:root {
  /* Palette */
  --bg:        #0a0a0f;
  --bg-elev:   #12121a;
  --bg-deep:   #050507;
  --ink:       #e8e8f0;
  --ink-dim:   #7a7a90;
  --ink-faint: #4a4a5e;
  --magenta:   #ff2a6d;
  --cyan:      #05d9e8;
  --lime:      #9bff5b;
  --orange:    #ff7b00;
  --red:       #ff3b3b;
  --grid:      #1a1a26;

  /* Backwards-compat aliases — existing rules continue to work */
  --panel:    var(--bg-elev);
  --panel-2:  var(--bg-deep);
  --text:     var(--ink);
  --muted:    var(--ink-dim);
  --accent:   var(--magenta);
  --accent-2: var(--cyan);
  --good:     var(--lime);
  --bad:      var(--red);
  --warn:     var(--orange);
  --border:   var(--grid);

  /* Typography */
  --font-display: "Space Grotesk", ui-sans-serif, system-ui, sans-serif;
  --font-mono:    "JetBrains Mono", ui-monospace, "SFMono-Regular", Menlo, Consolas, monospace;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: var(--font-mono);
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.75rem 1.25rem;
  background: var(--panel);
  border-bottom: 2px solid transparent;
  border-image: linear-gradient(90deg, var(--magenta), var(--cyan)) 1;
}
.brand {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.25rem;
  color: var(--magenta);
  text-decoration: none;
  letter-spacing: -0.02em;
  display: inline-flex;
  align-items: center;
}
.brand::before {
  content: "▮";
  color: var(--lime);
  margin-right: 0.4rem;
  animation: cursor-blink 1.1s steps(1) infinite;
}
.topbar nav a {
  color: var(--ink-dim);
  text-decoration: none;
  margin-left: 1rem;
  font-family: var(--font-mono);
  font-weight: 500;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  transition: color 120ms ease;
}
.topbar nav a:hover { color: var(--cyan); }
.topbar nav a.active { color: var(--magenta); }
.topbar nav a.active::before { content: "[ "; color: var(--magenta); }
.topbar nav a.active::after  { content: " ]"; color: var(--magenta); }

main#app {
  max-width: 1100px;
  margin: 0 auto;
  padding: 1.5rem 1.25rem 4rem;
}

.view.hidden, .hidden { display: none !important; }

h1 { margin-top: 0; font-family: var(--font-display); font-weight: 700; letter-spacing: -0.02em; }
h2 { margin-top: 2rem; font-family: var(--font-display); font-weight: 700; letter-spacing: -0.01em; border-bottom: 1px solid var(--border); padding-bottom: 0.25rem; }

/* Settings */
.settings-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1rem;
}
.op-card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 2px;
  padding: 0.75rem 1rem 1rem;
}
.op-card legend {
  float: left;
  width: 100%;
  padding: 0;
  margin-bottom: 0.5rem;
  font-family: var(--font-mono);
  font-weight: 500;
  font-size: 0.85rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--magenta);
}
/* Clear the float so subsequent .range/hint content flows below the legend */
.op-card legend + * { clear: left; }
.op-card legend .op-sym {
  color: var(--cyan);
  margin-right: 0.3rem;
}
.op-card .range { display: flex; gap: 0.75rem; flex-wrap: wrap; }
.op-card .range label { display: flex; flex-direction: column; font-size: 0.85rem; color: var(--muted); }
.op-card .range-sep {
  font-family: var(--font-mono);
  font-weight: 700;
  color: var(--cyan);
  text-align: center;
  margin: 0.4rem 0;
  letter-spacing: 0.1em;
}
.op-card .range-pair { clear: left; }
.op-card input[type=number] {
  width: 4.5rem;
  margin-top: 0.2rem;
  padding: 0.4rem 0.5rem;
  border-radius: 2px;
  border: 1px solid var(--border);
  background: var(--panel-2);
  color: var(--text);
  font-family: var(--font-mono);
  font-size: 1rem;
  font-variant-numeric: tabular-nums;
  transition: border-color 120ms ease, box-shadow 120ms ease;
}
.op-card input[type=number]:focus {
  outline: none;
  border-color: var(--magenta);
  box-shadow: 0 0 0 3px rgba(255, 42, 109, 0.25);
}
.op-card .hint {
  color: var(--ink-faint);
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-style: italic;
  margin: 0.5rem 0 0;
}

input[type=number]::-webkit-outer-spin-button,
input[type=number]::-webkit-inner-spin-button {
  -webkit-appearance: none;
  margin: 0;
}
input[type=number] { -moz-appearance: textfield; }

