/* ============================
   Stealtify — Global Styles
   New palette: #100D2A → #2F2A61 bg gradient
   Headings: #677DE9 → #BD75D5
   ============================ */

:root {
    --bg-primary: #100D2A;
    --bg-secondary: #160F35;
    --bg-card: rgba(255, 255, 255, 0.04);
    --bg-card-hover: rgba(255, 255, 255, 0.07);
    --border-color: rgba(255, 255, 255, 0.08);
    --border-hover: rgba(255, 255, 255, 0.15);

    --text-primary: #f0f0f5;
    --text-secondary: #9a95b8;
    --text-muted: #6b6589;

    --accent-primary: #677DE9;
    --accent-secondary: #BD75D5;
    --accent-glow: rgba(103, 125, 233, 0.35);

    --gradient-main: linear-gradient(135deg, #677DE9 0%, #BD75D5 100%);
    --gradient-subtle: linear-gradient(135deg, rgba(103, 125, 233, 0.12), rgba(189, 117, 213, 0.12));
    --gradient-bg: linear-gradient(170deg, #100D2A 0%, #1C1740 40%, #2F2A61 100%);

    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-xl: 24px;

    --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

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

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

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 40px;
}

/* ============================
   Navigation
   ============================ */

.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    padding: 16px 0;
    transition: var(--transition);
    background: transparent;
}

.navbar.scrolled {
    background: rgba(16, 13, 42, 0.88);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-color);
    padding: 12px 0;
}

.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 40px;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 700;
    font-size: 1.25rem;
    transition: var(--transition);
}

.nav-logo:hover {
    opacity: 0.8;
}

.logo-icon {
    width: 52px;
    height: 52px;
    object-fit: contain;
    /* Glow-эффект */
    box-shadow: 0 0 16px 2px rgba(117, 131, 202, 0.25);
    border-radius: 16px;
    /* Фон-подложка — светлая */
    background: linear-gradient(135deg, rgba(163, 115, 180, 0.22) 0%, rgba(146, 152, 190, 0.13) 100%);
    padding: 6px;
}

.logo-text {
    background: var(--gradient-main);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 32px;
}

.nav-links a {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-secondary);
    transition: var(--transition);
    position: relative;
}

.nav-links a:hover {
    color: var(--text-primary);
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-main);
    border-radius: 1px;
    transition: var(--transition);
}

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

/* Language Switcher */
.lang-switcher {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 12px;
    border-radius: 100px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    font-family: var(--font-family);
    font-size: 0.8rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    white-space: nowrap;
}

.lang-switcher:hover {
    background: var(--bg-card-hover);
    border-color: var(--border-hover);
    color: var(--text-primary);
}



.nav-right-mobile {
    display: none;
    align-items: center;
    gap: 12px;
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
}

.nav-toggle span {
    width: 24px;
    height: 2px;
    background: var(--text-primary);
    border-radius: 2px;
    transition: var(--transition);
}

/* ============================
   Buttons
   ============================ */

.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 24px;
    border-radius: var(--radius-md);
    font-family: var(--font-family);
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    border: none;
    white-space: nowrap;
}

.btn-primary {
    background: var(--gradient-main);
    color: #fff;
    box-shadow: 0 4px 24px var(--accent-glow);
}

.btn-primary:hover {
    box-shadow: 0 6px 36px var(--accent-glow);
    transform: translateY(-2px);
    filter: brightness(1.1);
}

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

.btn-secondary:hover {
    background: var(--bg-card-hover);
    border-color: var(--border-hover);
    transform: translateY(-2px);
}

.btn-large {
    padding: 16px 32px;
    font-size: 1.05rem;
    border-radius: var(--radius-lg);
}

/* ============================
   Hero Section
   ============================ */

.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 120px 0 80px;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    inset: 0;
    z-index: 0;
}

.hero-glow {
    position: absolute;
    border-radius: 50%;
    filter: blur(120px);
}

.hero-glow-1 {
    width: 1600px;
    height: 600px;
    background: #BD75D5;

    top: -200px;
    right: 100px;
        background: linear-gradient(135deg, rgba(189,117,213,0.32) 0%, rgba(103,125,233,0.22) 100%);
}

