/**
 * Subscribe page styles for prixcut
 * TASK-10-63: YooKassa payment integration
 * 
 * Covers:
 * - /subscribe - Subscription selection page
 * - /payment/checkout - Mock payment checkout
 * - /payment/success - Success page
 * - /payment/failed - Failed page
 */

/* ==========================================
   CSS Variables
   ========================================== */
:root {
    --subscribe-bg: #0a0a0f;
    --subscribe-card-bg: #12121a;
    --subscribe-card-border: #1f1f2e;
    --subscribe-card-featured: #1a1a2e;
    --subscribe-primary: #6366f1;
    --subscribe-primary-hover: #818cf8;
    --subscribe-text: #e5e5e5;
    --subscribe-text-muted: #888;
    --subscribe-success: #22c55e;
    --subscribe-error: #ef4444;
    --subscribe-warning: #f59e0b;
    --subscribe-border-radius: 16px;
    --subscribe-shadow: 0 4px 24px rgba(0, 0, 0, 0.3);
}

/* ==========================================
   Base Page Styles
   ========================================== */
.subscribe-page,
.checkout-page,
.payment-result-page {
    background: var(--subscribe-bg);
    min-height: 100vh;
    color: var(--subscribe-text);
    font-family: 'SF Pro Display', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

.subscribe-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 40px 24px;
}

/* ==========================================
   Navigation
   ========================================== */
.subscribe-nav {
    background: rgba(18, 18, 26, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--subscribe-card-border);
    padding: 16px 24px;
    position: sticky;
    top: 0;
    z-index: 100;
}

.subscribe-nav-inner {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.subscribe-nav-logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--subscribe-text);
    text-decoration: none;
}

.subscribe-nav-links {
    display: flex;
    gap: 24px;
    align-items: center;
}

.subscribe-nav-links a {
    color: var(--subscribe-text-muted);
    text-decoration: none;
    transition: color 0.2s;
}

.subscribe-nav-links a:hover {
    color: var(--subscribe-text);
}

.subscribe-nav-links .nav-btn {
    background: var(--subscribe-primary);
    color: white;
    padding: 8px 16px;
    border-radius: 8px;
    font-weight: 500;
}

.subscribe-nav-links .nav-btn:hover {
    background: var(--subscribe-primary-hover);
}

/* ==========================================
   Page Header
   ========================================== */
.subscribe-header {
    text-align: center;
    margin-bottom: 48px;
}

.subscribe-header h1 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 16px;
    background: linear-gradient(135deg, #fff, #888);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.subscribe-header p {
    color: var(--subscribe-text-muted);
    font-size: 1.125rem;
    max-width: 600px;
    margin: 0 auto;
}

/* Current Plan Badge */
.current-plan-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(99, 102, 241, 0.15);
    border: 1px solid var(--subscribe-primary);
    padding: 8px 16px;
    border-radius: 20px;
    margin-bottom: 24px;
    font-size: 0.875rem;
}

.current-plan-badge .plan-name {
    font-weight: 600;
    color: var(--subscribe-primary);
}

/* ==========================================
   Period Toggle
   ========================================== */
.period-toggle {
    display: flex;
    justify-content: center;
    gap: 8px;
    margin-bottom: 40px;
    background: var(--subscribe-card-bg);
    padding: 6px;
    border-radius: 12px;
    width: fit-content;
    margin-left: auto;
    margin-right: auto;
}

.period-toggle button {
    background: transparent;
    border: none;
    color: var(--subscribe-text-muted);
    padding: 10px 20px;
    border-radius: 8px;
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
}

.period-toggle button.active {
    background: var(--subscribe-primary);
    color: white;
}

.period-toggle button:hover:not(.active) {
    color: var(--subscribe-text);
}

.period-toggle .discount-badge {
    background: var(--subscribe-success);
    color: white;
    font-size: 0.7rem;
    padding: 2px 6px;
    border-radius: 4px;
    margin-left: 6px;
}

/* ==========================================
   Pricing Cards
   ========================================== */
.subscribe-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 24px;
    max-width: 1000px;
    margin: 0 auto;
}

.subscribe-card {
    background: var(--subscribe-card-bg);
    border: 1px solid var(--subscribe-card-border);
    border-radius: var(--subscribe-border-radius);
    padding: 32px;
    position: relative;
    transition: transform 0.3s, box-shadow 0.3s;
}

.subscribe-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--subscribe-shadow);
}

