/* ============================================================
   Canadian Energy Statistics — May 2026
   Poster hero + data explorer. One accent (amber), two typefaces
   (serif display / system sans). Cardless sections, hairlines.
   ============================================================ */

:root {
  --bg: #0b0e13;
  --bg-2: #0f131b;
  --bg-3: #141924;
  --ink: #e9edf3;
  --mut: #9aa4b2;
  --dim: #8b95a3;
  --line: rgba(233, 237, 243, 0.10);
  --line-strong: rgba(233, 237, 243, 0.22);
  --acc: #ffb224;
  --acc-soft: rgba(255, 178, 36, 0.13);
  --acc-ink: #1a1206;
  --down: #aeb9c6;
  --serif: "Iowan Old Style", "Palatino Linotype", Palatino, Georgia, "Times New Roman", serif;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Inter, "Helvetica Neue", Arial, "Noto Sans", "Liberation Sans", sans-serif;
  --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace;
  --ease: cubic-bezier(0.22, 0.68, 0.26, 1);
  --header-h: 56px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
html:focus-within { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 15px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

[hidden] { display: none !important; }

a { color: var(--acc); text-decoration: none; }
a:hover { text-decoration: underline; }

:focus-visible {
  outline: 2px solid var(--acc);
  outline-offset: 2px;
  border-radius: 3px;
}

::selection { background: rgba(255, 178, 36, 0.32); }

.wrap {
  max-width: 1180px;
  margin: 0 auto;
  padding-left: clamp(20px, 4vw, 48px);
  padding-right: clamp(20px, 4vw, 48px);
}

.kicker {
  font-family: var(--sans);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--acc);
}

/* ---------------- header ---------------- */

.site-head {
  position: sticky;
  top: 0;
  z-index: 60;
  height: var(--header-h);
  display: flex;
  align-items: center;
  border-bottom: 1px solid var(--line);
  background: rgba(11, 14, 19, 0.86);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
}

.site-head .wrap {
  width: 100%;
  display: flex;
  align-items: center;
  gap: 18px;
}

.mark {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--ink);
  font-weight: 650;
  font-size: 13.5px;
  letter-spacing: 0.01em;
  white-space: nowrap;
}
.mark .mark-sub { color: var(--mut); font-weight: 500; }
.mark:hover { text-decoration: none; color: var(--acc); }
.mark svg { display: block; }

.site-nav {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 4px;
}
.site-nav a {
  color: var(--mut);
  font-size: 13px;
  padding: 7px 10px;
  border-radius: 6px;
  white-space: nowrap;
}
.site-nav a:hover { color: var(--ink); background: var(--bg-3); text-decoration: none; }

.kbd-hint {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--dim);
  font-size: 12px;
  margin-left: 8px;
}
kbd {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--mut);
  border: 1px solid var(--line-strong);
  border-bottom-width: 2px;
  border-radius: 5px;
  padding: 1px 6px;
  background: var(--bg-2);
}

/* ---------------- hero ---------------- */

.hero {
  position: relative;
  min-height: calc(100svh - var(--header-h));
  overflow: hidden;
  border-bottom: 1px solid var(--line);
  display: flex;
  align-items: flex-end;
}

@supports not (height: 100svh) {
  .hero { min-height: calc(100vh - var(--header-h)); }
}

.hero-art {
  position: absolute;
  inset: 0;
  z-index: 0;
}
.hero-art svg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  display: block;
}

.hero-inner {
  position: relative;
  z-index: 2;
  width: 100%;
  padding-top: 64px;
  padding-bottom: clamp(24px, 4vh, 48px);
}

.hero-copy { max-width: 800px; }

.hero h1 {
  font-family: var(--serif);
  font-weight: 500;
  font-size: clamp(40px, 5.6vw, 78px);
  line-height: 1.02;
  letter-spacing: -0.015em;
  margin: 14px 0 0;
  text-wrap: balance;
}
.hero h1 .may {
  display: block;
  color: var(--acc);
  font-style: italic;
}

.hero .lede {
  color: var(--mut);
  font-size: clamp(15px, 1.5vw, 17px);
  max-width: 56ch;
  margin: 16px 0 0;
}

.hero-actions {
  margin-top: 22px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--sans);
  font-size: 13.5px;
  font-weight: 650;
  color: var(--acc-ink);
  background: var(--acc);
  border: 0;
  border-radius: 8px;
  padding: 11px 18px;
  cursor: pointer;
  text-decoration: none;
  transition: transform 0.16s var(--ease), filter 0.16s var(--ease), background-color 0.16s var(--ease);
}
.btn:hover { filter: brightness(1.07); text-decoration: none; transform: translateY(-1px); }
.btn:active { transform: translateY(0); filter: brightness(0.96); }
.btn .arr { transition: transform 0.2s var(--ease); }
.btn:hover .arr { transform: translateY(2px); }

