/* 42 Wonders, base tokens, typography, reset */

:root {
  /* Core palette, light cosmic navy inspired by the book spreads */
  --bg-0: #0c1742;
  --bg-1: #13215a;
  --bg-2: #1c2d73;
  --bg-3: #253a8a;
  --bg-glass: rgba(19, 33, 90, 0.72);

  /* Ink */
  --ink-0: #f4ecd8;
  --ink-1: #dce2f2;
  --ink-2: #9ba3c0;
  --ink-3: #6672a0;

  /* Accents, rating triad (match the book) */
  --c-beauty: #f36ab9;
  --c-power:  #ff9f43;
  --c-mystery:#5ce1a4;
  --c-wonder: #ffd36e;

  /* Brand accents */
  --c-gold: #d6a84c;
  --c-gold-bright: #ffd36e;
  --c-cool: #7bb7ff;
  --c-violet: #a98cff;

  /* Surfaces */
  --hairline: rgba(244, 236, 216, 0.12);
  --hairline-strong: rgba(244, 236, 216, 0.28);
  --hairline-gold: rgba(214, 168, 76, 0.45);

  /* Motion */
  --ease: cubic-bezier(0.22, 0.61, 0.36, 1);
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);

  /* Layout */
  --page-max: 1320px;
  --reader-max: 760px;
  --radius-s: 6px;
  --radius-m: 12px;
  --radius-l: 22px;

  /* Type */
  --font-display: 'Fraunces', 'Playfair Display', Georgia, serif;
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, 'SF Mono', Menlo, monospace;
}

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  background:
    radial-gradient(ellipse 100% 70% at 50% 0%, #2540a0 0%, transparent 55%),
    radial-gradient(ellipse 80% 60% at 85% 100%, #1a2e82 0%, transparent 55%),
    radial-gradient(ellipse 60% 50% at 15% 55%, #1f3388 0%, transparent 60%),
    linear-gradient(180deg, #0c1742 0%, #08123a 100%);
  background-attachment: fixed;
  color: var(--ink-1);
  font-family: var(--font-sans);
  font-size: 17px;
  line-height: 1.55;
  font-weight: 400;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
  position: relative;
}

img,
video { max-width: 100%; display: block; }

a {
  color: var(--c-gold-bright);
  text-decoration: none;
  transition: color 160ms var(--ease);
}
a:hover { color: var(--ink-0); }

button {
  font: inherit; color: inherit; background: transparent; border: 0; cursor: pointer;
}

h1, h2, h3, h4 {
  font-family: var(--font-display);
  color: var(--ink-0);
  font-weight: 500;
  line-height: 1.05;
  letter-spacing: -0.01em;
  margin: 0;
}

h1 { font-size: clamp(2.5rem, 6vw, 5.2rem); font-weight: 300; }
h2 { font-size: clamp(1.8rem, 3.4vw, 3rem); font-weight: 400; }
h3 { font-size: clamp(1.2rem, 1.8vw, 1.6rem); font-weight: 500; }

p { margin: 0 0 1em; }

/* Utility */

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.6em;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--c-gold-bright);
}

.eyebrow::before {
  content: '';
  width: 22px;
  height: 1px;
  background: var(--c-gold);
  display: inline-block;
  opacity: 0.7;
}

.container {
  width: 100%;
  max-width: var(--page-max);
  margin: 0 auto;
  padding: 0 clamp(20px, 4vw, 56px);
  position: relative;
  z-index: 1;
}

.reader { max-width: var(--reader-max); margin: 0 auto; }
.hairline { height: 1px; background: var(--hairline); }

.sr-only {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0;
}

/* Starfield background, 3 layers for parallax */

.starfield-bg {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  overflow: hidden;
  mix-blend-mode: screen;
}

.starfield-bg__layer {
  position: absolute;
  inset: -10%;
  background-repeat: repeat;
  background-size: 900px 900px;
  will-change: transform, opacity;
}

