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

:root {
  --bg-dark: #0a0a0f;
  --bg-card: #12121a;
  --text-primary: #f0f0f5;
  --text-secondary: #8888aa;
  --rainbow-1: #ff6b6b;
  --rainbow-2: #ffd93d;
  --rainbow-3: #6bcb77;
  --rainbow-4: #4d96ff;
  --rainbow-5: #9b59b6;
}

body {
  font-family: 'Outfit', sans-serif;
  background: var(--bg-dark);
  color: var(--text-primary);
  min-height: 100vh;
  overflow-x: hidden;
}

#app {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* Header */
header {
  padding: 1.5rem;
  display: flex;
  justify-content: center;
  align-items: center;
  position: relative;
}

#title {
  font-family: 'Space Mono', monospace;
  font-size: clamp(1.5rem, 5vw, 2.5rem);
  font-weight: 700;
  background: linear-gradient(
    90deg,
    var(--rainbow-1),
    var(--rainbow-2),
    var(--rainbow-3),
    var(--rainbow-4),
    var(--rainbow-5),
    var(--rainbow-1)
  );
  background-size: 200% 100%;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  animation: shimmer 3s ease-in-out infinite;
}

@keyframes shimmer {
  0%, 100% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
}

.badge {
  position: absolute;
  right: 1rem;
  top: 50%;
  transform: translateY(-50%);
  font-family: 'Space Mono', monospace;
  font-size: 0.75rem;
  color: var(--text-secondary);
  text-decoration: none;
  padding: 0.25rem 0.5rem;
  border-radius: 4px;
  background: rgba(255,255,255,0.05);
  transition: all 0.3s ease;
}

.badge:hover {
  background: rgba(255,255,255,0.1);
  color: var(--text-primary);
}

/* Main */
main {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 1rem;
  max-width: 700px;
  margin: 0 auto;
  width: 100%;
}

/* Upload Section */
#upload-section {
  width: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.5rem;
}

#drop-zone {
  width: 100%;
  max-width: 500px;
  aspect-ratio: 4/3;
  border: 3px dashed transparent;
  border-radius: 20px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  cursor: pointer;
  background: 
    linear-gradient(var(--bg-card), var(--bg-card)) padding-box,
    linear-gradient(
      90deg,
      var(--rainbow-1),
      var(--rainbow-2),
      var(--rainbow-3),
      var(--rainbow-4),
      var(--rainbow-5)
    ) border-box;
  background-size: 100% 100%, 300% 100%;
  animation: borderFlow 4s linear infinite;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

@keyframes borderFlow {
  0% { background-position: 0 0, 0% 50%; }
  100% { background-position: 0 0, 300% 50%; }
}

#drop-zone:hover {
  transform: scale(1.02);
  box-shadow: 
    0 0 30px rgba(255, 107, 107, 0.2),
    0 0 60px rgba(75, 150, 255, 0.1);
}

#drop-zone.drag-over {
  transform: scale(1.05);
  box-shadow: 
    0 0 40px rgba(255, 107, 107, 0.3),
    0 0 80px rgba(75, 150, 255, 0.2);
}

.drop-icon {
  animation: tiltPhone 2s ease-in-out infinite;
}

@keyframes tiltPhone {
  0%, 100% { transform: rotate(-5deg); }
  50% { transform: rotate(5deg); }
}

.drop-text {
  font-size: 1.25rem;
  font-weight: 600;
  text-align: center;
}

.drop-subtext {
  font-family: 'Space Mono', monospace;
  font-size: 0.85rem;
  color: var(--text-secondary);
}

.upload-btn {
  font-family: 'Space Mono', monospace;
  font-size: 1rem;
  font-weight: 700;
  padding: 1rem 2rem;
  border: none;
  border-radius: 8px;
  cursor: pointer;
  background: linear-gradient(135deg, #1a1a2e 0%, #2a2a4e 100%);
  color: var(--text-primary);
  box-shadow: 
    0 4px 0 #0a0a15,
    0 6px 20px rgba(0,0,0,0.4);
  transition: all 0.15s ease;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.upload-btn:hover {
  transform: translateY(-2px);
  box-shadow: 
    0 6px 0 #0a0a15,
    0 8px 25px rgba(0,0,0,0.5);
}

.upload-btn:active {
  transform: translateY(2px);
  box-shadow: 
    0 2px 0 #0a0a15,
    0 4px 15px rgba(0,0,0,0.4);
}

