/*
Theme Name: Arthaus
Description: A minimal art gallery theme
Version: 1.0
Author: Arthaus
*/

/* ── Variables ──────────────────────────────────────────── */
:root {
    --white: #ffffff;
    --off-white: #f8f8f6;
    --black: #111110;
    --gray-100: #f0f0ee;
    --gray-300: #d0d0cc;
    --gray-500: #888884;
    --gray-700: #444440;
    --accent: #111110;
    --nav-h: 56px;
    --font-display: 'DM Sans', 'Helvetica Neue', sans-serif;
    --font-ui: 'DM Sans', 'Helvetica Neue', sans-serif;
    --font-mono: 'DM Sans', 'Helvetica Neue', sans-serif;
    --ease: cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

/* ── Reset ──────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 16px; -webkit-font-smoothing: antialiased; }
body { background: var(--white); color: var(--black); font-family: var(--font-ui); cursor: crosshair; overflow-x: hidden; }
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; height: auto; }
ul { list-style: none; }

/* ── Google Fonts loaded via functions.php ──────────────── */

/* ── Navigation ─────────────────────────────────────────── */
.site-header {
    position: relative;
    background: var(--white);
    height: auto;
    display: grid;
    grid-template-columns: auto 1fr auto;
    align-items: start;
    padding: 24px 32px;
    gap: 0;
}

.site-logo {
    display: block;
    line-height: 0;
}

.logo-img {
    width: auto;
    height: 48px;
    display: block;
    object-fit: contain;
}

.site-tagline {
    font-family: var(--font-ui);
    font-size: 11px;
    color: #444440;
    line-height: 1.6;
    max-width: 580px;
    margin-left: 150px;
    padding-right: 40px;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 0;
}

.nav-menu ul {
    display: flex;
    align-items: center;
    gap: 2px;
}

.nav-menu a {
    font-family: var(--font-ui);
    font-size: 12px;
    color: var(--gray-700);
    padding: 6px 14px;
    border-radius: 2px;
    transition: background 0.15s ease, color 0.15s ease;
    letter-spacing: 0.01em;
}

.nav-menu a:hover { background: var(--gray-100); color: var(--black); }

.nav-cta {
    display: inline-flex;
    align-items: center;
    font-family: var(--font-ui);
    font-size: 12px;
    font-weight: 500;
    color: var(--white);
    background: var(--black);
    padding: 7px 16px;
    border-radius: 3px;
    margin-left: 10px;
    letter-spacing: 0.02em;
    transition: opacity 0.15s ease;
}
.nav-cta:hover { opacity: 0.75; }

/* ── Image Grid ─────────────────────────────────────────── */
.grid-wrap {
    padding: 0 30px 0;
    min-height: calc(100vh - var(--nav-h));
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    padding-top: 25vh;
}

.masonry-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 10px;
    align-items: end;
    min-height: 1px;
}

/* Ensure month-breaker always spans full width even when dynamically inserted */
.masonry-grid > .month-breaker {
    grid-column: 1 / -1 !important;
}

/* Month breaker — spans full grid width */
.month-breaker {
    grid-column: 1 / -1;
    padding: 10px 30px;
    display: flex;
    align-items: center;
    position: sticky;
    top: 0;
    background: var(--white);
    z-index: 50;
    margin: 20px -30px 0;
}

.month-breaker:first-child {
    margin-top: 0;
}

.month-label {
    font-family: var(--font-ui);
    font-size: 11px;
    font-weight: 500;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--gray-500);
}

.grid-item {
    display: block;
    position: relative;
    background: transparent;
    align-self: end;
}

.grid-item-meta {
    padding: 30px 0 6px 0;
}

.grid-item-title {
    font-family: var(--font-ui);
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 0.02em;
    color: var(--black);
    line-height: 1.4;
}

.grid-item-date {
    font-family: var(--font-ui);
    font-size: 10px;
    color: var(--gray-500);
    margin-top: 2px;
    letter-spacing: 0.02em;
}

.grid-item-image {
    width: 100%;
    overflow: hidden;
    position: relative;
    line-height: 0;
}

.grid-item-image img {
    width: 100%;
    height: auto;
    display: block;
    transition: transform 0.6s var(--ease);
}

.grid-item:hover .grid-item-image img {
    transform: scale(1.04);
}

/* ── Empty state ─────────────────────────────────────────── */
.empty-state {
    grid-column: 1/-1;
    padding: 120px 24px;
    text-align: center;
}
.empty-state p {
    font-family: var(--font-display);
    font-size: 28px;
    font-style: italic;
    color: var(--gray-500);
}

/* ── Load more ───────────────────────────────────────────── */
.load-more-wrap {
    padding: 40px 24px;
    display: flex;
    justify-content: center;
}

