/* =========================================================
   CurveBall — "notebook sketches on a sci-fi screen"
   Dark futuristic base · neon accents · handwritten type
   ========================================================= */

/* ---------- Tokens ---------- */
:root {
  --bg: #07070D;
  --bg-alt: #0D0D18;
  --surface: rgba(255, 255, 255, 0.04);
  --surface-solid: #12121F;
  --ink: #F2F0FF;
  --ink-soft: #A9A6C4;
  --ink-dim: #6E6B8A;
  --line: rgba(242, 240, 255, 0.14);

  --lime: #C8FF3D;
  --cyan: #3DF2FF;
  --pink: #FF4FD8;
  --ball: #FF6A3D;

  --accent: var(--lime);
  --accent-ink: #07070D;

  --glow-lime: 0 0 24px rgba(200, 255, 61, .45);
  --glow-cyan: 0 0 24px rgba(61, 242, 255, .45);
  --glow-pink: 0 0 24px rgba(255, 79, 216, .45);

  /* hand-drawn box shapes */
  --sketch-a: 255px 18px 225px 18px / 18px 225px 18px 255px;
  --sketch-b: 18px 225px 18px 255px / 255px 18px 225px 18px;
  --sketch-pill: 60px 46px 54px 40px / 40px 54px 46px 60px;

  --font-hand: "Caveat", "Comic Sans MS", cursive;
  --font-body: "Space Grotesk", system-ui, -apple-system, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, monospace;
  color-scheme: dark;
}

/* ---------- Base ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 84px; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background:
    radial-gradient(1200px 600px at 85% -10%, rgba(255, 79, 216, .10), transparent 60%),
    radial-gradient(900px 500px at -10% 30%, rgba(61, 242, 255, .08), transparent 60%),
    var(--bg);
  color: var(--ink);
  font: 400 17px/1.6 var(--font-body);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
/* faint graph-paper grid over everything */
body::before {
  content: ""; position: fixed; inset: 0; pointer-events: none; z-index: -1;
  background-image:
    linear-gradient(var(--line) 1px, transparent 1px),
    linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 48px 48px;
  opacity: .22;
  mask-image: radial-gradient(ellipse at center, #000 30%, transparent 80%);
}
img, svg { display: block; max-width: 100%; }
a { color: var(--cyan); }
h1, h2, h3, h4 { font-family: var(--font-hand); font-weight: 700; line-height: .95; margin: 0; letter-spacing: 0; }
h1 { font-size: clamp(3.2rem, 7.4vw, 6.6rem); }
h2 { font-size: clamp(2.8rem, 6vw, 4.8rem); }
h3 { font-size: 2.1rem; line-height: 1; }
h4 { font-size: 1.5rem; }
p { margin: 0; }
:focus-visible { outline: 2px dashed var(--cyan); outline-offset: 4px; border-radius: 6px; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }

.wrap { width: min(1180px, 100% - 32px); margin-inline: auto; }
.wrap--narrow { width: min(800px, 100% - 32px); }

.skip { position: absolute; left: 16px; top: -60px; z-index: 100; background: var(--lime); color: var(--accent-ink); padding: 10px 16px; border-radius: 10px; }
.skip:focus { top: 12px; }

.eyebrow {
  display: inline-flex; align-items: center; gap: 10px;
  font: 500 .78rem/1 var(--font-mono); letter-spacing: .12em; text-transform: uppercase;
  color: var(--cyan); margin-bottom: 18px;
}
.eyebrow::before { content: "//"; color: var(--pink); }

