*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
:root{
  --bg:#f8fafc;--surface:#ffffff;--surface-alt:#f1f5f9;
  --text:#0f172a;--text-muted:#64748b;--text-light:#94a3b8;
  --primary:#6366f1;--primary-hover:#4f46e5;--primary-light:#eef2ff;
  --accent:#f59e0b;--accent-light:#fffbeb;
  --success:#10b981;--success-light:#ecfdf5;
  --danger:#ef4444;--danger-light:#fef2f2;
  --border:#e2e8f0;--border-focus:#6366f1;
  --radius:12px;--radius-sm:8px;
  --shadow:0 1px 3px rgba(0,0,0,.08),0 1px 2px rgba(0,0,0,.04);
  --shadow-md:0 4px 12px rgba(0,0,0,.1);
  --font:system-ui,-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,sans-serif;
  --max-width:1120px;
}
html{scroll-behavior:smooth}
body{font-family:var(--font);background:var(--bg);color:var(--text);line-height:1.6;-webkit-font-smoothing:antialiased}
.container{max-width:var(--max-width);margin:0 auto;padding:0 20px}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);border:0}

/* Header */
.site-header{background:var(--surface);border-bottom:1px solid var(--border);position:sticky;top:0;z-index:100}
.site-header .container{display:flex;align-items:center;justify-content:space-between;height:56px}
.logo{display:flex;align-items:center;gap:8px;font-weight:700;font-size:1.1rem;color:var(--text);text-decoration:none}
.nav{display:flex;gap:24px}
.nav a{color:var(--text-muted);text-decoration:none;font-size:.9rem;font-weight:500;transition:color .15s}
.nav a:hover{color:var(--primary)}

/* Buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;padding:10px 20px;border-radius:var(--radius-sm);font-size:.9rem;font-weight:600;cursor:pointer;border:2px solid transparent;transition:all .15s;text-decoration:none;line-height:1.4}
.btn-primary{background:var(--primary);color:#fff;border-color:var(--primary)}
.btn-primary:hover{background:var(--primary-hover);border-color:var(--primary-hover)}
.btn-ghost{background:transparent;color:var(--text-muted);border-color:var(--border)}
.btn-ghost:hover{border-color:var(--primary);color:var(--primary)}
.btn-danger{background:transparent;color:var(--danger);border-color:var(--danger)}
.btn-danger:hover{background:var(--danger);color:#fff}
.btn-sm{padding:6px 14px;font-size:.8rem}
.btn-full{width:100%}

/* Hero */
.hero{padding:60px 0 40px;text-align:center;background:linear-gradient(180deg,var(--primary-light) 0%,var(--bg) 100%)}
.hero h1{font-size:clamp(1.8rem,4vw,2.8rem);font-weight:800;line-height:1.2;margin-bottom:16px;color:var(--text)}
.hero-sub{font-size:1.1rem;color:var(--text-muted);max-width:560px;margin:0 auto 28px}
.hero-actions{display:flex;gap:12px;justify-content:center;flex-wrap:wrap}

/* Dashboard */
.dashboard-section{padding:24px 0}
.dashboard-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
.stat-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:20px;text-align:center}
.stat-number{display:block;font-size:2rem;font-weight:800;color:var(--primary)}
.stat-label{font-size:.8rem;color:var(--text-muted);text-transform:uppercase;letter-spacing:.05em}
.stat-low .stat-number{color:var(--danger)}
.stat-categories .stat-number{color:var(--accent)}
.stat-projects .stat-number{color:var(--success)}

/* Sections */
section{padding:48px 0}
.section-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:24px;flex-wrap:wrap;gap:12px}
.section-header h2{font-size:1.4rem;font-weight:700}
.section-actions{display:flex;gap:8px;flex-wrap:wrap}

/* Inventory */
.inventory-layout{display:grid;grid-template-columns:340px 1fr;gap:24px;align-items:start}
.add-form-card,.inventory-list-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:24px}
.add-form-card h3,.inventory-list-card h3{font-size:1.1rem;margin-bottom:16px}

/* Forms */
.form-row{margin-bottom:14px}
.form-row label{display:block;font-size:.8rem;font-weight:600;color:var(--text-muted);margin-bottom:4px;text-transform:uppercase;letter-spacing:.03em}
.form-row input,.form-row select{width:100%;padding:10px 12px;border:1px solid var(--border);border-radius:var(--radius-sm);font-size:.9rem;background:var(--surface);color:var(--text);transition:border-color .15s}
.form-row input:focus,.form-row select:focus{outline:none;border-color:var(--border-focus);box-shadow:0 0 0 3px rgba(99,102,241,.15)}
.form-row-split{display:grid;grid-template-columns:1fr 1fr;gap:12px}

