:root {
  --nmx-accent:        #4f46e5;
  --nmx-accent-dark:   #3730a3;
  --nmx-accent-light:  #818cf8;
  --nmx-gold:          #f59e0b;
  --nmx-success:       #10b981;
  --nmx-error:         #ef4444;
  --nmx-warning:       #f59e0b;
  --nmx-bg:            #f8f7ff;
  --nmx-surface:       #ffffff;
  --nmx-surface-2:     #f1f0fc;
  --nmx-border:        rgba(79,70,229,0.14);
  --nmx-border-strong: rgba(79,70,229,0.30);
  --nmx-text:          #1e1b4b;
  --nmx-text-2:        #4c4a7a;
  --nmx-text-3:        #7c7aaa;
  --nmx-radius:        12px;
  --nmx-radius-sm:     8px;
  --nmx-radius-tile:   10px;
  --nmx-ease:          cubic-bezier(0.34, 1.56, 0.64, 1);
  --nmx-ease-out:      cubic-bezier(0.22, 1, 0.36, 1);
  --nmx-font:          -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  --nmx-font-mono:     'Courier New', Courier, monospace;
}

/* Dark mode: when the game-wrap has nmx-dark, propagate vars to :root
   via JS (see ui-controller.js initToggles). Overlays read from :root.  */

/**
 * Numonex V3 — Main Game Stylesheet
 * Scoped entirely to .nmx-game-wrap to avoid theme conflicts.
 */

/* ── Design Tokens ──────────────────────────────────────────────────────── */
.nmx-game-wrap {
  /* Accent & brand */
  --nmx-accent:        #4f46e5;
  --nmx-accent-dark:   #3730a3;
  --nmx-accent-light:  #818cf8;
  --nmx-gold:          #f59e0b;
  --nmx-silver:        #94a3b8;
  --nmx-bronze:        #b45309;
  --nmx-success:       #10b981;
  --nmx-error:         #ef4444;
  --nmx-warning:       #f59e0b;

  /* Light mode surfaces */
  --nmx-bg:            #f8f7ff;
  --nmx-surface:       #ffffff;
  --nmx-surface-2:     #f1f0fc;
  --nmx-border:        rgba(79,70,229,0.14);
  --nmx-border-strong: rgba(79,70,229,0.30);

  /* Light mode text */
  --nmx-text:          #1e1b4b;
  --nmx-text-2:        #4c4a7a;
  --nmx-text-3:        #7c7aaa;

  /* Tile colours (light) */
  --nmx-tile-bg:       #ffffff;
  --nmx-tile-border:   #c7d2fe;
  --nmx-tile-text:     #1e1b4b;
  --nmx-tile-shadow:   0 2px 8px rgba(79,70,229,0.12);
  --nmx-blank-bg:      #ede9fe;
  --nmx-blank-border:  #4f46e5;
  --nmx-blank-text:    #4f46e5;

  /* Transitions */
  --nmx-ease:          cubic-bezier(0.34, 1.56, 0.64, 1);
  --nmx-ease-out:      cubic-bezier(0.22, 1, 0.36, 1);

  /* Layout */
  --nmx-radius:        12px;
  --nmx-radius-sm:     8px;
  --nmx-radius-tile:   10px;

  /* Fonts */
  --nmx-font:          -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  --nmx-font-mono:     'Courier New', Courier, monospace;

  font-family: var(--nmx-font);
  background:  var(--nmx-bg);
  color:       var(--nmx-text);
  max-width:   820px;
  margin:      0 auto;
  padding:     0 0 24px;
  position:    relative;
  border-radius: var(--nmx-radius);
  overflow:    hidden;
  box-shadow:  0 4px 32px rgba(79,70,229,0.08);
}

/* ── Dark Mode ──────────────────────────────────────────────────────────── */
.nmx-game-wrap.nmx-dark {
  --nmx-bg:            #0f0e1a;
  --nmx-surface:       #1a1830;
  --nmx-surface-2:     #231f3a;
  --nmx-border:        rgba(129,140,248,0.15);
  --nmx-border-strong: rgba(129,140,248,0.35);
  --nmx-text:          #e0deff;
  --nmx-text-2:        #a09ec8;
  --nmx-text-3:        #6764a0;
  --nmx-tile-bg:       #231f3a;
  --nmx-tile-border:   #4f46e5;
  --nmx-tile-text:     #e0deff;
  --nmx-tile-shadow:   0 2px 12px rgba(79,70,229,0.25);
  --nmx-blank-bg:      #1e1b4b;
  --nmx-blank-border:  #818cf8;
  --nmx-blank-text:    #a5b4fc;
}

/* ── Top Bar ────────────────────────────────────────────────────────────── */
.nmx-topbar {
  display:         flex;
  align-items:     center;
  justify-content: space-between;
  gap:             10px;
  padding:         12px 16px;
  background:      var(--nmx-surface);
  border-bottom:   1px solid var(--nmx-border);
  flex-wrap:       wrap;
}

