/* BedtimeSleepCalculator v15 design layer. Scoped to .v15-* plus light refinements. */
:root{--v-ac:#2563eb;--v-ac2:#7c3aed;--v-ok:#16a34a;--v-wa:#b45309;--v-r:16px;--v-r2:12px}
[data-theme=dark]{--v-card:#13254d;--v-card2:#182d5c;--v-line:rgba(255,255,255,.14);--v-tx:#f1f5f9;--v-mu:#cbd5e1;--v-link:#93c5fd;--v-ok-bg:rgba(34,197,94,.14);--v-ok-tx:#86efac;--v-wa-bg:rgba(245,158,11,.14);--v-wa-tx:#fcd34d;--v-bad-tx:#fca5a5;--v-glow:rgba(96,165,250,.22)}
[data-theme=light]{--v-card:#ffffff;--v-card2:#f1f5f9;--v-line:#d5deea;--v-tx:#0f172a;--v-mu:#334155;--v-link:#1d4ed8;--v-ok-bg:#ecfdf3;--v-ok-tx:#166534;--v-wa-bg:#fffbeb;--v-wa-tx:#92400e;--v-bad-tx:#b91c1c;--v-glow:rgba(37,99,235,.12)}
.ic{width:1.15em;height:1.15em;display:inline-block;vertical-align:-.2em;flex:none}
.ic.lg{width:1.6em;height:1.6em}
.v15-sec{margin:44px 0 0;scroll-margin-top:84px}
.v15-sec>h2,.v15-hd{font-family:var(--fd,system-ui);font-size:clamp(1.3rem,2.2vw + .8rem,1.75rem);line-height:1.25;letter-spacing:-.01em;color:var(--v-tx);margin:0 0 14px;padding-left:14px;border-left:4px solid var(--v-ac);border-radius:2px}
.v15-sec>h3{font-size:1.1rem;color:var(--v-tx);margin:26px 0 8px}
.v15-sec p,.v15-sec li{color:var(--v-mu);font-size:1.02rem;line-height:1.8}
.v15-sec p{margin:0 0 14px}
.v15-sec ul,.v15-sec ol{margin:0 0 16px 1.25rem}
.v15-sec li{margin:0 0 6px}
.v15-sec a,.v15-answer a,.v15-trust a,.v15-hub a.v15-inl{color:var(--v-link);text-decoration:underline;text-underline-offset:3px;text-decoration-thickness:1px}
/* quick answer */
.v15-answer{position:relative;margin:22px 0 10px;padding:18px 20px 18px 20px;background:var(--v-card);border:1px solid var(--v-line);border-radius:var(--v-r);box-shadow:0 10px 30px -18px var(--v-glow)}
.v15-answer::before{content:"";position:absolute;inset:0 auto 0 0;width:5px;border-radius:var(--v-r) 0 0 var(--v-r);background:linear-gradient(180deg,var(--v-ac),var(--v-ac2))}
.v15-answer .lbl{display:flex;align-items:center;gap:8px;font-size:.78rem;font-weight:800;letter-spacing:.08em;text-transform:uppercase;color:var(--v-link);margin-bottom:8px}
.v15-answer p{margin:0 0 8px;font-size:1.06rem;line-height:1.65;color:var(--v-tx)}
.v15-answer p:last-child{margin:0}
.v15-answer strong{color:var(--v-tx)}
.v15-times{display:flex;flex-wrap:wrap;gap:10px;margin:12px 0 4px;padding:0;list-style:none}
.v15-times li{flex:1 1 130px;background:var(--v-card2);border:1px solid var(--v-line);border-radius:var(--v-r2);padding:10px 12px;text-align:center;margin:0}
.v15-times b{display:block;font-family:var(--fd,system-ui);font-size:1.35rem;color:var(--v-tx);line-height:1.2}
.v15-times span{display:block;font-size:.8rem;color:var(--v-mu);margin-top:2px}
.v15-times li.best{border-color:var(--v-ok);background:var(--v-ok-bg)}
.v15-times li.best b{color:var(--v-ok-tx)}
.v15-times li.short{border-color:#d97706;background:var(--v-wa-bg)}
.v15-times li.short b{color:var(--v-wa-tx)}
/* toc */
.v15-toc{margin:14px 0 6px;border:1px solid var(--v-line);border-radius:var(--v-r2);background:var(--v-card)}
.v15-toc summary{cursor:pointer;list-style:none;padding:12px 16px;display:flex;align-items:center;gap:8px;font-weight:700;color:var(--v-tx);font-size:.95rem}
.v15-toc summary::-webkit-details-marker{display:none}
