/* breathlab.org design system
   One stylesheet shared by the homepage (11 locale copies), the generated
   blog/library pages and the hand-owned static pages.

   Palette: Night Forest (deep) / Dew (light) / Leaf (the icon green, the one
   accent) / petal chroma reserved for the Bloom and tiny highlights.
   Type: Bricolage Grotesque (display), Instrument Sans (body/UI),
   JetBrains Mono (timer data: ratios, seconds, BPM, eyebrows).
   GUTTER RULE: .wrap owns padding-inline. Sections use padding-block only. */

@import url("/assets/fonts/fonts.css");

:root{
  --deep:#06120C; --deep-2:#0B1F15; --deep-3:#12291C;
  --dew:#F3F6F2; --dew-2:#E9EFE8; --white:#FFFFFF;
  --ink:#0B1410; --ink-2:#2E3A33; --muted:#66736B; --muted-2:#8A968E;
  --line:rgba(11,20,16,.09); --line-strong:rgba(11,20,16,.16);
  --line-dark:rgba(255,255,255,.09); --line-dark-strong:rgba(255,255,255,.16);
  --leaf:#2FB454; --leaf-deep:#1D7A38; --leaf-bright:#5EE29A; --leaf-glow:rgba(47,180,84,.35);
  --violet:#7C6CF0; --coral:#F2716E; --gold:#F0C35A; --mint:#5EE29A; --sky:#6FB8F5;
  --on-dark:#EAF2EC; --on-dark-muted:#9FB3A6; --on-dark-faint:#6E8477;

  --font-display:"Bricolage Grotesque",-apple-system,BlinkMacSystemFont,"SF Pro Display","Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  --font-body:"Instrument Sans",-apple-system,BlinkMacSystemFont,"SF Pro Text","Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  --font-mono:"JetBrains Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;

  --ease-out:cubic-bezier(.22,1,.36,1); --ease-io:cubic-bezier(.65,0,.35,1); --ease-breath:cubic-bezier(.45,0,.55,1);
  --gutter:clamp(20px,5vw,40px); --wrap:1200px; --wrap-narrow:720px;
  --r-sm:10px; --r-md:18px; --r-lg:28px; --r-xl:40px;
  --nav-h:72px;
  --shadow-soft:0 1px 2px rgba(11,20,16,.05),0 24px 60px -20px rgba(11,20,16,.18);
  --shadow-deep:0 40px 90px -30px rgba(0,0,0,.7),0 2px 6px rgba(0,0,0,.35);
}

/* ---------- reset & base ---------- */
*,*::before,*::after{box-sizing:border-box;margin:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
body{font-family:var(--font-body);background:var(--dew);color:var(--ink);line-height:1.6;font-size:17px;
  -webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;overflow-x:clip;
  font-feature-settings:"ss01","cv11";}
body.theme-dark{background:var(--deep);color:var(--on-dark)}
a{color:inherit}
img,svg,video{display:block;max-width:100%}
img,video{height:auto}
img{-webkit-user-drag:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
::selection{background:var(--leaf);color:#fff}
:focus-visible{outline:2px solid var(--leaf);outline-offset:4px;border-radius:6px}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}

.wrap{max-width:var(--wrap);margin-inline:auto;padding-inline:var(--gutter)}
.wrap-narrow{max-width:var(--wrap-narrow);margin-inline:auto;padding-inline:var(--gutter)}
h1,h2,h3,h4{text-wrap:balance;font-family:var(--font-display);font-weight:500;letter-spacing:-.03em;line-height:1.02}
h1{font-size:clamp(44px,7.4vw,104px);font-variation-settings:"opsz" 96}
h2{font-size:clamp(34px,4.6vw,64px);font-variation-settings:"opsz" 72}
h3{font-size:clamp(22px,2.2vw,28px);font-weight:500;letter-spacing:-.02em;line-height:1.15;font-variation-settings:"opsz" 36}
p{text-wrap:pretty}
.lead{font-size:clamp(18px,1.5vw,21px);line-height:1.5;color:var(--muted)}
.theme-dark .lead,.dark .lead{color:var(--on-dark-muted)}
.eyebrow{font-family:var(--font-mono);font-size:12px;font-weight:500;letter-spacing:.18em;text-transform:uppercase;color:var(--leaf-deep);display:inline-flex;align-items:center;gap:10px}
.eyebrow::before{content:"";width:18px;height:1px;background:currentColor;opacity:.6}
.dark .eyebrow,.theme-dark .eyebrow{color:var(--leaf-bright)}
.mono{font-family:var(--font-mono);font-variant-numeric:tabular-nums}
.muted{color:var(--muted)}

