/* Calvert Technology Law / Austin Patent Firm */
:root {
  /* Cool Austin: bluebonnet + Town Lake + cool stone */
  --bg: #eef1f4;          /* cool stone */
  --bg-2: #dde3ea;        /* misty morning */
  --paper: #ffffff;
  --ink: #0f1d2e;         /* deep Town Lake at dusk */
  --ink-2: #243446;
  --muted: #5d6b7a;
  --rule: #c2cbd5;        /* fog grey */
  --accent: #2f5f8f;      /* bluebonnet sky */
  --accent-2: #4a7c9a;    /* shallow water */
  --serif: 'Source Serif 4', Georgia, 'Times New Roman', serif;
  --sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Helvetica, Arial, sans-serif;
  --mono: 'JetBrains Mono', ui-monospace, Menlo, monospace;
  --maxw: 1240px;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: var(--sans);
  font-size: 17px; line-height: 1.6;
  color: var(--ink);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

a { color: var(--ink); text-decoration: underline; text-decoration-color: var(--rule); text-underline-offset: 3px; transition: color .15s, text-decoration-color .15s; }
a:hover { color: var(--accent); text-decoration-color: var(--accent); }

h1, h2, h3, h4 {
  font-family: var(--serif);
  font-weight: 500;
  letter-spacing: -0.015em;
  color: var(--ink);
  margin: 0 0 .4em;
  text-wrap: balance;
}
h1 { font-size: clamp(2.6rem, 5.4vw, 4.6rem); line-height: 1.08; letter-spacing: -0.025em; font-weight: 450; }
h2 { font-size: clamp(1.8rem, 2.8vw, 2.5rem); line-height: 1.1; }
h3 { font-size: 1.25rem; line-height: 1.3; }
p { margin: 0 0 1em; text-wrap: pretty; }
.lede { font-family: var(--serif); font-size: clamp(1.2rem, 1.7vw, 1.5rem); line-height: 1.45; color: var(--ink-2); font-weight: 400; }
.eyebrow {
  font-family: var(--mono);
  font-size: .72rem;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--muted);
  display: inline-block;
}

.container { max-width: var(--maxw); margin: 0 auto; padding: 0 32px; }

/* HEADER */
.site-header {
  position: sticky; top: 0; z-index: 20;
  background: color-mix(in oklab, var(--bg) 92%, transparent);
  backdrop-filter: saturate(1.4) blur(8px);
  border-bottom: 1px solid var(--rule);
}
.site-header .inner {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 18px 32px;
  display: flex; align-items: center; justify-content: space-between;
  gap: 24px;
}
.brand { display: flex; align-items: center; gap: 14px; text-decoration: none; color: var(--ink); }
.brand:hover { color: var(--ink); }
.brand-mark {
  width: 40px; height: 40px;
  border: 1px solid var(--ink);
  display: grid; place-items: center;
  font-family: var(--serif); font-size: 1.15rem; font-style: italic;
  background: var(--paper);
}
.brand-name { font-family: var(--serif); font-size: 1.18rem; line-height: 1.1; letter-spacing: -0.01em; }
.brand-name small { display: block; font-family: var(--mono); font-size: .62rem; letter-spacing: .18em; text-transform: uppercase; color: var(--muted); margin-top: 4px; font-weight: 500; }

.nav { display: flex; gap: 28px; align-items: center; }
.nav a {
  font-size: .92rem;
  text-decoration: none;
  color: var(--ink-2);
  padding: 4px 0;
  border-bottom: 1px solid transparent;
}
.nav a:hover { color: var(--ink); border-bottom-color: var(--ink); }
.nav a.active { color: var(--ink); border-bottom-color: var(--ink); }
.nav .cta {
  background: var(--ink); color: var(--bg);
  padding: 10px 18px;
  border: 1px solid var(--ink);
}
.nav .cta:hover { background: transparent; color: var(--ink); border-color: var(--ink); }

/* HAMBURGER TOGGLE */
.nav-toggle {
  display: none;
  background: none;
  border: 1px solid var(--ink);
  padding: 9px 13px;
  cursor: pointer;
  font-size: 1.1rem;
  color: var(--ink);
  line-height: 1;
  flex-shrink: 0;
  transition: background .15s, color .15s;
}
.nav-toggle:hover { background: var(--ink); color: var(--bg); }

