/* Modern site chrome — header, footer, shared primitives.
   Loaded on every page from base.html. */

:root {
    --site-paper: #ffffff;
    --site-paper-warm: #faf9f5;
    --site-ink: #18181b;
    --site-ink-soft: #52525b;
    --site-ink-mute: #71717a;
    --site-rule: #e4e4e7;
    --site-rule-strong: #d4d4d8;
    --site-accent: #1a8754;
    --site-accent-hover: #146c43;
    --site-accent-soft: #ecfdf5;
    --site-radius: 10px;
    --site-radius-sm: 6px;
    --site-shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.04);
    --site-shadow: 0 4px 12px rgba(0, 0, 0, 0.06);
    --site-sans: -apple-system, BlinkMacSystemFont, 'Inter', 'Segoe UI', 'Helvetica Neue', Arial, sans-serif;
}

[data-theme="dark"] {
    --site-paper: #0e0f11;
    --site-paper-warm: #15171a;
    --site-ink: #f4f4f5;
    --site-ink-soft: #a1a1aa;
    --site-ink-mute: #71717a;
    --site-rule: #27272a;
    --site-rule-strong: #3f3f46;
    --site-accent: #4ec18a;
    --site-accent-hover: #3aa874;
    --site-accent-soft: #18261f;
    --site-shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.4);
    --site-shadow: 0 4px 12px rgba(0, 0, 0, 0.5);
}

/* ============ Header ============ */
.site-header {
    position: sticky;
    top: 0;
    z-index: 1030;
    background: color-mix(in srgb, var(--site-paper) 88%, transparent);
    backdrop-filter: saturate(180%) blur(14px);
    -webkit-backdrop-filter: saturate(180%) blur(14px);
    border-bottom: 1px solid var(--site-rule);
}

.site-header-inner {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    max-width: 1240px;
    margin: 0 auto;
    padding: 0.75rem clamp(1rem, 4vw, 2rem);
    height: 64px;
    font-family: var(--site-sans);
}

.site-brand {
    display: inline-flex;
    align-items: center;
    gap: 0.6rem;
    text-decoration: none;
    color: var(--site-ink);
    font-weight: 600;
    font-size: 1.05rem;
    letter-spacing: -0.01em;
    flex-shrink: 0;
}

.site-brand img {
    height: 44px;
    width: auto;
    display: block;
}

.site-brand-text {
    display: none;
}

@media (min-width: 480px) {
    .site-brand-text {
        display: inline;
    }
}

.site-nav {
    display: flex;
    align-items: center;
    gap: 0.25rem;
    margin-left: 0.5rem;
}

.site-nav a,
.site-nav .site-nav-toggle {
    position: relative;
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    padding: 0.5rem 0.85rem;
    border-radius: var(--site-radius-sm);
    font-size: 0.92rem;
    font-weight: 500;
    color: var(--site-ink-soft);
    text-decoration: none;
    background: transparent;
    border: 0;
    cursor: pointer;
    transition: color 0.15s ease, background 0.15s ease;
    white-space: nowrap;
}

.site-nav a:hover,
.site-nav a:focus-visible,
.site-nav .site-nav-toggle:hover,
.site-nav .site-nav-toggle[aria-expanded="true"] {
    color: var(--site-ink);
    background: var(--site-paper-warm);
}

.site-nav a.is-active {
    color: var(--site-ink);
}

.site-nav a.is-active::after {
    content: '';
    position: absolute;
    left: 0.85rem;
    right: 0.85rem;
    bottom: -14px;
    height: 2px;
    background: var(--site-accent);
    border-radius: 2px;
}

.site-spacer {
    flex: 1;
}

/* Header actions (right side) */
.site-actions {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    flex-shrink: 0;
}

.site-icon-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border-radius: 999px;
    background: transparent;
    border: 1px solid transparent;
    color: var(--site-ink-soft);
    text-decoration: none;
    cursor: pointer;
    transition: all 0.15s ease;
}