.nmx-level-selector {
  display: flex;
  gap:     4px;
  flex-wrap: wrap;
}

.nmx-level-btn {
  padding:       5px 12px;
  border:        1.5px solid var(--nmx-border-strong);
  border-radius: 20px;
  background:    transparent;
  color:         var(--nmx-text-2);
  font-size:     13px;
  font-weight:   500;
  cursor:        pointer;
  transition:    all 0.18s ease;
  white-space:   nowrap;
  font-family:   var(--nmx-font);
}
.nmx-level-btn:hover {
  background: var(--nmx-surface-2);
  color:      var(--nmx-text);
}
.nmx-level-btn--active {
  background:    var(--nmx-accent);
  border-color:  var(--nmx-accent);
  color:         #fff;
}
.nmx-level-btn--active:hover {
  background: var(--nmx-accent-dark);
}

.nmx-topbar-right {
  display:     flex;
  align-items: center;
  gap:         6px;
}

.nmx-icon-btn {
  width:         36px;
  height:        36px;
  border:        1.5px solid var(--nmx-border);
  border-radius: 50%;
  background:    var(--nmx-surface);
  color:         var(--nmx-text-2);
  cursor:        pointer;
  display:       -webkit-inline-flex;
  display:       inline-flex;
  -webkit-align-items:     center;
          align-items:     center;
  -webkit-justify-content: center;
          justify-content: center;
  transition:    all 0.15s ease;
  flex-shrink:   0;
}
.nmx-icon-btn:hover {
  background:   var(--nmx-surface-2);
  border-color: var(--nmx-border-strong);
}
/* Topbar SVG icons: hardcoded dark colour so they are always visible
   on the light button surface in light mode.
   In dark mode we override to a light colour via .nmx-dark below. */
.nmx-topbar-icon {
  display: block;
}
/* Dark mode: switch icon stroke to a light colour so they show on dark buttons */
.nmx-game-wrap.nmx-dark .nmx-topbar-icon {
  stroke: #c7d2fe !important;
}

/* ── Board ──────────────────────────────────────────────────────────────── */
.nmx-board {
  padding: 20px 16px 12px;
  display: none;          /* shown by JS after Start pressed */
  flex-direction: column;
  gap: 14px;
}

/* ── Player Tabs ────────────────────────────────────────────────────────── */
.nmx-player-tabs {
  display:  flex;
  gap:      6px;
  flex-wrap: wrap;
}
.nmx-player-tab {
  padding:       7px 18px;
  border-radius: 20px;
  border:        1.5px solid var(--nmx-border);
  background:    var(--nmx-surface);
  color:         var(--nmx-text-2);
  font-size:     14px;
  font-weight:   500;
  cursor:        pointer;
  transition:    all 0.15s ease;
}
.nmx-player-tab--active {
  background:   var(--nmx-accent);
  border-color: var(--nmx-accent);
  color:        #fff;
}

/* ── Progress Bar ───────────────────────────────────────────────────────── */
.nmx-progress-wrap {
  position: relative;
  height:   8px;
  background: var(--nmx-surface-2);
  border-radius: 4px;
  overflow: hidden;
}
.nmx-progress-bar {
  height:           100%;
  background:       linear-gradient(90deg, var(--nmx-accent-light), var(--nmx-accent));
  border-radius:    4px;
  width:            0%;
  transition:       width 0.5s var(--nmx-ease-out);
}
.nmx-progress-label {
  position:  absolute;
  right:     0;
  top:       -22px;
  font-size: 12px;
  color:     var(--nmx-text-3);
}

/* ── Timer ──────────────────────────────────────────────────────────────── */
.nmx-timer-wrap {
  position:        relative;
  width:           60px;
  height:          60px;
  align-self:      center;
  display:         flex;
  align-items:     center;
  justify-content: center;
}
.nmx-timer-ring-bg   { stroke: var(--nmx-surface-2); }
.nmx-timer-ring-fill { stroke: var(--nmx-accent); transition: stroke 0.3s, stroke-dashoffset 1s linear; }
.nmx-timer-ring-fill.nmx-timer--warning { stroke: var(--nmx-warning); }
.nmx-timer-ring-fill.nmx-timer--danger  { stroke: var(--nmx-error); }
.nmx-timer-text {
  position:    absolute;
  font-size:   15px;
  font-weight: 700;
  color:       var(--nmx-text);
  font-family: var(--nmx-font-mono);
  line-height: 1;
}

/* ── Score Bar ──────────────────────────────────────────────────────────── */
.nmx-score-bar {
  display:         flex;
  align-items:     center;
  justify-content: space-between;
  gap:             12px;
  background:      var(--nmx-surface);
  border:          1px solid var(--nmx-border);
  border-radius:   var(--nmx-radius-sm);
  padding:         10px 16px;
}
.nmx-score-display, .nmx-attempts-display {
  display:     flex;
  flex-direction: column;
  align-items: center;
  gap:         2px;
}
.nmx-score-label, .nmx-attempts-label {
  font-size: 11px;
  color:     var(--nmx-text-3);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  font-weight: 600;
}
.nmx-score-value {
  font-size:   28px;
  font-weight: 800;
  color:       var(--nmx-accent);
  font-variant-numeric: tabular-nums;
  line-height: 1;
  transition:  all 0.2s var(--nmx-ease);
  font-family: var(--nmx-font-mono);
}
.nmx-score-value.nmx-score-bump {
  transform: scale(1.25);
  color:     var(--nmx-gold);
}

