/* Maple Mono via Fontsource CDN */
@font-face {
  font-family: 'Maple Mono';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url('https://cdn.jsdelivr.net/fontsource/fonts/maple-mono@latest/latin-400-normal.woff2') format('woff2');
}

@font-face {
  font-family: 'Maple Mono';
  font-style: normal;
  font-weight: 700;
  font-display: swap;
  src: url('https://cdn.jsdelivr.net/fontsource/fonts/maple-mono@latest/latin-700-normal.woff2') format('woff2');
}

:root {
  color-scheme: light dark;

  --font-sans: "Maple Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
  --font-mono: "Maple Mono", ui-monospace, SFMono-Regular, Menlo, monospace;

  /* Flexoki light */
  --bg: #FFFCF0;
  --fg: #100F0F;
  --muted: #878580;
  --muted-2: #6F6B66;
  --surface: #F2F0E5;
  --surface-2: #E8E5D8;
  --border: #100F0F;
  --border-soft: #D8D4C8;
  --code-bg: #F2F0E5;
  --nav-bg: #FFFCF0;

  --accent: #BC5215;
  --accent-light: #DA702C;
  --accent-dark: #8B3A0F;
  --accent-contrast: #FFFCF0;

  /* Flexoki code palette */
  --flex-red: #AF3029;
  --flex-orange: #BC5215;
  --flex-yellow: #AD8301;
  --flex-green: #66800B;
  --flex-cyan: #24837B;
  --flex-blue: #205EA6;
  --flex-purple: #5E409D;
  --flex-magenta: #A02F6F;

  --radius: 0;
  --container: 760px;
  --container-wide: 960px;
}

@media (prefers-color-scheme: dark) {
  :root {
    /* Flexoki dark */
    --bg: #100F0F;
    --fg: #CECDC3;
    --muted: #878580;
    --muted-2: #A8A59E;
    --surface: #1C1B1A;
    --surface-2: #282625;
    --border: #CECDC3;
    --border-soft: #34322F;
    --code-bg: #1C1B1A;
    --nav-bg: #100F0F;

    --accent: #ED8649;
    --accent-light: #F5A64C;
    --accent-dark: #BC5215;
    --accent-contrast: #100F0F;
  }
}

[data-theme="light"] {
  --bg: #FFFCF0;
  --fg: #100F0F;
  --muted: #878580;
  --muted-2: #6F6B66;
  --surface: #F2F0E5;
  --surface-2: #E8E5D8;
  --border: #100F0F;
  --border-soft: #D8D4C8;
  --code-bg: #F2F0E5;
  --nav-bg: #FFFCF0;
  --accent: #BC5215;
  --accent-light: #DA702C;
  --accent-dark: #8B3A0F;
  --accent-contrast: #FFFCF0;
}

[data-theme="dark"] {
  --bg: #100F0F;
  --fg: #CECDC3;
  --muted: #878580;
  --muted-2: #A8A59E;
  --surface: #1C1B1A;
  --surface-2: #282625;
  --border: #CECDC3;
  --border-soft: #34322F;
  --code-bg: #1C1B1A;
  --nav-bg: #100F0F;
  --accent: #ED8649;
  --accent-light: #F5A64C;
  --accent-dark: #BC5215;
  --accent-contrast: #100F0F;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 15.5px;
  line-height: 1.65;
  background: var(--bg);
  color: var(--fg);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

a {
  color: var(--accent);
  text-decoration: underline;
  text-underline-offset: 0.18em;
  text-decoration-thickness: 1px;
  transition: color 0.12s ease, text-decoration-color 0.12s ease;
}

a:hover,
a:focus {
  color: var(--accent-dark);
  text-decoration-color: var(--accent-dark);
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

::selection {
  background: var(--accent);
  color: var(--accent-contrast);
}

/* Layout */
.container {
  width: min(100% - 2rem, var(--container));
  margin-inline: auto;
}

.container--wide {
  width: min(100% - 2rem, var(--container-wide));
}

main {
  flex: 1;
  padding: 2rem 0 3rem;
}

/* Navigation */
.metro-nav {
  background: var(--nav-bg);
  border-bottom: 1px solid var(--border-soft);
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: saturate(1.1);
}

