/*
Theme Name: Coders4Future News
Theme URI: https://coders4future.com.br
Author: Coders4Future
Author URI: https://coders4future.com.br
Description: Portal de notícias tech profissional no estilo AI News — editorial, dark header, grid moderno.
Version: 2.0.0
License: GNU General Public License v2 or later
License URI: http://www.gnu.org/licenses/gpl-2.0.html
Text Domain: c4f-news
Tags: news, blog, technology, dark, responsive, custom-logo, custom-menu, featured-images
*/

/* ── RESET ─────────────────────────────────────────────────── */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{font-size:16px;scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}
img,video{max-width:100%;height:auto;display:block}
a{text-decoration:none;color:inherit}
ul,ol{list-style:none}
button{cursor:pointer;border:none;background:none;font:inherit;color:inherit}
input,textarea{font:inherit}

/* ── TOKENS ─────────────────────────────────────────────────── */
:root{
  /* cores */
  --black:   #000000;
  --white:   #ffffff;
  --cyan:    #00b8d9;
  --cyan-dk: #0097b3;
  --gray-50: #f8f9fa;
  --gray-100:#f1f3f5;
  --gray-200:#e9ecef;
  --gray-300:#dee2e6;
  --gray-400:#ced4da;
  --gray-500:#adb5bd;
  --gray-600:#6c757d;
  --gray-700:#495057;
  --gray-800:#343a40;
  --gray-900:#212529;

  /* tipografia */
  --font-sans:'DM Sans',system-ui,sans-serif;
  --font-head:'Barlow',system-ui,sans-serif;
  --font-mono:'JetBrains Mono',monospace;

  /* layout */
  --max-w:   1280px;
  --hdr-h:   64px;
  --topbar-h:36px;
  --gap:     24px;
  --radius:  4px;
  --radius-md:8px;
  --transition:.15s ease;
}

/* ── BASE ───────────────────────────────────────────────────── */
body{
  font-family:var(--font-sans);
  font-size:1rem;
  line-height:1.6;
  color:var(--gray-900);
  background:#fff;
}

.container{width:100%;max-width:var(--max-w);margin:0 auto;padding:0 20px}
@media(max-width:600px){.container{padding:0 14px}}

.site-main{margin-top:calc(var(--topbar-h) + var(--hdr-h));min-height:60vh}

/* ── TOPBAR (barra de publicações) ─────────────────────────── */
#topbar{
  position:fixed;top:0;left:0;right:0;
  height:var(--topbar-h);
  background:var(--black);
  z-index:2000;
  display:flex;align-items:center;
  border-bottom:1px solid #222;
}
.topbar-inner{
  display:flex;align-items:center;justify-content:center;
  width:100%;
  font-size:.72rem;
  color:var(--gray-500);
  gap:6px;
}
.topbar-brand{
  color:var(--white);
  font-weight:700;
  font-size:.78rem;
  letter-spacing:.04em;
  display:flex;align-items:center;gap:4px;
}
.topbar-brand svg{width:12px;height:12px;fill:var(--cyan)}
.topbar-links{display:flex;align-items:center;gap:0;overflow-x:auto;scrollbar-width:none}
.topbar-links::-webkit-scrollbar{display:none}
.topbar-links a{
  padding:0 10px;
  font-size:.7rem;
  color:var(--gray-500);
  border-right:1px solid #333;
  white-space:nowrap;
  transition:color var(--transition);
}
.topbar-links a:first-child{border-left:1px solid #333}
.topbar-links a:hover{color:var(--white)}
@media(max-width:768px){.topbar-links{display:none}}

/* ── HEADER PRINCIPAL ───────────────────────────────────────── */
#site-header{
  position:fixed;top:var(--topbar-h);left:0;right:0;
  height:var(--hdr-h);
  background:var(--black);
  z-index:1900;
  transition:transform .3s ease, box-shadow .3s ease;
}
#site-header.scrolled{box-shadow:0 2px 16px rgba(0,0,0,.4)}
#site-header.hide{transform:translateY(calc(-100% - var(--topbar-h)))}

