/* ---------- fonts ---------- */
@font-face { font-family: 'Plex Arabic'; font-style: normal; font-weight: 400; font-display: swap; src: url(/fonts/plex-arabic-400.woff2) format('woff2'); unicode-range: U+0600-06FF, U+0750-077F, U+0870-088E, U+0890-0891, U+0897-08E1, U+08E3-08FF, U+200C-200E, U+2010-2011, U+204F, U+2E41, U+FB50-FDFF, U+FE70-FE74, U+FE76-FEFC; }
@font-face { font-family: 'Plex Arabic'; font-style: normal; font-weight: 500; font-display: swap; src: url(/fonts/plex-arabic-500.woff2) format('woff2'); unicode-range: U+0600-06FF, U+0750-077F, U+0870-088E, U+0890-0891, U+0897-08E1, U+08E3-08FF, U+200C-200E, U+2010-2011, U+204F, U+2E41, U+FB50-FDFF, U+FE70-FE74, U+FE76-FEFC; }
@font-face { font-family: 'Plex Arabic'; font-style: normal; font-weight: 600; font-display: swap; src: url(/fonts/plex-arabic-600.woff2) format('woff2'); unicode-range: U+0600-06FF, U+0750-077F, U+0870-088E, U+0890-0891, U+0897-08E1, U+08E3-08FF, U+200C-200E, U+2010-2011, U+204F, U+2E41, U+FB50-FDFF, U+FE70-FE74, U+FE76-FEFC; }
@font-face { font-family: 'Plex Arabic'; font-style: normal; font-weight: 700; font-display: swap; src: url(/fonts/plex-arabic-700.woff2) format('woff2'); unicode-range: U+0600-06FF, U+0750-077F, U+0870-088E, U+0890-0891, U+0897-08E1, U+08E3-08FF, U+200C-200E, U+2010-2011, U+204F, U+2E41, U+FB50-FDFF, U+FE70-FE74, U+FE76-FEFC; }
@font-face { font-family: 'Plex Arabic'; font-style: normal; font-weight: 400; font-display: swap; src: url(/fonts/plex-latin-400.woff2) format('woff2'); unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD; }
@font-face { font-family: 'Plex Arabic'; font-style: normal; font-weight: 500; font-display: swap; src: url(/fonts/plex-latin-500.woff2) format('woff2'); unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD; }
@font-face { font-family: 'Plex Arabic'; font-style: normal; font-weight: 600; font-display: swap; src: url(/fonts/plex-latin-600.woff2) format('woff2'); unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD; }
@font-face { font-family: 'Plex Arabic'; font-style: normal; font-weight: 700; font-display: swap; src: url(/fonts/plex-latin-700.woff2) format('woff2'); unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD; }
@font-face { font-family: 'Ruqaa'; font-style: normal; font-weight: 700; font-display: swap; src: url(/fonts/ruqaa-arabic-700.woff2) format('woff2'); unicode-range: U+0600-06FF, U+0750-077F, U+FB50-FDFF, U+FE70-FE74, U+FE76-FEFC, U+200C-200E; }
@font-face { font-family: 'Ruqaa'; font-style: normal; font-weight: 700; font-display: swap; src: url(/fonts/ruqaa-latin-700.woff2) format('woff2'); unicode-range: U+0000-00FF, U+2000-206F; }

/* ---------- tokens ---------- */
:root {
  /* "Answer sheet" identity: graph paper, ballpoint ink, pencil graphite, highlighter, teacher's pens */
  --bg: #ffffff;
  --paper: #f3f5f8;
  --grid: #e6eaf0;
  --bg-soft: #f6f8fb;
  --bg-muted: #edf0f5;
  --border: #dbe1ea;
  --border-strong: #c2cbd8;
  --text: #1b1f28;
  --text-2: #2f3644;
  --text-3: #525b6c;
  --text-4: #747d8e;
  --graphite: #262a35;
  --primary: #2441b0;
  --primary-hover: #1a3290;
  --primary-soft: #eef2fd;
  --primary-soft-2: #d5defa;
  --primary-ring: rgba(36, 65, 176, .2);
  --bubble: #8e9cce;
  --marker: #ffd23f;
  --marker-deep: #e2b100;
  --marker-soft: #fff6d1;
  --marker-ink: #6f5300;
  --success: #17824b;
  --success-soft: #eef8f2;
  --success-border: #b7e0c7;
  --danger: #d22f3b;
  --danger-soft: #fdf0f1;
  --danger-border: #f4c0c5;
  --warning: #a86500;
  --warning-soft: #fff6df;
  --warning-border: #f3d58c;
  --radius: 14px;
  --radius-sm: 10px;
  --shadow: 0 1px 0 rgba(27, 31, 40, .04), 0 1px 2px rgba(27, 31, 40, .05);
  --shadow-lg: 0 24px 60px -16px rgba(20, 28, 58, .32);
  --font: 'Plex Arabic', 'Segoe UI', Tahoma, system-ui, sans-serif;
  --hand: 'Ruqaa', 'Plex Arabic', serif;
  color-scheme: light;
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  font-size: 15px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
button, input, select, textarea { font: inherit; color: inherit; }
button { cursor: pointer; }
img { max-width: 100%; display: block; }
a { color: var(--primary); text-decoration: none; }
h1, h2, h3, h4 { margin: 0; line-height: 1.35; }
.ic { flex: none; display: inline-block; vertical-align: middle; }
.ltr { direction: ltr; unicode-bidi: isolate; }
.muted { color: var(--text-3); }
.subtle { color: var(--text-4); }
.hidden { display: none !important; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
:focus-visible { outline: 2px solid var(--primary); outline-offset: 2px; }

.boot { min-height: 100vh; display: grid; place-items: center; }
.spinner { width: 28px; height: 28px; border-radius: 50%; border: 3px solid var(--primary-soft-2); border-top-color: var(--primary); animation: spin .8s linear infinite; display: inline-block; }
.spinner.sm { width: 16px; height: 16px; border-width: 2px; }
@keyframes spin { to { transform: rotate(360deg); } }

