/* Alpha: base styles and shared components. Tokens live in tokens.css. */

*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:96px}
body{margin:0;background:var(--bg);color:var(--fg);font:400 var(--fs-body)/1.6 var(--sans);-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}
img,svg{display:block;max-width:100%}
img{height:auto}
h1,h2,h3,p,ul,ol,dl,dd{margin:0}
ul,ol{padding:0;list-style:none}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;padding:0;cursor:pointer}
:focus-visible{outline:2px solid var(--red);outline-offset:3px;border-radius:2px}
::selection{background:var(--red);color:#fff}

.wrap{width:100%;max-width:1480px;margin-inline:auto;padding-inline:var(--gut)}
.skip{position:absolute;inset-inline-start:var(--gut);top:-80px;z-index:var(--z-skip);background:var(--graphite);color:#fff;padding:12px 16px;border-radius:var(--radius)}
.skip:focus{top:12px}
.icon{flex:none}
[dir="rtl"] .icon--dir{scale:-1 1} /* only arrows point the other way in Arabic */

/* type */
.eyebrow{font:500 var(--fs-label)/1.3 var(--mono);letter-spacing:.14em;text-transform:uppercase;color:var(--soft)}
.display{font-weight:300;font-size:var(--fs-display);line-height:1;letter-spacing:-.04em}
.title{font-weight:300;font-size:var(--fs-title);line-height:1.06;letter-spacing:-.035em}
.lede{font-weight:300;font-size:var(--fs-lede);line-height:1.65;color:var(--soft);max-width:46ch}
.ink-day{color:var(--ink-day)}
.ink-night{color:var(--ink-night);text-shadow:0 0 calc(var(--m)*36px) color-mix(in srgb,var(--lamp) calc(var(--m)*55%),transparent)}
[dir="rtl"] .eyebrow{letter-spacing:0;font-size:.8125rem;font-family:var(--sans)}
[dir="rtl"] .display{letter-spacing:0;line-height:1.25}
[dir="rtl"] .title{letter-spacing:0;line-height:1.35}

/* actions */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:10px;min-height:50px;padding:0 26px;border-radius:var(--pill);font-weight:500;font-size:var(--fs-small);line-height:1.2;white-space:nowrap;border:1px solid transparent;transition:background-color .25s,border-color .25s,color .25s,transform .25s var(--ease)}
.btn:active{transform:scale(.98)}
.btn--red{background:var(--red);color:#fff}
.btn--red:hover{background:var(--red-deep)}
.btn--line{border-color:var(--rule);color:var(--fg)}
.btn--line:hover{border-color:var(--fg)}
.btn .icon{transition:translate .35s var(--ease)}
.link{display:inline-flex;align-items:center;gap:10px;min-height:44px;font-weight:500;font-size:var(--fs-small);border-bottom:1px solid var(--rule);transition:border-color .25s}
.link:hover{border-color:var(--fg)}
.link .icon{transition:translate .35s var(--ease)}
.link:hover .icon{translate:4px 0}
[dir="rtl"] .link:hover .icon{translate:-4px 0}
.round{display:grid;place-items:center;width:44px;height:44px;border-radius:50%;border:1px solid var(--rule);color:var(--fg);transition:border-color .25s}
.round:hover{border-color:var(--fg)}

/* header */
.top{position:sticky;top:0;z-index:var(--z-top);background:color-mix(in oklab,var(--bg) 88%,transparent);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);border-bottom:1px solid transparent;transition:border-color .3s}
.top.is-stuck{border-bottom-color:var(--rule)}
.top__in{display:flex;align-items:center;gap:var(--s-6);min-height:84px}
.top__logo,.foot__logo{position:relative;display:block;height:30px;aspect-ratio:640/123;flex:none}
.top__logo img,.foot__logo img{position:absolute;inset:0;width:100%;height:100%}
.logo-day{opacity:calc(1 - var(--n))}
.logo-night{opacity:var(--n)}
.top__nav{display:flex;gap:30px;margin-inline-start:var(--s-5)}
.top__nav a{position:relative;padding:12px 0;font-size:.90625rem;color:var(--fg)}
.top__nav a::after{content:"";position:absolute;inset:auto 0 6px 0;height:1px;background:var(--red);transform:scaleX(0);transform-origin:left;transition:transform .35s var(--ease)}
[dir="rtl"] .top__nav a::after{transform-origin:right}
.top__nav a:hover::after,.top__nav a[aria-current]::after{transform:scaleX(1)}
.top__end{margin-inline-start:auto;display:flex;align-items:center;gap:10px}
.lang{display:inline-flex;align-items:center;min-height:44px;padding:0 16px;border:1px solid var(--rule);border-radius:var(--pill);font-size:.875rem;transition:border-color .25s}
.lang:hover{border-color:var(--fg)}
.dusk-mini>span{grid-area:1/1;transition:opacity .4s,rotate .6s var(--ease)}
.dusk-mini__sun{opacity:calc(1 - var(--n));rotate:calc(var(--n)*90deg)}
.dusk-mini__moon{opacity:var(--n);rotate:calc((1 - var(--n))*-90deg)}
.menu-btn{display:none}
.menu-btn>span{grid-area:1/1}
.menu-btn__close,.top.is-open .menu-btn__open{display:none}
.top.is-open .menu-btn__close{display:block}

