/* electricgrid.eu — site styles
   Dark-first. Tokens per docs/SPEC-UI.md. System fonts only, zero third-party assets. */

:root {
  /* --- surfaces & ink (dark = default) --- */
  --page: #0d0d0d;
  --surface: #1a1a19;
  --surface-2: #212120;
  --ink: #ffffff;
  --ink-2: #c3c2b7;
  --muted: #898781;
  --gridline: #2c2c2a;
  --baseline: #383835;
  --ring: rgba(255, 255, 255, 0.10);

  /* --- categorical series (FIXED order, never cycled) --- */
  --cat-1: #3987e5; /* blue */
  --cat-2: #d95926; /* orange */
  --cat-3: #199e70; /* aqua */
  --cat-4: #c98500; /* yellow */
  --cat-5: #d55181; /* magenta */
  --cat-6: #008300; /* green */
  --cat-7: #9085e9; /* violet */
  --cat-8: #e66767; /* red */

  /* --- status (hero + badges only; never a series colour) --- */
  --st-good: #0ca30c;
  --st-warning: #fab219;
  --st-serious: #ec835a;
  --st-critical: #d03b3b;

  /* --- water sequential blue ramp --- */
  --w-100: #cde2fb;
  --w-200: #a8caf6;
  --w-300: #7fb0ef;
  --w-400: #5794e4;
  --w-500: #3272c6;
  --w-600: #1c5199;
  --w-700: #0d366b;

  --focus: #8ab8f2;
  --radius: 12px;
  --gap: 16px;
  --maxw: 1180px;
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue",
          Arial, "Noto Sans", "Liberation Sans", sans-serif;
}

@media (prefers-color-scheme: light) {
  :root {
    --page: #f9f9f7;
    --surface: #fcfcfb;
    --surface-2: #f2f2ee;
    --ink: #0b0b0b;
    --ink-2: #52514e;
    --muted: #6d6b66;
    --gridline: #e1e0d9;
    --baseline: #cbc9c0;
    --ring: rgba(0, 0, 0, 0.12);

    --cat-1: #2a78d6;
    --cat-2: #eb6834;
    --cat-3: #1baf7a;
    --cat-4: #eda100;
    --cat-5: #e87ba4;
    --cat-6: #008300;
    --cat-7: #4a3aa7;
    --cat-8: #e34948;

    --focus: #1f5fb0;
  }
}

*, *::before, *::after { box-sizing: border-box; }

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

body {
  margin: 0;
  background: var(--page);
  color: var(--ink);
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.5;
  overflow-wrap: break-word;
}

h1, h2, h3 { line-height: 1.25; margin: 0; font-weight: 650; }

a { color: var(--cat-1); }
a:hover { color: var(--ink); }

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

:focus-visible {
  outline: 2px solid var(--focus);
  outline-offset: 2px;
  border-radius: 4px;
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--surface);
  color: var(--ink);
  padding: 12px 16px;
  z-index: 50;
  border-radius: 0 0 var(--radius) 0;
}
.skip-link:focus { left: 0; }

.wrap {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 16px;
}

/* ------------------------------------------------------------------ header */
.site-header {
  border-bottom: 1px solid var(--gridline);
  background: var(--page);
}
.site-header .wrap {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 16px;
  padding-top: 14px;
  padding-bottom: 14px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: inherit;
  min-height: 44px;
}
.brand svg { flex: none; }
.brand-name {
  font-size: 1.15rem;
  font-weight: 700;
  letter-spacing: -0.01em;
}
.brand-tagline {
  color: var(--ink-2);
  font-size: 0.875rem;
  flex: 1 1 100%;
  order: 3;
}
.header-actions {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 8px;
}

