:root {
    --wine: #6b2e2e;
    --wine-light: #8a3d3d;
    --blush: #f5e8e8;
    --nude: #d8b4a6;
    --dark: #1a1a1a;
    --gray: #6b6b6b;
    --border: #e8ddd8;
    --white: #fff;
}

/* ── Page ── */
.kk-checkout-page {
    min-height: 100vh;
    padding: 3rem 0 5rem;
}

.kk-checkout-title {
    font-size: 1.6rem;
    font-weight: 700;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--dark);
    margin-bottom: 2.5rem;
}

/* ── Steps ── */
.kk-steps {
    display: flex;
    gap: 0;
    margin-bottom: 2.5rem;
    border-bottom: 2px solid var(--border);
    padding-bottom: 1rem;
}

.kk-step {
    font-size: 0.72rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: #bbb;
    display: flex;
    align-items: center;
    gap: 8px;
    margin-right: 2rem;
    font-weight: 600;
}

.kk-step.active {
    color: var(--wine);
}

.kk-step.done {
    color: var(--nude);
}

.kk-step-num {
    width: 22px;
    height: 22px;
    border-radius: 50%;
    background: #e0d5d0;
    color: #999;
    font-size: 0.65rem;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    flex-shrink: 0;
}

.kk-step.active .kk-step-num {
    background: var(--wine);
    color: #fff;
}

.kk-step.done .kk-step-num {
    background: var(--nude);
    color: #fff;
}

/* ── Section Titles ── */
.kk-section-label {
    font-size: 0.68rem;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: var(--wine);
    font-weight: 700;
    margin-bottom: 1.2rem;
    display: flex;
    align-items: center;
    gap: 10px;
}

.kk-section-label::after {
    content: '';
    flex: 1;
    height: 1px;
    background: var(--border);
}

/* ── Form ── */
.kk-form-box {
    background: var(--white);
    border: 1px solid var(--border);
    padding: 2rem;
    margin-bottom: 1.5rem;
}

.kk-input-group {
    margin-bottom: 1.2rem;
}

.kk-label {
    font-size: 0.68rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--gray);
    font-weight: 600;
    display: block;
    margin-bottom: 0.45rem;
}

.kk-input {
    width: 100%;
    border: 1.5px solid var(--border);
    padding: 0.7rem 1rem;
    font-size: 0.9rem;
    color: var(--dark);
    background: #fdfbfa;
    transition: border-color 0.2s, box-shadow 0.2s;
    outline: none;
}

.kk-input:focus {
    border-color: var(--wine);
    box-shadow: 0 0 0 3px rgba(107, 46, 46, 0.08);
    background: #fff;
}

.kk-input::placeholder {
    color: #c5b8b3;
}

textarea.kk-input {
    resize: none;
    height: 80px;
}

/* ── Payment Method ── */
.kk-payment-options {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
    margin-bottom: 1.8rem;
}

.kk-payment-opt {
    border: 2px solid var(--border);
    padding: 1.1rem 1rem;
    cursor: pointer;
    transition: all 0.2s;
    display: flex;
    align-items: center;
    gap: 12px;
    position: relative;
    background: #fdfbfa;
}

.kk-payment-opt:hover {
    border-color: var(--nude);
}

.kk-payment-opt.selected {
    border-color: var(--wine);
    background: var(--blush);
}

.kk-payment-opt input[type="radio"] {
    display: none;
}

.kk-payment-icon {
    width: 38px;
    height: 38px;
    border-radius: 8px;
    background: var(--blush);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
    color: var(--wine);
    flex-shrink: 0;
}

.kk-payment-opt.selected .kk-payment-icon {
    background: var(--wine);
    color: #fff;
}

.kk-payment-opt-label {
    font-size: 0.78rem;
    font-weight: 700;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: var(--dark);
    line-height: 1.2;
}

.kk-payment-opt-sub {
    font-size: 0.7rem;
    color: var(--gray);
    margin-top: 2px;
}

.kk-check-indicator {
    position: absolute;
    top: 10px;
    right: 10px;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    border: 2px solid var(--border);
    transition: all 0.2s;
}

.kk-payment-opt.selected .kk-check-indicator {
    background: var(--wine);
    border-color: var(--wine);
    display: flex;
    align-items: center;
    justify-content: center;
}

