:root{
  --bg:#f4f1ec;--panel:#fffdf9;--ink:#28231f;--muted:#766e67;--line:#ded8d1;
  --accent:#3e5a4a;--accent2:#e8eee8;--danger:#9b3e3e;--shadow:0 12px 36px rgba(47,38,30,.06)
}
*{box-sizing:border-box}body{margin:0;font-family:Inter,ui-sans-serif,system-ui,-apple-system,"Segoe UI",sans-serif;background:var(--bg);color:var(--ink)}
button,input,select,textarea{font:inherit}.shell{display:grid;grid-template-columns:250px 1fr;min-height:100vh}
.sidebar{background:#25241f;color:#f6f2ec;padding:22px 16px;display:flex;flex-direction:column;position:sticky;top:0;height:100vh}
.logo{display:flex;gap:12px;align-items:center;padding:5px 8px 24px}.logo>span,.brand-mark{display:grid;place-items:center;width:42px;height:42px;border:1px solid #8e948f;border-radius:13px;font-weight:800;letter-spacing:.06em}.logo b,.logo small{display:block}.logo small{color:#aaa59e;margin-top:3px}
nav{display:grid;gap:6px}nav button{background:transparent;border:0;color:#ccc6bf;padding:11px 12px;text-align:left;border-radius:10px;cursor:pointer}nav button:hover,nav button.active{background:#3a3932;color:white}
.sidebar-bottom{margin-top:auto;display:flex;align-items:center;justify-content:space-between;padding:12px 8px}.pill,.tag{font-size:12px;border-radius:999px;padding:6px 9px;background:var(--accent2);color:var(--accent)}.sidebar .pill{background:#343a36;color:#cbe0d0}.link-btn{border:0;background:transparent;color:#aaa59e;cursor:pointer}
.main{padding:28px;max-width:1500px;width:100%}.topbar{display:flex;align-items:center;justify-content:space-between;margin-bottom:24px}.topbar h2{margin:2px 0 0}.eyebrow{font-size:11px;letter-spacing:.14em;color:var(--muted);font-weight:700}
.page{display:none}.page.active{display:block}.card{background:var(--panel);border:1px solid var(--line);border-radius:18px;padding:22px;box-shadow:var(--shadow);margin-bottom:18px}
.hero{display:grid;grid-template-columns:1fr 180px;align-items:center;gap:28px;background:linear-gradient(135deg,#fffdf9,#eef1e9)}.hero h1{font-size:38px;line-height:1.06;max-width:720px;margin:14px 0}.hero p{max-width:750px;color:var(--muted)}.hero-metric{text-align:center;border-left:1px solid var(--line)}.hero-metric span{font-size:52px;font-weight:800;display:block}.hero-metric small{color:var(--muted)}
.metric-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px}.metric{display:flex;flex-direction:column}.metric b{font-size:28px}.metric span{color:var(--muted)}
.section-head{display:flex;justify-content:space-between;align-items:center;gap:12px;margin-bottom:18px}.section-head h3{margin:0}.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:18px}.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px}
label{display:grid;gap:6px;font-size:13px;color:var(--muted);margin-bottom:12px}input,select,textarea{width:100%;border:1px solid var(--line);border-radius:10px;background:white;padding:10px 11px;color:var(--ink);outline:none}input:focus,select:focus,textarea:focus{border-color:#87988b;box-shadow:0 0 0 3px #e9eee9}
.btn{border:1px solid var(--line);background:white;color:var(--ink);padding:10px 14px;border-radius:10px;cursor:pointer;font-weight:650}.btn:hover{transform:translateY(-1px)}.btn.primary{background:var(--accent);color:white;border-color:var(--accent)}.row{display:flex;gap:10px;align-items:center;flex-wrap:wrap}.muted{color:var(--muted);font-size:13px}.error{color:var(--danger);min-height:1.2em}
.ai-output{white-space:pre-wrap;line-height:1.6;background:#f8f5ef;border:1px solid var(--line);padding:15px;border-radius:12px;min-height:160px;overflow:auto}.visual-box{display:grid;place-items:center;min-height:320px;background:#ebe7e0;border-radius:15px;margin:14px 0;overflow:hidden}.visual-box img{width:100%;max-height:520px;object-fit:contain}.visual-box div{color:var(--muted)}
.chat-card{min-height:75vh;display:grid;grid-template-rows:auto 1fr auto}.chat-log{display:flex;flex-direction:column;gap:12px;overflow:auto;padding:10px 0 20px}.msg{max-width:78%;padding:12px 14px;border-radius:14px;white-space:pre-wrap;line-height:1.5}.msg.ai{background:#eef1e9;border:1px solid #dfe6dc}.msg.user{background:#33332e;color:white;margin-left:auto}.chat-input{display:grid;grid-template-columns:1fr auto;gap:10px;align-items:end}
.table-wrap{overflow:auto}table{width:100%;border-collapse:collapse}th,td{text-align:left;padding:11px;border-bottom:1px solid var(--line);font-size:13px}th{color:var(--muted);font-weight:650}.status{display:inline-block;padding:4px 8px;border-radius:999px;background:#eee;font-size:11px}.status.Approved{background:#dcebdd;color:#31583b}
.costing-controls{display:grid;grid-template-columns:repeat(3,1fr);gap:15px;align-items:end}.summary-mini{padding:12px 16px;border:1px solid var(--line);border-radius:12px}.summary-mini small,.summary-mini b{display:block}.summary-mini b{font-size:22px;margin-top:4px}.cost-summary{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin-top:20px}.cost-summary>div{padding:14px;border:1px solid var(--line);border-radius:12px}.cost-summary small,.cost-summary b{display:block}.cost-summary b{font-size:20px;margin-top:5px}.check-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin:20px 0}.check-grid label{display:flex;align-items:center;gap:9px;padding:10px;border:1px solid var(--line);border-radius:10px;color:var(--ink);margin:0}.check-grid input{width:auto}
.mono{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;line-height:1.55}.login-body{display:grid;place-items:center;min-height:100vh;padding:22px;background:radial-gradient(circle at top left,#e8ede7,#f3f0ea 45%,#e9e2d8)}.login-card{width:min(430px,100%);background:var(--panel);border:1px solid var(--line);border-radius:24px;padding:34px;box-shadow:var(--shadow)}.login-card h1{margin:10px 0 4px}.login-card .btn{width:100%}.brand-mark{background:#2f4136;color:white;border:0;margin-bottom:22px}
@media(max-width:900px){.shell{grid-template-columns:1fr}.sidebar{position:relative;height:auto}.sidebar nav{grid-template-columns:repeat(2,1fr)}.sidebar-bottom{display:none}.main{padding:16px}.grid-2,.metric-grid,.form-grid,.costing-controls,.cost-summary,.check-grid,.hero{grid-template-columns:1fr}.hero-metric{border-left:0;border-top:1px solid var(--line);padding-top:18px}.topbar{align-items:flex-end}.hero h1{font-size:30px}}
.btn.danger{border-color:#d8b7b7;color:#8a3131;background:#fff8f8}.switch-row{display:flex;align-items:center;gap:9px;color:var(--ink);padding:10px 0}.switch-row input{width:auto}.info-stack{display:grid;gap:14px}.info-stack>div{padding:14px;border:1px solid var(--line);border-radius:12px}.info-stack p{margin:6px 0 0;color:var(--muted);line-height:1.5}