.btn {
  font: inherit;
  font-size: 0.875rem;
  color: var(--ink);
  background: var(--surface);
  border: 1px solid var(--ring);
  border-radius: 999px;
  padding: 10px 14px;
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
  text-decoration: none;
}
.btn:hover { background: var(--surface-2); border-color: var(--baseline); color: var(--ink); }
.btn-sm { min-height: 36px; padding: 6px 12px; font-size: 0.8125rem; }

.nav-links {
  display: flex;
  gap: 4px;
  flex-wrap: wrap;
}
.nav-links a {
  color: var(--ink-2);
  text-decoration: none;
  font-size: 0.875rem;
  padding: 10px 10px;
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  border-radius: 8px;
}
.nav-links a:hover { color: var(--ink); background: var(--surface); }
.nav-links a[aria-current="page"] { color: var(--ink); font-weight: 600; }

/* -------------------------------------------------------------- status hero */
main { padding: 20px 0 8px; }

.hero {
  background: var(--surface);
  border: 1px solid var(--ring);
  border-radius: var(--radius);
  padding: 18px;
  margin-bottom: var(--gap);
}
.hero-main {
  display: flex;
  gap: 16px;
  align-items: flex-start;
}
.hero-light { flex: none; }
.hero-text { min-width: 0; }
.hero-kicker {
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 0.6875rem;
  color: var(--muted);
  margin: 0 0 2px;
}
.hero-headline {
  font-size: clamp(1.35rem, 5vw, 1.9rem);
  margin: 0 0 2px;
}
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.8125rem;
  font-weight: 650;
  border-radius: 999px;
  padding: 3px 10px 3px 8px;
  border: 1px solid currentColor;
  margin-bottom: 6px;
}
.hero-note {
  color: var(--ink-2);
  font-size: 0.9375rem;
  margin: 6px 0 0;
}

.hero-figs {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 10px;
  margin-top: 16px;
}
.fig {
  background: var(--surface-2);
  border-radius: 10px;
  padding: 10px 12px;
  border: 1px solid var(--ring);
}
.fig-label {
  font-size: 0.75rem;
  color: var(--muted);
  display: block;
}
.fig-value {
  font-size: 1.4rem;
  font-weight: 650;
  font-variant-numeric: tabular-nums;
  display: block;
  line-height: 1.2;
}
.fig-value.is-empty { color: var(--muted); font-size: 1rem; font-weight: 500; }
.fig-unit { font-size: 0.9rem; font-weight: 500; color: var(--ink-2); }
.fig-ts {
  font-size: 0.75rem;
  color: var(--muted);
  display: block;
  font-variant-numeric: tabular-nums;
}

/* restriction tiers */
.tiers {
  margin-top: 16px;
  border-top: 1px solid var(--gridline);
  padding-top: 12px;
}
.tiers-label {
  font-size: 0.75rem;
  color: var(--muted);
  display: block;
  margin-bottom: 6px;
}
.tier-row {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  padding: 0;
  margin: 0;
  list-style: none;
}
.tier {
  font-size: 0.75rem;
  border: 1px solid var(--gridline);
  color: var(--muted);
  background: transparent;
  border-radius: 999px;
  padding: 4px 10px;
  font-variant-numeric: tabular-nums;
}
.tier.is-active {
  color: var(--page);
  background: var(--st-critical);
  border-color: var(--st-critical);
  font-weight: 650;
}
.tiers-none { font-size: 0.8125rem; color: var(--ink-2); margin: 8px 0 0; }

/* an operator statement reads differently from our own derived sentence */
.hero-note.is-official {
  border-inline-start: 3px solid var(--muted);
  padding-inline-start: 10px;
  color: var(--ink);
}

/* ------------------------------------------------- declared answer chip
   (Danube card). Colour never carries the meaning on its own: the chip is
   always icon + label + colour, with the operator's sentence underneath. */
.answer {
  border-inline-start: 3px solid var(--muted);
  background: var(--surface-2);
  border-radius: 0 10px 10px 0;
  padding: 10px 12px;
  margin: 0 0 12px;
}
.answer[hidden] { display: none; }
.answer-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.8125rem;
  font-weight: 650;
}
.answer-note {
  margin: 4px 0 0;
  font-size: 0.9375rem;
  line-height: 1.45;
  color: var(--ink);
}

