/**
 * Datanovia Membership System - Frontend Styles (Namespaced)
 * 
 * Modern, beautiful, and conflict-free styling with dnv- prefixes
 */

/* ============================================================================
   CSS Variables for Easy Theming
   ============================================================================ */

   :root {
    /* Primary Colors */
    --datanovia-primary: #667eea;
    --datanovia-primary-dark: #5a67d8;
    --datanovia-secondary: #764ba2;
    
    /* Accent Colors */
    --datanovia-accent: #ff6b6b;
    --datanovia-accent-dark: #ff5252;
    --datanovia-accent-light: #ff8e53;
    
    /* Status Colors */
    --datanovia-success: #10b981;
    --datanovia-warning: #f59e0b;
    --datanovia-error: #ef4444;
    --datanovia-info: #3b82f6;
    
    /* Neutrals */
    --datanovia-white: #ffffff;
    --datanovia-gray-50: #f9fafb;
    --datanovia-gray-100: #f3f4f6;
    --datanovia-gray-200: #e5e7eb;
    --datanovia-gray-300: #d1d5db;
    --datanovia-gray-400: #9ca3af;
    --datanovia-gray-500: #6b7280;
    --datanovia-gray-600: #4b5563;
    --datanovia-gray-700: #374151;
    --datanovia-gray-800: #1f2937;
    --datanovia-gray-900: #111827;
    
    /* Spacing */
    --datanovia-spacing-xs: 0.25rem;
    --datanovia-spacing-sm: 0.5rem;
    --datanovia-spacing-md: 1rem;
    --datanovia-spacing-lg: 1.5rem;
    --datanovia-spacing-xl: 2rem;
    --datanovia-spacing-2xl: 3rem;
    
    /* Border Radius */
    --datanovia-radius-sm: 0.375rem;
    --datanovia-radius-md: 0.5rem;
    --datanovia-radius-lg: 0.75rem;
    --datanovia-radius-xl: 1rem;
    --datanovia-radius-2xl: 1.5rem;
    
    /* Shadows */
    --datanovia-shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --datanovia-shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --datanovia-shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --datanovia-shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --datanovia-shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    
    /* Transitions */
    --datanovia-transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --datanovia-transition-fast: all 0.15s cubic-bezier(0.4, 0, 0.2, 1);
    --datanovia-transition-slow: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ============================================================================
   Base Styles and Utilities
   ============================================================================ */

.datanovia-membership-system * {
    box-sizing: border-box;
}

.datanovia-membership-system {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    line-height: 1.6;
    color: var(--datanovia-gray-800);
}

/* ============================================================================
   Pricing Grid
   ============================================================================ */

.datanovia-pricing-grid {
    display: grid;
    gap: var(--datanovia-spacing-xl);
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--datanovia-spacing-xl);
}

.datanovia-pricing-grid[data-columns="1"] {
    grid-template-columns: 1fr;
    max-width: 400px;
}

.datanovia-pricing-grid[data-columns="2"] {
    grid-template-columns: repeat(2, 1fr);
    max-width: 800px;
}

.datanovia-pricing-grid[data-columns="3"] {
    grid-template-columns: repeat(3, 1fr);
}

.datanovia-pricing-grid[data-columns="4"] {
    grid-template-columns: repeat(4, 1fr);
}

.datanovia-pricing-grid[data-columns="auto"] {
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

/* Mobile responsiveness */
@media (max-width: 768px) {
    .datanovia-pricing-grid {
        grid-template-columns: 1fr !important;
        padding: var(--datanovia-spacing-md);
        gap: var(--datanovia-spacing-lg);
    }
}

/* ============================================================================
   Pricing Cards
   ============================================================================ */

.dnv-pricing-card {
    background: linear-gradient(135deg, var(--datanovia-primary) 0%, var(--datanovia-secondary) 100%);
    border-radius: var(--datanovia-radius-2xl);
    padding: var(--datanovia-spacing-2xl);
    color: var(--datanovia-white);
    position: relative;
    transform: translateY(0);
    transition: var(--datanovia-transition);
    box-shadow: var(--datanovia-shadow-lg);
    overflow: hidden;
}

.dnv-pricing-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.1) 0%, transparent 50%);
    pointer-events: none;
}

/* Card Hover Effects */
.dnv-pricing-card[data-animations="true"]:hover {
    transform: translateY(-10px);
    box-shadow: var(--datanovia-shadow-2xl);
}

