:root{
  --bg:#05030a;
  --ink:#e8e6ff;
  --ink-dim:rgba(232,230,255,0.72);
  --ink-faint:rgba(232,230,255,0.5);
  --cyan:#7fe7ff;
  --violet:#b894ff;
  --magenta:#e36bf0;
  --line:rgba(180,150,255,0.18);
  --glass:rgba(8,4,20,0.55);
  --glass-strong:rgba(8,4,20,0.75);
  --radius:14px;
  --maxw:1180px;
}
*{box-sizing:border-box;margin:0;padding:0}
html,body{min-height:100%}
body{
  font-family:"Inter",system-ui,-apple-system,Segoe UI,Helvetica,Arial,sans-serif;
  font-weight:400;
  line-height:1.55;
  color:var(--ink);
  background:var(--bg);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
  overflow-x:hidden;
  position:relative;
}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}

/* ============ COSMIC BACKGROUND ============ */
.cosmic-bg{
  position:fixed;inset:0;
  background-image:url('/assets/cosmic-bg.png');
  background-size:cover;
  background-position:center;
  background-repeat:no-repeat;
  z-index:-3;
  filter:saturate(1.15) brightness(0.85);
}
.cosmic-vignette{
  position:fixed;inset:0;
  background:
    radial-gradient(ellipse at 50% 0%, rgba(0,0,0,0) 0%, rgba(5,3,10,0.55) 70%, rgba(5,3,10,0.92) 100%),
    linear-gradient(180deg, rgba(5,3,10,0.4) 0%, rgba(5,3,10,0) 25%, rgba(5,3,10,0) 70%, rgba(5,3,10,0.85) 100%);
  z-index:-2;
  pointer-events:none;
}
.cosmic-stars{
  position:fixed;inset:0;z-index:-1;pointer-events:none;
  background-image:
    radial-gradient(1px 1px at 20% 30%, rgba(255,255,255,0.8), transparent),
    radial-gradient(1px 1px at 70% 80%, rgba(180,200,255,0.7), transparent),
    radial-gradient(1px 1px at 40% 60%, rgba(255,255,255,0.6), transparent),
    radial-gradient(2px 2px at 85% 20%, rgba(230,210,255,0.5), transparent),
    radial-gradient(1px 1px at 10% 80%, rgba(127,231,255,0.6), transparent);
  background-size:800px 800px;
  animation:drift 80s linear infinite;
  opacity:0.6;
}
@keyframes drift{
  from{background-position:0 0,0 0,0 0,0 0,0 0}
  to{background-position:800px 800px,-800px 800px,800px -800px,-800px -800px,800px 0}
}

/* ============ NAVBAR ============ */
.navbar{
  position:fixed;top:0;left:0;right:0;z-index:100;
  background:linear-gradient(180deg, rgba(5,3,10,0.7) 0%, rgba(5,3,10,0.45) 100%);
  backdrop-filter:blur(14px) saturate(160%);
  -webkit-backdrop-filter:blur(14px) saturate(160%);
  border-bottom:1px solid var(--line);
  transition:background 0.3s ease, border-color 0.3s ease;
}
.navbar.scrolled{
  background:rgba(5,3,10,0.88);
  border-bottom-color:rgba(180,150,255,0.28);
}
.nav-container{
  max-width:var(--maxw);
  margin:0 auto;
  padding:14px 28px;
  display:flex;align-items:center;justify-content:space-between;
  gap:24px;
}
.nav-brand{
  font-family:"Space Grotesk",sans-serif;
  font-weight:700;
  font-size:1.05rem;
  letter-spacing:0.02em;
  display:flex;align-items:center;gap:9px;
  color:var(--cyan);
  text-shadow:0 0 18px rgba(127,231,255,0.35);
}
.brand-glyph{
  display:inline-block;
  transform:rotate(0deg);
  color:var(--cyan);
  filter:drop-shadow(0 0 6px rgba(127,231,255,0.6));
  animation:spin-slow 14s linear infinite;
}
@keyframes spin-slow{to{transform:rotate(360deg)}}
.nav-links{display:flex;align-items:center;gap:6px}
.nav-link{
  padding:8px 16px;
  font-size:0.92rem;
  font-weight:500;
  color:var(--ink-dim);
  border-radius:8px;
  transition:color 0.2s, background 0.2s;
  position:relative;
}
.nav-link:hover{color:var(--ink);background:rgba(180,150,255,0.08)}
.nav-link.active{color:var(--ink)}
.nav-link.active::after{
  content:"";position:absolute;left:16px;right:16px;bottom:2px;height:1px;
  background:linear-gradient(90deg,var(--cyan),var(--violet));
  border-radius:1px;
}

/* ============ HERO ============ */
.hero{
  min-height:100vh;
  display:flex;align-items:center;justify-content:center;
  padding:140px 28px 100px;
  position:relative;
}
.hero-inner{
  max-width:880px;text-align:center;
  display:flex;flex-direction:column;align-items:center;gap:28px;
  animation:fade-up 0.9s ease-out;
}
@keyframes fade-up{
  from{opacity:0;transform:translateY(20px)}
  to{opacity:1;transform:translateY(0)}
}
.hero-badge{
  display:inline-flex;align-items:center;gap:10px;
  padding:8px 16px;
  background:rgba(8,4,20,0.55);
  border:1px solid var(--line);
  border-radius:999px;
  font-size:0.82rem;
  font-weight:500;
  color:var(--ink-dim);
  letter-spacing:0.02em;
  backdrop-filter:blur(8px);
}
.badge-dot{
  width:6px;height:6px;border-radius:50%;
  background:var(--cyan);
  box-shadow:0 0 10px var(--cyan), 0 0 20px rgba(127,231,255,0.6);
  animation:pulse 2s ease-in-out infinite;
}
@keyframes pulse{50%{opacity:0.5;transform:scale(0.85)}}
.hero-title{
  font-family:"Space Grotesk",sans-serif;
  font-weight:700;
  font-size:clamp(2.4rem, 6vw, 4.5rem);
  line-height:1.06;
  letter-spacing:-0.02em;
}
.title-line{display:block}
.gradient-text{
  background:linear-gradient(90deg,var(--cyan) 0%,var(--violet) 50%,var(--magenta) 100%);
  -webkit-background-clip:text;background-clip:text;
  -webkit-text-fill-color:transparent;color:transparent;
}
.hero-tagline{
  max-width:620px;
  font-size:clamp(1rem, 1.3vw, 1.15rem);
  color:var(--ink-dim);
  line-height:1.65;
}
.hero-actions{display:flex;flex-wrap:wrap;gap:14px;justify-content:center}

