/* Photography stays outside the opaque reading column. The existing type and anchors do not move. */
body{isolation:isolate}
.atmosphere-backdrop{position:fixed;inset:0;z-index:-1;pointer-events:none;display:none;background:var(--paper);overflow:hidden}
:root:not([data-atmosphere=none])[data-atmosphere] .atmosphere-backdrop{display:block}
.atmosphere-backdrop::before{content:"";position:absolute;inset:0;background-image:var(--scene-image);background-size:cover;background-position:center;filter:saturate(.62) brightness(.72)}
.atmosphere-backdrop::after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,transparent 0%,color-mix(in srgb,var(--paper) 38%,transparent) calc(50% - var(--page-width)/2 - 160px),var(--paper) calc(50% - var(--page-width)/2 - 48px),var(--paper) calc(50% + var(--page-width)/2 + 48px),color-mix(in srgb,var(--paper) 38%,transparent) calc(50% + var(--page-width)/2 + 160px),transparent 100%)}
:root:not([data-atmosphere=none])[data-atmosphere] .book-page{background:var(--paper);box-shadow:0 0 0 32px var(--paper),0 0 64px 48px var(--paper)}
:root[data-atmosphere=forest],.atmosphere-preview[data-scene=forest]{--scene-image:url('/assets/atmospheres/forest.jpg')}
:root[data-atmosphere=rain],.atmosphere-preview[data-scene=rain]{--scene-image:url('/assets/atmospheres/rain.jpg')}
:root[data-atmosphere=hearth],.atmosphere-preview[data-scene=hearth]{--scene-image:url('/assets/atmospheres/hearth.jpg')}
:root[data-atmosphere=sea],.atmosphere-preview[data-scene=sea]{--scene-image:url('/assets/atmospheres/sea.jpg')}
:root[data-theme=paper][data-atmosphere=forest]{--paper:#f6f7ef;--panel:#fbfcf6;--accent:#3e5945}
:root[data-theme=paper][data-atmosphere=rain]{--paper:#f2f4f5;--panel:#fafbfc;--accent:#456075}
:root[data-theme=paper][data-atmosphere=hearth]{--paper:#f8f3e9;--panel:#fdf9f2;--accent:#79543a}
:root[data-theme=paper][data-atmosphere=sea]{--paper:#f2f7f6;--panel:#fafdfc;--accent:#3b6367}
:root[data-theme=night] .atmosphere-backdrop::before{filter:saturate(.55) brightness(.4)}
.atmosphere-header-control{display:flex;align-items:center;gap:0}
#atmosphere-quick-pause{min-width:36px;min-height:44px;padding:8px 7px;color:var(--accent);font-size:13px}
#open-atmosphere[data-playing=true]{color:var(--accent);box-shadow:inset 0 -1px var(--accent)}
.atmosphere-dialog{padding:0;width:min(880px,calc(100vw - 48px));max-height:calc(100dvh - 64px);margin:auto;border:1px solid var(--line);border-radius:12px;overflow:auto;box-shadow:0 28px 120px #101c1538;scrollbar-width:thin;overscroll-behavior:contain}
.atmosphere-dialog::backdrop{background:#0b191768;backdrop-filter:blur(6px)}
.atmosphere-shell{display:grid;grid-template-columns:290px minmax(0,1fr);min-height:650px}
.atmosphere-preview{position:sticky;top:0;align-self:start;height:100%;max-height:calc(100dvh - 66px);isolation:isolate;background:#26372d;overflow:hidden;color:#fffdf4}
.atmosphere-preview::before{content:"";position:absolute;inset:0;z-index:-2;background:var(--scene-image) center/cover;filter:saturate(.75) brightness(.82);transition:opacity .25s}
.atmosphere-preview::after{content:"";position:absolute;inset:0;z-index:-1;background:linear-gradient(180deg,#0a171118 35%,#0a1711b8 100%)}
.atmosphere-preview .atmosphere-elements{z-index:-1}
.atmosphere-preview[data-scene=none]{background:var(--paper);color:var(--ink)}
.atmosphere-preview[data-scene=none]::before,.atmosphere-preview[data-scene=none]::after,.atmosphere-preview[data-scene=none] .atmosphere-elements{display:none}
.atmosphere-preview[data-scene=none] .atmosphere-preview-text :is(span,p){color:var(--muted)}
.atmosphere-preview-text{position:absolute;bottom:40px;left:28px;right:24px}
.atmosphere-preview-text>span{font:10px/1.8 var(--interface);letter-spacing:.15em;color:#eeeeddc9}
.atmosphere-preview-text h2{font:400 32px/1.6 var(--book);margin:12px 0 6px;letter-spacing:.06em}
.atmosphere-preview-text p{font:12px/1.9 var(--interface);margin:0;color:#f2f3e6db}
.atmosphere-panel{padding:24px 30px 22px;background:var(--panel);min-width:0}
