/* Sec-Llama Learn — shared styles for the writeup library. Matches the main site tokens. */
:root{
  --bg:#08090f; --bg-card:#0f1018; --bg-elevated:#161825;
  --accent:#c0392b; --accent-hover:#e74c3c; --accent-dim:rgba(192,57,43,0.12);
  --text:#f0f0f5; --text-muted:#8892a4; --border:#1c1f2e; --success:#27ae60;
  --code-bg:#0b0c14;
}
*{margin:0;padding:0;box-sizing:border-box}
html,body{overflow-x:hidden}
body{background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,'Segoe UI',system-ui,sans-serif;line-height:1.7}
a{color:var(--accent);text-decoration:none}
a:hover{color:var(--accent-hover)}
p{color:var(--text-muted)}
img{max-width:100%;height:auto}

/* Nav (mirrors main site) */
nav{display:flex;align-items:center;justify-content:space-between;padding:1rem 1.5rem;border-bottom:1px solid var(--border);position:sticky;top:0;background:rgba(8,9,15,0.9);backdrop-filter:blur(10px);z-index:50}
.nav-logo-wrap{display:flex;align-items:center;gap:.55rem}
.nav-logo-img{height:28px;width:auto;display:block}
.nav-logo-text{font-weight:800;font-size:1.05rem;color:var(--text);letter-spacing:-.3px}
.nav-logo-text span{color:var(--accent)}
.nav-links{display:flex;gap:1.6rem;list-style:none;align-items:center}
.nav-links a{color:var(--text-muted);font-size:.88rem;transition:color .2s}
.nav-links a:hover{color:var(--text)}
.nav-cta{background:var(--accent);color:#fff!important;padding:.5rem 1rem;border-radius:8px;font-weight:600}
.nav-cta:hover{background:var(--accent-hover)!important}

/* Layout */
.wrap{max-width:820px;margin:0 auto;padding:0 1.5rem}
.wrap-wide{max-width:1080px;margin:0 auto;padding:0 1.5rem}
.section{padding:3rem 0}

/* Breadcrumb */
.crumb{font-size:.82rem;color:var(--text-muted);padding:1.4rem 0 .2rem}
.crumb a{color:var(--text-muted)}
.crumb a:hover{color:var(--accent)}

/* Badges */
.badges{display:flex;flex-wrap:wrap;gap:.5rem;margin:.8rem 0 1.4rem}
.badge{font-size:.72rem;font-weight:700;letter-spacing:.04em;text-transform:uppercase;padding:.3rem .7rem;border-radius:100px;border:1px solid var(--border);color:var(--text-muted);background:var(--bg-elevated)}
.badge.plat{color:#e08f2e;border-color:rgba(224,143,46,.3);background:rgba(224,143,46,.1)}
.badge.diff-apprentice{color:var(--success);border-color:rgba(39,174,96,.3);background:rgba(39,174,96,.1)}
.badge.diff-practitioner{color:#e0a92e;border-color:rgba(224,169,46,.3);background:rgba(224,169,46,.1)}
.badge.diff-expert{color:var(--accent);border-color:rgba(192,57,43,.3);background:var(--accent-dim)}
.badge.vuln{color:#4a9fe0;border-color:rgba(74,159,224,.3);background:rgba(74,159,224,.1)}

/* Article */
article h1{font-size:2rem;line-height:1.2;letter-spacing:-.5px;margin-bottom:.4rem}
article h2{font-size:1.35rem;margin:2.2rem 0 .8rem;letter-spacing:-.3px}
article h3{font-size:1.05rem;margin:1.6rem 0 .5rem;color:var(--text)}
article p{margin-bottom:1rem;font-size:1.02rem}
article ul,article ol{color:var(--text-muted);margin:0 0 1rem 1.3rem}
article li{margin-bottom:.5rem}
article strong{color:var(--text)}
.lead{font-size:1.12rem;color:var(--text)}
hr{border:none;border-top:1px solid var(--border);margin:2.4rem 0}
.labref{font-size:.92rem;color:var(--text-muted);margin:.3rem 0 1.6rem;padding:.6rem .9rem;background:var(--bg-card);border:1px solid var(--border);border-left:3px solid #e08f2e;border-radius:6px}
.labref a{color:#e08f2e;font-weight:600}

