/* Forecast France — French highway signage design system
 *
 * Same bones as weather.city, Forecast Eagle, Forecast Euro and Forecast Germany so
 * the network reads as one thing: warm paper ground, Overpass (the open
 * metric-compatible cut of FHWA Highway Gothic), and the same card/rule/shield
 * components. What changes is the identity mark, and the change is not arbitrary.
 *
 * The headline is **Route Nationale red**, and that is a deliberate break from the
 * network's habit of reaching for blue.
 *
 * France signs its motorways in blue, exactly as Germany does. So the obvious mark
 * here — an autoroute plate — would have been Forecast Germany's "A 7" with one digit
 * changed: the same rounded rectangle in the same Autobahn blue, which is no identity
 * at all. The Route Nationale plate is red, it is just as French, and it belongs to
 * the better road.
 *
 * Forecast France's mark is therefore the **RN plate reading N 7** — Paris to Menton
 * by way of Lyon and the Esterel, 996 km, the holiday road to the Riviera and the one
 * Charles Trenet put in a song. "The whole of France, top to bottom", which is the
 * same sentence the A 7 plate says for Germany.
 *
 * Amber survives as the working secondary, as it does on every site in the network.
 * It sits well against red for the same reason it sits well against blue: it is the
 * warning colour on every signage system any of these palettes is drawn from.
 *
 * `--eroad` keeps its name and its green. It is not the masthead mark here either,
 * but it is still the accent the explorer chrome is built out of, and every page in
 * the network that inherited these tokens expects the name to exist. Renaming it
 * would be a rename across five sites to change nothing on screen.
 */

:root {
  --paper: #e6e2da;
  --card: #ffffff;
  --ink: #161616;
  --ink2: #4a463e;
  /* Route Nationale red is the headline; the Eagle green is gone from this site
     entirely, and the Autobahn blue with it. */
  --sign: #c1272d;
  --sign-dk: #8f1a20;
  --sign-tx: #ffffff;
  --sign-sub: #f6d5d6;
  /* Kept as the explorer chrome accent — see the note above. */
  --eroad: #157a3f;
  --eroad-dk: #0d5429;
  /* Still blue, still named blue, and no longer the headline. These are the
     explorer chrome's second accent — the timeline rail, the active field chip — and
     they are left alone on purpose: the masthead moving to red is an identity change,
     not a licence to recolour every control on the site. */
  --blue: #0a5ca8;
  --navy: #103e7e;
  --blue-sub: #cfe2f6;
  --line: #c9c5bc;
  --line2: #e4e1d9;
  --mut: #8a867c;
  --shield-red: #c0331a;
  --amber: #f2ac14;

  /* Dark inset used for model/satellite imagery panels */
  --figure: #0a0e14;
  --figure-line: #223142;

  --font: 'Overpass', Helvetica, Arial, sans-serif;
  --mono-font: 'Overpass Mono', ui-monospace, monospace;
  --maxw: 1080px;
}

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

body {
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font);
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }
a:hover { text-decoration: underline; }

.mono { font-family: var(--mono-font); font-variant-numeric: tabular-nums; }
.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 18px; }
.wrap-wide { max-width: 1560px; margin: 0 auto; padding: 0 18px; }

/* ── thin utility bar ─────────────────────────────────── */
.util {
  background: var(--ink); color: #cfccc4; border-bottom: 3px solid var(--sign);
  position: sticky; top: 0; z-index: 100; box-shadow: 0 1px 8px rgba(0, 0, 0, .22);
}
.util .bar {
  max-width: 1560px; margin: 0 auto; padding: 0 18px;
  display: flex; align-items: center; justify-content: space-between; gap: 12px;
  min-height: 34px; flex-wrap: wrap;
}
.util .mono { font-size: 11px; letter-spacing: .06em; }
.util .lnks { display: flex; gap: 16px; flex-wrap: wrap; }
.util a { color: #e9e7e0; font-weight: 700; font-size: 11px; letter-spacing: .06em; }
.util a:hover { color: var(--sign-sub); text-decoration: none; }
.util a[aria-current="page"] { color: var(--sign-sub); }

/* ── guide sign panel ─────────────────────────────────── */
.sign {
  background: var(--sign); border-radius: 10px; color: var(--sign-tx);
  padding: 26px 24px 24px; position: relative;
  box-shadow: inset 0 0 0 4px var(--sign), inset 0 0 0 6px rgba(255, 255, 255, .9),
              0 10px 30px rgba(0, 0, 0, .16);
}
.sign a { color: #fff; }
.signhead { display: flex; align-items: center; gap: 16px; flex-wrap: wrap; }
.signhead img { width: 62px; height: 62px; flex: none; display: block; }
.word {
  font-weight: 900; font-size: clamp(28px, 5.4vw, 50px); line-height: .92;
  letter-spacing: -.02em; margin: 0;
}
.word .yl { color: var(--sign-sub); }
.tag {
  margin: 8px 0 0; font-weight: 700; font-size: clamp(13px, 2.2vw, 16px);
  color: var(--sign-sub); letter-spacing: .01em;
}

