/* ========================================
   VOIDLESS VPN Landing Page - SEO Optimized
   Based on subscription-page design system
   ======================================== */

/* CSS Variables */
:root {
    /* Colors - Monochrome Dark Theme */
    --bg-primary: #0d0d0d;
    --bg-secondary: #141414;
    --bg-tertiary: #1b1b1b;
    --bg-hover: rgba(255, 255, 255, 0.04);
    --bg-active: rgba(255, 255, 255, 0.08);
    
    --text-primary: #ffffff;
    --text-secondary: #dcdcdc;
    --text-muted: #9a9a9a;
    --text-dimmed: #6e7681;
    
    --border-primary: rgba(255, 255, 255, 0.1);
    --border-hover: rgba(255, 255, 255, 0.15);
    --border-active: rgba(255, 255, 255, 0.2);
    
    --accent-primary: #ffffff;
    --accent-gradient: linear-gradient(135deg, #ffffff 0%, #888888 100%);
    --accent-gradient-subtle: linear-gradient(135deg, rgba(255,255,255,0.1) 0%, rgba(255,255,255,0.02) 100%);
    --accent-glow: rgba(255, 255, 255, 0.15);
    
    --check-color: #ffffff;
    
    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    
    /* Spacing */
    --container-max: 1200px;
    --section-padding: 100px;
    --card-radius: 14px;
    --button-radius: 10px;
    
    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-normal: 0.2s ease;
    --transition-slow: 0.3s ease;
}

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

html {
    scroll-behavior: smooth;
    scroll-padding-top: 92px; /* Высота header + отступ */
}

body {
    font-family: var(--font-family);
    background: 
        radial-gradient(ellipse 80% 50% at 50% 0%, rgba(255, 255, 255, 0.08) 0%, transparent 50%),
        radial-gradient(ellipse 60% 40% at 0% 100%, rgba(255, 255, 255, 0.05) 0%, transparent 50%),
        radial-gradient(ellipse 60% 40% at 100% 100%, rgba(255, 255, 255, 0.05) 0%, transparent 50%),
        linear-gradient(180deg, #0d0d0d 0%, #141414 50%, #0d0d0d 100%);
    background-attachment: fixed;
    color: var(--text-secondary);
    line-height: 1.6;
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

a {
    color: inherit;
    text-decoration: none;
}

ul, ol {
    list-style: none;
}

img {
    max-width: 100%;
    display: block;
}

/* Container */
.container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 24px;
}

/* ========================================
   Header
   ======================================== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(13, 13, 13, 0.85);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-primary);
}

.hero,
.features,
.pricing,
.cta,
.footer {
    position: relative;
    z-index: 1;
}

.header-container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 24px;
    height: 72px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 24px;
    font-weight: 800;
    color: var(--text-primary);
    letter-spacing: -0.02em;
}

.logo-icon {
    font-size: 20px;
    color: var(--text-muted);
}

.logo-img {
    width: 36px;
    height: 36px;
    object-fit: contain;
}


.logo:hover .ring-2 {
    animation-duration: 2.5s;
}

.logo:hover .ring-3 {
    animation-duration: 3s;
}

.nav {
    display: flex;
    align-items: center;
    gap: 8px;
}

.nav-link {
    padding: 10px 18px;
    font-size: 15px;
    font-weight: 500;
    color: var(--text-muted);
    border-radius: var(--button-radius);
    transition: all var(--transition-normal);
}

.nav-link:hover {
    color: var(--text-secondary);
    background: var(--bg-hover);
}

.nav-link.active {
    color: var(--text-primary);
    background: var(--bg-active);
}

/* Header Status Badge */
.header-status {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 8px 14px;
    background: var(--bg-secondary);
    border: 1px solid var(--border-primary);
    border-radius: var(--button-radius);
    font-size: 13px;
    font-weight: 500;
    color: var(--text-muted);
    margin-right: 12px;
    white-space: nowrap;
    height: 42px;
    box-sizing: border-box;
}

.status-dot {
    width: 6px;
    height: 6px;
    background: var(--text-primary);
    border-radius: 50%;
    flex-shrink: 0;
    animation: pulse 2s infinite;
}

.status-text {
    font-size: 13px;
    letter-spacing: 0.01em;
}

.cabinet-btn {
    display: flex;
    align-items: center;
    gap: 8px;
}


/* Mobile Menu Button */
.mobile-menu-btn {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 40px;
    height: 40px;
    padding: 10px;
    background: transparent;
    border: none;
    cursor: pointer;
}

.mobile-menu-btn span {
    width: 20px;
    height: 2px;
    background: var(--text-secondary);
    border-radius: 2px;
    transition: all var(--transition-normal);
}

