/* === PREMIUM-SELECTOR.CSS ===
 * Премиум дизайн селектора периодов подписки
 * НАЗНАЧЕНИЕ: Стильный и современный выбор тарифов
 * ОБНОВЛЕНО: 2025-01-02
 */

/* === PREMIUM PERIOD SELECTOR === */
.premium-pricing-selector {
    max-width: 600px;
    margin: 0 auto 2rem;
    padding: 0 1rem;
}

.premium-period-grid {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.premium-period-item {
    position: relative;
    width: 100%;
    transition: all 0.3s ease;
    transform-origin: center;
}

.premium-period-item:hover {
    transform: scale(1.02);
}

.premium-period-radio {
    position: absolute;
    opacity: 0;
    pointer-events: none;
}

.premium-period-card {
    display: flex;
    align-items: center;
    padding: 1.25rem 1.5rem;
    background: linear-gradient(135deg, rgba(23, 23, 23, 0.8), rgba(23, 23, 23, 0.4));
    border: 2px solid rgba(59, 130, 246, 0.1);
    border-radius: 16px;
    cursor: pointer;
    position: relative;
    overflow: hidden;
    backdrop-filter: blur(10px);
    transition: all 0.3s ease;
}

.premium-period-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(90deg, transparent, rgba(59, 130, 246, 0.1), transparent);
    transform: translateX(-100%);
    transition: transform 0.6s ease;
}

.premium-period-card:hover::before {
    transform: translateX(100%);
}

.premium-period-card:hover {
    border-color: rgba(59, 130, 246, 0.3);
    background: linear-gradient(135deg, rgba(23, 23, 23, 0.9), rgba(59, 130, 246, 0.05));
    box-shadow: 0 10px 30px rgba(59, 130, 246, 0.2);
}

/* Checked State */
.premium-period-radio:checked + .premium-period-card {
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.15), rgba(139, 92, 246, 0.1));
    border-color: var(--ai-blue);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.2),
                0 15px 40px rgba(59, 130, 246, 0.3);
}

.premium-period-radio:checked + .premium-period-card .premium-check-icon {
    opacity: 1;
    transform: scale(1);
}

/* Check Icon */
.premium-check-icon {
    position: absolute;
    left: 1.5rem;
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--ai-blue), var(--ai-purple));
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transform: scale(0);
    transition: all 0.3s ease;
}

.premium-check-icon::after {
    content: '✓';
    color: white;
    font-size: 14px;
    font-weight: 800;
}

/* Content Layout */
.premium-period-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    padding-left: 3rem;
}

.premium-period-info {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

.premium-period-duration {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--text-primary);
    min-width: 100px;
}

.premium-period-price {
    font-size: 1.5rem;
    font-weight: 900;
    background: linear-gradient(90deg, var(--ai-blue), var(--ai-purple));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.premium-period-badge {
    padding: 0.35rem 0.75rem;
    background: linear-gradient(135deg, rgba(16, 185, 129, 0.2), rgba(16, 185, 129, 0.1));
    border: 1px solid rgba(16, 185, 129, 0.3);
    color: var(--ai-green);
    border-radius: 50px;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-left: auto;
    white-space: nowrap;
}

/* Popular Badge */
.premium-popular-badge {
    position: absolute;
    top: -1px;
    right: 20px;
    background: linear-gradient(135deg, #fbbf24, #f59e0b);
    color: #000;
    padding: 0.25rem 0.75rem;
    border-radius: 0 0 12px 12px;
    font-size: 0.7rem;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    box-shadow: 0 4px 15px rgba(251, 191, 36, 0.4);
}

/* Payment Button */
.premium-payment-button {
    width: 100%;
    padding: 1.25rem 2rem;
    margin-top: 2rem;
    font-size: 1.2rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--ai-blue), var(--ai-purple));
    color: white;
    border: none;
    border-radius: 16px;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 10px 30px rgba(59, 130, 246, 0.3);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    position: relative;
    overflow: hidden;
}

.premium-payment-button::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.2);
    transform: translate(-50%, -50%);
    transition: width 0.6s ease, height 0.6s ease;
}

.premium-payment-button:hover::before {
    width: 500px;
    height: 500px;
}

.premium-payment-button:hover {
    transform: translateY(-3px);
    box-shadow: 0 20px 40px rgba(59, 130, 246, 0.5);
}

/* Mobile Optimization */
@media (max-width: 768px) {
    .premium-period-card {
        padding: 1rem 1.25rem;
    }
    
    .premium-period-content {
        padding-left: 2.5rem;
    }
    
    .premium-check-icon {
        left: 1rem;
        width: 20px;
        height: 20px;
    }
    
    .premium-period-info {
        gap: 1rem;
    }
    
    .premium-period-duration {
        font-size: 0.95rem;
        min-width: 80px;
    }
    
    .premium-period-price {
        font-size: 1.25rem;
    }
    
    .premium-period-badge {
        padding: 0.25rem 0.5rem;
        font-size: 0.65rem;
    }
}

@media (max-width: 400px) {
    .premium-period-card {
        padding: 0.875rem 1rem;
    }
    
    .premium-period-duration {
        font-size: 0.85rem;
        min-width: 65px;
    }
    
    .premium-period-price {
        font-size: 1.1rem;
    }
}

/* Animation Classes */
@keyframes pulseGlow {
    0%, 100% { box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.2); }
    50% { box-shadow: 0 0 0 6px rgba(59, 130, 246, 0.1); }
}

.premium-period-radio:checked + .premium-period-card {
    animation: pulseGlow 2s infinite;
}

/* Features List Below */
.premium-features-preview {
    margin-top: 3rem;
    padding-top: 2rem;
    border-top: 1px solid rgba(59, 130, 246, 0.1);
}

.premium-features-title {
    text-align: center;
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-primary);
    opacity: 0.85;
    margin-bottom: 1.5rem;
}

.premium-features-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 0.75rem;
    opacity: 0.7;
}

.premium-feature-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.85rem;
    color: var(--text-primary);
}

.premium-feature-check {
    color: var(--ai-green);
    font-size: 1rem;
}

@media (max-width: 480px) {
    .premium-features-grid {
        grid-template-columns: 1fr;
    }
}