:root {
  --color-primary: #1c375e;
  --color-primary-light: #2d5a87;
  --color-accent: #3498db;
  --color-link: #2b6cb0;
  --color-link-hover: #3498db;
  --color-bg: #f4f7fb;
  --color-surface: #ffffff;
  --color-text: #1a2a3a;
  --color-muted: #5a6b7d;
  --font-sans: "Segoe UI", system-ui, -apple-system, sans-serif;
  --shadow: 0 0.25rem 1rem rgba(28, 55, 94, 0.08);
  --radius: 0.5rem;
  --max-width: 90rem;
  --sidebar-width: 15rem;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--color-text);
  background: var(--color-bg);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

a {
  color: var(--color-link);
}

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

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

.container {
  width: min(100% - 2rem, var(--max-width));
  margin-inline: auto;
}

/* Header */
.site-header {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
  color: #fff;
  box-shadow: var(--shadow);
}

.site-header__inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1rem 0;
}

.site-header__start {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex: 1;
  min-width: 0;
}

.logo {
  height: 3rem;
  width: auto;
  flex-shrink: 0;
  border-radius: 0.25rem;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 2.75rem;
  height: 2.75rem;
  padding: 0.5rem;
  border: 1px solid rgba(255, 255, 255, 0.35);
  border-radius: 0.35rem;
  background: rgba(255, 255, 255, 0.1);
  cursor: pointer;
  flex-shrink: 0;
}

.nav-toggle:hover {
  background: rgba(255, 255, 255, 0.2);
}

.nav-toggle__bar {
  display: block;
  width: 100%;
  height: 2px;
  background: #fff;
  border-radius: 1px;
  transition: transform 0.2s ease, opacity 0.2s ease;
}

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

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

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

.brand {
  color: inherit;
  text-decoration: none;
}

.brand__title {
  display: block;
  font-size: 1.25rem;
  font-weight: 700;
  line-height: 1.2;
}

.brand__subtitle {
  display: block;
  font-size: 0.85rem;
  opacity: 0.9;
  font-weight: 400;
}

.site-nav ul {
  display: flex;
  flex-wrap: wrap;
  gap: 0.25rem 1rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.site-nav a {
  color: rgba(255, 255, 255, 0.92);
  text-decoration: none;
  font-size: 0.95rem;
  padding: 0.35rem 0.5rem;
  border-radius: 0.25rem;
}

.site-nav a:hover,
.site-nav a[aria-current="page"] {
  background: rgba(255, 255, 255, 0.15);
  color: #fff;
}

/* Main */
main {
  flex: 1;
  padding: 2rem 0 3rem;
}

/* Layout 3 colunas: esquerda | centro | direita */
.layout {
  display: grid;
  grid-template-columns: var(--sidebar-width) minmax(0, 1fr) var(--sidebar-width);
  gap: 1.5rem;
  align-items: start;
}

.layout__main {
  min-width: 0;
}

.sidebar {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.sidebar-widget {
  background: var(--color-surface);
  border-radius: var(--radius);
  padding: 1.1rem 1.15rem;
  box-shadow: var(--shadow);
  border: 1px solid rgba(28, 55, 94, 0.06);
}

.sidebar-widget__title {
  margin: 0 0 0.75rem;
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--color-primary);
  padding-bottom: 0.5rem;
  border-bottom: 2px solid var(--color-accent);
}

.sidebar-widget ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

.sidebar-widget li {
  margin-bottom: 0.35rem;
}

.sidebar-widget li:last-child {
  margin-bottom: 0;
}

.sidebar-widget a {
  color: var(--color-link);
  text-decoration: none;
  font-size: 0.9rem;
}

.sidebar-widget a:hover {
  color: var(--color-link-hover);
  text-decoration: underline;
}

.sidebar-widget ul li > a {
  font-weight: 600;
}

.sidebar-widget p {
  margin: 0 0 0.5rem;
  font-size: 0.875rem;
  color: var(--color-muted);
  line-height: 1.5;
}

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

.sidebar-caderno-list li {
  margin-bottom: 0.5rem;
}

.sidebar-caderno-list__link {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  padding: 0.2rem 0;
  font-weight: 600;
  line-height: 1.3;
  color: var(--color-link);
  text-decoration: none;
}

