:root {
    --ink: #0f172a;
    --muted: #64748b;
    --line: #e2e8f0;
    --bg: #f4f6f5;
    --card: #fff;

    /* UTM Maroon */
    --brand: #C2001F;
    --brand-d: #970019;
    --brand-l: #FCE7EB;

    --warn: #b45309;
    --warn-l: #fef3c7;
    --bad: #b91c1c;
    --bad-l: #fee2e2;
    --ok: #15803d;
    --ok-l: #dcfce7;

    --r: 12px;
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
    margin: 0;
    background: var(--bg);
    color: var(--ink);
    font: 15px/1.5 system-ui, -apple-system, "Segoe UI",
        Roboto, Helvetica, Arial, sans-serif;
}

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

h1 {
    font-size: 1.5rem;
    margin: 0 0 .75rem;
    letter-spacing: -.01em;
}

h2 { font-size: 1.1rem; margin: 0 0 .75rem; }
h3 { font-size: 1rem; margin: 0 0 .5rem; }
.muted { color: var(--muted); }
small { color: var(--muted); font-size: .8rem; }

.wrap {
    max-width: 1120px;
    margin: 0 auto;
    padding: 1.25rem 1rem 3rem;
}

.wrap.narrow { max-width: 560px; }
.wrap.center { max-width: 440px; padding-top: 8vh; }

.top {
    background: #fff;
    border-bottom: 1px solid var(--line);
    position: sticky;
    top: 0;
    z-index: 20;
}

.top-in {
    max-width: 1120px;
    margin: 0 auto;
    padding: .6rem 1rem;
    display: flex;
    align-items: center;
    gap: 1rem;
    flex-wrap: wrap;
}

.brand {
    font-weight: 700;
    color: var(--brand);
    text-decoration: none;
    font-size: 1.05rem;
}

.nav {
    display: flex;
    gap: .25rem;
    flex-wrap: wrap;
    margin-left: auto;
    align-items: center;
}

.nav a {
    padding: .4rem .75rem;
    border-radius: 8px;
    color: var(--ink);
    text-decoration: none;
    font-size: .92rem;
}

.nav a:hover { background: var(--bg); }

.nav a.on {
    background: var(--brand-l);
    color: var(--brand-d);
    font-weight: 600;
}

.nav a.logout { color: var(--muted); }

.card {
    background: var(--card);
    border: 1px solid var(--line);
    border-radius: var(--r);
    padding: 1.25rem;
    margin-bottom: 1rem;
}

.stack > * + * { margin-top: .9rem; }

.grid { display: grid; gap: 1rem; }

.g2 { grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); }
.g4 { grid-template-columns: repeat(auto-fit, minmax(170px, 1fr)); }

.stat { padding: 1rem 1.25rem; }

.stat b {
    display: block;
    font-size: 1.6rem;
    letter-spacing: -.02em;
}

.stat span { color: var(--muted); font-size: .85rem; }

label { display: block; font-weight: 600; font-size: .88rem; }

label small {
    font-weight: 400;
    display: block;
    margin-top: .2rem;
}

input, select, textarea {
    display: block;
    width: 100%;
    margin-top: .3rem;
    padding: .6rem .75rem;
    border: 1px solid #cbd5e1;
    border-radius: 9px;
    font: inherit;
    background: #fff;
    color: var(--ink);
}

input:focus, select:focus, textarea:focus,
.btn:focus-visible, a:focus-visible {
    outline: 3px solid #E8A0AB;
    outline-offset: 1px;
    border-color: var(--brand);
}

input[type=checkbox] {
    display: inline-block;
    width: auto;
    margin: 0 .4rem 0 0;
}

.check {
    font-weight: 400;
    display: flex;
    align-items: center;
}

.row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: .9rem;
}

.btn {
    display: inline-block;
    border: 0;
    background: var(--brand);
    color: #fff;
    padding: .65rem 1.1rem;
    border-radius: 9px;
    font: inherit;
    font-weight: 600;
    cursor: pointer;
    text-decoration: none;
    text-align: center;
}

.btn:hover { background: var(--brand-d); }
.btn:disabled { opacity: .55; cursor: not-allowed; }

.btn.ghost {
    background: #fff;
    color: var(--ink);
    border: 1px solid #cbd5e1;
}

.btn.ghost:hover { background: var(--bg); }
.btn.danger { background: var(--bad); }
.btn.sm { padding: .35rem .7rem; font-size: .85rem; }
.btn.block { display: block; width: 100%; }

.btnrow { display: flex; gap: .6rem; flex-wrap: wrap; }

.alert {
    padding: .75rem 1rem;
    border-radius: 10px;
    margin-bottom: 1rem;
    font-size: .92rem;
}

.alert-success { background: var(--ok-l); color: #14532d; }
.alert-error { background: var(--bad-l); color: #7f1d1d; }
.alert-info { background: var(--brand-l); color: var(--brand-d); }
.alert-warn { background: var(--warn-l); color: #78350f; }

.table-wrap {
    overflow-x: auto;
    border: 1px solid var(--line);
    border-radius: var(--r);
    background: #fff;
    margin-bottom: 1rem;
}

table {
    width: 100%;
    border-collapse: collapse;
    font-size: .9rem;
}

th, td {
    padding: .65rem .85rem;
    text-align: left;
    border-bottom: 1px solid var(--line);
    white-space: nowrap;
}

th {
    background: #f8fafc;
    font-weight: 600;
    color: #334155;
}

tr:last-child td { border-bottom: 0; }
td.wrapcell { white-space: normal; }

.badge {
    display: inline-block;
    padding: .1rem .55rem;
    border-radius: 99px;
    font-size: .78rem;
    font-weight: 600;
}

