:root{--bg:#f0f2f5;--surface:#fff;--surface-soft:#eef3f2;--text:#17202a;--muted:#667085;--line:#e2e6eb;--accent:#18a47a;--accent-strong:#08745a;--accent-bg:#ecfdf5;--warning:#b45309;--danger:#dc2626;--blue:#175cd3;--purple:#8a5cf6;--amber:#f59e0b;--shadow:0 2px 12px rgba(20,35,45,0.06);--shadow-lg:0 14px 38px rgba(20,35,45,0.08)}
*{box-sizing:border-box}
body{margin:0;min-height:100vh;display:grid;grid-template-columns:250px 1fr;background:var(--bg);color:var(--text);font-family:Inter,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif}

/* Toast */
.toast{position:fixed;top:16px;right:16px;z-index:1000;display:flex;align-items:center;gap:12px;max-width:420px;padding:14px 18px;border-radius:10px;background:var(--surface);border:1px solid var(--line);box-shadow:var(--shadow-lg);font-size:14px}
.toast.success{border-color:var(--accent);background:var(--accent-bg)}.toast.error{border-color:var(--danger);background:#fef2f2}
.toast.hidden{display:none}.toast-close{flex:0 0 auto;width:28px;height:28px;border:0;border-radius:4px;background:transparent;color:var(--muted);font-size:18px;cursor:pointer}

/* Sidebar */
.sidebar{min-height:100vh;display:flex;flex-direction:column;gap:16px;padding:16px;background:#0f1419;color:#f9fafb}
.brand{display:flex;align-items:center;gap:10px}
.brand-mark{width:32px;height:32px;border-radius:8px;background:radial-gradient(circle at 26px 9px,#ff4053 0 5px,transparent 6px),radial-gradient(circle at 10px 10px,#21c7a8 0 6px,transparent 7px),radial-gradient(circle at 23px 25px,#1b7cff 0 6px,transparent 7px),radial-gradient(circle at 8px 25px,#8a5cf6 0 5px,transparent 6px);background-color:#fff}
.brand strong,.brand span{display:block}.brand span{margin-top:1px;color:#8b949e;font-size:12px}
.nav{display:grid;gap:2px}
.nav a{color:#c7d1dc;text-decoration:none;padding:8px 12px;border-radius:8px;font-size:13px;cursor:pointer;transition:all .15s}
.nav a.active{color:#fff;background:rgba(255,255,255,0.12);font-weight:600}
.nav a:hover{color:#fff;background:rgba(255,255,255,0.08)}
.safety{margin-top:auto;display:flex;gap:8px;padding:10px;border:1px solid rgba(255,255,255,0.1);border-radius:8px;background:rgba(255,255,255,0.04)}
.dot{flex:0 0 auto;width:8px;height:8px;margin-top:4px;border-radius:50%;background:var(--accent)}
.safety p{margin:3px 0 0;color:#8b949e;font-size:11px}
.sidebar-auth{padding:10px;border:1px solid rgba(255,255,255,0.1);border-radius:8px;font-size:12px}
.sidebar-auth p{margin:2px 0 0;color:#8b949e;font-size:11px}

/* Main */
.main{min-width:0;padding:24px;overflow-y:auto}
.view{display:none}.view.active{display:block}
.topbar{display:flex;justify-content:space-between;align-items:flex-start;gap:16px;margin-bottom:20px}
.topbar-actions{display:flex;gap:8px;align-items:center}
.eyebrow{margin:0 0 2px;color:var(--accent-strong);font-weight:700;font-size:11px;text-transform:uppercase;letter-spacing:.05em}
h1{margin:0;font-size:24px;line-height:1.2}h2{margin:0;font-size:16px}
.icon-button{width:36px;height:36px;border:1px solid var(--line);border-radius:8px;background:var(--surface);color:var(--text);font-size:16px;cursor:pointer;transition:all .15s}
.icon-button:hover{background:var(--surface-soft);border-color:var(--accent)}
.search-input{padding:7px 12px;border:1px solid var(--line);border-radius:8px;font-size:13px;background:var(--surface);width:100%}
.search-input:focus{outline:none;border-color:var(--accent)}
.primary-button{width:100%;min-height:38px;border:0;border-radius:8px;background:var(--accent-strong);color:#fff;font-weight:700;cursor:pointer;font-size:14px;transition:all .15s}
.primary-button:hover{background:#065f4c}
.hint{margin:6px 0 0;color:var(--muted);font-size:12px;line-height:1.4}

