:root {
    --bg: #000;
    --fg: #f5f5f5;
    --muted: #bdbdbd;
    --card: #111;
    --border: #1f1f1f;
    --accent: #ffd166;
    --warning: #ffd166; /* same as accent */
    --danger: #ff4d4d;
  }
  

  * { box-sizing: border-box; }
html, body {
    height: 100%;
    margin: 0;
    padding: 0;
    background: var(--bg);
    color: var(--fg);
    font-family: system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, sans-serif;
    overscroll-behavior: none;          /* prevent browser pull-to-refresh during drawing */
}
  
  .app {
    display: grid;
    grid-template-rows: auto 1fr auto;
    /* fallback for older browsers */
    /* better mobile vh */
    height: 100svh;
    min-height: 100dvh;
    user-select: none;                  /* avoid accidental text selection while drawing */
    -webkit-user-select: none;          /* iOS Safari */
    -webkit-tap-highlight-color: transparent;
}

  /* Prefer modern dynamic units when available */
  @supports (height: 100dvh) {
    .app {
      height: 100svh;     /* ‘small’ viewport so footer never gets pushed off */
      min-height: 100dvh; /* dynamic viewport for better iOS behavior */
    }
  }
  
  /* Header */
  .header {
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 16px;
    align-items: center;
    padding: 12px 16px;
    background: var(--card);
    border-bottom: 1px solid var(--border);
  }
  
  .brand {
    display: inline-flex;
    align-items: center;
    gap: 10px;
  }
  
  .logo {
    width: 48px;
    height: 48px;
    object-fit: contain;
  }
  
  .title {
        font-family: 'Lacquer', system-ui;
        font-family: 'Coming Soon', system-ui;
        font-size: 2.5rem;
        font-weight: normal;
        letter-spacing: 1px;
    font-size:30px;
    font-weight: bold;
    margin: 0;

  }
  
  /* HUD */
  .hud {
    display: grid;
    grid-auto-flow: column;
    gap: 12px;
    align-items: center;
  }
  
  .hud-item {
    background: #0b0b0b;
    border: 1px solid var(--border);
    border-radius: 999px;
    padding: 8px 14px;
    font-size: 0.95rem;
    color: var(--muted);
    display: inline-flex;
    align-items: center;
    gap: 6px;
  }

  /* Make timer text a bit bigger */
  .hud-item.timer { font-size: 1.1rem; }
  
  .hud-item .value {
    color: var(--fg);
    font-weight: 600;
  }

  /* Timer flash animations */
  @keyframes timerFlashWarn {
    0%   { box-shadow: 0 0 0 0 rgba(255, 209, 102, 0.8); }
    100% { box-shadow: 0 0 0 24px rgba(255, 209, 102, 0); }
  }
  @keyframes timerFlashDanger {
    0%   { box-shadow: 0 0 0 0 rgba(255, 77, 77, 0.85); }
    100% { box-shadow: 0 0 0 24px rgba(255, 77, 77, 0); }
  }

  /* Apply flash (short, non-persistent) */
  .hud-item.timer.flash-warning {
    animation: timerFlashWarn 600ms ease-out;
  }
  .hud-item.timer.flash-danger {
    animation: timerFlashDanger 600ms ease-out;
  }

  /* Continuous pulse from 3s to 0s (same color as 10s warning) */
  .hud-item.timer.timer-danger-pulse {
    animation: timerFlashWarn 500ms ease-out infinite;
  }
  
  /* Let the 1fr middle track actually shrink on mobile */
  .stage {
    position: relative;
    overflow: hidden;
    min-height: 0;        /* IMPORTANT so the 1fr track can shrink */
    overscroll-behavior: contain;           /* modern browsers */
    touch-action: none;                     /* ensure gestures don't scroll stage */
  }

  /* Canvas fills whatever is available inside .stage */
  .canvas {
    width: 100%;
    height: 100%;
    display: block;
    background: #070707;
    cursor: crosshair;
    touch-action: none;
    -ms-touch-action: none;                 /* legacy Edge */  
    user-select: none;                      /* prevent text selection */
    -webkit-user-select: none;              /* iOS Safari */
    -webkit-touch-callout: none;            /* no long-press menu on iOS */
    -webkit-tap-highlight-color: transparent; /* no blue flash on tap */

  }
  
  /* Footer */
  .footer {
    background: var(--card);
    border-top: 1px solid var(--border);
    padding: 12px 16px calc(12px + env(safe-area-inset-bottom));
    text-align: center;
  }
  
  .controls {
    display: flex;
    gap: 12px;
    justify-content: center;
    flex-wrap: wrap;             /* allow wrapping on narrow phones */
  }
  
