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

:root {
  --paper: #dddddd;
  --panel: #ffffff;
  --ink: #111111;
  --line: #242424;
  --blue: #318cd6;
  --red: #ff3725;
  --green: #077f56;
  --purple: #a980ff;
  --yellow: #ffb800;
  --orange: #ff6d1b;
  --pink: #ffa6b4;
}

html {
  scroll-behavior: smooth;
}

body {
  max-width: 70%;
  margin: 0 auto;
  background-color: var(--paper);
  color: var(--ink);
}

h1 {
  font-family: "Google Sans Code", monospace;
  font-size: 30px;
  font-weight: 700;
  line-height: 32px;
}

h2 {
  font-family: "Google Sans Code", monospace;
  font-size: 13px;
  font-weight: 700;
  line-height: 17px;
  text-transform: uppercase;
}

p {
  font-family: "Google Sans Code", monospace;
  font-size: 18px;
  font-weight: 500;
  line-height: 23px;
}

a {
  color: var(--ink);
  text-decoration: none;
}

a:hover {
  opacity: 0.35;
}

header {
  position: fixed;
  top: 0;
  z-index: 10;
  display: flex;
  width: 100%;
  max-width: 70%;
  flex-direction: row;
  justify-content: space-between;
  gap: 40px;
  margin-bottom: 20px;
  padding: 25px 40px;
  border: 3px solid var(--line);
  border-top: 0;
  border-bottom-right-radius: 40px;
  border-bottom-left-radius: 40px;
  background: transparent;
  transition:
    background 0.3s ease,
    backdrop-filter 0.3s ease,
    width 0.4s ease,
    max-width 0.4s ease,
    left 0.4s ease,
    right 0.4s ease;
}

header.scrolled {
  left: 50%;
  right: auto;
  width: 40%;
  max-width: 600px;
  background: var(--paper);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  transform: translateX(-50%);
}

.logo-container {
  display: flex;
  flex-direction: row;
  align-items: center;
  justify-content: flex-start;
  text-align: left;
}

.logo-container img {
  display: block;
}

.nav-menu-container {
  display: flex;
  flex-direction: row;
  align-items: center;
  justify-content: flex-end;
  gap: 40px;
  font-family: "Google Sans Code", monospace;
  font-weight: 700;
  text-transform: uppercase;
}

.nav-menu-container,
a {
  transition: 0.3s ease;
}

.hamburger {
  display: none;
  border: none;
  background: none;
  cursor: pointer;
  font-size: 28px;
}

section {
  z-index: 1;
  display: flex;
  min-height: 80vh;
  margin-top: 10px;
  margin-bottom: 10px;
  padding-right: 40px;
  padding-left: 40px;
  border: 3px solid var(--line);
  border-radius: 40px;
  background-color: var(--paper);
}

#hero {
  width: 100%;
  flex-direction: row;
  gap: 20px;
  margin-top: 125px;
}

.hero-left {
  display: flex;
  width: 50%;
  flex-direction: column;
  align-items: flex-start;
  justify-content: center;
  gap: 10px;
  padding: 25px 40px;
  text-align: left;
}

.wordmark {
  width: min(100%, 260px);
  height: auto;
  margin-bottom: 4px;
}

.app-store-link {
  display: inline-block;
  margin-top: 10px;
}

.app-store-badge {
  width: 150px;
  height: auto;
  cursor: pointer;
  transition: opacity 0.5s ease;
}

.app-store-badge:hover {
  opacity: 0.8;
}

.hero-right {
  display: flex;
  width: 50%;
  align-items: flex-end;
  justify-content: center;
  padding: 0;
}

.hero-phone-image {
  display: block;
  width: auto;
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
  object-position: bottom center;
}

#feature-1,
#feature-main,
#feature-2,
#feature-4,
#privacy,
#support {
  width: 100%;
  flex-direction: row;
  gap: 20px;
}

#feature-1 {
  justify-content: center;
}

.feature-1-left,
.feature-1-right {
  width: 30%;
}

.feature-1-center {
  display: flex;
  width: 30%;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding-top: 25px;
  padding-bottom: 25px;
  text-align: center;
}

.feature-main-left,
.feature-2-left,
.feature-4-left {
  display: flex;
  width: 50%;
  flex-direction: column;
  align-items: flex-start;
  justify-content: center;
  gap: 10px;
  padding: 25px 40px;
  text-align: left;
}