/* ---------- shell ---------- */
.shell { display: grid; grid-template-columns: 264px 1fr; min-height: 100vh; }
.sidebar {
  position: sticky; top: 0; height: 100vh;
  background: #fff; border-inline-end: 1px solid var(--border);
  display: flex; flex-direction: column;
}
.brand { display: flex; align-items: center; gap: 12px; padding: 18px 18px 16px; border-bottom: 1px solid var(--border); }
.brand-logo { width: 40px; height: 40px; border-radius: 12px; background: var(--primary); color: #fff; display: grid; place-items: center; flex: none; }
.brand-name { font-weight: 700; font-size: 15px; }
.brand-sub { font-size: 15px; font-weight: 600; color: var(--text-2); display: flex; align-items: center; gap: 6px; }
.nav { padding: 14px 10px; display: flex; flex-direction: column; gap: 4px; flex: 1; overflow-y: auto; }
.nav a {
  display: flex; align-items: center; gap: 12px; padding: 10px 14px; border-radius: 12px;
  color: var(--text-2); font-weight: 500; position: relative;
}
.nav a:hover { background: var(--bg-soft); }
.nav a.active { background: var(--primary); color: #fff; font-weight: 600; }
.nav .badge { margin-inline-start: auto; }
.nav a.active .badge { background: #fff; color: var(--primary); }
.sidebar-foot { padding: 12px; border-top: 1px solid var(--border); display: flex; flex-direction: column; gap: 8px; }
.main { min-width: 0; background: #fff; }
.page { max-width: 920px; margin: 0 auto; padding: 28px 24px 80px; }
.page.wide { max-width: 1100px; }
.topbar { display: none; }
.scrim { position: fixed; inset: 0; background: rgba(15, 23, 42, .4); z-index: 55; display: none; }

.badge { display: inline-grid; place-items: center; min-width: 22px; height: 22px; padding: 0 7px; border-radius: 999px; background: var(--danger); color: #fff; font-size: 12px; font-weight: 600; }

@media (max-width: 900px) {
  .shell { grid-template-columns: 1fr; }
  .sidebar { position: fixed; inset: 0 0 0 auto; width: 280px; z-index: 60; transform: translateX(100%); transition: transform .2s ease; box-shadow: var(--shadow-lg); }
  .shell.nav-open .sidebar { transform: none; }
  .shell.nav-open .scrim { display: block; }
  .topbar { display: flex; align-items: center; gap: 10px; padding: 10px 14px; border-bottom: 1px solid var(--border); position: sticky; top: 0; background: #fff; z-index: 40; }
  .topbar .brand-name { flex: 1; }
  .page { padding: 18px 16px 80px; }
}

/* ---------- page head ---------- */
.page-head { display: flex; align-items: flex-start; justify-content: space-between; gap: 16px; flex-wrap: wrap; margin-bottom: 18px; }
.page-title { font-size: 22px; font-weight: 700; display: flex; align-items: baseline; gap: 8px; }
.page-title .count { font-size: 14px; font-weight: 500; color: var(--text-4); }
.page-sub { font-size: 14px; color: var(--text-3); margin-top: 4px; }
.actions { display: flex; gap: 8px; flex-wrap: wrap; align-items: center; }
.back-link { display: inline-flex; align-items: center; gap: 6px; color: var(--text-3); font-size: 14px; margin-bottom: 10px; }
.back-link:hover { color: var(--primary); }

/* ---------- buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  height: 42px; padding: 0 16px; border-radius: 12px; border: 1px solid var(--border);
  background: #fff; color: var(--text-2); font-weight: 600; font-size: 14px; white-space: nowrap;
  transition: background .15s, border-color .15s, color .15s;
}
.btn:hover { background: var(--bg-soft); border-color: var(--border-strong); }
.btn:disabled { opacity: .55; cursor: not-allowed; }
.btn.primary { background: var(--primary); border-color: var(--primary); color: #fff; }
.btn.primary:hover { background: var(--primary-hover); border-color: var(--primary-hover); }
.btn.outline { border-color: var(--primary-soft-2); color: var(--primary); background: #fff; }
.btn.outline:hover { background: var(--primary-soft); }
.btn.danger { background: var(--danger); border-color: var(--danger); color: #fff; }
.btn.danger:hover { background: #b91c1c; }
.btn.danger-ghost { color: var(--danger); border-color: var(--danger-border); }
.btn.danger-ghost:hover { background: var(--danger-soft); }
.btn.ghost { border-color: transparent; background: transparent; }
.btn.ghost:hover { background: var(--bg-muted); }
.btn.sm { height: 34px; padding: 0 12px; font-size: 13px; border-radius: 10px; }
.btn.lg { height: 50px; padding: 0 22px; font-size: 16px; }
.btn.block { width: 100%; }
.icon-btn {
  width: 36px; height: 36px; display: inline-grid; place-items: center; border-radius: 10px;
  border: 0; background: transparent; color: var(--text-4);
}
.icon-btn:hover { background: var(--bg-muted); color: var(--text-2); }
.icon-btn.danger:hover { background: var(--danger-soft); color: var(--danger); }
.icon-btn.go { color: #7d8fd6; }
.icon-btn.go:hover { color: var(--primary); background: var(--primary-soft); }
.icon-btn:disabled { opacity: .4; cursor: not-allowed; }

