/* ============================================================
   AME — practice.css
   Practice hub (setup + history) and the one-at-a-time runner.
   ============================================================ */

/* ---------- generic input (number/text) ---------- */
.input {
  width: 100%;
  padding: 0.55em 0.8em;
  background: var(--bg-primary);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-family: var(--font-sans);
  font-size: var(--font-sm);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}
.input:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-primary-light);
}

/* ============================================================
   PRACTICE HUB  (/practice)
   ============================================================ */
.practice-page { max-width: 1000px; margin: 0 auto; }
.practice-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: var(--space-lg);
  align-items: start;
}
@media (max-width: 800px) {
  .practice-grid { grid-template-columns: 1fr; }
}
.practice-setup, .practice-history { padding: var(--space-lg); }
.practice-setup h2, .practice-history h2 { margin-top: 0; }

.setup-field { margin-bottom: var(--space-lg); }
.setup-label {
  display: block;
  font-size: var(--font-sm);
  font-weight: 600;
  margin-bottom: var(--space-xs);
  color: var(--text-primary);
}
.setup-row { display: flex; gap: var(--space-md); }
.setup-row .setup-field { flex: 1; }

/* type segmented control */
.seg {
  display: inline-flex;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  overflow: hidden;
}
.seg-btn {
  padding: var(--space-sm) var(--space-md);
  border: 0;
  background: var(--bg-primary);
  cursor: pointer;
  font-size: var(--font-sm);
  color: var(--text-secondary);
  transition: background var(--transition-fast), color var(--transition-fast);
}
.seg-btn + .seg-btn { border-left: 1px solid var(--border); }
.seg-btn.active { background: var(--color-primary); color: #fff; font-weight: 600; }

.setup-check {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  font-size: var(--font-sm);
  color: var(--text-secondary);
  margin-top: var(--space-sm);
  cursor: pointer;
}

/* scope picker */
.scope-books { display: flex; flex-direction: column; gap: var(--space-xs); }
.scope-book {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-xs) var(--space-sm);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  cursor: pointer;
  font-size: var(--font-sm);
  transition: border-color var(--transition-fast);
}
.scope-book:hover { border-color: var(--accent); }
.scope-book-title { font-weight: 600; }

.setup-error { color: var(--color-danger-bright); font-size: var(--font-sm); margin-top: var(--space-sm); }

/* history panel */
/* --- history: session cards with progress/result rings --- */
.practice-history-head { display: flex; align-items: baseline; justify-content: space-between; gap: var(--space-md); margin-bottom: var(--space-sm); }
.practice-history-head h2 { margin: 0; }
.hist-grid { display: flex; flex-direction: column; gap: var(--space-sm); }

.hist-card {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: var(--space-md);
  padding: var(--space-sm) var(--space-md);
  background: var(--surface);
  border: 1px solid var(--border);
  border-left: 4px solid var(--accent);
  border-radius: 10px;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}
.hist-card:hover { transform: translateY(-2px); box-shadow: 0 8px 22px rgba(0, 0, 0, 0.14); }
.hist-card.is-done   { border-left-color: var(--color-success); }
.hist-card.is-done.band-mid { border-left-color: var(--color-warning, #f0b429); }
.hist-card.is-done.band-low { border-left-color: var(--color-danger); }
.hist-card.is-paused { border-left-color: var(--color-warning, #f0b429); }
.hist-card.is-live   { border-left-color: var(--accent); }

.hist-ring { position: relative; width: 58px; height: 58px; display: grid; place-items: center; flex-shrink: 0; }
.hist-ring svg { position: absolute; inset: 0; width: 100%; height: 100%; transform: rotate(-90deg); }
.hist-ring circle { fill: none; stroke-width: 9; }
.hist-ring-track { stroke: var(--surface-2); }
.hist-ring-bar { stroke-linecap: round; }
.hist-ring-center { position: relative; text-align: center; line-height: 1.05; }
.hist-ring-center strong { display: block; font-size: 15px; font-weight: 700; color: var(--text-primary); }
.hist-ring-center em { font-style: normal; font-size: 10px; color: var(--text-muted); }

