/* The Practice Room: shared article design system (Riffloop blog).
   Each article links this file and sets its category color with:
   <style>:root{--cat:var(--support)}</style>  (support / accent / solo / check / accent-blue)
   Tokens extracted from riffloop.app; see brand-spec.md. */
:root{
  --bg:#0a0d14; --bg-2:#0d111a; --panel:#161b27;
  --text:#f8f5ef; --text-dim:#97a3b3; --text-dimmer:#5b6577;
  --border:#ffffff14; --border-strong:#ffffff24;
  --accent:#6f3eee; --accent-purple:#9d2bf0; --accent-blue:#3a4fe6;
  --accent-glow:#6f3eee73; --accent-soft:#6f3eee26;
  --gradient:linear-gradient(135deg,#3a4fe6 0%,#9d2bf0 100%);
  --solo:#f5c842; --support:#22d3ee; --check:#5ee29d; --mute:#f24c4c;
  --radius-sm:8px; --radius:12px; --radius-lg:18px;
  --shadow-glow:0 30px 90px -20px var(--accent-glow);
  --font-display:'Anton',-apple-system,BlinkMacSystemFont,sans-serif;
  --font-body:'Inter',-apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif;
  --font-hand:'Caveat',cursive;
  --mono:'SF Mono',ui-monospace,Menlo,monospace;
  --cat:var(--accent);
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{background:var(--bg);color:var(--text);font-family:var(--font-body);font-size:18px;line-height:1.7;
  -webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;overflow-x:hidden;position:relative}
body::before{content:"";position:fixed;z-index:0;width:680px;height:680px;top:-260px;left:50%;transform:translateX(-50%);
  border-radius:50%;filter:blur(140px);pointer-events:none;
  background:radial-gradient(circle,color-mix(in srgb,var(--cat) 15%,transparent),transparent 70%)}
.wrap{max-width:1180px;margin:0 auto;padding:0 24px;position:relative;z-index:1}
a{color:inherit;text-decoration:none}
svg{display:block}

/* Top nav is injected by /site-nav.js (shared riffloop.app nav) — no header styles here. */

.progress{position:fixed;top:0;left:0;height:3px;width:0;z-index:60;background:var(--gradient);transition:width .1s linear}

article{max-width:760px;margin:0 auto;padding:0 24px}
.crumb{display:inline-flex;align-items:center;gap:8px;margin:44px 0 22px;font-size:13px;color:var(--text-dim);font-family:var(--mono);letter-spacing:.04em}
.crumb a:hover{color:var(--text)}
.tag{--c:var(--cat);display:inline-flex;align-items:center;gap:7px;font-size:12px;font-weight:700;text-transform:uppercase;letter-spacing:.12em;color:var(--c)}
.tag::before{content:"";width:7px;height:7px;border-radius:50%;background:var(--c);box-shadow:0 0 10px var(--c)}
h1.title{font-family:var(--font-display);font-size:clamp(38px,6.4vw,68px);line-height:.96;letter-spacing:.5px;text-transform:uppercase;margin:16px 0 20px}
.dek{font-size:21px;color:var(--text-dim);line-height:1.5;max-width:60ch}
.postmeta{display:flex;align-items:center;gap:12px;margin:28px 0 0;padding:22px 0;border-top:1px solid var(--border);border-bottom:1px solid var(--border);font-size:14px;color:var(--text-dim);flex-wrap:wrap}
.avatar{width:40px;height:40px;border-radius:50%;background:var(--gradient);display:grid;place-items:center;font-weight:800;font-size:14px;color:#fff}
.postmeta b{color:var(--text);font-weight:600}
.postmeta .sep{color:var(--text-dimmer)}
.postmeta .share{margin-left:auto;display:flex;gap:8px}
.postmeta .share button{width:36px;height:36px;border-radius:50%;border:1px solid var(--border-strong);background:#ffffff08;color:var(--text-dim);cursor:pointer;display:grid;place-items:center;transition:.16s}
.postmeta .share button:hover{color:var(--text);border-color:var(--cat);background:color-mix(in srgb,var(--cat) 16%,transparent)}

.hero-art{margin:34px 0 8px;border:1px solid var(--border);border-radius:var(--radius-lg);overflow:hidden;
  background:radial-gradient(at 60% 20%,color-mix(in srgb,var(--cat) 24%,transparent),transparent 60%),
  linear-gradient(160deg,color-mix(in srgb,var(--cat) 16%,#0d111a),#0a0d14);padding:40px 34px;position:relative}
.wave{display:flex;align-items:flex-end;gap:5px;height:140px;color:var(--accent)}
.wave i{flex:1;background:currentColor;border-radius:3px;opacity:.9;animation:pulse 2.8s ease-in-out infinite}
.wave i.hi{color:var(--cat);opacity:1}
@keyframes pulse{0%,100%{transform:scaleY(1)}50%{transform:scaleY(.5)}}
.abmark{display:flex;justify-content:space-between;margin-top:14px;font-family:var(--mono);font-size:12px;letter-spacing:.1em;color:var(--text-dim)}
.abmark b{color:var(--cat)}
.abmark .mid{color:var(--cat)}
.hero-note{position:absolute;right:26px;top:22px;font-family:var(--font-hand);font-size:24px;color:var(--cat);transform:rotate(-5deg)}

.prose{padding:8px 0 20px;font-size:18px}
.prose p{margin:22px 0;color:#e7e6df}
.prose p:first-of-type{font-size:20px}
.prose p:first-of-type::first-letter{font-family:var(--font-display);font-size:64px;float:left;line-height:.72;padding:6px 12px 0 0;color:var(--accent-purple)}
.prose h2{font-family:var(--font-display);font-size:30px;text-transform:uppercase;letter-spacing:.4px;margin:46px 0 6px;line-height:1.05}
.prose h2 .num{color:var(--cat);margin-right:12px}
.prose h3{font-size:20px;font-weight:700;margin:30px 0 4px;letter-spacing:-0.01em}
.prose strong{color:var(--text);font-weight:700}
.prose em{color:#f0efe8}
.prose a.ln{color:var(--support);border-bottom:1px solid color-mix(in srgb,var(--support) 45%,transparent)}
.prose a.ln:hover{border-color:var(--support)}
.prose ul{margin:18px 0;padding-left:0;list-style:none}
.prose li{position:relative;padding-left:30px;margin:12px 0;color:#e7e6df}
.prose li::before{content:"";position:absolute;left:4px;top:11px;width:9px;height:9px;border-radius:2px;background:var(--cat);transform:rotate(45deg)}

.pull{margin:40px 0;padding:8px 0 8px 28px;border-left:3px solid;border-image:var(--gradient) 1;
  font-family:var(--font-display);font-size:clamp(26px,4vw,34px);line-height:1.12;text-transform:uppercase;letter-spacing:.3px;color:var(--text)}

.callout{margin:40px 0;border:1px solid var(--border-strong);border-radius:var(--radius-lg);overflow:hidden;
  background:radial-gradient(at 10% 10%,color-mix(in srgb,var(--cat) 16%,transparent),transparent 55%),var(--panel)}
.callout .top{padding:24px 26px 20px;display:flex;gap:16px;align-items:flex-start}
.callout .ic{flex:none;width:44px;height:44px;border-radius:12px;background:var(--gradient);display:grid;place-items:center;box-shadow:var(--shadow-glow)}
.callout .ic svg{width:22px;height:22px}
.callout .th{font-family:var(--font-hand);font-size:22px;color:var(--support);line-height:1;margin-bottom:2px}
.callout h4{font-size:19px;font-weight:700;letter-spacing:-0.01em}
.callout p{margin:6px 0 0;color:var(--text-dim);font-size:15.5px}
.callout .steps{border-top:1px solid var(--border);display:grid;grid-template-columns:repeat(4,1fr)}
.callout .steps div{padding:16px 18px;border-right:1px solid var(--border);font-size:13px;color:var(--text-dim)}
.callout .steps div:last-child{border-right:0}
.callout .steps b{display:block;font-family:var(--mono);font-size:12px;color:var(--cat);margin-bottom:4px;letter-spacing:.06em}
.callout .act{padding:18px 26px 22px}
.callout .act a{display:inline-flex;align-items:center;gap:9px;padding:12px 22px;border-radius:999px;background:var(--gradient);color:#fff;font-weight:600;font-size:15px;box-shadow:0 12px 30px -14px var(--accent-glow);transition:.16s}
.callout .act a:hover{filter:brightness(1.08)}

.tip{margin:34px 0;padding:18px 22px;border-radius:var(--radius);background:color-mix(in srgb,var(--cat) 8%,transparent);border:1px solid color-mix(in srgb,var(--cat) 26%,transparent);color:#eef1ee;font-size:16px}
.tip b{color:var(--cat);font-family:var(--mono);font-size:12px;letter-spacing:.1em;text-transform:uppercase;display:block;margin-bottom:5px}

.authorcard{display:flex;gap:16px;align-items:flex-start;margin:48px 0 10px;padding:26px;border:1px solid var(--border);border-radius:var(--radius-lg);background:var(--panel)}
.authorcard .avatar{width:52px;height:52px;font-size:17px}
.authorcard h5{font-size:16px;font-weight:700}
.authorcard span{font-size:13.5px;color:var(--text-dim)}
.authorcard p{margin-top:8px;font-size:15px;color:var(--text-dim)}

.related{margin:70px 0 0;border-top:1px solid var(--border);padding-top:34px}
.related h3{font-family:var(--font-display);font-size:24px;text-transform:uppercase;letter-spacing:.4px;margin-bottom:20px}
.rgrid{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
a.rcard{border:1px solid var(--border);border-radius:var(--radius);padding:20px;background:var(--panel);transition:.2s;display:block}
a.rcard:hover{transform:translateY(-4px);border-color:var(--border-strong)}
a.rcard .tag{font-size:11px;margin-bottom:10px}
a.rcard h4{font-size:16.5px;font-weight:700;line-height:1.3;letter-spacing:-0.01em}
a.rcard .m{margin-top:12px;font-family:var(--mono);font-size:12px;color:var(--text-dimmer)}

/* ---------- site footer (matches riffloop.app) ---------- */
.site-footer{border-top:1px solid var(--border);margin-top:70px;position:relative;z-index:1}
.site-footer .sf-top{max-width:1180px;margin:0 auto;padding:40px 24px;display:flex;flex-wrap:wrap;gap:18px 30px;align-items:center;justify-content:space-between}
.site-footer .sf-brand{display:flex;align-items:center;gap:10px;color:var(--text-dim);font-size:14px}
.site-footer .sf-brand img{height:24px;width:auto;display:block}
.site-footer .sf-links{display:flex;flex-wrap:wrap;align-items:center;gap:12px 22px;font-size:14px;color:var(--text-dim)}
.site-footer .sf-links a{transition:color .16s}
.site-footer .sf-links a:hover{color:var(--text)}
.site-footer .sf-ico{display:inline-flex;align-items:center}
.site-footer .sf-ico svg{width:18px;height:18px}
.site-footer .sf-fine{border-top:1px solid #ffffff0d;padding:20px 24px;text-align:center;font-size:12.5px;color:var(--text-dimmer)}
.site-footer .sf-fine a:hover{color:var(--text-dim)}

@media(max-width:720px){
  .nav-links a:not(.cta){display:none}
  .callout .steps{grid-template-columns:repeat(2,1fr)}
  .callout .steps div:nth-child(2){border-right:0}
  .callout .steps div:nth-child(-n+2){border-bottom:1px solid var(--border)}
  .rgrid{grid-template-columns:1fr}
  body{font-size:17px}
}

/* GEO answer block — short direct answer near the top of each article */
.geo-answer{background:var(--panel);border:1px solid var(--border);border-left:3px solid var(--cat,var(--accent));border-radius:12px;padding:1.1rem 1.3rem;margin:1.6rem 0}
.geo-answer-eyebrow{font-size:.72rem;font-weight:700;letter-spacing:.12em;text-transform:uppercase;color:var(--text-dimmer);margin:0 0 .4rem}
.geo-answer h2{font-size:1.08rem;margin:0 0 .55rem}
.geo-answer p{margin:0;color:var(--text-dim)}
.geo-answer strong{color:var(--text)}