/* ctsite.cc home page
   Idea: the floor plan of a Taiwanese apartment. Each product is a device in the home; the room of the product being read lights up in that product's brand color.
   The site has no accent color of its own; color comes only from the products. Type is Archivo (width axis: condensed for plan labels, wide for names). */

@font-face {
  font-family: "Archivo";
  src: url("fonts/archivo-latin.woff2") format("woff2");
  font-weight: 100 900;
  font-stretch: 62% 125%;
  font-display: swap;
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}

:root {
  color-scheme: light dark;
  --paper: #edf0ec;
  --floor: #f8f9f6;
  --ink: #1a201e;
  --muted: #56615c;
  --rule: #d3dad5;
  --line: #b4beb8;
  --wall: #29302d;

  --daikin: #0097e0;
  --hitachi: #d9002b;
  --panasonic: #0b62c4;
  --roborock: #e5413a;
  --mqtt: #660066;
  --dc: #5a3fd4;
  --pigeon: #d2382c;

  --font: "Archivo", -apple-system, BlinkMacSystemFont, sans-serif;
}

@media (prefers-color-scheme: dark) {
  :root {
    --paper: #0f1312;
    --floor: #171c1a;
    --ink: #e2e8e4;
    --muted: #97a39d;
    --rule: #28312d;
    --line: #3d4944;
    --wall: #c3cdc8;

    --daikin: #36b4f0;
    --hitachi: #ff4d63;
    --panasonic: #5aa7ff;
    --roborock: #ff6a5f;
    --mqtt: #d98ad9;
    --dc: #b2a0ff;
    --pigeon: #ff7a6e;
  }
}

.c-daikin { --c: var(--daikin); }
.c-hitachi { --c: var(--hitachi); }
.c-panasonic { --c: var(--panasonic); }
.c-roborock { --c: var(--roborock); }
.c-mqtt { --c: var(--mqtt); }
.c-dc { --c: var(--dc); }
.c-pigeon { --c: var(--pigeon); }

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

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

@media (prefers-reduced-motion: no-preference) {
  html { scroll-behavior: smooth; }
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font);
  font-size: 1.0625rem;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; }

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

[hidden] { display: none !important; }

.page {
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 clamp(16px, 4vw, 48px);
}

/* Header */

.top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 22px 0;
}

.mark {
  font-size: 1.25rem;
  font-weight: 800;
  font-stretch: 125%;
  letter-spacing: -0.01em;
  line-height: 1;
  text-decoration: none;
  white-space: nowrap;
}

.nav {
  display: flex;
  align-items: center;
  gap: clamp(14px, 2.5vw, 26px);
  font-size: 0.9375rem;
  line-height: 1;
}

.nav a {
  text-decoration: none;
  padding: 8px 0;
}

.nav a:hover { text-decoration: underline; text-underline-offset: 5px; text-decoration-thickness: 1.5px; }

/* Layout: one column on phones (intro, plan, list); on wide screens the plan stays put on the right */

.layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  grid-template-areas: "intro" "plan" "list";
  gap: 36px;
  padding-bottom: 72px;
}

.intro { grid-area: intro; padding-top: clamp(16px, 5vh, 64px); }
.plan-wrap { grid-area: plan; }
.list { grid-area: list; }

@media (min-width: 1000px) {
  .layout {
    grid-template-columns: minmax(0, 0.92fr) minmax(0, 1.08fr);
    grid-template-areas: "intro plan" "list plan";
    column-gap: clamp(48px, 6vw, 96px);
    row-gap: 64px;
  }
  .plan-wrap { align-self: stretch; }
  .plan-fig {
    position: sticky;
    top: 24px;
    padding-top: clamp(16px, 5vh, 64px);
  }
}

/* Intro */

h1 {
  margin: 0 0 20px;
  font-size: clamp(2rem, 1.25rem + 2.5vw, 3rem);
  font-weight: 800;
  font-stretch: 106%;
  line-height: 1.08;
  letter-spacing: -0.025em;
  text-wrap: balance;
}

.lede {
  margin: 0;
  max-width: 36em;
  color: var(--muted);
  text-wrap: pretty;
}