.feature-main-right,
.feature-2-right,
.feature-4-right {
  width: 50%;
}

.image-panel {
  display: flex;
  align-items: flex-end;
  justify-content: flex-end;
  overflow: hidden;
  padding: 0;
}

.image-panel img {
  display: block;
  width: auto;
  max-width: 100%;
  height: 100%;
  object-fit: contain;
  object-position: right center;
}

.duel-image-panel img {
  max-width: none;
}

#privacy {
  min-height: auto;
  margin-top: 125px;
  padding-top: 40px;
  padding-bottom: 60px;
}

.privacy-left,
.support-left {
  display: flex;
  width: 30%;
  flex-direction: column;
  gap: 10px;
  padding: 25px 40px 25px 0;
}

.privacy-right,
.support-right {
  display: flex;
  width: 70%;
  flex-direction: column;
  gap: 28px;
  padding: 25px 0 25px 40px;
}

#support {
  min-height: calc(100vh - 180px);
  margin-top: 125px;
  padding-top: 40px;
  padding-bottom: 60px;
}

.support-right iframe {
  width: 100%;
  min-height: 650px;
  border: 3px solid var(--line);
  border-radius: 40px;
  background: var(--panel);
}

.policy-block {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.policy-block a {
  text-decoration: underline;
}

.visual-panel {
  position: relative;
  min-height: 420px;
  overflow: hidden;
}

.visual-panel::before {
  position: absolute;
  inset: auto 50% 0 auto;
  width: min(78%, 280px);
  aspect-ratio: 0.58;
  border: 3px solid var(--line);
  border-bottom: 0;
  border-radius: 34px 34px 0 0;
  background:
    linear-gradient(var(--paper), var(--paper)) padding-box,
    repeating-linear-gradient(
      90deg,
      transparent 0 15.8%,
      var(--line) 15.8% 16.5%
    ),
    repeating-linear-gradient(
      0deg,
      transparent 0 15.8%,
      var(--line) 15.8% 16.5%
    );
  content: "";
  transform: translateX(50%);
}

.visual-panel::after {
  position: absolute;
  inset: auto 50% 54px auto;
  display: block;
  width: min(58%, 205px);
  aspect-ratio: 1;
  border-top: 2px solid var(--line);
  border-left: 2px solid var(--line);
  background:
    radial-gradient(circle at 16% 16%, var(--blue) 0 9%, transparent 10%),
    radial-gradient(circle at 83% 16%, var(--red) 0 9%, transparent 10%),
    radial-gradient(circle at 50% 50%, var(--purple) 0 9%, transparent 10%),
    radial-gradient(circle at 16% 83%, var(--yellow) 0 9%, transparent 10%),
    radial-gradient(circle at 83% 83%, var(--green) 0 9%, transparent 10%),
    repeating-linear-gradient(90deg, transparent 0 16.2%, var(--line) 16.2% 17%),
    repeating-linear-gradient(0deg, transparent 0 16.2%, var(--line) 16.2% 17%),
    var(--paper);
  content: "";
  transform: translateX(50%);
}

.free-play-visual::after {
  background:
    linear-gradient(90deg, var(--blue) 8%, transparent 8% 100%),
    radial-gradient(circle at 16% 16%, var(--blue) 0 9%, transparent 10%),
    radial-gradient(circle at 83% 50%, var(--orange) 0 9%, transparent 10%),
    radial-gradient(circle at 50% 83%, var(--pink) 0 9%, transparent 10%),
    repeating-linear-gradient(90deg, transparent 0 16.2%, var(--line) 16.2% 17%),
    repeating-linear-gradient(0deg, transparent 0 16.2%, var(--line) 16.2% 17%),
    var(--paper);
}

.daily-visual::before {
  width: min(68%, 260px);
}

.daily-visual::after {
  background:
    radial-gradient(circle at 50% 18%, var(--line) 0 11%, transparent 12%),
    linear-gradient(var(--red), var(--red)) 50% 50% / 42% 10% no-repeat,
    linear-gradient(var(--line), var(--line)) 50% 68% / 62% 2px no-repeat,
    linear-gradient(var(--line), var(--line)) 50% 79% / 46% 2px no-repeat,
    var(--paper);
}

