:root {
  --bg: #f4f1ea;
  --card: #fffdf8;
  --ink: #1c2620;
  --ink-soft: #5a6660;
  --line: #e2ddd1;
  --green: #2f8f5b;
  --yellow: #d9b21f;
  --amber: #e08a1e;
  --orange: #df6b14;
  --deep: #c8470f;
  --red: #b21f1f;
  --shadow: 0 1px 2px rgba(28, 38, 32, .06), 0 4px 14px rgba(28, 38, 32, .05);
  --sans: "Helvetica Neue", "Segoe UI", Roboto, Arial, sans-serif;
  --num: "SF Mono", "Roboto Mono", ui-monospace, Menlo, Consolas, monospace;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  -webkit-text-size-adjust: 100%;
  -webkit-font-smoothing: antialiased;
}

.wrap {
  max-width: 540px;
  margin: 0 auto;
  padding: 16px 16px calc(28px + env(safe-area-inset-bottom));
}

/* ---- Alert banner ---- */
.alert-banner {
  background: var(--red);
  color: #fff;
  padding: 14px 16px calc(14px + env(safe-area-inset-top));
  padding-top: calc(14px + env(safe-area-inset-top));
  position: sticky;
  top: 0;
  z-index: 10;
  box-shadow: 0 2px 10px rgba(0, 0, 0, .25);
}
.alert-event { font-weight: 800; font-size: 1.05rem; letter-spacing: .01em; text-transform: uppercase; }
.alert-headline { font-size: .92rem; margin-top: 3px; line-height: 1.35; }
.alert-expires { font-size: .78rem; opacity: .85; margin-top: 4px; }

/* ---- Header ---- */
.head { padding: 8px 4px 4px; }
.head h1 { font-size: 1.35rem; margin: 0; font-weight: 800; letter-spacing: -.01em; }
.addr { margin: 4px 0 0; color: var(--ink-soft); font-size: .82rem; line-height: 1.4; }

/* ---- Context note ---- */
.context-note {
  margin: 10px 4px 0;
  padding: 9px 11px;
  background: color-mix(in srgb, var(--ink-soft) 8%, transparent);
  border-radius: 8px;
  color: var(--ink-soft);
  font-size: .78rem;
  line-height: 1.45;
}

/* ---- Hero ---- */
.hero {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 14px 14px 4px 14px;
  box-shadow: var(--shadow);
  padding: 22px 20px 18px;
  margin-top: 14px;
  position: relative;
  overflow: hidden;
}
.hero::before {
  content: "";
  position: absolute;
  left: 0; top: 0; bottom: 0;
  width: 5px;
  background: var(--state, var(--green));
}

.state-chip {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-size: .8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .04em;
  color: var(--state, var(--green));
  background: color-mix(in srgb, var(--state, var(--green)) 12%, transparent);
  padding: 5px 11px;
  border-radius: 999px;
}
.dot { width: 9px; height: 9px; border-radius: 50%; background: var(--state, var(--green)); }

.depth-line {
  display: flex;
  align-items: baseline;
  gap: 8px;
  margin-top: 14px;
}
.depth-num {
  font-family: var(--num);
  font-size: 4.4rem;
  font-weight: 700;
  line-height: .9;
  letter-spacing: -.03em;
  color: var(--ink);
  font-variant-numeric: tabular-nums;
}
.depth-unit { font-size: 1.4rem; font-weight: 600; color: var(--ink-soft); }

.depth-sub { font-size: 1rem; color: var(--ink-soft); margin-top: 8px; }
.est { font-size: .82rem; opacity: .8; }

.below-bank {
  margin-top: 14px;
  font-size: .95rem;
  font-weight: 600;
  color: var(--ink);
}

.meta-row {
  margin-top: 14px;
  padding-top: 12px;
  border-top: 1px solid var(--line);
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 6px;
  font-size: .78rem;
  color: var(--ink-soft);
}
.gage { font-family: var(--num); }

.fetch-note {
  margin-top: 12px;
  font-size: .82rem;
  color: var(--orange);
  font-weight: 600;
}

/* ---- Chart ---- */
.chart-card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 14px;
  box-shadow: var(--shadow);
  padding: 14px 14px 16px;
  margin-top: 14px;
}
.chart-controls { display: flex; gap: 8px; margin-bottom: 12px; }
.rng {
  flex: 1;
  border: 1px solid var(--line);
  background: var(--bg);
  color: var(--ink-soft);
  font: inherit;
  font-size: .85rem;
  font-weight: 600;
  padding: 9px 0;
  border-radius: 8px;
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
}
.rng.active {
  background: var(--ink);
  color: var(--card);
  border-color: var(--ink);
}
.chart-box { position: relative; height: 240px; }

/* ---- Ladder ---- */
.ladder-card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 14px;
  box-shadow: var(--shadow);
  padding: 16px 18px 18px;
  margin-top: 14px;
}
.ladder-card h2 {
  margin: 0 0 10px;
  font-size: .78rem;
  text-transform: uppercase;
  letter-spacing: .06em;
  color: var(--ink-soft);
}
.ladder { list-style: none; margin: 0; padding: 0; }
.ladder li {
  display: grid;
  grid-template-columns: 12px 1fr auto;
  align-items: center;
  gap: 10px;
  padding: 9px 0;
  border-bottom: 1px solid var(--line);
  font-size: .9rem;
}
.ladder li:last-child { border-bottom: none; }
.ladder li.current { font-weight: 700; }
.ladder li.current::after { content: "now"; }
.ladder .lad-dot { width: 11px; height: 11px; border-radius: 50%; }
.ladder .lad-name { color: var(--ink); }
.ladder .lad-depth { font-family: var(--num); color: var(--ink-soft); font-size: .82rem; }

/* ---- Notes / footer ---- */
.loc-note {
  margin: 16px 4px 0;
  font-size: .76rem;
  color: var(--ink-soft);
  line-height: 1.45;
}
.foot {
  margin: 14px 4px 0;
  font-size: .72rem;
  color: var(--ink-soft);
  line-height: 1.5;
}
.foot a { color: var(--green); text-decoration: none; }
.foot a:active { opacity: .6; }

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #14181a;
    --card: #1d2326;
    --ink: #eef1ee;
    --ink-soft: #9aa6a0;
    --line: #2c3438;
    --shadow: 0 1px 2px rgba(0,0,0,.3), 0 4px 14px rgba(0,0,0,.25);
  }
}