/* EasyCalculators.co.uk — Shared Stylesheet 2025/26 */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
:root{
  --purple:#534AB7;--purple-light:#EEEDFE;--purple-dark:#3C3489;--purple-mid:#AFA9EC;
  --red:#E24B4A;--amber:#EF9F27;--green:#639922;
  --text:#1A1A18;--text-muted:#5F5E5A;--text-faint:#888780;
  --border:rgba(0,0,0,0.1);--border-mid:rgba(0,0,0,0.15);
  --bg:#ffffff;--bg-surface:#F7F6F3;
  --radius:10px;--radius-lg:14px;
}
@media(prefers-color-scheme:dark){
  :root{
    --text:#EEECEA;--text-muted:#A09E99;--text-faint:#6B6966;
    --border:rgba(255,255,255,0.1);--border-mid:rgba(255,255,255,0.15);
    --bg:#1C1C1A;--bg-surface:#242422;
    --purple-light:#26215C;--purple-dark:#CECBF6;--purple-mid:#534AB7;
  }
}
body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",system-ui,sans-serif;background:var(--bg);color:var(--text);font-size:16px;line-height:1.6}
.page{max-width:760px;margin:0 auto;padding:0 16px}

header{border-bottom:1px solid var(--border);background:var(--bg);position:sticky;top:0;z-index:100}
.header-inner{max-width:760px;margin:0 auto;padding:0 16px;display:flex;align-items:center;gap:12px;height:52px}
.site-name{font-size:15px;font-weight:700;color:var(--purple);text-decoration:none;white-space:nowrap;display:flex;align-items:center;gap:6px}
.site-name svg{width:20px;height:20px}
.main-nav{display:flex;gap:2px;overflow-x:auto;scrollbar-width:none;flex:1}
.main-nav::-webkit-scrollbar{display:none}
.main-nav a{font-size:12px;color:var(--text-muted);text-decoration:none;padding:5px 9px;border-radius:6px;white-space:nowrap;transition:all 0.12s}
.main-nav a:hover{background:var(--bg-surface);color:var(--text)}
.main-nav a.active{background:var(--purple-light);color:var(--purple-dark);font-weight:500}

.breadcrumb{padding:14px 0 0;font-size:13px;color:var(--text-faint)}
.breadcrumb a{color:var(--text-muted);text-decoration:none}
.breadcrumb a:hover{color:var(--purple);text-decoration:underline}
.breadcrumb .sep{margin:0 6px;color:var(--text-faint)}

.ad-slot{background:var(--bg-surface);border:1.5px dashed var(--border-mid);border-radius:var(--radius);padding:14px;text-align:center;color:var(--text-faint);font-size:11px;letter-spacing:1.5px;text-transform:uppercase;margin:20px 0}

.hero{padding:24px 0 18px}
.hero h1{font-size:clamp(22px,4vw,32px);font-weight:700;line-height:1.2;margin-bottom:10px}
.hero h1 span{color:var(--purple)}
.hero p{font-size:16px;color:var(--text-muted);max-width:580px;line-height:1.6}
.badges{display:flex;gap:8px;flex-wrap:wrap;margin-top:12px}
.badge{font-size:12px;padding:4px 10px;border-radius:20px;background:var(--purple-light);color:var(--purple-dark);font-weight:500}
.last-updated{font-size:12px;color:var(--text-faint);margin-top:8px}

.card{background:var(--bg);border:1px solid var(--border);border-radius:var(--radius-lg);padding:22px;margin-bottom:14px}

.field{margin-bottom:16px}
.field label{display:block;font-size:11px;font-weight:600;color:var(--text-faint);margin-bottom:6px;text-transform:uppercase;letter-spacing:.5px}
input[type=number],input[type=time],input[type=text],input[type=email],textarea,select{width:100%;padding:10px 13px;border:1px solid var(--border-mid);border-radius:var(--radius);font-size:15px;background:var(--bg);color:var(--text);appearance:none;-webkit-appearance:none;transition:border-color .15s,box-shadow .15s;font-family:inherit}
input:focus,select:focus,textarea:focus{outline:none;border-color:var(--purple);box-shadow:0 0 0 3px rgba(83,74,183,.12)}
textarea{min-height:120px;resize:vertical}
.input-prefix{position:relative}
.input-prefix .sym{position:absolute;left:12px;top:50%;transform:translateY(-50%);color:var(--text-muted);font-size:15px;pointer-events:none}
.input-prefix .sym-r{position:absolute;right:12px;left:auto;top:50%;transform:translateY(-50%);color:var(--text-muted);font-size:14px;pointer-events:none}
.input-prefix input{padding-left:26px}
.input-prefix input.pr{padding-right:30px;padding-left:13px}
.row2{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.row3{display:grid;grid-template-columns:1fr 1fr 1fr;gap:12px}
@media(max-width:520px){.row2,.row3{grid-template-columns:1fr}}

