/* ─────────────────────────────────────────────
   cross-hatching.css
   Page-specific styles for /cross-hatching
   Depends on: core.css (tokens), navigation.css
   ───────────────────────────────────────────── */

/* ── Filter bar ── */

#filter-bar {
    position: sticky;
    top: 0;
    z-index: 50;
    background: var(--color-base);
    border-bottom: 1px solid rgba(75, 58, 140, 0.1);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-2) var(--space-4);
    gap: var(--space-2);
    flex-wrap: wrap;
}

#filter-left {
    display: flex;
    align-items: baseline;
    gap: var(--space-2);
}

#gallery-label {
    font-family: var(--font-display);
    font-size: var(--text-2xl);
    font-weight: 700;
    color: var(--color-ink);
    line-height: 1;
}

#drawing-count {
    font-size: var(--text-sm);
    color: var(--color-ink-muted);
}

#filter-right {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    flex-wrap: wrap;
}

/* Favourites toggle */
.filter-toggle {
    padding: 5px var(--space-2);
    border-radius: var(--radius-chip);
    border: 1.5px solid var(--color-ink-muted);
    background: transparent;
    color: var(--color-ink-muted);
    font-family: var(--font-body);
    font-size: var(--text-sm);
    font-weight: 500;
    cursor: pointer;
    transition: border-color var(--transition), color var(--transition), background var(--transition);
}

.filter-toggle[aria-pressed="true"] {
    border-color: var(--color-accent);
    color: var(--color-accent);
    background: rgba(75, 58, 140, 0.07);
}

.filter-toggle:hover {
    border-color: var(--color-accent);
    color: var(--color-accent);
}

/* Sort toggle */
.sort-toggle {
    display: flex;
    border-radius: var(--radius-chip);
    border: 1.5px solid rgba(75, 58, 140, 0.2);
    overflow: hidden;
}

.sort-btn {
    padding: 5px var(--space-2);
    border: none;
    background: transparent;
    color: var(--color-ink-muted);
    font-family: var(--font-body);
    font-size: var(--text-sm);
    font-weight: 500;
    cursor: pointer;
    transition: background var(--transition), color var(--transition);
}

.sort-btn.active {
    background: var(--color-accent);
    color: var(--color-base);
}

.sort-btn:not(.active):hover {
    background: rgba(75, 58, 140, 0.07);
    color: var(--color-accent);
}

/* ── Gallery grid ── */

#gallery {
    padding: var(--space-4);
    display: grid;
    /* fluid columns: each at least 220px, fill available space */
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: var(--space-3);
}

/* ── Grid card ── */

.drawing-card {
    position: relative;
    border-radius: var(--radius-card);
    overflow: hidden;
    cursor: pointer;
    background: var(--color-base-alt);
    border: 1.5px solid rgba(75, 58, 140, 0.1);
    aspect-ratio: 1 / 1;
    transition: transform var(--transition), box-shadow var(--transition);
}

.drawing-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 24px rgba(28, 24, 32, 0.12);
}

.drawing-card img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    transition: opacity var(--transition);
}

/* hover overlay */
.drawing-card-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(
        to top,
        rgba(28, 24, 32, 0.72) 0%,
        rgba(28, 24, 32, 0) 55%
    );
    opacity: 0;
    transition: opacity var(--transition);
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    padding: var(--space-2);
    gap: 2px;
}

.drawing-card:hover .drawing-card-overlay {
    opacity: 1;
}

.drawing-card-title {
    font-family: var(--font-display);
    font-size: var(--text-lg);
    font-weight: 600;
    color: #fff;
    line-height: 1.2;
}

.drawing-card-date {
    font-size: var(--text-xs);
    color: rgba(255, 255, 255, 0.65);
    letter-spacing: 0.06em;
}

/* favourite star badge */
.favourite-badge {
    position: absolute;
    top: var(--space-1);
    right: var(--space-1);
    font-size: 1rem;
    line-height: 1;
    opacity: 0.85;
    pointer-events: none;
}

