/* Trail Companion — Modern Clean White & Emerald Green Design System */
:root {
  /* Core Clean White & Green Palette */
  --bg: #f8faf9;
  --bg-card: #ffffff;
  --bg-card-subtle: #f0fdf4;
  --bg-hover: #e8f7ee;
  
  --primary: #15803d;         /* Lush Forest Green */
  --primary-hover: #166534;
  --primary-light: #22c55e;
  --primary-tint: #dcfce7;
  --primary-border: #bbf7d0;

  --accent-emerald: #059669;
  --accent-sage: #84cc16;
  --accent-amber: #d97706;
  --accent-amber-light: #fef3c7;
  --danger: #dc2626;
  --danger-light: #fee2e2;

  --text-main: #0f172a;        /* Deep Slate */
  --text-muted: #64748b;       /* Cool Muted Grey */
  --text-subtle: #94a3b8;
  --text-inverse: #ffffff;

  --border: #e2e8f0;
  --border-green: #bbf7d0;
  --border-focus: #16a34a;

  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-xl: 28px;
  --radius-full: 9999px;

  --shadow-sm: 0 1px 3px rgba(15, 23, 42, 0.05);
  --shadow-md: 0 4px 14px -2px rgba(15, 23, 42, 0.06), 0 2px 6px -1px rgba(15, 23, 42, 0.04);
  --shadow-lg: 0 12px 28px -6px rgba(22, 101, 52, 0.12), 0 4px 10px -2px rgba(15, 23, 42, 0.04);
  --shadow-glow: 0 0 25px rgba(34, 197, 94, 0.22);

  --font-sans: 'Outfit', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-serif: 'Fraunces', Georgia, serif;
  --nav-height: 72px;
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-sans);
  background-color: var(--bg);
  color: var(--text-main);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* Subtle Natural Radial Gradient Accent */
.ambient-bg {
  position: fixed;
  inset: 0;
  background: 
    radial-gradient(circle at 10% 10%, rgba(220, 252, 231, 0.6) 0%, transparent 40%),
    radial-gradient(circle at 90% 20%, rgba(240, 253, 244, 0.8) 0%, transparent 45%),
    radial-gradient(circle at 50% 90%, rgba(220, 252, 231, 0.4) 0%, transparent 50%);
  pointer-events: none;
  z-index: -1;
}

a {
  color: var(--primary);
  text-decoration: none;
  transition: color 0.15s ease;
}
a:hover {
  color: var(--primary-hover);
}

h1, h2, h3, h4 {
  color: var(--text-main);
  font-weight: 700;
  line-height: 1.25;
}

h1 {
  font-family: var(--font-serif);
  font-size: clamp(2.4rem, 5vw, 3.8rem);
  letter-spacing: -0.03em;
}

h2 {
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  letter-spacing: -0.02em;
}

h3 {
  font-size: 1.25rem;
}

p {
  color: var(--text-muted);
}

[hidden] {
  display: none !important;
}

/* ─────────────────────────────────────────────────────────
   TOP NAVIGATION
───────────────────────────────────────────────────────── */
.navbar {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--nav-height);
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
}

.nav-container {
  max-width: 1240px;
  height: 100%;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.brand-link {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-main);
}
.brand-link img {
  border-radius: var(--radius-sm);
  box-shadow: 0 2px 8px rgba(22, 101, 52, 0.2);
}
.brand-link b {
  color: var(--primary);
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 8px;
  list-style: none;
}

.nav-item a {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  border-radius: var(--radius-full);
  font-weight: 500;
  font-size: 0.95rem;
  color: var(--text-muted);
  transition: all 0.2s ease;
}
.nav-item a:hover {
  color: var(--primary);
  background: var(--bg-hover);
}
.nav-item a.active {
  color: var(--primary);
  background: var(--primary-tint);
  font-weight: 600;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

/* Status Pill */
.model-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-full);
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-muted);
  cursor: pointer;
  box-shadow: var(--shadow-sm);
  transition: all 0.2s;
}
.model-pill:hover {
  border-color: var(--primary-border);
  background: var(--bg-card-subtle);
}
.model-pill .dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--text-subtle);
}
.model-pill.ready .dot {
  background: var(--primary-light);
  box-shadow: 0 0 8px var(--primary-light);
}
.model-pill.loading .dot {
  background: var(--accent-amber);
  animation: pulse 1s infinite;
}
.model-pill.error .dot {
  background: var(--danger);
}
@keyframes pulse {
  50% { opacity: 0.3; }
}

