/* Enhanced Payment Module - Modern Design System */

/* ==========================================================================
   CSS VARIABLES - ALIGNED WITH DESIGN SYSTEM
   ========================================================================== */

:root {
    /* Payment-specific Colors */
    --payment-primary: #2563eb;
    --payment-success: #10b981;
    --payment-warning: #f59e0b;
    --payment-danger: #ef4444;
    --payment-info: #3b82f6;
    
    /* Payment Background Colors */
    --payment-bg-primary: #ffffff;
    --payment-bg-secondary: #f8fafc;
    --payment-bg-accent: #f1f5f9;
    --payment-bg-success: #ecfdf5;
    --payment-bg-warning: #fffbeb;
    --payment-bg-danger: #fef2f2;
    
    /* Payment Text Colors */
    --payment-text-primary: #1e293b;
    --payment-text-secondary: #64748b;
    --payment-text-muted: #94a3b8;
    --payment-text-inverse: #ffffff;
    
    /* Payment Border Colors */
    --payment-border-light: #e2e8f0;
    --payment-border-medium: #cbd5e1;
    --payment-border-focus: #2563eb;
    --payment-border-success: #10b981;
    --payment-border-danger: #ef4444;
    
    /* Payment Shadows */
    --payment-shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --payment-shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --payment-shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --payment-shadow-focus: 0 0 0 3px rgba(37, 99, 235, 0.1);
    
    /* Payment Typography */
    --payment-font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --payment-font-size-xs: 0.75rem;
    --payment-font-size-sm: 0.875rem;
    --payment-font-size-base: 1rem;
    --payment-font-size-lg: 1.125rem;
    --payment-font-size-xl: 1.25rem;
    
    /* Payment Spacing */
    --payment-spacing-1: 0.25rem;
    --payment-spacing-2: 0.5rem;
    --payment-spacing-3: 0.75rem;
    --payment-spacing-4: 1rem;
    --payment-spacing-5: 1.25rem;
    --payment-spacing-6: 1.5rem;
    --payment-spacing-8: 2rem;
    
    /* Payment Border Radius */
    --payment-radius-sm: 0.25rem;
    --payment-radius-md: 0.5rem;
    --payment-radius-lg: 0.75rem;
    --payment-radius-xl: 1rem;
    
    /* Payment Transitions */
    --payment-transition-fast: all 0.15s ease-in-out;
    --payment-transition-base: all 0.2s ease-in-out;
    --payment-transition-slow: all 0.3s ease-in-out;
}

/* ==========================================================================
   PAYMENT SECTION CONTAINER
   ========================================================================== */

.payment-section-content {
    background: var(--payment-bg-primary);
    border-radius: var(--payment-radius-xl);
    border: 1px solid var(--payment-border-light);
    box-shadow: var(--payment-shadow-lg);
    overflow: hidden;
    margin: var(--payment-spacing-8) 0;
    font-family: var(--payment-font-family);
}

/* ==========================================================================
   PAYMENT PROGRESS INDICATOR
   ========================================================================== */

.payment-progress {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--payment-spacing-6);
    background: linear-gradient(135deg, var(--payment-bg-secondary) 0%, var(--payment-bg-accent) 100%);
    border-bottom: 1px solid var(--payment-border-light);
}

.progress-step {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--payment-spacing-2);
    position: relative;
}

.step-number {
    width: 2.5rem;
    height: 2.5rem;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--payment-font-size-sm);
    font-weight: 600;
    transition: var(--payment-transition-base);
}

.progress-step.completed .step-number {
    background: var(--payment-success);
    color: var(--payment-text-inverse);
    box-shadow: 0 4px 12px rgba(16, 185, 129, 0.3);
}

.progress-step.active .step-number {
    background: var(--payment-primary);
    color: var(--payment-text-inverse);
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
    animation: pulsePayment 2s ease-in-out infinite;
}

