/* m3 baseline tokens. ring.js swaps these for a generated tonal spot scheme */
:root {
  --primary:#6750a4; --on-primary:#fff; --primary-container:#eaddff; --on-primary-container:#4f378b;
  --secondary:#625b71; --on-secondary:#fff; --secondary-container:#e8def8; --on-secondary-container:#4a4458;
  --surface:#fef7ff; --on-surface:#1d1b20; --on-surface-variant:#49454f;
  --surface-container-lowest:#fff; --surface-container-low:#f7f2fa; --surface-container:#f3edf7;
  --surface-container-high:#ece6f0; --surface-container-highest:#e6e0e9;
  --outline:#79747e; --outline-variant:#cac4d0;
  --inverse-surface:#322f35; --inverse-on-surface:#f5eff7; --inverse-primary:#d0bcff;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) { :root:not([data-mode=light]) { --dark: 1; } }
:root[data-mode=dark] { --dark: 1; }
@media (prefers-color-scheme: dark) { :root:not([data-mode=light]) {
  --primary:#d0bcff; --on-primary:#381e72; --primary-container:#4f378b; --on-primary-container:#eaddff;
  --secondary:#ccc2dc; --on-secondary:#332d41; --secondary-container:#4a4458; --on-secondary-container:#e8def8;
  --surface:#141218; --on-surface:#e6e0e9; --on-surface-variant:#cac4d0;
  --surface-container-lowest:#0f0d13; --surface-container-low:#1d1b20; --surface-container:#211f26;
  --surface-container-high:#2b2930; --surface-container-highest:#36343b;
  --outline:#938f99; --outline-variant:#49454f;
  --inverse-surface:#e6e0e9; --inverse-on-surface:#322f35; --inverse-primary:#6750a4;
  color-scheme: dark;
}}
:root[data-mode=dark] {
  --primary:#d0bcff; --on-primary:#381e72; --primary-container:#4f378b; --on-primary-container:#eaddff;
  --secondary:#ccc2dc; --on-secondary:#332d41; --secondary-container:#4a4458; --on-secondary-container:#e8def8;
  --surface:#141218; --on-surface:#e6e0e9; --on-surface-variant:#cac4d0;
  --surface-container-lowest:#0f0d13; --surface-container-low:#1d1b20; --surface-container:#211f26;
  --surface-container-high:#2b2930; --surface-container-highest:#36343b;
  --outline:#938f99; --outline-variant:#49454f;
  --inverse-surface:#e6e0e9; --inverse-on-surface:#322f35; --inverse-primary:#6750a4;
  color-scheme: dark;
}

:root {
  /* m3 expressive motion: spatial springs overshoot, effects springs don't */
  --spring: linear(0, .009, .035 2.1%, .141 4.4%, .723 12.9%, .938 16.7%, 1.017 19.4%, 1.067, 1.099 24.3%,
    1.108 26%, 1.103 28%, 1.073 32.6%, 1.007 41.9%, .987 46.4%, .985 50.6%, 1.001 66.7%, 1);
  --spring-fast: 350ms var(--spring);
  --spring-slow: 650ms var(--spring);
  --effects: 200ms cubic-bezier(.2, 0, 0, 1);
  --font: "Google Sans Flex", "Roboto Flex", system-ui, sans-serif;
  --mono: "Google Sans Code", ui-monospace, monospace;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 80px; }
body {
  margin: 0; background: var(--surface); color: var(--on-surface);
  font: 400 16px/24px var(--font); font-variation-settings: "ROND" 30;
  -webkit-font-smoothing: antialiased;
  transition: background-color var(--effects), color var(--effects);
}
h1, h2, p { margin: 0; }
a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; border: 0; background: none; padding: 0; cursor: pointer; }
.ms {
  font-family: "Material Symbols Rounded"; font-weight: normal; font-style: normal;
  font-size: 24px; line-height: 1; letter-spacing: 0; white-space: nowrap; direction: ltr;
  font-variation-settings: "FILL" 1, "wght" 500, "GRAD" 0, "opsz" 24;
  -webkit-font-feature-settings: "liga"; user-select: none; flex: none;
}
.muted { color: var(--on-surface-variant); }
:focus-visible { outline: 3px solid var(--primary); outline-offset: 3px; }

