/* ============================================================
   Photo Gallery Styles
   ============================================================ */

:root {
    --bg: #0a0a0a;
    --bg-secondary: #141414;
    --text: #e8e8e8;
    --text-muted: #888;
    --accent: #fff;
    --grid-gap: 6px;
    --header-height: 120px;
    --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--bg);
    color: var(--text);
    min-height: 100vh;
}

/* Header */
.gallery-header {
    text-align: center;
    padding: 3rem 2rem 2rem;
}

.gallery-header h1 {
    font-weight: 300;
    font-size: 2rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--accent);
    margin-bottom: 0.5rem;
}

.photo-count {
    font-size: 0.85rem;
    color: var(--text-muted);
    font-weight: 400;
    letter-spacing: 0.05em;
}

.gallery-controls {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1.5rem;
    margin-top: 0.5rem;
}

/* Name prompt */
.name-prompt {
    position: fixed;
    inset: 0;
    z-index: 2000;
    background: rgba(0,0,0,0.85);
    display: flex;
    align-items: center;
    justify-content: center;
}

.name-prompt.hidden {
    display: none;
}

.name-prompt-box {
    background: #1a1a1a;
    padding: 2rem;
    border-radius: 8px;
    text-align: center;
    max-width: 320px;
    width: 90%;
}

.name-prompt-box p {
    margin-bottom: 1rem;
    font-size: 0.95rem;
}

.name-prompt-box input {
    width: 100%;
    padding: 0.6rem 0.8rem;
    background: #0a0a0a;
    border: 1px solid #333;
    color: var(--text);
    font-family: inherit;
    font-size: 0.9rem;
    border-radius: 4px;
    margin-bottom: 1rem;
    outline: none;
}

.name-prompt-box input:focus {
    border-color: #666;
}

.name-prompt-box button {
    background: var(--accent);
    color: var(--bg);
    border: none;
    padding: 0.6rem 2rem;
    font-family: inherit;
    font-size: 0.85rem;
    letter-spacing: 0.05em;
    cursor: pointer;
    border-radius: 4px;
}

/* Filter button */
.filter-btn {
    background: transparent;
    color: var(--text-muted);
    border: 1px solid #333;
    padding: 0.4rem 1rem;
    font-family: inherit;
    font-size: 0.8rem;
    letter-spacing: 0.05em;
    cursor: pointer;
    transition: all var(--transition);
    border-radius: 3px;
    display: flex;
    align-items: center;
    gap: 0.3rem;
}

.filter-btn:hover {
    color: var(--text);
    border-color: #555;
}

.filter-btn.active {
    color: #ff4757;
    border-color: #ff4757;
}

.filter-btn .heart-icon {
    font-size: 1rem;
}

/* Heart on grid items */
.gallery-item .heart-btn {
    position: absolute;
    bottom: 8px;
    right: 8px;
    z-index: 10;
    background: rgba(0,0,0,0.5);
    border: none;
    color: #fff;
    font-size: 1.2rem;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity var(--transition), transform 0.2s ease;
    pointer-events: auto;
}

.gallery-item:hover .heart-btn,
.gallery-item .heart-btn.hearted {
    opacity: 1;
}

.gallery-item .heart-btn.hearted {
    color: #ff4757;
}

.gallery-item .heart-btn:hover {
    transform: scale(1.15);
}

/* Heart in lightbox */
.lightbox-heart {
    background: transparent;
    border: 1px solid #333;
    color: var(--text-muted);
    font-size: 1rem;
    padding: 0.3rem 0.8rem;
    cursor: pointer;
    transition: all var(--transition);
    border-radius: 3px;
    display: flex;
    align-items: center;
    gap: 0.3rem;
}

.lightbox-heart:hover {
    color: var(--text);
    border-color: #555;
}

.lightbox-heart.hearted {
    color: #ff4757;
    border-color: #ff4757;
}

.lightbox-heart .heart-icon {
    font-size: 1.1rem;
}

/* Share toast */
.share-toast {
    position: fixed;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%) translateY(100px);
    background: #1a1a1a;
    color: #e8e8e8;
    padding: 0.8rem 1.5rem;
    border-radius: 6px;
    border: 1px solid #333;
    font-size: 0.85rem;
    z-index: 3000;
    opacity: 0;
    transition: transform 0.3s ease, opacity 0.3s ease;
    pointer-events: none;
}

