/* ========================================
   EXO - Космическая навигация
   Единый файл стилей
   ======================================== */

/* CSS Variables */
:root {
    /* Цветовая палитра */
    --bg-primary: #0A1628;
    --bg-secondary: #111D2E;
    --bg-tertiary: #162236;
    --accent-green: #00D9A5;
    --accent-blue: #3B82F6;
    --accent-gold: #F59E0B;
    --text-primary: #FFFFFF;
    --text-secondary: #94A3B8;
    --text-muted: #64748B;

    /* Градиенты */
    --gradient-primary: linear-gradient(135deg, var(--accent-green), var(--accent-blue));
    --gradient-gold: linear-gradient(135deg, var(--accent-gold), #FBBF24);
    --gradient-dark: linear-gradient(180deg, var(--bg-primary), var(--bg-secondary));

    /* Тени и свечения */
    --glow-green: 0 0 20px rgba(0, 217, 165, 0.5);
    --glow-blue: 0 0 20px rgba(59, 130, 246, 0.5);
    --glow-gold: 0 0 20px rgba(245, 158, 11, 0.5);
    --shadow-card: 0 4px 20px rgba(0, 0, 0, 0.3);

    /* Типографика */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-display: 'Space Grotesk', var(--font-primary);

    /* Размеры */
    --header-height: 80px;
    --container-width: 1200px;
    --border-radius: 12px;
    --border-radius-lg: 20px;

    /* Переходы */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-primary);
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    min-height: 100vh;
}

/* Топографический фон */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background:
        url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 1000 1000'%3E%3Cpath d='M0 500 Q250 400 500 500 T1000 500' fill='none' stroke='%2300D9A5' stroke-width='0.5' opacity='0.1'/%3E%3Cpath d='M0 550 Q250 450 500 550 T1000 550' fill='none' stroke='%2300D9A5' stroke-width='0.5' opacity='0.08'/%3E%3Cpath d='M0 600 Q250 500 500 600 T1000 600' fill='none' stroke='%2300D9A5' stroke-width='0.5' opacity='0.06'/%3E%3C/svg%3E") repeat;
    pointer-events: none;
    z-index: -1;
    animation: topoMove 30s linear infinite;
}

@keyframes topoMove {
    0% { background-position: 0 0; }
    100% { background-position: 1000px 0; }
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-display);
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 1rem;
}

h1 { font-size: clamp(2.5rem, 5vw, 4rem); }
h2 { font-size: clamp(2rem, 4vw, 3rem); }
h3 { font-size: clamp(1.5rem, 3vw, 2rem); }
h4 { font-size: clamp(1.25rem, 2vw, 1.5rem); }

p {
    margin-bottom: 1rem;
    color: var(--text-secondary);
}

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

a:hover {
    color: var(--accent-blue);
}

img {
    max-width: 100%;
    height: auto;
}

/* Container */
.container {
    width: 100%;
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 1.5rem;
}

/* ========================================
   HEADER / NAVIGATION
   ======================================== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: var(--header-height);
    background: rgba(10, 22, 40, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(0, 217, 165, 0.1);
    z-index: 1000;
    transition: var(--transition-normal);
}

.header.scrolled {
    background: rgba(10, 22, 40, 0.98);
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
}

.header .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
}

/* Logo */
.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-family: var(--font-display);
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--text-primary);
    text-decoration: none;
}

.logo-icon {
    width: 40px;
    height: 40px;
    background: var(--gradient-primary);
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    animation: logoPulse 3s ease-in-out infinite;
}

@keyframes logoPulse {
    0%, 100% { box-shadow: 0 0 0 0 rgba(0, 217, 165, 0.4); }
    50% { box-shadow: 0 0 20px 5px rgba(0, 217, 165, 0.2); }
}

.logo-icon svg {
    width: 24px;
    height: 24px;
    fill: white;
}

/* Navigation */
.nav {
    display: flex;
    align-items: center;
    gap: 2rem;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 0.5rem;
}

.nav-link {
    display: block;
    padding: 0.5rem 1rem;
    color: var(--text-secondary);
    font-weight: 500;
    border-radius: var(--border-radius);
    transition: var(--transition-fast);
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 2px;
    background: var(--accent-green);
    transition: var(--transition-fast);
}

