/* ===========================
   RESET & TOKENS
=========================== */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }

:root {
  --gold: #C9A84C;
  --gold-light: #E2C06A;
  --ink: #0D0F14;
  --ink-2: #161A22;
  --paper: #FFFFFF;
  --paper-2: #F7F8FA;
  --text: #1C222E;
  --text-muted: #5B6272;
  --border: rgba(13, 15, 20, 0.1);
  --radius: 8px;
  --shadow: 0 4px 24px rgba(0, 0, 0, 0.12);
  --font-head: Georgia, 'Times New Roman', serif;
  --font-body: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Arial, sans-serif;
}

:root[data-theme="dark"] {
  --paper: #0D0F14;
  --paper-2: #161A22;
  --text: #D4D8E2;
  --text-muted: #8A90A0;
  --border: rgba(201, 168, 76, 0.15);
  --shadow: 0 4px 24px rgba(0, 0, 0, 0.4);
}

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-body);
  background-color: var(--paper);
  color: var(--text);
  line-height: 1.7;
}

.container { max-width: 1180px; margin: 0 auto; padding: 0 24px; }

h1, h2, h3, h4 { font-family: var(--font-head); color: var(--text); line-height: 1.3; }
a { color: inherit; }

.gold { color: var(--gold); }
.linha-ouro { border: none; border-top: 2px solid var(--gold); width: 60px; margin: 0 auto 32px auto; }

/* ===========================
   HEADER / NAV
=========================== */
.site-header {
  position: sticky;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background-color: var(--ink);
  border-bottom: 1px solid rgba(201, 168, 76, 0.2);
}

.navbar { display: flex; align-items: center; justify-content: space-between; height: 64px; gap: 16px; }

.logo { font-family: var(--font-head); font-size: 1.25rem; font-weight: bold; color: #fff; white-space: nowrap; }
.logo a { text-decoration: none; color: inherit; }

.nav-links { display: flex; list-style: none; gap: 20px; align-items: center; flex-wrap: wrap; }
.nav-links a { text-decoration: none; color: #D4D8E2; font-size: 0.88rem; letter-spacing: 0.3px; transition: color 0.2s; }
.nav-links a:hover, .nav-links a.active { color: var(--gold); }

.btn-nav { background-color: var(--gold); color: var(--ink) !important; padding: 8px 18px; border-radius: var(--radius); font-weight: bold; }
.btn-nav:hover { background-color: var(--gold-light); }

.theme-toggle {
  background: transparent;
  border: 1px solid rgba(201, 168, 76, 0.4);
  color: var(--gold);
  border-radius: var(--radius);
  padding: 6px 10px;
  cursor: pointer;
  font-size: 0.9rem;
}

.nav-toggle { display: none; background: transparent; border: none; color: #fff; font-size: 1.5rem; cursor: pointer; }

/* ===========================
   HERO / BANNERS
=========================== */
.hero {
  background: linear-gradient(135deg, var(--ink) 0%, var(--ink-2) 60%, #1a1500 100%);
  color: #fff;
  padding: 56px 0;
}

.hero .eyebrow { color: var(--gold); font-size: 0.85rem; letter-spacing: 1px; text-transform: uppercase; margin-bottom: 12px; }
.hero h1 { font-size: 2.2rem; margin-bottom: 16px; max-width: 760px; }
.hero p { color: #B8BFCC; max-width: 640px; margin-bottom: 20px; }

.btn-principal {
  display: inline-block;
  background-color: var(--gold);
  color: var(--ink);
  padding: 14px 36px;
  border-radius: var(--radius);
  text-decoration: none;
  font-weight: bold;
  font-family: var(--font-body);
  font-size: 1rem;
  letter-spacing: 0.5px;
  transition: background-color 0.2s, transform 0.2s;
  box-shadow: 0 4px 16px rgba(201, 168, 76, 0.3);
}

.btn-principal:hover {
  background-color: var(--gold-light);
  transform: translateY(-2px);
}

