/* Kite website – deliberately plain. */

:root {
  --bg: #ffffff;
  --fg: #232629;
  --muted: #5c6166;
  --border: #d4d7da;
  --panel: #f4f5f6;
  --link: #1d6fa5;
  --accent: #3daee9;      /* Breeze blue */
  --accent-fg: #ffffff;
  --yes: #1e7d35;
  --part: #9a6700;
  --no: #b3261e;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #1b1e20;
    --fg: #e4e6e8;
    --muted: #a3a8ad;
    --border: #3b4045;
    --panel: #232629;
    --link: #6cc1f0;
    --accent: #3daee9;
    --accent-fg: #0d1214;
    --yes: #5fcf7a;
    --part: #e0b34a;
    --no: #f07b72;
  }
}

* { box-sizing: border-box; }

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

body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: "Noto Sans", "Oxygen", "DejaVu Sans", "Helvetica Neue", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.55;
}

a { color: var(--link); }
a:hover { text-decoration: none; }

code, pre, kbd {
  font-family: "Hack", "DejaVu Sans Mono", "Noto Sans Mono", monospace;
  font-size: 0.92em;
}
pre {
  background: var(--panel);
  border: 1px solid var(--border);
  padding: 0.75em 1em;
  overflow-x: auto;
}
kbd {
  border: 1px solid var(--border);
  border-bottom-width: 2px;
  padding: 0 0.3em;
  border-radius: 3px;
  background: var(--panel);
}

.wrap {
  max-width: 920px;
  margin: 0 auto;
  padding: 0 16px;
}

/* Header / nav */
.site-header {
  border-bottom: 1px solid var(--border);
}
.site-header .wrap {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 8px 24px;
  padding-top: 10px;
  padding-bottom: 10px;
}
.brand {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--fg);
  text-decoration: none;
  font-weight: bold;
  font-size: 1.15em;
}
.brand img { width: 28px; height: 28px; }
.site-nav ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 4px 18px;
}
.site-nav a { text-decoration: none; }
.site-nav a:hover { text-decoration: underline; }
.site-nav a[aria-current="page"] {
  color: var(--fg);
  font-weight: bold;
}

main { padding: 24px 0 48px; }

h1, h2, h3 { line-height: 1.25; }
h1 { font-size: 1.9em; margin: 0.4em 0; }
h2 {
  font-size: 1.4em;
  margin: 2em 0 0.6em;
  padding-bottom: 0.2em;
  border-bottom: 1px solid var(--border);
}
h3 { font-size: 1.1em; margin: 1.5em 0 0.4em; }

/* Hero */
.hero {
  text-align: center;
  padding: 24px 0 8px;
}
/* Hero backdrop: pre-blurred Plasma "Hanabi" wallpaper, fading into the page */
.hero-bg {
  margin-top: -24px;
  padding: 24px 0 40px;
  background:
    linear-gradient(to bottom, transparent 55%, var(--bg)),
    url("../images/hero/hero-light.jpg") center top / cover no-repeat;
}
@media (prefers-color-scheme: dark) {
  .hero-bg {
    background:
      linear-gradient(to bottom, transparent 55%, var(--bg)),
      url("../images/hero/hero-dark.jpg") center top / cover no-repeat;
  }
}
.hero-bg .hero h1,
.hero-bg .hero .tagline {
  color: #fff;
  text-shadow: 0 1px 3px rgba(0, 0, 0, 0.45);
}
.hero-bg .hero img.logo { filter: drop-shadow(0 2px 8px rgba(0, 0, 0, 0.35)); }
.hero-bg .shot { box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3); }

.hero img.logo { width: 128px; height: 128px; }
.hero h1 { font-size: 2.6em; margin: 0.2em 0 0; }
.hero .tagline { color: var(--muted); margin: 0.2em 0 1.2em; font-size: 1.1em; }

.buttons {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px;
}
.button {
  display: inline-block;
  padding: 0.55em 1.3em;
  border: 1px solid var(--border);
  border-radius: 3px;
  background: var(--panel);
  color: var(--fg);
  text-decoration: none;
  font-weight: bold;
}
.button:hover { border-color: var(--accent); }
.button.primary {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--accent-fg);
}
.button.primary:hover { filter: brightness(1.08); }
.button .icon {
  width: 1em;
  height: 1em;
  vertical-align: -0.14em;
  margin-right: 0.45em;
}
.button small { display: block; font-weight: normal; font-size: 0.8em; opacity: 0.85; }

.note { color: var(--muted); font-size: 0.92em; }

/* Screenshots */
.shot {
  margin: 32px 0 0;
  border: 1px solid var(--border);
  background: var(--panel);
}
.shot img { display: block; width: 100%; height: auto; }
.shot figcaption {
  padding: 6px 10px;
  font-size: 0.9em;
  color: var(--muted);
  border-top: 1px solid var(--border);
}
.missing-image {
  display: flex;
  align-items: center;
  justify-content: center;
  aspect-ratio: 16 / 10;
  color: var(--muted);
  font-size: 0.9em;
  text-align: center;
  padding: 16px;
}