.nmx-streak-display {
  display:     flex;
  align-items: center;
  gap:         4px;
}
.nmx-streak-icon { font-size: 20px; }
.nmx-streak-value {
  font-size:   22px;
  font-weight: 700;
  color:       var(--nmx-gold);
  font-family: var(--nmx-font-mono);
}

.nmx-attempt-pips {
  display: flex;
  gap:     5px;
  margin-top: 4px;
}
.nmx-pip {
  width:        14px;
  height:       14px;
  border-radius: 50%;
  background:   var(--nmx-accent);
  transition:   all 0.2s ease;
}
.nmx-pip--used    { background: var(--nmx-error); }
.nmx-pip--empty   { background: var(--nmx-border-strong); }

/* ── Sequence SVG Area ──────────────────────────────────────────────────── */
.nmx-sequence-area {
  background:    var(--nmx-surface);
  border:        1px solid var(--nmx-border);
  border-radius: var(--nmx-radius);
  padding:       16px 12px 12px;
  overflow:      hidden;
}

.nmx-sequence-svg {
  width:  100%;
  height: auto;
  display: block;
}

/* SVG Tile styles (set via JS setAttribute but also need CSS fallbacks) */
.nmx-tile-rect {
  fill:   var(--nmx-tile-bg);
  stroke: var(--nmx-tile-border);
}
.nmx-tile-text-el {
  fill:        var(--nmx-tile-text);
  font-family: var(--nmx-font-mono);
  font-weight: 700;
  dominant-baseline: central;
  text-anchor: middle;
}
.nmx-blank-rect {
  fill:   var(--nmx-blank-bg);
  stroke: var(--nmx-blank-border);
  stroke-dasharray: 5 3;
}

/* ── Input Area ─────────────────────────────────────────────────────────── */
.nmx-input-area {
  display:        flex;
  flex-direction: column;
  gap:            12px;
}

.nmx-input-slots {
  display:         flex;
  gap:             10px;
  justify-content: center;
  flex-wrap:       wrap;
}

/* Individual answer input slot */
.nmx-input-slot {
  position:    relative;
  display:     flex;
  flex-direction: column;
  align-items: center;
  gap:         4px;
}
.nmx-input-slot label {
  font-size: 11px;
  color:     var(--nmx-text-3);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}
.nmx-input-field {
  width:         96px;
  height:        56px;
  border:        2px solid var(--nmx-blank-border);
  border-radius: var(--nmx-radius-tile);
  background:    var(--nmx-blank-bg);
  color:         var(--nmx-tile-text);
  font-size:     22px;
  font-weight:   700;
  font-family:   var(--nmx-font-mono);
  text-align:    center;
  cursor:        pointer;
  transition:    all 0.15s ease;
  caret-color:   var(--nmx-accent);
  outline:       none;
  -moz-appearance: textfield;
}
.nmx-input-field::-webkit-outer-spin-button,
.nmx-input-field::-webkit-inner-spin-button { -webkit-appearance: none; margin: 0; }
.nmx-input-field:focus {
  border-color: var(--nmx-accent);
  box-shadow:   0 0 0 3px rgba(79,70,229,0.2);
  background:   var(--nmx-surface);
  color:        var(--nmx-text);
}
.nmx-input-field.nmx-correct {
  border-color: var(--nmx-success);
  background:   rgba(16,185,129,0.12);
  color:        var(--nmx-success);
}
.nmx-input-field.nmx-wrong {
  border-color: var(--nmx-error);
  background:   rgba(239,68,68,0.10);
  color:        var(--nmx-error);
  animation:    nmx-shake 0.35s ease;
}
.nmx-input-field.nmx-revealed {
  border-color: var(--nmx-warning);
  background:   rgba(245,158,11,0.12);
  color:        var(--nmx-warning);
}

@keyframes nmx-shake {
  0%,100% { transform: translateX(0); }
  20%      { transform: translateX(-6px); }
  40%      { transform: translateX(6px); }
  60%      { transform: translateX(-4px); }
  80%      { transform: translateX(4px); }
}

/* ── Numeric Keypad ─────────────────────────────────────────────────────── */
.nmx-numpad {
  display:               grid;
  grid-template-columns: repeat(3, 1fr);
  gap:                   7px;
  max-width:             320px;
  margin:                0 auto;
}
.nmx-numpad-btn {
  height:        54px;
  border:        1.5px solid var(--nmx-border-strong);
  border-radius: var(--nmx-radius-sm);
  background:    var(--nmx-surface);
  color:         var(--nmx-text);
  font-size:     22px;
  font-weight:   600;
  font-family:   var(--nmx-font-mono);
  cursor:        pointer;
  transition:    all 0.12s ease;
  display:       flex;
  align-items:   center;
  justify-content: center;
  user-select:   none;
  -webkit-user-select: none;
  touch-action:  manipulation;
}
.nmx-numpad-btn:hover  { background: var(--nmx-surface-2); border-color: var(--nmx-accent); }
.nmx-numpad-btn:active { transform: scale(0.94); background: var(--nmx-surface-2); }
.nmx-numpad-btn--wide  { grid-column: 1 / 3; }
.nmx-numpad-btn--backspace { background: var(--nmx-surface-2); color: var(--nmx-error); }
.nmx-numpad-btn--backspace:hover { background: rgba(239,68,68,0.1); border-color: var(--nmx-error); }