/* KPI row */
.kpi-row{display:grid;grid-template-columns:repeat(6,1fr);gap:10px;margin-bottom:18px}
.kpi{display:flex;align-items:center;gap:10px;background:var(--surface);border:1px solid var(--line);border-radius:10px;padding:14px;box-shadow:var(--shadow);transition:transform .15s}
.kpi:hover{transform:translateY(-1px);box-shadow:var(--shadow-lg)}
.kpi-icon{width:36px;height:36px;border-radius:8px;display:flex;align-items:center;justify-content:center;font-size:18px;flex-shrink:0}
.kpi-blue{background:#e8f2ff;color:var(--blue)}.kpi-green{background:#dff7ee;color:var(--accent-strong)}.kpi-amber{background:#fef3c7;color:var(--warning)}.kpi-purple{background:#f0e7ff;color:var(--purple)}.kpi-teal{background:#e0f7f5;color:#0d9488}.kpi-red{background:#ffe4e6;color:var(--danger)}
.kpi-body{min-width:0}.kpi-body small{display:block;font-size:11px;color:var(--muted);font-weight:600;text-transform:uppercase;letter-spacing:.03em}
.kpi-body strong{display:block;font-size:22px;line-height:1.2;margin-top:2px}
.kpi-body span{font-size:11px;color:var(--muted)}

/* Metrics */
.metrics{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:10px;margin-bottom:16px}
.metrics-3{grid-template-columns:repeat(3,minmax(0,1fr))}
.metric,.panel{background:var(--surface);border:1px solid var(--line);border-radius:10px;box-shadow:var(--shadow)}
.metric{padding:14px}.metric span,.metric small{display:block;color:var(--muted)}.metric strong{display:block;margin:6px 0 2px;font-size:24px}.metric small{font-size:11px}

/* Grid */
.grid-2{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.panel{padding:16px}.panel.wide{grid-column:1/-1}.panel.hidden{display:none}
.panel-head{display:flex;justify-content:space-between;align-items:center;gap:12px;margin-bottom:12px}

/* Badges */
.badge{display:inline-flex;align-items:center;min-height:22px;padding:2px 8px;border-radius:999px;color:#075642;background:#dff7ee;font-size:11px;font-weight:700}
.badge.muted{color:#344054;background:#edf0f2}.badge.connected{color:#075642;background:#dff7ee}.badge.disconnected{color:#92400e;background:#fef3c7}

/* Status list */
.status-list{display:grid;gap:8px;margin:0}
.status-list div{display:flex;justify-content:space-between;gap:12px;padding-bottom:8px;border-bottom:1px solid var(--line)}
.status-list div:last-child{border-bottom:0;padding-bottom:0}
dt{color:var(--muted);font-size:12px}dd{margin:0;font-weight:600;text-align:right;font-size:13px}

/* Sub-tabs */
.atabs{display:flex;gap:4px;margin-bottom:16px;border-bottom:2px solid var(--line);padding-bottom:0}
.atab{padding:8px 14px;border:0;background:transparent;color:var(--muted);font-size:13px;font-weight:600;cursor:pointer;border-bottom:2px solid transparent;margin-bottom:-2px;transition:all .15s}
.atab.active{color:var(--accent-strong);border-bottom-color:var(--accent-strong)}.atab:hover{color:var(--text)}
.atab-content{display:none}.atab-content.active{display:block}

