:root {
    --system-blue: #0a84ff;
    --system-indigo: #5e5ce6;
    --system-purple: #bf5af2;
    --system-pink: #ff375f;
    --system-red: #ff453a;
    --system-orange: #ff9f0a;
    --system-yellow: #ffd60a;
    --system-green: #30d158;
    --system-teal: #6cd7d5;
    --system-cyan: #64d2ff;
    --bg-primary: #0e0e10;
    --bg-secondary: #1a1a1e;
    --bg-tertiary: #28282c;
    --bg-quaternary: #38383c;
    --bg-elevated: #1e1e22;
    --bg-hover: #2e2e32;
    --bg-card: #181820;
    --bg-overlay: rgba(0, 0, 0, 0.6);
    --text-primary: #f0f0f2;
    --text-secondary: #ababae;
    --text-tertiary: #8a8a8e;
    --text-placeholder: #505054;
    --border-color: rgba(255, 255, 255, 0.13);
    --border-light: rgba(255, 255, 255, 0.07);
    --border-hover: rgba(255, 255, 255, 0.24);
    --border-separator: rgba(255, 255, 255, 0.10);
    --accent-primary: #0a84ff;
    --accent-secondary: #3a9cff;
    --accent-tertiary: #6bb4ff;
    --accent-rgb: 10, 132, 255;
    --accent-glow: rgba(var(--accent-rgb), 0.2);
    --accent-gradient: linear-gradient(135deg, #0a84ff 0%, #3a9cff 100%);
    --success: #30d158;
    --success-light: #34c759;
    --warning: #ff9f0a;
    --error: #ff453a;
    --error-light: #ff375f;
    --gold: #ffd60a;
    --gold-bg: rgba(255, 214, 10, 0.1);
    --purple: #bf5af2;
    --purple-bg: rgba(191, 90, 242, 0.1);
    --green: #30d158;
    --green-bg: rgba(48, 209, 88, 0.1);
    --red: #ff453a;
    --red-bg: rgba(255, 69, 58, 0.1);
    --gray: #8e8e93;
    --gray-bg: rgba(142, 142, 147, 0.1);
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 12px;
    --spacing-lg: 16px;
    --spacing-xl: 24px;
    --spacing-xxl: 32px;
    --radius-xs: 6px;
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 18px;
    --radius-xl: 24px;
    --radius-full: 50px;
    --transition-fast: 0.15s cubic-bezier(0.25, 0.1, 0.25, 1.0);
    --transition-normal: 0.25s cubic-bezier(0.25, 0.1, 0.25, 1.0);
    --transition-smooth: 0.35s cubic-bezier(0.25, 0.1, 0.25, 1.0);
    --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.15);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.2);
    --shadow-xl: 0 12px 32px rgba(0, 0, 0, 0.25);
    --shadow-glow: 0 0 20px var(--accent-glow);
    --sidebar-width: 280px;
}

[data-theme="light"] {
    --bg-primary: #ffffff;
    --bg-secondary: #f5f5f7;
    --bg-tertiary: #e5e5e7;
    --bg-quaternary: #d1d1d6;
    --bg-elevated: #ffffff;
    --bg-hover: #e5e5e7;
    --bg-card: #ffffff;
    --bg-overlay: rgba(0, 0, 0, 0.4);
    --text-primary: #000000;
    --text-secondary: #4a4a4c;
    --text-tertiary: #8e8e93;
    --text-placeholder: #c2c2c4;
    --border-color: rgba(0, 0, 0, 0.08);
    --border-light: rgba(0, 0, 0, 0.03);
    --border-hover: rgba(0, 0, 0, 0.15);
    --border-separator: rgba(0, 0, 0, 0.05);
    --accent-primary: #007aff;
    --accent-secondary: #3a9cff;
    --accent-tertiary: #6bb4ff;
    --accent-rgb: 0, 122, 255;
    --accent-glow: rgba(var(--accent-rgb), 0.15);
    --accent-gradient: linear-gradient(135deg, #007aff 0%, #3a9cff 100%);
    --success: #34c759;
    --success-light: #30d158;
    --warning: #ff9500;
    --error: #ff3b30;
    --error-light: #ff453a;
    --gold: #ffcc00;
    --gold-bg: rgba(255, 204, 0, 0.1);
    --purple: #bf5af2;
    --purple-bg: rgba(191, 90, 242, 0.1);
    --green: #34c759;
    --green-bg: rgba(52, 199, 89, 0.1);
    --red: #ff3b30;
    --red-bg: rgba(255, 59, 48, 0.1);
    --gray: #8e8e93;
    --gray-bg: rgba(142, 142, 147, 0.1);
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 2px 8px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 12px 32px rgba(0, 0, 0, 0.12);
    --shadow-glow: 0 0 20px var(--accent-glow);
}

[data-theme="light"] .sidebar {
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    box-shadow: 1px 0 8px rgba(0, 0, 0, 0.04);
}

[data-theme="light"] .config-panel,
[data-theme="light"] .result-section {
    background: rgba(255, 255, 255, 0.7);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    box-shadow: var(--shadow-sm);
}

[data-theme="light"] .stat-card {
    background: rgba(255, 255, 255, 0.7);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    box-shadow: var(--shadow-sm);
}

[data-theme="light"] .generate-btn {
    box-shadow: 0 4px 12px rgba(var(--accent-rgb), 0.25);
}

[data-theme="light"] .generate-btn:hover:not(:disabled) {
    box-shadow: 0 6px 16px rgba(var(--accent-rgb), 0.3);
}