.atmosphere-heading{display:flex;align-items:flex-start;justify-content:space-between;gap:12px;margin-bottom:18px}
.atmosphere-heading p{font:11px/1.5 var(--interface);color:var(--muted);margin:0 0 8px}
.atmosphere-heading h2{font:400 23px/1.5 var(--book);margin:0;letter-spacing:.02em}
.atmosphere-heading>button{font:11px var(--interface);color:var(--muted);min-width:44px;min-height:44px;margin:-7px -8px 0 0}
.atmosphere-choices{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.atmosphere-choice{position:relative;padding:0;overflow:hidden;border:1px solid var(--line);border-radius:7px;text-align:left;background:var(--paper);transition:border-color .15s,box-shadow .15s;min-width:0}
.atmosphere-choice img{display:block;width:100%;height:60px;object-fit:cover;filter:saturate(.68);transition:filter .2s}
.atmosphere-choice-name{display:block;padding:11px 12px;font:12px/1.5 var(--interface)}
.atmosphere-choice[aria-pressed=true]{border-color:var(--accent);box-shadow:0 0 0 1px var(--accent)}
.atmosphere-choice:hover img,.atmosphere-choice[aria-pressed=true] img{filter:saturate(.95)}
.atmosphere-choice-check{display:none;position:absolute;right:11px;bottom:12px;font:11px var(--interface);color:var(--accent)}
[aria-pressed=true]>.atmosphere-choice-check{display:block}
.atmosphere-none{display:flex;position:relative;align-items:center;width:100%;gap:12px;min-height:44px;margin:12px 0 0;padding:10px 12px;border:1px solid var(--line);border-radius:6px;text-align:left;font:12px/1.5 var(--interface)}
.atmosphere-none>span:not(.atmosphere-choice-check){font-size:10px;color:var(--muted)}
.atmosphere-none[aria-pressed=true]{border-color:var(--accent)}
.atmosphere-none .atmosphere-choice-check{top:15px;bottom:auto}
.atmosphere-sound{border-top:1px solid var(--line);margin:16px 0 0;padding:14px 0 0}
.atmosphere-sound-heading{display:flex;align-items:center;justify-content:space-between;gap:8px;margin-bottom:10px}
.atmosphere-sound-heading h3{font:400 14px/1.5 var(--book);margin:0}
.atmosphere-sound-heading>span{font:9px/1.7 var(--interface);color:var(--muted)}
.atmosphere-volume{display:grid;grid-template-columns:minmax(95px,1fr) minmax(80px,1.3fr) 32px;gap:14px;align-items:center;margin:0;font:11px/1.8 var(--interface);min-height:44px}
.atmosphere-volume label span{display:block;font-size:10px;color:var(--muted)}
.atmosphere-volume input{width:100%;min-width:0;accent-color:var(--accent);height:44px;cursor:pointer}
.atmosphere-volume output{font-size:10px;color:var(--muted);font-variant-numeric:tabular-nums;text-align:right}
.atmosphere-motion{display:flex;align-items:center;justify-content:space-between;min-height:32px;font-size:11px;margin-top:4px}
.atmosphere-motion label span{display:block;color:var(--muted);font-size:10px;line-height:1.8;margin-top:3px}
.atmosphere-motion input{appearance:none;position:relative;flex:none;width:34px;height:20px;border:1px solid var(--line);border-radius:20px;background:var(--wash);cursor:pointer}
.atmosphere-motion input::before{content:"";position:absolute;top:3px;left:3px;width:12px;height:12px;border-radius:50%;background:var(--muted)}
.atmosphere-motion input:checked{background:var(--accent);border-color:var(--accent)}
.atmosphere-motion input:checked::before{left:17px;background:var(--panel)}
.atmosphere-footer{display:flex;align-items:center;justify-content:space-between;gap:18px;margin-top:17px}
.atmosphere-play{display:flex;align-items:center;justify-content:center;gap:10px;padding:12px 19px;border-radius:6px;background:var(--accent);color:var(--panel);font:12px var(--interface);min-height:44px;min-width:142px}
#atmosphere-return{font:11px var(--interface);min-height:44px;padding:8px 0;color:var(--muted);white-space:nowrap}
#atmosphere-return span{margin-left:6px}
.atmosphere-status{font:10px/1.9 var(--interface);min-height:19px;color:var(--muted);margin:12px 0 0;overflow-wrap:anywhere}
.atmosphere-dialog[data-playback=error] .atmosphere-status{color:var(--ink)}
.atmosphere-about{font:10px/1.8 var(--interface);margin-top:13px;color:var(--muted)}