/* Route shield marker, as used on real guide signs */
.shield {
  border: 2.5px solid #fff; border-radius: 6px; padding: 5px 10px 6px;
  text-align: center; line-height: 1; flex: none; display: inline-block;
}
.shield .a { font-size: 8px; font-weight: 700; letter-spacing: .16em; color: var(--sign-sub); }
.shield .b { font-size: 20px; font-weight: 900; letter-spacing: .04em; display: block; }
.shield .c { font-size: 8px; font-weight: 700; letter-spacing: .12em; color: var(--sign-sub); }

/* Exit-style chips */
.exits { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 18px; align-items: center; }
.exits .lbl { font-size: 11px; font-weight: 700; letter-spacing: .14em; color: var(--sign-sub); }
.mm {
  background: rgba(255, 255, 255, .1); border: 1.5px solid rgba(255, 255, 255, .55);
  border-radius: 5px; padding: 6px 12px; font-family: inherit; font-weight: 700;
  font-size: 12px; letter-spacing: .03em; cursor: pointer; color: #fff;
}
.mm:hover { background: #fff; color: var(--sign); text-decoration: none; }

/* ── section rule header ──────────────────────────────── */
section { padding: 26px 0 4px; }
.rule { display: flex; align-items: center; gap: 14px; margin-bottom: 16px; }
.rule .ln {
  height: 3px; flex: 1;
  background: repeating-linear-gradient(90deg, var(--sign) 0 18px, transparent 18px 34px);
}
.rule h2 {
  margin: 0; color: var(--sign); font-size: 15px; font-weight: 900;
  text-transform: uppercase; letter-spacing: .12em; white-space: nowrap;
}
.rule .sub { color: var(--mut); font-size: 11px; font-weight: 700; letter-spacing: .06em; }

/* ── cards ────────────────────────────────────────────── */
.card-grid { display: grid; gap: 14px; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); }
.card {
  background: var(--card); border: 1px solid var(--line); border-radius: 8px;
  padding: 0; overflow: hidden; display: block; color: inherit;
  box-shadow: 0 6px 22px rgba(0, 0, 0, .08); transition: transform .14s, box-shadow .14s;
}
a.card:hover { transform: translateY(-2px); box-shadow: 0 10px 26px rgba(0, 0, 0, .13); text-decoration: none; }
.card .chead {
  background: var(--sign); color: #fff; padding: 9px 14px;
  box-shadow: inset 0 0 0 1.5px rgba(255, 255, 255, .35);
  display: flex; justify-content: space-between; align-items: center; gap: 10px;
}
.card .chead.blue { background: var(--blue); }
.card .chead .k { font-size: 10px; font-weight: 700; letter-spacing: .1em; color: var(--sign-sub); }
.card .chead.blue .k { color: var(--blue-sub); }
.card .cbody { padding: 14px; }
.card h3 { margin: 0 0 5px; font-size: 17px; font-weight: 900; letter-spacing: -.01em; }
.card p { margin: 0; color: var(--ink2); font-size: 13.5px; font-weight: 600; line-height: 1.5; }

.panel {
  background: var(--card); border: 1px solid var(--line); border-radius: 8px;
  padding: 16px; box-shadow: 0 6px 22px rgba(0, 0, 0, .08);
}

/* ── controls ─────────────────────────────────────────── */
.btn {
  cursor: pointer; border: 1px solid var(--line); background: #fff; color: var(--ink2);
  border-radius: 3px; font-family: var(--font); font-weight: 700; font-size: 11.5px;
  letter-spacing: .02em; padding: 7px 12px; line-height: 1.3;
}
.btn:hover { border-color: var(--sign); color: var(--ink); }
.btn.on, .btn[aria-pressed="true"] { background: var(--blue); color: #fff; border-color: #08488a; }
.btn:disabled { opacity: .5; cursor: default; }