.hdr-inner{
  display:flex;align-items:center;height:100%;gap:20px;
}

/* Logo */
.site-logo{
  flex-shrink:0;
  display:flex;align-items:center;
}
.site-logo img{height:38px;width:auto}
.site-logo-text{
  font-family:var(--font-head);
  font-size:1.6rem;font-weight:800;
  color:var(--white);
  letter-spacing:-.02em;
}
.site-logo-text em{font-style:normal;color:var(--cyan)}

/* Separador vertical */
.hdr-sep{width:1px;height:28px;background:#333;flex-shrink:0}

/* Nav principal */
.hdr-nav{display:flex;align-items:center;gap:2px;flex:1}
.hdr-nav > li{position:relative}
.hdr-nav > li > a,
.hdr-nav > li > button{
  display:flex;align-items:center;gap:4px;
  padding:8px 14px;
  font-size:.875rem;font-weight:500;
  color:var(--white);
  border-radius:var(--radius);
  transition:background var(--transition);
  white-space:nowrap;
  background:none;
}
.hdr-nav > li > a:hover,
.hdr-nav > li > button:hover{background:#1a1a1a}
.hdr-nav > li > button svg{transition:transform .2s}
.hdr-nav > li.open > button svg{transform:rotate(180deg)}

/* Dropdown */
.hdr-dropdown{
  display:none;
  position:absolute;top:calc(100% + 8px);left:0;
  min-width:220px;
  background:var(--black);
  border:1px solid #222;
  border-radius:var(--radius-md);
  padding:8px 0;
  z-index:100;
  box-shadow:0 8px 32px rgba(0,0,0,.5);
}
.hdr-nav > li.open .hdr-dropdown{display:block}
.hdr-dropdown a{
  display:block;
  padding:9px 18px;
  font-size:.82rem;
  color:var(--gray-400);
  transition:color var(--transition),background var(--transition);
}
.hdr-dropdown a:hover{color:var(--white);background:#111}

/* Ações direita */
.hdr-actions{display:flex;align-items:center;gap:8px;margin-left:auto}
.hdr-socials{display:flex;align-items:center;gap:0}
.hdr-socials a{
  display:flex;align-items:center;justify-content:center;
  width:34px;height:34px;
  color:var(--gray-500);
  transition:color var(--transition);
}
.hdr-socials a:hover{color:var(--white)}
.hdr-socials .sep{width:1px;height:18px;background:#333;margin:0 4px}

/* Botão Subscribe */
.btn-subscribe{
  display:inline-flex;align-items:center;
  padding:8px 18px;
  background:var(--cyan);
  color:var(--black) !important;
  font-size:.82rem;font-weight:700;
  border-radius:var(--radius);
  transition:background var(--transition),transform var(--transition);
}
.btn-subscribe:hover{background:var(--cyan-dk);transform:translateY(-1px)}

/* Busca */
.hdr-search-btn{
  display:flex;align-items:center;justify-content:center;
  width:36px;height:36px;
  color:var(--gray-500);
  border-radius:var(--radius);
  transition:color var(--transition),background var(--transition);
}
.hdr-search-btn:hover{color:var(--white);background:#1a1a1a}

/* Mobile toggle */
.hdr-mobile-toggle{
  display:none;
  flex-direction:column;gap:5px;
  width:36px;height:36px;align-items:center;justify-content:center;
  color:var(--white);border-radius:var(--radius);
}
.hdr-mobile-toggle span{display:block;width:20px;height:2px;background:currentColor;border-radius:2px;transition:.2s}
@media(max-width:900px){
  .hdr-mobile-toggle{display:flex}
  .hdr-nav{
    display:none;position:fixed;
    top:calc(var(--topbar-h) + var(--hdr-h));left:0;right:0;
    background:var(--black);border-bottom:1px solid #222;
    flex-direction:column;align-items:flex-start;
    padding:12px 0;gap:0;z-index:1800;
  }
  .hdr-nav.open{display:flex}
  .hdr-nav > li{width:100%}
  .hdr-nav > li > a,
  .hdr-nav > li > button{width:100%;border-radius:0;padding:12px 20px}
  .hdr-dropdown{
    position:static;border:none;border-top:1px solid #1a1a1a;
    border-radius:0;box-shadow:none;background:#0a0a0a;
    padding:0;
  }
  .hdr-dropdown a{padding:10px 32px}
  .hdr-socials,.topbar-links{display:none}
}

