:root {
  --bg: #f4f7fb;
  --card: #ffffff;
  --ink: #152033;
  --muted: #637083;
  --line: #dce4ef;
  --green: #0b8f3a;
  --green-dark: #066629;
  --blue: #123b73;
  --amber: #f0a500;
  --shadow: 0 18px 40px rgba(18, 59, 115, 0.12);
  --radius: 22px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--ink);
  background: radial-gradient(circle at top left, #e7f3ff 0, var(--bg) 36rem);
}

.hero {
  background: linear-gradient(135deg, #0f2f5f, #145f36);
  color: white;
  padding: 48px 18px 42px;
}

.hero__inner {
  max-width: 1100px;
  margin: 0 auto;
}

.eyebrow {
  margin: 0 0 10px;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 0.78rem;
  color: #c7f7d6;
  font-weight: 700;
}

h1 {
  max-width: 860px;
  margin: 0;
  font-size: clamp(2rem, 4vw, 4rem);
  line-height: 1.05;
}

.lead {
  max-width: 740px;
  margin: 18px 0 26px;
  color: rgba(255,255,255,0.86);
  font-size: 1.1rem;
  line-height: 1.5;
}

.searchbox {
  max-width: 760px;
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px;
  background: rgba(255,255,255,0.12);
  border: 1px solid rgba(255,255,255,0.25);
  border-radius: 999px;
  backdrop-filter: blur(8px);
}

.searchbox input {
  width: 100%;
  border: 0;
  outline: 0;
  padding: 17px 20px;
  border-radius: 999px;
  font-size: 1.05rem;
  color: var(--ink);
  background: white;
}

.searchbox button {
  width: 46px;
  height: 46px;
  border: 0;
  border-radius: 50%;
  background: #ffffff;
  color: var(--blue);
  font-size: 1.8rem;
  line-height: 1;
  cursor: pointer;
}

.quicklinks {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 16px;
}

.quicklinks button {
  border: 1px solid rgba(255,255,255,0.3);
  background: rgba(255,255,255,0.13);
  color: white;
  border-radius: 999px;
  padding: 8px 12px;
  cursor: pointer;
}

.layout {
  max-width: 1100px;
  margin: -26px auto 60px;
  padding: 0 18px;
  display: grid;
  gap: 20px;
}

.panel {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 24px;
}

.panel h2 {
  margin: 0 0 16px;
  font-size: 1.35rem;
}

.result-card {
  display: grid;
  gap: 16px;
}

.result-main {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
}

.unit-pill {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  padding: 12px 16px;
  border-radius: 18px;
  background: #eaf8ef;
  color: var(--green-dark);
  font-weight: 800;
  font-size: 1.25rem;
}

.unit-pill small {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--muted);
}

.confidence {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 12px;
  border-radius: 999px;
  background: #f6f8fb;
  border: 1px solid var(--line);
  color: var(--muted);
  font-weight: 700;
}

.result-card p { margin: 0; line-height: 1.5; }

.tunnel-units {
  display: grid;
  gap: 8px;
}

.tunnel-units ul {
  margin: 0;
  padding-left: 1.15rem;
  display: grid;
  gap: 4px;
}

.tunnel-units li {
  line-height: 1.45;
}

.meta {
  display: grid;
  gap: 8px;
  color: var(--muted);
  font-size: 0.95rem;
}

.matches {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 4px;
}

.matches button {
  border: 1px solid var(--line);
  background: #f8fbff;
  border-radius: 999px;
  padding: 7px 10px;
  cursor: pointer;
}

.empty-state {
  color: var(--muted);
  background: #f8fbff;
  border: 1px dashed #c9d6e6;
  border-radius: 16px;
  padding: 18px;
}

.unit-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 12px;
}

.unit-card {
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 14px;
  background: #fbfdff;
}

.unit-card strong {
  display: block;
  color: var(--blue);
  margin-bottom: 4px;
}

.unit-card span {
  color: var(--muted);
  font-size: 0.92rem;
}

.panel-title-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

.badge {
  background: #fff7df;
  color: #8a5c00;
  border: 1px solid #ffe2a3;
  padding: 6px 10px;
  border-radius: 999px;
  font-size: 0.85rem;
  font-weight: 700;
}

.map {
  width: 100%;
  height: auto;
  display: block;
  border-radius: 16px;
  border: 1px solid var(--line);
}

.note-panel p {
  margin: 0;
  color: var(--muted);
  line-height: 1.6;
}

@media (min-width: 900px) {
  .layout {
    grid-template-columns: 1.1fr 0.9fr;
  }
  .map-panel, .note-panel {
    grid-column: 1 / -1;
  }
}