.seg{display:flex;gap:4px}
.seg button{flex:1;padding:9px 4px;border:1px solid var(--border-mid);border-radius:var(--radius);font-size:13px;background:var(--bg-surface);color:var(--text-muted);cursor:pointer;transition:all .12s}
.seg button:hover{background:var(--bg)}
.seg button.on{background:var(--purple);border-color:var(--purple);color:#fff;font-weight:500}

.calc-btn{width:100%;padding:13px;background:var(--purple);border:none;border-radius:var(--radius);color:#fff;font-size:15px;font-weight:600;cursor:pointer;transition:opacity .15s;margin-top:4px}
.calc-btn:hover{opacity:.88}

.results{display:none}
.tab-row{display:flex;gap:4px;margin-bottom:18px}
.tab{flex:1;padding:8px 4px;border:1px solid var(--border-mid);border-radius:var(--radius);font-size:13px;background:transparent;color:var(--text-muted);cursor:pointer;transition:all .12s}
.tab.on{background:var(--bg-surface);color:var(--text);font-weight:500}
.big-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-bottom:18px}
@media(max-width:400px){.big-grid{grid-template-columns:1fr}}
.big-stat{background:var(--bg-surface);border-radius:var(--radius);padding:14px 16px}
.big-stat.accent{background:var(--purple-light);border:1px solid var(--purple-mid)}
.stat-label{font-size:11px;text-transform:uppercase;letter-spacing:1px;color:var(--text-faint);margin-bottom:4px}
.big-stat.accent .stat-label{color:var(--purple)}
.stat-num{font-size:24px;font-weight:700;color:var(--text);line-height:1}
.big-stat.accent .stat-num{color:var(--purple-dark)}
.stat-sub{font-size:12px;color:var(--text-faint);margin-top:3px}
.big-stat.accent .stat-sub{color:var(--purple)}

.bar-head{display:flex;justify-content:space-between;font-size:13px;color:var(--text-muted);margin-bottom:6px}
.bar{height:10px;border-radius:5px;overflow:hidden;display:flex;gap:2px;background:var(--bg-surface)}
.bar-seg{height:100%;transition:width .5s cubic-bezier(.4,0,.2,1);min-width:0}
.legend{display:flex;flex-wrap:wrap;gap:12px;margin-top:10px}
.legend-item{display:flex;align-items:center;gap:6px;font-size:13px;color:var(--text-muted)}
.dot{width:10px;height:10px;border-radius:50%;flex-shrink:0}

.breakdown{width:100%;border-collapse:collapse;font-size:14px}
.breakdown tr{border-bottom:1px solid var(--border)}
.breakdown tr:last-child{border-bottom:none}
.breakdown td{padding:9px 0;color:var(--text-muted)}
.breakdown td:last-child{text-align:right;color:var(--text);font-weight:500;font-variant-numeric:tabular-nums}
.breakdown tr.total td{font-weight:700;color:var(--text);font-size:15px;border-top:2px solid var(--border-mid)}
.breakdown tr.total td:last-child{color:var(--purple)}
.section-title{font-size:15px;font-weight:600;color:var(--text);margin-bottom:12px}

.content-section{padding:8px 0 0}
.content-section h2{font-size:20px;font-weight:700;color:var(--text);margin:30px 0 10px;line-height:1.3}
.content-section h3{font-size:16px;font-weight:600;margin:20px 0 8px}
.content-section p{color:var(--text-muted);margin-bottom:12px;font-size:15px;line-height:1.7}
.content-section ul,.content-section ol{color:var(--text-muted);padding-left:20px;margin-bottom:12px;font-size:15px;line-height:1.9}
.content-section a{color:var(--purple);text-decoration:underline}

