/**
 * Any53 Base Styles
 * Common styles for all pages
 */

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

/* Light mode (default) */
:root {
    --bg-primary: #ffffff;
    --bg-secondary: #f8f9fa;
    --bg-tertiary: #e9ecef;
    --accent: #0066cc;
    --accent-dim: #004d99;
    --accent-bg: #e6f0ff;
    --accent-hover: #004d99;
    --text-primary: #1a1a1a;
    --text-secondary: #4a4a4a;
    --text-muted: #6b6b6b;
    --success: #0d7a3e;
    --success-bg: #d4edda;
    --warning: #996600;
    --warning-bg: #fff3cd;
    --error: #c41e3a;
    --error-bg: #f8d7da;
    --border: #d1d5db;
    --radius: 8px;
    --radius-sm: 4px;
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    --font-mono: 'JetBrains Mono', ui-monospace, "SF Mono", Menlo, Monaco, "Cascadia Code", Consolas, monospace;
}

/* Dark mode via OS preference */
@media (prefers-color-scheme: dark) {
    :root:not([data-theme="light"]) {
        --bg-primary: #0f0f1a;
        --bg-secondary: #1a1a2e;
        --bg-tertiary: #252540;
        --accent: #00d4ff;
        --accent-dim: #00a3c7;
        --accent-bg: #0d2d3a;
        --accent-hover: #00a3c7;
        --text-primary: #f0f0f0;
        --text-secondary: #b0b0b0;
        --text-muted: #808080;
        --success: #34d399;
        --success-bg: #064e3b;
        --warning: #fbbf24;
        --warning-bg: #78350f;
        --error: #f87171;
        --error-bg: #7f1d1d;
        --border: #404050;
    }
}

/* Dark mode via manual toggle */
:root[data-theme="dark"] {
    --bg-primary: #0f0f1a;
    --bg-secondary: #1a1a2e;
    --bg-tertiary: #252540;
    --accent: #00d4ff;
    --accent-dim: #00a3c7;
    --accent-bg: #0d2d3a;
    --accent-hover: #00a3c7;
    --text-primary: #f0f0f0;
    --text-secondary: #b0b0b0;
    --text-muted: #808080;
    --success: #34d399;
    --success-bg: #064e3b;
    --warning: #fbbf24;
    --warning-bg: #78350f;
    --error: #f87171;
    --error-bg: #7f1d1d;
    --border: #404050;
}

/* Skip link for keyboard users - visually hidden until focused */
.skip-link {
    position: absolute;
    left: -9999px;
    top: auto;
    width: 1px;
    height: 1px;
    overflow: hidden;
    z-index: 1000;
}
.skip-link:focus {
    position: fixed;
    top: 0;
    left: 0;
    width: auto;
    height: auto;
    overflow: visible;
    background: var(--accent);
    color: #ffffff;
    padding: 0.75rem 1rem;
    text-decoration: none;
    font-weight: 600;
    border-radius: 0 0 var(--radius) 0;
    outline: 3px solid var(--text-primary);
    outline-offset: 2px;
}

body {
    font-family: var(--font-sans);
    background: var(--bg-primary);
    color: var(--text-primary);
    min-height: 100vh;
    line-height: 1.6;
    transition: background-color 0.2s ease, color 0.2s ease;
}

/* Links */
a {
    color: var(--accent);
    text-decoration: underline;
    text-decoration-color: var(--accent-dim);
    text-underline-offset: 2px;
}
a:hover {
    color: var(--accent-hover);
    text-decoration-color: var(--accent-hover);
}
a:visited {
    color: var(--accent-dim);
}

.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: 1rem;
    color: var(--text-secondary);
}

/* Navigation */
.nav {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 2rem;
    flex-wrap: wrap;
}
.nav a {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 44px;
    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: color 0.15s ease, border-color 0.15s ease, background-color 0.15s ease;
}
.nav a:hover {
    color: var(--accent);
    border-color: var(--accent-dim);
}
.nav a.active {
    color: var(--accent);
    border-color: var(--accent);
    background: var(--accent-bg);
}

/* Theme toggle button */
.theme-toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 44px;
    min-height: 44px;
    padding: 0.5rem;
    font-size: 1.25rem;
    line-height: 1;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: var(--bg-secondary);
    color: var(--text-secondary);
    cursor: pointer;
    transition: color 0.15s ease, border-color 0.15s ease;
    margin-left: 0.25rem;
}
.theme-toggle:hover {
    color: var(--accent);
    border-color: var(--accent-dim);
}
.theme-toggle[aria-pressed="true"] {
    background: var(--accent-bg);
    border-color: var(--accent);
}

/* Search Form */
.search-form {
    margin-bottom: 2rem;
}
.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;
    min-height: 44px;
    padding: 0.75rem 1rem;
    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);
}
.search-row input::placeholder {
    color: var(--text-muted);
}
.search-row button[type="submit"] {
    min-height: 44px;
    padding: 0.75rem 1.5rem;
    font-size: 0.875rem;
    font-weight: 600;
    border: none;
    border-radius: var(--radius-sm);
    background: var(--accent);
    color: #ffffff;
    cursor: pointer;
    transition: background-color 0.15s ease;
    white-space: nowrap;
}
.search-row button[type="submit"]:hover {
    background: var(--accent-dim);
}

/* Cards */
.card {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    margin-bottom: 1.5rem;
    overflow: hidden;
}
.card-header {
    padding: 1rem 1.25rem;
    background: var(--bg-tertiary);
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
}
.card-header h2 {
    font-size: 1.125rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}
.card-header .type-badge {
    font-size: 0.6875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    padding: 0.25rem 0.5rem;
    border-radius: var(--radius-sm);
    background: var(--accent);
    color: #ffffff;
}
.card-body {
    padding: 1.25rem;
}

