/*
 * strongwind.dev - styles layered on Pico CSS v2.
 * Pico supplies the base system and light/dark handling; this file rebrands the
 * accent to blue, hosts Inter locally, and adds the small amount of layout Pico
 * does not cover. Loaded after Pico so equal-specificity overrides win.
 */

/* --- Inter (self-hosted, screen-optimised) ------------------------------- */

@font-face {
  font-family: "Inter Variable";
  font-style: normal;
  font-display: swap;
  font-weight: 100 900;
  src: url("/assets/fonts/inter-latin-wght-normal.woff2") format("woff2");
  unicode-range:
    U+0000-00FF, U+0131, U+0152-0153, U+2000-206F, U+2074, U+20AC, U+2122,
    U+2212, U+2215;
}

:root {
  --pico-font-family-sans-serif:
    "Inter Variable", system-ui, -apple-system, "Segoe UI", roboto,
    "Helvetica Neue", arial, sans-serif;
  --pico-font-family: var(--pico-font-family-sans-serif);
  --pico-border-radius: 0.5rem;

  scroll-behavior: smooth;
}

/* --- Blue accent + reading-optimised neutrals ---------------------------- */

/* AA+ contrast in both themes; surfaces are off-white / off-black, never pure
   #fff or #000, to cut glare and halation. */

:root,
:root[data-theme="light"] {
  --brand: #1d4ed8;
  --pico-primary: #1d4ed8;
  --pico-primary-background: #1d4ed8;
  --pico-primary-hover: #1a44bd;
  --pico-primary-hover-background: #1a44bd;
  --pico-primary-focus: rgb(29 78 216 / 28%);
  --pico-primary-inverse: #fff;
  --pico-primary-underline: rgb(29 78 216 / 40%);
  --pico-background-color: #fff;
  --pico-color: #1b2433;
  --pico-muted-color: #55617a;
  --pico-card-background-color: #fff;
  --pico-card-sectioning-background-color: #f4f6fb;
  --pico-muted-border-color: #e3e8f0;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --brand: #60a5fa;
    --pico-primary: #60a5fa;
    --pico-primary-background: #1d4ed8;
    --pico-primary-hover: #93c5fd;
    --pico-primary-hover-background: #2563eb;
    --pico-primary-focus: rgb(96 165 250 / 30%);
    --pico-primary-inverse: #fff;
    --pico-primary-underline: rgb(96 165 250 / 40%);
    --pico-background-color: #0f1626;
    --pico-color: #e6eaf3;
    --pico-muted-color: #98a4bb;
    --pico-card-background-color: #172033;
    --pico-card-sectioning-background-color: #131a29;
    --pico-muted-border-color: #27314a;
  }
}

:root[data-theme="dark"] {
  --brand: #60a5fa;
  --pico-primary: #60a5fa;
  --pico-primary-background: #1d4ed8;
  --pico-primary-hover: #93c5fd;
  --pico-primary-hover-background: #2563eb;
  --pico-primary-focus: rgb(96 165 250 / 30%);
  --pico-primary-inverse: #fff;
  --pico-primary-underline: rgb(96 165 250 / 40%);
  --pico-background-color: #0f1626;
  --pico-color: #e6eaf3;
  --pico-muted-color: #98a4bb;
  --pico-card-background-color: #172033;
  --pico-card-sectioning-background-color: #131a29;
  --pico-muted-border-color: #27314a;
}

/* --- Base ---------------------------------------------------------------- */

@media (prefers-reduced-motion: reduce) {
  :root {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
}

body {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

main {
  flex: 1 0 auto;
}

.ico {
  flex: none;
  width: 1em;
  height: 1em;
  vertical-align: -0.14em;
}

.skip {
  position: absolute;
  top: -3rem;
  left: 0.5rem;
  z-index: 100;
  padding: 0.5rem 0.9rem;
  color: var(--pico-primary-inverse);
  background: var(--pico-primary-background);
  border-radius: 0.5rem;
  transition: top 0.15s ease;
}

.skip:focus {
  top: 0.5rem;
}

/* Focus ring. Defined early so it precedes higher-specificity link rules. */
a:focus-visible,
button:focus-visible {
  outline: 2px solid var(--brand);
  outline-offset: 2px;
  border-radius: 0.4rem;
}

/* --- Header -------------------------------------------------------------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: color-mix(in srgb, var(--pico-background-color) 82%, transparent);
  backdrop-filter: saturate(1.4) blur(10px);
  -webkit-backdrop-filter: saturate(1.4) blur(10px);
  border-bottom: 1px solid var(--pico-muted-border-color);
}

.nav {
  display: flex;
  gap: 1rem;
  align-items: center;
  justify-content: space-between;
  padding: 0.55rem 0;
}

.brand {
  display: inline-flex;
  gap: 0.55rem;
  align-items: center;
  font-weight: 700;
  font-size: 1.05rem;
  letter-spacing: -0.02em;
  color: var(--pico-color);
  text-decoration: none;
}

/* Circular + bordered so the dark-background avatar reads as an avatar chip
   rather than a hard dark square on the light theme. */
.brand img {
  width: 1.7rem;
  height: 1.7rem;
  border: 1px solid var(--pico-muted-border-color);
  border-radius: 50%;
}

.brand .dot {
  color: var(--brand);
}

.nav-actions {
  display: inline-flex;
  gap: 0.3rem;
  align-items: center;
}

.icon-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.3rem;
  height: 2.3rem;
  padding: 0;
  margin: 0;
  color: var(--pico-color);
  line-height: 1;
  background: transparent;
  border: 1px solid transparent;
  border-radius: 0.5rem;
  cursor: pointer;
}