.nav-link:hover,
.nav-link.active {
    color: var(--text-primary);
}

.nav-link:hover::after,
.nav-link.active::after {
    width: 60%;
}

/* Mobile menu button */
.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: 10px;
    background: none;
    border: none;
    cursor: pointer;
}

.nav-toggle span {
    display: block;
    width: 25px;
    height: 2px;
    background: var(--text-primary);
    transition: var(--transition-fast);
}

.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);
}

/* ========================================
   BUTTONS
   ======================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.875rem 1.75rem;
    font-family: var(--font-primary);
    font-size: 1rem;
    font-weight: 600;
    border: none;
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: var(--transition-normal);
    text-decoration: none;
}

.btn-primary {
    background: var(--gradient-primary);
    color: var(--bg-primary);
    box-shadow: var(--glow-green);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 0 30px rgba(0, 217, 165, 0.6);
    color: var(--bg-primary);
}

.btn-secondary {
    background: transparent;
    color: var(--text-primary);
    border: 2px solid var(--accent-green);
}

.btn-secondary:hover {
    background: var(--accent-green);
    color: var(--bg-primary);
}

.btn-gold {
    background: var(--gradient-gold);
    color: var(--bg-primary);
    box-shadow: var(--glow-gold);
}

.btn-gold:hover {
    transform: translateY(-2px);
    box-shadow: 0 0 30px rgba(245, 158, 11, 0.6);
    color: var(--bg-primary);
}

.btn-large {
    padding: 1.125rem 2.5rem;
    font-size: 1.125rem;
}

.btn-icon {
    width: 20px;
    height: 20px;
}

/* ========================================
   HERO SECTION
   ======================================== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: var(--header-height);
    overflow: hidden;
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 600px;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    background: rgba(0, 217, 165, 0.1);
    border: 1px solid rgba(0, 217, 165, 0.3);
    border-radius: 50px;
    font-size: 0.875rem;
    color: var(--accent-green);
    margin-bottom: 1.5rem;
}

.hero-title {
    font-size: clamp(3rem, 6vw, 5rem);
    margin-bottom: 1.5rem;
    background: linear-gradient(135deg, var(--text-primary), var(--accent-green));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: 2rem;
    max-width: 500px;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.hero-stats {
    display: flex;
    gap: 3rem;
    margin-top: 3rem;
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.stat-item {
    text-align: left;
}

.stat-value {
    font-family: var(--font-display);
    font-size: 2rem;
    font-weight: 700;
    color: var(--accent-green);
}

.stat-label {
    font-size: 0.875rem;
    color: var(--text-muted);
}

/* Globe container */
.hero-globe {
    position: absolute;
    right: -10%;
    top: 50%;
    transform: translateY(-50%);
    width: 60%;
    height: 80%;
    z-index: 1;
}

#globe-container {
    width: 100%;
    height: 100%;
}

/* ========================================
   SECTIONS
   ======================================== */
.section {
    padding: 6rem 0;
    position: relative;
}

.section-header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto 4rem;
}

.section-badge {
    display: inline-block;
    padding: 0.375rem 1rem;
    background: rgba(59, 130, 246, 0.1);
    border: 1px solid rgba(59, 130, 246, 0.3);
    border-radius: 50px;
    font-size: 0.875rem;
    color: var(--accent-blue);
    margin-bottom: 1rem;
}

.section-title {
    margin-bottom: 1rem;
}

.section-description {
    font-size: 1.125rem;
    color: var(--text-secondary);
}

/* ========================================
   CARDS
   ======================================== */
.card {
    background: var(--bg-secondary);
    border: 1px solid rgba(255, 255, 255, 0.05);
    border-radius: var(--border-radius-lg);
    padding: 2rem;
    transition: var(--transition-normal);
}

.card:hover {
    transform: translateY(-5px);
    border-color: rgba(0, 217, 165, 0.3);
    box-shadow: var(--shadow-card);
}

.card-icon {
    width: 60px;
    height: 60px;
    background: var(--gradient-primary);
    border-radius: var(--border-radius);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
}

