:root {
  --bg: #e8eef6;
  --card: #ffffff;
  --ink: #223149;
  --muted: #6a7891;
  --line: #dae2ee;
  --accent: #3f6fb0;
  --accent-ink: #ffffff;
  --g-high: #2e9e6b;
  --g-medhigh: #6cba6a;
  --g-avg: #b8bfc9;
  --g-medlow: #e79a4b;
  --g-low: #d9634f;
  --shadow: 0 1px 3px rgba(30,50,90,.08), 0 8px 24px rgba(30,50,90,.07);
}
@media (prefers-color-scheme: dark) {
  :root { --bg:#12151b; --card:#1c212b; --ink:#eef1f5; --muted:#8b95a5;
          --line:#2b323d; --g-avg:#5b6472; }
}
* { box-sizing: border-box; -webkit-tap-highlight-color: transparent; }
html, body { margin: 0; }
body {
  font: 16px/1.4 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  background-image: linear-gradient(185deg, color-mix(in srgb, var(--accent) 9%, var(--bg)) 0%, var(--bg) 42%);
  background-attachment: fixed;
  color: var(--ink);
  padding: env(safe-area-inset-top) env(safe-area-inset-right) env(safe-area-inset-bottom) env(safe-area-inset-left);
}
#app { max-width: 560px; margin: 0 auto; min-height: 100vh; display: flex; flex-direction: column; }
#hdr { padding: 18px 20px 12px; }
#hdr-title { font-weight: 700; font-size: 15px; letter-spacing: .5px; color: var(--accent); text-transform: uppercase; }
#hdr-sub { font-weight: 700; font-size: 22px; margin-top: 2px; }
#main { flex: 1; padding: 4px 16px 16px; }
#foot { padding: 12px 16px calc(16px + env(safe-area-inset-bottom)); }

.card { background: var(--card); border-radius: 16px; box-shadow: var(--shadow); padding: 18px; margin-bottom: 14px; }
.group-name { font-size: 13px; font-weight: 700; text-transform: uppercase; letter-spacing: .5px; color: var(--accent); margin: 2px 0 14px; }
.field { padding: 12px 0; border-top: 1px solid var(--line); }
.field:first-of-type { border-top: 0; padding-top: 2px; }
.field-label { font-weight: 600; margin-bottom: 10px; display: flex; justify-content: space-between; align-items: center; }
.clear-btn { font-size: 13px; color: var(--muted); background: none; border: 0; padding: 4px 6px; }

/* grade buttons — icon only, cool gradient (green center -> blue up, slate down) */
.grades { display: grid; grid-template-columns: repeat(5, 1fr); gap: 8px; }
.gbtn { border: 1.5px solid var(--line); background: var(--card); color: var(--gc, #9aa6b6);
  border-radius: 13px; padding: 15px 2px; display: flex; flex-direction: column; align-items: center; gap: 5px; }
.gbtn svg { width: 22px; height: 22px; display: block; }
.gbtn small { font-size: 10px; font-weight: 700; color: var(--muted); letter-spacing: .2px; }
.gbtn.sel { background: var(--gc); border-color: transparent; color: #fff;
  box-shadow: 0 5px 14px color-mix(in srgb, var(--gc) 38%, transparent); }
.gbtn.sel small { color: rgba(255,255,255,.92); }
.gbtn[data-v="2"]  { --gc: #2f6fb0; }
.gbtn[data-v="1"]  { --gc: #4a93c4; }
.gbtn[data-v="0"]  { --gc: #33a06d; }
.gbtn[data-v="-1"] { --gc: #6f9a92; }
.gbtn[data-v="-2"] { --gc: #8795a8; }
.ae-q { margin: 4px 0 18px; color: var(--muted); font-size: 16px; }
.btn.outline { background: var(--card); box-shadow: var(--shadow); color: var(--ink); }

