/* ═══════════════════════════════════════════════════════════════
   checkout.css — Subscription Checkout Page
═══════════════════════════════════════════════════════════════ */

/* ── Hero ──────────────────────────────────────────────────────── */
.checkout-hero {
    background: linear-gradient(135deg, var(--brand) 0%, #185fa5 55%, #0a4a84 100%);
    padding: 36px 0 32px;
    color: #fff;
}

.checkout-hero .section-eyebrow {
    color: rgba(255,255,255,.75);
    text-align: left;
    margin-bottom: 8px;
}

.checkout-title {
    font-size: clamp(22px, 3.5vw, 34px);
    font-weight: 700;
    color: #fff;
    margin: 0;
    letter-spacing: -.4px;
}

/* ── Back link ─────────────────────────────────────────────────── */
.back-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 13px;
    font-weight: 500;
    color: rgba(255,255,255,.8);
    margin-bottom: 16px;
    transition: color .15s;
    text-decoration: none;
}

.back-link:hover { color: #fff; }

/* ── Checkout section ──────────────────────────────────────────── */
.checkout-section {
    padding: 48px 0 72px;
}

/* ── Submitting overlay ────────────────────────────────────────── */
.submitting-state {
    text-align: center;
    padding: 80px 0;
    color: var(--text-2);
    font-size: 15px;
}

.submitting-state .loading-spinner {
    margin: 0 auto 20px;
}

/* ── Two-column layout ─────────────────────────────────────────── */
.checkout-layout {
    display: grid;
    grid-template-columns: 1fr 380px;
    gap: 32px;
    align-items: start;
}

/* ── Form wrap ─────────────────────────────────────────────────── */
.checkout-form-wrap {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 32px;
    box-shadow: var(--shadow-sm);
}

.checkout-form-wrap h2 {
    font-size: 20px;
    font-weight: 700;
    color: var(--text);
    margin: 0 0 6px;
}

.form-sub {
    font-size: 14px;
    color: var(--text-2);
    margin: 0 0 24px;
    line-height: 1.6;
}

/* ── Error banner ──────────────────────────────────────────────── */
.form-error {
    display: flex;
    align-items: center;
    gap: 10px;
    background: #fff1f2;
    border: 1px solid #fecdd3;
    border-radius: 8px;
    padding: 12px 16px;
    font-size: 14px;
    color: #be123c;
    margin-bottom: 20px;
}

[data-theme="dark"] .form-error {
    background: rgba(190,18,60,.12);
    border-color: rgba(248,113,113,.25);
    color: #f87171;
}

/* ── Form grid ─────────────────────────────────────────────────── */
.form-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    margin-bottom: 24px;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.form-group.full {
    grid-column: 1 / -1;
}

.form-group label {
    font-size: 13px;
    font-weight: 600;
    color: var(--text);
}

.req {
    color: #ef4444;
    margin-left: 2px;
}

.form-group input,
.form-group select {
    width: 100%;
    padding: 10px 13px;
    border: 1.5px solid var(--border);
    border-radius: var(--radius-sm);
    background: var(--surface);
    color: var(--text);
    font-size: 14px;
    font-family: var(--font-body);
    outline: none;
    transition: border-color .15s, box-shadow .15s;
    appearance: none;
    -webkit-appearance: none;
}

.form-group input:focus,
.form-group select:focus {
    border-color: var(--brand);
    box-shadow: 0 0 0 3px rgba(11,116,209,.15);
}

.form-group input.input-error,
.form-group select.input-error {
    border-color: #ef4444;
    box-shadow: 0 0 0 3px rgba(239,68,68,.1);
}

.field-error {
    font-size: 12px;
    color: #ef4444;
}

/* ── Payment notice ────────────────────────────────────────────── */
.payment-notice {
    display: flex;
    gap: 14px;
    align-items: flex-start;
    background: var(--brand-light);
    border: 1px solid rgba(11,116,209,.2);
    border-radius: 10px;
    padding: 16px 18px;
    margin-bottom: 24px;
}

