/* =====================================================================
   SmartExam - Design System
   Terinspirasi dari LJK (Lembar Jawaban Komputer): kertas ujian abu-
   kebiruan, tinta pensil 2B, dan tinta merah koreksi guru. Elemen
   tanda tangan: pilihan jawaban berbentuk bulatan yang terisi penuh
   saat dipilih -- evolusi digital dari cara mengisi LJK.
   ===================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@500;600;700&family=IBM+Plex+Sans:wght@400;500;600;700&family=IBM+Plex+Mono:wght@500;600&display=swap');

:root {
    --ink: #101828;
    --ink-soft: #3A3F4B;
    --paper: #EDF1F6;
    --paper-card: #FFFFFF;
    --pensil: #2451C4;
    --pensil-dark: #1B3A96;
    --pensil-bg: #EAF0FE;
    --lulus: #1F7A4D;
    --lulus-bg: #E4F3EA;
    --tinta-merah: #B23A2E;
    --tinta-merah-bg: #FBEAE7;
    --kuning: #A5690A;
    --kuning-bg: #FBF1DC;
    --graphite: #6B7280;
    --border: #DCE2EA;
    --radius: 12px;
    --radius-sm: 8px;
    --shadow: 0 2px 14px rgba(16, 24, 40, 0.07);
    --font-display: 'Space Grotesk', 'Segoe UI', sans-serif;
    --font-body: 'IBM Plex Sans', 'Segoe UI', sans-serif;
    --font-mono: 'IBM Plex Mono', 'Consolas', monospace;
}

* { box-sizing: border-box; }

body {
    font-family: var(--font-body);
    background: var(--paper);
    color: var(--ink);
    margin: 0;
    -webkit-font-smoothing: antialiased;
}

h1, h2, h3 { font-family: var(--font-display); color: var(--ink); margin: 0; }

a { color: var(--pensil); }

/* --- Layout --- */
.wrap { max-width: 900px; margin: 0 auto; padding: 0 20px; }
.wrap-sempit { max-width: 640px; margin: 0 auto; padding: 0 20px; }
.wrap-lebar { max-width: 1000px; margin: 0 auto; padding: 0 20px; }

/* --- Topbar --- */
.topbar {
    background: var(--ink);
    color: #fff;
    padding: 16px 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.topbar.topbar-siswa { background: var(--pensil-dark); }
.topbar strong { font-family: var(--font-display); font-size: 16px; font-weight: 700; letter-spacing: 0.2px; }
.topbar a { color: #C9D6F5; text-decoration: none; font-size: 13px; font-weight: 500; }
.topbar a:hover { color: #fff; }
.topbar .siswa-nama { margin-right: 14px; font-size: 13px; opacity: 0.85; }

/* --- Halaman auth (login) : latar kertas berpola garis tipis --- */
.auth-bg {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 24px;
    background-color: var(--paper);
    background-image:
        linear-gradient(rgba(16,24,40,0.045) 1px, transparent 1px),
        linear-gradient(90deg, rgba(16,24,40,0.045) 1px, transparent 1px);
    background-size: 28px 28px;
}
.auth-card {
    background: var(--paper-card);
    padding: 36px 32px;
    border-radius: var(--radius);
    box-shadow: 0 8px 32px rgba(16,24,40,0.12);
    width: 100%;
    max-width: 380px;
    border-top: 4px solid var(--pensil);
}
.auth-card.auth-admin { border-top-color: var(--ink); }
.auth-card h1 { font-size: 22px; margin-bottom: 4px; }
.auth-card p.sub { color: var(--graphite); font-size: 13.5px; margin: 0 0 26px; line-height: 1.5; }

/* --- Card generik --- */
.card {
    background: var(--paper-card);
    border-radius: var(--radius);
    padding: 24px;
    box-shadow: var(--shadow);
    margin-bottom: 20px;
}
.card h2 { font-size: 16px; margin-bottom: 6px; }
.card .desc { color: var(--graphite); font-size: 13px; margin: 0 0 18px; line-height: 1.5; }

