/* 
   =========================================
   CSS для "Дед VPN" (Premium Dark Theme)
   =========================================
*/

:root {
    --bg-main: #0a0a0f;
    --bg-darker: #050508;
    --accent-primary: #00f0ff; /* Neon cyan */
    --accent-secondary: #7000ff; /* Neon purple */
    --accent-gradient: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    --text-primary: #ffffff;
    --text-secondary: #a0a0b0;
    --glass-bg: rgba(20, 20, 30, 0.4);
    --glass-border: rgba(255, 255, 255, 0.08);
    --glass-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.37);
    --font-main: 'Outfit', sans-serif;
    --transition-fast: 0.2s ease-in-out;
    --transition-normal: 0.3s ease-in-out;
}

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

html {
    scroll-behavior: smooth;
}

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

a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition-fast);
}

ul {
    list-style: none;
}

/* Эффекты свечения на фоне */
.bg-glow {
    position: fixed;
    border-radius: 50%;
    filter: blur(120px);
    z-index: -1;
    pointer-events: none;
    opacity: 0.5;
}

.bg-glow-1 {
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(0, 240, 255, 0.15) 0%, rgba(0,0,0,0) 70%);
    top: -100px;
    left: -100px;
}

.bg-glow-2 {
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(112, 0, 255, 0.15) 0%, rgba(0,0,0,0) 70%);
    bottom: -200px;
    right: -100px;
}

/* Контейнеры и сбросы */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.section {
    padding: 100px 0;
}

.text-center { text-align: center; }
.mb-2 { margin-bottom: 0.5rem; }
.mb-3 { margin-bottom: 1rem; }
.mb-4 { margin-bottom: 1.5rem; }
.mb-5 { margin-bottom: 3rem; }
.mt-3 { margin-top: 1rem; }
.mt-5 { margin-top: 3rem; }
.bg-darker { background-color: var(--bg-darker); }

/* Типографика */
.h1-title {
    font-size: 3.5rem;
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 1.5rem;
}

.h2-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.text-gradient {
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    display: inline-block;
}

.glow-text {
    text-shadow: 0 0 10px rgba(0, 240, 255, 0.6);
}

.section-desc {
    color: var(--text-secondary);
    font-size: 1.1rem;
    max-width: 800px;
    margin: 0 auto 1.5rem auto;
}

.highlight-desc {
    font-weight: 500;
    color: #fff;
    font-size: 1.2rem;
}

/* Glassmorphism утилиты */
.glassmorphism {
    background: var(--glass-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--glass-border);
    box-shadow: var(--glass-shadow);
    border-radius: 20px;
}

.pulse-border {
    animation: pulseBorder 3s infinite alternate;
}

@keyframes pulseBorder {
    0% { border-color: rgba(0, 240, 255, 0.1); box-shadow: 0 0 20px rgba(0, 240, 255, 0.05); }
    100% { border-color: rgba(0, 240, 255, 0.4); box-shadow: 0 0 40px rgba(0, 240, 255, 0.2); }
}

/* Кнопки */
.btn {
    display: inline-block;
    padding: 12px 28px;
    border-radius: 12px;
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    text-align: center;
    border: none;
    transition: var(--transition-normal);
}

.btn-primary {
    background: var(--accent-gradient);
    color: #fff;
    box-shadow: 0 4px 15px rgba(0, 240, 255, 0.3);
}

.btn-primary:hover {
    box-shadow: 0 6px 25px rgba(0, 240, 255, 0.6);
    transform: translateY(-2px);
}

.btn-outline {
    background: transparent;
    border: 1px solid var(--accent-primary);
    color: var(--accent-primary);
}

.btn-outline:hover {
    background: rgba(0, 240, 255, 0.1);
    box-shadow: 0 0 15px rgba(0, 240, 255, 0.2);
}

.btn-lg {
    padding: 16px 36px;
    font-size: 1.1rem;
}

.btn-sm {
    padding: 8px 16px;
    font-size: 0.9rem;
}

.btn-block {
    display: block;
    width: 100%;
}

/* Анимации кнопок */
.pulse-anim {
    animation: pulseButton 2s infinite;
}

@keyframes pulseButton {
    0% { transform: scale(1); box-shadow: 0 0 0 0 rgba(0, 240, 255, 0.5); }
    70% { transform: scale(1.02); box-shadow: 0 0 0 15px rgba(0, 240, 255, 0); }
    100% { transform: scale(1); box-shadow: 0 0 0 0 rgba(0, 240, 255, 0); }
}

/* Ховер эффекты */
.hover-up {
    transition: var(--transition-normal);
}
.hover-up:hover {
    transform: translateY(-10px);
    border-color: rgba(0, 240, 255, 0.3);
}

