/* Wamikas läxor — "Klossar": flat colour blocks, heavy type, hard edges.
   Print overrides live in print.css, which flattens every block to white. */

:root {
  --bg: #fbf6ec;
  --card: #fffdf7;
  --ink: #17150f;
  --ink-soft: #6d6555;
  --line: #ded4bf;
  /* The blocky outline. Must stay visible in both themes, so it tracks the ink. */
  --edge: #17150f;
  --edge-w: 2.5px;

  --accent: #2f6f4e;
  --accent-soft: #e4efe7;
  --on-accent: #fffdf7;
  --ok: #1f7a44;   --ok-bg: #e2f1e8;
  --bad: #b3341f;  --bad-bg: #fbe7e2;
  --focus: #17150f;

  /* Subject hue (text/rules) and its solid block, with ink that sits on it. */
  --math: #2c5fa8; --math-bg: #e6eef9; --math-block: #2c5fa8; --math-on: #ffffff;
  --sv:   #b3541e; --sv-bg:   #fbeee4; --sv-block:   #9c4718; --sv-on:   #ffffff;
  --en:   #6a3fa0; --en-bg:   #efe8f8; --en-block:   #6a3fa0; --en-on:   #ffffff;
  --no:   #2f7a4d; --no-bg:   #e4f2e9; --no-block:   #256440; --no-on:   #ffffff;
  --so:   #9a6a12; --so-bg:   #f8efdc; --so-block:   #855a0d; --so-on:   #ffffff;

  --radius: 2px;
  --sheet: 46rem;
}

/* Dark: keep the blocks, drop the glare. A saturated fill that reads well on
   cream becomes a headlight on near-black, so blocks invert to a deep tint
   with the light hue as ink. */
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #14130f;
    --card: #1d1b16;
    --ink: #f0ebe0;
    --ink-soft: #a49c8b;
    --line: #35322a;
    --edge: #f0ebe0;
    --accent: #7cc39a;
    --accent-soft: #1f2b23;
    --on-accent: #14130f;
    --ok: #7cc39a;  --ok-bg: #1c2a21;
    --bad: #e8907c; --bad-bg: #33211c;
    --focus: #f0ebe0;
    --math: #8fb6ec; --math-bg: #1a2331; --math-block: #1a2331; --math-on: #8fb6ec;
    --sv:   #eaa377; --sv-bg:   #2e2118; --sv-block:   #2e2118; --sv-on:   #eaa377;
    --en:   #bda3e8; --en-bg:   #241e30; --en-block:   #241e30; --en-on:   #bda3e8;
    --no:   #86c8a1; --no-bg:   #1a2a20; --no-block:   #1a2a20; --no-on:   #86c8a1;
    --so:   #d9b565; --so-bg:   #2d2617; --so-block:   #2d2617; --so-on:   #d9b565;
  }
}

/* Same tokens again for an explicit choice, so the switcher wins over the
   system preference in both directions. */
:root[data-theme="dark"] {
  --bg: #14130f;
  --card: #1d1b16;
  --ink: #f0ebe0;
  --ink-soft: #a49c8b;
  --line: #35322a;
  --edge: #f0ebe0;
  --accent: #7cc39a;
  --accent-soft: #1f2b23;
  --on-accent: #14130f;
  --ok: #7cc39a;  --ok-bg: #1c2a21;
  --bad: #e8907c; --bad-bg: #33211c;
  --focus: #f0ebe0;
  --math: #8fb6ec; --math-bg: #1a2331; --math-block: #1a2331; --math-on: #8fb6ec;
  --sv:   #eaa377; --sv-bg:   #2e2118; --sv-block:   #2e2118; --sv-on:   #eaa377;
  --en:   #bda3e8; --en-bg:   #241e30; --en-block:   #241e30; --en-on:   #bda3e8;
  --no:   #86c8a1; --no-bg:   #1a2a20; --no-block:   #1a2a20; --no-on:   #86c8a1;
  --so:   #d9b565; --so-bg:   #2d2617; --so-block:   #2d2617; --so-on:   #d9b565;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  padding: 1.5rem 1rem 4rem;
  background: var(--bg);
  color: var(--ink);
  font: 400 17px/1.6 Chivo, "Helvetica Neue", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  -webkit-text-size-adjust: 100%;
}