/* Two questions, two signs. A field button lit blue and a place button lit green is
   the site's own signage distinction — the same one the guide sign and the exit sign
   make — and it survives the move to the shared explorer chrome, which knows only that
   both are `.btn.on`. Field and place are the two controls a reader uses constantly and
   the two it is most annoying to confuse, so they are told apart by colour and not only
   by position. */
.field-btn.on { background: var(--sign); color: #fff; border-color: var(--sign-dk); }
.sector-btn.on, .region-btn.on { background: var(--eroad); color: #fff; border-color: var(--eroad-dk); }
.btn-go { background: var(--blue); color: #fff; border-color: #08488a; font-weight: 900; letter-spacing: .06em; }
.btn-go:hover { background: #0b6bc4; color: #fff; }

select, input[type="text"], input[type="search"] {
  background: #fff; border: 1px solid var(--line); color: var(--ink);
  border-radius: 3px; padding: 6px 9px; font-family: var(--font);
  font-weight: 700; font-size: 12px;
}
select:focus, input:focus, .btn:focus-visible { outline: 2px solid var(--blue); outline-offset: 1px; }

label { font-size: 9.5px; font-weight: 700; letter-spacing: .1em; text-transform: uppercase; color: var(--mut); }

/* ── timeline ─────────────────────────────────────────────
   Transport, scrubber and a UTC tick strip, in one card under the map. Shared by
   every model viewer (see assets/maptimeline.js), because a forecast loop is a
   forecast loop whether the frames are RRFS quarter-hours or NDFD forecast days.

   The range is index-based, so every frame gets equal width and the thumb always
   lands on one, and ticks are drawn on frames rather than at arbitrary clock times.
   Labels therefore thin out across a run exactly where its cadence coarsens. */
.timeline {
  display: flex; align-items: flex-start; gap: 16px; flex-wrap: wrap;
  margin-top: 12px; background: var(--card); border: 1px solid var(--line);
  border-radius: 8px; padding: 10px 14px 9px; box-shadow: 0 6px 22px rgba(0, 0, 0, .08);
}
.tl-side { display: flex; flex-direction: column; gap: 5px; }
.tl-lab { font-size: 9px; font-weight: 700; letter-spacing: .12em;
  text-transform: uppercase; color: var(--mut); }
.tl-transport { display: flex; align-items: center; gap: 5px; }
.tl-track { flex: 1 1 340px; min-width: 240px; display: flex; flex-direction: column; }
.tl-track input[type="range"] { width: 100%; margin: 0; accent-color: var(--sign); }
/* Inset by half a thumb so the first and last ticks sit under the thumb's travel,
   not under the ends of the groove the thumb never reaches. */
.tl-ticks { position: relative; height: 23px; margin: 3px 9px 0; pointer-events: none; }
.tl-ticks .tk { position: absolute; top: 0; transform: translateX(-50%);
  display: flex; flex-direction: column; align-items: center; }
.tl-ticks .tk.at-start { transform: translateX(-2px); align-items: flex-start; }
.tl-ticks .tk.at-end { transform: translateX(calc(-100% + 2px)); align-items: flex-end; }
.tl-ticks .tk i { width: 1px; height: 5px; background: var(--line); display: block; }
.tl-ticks .tk span { font: 700 8.5px var(--mono-font); color: var(--mut);
  white-space: nowrap; line-height: 1; margin-top: 3px; letter-spacing: .02em; }
/* The tick that opens each forecast day carries the date and the signage green;
   the hours within that day are hairlines. */
.tl-ticks .tk.day i { height: 9px; width: 2px; background: var(--sign); }
.tl-ticks .tk.day span { color: var(--ink2); font-weight: 800; }
/* Buffer fill. Sits between the scrubber and the tick strip, so the thing that says
   "the loop is ready" is directly under the thing you drag. It fades out once full
   rather than staying as chrome nobody needs. */
.tl-buffer { height: 2px; margin: 2px 9px 0; border-radius: 2px; background: var(--line2);
  overflow: hidden; transition: opacity .4s ease .3s; }
.tl-buffer::before { content: ""; display: block; height: 100%; width: var(--pct, 0%);
  background: var(--sign); transition: width .15s linear; }
.tl-buffer.is-full { opacity: 0; }
.tl-ends { display: flex; justify-content: space-between; gap: 10px;
  font: 700 9.5px var(--mono-font); color: var(--mut); letter-spacing: .02em; }
.tl-count { font: 900 13px var(--mono-font); color: var(--ink); }
.tl-hint { margin-top: 7px; font-size: 11px; font-weight: 700; color: var(--mut); }

/* ── buffer policy chrome ──────────────────────────────────
   New with the converged maptimeline.js. The buffer bar's dashed tail is the part of
   the run deliberately not fetched (see Timeline.buffer); LOAD ALL beside the frame
   counter fetches it, and says what that costs. The button is created by the module,
   so there is no markup for it here — only these rules. */
.tl-buffer { position: relative; }
.tl-buffer.is-held::after {
  content: ""; position: absolute; right: 0; top: 0; height: 100%; width: var(--held, 0%);
  background: repeating-linear-gradient(90deg, var(--line) 0 3px, transparent 3px 6px);
}
.tl-load { font-size: 10px; padding: 4px 8px; margin-top: 4px; letter-spacing: .06em;
           font-family: var(--mono-font); white-space: nowrap; }
.tl-load:hover { border-color: var(--sign); color: var(--sign); }


