/* ── Tokens – lyst tema (standard) ────────────────────── */
:root {
  --color-bg:          #ffffff;
  --color-surface:     #f6f8fa;
  --color-surface-2:   #eaeef2;
  --color-border:      #d0d7de;
  --color-text:        #1f2328;
  --color-text-muted:  #636c76;
  --color-accent:      #0969da;
  --color-accent-dim:  #ddf4ff;
  --nav-bg:            rgba(255, 255, 255, 0.88);

  --font-sans: "Inter", system-ui, -apple-system, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, monospace;

  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;

  --transition: 180ms ease;

  --max-width: 1100px;
  --nav-height: 60px;
}

/* ── Mørkt tema ────────────────────────────────────────── */
[data-theme="dark"] {
  --color-bg:          #0d1117;
  --color-surface:     #161b22;
  --color-surface-2:   #21262d;
  --color-border:      #30363d;
  --color-text:        #e6edf3;
  --color-text-muted:  #7d8590;
  --color-accent:      #3b8fd4;
  --color-accent-dim:  #1a3a5c;
  --nav-bg:            rgba(13, 17, 23, 0.85);
}

/* ── Reset ─────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-sans);
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
  min-height: 100vh;
}

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

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

/* ── Layout helpers ────────────────────────────────────── */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin-inline: auto;
  padding-inline: 1.5rem;
}

/* ── Navigation ────────────────────────────────────────── */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--nav-height);
  background: var(--nav-bg);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
}

.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.nav__logo {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--color-text);
  letter-spacing: -0.02em;
}

.nav__logo span { color: var(--color-accent); }

.nav__links {
  display: flex;
  gap: 0.25rem;
  list-style: none;
}

.nav__links a {
  display: block;
  padding: 0.4rem 0.75rem;
  border-radius: var(--radius-sm);
  font-size: 0.875rem;
  color: var(--color-text-muted);
  transition: color var(--transition), background var(--transition);
}

.nav__links a:hover,
.nav__links a.active {
  color: var(--color-text);
  background: var(--color-surface-2);
  text-decoration: none;
}

/* ── About block ───────────────────────────────────────── */
.about-block {
  max-width: 560px;
}

.about-block__title {
  font-size: clamp(1.25rem, 3vw, 1.75rem);
  font-weight: 800;
  letter-spacing: -0.025em;
  margin-bottom: 0.5rem;
}

.about-block__text {
  color: var(--color-text-muted);
  font-size: 0.95rem;
  line-height: 1.7;
}

/* ── Section ───────────────────────────────────────────── */
.section {
  padding: 3rem 0 4rem;
}

.section__title {
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  margin-bottom: 1.5rem;
}

/* ── Footer ────────────────────────────────────────────── */
.footer {
  border-top: 1px solid var(--color-border);
  padding: 2rem 0;
  margin-top: 4rem;
  color: var(--color-text-muted);
  font-size: 0.8rem;
}

.footer__inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
}

/* ── Temaskift-knap ────────────────────────────────────── */
.theme-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border);
  background: transparent;
  color: var(--color-text-muted);
  font-size: 1rem;
  cursor: pointer;
  flex-shrink: 0;
  margin-left: 0.5rem;
  transition: color var(--transition), background var(--transition), border-color var(--transition);
}

.theme-toggle:hover {
  color: var(--color-text);
  background: var(--color-surface-2);
  border-color: var(--color-text-muted);
}

/* ── Hamburger-knap ────────────────────────────────────── */
.nav__hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 34px;
  height: 34px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border);
  background: transparent;
  cursor: pointer;
  padding: 0 8px;
  flex-shrink: 0;
  transition: background var(--transition), border-color var(--transition);
}

.nav__hamburger span {
  display: block;
  height: 2px;
  background: var(--color-text-muted);
  border-radius: 2px;
  transition: transform var(--transition), opacity var(--transition), background var(--transition);
}

.nav__hamburger:hover {
  background: var(--color-surface-2);
  border-color: var(--color-text-muted);
}

.nav__hamburger:hover span { background: var(--color-text); }

/* Hamburger → kryds når menuen er åben */
.nav--open .nav__hamburger span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav--open .nav__hamburger span:nth-child(2) { opacity: 0; }
.nav--open .nav__hamburger span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ── Responsive nav ────────────────────────────────────── */
@media (max-width: 640px) {
  .nav__hamburger { display: flex; }

  .nav__links {
    display: none;
    position: absolute;
    top: var(--nav-height);
    left: 0;
    right: 0;
    flex-direction: column;
    gap: 0.25rem;
    padding: 0.75rem;
    background: var(--nav-bg);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--color-border);
    z-index: 99;
  }

  .nav--open .nav__links { display: flex; }

  .nav__links a {
    padding: 0.6rem 0.75rem;
    font-size: 0.95rem;
  }
}