/* ── SEARCH OVERLAY ─────────────────────────────────────────── */
#search-overlay{
  display:none;position:fixed;inset:0;
  background:rgba(0,0,0,.96);
  z-index:3000;
  flex-direction:column;align-items:center;
  padding:80px 20px 40px;
}
#search-overlay.open{display:flex}
#search-overlay input{
  width:100%;max-width:680px;
  padding:18px 24px;font-size:1.3rem;
  background:#111;border:2px solid var(--cyan);
  border-radius:var(--radius-md);
  color:var(--white);outline:none;
}
#search-overlay input::placeholder{color:#444}
#search-results-overlay{width:100%;max-width:680px;margin-top:16px}
.search-result-item{
  display:flex;gap:12px;align-items:center;
  padding:12px;border-radius:var(--radius-md);
  transition:background var(--transition);
  color:var(--white);
}
.search-result-item:hover{background:#111}
.search-result-item img{width:60px;height:44px;object-fit:cover;border-radius:var(--radius);flex-shrink:0}
.search-result-title{font-size:.9rem;font-weight:600;line-height:1.3}
.search-result-meta{font-size:.73rem;color:var(--gray-600);margin-top:3px}
.search-overlay-close{
  position:absolute;top:24px;right:24px;
  font-size:1.5rem;color:var(--gray-600);
  transition:color var(--transition);cursor:pointer;
}
.search-overlay-close:hover{color:var(--white)}

/* ── HOMEPAGE GRID ──────────────────────────────────────────── */
.home-grid{
  display:grid;
  grid-template-columns:1fr 320px;
  gap:32px;
  padding:32px 0 48px;
}
@media(max-width:960px){.home-grid{grid-template-columns:1fr}}

/* Grid de posts principal */
.posts-main-grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:20px;
}
@media(max-width:900px){.posts-main-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:540px){.posts-main-grid{grid-template-columns:1fr}}

/* Grid hero: 1 grande + coluna de lista */
.hero-editorial{
  display:grid;
  grid-template-columns:1fr 300px;
  gap:0;
  border:1px solid var(--gray-200);
  border-radius:var(--radius-md);
  overflow:hidden;
  margin-bottom:32px;
}
@media(max-width:768px){.hero-editorial{grid-template-columns:1fr}}

.hero-main{position:relative;min-height:420px;background:var(--gray-100)}
@media(max-width:768px){.hero-main{min-height:260px}}
.hero-main img{width:100%;height:100%;object-fit:cover;position:absolute;inset:0}
.hero-main-overlay{
  position:absolute;inset:0;
  background:linear-gradient(to top,rgba(0,0,0,.9) 0%,rgba(0,0,0,.3) 60%,transparent 100%);
}
.hero-main-content{
  position:absolute;bottom:0;left:0;right:0;
  padding:28px;
}
.hero-side{
  background:var(--white);
  border-left:1px solid var(--gray-200);
  display:flex;flex-direction:column;
}
@media(max-width:768px){.hero-side{border-left:none;border-top:1px solid var(--gray-200)}}
.hero-side-item{
  padding:16px 18px;
  border-bottom:1px solid var(--gray-100);
  transition:background var(--transition);
}
.hero-side-item:hover{background:var(--gray-50)}
.hero-side-item:last-child{border-bottom:none}

/* ── CARD DE POST ───────────────────────────────────────────── */
.post-card{display:flex;flex-direction:column;background:var(--white)}
.post-card-thumb{
  position:relative;width:100%;
  padding-top:60%;overflow:hidden;
  background:var(--gray-100);
}
.post-card-thumb img{
  position:absolute;inset:0;
  width:100%;height:100%;object-fit:cover;
  transition:transform .4s ease;
}
.post-card:hover .post-card-thumb img{transform:scale(1.04)}
.post-card-cat{
  position:absolute;top:10px;left:10px;
  font-size:.65rem;font-weight:700;
  text-transform:uppercase;letter-spacing:.08em;
  color:var(--cyan);z-index:1;
  transition:color var(--transition);
}
.post-card-cat:hover{color:var(--cyan-dk)}
.post-card-body{padding:14px 0 20px;flex:1;display:flex;flex-direction:column;gap:8px}
.post-card-title{
  font-family:var(--font-head);
  font-size:1.05rem;font-weight:700;line-height:1.25;
  color:var(--gray-900);
  transition:color var(--transition);
  display:-webkit-box;-webkit-line-clamp:3;-webkit-box-orient:vertical;overflow:hidden;
}
.post-card-title:hover{color:var(--cyan)}
.post-card-meta{
  margin-top:auto;
  font-size:.73rem;color:var(--gray-500);
  display:flex;align-items:center;gap:6px;
}
.post-card-meta .dot{width:3px;height:3px;border-radius:50%;background:var(--gray-300)}