.icon-btn:hover {
  color: var(--brand);
  background: var(--pico-card-sectioning-background-color);
}

.icon-btn .ico {
  width: 1.2rem;
  height: 1.2rem;
}

/* Toggle glyph: sun in dark, moon in light. Pure CSS so it is correct pre-JS. */
#theme-toggle .i-sun {
  display: none;
}

#theme-toggle .i-moon {
  display: block;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) #theme-toggle .i-sun {
    display: block;
  }

  :root:not([data-theme="light"]) #theme-toggle .i-moon {
    display: none;
  }
}

:root[data-theme="dark"] #theme-toggle .i-sun {
  display: block;
}

:root[data-theme="dark"] #theme-toggle .i-moon {
  display: none;
}

:root[data-theme="light"] #theme-toggle .i-sun {
  display: none;
}

:root[data-theme="light"] #theme-toggle .i-moon {
  display: block;
}

/* --- Sections ------------------------------------------------------------ */

section {
  margin-block: clamp(2rem, 5vw, 3.25rem);
}

.hero {
  margin-top: clamp(1.75rem, 5vw, 2.75rem);
}

.hero h1 {
  max-width: 22ch;
  margin: 0;
  font-size: clamp(1.65rem, 4vw, 2.4rem);
  line-height: 1.15;
  letter-spacing: -0.02em;
}

/* --- Tool groups + compact list ------------------------------------------ */

.group {
  margin-bottom: 1.75rem;
}

.group:last-child {
  margin-bottom: 0;
}

.group > h2,
.eyebrow {
  margin-bottom: 0.55rem;
  padding-bottom: 0.45rem;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--pico-muted-color);
  border-bottom: 1px solid var(--pico-muted-border-color);
}

.list {
  padding: 0;
  margin: 0;
  list-style: none;
}

.item {
  display: flex;
  gap: 1rem;
  align-items: center;
  padding: 0.7rem 0.4rem;
  border-bottom: 1px solid var(--pico-muted-border-color);
}

.item:hover {
  background: var(--pico-card-sectioning-background-color);
}

.item:focus-within {
  outline: 2px solid var(--brand);
  outline-offset: 2px;
  border-radius: 0.4rem;
}

.item-main {
  flex: 1 1 auto;
  min-width: 0;
}

.item-head {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  align-items: baseline;
  margin-bottom: 0.15rem;
}

.item-name {
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--pico-color);
  text-decoration: none;
}

.item-name:hover {
  color: var(--brand);
}

/* Language tag sits beside the name, a step smaller. */
.item-lang {
  display: inline-flex;
  gap: 0.3rem;
  align-items: center;
  font-size: 0.62rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--pico-muted-color);
}

.item-lang::before {
  width: 0.5rem;
  height: 0.5rem;
  background: var(--dot, var(--pico-muted-color));
  border-radius: 50%;
  content: "";
}

.lang-python {
  --dot: #3572a5;
}

.lang-rust {
  --dot: #d1783a;
}

.lang-ref {
  --dot: #8957e5;
}

.item-desc {
  margin: 0;
  color: var(--pico-muted-color);
  font-size: 0.88rem;
  line-height: 1.45;
}

/* Docs + stars, centred in a fixed right column. */
.item-links {
  display: flex;
  flex: none;
  flex-direction: column;
  gap: 0.25rem;
  align-items: center;
  min-width: 4rem;
  font-size: 0.85rem;
  text-align: center;
}

.item-links a {
  font-weight: 600;
  text-decoration: none;
}

.item-links a:hover {
  text-decoration: underline;
}

.stars {
  display: inline-flex;
  gap: 0.28rem;
  align-items: center;
  color: var(--pico-muted-color);
  font-variant-numeric: tabular-nums;
}

.stars .ico {
  color: #e3b341;
}

/* --- Footer -------------------------------------------------------------- */

.site-footer {
  padding-block: 1.5rem;
  margin-top: 1.5rem;
  font-size: 0.86rem;
  color: var(--pico-muted-color);
  border-top: 1px solid var(--pico-muted-border-color);
}

.footer-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
  align-items: center;
  justify-content: space-between;
}

.footer-links {
  display: inline-flex;
  flex-wrap: wrap;
  gap: 1rem;
  padding: 0;
  margin: 0;
  list-style: none;
}

/* --- 404 page bits (btn, kicker) ----------------------------------------- */

.kicker {
  display: inline-block;
  margin-bottom: 0.4rem;
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--brand);
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
  align-items: center;
  margin-top: 1.4rem;
}

.btn {
  display: inline-flex;
  gap: 0.5rem;
  align-items: center;
  padding: 0.55rem 1.05rem;
  font-weight: 600;
  text-decoration: none;
  border-radius: 0.5rem;
}

.btn-primary {
  color: var(--pico-primary-inverse);
  background: var(--pico-primary-background);
  border: 1px solid var(--pico-primary-background);
}

.btn-primary:hover {
  color: var(--pico-primary-inverse);
  background: var(--pico-primary-hover-background);
  border-color: var(--pico-primary-hover-background);
}

.btn-ghost {
  color: var(--pico-color);
  background: transparent;
  border: 1px solid var(--pico-muted-border-color);
}

.btn-ghost:hover {
  color: var(--brand);
  border-color: var(--brand);
}