:root { color-scheme: dark; --bg:#0b1220; --panel:#131d2f; --panel2:#18253a; --text:#eef4ff; --muted:#9fb0c8; --accent:#5aa7ff; --accent2:#2f7dd1; --danger:#ff7a7a; --border:#2b3c55; }
* { box-sizing:border-box; }
body { margin:0; min-height:100vh; font-family:Inter,Segoe UI,Arial,sans-serif; background:radial-gradient(circle at top,#162743 0,#0b1220 50%); color:var(--text); }
.shell { max-width:980px; margin:0 auto; padding:42px 20px 70px; }
.hidden { display:none !important; }
.card { background:rgba(19,29,47,.96); border:1px solid var(--border); border-radius:18px; padding:24px; box-shadow:0 18px 50px rgba(0,0,0,.25); margin-bottom:20px; }
.login-card { max-width:440px; margin:10vh auto 0; }
h1 { margin:.25rem 0 .5rem; font-size:clamp(1.9rem,4vw,3rem); }
h2 { margin-top:0; }
p { color:var(--muted); line-height:1.55; }
.eyebrow { color:var(--accent); font-weight:800; font-size:.78rem; text-transform:uppercase; letter-spacing:.14em; }
label { display:block; font-weight:700; margin:16px 0 8px; }
input[type=password], input[type=file] { width:100%; border:1px solid var(--border); background:#0d1727; color:var(--text); border-radius:10px; padding:13px; }
button { border:0; border-radius:10px; background:linear-gradient(180deg,var(--accent),var(--accent2)); color:white; padding:13px 18px; font-weight:800; cursor:pointer; }
button:disabled { opacity:.45; cursor:not-allowed; }
form button { width:100%; margin-top:16px; }
button.secondary { background:#223149; border:1px solid #3b4d68; }
.topbar { display:flex; align-items:flex-start; justify-content:space-between; gap:20px; margin-bottom:24px; }
.grid { display:grid; grid-template-columns:1fr 1fr; gap:18px; }
.upload-box { background:var(--panel2); border:1px dashed #456080; border-radius:14px; padding:20px; position:relative; }
.step { display:inline-grid; place-items:center; width:30px; height:30px; border-radius:50%; background:#29476d; color:#fff; font-weight:900; }
small { display:block; color:var(--muted); margin-top:8px; }
.actions { display:flex; align-items:center; gap:18px; }
.status { color:var(--muted); }
.status.success { color:#80e8ad; }
.status.error, .message.error { color:var(--danger); }
.mapping { display:grid; grid-template-columns:1fr 1fr; gap:12px; }
.mapping div { background:#0f192a; border:1px solid var(--border); border-radius:12px; padding:14px; }
.mapping strong, .mapping span { display:block; }
.mapping span { color:var(--muted); margin-top:5px; font-size:.92rem; }
.privacy { margin-bottom:0; font-size:.9rem; }
@media (max-width:700px) { .grid,.mapping { grid-template-columns:1fr; } .topbar,.actions { flex-direction:column; } .actions button { width:100%; } }