:root {
    /* Colors - White Glassmorphism Theme */
    --bg-color: #f0f2f5;
    --glass-bg: rgba(255, 255, 255, 0.6);
    --glass-border: rgba(255, 255, 255, 0.8);
    --glass-shadow: 0 20px 40px rgba(0, 0, 0, 0.08);
    
    --accent-color: #000000;
    --accent-hover: #333333;
    
    --text-primary: #111827;
    --text-secondary: #4b5563;
    --text-tertiary: #9ca3af;
    
    --border-color: rgba(0, 0, 0, 0.1);
    --input-bg: rgba(255, 255, 255, 0.9);
    
    --error-color: #ef4444;
    --success-color: #10b981;
    
    /* Metrics */
    --radius-lg: 24px;
    --radius-md: 12px;
    --radius-sm: 8px;
    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-primary);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
    overflow-x: hidden;
}

/* Abstract shapes for background */
.bg-shape {
    position: absolute;
    border-radius: 50%;
    filter: blur(100px);
    z-index: -1;
    opacity: 0.6;
}
.shape-1 {
    width: 600px;
    height: 600px;
    background: #dbeafe;
    top: -100px;
    left: -100px;
}
.shape-2 {
    width: 500px;
    height: 500px;
    background: #fce7f3;
    bottom: -100px;
    right: -100px;
}
.shape-3 {
    width: 400px;
    height: 400px;
    background: #e0e7ff;
    top: 40%;
    left: 40%;
}

.checkout-wrapper {
    width: 100%;
    max-width: 1100px;
    padding: var(--spacing-xl);
    z-index: 1;
}

.glass-panel {
    background: var(--glass-bg);
    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--glass-shadow);
    display: flex;
    overflow: hidden;
}

/* LEFT SIDE - FORMS */
.checkout-left {
    flex: 3;
    padding: 48px;
    border-right: 1px solid var(--border-color);
}

.checkout-header {
    margin-bottom: var(--spacing-xl);
    text-align: center;
}

.company-logo {
    width: 120px;
    height: auto;
    margin-bottom: var(--spacing-md);
    border-radius: 12px;
}

.checkout-header h1 {
    font-size: 26px;
    font-weight: 700;
    margin-bottom: 4px;
    letter-spacing: -0.02em;
}

.company-address {
    color: var(--text-secondary);
    font-size: 13px;
    line-height: 1.5;
}

/* Quick Pay */
.quick-pay-section {
    margin-bottom: var(--spacing-lg);
}

.section-subtitle {
    font-size: 13px;
    font-weight: 600;
    color: var(--text-secondary);
    text-align: center;
    margin-bottom: var(--spacing-sm);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.quick-pay-buttons {
    display: flex;
    gap: var(--spacing-sm);
}

.qp-btn {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-color);
    background: var(--input-bg);
    cursor: not-allowed;
    font-weight: 600;
    font-size: 15px;
    color: var(--text-primary);
    transition: all 0.2s ease;
    opacity: 0.7;
}

.qp-btn:hover {
    background: rgba(255,255,255,1);
    opacity: 1;
}

.qp-btn.apple-pay { background-color: #000; color: #fff; border: none; }
.qp-btn.google-pay { background-color: #fff; }
.qp-btn.link-pay { background-color: #00D66F; color: #fff; border: none; }

.divider {
    display: flex;
    align-items: center;
    text-align: center;
    margin: 32px 0;
    color: var(--text-tertiary);
    font-size: 13px;
}

.divider::before, .divider::after {
    content: '';
    flex: 1;
    border-bottom: 1px solid var(--border-color);
}

.divider span {
    padding: 0 16px;
}

.form-section {
    margin-bottom: 40px;
}

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-lg);
    padding-bottom: var(--spacing-sm);
    border-bottom: 1px solid var(--border-color);
}

.form-section h2 {
    font-size: 18px;
    font-weight: 600;
    color: var(--text-primary);
}

.card-logos {
    display: flex;
    gap: 6px;
}

.input-row {
    display: flex;
    gap: var(--spacing-md);
}

.input-row .input-group {
    flex: 1;
}

.input-group {
    margin-bottom: var(--spacing-lg);
}

.input-group label {
    display: block;
    font-size: 13px;
    font-weight: 500;
    margin-bottom: 6px;
    color: var(--text-secondary);
}

input, select {
    width: 100%;
    background-color: var(--input-bg);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    padding: 14px 16px;
    border-radius: var(--radius-md);
    font-size: 15px;
    transition: all 0.2s ease;
    outline: none;
    font-family: inherit;
}

input::placeholder {
    color: var(--text-tertiary);
}

input:focus, select:focus {
    border-color: var(--accent-color);
    box-shadow: 0 0 0 3px rgba(0, 0, 0, 0.1);
    background-color: #ffffff;
}

select {
    appearance: none;
    background-image: url("data:image/svg+xml;charset=US-ASCII,%3Csvg%20xmlns%3D%22http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%22%20width%3D%22292.4%22%20height%3D%22292.4%22%3E%3Cpath%20fill%3D%22%234b5563%22%20d%3D%22M287%2069.4a17.6%2017.6%200%200%200-13-5.4H18.4c-5%200-9.3%201.8-12.9%205.4A17.6%2017.6%200%200%200%200%2082.2c0%205%201.8%209.3%205.4%2012.9l128%20127.9c3.6%203.6%207.8%205.4%2012.8%205.4s9.2-1.8%2012.8-5.4L287%2095c3.5-3.5%205.4-7.8%205.4-12.8%200-5-1.9-9.2-5.5-12.8z%22%2F%3E%3C%2Fsvg%3E");
    background-repeat: no-repeat;
    background-position: right 16px top 50%;
    background-size: 10px auto;
}