/* Processing Section */
#processing-section {
  text-align: center;
  padding: 3rem;
}

.processing-animation {
  margin-bottom: 2rem;
}

.film-strip {
  display: flex;
  gap: 8px;
  justify-content: center;
}

.frame {
  width: 40px;
  height: 50px;
  background: linear-gradient(
    135deg,
    var(--rainbow-1),
    var(--rainbow-4)
  );
  border-radius: 4px;
  animation: frameSlice 1.5s ease-in-out infinite;
}

.frame:nth-child(1) { animation-delay: 0s; }
.frame:nth-child(2) { animation-delay: 0.15s; }
.frame:nth-child(3) { animation-delay: 0.3s; }
.frame:nth-child(4) { animation-delay: 0.45s; }

@keyframes frameSlice {
  0%, 100% { transform: scaleX(1); opacity: 0.5; }
  50% { transform: scaleX(0.3); opacity: 1; }
}

#processing-text {
  font-size: 1.25rem;
  margin-bottom: 1.5rem;
}

.progress-bar {
  width: 100%;
  max-width: 300px;
  height: 12px;
  background: var(--bg-card);
  border-radius: 6px;
  overflow: hidden;
  margin: 0 auto;
}

.progress-fill {
  height: 100%;
  width: 0%;
  background: repeating-linear-gradient(
    45deg,
    var(--rainbow-1),
    var(--rainbow-1) 10px,
    var(--rainbow-2) 10px,
    var(--rainbow-2) 20px,
    var(--rainbow-3) 20px,
    var(--rainbow-3) 30px,
    var(--rainbow-4) 30px,
    var(--rainbow-4) 40px
  );
  background-size: 200% 100%;
  animation: candyCane 1s linear infinite;
  transition: width 0.3s ease;
}

@keyframes candyCane {
  0% { background-position: 0% 0%; }
  100% { background-position: 57px 0%; }
}

/* Output Section */
#output-section {
  width: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.5rem;
}

.canvas-container {
  position: relative;
  max-width: 100%;
}

#lenticular-canvas {
  display: block;
  border-radius: 12px;
  max-width: 100%;
}

.holographic-border {
  position: absolute;
  inset: -4px;
  border-radius: 16px;
  background: linear-gradient(
    90deg,
    var(--rainbow-1),
    var(--rainbow-2),
    var(--rainbow-3),
    var(--rainbow-4),
    var(--rainbow-5),
    var(--rainbow-1)
  );
  background-size: 300% 100%;
  animation: borderFlow 3s linear infinite;
  z-index: -1;
  opacity: 0.7;
  filter: blur(2px);
}

.tilt-instructions {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1rem;
  background: rgba(255,255,255,0.03);
  border-radius: 12px;
  backdrop-filter: blur(10px);
}

.tilt-icon {
  color: var(--text-secondary);
  animation: tiltHint 2s ease-in-out infinite;
}

.phone-icon, .phone-tilt {
  animation: phoneTilt 2s ease-in-out infinite;
}

@keyframes phoneTilt {
  0%, 100% { transform: rotate(0deg); }
  50% { transform: rotate(15deg); }
}

#instructions-text {
  font-size: 0.9rem;
  color: var(--text-secondary);
}

/* Controls Panel */
.controls-panel {
  width: 100%;
  max-width: 500px;
  background: rgba(255,255,255,0.03);
  backdrop-filter: blur(20px);
  border-radius: 16px;
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.control-group {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.control-group label {
  font-family: 'Space Mono', monospace;
  font-size: 0.8rem;
  color: var(--text-secondary);
  min-width: 100px;
}

.control-group input[type="range"] {
  flex: 1;
  height: 6px;
  border-radius: 3px;
  background: var(--bg-dark);
  appearance: none;
  cursor: pointer;
}

.control-group input[type="range"]::-webkit-slider-thumb {
  appearance: none;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--rainbow-4), var(--rainbow-5));
  cursor: pointer;
  box-shadow: 0 2px 8px rgba(0,0,0,0.3);
}

.control-group span {
  font-family: 'Space Mono', monospace;
  font-size: 0.8rem;
  min-width: 40px;
  text-align: right;
}

.presets {
  display: flex;
  gap: 0.75rem;
  justify-content: center;
  margin-top: 0.5rem;
}