/* ---------- app bar ---------- */
.appbar {
  position: sticky; top: 0; z-index: 20; display: flex; align-items: center; gap: 8px;
  height: 64px; padding: 0 12px 0 16px; background: var(--surface);
  transition: background-color var(--effects);
}
.appbar.scrolled { background: var(--surface-container); }
.brand { display: flex; align-items: center; gap: 10px; padding: 8px; border-radius: 99px;
  font: 22px/28px var(--font); font-variation-settings: "wght" 650, "ROND" 100, "wdth" 110; letter-spacing: -.3px; }
.brand-mark { width: 32px; height: 32px; fill: var(--primary); transition: transform var(--spring-slow); }
.brand:hover .brand-mark { transform: rotate(80deg) scale(1.1); }
.spacer { flex: 1; }

/* ---------- buttons (state layer + press morph) ---------- */
.btn, .icon-btn, .seg, .fab, .row, .swatch, .toolbar a {
  position: relative; overflow: hidden; isolation: isolate; -webkit-tap-highlight-color: transparent;
}
.btn::before, .icon-btn::before, .seg::before, .fab::before, .row::before, .toolbar a::before {
  content: ""; position: absolute; inset: 0; z-index: -1; background: currentColor; opacity: 0;
  transition: opacity var(--effects);
}
:is(.btn, .icon-btn, .seg, .fab, .row, .toolbar a):hover::before { opacity: .08; }
:is(.btn, .icon-btn, .seg, .fab, .row, .toolbar a):active::before { opacity: .12; }
.ripple-wave {
  position: absolute; z-index: -1; border-radius: 50%; background: currentColor; opacity: .14;
  transform: scale(0); animation: ripple 550ms cubic-bezier(.2, 0, 0, 1) forwards; pointer-events: none;
}
@keyframes ripple { to { transform: scale(1); opacity: 0; } }

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px; white-space: nowrap;
  border-radius: calc(var(--h) / 2); height: var(--h); padding: 0 var(--pad);
  font: var(--fs)/1 var(--font); font-variation-settings: "wght" 560, "ROND" 60;
  transition: border-radius var(--spring-fast), transform var(--spring-fast), background-color var(--effects);
}
.btn .ms { font-size: var(--ic); }
.btn:active { border-radius: var(--pressed); }
.btn.s { --h: 40px; --pad: 16px; --fs: 14px; --ic: 20px; --pressed: 8px; }
.btn.m { --h: 56px; --pad: 24px; --fs: 16px; --ic: 24px; --pressed: 12px; }
.btn.l { --h: 96px; --pad: 48px; --fs: 24px; --ic: 32px; --pressed: 28px; gap: 12px; }
.btn.filled { background: var(--primary); color: var(--on-primary); }
.btn.tonal { background: var(--secondary-container); color: var(--on-secondary-container); }

.icon-btn {
  width: 48px; height: 48px; display: grid; place-items: center; border-radius: 24px;
  transition: border-radius var(--spring-fast);
}
.icon-btn:active { border-radius: 14px; }
.icon-btn.tonal { background: var(--surface-container-high); color: var(--on-surface-variant); }