.sidebar-caderno-list__link:hover {
  color: var(--color-link-hover);
  text-decoration: underline;
}

.sidebar-caderno-list__link:hover .sidebar-caderno-list__thumb {
  box-shadow: 0 2px 8px rgba(28, 55, 94, 0.2);
}

.sidebar-caderno-list__thumb {
  flex-shrink: 0;
  width: 44px;
  max-height: 58px;
  object-fit: cover;
  border-radius: 3px;
  border: 1px solid rgba(28, 55, 94, 0.12);
  box-shadow: 0 1px 3px rgba(28, 55, 94, 0.1);
}

.sidebar-natal {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 0.75rem;
}

.sidebar-natal__tree {
  width: 100%;
  max-width: 200px;
  height: auto;
  border-radius: var(--radius);
  border: 1px solid rgba(28, 55, 94, 0.1);
}

.sidebar-natal__logos {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.sidebar-natal__logo {
  width: 72px;
  max-height: 72px;
  height: auto;
  object-fit: contain;
}

.page-title {
  margin: 0 0 0.5rem;
  font-size: 1.75rem;
  color: var(--color-primary);
}

.page-intro {
  margin: 0 0 2rem;
  color: var(--color-muted);
}

.card-grid {
  display: grid;
  gap: 1rem;
  grid-template-columns: repeat(auto-fill, minmax(16rem, 1fr));
}

.card {
  background: var(--color-surface);
  border-radius: var(--radius);
  padding: 1.25rem;
  box-shadow: var(--shadow);
  border: 1px solid rgba(28, 55, 94, 0.06);
}

.card h2,
.card h3 {
  margin: 0 0 0.5rem;
  font-size: 1rem;
  color: var(--color-primary);
}

.card p {
  margin: 0 0 0.75rem;
  font-size: 0.9rem;
  color: var(--color-muted);
}

.card a.button {
  display: inline-block;
  font-size: 0.875rem;
  font-weight: 600;
  text-decoration: none;
  color: #fff;
  background: var(--color-primary-light);
  padding: 0.4rem 0.85rem;
  border-radius: 0.25rem;
}

.card a.button:hover {
  background: var(--color-accent);
  color: #fff;
}

.hero {
  background: var(--color-surface);
  border-radius: var(--radius);
  padding: 2rem;
  box-shadow: var(--shadow);
  margin-bottom: 2rem;
  border-left: 4px solid var(--color-accent);
}

.hero h1 {
  margin: 0 0 0.75rem;
  font-size: 1.5rem;
  color: var(--color-primary);
}

.hero p {
  margin: 0;
  color: var(--color-muted);
}

.hero img {
  display: block;
  margin-top: 1.5rem;
  border-radius: calc(var(--radius) - 0.125rem);
}

/* Feed de notícias na página inicial */
.news-feed {
  margin-bottom: 2rem;
}

.news-feed__heading {
  margin: 0 0 1.25rem;
  font-size: 1.35rem;
  color: var(--color-primary);
  padding-bottom: 0.5rem;
  border-bottom: 2px solid var(--color-accent);
}

.news-feed .news-card + .news-card {
  margin-top: 1.25rem;
}

.news-card {
  background: var(--color-surface);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  border: 1px solid rgba(28, 55, 94, 0.06);
  overflow: hidden;
}

.news-card--featured {
  border-left: 4px solid var(--color-accent);
}

.news-card__header {
  padding: 1.35rem 1.75rem 1.1rem;
  border-bottom: 1px solid rgba(28, 55, 94, 0.08);
}

.news-card--featured .news-card__header {
  background: linear-gradient(180deg, rgba(52, 152, 219, 0.08) 0%, transparent 100%);
}

.news-card__label {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 0.45rem;
}

.news-card__title {
  margin: 0 0 0.4rem;
  font-size: 1.1rem;
  line-height: 1.4;
  color: var(--color-primary);
  font-weight: 700;
}

.news-card--featured .news-card__title {
  font-size: 1.2rem;
}

.news-card__date {
  display: block;
  font-size: 0.85rem;
  color: var(--color-muted);
}

.news-card__body {
  padding: 1.35rem 1.75rem 1.5rem;
}

.news-card__body p {
  margin: 0 0 1rem;
  color: var(--color-text);
  line-height: 1.75;
  text-align: justify;
  hyphens: auto;
}

