/* Pulse — design tokens and primitives.

   Montserrat carries the display voice (wide, geometric, confident); Manrope
   carries everything you actually read. The neutral ramp is warm rather than
   blue-grey, so white, off-white and the well tone read as one family instead
   of three unrelated greys.

   No backdrop-filter, no blend modes, no clip-path corners, no ambient
   animation. Numbers use tabular figures; mono is reserved for axis ticks. */

:root {
  color-scheme: light;

  /* ground and surfaces — warm, and spaced far enough apart to read as steps */
  --bg: #f1eeea;
  --surface: #ffffff;
  --surface-2: #faf8f5;
  --surface-3: #ebe6e0;   /* wells, bar tracks, hover */
  --surface-4: #ded7cf;   /* pressed, stronger fills */
  --line: rgba(28, 25, 23, 0.12);
  --line-2: rgba(28, 25, 23, 0.20);

  /* ink — warm near-black, not slate */
  --ink: #1c1917;
  --ink-2: #57534e;
  --ink-3: #8a827b;

  /* accent — one, and it carries weight. Burnt sienna: close enough to the
     energy hue to stay coherent, deep enough to read as deliberate. */
  --accent: #b4471d;
  --accent-2: #93370f;
  --accent-ink: #ffffff;
  --accent-soft: rgba(180, 71, 29, 0.11);
  --accent-line: rgba(180, 71, 29, 0.42);

  /* resource semantics — the only colours allowed to encode data */
  --c-energy: #dd6a2b;
  --c-water: #2589a8;
  --c-carbon: #0e8a68;
  --c-visits: #5b62b3;
  --c-cooling: #c8941a;
  --c-heat: #8f6410;
  --c-venue: #7a6ab5;
  --c-other: #a8a09a;

  /* valence — elevated vs not. Deliberately not red/green: high resource use
     is not a moral failing, and the data does not support that reading. */
  --v-up: var(--accent);
  --v-up-soft: var(--accent-soft);
  --v-down: #6b635c;
  --v-down-soft: rgba(107, 99, 92, 0.12);

  /* spacing — every gap on the page comes from this scale */
  --sp-1: 4px;
  --sp-2: 8px;
  --sp-3: 12px;
  --sp-4: 16px;
  --sp-5: 20px;
  --sp-6: 24px;
  --sp-7: 32px;
  --sp-8: 44px;
  --gutter: var(--sp-6);   /* the one horizontal inset for page content */
  --col: 1320px;           /* the reading column the gutter centres */

  /* shape — generous radii and real separation instead of hairlines */
  --r-1: 10px;
  --r-2: 14px;
  --r-3: 18px;
  --r-4: 24px;
  --r-pill: 999px;

  --sh-1: 0 1px 2px rgba(28, 25, 23, 0.06);
  --sh-2: 0 2px 6px rgba(28, 25, 23, 0.07), 0 1px 2px rgba(28, 25, 23, 0.05);
  --sh-3: 0 10px 30px rgba(28, 25, 23, 0.11);
  --sh-4: 0 20px 50px rgba(28, 25, 23, 0.17);

  --display: "Montserrat", "Manrope", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font: "Manrope", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;

  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
  --fast: 150ms var(--ease);
  --med: 260ms var(--ease);
}

:root[data-theme="dark"] {
  color-scheme: dark;

  --bg: #13100e;
  --surface: #1c1917;
  --surface-2: #232019;
  --surface-3: #2e2823;
  --surface-4: #3b3430;
  --line: rgba(245, 241, 237, 0.12);
  --line-2: rgba(245, 241, 237, 0.22);

  --ink: #f5f1ed;
  --ink-2: #b5aca4;
  --ink-3: #857c74;

  --accent: #e2703c;
  --accent-2: #f28a56;
  /* the dark accent is light enough that white text on it fails contrast */
  --accent-ink: #1a0f08;
  --accent-soft: rgba(226, 112, 60, 0.16);
  --accent-line: rgba(226, 112, 60, 0.50);

  --c-energy: #ef7d40;
  --c-water: #3aa9cc;
  --c-carbon: #22a983;
  --c-visits: #858cdb;
  --c-cooling: #e0ae35;
  --c-heat: #b1832a;
  --c-venue: #9a8ad0;
  --c-other: #857c74;

  --v-down: #9d948c;
  --v-down-soft: rgba(157, 148, 140, 0.14);

