/* =========================================================
   AI Image Studio - Editorial Magazine Theme (Light + Dark)
   ========================================================= */

:root {
    /* 杂志主色 - 温暖纸质感 (Light) */
    --bg-base: #f8f6f1;
    --bg-panel: #ffffff;
    --bg-elevated: #f4f1e9;
    --border: #e5e0d5;
    --border-strong: #d4ccc0;
    --text-primary: #1a1814;
    --text-secondary: #5c5649;
    --text-muted: #8a8375;

    /* 杂志强调色 */
    --accent: #c2410c;        /* 赭石红 */
    --accent-hover: #e05d1f;
    --warning: #b45309;
    --danger: #b91c1c;
    --success: #166534;

    /* 字体 - 杂志印刷感 */
    --font-serif: 'Playfair Display', Georgia, 'Times New Roman', serif;
    --font-sans: 'Source Sans Pro', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-mono: 'IBM Plex Mono', 'SF Mono', monospace;

    /* 间距与圆角 */
    --radius-sm: 2px;
    --radius: 4px;
    --space-xs: 8px;
    --space-sm: 14px;
    --space: 22px;
    --space-lg: 36px;

    --transition-smooth: 200ms cubic-bezier(0.23, 1, 0.32, 1);
}

/* 暗色主题 - 系统偏好 */
@media (prefers-color-scheme: dark) {
    :root {
        /* 深色杂志背景 */
        --bg-base: #141311;
        --bg-panel: #1c1a17;
        --bg-elevated: #25221e;
        --border: #3a3630;
        --border-strong: #4a463f;
        --text-primary: #f4f1e9;
        --text-secondary: #b8b0a3;
        --text-muted: #7d7669;

        /* 暗色下更亮的强调色 */
        --accent: #e05d1f;
        --accent-hover: #f07a3d;
        --warning: #d97706;
        --danger: #dc2626;
        --success: #16a34a;
    }
}

/* 暗色主题 - 手动切换 (.dark 类) */
:root.dark {
    /* 深色杂志背景 */
    --bg-base: #141311;
    --bg-panel: #1c1a17;
    --bg-elevated: #25221e;
    --border: #3a3630;
    --border-strong: #4a463f;
    --text-primary: #f4f1e9;
    --text-secondary: #b8b0a3;
    --text-muted: #7d7669;

    /* 暗色下更亮的强调色 */
    --accent: #e05d1f;
    --accent-hover: #f07a3d;
    --warning: #d97706;
    --danger: #dc2626;
    --success: #16a34a;
}

/* 全局重置 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    background: var(--bg-base);
    color: var(--text-primary);
    font-family: var(--font-sans);
    font-size: 15px;
    line-height: 1.7;
    min-height: 100vh;
    padding: 48px 24px;
}

/* 顶部 Header - 杂志封面式 */
.app-header {
    max-width: 1480px;
    margin: 0 auto 48px;
    text-align: center;
    padding-bottom: 32px;
    border-bottom: 2px solid var(--text-primary);
    position: relative;
}

.logo-area {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 14px;
    margin-bottom: 12px;
}

.logo-icon {
    font-size: 32px;
    line-height: 1;
}

.app-header h1 {
    font-family: var(--font-serif);
    font-size: 42px;
    font-weight: 700;
    letter-spacing: -0.03em;
    color: var(--text-primary);
}

.app-header h1 .gradient-text {
    color: var(--accent);
    font-weight: 800;
}

.subtitle {
    color: var(--text-secondary);
    font-size: 15px;
    max-width: 520px;
    margin: 0 auto;
}

/* 主容器 */
.app-container {
    max-width: 1480px;
    margin: 0 auto;
}

/* 主网格 - 杂志双栏 */
.app-main {
    display: grid;
    grid-template-columns: 460px 1fr;
    gap: 48px;
    margin-bottom: 64px;
}

@media (max-width: 900px) {
    .app-main {
        grid-template-columns: 1fr;
        gap: 40px;
    }
}

