:root{
  --bg:#0a0a0f;
  --bg-2:#12121a;
  --ink:#e8e8f0;
  --ink-dim:#8a8aa0;
  --ink-mid:#b8b8c8;
  --accent:#ff2d95;
  --accent-2:#00f0ff;
  --accent-3:#ffcc00;
  --line:rgba(255,255,255,0.08);
  --line-hot:rgba(255,45,149,0.4);
}
*{box-sizing:border-box;margin:0;padding:0}
html,body{background:var(--bg);color:var(--ink);font-family:'Space Grotesk',system-ui,sans-serif;min-height:100vh;-webkit-font-smoothing:antialiased;scroll-behavior:smooth}
body{background-image:
  radial-gradient(ellipse at 20% 0%,rgba(255,45,149,0.12),transparent 50%),
  radial-gradient(ellipse at 80% 100%,rgba(0,240,255,0.08),transparent 50%),
  linear-gradient(to bottom,var(--bg),var(--bg-2));
  background-attachment:fixed}
.container{max-width:1200px;margin:0 auto;padding:32px 32px 64px}
.container.narrow{max-width:780px}

/* NAV */
.nav{display:flex;justify-content:space-between;align-items:center;padding:20px 0;border-bottom:1px solid var(--line);margin-bottom:48px;flex-wrap:wrap;gap:16px}
.nav-brand{font-family:'JetBrains Mono',monospace;font-size:12px;color:var(--ink-dim);letter-spacing:0.25em;text-transform:uppercase;text-decoration:none}
.nav-brand:hover{color:var(--accent)}
.nav-brand .dot{display:inline-block;width:8px;height:8px;background:var(--accent);border-radius:50%;margin-right:8px;vertical-align:middle;box-shadow:0 0 12px var(--accent);animation:pulse 2s infinite}
.nav-links{display:flex;gap:24px;flex-wrap:wrap}
.nav-links a{font-family:'JetBrains Mono',monospace;font-size:11px;color:var(--ink-dim);letter-spacing:0.2em;text-transform:uppercase;text-decoration:none;transition:color 0.2s}
.nav-links a:hover,.nav-links a.active{color:var(--accent-2)}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:0.4}}

/* HEADERS */
header.page-head{margin-bottom:56px;padding-bottom:32px;border-bottom:1px solid var(--line)}
.tag{font-family:'JetBrains Mono',monospace;font-size:11px;color:var(--ink-dim);letter-spacing:0.3em;text-transform:uppercase;margin-bottom:16px}
h1{font-size:clamp(36px,6vw,64px);font-weight:800;line-height:1;letter-spacing:-0.03em;margin-bottom:16px}
h1 .glitch{background:linear-gradient(90deg,var(--accent),var(--accent-2));-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
h1 .glitch-alt{background:linear-gradient(90deg,var(--accent-2),var(--accent-3));-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.tagline{font-size:18px;color:var(--ink-dim);max-width:640px;line-height:1.5}
.tagline em{color:var(--accent-3);font-style:normal;font-family:'JetBrains Mono',monospace;font-size:14px}

/* ARTICLE */
article h2{font-size:28px;font-weight:700;letter-spacing:-0.02em;margin:56px 0 20px;color:var(--ink);padding-bottom:12px;border-bottom:1px solid var(--line);font-family:'JetBrains Mono',monospace}
article h2 .num{color:var(--accent);font-weight:400;margin-right:12px}
article h3{font-size:20px;font-weight:600;margin:40px 0 16px;color:var(--accent-2);letter-spacing:-0.01em}
article p{font-size:17px;line-height:1.7;color:var(--ink-mid);margin-bottom:18px}
article p:first-of-type::first-line{color:var(--ink)}
article strong{color:var(--ink);font-weight:600}
article em{color:var(--accent-3);font-style:italic;font-family:'JetBrains Mono',monospace;font-size:0.94em}
article blockquote{border-left:3px solid var(--accent);padding:16px 24px;margin:28px 0;background:rgba(255,45,149,0.04);font-size:17px;color:var(--ink);font-style:italic}
article blockquote cite{display:block;margin-top:12px;font-size:13px;color:var(--ink-dim);font-style:normal;font-family:'JetBrains Mono',monospace}
article ul{margin:18px 0 24px 24px;color:var(--ink-mid)}
article ul li{margin-bottom:10px;line-height:1.6;font-size:16px}
article ul li strong{color:var(--accent-2)}
article .callout{background:rgba(0,240,255,0.05);border:1px solid rgba(0,240,255,0.2);padding:24px;margin:32px 0;border-radius:4px}
article .callout .callout-label{font-family:'JetBrains Mono',monospace;font-size:11px;color:var(--accent-2);letter-spacing:0.2em;text-transform:uppercase;margin-bottom:12px}
article details{margin:24px 0;border:1px solid var(--line);border-radius:4px;background:rgba(255,255,255,0.02)}
article details summary{padding:16px 20px;cursor:pointer;font-family:'JetBrains Mono',monospace;font-size:12px;color:var(--accent-3);letter-spacing:0.15em;text-transform:uppercase;user-select:none}
article details summary:hover{color:var(--accent)}
article details[open] summary{border-bottom:1px solid var(--line)}
article details .deep-content{padding:20px}
article details .deep-content p{font-size:15px}

