:root {
  color-scheme: light dark;
  --bg: #f4f6fb;
  --surface: #ffffff;
  --surface-2: #eef1f8;
  --ink: #16213e;
  --ink-soft: #5b6480;
  --line: #d9dff0;
  --brand: #3d5afe;
  --brand-ink: #ffffff;
  --good: #0f8a4a;
  --good-bg: #e3f6ea;
  --bad: #c62828;
  --bad-bg: #fdeaea;
  --warn: #9a6400;
  --warn-bg: #fff6e0;
  --radius: 14px;
  --shadow: 0 1px 2px rgba(22, 33, 62, .08), 0 8px 24px rgba(22, 33, 62, .06);
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #11162a;
    --surface: #1a2140;
    --surface-2: #222b50;
    --ink: #eef1fb;
    --ink-soft: #9aa5c8;
    --line: #313c69;
    --brand: #7b8cff;
    --brand-ink: #0d1124;
    --good: #5ddb95;
    --good-bg: #16331f;
    --bad: #ff8f8f;
    --bad-bg: #3a1a1c;
    --warn: #ffcf70;
    --warn-bg: #3a2f12;
    --shadow: 0 1px 2px rgba(0, 0, 0, .3), 0 8px 24px rgba(0, 0, 0, .25);
  }
}

* { box-sizing: border-box; }

/* display-regler pa klasser vinner annars over hidden-attributet */
[hidden] { display: none !important; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 16px/1.5 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  padding-bottom: 3rem;
  -webkit-text-size-adjust: 100%;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 5;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: .5rem;
  padding: max(.6rem, env(safe-area-inset-top)) 1rem .6rem;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}

.topbar h1 { margin: 0; font-size: 1.05rem; text-align: center; letter-spacing: .01em; }
.topbar .back { justify-self: start; }
.topbar .sync { justify-self: end; }

main {
  max-width: 44rem;
  margin: 0 auto;
  padding: 1rem 1rem 0;
}

h2 { font-size: .8rem; text-transform: uppercase; letter-spacing: .08em; color: var(--ink-soft); margin: 1.6rem 0 .6rem; }
h2:first-child { margin-top: .4rem; }
.muted { color: var(--ink-soft); font-size: .85rem; }

button {
  font: inherit;
  font-weight: 600;
  cursor: pointer;
  border: 1px solid var(--line);
  background: var(--surface);
  color: var(--ink);
  border-radius: 10px;
  padding: .5rem .85rem;
  transition: transform .06s ease, filter .15s ease;
}
button:active { transform: scale(.98); }
button:disabled { opacity: .45; cursor: not-allowed; }
button.primary { background: var(--brand); color: var(--brand-ink); border-color: transparent; }
button.good { background: var(--good); color: #fff; border-color: transparent; }
button.bad { background: var(--bad); color: #fff; border-color: transparent; }
button.ghost { background: transparent; }
button.big { padding: .9rem 1.1rem; font-size: 1.02rem; border-radius: 12px; }
button.danger-text { color: var(--bad); border: none; background: none; padding: .35rem .5rem; }

.actions { display: flex; flex-wrap: wrap; gap: .6rem; margin: 1rem 0; }
.actions .big { flex: 1 1 10rem; }

/* --- elever ------------------------------------------------------------ */
.students { display: grid; gap: .75rem; grid-template-columns: repeat(auto-fit, minmax(12rem, 1fr)); }
.student {
  display: flex; flex-direction: column; align-items: flex-start; gap: .2rem;
  padding: 1.1rem; text-align: left;
  background: var(--surface); border-radius: var(--radius); box-shadow: var(--shadow); border: 1px solid transparent;
}
.student strong { font-size: 1.25rem; }
.student small { color: var(--ink-soft); font-weight: 500; }
.student details.older {
  background: var(--surface);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
}
details.older > summary {
  display: flex;
  align-items: center;
  gap: .55rem;
  padding: .8rem .9rem;
  font-weight: 700;
  font-size: .95rem;
  cursor: pointer;
  list-style: none;
  user-select: none;
}
details.older > summary::-webkit-details-marker { display: none; }
details.older > summary small { font-weight: 500; color: var(--ink-soft); margin-left: auto; }
details.older > summary .chev {
  display: inline-block;
  font-size: 1.2rem;
  line-height: 1;
  color: var(--ink-soft);
  transition: transform .18s ease;
}
details.older[open] > summary .chev { transform: rotate(90deg); }
details.older[open] > summary { border-bottom: 1px solid var(--line); }
.older-body { display: grid; gap: .5rem; padding: .5rem; background: var(--surface-2); }
.older-body .week { box-shadow: none; border: 1px solid var(--line); }