.hist-main { min-width: 0; }
.hist-title { margin: 0; font-weight: 700; }
.hist-when { margin: 2px 0 0; font-size: var(--font-sm); color: var(--text-muted); }
.hist-detail { margin: 4px 0 0; font-size: var(--font-sm); color: var(--text-secondary); }
.hist-chips { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 7px; }
.hist-chip {
  font-size: 11px; line-height: 1;
  padding: 3px 9px; border-radius: 999px;
  background: var(--surface-2); border: 1px solid var(--border);
  color: var(--text-secondary);
}

.hist-actions { display: flex; align-items: center; gap: var(--space-sm); }
.hist-actions .btn svg {
  width: 14px; height: 14px;
  fill: none; stroke: currentColor;
  stroke-width: 2.4; stroke-linecap: round; stroke-linejoin: round;
}
.hist-restart {
  width: 38px; height: 38px; border-radius: 50%;
  display: grid; place-items: center; cursor: pointer;
  border: 1px solid var(--border);
  background: var(--surface-2); color: var(--text-secondary);
  transition: color var(--transition-fast), border-color var(--transition-fast),
              transform var(--transition-fast);
}
.hist-restart svg {
  width: 17px; height: 17px;
  fill: none; stroke: currentColor;
  stroke-width: 2.2; stroke-linecap: round; stroke-linejoin: round;
}
.hist-restart:hover:not(:disabled) { color: var(--accent); border-color: var(--accent); transform: rotate(-70deg); }
.hist-restart:disabled { opacity: 0.5; cursor: default; }
.hist-restart.is-busy svg { animation: hist-spin 0.9s linear infinite; }
@keyframes hist-spin { to { transform: rotate(-360deg); } }
.hist-empty { margin: var(--space-xs) 0 0; }

@media (max-width: 520px) {
  .hist-card { grid-template-columns: auto 1fr; }
  .hist-actions { grid-column: 1 / -1; justify-content: flex-end; }
}

/* ============================================================
   RUNNER  (/practice/run/{id})
   ============================================================ */
.runner {
  display: flex;
  flex-direction: column;
  min-height: calc(100vh - 220px);
  position: relative;
}

/* --- top bar --- */
.runner-topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-sm) var(--space-md);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  margin-bottom: var(--space-md);
}
.rt-left { display: flex; align-items: center; gap: var(--space-md); }
/* progress-circle boxes: slightly darker than the topbar row */
.rt-box { display: flex; align-items: center; gap: var(--space-xs); padding: 4px 10px 4px 7px; border-radius: var(--radius-md); }
.rt-timer-box { background: rgba(0,0,0,.08); }
.rt-count-box { background: rgba(0,0,0,.05); }
.rt-circle { display: inline-flex; line-height: 0; }
.rt-timer { font-variant-numeric: tabular-nums; font-weight: 700; font-size: var(--font-lg); }
.rt-progress { color: var(--text-secondary); font-size: var(--font-sm); }
.rt-right { display: flex; align-items: center; gap: var(--space-xs); }
.rt-btn {
  width: 38px;
  height: 38px;
  display: grid;
  place-items: center;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  background: var(--bg-primary);
  cursor: pointer;
  color: var(--text-primary);
  transition: border-color var(--transition-fast), background var(--transition-fast);
}
.rt-btn:hover { border-color: var(--accent); background: var(--color-accent-light); }
.rt-btn svg { width: 18px; height: 18px; fill: currentColor; stroke: none; }

/* jump dropdown */
.rt-jump { position: relative; }
.rt-jump-menu {
  position: absolute;
  right: 0;
  top: calc(100% + 6px);
  z-index: 30;
  min-width: 190px;
  max-height: 340px;
  overflow-y: auto;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.18);
  padding: var(--space-xs);
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.jump-item {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-xs) var(--space-sm);
  border: 0;
  border-radius: var(--radius-md);
  background: transparent;
  cursor: pointer;
  text-align: left;
  font-size: var(--font-sm);
  color: var(--text-primary);
}
.jump-item:hover { background: var(--color-accent-light); }
.jump-item.current { background: var(--color-primary-light); font-weight: 700; }
.jump-st { margin-left: auto; font-weight: 700; }