/* the dusk switch */
.dusk{position:relative;display:inline-flex;gap:4px;padding:5px;border-radius:var(--pill);border:1px solid var(--rule);background:var(--glass)}
.dusk button{position:relative;z-index:1;display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:44px;min-width:108px;padding:0 18px;border-radius:var(--pill);font-size:.875rem;font-weight:500;color:var(--fg);opacity:.6;transition:opacity .3s}
.dusk button[aria-pressed="true"]{opacity:1}
.dusk::before{content:"";position:absolute;inset-block:5px;inset-inline-start:5px;width:calc(50% - 7px);border-radius:var(--pill);background:color-mix(in oklab,#fff,rgba(255,215,160,.22) var(--pct));box-shadow:0 1px 4px rgba(10,16,30,.16);translate:calc(var(--n)*(100% + 4px)) 0}
[dir="rtl"] .dusk::before{translate:calc(var(--n)*(-100% - 4px)) 0}

/* a photo that has a lit twin */
.is-night{opacity:max(var(--n),var(--h))}

/* scroll reveal: only when JS is running and motion is welcome */
.js .reveal{opacity:0;translate:0 26px;transition:opacity .9s var(--ease),translate .9s var(--ease);transition-delay:var(--d,0s)}
.js .reveal.is-in{opacity:1;translate:none}

/* footer */
.foot{margin-top:var(--section);border-top:1px solid var(--rule);padding-block:var(--s-8) var(--s-6)}
.foot__grid{display:grid;grid-template-columns:minmax(0,1.5fr) repeat(3,minmax(0,1fr));gap:var(--s-7) var(--s-6)}
.foot__brand p{margin-top:var(--s-4);color:var(--soft);font-weight:300;max-width:28ch}
.foot__col h2{font:500 var(--fs-small)/1.3 var(--sans);margin-bottom:var(--s-3)}
.foot__col li a{display:inline-flex;align-items:center;min-height:36px;color:var(--soft);font-size:var(--fs-small);font-weight:300;transition:color .25s}
.foot__col a:hover{color:var(--fg)}
.foot__base{display:flex;flex-wrap:wrap;justify-content:space-between;gap:var(--s-2) var(--s-5);margin-top:var(--s-8);padding-top:var(--s-5);border-top:1px solid var(--rule);font-size:.8125rem;color:var(--soft)}
.foot__base a{display:inline-flex;align-items:center;min-height:44px;border-bottom:1px solid transparent;transition:color .25s,border-color .25s}
.foot__base p{display:flex;align-items:center;min-height:44px}
.foot__base a:hover{color:var(--fg);border-color:var(--rule)}

/* plain pages: placeholders and 404 */
.plain{padding-block:clamp(72px,14vh,180px);min-height:58vh}
.plain .title{margin:var(--s-4) 0 var(--s-5);max-width:18ch}
.plain__acts{display:flex;flex-wrap:wrap;align-items:center;gap:var(--s-4) var(--s-6);margin-top:var(--s-6)}

@media (max-width:900px){
  .menu-btn{display:grid}
  .top__in{min-height:68px;gap:var(--s-3)}
  .top__logo{height:24px}
  .top__nav{display:none;position:absolute;inset:100% 0 auto 0;margin:0;flex-direction:column;gap:0;padding:var(--s-2) var(--gut) var(--s-5);background:var(--bg);border-bottom:1px solid var(--rule);z-index:var(--z-menu)}
  .top.is-open .top__nav{display:flex}
  .top__nav a{padding:16px 0;font-size:1.25rem;font-weight:300;border-bottom:1px solid var(--rule)}
  .top__nav a::after{display:none}
  .lang{padding:0 13px}
  .foot__grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .foot__brand{grid-column:1/-1}
}
@media (max-width:520px){
  .foot__grid{grid-template-columns:1fr}
  .dusk{display:flex}
  .dusk button{flex:1;min-width:0}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after,html{animation:none!important;transition:none!important}
  .js .reveal{opacity:1;translate:none}
}