/* ==========================================================================
   Lawrence-Douglas County Public Health — Respiratory Surveillance Dashboard
   Brand-driven, mobile-first stylesheet
   ========================================================================== */

:root {
  /* ---- Core logo colors ---- */
  --brand-orange: #f3711b;
  --brand-slate:  #707a83;
  --brand-sky:    #a0ddfc;
  --brand-blue:   #1776bc;

  /* ---- Extended palette ---- */
  --ext-navy:     #2d4a76;
  --ext-peach:    #ff9d72;
  --ext-maroon:   #642e35;
  --ext-plum:     #544e64;
  --ext-tan:      #a15e26;
  --ext-teal:     #48a69a;
  --ext-gold:     #e7ac08;
  --ext-green:    #80c586;
  --ext-coral:    #e05f4a;
  --ext-brown:    #734842;
  --ext-pink:     #e7738b;
  --ext-olive:    #75782f;
  --ext-purple:   #7e4d7f;
  --ext-berry:    #9c2638;
  --ext-lilac:    #bca6ca;
  --ext-gray:     #575757;
  --ext-yellow:   #d6d259;
  --ext-mauve:    #c976a1;
  --ext-emerald:  #438675;
  --ext-moss:     #919741;

  /* ---- Semantic assignments ---- */
  --color-text:       #26292c;
  --color-text-soft:  var(--ext-gray);
  --color-bg:         #f7f9fa;
  --color-surface:    #ffffff;
  --color-border:     #e2e6e9;
  --color-accent:     var(--brand-orange);
  --color-primary:    var(--brand-blue);
  --color-primary-dk: var(--ext-navy);

  /* Pathogen color coding — used consistently across ED + wastewater charts */
  --covid-strong: var(--brand-orange);
  --covid-soft:   var(--ext-peach);
  --flu-strong:   var(--brand-blue);
  --flu-soft:     var(--brand-sky);
  --rsv-strong:   var(--ext-teal);
  --rsv-soft:     var(--ext-green);

  --radius: 14px;
  --shadow: 0 1px 2px rgba(20, 30, 40, 0.06), 0 4px 16px rgba(20, 30, 40, 0.06);
  --maxw: 1180px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }
a { color: var(--color-primary); }

.container {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 clamp(16px, 4vw, 32px);
}

/* ---------------------------------- Skip link ---------------------------------- */
.skip-link {
  position: absolute;
  left: -999px;
  top: 0;
  background: var(--color-primary);
  color: #fff;
  padding: 10px 16px;
  z-index: 1000;
}
.skip-link:focus { left: 8px; top: 8px; border-radius: 8px; }

/* ---------------------------------- Header / Nav ---------------------------------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--color-surface);
  border-bottom: 3px solid var(--color-accent);
  box-shadow: var(--shadow);
}

.header-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px clamp(16px, 4vw, 32px);
  max-width: var(--maxw);
  margin: 0 auto;
  gap: 12px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  min-width: 0;
  text-decoration: none;
  color: inherit;
}

.brand__logo {
  width: 42px;
  height: 42px;
  flex: none;
  border-radius: 10px;
}

.brand__text { min-width: 0; }
.brand__agency {
  display: block;
  font-weight: 700;
  font-size: 0.98rem;
  color: var(--color-primary-dk);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.brand__tagline {
  display: block;
  font-size: 0.72rem;
  color: var(--color-text-soft);
  white-space: nowrap;
}

.nav-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  border-radius: 10px;
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  cursor: pointer;
}
.nav-toggle span,
.nav-toggle::before,
.nav-toggle::after {
  content: "";
  display: block;
  width: 20px;
  height: 2px;
  background: var(--color-primary-dk);
  border-radius: 2px;
  position: relative;
}
.nav-toggle::before { transform: translateY(-6px); }
.nav-toggle::after  { transform: translateY(4px); }

.main-nav {
  display: none;
  flex-direction: column;
  gap: 2px;
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
}
.main-nav.is-open { display: flex; }

.main-nav a {
  display: block;
  padding: 12px clamp(16px, 4vw, 32px);
  text-decoration: none;
  color: var(--color-text);
  font-weight: 600;
  font-size: 0.92rem;
  border-left: 3px solid transparent;
}
.main-nav a:hover,
.main-nav a:focus {
  background: var(--color-bg);
  border-left-color: var(--color-accent);
  color: var(--color-primary-dk);
}