/* --- stage / item --- */
.runner-stage {
  flex: 1;
  display: flex;
  align-items: flex-start;
  justify-content: center;
  padding: var(--space-md) 0;
}
.item { width: 100%; max-width: 720px; position: relative; }
.question-item {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
  padding: var(--space-lg);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
}
.item-kind {
  font-size: var(--font-xs);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
  font-weight: 700;
}
.item-qtext {
  font-size: var(--font-lg);
  font-weight: 600;
  line-height: 1.5;
  margin: 0;
  color: var(--text-primary);
}
.item-reveal {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  margin-top: var(--space-sm);
  padding-top: var(--space-md);
  border-top: 1px solid var(--border);
}
.item-verdict { font-weight: 700; margin: 0; }
.item-verdict.ok { color: var(--color-success-bright); }
.item-verdict.bad { color: var(--color-danger-bright); }
.item-explanation { font-size: var(--font-sm); line-height: 1.6; color: var(--text-primary); }
.item-content { font-size: var(--font-sm); color: var(--text-secondary); white-space: pre-wrap; }
.item-refs { font-size: var(--font-sm); color: var(--text-muted); }
.item-error { color: var(--color-danger-bright); }

/* ---------- QBank study mode (reuses the practice item styles) ---------- */
.q-study {
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
  max-width: 720px;
  margin: 0 auto;
}
.q-study-actions { margin-top: var(--space-xs); }

/* --- custom radio: circle in a circle --- */
.opts { display: flex; flex-direction: column; gap: var(--space-sm); }
.opt {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-sm) var(--space-md);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  cursor: pointer;
  position: relative;
  transition: border-color var(--transition-fast), background-color var(--transition-fast);
}
.opt:hover { border-color: var(--accent); background: var(--color-accent-light); }
.opt-input { position: absolute; opacity: 0; pointer-events: none; }
.opt-dot {
  width: 20px;
  height: 20px;
  border-radius: 50%;
  border: 2px solid var(--text-muted);
  display: grid;
  place-items: center;
  flex: 0 0 auto;
  transition: border-color var(--transition-fast);
}
.opt-dot-inner {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--color-primary);
  transform: scale(0);
  transition: transform 0.12s ease;
}
.opt:has(.opt-input:checked) { border-color: var(--color-primary); background: var(--color-primary-light); }
.opt:has(.opt-input:checked) .opt-dot { border-color: var(--color-primary); }
.opt:has(.opt-input:checked) .opt-dot-inner { transform: scale(1); }
.opt.is-correct { border-color: var(--color-success); background: var(--color-success-light); }
.opt.is-correct .opt-dot { border-color: var(--color-success); }
.opt.is-correct .opt-dot-inner { background: var(--color-success); transform: scale(1); }
.opt.is-wrong { border-color: var(--color-danger); background: var(--color-danger-light); }
.opt.is-wrong .opt-dot { border-color: var(--color-danger); }
.opt.is-wrong .opt-dot-inner { background: var(--color-danger); transform: scale(1); }
.opt:has(.opt-input:disabled) { cursor: default; }
.opt-text { font-family: var(--font-sans); font-size: var(--font-sm); line-height: 1.5; }

/* --- wave SVG background on practice cards (the fix) --- */
.flash-card.has-wave { position: relative; overflow: hidden; }
.flash-card.has-wave::after {
  content: '';
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background-color: var(--color-accent);
  opacity: 0.12;
  -webkit-mask-image: url('../Media/moji-front.svg');
          mask-image: url('../Media/moji-front.svg');
  -webkit-mask-repeat: no-repeat;
          mask-repeat: no-repeat;
  -webkit-mask-position: center;
          mask-position: center;
  -webkit-mask-size: cover;
          mask-size: cover;
}
.flash-card.has-wave > * { position: relative; z-index: 1; }

