:root {
  --accent: #3291ff;
  --accent-hover: #1a80f0;
  --accent-light: #e8f4fd;
  --accent-glow: rgba(50,145,255,.2);
  --bg: #f4f7fb;
  --bg-gradient: linear-gradient(180deg, #f4f7fb 0%, #edf2f8 100%);
  --card-bg: #ffffff;
  --sidebar-bg: #ffffff;
  --header-bg: #ffffff;
  --header-text: #1a1e2b;
  --sidebar-text: #556;
  --sidebar-text-dim: rgba(0,0,0,.35);
  --sidebar-hover-bg: #e8f4fd;
  --sidebar-active-bg: #e8f4fd;
  --sidebar-border: #e2e6ec;
  --header-border: #e2e6ec;
  --search-bg: #f5f7fb;
  --search-text: #1a1e2b;
  --search-placeholder: #8a8f9c;
  --search-border: #e2e6ec;
  --search-results-bg: #fff;
  --search-results-text: #1a1e2b;
  --search-results-border: #eef1f5;
  --search-results-hover: #e8f4fd;
  --search-results-shadow: rgba(0,0,0,.1);
  --text: #1a1e2b;
  --text-dim: #556;
  --text-light: #8a8f9c;
  --border: #e2e6ec;
  --border-light: #eef1f5;
  --pre-bg: #f8fafd;
  --pre-text: #334;
  --command-bg: #f5f8fc;
  --command-text: #1a1e2b;
  --key-bg: #f0f4f9;
  --key-border: #d8dde4;
  --key-text: #2c3e50;
  --tr-even: #f9fafc;
  --success: #10b981;
  --success-light: #ecfdf5;
  --warning: #f59e0b;
  --warning-light: #fffbea;
  --error: #ef4444;
  --error-light: #fef5f5;
  --screenshot-bg: linear-gradient(135deg,#eef6ff,#e4f0fb);
  --screenshot-text: #7a9bc0;
  --screenshot-label: #8faac8;
  --plan-featured-bg: linear-gradient(180deg,#f5faff,#fff);
  --header-toggle-color: #1a1e2b;
  --header-toggle-hover: #f0f4f8;
  --sidebar-width: 270px;
  --header-height: 60px;
  --radius: 10px;
  --radius-sm: 6px;
  --troubleshoot-bg: #fffbea;
  --troubleshoot-border: #ffe082;
  --troubleshoot-h: #e67e00;
  --troubleshoot-text: #8b6914;
}

/* ===== DARK MODE ===== */
body.dark {
  --bg: #111620;
  --bg-gradient: #111620;
  --card-bg: #181f2c;
  --sidebar-bg: #0c111a;
  --header-bg: #0a0e16;
  --header-text: #e0e4ec;
  --sidebar-text: #a0a8b8;
  --sidebar-text-dim: rgba(255,255,255,.3);
  --sidebar-hover-bg: rgba(50,145,255,.06);
  --sidebar-active-bg: rgba(50,145,255,.1);
  --sidebar-border: rgba(255,255,255,.04);
  --header-border: rgba(255,255,255,.06);
  --search-bg: rgba(255,255,255,.04);
  --search-text: #e0e4ec;
  --search-placeholder: rgba(255,255,255,.15);
  --search-border: rgba(255,255,255,.08);
  --search-results-bg: #141b27;
  --search-results-text: #c0c8d4;
  --search-results-border: rgba(255,255,255,.04);
  --search-results-hover: rgba(50,145,255,.08);
  --search-results-shadow: rgba(0,0,0,.5);
  --text: #d0d6e0;
  --text-dim: #8892a0;
  --text-light: #6b7482;
  --border: #2a3344;
  --border-light: #222a38;
  --accent-light: rgba(50,145,255,.1);
  --accent-glow: rgba(50,145,255,.25);
  --pre-bg: #151c28;
  --pre-text: #b0bdd0;
  --command-bg: #151c28;
  --command-text: #c0cde0;
  --key-bg: rgba(255,255,255,.04);
  --key-border: #2a3344;
  --key-text: #b0bdd0;
  --tr-even: rgba(255,255,255,.02);
  --screenshot-bg: linear-gradient(135deg,#1a2332,#151e2b);
  --screenshot-text: #5a6d88;
  --screenshot-label: #4a5d78;
  --plan-featured-bg: linear-gradient(180deg,rgba(50,145,255,.06),rgba(50,145,255,.02));
  --header-toggle-color: rgba(255,255,255,.6);
  --header-toggle-hover: rgba(255,255,255,.06);
  --troubleshoot-bg: rgba(230,126,34,.08);
  --troubleshoot-border: rgba(230,126,34,.2);
  --troubleshoot-h: #f59e0b;
  --troubleshoot-text: #d4a373;
}

