/* EFO Calculator — matches Fatigue Checker design for 'How' and 'Tools' sections */
*{box-sizing:border-box;margin:0;padding:0}
:root{
  --bg:#EEF3FF; --card:#fff; --ink:#101828; --muted:#667085;
  --primary:#3B82F6; --primary-contrast:#fff; --border:#E5E7EB;
  --shadow:0 10px 25px -12px rgba(16,24,40,.15);
  --radius:14px; --radius-sm:10px; --space:clamp(16px,2.5vw,24px);
}
html,body{height:100%;font-family:Inter,ui-sans-serif,system-ui,-apple-system,'Segoe UI',Roboto,'Helvetica Neue',Arial;color:var(--ink);background:var(--bg);line-height:1.55}
.email-calculator{max-width:1100px;margin:0 auto;padding:calc(var(--space)*1.5) var(--space)}
.calculator-header{text-align:center;display:flex;flex-direction:column;align-items:center;margin-bottom:calc(var(--space) * 1.25)}
.calculator-icon{width:56px;height:56px;margin:0 auto 10px;display:grid;place-items:center;border-radius:50%;color:var(--primary-contrast);background:var(--primary)}
.calculator-title{font-size:clamp(26px,2.8vw,36px);font-weight:800;letter-spacing:.2px;margin-bottom:6px}
.calculator-subtitle{text-align:center;color:var(--muted);max-width:760px;margin:0 auto}
.calculator-card{background:var(--card);border:1px solid var(--border);border-radius:var(--radius);padding:calc(var(--space)*1.1);margin-top:var(--space);box-shadow:var(--shadow)}
.validation-banner{display:flex;gap:8px;align-items:flex-start;background:#F7F9FF;border:1px solid #E5E7EE;border-radius:12px;padding:12px 14px;margin-bottom:18px;font-size:14px}
.validation-banner.warn{background:#FFF7ED;border-color:#FED7AA}
.validation-banner strong{font-weight:800;margin-right:4px}
.form-group{margin-bottom:20px}
.form-group.full-line{margin-top:18px}
.after-sensitivity{margin-top:8px}
.form-label{display:block;font-size:14px;font-weight:700;margin-bottom:8px}
.text-input, select{width:100%;padding:12px 12px;border:1px solid var(--border);border-radius:10px;background:#fff}
.text-input:focus, select:focus{outline:2px solid #DBEAFE;border-color:#93C5FD}
.grid-2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}
.grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}
.roomy{margin-top:6px}
.info{display:inline-flex;align-items:center;justify-content:center;width:18px;height:18px;margin-left:6px;border-radius:50%;font-size:12px;font-weight:800;color:#1D4ED8;background:#E8F0FF;cursor:default;position:relative}
.info::after{content:attr(data-tip);position:absolute;left:50%;transform:translateX(-50%) translateY(6px);min-width:240px;max-width:420px;padding:10px 12px;border-radius:10px;background:#111;color:#fff;font-size:12px;line-height:1.45;box-shadow:var(--shadow);opacity:0;pointer-events:none;transition:opacity .15s ease, transform .15s ease;white-space:pre-line;z-index:20}
.info:hover::after{opacity:1;transform:translateX(-50%) translateY(10px)}

/* slider */
.slider-row{display:flex;align-items:center;gap:10px}
.range{appearance:none;width:100%;height:6px;border-radius:8px;outline:none;background:linear-gradient(var(--primary),var(--primary)) 0/var(--percent) 100% no-repeat,#E5E7EB}
.range.wide{height:8px}
.range::-webkit-slider-thumb{appearance:none;width:22px;height:22px;border-radius:50%;background:#fff;border:3px solid var(--primary);box-shadow:var(--shadow);cursor:pointer}
.range::-moz-range-thumb{width:20px;height:20px;border-radius:50%;background:#fff;border:3px solid var(--primary);box-shadow:var(--shadow);cursor:pointer}
.value-badge{min-width:92px;text-align:center;font-weight:800;color:#1F2937;background:#F3F4F6;border:1px solid #E5E7EB;border-radius:9999px;padding:6px 10px}
.num-sync{display:flex;align-items:center;gap:12px;margin-top:8px}
.num-sync-hint{color:var(--muted)}