[data-theme="light"] kbd {
    background: rgba(0, 0, 0, 0.05);
    border-color: rgba(0, 0, 0, 0.1);
    box-shadow: 0 1px 0 rgba(0, 0, 0, 0.1);
}

[data-theme="light"] .toolbar-btn {
    background: rgba(0, 0, 0, 0.05);
}

[data-theme="light"] .toolbar-btn:hover {
    background: rgba(0, 0, 0, 0.1);
}

[data-theme="light"] .feedback-editor {
    background: rgba(0, 0, 0, 0.05);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

[data-theme="light"] .add-file-btn {
    box-shadow: 0 2px 8px rgba(var(--accent-rgb), 0.15);
}

[data-theme="light"] .file-upload-item.uploaded .file-hint {
    color: var(--success);
}

[data-theme="light"] .comment-card {
    background: rgba(255, 255, 255, 0.7);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    box-shadow: var(--shadow-sm);
}

[data-theme="light"] .action-btn.primary {
    box-shadow: 0 2px 8px rgba(var(--accent-rgb), 0.2);
}

[data-theme="light"] .toast {
    background: rgba(30, 30, 30, 0.8);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.12);
}

[data-theme="light"] .result-table tbody tr:hover {
    background: rgba(0, 0, 0, 0.03);
}

[data-theme="light"] .feedback-content:hover {
    background: rgba(0, 0, 0, 0.03);
}

[data-theme="light"] .copied-row::after {
    background: rgba(0, 0, 0, 0.7);
    color: var(--success);
}

[data-theme="light"] .modal-content {
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    box-shadow: 0 25px 60px rgba(0, 0, 0, 0.15);
}

[data-theme="light"] .sidebar-header {
    background: linear-gradient(180deg, rgba(var(--accent-rgb), 0.03) 0%, transparent 100%);
}

*,
*::before,
*::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html,
body {
    height: 100%;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Helvetica Neue', sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.5;
    overflow: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

::-webkit-scrollbar {
    width: 6px;
    height: 6px;
}

::-webkit-scrollbar-track {
    background: transparent;
}

::-webkit-scrollbar-thumb {
    background: var(--border-hover);
    border-radius: 3px;
    transition: background 0.2s;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--text-muted);
}

::-webkit-scrollbar-corner {
    background: transparent;
}

* {
    scrollbar-width: thin;
    scrollbar-color: var(--border-hover) transparent;
}

.app {
    display: flex;
    height: 100vh;
}

.sidebar {
    width: var(--sidebar-width);
    background: rgba(28, 28, 30, 0.8);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    flex-shrink: 0;
    position: relative;
    box-shadow: inset -1px 0 0 var(--border-light);
}

.sidebar::after {
    content: '';
    position: absolute;
    top: 0;
    right: -1px;
    bottom: 0;
    width: 1px;
    background: linear-gradient(180deg,
            rgba(var(--accent-rgb), 0.2) 0%,
            rgba(var(--accent-rgb), 0.05) 30%,
            transparent 100%);
    pointer-events: none;
}

.sidebar-header {
    padding: var(--spacing-xl) var(--spacing-lg) var(--spacing-md);
    border-bottom: 1px solid var(--border-light);
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: linear-gradient(180deg, rgba(var(--accent-rgb), 0.03) 0%, transparent 100%);
}

.app-title {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--text-primary);
    letter-spacing: -0.01em;
}

.theme-slider-switch {
    position: relative;
    display: inline-block;
    width: 60px;
    height: 32px;
    margin-left: auto;
}

.theme-slider-switch input {
    opacity: 0;
    width: 0;
    height: 0;
}

.theme-slider-track {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(0, 0, 0, 0.2);
    box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.2);
    border-radius: 34px;
    transition: background-color 0.4s cubic-bezier(0.25, 0.1, 0.25, 1.0);
    border: 1px solid var(--border-color);
}

[data-theme="light"] .theme-slider-track {
    background-color: rgba(255, 255, 255, 0.5);
    box-shadow: inset 0 2px 5px rgba(0, 0, 0, 0.05);
}

.theme-slider-thumb {
    position: absolute;
    height: 24px;
    width: 24px;
    left: 4px;
    bottom: 3px;
    background-color: #2c2c2e;
    border-radius: 50%;
    transition: transform 0.4s cubic-bezier(0.68, -0.55, 0.265, 1.55), background-color 0.4s;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.3);
}

[data-theme="light"] .theme-slider-thumb {
    background-color: #ffffff;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.15);
}

.theme-slider-switch input:checked+.theme-slider-track .theme-slider-thumb {
    transform: translateX(26px);
}

.thumb-icon-sun,
.thumb-icon-moon {
    width: 14px;
    height: 14px;
    position: absolute;
    transition: opacity 0.4s, transform 0.4s cubic-bezier(0.68, -0.55, 0.265, 1.55), color 0.4s;
}

.thumb-icon-sun {
    opacity: 0;
    transform: translateY(20px);
    color: var(--text-primary);
}

.thumb-icon-moon {
    opacity: 1;
    transform: translateY(0);
    color: var(--text-primary);
}

.theme-slider-switch input:checked+.theme-slider-track .thumb-icon-sun {
    opacity: 1;
    transform: translateY(0);
    color: var(--warning);
}

.theme-slider-switch input:checked+.theme-slider-track .thumb-icon-moon {
    opacity: 0;
    transform: translateY(-20px);
}

.sidebar-nav {
    flex: 1;
    overflow-y: auto;
    padding: var(--spacing-md);
}