/* Popular Card */
.dnv-pricing-card.popular {
    border: 3px solid #ffd700;
    transform: scale(1.05);
    z-index: 2;
}

.dnv-pricing-card.popular::after {
    content: '';
    position: absolute;
    top: -2px;
    left: -2px;
    right: -2px;
    bottom: -2px;
    background: linear-gradient(45deg, #ffd700, #ffed4e, #ffd700);
    border-radius: var(--datanovia-radius-2xl);
    z-index: -1;
    animation: dnv-shimmer 2s linear infinite;
}

@keyframes dnv-shimmer {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Current Level Card */
.dnv-pricing-card.current-level {
    background: linear-gradient(135deg, var(--datanovia-success) 0%, #059669 100%);
}

/* Upgrade Available Card */
.dnv-pricing-card.upgrade-available {
    background: linear-gradient(135deg, var(--datanovia-accent) 0%, var(--datanovia-accent-light) 100%);
}

/* Downgrade Card */
.dnv-pricing-card.downgrade {
    background: linear-gradient(135deg, var(--datanovia-gray-400) 0%, var(--datanovia-gray-500) 100%);
    opacity: 0.7;
}

/* ============================================================================
   Card Components
   ============================================================================ */

/* Popular Badge */
.dnv-popular-badge {
    position: absolute;
    top: -10px;
    left: 50%;
    transform: translateX(-50%);
    background: #ffd700;
    color: var(--datanovia-gray-800);
    padding: var(--datanovia-spacing-sm) var(--datanovia-spacing-lg);
    border-radius: var(--datanovia-radius-xl);
    font-weight: 700;
    font-size: 0.875rem;
    box-shadow: var(--datanovia-shadow-md);
    z-index: 3;
}

/* Card Header */
.dnv-card-header {
    text-align: center;
    margin-bottom: var(--datanovia-spacing-xl);
}

.dnv-level-name {
    font-size: 1.875rem;
    font-weight: 700;
    margin: 0 0 var(--datanovia-spacing-md) 0;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.dnv-price-display {
    margin: var(--datanovia-spacing-lg) 0;
}

.dnv-currency {
    font-size: 1.5rem;
    font-weight: 600;
    vertical-align: top;
}

.dnv-amount {
    font-size: 3rem;
    font-weight: 900;
    line-height: 1;
}

.dnv-period {
    font-size: 1.125rem;
    font-weight: 500;
    opacity: 0.9;
}

.dnv-level-badge {
    background: rgba(255, 255, 255, 0.2);
    color: var(--datanovia-white);
    padding: var(--datanovia-spacing-xs) var(--datanovia-spacing-md);
    border-radius: var(--datanovia-radius-lg);
    font-size: 0.875rem;
    font-weight: 600;
    display: inline-block;
    margin-top: var(--datanovia-spacing-sm);
}

.dnv-current-badge {
    background: var(--datanovia-success);
    color: var(--datanovia-white);
    padding: var(--datanovia-spacing-sm) var(--datanovia-spacing-md);
    border-radius: var(--datanovia-radius-lg);
    font-weight: 600;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--datanovia-spacing-xs);
    margin-top: var(--datanovia-spacing-md);
}

/* Card Features */
.dnv-card-features {
    margin: var(--datanovia-spacing-xl) 0;
}

.dnv-features-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.dnv-feature-item {
    display: flex;
    align-items: center;
    gap: var(--datanovia-spacing-sm);
    padding: var(--datanovia-spacing-sm) 0;
    font-size: 1rem;
    line-height: 1.5;
}

.dnv-feature-item .dnv-icon-check {
    color: #4ade80;
    font-weight: 700;
    font-size: 1.125rem;
}

.dnv-feature-item .dnv-icon-check::before {
    content: "✓";
}

/* Card Action */
.dnv-card-action {
    margin-top: var(--datanovia-spacing-xl);
}

.dnv-upgrade-info {
    text-align: center;
    margin-top: var(--datanovia-spacing-md);
    opacity: 0.9;
    font-size: 0.875rem;
}

/* ============================================================================
   Buttons
   ============================================================================ */

.dnv-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--datanovia-spacing-sm);
    padding: var(--datanovia-spacing-md) var(--datanovia-spacing-xl);
    border: none;
    border-radius: var(--datanovia-radius-xl);
    font-weight: 600;
    font-size: 1rem;
    line-height: 1.5;
    text-decoration: none;
    cursor: pointer;
    transition: var(--datanovia-transition);
    min-width: 120px;
    width: 100%;
}

