/* glyphfox studio: design system. Dark first, light on request. */

:root {
  color-scheme: dark;
  --bg: #07070a;
  --bg-2: #0b0b0f;
  --panel: #101015;
  --panel-2: #15151b;
  --panel-3: #1c1c24;
  --line: rgba(255, 255, 255, 0.075);
  --line-2: rgba(255, 255, 255, 0.13);
  --line-3: rgba(255, 255, 255, 0.22);
  --text: #f5f5f6;
  --text-2: #b4b4bd;
  --text-3: #8c8c97;
  --accent: #ff7a1a;
  --accent-2: #ffb35c;
  --accent-3: #ffd9a8;
  --accent-text: #ff8f3d;
  --accent-ink: #1b0c02;
  --accent-soft: rgba(255, 122, 26, 0.12);
  --glow: rgba(255, 122, 26, 0.32);
  --good: #4ade80;
  --bad: #f87171;
  --icon-bg: #0d0d12;
  --shadow: 0 1px 0 rgba(255, 255, 255, 0.04) inset, 0 24px 60px -24px rgba(0, 0, 0, 0.8);
  --radius: 18px;
  --radius-sm: 12px;
  --radius-xs: 8px;
  --font: ui-sans-serif, system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  --mono: ui-monospace, 'SF Mono', 'Cascadia Code', 'JetBrains Mono', Menlo, Consolas, monospace;
  --spring: cubic-bezier(0.22, 1.2, 0.36, 1);
  --ease: cubic-bezier(0.2, 0.8, 0.2, 1);
  --header-h: 64px;
  --max: 1200px;
  --gutter: clamp(16px, 4vw, 32px);
}

:root[data-theme='light'] {
  color-scheme: light;
  --bg: #fbfaf8;
  --bg-2: #f5f4f1;
  --panel: #ffffff;
  --panel-2: #f7f6f3;
  --panel-3: #efede8;
  --line: rgba(17, 12, 6, 0.08);
  --line-2: rgba(17, 12, 6, 0.14);
  --line-3: rgba(17, 12, 6, 0.24);
  --text: #121014;
  --text-2: #4b4852;
  --text-3: #66626d;
  --accent: #ff7a1a;
  --accent-2: #f2960f;
  --accent-3: #7c3a06;
  --accent-text: #b4480a;
  --accent-ink: #1b0c02;
  --accent-soft: rgba(255, 122, 26, 0.12);
  --glow: rgba(255, 122, 26, 0.22);
  --icon-bg: #f4f2ee;
  --shadow: 0 1px 0 rgba(255, 255, 255, 0.8) inset, 0 24px 50px -28px rgba(30, 20, 10, 0.35);
}

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

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

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.6 var(--font);
  font-feature-settings: 'ss01', 'cv11';
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

img,
svg,
canvas,
video {
  max-width: 100%;
}

a {
  color: inherit;
}

button,
input,
select,
textarea {
  font: inherit;
  color: inherit;
}

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
  border-radius: 6px;
}

::selection {
  background: rgba(255, 122, 26, 0.35);
  color: var(--text);
}

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

.skip {
  position: fixed;
  left: 12px;
  top: -60px;
  z-index: 100;
  padding: 10px 14px;
  border-radius: 10px;
  background: var(--accent);
  color: var(--accent-ink);
  font-weight: 600;
  text-decoration: none;
  transition: top 0.2s var(--ease);
}
.skip:focus {
  top: 12px;
}

.wrap {
  width: 100%;
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 var(--gutter);
}