/* ---------- inputs ---------- */
.field { display: flex; flex-direction: column; gap: 6px; }
.field > label, .label { font-size: 14px; font-weight: 600; color: var(--text-2); }
.hint { font-size: 13px; color: var(--text-3); }
.input, .select, .textarea {
  width: 100%; height: 44px; padding: 0 14px; border-radius: 12px; border: 1px solid var(--border);
  background: #fff; transition: border-color .15s, box-shadow .15s;
}
.textarea { height: auto; min-height: 96px; padding: 10px 14px; resize: vertical; line-height: 1.7; }
.input:focus, .select:focus, .textarea:focus { outline: none; border-color: var(--primary); box-shadow: 0 0 0 3px var(--primary-ring); }
.select {
  appearance: none; -webkit-appearance: none; padding-inline-end: 38px; cursor: pointer;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%2394a3b8' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E");
  background-repeat: no-repeat; background-position: left 14px center;
}
.search { position: relative; flex: 1; min-width: 200px; }
.search .ic { position: absolute; inset-inline-start: 14px; top: 50%; transform: translateY(-50%); color: var(--text-4); pointer-events: none; }
.search .input { padding-inline-start: 42px; }
.check { display: inline-flex; align-items: center; gap: 10px; cursor: pointer; user-select: none; font-size: 14px; }
.check input { width: 18px; height: 18px; accent-color: var(--primary); cursor: pointer; flex: none; }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
@media (max-width: 640px) { .form-grid { grid-template-columns: 1fr; } }
.input-group { display: flex; gap: 8px; }
.input-group .input { flex: 1; }

/* ---------- toolbar / chips ---------- */
.toolbar { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; margin-bottom: 14px; }
.seg { display: inline-flex; border: 1px solid var(--border); border-radius: 12px; overflow: hidden; height: 42px; }
.seg button { border: 0; background: #fff; width: 42px; display: grid; place-items: center; color: var(--text-4); }
.seg button.on { background: var(--primary); color: #fff; }
.chips { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; }
.chip {
  display: inline-flex; align-items: center; gap: 6px; height: 32px; padding: 0 14px; border-radius: 999px;
  border: 1px solid var(--border); background: #fff; color: var(--text-2); font-size: 13.5px; font-weight: 500; white-space: nowrap;
}
.chip:hover { border-color: var(--border-strong); }
.chip .n { color: var(--text-3); font-weight: 500; }
.chip.on { background: var(--primary); border-color: var(--primary); color: #fff; font-weight: 600; }
.chip.on .n { color: rgba(255, 255, 255, .85); }
.chip.dashed { border-style: dashed; }
.chip.plain { color: var(--text-3); }
.chip.red { color: var(--danger); border-color: var(--danger-border); background: var(--danger-soft); }
.chip.green { color: var(--success); border-color: var(--success-border); background: var(--success-soft); }
.chip.amber { color: var(--warning); border-color: var(--warning-border); background: var(--warning-soft); }
.chip.on.red { background: var(--danger); border-color: var(--danger); color: #fff; }
.chip.on.green { background: var(--success); border-color: var(--success); color: #fff; }
.chip.on.amber { background: var(--warning); border-color: var(--warning); color: #fff; }
.tagline { display: flex; gap: 10px; align-items: flex-start; margin-bottom: 18px; }
.tagline > .ic { margin-top: 7px; color: var(--text-4); }
.pill { display: inline-flex; align-items: center; gap: 4px; padding: 2px 10px; border-radius: 8px; background: var(--bg-muted); color: var(--text-3); font-size: 12.5px; font-weight: 600; }
.pill.teal { background: var(--primary-soft); color: var(--primary-hover); }
.pill.red { background: var(--danger-soft); color: var(--danger); }
.pill.green { background: var(--success-soft); color: var(--success); }
.pill.amber { background: var(--warning-soft); color: var(--warning); }

/* ---------- cards / lists ---------- */
.card { background: #fff; border: 1px solid var(--border); border-radius: var(--radius); box-shadow: var(--shadow); }
.card.pad { padding: 18px 20px; }
.stack { display: flex; flex-direction: column; gap: 12px; }
.row { display: flex; align-items: center; gap: 10px; }
.row.wrap { flex-wrap: wrap; }
.spacer { flex: 1; }
.empty { text-align: center; padding: 56px 20px; color: var(--text-3); }
.empty > .ic { color: var(--text-4); margin: 0 auto 10px; display: block; }
.empty h3 { color: var(--text-2); font-size: 16px; margin-bottom: 4px; }
.section-title { font-size: 16px; font-weight: 700; margin: 26px 0 12px; display: flex; align-items: center; gap: 8px; }
.meta { display: flex; flex-wrap: wrap; gap: 6px 16px; font-size: 13.5px; color: var(--text-3); align-items: center; }
.meta span { display: inline-flex; align-items: center; gap: 5px; }
.meta .ok { color: var(--success); }
.meta .warn { color: var(--warning); }
.meta .bad { color: var(--danger); }

/* question rows (bank) */
.q-row { display: flex; align-items: center; gap: 16px; padding: 14px 18px; }
.q-num { width: 34px; text-align: center; color: var(--text-4); font-size: 13px; flex: none; }
.q-thumb {
  width: 96px; height: 60px; border-radius: 10px; border: 1px solid var(--border); overflow: hidden; flex: none;
  background: var(--bg-soft); cursor: zoom-in; padding: 0;
}
.q-thumb img { width: 100%; height: 100%; object-fit: cover; object-position: top; }
.q-info { flex: 1; min-width: 0; display: flex; flex-direction: column; gap: 4px; align-items: flex-start; }
.q-type { font-size: 13px; color: var(--text-3); font-style: normal; display: inline-flex; gap: 6px; align-items: center; }
.q-answer { font-weight: 700; color: var(--success); font-size: 14px; display: inline-flex; align-items: center; gap: 4px; }
.q-answer.missing { color: var(--warning); font-weight: 600; font-size: 13px; }
.q-actions { display: flex; gap: 2px; align-self: flex-start; }
.q-check { flex: none; }
.q-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(230px, 1fr)); gap: 14px; }
.q-card { overflow: hidden; display: flex; flex-direction: column; }
.q-card .q-img { aspect-ratio: 1900 / 967; background: var(--bg-soft); border-bottom: 1px solid var(--border); cursor: zoom-in; position: relative; }
.q-card .q-img img { width: 100%; height: 100%; object-fit: contain; }
.q-card .q-body { padding: 10px 12px; display: flex; align-items: center; gap: 8px; }
.q-card .sel { position: absolute; top: 8px; inset-inline-start: 8px; background: #fff; border-radius: 6px; padding: 3px; display: grid; }
.q-card.selected, .q-row.selected { border-color: var(--primary); box-shadow: 0 0 0 2px var(--primary-ring); }

