/* Impacto Social — forest-sage editorial system */
:root {
  --primary: #184E3A;
  --accent: #74C69D;
  --bg: #F1FBF5;
  --text: #10261D;
  --muted: #6A8F7A;
  --white: #ffffff;
  --border: rgba(24, 78, 58, 0.12);
  --shadow: 0 4px 24px rgba(16, 38, 29, 0.06);
  --radius: 14px;
  --radius-sm: 8px;
  --container: 960px;
  --font-sans: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --space-xs: 8px;
  --space-sm: 16px;
  --space-md: 24px;
  --space-lg: 32px;
  --space-xl: 48px;
  --transition: 0.2s ease;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.65;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}

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

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

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

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

h1 { font-size: clamp(1.75rem, 4vw, 2.35rem); }
h2 { font-size: clamp(1.35rem, 3vw, 1.75rem); margin-bottom: var(--space-sm); }
h3 { font-size: 1.15rem; }

p { margin: 0 0 var(--space-sm); }

ul, ol {
  margin: 0 0 var(--space-sm);
  padding-left: 1.35rem;
}

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

/* Header — double-row-nav */
.site-header {
  background: var(--white);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-top {
  border-bottom: 1px solid var(--border);
  padding: var(--space-xs) 0;
}

.header-top-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-sm);
  font-size: 0.85rem;
  color: var(--muted);
}

.header-date {
  font-variant-numeric: tabular-nums;
}

.header-contact a {
  color: var(--muted);
  text-decoration: none;
}

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

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

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

.logo {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  text-decoration: none;
  color: var(--text);
}

.logo svg {
  width: 36px;
  height: 36px;
  flex-shrink: 0;
}

.logo-text {
  font-size: 1.35rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--primary);
}

.logo-tagline {
  display: block;
  font-size: 0.72rem;
  font-weight: 500;
  color: var(--muted);
  letter-spacing: 0.02em;
}

.menu-toggle {
  display: none;
  background: none;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 8px 12px;
  cursor: pointer;
  color: var(--primary);
  font-size: 0.9rem;
  font-family: inherit;
}

/* horizontal-pill-active nav */
.nav-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-pills a {
  display: block;
  padding: 8px 16px;
  border-radius: 999px;
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--muted);
  transition: background var(--transition), color var(--transition);
}

.nav-pills a:hover {
  background: rgba(116, 198, 157, 0.15);
  color: var(--primary);
}

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

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

/* Buttons — outlined */
.btn {
  display: inline-block;
  padding: 10px 22px;
  border: 2px solid var(--primary);
  border-radius: var(--radius-sm);
  background: transparent;
  color: var(--primary);
  font-family: inherit;
  font-size: 0.9rem;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  transition: background var(--transition), color var(--transition);
}

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

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

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

/* Tags — uppercase-small */
.tag {
  display: inline-block;
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--primary);
  text-decoration: none;
}

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

/* 8-col asymmetric grid */
.grid-8 {
  display: grid;
  grid-template-columns: repeat(8, 1fr);
  gap: var(--space-md);
}

.col-5 { grid-column: span 5; }
.col-3 { grid-column: span 3; }
.col-6 { grid-column: span 6; }
.col-2 { grid-column: span 2; }
.col-8 { grid-column: span 8; }

/* Hero — split-image-text */
.hero-split {
  padding: var(--space-xl) 0 var(--space-lg);
}

.hero-split-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-lg);
  align-items: center;
}

.hero-split-image {
  aspect-ratio: 4 / 3;
  border-radius: var(--radius);
  overflow: hidden;
  background: rgba(116, 198, 157, 0.12);
  box-shadow: var(--shadow);
}

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

.hero-lead-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-sm);
  margin-bottom: var(--space-sm);
  font-size: 0.85rem;
  color: var(--muted);
}

.hero-lead h1 {
  margin-bottom: var(--space-sm);
}

.hero-lead .lead {
  font-size: 1.1rem;
  color: var(--muted);
  margin-bottom: var(--space-md);
}

/* Article list — horizontal-rows */
.article-rows {
  padding-bottom: var(--space-xl);
}

.section-heading {
  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-heading h2 {
  margin: 0;
  font-size: 1.1rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.article-row {
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: var(--space-md);
  padding: var(--space-md) 0;
  border-bottom: 1px solid var(--border);
  align-items: start;
}

.article-row-thumb {
  aspect-ratio: 4 / 3;
  border-radius: var(--radius-sm);
  overflow: hidden;
  background: rgba(116, 198, 157, 0.1);
}

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

.article-row-body h3 {
  margin: 0 0 6px;
}

.article-row-body h3 a {
  text-decoration: none;
  color: var(--text);
}

.article-row-body h3 a:hover {
  color: var(--primary);
}

.article-row-meta {
  font-size: 0.82rem;
  color: var(--muted);
  margin-bottom: 6px;
}

.article-row-excerpt {
  font-size: 0.95rem;
  color: var(--muted);
  margin: 0;
}

/* Cards — stacked-text-below */
.card-stack {
  background: var(--white);
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
  transition: box-shadow var(--transition);
}

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

.card-stack-image {
  aspect-ratio: 4 / 3;
  background: rgba(116, 198, 157, 0.1);
}

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

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

/* Sidebar — left-rail */
.layout-with-sidebar {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: var(--space-xl);
  padding: var(--space-lg) 0 var(--space-xl);
  align-items: start;
}

.sidebar-rail {
  position: sticky;
  top: 120px;
}

.sidebar-widget {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: var(--space-sm);
  margin-bottom: var(--space-md);
}

.sidebar-widget h3 {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--muted);
  margin-bottom: var(--space-sm);
}

