/* Asteroid Watch — space-themed, dark, offline-first */
:root {
  --bg: #06070d;
  --bg-elev: #0d1020;
  --bg-card: #11152a;
  --border: #1f2540;
  --text: #e7eaf6;
  --text-dim: #8a92b2;
  --text-mute: #5a6285;
  --accent: #7aa2ff;
  --accent-2: #c084fc;
  --risk-low: #4ade80;
  --risk-med: #fbbf24;
  --risk-high: #f87171;
  --risk-extreme: #ef4444;
  --radius: 14px;
  --radius-sm: 8px;
  --font-stack: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, Inter, sans-serif;
  --font-mono: ui-monospace, "JetBrains Mono", "Cascadia Code", Consolas, monospace;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: var(--font-stack);
  background:
    radial-gradient(ellipse at top, #1a1f4a 0%, var(--bg) 55%) fixed,
    var(--bg);
  color: var(--text);
  line-height: 1.5;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--accent); }
a:focus-visible, button:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
  border-radius: var(--radius-sm);
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0.5rem;
  background: var(--accent);
  color: #06070d;
  padding: 0.5rem 1rem;
  border-radius: var(--radius-sm);
  font-weight: 600;
  z-index: 100;
}
.skip-link:focus { left: 0.5rem; }

.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1rem 1.25rem;
  border-bottom: 1px solid var(--border);
  background: rgba(6, 7, 13, 0.85);
  backdrop-filter: blur(10px);
  position: sticky;
  top: 0;
  z-index: 10;
}
.brand { display: flex; align-items: center; gap: 0.85rem; }
.brand-mark {
  font-size: 1.6rem;
  color: var(--accent);
  text-shadow: 0 0 12px rgba(122, 162, 255, 0.6);
}
.brand h1 {
  margin: 0;
  font-size: 1.15rem;
  letter-spacing: -0.01em;
}
.tagline {
  margin: 0;
  color: var(--text-dim);
  font-size: 0.78rem;
}
.header-actions { display: flex; align-items: center; gap: 0.6rem; }

.net-status {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.78rem;
  color: var(--text-dim);
  padding: 0.25rem 0.55rem;
  border-radius: 999px;
  background: var(--bg-elev);
  border: 1px solid var(--border);
}
.net-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--risk-low);
  box-shadow: 0 0 6px var(--risk-low);
}
.net-status--offline .net-dot { background: var(--text-mute); box-shadow: none; }

.icon-btn, .install-btn {
  background: var(--bg-elev);
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-family: inherit;
  transition: background 0.15s, border-color 0.15s;
}
.icon-btn {
  width: 36px;
  height: 36px;
  font-size: 1.1rem;
}
.install-btn {
  padding: 0 0.8rem;
  height: 36px;
  font-size: 0.85rem;
  font-weight: 600;
}
.icon-btn:hover, .install-btn:hover {
  background: var(--bg-card);
  border-color: var(--accent);
}

.layout {
  max-width: 1200px;
  margin: 0 auto;
  padding: 1.5rem 1.25rem 3rem;
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.hero h2 {
  font-size: 1.4rem;
  margin: 0 0 0.4rem;
  letter-spacing: -0.01em;
}
.hero h2 span { color: var(--text-dim); font-weight: 400; }
.hero-footnote {
  color: var(--text-dim);
  font-size: 0.8rem;
  margin: 1rem 0 0;
}
.hero-footnote a { color: var(--text-dim); text-decoration: underline; }

.hero-stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 0.8rem;
  margin-top: 1rem;
}
.stat-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1rem 1.1rem;
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
  position: relative;
  overflow: hidden;
}
.stat-card::before {
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  width: 3px;
  background: var(--accent);
}
.stat-card[data-tone="warn"]::before { background: var(--risk-med); }
.stat-card[data-tone="risk"]::before { background: var(--risk-high); }
.stat-value {
  font-size: 1.8rem;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  letter-spacing: -0.02em;
}
.stat-label {
  font-size: 0.78rem;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.panel {
  background: rgba(13, 16, 32, 0.6);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem;
}
.panel-header h2 {
  margin: 0 0 0.25rem;
  font-size: 1.15rem;
  letter-spacing: -0.01em;
}
.panel-header p {
  margin: 0 0 1rem;
  color: var(--text-dim);
  font-size: 0.85rem;
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 0.8rem;
}

.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1rem 1.1rem;
  display: flex;
  flex-direction: column;
  gap: 0.7rem;
  transition: border-color 0.15s, transform 0.15s;
}
.card:hover {
  border-color: var(--accent);
  transform: translateY(-1px);
}
.card-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 0.6rem;
}
.card-title {
  margin: 0;
  font-size: 1rem;
  font-weight: 600;
  word-break: break-word;
}
.card-foot {
  margin: 0;
  font-size: 0.72rem;
  color: var(--text-mute);
  font-family: var(--font-mono);
}
.card-grid-stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.4rem 0.8rem;
  margin: 0;
  font-size: 0.85rem;
}
.card-grid-stats > div {
  display: flex;
  flex-direction: column;
  gap: 0.1rem;
  min-width: 0;
}
.card-grid-stats dt {
  font-size: 0.65rem;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.card-grid-stats dd {
  margin: 0;
  font-variant-numeric: tabular-nums;
  font-family: var(--font-mono);
  overflow-wrap: anywhere;
}

.risk-badge, .hazard-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  padding: 0.18rem 0.55rem;
  border-radius: 999px;
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  flex-shrink: 0;
  white-space: nowrap;
}
.risk-badge[data-level="low"]   { background: rgba(74, 222, 128, 0.15); color: var(--risk-low); }
.risk-badge[data-level="med"]   { background: rgba(251, 191, 36, 0.15); color: var(--risk-med); }
.risk-badge[data-level="high"]  { background: rgba(248, 113, 113, 0.18); color: var(--risk-high); }
.risk-badge[data-level="extreme"] { background: rgba(239, 68, 68, 0.25); color: var(--risk-extreme); }
.hazard-badge {
  background: rgba(248, 113, 113, 0.15);
  color: var(--risk-high);
}

.empty-state {
  text-align: center;
  color: var(--text-dim);
  padding: 1.5rem;
  margin: 0;
}

.site-footer {
  text-align: center;
  padding: 2rem 1.25rem;
  border-top: 1px solid var(--border);
  color: var(--text-dim);
  font-size: 0.8rem;
}
.site-footer p { margin: 0.3rem 0; }
.site-footer .legal a { color: var(--text-dim); }

.toast {
  position: fixed;
  bottom: 1rem;
  left: 50%;
  transform: translateX(-50%);
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 0.7rem 1rem;
  font-size: 0.85rem;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.4);
  z-index: 50;
}

@media (max-width: 480px) {
  .brand h1 { font-size: 1rem; }
  .tagline { display: none; }
  .hero-stats { grid-template-columns: repeat(2, 1fr); }
  .stat-value { font-size: 1.5rem; }
}

@media (prefers-reduced-motion: reduce) {
  .card { transition: none; }
}