.b-ok { background: var(--ok-l); color: var(--ok); }
.b-off { background: #e2e8f0; color: #475569; }
.b-warn { background: var(--warn-l); color: var(--warn); }
.b-bad { background: var(--bad-l); color: var(--bad); }

.bar {
    height: 8px;
    border-radius: 99px;
    background: #e2e8f0;
    overflow: hidden;
}

.bar > i {
    display: block;
    height: 100%;
    background: var(--brand);
}

.bar.full > i { background: #94a3b8; }

.toolbar {
    display: flex;
    gap: .6rem;
    flex-wrap: wrap;
    align-items: flex-end;
    margin-bottom: 1rem;
}

.toolbar label { flex: 1 1 150px; }
.toolbar .btn { flex: 0 0 auto; }

.tabs {
    display: flex;
    gap: .25rem;
    margin-bottom: 1rem;
    border-bottom: 1px solid var(--line);
}

.tabs a {
    padding: .55rem 1rem;
    text-decoration: none;
    color: var(--muted);
    border-bottom: 2px solid transparent;
    margin-bottom: -1px;
}

.tabs a.on {
    color: var(--brand-d);
    border-color: var(--brand);
    font-weight: 600;
}

.pager {
    display: flex;
    gap: .3rem;
    justify-content: center;
    margin: 1rem 0;
}

.pager a {
    padding: .35rem .7rem;
    border: 1px solid var(--line);
    border-radius: 8px;
    text-decoration: none;
    background: #fff;
    color: var(--ink);
}

.pager a.on {
    background: var(--brand);
    color: #fff;
    border-color: var(--brand);
}

details.card > summary { cursor: pointer; font-weight: 600; }
details[open] > summary { margin-bottom: 1rem; }

.pagehead {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
    flex-wrap: wrap;
    margin-bottom: 1rem;
}

.pagehead h1 { margin: 0; }

/* Authentication */
.auth-brand {
    text-align: center;
    font-weight: 800;
    font-size: 1.3rem;
    color: var(--brand);
    margin-bottom: 1rem;
}

.auth .card { padding: 1.75rem; }
.auth form > * + * { margin-top: .9rem; }

.links {
    display: flex;
    justify-content: space-between;
    font-size: .88rem;
    margin-top: 1rem;
}

/* Student */
.bigbtns {
    display: grid;
    gap: 1rem;
    margin-top: 1.25rem;
}

.bigbtn {
    display: block;
    padding: 1.6rem 1.25rem;
    border-radius: 16px;
    text-decoration: none;
    font-size: 1.2rem;
    font-weight: 700;
    border: 2px solid var(--brand);
    color: var(--brand-d);
    background: #fff;
}

.bigbtn.primary {
    background: var(--brand);
    color: #fff;
}

.bigbtn small {
    display: block;
    font-weight: 400;
    opacity: .85;
    margin-top: .15rem;
    color: inherit;
}

.rcard { display: flex; flex-direction: column; gap: .5rem; }
.rcard h3 { margin: 0; }

.count {
    font-size: 1.9rem;
    font-weight: 700;
    letter-spacing: -.02em;
}

.count span {
    font-size: 1rem;
    color: var(--muted);
    font-weight: 500;
}

.rcard.done { opacity: .8; }

/* Scanner */
.scanbox {
    position: relative;
    border-radius: 16px;
    overflow: hidden;
    background: #000;
    aspect-ratio: 3/4;
    max-height: 70vh;
    width: 100%;
}

.scanbox video {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.scanbox:after {
    content: "";
    position: absolute;
    inset: 18%;
    border: 3px solid rgba(255,255,255,.9);
    border-radius: 16px;
    box-shadow: 0 0 0 999px rgba(0,0,0,.35);
}

.modal {
    position: fixed;
    inset: 0;
    background: rgba(15,23,42,.6);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1rem;
    z-index: 50;
}

.modal[hidden] { display: none; }

.modal-box {
    background: #fff;
    border-radius: 16px;
    padding: 1.5rem;
    max-width: 400px;
    width: 100%;
}

.modal-box .btnrow { margin-top: 1.1rem; }
.modal-box .btnrow .btn { flex: 1; }

/* QR print */
.qrsheet { display: grid; gap: 1.5rem; padding: 1rem; }

.qrcard {
    background: #fff;
    border: 2px solid var(--ink);
    border-radius: 16px;
    padding: 2rem;
    text-align: center;
    max-width: 520px;
    margin: 0 auto;
    page-break-inside: avoid;
    break-after: page;
}

.qrcard h1 { font-size: 2rem; margin: .5rem 0; }
.qrcard .qr { display: flex; justify-content: center; margin: 1rem 0; }

@media print {
    .noprint, .top { display: none !important; }
    body { background: #fff; }
    .qrcard { border: 2px solid #000; margin: 0 auto; }
}

@media (max-width: 640px) {
    th, td { padding: .55rem .6rem; }
    .wrap { padding-top: 1rem; }
}

td.btnrow { display: table-cell; }
td.btnrow .btn { margin-right: .3rem; }