/* Closing call to action */
.cta {
  text-align: center;
  margin-top: 48px;
  padding: 8px 16px 28px;
  border: 1px solid var(--border);
  background: var(--panel);
}
.cta h2 { border-bottom: none; margin-top: 0.8em; }

/* "Why Kite": icon boxes */
.pillars {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 16px;
}
.pillar {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--border);
  background: var(--panel);
  padding: 20px 20px 8px;
}
/* Phones: boxes are short, so give the icon its own room instead of cropping it */
@media (max-width: 560px) {
  .pillar { padding-bottom: 96px; }
}
/* Large, faint icon in the bottom-left corner, behind the text */
.pillar-icon {
  position: absolute;
  bottom: -22px;
  left: -14px;
  width: 132px;
  height: 132px;
  color: var(--accent);
  opacity: 0.18;
  pointer-events: none;
}
.pillar h3, .pillar p { position: relative; }
.pillar h3 { margin: 0.2em 0 0.4em; }

/* "Take a closer look": accordion bound to a screenshot carousel */
.explorer {
  display: grid;
  grid-template-columns: minmax(0, 2fr) minmax(0, 3fr);
  gap: 24px;
  align-items: start;
}
.explorer-list details {
  border-left: 3px solid transparent;
  border-bottom: 1px solid var(--border);
}
.explorer-list details:first-child { border-top: 1px solid var(--border); }
.explorer-list details[open] {
  border-left-color: var(--accent);
  background: var(--panel);
}
.explorer-list summary {
  cursor: pointer;
  list-style: none;
  padding: 12px 14px;
  font-weight: bold;
}
.explorer-list summary::-webkit-details-marker { display: none; }
.explorer-list summary:hover { background: var(--panel); }
.explorer-list summary:focus-visible { outline: 2px solid var(--accent); outline-offset: -2px; }
.explorer-list details p { margin: 0; padding: 0 14px 14px; }

.explorer-carousel {
  border: 1px solid var(--border);
  background: var(--panel);
}
.explorer-viewport { overflow: hidden; touch-action: pan-y; }
.explorer-track {
  display: flex;
  transition: transform 0.3s ease;
}
@media (prefers-reduced-motion: reduce) {
  .explorer-track { transition: none; }
}
.explorer-slide { flex: 0 0 100%; margin: 0; }
.explorer-slide a { display: block; }
.explorer-slide img { display: block; width: 100%; height: auto; }
.explorer-controls {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  padding: 6px 8px;
  border-top: 1px solid var(--border);
}
.explorer-controls > button {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0;
  width: 34px;
  height: 30px;
  border: 1px solid var(--border);
  border-radius: 3px;
  background: var(--bg);
  color: var(--fg);
  cursor: pointer;
}
.explorer-controls > button svg { width: 16px; height: 16px; }
.explorer-controls > button:hover { border-color: var(--accent); }
.explorer-dots { display: flex; flex-wrap: wrap; justify-content: center; gap: 6px; }
.explorer-dots button {
  width: 10px;
  height: 10px;
  padding: 0;
  border: 1px solid var(--muted);
  border-radius: 50%;
  background: transparent;
  cursor: pointer;
}
.explorer-dots button[aria-current="true"] {
  background: var(--accent);
  border-color: var(--accent);
}
@media (max-width: 760px) {
  .explorer { grid-template-columns: 1fr; }
  .explorer-carousel { order: -1; }
}

/* Comparison slider */
.compare-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin: 0 0 10px;
}
.compare-tabs button {
  font: inherit;
  padding: 0.3em 0.9em;
  border: 1px solid var(--border);
  border-radius: 3px;
  background: var(--panel);
  color: var(--fg);
  cursor: pointer;
}
.compare-tabs button[aria-pressed="true"] {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--accent-fg);
}
.compare {
  position: relative;
  border: 1px solid var(--border);
  background: var(--panel);
  overflow: hidden;
  user-select: none;
  touch-action: pan-y;
  --pos: 50%;
}
.compare img {
  display: block;
  width: 100%;
  height: auto;
  pointer-events: none;
}
.compare .compare-top {
  position: absolute;
  inset: 0;
  height: 100%;
  object-fit: cover;
  clip-path: inset(0 calc(100% - var(--pos)) 0 0);
}
.compare .compare-divider {
  position: absolute;
  top: 0;
  bottom: 0;
  left: var(--pos);
  width: 2px;
  margin-left: -1px;
  background: var(--accent);
  pointer-events: none;
}
.compare .compare-divider::after {
  content: "\2194";
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 34px;
  height: 34px;
  line-height: 32px;
  text-align: center;
  border-radius: 50%;
  background: var(--accent);
  color: var(--accent-fg);
  font-size: 18px;
}
.compare .compare-label {
  position: absolute;
  top: 8px;
  padding: 1px 8px;
  font-size: 0.85em;
  background: rgba(0, 0, 0, 0.65);
  color: #fff;
  pointer-events: none;
}
.compare .compare-label.left { left: 8px; }
.compare .compare-label.right { right: 8px; }
.compare input[type="range"] {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  margin: 0;
  opacity: 0;
  cursor: ew-resize;
}
.compare:focus-within { outline: 2px solid var(--accent); outline-offset: 2px; }