/* GPT CARDS (index) */
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(320px,1fr));gap:24px;margin-bottom:48px}
.card{background:rgba(255,255,255,0.02);border:1px solid var(--line);border-radius:4px;padding:32px;transition:all 0.25s ease;position:relative;overflow:hidden;text-decoration:none;color:inherit;display:flex;flex-direction:column;min-height:320px}
.card::before{content:'';position:absolute;top:0;left:0;right:0;height:2px;background:var(--card-accent,var(--accent));opacity:0.6;transition:opacity 0.25s}
.card:hover{border-color:var(--line-hot);background:rgba(255,255,255,0.04);transform:translateY(-2px)}
.card:hover::before{opacity:1;box-shadow:0 0 20px var(--card-accent,var(--accent))}
.card-tag{font-family:'JetBrains Mono',monospace;font-size:10px;letter-spacing:0.2em;color:var(--ink-dim);text-transform:uppercase;margin-bottom:16px}
.card-title{font-size:28px;font-weight:700;letter-spacing:-0.02em;margin-bottom:12px;font-family:'JetBrains Mono',monospace}
.card-sub{font-size:14px;color:var(--card-accent,var(--accent));margin-bottom:20px;font-weight:500}
.card-desc{font-size:15px;color:var(--ink-dim);line-height:1.6;flex:1;margin-bottom:24px}
.card-cta{font-family:'JetBrains Mono',monospace;font-size:12px;letter-spacing:0.15em;text-transform:uppercase;color:var(--ink);display:inline-flex;align-items:center;gap:8px;padding-top:16px;border-top:1px solid var(--line)}
.card-cta .arrow{transition:transform 0.2s}
.card:hover .card-cta .arrow{transform:translateX(4px);color:var(--card-accent,var(--accent))}
.c1{--card-accent:var(--accent)}
.c2{--card-accent:var(--accent-2)}
.c3{--card-accent:var(--accent-3)}

/* SECTION CARDS (topic links) */
.topics{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:20px;margin:48px 0}
.topic{background:rgba(255,255,255,0.02);border:1px solid var(--line);padding:24px;text-decoration:none;color:inherit;transition:all 0.25s;border-radius:4px}
.topic:hover{border-color:var(--line-hot);transform:translateY(-2px)}
.topic .t-tag{font-family:'JetBrains Mono',monospace;font-size:10px;color:var(--accent);letter-spacing:0.2em;text-transform:uppercase;margin-bottom:8px}
.topic h4{font-size:20px;font-weight:700;margin-bottom:8px;color:var(--ink)}
.topic p{font-size:14px;color:var(--ink-dim);line-height:1.5}

/* FOOTER */
footer{padding-top:32px;border-top:1px solid var(--line);display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:16px;font-family:'JetBrains Mono',monospace;font-size:11px;color:var(--ink-dim);letter-spacing:0.1em;text-transform:uppercase;margin-top:80px}
footer a{color:var(--ink-dim);text-decoration:none;transition:color 0.2s}
footer a:hover{color:var(--accent-2)}