/* Header */

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  height: var(--header-h);
  background: color-mix(in srgb, var(--bg) 78%, transparent);
  backdrop-filter: saturate(160%) blur(16px);
  -webkit-backdrop-filter: saturate(160%) blur(16px);
  border-bottom: 1px solid var(--line);
}
.site-header .wrap {
  height: 100%;
  display: flex;
  align-items: center;
  gap: 28px;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  font-weight: 700;
  letter-spacing: -0.02em;
  font-size: 17px;
}
.brand .fenn {
  width: 28px;
  height: 28px;
  color: var(--accent);
}
.brand b {
  font-weight: 700;
}
.nav {
  display: flex;
  gap: 4px;
  margin-right: auto;
}
.nav a {
  padding: 8px 12px;
  border-radius: 10px;
  color: var(--text-2);
  text-decoration: none;
  font-size: 14.5px;
  font-weight: 500;
  transition: color 0.2s, background 0.2s;
}
.nav a:hover,
.nav a[aria-current='page'] {
  color: var(--text);
  background: var(--line);
}
.header-actions {
  display: flex;
  align-items: center;
  gap: 6px;
}
.icon-btn {
  display: inline-grid;
  place-items: center;
  min-width: 38px;
  height: 38px;
  padding: 0 10px;
  border: 1px solid var(--line);
  border-radius: 11px;
  background: transparent;
  color: var(--text-2);
  cursor: pointer;
  text-decoration: none;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.02em;
  transition: color 0.2s, border-color 0.2s, background 0.2s;
}
.icon-btn:hover {
  color: var(--text);
  border-color: var(--line-3);
  background: var(--line);
}
.icon-btn svg {
  width: 18px;
  height: 18px;
}
.menu-btn {
  display: none;
}

/* Language menu (a details element: works without JavaScript) */

.lang-menu {
  position: relative;
}
.lang-menu > summary {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  list-style: none;
}
.lang-menu > summary::-webkit-details-marker {
  display: none;
}
.lang-menu > summary:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}
.lang-menu[open] > summary {
  color: var(--text);
  border-color: var(--line-3);
  background: var(--line);
}
.lang-list {
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  z-index: 60;
  min-width: 200px;
  margin: 0;
  padding: 6px;
  list-style: none;
  background: var(--panel);
  border: 1px solid var(--line-2);
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow);
  animation: lang-in 0.18s var(--ease);
}
.lang-list a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 8px 12px;
  border-radius: var(--radius-xs);
  color: var(--text-2);
  text-decoration: none;
  font-size: 14px;
  white-space: nowrap;
}
.lang-list a:hover,
.lang-list a:focus-visible {
  color: var(--text);
  background: var(--line);
}
.lang-list a[aria-current]::after,
.footer-langs a[aria-current]::after {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
}
.lang-list a[aria-current] {
  color: var(--text);
  font-weight: 600;
}
.footer-langs a {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.footer-langs a[aria-current] {
  color: var(--text);
}
@keyframes lang-in {
  from {
    opacity: 0;
    transform: translateY(-4px);
  }
}

@media (max-width: 860px) {
  .nav {
    position: fixed;
    inset: var(--header-h) 0 auto 0;
    flex-direction: column;
    gap: 2px;
    padding: 12px var(--gutter) 20px;
    background: var(--bg);
    border-bottom: 1px solid var(--line);
    transform: translateY(-8px);
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.2s, transform 0.25s var(--ease);
    margin: 0;
  }
  .nav a {
    padding: 12px 10px;
    font-size: 16px;
  }
  .nav.open {
    opacity: 1;
    transform: none;
    pointer-events: auto;
  }
  .menu-btn {
    display: inline-grid;
  }
  .site-header .wrap {
    gap: 12px;
    justify-content: space-between;
  }
  .header-actions .hide-sm {
    display: none;
  }
}

/* Typography */

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font: 600 12px/1 var(--mono);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent-text);
}
.eyebrow::before {
  content: '';
  width: 18px;
  height: 1px;
  background: currentColor;
  opacity: 0.7;
}
h1,
h2,
h3 {
  margin: 0;
  letter-spacing: -0.035em;
  line-height: 1.02;
  font-weight: 700;
}
.display {
  font-size: clamp(2.6rem, 7vw, 5.6rem);
  letter-spacing: -0.05em;
  line-height: 0.96;
}
.title {
  font-size: clamp(2rem, 4.6vw, 3.6rem);
  letter-spacing: -0.045em;
}
.subtitle {
  font-size: clamp(1.25rem, 2.4vw, 1.6rem);
  letter-spacing: -0.025em;
}
.lead {
  font-size: clamp(1.05rem, 1.6vw, 1.2rem);
  color: var(--text-2);
  max-width: 62ch;
  line-height: 1.6;
}
.muted {
  color: var(--text-2);
}
.faint {
  color: var(--text-3);
}
.grad {
  background: linear-gradient(100deg, var(--text) 10%, var(--accent-2) 55%, var(--accent) 90%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
code,
kbd,
pre {
  font-family: var(--mono);
}
:not(pre) > code {
  font-size: 0.88em;
  padding: 0.12em 0.4em;
  border-radius: 6px;
  background: var(--line);
  border: 1px solid var(--line);
}
kbd {
  display: inline-block;
  min-width: 22px;
  padding: 1px 6px;
  border: 1px solid var(--line-2);
  border-bottom-width: 2px;
  border-radius: 6px;
  font-size: 11.5px;
  line-height: 18px;
  text-align: center;
  color: var(--text-2);
  background: var(--panel);
}

