/* ---------- Tokens ---------- */
:root {
  --bg: #f7f8fa;
  --panel: #ffffff;
  --ink: #16181d;
  --ink-2: #4a4f58;
  --ink-3: #838994;
  --line: #e3e6ea;
  --line-2: #eef0f3;
  --accent: #2f6bc4;                    /* fallback for browsers without oklch() */
  --accent: oklch(0.55 0.13 252);
  --shadow: 0 1px 2px rgba(16, 18, 24, .04), 0 8px 24px -12px rgba(16, 18, 24, .10);
  --mono: ui-monospace, SFMono-Regular, Menlo, monospace;
}

[data-theme="dark"] {
  --bg: #101216;
  --panel: #171a1f;
  --ink: #f2f3f5;
  --ink-2: #a8aeb8;
  --ink-3: #6f757f;
  --line: #262a31;
  --line-2: #1f2329;
  --accent: #6a9fe0;
  --accent: oklch(0.72 0.11 252);
  --shadow: 0 1px 2px rgba(0, 0, 0, .3), 0 8px 24px -12px rgba(0, 0, 0, .5);
}

/* ---------- Base ---------- */
* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "Helvetica Neue", Helvetica, Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
  transition: background .25s ease, color .25s ease;
}

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

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { transition: none !important; }
}

/* Shared max-width container used by header, sections and footer. */
.hero, .projects, .about, .contact, .site-header .bar, .site-footer .bar {
  max-width: 1000px;
  margin: 0 auto;
  padding-left: 32px;
  padding-right: 32px;
}

/* ---------- Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: color-mix(in srgb, var(--bg) 85%, transparent);
  -webkit-backdrop-filter: saturate(180%) blur(14px);
  backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid var(--line);
}

.site-header .bar {
  height: 60px;
  display: flex;
  align-items: center;
  gap: 28px;
}

.brand { display: flex; align-items: center; gap: 10px; color: var(--ink); }
.brand:hover { color: var(--ink); }

.mark {
  width: 26px;
  height: 26px;
  border-radius: 7px;
  background: var(--accent);
  color: #fff;
  display: grid;
  place-items: center;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .04em;
  flex: none;
}

.mark-sm { width: 22px; height: 22px; border-radius: 6px; font-size: 9.5px; letter-spacing: 0; }

.brand-name { font-size: 14.5px; font-weight: 600; letter-spacing: -.01em; }

.site-header .nav {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 24px;
  font-size: 13.5px;
}

.site-header .nav a { color: var(--ink-2); }
.site-header .nav a:hover { color: var(--ink); }

.theme-toggle {
  width: 30px;
  height: 30px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
  color: var(--ink-2);
  font-size: 13px;
  cursor: pointer;
  display: grid;
  place-items: center;
  padding: 0;
  flex: none;
}

.theme-toggle:hover { color: var(--ink); border-color: var(--ink-3); }

/* ---------- Hero ---------- */
.hero { padding-top: 50px; padding-bottom: 72px; }

.eyebrow {
  font-family: var(--mono);
  font-size: 11.5px;
  letter-spacing: .12em;
  color: var(--ink-3);
  text-transform: uppercase;
  margin-bottom: 22px;
}

.hero h1 {
  margin: 0;
  font-size: 52px;
  line-height: 1.08;
  letter-spacing: -.028em;
  font-weight: 600;
  max-width: 15ch;
  text-wrap: pretty;
}

.lede {
  margin: 24px 0 0;
  font-size: 19px;
  line-height: 1.55;
  color: var(--ink-2);
  max-width: 54ch;
  text-wrap: pretty;
}

.actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 32px; }
.actions-center { justify-content: center; }

.btn {
  display: inline-flex;
  align-items: center;
  height: 42px;
  padding: 0 20px;
  border-radius: 10px;
  font-size: 14.5px;
  font-weight: 500;
}

.btn-primary { background: var(--accent); color: #fff; border: 1px solid transparent; }
.btn-primary:hover { color: #fff; opacity: .9; }

.btn-secondary { border: 1px solid var(--line); background: var(--panel); color: var(--ink); }
.btn-secondary:hover { border-color: var(--ink-3); color: var(--ink); }

.btn-ghost { border: 1px solid var(--line); background: transparent; color: var(--ink); }
.btn-ghost:hover { border-color: var(--ink-3); color: var(--ink); }

/* ---------- Projects ---------- */
.projects { padding-top: 24px; padding-bottom: 32px; }

.section-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 20px;
  padding-bottom: 18px;
  border-bottom: 1px solid var(--line);
}

.section-label {
  margin: 0;
  font-size: 15px;
  font-weight: 600;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--ink-3);
  font-family: var(--mono);
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 18px;
  margin-top: 26px;
}

