/* Sleep Toolbox, mysleeptoolbox.com. Shares its system with the sister sites.
   Started from mythoughtrecord.com on October 10, 2026. brand.css, loaded
   next, sets the family colors, fonts, header, and footer. */
:root{
  --teal:#19536b;--teal-deep:#0d3646;--sea:#19536b;--sea-tint:#eef1f2;
  --ink:#0d3646;--ink-soft:#486470;--rule:#d0d8dc;
  --sand:#fdfcf7;--sand-deep:#f4f2ea;--cream:#fdfcf7;
  --max:72rem;--read:44rem;
  --serif:Literata,Georgia,"Times New Roman",serif;
  --sans:"Source Sans 3",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Arial,sans-serif;
}
@media (prefers-color-scheme:dark){
  :root:not([data-theme=light]){--teal:#90c0d5;--teal-deep:#0c2632;--sea:#90c0d5;--sea-tint:#16394a;--ink:#fdfcf7;--ink-soft:#c3d3da;--rule:#2a5a70;--sand:#0c2632;--sand-deep:#1b4455;--cream:#16394a;}
}
:root[data-theme=dark]{--teal:#90c0d5;--teal-deep:#0c2632;--sea:#90c0d5;--sea-tint:#16394a;--ink:#fdfcf7;--ink-soft:#c3d3da;--rule:#2a5a70;--sand:#0c2632;--sand-deep:#1b4455;--cream:#16394a;}
*{box-sizing:border-box}
[hidden]{display:none!important}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--sand);color:var(--ink);font-family:var(--sans);font-size:1.125rem;line-height:1.6;overflow-wrap:break-word}
a{color:var(--sea);text-underline-offset:.15em}
a:hover{color:var(--ink)}
h1,h2,h3,h4{font-family:var(--serif);font-weight:500;line-height:1.15;margin:0 0 .5em;color:var(--ink)}
h1{font-size:clamp(2.375rem,5vw,4.375rem)}
h2{font-size:clamp(1.75rem,3vw,2.375rem);margin-top:2.2em}
h3{font-size:1.3rem;margin-top:1.6em}
p,ul,ol{margin:0 0 1.1em}
li{margin:.3em 0}
strong{font-weight:600}
hr{border:0;border-top:1px solid var(--rule);margin:2.5rem 0}
.wrap{max-width:var(--max);margin:0 auto;padding:0 1.25rem}
.read>*{max-width:46rem}
.read>.hero{max-width:none}
.skip-link{position:absolute;left:-999px;top:0;background:var(--cream);color:var(--ink);padding:.6rem 1rem;border:2px solid var(--sea);border-radius:0 0 8px 8px;font-weight:600}
.skip-link:focus{left:1rem;z-index:20}
:focus-visible{outline:2px solid var(--sea);outline-offset:2px}
a:focus-visible,summary:focus-visible{border-radius:3px}
.btn:focus-visible,.choice input:focus-visible+span{outline-offset:3px}
main:focus{outline:none}

/* page openings */
.hero{padding:3.5rem 0 2.5rem}
.hero h1{max-width:18ch}
.hero .lede{font-size:1.25rem;max-width:36rem;color:var(--ink-soft)}
.btn{display:inline-block;padding:.75rem 1.2rem;border-radius:10px;text-decoration:none;border:1.5px solid var(--teal);color:var(--teal);background:transparent;font:inherit;font-weight:600;cursor:pointer;line-height:1.3}
.btn.primary{background:var(--teal);color:var(--sand)}
.btn.primary:hover{background:var(--teal-deep);color:var(--sand)}
.btn[disabled]{opacity:.45;cursor:not-allowed}
.note{font-size:.95rem;color:var(--ink-soft)}
.meta{color:var(--ink-soft);font-size:.95rem}
.kicker{font-size:.8rem;color:var(--ink-soft);font-weight:600;letter-spacing:.08em;text-transform:uppercase;margin-bottom:.4rem}
.linkbtn{font:inherit;font-weight:600;color:var(--sea);background:none;border:0;padding:.35rem 0;cursor:pointer;text-decoration:underline;text-underline-offset:.2em;text-align:left}
.linkbtn:hover{color:var(--ink)}
.linkbtn.warn{color:var(--brick)}

/* sections */
.section{padding:2.5rem 0}
.section.tint{background:var(--sand-deep)}
.section.deep{background:var(--petrol);color:var(--paper)}
.section.deep h2,.section.deep h3,.section.deep a{color:var(--paper)}
.section.deep p{color:var(--mist)}
.two{display:grid;grid-template-columns:1fr 1fr;gap:2.5rem;align-items:start}
@media (max-width:820px){.two{grid-template-columns:1fr}}