.step-label {
    font-size: var(--payment-font-size-xs);
    font-weight: 500;
    color: var(--payment-text-secondary);
    text-align: center;
}

.progress-step.completed .step-label,
.progress-step.active .step-label {
    color: var(--payment-text-primary);
    font-weight: 600;
}

.progress-connector {
    width: 3rem;
    height: 2px;
    background: var(--payment-border-medium);
    margin: 0 var(--payment-spacing-4);
    position: relative;
}

.progress-connector::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    height: 100%;
    width: 100%;
    background: var(--payment-success);
    transform: scaleX(1);
    transition: var(--payment-transition-slow);
}

/* ==========================================================================
   PAYMENT CONTAINER
   ========================================================================== */

.payment-container {
    display: grid;
    grid-template-columns: 1fr auto;
    gap: var(--payment-spacing-8);
    padding: var(--payment-spacing-8);
    align-items: start;
}

/* ==========================================================================
   PAYMENT FORM
   ========================================================================== */

.payment-form {
    min-width: 0; /* Prevents overflow */
}

.payment-field-group {
    margin-bottom: var(--payment-spacing-6);
}

.form-label {
    display: block;
    font-size: var(--payment-font-size-sm);
    font-weight: 600;
    color: var(--payment-text-primary);
    margin-bottom: var(--payment-spacing-3);
}

.payment-element-container {
    position: relative;
    background: var(--payment-bg-primary);
    border: 2px solid var(--payment-border-light);
    border-radius: var(--payment-radius-lg);
    padding: var(--payment-spacing-4);
    transition: var(--payment-transition-base);
}

.payment-element-container:hover {
    border-color: var(--payment-border-medium);
    box-shadow: var(--payment-shadow-sm);
}

.payment-element-container.focused {
    border-color: var(--payment-border-focus);
    box-shadow: var(--payment-shadow-focus);
}

.payment-element-container.error {
    border-color: var(--payment-border-danger);
    background: var(--payment-bg-danger);
}

.payment-element-container.complete {
    border-color: var(--payment-border-success);
    background: var(--payment-bg-success);
}

.stripe-payment-element {
    min-height: 3rem;
    position: relative;
}

/* Loading state for payment element */
.payment-element-container.loading::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 1.5rem;
    height: 1.5rem;
    border: 2px solid var(--payment-border-light);
    border-top: 2px solid var(--payment-primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

/* ==========================================================================
   PAYMENT SUMMARY BOX
   ========================================================================== */

.payment-summary-box {
    background: var(--payment-bg-secondary);
    border: 1px solid var(--payment-border-light);
    border-radius: var(--payment-radius-lg);
    padding: var(--payment-spacing-6);
    min-width: 280px;
    position: sticky;
    top: var(--payment-spacing-4);
}

.payment-summary-box h4 {
    font-size: var(--payment-font-size-lg);
    font-weight: 600;
    color: var(--payment-text-primary);
    margin: 0 0 var(--payment-spacing-4) 0;
    display: flex;
    align-items: center;
    gap: var(--payment-spacing-2);
}

.payment-summary-box h4::before {
    content: '🛡️';
    font-size: var(--payment-font-size-base);
}

.summary-line {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--payment-spacing-3) 0;
    border-bottom: 1px solid var(--payment-border-light);
    font-size: var(--payment-font-size-sm);
    color: var(--payment-text-secondary);
}

.summary-line.total {
    border-bottom: none;
    padding-top: var(--payment-spacing-4);
    font-size: var(--payment-font-size-base);
    color: var(--payment-text-primary);
    border-top: 2px solid var(--payment-border-medium);
}

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

/* ==========================================================================
   PAYMENT METHODS INFO
   ========================================================================== */

.payment-methods-info {
    padding: var(--payment-spacing-6) var(--payment-spacing-8);
    background: var(--payment-bg-accent);
    border-top: 1px solid var(--payment-border-light);
}

