@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Outfit:wght@400;500;600;700;800&display=swap');

:root {
    --bg-dark: #f8fafc;
    --bg-card: rgba(255, 255, 255, 0.75);
    --border-color: rgba(15, 23, 42, 0.08);
    --border-glow: rgba(2, 132, 199, 0.25);
    
    --primary: #0284c7;
    --primary-glow: rgba(2, 132, 199, 0.25);
    --secondary: #4f46e5;
    --secondary-glow: rgba(79, 70, 229, 0.25);
    --accent: #3b82f6;
    
    --text-main: #0f172a;
    --text-muted: #475569;
    
    --font-heading: 'Outfit', sans-serif;
    --font-body: 'Inter', sans-serif;
    
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    background-color: var(--bg-dark);
    color: var(--text-main);
    font-family: var(--font-body);
    line-height: 1.6;
    overflow-x: hidden;
    position: relative;
}

/* Glowing mesh backgrounds */
.glow-bg {
    position: absolute;
    width: 600px;
    height: 600px;
    border-radius: 50%;
    filter: blur(140px);
    z-index: -1;
    pointer-events: none;
    opacity: 0.12;
    animation: floatGlow 12s ease-in-out infinite alternate;
}

.glow-primary {
    background: radial-gradient(circle, var(--primary) 0%, transparent 70%);
    top: -200px;
    right: -100px;
}

.glow-secondary {
    background: radial-gradient(circle, var(--secondary) 0%, transparent 70%);
    bottom: -100px;
    left: -200px;
}

@keyframes floatGlow {
    0% {
        transform: translate(0, 0) scale(1);
    }
    100% {
        transform: translate(80px, 50px) scale(1.15);
    }
}

/* Floating Glass Navbar */
header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    padding: 1.2rem 2rem;
    transition: var(--transition);
}

.glass-nav {
    background: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--border-color);
    border-radius: 50px;
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.8rem 2.5rem;
    box-shadow: 0 10px 30px rgba(15, 23, 42, 0.05);
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.8rem;
    font-family: var(--font-heading);
    font-size: 1.6rem;
    font-weight: 800;
    letter-spacing: 1px;
    color: var(--text-main);
    text-decoration: none;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.logo img {
    height: 35px;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 2.2rem;
}

.nav-links a {
    color: var(--text-muted);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.95rem;
    transition: var(--transition);
    position: relative;
    padding: 0.3rem 0;
}

.nav-links a:hover, .nav-links a.active {
    color: var(--text-main);
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--primary), var(--accent));
    transition: var(--transition);
}

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

.nav-actions {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

/* Lang Switcher */
.lang-selector {
    display: flex;
    gap: 0.5rem;
    background: rgba(15, 23, 42, 0.04);
    padding: 0.3rem;
    border-radius: 20px;
    border: 1px solid var(--border-color);
}

.lang-btn {
    color: var(--text-muted);
    text-decoration: none;
    font-size: 0.8rem;
    font-weight: 600;
    padding: 0.2rem 0.6rem;
    border-radius: 15px;
    transition: var(--transition);
}

.lang-btn.active, .lang-btn:hover {
    color: var(--text-main);
    background: rgba(255, 255, 255, 0.9);
    box-shadow: 0 2px 6px rgba(15, 23, 42, 0.05);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.6rem;
    padding: 0.75rem 1.6rem;
    border-radius: 30px;
    font-weight: 600;
    font-size: 0.9rem;
    text-decoration: none;
    transition: var(--transition);
    cursor: pointer;
    border: none;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
    color: white;
    box-shadow: 0 4px 15px var(--primary-glow);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px var(--primary-glow);
}

.btn-secondary {
    background: white;
    color: var(--text-main);
    border: 1px solid var(--border-color);
    box-shadow: 0 2px 8px rgba(15, 23, 42, 0.04);
}

.btn-secondary:hover {
    background: #f1f5f9;
    border-color: rgba(15, 23, 42, 0.15);
    transform: translateY(-2px);
}

.btn-billing {
    background: linear-gradient(135deg, var(--secondary) 0%, #6366f1 100%);
    color: white;
    box-shadow: 0 4px 15px var(--secondary-glow);
}

.btn-billing:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px var(--secondary-glow);
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    gap: 4rem;
    padding: 8rem 2rem 4rem;
    max-width: 1200px;
    margin: 0 auto;
    position: relative;
}

.hero-content {
    flex: 0.9;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.badge {
    align-self: flex-start;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: rgba(2, 132, 199, 0.06);
    border: 1px solid rgba(2, 132, 199, 0.15);
    color: var(--primary);
    padding: 0.4rem 1.2rem;
    border-radius: 50px;
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.hero-title {
    font-family: var(--font-heading);
    font-size: 3.8rem;
    font-weight: 800;
    line-height: 1.15;
    letter-spacing: -1px;
}

.hero-title span {
    background: linear-gradient(135deg, var(--primary) 30%, #4f46e5 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-description {
    font-size: 1.15rem;
    color: var(--text-muted);
    max-width: 550px;
}

.hero-buttons {
    display: flex;
    gap: 1.2rem;
    margin-top: 1rem;
}

.hero-image {
    flex: 1.4; /* Give banner even more space */
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
}

