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

.visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

:root {
    --bg-primary: #0f0f1a;
    --bg-secondary: #1a1a2e;
    --bg-tertiary: #252540;
    --accent: #00d4ff;
    --accent-dim: #0099bb;
    --text-primary: #f0f0f0;
    --text-secondary: #9ca3af;
    --text-muted: #6b7280;
    --success: #10b981;
    --success-bg: #064e3b;
    --warning: #f59e0b;
    --warning-bg: #78350f;
    --error: #ef4444;
    --error-bg: #7f1d1d;
    --border: #374151;
    --radius: 8px;
    --radius-sm: 4px;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    min-height: 100vh;
    line-height: 1.5;
}

.container {
    max-width: 1024px;
    margin: 0 auto;
    padding: 2rem 1.5rem;
}

/* Header */
.header {
    text-align: center;
    margin-bottom: 2rem;
}

.header h1 {
    font-size: 1.75rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.header .subtitle {
    font-size: 0.9375rem;
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
}

.header .endpoint {
    margin-top: 0.5rem;
}

.header .endpoint code {
    font-family: "SF Mono", Monaco, "Cascadia Code", monospace;
    font-size: 0.875rem;
    color: var(--accent);
    background: var(--bg-tertiary);
    padding: 0.25rem 0.75rem;
    border-radius: var(--radius-sm);
}

/* Navigation */
.nav {
    display: flex;
    justify-content: center;
    gap: 0.5rem;
    margin-bottom: 2rem;
    flex-wrap: wrap;
}

.nav a {
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-secondary);
    text-decoration: none;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    transition: all 0.15s;
}

.nav a:hover {
    color: var(--accent);
    border-color: var(--accent-dim);
}

.nav a.active {
    color: var(--accent);
    border-color: var(--accent);
    background: var(--bg-tertiary);
}

/* Search Form */
.search-form {
    margin-bottom: 1.5rem;
}

.search-row {
    display: flex;
    gap: 0.5rem;
    background: var(--bg-secondary);
    padding: 0.5rem;
    border-radius: var(--radius);
    border: 1px solid var(--border);
}

.search-row input[type="text"],
.search-row input[type="search"] {
    flex: 1;
    min-width: 0;
    padding: 0.625rem 0.875rem;
    font-size: 1rem;
    border: none;
    border-radius: var(--radius-sm);
    background: var(--bg-tertiary);
    color: var(--text-primary);
    outline: none;
}

.search-row input:focus {
    box-shadow: 0 0 0 2px var(--accent-dim);
}

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

.search-row select {
    padding: 0.625rem 0.75rem;
    font-size: 0.875rem;
    font-weight: 500;
    border: none;
    border-radius: var(--radius-sm);
    background: var(--bg-tertiary);
    color: var(--text-primary);
    cursor: pointer;
    outline: none;
}

.search-row select:focus {
    box-shadow: 0 0 0 2px var(--accent-dim);
}

.search-row button {
    padding: 0.625rem 1.25rem;
    font-size: 0.875rem;
    font-weight: 600;
    border: none;
    border-radius: var(--radius-sm);
    background: var(--accent);
    color: var(--bg-primary);
    cursor: pointer;
    transition: background 0.15s, transform 0.1s;
    white-space: nowrap;
}

.search-row button:hover {
    background: var(--accent-dim);
}

.search-row button:active {
    transform: scale(0.98);
}

/* Filters */
.filters {
    display: flex;
    gap: 0.75rem;
    margin-bottom: 1rem;
    flex-wrap: wrap;
    align-items: center;
}

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

.filter-btn {
    padding: 0.375rem 0.75rem;
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--text-secondary);
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all 0.15s;
}

.filter-btn:hover {
    color: var(--text-primary);
    border-color: var(--text-muted);
}

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

/* Stats Bar */
.stats-bar {
    display: flex;
    gap: 1.5rem;
    padding: 0.75rem 1rem;
    background: var(--bg-secondary);
    border-radius: var(--radius);
    border: 1px solid var(--border);
    margin-bottom: 1.5rem;
    flex-wrap: wrap;
}

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

.stat strong {
    color: var(--text-primary);
    font-weight: 600;
}

.stat .accent {
    color: var(--accent);
}

/* Status Messages */
.status {
    padding: 0.75rem 1rem;
    border-radius: var(--radius);
    margin-bottom: 1rem;
    font-size: 0.875rem;
    display: none;
}

.status.loading {
    display: block;
    background: var(--bg-secondary);
    color: var(--accent);
    border: 1px solid var(--border);
}

.status.error {
    display: block;
    background: var(--error-bg);
    color: var(--error);
    border: 1px solid var(--error);
}

/* Results Table */
.results-table {
    width: 100%;
    border-collapse: collapse;
    background: var(--bg-secondary);
    border-radius: var(--radius);
    overflow: hidden;
    border: 1px solid var(--border);
}

.results-table th,
.results-table td {
    padding: 0.75rem 1rem;
    text-align: left;
    border-bottom: 1px solid var(--border);
}

.results-table th {
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-muted);
    background: var(--bg-tertiary);
    cursor: pointer;
    user-select: none;
    white-space: nowrap;
}