.nav-section {
    margin-bottom: var(--spacing-lg);
}

.nav-title {
    font-size: 0.7rem;
    font-weight: 600;
    color: var(--text-tertiary);
    text-transform: uppercase;
    letter-spacing: 0.8px;
    margin-bottom: var(--spacing-sm);
    padding-left: 2px;
}

.file-upload-item {
    margin-bottom: var(--spacing-sm);
    position: relative;
}

.file-upload-label {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: all var(--transition-normal);
    -webkit-backdrop-filter: blur(10px);
    backdrop-filter: blur(10px);
}

.file-upload-label:hover {
    background: rgba(255, 255, 255, 0.08);
    border-color: var(--border-hover);
    transform: translateY(-1px);
    box-shadow: var(--shadow-sm);
}

.file-upload-item.uploaded .file-upload-label {
    border-color: var(--success);
    background: rgba(48, 209, 88, 0.1);
}

.file-upload-item.uploaded .file-upload-label:hover {
    border-color: var(--success-light);
    background: rgba(48, 209, 88, 0.15);
}

.file-upload-item.dragover .file-upload-label {
    border-color: var(--accent-primary);
    background: rgba(var(--accent-rgb), 0.15);
    box-shadow: 0 0 0 3px var(--accent-glow);
}

.file-upload-icon {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-md);
    flex-shrink: 0;
    transition: all var(--transition-fast);
}

.file-upload-label:hover .file-upload-icon {
    background: rgba(var(--accent-rgb), 0.2);
}

.file-upload-icon svg {
    width: 18px;
    height: 18px;
    color: var(--text-secondary);
    transition: color var(--transition-fast);
}

.file-upload-label:hover .file-upload-icon svg {
    color: var(--accent-primary);
}

.file-upload-item.uploaded .file-upload-icon {
    background: rgba(48, 209, 88, 0.2);
}

.file-upload-item.uploaded .file-upload-icon svg {
    color: var(--success);
}

.file-upload-text {
    display: flex;
    flex-direction: column;
    gap: 2px;
    overflow: hidden;
}

.file-label {
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-primary);
}

.file-hint {
    font-size: 0.75rem;
    color: var(--text-tertiary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.file-upload-item.uploaded .file-hint {
    color: var(--success);
    font-weight: 500;
}

.add-file-btn {
    position: absolute;
    right: 8px;
    top: 50%;
    transform: translateY(-50%);
    width: 26px;
    height: 26px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--accent-gradient);
    border: none;
    border-radius: 50%;
    cursor: pointer;
    transition: all var(--transition-fast);
    z-index: 2;
    box-shadow: 0 2px 8px var(--accent-glow);
}

.add-file-btn:hover {
    transform: translateY(-50%) scale(1.15);
    box-shadow: 0 4px 16px var(--accent-glow);
}

.add-file-btn:active {
    transform: translateY(-50%) scale(1.0);
}

.add-file-btn svg {
    width: 13px;
    height: 13px;
    color: white;
}

.toggle-group {
    display: flex;
    background: rgba(255, 255, 255, 0.05);
    border-radius: var(--radius-full);
    padding: 4px;
    border: 1px solid var(--border-color);
    -webkit-backdrop-filter: blur(10px);
    backdrop-filter: blur(10px);
}

.toggle-btn {
    flex: 1;
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: 0.78rem;
    font-weight: 500;
    color: var(--text-secondary);
    background: transparent;
    border: none;
    border-radius: calc(var(--radius-full) - 4px);
    cursor: pointer;
    transition: all var(--transition-normal);
    position: relative;
}

.toggle-btn:hover {
    color: var(--text-primary);
}

.toggle-btn.active {
    background: var(--accent-primary);
    color: white;
    box-shadow: 0 2px 6px rgba(var(--accent-rgb), 0.3);
    font-weight: 600;
}

.radio-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.radio-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    cursor: pointer;
    padding: var(--spacing-sm) 0;
}

.radio-item input {
    width: 18px;
    height: 18px;
    accent-color: var(--accent-primary);
    cursor: pointer;
}

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

.radio-item input:checked+.radio-label {
    color: var(--text-primary);
    font-weight: 500;
}

.switch-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: 0.82rem;
    color: var(--text-secondary);
    cursor: pointer;
    margin-bottom: var(--spacing-md);
    padding: var(--spacing-sm) 0;
}

.switch-input {
    display: none;
}

.switch-slider {
    width: 48px;
    height: 28px;
    background: var(--border-color);
    border-radius: 14px;
    position: relative;
    transition: all var(--transition-normal);
    flex-shrink: 0;
    cursor: pointer;
}

.switch-slider::after {
    content: '';
    position: absolute;
    width: 24px;
    height: 24px;
    background: white;
    border-radius: 50%;
    top: 2px;
    left: 2px;
    transition: all var(--transition-normal);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.4);
}

.switch-input:checked+.switch-slider {
    background: var(--success);
}

.switch-input:checked+.switch-slider::after {
    transform: translateX(20px);
    background: white;
}

.text-input {
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: 0.8rem;
    color: var(--text-primary);
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    outline: none;
    transition: all var(--transition-fast);
    -webkit-backdrop-filter: blur(10px);
    backdrop-filter: blur(10px);
}

.text-input:focus {
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 3px var(--accent-glow);
}

.text-input::placeholder {
    color: var(--text-placeholder);
}

.switch-hint {
    font-size: 0.7rem;
    color: var(--text-tertiary);
    margin-top: var(--spacing-xs);
    padding-left: 2px;
}

.sidebar-footer {
    padding: var(--spacing-lg) var(--spacing-lg) var(--spacing-xl);
    border-top: 1px solid var(--border-light);
    background: linear-gradient(0deg, rgba(var(--accent-rgb), 0.03) 0%, transparent 100%);
}