  --sh-1: 0 1px 2px rgba(0, 0, 0, 0.4);
  --sh-2: 0 2px 6px rgba(0, 0, 0, 0.45);
  --sh-3: 0 10px 30px rgba(0, 0, 0, 0.55);
  --sh-4: 0 20px 50px rgba(0, 0, 0, 0.6);
}

/* ------------------------------------------------------------------ reset */
* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 400 14px/1.6 var(--font);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  /* x-scrollbars are never acceptable; wide content scrolls inside its own box */
  overflow-x: hidden;
}

h1, h2, h3, h4 {
  margin: 0;
  font-family: var(--display);
  font-weight: 600;
  letter-spacing: -0.015em;
}
p { margin: 0; }
svg { display: block; }
img { max-width: 100%; display: block; }

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
  border-radius: 4px;
}
:focus:not(:focus-visible) { outline: none; }

.sr-only {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}

.num { font-variant-numeric: tabular-nums; }

/* ------------------------------------------------------------------ shell */
.app {
  display: grid;
  grid-template-columns: 74px minmax(0, 1fr);
  min-height: 100vh;
}

/* left icon rail — the nav pattern shared by all three reference designs */
.rail {
  position: sticky;
  top: 0;
  align-self: start;
  height: 100vh;
  background: var(--surface);
  border-right: 1px solid var(--line);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--sp-2);
  padding: var(--sp-5) 0;
  z-index: 60;
}
.rail .mark {
  width: 32px; height: 32px;
  margin-bottom: var(--sp-4);
  display: grid; place-items: center;
  padding: 0; border: 0; cursor: pointer;
  transition: transform var(--fast);
}
/* the mark is the logo, not a nav chip: it takes no tint on hover, only lift */
.rail button.mark,
.rail button.mark:hover { background: none; }
.rail .mark:hover { transform: scale(1.07); }
.rail .mark img { width: 100%; height: 100%; object-fit: contain; }

.rail button {
  position: relative;
  width: 44px; height: 44px;
  border: 0; border-radius: var(--r-2);
  background: transparent;
  color: var(--ink-3);
  display: grid; place-items: center;
  cursor: pointer;
  transition: background var(--fast), color var(--fast);
}
.rail button:hover { background: var(--surface-3); color: var(--ink); }
/* a soft tint carries the active state; a solid accent block out-shouted
   everything it was meant to be navigation for */
.rail button.on { background: var(--accent-soft); color: var(--accent); }
.rail button.on:hover { background: var(--accent-soft); color: var(--accent); }
.rail .sp { flex: 1; }

/* rail tooltip — labels on hover, so icons stay unlabelled but not opaque */
.rail button::after {
  content: attr(data-label);
  position: absolute;
  left: calc(100% + 12px);
  top: 50%;
  transform: translateY(-50%);
  background: var(--ink);
  color: var(--bg);
  font-size: 12px;
  font-weight: 600;
  padding: 7px 11px;
  border-radius: var(--r-1);
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--fast);
  box-shadow: var(--sh-2);
  z-index: 70;
}
.rail button:hover::after,
.rail button:focus-visible::after { opacity: 1; }

.main { min-width: 0; }

/* The page itself is not capped — the banner and the sticky header run edge to
   edge of the main area. The reading column is capped instead, so every block
   below the fold shares a single left edge without boxing in the hero. */
.page { padding: 0 0 var(--sp-8); }
.pane > *:not(.bleed) {
  width: min(var(--col), 100% - var(--gutter) * 2);
  margin-inline: auto;
}

/* --------------------------------------------------------------- surfaces */
.card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--r-3);
  box-shadow: var(--sh-2);
}

.panel { margin-top: var(--sp-5); }
.panel > header {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
  padding: var(--sp-5) var(--sp-6);
  border-bottom: 1px solid var(--line);
}
.panel > header h2 {
  font-size: 17px;
  font-weight: 600;
  letter-spacing: -0.01em;
  display: flex;
  align-items: center;
  gap: var(--sp-2);
}
.panel > header .sp { flex: 1; }
.panel .body { padding: var(--sp-6); }

.eyebrow {
  font-size: 12px;
  font-weight: 600;
  color: var(--ink-3);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

