/* Axon Learning brand (brand/AXON_BRAND.md). Fonts are bundled in brand/fonts so the page works offline. */
@font-face { font-family: "Nunito"; font-weight: 600; font-display: swap; src: url("/brand/fonts/Nunito-SemiBold.ttf") format("truetype"); }
@font-face { font-family: "Nunito"; font-weight: 700; font-display: swap; src: url("/brand/fonts/Nunito-Bold.ttf") format("truetype"); }
@font-face { font-family: "Nunito"; font-weight: 800; font-display: swap; src: url("/brand/fonts/Nunito-ExtraBold.ttf") format("truetype"); }
@font-face { font-family: "Nunito"; font-weight: 900; font-display: swap; src: url("/brand/fonts/Nunito-Black.ttf") format("truetype"); }
@font-face { font-family: "Atkinson Hyperlegible"; font-weight: 400; font-display: swap; src: url("/brand/fonts/AtkinsonHyperlegible-Regular.ttf") format("truetype"); }
@font-face { font-family: "Atkinson Hyperlegible"; font-weight: 700; font-display: swap; src: url("/brand/fonts/AtkinsonHyperlegible-Bold.ttf") format("truetype"); }
@font-face { font-family: "JetBrains Mono"; font-weight: 500; font-display: swap; src: url("/brand/fonts/JetBrainsMono-Medium.ttf") format("truetype"); }
@font-face { font-family: "JetBrains Mono"; font-weight: 700; font-display: swap; src: url("/brand/fonts/JetBrainsMono-Bold.ttf") format("truetype"); }

:root {
  --bg: #f3f8f5; --surface: #ffffff; --surface-2: #edf6f1;
  --ink: #1f444c; --ink-soft: #3d6168; --muted: #58757b; --line: #d3e5dc;
  --mint: #b1dec0; --peach: #fbd3a5; --peach-soft: #fdeedd; --turquoise: #62c7bd;
  --accent: #1c8a80;
  --font-display: "Nunito", "Varela Round", system-ui, sans-serif;
  --font-body: "Atkinson Hyperlegible", system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-data: "JetBrains Mono", ui-monospace, Menlo, monospace;
  --danger: #b42318; --danger-soft: #fdecea;
  --shadow: 0 1px 2px rgba(31, 68, 76, .06), 0 6px 18px rgba(31, 68, 76, .06);
  --radius: 16px;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #0f1f23; --surface: #15292e; --surface-2: #1a3237; --ink: #e4f1ed; --ink-soft: #b8d3cd; --muted: #97b4b0; --line: #28444a;
    --mint: #8fcfab; --peach: #f3c48e; --peach-soft: #3a2d20; --turquoise: #62c7bd; --accent: #62c7bd; color-scheme: dark;
    --danger: #ff8a80; --danger-soft: #3b1f1f;
    --shadow: 0 1px 2px rgba(0, 0, 0, .3), 0 6px 20px rgba(0, 0, 0, .22);
  }
}
:root[data-theme="dark"] {
  --bg: #0f1f23; --surface: #15292e; --surface-2: #1a3237; --ink: #e4f1ed; --ink-soft: #b8d3cd; --muted: #97b4b0; --line: #28444a;
  --mint: #8fcfab; --peach: #f3c48e; --peach-soft: #3a2d20; --turquoise: #62c7bd; --accent: #62c7bd; color-scheme: dark;
  --danger: #ff8a80; --danger-soft: #3b1f1f;
  --shadow: 0 1px 2px rgba(0, 0, 0, .3), 0 6px 20px rgba(0, 0, 0, .22);
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }
html { font-size: 17px; }
body {
  margin: 0; min-height: 100vh; display: flex; flex-direction: column;
  background: var(--bg); color: var(--ink);
  font: 400 1rem/1.5 var(--font-body);
}
button, input, select { font: inherit; color: inherit; }
:focus-visible { outline: 3px solid var(--accent); outline-offset: 2px; }
.mono { font-family: var(--font-data); }
.muted { color: var(--muted); }
.small { font-size: .88rem; }
.hint { color: var(--muted); margin: 6px 0; }
.eyebrow { font: 700 .72rem/1 var(--font-data); letter-spacing: .08em; text-transform: uppercase; color: var(--accent); }

