/* =========================================================================
   Desenrola.ai BRASIL — Blog Stylesheet
   Mobile-first, focus em legibilidade, sem framework.
   Cores: verde-floresta #126B3C · dourado #F5C518 · neutros
   ========================================================================= */

:root {
  /* Paleta */
  --color-primary: #126B3C;
  --color-primary-dark: #0E5530;
  --color-primary-light: #1A8F50;
  --color-accent: #F5C518;
  --color-accent-dark: #C99E0F;

  --color-bg: #FFFFFF;
  --color-bg-alt: #F8F9F6;
  --color-bg-card: #FFFFFF;
  --color-text: #1A1F1B;
  --color-text-muted: #5C6660;
  --color-text-soft: #8A938D;
  --color-border: #E4E7E2;
  --color-divider: #EEF0EC;

  --color-success: #126B3C;
  --color-warning: #C99E0F;
  --color-danger: #B23A2E;
  --color-info: #1F6FAB;

  /* Tipografia */
  --font-sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-mono: "JetBrains Mono", "Fira Code", "SF Mono", Consolas, "Liberation Mono", Menlo, monospace;

  /* Espaçamento */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.5rem;
  --space-6: 2rem;
  --space-7: 3rem;
  --space-8: 4rem;
  --space-9: 6rem;

  /* Layout */
  --container-max: 1180px;
  --container-prose: 720px;

  /* Outros */
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-pill: 999px;

  --shadow-sm: 0 1px 2px rgba(18, 107, 60, 0.06);
  --shadow-md: 0 6px 18px rgba(18, 107, 60, 0.08);
  --shadow-lg: 0 18px 36px rgba(18, 107, 60, 0.12);

  --transition: 180ms cubic-bezier(0.4, 0, 0.2, 1);
}

/* =========================================================================
   Reset / Base
   ========================================================================= */
*,
*::before,
*::after { box-sizing: border-box; }

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

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 18px;
  line-height: 1.7;
  color: var(--color-text);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

a {
  color: var(--color-primary);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-thickness: 1px;
  transition: color var(--transition);
}
a:hover { color: var(--color-primary-dark); }
a:focus-visible {
  outline: 3px solid var(--color-accent);
  outline-offset: 2px;
  border-radius: 4px;
}

button {
  font-family: inherit;
  font-size: inherit;
  cursor: pointer;
  border: none;
  background: none;
  color: inherit;
}

p { margin: 0 0 var(--space-5); }

/* =========================================================================
   Typography Scale
   ========================================================================= */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-sans);
  font-weight: 700;
  line-height: 1.2;
  color: var(--color-text);
  letter-spacing: -0.02em;
  margin: var(--space-7) 0 var(--space-4);
}
h1 { font-size: clamp(2rem, 5vw, 3rem); margin-top: 0; }
h2 { font-size: clamp(1.625rem, 3.5vw, 2rem); }
h3 { font-size: clamp(1.25rem, 2.5vw, 1.5rem); }
h4 { font-size: 1.125rem; }

.lead {
  font-size: 1.25rem;
  color: var(--color-text-muted);
  line-height: 1.6;
}

/* =========================================================================
   Layout
   ========================================================================= */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--space-5);
}
.container-prose {
  max-width: var(--container-prose);
  margin: 0 auto;
  padding: 0 var(--space-5);
}

.skip-link {
  position: absolute;
  top: -100px;
  left: var(--space-4);
  background: var(--color-primary);
  color: #fff;
  padding: var(--space-3) var(--space-5);
  border-radius: var(--radius-md);
  z-index: 1000;
  transition: top var(--transition);
}
.skip-link:focus { top: var(--space-4); }

/* =========================================================================
   Reading Progress Bar
   ========================================================================= */
.reading-progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 3px;
  width: 0;
  background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
  z-index: 100;
  transition: width 80ms linear;
}

/* =========================================================================
   Header / Nav
   ========================================================================= */
.site-header {
  background: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: saturate(180%) blur(10px);
  -webkit-backdrop-filter: saturate(180%) blur(10px);
}
.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}
.logo {
  font-weight: 800;
  font-size: 1.125rem;
  color: var(--color-primary);
  text-decoration: none;
  letter-spacing: -0.02em;
}
.logo strong { color: var(--color-accent-dark); }
.logo:hover { color: var(--color-primary-dark); }