/* ---------------------------------------------------------------- buttons */
.btn {
  font: 600 13px/1 var(--font);
  color: var(--ink);
  background: var(--surface);
  border: 1px solid var(--line-2);
  border-radius: var(--r-1);
  padding: 11px 15px;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: var(--sp-2);
  transition: background var(--fast), border-color var(--fast), color var(--fast);
}
.btn:hover { background: var(--surface-3); border-color: var(--ink-3); }
.btn.primary {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--accent-ink);
}
.btn.primary:hover { background: var(--accent-2); border-color: var(--accent-2); }
.btn.ghost { border-color: transparent; background: transparent; color: var(--ink-2); }
.btn.ghost:hover { background: var(--surface-3); color: var(--ink); }
.btn.sm { padding: 8px 12px; font-size: 12px; }

.linkbtn {
  font: 600 13px/1 var(--font);
  color: var(--accent);
  background: none;
  border: 0;
  padding: 0;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: var(--sp-1);
}
.linkbtn:hover { color: var(--accent-2); text-decoration: underline; }

/* ------------------------------------------------------------------ chips */
.chip {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-1);
  font-size: 12px;
  font-weight: 600;
  padding: 5px 11px;
  border-radius: var(--r-pill);
  background: var(--surface-3);
  color: var(--ink-2);
  white-space: nowrap;
}
.chip.up { background: var(--v-up-soft); color: var(--accent); }
.chip.down { background: var(--v-down-soft); color: var(--v-down); }
.chip.solid { background: var(--ink); color: var(--bg); }

/* filter chips are interactive, so they look pressable */
.fchip {
  font: 600 12px/1 var(--font);
  padding: 9px 14px;
  border-radius: var(--r-pill);
  border: 1px solid var(--line-2);
  background: var(--surface);
  color: var(--ink-2);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: var(--sp-2);
  transition: all var(--fast);
}
.fchip:hover { border-color: var(--ink-3); color: var(--ink); }
.fchip.on { background: var(--accent-soft); border-color: var(--accent-line); color: var(--accent); }

/* ---------------------------------------------------------------- tooltip */
.tip {
  position: absolute;
  z-index: 80;
  pointer-events: none;
  opacity: 0;
  transform: translate(-50%, -100%);
  background: var(--surface);
  border: 1px solid var(--line-2);
  border-radius: var(--r-2);
  box-shadow: var(--sh-3);
  padding: var(--sp-3) var(--sp-4);
  font-size: 12px;
  color: var(--ink-2);
  min-width: 140px;
  transition: opacity var(--fast);
}
.tip.on { opacity: 1; }
.tip b {
  display: block; color: var(--ink); font-weight: 700;
  margin-bottom: var(--sp-2); font-family: var(--display); font-size: 12.5px;
}
.tip .r { display: flex; justify-content: space-between; gap: var(--sp-5); }
.tip .r + .r { margin-top: 3px; }
.tip .r span:last-child { color: var(--ink); font-variant-numeric: tabular-nums; font-weight: 600; }

/* info popover — the single methods surface, opened on demand */
.info {
  width: 24px; height: 24px;
  border-radius: 50%;
  border: 1px solid var(--line-2);
  background: transparent;
  color: var(--ink-3);
  display: inline-grid; place-items: center;
  cursor: pointer;
  padding: 0;
  flex: none;
  transition: all var(--fast);
}
.info:hover { color: var(--ink); border-color: var(--ink-3); background: var(--surface-3); }
.pop {
  position: absolute;
  z-index: 90;
  width: min(420px, calc(100vw - 48px));
  background: var(--surface);
  border: 1px solid var(--line-2);
  border-radius: var(--r-2);
  box-shadow: var(--sh-4);
  padding: var(--sp-5);
  font-size: 13px;
  line-height: 1.6;
  color: var(--ink-2);
}
.pop[hidden] { display: none; }
.pop h4 { font-size: 14px; margin-bottom: var(--sp-2); color: var(--ink); }
.pop dl {
  display: grid; grid-template-columns: auto 1fr;
  gap: var(--sp-1) var(--sp-4); margin: var(--sp-3) 0 0; font-size: 12.5px;
}
.pop dt { color: var(--ink-3); }
.poptbl { width: 100%; border-collapse: collapse; margin-top: var(--sp-3); font-size: 12.5px; }
.poptbl th { text-align: left; font-weight: 600; color: var(--ink-3); padding: 0 0 6px; border-bottom: 1px solid var(--line); }
.poptbl td { padding: 6px 0; color: var(--ink); border-bottom: 1px solid var(--line); }
.poptbl tr:last-child td { border-bottom: 0; }
.poptbl .num { text-align: right; font-variant-numeric: tabular-nums; }
.pop dd { margin: 0; font-variant-numeric: tabular-nums; }

