/* FrogAudioBook Bioacoustic & Conservation UI Stylesheet */

:root {
  --bg-primary: #0a140e;
  --bg-secondary: #102117;
  --bg-card: #152b1e;
  --bg-card-hover: #1c3828;
  --border-color: #244733;
  --border-focus: #4ade80;
  
  --text-main: #f0fdf4;
  --text-muted: #86efac;
  --text-dim: #94a3b8;
  
  --accent-green: #22c55e;
  --accent-gold: #f59e0b;
  --accent-magma: #ec4899;
  --accent-danger: #ef4444;
  --accent-blue: #38bdf8;
  
  --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --shadow-sm: 0 2px 4px rgba(0,0,0,0.3);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.4);
  --shadow-lg: 0 10px 25px rgba(0,0,0,0.5);
}

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

body {
  font-family: var(--font-family);
  background-color: var(--bg-primary);
  color: var(--text-main);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

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

/* Header */
.app-header {
  background-color: var(--bg-secondary);
  border-bottom: 1px solid var(--border-color);
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(8px);
}

.header-container {
  max-width: 1300px;
  margin: 0 auto;
  padding: 0.75rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.brand-icon {
  font-size: 2rem;
  line-height: 1;
}

.brand-titles h1 {
  font-size: 1.35rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: #a7f3d0;
}

.brand-subtitle {
  font-size: 0.75rem;
  color: var(--text-dim);
}

.nav-tabs {
  display: flex;
  gap: 0.4rem;
  background-color: var(--bg-primary);
  padding: 0.25rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
}

.nav-tab {
  background: transparent;
  color: var(--text-dim);
  border: none;
  padding: 0.45rem 0.9rem;
  font-size: 0.85rem;
  font-weight: 500;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all 0.2s ease;
}

.nav-tab:hover {
  color: var(--text-main);
}

.nav-tab.active {
  background-color: var(--accent-green);
  color: #052e16;
  font-weight: 600;
}

.badge-pill {
  padding: 0.35rem 0.75rem;
  font-size: 0.75rem;
  font-weight: 600;
  border-radius: 9999px;
  background-color: #1e293b;
  color: #cbd5e1;
  border: 1px solid #334155;
}

/* Main Container */
.main-container {
  max-width: 1300px;
  margin: 1.5rem auto;
  padding: 0 1.5rem;
  flex: 1;
  width: 100%;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.panel-card {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  box-shadow: var(--shadow-md);
}

/* Player Hero Panel */
.player-card {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.hero-species-header {
  display: grid;
  grid-template-columns: 240px 1fr;
  gap: 1.5rem;
  align-items: center;
}

@media (max-width: 860px) {
  .hero-species-header {
    grid-template-columns: 1fr;
  }
}

.species-photo-container {
  position: relative;
  width: 100%;
  aspect-ratio: 4/3;
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 2px solid var(--border-color);
  box-shadow: var(--shadow-sm);
}

.species-photo {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.3s ease;
}

.species-photo:hover {
  transform: scale(1.03);
}

.status-chip {
  position: absolute;
  font-size: 0.7rem;
  font-weight: 700;
  padding: 0.2rem 0.5rem;
  border-radius: var(--radius-sm);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  box-shadow: 0 2px 4px rgba(0,0,0,0.4);
}

.status-chip.chip-lc {
  top: 8px;
  left: 8px;
  background-color: #166534;
  color: #bbf7d0;
}

.status-chip.chip-vu {
  bottom: 8px;
  left: 8px;
  background-color: #854d0e;
  color: #fef08a;
}

.status-chip.chip-en {
  top: 8px;
  left: 8px;
  background-color: #9a3412;
  color: #fed7aa;
}

.status-chip.chip-cr {
  top: 8px;
  left: 8px;
  background-color: #991b1b;
  color: #fecaca;
}

.species-meta-info {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.chapter-label {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--accent-gold);
}

.species-titles h2 {
  font-size: 1.8rem;
  font-weight: 700;
  color: #ffffff;
  line-height: 1.2;
}

.species-titles h3 {
  font-size: 1.15rem;
  font-weight: 500;
  font-style: italic;
  color: var(--accent-green);
}

.meta-common {
  font-size: 0.85rem;
  color: var(--text-dim);
}

/* Audio Player Controls */
.audio-player-box {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 0.9rem 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.timeline-container {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.time-label {
  font-size: 0.75rem;
  font-family: monospace;
  color: var(--text-dim);
  min-width: 32px;
}

.seek-slider {
  flex: 1;
  accent-color: var(--accent-green);
  cursor: pointer;
  height: 6px;
}

.playback-controls {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.ctrl-btn {
  background-color: var(--bg-card);
  color: var(--text-main);
  border: 1px solid var(--border-color);
  padding: 0.45rem 0.9rem;
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.ctrl-btn:hover {
  background-color: var(--bg-card-hover);
  border-color: var(--border-focus);
}

