/* Design System & Variables */
:root {
    --bg-dark: #0a0a12;
    --bg-card: rgba(255, 255, 255, 0.05);
    --primary: #7000ff;
    --primary-glow: #bc00ff;
    --accent: #00f0ff;
    --text-main: #ffffff;
    --text-muted: #a0a0b0;
    --font-main: 'Outfit', sans-serif;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
    background-color: var(--bg-dark);
    color: var(--text-main);
    font-family: var(--font-main);
    line-height: 1.6;
    overflow-x: hidden;
    min-height: 100vh;
    background-image: 
        radial-gradient(circle at 10% 20%, rgba(112, 0, 255, 0.15) 0%, transparent 40%),
        radial-gradient(circle at 90% 80%, rgba(0, 240, 255, 0.1) 0%, transparent 40%);
}

/* Typography */
h1, h2, h3 {
    font-weight: 700;
    line-height: 1.1;
    letter-spacing: -0.02em;
}

h1 {
    font-size: clamp(3rem, 8vw, 5rem);
    background: linear-gradient(to right, #fff, #a0a0b0);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 1.5rem;
}

h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

p {
    color: var(--text-muted);
    font-size: 1.1rem;
    max-width: 60ch;
}

/* Layout */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    padding: 1.5rem 0;
    z-index: 100;
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--text-main);
    text-decoration: none;
    letter-spacing: 0.05em;
    text-transform: uppercase;
}

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

.nav-links a {
    color: var(--text-muted);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition);
}

.nav-links a:hover {
    color: var(--text-main);
    text-shadow: 0 0 10px rgba(255, 255, 255, 0.5);
}

/* Hero Section */
.hero {
    height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    padding-top: 80px;
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 800px;
}

.hero-tag {
    display: inline-block;
    padding: 0.5rem 1rem;
    border-radius: 50px;
    background: rgba(112, 0, 255, 0.1);
    border: 1px solid rgba(112, 0, 255, 0.3);
    color: var(--accent);
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

.btn {
    display: inline-block;
    padding: 1rem 2.5rem;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    margin-top: 2rem;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.btn-primary {
    background: var(--text-main);
    color: var(--bg-dark);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(255, 255, 255, 0.2);
}

/* Features Grid */
.features {
    padding: 8rem 0;
}

.grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 4rem;
}

.card {
    background: var(--bg-card);
    border: 1px solid rgba(255, 255, 255, 0.05);
    padding: 2.5rem;
    border-radius: 1.5rem;
    transition: var(--transition);
    cursor: default;
}

.card:hover {
    transform: translateY(-5px);
    background: rgba(255, 255, 255, 0.08);
    border-color: rgba(255, 255, 255, 0.1);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.2);
}

.card-icon {
    font-size: 2rem;
    margin-bottom: 1.5rem;
    color: var(--accent);
}

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

/* Animations */
@keyframes float {
    0% { transform: translateY(0px); }
    50% { transform: translateY(-20px); }
    100% { transform: translateY(0px); }
}

.floating-orb {
    position: absolute;
    width: 300px;
    height: 300px;
    border-radius: 50%;
    background: radial-gradient(circle, var(--primary-glow), transparent 70%);
    opacity: 0.2;
    filter: blur(60px);
    z-index: 0;
    animation: float 10s infinite ease-in-out;
}

.orb-1 { top: 20%; right: 10%; }
.orb-2 { bottom: 20%; left: 5%; animation-delay: -5s; background: radial-gradient(circle, var(--accent), transparent 70%); }

/* Responsive */
@media (max-width: 768px) {
    h1 { font-size: 3rem; }
    .nav-links { display: none; } /* Simple hide for now, can add toggle later */
}