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

:root {
    --bg-primary: #0a0a0a;
    --bg-secondary: #111111;
    --bg-card: #161616;
    --text-primary: #ffffff;
    --text-secondary: #a0a0a0;
    --border-color: #222222;
}

html {
    scroll-behavior: smooth;
}

/* Text Selection */
::selection {
    background-color: rgba(255, 255, 255, 0.2);
    color: #ffffff;
}

::-moz-selection {
    background-color: rgba(255, 255, 255, 0.2);
    color: #ffffff;
}

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

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

@keyframes scaleIn {
    from {
        opacity: 0;
        transform: scale(0.95);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

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

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

.fade-in-delay-1 { transition-delay: 0.1s; }
.fade-in-delay-2 { transition-delay: 0.2s; }
.fade-in-delay-3 { transition-delay: 0.3s; }
.fade-in-delay-4 { transition-delay: 0.4s; }

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background-color: rgba(10, 10, 10, 0.9);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
    z-index: 1000;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 64px;
}

.logo {
    font-family: 'Poppins', sans-serif;
    font-size: 1.5rem;
    font-weight: 900;
    color: var(--text-primary);
    text-decoration: none;
    letter-spacing: -0.08em;
}

.nav-center {
    display: flex;
    align-items: center;
    gap: 24px;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 32px;
}

.nav-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.9rem;
    transition: color 0.2s;
}

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

.lang-switch {
    display: flex;
    gap: 4px;
}

.lang-btn {
    background: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    padding: 6px 10px;
    font-size: 0.75rem;
    font-weight: 600;
    border-radius: 4px;
    cursor: pointer;
    transition: all 0.2s ease;
}

.lang-btn:hover {
    color: var(--text-primary);
    border-color: #444;
}

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

.btn.btn-nav {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.5rem 1rem;
    font-size: 0.85rem;
    border-radius: 20px;
    position: relative;
    cursor: default;
}

.btn.btn-nav::after {
    content: attr(data-tooltip);
    position: absolute;
    top: calc(100% + 8px);
    left: 50%;
    transform: translateX(-50%) translateY(4px);
    background-color: var(--bg-card);
    color: var(--text-secondary);
    border: 1px solid var(--border-color);
    padding: 4px 10px;
    border-radius: 6px;
    font-size: 0.7rem;
    font-weight: 500;
    white-space: nowrap;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.2s ease, transform 0.2s ease;
}

.btn.btn-nav:hover::after {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
}

.btn.btn-nav:hover {
    opacity: 0.9;
    transform: none;
}

/* Hero */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 120px 24px 80px;
    position: relative;
    overflow: hidden;
}

.hero-video-container {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
}

.hero-video {
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0;
    transition: opacity 0.8s ease-out;
}

.hero-video.loaded {
    opacity: 1;
}

.hero-video-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(
        to bottom,
        rgba(10, 10, 10, 0.6) 0%,
        rgba(10, 10, 10, 0.7) 50%,
        rgba(10, 10, 10, 0.95) 100%
    );
}

.hero-content {
    max-width: 700px;
    animation: fadeInUp 0.8s ease forwards;
    position: relative;
    z-index: 1;
}

.hero-content .hero-headline {
    animation: fadeInUp 0.8s ease 0.1s forwards;
    opacity: 0;
}

.hero-content .hero-description {
    animation: fadeInUp 0.8s ease 0.2s forwards;
    opacity: 0;
}

.hero-content .btn {
    animation: fadeInUp 0.8s ease 0.3s forwards;
    opacity: 0;
}

.hero-headline {
    font-family: 'Poppins', sans-serif;
    font-size: clamp(2.5rem, 8vw, 4.5rem);
    font-weight: 900;
    letter-spacing: -0.03em;
    line-height: 1.1;
    margin-bottom: 24px;
}

.hero-description {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: 40px;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 14px 32px;
    background-color: var(--text-primary);
    color: var(--bg-primary);
    text-decoration: none;
    font-weight: 600;
    font-size: 0.95rem;
    border-radius: 8px;
    transition: opacity 0.2s, transform 0.2s;
}

.btn:hover {
    opacity: 0.9;
    transform: translateY(-1px);
}

.btn svg {
    display: inline-block;
    vertical-align: middle;
    margin-left: 6px;
    margin-top: -2px;
    transition: transform 0.2s ease;
}

.btn:hover svg {
    transform: translateX(2px);
}

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

.btn-secondary:hover {
    background-color: #1a1a1a;
    opacity: 1;
}

/* Sections */
section {
    padding: 100px 0;
}

section h2 {
    font-size: 2.5rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: 16px;
    letter-spacing: -1px;
}

.section-description {
    text-align: center;
    color: var(--text-secondary);
    font-size: 1.1rem;
    margin-bottom: 60px;
}

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

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 24px;
    margin-top: 60px;
}

.feature-card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 32px;
    transition: border-color 0.3s ease, transform 0.3s ease, box-shadow 0.3s ease;
}

.feature-card:hover {
    border-color: #444;
    transform: translateY(-4px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

.feature-icon {
    color: var(--text-primary);
    margin-bottom: 20px;
}

.feature-card h3 {
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 12px;
}

.feature-card p {
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.6;
}

/* Pricing */
.pricing {
    background-color: var(--bg-secondary);
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 24px;
    max-width: 800px;
    margin: 0 auto;
}

