:root {
    --color-bg: #f5f6f8;
    --color-surface: #ffffff;
    --color-border: #d8dce1;
    --color-text: #1f2430;
    --color-muted: #6b7280;
    --color-primary: #2952a3;
    --color-primary-dark: #1f3d7a;
    --color-danger: #b3261e;
    --color-success: #1e7a34;
    font-size: 15px;
}

* { box-sizing: border-box; }

body {
    margin: 0;
    font-family: -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background: var(--color-bg);
    color: var(--color-text);
}

.topbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 12px;
    background: var(--color-primary);
    color: #fff;
    padding: 12px 20px;
}
.topbar-brand { font-weight: 600; }
.topbar-brand .muted { font-weight: 400; opacity: .8; margin-left: 6px; }
.topbar-nav { display: flex; gap: 16px; flex-wrap: wrap; }
.topbar-nav a { color: #fff; text-decoration: none; opacity: .9; }
.topbar-nav a:hover { opacity: 1; text-decoration: underline; }
.topbar-user { display: flex; align-items: center; gap: 12px; font-size: .9rem; }
.topbar-user a { color: #fff; }

.container { max-width: 1100px; margin: 0 auto; padding: 20px; }

.card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: 8px;
    padding: 20px;
    margin-bottom: 20px;
}

h1, h2, h3 { margin-top: 0; }

table {
    border-collapse: collapse;
    width: 100%;
    background: var(--color-surface);
}
th, td {
    border: 1px solid var(--color-border);
    padding: 8px 10px;
    text-align: left;
    vertical-align: middle;
}
th { background: #eef1f6; }
.table-wrap { overflow-x: auto; }

.btn {
    display: inline-block;
    padding: 8px 14px;
    border-radius: 6px;
    border: 1px solid var(--color-primary);
    background: var(--color-primary);
    color: #fff;
    text-decoration: none;
    font-size: .9rem;
    cursor: pointer;
}
.btn:hover { background: var(--color-primary-dark); }
.btn-secondary { background: #fff; color: var(--color-primary); }
.btn-danger { background: var(--color-danger); border-color: var(--color-danger); }
.btn-sm { padding: 4px 10px; font-size: .8rem; }

.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form-grid.single { grid-template-columns: 1fr; }
.field { display: flex; flex-direction: column; gap: 4px; margin-bottom: 12px; }
.field label { font-weight: 600; font-size: .85rem; }
input, select, textarea {
    padding: 8px 10px;
    border: 1px solid var(--color-border);
    border-radius: 6px;
    font-size: .95rem;
    font-family: inherit;
}
textarea { resize: vertical; }

.alert { padding: 10px 14px; border-radius: 6px; margin-bottom: 16px; }
.alert-success { background: #e6f4ea; color: var(--color-success); border: 1px solid #b7dfc3; }
.alert-error { background: #fbe9e7; color: var(--color-danger); border: 1px solid #f2c1bc; }

.muted { color: var(--color-muted); }
.text-right { text-align: right; }
.actions-row { display: flex; gap: 8px; margin-bottom: 16px; flex-wrap: wrap; align-items: center; }

.foto-preview {
    width: 100px;
    height: 130px;
    object-fit: cover;
    border: 1px solid var(--color-border);
    background: #fafafa;
}

.badge {
    display: inline-block;
    padding: 2px 8px;
    border-radius: 999px;
    font-size: .75rem;
    background: #eef1f6;
    color: var(--color-muted);
}

.nilai-input { width: 70px; text-align: center; }
.nilai-huruf-input { width: 60px; text-align: center; }
.nilai-cell.locked input { background: #f2f2f2; color: #999; }
.save-status { font-size: .75rem; color: var(--color-muted); margin-left: 6px; }

/* ---------- Cetak (Buku Induk fisik) ---------- */
.cetak-page {
    background: #fff;
    padding: 24px;
    margin-bottom: 24px;
}
.cetak-title { text-align: center; font-weight: 700; font-size: 1.1rem; margin-bottom: 20px; }
.cetak-biodata { display: flex; gap: 24px; margin-bottom: 28px; }
.cetak-page h3 { margin-top: 28px; margin-bottom: 12px; }
.cetak-foto {
    width: 3cm; height: 4cm;
    border: 1px solid #333;
    display: flex; align-items: center; justify-content: center;
    font-size: .7rem; text-align: center; color: #888;
    flex-shrink: 0;
    object-fit: cover;
}
.cetak-biodata-fields { flex: 1; }
.cetak-biodata-fields table { border: none; }
.cetak-biodata-fields td { border: none; padding: 3px 4px; }
.cetak-grades-page .table-wrap { overflow: visible; }
.cetak-grades-page table { font-size: .8rem; table-layout: fixed; width: 100%; }
.cetak-grades-page th, .cetak-grades-page td { padding: 4px 6px; text-align: center; overflow-wrap: break-word; }

@page {
    size: portrait;
    margin: 12mm;
}

@media print {
    /* Halaman Daftar Nilai dirotasi 90 derajat supaya isinya tetap selebar landscape
       (satu halaman penuh, tanpa mengecilkan tulisan) walau ukuran kertas tetap potrait.
       .cetak-grades-page tetap mengikuti alur halaman normal (page-break tetap berlaku),
       sedangkan .cetak-rotate di dalamnya yang diputar & diposisikan absolut. */
    .cetak-grades-page {
        position: relative;
        width: 186mm;
        height: 273mm;
        overflow: hidden;
    }
    .cetak-rotate {
        position: absolute;
        top: 0;
        left: 0;
        width: 250mm;
        height: 186mm;
        transform-origin: top left;
        transform: rotate(90deg) translateY(-100%);
    }
}

@media print {
    .no-print { display: none !important; }
    body { background: #fff; }
    .container { max-width: none; padding: 0; }
    .cetak-page { page-break-after: always; }
    .cetak-page:last-child { page-break-after: avoid; }
}