/* Stable Brasil — research-publication editorial system */

/* --- Tokens --- */
:root {
  --primary: #0B2545;
  --accent: #3E92CC;
  --bg: #F4F8FC;
  --text: #102A43;
  --muted: #5C6F82;
  --white: #ffffff;
  --border: #c8d6e3;
  --border-strong: #8fa4b8;
  --surface: #ffffff;
  --surface-alt: #e8f0f7;
  --quote-bg: #dceaf5;
  --shadow-sm: 0 1px 3px rgba(11, 37, 69, 0.08);
  --shadow-md: 0 4px 16px rgba(11, 37, 69, 0.1);
  --radius-soft: 6px;
  --radius-pill: 999px;
  --container: 1140px;
  --font-serif: Georgia, "Times New Roman", Times, serif;
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-mono: ui-monospace, "Cascadia Code", "Source Code Pro", Menlo, Consolas, monospace;
  --space-xs: 0.5rem;
  --space-sm: 0.75rem;
  --space-md: 1.25rem;
  --space-lg: 2rem;
  --space-xl: 3rem;
  --space-2xl: 4.5rem;
  --line-tight: 1.25;
  --line-body: 1.65;
  --line-loose: 1.8;
  --transition: 0.2s ease;
}

/* --- Reset --- */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

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

body {
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: var(--line-body);
  color: var(--text);
  background: var(--bg);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

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

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

a:hover {
  color: var(--primary);
}

ul,
ol {
  list-style: none;
}

button {
  font: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

/* --- Typography --- */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-serif);
  color: var(--primary);
  line-height: var(--line-tight);
  font-weight: 700;
}

h1 { font-size: clamp(1.875rem, 4vw, 2.75rem); }
h2 { font-size: clamp(1.5rem, 3vw, 2rem); }
h3 { font-size: clamp(1.125rem, 2vw, 1.375rem); }

.lead {
  font-size: 1.125rem;
  line-height: var(--line-loose);
  color: var(--muted);
}

.eyebrow {
  font-family: var(--font-sans);
  font-size: 0.6875rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
}

.byline {
  font-size: 0.875rem;
  color: var(--muted);
}

.byline time {
  font-family: var(--font-mono);
  font-size: 0.8125rem;
}

.prose p {
  margin-bottom: var(--space-md);
}

.prose p:last-child {
  margin-bottom: 0;
}

.prose h2 {
  margin-top: var(--space-xl);
  margin-bottom: var(--space-md);
}

.prose h3 {
  margin-top: var(--space-lg);
  margin-bottom: var(--space-sm);
}

.prose ul,
.prose ol {
  margin-bottom: var(--space-md);
  padding-left: var(--space-lg);
}

.prose ul { list-style: disc; }
.prose ol { list-style: decimal; }

.prose li {
  margin-bottom: var(--space-xs);
}

.prose blockquote {
  border-left: 3px solid var(--accent);
  padding: var(--space-md) var(--space-lg);
  margin: var(--space-lg) 0;
  background: var(--quote-bg);
  font-family: var(--font-serif);
  font-size: 1.125rem;
  font-style: italic;
  color: var(--primary);
}

/* --- Layout --- */
.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 var(--space-md);
}

.grid-12 {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: var(--space-lg);
}

.col-12 { grid-column: span 12; }
.col-8 { grid-column: span 12; }
.col-4 { grid-column: span 12; }
.col-6 { grid-column: span 12; }
.col-3 { grid-column: span 12; }

main {
  flex: 1;
}

.section {
  padding: var(--space-xl) 0;
}

.section--tight {
  padding: var(--space-lg) 0;
}

.section__header {
  margin-bottom: var(--space-lg);
  padding-bottom: var(--space-md);
  border-bottom: 2px solid var(--primary);
}

.section__title {
  font-size: 1.25rem;
  font-family: var(--font-sans);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

/* --- Header: double-row-nav --- */
.site-header {
  background: var(--primary);
  color: var(--white);
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: var(--shadow-md);
}

.header-top {
  border-bottom: 1px solid rgba(255, 255, 255, 0.12);
  padding: var(--space-sm) 0;
}

.header-top__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
}

.brand {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.brand__name {
  font-family: var(--font-serif);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--white);
  letter-spacing: -0.02em;
}

.brand__name:hover {
  color: var(--white);
  opacity: 0.9;
}

.brand__tagline {
  font-size: 0.75rem;
  color: rgba(255, 255, 255, 0.65);
  letter-spacing: 0.04em;
}