.generate-btn {
    width: 100%;
    padding: 14px var(--spacing-md);
    font-size: 0.88rem;
    font-weight: 600;
    color: white;
    background: var(--accent-primary);
    border: none;
    border-radius: var(--radius-full);
    cursor: pointer;
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
    letter-spacing: 0.02em;
    box-shadow: 0 4px 12px rgba(var(--accent-rgb), 0.3);
}

.generate-btn:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(var(--accent-rgb), 0.4);
}

.generate-btn:active:not(:disabled) {
    transform: translateY(0);
    box-shadow: 0 2px 8px rgba(var(--accent-rgb), 0.3);
}

.generate-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    box-shadow: none;
    transform: none;
}

.refresh-tip {
    margin-top: var(--spacing-md);
    font-size: 0.7rem;
    color: var(--text-tertiary);
    text-align: center;
    line-height: 1.5;
}

kbd {
    display: inline-block;
    padding: 2px 8px;
    font-size: 0.65rem;
    font-family: inherit;
    color: var(--text-primary);
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xs);
    box-shadow: 0 1px 0 rgba(0, 0, 0, 0.1);
}

.github-link {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    margin-top: var(--spacing-md);
    font-size: 0.75rem;
    color: var(--text-tertiary);
    text-decoration: none;
    transition: all var(--transition-fast);
    opacity: 0.8;
}

.github-link:hover {
    color: var(--text-primary);
    opacity: 1;
    transform: translateY(-1px);
}

.github-link svg {
    width: 16px;
    height: 16px;
}

.main-content {
    flex: 1;
    overflow-y: auto;
    padding: var(--spacing-xxl) var(--spacing-xxl) var(--spacing-xxl) var(--spacing-xxl);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
    background: var(--bg-primary);
}

.config-panel {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    transition: all var(--transition-normal);
    -webkit-backdrop-filter: blur(10px);
    backdrop-filter: blur(10px);
}

.config-panel:hover {
    border-color: var(--border-hover);
}

.panel-header {
    margin-bottom: var(--spacing-xl);
}

.panel-header h3 {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
    letter-spacing: -0.01em;
}

.panel-header p {
    font-size: 0.8rem;
    color: var(--text-secondary);
}

.comment-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-md);
}

.comment-card {
    background: rgba(255, 255, 255, 0.05);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    border-left: 3px solid;
    transition: all var(--transition-normal);
    -webkit-backdrop-filter: blur(10px);
    backdrop-filter: blur(10px);
}

.comment-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.comment-card.gold {
    border-left-color: var(--gold);
    background: var(--gold-bg);
}

.comment-card.purple {
    border-left-color: var(--purple);
    background: var(--purple-bg);
}

.comment-card.green {
    border-left-color: var(--green);
    background: var(--green-bg);
}

.comment-card.red {
    border-left-color: var(--red);
    background: var(--red-bg);
}

.comment-card.gray {
    border-left-color: var(--gray);
    background: var(--gray-bg);
}

.card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--spacing-md);
}

.card-title {
    font-size: 0.85rem;
    font-weight: 600;
}

.card-badge {
    font-size: 0.65rem;
    padding: 3px 10px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-full);
    color: var(--text-tertiary);
    font-weight: 500;
}

.comment-card textarea {
    width: 100%;
    padding: var(--spacing-md) var(--spacing-md);
    font-size: 0.8rem;
    font-family: inherit;
    color: var(--text-primary);
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    resize: vertical;
    outline: none;
    transition: all var(--transition-fast);
    line-height: 1.5;
    -webkit-backdrop-filter: blur(10px);
    backdrop-filter: blur(10px);
}

.comment-card textarea:focus {
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 3px var(--accent-glow);
}

.comment-card textarea::placeholder {
    color: var(--text-placeholder);
}

.info-panel {
    padding: var(--spacing-lg);
}

.info-box {
    display: flex;
    gap: var(--spacing-md);
    align-items: center;
}

.info-content h4 {
    font-size: 0.88rem;
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
}

.info-content p {
    font-size: 0.78rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

.stats-grid {
    display: flex;
    flex-direction: row;
    align-items: stretch;
    gap: var(--spacing-md);
    flex-wrap: nowrap;
    justify-content: space-between;
    margin-bottom: var(--spacing-lg);
}

.stat-card {
    flex: 1 1 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-lg) var(--spacing-lg);
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    text-align: center;
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
    -webkit-backdrop-filter: blur(10px);
    backdrop-filter: blur(10px);
}

.stat-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--accent-gradient);
    opacity: 0;
    transition: opacity var(--transition-normal);
}

.stat-card:hover {
    transform: translateY(-2px);
    border-color: var(--border-hover);
    box-shadow: var(--shadow-md);
}

.stat-card:hover::before {
    opacity: 1;
}

.stat-value {
    font-size: 1.6rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--spacing-xs);
}

.stat-label {
    font-size: 0.78rem;
    color: var(--text-tertiary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.result-section {
    flex: 1;
    display: flex;
    flex-direction: column;
}

.result-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--spacing-lg);
    padding-bottom: var(--spacing-md);
    border-bottom: 1px solid var(--border-color);
}

.result-header h2 {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0;
    letter-spacing: -0.01em;
}

.result-actions {
    display: flex;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
    align-items: center;
}

.action-btn {
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: 0.78rem;
    font-weight: 500;
    border: none;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all var(--transition-fast);
    white-space: nowrap;
}