/* assignment cards */
.a-card { padding: 18px 20px; display: flex; flex-direction: column; gap: 10px; }
.a-top { display: flex; gap: 16px; align-items: flex-start; }
.a-card > .progress { margin-inline-start: 60px; }
@media (max-width: 640px) { .a-card > .progress { margin-inline-start: 0; } .a-card { padding: 14px; } }
.a-icon { width: 44px; height: 44px; border-radius: 12px; background: var(--primary-soft); color: var(--primary); display: grid; place-items: center; flex: none; }
.a-main { flex: 1; min-width: 0; display: flex; flex-direction: column; gap: 6px; }
.a-title { font-weight: 700; font-size: 15.5px; color: var(--text); }
.a-title a { color: inherit; }
.a-title a:hover { color: var(--primary); }
.a-side { display: flex; flex-direction: column; justify-content: space-between; align-items: flex-end; gap: 10px; }
.progress { display: flex; align-items: center; gap: 10px; }
.progress .bar { flex: 1; height: 6px; background: var(--bg-muted); border-radius: 999px; overflow: hidden; }
.progress .bar i { display: block; height: 100%; background: var(--primary); border-radius: 999px; }
.progress .pct { font-size: 12px; color: var(--text-4); min-width: 34px; text-align: left; }
.selbar {
  position: sticky; bottom: 16px; margin-top: 16px; display: flex; gap: 10px; align-items: center;
  background: var(--text); color: #fff; border-radius: 14px; padding: 10px 12px 10px 16px; box-shadow: var(--shadow-lg); z-index: 20;
}
.selbar .btn { height: 36px; }
.selbar .btn.ghost { color: #fff; }
.selbar .btn.ghost:hover { background: rgba(255, 255, 255, .12); }

/* table */
.table-wrap { overflow-x: auto; }
table.tbl { width: 100%; border-collapse: collapse; font-size: 14px; }
.tbl th { text-align: start; font-weight: 600; color: var(--text-3); font-size: 13px; padding: 10px 14px; border-bottom: 1px solid var(--border); white-space: nowrap; background: var(--bg-soft); }
.tbl td { padding: 12px 14px; border-bottom: 1px solid var(--border); vertical-align: middle; }
.tbl tr:last-child td { border-bottom: 0; }
.tbl tr.click { cursor: pointer; }
.tbl tr.click:hover td { background: var(--bg-soft); }

/* tabs */
.tabs { display: flex; gap: 4px; border-bottom: 1px solid var(--border); margin: 18px 0 16px; }
.tabs button { border: 0; background: none; padding: 10px 14px; font-weight: 600; color: var(--text-3); border-bottom: 2px solid transparent; margin-bottom: -1px; }
.tabs button.on { color: var(--primary); border-bottom-color: var(--primary); }

/* stats */
.stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 12px; }
.stat { padding: 14px 16px; }
.stat .k { font-size: 13.5px; color: var(--text-3); font-weight: 500; }
.stat .v { font-size: 22px; font-weight: 700; margin-top: 2px; }

/* ---------- modal ---------- */
.overlay { position: fixed; inset: 0; background: rgba(15, 23, 42, .5); z-index: 100; display: flex; align-items: center; justify-content: center; padding: 16px; animation: fade .15s ease; }
@keyframes fade { from { opacity: 0; } }
.dialog { background: #fff; border-radius: 18px; box-shadow: var(--shadow-lg); width: 100%; max-width: 520px; max-height: calc(100vh - 32px); display: flex; flex-direction: column; animation: pop .18s ease; }
.dialog.md { max-width: 680px; }
.dialog.lg { max-width: 920px; }
.dialog.xl { max-width: 1180px; }
@keyframes pop { from { transform: translateY(8px) scale(.98); opacity: 0; } }
.dialog-head { display: flex; align-items: center; gap: 12px; padding: 16px 20px; border-bottom: 1px solid var(--border); }
.dialog-head h3 { font-size: 17px; flex: 1; }
.dialog-body { padding: 20px; overflow-y: auto; }
.dialog-foot { display: flex; gap: 10px; justify-content: flex-start; padding: 14px 20px; border-top: 1px solid var(--border); flex-wrap: wrap; }
@media (max-width: 640px) {
  .overlay { padding: 0; align-items: flex-end; }
  .dialog, .dialog.md, .dialog.lg, .dialog.xl { max-width: none; border-radius: 18px 18px 0 0; max-height: 94vh; }
}

/* ---------- toasts ---------- */
.toasts { position: fixed; bottom: 20px; left: 50%; transform: translateX(-50%); z-index: 200; display: flex; flex-direction: column; gap: 8px; align-items: center; pointer-events: none; width: max-content; max-width: calc(100vw - 32px); }
.toast { background: var(--text); color: #fff; padding: 10px 18px; border-radius: 12px; box-shadow: var(--shadow-lg); font-size: 14px; display: flex; align-items: center; gap: 8px; animation: pop .2s ease; pointer-events: auto; }
.toast.error { background: var(--danger); }
.toast.success { background: #047857; }

/* ---------- alerts ---------- */
.alert { display: flex; gap: 10px; align-items: flex-start; padding: 12px 16px; border-radius: 12px; border: 1px solid var(--warning-border); background: var(--warning-soft); color: #92400e; font-size: 14px; }
.alert.info { border-color: #bae6fd; background: #f0f9ff; color: #075985; }
.alert.teal { border-color: var(--primary-soft-2); background: var(--primary-soft); color: var(--primary-hover); }
.alert.red { border-color: var(--danger-border); background: var(--danger-soft); color: #991b1b; }
.alert .ic { margin-top: 2px; }

