/* CSS Variables */
:root {
    --primary: #6366F1;
    --primary-hover: #4F46E5;
    --bg-dark: #0F172A;
    --bg-card: #1E293B;
    --bg-hover: #334155;
    --text-primary: #F8FAFC;
    --text-secondary: #94A3B8;
    --text-muted: #64748B;
    --success: #22C55E;
    --warning: #F59E0B;
    --error: #EF4444;
    --border: #334155;
    --radius: 12px;
    --radius-sm: 8px;
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.3);
}

/* Reset */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

/* Body */
body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--bg-dark);
    color: var(--text-primary);
    line-height: 1.6;
}

/* App Layout */
.app {
    display: flex;
    min-height: 100vh;
}

/* Quick Reading Entry Card */
.quick-reading-card {
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: linear-gradient(135deg, var(--primary) 0%, #8B5CF6 100%);
    border-radius: var(--radius);
    padding: 24px 32px;
    margin-bottom: 24px;
    box-shadow: 0 4px 14px rgba(99, 102, 241, 0.3);
}

.quick-reading-info h3 {
    color: white;
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 4px;
}

.quick-reading-info p {
    color: rgba(255, 255, 255, 0.8);
    font-size: 14px;
}

.btn-large {
    padding: 12px 24px;
    font-size: 16px;
    background: white;
    color: var(--primary);
    font-weight: 600;
}

.btn-large:hover {
    background: rgba(255, 255, 255, 0.9);
    transform: translateY(-1px);
}

/* Sidebar */
.sidebar {
    width: 240px;
    background: var(--bg-card);
    border-right: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    position: fixed;
    height: 100vh;
}

.sidebar-header {
    padding: 24px;
    border-bottom: 1px solid var(--border);
}

.logo {
    font-size: 20px;
    font-weight: 700;
    color: var(--text-primary);
}

.sidebar-nav {
    flex: 1;
    padding: 16px 12px;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    color: var(--text-secondary);
    text-decoration: none;
    border-radius: var(--radius-sm);
    transition: all 0.2s;
    margin-bottom: 4px;
}

.nav-item:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
}

.nav-item.active {
    background: var(--primary);
    color: white;
}

.nav-icon {
    font-size: 18px;
}

.sidebar-footer {
    padding: 16px 24px;
    border-top: 1px solid var(--border);
}

/* 生成中指示器 */
.generation-indicator {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 12px;
    background: rgba(99, 102, 241, 0.1);
    border-radius: var(--radius-sm);
    margin-bottom: 12px;
}

.generation-indicator .generating-icon {
    animation: spin 1s linear infinite;
}

.generation-indicator .generating-text {
    font-size: 12px;
    color: var(--primary);
}

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

/* 队列badge */
.queue-badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 18px;
    height: 18px;
    padding: 0 5px;
    font-size: 11px;
    font-weight: 600;
    background: var(--primary);
    color: white;
    border-radius: 9px;
    margin-left: 8px;
}

.api-status {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
}

.status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--warning);
}

.status-dot.ok { background: var(--success); }
.status-dot.error { background: var(--error); }

/* Main Content */
.main-content {
    flex: 1;
    margin-left: 240px;
    padding: 32px;
}

/* Pages */
.page {
    display: none;
}

.page.active {
    display: block;
}

.page-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 32px;
}

.page-header h2 {
    font-size: 28px;
    font-weight: 700;
}

.subtitle {
    color: var(--text-secondary);
    margin-top: 4px;
    font-size: 14px;
}

/* Stats Cards */
.stats-cards {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    margin-bottom: 32px;
}

.stat-card {
    background: var(--bg-card);
    border-radius: var(--radius);
    padding: 24px;
    display: flex;
    align-items: center;
    gap: 16px;
    border: 1px solid var(--border);
}

.stat-card.highlight {
    background: linear-gradient(135deg, var(--primary), #818CF8);
    border: none;
}

.stat-icon {
    font-size: 32px;
}

.stat-info {
    display: flex;
    flex-direction: column;
}

.stat-value {
    font-size: 32px;
    font-weight: 700;
    font-family: 'JetBrains Mono', monospace;
}