.action-btn.primary {
    background: var(--accent-primary);
    color: white;
    box-shadow: 0 2px 8px rgba(var(--accent-rgb), 0.3);
}

.action-btn.primary:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(var(--accent-rgb), 0.4);
}

.action-btn.primary:active {
    transform: translateY(0);
}

.action-btn.secondary {
    background: rgba(255, 255, 255, 0.05);
    color: var(--text-secondary);
    border: 1px solid var(--border-color);
    -webkit-backdrop-filter: blur(10px);
    backdrop-filter: blur(10px);
}

.action-btn.secondary:hover {
    background: rgba(255, 255, 255, 0.1);
    color: var(--text-primary);
    border-color: var(--border-hover);
    transform: translateY(-1px);
}

.action-btn.secondary:active {
    transform: translateY(0);
}

.result-list {
    flex: 1;
    overflow-y: auto;
}

.table-container {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    overflow: hidden;
    -webkit-backdrop-filter: blur(10px);
    backdrop-filter: blur(10px);
}

.result-table {
    width: 100%;
    border-collapse: collapse;
}

.result-table thead {
    background: rgba(255, 255, 255, 0.03);
    position: sticky;
    top: 0;
    z-index: 5;
}

.result-table th {
    padding: var(--spacing-lg) var(--spacing-lg);
    text-align: left;
    font-size: 0.78rem;
    font-weight: 600;
    color: var(--text-tertiary);
    border-bottom: 1px solid var(--border-color);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.result-table tbody tr {
    transition: background var(--transition-fast);
    position: relative;
}

.result-table tbody tr:hover {
    background: rgba(255, 255, 255, 0.05);
}

.result-table td {
    padding: var(--spacing-xl) var(--spacing-xl);
    border-bottom: 1px solid var(--border-separator);
    vertical-align: top;
}

.result-table tbody tr:last-child td {
    border-bottom: none;
}

.name-td {
    width: 180px;
    min-width: 160px;
}

.name-cell {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
}

.name-main {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 14px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
    position: relative;
    -webkit-backdrop-filter: blur(10px);
    backdrop-filter: blur(10px);
}

.name-main:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: var(--border-hover);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.name-main:active {
    transform: scale(0.95);
}

.student-name {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--accent-primary);
    white-space: nowrap;
    line-height: 1.3;
}

.copy-icon {
    width: 14px;
    height: 14px;
    color: var(--accent-primary);
    opacity: 0;
    transform: translateX(-4px);
    transition: all var(--transition-fast);
    flex-shrink: 0;
}

.name-main:hover .copy-icon {
    opacity: 1;
    transform: translateX(0);
}

.student-tag {
    position: relative;
    font-size: 0.78rem;
    padding: 6px 14px;
    border-radius: var(--radius-full);
    cursor: pointer;
    font-weight: 500;
    letter-spacing: 0.03em;
    transition: all var(--transition-fast);
    user-select: none;
    white-space: nowrap;
    line-height: 1.4;
    border: 1px solid transparent;
}

.student-tag.online {
    background: rgba(0, 122, 255, 0.15);
    color: #0a84ff;
}

.student-tag.offline {
    background: rgba(52, 199, 89, 0.15);
    color: #34c759;
}

.student-tag:hover {
    background-color: rgba(255, 255, 255, 0.2);
}

.student-tag:active {
    transform: scale(0.95);
}

.feedback-cell {
    position: relative;
}

.feedback-wrapper {
    display: block;
}

.feedback-content {
    font-size: 0.82rem;
    color: var(--text-secondary);
    white-space: pre-wrap;
    line-height: 1.75;
    padding: var(--spacing-lg);
    background: rgba(255, 255, 255, 0.03);
    border-radius: var(--radius-lg) var(--radius-lg) 0 0;
    cursor: pointer;
    transition: all var(--transition-normal);
    border: 1px solid var(--border-color);
    border-bottom: none;
    -webkit-backdrop-filter: blur(10px);
    backdrop-filter: blur(10px);
}

.feedback-content:hover {
    background: rgba(255, 255, 255, 0.05);
    border-color: var(--border-hover);
}

.feedback-toolbar {
    display: flex;
    align-items: center;
    gap: 1px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 0 0 var(--radius-lg) var(--radius-lg);
    overflow: hidden;
    border: 1px solid var(--border-color);
    border-top: none;
    -webkit-backdrop-filter: blur(10px);
    backdrop-filter: blur(10px);
}

.toolbar-btn {
    flex: 1;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 10px var(--spacing-md);
    font-size: 0.75rem;
    font-weight: 500;
    font-family: inherit;
    color: var(--text-tertiary);
    background: transparent;
    border: none;
    cursor: pointer;
    transition: all var(--transition-fast);
    white-space: nowrap;
}

.toolbar-btn svg {
    width: 14px;
    height: 14px;
    flex-shrink: 0;
}

.toolbar-btn:hover {
    color: var(--text-primary);
    background: rgba(255, 255, 255, 0.1);
}

.toolbar-btn.copy-btn:hover {
    color: var(--accent-primary);
}

.toolbar-btn.edit-toolbar-btn:hover {
    color: var(--warning);
}

.toolbar-btn:active {
    transform: scale(0.98);
}

.highlight-row {
    animation: rowHighlight 2s ease;
}

@keyframes rowHighlight {
    0% {
        background: rgba(var(--accent-rgb), 0.15);
    }