/* ===== TEMA TOGGLE ===== */
.theme-toggle{position:fixed;bottom:22px;right:72px;width:42px;height:42px;border-radius:50%;background:var(--card-bg);color:var(--header-text);border:1px solid var(--border);cursor:pointer;font-size:16px;display:flex;align-items:center;justify-content:center;transition:all .25s;z-index:500;box-shadow:0 2px 8px rgba(0,0,0,.06)}
.theme-toggle:hover{background:var(--accent-light);border-color:var(--accent);color:var(--accent);transform:scale(1.08);box-shadow:0 4px 14px var(--accent-glow)}
body.dark .theme-toggle{border-color:rgba(255,255,255,.1);background:var(--sidebar-bg);box-shadow:0 2px 8px rgba(0,0,0,.3)}
body.dark .theme-toggle:hover{border-color:var(--accent);box-shadow:0 4px 14px rgba(50,145,255,.3)}

*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;scroll-padding-top:calc(var(--header-height) + 28px)}
body{font-family:'Inter','Segoe UI',system-ui,-apple-system,sans-serif;background:var(--bg-gradient);color:var(--text);line-height:1.72;font-size:14.5px;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;font-feature-settings:'cv02','cv03','cv04','cv11';min-height:100vh;transition:background .3s,color .3s}
a{color:var(--accent);text-decoration:none;transition:color .2s}
a:hover{color:var(--accent-hover)}
img{max-width:100%;height:auto;border-radius:var(--radius-sm)}
code{font-family:'JetBrains Mono','Cascadia Code',Consolas,monospace;font-size:.84em;background:var(--accent-light);padding:2px 7px;border-radius:4px;color:#c7254e}
body.dark code{color:#ff6b9d}
pre{background:var(--pre-bg);color:var(--pre-text);padding:18px 22px;border-radius:var(--radius);overflow-x:auto;font-size:12.5px;line-height:1.6;margin:16px 0;border:1px solid var(--border);position:relative;transition:background .3s,color .3s,border-color .3s}
pre::before{content:"code";position:absolute;top:8px;right:14px;font-size:10px;text-transform:uppercase;letter-spacing:1px;color:var(--text-light);font-family:'Inter',system-ui,sans-serif}
pre code{background:none;padding:0;color:inherit;font-size:inherit}
table{width:100%;border-collapse:collapse;margin:16px 0;font-size:13.5px;border-radius:var(--radius);overflow:hidden;border:1px solid var(--border)}
th,td{padding:10px 14px;border:1px solid var(--border);text-align:left}
th{background:var(--accent);color:#fff;font-weight:500;font-size:11px;text-transform:uppercase;letter-spacing:.6px;border-color:var(--accent-hover)}
tr:nth-child(even){background:var(--tr-even)}
td{color:var(--text-dim)}
blockquote{border-left:4px solid var(--accent);padding:14px 18px;margin:16px 0;background:var(--accent-light);border-radius:0 var(--radius) var(--radius) 0;font-size:14px;color:var(--text-dim);line-height:1.65;transition:background .3s}
blockquote strong{color:var(--text)}
blockquote.warning{border-left-color:var(--warning);background:var(--warning-light)}
blockquote.danger{border-left-color:var(--error);background:var(--error-light)}
blockquote.success{border-left-color:var(--success);background:var(--success-light)}
blockquote.tip{border-left-color:#8b5cf6;background:#f5f3ff}
body.dark blockquote.tip{background:rgba(139,92,246,.08)}

