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

body {
  font-family: 'IBM Plex Sans', system-ui, sans-serif;
}

.glass-card {
  background: rgba(255, 255, 255, 0.7);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid rgba(255, 255, 255, 0.3);
  box-shadow: 0 4px 30px rgba(0, 0, 0, 0.06);
}

.dark .glass-card {
  background: rgba(28, 35, 51, 0.75);
  border: 1px solid rgba(255, 255, 255, 0.06);
  box-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
}

.drop-zone {
  border: 2.5px dashed #0f9690;
  transition: all 0.3s ease;
}

.drop-zone:hover,
.drop-zone.drag-over {
  border-color: #16a085;
  background: rgba(15, 150, 144, 0.06);
  transform: scale(1.005);
}

.dark .drop-zone:hover,
.dark .drop-zone.drag-over {
  background: rgba(15, 150, 144, 0.1);
}

@keyframes dashMove {
  to { stroke-dashoffset: -20; }
}

@keyframes pulse-glow {
  0%, 100% { box-shadow: 0 0 8px rgba(15, 150, 144, 0.3); }
  50% { box-shadow: 0 0 24px rgba(15, 150, 144, 0.6); }
}

.pulse-btn {
  animation: pulse-glow 2s ease-in-out infinite;
}

@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

.fade-in-up {
  animation: fadeInUp 0.5s ease-out forwards;
}

.tab-active {
  border-bottom: 3px solid #0f9690;
  color: #0f9690;
}

.dark .tab-active {
  color: #16a085;
  border-bottom-color: #16a085;
}

.gauge-ring {
  transition: stroke-dasharray 1.5s ease-in-out;
}

@keyframes gaugeAppear {
  from { stroke-dasharray: 0 999; }
}

.waveform-canvas {
  cursor: pointer;
}

.settings-drawer {
  transition: transform 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}

.settings-drawer.closed {
  transform: translateX(100%);
}

.settings-drawer.open {
  transform: translateX(0);
}

.progress-stage {
  transition: all 0.4s ease;
}

::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}

::-webkit-scrollbar-track {
  background: transparent;
}

::-webkit-scrollbar-thumb {
  background: rgba(15, 150, 144, 0.3);
  border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
  background: rgba(15, 150, 144, 0.5);
}

.skeleton {
  background: linear-gradient(90deg, #e0e0e0 25%, #f0f0f0 50%, #e0e0e0 75%);
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
}

.dark .skeleton {
  background: linear-gradient(90deg, #1c2333 25%, #2a3348 50%, #1c2333 75%);
  background-size: 200% 100%;
}

@keyframes shimmer {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

.mini-player {
  background: linear-gradient(135deg, rgba(15, 150, 144, 0.1), rgba(26, 26, 46, 0.05));
}

.dark .mini-player {
  background: linear-gradient(135deg, rgba(15, 150, 144, 0.15), rgba(13, 17, 23, 0.3));
}