/* ------------------------------------------------------------------- cards */
.grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--gap);
}

.card {
  background: var(--surface);
  border: 1px solid var(--ring);
  border-radius: var(--radius);
  padding: 16px;
  min-width: 0;
  scroll-margin-top: 16px;
}
.card:target { border-color: var(--cat-1); }

.card-head {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  margin-bottom: 4px;
}
.card-title { font-size: 1.05rem; flex: 1 1 auto; min-width: 0; }
.card-desc {
  color: var(--ink-2);
  font-size: 0.875rem;
  margin: 0 0 12px;
}
.card-foot {
  margin-top: 12px;
  padding-top: 10px;
  border-top: 1px solid var(--gridline);
  display: flex;
  flex-wrap: wrap;
  gap: 6px 12px;
  align-items: center;
  justify-content: space-between;
}
.src-line {
  font-size: 0.75rem;
  color: var(--muted);
  font-variant-numeric: tabular-nums;
  margin: 0;
}
.src-line a { color: var(--ink-2); }

/* contextual fact subline — sits between the chart and the source line */
.card-context {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  margin: 12px 0 0;
  font-size: 0.875rem;
  line-height: 1.45;
  color: var(--ink-2);
}
.card-context[hidden] { display: none; }
.ctx-icon { flex: none; color: var(--muted); margin-top: 2px; }

/* ------------------------------------------------ educational accordion */
.explain-item { border-top: 1px solid var(--gridline); }
.explain-item:first-of-type { border-top: 0; }
.explain-item > summary {
  display: flex;
  align-items: center;
  gap: 10px;
  min-height: 44px;
  padding: 10px 2px;
  cursor: pointer;
  font-weight: 650;
  color: var(--ink);
  list-style: none;
}
.explain-item > summary::-webkit-details-marker { display: none; }
.explain-item > summary::marker { content: ''; }
.explain-chevron { flex: none; color: var(--muted); transition: transform 160ms ease; }
.explain-item[open] > summary .explain-chevron { transform: rotate(90deg); }
.explain-item > p {
  margin: 0 0 14px;
  padding-left: 26px;
  max-width: 68ch;
  color: var(--ink-2);
  font-size: 0.9375rem;
}

.chart-unit {
  font-size: 0.75rem;
  color: var(--muted);
  text-align: right;
  margin: 0 0 2px;
}

.chart {
  width: 100%;
  height: 260px;
  min-width: 0;
}

/* empty / stale states */
.state {
  border: 1px dashed var(--baseline);
  border-radius: 10px;
  background: var(--surface-2);
  padding: 20px 16px;
  text-align: center;
  color: var(--ink-2);
  font-size: 0.9375rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  min-height: 120px;
  justify-content: center;
}
.state-title { font-weight: 650; color: var(--ink); }
.state small { color: var(--muted); font-variant-numeric: tabular-nums; }
.chart.state { height: 260px; }

.legend {
  display: flex;
  flex-wrap: wrap;
  gap: 4px 14px;
  margin: 10px 0 0;
  padding: 0;
  list-style: none;
  font-size: 0.75rem;
  color: var(--ink-2);
}
.legend li { display: flex; align-items: center; gap: 6px; }
.swatch {
  width: 12px; height: 12px; border-radius: 3px; flex: none;
  display: inline-block;
}
.swatch.line { height: 0; border-top: 2px solid currentColor; border-radius: 0; }
.swatch.dash { height: 0; border-top: 2px dashed currentColor; border-radius: 0; }

