/* prota-studio — shared site stylesheet
   Brand palette extracted from protastudios.com 2026-04-26.
   See brand/assets/palette.json for canonical values. */

:root {
  --black-900: #0c0407;
  --black-800: #333;
  --black-600: #666;
  --black-300: #b3b3b3;
  --black-100: #e5e5e5;
  --black-50: #f9f9f9;
  --gray-line: #ddd;
  --prota-blue: #487588;
  --prota-blue-mid: #5c8a9e;
  --prota-blue-tint: #e8eef1;
  --gold: #b39d63;
  --white: #ffffff;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Arial, sans-serif;
  color: var(--black-800);
  line-height: 1.55;
  background: var(--white);
}

.container { max-width: 1080px; margin: 0 auto; padding: 0 24px; }
.container-narrow { max-width: 820px; margin: 0 auto; padding: 0 24px; }

/* Top nav */
nav.top {
  padding: 20px 0;
  border-bottom: 1px solid var(--black-100);
  background: var(--white);
  position: sticky; top: 0; z-index: 10;
}
nav.top .container {
  display: flex; align-items: center; justify-content: space-between;
}
nav.top .logo {
  font-weight: 600;
  font-size: 18px;
  color: var(--black-900);
  text-decoration: none;
  letter-spacing: 0.02em;
}
nav.top .logo img { height: 28px; vertical-align: middle; }
nav.top ul {
  list-style: none; padding: 0; margin: 0;
  display: flex; gap: 28px;
}
nav.top a {
  color: var(--black-800);
  text-decoration: none;
  font-size: 14px;
  font-weight: 500;
  transition: color .15s;
}
nav.top a:hover { color: var(--prota-blue); }
nav.top a.cta {
  background: var(--prota-blue);
  color: var(--white);
  padding: 10px 20px;
  border-radius: 6px;
}
nav.top a.cta:hover { background: var(--prota-blue-mid); color: var(--white); }

@media (max-width: 720px) {
  nav.top ul { display: none; }
  nav.top a.cta { display: inline-block; }
}

/* Sections */
section.block { padding: 80px 0; }
section.block.alt { background: var(--black-50); }
section.block.dark {
  background: var(--black-900);
  color: var(--white);
}
section.block.dark h1, section.block.dark h2, section.block.dark h3 { color: var(--white); }
section.block.dark p { color: rgba(255,255,255,0.85); }

.eyebrow {
  display: inline-block;
  background: var(--prota-blue-tint);
  color: var(--prota-blue);
  padding: 6px 14px;
  border-radius: 999px;
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.02em;
  margin-bottom: 24px;
}
section.block.dark .eyebrow {
  background: rgba(255,255,255,0.1);
  color: var(--white);
}

h1 {
  font-size: 56px;
  line-height: 1.05;
  font-weight: 700;
  color: var(--black-900);
  margin: 0 0 24px;
  letter-spacing: -0.02em;
}
h2 {
  font-size: 36px;
  line-height: 1.15;
  font-weight: 700;
  color: var(--black-900);
  margin: 0 0 20px;
  letter-spacing: -0.01em;
}
h2.section { font-size: 28px; margin-bottom: 32px; }
h3 {
  font-size: 22px;
  line-height: 1.25;
  font-weight: 600;
  color: var(--black-900);
  margin: 0 0 12px;
}
.hero p, .lede {
  font-size: 20px;
  line-height: 1.5;
  color: var(--black-800);
  margin: 0 0 24px;
  max-width: 720px;
}
p { font-size: 16px; line-height: 1.65; color: var(--black-800); }
@media (max-width: 720px) {
  h1 { font-size: 36px; }
  h2 { font-size: 26px; }
  .hero p, .lede { font-size: 17px; }
}

.cta-row { display: flex; gap: 14px; flex-wrap: wrap; margin-top: 28px; }
a.btn-primary, button.btn-primary {
  background: var(--prota-blue);
  color: var(--white);
  padding: 14px 26px;
  border-radius: 6px;
  text-decoration: none;
  font-weight: 500;
  font-size: 15px;
  display: inline-block;
  border: 0;
  cursor: pointer;
  transition: background .15s;
}
a.btn-primary:hover, button.btn-primary:hover { background: var(--prota-blue-mid); }
a.btn-secondary {
  background: var(--white);
  color: var(--black-800);
  padding: 13px 25px;
  border: 1px solid var(--black-100);
  border-radius: 6px;
  text-decoration: none;
  font-weight: 500;
  font-size: 15px;
  display: inline-block;
}
a.btn-secondary:hover { border-color: var(--prota-blue); color: var(--prota-blue); }

.trust-strip {
  padding: 24px 0;
  background: var(--white);
  border-top: 1px solid var(--black-100);
  border-bottom: 1px solid var(--black-100);
  text-align: center;
  font-size: 14px;
  color: var(--black-600);
}

/* Cards */
.cards { display: grid; gap: 24px; }
.cards.cols-2 { grid-template-columns: repeat(2, 1fr); }
.cards.cols-3 { grid-template-columns: repeat(3, 1fr); }
.cards.cols-4 { grid-template-columns: repeat(4, 1fr); }
@media (max-width: 900px) {
  .cards.cols-3, .cards.cols-4 { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 600px) {
  .cards.cols-2, .cards.cols-3, .cards.cols-4 { grid-template-columns: 1fr; }
}
.card {
  background: var(--white);
  padding: 32px;
  border-radius: 8px;
  border: 1px solid var(--black-100);
}
section.block.alt .card { background: var(--white); }
.card.featured {
  border-color: var(--prota-blue);
  border-width: 2px;
}
.card .eyebrow { margin-bottom: 16px; }
.card h3 { margin-bottom: 12px; }
.card p { font-size: 15px; }
.card-cta { margin-top: 20px; display: inline-flex; align-items: center; gap: 6px; color: var(--prota-blue); font-weight: 500; font-size: 14px; text-decoration: none; }
.card-cta:hover { color: var(--prota-blue-mid); }
.card-cta::after { content: "→"; transition: transform .15s; }
.card-cta:hover::after { transform: translateX(2px); }

