/* Tadreeb demo. One family (Readex Pro, Arabic + Latin). Cool sage paper, deep teal ink,
   ochre for progress and good outcomes, brick for costly ones. Logical properties throughout
   so the same stylesheet mirrors correctly under dir="rtl". */
:root {
  --paper: #f2f4f2;
  --ink: #152322;
  --ink-soft: rgba(21, 35, 34, 0.68);
  --ink-faint: rgba(21, 35, 34, 0.42);
  --line: #d3dad6;
  --green: #0f3d3e;
  --green-soft: #e3ecea;
  --ochre: #c9a227;
  --ochre-soft: #f7efd3;
  --brick: #b5483a;
  --brick-soft: #f6e2de;
  --white: #ffffff;
  --radius-stage: 28px;
  --radius-ui: 10px;
  --maxw: 1180px;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html { -webkit-text-size-adjust: 100%; }
body {
  font-family: "Readex Pro", "Segoe UI", system-ui, sans-serif;
  color: var(--ink);
  background: var(--paper);
  line-height: 1.55;
  font-size: 16px;
  font-weight: 300;
  -webkit-font-smoothing: antialiased;
}
strong, b, h1, h2, h3 { font-weight: 500; }
a { color: var(--green); text-underline-offset: 3px; }
button { font: inherit; color: inherit; }
:focus-visible { outline: 3px solid var(--ochre); outline-offset: 2px; }
@media (prefers-reduced-motion: reduce) { *, *::before, *::after { transition: none !important; animation: none !important; } }

.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 16px; }

/* Top band */
.top { padding: 18px 0 8px; display: flex; justify-content: space-between; align-items: center; gap: 16px; flex-wrap: wrap; }
.brand { font-size: 14px; color: var(--ink-soft); }
.brand b { color: var(--ink); font-weight: 500; }
.lang { font-size: 14px; color: var(--ink-soft); }
.lang a { color: var(--green); }
.lang [aria-current] { color: var(--ink); font-weight: 500; }

/* Stand-first */
.stand { padding: 18px 0 26px; max-width: 720px; }
.stand h1 { font-size: clamp(26px, 4.6vw, 40px); line-height: 1.15; letter-spacing: -0.01em; font-weight: 500; text-wrap: balance; }
.stand p { margin-top: 12px; font-size: 17px; color: var(--ink-soft); max-width: 62ch; }
.stand .note { margin-top: 10px; font-size: 14px; color: var(--ink-faint); }

/* Two halves */
.halves { display: grid; grid-template-columns: minmax(0, 1fr); gap: 28px; align-items: start; }
.half, .stage-wrap, .stage, .deck, .slide { min-width: 0; }
@media (min-width: 900px) { .halves { grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr); gap: 44px; } .half-after { order: 2; } .half-before { order: 1; } }
.half h2 { font-size: 15px; font-weight: 500; color: var(--ink-soft); padding-bottom: 8px; border-bottom: 1px solid var(--line); margin-bottom: 14px; display: flex; justify-content: space-between; align-items: baseline; gap: 12px; }
.half h2 span { font-weight: 300; color: var(--ink-faint); font-size: 13px; }

/* Before: the deck, deliberately flat */
.deck { display: grid; grid-template-columns: 1fr; gap: 10px; }
@media (min-width: 560px) { .deck { grid-template-columns: 1fr 1fr; } }
.slide { background: var(--white); border: 1px solid var(--line); aspect-ratio: 16 / 9; padding: 14px 16px 26px; display: flex; flex-direction: column; position: relative; font-size: 13px; line-height: 1.5; }
.slide .n { position: absolute; inset-block-end: 8px; inset-inline-start: 12px; font-size: 11px; color: var(--ink-faint); }
.slide h3 { font-size: 14px; font-weight: 500; color: var(--green); border-bottom: 2px solid var(--green); padding-bottom: 4px; margin-bottom: 8px; }
.slide ul { padding-inline-start: 18px; }
.slide li { margin: 2px 0; }
.slide li::marker { color: var(--ink-faint); }
.deck-note { margin-top: 12px; font-size: 14px; color: var(--ink-soft); }