.hero-glow-2 {
    width: 1500px;
    height: 1700px;
        background: #677DE9;

    bottom: -200px;
    left: -100px;
    opacity: 0.1;
}



.hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 16px;
    border-radius: 100px;
    background: var(--gradient-subtle);
    border: 1px solid var(--border-color);
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: 32px;
    animation: fadeInUp 0.8s ease;
}

.badge-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: #79e2a8;
    animation: pulse 2s infinite;
}

.hero-title {
    font-size: clamp(2.5rem, 7vw, 4.5rem);
    font-weight: 800;
    line-height: 1.1;
    letter-spacing: -0.03em;
    margin-bottom: 24px;
    animation: fadeInUp 0.8s ease 0.1s both;
}

.gradient-text {
    background: var(--gradient-main);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: clamp(1rem, 2.5vw, 1.2rem);
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto 40px;
    line-height: 1.7;
    animation: fadeInUp 0.8s ease 0.2s both;
}

.hero-actions {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 16px;
    margin-bottom: 64px;
    flex-wrap: wrap;
    animation: fadeInUp 0.8s ease 0.3s both;
}

.hero-stats {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 40px;
    animation: fadeInUp 0.8s ease 0.4s both;
}

.stat {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
}

.stat-value {
    font-size: 2rem;
    font-weight: 800;
    background: var(--gradient-main);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-label {
    font-size: 0.8rem;
    color: var(--text-muted);
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

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

/* ============================
   Section Headers
   ============================ */

.section-header {
    text-align: center;
    margin-bottom: 64px;
}

.section-tag {
    display: inline-block;
    padding: 4px 14px;
    border-radius: 100px;
    background: var(--gradient-subtle);
    border: 1px solid var(--border-color);
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--accent-primary);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    margin-bottom: 20px;
}

.section-title {
    font-size: clamp(2rem, 5vw, 3rem);
    font-weight: 800;
    line-height: 1.15;
    letter-spacing: -0.02em;
    margin-bottom: 16px;
}

.section-subtitle {
    font-size: 1.1rem;
    color: var(--text-secondary);
    max-width: 550px;
    margin: 0 auto;
}

/* ============================
   Features Section
   ============================ */

.features {
    padding: 120px 0;
    position: relative;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

.feature-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 32px;
    transition: var(--transition);
}

.feature-card:hover {
    background: var(--bg-card-hover);
    border-color: var(--border-hover);
    transform: translateY(-4px);
}

.feature-card-large {
    grid-column: span 3;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    align-items: center;
    padding: 48px;
}

.feature-card-large .feature-icon {
    grid-column: 1;
}

.feature-card-large h3 {
    grid-column: 1;
}

.feature-card-large p {
    grid-column: 1;
}

.feature-card-large .feature-visual {
    grid-column: 2;
    grid-row: 1 / span 3;
}

.feature-icon {
    font-size: 2rem;
    margin-bottom: 16px;
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gradient-subtle);
    border-radius: var(--radius-md);
}

.feature-card h3 {
    font-size: 1.15rem;
    font-weight: 700;
    margin-bottom: 8px;
}

.feature-card p {
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* Route Demo */
.route-demo {
    background: rgba(16, 13, 42, 0.6);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 24px;
    display: flex;
    flex-direction: column;
    gap: 12px;
    font-family: 'SF Mono', 'Fira Code', 'Consolas', monospace;
    font-size: 0.85rem;
}

.route-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 16px;
    background: var(--bg-card);
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-color);
}

.route-app {
    font-weight: 600;
    color: var(--text-primary);
    min-width: 100px;
}

.route-arrow {
    color: var(--text-muted);
}

.route-proxy {
    color: var(--accent-primary);
    font-weight: 500;
}

.route-direct {
    color: #79e2a8;
}

/* ============================
   How It Works
   ============================ */

.how-it-works {
    padding: 120px 0;
    background: rgba(0, 0, 0, 0.15);
}

.steps {
    display: flex;
    flex-direction: column;
    gap: 48px;
    max-width: 700px;
    margin: 0 auto;
}

.step {
    display: flex;
    gap: 32px;
    align-items: flex-start;
}

.step-number {
    font-size: 3rem;
    font-weight: 800;
    background: var(--gradient-main);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1;
    min-width: 80px;
    opacity: 0.5;
}

