/* iarna-vitaminei-d: warm paper by day, winter night in the dark theme */
:root{
  --bg:#f5efe3; --bg2:#ece4d3; --surface:#fbf8f1; --ink:#1b1a24; --ink2:#3f3c4b; --muted:#4f4b5b; --line:#d4c9b4; --line-soft:#e3dac8;
  --acc:#8a3d12; --acc-ink:#7a3410; --sun:#e2962e; --winter:#2b3566; --clear:#5c6b9c; --track:#e0d6c3; --yr:#3a4680; --yr-last:#b2471a;
  --tip-bg:#1d1c27; --tip-ink:#f6f1e6; --focus:#1f4fd1; --plate:#fbf8f1;
  --disp:"Fraunces",Georgia,serif; --serif:"Source Serif 4",Georgia,serif; --ui:"Atkinson Next","Atkinson Hyperlegible Next",system-ui,"Segoe UI",sans-serif;
  --vh:1vh; color-scheme:light;
}
html.dark{
  --bg:#0f1222; --bg2:#151a2e; --surface:#171c31; --ink:#f2ecdf; --ink2:#d9d2c3; --muted:#c4bdae; --line:#343b58; --line-soft:#262c45;
  --acc:#f2b25c; --acc-ink:#f5bf73; --sun:#f0a640; --winter:#c8d2ff; --clear:#8ea0dd; --track:#262d48; --yr:#a9b6f2; --yr-last:#f39a5f;
  --tip-bg:#f2ecdf; --tip-ink:#14172a; --focus:#9db8ff; --plate:#141933; color-scheme:dark;
}
*{box-sizing:border-box}
[hidden]{display:none!important}
svg[hidden]{display:none}
html{-webkit-text-size-adjust:100%;scroll-padding-top:64px}
body{margin:0;background:var(--bg);color:var(--ink);font:400 1.125rem/1.62 var(--serif);font-optical-sizing:auto;text-rendering:optimizeLegibility}
a{color:var(--acc-ink);text-underline-offset:.18em;text-decoration-thickness:1px}
a:hover{text-decoration-thickness:2px}
:focus-visible{outline:3px solid var(--focus);outline-offset:2px;border-radius:4px}
.skip{position:absolute;left:-9999px;top:0;background:var(--ink);color:var(--bg);padding:.5rem 1rem;z-index:50}
.skip:focus{left:8px;top:8px}
h1,h2,h3{font-family:var(--disp);font-weight:560;letter-spacing:-.01em;line-height:1.14;margin:0 0 .6em}
h1{font-size:clamp(2rem,3.6vw + .8rem,3.35rem);font-variation-settings:"opsz" 120;font-weight:520;text-wrap:balance}
h2{font-size:clamp(1.55rem,1.6vw + 1rem,2.15rem);font-variation-settings:"opsz" 72;margin-top:.2em;text-wrap:balance;position:relative}
h3{font-size:1.25rem;margin-top:1.8em}
p{margin:0 0 1em}
.anchor{position:absolute;left:-1.1em;opacity:0;text-decoration:none;color:var(--muted);font-weight:400}
h2:hover .anchor,.anchor:focus{opacity:1}
.kicker{font:600 .82rem/1.3 var(--ui);letter-spacing:.07em;text-transform:uppercase;color:var(--acc-ink);margin:0 0 1rem}
.note{font:400 .9rem/1.5 var(--ui);color:var(--muted)}
.lead{font-size:1.2rem}

/* topbar */
.topbar{position:sticky;top:0;z-index:30;display:flex;align-items:center;gap:.9rem;height:48px;padding:0 max(16px,env(safe-area-inset-left));background:color-mix(in srgb,var(--bg) 92%,transparent);border-bottom:1px solid var(--line-soft);font:500 .9rem/1 var(--ui)}
.home{display:flex;align-items:center;gap:.45rem;color:var(--ink);text-decoration:none;white-space:nowrap}
.home .motif{width:22px;height:22px;color:var(--ink)}
.topnav{display:flex;gap:1rem;overflow:hidden;min-width:0}
.topnav a{color:var(--ink2);text-decoration:none;white-space:nowrap}
.topnav a:hover{color:var(--ink);text-decoration:underline}
.spacer{flex:1}
.chip{color:var(--ink);text-decoration:none;border:1px solid var(--line);border-radius:999px;padding:.38rem .7rem}
.icon-btn{display:grid;place-items:center;width:36px;height:36px;border-radius:50%;border:1px solid var(--line);background:transparent;color:var(--ink);cursor:pointer}
.progress{position:absolute;left:0;right:0;bottom:-1px;height:2px}
.progress i{display:block;height:100%;width:100%;background:var(--sun);transform-origin:0 50%;transform:scaleX(0)}
@media (max-width:860px){.topnav{display:none}}