/* ----------------------------------------------------- play card (shared)
   Overview shows the top two; Compare shows the whole playbook. Same card. */
.play {
  border: 1px solid var(--line);
  border-radius: var(--r-2);
  padding: var(--sp-5);
  background: var(--surface-2);
  display: flex;
  flex-direction: column;
  gap: var(--sp-4);
}
.play h3 { font-size: 16px; font-weight: 600; line-height: 1.32; }
.play .why { font-size: 13px; color: var(--ink-2); line-height: 1.6; }
.play .foot {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-2) var(--sp-5);
  font-size: 12.5px;
  color: var(--ink-3);
  margin-top: auto;
  align-items: center;
}
.play .foot .lnk {
  color: var(--accent); background: none; border: 0; padding: 0;
  cursor: pointer; font: 600 12.5px var(--font);
}
.play .foot .lnk:hover { text-decoration: underline; }

/* before/after: the current total, with the avoided share carved out of it */
.pbars { display: grid; gap: var(--sp-4); }
.pbar { display: grid; gap: var(--sp-2); }
.pbar .ph { display: flex; align-items: center; justify-content: space-between; gap: var(--sp-3); }
.pbar .pn {
  display: inline-flex; align-items: center; gap: var(--sp-2);
  font-size: 12.5px; font-weight: 600; color: var(--ink-2);
}
.pbar .pd { font-family: var(--display); font-size: 15px; font-weight: 700; }
.pbar .ptrack {
  position: relative;
  height: 12px;
  border-radius: var(--r-pill);
  background: repeating-linear-gradient(
    -45deg, var(--surface-4) 0 5px, var(--surface-3) 5px 10px);
  overflow: hidden;
}
.pbar .pfill {
  position: absolute; left: 0; top: 0; bottom: 0;
  border-radius: var(--r-pill);
  transition: width var(--med);
}
.pbar .pf {
  display: flex; justify-content: space-between; gap: var(--sp-3);
  font-size: 11.5px; color: var(--ink-3);
}
.pbar .pf b { color: var(--ink); font-weight: 700; }
.pbar .psaved { color: var(--ink-2); font-weight: 600; }

/* ------------------------------------------------- charts (shared) ------
   Overview and Compare draw the same axes, bullets and metric switcher. */
/* Bullet bar. The track spans the 11-host min..max, the tick marks the median,
   and the fill runs from the tick to this city's value — so the distribution's
   skew stays visible instead of being normalised away. */
.bullet { position: relative; height: 7px; background: var(--surface-3); border-radius: var(--r-pill); }
.bullet i {
  position: absolute; top: 0; bottom: 0;
  border-radius: var(--r-pill);
  background: var(--dc, var(--ink-3));
  transition: width var(--med), left var(--med);
}
.bullet .mid {
  position: absolute;
  top: -3px; bottom: -3px;
  width: 2px;
  margin-left: -1px;
  border-radius: 1px;
  background: var(--ink-2);
  opacity: 0.55;
  z-index: 1;   /* the tick sits before the fill in the DOM, so lift it */
}

.mswitch { display: flex; gap: var(--sp-1); flex-wrap: wrap; }
.mswitch button {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-2);
  font: 600 12.5px/1 var(--font);
  padding: 9px 13px;
  border: 1px solid var(--line-2);
  border-radius: var(--r-pill);
  background: var(--surface);
  color: var(--ink-2);
  cursor: pointer;
  transition: all var(--fast);
}
.mswitch button:hover { border-color: var(--m); color: var(--ink); }
.mswitch button.on {
  background: var(--m);
  border-color: var(--m);
  color: #fff;
}