/* ============ BUTTONS ============ */
.btn{
  display:inline-flex;align-items:center;gap:10px;
  padding:13px 24px;
  border-radius:999px;
  font-family:"Inter",sans-serif;
  font-size:0.94rem;
  font-weight:600;
  letter-spacing:0.01em;
  cursor:pointer;
  transition:transform 0.2s, box-shadow 0.25s, background 0.25s;
  border:1px solid transparent;
  position:relative;
  white-space:nowrap;
}
.btn-primary{
  background:linear-gradient(135deg, var(--cyan) 0%, var(--violet) 60%, var(--magenta) 100%);
  color:#0a0218;
  box-shadow:0 0 0 0 rgba(127,231,255,0), 0 12px 32px -10px rgba(184,148,255,0.5);
}
.btn-primary:hover{
  transform:translateY(-1px);
  box-shadow:0 0 0 5px rgba(127,231,255,0.15), 0 16px 40px -10px rgba(184,148,255,0.7);
}
.btn-ghost{
  background:rgba(8,4,20,0.45);
  border-color:var(--line);
  color:var(--ink);
  backdrop-filter:blur(8px);
}
.btn-ghost:hover{
  background:rgba(180,150,255,0.1);
  border-color:rgba(180,150,255,0.4);
}
.btn-arrow{transition:transform 0.25s}
.btn:hover .btn-arrow{transform:translateX(3px)}

/* ============ SECTIONS ============ */
.section{
  padding:110px 28px;
  position:relative;
}
.section-alt{
  background:linear-gradient(180deg, rgba(5,3,10,0) 0%, rgba(5,3,10,0.5) 50%, rgba(5,3,10,0) 100%);
}
.section-inner{
  max-width:var(--maxw);margin:0 auto;
}
.section-inner.narrow{
  max-width:680px;text-align:center;
  display:flex;flex-direction:column;align-items:center;gap:22px;
}
.section-eyebrow{
  display:inline-block;
  font-family:"Space Grotesk",sans-serif;
  font-size:0.78rem;font-weight:600;
  letter-spacing:0.22em;text-transform:uppercase;
  color:var(--cyan);
  margin-bottom:14px;
  padding:5px 12px;
  background:rgba(127,231,255,0.08);
  border:1px solid rgba(127,231,255,0.18);
  border-radius:6px;
}
.section-title{
  font-family:"Space Grotesk",sans-serif;
  font-weight:700;
  font-size:clamp(1.8rem, 3.6vw, 2.8rem);
  line-height:1.12;letter-spacing:-0.02em;
  margin-bottom:18px;
}
.section-lead{
  font-size:1.05rem;color:var(--ink-dim);max-width:540px;
}

/* ============ FEATURE GRID ============ */
.feature-grid{
  display:grid;
  grid-template-columns:repeat(auto-fit, minmax(260px,1fr));
  gap:18px;
  margin-top:40px;
}
.feature{
  padding:28px 26px;
  background:rgba(8,4,20,0.5);
  border:1px solid var(--line);
  border-radius:var(--radius);
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
  transition:transform 0.25s, border-color 0.25s, background 0.25s;
}
.feature:hover{
  transform:translateY(-3px);
  border-color:rgba(180,150,255,0.45);
  background:rgba(15,8,32,0.65);
}
.feature-icon{
  font-size:1.6rem;margin-bottom:14px;
  filter:drop-shadow(0 0 8px rgba(127,231,255,0.4));
}
.feature h3{
  font-family:"Space Grotesk",sans-serif;
  font-size:1.1rem;font-weight:600;letter-spacing:-0.01em;
  margin-bottom:8px;
}
.feature p{
  font-size:0.93rem;color:var(--ink-dim);line-height:1.6;
}

/* ============ FOOTER ============ */
.footer{
  padding:30px 28px;
  border-top:1px solid var(--line);
  background:rgba(5,3,10,0.7);
  backdrop-filter:blur(12px);
  position:relative;z-index:10;
}
.footer-inner{
  max-width:var(--maxw);margin:0 auto;
  display:flex;align-items:center;justify-content:space-between;
  gap:16px;flex-wrap:wrap;
}
.footer-mark{
  font-family:"Space Grotesk",sans-serif;
  font-weight:600;font-size:0.92rem;
  color:var(--cyan);
  letter-spacing:0.02em;
}
.footer-copy{
  font-size:0.85rem;
  color:var(--ink-faint);
}

/* ============ RESPONSIVE ============ */
@media (max-width: 640px){
  .nav-container{padding:12px 20px}
  .nav-links{gap:2px}
  .nav-link{padding:7px 11px;font-size:0.86rem}
  .hero{padding:110px 20px 70px}
  .section{padding:80px 20px}
  .footer-inner{flex-direction:column;text-align:center;gap:10px}
}