/* ==========================================================================
   Northline Heating & Cooling - module demo stylesheet

   The same identity as the Northline sample site: workwear dark, safety
   orange, condensed uppercase display type, square corners. Restated here
   rather than linked, because a demo is its own small site under the rules
   in docs/samples/README.md and must not break when the sample's stylesheet
   changes. The demo kit (/demos/_kit/kit.css) takes its colours from the
   --k-* properties set below.

   Type is self-hosted from /assets: the site's security policy allows fonts
   from this origin only.

   Theme is locked dark, as the sample's is. Contrast in that mode: chalk on
   base 14.9:1, mist on panel 6.4:1, orange on base 6.3:1, void on orange
   6.7:1.
   ========================================================================== */

@font-face{ font-family: "Barlow Condensed"; src: url("/assets/barlow-condensed-600.woff2") format("woff2"); font-weight: 600; font-display: swap; }
@font-face{ font-family: "Barlow Condensed"; src: url("/assets/barlow-condensed-700.woff2") format("woff2"); font-weight: 700; font-display: swap; }
@font-face{ font-family: "Barlow"; src: url("/assets/barlow-400.woff2") format("woff2"); font-weight: 400; font-display: swap; }
@font-face{ font-family: "Barlow"; src: url("/assets/barlow-500.woff2") format("woff2"); font-weight: 500; font-display: swap; }
@font-face{ font-family: "Barlow"; src: url("/assets/barlow-600.woff2") format("woff2"); font-weight: 600; font-display: swap; }

:root{
  --void: #0D0F12;
  --base: #14171B;
  --panel: #1B1F25;
  --panel-2: #232830;
  --rule: #2B313A;
  --rule-lit: #3E4854;
  --chalk: #E8EAED;
  --mist: #98A2AE;
  --white: #F7F8F9;
  --orange: #FF6A13;
  --orange-lift: #FF7E33;

  --display: "Barlow Condensed", "Arial Narrow", sans-serif;
  --body: "Barlow", system-ui, -apple-system, sans-serif;
  --wrap: 1240px;
  --gutter: clamp(1.25rem, 4vw, 3rem);

  --k-font: var(--body);
  --k-ink: var(--chalk);
  --k-muted: var(--mist);
  --k-bg: var(--base);
  --k-surface: var(--panel);
  --k-surface-2: var(--panel);
  --k-line: var(--rule-lit);
  --k-accent: var(--orange);
  --k-accent-ink: var(--void);
  --k-radius: 0px;
  --k-radius-control: 0px;

  color-scheme: dark;
}

*,*::before,*::after{ box-sizing: border-box; }
html{ -webkit-text-size-adjust: 100%; }
body{
  margin: 0;
  background: var(--base);
  color: var(--chalk);
  font: 400 clamp(1rem, .97rem + .16vw, 1.0625rem)/1.65 var(--body);
  overflow-x: hidden;
}
a{ color: inherit; }
::selection{ background: var(--orange); color: var(--void); }
:focus-visible{ outline: 3px solid var(--orange); outline-offset: 2px; }

.wrap{ width: 100%; max-width: var(--wrap); margin-inline: auto; padding-inline: var(--gutter); }

.skip-link{
  position: absolute; left: -9999px; top: 0; z-index: 10;
  background: var(--orange); color: var(--void);
  padding: .75rem 1.25rem;
  font: 600 .95rem/1 var(--display); letter-spacing: .08em; text-transform: uppercase;
}
.skip-link:focus{ left: 0; }

h1, h2, h3{
  margin: 0;
  font-family: var(--display);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .005em;
  line-height: .96;
  color: var(--white);
  text-wrap: balance;
}

/* --- banner and masthead -------------------------------------------------- */

.demo-banner{ background: var(--void); border-bottom: 2px solid var(--orange); font-size: .875rem; }
.demo-banner__inner{ display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: .5rem 1.5rem; padding-block: .7rem; }
.demo-banner p{ margin: 0; color: var(--mist); max-width: 92ch; }
.demo-banner strong{ color: var(--white); }
.demo-banner a,
.foot a{ display: inline-flex; align-items: center; min-height: 24px; }
.demo-banner a{ color: var(--white); font-weight: 600; white-space: nowrap; }

