/* ============================================================================
   TABLE OF CONTENTS
   ============================================================================
   1. CSS Variables & Themes .................... line ~15
   2. Base Styles & Typography .................. line ~85
   3. Layout (Header, Container) ................ line ~110
   4. Controls & Form Elements .................. line ~150
   5. Radio & Checkbox Groups ................... line ~205
   6. Quick Filters ............................. line ~260
   7. Stats Panel ............................... line ~315
   8. Target Info Panel ......................... line ~405
   9. Section & Details/Summary ................. line ~465
   10. Filter Grid & Groups ..................... line ~515
   11. Buttons .................................. line ~570
   12. Table Styles ............................. line ~615
   13. Status & Relative Cost Classes ........... line ~680
   14. Badges ................................... line ~710
   15. Combined Cell ............................ line ~735
   16. Grouped Table Rows ....................... line ~760
   17. Expandable Rows .......................... line ~820
   18. Pagination ............................... line ~885
   19. Loading & Error States ................... line ~935
   20. Footer ................................... line ~955
   21. Utility Classes .......................... line ~990
   22. Responsive Breakpoints ................... line ~1000
   ============================================================================ */

/* ============================================================================
   1. CSS Variables & Themes
   ============================================================================ */

:root {
    --font-heading: 'Space Grotesk', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-body: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    transition: background 0.2s ease, color 0.2s ease;
}

[data-theme="light"] {
    color-scheme: light;

    /* Background colors */
    --bg-primary: #ffffff;
    --bg-secondary: #f8fafc;
    --bg-card: #f1f5f9;
    --input-bg: #ffffff;

    /* Text colors */
    --text-primary: #1e293b;
    --text-secondary: #64748b;
    --text-muted: #94a3b8;

    /* Accent colors */
    --accent: #6366f1;
    --accent-hover: #4f46e5;
    --accent-secondary: #0ea5e9;

    /* Status colors */
    --success: #10b981;
    --warning: #f59e0b;
    --error: #ef4444;

    /* Borders and shadows */
    --border: #e2e8f0;
    --border-strong: #cbd5e1;
    --shadow: 0 1px 3px rgba(0, 0, 0, 0.08);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);

    /* Special backgrounds */
    --info-panel-bg: linear-gradient(135deg, #f8fafc 0%, #f1f5f9 100%);
    --header-bg: #ffffff;
}

[data-theme="dark"] {
    color-scheme: dark;

    /* Background colors */
    --bg-primary: #0f172a;
    --bg-secondary: #1e293b;
    --bg-card: #334155;
    --input-bg: #1e293b;

    /* Text colors */
    --text-primary: #f1f5f9;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;

    /* Accent colors */
    --accent: #818cf8;
    --accent-hover: #a5b4fc;
    --accent-secondary: #38bdf8;

    /* Status colors */
    --success: #34d399;
    --warning: #fbbf24;
    --error: #f87171;

    /* Borders and shadows */
    --border: #334155;
    --border-strong: #475569;
    --shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.4);

    /* Special backgrounds */
    --info-panel-bg: linear-gradient(135deg, #1e293b 0%, #334155 100%);
    --header-bg: #1e293b;
}

/* ============================================================================
   Base Styles
   ============================================================================ */

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

body {
    font-family: var(--font-body);
    background: var(--bg-secondary);
    color: var(--text-primary);
    line-height: 1.6;
    font-size: 14px;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 600;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 16px;
}

/* ============================================================================
   Header
   ============================================================================ */

header {
    background: var(--header-bg);
    padding: 24px 0;
    border-bottom: 1px solid var(--border);
}

.header-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 16px;
    flex-wrap: wrap;
}

.header-text h1 {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 4px;
    letter-spacing: -0.025em;
}

.header-text p {
    color: var(--text-secondary);
    font-size: 0.875rem;
}

/* ============================================================================
   Main Content
   ============================================================================ */

main.container {
    padding-top: 24px;
    padding-bottom: 24px;
}

/* ============================================================================
   Controls Section
   ============================================================================ */

.controls {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 16px;
    margin-bottom: 20px;
    background: var(--bg-primary);
    padding: 16px;
    border-radius: 8px;
    border: 1px solid var(--border);
}

.control-group {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.control-group label {
    font-weight: 500;
    color: var(--text-secondary);
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    display: flex;
    align-items: center;
    gap: 6px;
}

select,
input[type="text"],
input[type="number"] {
    padding: 8px 12px;
    border: 1px solid var(--border);
    border-radius: 6px;
    background: var(--input-bg);
    color: var(--text-primary);
    font-size: 0.875rem;
    font-family: var(--font-body);
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

select:focus,
input:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

/* ============================================================================
   Radio & Checkbox Groups
   ============================================================================ */

