/**
 * Interactive Tokenization Visualizer - Styles
 * Uses CSS variables from ../shared/css/demo-styles.css for theming
 */

/* Demo-specific variables that don't conflict with theming */
:root {
    --token-shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --token-shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --token-shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --token-transition: all 0.3s ease;
    --primary-hover: #005a34;
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 20px;
}

/* Hero Header - matches ELIZA demo styling */
.hero-header {
    padding: 3rem 0 2rem;
    margin-bottom: 30px;
    text-align: center;
    background: linear-gradient(180deg, var(--surface-color) 0%, var(--bg-color) 100%);
}

.hero-title {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 800;
    margin-bottom: 1rem;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-subtitle {
    font-size: clamp(1rem, 2vw, 1.25rem);
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

/* Tabs - matches ELIZA demo styling */
.tabs {
    display: flex;
    gap: 10px;
    margin-bottom: 20px;
    border-bottom: 2px solid var(--border-color);
    background: var(--surface-color);
    padding: 10px 20px 0;
    border-radius: 8px 8px 0 0;
    box-shadow: var(--token-shadow-md);
    flex-wrap: wrap;
}

.tab-button {
    padding: 12px 24px;
    background: transparent;
    border: none;
    border-bottom: 3px solid transparent;
    color: var(--text-secondary);
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--token-transition);
}

.tab-button:hover {
    color: var(--primary-color);
    background: var(--surface-hover);
}

.tab-button.active {
    color: var(--primary-color);
    border-bottom-color: var(--primary-color);
}

.tab-content {
    display: none;
    background: var(--surface-color);
    padding: 30px;
    border-radius: 0 0 8px 8px;
    box-shadow: var(--token-shadow-md);
    min-height: 600px;
}

.tab-content.active {
    display: block;
    animation: fadeIn 0.3s ease-in;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Input Section - matches ELIZA demo styling */
.input-section {
    background: var(--bg-secondary);
    padding: 20px;
    border-radius: var(--radius-md);
    margin-bottom: 20px;
}

.input-section label {
    display: block;
    font-weight: 600;
    margin-bottom: 10px;
    color: var(--text-primary);
}

.input-section textarea,
.input-section input[type="text"] {
    width: 100%;
    padding: 12px 18px;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    font-size: 1rem;
    font-family: inherit;
    transition: var(--token-transition);
    resize: vertical;
    background: var(--surface-color);
    color: var(--text-primary);
    outline: none;
}

.input-section textarea:focus,
.input-section input[type="text"]:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.2);
}

.controls {
    display: flex;
    gap: 10px;
    margin-top: 15px;
    align-items: center;
    flex-wrap: wrap;
}

/* Buttons - matches ELIZA demo styling */
.primary-btn,
.secondary-btn {
    padding: 12px 24px;
    border: none;
    border-radius: 24px;
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--token-transition);
}

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

.primary-btn:hover:not(:disabled) {
    background: var(--primary-hover);
    transform: translateY(-2px);
    box-shadow: var(--token-shadow-md);
}

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

.secondary-btn:hover:not(:disabled) {
    opacity: 0.9;
}

button:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.example-btn {
    padding: 8px 16px !important;
    font-size: 0.9rem !important;
    border-radius: 20px !important;
}

/* Mode Toggle Buttons */
.mode-btn {
    transition: all 0.3s ease;
}

.mode-btn:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: var(--token-shadow-md);
}

.mode-btn.active {
    border-color: var(--primary-color) !important;
    background: var(--primary-color) !important;
    color: white !important;
}

.mode-btn:not(.active) {
    border-color: var(--border-color) !important;
    background: var(--surface-color) !important;
    color: var(--text-primary) !important;
}

.mode-btn:not(.active):hover:not(:disabled) {
    background: var(--surface-hover) !important;
    border-color: var(--primary-color) !important;
}

/* Model Loading Status */
.model-loading-status {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 60px 20px;
    background: var(--bg-secondary);
    border-radius: 12px;
    margin-bottom: 20px;
    text-align: center;
}