@media (min-width: 860px) {
  .nav-toggle { display: none; }
  .main-nav {
    display: flex;
    flex-direction: row;
    gap: 4px;
    border-top: none;
    background: none;
  }
  .main-nav a { border-left: none; border-bottom: 3px solid transparent; padding: 10px 14px; }
  .main-nav a:hover, .main-nav a:focus { border-left: none; border-bottom-color: var(--color-accent); background: none; }
}

/* ---------------------------------- Hero ---------------------------------- */
.hero {
  background: linear-gradient(120deg, var(--color-primary-dk) 0%, var(--color-primary) 65%, var(--brand-sky) 150%);
  color: #fff;
  padding: clamp(28px, 6vw, 48px) 0;
}
.hero h1 {
  margin: 0 0 8px;
  font-size: clamp(1.5rem, 3.4vw, 2.1rem);
}
.hero p {
  margin: 0;
  max-width: 62ch;
  color: rgba(255,255,255,0.9);
  font-size: clamp(0.92rem, 1.6vw, 1.02rem);
}
.hero__meta {
  margin-top: 16px;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}
.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(255,255,255,0.16);
  border: 1px solid rgba(255,255,255,0.35);
  color: #fff;
  padding: 6px 12px;
  border-radius: 999px;
  font-size: 0.78rem;
  font-weight: 600;
}
.badge__dot { width: 8px; height: 8px; border-radius: 50%; background: var(--brand-orange); }

/* ---------------------------------- Section framing ---------------------------------- */
.section { padding: clamp(28px, 5vw, 44px) 0; }
.section + .section { border-top: 1px solid var(--color-border); }
.section-title {
  display: flex;
  align-items: baseline;
  gap: 10px;
  margin: 0 0 6px;
  font-size: clamp(1.15rem, 2.4vw, 1.5rem);
  color: var(--color-primary-dk);
}
.section-sub {
  margin: 0 0 22px;
  color: var(--color-text-soft);
  font-size: 0.92rem;
  max-width: 72ch;
}

/* ---------------------------------- Narrative summary ---------------------------------- */
.narrative-box {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-left: 5px solid var(--color-primary);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: clamp(16px, 3vw, 26px) clamp(18px, 3.5vw, 30px);
  font-size: 1rem;
  line-height: 1.7;
  color: var(--color-text);
}
.narrative-box b,
.narrative-box strong { color: var(--color-primary-dk); }
.narrative-box hr {
  border: none;
  border-top: 1px solid var(--color-border);
  margin: 14px 0;
}
.narrative-box p { margin: 0 0 10px; }
.narrative-box p:last-child { margin-bottom: 0; }

/* ---------------------------------- Pathogen cards ---------------------------------- */
.pathogen-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 18px clamp(14px, 3vw, 24px) 22px;
  margin-bottom: 22px;
  scroll-margin-top: 96px;
}
.pathogen-card__head {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 4px;
}
.pathogen-card__dot { width: 14px; height: 14px; border-radius: 4px; background: var(--tone, var(--color-accent)); flex: none; }
.pathogen-card__title { margin: 0; font-size: 1.15rem; color: var(--color-text); }
.pathogen-card__desc { margin: 2px 0 16px; color: var(--color-text-soft); font-size: 0.88rem; }

.chart-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
}
@media (min-width: 900px) {
  .chart-grid { grid-template-columns: 1fr 1fr; }
}

.chart-box h3 {
  margin: 0 0 8px;
  font-size: 0.86rem;
  font-weight: 700;
  color: var(--color-primary-dk);
  text-transform: uppercase;
  letter-spacing: 0.02em;
}
.chart-wrap {
  position: relative;
  height: 260px;
  background: var(--color-bg);
  border-radius: 10px;
  padding: 10px 8px 4px;
}
@media (min-width: 640px) { .chart-wrap { height: 300px; } }

.legend-note { font-size: 0.75rem; color: var(--color-text-soft); margin-top: 6px; }

/* ---------------------------------- About / footer ---------------------------------- */
.about-list { padding-left: 1.1em; color: var(--color-text-soft); font-size: 0.92rem; }
.about-list li { margin-bottom: 8px; }

.site-footer {
  background: var(--color-primary-dk);
  color: rgba(255,255,255,0.85);
  padding: 26px 0;
  font-size: 0.85rem;
}
.site-footer a { color: var(--brand-sky); }
.footer-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  justify-content: space-between;
  align-items: center;
}

/* ---------------------------------- Utility ---------------------------------- */
.visually-hidden {
  position: absolute !important;
  width: 1px; height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}
.state-msg { text-align: center; color: var(--color-text-soft); padding: 24px; font-size: 0.9rem; }