/* ═══════════════════════════════════════════════════════════════
   HazardPulse Design System — Classic Truth Surface
   Zero JS. CSS-only theming, transitions, scroll animations.
   ═══════════════════════════════════════════════════════════════ */

/* ── View Transitions ─────────────────────────────────────────── */
@view-transition { navigation: auto; }

/* ── Design Tokens ────────────────────────────────────────────── */
:root {
  /* Surfaces */
  --bg: #f6f9ff;
  --bg-alt: #eef4ff;
  --bg-glass: rgba(246,249,255,.85);
  --panel: #ffffff;
  --panel-hover: #f0f5ff;
  --text: #1a2744;
  --text-secondary: #3d5078;
  --muted: #556a8a;
  --line: #d4dfef;
  --line-subtle: #e8eef8;
  --focus-ring: #4a7fff;

  /* Primary brand */
  --primary: #2558b8;
  --primary-hover: #1d4a9e;
  --primary-light: rgba(37,88,184,.25);

  /* Hazard accents */
  --eq: #3b7dff;
  --eq-bg: #edf3ff;
  --eq-border: #b8d0ff;
  --hu: #0fa878;
  --hu-bg: #e8faf4;
  --hu-border: #a0e4cc;
  --to: #c98a12;
  --to-bg: #fff8e8;
  --to-border: #eed6a0;

  /* Status */
  --good: #0f7844;
  --good-bg: #e4f8ee;
  --good-border: #a8dfc0;
  --warn: #8a5e06;
  --warn-bg: #fef6e0;
  --warn-border: #e2cc88;
  --bad: #b52b2b;
  --bad-bg: #fde8e8;
  --bad-border: #e8a8a8;

  /* Spacing scale */
  --s-xs: 4px;
  --s-sm: 8px;
  --s-md: 16px;
  --s-lg: 24px;
  --s-xl: 32px;
  --s-2xl: 48px;
  --s-3xl: 64px;

  /* Fluid typography */
  --text-xs: clamp(11px, 0.7rem + 0.1vw, 12px);
  --text-sm: clamp(12px, 0.75rem + 0.15vw, 13px);
  --text-base: clamp(14px, 0.85rem + 0.2vw, 15px);
  --text-lg: clamp(16px, 1rem + 0.25vw, 18px);
  --text-xl: clamp(20px, 1.2rem + 0.4vw, 24px);
  --text-2xl: clamp(24px, 1.4rem + 0.6vw, 30px);
  --text-hero: clamp(28px, 2rem + 1.5vw, 44px);

  /* Radii */
  --radius: 12px;
  --radius-sm: 8px;
  --radius-pill: 999px;

  /* Shadows */
  --shadow-card: 0 1px 3px rgba(26,39,68,.06), 0 1px 2px rgba(26,39,68,.04);
  --shadow-card-hover: 0 4px 12px rgba(26,39,68,.1);
  --shadow-elevated: 0 8px 24px rgba(26,39,68,.12);

  /* Motion */
  --ease: cubic-bezier(.4,0,.2,1);
  --ease-spring: cubic-bezier(.34,1.56,.64,1);
  --dur: 180ms;
  --dur-slow: 400ms;

  /* Font stack */
  --font: Inter, "Segoe UI", system-ui, -apple-system, sans-serif;
  --font-mono: "JetBrains Mono", "Cascadia Code", "Fira Code", monospace;
}

/* ── Dark theme ───────────────────────────────────────────────── */
body:has(.theme-toggle:checked) {
  --bg: #080c16;
  --bg-alt: #0e1528;
  --bg-glass: rgba(8,12,22,.88);
  --panel: #111a2e;
  --panel-hover: #182540;
  --text: #e4eaf6;
  --text-secondary: #b0bdd8;
  --muted: #9aadcc;
  --line: #243050;
  --line-subtle: #1c2844;
  --focus-ring: #6ea0ff;

  --primary: #6ea0ff;
  --primary-hover: #8ab8ff;
  --primary-light: rgba(110,160,255,.25);

  --eq-bg: #131c35;
  --eq-border: #2a4580;
  --hu-bg: #0e1f22;
  --hu-border: #1a4a42;
  --to-bg: #1c1808;
  --to-border: #4a3d1a;

  --good: #4ce8a0;
  --good-bg: #0e2018;
  --good-border: #1a4a30;
  --warn: #ffd26f;
  --warn-bg: #1c1808;
  --warn-border: #4a3d1a;
  --bad: #ff8080;
  --bad-bg: #200e0e;
  --bad-border: #4a1a1a;

  --shadow-card: 0 1px 3px rgba(0,0,0,.3);
  --shadow-card-hover: 0 4px 16px rgba(0,0,0,.4);
  --shadow-elevated: 0 8px 32px rgba(0,0,0,.5);
}

body:has(.theme-toggle:checked) a { color: #8ab8ff; }
body:has(.theme-toggle:checked) code { background: #0a1120; }
body:has(.theme-toggle:checked) .topbar { background: var(--bg-glass); }

/* ── Reset ────────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  font-size: var(--text-base);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

:focus-visible {
  outline: 2px solid var(--focus-ring);
  outline-offset: 3px;
}

/* ── Reduced motion ───────────────────────────────────────────── */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
  html { scroll-behavior: auto; }
  .section {
    animation: none !important;
    animation-timeline: auto !important;
  }
}

