/* === SYNTHWAVE === */
/* Retro-futuristic sun and grid */

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

:root {
  --neon-pink: #ff2a6d;
  --neon-blue: #05d9e8;
  --neon-purple: #9d00ff;
  --sun-top: #ff6b35;
  --sun-bottom: #d81b60;
  --dark: #0d0221;
  --grid-purple: rgba(157, 0, 255, 0.5);
}

body {
  font-family: 'Arial', sans-serif;
  background: var(--dark);
  min-height: 100vh;
  overflow-x: hidden;
  color: #fff;
}

/* === SCENE === */
.scene {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100vh;
  overflow: hidden;
  z-index: 0;
  background: linear-gradient(
    180deg,
    #0d0221 0%,
    #1a0533 20%,
    #2d1b4e 40%,
    #541388 55%,
    #d81b60 75%,
    #0d0221 75%
  );
}

/* === STARFIELD === */
.starfield {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 60%;
  background-image:
    radial-gradient(2px 2px at 100px 50px, #fff, transparent),
    radial-gradient(2px 2px at 200px 150px, rgba(255,255,255,0.8), transparent),
    radial-gradient(1px 1px at 300px 80px, #fff, transparent),
    radial-gradient(2px 2px at 400px 200px, rgba(255,255,255,0.6), transparent),
    radial-gradient(1px 1px at 50px 180px, #fff, transparent),
    radial-gradient(2px 2px at 150px 250px, rgba(255,255,255,0.7), transparent),
    radial-gradient(1px 1px at 250px 300px, #fff, transparent),
    radial-gradient(2px 2px at 350px 100px, var(--neon-pink), transparent),
    radial-gradient(1px 1px at 450px 250px, var(--neon-blue), transparent),
    radial-gradient(2px 2px at 500px 50px, #fff, transparent),
    radial-gradient(1px 1px at 550px 180px, rgba(255,255,255,0.5), transparent);
  background-size: 600px 350px;
  animation: twinkle 3s ease-in-out infinite;
}

@keyframes twinkle {
  0%, 100% { opacity: 0.9; }
  50% { opacity: 1; }
}

/* === SUN === */
.sun {
  position: absolute;
  bottom: 25%;
  left: 50%;
  transform: translateX(-50%);
  width: min(350px, 60vw);
  height: min(350px, 60vw);
}

.sun-core {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  border-radius: 50%;
  background: linear-gradient(
    180deg,
    #ffcc00 0%,
    #ff6b35 25%,
    #ff2a6d 50%,
    #d81b60 75%,
    #541388 100%
  );
  box-shadow:
    0 0 60px rgba(255, 107, 53, 0.8),
    0 0 120px rgba(255, 42, 109, 0.5),
    0 0 200px rgba(216, 27, 96, 0.3);
  clip-path: ellipse(50% 50% at 50% 50%);
}

/* Horizontal lines through sun */
.sun-lines {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  border-radius: 50%;
  background: repeating-linear-gradient(
    0deg,
    transparent 0px,
    transparent 8px,
    var(--dark) 8px,
    var(--dark) 12px
  );
  clip-path: ellipse(50% 30% at 50% 80%);
}

/* === MOUNTAINS === */
.mountains {
  position: absolute;
  bottom: 25%;
  left: 0;
  width: 100%;
  height: 15%;
}

.mountain-layer {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 100%;
}

.mountain-layer.back {
  background:
    linear-gradient(125deg, transparent 40%, #1a0533 40%, #1a0533 45%, transparent 45%),
    linear-gradient(55deg, transparent 50%, #1a0533 50%, #1a0533 55%, transparent 55%),
    linear-gradient(110deg, transparent 60%, #1a0533 60%, #1a0533 70%, transparent 70%);
}

.mountain-layer.front {
  background:
    linear-gradient(135deg, transparent 30%, #0d0221 30%, #0d0221 35%, transparent 35%),
    linear-gradient(45deg, transparent 60%, #0d0221 60%, #0d0221 65%, transparent 65%);
  border-top: 2px solid var(--neon-purple);
  opacity: 0.9;
}

/* === GRID PLANE === */
.grid-plane {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 25%;
  background:
    repeating-linear-gradient(
      90deg,
      var(--grid-purple) 0px,
      var(--grid-purple) 1px,
      transparent 1px,
      transparent 50px
    ),
    repeating-linear-gradient(
      0deg,
      var(--grid-purple) 0px,
      var(--grid-purple) 1px,
      transparent 1px,
      transparent 25px
    );
  background-color: var(--dark);
  transform: perspective(400px) rotateX(65deg);
  transform-origin: center top;
  animation: grid-move 1.5s linear infinite;
}

@keyframes grid-move {
  0% { background-position: 0 0, 0 0; }
  100% { background-position: 0 0, 0 25px; }
}

