* {
  box-sizing: border-box;
}

:root {
  color-scheme: dark;
  --space: #07071f;
  --deep-space: #01010b;
  --star: #fff7b8;
  --cyan: #74f7ff;
  --yellow: #ffe66f;
  --pink: #ff69c8;
  --green: #95ff8f;
  --orange: #ff9d4d;
  --panel: rgba(7, 7, 31, 0.82);
  --line: rgba(116, 247, 255, 0.45);
  --text: #f8f4ff;
  --muted: #c7c3ff;
}

html {
  min-height: 100%;
}

body {
  min-height: 100%;
  margin: 0;
  background:
    radial-gradient(circle at 18% 22%, rgba(255, 105, 200, 0.24), transparent 18rem),
    radial-gradient(circle at 82% 12%, rgba(116, 247, 255, 0.18), transparent 20rem),
    radial-gradient(circle at 50% 80%, rgba(255, 230, 111, 0.16), transparent 24rem),
    linear-gradient(180deg, var(--space), var(--deep-space));
  color: var(--text);
  font-family: "Trebuchet MS", Verdana, Arial, sans-serif;
  line-height: 1.6;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image:
    radial-gradient(var(--star) 1px, transparent 1px),
    radial-gradient(rgba(255, 255, 255, 0.7) 1px, transparent 1px);
  background-position: 0 0, 23px 37px;
  background-size: 86px 86px, 131px 131px;
  opacity: 0.55;
}

a {
  color: var(--cyan);
  text-underline-offset: 0.18em;
}

a:hover {
  color: var(--yellow);
}

.page {
  position: relative;
  width: min(1100px, calc(100% - 28px));
  margin: 0 auto;
  padding: 24px 0 56px;
}

.top-nav,
.mini-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: center;
  margin-bottom: 22px;
  font-size: 0.94rem;
}

.top-nav a,
.mini-nav a,
.button-link {
  display: inline-block;
  padding: 8px 12px;
  border: 2px solid var(--line);
  background: rgba(0, 0, 0, 0.36);
  color: var(--cyan);
  text-decoration: none;
  box-shadow: 4px 4px 0 rgba(0, 0, 0, 0.52);
}

.top-nav a:hover,
.mini-nav a:hover,
.button-link:hover {
  border-color: var(--yellow);
  color: var(--yellow);
  transform: translate(-1px, -1px);
}

.hero {
  padding: clamp(22px, 4vw, 44px);
  border: 3px double var(--cyan);
  background: var(--panel);
  box-shadow: 0 0 0 4px rgba(255, 105, 200, 0.14), 0 22px 60px rgba(0, 0, 0, 0.42);
  text-align: center;
}

.eyebrow {
  margin: 0 0 10px;
  color: var(--yellow);
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
}

h1 {
  margin: 0;
  color: #ffffff;
  font-family: Impact, Haettenschweiler, "Arial Narrow Bold", sans-serif;
  font-size: clamp(2.6rem, 9vw, 7rem);
  font-weight: 400;
  line-height: 0.92;
  letter-spacing: 0;
  text-shadow:
    3px 3px 0 #162089,
    6px 6px 0 #8d1f7a,
    0 0 22px rgba(116, 247, 255, 0.58);
}

.hero p:last-child {
  max-width: 760px;
  margin: 22px auto 0;
  color: var(--muted);
  font-size: 1.05rem;
}

.world-select {
  display: grid;
  grid-template-columns: repeat(5, minmax(120px, 1fr));
  gap: clamp(12px, 2vw, 22px);
  align-items: start;
  margin: 32px 0;
}

.planet-link {
  display: grid;
  gap: 12px;
  justify-items: center;
  min-height: 230px;
  padding: 16px 10px;
  color: var(--text);
  text-align: center;
  text-decoration: none;
}

.planet-link:hover .planet {
  transform: translateY(-8px) scale(1.06) rotate(5deg);
  filter: saturate(1.2) drop-shadow(0 0 24px currentColor);
}

.planet-link strong {
  display: block;
  color: var(--yellow);
  font-size: 1.08rem;
  text-transform: uppercase;
}