/* ── Skip link ────────────────────────────────────────────────── */
.skip-link {
  position: absolute;
  top: -100px;
  left: var(--s-md);
  background: var(--focus-ring);
  color: #fff;
  padding: var(--s-sm) var(--s-md);
  border-radius: var(--radius-sm);
  z-index: 1000;
  font-weight: 600;
  font-size: var(--text-sm);
  transition: top var(--dur) var(--ease);
}
.skip-link:focus { top: 12px; }

/* ── Layout ───────────────────────────────────────────────────── */
.container {
  width: min(1200px, 92vw);
  margin: 0 auto;
}

/* ── Topbar (glassmorphism) ───────────────────────────────────── */
.topbar {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--bg-glass);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  contain: layout style;
}

.topbar-inner {
  display: flex;
  align-items: center;
  gap: var(--s-md);
  padding: 14px 0;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 16px;
  letter-spacing: 0.2px;
  color: var(--text);
  text-decoration: none;
  white-space: nowrap;
  view-transition-name: logo;
}
.brand:hover { text-decoration: none; }

.brand-logo {
  width: 30px;
  height: 30px;
  border-radius: var(--radius-sm);
  object-fit: contain;
}

.brand small {
  color: var(--muted);
  font-weight: 400;
  font-size: var(--text-sm);
}

nav.nav {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  margin-left: auto;
}

nav.nav a {
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-weight: 500;
  color: var(--text-secondary);
  transition: background var(--dur) var(--ease), color var(--dur) var(--ease);
}
nav.nav a:hover,
nav.nav a[aria-current] {
  background: var(--bg-alt);
  color: var(--text);
  text-decoration: none;
}

.theme-switch {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-left: var(--s-sm);
  flex-shrink: 0;
}
.theme-toggle {
  width: 16px;
  height: 16px;
  accent-color: var(--focus-ring);
}
.theme-switch label {
  font-size: var(--text-xs);
  color: var(--muted);
  cursor: pointer;
  white-space: nowrap;
}

/* ── Hero ─────────────────────────────────────────────────────── */
.hero {
  padding: var(--s-3xl) 0 var(--s-xl);
  view-transition-name: hero-title;
}

.eyebrow {
  color: var(--primary);
  text-transform: uppercase;
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 1.8px;
  margin-bottom: var(--s-sm);
}

h1 {
  margin: 0 0 14px;
  font-size: var(--text-hero);
  font-weight: 800;
  line-height: 1.12;
  letter-spacing: -0.02em;
  color: var(--text);
}
h2 {
  margin: 0 0 12px;
  font-size: var(--text-xl);
  font-weight: 700;
  line-height: 1.2;
}
h3 {
  margin: 0 0 var(--s-sm);
  font-size: var(--text-lg);
  font-weight: 600;
}

.subtitle {
  color: var(--text-secondary);
  max-width: 740px;
  line-height: 1.6;
  font-size: var(--text-lg);
}

/* ── Grid ─────────────────────────────────────────────────────── */
.grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: var(--s-md);
}
.grid + .grid { margin-top: var(--s-md); }

.section {
  padding: var(--s-2xl) 0 var(--s-xl);
}
.section + .section {
  border-top: 1px solid var(--line-subtle);
}

/* ── Cards ────────────────────────────────────────────────────── */
.card {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: var(--s-lg);
  box-shadow: var(--shadow-card);
  transition: box-shadow var(--dur) var(--ease), transform var(--dur) var(--ease);
  contain: layout style paint;
}
.card:hover {
  box-shadow: var(--shadow-card-hover);
  transform: translateY(-1px);
}

/* ── Card links (clickable cards) ─────────────────────────────── */
.card-link {
  display: block;
  color: var(--text);
  text-decoration: none;
  cursor: pointer;
  border: 1px solid transparent;
  border-radius: var(--radius);
  transition: border-color var(--dur) var(--ease), box-shadow var(--dur) var(--ease), transform var(--dur) var(--ease);
}
.card-link:hover {
  text-decoration: none;
  border-color: var(--focus-ring);
  box-shadow: var(--shadow-elevated);
  transform: translateY(-2px);
}
.card-link:hover .card-cta {
  color: var(--focus-ring);
}

.card-cta {
  display: block;
  margin-top: 14px;
  font-size: 14px;
  font-weight: 600;
  color: var(--primary);
  transition: color var(--dur) var(--ease);
}

/* ── Animations ───────────────────────────────────────────────── */
@keyframes fade-up {
  from { opacity: 0; transform: translateY(20px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes card-reveal {
  from { opacity: 0; transform: translateY(12px) scale(.98); }
  to   { opacity: 1; transform: translateY(0) scale(1); }
}

.hero {
  animation: fade-up var(--dur-slow) var(--ease) both;
}

.card {
  animation: card-reveal var(--dur-slow) var(--ease) both;
}

/* Scroll-driven animations (progressive enhancement) */
@supports (animation-timeline: view()) {
  .section {
    animation: fade-up linear both;
    animation-timeline: view();
    animation-range: entry 0% entry 30%;
  }
}

/* ── View transition customization ────────────────────────────── */
::view-transition-old(root) {
  animation: 200ms var(--ease) both fade-out;
}
::view-transition-new(root) {
  animation: 200ms var(--ease) both fade-in;
}
@keyframes fade-out { to { opacity: 0; } }
@keyframes fade-in  { from { opacity: 0; } }