.scribble { font-family: var(--font-hand); font-size: 1.6rem; color: var(--lime); }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 10px;
  min-height: 52px; padding: 0 26px;
  background: var(--lime); color: var(--accent-ink);
  font: 700 1.6rem/1 var(--font-hand); text-decoration: none;
  border: 2px solid var(--lime); border-radius: var(--sketch-pill); cursor: pointer;
  box-shadow: var(--glow-lime);
  transition: transform .2s ease, box-shadow .2s ease, background .2s ease;
}
.btn svg { width: 22px; height: 22px; fill: none; stroke: currentColor; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
.btn:hover { transform: translateY(-2px) rotate(-1deg); box-shadow: 0 0 40px rgba(200, 255, 61, .7); }
.btn:active { transform: translateY(1px) scale(.98); }
.btn:disabled { opacity: .5; cursor: progress; }
.btn--ghost, .btn--ghost-light { background: transparent; color: var(--ink); border-color: var(--ink-soft); box-shadow: none; }
.btn--ghost:hover, .btn--ghost-light:hover { border-color: var(--cyan); color: var(--cyan); box-shadow: var(--glow-cyan); }
.btn--sm { min-height: 44px; padding: 0 18px; font-size: 1.35rem; }
.btn--big { min-height: 64px; padding: 0 40px; font-size: 2rem; }
.btn--block { width: 100%; }

/* ---------- Nav ---------- */
.nav {
  position: sticky; top: 0; z-index: 50;
  background: rgba(7, 7, 13, .62);
  backdrop-filter: saturate(1.5) blur(16px);
  -webkit-backdrop-filter: saturate(1.5) blur(16px);
  border-bottom: 1px solid transparent; transition: border-color .2s ease;
}
.nav.is-scrolled { border-bottom-color: var(--line); }
.nav__inner { display: flex; align-items: center; justify-content: space-between; height: 72px; }
.brand { display: inline-flex; align-items: center; gap: 10px; text-decoration: none; color: var(--ink); font: 700 2rem/1 var(--font-hand); }
.brand__mark { width: 32px; height: 32px; color: var(--ball); filter: drop-shadow(0 0 8px rgba(255, 106, 61, .7)); }
.nav__links { display: flex; align-items: center; gap: 24px; }
.nav__links a:not(.btn) { text-decoration: none; color: var(--ink-soft); font: 500 .85rem/1 var(--font-mono); letter-spacing: .04em; }
.nav__links a:not(.btn):hover { color: var(--lime); text-shadow: var(--glow-lime); }
.nav__toggle { display: none; }

@media (max-width: 900px) {
  .nav__toggle { display: grid; place-content: center; gap: 6px; width: 44px; height: 44px; background: none; border: 0; cursor: pointer; color: var(--ink); }
  .nav__toggle span { display: block; width: 24px; height: 2px; background: currentColor; border-radius: 2px; transition: transform .25s ease; }
  .nav__toggle[aria-expanded="true"] span:first-child { transform: translateY(4px) rotate(45deg); }
  .nav__toggle[aria-expanded="true"] span:last-child { transform: translateY(-4px) rotate(-45deg); }
  .nav__links {
    position: absolute; inset: 72px 0 auto 0; display: none;
    flex-direction: column; align-items: stretch; gap: 4px; padding: 12px 16px 20px;
    background: rgba(7, 7, 13, .96); border-bottom: 1px solid var(--line);
  }
  .nav__links.is-open { display: flex; }
  .nav__links a:not(.btn) { padding: 14px 4px; font-size: 1rem; }
  .nav__links .btn { margin-top: 8px; }
}

/* ---------- Hero ---------- */
.hero { position: relative; overflow: hidden; padding: clamp(40px, 7vw, 88px) 0 clamp(64px, 9vw, 110px); isolation: isolate; }
.hero__floor {
  position: absolute; left: -50%; right: -50%; bottom: -10%; height: 60%; z-index: -1;
  background-image:
    linear-gradient(rgba(255, 79, 216, .5) 1px, transparent 1px),
    linear-gradient(90deg, rgba(61, 242, 255, .4) 1px, transparent 1px);
  background-size: 60px 60px;
  transform: perspective(500px) rotateX(62deg);
  transform-origin: bottom;
  mask-image: linear-gradient(to top, #000 10%, transparent 90%);
  animation: floor 3s linear infinite;
  opacity: .45;
}
@keyframes floor { to { background-position: 0 60px; } }
.hero__glow {
  position: absolute; inset: 0; z-index: -1; pointer-events: none;
  background: radial-gradient(420px circle at var(--mx, 70%) var(--my, 40%), rgba(200, 255, 61, .12), transparent 60%);
}
.hero__grid { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; align-items: center; }
.hero h1 { text-shadow: 0 0 30px rgba(242, 240, 255, .15); }
.lead { margin-top: 30px; font-size: clamp(1.05rem, 1.5vw, 1.2rem); color: var(--ink-soft); max-width: 44ch; }
.curve-word { position: relative; display: inline-block; color: var(--lime); text-shadow: var(--glow-lime); transform: rotate(-3deg); }
.curve-word::after {
  content: ""; position: absolute; left: -4%; right: -4%; bottom: -.12em; height: .3em;
  background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 200 24' preserveAspectRatio='none'%3E%3Cpath d='M3 16 C 40 4, 80 22, 120 10 S 180 6, 197 14 M10 20 C 60 12, 130 22, 190 12' fill='none' stroke='%23FF4FD8' stroke-width='3.5' stroke-linecap='round'/%3E%3C/svg%3E") no-repeat center / 100% 100%;
  filter: drop-shadow(0 0 6px rgba(255, 79, 216, .8));
}