.step-content h3 {
    font-size: 1.3rem;
    font-weight: 700;
    margin-bottom: 8px;
}

.step-content p {
    color: var(--text-secondary);
    font-size: 0.95rem;
    margin-bottom: 20px;
    line-height: 1.6;
}

.step-details {
    background: rgba(16, 13, 42, 0.6);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 16px 20px;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.detail-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 6px 0;
    border-bottom: 1px solid var(--border-color);
    font-size: 0.85rem;
}

.detail-row:last-child {
    border-bottom: none;
}

.detail-label {
    color: var(--text-muted);
    font-weight: 500;
}

.detail-value {
    color: var(--text-primary);
    font-weight: 600;
    font-family: 'SF Mono', 'Fira Code', 'Consolas', monospace;
    font-size: 0.8rem;
}

.detail-value.accent {
    color: var(--accent-primary);
}

/* Connect visual */
.connect-visual {
    display: flex;
    justify-content: flex-start;
}

.connect-btn-demo {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 16px 28px;
    background: rgba(121, 226, 168, 0.08);
    border: 1px solid rgba(121, 226, 168, 0.2);
    border-radius: var(--radius-lg);
    color: #79e2a8;
    font-weight: 600;
    font-size: 0.95rem;
}

.connect-circle {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: #79e2a8;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--bg-primary);
    animation: pulseGlow 2s infinite;
}

.connect-circle svg {
    stroke: var(--bg-primary);
}

/* ============================
   Protocols
   ============================ */

.protocols {
    padding: 120px 0;
}

.protocols-table-wrapper {
    max-width: 780px;
    margin: 0 auto;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.protocols-table {
    width: 100%;
    border-collapse: collapse;
}

.protocols-table th {
    padding: 16px 24px;
    text-align: left;
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.06em;
    border-bottom: 1px solid var(--border-color);
    background: rgba(255, 255, 255, 0.02);
}

.protocols-table td {
    padding: 14px 24px;
    border-bottom: 1px solid var(--border-color);
    font-size: 0.9rem;
}

.protocols-table tr:last-child td {
    border-bottom: none;
}

.protocols-table tr:hover td {
    background: rgba(255, 255, 255, 0.02);
}

.protocol-name {
    font-weight: 600;
    color: var(--text-primary);
}

.check {
    font-size: 1rem;
}

.cross {
    color: var(--text-muted);
}

.auth-type {
    color: var(--text-secondary);
    font-family: 'SF Mono', 'Fira Code', 'Consolas', monospace;
    font-size: 0.8rem;
    padding: 2px 8px;
    background: rgba(103, 125, 233, 0.1);
    border-radius: 4px;
}

/* Engine badges */
.engine-badge {
    display: inline-block;
    padding: 2px 10px;
    border-radius: 100px;
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.03em;
}

.engine-badge.kotlin {
    background: rgba(103, 125, 233, 0.15);
    color: #8a9df0;
    border: 1px solid rgba(103, 125, 233, 0.25);
}

.engine-badge.go {
    background: rgba(189, 117, 213, 0.15);
    color: #cd95e0;
    border: 1px solid rgba(189, 117, 213, 0.25);
}

/* ============================
   Architecture
   ============================ */

.architecture {
    padding: 120px 0;
    background: rgba(0, 0, 0, 0.15);
}

.arch-dual {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
    max-width: 800px;
    margin: 0 auto;
}

.arch-col {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.arch-col-header {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 0;
    font-weight: 600;
    font-size: 0.95rem;
}

.arch-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 20px 24px;
    transition: var(--transition);
}

.arch-card:hover {
    border-color: var(--border-hover);
    background: var(--bg-card-hover);
}

.arch-card h4 {
    font-size: 0.95rem;
    font-weight: 700;
    margin-bottom: 4px;
    font-family: 'SF Mono', 'Fira Code', 'Consolas', monospace;
}

.arch-card p {
    font-size: 0.8rem;
    color: var(--text-muted);
}

/* ============================
   Download Section
   ============================ */

.download {
    padding: 120px 0;
}

.download-card {
    position: relative;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    padding: 80px 48px;
    text-align: center;
    overflow: hidden;
}

