/* Summit Brasil — summitbr.click */

/* :root */
:root {
  --primary: #0B2545;
  --accent: #3E92CC;
  --bg: #F4F8FC;
  --text: #102A43;
  --muted: #5C6F82;
  --white: #ffffff;
  --border: #D4E0EC;
  --radius-sm: 4px;
  --radius-md: 6px;
  --radius-lg: 8px;
  --space-xs: 8px;
  --space-sm: 16px;
  --space-md: 24px;
  --space-lg: 32px;
  --space-xl: 48px;
  --container: 1140px;
  --font-serif: Georgia, "Times New Roman", serif;
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
  --shadow-sm: 0 1px 3px rgba(11, 37, 69, 0.08);
  --shadow-md: 0 4px 12px rgba(11, 37, 69, 0.1);
  --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: 1.6;
  color: var(--text);
  background-color: 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-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

/* typography */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-serif);
  font-weight: 700;
  line-height: 1.25;
  color: var(--primary);
}

h1 { font-size: 1.875rem; }
h2 { font-size: 1.5rem; }
h3 { font-size: 1.25rem; }
h4 { font-size: 1.125rem; }

p {
  margin-bottom: var(--space-sm);
}

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

.lead {
  font-size: 1.125rem;
  line-height: 1.7;
  color: var(--muted);
}

.text-serif {
  font-family: var(--font-serif);
}

.text-muted {
  color: var(--muted);
}

.text-small {
  font-size: 0.875rem;
}

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

.grid {
  display: grid;
  gap: var(--space-md);
}

.grid-12 {
  grid-template-columns: repeat(12, 1fr);
}

.col-main {
  grid-column: span 12;
}

.col-sidebar {
  grid-column: span 12;
}

main {
  flex: 1;
  padding: var(--space-md) 0 var(--space-xl);
}

.section {
  margin-bottom: var(--space-xl);
}

.section-header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  margin-bottom: var(--space-md);
  padding-bottom: var(--space-xs);
  border-bottom: 2px solid var(--primary);
}

.section-title {
  font-size: 1.25rem;
  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-xs) 0;
}

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

.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);
}

.brand-tagline {
  font-size: 0.75rem;
  color: rgba(255, 255, 255, 0.7);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.header-meta {
  display: none;
  font-size: 0.8125rem;
  color: rgba(255, 255, 255, 0.75);
}

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

.nav-toggle {
  display: flex;
  flex-direction: column;
  gap: 5px;
  padding: var(--space-xs);
  margin-left: auto;
}

.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--white);
  transition: var(--transition);
}

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

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

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

.main-nav {
  display: none;
  flex-direction: column;
  gap: var(--space-xs);
  padding: var(--space-sm) 0;
}

.main-nav.is-open {
  display: flex;
}

.main-nav a {
  color: rgba(255, 255, 255, 0.85);
  font-size: 0.9375rem;
  padding: var(--space-xs) var(--space-sm);
  border-radius: var(--radius-lg);
  transition: var(--transition);
}

.main-nav a:hover,
.main-nav a.is-active {
  background: rgba(62, 146, 204, 0.25);
  color: var(--white);
}

.header-bottom-inner {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-sm);
}

/* components */
.tag {
  display: inline-block;
  font-size: 0.6875rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--accent);
  background: rgba(62, 146, 204, 0.12);
  padding: 3px 8px;
  border-radius: var(--radius-sm);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-xs);
  padding: 10px 20px;
  font-size: 0.9375rem;
  font-weight: 500;
  border-radius: var(--radius-md);
  transition: var(--transition);
  text-align: center;
}

.btn-outlined {
  border: 2px solid var(--accent);
  color: var(--accent);
  background: transparent;
}

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

.card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--transition);
}

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

.card-body {
  padding: var(--space-sm);
}

.card-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-xs);
  margin-bottom: var(--space-xs);
  font-size: 0.8125rem;
  color: var(--muted);
}