/* ------------------------------------------------------------- share menu */
.share { position: relative; flex: none; }
.share-menu {
  position: absolute;
  right: 0;
  top: calc(100% + 6px);
  z-index: 20;
  background: var(--surface-2);
  border: 1px solid var(--baseline);
  border-radius: 10px;
  padding: 6px;
  min-width: 210px;
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.45);
}
.share-menu[hidden] { display: none; }
.share-menu ul { list-style: none; margin: 0; padding: 0; }
.share-menu a, .share-menu button {
  display: flex;
  align-items: center;
  width: 100%;
  min-height: 44px;
  padding: 8px 10px;
  gap: 10px;
  border: 0;
  background: none;
  color: var(--ink);
  font: inherit;
  font-size: 0.875rem;
  text-decoration: none;
  border-radius: 8px;
  cursor: pointer;
  text-align: left;
}
.share-menu a:hover, .share-menu button:hover { background: var(--surface); }
.share-status {
  font-size: 0.75rem;
  color: var(--ink-2);
  padding: 4px 10px 6px;
  margin: 0;
}

/* ------------------------------------------------------------ danube module */
.danube-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}
.danube-fig { margin: 0; min-width: 0; }
.danube-fig svg { width: 100%; height: auto; display: block; }
/* keep the hand-built SVGs from scaling up so far that their labels look huge */
.danube-fig--section svg { max-width: 460px; margin: 0 auto; }
.danube-fig--forecast svg { max-width: 640px; }
.danube-fig figcaption {
  font-size: 0.8125rem;
  color: var(--ink-2);
  margin-top: 8px;
}
.danube-readout {
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 4px 10px;
  margin-bottom: 8px;
}
.danube-value {
  font-size: 2.1rem;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  line-height: 1;
}
.danube-value.is-empty { font-size: 1.05rem; font-weight: 600; color: var(--muted); }
.danube-sub { font-size: 0.8125rem; color: var(--muted); font-variant-numeric: tabular-nums; }
.subhead {
  font-size: 0.8125rem;
  font-weight: 650;
  color: var(--ink-2);
  margin: 0 0 6px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

/* -------------------------------------------------------------- price strip */
.price-toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
  margin-bottom: 12px;
}
.seg {
  display: inline-flex;
  border: 1px solid var(--ring);
  border-radius: 999px;
  padding: 3px;
  background: var(--surface-2);
}
.seg button {
  font: inherit;
  font-size: 0.8125rem;
  border: 0;
  background: none;
  color: var(--ink-2);
  border-radius: 999px;
  padding: 7px 14px;
  min-height: 38px;
  cursor: pointer;
}
.seg button[aria-pressed="true"] {
  background: var(--cat-1);
  color: #fff;
  font-weight: 650;
}
.fx-note { font-size: 0.75rem; color: var(--muted); font-variant-numeric: tabular-nums; }

.hours {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: 3px;
  list-style: none;
  margin: 0;
  padding: 0;
}
.hour {
  position: relative;
  border-radius: 5px;
  min-height: 58px;
  padding: 5px 2px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: space-between;
  border: 2px solid transparent;
  cursor: default;
}
.hour .h {
  font-size: 0.6875rem;
  font-variant-numeric: tabular-nums;
  opacity: 0.9;
}
.hour .v {
  font-size: 0.6875rem;
  font-weight: 650;
  font-variant-numeric: tabular-nums;
  line-height: 1.1;
  text-align: center;
}
.hour.is-cheap { border-color: var(--st-good); }
.hour.is-empty {
  background: var(--surface-2);
  border: 1px dashed var(--baseline);
  color: var(--muted);
}
.price-note { font-size: 0.75rem; color: var(--muted); margin: 10px 0 0; }
.cheap-note {
  font-size: 0.8125rem;
  color: var(--ink-2);
  margin: 10px 0 0;
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}
.cheap-dot {
  width: 12px; height: 12px; border: 2px solid var(--st-good);
  border-radius: 4px; flex: none;
}