.methods-label {
    font-size: var(--payment-font-size-xs);
    font-weight: 500;
    color: var(--payment-text-secondary);
    margin: 0 0 var(--payment-spacing-3) 0;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.payment-methods {
    display: flex;
    flex-wrap: wrap;
    gap: var(--payment-spacing-2);
}

.payment-method {
    display: inline-flex;
    align-items: center;
    gap: var(--payment-spacing-1);
    padding: var(--payment-spacing-1) var(--payment-spacing-3);
    background: var(--payment-bg-primary);
    border: 1px solid var(--payment-border-light);
    border-radius: var(--payment-radius-md);
    font-size: var(--payment-font-size-xs);
    font-weight: 500;
    color: var(--payment-text-secondary);
    transition: var(--payment-transition-fast);
}

.payment-method:hover {
    border-color: var(--payment-border-medium);
    transform: translateY(-1px);
    box-shadow: var(--payment-shadow-sm);
}

/* Payment method icons */
.payment-method.visa::before { content: '💳'; }
.payment-method.mastercard::before { content: '🔲'; }
.payment-method.paypal::before { content: '🅿️'; }
.payment-method.apple-pay::before { content: '🍎'; }
.payment-method.google-pay::before { content: '🇬'; }

/* ==========================================================================
   PAYMENT SECURITY
   ========================================================================== */

.payment-security {
    padding: var(--payment-spacing-4) var(--payment-spacing-8);
    background: linear-gradient(135deg, var(--payment-bg-success) 0%, #f0fdf4 100%);
    border-top: 1px solid var(--payment-border-light);
}

.security-badges {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--payment-spacing-3);
    font-size: var(--payment-font-size-xs);
    color: var(--payment-text-secondary);
}

.security-badges::before {
    content: '🔒';
    font-size: var(--payment-font-size-sm);
}

.security-badges span {
    font-weight: 500;
}

/* ==========================================================================
   PAYMENT ERROR HANDLING
   ========================================================================== */

.form-error {
    margin-top: var(--payment-spacing-3);
    padding: var(--payment-spacing-3) var(--payment-spacing-4);
    background: var(--payment-bg-danger);
    border: 1px solid var(--payment-border-danger);
    border-radius: var(--payment-radius-md);
    font-size: var(--payment-font-size-sm);
    color: var(--payment-danger);
    display: flex;
    align-items: center;
    gap: var(--payment-spacing-2);
}

.form-error::before {
    content: '⚠️';
    font-size: var(--payment-font-size-sm);
}

/* ==========================================================================
   PAYMENT BUTTONS
   ========================================================================== */

.payment-submit-button {
    width: 100%;
    padding: var(--payment-spacing-4) var(--payment-spacing-6);
    background: linear-gradient(135deg, var(--payment-primary) 0%, #1d4ed8 100%);
    color: var(--payment-text-inverse);
    border: none;
    border-radius: var(--payment-radius-lg);
    font-size: var(--payment-font-size-base);
    font-weight: 600;
    cursor: pointer;
    transition: var(--payment-transition-base);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--payment-spacing-2);
    margin-top: var(--payment-spacing-6);
    box-shadow: var(--payment-shadow-md);
}

.payment-submit-button:hover:not(:disabled) {
    transform: translateY(-1px);
    box-shadow: var(--payment-shadow-lg);
}

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

.payment-submit-button.processing {
    background: var(--payment-text-muted);
    cursor: not-allowed;
}

.payment-submit-button.processing::after {
    content: '';
    width: 1rem;
    height: 1rem;
    border: 2px solid transparent;
    border-top: 2px solid var(--payment-text-inverse);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

/* ==========================================================================
   PAYMENT SUCCESS/CONFIRMATION
   ========================================================================== */

.payment-success {
    padding: var(--payment-spacing-8);
    text-align: center;
    background: var(--payment-bg-success);
    border: 1px solid var(--payment-border-success);
    border-radius: var(--payment-radius-lg);
    margin: var(--payment-spacing-6) 0;
}