/* ---------- connected button group ---------- */
.group { display: flex; gap: 2px; }
.seg {
  flex: 1; display: inline-flex; align-items: center; justify-content: center; gap: 6px;
  height: 40px; padding: 0 16px; border-radius: 8px;
  background: var(--secondary-container); color: var(--on-secondary-container);
  font: 14px/1 var(--font); font-variation-settings: "wght" 560, "ROND" 60;
  transition: border-radius var(--spring-fast), background-color var(--effects), color var(--effects), flex-grow var(--spring-fast);
}
.seg .ms { font-size: 20px; }
.seg:first-child { border-radius: 20px 8px 8px 20px; }
.seg:last-child { border-radius: 8px 20px 20px 8px; }
.seg:active { border-radius: 6px; }
.seg[aria-checked=true] { background: var(--primary); color: var(--on-primary); border-radius: 20px; }
.group.big .seg { height: 56px; border-radius: 10px; font-size: 16px; flex: 0 0 auto; padding: 0 20px; }
.group.big .seg.icon { width: 64px; padding: 0; }
.group.big .seg:first-child { border-radius: 28px 10px 10px 28px; }
.group.big .seg:last-child { border-radius: 10px 28px 28px 10px; }
.group.big .seg:active { border-radius: 8px; }
.group.big .seg:hover { flex-grow: 0; }

/* ---------- theme menu ---------- */
.menu {
  position: fixed; inset: 64px 12px auto auto; margin: 0; width: min(320px, calc(100vw - 24px));
  padding: 20px; border: 0; border-radius: 28px; color: var(--on-surface);
  background: var(--surface-container-high);
  box-shadow: 0 2px 6px 2px rgb(0 0 0 / .15), 0 1px 2px rgb(0 0 0 / .3);
  transform-origin: top right;
  transition: opacity var(--effects), transform var(--spring-fast), display .35s allow-discrete, overlay .35s allow-discrete;
  opacity: 0; transform: scale(.85);
}
.menu:popover-open { opacity: 1; transform: none; }
@starting-style { .menu:popover-open { opacity: 0; transform: scale(.85); } }
.menu-label { font: 12px/16px var(--font); font-variation-settings: "wght" 600; letter-spacing: .5px;
  text-transform: uppercase; color: var(--on-surface-variant); margin: 0 0 12px 4px; }
.menu .group { margin-top: 0; }
.swatches { display: grid; grid-template-columns: repeat(6, 1fr); gap: 6px; margin-bottom: 20px; }
.swatch {
  aspect-ratio: 1; border-radius: 50%; display: grid; place-items: center;
  background: conic-gradient(from 90deg, var(--b, #aaa) 0 25%, var(--c, #ccc) 0 50%, var(--a, #888) 0);
  transition: border-radius var(--spring-fast), transform var(--spring-fast);
}
.swatch .ms { font-size: 20px; color: #fff; opacity: 0; transform: scale(.4);
  transition: opacity var(--effects), transform var(--spring-fast);
  background: var(--a, #888); border-radius: 50%; padding: 4px; }
.swatch:hover { transform: scale(1.06); }
.swatch[aria-checked=true] { border-radius: 30%; }
.swatch[aria-checked=true] .ms { opacity: 1; transform: none; }

/* ---------- layout ---------- */
main { overflow-x: clip; max-width: 1040px; margin: 0 auto; padding: 8px 16px 160px; display: grid; grid-template-columns: minmax(0, 1fr); gap: 56px; }
.sec-head { display: flex; align-items: center; gap: 12px; margin: 0 8px 16px; }
h2 { font: 32px/40px var(--font); font-variation-settings: "wght" 600, "ROND" 100, "wdth" 105; letter-spacing: -.5px; }
.count { min-width: 32px; height: 32px; padding: 0 10px; display: grid; place-items: center; border-radius: 16px;
  background: var(--primary); color: var(--on-primary); font-size: 14px; font-variation-settings: "wght" 700; }

