/* Time-of-day atmosphere. Existing components and canvas retain theme tokens. */
html[data-phase=night]{--bg:#080f20;--panel:#111c30;--text:#f1f5fc;--muted:#acb9cc;--line:#2a3850;--header:rgba(8,15,32,.82);--soft:#16233b;color-scheme:dark}
html[data-phase=day]{--bg:#f4f8fc;--panel:#fff;--text:#192f46;--muted:#526879;--line:#d3dfe9;--header:rgba(244,248,252,.85);--soft:#e7f0f6;color-scheme:light}
body,header,footer,.quote,.cta,.project-slide,.carousel-card{transition:background-color .65s ease,color .5s ease,border-color .5s ease}
.day-night-control{display:flex;flex-direction:column;align-items:center;gap:3px;flex-shrink:0;width:112px;line-height:1.2}
.sky-switch{position:relative;display:block;width:108px;height:42px;padding:0;border:1px solid #ffffff50;border-radius:30px;isolation:isolate;overflow:hidden;background:linear-gradient(165deg,#4f9bd7,#a2dafa);box-shadow:inset 0 2px 7px #20496c55,0 3px 12px #132c4620;transition:background .6s,box-shadow .6s}
.sky-switch:focus-visible,.sky-auto:focus-visible{outline:2px solid var(--accent);outline-offset:3px}
.sky-scene{position:absolute;inset:0;pointer-events:none}
.sky-sun{position:absolute;top:9px;right:17px;width:19px;height:19px;border-radius:50%;background:#ffe68b;box-shadow:0 0 10px #ffe48ddd,0 0 22px #ffe48d88;transition:transform .7s,opacity .5s}
.sky-moon{position:absolute;top:7px;left:15px;width:23px;height:23px;border-radius:50%;background:#ffe39b;transform:translateY(30px) rotate(-25deg);opacity:0;transition:transform .7s,opacity .5s}
.sky-moon:after{content:'';position:absolute;left:8px;top:-4px;width:23px;height:23px;background:#1a2448;border-radius:50%}
.sky-stars{position:absolute;inset:0;opacity:0;background:radial-gradient(circle at 41% 20%,#fff 0 1px,transparent 1.6px),radial-gradient(circle at 54% 39%,#fff 0 1px,transparent 1.6px),radial-gradient(circle at 65% 15%,#fff 0 .8px,transparent 1.5px),radial-gradient(circle at 37% 52%,#fff 0 .7px,transparent 1.4px),radial-gradient(circle at 58% 67%,#fff 0 .8px,transparent 1.5px);transition:opacity .7s}
.sky-clouds{position:absolute;bottom:-5px;left:-10px;width:135px;height:23px;opacity:.94;background:radial-gradient(ellipse at 10% 80%,#f7fdff 0 14px,transparent 15px),radial-gradient(ellipse at 30% 75%,#d1edff 0 17px,transparent 18px),radial-gradient(ellipse at 54% 95%,#f7fdff 0 23px,transparent 24px),radial-gradient(ellipse at 74% 80%,#b9dff9 0 18px,transparent 19px),radial-gradient(ellipse at 96% 80%,#f7fdff 0 17px,transparent 18px);filter:drop-shadow(0 -2px 3px #c6efff);transition:transform .8s,opacity .6s}
.sky-orb{position:absolute;top:4px;left:4px;width:32px;height:32px;background:radial-gradient(circle at 35% 30%,#fff,#eefaff 70%,#cce4f1);border-radius:50%;box-shadow:0 0 10px #fff9,0 3px 5px #28446455,inset 0 -1px 3px #b3d5e3;transition:transform .65s cubic-bezier(.22,.8,.3,1),box-shadow .6s;z-index:2}
html[data-phase=night] .sky-switch{background:linear-gradient(155deg,#263256,#10142e);box-shadow:inset 0 2px 7px #030716aa,0 3px 15px #0003}
html[data-phase=night] .sky-orb{transform:translateX(66px);box-shadow:0 0 15px #dce9ffaa,0 0 28px #9bacff44,inset 0 -1px 3px #bbd0ed}
html[data-phase=night] .sky-sun{transform:translateY(32px);opacity:0}
html[data-phase=night] .sky-moon{transform:translateY(0) rotate(-25deg);opacity:1}
html[data-phase=night] .sky-stars{opacity:1}
html[data-phase=night] .sky-clouds{transform:translateX(-8px) translateY(3px);opacity:.65}
.sky-caption{display:flex;align-items:center;justify-content:space-between;width:100%;gap:4px;font-size:9px;white-space:nowrap;color:var(--muted)}
.sky-auto{padding:3px 5px;border:1px solid var(--line);border-radius:8px;background:transparent;font:inherit;color:var(--muted);min-height:22px}
.sky-auto[aria-pressed=true]{background:var(--soft);color:var(--text);border-color:var(--muted)}
@media(min-width:721px) and (max-width:1150px){header{padding-left:3%;padding-right:3%}header nav{gap:13px;font-size:12px}.header-actions{gap:12px}.header-actions>.button{display:none}}
@media(max-width:720px){.day-night-control{width:90px}.sky-switch{width:84px;height:34px}.sky-orb{width:26px;height:26px;top:3px;left:3px}html[data-phase=night] .sky-orb{transform:translateX(50px)}.sky-sun{width:17px;height:17px;top:6px;right:11px}.sky-moon{width:19px;height:19px;left:11px;top:5px}.sky-moon:after{width:20px;height:20px;left:7px}.sky-caption{font-size:8px}.sky-clouds{width:115px;height:18px}.sky-auto{min-height:22px}.header-actions{gap:6px}}
@media(max-width:380px){header{padding-left:12px;padding-right:12px}header .brand{gap:6px;font-size:12px}header .brand-logo{width:40px;height:auto}header .brand small{font-size:6px}.header-actions .menu{padding:5px}}
@media(prefers-reduced-motion:reduce){.sky-switch,.sky-scene *,.sky-orb,body,header,footer,.quote,.cta,.project-slide,.carousel-card{transition:none!important}}