/* Button Components */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-semibold);
  border-radius: var(--radius-full);
  transition: all var(--transition-base);
  cursor: pointer;
}

.btn--primary {
  background: linear-gradient(135deg, var(--color-primary), #ff9f5a);
  color: #fff;
  box-shadow: 0 4px 16px rgba(255, 140, 66, 0.35);
}

.btn--primary:hover {
  transform: scale(1.05);
  box-shadow: 0 6px 20px rgba(255, 140, 66, 0.45);
}

.btn--primary:active {
  transform: scale(0.98);
}

.btn--play {
  padding: var(--space-3) var(--space-8);
  font-size: var(--font-size-lg);
  background: linear-gradient(135deg, var(--color-primary), #ff9f5a);
  border-radius: var(--radius-2xl);
  box-shadow: 0 4px 16px rgba(255, 140, 66, 0.35);
}

.btn--icon {
  width: 48px;
  height: 48px;
  padding: 0;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.95);
  box-shadow: var(--shadow-md);
  border: none;
}

.btn--icon:hover {
  transform: scale(1.05);
  box-shadow: var(--shadow-lg);
}

.btn--icon svg {
  width: 24px;
  height: 24px;
}

/* Progress Bar */
.progress-bar {
  width: 100%;
  height: 6px;
  background: rgba(255, 140, 66, 0.2);
  border-radius: var(--radius-full);
  overflow: hidden;
}

.progress-bar__fill {
  height: 100%;
  background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
  border-radius: var(--radius-full);
  transition: width var(--transition-fast);
}

.progress-bar--large {
  height: 10px;
}

/* Action Buttons (Like, Favorite) */
.action-btn {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-1);
  padding: var(--space-2);
  background: none;
  border: none;
  cursor: pointer;
  transition: transform var(--transition-fast);
}

.action-btn:hover {
  transform: scale(1.1);
}

.action-btn:active {
  transform: scale(0.9);
}

.action-btn__icon {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(255, 255, 255, 0.95);
  border-radius: 50%;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-fast);
}

.action-btn__icon svg {
  width: 22px;
  height: 22px;
  fill: var(--color-text-secondary);
  stroke: var(--color-text-secondary);
  transition: all var(--transition-fast);
}

.action-btn__count {
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-secondary);
}

.action-btn--liked .action-btn__icon {
  background: var(--color-like);
}

.action-btn--liked .action-btn__icon svg {
  fill: #fff;
  stroke: #fff;
}

.action-btn--favorited .action-btn__icon {
  background: var(--color-favorite);
}

.action-btn--favorited .action-btn__icon svg {
  fill: var(--color-text);
  stroke: var(--color-text);
}

/* Animation Keyframes */
@keyframes pulse {
  0%, 100% {
    transform: scale(1);
  }
  50% {
    transform: scale(1.15);
  }
}

@keyframes heartBeat {
  0% {
    transform: scale(1);
  }
  15% {
    transform: scale(1.35);
  }
  30% {
    transform: scale(1);
  }
  45% {
    transform: scale(1.25);
  }
  60% {
    transform: scale(1);
  }
}

@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

@keyframes slideUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes bounceUp {
  0%, 100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-5px);
  }
}

@keyframes bounceDown {
  0%, 100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(5px);
  }
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

@keyframes float {
  0%, 100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-8px);
  }
}

.animate-pulse {
  animation: pulse 1.5s ease-in-out infinite;
}

.animate-heart-beat {
  animation: heartBeat 0.8s ease-in-out;
}

.animate-fade-in {
  animation: fadeIn var(--transition-base) ease forwards;
}

.animate-slide-up {
  animation: slideUp var(--transition-base) ease forwards;
}

.animate-float {
  animation: float 3s ease-in-out infinite;
}

/* Loading Spinner */
.loading-spinner {
  width: 48px;
  height: 48px;
  border: 3px solid rgba(255, 140, 66, 0.15);
  border-top-color: var(--color-primary);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}