/* ==========================================================================
   FoodChain & FoodWeb Consolidated Responsive Stylesheet
   Modern Glassmorphism & High-Contrast Biological Dashboard Theme
   ========================================================================== */

:root {
  --bg-primary: #0f172a;
  --bg-secondary: #1e293b;
  --bg-card: rgba(30, 41, 59, 0.85);
  --bg-hover: #334155;
  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  --text-dim: #64748b;
  --border-color: rgba(255, 255, 255, 0.12);
  --border-focus: #38bdf8;
  
  --color-producer: #22c55e;
  --color-herbivore: #38bdf8;
  --color-carnivore: #ef4444;
  --color-apex: #a855f7;
  --color-warning: #f59e0b;
  
  --primary: #0284c7;
  --primary-hover: #0369a1;
  --secondary: #475569;
  --secondary-hover: #334155;
  --danger: #dc2626;
  --danger-hover: #b91c1c;
  --success: #16a34a;
  --success-hover: #15803d;
  
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 14px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.5);
  
  --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Noto Sans TC", "PingFang TC", "Microsoft JhengHei", sans-serif;
}

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

body {
  font-family: var(--font-family);
  background-color: var(--bg-primary);
  color: var(--text-main);
  min-height: 100vh;
  line-height: 1.5;
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

/* Header & Navigation */
header.app-header {
  background: linear-gradient(180deg, rgba(30, 41, 59, 0.95) 0%, rgba(15, 23, 42, 0.85) 100%);
  border-bottom: 1px solid var(--border-color);
  padding: 1rem 1.25rem 0.5rem;
  backdrop-filter: blur(12px);
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-bottom: 0.75rem;
}

.back-link {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  color: #38bdf8;
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 500;
  padding: 0.4rem 0.8rem;
  border-radius: var(--radius-sm);
  background: rgba(56, 189, 248, 0.1);
  border: 1px solid rgba(56, 189, 248, 0.25);
  transition: all 0.2s ease;
}

.back-link:hover {
  background: rgba(56, 189, 248, 0.2);
  color: #7dd3fc;
  transform: translateX(-2px);
}

.header-title-group h1 {
  font-size: 1.4rem;
  font-weight: 700;
  background: linear-gradient(135deg, #38bdf8 0%, #4ade80 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.header-title-group .subtitle {
  color: var(--text-muted);
  font-size: 0.85rem;
  margin-top: 0.2rem;
}

/* Mode Switcher Tabs */
.tabs-container {
  display: flex;
  gap: 0.5rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  padding-bottom: 0.4rem;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.tab-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.65rem 1.2rem;
  border: none;
  background: transparent;
  color: var(--text-muted);
  font-size: 0.95rem;
  font-weight: 600;
  border-radius: var(--radius-md) var(--radius-md) 0 0;
  cursor: pointer;
  white-space: nowrap;
  transition: all 0.2s ease;
  position: relative;
  min-height: 44px;
}

.tab-btn:hover {
  color: var(--text-main);
  background: rgba(255, 255, 255, 0.04);
}

.tab-btn.active {
  color: #38bdf8;
  background: rgba(56, 189, 248, 0.12);
  border-bottom: 3px solid #38bdf8;
}

/* Main Container */
main.main-content {
  flex: 1;
  padding: 1rem 1.25rem 2rem;
  max-width: 1440px;
  width: 100%;
  margin: 0 auto;
}

.tab-panel {
  display: none;
  animation: fadeIn 0.25s ease-out;
}

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

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(4px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Control Toolbar */
.control-toolbar {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 0.85rem 1.2rem;
  margin-bottom: 1rem;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  box-shadow: var(--shadow-sm);
}

.toolbar-group {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.6rem;
}

.toolbar-label {
  color: var(--text-muted);
  font-size: 0.85rem;
  font-weight: 600;
  margin-right: 0.2rem;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  padding: 0.5rem 0.9rem;
  font-size: 0.88rem;
  font-weight: 600;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  cursor: pointer;
  transition: all 0.15s ease;
  min-height: 40px;
  user-select: none;
  -webkit-tap-highlight-color: transparent;
}

