/* dev.phatt.tech — minimal, readable, system-first */

:root {
  --bg: #ffffff;
  --bg-soft: #f7f7f5;
  --fg: #18181b;
  --fg-muted: #52525b;
  --fg-faint: #a1a1aa;
  --rule: #e4e4e7;
  --rule-strong: #d4d4d8;
  --accent: #16a34a;
  --accent-soft: #dcfce7;
  --code-bg: #f4f4f5;
  --max-w: 720px;
  --max-w-wide: 920px;
  --font-sans: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, "Liberation Mono", monospace;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0a0a0b;
    --bg-soft: #131316;
    --fg: #e4e4e7;
    --fg-muted: #a1a1aa;
    --fg-faint: #71717a;
    --rule: #27272a;
    --rule-strong: #3f3f46;
    --accent: #22c55e;
    --accent-soft: rgba(34, 197, 94, 0.12);
    --code-bg: #18181b;
  }
}

* { box-sizing: border-box; }

html {
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Layout */

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

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

/* Header / nav */

.site-header {
  border-bottom: 1px solid var(--rule);
  padding: 20px 0;
  margin-bottom: 48px;
}

.site-header .container-wide {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  font-weight: 600;
  font-size: 15px;
  color: var(--fg);
  text-decoration: none;
  letter-spacing: -0.01em;
}

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

.site-nav {
  display: flex;
  gap: 24px;
  flex-wrap: wrap;
}

.site-nav a {
  color: var(--fg-muted);
  text-decoration: none;
  font-size: 14px;
  transition: color 0.1s ease;
}

.site-nav a:hover,
.site-nav a[aria-current="page"] {
  color: var(--fg);
}

/* Typography */

h1 {
  font-size: 36px;
  line-height: 1.2;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin: 0 0 24px;
}

h2 {
  font-size: 22px;
  line-height: 1.3;
  font-weight: 600;
  letter-spacing: -0.01em;
  margin: 48px 0 16px;
}

h3 {
  font-size: 16px;
  line-height: 1.4;
  font-weight: 600;
  margin: 0 0 4px;
  color: var(--fg);
}

p {
  margin: 0 0 16px;
  color: var(--fg);
}

p.lede {
  font-size: 18px;
  color: var(--fg-muted);
  line-height: 1.5;
}

.muted { color: var(--fg-muted); }
.faint { color: var(--fg-faint); }
.mono  { font-family: var(--font-mono); font-size: 0.92em; }

a {
  color: var(--fg);
  text-decoration: underline;
  text-decoration-color: var(--rule-strong);
  text-underline-offset: 3px;
  text-decoration-thickness: 1px;
}

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

hr {
  border: 0;
  border-top: 1px solid var(--rule);
  margin: 48px 0;
}

/* Sections */

section {
  margin-bottom: 48px;
}

.lede-block {
  padding-bottom: 32px;
  margin-bottom: 32px;
  border-bottom: 1px solid var(--rule);
}

.lede-block .lede {
  margin-top: 16px;
}

/* Offerings grid */

.offerings {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
  margin: 0 0 32px;
}

@media (min-width: 640px) {
  .offerings { grid-template-columns: 1fr 1fr; gap: 32px; }
}

.offering {
  padding: 20px;
  border: 1px solid var(--rule);
  border-radius: 6px;
  background: var(--bg);
}

.offering h3 {
  margin-bottom: 8px;
}

.offering p {
  font-size: 14px;
  color: var(--fg-muted);
  margin: 0;
  line-height: 1.55;
}

/* Project cards */

.projects {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
  margin: 0;
}

.project {
  padding: 24px;
  border: 1px solid var(--rule);
  border-radius: 6px;
  background: var(--bg);
}

.project h3 {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 8px;
}

.project .tag {
  font-size: 12px;
  font-weight: 500;
  color: var(--fg-muted);
  font-family: var(--font-mono);
}

.project p {
  font-size: 14px;
  color: var(--fg-muted);
  line-height: 1.6;
  margin: 0 0 12px;
}

.project .meta {
  font-size: 13px;
  color: var(--fg-faint);
  font-family: var(--font-mono);
}

/* How we work */

.how-we-work {
  padding: 24px;
  background: var(--bg-soft);
  border-radius: 6px;
  margin: 32px 0 48px;
}

.how-we-work h2 { margin-top: 0; }

.how-we-work ul {
  margin: 0;
  padding: 0;
  list-style: none;
}

.how-we-work li {
  padding: 8px 0 8px 24px;
  position: relative;
  color: var(--fg-muted);
  font-size: 15px;
  line-height: 1.55;
}

.how-we-work li::before {
  content: "—";
  position: absolute;
  left: 0;
  color: var(--accent);
  font-family: var(--font-mono);
}

/* Code */

code {
  font-family: var(--font-mono);
  font-size: 0.88em;
  background: var(--code-bg);
  padding: 1px 6px;
  border-radius: 4px;
}

pre {
  background: var(--code-bg);
  border: 1px solid var(--rule);
  padding: 16px;
  border-radius: 6px;
  overflow-x: auto;
  font-size: 13px;
  line-height: 1.5;
}

pre code {
  background: transparent;
  padding: 0;
}

/* Footer */

.site-footer {
  border-top: 1px solid var(--rule);
  padding: 40px 0 32px;
  margin-top: 64px;
}

.site-footer .container-wide {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.site-footer .col {
  display: flex;
  flex-wrap: wrap;
  gap: 16px 24px;
  align-items: baseline;
}

.site-footer .copy {
  font-size: 13px;
  color: var(--fg-muted);
}

.site-footer .changelog {
  font-size: 13px;
  color: var(--fg-faint);
  font-family: var(--font-mono);
}

.site-footer .line {
  font-size: 13px;
  color: var(--fg-muted);
  font-style: italic;
}

/* Page hero */

.page-hero {
  padding: 16px 0 32px;
  border-bottom: 1px solid var(--rule);
  margin-bottom: 32px;
}

.page-hero h1 {
  margin: 0 0 8px;
}

.page-hero .lede {
  margin: 0;
}

/* Smaller text */

.small {
  font-size: 13px;
  color: var(--fg-muted);
}

/* Skip nav (a11y nicety) */

.skip {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--fg);
  color: var(--bg);
  padding: 8px 12px;
  border-radius: 0 0 4px 4px;
  z-index: 10;
}

.skip:focus { left: 0; }