/* ============================================================
   HOUSE CIRCUIT — CORE
   Tokens, base, type, buttons, header, menu, footer, reveals.
   Concept "Live Wire": one signal line runs through the site; each
   section is a stop on the circuit, labelled by its title.
============================================================ */

:root {
  /* Surfaces */
  --ink: #050706;
  --ink-2: #0a0d0b;
  --ink-3: #111612;
  --ink-4: #182019;
  --line: rgba(214, 255, 226, 0.1);
  --line-2: rgba(214, 255, 226, 0.2);

  /* Text */
  --text: #e9f3ec;
  --text-2: #a7bbae;
  --text-3: #6f8577;

  /* Signal (brand) + status accent */
  --signal: #39ff7f;
  --signal-ink: #021408;
  --signal-glow: rgba(57, 255, 127, 0.45);
  --signal-soft: rgba(57, 255, 127, 0.1);
  --amber: #ffb627;
  --danger: #ff5a5f;

  /* Type */
  --f-display: 'Big Shoulders Display', 'Arial Narrow', Impact, sans-serif;
  --f-body: 'Instrument Sans', system-ui, -apple-system, 'Segoe UI', sans-serif;
  --f-mono: 'IBM Plex Mono', ui-monospace, 'SFMono-Regular', Consolas, monospace;

  --fs-label: 12px;
  --fs-small: 14px;
  --fs-body: clamp(16px, 0.35vw + 14.6px, 18px);
  --fs-lead: clamp(19px, 0.8vw + 13px, 26px);
  --fs-h3: clamp(26px, 1.6vw + 14px, 40px);
  --fs-display: clamp(48px, min(6.6vw, 11.5svh), 124px);

  /* Layout */
  --gutter: clamp(18px, 4vw, 64px);
  --maxw: 1480px;
  --header-h: 68px;
  --radius: 2px;

  /* Motion */
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-in-out: cubic-bezier(0.65, 0, 0.35, 1);
  --t-fast: 160ms;
  --t-mid: 320ms;
  --t-slow: 900ms;
}

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

html {
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
  scroll-padding-top: calc(var(--header-h) + 16px);
  background: var(--ink);
}

body {
  margin: 0;
  min-height: 100vh;
  background: var(--ink);
  color: var(--text-2);
  font-family: var(--f-body);
  font-size: var(--fs-body);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;   /* fallback: browsers without clip (Safari < 16) */
  overflow-x: clip;
}

h1, h2, h3, h4, p, ul, ol, figure, blockquote, dl, dd { margin: 0; }
ul, ol { padding: 0; list-style: none; }
img, video, svg, canvas { display: block; max-width: 100%; }
img { height: auto; }
button, input, textarea, select { font: inherit; color: inherit; }
button { cursor: pointer; }
a { color: inherit; text-decoration: none; }

::selection { background: var(--signal); color: var(--signal-ink); }

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

html.is-locked { overflow: hidden; }

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

.skip-link {
  position: fixed;
  left: 16px;
  top: -60px;
  z-index: 200;
  padding: 10px 16px;
  background: var(--signal);
  color: var(--signal-ink);
  font-weight: 600;
  transition: top var(--t-fast);
}
.skip-link:focus { top: 12px; }

.mono { font-family: var(--f-mono); }

/* ------------------------------------------------------------
   TYPE
------------------------------------------------------------ */
.display {
  font-family: var(--f-display);
  font-weight: 900;
  font-size: var(--fs-display);
  line-height: 0.94;
  letter-spacing: -0.005em;
  text-transform: uppercase;
  color: var(--text);
}

.h3 {
  font-family: var(--f-display);
  font-weight: 800;
  font-size: var(--fs-h3);
  line-height: 1.05;
  text-transform: uppercase;
  color: var(--text);
}

.hl { color: var(--signal); }

.lead {
  font-size: var(--fs-lead);
  line-height: 1.5;
  color: var(--text);
  letter-spacing: -0.01em;
}

