/* Laboratória — labbr.digital — research-publication editorial */

@import url('https://fonts.googleapis.com/css2?family=Lora:ital,wght@0,400;0,600;0,700;1,400&family=Source+Sans+3:wght@400;500;600&display=swap');

:root {
  --lab-indigo: #2e3a8c;
  --lab-indigo-deep: #1a2254;
  --lab-indigo-light: #4a56b5;
  --lab-silver: #c8cdd6;
  --lab-silver-pale: #e8ebf0;
  --lab-silver-mist: #f4f5f8;
  --lab-ink: #1c1f2e;
  --lab-ink-soft: #4a4f63;
  --lab-white: #ffffff;
  --lab-accent: #5b6fd4;
  --lab-border: #b8bfd0;
  --lab-serif: 'Lora', Georgia, 'Times New Roman', serif;
  --lab-sans: 'Source Sans 3', system-ui, sans-serif;
  --lab-max: 1180px;
  --lab-wide: 920px;
  --lab-radius: 2px;
  --lab-shadow: 0 1px 3px rgba(26, 34, 84, 0.08);
  --lab-transition: 0.2s ease;
}

[data-theme="dark"] {
  --lab-indigo: #8b9ae8;
  --lab-indigo-deep: #0e1228;
  --lab-indigo-light: #a8b4f0;
  --lab-silver: #5a6178;
  --lab-silver-pale: #1e2238;
  --lab-silver-mist: #141828;
  --lab-ink: #e8eaf2;
  --lab-ink-soft: #a8adc0;
  --lab-white: #0c0f1a;
  --lab-accent: #9aa8f0;
  --lab-border: #2e3450;
  --lab-shadow: 0 1px 4px rgba(0, 0, 0, 0.35);
}

*, *::before, *::after { box-sizing: border-box; }

html {
  font-size: 17px;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--lab-sans);
  color: var(--lab-ink);
  background: var(--lab-silver-mist);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

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

a {
  color: var(--lab-indigo);
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

a:hover { color: var(--lab-indigo-light); }

h1, h2, h3, h4 {
  font-family: var(--lab-serif);
  font-weight: 700;
  line-height: 1.25;
  margin-top: 0;
}

h1 { font-size: clamp(1.75rem, 4vw, 2.5rem); }
h2 { font-size: clamp(1.35rem, 3vw, 1.75rem); margin-bottom: 0.75rem; }
h3 { font-size: 1.15rem; }

p { margin: 0 0 1rem; }

/* —— Stacked header —— */
.site-header {
  background: var(--lab-white);
  border-bottom: 2px solid var(--lab-indigo);
}

.header-stack {
  max-width: var(--lab-max);
  margin: 0 auto;
  padding: 0 1.25rem;
}

.header-brand-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 0 0.75rem;
  gap: 1rem;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
  color: var(--lab-ink);
}

.logo-text {
  display: flex;
  flex-direction: column;
}

.logo-name {
  font-family: var(--lab-serif);
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--lab-indigo-deep);
}

[data-theme="dark"] .logo-name { color: var(--lab-indigo); }

.logo-tagline {
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--lab-ink-soft);
}

.header-utils {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-shrink: 0;
}

.header-date {
  font-size: 0.78rem;
  color: var(--lab-ink-soft);
  display: none;
}

@media (min-width: 768px) {
  .header-date { display: block; }
}

.theme-toggle,
.menu-toggle {
  font-family: var(--lab-sans);
  font-size: 0.78rem;
  font-weight: 500;
  cursor: pointer;
  border: 1px solid var(--lab-border);
  background: var(--lab-silver-mist);
  color: var(--lab-ink);
  padding: 0.4rem 0.7rem;
  border-radius: var(--lab-radius);
  transition: background var(--lab-transition);
}

.theme-toggle:hover,
.menu-toggle:hover {
  background: var(--lab-silver-pale);
}