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

.sidebar-links li {
  margin-bottom: 8px;
}

.sidebar-links a {
  text-decoration: none;
  font-size: 0.9rem;
}

/* author — sidebar-bio-box */
.author-bio-box {
  text-align: center;
}

.author-bio-box .avatar {
  width: 72px;
  height: 72px;
  margin: 0 auto var(--space-xs);
  border-radius: 50%;
  overflow: hidden;
  background: rgba(116, 198, 157, 0.15);
}

.author-bio-box .avatar svg {
  width: 100%;
  height: 100%;
}

.author-bio-box .author-name {
  font-weight: 700;
  font-size: 0.95rem;
  margin-bottom: 4px;
}

.author-bio-box .author-role {
  font-size: 0.78rem;
  color: var(--muted);
  margin-bottom: var(--space-xs);
}

.author-bio-box p {
  font-size: 0.82rem;
  color: var(--muted);
  margin: 0;
  text-align: left;
}

/* Article — split-content-rail */
.article-header {
  padding: var(--space-lg) 0 var(--space-md);
  border-bottom: 1px solid var(--border);
  margin-bottom: var(--space-md);
}

.article-header .tag {
  margin-bottom: var(--space-xs);
}

.article-byline {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  font-size: 0.88rem;
  color: var(--muted);
  margin-top: var(--space-sm);
}

.article-featured-image {
  aspect-ratio: 4 / 3;
  border-radius: var(--radius);
  overflow: hidden;
  margin-bottom: var(--space-lg);
  background: rgba(116, 198, 157, 0.1);
}

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

.article-content {
  font-size: 1.05rem;
}

.article-content h2 {
  margin-top: var(--space-lg);
}

.article-content blockquote {
  margin: var(--space-md) 0;
  padding: var(--space-sm) var(--space-md);
  border-left: 4px solid var(--accent);
  background: rgba(116, 198, 157, 0.1);
  font-style: italic;
  color: var(--muted);
}

.article-updated {
  font-size: 0.82rem;
  color: var(--muted);
  margin-top: var(--space-lg);
  padding-top: var(--space-sm);
  border-top: 1px solid var(--border);
}

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

.related-articles ul {
  list-style: none;
  padding: 0;
}

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

/* Page content */
.page-hero {
  padding: var(--space-xl) 0 var(--space-md);
}

.page-hero h1 {
  margin-bottom: var(--space-sm);
}

.page-lead {
  font-size: 1.1rem;
  color: var(--muted);
  max-width: 60ch;
}

.page-content {
  padding-bottom: var(--space-xl);
  max-width: 68ch;
}

.page-content.wide {
  max-width: none;
}

/* Contact form */
.contact-form {
  max-width: 520px;
  margin-top: var(--space-md);
}

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

.form-group label {
  display: block;
  font-size: 0.88rem;
  font-weight: 600;
  margin-bottom: 6px;
}

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 10px 14px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-family: inherit;
  font-size: 1rem;
  background: var(--white);
  color: var(--text);
}

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

.form-note {
  font-size: 0.82rem;
  color: var(--muted);
  margin-top: var(--space-sm);
}

/* Footer — three-column */
.site-footer {
  background: var(--primary);
  color: rgba(255, 255, 255, 0.85);
  padding: var(--space-xl) 0 var(--space-md);
  margin-top: var(--space-xl);
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-lg);
  margin-bottom: var(--space-lg);
}

.footer-col h3 {
  color: var(--white);
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: var(--space-sm);
}

.footer-col p,
.footer-col a {
  font-size: 0.9rem;
  color: rgba(255, 255, 255, 0.75);
}

.footer-col a {
  text-decoration: none;
  display: block;
  margin-bottom: 6px;
}

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

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.15);
  padding-top: var(--space-sm);
  font-size: 0.82rem;
  color: rgba(255, 255, 255, 0.6);
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: var(--space-sm);
}

/* Cookie — bottom-bar */
.cookie-bar {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: var(--white);
  border-top: 1px solid var(--border);
  padding: var(--space-sm);
  box-shadow: 0 -4px 24px rgba(16, 38, 29, 0.1);
  z-index: 200;
  transform: translateY(100%);
  transition: transform 0.35s ease;
}

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

.cookie-bar-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-sm);
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 var(--space-sm);
}

.cookie-bar p {
  margin: 0;
  font-size: 0.88rem;
  color: var(--muted);
  flex: 1;
  min-width: 200px;
}

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

.cookie-bar .btn {
  padding: 8px 18px;
  font-size: 0.85rem;
}

/* Articles archive grid */
.articles-archive {
  padding: var(--space-lg) 0 var(--space-xl);
}

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

/* Utility */
.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);
}

.home-editorial {
  padding-bottom: var(--space-xl);
}

.sidebar-note {
  font-size: 0.88rem;
  margin: 0;
}

/* Responsive */
@media (max-width: 900px) {
  .grid-8 {
    grid-template-columns: 1fr;
  }

  .col-5, .col-3, .col-6, .col-2, .col-8 {
    grid-column: span 1;
  }

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

  .layout-with-sidebar {
    grid-template-columns: 1fr;
  }

  .sidebar-rail {
    position: static;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-sm);
  }

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

@media (max-width: 720px) {
  .menu-toggle {
    display: block;
  }

  .nav-pills {
    display: none;
    flex-direction: column;
    width: 100%;
    padding-top: var(--space-sm);
  }

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

  .header-main-inner {
    flex-wrap: wrap;
  }

  .header-nav-wrap {
    width: 100%;
    order: 3;
  }

  .article-row {
    grid-template-columns: 1fr;
  }

  .article-row-thumb {
    max-width: 280px;
  }

  .sidebar-rail {
    grid-template-columns: 1fr;
  }
}