/* Code */
code{font-family:'SF Mono',Menlo,Consolas,monospace;font-size:.9em;background:var(--code-bg);border:1px solid var(--border);border-radius:5px;padding:.12rem .4rem;color:#e6b8b2}
pre{background:var(--code-bg);border:1px solid var(--border);border-left:3px solid var(--accent);border-radius:8px;padding:1rem 1.1rem;overflow-x:auto;margin:1rem 0}
pre code{background:none;border:none;padding:0;color:#d6d9e6;font-size:.88rem;line-height:1.6}
.callout{background:var(--bg-card);border:1px solid var(--border);border-radius:10px;padding:1.1rem 1.3rem;margin:1.4rem 0}
.callout .k{font-size:.72rem;font-weight:700;text-transform:uppercase;letter-spacing:.08em;color:var(--accent);display:block;margin-bottom:.3rem}
figure{margin:1.4rem 0}
figure img{border:1px solid var(--border);border-radius:8px;display:block}
figcaption{font-size:.82rem;color:var(--text-muted);margin-top:.5rem;text-align:center}

/* CTA box */
.cta{background:linear-gradient(160deg,var(--bg-elevated),var(--bg-card));border:1px solid rgba(192,57,43,.35);border-radius:14px;padding:1.8rem;margin:2.6rem 0 1rem;text-align:center}
.cta h3{font-size:1.25rem;color:var(--text);margin-bottom:.5rem}
.cta p{margin-bottom:1.2rem}
.btn{display:inline-block;background:var(--accent);color:#fff;font-weight:700;padding:.8rem 1.7rem;border-radius:9px;transition:.2s}
.btn:hover{background:var(--accent-hover);color:#fff;transform:translateY(-1px);box-shadow:0 8px 24px rgba(192,57,43,.28)}

/* Library index */
.hero-l{text-align:center;padding:3.4rem 0 2rem}
.hero-l h1{font-size:2.5rem;letter-spacing:-.7px;line-height:1.15;margin-bottom:.8rem}
.hero-l h1 .accent{color:var(--accent)}
.hero-l .sub{font-size:1.12rem;color:var(--text-muted);max-width:620px;margin:0 auto}
.chips{display:flex;flex-wrap:wrap;gap:.6rem;justify-content:center;margin:1.6rem 0 .5rem}
.chip{font-size:.82rem;color:var(--text-muted);border:1px solid var(--border);background:var(--bg-elevated);border-radius:100px;padding:.4rem 1rem}
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:1.1rem;margin:1.5rem 0}
.card{display:block;background:var(--bg-card);border:1px solid var(--border);border-radius:12px;padding:1.3rem;transition:.2s}
.card:hover{border-color:var(--accent);transform:translateY(-2px)}
.card .ttl{color:var(--text);font-weight:700;font-size:1.05rem;margin:.5rem 0 .4rem;line-height:1.3}
.card .desc{color:var(--text-muted);font-size:.9rem}
.card.soon{opacity:.55;pointer-events:none;border-style:dashed}
.note{text-align:center;color:var(--text-muted);font-size:.9rem;margin:1rem 0}

/* Footer */
footer{border-top:1px solid var(--border);padding:2.2rem 1.5rem;text-align:center;color:var(--text-muted);font-size:.85rem;margin-top:2rem}
footer a{color:var(--text-muted)}
footer a:hover{color:var(--accent)}

@media(max-width:640px){
  .nav-links{display:none}
  .hero-l h1{font-size:1.9rem}
  article h1{font-size:1.6rem}
}