*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --bg: #030712;
  --space: #07111f;
  --deep: #01030a;
  --ink: #f8fafc;
  --muted: #a8b3c7;
  --panel: rgba(5, 11, 25, 0.78);
  --line: rgba(226, 232, 240, 0.22);
  --cyan: #67e8f9;
  --gold: #f8c66a;
  --rose: #fb7185;
  --green: #86efac;
  --violet: #c4b5fd;
}

html {
  scroll-behavior: smooth;
}

body {
  min-height: 100vh;
  font-family: Inter, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--ink);
  background: var(--deep);
}

.back-bar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 30;
  padding: 0.7rem 1.5rem;
  background: rgba(1, 3, 10, 0.62);
  border-bottom: 1px solid rgba(226, 232, 240, 0.12);
  backdrop-filter: blur(12px);
}

.back-link,
.restart-link {
  color: var(--muted);
  font-size: 0.82rem;
  font-weight: 700;
  text-decoration: none;
  transition: color 0.2s ease;
}

.back-link:hover,
.restart-link:hover {
  color: var(--ink);
}

.forecast-panel {
  position: fixed;
  right: 1.25rem;
  top: 4.2rem;
  z-index: 20;
  width: min(15rem, calc(100vw - 2rem));
  padding: 0.9rem;
  background: var(--panel);
  border: 1px solid rgba(226, 232, 240, 0.13);
  border-radius: 0.5rem;
  box-shadow: 0 22px 60px rgba(0, 0, 0, 0.35);
  backdrop-filter: blur(14px);
}

.forecast-panel__label {
  color: var(--muted);
  font-size: 0.68rem;
  font-weight: 850;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.forecast-panel__time {
  margin-top: 0.25rem;
  color: var(--gold);
  font-size: clamp(1.45rem, 6vw, 2.2rem);
  font-weight: 950;
  line-height: 1.05;
  font-variant-numeric: tabular-nums;
}

.forecast-panel__event {
  margin-top: 0.35rem;
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 700;
  line-height: 1.35;
}

.forecast-meter {
  height: 6px;
  margin-top: 0.8rem;
  overflow: hidden;
  background: rgba(248, 250, 252, 0.1);
  border-radius: 999px;
}

.forecast-meter span {
  display: block;
  width: 0;
  height: 100%;
  background: linear-gradient(90deg, var(--cyan), var(--gold), var(--rose));
  border-radius: inherit;
}

.forecast-hero {
  min-height: 100vh;
  display: grid;
  place-items: center;
  align-content: center;
  gap: 1rem;
  padding: 7rem 1.5rem 4rem;
  text-align: center;
  position: relative;
  overflow: hidden;
  background:
    radial-gradient(circle at 50% 46%, rgba(248, 198, 106, 0.16), transparent 18rem),
    radial-gradient(circle at 20% 24%, rgba(103, 232, 249, 0.14), transparent 20rem),
    linear-gradient(180deg, #0c1630 0%, #07111f 54%, #030712 100%);
}

.forecast-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 14% 18%, rgba(255, 255, 255, 0.88) 0 1px, transparent 2px),
    radial-gradient(circle at 72% 22%, rgba(255, 255, 255, 0.7) 0 1px, transparent 2px),
    radial-gradient(circle at 43% 72%, rgba(255, 255, 255, 0.62) 0 1px, transparent 2px),
    radial-gradient(circle at 84% 66%, rgba(255, 255, 255, 0.82) 0 1px, transparent 2px);
  background-size: 210px 180px, 260px 220px, 180px 250px, 300px 260px;
  opacity: 0.72;
  pointer-events: none;
}

.starfield {
  position: absolute;
  width: min(62vw, 38rem);
  aspect-ratio: 1;
  border-radius: 50%;
  background:
    radial-gradient(circle at 50% 50%, rgba(248, 198, 106, 0.92) 0 1.8rem, transparent 1.9rem),
    radial-gradient(circle at 50% 50%, rgba(248, 198, 106, 0.16) 0 11rem, transparent 11.2rem),
    radial-gradient(circle at 50% 50%, transparent 0 15rem, rgba(103, 232, 249, 0.35) 15.1rem 15.35rem, transparent 15.45rem);
  opacity: 0.9;
  transform: translateY(-2rem);
}

.starfield::before,
.starfield::after {
  content: "";
  position: absolute;
  border-radius: 50%;
  border: 2px solid rgba(196, 181, 253, 0.44);
  inset: 18%;
  transform: rotate(-18deg) scaleY(0.32);
}

.starfield::after {
  inset: 28%;
  border-color: rgba(103, 232, 249, 0.42);
  transform: rotate(22deg) scaleY(0.26);
}

.eyebrow,
.forecast-hero h1,
.forecast-hero p,
.scroll-cue {
  position: relative;
  z-index: 1;
}

.eyebrow {
  color: var(--cyan);
  font-size: 0.78rem;
  font-weight: 900;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.forecast-hero h1 {
  max-width: 880px;
  font-size: clamp(3rem, 11vw, 8rem);
  font-weight: 950;
  letter-spacing: 0;
  line-height: 0.92;
}

.forecast-hero p {
  max-width: 650px;
  color: #dbeafe;
  font-size: clamp(1rem, 2.4vw, 1.22rem);
  font-weight: 650;
  line-height: 1.55;
}