/* Buttons and controls */

.btn {
  --h: 46px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  height: var(--h);
  padding: 0 20px;
  border-radius: 13px;
  border: 1px solid var(--line-2);
  background: var(--panel);
  color: var(--text);
  font-weight: 600;
  font-size: 15px;
  letter-spacing: -0.01em;
  text-decoration: none;
  cursor: pointer;
  transition: transform 0.25s var(--spring), background 0.2s, border-color 0.2s, box-shadow 0.25s;
  white-space: nowrap;
}
.btn:hover {
  border-color: var(--line-3);
  background: var(--panel-2);
}
.btn:active {
  transform: scale(0.97);
}
.btn svg {
  width: 18px;
  height: 18px;
  flex: none;
}
.btn.primary {
  border-color: transparent;
  background: linear-gradient(180deg, #ff9442, var(--accent));
  color: var(--accent-ink);
  box-shadow: 0 1px 0 rgba(255, 255, 255, 0.35) inset, 0 10px 30px -10px var(--glow);
}
.btn.primary:hover {
  box-shadow: 0 1px 0 rgba(255, 255, 255, 0.35) inset, 0 14px 40px -10px var(--glow);
  background: linear-gradient(180deg, #ffa057, #ff8126);
}
.btn.small {
  --h: 34px;
  padding: 0 12px;
  font-size: 13.5px;
  border-radius: 10px;
}
.btn.ghost {
  background: transparent;
}
.btn[aria-pressed='true'] {
  border-color: var(--accent);
  color: var(--accent-text);
  background: var(--accent-soft);
}

.install {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  height: 46px;
  padding: 0 8px 0 16px;
  border: 1px solid var(--line-2);
  border-radius: 13px;
  background: var(--panel);
  font: 500 14px var(--mono);
  color: var(--text-2);
}
.install span::before {
  content: '$ ';
  color: var(--text-3);
}
.install button {
  display: grid;
  place-items: center;
  width: 32px;
  height: 32px;
  border: 0;
  border-radius: 9px;
  background: transparent;
  color: var(--text-2);
  cursor: pointer;
}
.install button:hover {
  background: var(--line);
  color: var(--text);
}

.field {
  display: grid;
  gap: 6px;
  font-size: 13px;
  color: var(--text-2);
}
.field > span {
  display: flex;
  justify-content: space-between;
  gap: 8px;
  font-weight: 500;
}
.field output {
  font: 500 12px var(--mono);
  color: var(--text-3);
}
.input,
select.input,
textarea.input {
  width: 100%;
  height: 40px;
  padding: 0 12px;
  border: 1px solid var(--line-2);
  border-radius: 11px;
  background: var(--panel);
  color: var(--text);
  font-size: 14px;
  transition: border-color 0.2s, box-shadow 0.2s;
}
textarea.input {
  height: auto;
  min-height: 120px;
  padding: 10px 12px;
  font: 13px/1.5 var(--mono);
  resize: vertical;
}
.input:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 4px var(--accent-soft);
}
input[type='range'] {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 22px;
  background: transparent;
  cursor: pointer;
}
input[type='range']::-webkit-slider-runnable-track {
  height: 4px;
  border-radius: 4px;
  background: linear-gradient(90deg, var(--accent) var(--p, 50%), var(--line-2) var(--p, 50%));
}
input[type='range']::-moz-range-track {
  height: 4px;
  border-radius: 4px;
  background: var(--line-2);
}
input[type='range']::-moz-range-progress {
  height: 4px;
  border-radius: 4px;
  background: var(--accent);
}
input[type='range']::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 18px;
  height: 18px;
  margin-top: -7px;
  border-radius: 50%;
  background: #fff;
  border: 0;
  box-shadow: 0 0 0 4px var(--accent-soft), 0 2px 8px rgba(0, 0, 0, 0.5);
}
input[type='range']::-moz-range-thumb {
  width: 18px;
  height: 18px;
  border: 0;
  border-radius: 50%;
  background: #fff;
  box-shadow: 0 0 0 4px var(--accent-soft), 0 2px 8px rgba(0, 0, 0, 0.5);
}
input[type='color'] {
  width: 40px;
  height: 40px;
  padding: 3px;
  border: 1px solid var(--line-2);
  border-radius: 11px;
  background: var(--panel);
  cursor: pointer;
}
input[type='color']::-webkit-color-swatch-wrapper {
  padding: 0;
}
input[type='color']::-webkit-color-swatch {
  border: 0;
  border-radius: 8px;
}