/* ------------------------------------------------------------------ footer */
.site-footer {
  border-top: 1px solid var(--gridline);
  margin-top: 28px;
  padding: 24px 0 40px;
  color: var(--ink-2);
  font-size: 0.875rem;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 20px;
}
.footer-h {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--muted);
  margin: 0 0 8px;
}
.src-list { list-style: none; margin: 0; padding: 0; }
.src-list li { margin-bottom: 6px; }
.src-list .lic { color: var(--muted); font-size: 0.8125rem; }
.footer-links { display: flex; flex-wrap: wrap; gap: 4px 12px; padding: 0; margin: 0; list-style: none; }
.footer-links a { display: inline-flex; align-items: center; min-height: 44px; }
.disclaimer { color: var(--muted); font-size: 0.8125rem; margin: 16px 0 0; }
.impressum { margin: 0; }
.impressum span { display: block; }

/* ------------------------------------------------------------- prose pages */
.prose { max-width: 68ch; padding-bottom: 24px; }
.prose h1 { font-size: 1.6rem; margin-bottom: 8px; }
.prose h2 { font-size: 1.05rem; margin: 24px 0 6px; }
.prose p { color: var(--ink-2); margin: 0 0 10px; }
.prose .meta { color: var(--muted); font-size: 0.8125rem; }

/* --------------------------------------------------------------- status tbl */
.table-scroll { overflow-x: auto; }
table.status-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.875rem;
  min-width: 560px;
}
.status-table th, .status-table td {
  text-align: left;
  padding: 10px 12px;
  border-bottom: 1px solid var(--gridline);
  vertical-align: top;
}
.status-table th { color: var(--muted); font-size: 0.75rem; text-transform: uppercase; letter-spacing: 0.06em; }
.status-table td.num { font-variant-numeric: tabular-nums; white-space: nowrap; }
.pill {
  display: inline-flex; align-items: center; gap: 6px;
  font-size: 0.75rem; font-weight: 650;
  border: 1px solid currentColor; border-radius: 999px; padding: 2px 9px;
}
.err { color: var(--muted); font-size: 0.8125rem; }

.noscript-note {
  background: var(--surface);
  border: 1px solid var(--st-warning);
  border-radius: var(--radius);
  padding: 14px 16px;
  margin: 16px 0;
  color: var(--ink);
}

/* ------------------------------------------------------------- breakpoints */
/* --- narrow header: brand + actions on one row, nav and tagline below --- */
@media (max-width: 639px) {
  .header-actions { flex-wrap: wrap; justify-content: flex-end; row-gap: 4px; }
  .nav-links { order: 3; flex: 1 1 100%; justify-content: flex-start; flex-wrap: nowrap; }
  .nav-links a { padding-left: 0; padding-right: 16px; }
  .header-actions .share .btn [data-share-label] { display: none; }
  .header-actions .share .btn { padding: 10px 12px; }
}

@media (min-width: 420px) {
  .hours { grid-template-columns: repeat(8, minmax(0, 1fr)); }
}

@media (min-width: 640px) {
  .brand-tagline { order: 0; flex: 0 1 auto; padding-left: 12px; border-left: 1px solid var(--gridline); }
  .hours { grid-template-columns: repeat(12, minmax(0, 1fr)); }
  .footer-grid { grid-template-columns: 1.4fr 1fr; }
}

@media (min-width: 960px) {
  main { padding-top: 24px; }
  .grid { grid-template-columns: repeat(12, minmax(0, 1fr)); }
  .g-6 { grid-column: span 6; }
  .g-12 { grid-column: span 12; }
  .chart { height: 300px; }
  .chart.state { height: 300px; }
  .hours { grid-template-columns: repeat(24, minmax(0, 1fr)); }
  .danube-layout { grid-template-columns: minmax(0, 400px) minmax(0, 1fr); align-items: start; }
  .footer-grid { grid-template-columns: 1.3fr 1fr 1fr; }
  .hero-main { align-items: center; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
}

@media print {
  .share, .header-actions { display: none; }
}