.sheet { max-width: var(--sheet); margin: 0 auto; }

h1 { font-size: 2.1rem; font-weight: 900; line-height: 1.02; letter-spacing: -.03em; margin: 0 0 .3rem; }
h2 { font-size: 1.2rem; font-weight: 900; letter-spacing: -.02em; margin: 0; }
h3 { font-size: 1rem; font-weight: 700; margin: 0 0 .4rem; }
h4 { font-size: 1rem; font-weight: 700; margin: 0 0 .5rem; }

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

/* ---------- Cards, doors, subjects ---------- */

.cards { list-style: none; margin: 0; padding: 0; display: grid; gap: .85rem; }
.cards--grid { grid-template-columns: repeat(auto-fill, minmax(11rem, 1fr)); }
.cards--doors { gap: 1rem; }

.card {
  display: flex; align-items: stretch;
  background: var(--card);
  border: var(--edge-w) solid var(--edge);
  border-radius: var(--radius);
  overflow: hidden;
}
.card--today { box-shadow: 5px 5px 0 var(--accent); }

.card-link {
  flex: 1; display: grid; gap: .3rem;
  padding: 1rem 1.15rem; text-decoration: none; color: inherit;
}
.card-link:hover { background: var(--accent-soft); }
.card-date { font-size: .82rem; font-weight: 700; color: var(--ink-soft); }
.card-date em { color: var(--accent); font-style: normal; }
.card-title { font-weight: 700; }
.card-sub { font-size: .88rem; color: var(--ink-soft); }

/* Doors: each one is a solid block of its own colour. */
.card--door .card-link { padding: 1.35rem 1.35rem; gap: .35rem; }
.card--door .card-link:hover { filter: brightness(1.06); }
.door-title { font-size: 1.45rem; font-weight: 900; letter-spacing: -.025em; line-height: 1.05; }

.door--learn { background: var(--math-block); }
.door--learn .card-link, .door--learn .door-title { color: var(--math-on); }
.door--learn .card-sub { color: var(--math-on); }

.door--today { background: var(--no-block); }
.door--today .card-link, .door--today .door-title { color: var(--no-on); }
.door--today .card-sub { color: var(--no-on); }
.door--today.is-today { box-shadow: 5px 5px 0 var(--edge); }

.door--test { background: var(--so-block); }
.door--test .card-link, .door--test .door-title { color: var(--so-on); }
.door--test .card-sub { color: var(--so-on); }

.chips { display: flex; flex-wrap: wrap; gap: .35rem; }
.chip {
  font-size: .74rem; font-weight: 700; letter-spacing: .02em;
  padding: .2rem .55rem; border-radius: var(--radius);
}
.chip--math { background: var(--math-block); color: var(--math-on); }
.chip--sv   { background: var(--sv-block);   color: var(--sv-on); }
.chip--en   { background: var(--en-block);   color: var(--en-on); }
.chip--no   { background: var(--no-block);   color: var(--no-on); }
.chip--so   { background: var(--so-block);   color: var(--so-on); }
.card--subject .card-link { gap: .45rem; justify-items: start; }

.card-pdf {
  display: grid; place-items: center; padding: 0 1rem;
  border-left: var(--edge-w) solid var(--edge);
  font-size: .74rem; font-weight: 900; letter-spacing: .06em;
  color: var(--ink-soft); text-decoration: none;
}
.card-pdf:hover { background: var(--accent); color: var(--on-accent); }

.badge {
  font-size: .72rem; font-weight: 700;
  padding: .2rem .55rem; border-radius: var(--radius);
  background: var(--line); color: var(--ink-soft);
}
.badge--started { background: var(--so-bg); color: var(--so); }
.badge--all { background: var(--ok-bg); color: var(--ok); }

