/**
 * ========================================
 * DESIGN ENHANCEMENTS
 * ========================================
 * 
 * Дополнительные улучшения поверх design-system.css.
 * НЕ дублирует базовые стили - только расширяет.
 * 
 * Содержит:
 * - Улучшенные эффекты для карточек
 * - Анимации появления
 * - Градиенты и decorative elements
 * - Grid-системы для контента
 */

/* ========================================
   ENHANCED CARD EFFECTS
   ======================================== */

/* Gradient border effect on hover */
.content-card-item::before,
.card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--gradient-brand);
    opacity: 0;
    transition: opacity 0.4s ease;
}

.content-card-item:hover::before,
.card:hover::before {
    opacity: 1;
}

/* Glass effect */
.content-card-item,
.card {
    backdrop-filter: blur(10px) saturate(180%);
}

/* ========================================
   ENHANCED BUTTONS
   ======================================== */

/* Ripple effect for primary buttons */
.page-btn,
.btn-primary {
    position: relative;
    overflow: hidden;
}

.page-btn::after,
.btn-primary::after {
    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, height 0.6s;
}

.page-btn:hover::after,
.btn-primary:hover::after {
    width: 300px;
    height: 300px;
}

/* Outline button variant */
.page-btn-outline {
    background: transparent;
    border: 2px solid var(--brand-primary);
    color: var(--brand-primary);
    box-shadow: none;
}

.page-btn-outline:hover {
    background: var(--brand-primary);
    color: white;
    box-shadow: 0 4px 14px 0 rgba(0, 122, 255, 0.3);
}

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

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes scaleIn {
    from {
        opacity: 0;
        transform: scale(0.9);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

/* Staggered card animations */
.content-card-item {
    animation: fadeInUp 0.6s ease backwards;
}

.content-card-item:nth-child(1) { animation-delay: 0.1s; }
.content-card-item:nth-child(2) { animation-delay: 0.2s; }
.content-card-item:nth-child(3) { animation-delay: 0.3s; }
.content-card-item:nth-child(4) { animation-delay: 0.4s; }
.content-card-item:nth-child(5) { animation-delay: 0.5s; }
.content-card-item:nth-child(6) { animation-delay: 0.6s; }

/* ========================================
   CONTENT GRIDS
   ======================================== */

.stats-grid,
.benefits-grid,
.pricing-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
    margin-top: 1.5rem;
}

/* Stat/Benefit cards */
.stat-card,
.benefit-card {
    background: var(--surface-primary);
    border: 1px solid var(--border-primary);
    border-radius: 16px;
    padding: 1.5rem;
    transition: all 0.3s ease;
    text-align: center;
}

.stat-card:hover,
.benefit-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 24px rgba(0, 0, 0, 0.1);
    border-color: var(--brand-primary);
}

/* Icon containers */
.stat-icon,
.benefit-icon {
    width: 60px;
    height: 60px;
    background: var(--gradient-brand);
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1rem;
    box-shadow: 0 4px 12px rgba(0, 122, 255, 0.3);
}

.stat-icon i,
.benefit-icon i {
    color: white;
    font-size: 1.5rem;
}

.stat-value {
    font-size: 2rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.stat-label {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

/* ========================================
   SECTION DIVIDERS
   ======================================== */

.section-divider {
    margin: 2.5rem 0;
    height: 1px;
    background: linear-gradient(
        90deg,
        transparent,
        var(--border-primary),
        transparent
    );
    position: relative;
}

.section-divider::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 8px;
    height: 8px;
    background: var(--brand-primary);
    border-radius: 50%;
    box-shadow: 0 0 0 4px var(--surface-primary);
}

/* ========================================
   SECTION TITLES
   ======================================== */

.section-title {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 1.5rem;
}

.section-title-icon {
    color: var(--brand-primary);
    font-size: 1.25rem;
}

.section-title-large {
    font-size: 2rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.section-subtitle {
    color: var(--text-secondary);
    font-size: 1.1rem;
    margin-bottom: 2rem;
}

/* ========================================
   ICON HOVER EFFECTS
   ======================================== */

i.fas,
i.far,
i.fab {
    transition: transform 0.3s ease;
}

.page-btn:hover i,
.btn-primary:hover i {
    transform: scale(1.1);
}

.content-card-item:hover .fa-arrow-right {
    transform: translateX(5px);
}

/* ========================================
   GRADIENT TEXT
   ======================================== */

.gradient-text {
    background: var(--gradient-brand);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* ========================================
   RESPONSIVE ADJUSTMENTS
   ======================================== */

@media (max-width: 768px) {
    .content-card-item,
    .card {
        padding: 1.5rem;
        border-radius: 16px;
    }
    
    .stats-grid,
    .benefits-grid,
    .pricing-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    
    .page-btn {
        padding: 0.75rem 1.5rem;
        font-size: 0.95rem;
    }
}

/* ========================================
   REDUCED MOTION SUPPORT
   ======================================== */

@media (prefers-reduced-motion: reduce) {
    .content-card-item,
    .stat-card,
    .benefit-card {
        animation: none;
    }
    
    .page-btn::after,
    .btn-primary::after {
        transition: none;
    }
}