:root {
    --warna-utama: #1e4d8b;
    --warna-utama-gelap: #163a68;
    --warna-aksen: #2e9e6b;
    --warna-bahaya: #c0392b;
    --warna-bg: #f4f6f9;
    --warna-teks: #263238;
    --warna-border: #dde3ea;
}
* { box-sizing: border-box; }
body {
    margin: 0;
    font-family: 'Segoe UI', Roboto, Arial, sans-serif;
    background: var(--warna-bg);
    color: var(--warna-teks);
}

/* ---------- Login ---------- */
.halaman-login {
    display: flex; align-items: center; justify-content: center;
    min-height: 100vh; background: linear-gradient(135deg, var(--warna-utama), var(--warna-utama-gelap));
}
.kartu-login {
    background: #fff; padding: 40px; border-radius: 12px; width: 380px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.2); text-align: center;
}
.kartu-login h1 { font-size: 1.3em; margin-bottom: 4px; color: var(--warna-utama-gelap); }
.subjudul { color: #667; margin-bottom: 20px; font-size: 0.9em; }
.kartu-login label { display: block; text-align: left; margin: 12px 0 4px; font-size: 0.9em; font-weight: 600; }
.kartu-login input {
    width: 100%; padding: 10px; border: 1px solid var(--warna-border); border-radius: 6px; font-size: 1em;
}
.kartu-login button {
    width: 100%; margin-top: 20px; padding: 12px; background: var(--warna-utama); color: #fff;
    border: none; border-radius: 6px; font-size: 1em; cursor: pointer; font-weight: 600;
}
.kartu-login button:hover { background: var(--warna-utama-gelap); }
.pesan-error {
    background: #fdecea; color: var(--warna-bahaya); padding: 10px; border-radius: 6px; margin-bottom: 10px; font-size: 0.9em;
}
.pesan-sukses {
    background: #e8f6ee; color: var(--warna-aksen); padding: 10px; border-radius: 6px; margin-bottom: 10px; font-size: 0.9em;
}

/* ---------- Layout Admin ---------- */
.tata-letak { display: flex; min-height: 100vh; }
.sidebar {
    width: 220px; background: var(--warna-utama-gelap); color: #fff;
    display: flex; flex-direction: column; padding: 20px 0; flex-shrink: 0;
}
.logo-sidebar { padding: 0 20px 20px; font-weight: 700; font-size: 1.1em; border-bottom: 1px solid rgba(255,255,255,0.15); }
.logo-sidebar small { font-weight: 400; opacity: 0.7; }
.sidebar nav { display: flex; flex-direction: column; margin-top: 10px; flex-grow: 1; }
.sidebar nav a {
    color: #dce6f2; text-decoration: none; padding: 12px 20px; font-size: 0.95em;
}
.sidebar nav a:hover { background: rgba(255,255,255,0.08); }
.info-user-sidebar { padding: 15px 20px; font-size: 0.85em; border-top: 1px solid rgba(255,255,255,0.15); }
.tautan-keluar { display: block; margin-top: 8px; color: #ffb3ab; text-decoration: none; }

.konten-utama { flex-grow: 1; padding: 30px 40px; }
.konten-utama h2 { color: var(--warna-utama-gelap); margin-top: 0; }

.baris-judul-halaman { display: flex; justify-content: space-between; align-items: center; margin-bottom: 20px; }

/* ---------- Statistik ---------- */
.grid-kartu-statistik { display: flex; gap: 20px; margin-bottom: 30px; }
.kartu-statistik {
    background: #fff; padding: 20px; border-radius: 10px; flex: 1; text-align: center;
    box-shadow: 0 2px 8px rgba(0,0,0,0.06);
}
.kartu-statistik .angka { display: block; font-size: 2em; font-weight: 700; color: var(--warna-utama); }
.kartu-statistik .label { color: #667; font-size: 0.9em; }

/* ---------- Tabel ---------- */
.tabel-data { width: 100%; border-collapse: collapse; background: #fff; border-radius: 10px; overflow: hidden; box-shadow: 0 2px 8px rgba(0,0,0,0.05); }
.tabel-data th, .tabel-data td { padding: 12px 15px; text-align: left; border-bottom: 1px solid var(--warna-border); font-size: 0.92em; }
.tabel-data th { background: #eef2f7; color: #445; font-weight: 600; }
.tabel-data tr:last-child td { border-bottom: none; }
.sel-pertanyaan { max-width: 350px; }

