/* ===== incampus — Apple-style design system ===== */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
button{font:inherit;border:0;background:none;cursor:pointer;color:inherit}

:root{
  --bg:#f7f8fb; --fg:#15171c; --muted:#6b7280; --card:#ffffff;
  --border:rgba(20,22,30,.08); --primary:#3469ff; --primary-2:#22b8d9;
  --grad-text:linear-gradient(135deg,#3a5cff,#22b8d9 50%,#a05bff);
  --grad-cta:linear-gradient(135deg,#3a5cff,#5394ff 60%,#22b8d9);
  --glass-bg:rgba(255,255,255,.55); --glass-bd:rgba(255,255,255,.65);
  --shadow-soft:0 10px 30px -12px rgba(20,30,80,.18);
  --shadow-elev:0 30px 80px -30px rgba(20,30,80,.35);
  --shadow-glow:0 0 60px rgba(80,120,255,.35);
  --ease:cubic-bezier(.22,1,.36,1);
}
html[data-theme="dark"]{
  --bg:#0b0d12; --fg:#f4f5f8; --muted:#9aa3b2; --card:#13161d;
  --border:rgba(255,255,255,.08); --primary:#7ea6ff; --primary-2:#7adfee;
  --glass-bg:rgba(20,24,34,.5); --glass-bd:rgba(255,255,255,.1);
  --shadow-soft:0 10px 30px -12px rgba(0,0,0,.5);
  --shadow-elev:0 30px 80px -30px rgba(0,0,0,.7);
  --shadow-glow:0 0 80px rgba(120,160,255,.45);
}
body{
  font-family:-apple-system,BlinkMacSystemFont,"SF Pro Display","Inter",system-ui,sans-serif;
  background:var(--bg);color:var(--fg);
  -webkit-font-smoothing:antialiased;letter-spacing:-.011em;
  min-height:100vh;overflow-x:hidden;
}
.container{max-width:1100px;margin:0 auto;padding:0 24px}
.muted{color:var(--muted)}

/* Glass */
.glass{
  background:var(--glass-bg);
  -webkit-backdrop-filter:blur(28px) saturate(180%);
  backdrop-filter:blur(28px) saturate(180%);
  border:1px solid var(--glass-bd);
  box-shadow:var(--shadow-soft);
}
.glass-strong{
  background:var(--glass-bg);
  -webkit-backdrop-filter:blur(40px) saturate(200%);
  backdrop-filter:blur(40px) saturate(200%);
  border:1px solid var(--glass-bd);
  box-shadow:var(--shadow-elev);
}

/* Gradient text */
.text-gradient{
  background:var(--grad-text);-webkit-background-clip:text;background-clip:text;color:transparent;
}

/* Buttons / links */
.btn{display:inline-flex;align-items:center;gap:.5rem;padding:.85rem 1.5rem;border-radius:999px;font-size:14px;font-weight:500;transition:all .25s var(--ease)}
.btn:hover{transform:scale(1.03)}
.btn-primary{background:var(--grad-cta);color:#fff;box-shadow:var(--shadow-soft)}
.btn-primary:hover{box-shadow:var(--shadow-glow)}
.btn-light{background:var(--bg);color:var(--fg);box-shadow:var(--shadow-soft)}
.btn-glass{background:var(--glass-bg);color:#fff;border:1px solid var(--glass-bd);backdrop-filter:blur(20px)}
.link-quiet{font-size:14px;color:var(--muted);padding:.5rem 1rem}
.link-quiet:hover{color:var(--fg)}
.chev-link{display:inline-flex;align-items:center;gap:.25rem;color:var(--primary);font-size:15px;transition:opacity .2s}
.chev-link span{font-size:1.15em;line-height:1;transition:transform .2s var(--ease)}
.chev-link:hover{opacity:.8}
.chev-link:hover span{transform:translateX(2px)}

