@import url('https://fonts.googleapis.com/css2?family=Syne:wght@400;600;700;800&family=Space+Grotesk:wght@300;400;500;600;700&family=Space+Mono:wght@400;700&display=swap');

:root {
  --bg: #0D0F14;
  --bg2: #111318;
  --surface: #161920;
  --surface2: #1c2029;
  --border: rgba(255,255,255,0.07);
  --primary: #FF6B47;
  --secondary: #7C5CFF;
  --accent: #00D4B4;
  --gold: #FFB547;
  --correct: #22C55E;
  --incorrect: #EF4444;
  --text: #F1F3F8;
  --text2: #8B92A5;
  --text3: #4A5168;
  --grad-primary: linear-gradient(135deg, #FF6B47, #FF8C6B);
  --grad-secondary: linear-gradient(135deg, #7C5CFF, #9B7FFF);
  --grad-accent: linear-gradient(135deg, #00D4B4, #00B89C);
  --grad-hero: linear-gradient(135deg, #FF6B47 0%, #7C5CFF 50%, #00D4B4 100%);
}

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

html { scroll-behavior: smooth; }

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

/* ── NOISE OVERLAY ── */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)' opacity='0.03'/%3E%3C/svg%3E");
  pointer-events: none;
  z-index: 0;
  opacity: 0.4;
}

/* ── NAVBAR ── */
nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  padding: 0 5%;
  height: 68px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: rgba(13,15,20,0.85);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
}

.logo-icon {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  background: var(--grad-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  box-shadow: 0 4px 16px rgba(255,107,71,0.35);
}

.logo-text {
  font-family: 'Syne', sans-serif;
  font-weight: 800;
  font-size: 20px;
  color: var(--text);
  letter-spacing: -0.5px;
}

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

.nav-links a {
  color: var(--text2);
  text-decoration: none;
  font-size: 14px;
  font-weight: 500;
  transition: color 0.2s;
}

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

.nav-cta {
  display: flex;
  align-items: center;
  gap: 12px;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 20px;
  border-radius: 10px;
  font-family: 'Syne', sans-serif;
  font-weight: 700;
  font-size: 14px;
  cursor: pointer;
  text-decoration: none;
  transition: all 0.2s;
  border: none;
  outline: none;
}

.btn-primary {
  background: var(--grad-primary);
  color: #fff;
  box-shadow: 0 4px 20px rgba(255,107,71,0.3);
}
.btn-primary:hover { transform: translateY(-1px); box-shadow: 0 6px 24px rgba(255,107,71,0.45); }

.btn-secondary {
  background: var(--surface2);
  color: var(--text);
  border: 1px solid var(--border);
}
.btn-secondary:hover { border-color: rgba(255,255,255,0.15); background: var(--surface); }

.btn-outline {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--border);
}
.btn-outline:hover { border-color: var(--primary); color: var(--primary); }

.btn-lg { padding: 14px 28px; font-size: 15px; border-radius: 12px; }
.btn-xl { padding: 18px 36px; font-size: 16px; border-radius: 14px; }

.btn-download {
  background: var(--grad-accent);
  color: #fff;
  box-shadow: 0 4px 20px rgba(0,212,180,0.3);
}
.btn-download:hover { transform: translateY(-1px); box-shadow: 0 6px 24px rgba(0,212,180,0.45); }

/* ── HAMBURGER ── */
.hamburger { display: none; flex-direction: column; gap: 5px; cursor: pointer; padding: 4px; }
.hamburger span { display: block; width: 24px; height: 2px; background: var(--text); border-radius: 2px; transition: all 0.3s; }

/* ── SECTIONS ── */
section { position: relative; z-index: 1; }
.container { max-width: 1140px; margin: 0 auto; padding: 0 24px; }
.section-pad { padding: 100px 0; }
.section-sm { padding: 60px 0; }

.section-label {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  border-radius: 30px;
  background: rgba(255,107,71,0.1);
  border: 1px solid rgba(255,107,71,0.2);
  color: var(--primary);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.5px;
  text-transform: uppercase;
  margin-bottom: 20px;
}

.section-title {
  font-family: 'Syne', sans-serif;
  font-weight: 800;
  font-size: clamp(28px, 4vw, 44px);
  line-height: 1.15;
  letter-spacing: -1px;
  color: var(--text);
  margin-bottom: 16px;
}

.section-sub {
  color: var(--text2);
  font-size: 16px;
  line-height: 1.7;
  max-width: 560px;
}

.text-center { text-align: center; }
.text-center .section-sub { margin: 0 auto; }

/* ── GRADIENT TEXT ── */
.grad-text {
  background: var(--grad-hero);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ── CARDS ── */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 28px;
  transition: border-color 0.3s, transform 0.3s;
}
.card:hover { border-color: rgba(255,255,255,0.12); transform: translateY(-3px); }

/* ── GRID ── */
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; }

/* ── FOOTER ── */
footer {
  border-top: 1px solid var(--border);
  padding: 60px 0 32px;
  position: relative;
  z-index: 1;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 48px;
}