.empty { color: var(--ink-soft); }
code { background: var(--accent-soft); padding: .1rem .35rem; border-radius: var(--radius); font-size: .9em; }

/* ---------- Page heads ---------- */

.site-head, .day-head { margin-bottom: 1.6rem; }
.tagline, .day-meta { color: var(--ink-soft); margin: 0; font-weight: 700; }
.back { font-size: .85rem; font-weight: 700; text-decoration: none; display: inline-block; margin-bottom: .7rem; }
.back:hover { text-decoration: underline; }
.day-note {
  margin: .9rem 0 0; padding: .8rem 1rem;
  background: var(--card); border: var(--edge-w) solid var(--edge); border-radius: var(--radius);
  font-size: .92rem;
}

/* ---------- Subject sections ---------- */

.subject {
  background: var(--card);
  border: var(--edge-w) solid var(--edge);
  border-radius: var(--radius);
  padding: 1.25rem;
  margin-bottom: 1.25rem;
}
.subject-head {
  display: flex; align-items: baseline; gap: .6rem; flex-wrap: wrap;
  margin: -1.25rem -1.25rem 1.15rem;
  padding: .7rem 1.25rem;
  border-bottom: var(--edge-w) solid var(--edge);
}
.subject--math .subject-head { background: var(--math-block); }
.subject--sv   .subject-head { background: var(--sv-block); }
.subject--en   .subject-head { background: var(--en-block); }
.subject--no   .subject-head { background: var(--no-block); }
.subject--so   .subject-head { background: var(--so-block); }
.subject--math .subject-head h2, .subject--math .subject-sub { color: var(--math-on); }
.subject--sv   .subject-head h2, .subject--sv   .subject-sub { color: var(--sv-on); }
.subject--en   .subject-head h2, .subject--en   .subject-sub { color: var(--en-on); }
.subject--no   .subject-head h2, .subject--no   .subject-sub { color: var(--no-on); }
.subject--so   .subject-head h2, .subject--so   .subject-sub { color: var(--so-on); }
.subject-sub { margin: 0; font-size: .9rem; font-weight: 400; opacity: .85; }

.intro { margin: 0 0 1rem; color: var(--ink-soft); }

/* ---------- Exercises ---------- */

.ex { margin: 0 0 1.7rem; }
.ex:last-child { margin-bottom: 0; }
.q { margin: 0 0 .4rem; }
.qn { font-weight: 900; color: var(--ink-soft); margin-right: .2rem; }
.instruction { margin: 0 0 .6rem; font-weight: 700; }
.gloss { margin: .2rem 0 .5rem; font-size: .85rem; color: var(--ink-soft); font-style: italic; }

.passage {
  background: var(--bg);
  border: 1.5px solid var(--line);
  border-radius: var(--radius);
  padding: 1rem 1.1rem; margin-bottom: 1.25rem;
}
.passage p { margin: 0 0 .7rem; }
.passage p:last-child { margin-bottom: 0; }

input.ans, select.ans, textarea.free {
  font: inherit; color: inherit;
  background: var(--bg);
  border: 2px solid var(--edge);
  border-radius: var(--radius);
  padding: .4rem .55rem;
}
input.ans:focus, select.ans:focus, textarea.free:focus,
.opt:focus-visible, .btn:focus-visible, .themebtn:focus-visible {
  outline: 3px solid var(--focus); outline-offset: 2px;
}
input.ans { width: 6.5rem; }
input.ans-num { width: 5rem; text-align: center; }
input.ans-inline { width: 8rem; }
input.ans-ord { width: 2.75rem; text-align: center; }
select.ans-select { max-width: 100%; }
textarea.free { width: 100%; resize: vertical; }
.unit { color: var(--ink-soft); margin-left: .35rem; font-size: .9rem; font-weight: 700; }

input.ans.is-ok, select.ans.is-ok { border-color: var(--ok); background: var(--ok-bg); }
input.ans.is-bad, select.ans.is-bad { border-color: var(--bad); background: var(--bad-bg); }
.spellhint { margin-left: .5rem; font-size: .82rem; color: var(--ok); }
.spellhint strong { font-weight: 900; }

