/* ============================================================
   Don't Blink — style.css
   ============================================================ */

:root {
  --dark-bg: #08080f;
  --overlay-bg: rgba(8, 8, 15, 0.96);
  --text: #ffffff;
  --text-muted: rgba(255, 255, 255, 0.5);
  --text-dim: rgba(255, 255, 255, 0.25);
  --accent: #4cc9f0;
  --danger: #ff4d6d;
  --success: #4ade80;
  --radius: 12px;
  --radius-sm: 8px;
  --radius-pill: 999px;
}

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

html, body {
  height: 100%;
  overflow: hidden;
  background: var(--dark-bg);
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
  -webkit-font-smoothing: antialiased;
  color: var(--text);
}

/* ── Screen System ──────────────────────────────────────── */
.screen {
  position: fixed;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
}

/* Overlay screens (intro, results) sit on top */
#intro,
#results {
  background: var(--overlay-bg);
  backdrop-filter: blur(2px);
  z-index: 10;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.35s ease;
}

#intro.active,
#results.active {
  opacity: 1;
  pointer-events: auto;
}

/* Game screen is always behind */
#game {
  z-index: 1;
  background-color: #1a1a2e;
  cursor: crosshair;
  user-select: none;
  -webkit-user-select: none;
  /* No transition by default — JS controls this explicitly */
}

/* ── Overlay Content Layout ─────────────────────────────── */
.overlay-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.25rem;
  padding: 2rem 1.5rem;
  width: 100%;
  max-width: 480px;
}

/* ── Intro ──────────────────────────────────────────────── */
.title {
  font-size: clamp(3.5rem, 14vw, 6rem);
  font-weight: 900;
  letter-spacing: -0.04em;
  line-height: 0.9;
  color: var(--text);
}

.subtitle {
  font-size: clamp(0.95rem, 3vw, 1.1rem);
  color: var(--text-muted);
  letter-spacing: 0.05em;
  text-transform: uppercase;
  font-weight: 500;
}

.instructions {
  font-size: clamp(1rem, 3.5vw, 1.15rem);
  color: var(--text-muted);
  line-height: 1.7;
}

.warning-hint {
  color: var(--danger);
  font-weight: 600;
}

.best-score {
  font-size: 0.875rem;
  color: var(--text-dim);
  min-height: 1.2em;
}

.footer-links {
  display: flex;
  gap: 1.25rem;
  flex-wrap: wrap;
  justify-content: center;
}

.privacy-link {
  font-size: 0.75rem;
  color: var(--text-dim);
  text-decoration: none;
  letter-spacing: 0.03em;
  transition: color 0.15s ease;
}
.privacy-link:hover { color: var(--text-muted); }

.btn-view-lb {
  background: none;
  border: none;
  color: var(--text-dim);
  font-family: inherit;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  cursor: pointer;
  padding: 0.2rem 0.5rem;
  transition: color 0.15s ease;
  -webkit-tap-highlight-color: transparent;
}
.btn-view-lb:hover { color: var(--text-muted); }

/* ── Buttons ────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: none;
  border-radius: var(--radius-pill);
  font-family: inherit;
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  cursor: pointer;
  padding: 0.85rem 2.5rem;
  min-width: 140px;
  min-height: 52px;
  transition: transform 0.12s ease, opacity 0.12s ease, box-shadow 0.12s ease;
  -webkit-tap-highlight-color: transparent;
}

.btn:active {
  transform: scale(0.96);
}

.btn-primary {
  background: #ffffff;
  color: #0a0a14;
  box-shadow: 0 4px 20px rgba(255, 255, 255, 0.15);
}

.btn-primary:hover {
  box-shadow: 0 4px 28px rgba(255, 255, 255, 0.25);
}

.btn-secondary {
  background: transparent;
  color: var(--text);
  border: 2px solid rgba(255, 255, 255, 0.3);
}

.btn-secondary:hover {
  border-color: rgba(255, 255, 255, 0.6);
}

.btn-row {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
  justify-content: center;
}

/* ── Game Screen Elements ───────────────────────────────── */
.round-indicator {
  position: absolute;
  top: 1.5rem;
  left: 50%;
  transform: translateX(-50%);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.7);
  background: rgba(0, 0, 0, 0.25);
  padding: 0.4rem 1rem;
  border-radius: var(--radius-pill);
  backdrop-filter: blur(4px);
  pointer-events: none;
}

.game-message {
  pointer-events: none;
}

#messageText {
  display: block;
  font-size: clamp(1.6rem, 6vw, 2.75rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  color: #ffffff;
  text-shadow:
    0 2px 12px rgba(0, 0, 0, 0.4),
    0 0 40px rgba(0, 0, 0, 0.2);
  line-height: 1.2;
}

/* Message animation */
.game-message.pop #messageText {
  animation: msgPop 0.3s cubic-bezier(0.22, 1, 0.36, 1) both;
}

@keyframes msgPop {
  from {
    transform: scale(0.75);
    opacity: 0;
  }
  to {
    transform: scale(1);
    opacity: 1;
  }
}

/* Too early shake */
#game.shake {
  animation: shake 0.45s cubic-bezier(0.36, 0.07, 0.19, 0.97) both;
}

@keyframes shake {
  10%, 90%  { transform: translateX(-4px); }
  20%, 80%  { transform: translateX(6px);  }
  30%, 50%, 70% { transform: translateX(-8px); }
  40%, 60%  { transform: translateX(8px);  }
}

/* Score dots */
.score-dots {
  position: absolute;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 0.5rem;
  pointer-events: none;
}

.score-dot {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  padding: 0.3rem 0.65rem;
  border-radius: var(--radius-pill);
  background: rgba(255, 255, 255, 0.15);
  color: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(4px);
  border: 1px solid rgba(255, 255, 255, 0.15);
  min-width: 44px;
}

