/* ==========================================================================
   Henrik — personal site
   Dark, code-editor inspired theme
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=JetBrains+Mono:wght@400;500;600;700&family=Inter:wght@400;500;600;700&display=swap');

:root {
  --bg: #0d1117;
  --bg-alt: #12181f;
  --surface: #161b22;
  --border: #2a313c;
  --text: #e6edf3;
  --text-dim: #8b949e;
  --accent: #2dd4bf;
  --accent-soft: rgba(45, 212, 191, 0.12);
  --accent-2: #e3b341;
  --header-bg: rgba(13, 17, 23, 0.85);
  --placeholder-bg: #30363d;
  --btn-primary-text: #04201c;

  --font-mono: 'JetBrains Mono', 'Fira Code', ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;

  --container-width: 1080px;
  --radius: 10px;
}

/*
  Theme resolution order:
  1. Explicit choice from the dropdown, stored as [data-theme="light"|"dark"|"90s"] — always wins.
  2. Otherwise ("standard", no attribute set), the OS/browser's prefers-color-scheme setting.
  3. Otherwise (no preference detected), dark — the :root defaults above.
*/
@media (prefers-color-scheme: light) {
  :root:not([data-theme]) {
    --bg: #ffffff;
    --bg-alt: #f6f8fa;
    --surface: #f6f8fa;
    --border: #d0d7de;
    --text: #1b1f24;
    --text-dim: #57606a;
    --accent: #0f9d8c;
    --accent-soft: rgba(15, 157, 140, 0.1);
    --accent-2: #9a6700;
    --header-bg: rgba(255, 255, 255, 0.85);
    --placeholder-bg: #d0d7de;
  }
}

:root[data-theme='light'] {
  --bg: #ffffff;
  --bg-alt: #f6f8fa;
  --surface: #f6f8fa;
  --border: #d0d7de;
  --text: #1b1f24;
  --text-dim: #57606a;
  --accent: #0f9d8c;
  --accent-soft: rgba(15, 157, 140, 0.1);
  --accent-2: #9a6700;
  --header-bg: rgba(255, 255, 255, 0.85);
  --placeholder-bg: #d0d7de;
}

/*
  90s mode — placeholder, no rules yet. [data-theme="90s"] falls through to the
  dark :root defaults above for now; come back and give this its own Y2K look later.
*/

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-sans);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  transition: background-color 0.15s ease, color 0.15s ease;
}

.container {
  width: 100%;
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 24px;
}

a {
  color: inherit;
  text-decoration: none;
}

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

.dim {
  color: var(--text-dim);
}

.mono {
  font-family: var(--font-mono);
}

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

.site-header {
  border-bottom: 1px solid var(--border);
  background: var(--header-bg);
  backdrop-filter: blur(8px);
  position: sticky;
  top: 0;
  z-index: 10;
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 18px;
  padding-bottom: 18px;
  gap: 24px;
}

.logo {
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: 1.05rem;
  letter-spacing: -0.02em;
  white-space: nowrap;
}

.nav-links {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  margin: 0;
  padding: 0;
  font-family: var(--font-mono);
  font-size: 0.9rem;
}

.nav-links a {
  display: inline-block;
  padding: 8px 12px;
  border-radius: 6px;
  color: var(--text-dim);
  transition: color 0.15s ease, background 0.15s ease;
}

.nav-links a:hover {
  color: var(--text);
  background: var(--surface);
}

.nav-links a.active {
  color: var(--accent);
  background: var(--accent-soft);
}

.theme-toggle {
  appearance: none;
  -webkit-appearance: none;
  -moz-appearance: none;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  min-width: 132px;
  padding: 8px 30px 8px 12px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background-color: var(--surface);
  color: var(--text);
  cursor: pointer;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='none' stroke='%238b949e' stroke-width='1.5'%3E%3Cpath d='M4 6l4 4 4-4'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 10px center;
  background-size: 11px;
  transition: border-color 0.15s ease, color 0.15s ease;
}

.theme-toggle:hover,
.theme-toggle:focus-visible {
  border-color: var(--accent);
  color: var(--accent);
  outline: none;
}

.theme-toggle option {
  background: var(--surface);
  color: var(--text);
}

/* -------------------------------- Main -------------------------------- */

main {
  min-height: calc(100vh - 250px);
}

.eyebrow {
  font-family: var(--font-mono);
  color: var(--accent);
  font-size: 0.9rem;
  margin: 0 0 12px;
}

.eyebrow::before {
  content: '// ';
  color: var(--text-dim);
}

/* --------------------------------- Hero -------------------------------- */

.hero {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 56px;
  align-items: center;
  padding: 72px 24px 64px;
}