.radio-group {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
    align-items: center;
}

.radio-item {
    display: flex;
    align-items: center;
    gap: 6px;
    cursor: pointer;
    font-size: 0.875rem;
    color: var(--text-primary);
}

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

.radio-item.disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.radio-item.disabled input[type="radio"] {
    cursor: not-allowed;
}

/* Marginal info badge */
.marginal-badge {
    display: inline-block;
    background: var(--accent);
    color: white;
    padding: 4px 10px;
    border-radius: 4px;
    font-size: 0.75rem;
    font-weight: 500;
    margin-top: 8px;
}

#marginal-info {
    margin-top: 4px;
}

/* Value mode section (before results table) */
.value-mode-section {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 16px;
    padding: 12px 16px;
    background: var(--bg-secondary);
    border-radius: 8px;
    flex-wrap: wrap;
}

.value-mode-section > label {
    font-weight: 500;
    color: var(--text-secondary);
}

.value-mode-section .radio-group {
    gap: 16px;
}

.value-mode-section #marginal-info {
    margin-top: 0;
    margin-left: auto;
}

.checkbox-group {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.checkbox-item {
    display: flex;
    align-items: center;
    gap: 8px;
    background: var(--bg-primary);
    padding: 8px 12px;
    border-radius: 6px;
    cursor: pointer;
    font-size: 0.875rem;
    border: 1px solid var(--border);
    transition: border-color 0.2s ease, background 0.2s ease;
}

.checkbox-item:hover {
    border-color: var(--accent);
    background: var(--bg-secondary);
}

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

/* ============================================================================
   Quick Filters
   ============================================================================ */

.quick-filters {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    margin-bottom: 20px;
    padding: 12px 16px;
    background: var(--bg-primary);
    border-radius: 8px;
    border: 1px solid var(--border);
}

.filter-section {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
}

.filter-label {
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.btn-filter {
    padding: 6px 12px;
    font-size: 0.8125rem;
    font-family: var(--font-body);
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    color: var(--text-secondary);
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.2s ease;
}

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

.btn-filter.active {
    background: var(--accent);
    border-color: var(--accent);
    color: #ffffff;
}

/* ============================================================================
   Stats Panel
   ============================================================================ */

.stats-panel {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 16px;
    margin-bottom: 20px;
}

.stat-card {
    background: var(--bg-primary);
    padding: 16px;
    border-radius: 8px;
    border: 1px solid var(--border);
    border-left: 3px solid var(--accent);
}

.stat-card h3 {
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 8px;
}

.stat-card .value {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-primary);
}

.stat-card .detail {
    font-size: 0.8125rem;
    color: var(--text-muted);
    margin-top: 4px;
}

.stat-card.success {
    border-left-color: var(--success);
}

.stat-card.warning {
    border-left-color: var(--warning);
}

.stat-card.error {
    border-left-color: var(--error);
}

/* Top Lists in Stat Cards */
.top-list {
    list-style: none;
    font-size: 0.8125rem;
}

.top-list li {
    padding: 6px 0;
    border-bottom: 1px solid var(--border);
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 8px;
    align-items: center;
}

.top-list li:last-child {
    border-bottom: none;
}

.top-text {
    min-width: 0;
}

.top-title {
    font-weight: 500;
    color: var(--text-primary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.top-sub {
    font-size: 0.75rem;
    color: var(--text-muted);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* ============================================================================
   Target Info Panel
   ============================================================================ */

.target-info {
    background: var(--info-panel-bg);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 16px;
    margin-bottom: 20px;
}

.target-info h2 {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 12px;
    letter-spacing: -0.01em;
}

.target-details {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 12px;
}

.target-item {
    background: var(--bg-primary);
    padding: 12px;
    border-radius: 6px;
    border-left: 3px solid var(--accent-secondary);
}

.target-item.highlight {
    border-left-color: var(--accent);
}

.target-item .label {
    font-size: 0.6875rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 4px;
}

.target-item .value {
    font-family: var(--font-heading);
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
}

.target-item .value.success {
    color: var(--success);
}

.target-item .subtext {
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-top: 2px;
}

/* ============================================================================
   Section & Details/Summary
   ============================================================================ */

.section {
    background: var(--bg-primary);
    padding: 20px;
    border-radius: 8px;
    margin-bottom: 24px;
    border: 1px solid var(--border);
}