.scroll-cue {
  margin-top: 1rem;
  color: var(--muted);
  font-size: 0.8rem;
  font-weight: 900;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.forecast {
  position: relative;
  min-height: 13800px;
  padding: 4rem 1rem 7rem;
  background:
    radial-gradient(circle at 16% 12%, rgba(103, 232, 249, 0.08), transparent 20rem),
    radial-gradient(circle at 76% 33%, rgba(248, 198, 106, 0.08), transparent 25rem),
    radial-gradient(circle at 30% 62%, rgba(251, 113, 133, 0.06), transparent 21rem),
    linear-gradient(180deg, #07111f 0%, #060b18 38%, #02050d 72%, #000 100%);
}

.forecast::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(circle, rgba(248, 250, 252, 0.38) 0 1px, transparent 1.5px),
    radial-gradient(circle, rgba(248, 250, 252, 0.18) 0 1px, transparent 1.5px);
  background-position: 0 0, 70px 120px;
  background-size: 180px 220px, 260px 300px;
  pointer-events: none;
}

.time-line {
  position: sticky;
  top: 0;
  width: 2px;
  height: 100vh;
  margin: 0 auto;
  background: linear-gradient(180deg, transparent, var(--line), transparent);
  pointer-events: none;
}

.event-list {
  position: absolute;
  inset: 0;
  left: 50%;
  width: min(100%, 1080px);
  max-width: 1080px;
  margin: 0 auto;
  transform: translateX(-50%);
}

.cosmic-event {
  position: absolute;
  left: 1rem;
  right: 1rem;
  display: grid;
  grid-template-columns: 12rem minmax(0, 24rem);
  gap: 1.1rem;
  width: min(100% - 2rem, 40rem);
  align-items: center;
  opacity: 0;
  transform: translateY(2rem);
  transition: opacity 0.55s ease, transform 0.55s ease;
}

.cosmic-event.is-visible {
  opacity: 1;
  transform: translateY(0);
}

.cosmic-event:nth-of-type(even) {
  margin-left: auto;
  grid-template-columns: minmax(0, 24rem) 12rem;
}

.cosmic-event:nth-of-type(even) .event-art {
  order: 2;
}

.event-card {
  padding: 0.95rem 1rem;
  background: rgba(3, 7, 18, 0.64);
  border: 1px solid rgba(226, 232, 240, 0.14);
  border-radius: 0.5rem;
  box-shadow: 0 22px 58px rgba(0, 0, 0, 0.28);
  backdrop-filter: blur(11px);
  position: relative;
  z-index: 2;
}

.event-time {
  color: var(--gold);
  font-size: 0.78rem;
  font-weight: 900;
  font-variant-numeric: tabular-nums;
}

.event-card h2 {
  margin-top: 0.25rem;
  font-size: clamp(1.12rem, 3.6vw, 1.62rem);
  line-height: 1.12;
  letter-spacing: 0;
}

.event-card p {
  margin-top: 0.45rem;
  color: var(--muted);
  font-size: 0.88rem;
  line-height: 1.55;
}

.event-art {
  width: 100%;
  min-width: 0;
  aspect-ratio: 1;
  display: grid;
  place-items: center;
  filter: drop-shadow(0 18px 24px rgba(0, 0, 0, 0.32));
  position: relative;
  z-index: 1;
}

.event-art svg {
  width: 100%;
  height: 100%;
  max-width: 12rem;
  overflow: visible;
}

.era-marker {
  position: absolute;
  left: 1rem;
  right: 1rem;
  display: flex;
  align-items: center;
  gap: 0.8rem;
  color: rgba(248, 250, 252, 0.66);
  font-size: clamp(0.98rem, 3vw, 1.3rem);
  font-weight: 900;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.era-marker::before,
.era-marker::after {
  content: "";
  height: 1px;
  flex: 1;
  background: rgba(226, 232, 240, 0.15);
}

.finale {
  min-height: 100vh;
  display: grid;
  place-items: center;
  align-content: center;
  gap: 1rem;
  padding: 5rem 1.5rem;
  text-align: center;
  background:
    radial-gradient(circle at 50% 112%, rgba(103, 232, 249, 0.11), transparent 26rem),
    linear-gradient(180deg, #000, #01030a);
}

.finale__mark {
  color: var(--rose);
  font-size: 0.9rem;
  font-weight: 900;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.finale h2 {
  font-size: clamp(2.4rem, 9vw, 5.6rem);
  line-height: 0.95;
}

.finale p {
  max-width: 630px;
  color: var(--muted);
  font-size: clamp(1rem, 2.5vw, 1.2rem);
  line-height: 1.65;
}

@media (max-width: 760px) {
  .forecast-panel {
    inset: auto 0.75rem 0.75rem;
    width: auto;
  }

  .forecast {
    min-height: 15000px;
  }

  .cosmic-event,
  .cosmic-event:nth-of-type(even) {
    grid-template-columns: minmax(0, 8rem) minmax(0, 1fr);
    gap: 0.75rem;
    width: calc(100% - 1rem);
  }

  .cosmic-event:nth-of-type(even) .event-art {
    order: 0;
  }

  .event-card {
    padding: 0.75rem;
  }

  .event-card p {
    font-size: 0.8rem;
  }

  .event-art svg {
    max-width: 8rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  .cosmic-event,
  .back-link,
  .restart-link {
    transition: none;
  }
}