.menu-toggle {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 0.5rem;
  width: 36px;
  height: 36px;
  align-items: center;
  justify-content: center;
}

.menu-toggle span {
  display: block;
  width: 18px;
  height: 2px;
  background: var(--lab-ink);
  transition: transform var(--lab-transition);
}

@media (min-width: 900px) {
  .menu-toggle { display: none; }
}

.header-categories {
  display: flex;
  flex-wrap: wrap;
  gap: 0;
  border-top: 1px solid var(--lab-border);
  border-bottom: 1px solid var(--lab-border);
}

.header-categories a {
  flex: 1 1 auto;
  text-align: center;
  padding: 0.65rem 0.5rem;
  font-size: 0.82rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  text-decoration: none;
  color: var(--lab-ink-soft);
  border-right: 1px solid var(--lab-border);
  transition: color var(--lab-transition), background var(--lab-transition);
}

.header-categories a:last-child { border-right: none; }

.header-categories a:hover,
.header-categories a.active {
  color: var(--lab-indigo-deep);
  background: var(--lab-silver-pale);
}

[data-theme="dark"] .header-categories a:hover,
[data-theme="dark"] .header-categories a.active {
  color: var(--lab-indigo);
}

.header-pages {
  display: none;
  padding: 0.5rem 0;
  gap: 1.5rem;
  justify-content: center;
}

.header-pages a {
  font-size: 0.85rem;
  text-decoration: none;
  color: var(--lab-ink-soft);
  font-weight: 500;
}

.header-pages a:hover,
.header-pages a.active { color: var(--lab-indigo); }

.header-pages.is-open {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding-bottom: 1rem;
}

@media (min-width: 900px) {
  .header-pages {
    display: flex;
    flex-direction: row;
  }
  .header-pages.is-open {
    flex-direction: row;
    padding-bottom: 0.5rem;
  }
}

/* —— Main layout —— */
main {
  max-width: var(--lab-max);
  margin: 0 auto;
  padding: 2rem 1.25rem 3rem;
}

.page-intro {
  margin-bottom: 2rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--lab-border);
}

.page-intro h1 {
  color: var(--lab-indigo-deep);
}

[data-theme="dark"] .page-intro h1 { color: var(--lab-indigo); }

.page-intro .lead {
  font-family: var(--lab-serif);
  font-size: 1.1rem;
  color: var(--lab-ink-soft);
  max-width: 52ch;
}

/* —— Hero grid (homepage) —— */
.hero-grid {
  display: grid;
  gap: 1.25rem;
  margin-bottom: 2.5rem;
}

@media (min-width: 768px) {
  .hero-grid {
    grid-template-columns: 1.4fr 1fr;
    grid-template-rows: auto auto;
  }
  .hero-feature {
    grid-row: 1 / 3;
  }
}

.hero-feature {
  border: 2px solid var(--lab-indigo);
  background: var(--lab-white);
  overflow: hidden;
}

.hero-feature img {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
}

.hero-feature-body {
  padding: 1.25rem 1.5rem 1.5rem;
}

.hero-feature .category {
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--lab-indigo);
  margin-bottom: 0.5rem;
}

.hero-feature h2 {
  font-size: clamp(1.4rem, 3vw, 1.9rem);
  margin-bottom: 0.75rem;
}

.hero-feature h2 a {
  color: var(--lab-ink);
  text-decoration: none;
}

.hero-feature h2 a:hover { color: var(--lab-indigo); }

.hero-feature .excerpt {
  font-family: var(--lab-serif);
  color: var(--lab-ink-soft);
  margin-bottom: 1rem;
}

.hero-side-card {
  border: 1px solid var(--lab-border);
  background: var(--lab-white);
  display: flex;
  gap: 1rem;
  padding: 1rem;
  transition: border-color var(--lab-transition);
}

.hero-side-card:hover {
  border-color: var(--lab-indigo);
}

.hero-side-card img {
  width: 100px;
  height: 80px;
  object-fit: cover;
  flex-shrink: 0;
  border: 1px solid var(--lab-border);
}

