/* ===== VARIABLES ===== */
:root {
  --color-primary: #E8651A;
  --color-primary-dark: #C9550F;
  --color-primary-glow: rgba(232, 101, 26, 0.12);
  --color-secondary: #1A3A5C;
  --color-secondary-light: #2D5A8C;
  --color-accent: #F97316;
  --color-bg: #F8FAFC;
  --color-card: #FFFFFF;
  --color-text: #1E293B;
  --color-text-light: #64748B;
  --color-border: #E2E8F0;
  --color-success: #4ade80;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-heading: 'Outfit', 'Inter', sans-serif;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.04), 0 1px 2px rgba(0,0,0,0.06);
  --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.07), 0 2px 4px -2px rgba(0,0,0,0.05);
  --shadow-lg: 0 10px 25px -3px rgba(0,0,0,0.1), 0 4px 10px -4px rgba(0,0,0,0.06);
  --shadow-xl: 0 20px 40px -5px rgba(0,0,0,0.12), 0 8px 16px -8px rgba(0,0,0,0.08);
  --radius: 12px;
  --radius-sm: 8px;
  --radius-xs: 4px;
  --container-max: 1200px;
  --header-h: 64px;
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
  --ease-smooth: cubic-bezier(0.4, 0, 0.2, 1);
  --duration-fast: 0.15s;
  --duration-normal: 0.25s;
  --duration-slow: 0.4s;
}

/* ===== RESET ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; scroll-padding-top: calc(var(--header-h) + 16px); }
body { font-family: var(--font-body); font-size: 15px; line-height: 1.6; color: var(--color-text); background: var(--color-bg); -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale; }
a { color: inherit; text-decoration: none; transition: color var(--duration-fast) var(--ease-smooth); }
img { display: block; max-width: 100%; height: auto; }
ul { list-style: none; }
button { cursor: pointer; border: none; background: none; font-family: inherit; font-size: inherit; color: inherit; }
input, textarea { font-family: inherit; font-size: inherit; }

/* ===== FOCUS STATES ===== */
:focus-visible { outline: 2px solid var(--color-primary); outline-offset: 2px; border-radius: var(--radius-xs); }
:focus:not(:focus-visible) { outline: none; }

/* ===== UTILITIES ===== */
.container { width: 100%; max-width: var(--container-max); margin: 0 auto; padding: 0 24px; }

.btn { display: inline-flex; align-items: center; gap: 6px; font-family: var(--font-body); font-weight: 600; font-size: 14px; padding: 12px 24px; border-radius: var(--radius-sm); transition: all var(--duration-normal) var(--ease-out); white-space: nowrap; position: relative; overflow: hidden; }
.btn::after { content: ''; position: absolute; inset: 0; background: linear-gradient(180deg, rgba(255,255,255,0.12) 0%, transparent 50%); opacity: 0; transition: opacity var(--duration-fast); pointer-events: none; }
.btn:hover::after { opacity: 1; }
.btn:active { transform: translateY(0) scale(0.98); }
.btn-sm { padding: 8px 16px; font-size: 13px; }
.btn-lg { padding: 14px 32px; font-size: 15px; }
.btn-primary { background: var(--color-primary); color: #fff; }
.btn-primary:hover { background: var(--color-primary-dark); transform: translateY(-2px); box-shadow: 0 4px 14px rgba(232, 101, 26, 0.35); }
.btn-accent { background: var(--color-accent); color: #fff; }
.btn-accent:hover { background: var(--color-primary); transform: translateY(-2px); box-shadow: 0 4px 14px rgba(249, 115, 22, 0.35); }
.btn-secondary { background: var(--color-secondary); color: #fff; }
.btn-secondary:hover { background: var(--color-secondary-light); transform: translateY(-2px); box-shadow: 0 4px 14px rgba(26, 58, 92, 0.3); }
.btn-outline { border: 2px solid rgba(255,255,255,0.4); color: #fff; background: transparent; }
.btn-outline:hover { border-color: #fff; background: rgba(255,255,255,0.1); transform: translateY(-2px); }
.btn-outline-dark { border: 2px solid var(--color-border); color: var(--color-text); background: transparent; }
.btn-outline-dark:hover { border-color: var(--color-primary); color: var(--color-primary); transform: translateY(-2px); }
.btn-text { color: var(--color-primary); padding: 8px 0; background: none; }
.btn-text:hover { color: var(--color-primary-dark); }
.btn-text::after { display: none; }