/* ---------- hero ---------- */
.hero { display: grid; grid-template-columns: minmax(0, 1.1fr) minmax(0, 1fr); align-items: center; gap: 32px; min-height: min(calc(100svh - 160px), 720px); }
.hero-copy { min-width: 0; display: grid; justify-items: start; gap: 24px; }
.chip { display: inline-flex; align-items: center; gap: 8px; height: 32px; padding: 0 14px 0 10px; border-radius: 8px;
  border: 1px solid var(--outline-variant); color: var(--on-surface-variant);
  font: 14px/1 var(--font); font-variation-settings: "wght" 560; }
.chip .ms { font-size: 18px; color: var(--primary); }
.display {
  white-space: nowrap;
  font: clamp(88px, 15vw, 168px)/.84 var(--font); letter-spacing: -.045em; color: var(--primary);
  font-variation-settings: "wght" 820, "wdth" 120, "ROND" 100, "opsz" 144;
  transition: font-variation-settings 900ms var(--spring);
}
.display:hover { font-variation-settings: "wght" 900, "wdth" 128, "ROND" 100, "opsz" 144; }
.lede { max-width: 30ch; font-size: 20px; line-height: 30px; color: var(--on-surface-variant); }
.actions { display: flex; flex-wrap: wrap; gap: 8px; }

.orbit { --size: min(440px, 86vw); --seat: calc(var(--size) * .16); position: relative;
  width: var(--size); aspect-ratio: 1; justify-self: center; }
.track { position: absolute; inset: calc(var(--seat) / 2); border-radius: 50%;
  border: 2px dashed var(--outline-variant); }
.core { position: absolute; inset: 27%; display: grid; place-items: center; }
.morph { position: absolute; inset: 0; width: 100%; height: 100%; fill: var(--primary-container); overflow: visible; }
.core-text { position: relative; display: grid; justify-items: center; color: var(--on-primary-container); }
.core-text b { font: calc(var(--size) * .2)/.9 var(--font); font-variation-settings: "wght" 800, "ROND" 100, "wdth" 110; }
.core-text span { font-size: 15px; font-variation-settings: "wght" 560; }
.spinner { position: absolute; inset: 0; animation: spin 90s linear infinite; }
.seat { position: absolute; left: 50%; top: 50%; width: var(--seat); height: var(--seat);
  margin: calc(var(--seat) / -2);
  transform: rotate(calc(var(--i) * 360deg / var(--n))) translateY(calc(var(--size) / -2 + var(--seat) / 2)) rotate(calc(var(--i) * -360deg / var(--n))); }
.upright { width: 100%; height: 100%; animation: spin 90s linear infinite reverse; }
@keyframes spin { to { transform: rotate(360deg); } }
.orbit:hover :is(.spinner, .upright) { animation-play-state: paused; }
.empty { width: 100%; height: 100%; display: grid; place-items: center; border-radius: 50%;
  background: var(--surface-container); color: var(--outline); }
.empty .ms { font-size: calc(var(--seat) * .36); }

/* shape avatars */
.avatar { display: block; width: 100%; height: 100%; position: relative; transition: transform var(--spring-slow); }
.avatar svg { width: 100%; height: 100%; display: block; overflow: visible; }
.avatar path { transition: fill var(--effects); }
.avatar text { text-anchor: middle; dominant-baseline: central; font: 40px var(--font);
  font-variation-settings: "wght" 700, "ROND" 100; }
.avatar.s0 path { fill: var(--primary); } .avatar.s0 text { fill: var(--on-primary); }
.avatar.s1 path { fill: var(--secondary-container); } .avatar.s1 text { fill: var(--on-secondary-container); }
a.avatar:hover { transform: scale(1.18) rotate(-12deg); }
.avatar[data-tip]::after { content: attr(data-tip); position: absolute; left: 50%; top: calc(100% + 6px);
  transform: translateX(-50%) scale(.8); opacity: 0; padding: 4px 8px; border-radius: 4px;
  background: var(--inverse-surface); color: var(--inverse-on-surface); font-size: 12px; white-space: nowrap;
  transition: opacity var(--effects), transform var(--spring-fast); pointer-events: none; }
.avatar[data-tip]:hover::after { opacity: 1; transform: translateX(-50%) rotate(12deg); }

