/* Color palette and shared layout values */
:root {
  --bg: #f6fbf7;
  --white: #ffffff;
  --primary: #69b86f;
  --primary-dark: #4f9f59;
  --primary-soft: #e8f6ea;
  --text: #18231b;
  --muted: #5f6f63;
  --border: #dfeee1;
  --shadow: 0 10px 30px rgba(50, 90, 60, 0.08);
  --shadow-soft: inset 0 1px 0 rgba(255, 255, 255, 0.65);
  --container: 1180px;
}

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

html {
  scroll-behavior: smooth;
}

/* Base page styling */
body {
  font-family: "Inter", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.65;
}

a {
  text-decoration: none;
  color: inherit;
}

/* Shared page width container */
.container {
  width: min(92%, var(--container));
  margin: 0 auto;
}

/* Top navigation bar */
.navbar {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}

.nav-inner {
  min-height: 76px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.brand {
  font-size: 1.45rem;
  font-weight: 800;
  color: var(--primary-dark);
  letter-spacing: -0.02em;
}

.nav-links a {
  padding: 10px 14px;
  border-radius: 10px;
  transition: 0.2s ease;
  color: var(--muted);
  font-weight: 600;
}

.nav-links a:hover {
  background: var(--primary-soft);
  color: var(--primary-dark);
}

/* Hero / intro banner */
.hero {
  background: linear-gradient(135deg, #69b86f 0%, #5cab64 50%, #4f9f59 100%);
  color: white;
  padding: 92px 0 82px;
}

.hero-content {
  max-width: 860px;
}

.eyebrow {
  display: inline-block;
  font-size: 0.95rem;
  font-weight: 700;
  margin-bottom: 14px;
  opacity: 0.96;
}

.hero h1 {
  font-size: clamp(2.5rem, 5vw, 4.2rem);
  line-height: 1.06;
  font-weight: 800;
  letter-spacing: -0.03em;
  margin-bottom: 18px;
}

.subtitle {
  font-size: 1.13rem;
  max-width: 760px;
  color: rgba(255, 255, 255, 0.95);
}

/* Main page sections */
.main-content {
  padding: 70px 0;
  display: grid;
  gap: 30px;
}

/* Reusable white card */
.content-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: 22px;
  box-shadow: var(--shadow);
  padding: 28px;
}

.content-card h2 {
  font-size: 1.45rem;
  margin-bottom: 12px;
  color: var(--primary-dark);
  letter-spacing: -0.02em;
}

.content-card h3 {
  font-size: 1.02rem;
  margin-bottom: 8px;
  color: var(--primary-dark);
}

.content-card p {
  color: var(--muted);
  font-size: 1rem;
}

/* Filter dropdown layout for Phase 2 route selection */
.filter-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin-top: 8px;
}

.filter-group label {
  display: block;
  margin-bottom: 8px;
  color: var(--primary-dark);
  font-weight: 700;
  font-size: 0.95rem;
}

.filter-group select {
  width: 100%;
  padding: 12px 14px;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--white);
  color: var(--text);
  font: inherit;
  outline: none;
}

.filter-group select:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(105, 184, 111, 0.12);
}

/* Section header with title and subtitle */
.section-header {
  display: flex;
  justify-content: space-between;
  align-items: end;
  gap: 16px;
}

.section-subtitle {
  color: var(--muted);
  font-size: 0.98rem;
  margin-top: -2px;
}

/* Top score summary box */
.score-box {
  margin-top: 18px;
  padding: 18px;
  border-radius: 16px;
  background: var(--primary-soft);
  border: 1px solid var(--border);
  color: var(--text);
  font-weight: 600;
}

.score-line + .score-line {
  margin-top: 4px;
}

/* Leaflet live map */
#liveMap {
  width: 100%;
  height: 540px;
  margin-top: 14px;
  border-radius: 18px;
  overflow: hidden;
  border: 1px solid var(--border);
}

/* Graph layout */
.chart-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

.chart-card {
  min-height: 420px;
}

.chart-wrap {
  height: 330px;
  margin-top: 8px;
}

/* Info card layouts */
.info-grid {
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 24px;
}

.small-info-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

/* Mini stat cards */
.summary-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin-top: 8px;
}

.mini-stat {
  background: linear-gradient(180deg, #edf7ef 0%, #e8f3ea 100%);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 16px;
  box-shadow: var(--shadow-soft);
}

.mini-stat-label {
  display: block;
  font-size: 0.92rem;
  color: var(--muted);
  font-weight: 700;
  margin-bottom: 6px;
}

.mini-stat-value {
  display: block;
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--primary-dark);
}

/* Status and score explanation pills */
.status-list,
.metric-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.status-pill,
.metric-pill {
  padding: 14px 16px;
  border-radius: 14px;
  border: 1px solid var(--border);
  background: var(--primary-soft);
  color: var(--text);
}

/* Stacked text layout for problem / solution */
.stacked-copy {
  display: flex;
  flex-direction: column;
  gap: 22px;
  margin-top: 4px;
}

.stacked-block h3 {
  color: var(--primary-dark);
  font-size: 1.28rem;
  font-weight: 700;
  margin-bottom: 10px;
}

.stacked-block p {
  color: var(--muted);
  font-size: 1.12rem;
  line-height: 1.8;
}

/* Table styling */
.table-wrap {
  overflow-x: auto;
}

.bus-table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 12px;
}

.bus-table th,
.bus-table td {
  text-align: left;
  padding: 14px 16px;
  border-bottom: 1px solid var(--border);
}

.bus-table th {
  color: var(--primary-dark);
  font-weight: 800;
  font-size: 0.98rem;
}

.bus-table td {
  color: var(--text);
  font-size: 0.97rem;
}

/* Leaflet popup styling */
.leaflet-popup-content-wrapper {
  border-radius: 14px;
}

.leaflet-popup-content {
  font-family: "Inter", sans-serif;
  color: var(--text);
  line-height: 1.5;
}

/* Footer */
footer {
  padding: 30px 0 52px;
  text-align: center;
  color: var(--muted);
  font-size: 0.96rem;
}

/* Medium screen support */
@media (max-width: 1100px) {
  .summary-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .filter-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* Tablet / smaller laptop support */
@media (max-width: 980px) {
  .chart-grid,
  .info-grid,
  .summary-grid,
  .small-info-grid {
    grid-template-columns: 1fr;
  }

  .chart-card {
    min-height: 380px;
  }

  .chart-wrap {
    height: 300px;
  }

  #liveMap {
    height: 450px;
  }
}

/* Mobile support */
@media (max-width: 760px) {
  .nav-inner {
    flex-direction: column;
    align-items: flex-start;
    justify-content: center;
    padding: 14px 0;
  }

  .brand {
    font-size: 1.28rem;
  }

  .hero {
    padding: 72px 0 60px;
  }

  .hero h1 {
    font-size: 2.55rem;
  }

  .subtitle {
    font-size: 1.02rem;
  }

  .main-content {
    padding: 50px 0;
  }

  .content-card {
    padding: 22px;
    border-radius: 18px;
  }

  .content-card h2 {
    font-size: 1.28rem;
  }

  #liveMap {
    height: 360px;
  }

  .filter-grid {
    grid-template-columns: 1fr;
  }
}