:root {
    --cc-red: #c8102e;
    --cc-red-dark: #9f0d24;
    --cc-black: #111111;
    --cc-text: #252525;
    --cc-muted: #6b7280;
    --cc-line: #e5e7eb;
    --cc-soft: #f6f7f9;
    --cc-white: #ffffff;
    --cc-danger: #9f1d1d;
}

* { box-sizing: border-box; }

body {
    margin: 0;
    min-height: 100vh;
    background: #f4f5f6;
    color: var(--cc-text);
    font-family: Arial, sans-serif;
}

.checkout-shell {
    width: min(1120px, calc(100% - 32px));
    margin: 32px auto;
    background: var(--cc-white);
    border: 1px solid var(--cc-line);
    border-radius: 8px;
    box-shadow: 0 18px 45px rgba(17, 17, 17, 0.08);
    padding: 28px;
}

.checkout-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 24px;
    padding-bottom: 24px;
    border-bottom: 1px solid var(--cc-line);
}

.checkout-kicker {
    margin: 0 0 6px;
    font-size: 12px;
    font-weight: 700;
    text-transform: uppercase;
    color: var(--cc-muted);
}

h1, h2, h3, h4, p { margin-top: 0; }
h1 { margin-bottom: 6px; color: var(--cc-black); font-size: 34px; }
h2 { margin-bottom: 8px; color: var(--cc-black); font-size: 24px; }
h3 { margin-bottom: 14px; color: var(--cc-black); font-size: 18px; }
h4 { margin-bottom: 12px; color: var(--cc-black); font-size: 15px; }

.checkout-meta { margin: 0; color: var(--cc-muted); }

.language-picker {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 700;
    color: var(--cc-black);
}

.language-picker select {
    height: 40px;
    min-width: 92px;
    border: 1px solid var(--cc-line);
    border-radius: 6px;
    background: var(--cc-white);
    padding: 0 10px;
    font-weight: 700;
}

.checkout-stepper {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 12px;
    list-style: none;
    margin: 24px 0;
    padding: 0;
}

.stepper-item {
    display: flex;
    align-items: center;
    gap: 10px;
    min-height: 54px;
    padding: 12px;
    border: 1px solid var(--cc-line);
    border-radius: 8px;
    background: var(--cc-soft);
    color: var(--cc-muted);
}

.stepper-item span {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background: var(--cc-white);
    border: 1px solid var(--cc-line);
    color: var(--cc-black);
    font-weight: 700;
}

.stepper-item strong { font-size: 14px; }
.stepper-item.is-active { border-color: var(--cc-red); background: var(--cc-red); color: var(--cc-white); }
.stepper-item.is-active span { background: var(--cc-white); border-color: var(--cc-white); color: var(--cc-red); }
.stepper-item.is-complete span { background: var(--cc-red); border-color: var(--cc-red); color: var(--cc-white); }
.stepper-item.is-complete { border-color: var(--cc-red-dark); color: var(--cc-black); }
.stepper-item.is-skipped { opacity: 0.55; }

.validation-summary {
    padding: 14px 16px;
    margin-bottom: 20px;
    background: #fff5f5;
    border: 1px solid #f0b9b9;
    border-radius: 8px;
    color: var(--cc-danger);
}
.validation-summary ul { margin: 0; padding-left: 20px; }

.checkout-panel { display: none; }
.checkout-panel.is-active { display: block; }

.panel-heading { max-width: 680px; margin-bottom: 22px; }
.panel-heading p:not(.step-label) { color: var(--cc-muted); }

.step-label {
    display: inline-block;
    margin-bottom: 8px;
    padding: 4px 8px;
    background: var(--cc-red);
    border-radius: 4px;
    color: var(--cc-white);
    font-size: 12px;
    font-weight: 700;
    text-transform: uppercase;
}

.payment-layout,
.payment-review-layout {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 340px;
    gap: 20px;
    align-items: start;
}

.payment-review { display: grid; gap: 18px; }
.payment-sidebar { display: grid; gap: 14px; position: sticky; top: 18px; }