/* Header */
.header{position:fixed;top:0;left:0;right:0;height:var(--header-height);background:var(--header-bg);color:var(--header-text);display:flex;align-items:center;padding:0 24px;z-index:1000;border-bottom:1px solid var(--header-border);box-shadow:0 1px 4px rgba(0,0,0,.04);transition:background .3s,border-color .3s}
body.dark .header{box-shadow:0 1px 0 rgba(255,255,255,.02),0 4px 24px rgba(0,0,0,.3)}
.header-logo{font-size:20px;font-weight:700;letter-spacing:-.6px;user-select:none;display:flex;align-items:center;gap:1px}
.header-logo span:first-child{color:var(--accent);font-weight:800;background:linear-gradient(135deg,var(--accent),#60a5fa);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.header-logo span:last-child{color:var(--header-text);font-weight:300;letter-spacing:-.3px}
.header-search{flex:1;max-width:420px;margin:0 24px;position:relative}
.header-search input{width:100%;padding:9px 16px 9px 40px;border:1.5px solid var(--search-border);border-radius:10px;font-size:13px;background:var(--search-bg);color:var(--search-text);outline:none;transition:all .3s;font-family:inherit}
.header-search input::placeholder{color:var(--search-placeholder)}
.header-search input:focus{border-color:var(--accent);box-shadow:0 0 0 4px var(--accent-glow)}
.header-search .search-icon{position:absolute;left:14px;top:50%;transform:translateY(-50%);color:var(--search-placeholder);font-size:15px;pointer-events:none;transition:color .3s}
.header-search input:focus ~ .search-icon{color:var(--accent)}
.header-toggle{display:none;background:none;border:none;color:var(--header-toggle-color);font-size:22px;cursor:pointer;padding:6px 10px;margin-right:10px;border-radius:8px;transition:all .2s}
.header-toggle:hover{color:var(--header-text);background:var(--header-toggle-hover)}

/* Sidebar */
.sidebar{position:fixed;top:var(--header-height);left:0;bottom:0;width:var(--sidebar-width);background:var(--sidebar-bg);color:var(--sidebar-text);overflow-y:auto;z-index:900;transition:transform .3s cubic-bezier(.4,0,.2,1),background .3s;border-right:1px solid var(--sidebar-border);padding:10px 0}
.sidebar::-webkit-scrollbar{width:4px}
.sidebar::-webkit-scrollbar-track{background:transparent}
.sidebar::-webkit-scrollbar-thumb{background:var(--border);border-radius:3px}
.sidebar-section-title{padding:14px 24px 12px;font-size:11px;font-weight:600;text-transform:uppercase;letter-spacing:1.4px;color:var(--accent);cursor:pointer;display:flex;justify-content:space-between;align-items:center;user-select:none;transition:color .2s;animation:aosSidebarIn .5s ease backwards;opacity:.85}
.sidebar-section-title:hover{color:var(--accent-hover);opacity:1}
.sidebar-section-title .arrow{font-size:8px;transition:transform .25s;opacity:.5}
.sidebar-section-title .arrow.open{transform:rotate(90deg);opacity:1}
.sidebar-links{list-style:none;overflow:hidden;max-height:0;transition:max-height .4s ease}
.sidebar-links.open{max-height:3000px}
.sidebar-links li a{display:block;padding:9px 24px 9px 28px;font-size:13px;font-weight:450;color:var(--text-dim);transition:all .2s;border-left:2px solid transparent;margin:1px 0;animation:aosSidebarIn .5s ease backwards;line-height:1.45}
.sidebar-links li a:hover{color:var(--accent);background:var(--sidebar-hover-bg);border-left-color:var(--accent);text-decoration:none;padding-left:30px;font-weight:500}
.sidebar-links li a.active{color:var(--accent);background:var(--sidebar-active-bg);border-left-color:var(--accent);font-weight:600;padding-left:30px}
@keyframes aosSidebarIn{from{opacity:0;transform:translateX(-12px)}to{opacity:1;transform:translateX(0)}}