.duration-card .quick-picks {
  margin-top: 0.5rem;
  display: flex;
  gap: 0.4rem;
  flex-wrap: wrap;
}
.duration-card .quick-picks button {
  background: transparent;
  color: var(--ink-dim);
  border: 1px solid var(--ink-dim);
  border-radius: 2px;
  padding: 0.3rem 0.7rem;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  cursor: pointer;
  transition: color 120ms ease, border-color 120ms ease;
}
.duration-card .quick-picks button:hover {
  color: var(--magenta);
  border-color: var(--magenta);
  background: transparent;
}

.actions {
  grid-column: 1 / -1;
  display: flex;
  gap: 0.75rem;
  margin-top: 0.5rem;
}

button.primary, .actions .primary {
  background: var(--magenta);
  color: var(--bg);
  border: none;
  border-radius: 2px;
  padding: 0.7rem 1.4rem;
  font-family: var(--font-mono);
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-size: 0.95rem;
  cursor: pointer;
  box-shadow: 4px 4px 0 var(--cyan);
  transition: transform 120ms ease, box-shadow 120ms ease, background 120ms ease;
}
button.primary:hover, .actions .primary:hover {
  transform: translate(-2px, -2px);
  box-shadow: 6px 6px 0 var(--cyan);
  background: var(--magenta);
  color: var(--bg);
}
button.primary:active, .actions .primary:active {
  transform: translate(2px, 2px);
  box-shadow: 0 0 0 var(--cyan);
}
button.secondary, a.secondary {
  background: transparent;
  color: var(--ink);
  border: 1px solid var(--ink-dim);
  border-radius: 2px;
  padding: 0.55rem 1rem;
  font-family: var(--font-mono);
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  font-size: 0.85rem;
  cursor: pointer;
  text-decoration: none;
  transition: color 120ms ease, border-color 120ms ease;
}
button.secondary:hover, a.secondary:hover {
  color: var(--cyan);
  border-color: var(--cyan);
}
button.danger {
  background: transparent;
  color: var(--red);
  border: 1px solid var(--red);
  border-radius: 2px;
  padding: 0.55rem 1rem;
  font-family: var(--font-mono);
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  font-size: 0.85rem;
  cursor: pointer;
  transition: background 120ms ease, color 120ms ease;
}
button.danger:hover {
  background: var(--red);
  color: var(--bg);
}

/* Drill */
.drill-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 1.25rem;
  margin-bottom: 2rem;
}
.drill-bar .score { color: var(--ink-dim); text-transform: uppercase; letter-spacing: 0.08em; font-size: 0.85rem; }
.drill-bar .score span { font-weight: 700; color: var(--lime); font-size: 1.4rem; margin-left: 0.5rem; font-variant-numeric: tabular-nums; }
.timer { font-variant-numeric: tabular-nums; font-weight: 700; color: var(--cyan); font-size: 1.4rem; transition: color 120ms ease; }
.timer.low { color: var(--orange); animation: pulse 1s ease-in-out infinite; }

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50%      { opacity: 0.55; }
}
@keyframes correct-flash {
  0%   { box-shadow: 0 0 0 3px rgba(155, 255, 91, 0); border-color: var(--magenta); }
  20%  { box-shadow: 0 0 0 5px rgba(155, 255, 91, 0.55); border-color: var(--lime); }
  100% { box-shadow: 0 0 0 3px rgba(155, 255, 91, 0); border-color: var(--magenta); }
}
.prompt input.correct { animation: correct-flash 220ms ease-out; }

.prompt {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  font-family: var(--font-mono);
  font-size: 3rem;
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.02em;
  margin-top: 4rem;
  flex-wrap: wrap;
}
.prompt input {
  font-family: var(--font-mono);
  font-size: 3rem;
  font-variant-numeric: tabular-nums;
  width: 8rem;
  padding: 0.3rem 0.6rem;
  border-radius: 2px;
  border: 1px solid var(--border);
  background: var(--panel-2);
  color: var(--text);
  text-align: center;
  caret-color: var(--lime);
  transition: border-color 120ms ease, box-shadow 120ms ease;
}
.prompt input:focus {
  outline: none;
  border-color: var(--magenta);
  box-shadow: 0 0 0 3px rgba(255, 42, 109, 0.25);
}

