/* =========================================================================
   AP Practice - stylesheet
   Aged-paper theme: Playfair Display for headings, IBM Plex for everything
   else. Layout is a single centred column that collapses cleanly to phones.
   ========================================================================= */

:root {
  /* Palette */
  --ink:      #1a1209;
  --ink-soft: #4a3c28;
  --paper:    #f5efe2;
  --aged:     #e8dcc8;
  --sepia:    #c9a86c;
  --sepia-dk: #a8873f;
  --rust:     #9b3a1e;
  --forest:   #2d4a2d;
  --navy:     #1c2e4a;
  --correct:  #2d6a2d;
  --wrong:    #8b1a1a;

  /* Spacing scale - every gap in the app comes from here */
  --sp-1: 0.25rem;
  --sp-2: 0.5rem;
  --sp-3: 0.75rem;
  --sp-4: 1rem;
  --sp-5: 1.5rem;
  --sp-6: 2rem;

  --radius:    4px;
  --radius-lg: 8px;
  --shadow:    2px 4px 12px rgba(0, 0, 0, 0.05);
  --shadow-lg: 0 6px 20px rgba(0, 0, 0, 0.18);
  --focus:     0 0 0 3px rgba(28, 46, 74, 0.35);
  --speed:     0.18s;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { -webkit-text-size-adjust: 100%; }

body {
  background: var(--paper);
  background-image:
    repeating-linear-gradient(0deg, transparent, transparent 27px, rgba(0, 0, 0, 0.04) 28px),
    url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='400' height='400'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.8' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='400' height='400' filter='url(%23n)' opacity='0.08'/%3E%3C/svg%3E");
  color: var(--ink);
  font-family: 'IBM Plex Sans', system-ui, sans-serif;
  font-weight: 400;
  line-height: 1.5;
  min-height: 100vh;
  padding: var(--sp-6) var(--sp-4);
  display: flex;
  flex-direction: column;
  align-items: center;
  overflow-x: hidden;
}

h1, h2, h3, h4 { font-family: 'Playfair Display', Georgia, serif; line-height: 1.2; }

h1 {
  font-size: clamp(1.75rem, 5vw, 2.5rem);
  text-align: center;
  margin-bottom: var(--sp-5);
  padding-bottom: var(--sp-4);
  border-bottom: 2px solid var(--sepia);
  width: 100%;
  max-width: 800px;
}

h2 { font-size: clamp(1.25rem, 3.5vw, 1.6rem); }
h3 { font-size: 1.15rem; }
h4 { font-size: 1.05rem; }

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

code {
  font-family: 'IBM Plex Mono', ui-monospace, monospace;
  font-weight: 600;
  background: rgba(201, 168, 108, 0.22);
  border: 1px solid rgba(168, 135, 63, 0.35);
  border-radius: 3px;
  padding: 0.05em 0.35em;
  white-space: nowrap;
}

/* --- Layout ------------------------------------------------------------ */

.container {
  width: 100%;
  max-width: 800px;
  background: rgba(255, 255, 255, 0.45);
  border: 1px solid var(--sepia);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: var(--sp-6);
  position: relative;
  text-align: center;
}

.app-screen { display: none; }
.app-screen.active { display: block; animation: fadeIn var(--speed) ease-out; }
.hidden { display: none !important; }
[hidden] { display: none !important; }
.stack > * + * { margin-top: var(--sp-3); }

@keyframes fadeIn { from { opacity: 0; transform: translateY(4px); } to { opacity: 1; transform: none; } }

.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;
}

.subtle { color: var(--ink-soft); font-size: 0.9rem; }
.field-label {
  display: block; text-align: left; font-weight: 600; font-size: 0.85rem;
  letter-spacing: 0.06em; text-transform: uppercase; color: var(--ink-soft);
  margin-bottom: var(--sp-2);
}