/* Main content */
.main{margin-left:var(--sidebar-width);padding:36px 32px;padding-top:calc(var(--header-height) + 36px);min-height:100vh;display:flex;justify-content:center}
.main-inner{width:100%;max-width:860px;margin:0 auto}
.main-inner .loading{display:flex;align-items:center;justify-content:center;min-height:50vh;color:var(--text-light);font-size:15px}
.main-inner .error-box{padding:40px;text-align:center;color:var(--error)}
.main-inner .error-box small{color:var(--text-dim)}

.section{margin-bottom:56px}
.section-header{margin-bottom:32px;padding-bottom:16px;border-bottom:2px solid var(--accent);position:relative}
.section-header::after{content:"";position:absolute;bottom:-2px;left:0;width:40px;height:2px;background:var(--accent-hover);border-radius:1px}
.section-header h1{font-size:26px;color:var(--accent);font-weight:700;margin-bottom:6px;letter-spacing:-.3px}
.card{background:var(--card-bg);border-radius:var(--radius);padding:28px 32px;margin-bottom:22px;border:1px solid var(--border);box-shadow:0 1px 2px rgba(0,0,0,.02),0 2px 8px rgba(0,0,0,.03);transition:box-shadow .25s,border-color .25s,background .3s}
.card:hover{box-shadow:0 2px 4px rgba(0,0,0,.03),0 4px 16px rgba(0,0,0,.05);border-color:var(--accent-glow)}
.card h2{font-size:17px;color:var(--accent);margin-bottom:12px;padding-bottom:10px;border-bottom:1px solid var(--border-light);font-weight:700;letter-spacing:-.2px}
.card h3{font-size:14.5px;color:var(--accent);margin-bottom:8px;margin-top:20px;font-weight:700}
.card h4{font-size:13.5px;color:var(--text-dim);margin-bottom:6px;margin-top:16px;font-weight:600}
.card p,.card li{margin-bottom:7px;color:var(--text)}
.card ol,.card ul{padding-left:22px}
.card li{margin-bottom:5px}

.tag{display:inline-block;padding:3px 10px;border-radius:12px;font-size:10.5px;font-weight:600;letter-spacing:.3px}
.tag-tip{background:var(--success-light);color:#065f46}
.tag-warning{background:var(--warning-light);color:#92400e}
.tag-important{background:var(--error-light);color:#991b1b}
.tag-info{background:var(--accent-light);color:var(--accent)}

.screenshot-placeholder{background:var(--screenshot-bg);border:1.5px dashed var(--accent);border-radius:var(--radius);padding:44px 20px;text-align:center;color:var(--screenshot-text);margin:20px 0;font-size:14px;transition:border-color .2s,background .3s}
.screenshot-placeholder:hover{border-color:var(--accent-hover)}
.screenshot-placeholder .label{display:block;font-size:12px;color:var(--screenshot-label);margin-top:6px;font-weight:400}

.steps-list{counter-reset:step;list-style:none;padding:0;margin:14px 0}
.steps-list li{counter-increment:step;padding:8px 0 8px 38px;position:relative;margin-bottom:4px;color:var(--text)}
.steps-list li::before{content:counter(step);position:absolute;left:0;top:9px;width:24px;height:24px;border-radius:50%;background:var(--accent);color:#fff;font-size:11.5px;font-weight:700;display:flex;align-items:center;justify-content:center;box-shadow:0 2px 4px var(--accent-glow)}

.command{background:var(--command-bg);color:var(--command-text);padding:11px 18px;border-radius:var(--radius-sm);font-family:'JetBrains Mono',monospace;font-size:12.5px;margin:10px 0;overflow-x:auto;border:1px solid var(--border);border-left:3px solid var(--accent);transition:background .3s,color .3s,border-color .3s}