/* ── SEÇÃO HEADING ──────────────────────────────────────────── */
.section-head{
  display:flex;align-items:center;gap:10px;
  padding-bottom:12px;
  border-bottom:3px solid var(--black);
  margin-bottom:20px;
}
.section-head h2{
  font-family:var(--font-head);
  font-size:.85rem;font-weight:800;
  text-transform:uppercase;letter-spacing:.1em;
  color:var(--black);
}
.section-head a.see-all{
  margin-left:auto;
  font-size:.75rem;color:var(--cyan);font-weight:600;
  transition:color var(--transition);
}
.section-head a.see-all:hover{color:var(--cyan-dk)}

.section{margin-bottom:40px}

/* ── HERO CATEGORY TAG ──────────────────────────────────────── */
.cat-tag{
  display:inline-block;
  font-size:.65rem;font-weight:700;
  text-transform:uppercase;letter-spacing:.08em;
  color:var(--cyan);
  margin-bottom:8px;
}
.cat-tag:hover{color:var(--cyan-dk)}

/* ── HERO TITLE (home) ──────────────────────────────────────── */
.hero-title{
  font-family:var(--font-head);
  font-size:clamp(1.4rem,3vw,2rem);
  font-weight:800;line-height:1.15;
  color:var(--white);
  margin-bottom:10px;
}
.hero-title a{color:inherit;transition:color var(--transition)}
.hero-title a:hover{color:var(--cyan)}
.hero-meta{font-size:.75rem;color:rgba(255,255,255,.6)}

/* Hero side items */
.hsi-cat{font-size:.6rem;font-weight:700;text-transform:uppercase;letter-spacing:.08em;color:var(--cyan);margin-bottom:5px}
.hsi-title{
  font-family:var(--font-head);
  font-size:.9rem;font-weight:700;line-height:1.3;
  color:var(--gray-900);
  transition:color var(--transition);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
}
.hsi-title:hover{color:var(--cyan)}
.hsi-date{font-size:.7rem;color:var(--gray-500);margin-top:4px}

/* ── SIDEBAR ────────────────────────────────────────────────── */
.sidebar{display:flex;flex-direction:column;gap:32px}
.sw{/* sidebar widget */}
.sw-title{
  font-family:var(--font-head);
  font-size:.8rem;font-weight:800;
  text-transform:uppercase;letter-spacing:.1em;
  color:var(--black);
  padding-bottom:10px;
  border-bottom:3px solid var(--black);
  margin-bottom:16px;
}

/* Lista lateral */
.side-post{display:flex;gap:12px;padding:12px 0;border-bottom:1px solid var(--gray-100)}
.side-post:last-child{border-bottom:none}
.side-post-thumb{
  flex-shrink:0;width:80px;height:58px;
  border-radius:var(--radius);overflow:hidden;background:var(--gray-100);
}
.side-post-thumb img{width:100%;height:100%;object-fit:cover}
.side-post-cat{font-size:.6rem;font-weight:700;text-transform:uppercase;letter-spacing:.07em;color:var(--cyan);margin-bottom:3px}
.side-post-title{
  font-size:.83rem;font-weight:700;line-height:1.3;
  color:var(--gray-900);
  display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;
  transition:color var(--transition);
}
.side-post-title:hover{color:var(--cyan)}
.side-post-date{font-size:.68rem;color:var(--gray-500);margin-top:3px}

/* Newsletter sidebar */
.sw-newsletter p{font-size:.83rem;color:var(--gray-600);line-height:1.6;margin-bottom:14px}
.sw-newsletter input{
  width:100%;padding:10px 14px;
  border:1px solid var(--gray-300);border-radius:var(--radius);
  font-size:.875rem;margin-bottom:8px;outline:none;
  transition:border-color var(--transition);
}
.sw-newsletter input:focus{border-color:var(--cyan)}
.sw-newsletter button{
  width:100%;padding:10px;
  background:var(--black);color:var(--white);
  font-size:.83rem;font-weight:700;
  border-radius:var(--radius);
  transition:background var(--transition);
}
.sw-newsletter button:hover{background:#222}