.input-with-icon {
    position: relative;
}

.input-with-icon input {
    padding-right: 48px;
}

.input-icon {
    position: absolute;
    right: 16px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-tertiary);
    pointer-events: none;
}

/* BUTTON */
.submit-btn {
    width: 100%;
    background-color: var(--accent-color);
    color: white;
    border: none;
    padding: 18px;
    border-radius: var(--radius-md);
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
    box-shadow: 0 4px 14px rgba(0,0,0,0.25);
}

.submit-btn:hover {
    background-color: var(--accent-hover);
    transform: translateY(-1px);
    box-shadow: 0 6px 20px rgba(0,0,0,0.3);
}

.spinner {
    width: 20px;
    height: 20px;
    border: 3px solid rgba(255,255,255,0.3);
    border-radius: 50%;
    border-top-color: white;
    animation: spin 1s ease-in-out infinite;
}

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

.security-info {
    margin-top: 16px;
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 6px;
    color: var(--text-secondary);
    font-size: 12px;
}
.security-info svg {
    color: var(--success-color);
}

.form-message {
    margin-top: 16px;
    padding: 12px;
    border-radius: var(--radius-sm);
    font-size: 14px;
    display: none;
    text-align: center;
}
.form-message.success {
    display: block;
    background-color: rgba(16, 185, 129, 0.1);
    color: var(--success-color);
    border: 1px solid rgba(16, 185, 129, 0.2);
}
.form-message.error {
    display: block;
    background-color: rgba(239, 68, 68, 0.1);
    color: var(--error-color);
    border: 1px solid rgba(239, 68, 68, 0.2);
}

/* RIGHT SIDE - SUMMARY */
.checkout-right {
    flex: 2;
    background-color: rgba(255,255,255,0.4);
    padding: 48px;
    display: flex;
    flex-direction: column;
}

.order-summary h2 {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: var(--spacing-xl);
}

.summary-items {
    margin-bottom: var(--spacing-xl);
}

.car-item {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    padding: 0 0 var(--spacing-md) 0;
    border-bottom: 1px solid var(--border-color);
}

.car-image {
    width: 100%;
    height: auto;
    border-radius: var(--radius-md);
    object-fit: cover;
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
}

.item-details h3 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 8px;
}

.car-specs {
    list-style: none;
    color: var(--text-secondary);
    font-size: 13px;
    line-height: 1.6;
}

.car-specs li::before {
    content: "•";
    color: var(--accent-color);
    font-weight: bold;
    display: inline-block; 
    width: 1em;
}

.item-price {
    font-weight: 700;
    font-size: 20px;
    margin-top: 8px;
}

.summary-totals {
    margin-bottom: var(--spacing-xl);
}

.total-row {
    display: flex;
    justify-content: space-between;
    margin-bottom: 12px;
    color: var(--text-secondary);
    font-size: 14px;
}

.total-row.grand-total {
    margin-top: var(--spacing-md);
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--border-color);
    color: var(--text-primary);
    font-size: 20px;
    font-weight: 700;
}

.accent-price {
    color: var(--accent-color);
}

.support-contact {
    margin-top: auto;
    font-size: 13px;
    color: var(--text-secondary);
    background: rgba(255,255,255,0.5);
    padding: 16px;
    border-radius: var(--radius-md);
    border: 1px dashed var(--border-color);
}
.support-contact a {
    color: var(--accent-color);
    text-decoration: none;
    font-weight: 500;
}

/* FOOTER */
.checkout-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 24px;
    padding: 0 16px;
    font-size: 12px;
    color: var(--text-secondary);
}
.footer-links a {
    color: var(--text-secondary);
    text-decoration: none;
    margin-left: 16px;
}
.footer-links a:hover {
    text-decoration: underline;
    color: var(--text-primary);
}

/* RESPONSIVE */
@media (max-width: 860px) {
    .glass-panel {
        flex-direction: column;
    }
    .checkout-left, .checkout-right {
        padding: var(--spacing-xl);
    }
    .checkout-left {
        border-right: none;
        border-bottom: 1px solid var(--border-color);
    }
    .checkout-footer {
        flex-direction: column;
        gap: 8px;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .input-row {
        flex-direction: column;
        gap: 0;
    }
    .checkout-wrapper {
        padding: var(--spacing-md);
    }
    .quick-pay-buttons {
        flex-direction: column;
    }
}