.planet-link span {
  color: var(--muted);
  font-size: 0.9rem;
}

.planet {
  position: relative;
  width: min(132px, 23vw);
  aspect-ratio: 1;
  border-radius: 50%;
  transition: transform 0.18s ease, filter 0.18s ease;
  box-shadow:
    inset -18px -18px 26px rgba(0, 0, 0, 0.34),
    inset 12px 12px 20px rgba(255, 255, 255, 0.18),
    0 0 24px rgba(116, 247, 255, 0.32);
  background-blend-mode: soft-light, screen;
}

.planet::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: 50%;
  background-image:
    radial-gradient(circle at 25% 25%, rgba(255, 255, 255, 0.12), transparent 28%),
    radial-gradient(circle at 70% 65%, rgba(255, 255, 255, 0.08), transparent 30%),
    radial-gradient(circle at 50% 45%, rgba(0, 0, 0, 0.06), transparent 38%);
  pointer-events: none;
  mix-blend-mode: screen;
  opacity: 0.95;
}

.planet::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 18%;
  width: 56%;
  height: 32%;
  transform: translateX(-50%);
  border-radius: 50%;
  background: radial-gradient(circle at 50% 30%, rgba(255, 255, 255, 0.75), transparent 58%);
  pointer-events: none;
  mix-blend-mode: screen;
}

.past {
  background-image: url("images/past.svg"), radial-gradient(circle at 32% 28%, #fff2b3, #ff9d4d 36%, #9d321f 70%);
  background-position: center;
  background-repeat: no-repeat;
  background-size: contain;
}
.basics {
  background-image: url("images/basics.svg"), radial-gradient(circle at 32% 28%, #e4fff8, #74f7ff 34%, #174d88 74%);
  background-position: center;
  background-repeat: no-repeat;
  background-size: contain;
}
.projects {
  background-image: url("images/projects.svg"), radial-gradient(circle at 32% 28%, #d7ffd4, #95ff8f 36%, #256b33 72%);
  background-position: center;
  background-repeat: no-repeat;
  background-size: contain;
}
.data {
  background-image: url("images/data.svg"), radial-gradient(circle at 32% 28%, #f4e8ff, #b777ff 36%, #402080 72%);
  background-position: center;
  background-repeat: no-repeat;
  background-size: contain;
}
.future {
  background-image: url("images/future.svg"), radial-gradient(circle at 32% 28%, #ffe0f6, #ff69c8 36%, #8d1f7a 72%);
  background-position: center;
  background-repeat: no-repeat;
  background-size: contain;
}

.panel-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 310px;
  gap: 24px;
  align-items: start;
  margin-top: 28px;
}

.panel,
.sidebar {
  border: 2px solid var(--line);
  background: var(--panel);
  box-shadow: 8px 8px 0 rgba(0, 0, 0, 0.45);
}

.panel {
  padding: clamp(22px, 4vw, 40px);
}

.sidebar {
  padding: 20px;
}

h2 {
  margin: 0 0 14px;
  color: var(--yellow);
  font-family: Georgia, "Times New Roman", serif;
  font-size: 1.8rem;
}

h3 {
  margin: 24px 0 8px;
  color: var(--green);
}

p {
  margin: 1rem 0;
}

ul,
ol {
  padding-left: 1.35rem;
}

li {
  margin: 0.6rem 0;
}

.route-list {
  list-style: none;
  padding: 0;
}

.route-list a {
  display: block;
  padding: 10px 0;
  border-bottom: 1px dashed rgba(116, 247, 255, 0.4);
  text-decoration: none;
}

.mission {
  margin: 20px 0;
  padding: 16px;
  border-left: 5px solid var(--pink);
  background: rgba(255, 105, 200, 0.12);
}

.planet-badge {
  display: grid;
  place-items: center;
  width: min(210px, 64vw);
  margin: 0 auto 24px;
}

.planet-badge img {
  width: 100%;
  height: auto;
  image-rendering: auto;
  filter: drop-shadow(0 0 22px rgba(116, 247, 255, 0.55));
}

footer {
  margin-top: 28px;
  color: var(--muted);
  font-size: 0.92rem;
  text-align: center;
}

@media (max-width: 860px) {
  .world-select {
    grid-template-columns: repeat(2, minmax(130px, 1fr));
  }

  .panel-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 520px) {
  .world-select {
    grid-template-columns: 1fr;
  }

  .planet-link {
    min-height: auto;
  }

  .top-nav,
  .mini-nav {
    flex-direction: column;
    align-items: stretch;
  }

  .top-nav a,
  .mini-nav a,
  .button-link {
    text-align: center;
  }
}