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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  min-height: 100vh;
  color: #fff;
  transition: background 0.3s ease;
}

/* Colour schemes */
body[data-theme="purple"] {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

body[data-theme="ocean"] {
  background: linear-gradient(135deg, #2E3192 0%, #1BFFFF 100%);
}

body[data-theme="sunset"] {
  background: linear-gradient(135deg, #FF6B6B 0%, #FFE66D 100%);
}

body[data-theme="forest"] {
  background: linear-gradient(135deg, #134E5E 0%, #71B280 100%);
}

body[data-theme="dark"] {
  background: linear-gradient(135deg, #1a1a1a 0%, #2d2d2d 100%);
}

/* Dev environment ribbon */
.dev-ribbon {
  position: fixed;
  top: 15px;
  right: -35px;
  background: #f5a623;
  color: #000;
  padding: 5px 40px;
  font-size: 12px;
  font-weight: bold;
  transform: rotate(45deg);
  z-index: 9999;
  box-shadow: 0 2px 10px rgba(0,0,0,0.3);
  letter-spacing: 1px;
}

.container {
  max-width: 800px;
  margin: 0 auto;
  padding: 40px 20px;
}

h1 {
  font-size: 24px;
  font-weight: 400;
  margin-bottom: 10px;
  opacity: 0.6;
}

.subtitle {
  font-size: 18px;
  opacity: 0.9;
  margin-bottom: 40px;
}

input[type="email"],
input[type="text"],
input[type="file"] {
  width: 100%;
  padding: 15px;
  margin-bottom: 15px;
  border: none;
  border-radius: 8px;
  font-size: 16px;
  background: rgba(255, 255, 255, 0.9);
}

button {
  width: 100%;
  padding: 15px;
  background: #fff;
  colour: #667eea;
  border: none;
  border-radius: 8px;
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  transition: transform 0.2s;
}

button:hover {
  transform: translateY(-2px);
}

button:active {
  transform: translateY(0);
}

.error {
  colour: #ff6b6b;
  margin-top: 10px;
  font-size: 14px;
}

#pin-input {
  margin-top: 20px;
}

canvas {
  width: 100%;
  height: 150px;
  background: rgba(0, 0, 0, 0.3);
  border-radius: 8px;
  margin-bottom: 20px;
}

#fft {
  height: 200px;
  cursor: pointer;
}

/* FFT container for overlay controls */
.fft-container {
  position: relative;
  width: 100%;
  margin-bottom: 20px;
}

/* YouTube-style player controls */
.player-controls {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  display: flex;
  gap: 20px;
  align-items: center;
  justify-content: center;
  opacity: 1;
  transition: opacity 0.3s ease;
  pointer-events: none;
  z-index: 10;
}

.player-controls.hidden {
  opacity: 0;
}

.control-btn {
  background: rgba(0, 0, 0, 0.7);
  border: none;
  border-radius: 50%;
  width: 64px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all 0.2s ease;
  pointer-events: auto;
  padding: 0;
}

.control-btn.play-pause {
  width: 80px;
  height: 80px;
}

.control-btn:hover {
  background: rgba(0, 0, 0, 0.9);
  transform: scale(1.1) translateY(0);
}

.control-btn:active {
  transform: scale(0.95) translateY(0);
}

.control-btn svg {
  color: #fff;
  opacity: 0.9;
}

.control-btn:hover svg {
  opacity: 1;
}

#shares-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.share-item {
  background: rgba(255, 255, 255, 0.1);
  padding: 20px;
  border-radius: 8px;
  cursor: pointer;
  transition: background 0.2s;
}

.share-item:hover {
  background: rgba(255, 255, 255, 0.2);
}

.share-item h3 {
  margin-bottom: 5px;
}

.share-item p {
  opacity: 0.8;
  font-size: 14px;
}

.download-btn {
  width: auto;
  padding: 10px 20px;
  font-size: 14px;
  margin-top: 20px;
  background: rgba(255, 255, 255, 0.2);
  colour: #fff;
}

.download-btn:disabled {
  opacity: 0.3;
  cursor: not-allowed;
  transform: none;
}

.download-btn:disabled:hover {
  transform: none;
}

#upload-progress-container {
  margin-top: 15px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.upload-progress-item {
  position: relative;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 8px;
  padding: 15px;
  overflow: hidden;
  min-height: 50px;
  display: flex;
  align-items: center;
}

.upload-progress-item .progress-bg {
  position: absolute;
  top: 0;
  left: 0;
  height: 100%;
  background: rgba(245, 166, 35, 0.3);
  transition: width 0.3s ease;
  border-radius: 8px;
}

.upload-progress-item .progress-text {
  position: relative;
  z-index: 1;
  colour: #fff;
  font-size: 14px;
  font-weight: 500;
}

.upload-progress-item.complete .progress-bg {
  background: rgba(113, 178, 128, 0.4);
}

.upload-progress-item.error .progress-bg {
  background: rgba(255, 107, 107, 0.4);
}

@keyframes wobble {
  0% {
    transform: translate(0, 0) rotate(0deg);
    text-shadow: 4px 4px 10px rgba(0, 0, 0, 0.4);
  }
  10% {
    transform: translate(-4px, -3px) rotate(-2deg);
    text-shadow: 7px 6px 10px rgba(0, 0, 0, 0.4);
  }
  25% {
    transform: translate(3px, -4px) rotate(1deg);
    text-shadow: 2px 7px 10px rgba(0, 0, 0, 0.4);
  }
  40% {
    transform: translate(-3px, 4px) rotate(-1deg);
    text-shadow: 6px 1px 10px rgba(0, 0, 0, 0.4);
  }
  55% {
    transform: translate(5px, 2px) rotate(2deg);
    text-shadow: 1px 3px 10px rgba(0, 0, 0, 0.4);
  }
  70% {
    transform: translate(-2px, -5px) rotate(-2deg);
    text-shadow: 5px 8px 10px rgba(0, 0, 0, 0.4);
  }
  85% {
    transform: translate(4px, 3px) rotate(1deg);
    text-shadow: 2px 2px 10px rgba(0, 0, 0, 0.4);
  }
  100% {
    transform: translate(0, 0) rotate(0deg);
    text-shadow: 4px 4px 10px rgba(0, 0, 0, 0.4);
  }
}

.upload-button {
  width: 100%;
  padding: 30px;
  font-size: 72px;
  font-weight: 700;
  margin-bottom: 40px;
  background: none;
  color: #fff;
  border: none;
  cursor: pointer;
  opacity: 0.9;
  animation: wobble 2.5s ease-in-out infinite;
}

.upload-button:hover {
  opacity: 1;
}

footer button {
  width: auto;
  padding: 0;
  background: none;
  transform: none;
}

footer button:hover {
  transform: none;
}

footer button:active {
  transform: none;
}

.message {
  margin-top: 10px;
  color: #fff;
  opacity: 0.9;
  font-size: 14px;
  text-align: center;
}

.error {
  margin-top: 10px;
  color: #ffcccc;
  font-size: 14px;
  text-align: center;
}

/* Mobile adjustments */
@media (max-width: 600px) {
  .container {
    padding: 30px 12px;
  }

  h1 {
    font-size: 20px;
  }

  .upload-button {
    font-size: 56px;
    padding: 20px;
  }

  /* Player view mobile adjustments */
  #track-title-display {
    font-size: 28px !important;
  }

  #file-summary {
    font-size: 11px !important;
    gap: 10px !important;
    flex-wrap: wrap;
  }

  .player-header a {
    font-size: 14px;
    margin-bottom: 10px !important;
  }

  #time-display {
    font-size: 12px;
  }
}