*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
:root{
  --bg:#0f1117;--bg2:#181b26;--bg3:#1f2333;--border:#2a2f42;
  --text:#e2e6f3;--text2:#9ba3bd;--text3:#6b7394;
  --accent:#6366f1;--accent2:#818cf8;--accent-bg:rgba(99,102,241,.12);
  --green:#34d399;--green-bg:rgba(52,211,153,.1);
  --red:#f87171;--red-bg:rgba(248,113,113,.1);
  --yellow:#fbbf24;--yellow-bg:rgba(251,191,36,.1);
  --radius:12px;--radius-sm:8px;
  --font:system-ui,-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,sans-serif;
  --shadow:0 2px 16px rgba(0,0,0,.3);
}
html{scroll-behavior:smooth}
body{font-family:var(--font);background:var(--bg);color:var(--text);line-height:1.6;min-height:100vh}
a{color:var(--accent2);text-decoration:none}
a:hover{text-decoration:underline}

/* Header */
.site-header{position:sticky;top:0;z-index:100;background:rgba(15,17,23,.85);backdrop-filter:blur(12px);border-bottom:1px solid var(--border)}
.header-inner{max-width:1200px;margin:0 auto;padding:0 24px;display:flex;align-items:center;justify-content:space-between;height:56px}
.logo{display:flex;align-items:center;gap:10px;font-weight:700;font-size:1.1rem;color:var(--text)}
.logo:hover{text-decoration:none}
.logo svg{flex-shrink:0}
.site-nav{display:flex;gap:24px}
.site-nav a{color:var(--text2);font-size:.9rem;font-weight:500}
.site-nav a:hover{color:var(--text);text-decoration:none}

/* Hero */
.hero-section{max-width:1200px;margin:0 auto;padding:60px 24px 40px}
.hero-content{text-align:center;max-width:700px;margin:0 auto}
.hero-content h1{font-size:clamp(1.8rem,4vw,2.8rem);font-weight:800;line-height:1.2;margin-bottom:16px;background:linear-gradient(135deg,var(--text) 0%,var(--accent2) 100%);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.hero-sub{font-size:1.1rem;color:var(--text2);margin-bottom:36px;line-height:1.7}
.hero-stats{display:flex;gap:16px;justify-content:center;flex-wrap:wrap}
.stat-card{background:var(--bg2);border:1px solid var(--border);border-radius:var(--radius);padding:20px 28px;min-width:140px}
.stat-value{display:block;font-size:1.8rem;font-weight:700;color:var(--accent2)}
.stat-label{font-size:.8rem;color:var(--text3);text-transform:uppercase;letter-spacing:.05em}

/* Dashboard */
.dashboard-section{max-width:1200px;margin:0 auto;padding:0 24px 48px}
.dashboard-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px;align-items:start}
@media(max-width:860px){.dashboard-grid{grid-template-columns:1fr}}

.panel{background:var(--bg2);border:1px solid var(--border);border-radius:var(--radius);padding:28px}
.panel h2{font-size:1.15rem;font-weight:600;margin-bottom:20px}

/* Form */
.form-group{margin-bottom:16px}
.form-group label{display:block;font-size:.85rem;font-weight:500;color:var(--text2);margin-bottom:6px}
.form-group input,.form-group select{width:100%;padding:10px 14px;background:var(--bg3);border:1px solid var(--border);border-radius:var(--radius-sm);color:var(--text);font-size:.95rem;font-family:var(--font);transition:border-color .15s}
.form-group input:focus,.form-group select:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-bg)}
.form-group input::placeholder{color:var(--text3)}
.optional{color:var(--text3);font-weight:400}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.form-actions{display:flex;gap:12px;margin-top:20px}

.btn{display:inline-flex;align-items:center;justify-content:center;padding:10px 20px;border-radius:var(--radius-sm);font-size:.9rem;font-weight:600;font-family:var(--font);cursor:pointer;border:1px solid transparent;transition:all .15s}
.btn-primary{background:var(--accent);color:#fff}
.btn-primary:hover{background:var(--accent2);text-decoration:none}
.btn-ghost{background:transparent;color:var(--text2);border-color:var(--border)}
.btn-ghost:hover{border-color:var(--text3);color:var(--text);text-decoration:none}
.btn-sm{padding:6px 14px;font-size:.8rem}
.btn-danger{color:var(--red);border-color:rgba(248,113,113,.3)}
.btn-danger:hover{background:var(--red-bg);border-color:var(--red);text-decoration:none}

/* Analytics */
.bias-display{display:flex;gap:24px;align-items:center;margin-bottom:24px}
.bias-ring{flex-shrink:0;width:120px;height:120px}
.bias-svg{width:100%;height:100%}
.bias-track{fill:none;stroke:var(--border);stroke-width:8}
.bias-fill{fill:none;stroke:var(--accent);stroke-width:8;stroke-linecap:round;stroke-dasharray:327;stroke-dashoffset:327;transition:stroke-dashoffset .6s ease,stroke .3s}
.bias-number{text-anchor:middle;font-size:1.6rem;font-weight:700;fill:var(--text)}
.bias-unit{text-anchor:middle;font-size:.65rem;fill:var(--text3)}
.bias-text p{color:var(--text2);font-size:.9rem;line-height:1.6}
.bias-suggestion{color:var(--accent2)!important;font-weight:500;margin-top:4px}