.load-more-btn {
    font-family: var(--font-mono);
    font-size: 10px;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--gray-700);
    border: 1px solid var(--gray-300);
    background: none;
    padding: 12px 32px;
    cursor: crosshair;
    transition: border-color 0.2s ease, color 0.2s ease, background 0.2s ease;
}
.load-more-btn:hover {
    background: var(--black);
    color: var(--white);
    border-color: var(--black);
}

.hidden { display: none !important; }

/* ── Single Post ─────────────────────────────────────────── */
.single-wrap {
    display: block;
    min-height: calc(100vh - var(--nav-h));
}

.single-image-panel {
    background: var(--white);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 32px;
}

.single-image-panel .single-title {
    text-align: center;
    margin-bottom: 16px;
}

.single-image-panel img {
    max-width: 100%;
    max-height: 1024px;
    width: auto;
    height: auto;
    object-fit: unset;
}

.single-title {
    font-family: var(--font-ui);
    font-size: clamp(22px, 3vw, 36px);
    font-weight: 600;
    line-height: 1.2;
}

.single-label {
    font-family: var(--font-ui);
    font-size: 9px;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    color: var(--gray-500);
}

.single-body {
    font-family: var(--font-ui);
    font-size: 14px;
    line-height: 1.75;
    color: var(--gray-700);
    flex: 1;
}

.single-back {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-family: var(--font-ui);
    font-size: 9px;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--gray-500);
    border-top: 1px solid var(--gray-100);
    padding-top: 20px;
    transition: color 0.15s ease;
}
.single-back:hover { color: var(--black); }

.single-info-panel {
    padding: 40px 32px;
    display: flex;
    flex-direction: column;
    gap: 24px;
    border-left: 1px solid var(--gray-100);
}

.single-label {
    font-family: var(--font-ui);
    font-size: 9px;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    color: var(--gray-500);
}

.single-title {
    font-family: var(--font-ui);
    font-size: clamp(22px, 3vw, 36px);
    font-weight: 600;
    line-height: 1.2;
}

.single-body {
    font-family: var(--font-ui);
    font-size: 14px;
    line-height: 1.75;
    color: var(--gray-700);
    flex: 1;
}

.single-back {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-family: var(--font-ui);
    font-size: 9px;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--gray-500);
    border-top: 1px solid var(--gray-100);
    padding-top: 20px;
    transition: color 0.15s ease;
}
.single-back:hover { color: var(--black); }

/* ── 404 ─────────────────────────────────────────────────── */
.not-found {
    min-height: calc(100vh - var(--nav-h));
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 16px;
    text-align: center;
}
.not-found h1 {
    font-family: var(--font-display);
    font-size: clamp(80px, 15vw, 180px);
    font-weight: 400;
    font-style: italic;
    line-height: 0.9;
    color: var(--gray-300);
}
.not-found p {
    font-family: var(--font-mono);
    font-size: 10px;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--gray-500);
}
.not-found a {
    font-family: var(--font-mono);
    font-size: 10px;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--black);
    border-bottom: 1px solid var(--black);
    padding-bottom: 2px;
}

/* ── Footer ──────────────────────────────────────────────── */
.site-footer {
    border-top: 1px solid var(--gray-100);
    padding: 24px 32px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}
.footer-logo {
    font-family: var(--font-display);
    font-size: 16px;
    font-style: italic;
    color: var(--gray-500);
}
.footer-copy {
    font-family: var(--font-mono);
    font-size: 9px;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--gray-500);
}

/* ── Fade-in animation ───────────────────────────────────── */
.grid-item {
    opacity: 0;
    transform: translateY(12px);
    animation: fadeUp 0.5s var(--ease) forwards;
}

@keyframes fadeUp {
    to { opacity: 1; transform: none; }
}

/* Stagger per item */
.grid-item:nth-child(1)  { animation-delay: 0.04s; }
.grid-item:nth-child(2)  { animation-delay: 0.08s; }
.grid-item:nth-child(3)  { animation-delay: 0.12s; }
.grid-item:nth-child(4)  { animation-delay: 0.16s; }
.grid-item:nth-child(5)  { animation-delay: 0.20s; }
.grid-item:nth-child(6)  { animation-delay: 0.10s; }
.grid-item:nth-child(7)  { animation-delay: 0.14s; }
.grid-item:nth-child(8)  { animation-delay: 0.18s; }
.grid-item:nth-child(9)  { animation-delay: 0.22s; }
.grid-item:nth-child(10) { animation-delay: 0.26s; }
.grid-item:nth-child(n+11) { animation-delay: 0.28s; }

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

/* Tablet: 3 columns */
@media (max-width: 1024px) {
    .masonry-grid { grid-template-columns: repeat(3, 1fr); }
}

/* Mobile: full overhaul */
@media (max-width: 680px) {

    /* Header: logo top-left, nav toggle top-right, bio below spanning full width */
    .site-header {
        grid-template-columns: 1fr auto;
        grid-template-rows: auto auto;
        padding: 16px 20px;
        gap: 0;
        position: relative;
    }