/* ---------- buttons ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:10px;font-family:var(--font-body);font-weight:600;font-size:15.5px;
  letter-spacing:-.005em;text-decoration:none;border-radius:999px;padding:15px 26px;white-space:nowrap;
  transition:transform .28s var(--ease-out),box-shadow .28s var(--ease-out),background .2s ease,color .2s ease,border-color .2s ease;
  position:relative;isolation:isolate}
.btn:active{transform:scale(.97)}
.btn-primary{background:var(--ink);color:#fff;box-shadow:0 1px 0 rgba(255,255,255,.12) inset,0 10px 30px -12px rgba(11,20,16,.5)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 1px 0 rgba(255,255,255,.12) inset,0 18px 40px -14px rgba(11,20,16,.55)}
.dark .btn-primary,.theme-dark .btn-primary{background:#fff;color:var(--ink);box-shadow:0 10px 40px -10px rgba(255,255,255,.25)}
.dark .btn-primary:hover,.theme-dark .btn-primary:hover{box-shadow:0 18px 50px -10px rgba(255,255,255,.35)}
.btn-leaf{background:var(--leaf);color:#04150A;box-shadow:0 10px 30px -10px var(--leaf-glow)}
.btn-leaf:hover{transform:translateY(-2px);background:#3BC461;box-shadow:0 18px 40px -12px var(--leaf-glow)}
.btn-ghost{background:transparent;color:inherit;border:1px solid var(--line-strong);backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px)}
.btn-ghost:hover{border-color:currentColor;transform:translateY(-2px)}
.dark .btn-ghost,.theme-dark .btn-ghost{border-color:var(--line-dark-strong);color:var(--on-dark)}
.btn-sm{font-size:14px;padding:10px 18px}
.btn svg{flex:none}
.link-arrow{display:inline-flex;align-items:center;gap:8px;font-weight:600;text-decoration:none;font-size:15px}
.link-arrow svg{transition:transform .3s var(--ease-out)}
.link-arrow:hover svg{transform:translateX(4px)}

