/* ═══════════════════════════════════════════════════════════════════════════
   PLP IoT Platform Docs — Global Styles
   Used by ALL sections (run-book, architecture, etc.)
   ═══════════════════════════════════════════════════════════════════════════ */

*{margin:0;padding:0;box-sizing:border-box}
:root{
  --bg:#0f172a;--card:#1e293b;--cardH:#334155;--border:#334155;
  --accent:#3b82f6;--green:#10b981;--orange:#f59e0b;--purple:#a78bfa;
  --pink:#f472b6;--cyan:#22d3ee;--red:#ef4444;--yellow:#eab308;
  --text:#f1f5f9;--muted:#94a3b8;--dim:#64748b
}
body{background:var(--bg);color:var(--text);font-family:'Inter',system-ui,-apple-system,sans-serif;padding:20px;min-height:100vh}
.container{max-width:1100px;margin:0 auto}

/* ── Navigation ─────────────────────────────────────────────────────────── */
.nav-bar{display:flex;align-items:center;gap:6px;flex-wrap:wrap;margin-bottom:16px;background:var(--card);padding:10px 14px;border-radius:12px;border:1px solid var(--border)}
.nav-brand{font-size:12px;font-weight:700;color:var(--text);margin-right:6px;white-space:nowrap;text-decoration:none}
.nav-brand:hover{color:var(--accent)}
.nav-sep{color:var(--dim);font-size:14px;margin:0 4px;user-select:none}
.nav-link{font-size:10.5px;font-weight:600;padding:4px 11px;border-radius:8px;text-decoration:none;color:var(--muted);transition:all .2s;border:1px solid transparent}
.nav-link:hover{background:var(--cardH);color:var(--text)}
.nav-link.active{background:var(--accent);color:#fff;border-color:var(--accent)}

/* ── Header ─────────────────────────────────────────────────────────────── */
.header{display:flex;align-items:center;gap:12px;margin-bottom:18px}
.logo{background:linear-gradient(135deg,var(--accent),var(--purple));border-radius:10px;width:40px;height:40px;display:flex;align-items:center;justify-content:center;font-size:20px}
h1{color:var(--text);font-size:18px;font-weight:700}
.subtitle{color:var(--muted);font-size:12px}

/* ── Buttons & Badges ───────────────────────────────────────────────────── */
.btn{background:var(--cardH);border:none;color:var(--muted);cursor:pointer;padding:6px 14px;border-radius:8px;font-size:11px;font-weight:600;transition:all .2s}
.btn:hover{background:var(--accent);color:white}
.badges{display:flex;gap:5px;flex-wrap:wrap;margin-bottom:12px}
.badge{font-size:9px;padding:3px 9px;border-radius:7px;font-weight:600}

/* ── Cards ──────────────────────────────────────────────────────────────── */
.card{background:var(--card);border-radius:12px;border:1px solid var(--border);padding:18px;margin-bottom:14px}

/* ── Deliverables / Clickable list items ────────────────────────────────── */
.deliverable{display:flex;align-items:center;gap:10px;padding:9px 14px;border-radius:8px;margin-bottom:3px;cursor:default;transition:all .2s;border:1px solid transparent}
.deliverable.clickable{cursor:pointer}
.deliverable.clickable:hover{background:rgba(16,185,129,.08);border-color:var(--green)}
.deliverable .icon{font-size:16px}
.deliverable .label{flex:1;font-size:12.5px}
.explore-tag{font-size:9.5px;color:var(--green);background:rgba(16,185,129,.12);padding:2px 9px;border-radius:10px;font-weight:600}

/* ── SVG nodes ──────────────────────────────────────────────────────────── */
.node{cursor:pointer}
.node rect{transition:all .2s}
.node:hover rect:first-child{filter:brightness(1.2)}

/* ── Detail panel ───────────────────────────────────────────────────────── */
.detail{background:var(--card);border-radius:12px;padding:18px;margin-top:14px;animation:fadeIn .2s}
@keyframes fadeIn{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}
.detail-header{display:flex;justify-content:space-between;align-items:flex-start}
.detail-title{display:flex;align-items:center;gap:10px}
.detail-title span:first-child{font-size:22px}
.detail-title h3{font-size:14px;color:var(--text)}
.detail-title p{font-size:10px;font-weight:600}
.detail-desc{color:var(--muted);font-size:11px;margin:5px 0 10px}
.tabs{display:flex;gap:5px;margin-bottom:10px}
.tab{padding:4px 10px;border-radius:7px;border:none;cursor:pointer;font-size:10px;font-weight:600;background:var(--cardH);color:var(--muted);transition:all .2s}
.tab.active{color:var(--accent);background:rgba(59,130,246,.15)}
.detail-list{max-height:280px;overflow-y:auto}
.detail-item{display:flex;gap:7px;padding:4px 0;border-bottom:1px solid rgba(51,65,85,.25)}
.detail-num{min-width:20px;height:20px;border-radius:5px;display:flex;align-items:center;justify-content:center;font-size:9px;font-weight:700;flex-shrink:0}
.detail-text{font-size:11px;line-height:1.5}
.close-btn{background:var(--cardH);border:none;color:var(--muted);cursor:pointer;font-size:12px;border-radius:6px;padding:3px 9px}

/* ── Hint ───────────────────────────────────────────────────────────────── */
.hint{margin-top:12px;background:var(--card);border-radius:10px;border:1px solid var(--border);padding:12px;display:flex;align-items:center;gap:8px;font-size:11px;color:var(--muted)}

/* ── Layout utilities ───────────────────────────────────────────────────── */
.grid2{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.mono{background:var(--bg);border-radius:8px;padding:12px;font-family:'Courier New',monospace;font-size:10px;line-height:1.6;overflow-x:auto}
.info-box{margin-top:12px;padding:10px;border-radius:8px;font-size:10.5px;line-height:1.5}
.estimate-row{display:flex;justify-content:space-between;padding:5px 10px;border-radius:6px;font-size:10px}
.tenant-btn{flex:1;padding:9px 12px;border-radius:10px;cursor:pointer;text-align:left;border:2px solid transparent;transition:all .2s}
.tenant-btn.active{border-color:rgba(59,130,246,.4)}
.entity-chain{display:flex;align-items:center;gap:0;flex-wrap:wrap;justify-content:center;margin:12px 0}
.entity-box{padding:10px 14px;border-radius:10px;text-align:center;min-width:110px}
.entity-box h4{font-size:11px;margin-bottom:2px}
.entity-box p{font-size:9px;opacity:.7}
.entity-arrow{font-size:18px;color:var(--dim);padding:0 2px}

/* ── Landing page ───────────────────────────────────────────────────────── */
.landing-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:14px;margin-top:16px}
.section-card{background:var(--card);border-radius:14px;border:1px solid var(--border);padding:22px;text-decoration:none;transition:all .2s;display:block}
.section-card:hover{border-color:var(--accent);transform:translateY(-2px);box-shadow:0 8px 24px rgba(0,0,0,.3)}
.section-card h3{font-size:14px;color:var(--text);margin-bottom:6px}
.section-card p{font-size:11px;color:var(--muted);line-height:1.5}
.section-card .section-icon{font-size:28px;margin-bottom:10px;display:block}
.section-card .section-badge{font-size:9px;display:inline-block;padding:2px 8px;border-radius:6px;font-weight:600;margin-top:10px}