/* Performer cards */
.performer-list{display:grid;gap:6px}
.performer-card{display:flex;justify-content:space-between;align-items:center;padding:8px 10px;border:1px solid var(--line);border-radius:8px;background:#fbfcfd;font-size:12px;transition:all .15s}
.performer-card:hover{background:var(--surface-soft);border-color:var(--accent)}
.performer-card.warning{border-color:#fecaca;background:#fff8f8}
.performer-card .perf-title{font-weight:600;flex:1;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.performer-card .perf-stats{display:flex;gap:8px;font-size:11px;color:var(--muted);flex-shrink:0}
.performer-card .perf-stats strong{color:var(--text)}

/* Quick recs */
.quick-recs{display:grid;gap:6px}
.quick-rec{display:flex;align-items:center;gap:8px;padding:8px 10px;border:1px solid var(--line);border-radius:6px;background:#fbfcfd;font-size:12px;cursor:pointer;transition:all .15s}
.quick-rec:hover{background:var(--surface-soft)}
.quick-rec-icon{font-size:16px;flex-shrink:0}
.quick-rec-text{flex:1;font-weight:500}
.quick-rec-impact{font-size:11px;font-weight:700;color:var(--accent-strong)}

/* Table */
.items-table-wrap{overflow-x:auto}
.items-table{width:100%;border-collapse:collapse;font-size:12px}
.items-table th{padding:8px;text-align:left;font-size:10px;font-weight:700;color:var(--muted);text-transform:uppercase;letter-spacing:.03em;border-bottom:2px solid var(--line);white-space:nowrap}
.items-table td{padding:8px;border-bottom:1px solid var(--line);vertical-align:middle}
.items-table tr:last-child td{border-bottom:0}
.items-table tbody tr:hover td{background:var(--surface-soft)}
.item-link{color:var(--accent-strong);text-decoration:none;font-size:12px;font-weight:600}.item-link:hover{text-decoration:underline}

/* Score badge */
.score-badge{display:inline-flex;align-items:center;justify-content:center;width:30px;height:18px;border-radius:4px;font-size:10px;font-weight:800}
.score-strong{background:#dff7ee;color:#075642}.score-medium{background:#fef3c7;color:#92400e}.score-weak{background:#fef2f2;color:#991b1b}.score-organic{background:#f3f4f6;color:#6b7280}

/* Charts */
.chart-wrap{position:relative;height:260px}.chart-wrap-sm{position:relative;height:200px}

/* AI */
.ai-btn{padding:6px 12px;border:1px solid var(--line);border-radius:6px;background:var(--surface);color:var(--text);font-size:13px;font-weight:600;cursor:pointer;white-space:nowrap;transition:all .15s}
.ai-btn:hover{background:var(--surface-soft)}.ai-btn:disabled{opacity:.5;cursor:not-allowed}
.ai-result{margin-top:12px;padding:14px;border:1px solid var(--line);border-radius:8px;background:#fbfcfd;max-height:480px;overflow-y:auto;font-size:14px;line-height:1.7}
.ai-result.hidden{display:none}
.ai-result h1,.ai-result h2,.ai-result h3{margin:12px 0 6px;font-size:15px;color:var(--accent-strong)}
.ai-result strong{color:var(--accent-strong)}

/* ROI form */
.roi-form{display:grid;grid-template-columns:1fr 1fr 1fr 1fr;gap:10px}
.form-group{display:flex;flex-direction:column;gap:3px}
.form-group.full{grid-column:1/-1}
.form-group label{font-size:10px;font-weight:700;color:var(--muted);text-transform:uppercase;letter-spacing:.03em}
.form-group input,.form-group select,.form-group textarea{padding:7px 10px;border:1px solid var(--line);border-radius:6px;font-size:13px;font-family:inherit;background:var(--surface)}
.form-group input:focus,.form-group select:focus,.form-group textarea:focus{outline:none;border-color:var(--accent)}

/* Reviews */
.reviews-list{display:grid;gap:8px}
.review-card{padding:12px;border:1px solid var(--line);border-radius:8px;background:#fbfcfd}
.review-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:4px}
.review-author{font-weight:700;font-size:13px}.review-date{color:var(--muted);font-size:11px}
.review-stars{color:var(--amber);font-size:13px}
.review-text{font-size:13px;line-height:1.5;margin:0}

