/* ==========================================================================
   ARCADE MODE (SYNTHESIA / GUITAR HERO HIGHWAY & GAMIFICATION)
   ========================================================================== */

.modal-arcade-backdrop {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: #08080c;
  z-index: 10000;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  box-sizing: border-box;
}

.arcade-canvas-wrapper {
  position: relative;
  width: 100%;
  height: 100%;
  overflow: hidden;
}

.arcade-highway-canvas {
  width: 100%;
  height: 100%;
  display: block;
}

/* HUD Top */
.arcade-hud-top {
  position: absolute;
  top: 20px;
  left: 24px;
  right: 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  pointer-events: none;
  z-index: 10;
}

.arcade-score-badge {
  background: rgba(15, 23, 42, 0.85);
  border: 2px solid rgba(56, 189, 248, 0.4);
  box-shadow: 0 0 20px rgba(56, 189, 248, 0.2);
  padding: 8px 18px;
  border-radius: 14px;
  display: flex;
  flex-direction: column;
}

.arcade-score-badge .hud-label {
  font-size: 0.68rem;
  font-weight: 900;
  letter-spacing: 0.1em;
  color: #38bdf8;
}

.arcade-score-badge .hud-value {
  font-size: 1.5rem;
  font-weight: 900;
  font-family: monospace;
  color: #fff;
}

.arcade-song-title-pill {
  background: rgba(0, 0, 0, 0.7);
  border: 1px solid rgba(255, 255, 255, 0.15);
  padding: 8px 18px;
  border-radius: 999px;
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.88rem;
  font-weight: 700;
  color: #f8fafc;
}

.arcade-live-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #22c55e;
  box-shadow: 0 0 8px #22c55e;
}

.arcade-tempo-badge {
  background: rgba(255, 255, 255, 0.1);
  padding: 2px 8px;
  border-radius: 6px;
  font-size: 0.75rem;
  color: #38bdf8;
}

.arcade-combo-badge {
  background: rgba(15, 23, 42, 0.85);
  border: 2px solid rgba(234, 179, 8, 0.4);
  box-shadow: 0 0 20px rgba(234, 179, 8, 0.2);
  padding: 8px 18px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  gap: 12px;
}

.combo-mult {
  font-size: 1.6rem;
  font-weight: 900;
  color: #eab308;
  text-shadow: 0 0 10px #eab308;
}

.combo-info {
  display: flex;
  flex-direction: column;
}

.combo-streak {
  font-size: 1.05rem;
  font-weight: 800;
  color: #fff;
}

.combo-label {
  font-size: 0.65rem;
  font-weight: 800;
  letter-spacing: 0.1em;
  color: var(--text-secondary, #94a3b8);
}

/* Hit Feedback Banner */
.arcade-hit-feedback {
  position: absolute;
  bottom: 160px;
  left: 50%;
  transform: translateX(-50%);
  font-size: 2.2rem;
  font-weight: 900;
  letter-spacing: 0.05em;
  pointer-events: none;
  z-index: 10;
  transition: opacity 0.1s ease;
}

/* HUD Bottom */
.arcade-hud-bottom {
  position: absolute;
  bottom: 24px;
  left: 24px;
  right: 24px;
  display: flex;
  justify-content: center;
  z-index: 10;
}

.arcade-bottom-actions {
  display: flex;
  gap: 12px;
  background: rgba(15, 23, 42, 0.8);
  border: 1px solid rgba(255, 255, 255, 0.1);
  padding: 8px 16px;
  border-radius: 16px;
  backdrop-filter: blur(8px);
}

.btn-arcade-control {
  padding: 8px 16px;
  border-radius: 10px;
  font-size: 0.82rem;
  font-weight: 700;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.15);
  color: #f8fafc;
  cursor: pointer;
  transition: all 0.15s ease;
}

.btn-arcade-control:hover {
  background: rgba(255, 255, 255, 0.18);
}

.btn-arcade-control.active {
  background: #22c55e;
  color: #000;
  border-color: #22c55e;
  box-shadow: 0 0 12px rgba(34, 197, 94, 0.4);
}

.btn-arcade-autoplay {
  background: rgba(56, 189, 248, 0.15);
  border-color: rgba(56, 189, 248, 0.35);
  color: #38bdf8;
}

.btn-arcade-exit {
  background: rgba(239, 68, 68, 0.15);
  border-color: rgba(239, 68, 68, 0.35);
  color: #f87171;
}

/* Results Overlay */
.arcade-results-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(8, 8, 14, 0.92);
  backdrop-filter: blur(16px);
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  animation: resultsPop 0.35s cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes resultsPop {
  0% { transform: scale(0.92); opacity: 0; }
  100% { transform: scale(1); opacity: 1; }
}

.arcade-results-card {
  background: #161722;
  border: 2px solid rgba(56, 189, 248, 0.3);
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.8), 0 0 30px rgba(56, 189, 248, 0.15);
  border-radius: 24px;
  width: 100%;
  max-width: 520px;
  padding: 36px 28px;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
}

.results-trophy-slot {
  font-size: 4rem;
  line-height: 1;
  filter: drop-shadow(0 0 16px rgba(234, 179, 8, 0.6));
  animation: bounceTrophy 1.5s infinite alternate;
}

@keyframes bounceTrophy {
  0% { transform: translateY(0); }
  100% { transform: translateY(-8px); }
}

.results-rank-title {
  margin: 0;
  font-size: 1.35rem;
  font-weight: 900;
  letter-spacing: 0.05em;
}

.results-score-highlight {
  font-size: 2.2rem;
  font-weight: 900;
  font-family: monospace;
  color: #fff;
  background: linear-gradient(90deg, #38bdf8, #818cf8);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.results-stats-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  width: 100%;
  margin: 10px 0;
}

.stat-box {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 14px;
  padding: 12px 10px;
  display: flex;
  flex-direction: column;
}

.stat-val {
  font-size: 1.35rem;
  font-weight: 800;
  color: #f8fafc;
}

.stat-lbl {
  font-size: 0.68rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  color: var(--text-secondary, #94a3b8);
  margin-top: 2px;
}

.results-actions-row {
  display: flex;
  gap: 12px;
  width: 100%;
  margin-top: 8px;
}

.btn-results-action {
  flex: 1;
  padding: 12px 0;
  border-radius: 12px;
  font-weight: 800;
  font-size: 0.9rem;
  cursor: pointer;
  transition: all 0.2s ease;
}

.btn-results-action.secondary {
  background: rgba(255, 255, 255, 0.08);
  color: #f8fafc;
  border: 1px solid rgba(255, 255, 255, 0.15);
}

.btn-results-action.secondary:hover {
  background: rgba(255, 255, 255, 0.15);
}

.btn-results-action.primary {
  background: #38bdf8;
  color: #000;
  border: none;
  box-shadow: 0 4px 16px rgba(56, 189, 248, 0.4);
}

.btn-results-action.primary:hover {
  background: #7dd3fc;
  transform: translateY(-1px);
}