.section h2 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 16px;
}

details {
    background: var(--bg-primary);
    border: 1px solid var(--border);
    border-radius: 8px;
    margin-bottom: 20px;
}

details summary {
    padding: 12px 16px;
    cursor: pointer;
    font-weight: 500;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 8px;
    list-style: none;
}

details summary::-webkit-details-marker {
    display: none;
}

details summary::before {
    content: '▶';
    font-size: 0.65rem;
    transition: transform 0.2s ease;
    color: var(--text-secondary);
}

details[open] summary::before {
    transform: rotate(90deg);
}

details summary h2 {
    font-size: 0.875rem;
    margin: 0;
}

details[open] summary {
    border-bottom: 1px solid var(--border);
}

details > *:not(summary) {
    padding: 16px;
}

/* ============================================================================
   Filter Grid & Groups
   ============================================================================ */

.filter-grid {
    column-count: 5;
    column-gap: 12px;
}

@media (max-width: 1024px) {
    .filter-grid {
        column-count: 4;
    }
}

@media (max-width: 768px) {
    .filter-grid {
        column-count: 2;
    }
}

.filter-grid .checkbox-item {
    display: flex;
    width: 100%;
    margin: 0 0 8px 0;
    break-inside: avoid;
}

.filter-group {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 16px;
    margin-bottom: 16px;
}

.filter-group:last-child {
    margin-bottom: 0;
}

.filter-group h3 {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 12px;
}

.filter-buttons {
    margin-bottom: 16px;
    display: flex;
    gap: 8px;
}

/* ============================================================================
   Buttons
   ============================================================================ */

.btn {
    padding: 8px 16px;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    font-weight: 500;
    font-family: var(--font-body);
    font-size: 0.875rem;
    transition: all 0.2s ease;
}

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

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

.btn-secondary {
    background: var(--bg-secondary);
    color: var(--text-primary);
    border: 1px solid var(--border);
}

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

.btn-tertiary {
    background: transparent;
    color: var(--text-secondary);
    border: 1px solid var(--border);
    padding: 6px 12px;
    font-size: 0.8125rem;
}

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

/* ============================================================================
   Table Styles
   ============================================================================ */

.table-container {
    overflow-x: auto;
    max-height: 70vh;
    overflow-y: auto;
    border-radius: 8px;
    border: 1px solid var(--border);
}

table {
    width: 100%;
    border-collapse: collapse;
    background: var(--bg-primary);
}

thead {
    position: sticky;
    top: 0;
    z-index: 10;
}

th,
td {
    padding: 12px 16px;
    text-align: left;
    border-bottom: 1px solid var(--border);
    font-size: 0.875rem;
}

th {
    background: var(--bg-secondary);
    font-weight: 500;
    color: var(--text-secondary);
    cursor: pointer;
    position: relative;
    user-select: none;
    white-space: nowrap;
}

th:hover {
    color: var(--accent);
}

th.sorted-asc::after {
    content: " \25B2";
    color: var(--accent);
    font-size: 0.625rem;
}

th.sorted-desc::after {
    content: " \25BC";
    color: var(--accent);
    font-size: 0.625rem;
}

tbody tr {
    transition: background 0.15s ease;
}

tbody tr:hover td {
    background: var(--bg-secondary);
}

/* ============================================================================
   Status & Relative Cost Classes
   ============================================================================ */

.status-success {
    color: var(--success);
}

.status-crashed {
    color: var(--error);
    font-weight: 500;
}

.status-na {
    color: var(--muted);
    font-style: italic;
}

/* Marginal value indicator */
.marginal-value .cell-time {
    color: var(--accent);
}

.relative-low {
    color: var(--success);
}

.relative-moderate {
    color: var(--warning);
}

.relative-high {
    color: #f97316;
}

.relative-extreme {
    color: var(--error);
    font-weight: 600;
}

/* ============================================================================
   Badges
   ============================================================================ */

.category-badge {
    display: inline-block;
    background: var(--bg-secondary);
    color: var(--text-secondary);
    padding: 4px 8px;
    border-radius: 4px;
    font-size: 0.75rem;
    font-weight: 500;
}

.worst-zkvm-badge {
    display: inline-block;
    background: var(--bg-secondary);
    color: var(--text-muted);
    padding: 2px 6px;
    border-radius: 4px;
    font-size: 0.6875rem;
    margin-left: 4px;
    font-weight: 500;
}

/* ============================================================================
   Combined Cell (Relative Cost + Time)
   ============================================================================ */

.combined-cell {
    text-align: center;
    white-space: nowrap;
}

.combined-cell .cell-relative {
    font-weight: 600;
    display: block;
}

.combined-cell .cell-time {
    font-size: 0.75rem;
    display: block;
    margin-top: 2px;
    color: var(--text-muted);
}

.combined-cell .worst-zkvm-badge {
    margin-left: 0;
    margin-top: 4px;
}

/* ============================================================================
   Grouped Table Rows
   ============================================================================ */

