:root {
  --bg: #f8f5ef;
  --surface: #fffdf8;
  --surface-soft: #f1eee6;
  --text: #171614;
  --muted: #676f7a;
  --faint: #8b9087;
  --border: #ded8cc;
  --border-strong: #c9c0b1;
  --accent: #196b69;
  --accent-dark: #104847;
  --river: #2d7f95;
  --low: #c35a4c;
  --good: #287a55;
  --high: #2f6fae;
  --row-low: #fff1ed;
  --row-good: #eef8ef;
  --row-high: #edf5ff;
  --row-grey: #f1f0ec;
  --shadow: 0 18px 60px rgba(39, 35, 28, 0.08);
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html { background: var(--bg); }

body {
  min-width: 0;
  font-family: "DM Sans", Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background:
    radial-gradient(circle at top left, rgba(45, 127, 149, 0.12), transparent 30rem),
    linear-gradient(180deg, #fcfaf6 0%, var(--bg) 58%);
  color: var(--text);
  line-height: 1.5;
  padding: 3.5rem 1.25rem;
  overflow-x: hidden;
}

a {
  color: inherit;
  text-decoration-color: rgba(23, 22, 20, 0.32);
  text-underline-offset: 0.18em;
}

a:hover { text-decoration-color: currentColor; }

.site-shell {
  width: min(100%, 980px);
  margin: 0 auto;
}

.hero {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(15rem, 23rem);
  align-items: center;
  gap: 4rem;
  min-height: min(680px, calc(100svh - 7rem));
  padding: 1rem 0 4rem;
  overflow: hidden;
}

.hero-copy {
  position: relative;
  z-index: 1;
  max-width: 41rem;
}

.eyebrow,
.section-kicker {
  color: var(--accent);
  font-size: 0.74rem;
  font-weight: 760;
  letter-spacing: 0.14em;
  margin-bottom: 0.8rem;
  text-transform: uppercase;
}

h1 {
  font-size: clamp(3.2rem, 8.5vw, 6.5rem);
  font-weight: 820;
  letter-spacing: -0.055em;
  line-height: 0.88;
  margin-bottom: 1.3rem;
}

h1 a {
  color: inherit;
  text-decoration: none;
}

.tagline {
  max-width: 39rem;
  color: #4f5b67;
  font-size: clamp(1.25rem, 2.8vw, 2rem);
  line-height: 1.18;
}

.actions {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem 1.25rem;
  margin-top: 2rem;
  color: var(--muted);
  font-size: 0.96rem;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 2.9rem;
  padding: 0.72rem 1.1rem;
  border: 1.5px solid var(--accent-dark);
  background: transparent;
  color: var(--accent-dark);
  font-weight: 680;
  line-height: 1;
  text-decoration: none;
}

.button:hover {
  background: var(--accent-dark);
  color: #fffdf8;
  text-decoration: none;
}

.river-mark {
  position: relative;
  height: 33rem;
  border-left: 1px solid rgba(25, 107, 105, 0.2);
}

.river-line {
  position: absolute;
  left: 48%;
  display: block;
  width: 16rem;
  height: 43rem;
  border: 2px solid transparent;
  border-left-color: rgba(45, 127, 149, 0.5);
  border-radius: 50%;
  transform: translateX(-50%) rotate(22deg);
}

.line-one { top: -6rem; }
.line-two {
  top: -3.5rem;
  left: 60%;
  border-left-color: rgba(45, 127, 149, 0.26);
}
.line-three {
  top: -1.2rem;
  left: 72%;
  border-left-color: rgba(45, 127, 149, 0.16);
}

.content-grid {
  display: grid;
  grid-template-columns: minmax(12rem, 0.75fr) minmax(0, 1.25fr);
  gap: 4rem;
  padding: 3rem 0;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

h2 {
  max-width: 22rem;
  font-size: clamp(1.65rem, 4vw, 2.8rem);
  font-weight: 780;
  letter-spacing: -0.04em;
  line-height: 1;
}

.steps {
  display: grid;
  gap: 0;
  list-style: none;
}

.steps li {
  display: grid;
  grid-template-columns: 3rem minmax(0, 1fr);
  gap: 1.3rem;
  padding: 1.15rem 0;
  border-top: 1px solid var(--border);
}

