:root {
  --green-900: #0c2e23;
  --green-800: #123c2d;
  --green-700: #175040;
  --gold: #c9a227;
  --gold-light: #e3c766;
  --ink: #1d2422;
  --muted: #5c6663;
  --bg: #f6f4ee;
  --card: #ffffff;
  --line: #e3ded2;
  --ok: #1c7c46;
  --ok-bg: #e2f3e9;
  --bad: #b3261e;
  --bad-bg: #fbe7e5;
  --warn: #9a6700;
  --warn-bg: #fdf0d3;
  --info: #175cd3;
  --info-bg: #e6eefc;
  --radius: 12px;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: "Segoe UI", system-ui, -apple-system, Roboto, "Helvetica Neue", Arial, sans-serif;
  line-height: 1.5;
}

.ar { font-family: "Traditional Arabic", "Segoe UI", serif; }

.container { max-width: 1080px; margin: 0 auto; padding: 0 20px; }
.container.wide { max-width: 1280px; }
.container.narrow { max-width: 640px; }

/* header */
.site-header { background: var(--green-900); color: #fff; }
.header-inner { display: flex; align-items: center; justify-content: space-between; padding: 10px 20px; }
.brand { display: flex; align-items: center; gap: 12px; text-decoration: none; color: #fff; }
.brand-logo { height: 44px; width: auto; }
.brand-text { display: flex; flex-direction: column; line-height: 1.1; }
.brand-text strong { color: var(--gold-light); letter-spacing: 0.04em; }
.brand-text small { color: #cfd8d3; font-size: 0.8rem; }
.site-nav { display: flex; align-items: center; gap: 16px; }
.site-nav a { color: #e8efe9; text-decoration: none; }
.site-nav a:hover { color: var(--gold-light); }
.nav-user { color: #cfd8d3; font-size: 0.85rem; }

/* footer */
.site-footer { background: var(--green-900); color: #cfd8d3; margin-top: 48px; padding: 24px 0; text-align: center; }
.footer-logo { height: 56px; margin-bottom: 8px; }
.site-footer p { margin: 0; font-size: 0.85rem; }

/* hero */
.hero { background: linear-gradient(180deg, var(--green-800), var(--green-900)); color: #fff; padding: 48px 0 40px; }
.hero-inner { text-align: center; }
.hero-logo { height: 120px; background: #fff; border-radius: 16px; padding: 10px 18px; }
.hero h1 { margin: 20px 0 8px; font-size: 2rem; color: var(--gold-light); }
.lead { font-size: 1.1rem; color: #e2ebe5; max-width: 720px; margin: 0 auto; }

/* cards */
.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 20px; margin-top: -28px; position: relative; z-index: 1; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 24px; box-shadow: 0 6px 24px rgba(12, 46, 35, 0.08); }
.card h2 { margin-top: 0; font-size: 1.25rem; color: var(--green-800); }
.card-logo { height: 72px; display: block; margin: 0 auto 12px; }
.card.center { text-align: center; }
.note { margin-top: 28px; color: var(--muted); font-size: 0.9rem; }

/* forms & buttons */
.btn { display: inline-block; background: var(--green-700); color: #fff; border: 0; border-radius: 8px; padding: 10px 18px; font-size: 0.95rem; cursor: pointer; text-decoration: none; }
.btn:hover { background: var(--green-800); }
.btn-small { padding: 6px 12px; font-size: 0.85rem; }
.btn-secondary { background: #e8e4d8; color: var(--ink); }
.btn-secondary:hover { background: #dcd6c4; }
.btn-danger { background: var(--bad); }
.btn-danger:hover { background: #8f1d17; }

input, select, textarea {
  font: inherit; padding: 8px 10px; border: 1px solid var(--line); border-radius: 8px; background: #fff; color: var(--ink);
}
input:focus, select:focus { outline: 2px solid var(--gold); outline-offset: 1px; }
label { display: block; font-size: 0.85rem; color: var(--muted); margin-bottom: 10px; }
label input, label select { display: block; width: 100%; margin-top: 4px; color: var(--ink); }
label.inline { display: inline-flex; align-items: center; gap: 6px; color: var(--ink); font-size: 0.9rem; }
label.inline input { width: auto; margin: 0; }
.row { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; }
.code-form { margin-top: 16px; }
.code-row { display: flex; gap: 8px; }
.code-row input { flex: 1; }

/* dashboard */
.page-head { display: flex; align-items: baseline; justify-content: space-between; flex-wrap: wrap; gap: 8px; margin: 24px 0 8px; }
.page-head h1 { margin: 0; color: var(--green-900); }
.tabs { display: flex; gap: 6px; border-bottom: 2px solid var(--line); margin-top: 16px; flex-wrap: wrap; }
.tab { background: none; border: 0; padding: 10px 16px; font-size: 0.95rem; cursor: pointer; color: var(--muted); border-bottom: 2px solid transparent; margin-bottom: -2px; }
.tab.active { color: var(--green-800); border-bottom-color: var(--gold); font-weight: 600; }
.tab-panel { display: none; padding: 20px 0; }
.tab-panel.active { display: block; }
.toolbar { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; margin-bottom: 12px; }