/* ---------- login ---------- */
.login-wrap { min-height: 100vh; display: grid; place-items: center; padding: 24px 16px; background: linear-gradient(180deg, var(--primary-soft) 0%, #fff 55%); }
.login-card { width: 100%; max-width: 400px; padding: 32px 28px; }
.login-card .brand-logo { width: 56px; height: 56px; border-radius: 16px; margin: 0 auto 14px; }
.login-card h1 { text-align: center; font-size: 24px; }
.login-card p.sub { text-align: center; color: var(--text-3); margin: 4px 0 24px; }

/* ---------- letters / choices ---------- */
.letters { display: grid; grid-template-columns: repeat(4, 1fr); gap: 10px; }
.letter-btn {
  height: 56px; border-radius: 14px; border: 1.5px solid var(--border); background: #fff;
  display: flex; align-items: center; justify-content: center; gap: 10px; font-size: 20px; font-weight: 700; color: var(--text-2);
  transition: all .12s;
}
.letter-btn .dot { width: 34px; height: 34px; border-radius: 50%; display: grid; place-items: center; background: #fff; border: 2px solid var(--bubble); color: var(--primary); font-size: 16px; }
.letter-btn:hover { border-color: var(--primary); background: var(--primary-soft); }
.letter-btn.on { border-color: var(--primary); background: var(--primary); color: #fff; }
.letter-btn.on .dot { background: #fff; border-color: #fff; color: var(--primary); }
.letter-btn.right { border-color: var(--success); background: var(--success-soft); color: var(--success); }
.letter-btn.right .dot { background: var(--success); border-color: var(--success); color: #fff; }
.letter-btn.wrong { border-color: var(--danger); background: var(--danger-soft); color: var(--danger); }
.letter-btn.wrong .dot { background: var(--danger); border-color: var(--danger); color: #fff; }
.letter-btn[disabled] { cursor: default; }
.letter-btn[disabled]:not(.right):not(.wrong) { opacity: .55; }
.letter-btn[disabled]:hover:not(.right):not(.wrong):not(.on) { border-color: var(--border); background: #fff; }
.letter-btn .tag { font-size: 12px; font-weight: 600; }

/* ---------- question viewer ---------- */
.qimg { position: relative; border-radius: 14px; border: 1px solid var(--border); overflow: hidden; background: #f4f7f9; }
.qimg img { width: 100%; height: auto; }
.qimg .zoom { position: absolute; top: 8px; inset-inline-end: 8px; background: rgba(255, 255, 255, .92); border: 1px solid var(--border); }
.viewer { position: fixed; inset: 0; z-index: 150; background: rgba(2, 6, 23, .92); display: flex; align-items: center; justify-content: center; }
.viewer img { max-width: 100vw; max-height: 100vh; object-fit: contain; transition: transform .2s; background: #fff; }
.viewer.rot img { max-width: 100vh; max-height: 100vw; transform: rotate(90deg); }
.viewer .vbar { position: absolute; top: 12px; inset-inline-start: 12px; display: flex; gap: 8px; z-index: 2; }
.viewer .vbar button { width: 44px; height: 44px; border-radius: 12px; border: 0; background: rgba(255, 255, 255, .15); color: #fff; display: grid; place-items: center; }

/* ---------- editor (teacher) ---------- */
.editor { display: grid; grid-template-columns: 1fr 320px; gap: 20px; }
.editor .side { display: flex; flex-direction: column; gap: 14px; }
@media (max-width: 900px) { .editor { grid-template-columns: 1fr; } }
.kbd { display: inline-block; padding: 0 6px; border-radius: 6px; border: 1px solid var(--border); background: var(--bg-soft); font-size: 12px; color: var(--text-3); }
.thumbs { display: grid; grid-template-columns: repeat(auto-fill, minmax(120px, 1fr)); gap: 10px; }
.thumbs figure { margin: 0; border: 1px solid var(--border); border-radius: 10px; overflow: hidden; position: relative; background: var(--bg-soft); }
.thumbs figure img { width: 100%; aspect-ratio: 1900 / 967; object-fit: cover; object-position: top; }
.thumbs figcaption { font-size: 12px; padding: 4px 8px; color: var(--text-3); display: flex; justify-content: space-between; }
.thumbs .x { position: absolute; top: 4px; inset-inline-end: 4px; width: 26px; height: 26px; border-radius: 8px; background: rgba(255, 255, 255, .95); border: 1px solid var(--border); display: grid; place-items: center; color: var(--text-3); }
.thumbs .x:hover { color: var(--danger); }
.dropzone { border: 2px dashed var(--border-strong); border-radius: 14px; padding: 28px 16px; text-align: center; color: var(--text-3); cursor: pointer; transition: all .15s; background: var(--bg-soft); }
.dropzone:hover, .dropzone.over { border-color: var(--primary); background: var(--primary-soft); color: var(--primary-hover); }
.dropzone strong { display: block; color: var(--text-2); margin: 6px 0 2px; }
.bigbar { height: 10px; background: var(--bg-muted); border-radius: 999px; overflow: hidden; }
.bigbar i { display: block; height: 100%; background: var(--primary); transition: width .2s; }
.popover { position: absolute; z-index: 30; background: #fff; border: 1px solid var(--border); border-radius: 14px; box-shadow: var(--shadow-lg); padding: 14px; min-width: 260px; }
.rel { position: relative; }
.opt-list { display: flex; flex-direction: column; gap: 8px; }
.tag-row { display: flex; gap: 8px; align-items: center; padding: 8px 0; border-bottom: 1px solid var(--border); }
.tag-row:last-child { border-bottom: 0; }
.tag-row .input { height: 38px; }
.pager { display: flex; gap: 6px; justify-content: center; align-items: center; margin-top: 18px; flex-wrap: wrap; }
.pager button { min-width: 36px; height: 36px; border-radius: 10px; border: 1px solid var(--border); background: #fff; padding: 0 10px; color: var(--text-2); }
.pager button.on { background: var(--primary); border-color: var(--primary); color: #fff; }
.pager button:disabled { opacity: .45; cursor: not-allowed; }
.settings-box { border: 1px solid var(--border); border-radius: 14px; padding: 16px; display: flex; flex-direction: column; gap: 14px; }
.picker-list { max-height: 300px; overflow-y: auto; border: 1px solid var(--border); border-radius: 12px; }
.picker-list label { display: flex; align-items: center; gap: 10px; padding: 10px 14px; border-bottom: 1px solid var(--border); cursor: pointer; }
.picker-list label:last-child { border-bottom: 0; }
.picker-list label:hover { background: var(--bg-soft); }
.cred { background: var(--bg-soft); border: 1px dashed var(--border-strong); border-radius: 12px; padding: 14px 16px; font-size: 15px; line-height: 2; }