.stat-label {
    font-size: 13px;
    color: var(--text-secondary);
}

.stat-card.highlight .stat-label {
    color: rgba(255, 255, 255, 0.8);
}

/* Quick Actions */
.quick-actions {
    background: var(--bg-card);
    border-radius: var(--radius);
    padding: 24px;
    margin-bottom: 32px;
    border: 1px solid var(--border);
}

.quick-actions h3 {
    margin-bottom: 16px;
    font-size: 16px;
    font-weight: 600;
}

.action-buttons {
    display: flex;
    gap: 12px;
}

/* Buttons */
.btn {
    padding: 10px 20px;
    border: none;
    border-radius: var(--radius-sm);
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
}

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

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

.btn-secondary {
    background: var(--bg-hover);
    color: var(--text-primary);
}

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

.btn-icon {
    background: var(--bg-hover);
    color: var(--text-primary);
    padding: 10px;
}

/* Task List */
.recent-section, .task-queue {
    background: var(--bg-card);
    border-radius: var(--radius);
    padding: 24px;
    border: 1px solid var(--border);
}

.recent-section h3, .task-queue h3 {
    margin-bottom: 16px;
    font-size: 16px;
    font-weight: 600;
}

.task-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.task-item {
    background: var(--bg-dark);
    border-radius: var(--radius-sm);
    padding: 16px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border: 1px solid var(--border);
}

.task-info h4 {
    font-size: 14px;
    font-weight: 500;
    margin-bottom: 4px;
}

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

.task-status {
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 500;
}

.task-status.pending { background: rgba(245, 158, 11, 0.2); color: var(--warning); }
.task-status.running { background: rgba(99, 102, 241, 0.2); color: var(--primary); }
.task-status.completed { background: rgba(34, 197, 94, 0.2); color: var(--success); }
.task-status.failed { background: rgba(239, 68, 68, 0.2); color: var(--error); }

/* Filters */
.task-filters {
    display: flex;
    gap: 8px;
    margin-bottom: 16px;
}

.filter-btn {
    padding: 6px 16px;
    background: var(--bg-dark);
    border: 1px solid var(--border);
    border-radius: 20px;
    font-size: 13px;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all 0.2s;
}

.filter-btn:hover, .filter-btn.active {
    background: var(--primary);
    color: white;
    border-color: var(--primary);
}

/* Material Grid */
.material-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 20px;
}

.material-card {
    background: var(--bg-card);
    border-radius: var(--radius);
    overflow: hidden;
    border: 1px solid var(--border);
    transition: transform 0.2s;
}

.material-card:hover {
    transform: translateY(-4px);
}

.material-preview {
    height: 150px;
    background: var(--bg-dark);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 48px;
}

.material-info {
    padding: 16px;
}

.material-info h4 {
    font-size: 14px;
    font-weight: 500;
    margin-bottom: 4px;
    word-break: break-all;
}

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

.material-type {
    display: inline-block;
    padding: 2px 8px;
    background: var(--bg-hover);
    border-radius: 4px;
    font-size: 11px;
    margin-right: 8px;
}

/* Charts */
.charts-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
}

.chart-card {
    background: var(--bg-card);
    border-radius: var(--radius);
    padding: 24px;
    border: 1px solid var(--border);
}

.chart-card.wide {
    grid-column: span 2;
}

.chart-card h3 {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 16px;
}

.chart-card canvas {
    max-height: 300px;
}

/* Task Stats */
.task-stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}

.task-stat {
    background: var(--bg-dark);
    border-radius: var(--radius-sm);
    padding: 20px;
    text-align: center;
}

.task-stat-value {
    display: block;
    font-size: 36px;
    font-weight: 700;
    font-family: 'JetBrains Mono', monospace;
    color: var(--primary);
}

.task-stat-label {
    font-size: 13px;
    color: var(--text-muted);
}

/* Settings */
.settings-sections {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.settings-card {
    background: var(--bg-card);
    border-radius: var(--radius);
    padding: 24px;
    border: 1px solid var(--border);
    max-width: 600px;
}

.settings-card h3 {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 20px;
}

.form-group {
    margin-bottom: 16px;
}

.form-group label {
    display: block;
    font-size: 14px;
    color: var(--text-secondary);
    margin-bottom: 8px;
}