/* Mono data label: section labels, status chips, meta rows */
.label {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--f-mono);
  font-size: var(--fs-label);
  font-weight: 500;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--text-3);
}

.dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--signal);
  box-shadow: 0 0 10px var(--signal-glow);
  flex-shrink: 0;
}
.dot--live { background: var(--amber); box-shadow: 0 0 10px rgba(255, 182, 39, 0.6); }
@media (prefers-reduced-motion: no-preference) {
  .dot--pulse { animation: dot-pulse 1.8s ease-in-out infinite; }
}
@keyframes dot-pulse {
  50% { opacity: 0.35; }
}
/* Endless animations pause while off screen (site.js adds .is-offscreen
   to the marquees and pulsing dots): a running animation makes the
   browser restyle every frame, even where nobody can see it. */
.is-offscreen,
.is-offscreen * { animation-play-state: paused !important; }

/* ------------------------------------------------------------
   LAYOUT HELPERS
------------------------------------------------------------ */
.wrap {
  width: 100%;
  max-width: var(--maxw);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.section {
  position: relative;
  padding-block: clamp(64px, 10vh, 120px);
}

/* Section head: numbered stop + display title (+ optional aside) */
.sec-head {
  display: grid;
  gap: clamp(12px, 1.8vh, 20px);
  margin-bottom: clamp(28px, 4.5vh, 52px);
}
@media (min-width: 960px) {
  .sec-head--split {
    grid-template-columns: minmax(0, 1fr) minmax(280px, 0.5fr);
    align-items: end;
    column-gap: clamp(32px, 5vw, 96px);
  }
}
.sec-head .sec-aside { max-width: 44ch; }

/* Section label: a short signal line, then the title ("—— Archive"). */
.stop {
  display: inline-flex;
  align-items: center;
  gap: 14px;
  font-family: var(--f-mono);
  font-size: var(--fs-label);
  font-weight: 500;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--text-2);
}
.stop::before {
  content: '';
  width: clamp(24px, 3vw, 48px);
  height: 1px;
  background: var(--signal);
  box-shadow: 0 0 8px var(--signal-glow);
}

/* ------------------------------------------------------------
   BUTTONS
------------------------------------------------------------ */
.btn {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-height: 50px;
  padding: 0 24px;
  border: 1px solid transparent;
  border-radius: var(--radius);
  background: none;
  font-family: var(--f-mono);
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  white-space: nowrap;
  isolation: isolate;
  overflow: hidden;
  transition:
    color var(--t-mid) var(--ease-out),
    border-color var(--t-mid) var(--ease-out),
    background-color var(--t-mid) var(--ease-out),
    box-shadow var(--t-mid) var(--ease-out),
    transform var(--t-fast) var(--ease-out);
}
.btn:active { transform: translateY(1px); }
.btn-sm { min-height: 40px; padding: 0 16px; font-size: 12px; }

/* Signal: solid green; hover wipes in a brighter band from the left. */
.btn-signal {
  background: var(--signal);
  color: var(--signal-ink);
  box-shadow: 0 0 0 0 var(--signal-glow);
}
.btn-signal::before {
  content: '';
  position: absolute;
  inset: 0;
  z-index: -1;
  background: #b6ffd0;
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--t-mid) var(--ease-out);
}
.btn-signal:hover { box-shadow: 0 0 28px var(--signal-glow); }
.btn-signal:hover::before { transform: scaleX(1); }

.btn-ghost {
  border-color: var(--line-2);
  color: var(--text);
}
.btn-ghost:hover {
  border-color: var(--signal);
  color: var(--signal);
  background: var(--signal-soft);
}

/* Very narrow screens: long labels wrap instead of overflowing. */
@media (max-width: 420px) {
  .btn {
    max-width: 100%;
    white-space: normal;
    text-align: center;
    line-height: 1.3;
    padding-block: 10px;
  }
}

.btn[disabled],
.btn[aria-busy="true"] { opacity: 0.6; pointer-events: none; }

/* Inline text link with a drawn underline */
/* A real underline (not a 1px background strip, which Firefox can snap
   away when the link's height lands on a fractional pixel). */
.link {
  color: var(--text);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 0.32em;
  transition: color var(--t-fast);
}
.link:hover { color: var(--signal); }