@media (max-width: 640px) {
  .page-head .actions .btn { height: 38px; padding: 0 12px; font-size: 13px; }
  .q-row { flex-wrap: wrap; gap: 12px; padding: 12px 14px; }
  .q-num { width: auto; }
  .q-info { min-width: 140px; }
  .q-actions { width: 100%; justify-content: flex-end; border-top: 1px solid var(--border); padding-top: 6px; }
  .a-top { gap: 12px; }
  .a-icon { width: 38px; height: 38px; }
  .page-title { font-size: 20px; }
}

/* ---------- student ---------- */
.s-header { display: flex; align-items: center; gap: 12px; padding: 12px 20px; border-bottom: 1px solid var(--border); background: #fff; position: sticky; top: 0; z-index: 30; }
.s-header .brand-logo { width: 36px; height: 36px; border-radius: 10px; }
.s-header .who { margin-inline-start: auto; display: flex; align-items: center; gap: 8px; color: var(--text-3); font-size: 14px; }
.s-page { max-width: 820px; margin: 0 auto; padding: 22px 16px 80px; }
.hw-card { padding: 16px 18px; display: flex; flex-direction: column; gap: 10px; }
.hw-card .top { display: flex; gap: 14px; align-items: flex-start; }
.status { display: inline-flex; align-items: center; gap: 5px; font-size: 12.5px; font-weight: 600; padding: 3px 10px; border-radius: 999px; }
.status.new { background: var(--primary-soft); color: var(--primary-hover); }
.status.progress { background: var(--marker-soft); color: var(--marker-ink); }
.status.done { background: var(--success-soft); color: var(--success); }
.status.late { background: var(--danger-soft); color: var(--danger); }
.status.closed { background: var(--bg-muted); color: var(--text-3); }

.solve { min-height: 100vh; display: flex; flex-direction: column; background: var(--bg-soft); }
.solve-top { background: #fff; border-bottom: 1px solid var(--border); padding: 10px 16px; display: flex; align-items: center; gap: 10px; position: sticky; top: 0; z-index: 20; }
.solve-top .title { font-weight: 700; flex: 1; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.timer { display: inline-flex; align-items: center; gap: 6px; padding: 6px 12px; border-radius: 999px; background: var(--bg-muted); font-weight: 700; font-variant-numeric: tabular-nums; }
.timer.low { background: var(--danger-soft); color: var(--danger); }
.solve-progress { height: 4px; background: var(--border); }
.solve-progress i { display: block; height: 100%; background: var(--primary); transition: width .2s; }
.solve-body { flex: 1; width: 100%; max-width: 1000px; margin: 0 auto; padding: 16px; display: flex; flex-direction: column; gap: 14px; }
.solve-meta { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.solve-meta .qn { font-weight: 700; font-size: 16px; }
.solve-foot { position: sticky; bottom: 0; background: #fff; border-top: 1px solid var(--border); padding: 10px 16px calc(10px + env(safe-area-inset-bottom)); }
.solve-foot .inner { max-width: 1000px; margin: 0 auto; display: flex; gap: 10px; align-items: center; }
.save-state { font-size: 12.5px; color: var(--text-4); display: inline-flex; align-items: center; gap: 6px; }
.save-state.bad { color: var(--danger); }
.qmap { display: grid; grid-template-columns: repeat(auto-fill, minmax(44px, 1fr)); gap: 8px; }
.qmap button { height: 44px; border-radius: 10px; border: 1.5px solid var(--border); background: #fff; font-weight: 600; color: var(--text-3); }
.qmap button.ans { background: var(--primary); border-color: var(--primary); color: #fff; }
.qmap button.cur { box-shadow: 0 0 0 3px var(--marker); border-color: var(--marker-deep); }
.qmap button.right { background: var(--success-soft); border-color: var(--success); color: var(--success); }
.qmap button.wrong { background: var(--danger-soft); border-color: var(--danger); color: var(--danger); }
.rotate-hint { display: none; }
@media (max-width: 640px) and (orientation: portrait) {
  .rotate-hint { display: flex; }
  .letters { grid-template-columns: repeat(2, 1fr); }
}
.score-hero { padding: 24px; display: flex; gap: 24px; align-items: center; flex-wrap: wrap; }
.ring { --p: 0; width: 120px; height: 120px; border-radius: 50%; display: grid; place-items: center; flex: none;
  background: conic-gradient(var(--ring-color, var(--primary)) calc(var(--p) * 1%), var(--bg-muted) 0); }
.ring > div { width: 94px; height: 94px; border-radius: 50%; background: #fff; display: grid; place-items: center; text-align: center; }
.ring b { font-size: 26px; line-height: 1; }
.ring small { font-size: 12px; color: var(--text-3); }
.res-q { padding: 16px; display: flex; flex-direction: column; gap: 12px; }
.res-q .head { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.explain { border-radius: 4px 12px 12px 4px; background: var(--marker-soft); border: 1px solid #f1df9a; border-inline-start: 4px solid var(--marker-deep); padding: 12px 16px; white-space: pre-wrap; line-height: 1.85; color: var(--text); }
.explain .t { font-weight: 700; display: flex; gap: 6px; align-items: center; margin-bottom: 4px; color: var(--marker-ink); }