/* ===== HEADER ===== */
.header { position: fixed; top: 0; left: 0; right: 0; height: var(--header-h); background: rgba(255,255,255,0.92); backdrop-filter: blur(12px); -webkit-backdrop-filter: blur(12px); z-index: 1000; transition: box-shadow var(--duration-slow) var(--ease-smooth), background var(--duration-slow) var(--ease-smooth); }
.header.scrolled { box-shadow: var(--shadow-md); background: rgba(255,255,255,0.97); }
.header-inner { display: flex; align-items: center; height: 100%; gap: 32px; }

.logo { display: flex; align-items: center; gap: 10px; flex-shrink: 0; }
.logo-icon { width: 32px; height: 32px; }
.logo-text { font-family: var(--font-heading); font-size: 18px; color: var(--color-secondary); letter-spacing: -0.02em; }
.logo-text strong { color: var(--color-primary); font-weight: 700; }

.nav { display: flex; align-items: center; gap: 28px; margin-left: auto; }
.nav-link { font-size: 14px; font-weight: 500; color: var(--color-text); position: relative; padding: 4px 0; transition: color var(--duration-fast) var(--ease-smooth); }
.nav-link::after { content: ''; position: absolute; bottom: -2px; left: 50%; width: 0; height: 2px; background: var(--color-primary); transition: width var(--duration-normal) var(--ease-out), left var(--duration-normal) var(--ease-out); border-radius: 1px; }
.nav-link:hover::after, .nav-link.active::after { width: 100%; left: 0; }
.nav-link:hover, .nav-link.active { color: var(--color-primary); }

.header-actions { display: flex; align-items: center; gap: 12px; margin-left: auto; }
.search-toggle { width: 38px; height: 38px; display: flex; align-items: center; justify-content: center; border-radius: 50%; color: var(--color-text-light); transition: all 0.2s; }
.search-toggle:hover { background: var(--color-bg); color: var(--color-primary); }
.search-box { position: absolute; top: 50%; right: 180px; transform: translateY(-50%); display: flex; align-items: center; background: var(--color-bg); border: 2px solid var(--color-border); border-radius: var(--radius); overflow: hidden; width: 0; opacity: 0; transition: all 0.3s ease; pointer-events: none; }
.search-box.active { width: 320px; opacity: 1; pointer-events: all; border-color: var(--color-primary); }
.search-input { flex: 1; border: none; outline: none; padding: 8px 14px; background: transparent; font-size: 14px; color: var(--color-text); }
.search-close { width: 32px; height: 32px; display: flex; align-items: center; justify-content: center; color: var(--color-text-light); flex-shrink: 0; }
.search-close:hover { color: var(--color-primary); }
.header-cta { flex-shrink: 0; }

.mobile-menu-toggle { display: none; flex-direction: column; gap: 5px; width: 28px; padding: 4px 0; }
.mobile-menu-toggle span { display: block; height: 2px; background: var(--color-text); border-radius: 2px; transition: all 0.3s; }

/* ===== PAGE BANNER ===== */
.page-banner { background: linear-gradient(135deg, var(--color-secondary) 0%, var(--color-secondary-light) 100%); padding: 40px 0 36px; margin-top: var(--header-h); color: #fff; }
.breadcrumb { display: flex; align-items: center; gap: 8px; font-size: 13px; color: rgba(255,255,255,0.6); margin-bottom: 12px; }
.breadcrumb a { color: rgba(255,255,255,0.6); transition: color 0.2s; }
.breadcrumb a:hover { color: #fff; }
.breadcrumb-sep { font-size: 11px; }
.page-banner-title { font-family: var(--font-heading); font-size: clamp(24px, 4vw, 36px); font-weight: 700; letter-spacing: -0.02em; margin-bottom: 6px; }
.page-banner-desc { font-size: 15px; color: rgba(255,255,255,0.75); max-width: 600px; }

/* ===== SHARED COMPONENTS ===== */
.section-header { display: flex; align-items: baseline; justify-content: space-between; margin-bottom: 20px; }
.section-title { font-family: var(--font-heading); font-size: 22px; font-weight: 700; color: var(--color-secondary); letter-spacing: -0.02em; }
.section-link { font-size: 13px; font-weight: 600; color: var(--color-primary); transition: color 0.2s; white-space: nowrap; }
.section-link:hover { color: var(--color-primary-dark); }
.section-footer { margin-top: 24px; text-align: center; }