/* Throw form */
.throw {
  display: flex; gap: 8px; margin-top: 30px; padding: 8px;
  background: var(--surface); border: 1.5px solid var(--line); border-radius: var(--sketch-pill);
  backdrop-filter: blur(8px); max-width: 600px;
  transition: border-color .2s ease, box-shadow .2s ease;
}
.throw:focus-within { border-color: var(--cyan); box-shadow: var(--glow-cyan); }
.throw__arena, .throw__input {
  min-height: 48px; font: 500 1rem var(--font-body); color: var(--ink);
  background: transparent; border: 0; outline: none;
}
.throw__arena { padding: 0 8px; max-width: 132px; color: var(--cyan); cursor: pointer; border-right: 1px dashed var(--line); }
.throw__arena option { background: var(--surface-solid); color: var(--ink); }
.throw__input { flex: 1; min-width: 0; padding: 0 10px; }
.throw__input::placeholder { color: var(--ink-dim); }
.throw__btn { flex-shrink: 0; }
.throw__hint { margin-top: 12px; font: 500 .78rem/1.4 var(--font-mono); color: var(--ink-dim); }
.throw__hint.is-ok { color: var(--lime); }
@media (max-width: 560px) {
  .throw { flex-wrap: wrap; border-radius: 22px; }
  .throw__arena { max-width: none; flex: 1 0 100%; border-right: 0; border-bottom: 1px dashed var(--line); }
  .throw__btn { width: 100%; }
}

/* Playground */
.playground {
  position: relative; aspect-ratio: 1 / 1; width: 100%;
  border: 1.5px solid var(--line); border-radius: var(--sketch-a);
  background: radial-gradient(circle at 50% 50%, rgba(61, 242, 255, .06), transparent 70%), rgba(255, 255, 255, .02);
  box-shadow: inset 0 0 60px rgba(61, 242, 255, .06);
  touch-action: none; cursor: grab;
}
.playground:active { cursor: grabbing; }
.playground canvas { width: 100%; height: 100%; display: block; border-radius: inherit; }
.playground__hint { position: absolute; top: -34px; right: 12px; transform: rotate(-4deg); pointer-events: none; }
@media (max-width: 900px) {
  .hero__grid { grid-template-columns: 1fr; gap: 56px; }
  .playground { max-width: 520px; margin-inline: auto; aspect-ratio: 4 / 3.4; }
}

/* ---------- Sections ---------- */
.section { position: relative; padding: clamp(80px, 11vw, 140px) 0; }
.section--alt { background: linear-gradient(180deg, transparent, rgba(61, 242, 255, .03) 20%, rgba(61, 242, 255, .03) 80%, transparent); }
.section__head { max-width: 760px; margin-bottom: clamp(36px, 5vw, 56px); }
.section__sub { margin-top: 18px; color: var(--ink-soft); font-size: 1.1rem; }