/* ---------- nav ---------- */
.nav{position:fixed;top:0;left:0;right:0;z-index:80;height:var(--nav-h);display:flex;align-items:center;
  transition:background .35s ease,box-shadow .35s ease,backdrop-filter .35s ease,height .35s var(--ease-out)}
.nav .wrap{width:100%;display:flex;align-items:center;justify-content:space-between;gap:20px}
.nav.is-scrolled{height:60px;background:rgba(243,246,242,.72);backdrop-filter:saturate(1.6) blur(18px);-webkit-backdrop-filter:saturate(1.6) blur(18px);
  box-shadow:0 1px 0 var(--line)}
.nav.on-dark:not(.is-scrolled){color:var(--on-dark)}
.nav.on-dark.is-scrolled{background:rgba(6,18,12,.66);color:var(--on-dark);box-shadow:0 1px 0 var(--line-dark)}
.nav-brand{display:flex;align-items:center;gap:11px;text-decoration:none;font-weight:600;font-size:15px;letter-spacing:-.01em;white-space:nowrap}
.nav-brand img{width:32px;height:32px;border-radius:9px;box-shadow:0 2px 8px rgba(11,20,16,.18)}
.nav-links{display:flex;align-items:center;gap:4px}
.nav-links a{font-size:14.5px;font-weight:500;text-decoration:none;padding:8px 14px;border-radius:999px;opacity:.78;
  transition:opacity .2s ease,background .2s ease}
.nav-links a:hover{opacity:1;background:rgba(11,20,16,.06)}
.on-dark .nav-links a:hover{background:rgba(255,255,255,.08)}
.nav-cta{display:inline-flex;align-items:center;gap:8px;font-size:14px;font-weight:600;text-decoration:none;color:#fff;background:var(--ink);
  border-radius:999px;padding:10px 18px;white-space:nowrap;transition:transform .25s var(--ease-out),background .2s ease}
.nav-cta:hover{transform:translateY(-1px);background:#1B2620}
.on-dark:not(.is-scrolled) .nav-cta,.on-dark.is-scrolled .nav-cta{background:#fff;color:var(--ink)}
.nav-burger{display:none;width:44px;height:44px;border-radius:999px;align-items:center;justify-content:center;position:relative;z-index:2}
.nav-burger span{position:absolute;left:12px;width:20px;height:2px;background:currentColor;border-radius:2px;transition:transform .4s var(--ease-out),opacity .2s ease,top .4s var(--ease-out)}
.nav-burger span:nth-child(1){top:16px}.nav-burger span:nth-child(2){top:21px}.nav-burger span:nth-child(3){top:26px}
.menu-open .nav-burger span:nth-child(1){top:21px;transform:rotate(45deg)}
.menu-open .nav-burger span:nth-child(2){opacity:0}
.menu-open .nav-burger span:nth-child(3){top:21px;transform:rotate(-45deg)}
.menu-open .nav-burger{color:var(--on-dark)}

/* full-screen mobile menu */
.menu{position:fixed;inset:0;z-index:70;background:var(--deep);color:var(--on-dark);display:flex;flex-direction:column;justify-content:flex-end;
  padding:var(--gutter);padding-top:calc(var(--nav-h) + 12px);padding-bottom:max(var(--gutter),env(safe-area-inset-bottom));
  visibility:hidden;opacity:0;transition:opacity .45s var(--ease-out),visibility 0s .45s}
.menu::before{content:"";position:absolute;inset:0;background:radial-gradient(60% 45% at 80% 15%,rgba(47,180,84,.22),transparent 70%),
  radial-gradient(50% 40% at 10% 90%,rgba(124,108,240,.16),transparent 70%);pointer-events:none}
.menu-open .menu{visibility:visible;opacity:1;transition:opacity .45s var(--ease-out),visibility 0s}
.menu-open{overflow:hidden}
.menu nav{display:flex;flex-direction:column;gap:2px;position:relative}
.menu nav a{font-family:var(--font-display);font-size:clamp(34px,9vw,46px);font-weight:500;letter-spacing:-.03em;line-height:1.15;text-decoration:none;
  padding:6px 0;display:flex;align-items:baseline;justify-content:space-between;
  transform:translateY(24px);opacity:0;transition:transform .6s var(--ease-out),opacity .6s var(--ease-out)}
.menu nav a small{font-family:var(--font-mono);font-size:12px;letter-spacing:.14em;color:var(--on-dark-faint)}
.menu-open .menu nav a{transform:none;opacity:1}
.menu-open .menu nav a:nth-child(1){transition-delay:.08s}.menu-open .menu nav a:nth-child(2){transition-delay:.14s}
.menu-open .menu nav a:nth-child(3){transition-delay:.2s}.menu-open .menu nav a:nth-child(4){transition-delay:.26s}
.menu-open .menu nav a:nth-child(5){transition-delay:.32s}.menu-open .menu nav a:nth-child(6){transition-delay:.38s}
.menu-foot{position:relative;margin-top:28px;padding-top:22px;border-top:1px solid var(--line-dark);display:flex;justify-content:space-between;align-items:center;gap:14px;flex-wrap:wrap;
  transform:translateY(16px);opacity:0;transition:transform .6s var(--ease-out) .42s,opacity .6s var(--ease-out) .42s}
.menu-open .menu-foot{transform:none;opacity:1}
.menu-foot .btn{padding:13px 22px}
.menu-foot .mono{font-size:12px;color:var(--on-dark-faint);letter-spacing:.08em}
@media (max-width:900px){
  .nav-links{display:none}
  .nav-burger{display:inline-flex}
  .nav .nav-cta{display:none}
  .nav.on-dark:not(.is-scrolled){color:var(--on-dark)}
  .menu-open .nav{background:transparent;box-shadow:none;backdrop-filter:none;-webkit-backdrop-filter:none;color:var(--on-dark)}
  .menu-open .nav .nav-brand{color:var(--on-dark)}
}