.site-icon-btn:hover {
    color: var(--site-ink);
    background: var(--site-paper-warm);
    border-color: var(--site-rule);
}

.site-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.5rem 1rem;
    border-radius: 999px;
    font-size: 0.88rem;
    font-weight: 500;
    text-decoration: none;
    cursor: pointer;
    border: 1px solid transparent;
    transition: all 0.15s ease;
    white-space: nowrap;
}

.site-btn-ghost {
    color: var(--site-ink);
    background: transparent;
}

.site-btn-ghost:hover {
    background: var(--site-paper-warm);
    color: var(--site-ink);
}

.site-btn-primary {
    background: var(--site-ink);
    color: var(--site-paper);
}

.site-btn-primary:hover {
    background: var(--site-accent);
    color: #fff;
}

/* ---- Expandable header search ---- */
.site-search {
    display: inline-flex;
    align-items: center;
    border-radius: 999px;
    border: 1px solid transparent;
    background: transparent;
    padding: 0;
    transition: width 0.25s ease, background 0.2s ease, border-color 0.2s ease, padding 0.2s ease;
    overflow: hidden;
}

.site-search[data-open="true"] {
    background: var(--site-paper);
    border-color: var(--site-rule-strong);
    padding: 0 0.25rem 0 0.85rem;
    box-shadow: 0 0 0 3px var(--site-accent-soft);
}

.site-search-input {
    width: 0;
    border: 0;
    background: transparent;
    color: var(--site-ink);
    font-family: var(--site-sans);
    font-size: 0.9rem;
    padding: 0;
    outline: none;
    opacity: 0;
    transition: width 0.25s ease, opacity 0.2s ease 0.05s, padding 0.2s ease;
    pointer-events: none;
    flex-shrink: 0;
}

.site-search[data-open="true"] .site-search-input {
    width: 220px;
    opacity: 1;
    padding: 0.45rem 0.5rem 0.45rem 0;
    pointer-events: auto;
}

@media (max-width: 540px) {
    .site-search[data-open="true"] .site-search-input {
        width: clamp(140px, 38vw, 220px);
    }
}

.site-search-input::placeholder { color: var(--site-ink-mute); }

/* Hide the native browser clear button for type="search" so it doesn't
   double up with our own close (×) button. */
.site-search-input::-webkit-search-cancel-button,
.site-search-input::-webkit-search-decoration,
.site-search-input::-webkit-search-results-button,
.site-search-input::-webkit-search-results-decoration {
    -webkit-appearance: none;
    appearance: none;
    display: none;
}
.site-search-input::-ms-clear,
.site-search-input::-ms-reveal {
    display: none;
    width: 0;
    height: 0;
}

.site-search-close {
    width: 28px;
    height: 28px;
    display: none;
    border: 0;
    background: transparent;
    color: var(--site-ink-mute);
}

.site-search[data-open="true"] .site-search-close { display: inline-flex; }
.site-search-close:hover { color: var(--site-ink); background: var(--site-paper-warm); }

.site-search[data-open="true"] .site-search-toggle {
    color: var(--site-ink);
    background: transparent;
    border-color: transparent;
}

.site-search[data-open="true"] .site-search-toggle:hover {
    background: var(--site-paper-warm);
}

/* ============ Dropdown ============ */
.site-dropdown {
    position: relative;
}

.site-dropdown-menu {
    position: absolute;
    top: calc(100% + 8px);
    right: 0;
    min-width: 240px;
    max-height: min(70vh, 480px);
    overflow-y: auto;
    overscroll-behavior: contain;
    padding: 0.45rem;
    background: var(--site-paper);
    border: 1px solid var(--site-rule);
    border-radius: var(--site-radius);
    box-shadow: var(--site-shadow);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-4px);
    transition: opacity 0.15s ease, transform 0.15s ease, visibility 0s linear 0.15s;
    z-index: 1040;
    scrollbar-width: thin;
    scrollbar-color: var(--site-rule-strong) transparent;
}

