@font-face {
  font-family: "Aritmetris Notebook";
  src: url("assets/fonts/ShantellSans-Regular.ttf") format("truetype");
  font-style: normal;
  font-weight: 400;
  font-display: swap;
}

@font-face {
  font-family: "Aritmetris Notebook";
  src: url("assets/fonts/ShantellSans-Bold.ttf") format("truetype");
  font-style: normal;
  font-weight: 700;
  font-display: swap;
}

@font-face {
  font-family: "Aritmetris Notebook";
  src: url("assets/fonts/ShantellSans-ExtraBold.ttf") format("truetype");
  font-style: normal;
  font-weight: 800;
  font-display: swap;
}

:root {
  --paper: #f5edd6;
  --paper-strong: #efe3c1;
  --paper-shadow: rgba(120, 90, 38, 0.18);
  --ink: #16324f;
  --ink-soft: #4d6580;
  --accent: #1d5d8f;
  --accent-strong: #0f4e7b;
  --accent-warm: #d48a2f;
  --line-blue: rgba(89, 145, 206, 0.14);
  --line-blue-strong: rgba(89, 145, 206, 0.3);
  --margin-red: rgba(205, 72, 72, 0.5);
  --glow: rgba(255, 247, 220, 0.75);
  --shadow: 0 24px 60px rgba(98, 76, 38, 0.18);
  --font-handwritten: "Aritmetris Notebook", cursive;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  width: 100%;
  min-height: 100%;
  overflow: hidden;
}

body {
  min-height: 100vh;
  color: var(--ink);
  font-family: var(--font-handwritten);
  background:
    radial-gradient(circle at top, rgba(255, 251, 239, 0.94), rgba(245, 236, 214, 0.78) 38%, transparent 72%),
    linear-gradient(180deg, #dfd1ad 0%, #cfbe95 100%);
}

body::before,
body::after {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
}

body::before {
  background:
    linear-gradient(
      90deg,
      transparent 0,
      transparent min(9vw, 72px),
      var(--margin-red) min(9vw, 72px),
      var(--margin-red) calc(min(9vw, 72px) + 2px),
      transparent calc(min(9vw, 72px) + 2px)
    ),
    repeating-linear-gradient(
      180deg,
      transparent 0 34px,
      var(--line-blue) 34px 36px
    );
  opacity: 0.95;
}

body::after {
  background:
    radial-gradient(circle at 50% 14%, rgba(255, 255, 255, 0.52), transparent 24%),
    radial-gradient(circle at 80% 25%, rgba(255, 255, 255, 0.18), transparent 20%);
}

.landing {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 24px;
}

.hero-card {
  position: relative;
  width: min(100%, 780px);
  min-height: min(88vh, 860px);
  display: grid;
  justify-items: center;
  align-content: center;
  gap: 18px;
  padding: clamp(24px, 4vw, 40px);
  text-align: center;
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.52), rgba(255, 255, 255, 0.14)),
    repeating-linear-gradient(180deg, transparent 0 34px, var(--line-blue-strong) 34px 36px),
    var(--paper);
  border: 1px solid rgba(65, 97, 132, 0.16);
  border-radius: 34px 30px 36px 28px;
  box-shadow: var(--shadow);
}

.hero-card::after {
  content: "";
  position: absolute;
  left: 20px;
  right: 20px;
  bottom: 16px;
  height: 2px;
  background: linear-gradient(90deg, transparent, rgba(27, 78, 118, 0.42), transparent);
}

.eyebrow {
  margin: 0;
  font-size: clamp(1rem, 2vw, 1.15rem);
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--ink-soft);
  text-transform: uppercase;
}

.hero-title {
  margin: 0;
  max-width: 10ch;
  color: var(--accent);
  font-size: clamp(3rem, 8.2vw, 5.8rem);
  font-weight: 800;
  letter-spacing: 0.03em;
  line-height: 0.92;
  text-shadow: 1px 3px 0 rgba(255, 255, 255, 0.54);
  animation: title-write 1.6s steps(10, end) both;
  overflow: hidden;
  white-space: nowrap;
}

.logo-shell {
  position: relative;
  display: grid;
  place-items: center;
  width: min(50vw, 340px);
  aspect-ratio: 1;
}

.logo-shell::before {
  content: "";
  position: absolute;
  inset: 9%;
  border-radius: 32% 36% 30% 34%;
  background:
    radial-gradient(circle, rgba(255, 247, 220, 0.98) 0%, rgba(255, 247, 220, 0.62) 48%, rgba(255, 247, 220, 0) 78%);
  filter: blur(8px);
}

.hero-logo {
  position: relative;
  width: 100%;
  height: auto;
  object-fit: contain;
  filter: drop-shadow(0 18px 26px rgba(88, 67, 36, 0.24));
  animation: logo-float 4.6s ease-in-out infinite;
}

.hero-copy {
  margin: 0;
  max-width: 18ch;
  color: var(--accent);
  font-size: clamp(1.35rem, 3vw, 1.85rem);
  font-weight: 700;
  line-height: 1.3;
}

.play-button {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: min(100%, 280px);
  padding: 18px 34px 20px;
  border-radius: 999px;
  color: #fffef7;
  font-size: clamp(1.5rem, 4vw, 2rem);
  font-weight: 800;
  letter-spacing: 0.08em;
  text-decoration: none;
  background:
    linear-gradient(180deg, #efb154 0%, #d88f33 55%, #bb7221 100%);
  box-shadow:
    0 16px 30px rgba(168, 106, 33, 0.28),
    inset 0 2px 0 rgba(255, 247, 220, 0.55),
    inset 0 -3px 0 rgba(116, 61, 12, 0.22);
  transition: transform 0.18s ease, box-shadow 0.18s ease, filter 0.18s ease;
}

.play-button::before {
  content: "";
  position: absolute;
  inset: 4px;
  border-radius: inherit;
  border: 1px solid rgba(255, 244, 223, 0.32);
}

.play-button:hover,
.play-button:focus-visible {
  transform: translateY(-2px) scale(1.03);
  box-shadow:
    0 22px 36px rgba(168, 106, 33, 0.34),
    inset 0 2px 0 rgba(255, 247, 220, 0.6),
    inset 0 -3px 0 rgba(116, 61, 12, 0.22);
  filter: saturate(1.04);
  outline: none;
}

.play-button:active {
  transform: translateY(1px) scale(0.99);
}

@keyframes title-write {
  from {
    max-width: 0;
  }

  to {
    max-width: 10ch;
  }
}

@keyframes logo-float {
  0%,
  100% {
    transform: translateY(0);
  }

  50% {
    transform: translateY(-8px);
  }
}

@media (max-width: 720px) {
  .landing {
    padding: 14px;
  }

  .hero-card {
    width: 100%;
    min-height: calc(100vh - 28px);
    gap: 16px;
    padding: 22px 18px 26px;
    border-radius: 28px;
  }

  .hero-title {
    letter-spacing: 0.02em;
  }

  .logo-shell {
    width: min(62vw, 280px);
  }

  .play-button {
    min-width: min(100%, 240px);
    padding: 16px 28px 18px;
  }
}

@media (max-width: 420px), (max-height: 760px) {
  .hero-card {
    align-content: center;
    gap: 14px;
  }

  .eyebrow {
    font-size: 0.92rem;
  }

  .hero-copy {
    font-size: 1.2rem;
  }

  .logo-shell {
    width: min(52vw, 220px);
  }
}