/* Snapshots */
.snap-list{display:grid;gap:6px}
.snap-card{display:flex;justify-content:space-between;align-items:center;padding:8px 12px;border:1px solid var(--line);border-radius:6px;background:#fbfcfd;cursor:pointer;font-size:12px;transition:all .15s}
.snap-card:hover{background:var(--surface-soft)}
.snap-date{font-weight:600}.snap-items{color:var(--muted);font-size:11px}
.snap-actions button{padding:3px 6px;border:1px solid var(--line);border-radius:4px;background:var(--surface);font-size:11px;cursor:pointer}

/* Diff */
.diff-row{display:grid;grid-template-columns:180px 1fr 1fr;gap:6px;padding:6px 8px;border-bottom:1px solid var(--line);font-size:12px}
.diff-row:last-child{border-bottom:0}.diff-header{font-weight:700;background:var(--surface-soft);color:var(--muted);font-size:10px;text-transform:uppercase}
.diff-changed{background:#fef3c7}.diff-added{color:var(--accent-strong)}

/* Hypotheses */
.hyp-form-grid{display:grid;grid-template-columns:1fr 1fr;gap:8px}
.hyp-list{display:grid;gap:8px}
.hyp-card{padding:12px;border:1px solid var(--line);border-radius:8px;background:#fbfcfd;transition:all .15s}
.hyp-card.completed{border-color:var(--accent);background:#f0fdf9}.hyp-card.testing{border-color:var(--blue);background:#eff6ff}
.hyp-card-head{display:flex;justify-content:space-between;align-items:flex-start;gap:6px;margin-bottom:4px}
.hyp-card-text{font-size:13px;line-height:1.5;margin:0}
.hyp-card-meta{display:flex;gap:12px;margin-top:4px;font-size:11px;color:var(--muted)}
.hyp-card-actions{display:flex;gap:4px;margin-top:6px}
.hyp-card-actions button{padding:3px 6px;border:1px solid var(--line);border-radius:4px;background:var(--surface);font-size:11px;cursor:pointer;transition:all .15s}
.hyp-card-actions button:hover{background:var(--surface-soft)}
.hyp-card-actions .btn-danger{color:var(--danger);border-color:#fecaca}.hyp-card-actions .btn-danger:hover{background:#fef2f2}
.hyp-status{display:inline-flex;padding:2px 6px;border-radius:999px;font-size:10px;font-weight:700}
.hyp-status.active{color:#075642;background:#dff7ee}.hyp-status.testing{color:#1d4ed8;background:#dbeafe}
.hyp-status.completed{color:#075642;background:#dff7ee}.hyp-status.cancelled{color:#6b7280;background:#f3f4f6}
.hyp-empty{text-align:center;color:var(--muted);padding:20px;font-size:13px}

/* Smart analytics */
.rec-list{display:grid;gap:8px}
.rec-card{padding:12px;border:1px solid var(--line);border-radius:8px;background:#fbfcfd;transition:all .15s}
.rec-card:hover{border-color:var(--accent)}
.rec-card.high{border-left:3px solid var(--accent)}.rec-card.medium{border-left:3px solid var(--blue)}
.rec-head{display:flex;align-items:center;gap:6px;margin-bottom:4px}
.rec-icon{font-size:18px}.rec-title{font-weight:700;font-size:13px}
.rec-priority{font-size:9px;font-weight:800;text-transform:uppercase;padding:2px 5px;border-radius:3px;margin-left:auto}
.rec-priority.high{background:#dff7ee;color:#075642}.rec-priority.medium{background:#dbeafe;color:#1d4ed8}
.rec-reason{color:var(--text);font-size:12px;line-height:1.5;margin:0}
.rec-impact{margin-top:4px;font-size:11px;color:var(--accent-strong);font-weight:600}