::view-transition-old(logo),
::view-transition-new(logo) {
  animation-duration: 250ms;
}

/* ── Metrics ──────────────────────────────────────────────────── */
.metric {
  font-size: var(--text-2xl);
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.1;
}
.metric-label {
  font-size: var(--text-sm);
  color: var(--muted);
  margin-top: var(--s-xs);
}
.muted { color: var(--muted); }

/* ── Chips ────────────────────────────────────────────────────── */
.chip {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  border-radius: var(--radius-pill);
  padding: 3px 10px;
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.02em;
}
.chip.good    { background: var(--good-bg); border: 1px solid var(--good-border); color: var(--good); }
.chip.warn    { background: var(--warn-bg); border: 1px solid var(--warn-border); color: var(--warn); }
.chip.bad     { background: var(--bad-bg);  border: 1px solid var(--bad-border);  color: var(--bad);  }
.chip.neutral { background: var(--bg-alt);  border: 1px solid var(--line);        color: var(--muted); }

.chip-row {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 12px;
}

/* ── Grid columns ─────────────────────────────────────────────── */
.col-12 { grid-column: span 12; }
.col-8  { grid-column: span 8; }
.col-6  { grid-column: span 6; }
.col-4  { grid-column: span 4; }
.col-3  { grid-column: span 3; }

/* ── Hazard accents ───────────────────────────────────────────── */
.hazard-eq { border-left: 3px solid var(--eq); }
.hazard-hu { border-left: 3px solid var(--hu); }
.hazard-to { border-left: 3px solid var(--to); }

/* ── Key-value rows ───────────────────────────────────────────── */
.kv {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 12px;
  padding: 6px 0;
  font-size: 14px;
  border-bottom: 1px solid var(--line-subtle);
}
.kv:last-child { border-bottom: none; }
.kv span { color: var(--muted); }
.kv strong { font-weight: 600; text-align: right; }

/* ── Buttons ──────────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 10px 20px;
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-weight: 600;
  text-decoration: none;
  transition: background var(--dur) var(--ease), color var(--dur) var(--ease), box-shadow var(--dur) var(--ease), transform var(--dur) var(--ease);
}
.btn:hover { text-decoration: none; transform: translateY(-1px); }
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-hover); box-shadow: 0 2px 8px var(--primary-light); }
.btn-secondary { background: var(--bg-alt); color: var(--text); border: 1px solid var(--line); }
.btn-secondary:hover { background: var(--panel-hover); }

.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: var(--s-lg);
}

/* ── Equation block ───────────────────────────────────────────── */
.equation-block {
  background: var(--bg-alt);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: var(--s-lg) var(--s-xl);
  font-size: var(--text-lg);
  font-weight: 600;
  font-family: var(--font-mono);
  text-align: center;
  letter-spacing: 0.02em;
  margin: var(--s-md) 0;
}

/* ── Tables ───────────────────────────────────────────────────── */
table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}
th, td {
  border-bottom: 1px solid var(--line-subtle);
  text-align: left;
  padding: 10px 8px;
}
th {
  color: var(--primary);
  font-weight: 600;
  font-size: var(--text-xs);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

/* ── Code ─────────────────────────────────────────────────────── */
code {
  background: var(--bg-alt);
  border: 1px solid var(--line);
  padding: 1px 6px;
  border-radius: 6px;
  font-size: var(--text-sm);
  font-family: var(--font-mono);
}

/* ── Lists ────────────────────────────────────────────────────── */
ul { padding-left: 20px; }
li { margin-bottom: 6px; }

/* ── Ledger entry ─────────────────────────────────────────────── */
.ledger-entry {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 14px 18px;
  margin-bottom: 10px;
  transition: box-shadow var(--dur) var(--ease);
}
.ledger-entry:hover {
  box-shadow: var(--shadow-card-hover);
}

/* ── Section head ─────────────────────────────────────────────── */
.section-head {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: var(--s-md);
  margin-bottom: var(--s-lg);
}

/* ── Data source card ─────────────────────────────────────────── */
.data-source {
  background: var(--bg-alt);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  padding: 12px 16px;
  margin-bottom: var(--s-sm);
  transition: box-shadow var(--dur) var(--ease);
}
.data-source:hover { box-shadow: var(--shadow-card); }
.data-source strong { display: block; margin-bottom: 2px; }
.data-source .muted { font-size: var(--text-sm); }

/* ── Footer ───────────────────────────────────────────────────── */
.footer {
  border-top: 1px solid var(--line);
  margin-top: var(--s-2xl);
  padding: var(--s-xl) 0 var(--s-2xl);
}

.footer-inner {
  display: flex;
  flex-wrap: wrap;
  gap: var(--s-xl);
  justify-content: space-between;
}

.footer-col h4 {
  margin: 0 0 var(--s-sm);
  font-size: var(--text-xs);
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--muted);
}
.footer-col a {
  display: block;
  font-size: 14px;
  color: var(--text-secondary);
  padding: 3px 0;
}

.footer-disclaimer {
  width: 100%;
  margin-top: var(--s-lg);
  padding-top: var(--s-lg);
  border-top: 1px solid var(--line-subtle);
  font-size: var(--text-sm);
  color: var(--muted);
  line-height: 1.5;
}

.footer-build {
  width: 100%;
  margin-top: var(--s-sm);
  font-size: var(--text-xs);
  color: var(--muted);
  letter-spacing: 0.5px;
}

