/* Refined theme: layout, motion, particles */
:root {
  --paper: #f2f0e9;
  --ink: #0b0c0d;
  --ink-soft: rgba(11, 12, 13, 0.78);
  --mist: rgba(242, 240, 233, 0.06);
  --mist-strong: rgba(242, 240, 233, 0.12);
  --line: rgba(242, 240, 233, 0.15);
  --accent: #e6e0d4;
  --accent-dark: #cfc6b6;
  --glow: rgba(230, 224, 212, 0.15);
  --shadow: rgba(0, 0, 0, 0.4);
  --max-width: 1100px;
  --gutter: clamp(20px, 5vw, 48px);
  --radius: 20px;
  --radius-lg: 28px;
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-in-out: cubic-bezier(0.65, 0, 0.35, 1);
  --duration: 0.6s;
  --duration-slow: 1s;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

html,
body {
  margin: 0;
  padding: 0;
  width: 100%;
  min-height: 100%;
  background: #08090a;
  background-image: radial-gradient(ellipse 100% 70% at 50% 0%, rgba(28, 30, 36, 0.85) 0%, transparent 55%),
    radial-gradient(ellipse 80% 50% at 50% 100%, rgba(18, 20, 24, 0.6) 0%, transparent 50%);
  color: var(--paper);
  font-family: "Cormorant Garamond", "Georgia", "Noto Serif SC", serif;
  letter-spacing: 0.02em;
}

body {
  line-height: 1.75;
}

.ambient-canvas {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 0;
  opacity: 0.9;
}

.shield-canvas {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 0;
  opacity: 1;
}

.hero-particles {
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  overflow: hidden;
}

.hero-particles .shield-canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  opacity: 1;
}

.typewriter {
  position: relative;
}

.typewriter::after {
  content: "";
  display: inline-block;
  width: 0.6ch;
  height: 0.9em;
  margin-left: 4px;
  border-right: 2px solid var(--paper);
  animation: type-blink 0.9s step-end infinite;
}

.typewriter.is-done::after {
  border-right-color: transparent;
  animation: none;
}

@keyframes type-blink {
  0%,
  50% {
    opacity: 1;
  }
  51%,
  100% {
    opacity: 0;
  }
}

a {
  color: inherit;
  text-decoration: none;
}

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

.page {
  min-height: 100vh;
  background: transparent;
  position: relative;
  z-index: 1;
}

.container {
  width: min(var(--max-width), 100% - var(--gutter) * 2);
  margin: 0 auto;
}

.top-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 200;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 16px var(--gutter) 14px;
  background: rgba(8, 9, 10, 0.78);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.12);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.4);
}

.top-nav .brand {
  font-family: "Cormorant Garamond", "Times New Roman", serif;
  font-size: 22px;
  letter-spacing: 2px;
}

.top-nav .nav-links {
  display: flex;
  gap: 24px;
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 2px;
  opacity: 0.95;
  justify-content: center;
}

.top-nav .nav-toggle {
  display: none;
  width: 38px;
  height: 34px;
  border-radius: 8px;
  border: 1px solid rgba(255, 255, 255, 0.2);
  background: rgba(255, 255, 255, 0.04);
  padding: 0;
  align-items: center;
  justify-content: center;
  cursor: pointer;
}

.top-nav .nav-toggle span,
.top-nav .nav-toggle span::before,
.top-nav .nav-toggle span::after {
  display: block;
  width: 18px;
  height: 2px;
  background: var(--paper);
  border-radius: 2px;
  transition: transform 0.25s ease, opacity 0.25s ease;
  content: "";
}

.top-nav .nav-toggle span::before {
  transform: translateY(-6px);
}

.top-nav .nav-toggle span::after {
  transform: translateY(6px);
}

.top-nav .nav-links a {
  position: relative;
  padding-bottom: 4px;
}

.top-nav .nav-links a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 0;
  height: 1px;
  background: var(--accent);
  transition: width 0.3s ease;
}