.summary-card {
    border: 1px solid var(--cc-line);
    border-radius: 8px;
    background: var(--cc-white);
    padding: 20px;
}

.card-title-row { display: flex; justify-content: space-between; gap: 16px; align-items: baseline; }
.card-title-row span { color: var(--cc-muted); font-size: 13px; }
.table-scroll { overflow-x: auto; }

table { width: 100%; border-collapse: collapse; }
th, td { padding: 13px 10px; border-bottom: 1px solid var(--cc-line); text-align: left; vertical-align: top; }
th { background: var(--cc-soft); color: var(--cc-black); font-size: 13px; }
.order-table { table-layout: auto; }
.order-table th:nth-child(2),
.order-table td:nth-child(2) { width: 80px; text-align: center; }
.order-table th:nth-child(3),
.order-table td:nth-child(3),
.order-table th:nth-child(4),
.order-table td:nth-child(4) { width: 120px; text-align: right; white-space: nowrap; }
.order-table td:first-child strong { font-weight: 400; }
.line-details { margin-top: 6px; color: var(--cc-muted); font-size: 12px; }

.totals-block { margin-top: 18px; margin-left: auto; max-width: 340px; border-top: 1px solid var(--cc-line); }
.totals-block div { display: flex; justify-content: space-between; align-items: baseline; gap: 20px; padding: 8px 0; border-bottom: 1px solid var(--cc-line); }
.totals-block strong { white-space: nowrap; }
.totals-block .grand-total { border-bottom: 0; color: var(--cc-black); font-size: 20px; }
.review-totals { max-width: 360px; }

.address-review-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; }
.address-review-block { padding: 16px; border: 1px solid var(--cc-line); border-radius: 8px; background: var(--cc-soft); }
.address-review-block dl { display: grid; grid-template-columns: 150px minmax(0, 1fr); gap: 7px 12px; margin: 0; }
.address-review-block dt { color: var(--cc-muted); font-size: 13px; font-weight: 700; }
.address-review-block dd { margin: 0; color: var(--cc-black); word-break: break-word; }
.same-address-note { margin: 0; color: var(--cc-muted); line-height: 1.5; }
.review-order-table th,
.review-order-table td { padding: 10px 8px; }

.form-grid { display: grid; grid-template-columns: repeat(6, minmax(0, 1fr)); gap: 16px; }
.form-group { grid-column: span 3; margin: 0; }
.form-group.wide { grid-column: span 6; }
.form-group.half { grid-column: span 3; }
.form-group.compact { grid-column: span 2; }
.checkout-form-grid { gap: 18px 16px; }
.form-section-title {
    grid-column: span 6;
    margin: 6px 0 -4px;
    padding-left: 10px;
    border-left: 3px solid var(--cc-red);
    color: var(--cc-black);
    font-size: 13px;
    font-weight: 700;
    text-transform: uppercase;
}

.form-group label,
.toggle-row { display: block; margin-bottom: 7px; color: var(--cc-black); font-size: 14px; font-weight: 700; }
.form-group input,
.form-group select {
    width: 100%;
    height: 44px;
    border: 1px solid #cfd4dc;
    border-radius: 6px;
    background: var(--cc-white);
    padding: 0 12px;
    color: var(--cc-text);
    font-size: 15px;
}
.form-group input:focus,
.form-group select:focus,
.language-picker select:focus { outline: 2px solid rgba(200, 16, 46, 0.25); border-color: var(--cc-red); }
.form-group small { display: block; margin-top: 6px; color: var(--cc-muted); }
.required-marker { color: var(--cc-red); font-weight: 800; }

.toggle-row {
    display: flex;
    align-items: center;
    gap: 10px;
    margin: 20px 0 0;
    padding: 14px;
    border: 1px solid var(--cc-line);
    border-radius: 8px;
    background: var(--cc-soft);
}
.toggle-row input { width: 18px; height: 18px; }