.mobile-menu-btn.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.mobile-menu-btn.active span:nth-child(2) {
    opacity: 0;
}

.mobile-menu-btn.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

/* Mobile Navigation */
.mobile-nav {
    display: none;
    position: fixed;
    top: 72px;
    left: 0;
    right: 0;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-primary);
    padding: 20px 24px;
    flex-direction: column;
    gap: 8px;
    z-index: 999;
    transform: translateY(-100%);
    opacity: 0;
    transition: all var(--transition-normal);
}

.mobile-nav.active {
    transform: translateY(0);
    opacity: 1;
}

/* ========================================
   Buttons
   ======================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 24px;
    font-family: var(--font-family);
    font-size: 15px;
    font-weight: 600;
    border-radius: var(--button-radius);
    border: none;
    cursor: pointer;
    transition: all var(--transition-normal);
    white-space: nowrap;
}

.btn-primary {
    background: var(--accent-primary);
    color: #000000;
}

.btn-primary:hover {
    background: #f0f0f0;
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(255, 255, 255, 0.15);
}

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

.btn-outline:hover {
    background: var(--bg-hover);
    border-color: var(--border-hover);
    color: var(--text-primary);
}

.btn-large {
    padding: 16px 32px;
    font-size: 16px;
}

.btn-block {
    width: 100%;
}

/* ========================================
   Hero Section
   ======================================== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: 72px;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    inset: 0;
    background: 
        radial-gradient(ellipse 80% 50% at 50% -20%, rgba(255, 255, 255, 0.06), transparent),
        radial-gradient(ellipse 60% 40% at 80% 60%, rgba(255, 255, 255, 0.03), transparent);
    pointer-events: none;
}


.hero-content {
    position: relative;
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
    padding: 60px 0;
}


@keyframes pulse {
    0%, 100% { opacity: 1; transform: scale(1); }
    50% { opacity: 0.5; transform: scale(1.1); }
}

.hero-title {
    font-size: clamp(40px, 8vw, 72px);
    font-weight: 800;
    line-height: 1.1;
    color: var(--text-primary);
    margin-bottom: 24px;
    letter-spacing: -0.03em;
    animation: fadeInUp 0.6s ease 0.1s both;
}

.gradient-text {
    background: linear-gradient(135deg, #ffffff 0%, #666666 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-description {
    font-size: 18px;
    color: var(--text-muted);
    max-width: 560px;
    margin: 0 auto 40px;
    line-height: 1.7;
    animation: fadeInUp 0.6s ease 0.2s both;
}

.hero-buttons {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
    animation: fadeInUp 0.6s ease 0.3s both;
}

.hero-stats {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 40px;
    margin-top: 80px;
    animation: fadeInUp 0.6s ease 0.4s both;
}

.stat {
    text-align: center;
}

.stat-value {
    display: block;
    font-size: 36px;
    font-weight: 800;
    color: var(--text-primary);
    letter-spacing: -0.02em;
}

.stat-label {
    font-size: 14px;
    color: var(--text-muted);
    margin-top: 4px;
}

.stat-divider {
    width: 1px;
    height: 40px;
    background: var(--border-primary);
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ========================================
   Section Styling
   ======================================== */
section {
    padding: var(--section-padding) 0;
}

.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-label {
    display: inline-block;
    padding: 6px 14px;
    background: var(--bg-secondary);
    border: 1px solid var(--border-primary);
    border-radius: 100px;
    font-size: 13px;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 20px;
}

.section-title {
    font-size: clamp(32px, 5vw, 48px);
    font-weight: 800;
    color: var(--text-primary);
    letter-spacing: -0.02em;
    margin-bottom: 16px;
}

.section-description {
    font-size: 18px;
    color: var(--text-muted);
    max-width: 560px;
    margin: 0 auto;
}

/* ========================================
   Features Section
   ======================================== */
.features {
    background: var(--bg-primary);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.feature-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-primary);
    border-radius: var(--card-radius);
    padding: 32px;
    transition: all var(--transition-normal);
}

.feature-card:hover {
    border-color: var(--border-hover);
    transform: translateY(-4px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

.feature-icon {
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-hover);
    border-radius: 12px;
    margin-bottom: 20px;
    color: var(--text-secondary);
}

.feature-title {
    font-size: 20px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 12px;
}

.feature-description {
    font-size: 15px;
    color: var(--text-muted);
    line-height: 1.7;
}

/* ========================================
   Pricing Section
   ======================================== */
.pricing {
    background: linear-gradient(180deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
}