/* Button Variants */
.dnv-btn-upgrade {
    background: linear-gradient(45deg, var(--datanovia-accent) 0%, var(--datanovia-accent-light) 100%);
    color: var(--datanovia-white);
    box-shadow: var(--datanovia-shadow-md);
}

.dnv-btn-upgrade:hover {
    transform: translateY(-2px);
    box-shadow: var(--datanovia-shadow-lg);
    background: linear-gradient(45deg, var(--datanovia-accent-dark) 0%, var(--datanovia-accent) 100%);
}

.dnv-btn-purchase {
    background: linear-gradient(45deg, var(--datanovia-primary) 0%, var(--datanovia-primary-dark) 100%);
    color: var(--datanovia-white);
    box-shadow: var(--datanovia-shadow-md);
}

.dnv-btn-purchase:hover {
    transform: translateY(-2px);
    box-shadow: var(--datanovia-shadow-lg);
}

.dnv-btn-current {
    background: var(--datanovia-success);
    color: var(--datanovia-white);
    cursor: default;
}

.dnv-btn-current.disabled {
    opacity: 0.8;
    transform: none !important;
}

.dnv-btn-downgrade {
    background: var(--datanovia-gray-400);
    color: var(--datanovia-white);
    cursor: not-allowed;
    opacity: 0.7;
}

.dnv-btn-login {
    background: var(--datanovia-info);
    color: var(--datanovia-white);
}

.dnv-btn-login:hover {
    background: #2563eb;
    transform: translateY(-2px);
}

/* Button Sizes */
.dnv-btn-sm {
    padding: var(--datanovia-spacing-sm) var(--datanovia-spacing-md);
    font-size: 0.875rem;
    min-width: 100px;
}

.dnv-btn-large {
    padding: var(--datanovia-spacing-lg) var(--datanovia-spacing-2xl);
    font-size: 1.125rem;
    min-width: 160px;
}

/* Button Loading State */
.dnv-btn-loader {
    display: flex;
    align-items: center;
    gap: var(--datanovia-spacing-xs);
}

.dnv-icon-spinner {
    animation: dnv-spin 1s linear infinite;
}

.dnv-icon-spinner::before {
    content: "⟳";
}

@keyframes dnv-spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

/* ============================================================================
   Payment Forms
   ============================================================================ */

.datanovia-payment-form-wrapper {
    max-width: 500px;
    margin: var(--datanovia-spacing-2xl) auto;
    position: relative;
}

/* Confirmation Banners */
.dnv-upgrade-confirmation-banner,
.dnv-purchase-confirmation-banner {
    background: linear-gradient(135deg, var(--datanovia-primary) 0%, var(--datanovia-secondary) 100%);
    color: var(--datanovia-white);
    padding: var(--datanovia-spacing-lg);
    border-radius: var(--datanovia-radius-lg);
    margin-bottom: var(--datanovia-spacing-lg);
    display: flex;
    align-items: center;
    gap: var(--datanovia-spacing-md);
}

.dnv-upgrade-icon,
.dnv-purchase-icon {
    font-size: 2rem;
    flex-shrink: 0;
}

.dnv-upgrade-message h4,
.dnv-purchase-message h4 {
    margin: 0 0 var(--datanovia-spacing-xs) 0;
    font-size: 1.25rem;
    font-weight: 700;
}

.dnv-upgrade-message p,
.dnv-purchase-message p {
    margin: 0;
    font-size: 1rem;
    line-height: 1.5;
}

.dnv-upgrade-note {
    font-size: 0.875rem;
    opacity: 0.9;
    margin-top: var(--datanovia-spacing-xs);
}

/* Payment Form Container */
.dnv-payment-form-container {
    background: var(--datanovia-white);
    border-radius: var(--datanovia-radius-lg);
    box-shadow: var(--datanovia-shadow-xl);
    overflow: hidden;
}

.dnv-payment-gateway-header {
    background: var(--datanovia-gray-50);
    padding: var(--datanovia-spacing-lg);
    border-bottom: 1px solid var(--datanovia-gray-200);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.dnv-gateway-logo {
    display: flex;
    align-items: center;
    gap: var(--datanovia-spacing-sm);
    font-weight: 600;
    color: var(--datanovia-gray-700);
}