.nav-main { display: flex; gap: var(--space-5); align-items: center; }
.nav-main a {
  color: var(--color-text);
  text-decoration: none;
  font-weight: 500;
  font-size: 0.95rem;
  padding: var(--space-2) 0;
  position: relative;
}
.nav-main a:hover { color: var(--color-primary); }
.nav-main a.active::after {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: -4px;
  height: 2px;
  background: var(--color-accent);
  border-radius: 2px;
}
.nav-cta {
  background: var(--color-primary);
  color: #fff !important;
  padding: var(--space-2) var(--space-4) !important;
  border-radius: var(--radius-pill);
  font-weight: 600;
}
.nav-cta:hover { background: var(--color-primary-dark); }

@media (max-width: 720px) {
  .nav-main { gap: var(--space-3); }
  .nav-main a:not(.nav-cta) { display: none; }
}

/* =========================================================================
   Hero do Hub
   ========================================================================= */
.hero {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
  color: #fff;
  padding: var(--space-9) 0 var(--space-8);
  position: relative;
  overflow: hidden;
}
.hero::after {
  content: "";
  position: absolute;
  right: -100px; top: -100px;
  width: 400px; height: 400px;
  background: var(--color-accent);
  opacity: 0.08;
  border-radius: 50%;
  filter: blur(40px);
}
.hero h1 { color: #fff; }
.hero .lead { color: rgba(255, 255, 255, 0.85); max-width: 640px; }
.hero-badge {
  display: inline-block;
  background: rgba(245, 197, 24, 0.15);
  color: var(--color-accent);
  padding: var(--space-1) var(--space-4);
  border-radius: var(--radius-pill);
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: var(--space-4);
  border: 1px solid rgba(245, 197, 24, 0.3);
}

/* =========================================================================
   Pillars (3 categorias)
   ========================================================================= */
.pillars { padding: var(--space-8) 0; background: var(--color-bg-alt); }
.pillars-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-5);
  margin-top: var(--space-6);
}
.pillar-card {
  background: var(--color-bg-card);
  padding: var(--space-6);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  text-decoration: none;
  color: inherit;
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
  display: block;
}
.pillar-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--color-primary);
  color: inherit;
}
.pillar-card .pillar-icon {
  width: 48px; height: 48px;
  background: var(--color-primary);
  color: #fff;
  border-radius: var(--radius-md);
  display: grid;
  place-items: center;
  font-size: 1.5rem;
  margin-bottom: var(--space-4);
}
.pillar-card h3 { margin: 0 0 var(--space-2); color: var(--color-primary); }
.pillar-card p { margin: 0; color: var(--color-text-muted); }

/* =========================================================================
   Lista de Posts
   ========================================================================= */
.posts-section { padding: var(--space-8) 0; }
.posts-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: var(--space-6);
  margin-top: var(--space-6);
}
.post-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: transform var(--transition), box-shadow var(--transition);
  display: flex;
  flex-direction: column;
}
.post-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}
.post-card-image {
  aspect-ratio: 16 / 9;
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-light));
  overflow: hidden;
}
.post-card-image img { width: 100%; height: 100%; object-fit: cover; }
.post-card-body { padding: var(--space-5); flex: 1; display: flex; flex-direction: column; }
.post-card-tag {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--color-primary);
  background: rgba(18, 107, 60, 0.08);
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-pill);
  margin-bottom: var(--space-3);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.post-card h3 {
  margin: 0 0 var(--space-3);
  font-size: 1.25rem;
  line-height: 1.3;
}
.post-card h3 a {
  color: var(--color-text);
  text-decoration: none;
}
.post-card h3 a:hover { color: var(--color-primary); }
.post-card .excerpt {
  color: var(--color-text-muted);
  font-size: 0.95rem;
  flex: 1;
  margin-bottom: var(--space-4);
}
.post-card-meta {
  display: flex;
  justify-content: space-between;
  font-size: 0.85rem;
  color: var(--color-text-soft);
  border-top: 1px solid var(--color-divider);
  padding-top: var(--space-3);
}