/* Single Pricing Card Layout */
.pricing-single {
    max-width: 900px;
    margin: 0 auto;
}

.pricing-card-single {
    background: var(--bg-secondary);
    border: 1px solid var(--border-primary);
    border-radius: 20px;
    overflow: hidden;
    transition: all var(--transition-normal);
}

.pricing-card-single:hover {
    border-color: var(--border-hover);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.4);
}

.pricing-card-content {
    display: grid;
    grid-template-columns: 1fr 1.5fr auto;
    gap: 40px;
    padding: 40px;
    align-items: center;
}

.pricing-left {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.pricing-badge {
    display: inline-flex;
    align-items: center;
    width: fit-content;
    padding: 6px 14px;
    background: var(--text-primary);
    color: var(--bg-primary);
    font-size: 12px;
    font-weight: 600;
    border-radius: 100px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.pricing-name-single {
    font-size: 28px;
    font-weight: 800;
    color: var(--text-primary);
    letter-spacing: -0.02em;
}

.pricing-tagline {
    font-size: 14px;
    color: var(--text-muted);
    line-height: 1.5;
}

.pricing-center {
    display: flex;
    justify-content: center;
}

.pricing-features-horizontal {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px 32px;
}

.pricing-features-horizontal li {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 15px;
    color: var(--text-secondary);
}

.pricing-features-horizontal svg {
    color: var(--check-color);
    flex-shrink: 0;
}

.pricing-right {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    gap: 20px;
}

.pricing-price-single {
    display: flex;
    align-items: baseline;
    gap: 4px;
}

.price-value-large {
    font-size: 56px;
    font-weight: 800;
    color: var(--text-primary);
    letter-spacing: -0.03em;
    line-height: 1;
}

.price-meta {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}

.price-currency-large {
    font-size: 24px;
    font-weight: 700;
    color: var(--text-secondary);
}

.price-period-single {
    font-size: 14px;
    color: var(--text-muted);
}

.pricing-extras {
    display: flex;
    justify-content: center;
    gap: 32px;
    padding: 20px 40px;
    background: var(--bg-tertiary);
    border-top: 1px solid var(--border-primary);
}

.extra-item {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    color: var(--text-muted);
}

.extra-item svg {
    color: var(--text-dimmed);
}

/* Legacy grid for multiple pricing cards (keep for future) */
.pricing-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    align-items: start;
}

.pricing-card {
    position: relative;
    background: var(--bg-secondary);
    border: 1px solid var(--border-primary);
    border-radius: var(--card-radius);
    padding: 32px;
    transition: all var(--transition-normal);
}

.pricing-card:hover {
    border-color: var(--border-hover);
}

.pricing-card.popular {
    border-color: rgba(255, 255, 255, 0.3);
    background: linear-gradient(180deg, var(--bg-secondary) 0%, rgba(255, 255, 255, 0.03) 100%);
    transform: scale(1.02);
}

.popular-badge {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    padding: 6px 16px;
    background: var(--text-primary);
    color: var(--bg-primary);
    font-size: 12px;
    font-weight: 600;
    border-radius: 100px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.pricing-header {
    text-align: center;
    margin-bottom: 32px;
}

.pricing-name {
    font-size: 20px;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 16px;
}

.pricing-price {
    display: flex;
    align-items: baseline;
    justify-content: center;
    gap: 4px;
}

.price-value {
    font-size: 48px;
    font-weight: 800;
    color: var(--text-primary);
    letter-spacing: -0.02em;
}

.price-currency {
    font-size: 24px;
    font-weight: 600;
    color: var(--text-secondary);
}

.price-period {
    font-size: 16px;
    color: var(--text-muted);
}

.pricing-features {
    margin-bottom: 32px;
}

.pricing-features li {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 0;
    font-size: 15px;
    color: var(--text-secondary);
    border-bottom: 1px solid var(--border-primary);
}

.pricing-features li:last-child {
    border-bottom: none;
}

.pricing-features svg {
    color: var(--check-color);
    flex-shrink: 0;
}

/* ========================================
   CTA Section
   ======================================== */
.cta {
    padding: 60px 0;
}

.cta-card {
    position: relative;
    background: var(--bg-secondary);
    border: 1px solid var(--border-primary);
    border-radius: 24px;
    padding: 80px 40px;
    text-align: center;
    overflow: hidden;
}

.cta-content {
    position: relative;
    z-index: 1;
}

.cta-title {
    font-size: clamp(28px, 4vw, 40px);
    font-weight: 800;
    color: var(--text-primary);
    margin-bottom: 16px;
    letter-spacing: -0.02em;
}