.card-icon svg {
    width: 30px;
    height: 30px;
    fill: white;
}

.card-title {
    font-size: 1.25rem;
    margin-bottom: 0.75rem;
}

.card-text {
    color: var(--text-secondary);
    font-size: 0.9375rem;
}

/* Card grid */
.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

/* ========================================
   FEATURES SECTION (index)
   ======================================== */
.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

.feature-card {
    text-align: center;
    padding: 2.5rem 2rem;
}

.feature-card .card-icon {
    margin: 0 auto 1.5rem;
}

/* ========================================
   CTA SECTION
   ======================================== */
.cta-section {
    background: var(--bg-secondary);
    border-top: 1px solid rgba(0, 217, 165, 0.1);
    border-bottom: 1px solid rgba(0, 217, 165, 0.1);
}

.cta-content {
    text-align: center;
    max-width: 600px;
    margin: 0 auto;
}

.cta-title {
    margin-bottom: 1rem;
}

.cta-text {
    font-size: 1.125rem;
    margin-bottom: 2rem;
}

/* ========================================
   FOOTER
   ======================================== */
.footer {
    background: var(--bg-secondary);
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    padding: 4rem 0 2rem;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr repeat(3, 1fr);
    gap: 3rem;
    margin-bottom: 3rem;
}

.footer-brand {
    max-width: 300px;
}

.footer-brand .logo {
    margin-bottom: 1rem;
}

.footer-brand p {
    font-size: 0.9375rem;
    color: var(--text-muted);
}

.footer-title {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
    color: var(--text-primary);
}

.footer-links {
    list-style: none;
}

.footer-links li {
    margin-bottom: 0.75rem;
}

.footer-links a {
    color: var(--text-muted);
    font-size: 0.9375rem;
    transition: var(--transition-fast);
}

.footer-links a:hover {
    color: var(--accent-green);
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.footer-copyright {
    color: var(--text-muted);
    font-size: 0.875rem;
}

.footer-socials {
    display: flex;
    gap: 1rem;
}

.social-link {
    width: 40px;
    height: 40px;
    background: var(--bg-tertiary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    transition: var(--transition-fast);
}

.social-link:hover {
    background: var(--accent-green);
    color: var(--bg-primary);
}

.social-link svg {
    width: 18px;
    height: 18px;
    fill: currentColor;
}

/* ========================================
   PAGE HERO (internal pages)
   ======================================== */
.page-hero {
    padding: calc(var(--header-height) + 4rem) 0 4rem;
    text-align: center;
    background: linear-gradient(180deg, var(--bg-secondary), var(--bg-primary));
}

.page-hero .section-badge {
    margin-bottom: 1rem;
}

.page-title {
    font-size: clamp(2.5rem, 5vw, 3.5rem);
    margin-bottom: 1rem;
}

.page-description {
    font-size: 1.25rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

/* ========================================
   STEPS / HOW IT WORKS
   ======================================== */
.steps {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
}

.steps::before {
    content: '';
    position: absolute;
    left: 30px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: linear-gradient(180deg, var(--accent-green), var(--accent-blue));
}

.step-item {
    display: flex;
    gap: 2rem;
    padding: 2rem 0;
    position: relative;
}

.step-number {
    width: 60px;
    height: 60px;
    background: var(--bg-secondary);
    border: 2px solid var(--accent-green);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--accent-green);
    flex-shrink: 0;
    z-index: 1;
}

.step-content {
    padding-top: 0.5rem;
}

.step-title {
    font-size: 1.25rem;
    margin-bottom: 0.5rem;
}

.step-text {
    color: var(--text-secondary);
}

/* ========================================
   FAQ ACCORDION
   ======================================== */
.faq-list {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    background: var(--bg-secondary);
    border: 1px solid rgba(255, 255, 255, 0.05);
    border-radius: var(--border-radius);
    margin-bottom: 1rem;
    overflow: hidden;
}

.faq-question {
    width: 100%;
    padding: 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: none;
    border: none;
    font-family: var(--font-primary);
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
    cursor: pointer;
    text-align: left;
    transition: var(--transition-fast);
}

.faq-question:hover {
    color: var(--accent-green);
}

.faq-icon {
    width: 24px;
    height: 24px;
    transition: var(--transition-fast);
}

.faq-item.active .faq-icon {
    transform: rotate(180deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
}