/* ---------- Idea Wall ---------- */
.chip {
  min-height: 42px; padding: 0 16px; cursor: pointer;
  font: 500 .82rem var(--font-mono); color: var(--ink-soft);
  background: var(--surface); border: 1.5px solid var(--line); border-radius: var(--sketch-pill);
  transition: all .2s ease;
}
.chip:hover { color: var(--ink); border-color: var(--ink-soft); }
.chip.is-active { color: var(--accent-ink); background: var(--cyan); border-color: var(--cyan); box-shadow: var(--glow-cyan); }

.wall { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 22px; }
.idea {
  --c: var(--lime);
  position: relative; display: flex; flex-direction: column; gap: 12px;
  padding: 22px 22px 18px; background: var(--surface-solid);
  border: 1.5px solid color-mix(in srgb, var(--c) 45%, var(--line)); border-radius: var(--sketch-a);
  transform: rotate(var(--tilt, 0deg));
  transition: transform .3s cubic-bezier(.2, .8, .2, 1), box-shadow .3s ease;
  animation: pop-in .5s cubic-bezier(.3, 1.5, .5, 1) both;
}
.idea:nth-child(3n) { border-radius: var(--sketch-b); }
.idea:hover { transform: rotate(0deg) translateY(-6px); box-shadow: 0 0 34px color-mix(in srgb, var(--c) 30%, transparent); }
.idea.is-new { box-shadow: 0 0 0 2px var(--c), 0 0 50px color-mix(in srgb, var(--c) 55%, transparent); }
@keyframes pop-in { from { opacity: 0; transform: scale(.85) rotate(calc(var(--tilt, 0deg) * 4)); } }
.idea__top { display: flex; justify-content: space-between; align-items: center; gap: 8px; }
.idea__arena { font: 500 .72rem var(--font-mono); color: var(--c); letter-spacing: .06em; text-transform: uppercase; }
.idea__badge { font: 500 .66rem var(--font-mono); color: var(--ink-dim); border: 1px dashed var(--line); padding: 2px 8px; border-radius: 99px; }
.idea__badge--yours { color: var(--pink); border-color: var(--pink); }
.idea h3 { font-size: 1.95rem; }
.idea p { color: var(--ink-soft); font-size: .93rem; }
.idea__needs { display: flex; flex-wrap: wrap; gap: 6px; }
.idea__needs span { font: 500 .68rem var(--font-mono); padding: 3px 9px; border-radius: 99px; background: rgba(255, 255, 255, .06); color: var(--ink-soft); }
.idea__helped { font-family: var(--font-hand); font-size: 1.3rem; color: var(--pink); }
.idea__actions { display: flex; gap: 8px; margin-top: auto; padding-top: 8px; border-top: 1px dashed var(--line); }
.idea__btn {
  flex: 1; min-height: 44px; display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  font: 700 1.35rem/1 var(--font-hand); color: var(--ink); cursor: pointer;
  background: transparent; border: 1.5px solid var(--line); border-radius: var(--sketch-pill);
  transition: all .2s ease;
}
.idea__btn:hover { border-color: var(--c); color: var(--c); }
.idea__btn[aria-pressed="true"] { background: var(--c); border-color: var(--c); color: var(--accent-ink); box-shadow: 0 0 18px color-mix(in srgb, var(--c) 60%, transparent); }
.idea__count { font: 500 .8rem var(--font-mono); }
.wall__empty { grid-column: 1 / -1; text-align: center; padding: 40px; color: var(--ink-dim); font: 700 1.8rem var(--font-hand); }