@media (max-width: 760px) {
  .site-header .inner { flex-wrap: wrap; padding-bottom: 0; }
  .nav-toggle { display: block; }
  .nav {
    display: none;
    width: 100%;
    flex-direction: column;
    gap: 0;
    padding: 4px 0 16px;
    border-top: 1px solid var(--rule);
  }
  .nav.open { display: flex; }
  .nav a:not(.cta) {
    display: block;
    padding: 14px 0;
    border-bottom: 1px solid var(--rule);
    font-size: 1rem;
  }
  .nav a.cta { margin-top: 16px; text-align: center; }
}

/* HERO */
.hero {
  padding: 120px 0 96px;
  position: relative;
  border-bottom: 1px solid var(--rule);
}
.hero h1 { max-width: 16ch; margin-top: 24px; padding-bottom: 0.12em; }
.hero h1 em { font-style: italic; color: var(--accent); font-weight: 450; }
.hero .lede { max-width: 44ch; margin-top: 36px; }
.hero-meta {
  margin-top: 56px;
  display: grid; gap: 1px;
  background: var(--rule);
  border-top: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
}
@media (min-width: 760px) { .hero-meta { grid-template-columns: repeat(4, 1fr); } }
.hero-meta > div {
  background: var(--bg);
  padding: 22px 24px;
}
.hero-meta .k { font-family: var(--mono); font-size: .68rem; letter-spacing: .18em; text-transform: uppercase; color: var(--muted); margin-bottom: 6px; }
.hero-meta .v { font-family: var(--serif); font-size: 1.1rem; line-height: 1.25; }

/* SECTIONS */
section.block {
  padding: 96px 0;
  border-bottom: 1px solid var(--rule);
}
section.block:last-of-type { border-bottom: none; }

.section-head {
  display: grid; gap: 32px;
  margin-bottom: 56px;
  align-items: end;
}
@media (min-width: 820px) { .section-head { grid-template-columns: 1.2fr 1fr; } }
.section-head h2 { margin: 0; max-width: 18ch; }
.section-head .lede { margin: 0; max-width: 44ch; }

/* PRACTICE — editorial list */
.practice-list { border-top: 1px solid var(--rule); }
.practice-row {
  display: grid; gap: 24px;
  padding: 36px 0;
  border-bottom: 1px solid var(--rule);
  align-items: start;
}
@media (min-width: 820px) { .practice-row { grid-template-columns: 80px 280px 1fr; gap: 48px; } }
.practice-row .num { font-family: var(--mono); font-size: .8rem; letter-spacing: .14em; color: var(--muted); padding-top: 10px; }
.practice-row h3 { font-size: 1.55rem; margin: 0; line-height: 1.15; }
.practice-row .body { color: var(--ink-2); }
.practice-row .body p:last-child { margin-bottom: 0; }
.practice-row ul { padding-left: 18px; margin: 12px 0 0; color: var(--ink-2); }
.practice-row ul li { margin-bottom: 4px; }

/* TECH GRID */
.tech-grid {
  display: grid; gap: 1px;
  background: var(--rule);
  border: 1px solid var(--rule);
}
@media (min-width: 720px) { .tech-grid { grid-template-columns: 1fr 1fr; } }
@media (min-width: 1000px) { .tech-grid { grid-template-columns: 1fr 1fr 1fr; } }
.tech-card {
  background: var(--bg);
  padding: 32px 28px;
  display: flex; flex-direction: column; gap: 10px;
  min-height: 200px;
  transition: background .15s;
}
.tech-card:hover { background: var(--paper); }
.tech-card .num { font-family: var(--mono); font-size: .68rem; letter-spacing: .18em; text-transform: uppercase; color: var(--muted); }
.tech-card h3 { margin: 0; font-size: 1.2rem; line-height: 1.25; }
.tech-card p { margin: 0; color: var(--ink-2); font-size: .94rem; }

/* QUOTE / PULL */
.pull {
  font-family: var(--serif);
  font-size: clamp(1.6rem, 3vw, 2.4rem);
  line-height: 1.2;
  letter-spacing: -0.015em;
  color: var(--ink);
  max-width: 28ch;
  text-wrap: balance;
}

/* BIO */
.bio-grid { display: grid; gap: 56px; align-items: start; }
@media (min-width: 900px) { .bio-grid { grid-template-columns: 360px 1fr; } }
.headshot {
  aspect-ratio: 4/5;
  border: 1px solid var(--rule);
  overflow: hidden;
  position: relative;
}
.headshot img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center top;
  display: block;
}
.bio-body h2 { margin-top: 0; }
.facts {
  margin-top: 48px;
  border-top: 1px solid var(--rule);
}
.facts-row {
  display: grid; gap: 16px;
  padding: 20px 0;
  border-bottom: 1px solid var(--rule);
}
@media (min-width: 640px) { .facts-row { grid-template-columns: 200px 1fr; gap: 32px; } }
.facts-row dt { font-family: var(--mono); font-size: .68rem; letter-spacing: .18em; text-transform: uppercase; color: var(--muted); padding-top: 4px; }
.facts-row dd { margin: 0; color: var(--ink-2); }