.kk-payment-opt.selected .kk-check-indicator::after {
    content: '✓';
    color: white;
    font-size: 10px;
    font-weight: 700;
}

/* ── Link de pago ── */
.kk-payment-link-opt {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-top: 0.85rem;
    padding: 0.85rem 1.1rem;
    border: 1.5px dashed var(--border);
    border-radius: 10px;
    cursor: pointer;
    transition: border-color 0.2s, background 0.2s;
    background: #fdfbfa;
    position: relative;
}

.kk-payment-link-opt:hover {
    border-color: var(--nude);
}

.kk-payment-link-opt.selected {
    border-color: var(--wine);
    border-style: solid;
    background: var(--blush);
}

.kk-payment-link-opt input[type="radio"] {
    display: none;
}

.kk-payment-link-left {
    display: flex;
    align-items: center;
    gap: 12px;
}

.kk-payment-link-icon {
    width: 34px;
    height: 34px;
    border-radius: 8px;
    background: var(--blush);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
    color: var(--wine);
    flex-shrink: 0;
    transition: background 0.2s;
}

.kk-payment-link-opt.selected .kk-payment-link-icon {
    background: var(--wine);
    color: #fff;
}

.kk-payment-link-label {
    font-size: 0.78rem;
    font-weight: 700;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: var(--dark);
}

.kk-payment-link-sub {
    font-size: 0.7rem;
    color: var(--gray);
    margin-top: 2px;
}

.kk-payment-link-opt .kk-check-indicator {
    position: relative;  /* Override del absolute que tienen las cards */
    top: auto;
    right: auto;
    flex-shrink: 0;
}

.kk-payment-link-opt.selected .kk-check-indicator {
    background: var(--wine);
    border-color: var(--wine);
    display: flex;
    align-items: center;
    justify-content: center;
}

.kk-payment-link-opt.selected .kk-check-indicator::after {
    content: '✓';
    color: white;
    font-size: 10px;
    font-weight: 700;
}

/* ── Credit Card ── */
#card-section {
    display: none;
    animation: fadeSlideIn 0.4s ease;
}

@keyframes fadeSlideIn {
    from {
        opacity: 0;
        transform: translateY(12px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.kk-card-visual-wrapper {
    perspective: 1000px;
    margin-bottom: 1.8rem;
}

.kk-card-visual {
    width: 100%;
    max-width: 360px;
    height: 200px;
    margin: 0 auto;
    position: relative;
    transform-style: preserve-3d;
    transition: transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
    cursor: pointer;
}

.kk-card-visual.flipped {
    transform: rotateY(180deg);
}

.kk-card-front,
.kk-card-back {
    position: absolute;
    inset: 0;
    border-radius: 16px;
    backface-visibility: hidden;
    padding: 1.5rem;
    color: #fff;
}

.kk-card-front {
    background: linear-gradient(135deg, #6b2e2e 0%, #3d1818 50%, #5a2525 100%);
    box-shadow: 0 20px 50px rgba(107, 46, 46, 0.4);
}

/* Decorative circles on card */
.kk-card-front::before {
    content: '';
    position: absolute;
    top: -30px;
    right: -30px;
    width: 140px;
    height: 140px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.06);
}

.kk-card-front::after {
    content: '';
    position: absolute;
    bottom: -50px;
    left: 40px;
    width: 180px;
    height: 180px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.04);
}

.kk-card-back {
    background: linear-gradient(135deg, #3d1818 0%, #6b2e2e 100%);
    transform: rotateY(180deg);
    box-shadow: 0 20px 50px rgba(107, 46, 46, 0.4);
}

.kk-card-logo {
    font-size: 0.6rem;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    opacity: 0.7;
    margin-bottom: 0.5rem;
}

.kk-card-chip {
    width: 36px;
    height: 28px;
    background: linear-gradient(135deg, #e8c97a, #c9a84c);
    border-radius: 5px;
    margin-bottom: 1rem;
    position: relative;
    z-index: 1;
}

.kk-card-number-display {
    font-size: 1.05rem;
    letter-spacing: 0.25em;
    font-family: 'Courier New', monospace;
    margin-bottom: 1.2rem;
    opacity: 0.95;
    position: relative;
    z-index: 1;
}

.kk-card-number-display .placeholder {
    opacity: 0.4;
}

.kk-card-bottom {
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    position: relative;
    z-index: 1;
}

