:root {
  --primary: #1f4068; --primary-dark: #162447; --accent: #fd7e14;
  --good: #2a9d8f; --bad: #dc3545; --warn: #fd7e14;
  --bg: #f5f7fa; --card: #ffffff; --border: #e1e5eb;
  --text: #222; --muted: #666;
}
* { box-sizing: border-box; }
body { font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
       margin: 0; padding: 0; background: var(--bg); color: var(--text); }
header { background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
         color: white; padding: 30px 40px; }
header h1 { margin: 0 0 6px 0; font-size: 26px; font-weight: 700; }
header .meta { opacity: 0.85; font-size: 13px; }
.container { max-width: 1400px; margin: 0 auto; padding: 0 30px; }
.tabs { display: flex; gap: 4px; padding: 16px 0 0 0; flex-wrap: wrap;
        border-bottom: 2px solid var(--border); margin-bottom: 24px; }
.tab-btn { background: transparent; border: none; padding: 12px 18px;
           font-size: 14px; font-weight: 600; cursor: pointer; color: var(--muted);
           border-bottom: 3px solid transparent; transition: all 0.15s;
           border-radius: 6px 6px 0 0; }
.tab-btn:hover { background: rgba(31,64,104,0.06); color: var(--primary); }
.tab-btn.active { color: var(--primary); border-bottom-color: var(--primary);
                  background: rgba(31,64,104,0.04); }
section.tab-panel { display: none; padding-bottom: 60px; }
section.tab-panel.active { display: block; }
h2 { color: var(--primary); margin-top: 30px; padding-bottom: 6px;
     border-bottom: 2px solid var(--border); font-size: 20px; }
h3 { color: var(--primary); font-size: 16px; margin-top: 24px; }
.card { background: var(--card); padding: 22px; border-radius: 12px;
        box-shadow: 0 1px 3px rgba(0,0,0,0.06); margin-bottom: 20px; }
.grid { display: grid; gap: 16px; }
.grid-2 { grid-template-columns: 1fr 1fr; }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
@media (max-width: 900px) { .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; } }
.stat { background: var(--card); padding: 18px; border-radius: 10px;
        box-shadow: 0 1px 3px rgba(0,0,0,0.06); border-left: 4px solid var(--primary); }
.stat .label { color: var(--muted); font-size: 12px; text-transform: uppercase; letter-spacing: 0.4px; }
.stat .value { font-size: 26px; font-weight: 700; color: var(--primary); margin-top: 4px; }
.stat .sub { color: var(--muted); font-size: 12px; }
.stat.warn { border-left-color: var(--bad); } .stat.warn .value { color: var(--bad); }
.stat.good { border-left-color: var(--good); } .stat.good .value { color: var(--good); }
.stat.accent { border-left-color: var(--accent); } .stat.accent .value { color: var(--accent); }
.callout { background: var(--card); padding: 18px 24px; border-radius: 10px;
           border-left: 5px solid var(--accent); margin: 16px 0;
           box-shadow: 0 1px 3px rgba(0,0,0,0.06); }
.callout.info { border-left-color: var(--primary); }
.callout.good { border-left-color: var(--good); }
.callout.warn { border-left-color: var(--accent); }
.callout.bad  { border-left-color: var(--bad); }
.callout h4 { margin: 0 0 6px 0; font-size: 14px; color: var(--primary); }
.callout p  { margin: 0; color: var(--muted); font-size: 14px; line-height: 1.5; }
form.lookup { background: var(--card); padding: 20px; border-radius: 12px;
              box-shadow: 0 1px 3px rgba(0,0,0,0.06); display: grid; gap: 12px;
              grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); align-items: end; }
form label { display: block; font-size: 12px; color: var(--muted); margin-bottom: 4px; text-transform: uppercase; letter-spacing: 0.3px; }
form input, form select { width: 100%; padding: 8px 10px; border: 1px solid var(--border);
                          border-radius: 6px; font-size: 14px; font-family: inherit; }
form input:focus, form select:focus { outline: 2px solid var(--primary); outline-offset: -1px; }
.input-mode-toggle { display: flex; gap: 8px; }
.input-mode-toggle label { flex: 1; cursor: pointer; padding: 6px 8px; border: 1px solid var(--border);
                           border-radius: 6px; text-align: center; font-size: 13px; color: var(--text); }
.input-mode-toggle input[type="radio"] { display: none; }
.input-mode-toggle label:has(input:checked) { background: var(--primary); color: white; }
button.primary { background: var(--primary); color: white; border: none; padding: 10px 18px;
                 border-radius: 6px; font-size: 14px; font-weight: 600; cursor: pointer; }
button.primary:hover { background: var(--primary-dark); }
table { width: 100%; border-collapse: collapse; background: var(--card); border-radius: 10px;
        overflow: hidden; box-shadow: 0 1px 3px rgba(0,0,0,0.06); font-size: 13px; }
th { background: var(--primary); color: white; padding: 11px 9px; text-align: left;
     font-weight: 600; font-size: 12px; text-transform: uppercase; letter-spacing: 0.3px; }
td { padding: 9px; border-top: 1px solid var(--border); }
tr:nth-child(even) { background: #fafbfc; }
tr.messy-middle, tr.highlight { background: #fff3e0 !important; }
.roas-bad  { color: var(--bad);  font-weight: 700; }
.roas-ok   { color: var(--warn); font-weight: 700; }
.roas-good { color: var(--good); font-weight: 700; }
.badge { display: inline-block; padding: 3px 8px; border-radius: 4px; font-size: 11px; font-weight: 700; text-transform: uppercase; }
.badge.anomaly { background: var(--bad); color: white; }
.badge.ok { background: var(--good); color: white; }
.badge.warn { background: var(--warn); color: white; }
.chart { background: var(--card); padding: 16px; border-radius: 12px;
         box-shadow: 0 1px 3px rgba(0,0,0,0.06); margin-bottom: 20px; }
.chart-caption { color: var(--muted); font-size: 12px; font-style: italic; margin-top: 8px; }
.resolution-path { font-family: 'SF Mono', Monaco, monospace; font-size: 12px; color: var(--muted);
                   padding: 8px 12px; background: #f4f6f8; border-radius: 4px; }
.download-btn { background: var(--good); color: white; padding: 8px 14px; border: none;
                border-radius: 6px; cursor: pointer; font-size: 13px; font-weight: 600;
                text-decoration: none; display: inline-block; }
.error { color: var(--bad); background: #fdecea; padding: 12px; border-radius: 6px; border: 1px solid #f5c6cb; }
.info-line { color: var(--muted); font-size: 13px; }
footer { padding: 30px; text-align: center; color: var(--muted); font-size: 12px;
         border-top: 1px solid var(--border); margin-top: 60px; }