.group-row {
    cursor: pointer;
    transition: background 0.15s ease;
}

.group-row:hover td {
    background: var(--bg-secondary);
}

.group-row.expanded {
    background: var(--bg-secondary);
}

.group-row.expanded td {
    border-bottom-color: var(--accent);
}

.fixture-count {
    color: var(--text-muted);
    font-size: 0.8125rem;
}

.fixture-row {
    background: var(--bg-secondary);
}

.fixture-row td {
    padding-top: 8px;
    padding-bottom: 8px;
    font-size: 0.8125rem;
}

.fixture-row:last-child td {
    border-bottom: 2px solid var(--accent);
}

.fixture-indent {
    width: 40px;
    min-width: 40px;
    text-align: right;
    padding-right: 8px;
    color: var(--text-muted);
}

.fixture-indent::after {
    content: "\2514";
    font-size: 0.75rem;
}

.fixture-name {
    color: var(--text-secondary);
    word-break: break-word;
}

/* ============================================================================
   Expandable Rows
   ============================================================================ */

.expandable-cell {
    cursor: pointer;
    user-select: none;
}

.expandable-cell:hover {
    color: var(--accent);
}

.expand-icon {
    display: inline-block;
    width: 16px;
    font-size: 0.625rem;
    color: var(--text-muted);
    margin-right: 4px;
}

.data-row.expanded {
    background: var(--bg-secondary);
}

.expanded-row td {
    padding: 0;
    background: var(--bg-secondary);
    border-bottom: 2px solid var(--accent);
}

.expanded-content {
    padding: 16px 20px;
    font-size: 0.875rem;
    line-height: 1.6;
}

.expanded-content strong {
    color: var(--text-secondary);
    font-weight: 500;
}

.expanded-zkvms {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 8px;
    margin-top: 12px;
}

.zkvm-detail {
    padding: 10px 12px;
    background: var(--bg-primary);
    border-radius: 6px;
    border-left: 3px solid var(--success);
    font-size: 0.8125rem;
}

.zkvm-detail.crashed {
    border-left-color: var(--error);
    color: var(--error);
}

/* ============================================================================
   Pagination
   ============================================================================ */

.pagination {
    display: flex;
    align-items: center;
    gap: 8px;
    margin: 16px 0;
    flex-wrap: wrap;
}

.pagination button {
    padding: 6px 12px;
    border: 1px solid var(--border);
    background: var(--bg-primary);
    color: var(--text-primary);
    border-radius: 6px;
    cursor: pointer;
    font-size: 0.8125rem;
    font-family: var(--font-body);
    transition: all 0.2s ease;
}

.pagination button:hover:not(:disabled) {
    border-color: var(--accent);
    color: var(--accent);
}

.pagination button:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

.pagination .page-info {
    color: var(--text-secondary);
    font-size: 0.8125rem;
}

.pagination select {
    padding: 6px 10px;
    border: 1px solid var(--border);
    background: var(--bg-primary);
    color: var(--text-primary);
    border-radius: 6px;
    font-size: 0.8125rem;
    font-family: var(--font-body);
}

/* ============================================================================
   Loading & Error States
   ============================================================================ */

.loading {
    text-align: center;
    padding: 60px 20px;
    color: var(--text-secondary);
    font-size: 1rem;
}

.error-message {
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid var(--error);
    color: var(--error);
    padding: 16px;
    border-radius: 8px;
}

/* ============================================================================
   Footer
   ============================================================================ */

footer {
    background: var(--bg-primary);
    padding: 24px 0;
    margin-top: 40px;
    border-top: 1px solid var(--border);
}

footer .container {
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
    align-items: center;
    justify-content: space-between;
}

footer p {
    color: var(--text-muted);
    font-size: 0.8125rem;
    margin: 0;
}

footer a {
    color: var(--accent);
    text-decoration: none;
    transition: color 0.2s ease;
}

footer a:hover {
    color: var(--accent-hover);
}

/* ============================================================================
   Utility Classes
   ============================================================================ */

.hidden {
    display: none !important;
}

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

/* ============================================================================
   Responsive Adjustments
   ============================================================================ */

@media (max-width: 768px) {
    .header-row {
        flex-direction: column;
        align-items: flex-start;
    }

    .header-text h1 {
        font-size: 1.25rem;
    }

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

    .quick-filters {
        flex-direction: column;
        gap: 12px;
    }

    .filter-section {
        flex-wrap: wrap;
    }

    .btn-filter {
        flex: 1;
        min-width: 80px;
        text-align: center;
    }

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

    footer .container {
        flex-direction: column;
        align-items: flex-start;
    }
}