/* SVBC Bike Lanes Tracker - Branded Styles */
/* Silicon Valley Bicycle Coalition Brand Colors */

:root {
  /* SVBC Brand Colors */
  --svbc-yellow: #F5B800;
  --svbc-yellow-dark: #D9A300;
  --svbc-yellow-light: #FFF3CC;
  --svbc-black: #1a1a1a;
  --svbc-charcoal: #2d2d2d;

  /* Semantic Colors */
  --color-primary: var(--svbc-yellow);
  --color-primary-dark: var(--svbc-yellow-dark);
  --color-text: var(--svbc-black);
  --color-text-light: #444;
  --color-muted: #666;
  --color-bg: #fff;
  --color-bg-alt: #f8f9fa;
  --color-border: #e9ecef;

  /* Status Colors */
  --color-positive: #28a745;
  --color-negative: #dc3545;

  /* Layout */
  --max-width: 1200px;
  --header-height: 70px;
}

/* Reset & Base */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  line-height: 1.6;
  color: var(--color-text);
  background-color: var(--color-bg);
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

/* Links */
a {
  color: var(--svbc-charcoal);
  text-decoration: underline;
  text-decoration-color: var(--svbc-yellow);
  text-underline-offset: 3px;
  transition: color 0.2s ease;
}

a:hover {
  color: var(--svbc-yellow-dark);
}

/* Header */
header {
  background: var(--svbc-black);
  color: white;
  padding: 0.75rem 1rem;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
}

header nav {
  max-width: var(--max-width);
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: 1rem;
}

header .logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  color: white;
  text-decoration: none;
  font-weight: bold;
  font-size: 1.1rem;
}

header .logo:hover {
  color: var(--svbc-yellow);
}

header .logo img {
  height: 45px;
  width: auto;
}

header .site-title {
  color: var(--svbc-yellow);
  font-size: 1rem;
  font-weight: 600;
  border-left: 2px solid var(--svbc-yellow);
  padding-left: 0.75rem;
  flex: 1;
}

/* Unit Toggle */
.unit-toggle {
  display: flex;
  gap: 0;
  background: var(--svbc-charcoal);
  border-radius: 6px;
  padding: 3px;
}

.unit-btn {
  padding: 0.4rem 0.75rem;
  font-size: 0.85rem;
  font-weight: 600;
  text-decoration: none;
  color: #999;
  border-radius: 4px;
  transition: all 0.2s ease;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.unit-btn:hover {
  color: white;
  background: rgba(255, 255, 255, 0.1);
}

.unit-btn.active {
  color: var(--svbc-black);
  background: var(--svbc-yellow);
}

.unit-btn.active:hover {
  background: var(--svbc-yellow-dark);
}

/* Main Content */
main {
  flex: 1;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 2rem 1rem;
  width: 100%;
}

/* Typography */
h1 {
  font-size: 2rem;
  margin-bottom: 0.5rem;
  color: var(--svbc-black);
}

h2 {
  font-size: 1.5rem;
  margin-bottom: 1rem;
  color: var(--svbc-charcoal);
  padding-bottom: 0.5rem;
  border-bottom: 3px solid var(--svbc-yellow);
}

h3 {
  font-size: 1.25rem;
  margin-bottom: 0.75rem;
  margin-top: 1.5rem;
  color: var(--svbc-charcoal);
}

p {
  margin-bottom: 1rem;
}

ul {
  margin-left: 1.5rem;
  margin-bottom: 1rem;
}

/* Sections */
section {
  margin-bottom: 3rem;
}

/* Stat Cards */
.summary {
  background: linear-gradient(135deg, var(--svbc-black) 0%, var(--svbc-charcoal) 100%);
  padding: 2rem;
  border-radius: 12px;
  margin-bottom: 3rem;
}

.summary h2 {
  color: white;
  border-bottom-color: var(--svbc-yellow);
}

.summary h3 {
  color: rgba(255, 255, 255, 0.9);
  font-size: 1rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-top: 1.5rem;
  margin-bottom: 1rem;
}

.stat-cards-grid {
  grid-template-columns: repeat(4, 1fr);
}

.stat-cards-grid .stat-card {
  padding: 1rem;
}

.stat-cards-grid .stat-value {
  font-size: 1.75rem;
}

.stat-cards-grid .stat-label {
  font-size: 0.7rem;
  line-height: 1.3;
}

.stat-cards-grid .stat-alt {
  font-size: 0.85rem;
  margin-top: 0.25rem;
}

.stat-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 1.5rem;
}

.stat-card {
  background: white;
  border-radius: 12px;
  padding: 1.5rem;
  text-align: center;
  border-left: 4px solid var(--svbc-yellow);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.stat-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(0, 0, 0, 0.15);
}