/* ── Depth Toggle (Simple / Technical) ────────────────────────── */
.depth-content {
  position: relative;
}

.depth-toggle {
  display: inline-flex;
  align-items: center;
  gap: 0;
  background: var(--bg-alt);
  border: 1px solid var(--line);
  border-radius: var(--radius-pill);
  padding: 3px;
  margin-bottom: var(--s-lg);
}

.depth-toggle input[type="radio"] {
  position: absolute;
  opacity: 0;
  width: 0;
  height: 0;
  pointer-events: none;
}

.depth-toggle label {
  padding: 6px 18px;
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--muted);
  border-radius: var(--radius-pill);
  cursor: pointer;
  transition: background var(--dur) var(--ease), color var(--dur) var(--ease);
  white-space: nowrap;
  user-select: none;
}

.depth-toggle label:hover {
  color: var(--text);
}

.depth-toggle input[type="radio"]:checked + label {
  background: var(--primary);
  color: #fff;
  box-shadow: 0 1px 4px var(--primary-light);
}

.depth-toggle input[type="radio"]:focus-visible + label {
  outline: 2px solid var(--focus-ring);
  outline-offset: 2px;
}

.depth-content [data-depth="simple"],
.depth-content [data-depth="technical"] {
  max-height: 0;
  overflow: hidden;
  opacity: 0;
  transition: max-height 0.4s var(--ease), opacity 0.3s var(--ease), margin 0.3s var(--ease);
  margin: 0;
}

.depth-content:has(#depth-simple:checked) [data-depth="simple"],
.depth-content:not(:has(input[type="radio"]:checked)) [data-depth="simple"] {
  max-height: 8000px;
  opacity: 1;
  margin-bottom: var(--s-md);
}

.depth-content:has(#depth-technical:checked) [data-depth="technical"] {
  max-height: 8000px;
  opacity: 1;
  margin-bottom: var(--s-md);
}

/* ── Nav Dropdown ─────────────────────────────────────────────── */
.nav-dropdown {
  position: relative;
}

.nav-dropdown > a::after {
  content: " ▾";
  font-size: 10px;
  opacity: .5;
}

.nav-dropdown-menu {
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%);
  min-width: 180px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow-elevated);
  padding: var(--s-sm) 0;
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--dur) var(--ease), visibility var(--dur) var(--ease);
  z-index: 200;
  margin-top: 4px;
}

.nav-dropdown:hover .nav-dropdown-menu,
.nav-dropdown:focus-within .nav-dropdown-menu {
  opacity: 1;
  visibility: visible;
}

.nav-dropdown-menu a {
  display: flex;
  align-items: center;
  gap: var(--s-sm);
  padding: 8px 16px;
  font-size: 14px;
  font-weight: 500;
  color: var(--text-secondary);
  transition: background var(--dur) var(--ease), color var(--dur) var(--ease);
}

.nav-dropdown-menu a:hover {
  background: var(--bg-alt);
  color: var(--text);
  text-decoration: none;
}

.nav-dropdown-menu .hazard-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  flex-shrink: 0;
}

.nav-dropdown-menu .hazard-dot.eq { background: var(--eq); }
.nav-dropdown-menu .hazard-dot.hu { background: var(--hu); }
.nav-dropdown-menu .hazard-dot.to { background: var(--to); }

/* ── Mobile Hamburger ─────────────────────────────────────────── */
.nav-hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 8px;
  margin-left: auto;
}

.nav-hamburger-bar {
  width: 22px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: transform var(--dur) var(--ease), opacity var(--dur) var(--ease);
}

.nav-hamburger-input {
  position: absolute;
  opacity: 0;
  width: 0;
  height: 0;
}

.nav-hamburger-input:focus-visible ~ .nav-hamburger {
  outline: 2px solid var(--focus-ring);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}

.nav-hamburger-input:checked ~ .nav-hamburger .nav-hamburger-bar:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.nav-hamburger-input:checked ~ .nav-hamburger .nav-hamburger-bar:nth-child(2) {
  opacity: 0;
}
.nav-hamburger-input:checked ~ .nav-hamburger .nav-hamburger-bar:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ── Card Hero / Secondary ────────────────────────────────────── */
.card-hero {
  grid-column: span 12;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--s-lg);
  padding: var(--s-xl);
}

.card-hero .metric {
  font-size: clamp(36px, 5vw, 52px);
}

.card-hero .card-hero-info {
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.card-hero .card-hero-map {
  display: flex;
  align-items: center;
  justify-content: center;
}

.card-secondary {
  grid-column: span 6;
}

.rank-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--bg-alt);
  border: 1px solid var(--line);
  font-size: var(--text-xs);
  font-weight: 700;
  color: var(--muted);
  flex-shrink: 0;
}

.rank-badge.rank-1 { background: var(--primary); color: #fff; border-color: var(--primary); }

/* ── SVG Maps ─────────────────────────────────────────────────── */
.hazard-map {
  width: 100%;
  max-width: 600px;
  height: auto;
  border-radius: var(--radius);
}

.hazard-map .state {
  fill: var(--bg-alt);
  stroke: var(--line);
  stroke-width: 0.5;
  transition: fill var(--dur) var(--ease);
}

.hazard-map .state:hover {
  fill: var(--panel-hover);
}

.hazard-map .zone-eq {
  fill: var(--eq-bg);
  stroke: var(--eq);
  stroke-width: 1;
}
.hazard-map .zone-eq:hover { fill: var(--eq-border); }