/* Tables */
/* Only scroll on narrow screens, so hover explainers aren't clipped on desktop */
@media (max-width: 760px) {
  .table-scroll { overflow-x: auto; }
}
table {
  border-collapse: collapse;
  width: 100%;
  font-size: 0.95em;
}
th, td {
  border: 1px solid var(--border);
  padding: 6px 10px;
  text-align: left;
  vertical-align: top;
}
thead th { background: var(--panel); }
td.c { text-align: center; white-space: nowrap; }
th.kite, td.kite { background: color-mix(in srgb, var(--accent) 10%, transparent); }
.yes { color: var(--yes); font-weight: bold; }
.part { color: var(--part); font-weight: bold; }
.no { color: var(--no); font-weight: bold; }
td small { color: var(--muted); }

/* Hover/focus explainers on table cells */
.tip {
  position: relative;
  cursor: help;
  border-bottom: 1px dotted currentColor;
}
.tip::after {
  content: attr(data-tip);
  position: absolute;
  bottom: calc(100% + 6px);
  left: 50%;
  transform: translateX(-50%);
  width: max-content;
  max-width: 220px;
  padding: 6px 9px;
  border-radius: 3px;
  background: var(--fg);
  color: var(--bg);
  font-size: 0.82rem;
  font-weight: normal;
  line-height: 1.35;
  text-align: left;
  white-space: normal;
  pointer-events: none;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.12s;
  z-index: 2;
}
.tip:hover::after,
.tip:focus::after {
  opacity: 1;
  visibility: visible;
}
.tip:focus { outline: 2px solid var(--accent); outline-offset: 2px; }

/* Download */
.downloads {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 16px;
}
.download-box {
  border: 1px solid var(--border);
  padding: 4px 16px 16px;
  background: var(--panel);
}
.download-box h3 { margin-top: 0.8em; }

/* FAQ accordion */
.faq details {
  border: 1px solid var(--border);
  border-top: none;
}
.faq details:first-child { border-top: 1px solid var(--border); }
.faq summary {
  cursor: pointer;
  list-style: none;
  padding: 10px 14px 10px 36px;
  position: relative;
  font-weight: bold;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::before {
  content: "";
  position: absolute;
  left: 15px;
  top: 50%;
  width: 7px;
  height: 7px;
  border-right: 2px solid var(--muted);
  border-bottom: 2px solid var(--muted);
  transform: translateY(-65%) rotate(-45deg);
  transition: transform 0.15s;
}
.faq details[open] summary::before { transform: translateY(-75%) rotate(45deg); }
.faq summary:hover { background: var(--panel); }
.faq summary:focus-visible { outline: 2px solid var(--accent); outline-offset: -2px; }
.faq details[open] summary { border-bottom: 1px solid var(--border); background: var(--panel); }
.faq .answer { padding: 4px 14px 12px 36px; }
.faq .answer > p:first-child { margin-top: 0.6em; }

/* Developer docs */
.doc-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin: 8px 0 4px;
}
.doc-nav a {
  padding: 0.3em 0.9em;
  border: 1px solid var(--border);
  border-radius: 3px;
  background: var(--panel);
  color: var(--fg);
  text-decoration: none;
}
.doc-nav a:hover { border-color: var(--accent); }
.doc-nav a[aria-current="page"] {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--accent-fg);
}
.doc-toc {
  margin: 16px 0 0;
  padding: 10px 14px;
  border: 1px solid var(--border);
  background: var(--panel);
  font-size: 0.92em;
}
.doc-toc ul { margin: 6px 0 0; padding-left: 18px; columns: 2; column-gap: 32px; }
@media (max-width: 640px) {
  .doc-toc ul { columns: 1; }
}
.doc { overflow-wrap: break-word; }
.doc h1 { margin-top: 0.6em; }
.doc table { margin: 1em 0; display: block; overflow-x: auto; }
.doc pre code { font-size: inherit; }
.doc :not(pre) > code {
  background: var(--panel);
  padding: 0.1em 0.3em;
  border-radius: 3px;
}
.doc h2, .doc h3 { scroll-margin-top: 12px; }

/* Footer */
.site-footer {
  border-top: 1px solid var(--border);
  color: var(--muted);
  font-size: 0.9em;
}
.site-footer .wrap { padding-top: 14px; padding-bottom: 24px; }