/* toggle pills */
.pill { display: inline-flex; align-items: center; gap: 8px; border: 1.5px solid var(--line);
  background: var(--card); color: var(--ink); border-radius: 999px; padding: 11px 16px; font-weight: 600; font-size: 15px; }
.pill .dot { width: 18px; height: 18px; border-radius: 6px; border: 1.5px solid var(--muted); display: inline-block; }
.pill.on { border-color: var(--accent); background: color-mix(in srgb, var(--accent) 10%, var(--card)); }
.pill.on .dot { background: var(--accent); border-color: var(--accent); position: relative; }
.pill.on .dot::after { content: "✓"; color: #fff; font-size: 12px; position: absolute; left: 3px; top: -1px; }
.pill.auto { opacity: .95; }
.pill-row { display: flex; flex-wrap: wrap; gap: 8px; }

/* number */
.num { width: 100%; font-size: 22px; font-weight: 700; padding: 12px 14px; border: 1.5px solid var(--line);
  border-radius: 12px; background: var(--card); color: var(--ink); text-align: center; }

/* chips (people) */
.chips { display: flex; flex-wrap: wrap; gap: 8px; }
.chip { border: 1.5px solid var(--line); background: var(--card); color: var(--ink); border-radius: 999px;
  padding: 9px 14px; font-weight: 600; font-size: 14px; }
.chip.on { background: var(--accent); color: #fff; border-color: var(--accent); }
.add-row { display: flex; gap: 8px; margin-top: 10px; }
.add-row input { flex: 1; border: 1.5px solid var(--line); border-radius: 10px; padding: 10px 12px; font-size: 15px; background: var(--card); color: var(--ink); }
.add-row button { border: 0; background: var(--line); color: var(--ink); border-radius: 10px; padding: 0 16px; font-weight: 700; }

textarea.note { width: 100%; min-height: 80px; border: 1.5px solid var(--line); border-radius: 12px; padding: 12px; font: inherit; background: var(--card); color: var(--ink); resize: vertical; }

/* buttons */
.btn { display: block; width: 100%; border: 0; border-radius: 14px; padding: 16px; font-size: 17px; font-weight: 700; }
.btn.primary { background: var(--accent); color: var(--accent-ink); }
.btn.ghost { background: transparent; color: var(--muted); font-weight: 600; }
.btn.big { padding: 22px; font-size: 19px; margin-bottom: 12px; }
.btn.big .sub { display: block; font-size: 13px; font-weight: 500; opacity: .8; margin-top: 3px; }
.btn-row { display: flex; gap: 10px; }
.btn-row .btn { flex: 1; }

/* progress */
.dots { text-align: center; margin-bottom: 14px; line-height: 0; }
.dots i { display: inline-block; width: 7px; height: 7px; margin: 0 3px; border-radius: 50%; background: var(--line); vertical-align: middle; }
.dots i.on { background: var(--accent); }
.dots i.seen { background: var(--g-medhigh); }

/* misc */
.banner { background: color-mix(in srgb, var(--g-medlow) 16%, var(--card)); border: 1px solid color-mix(in srgb, var(--g-medlow) 40%, var(--card));
  border-radius: 14px; padding: 14px 16px; margin-bottom: 16px; }
.banner b { display: block; margin-bottom: 6px; }
.banner button { display: block; width: 100%; text-align: left; background: var(--card); border: 1px solid var(--line);
  border-radius: 10px; padding: 10px 12px; margin-top: 6px; font-weight: 600; color: var(--ink); }
.review-item { display: flex; justify-content: space-between; padding: 8px 0; border-top: 1px solid var(--line); font-size: 15px; }
.review-item:first-child { border-top: 0; }
.review-item .v { font-weight: 700; }
.review-group { font-size: 12px; text-transform: uppercase; letter-spacing: .5px; color: var(--accent); font-weight: 700; margin: 14px 0 2px; }
.done { text-align: center; padding: 40px 0; }
.done .check { width: 76px; height: 76px; border-radius: 50%; background: var(--g-high); color: #fff; font-size: 40px;
  display: flex; align-items: center; justify-content: center; margin: 0 auto 18px; }
.spin { text-align: center; color: var(--muted); padding: 40px; }