*, *::before, *::after { box-sizing: border-box; }
body {
    margin: 0;
    font-family: system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
    background: linear-gradient(180deg, #eef2f7 0%, #f8fafc 100%);
    color: #111827;
}
.pay-wrap {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1.25rem 1rem 2rem;
}
.pay-card {
    width: 100%;
    max-width: 520px;
    background: #fff;
    border: 1px solid #e5e7eb;
    border-radius: 14px;
    overflow: hidden;
    box-shadow: 0 18px 40px rgba(15, 23, 42, 0.08);
}
.pay-brand {
    padding: 1.15rem 1.25rem 1rem;
    background: linear-gradient(180deg, #fff 0%, #fafbfc 100%);
    border-bottom: 1px solid #eef2f7;
}
.pay-brand-top {
    display: flex;
    align-items: center;
    gap: 0.85rem;
}
.pay-brand-logo {
    width: 64px;
    height: 64px;
    border-radius: 50%;
    object-fit: cover;
    border: 1px solid #e5e7eb;
    flex-shrink: 0;
    background: #111827;
}
.pay-brand-head { min-width: 0; }
.pay-brand-name {
    margin: 0;
    font-size: 1.2rem;
    line-height: 1.2;
    font-weight: 700;
    color: #111827;
}
.pay-brand-tagline {
    margin: 0.2rem 0 0;
    font-size: 0.88rem;
    color: #6b7280;
}
.pay-brand-contact {
    list-style: none;
    margin: 0.85rem 0 0;
    padding: 0;
    display: grid;
    gap: 0.42rem;
}
.pay-brand-line {
    display: flex;
    align-items: flex-start;
    gap: 0.45rem;
    font-size: 0.86rem;
    line-height: 1.45;
    color: #374151;
}
.pay-brand-icon {
    flex-shrink: 0;
    width: 1.1rem;
    text-align: center;
    line-height: 1.45;
}
.pay-brand-icon-svg {
    display: inline-flex;
    align-items: center;
    justify-content: center;
}
.pay-brand-icon-svg svg { display: block; }
.pay-brand-line a {
    color: #1d4ed8;
    text-decoration: none;
    word-break: break-word;
}
.pay-brand-line a:hover { text-decoration: underline; }
.pay-body { padding: 1.15rem 1.25rem 1.25rem; }
.pay-section-label {
    margin: 0 0 0.35rem;
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: #6b7280;
}
.pay-title {
    margin: 0 0 0.25rem;
    font-size: 1.35rem;
    line-height: 1.2;
}
.pay-sub {
    margin: 0 0 1rem;
    color: #6b7280;
    font-size: 0.95rem;
}
.pay-rows {
    border: 1px solid #eef2f7;
    border-radius: 10px;
    padding: 0.85rem 0.95rem;
    margin-bottom: 1rem;
    background: #fafbfc;
}
.pay-row {
    display: flex;
    justify-content: space-between;
    gap: 1rem;
    margin-bottom: 0.45rem;
    font-size: 0.95rem;
}
.pay-row:last-child { margin-bottom: 0; }
.pay-row.total {
    font-weight: 700;
    font-size: 1.08rem;
    margin-top: 0.65rem;
    padding-top: 0.65rem;
    border-top: 1px solid #e5e7eb;
}
.pay-msg {
    padding: 0.75rem 0.9rem;
    border-radius: 8px;
    font-size: 0.92rem;
    margin-bottom: 1rem;
    line-height: 1.45;
}
.pay-msg-error { background: #fee2e2; color: #991b1b; }
.pay-msg-warn { background: #fef3c7; color: #92400e; border: 1px solid #fde68a; }
.pay-btn {
    display: inline-block;
    width: 100%;
    text-align: center;
    border: none;
    border-radius: 10px;
    padding: 0.9rem 1rem;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    background: #0f766e;
    color: #fff;
    transition: background 0.15s ease;
}
.pay-btn:hover:not(:disabled) { background: #0d655e; }
.pay-btn:disabled { opacity: 0.55; cursor: not-allowed; }
.pay-footer {
    padding: 0.85rem 1.25rem 1rem;
    border-top: 1px solid #eef2f7;
    text-align: center;
    font-size: 0.78rem;
    color: #9ca3af;
    background: #fafbfc;
}
.pay-footer-link {
    color: #1d4ed8;
    text-decoration: none;
}
.pay-footer-link:hover { text-decoration: underline; }
.pay-footer-wa {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    vertical-align: middle;
}
.pay-footer-wa svg { flex-shrink: 0; }
@media (max-width: 480px) {
    .pay-brand-top { align-items: flex-start; }
    .pay-brand-logo { width: 56px; height: 56px; }
    .pay-brand-name { font-size: 1.08rem; }
}