/* rail */
.rail{position:fixed;right:10px;top:50%;transform:translateY(-50%);z-index:20;display:flex;flex-direction:column;gap:10px}
.rail-dot{position:relative;display:block;width:14px;height:14px}
.rail-dot .dot{position:absolute;inset:4px;border-radius:50%;background:var(--line)}
.rail-dot[aria-current] .dot{background:var(--acc);inset:2px}
.rail-label{position:absolute;right:22px;top:50%;transform:translateY(-50%);white-space:nowrap;font:500 .8rem/1 var(--ui);background:var(--tip-bg);color:var(--tip-ink);padding:.35rem .5rem;border-radius:4px;opacity:0;pointer-events:none}
.rail-dot:hover .rail-label,.rail-dot:focus .rail-label{opacity:1}
@media (max-width:1180px){.rail{display:none}}

/* hero */
.hero{padding:clamp(1.4rem,3vw,3rem) 16px 2rem;background:radial-gradient(120% 80% at 85% 10%,color-mix(in srgb,var(--sun) 13%,transparent),transparent 60%)}
.hero-grid{max-width:1240px;margin:0 auto;display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.08fr);gap:clamp(1.5rem,3.5vw,3.5rem);align-items:start}
.deck{font-size:1.2rem;line-height:1.55;color:var(--ink2);max-width:36em}
.search{margin:1.4rem 0 .6rem;max-width:30rem}
.slab{display:block;font:600 .95rem/1.3 var(--ui);margin-bottom:.4rem}
.combo{position:relative}
#q{width:100%;font:500 1.12rem/1.2 var(--ui);padding:.85rem 1rem;border-radius:12px;border:1.5px solid var(--ink2);background:var(--surface);color:var(--ink)}
#q::placeholder{color:var(--muted)}
#sugg{position:absolute;left:0;right:0;top:calc(100% + 4px);z-index:25;list-style:none;margin:0;padding:.3rem;background:var(--surface);border:1px solid var(--line);border-radius:12px;box-shadow:0 14px 40px rgba(0,0,0,.18);max-height:min(22rem,60vh);overflow:auto}
#sugg li{padding:.55rem .7rem;border-radius:8px;cursor:pointer;font:400 1rem/1.3 var(--ui)}
#sugg li b{font-weight:650}
#sugg li span{display:block;font-size:.85rem;color:var(--muted)}
#sugg li[aria-selected=true],#sugg li:hover{background:var(--bg2)}
#sugg li.empty{cursor:default;color:var(--muted)}
.shelp{font:400 .88rem/1.4 var(--ui);color:var(--muted);margin:.45rem 0 0}
.result{margin-top:1.2rem;padding:1.1rem 1.2rem;border-left:4px solid var(--sun);background:color-mix(in srgb,var(--surface) 80%,transparent);border-radius:0 12px 12px 0;max-width:36em}
.r-main{font:500 1.22rem/1.45 var(--serif);margin-bottom:.5rem}
.r-today{font:600 1rem/1.45 var(--ui);color:var(--acc-ink);margin-bottom:.5rem}
.r-today:empty{display:none}
.r-more{font:400 1rem/1.5 var(--ui);color:var(--ink2);margin-bottom:.4rem}
.btn{display:inline-flex;align-items:center;gap:.4rem;font:600 .95rem/1 var(--ui);padding:.7rem 1rem;border-radius:999px;border:1.5px solid var(--ink);background:var(--ink);color:var(--bg);text-decoration:none;cursor:pointer;min-height:44px}
.btn.ghost{background:transparent;color:var(--ink)}
.btn.small{padding:.5rem .85rem;font-size:.9rem;min-height:40px}
.place-share{margin-top:.9rem}
.r-next{font:600 .98rem/1.4 var(--ui);margin:.2rem 0 .7rem}

