/* Mobile-first CSS with light/dark mode support */

:root {
  --color-bg: #ffffff;
  --color-text: #000000;
  --color-border: #e0e0e0;
  --color-primary: #007AFF;
  --color-primary-hover: #0051d5;
  --color-secondary: #f0f0f0;
  --color-error: #ff3b30;
  --color-success: #34c759;
  --color-waveform: #007AFF;
  --color-progress: #34c759;
  --color-region: #ff9500;
  --color-region-hover: #ffcc00;
}

@media (prefers-color-scheme: dark) {
  :root {
    --color-bg: #1a1a1a;
    --color-text: #ffffff;
    --color-border: #333333;
    --color-secondary: #2a2a2a;
  }
}

* {
  box-sizing: border-box;
}

html, body {
  margin: 0;
  padding: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  font-size: 16px;
  background-color: var(--color-bg);
  color: var(--color-text);
  line-height: 1.5;
}

body {
  padding: 0;
  min-height: 100vh;
  transition: background-color 0.2s, color 0.2s;
}

/* Layout */
.container {
  max-width: 100%;
  padding: 1rem 1rem;
  margin: 0 auto;
}

h1 {
  font-size: 2rem;
  margin: 1rem 0 0.5rem 0;
  font-weight: 700;
}

h3 {
  font-size: 1.2rem;
  margin: 1.5rem 0 0.5rem 0;
  font-weight: 600;
}

p {
  margin: 0.5rem 0;
}

.subtle {
  color: #888;
  font-size: 0.9rem;
}

/* Screens */
.screen {
  display: none;
  animation: fadeIn 0.2s;
}

.screen.active {
  display: block;
}

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

/* Upload screen */
.upload-box {
  position: relative;
  border: 2px solid var(--color-border);
  border-radius: 8px;
  padding: 2rem 1rem;
  text-align: center;
  margin: 2rem 0;
  background-color: var(--color-secondary);
}

#file-input {
  position: absolute;
  opacity: 0;
  width: 100%;
  height: 100%;
  cursor: pointer;
}

.file-label {
  display: block;
  padding: 1rem;
  cursor: pointer;
  font-weight: 600;
  color: var(--color-primary);
}

/* Progress bar */
.progress {
  margin: 1rem 0;
  border-radius: 8px;
  background-color: var(--color-secondary);
  padding: 0.5rem;
  overflow: hidden;
}

.progress.hidden {
  display: none;
}

.progress-bar {
  height: 1rem;
  background-color: var(--color-progress);
  border-radius: 4px;
  width: 0%;
  transition: width 0.1s;
}

#progress-text {
  text-align: center;
  font-size: 0.9rem;
  margin: 0.5rem 0 0 0;
}

/* Error message */
.error {
  padding: 1rem;
  border-radius: 8px;
  background-color: #ffebee;
  color: var(--color-error);
  margin: 1rem 0;
  border-left: 4px solid var(--color-error);
}

.error.hidden {
  display: none;
}

/* Spinner */
.spinner {
  width: 2rem;
  height: 2rem;
  border: 3px solid var(--color-border);
  border-top-color: var(--color-primary);
  border-radius: 50%;
  animation: spin 1s linear infinite;
  margin: 2rem auto;
}

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

/* Waveform */
.waveform-container {
  width: 100%;
  height: 200px;
  background-color: var(--color-secondary);
  border-radius: 8px;
  margin: 1.5rem 0;
  overflow: hidden;
}

canvas {
  display: block;
}

audio {
  border-radius: 8px;
}

/* Type selector */
.type-selector {
  display: flex;
  gap: 0.5rem;
  margin: 1.5rem 0;
}

.type-btn {
  flex: 1;
  padding: 0.75rem;
  border: 2px solid var(--color-border);
  background-color: var(--color-secondary);
  color: var(--color-text);
  border-radius: 8px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
  min-height: 44px;
}

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

.type-btn.active {
  background-color: var(--color-primary);
  border-color: var(--color-primary);
  color: white;
}

/* Playback controls */
.playback-controls {
  display: flex;
  gap: 0.5rem;
  margin: 1.5rem 0;
}

.btn-control {
  flex: 1;
  padding: 0.75rem;
  background-color: var(--color-primary);
  color: white;
  border: none;
  border-radius: 8px;
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
  min-height: 44px;
}

.btn-control:active {
  opacity: 0.8;
}

/* Candidates list and session clips */
#candidates-container,
#session-clips-container,
#done-session-clips-container {
  margin: 1.5rem 0;
}

#session-clips-container.hidden,
#done-session-clips-container.hidden {
  display: none;
}

.session-clips-item {
  padding: 1rem;
  background-color: var(--color-secondary);
  border-radius: 8px;
  margin: 0.5rem 0;
  border-left: 4px solid var(--color-progress);
}

.clip-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.5rem;
}

.clip-name {
  font-weight: 600;
}

.clip-meta {
  font-size: 0.9rem;
  color: #888;
  margin: 0.25rem 0;
}

.clip-actions {
  display: flex;
  gap: 0.5rem;
  margin-top: 0.5rem;
}

.btn-share-clip {
  flex: 1;
  padding: 0.5rem;
  background-color: var(--color-primary);
  color: white;
  border: none;
  border-radius: 4px;
  cursor: pointer;
  font-size: 0.85rem;
  font-weight: 600;
  min-height: 40px;
}

