/* Tampilan siswa & halaman sederhana. Mobile-first, tanpa library, tanpa font tambahan. */
:root{--bg:#f1f5f8;--kartu:#fff;--teks:#1e293b;--redup:#64748b;--garis:#e2e8f0;--utama:#1c3faa;--utama2:#3160d8;--ok:#15803d;--warn:#b45309;--gagal:#b91c1c}
*{box-sizing:border-box}
html{background:var(--utama)}
body{margin:0;background:var(--bg);color:var(--teks);font:16px/1.55 system-ui,-apple-system,"Segoe UI",Roboto,Arial,sans-serif;-webkit-font-smoothing:antialiased;min-height:100vh}
.atas{background:linear-gradient(135deg,var(--utama),var(--utama2));color:#fff;padding:14px 16px}
.atas a{color:#fff;text-decoration:none;display:inline-flex;align-items:center;gap:10px;font-weight:600}
.atas img{width:28px;height:28px;border-radius:8px}
.bungkus{max-width:760px;margin:0 auto;padding:12px 14px 40px}
h1{font-size:1.4rem;margin:.2em 0 .1em;font-weight:600}
h2{font-size:1.1rem;margin:1.4em 0 .5em;font-weight:600}
p{margin:.5em 0}
a{color:var(--utama)}
.redup,.bantu{color:var(--redup);font-size:.9rem}
.bantu{font-size:.85rem;margin:3px 0 0}
.kartu{background:var(--kartu);border-radius:14px;padding:18px;margin:14px 0;box-shadow:0 4px 18px rgba(28,63,170,.08)}
.tombol{display:inline-block;background:var(--utama);color:#fff;border:0;border-radius:10px;padding:12px 20px;font:inherit;font-weight:600;text-decoration:none;cursor:pointer;min-height:44px}
.tombol:active{transform:scale(.98)}
.tombol.abu{background:var(--redup)}
.tombol.kecil{padding:6px 12px;font-size:.85rem;min-height:0}
label{display:block;font-weight:600;margin:14px 0 4px}
input[type=text],input[type=password],select,textarea{width:100%;padding:12px;border:1px solid var(--garis);border-radius:10px;background:#fff;color:var(--teks);font:inherit}
input:focus,select:focus,textarea:focus,.tombol:focus-visible{outline:2px solid var(--utama2);outline-offset:1px}
.galat{background:#fee2e2;color:#7f1d1d;border-radius:10px;padding:10px 14px;margin:12px 0}
.galat ul{margin:.3em 0 0;padding-left:1.2em}
.pesan{background:#dcfce7;color:#14532d;border-radius:10px;padding:10px 14px;margin:12px 0}
.lencana{display:inline-block;min-width:54px;text-align:center;border-radius:6px;padding:1px 8px;font-size:.78rem;font-weight:700;color:#fff;background:var(--redup)}
.lencana.ok{background:var(--ok)}.lencana.warn{background:var(--warn)}.lencana.gagal{background:var(--gagal)}
pre{white-space:pre-wrap;word-break:break-word;font:12px/1.4 ui-monospace,Menlo,Consolas,monospace;background:var(--bg);border-radius:8px;padding:8px;margin:0}
.baris{display:flex;gap:8px;flex-wrap:wrap;align-items:center}
.foot{text-align:center;color:var(--redup);font-size:.8rem;margin-top:28px}
@media (prefers-reduced-motion:no-preference){.kartu{animation:naik .3s ease-out both}@keyframes naik{from{opacity:0;transform:translateY(10px)}}}