.site-dropdown-menu::-webkit-scrollbar { width: 6px; }
.site-dropdown-menu::-webkit-scrollbar-track { background: transparent; }
.site-dropdown-menu::-webkit-scrollbar-thumb {
    background: var(--site-rule-strong);
    border-radius: 999px;
}

.site-dropdown[data-open="true"] > .site-dropdown-menu,
.site-dropdown:focus-within > .site-dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
    transition: opacity 0.15s ease, transform 0.15s ease, visibility 0s;
}

.site-dropdown-menu.align-start {
    right: auto;
    left: 0;
}

.site-dropdown-section + .site-dropdown-section {
    border-top: 1px solid var(--site-rule);
    margin-top: 0.4rem;
    padding-top: 0.4rem;
}

.site-dropdown-label {
    font-size: 0.7rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--site-ink-mute);
    padding: 0.5rem 0.65rem 0.3rem;
}

.site-dropdown-menu a {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.75rem;
    padding: 0.55rem 0.65rem;
    border-radius: var(--site-radius-sm);
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--site-ink);
    text-decoration: none;
    transition: background 0.12s ease;
}

.site-dropdown-menu a:hover,
.site-dropdown-menu a:focus-visible {
    background: var(--site-paper-warm);
    color: var(--site-ink);
}

.site-dropdown-menu .item-count {
    font-size: 0.78rem;
    color: var(--site-ink-mute);
    font-variant-numeric: tabular-nums;
}

.site-dropdown-empty {
    padding: 0.75rem 0.65rem;
    color: var(--site-ink-mute);
    font-size: 0.85rem;
}

/* User avatar */
.site-avatar {
    width: 32px;
    height: 32px;
    border-radius: 999px;
    background: var(--site-accent);
    color: #fff;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: 0.8rem;
    letter-spacing: 0.02em;
    overflow: hidden;
    flex-shrink: 0;
}

.site-avatar-btn {
    background: transparent;
    border: 1px solid var(--site-rule);
    border-radius: 999px;
    padding: 2px;
    cursor: pointer;
    transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.site-avatar-btn:hover,
.site-avatar-btn[aria-expanded="true"] {
    border-color: var(--site-rule-strong);
    box-shadow: 0 0 0 3px var(--site-paper-warm);
}

/* ============ Mobile menu ============ */
.site-menu-btn {
    display: none;
}

@media (max-width: 800px) {
    .site-nav {
        display: none;
        position: absolute;
        top: 64px;
        left: 0;
        right: 0;
        flex-direction: column;
        align-items: stretch;
        gap: 0;
        padding: 0.6rem;
        background: var(--site-paper);
        border-bottom: 1px solid var(--site-rule);
        box-shadow: var(--site-shadow);
    }

    .site-nav.is-open {
        display: flex;
    }

    .site-nav a,
    .site-nav .site-nav-toggle {
        width: 100%;
        justify-content: flex-start;
        padding: 0.7rem 0.85rem;
    }

    .site-nav a.is-active::after {
        display: none;
    }

    .site-menu-btn {
        display: inline-flex;
    }

    .site-actions .desktop-only {
        display: none;
    }
}

@media (min-width: 801px) {
    .site-actions .mobile-only {
        display: none;
    }
}

/* ============ Footer ============ */
.site-footer {
    background: var(--site-paper-warm);
    border-top: 1px solid var(--site-rule);
    color: var(--site-ink-soft);
    font-family: var(--site-sans);
    margin-top: 4rem;
}

[data-theme="dark"] .site-footer {
    background: #0a0b0d;
    border-top-color: #1f2025;
}

.site-footer-inner {
    max-width: 1240px;
    margin: 0 auto;
    padding: clamp(2.5rem, 5vw, 4rem) clamp(1rem, 4vw, 2rem) 1.5rem;
}