/* Layer A, fine bright stars */
.starfield-bg__layer--a {
  background-image:
    radial-gradient(1.8px 1.8px at 12% 22%, rgba(255,255,255,1), transparent 58%),
    radial-gradient(1.6px 1.6px at 37% 65%, rgba(255,255,255,.95), transparent 60%),
    radial-gradient(2px   2px   at 72% 18%, rgba(255,255,255,1), transparent 55%),
    radial-gradient(1.5px 1.5px at 88% 82%, rgba(255,255,255,.9), transparent 60%),
    radial-gradient(1.4px 1.4px at 51% 44%, rgba(255,255,255,.95), transparent 60%),
    radial-gradient(1.6px 1.6px at 22% 88%, rgba(255,255,255,.95), transparent 60%),
    radial-gradient(1.3px 1.3px at 60% 12%, rgba(210,230,255,.9), transparent 60%),
    radial-gradient(1.8px 1.8px at 93% 47%, rgba(255,255,255,1), transparent 55%),
    radial-gradient(1.4px 1.4px at 6%  8%,  rgba(255,255,255,.95), transparent 60%),
    radial-gradient(1.5px 1.5px at 45% 8%,  rgba(255,240,220,.9), transparent 60%),
    radial-gradient(1.3px 1.3px at 80% 60%, rgba(255,255,255,.9), transparent 60%),
    radial-gradient(1.6px 1.6px at 27% 34%, rgba(255,255,255,.95), transparent 60%);
  animation: star-twinkle 6s ease-in-out infinite alternate;
  opacity: 1;
}

/* Layer B, mid-scatter softer stars */
.starfield-bg__layer--b {
  background-image:
    radial-gradient(1.2px 1.2px at 18% 38%, rgba(210,225,255,.8), transparent 60%),
    radial-gradient(1.4px 1.4px at 62% 72%, rgba(255,235,195,.85), transparent 60%),
    radial-gradient(1.1px 1.1px at 30% 10%, rgba(255,255,255,.75), transparent 60%),
    radial-gradient(1.1px 1.1px at 80% 30%, rgba(210,225,255,.75), transparent 60%),
    radial-gradient(1.3px 1.3px at 45% 85%, rgba(255,215,175,.8), transparent 60%),
    radial-gradient(1.2px 1.2px at 8%  70%, rgba(255,255,255,.8), transparent 60%),
    radial-gradient(1.2px 1.2px at 97% 65%, rgba(210,230,255,.85), transparent 60%),
    radial-gradient(1.2px 1.2px at 55% 50%, rgba(255,245,220,.75), transparent 60%),
    radial-gradient(1.1px 1.1px at 15% 55%, rgba(255,255,255,.7), transparent 60%);
  background-size: 1200px 1200px;
  animation: star-twinkle 8s ease-in-out -2s infinite alternate, star-drift 240s linear infinite;
  opacity: .95;
}

/* Layer C, wide-spread tiny distant stars */
.starfield-bg__layer--c {
  background-image:
    radial-gradient(.9px .9px at 14% 55%, rgba(255,255,255,.85), transparent 60%),
    radial-gradient(.9px .9px at 55% 20%, rgba(255,255,255,.9), transparent 60%),
    radial-gradient(.8px .8px at 74% 48%, rgba(255,255,255,.75), transparent 60%),
    radial-gradient(.8px .8px at 33% 77%, rgba(255,255,255,.7), transparent 60%),
    radial-gradient(.9px .9px at 90% 90%, rgba(255,255,255,.8), transparent 60%),
    radial-gradient(.9px .9px at 4%  90%, rgba(255,255,255,.8), transparent 60%),
    radial-gradient(.7px .7px at 48% 50%, rgba(255,255,255,.65), transparent 60%),
    radial-gradient(.9px .9px at 25% 25%, rgba(255,255,255,.85), transparent 60%),
    radial-gradient(.8px .8px at 68% 82%, rgba(255,255,255,.75), transparent 60%);
  background-size: 520px 520px;
  animation: star-twinkle 4s ease-in-out -3s infinite alternate;
  opacity: .85;
}

@keyframes star-twinkle {
  0%   { opacity: .65; }
  50%  { opacity: 1; }
  100% { opacity: .8; }
}

@keyframes star-drift {
  0%   { transform: translate3d(0, 0, 0); }
  100% { transform: translate3d(-80px, 40px, 0); }
}

@media (prefers-reduced-motion: reduce) {
  .starfield-bg__layer { animation: none !important; }
}