.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: 0.9375rem;
  color: var(--muted);
  line-height: 1.55;
}

.card-image {
  aspect-ratio: 3 / 2;
  overflow: hidden;
  background: var(--border);
}

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

/* hero — split-image-text */
.hero-featured {
  display: grid;
  gap: var(--space-md);
  margin-bottom: var(--space-xl);
}

.hero-image {
  aspect-ratio: 3 / 2;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--border);
}

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

.hero-content {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: var(--space-sm);
}

.hero-title {
  font-size: 1.75rem;
}

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

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

/* vertical-cards feed */
.feed-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.feed-card {
  display: grid;
  gap: var(--space-sm);
  grid-template-columns: 1fr;
}

.feed-card .card-image {
  border-radius: var(--radius-md);
}

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

.pick-card .card-body {
  padding: var(--space-md);
}

/* article page */
.article-header {
  margin-bottom: var(--space-lg);
}

.article-title {
  font-size: 2rem;
  margin-bottom: var(--space-sm);
}

.article-meta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  font-size: 0.875rem;
  color: var(--muted);
  padding-bottom: var(--space-sm);
  border-bottom: 1px solid var(--border);
}

.article-hero-image {
  margin: var(--space-md) 0;
  aspect-ratio: 3 / 2;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--border);
}

.pull-quote {
  font-family: var(--font-serif);
  font-size: 1.375rem;
  line-height: 1.45;
  color: var(--primary);
  border-left: 4px solid var(--accent);
  padding: var(--space-sm) 0 var(--space-sm) var(--space-md);
  margin: var(--space-lg) 0;
  font-style: italic;
}

.article-body h2 {
  margin: var(--space-lg) 0 var(--space-sm);
}

.article-body h3 {
  margin: var(--space-md) 0 var(--space-xs);
}

.article-body ul,
.article-body ol {
  margin: var(--space-sm) 0 var(--space-sm) var(--space-md);
}

.article-body ul {
  list-style: disc;
}

.article-body ol {
  list-style: decimal;
}

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

/* sticky toc sidebar */
.toc-sidebar {
  position: sticky;
  top: 120px;
}

.toc-box {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--space-md);
  margin-bottom: var(--space-md);
}

.toc-title {
  font-size: 0.8125rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: var(--space-sm);
  color: var(--muted);
}

.toc-list a {
  display: block;
  font-size: 0.875rem;
  color: var(--text);
  padding: 6px 0;
  border-bottom: 1px solid var(--border);
}

.toc-list a:last-child {
  border-bottom: none;
}

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

/* author bio box */
.author-bio {
  display: flex;
  gap: var(--space-sm);
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--space-md);
}

.author-avatar {
  flex-shrink: 0;
  width: 72px;
  height: 72px;
  border-radius: 50%;
  overflow: hidden;
  border: 2px solid var(--border);
}

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

.author-name {
  font-family: var(--font-serif);
  font-size: 1rem;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 4px;
}

.author-role {
  font-size: 0.8125rem;
  color: var(--accent);
  margin-bottom: var(--space-xs);
}

.author-desc {
  font-size: 0.875rem;
  color: var(--muted);
  line-height: 1.5;
}

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

/* page content */
.page-header {
  margin-bottom: var(--space-lg);
  padding-bottom: var(--space-md);
  border-bottom: 2px solid var(--primary);
}

.page-title {
  font-size: 2rem;
  margin-bottom: var(--space-xs);
}

.content-block {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--space-md);
  margin-bottom: var(--space-md);
}

.content-block h2 {
  font-size: 1.25rem;
  margin-bottom: var(--space-sm);
}

.content-block h3 {
  font-size: 1.0625rem;
  margin: var(--space-md) 0 var(--space-xs);
}

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

.form-group label {
  display: block;
  font-size: 0.875rem;
  font-weight: 500;
  margin-bottom: 6px;
  color: var(--primary);
}