.site-footer-grid {
    display: grid;
    grid-template-columns: 1.7fr 1fr 1fr 1.5fr;
    gap: clamp(1.5rem, 4vw, 3rem);
    padding-bottom: 2.5rem;
    border-bottom: 1px solid var(--site-rule);
}

@media (max-width: 880px) {
    .site-footer-grid {
        grid-template-columns: 1fr 1fr;
    }
    .site-footer-brand,
    .site-footer-newsletter {
        grid-column: 1 / -1;
    }
}

@media (max-width: 480px) {
    .site-footer-grid {
        grid-template-columns: 1fr;
    }
}

.site-footer-brand {
    max-width: 360px;
}

.site-footer-logo {
    display: inline-block;
    margin-bottom: 1rem;
}

.site-footer-logo img {
    height: 36px;
    width: auto;
}

.site-footer-tagline {
    color: var(--site-ink-soft);
    font-size: 0.92rem;
    line-height: 1.55;
    margin: 0 0 1.25rem;
}

.site-footer-social {
    display: flex;
    gap: 0.5rem;
}

.site-footer-social a {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border-radius: 999px;
    border: 1px solid var(--site-rule);
    color: var(--site-ink-soft);
    background: var(--site-paper);
    transition: all 0.15s ease;
    text-decoration: none;
}

.site-footer-social a:hover {
    color: #fff;
    background: var(--site-ink);
    border-color: var(--site-ink);
    transform: translateY(-2px);
}

.site-footer-title {
    font-size: 0.74rem;
    font-weight: 600;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--site-ink);
    margin: 0 0 1.1rem;
}

.site-footer-col ul {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: 0.6rem;
}

.site-footer-col a {
    color: var(--site-ink-soft);
    text-decoration: none;
    font-size: 0.92rem;
    transition: color 0.15s ease;
}

.site-footer-col a:hover {
    color: var(--site-ink);
}

/* Newsletter */
.site-footer-newsletter-body {
    color: var(--site-ink-soft);
    font-size: 0.92rem;
    line-height: 1.55;
    margin: 0 0 1rem;
}

.site-footer-newsletter-form {
    display: flex;
    align-items: center;
    background: var(--site-paper);
    border: 1px solid var(--site-rule-strong);
    border-radius: 999px;
    padding: 4px 4px 4px 1rem;
    transition: border-color 0.15s ease, box-shadow 0.15s ease;
    max-width: 360px;
}

.site-footer-newsletter-form:focus-within {
    border-color: var(--site-accent);
    box-shadow: 0 0 0 3px var(--site-accent-soft);
}

.site-footer-newsletter-form input {
    flex: 1;
    border: 0;
    background: transparent;
    color: var(--site-ink);
    font-size: 0.9rem;
    padding: 0.55rem 0;
    outline: none;
    min-width: 0;
}

.site-footer-newsletter-form input::placeholder {
    color: var(--site-ink-mute);
}

.site-footer-newsletter-form button {
    border: 0;
    background: var(--site-ink);
    color: var(--site-paper);
    padding: 0.55rem 1.05rem;
    border-radius: 999px;
    font-size: 0.85rem;
    font-weight: 500;
    cursor: pointer;
    transition: background 0.15s ease;
    white-space: nowrap;
}

.site-footer-newsletter-form button:hover {
    background: var(--site-accent);
    color: #fff;
}

/* Bottom bar */
.site-footer-bottom {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 1rem;
    padding-top: 1.5rem;
    font-size: 0.84rem;
    color: var(--site-ink-mute);
}

.site-footer-bottom p {
    margin: 0;
}

.site-footer-meta {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    gap: 1.25rem;
}

.site-footer-meta a {
    color: var(--site-ink-mute);
    text-decoration: none;
    transition: color 0.15s ease;
}

.site-footer-meta a:hover {
    color: var(--site-ink);
}