:root {
    --checkout-navy: #0B0F19;
    --checkout-orange: #EA580C;
    --checkout-orange-dark: #C2410C;
    --checkout-border: #E5E7EB;
    --checkout-muted: #6B7280;
    --checkout-text: #111827;
}

* { box-sizing: border-box; }

body {
    margin: 0;
    min-height: 100vh;
    color: var(--checkout-text);
    background: #fff;
    font-family: Inter, sans-serif;
}

.checkout-shell {
    width: 100%;
    min-height: 100vh;
    display: grid;
    grid-template-columns: .92fr 1.28fr;
    overflow: hidden;
    background: #fff;
}

.summary-panel {
    position: relative;
    overflow: hidden;
    padding: 48px;
    color: #fff;
    background:
        radial-gradient(circle at 16% 12%, rgba(99, 102, 241, .30), transparent 30%),
        radial-gradient(circle at 92% 82%, rgba(124, 58, 237, .38), transparent 34%),
        linear-gradient(145deg, #0B0F19 0%, #111827 58%, #1F2937 100%);
}

.summary-panel::after {
    position: absolute;
    right: -140px;
    bottom: -160px;
    width: 420px;
    height: 420px;
    border: 1px solid rgba(255, 255, 255, .14);
    border-radius: 50%;
    content: "";
}

.summary-content { position: relative; z-index: 1; max-width: 500px; }

.back-link {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 44px;
    color: rgba(255, 255, 255, .82);
    font-size: 14px;
    text-decoration: none;
}

.back-icon {
    width: 36px;
    height: 36px;
    display: grid;
    place-items: center;
    border: 1px solid rgba(255, 255, 255, .12);
    border-radius: 999px;
    background: rgba(255, 255, 255, .1);
}

.summary-label, .billing-copy, .plan-desc, .tax-note { color: rgba(255, 255, 255, .7); }
.summary-label { margin-bottom: 8px; font-size: 14px; }
.due-amount { margin: 0 0 14px; font: 700 40px/1.08 'Inter', sans-serif; font-variant-numeric: tabular-nums; letter-spacing: -.05em; }
.billing-copy { max-width: 430px; margin: 0 0 32px; font-size: 14px; line-height: 1.55; }
.plan-card { display: flex; gap: 16px; margin-bottom: 24px; }
.plan-logo { width: 44px; height: 44px; display: block; flex: 0 0 auto; border-radius: 12px; }
.plan-main { flex: 1; }
.plan-row, .breakdown-row { display: flex; justify-content: space-between; gap: 16px; }
.plan-row { margin-bottom: 8px; }
.plan-title { font-size: 16px; font-weight: 800; }
.plan-price, .breakdown-row span:last-child { font-family: 'Inter', sans-serif; font-variant-numeric: tabular-nums; text-align: right; white-space: nowrap; }
.plan-price { font-size: 14px; font-weight: 700; }
.plan-desc, .tax-note { margin: 0; font-size: 13px; line-height: 1.5; }

.summary-included {
    margin-bottom: 24px;
    padding: 18px;
    border: 1px solid rgba(255, 255, 255, .14);
    border-radius: 16px;
    background: rgba(255, 255, 255, .08);
}

.summary-included-title { margin: 0 0 12px; font-size: 13px; font-weight: 800; }
.summary-included-list { display: grid; gap: 10px; margin: 0; padding: 0; list-style: none; }
.summary-included-list li { display: flex; gap: 10px; color: rgba(255, 255, 255, .72); font-size: 13px; line-height: 1.45; }
.summary-tick { color: #22C55E; font-weight: 800; }
.price-breakdown { display: grid; gap: 14px; padding-top: 18px; border-top: 1px solid rgba(255, 255, 255, .18); }
.breakdown-row { color: rgba(255, 255, 255, .76); font-size: 14px; }
.breakdown-row strong { color: #fff; }
.tax-note { margin-top: 14px; color: rgba(255, 255, 255, .56); font-size: 12px; }

.form-panel { display: flex; justify-content: center; padding: 48px 64px; background: #fff; }
.form-inner { width: 100%; max-width: 720px; }
.section { margin-bottom: 30px; }
.section-title { margin: 0 0 16px; font-size: 18px; font-weight: 800; letter-spacing: -.02em; }
.plan-grid { display: grid; gap: 12px; }
.billing-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
.payment-methods { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; }

.plan-option, .select-card, .method-button {
    border: 1px solid var(--checkout-border);
    background: #fff;
    cursor: pointer;
    transition: .18s ease;
}