.list { display: flex; flex-direction: column; gap: 8px; }
.list-row { display: flex; justify-content: space-between; align-items: center; gap: 12px; background: var(--card); border: 1px solid var(--line); border-radius: 10px; padding: 12px 16px; flex-wrap: wrap; }
.list-main { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; }

/* tables */
.table-wrap { overflow-x: auto; }
.table { border-collapse: collapse; width: 100%; background: var(--card); border: 1px solid var(--line); border-radius: 10px; overflow: hidden; }
.table th, .table td { padding: 8px 12px; border-bottom: 1px solid var(--line); text-align: left; font-size: 0.9rem; }
.table th { background: #f0ede3; color: var(--green-900); font-weight: 600; }
.table tbody tr:hover { background: #faf8f1; }
.row-flag { background: var(--bad-bg) !important; }

/* grid */
.grid-wrap { overflow-x: auto; }
.table.grid th { min-width: 92px; text-align: center; }
.table.grid td { text-align: center; cursor: pointer; }
.table.grid td.sticky { position: sticky; left: 0; background: var(--card); text-align: left; cursor: default; font-weight: 600; }
.th-sub { font-weight: 400; font-size: 0.7rem; color: var(--muted); }
.st-hadir { background: var(--ok-bg); color: var(--ok); }
.st-absent { background: var(--bad-bg); color: var(--bad); font-weight: 600; }
.st-ziek { background: var(--warn-bg); color: var(--warn); }
.st-exc { background: var(--info-bg); color: var(--info); }
.st-online { background: #efe6fb; color: #6d28d9; }
.st-leeg { color: #b6b0a2; }
.cell-select { width: 100%; font-size: 0.8rem; padding: 4px; }

/* badges & alerts */
.badge { display: inline-block; padding: 2px 10px; border-radius: 999px; font-size: 0.78rem; font-weight: 600; }
.badge-open { background: var(--ok-bg); color: var(--ok); }
.badge-closed { background: #eceae2; color: var(--muted); }
.badge-type { background: #efe6fb; color: #6d28d9; }
.badge-holiday { background: var(--warn-bg); color: var(--warn); }
.badge-flag { background: var(--bad); color: #fff; }
.badge-warn { background: var(--warn-bg); color: var(--warn); }
.badge-ok { background: var(--ok-bg); color: var(--ok); }
.alert { border-radius: 10px; padding: 14px 16px; margin: 12px 0; }
.alert-ok { background: var(--ok-bg); color: var(--ok); }
.alert-error { background: var(--bad-bg); color: var(--bad); }
.alert-info { background: var(--info-bg); color: var(--info); }
.alert-sub { font-size: 0.85rem; margin-top: 4px; opacity: 0.85; }
.muted { color: var(--muted); }
.break-all { word-break: break-all; }

/* session box on student page */
.session-box { border: 1px solid var(--line); border-radius: 10px; padding: 14px; margin: 12px 0; background: #faf8f1; }
.session-klas { font-weight: 700; color: var(--green-800); font-size: 1.05rem; }
.session-datum { text-transform: capitalize; }
.student-btn { display: block; width: 100%; margin: 8px 0; padding: 14px; font-size: 1.05rem; border: 1px solid var(--line); border-radius: 10px; background: #fff; cursor: pointer; text-align: left; }
.student-btn:hover { border-color: var(--gold); background: #fdf9ec; }

/* modals */
.modal { position: fixed; inset: 0; background: rgba(12, 46, 35, 0.55); display: flex; align-items: center; justify-content: center; z-index: 50; padding: 20px; }
.modal.hidden { display: none; }
.modal-box { background: #fff; border-radius: 14px; padding: 24px; max-width: 560px; width: 100%; max-height: 90vh; overflow: auto; box-shadow: 0 12px 40px rgba(0,0,0,0.25); }
.modal-box.center { text-align: center; }
#qr-img { width: 320px; max-width: 100%; image-rendering: pixelated; background: #fff; }
.form { display: block; }

/* toast */
.toast { position: fixed; bottom: 20px; left: 50%; transform: translateX(-50%); background: var(--green-900); color: #fff; padding: 10px 18px; border-radius: 999px; z-index: 99; box-shadow: 0 6px 20px rgba(0,0,0,0.25); }
.toast.hidden { display: none; }
.toast-error { background: var(--bad); }

code { background: #eceae2; padding: 1px 6px; border-radius: 6px; font-size: 0.85em; }

/* login */
.login-card { max-width: 420px; margin: 48px auto; }
.btn-full { width: 100%; margin-top: 8px; }
.form-error { color: var(--bad); font-size: 0.9rem; margin: 8px 0; }
.hidden { display: none !important; }
.qr-code { font-size: 1.6rem; font-weight: 700; letter-spacing: 0.3em; margin: 8px 0; }

@media (max-width: 640px) {
  .hero h1 { font-size: 1.5rem; }
  .hero-logo { height: 88px; }
}