    100% {
        background: transparent;
    }
}

.copied-row {
    position: relative;
}

.copied-row::after {
    content: '已复制\A(点击此处撤回)';
    white-space: pre;
    text-align: center;
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--success);
    font-size: 1.2rem;
    font-weight: 600;
    pointer-events: auto;
    cursor: pointer;
    z-index: 10;
    letter-spacing: 0.05em;
    transition: all var(--transition-fast);
}

.copied-row:hover::after {
    background: rgba(0, 0, 0, 0.8);
    color: white;
}

.copied-row .name-main,
.copied-row .feedback-content {
    opacity: 0.3;
    pointer-events: none;
    position: relative;
    z-index: 2;
}

.copied-row .feedback-toolbar {
    opacity: 0;
    pointer-events: none;
}

/* ========================================
   Focus Mode (copy name → focus on one student)
   ======================================== */

/* Masked rows — semi-transparent overlay */
.masked-row {
    position: relative;
    opacity: 0.15;
    pointer-events: none;
    transition: opacity 0.35s ease;
    filter: blur(1px);
}

/* Allow already copied rows to stay visible even when masked */
tr.masked-row.copied-row {
    opacity: 0.55;
    filter: none;
}

.masked-row .feedback-toolbar {
    opacity: 0;
}

/* Focused row — highlighted with border glow */
.focused-row {
    position: relative;
    z-index: 5;
    animation: focusRowPulse 0.4s ease-out;
}

.focused-row .feedback-content {
    border-color: var(--accent-primary) !important;
    box-shadow: 0 0 20px rgba(var(--accent-rgb), 0.15), inset 0 0 0 1px rgba(var(--accent-rgb), 0.1);
}

.focused-row .feedback-toolbar {
    border-color: var(--accent-primary) !important;
}

.focused-row .name-main {
    border-color: var(--accent-primary);
    background: rgba(var(--accent-rgb), 0.08);
}

@keyframes focusRowPulse {
    0% {
        transform: scale(1.01);
        opacity: 0.7;
    }

    100% {
        transform: scale(1);
        opacity: 1;
    }
}

/* Focus indicator — floating bar at top */
.focus-indicator {
    position: fixed;
    top: 12px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 1000;
    animation: focusIndicatorIn 0.35s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.focus-indicator-exit {
    animation: focusIndicatorOut 0.3s ease forwards;
}

.focus-indicator-content {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 20px;
    background: rgba(20, 20, 24, 0.92);
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: 50px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3), 0 0 0 1px rgba(255, 255, 255, 0.05);
    white-space: nowrap;
}

[data-theme="light"] .focus-indicator-content {
    background: rgba(255, 255, 255, 0.92);
    border-color: rgba(0, 0, 0, 0.08);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.12), 0 0 0 1px rgba(0, 0, 0, 0.04);
}

.focus-indicator-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--accent-primary);
    flex-shrink: 0;
    animation: focusDotPulse 1.5s ease-in-out infinite;
}

@keyframes focusDotPulse {

    0%,
    100% {
        opacity: 1;
        transform: scale(1);
    }

    50% {
        opacity: 0.5;
        transform: scale(0.8);
    }
}

.focus-indicator-name {
    font-size: 0.88rem;
    font-weight: 700;
    color: var(--text-primary);
    letter-spacing: -0.01em;
}

.focus-indicator-hint {
    font-size: 0.7rem;
    color: var(--text-tertiary);
    font-weight: 500;
    padding-left: 8px;
    border-left: 1px solid var(--border-color);
}

@keyframes focusIndicatorIn {
    0% {
        opacity: 0;
        transform: translateX(-50%) translateY(-20px) scale(0.9);
    }

    100% {
        opacity: 1;
        transform: translateX(-50%) translateY(0) scale(1);
    }
}

@keyframes focusIndicatorOut {
    0% {
        opacity: 1;
        transform: translateX(-50%) translateY(0) scale(1);
    }

    100% {
        opacity: 0;
        transform: translateX(-50%) translateY(-15px) scale(0.95);
    }
}

.feedback-editor {
    width: 100%;
    min-height: 150px;
    padding: var(--spacing-lg);
    background: rgba(255, 255, 255, 0.05);
    border: 2px solid var(--accent-primary);
    border-radius: var(--radius-lg);
    color: var(--text-primary);
    font-size: 0.82rem;
    line-height: 1.7;
    resize: vertical;
    font-family: inherit;
    transition: box-shadow var(--transition-fast);
    -webkit-backdrop-filter: blur(10px);
    backdrop-filter: blur(10px);
}

.feedback-editor:focus {
    outline: none;
    box-shadow: 0 0 0 3px var(--accent-glow);
}

.ai-status {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 4px 10px;
    border-radius: var(--radius-full);
    font-size: 0.7rem;
    font-weight: 500;
    margin-top: var(--spacing-xs);
}

.ai-status.processing {
    background: rgba(255, 159, 10, 0.15);
    color: var(--warning);
}

.ai-status.done {
    background: rgba(52, 199, 89, 0.15);
    color: var(--success);
}

.ai-loading {
    width: 10px;
    height: 10px;
    border: 2px solid currentColor;
    border-top-color: transparent;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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

.empty-state {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    color: var(--text-tertiary);
    padding: var(--spacing-xxl);
}

.empty-icon {
    width: 88px;
    height: 88px;
    margin-bottom: var(--spacing-xl);
    opacity: 0.3;
    animation: emptyFloat 3s ease-in-out infinite;
}

@keyframes emptyFloat {

    0%,
    100% {
        transform: translateY(0);
    }

    50% {
        transform: translateY(-8px);
    }
}

.empty-icon svg {
    width: 100%;
    height: 100%;
}

.empty-state h3 {
    font-size: 1.2rem;
    margin-bottom: var(--spacing-sm);
    color: var(--text-secondary);
    font-weight: 600;
}