/* 面板 - 杂志卡片 */
.control-panel,
.preview-panel,
.history-section {
    background: var(--bg-panel);
    border: 1px solid var(--border);
    padding: 36px 32px;
    box-shadow: 0 2px 12px rgba(0,0,0,0.04);
}

.section-title {
    font-family: var(--font-serif);
    font-size: 17px;
    font-weight: 700;
    letter-spacing: -0.01em;
    color: var(--text-primary);
    margin-bottom: 24px;
    padding-bottom: 14px;
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    gap: 10px;
}

/* 表单 */
.form-group {
    margin-bottom: 28px;
}

.form-group label {
    display: block;
    font-size: 11px;
    font-weight: 700;
    color: var(--text-secondary);
    margin-bottom: 10px;
    text-transform: uppercase;
    letter-spacing: 0.12em;
}

textarea {
    width: 100%;
    min-height: 132px;
    background: var(--bg-elevated);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 16px;
    color: var(--text-primary);
    font-family: var(--font-sans);
    font-size: 15px;
    line-height: 1.6;
    resize: vertical;
    outline: none;
    transition: border-color var(--transition-smooth);
}

textarea:focus {
    border-color: var(--accent);
    background: var(--bg-elevated);
}

/* 下拉框 */
.select-wrapper {
    position: relative;
}

select {
    width: 100%;
    background: var(--bg-elevated);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 12px 16px;
    color: var(--text-primary);
    font-size: 14px;
    font-family: var(--font-sans);
    outline: none;
    cursor: pointer;
    appearance: none;
}

select:focus {
    border-color: var(--accent);
}

.select-wrapper::after {
    content: '▾';
    position: absolute;
    right: 16px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
    pointer-events: none;
    font-size: 11px;
}

/* 渠道选择 - 杂志标签 */
.channel-options {
    display: flex;
    flex-direction: row;
    flex-wrap: nowrap;
    gap: 10px;
}

.channel-card {
    flex: 1 1 0;
    min-width: 0;
    background: var(--bg-elevated);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 14px 18px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 9px;
    cursor: pointer;
    transition: all var(--transition-smooth);
    user-select: none;
}

.channel-card input {
    display: none;
}

.channel-card span {
    font-size: 13px;
    font-weight: 600;
    color: var(--text-secondary);
}

.channel-card:hover {
    border-color: var(--border-strong);
    background: #fff;
}

.channel-card.active {
    border-color: var(--accent);
    background: #fff;
    box-shadow: 0 1px 3px rgba(194, 65, 12, 0.15);
}

.channel-card.active span {
    color: var(--accent);
    font-weight: 700;
}

/* 比例选择 - 杂志卡片 */
.ratio-options {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.ratio-card {
    flex: 1 1 auto;
    min-width: 106px;
    background: var(--bg-elevated);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 16px 12px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
    cursor: pointer;
    transition: all var(--transition-smooth);
    user-select: none;
}

.ratio-card input {
    display: none;
}

.ratio-visual-area {
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.ratio-visual {
    border: 2px solid var(--text-muted);
    background: transparent;
    transition: all var(--transition-smooth);
}

.ratio-visual.square { width: 26px; height: 26px; }
.ratio-visual.landscape { width: 34px; height: 20px; }
.ratio-visual.portrait { width: 20px; height: 34px; }

.ratio-card span {
    font-size: 12px;
    color: var(--text-secondary);
    font-weight: 600;
}

.ratio-card:hover {
    border-color: var(--border-strong);
    background: #fff;
}

.ratio-card.active {
    border-color: var(--accent);
    background: #fff;
}

.ratio-card.active .ratio-visual {
    border-color: var(--accent);
}

/* 生成按钮 - 杂志实心按钮 */
.shimmer-btn {
    width: 100%;
    background: var(--accent);
    color: #fff;
    border: 1px solid var(--accent);
    border-radius: var(--radius-sm);
    padding: 16px 24px;
    font-size: 14px;
    font-weight: 700;
    letter-spacing: 0.06em;
    cursor: pointer;
    transition: all var(--transition-smooth);
    margin-top: 10px;
    text-transform: uppercase;
}