.hero-side-card h3 {
  margin-bottom: 0.35rem;
  font-size: 1rem;
}

.hero-side-card h3 a {
  color: var(--lab-ink);
  text-decoration: none;
}

.hero-side-card h3 a:hover { color: var(--lab-indigo); }

.hero-side-card .meta {
  font-size: 0.75rem;
  color: var(--lab-ink-soft);
}

/* —— Section blocks —— */
.section-label {
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--lab-indigo);
  margin-bottom: 1rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--lab-silver);
}

.card-grid {
  display: grid;
  gap: 1.25rem;
  margin-bottom: 2.5rem;
}

@media (min-width: 600px) {
  .card-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (min-width: 900px) {
  .card-grid.cols-3 { grid-template-columns: repeat(3, 1fr); }
}

/* —— Bordered editorial cards —— */
.editorial-card {
  border: 1px solid var(--lab-border);
  background: var(--lab-white);
  display: flex;
  flex-direction: column;
  transition: border-color var(--lab-transition), box-shadow var(--lab-transition);
}

.editorial-card:hover {
  border-color: var(--lab-indigo);
  box-shadow: var(--lab-shadow);
}

.editorial-card img {
  width: 100%;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  border-bottom: 1px solid var(--lab-border);
}

.editorial-card-body {
  padding: 1rem 1.15rem 1.25rem;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.editorial-card .category {
  font-size: 0.68rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--lab-indigo);
  margin-bottom: 0.4rem;
}

.editorial-card h3 {
  margin-bottom: 0.5rem;
  flex: 1;
}

.editorial-card h3 a {
  color: var(--lab-ink);
  text-decoration: none;
}

.editorial-card h3 a:hover { color: var(--lab-indigo); }

.editorial-card .excerpt {
  font-size: 0.9rem;
  color: var(--lab-ink-soft);
  margin-bottom: 0.75rem;
  font-family: var(--lab-serif);
}

.editorial-card .meta {
  font-size: 0.75rem;
  color: var(--lab-ink-soft);
  margin-top: auto;
}

/* —— Research brief (homepage sidebar content) —— */
.research-brief {
  background: var(--lab-indigo-deep);
  color: var(--lab-silver-pale);
  padding: 1.5rem;
  margin-bottom: 2.5rem;
  border-left: 4px solid var(--lab-silver);
}

.research-brief h2 {
  color: var(--lab-white);
  font-size: 1.2rem;
  margin-bottom: 0.75rem;
}

.research-brief p {
  font-size: 0.92rem;
  color: var(--lab-silver);
  margin-bottom: 0.75rem;
}

.research-brief a {
  color: var(--lab-silver-pale);
}

/* —— Wide magazine article —— */
.article-magazine {
  max-width: var(--lab-wide);
  margin: 0 auto;
}

.article-magazine .article-header {
  margin-bottom: 2rem;
  padding-bottom: 1.5rem;
  border-bottom: 2px solid var(--lab-indigo);
}

.article-magazine .article-header h1 {
  font-size: clamp(1.85rem, 4.5vw, 2.75rem);
  color: var(--lab-indigo-deep);
  margin-bottom: 1rem;
}

[data-theme="dark"] .article-magazine .article-header h1 {
  color: var(--lab-indigo);
}

.article-magazine .article-deck {
  font-family: var(--lab-serif);
  font-size: 1.2rem;
  font-style: italic;
  color: var(--lab-ink-soft);
  margin-bottom: 1.25rem;
  line-height: 1.5;
}

.article-meta-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem 1.5rem;
  font-size: 0.82rem;
  color: var(--lab-ink-soft);
  align-items: center;
}

.article-meta-bar .author-block {
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.article-meta-bar .author-block img {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  border: 1px solid var(--lab-border);
}