.card {
  display: flex;
  flex-direction: column;
  padding: 24px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: var(--panel);
  box-shadow: var(--shadow);
  color: var(--ink);
}

a.card:hover { border-color: var(--ink-3); color: var(--ink); }

.card-head { display: flex; align-items: center; gap: 14px; }

.card-icon { width: 44px; height: 44px; border-radius: 10px; display: block; flex: none; }

.card-icon-placeholder {
  border: 1px dashed var(--line);
  background: repeating-linear-gradient(135deg, var(--line-2) 0 4px, transparent 4px 8px);
}

.card-name { font-size: 17px; font-weight: 600; letter-spacing: -.01em; }
.card-platform { font-size: 12.5px; color: var(--ink-3); margin-top: 3px; }

.badge {
  margin-left: auto;
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: .08em;
  text-transform: uppercase;
  padding: 5px 9px;
  border-radius: 6px;
  white-space: nowrap;
  flex: none;
}

.badge-available {
  background: color-mix(in srgb, var(--accent) 12%, transparent);
  color: var(--accent);
  border: 1px solid transparent;
}

.badge-wip { border: 1px solid var(--line); color: var(--ink-3); }

.card-body {
  margin: 18px 0 0;
  font-size: 14.5px;
  line-height: 1.55;
  color: var(--ink-2);
  text-wrap: pretty;
}

.card-body { flex: 1 0 auto; }

.card-foot {
  margin-top: 20px;
  padding-top: 16px;
  border-top: 1px solid var(--line-2);
  display: flex;
  align-items: center;
  gap: 14px;
  font-size: 13px;
  color: var(--ink-3);
}

.card-cta { color: var(--accent); font-weight: 500; }
.card-meta { margin-left: auto; font-family: var(--mono); font-size: 11.5px; }

/* ---------- About ---------- */
.about { padding-top: 50px; padding-bottom: 50px; }

.about-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 48px;
  align-items: start;
  padding-top: 40px;
  border-top: 1px solid var(--line);
}

.about-headline {
  margin: 20px 0 0;
  font-size: 22px;
  line-height: 1.4;
  letter-spacing: -.015em;
  color: var(--ink);
  max-width: 30ch;
  text-wrap: pretty;
}

.about-body { display: flex; flex-direction: column; gap: 22px; padding-top: 6px; }

.about-body p {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.65;
  color: var(--ink-2);
  text-wrap: pretty;
}

/* ---------- Contact ---------- */
.contact { padding-bottom: 96px; }

.contact-panel {
  padding: 44px;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: var(--panel);
  box-shadow: var(--shadow);
  text-align: center;
}

.contact-panel h2 { margin: 0; font-size: 26px; font-weight: 600; letter-spacing: -.02em; }

.contact-panel p {
  margin: 14px auto 0;
  font-size: 15.5px;
  line-height: 1.6;
  color: var(--ink-2);
  max-width: 46ch;
  text-wrap: pretty;
}

/* ---------- Footer ---------- */
.site-footer { border-top: 1px solid var(--line); }

.site-footer .bar {
  padding-top: 28px;
  padding-bottom: 28px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 16px 24px;
}

.site-footer .host { font-size: 13px; color: var(--ink-2); }

.site-footer .nav {
  margin-left: auto;
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
  font-size: 13px;
}

.site-footer .nav a { color: var(--ink-3); }
.site-footer .nav a:hover { color: var(--ink); }

.copyright { font-family: var(--mono); font-size: 11.5px; color: var(--ink-3); }

/* ---------- Error page ---------- */
.error-page {
  max-width: 1000px;
  margin: 0 auto;
  padding: 120px 32px 140px;
  text-align: center;
}

.error-code {
  font-family: var(--mono);
  font-size: 11.5px;
  letter-spacing: .12em;
  color: var(--ink-3);
  text-transform: uppercase;
  margin-bottom: 22px;
}

.error-page h1 {
  margin: 0;
  font-size: 40px;
  line-height: 1.1;
  letter-spacing: -.028em;
  font-weight: 600;
}

.error-page p {
  margin: 20px auto 0;
  font-size: 17px;
  line-height: 1.55;
  color: var(--ink-2);
  max-width: 46ch;
  text-wrap: pretty;
}

/* ---------- Small screens ---------- */
@media (max-width: 640px) {
  .hero, .projects, .about, .contact,
  .site-header .bar, .site-footer .bar {
    padding-left: 20px;
    padding-right: 20px;
  }

  .hero h1 { font-size: 38px; }
  .lede { font-size: 17px; }
  .contact-panel { padding: 28px 20px; }
  .about-grid { gap: 28px; }
  .btn { width: 100%; justify-content: center; }
  .site-header .nav { gap: 16px; }
  .brand-name { display: none; }
}