.btn-ghost {
  color: var(--ink);
  background: transparent;
  border: 1px solid var(--line-strong);
}
.btn-ghost:hover { background: var(--bg-3); }

/* hero stats */
.hero-stats {
  margin-top: clamp(26px, 4vh, 48px);
  padding-top: 20px;
  border-top: 1px solid var(--line-strong);
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: clamp(16px, 2.4vw, 32px);
}

.stat { min-width: 0; }
.stat .v {
  font-size: clamp(21px, 2.3vw, 30px);
  font-weight: 700;
  letter-spacing: -0.01em;
  line-height: 1.1;
  color: var(--ink);
}
.stat .v em { font-style: normal; color: var(--acc); }
.stat .l {
  margin-top: 5px;
  font-size: 12px;
  font-weight: 600;
  color: var(--mut);
  letter-spacing: 0.02em;
}
.stat .n {
  margin-top: 3px;
  font-size: 11.5px;
  line-height: 1.45;
  color: var(--dim);
}

.hero-caption {
  position: absolute;
  right: clamp(16px, 3vw, 40px);
  top: 16px;
  z-index: 2;
  font-size: 10.5px;
  color: var(--dim);
  letter-spacing: 0.04em;
  text-align: right;
  pointer-events: none;
}

/* hero art animation (bars rise with a per-bar inline delay set by app.js) */
.hero-art .bar {
  transform: scaleY(0.04);
  transform-origin: bottom;
  transform-box: fill-box;
  transition: transform 1s var(--ease);
}

.hero-art .flow {
  stroke-dasharray: 3 9;
  animation: flowdrift 26s linear infinite;
}
@keyframes flowdrift {
  to { stroke-dashoffset: -600; }
}

/* entrance sequence */
.rise {
  opacity: 0;
  transform: translateY(16px);
  animation: rise 0.7s var(--ease) forwards;
}
.rise.d1 { animation-delay: 0.05s; }
.rise.d2 { animation-delay: 0.16s; }
.rise.d3 { animation-delay: 0.28s; }
.rise.d4 { animation-delay: 0.42s; }
.rise.d5 { animation-delay: 0.58s; }
@keyframes rise {
  to { opacity: 1; transform: none; }
}

/* ---------------- explorer head / search ---------------- */

.explore-head {
  /* top/bottom only: horizontal padding comes from .wrap (a shorthand here would zero it) */
  padding-top: clamp(40px, 6vh, 72px);
  padding-bottom: 8px;
}

.explore-head h2 {
  font-family: var(--serif);
  font-weight: 500;
  font-size: clamp(26px, 3.4vw, 40px);
  letter-spacing: -0.01em;
  margin: 10px 0 6px;
}

.explore-head .sub {
  color: var(--mut);
  max-width: 62ch;
  margin: 0 0 22px;
}

.search-row {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}

.search-field {
  position: relative;
  flex: 1 1 340px;
  max-width: 560px;
}
.search-field svg {
  position: absolute;
  left: 15px;
  top: 50%;
  transform: translateY(-50%);
  pointer-events: none;
  color: var(--dim);
}
#search {
  width: 100%;
  height: 52px;
  padding: 0 92px 0 44px;
  font: inherit;
  font-size: 15.5px;
  color: var(--ink);
  background: var(--bg-2);
  border: 1px solid var(--line-strong);
  border-radius: 10px;
  transition: border-color 0.18s var(--ease), box-shadow 0.18s var(--ease);
}
#search::placeholder { color: var(--dim); }
#search:focus {
  outline: none;
  border-color: var(--acc);
  box-shadow: 0 0 0 3px var(--acc-soft);
}
#search::-webkit-search-cancel-button { -webkit-appearance: none; }

.search-clear {
  position: absolute;
  right: 10px;
  top: 50%;
  transform: translateY(-50%);
  border: 0;
  background: var(--bg-3);
  color: var(--mut);
  font-size: 12px;
  font-weight: 600;
  border-radius: 6px;
  padding: 6px 10px;
  cursor: pointer;
}
.search-clear:hover { color: var(--ink); }

.search-side {
  display: flex;
  flex-direction: column;
  gap: 8px;
  min-width: 0;
}
#result-count {
  font-size: 13px;
  color: var(--mut);
  font-variant-numeric: tabular-nums;
}
#result-count strong { color: var(--ink); font-weight: 650; }

