:root{--bg: #0f1115;--surface: #171a21;--surface-2: #1f232c;--border: #2a2f3a;--text: #e8eaed;--text-muted: #9aa0ab;--accent: #4f8cff;--positive: #35c07a;--negative: #ef5a5a;--radius: 12px;--gap: 12px}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif}#root{min-height:100vh}button{cursor:pointer;font-family:inherit}.app-shell{display:flex;flex-direction:column;min-height:100vh}.app-header{display:flex;align-items:center;justify-content:space-between;padding:16px;border-bottom:1px solid var(--border)}.app-header h1{font-size:18px;margin:0}.app-main{flex:1;padding:16px 16px 84px;max-width:900px;width:100%;margin:0 auto}.tab-bar{position:fixed;bottom:0;left:0;right:0;display:flex;background:var(--surface);border-top:1px solid var(--border);padding-bottom:env(safe-area-inset-bottom)}.tab-btn{flex:1;padding:14px 4px;background:none;border:none;color:var(--text-muted);font-size:13px;text-align:center}.tab-btn.active{color:var(--accent);font-weight:600}.section-title{font-size:13px;text-transform:uppercase;letter-spacing:.04em;color:var(--text-muted);margin:24px 0 12px}.card-form{display:flex;flex-direction:column;gap:var(--gap);background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:16px}.card-form label{display:flex;flex-direction:column;gap:4px;font-size:13px;color:var(--text-muted)}.card-form input,.card-form select,.card-form textarea{background:var(--surface-2);border:1px solid var(--border);border-radius:8px;padding:10px;color:var(--text);font-size:15px;font-family:inherit}.field-row{display:grid;grid-template-columns:1fr 1fr;gap:var(--gap)}.inline-new-product{display:flex;flex-direction:column;gap:var(--gap);border:1px dashed var(--border);border-radius:8px;padding:10px}.form-actions{display:flex;gap:8px}button[type=submit]{background:var(--accent);color:#fff;border:none;border-radius:8px;padding:12px;font-size:15px;font-weight:600}button[type=submit]:disabled{opacity:.6;cursor:not-allowed}.secondary-btn{background:var(--surface-2);color:var(--text);border:1px solid var(--border);border-radius:8px;padding:12px}.link-btn{background:none;border:none;color:var(--accent);font-size:13px;padding:4px 0;text-align:left}.form-error{color:var(--negative);font-size:13px;margin:0}.form-info{color:var(--positive);font-size:13px;margin:0}.calc-box{background:var(--surface-2);border-radius:8px;padding:12px;display:flex;flex-direction:column;gap:6px}.calc-row{display:flex;justify-content:space-between;font-size:14px}.calc-row.positive strong{color:var(--positive)}.calc-row.negative strong{color:var(--negative)}.metric-card.positive .metric-value{color:var(--positive)}.metric-card.negative .metric-value{color:var(--negative)}.product-card-row.positive{color:var(--positive)}.product-card-row.negative{color:var(--negative)}.list-row .positive{color:var(--positive)}.list-row .negative{color:var(--negative)}.list{display:flex;flex-direction:column;gap:8px}.list-row{display:flex;justify-content:space-between;align-items:center;gap:8px;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:12px}.list-row-actions{display:flex;align-items:center;gap:8px;flex-shrink:0}.muted{color:var(--text-muted)}.small{font-size:12px}.badge{font-size:11px;padding:2px 8px;border-radius:999px}.muted-badge{background:var(--surface-2);color:var(--text-muted)}.metric-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:var(--gap)}.metric-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:14px;display:flex;flex-direction:column;gap:4px}.metric-label{font-size:12px;color:var(--text-muted)}.metric-value{font-size:20px;font-weight:700}.product-card-list{display:flex;flex-direction:column;gap:12px}.product-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:14px}.product-card-head{display:flex;align-items:center;justify-content:space-between;gap:8px}.product-card-row{display:flex;justify-content:space-between;font-size:14px;padding:4px 0}.progress-row{display:flex;align-items:center;gap:8px;margin-top:6px}.progress-track{flex:1;height:6px;border-radius:999px;background:var(--surface-2);overflow:hidden}.progress-fill{height:100%;background:var(--accent)}.auth-screen{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:16px}.auth-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:24px;width:100%;max-width:360px;display:flex;flex-direction:column;gap:12px}.auth-card h1{margin:0;font-size:22px}.auth-sub{color:var(--text-muted);font-size:13px;margin:0 0 8px}.auth-card form{display:flex;flex-direction:column;gap:12px}.auth-card label{display:flex;flex-direction:column;gap:4px;font-size:13px;color:var(--text-muted)}.auth-card input{background:var(--surface-2);border:1px solid var(--border);border-radius:8px;padding:10px;color:var(--text);font-size:15px}.loading-screen{display:flex;align-items:center;justify-content:center;min-height:100vh;color:var(--text-muted)}@media (min-width: 720px){.app-shell{display:grid;grid-template-columns:220px 1fr;grid-template-rows:auto 1fr}.app-header{grid-column:1;grid-row:1;border-right:1px solid var(--border)}.tab-bar{grid-column:1;grid-row:2;position:static;flex-direction:column;border-top:none;border-right:1px solid var(--border);padding-bottom:0;height:100%}.tab-btn{text-align:left;padding:14px 20px}.app-main{grid-column:2;grid-row:1 / span 2;padding:24px}.metric-grid{grid-template-columns:repeat(4,1fr)}}