/* =============================================
   MÉTRICA — Estilos do blog e da página de post
   Reusa a paleta e tipografia da landing
   ============================================= */

:root {
  --petroleo-50:  #E6EFEF;
  --petroleo-100: #C2DADC;
  --petroleo-200: #8BB4B8;
  --petroleo-300: #5A8E94;
  --petroleo-400: #2D6770;
  --petroleo-500: #003B40;
  --petroleo-600: #003236;
  --petroleo-700: #00282C;
  --petroleo-800: #001E22;
  --petroleo-900: #001417;

  --areia-50:  #FAF7F2;
  --areia-100: #F2EDE5;
  --areia-200: #E2DBD0;
  --areia-300: #C9BFAF;
  --areia-400: #A8997F;
  --areia-500: #87765A;
  --areia-700: #524631;

  --bronze-300: #D08775;
  --bronze-400: #C76F5C;
  --bronze-500: #BF624F;
  --bronze-600: #A5523F;

  --neutral-0:   #FFFFFF;
  --neutral-100: #F5F4F0;
  --neutral-200: #E8E5DD;
  --neutral-300: #D6D2C7;
  --neutral-500: #7C7568;
  --neutral-700: #3F3A2F;
  --neutral-900: #14130F;

  --font-sans: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, sans-serif;

  --container:        1320px;
  --container-narrow: 760px;

  --ease: cubic-bezier(0.4, 0, 0.2, 1);
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.6;
  color: var(--petroleo-900);
  background: var(--areia-100);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}
img, svg { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; border: none; background: none; }
h1, h2, h3, h4 { margin: 0; font-weight: 600; line-height: 1.05; letter-spacing: -0.025em; }
p { margin: 0; }

.container { width: 100%; max-width: var(--container); margin: 0 auto; padding: 0 24px; }
.container-narrow { max-width: var(--container-narrow); margin: 0 auto; padding: 0 24px; }
@media (min-width: 768px) { .container, .container-narrow { padding: 0 40px; } }
@media (min-width: 1024px) { .container { padding: 0 56px; } }

.h1 { font-size: clamp(40px, 6vw, 88px); font-weight: 400; letter-spacing: -0.04em; line-height: 0.98; }
.h2 { font-size: clamp(32px, 4.8vw, 64px); font-weight: 400; letter-spacing: -0.035em; line-height: 1; }
.h3 { font-size: clamp(24px, 3.4vw, 40px); font-weight: 400; letter-spacing: -0.025em; line-height: 1.1; }
.lead {
  font-size: clamp(17px, 1.6vw, 22px);
  line-height: 1.55;
  color: var(--neutral-700);
  font-weight: 400;
}
.text-tag {
  display: inline-block;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--bronze-500);
}
.text-tag::before { content: '[ '; opacity: 0.6; }
.text-tag::after  { content: ' ]'; opacity: 0.6; }

/* ============== HEADER ============== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: var(--areia-100);
  border-bottom: 1px solid var(--areia-200);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}
.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 0;
}
.site-header__logo {
  display: inline-flex;
  align-items: center;
  color: var(--petroleo-500);
  transition: opacity 0.2s ease;
}
.site-header__logo:hover { opacity: 0.78; }
.site-header__logo img {
  height: 60px;
  width: auto;
  display: block;
}
.site-header__logo-fallback {
  font-weight: 600;
  font-size: 16px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--petroleo-500);
}
@media (max-width: 640px) {
  .site-header__logo img { height: 44px; }
}
.site-header__nav { display: flex; gap: 24px; align-items: center; }
.site-header__nav a {
  font-size: 14px;
  color: var(--neutral-700);
  font-weight: 500;
  transition: color 0.2s;
}
.site-header__nav a:hover { color: var(--bronze-500); }
.site-header__nav a.cta {
  background: var(--petroleo-500);
  color: var(--areia-50);
  padding: 9px 18px;
  border-radius: 999px;
  transition: background 0.2s;
}
.site-header__nav a.cta:hover { background: var(--petroleo-700); color: var(--areia-50); }
@media (max-width: 640px) {
  .site-header__nav a:not(.cta) { display: none; }
}

/* ============== FOOTER ============== */
.site-footer {
  background: var(--petroleo-500);
  color: var(--areia-200);
  padding: 60px 0 32px;
  margin-top: 96px;
}
.site-footer a { color: var(--areia-100); transition: color 0.2s; }
.site-footer a:hover { color: var(--bronze-300); }
.site-footer__grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 40px;
  margin-bottom: 48px;
}
@media (max-width: 768px) { .site-footer__grid { grid-template-columns: 1fr; gap: 32px; } }
.site-footer__col h4 {
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: var(--areia-400);
  font-weight: 600;
  margin-bottom: 18px;
}
.site-footer__col ul { list-style: none; padding: 0; margin: 0; display: flex; flex-direction: column; gap: 10px; }
.site-footer__col li { font-size: 14px; }
.site-footer__bottom {
  border-top: 1px solid rgba(255,255,255,0.08);
  padding-top: 24px;
  font-size: 12.5px;
  color: var(--areia-400);
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}