/* Inventory List */
.list-controls{display:flex;gap:8px;margin-bottom:16px}
.list-controls select{padding:8px 12px;border:1px solid var(--border);border-radius:var(--radius-sm);font-size:.85rem;background:var(--surface);color:var(--text)}
.inventory-list{display:flex;flex-direction:column;gap:8px;max-height:600px;overflow-y:auto}
.inv-item{display:grid;grid-template-columns:1fr auto auto;gap:12px;align-items:center;padding:14px 16px;background:var(--surface-alt);border-radius:var(--radius-sm);border:1px solid var(--border)}
.inv-item.low-stock{border-color:var(--danger);background:var(--danger-light)}
.inv-item-info h4{font-size:.95rem;font-weight:600}
.inv-item-info p{font-size:.8rem;color:var(--text-muted)}
.inv-item-qty{text-align:right}
.inv-item-qty .qty-num{font-size:1.1rem;font-weight:700}
.inv-item-qty .qty-unit{font-size:.75rem;color:var(--text-muted)}
.inv-item-actions{display:flex;gap:4px}
.inv-item-actions button{padding:6px 10px;font-size:.75rem;border-radius:6px;border:1px solid var(--border);background:var(--surface);cursor:pointer;color:var(--text-muted);transition:all .15s}
.inv-item-actions button:hover{border-color:var(--primary);color:var(--primary)}
.inv-item-actions button.delete:hover{border-color:var(--danger);color:var(--danger)}
.category-tag{display:inline-block;padding:2px 8px;border-radius:99px;font-size:.7rem;font-weight:600;text-transform:uppercase;letter-spacing:.04em}
.cat-paint{background:#dbeafe;color:#1d4ed8}
.cat-brushes{background:#fce7f3;color:#be185d}
.cat-canvas{background:#fef3c7;color:#b45309}
.cat-paper{background:#d1fae5;color:#047857}
.cat-adhesives{background:#e0e7ff;color:#4338ca}
.cat-tools{background:#f3e8ff;color:#7c3aed}
.cat-yarn{background:#fee2e2;color:#b91c1c}
.cat-beads{background:#ccfbf1;color:#0f766e}
.cat-wood{background:#fed7aa;color:#c2410c}
.cat-fabric{background:#e9d5ff;color:#7e22ce}
.cat-other{background:#f1f5f9;color:#475569}
.low-badge{display:inline-block;padding:2px 8px;border-radius:99px;font-size:.7rem;font-weight:700;background:var(--danger);color:#fff;margin-left:6px}

/* Empty State */
.empty-state{text-align:center;padding:40px 20px;color:var(--text-muted)}
.empty-state svg{margin-bottom:12px;opacity:.5}

/* Planner */
.planner-section{background:var(--surface-alt)}
.planner-layout{display:grid;grid-template-columns:1fr 1fr;gap:24px;align-items:start}
.planner-form,.planner-results{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:24px}
.planner-intro{color:var(--text-muted);font-size:.9rem;margin-bottom:16px}
.estimate-table{width:100%;border-collapse:collapse}
.estimate-table th,.estimate-table td{padding:10px 12px;text-align:left;border-bottom:1px solid var(--border);font-size:.9rem}
.estimate-table th{font-size:.75rem;text-transform:uppercase;letter-spacing:.05em;color:var(--text-muted);font-weight:600}
.estimate-table tr.short td{color:var(--danger);font-weight:600}
.estimate-table tr.ok td{color:var(--success)}

/* Help Section */
.help-section{background:var(--surface)}
.help-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:20px;margin-bottom:40px}
.help-card{background:var(--bg);border:1px solid var(--border);border-radius:var(--radius);padding:24px}
.help-icon{width:36px;height:36px;border-radius:50%;background:var(--primary);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:800;font-size:.9rem;margin-bottom:12px}
.help-card h3{font-size:1rem;margin-bottom:8px}
.help-card p{font-size:.85rem;color:var(--text-muted);line-height:1.5}
.help-details{display:grid;grid-template-columns:1fr 1fr;gap:24px}
.help-block h3{font-size:1rem;margin-bottom:12px;padding-bottom:8px;border-bottom:2px solid var(--primary-light)}
.help-block ul{list-style:none;padding:0}
.help-block li{padding:6px 0;font-size:.9rem;color:var(--text-muted);padding-left:20px;position:relative}
.help-block li::before{content:"";position:absolute;left:0;top:14px;width:6px;height:6px;border-radius:50%;background:var(--primary)}
.help-block p{font-size:.9rem;color:var(--text-muted);line-height:1.6}

