:root {
    --bg-color: #050505;
    --text-primary: #ffffff;
    --text-secondary: #a0a0a5;
    --accent-color: #0a84ff;
    --accent-glow: rgba(10, 132, 255, 0.4);
    --card-bg: rgba(255, 255, 255, 0.03);
    --card-border: rgba(255, 255, 255, 0.08);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
}

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

/* Background Effects */
.background-effects {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    z-index: -1;
    overflow: hidden;
}

.glow-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(120px);
    opacity: 0.5;
    animation: float 20s infinite ease-in-out alternate;
}

.orb-1 {
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, #0a84ff 0%, rgba(10, 132, 255, 0) 70%);
    top: -200px;
    right: -100px;
}

.orb-2 {
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, #5e5ce6 0%, rgba(94, 92, 230, 0) 70%);
    bottom: -100px;
    left: -200px;
    animation-delay: -5s;
}

@keyframes float {
    0% { transform: translate(0, 0) scale(1); }
    50% { transform: translate(-50px, 30px) scale(1.1); }
    100% { transform: translate(20px, -40px) scale(0.9); }
}

/* Typography & Utilities */
.gradient-text {
    background: linear-gradient(135deg, #0a84ff, #5e5ce6, #bf5af2);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Navigation */
nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 2rem 5%;
    background: rgba(5, 5, 5, 0.5);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    position: sticky;
    top: 0;
    z-index: 100;
    border-bottom: 1px solid var(--card-border);
}

.logo {
    font-weight: 800;
    font-size: 1.5rem;
    letter-spacing: -0.5px;
}

.nav-links a {
    color: var(--text-secondary);
    text-decoration: none;
    margin-left: 2rem;
    font-weight: 500;
    transition: color 0.3s;
}

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

.lang-selector {
    margin-left: 2rem;
    background: rgba(255, 255, 255, 0.1);
    color: var(--text-primary);
    border: 1px solid var(--card-border);
    padding: 6px 12px;
    border-radius: 8px;
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    outline: none;
    transition: all 0.3s ease;
}

.lang-selector:hover {
    background: rgba(255, 255, 255, 0.15);
    border-color: var(--accent-color);
}

.lang-selector option {
    background: var(--bg-color);
    color: var(--text-primary);
}

/* Hero Section */
.hero {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 85vh;
    text-align: center;
    padding: 6rem 5% 4rem 5%;
}

.badge {
    background: rgba(10, 132, 255, 0.1);
    color: #5ac8fa;
    padding: 6px 16px;
    border-radius: 30px;
    font-size: 0.85rem;
    font-weight: 600;
    border: 1px solid rgba(10, 132, 255, 0.2);
    margin-bottom: 2rem;
    display: inline-block;
}

.hero h1 {
    font-size: 4.5rem;
    font-weight: 800;
    line-height: 1.1;
    letter-spacing: -1.5px;
    margin-bottom: 1.5rem;
}

.hero p {
    font-size: 1.25rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto 3rem auto;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 14px 32px;
    border-radius: 12px;
    font-size: 1.1rem;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.3s ease;
}

.btn-primary {
    background: var(--text-primary);
    color: var(--bg-color);
    box-shadow: 0 0 0 rgba(255, 255, 255, 0);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 20px var(--card-border);
}

.cta-group {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
    margin-bottom: 4rem;
}

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

/* Floating App Icon */
.floating-icon {
    width: 256px;
    height: 256px;
    filter: drop-shadow(0 30px 40px rgba(0, 0, 0, 0.5));
    animation: float-icon 6s infinite ease-in-out;
}

@keyframes float-icon {
    0% { transform: translateY(0); }
    50% { transform: translateY(-15px); }
    100% { transform: translateY(0); }
}

/* Features Section */
.features {
    padding: 8rem 5%;
    background: linear-gradient(to bottom, transparent, rgba(10, 132, 255, 0.03));
}

.section-header {
    text-align: center;
    margin-bottom: 5rem;
}

.section-header h2 {
    font-size: 3rem;
    font-weight: 800;
    letter-spacing: -1px;
    margin-bottom: 1rem;
}

.section-header p {
    font-size: 1.2rem;
    color: var(--text-secondary);
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.feature-card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 24px;
    padding: 2.5rem;
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    transition: transform 0.3s, border-color 0.3s;
}

.feature-card:hover {
    transform: translateY(-5px);
    border-color: rgba(255, 255, 255, 0.2);
}

.feature-icon {
    font-size: 2.5rem;
    margin-bottom: 1.5rem;
}

.feature-card h3 {
    font-size: 1.3rem;
    margin-bottom: 1rem;
    font-weight: 600;
}

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

code {
    background: rgba(255, 255, 255, 0.1);
    padding: 2px 6px;
    border-radius: 4px;
    font-family: monospace;
    color: var(--text-primary);
}

/* Footer */
footer {
    border-top: 1px solid var(--card-border);
    padding: 3rem 5%;
    text-align: center;
    color: var(--text-secondary);
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

/* Responsive */
@media (max-width: 768px) {
    .hero h1 { font-size: 3rem; }
    .hero p { font-size: 1.1rem; }
    .footer-content { flex-direction: column; gap: 1rem; }
}