@media (max-width:600px){
  .container{padding:20px 20px 48px}
  .card{min-height:auto}
  article p{font-size:16px}
  article h2{font-size:22px}
  .nav{flex-direction:column;align-items:flex-start}
}

/* MODAL */
.modal-backdrop{position:fixed;inset:0;background:rgba(5,5,10,0.85);backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);display:none;align-items:center;justify-content:center;z-index:1000;padding:20px;overflow-y:auto}
.modal-backdrop.open{display:flex;animation:fadeIn 0.2s ease}
@keyframes fadeIn{from{opacity:0}to{opacity:1}}
.modal{--modal-accent:var(--accent);background:var(--bg-2);border:1px solid var(--line);border-top:3px solid var(--modal-accent);border-radius:6px;max-width:680px;width:100%;padding:40px;position:relative;box-shadow:0 20px 80px rgba(0,0,0,0.6),0 0 40px rgba(255,45,149,0.1);animation:slideUp 0.3s ease;max-height:90vh;overflow-y:auto}
@keyframes slideUp{from{transform:translateY(20px);opacity:0}to{transform:translateY(0);opacity:1}}
.modal-close{position:absolute;top:16px;right:16px;background:transparent;border:1px solid var(--line);color:var(--ink-dim);width:36px;height:36px;border-radius:50%;cursor:pointer;font-size:16px;transition:all 0.2s;display:flex;align-items:center;justify-content:center}
.modal-close:hover{border-color:var(--modal-accent);color:var(--modal-accent);background:rgba(255,45,149,0.05)}
.modal-tag{font-family:'JetBrains Mono',monospace;font-size:11px;letter-spacing:0.25em;color:var(--ink-dim);text-transform:uppercase;margin-bottom:16px}
.modal-title{font-family:'JetBrains Mono',monospace;font-size:36px;font-weight:800;letter-spacing:-0.02em;color:var(--ink);margin-bottom:8px;line-height:1;padding:0;border:none}
.modal-sub{font-size:16px;color:var(--modal-accent);margin-bottom:28px;font-weight:500}
.modal-body p{font-size:16px;line-height:1.65;color:var(--ink-mid);margin-bottom:14px}
.modal-body p strong{color:var(--ink)}
.modal-body p em{color:var(--accent-3);font-style:normal;font-family:'JetBrains Mono',monospace;font-size:0.92em}
.modal-prompts{margin:32px 0;padding:20px;background:rgba(255,255,255,0.02);border:1px solid var(--line);border-radius:4px}
.prompts-label{font-family:'JetBrains Mono',monospace;font-size:11px;color:var(--modal-accent);letter-spacing:0.2em;text-transform:uppercase;margin-bottom:12px}
.modal-prompts ul{list-style:none;margin:0;padding:0}
.modal-prompts ul li{font-size:14px;color:var(--ink-mid);padding:10px 0;border-bottom:1px dashed var(--line);font-family:'JetBrains Mono',monospace;line-height:1.5}
.modal-prompts ul li:last-child{border-bottom:none}
.modal-prompts ul li::before{content:"\203A  ";color:var(--modal-accent);font-weight:700}
.modal-cta{display:block;background:var(--modal-accent);color:#0a0a0f;text-decoration:none;font-family:'JetBrains Mono',monospace;font-size:14px;font-weight:700;letter-spacing:0.15em;text-align:center;padding:18px;border-radius:4px;transition:all 0.2s;text-transform:uppercase}
.modal-cta:hover{transform:translateY(-2px);box-shadow:0 10px 30px rgba(255,45,149,0.3);filter:brightness(1.1)}
.modal-cta .arrow{transition:transform 0.2s;display:inline-block;margin-left:4px}
.modal-cta:hover .arrow{transform:translateX(4px)}
.modal-note{text-align:center;font-size:11px;color:var(--ink-dim);margin-top:12px;font-family:'JetBrains Mono',monospace;letter-spacing:0.1em}

/* Fix: cards agora são <button>, não <a> */
button.card{font-family:inherit;text-align:left;cursor:pointer;width:100%}
button.card:focus-visible{outline:2px solid var(--accent);outline-offset:2px}

@media (max-width:600px){
  .modal{padding:28px 20px}
  .modal-title{font-size:28px}
  .modal-close{top:10px;right:10px}
}