:root {
    --bg-canvas: #FFFFFF;
    --bg-card: #F9FAFB;
    --bg-stage: #F1F5F9;
    --navy-primary: #0A192F;
    --navy-light: #1E293B;
    --gilt-accent: #C5A880;
    --text-dark: #0F172A;
    --text-muted: #64748B;
    --border: #E2E8F0;
    --font-serif: 'Cinzel', Georgia, serif;
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
body { font-family: var(--font-sans); background-color: var(--bg-canvas); color: var(--text-dark); line-height: 1.6; }

/* Shipping Banner */
.shipping-banner {
    background-color: var(--navy-primary);
    color: #FFFFFF;
    text-align: center;
    padding: 0.55rem 1rem;
    font-size: 0.85rem;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    font-weight: 500;
}

/* Global Header */
header.site-header {
    border-bottom: 1px solid var(--border);
    padding: 1.25rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: #FFFFFF;
    position: sticky;
    top: 0;
    z-index: 50;
}
.brand {
    font-family: var(--font-serif);
    font-size: 1.75rem;
    letter-spacing: 0.12em;
    color: var(--navy-primary);
    text-decoration: none;
    font-weight: 700;
}
.brand span { color: var(--gilt-accent); }
.nav-links a {
    margin-left: 2rem;
    color: var(--navy-light);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.95rem;
    transition: color 0.2s;
}
.nav-links a:hover { color: var(--gilt-accent); }

/* Layout Container */
.container {
    max-width: 1200px;
    margin: 2.5rem auto;
    padding: 0 1.5rem;
}

/* Gallery Grid & Card Stages */
.gallery-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 2rem;
}
.art-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 4px;
    overflow: hidden;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}
.art-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 10px 24px rgba(10, 25, 47, 0.08);
}
.card-stage {
    height: 320px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--bg-stage);
    border-bottom: 1px solid var(--border);
    padding: 1.25rem;
    overflow: hidden;
}
.card-stage img {
    max-width: 100%;
    max-height: 100%;
    width: auto;
    height: auto;
    object-fit: contain;
    box-shadow: 0 4px 14px rgba(10, 25, 47, 0.1);
    transition: transform 0.25s ease;
}
.art-card:hover .card-stage img { transform: scale(1.03); }
.card-body { padding: 1.25rem; }
.card-body h3 {
    font-family: var(--font-serif);
    font-size: 1.1rem;
    color: var(--navy-primary);
    margin-bottom: 0.35rem;
    line-height: 1.3;
}
.artist-tag {
    color: var(--gilt-accent);
    font-size: 0.85rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 0.6rem;
    display: block;
}

/* Product Detail Stage */
.product-grid {
    display: grid;
    grid-template-columns: 1.15fr 0.85fr;
    gap: 3.5rem;
    align-items: start;
}
@media (max-width: 860px) {
    .product-grid { grid-template-columns: 1fr; gap: 2rem; }
}
.image-stage {
    background: var(--bg-stage);
    border: 1px solid var(--border);
    padding: 2.5rem 1.5rem;
    border-radius: 4px;
    text-align: center;
    min-height: 480px;
    display: flex;
    align-items: center;
    justify-content: center;
}
.image-stage img {
    max-width: 100%;
    max-height: 520px;
    width: auto;
    height: auto;
    object-fit: contain;
    box-shadow: 0 12px 30px rgba(10, 25, 47, 0.15);
}
.artist-badge {
    color: var(--gilt-accent);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    font-size: 0.9rem;
    text-decoration: none;
}
.artist-badge:hover { text-decoration: underline; }
h1.product-title {
    font-family: var(--font-serif);
    font-size: 2.25rem;
    color: var(--navy-primary);
    margin: 0.4rem 0 0.8rem;
    line-height: 1.2;
}
.meta-pill {
    display: inline-block;
    background: #EEF2F6;
    color: var(--navy-light);
    font-size: 0.8rem;
    padding: 0.2rem 0.6rem;
    border-radius: 3px;
    margin-right: 0.5rem;
    margin-bottom: 1.25rem;
}
.price-tag {
    font-size: 2rem;
    font-weight: 700;
    color: var(--navy-primary);
    margin-bottom: 1.5rem;
}
.size-selector { margin-bottom: 2rem; }
.size-selector label {
    display: block;
    font-weight: 600;
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 0.5rem;
    color: #475569;
}
.size-options {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 0.75rem;
}
.size-btn {
    border: 1px solid var(--border);
    background: #FFFFFF;
    padding: 0.85rem 0.5rem;
    text-align: center;
    border-radius: 4px;
    cursor: pointer;
    transition: all 0.2s;
}
.size-btn.active {
    border-color: var(--navy-primary);
    background: var(--navy-primary);
    color: #FFFFFF;
}
.size-btn strong { display: block; font-size: 0.95rem; }
.size-btn span { font-size: 0.8rem; opacity: 0.8; }
.btn-cart {
    width: 100%;
    background: var(--navy-primary);
    color: #FFFFFF;
    border: none;
    padding: 1rem;
    border-radius: 4px;
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    transition: background 0.2s;
}
.btn-cart:hover { background: var(--navy-light); }
.guarantee-box {
    margin-top: 1.5rem;
    padding: 1.25rem;
    border: 1px dashed var(--border);
    border-radius: 4px;
    font-size: 0.85rem;
    color: var(--text-muted);
    line-height: 1.7;
    background: var(--bg-card);
}

/* Global Footer */
footer.site-footer {
    border-top: 1px solid var(--border);
    background: #FAFAFA;
    padding: 3.5rem 2rem 2rem;
    margin-top: 5rem;
}
.footer-grid {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 3rem;
    margin-bottom: 3rem;
}
@media (max-width: 768px) {
    .footer-grid { grid-template-columns: 1fr; gap: 2rem; }
}
.footer-brand {
    font-family: var(--font-serif);
    font-size: 1.4rem;
    color: var(--navy-primary);
    margin-bottom: 0.75rem;
    font-weight: 700;
}
.footer-desc {
    font-size: 0.9rem;
    color: var(--text-muted);
    max-width: 380px;
    line-height: 1.6;
}
.footer-col h4 {
    font-family: var(--font-serif);
    font-size: 0.95rem;
    color: var(--navy-primary);
    margin-bottom: 1rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}
.footer-col ul { list-style: none; }
.footer-col li { margin-bottom: 0.6rem; }
.footer-col a {
    color: var(--text-muted);
    text-decoration: none;
    font-size: 0.9rem;
    transition: color 0.2s;
}
.footer-col a:hover { color: var(--navy-primary); }
.footer-bottom {
    max-width: 1200px;
    margin: 0 auto;
    border-top: 1px solid var(--border);
    padding-top: 1.5rem;
    text-align: center;
    font-size: 0.8rem;
    color: var(--text-muted);
}