.calc-grid {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(13rem, 1fr));
  gap: .85rem 1rem; margin: 0; padding-left: 1.4rem;
}
.calc-item { padding-left: .2rem; }
.calc-q { font-variant-numeric: tabular-nums; margin-right: .3rem; }

.options { list-style: none; margin: 0; padding: 0; display: grid; gap: .4rem; }
.opt {
  font: inherit; text-align: left; width: 100%;
  padding: .6rem .85rem;
  background: var(--bg); color: inherit;
  border: 2px solid var(--edge); border-radius: var(--radius);
  cursor: pointer;
}
.opt:hover { background: var(--accent-soft); }
.opt.picked { background: var(--accent); color: var(--on-accent); font-weight: 700; }
.opt.is-ok { border-color: var(--ok); background: var(--ok-bg); color: var(--ink); }
.opt.is-bad { border-color: var(--bad); background: var(--bad-bg); color: var(--ink); }
.verdict { font-size: .85rem; font-weight: 700; }
.verdict.ok { color: var(--ok); }
.verdict.bad { color: var(--bad); }

.match-web { margin: 0; padding-left: 1.4rem; display: grid; gap: .5rem; }
.match-row { display: flex; align-items: center; gap: .6rem; flex-wrap: wrap; }
.m-term { min-width: 7rem; font-weight: 700; }
.order-list { list-style: none; margin: 0; padding: 0; display: grid; gap: .5rem; }
.order-row { display: flex; align-items: center; gap: .7rem; }

/* ---------- Teaching blocks ---------- */

.teach {
  background: var(--card);
  border: var(--edge-w) solid var(--edge);
  border-radius: var(--radius);
  padding: 1.1rem 1.15rem;
  margin: 0 0 1.35rem;
  box-shadow: 5px 5px 0 var(--accent-soft);
}
.teach h4 { margin: 0 0 .7rem; display: flex; align-items: center; gap: .5rem; flex-wrap: wrap; }
.teach-tag {
  font-size: .68rem; font-weight: 900; letter-spacing: .08em; text-transform: uppercase;
  background: var(--accent); color: var(--on-accent);
  padding: .22rem .55rem; border-radius: var(--radius);
}
.teach-steps { margin: 0; padding-left: 1.3rem; display: grid; gap: .3rem; }
.teach-steps li { padding-left: .15rem; }

.fig-wrap { margin: .9rem 0 .3rem; }
.fig-wrap--multi { display: grid; gap: .5rem; }
svg.fig { display: block; width: auto; max-width: 100%; height: auto; color: var(--ink); }
svg.fig .shade { fill: var(--card); }
svg.fig .shade-on { fill: var(--accent); }
svg.fig .fig-label { fill: currentColor; font-size: 13px; font-family: inherit; }
svg.fig .fig-num { fill: currentColor; font-size: 15px; font-weight: 700; font-family: inherit; }
/* A number sitting inside a filled cell needs the on-accent ink, not the page's. */
svg.fig .fig-num--filled { fill: var(--on-accent); }

.worked {
  margin-top: .9rem; padding: .75rem .9rem;
  background: var(--bg); border: 1.5px solid var(--line); border-radius: var(--radius);
}
.worked-q { margin: 0 0 .4rem; font-weight: 900; }
.worked-steps { margin: 0; padding-left: 1.3rem; display: grid; gap: .25rem; }

