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

:root {
  --color-primary: #541E17;
  --color-primary-hover: #3D1510;
  --color-accent: #C9821A;
  --color-accent-glow: rgba(201, 130, 26, 0.25);
  --color-bg: #F3EFE9;
  --color-surface: #FFFFFF;
  --color-text: #2D2D2D;
  --color-text-secondary: #8C8C8C;
  --color-border: #D5C9BE;
  --color-ink: #1C1208;
  --color-red: #9E3B33;
  --color-green: #4A7C59;
  --font-serif: 'Noto Serif TC', 'Noto Serif SC', serif;
  --font-body: 'Noto Serif TC', 'Noto Serif SC', 'Noto Sans TC', 'Noto Sans SC', serif;
  --font-mono: 'IBM Plex Mono', monospace;
}

body {
  font-family: var(--font-body);
  background: var(--color-bg);
  color: var(--color-text);
  min-height: 100vh;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

/* DEMO BANNER */
#demo-banner {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 10000;
  background: var(--color-accent);
  color: #fff;
  text-align: center;
  font-size: 12px;
  font-family: var(--font-body);
  padding: 0.35rem 1rem;
  letter-spacing: 0.1em;
}

body { padding-top: 28px; }

.screen { display: none; min-height: 100vh; }
.screen.active { display: flex; flex-direction: column; }

/* LANDING */
#landing {
  justify-content: center;
  align-items: center;
  text-align: center;
  padding: 2rem;
}

#landing h1 {
  font-family: var(--font-serif);
  font-size: 3rem;
  font-weight: 900;
  letter-spacing: 0.15em;
  margin-bottom: 0.3rem;
  color: var(--color-ink);
}

#landing h1 span { color: var(--color-primary); }

#landing .subtitle {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--color-text-secondary);
  margin-bottom: 3rem;
  letter-spacing: 2px;
  text-transform: uppercase;
}

#landing .desc {
  max-width: 460px;
  line-height: 2;
  color: var(--color-text-secondary);
  margin-bottom: 3rem;
  font-size: 1rem;
}

.btn-primary {
  background: var(--color-primary);
  color: var(--color-bg);
  border: 2px solid var(--color-primary);
  padding: 0.9rem 2.5rem;
  font-family: var(--font-serif);
  font-size: 1rem;
  cursor: pointer;
  font-weight: 700;
  letter-spacing: 0.1em;
  transition: all 0.3s;
}

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

/* RECORD SCREEN */
#record-screen {
  justify-content: center;
  align-items: center;
  padding: 2rem;
  background: var(--color-surface);
}

.progress-bar {
  width: 100%;
  max-width: 400px;
  height: 3px;
  background: var(--color-border);
  margin-bottom: 2rem;
  overflow: hidden;
}

.progress-fill {
  height: 100%;
  background: var(--color-accent);
  transition: width 0.3s;
}

.word-counter {
  font-family: var(--font-mono);
  color: var(--color-text-secondary);
  font-size: 0.75rem;
  letter-spacing: 2px;
  margin-bottom: 1.5rem;
}

.word-display {
  font-family: var(--font-serif);
  font-size: 4rem;
  font-weight: 900;
  color: var(--color-ink);
  margin-bottom: 0.3rem;
  min-height: 5.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
}

.word-display-s {
  font-family: 'Noto Sans SC', sans-serif;
  font-size: 1.1rem;
  color: var(--color-text-secondary);
  margin-bottom: 0.2rem;
  min-height: 1.4rem;
}

.word-display-en {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--color-accent);
  letter-spacing: 0.5px;
  margin-bottom: 1.5rem;
}

.word-hint {
  font-size: 0.9rem;
  color: var(--color-text-secondary);
  margin-bottom: 2.5rem;
  font-style: italic;
}

.word-reveal {
  margin-bottom: 2rem;
  padding: 0.8rem 1.5rem;
  border-left: 3px solid var(--color-accent);
  background: rgba(201, 130, 26, 0.06);
  animation: fadeIn 0.4s ease-out;
}

.word-dialect {
  font-family: var(--font-serif);
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 0.2rem;
}

.word-romanization {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--color-accent);
  letter-spacing: 0.05em;
}