.btn-share-clip:active {
  opacity: 0.8;
}

.clip-download {
  flex: 1;
  padding: 0.5rem;
  background-color: var(--color-secondary);
  border: 1px solid var(--color-border);
  border-radius: 4px;
  font-size: 0.85rem;
  font-weight: 600;
  text-decoration: none;
  text-align: center;
  color: var(--color-text);
  min-height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* Candidates list */
#candidates-container {
  margin: 1.5rem 0;
}

.candidate-item {
  padding: 1rem;
  background-color: var(--color-secondary);
  border-radius: 8px;
  margin: 0.5rem 0;
  cursor: pointer;
  transition: all 0.2s;
  border-left: 4px solid transparent;
}

.candidate-item:active {
  transform: translateX(2px);
}

.candidate-item.active {
  border-left-color: var(--color-primary);
  background-color: var(--color-border);
}

.candidate-rank {
  display: inline-block;
  background-color: var(--color-primary);
  color: white;
  padding: 0.25rem 0.5rem;
  border-radius: 4px;
  font-size: 0.85rem;
  font-weight: 600;
  margin-right: 0.5rem;
}

.candidate-length {
  font-weight: 600;
}

.candidate-meta {
  font-size: 0.9rem;
  color: #888;
  margin-top: 0.25rem;
}

/* Region editor */
#editor-container {
  margin: 1.5rem 0;
  padding: 1rem;
  background-color: var(--color-secondary);
  border-radius: 8px;
}

#editor-container.hidden {
  display: none;
}

.region-controls {
  margin-top: 1rem;
}

.control-row {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin: 0.75rem 0;
}

.control-row label {
  width: 50px;
  font-weight: 600;
  font-size: 0.9rem;
}

.nudge-controls {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.nudge-btn {
  padding: 0.5rem 0.75rem;
  background-color: var(--color-primary);
  color: white;
  border: none;
  border-radius: 4px;
  cursor: pointer;
  font-size: 0.8rem;
  font-weight: 600;
  min-height: 44px;
  min-width: 44px;
}

.nudge-btn:active {
  opacity: 0.8;
}

.time-display {
  font-family: monospace;
  font-weight: 600;
  min-width: 50px;
  text-align: center;
}

.length-display {
  font-weight: 600;
  color: var(--color-primary);
}

.clamp-message {
  margin-top: 0.5rem;
  font-size: 0.9rem;
  color: #ff9500;
}

/* Forms */
.form-group {
  margin: 1.5rem 0;
}

label {
  display: block;
  margin-bottom: 0.5rem;
  font-weight: 600;
}

input[type="text"] {
  width: 100%;
  padding: 0.75rem;
  border: 2px solid var(--color-border);
  border-radius: 8px;
  font-size: 1rem;
  background-color: var(--color-bg);
  color: var(--color-text);
}

input[type="text"]:focus {
  outline: none;
  border-color: var(--color-primary);
}

/* Cleanup controls */
.cleanup-controls {
  display: flex;
  gap: 0.5rem;
  margin: 0.5rem 0;
}

.cleanup-btn {
  flex: 1;
  padding: 0.75rem;
  border: 2px solid var(--color-border);
  background-color: var(--color-secondary);
  color: var(--color-text);
  border-radius: 8px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
  min-height: 44px;
}

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

.cleanup-btn.active {
  background-color: var(--color-primary);
  border-color: var(--color-primary);
  color: white;
}

/* Buttons */
button {
  font-size: 1rem;
  border: none;
  border-radius: 8px;
  padding: 0.75rem 1.5rem;
  cursor: pointer;
  font-weight: 600;
  transition: all 0.2s;
  min-height: 44px;
  min-width: 44px;
}

.btn-primary {
  background-color: var(--color-primary);
  color: white;
  width: 100%;
  margin: 1rem 0;
}

.btn-primary:active {
  background-color: var(--color-primary-hover);
}

.btn-primary:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.btn-secondary {
  background-color: var(--color-secondary);
  color: var(--color-text);
  border: 2px solid var(--color-border);
  width: 100%;
  margin: 0.5rem 0;
}

.btn-secondary:active {
  background-color: var(--color-border);
}

/* Done screen */
.done-name {
  font-size: 1.5rem;
  font-weight: 700;
  margin: 1rem 0;
  text-align: center;
  word-break: break-word;
}

.download-section {
  margin: 2rem 0;
  padding: 1rem;
  background-color: var(--color-secondary);
  border-radius: 8px;
}

#download-m4a,
#download-mp3 {
  display: block;
  margin: 0.5rem 0;
  text-decoration: none;
}

/* Setup section */
.setup-section {
  margin: 2rem 0;
  padding: 1rem;
  background-color: var(--color-secondary);
  border-radius: 8px;
}

.setup-steps h3 {
  margin-top: 0;
}

details {
  margin: 1rem 0;
  cursor: pointer;
}

details summary {
  font-weight: 600;
  padding: 0.5rem;
  border-radius: 4px;
  background-color: var(--color-border);
  user-select: none;
}

details summary:hover {
  background-color: var(--color-border);
}

details[open] summary {
  margin-bottom: 0.5rem;
}

ol, ul {
  margin: 0.5rem 0;
  padding-left: 1.5rem;
}

li {
  margin: 0.5rem 0;
}

/* Responsive */
@media (min-width: 768px) {
  .container {
    max-width: 600px;
  }

  .type-selector {
    gap: 1rem;
  }

  .waveform-container {
    height: 300px;
  }
}

/* Detect iOS */
@supports (-webkit-appearance: none) {
  input[type="text"] {
    font-size: 16px;
  }
}