/* ---------- Journey ---------- */
.journey__track { position: relative; }
.journey__path { position: absolute; top: 0; bottom: 0; left: 50%; width: 140px; height: 100%; transform: translateX(-50%); overflow: visible; }
#journey-progress { filter: drop-shadow(0 0 6px var(--lime)); stroke: var(--lime); }
.journey__ball {
  position: absolute; top: 0; left: 0; width: 34px; height: 34px; margin: -17px 0 0 -17px; border-radius: 50%;
  background: radial-gradient(circle at 35% 30%, #FFB199, var(--ball) 55%, #B33A14);
  box-shadow: 0 0 24px var(--ball), 0 0 60px rgba(255, 106, 61, .5);
  will-change: transform; z-index: 2;
}
.journey__ball::after {
  content: ""; position: absolute; inset: 6px; border-radius: 50%;
  border: 2px solid transparent; border-top-color: rgba(255, 255, 255, .7); border-bottom-color: rgba(255, 255, 255, .7);
  transform: rotate(var(--spin, 0deg));
}
.stops { list-style: none; margin: 0; padding: 0; display: grid; gap: clamp(40px, 6vw, 72px); }
.stop { display: grid; grid-template-columns: 1fr 140px 1fr; align-items: center; }
.stop__num {
  grid-column: 2; justify-self: center; z-index: 1;
  font: 500 .8rem var(--font-mono); color: var(--ink-dim);
  background: var(--bg); padding: 6px 10px; border: 1px solid var(--line); border-radius: 99px;
  transition: all .4s ease;
}
.stop__card {
  grid-column: 1; grid-row: 1; padding: 26px; background: var(--surface);
  border: 1.5px solid var(--line); border-radius: var(--sketch-a);
  opacity: .35; transform: translateX(-20px) rotate(-1deg);
  transition: opacity .6s ease, transform .6s cubic-bezier(.2, .8, .2, 1), border-color .4s ease, box-shadow .4s ease;
}
.stop:nth-child(even) .stop__card { grid-column: 3; border-radius: var(--sketch-b); transform: translateX(20px) rotate(1deg); }
.stop.is-lit .stop__card { opacity: 1; transform: none; border-color: color-mix(in srgb, var(--lime) 50%, var(--line)); box-shadow: 0 0 30px rgba(200, 255, 61, .12); }
.stop.is-lit .stop__num { color: var(--accent-ink); background: var(--lime); border-color: var(--lime); box-shadow: var(--glow-lime); }
.stop__card h3 { color: var(--lime); margin-bottom: 10px; }
.stop__card p { color: var(--ink-soft); }
.gets { list-style: none; padding: 0; margin: 16px 0 0; display: flex; flex-wrap: wrap; gap: 8px; }
.gets li { font: 500 .72rem var(--font-mono); color: var(--cyan); border: 1px solid rgba(61, 242, 255, .35); padding: 4px 10px; border-radius: 99px; }
.gets li::before { content: "+ "; }
@media (max-width: 820px) {
  .journey__path { left: 0; width: 56px; transform: none; }
  .stop { grid-template-columns: 56px 1fr; }
  .stop__num { grid-column: 1; }
  .stop__card, .stop:nth-child(even) .stop__card { grid-column: 2; transform: translateX(16px); }
}

/* ---------- FAQ ---------- */
.faq { display: grid; gap: 12px; }
.faq details { background: var(--surface); border: 1.5px solid var(--line); border-radius: var(--sketch-a); padding: 0 24px; transition: border-color .2s ease; }
.faq details:nth-child(even) { border-radius: var(--sketch-b); }
.faq details[open] { border-color: rgba(61, 242, 255, .5); }
.faq summary { list-style: none; cursor: pointer; padding: 20px 40px 20px 0; position: relative; font: 700 1.8rem/1.1 var(--font-hand); }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; position: absolute; right: 0; top: 50%; translate: 0 -50%; font: 500 1.6rem/1 var(--font-mono); color: var(--cyan); transition: rotate .25s ease; }
.faq details[open] summary::after { rotate: 45deg; }
.faq details p { padding-bottom: 22px; color: var(--ink-soft); }