.header-meta {
  display: none;
  font-size: 0.8125rem;
  color: rgba(255, 255, 255, 0.7);
  text-align: right;
}

.header-meta time {
  font-family: var(--font-mono);
  display: block;
}

.header-bottom {
  padding: var(--space-sm) 0;
}

.header-bottom__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
}

/* horizontal-pill-active nav */
.nav-pills {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xs);
}

.nav-pills a {
  display: inline-block;
  padding: 0.4rem 1rem;
  font-size: 0.8125rem;
  font-weight: 600;
  color: rgba(255, 255, 255, 0.8);
  border-radius: var(--radius-pill);
  transition: background var(--transition), color var(--transition);
}

.nav-pills a:hover {
  color: var(--white);
  background: rgba(255, 255, 255, 0.1);
}

.nav-pills a.is-active {
  background: var(--accent);
  color: var(--white);
}

.nav-pills a.is-active:hover {
  color: var(--white);
}

.menu-toggle {
  display: flex;
  flex-direction: column;
  gap: 5px;
  padding: var(--space-xs);
  color: var(--white);
}

.menu-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: currentColor;
  transition: transform var(--transition), opacity var(--transition);
}

.menu-toggle[aria-expanded="true"] span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.menu-toggle[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
}

.menu-toggle[aria-expanded="true"] span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

.mobile-nav {
  display: none;
  background: var(--primary);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding: var(--space-md);
}

.mobile-nav.is-open {
  display: block;
}

.mobile-nav a {
  display: block;
  padding: var(--space-sm) 0;
  color: rgba(255, 255, 255, 0.85);
  font-weight: 600;
  font-size: 0.9375rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

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

/* --- Hero: split-image-text --- */
.hero-split {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
}

.hero-split__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
}

.hero-split__content {
  padding: var(--space-xl) var(--space-md);
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: var(--space-md);
}

.hero-split__media {
  aspect-ratio: 3 / 2;
  overflow: hidden;
  background: var(--surface-alt);
}

.hero-split__media img,
.hero-split__media svg {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero-split__title {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
}

.hero-split__excerpt {
  font-size: 1.0625rem;
  line-height: var(--line-loose);
  color: var(--muted);
  max-width: 52ch;
}

/* --- Cards: bordered, vertical-cards --- */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-soft);
  overflow: hidden;
  transition: box-shadow var(--transition), border-color var(--transition);
}

.card:hover {
  box-shadow: var(--shadow-md);
  border-color: var(--border-strong);
}

.card__media {
  aspect-ratio: 3 / 2;
  overflow: hidden;
  background: var(--surface-alt);
}

.card__media img,
.card__media svg {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.card__body {
  padding: var(--space-md);
}

.card__title {
  font-family: var(--font-serif);
  font-size: 1.125rem;
  margin-bottom: var(--space-xs);
}

.card__title a {
  color: var(--primary);
}

.card__title a:hover {
  color: var(--accent);
}

.card__excerpt {
  font-size: 0.875rem;
  color: var(--muted);
  line-height: var(--line-body);
  margin-bottom: var(--space-sm);
}

.card__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-sm);
  font-size: 0.75rem;
  color: var(--muted);
}

.card-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.card-list .card {
  display: grid;
  grid-template-columns: 1fr;
}

.card-list .card__media {
  max-height: 200px;
}

/* --- Tags: uppercase-small --- */
.tag {
  display: inline-block;
  font-size: 0.625rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent);
  background: var(--surface-alt);
  padding: 0.2rem 0.5rem;
  border-radius: var(--radius-soft);
  border: 1px solid var(--border);
}

.tag--primary {
  background: var(--primary);
  color: var(--white);
  border-color: var(--primary);
}

/* --- Buttons: outlined --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-xs);
  padding: 0.625rem 1.25rem;
  font-size: 0.875rem;
  font-weight: 600;
  border-radius: var(--radius-soft);
  border: 2px solid var(--primary);
  color: var(--primary);
  background: transparent;
  transition: background var(--transition), color var(--transition);
}

.btn:hover {
  background: var(--primary);
  color: var(--white);
}

.btn--accent {
  border-color: var(--accent);
  color: var(--accent);
}

.btn--accent:hover {
  background: var(--accent);
  color: var(--white);
}

/* --- Pull quote led article --- */
.article-hero {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  padding: var(--space-xl) 0;
}

