/* ============================================
   SYNTHWAVE TYPER — UI Components
   Buttons, cards, badges, HUD elements,
   and reusable interface pieces
   ============================================ */

/* ── Neon Buttons ── */
.btn {
  font-family: var(--font-display);
  font-size: var(--fs-base);
  letter-spacing: 2px;
  text-transform: uppercase;
  padding: var(--space-md) var(--space-2xl);
  border: 2px solid var(--neon-pink);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  background: rgba(255, 45, 149, 0.1);
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
  cursor: pointer;
  min-width: 180px;
  text-align: center;
}

.btn::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, transparent 40%, rgba(255, 45, 149, 0.2) 50%, transparent 60%);
  transform: translateX(-100%);
  transition: transform 0.6s ease;
}

.btn:hover {
  background: rgba(255, 45, 149, 0.2);
  box-shadow: var(--glow-pink);
  transform: translateY(-2px);
  animation: buttonGlow 2s ease-in-out infinite;
}

.btn:hover::before {
  transform: translateX(100%);
}

.btn:active {
  transform: translateY(0) scale(0.98);
}

.btn--cyan {
  border-color: var(--neon-cyan);
  background: rgba(0, 240, 255, 0.1);
}

.btn--cyan:hover {
  background: rgba(0, 240, 255, 0.2);
  box-shadow: var(--glow-cyan);
}

.btn--purple {
  border-color: var(--neon-purple);
  background: rgba(185, 79, 255, 0.1);
}

.btn--purple:hover {
  background: rgba(185, 79, 255, 0.2);
  box-shadow: var(--glow-purple);
}

.btn--large {
  font-size: var(--fs-lg);
  padding: var(--space-lg) var(--space-3xl);
}

.btn--small {
  font-size: var(--fs-sm);
  padding: var(--space-sm) var(--space-lg);
  min-width: 120px;
  letter-spacing: 1px;
}

.btn--icon {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
}

/* ── Game Cards ── */
.card {
  background: var(--bg-surface);
  border: 1px solid rgba(0, 240, 255, 0.2);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  position: relative;
  overflow: hidden;
  transition: all var(--transition-base);
}

.card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--neon-pink), var(--neon-cyan), var(--neon-purple));
}

.card:hover {
  border-color: var(--neon-cyan);
  transform: translateY(-3px);
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.3), 0 0 15px var(--neon-cyan-glow);
}

.card__title {
  font-family: var(--font-display);
  font-size: var(--fs-lg);
  color: var(--neon-cyan);
  text-shadow: var(--glow-text-cyan);
  margin-bottom: var(--space-sm);
  letter-spacing: 1px;
}

.card__desc {
  font-size: var(--fs-sm);
  color: var(--text-secondary);
  line-height: 1.6;
}

.card__icon {
  font-size: var(--fs-3xl);
  margin-bottom: var(--space-md);
}

/* ── Grade Selector Cards ── */
.grade-card {
  background: var(--bg-surface);
  border: 2px solid transparent;
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
  text-align: center;
  cursor: pointer;
  transition: all var(--transition-base);
  min-width: 100px;
}

.grade-card:hover,
.grade-card.selected {
  transform: translateY(-3px) scale(1.05);
}

.grade-card[data-grade="K"] { border-color: var(--grade-k); }
.grade-card[data-grade="K"]:hover,
.grade-card[data-grade="K"].selected { box-shadow: 0 0 20px rgba(57, 255, 20, 0.3); background: rgba(57, 255, 20, 0.1); }

.grade-card[data-grade="1"] { border-color: var(--grade-1); }
.grade-card[data-grade="1"]:hover,
.grade-card[data-grade="1"].selected { box-shadow: 0 0 20px rgba(0, 240, 255, 0.3); background: rgba(0, 240, 255, 0.1); }

.grade-card[data-grade="2"] { border-color: var(--grade-2); }
.grade-card[data-grade="2"]:hover,
.grade-card[data-grade="2"].selected { box-shadow: 0 0 20px rgba(185, 79, 255, 0.3); background: rgba(185, 79, 255, 0.1); }