/* After: the phone-shaped stage. The hero. */
.stage-wrap { display: flex; flex-direction: column; align-items: center; gap: 10px; }
.stage {
  width: 100%; max-width: 420px; height: auto; min-height: 560px; max-height: min(760px, 82vh);
  background: var(--white); border-radius: var(--radius-stage); border: 1px solid var(--line);
  box-shadow: 0 1px 0 rgba(21, 35, 34, 0.06), 0 24px 48px -28px rgba(15, 61, 62, 0.45);
  overflow: auto; overscroll-behavior: contain; position: relative;
  direction: rtl; text-align: start; font-size: 15px; line-height: 1.6;
}
.stage-cap { font-size: 13px; color: var(--ink-faint); text-align: center; max-width: 420px; }
#activity { min-height: 100%; }
.screen { padding: 0 18px 22px; }

.act-head { position: sticky; top: 0; z-index: 2; background: var(--green); color: var(--white); margin: 0 -18px 14px; padding: 16px 18px 12px; }
.act-title { display: flex; flex-direction: column; gap: 1px; }
.act-title strong { font-size: 16px; font-weight: 500; }
.act-title span { font-size: 12.5px; opacity: 0.78; }
.trust { display: grid; grid-template-columns: auto 1fr auto; gap: 8px; align-items: center; margin-top: 10px; font-size: 12px; }
.trust-bar { height: 8px; background: rgba(255, 255, 255, 0.2); border-radius: 999px; overflow: hidden; }
.trust-fill { display: block; height: 100%; background: var(--ochre); border-radius: 999px; transition: width 520ms cubic-bezier(.2,.8,.2,1); }
.trust-num { font-variant-numeric: tabular-nums; opacity: 0.9; }
.act-step { margin-top: 8px; font-size: 12px; opacity: 0.8; }

.intro-text { font-size: 15.5px; margin: 6px 0 18px; }
.scene { font-size: 13.5px; color: var(--ink-soft); margin-bottom: 12px; padding-inline-start: 10px; border-inline-start: 2px solid var(--ochre); }
.choose-label { font-size: 13px; color: var(--ink-faint); margin: 10px 0 6px; }

.thread { display: flex; flex-direction: column; gap: 8px; margin-bottom: 10px; }
.bubble { max-width: 92%; padding: 9px 12px; border-radius: 14px; font-size: 14px; position: relative; }
.bubble .who { display: block; font-size: 11px; color: var(--ink-faint); margin-bottom: 2px; }
.bubble.you { background: var(--green-soft); align-self: flex-start; border-start-start-radius: 4px; }
.bubble.them { background: var(--paper); align-self: flex-end; border-start-end-radius: 4px; }
.thread-new .bubble { animation: pop 360ms cubic-bezier(.2,.8,.2,1) both; }
.thread-new .bubble.them { animation-delay: 240ms; }
@keyframes pop { from { opacity: 0; transform: translateY(6px); } to { opacity: 1; transform: none; } }

.options { display: flex; flex-direction: column; gap: 8px; }
.opt { text-align: start; background: var(--white); border: 1.5px solid var(--line); border-radius: var(--radius-ui); padding: 11px 13px; font-size: 14px; line-height: 1.5; cursor: pointer; }
.opt:hover { border-color: var(--green); }
.opt:active { background: var(--green-soft); }

.why { margin: 12px 0 14px; border-radius: var(--radius-ui); padding: 11px 13px; font-size: 13.5px; animation: pop 360ms 520ms cubic-bezier(.2,.8,.2,1) both; }
.why p { margin-top: 4px; }
.why-head { display: flex; justify-content: space-between; gap: 10px; align-items: baseline; }
.why-head strong { font-size: 13.5px; }
.delta { font-size: 12px; white-space: nowrap; font-variant-numeric: tabular-nums; }
.why-good { background: var(--ochre-soft); border-inline-start: 3px solid var(--ochre); }
.why-weak { background: var(--paper); border-inline-start: 3px solid var(--ink-faint); }
.why-bad { background: var(--brick-soft); border-inline-start: 3px solid var(--brick); }

.btn { display: inline-block; width: 100%; border: 1.5px solid var(--green); background: var(--white); color: var(--green); border-radius: var(--radius-ui); padding: 12px 14px; font-size: 15px; font-weight: 500; cursor: pointer; }
.btn-primary { background: var(--green); color: var(--white); }
.btn[disabled] { opacity: 0.45; cursor: not-allowed; }
.btn-row { display: flex; gap: 8px; }