/* =========================================================================
   Article (template-post)
   ========================================================================= */
.article-header {
  padding: var(--space-7) 0 var(--space-5);
  border-bottom: 1px solid var(--color-divider);
}
.breadcrumb {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  margin-bottom: var(--space-4);
}
.breadcrumb a { color: var(--color-text-muted); }
.breadcrumb a:hover { color: var(--color-primary); }
.breadcrumb span { margin: 0 var(--space-2); color: var(--color-text-soft); }

.article-meta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
  font-size: 0.9rem;
  color: var(--color-text-muted);
  margin-top: var(--space-4);
}
.article-meta .author { display: flex; align-items: center; gap: var(--space-2); font-weight: 600; color: var(--color-text); }
.article-meta time { color: var(--color-text-muted); }
.article-meta .reading-time::before { content: "·"; margin-right: var(--space-2); color: var(--color-text-soft); }

.article-tag {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--color-primary);
  background: rgba(18, 107, 60, 0.08);
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-pill);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: var(--space-4);
}

.article-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--space-7);
  padding: var(--space-7) 0;
}
@media (min-width: 1024px) {
  .article-layout {
    grid-template-columns: 220px minmax(0, var(--container-prose)) 220px;
    justify-content: center;
    gap: var(--space-6);
  }
}

.article-body {
  font-size: 1.125rem;
  line-height: 1.75;
  color: var(--color-text);
}
.article-body > * { max-width: 100%; }
.article-body h2 {
  margin-top: var(--space-8);
  padding-top: var(--space-4);
  border-top: 2px solid var(--color-divider);
}
.article-body h2:first-of-type { border-top: none; padding-top: 0; }
.article-body ul, .article-body ol { margin: 0 0 var(--space-5) var(--space-5); padding: 0; }
.article-body li { margin-bottom: var(--space-2); }

.article-body blockquote {
  margin: var(--space-6) 0;
  padding: var(--space-5);
  background: var(--color-bg-alt);
  border-left: 4px solid var(--color-accent);
  border-radius: var(--radius-sm);
  font-style: italic;
  color: var(--color-text);
}
.article-body blockquote p:last-child { margin-bottom: 0; }

.article-body code {
  font-family: var(--font-mono);
  font-size: 0.9em;
  background: var(--color-bg-alt);
  padding: 2px 6px;
  border-radius: 4px;
  color: var(--color-primary-dark);
}
.article-body pre {
  background: #1A1F1B;
  color: #F0F2EE;
  padding: var(--space-5);
  border-radius: var(--radius-md);
  overflow-x: auto;
  margin: var(--space-5) 0;
}
.article-body pre code { background: none; color: inherit; padding: 0; }

/* Alert boxes */
.alert {
  display: flex;
  gap: var(--space-4);
  padding: var(--space-4) var(--space-5);
  border-radius: var(--radius-md);
  margin: var(--space-6) 0;
  border-left: 4px solid;
}
.alert-icon { font-size: 1.25rem; flex-shrink: 0; }
.alert-content { flex: 1; }
.alert-content p:last-child { margin-bottom: 0; }
.alert-content strong { display: block; margin-bottom: var(--space-1); }

.alert-info {
  background: #E8F1F8;
  border-left-color: var(--color-info);
  color: #0F4870;
}
.alert-warning {
  background: #FCF6E2;
  border-left-color: var(--color-warning);
  color: #6B4F00;
}
.alert-legal {
  background: #F0F4F1;
  border-left-color: var(--color-primary);
  color: var(--color-text);
  font-size: 0.95rem;
}
.alert-legal strong { color: var(--color-primary); }

/* =========================================================================
   Table of Contents
   ========================================================================= */
.toc {
  position: sticky;
  top: 96px;
  align-self: start;
  font-size: 0.9rem;
}
.toc-title {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-text-muted);
  margin-bottom: var(--space-3);
}
.toc ul { list-style: none; padding: 0; margin: 0; }
.toc li { margin: 0; }
.toc a {
  display: block;
  padding: var(--space-2) var(--space-3);
  color: var(--color-text-muted);
  text-decoration: none;
  border-left: 2px solid var(--color-divider);
  transition: color var(--transition), border-color var(--transition);
  line-height: 1.4;
}
.toc a:hover { color: var(--color-primary); border-left-color: var(--color-primary-light); }
.toc a.active { color: var(--color-primary); border-left-color: var(--color-accent); font-weight: 600; }
.toc .toc-h3 { padding-left: var(--space-5); font-size: 0.85rem; }
@media (max-width: 1023px) {
  .toc { display: none; }
}

