/* Statistics Calculator */
.statc-wrap{max-width:660px;margin:0 auto;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif;color:#1a1a1a}
.statc-header{display:flex;align-items:center;gap:12px;margin-bottom:20px}
.statc-icon{width:46px;height:46px;border-radius:12px;background:linear-gradient(135deg,#2563EB,#1e40af);color:#fff;font-size:22px;font-weight:700;font-family:serif;display:flex;align-items:center;justify-content:center;flex-shrink:0}
.statc-title{font-size:22px!important;font-weight:600!important;margin:0 0 3px!important;padding:0!important;border:none!important;color:#1a1a1a!important}
.statc-sub{font-size:13px;color:#666;margin:0}
.statc-section-lbl{font-size:11px;font-weight:700;color:#999;text-transform:uppercase;letter-spacing:.6px;margin-bottom:8px}
.statc-textarea{width:100%;box-sizing:border-box;min-height:90px;padding:12px 14px;border:1.5px solid #d0d0d0;border-radius:10px;font-size:14px;color:#1a1a1a;background:#fff;outline:none;resize:vertical;font-family:inherit;transition:border-color .15s;line-height:1.6}
.statc-textarea:focus{border-color:#2563EB;box-shadow:0 0 0 3px rgba(37,99,235,.1)}
.statc-controls-row{display:flex;gap:10px;align-items:stretch;margin-top:10px}
.statc-type-toggle{display:flex;border:1.5px solid #d0d0d0;border-radius:9px;overflow:hidden;flex:1}
.statc-tbtn{flex:1;padding:9px 12px;border:none;border-right:1px solid #d0d0d0;background:#fff;color:#555;cursor:pointer;transition:background .13s;font-size:13px;font-weight:500}
.statc-tbtn:last-child{border-right:none}
.statc-tbtn.act{background:#dbeafe;color:#1e40af;font-weight:600}
.statc-tbtn:hover:not(.act){background:#eff6ff}
.statc-calc-btn{padding:10px 20px;background:linear-gradient(135deg,#2563EB,#1e40af);color:#fff;border:none;border-radius:9px;font-size:14px;font-weight:600;cursor:pointer;transition:opacity .13s;white-space:nowrap}
.statc-calc-btn:hover{opacity:.9}
.statc-sample-btns{display:flex;align-items:center;gap:7px;margin-top:8px;flex-wrap:wrap}
.statc-sl{font-size:12px;color:#888}
.statc-sbtn{padding:4px 10px;font-size:12px;border:1px solid #d0d0d0;border-radius:6px;background:#fff;color:#555;cursor:pointer;transition:background .13s}
.statc-sbtn:hover{background:#eff6ff;color:#1e40af;border-color:#93c5fd}
/* Primary cards */
.statc-primary-cards{display:grid;grid-template-columns:repeat(4,1fr);gap:10px;margin-top:18px;animation:statc-in .22s ease}
@media(max-width:500px){.statc-primary-cards{grid-template-columns:repeat(2,1fr)}}
@keyframes statc-in{from{opacity:0;transform:translateY(5px)}to{opacity:1;transform:translateY(0)}}
.statc-pcard{border-radius:11px;padding:12px 10px;text-align:center;border:1px solid}
.statc-pcard-sd{background:#1e40af;border-color:#1e40af;color:#fff}
.statc-pcard-mean{background:#dcfce7;border-color:#86efac}
.statc-pcard-median{background:#dbeafe;border-color:#93c5fd}
.statc-pcard-mode{background:#fef3c7;border-color:#fde047}
.statc-pcard-val{font-size:20px;font-weight:700;margin-bottom:3px;font-family:monospace}
.statc-pcard-lbl{font-size:11px;opacity:.8}
.statc-pcard-sd .statc-pcard-val{color:#fff;font-size:22px}
.statc-pcard-mean .statc-pcard-val{color:#166534}
.statc-pcard-median .statc-pcard-val{color:#1e40af}
.statc-pcard-mode .statc-pcard-val{color:#92400E}
/* Full stats */
.statc-stats-grid{display:grid;grid-template-columns:1fr 1fr;gap:1px;background:#e8e8e8;border:1px solid #e8e8e8;border-radius:10px;overflow:hidden;margin-bottom:14px}
.statc-stat-row{display:flex;justify-content:space-between;align-items:center;padding:8px 12px;background:#fff;font-size:13px}
.statc-stat-lbl{color:#555}
.statc-stat-val{font-weight:600;color:#1a1a1a;font-family:monospace}
.statc-stat-row:hover{background:#f8faff}
/* Histogram */
.statc-hist-wrap{background:#fafafa;border:1px solid #e8e8e8;border-radius:10px;padding:14px 16px;margin-bottom:14px}
.statc-hist-chart{display:flex;align-items:flex-end;gap:3px;height:90px;margin-bottom:6px}
.statc-hist-bar-wrap{flex:1;display:flex;flex-direction:column;align-items:center}
.statc-hist-bar{width:100%;border-radius:3px 3px 0 0;background:linear-gradient(180deg,#2563EB,#1e40af);min-height:3px;transition:height .4s ease}
.statc-hist-bar.highlight{background:linear-gradient(180deg,#f59e0b,#d97706)}
.statc-hist-label{font-size:9px;color:#888;margin-top:3px;text-align:center;white-space:nowrap;overflow:hidden;max-width:42px;text-overflow:ellipsis}
/* Z-score table */
table.statc-ztable{width:100%;border-collapse:collapse;font-size:12px;margin-bottom:14px;max-height:300px;overflow-y:auto;display:block}
table.statc-ztable th{padding:6px 10px;text-align:right;color:#888;font-size:11px;text-transform:uppercase;letter-spacing:.4px;border-bottom:1px solid #e8e8e8;background:#fafafa;position:sticky;top:0}
table.statc-ztable th:first-child{text-align:center}
table.statc-ztable td{padding:5px 10px;border-bottom:1px solid #f5f5f5;text-align:right;font-family:monospace}
table.statc-ztable td:first-child{text-align:center;color:#888;font-family:inherit}
table.statc-ztable tr:hover td{background:#f8faff}
.statc-error{background:#fee2e2;border:1px solid #fca5a5;border-radius:9px;padding:12px 16px;margin-top:14px;font-size:13px;color:#991b1b}