.lede + .lede { margin-top: 12px; }

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin: 28px 0 0;
}

.btn {
  display: inline-flex;
  align-items: center;
  min-height: 46px;
  padding: 0 18px;
  border: 1.5px solid var(--ink);
  border-radius: 6px;
  font-size: 1rem;
  font-weight: 600;
  line-height: 1.2;
  text-decoration: none;
}

.btn:hover { background: color-mix(in srgb, var(--ink) 7%, transparent); }

.btn-solid { background: var(--ink); color: var(--paper); }
.btn-solid:hover { background: color-mix(in srgb, var(--ink) 86%, var(--paper)); }

/* Floor plan */

.plan-fig { margin: 0; }

.plan {
  display: block;
  width: 100%;
  height: auto;
  max-height: calc(100vh - 150px);
  overflow: visible;
}

.plan .floor { fill: var(--floor); transition: fill 0.35s ease; }
.plan .floor.is-lit { fill: color-mix(in srgb, var(--c) 14%, var(--floor)); }

.plan .furn * { fill: none; stroke: var(--line); stroke-width: 1.2; }

.plan .walls path { fill: none; stroke: var(--wall); stroke-linecap: square; }
.plan .walls .ext { stroke-width: 10; }
.plan .walls .int { stroke-width: 6; }
.plan .walls .rail { stroke-width: 3; }
.plan .walls .win { fill: var(--floor); stroke: var(--wall); stroke-width: 1.5; }
.plan .walls .glass { stroke-width: 1; stroke-linecap: butt; }

.plan .doors path { fill: none; }
.plan .doors .swing { stroke: var(--line); stroke-width: 1.2; }
.plan .doors .leaf { stroke: var(--wall); stroke-width: 2; }

.plan .room-label {
  fill: var(--muted);
  font-size: 15px;
  font-stretch: 75%;
  font-weight: 500;
  letter-spacing: 0.02em;
}

.plan .dev { cursor: pointer; outline: none; }
.plan .dev .hit { fill: transparent; stroke: none; }

.plan .dev .shape {
  fill: var(--floor);
  fill: color-mix(in srgb, var(--c) 16%, var(--floor));
  stroke: var(--c);
  stroke-width: 1.8;
  transition: fill 0.3s ease;
}

.plan .dev .detail {
  fill: none;
  stroke: var(--c);
  stroke-width: 1.4;
  stroke-linecap: round;
  transition: stroke 0.3s ease;
}

.plan .dev .fx {
  opacity: 0;
  fill: none;
  stroke: var(--c);
  stroke-width: 1.8;
  stroke-linecap: round;
  transition: opacity 0.35s ease;
}

.plan .dev .fx .trail { stroke-width: 1.6; stroke-dasharray: 3 6; }
.plan .dev .fx .glow { fill: var(--c); fill-opacity: 0.16; stroke: none; }

.plan .dev.is-lit .shape { fill: var(--c); }
.plan .dev.is-lit .detail { stroke: var(--floor); }
.plan .dev.is-lit .fx { opacity: 1; }

.plan .dev:focus-visible .shape { stroke: var(--ink); stroke-width: 3; }

@media (prefers-color-scheme: dark) {
  .plan .dev.is-lit { filter: drop-shadow(0 0 7px color-mix(in srgb, var(--c) 65%, transparent)); }
}

/* On load, the devices power on one after another */
@media (prefers-reduced-motion: no-preference) {
  .plan .devices > .dev { animation: power-on 0.9s ease-out backwards; }
  .plan .devices > .dev:nth-child(1) { animation-delay: 0.25s; }
  .plan .devices > .dev:nth-child(2) { animation-delay: 0.37s; }
  .plan .devices > .dev:nth-child(3) { animation-delay: 0.49s; }
  .plan .devices > .dev:nth-child(4) { animation-delay: 0.61s; }
  .plan .devices > .dev:nth-child(5) { animation-delay: 0.73s; }
  .plan .devices > .dev:nth-child(6) { animation-delay: 0.85s; }
  .plan .devices > .dev:nth-child(7) { animation-delay: 0.97s; }
  .plan .devices > .dev .shape { animation: power-on-fill 0.9s ease-out backwards; animation-delay: inherit; }
}