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

.shimmer-btn:active {
    transform: translateY(1px);
}

/* 预览区 */
.preview-container {
    min-height: 460px;
    background: var(--bg-elevated);
    border: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    position: relative;
}

.preview-placeholder {
    text-align: center;
    color: var(--text-muted);
    padding: 56px 28px;
}

.placeholder-icon {
    font-size: 48px;
    margin-bottom: 16px;
    opacity: 0.5;
}

.preview-placeholder p {
    font-size: 15px;
    margin-bottom: 6px;
    color: var(--text-secondary);
}

.placeholder-hint {
    font-size: 13px !important;
    color: var(--text-muted) !important;
}

/* Loading */
.preview-loading {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 18px;
    color: var(--text-secondary);
}

.loader-spinner {
    width: 40px;
    height: 40px;
    border: 3px solid var(--border);
    border-top-color: var(--accent);
    border-radius: 50%;
    animation: spin 900ms linear infinite;
}

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

.loading-status {
    font-size: 14px;
    font-weight: 600;
}

.loading-hint {
    font-size: 12px;
    color: var(--text-muted);
}

/* 生成结果 */
.preview-result {
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    padding: 20px;
    gap: 20px;
}

.image-wrapper {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    background: #fff;
    border: 1px solid var(--border);
    overflow: hidden;
}

.image-wrapper img {
    max-width: 100%;
    max-height: 400px;
    object-fit: contain;
}

.result-actions {
    display: flex;
    flex-direction: column;
    gap: 14px;
}

.url-bar {
    display: flex;
    align-items: center;
    background: var(--bg-elevated);
    border: 1px solid var(--border);
    padding: 6px 6px 6px 16px;
}

.url-label {
    font-size: 10px;
    font-weight: 800;
    color: var(--accent);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-right: 12px;
    flex-shrink: 0;
}

.url-bar input {
    flex: 1;
    min-width: 0;
    background: transparent;
    border: none;
    outline: none;
    color: var(--text-primary);
    font-family: var(--font-mono);
    font-size: 13px;
}

.action-buttons {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
}

.action-btn {
    padding: 11px 18px;
    font-size: 13px;
    font-weight: 700;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border);
    background: var(--bg-panel);
    color: var(--text-primary);
    cursor: pointer;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    transition: all var(--transition-smooth);
}

.action-btn:hover {
    background: var(--bg-elevated);
    border-color: var(--border-strong);
}

.primary-btn {
    background: var(--accent);
    border-color: var(--accent);
    color: #fff;
}

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

/* 历史记录区 */
.history-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 22px;
    flex-wrap: wrap;
    gap: 16px;
}

.history-controls {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-wrap: wrap;
}

.refresh-btn {
    background: var(--bg-elevated);
    border: 1px solid var(--border);
    padding: 8px 16px;
    font-size: 12px;
    font-weight: 600;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all var(--transition-smooth);
}

.refresh-btn:hover {
    background: #fff;
    color: var(--text-primary);
}

.upload-btn {
    background: var(--accent);
    color: #fff;
    border: 1px solid var(--accent);
    padding: 8px 18px;
    font-size: 12px;
    font-weight: 700;
    cursor: pointer;
    transition: all var(--transition-smooth);
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.upload-btn:hover {
    filter: brightness(1.1);
    transform: translateY(-1px);
    box-shadow: 0 4px 14px rgba(0, 0, 0, 0.15);
}

.drag-over {
    outline: 2px dashed var(--accent) !important;
    outline-offset: -4px;
    background: rgba(255, 255, 255, 0.05) !important;
}

/* 视图切换 */
.view-toggle {
    display: flex;
    background: var(--bg-elevated);
    border: 1px solid var(--border);
    padding: 3px;
}