.dnv-security-badges {
    display: flex;
    align-items: center;
    gap: var(--datanovia-spacing-xs);
    color: var(--datanovia-gray-500);
    font-size: 0.875rem;
}

.dnv-payment-form-content {
    padding: var(--datanovia-spacing-xl);
}

.dnv-payment-form-footer {
    background: var(--datanovia-gray-50);
    padding: var(--datanovia-spacing-lg);
    border-top: 1px solid var(--datanovia-gray-200);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--datanovia-spacing-md);
}

.dnv-satisfaction-guarantee,
.dnv-support-info {
    display: flex;
    align-items: center;
    gap: var(--datanovia-spacing-xs);
    font-size: 0.875rem;
    color: var(--datanovia-gray-600);
}

/* Loading Overlay */
.dnv-loading-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(255, 255, 255, 0.95);
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--datanovia-radius-lg);
    z-index: 1000;
}

.dnv-loading-spinner {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--datanovia-spacing-md);
    color: var(--datanovia-gray-600);
}

.dnv-loading-spinner .dnv-icon-spinner {
    font-size: 2rem;
}

/* ============================================================================
   Compact Pricing
   ============================================================================ */

.datanovia-compact-pricing {
    background: var(--datanovia-white);
    border: 2px solid var(--datanovia-gray-200);
    border-radius: var(--datanovia-radius-lg);
    padding: var(--datanovia-spacing-lg);
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: var(--datanovia-transition);
}

.datanovia-compact-pricing:hover {
    border-color: var(--datanovia-primary);
    box-shadow: var(--datanovia-shadow-md);
}

.dnv-compact-header {
    display: flex;
    flex-direction: column;
    gap: var(--datanovia-spacing-xs);
}

.dnv-compact-header .dnv-level-name {
    font-weight: 700;
    color: var(--datanovia-gray-800);
}

.dnv-compact-header .dnv-price {
    color: var(--datanovia-primary);
    font-weight: 600;
}

.dnv-compact-header .dnv-price small {
    color: var(--datanovia-gray-500);
    font-weight: 400;
}

/* ============================================================================
   Comparison Table
   ============================================================================ */

.datanovia-comparison-table {
    margin: var(--datanovia-spacing-2xl) 0;
    overflow-x: auto;
}

.dnv-pricing-comparison {
    width: 100%;
    border-collapse: collapse;
    background: var(--datanovia-white);
    border-radius: var(--datanovia-radius-lg);
    box-shadow: var(--datanovia-shadow-lg);
    overflow: hidden;
}

.dnv-pricing-comparison th,
.dnv-pricing-comparison td {
    padding: var(--datanovia-spacing-lg);
    text-align: center;
    border-bottom: 1px solid var(--datanovia-gray-200);
}

.dnv-pricing-comparison th {
    background: var(--datanovia-gray-50);
    font-weight: 700;
    color: var(--datanovia-gray-800);
}

.dnv-feature-column {
    text-align: left !important;
    font-weight: 600;
    background: var(--datanovia-white) !important;
}

.dnv-level-column {
    position: relative;
}

.dnv-level-header {
    text-align: center;
}

.dnv-level-header h4 {
    margin: 0 0 var(--datanovia-spacing-sm) 0;
    color: var(--datanovia-gray-800);
}

.dnv-level-header .dnv-price {
    color: var(--datanovia-primary);
    font-weight: 700;
}

.dnv-feature-check .dnv-icon-check {
    color: var(--datanovia-success);
    font-size: 1.25rem;
}

.dnv-feature-check .dnv-icon-minus {
    color: var(--datanovia-gray-300);
    font-size: 1.25rem;
}

.dnv-feature-check .dnv-icon-check::before {
    content: "✓";
}

.dnv-feature-check .dnv-icon-minus::before {
    content: "−";
}

.dnv-action-row td {
    padding-top: var(--datanovia-spacing-xl);
    border-bottom: none;
}

/* ============================================================================
   Membership Status
   ============================================================================ */

.datanovia-membership-status {
    background: var(--datanovia-white);
    border: 1px solid var(--datanovia-gray-200);
    border-radius: var(--datanovia-radius-lg);
    padding: var(--datanovia-spacing-xl);
    margin: var(--datanovia-spacing-lg) 0;
}

.datanovia-membership-status > div {
    margin-bottom: var(--datanovia-spacing-md);
}

.datanovia-membership-status > div:last-child {
    margin-bottom: 0;
}

.dnv-status-active {
    color: var(--datanovia-success);
    font-weight: 600;
}