.subscribe-card.featured {
    background: var(--subscribe-card-featured);
    border-color: var(--subscribe-primary);
    box-shadow: 0 0 40px rgba(99, 102, 241, 0.2);
}

.subscribe-card.current {
    border-color: var(--subscribe-success);
}

.subscribe-badge {
    position: absolute;
    top: -12px;
    right: 24px;
    background: var(--subscribe-primary);
    color: white;
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
}

.subscribe-badge.current-badge {
    background: var(--subscribe-success);
}

/* Card Header */
.subscribe-card-header {
    text-align: center;
    margin-bottom: 24px;
}

.subscribe-card-header h3 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 16px;
}

.subscribe-price {
    font-size: 3rem;
    font-weight: 700;
    line-height: 1;
}

.subscribe-price .currency {
    font-size: 1.5rem;
    color: var(--subscribe-text-muted);
}

.subscribe-price .period {
    font-size: 1rem;
    color: var(--subscribe-text-muted);
    font-weight: 400;
}

.subscribe-price-note {
    color: var(--subscribe-text-muted);
    font-size: 0.875rem;
    margin-top: 8px;
}

.subscribe-price-note .original-price {
    text-decoration: line-through;
    margin-right: 8px;
}

/* Features List */
.subscribe-features {
    list-style: none;
    padding: 0;
    margin: 0 0 32px 0;
}

.subscribe-features li {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    padding: 10px 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.subscribe-features li:last-child {
    border-bottom: none;
}

.subscribe-features .check {
    color: var(--subscribe-success);
    font-size: 1.125rem;
    flex-shrink: 0;
}

.subscribe-features .cross {
    color: var(--subscribe-text-muted);
    font-size: 1.125rem;
    flex-shrink: 0;
}

.subscribe-features .disabled {
    color: var(--subscribe-text-muted);
}

.subscribe-features .feature-value {
    color: var(--subscribe-primary);
    font-weight: 500;
}

/* CTA Button */
.subscribe-btn {
    display: block;
    width: 100%;
    padding: 14px 24px;
    border-radius: 10px;
    font-size: 1rem;
    font-weight: 600;
    text-align: center;
    text-decoration: none;
    cursor: pointer;
    transition: all 0.2s;
    border: none;
}

.subscribe-btn-primary {
    background: var(--subscribe-primary);
    color: white;
}

.subscribe-btn-primary:hover {
    background: var(--subscribe-primary-hover);
    transform: scale(1.02);
}

.subscribe-btn-secondary {
    background: transparent;
    border: 1px solid var(--subscribe-card-border);
    color: var(--subscribe-text);
}

.subscribe-btn-secondary:hover {
    border-color: var(--subscribe-text-muted);
}

.subscribe-btn-current {
    background: rgba(34, 197, 94, 0.15);
    border: 1px solid var(--subscribe-success);
    color: var(--subscribe-success);
    cursor: default;
}

.subscribe-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* ==========================================
   Mock Checkout Page
   ========================================== */
.checkout-container {
    max-width: 500px;
    margin: 60px auto;
    padding: 0 24px;
}

.checkout-card {
    background: var(--subscribe-card-bg);
    border: 1px solid var(--subscribe-card-border);
    border-radius: var(--subscribe-border-radius);
    padding: 40px;
    text-align: center;
}

.checkout-logo {
    font-size: 2rem;
    margin-bottom: 24px;
}

.checkout-title {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 8px;
}

.checkout-description {
    color: var(--subscribe-text-muted);
    margin-bottom: 32px;
}

.checkout-amount {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 8px;
}

.checkout-currency {
    color: var(--subscribe-text-muted);
    margin-bottom: 32px;
}

.checkout-divider {
    height: 1px;
    background: var(--subscribe-card-border);
    margin: 32px 0;
}

.checkout-methods {
    margin-bottom: 24px;
}

.checkout-methods-title {
    font-size: 0.875rem;
    color: var(--subscribe-text-muted);
    margin-bottom: 16px;
}

.checkout-methods-icons {
    display: flex;
    justify-content: center;
    gap: 16px;
}

.checkout-method-icon {
    width: 50px;
    height: 32px;
    background: #1f1f2e;
    border-radius: 6px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.75rem;
    color: var(--subscribe-text-muted);
}

.checkout-buttons {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.checkout-btn-pay {
    background: var(--subscribe-success);
    color: white;
    padding: 16px 24px;
    border-radius: 10px;
    font-size: 1rem;
    font-weight: 600;
    border: none;
    cursor: pointer;
    transition: all 0.2s;
}