/* ─────────────────────────────────────────────────────────
   BUTTONS & BADGES
───────────────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: var(--radius-full);
  font-family: var(--font-sans);
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  border: 1px solid transparent;
  transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
  text-decoration: none;
}
.btn:active {
  transform: scale(0.98);
}
.btn-primary {
  background: var(--primary);
  color: #ffffff !important;
  box-shadow: 0 4px 12px rgba(21, 128, 61, 0.25);
}
.btn-primary:hover {
  background: var(--primary-hover);
  box-shadow: 0 6px 16px rgba(21, 128, 61, 0.35);
  transform: translateY(-1px);
}
.btn-secondary {
  background: #ffffff;
  color: var(--primary) !important;
  border-color: var(--border-green);
  box-shadow: var(--shadow-sm);
}
.btn-secondary:hover {
  background: var(--bg-card-subtle);
  border-color: var(--primary);
}
.btn-outline {
  background: transparent;
  color: var(--text-main) !important;
  border-color: var(--border);
}
.btn-outline:hover {
  background: #ffffff;
  border-color: var(--text-muted);
}
.btn-sm {
  padding: 8px 16px;
  font-size: 0.85rem;
}
.btn-lg {
  padding: 16px 32px;
  font-size: 1.05rem;
}

.chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  border-radius: var(--radius-full);
  font-size: 0.85rem;
  font-weight: 500;
  background: #ffffff;
  border: 1px solid var(--border);
  color: var(--text-main);
  transition: all 0.15s ease;
}
.chip.active, button.chip:hover {
  border-color: var(--primary);
  background: var(--primary-tint);
  color: var(--primary-hover);
}
.badge-green {
  background: var(--primary-tint);
  color: var(--primary-hover);
  border: 1px solid var(--primary-border);
  font-size: 0.8rem;
  font-weight: 600;
  padding: 4px 12px;
  border-radius: var(--radius-full);
}

/* ─────────────────────────────────────────────────────────
   CONTAINER & VIEW SWITCHING
───────────────────────────────────────────────────────── */
.main-wrapper {
  flex: 1;
  max-width: 1240px;
  width: 100%;
  margin: 0 auto;
  padding: 32px 24px 60px;
}

.view-section {
  display: none;
  animation: fadeIn 0.35s ease;
}
.view-section.active {
  display: block;
}
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Card Surface */
.white-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: 32px;
  box-shadow: var(--shadow-md);
  position: relative;
  overflow: hidden;
}

/* ─────────────────────────────────────────────────────────
   1. LANDING PAGE VIEW
───────────────────────────────────────────────────────── */
.landing-hero {
  text-align: center;
  max-width: 860px;
  margin: 20px auto 60px;
}
.landing-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 20px;
}
.landing-title {
  margin-bottom: 20px;
}
.landing-title em {
  font-style: normal;
  color: var(--primary);
  position: relative;
}
.landing-subtitle {
  font-size: 1.25rem;
  line-height: 1.6;
  color: var(--text-muted);
  margin-bottom: 36px;
}
.landing-cta-group {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
}

/* Stat Banner */
.stats-strip {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-bottom: 60px;
}
.stat-box {
  background: #ffffff;
  border: 1px solid var(--border-green);
  border-radius: var(--radius-lg);
  padding: 24px;
  text-align: center;
  box-shadow: var(--shadow-sm);
}
.stat-val {
  font-size: 2.2rem;
  font-weight: 800;
  color: var(--primary);
  line-height: 1;
  margin-bottom: 6px;
}
.stat-label {
  font-size: 0.9rem;
  color: var(--text-muted);
  font-weight: 500;
}

/* Bento Features Grid */
.bento-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-bottom: 60px;
}
.bento-item {
  background: #ffffff;
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: 32px;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  gap: 16px;
  transition: all 0.25s ease;
}
.bento-item:hover {
  transform: translateY(-4px);
  border-color: var(--primary-border);
  box-shadow: var(--shadow-lg);
}
.bento-span-2 {
  grid-column: span 2;
}
.bento-icon {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-md);
  background: var(--bg-card-subtle);
  border: 1px solid var(--primary-border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.6rem;
}
.bento-item h3 {
  color: var(--text-main);
  font-size: 1.3rem;
}
.bento-item p {
  font-size: 0.95rem;
  line-height: 1.6;
}