.stat-card-large {
  max-width: 400px;
  margin: 0 auto;
  padding: 2rem 3rem;
}

.stat-card-large .stat-value {
  font-size: 3.5rem;
}

.stat-card-large .stat-label {
  font-size: 1rem;
}

.stat-alt {
  display: block;
  font-size: 1.1rem;
  color: var(--color-muted);
  margin-top: 0.5rem;
}

.stat-value {
  display: block;
  font-size: 2.5rem;
  font-weight: bold;
  color: var(--svbc-black);
  line-height: 1.2;
}

.stat-label {
  display: block;
  color: var(--color-muted);
  font-size: 0.875rem;
  margin-top: 0.5rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

/* Decimal styling - de-emphasized tenths */
.decimal {
  color: var(--color-muted);
  font-size: 0.75em;
  vertical-align: baseline;
}

/* Tables - Desktop */
.table-container {
  overflow-x: auto;
  margin-bottom: 1rem;
  border-radius: 8px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
}

table {
  width: 100%;
  border-collapse: collapse;
  margin-bottom: 1rem;
  background: white;
}

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

th {
  background: var(--svbc-black);
  color: white;
  font-weight: 600;
  text-transform: uppercase;
  font-size: 0.8rem;
  letter-spacing: 0.5px;
}

th:first-child {
  border-radius: 8px 0 0 0;
}

th:last-child {
  border-radius: 0 8px 0 0;
}

tbody tr {
  transition: background-color 0.15s ease;
}

tbody tr:hover {
  background: var(--svbc-yellow-light);
}

tbody tr:nth-child(even) {
  background: var(--color-bg-alt);
}

tbody tr:nth-child(even):hover {
  background: var(--svbc-yellow-light);
}

/* Numeric columns alignment and fixed widths */
td:nth-child(2),
td:nth-child(3),
td:nth-child(4),
td:nth-child(5),
td:nth-child(6),
th:nth-child(2),
th:nth-child(3),
th:nth-child(4),
th:nth-child(5),
th:nth-child(6) {
  text-align: right;
  width: 90px;
  min-width: 90px;
}

/* City-class table with narrower columns */
.city-class-table td:nth-child(n+2),
.city-class-table th:nth-child(n+2) {
  width: 75px;
  min-width: 75px;
  font-size: 0.9rem;
  white-space: nowrap;
}

/* Unincorporated areas - muted styling */
.city-unincorporated {
  color: var(--color-muted);
  font-style: italic;
}

/* Change indicators */
.change {
  font-weight: 600;
}

.change.positive {
  color: var(--color-positive);
}

.change.negative {
  color: var(--color-negative);
}

/* Footer */
footer {
  background: var(--svbc-black);
  color: #ccc;
  padding: 1.5rem 1rem;
  text-align: center;
  font-size: 0.875rem;
}

footer a {
  color: var(--svbc-yellow);
  text-decoration: none;
}

footer a:hover {
  text-decoration: underline;
}

footer p {
  margin-bottom: 0.5rem;
}

footer p:last-child {
  margin-bottom: 0;
}

/* Methodology section */
.methodology {
  background: var(--color-bg-alt);
  padding: 1.5rem 2rem;
  border-radius: 8px;
  margin-bottom: 2rem;
}

.methodology h2 {
  border-bottom-color: var(--color-muted);
}

.methodology h3 {
  font-size: 1.1rem;
  margin-top: 1.25rem;
  margin-bottom: 0.5rem;
  color: var(--color-text-light);
}

.methodology ul {
  margin-left: 1.25rem;
  margin-bottom: 1rem;
}

.methodology li {
  margin-bottom: 0.5rem;
  line-height: 1.5;
}

/* Data info section (above main footer) */
.data-info {
  margin-top: 3rem;
  padding: 1.5rem;
  background: var(--color-bg-alt);
  border-radius: 8px;
  border-left: 4px solid var(--svbc-yellow);
  color: var(--color-muted);
}

.data-info p {
  margin-bottom: 0.25rem;
}

.data-info p:last-child {
  margin-bottom: 0;
}

/* Download buttons */
.download-buttons {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.75rem;
  margin-top: 1rem;
}

.btn-download {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.6rem 1.2rem;
  background: var(--svbc-yellow);
  color: var(--svbc-black) !important;
  text-decoration: none !important;
  border-radius: 6px;
  font-weight: 600;
  font-size: 0.9rem;
  transition: all 0.2s ease;
}