.metro-nav .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  min-height: 56px;
}

.metro-nav__brand {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--fg);
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 0.4rem;
  letter-spacing: -0.01em;
}

.metro-nav__brand:hover,
.metro-nav__brand:focus {
  color: var(--accent);
  background: none;
  text-decoration: none;
}

.metro-nav__brand::before {
  content: ">";
  color: var(--accent);
  font-weight: 700;
}

.metro-nav__links {
  display: flex;
  gap: 0.35rem;
  align-items: center;
  list-style: none;
  margin: 0;
  padding: 0;
}

.metro-nav__links a {
  color: var(--muted-2);
  text-decoration: none;
  font-weight: 700;
  font-size: 0.9rem;
  padding: 0.3rem 0.55rem;
  border: 1px solid transparent;
}

.metro-nav__links a:hover {
  color: var(--fg);
  background: var(--surface);
  border-color: var(--border-soft);
  text-decoration: none;
}

.metro-nav__links a[aria-current="page"] {
  color: var(--accent-contrast);
  background: var(--accent);
  border-color: var(--accent);
  text-decoration: none;
}

/* Headings */
h1, h2, h3, h4, h5, h6 {
  line-height: 1.25;
  margin: 2rem 0 0.75rem;
  font-weight: 700;
  letter-spacing: -0.015em;
  color: var(--fg);
}

h1 {
  font-size: 2.1rem;
  margin-top: 0;
  line-height: 1.15;
}

h2 {
  font-size: 1.4rem;
  padding-bottom: 0.3rem;
  border-bottom: 1px solid var(--border-soft);
}

h3 { font-size: 1.12rem; }
h4 { font-size: 1rem; }

p { margin: 0 0 1rem; }

/* Tiles */
.tile-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 0.75rem;
  margin: 1.5rem 0 2rem;
}

.tile {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  min-height: 140px;
  padding: 1rem 1.1rem;
  background: var(--surface);
  border: 1px solid var(--border-soft);
  text-decoration: none;
  transition: border-color 0.14s ease, background 0.14s ease, transform 0.14s ease;
}

.tile:hover,
.tile:focus-within {
  background: var(--surface-2);
  border-color: var(--border);
  text-decoration: none;
  transform: translateY(-1px);
}

.tile:hover .tile__title {
  color: var(--accent);
}

.tile:hover .tile__desc,
.tile:hover .tile__meta {
  color: var(--muted-2);
}

.tile__title {
  font-size: 1.1rem;
  font-weight: 700;
  margin: 0 0 0.4rem;
  color: var(--fg);
  text-decoration: none;
}

.tile__desc {
  color: var(--muted-2);
  font-size: 0.88rem;
  margin: 0;
  text-decoration: none;
}

.tile__meta {
  margin-top: 1rem;
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--accent);
  text-decoration: none;
}

.tile--large {
  grid-column: span 2;
}

@media (max-width: 600px) {
  .tile--large {
    grid-column: span 1;
  }
}

/* Footer */
.metro-footer {
  background: var(--nav-bg);
  border-top: 1px solid var(--border-soft);
  padding: 1.25rem 0 1.75rem;
  color: var(--muted-2);
  font-size: 0.82rem;
}

.metro-footer .container {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
}

.metro-footer p {
  margin: 0;
}

/* Utilities */
.lead {
  font-size: 1.05rem;
  color: var(--muted-2);
  margin: 0.5rem 0 1.25rem;
  line-height: 1.55;
}

.tag {
  display: inline-block;
  padding: 0.12rem 0.45rem;
  background: var(--surface);
  color: var(--muted-2);
  border: 1px solid var(--border-soft);
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.date {
  color: var(--muted);
  font-size: 0.82rem;
}

.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;
}

@media (max-width: 600px) {
  body { font-size: 15px; }
  h1 { font-size: 1.75rem; }
  .metro-nav .container { min-height: 52px; }
  .metro-nav__links { gap: 0.15rem; }
  .metro-nav__links a { padding: 0.25rem 0.4rem; font-size: 0.85rem; }
}