/* Billing / Registration styles */
:root {
    --navy: #1B2E5E;
    --blue: #3B82F6;
    --blue-dark: #1D4ED8;
    --teal: #0EA5E9;
    --green: #22C55E;
    --red: #EF4444;
    --gray-50: #F8FAFC;
    --gray-100: #F1F5F9;
    --gray-200: #E2E8F0;
    --gray-300: #CBD5E1;
    --gray-400: #94A3B8;
    --gray-500: #64748B;
    --gray-600: #475569;
    --gray-700: #334155;
    --gray-800: #1E293B;
    --radius: 12px;
    --shadow-sm: 0 1px 2px rgba(15, 23, 42, .08);
    --shadow-md: 0 8px 20px rgba(15, 23, 42, .10);
    --shadow-lg: 0 18px 40px rgba(15, 23, 42, .16);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    font-family: Inter, Segoe UI, sans-serif;
    background: linear-gradient(180deg, #f8fbff 0%, #eef4ff 100%);
    color: var(--gray-800);
    margin: 0;
}

.container-billing {
    max-width: 1180px;
    margin: 0 auto;
    padding: 24px 16px 80px;
}

.steps-bar {
    position: sticky;
    top: 0;
    z-index: 50;
    display: flex;
    gap: 12px;
    align-items: center;
    justify-content: space-between;
    padding: 14px 18px;
    margin-bottom: 18px;
    background: rgba(255,255,255,.9);
    border: 1px solid var(--gray-200);
    border-radius: var(--radius);
    box-shadow: var(--shadow-sm);
    backdrop-filter: blur(8px);
}
.step-pill {
    flex: 1;
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 12px;
    border-radius: 999px;
    color: var(--gray-500);
    background: var(--gray-100);
    font-weight: 600;
}
.step-pill .step-index {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    display: grid;
    place-items: center;
    background: white;
    color: var(--gray-500);
    box-shadow: var(--shadow-sm);
    font-size: 14px;
}
.step-pill.active { background: rgba(59,130,246,.12); color: var(--blue-dark); }
.step-pill.active .step-index { background: var(--blue); color: white; }
.step-pill.completed { background: rgba(34,197,94,.14); color: #166534; }
.step-pill.completed .step-index { background: var(--green); color: white; }

.step-section { display: none; }
.step-section.active {
    display: block;
    animation: fadeIn .25s ease-out;
}

.panel-card {
    background: white;
    border: 1px solid var(--gray-200);
    border-radius: calc(var(--radius) + 4px);
    box-shadow: var(--shadow-md);
    padding: 24px;
}

.section-title {
    font-size: 1.35rem;
    font-weight: 800;
    margin: 0 0 8px;
    color: var(--navy);
}
.section-subtitle {
    margin: 0 0 18px;
    color: var(--gray-500);
}

.plan-grid, .payment-grid, .bank-grid {
    display: grid;
    gap: 14px;
}
.plan-grid { grid-template-columns: repeat(3, 1fr); }
.payment-grid { grid-template-columns: repeat(2, 1fr); }
.bank-grid { grid-template-columns: repeat(2, 1fr); margin-top: 14px; }

input[type="radio"].hidden-radio {
    position: absolute;
    opacity: 0;
    pointer-events: none;
}

.plan-card, .payment-card, .bank-card {
    display: block;
    border: 1px solid var(--gray-200);
    border-radius: var(--radius);
    background: white;
    box-shadow: var(--shadow-sm);
    cursor: pointer;
    transition: transform .18s ease, box-shadow .18s ease, border-color .18s ease;
}
.plan-card {
    padding: 18px;
    min-height: 250px;
}
.plan-card:hover, .payment-card:hover, .bank-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}
.plan-card.featured {
    background: linear-gradient(180deg, #eef6ff 0%, #ffffff 100%);
    border-color: rgba(59,130,246,.45);
}
.radio-wrap input:checked + .plan-card,
.radio-wrap input:checked + .payment-card,
.radio-wrap input:checked + .bank-card {
    border-color: var(--blue);
    box-shadow: 0 0 0 3px rgba(59,130,246,.15), var(--shadow-md);
}
.plan-name { font-size: 1.2rem; font-weight: 800; margin-bottom: 6px; color: var(--navy); }
.plan-price { font-size: 2rem; font-weight: 900; color: var(--blue-dark); margin: 6px 0 10px; }
.plan-price small { font-size: .95rem; color: var(--gray-500); font-weight: 600; }
.plan-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: .82rem;
    font-weight: 700;
    color: var(--blue-dark);
    background: rgba(59,130,246,.12);
    padding: 6px 10px;
    border-radius: 999px;
    margin-bottom: 14px;
}
.plan-features { list-style: none; padding: 0; margin: 0; color: var(--gray-600); }
.plan-features li { padding: 8px 0; border-bottom: 1px solid var(--gray-100); }
.plan-features li:last-child { border-bottom: 0; }
.plan-description {
    white-space: normal;
    line-height: 1.45;
    color: var(--gray-700);
}