/* ------------------------------------------------------------
   HEADER
------------------------------------------------------------ */
.site-header {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 100;
  height: var(--header-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding-inline: var(--gutter);
  border-bottom: 1px solid transparent;
  transition:
    transform var(--t-mid) var(--ease-out),
    background-color var(--t-mid) var(--ease-out),
    border-color var(--t-mid) var(--ease-out);
}
.site-header.is-scrolled {
  background: rgba(5, 7, 6, 0.94);
  border-bottom-color: var(--line);
}
/* The glass blur only where it's cheap (desktop GPUs with a mouse);
   phones get the near-solid bar, which scrolls smoother. */
@media (hover: hover) and (pointer: fine) {
  .site-header.is-scrolled {
    background: rgba(5, 7, 6, 0.82);
    -webkit-backdrop-filter: blur(14px) saturate(1.2);
    backdrop-filter: blur(14px) saturate(1.2);
  }
}
.site-header.is-hidden { transform: translateY(-100%); }
html.menu-open .site-header { transform: none; background: transparent; border-color: transparent; -webkit-backdrop-filter: none; backdrop-filter: none; }

.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  min-width: 0;
  color: var(--text);
}
.brand img { width: 48px; height: auto; }
.brand-name {
  font-family: var(--f-display);
  font-weight: 800;
  font-size: 21px;
  line-height: 1;
  letter-spacing: 0.02em;
  text-transform: uppercase;
  white-space: nowrap;
}
.brand-name em {
  font-style: normal;
  color: var(--signal);
}

.site-nav { display: none; }
.site-nav ul { display: flex; gap: clamp(20px, 3vw, 44px); }
.site-nav a {
  position: relative;
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  font-family: var(--f-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--text-2);
  transition: color var(--t-fast);
}
.site-nav a::after {
  content: '';
  position: absolute;
  left: 0;
  right: 0;
  bottom: 8px;
  height: 1px;
  background: var(--signal);
  transform: scaleX(0);
  transform-origin: right;
  transition: transform var(--t-mid) var(--ease-out);
}
.site-nav a:hover { color: var(--text); }
.site-nav a:hover::after,
.site-nav a[aria-current="page"]::after { transform: scaleX(1); transform-origin: left; }
.site-nav a[aria-current="page"] { color: var(--signal); }

.header-actions { display: flex; align-items: center; gap: 10px; }
.header-news { display: none; }

.menu-toggle {
  width: 44px;
  height: 44px;
  display: grid;
  place-items: center;
  border: 1px solid var(--line-2);
  border-radius: var(--radius);
  background: rgba(5, 7, 6, 0.6);
}
.menu-toggle-bars,
.menu-toggle-bars::before,
.menu-toggle-bars::after {
  display: block;
  width: 18px;
  height: 1.5px;
  background: var(--text);
  transition: transform var(--t-mid) var(--ease-out), opacity var(--t-fast);
}
.menu-toggle-bars { position: relative; }
.menu-toggle-bars::before,
.menu-toggle-bars::after { content: ''; position: absolute; left: 0; }
.menu-toggle-bars::before { transform: translateY(-6px); }
.menu-toggle-bars::after { transform: translateY(6px); }
html.menu-open .menu-toggle-bars { background: transparent; }
html.menu-open .menu-toggle-bars::before { transform: rotate(45deg); background: var(--signal); }
html.menu-open .menu-toggle-bars::after { transform: rotate(-45deg); background: var(--signal); }

@media (min-width: 900px) {
  .site-nav { display: block; }
  .menu-toggle { display: none; }
  .header-news { display: inline-flex; }
}
/* Phones and tablets: a bigger mark (60px, inside the 68px bar). The
   mark never shrinks; where the wordmark would crowd it (under 480px)
   the logo stands alone, since it reads House Circuit itself. */
.brand picture { flex: none; }
@media (max-width: 899px) {
  .brand { gap: 10px; }
  .brand img { width: 60px; }
}
@media (max-width: 479px) {
  .brand-name { display: none; }
}
@media (max-width: 420px) {
  .header-actions .btn-signal { padding: 0 12px; }
}