/* Navbar */
.nav-wrap{position:fixed;inset:0 0 auto 0;z-index:50;padding:1rem 16px;transition:padding .4s var(--ease)}
.nav-wrap.scrolled{padding:.5rem 16px}
.nav{display:flex;align-items:center;justify-content:space-between;max-width:1100px;margin:0 auto;border-radius:999px;padding:.6rem 1.25rem}
.brand{display:flex;align-items:center;gap:.5rem;font-weight:600;letter-spacing:-.02em}
.nav-links{display:none;gap:1.75rem}
.nav-links a{font-size:14px;color:var(--muted);transition:color .2s}
.nav-links a:hover{color:var(--fg)}
.nav-actions{display:flex;align-items:center;gap:.5rem}
.icon-btn{display:grid;place-items:center;width:36px;height:36px;border-radius:999px;border:1px solid var(--border);background:rgba(127,127,127,.08);transition:all .25s}
.icon-btn:hover{transform:scale(1.05)}
.icon-btn svg{width:16px;height:16px}
html[data-theme="dark"] .icon-sun{display:block}
html[data-theme="dark"] .icon-moon{display:none}
html:not([data-theme="dark"]) .icon-sun{display:none}
html:not([data-theme="dark"]) .icon-moon{display:block}
@media(min-width:768px){.nav-links{display:flex}}
@media(max-width:640px){.link-quiet,.nav-actions .btn{display:none}}

/* Hero */
.hero{position:relative;padding:9rem 0 6rem;overflow:hidden;isolation:isolate}
@media(min-width:640px){.hero{padding:11rem 0 8rem}}
.hero-bg{position:absolute;inset:0;z-index:-2;
  background:
    radial-gradient(70% 50% at 50% 0%,rgba(80,120,255,.18),transparent 70%),
    radial-gradient(60% 50% at 80% 30%,rgba(34,184,217,.12),transparent 70%),
    radial-gradient(60% 50% at 20% 40%,rgba(160,90,255,.10),transparent 70%);
}
.orb{position:absolute;border-radius:999px;filter:blur(80px);opacity:.55;z-index:-1;pointer-events:none}
.orb-1{left:10%;top:10rem;width:18rem;height:18rem;background:radial-gradient(circle,rgba(80,120,255,.6),transparent 70%);animation:float 10s ease-in-out infinite}
.orb-2{right:8%;top:18rem;width:20rem;height:20rem;background:radial-gradient(circle,rgba(34,184,217,.5),transparent 70%);animation:float 10s ease-in-out -3s infinite}
.hero-inner{text-align:center}
.eyebrow{font-size:13px;font-weight:500;color:var(--primary);letter-spacing:-.01em}
.display{font-size:clamp(2.75rem,8.5vw,6.5rem);font-weight:600;letter-spacing:-.04em;line-height:1;margin-top:.75rem}
.lead{margin:1.5rem auto 0;max-width:42rem;font-size:clamp(1.05rem,1.6vw,1.25rem);color:var(--muted);line-height:1.4}
.hero-links{display:flex;flex-wrap:wrap;justify-content:center;gap:.5rem 1.75rem;margin-top:1.75rem}
.hero-card{position:relative;margin:4rem auto 0;max-width:880px}
.halo{position:absolute;inset:5% 5%;z-index:-1;filter:blur(60px);opacity:.7;
  background:radial-gradient(50% 50% at 50% 50%,rgba(80,120,255,.45),transparent 70%)}
.showcase{padding:8px;border-radius:36px;overflow:hidden}
.showcase img{border-radius:28px;width:100%}
.pill{position:absolute;display:none;align-items:center;gap:.6rem;padding:.6rem .85rem;border-radius:18px;animation:float 8s ease-in-out infinite}
.pill-left{left:1rem;top:2.5rem}
.pill-right{right:1rem;bottom:3rem;animation-delay:-1.5s}
.pill-icon{display:grid;place-items:center;width:32px;height:32px;border-radius:12px;background:rgba(80,120,255,.12);color:var(--primary)}
.pill-icon svg{width:16px;height:16px}
.pill-tag{font-size:10px;text-transform:uppercase;letter-spacing:.15em;color:var(--muted)}
.pill-title{font-size:12px;font-weight:500;letter-spacing:-.01em}
@media(min-width:640px){.pill{display:flex}}
.trust{display:flex;flex-wrap:wrap;justify-content:center;gap:.5rem 2rem;margin-top:4rem;font-size:11px;letter-spacing:.2em;text-transform:uppercase;color:var(--muted)}
.trust .dot{opacity:.4}