/* CONTACT */
.contact-grid { display: grid; gap: 1px; background: var(--rule); border: 1px solid var(--rule); }
@media (min-width: 760px) { .contact-grid { grid-template-columns: 1fr 1fr; } }
.contact-card {
  background: var(--bg);
  padding: 40px 36px;
}
.contact-card .eyebrow { margin-bottom: 14px; }
.contact-card h3 { margin: 0 0 16px; font-size: 1.4rem; }
.contact-line {
  font-family: var(--serif);
  font-size: 1.5rem;
  line-height: 1.3;
  margin: 0 0 6px;
}
.contact-line a { text-decoration: none; }

/* CTA */
.cta {
  background: var(--ink);
  color: var(--bg);
  padding: 110px 0;
  position: relative;
}
.cta h2 { color: var(--bg); max-width: 22ch; margin-bottom: 16px; }
.cta .lede { color: rgba(246, 243, 236, 0.8); max-width: 50ch; }
.cta .eyebrow { color: rgba(246, 243, 236, 0.55); margin-bottom: 24px; }
.cta-actions { margin-top: 40px; display: flex; gap: 16px; flex-wrap: wrap; }

.btn {
  display: inline-block;
  font-family: var(--sans);
  font-size: .95rem;
  text-decoration: none;
  padding: 14px 24px;
  border: 1px solid currentColor;
  background: transparent;
  color: var(--ink);
  letter-spacing: .005em;
  transition: background .15s, color .15s;
}
.btn:hover { background: var(--ink); color: var(--bg); border-color: var(--ink); }
.btn-primary { background: var(--ink); color: var(--bg); border-color: var(--ink); }
.btn-primary:hover { background: transparent; color: var(--ink); border-color: var(--ink); }
.cta .btn-primary { background: var(--bg); color: var(--ink); border-color: var(--bg); }
.cta .btn-primary:hover { background: transparent; color: var(--bg); border-color: var(--bg); }
.cta .btn { color: var(--bg); border-color: rgba(246, 243, 236, 0.4); }
.cta .btn:hover { background: var(--bg); color: var(--ink); border-color: var(--bg); }

/* FOOTER */
.site-footer {
  background: var(--bg-2);
  padding: 64px 0 32px;
  font-size: .9rem;
  color: var(--muted);
  border-top: 1px solid var(--rule);
}
.footer-grid { display: grid; gap: 40px; }
@media (min-width: 820px) { .footer-grid { grid-template-columns: 1.6fr 1fr 1fr 1fr; } }
.site-footer h4 { font-family: var(--mono); font-size: .68rem; letter-spacing: .18em; text-transform: uppercase; color: var(--ink); font-weight: 600; margin: 0 0 14px; }
.site-footer ul { list-style: none; padding: 0; margin: 0; display: grid; gap: 8px; }
.site-footer a { color: var(--ink-2); text-decoration: none; }
.site-footer a:hover { color: var(--accent); }
.footer-bottom {
  border-top: 1px solid var(--rule);
  margin-top: 40px; padding-top: 20px;
  display: flex; flex-wrap: wrap; gap: 16px; justify-content: space-between;
  font-family: var(--mono); font-size: .66rem; letter-spacing: .14em; text-transform: uppercase;
}

/* PAGE HEAD (interior pages) */
.page-head {
  padding: 100px 0 72px;
  border-bottom: 1px solid var(--rule);
}
.page-head .eyebrow { margin-bottom: 18px; }
.page-head h1 { font-size: clamp(2.2rem, 4vw, 3.4rem); max-width: 18ch; }
.page-head .lede { margin-top: 24px; max-width: 52ch; }

/* PROSE */
.prose { max-width: 68ch; }
.prose h2 { margin-top: 1.8em; }
.prose h3 { margin-top: 1.4em; font-size: 1.15rem; }
.prose ul { padding-left: 20px; }
.prose li { margin-bottom: 6px; }

/* DECORATIVE — corner mark */
.cornermark {
  position: absolute;
  font-family: var(--mono);
  font-size: .66rem;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--muted);
}

/* TWO-UP */
.twoup { display: grid; gap: 56px; }
@media (min-width: 820px) { .twoup { grid-template-columns: 1fr 1.2fr; } }
.twoup .left h2 { margin: 0; max-width: 14ch; }
.twoup .left .eyebrow { margin-bottom: 18px; }