/* Tags */
.tag-cloud{display:flex;flex-wrap:wrap;gap:6px}
.tag-cloud a{
  padding:4px 12px;border-radius:999px;
  font-size:.72rem;font-weight:600;
  border:1px solid var(--gray-300);
  color:var(--gray-700);
  transition:all var(--transition);
}
.tag-cloud a:hover{background:var(--black);border-color:var(--black);color:var(--white)}

/* ── PÁGINA DO POST (SINGLE) ────────────────────────────────── */
.single-layout{
  display:grid;
  grid-template-columns:1fr 320px;
  gap:40px;
  padding:32px 0 60px;
}
@media(max-width:960px){.single-layout{grid-template-columns:1fr}}

/* Categoria + título */
.single-cat{
  display:inline-block;
  font-size:.7rem;font-weight:700;
  text-transform:uppercase;letter-spacing:.1em;
  color:var(--cyan);margin-bottom:12px;
}
.single-title{
  font-family:var(--font-head);
  font-size:clamp(1.7rem,3.5vw,2.6rem);
  font-weight:800;line-height:1.1;
  color:var(--black);
  margin-bottom:16px;
}
.single-meta{
  display:flex;align-items:center;flex-wrap:wrap;
  gap:12px;font-size:.8rem;color:var(--gray-600);
  padding-bottom:16px;
  border-bottom:1px solid var(--gray-200);
  margin-bottom:24px;
}
.single-meta strong{color:var(--gray-900);font-weight:600}
.single-meta .dot{color:var(--gray-300)}

/* Imagem do post */
.single-thumb{
  width:100%;border-radius:var(--radius-md);overflow:hidden;
  margin-bottom:28px;
  background:var(--gray-100);
}
.single-thumb img{width:100%}

/* Conteúdo */
.entry-content{
  font-size:1.05rem;line-height:1.8;
  color:var(--gray-800);max-width:720px;
}
.entry-content h2{font-family:var(--font-head);font-size:1.5rem;font-weight:800;color:var(--black);margin:2em 0 .6em}
.entry-content h3{font-family:var(--font-head);font-size:1.2rem;font-weight:700;color:var(--black);margin:1.6em 0 .5em}
.entry-content p{margin-bottom:1.3em}
.entry-content a{color:var(--cyan);text-decoration:underline;text-decoration-color:transparent;transition:text-decoration-color var(--transition)}
.entry-content a:hover{text-decoration-color:var(--cyan)}
.entry-content ul,.entry-content ol{padding-left:1.5em;margin-bottom:1.3em}
.entry-content li{margin-bottom:.4em}
.entry-content blockquote{
  border-left:3px solid var(--cyan);
  padding:14px 20px;margin:1.8em 0;
  background:var(--gray-50);
  border-radius:0 var(--radius) var(--radius) 0;
  font-style:italic;color:var(--gray-700);
}
.entry-content code{
  font-family:var(--font-mono);font-size:.875em;
  background:var(--gray-100);padding:2px 6px;
  border-radius:3px;color:var(--gray-900);
}
.entry-content pre{
  background:var(--gray-900);border-radius:var(--radius-md);
  padding:20px;overflow-x:auto;margin-bottom:1.4em;
}
.entry-content pre code{background:none;color:#e2e8f0;font-size:.875rem}
.entry-content img{border-radius:var(--radius-md);margin:1.5em 0}
.entry-content strong{font-weight:700;color:var(--black)}

/* Post tags */
.post-tags{display:flex;flex-wrap:wrap;gap:6px;margin-top:32px;padding-top:24px;border-top:1px solid var(--gray-200)}
.post-tags a{
  padding:5px 14px;border-radius:999px;
  font-size:.73rem;font-weight:600;
  border:1px solid var(--gray-300);color:var(--gray-700);
  transition:all var(--transition);
}
.post-tags a:hover{background:var(--black);border-color:var(--black);color:var(--white)}

