:root {
  --bg: #0b0d10;
--accent: #c97300;
--accent-2: #3f9c1c;
  --accent-3: #ffd23f;
  --text: #f4f1ea;
  --text-dim: #9aa0a6;
  --panel-bg: rgba(12, 14, 18, 0.72);
  --danger: #ff3b3b;
  --font-display: 'Bungee', 'Arial Black', sans-serif;
  --font-body: 'Inter', system-ui, -apple-system, sans-serif;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html, body {
  width: 100%;
  height: 100%;
  overflow: hidden;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
}

#app {
  position: relative;
  width: 100vw;
  height: 100vh;
}

/* ---------- Stage (video + canvases) ---------- */
#stage {
  position: absolute;
  inset: 0;
  overflow: hidden;
  background: #000;
}

#stage::after {
  /* subtle vignette to focus attention toward center */
  content: '';
  position: absolute;
  inset: 0;
  pointer-events: none;
  background: radial-gradient(ellipse at 50% 50%, transparent 55%, rgba(0, 0, 0, 0.55) 100%);
  z-index: 2;
}

#webcam {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transform: scaleX(-1); /* mirror for natural interaction */
  filter: brightness(0.55) saturate(1.15) contrast(1.05);
}

#game-canvas,
#overlay-canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  transform: scaleX(-1); /* mirror to match video */
}

#overlay-canvas {
  pointer-events: none;
}

/* ---------- HUD ---------- */
#hud {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  display: flex;
  justify-content: space-between;
  padding: 18px 24px;
  z-index: 10;
  font-family: var(--font-display);
  letter-spacing: 0.05em;
  pointer-events: none;
}

.hud-block {
  display: flex;
  flex-direction: column;
  align-items: center;
  background: var(--panel-bg);
  border: 2px solid rgba(255, 255, 255, 0.08);
  border-radius: 14px;
  padding: 8px 18px;
  min-width: 90px;
  backdrop-filter: blur(10px) saturate(1.4);
  box-shadow:
    0 8px 24px rgba(0, 0, 0, 0.35),
    inset 0 1px 0 rgba(255, 255, 255, 0.06);
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
  animation: hud-drop 0.5s cubic-bezier(0.2, 0.9, 0.3, 1.2) backwards;
}

#score-block { animation-delay: 0.05s; }
#combo-block { animation-delay: 0.12s; }
#lives-block { animation-delay: 0.19s; }

@keyframes hud-drop {
  from {
    opacity: 0;
    transform: translateY(-24px) scale(0.9);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

.hud-label {
  font-size: 0.6rem;
  color: var(--text-dim);
  text-transform: uppercase;
  font-family: var(--font-body);
  letter-spacing: 0.12em;
}

.hud-value {
  font-size: 1.4rem;
  transition: transform 0.15s ease;
}

/* Score pop whenever the number changes (toggle .bump via JS if desired) */
.hud-value.bump {
  animation: value-bump 0.28s ease;
}

@keyframes value-bump {
  0% { transform: scale(1); }
  40% { transform: scale(1.35); }
  100% { transform: scale(1); }
}

#lives-block .hud-value {
  letter-spacing: 0.2em;
}

#lives-block.low-lives .hud-value {
  animation: pulse-danger 0.9s ease-in-out infinite;
}

@keyframes pulse-danger {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.55; transform: scale(1.12); }
}

/* ---------- Screens ---------- */
.screen {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 20;
  background: rgba(5, 6, 8, 0.74);
  backdrop-filter: blur(8px);
  animation: screen-fade 0.35s ease;
}

@keyframes screen-fade {
  from { opacity: 0; }
  to { opacity: 1; }
}

.screen.hidden {
  display: none;
}

.panel {
  position: relative;
  background: var(--panel-bg);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 22px;
  padding: 44px 48px;
  max-width: 480px;
  width: 90%;
  text-align: center;
  box-shadow:
    0 30px 80px rgba(0, 0, 0, 0.55),
    inset 0 1px 0 rgba(255, 255, 255, 0.08);
  backdrop-filter: blur(14px) saturate(1.3);
  overflow: hidden;
  animation: panel-in 0.5s cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes panel-in {
  from {
    opacity: 0;
    transform: translateY(24px) scale(0.96);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