/* === GLOW OVERLAY === */
.glow-overlay {
  position: absolute;
  bottom: 25%;
  left: 0;
  width: 100%;
  height: 5%;
  background: linear-gradient(
    180deg,
    transparent 0%,
    rgba(255, 42, 109, 0.3) 50%,
    var(--dark) 100%
  );
}

/* === CONTENT === */
.content {
  position: relative;
  z-index: 10;
  max-width: 900px;
  margin: 0 auto;
  padding: 2rem 1.5rem;
}

/* === HERO === */
.hero {
  text-align: center;
  padding: 4rem 0 3rem;
}

.title {
  font-size: clamp(3.5rem, 14vw, 9rem);
  font-weight: 900;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  line-height: 0.85;
  display: flex;
  flex-direction: column;
}

.title .outline {
  color: transparent;
  -webkit-text-stroke: 2px var(--neon-blue);
  text-shadow:
    0 0 10px var(--neon-blue),
    0 0 20px var(--neon-blue),
    0 0 40px var(--neon-blue);
}

.title .filled {
  background: linear-gradient(180deg, #fff 0%, var(--neon-pink) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  filter: drop-shadow(0 0 10px var(--neon-pink)) drop-shadow(0 0 30px var(--neon-pink));
}

.tagline {
  margin-top: 1.5rem;
  font-size: clamp(0.9rem, 3vw, 1.2rem);
  letter-spacing: 0.5em;
  color: var(--neon-blue);
  text-shadow: 0 0 20px var(--neon-blue);
}

/* === CARDS === */
.cards {
  display: grid;
  gap: 2rem;
  margin: 3rem 0;
}

.card {
  background: linear-gradient(
    135deg,
    rgba(157, 0, 255, 0.1) 0%,
    rgba(5, 217, 232, 0.05) 100%
  );
  border: 1px solid rgba(157, 0, 255, 0.4);
  padding: 2rem;
  position: relative;
  overflow: hidden;
}

.card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 4px;
  height: 100%;
  background: linear-gradient(180deg, var(--neon-blue), var(--neon-pink));
  box-shadow: 0 0 20px var(--neon-pink);
}

.card-number {
  font-size: 3rem;
  font-weight: 900;
  color: transparent;
  -webkit-text-stroke: 1px rgba(255, 42, 109, 0.3);
  position: absolute;
  top: 0.5rem;
  right: 1rem;
}

.card h2 {
  font-size: clamp(1.1rem, 4vw, 1.4rem);
  color: var(--neon-blue);
  margin-bottom: 1rem;
  letter-spacing: 0.15em;
  text-shadow: 0 0 10px var(--neon-blue);
}

.card p {
  color: rgba(255, 255, 255, 0.8);
  line-height: 1.8;
  font-size: clamp(0.9rem, 2.5vw, 1rem);
}

/* === FOOTER === */
.footer {
  text-align: center;
  padding: 4rem 0 2rem;
}

.equalizer {
  display: flex;
  justify-content: center;
  align-items: flex-end;
  gap: 4px;
  height: 40px;
  margin-bottom: 1.5rem;
}

.equalizer span {
  width: 6px;
  background: linear-gradient(180deg, var(--neon-blue), var(--neon-pink));
  animation: equalizer 0.8s ease-in-out infinite;
  box-shadow: 0 0 10px var(--neon-pink);
}

.equalizer span:nth-child(1) { animation-delay: 0s; height: 20px; }
.equalizer span:nth-child(2) { animation-delay: 0.1s; height: 30px; }
.equalizer span:nth-child(3) { animation-delay: 0.2s; height: 40px; }
.equalizer span:nth-child(4) { animation-delay: 0.3s; height: 25px; }
.equalizer span:nth-child(5) { animation-delay: 0.4s; height: 35px; }
.equalizer span:nth-child(6) { animation-delay: 0.5s; height: 28px; }
.equalizer span:nth-child(7) { animation-delay: 0.6s; height: 38px; }
.equalizer span:nth-child(8) { animation-delay: 0.7s; height: 22px; }
.equalizer span:nth-child(9) { animation-delay: 0.8s; height: 32px; }
.equalizer span:nth-child(10) { animation-delay: 0.9s; height: 18px; }

@keyframes equalizer {
  0%, 100% { transform: scaleY(0.5); }
  50% { transform: scaleY(1); }
}

.copyright {
  color: rgba(255, 255, 255, 0.4);
  font-size: 0.8rem;
  letter-spacing: 0.3em;
}

/* === RESPONSIVE === */
@media (min-width: 600px) {
  .title {
    flex-direction: row;
    justify-content: center;
    gap: 0.2em;
  }

  .cards {
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  }
}

@media (min-width: 900px) {
  .content {
    padding: 3rem 2rem;
  }

  .hero {
    padding: 6rem 0 4rem;
  }
}

/* === REDUCED MOTION === */
@media (prefers-reduced-motion: reduce) {
  .starfield,
  .grid-plane,
  .equalizer span {
    animation: none;
  }

  .equalizer span {
    transform: scaleY(1);
  }
}