/* ==========================================================================
   components.css — Buttons, HUD, Score Popups, Countdown
   Mushroom Grove — Enchanted Forest Whack-a-Mole
   ========================================================================== */

/* =========================================================================
   BUTTONS
   ========================================================================= */

/* Base Button */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 56px;
  width: 100%;
  padding: var(--space-md) var(--space-xl);
  font-family: var(--font-display);
  font-size: var(--text-lg);
  letter-spacing: 0.02em;
  border-radius: var(--radius-lg);
  border: 2px solid transparent;
  cursor: pointer;
  touch-action: manipulation;
  -webkit-tap-highlight-color: transparent;
  user-select: none;
  -webkit-user-select: none;
  position: relative;
  overflow: hidden;
  transition:
    transform var(--timing-hit) var(--ease-smooth),
    box-shadow var(--timing-hit) var(--ease-smooth),
    background-color var(--timing-hit) var(--ease-smooth);
}

/* Active / pressed state — instant feedback */
.btn:active {
  transform: scale(0.96);
}

/* Focus-visible for keyboard navigation */
.btn:focus-visible {
  outline: 2px solid var(--color-amber-400);
  outline-offset: 3px;
}

/* Remove outline on non-keyboard focus */
.btn:focus:not(:focus-visible) {
  outline: none;
}

/* Primary Button — Amber/Gold gradient */
.btn--primary {
  background: linear-gradient(
    180deg,
    var(--color-amber-400) 0%,
    var(--color-amber-500) 50%,
    var(--color-amber-600) 100%
  );
  color: var(--text-dark);
  border-color: var(--color-amber-700);
  box-shadow:
    0 2px 4px rgba(0, 0, 0, 0.3),
    inset 0 1px 0 rgba(255, 255, 255, 0.2);
  text-shadow: 0 1px 0 rgba(255, 255, 255, 0.15);
}

.btn--primary:active {
  background: linear-gradient(
    180deg,
    var(--color-amber-500) 0%,
    var(--color-amber-600) 50%,
    var(--color-amber-700) 100%
  );
  box-shadow:
    0 1px 2px rgba(0, 0, 0, 0.4),
    inset 0 1px 3px rgba(0, 0, 0, 0.15);
}

/* Secondary Button — Transparent with border */
.btn--secondary {
  background: rgba(255, 255, 255, 0.04);
  color: var(--text-primary);
  border-color: rgba(245, 230, 200, 0.25);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
}

.btn--secondary:active {
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(245, 230, 200, 0.4);
}

/* Glow Button — Pulsing box-shadow animation */
.btn--glow {
  animation: glowPulse 2.5s ease-in-out infinite;
}

.btn--glow:active {
  animation: none;
}

/* Minimum touch target enforcement */
@media (pointer: coarse) {
  .btn {
    min-height: 80px;
    padding: var(--space-base) var(--space-xl);
    font-size: var(--text-xl);
  }
}


/* =========================================================================
   HUD — Heads-Up Display
   ========================================================================= */

.hud {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: var(--z-hud);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-sm);
  height: calc(var(--hud-height) + var(--safe-top));
  padding-top: var(--safe-top);
  padding-left: calc(var(--safe-left) + var(--space-md));
  padding-right: calc(var(--safe-right) + var(--space-md));
  background: var(--bg-hud);
  backdrop-filter: blur(var(--blur-hud));
  -webkit-backdrop-filter: blur(var(--blur-hud));
  border-bottom: 1px solid rgba(60, 255, 110, 0.08);
}

.hud__label {
  display: block;
  font-family: var(--font-body);
  font-size: var(--text-xs);
  font-weight: var(--weight-semibold);
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  line-height: 1;
}

.hud__value {
  display: block;
  font-family: var(--font-body);
  font-size: var(--text-xl);
  font-weight: var(--weight-extrabold);
  color: var(--text-white);
  line-height: 1.1;
}

/* Score pop animation when value changes */
.hud__value--pop {
  animation: comboPulse 200ms var(--ease-pop);
}

/* Score section */
.hud__score {
  flex: 1;
  min-width: 0;
}

.hud__score .hud__value {
  color: var(--color-amber-400);
}

/* Timer section */
.hud__timer {
  text-align: center;
  min-width: 50px;
}

/* Timer warning state — last 10 seconds */
.hud__timer--warning .hud__value {
  color: var(--color-red-400);
  animation: comboPulse 800ms ease-in-out infinite;
}

/* Lives section */
.hud__lives {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  flex-shrink: 0;
}

.hud__life {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  position: relative;
  transition:
    transform var(--timing-hit) var(--ease-smooth),
    opacity var(--timing-hit) var(--ease-smooth);
}

/* Heart image fallback — CSS pseudo-element with heart emoji */
.hud__life::before {
  content: '\2764\FE0F'; /* Red heart emoji */
  font-size: 18px;
  line-height: 1;
  display: block;
}

/* If image is present inside, hide the pseudo-element */
.hud__life img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.hud__life img + .hud__life::before {
  display: none;
}

/* Life Lost — Fade and shrink animation */
.hud__life--lost {
  animation: lifeLost 400ms var(--ease-smooth) forwards;
}