.atmosphere-about summary{cursor:pointer;font-size:10px;min-height:24px}.atmosphere-about p{margin:10px 0}.atmosphere-about a{color:var(--accent)}
/* Weather stays behind the fixed paper mask. The hearth adds a small flame field
   anchored to its fuel; its photograph remains still. */
.atmosphere-elements{position:absolute;inset:0;overflow:hidden;pointer-events:none;opacity:0}
.atmosphere-elements::before,.atmosphere-elements::after{content:"";position:absolute;inset:var(--weather-inset,-12%);background-position:center;background-size:var(--weather-size,cover);mask-image:var(--weather-mask,none);opacity:var(--weather-opacity,.35)}
.atmosphere-elements::before{background-image:var(--weather-near,none)}
.atmosphere-elements::after{background-image:var(--weather-far,none);opacity:var(--weather-far-opacity,.2)}
:root[data-atmosphere=forest],.atmosphere-preview[data-scene=forest]{
  --weather-near:radial-gradient(ellipse at 18% 10%,#f8e9a4a0 0%,transparent 43%),radial-gradient(ellipse at 82% 48%,#e8efc976 0%,transparent 32%);
  --weather-far:radial-gradient(ellipse at 23% 28%,#0c261da6 0% 12%,transparent 30%),radial-gradient(ellipse at 78% 60%,#0c261d91 0% 10%,transparent 32%);
  --weather-near-motion:atmosphere-canopy 13s ease-in-out infinite alternate;
  --weather-far-motion:atmosphere-canopy 19s ease-in-out -6s infinite alternate-reverse;
  --scene-drift:atmosphere-forest-drift 24s ease-in-out infinite alternate;
}
:root[data-atmosphere=rain],.atmosphere-preview[data-scene=rain]{
  --weather-near:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='173' height='212' fill='none' stroke='%23d9edf5' stroke-linecap='round'%3E%3Cpath d='M19 16l-4 23M77 83l-3 18M142 147l-4 24M48 174l-2 14M121 31l-3 19'/%3E%3C/svg%3E");
  --weather-far:var(--weather-near);
  --weather-size:173px 212px;--weather-inset:-212px -12%;--weather-opacity:.32;--weather-far-opacity:.18;
  --weather-near-motion:atmosphere-rain 1.7s linear infinite;
  --weather-far-motion:atmosphere-rain 2.8s linear -.8s infinite;
  --scene-drift:atmosphere-rain-drift 26s ease-in-out infinite alternate;
}
:root[data-atmosphere=hearth],.atmosphere-preview[data-scene=hearth]{
  --weather-near:radial-gradient(ellipse at 76% 72%,#ffb35bd4 0%,#eb8a3930 24%,transparent 56%);
  --weather-far:radial-gradient(ellipse at 25% 90%,#ffe5b4b3 0%,transparent 48%);
  --weather-opacity:.28;--weather-far-opacity:.24;
  --weather-near-motion:atmosphere-fire 4.7s ease-in-out infinite alternate;
  --weather-far-motion:atmosphere-fire 7.3s ease-in-out -2s infinite alternate-reverse;
  --scene-drift:none;
}
.hearth-flames{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;object-position:center;mix-blend-mode:screen;opacity:.68;filter:saturate(.8) brightness(.85)}
.hearth-flames[hidden]{display:none}
.atmosphere-preview[data-scene=hearth]{--hearth-position:78% 50%}
.atmosphere-preview[data-scene=hearth]::before{background-position:var(--hearth-position)}
.atmosphere-preview[data-scene=hearth] .hearth-flames{object-position:var(--hearth-position)}
:root[data-atmosphere=sea],.atmosphere-preview[data-scene=sea]{
  --weather-near:var(--scene-image);
  --weather-far:radial-gradient(ellipse at 18% 68%,#f5eac975 0%,transparent 44%),radial-gradient(ellipse at 82% 88%,#d2e8e04d 0%,transparent 36%);
  --weather-mask:linear-gradient(transparent 28%,#000 56%);--weather-opacity:.27;--weather-far-opacity:.22;
  --weather-near-motion:atmosphere-tide 8s ease-in-out infinite alternate;
  --weather-far-motion:atmosphere-tide 11s ease-in-out -4s infinite alternate-reverse;
  --scene-drift:atmosphere-sea-drift 20s ease-in-out infinite alternate;
}
:root[data-atmosphere=sea] .atmosphere-backdrop .atmosphere-elements::before,.atmosphere-preview[data-scene=sea] .atmosphere-elements::before{inset:0;filter:saturate(.62) brightness(.72)}
.atmosphere-preview[data-scene=sea] .atmosphere-elements::before{filter:saturate(.75) brightness(.82)}
:root[data-theme=night][data-atmosphere=sea] .atmosphere-backdrop .atmosphere-elements::before{filter:saturate(.55) brightness(.4)}