.chips { display: flex; flex-wrap: wrap; gap: 8px; }
.chip {
  border: 1px solid var(--line-strong);
  background: transparent;
  color: var(--mut);
  font: inherit;
  font-size: 12px;
  border-radius: 999px;
  padding: 5px 12px;
  cursor: pointer;
  transition: color 0.15s var(--ease), border-color 0.15s var(--ease), background-color 0.15s var(--ease);
}
.chip:hover { color: var(--acc); border-color: var(--acc); background: var(--acc-soft); }

#empty-state {
  margin-top: 18px;
  padding: 26px 0 10px;
  border-top: 1px dashed var(--line-strong);
}
#empty-state p { margin: 0 0 12px; color: var(--mut); }
#empty-state .q { color: var(--ink); font-weight: 600; overflow-wrap: anywhere; }

#toast {
  position: fixed;
  left: 50%;
  bottom: 28px;
  transform: translateX(-50%);
  z-index: 60;
  max-width: min(92vw, 560px);
  padding: 10px 18px;
  font-family: var(--sans);
  font-size: 13.5px;
  color: var(--ink);
  background: var(--panel, #14161c);
  border: 1px solid rgba(255, 178, 36, 0.45);
  border-radius: 999px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.45);
  overflow-wrap: anywhere;
}

/* ---------------- dataset sections ---------------- */

#dataset-list { padding-bottom: 8px; }

.ds {
  display: grid;
  grid-template-columns: minmax(270px, 350px) minmax(0, 1fr);
  gap: clamp(28px, 4vw, 56px);
  padding: clamp(36px, 5vh, 60px) 0;
  border-top: 1px solid var(--line);
}
.ds[hidden] { display: none; }

.ds-kicker {
  font-size: 10.5px;
  font-weight: 650;
  letter-spacing: 0.13em;
  text-transform: uppercase;
  color: var(--dim);
  margin: 0 0 10px;
}
.ds-kicker b { color: var(--acc); font-weight: 650; }

.ds h3 {
  font-family: var(--serif);
  font-weight: 500;
  font-size: clamp(21px, 2.4vw, 27px);
  line-height: 1.18;
  letter-spacing: -0.005em;
  margin: 0 0 10px;
  text-wrap: balance;
}

.ds .desc {
  color: var(--mut);
  font-size: 13.5px;
  margin: 0 0 20px;
}

.headline {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 10px 12px;
  padding: 14px 0;
  border-top: 1px solid var(--line);
}
.headline .big {
  font-size: clamp(30px, 3.4vw, 42px);
  font-weight: 750;
  letter-spacing: -0.02em;
  line-height: 1;
  color: var(--acc);
  font-variant-numeric: tabular-nums;
}
.headline .unit {
  color: var(--mut);
  font-size: 13px;
  max-width: 20ch;
  line-height: 1.35;
}
.headline .when {
  flex-basis: 100%;
  color: var(--dim);
  font-size: 11.5px;
  letter-spacing: 0.03em;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-size: 12px;
  font-weight: 700;
  border-radius: 999px;
  padding: 3px 10px;
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}
.badge.up { color: var(--acc); background: var(--acc-soft); }
.badge.down { color: var(--down); background: rgba(174, 185, 198, 0.12); }

.legend {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 16px;
  margin: 16px 0 20px;
}
.legend .key {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-size: 12px;
  color: var(--mut);
  max-width: 100%;
}
.legend .dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  flex: none;
}

.ds-foot {
  margin-top: 18px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 16px;
}
.ds-foot .src {
  font-size: 12px;
  color: var(--dim);
}
.ds-foot .src a { color: var(--mut); }

/* chart column */
.view + .view { margin-top: 30px; }
.view > h4 {
  font-size: 12px;
  font-weight: 650;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  color: var(--dim);
  margin: 0 0 10px;
}

.chart-box { position: relative; }
.chart-box svg.chart {
  display: block;
  width: 100%;
  height: auto;
}

/* chart hover affordance */
.chart .pt { opacity: 0; cursor: crosshair; }
.chart .pt:hover { opacity: 1; }
.chart .pt circle { transition: r 0.12s var(--ease); }
.chart .pt:hover circle { r: 4.5; }

/* line draw on reveal */
.reveal .draw {
  stroke-dasharray: 1;
  stroke-dashoffset: 1;
  transition: stroke-dashoffset 1.1s var(--ease) 0.15s;
}
.reveal.in .draw { stroke-dashoffset: 0; }

.reveal .grow {
  transform: scaleY(0.02);
  transform-origin: bottom;
  transform-box: fill-box;
  transition: transform 0.7s var(--ease);
}
.reveal.in .grow { transform: scaleY(1); }