.toggle-btn {
    padding: 7px 16px;
    font-size: 12px;
    font-weight: 700;
    border: none;
    background: transparent;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all var(--transition-smooth);
}

.toggle-btn.active {
    background: var(--accent);
    color: #fff;
}

/* 批量操作 */
.batch-actions {
    display: flex;
    gap: 8px;
}

.batch-btn {
    padding: 8px 14px;
    font-size: 12px;
    font-weight: 700;
    border: 1px solid var(--border);
    background: var(--bg-elevated);
    color: var(--text-secondary);
    cursor: pointer;
    transition: all var(--transition-smooth);
}

.danger-btn {
    border-color: rgba(185, 28, 28, 0.3);
    color: #b91c1c;
}

.danger-btn:hover {
    background: var(--danger);
    color: #fff;
    border-color: var(--danger);
}

/* 历史网格 */
.history-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(176px, 1fr));
    gap: 16px;
    min-height: 140px;
}

.history-empty {
    grid-column: 1 / -1;
    padding: 72px 24px;
    text-align: center;
    color: var(--text-muted);
    font-size: 14px;
}

/* 历史卡片 */
.history-card {
    position: relative;
    background: var(--bg-elevated);
    border: 1px solid var(--border);
    overflow: hidden;
    aspect-ratio: 1 / 1;
    cursor: pointer;
    transition: all var(--transition-smooth);
}

.history-card:hover {
    border-color: var(--border-strong);
    box-shadow: 0 4px 16px rgba(0,0,0,0.06);
}

.history-card img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.history-card-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(26,24,20,0.88) 0%, rgba(26,24,20,0.35) 48%, transparent 100%);
    padding: 14px;
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    opacity: 0;
    transition: opacity var(--transition-smooth);
}

.history-card:hover .history-card-overlay {
    opacity: 1;
}

.history-card-time {
    font-size: 11px;
    font-family: var(--font-mono);
    color: rgba(255,255,255,0.75);
    margin-bottom: 8px;
}

.history-card-actions {
    display: flex;
    gap: 8px;
}

.history-card-btn {
    flex: 1;
    padding: 5px 10px;
    font-size: 11px;
    font-weight: 700;
    background: rgba(255,255,255,0.12);
    border: 1px solid rgba(255,255,255,0.2);
    color: #fff;
    cursor: pointer;
    text-align: center;
    text-decoration: none;
    transition: all var(--transition-smooth);
}

.history-card-btn:hover {
    background: var(--accent);
    border-color: var(--accent);
}

/* 列表视图 */
.history-grid.list-view {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.history-grid.list-view .history-card {
    aspect-ratio: auto;
    display: flex;
    flex-direction: row;
    align-items: center;
    padding: 12px 18px;
    height: 60px;
}

.history-grid.list-view .history-card img {
    display: none;
}

.history-grid.list-view .history-card-overlay {
    position: static;
    opacity: 1;
    background: none;
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
    padding: 0;
    width: 100%;
}

.history-grid.list-view .history-card-time {
    font-size: 13px;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 16px;
}

.history-grid.list-view .history-card-time::after {
    content: attr(data-filename);
    font-size: 12px;
    color: var(--text-muted);
    font-family: var(--font-mono);
    background: var(--bg-elevated);
    padding: 2px 8px;
    border: 1px solid var(--border);
}

/* Checkbox */
.card-checkbox-wrapper {
    position: absolute;
    top: 10px;
    left: 10px;
    z-index: 10;
    width: 20px;
    height: 20px;
    background: rgba(248,246,241,0.92);
    border: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
}

.history-card.selected .card-checkbox-wrapper {
    background: var(--accent);
    border-color: var(--accent);
}

.card-checkbox-wrapper::after {
    content: '';
    width: 4px;
    height: 8px;
    border: 1.5px solid transparent;
    border-left: 0;
    border-top: 0;
    transform: rotate(45deg) scale(0);
    transition: transform 120ms ease;
}

.history-card.selected .card-checkbox-wrapper::after {
    border-color: #fff;
    transform: rotate(45deg) scale(1);
}

