/* ICore Specifications — Constitutional Computing */
*{margin:0;padding:0;box-sizing:border-box}
:root{--bg:#0a0a0f;--bg2:#12121a;--bg3:#1a1a25;--bd:#2a2a3a;--tx:#e0e0e0;--dm:#888899;--ac:#00bfa5;--ac2:#6c5ce7;--gn:#00e676;--yl:#fdcb6e;--rd:#e17055;--mono:'SF Mono','Cascadia Code','Consolas',monospace;--sans:-apple-system,'Segoe UI','Helvetica Neue',Arial,sans-serif}
body{background:var(--bg);color:var(--tx);font-family:var(--sans);line-height:1.7}
a{color:var(--ac);text-decoration:none}a:hover{text-decoration:underline}

/* Header */
header{background:var(--bg2);border-bottom:1px solid var(--bd);padding:3rem 2rem}
.hdr-inner{max-width:1200px;margin:0 auto;display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:2rem}
header h1{font-size:2rem;font-weight:800;color:var(--ac);font-family:var(--mono)}
header h1 span{color:var(--dm);font-weight:400}
.subtitle{color:var(--dm);margin-top:.5rem;font-size:.95rem}
.hdr-stats{display:flex;gap:2rem}
.stat{text-align:center}
.stat .val{font-size:1.5rem;font-weight:700;font-family:var(--mono);color:var(--ac)}
.stat .lbl{font-size:.7rem;color:var(--dm);text-transform:uppercase;letter-spacing:.05em}

/* Main */
main{max-width:1200px;margin:0 auto;padding:2rem}
section{margin-bottom:4rem}
section h2{font-size:1.4rem;font-weight:700;color:var(--ac);margin-bottom:.5rem;font-family:var(--mono)}
.section-desc{color:var(--dm);margin-bottom:2rem;font-size:.9rem}

/* Derivation Graph */
.graph{background:var(--bg2);border:1px solid var(--bd);border-radius:12px;padding:2rem;overflow-x:auto}
.graph-line{display:flex;flex-direction:column;align-items:center;gap:.3rem}
.node{padding:.6rem 1.5rem;border-radius:8px;font-family:var(--mono);font-size:.8rem;font-weight:600;text-align:center;min-width:200px;transition:all .2s}
.node:hover{transform:scale(1.02);box-shadow:0 4px 20px rgba(0,191,165,.15)}
.node small{font-weight:400;opacity:.7;display:block;font-size:.7rem}
.node.pre{background:rgba(136,136,153,.15);color:var(--dm);border:1px solid var(--bd)}
.node.l0{background:linear-gradient(135deg,#00bfa5,#00897b);color:#000}
.node.l2{background:rgba(0,191,165,.12);border:1px solid rgba(0,191,165,.3)}
.node.l3{background:rgba(108,92,231,.12);border:1px solid rgba(108,92,231,.3)}
.node.l4{background:rgba(108,92,231,.08);border:1px solid rgba(108,92,231,.2)}
.node.l5{background:rgba(255,109,0,.1);border:1px solid rgba(255,109,0,.2)}
.node.l6{background:rgba(233,30,99,.1);border:1px solid rgba(233,30,99,.2)}
.arrow{color:var(--dm);font-size:1rem;line-height:1}
.boundary{background:var(--ac2);color:#fff;padding:.4rem 1.5rem;border-radius:4px;font-family:var(--mono);font-size:.75rem;font-weight:600;letter-spacing:.1em}
.branch{display:flex;gap:1rem;flex-wrap:wrap;justify-content:center}

/* Spec Grid */
.spec-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(320px,1fr));gap:1rem}
.spec-card{background:var(--bg2);border:1px solid var(--bd);border-radius:12px;padding:1.5rem;text-decoration:none;color:var(--tx);transition:all .25s;display:block}
.spec-card:hover{border-color:var(--ac);transform:translateY(-3px);box-shadow:0 8px 30px rgba(0,191,165,.1);text-decoration:none}
.spec-layer{font-family:var(--mono);font-size:.7rem;font-weight:600;color:var(--ac2);margin-bottom:.3rem}
.spec-card h3{font-size:1.1rem;font-weight:700;margin-bottom:.4rem;font-family:var(--mono)}
.spec-desc{font-size:.85rem;color:var(--dm);line-height:1.5;margin-bottom:.8rem}
.spec-meta{display:flex;gap:1rem;font-size:.75rem;color:var(--dm);font-family:var(--mono)}
.spec-meta .frozen{color:var(--ac)}

/* Principles */
.principle-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:1.2rem}
.principle{background:var(--bg2);border:1px solid var(--bd);border-radius:12px;padding:1.5rem;text-align:center;transition:all .25s}
.principle:hover{border-color:var(--ac);transform:translateY(-2px)}
.principle .pi{font-size:2rem;margin-bottom:.8rem}
.principle h3{font-size:.95rem;font-weight:600;margin-bottom:.4rem;font-family:var(--mono)}
.principle p{font-size:.82rem;color:var(--dm);line-height:1.5}

/* Footer */
footer{border-top:1px solid var(--bd);padding:2rem;text-align:center;margin-top:2rem}
footer p{color:var(--dm);font-size:.8rem;margin-bottom:.3rem}
footer .links{display:flex;gap:1rem;justify-content:center;margin-top:.8rem}
footer .links a{color:var(--dm);font-size:.75rem;font-family:var(--mono)}.footer .links a:hover{color:var(--ac)}