@keyframes power-on {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes power-on-fill {
  0%, 30% { fill: var(--c); }
  100% { fill: color-mix(in srgb, var(--c) 16%, var(--floor)); }
}

.plan-caption {
  margin: 14px 0 0;
  min-height: 3.6em;
  color: var(--muted);
  font-size: 0.9375rem;
  line-height: 1.6;
}

.plan-caption strong {
  display: block;
  color: var(--ink);
  font-weight: 700;
  font-stretch: 112%;
}

/* Project list */

.group + .group { margin-top: 52px; }

.group h2 {
  margin: 0;
  font-size: 1.375rem;
  font-weight: 800;
  line-height: 1.35;
}

.group-note {
  margin: 6px 0 0;
  max-width: 34em;
  color: var(--muted);
  font-size: 0.9375rem;
}

.projects {
  list-style: none;
  margin: 16px 0 0;
  padding: 0;
  border-top: 1px solid var(--rule);
}

.project {
  position: relative;
  display: grid;
  grid-template-columns: 56px minmax(0, 1fr);
  gap: 18px;
  padding: 22px 0 24px 18px;
  border-bottom: 1px solid var(--rule);
  scroll-margin-top: 28vh;
}

/* Bar on the left: this project is lit on the plan */
.project::before {
  content: "";
  position: absolute;
  left: 0;
  top: 24px;
  bottom: 26px;
  width: 3px;
  border-radius: 2px;
  background: var(--c);
  opacity: 0;
  transform: scaleY(0.4);
  transition: opacity 0.3s ease, transform 0.3s ease;
}

.project.is-lit::before { opacity: 1; transform: none; }

.project img { display: block; width: 56px; height: 56px; }

.project h3 {
  margin: 0;
  font-size: 1.25rem;
  font-weight: 700;
  font-stretch: 112%;
  letter-spacing: -0.01em;
  line-height: 1.3;
}

.desc {
  margin: 6px 0 0;
  max-width: 36em;
  text-wrap: pretty;
}

.project-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 2px 12px;
}

/* Inline text, not flex, so the label shares the name's baseline */
.verified {
  color: var(--c);
  font-size: 0.8125rem;
  font-weight: 600;
  line-height: 1.3;
  white-space: nowrap;
}

.verified svg {
  width: 14px;
  height: 14px;
  margin-right: 4px;
  vertical-align: -2px;
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

/* Facts that decide whether a project fits: what it works with, how it connects, its license */
.facts {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 28px;
  margin: 12px 0 0;
  font-size: 0.875rem;
  line-height: 1.4;
}

.facts dt { color: var(--muted); }
.facts dd { margin: 1px 0 0; font-weight: 600; }

.links {
  display: flex;
  flex-wrap: wrap;
  gap: 4px 22px;
  margin: 10px 0 0;
  font-size: 0.9375rem;
}

.links a {
  font-weight: 600;
  text-decoration-thickness: 1.5px;
  text-underline-offset: 5px;
}

.links a.quiet { color: var(--muted); font-weight: 500; }
.links a:hover { color: var(--ink); text-decoration-thickness: 2.5px; }

/* Footer */

.foot {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 8px 24px;
  padding: 28px 0 40px;
  border-top: 1px solid var(--rule);
  color: var(--muted);
  font-size: 0.9375rem;
}

.foot p { margin: 0; }
.foot-links { display: flex; flex-wrap: wrap; gap: 4px 22px; }
.foot-links a { text-underline-offset: 4px; }
.foot-links a:hover { color: var(--ink); }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { transition-duration: 0.01ms !important; animation: none !important; }
}

@media (max-width: 520px) {
  body { font-size: 1rem; }
  .nav { gap: 14px; }
  .project { grid-template-columns: 44px minmax(0, 1fr); gap: 14px; padding-left: 14px; }
  .project img { width: 44px; height: 44px; }
  .plan .room-label { font-size: 19px; }
}