.v15-toc summary::after{content:"";margin-left:auto;width:8px;height:8px;border-right:2px solid var(--v-mu);border-bottom:2px solid var(--v-mu);transform:rotate(45deg);transition:transform .2s}
.v15-toc[open] summary::after{transform:rotate(225deg)}
.v15-toc ol{margin:0;padding:0 16px 14px 38px;columns:2;column-gap:28px}
.v15-toc li{margin:0 0 6px;font-size:.93rem;line-height:1.45;color:var(--v-mu);break-inside:avoid}
.v15-toc a{color:var(--v-link);text-decoration:none}
.v15-toc a:hover,.v15-toc a:focus-visible{text-decoration:underline}
@media(max-width:640px){.v15-toc ol{columns:1}}
/* tables */
.v15-tablewrap{overflow-x:auto;margin:14px 0 18px;border:1px solid var(--v-line);border-radius:var(--v-r2);background:var(--v-card);-webkit-overflow-scrolling:touch}
.v15-table{width:100%;border-collapse:collapse;min-width:480px;font-size:.96rem}
.v15-table caption{text-align:left;padding:12px 14px 4px;font-weight:700;color:var(--v-tx);font-size:.95rem}
.v15-table th{background:var(--v-card2);color:var(--v-tx);text-align:left;font-weight:700;padding:11px 14px;border-bottom:1px solid var(--v-line);font-size:.85rem;letter-spacing:.02em}
.v15-table td{padding:11px 14px;border-bottom:1px solid var(--v-line);color:var(--v-mu);vertical-align:top}
.v15-table td:not(:last-child){white-space:nowrap}
.v15-table td:first-child,.v15-table th:first-child{color:var(--v-tx);font-weight:700}
.v15-table tbody tr:last-child td{border-bottom:0}
.v15-table tr.best td{background:var(--v-ok-bg)}
.v15-table tr.best td:first-child{color:var(--v-ok-tx)}
.v15-table tr.short td{background:var(--v-wa-bg)}
/* callouts */
.v15-callout{margin:18px 0;padding:14px 16px;border:1px solid var(--v-line);border-left:4px solid var(--v-ac);border-radius:var(--v-r2);background:var(--v-card)}
.v15-callout strong{display:block;color:var(--v-tx);margin-bottom:4px}
.v15-callout p{margin:0;color:var(--v-mu)}
.v15-callout.tip{border-left-color:var(--v-ok)}
.v15-callout.warn{border-left-color:#d97706;background:var(--v-wa-bg)}
/* cards */
.v15-cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(200px,1fr));gap:12px;margin:14px 0}
@media(max-width:560px){.v15-cards{grid-template-columns:repeat(2,minmax(0,1fr));gap:8px}.v15-card{padding:10px;gap:8px;flex-direction:column}.v15-card .ico{width:30px;height:30px}.v15-card b{font-size:.88rem}.v15-card small{font-size:.76rem}}
.v15-card{display:flex;gap:12px;align-items:flex-start;padding:14px;border:1px solid var(--v-line);border-radius:var(--v-r2);background:var(--v-card);text-decoration:none!important;transition:transform .18s,border-color .18s,box-shadow .18s}
.v15-card:hover,.v15-card:focus-visible{transform:translateY(-2px);border-color:var(--v-ac);box-shadow:0 12px 26px -16px var(--v-glow)}
.v15-card .ico{flex:none;width:38px;height:38px;border-radius:10px;display:grid;place-items:center;background:var(--v-card2);color:var(--v-link)}
.v15-card b{display:block;color:var(--v-tx);font-size:.96rem;line-height:1.3}
.v15-card small{display:block;color:var(--v-mu);font-size:.82rem;line-height:1.4;margin-top:2px}
/* community questions */
.v15-qa details{border:1px solid var(--v-line);border-radius:var(--v-r2);background:var(--v-card);margin:0 0 10px}