.footer-brand p {
  color: var(--text2);
  font-size: 14px;
  line-height: 1.7;
  margin-top: 12px;
  max-width: 260px;
}

.footer-col h4 {
  font-family: 'Syne', sans-serif;
  font-weight: 700;
  font-size: 13px;
  color: var(--text);
  margin-bottom: 16px;
  letter-spacing: 0.3px;
}

.footer-col ul { list-style: none; display: flex; flex-direction: column; gap: 10px; }
.footer-col ul a { color: var(--text2); text-decoration: none; font-size: 14px; transition: color 0.2s; }
.footer-col ul a:hover { color: var(--text); }

.footer-bottom {
  padding-top: 24px;
  border-top: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.footer-bottom p { color: var(--text3); font-size: 13px; }

/* ── ANIMATIONS ── */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(24px); }
  to { opacity: 1; transform: translateY(0); }
}
@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}
@keyframes float {
  0%, 100% { transform: translateY(0px); }
  50% { transform: translateY(-12px); }
}
@keyframes pulse-glow {
  0%, 100% { box-shadow: 0 0 20px rgba(255,107,71,0.3); }
  50% { box-shadow: 0 0 40px rgba(255,107,71,0.6); }
}
@keyframes spin { to { transform: rotate(360deg); } }
@keyframes gradient-shift {
  0% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}

.animate-fade-up { animation: fadeUp 0.7s ease forwards; }
.animate-fade-in { animation: fadeIn 0.5s ease forwards; }
.animate-float { animation: float 4s ease-in-out infinite; }

/* ── DIVIDER ── */
.divider { height: 1px; background: var(--border); margin: 0; }

/* ── BADGE ── */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  border-radius: 6px;
  font-size: 11px;
  font-weight: 600;
}
.badge-primary { background: rgba(255,107,71,0.12); color: var(--primary); border: 1px solid rgba(255,107,71,0.2); }
.badge-secondary { background: rgba(124,92,255,0.12); color: var(--secondary); border: 1px solid rgba(124,92,255,0.2); }
.badge-accent { background: rgba(0,212,180,0.12); color: var(--accent); border: 1px solid rgba(0,212,180,0.2); }
.badge-gold { background: rgba(255,181,71,0.12); color: var(--gold); border: 1px solid rgba(255,181,71,0.2); }

/* ── INPUTS ── */
input, textarea, select {
  width: 100%;
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 12px 16px;
  color: var(--text);
  font-family: 'Space Grotesk', sans-serif;
  font-size: 14px;
  outline: none;
  transition: border-color 0.2s;
}
input:focus, textarea:focus, select:focus { border-color: var(--primary); }
input::placeholder, textarea::placeholder { color: var(--text3); }
label { display: block; font-size: 13px; font-weight: 500; color: var(--text2); margin-bottom: 6px; }
.form-group { margin-bottom: 16px; }

/* ── RESPONSIVE ── */
@media (max-width: 900px) {
  .nav-links, .nav-cta { display: none; }
  .hamburger { display: flex; }
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 32px; }
}

@media (max-width: 600px) {
  .footer-grid { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; gap: 12px; text-align: center; }
}

/* ── MOBILE NAV ── */
.mobile-nav {
  display: none;
  position: fixed;
  top: 68px; left: 0; right: 0;
  background: rgba(13,15,20,0.97);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  padding: 20px 5%;
  z-index: 999;
  flex-direction: column;
  gap: 16px;
}
.mobile-nav.open { display: flex; }
.mobile-nav a { color: var(--text2); text-decoration: none; font-size: 15px; font-weight: 500; padding: 8px 0; border-bottom: 1px solid var(--border); }
.mobile-nav a:last-child { border-bottom: none; }

/* ── SCROLLBAR ── */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: var(--surface2); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--text3); }

/* ── GLOW EFFECTS ── */
.glow-primary { box-shadow: 0 0 40px rgba(255,107,71,0.15); }
.glow-secondary { box-shadow: 0 0 40px rgba(124,92,255,0.15); }
.glow-accent { box-shadow: 0 0 40px rgba(0,212,180,0.15); }

/* ── UTILITY ── */
.mt-8 { margin-top: 8px; }
.mt-16 { margin-top: 16px; }
.mt-24 { margin-top: 24px; }
.mt-32 { margin-top: 32px; }
.mt-48 { margin-top: 48px; }
.mb-8 { margin-bottom: 8px; }
.mb-16 { margin-bottom: 16px; }
.mb-24 { margin-bottom: 24px; }
.mb-32 { margin-bottom: 32px; }
.flex { display: flex; }
.flex-center { display: flex; align-items: center; justify-content: center; }
.flex-between { display: flex; align-items: center; justify-content: space-between; }
.gap-8 { gap: 8px; }
.gap-12 { gap: 12px; }
.gap-16 { gap: 16px; }
.gap-24 { gap: 24px; }
.w-full { width: 100%; }