/* ── Action Buttons ─────────────────────────────────────────────────────── */
.nmx-action-btns {
  display:         flex;
  gap:             8px;
  justify-content: center;
  flex-wrap:       wrap;
}

.nmx-btn {
  padding:       10px 22px;
  border-radius: 24px;
  border:        1.5px solid transparent;
  font-size:     14px;
  font-weight:   600;
  font-family:   var(--nmx-font);
  cursor:        pointer;
  transition:    all 0.16s ease;
  display:       inline-flex;
  align-items:   center;
  gap:           6px;
  touch-action:  manipulation;
  white-space:   nowrap;
}
.nmx-btn:disabled { opacity: 0.45; cursor: not-allowed; }
.nmx-btn:active:not(:disabled) { transform: scale(0.96); }

.nmx-btn--primary {
  background: var(--nmx-accent);
  color:      #fff;
  border-color: var(--nmx-accent);
}
.nmx-btn--primary:hover:not(:disabled) { background: var(--nmx-accent-dark); }

.nmx-btn--submit {
  background: var(--nmx-accent);
  color:      #fff;
  border-color: var(--nmx-accent);
  font-size:  15px;
  padding:    11px 28px;
}
.nmx-btn--submit:hover:not(:disabled) { background: var(--nmx-accent-dark); }

.nmx-btn--clue {
  background:  var(--nmx-surface);
  color:       var(--nmx-text-2);
  border-color: var(--nmx-border-strong);
}
.nmx-btn--clue:hover:not(:disabled) {
  background:  var(--nmx-surface-2);
  border-color: var(--nmx-gold);
  color:        var(--nmx-gold);
}

.nmx-btn--reveal {
  background:  transparent;
  color:       var(--nmx-text-3);
  border-color: var(--nmx-border);
  font-size:   13px;
}
.nmx-btn--reveal:hover:not(:disabled) {
  background:  rgba(239,68,68,0.08);
  border-color: var(--nmx-error);
  color:        var(--nmx-error);
}

.nmx-btn--next {
  align-self:  center;
  background:  var(--nmx-success);
  color:       #fff;
  border-color: var(--nmx-success);
  font-size:   15px;
  padding:     11px 32px;
  margin-top:  4px;
}
.nmx-btn--next:hover { filter: brightness(1.1); }

.nmx-btn--ghost {
  background:   transparent;
  color:        var(--nmx-text-2);
  border-color: var(--nmx-border-strong);
}
.nmx-btn--ghost:hover { background: var(--nmx-surface-2); color: var(--nmx-text); }

/* ── Clue Panel ─────────────────────────────────────────────────────────── */
.nmx-clue-panel {
  display:       flex;
  align-items:   flex-start;
  gap:           10px;
  padding:       14px 16px;
  background:    rgba(245,158,11,0.10);
  border:        1.5px solid rgba(245,158,11,0.40);
  border-radius: var(--nmx-radius-sm);
  animation:     nmx-fadein 0.25s ease;
}
.nmx-clue-icon { font-size: 20px; flex-shrink: 0; margin-top: 1px; }
.nmx-clue-text { margin: 0; font-size: 14px; color: var(--nmx-text); line-height: 1.5; }

/* ── Feedback Banner ────────────────────────────────────────────────────── */
.nmx-feedback {
  display:       flex;
  align-items:   center;
  gap:           10px;
  padding:       14px 18px;
  border-radius: var(--nmx-radius-sm);
  font-size:     15px;
  font-weight:   600;
  animation:     nmx-fadein 0.2s ease;
}
.nmx-feedback--correct {
  background:  rgba(16,185,129,0.12);
  border:      1.5px solid rgba(16,185,129,0.35);
  color:       var(--nmx-success);
}
.nmx-feedback--wrong {
  background:  rgba(239,68,68,0.10);
  border:      1.5px solid rgba(239,68,68,0.30);
  color:       var(--nmx-error);
}
.nmx-feedback--revealed {
  background:  rgba(245,158,11,0.10);
  border:      1.5px solid rgba(245,158,11,0.35);
  color:       var(--nmx-warning);
}
.nmx-feedback-icon { font-size: 20px; }
.nmx-feedback-pts  {
  margin-left: auto;
  font-size:   18px;
  font-weight: 800;
  font-family: var(--nmx-font-mono);
}