/* ---------- Buttons and status ---------- */

.actions { display: flex; gap: .6rem; flex-wrap: wrap; margin-top: 1.5rem; }
.btn {
  font: inherit; font-weight: 700;
  padding: .6rem 1.1rem; border-radius: var(--radius); cursor: pointer;
  background: var(--accent); color: var(--on-accent); border: 2px solid var(--edge);
  text-decoration: none; display: inline-block;
}
.btn:hover { filter: brightness(1.08); }
.btn-ghost { background: var(--card); color: var(--ink); }
.btn-ghost:hover { background: var(--accent-soft); }
.btn-sm { padding: .5rem .9rem; font-size: .9rem; }

.score {
  margin-top: 1.25rem; padding: 1rem 1.15rem;
  border-radius: var(--radius); background: var(--card);
  border: var(--edge-w) solid var(--edge); font-weight: 700;
}
.score.all-right { border-color: var(--ok); background: var(--ok-bg); color: var(--ok); }
.score-note { display: block; font-weight: 400; color: var(--ink-soft); margin-top: .3rem; font-size: .9rem; }
.score.all-right .score-note { color: inherit; }
.sync { margin: .5rem 0 0; font-size: .8rem; color: var(--ink-soft); }
.sync--bad { color: var(--bad); font-weight: 700; }

.resume {
  background: var(--card);
  border: var(--edge-w) solid var(--edge);
  border-radius: var(--radius);
  padding: 1rem 1.15rem;
  margin: 0 0 1.5rem;
  box-shadow: 5px 5px 0 var(--accent-soft);
}
.resume-text { margin: 0 0 .8rem; }
.resume-actions { display: flex; gap: .6rem; flex-wrap: wrap; }

.stickybar {
  position: fixed; left: 0; right: 0; bottom: 0; z-index: 20;
  display: flex; align-items: center; gap: .75rem;
  padding: .6rem 1rem calc(.6rem + env(safe-area-inset-bottom));
  background: var(--card);
  border-top: var(--edge-w) solid var(--edge);
}
.stickybar-status {
  font-size: .85rem; font-weight: 700; color: var(--ink-soft);
  min-width: 0; flex: 1; overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}
.stickybar-status.is-saved { color: var(--ok); }
.stickybar-buttons { display: flex; gap: .5rem; flex: none; order: -1; }
body:has(.stickybar:not([hidden])) { padding-bottom: 6rem; }

.pooled { margin-bottom: 1.5rem; }
.pooled:last-child { margin-bottom: 0; }

/* ---------- Answer key, parent links, theme ---------- */

.answer-key { margin-top: 2rem; }
.key-note { font-weight: 400; font-size: .85rem; color: var(--ink-soft); }
.key-block { margin-top: 1rem; }
.key-list { list-style: none; margin: 0; padding: 0; display: grid; gap: .3rem; font-size: .9rem; }

.parent-links { margin-top: 2.5rem; font-size: .78rem; color: var(--ink-soft); }
.parent-links a { color: var(--ink-soft); margin-right: .1rem; }
#backup-status { display: block; margin-top: .4rem; color: var(--ok); }
#backup-status.backup-status--bad { color: var(--bad); font-weight: 700; }

.themebar { max-width: var(--sheet); margin: 0 auto .75rem; display: flex; justify-content: flex-end; gap: .3rem; }
.themebtn {
  font: inherit; font-size: .74rem; font-weight: 700; letter-spacing: .04em;
  padding: .32rem .6rem;
  color: var(--ink-soft); background: transparent;
  border: 2px solid var(--line); border-radius: var(--radius); cursor: pointer;
}
.themebtn:hover { color: var(--ink); border-color: var(--edge); }
.themebtn[aria-pressed="true"] { background: var(--edge); color: var(--bg); border-color: var(--edge); }

@media (max-width: 480px) {
  body { padding: 1rem .75rem 3rem; }
  h1 { font-size: 1.8rem; }
  .subject { padding: 1rem; }
  .subject-head { margin: -1rem -1rem 1rem; padding: .65rem 1rem; }
  .calc-grid { grid-template-columns: repeat(auto-fill, minmax(10rem, 1fr)); }
  .stickybar { padding-left: .75rem; padding-right: .75rem; }
  .stickybar-status { font-size: .8rem; }
}