.kk-card-holder-label,
.kk-card-exp-label {
    font-size: 0.55rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    opacity: 0.6;
    margin-bottom: 3px;
}

.kk-card-holder-name,
.kk-card-exp-val {
    font-size: 0.82rem;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    font-weight: 600;
}

/* Card back */
.kk-card-stripe {
    background: rgba(0, 0, 0, 0.4);
    height: 40px;
    margin: 1.5rem -1.5rem 1rem;
}

.kk-card-cvv-area {
    background: rgba(255, 255, 255, 0.15);
    border-radius: 4px;
    height: 36px;
    display: flex;
    align-items: center;
    padding: 0 12px;
    justify-content: flex-end;
    font-family: 'Courier New', monospace;
    font-size: 1rem;
    letter-spacing: 0.2em;
}

.kk-card-back-label {
    font-size: 0.6rem;
    letter-spacing: 0.1em;
    opacity: 0.5;
    margin-bottom: 4px;
    text-transform: uppercase;
}

/* ── Card network badges ── */
.kk-card-network {
    display: flex;
    gap: 4px;
    align-items: center;
}

.kk-card-network-circle {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    opacity: 0.85;
}

/* ── Order Summary ── */
.kk-summary-sticky {
    position: sticky;
    top: 100px;
}

.kk-summary-box {
    background: var(--white);
    border: 1px solid var(--border);
    padding: 1.8rem;
}

.kk-summary-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 0.9rem 0;
    border-bottom: 1px solid var(--border);
}

.kk-summary-item:last-child {
    border-bottom: none;
}

.kk-summary-item-img {
    width: 52px;
    height: 52px;
    object-fit: cover;
    background: var(--blush);
    flex-shrink: 0;
}

.kk-summary-item-name {
    font-size: 0.82rem;
    font-weight: 600;
    color: var(--dark);
    line-height: 1.3;
}

.kk-summary-item-color {
    font-size: 0.7rem;
    color: var(--gray);
    display: flex;
    align-items: center;
    gap: 5px;
    margin-top: 3px;
}

.kk-summary-item-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    border: 1px solid rgba(0, 0, 0, 0.1);
    flex-shrink: 0;
}

.kk-summary-item-qty {
    font-size: 0.7rem;
    color: var(--gray);
    margin-top: 2px;
}

.kk-summary-item-price {
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--wine);
    margin-left: auto;
    flex-shrink: 0;
}

.kk-summary-totals {
    margin-top: 1.2rem;
}

.kk-summary-row {
    display: flex;
    justify-content: space-between;
    font-size: 0.82rem;
    color: var(--gray);
    margin-bottom: 0.6rem;
}

.kk-summary-total-row {
    display: flex;
    justify-content: space-between;
    font-size: 1rem;
    font-weight: 700;
    color: var(--dark);
    letter-spacing: 0.05em;
    padding-top: 0.8rem;
    border-top: 2px solid var(--border);
    margin-top: 0.5rem;
}

.kk-summary-total-row span:last-child {
    color: var(--wine);
}

/* ── Submit button ── */
.kk-btn-pay {
    width: 100%;
    background: var(--wine);
    color: #fff;
    border: none;
    padding: 1rem;
    font-size: 0.78rem;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    font-weight: 700;
    cursor: pointer;
    margin-top: 1.5rem;
    transition: background 0.2s, transform 0.15s;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
}

.kk-btn-pay:hover {
    background: var(--wine-light);
    transform: translateY(-1px);
}

.kk-btn-pay:active {
    transform: translateY(0);
}

.kk-btn-pay:disabled {
    background: #c5b8b3;
    cursor: not-allowed;
    transform: none;
}

/* ── Cash info box ── */
#cash-section {
    display: none;
    animation: fadeSlideIn 0.4s ease;
}

.kk-cash-info {
    background: #fdf6e3;
    border: 1.5px solid #e8d5a3;
    padding: 1.2rem 1.4rem;
    font-size: 0.83rem;
    color: #7a6030;
    display: flex;
    gap: 12px;
    align-items: flex-start;
}

.kk-cash-info i {
    font-size: 1.2rem;
    margin-top: 1px;
    flex-shrink: 0;
}

/* ── Error ── */
.kk-field-error {
    font-size: 0.7rem;
    color: #c0392b;
    margin-top: 4px;
    display: none;
}

.kk-input.error {
    border-color: #e74c3c;
}