/* beller-it homepage - responsive styles */

/* Self-hosted Outfit (latin subset) */
@font-face {
  font-family: 'Outfit';
  font-style: normal;
  font-weight: 100 900;
  font-display: swap;
  src: url('fonts/outfit-latin.woff2') format('woff2');
  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;
}

/* Theme colors - each defined once */
:root {
  --_text: rgb(18, 22, 28);
  --_text-muted: rgb(107, 114, 128);
  --_link: rgb(35, 80, 177);
  --_link-hover: rgb(30, 64, 175);
  --_border: rgb(209, 213, 219);
  --_bg: rgb(243, 244, 246);
  --_code-bg: rgb(243, 244, 246);
  --_text-dark: #e5e5e5;
  --_text-muted-dark: rgb(148, 163, 184);
  --_link-dark: rgb(45, 104, 231);
  --_link-hover-dark: rgb(42, 90, 201);
  --_border-dark: rgb(55, 65, 81);
  --_bg-dark: rgb(17, 24, 39);
  --_code-bg-dark: rgb(31, 41, 55);
  --font-display: 'Outfit', system-ui, -apple-system, sans-serif;
  --font-sans: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --max-width: 64rem;
  --spacing: 1.5rem;
}

/* Light: default */
:root,
[data-theme="light"] {
  --color-text: var(--_text);
  --color-text-muted: var(--_text-muted);
  --color-link: var(--_link);
  --color-link-hover: var(--_link-hover);
  --color-border: var(--_border);
  --color-bg: var(--_bg);
  --color-code-bg: var(--_code-bg);
}

/* Dark: system preference or explicit */
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --color-text: var(--_text-dark);
    --color-text-muted: var(--_text-muted-dark);
    --color-link: var(--_link-dark);
    --color-link-hover: var(--_link-hover-dark);
    --color-border: var(--_border-dark);
    --color-bg: var(--_bg-dark);
    --color-code-bg: var(--_code-bg-dark);
  }
}

[data-theme="dark"] {
  --color-text: var(--_text-dark);
  --color-text-muted: var(--_text-muted-dark);
  --color-link: var(--_link-dark);
  --color-link-hover: var(--_link-hover-dark);
  --color-border: var(--_border-dark);
  --color-bg: var(--_bg-dark);
  --color-code-bg: var(--_code-bg-dark);
}

* {
  box-sizing: border-box;
}

html {
  scrollbar-gutter: stable;
}

body {
  margin: 0;
  font-family: var(--font-display);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--color-text);
  background: var(--color-bg);
}

nav {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: var(--spacing);
  border-bottom: 1px solid var(--color-border);
}

nav ul {
  margin: 0;
  padding: 0;
  list-style: none;
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
}

nav a {
  color: var(--color-link);
  text-decoration: none;
  font-weight: 500;
}

nav a:hover {
  color: var(--color-link-hover);
  text-decoration: underline;
}

.nav-icon-wrap {
  margin-right: 0.5rem;
}

.nav-icon {
  width: 1.5rem;
  height: 1.5rem;
  display: block;
}

main {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: var(--spacing);
}

main h1 {
  font-size: 1.75rem;
  font-weight: 700;
  margin: 0 0 0.5rem;
}

main img {
  max-width: 100%;
  height: auto;
  border-radius: 8px;
  margin-bottom: 1rem;
}

img.portrait {
  border-radius: 50%;
  width: 8rem;
  height: 8rem;
  object-fit: cover;
  display: block;
}

main h2 {
  font-size: 1.25rem;
  font-weight: 600;
  margin: 2rem 0 0.75rem;
}

main h3 {
  font-size: 1.1rem;
  font-weight: 600;
  margin: 1.5rem 0 0.5rem;
}

main p {
  margin: 0 0 1rem;
}

main ul, main ol {
  margin: 0 0 1rem;
  padding-left: 1.5rem;
}

main li {
  margin-bottom: 0.25rem;
}

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

main a:hover {
  color: var(--color-link-hover);
  text-decoration: underline;
}

main code {
  font-family: ui-monospace, "Cascadia Code", "Source Code Pro", Menlo, monospace;
  font-size: 0.9em;
  padding: 0.15em 0.4em;
  background: var(--color-code-bg);
  border-radius: 4px;
}

footer {
  max-width: var(--max-width);
  margin: 3rem auto 0;
  padding: var(--spacing);
  font-size: 0.875rem;
  color: var(--color-text-muted);
  border-top: 1px solid var(--color-border);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
}

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

footer a:hover {
  text-decoration: underline;
}

footer p {
  margin: 0;
}

.theme-toggle-wrapper {
  margin-left: auto;
}

#theme-toggle {
  padding: 0.25em 0.5em;
  font-size: 1.25rem;
  background: none;
  border: none;
  cursor: pointer;
  color: var(--color-text-muted);
}

#theme-toggle:hover {
  color: var(--color-link);
}

/* Responsive: larger screens */
@media (min-width: 640px) {
  body {
    font-size: 1.0625rem;
  }

  nav,
  main,
  footer {
    padding: 2rem var(--spacing);
  }

  main h1 {
    font-size: 2rem;
  }

  main h2 {
    font-size: 1.375rem;
  }
}