.pill { margin-top: .4rem; }

/* --- listval ---------------------------------------------------------- */
button.small { padding: .5rem .8rem; font-size: .88rem; font-weight: 600; }
button.wide { width: 100%; }

.chips { display: flex; flex-wrap: wrap; gap: .5rem; }
.chip {
  border-radius: 999px; padding: .45rem .9rem; font-size: .9rem;
  background: var(--surface); border: 1px solid var(--line);
}
.chip[aria-pressed="true"] { background: var(--brand); color: var(--brand-ink); border-color: transparent; }

.lists { display: grid; gap: .5rem; }
.week { background: var(--surface); border-radius: var(--radius); box-shadow: var(--shadow); overflow: hidden; }
.week > .week-head {
  display: flex; align-items: baseline; gap: .5rem;
  padding: .6rem .9rem; background: var(--surface-2); font-weight: 700; font-size: .95rem;
}
.week > .week-head small { font-weight: 500; color: var(--ink-soft); }

label.pick {
  display: flex; align-items: center; gap: .7rem;
  padding: .7rem .9rem; border-top: 1px solid var(--line); cursor: pointer;
}
label.pick:first-of-type { border-top: none; }
label.pick input { width: 1.2rem; height: 1.2rem; accent-color: var(--brand); flex: none; }
label.pick .pick-text { flex: 1; min-width: 0; }
label.pick .pick-text strong { display: block; font-weight: 600; }
label.pick .pick-text small { color: var(--ink-soft); }
label.pick:has(input:checked) { background: color-mix(in srgb, var(--brand) 9%, transparent); }

.pill {
  display: inline-block; font-size: .72rem; font-weight: 700; letter-spacing: .04em;
  padding: .15rem .5rem; border-radius: 999px; background: var(--surface-2); color: var(--ink-soft);
}
.pill.new { background: var(--good-bg); color: var(--good); }

.options { display: grid; gap: .75rem; grid-template-columns: repeat(auto-fit, minmax(13rem, 1fr)); }
fieldset {
  margin: 0; border: 1px solid var(--line); border-radius: var(--radius);
  padding: .5rem .8rem .8rem; background: var(--surface);
}
legend { font-size: .72rem; text-transform: uppercase; letter-spacing: .08em; color: var(--ink-soft); font-weight: 700; padding: 0 .3rem; }
label.opt { display: flex; gap: .6rem; align-items: flex-start; padding: .4rem 0; cursor: pointer; }
label.opt input { margin-top: .25rem; width: 1.1rem; height: 1.1rem; accent-color: var(--brand); flex: none; }
label.opt small { display: block; color: var(--ink-soft); font-size: .8rem; }

/* --- ovning ----------------------------------------------------------- */
.progress { height: 6px; border-radius: 999px; background: var(--surface-2); overflow: hidden; margin-bottom: .5rem; }
.progress .bar { height: 100%; width: 0; background: var(--brand); border-radius: 999px; transition: width .25s ease; }
.quiz-meta { display: flex; justify-content: space-between; gap: 1rem; margin: 0 0 1rem; color: var(--ink-soft); font-size: .82rem; }

.card {
  background: var(--surface); border-radius: var(--radius); box-shadow: var(--shadow);
  padding: 1.6rem 1.2rem; text-align: center;
}
.ask { margin: 0 0 .4rem; font-size: .72rem; text-transform: uppercase; letter-spacing: .09em; color: var(--ink-soft); font-weight: 700; }
.prompt { margin: 0; font-size: clamp(1.5rem, 7vw, 2.3rem); font-weight: 700; line-height: 1.2; overflow-wrap: break-word; }
.prompt.answer { color: var(--good); }
.reveal { margin-top: .75rem; background: var(--good-bg); border-radius: var(--radius); padding: 1.2rem; text-align: center; }