/* Segmented control — the speed menu, and anything else that is one choice of a few */
.seg { display: flex; }
.seg button { font: 700 11px var(--mono-font); background: var(--card); color: var(--ink2);
  border: 1px solid var(--line); border-left-width: 0; padding: 5px 8px; cursor: pointer; }
.seg button:first-child { border-left-width: 1px; border-radius: 4px 0 0 4px; }
.seg button:last-child { border-radius: 0 4px 4px 0; }
.seg button:hover { color: var(--ink); }
.seg button.on { background: var(--sign); color: #fff; border-color: var(--sign); }
.seg button:disabled { cursor: not-allowed; }
/* A segment the active model or cycle cannot drive at all. Greyed as a block rather
   than hidden: a control that quietly vanishes reads as a bug, one that is greyed out
   reads as an answer, and a control strip that changes length as you switch models is
   disorienting. */
.seg.unavailable { opacity: .35; }
.seg.unavailable button { cursor: not-allowed; text-decoration: line-through;
  text-decoration-thickness: 1px; }

/* ── misc ─────────────────────────────────────────────── */
.badge {
  display: inline-block; padding: 3px 9px; border-radius: 3px;
  font-size: 10px; font-weight: 900; letter-spacing: .08em; text-transform: uppercase;
}
.badge-live { background: var(--sign); color: #fff; }
.badge-new { background: var(--shield-red); color: #fff; }
.badge-soon { background: #efece5; color: var(--mut); border: 1px solid var(--line); }
/* Experimental: the signage amber of a European hazard board, which is exactly the
   register wanted — this is not "coming soon" (that is `badge-soon`, and it is grey
   because nothing is being claimed yet) and not "live" either. Dark ink on amber
   rather than white, because amber is a light ground and the pair has to stay
   legible next to a page title. */
.badge-exp { background: var(--amber); color: #3a2a00; }

/* An experimental model's chip — the Mercator viewer's Model picker and the polar
 * explorer's, which use `.field-btn` and `.sector-btn` respectively, so this keys off
 * the `.btn` both share. It lives here rather than in explorer.css because polar.html
 * loads only this stylesheet, and a marking that appears on one page and not the other
 * is worse than none: a reader would reasonably conclude the unmarked one is vetted.
 *
 * A dotted underline rather than a colour or a badge: the chips sit in a row where
 * colour already means "this is the one you are looking at", and a badge would make the
 * row reflow. Dotted is the long-standing typographic convention for "there is a caveat
 * here", and it survives the `.on` state — which matters, because the warning is most
 * needed on the model actually being drawn, not least. */
.btn.experimental, .lseg.experimental {
  text-decoration: underline dotted currentColor 1.5px; text-underline-offset: 3px;
}

.dim { color: var(--ink2); }
.faint { color: var(--mut); }

.site-footer {
  border-top: 3px solid var(--sign); margin-top: 44px; padding: 18px 0 34px;
  color: var(--ink2); font-size: 12px; font-weight: 600; background: #ddd8ce;
}
.site-footer a { color: var(--navy); font-weight: 800; }

.skip {
  position: absolute; left: -9999px; top: 0; background: var(--sign); color: #fff;
  padding: 9px 14px; z-index: 200; font-weight: 800;
}
.skip:focus { left: 0; }

@media (prefers-reduced-motion: reduce) {
  * { animation-duration: .01ms !important; transition-duration: .01ms !important; }
}

/* ── wind overlay and its options ─────────────────────────────
   The overlay is its own canvas above the map, because a streamline animation
   composites frame to frame and must not be cleared by MapLibre's own redraw. */
#wind-overlay { position: absolute; inset: 0; z-index: 4; pointer-events: none; }

/* The `hidden` attribute is a promise the HTML makes, and a layout rule as ordinary as
   `.toolbar .group > div { display: flex }` outranks it on specificity and quietly
   breaks it. Restore it once, globally, rather than per component. */
[hidden] { display: none !important; }

/* Sub-controls of the wind mode segment, styled as subordinate to it: indented under a
   rule, smaller labels, and absent outright when the mode has nothing for them. */
.wind-opts { display: flex; flex-direction: column; gap: 5px; margin-top: 6px;
             padding-left: 9px; border-left: 2px solid var(--line2, var(--line)); }
.wind-opt { display: flex; align-items: center; justify-content: space-between; gap: 8px; }
.wind-opt label { font-size: 9px; letter-spacing: .09em; }
.wind-opt select { padding: 3px 5px; font-size: 11px; font-weight: 700; min-width: 92px; }