/* --- Form fields --- */
label { display: block; font-size: 12.5px; font-weight: 600; color: var(--ink-soft); margin-bottom: 6px; }
input[type="text"], input[type="password"], input[type="number"], select {
    width: 100%;
    padding: 11px 14px;
    border: 1.5px solid var(--border);
    border-radius: var(--radius-sm);
    font-size: 14.5px;
    font-family: var(--font-body);
    background: #fff;
    color: var(--ink);
}
input:focus, select:focus {
    outline: none;
    border-color: var(--pensil);
    box-shadow: 0 0 0 3px var(--pensil-bg);
}
input[type="file"] { font-family: var(--font-body); font-size: 13.5px; margin-bottom: 4px; }

/* --- Buttons --- */
.btn, button {
    display: inline-block;
    padding: 11px 20px;
    background: var(--pensil);
    color: #fff;
    border: none;
    border-radius: var(--radius-sm);
    font-family: var(--font-body);
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    text-decoration: none;
    transition: background 0.15s;
}
.btn:hover, button:hover { background: var(--pensil-dark); }
.btn:focus-visible, button:focus-visible { outline: 2px solid var(--ink); outline-offset: 2px; }
.btn-block { width: 100%; text-align: center; }
.btn-success { background: var(--lulus); }
.btn-success:hover { background: #175c3a; }
.btn-danger { background: var(--tinta-merah); }
.btn-danger:hover { background: #8f2f25; }
.btn-secondary { background: #E7EAF0; color: var(--ink-soft); }
.btn-secondary:hover { background: #D9DEE7; }
.btn-dark { background: var(--ink); }
.btn-dark:hover { background: #000; }

/* --- Alerts / notifikasi --- */
.notif { padding: 13px 16px; border-radius: var(--radius-sm); font-size: 13.5px; margin-bottom: 16px; border: 1px solid transparent; line-height: 1.5; }
.notif-ok { background: var(--lulus-bg); border-color: #bfe3cd; color: var(--lulus); }
.notif-warn { background: var(--kuning-bg); border-color: #f1dfae; color: var(--kuning); }
.notif-err { background: var(--tinta-merah-bg); border-color: #f0c9c2; color: var(--tinta-merah); }
.notif ul { margin: 8px 0 0; padding-left: 18px; max-height: 200px; overflow-y: auto; }
.notif ul li { margin-bottom: 3px; }

/* --- Badge status --- */
.badge { display: inline-block; padding: 3px 10px; border-radius: 6px; font-size: 11.5px; font-weight: 600; }
.badge-lulus { background: var(--lulus-bg); color: var(--lulus); }
.badge-proses { background: var(--kuning-bg); color: var(--kuning); }
.badge-netral { background: #EEF0F3; color: var(--graphite); }
.badge-merah { background: var(--tinta-merah-bg); color: var(--tinta-merah); }

/* --- Tabel --- */
table { width: 100%; border-collapse: collapse; font-size: 13.5px; }
th, td { text-align: left; padding: 10px 8px; border-bottom: 1px solid #EEF0F3; }
th { color: var(--graphite); font-size: 11px; text-transform: uppercase; letter-spacing: 0.4px; font-weight: 600; }

/* --- Kotak ringkasan angka (rekap/ketuntasan/analisis) --- */
.ringkasan { display: flex; gap: 14px; margin-bottom: 18px; flex-wrap: wrap; }
.ringkasan .kotak { background: var(--paper); border-radius: var(--radius-sm); padding: 14px 20px; text-align: center; min-width: 110px; }
.ringkasan .kotak .angka { font-family: var(--font-mono); font-size: 22px; font-weight: 600; color: var(--ink); }
.ringkasan .kotak .label { font-size: 11px; color: var(--graphite); margin-top: 2px; }

/* --- Angka mono (NISN, skor, dsb) --- */
.mono { font-family: var(--font-mono); }

/* =====================================================================
   SIGNATURE: Bubble-fill jawaban ala LJK
   PG & BS -> bulatan (pilih satu). PGK -> kotak membulat (pilih lebih
   dari satu). Bentuk beda supaya cara interaksi langsung kebaca tanpa
   perlu instruksi tambahan.
   ===================================================================== */
.bubble-option {
    position: relative;
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 13px 16px;
    border: 1.5px solid var(--border);
    border-radius: var(--radius-sm);
    margin-bottom: 9px;
    cursor: pointer;
    background: #fff;
    transition: border-color 0.15s, background 0.15s;
    font-size: 14.5px;
}
.bubble-option:hover { border-color: var(--pensil); background: var(--pensil-bg); }
.bubble-option input {
    position: absolute;
    opacity: 0;
    width: 1px; height: 1px;
}
.bubble-mark {
    flex-shrink: 0;
    width: 24px;
    height: 24px;
    border: 2.5px solid var(--ink-soft);
    border-radius: 50%;
    position: relative;
    transition: border-color 0.15s;
}
/* PGK: kotak membulat, bukan lingkaran, supaya beda dari PG/BS */
.tipe-pgk .bubble-mark { border-radius: 7px; }

