/* ------------------------------------------------------------------
   Shared site chrome: design tokens, base reset, top nav, collapsible
   panels, and common form-control styling. Loaded on every page before
   the page's own <style> block, so page-specific rules still win.
   ------------------------------------------------------------------ */

:root {
    --bg: #0d0e12;
    --bg-elevated: #14161c;
    --surface: #1a1d24;
    --surface-hover: #232732;
    --border: #2a2e38;
    --text: #eceef1;
    --text-muted: #9aa0ab;
    --text-dim: #6b7280;
    --accent: #35c15a;
    --accent-hover: #43d268;
    --accent-soft: rgba(53, 193, 90, .16);
    --like: #e0578a;
    --like-soft: rgba(224, 87, 138, .16);
    --radius: 10px;
    --radius-sm: 6px;
    --shadow: 0 8px 24px rgba(0, 0, 0, .35);
}

* {
    box-sizing: border-box;
}

html,
body {
    background: var(--bg);
    color: var(--text);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji";
    font-size: 16px;
    margin: 0;
    padding: 0;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
}

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

/* ---- Top navigation ------------------------------------------------ */

.site-header {
    background-color: var(--bg-elevated);
    border-bottom: 1px solid var(--border);
}

.site-nav {
    align-items: center;
    display: flex;
    flex-wrap: wrap;
    gap: .35rem .5rem;
    margin: 0 auto;
    max-width: 1300px;
    padding: .55rem 1.75rem;
}

.site-nav .brand {
    color: var(--text);
    font-weight: 700;
    letter-spacing: .01em;
    margin-right: auto;
    padding: .45rem .35rem;
    text-decoration: none;
}

.site-nav .brand.active {
    color: var(--accent);
}

.site-nav .nav-links {
    display: flex;
    flex-wrap: wrap;
    gap: .15rem;
}

.site-nav .nav-links a {
    border-radius: var(--radius-sm);
    color: var(--text-muted);
    display: block;
    font-size: .95rem;
    padding: .45rem .7rem;
    text-decoration: none;
    white-space: nowrap;
}

.site-nav .nav-links a:hover,
.site-nav .nav-links a:focus-visible {
    background-color: var(--accent-soft);
    color: var(--accent-hover);
}

.site-nav .nav-links a.active {
    color: var(--accent);
}

.site-nav .nav-toggle {
    background: none;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    color: var(--text);
    cursor: pointer;
    display: none;
    font-size: 1.2rem;
    height: 40px;
    line-height: 1;
    width: 44px;
}

@media (max-width: 720px) {
    .site-nav {
        padding: .55rem 1rem;
    }

    .site-nav .nav-toggle {
        display: block;
    }

    .site-nav .nav-links {
        flex-basis: 100%;
        flex-direction: column;
        gap: 0;
        padding: .35rem 0 .5rem;
    }

    .site-nav .nav-links[hidden] {
        display: none;
    }

    .site-nav .nav-links a {
        border-radius: 0;
        border-top: 1px solid var(--border);
        font-size: 1rem;
        padding: .7rem .35rem;
    }
}

/* ---- Collapsible <details> panels -------------------------------- */

.collapsible {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    margin-top: 1rem;
    padding: 0 1rem;
}

.collapsible summary {
    color: var(--text);
    cursor: pointer;
    font-size: 105%;
    font-weight: 600;
    list-style: none;
    padding: .85rem 0;
}

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

.collapsible summary::before {
    color: var(--accent);
    content: '\25B8';
    display: inline-block;
    margin-right: .5rem;
    transition: transform 150ms ease;
}

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

.collapsible-body {
    padding-bottom: 1.25rem;
}

/* ---- Shared form controls -------------------------------------- */

.search {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    color: var(--text);
    height: 40px;
    padding: 8px 12px;
}

.search:focus {
    border-color: var(--accent);
    outline: none;
}

button {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    color: var(--text);
    cursor: pointer;
    height: 36px;
    padding: 0 .9rem;
}

button:hover {
    background: var(--surface-hover);
    border-color: var(--accent);
}

/* Primary call-to-action button */
.btn-primary {
    background: var(--accent);
    border-color: var(--accent);
    color: #06130a;
    font-weight: 600;
}

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

/* Secondary / ghost button */
.btn-ghost {
    background: transparent;
}

select,
input[type="file"] {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    color: var(--text);
    padding: .3rem .5rem;
}

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