/* ---------- Join ---------- */
.join { background: linear-gradient(180deg, transparent, rgba(200, 255, 61, .05)); }
.join__grid { display: grid; grid-template-columns: 1fr 1.1fr; gap: 56px; align-items: center; }
.join__copy p:not(.eyebrow) { margin-top: 18px; font-size: 1.15rem; color: var(--ink-soft); max-width: 40ch; }
.form {
  display: grid; gap: 18px; padding: clamp(24px, 4vw, 38px);
  background: var(--surface-solid); border: 1.5px solid var(--lime); border-radius: var(--sketch-b);
  box-shadow: 0 0 50px rgba(200, 255, 61, .14), 8px 8px 0 rgba(200, 255, 61, .35);
}
.field { display: grid; gap: 8px; border: 0; padding: 0; margin: 0; min-width: 0; }
.field label, .field legend { font: 500 .78rem var(--font-mono); color: var(--ink-soft); letter-spacing: .04em; padding: 0; margin-bottom: 0; }
.field legend { margin-bottom: 8px; }
.field input:not([type="radio"]):not([type="checkbox"]), .field select {
  width: 100%; min-height: 50px; padding: 0 16px; font: inherit; color: var(--ink);
  background: rgba(255, 255, 255, .03); border: 1.5px solid var(--line); border-radius: 14px;
  transition: border-color .2s ease, box-shadow .2s ease;
}
.field input:focus, .field select:focus { outline: none; border-color: var(--cyan); box-shadow: var(--glow-cyan); }
.field input[aria-invalid="true"] { border-color: var(--pink); }
.pick { display: flex; flex-wrap: wrap; gap: 8px; }
.pick label { position: relative; cursor: pointer; }
.pick input { position: absolute; opacity: 0; pointer-events: none; }
.pick span {
  display: inline-flex; align-items: center; min-height: 42px; padding: 0 14px; gap: 6px;
  font: 500 .85rem var(--font-body); color: var(--ink-soft);
  border: 1.5px solid var(--line); border-radius: var(--sketch-pill); transition: all .2s ease;
}
.pick label:hover span { border-color: var(--ink-soft); color: var(--ink); }
.pick input:checked + span { color: var(--accent-ink); background: var(--lime); border-color: var(--lime); box-shadow: var(--glow-lime); }
.pick input:focus-visible + span { outline: 2px dashed var(--cyan); outline-offset: 3px; }
.pick--arenas input:checked + span { background: var(--cyan); border-color: var(--cyan); box-shadow: var(--glow-cyan); }
.form__status { min-height: 1.4em; font: 500 .85rem var(--font-mono); }
.form__status.is-ok { color: var(--lime); }
.form__status.is-err { color: var(--pink); }
@media (max-width: 860px) { .join__grid { grid-template-columns: 1fr; gap: 36px; } }

/* ---------- Footer ---------- */
.footer { padding: 40px 0; border-top: 1px dashed var(--line); }
.footer__inner { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 16px; }
.footer__note { color: var(--ink-dim); font: 500 .78rem var(--font-mono); }

/* ---------- Toast & confetti ---------- */
.toast {
  position: fixed; left: 50%; bottom: 24px; z-index: 80; translate: -50% calc(100% + 48px);
  max-width: calc(100% - 32px); padding: 12px 20px;
  font: 700 1.5rem/1.1 var(--font-hand); color: var(--accent-ink);
  background: var(--lime); border-radius: var(--sketch-pill); box-shadow: var(--glow-lime);
  transition: translate .4s cubic-bezier(.3, 1.4, .5, 1); pointer-events: none;
}
.toast.is-on { translate: -50% 0; }
.confetti { position: fixed; inset: 0; width: 100%; height: 100%; pointer-events: none; z-index: 90; }

/* ---------- Throw form extras ---------- */
.throw__dice {
  flex-shrink: 0; width: 48px; min-height: 48px; font-size: 1.4rem; cursor: pointer;
  background: transparent; border: 1.5px dashed var(--line); border-radius: 50%;
  transition: transform .4s cubic-bezier(.3, 1.6, .5, 1), border-color .2s ease;
}
.throw__dice:hover { border-color: var(--pink); transform: rotate(-20deg) scale(1.1); }
.throw__dice.is-rolling { animation: roll .5s cubic-bezier(.3, 1.4, .5, 1); }
@keyframes roll { 50% { transform: rotate(200deg) scale(1.2); } to { transform: rotate(360deg); } }
@media (max-width: 560px) { .throw__input { flex: 1 1 calc(100% - 60px); } }

/* ---------- Shared bits ---------- */
.note { margin-top: 28px; font: 500 .74rem/1.5 var(--font-mono); color: var(--ink-dim); text-align: center; }
.section__head--row { display: flex; flex-wrap: wrap; align-items: flex-end; justify-content: space-between; gap: 24px; max-width: none; }
.section__head--row > div { max-width: 720px; }