.cta-description {
    font-size: 18px;
    color: var(--text-muted);
    margin-bottom: 32px;
    max-width: 480px;
    margin-left: auto;
    margin-right: auto;
}

.cta-decoration {
    position: absolute;
    inset: 0;
    pointer-events: none;
}

.cta-circle {
    position: absolute;
    border-radius: 50%;
    border: 1px solid var(--border-primary);
    opacity: 0.5;
}

.cta-circle-1 {
    width: 400px;
    height: 400px;
    top: -200px;
    right: -100px;
}

.cta-circle-2 {
    width: 300px;
    height: 300px;
    bottom: -150px;
    left: -50px;
}

.cta-circle-3 {
    width: 200px;
    height: 200px;
    top: 50%;
    left: 20%;
    transform: translateY(-50%);
}

/* ========================================
   Footer
   ======================================== */
.footer {
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-primary);
    padding: 60px 0 30px;
}

.footer-content {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 60px;
    margin-bottom: 40px;
}

.footer-brand {
    max-width: 280px;
}

.footer-brand .logo {
    margin-bottom: 16px;
}

.footer-tagline {
    font-size: 14px;
    color: var(--text-muted);
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
}

.footer-column h4 {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 16px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.footer-column a {
    display: block;
    font-size: 14px;
    color: var(--text-muted);
    padding: 8px 0;
    transition: color var(--transition-fast);
}

.footer-column a:hover {
    color: var(--text-secondary);
}

.footer-bottom {
    padding-top: 30px;
    border-top: 1px solid var(--border-primary);
    text-align: center;
}

.footer-bottom p {
    font-size: 14px;
    color: var(--text-dimmed);
}

/* ========================================
   Responsive Design
   ======================================== */
@media (max-width: 1024px) {
    .features-grid,
    .pricing-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .pricing-card.popular {
        transform: none;
    }
    
    .pricing-card-content {
        grid-template-columns: 1fr;
        gap: 32px;
        text-align: center;
    }
    
    .pricing-left {
        align-items: center;
    }
    
    .pricing-features-horizontal {
        justify-content: center;
    }
    
    .pricing-right {
        align-items: center;
    }
    
    .pricing-extras {
        flex-wrap: wrap;
        gap: 20px;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .footer-brand {
        max-width: 100%;
    }
}

@media (max-width: 768px) {
    :root {
        --section-padding: 60px;
    }
    
    .nav {
        display: none;
    }
    
    .header-status {
        display: none;
    }
    
    .cabinet-btn {
        display: none;
    }
    
    .mobile-menu-btn {
        display: flex;
    }
    
    .mobile-nav {
        display: flex;
    }
    
    .hero-stats {
        flex-direction: column;
        gap: 24px;
    }
    
    .stat-divider {
        width: 60px;
        height: 1px;
    }
    
    .features-grid,
    .pricing-grid {
        grid-template-columns: 1fr;
    }
    
    .pricing-card-content {
        padding: 32px 24px;
    }
    
    .pricing-features-horizontal {
        grid-template-columns: 1fr;
        gap: 12px;
    }
    
    .pricing-extras {
        padding: 16px 24px;
        gap: 16px;
    }
    
    .price-value-large {
        font-size: 48px;
    }
    
    .footer-links {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 480px) {
    .hero-buttons {
        flex-direction: column;
        width: 100%;
    }
    
    .hero-buttons .btn {
        width: 100%;
    }
    
    .cta-card {
        padding: 40px 24px;
    }
    
    .pricing-extras {
        flex-direction: column;
        align-items: center;
        gap: 12px;
    }
    
    .footer-links {
        grid-template-columns: 1fr;
        gap: 24px;
    }
}

/* ========================================
   Animations & Effects
   ======================================== */

/* Scroll animations */
.feature-card,
.pricing-card,
.pricing-card-single {
    opacity: 0;
    transform: translateY(20px);
    animation: fadeInUp 0.6s ease forwards;
}

.pricing-card-single {
    animation-delay: 0.2s;
}

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

.pricing-card:nth-child(1) { animation-delay: 0.1s; }
.pricing-card:nth-child(2) { animation-delay: 0.2s; }
.pricing-card:nth-child(3) { animation-delay: 0.3s; }

/* Focus states for accessibility */
.btn:focus-visible,
.nav-link:focus-visible {
    outline: 2px solid var(--accent-primary);
    outline-offset: 2px;
}

/* Selection styling */
::selection {
    background: rgba(255, 255, 255, 0.2);
    color: var(--text-primary);
}

/* Scrollbar styling */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-primary);
}

::-webkit-scrollbar-thumb {
    background: var(--border-primary);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--border-hover);
}