.results-table th:hover {
    color: var(--text-secondary);
}

.results-table th.sorted {
    color: var(--accent);
}

.results-table th .sort-icon {
    margin-left: 0.25rem;
    opacity: 0.5;
}

.results-table th.sorted .sort-icon {
    opacity: 1;
}

.results-table tbody tr {
    transition: background 0.1s;
}

.results-table tbody tr:hover {
    background: var(--bg-tertiary);
}

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

.results-table td {
    font-size: 0.875rem;
    color: var(--text-primary);
}

.results-table .tld {
    font-family: "SF Mono", Monaco, monospace;
    font-weight: 600;
    color: var(--accent);
}

.results-table .secondary {
    color: var(--text-secondary);
    font-size: 0.8125rem;
}

.results-table .mono {
    font-family: "SF Mono", Monaco, monospace;
    font-size: 0.8125rem;
}

.results-table .truncate {
    max-width: 250px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

/* Badges */
.badge {
    display: inline-block;
    font-size: 0.6875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.025em;
    padding: 0.25rem 0.5rem;
    border-radius: var(--radius-sm);
    white-space: nowrap;
}

.badge.success {
    background: var(--success-bg);
    color: var(--success);
}

.badge.warning {
    background: var(--warning-bg);
    color: var(--warning);
}

.badge.error {
    background: var(--error-bg);
    color: var(--error);
}

.badge.neutral {
    background: var(--bg-tertiary);
    color: var(--text-secondary);
}

/* Cards Grid (for index) */
.cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.card {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1.5rem;
    transition: border-color 0.15s, transform 0.15s;
    text-decoration: none;
    color: inherit;
    display: block;
}

.card:hover {
    border-color: var(--accent-dim);
    transform: translateY(-2px);
}

.card h2 {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.card .card-tld {
    font-family: "SF Mono", Monaco, monospace;
    color: var(--accent);
    font-size: 1rem;
}

.card p {
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-bottom: 1rem;
}

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

.card .card-stat strong {
    color: var(--accent);
}

/* CTA Section */
.cta {
    background: linear-gradient(135deg, var(--bg-secondary), var(--bg-tertiary));
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 1.5rem;
    margin-top: 2rem;
    text-align: center;
}

.cta h3 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.cta p {
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-bottom: 1rem;
}

.cta a {
    display: inline-block;
    padding: 0.625rem 1.5rem;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--bg-primary);
    background: var(--accent);
    border-radius: var(--radius-sm);
    text-decoration: none;
    transition: background 0.15s;
}

.cta a:hover {
    background: var(--accent-dim);
}

/* Pagination */
.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 0.5rem;
    margin-top: 1.5rem;
}

.pagination button {
    padding: 0.5rem 1rem;
    font-size: 0.8125rem;
    font-weight: 500;
    color: var(--text-secondary);
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all 0.15s;
}

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

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

.pagination .page-info {
    font-size: 0.8125rem;
    color: var(--text-muted);
    padding: 0 1rem;
}

/* Footer */
.footer {
    margin-top: 2rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--border);
    text-align: center;
}

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

.footer a {
    color: var(--accent);
    text-decoration: none;
}

.footer a:hover {
    text-decoration: underline;
}

/* Detail View */
.detail-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    overflow: hidden;
    margin-bottom: 1.5rem;
}

.detail-header {
    padding: 1.25rem;
    background: var(--bg-tertiary);
    border-bottom: 1px solid var(--border);
}

.detail-header h2 {
    font-size: 1.5rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.detail-header .tld-label {
    font-family: "SF Mono", Monaco, monospace;
    color: var(--accent);
}

.detail-body {
    padding: 1.25rem;
}

.detail-row {
    display: flex;
    padding: 0.625rem 0;
    border-bottom: 1px solid var(--border);
}

.detail-row:last-child {
    border-bottom: none;
}

.detail-label {
    flex: 0 0 140px;
    font-size: 0.8125rem;
    font-weight: 500;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.025em;
}

.detail-value {
    flex: 1;
    font-size: 0.9375rem;
    color: var(--text-primary);
}

.detail-value.mono {
    font-family: "SF Mono", Monaco, monospace;
}

.detail-value a {
    color: var(--accent);
    text-decoration: none;
}

.detail-value a:hover {
    text-decoration: underline;
}

/* Empty State */
.empty-state {
    text-align: center;
    padding: 3rem 1.5rem;
    color: var(--text-muted);
}

.empty-state h3 {
    font-size: 1rem;
    font-weight: 500;
    margin-bottom: 0.5rem;
    color: var(--text-secondary);
}

.empty-state p {
    font-size: 0.875rem;
}

/* Responsive */
@media (max-width: 768px) {
    .container {
        padding: 1.5rem 1rem;
    }

    .search-row {
        flex-wrap: wrap;
    }

    .search-row input[type="text"],
    .search-row input[type="search"] {
        width: 100%;
    }

    .search-row select,
    .search-row button {
        flex: 1;
    }

    .stats-bar {
        gap: 1rem;
    }

    .results-table {
        display: block;
        overflow-x: auto;
    }

    .detail-row {
        flex-direction: column;
        gap: 0.25rem;
    }

    .detail-label {
        flex: none;
    }
}

@media (max-width: 480px) {
    .nav {
        flex-direction: column;
    }

    .nav a {
        text-align: center;
    }

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

    .filter-btn {
        text-align: center;
    }
}