.hazard-map .zone-hu {
  fill: var(--hu-bg);
  stroke: var(--hu);
  stroke-width: 1;
}
.hazard-map .zone-hu:hover { fill: var(--hu-border); }

.hazard-map .zone-to {
  fill: var(--to-bg);
  stroke: var(--to);
  stroke-width: 1;
}
.hazard-map .zone-to:hover { fill: var(--to-border); }

.hazard-map .storm-track {
  fill: none;
  stroke: var(--hu);
  stroke-width: 2;
  stroke-dasharray: 6 3;
}

.hazard-map .storm-marker {
  fill: var(--hu);
  stroke: #fff;
  stroke-width: 1.5;
}

.hazard-map .storm-marker-pulse {
  fill: var(--hu);
  opacity: .3;
  animation: map-pulse 2s ease-in-out infinite;
}

@keyframes map-pulse {
  0%, 100% { r: 8; opacity: .3; }
  50% { r: 14; opacity: 0; }
}

.hazard-map .zone-label {
  font-size: 9px;
  font-weight: 600;
  fill: var(--text-secondary);
  pointer-events: none;
}

.hazard-map .event-marker {
  cursor: pointer;
  transition: transform var(--dur) var(--ease);
}

.hazard-map .event-marker:hover {
  transform: scale(1.4);
}

/* Map-table :target interaction */
.event-row:target {
  background: var(--bg-alt);
  outline: 2px solid var(--focus-ring);
  outline-offset: -2px;
  border-radius: var(--radius-sm);
}

.event-row:target + .event-detail {
  max-height: 600px;
  opacity: 1;
  padding: var(--s-md);
  margin-bottom: var(--s-sm);
}

.event-detail {
  max-height: 0;
  overflow: hidden;
  opacity: 0;
  transition: max-height 0.3s var(--ease), opacity 0.3s var(--ease), padding 0.3s var(--ease);
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

/* ── Top 10 Table ─────────────────────────────────────────────── */
.ranked-table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0 4px;
}

.ranked-table th {
  padding: 8px 10px;
  font-size: var(--text-xs);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--muted);
  font-weight: 600;
  text-align: left;
  border: none;
}

.ranked-table td {
  padding: 10px;
  border: none;
  background: var(--panel);
  font-size: 14px;
}

.ranked-table tr td:first-child {
  border-radius: var(--radius-sm) 0 0 var(--radius-sm);
}

.ranked-table tr td:last-child {
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}

.ranked-table tbody tr {
  cursor: pointer;
  transition: box-shadow var(--dur) var(--ease);
}

.ranked-table tbody tr:hover td {
  background: var(--panel-hover);
}

.trend-up { color: var(--bad); }
.trend-down { color: var(--good); }
.trend-flat { color: var(--muted); }

/* ── Responsive ───────────────────────────────────────────────── */
@media (max-width: 920px) {
  .col-8, .col-6, .col-4, .col-3 { grid-column: span 12; }
  .card-hero { grid-column: span 12; grid-template-columns: 1fr; }
  .card-secondary { grid-column: span 12; }
  .topbar-inner { flex-wrap: wrap; }
  .footer-inner { flex-direction: column; gap: var(--s-lg); }
  .section-head { flex-direction: column; align-items: flex-start; }

  .nav-hamburger { display: flex; }
  .topbar nav:not(.nav-hamburger) { display: none; }
  .nav-hamburger-input:checked ~ nav {
    display: flex !important;
    flex-direction: column;
    width: 100%;
    background: var(--panel);
    border-top: 1px solid var(--line);
    padding: var(--s-md);
    gap: var(--s-md);
  }
  .nav-hamburger-input:checked ~ nav .nav-dropdown-menu {
    position: static;
    transform: none;
    box-shadow: none;
    border: none;
    padding: 0 0 0 var(--s-md);
    opacity: 1;
    visibility: visible;
    margin-top: var(--s-sm);
  }
}

@media (max-width: 600px) {
  .grid { gap: var(--s-sm); }
  .card { padding: var(--s-md); }
  .card-hero { padding: var(--s-md); }
  .hero { padding: var(--s-xl) 0 var(--s-md); }
  .ranked-table { font-size: 13px; }
  .ranked-table th, .ranked-table td { padding: 6px; }
}

.table-scroll {
  width: 100%;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

/* ═══════════════════════════════════════════════════════════════
   EMERGENCY ALERT SYSTEM
   Triggered by data-alert attribute on <body> injected by Worker.
   Levels: critical > severe > warning > watch > none
   ═══════════════════════════════════════════════════════════════ */

/* -- Emergency Banner (hidden by default) -- */
.emergency-banner {
  display: none;
  background: linear-gradient(135deg, #dc2626 0%, #991b1b 100%);
  color: #fff;
  padding: var(--s-lg) var(--s-xl);
  position: relative;
  overflow: hidden;
  z-index: 90;
}

.emergency-banner .emergency-pulse {
  position: absolute;
  inset: 0;
  background: rgba(255,255,255,.06);
  animation: emergency-flash 2s ease-in-out infinite;
  pointer-events: none;
}

@keyframes emergency-flash {
  0%, 100% { opacity: 0; }
  50% { opacity: 1; }
}

.emergency-banner .emergency-body {
  position: relative;
  max-width: 1200px;
  margin: 0 auto;
}