.category-banner {
  padding: 48px 0;
  color: #fff;
  background: linear-gradient(135deg, var(--ink) 0%, var(--ink-2) 100%);
}
.category-banner .icon { font-size: 2.6rem; display: block; margin-bottom: 12px; }
.category-banner h1 { color: #fff; font-size: 1.9rem; }
.category-banner--civil { background: linear-gradient(135deg, #0D0F14 0%, #1c2a1e 100%); }
.category-banner--eletrica { background: linear-gradient(135deg, #0D0F14 0%, #241c0a 100%); }
.category-banner--seguranca { background: linear-gradient(135deg, #0D0F14 0%, #2a1414 100%); }
.category-banner--normas { background: linear-gradient(135deg, #0D0F14 0%, #14202a 100%); }
.category-banner--pericia { background: linear-gradient(135deg, #0D0F14 0%, #201428 100%); }
.category-banner--sustentabilidade { background: linear-gradient(135deg, #0D0F14 0%, #142a1e 100%); }
.category-banner--carreira { background: linear-gradient(135deg, #0D0F14 0%, #241f0a 100%); }
.category-banner--tecnologia { background: linear-gradient(135deg, #0D0F14 0%, #0a1c24 100%); }
.category-banner--curiosidades { background: linear-gradient(135deg, #0D0F14 0%, #2a2410 100%); }

/* ===========================
   LAYOUT: content + sidebar
=========================== */
.page-layout { display: grid; grid-template-columns: 2fr 1fr; gap: 40px; padding: 48px 0; }

/* ===========================
   CARDS
=========================== */
.card, .article-card {
  background-color: var(--paper-2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  transition: border-color 0.2s, transform 0.2s, box-shadow 0.2s;
}
.card:hover, .article-card:hover { border-color: var(--gold); transform: translateY(-3px); box-shadow: var(--shadow); }

.article-card .banner {
  height: 140px;
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2.4rem;
  margin-bottom: 16px;
  background: linear-gradient(135deg, var(--ink) 0%, var(--ink-2) 100%);
}

.article-card h3 { font-size: 1.05rem; margin-bottom: 8px; }
.article-card h3 a { text-decoration: none; }
.article-card h3 a:hover { color: var(--gold); }
.article-card .meta { font-size: 0.78rem; color: var(--text-muted); margin-bottom: 8px; }
.article-card p { font-size: 0.92rem; color: var(--text-muted); }

.card-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.card-grid--2col { grid-template-columns: repeat(2, 1fr); }

.tag {
  display: inline-block;
  font-size: 0.75rem;
  background: rgba(201, 168, 76, 0.12);
  color: var(--gold);
  border: 1px solid rgba(201, 168, 76, 0.3);
  border-radius: 999px;
  padding: 4px 12px;
  margin: 0 6px 6px 0;
  text-decoration: none;
}

/* ===========================
   SIDEBAR
=========================== */
.sidebar .widget { background-color: var(--paper-2); border: 1px solid var(--border); border-radius: var(--radius); padding: 20px; margin-bottom: 24px; }
.sidebar .widget h4 { font-size: 1rem; margin-bottom: 14px; color: var(--gold); }
.sidebar .widget ol, .sidebar .widget ul { list-style: none; }
.sidebar .widget li { margin-bottom: 12px; font-size: 0.88rem; }
.sidebar .widget li a { text-decoration: none; }
.sidebar .widget li a:hover { color: var(--gold); }
.sidebar .ad-slot { background: var(--paper-2); border: 1px dashed var(--border); border-radius: var(--radius); padding: 32px 16px; text-align: center; color: var(--text-muted); font-size: 0.8rem; }

.newsletter-widget input {
  width: 100%; padding: 10px 12px; margin-bottom: 10px;
  border: 1px solid var(--border); border-radius: var(--radius);
  background: var(--paper); color: var(--text); font-family: var(--font-body);
}
.newsletter-widget button {
  width: 100%; padding: 10px; background: var(--gold); color: var(--ink);
  border: none; border-radius: var(--radius); font-weight: bold; cursor: pointer;
}
.newsletter-widget button:hover { background: var(--gold-light); }
.form-feedback { font-size: 0.82rem; margin-top: 8px; display: none; }
.form-feedback.visible { display: block; }
.form-feedback.success { color: #1a7f37; }

/* ===========================
   ARTICLE PAGE
=========================== */
.breadcrumb { font-size: 0.82rem; color: var(--text-muted); margin-bottom: 20px; }
.breadcrumb a { text-decoration: none; }
.breadcrumb a:hover { color: var(--gold); }

