/* Reset & Base */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary: #6366f1;
    --primary-dark: #4f46e5;
    --secondary: #10b981;
    --accent: #f59e0b;
    --dark: #1f2937;
    --darker: #111827;
    --light: #f9fafb;
    --gray: #6b7280;
    --light-gray: #9ca3af;
    --border-radius: 12px;
    --shadow: 0 10px 25px rgba(0, 0, 0, 0.3);
    --shadow-hover: 0 15px 40px rgba(0, 0, 0, 0.4);
    --transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    overflow-x: hidden;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 14px 32px;
    border-radius: var(--border-radius);
    text-decoration: none;
    font-weight: 600;
    font-size: 1rem;
    transition: var(--transition);
    border: none;
    cursor: pointer;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(255,255,255,0.1) 0%, rgba(255,255,255,0) 100%);
    opacity: 0;
    transition: var(--transition);
}

.btn:hover::before {
    opacity: 1;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: white;
    box-shadow: var(--shadow);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-hover);
}

.btn-secondary {
    background: linear-gradient(135deg, var(--secondary) 0%, #0da271 100%);
    color: white;
    box-shadow: var(--shadow);
}

.btn-secondary:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-hover);
}

.btn-lg {
    padding: 16px 40px;
    font-size: 1.1rem;
}

.btn-block {
    width: 100%;
}

/* Navigation */
.main-nav {
    position: sticky;
    top: 0;
    z-index: 1000;
    padding: 20px 0;
    transition: var(--transition);
}

.main-nav.scrolled {
    background: rgba(17, 24, 39, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow);
    padding: 15px 0;
}

.nav-logo {
    font-size: 1.5rem;
    font-weight: bold;
    color: white;
    text-decoration: none;
    display: flex;
    align-items: center;
}

.nav-menu {
    display: flex;
    gap: 40px;
    list-style: none;
}

.nav-link {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    font-weight: 500;
    font-size: 1rem;
    transition: var(--transition);
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary);
    transition: var(--transition);
}

.nav-link:hover,
.nav-link.active {
    color: white;
}

.nav-link:hover::after,
.nav-link.active::after {
    width: 100%;
}

.nav-toggle {
    display: none;
    background: none;
    border: none;
    color: white;
    font-size: 1.5rem;
    cursor: pointer;
}

/* Page Header */
.page-header {
    text-align: center;
    margin-bottom: 60px;
}

.page-header h1 {
    font-size: 3rem;
    margin-bottom: 15px;
    color: white; /* Белый цвет */
}

.page-subtitle {
    font-size: 1.2rem;
    color: var(--light-gray);
    opacity: 0.8;
}

/* Cards */
.about-card,
.info-card {
    background: rgba(31, 41, 55, 0.6);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    padding: 40px;
    border-radius: var(--border-radius);
    transition: var(--transition);
    opacity: 0;
    transform: translateY(30px);
}

.about-card:hover,
.info-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-hover);
    border-color: rgba(99, 102, 241, 0.3);
}

.card-icon,
.info-icon {
    margin-bottom: 20px;
    color: var(--primary);
}

.card-icon i,
.info-icon i {
    filter: drop-shadow(0 5px 10px rgba(99, 102, 241, 0.3));
}

/* Footer */
.main-footer {
    background: rgba(17, 24, 39, 0.95);
    backdrop-filter: blur(10px);
    padding: 40px 0;
    margin-top: 80px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.main-footer p {
    color: var(--light-gray);
    text-align: center;
    margin-bottom: 20px;
    font-size: 0.95rem;
}

.social-links {
    display: flex;
    justify-content: center;
    gap: 25px;
}

.social-links a {
    color: var(--light-gray);
    font-size: 1.8rem;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.social-links a:hover {
    color: var(--primary);
    background: rgba(99, 102, 241, 0.1);
    transform: translateY(-3px);
    border-color: var(--primary);
}

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

@keyframes float {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-10px);
    }
}

@keyframes pulse {
    0%, 100% {
        transform: scale(1);
        opacity: 1;
    }
    50% {
        transform: scale(1.05);
        opacity: 0.8;
    }
}

/* Responsive */
@media (max-width: 768px) {
    .nav-menu {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: rgba(17, 24, 39, 0.95);
        flex-direction: column;
        padding: 30px;
        gap: 20px;
        box-shadow: var(--shadow);
    }

    .nav-menu.active {
        display: flex;
    }

    .nav-toggle {
        display: block;
    }

    .page-header h1 {
        font-size: 2rem;
    }

    .btn-lg {
        padding: 14px 28px;
        font-size: 1rem;
    }
}