/* ---------- tokens: light is the base, both themes defined at token level ---------- */
:root {
  --ink:        #131c24;
  --ink-2:      #3c4c57;
  --ink-3:      #64757f;
  --ground:     #e7ebec;
  --surface:    #f4f7f7;
  --surface-2:  #dde4e5;
  --line:       #c3ced1;
  --line-soft:  #d5dedf;
  --accent:     #14657a;
  --accent-ink: #0e4d5e;
  --accent-wash:#d3e4e8;
  --signal:     #a8442a;
  --signal-wash:#f0dcd5;
  --on-accent:  #f4f7f7;
  --focus:      #14657a;

  --f-display: "Newsreader", "Iowan Old Style", Georgia, serif;
  --f-body: "Atkinson Hyperlegible", "Segoe UI", system-ui, sans-serif;
  --f-mono: "IBM Plex Mono", ui-monospace, "SFMono-Regular", Menlo, monospace;

  --measure: 66ch;
  --pad: clamp(1.25rem, 5vw, 3rem);
  --rule: 1px solid var(--line);
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --ink:        #e3eaec;
    --ink-2:      #a9b8bf;
    --ink-3:      #7b8d95;
    --ground:     #0f161b;
    --surface:    #18222a;
    --surface-2:  #202d36;
    --line:       #2c3a44;
    --line-soft:  #243139;
    --accent:     #4fb0c6;
    --accent-ink: #7fcadb;
    --accent-wash:#16323b;
    --signal:     #d97a5c;
    --signal-wash:#33201a;
    --on-accent:  #0f161b;
    --focus:      #4fb0c6;
  }
}
:root[data-theme="dark"] {
  --ink:        #e3eaec;
  --ink-2:      #a9b8bf;
  --ink-3:      #7b8d95;
  --ground:     #0f161b;
  --surface:    #18222a;
  --surface-2:  #202d36;
  --line:       #2c3a44;
  --line-soft:  #243139;
  --accent:     #4fb0c6;
  --accent-ink: #7fcadb;
  --accent-wash:#16323b;
  --signal:     #d97a5c;
  --signal-wash:#33201a;
  --on-accent:  #0f161b;
  --focus:      #4fb0c6;
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--ground);
  color: var(--ink);
  font-family: var(--f-body);
  font-size: clamp(1rem, 0.96rem + 0.2vw, 1.075rem);
  line-height: 1.62;
  font-synthesis-weight: none;
}
img, svg { max-width: 100%; }
a { color: var(--accent-ink); text-underline-offset: 0.18em; text-decoration-thickness: 1px; }
a:hover { color: var(--ink); }
:focus-visible { outline: 2px solid var(--focus); outline-offset: 3px; border-radius: 2px; }

/* ---------- layout ---------- */
.wrap { max-width: 74rem; margin-inline: auto; padding-inline: var(--pad); }
.band { border-top: var(--rule); }
.band > .wrap { padding-block: clamp(2.75rem, 7vw, 4.75rem); }
.col { max-width: var(--measure); }
.stack { display: flex; flex-direction: column; }
.stack > * { margin: 0; }
.g-sm { gap: .6rem; } .g-md { gap: 1.1rem; } .g-lg { gap: 2rem; } .g-xl { gap: 3rem; }

/* ---------- type ---------- */
h1, h2, h3 { font-family: var(--f-display); font-weight: 500; text-wrap: balance; line-height: 1.14; margin: 0; }
h1 { font-size: clamp(2.4rem, 1.5rem + 4.2vw, 4.4rem); letter-spacing: -0.015em; }
h2 { font-size: clamp(1.7rem, 1.25rem + 1.9vw, 2.55rem); letter-spacing: -0.01em; }
h3 { font-size: clamp(1.12rem, 1.02rem + 0.4vw, 1.32rem); line-height: 1.28; }
p { margin: 0; }
.lede { font-family: var(--f-display); font-size: clamp(1.2rem, 1.05rem + 0.75vw, 1.6rem); line-height: 1.45; color: var(--ink-2); }
.label {
  font-family: var(--f-mono); font-size: .68rem; font-weight: 600;
  letter-spacing: .13em; text-transform: uppercase; color: var(--ink-3);
}
.mono { font-family: var(--f-mono); font-variant-numeric: tabular-nums; }
.small { font-size: .875rem; line-height: 1.55; color: var(--ink-2); }
strong { font-weight: 700; }

.eyebrow { display: flex; align-items: baseline; gap: .75rem; padding-bottom: .9rem; border-bottom: var(--rule); margin-bottom: 1.6rem; }
.eyebrow .label { color: var(--accent-ink); }

/* ---------- status chip ---------- */
.status {
  display: inline-flex; align-items: center; gap: .55rem;
  font-family: var(--f-mono); font-size: .72rem; font-weight: 500; letter-spacing: .09em; text-transform: uppercase;
  color: var(--signal); background: var(--signal-wash);
  border: 1px solid color-mix(in srgb, var(--signal) 32%, transparent);
  padding: .4rem .7rem; border-radius: 2px; width: fit-content;
}
.status::before { content: ""; width: .45rem; height: .45rem; background: var(--signal); border-radius: 50%; flex: none; }