.btn:active {
  transform: scale(0.97);
}

.btn-primary {
  background: #0284c7;
  color: #ffffff;
  border-color: #0369a1;
}
.btn-primary:hover { background: #0369a1; }

.btn-secondary {
  background: #334155;
  color: #f1f5f9;
  border-color: #475569;
}
.btn-secondary:hover { background: #475569; }

.btn-danger {
  background: rgba(239, 68, 68, 0.18);
  color: #fca5a5;
  border-color: rgba(239, 68, 68, 0.4);
}
.btn-danger:hover { background: rgba(239, 68, 68, 0.3); color: #fff; }

.btn-info {
  background: rgba(56, 189, 248, 0.18);
  color: #7dd3fc;
  border-color: rgba(56, 189, 248, 0.4);
}
.btn-info:hover { background: rgba(56, 189, 248, 0.3); color: #fff; }

.btn-success {
  background: rgba(34, 197, 94, 0.18);
  color: #86efac;
  border-color: rgba(34, 197, 94, 0.4);
}
.btn-success:hover { background: rgba(34, 197, 94, 0.3); color: #fff; }

.btn-warning {
  background: rgba(245, 158, 11, 0.18);
  color: #fcd34d;
  border-color: rgba(245, 158, 11, 0.4);
}
.btn-warning:hover { background: rgba(245, 158, 11, 0.3); color: #fff; }

/* Form Controls */
.slider-group {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: rgba(15, 23, 42, 0.6);
  padding: 0.35rem 0.75rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-color);
}

.slider-group input[type="range"] {
  accent-color: #38bdf8;
  cursor: pointer;
  width: 90px;
}

.slider-val {
  font-size: 0.82rem;
  font-weight: 700;
  color: #38bdf8;
  min-width: 32px;
}

.form-select {
  background: var(--bg-primary);
  color: var(--text-main);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  padding: 0.5rem 0.8rem;
  font-size: 0.85rem;
  font-weight: 500;
  cursor: pointer;
  outline: none;
  min-height: 40px;
}
.form-select:focus {
  border-color: var(--border-focus);
}

/* Stats HUD */
.stats-hud {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-bottom: 1rem;
}

.stat-badge {
  flex: 1;
  min-width: 140px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 0.65rem 0.9rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  box-shadow: var(--shadow-sm);
}

.stat-badge.wolf-badge { border-left: 4px solid var(--color-carnivore); }
.stat-badge.sheep-badge { border-left: 4px solid var(--color-herbivore); }
.stat-badge.grass-badge { border-left: 4px solid var(--color-producer); }
.stat-badge.status-badge { border-left: 4px solid var(--color-apex); }

.stat-label {
  font-size: 0.82rem;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 0.35rem;
}

.stat-value {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-main);
}

/* Stage Canvas Container */
.canvas-wrapper {
  background: #020617;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  overflow: hidden;
  position: relative;
  box-shadow: var(--shadow-md);
  display: flex;
  align-items: center;
  justify-content: center;
}

#chainCanvas {
  display: block;
  width: 100%;
  height: 520px;
  background: #0b1329;
  cursor: crosshair;
}

.canvas-hint {
  text-align: center;
  font-size: 0.8rem;
  color: var(--text-dim);
  margin-top: 0.5rem;
}

/* Grid Layout for Mode 2 */
.web-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.25rem;
}

@media (min-width: 1024px) {
  .web-grid {
    grid-template-columns: 1fr 1fr;
  }
}

.web-panel-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 1.25rem;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
}

.card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.85rem;
}

.card-title {
  font-size: 1.05rem;
  font-weight: 700;
  color: #e2e8f0;
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.card-badge {
  font-size: 0.75rem;
  padding: 0.2rem 0.55rem;
  border-radius: 9999px;
  background: rgba(56, 189, 248, 0.15);
  color: #38bdf8;
  border: 1px solid rgba(56, 189, 248, 0.3);
}