/* Sorting */
.sort-title { font-size: 17px; margin: 4px 0 8px; }
.tray { display: flex; flex-direction: column; gap: 8px; min-height: 48px; margin-bottom: 12px; }
.card { background: var(--white); border: 1.5px solid var(--line); border-radius: var(--radius-ui); padding: 9px 12px; font-size: 13.5px; line-height: 1.5; cursor: grab; touch-action: none; user-select: none; -webkit-user-select: none; }
.card.selected { border-color: var(--ochre); box-shadow: 0 0 0 3px var(--ochre-soft); }
.card.lifting { opacity: 0.35; }
.card.ghost { position: fixed; z-index: 50; pointer-events: none; box-shadow: 0 12px 28px -10px rgba(15, 61, 62, 0.5); transform: translate(0, 0); cursor: grabbing; }
.card.placed { cursor: default; font-size: 12.5px; padding: 7px 10px; }
.card.placed-right { border-color: var(--ochre); background: var(--ochre-soft); }
.card.placed-wrong { border-color: var(--brick); background: var(--brick-soft); }
.buckets { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-bottom: 14px; }
.bucket { min-height: 150px; border: 1.5px dashed var(--line); border-radius: var(--radius-ui); padding: 8px; background: var(--paper); }
.bucket-armed { border-color: var(--ochre); cursor: pointer; }
.bucket.over { border-style: solid; border-color: var(--green); background: var(--green-soft); }
.bucket-label { font-size: 13px; font-weight: 500; color: var(--green); margin-bottom: 6px; text-align: center; }
.bucket-items { display: flex; flex-direction: column; gap: 6px; }
.sort-result { font-weight: 500; margin-bottom: 10px; }

/* Debrief */
.score { display: grid; grid-template-columns: auto 1fr; gap: 14px; align-items: center; background: var(--green-soft); border-radius: var(--radius-ui); padding: 14px; margin-bottom: 14px; }
.score-num { font-size: 44px; font-weight: 500; line-height: 1; color: var(--green); font-variant-numeric: tabular-nums; }
.score-num small { font-size: 16px; color: var(--ink-faint); font-weight: 300; }
.score-label { font-size: 12px; color: var(--ink-faint); }
.score-text p { font-size: 14px; margin-top: 2px; }
.score-trust { font-size: 12.5px; color: var(--ink-soft); margin-top: 4px; }
.sub { font-size: 14.5px; margin: 14px 0 8px; }
.path { list-style: none; display: flex; flex-direction: column; gap: 8px; }
.path-row { border-inline-start: 3px solid var(--line); padding: 4px 10px; font-size: 13px; }
.path-row.q-good { border-color: var(--ochre); }
.path-row.q-bad { border-color: var(--brick); }
.path-step { font-size: 11.5px; color: var(--ink-faint); }
.path-k { color: var(--ink-faint); }
.path-line.best { color: var(--ink-soft); margin-top: 2px; }
.principles { padding-inline-start: 20px; font-size: 13.5px; display: flex; flex-direction: column; gap: 6px; margin-bottom: 16px; }

/* Below: what changed, build notes */
.notes { margin-top: 44px; padding-top: 24px; border-top: 1px solid var(--line); display: grid; grid-template-columns: 1fr; gap: 22px 40px; }
@media (min-width: 760px) { .notes { grid-template-columns: 1fr 1fr; } }
.notes h2 { font-size: 17px; margin-bottom: 8px; }
.notes p, .notes li { font-size: 15px; color: var(--ink-soft); }
.notes ul { padding-inline-start: 18px; display: flex; flex-direction: column; gap: 6px; }
.notes li b { color: var(--ink); font-weight: 500; }

footer { margin: 40px 0 28px; font-size: 13px; color: var(--ink-faint); display: flex; flex-direction: column; gap: 6px; }
footer .selftest { font-variant-numeric: tabular-nums; }
footer .selftest.ok { color: var(--green); }
footer .selftest.fail { color: var(--brick); }

/* RTL page (ar/): the frame itself mirrors; the stage is already RTL. */
html[dir="rtl"] .stand h1 { letter-spacing: 0; }
html[dir="rtl"] body { font-weight: 300; }

.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0; }