.summary-box, .payphone-box, .success-box {
    background: white;
    border: 1px solid var(--gray-200);
    border-radius: var(--radius);
    box-shadow: var(--shadow-md);
}
.summary-box { padding: 18px; position: sticky; top: 84px; }
.summary-row, .total-row, .detail-row {
    display: flex;
    justify-content: space-between;
    gap: 16px;
    padding: 10px 0;
}
.summary-row + .summary-row, .detail-row + .detail-row { border-top: 1px solid var(--gray-100); }
.total-row {
    border-top: 1px solid var(--gray-200);
    margin-top: 8px;
    padding-top: 14px;
    font-size: 1.08rem;
    font-weight: 900;
}
.monospace {
    font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
    letter-spacing: .02em;
}

.coupon-input-group {
    display: flex;
    gap: 10px;
    margin: 14px 0 8px;
}
.coupon-input-group input { flex: 1; }
.coupon-msg { min-height: 20px; font-size: .92rem; margin-bottom: 6px; }
.coupon-msg.ok { color: #166534; }
.coupon-msg.error { color: var(--red); }

.btn-primary, .btn-coupon, .btn-back, .btn-outline, .btn-payphone {
    border: 0;
    border-radius: 12px;
    font-weight: 800;
    transition: transform .18s ease, box-shadow .18s ease, opacity .18s ease;
}
.btn-primary, .btn-payphone {
    background: linear-gradient(135deg, var(--blue), var(--blue-dark));
    color: white;
    width: 100%;
    padding: 14px 18px;
    box-shadow: 0 10px 20px rgba(29,78,216,.22);
}
.btn-coupon {
    background: var(--navy);
    color: white;
    padding: 12px 16px;
    white-space: nowrap;
}
.btn-back {
    background: transparent;
    color: var(--blue-dark);
    padding: 10px 0;
}
.btn-primary:hover, .btn-coupon:hover, .btn-payphone:hover { transform: translateY(-1px); box-shadow: var(--shadow-lg); }
.btn-primary:disabled, .btn-coupon:disabled, .btn-payphone:disabled { opacity: .7; cursor: not-allowed; transform: none; }

.upload-label {
    display: block;
    border: 2px dashed var(--gray-300);
    border-radius: var(--radius);
    padding: 22px;
    text-align: center;
    color: var(--gray-600);
    background: var(--gray-50);
    cursor: pointer;
    transition: .18s ease;
}
.upload-label:hover { border-color: var(--blue); background: #eef5ff; }
.file-preview {
    margin-top: 12px;
    padding: 12px 14px;
    border-left: 4px solid var(--green);
    background: #f0fdf4;
    border-radius: 10px;
    color: #166534;
}

.bank-card {
    display: flex;
    gap: 14px;
    align-items: center;
    padding: 16px;
}
.bank-logo {
    width: 52px;
    height: 52px;
    border-radius: 14px;
    display: grid;
    place-items: center;
    color: white;
    font-weight: 900;
    flex: 0 0 auto;
}
.bank-meta { display: grid; gap: 4px; }
.bank-title { font-weight: 800; color: var(--navy); }
.bank-account { color: var(--gray-600); }

.payment-card {
    padding: 18px;
    display: flex;
    align-items: center;
    gap: 14px;
}
.payment-icon {
    width: 54px;
    height: 54px;
    border-radius: 16px;
    display: grid;
    place-items: center;
    background: linear-gradient(135deg, rgba(59,130,246,.14), rgba(14,165,233,.12));
    font-size: 1.5rem;
}
.payment-title { font-weight: 800; margin-bottom: 4px; color: var(--navy); }
.payment-desc { color: var(--gray-500); font-size: .94rem; }