.article-hero-img {
  margin-bottom: 2rem;
  border: 1px solid var(--lab-border);
}

.article-hero-img img { width: 100%; }

.article-hero-img figcaption {
  font-size: 0.78rem;
  color: var(--lab-ink-soft);
  padding: 0.5rem 0.75rem;
  background: var(--lab-silver-pale);
  border-top: 1px solid var(--lab-border);
}

.article-body {
  font-family: var(--lab-serif);
  font-size: 1.05rem;
  line-height: 1.75;
}

.article-body h2 {
  font-size: 1.35rem;
  margin: 2rem 0 0.75rem;
  color: var(--lab-indigo-deep);
}

[data-theme="dark"] .article-body h2 { color: var(--lab-indigo); }

.article-body blockquote {
  margin: 1.5rem 0;
  padding: 1rem 1.25rem;
  border-left: 3px solid var(--lab-indigo);
  background: var(--lab-silver-pale);
  font-style: italic;
  color: var(--lab-ink-soft);
}

.article-updated {
  margin-top: 2rem;
  padding-top: 1rem;
  border-top: 1px solid var(--lab-border);
  font-size: 0.82rem;
  color: var(--lab-ink-soft);
  font-family: var(--lab-sans);
}

/* —— Author bio box —— */
.author-bio {
  display: flex;
  gap: 1.25rem;
  margin: 2.5rem 0;
  padding: 1.25rem;
  border: 1px solid var(--lab-border);
  background: var(--lab-white);
}

.author-bio img {
  width: 72px;
  height: 72px;
  border-radius: 50%;
  border: 2px solid var(--lab-indigo);
  flex-shrink: 0;
}

.author-bio h3 {
  font-size: 1rem;
  margin-bottom: 0.25rem;
}

.author-bio .role {
  font-size: 0.78rem;
  color: var(--lab-indigo);
  font-weight: 600;
  margin-bottom: 0.5rem;
  font-family: var(--lab-sans);
}

.author-bio p {
  font-size: 0.88rem;
  margin: 0;
  font-family: var(--lab-sans);
  color: var(--lab-ink-soft);
}

/* —— Related articles —— */
.related-articles {
  margin-top: 2.5rem;
  padding-top: 1.5rem;
  border-top: 2px solid var(--lab-silver);
}

.related-articles h2 {
  font-size: 1.1rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--lab-indigo);
}

.related-list {
  list-style: none;
  padding: 0;
  margin: 1rem 0 0;
  display: grid;
  gap: 0.75rem;
}

@media (min-width: 600px) {
  .related-list { grid-template-columns: repeat(2, 1fr); }
}

.related-list a {
  display: block;
  padding: 0.75rem 1rem;
  border: 1px solid var(--lab-border);
  text-decoration: none;
  color: var(--lab-ink);
  font-family: var(--lab-serif);
  font-weight: 600;
  transition: border-color var(--lab-transition);
}

.related-list a:hover {
  border-color: var(--lab-indigo);
  color: var(--lab-indigo);
}

/* —— Prose pages —— */
.prose-page {
  max-width: 720px;
  margin: 0 auto;
}

.prose-page h1 {
  color: var(--lab-indigo-deep);
  margin-bottom: 1rem;
}

[data-theme="dark"] .prose-page h1 { color: var(--lab-indigo); }

.prose-page h2 {
  font-size: 1.2rem;
  margin: 1.75rem 0 0.6rem;
  color: var(--lab-indigo-deep);
}

.prose-page ul, .prose-page ol {
  margin: 0 0 1rem;
  padding-left: 1.5rem;
}

.prose-page li { margin-bottom: 0.4rem; }

/* —— Contact form —— */
.contact-form {
  max-width: 520px;
}

.form-group {
  margin-bottom: 1.15rem;
}

.form-group label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 0.35rem;
}

