/* ==========================================================================
   ART GALLERY DESIGN SYSTEM (White Base)
   Inspired by Minimalist Photography Portfolios
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Cormorant+Garamond:wght@300;400&family=Inter:wght@300;400&display=swap');

:root {
    --bg-color: #ffffff;
    --text-color: #1a1a1a;
    --accent-color: #888888;
    --card-bg: #f9f9f9;
    --transition: all 0.5s cubic-bezier(0.25, 1, 0.5, 1);
    --font-serif: 'Cormorant Garamond', serif;
    --font-sans: 'Inter', sans-serif;
    --gutter: 20px;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    -webkit-font-smoothing: antialiased;
}

body {
    background-color: var(--bg-color);
    color: var(--text-color);
    font-family: var(--font-sans);
    overflow-x: hidden;
    line-height: 1.6;
}

/* Header Section */
header {
    padding: 10rem 2rem 6rem;
    text-align: center;
}

h1 {
    font-family: var(--font-serif);
    font-size: clamp(2.5rem, 6vw, 4rem);
    font-weight: 300;
    letter-spacing: 0.1em;
    margin-bottom: 0.5rem;
    color: #000;
}

.subtitle {
    font-size: 0.8rem;
    letter-spacing: 0.4em;
    text-transform: uppercase;
    color: var(--accent-color);
}

/* Roulette Header Section */
.roulette-box {
    margin-top: 2.5rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1.5rem;
}

.discover-btn {
    background: none;
    border: 1px solid #ddd;
    padding: 12px 24px;
    font-size: 0.75rem;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--text-color);
    cursor: pointer;
    transition: var(--transition);
    border-radius: 50px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.discover-btn i {
    font-size: 0.8rem;
    color: var(--accent-color);
}

.discover-btn:hover {
    border-color: #000;
    background: #000;
    color: #fff;
}

.discover-btn:hover i {
    color: #fff;
}

.roulette-preview {
    width: 120px;
    height: 120px;
    border-radius: 50%;
    overflow: hidden;
    background: #f0f0f0;
    opacity: 0;
    transform: scale(0.8);
    transition: all 0.6s cubic-bezier(0.23, 1, 0.32, 1);
    cursor: pointer;
    box-shadow: 0 10px 30px rgba(0,0,0,0.05);
}

.roulette-preview.active {
    opacity: 1;
    transform: scale(1);
}

.roulette-preview img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.roulette-preview:hover {
    transform: scale(1.05);
}

/* Gallery Grid (Random Logic via Classes) */
.gallery-container {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
    grid-auto-rows: 10px; /* Base unit for masonry-like grid */
    grid-auto-flow: dense;
    gap: var(--gutter);
    padding: 0 var(--gutter) 10vh;
    max-width: 1600px;
    margin: 0 auto;
}

.photo-item {
    position: relative;
    background-color: var(--card-bg);
    opacity: 0;
    transform: translateY(30px);
    transition: var(--transition);
    display: flex;
    flex-direction: column;
}

.photo-item.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Random Size Classes (Assigned by JS) */
.photo-item.small { grid-row: span 25; grid-column: span 1; }
.photo-item.medium { grid-row: span 35; grid-column: span 1; }
.photo-item.large { grid-row: span 45; grid-column: span 2; }
.photo-item.wide { grid-row: span 30; grid-column: span 2; }
.photo-item.tall { grid-row: span 55; grid-column: span 1; }

.img-wrapper {
    width: 100%;
    height: 100%;
    overflow: hidden;
    background: #eee;
}

.photo-item img {
    width: 100%;
    height: 100%;
    object-fit: cover; /* Important for grid alignment */
    display: block;
    transition: transform 0.8s ease;
}

.photo-item:hover img {
    transform: scale(1.03);
}

/* Caption (Screenshot Style) */
.photo-caption {
    padding: 10px 0;
    font-size: 10px;
    letter-spacing: 1px;
    text-align: center;
    color: var(--accent-color);
    text-transform: uppercase;
}

/* Lightbox Styles (White Version) */
#lightbox {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.90); /* Perfect balance */
    z-index: 10000;
    display: none;
    justify-content: center;
    align-items: center;
    backdrop-filter: blur(8px); /* Subtle blur for depth */
}

#lightbox img {
    max-width: 90%;
    max-height: 85vh;
}

.close-btn {
    position: absolute;
    top: 20px;
    right: 30px;
    color: #fff; /* White close button */
    font-size: 40px;
    cursor: pointer;
    text-shadow: 0 0 10px rgba(0,0,0,0.5);
}

/* Responsive Customization */
@media (max-width: 768px) {
    .gallery-container {
        grid-template-columns: repeat(2, 1fr);
    }
    .photo-item.large, .photo-item.wide {
        grid-column: span 2;
    }
}