  @media (max-width: 480px) {
    .btn {
      flex: 1 1 45%;             /* two buttons per row if needed */
      min-width: 140px;
    }
  }

  .btn {
    appearance: none;
    border: 1px solid var(--border);
    background: #181818;
    color: var(--fg);
    padding: 14px 24px; /* bigger for touch */
    font-size: 1rem;
    font-weight: 600;
    border-radius: 12px;
    cursor: pointer;
    transition: transform 0.02s ease, background 0.15s ease, border-color 0.15s ease;
  }
  .btn:hover { background: #202020; border-color: #2a2a2a; }
  .btn:active { transform: translateY(1px); }
  .btn.primary {
    background: var(--accent);
    color: #000;
    border-color: #d5b34c;
  }
  
  .copyright {
    font-size: 0.75rem;
    color: var(--muted);
    margin: 0;
    margin-top: 6px;
  }
  
  /* Responsive */
  @media (max-width: 640px) {
    .header {
      grid-template-columns: 1fr;
      gap: 8px;
    }
    .hud {
      grid-auto-flow: row;
      grid-template-columns: repeat(3, 1fr);
      gap: 8px;
    }
    .hud-item {
      justify-content: center;
      border-radius: 12px;
    }
  }

  /* Intro overlay (first-load) */
  #introOverlay {
    position: fixed;
    inset: 0;
    display: none;              /* JS toggles to grid when open */
    place-items: center;
    background: rgba(0,0,0,0.65);
    z-index: 70;                /* above result and score overlays */
    padding: 16px;
    touch-action: none;
  }
  #introOverlay .intro-panel {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 16px;
    width: min(720px, 96vw);
    max-width: 760px;
    padding: 20px 16px calc(20px + env(safe-area-inset-bottom));
    text-align: center;
  }
  .intro-brand {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    margin-bottom: 8px;
  }
  .intro-logo {
    width: 96px;
    height: 96px;
    object-fit: contain;
  }
  .intro-title {
    font-family: 'Coming Soon', system-ui;
    font-size: 2rem;
    font-weight: 700;
    letter-spacing: 0.5px;
    margin: 0;
  }
  .intro-text {
    margin: 8px 0 16px;
  }
  .intro-text p {
    margin: 0 0 10px; /* base spacing between lines */
    color: var(--muted);
  }
  /* Provide extra breathing room like double <br/> after 1st and last paragraphs */
  .intro-text p:first-child { margin-bottom: 18px; }
  .intro-text p:last-child { margin-bottom: 18px; }
  .intro-text ul {
    margin: 0;
    padding-left: 20px;
    text-align: left;
  }
  .intro-text li {
    margin: 6px 0;
  }
  .intro-actions {
    display: flex;
    justify-content: center;
    padding-top:10px;
  }

  #resultOverlay {
    position: fixed;
    inset: 0;
    display: none;               /* JS toggles to grid when open */
    place-items: center;
    background: rgba(0,0,0,0.7);
    z-index: 50;
    touch-action: none;                      /* prevent scroll while overlay shown */
  }
  #resultOverlay .overlay-panel {
    background: #151515;
    border: 1px solid #222;
    border-radius: 16px;
    padding: 20px; /* roomier card */
    width: min(280px, 96vw); /* enforce wider card like score panel */
    max-width: 380px; /* cap for very wide screens */
    margin: 16px;
    text-align: center;
  }
  #resultOverlay .overlay-text {
    font-size: 1.25rem;       /* make main result bigger */
    font-weight: 700;         /* emphasize Correct/Incorrect */
    color: #f5f5f5;
    margin-bottom: 20px;      /* add a bit more breathing room */
  }
  /* Clue presentation */
  #resultOverlay .overlay-text.clue { margin-bottom: 24px; }
  #resultOverlay .overlay-text.clue .clue-lead {
    font-size: 1rem;
    font-weight: 600;
    color: var(--muted);
    margin-bottom: 8px;
  }
  #resultOverlay .overlay-text.clue .clue-word {
    font-size: 1.9rem;
    font-weight: 800;
    line-height: 1.25;
  }
  @media (max-width: 480px) {
    #resultOverlay .overlay-text.clue .clue-word { font-size: 1.6rem; }
  }