/* Numbered step list */
ol.steps { list-style: none; padding: 0; margin: 0; counter-reset: step; }
ol.steps li {
  counter-increment: step;
  background: var(--white);
  padding: 28px 28px 28px 88px;
  border-radius: 8px;
  border: 1px solid var(--black-100);
  margin-bottom: 16px;
  position: relative;
}
ol.steps li::before {
  content: counter(step);
  position: absolute;
  left: 28px;
  top: 28px;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--prota-blue);
  color: var(--white);
  display: flex; align-items: center; justify-content: center;
  font-weight: 700;
  font-size: 16px;
}
ol.steps h3 { margin-top: 0; }
ol.steps .meta { display: flex; gap: 16px; font-size: 13px; color: var(--black-600); margin-top: 12px; }
ol.steps .meta strong { color: var(--black-900); font-weight: 600; }

/* Tables */
table.compare {
  width: 100%;
  border-collapse: collapse;
  margin: 32px 0;
  font-size: 15px;
}
table.compare th, table.compare td {
  text-align: left;
  padding: 14px 16px;
  border-bottom: 1px solid var(--black-100);
  vertical-align: top;
}
table.compare th { background: var(--black-50); font-weight: 600; color: var(--black-900); }
table.compare th:first-child { width: 30%; }

/* FAQ */
details {
  border-top: 1px solid var(--black-100);
  padding: 18px 0;
}
details:last-of-type { border-bottom: 1px solid var(--black-100); }
summary {
  font-weight: 600;
  font-size: 17px;
  color: var(--black-900);
  cursor: pointer;
  list-style: none;
  position: relative;
  padding-right: 32px;
}
summary::-webkit-details-marker { display: none; }
summary::after {
  content: "+";
  position: absolute; right: 0; top: 50%;
  transform: translateY(-50%);
  color: var(--prota-blue);
  font-size: 22px;
  font-weight: 300;
}
details[open] summary::after { content: "−"; }
details p { margin: 12px 0 0; color: var(--black-800); }

/* Forms */
form.contact { display: grid; gap: 16px; max-width: 560px; }
form.contact label { font-size: 13px; font-weight: 600; color: var(--black-800); }
form.contact input, form.contact textarea, form.contact select {
  width: 100%;
  padding: 12px 14px;
  border: 1px solid var(--black-100);
  border-radius: 6px;
  font-family: inherit;
  font-size: 15px;
  background: var(--white);
}
form.contact input:focus, form.contact textarea:focus, form.contact select:focus {
  outline: none;
  border-color: var(--prota-blue);
}
form.contact textarea { resize: vertical; min-height: 100px; }
form.contact .consent { font-size: 12px; color: var(--black-600); }
form.contact .row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
@media (max-width: 600px) {
  form.contact .row { grid-template-columns: 1fr; }
}

/* Footer */
footer.site {
  background: var(--black-900);
  color: var(--white);
  padding: 56px 0 32px;
}
footer.site h4 { color: var(--white); font-size: 14px; font-weight: 600; margin: 0 0 14px; letter-spacing: 0.05em; text-transform: uppercase; }
footer.site .footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 40px;
}
footer.site .tagline { color: rgba(255,255,255,0.85); font-size: 16px; max-width: 420px; }
footer.site ul { list-style: none; padding: 0; margin: 0; }
footer.site li { margin-bottom: 8px; }
footer.site a {
  color: rgba(255,255,255,0.85);
  text-decoration: none;
  font-size: 14px;
}
footer.site a:hover { color: var(--white); }
footer.site .copyright {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding-top: 24px;
  font-size: 13px;
  color: rgba(255,255,255,0.6);
}
@media (max-width: 720px) {
  footer.site .footer-grid { grid-template-columns: 1fr; gap: 32px; }
}

/* Utilities */
.center { text-align: center; }
.muted { color: var(--black-600); }
.small { font-size: 14px; }
.spacer-32 { height: 32px; }
.spacer-48 { height: 48px; }

/* ========================================
   .specs — engagement / project metadata
   Used on case-study and project sub-pages.
   Replaces the awkward default table layout
   with a clean two-column metadata grid.
   ======================================== */
table.specs {
  border-collapse: separate;
  border-spacing: 0;
  width: 100%;
  max-width: 760px;
  margin: 24px 0 0;
}
table.specs tbody { display: contents; }
table.specs tr {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 24px;
  align-items: baseline;
  padding: 14px 0;
  border-top: 1px solid var(--black-100);
}
table.specs tr:last-child {
  border-bottom: 1px solid var(--black-100);
}
table.specs th,
table.specs td {
  text-align: left;
  padding: 0;
  font-weight: normal;
  vertical-align: baseline;
}
table.specs th {
  font-size: 12px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--black-600);
  font-weight: 600;
}
table.specs td {
  font-size: 16px;
  color: var(--black-900);
  line-height: 1.5;
}
@media (max-width: 700px) {
  table.specs tr {
    grid-template-columns: 1fr;
    gap: 4px;
  }
}