:root {
    --primary: #4361ee;
    --primary-dark: #3a56d4;
    --success: #4cc9f0;
    --danger: #f72585;
    --warning: #f8961e;
    --dark: #14213d;
    --light: #f8f9fa;
    --gray: #adb5bd;
    --dark-gray: #495057;
    --border-radius: 12px;
    --box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
    --transition: all 0.3s ease;
}

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

body {
    font-family: 'Inter', sans-serif;
    background-color: #f5f7ff;
    color: var(--dark);
    line-height: 1.6;
}

.payment-app {
    display: flex;
    min-height: 100vh;
    padding: 2rem;
    max-width: 1400px;
    margin: 0 auto;
}

.card-preview {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem;
}

.credit-card {
    width: 100%;
    max-width: 400px;
    perspective: 1000px;
}

.card-front, .card-back {
    background: linear-gradient(135deg, #4361ee, #3a0ca3);
    border-radius: 16px;
    padding: 1.5rem;
    color: white;
    height: 220px;
    transition: var(--transition);
    box-shadow: var(--box-shadow);
}

.card-front {
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.card-logo {
    font-weight: 700;
    font-size: 1.2rem;
    text-align: right;
}

.card-number-display {
    font-family: 'Courier New', monospace;
    font-size: 1.4rem;
    letter-spacing: 2px;
    margin: 1rem 0;
    word-spacing: 8px;
}

.card-bottom {
    display: flex;
    justify-content: space-between;
}

.cardholder-display {
    text-transform: uppercase;
    font-size: 0.9rem;
}

.expiry-display {
    font-family: 'Courier New', monospace;
}

.payment-container {
    flex: 1;
    max-width: 500px;
    background: white;
    border-radius: var(--border-radius);
    padding: 2rem;
    box-shadow: var(--box-shadow);
}

.merchant-logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--primary);
    font-weight: 600;
    margin-bottom: 1rem;
}

.merchant-logo i {
    font-size: 1.2rem;
}

.payment-header h1 {
    font-size: 1.8rem;
    margin-bottom: 1.5rem;
    color: var(--dark);
}

.payment-summary-card {
    background: var(--light);
    border-radius: var(--border-radius);
    padding: 1.5rem;
    margin-bottom: 2rem;
}

.summary-item {
    display: flex;
    justify-content: space-between;
    margin-bottom: 0.8rem;
}

.summary-item span {
    color: var(--dark-gray);
}

.summary-item strong {
    font-weight: 600;
}

.amount {
    color: var(--primary);
    font-size: 1.2rem;
}

.payment-notice {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.9rem;
    color: var(--dark-gray);
    margin-top: 1rem;
}

.payment-notice i {
    color: var(--primary);
}

.payment-form {
    margin-top: 1rem;
}

.form-section {
    margin-bottom: 2rem;
}

.form-section h3 {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1.1rem;
    margin-bottom: 1rem;
    color: var(--dark);
}

.form-section h3 i {
    color: var(--primary);
}

.form-group {
    position: relative;
    margin-bottom: 1.5rem;
}

.floating-label {
    position: relative;
}

.floating-label input {
    width: 100%;
    padding: 1rem 1rem 1rem 3rem;
    border: 1px solid var(--gray);
    border-radius: 8px;
    font-size: 1rem;
    transition: var(--transition);
}

.floating-label input:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 2px rgba(67, 97, 238, 0.2);
    outline: none;
}

.floating-label label {
    position: absolute;
    left: 3rem;
    top: 1rem;
    color: var(--dark-gray);
    transition: var(--transition);
    pointer-events: none;
}

.floating-label input:focus + label,
.floating-label input:not(:placeholder-shown) + label {
    top: -0.5rem;
    left: 3rem;
    font-size: 0.8rem;
    background: white;
    padding: 0 0.3rem;
    color: var(--primary);
}

.form-icon {
    position: absolute;
    left: 1rem;
    top: 1rem;
    color: var(--primary);
}

.card-icons {
    position: absolute;
    right: 1rem;
    top: 1rem;
    display: flex;
    gap: 0.5rem;
}

.card-icons i {
    color: var(--gray);
    font-size: 1.2rem;
}

.form-row {
    display: flex;
    gap: 1rem;
}

.half-width {
    flex: 1;
}

.cvv-hint {
    position: absolute;
    right: 1rem;
    top: 1rem;
    color: var(--gray);
    cursor: pointer;
}

.cvv-tooltip {
    position: absolute;
    right: 0;
    bottom: 100%;
    background: var(--dark);
    color: white;
    padding: 0.5rem;
    border-radius: 4px;
    font-size: 0.8rem;
    white-space: nowrap;
    opacity: 0;
    transition: var(--transition);
    pointer-events: none;
}

.cvv-hint:hover .cvv-tooltip {
    opacity: 1;
}

.toggle-pin {
    position: absolute;
    right: 1rem;
    top: 1rem;
    background: none;
    border: none;
    color: var(--gray);
    cursor: pointer;
}

.submit-btn {
    width: 100%;
    padding: 1rem;
    background: var(--primary);
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    cursor: pointer;
    transition: var(--transition);
}

.submit-btn:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
}

.payment-footer {
    --primary-color: #2c3e50;
    --secondary-color: #7f8c8d;
    --accent-color: #3498db;
    --success-color: #27ae60;
    --text-color: #333;
    --bg-color: #f9f9f9;
    --border-color: #e0e0e0;
    
    font-family: 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
    background-color: var(--bg-color);
    padding: 2rem;
    border-top: 1px solid var(--border-color);
    color: var(--text-color);
    font-size: 0.875rem;
    line-height: 1.6;
}