/* ── masthead ── */
.masthead {
  display: flex; align-items: center; gap: 18px; padding: 12px 28px;
  background: var(--surface); border-bottom: 1px solid var(--line);
}
.brand { display: inline-flex; align-items: center; gap: 10px; text-decoration: none; color: var(--ink); }
.brand-mark { width: 44px; height: 44px; border-radius: 50%; flex: none; }
.brand-word { display: grid; line-height: 1; }
.brand-axon { font: 900 22px/1 var(--font-display); letter-spacing: .06em; }
.brand-learning { font: 700 10.5px/1 var(--font-display); letter-spacing: .34em; margin-top: 4px; color: var(--ink-soft); }
.masthead-rule { width: 1px; height: 34px; background: var(--line); }
.tool-name { margin: 0; font: 800 1.35rem/1.2 var(--font-display); }
.masthead-end { margin-left: auto; display: flex; align-items: center; gap: 12px; }
.subject-picker { display: flex; align-items: center; gap: 10px; }
.subject-picker select { min-width: 260px; cursor: pointer; }

select, .text-input, .num-input {
  border: 1.5px solid var(--line); border-radius: 12px; background: var(--surface); color: var(--ink);
  padding: 9px 12px; min-height: 46px;
}
select:hover, .text-input:hover, .num-input:hover { border-color: var(--muted); }
select:focus-visible, .text-input:focus-visible, .num-input:focus-visible { outline: 3px solid var(--accent); outline-offset: 0; border-color: var(--accent); }

.icon-btn {
  width: 42px; height: 42px; flex: none; display: inline-grid; place-items: center; cursor: pointer;
  border: 1.5px solid var(--line); border-radius: 50%; background: var(--surface); color: var(--ink);
}
.icon-btn:hover:not(:disabled) { border-color: var(--accent); color: var(--accent); }
.icon-btn:disabled { opacity: .35; cursor: default; }
.icon-btn.small { width: 36px; height: 36px; font-size: .9rem; }

/* ── layout ── */
.shell {
  flex: 1; width: 100%; max-width: 1600px; margin: 0 auto; padding: 24px 28px 40px;
  display: grid; grid-template-columns: minmax(300px, 390px) minmax(0, 1fr); gap: 24px; align-items: start;
}
.work { display: flex; flex-direction: column; gap: 20px; min-width: 0; }
.card, .topics-step {
  background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius);
  box-shadow: var(--shadow); padding: 20px 22px;
}
.topics-step {
  position: sticky; top: 16px; max-height: calc(100vh - 32px);
  display: flex; flex-direction: column; padding: 18px 16px 10px;
}
.step-head { display: flex; align-items: center; gap: 12px; margin-bottom: 14px; }
.step-head h2 { margin: 0; font: 800 1.3rem/1.2 var(--font-display); }
.step-num {
  width: 34px; height: 34px; flex: none; display: grid; place-items: center; border-radius: 50%;
  background: var(--ink); color: var(--bg); font: 900 1.05rem/1 var(--font-display);
}
.badge {
  font: 700 .72rem/1 var(--font-data); letter-spacing: .08em; text-transform: uppercase;
  background: var(--peach-soft); color: var(--accent); padding: 7px 10px; border-radius: 999px;
}
.link-btn {
  margin-left: auto; border: 0; background: none; cursor: pointer; padding: 6px 8px; border-radius: 8px;
  color: var(--accent); font: 800 .95rem var(--font-display);
}
.link-btn:hover { background: var(--surface-2); }

/* ── 1 topics ── */
.search {
  display: flex; align-items: center; gap: 8px; padding: 0 12px; color: var(--muted);
  border: 1.5px solid var(--line); border-radius: 12px; background: var(--surface-2);
}
.search:focus-within { border-color: var(--accent); outline: 3px solid var(--accent); outline-offset: 0; }
.search input { flex: 1; min-width: 0; border: 0; outline: 0; background: transparent; color: var(--ink); padding: 11px 0; }
.selected-line { margin: 10px 4px 4px; font-size: .92rem; color: var(--ink-soft); }
.strands { flex: 1; min-height: 0; overflow-y: auto; margin: 0 -6px; padding: 0 6px 6px; }
.strand h3 { margin: 16px 0 4px 6px; font: 700 .72rem/1.3 var(--font-data); letter-spacing: .08em; text-transform: uppercase; color: var(--accent); }
.topic { display: flex; align-items: center; min-height: 42px; border-radius: 10px; }
.topic:hover { background: var(--surface-2); }
.topic label { flex: 1; min-width: 0; display: flex; align-items: center; gap: 10px; padding: 6px 8px; cursor: pointer; }
.topic:not(.has-subs) > label { margin-left: 30px; }
.topic.sub > label { margin-left: 56px; }
.topic input { width: 19px; height: 19px; flex: none; margin: 0; accent-color: var(--accent); }
.name { flex: 1; min-width: 0; }
.tid { font: 500 .82rem var(--font-data); color: var(--muted); margin-right: 3px; }
.count { font: 500 .78rem/1.6 var(--font-data); color: var(--ink-soft); background: var(--surface-2); border-radius: 999px; padding: 0 8px; }
.topic:hover .count { background: var(--surface); }
.count.none { color: var(--muted); background: transparent; }
.toggle {
  width: 30px; height: 30px; flex: none; display: grid; place-items: center; cursor: pointer;
  border: 0; border-radius: 8px; background: none; color: var(--muted);
}
.toggle:hover { color: var(--ink); background: var(--line); }
.toggle svg { transition: transform .15s; }
.toggle[aria-expanded="true"] svg { transform: rotate(90deg); }