/* =====================================================================
   Identity layer — "ورقة الإجابة": graph paper, ink, pencil, teacher's pen
   ===================================================================== */

body {
  background-color: var(--paper);
  background-image:
    linear-gradient(var(--grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid) 1px, transparent 1px);
  background-size: 26px 26px;
  background-attachment: fixed;
}
.main { background: transparent; }
.sidebar, .topbar, .s-header { background: #fff; }
.card { border-color: var(--border); }
::selection { background: var(--marker); color: var(--text); }

/* logo + wordmark */
.logo { display: block; flex: none; }
.brand-logo { background: none; width: auto; height: auto; border-radius: 0; }
.wordmark { font-family: var(--hand); font-weight: 700; font-size: 25px; line-height: 1.5; color: var(--text); letter-spacing: 0; }
.brand .wordmark { font-size: 24px; }
.brand-sub { margin-top: 3px; }
.topbar .wordmark { font-size: 22px; flex: 1; }
.s-header .wordmark { font-size: 22px; }

/* navigation */
.nav a.active { background: var(--primary); color: #fff; box-shadow: 0 6px 16px -8px rgba(36, 65, 176, .7); }
.nav a.active .ic { color: var(--marker); }
.badge { background: var(--danger); }

/* chips & segmented controls use ink */
.chip.on { background: var(--primary); border-color: var(--primary); }
.seg button.on { background: var(--primary); }
.pager button.on { background: var(--primary); border-color: var(--primary); }
.progress .bar i, .bigbar i, .solve-progress i { background: var(--primary); }
.a-icon { background: var(--primary-soft); color: var(--primary); border-radius: 12px; }
.pill.teal { background: var(--primary-soft); color: var(--primary); }

/* page titles: a highlighter stroke under the title, the one decorative mark of the system */
.page-title { position: relative; isolation: isolate; }
.page-title::after {
  content: ''; position: absolute; inset-inline-start: -4px; bottom: -3px; width: 46px; height: 6px; z-index: -1;
  background: var(--marker); border-radius: 2px 6px 3px 7px; transform: rotate(-1.5deg); opacity: .85;
}

/* ---------- OMR answer bubbles ---------- */
.letter-btn { height: 60px; border-radius: 14px; border: 1.5px solid var(--border); background: #fff; color: var(--text-2); }
.letter-btn .dot { position: relative; isolation: isolate; width: 38px; height: 38px; font-size: 17px; font-weight: 700; transition: color .15s, border-color .15s; }
.letter-btn .dot::before {
  content: ''; position: absolute; inset: 2px; border-radius: 50%; z-index: -1;
  background: radial-gradient(circle at 34% 30%, #5a6072 0%, var(--graphite) 62%, #15181f 100%);
  transform: scale(0); transition: transform .2s cubic-bezier(.3, 1.5, .5, 1);
}
.letter-btn:hover:not([disabled]) { border-color: var(--bubble); background: var(--primary-soft); }
.letter-btn:hover:not([disabled]) .dot { border-color: var(--primary); }
.letter-btn.on { border-color: var(--graphite); background: #f3f4f7; color: var(--text); }
.letter-btn.on .dot { color: #fff; border-color: var(--graphite); background: #fff; }
.letter-btn.on .dot::before { transform: scale(1); }
.letter-btn.on:hover:not([disabled]) { background: #eceef3; border-color: var(--graphite); }

/* teacher's marks on the reviewed sheet */
.letter-btn.right { border-color: var(--success); background: var(--success-soft); color: var(--success); }
.letter-btn.right .dot { border-color: var(--success); color: var(--success); background: #fff; overflow: visible; }
.letter-btn.right .dot::after {
  content: ''; position: absolute; inset: -10px; pointer-events: none;
  background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 60 60'%3E%3Cpath d='M33 5.5c12.6.4 22.4 10 21.6 23.4-.8 14.2-12.4 25-26.4 24.2C14 52.3 4.8 42.6 5.6 29.4 6.4 15.6 17.6 6.2 31.8 7.4c8.6.7 15.4 5 19.4 11.6' fill='none' stroke='%2317824B' stroke-width='3.2' stroke-linecap='round'/%3E%3C/svg%3E") center / contain no-repeat;
}
.letter-btn.right.mine .dot { color: #fff; }
.letter-btn.right.mine .dot::before { transform: scale(1); background: radial-gradient(circle at 34% 30%, #3aa56d 0%, var(--success) 65%); }
.letter-btn.wrong { border-color: var(--danger); background: var(--danger-soft); color: var(--danger); }
.letter-btn.wrong .dot { border-color: var(--danger); color: #fff; }
.letter-btn.wrong .dot::before { transform: scale(1); background: radial-gradient(circle at 34% 30%, #e2626b 0%, var(--danger) 65%); }

.letter-btn[disabled]:not(.right):not(.wrong) { opacity: .5; }

/* question map: answered = pencilled bubble */
.qmap button { border-radius: 50%; aspect-ratio: 1; height: auto; }
.qmap button.ans { background: var(--graphite); border-color: var(--graphite); color: #fff; }

/* timer */
.timer { background: #fff; border: 1.5px solid var(--border); color: var(--text); }
.timer.low { background: var(--danger-soft); border-color: var(--danger-border); color: var(--danger); }

/* question image frame: a sheet pinned on the grid */
.qimg { background: #fff; border-color: var(--border); box-shadow: var(--shadow); }
.solve { background: transparent; }

/* ---------- graded score: the teacher's circled mark ---------- */
.grade { position: relative; width: 132px; height: 132px; flex: none; display: grid; place-items: center; color: var(--pen, var(--success)); }
.grade svg { position: absolute; inset: 0; width: 100%; height: 100%; overflow: visible; }
.grade svg path { fill: none; stroke: currentColor; stroke-width: 3.4; stroke-linecap: round;
  stroke-dasharray: 420; stroke-dashoffset: 420; animation: pen-draw .9s .15s ease-out forwards; }
.grade .mark { position: relative; text-align: center; line-height: 1; }
.grade .mark b { display: block; font-family: var(--font); font-weight: 700; font-size: 40px; line-height: 1.1; font-variant-numeric: tabular-nums; }
.grade .mark span { font-size: 13px; color: var(--text-3); }
@keyframes pen-draw { to { stroke-dashoffset: 0; } }
@media (prefers-reduced-motion: reduce) {
  .grade svg path { animation: none; stroke-dashoffset: 0; }
  .letter-btn .dot::before { transition: none; }
}