/* Шапка (Header) */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    border-radius: 0;
    border-left: none;
    border-right: none;
    border-top: none;
    padding: 15px 0;
}

.header-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
}

.logo-icon {
    font-size: 1.8rem;
    filter: drop-shadow(0 0 5px var(--accent-primary));
}

.logo-text {
    display: flex;
    flex-direction: column;
}

.logo-title {
    font-size: 1.3rem;
    font-weight: 800;
    color: #fff;
    line-height: 1;
}

.logo-subtitle {
    font-size: 0.7rem;
    color: var(--accent-primary);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.nav-list {
    display: flex;
    gap: 30px;
}

.nav-link {
    font-weight: 500;
    font-size: 0.95rem;
    color: var(--text-secondary);
}

.nav-link:hover {
    color: var(--accent-primary);
}

.burger-menu {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
}

.burger-menu span {
    width: 25px;
    height: 3px;
    background: #fff;
    transition: 0.3s;
}

/* Hero Секция */
.hero {
    padding-top: 150px;
    min-height: 100vh;
    display: flex;
    align-items: center;
}

.hero-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 50px;
    align-items: center;
}

.badge {
    display: inline-block;
    padding: 6px 14px;
    border-radius: 20px;
    background: rgba(0, 240, 255, 0.1);
    border: 1px solid rgba(0, 240, 255, 0.3);
    color: var(--accent-primary);
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 20px;
}

.hero-subtitle {
    font-size: 1.25rem;
    font-weight: 500;
    margin-bottom: 1rem;
    color: #fff;
}

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

.hero-cta {
    display: flex;
    flex-direction: column;
    gap: 10px;
    align-items: flex-start;
}

.cta-note {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.shield-mockup {
    padding: 60px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(112,0,255,0.2) 0%, rgba(0,0,0,0) 70%);
    display: flex;
    justify-content: center;
    align-items: center;
}

.shield-inner {
    background: var(--glass-bg);
    border: 1px solid rgba(0, 240, 255, 0.4);
    box-shadow: 0 0 50px rgba(0, 240, 255, 0.2);
    border-radius: 20px;
    padding: 40px;
    text-align: center;
    position: relative;
    backdrop-filter: blur(10px);
    animation: float 6s ease-in-out infinite;
}

@keyframes float {
    0% { transform: translateY(0px); }
    50% { transform: translateY(-20px); }
    100% { transform: translateY(0px); }
}

.status-dot {
    display: inline-block;
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background: #00ff88;
    box-shadow: 0 0 20px #00ff88;
    margin-bottom: 15px;
    position: relative;
}

.status-dot::after {
    content: '';
    position: absolute;
    top: -10px; left: -10px; right: -10px; bottom: -10px;
    border-radius: 50%;
    border: 2px solid #00ff88;
    animation: ripple 2s infinite;
}

@keyframes ripple {
    0% { transform: scale(0.8); opacity: 1; }
    100% { transform: scale(1.5); opacity: 0; }
}

/* О сервисе (Как это работает) */
#about .section-header {
    border: 2px dashed rgba(0, 240, 255, 0.4);
    padding: 50px 30px;
    border-radius: 20px;
    background: rgba(0, 240, 255, 0.02);
    margin: 0 auto;
}

/* Features ГРИД */
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.feature-card {
    padding: 30px;
}

.feature-icon {
    font-size: 2.5rem;
    margin-bottom: 20px;
    display: inline-block;
    background: rgba(255,255,255,0.05);
    width: 60px;
    height: 60px;
    line-height: 60px;
    text-align: center;
    border-radius: 15px;
}

.feature-card h3 {
    margin-bottom: 10px;
    font-size: 1.3rem;
}

.feature-card p {
    color: var(--text-secondary);
}

/* Кому пригодится (Audience) */
.audience-wrapper {
    padding: 50px;
    max-width: 900px;
    margin: 0 auto;
}

.audience-list li {
    margin-bottom: 20px;
    padding-left: 20px;
    position: relative;
    border-left: 2px solid var(--accent-secondary);
}

.audience-list li:last-child {
    margin-bottom: 0;
}

/* 3 Шага (How-to) */
.steps-grid {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 40px;
}

.step-card {
    flex: 1;
    position: relative;
    z-index: 2;
}

.step-number {
    font-size: 4rem;
    font-weight: 800;
    color: transparent;
    -webkit-text-stroke: 1px var(--accent-primary);
    margin-bottom: 15px;
    line-height: 1;
}

.step-line {
    flex: 0 0 100px;
    height: 2px;
    background: linear-gradient(90deg, var(--accent-primary), var(--accent-secondary));
    opacity: 0.5;
    margin: 0 20px;
    transform: translateY(-20px);
}