/* --- bottom nav --- */
.runner-nav {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-lg);
  padding: var(--space-md) 0 var(--space-lg);
}
.rnav-btn {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text-primary);
  cursor: pointer;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-fast), border-color var(--transition-fast),
              background var(--transition-fast), opacity var(--transition-fast);
}
.rnav-btn svg {
  width: 24px;
  height: 24px;
  fill: none;
  stroke: currentColor;
  stroke-width: 2.4;
  stroke-linecap: round;
  stroke-linejoin: round;
}
.rnav-btn:hover:not(:disabled) { border-color: var(--accent); background: var(--color-accent-light); transform: translateY(-2px); }
.rnav-btn:disabled { opacity: 0.35; cursor: default; }
.rnav-validate { width: 68px; height: 68px; background: var(--color-primary); border-color: var(--color-primary); color: #fff; }
.rnav-validate svg { stroke: #fff; }
.rnav-validate:hover:not(:disabled) { filter: brightness(1.08); background: var(--color-primary); }
.rnav-btn.is-finish { background: var(--color-success); border-color: var(--color-success); color: #fff; }
.rnav-btn.is-finish svg { stroke: #fff; }
.rnav-btn.shake { animation: rnav-shake 0.4s; }
@keyframes rnav-shake {
  0%, 100% { transform: translateX(0); }
  20% { transform: translateX(-6px); }
  40% { transform: translateX(6px); }
  60% { transform: translateX(-4px); }
  80% { transform: translateX(4px); }
}

/* --- pause overlay --- */
.runner-pause {
  position: absolute;
  inset: 0;
  /* Above the article popup (--z-popup) — paused means paused, even mid-read (v0.12.0). */
  z-index: calc(var(--z-popup, 500) + 10);
  display: grid;
  place-items: center;
  background: rgba(0, 0, 0, 0.25);
  -webkit-backdrop-filter: blur(8px);
          backdrop-filter: blur(8px);
  border-radius: var(--radius);
}
.pause-inner {
  text-align: center;
  background: var(--surface);
  padding: var(--space-xl);
  border-radius: var(--radius);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.2);
}
.pause-title { font-size: var(--font-xl); font-weight: 700; margin: 0 0 var(--space-xs); }
#pause-sub { max-width: 34ch; margin: 0 auto var(--space-md); line-height: 1.5; }

/* ============================================================
   v0.11.0 — learn-in-context practice (article modes)
   ============================================================ */

/* (i) explainer popovers: see the generic component in ui.css §16 + main.js. */

/* blue article button in the runner bottom bar */
.rnav-article { background: var(--accent); border-color: var(--accent); color: #fff; }
.rnav-article svg { stroke: #fff; }
.rnav-article:hover:not(:disabled) { background: var(--accent); filter: brightness(1.12); transform: translateY(-2px); }
.rnav-article.is-needed { animation: article-pulse 1.6s ease-in-out infinite; }
@keyframes article-pulse {
  0%, 100% { box-shadow: 0 0 0 0 rgba(47, 128, 209, 0.55); }
  50%      { box-shadow: 0 0 0 12px rgba(47, 128, 209, 0); }
}

/* article-first veil: blurs the ITEM card only (distinct from the full-screen
   pause overlay) until the source article has been read */
.item-veil {
  position: absolute; inset: -14px;
  border-radius: 18px;
  background: rgba(24, 27, 32, 0.45);
  backdrop-filter: blur(10px) saturate(0.8);
  -webkit-backdrop-filter: blur(10px) saturate(0.8);
  display: grid; place-items: center;
  z-index: 6;
}
.item-veil-inner { text-align: center; padding: var(--space-lg); }
.item-veil-text {
  font-weight: 600; margin: 0 0 var(--space-md);
  color: #fff; text-shadow: 0 1px 6px rgba(0, 0, 0, 0.55);
}

/* points chip in the reveal verdict */
.item-points { font-size: var(--font-sm); font-weight: 600; white-space: nowrap; }
.item-points em { font-style: normal; font-weight: 400; opacity: 0.85; }
.item-points.full { color: var(--color-success-bright); }
.item-points.part { color: #f0b429; }
.item-points.zero { color: var(--text-muted); }