  /* Result presentation */
  #resultOverlay .overlay-text.result { margin-bottom: 20px; }
  #resultOverlay .overlay-text.result .result-lead {
    font-size: 1rem;
    font-weight: 600;
    color: var(--muted);
    margin-bottom: 8px;
  }
  #resultOverlay .overlay-text.result .result-guess {
    font-size: 1.9rem;
    font-weight: 800;
    line-height: 1.25;
  }
  @media (max-width: 480px) {
    #resultOverlay .overlay-text.result .result-guess { font-size: 1.6rem; }
  }
  #resultOverlay .overlay-details {
    font-size: 0.85rem;
    color: var(--muted);
    margin: 10px 0 14px;  /* increase space below main result */
    line-height: 1.5;
  }
  /* Structured spacing inside overlay details (replaces <br>) */
  #resultOverlay .overlay-details .details-label {
    display: block;
    margin-bottom: 6px;   /* similar to a single line break */
    font-weight: 600;
  }
  #resultOverlay .overlay-details .details-body {
    display: block;
  }

  /* Make prompt text bigger, centered, and bold */
#promptText {
  flex: 1;                   /* let it expand in the HUD grid */
  text-align: center;
}
#promptText .value {
  font-weight: 700;
  color: #ffd166;            /* accent color */
  transition: color 0.3s ease;
}

/* Highlight animation */
@keyframes promptFlash {
  0%   { background-color: rgba(255, 209, 102, 0.3); }
  100% { background-color: transparent; }
}
.prompt-highlight {
  animation: promptFlash 0.8s ease-out;
  border-radius: 8px;
}

.bonus-flash {
  margin-left: 8px;
  font-size: 1rem;
  font-weight: 700;
  color: #4caf50; /* green */
  animation: bonusFade 1s ease-out forwards;
}

@keyframes bonusFade {
  0%   { opacity: 1; transform: translateY(-4px) scale(1); }
  100% { opacity: 0; transform: translateY(-12px) scale(0.9); }
}

/* Score overlay */
#scoreOverlay {
  position: fixed;
  inset: 0;
  display: none;              /* JS toggles to block or grid */
  place-items: center;
  background: rgba(0,0,0,0.65);
  z-index: 60;
  padding: 16px;
  touch-action: none;                        /* modal should not allow background scroll */
}

#scoreOverlay .score-panel {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 16px;
  width: min(720px, 96vw);
  max-height: calc(100svh - 48px - env(safe-area-inset-bottom));
  overflow: auto;
  padding: 20px 16px calc(20px + env(safe-area-inset-bottom));
}

.score-title {
  margin: 0 0 12px 0;
  font-size: 1.4rem;
  text-align: center;
}

.score-subtitle {
  margin: 11px 0 8px; /* +7px extra space from score block */
  font-size: 1.1rem;
  font-weight: 700;
  text-align: center; /* center the leaderboard heading */
}

.leaderboard {
  width: 100%;
  border-collapse: collapse;
  margin: 8px 0 16px;
  font-variant-numeric: tabular-nums;
}
.leaderboard th,
.leaderboard td {
  padding: 10px 8px;
  border-bottom: 1px solid var(--border);
  text-align: left;
}
.leaderboard th { color: var(--muted); font-weight: 600; }
.leaderboard tr:nth-child(odd) td { background: #0b0b0b; }

.highscore-form {
  display: grid;
  grid-template-columns: 1fr auto auto; /* name input + Save + Skip */
  gap: 10px;
  align-items: center;
  margin: 6px 0 16px;
}
.highscore-form label {
  grid-column: 1 / -1;
  font-size: 0.95rem;
  color: var(--muted);
}
.highscore-form input {
  appearance: none;
  border: 1px solid var(--border);
  background: #181818;
  color: var(--fg);
  border-radius: 10px;
  padding: 12px 12px;
  font-size: 1rem;
  user-select: text;                         /* allow text selection in inputs */
  -webkit-user-select: text;
  /* Allow shrinking inside CSS grid to avoid overflow on small screens */
  min-width: 0;
}

#playAgainBtn {
  width: auto;
  display: block;
  margin: 12px auto 0; /* center horizontally inside overlay */
}

.highscore-congrats {
  /* Remove background highlight effect */
  background: transparent;
  border: none;
  border-radius: 0;
  padding: 0;
  margin-bottom: 12px;
  color: var(--fg);
  font-weight: 600;
  text-align: center;
}

.highscore-congrats .final-score {
  color: var(--accent);
  font-weight: 800;
  margin-bottom: 16px;
  font-size: 1.45rem;
}

/* Make the high score form mobile-friendly */
@media (max-width: 520px) {
  .highscore-form {
    /* Place input on its own row, buttons below */
    grid-template-columns: 1fr 1fr;
    gap: 8px;
  }
  .highscore-form label,
  .highscore-form input {
    grid-column: 1 / -1; /* span both columns */
  }
  .highscore-form .btn {
    /* Avoid global mobile min-width from .btn rule and make buttons fit columns */
    min-width: 0;
    width: 100%;
  }
}