/* ── Game Over Panel ────────────────────────────────────────────────────── */
.nmx-gameover {
  position:        fixed;
  /* Explicit longhand instead of inset:0 — Safari 14 does not support inset */
  top:             0;
  right:           0;
  bottom:          0;
  left:            0;
  /* Explicit dimensions so Safari flex-centring has a real box to work with */
  width:           100%;
  min-height:      100%;
  display:         -webkit-box;
  display:         -webkit-flex;
  display:         flex;
  -webkit-box-align:   center;
  -webkit-align-items: center;
          align-items: center;
  -webkit-box-pack:      center;
  -webkit-justify-content: center;
          justify-content: center;
  background:      rgba(15,14,26,0.80);
  -webkit-backdrop-filter: blur(4px);
          backdrop-filter: blur(4px);
  z-index:         9999;
  animation:       nmx-fadein 0.35s ease;
}
.nmx-gameover-inner {
  background:    var(--nmx-surface);
  border:        1px solid var(--nmx-border-strong);
  border-radius: 20px;
  padding:       36px 32px;
  text-align:    center;
  max-width:     440px;
  width:         90%;
  max-height:    90vh;
  max-height:    90dvh;
  overflow-y:    auto;
  display:       flex;
  flex-direction: column;
  gap:           18px;
  box-shadow:    0 20px 60px rgba(0,0,0,0.4);
  animation:     nmx-popup 0.4s var(--nmx-ease);
}
.nmx-gameover-badge {
  font-size: 56px;
  line-height: 1;
}
.nmx-gameover-title {
  margin:      0;
  font-size:   26px;
  font-weight: 800;
  color:       var(--nmx-text);
}
.nmx-gameover-stats {
  display:        grid;
  grid-template-columns: repeat(3, 1fr);
  gap:            12px;
}
.nmx-stat-block {
  background:    var(--nmx-surface-2);
  border-radius: var(--nmx-radius-sm);
  padding:       12px 8px;
}
.nmx-stat-value {
  font-size:   28px;
  font-weight: 800;
  color:       var(--nmx-accent);
  font-family: var(--nmx-font-mono);
  display:     block;
}
.nmx-stat-label {
  font-size:  12px;
  color:      var(--nmx-text-3);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-weight: 600;
}
.nmx-gameover-actions {
  display: flex;
  gap:     10px;
  justify-content: center;
}
.nmx-gameover-guest-note {
  font-size: 13px;
  color:     var(--nmx-text-3);
  margin:    0;
  padding:   10px;
  background: var(--nmx-surface-2);
  border-radius: var(--nmx-radius-sm);
}

/* ── Start Screen ───────────────────────────────────────────────────────── */
.nmx-start-screen {
  padding: 32px 24px 20px;
  display: flex;          /* visible from first paint — JS hides on game start */
  align-items: center;
  justify-content: center;
  min-height: 380px;
}
.nmx-start-inner {
  display:        flex;
  flex-direction: column;
  align-items:    center;
  gap:            16px;
  max-width:      440px;
  width:          100%;
  text-align:     center;
}
.nmx-start-logo svg rect { fill: var(--nmx-accent); }
.nmx-start-title {
  font-size:   28px;
  font-weight: 800;
  color:       var(--nmx-text);
  margin:      0;
}
.nmx-start-subtitle {
  font-size: 16px;
  color:     var(--nmx-text-2);
  margin:    0;
}

/* Player setup */
.nmx-player-setup {
  width:          100%;
  display:        flex;
  flex-direction: column;
  gap:            12px;
  align-items:    center;
}
.nmx-setup-label {
  font-size:   14px;
  color:       var(--nmx-text-2);
  font-weight: 600;
}
.nmx-player-count-btns {
  display: flex;
  gap:     8px;
}
.nmx-player-count-btn {
  width:         48px;
  height:        48px;
  border-radius: 50%;
  border:        2px solid var(--nmx-border-strong);
  background:    var(--nmx-surface);
  color:         var(--nmx-text-2);
  font-size:     18px;
  font-weight:   700;
  cursor:        pointer;
  transition:    all 0.15s ease;
}
.nmx-player-count-btn:hover { border-color: var(--nmx-accent); color: var(--nmx-accent); }
.nmx-player-count-btn--active {
  background:   var(--nmx-accent);
  border-color: var(--nmx-accent);
  color:        #fff;
}

.nmx-player-names { width: 100%; display: flex; flex-direction: column; gap: 8px; }
.nmx-player-name-row { display: flex; align-items: center; gap: 10px; }
.nmx-player-name-label {
  font-size:  13px;
  color:      var(--nmx-text-3);
  white-space: nowrap;
  min-width:  72px;
  text-align: right;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
/* Read-only player name display badge */
.nmx-player-name-display {
  flex:          1;
  padding:       9px 16px;
  border:        1.5px solid var(--nmx-border);
  border-radius: var(--nmx-radius-sm);
  background:    var(--nmx-surface-2);
  color:         var(--nmx-text);
  font-size:     15px;
  font-weight:   600;
  font-family:   var(--nmx-font);
  display:       inline-block;
  text-align:    left;
}
.nmx-btn--start { font-size: 17px; padding: 13px 40px; }

/* ── Tutorial Overlay ───────────────────────────────────────────────────── */
.nmx-tutorial-overlay {
  position:   fixed;
  /* Explicit longhand instead of inset:0 — Safari 14 does not support inset */
  top:        0;
  right:      0;
  bottom:     0;
  left:       0;
  /* Explicit dimensions so Safari flex-centring has a real box to work with */
  width:      100%;
  min-height: 100%;
  background: rgba(15,14,26,0.75);
  -webkit-backdrop-filter: blur(4px);
          backdrop-filter: blur(4px);
  z-index:    9999;
  display:    -webkit-box;
  display:    -webkit-flex;
  display:    flex;
  -webkit-box-align:    center;
  -webkit-align-items:  center;
          align-items:  center;
  -webkit-box-pack:         center;
  -webkit-justify-content:  center;
          justify-content:  center;
  padding:    16px;
  animation:  nmx-fadein 0.25s ease;
}
.nmx-tutorial-overlay[hidden] { display: none; }