[data-theme="dark"] .payment-notice {
    background: rgba(11,116,209,.1);
    border-color: rgba(11,116,209,.3);
}

.notice-icon {
    font-size: 22px;
    flex-shrink: 0;
    line-height: 1;
    margin-top: 2px;
}

.payment-notice strong {
    display: block;
    font-size: 14px;
    font-weight: 600;
    color: var(--text);
    margin-bottom: 4px;
}

.payment-notice p {
    margin: 0;
    font-size: 13px;
    color: var(--text-2);
    line-height: 1.6;
}

/* ── Submit button ─────────────────────────────────────────────── */
.submit-btn {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 13px 24px;
    background: var(--brand);
    color: #fff;
    border: 1.5px solid transparent;
    border-radius: var(--radius-sm);
    font-size: 15px;
    font-weight: 600;
    font-family: var(--font-body);
    cursor: pointer;
    transition: all .22s cubic-bezier(0.4,0,0.2,1);
}

.submit-btn:hover:not(:disabled) {
    background: #fff;
    color: var(--brand);
    border-color: var(--brand);
    box-shadow: 0 8px 28px rgba(11,116,209,.22);
    transform: translateY(-2px);
}

.submit-btn:disabled {
    opacity: .7;
    cursor: not-allowed;
}

.btn-spinner {
    width: 16px;
    height: 16px;
    border: 2px solid rgba(255,255,255,.4);
    border-top-color: #fff;
    border-radius: 50%;
    animation: btn-spin .6s linear infinite;
    flex-shrink: 0;
}

@keyframes btn-spin { to { transform: rotate(360deg); } }

/* ── Order summary ─────────────────────────────────────────────── */
.checkout-summary {
    position: sticky;
    top: 88px;
}

.summary-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 26px;
    box-shadow: var(--shadow-sm);
}

.summary-card h3 {
    font-size: 16px;
    font-weight: 700;
    color: var(--text);
    margin: 0 0 18px;
    padding-bottom: 14px;
    border-bottom: 1px solid var(--border);
}

.summary-system {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 20px;
}

.sys-icon {
    font-size: 28px;
    flex-shrink: 0;
    line-height: 1;
}

.summary-system strong {
    display: block;
    font-size: 15px;
    font-weight: 600;
    color: var(--text);
}

.summary-system span {
    font-size: 13px;
    color: var(--text-2);
}

/* ── Line items ────────────────────────────────────────────────── */
.summary-lines {
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin-bottom: 16px;
}

.sum-line {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 13px;
    color: var(--text-2);
}

.sum-line span:last-child {
    font-weight: 600;
    color: var(--text);
}

.sum-module {
    padding-left: 12px;
    color: var(--text-3);
    font-size: 12px;
}

.sum-divider {
    height: 1px;
    background: var(--border);
    margin: 4px 0 16px;
}

.sum-total {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 16px;
    font-weight: 700;
    color: var(--text);
    margin-bottom: 4px;
}

.sum-monthly {
    text-align: right;
    font-size: 12px;
    color: var(--text-3);
    margin-bottom: 20px;
}

/* ── Perks list ────────────────────────────────────────────────── */
.summary-perks {
    list-style: none;
    padding: 0;
    margin: 0;
    border-top: 1px solid var(--border);
    padding-top: 16px;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.summary-perks li {
    font-size: 13px;
    color: var(--text-2);
    display: flex;
    align-items: center;
    gap: 6px;
}

/* ── Responsive ────────────────────────────────────────────────── */
@media (max-width: 900px) {
    .checkout-layout {
        grid-template-columns: 1fr;
    }

    .checkout-summary {
        position: static;
        order: -1;
    }
}

@media (max-width: 600px) {
    .checkout-form-wrap {
        padding: 20px 16px;
    }

    .form-grid {
        grid-template-columns: 1fr;
    }

    .checkout-section {
        padding: 32px 0 52px;
    }
}