/* --- Controls ---------------------------------------------------------- */

button {
  font-family: 'IBM Plex Mono', ui-monospace, monospace;
  font-size: 0.95rem;
  font-weight: 600;
  background: var(--aged);
  color: var(--ink);
  border: 1px solid var(--sepia);
  border-radius: var(--radius);
  padding: var(--sp-3);
  min-height: 44px; /* comfortable tap target */
  cursor: pointer;
  transition: background var(--speed), color var(--speed), border-color var(--speed), box-shadow var(--speed);
}

button:hover:not(:disabled) { background: var(--sepia); color: #fff; }
button:active:not(:disabled) { transform: translateY(1px); }
button:disabled { opacity: 0.55; cursor: not-allowed; }

button.active,
button[aria-pressed="true"] {
  background: var(--navy);
  color: #fff;
  border-color: var(--navy);
}

:focus-visible { outline: 2px solid var(--navy); outline-offset: 2px; box-shadow: var(--focus); }

.big-btn {
  display: block;
  width: 100%;
  padding: var(--sp-4);
  font-size: 1.1rem;
  margin-top: var(--sp-3);
  background: var(--forest);
  color: #fff;
  border: 1px solid transparent;
}
.big-btn:hover:not(:disabled)           { background: #243b24; color: #fff; }
.big-btn.secondary                      { background: var(--navy); }
.big-btn.secondary:hover:not(:disabled) { background: #14243c; }
.big-btn.danger                         { background: var(--rust); }
.big-btn.danger:hover:not(:disabled)    { background: #7a2a14; }
.big-btn.quiet {
  background: transparent; color: var(--ink-soft); border-color: var(--sepia);
}
.big-btn.quiet:hover:not(:disabled) { background: var(--aged); color: var(--ink); }

input[type="text"], input[type="number"], select {
  font-family: 'IBM Plex Mono', ui-monospace, monospace;
  font-size: 1.05rem;
  padding: var(--sp-3);
  min-height: 44px;
  text-align: center;
  color: var(--ink);
  background: #fff;
  border: 1px solid var(--sepia);
  border-radius: var(--radius);
}
input:focus-visible, select:focus-visible { border-color: var(--navy); }

input.code-input {
  text-transform: uppercase;
  letter-spacing: 0.2em;
  width: 100%;
  max-width: 320px;
  font-size: 1.4rem;
}

.button-row { display: flex; flex-wrap: wrap; gap: var(--sp-3); }
.button-row > * { flex: 1 1 180px; margin-top: 0; }

/* --- Menu / setup ------------------------------------------------------ */

.menu-section { margin-bottom: var(--sp-5); text-align: left; }
.menu-section > h4 {
  margin-bottom: var(--sp-3);
  color: var(--rust);
  font-size: 1.25rem;
}

.filter-group + .filter-group { margin-top: var(--sp-5); }
.filter-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  gap: var(--sp-2);
  margin-bottom: var(--sp-3);
}
.filter-grid button { font-size: 0.85rem; padding: var(--sp-2); }

.settings-row {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-3);
  justify-content: space-between;
  align-items: center;
  padding: var(--sp-4);
  background: rgba(255, 255, 255, 0.55);
  border: 1px solid var(--sepia);
  border-radius: var(--radius);
}
.settings-row + .settings-row { margin-top: var(--sp-3); }
.settings-row h4 { margin: 0; }
.settings-row input[type="number"] { width: 96px; }
.inline-control { display: flex; align-items: center; gap: var(--sp-3); flex-wrap: wrap; }
.inline-control label { display: flex; align-items: center; gap: var(--sp-2); font-weight: 600; }
input[type="checkbox"] { width: 18px; height: 18px; accent-color: var(--navy); }

.tutorial-box {
  background: rgba(255, 255, 255, 0.72);
  border: 1px dashed var(--sepia);
  border-radius: var(--radius);
  padding: var(--sp-5);
  margin-top: var(--sp-6);
  text-align: left;
  font-size: 0.95rem;
}
.tutorial-box h3 { color: var(--rust); margin-bottom: var(--sp-3); text-align: center; }
.tutorial-box p + p { margin-top: var(--sp-2); }
.tutorial-box ul { margin: var(--sp-3) 0 0 var(--sp-5); }
.tutorial-box li + li { margin-top: var(--sp-2); }
.powerup-name { font-weight: 600; font-family: 'IBM Plex Mono', ui-monospace, monospace; color: var(--navy); }