/* ------------------------------------------------------------
   MOBILE MENU
------------------------------------------------------------ */
.menu-panel {
  position: fixed;
  inset: 0;
  z-index: 90;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 32px;
  padding: calc(var(--header-h) + 5vh) var(--gutter) max(32px, env(safe-area-inset-bottom));
  background:
    radial-gradient(120% 60% at 100% 0%, rgba(57, 255, 127, 0.1), transparent 60%),
    var(--ink);
  clip-path: inset(0 0 100% 0);
  visibility: hidden;
  transition:
    clip-path 0.6s var(--ease-in-out),
    visibility 0s linear 0.6s;
}
html.menu-open .menu-panel {
  clip-path: inset(0 0 0 0);
  visibility: visible;
  transition: clip-path 0.6s var(--ease-in-out), visibility 0s;
}

.menu-links { display: grid; gap: 4px; }
.menu-links a {
  display: flex;
  align-items: baseline;
  gap: 16px;
  padding-block: 6px;
  font-family: var(--f-display);
  font-weight: 900;
  font-size: clamp(52px, 15vw, 104px);
  line-height: 1;
  text-transform: uppercase;
  color: var(--text);
}
.menu-links a[aria-current="page"] { color: var(--signal); }
.menu-foot { display: grid; gap: 12px; }

@media (min-width: 900px) {
  .menu-panel { display: none; }
}

/* ------------------------------------------------------------
   MARQUEE TAPE
------------------------------------------------------------ */
.tape {
  position: relative;
  overflow: hidden;
  background: var(--signal);
  color: var(--signal-ink);
  border-block: 1px solid var(--signal);
}
.tape-track {
  display: flex;
  width: max-content;
}
.tape-item {
  display: flex;
  align-items: center;
  gap: 28px;
  padding: 14px 14px;
  font-family: var(--f-display);
  font-weight: 900;
  font-size: clamp(22px, 2.4vw, 36px);
  line-height: 1;
  text-transform: uppercase;
  white-space: nowrap;
}
.tape-item::after {
  content: '';
  width: 12px;
  height: 12px;
  border: 2px solid currentColor;
  transform: rotate(45deg);
}
@media (prefers-reduced-motion: no-preference) {
  .tape-track { animation: tape 38s linear infinite; }
}
@keyframes tape {
  to { transform: translate3d(-50%, 0, 0); }
}

/* ------------------------------------------------------------
   FOOTER
------------------------------------------------------------ */
.site-footer {
  position: relative;
  border-top: 1px solid var(--line);
  padding: clamp(64px, 10vh, 120px) var(--gutter) 28px;
  background: var(--ink);
  overflow: hidden;
}
.footer-top {
  display: grid;
  gap: 48px;
  max-width: var(--maxw);
  margin-inline: auto;
}
@media (min-width: 820px) {
  .footer-top { grid-template-columns: minmax(0, 1.4fr) minmax(0, 0.6fr) minmax(0, 0.6fr); }
}
.footer-cta { display: grid; gap: 16px; justify-items: start; max-width: 460px; }
.footer-lead { color: var(--text); font-size: var(--fs-lead); line-height: 1.5; }
.footer-nav ul,
.footer-social ul { display: grid; gap: 6px; margin-top: 16px; }
.footer-nav a,
.footer-social a {
  display: inline-flex;
  min-height: 36px;
  align-items: center;
  color: var(--text);
  transition: color var(--t-fast);
}
.footer-nav a:hover,
.footer-social a:hover { color: var(--signal); }

.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 12px 24px;
  max-width: var(--maxw);
  margin: clamp(48px, 8vh, 88px) auto 0;
  padding-top: 20px;
  border-top: 1px solid var(--line);
  font-size: var(--fs-small);
  color: var(--text-3);
}
.footer-bottom a:hover { color: var(--signal); }