.duel-visual::after {
  background:
    linear-gradient(135deg, transparent 0 46%, var(--line) 46% 54%, transparent 54%),
    radial-gradient(circle at 22% 26%, var(--blue) 0 8%, transparent 9%),
    radial-gradient(circle at 78% 74%, var(--red) 0 8%, transparent 9%),
    repeating-linear-gradient(90deg, transparent 0 16.2%, var(--line) 16.2% 17%),
    repeating-linear-gradient(0deg, transparent 0 16.2%, var(--line) 16.2% 17%),
    var(--paper);
}

.leaderboard-visual::after {
  aspect-ratio: 0.85;
  background:
    linear-gradient(var(--line), var(--line)) 14% 20% / 72% 2px no-repeat,
    linear-gradient(var(--line), var(--line)) 14% 41% / 72% 2px no-repeat,
    linear-gradient(var(--line), var(--line)) 14% 62% / 72% 2px no-repeat,
    linear-gradient(var(--line), var(--line)) 14% 83% / 72% 2px no-repeat,
    radial-gradient(circle at 18% 12%, var(--yellow) 0 6%, transparent 7%),
    radial-gradient(circle at 18% 33%, var(--blue) 0 6%, transparent 7%),
    radial-gradient(circle at 18% 54%, var(--green) 0 6%, transparent 7%),
    radial-gradient(circle at 18% 75%, var(--purple) 0 6%, transparent 7%),
    var(--paper);
}

footer {
  display: flex;
  width: 100%;
  flex-direction: row;
  justify-content: space-between;
  gap: 40px;
  padding: 25px 40px;
  border: 3px solid var(--line);
  border-bottom: 0;
  border-top-left-radius: 40px;
  border-top-right-radius: 40px;
  background-color: var(--paper);
}

.fade-in {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s ease-out, transform 0.8s ease-out;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

@media only screen and (max-width: 600px) {
  body {
    max-width: 95%;
  }

  header {
    width: 95%;
    max-width: 1000px;
    gap: 20px;
    padding: 15px 40px;
  }

  header.scrolled {
    width: 95%;
    max-width: 1000px;
  }

  .hamburger {
    z-index: 20;
    display: block;
  }

  .nav-menu-container {
    position: absolute;
    top: 70px;
    right: 20px;
    display: none;
    flex-direction: column;
    gap: 20px;
    border-radius: 20px;
    padding: 15px;
    background: rgba(255,255,255,0.92);
    box-shadow: 0 4px 15px rgba(0,0,0,0.1);
    backdrop-filter: blur(12px);
  }

  .nav-menu-container.show {
    display: flex;
  }

  section {
    min-height: 70vh;
    padding-right: 20px;
    padding-left: 20px;
  }

  #hero {
    flex-direction: column;
    justify-content: flex-end;
    gap: 0;
    margin-top: 85px;
  }

  .hero-left {
    width: 100%;
    align-items: center;
    text-align: center;
  }

  .hero-right {
    width: 100%;
    height: 65vh;
    padding-top: 0;
  }

  .hero-phone-image {
    width: auto;
    max-width: 100%;
    max-height: 100%;
  }

  #feature-1 {
    flex-direction: column-reverse;
    justify-content: flex-start;
    gap: 0;
  }

  .feature-1-right {
    display: none;
  }

  .feature-1-center,
  .feature-1-left {
    width: 100%;
  }

  #feature-main,
  #feature-4,
  #privacy,
  #support {
    flex-direction: column;
    justify-content: flex-end;
    gap: 0;
  }

  #feature-2 {
    flex-direction: column;
    justify-content: flex-start;
    gap: 0;
  }

  .feature-main-left,
  .feature-2-left,
  .feature-4-left,
  .privacy-left,
  .privacy-right,
  .support-left,
  .support-right {
    width: 100%;
    align-items: center;
    padding-right: 20px;
    padding-left: 20px;
    text-align: center;
  }

  #privacy,
  #support {
    margin-top: 85px;
    padding-top: 24px;
    padding-bottom: 36px;
  }

  .privacy-right,
  .support-right {
    gap: 24px;
  }

  .support-right iframe {
    min-height: 620px;
    border-radius: 24px;
  }

  .feature-main-right,
  .feature-2-right,
  .feature-4-right,
  .visual-panel {
    width: 100%;
    min-height: 50vh;
  }

  .image-panel img {
    width: 100%;
    height: auto;
    max-height: 50vh;
    object-position: bottom center;
  }

  footer {
    flex-direction: column;
    justify-content: center;
    gap: 20px;
    padding: 20px 40px;
  }
}