.faq-item.active .faq-answer {
    max-height: 500px;
}

.faq-answer-content {
    padding: 0 1.5rem 1.5rem;
    color: var(--text-secondary);
}

/* FAQ Search */
.faq-search {
    max-width: 500px;
    margin: 0 auto 3rem;
    position: relative;
}

.faq-search input {
    width: 100%;
    padding: 1rem 1.5rem 1rem 3rem;
    background: var(--bg-secondary);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 50px;
    font-family: var(--font-primary);
    font-size: 1rem;
    color: var(--text-primary);
    outline: none;
    transition: var(--transition-fast);
}

.faq-search input:focus {
    border-color: var(--accent-green);
}

.faq-search input::placeholder {
    color: var(--text-muted);
}

.faq-search-icon {
    position: absolute;
    left: 1rem;
    top: 50%;
    transform: translateY(-50%);
    width: 20px;
    height: 20px;
    color: var(--text-muted);
}

/* ========================================
   REVIEWS / TESTIMONIALS
   ======================================== */
.reviews-carousel {
    position: relative;
    overflow: hidden;
}

.reviews-track {
    display: flex;
    gap: 2rem;
    transition: transform 0.5s ease;
}

.review-card {
    flex: 0 0 calc(33.333% - 1.333rem);
    background: var(--bg-secondary);
    border: 1px solid rgba(255, 255, 255, 0.05);
    border-radius: var(--border-radius-lg);
    padding: 2rem;
}

.review-stars {
    display: flex;
    gap: 0.25rem;
    margin-bottom: 1rem;
}

.review-stars svg {
    width: 20px;
    height: 20px;
    fill: var(--accent-gold);
}

.review-text {
    font-size: 1rem;
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    font-style: italic;
}

.review-author {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.review-avatar {
    width: 50px;
    height: 50px;
    background: var(--gradient-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    color: var(--bg-primary);
}

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

.review-role {
    font-size: 0.875rem;
    color: var(--text-muted);
}

.carousel-controls {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin-top: 2rem;
}

.carousel-btn {
    width: 50px;
    height: 50px;
    background: var(--bg-secondary);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: var(--transition-fast);
}

.carousel-btn:hover {
    background: var(--accent-green);
    border-color: var(--accent-green);
}

.carousel-btn svg {
    width: 20px;
    height: 20px;
    fill: var(--text-primary);
}

.carousel-btn:hover svg {
    fill: var(--bg-primary);
}

/* ========================================
   REGIONS MAP
   ======================================== */
.regions-map {
    background: var(--bg-secondary);
    border: 1px solid rgba(255, 255, 255, 0.05);
    border-radius: var(--border-radius-lg);
    padding: 3rem;
    margin-bottom: 3rem;
    position: relative;
    min-height: 400px;
}

.map-placeholder {
    width: 100%;
    height: 350px;
    background: var(--bg-tertiary);
    border-radius: var(--border-radius);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-muted);
    position: relative;
    overflow: hidden;
}

.map-placeholder::before {
    content: '';
    position: absolute;
    width: 100%;
    height: 100%;
    background:
        radial-gradient(circle at 20% 30%, rgba(0, 217, 165, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 70% 60%, rgba(59, 130, 246, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 50% 80%, rgba(245, 158, 11, 0.1) 0%, transparent 50%);
}

.regions-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
}

.region-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem 1.5rem;
    background: var(--bg-secondary);
    border: 1px solid rgba(255, 255, 255, 0.05);
    border-radius: var(--border-radius);
    transition: var(--transition-fast);
}

.region-item:hover {
    border-color: var(--accent-green);
}

.region-marker {
    width: 12px;
    height: 12px;
    background: var(--accent-green);
    border-radius: 50%;
    box-shadow: 0 0 10px var(--accent-green);
    animation: markerPulse 2s ease-in-out infinite;
}

@keyframes markerPulse {
    0%, 100% { transform: scale(1); opacity: 1; }
    50% { transform: scale(1.2); opacity: 0.7; }
}

.region-name {
    font-weight: 500;
}

.region-size {
    font-size: 0.875rem;
    color: var(--text-muted);
    margin-left: auto;
}