/* ---------- sections ---------- */
.section{padding-block:clamp(80px,10vw,140px)}
.section-tight{padding-block:clamp(56px,7vw,96px)}
.dark{background:var(--deep);color:var(--on-dark)}
.dark .muted{color:var(--on-dark-muted)}
.head{max-width:44ch;margin-bottom:clamp(36px,5vw,64px)}
.head h2{margin:14px 0 14px}
.head.center{text-align:center;margin-inline:auto}
.head.center .eyebrow{justify-content:center}
.head p{color:var(--muted);font-size:clamp(17px,1.3vw,19px);max-width:52ch}
.head.center p{margin-inline:auto}
.dark .head p{color:var(--on-dark-muted)}
.hr{border:0;border-top:1px solid var(--line)}
.dark .hr{border-color:var(--line-dark)}

/* glass card, the recurring surface */
.card{background:rgba(255,255,255,.66);border:1px solid rgba(255,255,255,.75);border-radius:var(--r-lg);
  box-shadow:var(--shadow-soft);backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
  transition:transform .5s var(--ease-out),box-shadow .5s var(--ease-out)}
.card:hover{transform:translateY(-4px);border-color:rgba(47,180,84,.45);background:rgba(255,255,255,.9);
  box-shadow:0 1px 2px rgba(11,20,16,.05),0 40px 80px -28px rgba(11,20,16,.3),0 0 0 4px rgba(47,180,84,.08)}
.dark .card{background:rgba(255,255,255,.045);border-color:var(--line-dark);box-shadow:none}
.dark .card:hover{background:rgba(255,255,255,.08);border-color:rgba(94,226,154,.4);box-shadow:0 0 0 4px rgba(94,226,154,.08)}

/* ---------- motion ---------- */
.reveal,.reveal-up,.reveal-scale{opacity:0;transform:translateY(22px);transition:opacity .9s var(--ease-out),transform .9s var(--ease-out);transition-delay:var(--d,0ms);will-change:opacity,transform}
.reveal-scale{transform:translateY(28px) scale(.96)}
.reveal.in,.reveal-up.in,.reveal-scale.in{opacity:1;transform:none}
.enter{opacity:1;transform:none;transition:opacity 1s var(--ease-out),transform 1s var(--ease-out);transition-delay:var(--d,0ms)}
@starting-style{.enter{opacity:0;transform:translateY(18px)}}
@media (prefers-reduced-motion:reduce){
  .reveal,.reveal-up,.reveal-scale,.enter{opacity:1;transform:none;transition:none}
  .card,.btn{transition:none}
}
.no-js .reveal,.no-js .reveal-up,.no-js .reveal-scale{opacity:1;transform:none}

/* film grain, very light, only on dark sections */
.grain{position:absolute;inset:0;pointer-events:none;opacity:.045;mix-blend-mode:overlay;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='160' height='160' filter='url(%23n)'/%3E%3C/svg%3E")}