.model-loading-status.error {
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid #ef4444;
}

.model-loading-status.error .loading-spinner {
    display: none;
}

.model-loading-status.error .loading-text {
    color: #ef4444;
}

.loading-spinner {
    width: 50px;
    height: 50px;
    border: 4px solid var(--border-color);
    border-top-color: var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-bottom: 20px;
}

.loading-text {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 10px;
}

.loading-progress {
    font-size: 0.95rem;
    color: var(--text-secondary);
}

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

/* Tokenizer Grid */
.tokenizer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
}

.tokenizer-card {
    background: var(--surface-color);
    border-radius: var(--radius-lg);
    padding: 20px;
    box-shadow: var(--token-shadow-md);
    transition: transform 0.3s, box-shadow 0.3s;
}

.tokenizer-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--token-shadow-lg);
}

.tokenizer-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 15px;
    padding-bottom: 15px;
    border-bottom: 2px solid var(--border-color);
}

.tokenizer-header h3 {
    font-size: 1.3rem;
    color: var(--text-primary);
}

.model-tag {
    padding: 4px 12px;
    background: var(--primary-color);
    color: white;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
}

.tokenizer-info {
    display: flex;
    gap: 15px;
    margin-bottom: 15px;
    flex-wrap: wrap;
}

.info-item {
    font-size: 0.9rem;
    color: var(--text-secondary);
    font-weight: 500;
}

/* Token Output */
.token-output {
    min-height: 100px;
    padding: 15px;
    background: var(--bg-secondary);
    border-radius: var(--radius-md);
    line-height: 2;
    word-wrap: break-word;
    margin-bottom: 15px;
    font-family: 'Consolas', 'Monaco', 'Courier New', monospace;
}

.token {
    display: inline-block;
    padding: 4px 8px;
    margin: 2px;
    border-radius: var(--radius-sm);
    font-size: 0.9rem;
    transition: all 0.3s;
    cursor: pointer;
    animation: tokenAppear 0.3s;
}

@keyframes tokenAppear {
    from {
        opacity: 0;
        transform: scale(0.8);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

.token:hover {
    transform: scale(1.05);
    box-shadow: var(--token-shadow-md);
}

/* Token colors with dark mode support */
.token-0 { background: #fbbf24; border: 1px solid #f59e0b; color: #1f2937; }
.token-1 { background: #60a5fa; border: 1px solid #3b82f6; color: #1f2937; }
.token-2 { background: #f472b6; border: 1px solid #ec4899; color: #1f2937; }
.token-3 { background: #4ade80; border: 1px solid #22c55e; color: #1f2937; }
.token-4 { background: #818cf8; border: 1px solid #6366f1; color: #1f2937; }
.token-5 { background: #fb923c; border: 1px solid #f97316; color: #1f2937; }
.token-6 { background: #c084fc; border: 1px solid #a855f7; color: #1f2937; }
.token-7 { background: #2dd4bf; border: 1px solid #14b8a6; color: #1f2937; }

[data-theme="light"] .token-0 { background: #fef3c7; border: 1px solid #fbbf24; color: #1f2937; }
[data-theme="light"] .token-1 { background: #dbeafe; border: 1px solid #60a5fa; color: #1f2937; }
[data-theme="light"] .token-2 { background: #fce7f3; border: 1px solid #f472b6; color: #1f2937; }
[data-theme="light"] .token-3 { background: #dcfce7; border: 1px solid #4ade80; color: #1f2937; }
[data-theme="light"] .token-4 { background: #e0e7ff; border: 1px solid #818cf8; color: #1f2937; }
[data-theme="light"] .token-5 { background: #fed7aa; border: 1px solid #fb923c; color: #1f2937; }
[data-theme="light"] .token-6 { background: #e9d5ff; border: 1px solid #c084fc; color: #1f2937; }
[data-theme="light"] .token-7 { background: #ccfbf1; border: 1px solid #2dd4bf; color: #1f2937; }