/* Sections */
.section{padding:8rem 0;position:relative}
.section-head{max-width:48rem;margin:0 auto;text-align:center}
.kicker{font-size:13px;font-weight:500;text-transform:uppercase;letter-spacing:.2em;color:var(--muted)}
.h2{margin-top:1rem;font-size:clamp(2rem,5vw,3.5rem);font-weight:600;letter-spacing:-.03em;line-height:1.05}
.section .lead{margin-top:1.5rem}

/* Grids */
.grid{display:grid;gap:1.25rem;margin-top:5rem}
.grid-2{grid-template-columns:1fr}
.grid-3{grid-template-columns:1fr}
.grid-4{grid-template-columns:1fr}
@media(min-width:640px){.grid-3,.grid-4{grid-template-columns:repeat(2,1fr)}}
@media(min-width:960px){.grid-2{grid-template-columns:repeat(2,1fr)}.grid-3{grid-template-columns:repeat(3,1fr)}.grid-4{grid-template-columns:repeat(4,1fr)}}

/* Course card */
.course-card{background:var(--card);border-radius:28px;overflow:hidden;box-shadow:var(--shadow-soft);transition:all .5s var(--ease)}
.course-card:hover{box-shadow:var(--shadow-elev)}
.course-img{position:relative;height:18rem;overflow:hidden}
.course-img img{width:100%;height:100%;object-fit:cover;transition:transform .7s var(--ease)}
.course-card:hover .course-img img{transform:scale(1.05)}
.course-img::after{content:"";position:absolute;inset:0;background:linear-gradient(to top,var(--card),transparent 60%)}
.tag{position:absolute;top:1rem;left:1rem;padding:.3rem .75rem;border-radius:999px;font-size:11px;font-weight:500;z-index:1}
.course-body{padding:2rem}
.course-body h3{font-size:1.5rem;font-weight:600;letter-spacing:-.02em}
.course-body p{margin-top:1rem;color:var(--muted)}
.course-body ul{margin-top:1.25rem;list-style:none;display:grid;grid-template-columns:1fr 1fr;gap:.5rem;font-size:14px;color:var(--muted)}
.course-body li::before{content:"";display:inline-block;width:6px;height:6px;border-radius:999px;background:var(--primary);margin-right:.6rem;vertical-align:middle}
.course-body .chev-link{margin-top:1.75rem}

/* Features */
.feature{padding:1.75rem;border-radius:24px;transition:all .5s var(--ease)}
.feature:hover{transform:translateY(-4px);box-shadow:var(--shadow-elev)}
.f-icon{display:grid;place-items:center;width:40px;height:40px;border-radius:14px;border:1px solid var(--border);background:rgba(127,127,127,.06);color:var(--fg);transition:all .3s}
.f-icon svg{width:18px;height:18px}
.feature:hover .f-icon{border-color:rgba(80,120,255,.4);color:var(--primary)}
.feature h4{margin-top:1.25rem;font-size:17px;font-weight:600;letter-spacing:-.01em}
.feature p{margin-top:.5rem;font-size:14px;color:var(--muted);line-height:1.5}

/* Steps */
.step{padding:1.75rem;border:1px solid var(--border);border-radius:24px;background:rgba(127,127,127,.04);transition:all .5s var(--ease)}
.step:hover{transform:translateY(-4px);box-shadow:var(--shadow-elev)}
.step-n{font-size:3rem;font-weight:600;letter-spacing:-.03em}
.step h4{margin-top:1rem;font-size:17px;font-weight:600}
.step p{margin-top:.5rem;font-size:14px;color:var(--muted);line-height:1.5}