@media(prefers-reduced-motion:no-preference){
  :root[data-atmosphere-motion=true] :is(.atmosphere-backdrop,.atmosphere-preview)::before{animation:var(--scene-drift,none)}
  :root[data-atmosphere-motion=true] .atmosphere-elements{opacity:1}
  :root[data-atmosphere-motion=true] .atmosphere-elements::before{animation:var(--weather-near-motion,none)}
  :root[data-atmosphere-motion=true] .atmosphere-elements::after{animation:var(--weather-far-motion,none)}
}
@keyframes atmosphere-forest-drift{from{transform:scale(1.035) translate(-.5%,0)}to{transform:scale(1.065) translate(.5%,.4%)}}
@keyframes atmosphere-rain-drift{from{transform:scale(1.03) translate(0,-.3%)}to{transform:scale(1.045) translate(.4%,.3%)}}
@keyframes atmosphere-sea-drift{from{transform:scale(1.045) translate(-.6%,-.2%)}to{transform:scale(1.065) translate(.6%,.3%)}}
@keyframes atmosphere-canopy{from{transform:translate(-2%,-1%) rotate(-2deg);opacity:.2}to{transform:translate(2%,1%) rotate(2deg);opacity:.48}}
@keyframes atmosphere-rain{from{transform:translateY(-212px)}to{transform:translateY(0)}}
@keyframes atmosphere-fire{0%,100%{transform:scale(1);opacity:.13}37%{transform:scale(1.07,.98);opacity:.31}68%{transform:scale(1.02,1.05);opacity:.2}}
@keyframes atmosphere-tide{from{transform:translate(-1.4%,-1%) scale(1.02,.99);opacity:.13}to{transform:translate(1.4%,1.4%) scale(1.05,1.04);opacity:.3}}
:root[data-atmosphere-active=false] :is(.atmosphere-backdrop,.atmosphere-preview)::before,
:root[data-atmosphere-active=false] .atmosphere-elements::before,
:root[data-atmosphere-active=false] .atmosphere-elements::after,
.atmosphere-dialog:not([open]) .atmosphere-preview::before,
.atmosphere-dialog:not([open]) .atmosphere-elements::before,
.atmosphere-dialog:not([open]) .atmosphere-elements::after{animation-play-state:paused!important}
:root[data-theme=night] .atmosphere-backdrop .atmosphere-elements{filter:brightness(.55) saturate(.65)}
@media(max-width:1000px){.atmosphere-backdrop::after{background:color-mix(in srgb,var(--paper) 96%,transparent)}}
@media(max-width:680px){.atmosphere-dialog{width:calc(100vw - 24px);max-height:calc(100dvh - 32px);border-radius:10px}.atmosphere-shell{grid-template-columns:1fr;min-height:0}.atmosphere-preview{position:relative;height:160px;max-height:none;min-height:160px}.atmosphere-preview::before{background-position:center 47%}.atmosphere-preview-text{bottom:20px;left:24px}.atmosphere-preview-text>span{display:none}.atmosphere-preview-text h2{font-size:27px;margin:0 0 2px}.atmosphere-preview-text p{font-size:11px}.atmosphere-panel{padding:23px 24px 20px}.atmosphere-heading{margin-bottom:19px}.atmosphere-heading h2{font-size:21px}.atmosphere-heading p{font-size:10px}.atmosphere-choice img{height:68px}.atmosphere-volume{grid-template-columns:92px minmax(45px,1fr) 30px;gap:10px}.atmosphere-sound-heading>span{font-size:8px}.atmosphere-sound{margin-top:19px;padding-top:17px}.atmosphere-none>span:not(.atmosphere-choice-check){font-size:9px}.atmosphere-footer{gap:8px}.atmosphere-play{min-width:130px;padding:12px 14px}}
@media(max-width:390px){.atmosphere-panel{padding-left:18px;padding-right:18px}.atmosphere-choices{gap:10px}.atmosphere-heading h2{font-size:20px}.reading-header{gap:2px;padding-left:8px;padding-right:8px}.running-title{font-size:10px}.header-actions .quiet-button{padding-left:7px;padding-right:7px}.atmosphere-sound-heading>span{display:none}.atmosphere-volume{grid-template-columns:85px minmax(45px,1fr) 28px;gap:7px}}
@media(prefers-reduced-motion:reduce){.atmosphere-backdrop::before,.atmosphere-preview::before,.atmosphere-elements::before,.atmosphere-elements::after{animation:none!important;transition:none}.atmosphere-elements{display:none}.atmosphere-choice,.atmosphere-choice img{transition:none}}
@media(prefers-reduced-transparency:reduce){.atmosphere-dialog::backdrop{backdrop-filter:none;background:#17251be6}}
@media(max-width:680px){.atmosphere-preview[data-scene=hearth]{--hearth-position:78% 47%}}