.grade-card[data-grade="3"] { border-color: var(--grade-3); }
.grade-card[data-grade="3"]:hover,
.grade-card[data-grade="3"].selected { box-shadow: 0 0 20px rgba(255, 45, 149, 0.3); background: rgba(255, 45, 149, 0.1); }

.grade-card[data-grade="4"] { border-color: var(--grade-4); }
.grade-card[data-grade="4"]:hover,
.grade-card[data-grade="4"].selected { box-shadow: 0 0 20px rgba(255, 225, 86, 0.3); background: rgba(255, 225, 86, 0.1); }

.grade-card__label {
  font-family: var(--font-display);
  font-size: var(--fs-xl);
  margin-bottom: var(--space-xs);
}

.grade-card__sub {
  font-size: var(--fs-xs);
  color: var(--text-muted);
  font-family: var(--font-mono);
}

/* ── XP / Progress Bar ── */
.progress-bar {
  width: 100%;
  height: 12px;
  background: var(--bg-darker);
  border-radius: var(--radius-full);
  border: 1px solid rgba(0, 240, 255, 0.2);
  overflow: hidden;
  position: relative;
}

.progress-bar__fill {
  height: 100%;
  border-radius: var(--radius-full);
  background: linear-gradient(90deg, var(--neon-pink), var(--neon-purple), var(--neon-cyan));
  transition: width 0.6s cubic-bezier(0.34, 1.56, 0.64, 1);
  position: relative;
}

.progress-bar__fill::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.3), transparent);
  animation: xpFill 2s ease infinite;
}

.progress-label {
  display: flex;
  justify-content: space-between;
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  color: var(--text-muted);
  margin-bottom: var(--space-xs);
}

/* ── Hearts / Lives ── */
.lives {
  display: flex;
  gap: var(--space-sm);
}

.heart {
  font-size: var(--fs-xl);
  filter: drop-shadow(0 0 5px rgba(255, 45, 149, 0.5));
  transition: all var(--transition-base);
}

.heart.lost {
  filter: grayscale(1) opacity(0.3);
  animation: heartLose 0.5s ease forwards;
}

.heart.beat {
  animation: heartBeat 0.6s ease;
}

/* ── Combo Counter ── */
.combo-display {
  font-family: var(--font-display);
  font-size: var(--fs-3xl);
  text-align: center;
  opacity: 0;
  transition: all var(--transition-fast);
  pointer-events: none;
  position: absolute;
  top: 50%;
  right: var(--space-xl);
  transform: translateY(-50%);
}

.combo-display.active {
  opacity: 1;
}

.combo-display.fire {
  animation: comboFire 0.5s ease;
  color: var(--neon-yellow);
  text-shadow: var(--glow-yellow);
}

.combo-multiplier {
  font-size: var(--fs-sm);
  color: var(--neon-yellow);
  font-family: var(--font-mono);
}

/* ── Score Display ── */
.score-display {
  font-family: var(--font-display);
  font-size: var(--fs-xl);
  color: var(--neon-cyan);
  text-shadow: var(--glow-text-cyan);
  letter-spacing: 2px;
}

/* ── WPM Meter ── */
.wpm-meter {
  text-align: center;
}

.wpm-meter__value {
  font-family: var(--font-display);
  font-size: var(--fs-2xl);
  color: var(--neon-green);
  text-shadow: var(--glow-green);
}

.wpm-meter__label {
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 2px;
}

/* ── Achievement Badge ── */
.badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-xs) var(--space-md);
  border-radius: var(--radius-full);
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  border: 1px solid;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.badge--gold {
  border-color: var(--neon-yellow);
  color: var(--neon-yellow);
  background: rgba(255, 225, 86, 0.1);
}

.badge--silver {
  border-color: #aaa;
  color: #ccc;
  background: rgba(170, 170, 170, 0.1);
}

.badge--bronze {
  border-color: #cd7f32;
  color: #cd7f32;
  background: rgba(205, 127, 50, 0.1);
}

/* ── Star Rating ── */
.stars {
  display: flex;
  gap: var(--space-xs);
  font-size: var(--fs-xl);
}

.star {
  color: var(--text-muted);
  transition: all var(--transition-spring);
}

.star.earned {
  color: var(--neon-yellow);
  filter: drop-shadow(0 0 8px var(--neon-yellow-glow));
  animation: starCollect 0.6s ease;
}