.primary-play-btn {
  background-color: var(--accent-green);
  color: #052e16;
  padding: 0.5rem 1.4rem;
  font-weight: 700;
  border: none;
}

.primary-play-btn:hover {
  background-color: #4ade80;
}

.icon-btn {
  font-size: 1.1rem;
  padding: 0.4rem 0.7rem;
}

.toggle-group {
  display: flex;
  gap: 0.35rem;
  margin-left: auto;
}

.toggle-btn {
  background-color: var(--bg-card);
  color: var(--text-dim);
  border: 1px solid var(--border-color);
  font-size: 0.75rem;
  padding: 0.35rem 0.65rem;
  border-radius: var(--radius-sm);
  cursor: pointer;
}

.toggle-btn.active {
  background-color: #14532d;
  color: #86efac;
  border-color: #22c55e;
}

.volume-container {
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.vol-slider {
  width: 80px;
  accent-color: var(--accent-green);
}

/* Mnemonic & Narrative */
.bioacoustic-narrative {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.mnemonic-bubble {
  display: inline-flex;
  align-items: center;
  gap: 0.2rem;
  background-color: rgba(245, 158, 11, 0.12);
  border: 1px solid rgba(245, 158, 11, 0.3);
  padding: 0.3rem 0.75rem;
  border-radius: var(--radius-sm);
  align-self: flex-start;
}

.mnemonic-quote-icon {
  font-size: 1rem;
  color: var(--accent-gold);
  font-weight: bold;
}

.mnemonic-text {
  font-size: 0.95rem;
  font-weight: 700;
  color: #fef08a;
  letter-spacing: 0.02em;
}

.sound-desc-text {
  font-size: 0.9rem;
  color: #d1fae5;
}

/* Spectrogram Player Bar */
.spectrogram-player-bar {
  background-color: #08110b;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.spectrogram-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.spectrogram-header h4 {
  font-size: 0.95rem;
  font-weight: 600;
  color: #a7f3d0;
}

.freq-metrics-pills {
  display: flex;
  gap: 0.4rem;
  flex-wrap: wrap;
}

.metric-pill {
  font-size: 0.75rem;
  font-weight: 600;
  background-color: #1e293b;
  color: #94a3b8;
  padding: 0.2rem 0.55rem;
  border-radius: var(--radius-sm);
  border: 1px solid #334155;
}

.metric-pill.highlight {
  background-color: rgba(236, 72, 153, 0.15);
  color: #f472b6;
  border-color: rgba(236, 72, 153, 0.4);
}

.spectrogram-canvas-wrapper {
  position: relative;
  width: 100%;
  aspect-ratio: 900 / 300;
  max-height: 280px;
  background-color: #000000;
  border-radius: var(--radius-sm);
  overflow: hidden;
  border: 1px solid #1f2937;
}

.spectrogram-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.spectrogram-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
}

.spectrogram-scale-legend {
  display: flex;
  justify-content: space-between;
  font-size: 0.7rem;
  font-family: monospace;
  color: var(--text-dim);
}

/* Tab Panels */
.tab-pane {
  display: none;
}

.tab-pane.active {
  display: block;
}

.section-toolbar {
  display: flex;
  gap: 1rem;
  align-items: center;
  flex-wrap: wrap;
  margin-bottom: 1.25rem;
  background-color: var(--bg-card);
  padding: 0.75rem 1.25rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
}

.filter-group {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.85rem;
  color: var(--text-dim);
}

.select-input, .text-input {
  background-color: var(--bg-secondary);
  color: var(--text-main);
  border: 1px solid var(--border-color);
  padding: 0.4rem 0.75rem;
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  outline: none;
}

.select-input:focus, .text-input:focus {
  border-color: var(--border-focus);
}

.search-box {
  margin-left: auto;
}

.text-input {
  min-width: 240px;
}

/* Species Cards Grid */
.species-cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(290px, 1fr));
  gap: 1.25rem;
}

.species-card {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: all 0.25s ease;
  cursor: pointer;
}

.species-card:hover {
  transform: translateY(-4px);
  border-color: var(--accent-green);
  box-shadow: var(--shadow-lg);
}

.species-card.active-playing {
  border-color: #4ade80;
  box-shadow: 0 0 0 2px rgba(74, 222, 128, 0.4);
}

.card-thumb-container {
  position: relative;
  width: 100%;
  aspect-ratio: 16/9;
  background-color: #050b07;
}

.card-thumb {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.card-body {
  padding: 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  flex: 1;
}

.card-viet-name {
  font-size: 1.15rem;
  font-weight: 700;
  color: #ffffff;
}

.card-sci-name {
  font-size: 0.85rem;
  font-style: italic;
  color: var(--accent-green);
}

.card-mnemonic {
  font-size: 0.8rem;
  font-weight: 600;
  color: #fef08a;
  background-color: rgba(245, 158, 11, 0.1);
  padding: 0.2rem 0.5rem;
  border-radius: 4px;
  align-self: flex-start;
}