/* ============== BLOG INDEX ============== */
.blog-page__hero {
  padding: 88px 0 56px;
  border-bottom: 1px solid var(--areia-200);
}
.blog-page__hero .h1 { margin-top: 18px; max-width: 800px; }
.blog-page__hero .lead { margin-top: 18px; max-width: 720px; }

.blog-list {
  padding: 64px 0;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 28px;
}

.blog-card {
  display: flex;
  flex-direction: column;
  background: var(--neutral-0);
  border-radius: 18px;
  overflow: hidden;
  border: 1px solid var(--areia-200);
  transition: transform 0.4s var(--ease), box-shadow 0.4s var(--ease), border-color 0.4s var(--ease);
}
.blog-card:hover {
  transform: translateY(-4px);
  border-color: var(--bronze-300);
  box-shadow: 0 24px 48px rgba(0,59,64,0.10);
}

.blog-card__img {
  position: relative;
  aspect-ratio: 16 / 10;
  overflow: hidden;
  background: var(--areia-100);
}
.blog-card__img img {
  width: 100%; height: 100%; object-fit: cover;
  transition: transform 0.6s var(--ease);
}
.blog-card:hover .blog-card__img img { transform: scale(1.04); }
.blog-card__img-placeholder {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--areia-400);
  background: linear-gradient(135deg, var(--areia-100), var(--areia-200));
}

.blog-card__tag {
  position: absolute;
  top: 14px;
  left: 14px;
  background: rgba(0,40,44,0.9);
  color: var(--areia-100);
  font-size: 10.5px;
  letter-spacing: 0.18em;
  font-weight: 600;
  text-transform: uppercase;
  padding: 6px 12px;
  border-radius: 999px;
  backdrop-filter: blur(4px);
}

.blog-card__body { padding: 24px 26px 28px; display: flex; flex-direction: column; flex: 1; }
.blog-card__body h3 {
  font-size: 21px;
  line-height: 1.25;
  font-weight: 600;
  color: var(--petroleo-700);
  letter-spacing: -0.02em;
  margin-bottom: 12px;
}
.blog-card__teaser {
  color: var(--neutral-700);
  font-size: 14.5px;
  line-height: 1.55;
  margin-bottom: 20px;
  flex: 1;
}
.blog-card__meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: auto;
  padding-top: 16px;
  border-top: 1px solid var(--areia-200);
  font-size: 12.5px;
  color: var(--neutral-500);
}
.blog-card__author { display: flex; align-items: center; gap: 8px; }
.blog-card__author-avatar {
  width: 28px; height: 28px;
  border-radius: 50%;
  background: var(--petroleo-500);
  color: var(--areia-100);
  display: flex; align-items: center; justify-content: center;
  font-weight: 600; font-size: 11.5px;
  letter-spacing: 0.04em;
}
.blog-card__author-name { font-weight: 500; color: var(--neutral-700); }

/* ============== POST PAGE ============== */
.post-hero {
  padding: 72px 0 48px;
  background: linear-gradient(180deg, var(--areia-100) 0%, var(--areia-50) 100%);
  border-bottom: 1px solid var(--areia-200);
}
.post-hero__crumb {
  font-size: 13px;
  color: var(--neutral-500);
  margin-bottom: 24px;
}
.post-hero__crumb a { color: var(--bronze-500); }
.post-hero__crumb a:hover { text-decoration: underline; }

.post-hero__tag {
  display: inline-block;
  background: var(--bronze-500);
  color: var(--areia-100);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  font-weight: 600;
  padding: 5px 12px;
  border-radius: 999px;
  margin-bottom: 24px;
  margin-right: 8px; /* espaçamento entre múltiplas tags */
}

.post-hero h1 {
  font-size: clamp(32px, 5vw, 56px);
  font-weight: 500;
  letter-spacing: -0.025em;
  line-height: 1.08;
  color: var(--petroleo-700);
  max-width: 880px;
}
.post-hero__excerpt {
  margin-top: 22px;
  font-size: clamp(17px, 1.5vw, 21px);
  line-height: 1.5;
  color: var(--neutral-700);
  max-width: 760px;
}

.post-hero__meta {
  margin-top: 32px;
  display: flex;
  align-items: center;
  gap: 16px;
  font-size: 13.5px;
  color: var(--neutral-500);
}
.post-hero__meta-dot {
  width: 4px; height: 4px;
  background: var(--areia-300);
  border-radius: 50%;
}
.post-hero__author { display: flex; align-items: center; gap: 10px; }
.post-hero__author-avatar {
  width: 36px; height: 36px;
  border-radius: 50%;
  background: var(--petroleo-500);
  color: var(--areia-100);
  display: flex; align-items: center; justify-content: center;
  font-weight: 600; font-size: 14px;
}
.post-hero__author-name { font-weight: 600; color: var(--neutral-700); }

