:root {
    --brand-primary: #2563eb;
    --brand-dark: #1e293b;
    --brand-light: #f8fafc;
}

body {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    background: linear-gradient(160deg, #f0f4ff 0%, #f8fafc 50%, #ffffff 100%);
    font-family: "Segoe UI", system-ui, -apple-system, sans-serif;
}

.navbar {
    box-shadow: 0 1px 12px rgba(15, 23, 42, 0.06);
}

.site-logo {
    height: 42px;
    width: auto;
    display: block;
}

.navbar .nav-link {
    color: var(--brand-dark);
    font-weight: 500;
}

.navbar .nav-link:hover,
.navbar .nav-link.active {
    color: var(--brand-primary);
}

@media (max-width: 575.98px) {
    .site-logo {
        height: 32px;
    }
}

main {
    flex: 1;
    padding: 3rem 0;
}

.payment-card {
    border: none;
    border-radius: 1rem;
    box-shadow: 0 10px 40px rgba(15, 23, 42, 0.08);
    overflow: hidden;
}

.payment-card .card-header {
    background: var(--brand-dark);
    color: #fff;
    border: none;
    padding: 1.5rem 2rem;
}

.payment-card .card-body {
    padding: 2rem;
}

.feature-icon {
    width: 3rem;
    height: 3rem;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 0.75rem;
    background: rgba(37, 99, 235, 0.1);
    color: var(--brand-primary);
    font-size: 1.25rem;
}

.btn-brand {
    background: var(--brand-primary);
    border-color: var(--brand-primary);
    color: #fff;
    padding: 0.75rem 1.5rem;
    border-radius: 0.5rem;
    font-weight: 500;
}

.btn-brand:hover {
    background: #1d4ed8;
    border-color: #1d4ed8;
    color: #fff;
}

.hero-title {
    font-weight: 700;
    letter-spacing: -0.02em;
}

.option-card {
    transition: transform 0.2s ease, box-shadow 0.2s ease;
    border: 1px solid rgba(15, 23, 42, 0.08);
    border-radius: 1rem;
    height: 100%;
}

.option-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 32px rgba(15, 23, 42, 0.1);
}

.razorpay-widget-wrap {
    min-height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.site-footer {
    background: var(--brand-dark);
    color: rgba(255, 255, 255, 0.6);
}

.site-footer a:hover {
    color: #fff !important;
}

.badge-usd {
    background: rgba(37, 99, 235, 0.12);
    color: var(--brand-primary);
    font-weight: 500;
}