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 9px;
    box-shadow: 0 18px 42px rgba(0, 0, 0, 0.28);
    display: none;
    z-index: 10081;
}

.custom-ctx-submenu-trigger:hover .custom-ctx-submenu,
.custom-ctx-submenu:hover {
    display: block;
}

#customCanvasMenu.submenu-left .custom-ctx-submenu {
    left: auto;
    right: 100%;
    margin-left: 0;
    margin-right: 8px;
}

#customCanvasMenu.submenu-left .custom-ctx-submenu-trigger::after {
    right: auto;
    left: -12px;
}

/* 上传状态 */
.left-canvas-card.custom-uploading::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(255, 255, 255, 0.45);
    border-radius: inherit;
    z-index: 10;
    animation: canvasBreathing 0.8s ease-in-out infinite;
}

.upload-hint {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    z-index: 11;
    background: rgba(0, 0, 0, 0.65);
    color: #fff;
    font-size: 13px;
    font-weight: 600;
    padding: 6px 16px;
    border-radius: 20px;
    white-space: nowrap;
    pointer-events: none;
    backdrop-filter: blur(4px);
}

/* ============================================
   用户消息气泡操作按钮样式
   ============================================ */

/* 消息底部容器（包含时间和按钮） */
.msg-footer {
    display: flex;
    align-items: center;
    gap: 0;
    margin-top: 2px;
}

/* 操作按钮容器 */
.msg-actions {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    opacity: 0;
    transition: opacity 0.2s ease;
}

/* 悬浮在消息上时显示按钮 */
.chat-message.user:hover .msg-actions {
    opacity: 1;
}

/* 操作按钮 */
.msg-action-btn {
    width: 24px;
    height: 24px;
    padding: 0;
    border: none;
    background: rgba(255, 255, 255, 0.25);
    border-radius: 6px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.15s ease;
    color: #666;
    position: relative;
}

/* 按钮悬停效果 */
.msg-action-btn:hover {
    background: rgba(255, 255, 255, 0.4);
    transform: scale(1.1);
}

/* 按钮激活/成功状态 */
.msg-action-btn.success {
    background: rgba(34, 197, 94, 0.2);
    color: #22c55e;
}

.msg-action-btn.success svg {
    stroke: #22c55e;
}

/* 按钮错误状态 */
.msg-action-btn.error {
    background: rgba(239, 68, 68, 0.2);
    color: #ef4444;
}

.msg-action-btn.error svg {
    stroke: #ef4444;
}

/* SVG图标样式 */
.msg-action-btn svg {
    width: 14px;
    height: 14px;
    stroke: currentColor;
}

/* 模型信息气泡 */
.msg-model-popup {
    position: fixed;
    top: 0;
    left: 0;
    transform: translateY(-50%);
    background: #f5f0e6;
    border: 1px solid #e0d8c8;
    border-radius: 8px;
    padding: 8px 12px;
    font-size: 0.75rem;
    z-index: 1500;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    box-sizing: border-box;
    max-width: calc(100vw - 24px);
    max-height: calc(100vh - 24px);
    overflow-y: auto;
    white-space: normal;
    overflow-wrap: anywhere;
    animation: modelPopupIn 0.15s ease-out;
    pointer-events: auto;
}

@keyframes modelPopupIn {
    from {
        opacity: 0;
        transform: translateY(-50%) scale(0.95);
    }
    to {
        opacity: 1;
        transform: translateY(-50%) scale(1);
    }
}

/* 模型信息气泡内的每一项 */
.model-popup-item {
    display: flex;
    align-items: flex-start;
    gap: 8px;
    padding: 3px 0;
    min-width: 0;
}

.model-popup-item:not(:last-child) {
    border-bottom: 1px solid rgba(0, 0, 0, 0.06);
}

.model-popup-label {
    color: #888;
    font-weight: 500;
    flex-shrink: 0;
}

.model-popup-value {
    color: #333;
    font-weight: 600;
    min-width: 0;
}

.model-popup-empty {
    color: #999;
    text-align: center;
    padding: 4px 0;
}

/* 确保用户消息容器有定位参考 */
.chat-message.user {
    position: relative;
}

/* 消息时间和操作按钮同行显示 */
.chat-message.user .msg-footer {
    display: flex;
    align-items: center;
}

.chat-message.user .msg-time {
    display: inline-flex;
    align-items: center;
    color: #9ca3af;
    font-size: 0.7rem;
}

/* ===================== 提示词库（prompts_manager） ===================== */

.prompts-trigger {
    position: relative;
}

.prompts-list-item:hover {
    background: var(--bg-color);
}

.prompts-list-item .prompts-use-btn:hover {
    background: var(--primary-hover, #4f46e5);
}

.prompts-list-item .prompts-del-btn:hover {
    background: #fee2e2;
}

#promptsTextarea:focus {
    border-color: var(--primary-color, #6366f1);
    box-shadow: 0 0 0 2px rgba(99, 102, 241, 0.15);
}

.usage-warning-blocker {
    position: fixed;
    inset: 0;
    z-index: 60000;
    display: none;
    align-items: center;
    justify-content: center;
    padding: 24px;
    background: rgba(15, 23, 42, 0.62);
    backdrop-filter: blur(3px);
}

.usage-warning-blocker.active {
    display: flex;
}

.usage-warning-card {
    width: min(520px, 100%);
    border-radius: 8px;
    background: #ffffff;
    box-shadow: 0 28px 80px rgba(15, 23, 42, 0.35);
    overflow: hidden;
}

.usage-warning-card-head {
    padding: 18px 20px 14px;
    border-bottom: 1px solid #eef2f7;
}

.usage-warning-card-title {
    color: #111827;
    font-size: 18px;
    font-weight: 800;
}

.usage-warning-card-sub {
    margin-top: 5px;
    color: #64748b;
    font-size: 13px;
}

.usage-warning-card-body {
    padding: 18px 20px 20px;
}

.usage-warning-card-message {
    max-height: 220px;
    overflow: auto;
    color: #1f2937;
    font-size: 14px;
    line-height: 1.7;
    white-space: pre-wrap;
    overflow-wrap: anywhere;
}

.usage-warning-countdown {
    margin-top: 16px;
    color: #b45309;
    font-size: 13px;
    font-weight: 700;
}

.usage-warning-agree {
    display: none;
    width: 100%;
    height: 38px;
    margin-top: 18px;
    border: 1px solid #2563eb;
    border-radius: 8px;
    background: #2563eb;
    color: #ffffff;
    font-size: 14px;
    font-weight: 800;
    cursor: pointer;
}

.usage-warning-agree.visible {
    display: block;
}