/* numbered steps, small petrol circles with paper numerals */
.steps{counter-reset:step;list-style:none;padding:0;margin:0}
.steps>li{counter-increment:step;position:relative;padding-left:3rem;margin:0 0 1.5rem}
.steps>li::before{content:counter(step);position:absolute;left:0;top:.1rem;width:2rem;height:2rem;border-radius:50%;background:var(--teal);color:var(--sand);font:600 .95rem/2rem var(--sans);text-align:center}
.steps>li>h2{font-size:1.4rem;line-height:1.25;margin:0 0 .35rem}
@media (prefers-color-scheme:dark){:root:not([data-theme=light]) .steps>li::before{color:#0c2632}}
:root[data-theme=dark] .steps>li::before{color:#0c2632}

/* articles */
.article h2{font-size:1.6rem}
.refs{list-style:none;padding:0;font-size:.95rem}
.refs li{padding-left:2rem;text-indent:-2rem;margin:.6em 0;color:var(--ink-soft)}
.refs li a{word-break:break-all}
.article-list{list-style:none;padding:0;margin:0 0 1rem}
.article-list li{border-top:1px solid var(--rule);padding:1.1rem 0;margin:0}
.article-list li:last-child{border-bottom:1px solid var(--rule)}
.article-list a{font-family:var(--serif);font-size:1.3rem;text-decoration:none;color:var(--ink)}
.article-list a:hover{color:var(--sea);text-decoration:underline}
.article-list p{margin:.25rem 0 0;color:var(--ink-soft)}
.crumbs{font-size:.95rem;color:var(--ink-soft);margin:0 0 1.5rem}
.crumbs a{color:var(--ink-soft)}
.next-read{margin:2rem 0 0;padding:1.1rem 0 0;border-top:1px solid var(--rule)}
.next-read .kicker{display:block;margin:0 0 .2rem}
.next-read>a{font-family:var(--serif);font-size:1.25rem;font-weight:500;text-decoration:none}
.next-read .meta{display:block;margin-top:.2rem}
.plain-list{padding-left:1.2rem}

/* open and close rows */
details{border-top:1px solid var(--rule);padding:.6rem 0}
details:last-of-type{border-bottom:1px solid var(--rule)}
summary{cursor:pointer;font-weight:600;padding:.4rem 0;list-style:none}
summary::-webkit-details-marker{display:none}
summary::before{content:"+";display:inline-block;width:1.4rem;color:var(--sea);font-weight:700}
details[open] summary::before{content:"\2212"}
details>:not(summary){margin-left:1.4rem}

/* downloads */
.downloads{list-style:none;padding:0;margin:0 0 1.5rem}
.downloads>li{border-top:1px solid var(--rule);padding:1rem 0;margin:0}
.downloads>li:last-child{border-bottom:1px solid var(--rule)}
.downloads h3{margin:0 0 .2rem;font-size:1.25rem}
.downloads p{margin:0 0 .45rem;color:var(--ink-soft)}
.dl-links{display:flex;flex-wrap:wrap;gap:.3rem 1.2rem;margin:0;padding:0;list-style:none}
.dl-links li{margin:0}
.dl-links a{font-weight:600}
.dl-soon{color:var(--ink-soft);font-style:italic}
.chip{display:inline-block;border:1.5px solid var(--rule);border-radius:9px;padding:.05rem .55rem;font-size:.85rem;font-weight:600;color:var(--ink-soft);margin-left:.4rem;vertical-align:.12em}

.section h2:first-child,.section .kicker+h2{margin-top:0}
blockquote.quiet{margin:0 0 1.1em;padding:0}
.checkline{display:inline-flex;align-items:center;gap:.6rem;font-weight:600;cursor:pointer}
.checkline input{width:1.2rem;height:1.2rem;accent-color:var(--teal)}