/* ---------- segmented list ---------- */
.seglist { list-style: none; margin: 0; padding: 0; display: grid; gap: 2px; }
.seglist .row { display: flex; align-items: center; gap: 16px; min-height: 72px; padding: 12px 16px 12px 16px;
  background: var(--surface-container); border-radius: 4px;
  transition: border-radius var(--spring-fast), background-color var(--effects); }
.seglist li:first-child .row { border-top-left-radius: 24px; border-top-right-radius: 24px; }
.seglist li:last-child .row { border-bottom-left-radius: 24px; border-bottom-right-radius: 24px; }
.seglist a.row:hover { border-radius: 24px; }
.avatar.sm { width: 48px; height: 48px; flex: none; }
.row:hover .avatar.sm { transform: rotate(45deg); }
.row:hover .avatar.sm text { transform-box: fill-box; }
.row-text { flex: 1; min-width: 0; display: grid; }
.row-text b { font-variation-settings: "wght" 600, "ROND" 60; font-size: 17px; display: flex; align-items: center; gap: 8px; }
.row-text small { font-size: 14px; color: var(--on-surface-variant); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.tag { font-size: 11px; line-height: 20px; padding: 0 8px; border-radius: 10px; letter-spacing: .3px;
  background: var(--primary-container); color: var(--on-primary-container); font-variation-settings: "wght" 650; }
.pos { font-family: var(--mono); font-size: 13px; color: var(--on-surface-variant); }
.trail { width: 40px; height: 40px; display: grid; place-items: center; border-radius: 20px;
  color: var(--on-surface-variant); transition: background-color var(--effects), color var(--effects), border-radius var(--spring-fast); }
a.row:hover .trail { background: var(--primary); color: var(--on-primary); border-radius: 12px; }

/* ---------- embed panel ---------- */
.panel { display: grid; grid-template-columns: 1.3fr 1fr; gap: 32px; padding: 32px;
  border-radius: 40px; background: var(--surface-container-low); }
.embed-copy { display: grid; justify-items: start; gap: 16px; min-width: 0; }
.embed-copy p { max-width: 46ch; }
.field { position: relative; display: block; width: min(100%, 360px); margin-top: 8px; }
.field input { width: 100%; height: 56px; padding: 24px 16px 8px; border: 0; border-radius: 4px 4px 0 0;
  background: var(--surface-container-highest); color: var(--on-surface); font: 16px var(--font);
  box-shadow: inset 0 -1px var(--on-surface-variant); outline: 0; transition: box-shadow var(--effects); }
.field input:focus { box-shadow: inset 0 -3px var(--primary); }
.field span { position: absolute; left: 16px; top: 8px; font-size: 12px; line-height: 16px; color: var(--on-surface-variant);
  pointer-events: none; transition: color var(--effects); }
.field input:focus + span { color: var(--primary); }
pre { margin: 0; width: 100%; padding: 16px 20px; border-radius: 20px; overflow-x: auto;
  background: var(--surface-container-highest); font: 13px/1.75 var(--mono); color: var(--on-surface-variant); }
.preview { display: grid; align-content: center; justify-items: center; gap: 8px; padding: 32px 16px;
  border-radius: 28px; background: var(--surface); }
.preview .menu-label { margin: 0 0 8px; }

/* ---------- join ---------- */
.join { position: relative; overflow: hidden; display: grid; justify-items: start; gap: 24px;
  padding: 48px 40px; border-radius: 48px; background: var(--primary-container); color: var(--on-primary-container); }
.join h2 { font-size: clamp(44px, 8vw, 72px); line-height: .95; font-variation-settings: "wght" 800, "ROND" 100, "wdth" 115; }
.join-shape { position: absolute; right: -60px; top: -60px; width: 340px; height: 340px; fill: var(--primary);
  opacity: .14; animation: spin 40s linear infinite; }
.join-icon { width: 64px; height: 64px; display: grid; place-items: center; border-radius: 20px;
  background: var(--primary); color: var(--on-primary); font-size: 32px; }
.steps { list-style: none; margin: 0; padding: 0; display: grid; gap: 12px; font-size: 18px; line-height: 26px; }
.steps li { display: flex; align-items: center; gap: 14px; }
.steps span { flex: none; width: 32px; height: 32px; display: grid; place-items: center; border-radius: 10px;
  background: var(--on-primary-container); color: var(--primary-container); font-size: 15px; font-variation-settings: "wght" 750; }
.join .btn { margin-top: 8px; position: relative; }

footer { text-align: center; color: var(--on-surface-variant); font-size: 14px; }