/* Toast */
.toast-container {
    position: fixed;
    top: 28px;
    right: 28px;
    z-index: 10000;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.toast {
    background: var(--bg-panel);
    border: 1px solid var(--border);
    border-left: 4px solid var(--accent);
    padding: 15px 20px;
    min-width: 280px;
    box-shadow: 0 6px 24px rgba(0,0,0,0.1);
    display: flex;
    align-items: center;
    gap: 12px;
    transform: translateX(120%);
    transition: transform 320ms cubic-bezier(0.23, 1, 0.32, 1);
}

.toast.show {
    transform: translateX(0);
}

.toast-success { border-left-color: var(--success); }
.toast-error { border-left-color: var(--danger); }

.toast-icon { font-size: 16px; }
.toast-message { font-size: 14px; }

/* 登录遮罩 */
.login-overlay {
    position: fixed;
    inset: 0;
    background: rgba(248,246,241,0.96);
    backdrop-filter: blur(10px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
}

.login-overlay.hidden {
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
}

.login-card {
    width: 100%;
    max-width: 380px;
    background: var(--bg-panel);
    border: 1px solid var(--border);
    padding: 42px 36px;
    text-align: center;
}

.login-logo-icon {
    font-size: 38px;
    margin-bottom: 18px;
}

.login-card h2 {
    font-family: var(--font-serif);
    font-size: 22px;
    font-weight: 700;
    margin-bottom: 8px;
}

.login-desc {
    font-size: 14px;
    color: var(--text-secondary);
    margin-bottom: 26px;
}

.password-field {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.password-field input {
    background: var(--bg-elevated);
    border: 1px solid var(--border);
    padding: 14px 18px;
    color: var(--text-primary);
    font-size: 14px;
    text-align: center;
    outline: none;
    font-family: var(--font-mono);
}

.password-field input:focus {
    border-color: var(--accent);
}

.login-btn {
    background: var(--accent);
    color: #fff;
    border: 1px solid var(--accent);
    padding: 14px;
    font-size: 13px;
    font-weight: 700;
    cursor: pointer;
    text-transform: uppercase;
    letter-spacing: 0.06em;
}

.login-btn:hover {
    background: var(--accent-hover);
}

/* 确认弹窗 */
.confirm-modal {
    position: fixed;
    inset: 0;
    background: rgba(248,246,241,0.94);
    backdrop-filter: blur(6px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10000;
}

.confirm-modal.hidden {
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
}

.confirm-card {
    width: 90%;
    max-width: 360px;
    background: var(--bg-panel);
    border: 1px solid var(--border);
    padding: 32px 30px;
    text-align: center;
}

.confirm-logo-icon {
    font-size: 32px;
    margin-bottom: 14px;
}

.confirm-card h3 {
    font-family: var(--font-serif);
    font-size: 19px;
    font-weight: 700;
    margin-bottom: 10px;
}

.confirm-card p {
    font-size: 14px;
    color: var(--text-secondary);
    margin-bottom: 24px;
}

.confirm-actions {
    display: flex;
    gap: 12px;
}

.confirm-actions button {
    flex: 1;
    padding: 12px;
    font-size: 13px;
    font-weight: 700;
    cursor: pointer;
    border: 1px solid var(--border);
    background: var(--bg-elevated);
    color: var(--text-primary);
}

.confirm-actions .danger-btn {
    background: var(--danger);
    border-color: var(--danger);
    color: #fff;
}

/* =========================================================
   双排大图预览弹窗 (Side-by-Side Dual-Column Lightbox Modal)
   ========================================================= */
.preview-modal {
    position: fixed;
    inset: 0;
    z-index: 10000;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 32px 24px;
    opacity: 1;
    visibility: visible;
    transition: opacity var(--transition-smooth), visibility var(--transition-smooth);
}

.preview-modal.hidden {
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
}

.preview-modal-backdrop {
    position: absolute;
    inset: 0;
    background: rgba(10, 10, 10, 0.85);
    backdrop-filter: blur(16px);
    cursor: zoom-out;
}