.masthead{ border-bottom: 2px solid var(--rule); }
.masthead__inner{ display: flex; align-items: center; justify-content: space-between; gap: 1rem; min-height: 68px; }
.mark{ display: inline-flex; align-items: center; gap: .7rem; }
.mark__bar{ width: 6px; height: 30px; background: var(--orange); }
.mark__name{ font: 700 1.65rem/1 var(--display); text-transform: uppercase; letter-spacing: .02em; color: var(--white); }
.mark__name span{ color: var(--orange); }
.mark__sub{ font: 600 .8rem/1 var(--display); text-transform: uppercase; letter-spacing: .14em; color: var(--mist); }
.masthead__cta{
  display: inline-flex; align-items: center; min-height: 44px; padding: .55rem 1rem;
  border: 2px solid var(--orange); color: var(--white); text-decoration: none;
  font: 600 .95rem/1 var(--display); letter-spacing: .08em; text-transform: uppercase;
  transition: background-color .15s ease, color .15s ease;
}
.masthead__cta:hover{ background: var(--orange); color: var(--void); }

/* --- intro ----------------------------------------------------------------- */

.intro{ padding-block: clamp(3rem, 6vw, 5rem) clamp(2rem, 4vw, 3rem); border-bottom: 2px solid var(--rule); }
.intro h1{ font-size: clamp(2.8rem, 1.6rem + 5vw, 5.6rem); max-width: 20ch; }
.intro__lede{ margin: 1.25rem 0 0; max-width: 46ch; color: var(--mist); font-size: clamp(1.05rem, 1rem + .3vw, 1.2rem); }
.intro__jump{ display: flex; flex-wrap: wrap; gap: .5rem; margin-top: 2rem; }
.intro__jump a{
  display: inline-flex; align-items: center; min-height: 44px; padding: .5rem 1rem;
  background: var(--panel); border-left: 4px solid var(--orange);
  font: 600 .95rem/1 var(--display); letter-spacing: .08em; text-transform: uppercase;
  color: var(--white); text-decoration: none;
  transition: background-color .15s ease;
}
.intro__jump a:hover{ background: var(--panel-2); }

/* --- the modules, in this identity --------------------------------------- */

.k-module + .k-module{ border-top: 2px solid var(--rule); }
.k-module__head h2{ font-size: clamp(2.1rem, 1.3rem + 3.2vw, 3.5rem); }
.k-module__summary{ font-size: 1.0625rem; }
.k-tab,
.k-control,
.k-caption{ font-family: var(--display); letter-spacing: .07em; text-transform: uppercase; }
.k-tab{ font-weight: 600; font-size: .95rem; }
.k-caption{ font-size: .85rem; font-weight: 600; }
.k-scenario__title{ font-family: var(--display); text-transform: uppercase; }

/* --- closing and footer ---------------------------------------------------- */

.closing{ background: var(--void); border-top: 2px solid var(--rule); }
.closing__inner{ display: grid; gap: 1.1rem; justify-items: start; padding-block: clamp(3.5rem, 7vw, 6rem); }
.closing h2{ font-size: clamp(2.2rem, 1.4rem + 3.6vw, 4rem); max-width: 18ch; }
.closing p{ margin: 0; max-width: 52ch; color: var(--mist); }
.closing__cta{
  display: inline-flex; align-items: center; min-height: 48px; padding: .8rem 1.4rem;
  background: var(--orange); color: var(--void); text-decoration: none;
  font: 700 1rem/1 var(--display); letter-spacing: .08em; text-transform: uppercase;
  transition: background-color .15s ease, transform .1s ease;
}
.closing__cta:hover{ background: var(--orange-lift); }
.closing__cta:active{ transform: translateY(1px); }

.foot{ border-top: 2px solid var(--rule); }
.foot__inner{ display: flex; flex-wrap: wrap; justify-content: space-between; align-items: flex-start; gap: 1rem 2rem; padding-block: 2rem 2.5rem; font-size: .875rem; color: var(--mist); }
.foot p{ margin: 0; max-width: 84ch; }
.foot a{ color: var(--white); font-weight: 600; }

@media (max-width: 767px){
  .mark__sub{ display: none; }
  .masthead__cta{ font-size: .85rem; padding: .5rem .75rem; }
}