/* ============================================
   dweber.org — shared stylesheet
   ============================================ */

:root {
  --color-bg: #ffffff;
  --color-bg-alt: #f6f5f3;
  --color-text: #1c1c1c;
  --color-text-muted: #5c5c5c;
  --color-border: #e5e3df;
  --color-accent: #1a3c34;
  --color-accent-light: #2d5a4e;
  --max-width: 960px;
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

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

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

a:hover {
  text-decoration: underline;
}

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

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

/* ---------- Header / Nav ---------- */

header {
  border-bottom: 1px solid var(--color-border);
  background: var(--color-bg);
  position: sticky;
  top: 0;
  z-index: 10;
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 0;
}

.brand {
  font-size: 1.15rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--color-text);
}

.brand:hover {
  text-decoration: none;
  opacity: 0.8;
}

.nav-links {
  display: flex;
  gap: 28px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-links a {
  color: var(--color-text);
  font-weight: 500;
  font-size: 0.95rem;
}

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

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

.hero {
  padding: 96px 0 72px;
}

.hero-eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--color-accent);
  margin-bottom: 16px;
}

.hero h1 {
  font-size: clamp(2.2rem, 5vw, 3.4rem);
  line-height: 1.1;
  margin: 0 0 20px;
  letter-spacing: -0.02em;
}

.hero p.lead {
  font-size: 1.15rem;
  color: var(--color-text-muted);
  max-width: 620px;
  margin: 0 0 32px;
}

.button-row {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}

.btn {
  display: inline-block;
  padding: 12px 24px;
  border-radius: 6px;
  font-weight: 600;
  font-size: 0.95rem;
}

.btn-primary {
  background: var(--color-accent);
  color: #fff;
}

.btn-primary:hover {
  background: var(--color-accent-light);
  text-decoration: none;
}

.btn-secondary {
  background: transparent;
  color: var(--color-text);
  border: 1px solid var(--color-border);
}

.btn-secondary:hover {
  border-color: var(--color-accent);
  text-decoration: none;
}

/* ---------- Sections ---------- */

section {
  padding: 56px 0;
}

section.alt {
  background: var(--color-bg-alt);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

section h2 {
  font-size: 1.7rem;
  margin: 0 0 24px;
  letter-spacing: -0.01em;
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 24px;
  margin-top: 8px;
}

.card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  padding: 24px;
}

.card h3 {
  margin: 0 0 10px;
  font-size: 1.05rem;
}

.card p {
  margin: 0;
  color: var(--color-text-muted);
  font-size: 0.95rem;
}

/* ---------- About page specifics ---------- */

.page-header {
  padding: 64px 0 40px;
}

.page-header h1 {
  font-size: clamp(2rem, 4vw, 2.6rem);
  margin: 0 0 12px;
  letter-spacing: -0.02em;
}

.page-header p.lead {
  color: var(--color-text-muted);
  font-size: 1.05rem;
  max-width: 640px;
  margin: 0;
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: 48px;
  align-items: start;
}

.avatar-photo {
  width: 100%;
  aspect-ratio: 1 / 1;
  border-radius: 8px;
  object-fit: cover;
  object-position: center 20%;
}

.timeline {
  border-left: 2px solid var(--color-border);
  padding-left: 24px;
  margin: 0;
}

.timeline-item {
  margin-bottom: 28px;
}

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

.timeline-item .date {
  font-size: 0.82rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-accent);
  font-weight: 600;
}

.timeline-item h3 {
  margin: 4px 0 6px;
  font-size: 1.05rem;
}

.timeline-item p {
  margin: 0;
  color: var(--color-text-muted);
  font-size: 0.95rem;
}

.skills-list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  padding: 0;
  margin: 16px 0 0;
  list-style: none;
}

.skills-list li {
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: 999px;
  padding: 6px 14px;
  font-size: 0.88rem;
}

@media (max-width: 640px) {
  .about-grid {
    grid-template-columns: 1fr;
  }
  .avatar-photo {
    max-width: 180px;
    margin: 0 auto;
  }
}

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

footer {
  border-top: 1px solid var(--color-border);
  padding: 32px 0;
  margin-top: 32px;
}

footer .container {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
  justify-content: space-between;
  color: var(--color-text-muted);
  font-size: 0.88rem;
}

footer a {
  color: var(--color-text-muted);
}