/* Trend chart */
.trend-chart{background:var(--bg3);border-radius:var(--radius-sm);padding:16px;margin-bottom:20px;min-height:120px}
.chart-placeholder{color:var(--text3);font-size:.85rem;text-align:center;padding:24px 0}
.chart-row{display:flex;align-items:center;gap:8px;margin-bottom:6px;font-size:.8rem}
.chart-label{width:80px;color:var(--text3);text-align:right;flex-shrink:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.chart-bars{flex:1;display:flex;gap:3px;align-items:center;height:18px}
.chart-bar-pred{background:var(--accent);height:100%;border-radius:2px;min-width:2px;opacity:.6}
.chart-bar-actual{background:var(--green);height:100%;border-radius:2px;min-width:2px}
.chart-bar-actual.over{background:var(--red)}
.chart-val{color:var(--text2);width:40px;flex-shrink:0}
.chart-legend{display:flex;gap:16px;margin-top:8px;font-size:.75rem;color:var(--text3)}
.legend-dot{width:8px;height:8px;border-radius:50%;display:inline-block;margin-right:4px}
.legend-dot.pred{background:var(--accent);opacity:.6}
.legend-dot.actual-ok{background:var(--green)}
.legend-dot.actual-over{background:var(--red)}

/* Category breakdown */
.category-breakdown h3{font-size:.85rem;font-weight:600;color:var(--text2);margin-bottom:10px}
.breakdown-list{display:flex;flex-direction:column;gap:8px}
.breakdown-row{display:flex;align-items:center;gap:10px;font-size:.85rem}
.breakdown-label{width:100px;color:var(--text2);flex-shrink:0}
.breakdown-bar-wrap{flex:1;height:8px;background:var(--bg);border-radius:4px;overflow:hidden}
.breakdown-bar{height:100%;border-radius:4px;background:var(--accent);transition:width .3s}
.breakdown-bar.over{background:var(--red)}
.breakdown-val{width:48px;text-align:right;color:var(--text3);flex-shrink:0}
.empty-state{color:var(--text3);font-size:.85rem}

/* History */
.history-section{max-width:1200px;margin:0 auto;padding:0 24px 48px}
.section-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:16px;flex-wrap:wrap;gap:12px}
.section-header h2{font-size:1.15rem;font-weight:600}
.section-actions{display:flex;gap:8px}
.table-wrapper{overflow-x:auto;border:1px solid var(--border);border-radius:var(--radius)}
table{width:100%;border-collapse:collapse;font-size:.87rem}
th{text-align:left;padding:12px 16px;background:var(--bg3);color:var(--text2);font-weight:600;font-size:.8rem;text-transform:uppercase;letter-spacing:.04em;border-bottom:1px solid var(--border)}
td{padding:10px 16px;border-bottom:1px solid var(--border);color:var(--text);vertical-align:middle}
tr:last-child td{border-bottom:none}
tr:hover td{background:rgba(99,102,241,.04)}
.td-error.under{color:var(--green)}
.td-error.over{color:var(--red)}
.btn-delete{background:transparent;border:none;color:var(--text3);cursor:pointer;font-size:1.1rem;padding:4px 8px;border-radius:4px;line-height:1}
.btn-delete:hover{color:var(--red);background:var(--red-bg)}
.empty-history{color:var(--text3);font-size:.9rem;text-align:center;padding:32px 0;display:none}
.empty-history.visible{display:block}

/* Guide */
.guide-section{max-width:1200px;margin:0 auto;padding:0 24px 64px}
.guide-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px}
@media(max-width:700px){.guide-grid{grid-template-columns:1fr}}
.guide-block{background:var(--bg2);border:1px solid var(--border);border-radius:var(--radius);padding:28px}
.guide-block h2{font-size:1.05rem;font-weight:600;margin-bottom:12px}
.guide-block p{color:var(--text2);font-size:.92rem;line-height:1.7;margin-bottom:10px}
.guide-block ul{list-style:none;padding:0}
.guide-block li{color:var(--text2);font-size:.92rem;line-height:1.7;padding:6px 0 6px 20px;position:relative}
.guide-block li::before{content:"→";position:absolute;left:0;color:var(--accent);font-weight:700}
.guide-block strong{color:var(--text)}

/* Footer */
.site-footer{border-top:1px solid var(--border);margin-top:40px}
.footer-inner{max-width:1200px;margin:0 auto;padding:32px 24px;text-align:center}
.footer-inner p{color:var(--text3);font-size:.85rem;margin-bottom:8px}
.footer-links{display:flex;gap:20px;justify-content:center;margin-bottom:12px;flex-wrap:wrap}
.footer-links a{color:var(--text3);font-size:.85rem}
.footer-links a:hover{color:var(--text2)}
.footer-meta{font-size:.75rem!important;color:var(--text3);opacity:.6}

/* Toast */
.toast{position:fixed;bottom:24px;right:24px;background:var(--bg2);border:1px solid var(--border);border-radius:var(--radius-sm);padding:12px 20px;font-size:.85rem;color:var(--text);box-shadow:var(--shadow);z-index:999;opacity:0;transform:translateY(8px);transition:all .25s;pointer-events:none}
.toast.show{opacity:1;transform:translateY(0)}

/* Responsive */
@media(max-width:600px){
  .header-inner{padding:0 16px}
  .hero-section{padding:40px 16px 28px}
  .dashboard-section,.history-section,.guide-section{padding-left:16px;padding-right:16px}
  .panel{padding:20px}
  .form-row{grid-template-columns:1fr}
  .hero-stats{gap:10px}
  .stat-card{padding:14px 18px;min-width:100px}
  .stat-value{font-size:1.4rem}
  .bias-display{flex-direction:column;align-items:flex-start}
}



/* 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;
}