/* CTA */
.cta-card{position:relative;overflow:hidden;border-radius:40px;padding:3rem 1.5rem;text-align:center;background:var(--grad-cta);color:#fff;box-shadow:var(--shadow-elev)}
@media(min-width:640px){.cta-card{padding:5rem 3rem}}
.cta-card h2{font-size:clamp(2rem,5vw,3.5rem);font-weight:600;letter-spacing:-.03em;line-height:1.05}
.cta-card p{margin:1.5rem auto 0;max-width:36rem;font-size:1.1rem;opacity:.88}
.cta-actions{display:flex;flex-wrap:wrap;justify-content:center;gap:.75rem;margin-top:2.5rem}

/* Footer */
.footer{border-top:1px solid var(--border);padding:2.5rem 0}
.foot{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:1rem;font-size:14px;color:var(--muted)}
.foot .brand{font-weight:500}

/* Reveal */
.reveal{opacity:0;transform:translateY(28px);transition:opacity .9s var(--ease),transform .9s var(--ease)}
.reveal.in{opacity:1;transform:none}

@keyframes float{0%,100%{transform:translateY(0) translateX(0)}50%{transform:translateY(-20px) translateX(10px)}}

/* ===== Forms ===== */
.form-page{padding:8rem 0 6rem;min-height:100vh}
.form-wrap{max-width:560px;margin:0 auto;padding:0 24px}
.back{display:inline-flex;align-items:center;gap:.4rem;font-size:14px;color:var(--muted);margin-bottom:2rem}
.back:hover{color:var(--fg)}
.form-card{padding:2.5rem;border-radius:28px}
@media(min-width:640px){.form-card{padding:3rem}}
.form-title{font-size:clamp(1.75rem,4vw,2.25rem);font-weight:600;letter-spacing:-.025em;text-align:center}
.form-sub{margin-top:.75rem;text-align:center;color:var(--muted);font-size:14px}
.form{margin-top:2rem;display:grid;gap:1rem}
.field label{display:block;font-size:12px;font-weight:500;color:var(--muted);margin-bottom:.4rem}
.field input,.field textarea,.field select{
  width:100%;height:44px;padding:0 .9rem;border-radius:14px;border:1px solid var(--border);
  background:rgba(127,127,127,.06);color:var(--fg);font-size:14px;outline:none;transition:all .25s;
  font-family:inherit;
}
.field textarea{height:auto;min-height:120px;padding:.7rem .9rem;resize:vertical}
.field input:focus,.field textarea:focus,.field select:focus{border-color:var(--primary);background:var(--card)}
.field-hp{position:absolute;left:-9999px;width:1px;height:1px;overflow:hidden}
.alert{display:flex;gap:.6rem;padding:.85rem 1rem;border-radius:14px;font-size:14px}
.alert-error{background:rgba(220,60,70,.1);color:#dc3c46;border:1px solid rgba(220,60,70,.3)}
.alert-success{background:rgba(40,170,120,.1);color:#1a8a5e;border:1px solid rgba(40,170,120,.3)}
.btn-submit{height:44px;border-radius:14px;background:var(--grad-cta);color:#fff;font-weight:500;font-size:14px;transition:all .25s}
.btn-submit:hover{transform:scale(1.01);box-shadow:var(--shadow-glow)}
.btn-submit:disabled{opacity:.6;cursor:not-allowed;transform:none}
.form-foot{display:flex;justify-content:space-between;margin-top:1.25rem;font-size:12px;color:var(--muted)}
.form-foot a:hover{color:var(--fg)}

/* Login extras */
.input-with-icon{position:relative}
.input-with-icon svg{position:absolute;left:.85rem;top:50%;transform:translateY(-50%);width:16px;height:16px;color:var(--muted)}
.input-with-icon input{padding-left:2.5rem}