.emergency-banner .emergency-title {
  margin: 0 0 var(--s-sm);
  font-size: var(--text-xl);
  font-weight: 800;
  color: #fff;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.emergency-banner .emergency-location {
  font-size: var(--text-sm);
  opacity: .85;
  margin: 0 0 var(--s-sm);
}

.emergency-banner .emergency-detail {
  font-size: var(--text-base);
  line-height: 1.6;
  margin: 0 0 var(--s-sm);
}

.emergency-banner .emergency-action {
  font-size: var(--text-base);
  font-weight: 700;
  margin: 0 0 var(--s-sm);
}

.emergency-banner .emergency-links {
  font-size: var(--text-sm);
}
.emergency-banner .emergency-links a {
  color: #fca5a5;
  font-weight: 600;
  text-decoration: underline;
}

/* -- CRITICAL: Full danger mode -- */
body[data-alert="critical"] {
  --alert-color: #dc2626;
  --alert-bg: #fef2f2;
  --alert-border: #fca5a5;
}

body[data-alert="critical"]::before {
  content: "";
  position: fixed;
  inset: 0;
  border: 4px solid #dc2626;
  pointer-events: none;
  z-index: 9999;
  animation: border-pulse 1.5s ease-in-out infinite;
  border-radius: 0;
}

@keyframes border-pulse {
  0%, 100% { border-color: #dc2626; box-shadow: inset 0 0 20px rgba(220,38,38,.15); }
  50% { border-color: #ef4444; box-shadow: inset 0 0 40px rgba(220,38,38,.25); }
}

body[data-alert="critical"] .emergency-banner {
  display: block;
}

body[data-alert="critical"] .topbar {
  background: linear-gradient(180deg, rgba(220,38,38,.12) 0%, var(--bg-glass) 100%);
  border-bottom-color: #fca5a5;
}

body[data-alert="critical"] .brand::after {
  content: "⚠ ALERT";
  margin-left: var(--s-sm);
  font-size: var(--text-xs);
  font-weight: 800;
  color: #dc2626;
  background: #fef2f2;
  padding: 2px 8px;
  border-radius: var(--radius-pill);
  animation: alert-blink 1s step-end infinite;
}

@keyframes alert-blink {
  0%, 100% { opacity: 1; }
  50% { opacity: .3; }
}

body[data-alert="critical"] main {
  position: relative;
}

body[data-alert="critical"] main::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 200px;
  background: linear-gradient(180deg, rgba(220,38,38,.06) 0%, transparent 100%);
  pointer-events: none;
}

/* -- SEVERE: Orange accent mode -- */
body[data-alert="severe"] {
  --alert-color: #ea580c;
  --alert-bg: #fff7ed;
  --alert-border: #fdba74;
}

body[data-alert="severe"] .emergency-banner {
  display: block;
  background: linear-gradient(135deg, #ea580c 0%, #c2410c 100%);
}

body[data-alert="severe"] .topbar {
  border-bottom: 2px solid #ea580c;
}

body[data-alert="severe"] .brand::after {
  content: "⚠ NEARBY HAZARD";
  margin-left: var(--s-sm);
  font-size: var(--text-xs);
  font-weight: 700;
  color: #ea580c;
  background: #fff7ed;
  padding: 2px 8px;
  border-radius: var(--radius-pill);
}

body[data-alert="warning"] .brand::after {
  content: "⚠ ADVISORY";
  margin-left: var(--s-sm);
  font-size: var(--text-xs);
  font-weight: 700;
  color: #d97706;
  background: #fffbeb;
  padding: 2px 8px;
  border-radius: var(--radius-pill);
}

/* -- WARNING: Subtle accent only, NO banner -- */
body[data-alert="warning"] {
  --alert-color: #d97706;
  --alert-bg: #fffbeb;
  --alert-border: #fcd34d;
}

body[data-alert="warning"] .emergency-banner {
  display: none;
}

/* -- WATCH: Subtle blue info line -- */
body[data-alert="watch"] {
  --alert-color: #2563eb;
  --alert-bg: #eff6ff;
  --alert-border: #93c5fd;
}

/* -- NONE: Normal -- */
body[data-alert="watch"] .emergency-banner,
body[data-alert="none"] .emergency-banner,
body:not([data-alert]) .emergency-banner {
  display: none;
}

/* Dark theme alert overrides */
body:has(.theme-toggle:checked)[data-alert="critical"]::before {
  border-color: #ef4444;
  box-shadow: inset 0 0 30px rgba(239,68,68,.2);
}

body:has(.theme-toggle:checked)[data-alert="critical"] .topbar {
  background: linear-gradient(180deg, rgba(239,68,68,.15) 0%, var(--bg-glass) 100%);
}

body:has(.theme-toggle:checked)[data-alert="critical"] .your-area-section .card {
  background: #200e0e;
  border-color: #4a1a1a;
}
body:has(.theme-toggle:checked)[data-alert="severe"] .your-area-section .card {
  background: #201508;
  border-color: #4a3010;
}
body:has(.theme-toggle:checked)[data-alert="warning"] .your-area-section .card {
  background: #1c1808;
  border-color: #4a3d1a;
}

body:has(.theme-toggle:checked)[data-alert="severe"] .topbar {
  background: linear-gradient(180deg, rgba(234,88,12,.12) 0%, var(--bg-glass) 100%);
  border-bottom-color: #ea580c;
}
body:has(.theme-toggle:checked)[data-alert="warning"] .topbar {
  border-bottom-color: #d97706;
}