/* Analysis Card (shared: index + comparativos) */
.analysis-card { background: var(--color-card); border-radius: var(--radius); overflow: hidden; border: 1px solid var(--color-border); transition: transform var(--duration-normal) var(--ease-out), box-shadow var(--duration-normal) var(--ease-out), border-color var(--duration-normal) var(--ease-smooth); will-change: transform; }
.analysis-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-xl); border-color: rgba(232, 101, 26, 0.3); }
.card-image-wrapper { display: block; position: relative; overflow: hidden; aspect-ratio: 16/10; }
.card-image { width: 100%; height: 100%; object-fit: cover; transition: transform var(--duration-slow) var(--ease-out); }
.analysis-card:hover .card-image { transform: scale(1.06); }
.card-badge { position: absolute; top: 10px; left: 10px; background: var(--color-primary); color: #fff; font-size: 11px; font-weight: 600; padding: 4px 12px; border-radius: 20px; text-transform: uppercase; letter-spacing: 0.05em; backdrop-filter: blur(4px); background: rgba(232, 101, 26, 0.9); }
.card-body { padding: 16px 18px; }
.card-title { font-family: var(--font-heading); font-size: 15px; font-weight: 600; line-height: 1.35; margin-bottom: 6px; color: var(--color-secondary); transition: color var(--duration-fast); }
.card-title a:hover { color: var(--color-primary); }
.card-excerpt { font-size: 13px; color: var(--color-text-light); line-height: 1.55; margin-bottom: 10px; display: -webkit-box; -webkit-line-clamp: 2; line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.card-meta { font-size: 12px; color: var(--color-text-light); }

/* Article item (shared: index sidebar + article sidebar) */
.articles-list { display: flex; flex-direction: column; gap: 6px; }
.article-item { display: flex; gap: 14px; padding: 12px; border-radius: var(--radius-sm); border-bottom: none; transition: background var(--duration-normal) var(--ease-smooth), box-shadow var(--duration-normal) var(--ease-smooth); }
.article-item:last-child { padding-bottom: 12px; }
.article-item:hover { background: rgba(232, 101, 26, 0.04); box-shadow: var(--shadow-sm); }
.article-thumb { flex-shrink: 0; width: 72px; height: 72px; border-radius: var(--radius-sm); overflow: hidden; box-shadow: var(--shadow-sm); }
.article-thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform var(--duration-slow) var(--ease-out); }
.article-item:hover .article-thumb img { transform: scale(1.08); }
.article-body { flex: 1; min-width: 0; display: flex; flex-direction: column; justify-content: center; }
.article-title { font-size: 14px; font-weight: 600; line-height: 1.4; margin-bottom: 6px; color: var(--color-text); display: -webkit-box; -webkit-line-clamp: 2; line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; transition: color var(--duration-fast); }
.article-title a:hover { color: var(--color-primary); }
.article-meta { display: flex; align-items: center; gap: 8px; font-size: 11.5px; color: var(--color-text-light); }
.article-author { font-weight: 500; }

/* ===== SCROLL ANIMATIONS ===== */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

.fade-ready { opacity: 0; transform: translateY(20px); }
.fade-in { animation: fadeInUp var(--duration-slow) var(--ease-out) forwards; }

/* ===== BACK TO TOP ===== */
.back-to-top { position: fixed; bottom: 28px; right: 28px; width: 44px; height: 44px; border-radius: 50%; background: var(--color-secondary); color: #fff; display: flex; align-items: center; justify-content: center; box-shadow: var(--shadow-lg); z-index: 900; opacity: 0; transform: translateY(12px); transition: opacity var(--duration-normal) var(--ease-out), transform var(--duration-normal) var(--ease-out), background var(--duration-fast); pointer-events: none; }
.back-to-top.visible { opacity: 1; transform: translateY(0); pointer-events: all; }
.back-to-top:hover { background: var(--color-primary); transform: translateY(-2px); }

