/* layout.css — site-wide structural layout.
 * Colors come from colors.css. Do not add hex values here.
 */

/* ── Container ────────────────────────────────────────────────────────────── */
.container {
    width: 100%;
    max-width: var(--container-max);
    margin-inline: auto;
    padding-inline: var(--space-6);
}

/* ── Generic sections ─────────────────────────────────────────────────────── */
.section {
    padding-block: var(--space-16);
}

/* ═══════════════════════════════════════════════════════════════════════════
   FLOATING PILL NAVIGATION
   ═══════════════════════════════════════════════════════════════════════════ */

/*
 * The header is sticky and transparent. The page background shows through on
 * both sides of the pill, creating the "floating" visual effect.
 */
.site-header {
    position: sticky;
    top: 0;
    z-index: 200;
    /* Matches page background — makes the header invisible outside the pill */
    background-color: var(--color-light);
    padding-block: 12px;
}

/* Full-width wrapper inside the header — constrains pill width */
.nav-container {
    width: 100%;
    max-width: var(--container-max);
    margin-inline: auto;
    padding-inline: var(--space-6);
    position: relative; /* anchor for mobile-nav dropdown */
}

/* ── The pill itself ──────────────────────────────────────────────────────── */
.nav-pill {
    display: grid;
    /* Three equal columns: left links | brand | right links */
    grid-template-columns: 1fr auto 1fr;
    align-items: center;
    background-color: var(--color-nav-bg);
    border-radius: var(--radius-pill);
    padding: 6px 8px;
    gap: var(--space-4);
}

/* ── Nav groups (left + right) ────────────────────────────────────────────── */
.nav-group {
    display: flex;
    align-items: center;
    gap: 2px;
}

.nav-group--left  { justify-content: flex-start; }
.nav-group--right { justify-content: flex-end; }

/* ── Individual nav links inside the pill ─────────────────────────────────── */
.nav-link {
    display: block;
    padding: 7px 14px;
    border-radius: var(--radius-pill);
    text-decoration: none;
    color: var(--color-nav-text-dim);
    font-size: 0.9375rem;
    font-weight: 500;
    white-space: nowrap;
    transition: color 0.18s, background-color 0.18s;
}

.nav-link:hover {
    color: var(--color-nav-text);
    background-color: var(--color-nav-hover-bg);
}

.nav-link.is-active {
    color: var(--color-nav-active);
    background-color: var(--color-nav-hover-bg);
}

/* ── Brand centre ─────────────────────────────────────────────────────────── */
.nav-brand {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    text-decoration: none;
    padding: 4px 16px;
    border-radius: var(--radius-pill);
    transition: background-color 0.18s;
    white-space: nowrap;
}

.nav-brand:hover {
    background-color: var(--color-nav-hover-bg);
}

/* Logo image */
.nav-brand-logo {
    display: block;
    height: 44px;
    width: auto;
}

/* ── Mobile hamburger (hidden on desktop) ─────────────────────────────────── */
.nav-toggle {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    background: none;
    border: none;
    padding: var(--space-2) var(--space-3);
    cursor: pointer;
    border-radius: var(--radius);
    margin-left: auto; /* pushes to the far right inside the pill on mobile */
    /* On mobile the pill becomes a 2-col layout (brand | toggle),
       so we take this out of the grid flow */
}

.nav-toggle-bar {
    display: block;
    width: 20px;
    height: 2px;
    background-color: var(--color-nav-text);
    border-radius: 2px;
    transition: transform 0.22s, opacity 0.22s;
}

/* Animated X when open */
.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}
.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(2) {
    opacity: 0;
}
.nav-toggle[aria-expanded="true"] .nav-toggle-bar:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}

/* ── Mobile dropdown menu ─────────────────────────────────────────────────── */
.mobile-nav {
    background-color: var(--color-nav-bg);
    border-radius: var(--radius-lg);
    margin-top: var(--space-2);
    padding: var(--space-3);
    display: flex;
    flex-direction: column;
    gap: 2px;
}

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

.mobile-nav-link {
    display: block;
    padding: 10px 16px;
    border-radius: var(--radius);
    text-decoration: none;
    color: var(--color-nav-text-dim);
    font-size: 1rem;
    font-weight: 500;
    transition: color 0.15s, background-color 0.15s;
}