.pricing-card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 40px 32px;
    text-align: center;
    position: relative;
    transition: border-color 0.3s ease, transform 0.3s ease, box-shadow 0.3s ease;
}

.pricing-card:hover {
    border-color: #444;
    transform: translateY(-4px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

.pricing-card-featured {
    border-color: #444;
}

.pricing-badge {
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    background-color: var(--text-primary);
    color: var(--bg-primary);
    padding: 6px 16px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
}

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

.pricing-header h3 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 16px;
}

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

.pricing-price .price {
    font-size: 3rem;
    font-weight: 700;
    letter-spacing: -2px;
}

.pricing-price .currency {
    font-size: 1.5rem;
    font-weight: 600;
}

.pricing-price .period {
    font-size: 1rem;
    color: var(--text-secondary);
}

.pricing-features {
    list-style: none;
    margin-bottom: 32px;
    text-align: left;
}

.pricing-features li {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 0;
    border-bottom: 1px solid var(--border-color);
    font-size: 0.95rem;
}

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

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

.pricing-features .feature-disabled {
    color: var(--text-secondary);
}

.pricing-features .feature-disabled svg {
    color: var(--text-secondary);
}

.pricing-card .btn {
    width: 100%;
}

.pricing-options {
    margin-top: 16px;
    color: var(--text-secondary);
    font-size: 0.85rem;
}

.pricing-divider {
    margin: 0 8px;
}

/* Download */
.download {
    background-color: var(--bg-secondary);
}

.download-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 24px;
}

.download-card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 40px 32px;
    text-align: center;
    transition: border-color 0.3s ease, transform 0.3s ease, box-shadow 0.3s ease;
}

.download-card:hover {
    border-color: #444;
    transform: translateY(-4px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

.platform-icon {
    color: var(--text-primary);
    margin-bottom: 20px;
}

.download-card h3 {
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: 8px;
}

.download-card p {
    color: var(--text-secondary);
    margin-bottom: 24px;
}

/* Installation */
.installation {
    background-color: var(--bg-primary);
}

.steps {
    max-width: 700px;
    margin: 0 auto;
}

.step {
    display: flex;
    gap: 24px;
    margin-bottom: 40px;
}

.step:last-child {
    margin-bottom: 0;
}

.step-number {
    flex-shrink: 0;
    width: 48px;
    height: 48px;
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 1.2rem;
}

.step-content h3 {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 8px;
}

.step-content p {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

.url-box {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 16px 20px;
    margin-top: 12px;
    display: inline-block;
}

.url-box code {
    font-family: 'SF Mono', Monaco, 'Courier New', monospace;
    font-size: 1rem;
    color: var(--text-primary);
}

/* Footer */
.footer {
    background-color: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
    padding: 60px 0 40px;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 40px;
}

.footer-brand p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-top: 8px;
}

.footer-links {
    display: flex;
    gap: 32px;
}

.footer-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.9rem;
    transition: color 0.2s;
}

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

.legal-notice {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 20px 24px;
    margin-bottom: 40px;
}

.legal-notice p {
    color: var(--text-secondary);
    font-size: 0.85rem;
    line-height: 1.7;
}

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

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

/* Legal Pages */
.legal-page {
    padding: 120px 0 80px;
    min-height: calc(100vh - 200px);
}

.back-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.9rem;
    margin-bottom: 24px;
    transition: color 0.2s;
}

.back-link:hover {
    color: var(--text-primary);
}

.back-link svg {
    transition: transform 0.2s;
}

.back-link:hover svg {
    transform: translateX(-3px);
}

.legal-page h1 {
    font-family: 'Poppins', sans-serif;
    font-size: 2.5rem;
    font-weight: 900;
    letter-spacing: -0.04em;
    margin-bottom: 40px;
}

.legal-section {
    margin-bottom: 32px;
    padding: 0;
}

.legal-section h2 {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 12px;
    text-align: left;
}

.legal-section h3 {
    font-size: 1rem;
    font-weight: 600;
    margin: 16px 0 8px;
    color: var(--text-secondary);
}

.legal-section p {
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 8px;
    font-size: 0.95rem;
}

.legal-section ul {
    color: var(--text-secondary);
    line-height: 1.7;
    margin: 12px 0;
    padding-left: 24px;
    font-size: 0.95rem;
}

.legal-section li {
    margin-bottom: 4px;
}

.legal-section a {
    color: var(--text-primary);
    text-decoration: underline;
}

.legal-date {
    color: var(--text-secondary);
    font-size: 0.85rem;
    font-style: italic;
    margin-top: 32px;
}

/* Responsive */
@media (max-width: 768px) {
    .nav-links,
    .btn-nav {
        display: none;
    }

    .nav-center {
        display: flex;
    }

    .hero {
        padding: 100px 24px 60px;
    }

    section {
        padding: 80px 0;
    }

    section h2 {
        font-size: 2rem;
    }

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

    .step-number {
        margin: 0 auto;
    }

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

    .footer-links {
        flex-wrap: wrap;
        justify-content: center;
        gap: 20px;
    }
}