.v15-qa summary{cursor:pointer;list-style:none;padding:14px 16px;font-weight:700;color:var(--v-tx);display:flex;gap:10px;align-items:flex-start;line-height:1.45}
.v15-qa summary::-webkit-details-marker{display:none}
.v15-qa summary::before{content:"+";flex:none;width:22px;height:22px;border-radius:50%;display:grid;place-items:center;background:var(--v-card2);color:var(--v-link);font-weight:800;line-height:1}
.v15-qa details[open] summary::before{content:"\2212"}
.v15-qa .ans{padding:0 16px 14px 48px}
.v15-qa .ans p{margin:0 0 10px;color:var(--v-mu);font-size:1rem;line-height:1.75}
.v15-qa .ans p:last-child{margin:0}
.v15-note{font-size:.85rem;color:var(--v-mu)}
/* trust */
.v15-trust{margin:44px 0 0;padding:18px;border:1px solid var(--v-line);border-radius:var(--v-r);background:var(--v-card)}
.v15-trust h2{font-family:var(--fd,system-ui);font-size:1.15rem;color:var(--v-tx);margin:0 0 10px;display:flex;align-items:center;gap:8px}
.v15-trust p,.v15-trust li{color:var(--v-mu);font-size:.93rem;line-height:1.65}
.v15-trust ul{margin:8px 0 0 1.1rem}
.v15-trust li{margin-bottom:5px}
.v15-meta{display:flex;flex-wrap:wrap;gap:8px 16px;margin:10px 0 0;color:var(--v-mu);font-size:.84rem}
.v15-meta span{display:inline-flex;align-items:center;gap:6px}
/* stat row */
.v15-stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:10px;margin:14px 0}
.v15-stat{padding:14px;border:1px solid var(--v-line);border-radius:var(--v-r2);background:var(--v-card)}
.v15-stat b{display:block;font-family:var(--fd,system-ui);font-size:1.5rem;color:var(--v-tx);line-height:1.15}
.v15-stat span{font-size:.84rem;color:var(--v-mu)}
/* new tools */
.v15-tool{margin:20px 0;padding:20px;border:1px solid var(--v-line);border-radius:var(--v-r);background:var(--v-card);box-shadow:0 18px 40px -28px var(--v-glow)}
.v15-tool label{display:block;font-weight:700;color:var(--v-tx);font-size:.9rem;margin:0 0 6px}
.v15-row{display:grid;grid-template-columns:repeat(auto-fit,minmax(170px,1fr));gap:14px;margin-bottom:14px}
.v15-tool input,.v15-tool select{width:100%;min-height:46px;padding:10px 12px;font-size:1rem;border-radius:10px;border:1px solid var(--v-line);background:var(--v-card2);color:var(--v-tx);font-family:inherit}
.v15-tool input:focus-visible,.v15-tool select:focus-visible,.v15-btn:focus-visible{outline:3px solid var(--v-ac);outline-offset:2px}
.v15-btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:46px;padding:0 22px;border:0;border-radius:12px;background:linear-gradient(135deg,#2563eb,#6d28d9);color:#fff;font-weight:700;font-size:1rem;cursor:pointer;font-family:inherit}
.v15-btn:hover{filter:brightness(1.08)}
.v15-out{margin-top:18px}
.v15-out:empty{display:none}
/* hub footer links block */
.v15-related h2{font-family:var(--fd,system-ui)}
@media print{.v15-toc,.v15-cards,.v15-btn{display:none}}
@media(prefers-reduced-motion:reduce){.v15-card{transition:none}}

.v15-wrap{max-width:820px;margin:0 auto;padding:0 20px;width:100%}
.v15-bc{font-size:.8rem;color:var(--v-mu);padding:14px 0 4px}
.v15-bc a{color:var(--v-link)}
.v15-hero{padding:10px 0 6px}
.v15-hero h1{font-family:var(--fd,system-ui);font-size:clamp(1.9rem,4vw + .8rem,2.8rem);line-height:1.12;letter-spacing:-.02em;color:var(--v-tx);margin:6px 0 10px}