/* ═══════════════════════════════════════════════════════════════
   WORLD MAP SVG SYSTEM
   Equirectangular projection, 960x480 viewBox.
   CSS custom properties --user-x/--user-y set by Worker.
   ═══════════════════════════════════════════════════════════════ */

.world-map-wrapper {
  width: 100%;
  position: relative;
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--bg-alt);
  border: 1px solid var(--line);
  box-shadow: var(--shadow-card);
  transition: box-shadow var(--dur-slow) var(--ease);
}

.world-map-wrapper:hover {
  box-shadow: var(--shadow-elevated);
}

.world-map {
  width: 100%;
  height: auto;
  display: block;
}

/* Oceans and background */
.world-map .ocean {
  fill: #e8f0fe;
  transition: fill var(--dur) var(--ease);
}
body:has(.theme-toggle:checked) .world-map .ocean { fill: #0a1628; }

/* Grid lines (equator, tropics, meridians) */
.world-map .grid-line {
  stroke: var(--line-subtle);
  stroke-width: 0.3;
  fill: none;
  opacity: .4;
}

.world-map .grid-label {
  font-size: 6px;
  fill: var(--muted);
  opacity: .5;
  pointer-events: none;
}

/* Continents / countries */
.world-map .land {
  fill: #dce6f2;
  stroke: var(--line);
  stroke-width: 0.4;
  transition: fill var(--dur) var(--ease), stroke var(--dur) var(--ease);
}
body:has(.theme-toggle:checked) .world-map .land { fill: #162038; stroke: #243050; }

.world-map .land:hover {
  fill: var(--panel-hover);
  stroke: var(--muted);
}

.world-map .country-label {
  font-size: 7px;
  font-weight: 600;
  fill: var(--text-secondary);
  pointer-events: none;
  text-anchor: middle;
}

/* Tectonic plate boundaries */
.world-map .tectonic-line {
  fill: none;
  stroke: var(--eq);
  stroke-width: 1;
  stroke-dasharray: 4 2;
  opacity: .5;
}

/* Hurricane basins */
.world-map .basin-outline {
  fill: none;
  stroke: var(--hu);
  stroke-width: 0.8;
  stroke-dasharray: 8 4;
  opacity: .3;
}

/* Tornado alleys */
.world-map .tornado-region {
  fill: var(--to-bg);
  stroke: var(--to);
  stroke-width: 0.6;
  stroke-dasharray: 3 2;
  opacity: .5;
}

/* Hazard markers — hover on <a> parent to prevent jitter */
.world-map .hazard-markers a {
  cursor: pointer;
}
.world-map .hz-marker {
  transition: r 0.2s var(--ease), stroke-width 0.2s var(--ease);
}
.world-map .hazard-markers a:hover .hz-marker,
.world-map .hazard-markers a:focus .hz-marker {
  r: 9;
  stroke-width: 2;
}

.world-map .hz-marker-eq {
  fill: var(--eq);
  stroke: #fff;
  stroke-width: 1;
}
.world-map .hz-marker-hu {
  fill: var(--hu);
  stroke: #fff;
  stroke-width: 1;
}
.world-map .hz-marker-to {
  fill: var(--to);
  stroke: #fff;
  stroke-width: 1;
}

/* Animated pulse rings around active markers */
.world-map .hz-pulse {
  fill: none;
  stroke-width: 1.5;
  opacity: 0;
  pointer-events: none;
  animation: hz-ring-pulse 2.5s ease-out infinite;
}
/* Invisible hit area for stable hover */
.world-map .hz-hit {
  pointer-events: all;
  cursor: pointer;
}
.world-map .hz-pulse-eq { stroke: var(--eq); }
.world-map .hz-pulse-hu { stroke: var(--hu); }
.world-map .hz-pulse-to { stroke: var(--to); }

@keyframes hz-ring-pulse {
  0% { r: 4; opacity: .6; stroke-width: 2; }
  100% { r: 18; opacity: 0; stroke-width: 0.5; }
}

/* Stagger pulse animations */
.world-map .hz-pulse-delay-1 { animation-delay: 0s; }
.world-map .hz-pulse-delay-2 { animation-delay: 0.8s; }
.world-map .hz-pulse-delay-3 { animation-delay: 1.6s; }

/* Storm tracks (projected paths) */
.world-map .storm-track-line {
  fill: none;
  stroke: var(--hu);
  stroke-width: 1.5;
  stroke-dasharray: 6 3;
  opacity: .6;
}
.world-map .storm-cone {
  fill: var(--hu-bg);
  stroke: var(--hu);
  stroke-width: 0.5;
  opacity: .3;
}

/* User location marker (positioned by CSS custom properties from Worker) */
.world-map .user-marker {
  transform: translate(var(--user-x, 480px), var(--user-y, 240px));
  transition: transform 0.5s var(--ease-spring);
}

.world-map .user-pin {
  fill: #dc2626;
  stroke: #fff;
  stroke-width: 1.5;
  filter: drop-shadow(0 2px 4px rgba(0,0,0,.3));
}

.world-map .user-ring {
  fill: none;
  stroke: #dc2626;
  stroke-width: 1;
  opacity: .3;
  animation: user-ring-expand 3s ease-out infinite;
}

