/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
    min-height: 100vh;
    color: #334155;
    line-height: 1.6;
}

.container {
    max-width: 450px;
    margin: 0 auto;
    padding: 2rem 1rem;
}

/* Header Styles */
.header {
    text-align: center;
    margin-bottom: 2rem;
}

.header h1 {
    font-size: 2rem;
    font-weight: 700;
    color: #1e293b;
    margin-bottom: 0.5rem;
    letter-spacing: -0.025em;
}

.header p {
    color: #64748b;
    font-size: 0.875rem;
    font-weight: 500;
}

/* Checkout Card */
.checkout-card {
    background: white;
    border-radius: 1rem;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    overflow: hidden;
    border: 1px solid #e2e8f0;
}

/* Form Header */
.form-header {
    background: linear-gradient(135deg, #2563eb 0%, #4f46e5 100%);
    padding: 1.5rem;
    color: white;
}

.form-header h2 {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 0.25rem;
}

.form-header p {
    color: #bfdbfe;
    font-size: 0.875rem;
}

/* Form Content */
.form-content {
    padding: 1.5rem;
}

.section {
    margin-bottom: 1.5rem;
}

.section h3 {
    color: #1e293b;
    font-weight: 600;
    font-size: 1rem;
    margin-bottom: 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid #e2e8f0;
}

/* Form Groups */
.form-group {
    margin-bottom: 1rem;
}

.form-group label {
    display: block;
    font-size: 0.875rem;
    font-weight: 500;
    color: #374151;
    margin-bottom: 0.5rem;
}

/* Input Styles */
.input-container {
    position: relative;
}

.input-container input {
    width: 100%;
    padding: 0.75rem 1rem 0.75rem 1rem;
    padding-right: 2.5rem;
    border: 2px solid #e2e8f0;
    border-radius: 0.75rem;
    font-size: 0.875rem;
    transition: all 0.2s ease;
    background: white;
}

.input-container input:focus {
    outline: none;
    border-color: #2563eb;
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.input-container i {
    position: absolute;
    right: 0.75rem;
    top: 50%;
    transform: translateY(-50%);
    color: #9ca3af;
    font-size: 0.875rem;
}

/* Phone Container */
.phone-container {
    display: flex;
    position: relative;
}

.country-code {
    background: #f8fafc;
    border: 2px solid #e2e8f0;
    border-right: none;
    border-radius: 0.75rem 0 0 0.75rem;
    padding: 0.75rem;
    font-weight: 500;
    color: #374151;
    display: flex;
    align-items: center;
    font-size: 0.875rem;
}

.phone-container input {
    flex: 1;
    border-radius: 0 0.75rem 0.75rem 0;
    border-left: none;
    padding-left: 1rem;
}

.phone-container i {
    position: absolute;
    right: 0.75rem;
    top: 50%;
    transform: translateY(-50%);
    color: #9ca3af;
    font-size: 0.875rem;
}

.format-hint {
    font-size: 0.75rem;
    color: #6b7280;
    margin-top: 0.25rem;
}

/* Payment Methods */
.payment-methods {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0.75rem;
}

.payment-option {
    position: relative;
}

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

.payment-option label {
    cursor: pointer;
    display: block;
}

.payment-card {
    border: 2px solid #e2e8f0;
    border-radius: 0.75rem;
    padding: 1rem;
    text-align: center;
    transition: all 0.2s ease;
    background: white;
}

.payment-card:hover {
    border-color: #60a5fa;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.payment-option input[type="radio"]:checked + label .payment-card {
    border-color: #2563eb;
    background: #eff6ff;
}

.payment-card i {
    font-size: 2rem;
    margin-bottom: 0.5rem;
    display: block;
}

.payment-card span {
    font-size: 0.875rem;
    font-weight: 500;
    color: #374151;
}

/* Payment Method Icons */
.fab.fa-cc-visa {
    color: #1a1f71;
}

.fab.fa-cc-mastercard {
    color: #eb001b;
}

.payment-card.mpesa {
    border-color: #00a651;
}

.payment-card.mpesa i {
    color: white;
    background: #00a651;
    width: 2rem;
    height: 2rem;
    border-radius: 0.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 0.5rem;
    font-size: 1rem;
}

.payment-card.emola {
    border-color: #ff6600;
}

.payment-card.emola i {
    color: white;
    background: #ff6600;
    width: 2rem;
    height: 2rem;
    border-radius: 0.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 0.5rem;
    font-size: 1rem;
}

/* Order Summary */
.order-summary {
    background: #f8fafc;
    border-radius: 0.75rem;
    padding: 1rem;
    margin-bottom: 1.5rem;
}

