:root {
    --primary: #0891b2;
    --primary-dark: #0e7490;
    --secondary: #164e63;
    --accent: #22d3ee;
    --bg: #ecfeff;
    --card: #fff;
    --text: #0f172a;
    --muted: #64748b;
    --border: #a5f3fc;
    --radius: 20px;
    --shadow: 0 8px 32px rgba(8,145,178,.12);
    --hero-from: #0c4a6e;
    --hero-to: #0891b2;
    --font-body: 'Poppins', system-ui, sans-serif;
    --font-heading: 'Poppins', system-ui, sans-serif;
}

body.theme-ocean {
    background: linear-gradient(180deg, #ecfeff 0%, #f0fdfa 100%);
}

body.theme-ocean .site-header {
    background: rgba(255,255,255,.85);
    backdrop-filter: blur(12px);
    border-bottom: none;
    box-shadow: 0 2px 16px rgba(8,145,178,.08);
}

body.theme-ocean .site-brand-icon {
    border-radius: 50%;
}

body.theme-ocean .search-form input,
body.theme-ocean .search-form button {
    border-radius: 20px;
}

body.theme-ocean .hero {
    border-radius: 0 0 40px 40px;
    padding: 4rem 1rem;
}

body.theme-ocean .hero-stats div {
    border-radius: 999px;
    background: rgba(255,255,255,.2);
    backdrop-filter: blur(4px);
}

body.theme-ocean .coupon-card {
    border: none;
    border-top: 4px solid var(--accent);
}

body.theme-ocean .coupon-card:hover {
    box-shadow: 0 12px 40px rgba(8,145,178,.18);
}

body.theme-ocean .btn {
    border-radius: 999px;
}

body.theme-ocean .site-footer {
    background: linear-gradient(135deg, #164e63, #0e7490);
    border-radius: 40px 40px 0 0;
    margin-top: 4rem;
}

body.theme-ocean .section-title,
body.theme-ocean .hero h1,
body.theme-ocean .page-hero h1 {
    font-family: var(--font-heading);
    font-weight: 700;
}

body.theme-ocean .filter-tabs a {
    border-radius: 20px;
}