.top-nav .nav-links a:hover::after,
.top-nav .nav-links a.is-active::after {
  width: 100%;
}

.hero {
  min-height: 88vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 140px var(--gutter) 100px;
  position: relative;
  overflow: hidden;
  background: radial-gradient(ellipse 120% 80% at 50% 45%, transparent 0%, rgba(8, 9, 10, 0.25) 40%, #08090a 85%);
}

.hero .container {
  position: relative;
  z-index: 1;
}

.hero h1 {
  font-family: "Cormorant Garamond", "Times New Roman", serif;
  font-size: clamp(42px, 7.5vw, 96px);
  font-weight: 600;
  margin: 0 0 24px 0;
  letter-spacing: -0.02em;
  line-height: 1.1;
  text-shadow: 0 0 60px var(--glow);
}

.hero p {
  font-size: clamp(17px, 2vw, 20px);
  max-width: 640px;
  margin: 0 auto;
  opacity: 0.88;
  letter-spacing: 0.01em;
}

.hero .hero-cta {
  margin-top: 40px;
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-size: 13px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  padding: 16px 36px;
  border-radius: 999px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.05);
  transition: background var(--duration) var(--ease-out), border-color var(--duration) var(--ease-out), transform var(--duration) var(--ease-out), box-shadow var(--duration) var(--ease-out);
}

.hero .hero-cta:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: var(--accent);
  transform: translateY(-2px);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.3);
}

.word-graph {
  margin: 28px auto 18px;
  width: min(900px, 92vw);
  height: 260px;
  position: relative;
  overflow: hidden;
}

.word-graph-inline {
  border-radius: 0;
  border: none;
  background: transparent;
  box-shadow: none;
}

.word-graph canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

.section {
  padding: 100px 0;
}

.section--after-hero {
  padding-top: 48px;
}

.section-title {
  font-family: "Cormorant Garamond", "Times New Roman", serif;
  font-size: clamp(32px, 5vw, 64px);
  text-align: center;
  margin: 0 0 52px 0;
  letter-spacing: 0.6px;
}

.content-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 24px;
}

.card {
  position: relative;
  overflow: hidden;
  background: var(--mist);
  border: 1px solid rgba(255, 255, 255, 0.08);
  padding: 44px 42px;
  border-radius: var(--radius);
  box-shadow: 0 30px 60px var(--shadow);
  transition: transform 0.4s ease, background 0.4s ease, border 0.4s ease;
  transform-style: preserve-3d;
}

.card::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(
    circle at var(--mouse-x, 50%) var(--mouse-y, 50%),
    rgba(255, 255, 255, 0.08) 0%,
    transparent 50%
  );
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.25s ease;
}

.card:hover::before {
  opacity: 1;
}

.card:hover {
  transform: translateY(-6px) rotateX(0.8deg) rotateY(-0.8deg);
  background: var(--mist-strong);
  border-color: rgba(255, 255, 255, 0.14);
}

.card h3 {
  margin: 0 0 16px 0;
  font-size: 24px;
  color: var(--accent);
  letter-spacing: 0.4px;
}

.card p {
  margin: 0 0 18px 0;
  opacity: 0.78;
}

.card ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

.card li {
  margin-bottom: 12px;
  padding-left: 18px;
  position: relative;
  opacity: 0.85;
}

.card li::before {
  content: "•";
  position: absolute;
  left: 0;
  color: var(--accent);
}

.quote {
  text-align: center;
  max-width: 820px;
  margin: 0 auto;
  font-size: 20px;
  letter-spacing: 0.4px;
  opacity: 0.75;
}

.split {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 28px;
  align-items: center;
}

.split--follow {
  margin-top: 28px;
}

.split--equal {
  align-items: stretch;
}

.split--equal .panel {
  display: flex;
  flex-direction: column;
}

.split .copy {
  grid-column: span 6;
}

.split .panel {
  position: relative;
  overflow: hidden;
  grid-column: span 6;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: var(--radius);
  padding: 36px;
}