.steps li:last-child { border-bottom: 1px solid var(--border); }

.steps span {
  color: var(--faint);
  font-size: 0.78rem;
  font-weight: 760;
  letter-spacing: 0.1em;
}

.steps p {
  min-width: 0;
  overflow-wrap: anywhere;
  font-size: clamp(1rem, 2vw, 1.16rem);
}

.steps strong { overflow-wrap: anywhere; }

.steps em { white-space: nowrap; }

.closing,
.footer {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  margin-top: 3rem;
  color: var(--muted);
  font-size: 0.92rem;
}

.closing a { font-weight: 720; }

.directory-shell { max-width: 1100px; }

.page-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 2rem;
  padding-bottom: 2.25rem;
}

.page-header h1 {
  margin-bottom: 0.8rem;
  font-size: clamp(2.6rem, 6vw, 4.5rem);
}

.page-header .tagline {
  font-size: clamp(1.15rem, 2vw, 1.45rem);
}

.text-link {
  margin-top: 0.55rem;
  color: var(--muted);
  font-size: 0.94rem;
  font-weight: 680;
}

.meta-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.85rem 0;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.legend {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem 1rem;
  font-size: 0.86rem;
}

.legend span {
  display: inline-flex;
  align-items: center;
  gap: 0.38rem;
}

.dot {
  display: inline-block;
  width: 0.55rem;
  height: 0.55rem;
  border-radius: 50%;
}

.dot-low { background: var(--low); }
.dot-good { background: var(--good); }
.dot-high { background: var(--high); }

.refresh-note {
  color: var(--muted);
  font-size: 0.82rem;
  text-align: right;
}

.table-wrap {
  margin-top: 1.5rem;
  overflow-x: auto;
  background: rgba(255, 253, 248, 0.54);
  box-shadow: var(--shadow);
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.94rem;
}

th {
  position: sticky;
  top: 0;
  z-index: 1;
  background: var(--surface);
  color: var(--muted);
  font-size: 0.68rem;
  font-weight: 780;
  letter-spacing: 0.11em;
  padding: 0.8rem 0.9rem;
  text-align: left;
  text-transform: uppercase;
  white-space: nowrap;
}

td {
  border-top: 1px solid rgba(222, 216, 204, 0.78);
  padding: 0.78rem 0.9rem;
  vertical-align: middle;
}

tbody tr {
  background: var(--surface);
}

tbody tr.low { background: var(--row-low); }
tbody tr.good { background: var(--row-good); }
tbody tr.high { background: var(--row-high); }
tbody tr.grey {
  background: var(--row-grey);
  color: var(--muted);
}

tbody tr.low td:first-child { box-shadow: inset 3px 0 var(--low); }
tbody tr.good td:first-child { box-shadow: inset 3px 0 var(--good); }
tbody tr.high td:first-child { box-shadow: inset 3px 0 var(--high); }

.river-name {
  font-weight: 680;
  text-decoration-thickness: 1px;
}

.location { color: #3f454b; }

.flow {
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}

.cmd {
  font-family: ui-monospace, "SFMono-Regular", "Cascadia Code", monospace;
  font-size: 0.82rem;
  letter-spacing: 0.01em;
  white-space: nowrap;
}

.age {
  color: var(--muted);
  font-size: 0.82rem;
  white-space: nowrap;
}

.message-row td {
  color: var(--muted);
  padding: 2.2rem 1rem;
  text-align: center;
}

@media (max-width: 760px) {
  body { padding: 2rem 1rem; }

  .hero {
    display: block;
    min-height: auto;
    padding: 1.5rem 0 3rem;
  }

  .river-mark {
    height: 8rem;
    margin-top: 2rem;
    border-left: 0;
    overflow: hidden;
  }

  .river-line {
    left: 12%;
    width: 15rem;
    height: 18rem;
    transform: rotate(70deg);
  }

  h1 {
    font-size: clamp(3.8rem, 22vw, 5.4rem);
    letter-spacing: -0.055em;
  }

  .tagline {
    max-width: 19rem;
    font-size: 1.28rem;
    overflow-wrap: normal;
  }