/* ── Toast Notification ── */
.toast {
  position: fixed;
  top: var(--space-xl);
  right: var(--space-xl);
  background: var(--bg-surface);
  border: 1px solid var(--neon-cyan);
  border-radius: var(--radius-md);
  padding: var(--space-md) var(--space-xl);
  font-family: var(--font-body);
  color: var(--text-primary);
  box-shadow: var(--glow-cyan);
  z-index: var(--z-toast);
  animation: fadeInDown 0.4s ease, fadeOut 0.4s ease 2.6s forwards;
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.toast--success { border-color: var(--neon-green); box-shadow: var(--glow-green); }
.toast--error { border-color: #ff3333; box-shadow: 0 0 15px rgba(255, 50, 50, 0.3); }

/* ── Countdown Overlay ── */
.countdown-overlay {
  position: fixed;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(5, 5, 16, 0.85);
  z-index: var(--z-modal);
}

.countdown-number {
  font-family: var(--font-display);
  font-size: 8rem;
  color: var(--neon-cyan);
  text-shadow: var(--glow-cyan);
  animation: countdownPop 1s ease forwards;
}

/* ── Tooltip ── */
.tooltip {
  position: relative;
}

.tooltip::after {
  content: attr(data-tooltip);
  position: absolute;
  bottom: 100%;
  left: 50%;
  transform: translateX(-50%) translateY(-8px);
  background: var(--bg-surface);
  border: 1px solid var(--neon-cyan);
  color: var(--text-primary);
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  padding: var(--space-xs) var(--space-sm);
  border-radius: var(--radius-sm);
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-fast);
}

.tooltip:hover::after {
  opacity: 1;
}

/* ── Power-Up Icons ── */
.power-up {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 50px;
  height: 50px;
  border-radius: 50%;
  font-size: var(--fs-xl);
  animation: powerUpFloat 3s ease-in-out infinite;
  border: 2px solid;
  position: absolute;
}

.power-up--slow {
  border-color: var(--neon-cyan);
  background: rgba(0, 240, 255, 0.15);
  box-shadow: var(--glow-cyan);
}

.power-up--shield {
  border-color: var(--neon-green);
  background: rgba(57, 255, 20, 0.15);
  box-shadow: var(--glow-green);
}

.power-up--double {
  border-color: var(--neon-yellow);
  background: rgba(255, 225, 86, 0.15);
  box-shadow: var(--glow-yellow);
}

/* ── Divider ── */
.neon-divider {
  width: 100%;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--neon-cyan), transparent);
  margin: var(--space-lg) 0;
  border: none;
}

/* ── Loading Spinner ── */
.loading {
  display: flex;
  gap: var(--space-sm);
  align-items: center;
  justify-content: center;
}

.loading__dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--neon-cyan);
  animation: loadingDot 1.4s ease-in-out infinite;
}

.loading__dot:nth-child(2) { animation-delay: 0.16s; }
.loading__dot:nth-child(3) { animation-delay: 0.32s; }

/* ── Global Mute Button ── */
.global-mute-btn {
  position: fixed;
  bottom: var(--space-lg);
  right: var(--space-lg);
  z-index: var(--z-toast);
  width: 44px;
  height: 44px;
  border-radius: 50%;
  border: 2px solid rgba(0, 240, 255, 0.3);
  background: rgba(10, 10, 26, 0.85);
  backdrop-filter: blur(8px);
  color: var(--neon-cyan);
  font-size: 1.2rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-base);
  box-shadow: 0 0 10px rgba(0, 240, 255, 0.1);
  padding: 0;
  line-height: 1;
}

.global-mute-btn:hover {
  border-color: var(--neon-cyan);
  box-shadow: 0 0 15px rgba(0, 240, 255, 0.3);
  transform: scale(1.1);
}

.global-mute-btn.muted {
  border-color: rgba(255, 45, 149, 0.3);
  color: var(--neon-pink);
  box-shadow: 0 0 10px rgba(255, 45, 149, 0.1);
}

.global-mute-btn.muted:hover {
  border-color: var(--neon-pink);
  box-shadow: 0 0 15px rgba(255, 45, 149, 0.3);
}