.split .panel::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(
    circle at var(--mouse-x, 50%) var(--mouse-y, 50%),
    rgba(255, 255, 255, 0.06) 0%,
    transparent 50%
  );
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.25s ease;
}

.split .panel:hover::before {
  opacity: 1;
}

.list-steps {
  display: grid;
  gap: 16px;
}

.list-steps .step {
  border-left: 1px solid var(--line);
  padding-left: 18px;
  opacity: 0.85;
}

.cta {
  text-align: center;
  padding: 90px 0 120px;
}

.cta .game-link {
  display: inline-block;
  padding: 20px 54px;
  background: var(--paper);
  color: var(--ink);
  border-radius: 999px;
  font-weight: 600;
  letter-spacing: 0.8px;
}

.soft-divider {
  height: 1px;
  background: rgba(255, 255, 255, 0.08);
  width: min(300px, 60vw);
  margin: 40px auto;
}

.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

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

@media (max-width: 980px) {
  .top-nav {
    padding: 14px var(--gutter) 12px;
  }
  .top-nav .brand {
    font-size: 20px;
    letter-spacing: 1.4px;
  }
  .top-nav .nav-links {
    flex-wrap: wrap;
    justify-content: center;
    gap: 14px;
    font-size: 11px;
    letter-spacing: 1.6px;
  }
  .content-grid,
  .split {
    grid-template-columns: repeat(1, 1fr);
  }
  .card,
  .split .copy,
  .split .panel {
    grid-column: span 1;
  }
  .hero {
    padding: 120px var(--gutter) 70px;
  }
}

@media (max-width: 768px) {
  .top-nav {
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
  }
  .top-nav .nav-toggle {
    display: inline-flex;
  }
  .top-nav .nav-links {
    position: fixed;
    top: 64px;
    left: var(--gutter);
    right: var(--gutter);
    flex-direction: column;
    gap: 12px;
    padding: 16px 18px;
    background: rgba(8, 9, 10, 0.95);
    border: 1px solid rgba(255, 255, 255, 0.12);
    border-radius: 16px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.45);
    opacity: 0;
    transform: translateY(-12px);
    pointer-events: none;
    transition: opacity 0.25s ease, transform 0.25s ease;
  }
  .top-nav.is-open .nav-links {
    opacity: 1;
    transform: translateY(0);
    pointer-events: auto;
  }
  .top-nav.is-open .nav-toggle span {
    transform: rotate(45deg);
  }
  .top-nav.is-open .nav-toggle span::before {
    transform: rotate(-90deg);
  }
  .top-nav.is-open .nav-toggle span::after {
    opacity: 0;
  }
}

@media (max-width: 640px) {
  .top-nav {
    gap: 6px;
    padding: 12px var(--gutter) 10px;
  }
  .top-nav .brand {
    font-size: 18px;
    letter-spacing: 1px;
  }
  .top-nav .nav-links {
    gap: 10px;
    font-size: 10px;
    letter-spacing: 1.2px;
  }
  .hero {
    min-height: 72vh;
    padding: 100px var(--gutter) 56px;
  }
  .hero h1 {
    font-size: clamp(32px, 9vw, 56px);
    margin-bottom: 12px;
  }
  .hero p {
    font-size: 16px;
  }
  .hero .hero-cta {
    margin-top: 24px;
    padding: 12px 26px;
    font-size: 12px;
    letter-spacing: 1.6px;
  }
  .section-title {
    margin-bottom: 36px;
  }
  .card {
    padding: 28px 24px;
  }
  .split .panel {
    padding: 24px;
  }
  .section {
    padding: 70px 0;
  }
  .cta {
    padding: 70px 0 90px;
  }
}

@media (prefers-reduced-motion: reduce) {
  * {
    scroll-behavior: auto !important;
  }
  .reveal {
    transition: none;
  }
  .card,
  .hero-cta,
  .top-nav .nav-links a::after {
    transition: none;
  }
}