.download-glow {
    position: absolute;
    top: -100px;
    left: 50%;
    transform: translateX(-50%);
    width: 500px;
    height: 400px;
    background: linear-gradient(135deg, #677DE9, #BD75D5);
    border-radius: 50%;
    filter: blur(150px);
    opacity: 0.1;
    pointer-events: none;
}

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

.download-content h2 {
    font-size: clamp(1.8rem, 4vw, 2.5rem);
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 16px;
    letter-spacing: -0.02em;
}

.download-content > p {
    color: var(--text-secondary);
    font-size: 1.05rem;
    max-width: 550px;
    margin: 0 auto 32px;
    line-height: 1.6;
}

.download-requirements {
    display: flex;
    justify-content: center;
    gap: 32px;
    margin-bottom: 40px;
    flex-wrap: wrap;
}

.req {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.req svg {
    color: #79e2a8;
    flex-shrink: 0;
}

.download-actions {
    display: flex;
    justify-content: center;
    gap: 16px;
    flex-wrap: wrap;
}

/* ============================
   Footer
   ============================ */

.footer {
    padding: 48px 0 32px;
    border-top: 1px solid var(--border-color);
}

.footer-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 32px;
}

.footer-brand {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 700;
    font-size: 1.1rem;
}

.footer-links {
    display: flex;
    gap: 24px;
}

.footer-links a {
    font-size: 0.9rem;
    color: var(--text-muted);
    transition: var(--transition);
}

.footer-links a:hover {
    color: var(--text-primary);
}

.footer-bottom {
    text-align: center;
    padding-top: 24px;
    border-top: 1px solid var(--border-color);
}

.footer-bottom p {
    font-size: 0.85rem;
    color: var(--text-muted);
}

/* ============================
   Animations
   ============================ */

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

@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.4;
    }
}

@keyframes pulseGlow {
    0%, 100% {
        box-shadow: 0 0 20px rgba(121, 226, 168, 0.3);
    }
    50% {
        box-shadow: 0 0 40px rgba(121, 226, 168, 0.5);
    }
}

/* Scroll animations */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ============================
   Responsive
   ============================ */

@media (max-width: 1024px) {
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .feature-card-large {
        grid-column: span 2;
    }
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background: rgba(16, 13, 42, 0.98);
        backdrop-filter: blur(20px);
        flex-direction: column;
        align-items: center;
        justify-content: center;
        gap: 40px;
        z-index: 99;
    }

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

    .nav-links a {
        font-size: 1.5rem;
        font-weight: 600;
    }

    /* Hide desktop lang switcher inside nav-links on mobile */
    .nav-links .lang-switcher {
        display: none;
    }

    .nav-right-mobile {
        display: flex;
    }

    .nav-toggle {
        display: flex;
        z-index: 101;
    }

    .nav-toggle.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }
    .nav-toggle.active span:nth-child(2) {
        opacity: 0;
    }
    .nav-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(5px, -5px);
    }

    .hero {
        padding: 100px 0 60px;
        min-height: auto;
    }

    .hero-stats {
        gap: 24px;
    }

    .stat-value {
        font-size: 1.5rem;
    }

    .features-grid {
        grid-template-columns: 1fr;
    }

    .feature-card-large {
        grid-column: span 1;
        grid-template-columns: 1fr;
        padding: 32px;
    }

    .feature-card-large .feature-visual {
        grid-column: 1;
        grid-row: auto;
    }

    .step {
        flex-direction: column;
        gap: 16px;
    }

    .step-number {
        font-size: 2rem;
        min-width: auto;
    }

    .arch-dual {
        grid-template-columns: 1fr;
    }

    .download-card {
        padding: 48px 24px;
    }

    .download-requirements {
        flex-direction: column;
        align-items: center;
        gap: 12px;
    }

    .download-actions {
        flex-direction: column;
        align-items: center;
    }

    .footer-content {
        flex-direction: column;
        gap: 24px;
        text-align: center;
    }

    .hero-actions {
        flex-direction: column;
        align-items: center;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 16px;
    }

    .hero-title {
        font-size: 2rem;
    }

    .hero-stats {
        flex-direction: column;
        gap: 16px;
    }

    .stat-divider {
        width: 40px;
        height: 1px;
    }

    .protocols-table th,
    .protocols-table td {
        padding: 12px 12px;
        font-size: 0.78rem;
    }
}