/* ═══ SPEC PAGE ═══ */
.spec-page{display:flex;min-height:100vh}
.sidebar{width:260px;background:var(--bg2);border-right:1px solid var(--bd);position:fixed;top:0;bottom:0;overflow-y:auto;padding:1rem 0;z-index:50}
.sidebar-header{padding:0 1.2rem .8rem;border-bottom:1px solid var(--bd);margin-bottom:.5rem}
.sidebar-logo{font-size:1rem;font-weight:700;color:var(--ac);font-family:var(--mono)}
.sidebar-nav .nav-group{margin-bottom:1rem}
.nav-group-title{font-size:.65rem;text-transform:uppercase;letter-spacing:.08em;color:var(--dm);padding:.4rem 1.2rem;font-weight:600}
.sidebar-nav a{display:block;padding:.3rem 1.2rem .3rem 1.6rem;font-size:.8rem;color:var(--dm);border-left:2px solid transparent;transition:all .15s}
.sidebar-nav a:hover,.sidebar-nav a.active{color:var(--ac);background:rgba(0,191,165,.05);border-left-color:var(--ac);text-decoration:none}
.spec-info{padding:.5rem 1.2rem;font-size:.78rem;color:var(--dm);line-height:1.8}
.spec-info strong{color:var(--tx)}

.main-content{margin-left:260px;flex:1;padding:2rem 3rem;max-width:900px}
.spec-header{margin-bottom:2rem}
.back-link{font-size:.8rem;color:var(--dm);display:inline-block;margin-bottom:1rem}
.back-link:hover{color:var(--ac)}
.spec-header h1{font-size:1.8rem;font-weight:800;color:var(--ac);font-family:var(--mono);margin-bottom:.5rem}
.spec-subtitle{font-size:.95rem;color:var(--dm);font-style:italic;margin-bottom:1rem}
.spec-badges{display:flex;gap:.5rem;flex-wrap:wrap}
.badge{font-size:.7rem;padding:4px 10px;border-radius:12px;background:rgba(0,191,165,.1);color:var(--ac);font-family:var(--mono);border:1px solid rgba(0,191,165,.2)}
.badge.frozen{background:rgba(0,230,118,.1);color:var(--gn);border-color:rgba(0,230,118,.2)}

/* Spec Content */
.spec-content{font-size:.9rem;line-height:1.8}
.spec-content h1{font-size:1.6rem;font-weight:700;color:var(--ac);margin:2rem 0 .8rem;padding-top:1rem;border-top:1px solid var(--bd);font-family:var(--mono)}
.spec-content h1:first-child{border-top:none;margin-top:0}
.spec-content h2{font-size:1.3rem;font-weight:700;color:var(--ac);margin:2rem 0 .6rem;padding-top:1rem;border-top:1px solid var(--bd)}
.spec-content h3{font-size:1.05rem;font-weight:600;color:var(--tx);margin:1.5rem 0 .4rem}
.spec-content h4{font-size:.95rem;font-weight:600;color:var(--ac2);margin:1.2rem 0 .3rem}
.spec-content p{margin-bottom:.8rem}
.spec-content strong{color:var(--ac2)}
.spec-content ul,.spec-content ol{margin:.5rem 0 1rem 1.5rem}
.spec-content li{margin-bottom:.2rem}
.spec-content code{background:var(--bg3);padding:2px 6px;border-radius:4px;font-family:var(--mono);font-size:.82rem;color:var(--ac2)}
.spec-content pre{background:var(--bg3);border:1px solid var(--bd);border-radius:8px;padding:1rem;margin:1rem 0;overflow-x:auto;font-family:var(--mono);font-size:.8rem;line-height:1.6}
.spec-content pre code{background:none;padding:0;color:inherit}
.spec-content table{width:100%;border-collapse:collapse;margin:1rem 0;font-size:.82rem}
.spec-content th{background:var(--bg3);color:var(--ac);text-align:left;padding:.5rem .8rem;border:1px solid var(--bd);font-family:var(--mono)}
.spec-content td{padding:.5rem .8rem;border:1px solid var(--bd)}
.spec-content tr:hover{background:rgba(0,191,165,.03)}
.spec-content blockquote{border-left:3px solid var(--ac2);padding:.8rem 1rem;margin:1rem 0;background:rgba(108,92,231,.05);border-radius:0 6px 6px 0;font-style:italic}
.spec-content hr{border:none;border-top:1px solid var(--bd);margin:2rem 0}

.sidebar-toggle{display:none;position:fixed;top:.8rem;left:1rem;z-index:60;background:var(--bg2);border:1px solid var(--bd);color:var(--tx);width:36px;height:36px;border-radius:6px;cursor:pointer;font-size:1.1rem}

@media(max-width:768px){
  .hdr-inner{flex-direction:column;text-align:center}
  .hdr-stats{justify-content:center}
  .spec-grid{grid-template-columns:1fr}
  .branch{flex-direction:column;align-items:center}
  .node{min-width:160px;font-size:.7rem}
  .sidebar{transform:translateX(-100%);transition:transform .3s}
  .sidebar.open{transform:translateX(0)}
  .main-content{margin-left:0;padding:2rem 1rem}
  .sidebar-toggle{display:flex;align-items:center;justify-content:center}
}