.security-features-container {
    max-width: 1200px;
    margin: 0 auto 1.5rem;
}

.security-features {
    display: flex;
    flex-wrap: wrap;
    gap: 1.5rem;
    justify-content: center;
    padding: 0;
    margin: 0;
    list-style: none;
}

.feature {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    position: relative;
    padding: 0.5rem 1rem;
    background-color: white;
    border-radius: 4px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.05);
    transition: all 0.2s ease;
}

.feature:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0,0,0,0.1);
}

.feature:hover .tooltip {
    visibility: visible;
    opacity: 1;
}

.feature-icon {
    color: var(--accent-color);
}

.feature-text {
    font-weight: 500;
}

.tooltip {
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%);
    background-color: var(--primary-color);
    color: white;
    padding: 0.5rem 1rem;
    border-radius: 4px;
    font-size: 0.75rem;
    white-space: nowrap;
    visibility: hidden;
    opacity: 0;
    transition: opacity 0.2s ease;
    margin-bottom: 0.5rem;
}

.tooltip::after {
    content: '';
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-50%);
    border-width: 5px;
    border-style: solid;
    border-color: var(--primary-color) transparent transparent transparent;
}

.footer-meta {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
    max-width: 1200px;
    margin: 0 auto;
    text-align: center;
}

.copyright {
    color: var(--secondary-color);
}

.legal-links {
    display: flex;
    gap: 1.5rem;
}

.legal-link {
    color: var(--accent-color);
    text-decoration: none;
    transition: color 0.2s ease;
}

.legal-link:hover {
    color: var(--primary-color);
    text-decoration: underline;
}

.visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

@media (min-width: 768px) {
    .footer-meta {
        flex-direction: row;
        justify-content: space-between;
        text-align: left;
    }
    
    .security-features {
        justify-content: flex-start;
    }
}

/* Responsive Design */
@media (max-width: 1024px) {
    .payment-app {
        flex-direction: column;
    }
    
    .card-preview {
        padding: 1rem;
    }
}

@media (max-width: 768px) {
    .payment-app {
        padding: 1rem;
    }
    
    .form-row {
        flex-direction: column;
        gap: 0;
    }
    
    .half-width {
        width: 100%;
    }
}

.payment-footer {
    --primary-color: #2c3e50;
    --secondary-color: #7f8c8d;
    --accent-color: #3498db;
    --success-color: #27ae60;
    --text-color: #333;
    --bg-color: #f9f9f9;
    --border-color: #e0e0e0;
    
    font-family: 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
    background-color: var(--bg-color);
    padding: 2rem;
    border-top: 1px solid var(--border-color);
    color: var(--text-color);
    font-size: 0.875rem;
    line-height: 1.6;
}
.payment-footer {
    --primary-color: #2c3e50;
    --secondary-color: #7f8c8d;
    --text-color: #333;
    --bg-color: #f9f9f9;
    --border-color: #e0e0e0;
    
    font-family: 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
    background-color: var(--bg-color);
    padding: 2rem;
    border-top: 1px solid var(--border-color);
    color: var(--text-color);
    font-size: 0.875rem;
    line-height: 1.6;
}

.security-features-container {
    max-width: 1200px;
    margin: 0 auto 1.5rem;
}

.security-features {
    display: flex;
    flex-wrap: wrap;
    gap: 1.5rem;
    justify-content: center;
    padding: 0;
    margin: 0;
    list-style: none;
}

.feature {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    position: relative;
    padding: 0.75rem 1.25rem;
    background-color: white;
    border-radius: 8px;
    box-shadow: 0 2px 12px rgba(0,0,0,0.08);
    transition: all 0.3s ease;
}

/* Colorful feature variations */
.feature--encryption {
    border-left: 4px solid #4facfe;
}

.feature--compliance {
    border-left: 4px solid #a1c4fd;
}

.feature--fraud {
    border-left: 4px solid #ff758c;
}

.feature--support {
    border-left: 4px solid #ff9a9e;
}

.feature:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 16px rgba(0,0,0,0.12);
}

.feature-icon {
    flex-shrink: 0;
    filter: drop-shadow(0 2px 4px rgba(0,0,0,0.1));
}

.feature-text {
    font-weight: 600;
    color: var(--primary-color);
}

.tooltip {
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%);
    background-color: var(--primary-color);
    color: white;
    padding: 0.5rem 1rem;
    border-radius: 6px;
    font-size: 0.75rem;
    white-space: nowrap;
    visibility: hidden;
    opacity: 0;
    transition: all 0.3s ease;
    margin-bottom: 0.75rem;
    box-shadow: 0 4px 12px rgba(0,0,0,0.15);
    z-index: 10;
}

.tooltip::after {
    content: '';
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-50%);
    border-width: 6px;
    border-style: solid;
    border-color: var(--primary-color) transparent transparent transparent;
}

/* Rest of your existing CSS remains the same */
.footer-meta {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
    max-width: 1200px;
    margin: 0 auto;
    text-align: center;
}

.copyright {
    color: var(--secondary-color);
}

.legal-links {
    display: flex;
    gap: 1.5rem;
}

.legal-link {
    color: var(--primary-color);
    text-decoration: none;
    transition: color 0.2s ease;
    font-weight: 500;
}

.legal-link:hover {
    color: #4facfe;
    text-decoration: underline;
}

.visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

@media (min-width: 768px) {
    .footer-meta {
        flex-direction: row;
        justify-content: space-between;
        text-align: left;
    }
    
    .security-features {
        justify-content: flex-start;
    }
}
}

@media (min-width: 768px) {
    .footer-meta {
        flex-direction: row;
        justify-content: space-between;
        text-align: left;
    }
    
    .security-features {
        justify-content: flex-start;
    }
}