:root {
    --bg-dark: #09090b;
    --text-main: #f8fafc;
    --text-muted: #94a3b8;
    --primary: #00f2fe;
    --primary-glow: rgba(0, 242, 254, 0.3);
    --secondary: #4facfe;
    --card-bg: rgba(255, 255, 255, 0.03);
    --card-border: rgba(255, 255, 255, 0.08);
}

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

body {
    font-family: 'Outfit', sans-serif;
    background-color: var(--bg-dark);
    color: var(--text-main);
    overflow-x: hidden;
    line-height: 1.6;
}

/* Background glows */
.bg-glow {
    position: absolute;
    border-radius: 50%;
    filter: blur(100px);
    z-index: -1;
    opacity: 0.5;
}

.glow-1 {
    top: -10%;
    left: -10%;
    width: 50vw;
    height: 50vw;
    background: radial-gradient(circle, var(--primary-glow) 0%, transparent 70%);
}

.glow-2 {
    bottom: -10%;
    right: -10%;
    width: 60vw;
    height: 60vw;
    background: radial-gradient(circle, rgba(79, 172, 254, 0.2) 0%, transparent 70%);
}

/* Navbar */
.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 2rem 5%;
    background: rgba(9, 9, 11, 0.7);
    backdrop-filter: blur(10px);
    position: sticky;
    top: 0;
    z-index: 100;
    border-bottom: 1px solid var(--card-border);
}

.logo {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    line-height: 1;
}

.logo-main {
    font-size: 2.2rem;
    font-weight: 800;
    letter-spacing: -1px;
    color: var(--text-main);
}

.logo-dai {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.logo-sub {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    margin-left: 0.1rem;
}

.logo-text {
    font-size: 0.85rem;
    font-weight: 600;
    letter-spacing: 2px;
    text-transform: uppercase;
    color: var(--text-muted);
}

.badge {
    background: linear-gradient(135deg, #f59e0b, #ef4444);
    color: white;
    font-size: 0.7rem;
    padding: 0.2rem 0.5rem;
    border-radius: 4px;
    font-weight: 800;
}

.nav-links {
    list-style: none;
    display: flex;
    gap: 2rem;
}

.nav-links a {
    color: var(--text-muted);
    text-decoration: none;
    font-weight: 600;
    transition: color 0.3s;
}

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

/* Hero */
.hero {
    display: flex;
    align-items: center;
    justify-content: space-between;
    min-height: 80vh;
    padding: 0 5%;
    gap: 4rem;
}

.hero-content {
    flex: 1;
    max-width: 600px;
}

.pill {
    display: inline-block;
    padding: 0.5rem 1rem;
    background: rgba(0, 242, 254, 0.1);
    color: var(--primary);
    border: 1px solid var(--primary-glow);
    border-radius: 50px;
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
    letter-spacing: 1px;
}

h1 {
    font-size: 4rem;
    line-height: 1.1;
    margin-bottom: 1.5rem;
    font-weight: 800;
    letter-spacing: -1px;
}

.hero-content p {
    font-size: 1.2rem;
    color: var(--text-muted);
    margin-bottom: 2.5rem;
}

.cta-group {
    display: flex;
    gap: 1rem;
}

.btn {
    padding: 1rem 2rem;
    border-radius: 8px;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.3s ease;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.btn .icon {
    width: 24px;
    height: 24px;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: #000;
    box-shadow: 0 0 20px var(--primary-glow);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 0 30px var(--primary-glow);
}

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

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.1);
}

/* Radar Animation (Hero Visual) */
.hero-visual {
    flex: 1;
    display: flex;
    justify-content: center;
    align-items: center;
}

.radar-container {
    position: relative;
    width: 400px;
    height: 400px;
    border-radius: 50%;
    background: rgba(0, 242, 254, 0.05);
    border: 1px solid rgba(0, 242, 254, 0.2);
    display: flex;
    justify-content: center;
    align-items: center;
    box-shadow: 0 0 50px rgba(0, 242, 254, 0.1);
}

.radar-circle {
    position: absolute;
    border-radius: 50%;
    border: 1px solid rgba(0, 242, 254, 0.2);
}

.circle-1 { width: 100px; height: 100px; }
.circle-2 { width: 200px; height: 200px; }
.circle-3 { width: 300px; height: 300px; }

.radar-sweep {
    position: absolute;
    width: 200px;
    height: 200px;
    background: conic-gradient(from 0deg, transparent 70%, rgba(0, 242, 254, 0.4) 100%);
    border-radius: 50%;
    top: 0;
    left: 200px;
    transform-origin: 0 100%;
    animation: sweep 4s linear infinite;
}

@keyframes sweep {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.sound-wave {
    position: absolute;
    display: flex;
    align-items: center;
    gap: 4px;
    z-index: 10;
}

.bar {
    width: 6px;
    background: var(--primary);
    border-radius: 3px;
    animation: sound 1s ease-in-out infinite alternate;
}

.bar:nth-child(1) { height: 20px; animation-delay: 0.1s; }
.bar:nth-child(2) { height: 40px; animation-delay: 0.2s; }
.bar:nth-child(3) { height: 70px; animation-delay: 0.3s; }
.bar:nth-child(4) { height: 100px; animation-delay: 0.4s; }
.bar:nth-child(5) { height: 60px; animation-delay: 0.5s; }
.bar:nth-child(6) { height: 30px; animation-delay: 0.6s; }
.bar:nth-child(7) { height: 15px; animation-delay: 0.7s; }

@keyframes sound {
    0% { transform: scaleY(0.5); opacity: 0.5; }
    100% { transform: scaleY(1); opacity: 1; box-shadow: 0 0 10px var(--primary); }
}

/* Features */
.features {
    padding: 6rem 5%;
    position: relative;
    z-index: 10;
}

.section-title {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 4rem;
}

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

.card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 16px;
    padding: 2.5rem;
    backdrop-filter: blur(20px);
    transition: transform 0.3s, box-shadow 0.3s;
}

.card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
    border-color: rgba(0, 242, 254, 0.3);
}

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

.card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

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

footer {
    text-align: center;
    padding: 2rem;
    border-top: 1px solid var(--card-border);
    color: var(--text-muted);
    font-size: 0.9rem;
}

/* Responsive */
@media (max-width: 900px) {
    .hero {
        flex-direction: column;
        text-align: center;
        padding-top: 4rem;
    }
    
    h1 { font-size: 3rem; }
    
    .cta-group {
        justify-content: center;
    }
    
    .radar-container {
        width: 300px;
        height: 300px;
    }
    
    .radar-sweep {
        width: 150px;
        height: 150px;
        left: 150px;
    }
}