/* Subtle cosmic nebula glow overlay */

body::before {
  content: '';
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  background:
    radial-gradient(ellipse 60% 40% at 80% -10%, rgba(169, 140, 255, 0.18), transparent 60%),
    radial-gradient(ellipse 50% 35% at 10% 100%, rgba(123, 183, 255, 0.14), transparent 60%),
    radial-gradient(ellipse 40% 30% at 100% 60%, rgba(214, 168, 76, 0.09), transparent 60%);
}

/* Stardust cursor trail */

.stardust-container {
  position: fixed;
  inset: 0;
  z-index: 9999;
  pointer-events: none;
  overflow: hidden;
}

.stardust {
  position: absolute;
  border-radius: 50%;
  background: radial-gradient(circle,
    rgba(255, 230, 160, .95) 0%,
    rgba(255, 211, 110, .7) 30%,
    rgba(214, 168, 76, .25) 55%,
    transparent 75%);
  transform: translate(-50%, -50%);
  filter: blur(0.3px) drop-shadow(0 0 5px rgba(255, 211, 110, .55));
  animation-name: stardust-fade;
  animation-timing-function: cubic-bezier(.32,.3,.26,1);
  animation-fill-mode: forwards;
  will-change: transform, opacity;
}

@keyframes stardust-fade {
  0%   {
    opacity: 1;
    transform: translate(-50%, -50%) scale(1) rotate(0deg);
  }
  100% {
    opacity: 0;
    transform:
      translate(calc(-50% + var(--drift, 0px)), calc(-50% + var(--fall, 20px)))
      scale(.2)
      rotate(var(--rot, 45deg));
  }
}

@media (hover: none), (prefers-reduced-motion: reduce) {
  .stardust-container { display: none; }
}

/* Top nav */

.topnav {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(16px) saturate(1.2);
  -webkit-backdrop-filter: blur(16px) saturate(1.2);
  background: linear-gradient(180deg, rgba(6, 10, 28, 0.88) 0%, rgba(6, 10, 28, 0.72) 100%);
  border-bottom: 1px solid var(--hairline);
}

.topnav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 16px 0;
}

.topnav__logo {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: 1.1rem;
  color: var(--ink-0);
  letter-spacing: 0.02em;
  display: inline-flex;
  align-items: center;
  gap: 12px;
}

.topnav__logo .mark {
  display: inline-grid;
  place-items: center;
  width: 30px;
  height: 30px;
  border: 1px solid var(--c-gold);
  border-radius: 50%;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0;
  color: var(--c-gold);
}

.topnav__links {
  display: flex;
  gap: clamp(16px, 3vw, 32px);
  font-size: 0.82rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-2);
}

.topnav__links a {
  color: var(--ink-2);
  transition: color 160ms var(--ease);
}
.topnav__links a:hover { color: var(--ink-0); }

/* Footer shared */

.sitefoot {
  margin-top: 120px;
  padding: 64px 0 48px;
  border-top: 1px solid var(--hairline);
  color: var(--ink-3);
  font-size: 0.82rem;
}

.sitefoot__grid {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 24px;
}

.sitefoot__grid strong { color: var(--ink-1); font-weight: 500; }

.starfield {
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    radial-gradient(1px 1px at 12% 20%, rgba(255, 255, 255, 0.85), transparent 60%),
    radial-gradient(1px 1px at 37% 65%, rgba(255, 255, 255, 0.6), transparent 60%),
    radial-gradient(1.2px 1.2px at 72% 18%, rgba(255, 255, 255, 0.9), transparent 60%),
    radial-gradient(1px 1px at 88% 82%, rgba(255, 255, 255, 0.55), transparent 60%),
    radial-gradient(0.8px 0.8px at 51% 44%, rgba(255, 255, 255, 0.7), transparent 60%),
    radial-gradient(1.1px 1.1px at 22% 88%, rgba(255, 255, 255, 0.75), transparent 60%);
  mix-blend-mode: screen;
  opacity: 0.55;
}

/* Reveal on scroll */

.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 900ms var(--ease-out), transform 900ms var(--ease-out);
}
.reveal.is-in { opacity: 1; transform: translateY(0); }

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto;
  }
  .reveal { opacity: 1; transform: none; }
}