.dnv-status-expired {
    color: var(--datanovia-error);
    font-weight: 600;
}

.dnv-upgrade-options {
    margin-top: var(--datanovia-spacing-lg);
    padding-top: var(--datanovia-spacing-lg);
    border-top: 1px solid var(--datanovia-gray-200);
}

.dnv-upgrade-option {
    margin: var(--datanovia-spacing-sm) 0;
}

/* ============================================================================
   Member/Guest Content
   ============================================================================ */

.datanovia-member-only {
    background: var(--datanovia-gray-50);
    border: 2px dashed var(--datanovia-gray-300);
    border-radius: var(--datanovia-radius-lg);
    padding: var(--datanovia-spacing-xl);
    text-align: center;
    margin: var(--datanovia-spacing-lg) 0;
}

.datanovia-guest-message {
    background: var(--datanovia-info);
    color: var(--datanovia-white);
    padding: var(--datanovia-spacing-lg);
    border-radius: var(--datanovia-radius-lg);
    margin: var(--datanovia-spacing-lg) 0;
}

/* ============================================================================
   Error Messages
   ============================================================================ */

.datanovia-error {
    background: var(--datanovia-error);
    color: var(--datanovia-white);
    padding: var(--datanovia-spacing-lg);
    border-radius: var(--datanovia-radius-lg);
    margin: var(--datanovia-spacing-lg) 0;
}

/* ============================================================================
   Icons
   ============================================================================ */

.dnv-icon-stripe::before {
    content: "💳";
}

.dnv-icon-paypal::before {
    content: "🅿️";
}

.dnv-icon-lock::before {
    content: "🔒";
}

.dnv-icon-shield::before {
    content: "🛡️";
}

.dnv-icon-times::before {
    content: "✖";
}

/* ============================================================================
   Payment Button Content
   ============================================================================ */

.dnv-btn-content {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--datanovia-spacing-xs);
    width: 100%;
}

.dnv-btn-text {
    flex: 1;
    text-align: center;
}

.dnv-btn-price {
    font-weight: 700;
    margin-left: var(--datanovia-spacing-sm);
}

/* ============================================================================
   Gateway Options
   ============================================================================ */

.dnv-gateway-option {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--datanovia-spacing-sm);
    padding: var(--datanovia-spacing-lg);
    border: 2px solid var(--datanovia-gray-200);
    border-radius: var(--datanovia-radius-lg);
    background: var(--datanovia-white);
    cursor: pointer;
    transition: var(--datanovia-transition);
    margin-bottom: var(--datanovia-spacing-md);
}

.dnv-gateway-option:hover {
    border-color: var(--datanovia-primary);
    box-shadow: var(--datanovia-shadow-md);
}

.dnv-gateway-option.selected {
    border-color: var(--datanovia-primary);
    background: var(--datanovia-gray-50);
}

/* ============================================================================
   Pricing Summary
   ============================================================================ */

.dnv-pricing-summary {
    background: var(--datanovia-gray-50);
    padding: var(--datanovia-spacing-lg);
    border-radius: var(--datanovia-radius-lg);
    margin-bottom: var(--datanovia-spacing-lg);
    text-align: center;
}

.dnv-pricing-summary .dnv-price-display {
    margin: 0;
}

.dnv-pricing-summary .dnv-amount {
    font-size: 2rem;
    color: var(--datanovia-primary);
}

.dnv-pricing-summary .dnv-period {
    color: var(--datanovia-gray-600);
}

/* ============================================================================
   Responsive Design
   ============================================================================ */

@media (max-width: 640px) {
    .dnv-pricing-card {
        padding: var(--datanovia-spacing-lg);
    }
    
    .dnv-amount {
        font-size: 2.5rem;
    }
    
    .dnv-level-name {
        font-size: 1.5rem;
    }
    
    .datanovia-payment-form-wrapper {
        margin: var(--datanovia-spacing-lg) var(--datanovia-spacing-md);
    }
    
    .dnv-payment-gateway-header {
        flex-direction: column;
        gap: var(--datanovia-spacing-sm);
        text-align: center;
    }
    
    .dnv-payment-form-footer {
        flex-direction: column;
        text-align: center;
    }
    
    .datanovia-comparison-table {
        font-size: 0.875rem;
    }
    
    .dnv-pricing-comparison th,
    .dnv-pricing-comparison td {
        padding: var(--datanovia-spacing-sm);
    }
}