.reveal-actions {
  display: flex;
  gap: 0.6rem;
  margin-top: 0.8rem;
}

.replay-btn,
.next-word-btn {
  font-family: var(--font-serif);
  font-size: 0.85rem;
  font-weight: 700;
  padding: 0.45rem 1.3rem;
  border: none;
  cursor: pointer;
  transition: background 0.3s;
}

.replay-btn {
  background: var(--color-primary);
  color: var(--color-bg);
}

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

.next-word-btn {
  background: transparent;
  color: var(--color-secondary);
  border: 1px solid var(--color-border);
}

.next-word-btn:hover {
  background: var(--color-surface);
}

.record-btn {
  width: 90px;
  height: 90px;
  border-radius: 50%;
  border: 2px solid var(--color-border);
  background: var(--color-surface);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.3s;
  margin-bottom: 0.8rem;
}

.record-btn .inner {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--color-red);
  transition: all 0.3s;
}

.record-btn:hover { border-color: var(--color-red); }

.record-btn.recording {
  border-color: var(--color-red);
  animation: pulse 1.5s infinite;
}

.record-btn.recording .inner {
  border-radius: 4px;
  width: 26px;
  height: 26px;
}

@keyframes pulse {
  0%, 100% { box-shadow: 0 0 0 0 rgba(158, 59, 51, 0.3); }
  50% { box-shadow: 0 0 0 12px rgba(158, 59, 51, 0); }
}

.record-hint {
  color: var(--color-text-secondary);
  font-size: 0.85rem;
  margin-bottom: 2rem;
}

.skip-btn {
  background: none;
  border: 1px solid var(--color-border);
  color: var(--color-text-secondary);
  padding: 0.5rem 1.5rem;
  cursor: pointer;
  font-family: var(--font-body);
  font-size: 0.85rem;
  transition: all 0.3s;
}

.skip-btn:hover { border-color: var(--color-text); color: var(--color-text); }

.waveform {
  display: flex;
  align-items: center;
  gap: 2px;
  height: 40px;
  margin-bottom: 1rem;
}

.waveform .bar {
  width: 3px;
  background: var(--color-red);
  border-radius: 1px;
  transition: height 0.1s;
}

/* MAP SCREEN */
#map-screen { position: relative; background: var(--color-bg); }

.map-header {
  position: absolute;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  background: linear-gradient(to bottom, var(--color-bg), rgba(243, 239, 233, 0));
  padding: 1.5rem 2rem 3rem;
  text-align: center;
}

.map-header h2 {
  font-family: var(--font-serif);
  font-size: 1.2rem;
  font-weight: 400;
  color: var(--color-ink);
  letter-spacing: 0.1em;
}

.map-header p { color: var(--color-text-secondary); font-size: 0.85rem; margin-top: 0.3rem; }
.map-header strong { color: var(--color-primary); }

#map { flex: 1; min-height: 100vh; z-index: 1; }

.leaflet-container { background: var(--color-bg) !important; }
.leaflet-tile { filter: saturate(0.4) sepia(0.15) brightness(1.05); }
.leaflet-control-zoom a {
  background: var(--color-surface) !important;
  color: var(--color-text) !important;
  border-color: var(--color-border) !important;
}

.map-marker {
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--color-primary);
  border: 2px solid var(--color-bg);
  box-shadow: 0 0 0 2px var(--color-primary), 0 2px 8px rgba(84, 30, 23, 0.3);
  cursor: pointer;
  transition: all 0.3s;
}

.map-marker:hover {
  transform: scale(1.3);
  box-shadow: 0 0 0 3px var(--color-accent), 0 2px 12px rgba(84, 30, 23, 0.4);
}

.map-marker.playing {
  background: var(--color-accent);
  animation: marker-pulse 0.8s infinite;
}

@keyframes marker-pulse {
  0%, 100% { box-shadow: 0 0 0 2px var(--color-accent), 0 0 10px var(--color-accent-glow); }
  50% { box-shadow: 0 0 0 4px var(--color-accent), 0 0 25px var(--color-accent-glow); }
}

.leaflet-popup-content-wrapper {
  background: var(--color-surface) !important;
  color: var(--color-text) !important;
  border-radius: 0 !important;
  border: 1px solid var(--color-border) !important;
  box-shadow: 0 4px 12px rgba(0,0,0,0.1) !important;
}

.leaflet-popup-tip { background: var(--color-surface) !important; }

.popup-content { padding: 0.5rem; text-align: center; min-width: 170px; }

.popup-content h3 {
  font-family: var(--font-serif);
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 0.2rem;
  color: var(--color-primary);
}