.panel h1 {
  font-family: var(--font-display);
  font-size: 2.6rem;
  letter-spacing: 0.08em;
  margin-bottom: 12px;
}

.tagline {
  color: var(--text-dim);
  margin-bottom: 20px;
  font-size: 1rem;
}

.instructions {
  list-style: none;
  text-align: left;
  margin: 0 0 28px;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.instructions li {
  font-size: 0.92rem;
  color: var(--text);
  padding-left: 22px;
  position: relative;
  line-height: 1.4;
  opacity: 0;
  animation: li-slide-in 0.45s ease forwards;
}

.instructions li:nth-child(1) { animation-delay: 0.15s; }
.instructions li:nth-child(2) { animation-delay: 0.25s; }
.instructions li:nth-child(3) { animation-delay: 0.35s; }
.instructions li:nth-child(4) { animation-delay: 0.45s; }
.instructions li:nth-child(5) { animation-delay: 0.55s; }

@keyframes li-slide-in {
  from {
    opacity: 0;
    transform: translateX(-14px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

.instructions li::before {
  content: '▸';
  position: absolute;
  left: 0;
  color: var(--accent-2);
}

.btn-primary {
  position: relative;
  font-family: var(--font-display);
  font-size: 1rem;
  letter-spacing: 0.06em;
  color: #0b0d10;
  background: linear-gradient(135deg, var(--accent-2), #34c9a3);
  border: none;
  border-radius: 14px;
  padding: 16px 32px;
  cursor: pointer;
  overflow: hidden;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}

/* animated sheen sweeping across the button */
.btn-primary::after {
  content: '';
  position: absolute;
  top: 0;
  left: -60%;
  width: 40%;
  height: 100%;
  background: linear-gradient(
    115deg,
    transparent,
    rgba(255, 255, 255, 0.55),
    transparent
  );
  transform: skewX(-20deg);
  animation: btn-sheen 3.2s ease-in-out infinite;
}

@keyframes btn-sheen {
  0% { left: -60%; }
  35%, 100% { left: 140%; }
}

.btn-primary:hover {
  transform: translateY(-2px) scale(1.03);
}

.btn-primary:active {
  transform: translateY(0) scale(0.97);
}

.status-text {
  margin-top: 16px;
  font-size: 0.85rem;
  color: var(--text-dim);
  min-height: 1.2em;
  transition: color 0.2s ease;
}

.status-text.error {
  color: var(--danger);
  animation: shake 0.4s ease;
}

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

#final-score {
  font-family: var(--font-display);
  font-size: 1.3rem;
  color: var(--accent-3);
  text-shadow: 0 0 18px rgba(255, 210, 63, 0.5);
  animation: value-bump 0.5s ease 0.3s;
}

/* ---------- Banner ---------- */
.banner {
  position: absolute;
  bottom: 28px;
  left: 50%;
  transform: translateX(-50%);
  background: rgba(255, 59, 59, 0.15);
  border: 1px solid rgba(255, 59, 59, 0.4);
  color: #ffb3b3;
  padding: 10px 22px;
  border-radius: 999px;
  font-size: 0.85rem;
  z-index: 15;
  letter-spacing: 0.03em;
  backdrop-filter: blur(6px);
  animation: banner-in 0.35s ease, banner-pulse 1.6s ease-in-out 0.35s infinite;
}

@keyframes banner-in {
  from {
    opacity: 0;
    transform: translate(-50%, 16px);
  }
  to {
    opacity: 1;
    transform: translate(-50%, 0);
  }
}

@keyframes banner-pulse {
  0%, 100% { box-shadow: 0 0 0 rgba(255, 59, 59, 0.0); }
  50% { box-shadow: 0 0 22px rgba(255, 59, 59, 0.35); }
}

.banner.hidden {
  display: none;
}

/* ---------- Responsive ---------- */
@media (max-width: 600px) {
  .panel {
    padding: 28px 24px;
  }
  .panel h1 {
    font-size: 2rem;
  }
  #hud {
    padding: 12px 14px;
  }
  .hud-block {
    padding: 6px 12px;
    min-width: 70px;
  }
  .hud-value {
    font-size: 1.1rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
}