.error-text {
  display: block;
  color: var(--wrong);
  font-weight: 600;
  font-size: 0.9rem;
  margin-top: var(--sp-2);
  min-height: 1.2em;
}

/* --- Multiplayer lobby ------------------------------------------------- */

.net-status {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 9998;
  padding: var(--sp-2) var(--sp-4);
  text-align: center;
  font-family: 'IBM Plex Mono', ui-monospace, monospace;
  font-size: 0.8rem;
  font-weight: 600;
  color: #fff;
  background: var(--sepia-dk);
}
.net-status[data-kind="reconnecting"] { background: var(--rust); }
.net-status[data-kind="online"]       { background: var(--correct); }

.lobby-code { text-align: center; margin-bottom: var(--sp-5); }
.lobby-code .field-label { display: block; text-align: center; }
.room-code-display {
  font-family: 'IBM Plex Mono', ui-monospace, monospace;
  font-size: clamp(2.25rem, 9vw, 3.5rem);
  font-weight: 600;
  color: var(--rust);
  letter-spacing: 0.15em;
  margin: var(--sp-2) 0 var(--sp-3);
  word-break: break-all;
}
.lobby-code-actions { display: flex; gap: var(--sp-2); justify-content: center; flex-wrap: wrap; }

.chip-btn {
  width: auto;
  margin-top: 0;
  padding: var(--sp-2) var(--sp-4);
  font-size: 0.8rem;
  font-family: 'IBM Plex Mono', ui-monospace, monospace;
  background: var(--aged);
  border: 1px solid var(--sepia);
  border-radius: 999px;
  color: var(--ink);
  cursor: pointer;
  transition: background var(--speed), color var(--speed);
}
.chip-btn:hover:not(:disabled) { background: var(--navy); color: #fff; }
.chip-btn:disabled { opacity: 0.55; cursor: default; }

.status-text { font-size: 1.05rem; margin: var(--sp-4) 0; font-weight: 600; color: var(--navy); }

.roster-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--sp-3);
  margin-bottom: var(--sp-3);
  text-align: left;
}
.roster-head h4 { margin: 0; color: var(--rust); }

.player-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
  gap: var(--sp-2);
  margin-bottom: var(--sp-5);
  text-align: left;
}
.player-card {
  display: flex;
  align-items: center;
  gap: var(--sp-2);
  padding: var(--sp-3);
  background: rgba(255, 255, 255, 0.7);
  border: 1px solid var(--sepia);
  border-left: 3px solid var(--sepia);
  border-radius: var(--radius);
  font-size: 0.9rem;
  min-width: 0;
}
.player-card.is-me   { border-left-color: var(--navy); background: #fff; }
.player-card.is-host { border-left-color: var(--correct); }
.player-card.is-gone { opacity: 0.5; border-left-color: var(--wrong); }
.player-card .who { font-weight: 600; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.player-card .tag {
  margin-left: auto;
  flex: none;
  font-family: 'IBM Plex Mono', ui-monospace, monospace;
  font-size: 0.68rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ink-soft);
}
.player-card .dot { flex: none; width: 8px; height: 8px; border-radius: 50%; background: var(--correct); }
.player-card.is-gone .dot { background: var(--wrong); }
.player-grid .roster-empty {
  grid-column: 1 / -1;
  padding: var(--sp-4);
  border: 1px dashed var(--sepia);
  border-radius: var(--radius);
  color: var(--ink-soft);
  text-align: center;
  font-size: 0.9rem;
}