.info-note { padding: 18px; border: 1px solid var(--cc-line); border-radius: 8px; background: var(--cc-soft); color: var(--cc-muted); }
.info-note strong { display: block; margin-bottom: 4px; color: var(--cc-black); }

.payment-methods { display: grid; gap: 12px; }
.payment-option { display: flex; gap: 12px; align-items: flex-start; padding: 16px; border: 1px solid var(--cc-line); border-radius: 8px; cursor: pointer; }
.payment-option input { margin-top: 3px; }
.payment-option strong,
.payment-option small { display: block; }
.payment-option small { margin-top: 4px; color: var(--cc-muted); }

.compact-summary { display: flex; flex-direction: column; justify-content: center; min-height: 120px; }
.compact-summary span { color: var(--cc-muted); }
.compact-summary strong { margin-top: 8px; color: var(--cc-black); font-size: 30px; }

.step-actions { display: flex; justify-content: flex-end; margin-top: 26px; }
.split-actions { justify-content: space-between; gap: 12px; }

button,
.primary-btn,
.secondary-btn {
    min-height: 46px;
    border-radius: 6px;
    padding: 0 20px;
    border: 1px solid transparent;
    cursor: pointer;
    font-size: 15px;
    font-weight: 700;
}
.primary-btn { background: var(--cc-red); border-color: var(--cc-red); color: var(--cc-white); }
.secondary-btn { background: var(--cc-white); border-color: var(--cc-line); color: var(--cc-black); }
.primary-btn:hover,
.secondary-btn:hover { filter: brightness(0.97); }

@media (max-width: 860px) {
    .checkout-shell { width: min(100% - 20px, 680px); margin: 10px auto; padding: 18px; }
    .checkout-header,
    .payment-layout,
    .payment-review-layout,
    .address-review-grid { grid-template-columns: 1fr; display: grid; }
    .checkout-header { gap: 14px; }
    .payment-sidebar { position: static; }
    .address-review-block dl { grid-template-columns: 1fr; }
    .checkout-stepper { grid-template-columns: 1fr 1fr; }
    .form-grid { grid-template-columns: 1fr; }
    .form-group,
    .form-group.wide,
    .form-group.half,
    .form-group.compact { grid-column: span 1; }
    .form-section-title { grid-column: span 1; }
    .split-actions,
    .step-actions { flex-direction: column-reverse; }
    .primary-btn,
    .secondary-btn { width: 100%; }
}

@media (max-width: 640px) {
    .table-scroll { overflow-x: visible; }
    .order-table,
    .order-table tbody,
    .order-table tr,
    .order-table td { display: block; width: 100%; }
    .order-table thead { display: none; }
    .order-table tr {
        margin-bottom: 12px;
        padding: 12px;
        border: 1px solid var(--cc-line);
        border-radius: 8px;
        background: var(--cc-white);
    }
    .order-table td {
        display: grid;
        grid-template-columns: minmax(96px, 38%) minmax(0, 1fr);
        gap: 10px;
        padding: 7px 0;
        border-bottom: 0;
        align-items: start;
    }
    .order-table td::before {
        color: var(--cc-muted);
        font-size: 12px;
        font-weight: 700;
        text-transform: uppercase;
    }
    .order-table td:nth-child(1)::before { content: "Artikel"; }
    .order-table td:nth-child(2)::before { content: "Aantal"; }
    .order-table td:nth-child(3)::before { content: "Prijs"; }
    .order-table td:nth-child(4)::before { content: "Totaal"; }
    .order-table td:nth-child(2),
    .order-table td:nth-child(3),
    .order-table td:nth-child(4) { text-align: right; white-space: nowrap; }
    .order-table td:nth-child(1) { text-align: left; }
    .order-table td:nth-child(1) strong { display: block; line-height: 1.35; }
    .totals-block { max-width: none; margin-left: 0; }
    .totals-block div { gap: 14px; }
}

@media (max-width: 520px) {
    h1 { font-size: 28px; }
    h2 { font-size: 21px; }
    .checkout-stepper { grid-template-columns: 1fr; }
    th, td { padding: 10px 8px; }
}