.empty-state p {
    font-size: 0.85rem;
    color: var(--text-tertiary);
}

.toast {
    position: fixed;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%) translateY(100px);
    padding: 14px var(--spacing-xl);
    background: rgba(30, 30, 30, 0.8);
    color: var(--text-primary);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-full);
    font-size: 0.85rem;
    font-weight: 500;
    box-shadow: var(--shadow-lg);
    opacity: 0;
    transition: all var(--transition-smooth);
    z-index: 1000;
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    white-space: nowrap;
}

.toast.show {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
}

.checkbox-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.checkbox-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    cursor: pointer;
    padding: var(--spacing-xs) 0;
}

.checkbox-item input[type="checkbox"] {
    width: 16px;
    height: 16px;
    accent-color: var(--accent-primary);
    cursor: pointer;
}

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

.checkbox-item input:checked+.checkbox-label {
    color: var(--text-primary);
}

@media (max-width: 1024px) {
    .comment-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .sidebar {
        display: none;
    }

    .main-content {
        padding: var(--spacing-md);
    }

    .stats-grid {
        flex-wrap: wrap;
    }

    .result-header {
        flex-direction: column;
        gap: var(--spacing-md);
        align-items: flex-start;
    }

    .result-actions {
        width: 100%;
    }

    .result-actions .action-btn {
        flex: 1;
    }
}

.file-list {
    display: none;
    flex-direction: column;
    gap: 4px;
    margin-top: 8px;
    margin-bottom: 10px;
}

.file-list.has-files {
    display: flex;
}

.file-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 10px var(--spacing-md);
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
    -webkit-backdrop-filter: blur(10px);
    backdrop-filter: blur(10px);
}

.file-item:hover {
    border-color: var(--border-hover);
    background: rgba(255, 255, 255, 0.1);
}

.file-info {
    display: flex;
    align-items: center;
    gap: 8px;
    overflow: hidden;
    flex: 1;
}

.file-icon {
    width: 14px;
    height: 14px;
    color: var(--accent-secondary);
    flex-shrink: 0;
}

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

.file-remove {
    padding: 6px;
    color: var(--text-tertiary);
    cursor: pointer;
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
    flex-shrink: 0;
}

.file-remove:hover {
    color: var(--error);
    background: rgba(255, 59, 48, 0.15);
}

.file-remove svg {
    width: 14px;
    height: 14px;
}

.clear-files-btn {
    font-size: 0.75rem;
    color: var(--text-tertiary);
    background: transparent;
    border: 1px dashed var(--border-color);
    border-radius: var(--radius-md);
    padding: var(--spacing-sm) var(--spacing-md);
    width: 100%;
    cursor: pointer;
    transition: all var(--transition-fast);
    display: none;
    align-items: center;
    justify-content: center;
    gap: 6px;
    margin-top: var(--spacing-sm);
}

.clear-files-btn:hover {
    color: var(--error);
    border-color: var(--error);
    background: rgba(255, 59, 48, 0.1);
}

.clear-files-btn svg {
    width: 13px;
    height: 13px;
}

.clear-files-btn.visible {
    display: flex;
}

.lesson-inputs {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

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

.lesson-row label {
    font-size: 0.78rem;
    color: var(--text-secondary);
    min-width: 70px;
}

.lesson-input {
    width: 60px;
    padding: 8px 10px;
    font-size: 0.8rem;
    color: var(--text-primary);
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    outline: none;
    transition: all var(--transition-fast);
    text-align: center;
    -webkit-backdrop-filter: blur(10px);
    backdrop-filter: blur(10px);
}

.lesson-input:focus {
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 3px var(--accent-glow);
}

.lesson-input::placeholder {
    color: var(--text-muted);
    font-size: 0.68rem;
}

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

.lesson-input[type=number] {
    -moz-appearance: textfield;
    appearance: textfield;
}

.lesson-auto-hint {
    font-size: 0.68rem;
    color: var(--text-muted);
    flex: 1;
}

.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.4);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    animation: modalFadeIn 0.2s ease;
}

@keyframes modalFadeIn {
    from {
        opacity: 0;
    }

    to {
        opacity: 1;
    }
}

.modal-content {
    background: rgba(30, 30, 30, 0.8);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xxl);
    width: 100%;
    max-width: 420px;
    box-shadow: var(--shadow-xl);
    animation: modalSlideUp 0.3s cubic-bezier(0.25, 0.1, 0.25, 1.0);
    -webkit-backdrop-filter: blur(20px);
    backdrop-filter: blur(20px);
}

@keyframes modalSlideUp {
    from {
        opacity: 0;
        transform: translateY(20px) scale(0.95);
    }

    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

.modal-content h3 {
    font-size: 1.15rem;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
    letter-spacing: -0.01em;
}

.modal-desc {
    font-size: 0.82rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-lg);
}

.confirm-items {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-xl);
}

.confirm-item {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    padding: var(--spacing-lg);
    background: rgba(255, 255, 255, 0.05);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
    transition: border-color var(--transition-fast);
    -webkit-backdrop-filter: blur(10px);
    backdrop-filter: blur(10px);
}

.confirm-item:focus-within {
    border-color: var(--accent-primary);
}

.confirm-item label {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--text-tertiary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.confirm-value {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 1rem;
    color: var(--text-primary);
}