.seg {
  display: inline-flex;
  padding: 3px;
  gap: 2px;
  border: 1px solid var(--line-2);
  border-radius: 12px;
  background: var(--panel);
}
.seg button {
  height: 32px;
  padding: 0 12px;
  border: 0;
  border-radius: 9px;
  background: transparent;
  color: var(--text-2);
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.2s, color 0.2s;
}
.seg button:hover {
  color: var(--text);
}
.seg button[aria-pressed='true'] {
  background: var(--panel-3);
  color: var(--text);
  box-shadow: 0 1px 0 rgba(255, 255, 255, 0.06) inset, 0 1px 3px rgba(0, 0, 0, 0.4);
}

.chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  height: 28px;
  padding: 0 10px;
  border: 1px solid var(--line);
  border-radius: 999px;
  font-size: 12.5px;
  color: var(--text-2);
  background: var(--panel);
  text-decoration: none;
}
button.chip {
  cursor: pointer;
}
.chip[aria-pressed='true'] {
  border-color: var(--accent);
  color: var(--accent-text);
  background: var(--accent-soft);
}

/* Cards and panels */

.card {
  position: relative;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: linear-gradient(180deg, color-mix(in srgb, var(--panel) 92%, white 3%), var(--panel));
  box-shadow: var(--shadow);
}
.card.pad {
  padding: 24px;
}
.panel {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel);
}

/* Sections */

.section {
  position: relative;
  padding: clamp(80px, 12vw, 150px) 0;
}
.section-head {
  display: grid;
  gap: 18px;
  max-width: 760px;
  margin-bottom: clamp(36px, 6vw, 64px);
}
.section-head.center {
  margin-left: auto;
  margin-right: auto;
  text-align: center;
  justify-items: center;
}
.divider {
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--line-2), transparent);
}

.grid-bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image: linear-gradient(var(--line) 1px, transparent 1px), linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 48px 48px;
  background-position: center top;
  -webkit-mask-image: radial-gradient(ellipse 70% 60% at 50% 30%, #000 30%, transparent 75%);
  mask-image: radial-gradient(ellipse 70% 60% at 50% 30%, #000 30%, transparent 75%);
  opacity: 0.55;
}
.glow {
  position: absolute;
  pointer-events: none;
  border-radius: 50%;
  filter: blur(60px);
  background: radial-gradient(circle, var(--glow), transparent 65%);
  opacity: 0.8;
}