/* Detail rows */
.detail-row {
    display: flex;
    padding: 0.75rem 0;
    border-bottom: 1px solid var(--border);
}
.detail-row:last-child {
    border-bottom: none;
}
.detail-label {
    flex: 0 0 160px;
    font-size: 0.8125rem;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.025em;
}
.detail-value {
    flex: 1;
    font-size: 0.9375rem;
    color: var(--text-primary);
    word-break: break-word;
}
.detail-value.mono {
    font-family: var(--font-mono);
    font-size: 0.875rem;
}
.detail-value a {
    color: var(--accent);
    text-decoration: underline;
    text-decoration-color: transparent;
    text-underline-offset: 2px;
    transition: text-decoration-color 0.15s ease;
}
.detail-value a:hover {
    text-decoration-color: var(--accent);
}

/* Related items grid */
.related-section {
    margin-top: 1.5rem;
}
.related-section h3 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.75rem;
    padding-bottom: 0.5rem;
    border-bottom: 1px solid var(--border);
}
.related-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 0.75rem;
}
.related-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    min-height: 44px;
    padding: 0.625rem 0.875rem;
    background: var(--bg-tertiary);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    font-size: 0.875rem;
    color: var(--text-primary);
    text-decoration: none;
    transition: border-color 0.15s ease, color 0.15s ease;
}
.related-item:hover {
    border-color: var(--accent-dim);
    color: var(--accent);
}
.related-item .icon {
    font-size: 1rem;
    opacity: 0.7;
}
.related-item .label {
    font-family: var(--font-mono);
    font-size: 0.8125rem;
}

/* Tags/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); border: 1px solid var(--border); }
.badge.accent { background: rgba(59, 130, 246, 0.15); color: var(--accent); }

/* Tags list */
.tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.375rem;
}
.tag {
    font-size: 0.75rem;
    padding: 0.25rem 0.5rem;
    background: var(--bg-tertiary);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
}

/* Actions */
.actions {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}
.action-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 44px;
    padding: 0.5rem 1rem;
    font-size: 0.8125rem;
    font-weight: 500;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    background: var(--bg-tertiary);
    color: var(--text-primary);
    cursor: pointer;
    text-decoration: none;
    transition: border-color 0.15s ease, color 0.15s ease;
}
.action-btn:hover {
    border-color: var(--accent-dim);
    color: var(--accent);
}
.action-btn.primary {
    background: var(--accent);
    color: #ffffff;
    border-color: var(--accent);
}
.action-btn.primary:hover {
    background: var(--accent-dim);
    border-color: var(--accent-dim);
}

/* Results list */
.results-list {
    list-style: none;
}
.result-item {
    display: block;
    padding: 1rem 1.25rem;
    border-bottom: 1px solid var(--border);
    text-decoration: none;
    color: inherit;
    transition: background-color 0.1s ease;
}
.result-item:hover,
.result-item:focus {
    background: var(--bg-tertiary);
}
.result-item:last-child {
    border-bottom: none;
}
.result-title {
    font-size: 1rem;
    font-weight: 600;
    color: var(--accent);
    margin-bottom: 0.25rem;
    font-family: var(--font-mono);
}
.result-meta {
    font-size: 0.8125rem;
    color: var(--text-secondary);
}

/* 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);
}

/* 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: underline;
    text-decoration-color: transparent;
    text-underline-offset: 2px;
    transition: text-decoration-color 0.15s ease;
}
.footer a:hover {
    text-decoration-color: var(--accent);
}

/* Loading */
.loading {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem;
    color: var(--text-muted);
}
.spinner {
    width: 20px;
    height: 20px;
    border: 2px solid var(--border);
    border-top-color: var(--accent);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
    margin-right: 0.75rem;
}
@keyframes spin {
    to { transform: rotate(360deg); }
}

/* Message */
.message {
    padding: 1rem;
    border-radius: var(--radius);
    margin-bottom: 1rem;
    font-size: 0.875rem;
}
.message.info {
    background: var(--bg-tertiary);
    border: 1px solid var(--border);
    color: var(--text-secondary);
}
.message.success {
    background: var(--success-bg);
    border: 1px solid var(--success);
    color: var(--success);
}
.message.error {
    background: var(--error-bg);
    border: 1px solid var(--error);
    color: var(--error);
}

/* Code */
code {
    font-family: var(--font-mono);
    font-size: 0.875em;
    background: var(--bg-tertiary);
    padding: 0.125rem 0.375rem;
    border-radius: 3px;
}

/* Accessibility: Focus states */
a:focus-visible,
button:focus-visible,
input:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
}

/* Accessibility: Respect reduced motion */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* Responsive */
@media (max-width: 768px) {
    .container {
        padding: 1.5rem 1rem;
    }
    .search-row {
        flex-wrap: wrap;
    }
    .search-row input {
        width: 100%;
    }
    .search-row button[type="submit"] {
        flex: 1;
    }
    .detail-row {
        flex-direction: column;
        gap: 0.25rem;
    }
    .detail-label {
        flex: none;
    }
    .card-header {
        flex-direction: column;
        align-items: flex-start;
    }
}

@media (max-width: 480px) {
    .nav {
        flex-direction: column;
        width: 100%;
    }
    .nav a {
        width: 100%;
        text-align: center;
    }
    .theme-toggle {
        margin-left: 0;
        width: 100%;
    }
}