.post-cover {
  margin: 0 auto;
  max-width: 1080px;
  padding: 40px 24px 0;
}
.post-cover img {
  width: 100%;
  border-radius: 16px;
  box-shadow: 0 24px 48px rgba(0,59,64,0.10);
  display: block;
  max-height: 560px;
  object-fit: cover;
}

/* ============== POST CONTENT ============== */
.post-content {
  padding: 60px 24px 80px;
  max-width: 760px;
  margin: 0 auto;
  font-size: 17.5px;
  line-height: 1.78;
  color: var(--neutral-900);
}
.post-content > * + * { margin-top: 1.2em; }
.post-content p { color: var(--neutral-900); }
.post-content h2 {
  font-size: clamp(24px, 2.6vw, 32px);
  font-weight: 600;
  letter-spacing: -0.02em;
  color: var(--petroleo-700);
  margin-top: 2.2em;
  margin-bottom: 0.6em;
  line-height: 1.2;
}
.post-content h3 {
  font-size: clamp(20px, 2.1vw, 24px);
  font-weight: 600;
  color: var(--petroleo-700);
  margin-top: 1.8em;
  margin-bottom: 0.5em;
  line-height: 1.25;
}
.post-content a {
  color: var(--bronze-500);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-thickness: 1px;
}
.post-content a:hover { color: var(--bronze-600); }
.post-content strong { font-weight: 600; color: var(--petroleo-800); }
.post-content em { font-style: italic; color: var(--neutral-700); }
.post-content ul, .post-content ol { padding-left: 1.6em; }
.post-content li { margin-bottom: 0.5em; }
.post-content blockquote {
  border-left: 3px solid var(--bronze-500);
  padding: 4px 0 4px 22px;
  font-style: italic;
  color: var(--neutral-700);
  font-size: 1.05em;
  margin: 1.6em 0;
}
.post-content img {
  border-radius: 12px;
  margin: 1.8em 0;
  box-shadow: 0 16px 32px rgba(0,59,64,0.08);
}
.post-content pre {
  background: var(--petroleo-700);
  color: var(--areia-100);
  padding: 18px 22px;
  border-radius: 12px;
  overflow-x: auto;
  font-family: 'SF Mono', Menlo, Consolas, monospace;
  font-size: 14.5px;
  line-height: 1.55;
}
.post-content code {
  background: var(--areia-100);
  padding: 2px 8px;
  border-radius: 6px;
  font-family: 'SF Mono', Menlo, Consolas, monospace;
  font-size: 0.88em;
  color: var(--petroleo-700);
}
.post-content pre code { background: transparent; padding: 0; color: inherit; }

/* ============== RELATED POSTS ============== */
.related {
  background: var(--areia-50);
  border-top: 1px solid var(--areia-200);
  padding: 64px 0 80px;
}
.related h2 {
  font-size: clamp(22px, 2.8vw, 32px);
  font-weight: 500;
  letter-spacing: -0.02em;
  color: var(--petroleo-700);
  margin-bottom: 32px;
}
.related .blog-list { padding: 0; }

/* ============== CTA STRIP ============== */
.cta-strip {
  background: var(--petroleo-500);
  color: var(--areia-100);
  padding: 56px 0;
}
.cta-strip__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
  flex-wrap: wrap;
}
.cta-strip h2 {
  font-size: clamp(22px, 2.4vw, 28px);
  font-weight: 500;
  max-width: 640px;
  color: var(--areia-100);
  letter-spacing: -0.015em;
}
.cta-strip a {
  background: var(--bronze-500);
  color: var(--areia-100);
  padding: 14px 28px;
  border-radius: 999px;
  font-weight: 600;
  transition: background 0.2s;
  font-size: 14.5px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.cta-strip a:hover { background: var(--bronze-600); }
.cta-strip a svg { width: 16px; height: 16px; }

/* ============== EMPTY STATE ============== */
.blog-empty {
  text-align: center;
  padding: 100px 24px;
  color: var(--neutral-500);
}
.blog-empty h2 { color: var(--petroleo-700); margin-bottom: 14px; }
.blog-empty p { font-size: 15px; }

/* ============== PAGINATION ============== */
.pagination {
  display: flex;
  justify-content: center;
  gap: 6px;
  margin-top: 56px;
}
.pagination a, .pagination span {
  padding: 10px 16px;
  border-radius: 10px;
  font-size: 13.5px;
  font-weight: 500;
  color: var(--neutral-700);
  background: var(--neutral-0);
  border: 1px solid var(--areia-200);
  transition: all 0.18s;
}
.pagination a:hover {
  border-color: var(--petroleo-500);
  color: var(--petroleo-500);
}
.pagination .current {
  background: var(--petroleo-500);
  color: var(--areia-100);
  border-color: var(--petroleo-500);
}
.pagination .disabled {
  opacity: 0.4;
  pointer-events: none;
}