.nmx-tutorial-panel {
  background:    var(--nmx-surface);
  border:        1px solid var(--nmx-border-strong);
  border-radius: 20px;
  width:         100%;
  max-width:     620px;
  /* Use dvh where supported, fall back to vh */
  max-height:    82vh;
  max-height:    82dvh;
  display:       flex;
  flex-direction: column;
  overflow:      hidden;
  box-shadow:    0 20px 60px rgba(0,0,0,0.4);
  animation:     nmx-popup 0.35s var(--nmx-ease);
}
.nmx-tutorial-header {
  display:         flex;
  align-items:     center;
  justify-content: space-between;
  padding:         20px 22px 14px;
  border-bottom:   1px solid var(--nmx-border);
  flex-shrink:     0;
}
.nmx-tutorial-title {
  font-size:   18px;
  font-weight: 700;
  color:       var(--nmx-text);
  margin:      0;
}
.nmx-tutorial-close {
  background:    transparent;
  border:        none;
  color:         var(--nmx-text-3);
  cursor:        pointer;
  padding:       4px;
  border-radius: 6px;
  transition:    all 0.15s;
}
.nmx-tutorial-close:hover { background: var(--nmx-surface-2); color: var(--nmx-text); }

.nmx-tutorial-body {
  overflow-y:  auto;
  padding:     20px 22px;
  display:     flex;
  flex-direction: column;
  gap:         24px;
  flex:        1;
}
.nmx-tutorial-section h3 {
  font-size:   15px;
  font-weight: 700;
  color:       var(--nmx-accent);
  margin:      0 0 10px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}
.nmx-tutorial-steps {
  margin:      0;
  padding:     0 0 0 20px;
  display:     flex;
  flex-direction: column;
  gap:         6px;
}
.nmx-tutorial-steps li {
  font-size:   14px;
  color:       var(--nmx-text-2);
  line-height: 1.55;
}
.nmx-tutorial-intro { font-size: 13px; color: var(--nmx-text-3); margin: 0 0 12px; }

/* Scoring table */
.nmx-scoring-table  { display: flex; flex-direction: column; gap: 5px; }
.nmx-score-row {
  display:       flex;
  justify-content: space-between;
  align-items:   center;
  padding:       8px 14px;
  border-radius: var(--nmx-radius-sm);
  font-size:     14px;
  font-weight:   600;
}
.nmx-score-row--gold    { background: rgba(245,158,11,0.12); color: #b45309; }
.nmx-score-row--silver  { background: rgba(148,163,184,0.12); color: var(--nmx-text-2); }
.nmx-score-row--bronze  { background: rgba(180,83,9,0.10);  color: #92400e; }
.nmx-score-row--penalty { background: rgba(239,68,68,0.08);  color: var(--nmx-error); }
.nmx-score-row--streak  { background: rgba(79,70,229,0.08);  color: var(--nmx-accent); }
.nmx-dark .nmx-score-row--gold   { color: var(--nmx-gold); }
.nmx-dark .nmx-score-row--bronze { color: #fbbf24; }

/* Example groups */
.nmx-example-groups { display: flex; flex-direction: column; gap: 18px; }
.nmx-example-group-title {
  font-size:   13px;
  font-weight: 700;
  color:       var(--nmx-text-3);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin:      0 0 8px;
}
.nmx-example-cards { display: flex; flex-direction: column; gap: 8px; }
.nmx-example-card {
  border:        1px solid var(--nmx-border);
  border-radius: var(--nmx-radius-sm);
  padding:       12px 14px;
  cursor:        pointer;
  transition:    all 0.15s ease;
  background:    var(--nmx-surface);
}
.nmx-example-card:hover { border-color: var(--nmx-accent); background: var(--nmx-surface-2); }
.nmx-example-card-header {
  display:         flex;
  justify-content: space-between;
  align-items:     center;
  margin-bottom:   6px;
}
.nmx-example-card-title {
  font-size:   14px;
  font-weight: 700;
  color:       var(--nmx-text);
}
.nmx-example-card-toggle {
  font-size: 12px;
  color:     var(--nmx-accent);
}
.nmx-example-seq {
  display:  flex;
  gap:      6px;
  flex-wrap: wrap;
}
.nmx-ex-num {
  min-width:     38px;
  height:        38px;
  border:        1.5px solid var(--nmx-tile-border);
  border-radius: var(--nmx-radius-sm);
  background:    var(--nmx-tile-bg);
  color:         var(--nmx-tile-text);
  font-size:     14px;
  font-weight:   700;
  font-family:   var(--nmx-font-mono);
  display:       flex;
  align-items:   center;
  justify-content: center;
  padding:       0 6px;
}
.nmx-example-card-explanation {
  font-size:   13px;
  color:       var(--nmx-text-2);
  margin:      8px 0 0;
  line-height: 1.45;
  display:     none;
}
.nmx-example-card.nmx-expanded .nmx-example-card-explanation { display: block; }
.nmx-example-card.nmx-expanded .nmx-example-card-toggle { color: var(--nmx-text-3); }

.nmx-tutorial-footer {
  padding:       16px 22px;
  border-top:    1px solid var(--nmx-border);
  flex-shrink:   0;
  display:       flex;
  justify-content: center;
}

/* ── Footer Brand ───────────────────────────────────────────────────────── */
.nmx-footer-brand {
  text-align:  center;
  padding:     14px 16px 4px;
  font-size:   12px;
  color:       var(--nmx-text-3);
  letter-spacing: 0.05em;
  border-top:  1px solid var(--nmx-border);
  margin-top:  8px;
}