/* radio */
.radio-group{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px}
.radio-group.wide.two{grid-template-columns:repeat(2,minmax(0,1fr))}
.radio-pill{display:flex;gap:10px;align-items:center;padding:12px 14px;border:1px solid var(--border);border-radius:12px;background:#fff;cursor:pointer;user-select:none}
.radio-pill input{appearance:none;width:18px;height:18px;border:2px solid var(--border);border-radius:50%;position:relative}
.radio-pill input:checked{border-color:var(--primary)}
.radio-pill input:checked::after{content:'';position:absolute;inset:4px;background:var(--primary);border-radius:50%}
.radio-pill span{display:flex;flex-direction:column}
.radio-pill strong{font-size:14px}
.radio-pill small{color:var(--muted);font-size:12px}

/* advanced range block */
.range-wrap{padding:10px 8px 2px;border:1px solid var(--border);border-radius:var(--radius-sm);background:#fff}
.range-labels{display:flex;justify-content:space-between;color:var(--muted);font-size:12px;margin-top:6px}
.range-readout{margin-top:8px;color:#1F2937}

/* buttons */
.calculate-btn{margin-top:10px;width:100%;display:inline-flex;align-items:center;justify-content:center;gap:10px;padding:14px 16px;border:none;border-radius:var(--radius-sm);background:var(--primary);color:var(--primary-contrast);font-weight:700;font-size:16px;cursor:pointer;box-shadow:var(--shadow);transition:transform .06s ease,filter .2s ease}
.calculate-btn:hover{filter:brightness(1.05)}
.calculate-btn:active{transform:translateY(1px)}

/* results */
.results-section{margin-top:calc(var(--space)*1.1)}
.results-section.hidden{display:none}
.results-header{display:flex;gap:10px;align-items:center;justify-content:space-between;flex-wrap:wrap;margin-bottom:8px}
.results-title{font-size:22px;font-weight:800}
.sort-hint{color:var(--muted);font-size:13px}
.summary-card{background:#fff;border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow);padding:16px}
.rec-pretty{background:linear-gradient(180deg,#F8FAFF 0%,#FFFFFF 45%)}
.summary-top{display:grid;grid-template-columns:1fr auto;gap:16px;align-items:center}
.rec-badge{display:inline-block;background:#E8F0FF;color:#1D4ED8;font-weight:800;padding:8px 12px;border-radius:9999px;font-size:12px;letter-spacing:.3px}
.rec-title{font-size:28px;font-weight:800;margin-top:6px}
.rec-subtitle{color:var(--muted);margin-top:4px;font-size:15px}
.recommendation{display:flex;flex-direction:column;gap:2px}
.confidence{display:flex;flex-direction:column;align-items:center;gap:6px}
.gauge{--pct:80;width:96px;height:96px;border-radius:50%;background:conic-gradient(var(--primary) calc(var(--pct)*1%), #E5E7EB 0);display:grid;place-items:center;color:#111;box-shadow:inset 0 0 0 10px #fff, var(--shadow)}
.gauge span{font-weight:800;font-size:20px}
.gauge-caption{font-size:12px;color:var(--muted)}
.metric-chips{display:flex;flex-wrap:wrap;gap:10px;margin:14px 0 6px}
.chip{display:flex;align-items:center;gap:8px;padding:8px 12px;background:#F1F5FF;border:1px solid #E4E9FF;border-radius:9999px;font-size:13px}
.chip strong{font-size:14px}