/* ---------- floating toolbar + fab ---------- */
.dock { position: fixed; left: 50%; bottom: 16px; z-index: 30; transform: translateX(-50%);
  display: flex; align-items: center; gap: 8px; }
.toolbar { display: flex; gap: 4px; padding: 8px; border-radius: 32px;
  background: var(--primary-container); color: var(--on-primary-container);
  box-shadow: 0 3px 8px rgb(0 0 0 / .14), 0 1px 3px rgb(0 0 0 / .2); }
.toolbar a { display: flex; align-items: center; gap: 0; height: 48px; padding: 0 12px; border-radius: 24px;
  transition: background-color var(--effects), color var(--effects), padding var(--spring-fast), gap var(--spring-fast); }
.toolbar .lbl { display: inline-block; max-width: 0; overflow: hidden; white-space: nowrap; opacity: 0;
  font-size: 14px; font-variation-settings: "wght" 600, "ROND" 60;
  transition: max-width var(--spring-fast), opacity var(--effects); }
.toolbar a.on { background: var(--primary); color: var(--on-primary); gap: 8px; padding: 0 16px 0 14px; }
.toolbar a.on .lbl { max-width: 80px; opacity: 1; }
.fab { width: 64px; height: 64px; display: grid; place-items: center; border-radius: 20px;
  background: var(--primary); color: var(--on-primary);
  box-shadow: 0 3px 8px rgb(0 0 0 / .14), 0 1px 3px rgb(0 0 0 / .2);
  transition: border-radius var(--spring-fast), transform var(--spring-fast); }
.fab:hover { border-radius: 32px; }
.fab:active { transform: scale(.92); }
.fab .ms { font-size: 28px; }

.snackbar { position: fixed; left: 50%; bottom: 96px; z-index: 40; max-width: calc(100vw - 32px);
  transform: translate(-50%, 24px); opacity: 0; pointer-events: none;
  padding: 14px 16px; border-radius: 8px; background: var(--inverse-surface); color: var(--inverse-on-surface);
  font-size: 14px; transition: opacity var(--effects), transform var(--spring-fast); }
.snackbar.show { opacity: 1; transform: translate(-50%, 0); }

/* loading indicator shown while navigating to a random site */
.btn .loader, .fab .loader { width: 1em; height: 1em; font-size: var(--ic, 28px); fill: currentColor; }

/* ---------- entrance ---------- */
.reveal { opacity: 0; transform: translateY(32px) scale(.98);
  transition: opacity 400ms cubic-bezier(.2, 0, 0, 1), transform 800ms var(--spring); }
.reveal.in { opacity: 1; transform: none; }
html:not(.js) .reveal { opacity: 1; transform: none; }

@media (max-width: 820px) {
  main { gap: 40px; }
  .hero { grid-template-columns: minmax(0, 1fr); min-height: 0; padding-top: 16px; gap: 40px; }
  .panel { grid-template-columns: minmax(0, 1fr); padding: 24px 20px; border-radius: 32px; }
  .join { padding: 36px 24px; border-radius: 36px; }
  .btn.l { --h: 72px; --pad: 32px; --fs: 20px; --ic: 28px; --pressed: 20px; }
  .pos { display: none; }
}
@media (max-width: 420px) {
  .toolbar a { padding: 0 10px; }
  .toolbar a.on { padding: 0 12px 0 10px; }
  .fab { width: 56px; height: 56px; border-radius: 16px; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition-duration: 1ms !important; }
  .reveal { opacity: 1; transform: none; }
}
.join-lede { max-width: 52ch; font-size: 18px; line-height: 28px; }
.join .fine { font-size: 14px; opacity: .8; margin-top: -8px; }
.avatar image { transition: opacity var(--effects); }