.article-header h1 { font-size: 2rem; margin-bottom: 12px; }
.article-meta { font-size: 0.85rem; color: var(--text-muted); margin-bottom: 24px; }
.article-banner {
  height: 220px; border-radius: var(--radius); margin-bottom: 32px;
  display: flex; align-items: center; justify-content: center; font-size: 4rem;
  background: linear-gradient(135deg, var(--ink) 0%, var(--ink-2) 100%);
}
.article-body h2 { font-size: 1.4rem; margin: 32px 0 12px; }
.article-body h3 { font-size: 1.15rem; margin: 24px 0 10px; }
.article-body p { margin-bottom: 16px; font-size: 1.02rem; }
.article-body ul, .article-body ol { margin: 0 0 16px 24px; }
.article-tags { margin: 24px 0; }

.share-buttons { display: flex; gap: 10px; margin: 24px 0; flex-wrap: wrap; }
.share-buttons a {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 8px 14px; border-radius: var(--radius); text-decoration: none;
  font-size: 0.85rem; border: 1px solid var(--border); color: var(--text);
}
.share-buttons a:hover { border-color: var(--gold); color: var(--gold); }

.related-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; margin-top: 16px; }

.comments-placeholder {
  margin-top: 40px; padding: 24px; text-align: center;
  border: 1px dashed var(--border); border-radius: var(--radius); color: var(--text-muted);
}

/* ===========================
   FORMS (contato / newsletter)
=========================== */
.form-page { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; padding: 56px 0; }
.form-page form { display: flex; flex-direction: column; gap: 14px; }
.form-page input, .form-page textarea {
  padding: 12px 14px; border: 1px solid var(--border); border-radius: var(--radius);
  background: var(--paper-2); color: var(--text); font-family: var(--font-body);
}
.form-page button {
  padding: 12px; background: var(--gold); color: var(--ink); border: none;
  border-radius: var(--radius); font-weight: bold; cursor: pointer;
}
.form-page button:hover { background: var(--gold-light); }

/* ===========================
   BUSCA
=========================== */
.busca-form { display: flex; gap: 12px; margin-bottom: 32px; flex-wrap: wrap; }
.busca-form input[type="search"] {
  flex: 1; min-width: 220px; padding: 12px 14px; border: 1px solid var(--border);
  border-radius: var(--radius); background: var(--paper-2); color: var(--text);
}
.busca-form select { padding: 12px; border-radius: var(--radius); border: 1px solid var(--border); background: var(--paper-2); color: var(--text); }
.busca-form button { padding: 12px 24px; background: var(--gold); border: none; border-radius: var(--radius); font-weight: bold; cursor: pointer; }
#busca-resultados { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
#busca-vazio { color: var(--text-muted); display: none; }

/* ===========================
   FOOTER
=========================== */
.site-footer { background-color: var(--ink); color: #B8BFCC; padding: 48px 0 24px; margin-top: 48px; }
.footer-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 32px; margin-bottom: 32px; }
.footer-grid h4 { color: var(--gold); font-size: 0.95rem; margin-bottom: 14px; }
.footer-grid ul { list-style: none; }
.footer-grid li { margin-bottom: 8px; font-size: 0.85rem; }
.footer-grid a { text-decoration: none; color: #B8BFCC; }
.footer-grid a:hover { color: var(--gold); }
.footer-bottom { border-top: 1px solid rgba(201, 168, 76, 0.15); padding-top: 20px; font-size: 0.78rem; color: var(--text-muted); text-align: center; }

/* ===========================
   RESPONSIVE
=========================== */
@media (max-width: 900px) {
  .page-layout { grid-template-columns: 1fr; }
  .form-page { grid-template-columns: 1fr; }
  .card-grid { grid-template-columns: repeat(2, 1fr); }
  .related-grid { grid-template-columns: 1fr; }
  #busca-resultados { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 600px) {
  .nav-toggle { display: block; }
  .nav-links { display: none; width: 100%; flex-direction: column; align-items: flex-start; gap: 4px; padding: 16px 0; }
  .nav-links.open { display: flex; }
  .navbar { flex-wrap: wrap; }
  .hero h1 { font-size: 1.6rem; }
  .card-grid, .card-grid--2col { grid-template-columns: 1fr; }
  #busca-resultados { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
}