.article-hero__quote {
  font-family: var(--font-serif);
  font-size: clamp(1.375rem, 3vw, 1.875rem);
  line-height: var(--line-tight);
  color: var(--primary);
  border-left: 4px solid var(--accent);
  padding-left: var(--space-lg);
  margin: var(--space-lg) 0;
  font-style: italic;
}

.article-layout {
  padding: var(--space-xl) 0;
}

.article-layout__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-xl);
}

/* sticky-toc sidebar */
.article-sidebar {
  order: -1;
}

.toc {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-soft);
  padding: var(--space-md);
}

.toc__title {
  font-family: var(--font-sans);
  font-size: 0.6875rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--muted);
  margin-bottom: var(--space-sm);
}

.toc ol {
  counter-reset: toc;
}

.toc li {
  counter-increment: toc;
  margin-bottom: var(--space-xs);
}

.toc a {
  display: block;
  font-size: 0.8125rem;
  color: var(--text);
  padding: 0.3rem 0;
  border-bottom: 1px solid var(--surface-alt);
}

.toc a:hover,
.toc a.is-active {
  color: var(--accent);
}

.toc a.is-active {
  font-weight: 600;
}

.prose code {
  font-family: var(--font-mono);
  font-size: 0.875em;
  background: var(--surface-alt);
  padding: 0.15em 0.4em;
  border-radius: var(--radius-soft);
}

/* sidebar-bio-box author */
.author-box {
  margin-top: var(--space-lg);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-soft);
  padding: var(--space-md);
}

.author-box__header {
  font-size: 0.6875rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--muted);
  margin-bottom: var(--space-sm);
}

.author-box__inner {
  display: flex;
  gap: var(--space-md);
  align-items: flex-start;
}

.author-box__avatar {
  width: 64px;
  height: 64px;
  border-radius: var(--radius-soft);
  overflow: hidden;
  flex-shrink: 0;
  border: 1px solid var(--border);
}

.author-box__name {
  font-family: var(--font-serif);
  font-size: 1rem;
  color: var(--primary);
  margin-bottom: 0.25rem;
}

.author-box__role {
  font-size: 0.75rem;
  color: var(--accent);
  margin-bottom: var(--space-xs);
}

.author-box__bio {
  font-size: 0.8125rem;
  color: var(--muted);
  line-height: var(--line-body);
}

.article-main__header {
  margin-bottom: var(--space-lg);
}

.article-main__title {
  margin-bottom: var(--space-md);
}

.article-updated {
  font-size: 0.75rem;
  color: var(--muted);
  font-style: italic;
  margin-top: var(--space-xs);
}

.article-figure {
  margin: var(--space-lg) 0;
  border: 1px solid var(--border);
  border-radius: var(--radius-soft);
  overflow: hidden;
}

.article-figure img,
.article-figure svg {
  width: 100%;
  aspect-ratio: 3 / 2;
  object-fit: cover;
}

.article-figure figcaption {
  padding: var(--space-sm) var(--space-md);
  font-size: 0.75rem;
  color: var(--muted);
  background: var(--surface-alt);
}

.related-articles {
  margin-top: var(--space-2xl);
  padding-top: var(--space-lg);
  border-top: 2px solid var(--primary);
}

.related-articles h2 {
  font-family: var(--font-sans);
  font-size: 0.875rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: var(--space-md);
}

/* --- Editorial picks --- */
.picks-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-md);
}

.pick-card {
  display: flex;
  gap: var(--space-md);
  padding: var(--space-md);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-soft);
}

.pick-card__number {
  font-family: var(--font-mono);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--accent);
  line-height: 1;
  flex-shrink: 0;
}

.pick-card__title {
  font-family: var(--font-serif);
  font-size: 1rem;
  margin-bottom: 0.25rem;
}

.pick-card__title a {
  color: var(--primary);
}

/* --- Page headers --- */
.page-header {
  background: var(--primary);
  color: var(--white);
  padding: var(--space-xl) 0;
}

.page-header h1 {
  color: var(--white);
  margin-bottom: var(--space-sm);
}

.page-header .lead {
  color: rgba(255, 255, 255, 0.75);
  max-width: 60ch;
}

.content-page {
  padding: var(--space-xl) 0;
}

.content-page .prose {
  max-width: 72ch;
}

/* --- Contact form --- */
.form-group {
  margin-bottom: var(--space-md);
}

.form-group label {
  display: block;
  font-size: 0.875rem;
  font-weight: 600;
  margin-bottom: var(--space-xs);
  color: var(--primary);
}