/* ---------- Arena filter bar ---------- */
.arena-bar { display: flex; gap: 10px; overflow-x: auto; padding: 4px 4px 14px; margin: 0 -4px 22px; scrollbar-width: thin; scroll-snap-type: x proximity; }
.arena-tile {
  --c: var(--cyan);
  flex: 0 0 auto; scroll-snap-align: start;
  display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 4px;
  min-width: 92px; min-height: 86px; padding: 10px 14px; cursor: pointer;
  color: var(--ink-soft); background: var(--surface);
  border: 1.5px solid var(--line); border-radius: var(--sketch-a);
  transition: transform .25s cubic-bezier(.3, 1.6, .5, 1), border-color .2s ease, box-shadow .2s ease, color .2s ease;
}
.arena-tile:nth-child(even) { border-radius: var(--sketch-b); }
.arena-tile__emoji { font-size: 1.7rem; line-height: 1; transition: transform .3s cubic-bezier(.3, 1.6, .5, 1); }
.arena-tile__name { font: 700 1.35rem/1 var(--font-hand); }
.arena-tile:hover { color: var(--ink); border-color: color-mix(in srgb, var(--c) 60%, var(--line)); transform: translateY(-3px); }
.arena-tile:hover .arena-tile__emoji { transform: scale(1.15) rotate(-8deg); }
.arena-tile[aria-pressed="true"] {
  color: var(--c); border-color: var(--c);
  background: color-mix(in srgb, var(--c) 10%, transparent);
  box-shadow: 0 0 22px color-mix(in srgb, var(--c) 35%, transparent);
}

/* ---------- Implementation Zone ---------- */
.stage-tabs { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 28px; }
.projects { display: grid; grid-template-columns: repeat(auto-fill, minmax(340px, 1fr)); gap: 22px; }
.project {
  --c: var(--lime);
  position: relative; display: flex; flex-direction: column; gap: 16px;
  padding: 24px; background: var(--surface-solid);
  border: 1.5px solid color-mix(in srgb, var(--c) 40%, var(--line)); border-radius: var(--sketch-b);
  animation: pop-in .5s cubic-bezier(.3, 1.5, .5, 1) both;
  transition: transform .3s ease, box-shadow .3s ease;
}
.project:nth-child(even) { border-radius: var(--sketch-a); }
.project:hover { transform: translateY(-4px); box-shadow: 0 0 34px color-mix(in srgb, var(--c) 22%, transparent); }
.project.is-new { box-shadow: 0 0 0 2px var(--c), 0 0 50px color-mix(in srgb, var(--c) 45%, transparent); }
.project__top { display: flex; justify-content: space-between; align-items: center; gap: 8px; }
.project__status {
  display: inline-flex; align-items: center; gap: 8px;
  font: 500 .72rem var(--font-mono); letter-spacing: .06em; text-transform: uppercase; color: var(--c);
}
.project__status::before { content: ""; width: 8px; height: 8px; border-radius: 50%; background: var(--c); box-shadow: 0 0 10px var(--c); animation: pulse 1.8s ease-in-out infinite; }
@keyframes pulse { 50% { opacity: .35; } }
.project h3 { font-size: 2.2rem; }
.project__arena { font: 500 .72rem var(--font-mono); color: var(--ink-dim); }

/* stage track: Spark → Launch */
.track { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(5, 1fr); position: relative; }
.track::before { content: ""; position: absolute; top: 9px; left: 10%; right: 10%; height: 2px; background: var(--line); }
.track::after {
  content: ""; position: absolute; top: 9px; left: 10%; height: 2px;
  width: calc(var(--p, 0) * 80%); background: var(--c); box-shadow: 0 0 10px var(--c);
}
.track li { position: relative; z-index: 1; display: grid; justify-items: center; gap: 6px; font: 500 .62rem var(--font-mono); color: var(--ink-dim); text-transform: uppercase; letter-spacing: .04em; }
.track li::before { content: ""; width: 20px; height: 20px; border-radius: 50%; background: var(--bg); border: 2px solid var(--line); }
.track li.is-done { color: var(--ink-soft); }
.track li.is-done::before { background: var(--c); border-color: var(--c); }
.track li.is-now { color: var(--c); }
.track li.is-now::before { background: var(--bg); border-color: var(--c); box-shadow: 0 0 0 4px color-mix(in srgb, var(--c) 25%, transparent), 0 0 14px var(--c); }

