:root{--bg:#0b1220;--card:#121a2b;--fg:#e8eefc;--muted:#98a2b3;--accent:#6ea8ff;--ring:#2a3b6b}
*{box-sizing:border-box}
html,body{margin:0;padding:0;font-family:Inter,system-ui,Segoe UI,Roboto,Helvetica,Arial,sans-serif;background:#0b1220;color:#e8eefc}
a{color:#9ec5ff;text-decoration:none}
a:hover{text-decoration:underline}
.container{max-width:1100px;margin:0 auto;padding:24px}

nav{display:flex;gap:16px;flex-wrap:wrap}
header.hero{padding:56px 0;text-align:center}
.hero h1{font-size:2.25rem;margin:0 0 12px}
.hero p{color:var(--muted);max-width:760px;margin:0 auto}

.grid{display:grid;gap:16px;grid-template-columns:repeat(auto-fit,minmax(260px,1fr))}
.card{background:var(--card);border:1px solid #1b2742;border-radius:16px;padding:18px;box-shadow:0 1px 0 #1b2742}
.card h3{margin:6px 0 8px;font-size:1.15rem}

footer{border-top:1px solid #1b2742;margin-top:40px}
footer .cols{display:grid;gap:16px;grid-template-columns:repeat(auto-fit,minmax(220px,1fr))}

.btn{background:linear-gradient(135deg,#3a6ff8,#6ea8ff);color:#fff;border:0;padding:10px 14px;border-radius:12px;cursor:pointer;font-weight:600}
.btn:disabled{opacity:.6;cursor:not-allowed}
.input{background:#0e1627;border:1px solid #233154;border-radius:12px;padding:10px;color:#e8eefc;width:100%}
.progress{display:flex;align-items:center;gap:10px;margin-top:10px}
small.muted{color:var(--muted)}

/* Landing overrides (index.html only) */
body.landing{background:#ffffff;color:#171717}
body.landing a{color:#4338ca}
body.landing .muted{color:#6b7280}
body.landing .top-links{display:flex;gap:18px;justify-content:center;padding:10px 0;font-size:.82rem}
body.landing header.hero-landing{padding:96px 0 32px;background:linear-gradient(180deg,#0c001a 0%, #5b00ff 25%, #7c3aed 48%, rgba(255,255,255,0) 82%);color:#ffffff}
body.landing header.hero-landing h1{font-size:3rem;margin:12px 0 8px}
body.landing header.hero-landing p{color:#eef2ff;max-width:none}

/* Upload drop area */
.dropzone{max-width:980px;margin:22px auto 0;border:3px dashed #e9d5ff;border-radius:14px;background:#f5f3ff;padding:28px;text-align:center;box-shadow:0 0 0 8px rgba(255,255,255,.6)}
.dropzone .sub{font-size:.8rem;color:#6b7280;margin-top:8px}
.btn-primary{background:#fb7a3c;color:#fff;border:0;border-radius:10px;padding:12px 22px;font-weight:700}
.btn-primary:hover{filter:brightness(.98)}

/* Light cards on landing */
body.landing .cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:18px;margin-top:24px}
body.landing .card.light{background:#fff;border:1px solid #eee;color:#1f2937;box-shadow:0 1px 0 rgba(16,24,40,.04);border-radius:16px}
body.landing .card.light h3{margin-top:0}
body.landing .card.light p{color:#475569}
body.landing .card.light .icon{width:42px;height:42px;display:inline-flex;align-items:center;justify-content:center;border-radius:12px;background:#ede9fe;color:#7c3aed;font-size:20px;margin-bottom:8px}

/* How it works */
.how{padding:26px 0}
.how h2{font-size:1.8rem;text-align:center;margin:36px 0}
.steps{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:20px;max-width:900px;margin:0 auto}
.step{text-align:center}
.step .dot{width:64px;height:64px;border-radius:999px;background:rgba(79,70,229,.08);margin:0 auto 10px}
.step h4{margin:4px 0 6px}
.step p{color:#6b7280;margin:0}

/* FAQ */
.faq{max-width:980px;margin:10px auto 60px}
.faq-item{border:1px solid #eee;border-radius:12px;background:#fff;margin:12px 0}
.faq-q{display:flex;justify-content:space-between;align-items:center;padding:16px 18px;font-weight:600;cursor:pointer}
.faq-a{display:none;padding:0 18px 16px;color:#475569}
.faq-item.open .faq-a{display:block}
.faq-item.open .faq-q{border-bottom:1px solid #f1f5f9}