.settings-readout {
  padding: var(--sp-4);
  margin-bottom: var(--sp-4);
  background: rgba(255, 255, 255, 0.6);
  border: 1px dashed var(--sepia);
  border-radius: var(--radius);
  text-align: left;
  font-size: 0.9rem;
}
.settings-readout dl { display: grid; grid-template-columns: auto 1fr; gap: var(--sp-1) var(--sp-4); }
.settings-readout dt { color: var(--ink-soft); }
.settings-readout dd { font-weight: 600; }

hr.rule { border: 0; border-top: 1px solid var(--sepia); margin: var(--sp-5) 0; }

/* --- Quiz screen ------------------------------------------------------- */

#screen-quiz { text-align: left; }

.timer-container {
  position: relative;
  width: 100%;
  height: 22px;
  background: var(--aged);
  border: 1px solid var(--sepia);
  border-radius: 11px;
  overflow: hidden;
  margin-bottom: var(--sp-4);
}
.timer-fill {
  height: 100%;
  width: 100%;
  background: var(--forest);
  transform-origin: left center;
  transition: background-color 0.3s;
}
.timer-fill.warning { background: var(--rust); }
.timer-text {
  position: absolute;
  inset: 0;
  text-align: center;
  font-family: 'IBM Plex Mono', ui-monospace, monospace;
  font-size: 0.8rem;
  font-weight: 600;
  line-height: 20px;
  color: #fff;
  text-shadow: 0 1px 2px rgba(0, 0, 0, 0.6);
}

.progress-track {
  width: 100%;
  height: 6px;
  background: var(--aged);
  border-radius: 3px;
  overflow: hidden;
  margin-bottom: var(--sp-3);
}
.progress-fill { height: 100%; background: var(--sepia-dk); width: 0; transition: width var(--speed) ease-out; }

.stats-bar {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-2);
  justify-content: space-between;
  font-family: 'IBM Plex Mono', ui-monospace, monospace;
  font-size: 0.82rem;
  margin-bottom: var(--sp-4);
  padding-bottom: var(--sp-4);
  border-bottom: 1px solid var(--sepia);
}
.chip {
  padding: var(--sp-1) var(--sp-3);
  border-radius: 999px;
  background: var(--aged);
  font-weight: 600;
  white-space: nowrap;
}
.chip.player-score { background: var(--navy); color: #fff; }
.chip.streak { background: var(--rust); color: #fff; }
.chip.streak[data-cold="true"] { background: var(--aged); color: var(--ink-soft); }
.chip.players { background: var(--sepia); color: #fff; }
.chip.rank { background: var(--forest); color: #fff; }

/* Who has locked in, updated live. Far more useful mid-round than the blank
   "waiting for other players" box this replaced. */
.answer-tracker {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--sp-2);
  margin-bottom: var(--sp-4);
  padding: var(--sp-3);
  background: rgba(255, 255, 255, 0.55);
  border: 1px dashed var(--sepia);
  border-radius: var(--radius);
}
.answer-tracker .tracker-label {
  font-family: 'IBM Plex Mono', ui-monospace, monospace;
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ink-soft);
  margin-right: var(--sp-1);
}
.tracker-pip {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-1);
  padding: 2px var(--sp-2);
  border: 1px solid var(--sepia);
  border-radius: 999px;
  background: var(--paper);
  font-size: 0.78rem;
  max-width: 11rem;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  transition: background var(--speed), color var(--speed), border-color var(--speed);
}
.tracker-pip.done { background: var(--forest); border-color: var(--forest); color: #fff; }
.tracker-pip.gone { opacity: 0.45; text-decoration: line-through; }
.tracker-pip.watching { font-style: italic; opacity: 0.7; }

.unit-badge {
  display: inline-block;
  font-family: 'IBM Plex Mono', ui-monospace, monospace;
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--rust);
  border: 1px solid currentColor;
  border-radius: 999px;
  padding: 2px var(--sp-2);
  margin-bottom: var(--sp-3);
}
.unit-badge + .unit-badge { margin-left: var(--sp-2); }
.unit-badge.level-easy   { color: var(--forest); }
.unit-badge.level-medium { color: var(--sepia-dk); }
.unit-badge.level-hard   { color: var(--rust); }