/* ── Loading / sentinel ── */

#sentinel {
    height: 1px;
}

#loading {
    text-align: center;
    padding: var(--space-4);
    font-size: var(--text-sm);
    color: var(--color-ink-muted);
    min-height: 48px;
}

/* ── Empty state ── */

#empty-state {
    grid-column: 1 / -1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    padding: var(--space-8) var(--space-4);
    color: var(--color-ink-muted);
    font-family: var(--font-display);
    font-size: var(--text-xl);
    text-align: center;
}

/* ── Modal ── */

#modal {
    position: fixed;
    inset: 0;
    z-index: 200;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-4);
}

#modal[hidden] {
    display: none;
}

#modal-backdrop {
    position: absolute;
    inset: 0;
    background: rgba(28, 24, 32, 0.6);
    backdrop-filter: blur(4px);
    cursor: pointer;
}

#modal-content {
    position: relative;
    background: var(--color-base);
    border-radius: var(--radius-card);
    border: 1.5px solid rgba(75, 58, 140, 0.15);
    width: 100%;
    max-width: 860px;
    max-height: 90dvh;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    box-shadow: 0 24px 64px rgba(28, 24, 32, 0.2);
}

#modal-close {
    position: absolute;
    top: var(--space-2);
    right: var(--space-2);
    z-index: 10;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    border: 1.5px solid rgba(75, 58, 140, 0.2);
    background: var(--color-base);
    color: var(--color-ink-muted);
    font-size: var(--text-base);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background var(--transition), color var(--transition);
}

#modal-close:hover {
    background: var(--color-ink);
    color: var(--color-base);
    border-color: var(--color-ink);
}

#modal-body {
    display: grid;
    grid-template-columns: 1fr 1fr;
    overflow: hidden;
    flex: 1;
}

#modal-image-wrap {
    background: var(--color-base-alt);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    max-height: 85dvh;
}

#modal-image {
    width: 100%;
    height: 100%;
    object-fit: contain;
    display: block;
}

#modal-meta {
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
    padding: var(--space-4);
    overflow-y: auto;
    justify-content: space-between;
}

#modal-header {
    display: flex;
    flex-direction: column;
    gap: var(--space-1);
}

#modal-title {
    font-family: var(--font-display);
    font-size: var(--text-2xl);
    font-weight: 700;
    color: var(--color-ink);
    line-height: 1.1;
}

#modal-date {
    font-size: var(--text-sm);
    color: var(--color-ink-muted);
    letter-spacing: 0.06em;
}

#modal-comment {
    font-family: var(--font-display);
    font-size: var(--text-lg);
    color: var(--color-ink);
    line-height: 1.6;
    flex: 1;
}

#modal-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

#modal-favourite {
    font-size: var(--text-sm);
    color: var(--color-ink-muted);
    display: flex;
    align-items: center;
    gap: 6px;
}

#modal-nav {
    display: flex;
    gap: var(--space-1);
}

#modal-nav button {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    border: 1.5px solid rgba(75, 58, 140, 0.2);
    background: transparent;
    color: var(--color-ink);
    font-size: var(--text-lg);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background var(--transition), color var(--transition);
}

#modal-nav button:hover {
    background: var(--color-accent);
    color: var(--color-base);
    border-color: var(--color-accent);
}

#modal-nav button:disabled {
    opacity: 0.3;
    cursor: not-allowed;
}

/* ── Mobile ── */

@media (max-width: 600px) {
    #modal-body {
        grid-template-columns: 1fr;
        grid-template-rows: auto 1fr;
        overflow-y: auto;
    }

    #modal-image-wrap {
        max-height: 50dvh;
    }

    #gallery {
        grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
        gap: var(--space-2);
        padding: var(--space-2);
    }

    #filter-bar {
        padding: var(--space-2);
    }
}

@media (prefers-reduced-motion: reduce) {
    * { transition: none !important; }
}