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 0.625rem 0.875rem;
  font: inherit;
  border: 1px solid var(--border);
  border-radius: var(--radius-soft);
  background: var(--surface);
  color: var(--text);
  transition: border-color var(--transition);
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--accent);
}

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

/* --- Footer: editorial-masthead --- */
.site-footer {
  background: var(--primary);
  color: rgba(255, 255, 255, 0.8);
  margin-top: auto;
}

.footer-masthead {
  padding: var(--space-xl) 0 var(--space-lg);
  border-bottom: 1px solid rgba(255, 255, 255, 0.12);
}

.footer-masthead__brand {
  font-family: var(--font-serif);
  font-size: 2rem;
  font-weight: 700;
  color: var(--white);
  margin-bottom: var(--space-xs);
  letter-spacing: -0.02em;
}

.footer-masthead__tagline {
  font-size: 0.875rem;
  color: rgba(255, 255, 255, 0.6);
  max-width: 40ch;
  margin-bottom: var(--space-lg);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-lg);
}

.footer-col h3 {
  font-family: var(--font-sans);
  font-size: 0.6875rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--accent);
  margin-bottom: var(--space-sm);
}

.footer-col ul li {
  margin-bottom: var(--space-xs);
}

.footer-col a {
  font-size: 0.875rem;
  color: rgba(255, 255, 255, 0.75);
}

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

.footer-bottom {
  padding: var(--space-md) 0;
  font-size: 0.75rem;
  color: rgba(255, 255, 255, 0.5);
  text-align: center;
}

/* --- Cookie: bottom-bar --- */
.cookie-bar {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: var(--primary);
  color: var(--white);
  padding: var(--space-md);
  z-index: 200;
  box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.15);
  transform: translateY(100%);
  transition: transform 0.3s ease;
}

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

.cookie-bar__inner {
  max-width: var(--container);
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
  align-items: flex-start;
}

.cookie-bar p {
  font-size: 0.875rem;
  line-height: var(--line-body);
  color: rgba(255, 255, 255, 0.85);
}

.cookie-bar p a {
  color: var(--accent);
  text-decoration: underline;
}

.cookie-bar .btn {
  border-color: var(--white);
  color: var(--white);
  flex-shrink: 0;
}

.cookie-bar .btn:hover {
  background: var(--white);
  color: var(--primary);
}

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

.text-muted { color: var(--muted); }
.text-center { text-align: center; }
.mb-md { margin-bottom: var(--space-md); }
.mb-lg { margin-bottom: var(--space-lg); }
.mt-lg { margin-top: var(--space-lg); }

.divider {
  border: none;
  border-top: 1px solid var(--border);
  margin: var(--space-lg) 0;
}

.recent-list li {
  padding: var(--space-sm) 0;
  border-bottom: 1px solid var(--border);
}

.recent-list li:last-child {
  border-bottom: none;
}

.recent-list__link {
  font-size: 0.875rem;
  margin-top: 0.25rem;
}

.recent-list__link a {
  color: var(--primary);
  font-family: var(--font-serif);
}

.recent-list__date {
  font-size: 0.75rem;
}

.pick-card__desc {
  font-size: 0.8125rem;
}

.section--surface {
  background: var(--surface);
  border-top: 1px solid var(--border);
}

/* --- Media queries --- */
@media (min-width: 480px) {
  .card-list .card {
    grid-template-columns: 200px 1fr;
  }

  .card-list .card__media {
    max-height: none;
    aspect-ratio: 3 / 2;
  }

  .picks-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .cookie-bar__inner {
    flex-direction: row;
    align-items: center;
  }
}

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

  .menu-toggle {
    display: none;
  }

  .hero-split__grid {
    grid-template-columns: 1fr 1fr;
  }

  .hero-split__content {
    padding: var(--space-2xl) var(--space-xl);
  }

  .col-8 { grid-column: span 8; }
  .col-4 { grid-column: span 4; }
  .col-6 { grid-column: span 6; }
  .col-3 { grid-column: span 3; }

  .footer-grid {
    grid-template-columns: 2fr 1fr 1fr 1fr;
  }

  .picks-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (min-width: 1024px) {
  .article-layout__grid {
    grid-template-columns: 280px 1fr;
  }

  .article-sidebar {
    order: 0;
    position: sticky;
    top: 120px;
    align-self: start;
  }
}