/* ── Sixty — sequence memory game ──────────────────────────────────────── */

:root {
  --sixty-bg: #0f172a;
  --sixty-surface: #1e293b;
  --sixty-border: rgba(255,255,255,0.08);
  --sixty-text: #f1f5f9;
  --sixty-muted: #64748b;
  --sixty-radius: 12px;
}

/* ── Page shell ─────────────────────────────────────────────────────────── */
#sixty-wrap {
  display: flex;
  flex-direction: column;
  align-items: center;
  min-height: calc(100dvh - 60px);
  background: var(--sixty-bg);
  padding: 16px 20px calc(32px + env(safe-area-inset-bottom));
  font-family: 'DM Sans', sans-serif;
  color: var(--sixty-text);
  user-select: none;
  -webkit-user-select: none;
}

/* ── Logo ───────────────────────────────────────────────────────────────── */
#sixty-logo-wrap {
  margin-bottom: 20px;
}
#sixty-logo {
  height: 36px;
  display: block;
}

/* ── Score bar ──────────────────────────────────────────────────────────── */
#sixty-scorebar {
  display: flex;
  gap: 32px;
  align-items: center;
  justify-content: center;
  margin-bottom: 10px;
}
.sixty-stat {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
}
.sixty-stat-label {
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--sixty-muted);
}
.sixty-stat-value {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--sixty-text);
  line-height: 1;
  font-variant-numeric: tabular-nums;
}
.sixty-stat-goal .sixty-stat-value {
  color: var(--sixty-muted);
}

/* ── Status ─────────────────────────────────────────────────────────────── */
#sixty-status {
  font-size: 0.8rem;
  color: var(--sixty-muted);
  margin-bottom: 24px;
  min-height: 1.2em;
  text-align: center;
  letter-spacing: 0.03em;
}

/* ── Button grid ────────────────────────────────────────────────────────── */
#sixty-grid-wrap {
  position: relative;
  width: 100%;
  max-width: 320px;
  margin-bottom: 28px;
}

#sixty-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
  width: 100%;
}

.sixty-btn {
  aspect-ratio: 1 / 1;
  border: none;
  border-radius: var(--sixty-radius);
  cursor: pointer;
  transition: transform 0.08s, box-shadow 0.08s, background-color 0.06s;
  -webkit-tap-highlight-color: transparent;
  outline: none;
  position: relative;
}

.sixty-btn[data-id="1"] { background: #E63946; }
.sixty-btn[data-id="2"] { background: #2196F3; }
.sixty-btn[data-id="3"] { background: #4CAF50; }
.sixty-btn[data-id="4"] { background: #FF9800; }
.sixty-btn[data-id="5"] { background: #9C27B0; }
.sixty-btn[data-id="6"] { background: #FFEB3B; }

.sixty-btn.lit[data-id="1"] { background: #FF6B75; box-shadow: 0 0 28px 6px rgba(255,107,117,0.65); }
.sixty-btn.lit[data-id="2"] { background: #64B5F6; box-shadow: 0 0 28px 6px rgba(100,181,246,0.65); }
.sixty-btn.lit[data-id="3"] { background: #81C784; box-shadow: 0 0 28px 6px rgba(129,199,132,0.65); }
.sixty-btn.lit[data-id="4"] { background: #FFB74D; box-shadow: 0 0 28px 6px rgba(255,183,77,0.65); }
.sixty-btn.lit[data-id="5"] { background: #CE93D8; box-shadow: 0 0 28px 6px rgba(206,147,216,0.65); }
.sixty-btn.lit[data-id="6"] { background: #FFF176; box-shadow: 0 0 28px 6px rgba(255,241,118,0.65); }

.sixty-btn.dark {
  background: #1e293b !important;
  box-shadow: none !important;
}

.sixty-btn:active { transform: scale(0.95); }
.sixty-btn[disabled] { cursor: default; }

/* ── Start button ───────────────────────────────────────────────────────── */
#sixty-start-btn {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  background: #fff;
  color: #0f172a;
  border: none;
  border-radius: 28px;
  padding: 14px 52px;
  font-family: 'DM Sans', sans-serif;
  font-size: 1.05rem;
  font-weight: 800;
  cursor: pointer;
  letter-spacing: 0.03em;
  box-shadow: 0 4px 24px rgba(0,0,0,0.45);
  transition: opacity 0.15s, transform 0.1s;
  z-index: 10;
  white-space: nowrap;
}
#sixty-start-btn:active { transform: translate(-50%, -50%) scale(0.97); opacity: 0.9; }
#sixty-start-btn.hidden { display: none; }

/* ── End-screen overlay ─────────────────────────────────────────────────── */
#sixty-overlay {
  position: fixed;
  inset: 0;
  background: rgba(15,23,42,0.88);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 100;
  animation: fadeIn 0.3s ease;
}
#sixty-overlay.hidden { display: none; }

#sixty-modal {
  background: #1e293b;
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: 20px;
  padding: 36px 32px;
  max-width: 340px;
  width: 90%;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  text-align: center;
}

#sixty-modal-emoji {
  font-size: 3rem;
  line-height: 1;
  margin-bottom: 4px;
}
#sixty-modal-title {
  font-family: 'DM Serif Display', serif;
  font-size: 1.8rem;
  color: var(--sixty-text);
  margin: 0;
}
#sixty-modal-score {
  font-size: 1rem;
  color: var(--sixty-muted);
  margin: 0;
}
#sixty-modal-best {
  font-size: 0.85rem;
  color: var(--sixty-muted);
  margin: 0;
}
#sixty-modal-btns {
  display: flex;
  gap: 10px;
  margin-top: 12px;
  flex-wrap: wrap;
  justify-content: center;
}
#sixty-share-btn, #sixty-again-btn {
  padding: 10px 22px;
  border-radius: 24px;
  border: none;
  font-family: 'DM Sans', sans-serif;
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  transition: opacity 0.15s;
}
#sixty-share-btn { background: #4CAF50; color: #fff; }
#sixty-again-btn { background: rgba(255,255,255,0.1); color: var(--sixty-text); }
#sixty-share-btn:active, #sixty-again-btn:active { opacity: 0.8; }

/* ── Animations ─────────────────────────────────────────────────────────── */
@keyframes fadeIn {
  from { opacity: 0; transform: scale(0.97); }
  to   { opacity: 1; transform: scale(1); }
}