.confirm-input {
    width: 50px;
    padding: 8px 10px;
    font-size: 1rem;
    font-weight: 600;
    color: var(--accent-primary);
    background: rgba(255, 255, 255, 0.05);
    border: 2px solid var(--accent-primary);
    border-radius: var(--radius-md);
    text-align: center;
    outline: none;
    transition: all var(--transition-fast);
    -webkit-backdrop-filter: blur(10px);
    backdrop-filter: blur(10px);
}

.confirm-input:focus {
    box-shadow: 0 0 0 3px var(--accent-glow);
}

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

.confirm-input[type=number] {
    -moz-appearance: textfield;
    appearance: textfield;
}

.confirm-source {
    font-size: 0.7rem;
    color: var(--text-tertiary);
    font-style: italic;
}

.modal-actions {
    display: flex;
    gap: var(--spacing-sm);
    justify-content: flex-end;
}

.modal-btn {
    padding: 12px var(--spacing-lg);
    font-size: 0.85rem;
    font-weight: 500;
    border: none;
    border-radius: var(--radius-full);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.modal-btn.secondary {
    background: rgba(255, 255, 255, 0.1);
    color: var(--text-secondary);
}

.modal-btn.secondary:hover {
    background: rgba(255, 255, 255, 0.2);
    color: var(--text-primary);
}

.modal-btn.primary {
    background: var(--accent-primary);
    color: white;
    box-shadow: 0 2px 8px rgba(var(--accent-rgb), 0.3);
}

.modal-btn.primary:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(var(--accent-rgb), 0.4);
}

.modal-btn.primary:active {
    transform: translateY(0);
}

.dialog-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.4);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 2000;
    animation: dialogFadeIn 0.15s ease;
}

.dialog-overlay.active {
    display: flex;
}

@keyframes dialogFadeIn {
    from {
        opacity: 0;
    }

    to {
        opacity: 1;
    }
}

.dialog-box {
    background: rgba(30, 30, 30, 0.8);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-xl);
    width: 100%;
    max-width: 440px;
    box-shadow: var(--shadow-xl);
    animation: dialogSlideIn 0.25s cubic-bezier(0.25, 0.1, 0.25, 1.0);
    overflow: hidden;
    -webkit-backdrop-filter: blur(20px);
    backdrop-filter: blur(20px);
}

@keyframes dialogSlideIn {
    from {
        opacity: 0;
        transform: translateY(16px) scale(0.95);
    }

    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

.dialog-header {
    padding: var(--spacing-lg) var(--spacing-lg) 0;
}

.dialog-title {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-primary);
    letter-spacing: -0.01em;
}

.dialog-body {
    padding: var(--spacing-md) var(--spacing-lg);
    font-size: 0.88rem;
    color: var(--text-secondary);
    line-height: 1.7;
}

.dialog-input-wrap {
    display: none;
    padding: 0 var(--spacing-lg) var(--spacing-md);
}

.dialog-input-wrap.visible {
    display: block;
}

.dialog-input {
    width: 100%;
    padding: var(--spacing-md) var(--spacing-md);
    font-size: 0.85rem;
    font-family: inherit;
    color: var(--text-primary);
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    outline: none;
    resize: vertical;
    line-height: 1.6;
    transition: all var(--transition-fast);
    -webkit-backdrop-filter: blur(10px);
    backdrop-filter: blur(10px);
}

.dialog-input:focus {
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 3px var(--accent-glow);
}

.dialog-input::placeholder {
    color: var(--text-placeholder);
}

.dialog-footer {
    display: flex;
    gap: var(--spacing-sm);
    padding: var(--spacing-lg) var(--spacing-lg) var(--spacing-lg);
    justify-content: flex-end;
}

.dialog-btn {
    padding: 10px 20px;
    font-size: 0.85rem;
    font-weight: 500;
    font-family: inherit;
    border: none;
    border-radius: var(--radius-full);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.dialog-btn.cancel {
    background: rgba(255, 255, 255, 0.1);
    color: var(--text-secondary);
}

.dialog-btn.cancel:hover {
    background: rgba(255, 255, 255, 0.2);
    color: var(--text-primary);
}

.dialog-btn.confirm {
    background: var(--accent-primary);
    color: white;
    box-shadow: 0 2px 8px rgba(var(--accent-rgb), 0.3);
}

.dialog-btn.confirm:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(var(--accent-rgb), 0.4);
}

.dialog-btn.confirm:active {
    transform: translateY(0);
}

.dialog-btn.confirm.danger {
    background: var(--error);
    box-shadow: 0 2px 8px rgba(255, 59, 48, 0.3);
}

.dialog-btn.confirm.danger:hover {
    box-shadow: 0 4px 12px rgba(255, 59, 48, 0.4);
}

[data-theme="light"] .dialog-box {
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    box-shadow: 0 25px 60px rgba(0, 0, 0, 0.15);
}

[data-theme="light"] .dialog-input {
    background: rgba(0, 0, 0, 0.05);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

[data-theme="light"] .student-tag {
    color: var(--text-primary);
    background: rgba(0, 0, 0, 0.05);
    border-color: rgba(0, 0, 0, 0.1);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

[data-theme="light"] .student-tag.online {
    border-color: var(--success);
    color: var(--success);
}

[data-theme="light"] .student-tag.offline {
    border-color: var(--error);
    color: var(--error);
}

[data-theme="light"] .student-tag:hover {
    background-color: rgba(0, 0, 0, 0.1);
}

[data-theme="light"] .student-tag.active {
    background: rgba(99, 102, 241, 0.1);
    border-color: #6366f1;
    color: #4f46e5;
}

body {
    opacity: 0;
    transition: opacity 0.25s ease;
}

body.page-ready {
    opacity: 1;
}