/* Score view */
#view-score h1 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 4rem;
  color: var(--lime);
  text-align: center;
  text-shadow: 0 0 20px rgba(155, 255, 91, 0.4);
  margin: 1rem 0;
}
.big-score {
  font-family: var(--font-mono);
  font-size: 6rem;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  text-align: center;
  margin: 1rem 0;
  color: var(--lime);
  animation: score-pop 380ms cubic-bezier(.22, 1, .36, 1) both;
}
.op-summary {
  width: 100%;
  border-collapse: collapse;
  margin-bottom: 1rem;
  font-family: var(--font-mono);
}
.op-summary th, .op-summary td {
  border-bottom: 1px solid var(--border);
  padding: 0.5rem 0.6rem;
  text-align: left;
  font-variant-numeric: tabular-nums;
}
.op-summary th {
  color: var(--ink-dim);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  font-size: 0.8rem;
}
.op-sym.op-add { color: var(--magenta); }
.op-sym.op-sub { color: var(--cyan); }
.op-sym.op-mul { color: var(--lime); }
.op-sym.op-div { color: var(--orange); }

/* History */
.window-picker {
  display: flex;
  gap: 0.6rem;
  align-items: center;
  flex-wrap: wrap;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--ink-dim);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}
.window-picker select {
  padding: 0.4rem 0.6rem;
  background: var(--panel-2);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 2px;
  font-family: var(--font-mono);
  font-size: 0.9rem;
}
.window-picker select:focus {
  outline: none;
  border-color: var(--magenta);
  box-shadow: 0 0 0 3px rgba(255, 42, 109, 0.25);
}

#score-chart {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 2px;
  width: 100%;
  height: auto;
}

.op-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 0.75rem;
}
.op-cards .card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 2px;
  padding: 0.75rem 1rem;
}
.op-cards .card h3 { margin: 0 0 0.4rem; font-size: 1rem; }
.op-cards .card .stat { display: flex; justify-content: space-between; font-size: 0.95rem; }
.op-cards .card .stat .k { color: var(--muted); }

.weak-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
@media (max-width: 720px) { .weak-grid { grid-template-columns: 1fr; } }

.bucket-table, .session-table, .question-log {
  width: 100%;
  border-collapse: collapse;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 2px;
  overflow: hidden;
}
.bucket-table th, .bucket-table td,
.session-table th, .session-table td,
.question-log th, .question-log td {
  padding: 0.45rem 0.6rem;
  border-bottom: 1px solid var(--border);
  text-align: left;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  font-variant-numeric: tabular-nums;
}
.bucket-table th, .session-table th, .question-log th {
  color: var(--ink-dim);
  font-family: var(--font-mono);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  font-size: 0.78rem;
  background: var(--panel-2);
  cursor: pointer;
  user-select: none;
}
.session-table tbody tr { cursor: pointer; transition: background 120ms ease; }
.session-table tbody tr:hover { background: rgba(255, 42, 109, 0.08); }
.session-table tbody tr.selected { background: rgba(255, 42, 109, 0.15); border-left: 2px solid var(--magenta); }

.heatmap-wrap {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.heatmap {
  display: inline-grid;
  gap: 2px;
  background: var(--border);
  padding: 2px;
  border-radius: 2px;
}
.heatmap .cell {
  width: 44px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  background: var(--panel-2);
  color: var(--text);
  border-radius: 2px;
}
.heatmap .cell.label {
  background: transparent;
  color: var(--ink-dim);
  font-weight: 500;
  font-family: var(--font-mono);
}
.heatmap .cell {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
}

.question-log .ok   { color: var(--lime); }
.question-log .bad  { color: var(--red); }
.question-log .tags { color: var(--ink-faint); font-size: 0.78rem; }

/* ---------- Mobile (≤640px) ---------- */
@media (max-width: 640px) {
  /* Global */
  main#app { padding: 1rem 0.75rem 3rem; }
  h1 { font-size: 1.5rem; }
  h2 { font-size: 1.15rem; }

  .topbar { padding: 0.6rem 0.9rem; }
  .brand { font-size: 1rem; }
  .topbar nav a { margin-left: 0.75rem; }

  /* Settings */
  .settings-grid { grid-template-columns: 1fr; }
  .op-card { padding: 0.75rem; }
  .op-card .range label { flex: 1; }
  .op-card input[type=number] { width: 100%; }
  .duration-card .quick-picks button { flex: 1 1 auto; }
  .actions button.primary { width: 100%; }

  /* Drill */
  .drill-bar { font-size: 1rem; }
  .prompt {
    font-size: 2rem;
    margin-top: 1.5rem;
  }
  .prompt input {
    font-size: 2rem;
    width: 5rem;
    padding: 0.25rem 0.5rem;
  }