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  font-family: var(--lab-sans);
  font-size: 0.95rem;
  padding: 0.6rem 0.75rem;
  border: 1px solid var(--lab-border);
  border-radius: var(--lab-radius);
  background: var(--lab-white);
  color: var(--lab-ink);
}

.form-group textarea { min-height: 140px; resize: vertical; }

.btn-primary {
  font-family: var(--lab-sans);
  font-size: 0.88rem;
  font-weight: 600;
  padding: 0.65rem 1.5rem;
  background: var(--lab-indigo-deep);
  color: var(--lab-white);
  border: none;
  border-radius: var(--lab-radius);
  cursor: pointer;
  transition: background var(--lab-transition);
}

.btn-primary:hover {
  background: var(--lab-indigo);
}

.form-feedback {
  display: none;
  margin-top: 1rem;
  padding: 0.75rem 1rem;
  background: var(--lab-silver-pale);
  border: 1px solid var(--lab-border);
  font-size: 0.9rem;
}

.contact-info {
  margin-top: 2rem;
  padding: 1.25rem;
  border: 1px solid var(--lab-border);
  background: var(--lab-white);
}

.contact-info h2 {
  font-size: 1rem;
  margin-bottom: 0.5rem;
}

/* —— Footer —— */
.site-footer {
  background: var(--lab-indigo-deep);
  color: var(--lab-silver);
  padding: 2.5rem 1.25rem 1.5rem;
  margin-top: 2rem;
}

.footer-inner {
  max-width: var(--lab-max);
  margin: 0 auto;
  display: grid;
  gap: 2rem;
}

@media (min-width: 700px) {
  .footer-inner {
    grid-template-columns: 1.5fr 1fr 1fr;
  }
}

.footer-brand .logo-name {
  color: var(--lab-white);
  font-size: 1.25rem;
}

.footer-brand p {
  font-size: 0.88rem;
  margin-top: 0.5rem;
  max-width: 32ch;
}

.footer-nav h3 {
  font-family: var(--lab-sans);
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--lab-silver-pale);
  margin-bottom: 0.75rem;
}

.footer-nav ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.footer-nav li { margin-bottom: 0.4rem; }

.footer-nav a {
  color: var(--lab-silver);
  text-decoration: none;
  font-size: 0.88rem;
}

.footer-nav a:hover { color: var(--lab-white); }

.footer-bottom {
  max-width: var(--lab-max);
  margin: 2rem auto 0;
  padding-top: 1.25rem;
  border-top: 1px solid rgba(200, 205, 214, 0.2);
  font-size: 0.78rem;
  text-align: center;
  color: var(--lab-silver);
}

/* —— Cookie notice —— */
.cookie-notice {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: var(--lab-white);
  border-top: 2px solid var(--lab-indigo);
  padding: 1rem 1.25rem;
  z-index: 1000;
  transform: translateY(100%);
  transition: transform 0.3s ease;
  box-shadow: 0 -4px 20px rgba(26, 34, 84, 0.12);
}

.cookie-notice.is-visible {
  transform: translateY(0);
}

.cookie-inner {
  max-width: var(--lab-max);
  margin: 0 auto;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 1rem;
  justify-content: space-between;
}

.cookie-inner p {
  margin: 0;
  font-size: 0.85rem;
  flex: 1;
  min-width: 200px;
}

.cookie-inner a { color: var(--lab-indigo); }

.cookie-accept {
  font-family: var(--lab-sans);
  font-size: 0.82rem;
  font-weight: 600;
  padding: 0.5rem 1.25rem;
  background: var(--lab-indigo-deep);
  color: var(--lab-white);
  border: none;
  border-radius: var(--lab-radius);
  cursor: pointer;
  white-space: nowrap;
}

.cookie-accept:hover { background: var(--lab-indigo); }

/* —— Utility —— */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}

.text-center { text-align: center; }

.no-results {
  display: none;
  padding: 2rem;
  text-align: center;
  border: 1px dashed var(--lab-border);
  color: var(--lab-ink-soft);
}