/* Modal */
.modal-overlay{position:fixed;inset:0;background:rgba(0,0,0,.5);display:flex;align-items:center;justify-content:center;z-index:200;padding:20px}
.modal-overlay[hidden]{display:none}
.modal{background:var(--surface);border-radius:var(--radius);padding:32px;max-width:560px;width:100%;max-height:80vh;overflow-y:auto;box-shadow:var(--shadow-md)}
.modal h3{font-size:1.2rem;margin-bottom:8px}
.modal-desc{color:var(--text-muted);font-size:.9rem;margin-bottom:20px}
.preset-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-bottom:20px}
.preset-btn{padding:14px;border:1px solid var(--border);border-radius:var(--radius-sm);background:var(--surface-alt);cursor:pointer;text-align:left;transition:all .15s}
.preset-btn:hover{border-color:var(--primary);background:var(--primary-light)}
.preset-btn strong{display:block;font-size:.9rem;margin-bottom:2px}
.preset-btn span{font-size:.75rem;color:var(--text-muted)}

/* Footer */
.site-footer{background:var(--text);color:var(--text-light);padding:40px 0 20px;margin-top:40px}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:32px;margin-bottom:32px}
.footer-logo{margin-bottom:8px;font-size:1rem;color:#fff}
.footer-desc{font-size:.85rem;line-height:1.5}
.footer-links{list-style:none;padding:0}
.footer-links li{margin-bottom:6px}
.footer-links a{color:var(--text-light);text-decoration:none;font-size:.85rem;transition:color .15s}
.footer-links a:hover{color:#fff}
.site-footer h4{font-size:.8rem;text-transform:uppercase;letter-spacing:.08em;color:#fff;margin-bottom:12px}
.footer-bottom{display:flex;justify-content:space-between;padding-top:20px;border-top:1px solid rgba(255,255,255,.1);font-size:.8rem}

/* Print */
@media print{
  .site-header,.site-footer,.section-actions,.add-form-card,.planner-section,.help-section,.hero-actions,.btn,.list-controls,#modal-overlay{display:none!important}
  body{background:#fff}
  .inventory-layout{grid-template-columns:1fr}
  .inventory-list{max-height:none;overflow:visible}
  .inv-item{break-inside:avoid}
}

/* Responsive */
@media(max-width:900px){
  .inventory-layout{grid-template-columns:1fr}
  .planner-layout{grid-template-columns:1fr}
  .help-grid{grid-template-columns:repeat(2,1fr)}
  .help-details{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr 1fr}
  .dashboard-grid{grid-template-columns:repeat(2,1fr)}
}
@media(max-width:600px){
  .nav{gap:12px}
  .nav a{font-size:.8rem}
  .hero{padding:40px 0 24px}
  .hero h1{font-size:1.5rem}
  .form-row-split{grid-template-columns:1fr}
  .help-grid{grid-template-columns:1fr}
  .footer-grid{grid-template-columns:1fr}
  .preset-grid{grid-template-columns:1fr}
  .dashboard-grid{grid-template-columns:1fr 1fr}
  .section-header{flex-direction:column;align-items:flex-start}
  .inv-item{grid-template-columns:1fr;gap:8px}
  .inv-item-qty{text-align:left}
}


/* Factory-injected deployment helpers. The AI owns the site design above this block. */
.ad-unit {
  width: min(100%, 720px);
  min-height: 120px;
  margin: 24px auto;
  display: block;
}

.legal-page {
  width: min(900px, calc(100% - 32px));
  margin: 40px auto;
}

.factory-fallback-nav {
  width: min(900px, calc(100% - 32px));
  margin: 24px auto 0;
  display: flex;
  flex-wrap: wrap;
  gap: 10px 16px;
  align-items: center;
  font-size: 0.95rem;
}

.factory-fallback-nav a {
  color: inherit;
  text-decoration: none;
  border-bottom: 1px solid currentColor;
}