/* Code */

.code {
  position: relative;
  min-width: 0;
  max-width: 100%;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: color-mix(in srgb, var(--bg) 70%, var(--panel));
  overflow: hidden;
}
.code-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  height: 40px;
  padding: 0 8px 0 14px;
  border-bottom: 1px solid var(--line);
  font: 500 12px var(--mono);
  color: var(--text-3);
}
.code-head .dots {
  display: inline-flex;
  gap: 6px;
}
.code-head .dots i {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--line-2);
}
.code pre {
  margin: 0;
  padding: 16px 18px;
  overflow: auto;
  font-size: 13px;
  line-height: 1.65;
  color: var(--text);
  tab-size: 2;
}
.code .copy {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  height: 28px;
  padding: 0 10px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
  color: var(--text-2);
  font: 500 12px var(--font);
  cursor: pointer;
}
.code .copy:hover {
  color: var(--text);
  border-color: var(--line-3);
}
.tok-k {
  color: #ff9a57;
}
.tok-s {
  color: #a6e3a1;
}
.tok-c {
  color: var(--text-3);
  font-style: italic;
}
.tok-t {
  color: #89b4fa;
}
.tok-a {
  color: #f9e2af;
}
.tok-n {
  color: #fab387;
}
:root[data-theme='light'] .tok-k {
  color: #b4480a;
}
:root[data-theme='light'] .tok-s {
  color: #1f7a3a;
}
:root[data-theme='light'] .tok-t {
  color: #1d4ed8;
}
:root[data-theme='light'] .tok-a {
  color: #8a5300;
}
:root[data-theme='light'] .tok-n {
  color: #a3410b;
}

.tabs {
  display: flex;
  gap: 2px;
  overflow-x: auto;
  scrollbar-width: none;
}
.tabs::-webkit-scrollbar {
  display: none;
}
.tabs button {
  height: 34px;
  padding: 0 12px;
  border: 0;
  border-radius: 9px;
  background: transparent;
  color: var(--text-3);
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  white-space: nowrap;
}
.tabs button:hover {
  color: var(--text);
}
.tabs button[aria-selected='true'] {
  background: var(--line);
  color: var(--text);
}

/* Icon tiles */

.tile {
  display: grid;
  place-items: center;
  aspect-ratio: 1;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: var(--icon-bg);
  color: var(--text);
  transition: border-color 0.2s, transform 0.35s var(--spring), background 0.2s;
}
.tile:hover {
  border-color: var(--line-3);
}

/* Footer */

.site-footer {
  position: relative;
  border-top: 1px solid var(--line);
  padding: 56px 0 40px;
  color: var(--text-2);
  font-size: 14px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr repeat(4, 1fr);
  gap: 32px;
}
.footer-grid h2 {
  font-size: 13px;
  letter-spacing: 0.02em;
  color: var(--text);
  margin-bottom: 12px;
}
.footer-grid ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 8px;
}
.footer-grid a {
  color: var(--text-2);
  text-decoration: none;
}
.footer-grid a:hover {
  color: var(--text);
}
.footer-brand p {
  max-width: 34ch;
  margin: 14px 0 0;
}
.footer-base {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 12px;
  margin-top: 40px;
  padding-top: 24px;
  border-top: 1px solid var(--line);
  color: var(--text-3);
  font-size: 13px;
}
.footer-base a {
  color: var(--text-2);
}
@media (max-width: 760px) {
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
  .footer-brand {
    grid-column: 1 / -1;
  }
}

/* Toast */

.toast {
  position: fixed;
  left: 50%;
  bottom: 24px;
  z-index: 90;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 16px;
  border: 1px solid var(--line-2);
  border-radius: 12px;
  background: var(--panel-2);
  color: var(--text);
  font-size: 14px;
  box-shadow: 0 20px 50px -20px rgba(0, 0, 0, 0.7);
  transform: translate(-50%, 20px);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s, transform 0.35s var(--spring);
}
.toast.show {
  opacity: 1;
  transform: translate(-50%, 0);
}
.toast svg {
  width: 18px;
  height: 18px;
  color: var(--good);
}

/* Reveal on scroll */

.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.9s var(--ease), transform 1s var(--spring);
}
.reveal.in {
  opacity: 1;
  transform: none;
}

/* Fenn illustrations (docs/assets/fenn), drawn with the icon strokes. */

.fenn-art {
  display: block;
  height: auto;
  overflow: visible;
  color: var(--text);
}
.fenn-art .fill {
  fill: var(--accent);
}
.fenn-art .accent {
  stroke: var(--accent);
}
.empty-art {
  width: min(220px, 64%);
  margin: 0 auto 14px;
  color: var(--text-2);
}
.empty[hidden] {
  display: none;
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
  .reveal {
    opacity: 1;
    transform: none;
  }
}