.preset-btn {
  font-family: 'Space Mono', monospace;
  font-size: 0.75rem;
  padding: 0.5rem 1rem;
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: 6px;
  background: transparent;
  color: var(--text-secondary);
  cursor: pointer;
  transition: all 0.3s ease;
}

.preset-btn:hover {
  border-color: var(--rainbow-4);
  color: var(--text-primary);
}

.preset-btn.active {
  background: linear-gradient(135deg, var(--rainbow-4), var(--rainbow-5));
  border-color: transparent;
  color: white;
}

/* Filmstrip */
.filmstrip {
  display: flex;
  gap: 6px;
  overflow-x: auto;
  padding: 0.75rem;
  background: rgba(0,0,0,0.3);
  border-radius: 8px;
  max-width: 100%;
}

.filmstrip canvas {
  border-radius: 4px;
  border: 2px solid transparent;
  transition: all 0.2s ease;
  flex-shrink: 0;
}

.filmstrip canvas:hover {
  border-color: var(--rainbow-4);
  transform: scale(1.1);
}

/* Download Section */
.download-section {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  justify-content: center;
}

.download-btn {
  font-family: 'Space Mono', monospace;
  font-size: 0.9rem;
  font-weight: 700;
  padding: 0.875rem 1.5rem;
  border: none;
  border-radius: 8px;
  cursor: pointer;
  background: linear-gradient(
    135deg,
    var(--rainbow-4),
    var(--rainbow-5)
  );
  color: white;
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}

.download-btn::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(
    90deg,
    transparent,
    rgba(255,255,255,0.3),
    transparent
  );
  transform: translateX(-100%);
  transition: transform 0.5s ease;
}

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

.download-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(75, 150, 255, 0.3);
}

.download-btn.secondary {
  background: rgba(255,255,255,0.1);
}

.download-btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.share-btn {
  font-family: 'Space Mono', monospace;
  font-size: 0.9rem;
  padding: 0.875rem 1.5rem;
  border: 1px solid rgba(255,255,255,0.2);
  border-radius: 8px;
  background: transparent;
  color: var(--text-primary);
  text-decoration: none;
  transition: all 0.3s ease;
}

.share-btn:hover {
  background: rgba(255,255,255,0.1);
  border-color: rgba(255,255,255,0.3);
}

/* Gyro Permission Modal */
#gyro-permission {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.8);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 100;
  backdrop-filter: blur(10px);
}

.permission-modal {
  background: var(--bg-card);
  padding: 2.5rem;
  border-radius: 20px;
  text-align: center;
  max-width: 350px;
  border: 1px solid rgba(255,255,255,0.1);
}

.permission-modal h2 {
  font-size: 1.5rem;
  margin-bottom: 0.75rem;
}

.permission-modal p {
  color: var(--text-secondary);
  margin-bottom: 1.5rem;
  font-size: 0.95rem;
}

.permission-modal button {
  font-family: 'Space Mono', monospace;
  font-size: 0.9rem;
  padding: 0.875rem 1.5rem;
  border: none;
  border-radius: 8px;
  cursor: pointer;
  margin: 0.25rem;
  transition: all 0.3s ease;
}

#enable-gyro {
  background: linear-gradient(135deg, var(--rainbow-4), var(--rainbow-5));
  color: white;
}

#skip-gyro {
  background: transparent;
  border: 1px solid rgba(255,255,255,0.2);
  color: var(--text-secondary);
}

/* Footer */
footer {
  text-align: center;
  padding: 1.5rem;
  font-family: 'Space Mono', monospace;
  font-size: 0.85rem;
  color: var(--text-secondary);
}

footer a {
  color: var(--rainbow-4);
  text-decoration: none;
}

footer a:hover {
  text-decoration: underline;
}

/* Utility */
.hidden {
  display: none !important;
}

/* Mobile adjustments */
@media (max-width: 600px) {
  .badge {
    position: static;
    margin-top: -1rem;
    margin-bottom: 1rem;
    display: block;
    text-align: center;
  }

  header {
    flex-direction: column;
  }

  .controls-panel {
    padding: 1rem;
  }

  .control-group {
    flex-wrap: wrap;
  }

  .control-group label {
    min-width: auto;
    width: 100%;
    margin-bottom: 0.25rem;
  }

  .presets {
    flex-direction: column;
  }

  .preset-btn {
    width: 100%;
  }

  .download-section {
    flex-direction: column;
    width: 100%;
  }

  .download-btn, .share-btn {
    width: 100%;
  }
}