.payment-success-icon {
    font-size: 3rem;
    margin-bottom: var(--payment-spacing-4);
    animation: bounceIn 0.6s ease-out;
}

.payment-success h3 {
    color: var(--payment-success);
    font-size: var(--payment-font-size-xl);
    font-weight: 600;
    margin-bottom: var(--payment-spacing-2);
}

.payment-success p {
    color: var(--payment-text-secondary);
    margin: 0;
}

/* ==========================================================================
   ANIMATIONS
   ========================================================================== */

@keyframes pulsePayment {
    0%, 100% {
        transform: scale(1);
        box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
    }
    50% {
        transform: scale(1.05);
        box-shadow: 0 6px 16px rgba(37, 99, 235, 0.4);
    }
}

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

@keyframes bounceIn {
    0% {
        opacity: 0;
        transform: scale(0.3);
    }
    50% {
        opacity: 1;
        transform: scale(1.05);
    }
    70% {
        transform: scale(0.9);
    }
    100% {
        opacity: 1;
        transform: scale(1);
    }
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ==========================================================================
   RESPONSIVE DESIGN
   ========================================================================== */

@media (max-width: 768px) {
    .payment-container {
        grid-template-columns: 1fr;
        gap: var(--payment-spacing-6);
    }
    
    .payment-summary-box {
        position: static;
        min-width: auto;
        order: -1; /* Show summary first on mobile */
    }
    
    .payment-methods {
        justify-content: center;
    }
    
    .progress-step {
        gap: var(--payment-spacing-1);
    }
    
    .step-label {
        font-size: 0.625rem;
    }
    
    .progress-connector {
        width: 2rem;
        margin: 0 var(--payment-spacing-2);
    }
}

@media (max-width: 480px) {
    .payment-section-content {
        margin: var(--payment-spacing-4) 0;
        border-radius: var(--payment-radius-lg);
    }
    
    .payment-container {
        padding: var(--payment-spacing-4);
    }
    
    .payment-progress {
        padding: var(--payment-spacing-4);
    }
    
    .payment-methods-info,
    .payment-security {
        padding: var(--payment-spacing-4);
    }
}

/* ==========================================================================
   ACCESSIBILITY ENHANCEMENTS
   ========================================================================== */

@media (prefers-reduced-motion: reduce) {
    .step-number,
    .payment-submit-button,
    .payment-method {
        animation: none;
        transition: none;
    }
    
    .payment-submit-button:hover {
        transform: none;
    }
}

@media (prefers-contrast: high) {
    .payment-element-container {
        border-width: 3px;
    }
    
    .payment-summary-box {
        border-width: 2px;
    }
}

/* Focus management for keyboard navigation */
.payment-element-container:focus-within {
    outline: 2px solid var(--payment-border-focus);
    outline-offset: 2px;
}

.payment-submit-button:focus {
    outline: 2px solid var(--payment-border-focus);
    outline-offset: 2px;
}

/* ==========================================================================
   DARK MODE SUPPORT
   ========================================================================== */

@media (prefers-color-scheme: dark) {
    :root {
        --payment-bg-primary: #1e293b;
        --payment-bg-secondary: #334155;
        --payment-bg-accent: #475569;
        --payment-text-primary: #f1f5f9;
        --payment-text-secondary: #cbd5e1;
        --payment-text-muted: #94a3b8;
        --payment-border-light: #475569;
        --payment-border-medium: #64748b;
    }
}

/* Force dark mode class support */
.dark-mode .payment-section-content {
    background: var(--payment-bg-primary);
    color: var(--payment-text-primary);
}

.dark-mode .payment-summary-box {
    background: var(--payment-bg-secondary);
    border-color: var(--payment-border-light);
}

.dark-mode .payment-method {
    background: var(--payment-bg-secondary);
    border-color: var(--payment-border-light);
    color: var(--payment-text-secondary);
}