/* Wren's stream. Light = daylight in a clear brook; dark = the same brook at night. */
:root{
  --ink:#10262b;--muted:#3b5a60;--link:#0a5a68;--accent:#b4531a;--on-accent:#fff;
  --panel:rgba(252,254,252,.93);--panel-rule:#b9d6d3;--chip:#e3f2ef;
  --sky:#dff4ef;--mid:#6bb8b6;--deep:#17555f;--bed:#0d2d33;
  --serif:'Palatino Linotype',Palatino,'Book Antiqua',Georgia,serif;
}
@media (prefers-color-scheme:dark){:root{
  --ink:#e2f1ec;--muted:#a8c6c1;--link:#86dcd4;--accent:#ffb36b;--on-accent:#1b1208;
  --panel:rgba(7,22,27,.93);--panel-rule:#27464b;--chip:#10303a;
  --sky:#17444d;--mid:#0d2c36;--deep:#061a22;--bed:#02090d;
}}
*{box-sizing:border-box}html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
body{margin:0;color:var(--ink);font:1.125rem/1.65 var(--serif);
  background:linear-gradient(var(--sky),var(--mid) 35%,var(--deep) 70%,var(--bed));min-height:100vh}
#water{position:fixed;inset:0;width:100%;height:100%;z-index:0;pointer-events:auto;touch-action:pan-y}
header,main,footer{position:relative;z-index:1}
a{color:var(--link)}a:focus-visible,button:focus-visible{outline:3px solid var(--accent);outline-offset:3px}
.skip{position:absolute;left:-999px;z-index:9}.skip:focus{left:1rem;top:1rem;background:var(--panel);padding:.5rem .8rem;border-radius:.4rem}
header{max-width:62rem;margin:0 auto;padding:1rem 1rem 0;display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:.5rem}
.mark{display:inline-flex;align-items:center;gap:.5rem;background:var(--panel);border:1px solid var(--panel-rule);border-radius:2rem;color:var(--ink);font:inherit;font-weight:bold;letter-spacing:.04em;cursor:pointer;padding:.25rem .9rem .25rem .5rem;min-height:44px}
.mark svg{width:3rem;height:auto;color:var(--accent)}
nav{background:var(--panel);border:1px solid var(--panel-rule);border-radius:2rem;padding:.35rem .6rem;display:flex;flex-wrap:wrap}
nav a{padding:.45rem .7rem;font-size:.95rem;text-decoration:none;border-radius:2rem;min-height:36px;display:inline-flex;align-items:center}
nav a:hover{background:var(--chip)}nav a[aria-current="page"]{background:var(--chip);font-weight:bold}
main{max-width:62rem;margin:0 auto;padding:0 1rem 3rem}
.station{margin:0 0 4.5rem;scroll-margin-top:1rem}
.hero{min-height:78vh;display:flex;flex-direction:column;justify-content:center;padding:2rem 0}
h1{font-size:clamp(2.6rem,9vw,5.6rem);line-height:1.02;margin:.2em 0;font-style:italic;font-weight:normal;letter-spacing:-.02em;max-width:14ch}
.lede{font-size:clamp(1.15rem,3vw,1.5rem);max-width:34rem;margin:.4em 0 1.2em;color:var(--ink)}
.hero .hint{font-size:.95rem;color:var(--muted);max-width:34rem}
.hero .hint b{color:var(--ink)}
.panel{background:var(--panel);border:1px solid var(--panel-rule);border-radius:1.2rem;padding:1.4rem clamp(1rem,3vw,2rem);max-width:44rem;box-shadow:0 10px 40px rgba(0,30,40,.15)}
.panel.wide{max-width:50rem}
.panel h2,.page h2{font-size:clamp(1.6rem,4.5vw,2.4rem);font-style:italic;font-weight:normal;margin:.1em 0 .3em;border:0;padding:0}
h3{font-size:1.1rem;margin:1.2rem 0 .2rem;color:var(--accent)}
.depth{display:inline-block;font:.8rem/1 ui-monospace,monospace;letter-spacing:.08em;text-transform:uppercase;color:var(--muted);background:var(--chip);border-radius:2rem;padding:.35rem .7rem;margin-bottom:.5rem}
