/**
 * Film Roll Component
 *
 * A self-contained film strip component for displaying horizontal scrolling thumbnails.
 * Can be imported into any page that needs a film roll interface.
 *
 * Usage:
 *   <div class="film-roll" id="film-roll">
 *     <img src="..." alt="...">
 *   </div>
 *
 * Dependencies:
 *   - base.css (for CSS custom properties)
 *
 * Optional:
 *   - film-roll.js for interactivity (click to select, horizontal scroll)
 */

/* ==========================================================================
   Film Roll Container
   ========================================================================== */

.film-roll {
    overflow-x: auto;
    overflow-y: hidden;
    white-space: nowrap;
    padding: 16px 20px;
    background-color: var(--color-bg-medium, #0f0f11);
    border-bottom: 1px solid var(--color-border, #1a1a1d);
    user-select: none;
    -webkit-font-smoothing: antialiased;
}

/* ==========================================================================
   Film Roll Thumbnails
   ========================================================================== */

.film-roll img {
    display: inline-block;
    width: 140px;
    height: 140px;
    object-fit: cover;
    cursor: pointer;
    border: 2px solid var(--color-border-light, #1f1f22);
    border-radius: var(--radius-lg, 8px);
    transition: all var(--transition-fast, 0.15s) ease;
    margin-right: 12px;
    filter: grayscale(20%);
}

.film-roll img:last-child {
    margin-right: 0;
}

.film-roll img:hover {
    border-color: var(--color-border-accent, #3c2a5e);
    filter: grayscale(0%);
}

.film-roll img.active {
    border-color: var(--color-accent, #a78bfa);
    filter: grayscale(0%);
    box-shadow: 0 0 12px rgba(var(--color-accent-rgb, 139, 92, 246), 0.25);
}

/* ==========================================================================
   Film Roll Custom Scrollbar
   ========================================================================== */

.film-roll::-webkit-scrollbar {
    height: 6px;
}

.film-roll::-webkit-scrollbar-track {
    background: var(--color-bg-medium, #0f0f11);
}

.film-roll::-webkit-scrollbar-thumb {
    background: var(--color-border-light, #1f1f22);
    border-radius: 3px;
}

.film-roll::-webkit-scrollbar-thumb:hover {
    background: var(--color-border-accent, #3c2a5e);
}

/* ==========================================================================
   Film Roll Pagination (thin variant)
   ========================================================================== */

.film-roll-pagination {
    background-color: var(--color-bg-medium, #0f0f11);
    border-bottom: 1px solid var(--color-border, #1a1a1d);
}

.film-roll-pagination .pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 20px;
    padding: 8px 24px;
    min-height: 36px;
}

.film-roll-pagination .pagination .pagination-btn {
    padding: 6px 16px;
    background-color: transparent;
    color: var(--color-text-muted, #666);
    text-decoration: none;
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    border: 1px solid transparent;
    transition: all var(--transition-fast, 0.15s);
}

.film-roll-pagination .pagination .pagination-btn:hover {
    color: var(--color-accent, #a78bfa);
    border-color: var(--color-border-accent, #3c2a5e);
}

.film-roll-pagination .pagination .roll-info {
    color: var(--color-accent, #a78bfa);
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    font-weight: 500;
    min-width: 80px;
    text-align: center;
}

/* ==========================================================================
   Film Roll Cart Indicators
   ========================================================================== */

.film-roll img.in-cart {
    border-color: var(--color-accent);
    box-shadow: 0 0 8px rgba(167, 139, 250, 0.3);
}