#webNetworkCanvas {
  display: block;
  width: 100%;
  height: 380px;
  background: #090d16;
  border-radius: var(--radius-md);
  cursor: pointer;
}

.chart-container {
  position: relative;
  width: 100%;
  height: 380px;
  background: #090d16;
  border-radius: var(--radius-md);
  padding: 0.5rem;
}

#populationChart {
  width: 100% !important;
  height: 100% !important;
}

/* Species Inspector Card */
.species-inspector {
  margin-top: 1rem;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 0.9rem 1.1rem;
}

.inspector-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
  margin-bottom: 0.4rem;
}

.species-name-group {
  display: flex;
  align-items: baseline;
  gap: 0.5rem;
}

.species-name {
  font-size: 1.15rem;
  font-weight: 700;
  color: #f8fafc;
}

.species-latin {
  font-size: 0.8rem;
  font-style: italic;
  color: var(--text-dim);
}

.species-role-tag {
  font-size: 0.75rem;
  font-weight: 600;
  padding: 0.2rem 0.6rem;
  border-radius: 9999px;
}

.role-producer { background: rgba(34, 197, 94, 0.2); color: #86efac; border: 1px solid #22c55e; }
.role-herbivore { background: rgba(56, 189, 248, 0.2); color: #7dd3fc; border: 1px solid #38bdf8; }
.role-carnivore { background: rgba(239, 68, 68, 0.2); color: #fca5a5; border: 1px solid #ef4444; }
.role-apex { background: rgba(168, 85, 247, 0.2); color: #d8b4fe; border: 1px solid #a855f7; }

.species-desc {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 0.6rem;
  line-height: 1.45;
}

.interaction-tags {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.8rem;
  margin-bottom: 0.75rem;
}

.tag-label {
  color: var(--text-dim);
  font-weight: 600;
}

.tag-badge {
  padding: 0.15rem 0.45rem;
  border-radius: var(--radius-sm);
  font-size: 0.75rem;
}

.prey-badge { background: rgba(56, 189, 248, 0.15); color: #7dd3fc; border: 1px solid rgba(56, 189, 248, 0.3); }
.predator-badge { background: rgba(239, 68, 68, 0.15); color: #fca5a5; border: 1px solid rgba(239, 68, 68, 0.3); }

.inspector-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding-top: 0.6rem;
}

/* Educational Info Cards */
.guide-card {
  margin-top: 1.5rem;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 1.25rem 1.5rem;
}

.guide-card h4 {
  font-size: 1rem;
  font-weight: 700;
  color: #38bdf8;
  margin-bottom: 0.5rem;
}

.guide-card p {
  font-size: 0.88rem;
  color: var(--text-muted);
  line-height: 1.6;
  margin-bottom: 0.5rem;
}

.guide-card ul {
  list-style-type: none;
  padding-left: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.5rem;
  margin-top: 0.75rem;
}

@media (min-width: 768px) {
  .guide-card ul {
    grid-template-columns: repeat(3, 1fr);
  }
}

.guide-card li {
  font-size: 0.82rem;
  background: rgba(15, 23, 42, 0.6);
  padding: 0.6rem 0.8rem;
  border-radius: var(--radius-sm);
  border-left: 3px solid #38bdf8;
  color: #cbd5e1;
}

/* Footer */
footer.app-footer {
  text-align: center;
  padding: 1.25rem;
  color: var(--text-dim);
  font-size: 0.8rem;
  border-top: 1px solid var(--border-color);
  background: var(--bg-primary);
  margin-top: auto;
}

/* Mobile & Touch Optimizations */
@media (max-width: 768px) {
  .header-top {
    flex-direction: column;
    align-items: flex-start;
  }
  
  .control-toolbar {
    flex-direction: column;
    align-items: stretch;
    gap: 0.75rem;
  }
  
  .toolbar-group {
    justify-content: stretch;
  }
  
  .btn {
    flex: 1;
    min-width: 120px;
  }
  
  #chainCanvas {
    height: 380px;
  }
  
  #webNetworkCanvas, .chart-container {
    height: 300px;
  }
}