.bubble-option input:checked ~ .bubble-mark { border-color: var(--pensil); }
.bubble-option input:checked ~ .bubble-mark::after {
    content: '';
    position: absolute;
    inset: 4px;
    background: var(--pensil);
    border-radius: inherit;
}
.bubble-option input:focus-visible ~ .bubble-mark {
    outline: 2px solid var(--pensil);
    outline-offset: 3px;
}
.bubble-option.terpilih { border-color: var(--pensil); background: var(--pensil-bg); }

/* --- Timer instrumen ujian --- */
.timer {
    font-family: var(--font-mono);
    background: rgba(255,255,255,0.12);
    padding: 7px 16px;
    border-radius: 8px;
    font-weight: 600;
    font-size: 16px;
    letter-spacing: 0.5px;
}
.timer.kritis { background: var(--tinta-merah); }

/* --- Kartu soal ujian --- */
.soal-card { background: var(--paper-card); border-radius: var(--radius); padding: 20px 22px; margin-bottom: 16px; box-shadow: var(--shadow); }
.no-soal { font-family: var(--font-mono); font-size: 11.5px; color: var(--pensil); font-weight: 600; letter-spacing: 0.5px; margin-bottom: 8px; }
.pertanyaan { font-size: 15.5px; line-height: 1.6; margin-bottom: 14px; color: var(--ink); }
.pertanyaan img { max-width: 100%; border-radius: 8px; margin-top: 10px; }
.bacaan-box {
    background: #FBF8EE;
    border: 1px solid #EADFB4;
    border-left: 4px solid #C9A227;
    border-radius: var(--radius-sm);
    padding: 16px 18px;
    margin-bottom: 14px;
    font-size: 14px;
    line-height: 1.65;
    color: var(--ink-soft);
}
.status-simpan { font-size: 11px; color: var(--lulus); margin-top: 6px; height: 14px; font-weight: 600; }

/* --- Menu grid dashboard admin --- */
.menu-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(230px, 1fr)); gap: 16px; }
.menu-item {
    background: var(--paper-card);
    border-radius: var(--radius);
    padding: 22px;
    box-shadow: var(--shadow);
    text-decoration: none;
    color: var(--ink);
    display: block;
    border: 1px solid transparent;
    transition: box-shadow 0.18s, transform 0.18s, border-color 0.18s;
}
.menu-item:hover { border-color: var(--border); box-shadow: 0 10px 28px rgba(16,24,40,0.12); transform: translateY(-3px); }
.menu-item.disabled { opacity: 0.45; cursor: default; pointer-events: none; }
.menu-item h3 { font-size: 15px; margin-bottom: 5px; font-family: var(--font-body); font-weight: 700; }
.menu-item p { margin: 0; font-size: 13px; color: var(--graphite); line-height: 1.4; }
.badge-soon { display: inline-block; background: #EEF0F3; color: var(--graphite); font-size: 10.5px; padding: 2px 8px; border-radius: 6px; margin-top: 8px; font-weight: 600; }

.menu-icon-badge {
    width: 44px; height: 44px; border-radius: 12px;
    display: flex; align-items: center; justify-content: center;
    font-size: 20px; margin-bottom: 14px;
}
.menu-icon-badge.warna-biru { background: var(--pensil-bg); color: var(--pensil-dark); }
.menu-icon-badge.warna-hijau { background: var(--lulus-bg); color: var(--lulus); }
.menu-icon-badge.warna-kuning { background: var(--kuning-bg); color: var(--kuning); }

.menu-section-title {
    font-family: var(--font-display); font-size: 13px; font-weight: 700; text-transform: uppercase;
    letter-spacing: 0.6px; color: var(--graphite); margin: 30px 0 14px;
}
.menu-section-title:first-of-type { margin-top: 6px; }