/* login */
.login-wrap { background: transparent; min-height: 100vh; min-height: 100dvh; padding: 32px 16px; display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 18px; }
.login-card { width: 100%; max-width: 440px; padding: 40px 36px 32px; border-radius: 20px; box-shadow: 0 1px 0 rgba(27, 31, 40, .04), 0 24px 48px -28px rgba(20, 28, 58, .35); }
.login-brand { text-align: center; padding-bottom: 26px; margin-bottom: 26px; border-bottom: 1px dashed var(--border-strong); }
.login-brand .logo { margin: 0 auto 16px; }
.login-brand h1.wordmark { font-size: 42px; line-height: 1.55; margin: 0; padding-top: 2px; }
.login-brand .sub { margin: 10px 0 0; font-size: 15.5px; color: var(--text-3); line-height: 1.7; }
.login-form { display: flex; flex-direction: column; gap: 18px; }
.login-form .field > label { font-size: 14.5px; }
.input-wrap { position: relative; }
.input-wrap > .ic { position: absolute; right: 15px; top: 50%; transform: translateY(-50%); color: var(--text-4); pointer-events: none; }
.input-wrap .input { height: 50px; padding-right: 46px; font-size: 16px; }
.input-wrap .input.has-toggle { padding-left: 48px; }
.input-wrap .toggle { position: absolute; left: 6px; top: 50%; transform: translateY(-50%); width: 38px; height: 38px; border: 0; background: transparent; border-radius: 10px; color: var(--text-3); display: grid; place-items: center; }
.input-wrap .toggle:hover { background: var(--bg-muted); color: var(--text); }
.input-wrap:focus-within > .ic { color: var(--primary); }
.caps-hint { font-size: 13px; color: var(--warning); display: flex; gap: 6px; align-items: center; }
.login-form .btn.lg { height: 52px; font-size: 16.5px; margin-top: 4px; }
.login-help { margin: 22px 0 0; text-align: center; font-size: 14px; color: var(--text-3); line-height: 1.7; }
.login-foot { font-size: 13px; color: var(--text-4); }
@media (max-width: 480px) {
  .login-card { padding: 30px 20px 24px; border-radius: 18px; }
  .login-brand h1.wordmark { font-size: 36px; }
}

/* clarity pass */
.input::placeholder, .textarea::placeholder { color: var(--text-4); opacity: 1; }
.subtle { color: var(--text-4); }
.nav a { color: var(--text-2); font-size: 15.5px; }
.q-num { color: var(--text-3); font-weight: 600; font-size: 14px; }
.tbl td { color: var(--text-2); }
.empty { color: var(--text-3); }
.empty h3 { font-size: 17px; color: var(--text); }
.brand-sub .ic { color: var(--primary); }
.s-header .who { color: var(--text-2); font-weight: 600; font-size: 15px; }
.save-state { color: var(--text-3); }
.dialog-head h3 { font-size: 18px; }

.who-card { display: flex; align-items: center; gap: 12px; margin: 14px 12px 4px; padding: 12px 14px; border-radius: 14px; background: var(--primary-soft); border: 1px solid var(--primary-soft-2); }
.avatar { width: 42px; height: 42px; border-radius: 50%; flex: none; display: grid; place-items: center; background: var(--primary); color: #fff; font-size: 19px; font-weight: 700; box-shadow: 0 0 0 3px #fff, 0 0 0 4px var(--primary-soft-2); }
.who-name { font-size: 17px; font-weight: 700; color: var(--text); line-height: 1.3; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.who-role { font-size: 13px; color: var(--text-3); font-weight: 500; }
.page-title .count { color: var(--text-3); }
.progress .pct { color: var(--text-3); font-size: 13px; font-weight: 600; }

/* ---------- layout safety + mobile polish ---------- */
.shell, .solve, #app { overflow-x: clip; }
.flip { transform: scaleX(-1); }
@media (max-width: 640px) {
  .page-head { gap: 12px; }
  .page-head .actions { width: 100%; }
  .page-head .actions > .btn, .page-head .actions > a.btn { flex: 1 1 auto; }
  .selbar { flex-wrap: wrap; bottom: 10px; padding: 10px; gap: 8px; }
  .selbar .spacer { display: none; }
  .toolbar .select { flex: 1 1 140px; width: auto !important; min-width: 0 !important; }
  /* tables become stacked cards */
  .tbl.stack thead { display: none; }
  .tbl.stack, .tbl.stack tbody, .tbl.stack tr, .tbl.stack td { display: block; width: 100%; }
  .tbl.stack tr { padding: 12px 14px; border-bottom: 1px solid var(--border); }
  .tbl.stack tr:last-child { border-bottom: 0; }
  .tbl.stack td { border: 0; padding: 4px 0; display: flex; justify-content: space-between; align-items: center; gap: 12px; text-align: start; }
  .tbl.stack td[data-label] { justify-content: flex-start; gap: 8px; }
  .tbl.stack td[data-label]::before { content: attr(data-label); color: var(--text-3); font-size: 13px; font-weight: 600; flex: none; margin-inline-end: auto; }
  .tbl.stack td.lead { font-size: 16px; padding-bottom: 8px; display: block; }
  .tbl.stack td.acts { padding-top: 8px; justify-content: flex-end; }
  .tbl.stack td.acts:empty { display: none; }
  .tbl.stack tr.click:hover td { background: transparent; }
}

@media (max-width: 640px) {
  .score-hero { flex-direction: column; text-align: center; gap: 14px; padding: 22px 16px; }
  .score-hero .stack { align-items: center; min-width: 0 !important; width: 100%; }
  .score-hero .meta, .score-hero .chips { justify-content: center; }
}