:root {
    --kav-bg: #080810;
    --kav-surface: #0f0f1a;
    --kav-border: #1a1a2e;
    --kav-green: #00ff64;
    --kav-purple: #7B2FBE;
    --kav-muted: #6b6b80;
    --kav-dim: #3a3a50;
    --font-heading: 'JetBrains Mono', 'Fira Code', ui-monospace, monospace;
    --font-body: system-ui, -apple-system, sans-serif;
}

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

body {
    font-family: var(--font-body);
    background: var(--kav-bg);
    color: #fff;
    line-height: 1.6;
}

h1, h2, h3, h4 { font-family: var(--font-heading); }

a { color: var(--kav-green); text-decoration: none; }
a:hover { opacity: 0.8; }

.btn {
    display: inline-block;
    padding: 0.5rem 1rem;
    border-radius: 0.375rem;
    font-size: 0.875rem;
    font-weight: 600;
    cursor: pointer;
    border: none;
    transition: opacity 0.15s;
}
.btn:hover { opacity: 0.8; }
.btn-primary { background: var(--kav-green); color: var(--kav-bg); }
.btn-secondary { background: transparent; border: 1px solid var(--kav-purple); color: #fff; }

.container { max-width: 72rem; margin: 0 auto; padding: 0 1.5rem; }

input, textarea, select {
    background: var(--kav-surface);
    border: 1px solid var(--kav-border);
    color: #fff;
    padding: 0.5rem 0.75rem;
    border-radius: 0.375rem;
    font-size: 0.875rem;
    width: 100%;
}
input:focus, textarea:focus, select:focus {
    outline: none;
    border-color: var(--kav-green);
}

.text-muted { color: var(--kav-muted); }
.text-dim { color: var(--kav-dim); }
.text-green { color: var(--kav-green); }
.text-purple { color: var(--kav-purple); }

/* Navigation */
.nav { position: sticky; top: 0; z-index: 50; background: rgba(8,8,16,0.9); backdrop-filter: blur(8px); border-bottom: 1px solid var(--kav-border); }
.nav-inner { display: flex; align-items: center; justify-content: space-between; max-width: 72rem; margin: 0 auto; padding: 1rem 1.5rem; }
.nav-logo { display: flex; align-items: center; gap: 0.5rem; font-family: var(--font-heading); font-weight: 700; font-size: 1.125rem; color: #fff; text-decoration: none; }
.nav-logo:hover { color: var(--kav-green); opacity: 1; }
.nav-links { display: flex; align-items: center; gap: 1.5rem; }
.nav-link { color: var(--kav-muted); font-size: 0.875rem; text-decoration: none; }
.nav-link:hover { color: var(--kav-green); opacity: 1; }

/* Hero */
.hero { position: relative; display: flex; flex-direction: column; align-items: center; justify-content: center; min-height: 70vh; padding: 6rem 1.5rem; text-align: center; overflow: hidden; }
.hero-grid { position: absolute; inset: 0; pointer-events: none; background-image: linear-gradient(rgba(0,255,100,0.03) 1px, transparent 1px), linear-gradient(90deg, rgba(0,255,100,0.03) 1px, transparent 1px); background-size: 60px 60px; }
.hero-content { position: relative; }
.hero h1 { font-size: 3.5rem; letter-spacing: 0.05em; }
.hero .tagline { margin-top: 0.75rem; font-family: var(--font-heading); font-size: 0.875rem; letter-spacing: 0.3em; color: var(--kav-purple); text-transform: uppercase; }
.hero .subtitle { margin-top: 1rem; font-size: 1.25rem; color: var(--kav-muted); }
.hero-actions { display: flex; gap: 1rem; margin-top: 2rem; justify-content: center; }

/* Sections */
.section { padding: 4rem 1.5rem; border-top: 1px solid var(--kav-border); }
.section-inner { max-width: 42rem; margin: 0 auto; }

/* Footer */
.footer { border-top: 1px solid var(--kav-border); padding: 3rem 1.5rem; }
.footer-inner { max-width: 72rem; margin: 0 auto; display: flex; justify-content: space-between; align-items: start; flex-wrap: wrap; gap: 2rem; }
.footer-brand { font-family: var(--font-heading); font-weight: 700; }
.footer-copy { margin-top: 2rem; font-size: 0.75rem; color: var(--kav-dim); max-width: 72rem; margin-left: auto; margin-right: auto; padding: 0 1.5rem; }

/* Forms */
.form-group { margin-bottom: 1rem; }
.form-label { display: block; font-size: 0.875rem; font-weight: 500; color: #ddd; margin-bottom: 0.25rem; }
.form-success { padding: 1rem; border: 1px solid rgba(0,255,100,0.3); background: rgba(0,255,100,0.1); border-radius: 0.375rem; color: var(--kav-green); }

/* Responsive */
@media (max-width: 640px) {
    .hero h1 { font-size: 2.5rem; }
    .hero-actions { flex-direction: column; align-items: center; }
    .footer-inner { flex-direction: column; }
    .nav-links { gap: 1rem; }
}