/* Token IDs */
.token-ids {
    margin-top: 10px;
}

.token-ids details {
    cursor: pointer;
}

.token-ids summary {
    padding: 8px;
    background: var(--bg-secondary);
    border-radius: var(--radius-sm);
    font-weight: 500;
    user-select: none;
    color: var(--text-primary);
}

.token-ids summary:hover {
    background: var(--surface-hover);
}

.ids-content {
    margin-top: 10px;
    padding: 10px;
    background: var(--bg-secondary);
    border-radius: var(--radius-sm);
    font-family: 'Consolas', 'Monaco', 'Courier New', monospace;
    font-size: 0.9rem;
    max-height: 150px;
    overflow-y: auto;
    color: var(--text-primary);
}

/* Stats Section */
.stats-section {
    background: var(--surface-color);
    padding: 30px;
    border-radius: var(--radius-lg);
    box-shadow: var(--token-shadow-md);
}

.stats-section h3 {
    margin-bottom: 20px;
    color: var(--text-primary);
}

.chart-container {
    margin-top: 20px;
}

#comparison-chart {
    max-width: 100%;
    height: auto;
}

/* BPE Visualizer */
.bpe-container {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 20px;
    margin-bottom: 30px;
}

@media (max-width: 968px) {
    .bpe-container {
        grid-template-columns: 1fr;
    }
}

.bpe-explanation,
.bpe-visualization {
    background: var(--surface-color);
    padding: 25px;
    border-radius: var(--radius-lg);
    box-shadow: var(--token-shadow-md);
}

.bpe-explanation h3,
.bpe-visualization h3 {
    margin-bottom: 15px;
    color: var(--text-primary);
}

.step-info {
    padding: 15px;
    background: var(--bg-color);
    border-radius: var(--radius-md);
    margin-bottom: 20px;
    min-height: 100px;
}

.step-info p {
    margin-bottom: 10px;
}

.step-info .highlight {
    background: var(--primary-color);
    color: white;
    padding: 2px 6px;
    border-radius: var(--radius-sm);
    font-weight: 600;
}

.merge-history {
    margin-top: 20px;
}

.merge-history h4 {
    margin-bottom: 10px;
    color: var(--text-secondary);
}

#merge-list {
    list-style: none;
    max-height: 300px;
    overflow-y: auto;
}

#merge-list li {
    padding: 8px 12px;
    margin-bottom: 5px;
    background: var(--bg-color);
    border-radius: var(--radius-sm);
    border-left: 3px solid var(--primary-color);
    font-family: 'Consolas', 'Monaco', 'Courier New', monospace;
    font-size: 0.9rem;
    animation: slideIn 0.3s;
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateX(-10px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.current-state {
    padding: 20px;
    background: var(--bg-color);
    border-radius: var(--radius-md);
    min-height: 200px;
    margin-bottom: 20px;
    font-family: 'Consolas', 'Monaco', 'Courier New', monospace;
}

.current-state .placeholder {
    text-align: center;
    color: var(--text-secondary);
    padding: 40px;
}

.bpe-token {
    display: inline-block;
    padding: 6px 10px;
    margin: 4px;
    background: var(--primary-color);
    border: 2px solid var(--primary-color);
    border-radius: var(--radius-sm);
    font-weight: 500;
    transition: all 0.3s;
    color: white;
}

.bpe-token.merged {
    animation: merge 0.5s;
    background: #22c55e;
    border-color: #16a34a;
    color: white;
}

@keyframes merge {
    0% { transform: scale(1); }
    50% { transform: scale(1.2); background: #fef3c7; }
    100% { transform: scale(1); }
}

.bpe-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 10px;
}

.stat-box {
    padding: 15px;
    background: var(--bg-color);
    border-radius: var(--radius-md);
    text-align: center;
}

.stat-label {
    display: block;
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-bottom: 5px;
}

.stat-value {
    display: block;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
}

/* BPE Tree */
.bpe-tree-section {
    background: var(--card-bg);
    padding: 30px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    margin-bottom: 30px;
}