.hero h1 {
  font-family: var(--font-mono);
  font-size: clamp(2rem, 4vw, 2.8rem);
  margin: 0 0 8px;
  letter-spacing: -0.02em;
}

.cursor {
  display: inline-block;
  margin-left: 2px;
  animation: blink-cursor 1s step-end infinite;
}

@keyframes blink-cursor {
  0%, 49% { opacity: 1; }
  50%, 100% { opacity: 0; }
}

@media (prefers-reduced-motion: reduce) {
  .cursor {
    animation: none;
  }
}

.subtitle {
  font-size: 1.05rem;
  color: var(--text-dim);
  margin: 0 0 24px;
}

.lead {
  font-size: 1.05rem;
  color: var(--text);
  max-width: 60ch;
  margin: 0 0 32px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
}

.todo {
  color: var(--accent-2);
  font-weight: 700;
}

.social-links {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-top: 20px;
  font-family: var(--font-mono);
  font-size: 0.9rem;
}

.social-links a {
  border-bottom: 1px dashed var(--border);
  padding-bottom: 2px;
}

.social-links a:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.btn {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.92rem;
  padding: 12px 20px;
  border-radius: 8px;
  border: 1px solid transparent;
  transition: transform 0.15s ease, background 0.15s ease, border-color 0.15s ease;
}

.btn-primary {
  background: var(--accent);
  color: #04201c;
  font-weight: 600;
}

.btn-primary:hover {
  transform: translateY(-1px);
  background: #3ee0c9;
}

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

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

.hero-image {
  display: flex;
  justify-content: center;
}

.placeholder-img {
  width: 100%;
  max-width: 300px;
  aspect-ratio: 1 / 1;
  background: var(--placeholder-bg);
  border-radius: 50%;
  border: 1px solid var(--border);
}

/* ------------------------------ Link cards ----------------------------- */

.section-heading {
  padding: 0 24px;
  max-width: var(--container-width);
  margin: 0 auto;
}

.section-heading h2 {
  font-family: var(--font-mono);
  font-size: 1.4rem;
  margin: 0 0 32px;
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 20px;
  padding: 0 24px 80px;
  max-width: var(--container-width);
  margin: 0 auto;
}

.card {
  display: block;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px;
  transition: border-color 0.15s ease, transform 0.15s ease;
}

.card:hover {
  border-color: var(--accent);
  transform: translateY(-2px);
}

.card h3 {
  font-family: var(--font-mono);
  font-size: 1.02rem;
  margin: 0 0 8px;
  color: var(--accent-2);
}

.card p {
  margin: 0;
  color: var(--text-dim);
  font-size: 0.92rem;
}

/* --------------------------- Simple page body --------------------------- */

.page-body {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 72px 24px 96px;
}

.page-body h1 {
  font-family: var(--font-mono);
  font-size: clamp(1.8rem, 3.5vw, 2.4rem);
  margin: 0 0 20px;
}

.page-body p {
  max-width: 65ch;
  color: var(--text-dim);
}

.page-body section + section {
  margin-top: 40px;
}

.page-body h2 {
  font-family: var(--font-mono);
  font-size: 1.2rem;
  color: var(--accent-2);
  margin: 0 0 12px;
}

.page-body > .btn {
  margin-bottom: 40px;
}

.timeline-item {
  margin-bottom: 20px;
}

.timeline-item:last-child {
  margin-bottom: 0;
}

.timeline-header {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: baseline;
  gap: 8px 16px;
}

.timeline-header h3 {
  font-family: var(--font-mono);
  font-size: 1.05rem;
  margin: 0;
  color: var(--text);
}

.timeline-item p {
  margin: 4px 0 0;
}

.skills-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.skills-list li {
  font-size: 0.98rem;
  color: var(--text-dim);
}

.badge {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--accent-2);
  background: rgba(227, 179, 65, 0.1);
  border: 1px solid rgba(227, 179, 65, 0.3);
  padding: 5px 12px;
  border-radius: 999px;
  margin-bottom: 20px;
}

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

.site-footer {
  border-top: 1px solid var(--border);
  padding: 28px 0;
}

.site-footer .container {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  justify-content: space-between;
  color: var(--text-dim);
  font-size: 0.88rem;
}

/* ------------------------------ Responsive ------------------------------ */

@media (max-width: 800px) {
  .hero {
    grid-template-columns: 1fr;
    padding-top: 48px;
  }

  .hero-image {
    order: -1;
  }

  .placeholder-img {
    max-width: 180px;
  }

  .nav {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
  }

  .nav-links {
    width: 100%;
  }
}