/* ========================================
   OFFLINE COMPARISON
   ======================================== */
.comparison-table {
    width: 100%;
    border-collapse: collapse;
    background: var(--bg-secondary);
    border-radius: var(--border-radius-lg);
    overflow: hidden;
}

.comparison-table th,
.comparison-table td {
    padding: 1.25rem 1.5rem;
    text-align: left;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.comparison-table th {
    background: var(--bg-tertiary);
    font-weight: 600;
    color: var(--text-primary);
}

.comparison-table td {
    color: var(--text-secondary);
}

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

.comparison-table .highlight {
    background: rgba(0, 217, 165, 0.1);
}

.comparison-table .check {
    color: var(--accent-green);
}

.comparison-table .cross {
    color: #EF4444;
}

/* ========================================
   TEAM SECTION
   ======================================== */
.team-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.team-card {
    text-align: center;
    padding: 2rem;
}

.team-avatar {
    width: 120px;
    height: 120px;
    background: var(--gradient-primary);
    border-radius: 50%;
    margin: 0 auto 1.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--bg-primary);
}

.team-name {
    font-size: 1.25rem;
    margin-bottom: 0.5rem;
}

.team-role {
    color: var(--accent-green);
    font-size: 0.9375rem;
    margin-bottom: 1rem;
}

.team-bio {
    color: var(--text-muted);
    font-size: 0.9375rem;
}

/* ========================================
   DOWNLOAD PAGE
   ======================================== */
.download-hero {
    padding: calc(var(--header-height) + 6rem) 0 6rem;
    text-align: center;
}

.download-box {
    background: var(--bg-secondary);
    border: 2px solid rgba(0, 217, 165, 0.3);
    border-radius: var(--border-radius-lg);
    padding: 3rem;
    max-width: 600px;
    margin: 3rem auto 0;
    box-shadow: 0 0 40px rgba(0, 217, 165, 0.1);
}

.download-icon {
    width: 80px;
    height: 80px;
    background: var(--gradient-primary);
    border-radius: 50%;
    margin: 0 auto 1.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
}

.download-icon svg {
    width: 40px;
    height: 40px;
    fill: white;
}

.download-filename {
    font-family: var(--font-display);
    font-size: 1.25rem;
    margin-bottom: 0.5rem;
}

.download-size {
    color: var(--text-muted);
    margin-bottom: 2rem;
}

.system-requirements {
    margin-top: 4rem;
}

.requirements-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.requirement-item {
    text-align: center;
    padding: 1.5rem;
    background: var(--bg-secondary);
    border-radius: var(--border-radius);
}

.requirement-icon {
    width: 50px;
    height: 50px;
    background: var(--bg-tertiary);
    border-radius: 50%;
    margin: 0 auto 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
}

.requirement-icon svg {
    width: 24px;
    height: 24px;
    fill: var(--accent-green);
}

.requirement-label {
    font-weight: 600;
    margin-bottom: 0.25rem;
}

.requirement-value {
    color: var(--text-muted);
    font-size: 0.9375rem;
}

/* Installation steps */
.install-steps {
    margin-top: 4rem;
    text-align: left;
}

.install-step {
    display: flex;
    gap: 1.5rem;
    padding: 1.5rem 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.install-step:last-child {
    border-bottom: none;
}

.install-number {
    width: 40px;
    height: 40px;
    background: var(--accent-green);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    color: var(--bg-primary);
    flex-shrink: 0;
}

.install-content h4 {
    margin-bottom: 0.5rem;
}

.install-content p {
    color: var(--text-muted);
    margin-bottom: 0;
}

/* ========================================
   STATISTICS
   ======================================== */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
}

.stat-card {
    text-align: center;
    padding: 2rem;
    background: var(--bg-secondary);
    border-radius: var(--border-radius-lg);
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.stat-card .stat-value {
    font-size: 3rem;
    margin-bottom: 0.5rem;
}

.stat-card .stat-label {
    font-size: 1rem;
    color: var(--text-secondary);
}

/* ========================================
   CONTACT INFO
   ======================================== */
.contact-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.contact-card {
    padding: 2rem;
}

.contact-icon {
    width: 50px;
    height: 50px;
    background: var(--gradient-primary);
    border-radius: var(--border-radius);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1rem;
}

