/* CSS Variables для премиального дизайна */
:root {
    --primary-dark: #0a192f;
    --primary-light: #e6f1ff;
    --accent: #ffd700;
    /* Золотой акцент для финансов */
    --accent-hover: #ffea70;
    --text-main: #333333;
    --text-muted: #6c757d;
    --bg-light: #f8f9fa;
    --transition-speed: 0.4s;
}

/* Глобальные настройки */
html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
    color: var(--text-main);
    overflow-x: hidden;
}

/* Утилиты */
.text-primary-dark {
    color: var(--primary-dark) !important;
}

.text-accent {
    color: var(--accent) !important;
}

.bg-primary-dark {
    background-color: var(--primary-dark) !important;
}

.bg-primary-light {
    background-color: var(--primary-light) !important;
}

.bg-accent {
    background-color: var(--accent) !important;
}

.py-6 {
    padding-top: 5rem;
    padding-bottom: 5rem;
}

.max-w-700 {
    max-width: 700px;
}

.max-w-500 {
    max-width: 500px;
}

.tracking-wide {
    letter-spacing: 0.1em;
}

/* Кнопки */
.btn-accent {
    background-color: var(--accent);
    color: var(--primary-dark);
    border: none;
    transition: background-color var(--transition-speed) ease, transform 0.2s ease;
}

.btn-accent:hover {
    background-color: var(--accent-hover);
    color: var(--primary-dark);
    transform: translateY(-2px);
}

.btn-outline-primary-dark {
    border: 2px solid var(--primary-dark);
    color: var(--primary-dark);
    transition: all var(--transition-speed) ease;
}

.btn-outline-primary-dark:hover {
    background-color: var(--primary-dark);
    color: #fff;
}

/* Навигация */
.navbar {
    padding: 1.5rem 0;
    transition: all var(--transition-speed) ease;
}

.navbar.scrolled {
    padding: 0.8rem 0;
    background-color: rgba(10, 25, 47, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
}

.navbar-nav .nav-link {
    color: rgba(255, 255, 255, 0.8) !important;
    font-weight: 500;
    margin: 0 10px;
    transition: color 0.3s ease;
}

.navbar-nav .nav-link:hover,
.navbar-nav .nav-link.active {
    color: var(--accent) !important;
}

.navbar.scrolled .btn-accent {
    padding-top: 0.5rem;
    padding-bottom: 0.5rem;
}

/* Hero Секция */
.hero-section {
    position: relative;
    height: 100vh;
    min-height: 600px;
    background: url('https://images.unsplash.com/photo-1486406146926-c627a92ad1ab?q=80&w=2070&auto=format&fit=crop') center/cover no-repeat;
}

.hero-section .overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(10, 25, 47, 0.9) 0%, rgba(10, 25, 47, 0.6) 100%);
    z-index: 1;
}

/* Карточки */
.premium-card {
    transition: transform var(--transition-speed) ease, box-shadow var(--transition-speed) ease;
    border-radius: 12px;
}

.premium-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.08) !important;
}

.icon-box {
    width: 60px;
    height: 60px;
}

/* Декоратор секции */
.divider {
    height: 3px;
    width: 60px;
    border-radius: 3px;
}

/* CTA Секция */
.cta-section {
    position: relative;
    background: url('https://images.unsplash.com/photo-1579532537598-459ecdaf39cc?q=80&w=2000&auto=format&fit=crop') center/cover fixed;
}

.cta-section .overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

/* Back to Top */
#backToTop {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    z-index: 1000;
}

#backToTop.visible {
    opacity: 1;
    visibility: visible;
}

/* --- Анимации Intersection Observer --- */
.animate-on-scroll {
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.8s ease-out, transform 0.8s ease-out, visibility 0.8s;
    will-change: opacity, transform;
}

.animate-on-scroll.is-visible {
    opacity: 1;
    visibility: visible;
    transform: none;
}

.fade-up {
    transform: translateY(40px);
}

.fade-right {
    transform: translateX(-40px);
}

.fade-left {
    transform: translateX(40px);
}

/* Адаптивность */
@media (max-width: 991px) {
    .navbar {
        background-color: var(--primary-dark);
        padding: 1rem 0;
    }

    .hero-section {
        height: auto;
        padding: 150px 0 100px;
        text-align: center;
    }

    .image-wrapper {
        margin-top: 3rem;
    }
}