/* ------------------------------------------------------------
   FLASH MESSAGES
------------------------------------------------------------ */
.flash-stack {
  position: fixed;
  z-index: 150;
  right: var(--gutter);
  top: calc(var(--header-h) + 12px);
  display: grid;
  gap: 10px;
  max-width: min(440px, calc(100vw - 2 * var(--gutter)));
}
.flash {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 14px 16px;
  border: 1px solid var(--line-2);
  border-left: 3px solid var(--signal);
  background: rgba(10, 13, 11, 0.96);
  color: var(--text);
  font-size: var(--fs-small);
}
.flash-error { border-left-color: var(--danger); }
.flash-close {
  margin-left: auto;
  border: 0;
  background: none;
  color: var(--text-3);
  min-width: 28px;
  min-height: 28px;
}

/* ------------------------------------------------------------
   REVEALS — [data-reveal] (site.js adds .is-in by section: see
   REVEAL_AT in site.js). Hidden states only exist under
   html.motion, so no-JS / reduced motion / failed boot = visible.
   Opacity (never visibility) keeps unrevealed content focusable.
------------------------------------------------------------ */
.motion [data-reveal] {
  opacity: 0;
  transform: translate3d(0, 32px, 0);
  transition:
    opacity 0.9s var(--ease-out) var(--d, 0s),
    transform 1.1s var(--ease-out) var(--d, 0s),
    clip-path 1.1s var(--ease-out) var(--d, 0s);
}
.motion [data-reveal="fade"] { transform: none; }
.motion [data-reveal="left"] { transform: translate3d(-48px, 0, 0); }
.motion [data-reveal="rise"] { transform: translate3d(0, 64px, 0); }
.motion [data-reveal="clip"] {
  transform: none;
  clip-path: inset(0 0 100% 0);
}
.motion [data-reveal="wipe"] {
  transform: none;
  clip-path: inset(0 100% 0 0);
}
.motion [data-reveal].is-in {
  opacity: 1;
  transform: none;
  clip-path: inset(0 0 0 0);
}

/* Line-by-line headline reveal: each .line > span slides up. */
.split .line {
  display: block;
  overflow: hidden;
  padding-bottom: 0.04em;
  margin-bottom: -0.04em;
}
.split .line > span { display: block; }
.motion .split[data-reveal] { opacity: 1; transform: none; }
.motion .split[data-reveal] .line > span {
  transform: translate3d(0, 105%, 0);
  transition: transform 1.1s var(--ease-out);
  transition-delay: calc(var(--d, 0s) + var(--i, 0) * 0.09s);
}
.motion .split[data-reveal].is-in .line > span { transform: none; }

/* Browsers without small-viewport units (Safari < 15.4, Chrome < 108):
   the svh sizes again in vh, so nothing collapses or shrinks to the
   body size (home.css and photos.css carry their own). */
@supports not (height: 1svh) {
  :root { --fs-display: clamp(48px, min(6.6vw, 11.5vh), 124px); }
}

/* ------------------------------------------------------------
   LARGE SCREENS (1440p monitors, 16:10 desktops, ultrawides): the
   type, spacing and page width scale up ~1.3x so the page fills
   the screen instead of floating small in the middle.
------------------------------------------------------------ */
@media (min-width: 1800px) and (min-height: 1100px) {
  :root {
    --fs-label: 14px;
    --fs-small: 17px;
    --fs-body: 21px;
    --fs-lead: 31px;
    --fs-h3: 50px;
    --fs-display: clamp(48px, min(6.6vw, 11.5svh), 168px);
    --gutter: 88px;
    --maxw: 2100px;
    --header-h: 84px;
  }
  .btn { min-height: 60px; padding: 0 32px; font-size: 15px; }
  .btn-sm { min-height: 48px; padding: 0 20px; font-size: 14px; }
  .brand img { width: 60px; }
  .brand-name { font-size: 26px; }
  .site-nav a { font-size: 14px; }
}