.preview-modal-container {
    position: relative;
    z-index: 1;
    display: flex;
    flex-direction: row;
    width: 100%;
    max-width: 1160px;
    height: 86vh;
    max-height: 850px;
    background: var(--bg-panel);
    border: 1px solid var(--border-strong);
    border-radius: var(--radius, 4px);
    box-shadow: 0 32px 90px rgba(0, 0, 0, 0.6);
    overflow: hidden;
    animation: modalScaleIn 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes modalScaleIn {
    from {
        opacity: 0;
        transform: scale(0.96) translateY(8px);
    }
    to {
        opacity: 1;
        transform: scale(1) translateY(0);
    }
}

.modal-close-btn {
    position: absolute;
    top: 14px;
    right: 14px;
    width: 32px;
    height: 32px;
    background: var(--bg-elevated);
    border: 1px solid var(--border);
    border-radius: 50%;
    color: var(--text-secondary);
    font-size: 14px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10;
    transition: all var(--transition-smooth);
}

.modal-close-btn:hover {
    background: var(--accent);
    border-color: var(--accent);
    color: #fff;
    transform: rotate(90deg);
}

/* 左侧：大图展示区 */
.preview-modal-media {
    flex: 1.4;
    background: rgba(0, 0, 0, 0.45);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 24px;
    overflow: hidden;
    min-height: 380px;
    border-right: 1px solid var(--border);
}

.preview-media-wrapper {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    height: 100%;
}

.preview-modal-media img {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
    border-radius: var(--radius-sm, 2px);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.4);
    transition: transform 0.2s ease;
}

/* 右侧：详细元数据与提示词信息区 */
.preview-modal-sidebar {
    flex: 1;
    min-width: 380px;
    max-width: 480px;
    display: flex;
    flex-direction: column;
    padding: 28px;
    background: var(--bg-panel);
    overflow-y: auto;
}

.modal-sidebar-header {
    margin-bottom: 20px;
    padding-right: 28px;
}

.modal-sidebar-title {
    font-size: 16px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 12px;
    letter-spacing: -0.01em;
}

.modal-meta-badges {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.modal-meta-badges .badge {
    display: inline-flex;
    align-items: center;
    padding: 4px 10px;
    font-size: 11px;
    font-weight: 600;
    border-radius: var(--radius-sm, 2px);
    border: 1px solid var(--border);
}

.modal-meta-badges .badge-channel {
    background: var(--accent);
    border-color: var(--accent);
    color: #fff;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.modal-meta-badges .badge-model {
    background: var(--bg-elevated);
    color: var(--text-primary);
    font-family: var(--font-mono);
}

.modal-meta-badges .badge-ratio {
    background: var(--bg-elevated);
    color: var(--text-secondary);
}

/* 提示词完整展示区域 */
.modal-prompt-section {
    flex: 1;
    display: flex;
    flex-direction: column;
    margin-bottom: 20px;
    min-height: 180px;
}

.prompt-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 10px;
}

.prompt-label {
    font-size: 12px;
    font-weight: 700;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.mini-copy-btn {
    background: var(--bg-elevated);
    border: 1px solid var(--border);
    color: var(--text-secondary);
    font-size: 11px;
    font-weight: 600;
    padding: 4px 10px;
    border-radius: var(--radius-sm, 2px);
    cursor: pointer;
    transition: all var(--transition-smooth);
}

.mini-copy-btn:hover {
    background: var(--accent);
    border-color: var(--accent);
    color: #fff;
}

.modal-prompt-box {
    flex: 1;
    padding: 16px;
    background: var(--bg-elevated);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm, 2px);
    font-size: 13px;
    line-height: 1.7;
    color: var(--text-primary);
    word-break: break-word;
    white-space: pre-wrap;
    overflow-y: auto;
    max-height: 380px;
    user-select: text;
}

