/* Santhigiri Publications — public site styles
   Design language: warm paper background, maroon/turmeric accents,
   serif display type — a publishing-house feel rather than a generic
   storefront. Mobile-first, per SRS §2. */

@import url('https://fonts.googleapis.com/css2?family=Fraunces:opsz,wght@9..144,500;9..144,600&family=Source+Sans+3:wght@400;500;600&display=swap');

:root {
    --paper: #F7F2E9;
    --paper-deep: #EFE7D8;
    --ink: #2A241B;
    --maroon: #7A2E2E;
    --maroon-dark: #5E2323;
    --turmeric: #B9812E;
    --rule: #D9CDB4;
    --muted: #6E6853;
}

* { box-sizing: border-box; }
body { margin: 0; font-family: 'Source Sans 3', sans-serif; color: var(--ink); background: var(--paper); line-height: 1.5; }
h1, h2, h3 { font-family: 'Fraunces', serif; font-weight: 600; }
a { color: inherit; }

.site-header { display: flex; align-items: center; justify-content: space-between; padding: 1rem 2rem; background: var(--paper); border-bottom: 1px solid var(--rule); flex-wrap: wrap; }
.site-header nav a { margin-left: 1.3rem; text-decoration: none; color: var(--ink); font-size: 0.95rem; }
.site-header nav a:hover { color: var(--maroon); }
.logo { font-family: 'Fraunces', serif; font-weight: 600; font-size: 1.3rem; text-decoration: none; color: var(--ink); }

main { padding: 1.5rem 2rem; max-width: 1150px; margin: 0 auto; }

.hero { text-align: center; padding: 3rem 1.5rem; background: var(--paper-deep); border-radius: 8px; margin-bottom: 2rem; }
.hero h1 { font-size: 2.2rem; margin-bottom: 0.5rem; }

.btn { display: inline-flex; align-items: center; justify-content: center; min-height: 44px; padding: 0.65rem 1.4rem; border-radius: 3px; text-decoration: none; margin: 0.25rem; font-size: 0.95rem; border: none; cursor: pointer; }
.btn-primary { background: var(--maroon); color: var(--paper); }
.btn-primary:hover { background: var(--maroon-dark); }
.btn-secondary { background: var(--paper-deep); color: var(--ink); border: 1px solid var(--rule); }

.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(170px, 1fr)); gap: 1.3rem; }
.product-card { display: flex; flex-direction: column; text-decoration: none; color: var(--ink); }
.product-card .cover-placeholder { aspect-ratio: 3/4.2; border-radius: 3px; margin-bottom: 0.6rem; display: flex; align-items: flex-end; padding: 0.8rem; font-family: 'Fraunces', serif; color: var(--paper); font-size: 0.95rem; background: linear-gradient(160deg, var(--maroon), var(--maroon-dark)); box-shadow: 0 10px 20px -10px rgba(42,36,27,0.35); }
.product-card .author { font-size: 0.82rem; color: var(--muted); margin-top: 0.15rem; }
.product-card .price { margin-top: auto; font-weight: 600; padding-top: 0.4rem; }

.product-detail { display: flex; gap: 2.5rem; flex-wrap: wrap; }
.product-detail .images img, .product-detail .cover-placeholder-lg { width: 100%; max-width: 280px; border-radius: 4px; box-shadow: 0 18px 30px -15px rgba(42,36,27,0.4); }
.cover-placeholder-lg { aspect-ratio: 3/4.2; display: flex; align-items: flex-end; padding: 1.4rem; font-family: 'Fraunces', serif; color: var(--paper); font-size: 1.2rem; background: linear-gradient(160deg, var(--maroon), var(--maroon-dark)); }

.header-search { flex: 1; max-width: 320px; margin: 0 1rem; }
.header-search input { width: 100%; padding: 0.55rem 0.9rem; border-radius: 999px; border: 1px solid var(--rule); font-size: 16px; background: #fff; }

table { width: 100%; border-collapse: collapse; margin: 1rem 0; }
table th, table td { text-align: left; padding: 0.55rem; border-bottom: 1px solid var(--rule); }
form label { display: block; margin-bottom: 0.9rem; font-size: 0.92rem; }
input, select, textarea { width: 100%; padding: 0.55rem; margin-top: 0.3rem; border: 1px solid var(--rule); border-radius: 3px; font-size: 16px; background: #fff; }
.error { color: #b00020; }

footer.site-footer { padding: 2rem; text-align: center; color: var(--muted); font-size: 0.85rem; border-top: 1px solid var(--rule); margin-top: 2rem; }

@media (max-width: 700px) {
    .site-header { flex-direction: column; align-items: flex-start; gap: 0.5rem; }
    .header-search { order: 3; max-width: 100%; margin: 0.5rem 0; }
    .site-header nav { display: flex; flex-wrap: wrap; gap: 0.3rem 1rem; }
    .site-header nav a { margin-left: 0; }
    .product-detail { flex-direction: column; }
    .grid { grid-template-columns: repeat(2, 1fr); }
    table { display: block; overflow-x: auto; white-space: nowrap; }
    .btn { display: block; width: 100%; text-align: center; margin: 0.4rem 0; }
    .checkout-summary form { flex-direction: column; }
}