/* ---------- hero ---------- */
.hero > .wrap { padding-block: clamp(3rem, 9vw, 6rem) clamp(2.5rem, 6vw, 4rem); }
.hero h1 { margin-block: 1.5rem 0; }
.hero .lede { margin-top: 1.4rem; max-width: 52ch; }
.wordmark { display: flex; align-items: center; gap: .8rem; }
.wordmark svg { flex: none; }
.wordmark span { font-family: var(--f-mono); font-size: .8rem; font-weight: 600; letter-spacing: .17em; text-transform: uppercase; }

/* ---------- reservoir figure ---------- */
.figure { border: var(--rule); background: var(--surface); }
.figure-head { display: flex; flex-wrap: wrap; gap: .5rem 1.5rem; justify-content: space-between; padding: .85rem 1.1rem; border-bottom: var(--rule); }
.res-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(210px, 1fr)); gap: 1px; background: var(--line); }
.res { padding: 1.4rem 1.1rem 1.5rem; background: var(--surface); display: flex; flex-direction: column; gap: .9rem; }
.res-svg { display: block; height: 140px; width: 100%; }
.res-name { font-family: var(--f-display); font-size: 1.1rem; font-weight: 600; line-height: 1.2; }
.res-meta { display: flex; flex-direction: column; gap: .3rem; }
.res-use { font-family: var(--f-mono); font-size: .74rem; font-weight: 500; letter-spacing: .04em; }
.use-open { color: var(--accent-ink); }
.use-limited { color: var(--ink-2); }
.use-closed { color: var(--signal); }
.figure-foot { padding: .85rem 1.1rem; border-top: var(--rule); }

/* ---------- three pillars ---------- */
.pillars { display: grid; gap: 1px; background: var(--line); border: var(--rule); }
@media (min-width: 46rem) { .pillars { grid-template-columns: repeat(3, 1fr); } }
.pillar { background: var(--surface); padding: 1.5rem 1.3rem; display: flex; flex-direction: column; gap: .7rem; }
.pillar .label { color: var(--accent-ink); }

/* ---------- evidence card ---------- */
.card { border: 2px solid var(--ink); background: var(--surface); max-width: 44rem; }
.card-head { padding: 1.1rem 1.3rem; border-bottom: 2px solid var(--ink); display: flex; flex-wrap: wrap; gap: 1rem; align-items: flex-start; justify-content: space-between; }
.card-title { font-family: var(--f-display); font-size: clamp(1.15rem, 1rem + 0.6vw, 1.45rem); font-weight: 600; line-height: 1.22; max-width: 32ch; }
.grade { display: flex; flex-direction: column; align-items: flex-end; gap: .3rem; flex: none; }
.grade-mark { font-family: var(--f-display); font-size: 2.4rem; font-weight: 600; line-height: 1; color: var(--accent-ink); }
.grade-scale { display: flex; gap: 3px; }
.grade-step { width: 1.4rem; height: .3rem; background: var(--line); }
.grade-step.on { background: var(--accent); }
.card-body { padding: 1.3rem; display: flex; flex-direction: column; gap: 1.2rem; }
.card-claim { font-family: var(--f-display); font-size: 1.12rem; line-height: 1.45; }
.rows { display: grid; gap: 1px; background: var(--line-soft); border-block: 1px solid var(--line-soft); }
.row { background: var(--surface); display: grid; gap: .1rem .9rem; padding: .6rem .1rem; }
@media (min-width: 34rem) { .row { grid-template-columns: 13rem 1fr; padding-block: .5rem; } }
.row dt { font-family: var(--f-mono); font-size: .72rem; font-weight: 500; letter-spacing: .06em; text-transform: uppercase; color: var(--ink-3); padding-top: .2rem; }
.row dd { margin: 0; font-size: .93rem; }
.limits { background: var(--signal-wash); border-inline-start: 3px solid var(--signal); padding: .85rem 1rem; }
.limits .label { color: var(--signal); }
.sources { display: flex; flex-direction: column; gap: .5rem; font-size: .82rem; }
.sources .src { font-family: var(--f-mono); font-size: .76rem; line-height: 1.5; color: var(--ink-2); }
.card-foot { padding: .8rem 1.3rem; border-top: 1px solid var(--line); display: flex; flex-wrap: wrap; gap: .4rem 1.4rem; }

/* ---------- grade legend ---------- */
.legend { display: grid; gap: 1px; background: var(--line); border: var(--rule); max-width: 44rem; }
@media (min-width: 40rem) { .legend { grid-template-columns: repeat(4, 1fr); } }
.legend-item { background: var(--surface); padding: .9rem 1rem; display: flex; flex-direction: column; gap: .25rem; }
.legend-item b { font-family: var(--f-display); font-size: 1.4rem; font-weight: 600; line-height: 1; color: var(--accent-ink); }
.legend-item span { font-size: .82rem; line-height: 1.4; color: var(--ink-2); }