/* ── Animations ─────────────────────────────────────────────────────────── */
@keyframes nmx-fadein {
  from { opacity: 0; }
  to   { opacity: 1; }
}
@keyframes nmx-popup {
  from { opacity: 0; transform: scale(0.90) translateY(20px); }
  to   { opacity: 1; transform: scale(1)    translateY(0); }
}
@keyframes nmx-tile-appear {
  from { opacity: 0; transform: translateY(-16px) scale(0.85); }
  to   { opacity: 1; transform: translateY(0)     scale(1); }
}
@keyframes nmx-tile-correct {
  0%   { transform: scale(1);    filter: brightness(1); }
  40%  { transform: scale(1.18); filter: brightness(1.3); }
  100% { transform: scale(1);    filter: brightness(1); }
}
@keyframes nmx-tile-wrong {
  0%,100% { transform: translateX(0); }
  25%      { transform: translateX(-5px); }
  75%      { transform: translateX(5px); }
}
@keyframes nmx-score-bump {
  0%   { transform: scale(1); }
  50%  { transform: scale(1.3); }
  100% { transform: scale(1); }
}
@keyframes nmx-streak-pop {
  0%   { transform: scale(1); }
  50%  { transform: scale(1.5); }
  100% { transform: scale(1); }
}

/* ── Accessibility ──────────────────────────────────────────────────────── */
.nmx-game-wrap *:focus-visible {
  outline:        2px solid var(--nmx-accent);
  outline-offset: 2px;
}
@media (prefers-reduced-motion: reduce) {
  .nmx-game-wrap *, .nmx-game-wrap *::before, .nmx-game-wrap *::after {
    animation-duration:   0.01ms !important;
    transition-duration:  0.01ms !important;
  }
}

/* ── Score notification banner (leaderboard.js) ─────────────────────────── */
.nmx-score-banner {
  position:      fixed;
  bottom:        24px;
  left:          50%;
  transform:     translateX(-50%);
  z-index:       200;
  padding:       14px 28px;
  border-radius: 30px;
  font-size:     15px;
  font-weight:   600;
  font-family:   var(--nmx-font, sans-serif);
  box-shadow:    0 6px 28px rgba(0,0,0,0.25);
  max-width:     90vw;
  text-align:    center;
  transition:    opacity 0.4s ease;
  animation:     nmx-fadein 0.3s ease;
  pointer-events: none;
}
.nmx-score-banner--success {
  background: var(--nmx-success, #10b981);
  color:      #fff;
}
.nmx-score-banner--info {
  background: var(--nmx-accent, #4f46e5);
  color:      #fff;
}

/* ── Leaderboard (standalone shortcode & in-game) ───────────────────────── */
.nmx-leaderboard-wrap {
  font-family: var(--nmx-font, sans-serif);
  max-width:   700px;
  margin:      0 auto;
  padding:     0 0 24px;
}

.nmx-lb-header {
  display:         flex;
  align-items:     center;
  justify-content: space-between;
  flex-wrap:       wrap;
  gap:             12px;
  margin-bottom:   16px;
}
.nmx-lb-title {
  font-size:   20px;
  font-weight: 700;
  margin:      0;
}

.nmx-lb-filters {
  display: flex;
  gap:     6px;
  flex-wrap: wrap;
}
.nmx-lb-filter-btn {
  padding:       5px 14px;
  border-radius: 16px;
  border:        1.5px solid #c7d2fe;
  background:    #fff;
  color:         #4c4a7a;
  font-size:     13px;
  font-weight:   500;
  cursor:        pointer;
  transition:    all 0.15s;
}
.nmx-lb-filter-btn:hover { background: #f1f0fc; border-color: #4f46e5; }
.nmx-lb-filter-btn--active {
  background:   #4f46e5;
  border-color: #4f46e5;
  color:        #fff;
}

.nmx-lb-table-wrap { overflow-x: auto; }

.nmx-lb-table {
  width:           100%;
  border-collapse: collapse;
  font-size:       14px;
}
.nmx-lb-table thead tr {
  background: #f1f0fc;
}
.nmx-lb-table th {
  padding:     10px 14px;
  text-align:  left;
  font-size:   12px;
  font-weight: 700;
  color:       #4c4a7a;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border-bottom: 2px solid #c7d2fe;
}
.nmx-lb-table td {
  padding:    11px 14px;
  border-bottom: 1px solid #ede9fe;
  color:      #1e1b4b;
}
.nmx-lb-row--top td { background: #fdfcff; }
.nmx-lb-rank  { font-size: 18px; width: 48px; }
.nmx-lb-score { font-weight: 700; font-family: 'Courier New', monospace; color: #4f46e5; }
.nmx-lb-level { font-size: 12px; color: #7c7aaa; }
.nmx-lb-streak{ font-size: 13px; }
.nmx-lb-empty { text-align: center; padding: 28px; color: #9ca3af; font-style: italic; }

.nmx-lb-note {
  margin:      16px 0 0;
  font-size:   13px;
  color:       #6b6b9a;
  text-align:  center;
  line-height: 1.5;
}
.nmx-lb-note a { color: #4f46e5; }