/* ── 2 target ── */
.fields { display: flex; flex-wrap: wrap; align-items: flex-end; gap: 16px 22px; }
.field { display: flex; flex-direction: column; gap: 6px; min-width: 0; margin: 0; padding: 0; border: 0; }
.field.grow { flex: 1 1 280px; }
.label { padding: 0; font: 800 .95rem/1.2 var(--font-display); color: var(--ink); }
.optional { margin-left: 6px; font: 500 .7rem var(--font-data); letter-spacing: .06em; text-transform: uppercase; color: var(--muted); }
.segmented { display: inline-flex; padding: 3px; border: 1.5px solid var(--line); border-radius: 12px; background: var(--surface-2); }
.segmented label { position: relative; }
.segmented input { position: absolute; inset: 0; opacity: 0; margin: 0; cursor: pointer; }
.segmented span { display: block; padding: 9px 16px; border-radius: 9px; font: 800 .95rem/1.2 var(--font-display); color: var(--ink-soft); }
.segmented input:checked + span { background: var(--ink); color: var(--bg); }
.segmented input:focus-visible + span { outline: 3px solid var(--accent); outline-offset: 1px; }
.num-input { width: 130px; font: 700 1.2rem var(--font-data); }
.text-input { width: 100%; }
.check { display: flex; align-items: flex-start; gap: 10px; margin-top: 18px; cursor: pointer; }
.check input { width: 20px; height: 20px; margin: 3px 0 0; flex: none; accent-color: var(--accent); }
.actions { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 16px; }
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px; min-height: 48px; padding: 10px 20px;
  border: 1.5px solid var(--line); border-radius: 12px; background: var(--surface); color: var(--ink);
  font: 800 1rem/1.1 var(--font-display); text-decoration: none; cursor: pointer;
}
.btn:hover:not(:disabled) { border-color: var(--accent); }
.btn.primary { background: var(--ink); border-color: var(--ink); color: var(--bg); }
.btn.primary:hover:not(:disabled) { background: var(--ink-soft); border-color: var(--ink-soft); }
.btn.ghost { background: transparent; border-color: transparent; color: var(--ink-soft); }
.btn.ghost:hover:not(:disabled) { background: var(--surface-2); border-color: transparent; }
.btn:disabled { opacity: .42; cursor: not-allowed; }