.card-footer {
  margin-top: auto;
  padding-top: 0.75rem;
  border-top: 1px solid var(--border-color);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.75rem;
  color: var(--text-dim);
}

/* Spectrogram Gallery */
.spectrogram-gallery-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(380px, 1fr));
  gap: 1.5rem;
  margin-top: 1.25rem;
}

.gallery-card {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.gallery-card-header {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
}

.gallery-card-header h4 {
  font-size: 1rem;
  color: #a7f3d0;
}

/* Atlas Grid */
.atlas-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
  margin: 1.25rem 0;
}

@media (max-width: 860px) {
  .atlas-grid {
    grid-template-columns: 1fr;
  }
}

.atlas-zones-card, .elevation-profile-card {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.zone-buttons-list {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.zone-btn {
  background-color: var(--bg-card);
  color: var(--text-main);
  border: 1px solid var(--border-color);
  padding: 0.6rem 1rem;
  border-radius: var(--radius-sm);
  text-align: left;
  font-size: 0.85rem;
  cursor: pointer;
  transition: all 0.2s ease;
}

.zone-btn:hover {
  background-color: var(--bg-card-hover);
  border-color: var(--accent-green);
}

.zone-btn.active {
  background-color: #14532d;
  border-color: #22c55e;
  font-weight: 600;
}

.elevation-visual-chart {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.elevation-bar-row {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 0.75rem;
}

.elevation-species-label {
  width: 140px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  color: #d1fae5;
}

.elevation-track {
  flex: 1;
  background-color: #1e293b;
  height: 12px;
  border-radius: 6px;
  position: relative;
  overflow: hidden;
}

.elevation-fill {
  position: absolute;
  height: 100%;
  background: linear-gradient(90deg, #10b981, #f59e0b);
  border-radius: 6px;
}

.elevation-val-label {
  width: 80px;
  text-align: right;
  font-family: monospace;
  color: var(--text-dim);
}

/* Data Tables */
.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.85rem;
  margin-top: 0.75rem;
}

.data-table th, .data-table td {
  padding: 0.75rem 1rem;
  border-bottom: 1px solid var(--border-color);
  text-align: left;
}

.data-table th {
  background-color: var(--bg-secondary);
  color: #a7f3d0;
  font-weight: 600;
}

.data-table tr:hover td {
  background-color: rgba(34, 197, 94, 0.05);
}

/* Conservation KPI Cards */
.kpi-summary-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(170px, 1fr));
  gap: 1rem;
  margin: 1.25rem 0;
}

.kpi-card {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.kpi-card.danger {
  border-color: rgba(239, 68, 68, 0.5);
  background-color: rgba(239, 68, 68, 0.08);
}

.kpi-number {
  font-size: 1.8rem;
  font-weight: 800;
  color: #ffffff;
}

.kpi-card.cr .kpi-number { color: #f87171; }
.kpi-card.en .kpi-number { color: #fb923c; }
.kpi-card.vu .kpi-number { color: #facc15; }
.kpi-card.safe .kpi-number { color: #4ade80; }

.kpi-label {
  font-size: 0.75rem;
  color: var(--text-dim);
}

/* Ear-Training Quiz */
.quiz-container {
  max-width: 650px;
  margin: 1rem auto;
}

.quiz-player-card {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  align-items: center;
  text-align: center;
}

.quiz-audio-box {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.75rem;
}

.quiz-question-badge {
  background-color: var(--accent-gold);
  color: #451a03;
  font-size: 0.75rem;
  font-weight: 700;
  padding: 0.25rem 0.75rem;
  border-radius: 9999px;
  text-transform: uppercase;
}

.quiz-hint-text {
  font-size: 0.8rem;
  color: var(--text-dim);
}

.quiz-options-group {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.75rem;
  width: 100%;
}

@media (max-width: 600px) {
  .quiz-options-group {
    grid-template-columns: 1fr;
  }
}

.quiz-opt-btn {
  background-color: var(--bg-card);
  color: var(--text-main);
  border: 1px solid var(--border-color);
  padding: 0.85rem 1rem;
  border-radius: var(--radius-md);
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
  text-align: center;
}

.quiz-opt-btn:hover {
  background-color: var(--bg-card-hover);
  border-color: var(--border-focus);
}

.quiz-feedback {
  background-color: #06110a;
  border: 1px solid var(--accent-green);
  border-radius: var(--radius-md);
  padding: 1.25rem;
  width: 100%;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  text-align: left;
}

.quiz-feedback.hidden {
  display: none;
}

.quiz-feedback.wrong {
  border-color: var(--accent-danger);
}

.secondary-btn {
  background-color: #1e293b;
  color: #f1f5f9;
  border: 1px solid #334155;
  margin-top: 0.5rem;
}

/* Footer */
.app-footer {
  border-top: 1px solid var(--border-color);
  background-color: var(--bg-secondary);
  margin-top: 3rem;
  padding: 1.5rem;
  text-align: center;
  font-size: 0.8rem;
  color: var(--text-dim);
}

.footer-container {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}