/* small multiples */
.multis {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(230px, 1fr));
  gap: 22px clamp(20px, 2.6vw, 34px);
}
.mini { margin: 0; min-width: 0; }
.mini .m-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 8px;
  margin-bottom: 4px;
}
.mini .m-title {
  font-size: 12.5px;
  font-weight: 650;
  color: var(--ink);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.mini .m-val {
  font-size: 11.5px;
  color: var(--mut);
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}
.mini .m-val b { color: var(--ink); font-weight: 700; }
.mini svg { display: block; width: 100%; height: auto; }

/* ---------------- sources ---------------- */

.sources {
  border-top: 1px solid var(--line-strong);
  padding: clamp(40px, 6vh, 64px) 0 30px;
}
.sources h2 {
  font-family: var(--serif);
  font-weight: 500;
  font-size: clamp(24px, 3vw, 34px);
  margin: 8px 0 6px;
}
.sources .sub { color: var(--mut); max-width: 70ch; margin: 0 0 26px; }

.src-scroll { overflow-x: auto; -webkit-overflow-scrolling: touch; }

.src-table { width: 100%; min-width: 640px; border-collapse: collapse; font-size: 13px; }
.src-table caption {
  text-align: left;
  color: var(--dim);
  font-size: 11.5px;
  padding-bottom: 10px;
}
.src-table th {
  text-align: left;
  font-size: 10.5px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--dim);
  font-weight: 650;
  padding: 0 14px 10px 0;
  border-bottom: 1px solid var(--line-strong);
}
.src-table td {
  padding: 11px 14px 11px 0;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
  color: var(--mut);
}
.src-table td:first-child { color: var(--ink); font-weight: 550; }
.src-table a { font-family: var(--mono); font-size: 12px; }
.src-table .tag {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--dim);
}

/* ---------------- footer ---------------- */

.site-foot {
  border-top: 1px solid var(--line);
  padding: 26px 0 40px;
  color: var(--dim);
  font-size: 12px;
}
.site-foot .wrap {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 28px;
  justify-content: space-between;
}
.site-foot a { color: var(--mut); }

/* ---------------- reveal on scroll ---------------- */

.reveal {
  opacity: 0;
  transform: translateY(18px);
}
.reveal.in {
  opacity: 1;
  transform: none;
  transition: opacity 0.65s var(--ease), transform 0.65s var(--ease);
}

/* ---------------- responsive ---------------- */

@media (max-width: 960px) {
  .ds {
    grid-template-columns: 1fr;
    gap: 20px;
  }
  .hero-stats { grid-template-columns: repeat(3, 1fr); row-gap: 22px; }
  .stat:nth-child(4), .stat:nth-child(5) { display: none; }
}

@media (max-width: 700px) {
  .kbd-hint { display: none; }
  .site-nav a { padding: 7px 8px; font-size: 12.5px; }
  .mark .mark-sub { display: none; }
  .mark { font-size: 12.5px; gap: 8px; }
}

@media (max-width: 560px) {
  .hero { min-height: calc(100svh - var(--header-h)); }
  .hero-inner { padding-top: 44px; padding-bottom: 22px; }
  .hero h1 { font-size: clamp(33px, 10.5vw, 46px); }
  .hero .lede { font-size: 14px; margin-top: 12px; }
  .hero .kicker { letter-spacing: 0.1em; }
  .hero-actions { margin-top: 18px; gap: 10px; }
  .btn { padding: 10px 14px; font-size: 13px; }
  .hero-stats {
    margin-top: 22px;
    padding-top: 16px;
    grid-template-columns: repeat(2, 1fr);
    row-gap: 16px;
  }
  .stat:nth-child(3), .stat:nth-child(4), .stat:nth-child(5) { display: none; }
  .stat .v { font-size: 20px; }
  .hero-caption { display: none; }
  .headline { gap: 8px; }
  .multis { grid-template-columns: 1fr 1fr; gap: 18px 16px; }
  .search-field { flex: 1 1 100%; max-width: none; }
}

@media (max-width: 400px) {
  .multis { grid-template-columns: 1fr; }
}

/* ---------------- reduced motion ---------------- */

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .rise { animation: none; opacity: 1; transform: none; }
  .hero-art .bar { transform: none; transition: none; }
  .hero-art .flow { animation: none; }
  .reveal { opacity: 1; transform: none; }
  .reveal .draw { stroke-dasharray: none; stroke-dashoffset: 0; transition: none; }
  .reveal .grow { transform: none; transition: none; }
  .btn, .btn .arr, .chip, .search-clear { transition: none; }
}