.form-group input[type="text"],
.form-group input[type="password"],
.form-group input[type="number"],
.form-group select {
    width: 100%;
    padding: 10px 16px;
    background: var(--bg-dark);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-size: 14px;
    box-sizing: border-box;
}

.form-group select option {
    background: var(--bg-dark);
    color: var(--text-primary);
    padding: 8px;
}

.form-group input[type="checkbox"] {
    margin-right: 8px;
}

/* Search Box */
.search-box {
    display: flex;
    gap: 8px;
}

.search-box input {
    padding: 10px 16px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-size: 14px;
    width: 300px;
}

/* Filters */
.filters {
    display: flex;
    gap: 12px;
    margin-bottom: 24px;
}

.filters select {
    padding: 10px 16px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-size: 14px;
}

/* Date Range */
.date-range {
    display: flex;
    align-items: center;
    gap: 12px;
}

.date-range input {
    padding: 10px 16px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-size: 14px;
}

/* Empty State */
.empty-state {
    text-align: center;
    padding: 48px;
    color: var(--text-muted);
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
    z-index: 1000;
    align-items: center;
    justify-content: center;
}

.modal.active {
    display: flex;
}

.modal-content {
    background: var(--bg-card);
    border-radius: var(--radius);
    width: 90%;
    max-width: 600px;
    max-height: 80vh;
    overflow: auto;
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 24px;
    border-bottom: 1px solid var(--border);
}

.modal-header h3 {
    font-size: 18px;
    font-weight: 600;
}

.modal-close {
    background: none;
    border: none;
    color: var(--text-muted);
    font-size: 24px;
    cursor: pointer;
}

.modal-body {
    padding: 24px;
}

/* Toast */
.toast {
    display: none;
    position: fixed;
    bottom: 24px;
    right: 24px;
    padding: 12px 24px;
    background: var(--bg-card);
    border-radius: var(--radius-sm);
    border: 1px solid var(--border);
    box-shadow: var(--shadow);
    z-index: 1001;
}

.toast.active {
    display: block;
}

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

/* Pagination */
.pagination {
    display: flex;
    justify-content: center;
    gap: 8px;
    margin-top: 24px;
}

.pagination button {
    padding: 8px 16px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    cursor: pointer;
}

.pagination button:hover, .pagination button.active {
    background: var(--primary);
    color: white;
    border-color: var(--primary);
}

/* Token Status */
.token-status {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.token-info {
    display: flex;
    justify-content: space-between;
}

.token-label {
    color: var(--text-muted);
}

.token-value {
    font-family: 'JetBrains Mono', monospace;
}

/* Form textarea */
.form-group textarea {
    width: 100%;
    padding: 10px 16px;
    background: var(--bg-dark);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-size: 14px;
    min-height: 100px;
    resize: vertical;
}

/* Input area for words */
.words-input {
    width: 100%;
    min-height: 150px;
    padding: 12px;
    background: var(--bg-dark);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-size: 14px;
    resize: vertical;
}

/* Responsive */
@media (max-width: 1024px) {
    .stats-cards {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .charts-grid {
        grid-template-columns: 1fr;
    }
    
    .chart-card.wide {
        grid-column: span 1;
    }
}

@media (max-width: 768px) {
    .sidebar {
        width: 60px;
    }
    
    .sidebar-header, .sidebar-footer, .nav-item span {
        display: none;
    }
    
    .main-content {
        margin-left: 60px;
    }
    
    .stats-cards {
        grid-template-columns: 1fr;
    }
}

/* HP Learning Progress */
.hp-book-progress {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.hp-book-item {
    padding: 16px;
    background: var(--bg);
    border-radius: var(--radius-sm);
}

.hp-book-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 8px;
}

.hp-book-name {
    font-weight: 500;
    color: var(--text-primary);
}

.hp-book-stats {
    font-size: 12px;
    color: var(--text-muted);
}

.hp-progress-bar {
    height: 8px;
    background: var(--bg-dark);
    border-radius: 4px;
    overflow: hidden;
}

.hp-progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--primary), var(--success));
    border-radius: 4px;
    transition: width 0.3s ease;
}

.hp-book-percent {
    font-size: 12px;
    color: var(--text-secondary);
    text-align: right;
    margin-top: 4px;
}