/* ---------- plan list ---------- */
.plan { display: grid; gap: 1px; background: var(--line); border: var(--rule); }
@media (min-width: 34rem) { .plan { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 58rem) { .plan { grid-template-columns: repeat(4, 1fr); } }
.plan-item { background: var(--surface); padding: 1.1rem 1rem; display: flex; flex-direction: column; gap: .3rem; }
.plan-item .plan-num { font-family: var(--f-display); font-size: 2rem; font-weight: 600; line-height: 1; color: var(--accent-ink); font-variant-numeric: tabular-nums; }
.plan-item > span:not(.plan-num) { font-size: .88rem; line-height: 1.4; color: var(--ink-2); }

/* ---------- negative list ---------- */
.nots { list-style: none; padding: 0; margin: 0; display: flex; flex-direction: column; gap: 1px; background: var(--line); border: var(--rule); max-width: 46rem; }
.nots li { background: var(--surface); padding: .85rem 1.1rem .85rem 2.6rem; position: relative; font-size: .95rem; }
.nots li::before {
  content: "×"; position: absolute; left: 1rem; top: .8rem;
  font-family: var(--f-mono); font-size: 1rem; color: var(--signal); font-weight: 600;
}

/* ---------- form ---------- */
.form { display: grid; gap: 1.1rem; max-width: 40rem; }
.field { display: flex; flex-direction: column; gap: .35rem; }
.field label { font-family: var(--f-mono); font-size: .72rem; font-weight: 500; letter-spacing: .07em; text-transform: uppercase; color: var(--ink-3); }
.field input, .field select, .field textarea {
  font: inherit; font-size: .95rem; color: var(--ink);
  background: var(--surface); border: 1px solid var(--line); border-radius: 2px;
  padding: .6rem .7rem; width: 100%;
}
.field textarea { min-height: 8rem; resize: vertical; }
.btn {
  font-family: var(--f-mono); font-size: .8rem; font-weight: 600; letter-spacing: .09em; text-transform: uppercase;
  background: var(--accent); color: var(--on-accent);
  border: 1px solid var(--accent); border-radius: 2px;
  padding: .8rem 1.4rem; cursor: pointer; width: fit-content;
  transition: background 120ms ease, color 120ms ease;
}
.btn:hover { background: var(--accent-ink); border-color: var(--accent-ink); }
.form-note { font-size: .82rem; color: var(--ink-3); max-width: 46ch; }

/* ---------- bio ---------- */
.bio { display: grid; gap: 1.6rem; }
@media (min-width: 50rem) { .bio { grid-template-columns: minmax(0, 1fr) 17rem; gap: 2.5rem; } }
.bio-facts { border-inline-start: 2px solid var(--accent); padding-inline-start: 1.1rem; display: flex; flex-direction: column; gap: .8rem; align-self: start; }
.bio-fact { display: flex; flex-direction: column; gap: .1rem; }
.bio-fact b { font-family: var(--f-mono); font-size: 1.15rem; font-weight: 600; color: var(--ink); }
.bio-fact span { font-size: .8rem; color: var(--ink-3); line-height: 1.35; }

/* ---------- footer ---------- */
footer { border-top: var(--rule); background: var(--surface); }
footer > .wrap { padding-block: 2.25rem; display: flex; flex-wrap: wrap; gap: 1.25rem 2.5rem; justify-content: space-between; align-items: flex-start; }
.foot-links { display: flex; gap: 1.25rem; flex-wrap: wrap; }
.foot-links a { font-family: var(--f-mono); font-size: .76rem; letter-spacing: .05em; text-transform: uppercase; }

.pullquote { font-family: var(--f-display); font-style: italic; font-size: clamp(1.25rem, 1.05rem + 0.9vw, 1.75rem); line-height: 1.4; color: var(--ink); border-inline-start: 3px solid var(--accent); padding-inline-start: 1.2rem; max-width: 34ch; }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .001ms !important; transition-duration: .001ms !important; }
}

/* ---------- legal / document pages ---------- */
.doc { max-width: 46rem; margin-inline: auto; padding-block: clamp(2.5rem, 7vw, 4.5rem); }
.doc h1 { font-size: clamp(1.9rem, 1.4rem + 2vw, 2.8rem); margin-bottom: 1.75rem; }
.doc h2 { font-size: clamp(1.15rem, 1.05rem + 0.5vw, 1.4rem); margin-top: 2.25rem; margin-bottom: .6rem; }
.doc p, .doc ul { margin-block: 0 .9rem; }
.doc ul { padding-inline-start: 1.2rem; }
.doc li { margin-bottom: .35rem; }
.doc address { font-style: normal; }
.backlink { display: inline-block; margin-bottom: 2rem; font-family: var(--f-mono); font-size: .76rem; letter-spacing: .06em; text-transform: uppercase; }
.todo { background: var(--signal-wash); border-inline-start: 3px solid var(--signal); padding: .8rem 1rem; font-size: .88rem; }