/* Danger state — Last life, heartbeat animation */
.hud__lives--danger .hud__life:not(.hud__life--lost) {
  animation: heartbeat 1000ms ease-in-out infinite;
}

/* Combo Counter */
.hud__combo {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  padding: var(--space-xs) var(--space-sm);
  border-radius: var(--radius-pill);
  background: rgba(244, 168, 37, 0.15);
  border: 1px solid rgba(244, 168, 37, 0.3);
  opacity: 0;
  transform: scale(0.8);
  transition:
    opacity var(--timing-combo) var(--ease-smooth),
    transform var(--timing-combo) var(--ease-bounce);
}

.hud__combo--active {
  opacity: 1 !important;
  transform: scale(1) !important;
  animation: comboPulse 600ms var(--ease-smooth) infinite;
}

/* Combo tier visual differentiation */
.hud__combo--flame {
  border-color: rgba(244, 168, 37, 0.5);
}

.hud__combo--pulse {
  border-color: rgba(231, 76, 60, 0.5);
  background: rgba(231, 76, 60, 0.15);
}

.hud__combo--fire {
  border-color: rgba(231, 76, 60, 0.7);
  background: rgba(231, 76, 60, 0.25);
}

.hud__combo--glow {
  border-color: rgba(255, 215, 0, 0.6);
  background: rgba(255, 215, 0, 0.2);
}

.hud__combo--legendary {
  border-color: rgba(255, 215, 0, 0.8);
  background: rgba(255, 215, 0, 0.3);
  box-shadow: 0 0 12px rgba(255, 215, 0, 0.3);
}

.hud__combo-icon {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
}

/* Combo icon fallback — When combo-flame.png fails */
.hud__combo-icon[style*="display: none"] + .hud__combo-text::before,
.hud__combo-icon[style*="display:none"] + .hud__combo-text::before {
  content: '\1F525'; /* Fire emoji */
  margin-right: var(--space-xs);
}

.hud__combo-text {
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: var(--weight-extrabold);
  color: var(--color-amber-400);
  white-space: nowrap;
}


/* =========================================================================
   SCORE POPUPS — Floating point indicators
   ========================================================================= */

.score-popup {
  position: fixed;
  font-family: var(--font-display);
  font-size: var(--text-xl);
  color: var(--color-amber-400);
  text-shadow:
    0 0 8px var(--glow-amber),
    0 0 16px var(--glow-amber-soft),
    0 1px 3px rgba(0, 0, 0, 0.6);
  white-space: nowrap;
  pointer-events: none;
  z-index: var(--z-popups);
  will-change: transform, opacity;
  animation: scorePopup var(--timing-popup) var(--ease-smooth) forwards;
  transform: translateX(-50%);
}

/* Golden hit popup — Extra sparkly */
.score-popup--golden {
  color: var(--color-gold-400);
  font-size: var(--text-2xl);
  text-shadow:
    0 0 12px var(--glow-gold),
    0 0 24px var(--glow-gold),
    0 0 48px var(--glow-gold-soft),
    0 1px 3px rgba(0, 0, 0, 0.6);
}

/* Bomb hit popup — Red danger */
.score-popup--bomb {
  color: var(--color-red-400);
  text-shadow:
    0 0 8px var(--glow-red),
    0 0 16px var(--glow-red-soft),
    0 1px 3px rgba(0, 0, 0, 0.6);
}


/* =========================================================================
   COUNTDOWN — Big centered number
   ========================================================================= */

.countdown {
  font-family: var(--font-display);
  font-size: var(--text-countdown);
  color: var(--text-white);
  text-shadow:
    0 0 20px var(--glow-green),
    0 0 40px var(--glow-green),
    0 0 80px var(--glow-green-soft),
    0 2px 4px rgba(0, 0, 0, 0.5);
  will-change: transform, opacity;
  animation: countdownPop var(--timing-countdown-beat) var(--ease-smooth) forwards;
  user-select: none;
  -webkit-user-select: none;
}

/* "Go!" text in green */
.countdown--go {
  color: var(--color-green-300);
  text-shadow:
    0 0 20px var(--glow-green),
    0 0 40px var(--glow-green),
    0 0 80px var(--glow-green-soft),
    0 2px 4px rgba(0, 0, 0, 0.5);
}


/* =========================================================================
   PARTICLE — Individual burst particle
   ========================================================================= */

.particle {
  position: absolute;
  width: 8px;
  height: 8px;
  border-radius: var(--radius-circle);
  pointer-events: none;
  will-change: transform, opacity;
  animation: particleBurst var(--timing-particle) var(--ease-smooth) forwards;
}

.particle--green {
  background: var(--color-green-300);
  box-shadow: 0 0 6px var(--glow-green);
}

.particle--amber {
  background: var(--color-amber-400);
  box-shadow: 0 0 6px var(--glow-amber);
}

.particle--purple {
  background: var(--color-purple-400);
  box-shadow: 0 0 6px var(--glow-purple);
}

.particle--gold {
  background: var(--color-gold-400);
  box-shadow: 0 0 6px var(--glow-gold);
}

.particle--red {
  background: var(--color-red-400);
  box-shadow: 0 0 6px var(--glow-red);
}