/* ─────────────────────────────────────────────────────────
   2. SCANNER WORKSTATION VIEW
───────────────────────────────────────────────────────── */
.scanner-grid {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 32px;
  align-items: start;
}

.scanner-left {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

/* Viewfinder Area */
.viewfinder-card {
  text-align: center;
  padding: 40px 24px;
  background: #ffffff;
  border: 2px dashed var(--border-green);
  border-radius: var(--radius-xl);
}
.shutter-circle {
  width: 120px;
  height: 120px;
  margin: 20px auto;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--primary-light));
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  box-shadow: 0 10px 30px rgba(22, 163, 74, 0.35);
  transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
}
.shutter-circle:hover {
  transform: scale(1.05);
}
.shutter-circle svg {
  width: 50px;
  height: 50px;
  fill: #ffffff;
}

/* Live Camera Stream Container */
.live-stream-box {
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: #0f172a;
  position: relative;
  aspect-ratio: 4/3;
  margin-top: 16px;
}
.live-stream-box video {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.camera-reticle {
  position: absolute;
  inset: 24px;
  border: 2px dashed rgba(34, 197, 94, 0.6);
  border-radius: var(--radius-md);
  pointer-events: none;
}
.camera-actions-bar {
  position: absolute;
  bottom: 16px;
  left: 0;
  right: 0;
  display: flex;
  justify-content: center;
  gap: 16px;
}

/* Sample Photo Deck */
.sample-gallery {
  margin-top: 12px;
}
.sample-gallery-title {
  font-size: 0.85rem;
  font-weight: 600;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 12px;
}
.sample-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
}
.sample-thumb-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 10px;
  text-align: center;
  cursor: pointer;
  transition: all 0.2s;
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 600;
  font-size: 0.85rem;
}
.sample-thumb-card:hover {
  background: var(--bg-card-subtle);
  border-color: var(--primary);
  transform: translateY(-2px);
}
.sample-thumb-card.sample-neg {
  background: #fff7ed;
  border-color: #ffedd5;
  color: #c2410c;
}

/* Scanner Results Card */
.result-card {
  background: #ffffff;
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}
.result-photo-wrap {
  aspect-ratio: 16/10;
  background: #f1f5f9;
  position: relative;
  overflow: hidden;
}
.result-photo-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.result-scan-overlay {
  position: absolute;
  inset: 0;
  background: rgba(15, 23, 42, 0.45);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  color: #ffffff;
  gap: 12px;
}
.result-details {
  padding: 28px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.result-meta-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.species-title {
  font-family: var(--font-serif);
  font-size: 1.85rem;
  color: var(--text-main);
}
.species-scientific {
  font-style: italic;
  color: var(--primary);
  font-weight: 500;
}
.confidence-bar-wrap {
  height: 8px;
  background: var(--border);
  border-radius: var(--radius-full);
  overflow: hidden;
  margin: 6px 0;
}
.confidence-bar-fill {
  height: 100%;
  background: var(--primary);
  border-radius: var(--radius-full);
  transition: width 0.4s ease;
}
.outdoor-cue-box {
  background: var(--bg-card-subtle);
  border-left: 4px solid var(--primary);
  padding: 14px 18px;
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
}

/* ─────────────────────────────────────────────────────────
   3. FIELD GUIDE VIEW
───────────────────────────────────────────────────────── */
.guide-header {
  margin-bottom: 24px;
}
.guide-search-box {
  position: relative;
  margin: 20px 0 16px;
}
.guide-search-input {
  width: 100%;
  padding: 14px 20px 14px 44px;
  border: 1px solid var(--border);
  border-radius: var(--radius-full);
  background: #ffffff;
  font-size: 1rem;
  font-family: var(--font-sans);
  color: var(--text-main);
  outline: none;
  box-shadow: var(--shadow-sm);
  transition: all 0.2s;
}
.guide-search-input:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--primary-tint);
}
.guide-search-icon {
  position: absolute;
  left: 16px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-subtle);
  font-size: 1.1rem;
}

.guide-category-filters {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.guide-cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 20px;
  margin-top: 24px;
}
.guide-card-item {
  background: #ffffff;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 24px;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  gap: 12px;
  transition: all 0.2s ease;
}
.guide-card-item:hover {
  border-color: var(--primary-border);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