@keyframes user-ring-expand {
  0% { r: 6; opacity: .5; }
  100% { r: 30; opacity: 0; }
}

/* CSS hover tooltip for map regions */
.world-map .map-tooltip {
  pointer-events: none;
  opacity: 0;
  transition: opacity var(--dur) var(--ease);
}

.world-map .hazard-markers a:hover .map-tooltip,
.world-map .hazard-markers a:focus .map-tooltip {
  opacity: 1;
}

.world-map .tooltip-bg {
  fill: var(--panel);
  stroke: var(--line);
  stroke-width: 0.5;
  rx: 4;
  filter: drop-shadow(0 2px 6px rgba(0,0,0,.15));
}

.world-map .tooltip-text {
  font-size: 7px;
  fill: var(--text);
  font-weight: 600;
}
.world-map .tooltip-sub {
  font-size: 6px;
  fill: var(--muted);
}

/* SVG defs: filters and gradients */
.world-map .glow-eq { flood-color: var(--eq); }
.world-map .glow-hu { flood-color: var(--hu); }
.world-map .glow-to { flood-color: var(--to); }

/* Storm detail pannable map */
.storm-map-pan {
  overflow: auto;
  max-height: 480px;
  -webkit-overflow-scrolling: touch;
  scroll-behavior: smooth;
}
.storm-map-pan .world-map {
  width: 200%;
  min-width: 800px;
}
/* Spaghetti model track styles */
.world-map .spaghetti-track {
  fill: none;
  stroke-linecap: round;
  stroke-linejoin: round;
}
.world-map .spaghetti-ofcl { stroke: var(--hu); stroke-width: 2.5; opacity: 0.9; }
.world-map .spaghetti-warm { stroke: #d45050; stroke-width: 1.2; opacity: 0.5; }
.world-map .spaghetti-mid  { stroke: var(--eq); stroke-width: 1; opacity: 0.4; }
.world-map .spaghetti-stat { stroke: var(--muted); stroke-width: 0.8; opacity: 0.3; }
.world-map .spaghetti-cone {
  fill: var(--hu);
  stroke: var(--hu);
  stroke-width: 0.5;
  stroke-dasharray: 4 3;
  opacity: 0.06;
}
.world-map .spaghetti-cone-edge {
  fill: none;
  stroke: var(--hu);
  stroke-width: 0.5;
  stroke-dasharray: 4 3;
  opacity: 0.2;
}
.world-map .track-marker { fill: var(--hu); }
.world-map .track-marker-ofcl { fill: var(--text); }
.world-map .track-label {
  font-size: 5px;
  fill: var(--muted);
  pointer-events: none;
}

/* Map legend */
.map-legend {
  display: flex;
  flex-wrap: wrap;
  gap: var(--s-md);
  padding: var(--s-sm) var(--s-md);
  background: var(--panel);
  border-top: 1px solid var(--line);
  font-size: var(--text-xs);
  color: var(--muted);
}

.map-legend-item {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.map-legend-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  flex-shrink: 0;
}
.map-legend-dot.eq { background: var(--eq); }
.map-legend-dot.hu { background: var(--hu); }
.map-legend-dot.to { background: var(--to); }
.map-legend-dot.user { background: #dc2626; }

/* Your Area section (populated by Worker) */
.your-area-section {
  padding: var(--s-xl) 0;
  border-top: 1px solid var(--line-subtle);
}

.your-area-section:empty {
  display: none;
}

.your-area-section h2 {
  display: flex;
  align-items: center;
  gap: var(--s-sm);
}

.your-area-section h2::before {
  content: "📍";
  font-size: 1.2em;
}

/* Alert-specific Your Area styling */
body[data-alert="critical"] .your-area-section .card {
  border-color: var(--alert-border);
  background: var(--alert-bg);
}
body[data-alert="severe"] .your-area-section .card {
  border-color: var(--alert-border);
  background: var(--alert-bg);
}
body[data-alert="warning"] .your-area-section .card {
  border-color: var(--alert-border);
  background: var(--alert-bg);
}

/* Responsive world map */
@media (max-width: 920px) {
  .world-map-wrapper { border-radius: var(--radius-sm); }
  .world-map .country-label { font-size: 5px; }
  .world-map .tooltip-bg { display: none; }
  .world-map .tooltip-text,
  .world-map .tooltip-sub { display: none; }
}

@media (max-width: 600px) {
  .map-legend { gap: var(--s-sm); font-size: 10px; }
}

/* ── Print styles ─────────────────────────────────────────────── */
@media print {
  .topbar, .theme-switch, .skip-link, .cta-row, .btn, .footer, .depth-toggle, .nav-hamburger, .emergency-banner { display: none !important; }
  body { background: #fff; color: #000; font-size: 12pt; }
  body::before { display: none !important; }
  .grid { display: block; }
  .col-4, .col-6, .col-8, .col-12 { width: 100%; }
  .card { box-shadow: none; border: 1px solid #ccc; break-inside: avoid; margin-bottom: 12pt; }
  .chip { border: 1px solid #999; }
  a { color: #000; text-decoration: underline; }
  a::after { content: " (" attr(href) ")"; font-size: 0.8em; color: #666; }
  .world-map-wrapper { box-shadow: none; border: 1px solid #ccc; }
  .depth-content [data-depth] { max-height: none !important; opacity: 1 !important; overflow: visible !important; margin-bottom: 8pt !important; }
  @page { margin: 1.5cm; }
}