/* forms */
.form-row{margin:0 0 1.6rem}
.form-row>label,.q{display:block;font-weight:600;margin:0 0 .4rem;line-height:1.35}
.cap{display:block;font-size:.95rem;color:var(--ink-soft);margin:-.15rem 0 .5rem;font-weight:400}
input[type=time],input[type=number],input[type=text],input[type=date],textarea,select.field{font:inherit;color:var(--ink);background:var(--cream);border:1px solid var(--ink-soft);border-radius:8px;padding:.55rem .7rem;min-height:2.9rem}
input[type=time]{min-width:9.5rem}
input[type=number]{width:7rem}
textarea{width:100%;min-height:6rem;resize:vertical}
input[type=text]{width:100%}
.unit{margin-left:.5rem;color:var(--ink-soft)}
.choices{display:flex;flex-wrap:wrap;gap:.5rem;margin:0;padding:0;border:0}
.choices.form-row{margin-bottom:1.6rem}
#endingLabel{margin-top:1.4rem}
.choices legend{font-weight:600;margin:0 0 .45rem;padding:0;line-height:1.35}
.choice{position:relative;display:inline-flex}
.choice input{position:absolute;opacity:0;width:1px;height:1px}
.choice span{display:inline-block;border:1.5px solid var(--ink-soft);border-radius:9px;padding:.45rem .85rem;cursor:pointer;background:transparent;color:var(--ink);font-size:1rem;line-height:1.3}
.choice input:checked+span{background:var(--teal);border-color:var(--teal);color:var(--sand)}
.choice input:focus-visible+span{outline:2px solid var(--sea)}
@media (prefers-color-scheme:dark){:root:not([data-theme=light]) .choice input:checked+span{color:#0c2632}}
:root[data-theme=dark] .choice input:checked+span{color:#0c2632}
fieldset.choices{min-width:0}
.sub{margin:.9rem 0 0}
.opt{font-size:.95rem;font-weight:400;color:var(--ink-soft);margin-left:.5rem}
.toolbar{display:flex;gap:.8rem 1.4rem;flex-wrap:wrap;align-items:center;margin:1.5rem 0}
.status{font-size:.95rem;color:var(--ink-soft);min-height:1.5em}

/* the tools */
.tool-section{border-top:1px solid var(--rule);padding-top:1.6rem;margin-top:2.2rem}
.tool-section>h2{margin-top:0;font-size:1.6rem}
.numbers{margin:0 0 .5rem;padding:0}
.numbers div{display:flex;justify-content:space-between;gap:1rem;border-bottom:1px solid var(--rule);padding:.6rem 0}
.numbers div:first-child{border-top:1px solid var(--rule)}
.numbers dt{margin:0}
.numbers dd{margin:0;font-family:var(--serif);font-weight:500;font-size:1.25rem;font-variant-numeric:lining-nums tabular-nums}
.big{font-family:var(--serif);font-weight:500;font-size:clamp(1.6rem,4vw,2.2rem);line-height:1.2;margin:.2rem 0 .6rem}
.ruled{list-style:none;padding:0;margin:0 0 1rem}
.ruled li{border-top:1px solid var(--rule);padding:.7rem 0;margin:0}
.ruled li:last-child{border-bottom:1px solid var(--rule)}
.crisis{margin:1rem 0;padding:1rem 0;border-top:1px solid var(--rule);border-bottom:1px solid var(--rule)}
.crisis p{margin:0 0 .5rem}
.crisis p:last-child{margin:0}
.nights{width:100%;border-collapse:collapse;font-size:1rem;font-variant-numeric:lining-nums tabular-nums}
.nights th{text-align:left;font-weight:600;color:var(--ink-soft);font-size:.9rem;padding:.4rem .6rem .4rem 0;border-bottom:1px solid var(--rule)}
.nights td{padding:.6rem .6rem .6rem 0;border-bottom:1px solid var(--rule);vertical-align:top}
.nights td.act{white-space:nowrap;text-align:right}
.nights td.act .linkbtn{margin-left:.8rem}
.table-scroll{overflow-x:auto}
@media (max-width:620px){
  .nights thead{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0)}
  .nights tr{display:grid;grid-template-columns:1fr auto;gap:.1rem 1rem;border-bottom:1px solid var(--rule);padding:.6rem 0}
  .nights td{border:0;padding:0}
  .nights td:first-child{grid-column:1/-1;font-weight:600}
  .nights td.act{grid-column:1/-1;text-align:left}
  .nights td.act .linkbtn{margin:0 1.2rem 0 0}
  .nights td[data-l]::before{content:attr(data-l) " ";color:var(--ink-soft)}
}
.history li b{display:block;font-size:.9rem;color:var(--ink-soft);font-weight:600}

.hm{gap:.5rem 1.2rem}
.hm-part{display:inline-flex;align-items:center;gap:.45rem;font-weight:400}
.hm-part input{width:5.5rem}
.links{list-style:none;padding:0}
.links li{margin:.1rem 0}

/* print: only the generated report prints */
.printout{display:none}
@media print{
  .site-top,.foot,main>*:not(.printout),.skip-link{display:none!important}
  .printout{display:block!important}
  main{padding:0!important}
  body{background:transparent}
  @page{size:Letter;margin:.5in}
}