.project__update { padding: 12px 14px; border-left: 2px solid var(--c); background: rgba(255, 255, 255, .03); border-radius: 0 12px 12px 0; }
.project__update small { display: block; font: 500 .66rem var(--font-mono); color: var(--ink-dim); margin-bottom: 4px; text-transform: uppercase; letter-spacing: .06em; }
.project__update p { font-family: var(--font-hand); font-size: 1.35rem; line-height: 1.2; color: var(--ink); }

.squad { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; }
.squad__dots { display: flex; }
.squad__dots span {
  width: 30px; height: 30px; margin-right: -8px; border-radius: 50%;
  display: grid; place-items: center; font: 700 .8rem var(--font-body);
  background: color-mix(in srgb, var(--c) 25%, var(--surface-solid)); color: var(--ink);
  border: 2px solid var(--surface-solid);
}
.squad__dots span.is-open { background: transparent; border: 1.5px dashed var(--ink-dim); color: var(--ink-dim); }
.squad__dots span.is-you { background: var(--pink); color: var(--accent-ink); }
.squad__label { font: 500 .75rem var(--font-mono); color: var(--ink-soft); }
.project__needs { display: flex; flex-wrap: wrap; gap: 6px; }
.project__needs span { font: 500 .68rem var(--font-mono); padding: 3px 9px; border-radius: 99px; border: 1px dashed color-mix(in srgb, var(--c) 50%, var(--line)); color: var(--ink-soft); }
.project__needs span::before { content: "+ "; color: var(--c); }
.project .idea__actions { margin-top: auto; }

/* ---------- Join: role card ---------- */
.role-card {
  --c: var(--lime);
  display: flex; gap: 18px; align-items: flex-start; margin-top: 30px; padding: 20px;
  border: 1.5px dashed color-mix(in srgb, var(--c) 60%, var(--line)); border-radius: var(--sketch-a);
  transition: border-color .3s ease;
}
.role-card__emoji { font-size: 2.6rem; line-height: 1; filter: drop-shadow(0 0 10px color-mix(in srgb, var(--c) 60%, transparent)); }
.role-card h3 { color: var(--c); font-size: 2rem; margin-bottom: 4px; }
.role-card p { color: var(--ink-soft); font-size: .98rem; }
.role-card.is-swapping > * { animation: swap .4s ease both; }
@keyframes swap { from { opacity: 0; transform: translateY(8px); } }

/* ---------- Dialog sheets ---------- */
.sheet {
  width: min(540px, calc(100% - 32px)); max-height: calc(100% - 32px); padding: 0; color: var(--ink);
  background: var(--surface-solid); border: 1.5px solid var(--cyan); border-radius: var(--sketch-a);
  box-shadow: 0 0 60px rgba(61, 242, 255, .25);
}
.sheet::backdrop { background: rgba(4, 4, 8, .7); backdrop-filter: blur(6px); }
.sheet[open] { animation: pop-in .35s cubic-bezier(.3, 1.5, .5, 1); }
.sheet__inner { padding: 28px; display: grid; gap: 16px; }
.sheet__idea { font: 700 1.5rem/1.1 var(--font-hand); color: var(--cyan); }
.sheet__actions { display: flex; gap: 10px; justify-content: flex-end; margin-top: 4px; }
.sheet .field select option { background: var(--surface-solid); }

/* ---------- Reveal ---------- */
.reveal { opacity: 0; transform: translateY(28px); transition: opacity .8s ease, transform .8s cubic-bezier(.2, .7, .2, 1); }
.reveal.is-in { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .001ms !important; animation-iteration-count: 1 !important; transition-duration: .001ms !important; }
  .reveal { opacity: 1; transform: none; }
  .hero__floor { animation: none; }
}