  /* History — window picker */
  .window-picker { gap: 0.5rem; }
  .window-picker select,
  .window-picker button { flex: 1 1 auto; }

  /* History — tables as stacked cards */
  .bucket-table, .session-table, .question-log {
    display: block;
    border: 0;
    background: transparent;
  }
  .bucket-table thead, .session-table thead, .question-log thead { display: none; }
  .bucket-table tr, .session-table tr, .question-log tr {
    display: block;
    background: var(--panel);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 0.5rem 0.75rem;
    margin-bottom: 0.5rem;
  }
  .bucket-table td, .session-table td, .question-log td {
    display: flex;
    justify-content: space-between;
    padding: 0.25rem 0;
    border: 0;
    font-size: 0.9rem;
  }
  .bucket-table td::before, .session-table td::before, .question-log td::before {
    content: attr(data-label);
    color: var(--muted);
    margin-right: 1rem;
  }
  .session-table tbody tr.selected { background: #1f3556; }

  body::before {
    -webkit-mask-image: radial-gradient(ellipse at center, black 15%, transparent 65%);
            mask-image: radial-gradient(ellipse at center, black 15%, transparent 65%);
    background-size: 24px 24px;
  }
  button.primary, .actions .primary {
    box-shadow: 3px 3px 0 var(--cyan);
  }
  button.primary:hover, .actions .primary:hover {
    box-shadow: 4px 4px 0 var(--cyan);
  }
}

/* ---------- Keyframes ---------- */
@keyframes cursor-blink {
  0%, 60%   { opacity: 1; }
  61%, 100% { opacity: 0; }
}
@keyframes rise {
  from { opacity: 0; transform: translateY(10px); }
  to   { opacity: 1; transform: translateY(0); }
}
@keyframes score-pop {
  from { opacity: 0; transform: scale(0.85); }
  to   { opacity: 1; transform: scale(1); }
}

/* ---------- Background atmosphere ---------- */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  background-color: var(--bg);
  background-image:
    linear-gradient(var(--grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid) 1px, transparent 1px);
  background-size: 32px 32px;
  -webkit-mask-image: radial-gradient(ellipse at center, black 30%, transparent 80%);
          mask-image: radial-gradient(ellipse at center, black 30%, transparent 80%);
  pointer-events: none;
}
body.drilling::before { display: none; }

/* ---------- Settings page accents ---------- */
#view-settings h1::before { content: "> "; color: var(--cyan); }
#view-settings h1::after  { content: " ▍"; color: var(--lime); animation: cursor-blink 1.1s steps(1) infinite; }

.settings-grid .op-card,
.settings-grid .actions {
  animation: rise 380ms cubic-bezier(.22, 1, .36, 1) both;
  animation-delay: calc(var(--i, 0) * 60ms);
}

/* ---------- Drill view ---------- */
.time-bar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--bg-deep);
  z-index: 10;
}
.time-bar-fill {
  height: 100%;
  width: 100%;
  background: var(--magenta);
  transform-origin: left center;
  transition: transform 120ms linear;
}

/* ---------- History page ---------- */
main#app h2::before { content: "> "; color: var(--cyan); }
.op-cards .card {
  font-family: var(--font-mono);
  border-left: 3px solid var(--ink-dim);
  transition: transform 120ms ease;
}
.op-cards .card[data-op=add] { border-left-color: var(--magenta); }
.op-cards .card[data-op=sub] { border-left-color: var(--cyan); }
.op-cards .card[data-op=mul] { border-left-color: var(--lime); }
.op-cards .card[data-op=div] { border-left-color: var(--orange); }
.op-cards .card h3 {
  font-family: var(--font-mono);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  font-size: 0.85rem;
  margin: 0 0 0.4rem;
  color: var(--ink);
}
.op-cards .card .stat { font-variant-numeric: tabular-nums; }

/* ===== zetachad_mul additions ===== */

/* Layout helpers for new pages */
.narrow {
  max-width: 540px;
  margin: 0 auto;
  padding: 1.5rem 1.25rem;
}