.order-summary h3 {
    color: #1e293b;
    font-weight: 600;
    font-size: 1rem;
    margin-bottom: 0.75rem;
    border: none;
    padding: 0;
}

.summary-row {
    display: flex;
    justify-content: space-between;
    margin-bottom: 0.5rem;
    font-size: 0.875rem;
}

.summary-row.total {
    border-top: 1px solid #e2e8f0;
    padding-top: 0.5rem;
    margin-top: 0.75rem;
    font-weight: 600;
}

.summary-row.total span:last-child {
    font-size: 1.125rem;
    color: #2563eb;
}

/* Submit Button */
.submit-btn {
    width: 100%;
    background: linear-gradient(135deg, #2563eb 0%, #4f46e5 100%);
    color: white;
    font-weight: 600;
    padding: 1rem 1.5rem;
    border: none;
    border-radius: 0.75rem;
    font-size: 1rem;
    cursor: pointer;
    transition: all 0.2s ease;
    box-shadow: 0 4px 14px rgba(37, 99, 235, 0.4);
    margin-bottom: 1rem;
}

.submit-btn:hover {
    transform: translateY(-1px);
    box-shadow: 0 8px 25px rgba(37, 99, 235, 0.5);
}

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

.submit-btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
}

.submit-btn i {
    margin-right: 0.5rem;
}

/* Security Notice */
.security-notice {
    text-align: center;
    font-size: 0.75rem;
    color: #6b7280;
    display: flex;
    align-items: center;
    justify-content: center;
}

.security-notice i {
    color: #10b981;
    margin-right: 0.25rem;
    font-size: 0.75rem;
}

/* Footer */
.footer {
    margin-top: 2rem;
    text-align: center;
}

.accepted-methods {
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1rem;
    gap: 1rem;
}

.accepted-methods span {
    font-size: 0.875rem;
    color: #64748b;
}

.method-icons {
    display: flex;
    gap: 0.75rem;
    align-items: center;
}

.method-icons i {
    font-size: 1.5rem;
}

.method-icons .fab.fa-cc-visa {
    color: #1a1f71;
}

.method-icons .fab.fa-cc-mastercard {
    color: #eb001b;
}

.mpesa-icon, .emola-icon {
    width: 1.5rem;
    height: 1.5rem;
    border-radius: 0.25rem;
    display: flex;
    align-items: center;
    justify-content: center;
}

.mpesa-icon {
    background: #00a651;
}

.emola-icon {
    background: #ff6600;
}

.mpesa-icon i, .emola-icon i {
    color: white;
    font-size: 0.75rem;
}

.footer p {
    font-size: 0.75rem;
    color: #6b7280;
}

/* Error Messages */
.error-message {
    color: #dc2626;
    font-size: 0.75rem;
    margin-top: 0.25rem;
    display: none;
}

.error-message.show {
    display: block;
}

/* Loading State */
.loading {
    opacity: 0.6;
    pointer-events: none;
}

/* Success Modal */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    z-index: 1000;
    justify-content: center;
    align-items: center;
}

.modal.show {
    display: flex;
}

.modal-content {
    background: white;
    border-radius: 1rem;
    padding: 2rem;
    text-align: center;
    max-width: 300px;
    margin: 1rem;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
}

.modal-header {
    margin-bottom: 1rem;
}

.modal-header i {
    font-size: 3rem;
    color: #10b981;
    margin-bottom: 0.5rem;
    display: block;
}

.modal-header h2 {
    color: #1e293b;
    font-size: 1.25rem;
    font-weight: 600;
}

.modal-content p {
    color: #64748b;
    margin-bottom: 1.5rem;
}

.modal-btn {
    background: #2563eb;
    color: white;
    border: none;
    padding: 0.75rem 1.5rem;
    border-radius: 0.5rem;
    font-weight: 500;
    cursor: pointer;
    transition: background 0.2s ease;
}

.modal-btn:hover {
    background: #1d4ed8;
}

/* Responsive Design */
@media (max-width: 480px) {
    .container {
        padding: 1rem 0.5rem;
    }
    
    .header h1 {
        font-size: 1.5rem;
    }
    
    .payment-methods {
        grid-template-columns: 1fr;
    }
    
    .accepted-methods {
        flex-direction: column;
        gap: 0.5rem;
    }
}

/* Focus Styles for Accessibility */
*:focus {
    outline: 2px solid #2563eb;
    outline-offset: 2px;
}

input:focus, button:focus {
    outline: none;
}

/* Animation for form submission */
@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.5;
    }
}

.submit-btn.processing {
    animation: pulse 1s infinite;
}