p,li,dd,dt{overflow-wrap:anywhere}code{font:.9em ui-monospace,monospace;white-space:pre-wrap;background:var(--chip);padding:0 .25em;border-radius:.2em}
.aside{font-size:.95rem;color:var(--muted)}
.note{border-left:4px solid var(--accent);padding:.1rem 1rem;margin:1.2rem 0;color:var(--muted)}
.btn{font:inherit;font-weight:bold;background:var(--accent);color:var(--on-accent);border:0;border-radius:2rem;padding:.7rem 1.4rem;cursor:pointer;min-height:44px}
.btn:hover{filter:brightness(1.08)}.btn[disabled]{opacity:.6;cursor:wait}
.btn.quiet{background:var(--chip);color:var(--ink);border:1px solid var(--panel-rule)}
.result{background:var(--chip);border-radius:.8rem;padding:.2rem 1.1rem;margin-top:1rem;min-height:5rem}
.result h3{margin-top:.9rem}
.row{display:flex;flex-wrap:wrap;gap:.8rem;list-style:none;padding:0;margin:1rem 0}
.row li{flex:1 1 11rem}.row a{display:block;border:1px solid var(--panel-rule);border-radius:1rem;padding:.8rem 1rem;text-decoration:none;background:var(--chip)}
.row a:hover{border-color:var(--accent)}.row small{display:block;color:var(--muted)}
.page{max-width:44rem;margin:1rem auto 0;background:var(--panel);border:1px solid var(--panel-rule);border-radius:1.2rem;padding:1.2rem clamp(1rem,3vw,2rem) 1.6rem}
.page h1{font-size:clamp(2rem,6vw,3rem);max-width:none;line-height:1.1}
.page .card{background:var(--chip);border-radius:.8rem;padding:.1rem 1.1rem .6rem;margin:1rem 0}
.page .card h3{margin-top:.9rem}
.page p.lede{font-size:1.2rem;color:var(--muted)}
footer{max-width:62rem;margin:0 auto 2rem;padding:0 1rem}
footer>div{background:var(--panel);border:1px solid var(--panel-rule);border-radius:1.2rem;padding:1rem 1.4rem;font-size:.95rem;color:var(--muted);max-width:44rem}
footer ul{list-style:none;padding:0;display:flex;flex-wrap:wrap;gap:.4rem 1.2rem;margin:.6rem 0 0}
#gauge{position:fixed;right:1.6rem;top:50%;transform:translateY(-50%);z-index:2;display:flex;flex-direction:column;align-items:center;gap:.4rem;pointer-events:none}
#gauge .track{width:3px;height:28vh;background:var(--panel-rule);border-radius:2px;position:relative}
#gauge .dot{position:absolute;left:50%;width:11px;height:11px;margin-left:-5px;border-radius:50%;background:var(--accent);top:0}
#gauge .label{font:.75rem/1.2 ui-monospace,monospace;color:var(--ink);background:var(--panel);border:1px solid var(--panel-rule);border-radius:1rem;padding:.25rem .6rem;white-space:nowrap}
.sound{display:inline-flex;gap:.6rem;align-items:center}
.wiggle{animation:wig .7s ease-in-out 2}
@keyframes wig{0%,100%{transform:rotate(0)}25%{transform:rotate(-12deg)}75%{transform:rotate(10deg)}}
@media (prefers-reduced-motion:reduce){.wiggle{animation:none}}
.bar{fill:var(--accent)}#bars svg{width:100%;height:auto;max-width:560px;display:block}
@media (max-width:40rem){#gauge{display:none}h1{max-width:none}}
#toast{position:fixed;left:1rem;bottom:1rem;z-index:3;max-width:min(26rem,calc(100vw - 2rem));margin:0;background:var(--panel);border:1px solid var(--panel-rule);border-radius:1rem;padding:.6rem 1rem;font-size:.95rem;box-shadow:0 6px 24px rgba(0,30,40,.2)}#toast:empty{display:none}
@media (min-width:56rem){.station:nth-of-type(even) .panel{margin-left:auto}.station:nth-of-type(3) .panel{margin-left:6rem}}
@media (max-width:40rem){.hero{min-height:auto;padding:2.2rem 0 1.5rem}header{gap:.4rem}nav{width:100%;justify-content:space-between}}