.plan-option { padding: 18px; border-radius: 16px; }
.select-card { position: relative; padding: 16px; border-radius: 14px; }
.method-button { height: 48px; border-radius: 12px; font-weight: 800; }
.plan-option:hover, .select-card:hover, .method-button:hover { border-color: #CBD5E1; background: #FAFAFA; }
.plan-option.active, .select-card.active, .method-button.active { border-color: var(--checkout-orange); box-shadow: 0 0 0 3px rgba(234, 88, 12, .12); }
.plan-option.active { background: #fff; }
.method-button.active { color: var(--checkout-orange); }
.plan-option-header { display: flex; justify-content: space-between; gap: 18px; }
.plan-option-name { display: flex; align-items: center; gap: 8px; font-size: 15px; font-weight: 800; }
.plan-option-price { font: 800 14px 'Inter', sans-serif; font-variant-numeric: tabular-nums; white-space: nowrap; }
.plan-option-desc, .select-card .small, .payment-copy, .fine-print { color: var(--checkout-muted); font-size: 13px; line-height: 1.5; }
.plan-option-desc { margin: 8px 0 0; }
.select-card .small { margin-bottom: 8px; }
.select-card .strong { font-size: 15px; font-weight: 800; }
.check { display: none; position: absolute; top: 16px; right: 16px; color: var(--checkout-orange); font-weight: 900; }
.active .check { display: block; }
.save-badge, .popular-pill { display: inline-flex; align-items: center; height: 22px; padding: 0 8px; border-radius: 999px; font-size: 11px; font-weight: 800; }
.save-badge { margin-left: 8px; background: #DCFCE7; color: #15803D; }
.popular-pill { border: 1px solid #FDBA74; background: #fff; color: #C2410C; letter-spacing: .04em; text-transform: uppercase; }
.payment-box { padding: 20px; border: 1px solid var(--checkout-border); border-radius: 16px; background: #FAFAFA; }
.payment-copy { margin: 0; font-size: 14px; }
.trust-row { display: flex; justify-content: space-between; gap: 16px; margin: 24px 0 16px; color: var(--checkout-muted); font-size: 13px; }
.trust-row strong { color: var(--checkout-text); }
.submit-button { width: 100%; height: 50px; border: 0; border-radius: 12px; background: var(--checkout-orange); color: #fff; cursor: pointer; font-size: 15px; font-weight: 800; transition: .18s ease; }
.submit-button:hover { background: var(--checkout-orange-dark); transform: translateY(-1px); }
.submit-button:disabled { cursor: not-allowed; opacity: .58; transform: none; }
.fine-print { margin: 14px 0 0; text-align: center; }
.form-error { margin: 12px 0 0; color: #B91C1C; font-size: 13px; font-weight: 700; }
.hidden { display: none; }

/* Voucher code (applies after billing frequency, before payment method).
   The code itself may use Fira Code (it is a code, not an amount); every
   monetary value stays Inter tabular-nums per the design system. */
.voucher-input-row { display: flex; gap: 10px; }
.voucher-input {
    flex: 1;
    min-width: 0;
    height: 48px;
    padding: 0 14px;
    border: 1px solid var(--checkout-border);
    border-radius: 12px;
    background: #fff;
    color: var(--checkout-text);
    font: 600 14px 'Fira Code', monospace;
    letter-spacing: .06em;
    text-transform: uppercase;
    transition: .18s ease;
}
.voucher-input::placeholder { color: #9CA3AF; font-weight: 500; }
.voucher-input:focus { outline: none; border-color: var(--checkout-orange); box-shadow: 0 0 0 3px rgba(234, 88, 12, .12); }
.voucher-apply {
    flex: 0 0 auto;
    min-width: 92px;
    height: 48px;
    padding: 0 18px;
    border: 1px solid var(--checkout-border);
    border-radius: 12px;
    background: #fff;
    color: var(--checkout-text);
    cursor: pointer;
    font-size: 14px;
    font-weight: 800;
    transition: .18s ease;
}
.voucher-apply:hover { border-color: #CBD5E1; background: #FAFAFA; }
.voucher-apply:disabled { cursor: not-allowed; opacity: .58; }
.voucher-applied {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    padding: 12px 14px;
    border: 1px solid #BBF7D0;
    border-radius: 12px;
    background: #F0FDF4;
}
.voucher-applied-main { display: flex; align-items: center; gap: 10px; min-width: 0; flex-wrap: wrap; }
.voucher-applied-code { color: #15803D; font: 700 14px 'Fira Code', monospace; letter-spacing: .06em; }
.voucher-applied-detail { color: #166534; font-size: 13px; font-family: 'Inter', sans-serif; font-variant-numeric: tabular-nums; }
.voucher-remove {
    flex: 0 0 auto;
    border: 0;
    background: none;
    color: #B91C1C;
    cursor: pointer;
    font-size: 13px;
    font-weight: 700;
    padding: 4px 2px;
}
.voucher-remove:hover { text-decoration: underline; }
.voucher-error { margin: 10px 0 0; color: #B91C1C; font-size: 13px; font-weight: 600; }
.voucher-success { margin: 10px 0 0; color: #15803D; font-size: 13px; font-weight: 600; font-variant-numeric: tabular-nums; }
.voucher-row-amount { color: #4ADE80; }
/* These set display:flex and are declared after .hidden, so they need their
   own hidden override to lose the cascade tie. */
.voucher-input-row.hidden, .voucher-applied.hidden { display: none; }

@media (max-width: 1040px) {
    .checkout-shell { grid-template-columns: 1fr; }
    .summary-panel { padding: 32px; }
    .form-panel { padding: 36px 32px; }
    .form-inner { max-width: none; }
}

@media (max-width: 680px) {
    .summary-panel, .form-panel { padding: 24px; }
    .billing-grid, .payment-methods { grid-template-columns: 1fr; }
    .due-amount { font-size: 30px; }
    .plan-option-header { flex-direction: column; gap: 10px; }
}