    .site-logo {
        font-size: 18px;
        grid-column: 1;
        grid-row: 1;
    }

    .site-tagline {
        grid-column: 1 / -1;
        grid-row: 2;
        display: block;
        margin-left: 0;
        max-width: 100%;
        padding: 12px 0 4px;
        font-size: 14px;
        line-height: 1.6;
    }

    /* Date nav collapses to a toggle */
    .date-nav {
        grid-column: 2;
        grid-row: 1;
        align-items: flex-end;
        position: relative;
    }

    .date-nav::before {
        content: 'Archive';
        font-family: var(--font-ui);
        font-size: 11px;
        font-weight: 600;
        letter-spacing: 0.08em;
        color: var(--black);
        cursor: pointer;
        display: block;
        text-align: right;
    }

    .date-nav-year { display: none; }

    .date-nav.mobile-open .date-nav-year { display: flex; }

    .date-nav.mobile-open {
        position: absolute;
        top: 48px;
        right: 20px;
        background: var(--white);
        border: 1px solid var(--gray-100);
        padding: 16px 20px;
        z-index: 200;
        min-width: 140px;
        box-shadow: 0 8px 24px rgba(0,0,0,0.08);
    }

    /* Grid: 2 columns */
    .masonry-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 6px;
    }

    .grid-wrap {
        padding: 0 12px 60px;
        padding-top: 15vh;
    }

    .month-breaker {
        padding: 28px 0 8px;
    }

    .grid-item-title { font-size: 10px; }
    .grid-item-date  { font-size: 9px; }
    .grid-item-meta  { padding: 16px 0 4px; }
}

/* ── Date Nav ────────────────────────────────────────────── */
.date-nav {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    gap: 4px;
    min-width: 100px;
}

.date-nav-year {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
}

.date-nav-year-btn {
    font-family: var(--font-ui);
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.08em;
    color: var(--black);
    background: none;
    border: none;
    cursor: pointer;
    padding: 2px 0;
    text-align: right;
    transition: opacity 0.15s ease;
}

.date-nav-year-btn:hover { opacity: 0.5; }

.date-nav-months {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    gap: 2px;
    overflow: hidden;
    max-height: 0;
    transition: max-height 0.3s ease;
}

.date-nav-months.open {
    max-height: 400px;
}

.date-nav-month {
    font-family: var(--font-ui);
    font-size: 10px;
    color: var(--gray-500);
    padding: 1px 0;
    text-align: right;
    transition: color 0.15s ease;
}

.date-nav-month:hover { color: var(--black); }

.date-nav-month.active { color: var(--black); font-weight: 500; }

/* Mobile archive toggle button */
.date-nav-mobile-btn {
    display: none;
}

@media (max-width: 680px) {
    .date-nav-mobile-btn {
        display: block;
        font-family: var(--font-ui);
        font-size: 11px;
        font-weight: 600;
        letter-spacing: 0.08em;
        color: var(--black);
        background: none;
        border: none;
        cursor: pointer;
        padding: 4px 0;
        text-align: right;
    }

    /* Remove the ::before pseudo now that we have a real button */
    .date-nav::before { display: none; }
}



/* ── Related Posts Module ────────────────────────────────── */
.related-posts {
    padding: 48px 30px 80px;
}

.related-posts-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 10px;
    align-items: end;
}

.related-post-item {
    display: block;
    text-decoration: none;
}

.related-post-meta {
    padding: 30px 0 6px;
}

.related-post-title {
    font-family: var(--font-ui);
    font-size: 11px;
    font-weight: 500;
    color: var(--black);
    line-height: 1.4;
}

.related-post-date {
    font-family: var(--font-ui);
    font-size: 10px;
    color: var(--gray-500);
    margin-top: 2px;
}

.related-post-image {
    width: 100%;
    overflow: hidden;
    line-height: 0;
}

.related-post-image img {
    width: 100%;
    height: auto;
    display: block;
    transition: transform 0.6s var(--ease);
}

.related-post-item:hover .related-post-image img {
    transform: scale(1.04);
}

@media (max-width: 680px) {
    .related-posts { padding: 32px 12px 60px; }
    .related-posts-grid { grid-template-columns: repeat(2, 1fr); gap: 6px; }
}

/* ── Page Transitions ────────────────────────────────────── */
/* Opacity controlled by transitions.js */
::view-transition-old(root),
::view-transition-new(root) {
    animation: none;
}

/* ── Lazy load sentinel ──────────────────────────────────── */
.load-sentinel {
    width: 100%;
    height: 80px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.load-sentinel.is-loading::after {
    content: '';
    width: 16px;
    height: 16px;
    border: 2px solid var(--gray-300);
    border-top-color: var(--black);
    border-radius: 50%;
    animation: spin 0.7s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}