.question-box {
  font-size: clamp(1.05rem, 2.6vw, 1.3rem);
  line-height: 1.55;
  margin-bottom: var(--sp-5);
  overflow-wrap: break-word;
}

.options-grid { display: grid; grid-template-columns: 1fr; gap: var(--sp-3); }

.option-btn {
  display: flex;
  align-items: flex-start;
  gap: var(--sp-3);
  width: 100%;
  text-align: left;
  padding: var(--sp-4);
  font-family: 'IBM Plex Sans', system-ui, sans-serif;
  font-size: 1rem;
  font-weight: 400;
  line-height: 1.45;
  background: #fff;
  border: 1px solid var(--sepia);
}
.option-btn .key {
  flex: 0 0 auto;
  font-family: 'IBM Plex Mono', ui-monospace, monospace;
  font-weight: 600;
  font-size: 0.85rem;
  width: 1.6em;
  height: 1.6em;
  display: grid;
  place-items: center;
  border-radius: 3px;
  background: var(--aged);
  color: var(--ink-soft);
  margin-top: 0.1em;
}
.option-btn .label { flex: 1 1 auto; overflow-wrap: anywhere; }
.option-btn:hover:not(:disabled) { background: var(--aged); border-color: var(--sepia-dk); }
.option-btn:hover:not(:disabled) .key { background: var(--sepia); color: #fff; }
.option-btn.selected { background: var(--sepia); color: #fff; border-color: var(--ink); }
.option-btn.selected .key { background: rgba(255, 255, 255, 0.85); color: var(--ink); }
.option-btn.correct-ans,
.option-btn.correct-ans:disabled { background: var(--correct); color: #fff; border-color: var(--correct); opacity: 1; }
.option-btn.wrong-ans,
.option-btn.wrong-ans:disabled { background: var(--wrong); color: #fff; border-color: var(--wrong); opacity: 1; }
.option-btn.correct-ans .key, .option-btn.wrong-ans .key { background: rgba(255, 255, 255, 0.85); color: var(--ink); }
.option-btn.correct-ans code, .option-btn.wrong-ans code, .option-btn.selected code {
  background: rgba(255, 255, 255, 0.22); border-color: rgba(255, 255, 255, 0.4); color: inherit;
}
.option-btn.eliminated { opacity: 0.32; pointer-events: none; text-decoration: line-through; }
.options-grid.locked .option-btn { cursor: default; }

.feedback-panel {
  margin-top: var(--sp-4);
  padding: var(--sp-4);
  border-left: 4px solid var(--sepia);
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.7);
  font-size: 0.95rem;
  line-height: 1.55;
}
.feedback-panel.correct { border-left-color: var(--correct); }
.feedback-panel.wrong   { border-left-color: var(--wrong); }
.feedback-verdict { font-weight: 600; font-family: 'IBM Plex Mono', ui-monospace, monospace; display: block; margin-bottom: var(--sp-1); }
.feedback-panel.correct .feedback-verdict { color: var(--correct); }
.feedback-panel.wrong   .feedback-verdict { color: var(--wrong); }

.overlay-msg {
  padding: var(--sp-4);
  margin-top: var(--sp-4);
  text-align: center;
  background: var(--aged);
  border: 2px dashed var(--sepia);
  border-radius: var(--radius);
  font-weight: 600;
  font-family: 'IBM Plex Mono', ui-monospace, monospace;
}

.quiz-actions { display: flex; flex-wrap: wrap; gap: var(--sp-3); margin-top: var(--sp-5); }
.quiz-actions .big-btn { margin-top: 0; flex: 1 1 200px; }
.quiz-actions .big-btn.quit { flex: 0 1 160px; font-size: 0.95rem; padding: var(--sp-3); }