/* Share bar */
.share-bar{
  display:flex;align-items:center;flex-wrap:wrap;gap:8px;
  padding:18px 0;
  border-top:1px solid var(--gray-200);
  border-bottom:1px solid var(--gray-200);
  margin:24px 0;
}
.share-label{font-size:.75rem;font-weight:700;text-transform:uppercase;letter-spacing:.07em;color:var(--gray-500)}
.share-btn{
  display:inline-flex;align-items:center;gap:6px;
  padding:7px 14px;border-radius:var(--radius);
  font-size:.78rem;font-weight:600;
  transition:opacity var(--transition);
}
.share-btn:hover{opacity:.85}
.share-btn.tw {background:#000;color:#fff}
.share-btn.wa {background:#25d366;color:#fff}
.share-btn.li {background:#0077b5;color:#fff}
.share-btn.cp {background:var(--gray-100);color:var(--gray-900);border:1px solid var(--gray-300)}

/* Author box (sidebar do single) */
.author-box{
  border:2px solid var(--cyan);
  border-radius:var(--radius-md);
  padding:20px;background:var(--white);
}
.author-box-head{
  font-family:var(--font-head);
  font-size:.75rem;font-weight:800;
  text-transform:uppercase;letter-spacing:.1em;
  color:var(--cyan);margin-bottom:14px;
  text-align:center;
}
.author-info{display:flex;gap:14px;align-items:flex-start;margin-bottom:12px}
.author-avatar{width:56px;height:56px;border-radius:50%;overflow:hidden;flex-shrink:0;background:var(--gray-200)}
.author-avatar img{width:100%;height:100%;object-fit:cover}
.author-name{font-size:.95rem;font-weight:700;color:var(--black);margin-bottom:2px}
.author-role{font-size:.75rem;color:var(--gray-500)}
.author-bio{font-size:.8rem;line-height:1.65;color:var(--gray-700)}
.author-links{display:flex;gap:6px;flex-wrap:wrap;margin-top:10px}
.author-links a{
  font-size:.72rem;color:var(--cyan);font-weight:600;
  transition:color var(--transition);
}
.author-links a:hover{color:var(--cyan-dk)}

/* Related posts */
.related-section{
  background:var(--gray-50);
  border-top:1px solid var(--gray-200);
  padding:40px 0;margin-top:40px;
}
.related-grid{
  display:grid;grid-template-columns:repeat(3,1fr);
  gap:20px;margin-top:20px;
}
@media(max-width:768px){.related-grid{grid-template-columns:repeat(2,1fr)}}
@media(max-width:480px){.related-grid{grid-template-columns:1fr}}

/* ── ARCHIVE / CATEGORY ─────────────────────────────────────── */
.archive-header{padding:28px 0 20px}
.archive-cat-badge{
  display:inline-block;
  font-size:.7rem;font-weight:700;
  text-transform:uppercase;letter-spacing:.1em;
  color:var(--cyan);margin-bottom:6px;
}
.archive-title{
  font-family:var(--font-head);
  font-size:clamp(1.6rem,4vw,2.4rem);
  font-weight:800;color:var(--black);
  margin-bottom:6px;
}
.archive-desc{font-size:.9rem;color:var(--gray-600);max-width:600px}

/* ── PAGINAÇÃO ──────────────────────────────────────────────── */
.pagination{display:flex;align-items:center;justify-content:center;gap:4px;padding:40px 0}
.pagination .page-numbers{
  display:flex;align-items:center;justify-content:center;
  min-width:38px;height:38px;padding:0 8px;
  border-radius:var(--radius);font-size:.875rem;font-weight:600;
  border:1px solid var(--gray-300);color:var(--gray-700);
  transition:all var(--transition);
}
.pagination .page-numbers:hover{background:var(--black);border-color:var(--black);color:var(--white)}
.pagination .page-numbers.current{background:var(--cyan);border-color:var(--cyan);color:var(--black)}

/* ── BARRA DE PROGRESSO DE LEITURA ─────────────────────────── */
#reading-bar{
  position:fixed;top:calc(var(--topbar-h) + var(--hdr-h));left:0;
  height:3px;background:var(--cyan);
  width:0%;z-index:1800;
  transition:width .1s linear;
}