.popup-content .recordings-count {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--color-text-secondary);
  margin-bottom: 0.8rem;
  letter-spacing: 1px;
}

.popup-play-btn {
  background: var(--color-primary);
  color: var(--color-bg);
  border: none;
  padding: 0.45rem 1.3rem;
  cursor: pointer;
  font-family: var(--font-serif);
  font-size: 0.85rem;
  font-weight: 700;
  transition: all 0.3s;
}

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

.float-btn {
  position: fixed;
  bottom: 2rem; right: 2rem;
  z-index: 1001;
  background: var(--color-primary);
  color: var(--color-bg);
  border: none;
  width: 52px; height: 52px;
  border-radius: 50%;
  font-size: 1.3rem;
  cursor: pointer;
  box-shadow: 0 4px 12px rgba(84, 30, 23, 0.3);
  display: flex; align-items: center; justify-content: center;
  transition: all 0.3s;
}

.float-btn:hover { transform: scale(1.1); background: var(--color-primary-hover); }

.stats-bar {
  position: fixed;
  bottom: 0; left: 0; right: 0;
  z-index: 1000;
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
  padding: 0.7rem 2rem;
  display: flex; justify-content: center; gap: 2rem;
  font-size: 0.8rem;
}

.stat { color: var(--color-text-secondary); }
.stat strong { color: var(--color-primary); }

.fade-in { animation: fadeIn 0.5s ease-out; }

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(15px); }
  to { opacity: 1; transform: translateY(0); }
}

.thank-you {
  position: fixed; inset: 0; z-index: 2000;
  background: rgba(243, 239, 233, 0.97);
  display: none;
  justify-content: center; align-items: center;
  text-align: center; flex-direction: column; gap: 1rem;
}

.thank-you.show { display: flex; }

.thank-you h2 {
  font-family: var(--font-serif);
  font-size: 2rem; font-weight: 700;
  color: var(--color-primary);
}

.thank-you p {
  color: var(--color-text-secondary);
  max-width: 380px; line-height: 1.8;
}

/* SURVEY SCREEN */
#survey-screen,
#posttest-screen {
  justify-content: center;
  align-items: center;
  text-align: center;
  padding: 2rem;
}

.survey-container {
  max-width: 460px;
  width: 100%;
}

.survey-steps {
  margin-bottom: 2.5rem;
  padding: 1.2rem 1.5rem;
  border-left: 3px solid var(--color-accent);
  background: rgba(201, 130, 26, 0.06);
  text-align: left;
}

.survey-steps-title {
  font-family: var(--font-serif);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--color-ink);
  margin-bottom: 0.5rem;
}

.survey-steps-list {
  font-size: 0.85rem;
  color: var(--color-text-secondary);
  line-height: 1.8;
}

#survey-form {
  text-align: left;
}

.form-group {
  margin-bottom: 1.3rem;
}

.form-group label {
  display: block;
  font-family: var(--font-serif);
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--color-ink);
  margin-bottom: 0.4rem;
}

.form-group input[type="text"],
.form-group select {
  width: 100%;
  padding: 0.65rem 0.8rem;
  font-family: var(--font-body);
  font-size: 0.95rem;
  color: var(--color-text);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  outline: none;
  transition: border-color 0.3s;
}

.form-group input[type="text"]:focus,
.form-group select:focus {
  border-color: var(--color-accent);
}

.form-group input[type="text"]::placeholder {
  color: var(--color-text-secondary);
  font-size: 0.85rem;
}

.optional-tag {
  font-weight: 400;
  font-size: 0.75rem;
  color: var(--color-text-secondary);
  margin-left: 0.3rem;
}

.form-group-checkbox {
  margin-top: 1.5rem;
  margin-bottom: 2rem;
}

.form-group-checkbox label {
  display: flex;
  align-items: flex-start;
  gap: 0.6rem;
  font-weight: 400;
  font-size: 0.85rem;
  color: var(--color-text-secondary);
  cursor: pointer;
  line-height: 1.5;
}

.form-group-checkbox input[type="checkbox"] {
  margin-top: 0.2rem;
  accent-color: var(--color-primary);
}

#survey-form .btn-primary {
  display: block;
  width: 100%;
  text-align: center;
}