.btn-download:hover {
  background: var(--svbc-yellow-dark);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(245, 184, 0, 0.3);
}

.btn-download svg {
  flex-shrink: 0;
}

/* No data message */
.no-data {
  color: var(--color-muted);
  font-style: italic;
  padding: 2rem;
  text-align: center;
  background: var(--color-bg-alt);
  border-radius: 8px;
}

/* Source badge for supplemental data */
.source-badge {
  display: inline-block;
  color: var(--svbc-yellow-dark);
  font-weight: bold;
  margin-left: 0.25rem;
  cursor: help;
}

/* ==========================================
   RESPONSIVE DESIGN
   ========================================== */

/* Tablet - 992px and below */
@media (max-width: 992px) {
  h1 {
    font-size: 1.75rem;
  }

  h2 {
    font-size: 1.35rem;
  }

  .stat-value {
    font-size: 2rem;
  }

  .stat-card-large .stat-value {
    font-size: 3rem;
  }

  th, td {
    padding: 0.75rem;
  }
}

/* Large mobile / Small tablet - 768px and below */
@media (max-width: 768px) {
  header .site-title {
    display: none;
  }

  .unit-toggle {
    margin-left: auto;
  }

  .summary {
    padding: 1.5rem;
  }

  .stat-cards {
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
  }

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

  .stat-card {
    padding: 1rem;
  }

  .stat-card-large {
    padding: 1.5rem 2rem;
  }

  .stat-value {
    font-size: 1.75rem;
  }

  .stat-card-large .stat-value {
    font-size: 2.5rem;
  }
}

/* Mobile - 576px and below: Tables become cards */
@media (max-width: 576px) {
  main {
    padding: 1rem;
  }

  h1 {
    font-size: 1.5rem;
  }

  h2 {
    font-size: 1.25rem;
  }

  h3 {
    font-size: 1.1rem;
  }

  section {
    margin-bottom: 2rem;
  }

  /* Stat cards stack */
  .stat-cards {
    grid-template-columns: 1fr;
  }

  /* Transform tables to card layout */
  table, thead, tbody, th, td, tr {
    display: block;
  }

  thead {
    position: absolute;
    top: -9999px;
    left: -9999px;
  }

  tbody tr {
    margin-bottom: 1rem;
    border: 1px solid var(--color-border);
    border-radius: 8px;
    padding: 0;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
    background: white;
  }

  tbody tr:nth-child(even) {
    background: white;
  }

  tbody tr:hover {
    background: var(--svbc-yellow-light);
  }

  td {
    border: none;
    border-bottom: 1px solid var(--color-border);
    position: relative;
    padding: 0.75rem 0.75rem 0.75rem 50%;
    text-align: right;
    min-height: 44px;
  }

  td:last-child {
    border-bottom: none;
  }

  td::before {
    position: absolute;
    left: 0.75rem;
    width: 45%;
    padding-right: 10px;
    white-space: nowrap;
    text-align: left;
    font-weight: 600;
    color: var(--color-muted);
    content: attr(data-label);
  }

  /* First cell (usually name) styling */
  td:first-child {
    background: var(--svbc-black);
    color: white;
    font-weight: 600;
    text-align: center;
    padding: 0.75rem;
    border-radius: 8px 8px 0 0;
  }

  td:first-child::before {
    display: none;
  }

  /* Data info */
  .data-info {
    padding: 1rem;
  }

  /* Header adjustments */
  header {
    padding: 0.5rem 1rem;
  }

  header .logo img {
    height: 35px;
  }

  /* Footer */
  footer {
    padding: 1rem;
    font-size: 0.8rem;
  }
}

/* Extra small mobile - 375px and below */
@media (max-width: 375px) {
  main {
    padding: 0.75rem;
  }

  .summary {
    padding: 1rem;
    border-radius: 8px;
  }

  .stat-card {
    padding: 0.75rem;
  }

  .stat-value {
    font-size: 1.5rem;
  }

  td {
    padding: 0.5rem 0.5rem 0.5rem 45%;
  }

  td::before {
    left: 0.5rem;
  }
}

/* Print styles */
@media print {
  header, footer {
    background: white !important;
    color: black !important;
  }

  .summary {
    background: white !important;
    border: 2px solid var(--svbc-black);
  }

  .stat-card {
    box-shadow: none;
    border: 1px solid #ccc;
  }

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

  a::after {
    content: " (" attr(href) ")";
    font-size: 0.8em;
    color: #666;
  }
}