/* ── 3 questions ── */
.filters {
  display: flex; flex-wrap: wrap; align-items: flex-end; gap: 12px 14px; margin-bottom: 16px; padding: 14px;
  background: var(--surface-2); border-radius: 14px;
}
.filter { display: flex; flex-direction: column; gap: 6px; }
.filter select { min-width: 150px; }
.shown { margin-left: auto; align-self: center; color: var(--muted); font-size: .92rem; }
.cards { display: grid; grid-template-columns: repeat(auto-fill, minmax(272px, 1fr)); gap: 16px; }
.qcard {
  display: flex; flex-direction: column; gap: 10px; padding: 12px 14px 14px;
  background: var(--surface); border: 1.5px solid var(--line); border-radius: 14px;
  transition: border-color .15s, background-color .15s;
}
.qcard:hover { border-color: var(--muted); }
.qcard.ticked { border-color: var(--accent); background: var(--surface-2); box-shadow: inset 0 0 0 1px var(--accent); }
.qcard-head { display: flex; flex-wrap: wrap; align-items: center; gap: 6px 8px; }
.qcheck { flex: 1 1 auto; min-width: 0; display: flex; align-items: center; gap: 10px; cursor: pointer; }
.qcheck input { width: 22px; height: 22px; flex: none; margin: 0; accent-color: var(--accent); }
.src { font: 500 .9rem/1.3 var(--font-data); }
.src .paper { white-space: nowrap; }
.badges { display: flex; gap: 6px; margin-left: auto; }
.qmarks { white-space: nowrap; padding: 4px 10px; border-radius: 999px; background: var(--peach-soft); font: 700 .82rem var(--font-data); }
.qpos { padding: 4px 8px; border-radius: 999px; background: var(--accent); color: var(--surface); font: 700 .8rem var(--font-data); }
.thumb {
  position: relative; display: block; height: 240px; padding: 0; overflow: hidden; cursor: zoom-in;
  border: 1px solid var(--line); border-radius: 10px; background: #fff;
}
.thumb img { display: block; width: 100%; height: auto; }
.thumb::after { content: ""; position: absolute; inset: auto 0 0 0; height: 48px; background: linear-gradient(rgba(255, 255, 255, 0), #fff); pointer-events: none; }
.thumb-zoom {
  position: absolute; right: 8px; bottom: 8px; z-index: 1; width: 36px; height: 36px; display: grid; place-items: center;
  border-radius: 50%; background: #1f444c; color: #f3f8f5;
}
.thumb:hover .thumb-zoom { background: #1c8a80; }
.chips { display: flex; flex-wrap: wrap; gap: 6px; }
.chip {
  display: inline-flex; align-items: center; gap: 6px; padding: 5px 11px; cursor: pointer;
  border: 1.5px solid var(--line); border-radius: 999px; background: var(--surface); color: var(--ink);
  font: 700 .85rem/1.2 var(--font-data);
}
.chip:hover { border-color: var(--accent); }
.chip[aria-pressed="true"] { background: var(--ink); border-color: var(--ink); color: var(--bg); }
.chip-marks { font-weight: 500; opacity: .75; }
.linknote { display: flex; align-items: flex-start; gap: 6px; margin: 0; font-size: .9rem; color: var(--accent); }
.linknote svg { flex: none; margin-top: 3px; }
.qtopics { margin: 0; font-size: .88rem; color: var(--muted); }

.tray {
  position: sticky; bottom: 12px; z-index: 5; margin-top: 18px;
  display: flex; flex-wrap: wrap; align-items: center; gap: 12px 20px; padding: 14px 16px;
  background: var(--surface); border: 1.5px solid var(--ink); border-radius: 16px;
  box-shadow: 0 12px 32px rgba(15, 31, 35, .2);
}
.tally { flex: 1 1 240px; min-width: 0; }
.tally-line { display: flex; flex-wrap: wrap; align-items: baseline; gap: 4px 12px; }
.tally-num { font: 700 1.35rem/1.2 var(--font-data); }
.meter { height: 9px; margin-top: 8px; overflow: hidden; border-radius: 999px; background: var(--surface-2); border: 1px solid var(--line); }
.meter span { display: block; width: 0; height: 100%; background: var(--turquoise); transition: width .25s; }
.meter.done span { background: var(--accent); }
.meter.over span { background: var(--peach); }
.tray-actions { display: flex; flex-wrap: wrap; gap: 10px; }

/* ── 4 download ── */
.r-title { margin: 0 0 4px; font: 800 1.25rem/1.3 var(--font-display); }
.r-summary { margin: 0 0 14px; color: var(--ink-soft); }
.note { margin: 0 0 14px; padding: 10px 14px; border-radius: 12px; background: var(--peach-soft); }
.downloads { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 12px; }
.dl { display: flex; flex-direction: column; gap: 12px; padding: 16px; border: 1.5px solid var(--line); border-radius: 14px; background: var(--surface-2); }
.dl-links { display: flex; flex-wrap: wrap; gap: 10px; }
.used { margin-top: 16px; }
.used summary { cursor: pointer; font: 800 1rem var(--font-display); color: var(--ink-soft); }
.used ol { margin: 10px 0 0; padding-left: 24px; font-size: .92rem; }
.used li { margin: 4px 0; }
.flash { animation: flash 1.4s ease-out; }
@keyframes flash { from { box-shadow: 0 0 0 5px var(--turquoise); } to { box-shadow: var(--shadow); } }