.chartwrap { position: relative; padding: var(--sp-4) var(--sp-5) 0; }
.chartwrap svg { width: 100%; height: auto; }
.gline { stroke: var(--line); stroke-width: 1; }
.axis { stroke: var(--line-2); stroke-width: 1; }
.glabel { fill: var(--ink-3); font: 11px var(--mono); }
.serie { fill: none; stroke-width: 2.4; stroke-linejoin: round; stroke-linecap: round; }
.median { fill: none; stroke: var(--ink-2); stroke-width: 1.6; stroke-dasharray: 5 4; opacity: 0.8; }
.iqr { fill: var(--ink-3); opacity: 0.15; }
.win { fill: var(--c-cooling); opacity: 0.15; }
.chartlegend {
  display: flex;
  gap: var(--sp-5);
  flex-wrap: wrap;
  padding: var(--sp-3) var(--sp-6) var(--sp-5);
  font-size: 12.5px;
  color: var(--ink-2);
}
.chartlegend span { display: inline-flex; align-items: center; gap: var(--sp-2); }
.chartlegend i { width: 16px; height: 3px; border-radius: 2px; flex: none; }
.chartlegend i.dash { background: repeating-linear-gradient(90deg, var(--ink-2) 0 5px, transparent 5px 9px); }
.chartlegend i.box { height: 11px; border-radius: 3px; }

/* ------------------------------------------------- text primitives ---- */
.note { font-size: 12.5px; color: var(--ink-3); line-height: 1.55; }
.note b { color: var(--ink-2); }
.pre {
  font: 12px/1.6 var(--mono);
  background: var(--surface-3);
  border-radius: var(--r-1);
  padding: 12px 14px;
  overflow-x: auto;
  color: var(--ink-2);
  margin: 10px 0 0;
}
.lnk {
  color: var(--accent);
  background: none; border: 0; padding: 0;
  font: 500 inherit/1 var(--font);
  font-size: 12.5px;
  cursor: pointer;
}
.lnk:hover { text-decoration: underline; }

/* ----------------------------------------------- city picker (shared) ---
   The Overview banner and the Impact map both offer the same choice, so they
   offer it the same way: photo, rank, readiness. */
.citymenu {
  position: absolute;
  top: calc(100% + 10px);
  right: 0;
  z-index: 70;
  width: min(560px, calc(100vw - 120px));
  max-height: 62vh;
  overflow-y: auto;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--sp-2);
  padding: var(--sp-3);
  background: var(--surface);
  border: 1px solid var(--line-2);
  border-radius: var(--r-3);
  box-shadow: var(--sh-4);
}
.citymenu[hidden] { display: none; }
.cityopt {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
  padding: var(--sp-2);
  border: 1px solid transparent;
  border-radius: var(--r-2);
  background: transparent;
  cursor: pointer;
  text-align: left;
  font-family: inherit;
  transition: background var(--fast), border-color var(--fast);
}
.cityopt:hover { background: var(--surface-3); }
.cityopt.on { border-color: var(--accent); background: var(--accent-soft); }
.cityopt img {
  width: 56px; height: 42px; object-fit: cover; border-radius: var(--r-1);
  flex: none; background: var(--surface-3) center/cover;
}
.cityopt .con { display: flex; flex-direction: column; gap: 3px; min-width: 0; flex: 1; }
.cityopt .cn { font-size: 13.5px; font-weight: 600; color: var(--ink); line-height: 1.25; }
.cityopt .cr { font-size: 11.5px; color: var(--ink-3); font-variant-numeric: tabular-nums; }
.cityopt .cr b { font-weight: 700; }
.cityopt .cbar {
  height: 4px; border-radius: var(--r-pill); background: var(--surface-3);
  overflow: hidden; margin-top: 2px;
}
.cityopt .cbar i { display: block; height: 100%; border-radius: var(--r-pill); }

@media (max-width: 860px) {
  .citymenu { grid-template-columns: 1fr; width: min(340px, calc(100vw - 40px)); }
}

/* ------------------------------------------------------------------ misc */
.muted { color: var(--ink-3); }
.empty {
  color: var(--ink-3);
  font-size: 13px;
  padding: var(--sp-7);
  text-align: center;
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

@media (max-width: 900px) {
  :root { --gutter: var(--sp-4); }
  .app { grid-template-columns: 1fr; }
  .rail {
    position: fixed; bottom: 0; top: auto; left: 0; right: 0;
    height: auto; width: 100%;
    flex-direction: row; justify-content: center;
    border-right: 0; border-top: 1px solid var(--line);
    padding: var(--sp-2) 0;
  }
  .rail .mark, .rail .sp { display: none; }
  .rail button::after { display: none; }
  .page { padding-bottom: 96px; }
}