/* panels */
.summary-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;margin-top:12px}
.panel{background:#F9FAFB;border:1px solid #EEF0F3;border-radius:12px;padding:12px}
.panel h4{font-size:14px;font-weight:800;margin-bottom:8px}
.panel h5{font-size:12px;font-weight:800;margin-top:10px;margin-bottom:6px}
.reason-list,.signal-list,.checklist,.tip-list{display:grid;gap:8px;padding-left:18px}

/* chart */
.chart-wrap{position:relative;width:100%;height:260px;border:1px dashed #E5E7EE;border-radius:12px;background:#fff;display:block;overflow:hidden;padding:6px}
#chart{width:100%;height:100%}
.chart-tip{position:absolute;pointer-events:none;background:#111;color:#fff;font-size:12px;padding:6px 8px;border-radius:8px;opacity:0;transform:translate(-50%,-120%);white-space:nowrap}
.chart-legend{margin-top:8px;color:var(--muted);font-size:12px;display:flex;align-items:center;gap:6px}
.dot{width:8px;height:8px;border-radius:50%;background:var(--primary);display:inline-block}

/* table */
.table-scroll{overflow:auto;max-height:320px;background:#fff;border:1px solid #EEF0F3;border-radius:10px}
#detail-table{width:100%;border-collapse:collapse;font-size:13px}
#detail-table th,#detail-table td{padding:8px 10px;border-bottom:1px solid #F1F3F6;text-align:right}
#detail-table th:first-child,#detail-table td:first-child{text-align:left}
.secondary{background:#F7F9FF;border:1px dashed #E5E7EE}

/* tips panel */
.tip-panel{background:#F0FDF4;border:1px solid #DCFCE7}
.tip-panel a{color:#065F46;text-decoration:underline}
.tip-links{margin-top:8px;font-size:12px}
.summary-actions{display:flex;gap:10px;justify-content:flex-end;margin-top:12px}
.ghost-btn{background:#fff;border:1px solid var(--border);border-radius:10px;padding:10px 14px;font-weight:700;cursor:pointer;display:inline-flex;align-items:center;gap:8px}
.ghost-btn.alt{background:#F7F9FF}

/* How it works + Tools sections (matched to Fatigue Checker) */
.how-section,.tools-section{margin-top:24px}
.how-wrap{max-width:1100px;margin:0 auto;background:#fff;border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow);padding:16px}
.how-wrap h2{font-size:20px;font-weight:800;margin-bottom:8px}
.how-wrap h3{font-size:16px;font-weight:800;margin-top:14px;margin-bottom:6px;color:#111}
.how-wrap p{margin:6px 0;color:#111}
.how-list{margin-left:18px;display:grid;gap:6px;color:#667085}
.tool-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px;margin-top:8px}
.tool-card{display:flex;flex-direction:column;gap:8px;background:#fff;border:1px solid #E5E7EB;border-radius:12px;padding:12px;text-decoration:none;color:inherit;transition:transform .08s ease,box-shadow .18s ease,border-color .18s ease}
.tool-card:hover{transform:translateY(-1px);box-shadow:var(--shadow);border-color:#E0E5EC}
.tool-emoji{font-size:22px}
.tool-card h4{font-size:14px;font-weight:800}
.tool-card p{font-size:13px;color:#667085}
.tool-cta{margin-top:auto;font-weight:800;color:#1D4ED8}

/* responsive */
@media (max-width:980px){
  .grid-3{grid-template-columns:repeat(2,minmax(0,1fr))}
  .tool-grid{grid-template-columns:repeat(3,minmax(0,1fr))}
}
@media (max-width:760px){
  .grid-2,.grid-3{grid-template-columns:1fr}
  .summary-grid{grid-template-columns:1fr}
  .summary-top{grid-template-columns:1fr;justify-items:center;text-align:center}
  .recommendation{align-items:center}
  .gauge{width:84px;height:84px}
  .tool-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media (max-width:540px){
  .tool-grid{grid-template-columns:1fr}
}