.v15-lede{font-size:1.12rem;line-height:1.65;color:var(--v-mu);max-width:62ch;margin:0 0 14px}
.v15-dl dt{margin:16px 0 2px;color:var(--v-tx);font-size:1.02rem}
.v15-dl dd{margin:0 0 6px;color:var(--v-mu);line-height:1.7}

/* bsct */
.bsct{--wbg:#0d1830;--wsurf:#111f3c;--wtxt:#eef4ff;--wtxt2:rgba(238,244,255,.7);--wblue:#3b82f6;--wgold:#fbbf24;--wbdr:rgba(59,130,246,.25);max-width:640px;margin:26px auto;background:var(--wbg);border:1px solid var(--wbdr);border-radius:18px;padding:24px;font-family:inherit}
html[data-theme="light"] .bsct{--wbg:#ffffff;--wsurf:#f2f6ff;--wtxt:#081231;--wtxt2:rgba(8,18,49,.7);--wbdr:rgba(59,130,246,.3)}
html[data-theme="light"][data-contrast="high"] .bsct{--wbg:#fff;--wsurf:#fff;--wtxt:#000;--wtxt2:#1a1a1a;--wbdr:#3d3d3d}
.bsct h2{color:var(--wtxt);font-size:1.15rem;margin:0 0 16px;padding:0}
.bsct h2::after{display:none}
.bsct label{display:block;color:var(--wtxt2);font-size:.82rem;font-weight:700;margin:14px 0 6px;text-transform:uppercase;letter-spacing:.05em}
.bsct input,.bsct select{width:100%;background:var(--wsurf);color:var(--wtxt);border:1px solid var(--wbdr);border-radius:10px;padding:11px 13px;font-size:1rem;box-sizing:border-box}
.bsct input[type=range]{padding:0;height:32px;accent-color:var(--wblue)}
.bsct .bsct-row{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.bsct .bsct-val{color:var(--wgold);font-weight:800;font-size:.9rem;margin-left:8px}
.bsct button.bsct-go{width:100%;margin-top:20px;background:linear-gradient(135deg,#3b82f6,#2563eb);color:#fff;border:none;border-radius:12px;padding:14px;font-size:1.02rem;font-weight:800;cursor:pointer;transition:transform .18s,box-shadow .18s}
.bsct button.bsct-go:hover{transform:translateY(-2px);box-shadow:0 8px 22px rgba(59,130,246,.4)}
.bsct .bsct-out{display:none;margin-top:20px;border-top:1px solid var(--wbdr);padding-top:18px;color:var(--wtxt)}
.bsct .bsct-out.on{display:block}
.bsct .bsct-chips{display:flex;flex-wrap:wrap;gap:10px;margin:10px 0}
.bsct .bsct-chip{background:var(--wsurf);border:1px solid var(--wbdr);border-radius:12px;padding:12px 16px;text-align:center;min-width:104px}
.bsct .bsct-chip b{display:block;font-size:1.15rem;color:var(--wgold)}
.bsct .bsct-chip span{font-size:.72rem;color:var(--wtxt2)}
.bsct .bsct-note{font-size:.85rem;color:var(--wtxt2);margin-top:10px;line-height:1.6}
.bsct .bsct-big{font-size:1.7rem;font-weight:800;color:var(--wgold);margin:6px 0}
@media(max-width:520px){.bsct{padding:18px}.bsct .bsct-row{grid-template-columns:1fr}}

/* converted stub pages: themed body */
body:has(.v15-wrap){display:block;min-height:0;padding:0;background:#0f1e3d;color:#f1f5f9}
html[data-theme="light"] body:has(.v15-wrap){background:#f8fafc;color:#0f172a}
body:has(.v15-wrap) main#main-content{margin:0 auto;padding:24px 0 8px}

/* v15 polish: night sky article header, stronger tool and results */