.mobile-nav-link:hover {
    color: var(--color-nav-text);
    background-color: var(--color-nav-hover-bg);
}

.mobile-nav-link.is-active {
    color: var(--color-nav-active);
    background-color: var(--color-nav-hover-bg);
}

/* ═══════════════════════════════════════════════════════════════════════════
   SITE MAIN + FOOTER
   ═══════════════════════════════════════════════════════════════════════════ */

.site-main {
    min-height: calc(100vh - var(--nav-height));
}

/* ── Footer ───────────────────────────────────────────────────────────────── */
.site-footer {
    background-color: var(--color-bg-section);
    border-top: 1px solid var(--color-border);
}

.footer-inner {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: var(--space-8);
    padding-block: var(--space-12);
}

.footer-logo-link {
    display: inline-block;
    margin-bottom: var(--space-2);
}

.footer-logo-img {
    display: block;
    height: 120px;
    width: auto;
}

.footer-tagline {
    font-size: 1rem;
    color: var(--color-text-muted);
    margin-bottom: 0;
}

.footer-nav-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
}

.footer-nav-list a {
    color: var(--color-text-muted);
    text-decoration: none;
    font-size: 1rem;
    transition: color 0.15s;
}

.footer-nav-list a:hover {
    color: var(--color-primary);
}

.footer-bottom {
    background-color: var(--color-border);
    padding-block: var(--space-4);
}

.footer-bottom p {
    font-size: 0.9375rem;
    color: var(--color-text-muted);
    margin-bottom: 0;
    text-align: center;
}

.footer-bottom p + p {
    margin-top: var(--space-2);
}

.footer-credit-link {
    color: var(--color-text-muted);
    text-decoration: none;
    transition: color 0.15s;
}

.footer-credit-link:hover {
    color: var(--color-primary);
}

/* ── Blog grid ────────────────────────────────────────────────────────────── */
.post-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: var(--space-8);
    margin-bottom: var(--space-12);
}

/* ── Pagination ───────────────────────────────────────────────────────────── */
.pagination {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-6);
    margin-top: var(--space-12);
}

.pagination-prev,
.pagination-next {
    font-weight: 600;
}

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

/* ── Admin layout ─────────────────────────────────────────────────────────── */
.admin-header {
    background-color: var(--color-dark);
    padding-block: var(--space-4);
    position: sticky;
    top: 0;
    z-index: 100;
}

.admin-header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.admin-logo {
    color: var(--color-white);
    text-decoration: none;
    font-weight: 700;
    font-size: 1rem;
}

.admin-nav {
    display: flex;
    align-items: center;
    gap: var(--space-4);
}

.admin-nav-link {
    color: var(--color-nav-text-dim);
    text-decoration: none;
    font-size: 1rem;
    transition: color 0.15s;
}

.admin-nav-link:hover {
    color: var(--color-white);
}

.admin-nav-link.is-active {
    color: var(--color-white);
    font-weight: 600;
}

.admin-main {
    padding-block: var(--space-12);
    min-height: calc(100vh - 4rem);
}

/* ── Responsive ───────────────────────────────────────────────────────────── */

/* Tablet: reduce section padding */
@media (max-width: 900px) {
    .section {
        padding-block: var(--space-12);
    }
}

@media (max-width: 768px) {

    /* Section padding tighter on mobile */
    .section {
        padding-block: var(--space-8);
    }

    /* Footer stacks vertically */
    .footer-inner {
        grid-template-columns: 1fr;
        gap: var(--space-6);
        text-align: center;
    }

    .footer-logo-link {
        display: block;
        text-align: center;
    }

    .footer-logo-img {
        margin-inline: auto;
        height: 80px;
    }

    .footer-nav-list {
        align-items: center;
    }

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

    /* ── Pill nav collapses to brand + toggle only ────────────────────────── */
    .nav-pill {
        display: flex;
        justify-content: space-between;
        align-items: center;
    }

    /* Hide the split left/right nav groups — links move to mobile-nav */
    .nav-group--left,
    .nav-group--right {
        display: none;
    }

    /* Show the hamburger toggle */
    .nav-toggle {
        display: flex;
    }

}

/* Small phones */
@media (max-width: 400px) {
    .container {
        padding-inline: var(--space-4);
    }

    .nav-brand-logo {
        height: 34px;
    }
}