.rate-table{width:100%;border-collapse:collapse;font-size:14px;margin:14px 0 22px}
.rate-table th{background:var(--bg-surface);padding:9px 12px;text-align:left;font-size:11px;text-transform:uppercase;letter-spacing:.5px;color:var(--text-faint);border-bottom:1px solid var(--border-mid)}
.rate-table td{padding:9px 12px;border-bottom:1px solid var(--border);color:var(--text-muted)}
.rate-table td.num{text-align:right;font-weight:500;color:var(--text);font-variant-numeric:tabular-nums}
.rate-table tr.hi td{background:var(--purple-light);color:var(--purple-dark);font-weight:500}

.faq-item{border-top:1px solid var(--border);padding:14px 0}
.faq-q{font-size:15px;font-weight:600;color:var(--text);cursor:pointer;display:flex;justify-content:space-between;align-items:flex-start;gap:12px}
.faq-q::after{content:"+";font-size:20px;color:var(--text-faint);flex-shrink:0;transition:transform .2s;line-height:1.1}
.faq-item.open .faq-q::after{transform:rotate(45deg)}
.faq-a{color:var(--text-muted);font-size:14px;line-height:1.7;display:none;margin-top:10px}
.faq-item.open .faq-a{display:block}

.disclaimer-box{background:var(--bg-surface);border-radius:var(--radius);border-left:3px solid var(--purple-mid);padding:12px 14px;margin:16px 0;font-size:13px;color:var(--text-muted);line-height:1.6}

.sources-box{background:var(--bg-surface);border-radius:var(--radius);padding:14px 16px;margin:20px 0;font-size:13px;color:var(--text-muted);line-height:1.7}
.sources-box strong{color:var(--text);display:block;margin-bottom:6px;font-size:13px}
.sources-box ul{margin:0;padding-left:18px;font-size:13px;line-height:1.8}
.sources-box a{color:var(--purple);word-break:break-word}

.calc-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(210px,1fr));gap:14px;margin:24px 0}
.calc-card{background:var(--bg);border:1px solid var(--border);border-radius:var(--radius-lg);padding:20px;text-decoration:none;transition:all .15s;display:block;color:inherit}
.calc-card:hover{border-color:var(--purple-mid);box-shadow:0 2px 14px rgba(83,74,183,.12);transform:translateY(-1px)}
.calc-card-icon{font-size:28px;margin-bottom:10px}
.calc-card-title{font-size:15px;font-weight:600;color:var(--text);margin-bottom:4px}
.calc-card-desc{font-size:13px;color:var(--text-muted);line-height:1.4}

.sleep-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(140px,1fr));gap:10px;margin-top:4px}
.sleep-card{background:var(--bg-surface);border-radius:var(--radius);padding:14px;text-align:center;border:1px solid transparent}
.sleep-card.best{background:var(--purple-light);border-color:var(--purple-mid)}
.sleep-time{font-size:22px;font-weight:700;color:var(--text)}
.sleep-card.best .sleep-time{color:var(--purple-dark)}
.sleep-cycles{font-size:12px;color:var(--text-faint);margin-top:4px}
.sleep-card.best .sleep-cycles{color:var(--purple)}

.mode-result{background:var(--purple-light);border:1px solid var(--purple-mid);border-radius:var(--radius-lg);padding:22px;text-align:center;margin-bottom:14px;display:none}
.mode-result-num{font-size:48px;font-weight:700;color:var(--purple-dark);line-height:1}
.mode-result-label{font-size:14px;color:var(--purple);margin-top:10px}
.mode-card{display:none}
.mode-card.active{display:block}

.error-page{text-align:center;padding:60px 0}
.error-page h1{font-size:96px;font-weight:700;color:var(--purple);line-height:1;margin-bottom:16px}
.error-page h2{font-size:24px;font-weight:600;margin-bottom:12px}
.error-page p{color:var(--text-muted);margin-bottom:24px;font-size:16px}

footer{border-top:1px solid var(--border);margin-top:48px;padding:22px 0}
.footer-inner{max-width:760px;margin:0 auto;padding:0 16px;font-size:13px;color:var(--text-faint);line-height:1.7}
.footer-cols{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:18px;margin-bottom:18px}
.footer-col h4{font-size:12px;font-weight:600;color:var(--text);margin-bottom:8px;text-transform:uppercase;letter-spacing:.5px}
.footer-col a{display:block;color:var(--text-muted);text-decoration:none;margin-bottom:4px;font-size:13px}
.footer-col a:hover{color:var(--purple)}
.footer-meta{padding-top:14px;border-top:1px solid var(--border);font-size:12px}