/* --- Leaderboard / shop ------------------------------------------------ */

#leaderboard-modal {
  display: none;
  position: absolute;
  inset: 0;
  z-index: 10;
  background: rgba(245, 239, 226, 0.98);
  border-radius: var(--radius);
  padding: var(--sp-6) var(--sp-4);
  flex-direction: column;
  align-items: center;
  text-align: center;
  overflow-y: auto;
}
#leaderboard-modal.open { display: flex; }
.lb-title { font-size: 1.75rem; color: var(--rust); margin-bottom: var(--sp-2); font-family: 'Playfair Display', Georgia, serif; }

.lb-list {
  width: 100%;
  max-width: 500px;
  background: #fff;
  border: 1px solid var(--sepia);
  border-radius: var(--radius);
  margin-bottom: var(--sp-4);
  max-height: 220px;
  overflow-y: auto;
  text-align: left;
}
.lb-row {
  display: flex;
  justify-content: space-between;
  gap: var(--sp-3);
  padding: var(--sp-2) var(--sp-4);
  border-bottom: 1px solid var(--aged);
  font-family: 'IBM Plex Mono', ui-monospace, monospace;
  font-size: 1rem;
}
.lb-row:last-child { border-bottom: 0; }
.lb-row.me { background: var(--aged); font-weight: 600; }
.lb-row.gone { opacity: 0.5; }
.lb-row .lb-who { display: flex; align-items: center; gap: var(--sp-2); min-width: 0; }
.lb-row .lb-place { flex: none; width: 1.6rem; color: var(--ink-soft); }
.lb-row .lb-name { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.lb-row .lb-mark { flex: none; font-weight: 700; }
.lb-row .lb-mark.hit  { color: var(--correct); }
.lb-row .lb-mark.miss { color: var(--wrong); }
.lb-row .lb-tally { flex: none; display: flex; align-items: baseline; gap: var(--sp-3); }
.lb-row .lb-delta { font-size: 0.8rem; color: var(--correct); }
.lb-row .lb-delta.zero { color: var(--ink-soft); }

.lb-controls {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--sp-3);
  flex-wrap: wrap;
  margin-bottom: var(--sp-4);
}
.lb-next { color: var(--rust); font-weight: 600; margin: 0; }
.shop-budget { font-size: 0.8rem; font-weight: 400; color: var(--ink-soft); }

.shop-container { width: 100%; max-width: 620px; border-top: 2px solid var(--sepia); padding-top: var(--sp-4); margin-top: var(--sp-2); }
.shop-container h4 { margin-bottom: var(--sp-3); color: var(--navy); }
.shop-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(140px, 1fr)); gap: var(--sp-2); }
.shop-item { padding: var(--sp-2); font-size: 0.75rem; line-height: 1.35; text-align: center; }
.shop-item strong { display: block; font-size: 0.85rem; margin-bottom: var(--sp-1); }
.shop-item .cost { color: var(--rust); font-weight: 600; }
.shop-item:hover:not(:disabled) .cost { color: #fff; }
.shop-item:disabled { opacity: 0.45; }

/* --- Final standings --------------------------------------------------- */

.final-standings {
  margin: var(--sp-5) 0;
  border: 1px solid var(--sepia);
  border-radius: var(--radius);
  background: #fff;
  overflow: hidden;
  text-align: left;
}
.standing {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
  padding: var(--sp-3) var(--sp-4);
  border-bottom: 1px solid var(--aged);
  font-family: 'IBM Plex Mono', ui-monospace, monospace;
}
.standing:last-child { border-bottom: 0; }
.standing.me { background: var(--aged); }
.standing .place {
  flex: none;
  width: 2.25rem;
  font-family: 'Playfair Display', Georgia, serif;
  font-size: 1.3rem;
  color: var(--sepia-dk);
}
.standing.first .place { color: var(--rust); }
.standing .name { flex: 1 1 auto; font-weight: 600; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.standing .detail { flex: none; font-size: 0.78rem; color: var(--ink-soft); }
.standing .points { flex: none; font-weight: 600; color: var(--navy); min-width: 4rem; text-align: right; }