.bpe-tree-section h3 {
    margin-bottom: 20px;
}

.tree-container {
    padding: 20px;
    background: var(--bg-color);
    border-radius: var(--radius-md);
    overflow-x: auto;
    min-height: 200px;
}

.tree-node {
    display: inline-block;
    padding: 8px 12px;
    margin: 5px;
    background: var(--surface-color);
    border: 2px solid var(--primary-color);
    border-radius: var(--radius-sm);
    font-family: 'Consolas', 'Monaco', 'Courier New', monospace;
    box-shadow: var(--token-shadow-sm);
    color: var(--text-primary);
}

.tree-level {
    margin-bottom: 20px;
    text-align: center;
}

/* Vocabulary Browser */
.vocab-controls {
    background: var(--card-bg);
    padding: 25px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    margin-bottom: 20px;
    display: grid;
    grid-template-columns: auto 1fr;
    gap: 15px;
    align-items: center;
}

.vocab-controls label {
    font-weight: 600;
    color: var(--text-primary);
}

.vocab-controls select,
.vocab-controls input {
    padding: 10px;
    border: 2px solid var(--border-color);
    border-radius: var(--radius-md);
    font-size: 1rem;
}

.vocab-controls select:focus,
.vocab-controls input:focus {
    outline: none;
    border-color: var(--primary-color);
}

.example-select {
    padding: 8px 12px;
    border: 2px solid var(--border-color);
    border-radius: var(--radius-md);
    font-size: 0.95rem;
    background: var(--surface-color);
    color: var(--text-primary);
    cursor: pointer;
    min-width: 180px;
}

.example-select:focus {
    outline: none;
    border-color: var(--primary-color);
}

.example-select:hover {
    border-color: var(--primary-color);
}

.vocab-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
}

.stat-card {
    background: var(--card-bg);
    padding: 25px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    text-align: center;
}

.stat-card h4 {
    color: var(--text-secondary);
    margin-bottom: 10px;
    font-weight: 500;
}

.big-number {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary-color);
}

/* Vocabulary Table */
.vocab-table-container {
    background: var(--card-bg);
    padding: 20px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    overflow-x: auto;
}

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

.vocab-table thead {
    background: var(--primary-color);
    color: white;
}

.vocab-table th {
    padding: 15px;
    text-align: left;
    font-weight: 600;
    cursor: pointer;
    user-select: none;
    transition: background 0.2s ease;
}

.vocab-table th:hover {
    background: rgba(99, 102, 241, 0.3);
}

.vocab-table td {
    padding: 12px 15px;
    border-bottom: 1px solid var(--border-color);
}

.vocab-table tbody tr:hover {
    background: var(--bg-color);
}

.vocab-table .loading {
    text-align: center;
    padding: 40px;
    color: var(--text-secondary);
}

.token-display {
    font-family: 'Consolas', 'Monaco', 'Courier New', monospace;
    background: var(--bg-color);
    padding: 4px 8px;
    border-radius: var(--radius-sm);
}

.token-type {
    display: inline-block;
    padding: 3px 8px;
    border-radius: 12px;
    font-size: 0.8rem;
    font-weight: 600;
}

.token-type.special {
    background: #fee2e2;
    color: #dc2626;
}

.token-type.word {
    background: #dbeafe;
    color: #2563eb;
}

.token-type.subword {
    background: #fef3c7;
    color: #d97706;
}

/* Pagination */
.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 15px;
    margin-top: 20px;
}

#vocab-page-info {
    font-weight: 500;
    color: var(--text-secondary);
}

/* Responsive Design */
@media (max-width: 768px) {
    header h1 {
        font-size: 2rem;
    }

    .subtitle {
        font-size: 1rem;
    }

    .tokenizer-grid {
        grid-template-columns: 1fr;
    }

    .bpe-stats {
        grid-template-columns: 1fr;
    }

    .vocab-controls {
        grid-template-columns: 1fr;
    }

    .controls {
        flex-direction: column;
        align-items: stretch;
    }

    .controls button {
        width: 100%;
    }
}

/* Scrollbar Styling */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-color);
}

::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 4px;
}

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