/* ═══════════════════════════════════════════════════════════════════════════
   CROSS-BROWSER COMPATIBILITY FIXES
   Targets: Safari (WebKit), Firefox, Chrome, Edge, Kindle Fire Silk
   ═══════════════════════════════════════════════════════════════════════════ */

/* ── Safari / WebKit ────────────────────────────────────────────────────── */

/* Safari doesn't support gap on older flex — use margin fallback */
@supports not (gap: 8px) {
  .nmx-level-selector > * + *  { margin-left: 4px; }
  .nmx-topbar-right    > * + *  { margin-left: 6px; }
  .nmx-action-btns     > * + *  { margin-left: 8px; }
  .nmx-input-slots     > * + *  { margin-left: 10px; }
  .nmx-numpad          > * + *  { margin: 3px; }
}

/* backdrop-filter is now correctly applied on the overlay containers above.
   The inner cards (gameover-inner, tutorial-panel) should NOT have it —
   it was previously misapplied here and has been moved to the containers. */

/* Safari: smooth scrolling in tutorial body */
.nmx-tutorial-body {
  -webkit-overflow-scrolling: touch;
}

/* Safari: font rendering fix for monospace numbers */
.nmx-input-field,
.nmx-score-value,
.nmx-streak-value,
.nmx-timer-text {
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Safari SVG text rendering */
.nmx-sequence-svg text {
  -webkit-user-select: none;
          user-select: none;
}

/* Safari: remove default button styling */
.nmx-btn,
.nmx-icon-btn,
.nmx-level-btn,
.nmx-numpad-btn,
.nmx-player-count-btn,
.nmx-tutorial-close {
  -webkit-appearance: none;
          appearance: none;
}

/* Safari: input styling */
.nmx-input-field,
.nmx-player-name-input {
  -webkit-appearance: none;
          appearance: none;
  border-radius: var(--nmx-radius-tile, 10px);
}

/* ── Firefox ────────────────────────────────────────────────────────────── */

/* Firefox: remove number input spinners */
.nmx-input-field {
  -moz-appearance: textfield;
}

/* Firefox: focus-visible polyfill — FF supports it natively but older FF needs */
.nmx-game-wrap *:focus:not(:focus-visible) {
  outline: none;
}

/* ── Kindle Fire Silk (WebKit-based, ~2012-era engine on older tablets) ─── */
/* Silk doesn't support CSS custom properties on very old devices — provide
   hardcoded fallbacks BEFORE the var() declarations so old engines use them */

.nmx-game-wrap {
  background-color: #f8f7ff; /* fallback before var(--nmx-bg) */
  color: #1e1b4b;            /* fallback before var(--nmx-text) */
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Arial, sans-serif;
}

.nmx-btn--submit,
.nmx-btn--primary {
  background-color: #4f46e5; /* fallback */
  color: #ffffff;
}

.nmx-input-field {
  background-color: #ede9fe; /* fallback */
  border-color: #4f46e5;
  color: #1e1b4b;
}

/* Silk: avoid CSS animations on elements that cause repaints on low-power devices */
@media (max-device-width: 1024px) and (-webkit-min-device-pixel-ratio: 1) {
  .nmx-gameover-inner,
  .nmx-tutorial-panel {
    animation: none;
  }
}

/* ── Edge Legacy (pre-Chromium) ─────────────────────────────────────────── */
/* Edge 16-18: no support for CSS custom properties in media queries */
@supports (-ms-ime-align: auto) {
  .nmx-game-wrap {
    background-color: #f8f7ff;
    color: #1e1b4b;
  }
}

/* ═══════════════════════════════════════════════════════════════════════════
   OFFLINE STATE
   ═══════════════════════════════════════════════════════════════════════════ */

.nmx-offline-banner {
  display:         flex;
  align-items:     center;
  gap:             10px;
  padding:         10px 16px;
  background:      rgba(245,158,11,0.12);
  border-bottom:   1px solid rgba(245,158,11,0.30);
  font-size:       13px;
  color:           #92400e;
  font-family:     var(--nmx-font, sans-serif);
}
.nmx-game-wrap.nmx-dark .nmx-offline-banner {
  color:       #fbbf24;
  background:  rgba(245,158,11,0.08);
}
.nmx-offline-icon { font-size: 16px; flex-shrink: 0; }

/* ═══════════════════════════════════════════════════════════════════════════
   PRINT — hide the game entirely
   ═══════════════════════════════════════════════════════════════════════════ */
@media print {
  .nmx-game-wrap,
  .nmx-leaderboard-wrap { display: none !important; }
}

/* ── Critical: ensure [hidden] always wins over position:absolute overlays ── */
.nmx-game-wrap [hidden],
.nmx-gameover[hidden],
.nmx-tutorial-overlay[hidden] {
  display: none !important;
}

/* Dark mode fallback for overlays outside .nmx-game-wrap */
@media (prefers-color-scheme: dark) {
  :root {
    --nmx-surface:       #1a1830;
    --nmx-surface-2:     #231f3a;
    --nmx-border:        rgba(129,140,248,0.15);
    --nmx-border-strong: rgba(129,140,248,0.35);
    --nmx-text:          #e0deff;
    --nmx-text-2:        #a09ec8;
    --nmx-text-3:        #6764a0;
  }
}