/* Landing page */
.landing-buttons {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.75rem;
  margin: 1.25rem 0;
}
@media (max-width: 480px) {
  .landing-buttons { grid-template-columns: 1fr; }
}
.landing-buttons button.primary,
.landing-buttons button.secondary {
  width: 100%;
  min-height: 56px;
  font-size: 1rem;
}
.default-summary {
  background: var(--panel);
  border: 1px solid var(--border);
  border-left: 3px solid var(--cyan);
  padding: 0.75rem 1rem;
  font-family: var(--font-mono);
  font-size: 0.9rem;
  color: var(--ink-dim);
  margin-bottom: 1rem;
}
.default-summary strong { color: var(--ink); }
.advanced-disclosure { margin-top: 1.5rem; }
.advanced-disclosure summary {
  cursor: pointer;
  color: var(--ink-dim);
  font-family: var(--font-mono);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  font-size: 0.85rem;
  padding: 0.5rem 0;
}
.advanced-disclosure summary:hover { color: var(--magenta); }
.eligibility-badge {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  padding: 0.2rem 0.5rem;
  border: 1px solid var(--lime);
  color: var(--lime);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 0.75rem;
}
.eligibility-badge.dim {
  border-color: var(--ink-faint);
  color: var(--ink-faint);
}

/* Auth forms */
.auth-form {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  margin-top: 1rem;
}
.auth-form label { display: flex; flex-direction: column; gap: 0.25rem; font-size: 0.85rem; color: var(--ink-dim); text-transform: uppercase; letter-spacing: 0.06em; }
.auth-form input {
  padding: 0.6rem 0.7rem;
  font-family: var(--font-mono);
  font-size: 1rem;
  background: var(--panel-2);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 2px;
  min-height: 44px;
}
.auth-form input:focus { outline: none; border-color: var(--magenta); box-shadow: 0 0 0 3px rgba(255,42,109,0.25); }
.auth-form .form-error {
  color: var(--red);
  font-family: var(--font-mono);
  font-size: 0.85rem;
  min-height: 1.2em;
}
.auth-form button.primary { min-height: 48px; }

/* User chip in topbar */
.topbar .user-chip { font-family: var(--font-mono); font-size: 0.85rem; color: var(--ink); margin-left: 1rem; }
.topbar .user-chip a { color: var(--ink-dim); margin-left: 0.5rem; }

/* Modal */
.modal-backdrop {
  position: fixed; inset: 0;
  background: rgba(0,0,0,0.6);
  display: flex; align-items: center; justify-content: center;
  z-index: 100;
}
.modal {
  background: var(--panel);
  border: 1px solid var(--border);
  border-left: 3px solid var(--magenta);
  padding: 1.25rem 1.5rem;
  max-width: 420px;
  width: calc(100% - 2rem);
  box-shadow: 0 8px 32px rgba(0,0,0,0.5);
}
.modal h2 { margin-top: 0; border: 0; font-size: 1.2rem; }
.modal p { color: var(--ink-dim); font-family: var(--font-mono); font-size: 0.9rem; }
.modal .actions { display: flex; gap: 0.75rem; margin-top: 1rem; }
.modal .actions > * { flex: 1; min-height: 44px; }

/* Score screen note (custom-config, guest) */
.score-note {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--ink-dim);
  text-align: center;
  margin: 0.5rem 0 1rem;
}

/* Leaderboard */
.leaderboard-table { width: 100%; border-collapse: collapse; font-family: var(--font-mono); }
.leaderboard-table th, .leaderboard-table td {
  padding: 0.5rem 0.6rem;
  border-bottom: 1px solid var(--border);
  text-align: left;
  font-variant-numeric: tabular-nums;
}
.leaderboard-table th {
  color: var(--ink-dim);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  font-size: 0.78rem;
  background: var(--panel-2);
}
.leaderboard-table tr.you { background: rgba(255, 42, 109, 0.08); }
.leaderboard-table tr.you td:first-child { border-left: 2px solid var(--magenta); }
@media (max-width: 480px) {
  .leaderboard-table, .leaderboard-table thead, .leaderboard-table tbody, .leaderboard-table tr, .leaderboard-table td { display: block; }
  .leaderboard-table thead { display: none; }
  .leaderboard-table tr {
    background: var(--panel);
    border: 1px solid var(--border);
    margin-bottom: 0.5rem;
    padding: 0.5rem 0.75rem;
  }
  .leaderboard-table td { display: flex; justify-content: space-between; padding: 0.25rem 0; border: 0; }
  .leaderboard-table td::before { content: attr(data-label); color: var(--muted); margin-right: 1rem; }
}

/* Mobile: keyboard-resize-friendly play layout. */
.play-shell {
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
}
.play-shell .prompt {
  margin-top: 2rem;  /* override upstream's 4rem so it stays on-screen with the keyboard up */
}

/* Tap-target floor for all interactive elements */
button, a.secondary, .auth-form input, .leaderboard-table a {
  min-height: 44px;
}