/* Промо CTA */
.promo-box {
    padding: 60px 40px;
    max-width: 800px;
    margin: 0 auto;
}

.promo-subtitle {
    font-size: 1.5rem;
    color: #fff;
    margin-bottom: 15px;
    font-weight: 600;
}

/* Тарифы */
.pricing-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    align-items: flex-end;
    margin-top: 50px;
}

.price-card {
    padding: 40px 30px;
    display: flex;
    flex-direction: column;
    height: 100%;
    position: relative;
}

.price-card.popular {
    border-color: var(--accent-primary);
    box-shadow: 0 0 30px rgba(0, 240, 255, 0.15);
    transform: scale(1.05);
    z-index: 2;
}

.popular-badge {
    position: absolute;
    top: -15px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--accent-gradient);
    color: #fff;
    padding: 5px 15px;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: bold;
}

.price-header h3 {
    font-size: 1.5rem;
}

.price-header p {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.price-amount {
    font-size: 3rem;
    font-weight: 800;
    margin: 20px 0;
    color: #fff;
}

.price-amount .currency { font-size: 1.5rem; vertical-align: top; margin-right: 5px; }
.price-amount .period { font-size: 1rem; color: var(--text-secondary); font-weight: normal; }

.price-total {
    font-size: 0.9rem;
    color: var(--accent-primary);
    margin-bottom: 20px;
    min-height: 44px;
}

.price-features {
    margin-bottom: 30px;
    flex-grow: 1;
}

.price-features ul li {
    margin-bottom: 12px;
    display: flex;
    align-items: center;
    gap: 10px;
}

/* Платформы */
.platforms-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}

.platform-card {
    padding: 30px 20px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

.platform-icon {
    font-size: 3rem;
    margin-bottom: 15px;
}

.link-text {
    margin-top: 15px;
    color: var(--accent-primary);
    font-size: 0.9rem;
}

/* Отзывы */
.reviews-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.review-card {
    padding: 30px;
}

.review-stars {
    margin-bottom: 15px;
}

.review-text {
    font-style: italic;
    color: #e0e0e0;
    margin-bottom: 20px;
}

.review-author {
    font-weight: bold;
    color: var(--accent-primary);
}

/* Гарантии */
.guarantee-box {
    padding: 50px 30px;
    margin: 0 auto;
    max-width: 900px;
}

/* FAQ / Аккордеон */
.accordion {
    max-width: 800px;
    margin: 0 auto;
}

.accordion-item {
    overflow: hidden;
}

.accordion-header {
    padding: 20px 25px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
    font-weight: bold;
}

.accordion-content {
    padding: 0 25px;
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-normal);
    color: var(--text-secondary);
}

.accordion-item.active .accordion-content {
    padding: 0 25px 25px 25px;
    max-height: 300px;
}

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

/* Подвал */
.footer {
    padding: 60px 0 20px 0;
    border-top: 1px solid var(--glass-border);
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 40px;
    margin-bottom: 40px;
}

.footer-links h4 {
    margin-bottom: 20px;
    font-size: 1.1rem;
}

.footer-links ul li {
    margin-bottom: 10px;
}

.footer-links ul li a {
    color: var(--text-secondary);
}

.footer-links ul li a:hover {
    color: var(--accent-primary);
}

.footer-bottom {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid rgba(255,255,255,0.05);
    color: var(--text-secondary);
    font-size: 0.9rem;
}

/* Адаптивность (Mobile) */
@media (max-width: 992px) {
    .h1-title { font-size: 2.8rem; }
    .hero-container { grid-template-columns: 1fr; text-align: center; }
    .hero-cta { align-items: center; margin: 0 auto; }
    .shield-mockup { padding: 40px; }
    .pricing-grid { grid-template-columns: 1fr; }
    .price-card.popular { transform: none; }
    .platforms-grid { grid-template-columns: repeat(2, 1fr); }
    .reviews-grid { grid-template-columns: 1fr; }
    .footer-content { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
    .h1-title { font-size: 2.2rem; }
    .h2-title { font-size: 2rem; }
    
    .burger-menu { display: flex; }
    .nav {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        background: var(--bg-darker);
        padding: 20px;
        border-bottom: 1px solid var(--glass-border);
    }
    
    .nav.active { display: block; }
    .nav-list { flex-direction: column; align-items: center; }
    
    .steps-grid { flex-direction: column; gap: 30px; }
    .step-line { display: none; }
    
    .platforms-grid { grid-template-columns: 1fr; }
    .audience-wrapper { padding: 30px 20px; }
}