.contact-icon svg {
    width: 24px;
    height: 24px;
    fill: white;
}

.contact-title {
    font-size: 1rem;
    color: var(--text-muted);
    margin-bottom: 0.5rem;
}

.contact-value {
    font-size: 1.125rem;
    color: var(--text-primary);
}

/* ========================================
   ANIMATIONS
   ======================================== */
.fade-up {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

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

.fade-left {
    opacity: 0;
    transform: translateX(-30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-left.visible {
    opacity: 1;
    transform: translateX(0);
}

.fade-right {
    opacity: 0;
    transform: translateX(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-right.visible {
    opacity: 1;
    transform: translateX(0);
}

.scale-in {
    opacity: 0;
    transform: scale(0.9);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.scale-in.visible {
    opacity: 1;
    transform: scale(1);
}

/* Stagger animation delay */
.stagger-1 { transition-delay: 0.1s; }
.stagger-2 { transition-delay: 0.2s; }
.stagger-3 { transition-delay: 0.3s; }
.stagger-4 { transition-delay: 0.4s; }
.stagger-5 { transition-delay: 0.5s; }
.stagger-6 { transition-delay: 0.6s; }

/* ========================================
   RESPONSIVE
   ======================================== */
@media (max-width: 1024px) {
    .hero-globe {
        width: 50%;
        right: -5%;
    }

    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    :root {
        --header-height: 70px;
    }

    .nav-menu {
        position: fixed;
        top: var(--header-height);
        left: 0;
        width: 100%;
        height: calc(100vh - var(--header-height));
        background: var(--bg-primary);
        flex-direction: column;
        padding: 2rem;
        gap: 0;
        transform: translateX(-100%);
        transition: var(--transition-normal);
    }

    .nav-menu.active {
        transform: translateX(0);
    }

    .nav-link {
        padding: 1rem;
        font-size: 1.125rem;
        border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    }

    .nav-toggle {
        display: flex;
    }

    .nav .btn {
        display: none;
    }

    .hero {
        text-align: center;
    }

    .hero-content {
        max-width: 100%;
    }

    .hero-subtitle {
        margin: 0 auto 2rem;
    }

    .hero-buttons {
        justify-content: center;
    }

    .hero-stats {
        justify-content: center;
    }

    .hero-globe {
        position: relative;
        right: auto;
        top: auto;
        transform: none;
        width: 100%;
        height: 300px;
        margin-top: 2rem;
    }

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

    .footer-grid {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .footer-brand {
        max-width: 100%;
    }

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

    .steps::before {
        left: 20px;
    }

    .step-number {
        width: 40px;
        height: 40px;
        font-size: 1rem;
    }

    .step-item {
        gap: 1rem;
    }

    .review-card {
        flex: 0 0 100%;
    }

    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 1rem;
    }

    .stat-card .stat-value {
        font-size: 2rem;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 1rem;
    }

    .section {
        padding: 4rem 0;
    }

    .btn-large {
        padding: 1rem 2rem;
        font-size: 1rem;
    }

    .hero-stats {
        flex-direction: column;
        gap: 1.5rem;
        align-items: center;
    }

    .stat-item {
        text-align: center;
    }

    .card {
        padding: 1.5rem;
    }

    .download-box {
        padding: 2rem 1.5rem;
    }
}

/* ========================================
   PARTICLES (GPS signals effect)
   ======================================== */
.particles {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 0;
    overflow: hidden;
}

.particle {
    position: absolute;
    width: 4px;
    height: 4px;
    background: var(--accent-green);
    border-radius: 50%;
    opacity: 0.3;
    animation: particleFloat 15s linear infinite;
}

@keyframes particleFloat {
    0% {
        transform: translateY(100vh) translateX(0);
        opacity: 0;
    }
    10% {
        opacity: 0.3;
    }
    90% {
        opacity: 0.3;
    }
    100% {
        transform: translateY(-100vh) translateX(100px);
        opacity: 0;
    }
}

/* ========================================
   UTILITY CLASSES
   ======================================== */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

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

.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.mt-4 { margin-top: 2rem; }
.mt-5 { margin-top: 3rem; }

.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 1.5rem; }
.mb-4 { margin-bottom: 2rem; }
.mb-5 { margin-bottom: 3rem; }

.hidden { display: none; }
.visible { display: block; }