body .art-header{position:relative;overflow:hidden;isolation:isolate;padding:30px 26px 26px;margin:6px 0 28px;border:1px solid rgba(147,197,253,.22);border-radius:22px;background:radial-gradient(120px 120px at 92% 18%,rgba(251,191,36,.30),rgba(251,191,36,0) 70%),radial-gradient(1.2px 1.2px at 12% 22%,#fff,transparent 60%),radial-gradient(1px 1px at 28% 68%,rgba(255,255,255,.8),transparent 60%),radial-gradient(1.4px 1.4px at 46% 30%,#fff,transparent 60%),radial-gradient(1px 1px at 63% 78%,rgba(255,255,255,.7),transparent 60%),radial-gradient(1.2px 1.2px at 78% 52%,#fff,transparent 60%),linear-gradient(160deg,#0a1630 0%,#12265a 62%,#1d3a7a 100%);box-shadow:0 26px 50px -34px rgba(10,22,48,.9)}
body .art-header h1{color:#fff;font-size:clamp(1.85rem,3.6vw + .9rem,2.9rem);line-height:1.1;letter-spacing:-.025em;margin:2px 0 12px;max-width:20ch;text-wrap:balance}
body .art-header .art-cat{background:rgba(255,255,255,.1);border-color:rgba(255,255,255,.22);color:#dbeafe!important;font-size:.7rem;letter-spacing:.06em;text-transform:none;font-weight:700;padding:4px 12px}
body .art-header .art-meta{color:#dbeafe!important;font-size:.8rem;margin:0 0 14px}
body .art-header .art-meta strong{color:#fff!important}
body .art-header .art-intro{background:none;border:0;border-radius:0;padding:0;margin:0;max-width:62ch;color:rgba(241,245,249,.92);font-size:1.06rem;line-height:1.7}
body .art-body h2{letter-spacing:-.015em}
body .art-body h2::after{display:none}
body .art-body .v15-sec{margin-top:40px}
body .v15-tool{position:relative;padding:22px;border-radius:20px;overflow:hidden}
body .v15-tool::before{content:"";position:absolute;inset:0 0 auto 0;height:4px;background:linear-gradient(90deg,#2563eb,#6d28d9,#fbbf24)}
body .v15-tool .v15-btn{min-width:180px}
body .v15-out .v15-stats{grid-template-columns:1.4fr 1fr 1fr}
body .v15-out .v15-stat:first-child{background:linear-gradient(150deg,#12265a,#2451a8);border-color:transparent;color:#fff}
body .v15-out .v15-stat:first-child b{font-size:2.1rem;color:#fff}
body .v15-out .v15-stat:first-child span{color:#dbeafe}
body .v15-table thead th{background:var(--v-card2);font-size:.82rem;letter-spacing:.02em}
body .v15-table tbody tr:nth-child(even):not(.best){background:color-mix(in srgb,var(--v-card2) 55%,transparent)}
body .v15-table tr.best td:first-child{box-shadow:inset 4px 0 0 #22c55e}
body .v15-card{border-radius:14px}
@media(max-width:600px){body .art-header{padding:22px 18px 20px;border-radius:18px;margin-top:2px}body .art-header h1{max-width:none}body .v15-out .v15-stats{grid-template-columns:1fr 1fr}body .v15-out .v15-stat:first-child{grid-column:1/-1}body .v15-tool .v15-btn{width:100%}}
@media(max-width:600px){body .v15-table th,body .v15-table td{padding:10px 7px;font-size:.86rem}body .v15-table caption{font-size:.9rem;padding:10px 8px}}
body .v15-hero{position:relative;overflow:hidden;isolation:isolate;padding:28px 26px 24px;margin:8px 0 22px;border:1px solid rgba(147,197,253,.22);border-radius:22px;background:radial-gradient(120px 120px at 92% 20%,rgba(251,191,36,.28),rgba(251,191,36,0) 70%),radial-gradient(1.2px 1.2px at 14% 26%,#fff,transparent 60%),radial-gradient(1.4px 1.4px at 50% 34%,#fff,transparent 60%),radial-gradient(1px 1px at 70% 76%,rgba(255,255,255,.75),transparent 60%),linear-gradient(160deg,#0a1630 0%,#12265a 62%,#1d3a7a 100%)}
body .v15-hero h1{color:#fff;max-width:20ch;text-wrap:balance}
body .v15-hero .v15-lede{color:rgba(241,245,249,.92)}
@media(max-width:600px){body .v15-hero{padding:22px 18px;border-radius:18px}body .v15-hero h1{max-width:none}}