/* dial */
.dialfig{margin:0;position:relative}
.dialwrap{position:relative;max-width:640px;margin:0 auto}
.dial{display:block;width:100%;height:auto;font-family:var(--ui);overflow:visible}
.dial .band-edge{fill:none;stroke:var(--bg);stroke-width:1.2}
.dial .tick{stroke:var(--line);stroke-width:1}
.dial .mon{fill:var(--muted);font-size:15px;font-weight:600;letter-spacing:.02em}
.dial .track{fill:none;stroke:var(--track);stroke-width:1}
.dial .yr{fill:none;stroke:var(--yr);stroke-width:3;stroke-linecap:round;opacity:.82}
.dial .yr.last{stroke:var(--yr-last);opacity:1}
.dial .yr.hot{stroke:var(--acc);opacity:1;stroke-width:5}
.dial .avg{fill:none;stroke:var(--winter);stroke-width:7;stroke-linecap:butt}
.dial .avg-end{stroke:var(--winter);stroke-width:2}
.dial .clear{fill:none;stroke:var(--clear);stroke-width:2;stroke-dasharray:5 4}
.dial .today line{stroke:var(--ink);stroke-width:1.6;stroke-dasharray:2 3}
.dial .today circle{fill:var(--sun);stroke:var(--bg);stroke-width:2.5}
.dial .c-place{font:600 18px var(--ui);fill:var(--ink2)}
.dial .c-dates{font:520 29px var(--disp);fill:var(--ink);font-variation-settings:"opsz" 96}
.dial .c-days{font:600 19px var(--ui);fill:var(--acc-ink)}
.dialfig figcaption{max-width:640px;margin:.8rem auto 0}
.fig-intro{font:400 1rem/1.5 var(--ui);color:var(--ink2)}
.legend{display:flex;flex-wrap:wrap;gap:.4rem 1.1rem;font:500 .88rem/1.3 var(--ui);color:var(--ink2);margin:.2rem 0 .7rem}
.lg{display:inline-flex;align-items:center;gap:.45rem}
.lg i{display:inline-block;width:26px;height:0;border-top:6px solid var(--winter)}
.lg-clear i{border-top:2px dashed var(--clear)}
.lg-years i{border-top:3.5px solid var(--yr);border-radius:2px}
.ramp-key{max-width:360px;margin:.2rem 0 .8rem}
.ramp{display:block;height:10px;border-radius:5px;background:linear-gradient(90deg,#1f2747 0%,#314270 22%,#6880b8 44%,#f6dc96 46%,#f2ba54 62%,#e78c30 80%,#c4581e 100%)}
.rk{display:flex;justify-content:space-between;font:500 .8rem/1.2 var(--ui);color:var(--muted);margin-top:.3rem}
.tip{position:absolute;z-index:22;pointer-events:none;background:var(--tip-bg);color:var(--tip-ink);font:500 .88rem/1.35 var(--ui);padding:.45rem .6rem;border-radius:6px;max-width:260px;transform:translate(-50%,calc(-100% - 12px));white-space:normal}
.tip small{display:block;opacity:.8;font-size:.8rem}

/* sections */
.block{padding:clamp(2.2rem,5vw,4rem) 16px;border-top:1px solid var(--line-soft)}
.wrap{max-width:42rem;margin:0 auto}
.wide{max-width:1180px;margin:1.2rem auto}
.narrowish{max-width:760px}
.todo{background:var(--bg2)}
.todo-list{list-style:none;margin:1.2rem 0;padding:0;display:grid;gap:.9rem}
.todo-list li{padding:.9rem 1rem;background:var(--surface);border-radius:10px;border:1px solid var(--line-soft);font-size:1.05rem}
.todo-list b{font-family:var(--ui);font-weight:700}

/* map */
.mapfig{margin:0}
.mapctl{display:flex;flex-wrap:wrap;align-items:center;gap:.6rem 1rem;margin:0 0 .6rem}
.segs{display:inline-flex;border:1px solid var(--line);border-radius:999px;padding:3px;gap:2px}
.seg{font:600 .9rem/1 var(--ui);border:0;background:transparent;color:var(--ink2);padding:.55rem .9rem;border-radius:999px;cursor:pointer;min-height:38px}
.seg[aria-pressed=true]{background:var(--ink);color:var(--bg)}
.phelp{font:400 .88rem/1.3 var(--ui);color:var(--muted)}
.mapwrap{position:relative;width:100%;max-width:min(1000px,calc((100vh - 170px) * 1.55));margin:0 auto;aspect-ratio:1.55;background:var(--plate);border:1px solid var(--line-soft);border-radius:14px;overflow:hidden;touch-action:manipulation}
#map{display:block;width:100%;height:100%;cursor:crosshair}
.mlegend{display:flex;align-items:center;flex-wrap:wrap;gap:.3rem .8rem;margin:.6rem 0 0;font:500 .85rem/1.2 var(--ui);color:var(--ink2)}
.mramp{display:block;width:min(320px,60vw);height:10px;border-radius:5px}
.mrk{display:flex;justify-content:space-between;width:min(320px,60vw);font-size:.8rem;color:var(--muted)}
.mscale{display:inline-flex;flex-direction:column;gap:.25rem}
.pcard{position:absolute;z-index:23;width:240px;background:var(--surface);color:var(--ink);border:1px solid var(--line);border-radius:12px;box-shadow:0 12px 34px rgba(0,0,0,.2);padding:.75rem .85rem .8rem;font:400 .92rem/1.35 var(--ui)}
.pcard b{display:block;font-weight:700;font-size:1.02rem;padding-right:1.4rem}
.pcard span{display:block;color:var(--muted);font-size:.84rem}
.pcard .mc-line{color:var(--ink);font-weight:600;font-size:.98rem;margin:.35rem 0 .55rem}
.pcard .mc-x{position:absolute;top:4px;right:6px;width:32px;height:32px;border:0;background:transparent;color:var(--ink2);font-size:1.3rem;cursor:pointer;border-radius:50%}