.key{display:inline-block;background:var(--key-bg);border:1.5px solid var(--key-border);border-radius:4px;padding:1px 7px;font-size:12px;font-family:'JetBrains Mono',monospace;font-weight:500;color:var(--key-text);box-shadow:0 1px 0 rgba(0,0,0,.04);transition:background .3s,color .3s,border-color .3s}

.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:16px}
.grid-3{display:grid;grid-template-columns:1fr 1fr 1fr;gap:16px}
.grid-4{display:grid;grid-template-columns:1fr 1fr 1fr 1fr;gap:16px}

.plan-card{border:1.5px solid var(--border);border-radius:var(--radius);padding:24px;text-align:center;transition:all .3s;background:var(--card-bg);position:relative;overflow:hidden}
.plan-card::before{content:"";position:absolute;top:0;left:0;right:0;height:3px;background:var(--border);transition:all .3s}
.plan-card:hover{border-color:var(--accent);box-shadow:0 4px 20px var(--accent-glow);transform:translateY(-2px)}
.plan-card:hover::before{background:var(--accent)}
.plan-card.featured{border:2px solid var(--accent);background:var(--plan-featured-bg)}
.plan-card.featured::before{background:var(--accent)}
.plan-card h3{font-size:15px;color:var(--text);margin-bottom:4px;font-weight:700}
.plan-card .price{font-size:28px;font-weight:800;color:var(--accent);margin:8px 0;letter-spacing:-.5px}
.plan-card .price small{font-size:12px;font-weight:400;color:var(--text-light)}
.plan-card ul{list-style:none;padding:0;text-align:left;margin:12px 0}
.plan-card ul li{padding:4px 0;font-size:13px;color:var(--text-dim)}
.plan-card ul li::before{content:"✓";color:var(--success);font-weight:700;margin-right:8px}

.search-results{position:absolute;top:calc(100% + 6px);left:0;right:0;background:var(--search-results-bg);border-radius:var(--radius);box-shadow:0 12px 40px var(--search-results-shadow);max-height:320px;overflow-y:auto;display:none;z-index:999;border:1px solid var(--search-border)}
.search-results.open{display:block}
.search-results a{display:block;padding:11px 18px;color:var(--search-results-text);border-bottom:1px solid var(--search-results-border);font-size:13px;transition:all .15s}
.search-results a small{color:var(--text-light)}
.search-results a:last-child{border-bottom:none}
.search-results a:hover{background:var(--search-results-hover);text-decoration:none;color:var(--accent)}
.search-results a .match{font-weight:700;color:var(--accent);background:var(--accent-glow);padding:0 3px;border-radius:2px}

.scroll-top{position:fixed;bottom:22px;right:22px;width:42px;height:42px;border-radius:50%;background:var(--accent);color:#fff;border:none;cursor:pointer;font-size:15px;display:flex;align-items:center;justify-content:center;opacity:0;transition:all .25s;z-index:500;box-shadow:0 4px 14px rgba(50,145,255,.3)}

/* Lightbox */
.lightbox-overlay{position:fixed;top:0;left:0;right:0;bottom:0;background:rgba(0,0,0,.7);backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);display:flex;align-items:center;justify-content:center;z-index:9999;opacity:0;pointer-events:none;transition:opacity .3s ease;padding:32px}
.lightbox-overlay.open{opacity:1;pointer-events:auto}

/* Zoom container para imagens */
.img-zoom{position:relative;display:block;max-width:100%;margin:16px 0;cursor:zoom-in;border-radius:var(--radius);overflow:hidden;line-height:0}
.img-zoom img{transition:transform .35s ease;cursor:zoom-in;margin:0!important}
.img-zoom:hover img{transform:scale(1.02)}
.img-zoom .img-zoom-icon{position:absolute;top:12px;right:12px;background:rgba(0,0,0,.5);backdrop-filter:blur(4px);-webkit-backdrop-filter:blur(4px);color:#fff;width:34px;height:34px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:14px;opacity:0;transition:opacity .25s ease;z-index:2;pointer-events:none}
.img-zoom:hover .img-zoom-icon{opacity:1}
.lightbox-image{max-width:100%;max-height:100%;border-radius:var(--radius);box-shadow:0 20px 60px rgba(0,0,0,.5);object-fit:contain;transform:scale(.9);transition:transform .3s ease;cursor:zoom-out}
.lightbox-overlay.open .lightbox-image{transform:scale(1)}
body.dark .lightbox-overlay{background:rgba(0,0,0,.85)}
.scroll-top:hover{background:var(--accent-hover);transform:scale(1.08)}
.scroll-top.visible{opacity:1}