/* ---------- Badge ---------- */
.badge { padding: 3px 10px; border-radius: 20px; font-size: 0.78em; font-weight: 600; }
.badge-aktif, .badge-selesai, .badge-berjalan { background: #e8f6ee; color: var(--warna-aksen); }
.badge-nonaktif, .badge-belum_mulai, .badge-draft { background: #eee; color: #778; }
.badge-sedang_ujian { background: #fff4e0; color: #b8720a; }
.badge-kategori { background: #e6edf7; color: var(--warna-utama); }
.badge-bahaya { background: #fdecea; color: var(--warna-bahaya); }

/* ---------- Form ---------- */
.form-soal { background: #fff; padding: 25px; border-radius: 10px; max-width: 700px; box-shadow: 0 2px 8px rgba(0,0,0,0.05); }
.form-soal label { display: block; font-weight: 600; margin: 14px 0 5px; font-size: 0.9em; }
.form-soal input, .form-soal select, .form-soal textarea {
    width: 100%; padding: 9px; border: 1px solid var(--warna-border); border-radius: 6px; font-size: 0.95em;
}
.label-checkbox { display: flex; align-items: center; gap: 8px; font-weight: 400; }
.label-checkbox input { width: auto; }
.grid-2-kolom { display: grid; grid-template-columns: 1fr 1fr; gap: 15px; }
.info-file-saat-ini { font-size: 0.85em; color: #667; margin-top: 5px; }
.baris-tombol-form { margin-top: 20px; display: flex; gap: 10px; }

/* ---------- Tombol ---------- */
.tombol { display: inline-block; padding: 10px 18px; border-radius: 6px; text-decoration: none; font-size: 0.9em; font-weight: 600; cursor: pointer; border: none; }
.tombol-utama { background: var(--warna-utama); color: #fff; }
.tombol-utama:hover { background: var(--warna-utama-gelap); }
.tombol-sekunder { background: #eef2f7; color: var(--warna-teks); }
.tombol-sekunder:hover { background: #dde5ee; }
.tombol-bahaya { background: #fdecea; color: var(--warna-bahaya); }

.filter-bar { display: flex; align-items: center; gap: 10px; margin-bottom: 20px; }
.filter-bar select, .filter-bar input[type=text] { padding: 8px; border-radius: 6px; border: 1px solid var(--warna-border); }
.info-jumlah { color: #667; font-size: 0.9em; }

/* ---------- Halaman Ujian (Peserta) ---------- */
.halaman-ujian { background: #f0f2f5; }
.bar-atas-ujian {
    position: sticky; top: 0; background: var(--warna-utama-gelap); color: #fff;
    padding: 14px 30px; display: flex; justify-content: space-between; align-items: center; z-index: 10;
}
.timer-ujian { font-size: 1.4em; font-weight: 700; font-variant-numeric: tabular-nums; }
.timer-ujian.waktu-kritis { color: #ffb3ab; }
.area-soal { max-width: 800px; margin: 30px auto; padding: 0 20px 60px; }
.blok-kategori-soal { margin-bottom: 10px; }
.judul-kategori-soal {
    background: var(--warna-utama); color: #fff; padding: 10px 18px; border-radius: 8px 8px 0 0;
    font-weight: 700; margin-top: 25px;
}
.kartu-soal { background: #fff; padding: 20px; margin-bottom: 12px; border-radius: 8px; box-shadow: 0 2px 6px rgba(0,0,0,0.05); }
.nomor-soal { font-weight: 700; color: var(--warna-utama); margin-bottom: 8px; }
.teks-pertanyaan { margin-bottom: 15px; line-height: 1.5; }
.lampiran-soal img { max-width: 100%; border-radius: 6px; margin-bottom: 15px; border: 1px solid var(--warna-border); }
.pilihan-jawaban { display: block; padding: 10px 14px; border: 1px solid var(--warna-border); border-radius: 6px; margin-bottom: 8px; cursor: pointer; }
.pilihan-jawaban:hover { background: #f7f9fc; }
.pilihan-jawaban.terpilih { border-color: var(--warna-utama); background: #eaf1fb; }
.pilihan-jawaban input { margin-right: 10px; }
.tombol-selesai-ujian {
    display: block; width: 100%; margin-top: 30px; padding: 15px; background: var(--warna-aksen);
    color: #fff; border: none; border-radius: 8px; font-size: 1.1em; font-weight: 700; cursor: pointer;
}