/* charts + tables */
.fig{margin:0}
.fig figcaption{font:600 .95rem/1.3 var(--ui);margin-bottom:.4rem}
.scrollx{overflow-x:auto}
.chart{display:block;width:100%;min-width:520px;height:auto;font-family:var(--ui)}
.chart .grid{stroke:var(--line-soft);stroke-width:1}
.chart .ax{fill:var(--muted);font-size:13px}
.chart .ax.strong{fill:var(--ink);font-weight:650}
.chart .bar{fill:var(--yr)}
.chart .bar.last{fill:var(--yr-last)}
.chart .bar.hot{fill:var(--acc)}
.chart .mean{stroke:var(--winter);stroke-width:2;stroke-dasharray:6 4}
.tablewrap{overflow-x:auto;margin:1rem 0}
table.data{width:100%;border-collapse:collapse;font:400 .97rem/1.35 var(--ui)}
table.data th,table.data td{padding:.55rem .6rem;border-bottom:1px solid var(--line-soft);text-align:left;vertical-align:top}
table.data thead th{font-weight:700;color:var(--ink2);border-bottom:1.5px solid var(--line)}
table.data .num{text-align:right;font-variant-numeric:tabular-nums}
table.data .sub{display:block;font-size:.8rem;color:var(--muted);font-weight:400}
table.data tbody th{font-weight:600}
.morebtn{margin:.2rem 0 1rem}
ul.plain{padding-left:1.1rem}
.sources li{margin:.35rem 0;font:400 .95rem/1.45 var(--ui)}

/* share */
.share-row{display:flex;align-items:center;flex-wrap:wrap;gap:.45rem}
.share-row .lbl{font:600 .88rem/1 var(--ui);color:var(--muted);margin-right:.2rem}
.sh{display:grid;place-items:center;width:40px;height:40px;border-radius:50%;border:1px solid var(--line-soft);background:transparent;color:var(--ink);cursor:pointer;text-decoration:none}
.sh svg{width:18px;height:18px}
.sh:hover,.sh:focus-visible{border-color:var(--acc);color:var(--acc-ink)}
@media (pointer:coarse){.sh{width:44px;height:44px}}
.status{font:500 .85rem/1.3 var(--ui);color:var(--muted);min-height:1.1em;margin:.3rem 0 0}

footer{display:flex;flex-wrap:wrap;gap:.6rem 1.4rem;justify-content:center;padding:2rem 16px 3rem;border-top:1px solid var(--line-soft);font:400 .9rem/1.4 var(--ui);color:var(--muted)}
footer a{color:var(--ink2)}

/* share pages */
.hpage main{padding:3rem 16px}
.hpage h1{font-size:clamp(1.8rem,3vw + .8rem,2.8rem)}

/* phone */
@media (max-width:900px){
  .hero-grid{display:flex;flex-direction:column;gap:0}
  .hero-text{display:contents}
  .hero-text .kicker{order:1}.hero-text h1{order:2}.hero-text .deck{order:3}.search{order:4}
  .dialfig{display:contents}
  .dialwrap{order:5;margin-top:.4rem;width:100%}
  .result{order:6}.place-share{order:7}
  .dialfig figcaption{order:8;margin-top:1.2rem}
  .dialfig figcaption .fig-intro,.dialfig figcaption .legend,.dialfig figcaption .ramp-key,.dialfig figcaption .note{font-size:.92rem}
  .dialwrap{max-width:520px}
  .deck{font-size:1.1rem}
}
@media (max-width:520px){
  body{font-size:1.06rem}
  .hero{padding-top:1.1rem}
  .result{padding:.9rem 1rem}
  .mapwrap{aspect-ratio:1.05}
  .dial .mon{font-size:17px}
}
@media (prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important;animation:none!important}}
@media print{.topbar,.rail,.share-row,.search,.mapctl{display:none}}
/* FM-1018 rail clearance (2 Nov 2026) */
@media (min-width:1191px) and (max-width:1360px){.rail{display:none!important}}