#answer-form { margin-top: 1rem; }
#answer {
  width: 100%; font: inherit; font-size: 1.25rem; text-align: center;
  padding: .9rem 1rem; border-radius: 12px; border: 2px solid var(--line);
  background: var(--surface); color: var(--ink);
}
#answer:focus { outline: none; border-color: var(--brand); }
#check { width: 100%; margin-top: .7rem; }

.accents { display: flex; flex-wrap: wrap; gap: .4rem; justify-content: center; margin-top: .7rem; }
.accents button {
  min-width: 2.6rem; padding: .5rem .2rem; font-size: 1.1rem; font-weight: 500;
  background: var(--surface-2); border-color: transparent;
}

.feedback { margin-top: 1rem; padding: 1rem; border-radius: var(--radius); }
.feedback.ok { background: var(--good-bg); color: var(--good); }
.feedback.near { background: var(--warn-bg); color: var(--warn); }
.feedback.no { background: var(--bad-bg); color: var(--bad); }
.feedback strong { display: block; font-size: 1.05rem; }
.feedback .correction { color: var(--ink); font-size: 1.1rem; font-weight: 700; margin-top: .3rem; }
.feedback .typed { color: var(--ink-soft); font-size: .85rem; }
.feedback .fb-actions { display: flex; flex-wrap: wrap; gap: .5rem; margin-top: .8rem; }

/* --- resultat --------------------------------------------------------- */
.score { background: var(--surface); border-radius: var(--radius); box-shadow: var(--shadow); padding: 1.6rem; text-align: center; }
.score .big-number { font-size: 3rem; font-weight: 800; line-height: 1; }
.score p { margin: .4rem 0 0; color: var(--ink-soft); }

table.sheet { width: 100%; border-collapse: collapse; background: var(--surface); border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow); margin: .5rem 0 1.5rem; }
table.sheet caption { text-align: left; font-weight: 700; padding: .6rem .2rem; }
table.sheet th { text-align: left; font-size: .72rem; text-transform: uppercase; letter-spacing: .06em; color: var(--ink-soft); padding: .5rem .8rem; background: var(--surface-2); }
table.sheet td { padding: .55rem .8rem; border-top: 1px solid var(--line); vertical-align: top; }
table.sheet tr.missed td { background: var(--bad-bg); }
table.sheet td.num { color: var(--ink-soft); width: 2.2rem; }

/* --- egna ord --------------------------------------------------------- */
.new-list { display: flex; gap: .5rem; margin-bottom: 1rem; }
.new-list input, .word-row input, .bulk textarea {
  font: inherit; padding: .6rem .7rem; border-radius: 10px;
  border: 1px solid var(--line); background: var(--surface); color: var(--ink); min-width: 0;
}
.new-list input { flex: 1; }
.manage-list { background: var(--surface); border-radius: var(--radius); box-shadow: var(--shadow); padding: .9rem; margin-bottom: 1rem; }
.manage-list header { display: flex; align-items: center; gap: .5rem; margin-bottom: .6rem; }
.manage-list header strong { flex: 1; font-size: 1.05rem; }
.word-row { display: grid; grid-template-columns: 1fr 1fr auto; gap: .4rem; margin-bottom: .4rem; align-items: center; }
.word-row input { width: 100%; }
.bulk { margin-top: .7rem; }
.bulk textarea { width: 100%; min-height: 5rem; resize: vertical; font-size: .95rem; }
.bulk .hint { font-size: .78rem; color: var(--ink-soft); margin: .3rem 0 .5rem; }

.banner { border-radius: var(--radius); padding: .8rem 1rem; margin-bottom: 1rem; font-size: .92rem; }
.banner.new { background: var(--good-bg); color: var(--good); font-weight: 600; }
.banner.err { background: var(--bad-bg); color: var(--bad); }

.toast {
  position: fixed; left: 50%; bottom: 1.2rem; transform: translateX(-50%);
  background: var(--ink); color: var(--bg); padding: .7rem 1.1rem; border-radius: 999px;
  font-size: .9rem; font-weight: 600; box-shadow: var(--shadow); z-index: 20; max-width: 90vw;
}

.spin { animation: spin 1s linear infinite; display: inline-block; }
@keyframes spin { to { transform: rotate(360deg); } }

@media print {
  .topbar, .no-print, .actions { display: none !important; }
  body { background: #fff; color: #000; padding: 0; }
  table.sheet { box-shadow: none; border: 1px solid #999; }
  table.sheet th, table.sheet td { border-color: #999; }
}