/* =========================================================================
   Share sidebar
   ========================================================================= */
.share-sidebar {
  position: sticky;
  top: 96px;
  align-self: start;
}
.share-sidebar-title {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-text-muted);
  margin-bottom: var(--space-3);
}
.share-buttons {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}
.share-btn {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  color: var(--color-text);
  background: var(--color-bg-card);
  font-size: 0.9rem;
  font-weight: 500;
  transition: all var(--transition);
  text-decoration: none;
  width: 100%;
  text-align: left;
}
.share-btn:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
  transform: translateX(2px);
}
.share-btn .icon { font-size: 1.1rem; }
@media (max-width: 1023px) {
  .share-sidebar { position: static; margin: var(--space-6) 0; }
  .share-buttons { flex-direction: row; flex-wrap: wrap; }
  .share-btn { flex: 1 1 calc(50% - var(--space-2)); }
}

/* =========================================================================
   CTA Cards
   ========================================================================= */
.cta-card {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
  color: #fff;
  padding: var(--space-7);
  border-radius: var(--radius-lg);
  margin: var(--space-7) 0;
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}
.cta-card::before {
  content: "";
  position: absolute;
  right: -50px; top: -50px;
  width: 200px; height: 200px;
  background: var(--color-accent);
  opacity: 0.1;
  border-radius: 50%;
}
.cta-card h3 { color: #fff; margin: 0 0 var(--space-3); }
.cta-card p { color: rgba(255, 255, 255, 0.9); margin-bottom: var(--space-5); }
.cta-card .price {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--color-accent);
  display: block;
  margin-bottom: var(--space-4);
}
.cta-card .price small { font-size: 0.85rem; color: rgba(255, 255, 255, 0.8); font-weight: 400; margin-left: var(--space-2); }

.btn {
  display: inline-block;
  padding: var(--space-3) var(--space-6);
  background: var(--color-accent);
  color: var(--color-text);
  font-weight: 700;
  text-decoration: none;
  border-radius: var(--radius-pill);
  transition: all var(--transition);
  border: none;
  font-size: 1rem;
  cursor: pointer;
}
.btn:hover {
  background: var(--color-accent-dark);
  color: var(--color-text);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}
.btn-outline {
  background: transparent;
  border: 2px solid #fff;
  color: #fff;
}
.btn-outline:hover {
  background: #fff;
  color: var(--color-primary);
}
.btn-block { display: block; text-align: center; width: 100%; }

/* CTA Grid (3 produtos no hub) */
.cta-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-5);
  margin-top: var(--space-6);
}
.cta-product {
  background: var(--color-bg-card);
  border: 2px solid var(--color-border);
  padding: var(--space-6);
  border-radius: var(--radius-md);
  transition: all var(--transition);
  text-align: left;
}
.cta-product:hover {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-md);
}
.cta-product .badge {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--color-accent-dark);
  background: rgba(245, 197, 24, 0.15);
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-pill);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: var(--space-3);
}
.cta-product h3 { margin: 0 0 var(--space-2); color: var(--color-primary); }
.cta-product .price {
  font-size: 2rem;
  font-weight: 800;
  color: var(--color-primary);
  display: block;
  margin: var(--space-3) 0;
}
.cta-product .price small {
  font-size: 0.875rem;
  font-weight: 400;
  color: var(--color-text-muted);
}
.cta-product ul { padding-left: var(--space-5); margin: 0 0 var(--space-5); color: var(--color-text-muted); font-size: 0.95rem; }
.cta-product ul li { margin-bottom: var(--space-2); }
.cta-product .btn { display: block; text-align: center; }

/* =========================================================================
   FAQ
   ========================================================================= */
.faq-list { margin: var(--space-6) 0; }
.faq-item {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  margin-bottom: var(--space-3);
  overflow: hidden;
}
.faq-question {
  padding: var(--space-4) var(--space-5);
  font-weight: 600;
  font-size: 1.05rem;
  color: var(--color-text);
  cursor: pointer;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-4);
}
.faq-question::-webkit-details-marker { display: none; }
.faq-question::after {
  content: "+";
  font-size: 1.5rem;
  color: var(--color-primary);
  font-weight: 300;
  transition: transform var(--transition);
}
.faq-item[open] .faq-question::after { content: "−"; }
.faq-answer { padding: 0 var(--space-5) var(--space-5); color: var(--color-text-muted); }
.faq-answer p:last-child { margin-bottom: 0; }