.hero-image img {
    width: 100%;
    max-width: 100%;
    height: auto;
    border-radius: 20px;
    border: 1px solid var(--border-color);
    box-shadow: 0 20px 45px rgba(15, 23, 42, 0.08);
    animation: hoverPulse 6s ease-in-out infinite alternate;
}

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

/* Glassmorphism card system */
.glass-card {
    background: var(--bg-card);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--border-color);
    border-radius: 24px;
    padding: 2.5rem;
    box-shadow: 0 10px 30px rgba(15, 23, 42, 0.04);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.glass-card:hover {
    border-color: var(--border-glow);
    transform: translateY(-5px);
    box-shadow: 0 15px 35px rgba(2, 132, 199, 0.06);
}

/* Section Common */
.section {
    padding: 6rem 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.section-header {
    text-align: center;
    margin-bottom: 4rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.8rem;
}

.section-title {
    font-family: var(--font-heading);
    font-size: 2.8rem;
    font-weight: 700;
}

.section-title span {
    background: linear-gradient(135deg, var(--primary) 30%, var(--accent) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.section-description {
    color: var(--text-muted);
    max-width: 600px;
    font-size: 1.05rem;
}

/* Grid Layouts */
.grid-3 {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2.2rem;
}

.grid-2 {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(450px, 1fr));
    gap: 3rem;
}

/* Tariff Cards Styling */
.tariff-card {
    display: flex;
    flex-direction: column;
    gap: 1.8rem;
}

.tariff-card.featured {
    border: 2px solid var(--primary);
    box-shadow: 0 15px 40px rgba(2, 132, 199, 0.08);
}

.tariff-card.featured::before {
    content: 'Популярно';
    position: absolute;
    top: 15px;
    right: -30px;
    background: var(--primary);
    color: white;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    padding: 0.3rem 2.5rem;
    transform: rotate(45deg);
}

.tariff-header {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.tariff-name {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 700;
}

.tariff-speed {
    font-size: 2.5rem;
    font-family: var(--font-heading);
    font-weight: 800;
    color: var(--primary);
    line-height: 1;
}

.tariff-speed span {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-muted);
}

.tariff-price {
    font-size: 2.2rem;
    font-family: var(--font-heading);
    font-weight: 800;
    margin-top: 0.5rem;
}

.tariff-price span {
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--text-muted);
}

.tariff-features {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.8rem;
    margin-bottom: 1rem;
}

.tariff-features li {
    display: flex;
    align-items: center;
    gap: 0.7rem;
    font-size: 0.95rem;
    color: var(--text-muted);
}

.tariff-features li i {
    color: var(--primary);
    font-size: 1.1rem;
}

/* Custom styled payment accordions */
.accordion {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.accordion-item {
    border: 1px solid var(--border-color);
    border-radius: 16px;
    background: var(--bg-card);
    overflow: hidden;
    transition: var(--transition);
}

.accordion-header {
    padding: 1.4rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
    font-family: var(--font-heading);
    font-weight: 600;
    font-size: 1.1rem;
    transition: var(--transition);
}

.accordion-header:hover {
    background: rgba(15, 23, 42, 0.01);
    color: var(--primary);
}

.accordion-content {
    padding: 0 2rem;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease-out, padding 0.3s ease;
    color: var(--text-muted);
    font-size: 0.95rem;
    border-top: 1px solid transparent;
}

.accordion-item.active {
    border-color: var(--border-glow);
}

.accordion-item.active .accordion-header {
    color: var(--primary);
}

.accordion-item.active .accordion-content {
    padding: 1.4rem 2rem;
    max-height: 1000px;
    border-top: 1px solid var(--border-color);
}

/* Footer Section */
footer {
    background: #f1f5f9;
    border-top: 1px solid var(--border-color);
    padding: 4rem 2rem 2rem;
    margin-top: 6rem;
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 2fr repeat(3, 1fr);
    gap: 3rem;
}

.footer-brand {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.footer-description {
    color: var(--text-muted);
    font-size: 0.9rem;
    max-width: 320px;
}

.footer-links-col {
    display: flex;
    flex-direction: column;
    gap: 1.2rem;
}

.footer-links-col h4 {
    font-family: var(--font-heading);
    font-size: 1.1rem;
    font-weight: 600;
}

.footer-links-col ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.8rem;
}

.footer-links-col a {
    color: var(--text-muted);
    text-decoration: none;
    font-size: 0.9rem;
    transition: var(--transition);
}

.footer-links-col a:hover {
    color: var(--primary);
    transform: translateX(3px);
}

.footer-bottom {
    max-width: 1200px;
    margin: 3rem auto 0;
    padding-top: 2rem;
    border-top: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: var(--text-muted);
    font-size: 0.85rem;
}

/* Responsive Rules */
@media (max-width: 992px) {
    .hero {
        flex-direction: column-reverse;
        padding-top: 8rem;
        gap: 3rem;
        text-align: center;
    }
    
    .hero-content {
        align-items: center;
    }
    
    .hero-title {
        font-size: 3rem;
    }
    
    .footer-content {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .glass-nav {
        padding: 0.8rem 1.5rem;
    }
    
    .nav-links {
        display: none;
    }
    
    .section-title {
        font-size: 2.2rem;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .footer-bottom {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
    }
}