/* ---------- footer ---------- */
.footer{background:var(--deep);color:var(--on-dark-muted);position:relative;overflow:hidden}
.footer::before{content:"";position:absolute;inset:auto -10% -40% -10%;height:70%;
  background:radial-gradient(50% 60% at 50% 100%,rgba(47,180,84,.16),transparent 70%);pointer-events:none}
.footer .wrap{position:relative}
.foot-top{display:grid;grid-template-columns:1.6fr repeat(3,1fr);gap:40px;padding-block:clamp(56px,7vw,88px) 32px}
.foot-brand{display:flex;align-items:center;gap:11px;color:#fff;text-decoration:none;font-weight:600;font-size:15px;margin-bottom:16px}
.foot-brand img{width:32px;height:32px;border-radius:9px}
.foot-tag{font-size:14.5px;line-height:1.6;max-width:32ch;color:var(--on-dark-muted)}
.foot-col h4{font-family:var(--font-mono);font-weight:500;font-size:11.5px;letter-spacing:.16em;text-transform:uppercase;color:var(--on-dark-faint);margin-bottom:16px}
.foot-col ul{list-style:none;padding:0;display:flex;flex-direction:column;gap:10px;font-size:14.5px}
.foot-col a{text-decoration:none;color:var(--on-dark-muted);transition:color .2s ease}
.foot-col a:hover{color:#fff}
.foot-word{font-family:var(--font-display);font-weight:500;letter-spacing:-.045em;line-height:.85;font-size:clamp(72px,17vw,250px);
  color:rgba(255,255,255,.045);user-select:none;padding-block:8px 0;white-space:nowrap;overflow:hidden}
.foot-base{border-top:1px solid var(--line-dark);padding-block:22px 28px;display:flex;justify-content:space-between;gap:14px;flex-wrap:wrap;font-size:13px;color:var(--on-dark-faint)}
.foot-base a{text-decoration:none;color:inherit}
.foot-base a:hover{color:#fff}
.langs{display:flex;gap:4px 14px;flex-wrap:wrap;padding-block:0 30px;font-size:12.5px;color:var(--on-dark-faint)}
.langs a{text-decoration:none}
.langs a:hover{color:#fff}
.langs b{color:var(--on-dark-muted);font-weight:600}
@media (max-width:900px){.foot-top{grid-template-columns:1fr 1fr;gap:32px}.foot-top>div:first-child{grid-column:1/-1}}
@media (max-width:520px){.foot-top{grid-template-columns:1fr}}

/* ---------- prose (articles, legal, pillar pages) ---------- */
.prose{font-size:18px;line-height:1.7;color:var(--ink-2)}
.prose>*+*{margin-top:1.15em}
.prose h2{font-size:clamp(28px,3vw,36px);margin-top:2.2em;color:var(--ink)}
.prose h3{font-size:22px;margin-top:1.8em;color:var(--ink)}
.prose h2+p,.prose h3+p{margin-top:.6em}
.prose a{color:var(--leaf-deep);text-decoration:underline;text-decoration-thickness:1px;text-underline-offset:3px;text-decoration-color:rgba(29,122,56,.4)}
.prose a:hover{text-decoration-color:currentColor}
.prose ul,.prose ol{padding-left:1.3em}
.prose li+li{margin-top:.4em}
.prose li::marker{color:var(--leaf-deep)}
.prose blockquote{border-left:2px solid var(--leaf);padding:4px 0 4px 22px;color:var(--muted);font-size:1.05em}
.prose hr{border:0;border-top:1px solid var(--line);margin-block:2.4em}
.prose code{font-family:var(--font-mono);background:var(--dew-2);border-radius:6px;padding:2px 6px;font-size:.88em}
.prose img{border-radius:var(--r-md)}
.prose strong{color:var(--ink);font-weight:600}
.prose figure{margin-block:2em}
.prose figcaption{font-size:14px;color:var(--muted);margin-top:10px}
.prose p:first-of-type{font-size:1.06em}