/* --- Stats bar dashboard admin --- */
.stats-bar { display: flex; gap: 14px; flex-wrap: wrap; margin-bottom: 8px; }
.stat-pill {
    background: var(--paper-card); border-radius: var(--radius); padding: 16px 22px; box-shadow: var(--shadow);
    flex: 1; min-width: 150px;
}
.stat-pill .angka { font-family: var(--font-mono); font-size: 26px; font-weight: 600; color: var(--ink); line-height: 1.1; }
.stat-pill .label { font-size: 12px; color: var(--graphite); margin-top: 4px; }
.stat-pill.aksen-biru { border-bottom: 3px solid var(--pensil); }
.stat-pill.aksen-hijau { border-bottom: 3px solid var(--lulus); }

/* --- Dashboard siswa: daftar ujian --- */
.item-ujian {
    background: var(--paper-card); border-radius: var(--radius); padding: 18px 20px; margin-bottom: 14px;
    box-shadow: var(--shadow); display: flex; justify-content: space-between; align-items: center; gap: 12px;
}
.item-ujian h3 { font-size: 15px; margin-bottom: 4px; }
.item-ujian p { margin: 0; font-size: 13px; color: var(--graphite); }
.item-ujian p b { color: var(--ink); font-family: var(--font-mono); }

/* --- Layout sidebar admin --- */
.admin-layout { display: flex; min-height: 100vh; }
.admin-sidebar {
    width: 240px; flex-shrink: 0; background: var(--ink); color: #fff;
    display: flex; flex-direction: column; position: sticky; top: 0; height: 100vh; overflow-y: auto;
}
.admin-sidebar .brand {
    padding: 22px 20px 18px; font-family: var(--font-display); font-weight: 700; font-size: 16px;
    border-bottom: 1px solid rgba(255,255,255,0.1); margin-bottom: 10px; letter-spacing: 0.2px;
}
.admin-nav { display: flex; flex-direction: column; padding: 6px 0; flex: 1; }
.admin-nav a {
    display: flex; align-items: center; gap: 12px; padding: 11px 20px; color: #A9B4CC;
    text-decoration: none; font-size: 13.5px; font-weight: 500; border-left: 3px solid transparent;
    transition: background 0.15s, color 0.15s;
}
.admin-nav a svg { width: 18px; height: 18px; flex-shrink: 0; stroke-width: 2; }
.admin-nav a:hover { background: rgba(255,255,255,0.06); color: #fff; }
.admin-nav a.active { background: rgba(255,255,255,0.09); color: #fff; border-left-color: var(--pensil); font-weight: 600; }
.admin-sidebar .sidebar-footer { padding: 14px 20px 20px; border-top: 1px solid rgba(255,255,255,0.1); }
.admin-sidebar .sidebar-footer a { color: #F2B8B0; text-decoration: none; font-size: 13px; font-weight: 600; display: flex; align-items: center; gap: 8px; }
.admin-sidebar .sidebar-footer a svg { width: 16px; height: 16px; }
.admin-main { flex: 1; padding: 32px 36px; min-width: 0; }

@media (max-width: 820px) {
    .admin-layout { flex-direction: column; }
    .admin-sidebar { width: 100%; height: auto; position: static; flex-direction: row; overflow-x: auto; }
    .admin-sidebar .brand { border-bottom: none; border-right: 1px solid rgba(255,255,255,0.1); padding: 16px 18px; white-space: nowrap; }
    .admin-nav { flex-direction: row; }
    .admin-nav a { border-left: none; border-bottom: 3px solid transparent; white-space: nowrap; }
    .admin-nav a.active { border-left-color: transparent; border-bottom-color: var(--pensil); }
    .sidebar-footer { display: flex; align-items: center; border-top: none; border-left: 1px solid rgba(255,255,255,0.1); }
    .admin-main { padding: 22px 18px; }
}
.kosong { color: var(--graphite); font-size: 14px; text-align: center; padding: 40px 0; }
.filter-row { display: flex; gap: 12px; align-items: end; flex-wrap: wrap; }
.filter-row > div { min-width: 0; }

@media (max-width: 640px) {
    .menu-grid { grid-template-columns: 1fr; }
    .item-ujian { flex-direction: column; align-items: stretch; text-align: left; }
}