/* ─────────────────────────────────────────────────────────
   4. WALK MODE & TOUCH GRASS VIEW
───────────────────────────────────────────────────────── */
.walk-dashboard-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 28px;
}

.offscreen-meter-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: 36px 24px;
}
.meter-svg-wrap {
  width: 180px;
  height: 180px;
  position: relative;
  margin: 16px 0;
}
.meter-svg-wrap svg {
  transform: rotate(-90deg);
  width: 100%;
  height: 100%;
}
.meter-track {
  fill: none;
  stroke: var(--border);
  stroke-width: 12;
}
.meter-progress {
  fill: none;
  stroke: var(--primary);
  stroke-width: 12;
  stroke-linecap: round;
  transition: stroke-dashoffset 0.6s ease;
}
.meter-center-text {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}
.meter-pct {
  font-size: 2.2rem;
  font-weight: 800;
  color: var(--primary);
}

/* Trail Badges Grid */
.badges-container-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin-top: 16px;
}
.badge-slot {
  background: #ffffff;
  border: 1px dashed var(--border);
  border-radius: var(--radius-md);
  padding: 16px 12px;
  text-align: center;
  opacity: 0.55;
  transition: all 0.3s;
}
.badge-slot.unlocked {
  opacity: 1;
  border-style: solid;
  border-color: var(--border-green);
  background: var(--bg-card-subtle);
  box-shadow: var(--shadow-sm);
}
.badge-slot-icon {
  font-size: 2.2rem;
  margin-bottom: 6px;
}

/* Bingo 3x3 */
.bingo-board {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin-top: 16px;
}
.bingo-cell {
  aspect-ratio: 1;
  background: #ffffff;
  border: 1px dashed var(--border);
  border-radius: var(--radius-md);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 8px;
  text-align: center;
  font-size: 0.8rem;
  color: var(--text-muted);
  transition: all 0.25s;
}
.bingo-cell.done {
  background: var(--bg-card-subtle);
  border: 2px solid var(--primary);
  color: var(--text-main);
  font-weight: 600;
  transform: scale(1.02);
}

/* ─────────────────────────────────────────────────────────
   5. JOURNAL & NATURE PASSPORT VIEW
───────────────────────────────────────────────────────── */
.journal-stats-bar {
  display: flex;
  gap: 32px;
  margin: 20px 0;
  padding: 18px 24px;
  background: var(--bg-card-subtle);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-green);
}

.journal-finds-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 20px;
  margin-top: 24px;
}
.journal-item-card {
  background: #ffffff;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: all 0.2s;
}
.journal-item-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}
.journal-item-thumb {
  aspect-ratio: 4/3;
  width: 100%;
  object-fit: cover;
}
.journal-item-caption {
  padding: 16px;
}

/* ─────────────────────────────────────────────────────────
   MODAL & TOAST
───────────────────────────────────────────────────────── */
.clean-modal {
  border: none;
  border-radius: var(--radius-xl);
  background: #ffffff;
  color: var(--text-main);
  box-shadow: var(--shadow-lg);
  max-width: 640px;
  width: 90%;
  margin: auto;
  padding: 32px;
}
.clean-modal::backdrop {
  background: rgba(15, 23, 42, 0.4);
  backdrop-filter: blur(6px);
}

.toast-msg {
  position: fixed;
  bottom: 24px;
  right: 24px;
  background: var(--text-main);
  color: #ffffff;
  padding: 14px 24px;
  border-radius: var(--radius-full);
  font-weight: 500;
  box-shadow: var(--shadow-lg);
  z-index: 1000;
  animation: slideUp 0.3s ease;
}
@keyframes slideUp {
  from { transform: translateY(20px); opacity: 0; }
  to { transform: translateY(0); opacity: 1; }
}

/* ─────────────────────────────────────────────────────────
   RESPONSIVE DESIGN
───────────────────────────────────────────────────────── */
@media (max-width: 900px) {
  .bento-grid, .stats-strip {
    grid-template-columns: repeat(2, 1fr);
  }
  .bento-span-2 {
    grid-column: span 1;
  }
  .scanner-grid, .walk-dashboard-grid {
    grid-template-columns: 1fr;
  }
  .badges-container-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 640px) {
  .nav-menu {
    display: none; /* Mobile toggle or clean icon list */
  }
  .stats-strip {
    grid-template-columns: 1fr;
  }
  .sample-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}