.sub-section{margin-bottom:22px}

/* AOS — Animation On Scroll
   A duração por omissão faltava: sem ela o transition-duration é 0s e os
   elementos apareciam de repente, sem chegar a animar. As classes
   .aos-duration-* continuam a poder sobrepor-se caso a caso. */
.aos{opacity:0;transition-property:opacity,transform;transition-timing-function:cubic-bezier(.25,.46,.45,.94);transition-duration:.6s;will-change:opacity,transform}
.aos.aos-visible{opacity:1;transform:none;will-change:auto}
.aos-fade-up{transform:translateY(28px)}
.aos-fade-down{transform:translateY(-24px)}
.aos-fade-left{transform:translateX(-32px)}
.aos-fade-right{transform:translateX(28px)}
.aos-scale{transform:scale(.94)}
.aos-duration-400{transition-duration:.4s}
.aos-duration-600{transition-duration:.6s}
.aos-duration-800{transition-duration:.8s}
.aos-duration-1000{transition-duration:1s}

/* Texto corrido move-se menos do que os blocos: a 40px o parágrafo saltava
   à vista e tornava a leitura desconfortável ao percorrer a página. */
p.aos-fade-up,ul.aos-fade-up,ol.aos-fade-up,h2.aos-fade-up,h3.aos-fade-up,h4.aos-fade-up{transform:translateY(14px)}

.section.aos-loaded{animation:aosSectionIn .5s cubic-bezier(.25,.46,.45,.94)}
@keyframes aosSectionIn{from{opacity:0;transform:translateY(12px)}to{opacity:1;transform:translateY(0)}}

/* Quem pede menos movimento no sistema operativo não leva nenhum. */
@media(prefers-reduced-motion:reduce){
  .aos{transition:none!important;opacity:1!important;transform:none!important;will-change:auto}
  .section{animation:none!important}
  html{scroll-behavior:auto}
}

.troubleshoot-box{background:var(--troubleshoot-bg);border:1px solid var(--troubleshoot-border);border-radius:var(--radius);padding:14px 18px;margin:16px 0;transition:background .3s}
.troubleshoot-box h4{color:var(--troubleshoot-h);margin:0 0 6px 0;font-size:13.5px;font-weight:700}
.troubleshoot-box p,.troubleshoot-box li{color:var(--troubleshoot-text);font-size:13px}
.troubleshoot-box ol{padding-left:18px;margin:6px 0}

@media(max-width:900px){
  .sidebar{transform:translateX(-100%)}
  .sidebar.open{transform:translateX(0);box-shadow:4px 0 24px rgba(0,0,0,.1)}
  .main{margin-left:0;padding:20px 16px;padding-top:calc(var(--header-height) + 20px)}
  .header-toggle{display:block}
  .grid-2,.grid-3,.grid-4{grid-template-columns:1fr}
  .header-search{max-width:180px}
}
@media(max-width:600px){
  .header-logo{font-size:17px}
  .main{padding:14px;padding-top:calc(var(--header-height) + 14px)}
  .card{padding:18px}
  .section-header h1{font-size:20px}
  .card h2{font-size:16px}
}
@media print{
  .sidebar,.header,.scroll-top,.theme-toggle{display:none}
  .main{margin-left:0;padding:0}
  .card{box-shadow:none;border:1px solid #ddd;break-inside:avoid;background:#fff!important;color:#222!important}
}