.success-box {
    max-width: 760px;
    margin: 0 auto;
    padding: 30px;
    text-align: center;
}
.success-email-note {
    background: #eff6ff;
    border: 1px solid #bfdbfe;
    color: #1d4ed8;
    padding: 14px 16px;
    border-radius: 12px;
    margin: 16px 0;
}

.billing-mode-options {
    display: flex;
    flex-direction: column;
    gap: 10px;
}
.billing-mode-option {
    display: flex;
    align-items: center;
    gap: 10px;
    width: 100%;
    padding: 10px 12px;
    border: 1px solid var(--gray-200);
    border-radius: 12px;
    background: var(--gray-50);
    cursor: pointer;
    color: var(--gray-700);
    font-weight: 600;
    transition: .18s ease;
}
.billing-mode-option:hover {
    border-color: var(--blue);
    background: #eef5ff;
}
.billing-mode-option input:checked + span {
    color: var(--blue-dark);
}
.billing-mode-option:has(input:checked) {
    border-color: var(--blue);
    background: rgba(59,130,246,.10);
    box-shadow: 0 0 0 3px rgba(59,130,246,.10);
}

.form-card {
    background: linear-gradient(180deg, #ffffff 0%, #f8fbff 100%);
    border: 1px solid var(--gray-200);
    border-radius: calc(var(--radius) + 2px);
    box-shadow: var(--shadow-sm);
    padding: 18px;
}
.form-card + .form-card { margin-top: 16px; }
.form-card-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 12px;
    padding-bottom: 14px;
    margin-bottom: 16px;
    border-bottom: 1px solid var(--gray-100);
}
.form-card-title {
    font-size: 1.02rem;
    font-weight: 800;
    color: var(--navy);
}
.form-card-subtitle {
    margin-top: 4px;
    color: var(--gray-500);
    font-size: .92rem;
}

.register-form { margin-top: 18px; text-align: left; }
.form-row {
    display: grid;
    gap: 14px;
    grid-template-columns: repeat(2, 1fr);
    margin-bottom: 14px;
}
.form-group.w-100 { grid-column: 1 / -1; }
.form-group label { display: block; font-weight: 700; margin-bottom: 6px; color: var(--gray-700); }
.form-input, .coupon-input-group input, select.form-input {
    width: 100%;
    border: 1px solid var(--gray-300);
    border-radius: 12px;
    padding: 12px 14px;
    font-size: 1rem;
    outline: none;
    background: white;
}
.form-input:focus, .coupon-input-group input:focus {
    border-color: var(--blue);
    box-shadow: 0 0 0 3px rgba(59,130,246,.14);
}

.payphone-box { padding: 20px; }
.secure-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 12px;
    border-radius: 999px;
    background: #ecfeff;
    color: #0f766e;
    font-weight: 800;
    margin-bottom: 16px;
}
.cards-accepted { display: flex; flex-wrap: wrap; gap: 10px; margin: 12px 0 18px; }
.card-chip {
    padding: 8px 12px;
    border-radius: 999px;
    background: var(--gray-100);
    color: var(--gray-700);
    font-weight: 700;
}

.mockup-overlay, #globalLoader {
    position: fixed;
    inset: 0;
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 9999;
}
.mockup-overlay { background: rgba(15, 23, 42, .72); }
#globalLoader { background: rgba(15, 23, 42, .62); }
.mockup-modal {
    width: min(92vw, 460px);
    background: white;
    border-radius: 18px;
    padding: 24px;
    box-shadow: var(--shadow-lg);
}
.spinner {
    width: 54px;
    height: 54px;
    border: 5px solid rgba(255,255,255,.24);
    border-top-color: white;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}
.loader-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 16px;
    color: white;
    font-weight: 700;
}

.empty-state {
    text-align: center;
    color: var(--gray-500);
    padding: 16px;
}

@keyframes spin { to { transform: rotate(360deg); } }
@keyframes fadeIn { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: translateY(0); } }

@media (max-width: 960px) {
    .plan-grid, .payment-grid, .bank-grid { grid-template-columns: 1fr; }
    .summary-box { position: static; }
}
@media (max-width: 640px) {
    .steps-bar { gap: 8px; padding: 10px; }
    .step-pill { justify-content: center; }
    .step-pill .step-text { display: none; }
    .form-row { grid-template-columns: 1fr; }
    .summary-row, .total-row, .detail-row { flex-direction: column; }
    .coupon-input-group { flex-direction: column; }
}
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after { animation: none !important; transition: none !important; scroll-behavior: auto !important; }
}