/* ── dialogs and messages ── */
.dialog {
  width: min(760px, calc(100vw - 32px)); max-height: calc(100vh - 48px); padding: 0; overflow: auto;
  border: 0; border-radius: 18px; background: var(--surface); color: var(--ink);
  box-shadow: 0 24px 64px rgba(0, 0, 0, .35);
}
.dialog.zoom { width: min(1100px, calc(100vw - 32px)); }
.dialog::backdrop { background: rgba(15, 31, 35, .6); }
.dialog > * { margin-left: 22px; margin-right: 22px; }
.dialog-head {
  position: sticky; top: 0; z-index: 1; display: flex; align-items: center; justify-content: space-between; gap: 12px;
  margin: 0; padding: 18px 22px 10px; background: var(--surface);
}
.dialog-head h2 { margin: 0; font: 800 1.25rem/1.3 var(--font-display); }
.dialog-foot {
  position: sticky; bottom: 0; display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 12px;
  margin: 12px 0 0; padding: 14px 22px 18px; background: var(--surface); border-top: 1px solid var(--line);
}
.zoom-meta { margin-top: 0; color: var(--ink-soft); }
.zoom-img { overflow: auto; border: 1px solid var(--line); border-radius: 10px; background: #fff; }
.zoom-img img { display: block; width: 100%; height: auto; }
.order-list { display: flex; flex-direction: column; gap: 8px; padding: 0; list-style: none; }
.order-row {
  display: grid; grid-template-columns: 32px minmax(0, 1fr) auto auto; align-items: center; gap: 12px;
  padding: 10px 12px; border: 1.5px solid var(--line); border-radius: 12px;
}
.order-n { width: 30px; height: 30px; display: grid; place-items: center; border-radius: 50%; background: var(--ink); color: var(--bg); font: 900 .95rem var(--font-display); }
.order-what { display: flex; flex-direction: column; min-width: 0; }
.order-marks { font: 700 .9rem var(--font-data); white-space: nowrap; }
.order-btns { display: flex; gap: 4px; }
.toast {
  position: fixed; top: 16px; left: 50%; z-index: 50; transform: translateX(-50%);
  max-width: min(640px, calc(100vw - 32px)); margin: 0; padding: 12px 18px; border-radius: 12px;
  font-weight: 700; box-shadow: 0 12px 32px rgba(0, 0, 0, .25);
}
.toast.error { background: var(--danger-soft); color: var(--danger); border: 1.5px solid var(--danger); }
.toast.info { background: var(--ink); color: var(--bg); }