.sm-hyp-card{padding:12px;border:1px solid var(--line);border-radius:8px;background:#fbfcfd;transition:all .15s}
.sm-hyp-card:hover{border-color:var(--accent)}
.sm-hyp-card.high{border-left:3px solid var(--accent)}.sm-hyp-card.medium{border-left:3px solid var(--blue)}.sm-hyp-card.low{border-left:3px solid var(--warning)}
.sm-hyp-head{display:flex;align-items:center;gap:6px;margin-bottom:4px}
.sm-hyp-title{font-weight:700;font-size:13px}
.sm-hyp-confidence{font-size:9px;font-weight:800;text-transform:uppercase;padding:2px 5px;border-radius:3px}
.sm-hyp-confidence.high{background:#dff7ee;color:#075642}.sm-hyp-confidence.medium{background:#dbeafe;color:#1d4ed8}.sm-hyp-confidence.low{background:#fef3c7;color:#92400e}
.sm-hyp-text{font-size:12px;line-height:1.5;margin:0 0 4px}
.sm-hyp-impact{font-size:11px;font-weight:600;color:var(--accent-strong)}
.sm-hyp-action{font-size:11px;color:var(--muted);margin-top:3px;padding-top:3px;border-top:1px dashed var(--line)}
.sm-hyp-variants{display:flex;gap:8px;margin-top:4px;font-size:11px}
.sm-hyp-variants span{padding:3px 6px;border:1px solid var(--line);border-radius:4px}

.anomaly-row{display:flex;align-items:center;gap:8px;padding:6px 8px;border-bottom:1px solid var(--line);font-size:12px}
.anomaly-row:last-child{border-bottom:0}
.anomaly-badge{padding:2px 5px;border-radius:3px;font-size:10px;font-weight:700}
.anomaly-badge.spike{background:#fef3c7;color:#92400e}.anomaly-badge.drop{background:#fef2f2;color:#991b1b}

.dow-table{width:100%;border-collapse:collapse;font-size:12px}
.dow-table th{padding:6px;text-align:left;font-size:10px;font-weight:700;color:var(--muted);text-transform:uppercase;border-bottom:2px solid var(--line)}
.dow-table td{padding:6px;border-bottom:1px solid var(--line)}
.dow-table .best{background:#f0fdf9;font-weight:600}.dow-table .worst{background:#fff5f5}

.trend-banner{padding:12px;border-radius:8px;font-size:13px;line-height:1.5}
.trend-banner.growing{background:#f0fdf9;border:1px solid rgba(24,164,122,.3)}.trend-banner.declining{background:#fef2f2;border:1px solid rgba(220,38,38,.3)}
.trend-banner.stable{background:#f8fafc;border:1px solid var(--line)}.trend-banner.insufficient{background:#f8fafc;border:1px solid var(--line);color:var(--muted)}

/* Timeline */
.timeline{display:grid;gap:6px}
.step{padding:10px;border:1px solid var(--line);border-radius:8px;background:#fbfcfd}
.step.done{border-color:rgba(24,164,122,.3);background:var(--surface-soft)}
.step strong,.step span{display:block}.step span{margin-top:2px;color:var(--muted);font-size:12px}

/* Endpoint */
.endpoint-list{display:grid;gap:6px}
.endpoint{display:grid;grid-template-columns:56px 1fr;gap:6px;padding:8px;border:1px solid var(--line);border-radius:6px;background:#fbfcfd;font-size:12px}
.method{align-self:start;padding:2px 5px;border-radius:3px;background:#e8f2ff;color:var(--blue);font-weight:800;text-align:center;font-size:10px}
.method.post{background:#fff4e5;color:var(--warning)}
.endpoint p{margin:2px 0 0;color:var(--muted);font-size:11px}

/* Responsive */
@media(max-width:1100px){.kpi-row{grid-template-columns:repeat(3,1fr)}}
@media(max-width:980px){body{grid-template-columns:1fr}.sidebar{min-height:auto}.metrics,.metrics-3,.grid-2{grid-template-columns:1fr}.kpi-row{grid-template-columns:repeat(2,1fr)}.panel.wide{grid-column:auto}.roi-form{grid-template-columns:1fr 1fr}}
@media(max-width:560px){.main,.sidebar{padding:12px}h1{font-size:20px}.metrics{gap:6px}.kpi-row{grid-template-columns:1fr 1fr}.search-input{width:100%}.roi-form{grid-template-columns:1fr}}