/* --- Results ----------------------------------------------------------- */

.grade { font-size: clamp(2.5rem, 10vw, 4rem); font-family: 'Playfair Display', Georgia, serif; margin: var(--sp-4) 0 var(--sp-2); }
.score-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  gap: var(--sp-3);
  margin: var(--sp-5) 0;
}
.score-card {
  background: rgba(255, 255, 255, 0.7);
  border: 1px solid var(--sepia);
  border-radius: var(--radius);
  padding: var(--sp-4) var(--sp-2);
}
.score-card .value { display: block; font-family: 'Playfair Display', Georgia, serif; font-size: 1.75rem; color: var(--navy); }
.score-card .label { display: block; font-size: 0.75rem; letter-spacing: 0.08em; text-transform: uppercase; color: var(--ink-soft); margin-top: var(--sp-1); }

.review-block { margin: var(--sp-5) 0; text-align: left; }
.review-block > summary {
  cursor: pointer;
  font-family: 'IBM Plex Mono', ui-monospace, monospace;
  font-weight: 600;
  padding: var(--sp-3);
  background: var(--aged);
  border: 1px solid var(--sepia);
  border-radius: var(--radius);
  list-style: none;
}
.review-block > summary::-webkit-details-marker { display: none; }
.review-block > summary::before { content: '▸ '; }
.review-block[open] > summary::before { content: '▾ '; }
.review-item { padding: var(--sp-4); border-bottom: 1px solid var(--aged); font-size: 0.92rem; }
.review-item:last-child { border-bottom: 0; }
.review-item .q { display: block; margin-bottom: var(--sp-2); }
.review-item .a { display: block; color: var(--correct); font-weight: 600; }
.review-item .yours { display: block; color: var(--wrong); }
.review-item .why { display: block; margin-top: var(--sp-2); color: var(--ink-soft); }

/* --- Toasts ------------------------------------------------------------ */

#toast-container {
  position: fixed;
  top: var(--sp-4);
  right: var(--sp-4);
  z-index: 9999;
  display: flex;
  flex-direction: column;
  gap: var(--sp-2);
  max-width: min(320px, calc(100vw - 2rem));
  pointer-events: none;
}
.toast {
  background: var(--navy);
  color: #fff;
  padding: var(--sp-3) var(--sp-4);
  border-radius: var(--radius);
  font-family: 'IBM Plex Mono', ui-monospace, monospace;
  font-size: 0.85rem;
  font-weight: 600;
  box-shadow: var(--shadow-lg);
  animation: slideIn var(--speed) ease-out;
}
.toast.bad  { background: var(--wrong); }
.toast.good { background: var(--correct); }
@keyframes slideIn { from { transform: translateX(110%); opacity: 0; } to { transform: none; opacity: 1; } }

/* --- Responsive -------------------------------------------------------- */

@media (max-width: 700px) {
  body { padding: var(--sp-4) var(--sp-3); }
  .container { padding: var(--sp-4); }
  .tutorial-box { padding: var(--sp-4); margin-top: var(--sp-5); }
  .settings-row { flex-direction: column; align-items: stretch; text-align: left; }
  .settings-row .inline-control { justify-content: space-between; }
  .filter-grid { grid-template-columns: repeat(auto-fit, minmax(104px, 1fr)); }
  .stats-bar { font-size: 0.75rem; }
  .quiz-actions .big-btn, .quiz-actions .big-btn.quit { flex: 1 1 100%; }
  #toast-container { left: var(--sp-3); right: var(--sp-3); max-width: none; }
}

@media (max-width: 420px) {
  .option-btn { padding: var(--sp-3); font-size: 0.95rem; }
  .filter-grid { grid-template-columns: repeat(2, 1fr); }
  .shop-grid { grid-template-columns: repeat(2, 1fr); }
  .player-grid { grid-template-columns: 1fr 1fr; }
  .answer-tracker { padding: var(--sp-2); gap: var(--sp-1); }
  .tracker-pip { font-size: 0.72rem; max-width: 7rem; }
  .standing .detail { display: none; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
}

@media print { body { background: none; } .quiz-actions, #toast-container { display: none; } }