/* 底部操作与在线链接 */
.modal-sidebar-footer {
    display: flex;
    flex-direction: column;
    gap: 12px;
    padding-top: 18px;
    border-top: 1px solid var(--border);
    margin-top: auto;
}

.modal-url-row {
    display: flex;
    align-items: center;
    gap: 8px;
}

.modal-url-row .url-label {
    font-size: 11px;
    font-weight: 700;
    color: var(--text-muted);
    text-transform: uppercase;
    flex-shrink: 0;
}

.modal-url-input {
    flex: 1;
    height: 36px;
    background: var(--bg-elevated);
    border: 1px solid var(--border);
    padding: 0 12px;
    font-size: 12px;
    font-family: var(--font-mono);
    color: var(--text-secondary);
    border-radius: var(--radius-sm, 2px);
    outline: none;
    min-width: 0;
}

.modal-action-row {
    display: flex;
    gap: 10px;
}

.modal-action-row .action-btn {
    flex: 1;
    text-align: center;
    padding: 9px 12px;
    font-size: 12px;
    font-weight: 600;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

/* 移动端与窄屏响应式 (单列垂直堆叠) */
@media (max-width: 860px) {
    .preview-modal {
        padding: 16px;
    }
    
    .preview-modal-container {
        flex-direction: column;
        height: auto;
        max-height: 92vh;
        overflow-y: auto;
    }
    
    .preview-modal-media {
        border-right: none;
        border-bottom: 1px solid var(--border);
        min-height: 240px;
        padding: 16px;
    }
    
    .preview-modal-media img {
        max-height: 36vh;
    }
    
    .preview-modal-sidebar {
        min-width: unset;
        max-width: 100%;
        padding: 20px;
    }
    
    .modal-prompt-box {
        max-height: 180px;
    }
}

/* 加载更多 */
.load-more-container {
    display: flex;
    justify-content: center;
    margin-top: 28px;
}

.load-more-container button {
    padding: 12px 32px;
    font-size: 13px;
    font-weight: 700;
    border: 1px solid var(--border);
    background: var(--bg-elevated);
    color: var(--text-secondary);
    cursor: pointer;
}

.load-more-container button:hover {
    background: #fff;
    color: var(--text-primary);
}

/* 主题切换按钮 */
.theme-toggle-btn {
    position: absolute;
    top: 24px;
    right: 24px;
    width: 36px;
    height: 36px;
    border: 1px solid var(--border);
    background: var(--bg-panel);
    color: var(--text-primary);
    font-size: 16px;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-smooth);
}

.theme-toggle-btn:hover {
    background: var(--bg-elevated);
    border-color: var(--accent);
}

/* 隐藏类 */
.hidden {
    display: none !important;
}

/* 历史记录卡片元数据样式 */
.history-card-meta {
    font-size: 10px;
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: 8px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    display: flex;
    align-items: center;
    gap: 6px;
    pointer-events: auto;
}

.history-card-meta .meta-channel {
    background: var(--accent);
    color: #fff;
    padding: 1px 4px;
    border-radius: 2px;
    font-weight: 700;
    font-size: 8px;
    text-transform: uppercase;
    flex-shrink: 0;
}

.history-card-meta .meta-prompt {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

/* 列表视图元数据适配 */
.history-grid.list-view .history-card-meta {
    flex: 1;
    margin: 0 16px;
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    color: var(--text-secondary);
    min-width: 0;
}

.history-grid.list-view .history-card-meta .meta-channel {
    background: var(--bg-elevated);
    border: 1px solid var(--border);
    color: var(--text-primary);
    padding: 2px 6px;
    font-size: 9px;
}



/* 错误抖动 */
.shake {
    animation: shake 300ms ease;
}

@keyframes shake {
    0%,100%{transform:translateX(0)}
    20%,60%{transform:translateX(-7px)}
    40%,80%{transform:translateX(7px)}
}

/* 渐入渐现微动画 */
.fade-in {
    animation: fadeIn 300ms ease-out forwards;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(5px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}