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 10px 12px;
  font-family: inherit;
  font-size: 1rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  background: var(--white);
  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, 0.85);
  padding: var(--space-xl) 0 var(--space-md);
  margin-top: auto;
}

.footer-masthead {
  text-align: center;
  margin-bottom: var(--space-lg);
  padding-bottom: var(--space-lg);
  border-bottom: 1px solid rgba(255, 255, 255, 0.15);
}

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

.footer-motto {
  font-size: 0.9375rem;
  color: rgba(255, 255, 255, 0.7);
  max-width: 520px;
  margin: 0 auto;
  line-height: 1.6;
}

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

.footer-col h3 {
  font-family: var(--font-sans);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: rgba(255, 255, 255, 0.6);
  margin-bottom: var(--space-sm);
}

.footer-col a {
  display: block;
  color: rgba(255, 255, 255, 0.85);
  font-size: 0.9375rem;
  padding: 4px 0;
}

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

.footer-bottom {
  text-align: center;
  font-size: 0.8125rem;
  color: rgba(255, 255, 255, 0.5);
  padding-top: var(--space-md);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

/* cookie bottom-bar */
.cookie-bar {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: var(--primary);
  color: var(--white);
  padding: var(--space-sm);
  z-index: 200;
  box-shadow: 0 -4px 16px rgba(11, 37, 69, 0.2);
  transform: translateY(100%);
  transition: transform 0.3s ease;
}

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

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

.cookie-text {
  font-size: 0.875rem;
  line-height: 1.5;
  color: rgba(255, 255, 255, 0.9);
}

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

.cookie-actions {
  display: flex;
  gap: var(--space-xs);
  flex-wrap: wrap;
}

.cookie-actions .btn-outlined {
  border-color: var(--white);
  color: var(--white);
  font-size: 0.875rem;
  padding: 8px 16px;
}

.cookie-actions .btn-outlined: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);
  white-space: nowrap;
  border: 0;
}

.visually-hidden {
  position: absolute;
  left: -9999px;
}

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

.mb-0 { margin-bottom: 0; }
.mb-sm { margin-bottom: var(--space-sm); }
.mb-md { margin-bottom: var(--space-md); }
.mb-lg { margin-bottom: var(--space-lg); }

.mt-md { margin-top: var(--space-md); }
.mt-lg { margin-top: var(--space-lg); }

/* media queries — 480px */
@media (min-width: 480px) {
  h1 { font-size: 2.25rem; }

  .hero-title {
    font-size: 2rem;
  }

  .feed-card {
    grid-template-columns: 200px 1fr;
    align-items: start;
  }

  .feed-card .card-image {
    aspect-ratio: 3 / 2;
  }

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

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

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

  .cookie-inner {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
  }
}

/* media queries — 768px */
@media (min-width: 768px) {
  h1 { font-size: 2.5rem; }

  .header-meta {
    display: block;
  }

  .nav-toggle {
    display: none;
  }

  .main-nav {
    display: flex;
    flex-direction: row;
    flex-wrap: wrap;
    padding: 0;
    gap: 4px;
  }

  .main-nav.is-open {
    display: flex;
  }

  .hero-featured {
    grid-template-columns: 1fr 1fr;
    align-items: center;
  }

  .article-title {
    font-size: 2.5rem;
  }

  .pull-quote {
    font-size: 1.5rem;
  }

  .col-main {
    grid-column: span 8;
  }

  .col-sidebar {
    grid-column: span 4;
  }

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

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

  .footer-grid {
    grid-template-columns: repeat(4, 1fr);
  }

  .page-title {
    font-size: 2.25rem;
  }
}

/* media queries — 1024px */
@media (min-width: 1024px) {
  .container {
    padding: 0 var(--space-md);
  }

  .hero-title {
    font-size: 2.25rem;
  }

  .feed-card {
    grid-template-columns: 280px 1fr;
  }

  .article-title {
    font-size: 2.75rem;
  }
}