.checkout-btn-pay:hover {
    background: #16a34a;
    transform: scale(1.02);
}

.checkout-btn-cancel {
    background: transparent;
    border: 1px solid var(--subscribe-card-border);
    color: var(--subscribe-text-muted);
    padding: 14px 24px;
    border-radius: 10px;
    font-size: 0.875rem;
    cursor: pointer;
    transition: all 0.2s;
}

.checkout-btn-cancel:hover {
    border-color: var(--subscribe-error);
    color: var(--subscribe-error);
}

.checkout-notice {
    margin-top: 24px;
    padding: 16px;
    background: rgba(245, 158, 11, 0.1);
    border: 1px solid var(--subscribe-warning);
    border-radius: 8px;
    font-size: 0.75rem;
    color: var(--subscribe-warning);
}

/* ==========================================
   Payment Result Pages
   ========================================== */
.result-container {
    max-width: 500px;
    margin: 80px auto;
    padding: 0 24px;
    text-align: center;
}

.result-icon {
    font-size: 5rem;
    margin-bottom: 24px;
}

.result-icon.success {
    color: var(--subscribe-success);
}

.result-icon.error {
    color: var(--subscribe-error);
}

.result-title {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 16px;
}

.result-description {
    color: var(--subscribe-text-muted);
    font-size: 1.125rem;
    margin-bottom: 32px;
    line-height: 1.6;
}

.result-details {
    background: var(--subscribe-card-bg);
    border: 1px solid var(--subscribe-card-border);
    border-radius: 12px;
    padding: 24px;
    margin-bottom: 32px;
    text-align: left;
}

.result-details-row {
    display: flex;
    justify-content: space-between;
    padding: 12px 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.result-details-row:last-child {
    border-bottom: none;
}

.result-details-label {
    color: var(--subscribe-text-muted);
}

.result-details-value {
    font-weight: 500;
}

.result-buttons {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.result-btn {
    padding: 14px 24px;
    border-radius: 10px;
    font-size: 1rem;
    font-weight: 600;
    text-decoration: none;
    text-align: center;
    cursor: pointer;
    transition: all 0.2s;
    border: none;
}

.result-btn-primary {
    background: var(--subscribe-primary);
    color: white;
}

.result-btn-primary:hover {
    background: var(--subscribe-primary-hover);
}

.result-btn-secondary {
    background: transparent;
    border: 1px solid var(--subscribe-card-border);
    color: var(--subscribe-text);
}

.result-btn-secondary:hover {
    border-color: var(--subscribe-text-muted);
}

/* ==========================================
   Loading States
   ========================================== */
.subscribe-loading {
    text-align: center;
    padding: 60px 24px;
}

.subscribe-spinner {
    width: 48px;
    height: 48px;
    border: 3px solid var(--subscribe-card-border);
    border-top-color: var(--subscribe-primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto 16px;
}

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

/* ==========================================
   Error States
   ========================================== */
.subscribe-error {
    text-align: center;
    padding: 40px 24px;
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid var(--subscribe-error);
    border-radius: 12px;
    margin: 24px 0;
}

.subscribe-error-icon {
    font-size: 3rem;
    margin-bottom: 16px;
}

.subscribe-error-title {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 8px;
}

.subscribe-error-message {
    color: var(--subscribe-text-muted);
}

/* ==========================================
   Responsive
   ========================================== */
@media (max-width: 768px) {
    .subscribe-header h1 {
        font-size: 2rem;
    }
    
    .subscribe-cards {
        grid-template-columns: 1fr;
    }
    
    .subscribe-card {
        padding: 24px;
    }
    
    .subscribe-price {
        font-size: 2.5rem;
    }
    
    .subscribe-nav-links {
        display: none;
    }
    
    .checkout-card {
        padding: 24px;
    }
    
    .checkout-amount {
        font-size: 2.5rem;
    }
}

/* ==========================================
   Footer
   ========================================== */
.subscribe-footer {
    text-align: center;
    padding: 40px 24px;
    color: var(--subscribe-text-muted);
    font-size: 0.875rem;
}

.subscribe-footer a {
    color: var(--subscribe-text-muted);
    text-decoration: none;
}

.subscribe-footer a:hover {
    color: var(--subscribe-text);
}

.subscribe-footer-links {
    display: flex;
    justify-content: center;
    gap: 24px;
    margin-bottom: 16px;
}