/* ── review ── */
.review-toggle { min-height: 42px; padding: 8px 16px; }
.review-toggle[aria-pressed="true"] { background: var(--ink); border-color: var(--ink); color: var(--bg); }
.rv-badge {
  min-width: 24px; padding: 3px 7px; border-radius: 999px; background: var(--peach); color: #1f444c;
  font: 700 .8rem/1 var(--font-data); text-align: center;
}
.review-screen {
  flex: 1; width: 100%; max-width: 1240px; margin: 0 auto; padding: 24px 28px 40px;
  display: flex; flex-direction: column; gap: 20px;
}
.rv-intro { margin: 0 0 14px; color: var(--ink-soft); max-width: 78ch; }
.rv-bar { display: flex; flex-wrap: wrap; align-items: center; gap: 12px 20px; }
.rv-status { flex: 1 1 260px; font: 700 1.05rem/1.4 var(--font-display); }
.rv-result { margin-top: 14px; padding: 12px 16px; border-radius: 12px; background: var(--surface-2); }
.rv-result ul { margin: 6px 0 0; padding-left: 22px; }
.rv-list { display: flex; flex-direction: column; gap: 18px; }
.rv-empty { margin: 0; padding: 22px; border-radius: var(--radius); background: var(--surface); border: 1px dashed var(--line); color: var(--ink-soft); }
.rv-card { padding: 18px 20px; }
.rv-card-head { display: flex; flex-wrap: wrap; align-items: center; gap: 8px 12px; margin-bottom: 12px; }
.rv-source { margin: 0; font: 800 1.15rem/1.3 var(--font-display); }
.rv-body { display: grid; grid-template-columns: minmax(0, 1.25fr) minmax(0, 1fr); gap: 22px; align-items: start; }
.rv-media { display: flex; flex-direction: column; gap: 10px; min-width: 0; }
.rv-tabs { display: inline-flex; align-self: flex-start; padding: 3px; border: 1.5px solid var(--line); border-radius: 12px; background: var(--surface-2); }
.rv-tab { border: 0; border-radius: 9px; background: none; padding: 7px 14px; cursor: pointer; font: 800 .92rem/1.2 var(--font-display); color: var(--ink-soft); }
.rv-tab[aria-pressed="true"] { background: var(--ink); color: var(--bg); }
.rv-img {
  display: block; max-height: 520px; overflow: auto; cursor: zoom-in;
  border: 1px solid var(--line); border-radius: 10px; background: #fff;
}
.rv-img img { display: block; width: 100%; height: auto; }
.rv-info { display: flex; flex-direction: column; gap: 14px; min-width: 0; }
.rv-info .eyebrow { margin: 0 0 8px; }
.rv-tags { display: grid; grid-template-columns: 96px minmax(0, 1fr); align-items: center; gap: 10px 8px; }
.rv-role { font: 800 .9rem var(--font-display); color: var(--ink-soft); }
.rv-chip {
  display: inline-flex; align-items: center; gap: 6px; padding: 5px 11px;
  border: 1.5px solid var(--line); border-radius: 999px; background: var(--surface); font-size: .92rem;
}
.rv-chip.main { background: var(--surface-2); border-color: var(--accent); }
.rv-chip .tid { margin: 0; }
.rv-chip-x { border: 0; background: none; padding: 0 0 0 4px; cursor: pointer; color: var(--muted); font-size: .85rem; }
.rv-chip-x:hover { color: var(--danger); }
.rv-about { margin: 0 0 8px; font: 800 1rem/1.45 var(--font-display); color: var(--ink-soft); }
.rv-reason { margin: 0; line-height: 1.55; }
.rv-actions { display: flex; flex-wrap: wrap; gap: 10px; }
.btn.danger { color: var(--danger); }
.btn.danger:hover:not(:disabled) { background: var(--danger-soft); }
.rv-editor { display: flex; flex-direction: column; gap: 14px; padding: 16px; border-radius: 14px; background: var(--surface-2); }
.rv-field { display: flex; flex-direction: column; gap: 8px; }
.rv-chosen { display: flex; flex-wrap: wrap; gap: 6px; }
.picker { position: relative; }
.picker .search { background: var(--surface); }
.picker-list {
  position: absolute; left: 0; right: 0; top: calc(100% + 4px); z-index: 10; max-height: 280px; overflow-y: auto;
  margin: 0; padding: 6px; list-style: none; background: var(--surface); border: 1.5px solid var(--line); border-radius: 12px;
  box-shadow: 0 12px 32px rgba(15, 31, 35, .2);
}
.picker-list li { padding: 7px 10px; border-radius: 8px; cursor: pointer; }
.picker-list li:hover, .picker-list li.active { background: var(--surface-2); }
.picker-list .picker-none { color: var(--muted); cursor: default; }
.rv-done { margin: 0; padding: 10px 14px; border-radius: 12px; background: var(--surface-2); font-weight: 700; }
.rv-card.done { opacity: .9; }
.rv-card.done .rv-media, .rv-card.done .rv-info > div:not(.rv-editor) { display: none; }
.rv-card.done .rv-body { grid-template-columns: minmax(0, 1fr); }
.rv-card.done.exclude .rv-done { background: var(--danger-soft); color: var(--danger); }

/* ── footer ── */
.site-footer {
  display: flex; justify-content: space-between; gap: 12px; padding: 16px 28px;
  border-top: 1px solid var(--line); background: var(--surface); color: var(--muted); font-size: .9rem;
}

@media (max-width: 1020px) {
  .shell { grid-template-columns: minmax(0, 1fr); padding: 16px; }
  .topics-step { position: static; max-height: none; }
  .strands { max-height: 60vh; }
  .review-screen { padding: 16px; }
  .rv-body { grid-template-columns: minmax(0, 1fr); }
}
@media (max-width: 640px) {
  .masthead { flex-wrap: wrap; gap: 12px; padding: 12px 16px; }
  .masthead-rule { display: none; }
  .tool-name { font-size: 1.1rem; }
  .masthead-end { width: 100%; margin-left: 0; }
  .subject-picker { flex: 1; }
  .subject-picker select { min-width: 0; flex: 1; }
  .rv-tags { grid-template-columns: minmax(0, 1fr); gap: 4px; }
  .card { padding: 16px; }
  .cards { grid-template-columns: minmax(0, 1fr); }
  .filter, .filter select { flex: 1 1 140px; min-width: 0; }
  .shown { margin-left: 0; }
  .order-row { grid-template-columns: 32px minmax(0, 1fr); }
  .order-marks, .order-btns { grid-column: 2; }
  .site-footer { padding: 14px 16px; }
}