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

.news-card__body strong {
  color: var(--color-primary);
  font-weight: 600;
}

.news-card__footnote {
  padding-top: 1rem;
  margin-top: 0.25rem;
  border-top: 1px dashed rgba(28, 55, 94, 0.12);
  font-size: 0.95rem;
  color: var(--color-muted);
}

.news-card__footnote em {
  font-style: normal;
  font-weight: 600;
  color: var(--color-primary);
}

.news-card__footnote cite {
  font-style: italic;
  color: var(--color-link);
}

.news-card__footnote a {
  color: var(--color-link);
  font-weight: 600;
  text-decoration: none;
}

.news-card__footnote a:hover {
  color: var(--color-link-hover);
  text-decoration: underline;
}

.news-card__action {
  padding-top: 1rem;
  margin-top: 0.5rem;
  border-top: 1px solid rgba(28, 55, 94, 0.08);
}

.news-card__action .button {
  display: inline-block;
  font-size: 0.875rem;
  font-weight: 600;
  text-decoration: none;
  color: #fff;
  background: var(--color-primary-light);
  padding: 0.5rem 1rem;
  border-radius: 0.25rem;
}

.news-card__action .button:hover {
  background: var(--color-accent);
  color: #fff;
}

.news-card__category {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--color-muted);
  background: rgba(28, 55, 94, 0.06);
  padding: 0.2rem 0.5rem;
  border-radius: 0.2rem;
  margin-bottom: 0.4rem;
}

.news-card__empty {
  font-style: italic;
  color: var(--color-muted);
  font-size: 0.9rem;
}

.news-card__body a:not(.button) {
  font-weight: 600;
}

.news-gallery {
  display: grid;
  gap: 0.75rem;
  grid-template-columns: repeat(auto-fill, minmax(9rem, 1fr));
  margin: 1rem 0 0;
  padding: 0;
}

.news-gallery img {
  width: 100%;
  height: auto;
  border-radius: calc(var(--radius) - 0.125rem);
  border: 1px solid rgba(28, 55, 94, 0.1);
  box-shadow: var(--shadow);
}

.news-gallery--single {
  grid-template-columns: minmax(0, 22rem);
}

.caderno-section {
  margin-bottom: 2rem;
}

.caderno-section__heading {
  margin: 0 0 1.25rem;
  font-size: 1.35rem;
  color: var(--color-primary);
  padding-bottom: 0.5rem;
  border-bottom: 2px solid var(--color-accent);
}

.caderno-section .caderno-card--featured {
  margin-bottom: 1.25rem;
}

.caderno-grid {
  display: grid;
  gap: 1.25rem;
  grid-template-columns: repeat(auto-fill, minmax(14rem, 1fr));
}

.caderno-card {
  display: flex;
  flex-direction: column;
  background: var(--color-surface);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  border: 1px solid rgba(28, 55, 94, 0.06);
  overflow: hidden;
  transition: box-shadow 0.2s ease, transform 0.2s ease;
}

.caderno-card:hover {
  box-shadow: 0 0.35rem 1.25rem rgba(28, 55, 94, 0.12);
}

.caderno-card__cover:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: -2px;
}

.caderno-card--featured {
  flex-direction: row;
  border-left: 4px solid var(--color-accent);
}

.caderno-card__cover {
  display: block;
  background: #eef3f8;
  line-height: 0;
}

.caderno-card__cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  aspect-ratio: 3 / 4;
}

.caderno-card--featured .caderno-card__cover {
  flex: 0 0 12rem;
  max-width: 12rem;
}

.caderno-card__body {
  display: flex;
  flex-direction: column;
  flex: 1;
  padding: 1.15rem 1.25rem 1.25rem;
}

.caderno-card__label {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 0.35rem;
}

.caderno-card__title {
  margin: 0 0 0.35rem;
  font-size: 1.05rem;
  color: var(--color-primary);
}

.caderno-card__meta {
  margin: 0 0 0.65rem;
  font-size: 0.8rem;
  color: var(--color-muted);
}

.caderno-card__body p:not(.caderno-card__meta) {
  margin: 0 0 1rem;
  flex: 1;
  font-size: 0.9rem;
  color: var(--color-muted);
  line-height: 1.55;
}

.caderno-card__body cite {
  font-style: italic;
  color: var(--color-primary-light);
}

