/* Header: floating pill nav + hero */

.page {
  overflow-x: clip;
}

/* ---------- Topbar (floating pill) ---------- */
.topbar {
  position: sticky;
  top: 0;
  z-index: 50;
  padding-top: var(--space-4);
}

.nav {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  padding: 6px 6px 6px 8px;
  background: var(--white);
  border: var(--border);
  border-radius: var(--radius-pill);
  box-shadow: 0 4px 0 var(--ink);
  transition: background 0.3s var(--ease), box-shadow 0.3s var(--ease);
}

.topbar.is-scrolled .nav {
  background: rgba(255, 255, 255, 0.78);
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);
}

.nav__brand {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-family: var(--font-display);
  font-size: var(--fs-md);
  letter-spacing: 0.02em;
  white-space: nowrap;
}

.nav__brand img {
  width: 40px;
  height: 40px;
  transition: transform 0.6s var(--ease);
}

.nav__brand:hover img {
  transform: rotate(-20deg);
}

.nav__links {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  margin: 0;
  padding: 0;
  list-style: none;
  font-size: var(--fs-sm);
  font-weight: 500;
}

.nav__links a {
  display: block;
  padding: 0.5rem 1rem;
  border-radius: var(--radius-pill);
  transition: background 0.2s var(--ease), color 0.2s var(--ease);
}

.nav__links a:hover {
  background: var(--green-100);
}

.nav__links a[aria-current="true"] {
  background: var(--green-400);
  font-weight: 700;
}

.nav__panel {
  display: contents;
}

.nav__cta {
  padding: 0.6rem 1.15rem;
}

.nav__toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  padding: 0 12px;
  background: var(--paper);
  border: 2px solid var(--ink);
  border-radius: 50%;
  cursor: pointer;
}

.nav__toggle span {
  display: block;
  height: 2px;
  background: var(--ink);
  border-radius: 2px;
  transition: transform 0.25s var(--ease);
}

.nav.is-open .nav__toggle span:first-child {
  transform: translateY(3.5px) rotate(45deg);
}

.nav.is-open .nav__toggle span:last-child {
  transform: translateY(-3.5px) rotate(-45deg);
}

/* ---------- Hero stage ---------- */
.hero__stage {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding-block: var(--space-7) var(--space-8);
  text-align: center;
}

.hero__grid {
  position: absolute;
  top: 0;
  left: 50%;
  width: min(760px, 100%);
  height: 100%;
  transform: translateX(-50%);
  z-index: 0;
  pointer-events: none;
  overflow: visible;
  -webkit-mask-image: radial-gradient(ellipse at center, #000 55%, transparent 80%);
  mask-image: radial-gradient(ellipse at center, #000 55%, transparent 80%);
}

.hero__grid path {
  fill: none;
  stroke: var(--color-line);
  stroke-width: 1.2;
}

.hero__title {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  margin: 0;
  font-family: var(--font-display);
  font-size: var(--fs-hero);
  font-weight: 400;
  line-height: 0.98;
  letter-spacing: -0.02em;
}

.hero__line {
  display: block;
}

.hero__ball {
  display: inline-block;
  width: 0.66em;
  height: 0.66em;
  margin-inline: 0.02em;
  vertical-align: -0.02em;
  color: var(--ink);
}

.hero__ball--spin {
  animation: spin 6s linear infinite;
}

.hero__pill {
  margin-top: 0.14em;
  font-size: 0.82em;
  line-height: 1.05;
  transform: rotate(-2deg);
}

.hero__lead {
  position: relative;
  z-index: 1;
  max-width: 34ch;
  margin: var(--space-6) 0 0;
  font-size: var(--fs-md);
  color: var(--ink);
}

/* Doodles */
.doodle {
  position: absolute;
  z-index: 1;
  color: var(--ink);
}

.doodle--ball {
  left: 6%;
  bottom: 22%;
  width: 84px;
  animation: bounce 2.4s var(--ease) infinite;
}

.doodle--whistle {
  right: 6%;
  top: 10%;
  width: 100px;
  transform-origin: 30% 70%;
  animation: wobble 4s ease-in-out infinite;
}

/* ---------- Stats row ---------- */
.stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-5);
  padding-block: 0 var(--space-8);
}

.stats .stat__label {
  white-space: nowrap;
}

/* ---------- Motion ---------- */
@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

@keyframes bounce {
  0%,
  100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-14px);
  }
}

@keyframes wobble {
  0%,
  100% {
    transform: rotate(-6deg);
  }
  50% {
    transform: rotate(6deg);
  }
}

@media (prefers-reduced-motion: reduce) {
  .hero__ball--spin,
  .doodle {
    animation: none;
  }
}

/* ---------- Responsive ---------- */
@media (max-width: 900px) {
  .nav__toggle {
    display: flex;
  }

  .nav__panel {
    position: absolute;
    top: calc(100% + 10px);
    left: 0;
    right: 0;
    display: flex;
    flex-direction: column;
    padding: var(--space-3) var(--space-4) var(--space-4);
    background: var(--white);
    border: var(--border);
    border-radius: 24px;
    box-shadow: 0 4px 0 var(--ink);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-8px);
    transition: opacity 0.2s var(--ease), transform 0.2s var(--ease), visibility 0.2s;
  }

  .nav.is-open .nav__panel {
    opacity: 1;
    visibility: visible;
    transform: none;
  }

  .nav__links {
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    font-size: var(--fs-md);
    text-align: center;
  }

  .nav__links li + li {
    border-top: 1px solid var(--color-line);
  }

  .nav__links a {
    margin-block: var(--space-1);
    padding: 0.75rem 1rem;
  }

  .nav__cta {
    justify-content: center;
    margin-top: var(--space-3);
    padding: 0.85rem 1rem;
    font-size: var(--fs-md);
  }

  .hero__stage {
    padding-top: 6rem;
  }

  .doodle--ball {
    left: 0;
    bottom: auto;
    top: var(--space-5);
    width: 52px;
  }

  .doodle--whistle {
    right: 0;
    top: var(--space-5);
    width: 64px;
  }

  .stats {
    grid-template-columns: repeat(2, 1fr);
    row-gap: var(--space-6);
  }
}