/* Curava — v4 (light theme) */
:root{
  --bg:#ffffff;
  --fg:#0e1116;
  --muted:#667085;
  --card:#ffffff;
  --line:#e5e7eb;
  --brand:#39b8c7;
  --accent:#ff8f86;
  --shadow: 0 6px 20px rgba(0,0,0,0.08), 0 1px 3px rgba(0,0,0,0.08);
}

*{box-sizing:border-box}
html,body{height:100%}
body.light{
  margin:0;
  font-family:'Inter',system-ui,-apple-system,Segoe UI,Roboto,Helvetica,Arial,sans-serif;
  background: radial-gradient(1200px 700px at -10% -20%, rgba(57,184,199,.12), transparent 60%), radial-gradient(1000px 700px at 110% 10%, rgba(255,143,134,.12), transparent 50%), var(--bg);
  color:var(--fg);
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
}

.container{width:min(1100px,90vw);margin:0 auto}

.nav{position:sticky;top:0;backdrop-filter:saturate(140%) blur(8px);background:rgba(255,255,255,.7);border-bottom:1px solid var(--line);z-index:10}
.nav-inner{display:flex;align-items:center;justify-content:space-between;padding:16px 0}
.brand{display:flex;gap:10px;align-items:center;font-weight:700}
.brand img{width:28px;height:28px;display:block;border-radius:6px}
.brand span{letter-spacing:.2px}

.cta{display:inline-flex;align-items:center;justify-content:center;border:1px solid #d1d5db;background:linear-gradient(180deg, #ffffff, #f5f7fb);color:var(--fg);padding:12px 16px;border-radius:12px;font-weight:600;box-shadow:var(--shadow);text-decoration:none;transition:.2s ease}
.cta:hover{transform:translateY(-1px);box-shadow:0 10px 24px rgba(0,0,0,.12)}
.cta.ghost{background:transparent;border-color:#d1d5db}

.hero{padding:84px 0 32px;display:flex;flex-direction:column;align-items:center;text-align:center;gap:20px}
.pill{display:inline-block;font-size:14px;font-weight:600;color:#475569;background:#f1f5f9;border:1px solid var(--line);padding:8px 12px;border-radius:100px;letter-spacing:.3px}
h1{font-size:clamp(36px,8vw,84px);line-height:1.02;margin:0;font-weight:900;letter-spacing:-.02em}
.sub{max-width:780px;margin:0;color:var(--muted);font-size:clamp(16px,2.3vw,20px)}

.waitlist{display:flex;flex-direction:column;gap:12px;width:min(560px,100%);margin-top:8px}
.waitlist input{
  width:100%;padding:16px 18px;border-radius:14px;border:1px solid var(--line);
  background:#ffffff;color:var(--fg);outline:none;font-size:16px;
  box-shadow:inset 0 1px 0 rgba(0,0,0,.02);
}
.waitlist input:focus{border-color:#2f8fa0;box-shadow:0 0 0 6px rgba(57,184,199,.20)}
.waitlist .cta{height:52px;background:linear-gradient(180deg, #30aab9, #248a96);border-color:transparent;color:white}
.waitlist .cta:hover{transform:none;filter:brightness(1.05)}
.form-hint{opacity:.8;font-size:12px;color:#7b8794;margin:0}

.card.demo{
  margin-top:28px;
  background:linear-gradient(180deg,#ffffff,#fafbff);
  border:1px solid var(--line);
  border-radius:18px;
  box-shadow:var(--shadow);
  padding:18px 18px 22px;
  width:min(760px,100%);
}
.demo-inner{display:flex;gap:8px;padding:6px 0 14px;border-bottom:1px solid var(--line)}
.dot{width:10px;height:10px;border-radius:50%;background:#e2e8f0}
.dot:nth-child(1){background:#ff8f86}
.dot:nth-child(2){background:#ffd186}
.dot:nth-child(3){background:#86ffcf}
.demo-text{padding-top:14px;color:#475569}

.features{display:grid;grid-template-columns:repeat(3,1fr);gap:18px;padding:64px 0}
.feature{background:linear-gradient(180deg,#ffffff,#fafbff);border:1px solid var(--line);border-radius:16px;padding:22px;box-shadow:var(--shadow)}
.badge{display:inline-block;font-weight:700;font-size:12px;letter-spacing:.4px;color:white;background:linear-gradient(180deg,#39b8c7,#2aa5b5);padding:6px 10px;border-radius:999px;margin-bottom:8px}
.feature h3{margin:0;color:#0e1116;font-weight:600;line-height:1.35}

.footer{display:flex;align-items:center;justify-content:space-between;padding:32px 0;border-top:1px solid var(--line);color:#6b7280;margin-top:12px}
.footer a{color:#0e1116;text-decoration:none;border-bottom:1px dotted #cbd5e1}
.footer a:hover{opacity:.8}

#toast{position:fixed;left:50%;bottom:24px;transform:translateX(-50%);background:#0c1118;color:#fff;padding:12px 16px;border-radius:12px;box-shadow:0 10px 30px rgba(0,0,0,.2);opacity:0;pointer-events:none;transition:opacity .25s ease}
#toast.show{opacity:1}

.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}

/* Thanks page (light) */
.light-wrap{display:grid;place-items:center;min-height:100vh}
.light-card{
  background:#ffffff;
  border:1px solid var(--line);
  border-radius:20px;
  padding:36px 28px 32px;
  width:min(640px,92vw);
  box-shadow:var(--shadow);
  text-align:center;
}
.icon-wrap{display:flex;align-items:center;justify-content:center;margin-bottom:10px}
.light-card h1{font-size:clamp(32px,7vw,64px);margin:8px 0 8px}
.light-card .sub{margin-bottom:22px}

@media (max-width:900px){
  .features{grid-template-columns:1fr}
  .hero{padding-top:64px}
}