.share-toast.visible {
    transform: translateX(-50%) translateY(0);
    opacity: 1;
}

/* Hidden items when filtering */
.gallery-item.hidden-by-filter {
    display: none;
}

/* Grid */
.gallery-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--grid-gap);
    padding: 0 var(--grid-gap);
    max-width: 1800px;
    margin: 0 auto;
}

.gallery-item {
    position: relative;
    overflow: hidden;
    cursor: pointer;
    aspect-ratio: 1 / 1;
    background: var(--bg-secondary);
}

.gallery-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition), opacity 0.5s ease;
    opacity: 0;
}

.gallery-item img.loaded {
    opacity: 1;
}

.gallery-item:hover img {
    transform: scale(1.05);
}

.gallery-item::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(0,0,0,0.3) 0%, transparent 50%);
    opacity: 0;
    transition: opacity var(--transition);
    pointer-events: none;
}

.gallery-item:hover::after {
    opacity: 1;
}

/* Load More */
.load-more-container {
    text-align: center;
    padding: 3rem 1rem;
}

.load-more-btn {
    background: transparent;
    color: var(--text);
    border: 1px solid #333;
    padding: 0.8rem 3rem;
    font-family: inherit;
    font-size: 0.85rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    cursor: pointer;
    transition: all var(--transition);
}

.load-more-btn:hover {
    background: var(--accent);
    color: var(--bg);
    border-color: var(--accent);
}

.load-more-btn.hidden {
    display: none;
}

.load-progress {
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-top: 1rem;
}

/* Lightbox */
.lightbox {
    position: fixed;
    inset: 0;
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease, visibility 0.3s ease;
}

.lightbox.active {
    opacity: 1;
    visibility: visible;
}

.lightbox-backdrop {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.95);
}

.lightbox-content {
    position: relative;
    max-width: 95vw;
    max-height: 90vh;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.lightbox-img {
    max-width: 95vw;
    max-height: 85vh;
    object-fit: contain;
    transition: opacity 0.3s ease;
}

.lightbox-info {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
    padding: 1rem 0;
    font-size: 0.85rem;
    color: var(--text-muted);
}

.lightbox-name {
    font-weight: 400;
}

.lightbox-counter {
    font-variant-numeric: tabular-nums;
}

.lightbox-actions {
    display: flex;
    gap: 1rem;
    align-items: center;
}

.lightbox-download {
    color: var(--text-muted);
    text-decoration: none;
    font-size: 0.85rem;
    padding: 0.3rem 0.8rem;
    border: 1px solid #333;
    border-radius: 3px;
    transition: all var(--transition);
    letter-spacing: 0.03em;
}

.lightbox-download:hover {
    color: var(--accent);
    border-color: var(--accent);
}

.lightbox-close {
    position: absolute;
    top: 1.5rem;
    right: 1.5rem;
    z-index: 1001;
    background: none;
    border: none;
    color: var(--text);
    font-size: 2rem;
    cursor: pointer;
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: opacity var(--transition);
    opacity: 0.7;
}

.lightbox-close:hover {
    opacity: 1;
}

.lightbox-nav {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    z-index: 1001;
    background: none;
    border: none;
    color: var(--text);
    font-size: 3rem;
    cursor: pointer;
    width: 60px;
    height: 80px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: opacity var(--transition);
    opacity: 0.5;
}

.lightbox-nav:hover {
    opacity: 1;
}

.lightbox-prev {
    left: 1rem;
}

.lightbox-next {
    right: 1rem;
}

/* Footer */
.gallery-footer {
    text-align: center;
    padding: 3rem 1rem;
    font-size: 0.8rem;
    color: var(--text-muted);
    border-top: 1px solid #1a1a1a;
    margin-top: 2rem;
}

/* Responsive */
@media (max-width: 1200px) {
    .gallery-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (max-width: 768px) {
    .gallery-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .gallery-header h1 {
        font-size: 1.4rem;
    }

    .lightbox-nav {
        font-size: 2rem;
        width: 44px;
    }

    .lightbox-prev {
        left: 0.5rem;
    }

    .lightbox-next {
        right: 0.5rem;
    }
}

@media (max-width: 480px) {
    .gallery-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 3px;
        padding: 0 3px;
    }
}