.score-dot.empty {
  background: rgba(255, 255, 255, 0.06);
  border-color: rgba(255, 255, 255, 0.08);
  color: transparent;
  width: 12px;
  min-width: 12px;
  padding: 0;
  height: 12px;
  border-radius: 50%;
  align-self: center;
}

.score-dot.new {
  animation: dotPop 0.3s cubic-bezier(0.22, 1, 0.36, 1) both;
}

@keyframes dotPop {
  from { transform: scale(0); opacity: 0; }
  to   { transform: scale(1); opacity: 1; }
}

/* ── Results Screen ─────────────────────────────────────── */

/* Allow scrolling when leaderboard makes content taller than viewport */
#results .overlay-content {
  overflow-y: auto;
  max-height: 100dvh;
  scrollbar-width: none;
}
#results .overlay-content::-webkit-scrollbar { display: none; }

.results-label {
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-muted);
}

.final-score {
  font-size: clamp(3.5rem, 16vw, 6rem);
  font-weight: 900;
  letter-spacing: -0.04em;
  color: var(--accent);
  line-height: 1;
}

.score-breakdown {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.4rem;
}

.round-pill {
  font-size: 0.78rem;
  font-weight: 600;
  padding: 0.3rem 0.75rem;
  background: rgba(255, 255, 255, 0.07);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-pill);
  color: var(--text-muted);
}

/* Rank display */
.rank-display {
  font-size: 1rem;
  font-weight: 700;
  min-height: 1.4em;
  letter-spacing: 0.01em;
}

.rank-display.preview   { color: var(--text-muted); }
.rank-display.confirmed { color: var(--accent); }
.rank-display.unranked  { color: var(--text-dim); }

/* Name + save */
.save-row {
  display: flex;
  gap: 0.5rem;
  width: 100%;
  max-width: 340px;
}

.name-input {
  flex: 1;
  min-width: 0;
  background: rgba(255, 255, 255, 0.07);
  border: 1.5px solid rgba(255, 255, 255, 0.15);
  border-radius: var(--radius);
  color: var(--text);
  font-family: inherit;
  font-size: 1rem;
  font-weight: 500;
  padding: 0.8rem 1rem;
  text-align: center;
  transition: border-color 0.2s ease, background 0.2s ease;
  outline: none;
  -webkit-appearance: none;
}

.btn-save {
  flex-shrink: 0;
  background: rgba(255, 255, 255, 0.1);
  border: 1.5px solid rgba(255, 255, 255, 0.2);
  border-radius: var(--radius);
  color: var(--text);
  font-family: inherit;
  font-size: 0.9rem;
  font-weight: 700;
  padding: 0 1.1rem;
  cursor: pointer;
  white-space: nowrap;
  transition: border-color 0.2s ease, color 0.2s ease, background 0.2s ease;
  -webkit-tap-highlight-color: transparent;
}

.btn-save:hover:not(:disabled) {
  border-color: rgba(255, 255, 255, 0.45);
  background: rgba(255, 255, 255, 0.15);
}

.btn-save:disabled {
  color: var(--success);
  border-color: var(--success);
  cursor: default;
  opacity: 0.85;
}

.name-input::placeholder {
  color: var(--text-dim);
}

.name-input:focus {
  border-color: rgba(255, 255, 255, 0.4);
  background: rgba(255, 255, 255, 0.1);
}

/* Share feedback */
.share-feedback {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--success);
  opacity: 0;
  transform: translateY(4px);
  transition: opacity 0.2s ease, transform 0.2s ease;
  min-height: 1.2em;
}

.share-feedback.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Leaderboard */
.leaderboard {
  width: 100%;
  max-width: 360px;
}

.lb-header {
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-dim);
  margin-bottom: 0.5rem;
  text-align: center;
}

.lb-row {
  display: grid;
  grid-template-columns: 2.5rem 1fr auto;
  align-items: center;
  gap: 0 0.5rem;
  padding: 0.42rem 0.6rem;
  border-radius: 6px;
  font-size: 0.84rem;
  color: var(--text-muted);
}

.lb-row.lb-you {
  background: rgba(76, 201, 240, 0.1);
  color: var(--text);
}

.lb-rank {
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--text-dim);
}

.lb-row.lb-you .lb-rank {
  color: var(--accent);
}

.lb-name {
  text-align: left;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.lb-score {
  font-weight: 700;
  color: var(--text);
  font-variant-numeric: tabular-nums;
}

.lb-sep {
  text-align: center;
  color: var(--text-dim);
  font-size: 0.8rem;
  padding: 0.15rem 0;
  letter-spacing: 0.1em;
}

.lb-empty {
  font-size: 0.85rem;
  color: var(--text-dim);
  text-align: center;
  padding: 0.5rem 0;
}

/* ── Leaderboard browse mode (no score context) ─────────── */
#results[data-browse] .results-label,
#results[data-browse] .final-score,
#results[data-browse] .rank-display,
#results[data-browse] .score-breakdown,
#results[data-browse] .save-row,
#results[data-browse] .share-feedback,
#results[data-browse] #shareBtn { display: none; }

/* ── Responsive tweaks ──────────────────────────────────── */
@media (max-width: 400px) {
  .overlay-content {
    gap: 1rem;
    padding: 1.5rem 1.25rem;
  }

  .btn {
    padding: 0.8rem 2rem;
    font-size: 0.95rem;
  }
}

@media (max-height: 600px) {
  .overlay-content {
    gap: 0.75rem;
  }

  .title {
    font-size: clamp(2.5rem, 10vw, 4rem);
  }

  .instructions {
    display: none;
  }
}