  .actions {
    align-items: flex-start;
    flex-direction: column;
  }

  .content-grid {
    display: block;
    padding: 2.25rem 0;
  }

  h2 {
    margin-bottom: 1.35rem;
    font-size: 2rem;
  }

  .steps li {
    display: block;
    padding: 1rem 0;
  }

  .steps span {
    display: block;
    margin-bottom: 0.35rem;
  }

  .steps em { white-space: normal; }

  .closing,
  .footer,
  .page-header,
  .meta-row {
    align-items: flex-start;
    flex-direction: column;
  }

  .page-header { gap: 0.25rem; }

  .page-header h1 { font-size: 2.8rem; }

  .refresh-note { text-align: left; }

  .table-wrap {
    margin-top: 1.1rem;
    overflow: visible;
    background: transparent;
    box-shadow: none;
  }

  table,
  thead,
  tbody,
  tr,
  th,
  td {
    display: block;
  }

  thead { display: none; }

  tbody {
    display: grid;
    gap: 0.8rem;
  }

  tbody tr {
    padding: 0.9rem 1rem;
    border: 1px solid var(--border);
    box-shadow: var(--shadow);
  }

  tbody tr.low,
  tbody tr.good,
  tbody tr.high,
  tbody tr.grey {
    background: var(--surface);
  }

  tbody tr.low { border-left: 4px solid var(--low); }
  tbody tr.good { border-left: 4px solid var(--good); }
  tbody tr.high { border-left: 4px solid var(--high); }
  tbody tr.grey { border-left: 4px solid var(--border-strong); }
  tbody tr.message-row {
    border-left: 0;
    box-shadow: none;
  }

  tbody tr.low td:first-child,
  tbody tr.good td:first-child,
  tbody tr.high td:first-child {
    box-shadow: none;
  }

  td {
    display: block;
    border-top: 0;
    padding: 0.38rem 0;
    min-width: 0;
  }

  td::before {
    content: attr(data-label);
    display: block;
    color: var(--muted);
    font-size: 0.68rem;
    font-weight: 780;
    letter-spacing: 0.1em;
    margin-bottom: 0.12rem;
    text-transform: uppercase;
  }

  td:first-child {
    display: block;
    padding-bottom: 0.55rem;
  }

  td:first-child::before { display: none; }

  .message-row td {
    display: block;
    padding: 1.2rem 0;
    text-align: left;
  }

  .river-name {
    font-size: 1.12rem;
  }

  .cmd {
    overflow-wrap: anywhere;
    white-space: normal;
  }

  .flow,
  .age {
    white-space: normal;
  }
}

@media (max-width: 420px) {
  body { padding-inline: 0.85rem; }

  .tagline { font-size: 1.27rem; }

  .legend { gap: 0.5rem 0.75rem; }

  td { padding-block: 0.34rem; }
}

/* ── filter bar ── */
.filter-bar {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.6rem 1rem;
  margin-top: 1rem;
}

.search-input {
  padding: 0.38rem 0.7rem;
  border: 1px solid var(--border-strong);
  background: var(--surface);
  color: var(--text);
  font-family: inherit;
  font-size: 0.87rem;
  width: 14rem;
  appearance: none;
}

.search-input:focus {
  outline: 2px solid var(--accent);
  outline-offset: -1px;
}

.status-btns {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
}

.status-btn {
  padding: 0.28rem 0.65rem;
  border: 1px solid var(--border-strong);
  background: var(--surface);
  color: var(--muted);
  font-family: inherit;
  font-size: 0.8rem;
  cursor: pointer;
}

.status-btn:hover { border-color: var(--text); color: var(--text); }

.status-btn.active              { background: var(--text); border-color: var(--text); color: #fffdf8; }
.status-btn.btn-low.active      { background: var(--low);  border-color: var(--low);  color: #fff; }
.status-btn.btn-good.active     { background: var(--good); border-color: var(--good); color: #fff; }
.status-btn.btn-high.active     { background: var(--high); border-color: var(--high); color: #fff; }

/* ── sortable column headers ── */
th.sortable {
  cursor: pointer;
  user-select: none;
}

th.sortable:hover { color: var(--text); }

th.sortable::after {
  content: '';
  display: inline-block;
  width: 1.1em;
  color: var(--faint);
}

th.sortable[data-dir="asc"]::after  { content: ' ↑'; }
th.sortable[data-dir="desc"]::after { content: ' ↓'; }

@media (max-width: 760px) {
  .filter-bar { margin-top: 0.75rem; }
  .search-input { width: 100%; }
}