.caderno-card .button {
  align-self: flex-start;
  display: inline-block;
  font-size: 0.875rem;
  font-weight: 600;
  text-decoration: none;
  color: #fff;
  background: var(--color-primary-light);
  padding: 0.4rem 0.85rem;
  border-radius: 0.25rem;
}

.caderno-card .button:hover {
  background: var(--color-accent);
  color: #fff;
}

@media (max-width: 640px) {
  .caderno-card--featured {
    flex-direction: column;
  }

  .caderno-card--featured .caderno-card__cover {
    flex: none;
    max-width: none;
  }
}

.content-block {
  background: var(--color-surface);
  border-radius: var(--radius);
  padding: 1.5rem;
  box-shadow: var(--shadow);
  margin-bottom: 1.5rem;
}

.content-block h2 {
  margin: 0 0 1rem;
  font-size: 1.15rem;
  color: var(--color-primary);
}

.content-block__subtitle {
  margin: 1.25rem 0 0.75rem;
  font-size: 1rem;
  color: var(--color-primary);
}

.download-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.download-list li {
  padding: 0.75rem 0;
  border-bottom: 1px solid rgba(28, 55, 94, 0.08);
}

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

.download-list > li > a {
  color: var(--color-link);
  font-weight: 600;
  text-decoration: none;
}

.download-list > li > a:hover {
  color: var(--color-link-hover);
  text-decoration: underline;
}

.download-list__meta {
  display: block;
  margin-top: 0.25rem;
  font-size: 0.8125rem;
  color: var(--color-muted, #5a6b7d);
  font-weight: 400;
}

.download-list__desc {
  margin: 0.5rem 0 0;
  font-size: 0.9rem;
  line-height: 1.5;
  color: var(--color-text, #333);
  font-weight: 400;
}

.resource-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.resource-list li {
  padding: 0.65rem 0;
  border-bottom: 1px solid rgba(28, 55, 94, 0.08);
}

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

.resource-list a {
  color: var(--color-link);
  font-weight: 600;
  text-decoration: none;
}

.resource-list a:hover {
  color: var(--color-link-hover);
  text-decoration: underline;
}

.contact-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.contact-list li {
  padding: 0.5rem 0;
}

.notice {
  background: #e8f4fc;
  border: 1px solid #b8daf0;
  border-radius: var(--radius);
  padding: 1rem 1.25rem;
  font-size: 0.9rem;
  color: var(--color-primary);
}

.milestone-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.milestone-list > li {
  padding: 1rem 0;
  border-bottom: 1px solid rgba(28, 55, 94, 0.08);
}

.milestone-list > li:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

.milestone-list h3 {
  margin: 0 0 0.5rem;
  font-size: 1rem;
  color: var(--color-primary);
}

.milestone-list a {
  color: var(--color-link);
  font-weight: 600;
}

.milestone-list a:hover {
  color: var(--color-link-hover);
}

.news-card__body p > a {
  color: var(--color-link);
  font-weight: 600;
}

.news-card__body p > a:hover {
  color: var(--color-link-hover);
}

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

/* Footer */
.site-footer {
  background: var(--color-primary);
  color: rgba(255, 255, 255, 0.88);
  padding: 1.5rem 0;
  font-size: 0.875rem;
  margin-top: auto;
}

.site-footer p {
  margin: 0;
  text-align: center;
}

@media (max-width: 960px) {
  .layout {
    grid-template-columns: 1fr;
  }

  .sidebar--left {
    order: 2;
  }

  .layout__main {
    order: 1;
  }

  .sidebar--right {
    order: 3;
  }
}

@media (max-width: 768px) {
  .nav-toggle {
    display: flex;
  }

  .site-nav {
    display: none;
    flex-basis: 100%;
    width: 100%;
    padding-top: 0.25rem;
  }

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

  .site-nav ul {
    flex-direction: column;
    gap: 0.15rem;
    padding: 0.5rem 0;
    border-top: 1px solid rgba(255, 255, 255, 0.2);
  }

  .site-nav a {
    display: block;
    padding: 0.6rem 0.5rem;
  }

  body.nav-open {
    overflow: hidden;
  }
}

@media (max-width: 640px) {
  .news-card__header,
  .news-card__body {
    padding-inline: 1.25rem;
  }

  .news-card__body p {
    text-align: left;
  }
}