/* ===== FOOTER ===== */
.footer { background: #142D47; color: rgba(255,255,255,0.75); padding: 48px 0 24px; }
.footer-grid { display: grid; grid-template-columns: 1.5fr 1fr 1fr 1fr; gap: 40px; margin-bottom: 32px; }
.logo-footer .logo-text { color: rgba(255,255,255,0.9); }
.footer-desc { font-size: 13px; line-height: 1.6; margin-top: 12px; color: rgba(255,255,255,0.55); max-width: 280px; }
.footer-links h4 { font-family: var(--font-heading); font-size: 14px; font-weight: 600; color: #fff; margin-bottom: 14px; }
.footer-links li { margin-bottom: 8px; }
.footer-links a { font-size: 13px; color: rgba(255,255,255,0.55); transition: color var(--duration-fast) var(--ease-smooth); }
.footer-links a:hover { color: var(--color-accent); transform: translateX(2px); }
.footer-links li { transition: transform var(--duration-fast) var(--ease-smooth); }
.footer-links li:hover { transform: translateX(2px); }
.footer-newsletter { display: flex; align-items: center; gap: 16px; padding: 20px 0; border-top: 1px solid rgba(255,255,255,0.1); border-bottom: 1px solid rgba(255,255,255,0.1); margin-bottom: 24px; flex-wrap: wrap; }
.newsletter-label { font-size: 14px; font-weight: 500; color: rgba(255,255,255,0.8); white-space: nowrap; }
.newsletter-form { display: flex; gap: 8px; flex: 1; max-width: 380px; }
.newsletter-input { flex: 1; padding: 8px 14px; border-radius: var(--radius-sm); border: 1px solid rgba(255,255,255,0.15); background: rgba(255,255,255,0.07); color: #fff; font-size: 13px; outline: none; transition: border-color 0.2s; }
.newsletter-input::placeholder { color: rgba(255,255,255,0.35); }
.newsletter-input:focus { border-color: var(--color-accent); }
.footer-bottom { display: flex; align-items: center; justify-content: space-between; }
.footer-social { display: flex; gap: 16px; }
.footer-social a { color: rgba(255,255,255,0.45); transition: color var(--duration-fast), transform var(--duration-normal) var(--ease-spring); }
.footer-social a:hover { color: var(--color-accent); transform: translateY(-2px); }
.footer-copy { font-size: 12px; color: rgba(255,255,255,0.35); }

/* ===== RESPONSIVE (shared) ===== */
@media (max-width: 768px) {
  :root { --header-h: 56px; }
  .nav { display: none; position: fixed; top: var(--header-h); left: 0; right: 0; background: #fff; flex-direction: column; padding: 16px 24px; gap: 0; box-shadow: var(--shadow-lg); border-top: 1px solid var(--color-border); }
  .nav.open { display: flex; }
  .nav-link { padding: 12px 0; border-bottom: 1px solid var(--color-border); width: 100%; }
  .nav-link:last-child { border-bottom: none; }
  .mobile-menu-toggle { display: flex; }
  .header-cta { display: none; }
  .search-box.active { width: 200px; right: 100px; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 24px; }
  .footer-brand { grid-column: 1 / -1; }
  .footer-bottom { flex-direction: column-reverse; gap: 16px; text-align: center; }
  .page-banner { padding: 28px 0 24px; }
  .page-banner-title { font-size: 24px; }
}

@media (max-width: 480px) {
  .container { padding: 0 16px; }
  .footer-grid { grid-template-columns: 1fr; }
  .newsletter-form { flex-direction: column; }
}

/* ===== SEARCH RESULTS ===== */
.search-results { padding: 40px 0; }
.search-result-item {
  padding: 24px 0;
  border-bottom: 1px solid var(--color-border);
}
.search-result-item:last-child { border-bottom: none; }
.search-result-item h2 { font-size: 20px; margin: 0 0 8px; }
.search-result-item h2 a { color: var(--color-secondary); text-decoration: none; }
.search-result-item h2 a:hover { color: var(--color-primary); }
.search-result-excerpt { color: var(--color-text); font-size: 15px; line-height: 1.6; }
.search-result-excerpt p { margin: 0; }

/* ===== 404 PAGE ===== */
.error-404-content { padding: 60px 0 80px; }
.error-404-box { max-width: 560px; margin: 0 auto; text-align: center; }
.error-404-code { display: block; font-family: var(--font-heading); font-size: clamp(80px, 15vw, 140px); font-weight: 700; line-height: 1; color: var(--color-primary); opacity: 0.15; margin-bottom: -16px; }
.error-404-box h2 { font-family: var(--font-heading); font-size: clamp(22px, 4vw, 28px); font-weight: 700; color: var(--color-secondary); margin-bottom: 12px; }
.error-404-box > p { font-size: 15px; color: var(--color-text-light); line-height: 1.6; margin-bottom: 28px; }
.error-404-actions { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }