/* ===== MOELLE_EPINIERE.CSS ===== */
@import url('https://fonts.googleapis.com/css2?family=Syncopate:wght@400;700&family=Lora:ital,wght@0,400;0,500;1,400;1,500&family=Share+Tech+Mono&display=swap');

:root {
  --void:      #04020e;
  --deep:      #080418;
  --panel:     #0e0826;
  --card:      #130b30;
  --violet:    #7c3aed;
  --purple:    #a855f7;
  --lilac:     #c4b5fd;
  --glow:      rgba(124,58,237,.18);
  --glow-s:    rgba(124,58,237,.07);
  --silver:    #94a3b8;
  --text:      #ede9fe;
  --muted:     #4c3d72;
  --border:    rgba(124,58,237,.2);
  --warm:      #f59e0b;
  --safe:      #34d399;
  --danger:    #f87171;
  --font-h:    'Syncopate', sans-serif;
  --font-b:    'Lora', serif;
  --font-m:    'Share Tech Mono', monospace;
}

*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:var(--font-b);background:var(--void);color:var(--text);line-height:1.78;overflow-x:hidden}

/* Neural net bg */
body::before{
  content:'';position:fixed;inset:0;
  background:
    radial-gradient(ellipse 60% 80% at 15% 50%, rgba(124,58,237,.06) 0%, transparent 65%),
    repeating-linear-gradient(90deg,transparent,transparent 49px,rgba(124,58,237,.03) 49px,rgba(124,58,237,.03) 50px),
    repeating-linear-gradient(0deg,transparent,transparent 49px,rgba(124,58,237,.03) 49px,rgba(124,58,237,.03) 50px);
  pointer-events:none;z-index:0;
}

#progress-bar{position:fixed;top:0;left:0;height:2px;background:linear-gradient(90deg,var(--violet),var(--purple),var(--lilac));width:0%;z-index:200;box-shadow:0 0 12px var(--violet);transition:width .1s}

/* NAV */
nav{position:fixed;top:0;left:0;right:0;z-index:100;height:62px;display:flex;align-items:center;justify-content:space-between;padding:0 3rem;background:rgba(4,2,14,.88);backdrop-filter:blur(20px);border-bottom:1px solid var(--border)}
.nav-brand{display:flex;align-items:center;gap:.8rem;text-decoration:none}
.nav-spine{width:8px;height:32px;display:flex;flex-direction:column;justify-content:space-between}
.nav-spine span{display:block;height:3px;border-radius:2px;background:var(--violet)}
.nav-spine span:nth-child(2){background:var(--purple);width:70%}
.nav-spine span:nth-child(3){background:var(--lilac);width:40%}
.nav-title{font-family:var(--font-h);font-size:.75rem;color:var(--text);letter-spacing:.12em;text-transform:uppercase}
.nav-links{display:flex;gap:2rem;list-style:none}
.nav-links a{font-family:var(--font-m);font-size:.72rem;color:var(--muted);text-decoration:none;letter-spacing:.08em;transition:color .2s}
.nav-links a:hover{color:var(--purple)}
.nav-tag{font-family:var(--font-m);font-size:.68rem;color:var(--purple);background:var(--glow);border:1px solid var(--border);padding:.28rem .8rem;border-radius:100px}

/* HERO */
.hero{position:relative;z-index:1;min-height:100vh;display:grid;grid-template-columns:1fr 1fr;align-items:center;gap:3rem;padding:8rem 3rem 4rem;overflow:hidden}
.hero-tag{font-family:var(--font-m);font-size:.7rem;color:var(--purple);letter-spacing:.22em;text-transform:uppercase;margin-bottom:1.2rem;display:flex;align-items:center;gap:.7rem}
.hero-tag::before{content:'';width:24px;height:1px;background:var(--purple)}
.hero h1{font-family:var(--font-h);font-size:clamp(2rem,4.5vw,4rem);font-weight:700;line-height:1.1;letter-spacing:.06em;text-transform:uppercase;color:var(--text);margin-bottom:1.2rem}
.hero h1 em{display:block;color:var(--purple);font-style:italic;font-family:var(--font-b);font-size:.7em;letter-spacing:.02em;text-transform:none}
.hero-desc{font-size:.95rem;color:var(--muted);max-width:470px;line-height:1.88;margin-bottom:2.5rem}
.hero-kpis{display:flex;gap:2.5rem;flex-wrap:wrap}
.kpi{display:flex;flex-direction:column}
.kpi-n{font-family:var(--font-h);font-size:2rem;font-weight:700;color:var(--purple);line-height:1}
.kpi-l{font-family:var(--font-m);font-size:.64rem;color:var(--muted);letter-spacing:.1em;text-transform:uppercase;margin-top:.3rem}

/* SPINE VISUAL */
.spine-wrap{display:flex;align-items:center;justify-content:center}

/* BAND */
.band{background:var(--panel);border-top:1px solid var(--border);border-bottom:1px solid var(--border);padding:3.5rem 3rem;position:relative;z-index:1}
.band-inner{max-width:1160px;margin:0 auto;display:grid;grid-template-columns:repeat(4,1fr);gap:2rem;text-align:center}
.bn{font-family:var(--font-h);font-size:2.4rem;font-weight:700;color:var(--purple);line-height:1}
.bl{font-family:var(--font-m);font-size:.66rem;color:var(--muted);letter-spacing:.1em;margin-top:.4rem}

/* SEC */
.sec{position:relative;z-index:1;max-width:1160px;margin:0 auto;padding:5rem 3rem}
.shead{display:flex;align-items:center;gap:1rem;margin-bottom:3rem}
.snum{font-family:var(--font-m);font-size:.7rem;color:var(--purple);letter-spacing:.18em;flex-shrink:0}
.stitle{font-family:var(--font-h);font-size:clamp(1.3rem,2.3vw,2rem);font-weight:700;letter-spacing:.08em;text-transform:uppercase}
.sline{flex:1;height:1px;background:var(--border);margin-left:.8rem}

/* VERTEBRAE CARDS */
.vrt-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:1.5px;background:var(--border);border:1px solid var(--border)}
.vrt-card{background:var(--card);padding:1.8rem;transition:background .25s;position:relative;overflow:hidden}
.vrt-card::after{content:'';position:absolute;top:0;left:0;bottom:0;width:2px;background:var(--violet);transform:scaleY(0);transform-origin:top;transition:transform .4s}
.vrt-card:hover::after{transform:scaleY(1)}
.vrt-card:hover{background:var(--panel)}
.vrt-level{font-family:var(--font-h);font-size:1.4rem;font-weight:700;color:var(--purple);line-height:1;margin-bottom:.5rem;letter-spacing:.08em}
.vrt-name{font-family:var(--font-m);font-size:.68rem;color:var(--lilac);letter-spacing:.12em;text-transform:uppercase;margin-bottom:.7rem}
.vrt-desc{font-size:.84rem;color:var(--muted);line-height:1.72}
.vrt-count{margin-top:.8rem;font-family:var(--font-h);font-size:.8rem;color:var(--violet)}

/* TABLE */
.table-wrap{overflow-x:auto;border:1px solid var(--border);border-radius:4px}
table{width:100%;border-collapse:collapse;font-size:.86rem}
thead{background:var(--panel)}
th{font-family:var(--font-m);font-size:.66rem;letter-spacing:.14em;text-transform:uppercase;color:var(--purple);padding:.9rem 1.2rem;text-align:left;border-bottom:1px solid var(--border)}
td{padding:.9rem 1.2rem;border-bottom:1px solid rgba(124,58,237,.07);color:var(--text);vertical-align:top}
tr:hover td{background:var(--glow-s)}
tr:last-child td{border-bottom:none}
.tag{font-family:var(--font-m);font-size:.63rem;padding:.18rem .55rem;border-radius:2px;text-transform:uppercase;letter-spacing:.06em}
.tag-m{background:rgba(168,85,247,.12);color:var(--lilac);border:1px solid rgba(168,85,247,.25)}
.tag-s{background:rgba(248,113,113,.1);color:#fca5a5;border:1px solid rgba(248,113,113,.22)}
.tag-ok{background:rgba(52,211,153,.1);color:#6ee7b7;border:1px solid rgba(52,211,153,.22)}

/* NEURAL PATH STEPS */
.path-steps{display:flex;flex-direction:column;gap:0;border:1px solid var(--border)}
.path-step{background:var(--card);padding:1.4rem 1.8rem;display:grid;grid-template-columns:52px 1fr;gap:1.2rem;align-items:start;border-bottom:1px solid rgba(124,58,237,.08);transition:background .2s;opacity:0;transform:translateX(-14px);transition:opacity .5s,transform .5s,background .2s}
.path-step.visible{opacity:1;transform:translateX(0)}
.path-step:last-child{border-bottom:none}
.path-step:hover{background:var(--panel)}
.ps-n{width:38px;height:38px;border-radius:50%;border:2px solid var(--violet);display:grid;place-items:center;font-family:var(--font-m);font-size:.75rem;color:var(--purple);box-shadow:0 0 8px var(--glow)}
.ps-title{font-family:var(--font-h);font-size:.9rem;font-weight:700;letter-spacing:.06em;text-transform:uppercase;margin-bottom:.35rem}
.ps-desc{font-size:.84rem;color:var(--muted);line-height:1.72}

/* ALERT */
.alert-info{background:var(--glow);border:1px solid var(--border);border-left:3px solid var(--violet);padding:1.2rem 1.5rem;font-size:.87rem;color:var(--text);line-height:1.75;margin-top:1rem}
.alert-danger{background:rgba(248,113,113,.07);border:1px solid rgba(248,113,113,.2);border-left:3px solid var(--danger);padding:1.2rem 1.5rem;font-size:.87rem;color:#fca5a5;line-height:1.75;margin-top:1rem}

/* FI */
.fi{opacity:0;transform:translateY(16px);transition:opacity .6s,transform .6s}
.fi.visible{opacity:1;transform:translateY(0)}

footer{border-top:1px solid var(--border);padding:2rem 3rem;display:flex;justify-content:space-between;flex-wrap:wrap;gap:1rem;z-index:1;position:relative}
.ft{font-family:var(--font-m);font-size:.7rem;color:var(--muted)}

@media(max-width:900px){
  .hero{grid-template-columns:1fr;padding:7rem 1.2rem 3rem}
  .spine-wrap{display:none}
  .band-inner{grid-template-columns:repeat(2,1fr)}
  nav{padding:0 1.2rem}
  .nav-links{display:none}
  .sec{padding:3rem 1.2rem}
}