/* ── SCROLL TO TOP ──────────────────────────────────────────── */
#scroll-top{
  position:fixed;bottom:24px;right:24px;
  width:42px;height:42px;
  background:var(--black);color:var(--white);
  border-radius:50%;
  display:none;align-items:center;justify-content:center;
  font-size:1.1rem;z-index:999;
  box-shadow:0 4px 16px rgba(0,0,0,.2);
  transition:transform var(--transition),background var(--transition);
}
#scroll-top.show{display:flex}
#scroll-top:hover{background:#222;transform:translateY(-2px)}

/* ── FOOTER ─────────────────────────────────────────────────── */
#site-footer{
  background:var(--black);
  color:var(--white);
  margin-top:60px;
}

/* Subscribe strip */
.footer-subscribe{
  padding:40px 0;
  border-bottom:1px solid #1a1a1a;
  display:grid;
  grid-template-columns:1fr auto;
  gap:24px;align-items:center;
}
@media(max-width:640px){.footer-subscribe{grid-template-columns:1fr}}
.footer-subscribe-title{
  font-family:var(--font-head);
  font-size:1.6rem;font-weight:800;
  color:var(--cyan);text-transform:uppercase;
  letter-spacing:.04em;margin-bottom:6px;
}
.footer-subscribe-desc{font-size:.85rem;color:var(--gray-500);max-width:580px}
.footer-subscribe-btn{
  display:inline-flex;align-items:center;gap:8px;
  padding:12px 28px;
  border:2px solid var(--white);
  border-radius:var(--radius);
  font-size:.875rem;font-weight:700;
  color:var(--white);
  white-space:nowrap;
  transition:all var(--transition);
}
.footer-subscribe-btn:hover{background:var(--white);color:var(--black)}

/* Footer grid */
.footer-main{
  display:grid;
  grid-template-columns:200px repeat(4,1fr);
  gap:40px;
  padding:40px 0;
  border-bottom:1px solid #1a1a1a;
}
@media(max-width:900px){.footer-main{grid-template-columns:1fr 1fr 1fr}}
@media(max-width:600px){.footer-main{grid-template-columns:1fr 1fr}}

.footer-logo img{height:36px;width:auto;margin-bottom:16px}
.footer-logo-text{
  font-family:var(--font-head);
  font-size:1.4rem;font-weight:800;
  color:var(--white);margin-bottom:12px;
}
.footer-logo-text em{font-style:normal;color:var(--cyan)}
.footer-socials{display:flex;gap:8px;margin-bottom:12px}
.footer-socials a{
  display:flex;align-items:center;justify-content:center;
  width:34px;height:34px;
  border:1px solid #333;border-radius:var(--radius);
  color:var(--gray-500);
  transition:all var(--transition);
}
.footer-socials a:hover{border-color:var(--cyan);color:var(--cyan)}

.footer-col-title{
  font-size:.72rem;font-weight:800;
  text-transform:uppercase;letter-spacing:.1em;
  color:var(--white);
  margin-bottom:16px;padding-bottom:10px;
  border-bottom:1px solid #1a1a1a;
}
.footer-col ul{display:flex;flex-direction:column;gap:9px}
.footer-col ul li a{
  font-size:.83rem;color:var(--gray-500);
  transition:color var(--transition);
}
.footer-col ul li a:hover{color:var(--white)}

.footer-bottom{
  display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:10px;
  padding:18px 0;
}
.footer-bottom p{font-size:.75rem;color:var(--gray-600)}
.footer-bottom a{color:var(--gray-500);transition:color var(--transition)}
.footer-bottom a:hover{color:var(--white)}

/* ── 404 ────────────────────────────────────────────────────── */
.page-404{padding:100px 0;text-align:center}
.page-404-num{
  font-family:var(--font-head);font-size:9rem;font-weight:900;
  color:var(--gray-200);line-height:1;margin-bottom:16px;
}
.page-404 h1{font-size:1.8rem;font-weight:800;margin-bottom:10px}
.page-404 p{color:var(--gray-600);margin-bottom:28px}
.btn-back{
  display:inline-block;padding:12px 28px;
  background:var(--black);color:var(--white);
  font-weight:700;border-radius:var(--radius);
  transition:background var(--transition);
}
.btn-back:hover{background:#222}

/* ── UTILITIES ──────────────────────────────────────────────── */
.mb-8{margin-bottom:8px}
.mb-16{margin-bottom:16px}
.mb-24{margin-bottom:24px}
.mb-32{margin-bottom:32px}
.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0)}