/* =========================================================================
   Related Posts
   ========================================================================= */
.related-section {
  background: var(--color-bg-alt);
  padding: var(--space-8) 0;
  margin-top: var(--space-8);
}
.related-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-5);
  margin-top: var(--space-5);
}

/* =========================================================================
   Newsletter
   ========================================================================= */
.newsletter {
  background: var(--color-bg-alt);
  padding: var(--space-7);
  border-radius: var(--radius-lg);
  margin: var(--space-7) 0;
  text-align: center;
}
.newsletter h3 { margin: 0 0 var(--space-3); color: var(--color-primary); }
.newsletter p { color: var(--color-text-muted); margin-bottom: var(--space-5); }
.newsletter-form {
  display: flex;
  gap: var(--space-2);
  max-width: 480px;
  margin: 0 auto;
  flex-wrap: wrap;
}
.newsletter-form input {
  flex: 1 1 220px;
  padding: var(--space-3) var(--space-4);
  font-size: 1rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-pill);
  font-family: inherit;
  background: var(--color-bg);
  color: var(--color-text);
}
.newsletter-form input:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(18, 107, 60, 0.15);
}
.newsletter-form button { flex: 0 0 auto; }
.newsletter-message {
  margin-top: var(--space-4);
  font-size: 0.9rem;
  color: var(--color-success);
  font-weight: 600;
}

/* =========================================================================
   Footer
   ========================================================================= */
.site-footer {
  background: #0E1A14;
  color: rgba(255, 255, 255, 0.75);
  padding: var(--space-8) 0 var(--space-5);
  font-size: 0.9rem;
  margin-top: var(--space-9);
}
.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--space-6);
  margin-bottom: var(--space-6);
}
.footer-col h4 {
  color: #fff;
  font-size: 0.95rem;
  margin: 0 0 var(--space-4);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.footer-col ul { list-style: none; padding: 0; margin: 0; }
.footer-col li { margin-bottom: var(--space-2); }
.footer-col a {
  color: rgba(255, 255, 255, 0.7);
  text-decoration: none;
}
.footer-col a:hover { color: var(--color-accent); }
.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: var(--space-5);
  font-size: 0.825rem;
  color: rgba(255, 255, 255, 0.55);
  text-align: center;
  line-height: 1.6;
}
.footer-bottom .disclaimer {
  background: rgba(245, 197, 24, 0.08);
  border: 1px solid rgba(245, 197, 24, 0.2);
  border-radius: var(--radius-md);
  padding: var(--space-3);
  margin-bottom: var(--space-4);
  color: rgba(255, 255, 255, 0.7);
}

/* =========================================================================
   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;
}
.text-center { text-align: center; }
.mt-0 { margin-top: 0; }
.mb-0 { margin-bottom: 0; }

/* =========================================================================
   Dark Mode (opt-in via prefers-color-scheme)
   ========================================================================= */
@media (prefers-color-scheme: dark) {
  :root {
    --color-bg: #0F1410;
    --color-bg-alt: #161D18;
    --color-bg-card: #1A221C;
    --color-text: #F0F2EE;
    --color-text-muted: #A8B0AA;
    --color-text-soft: #6F7872;
    --color-border: #28332B;
    --color-divider: #1F2922;
  }
  .site-header {
    background: rgba(15, 20, 16, 0.85);
    border-bottom-color: var(--color-border);
  }
  .article-body code { background: #28332B; color: var(--color-accent); }
  .alert-info { background: #142535; color: #B8D4E8; }
  .alert-warning { background: #2E2614; color: #E8D49B; }
  .alert-legal { background: #182218; color: var(--color-text); }
}

/* =========================================================================
   Print
   ========================================================================= */
@media print {
  .site-header, .reading-progress, .toc, .share-sidebar, .newsletter,
  .related-section, .cta-card, .site-footer { display: none; }
  body { font-size: 12pt; color: #000; background: #fff; }
  a { color: #000; text-decoration: underline; }
}

/* =========================================================================
   Reduced motion
   ========================================================================= */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}