/* article popup (full-screen reader) */
.article-overlay {
  position: fixed; inset: 0;
  z-index: var(--z-popup, 500);  /* above the site nav (--z-sticky:200); below toasts (600) */
  background: var(--bg-primary);
  display: flex; flex-direction: column;
}
.article-overlay-head {
  display: flex; align-items: center; justify-content: space-between;
  gap: var(--space-md);
  padding: var(--space-md) var(--space-lg);
  border-bottom: 1px solid var(--border);
  background: var(--surface);
}
.article-overlay-title {
  font-weight: 700;
  overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}
.article-overlay-actions { display: flex; align-items: center; gap: var(--space-md); flex-shrink: 0; }
.article-overlay-link {
  font-size: var(--font-sm); color: var(--accent);
  text-decoration: none; white-space: nowrap;
}
.article-overlay-link:hover { text-decoration: underline; }
.article-close {
  width: 40px; height: 40px;
  border-radius: 50%;
  border: 1px solid var(--border);
  background: var(--surface-2);
  color: var(--text-primary);
  font-size: 18px; line-height: 1;
  cursor: pointer;
  transition: border-color var(--transition-fast), filter var(--transition-fast);
}
.article-close:hover { border-color: var(--accent); }
.article-close.is-confirm {
  background: var(--color-success); border-color: var(--color-success);
  color: #fff; font-size: 20px;
}
.article-close.is-confirm:hover { filter: brightness(1.08); }
.article-overlay-body { flex: 1; overflow-y: auto; padding: var(--space-lg); }
.article-loading { text-align: center; padding: var(--space-lg); }
.article-content { max-width: 760px; margin: 0 auto; }

/* highlight the source paragraph; dim (but keep) everything else */
.article-content > * { transition: opacity 0.25s ease; }
.article-content > .hl-dim { opacity: 0.45; }
.article-content > .hl-target {
  opacity: 1;
  background: rgba(240, 180, 41, 0.14);
  outline: 2px solid rgba(240, 180, 41, 0.5);
  outline-offset: 6px;
  border-radius: 8px;
}

/* small alert shown when an item has no source paragraph (whole article shown) */
.article-alert {
  max-width: 760px;
  margin: 0 auto var(--space-md);
  padding: 8px 14px;
  font-size: var(--font-sm);
  color: var(--text-primary);
  background: rgba(240, 180, 41, 0.16);
  border: 1px solid rgba(240, 180, 41, 0.5);
  border-radius: 8px;
}

/* ============================================================
   v0.12.0 — site-wide "Resume test" beacon (rendered by main.js)
   Floating pill under the top bar while a practice session's
   2-minute resume cookie is alive. Links to /practice/run/{id}.
   ============================================================ */
.resume-tag {
  position: fixed;
  top: calc(var(--topbar-h, 64px) + 12px);
  right: 14px;
  z-index: var(--z-sticky, 200);
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 7px 14px 7px 12px;
  background: var(--accent, #4f8cff);
  color: #fff;
  font-family: var(--font-sans);
  font-size: var(--font-xs);
  font-weight: 600;
  letter-spacing: 0.02em;
  text-decoration: none;
  border-radius: 999px;
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.22);
  animation: resume-tag-in 0.35s cubic-bezier(0.2, 0.9, 0.3, 1.2) both;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast),
              filter var(--transition-fast);
}
.resume-tag svg {
  width: 11px;
  height: 11px;
  fill: #fff;
  animation: resume-tag-pulse 1.8s ease-in-out infinite;
}
.resume-tag:hover {
  transform: translateX(-3px);
  filter: brightness(1.1);
  box-shadow: 0 6px 18px rgba(0, 0, 0, 0.3);
  color: #fff;
}
.resume-tag.is-leaving { animation: resume-tag-out 0.3s ease both; }
@keyframes resume-tag-in {
  from { opacity: 0; transform: translateX(26px); }
  to   { opacity: 1; transform: none; }
}
@keyframes resume-tag-out {
  to { opacity: 0; transform: translateX(26px); }
}
@keyframes resume-tag-pulse {
  0%, 100% { opacity: 1; }
  50%      { opacity: 0.45; }
}