/* ── Reset & Base ── */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --magenta: #d946a8;
  --blue: #6366f1;
  --dark: #0a0a0f;
  --dark-surface: #12121a;
  --text: #e4e4e7;
  --text-muted: #71717a;
}

html, body {
  height: 100%;
  overflow: hidden;
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background: var(--dark);
  color: var(--text);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ── Canvas background ── */
#bg-canvas {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
  opacity: 0.4;
}

/* ── Grain overlay ── */
.grain {
  position: fixed;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  z-index: 1;
  pointer-events: none;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)' opacity='0.03'/%3E%3C/svg%3E");
  opacity: 0.5;
}

/* ── Ambient glow ── */
.glow {
  position: fixed;
  border-radius: 50%;
  filter: blur(120px);
  z-index: 0;
  pointer-events: none;
  opacity: 0;
  transition: opacity 2s ease;
}

.glow--magenta {
  width: 500px;
  height: 500px;
  background: var(--magenta);
  top: -15%;
  right: -10%;
  opacity: 0.07;
}

.glow--blue {
  width: 600px;
  height: 600px;
  background: var(--blue);
  bottom: -20%;
  left: -15%;
  opacity: 0.06;
}

.glow.visible {
  opacity: 1;
}

.glow--magenta.visible { opacity: 0.07; }
.glow--blue.visible { opacity: 0.06; }

/* ── Mouse-follow light ── */
.mouse-glow {
  position: fixed;
  width: 600px;
  height: 600px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(217, 70, 168, 0.06) 0%, rgba(99, 102, 241, 0.03) 40%, transparent 70%);
  pointer-events: none;
  z-index: 1;
  transform: translate(-50%, -50%);
  transition: opacity 0.3s ease;
  opacity: 0;
}

/* ── Main layout ── */
.container {
  position: relative;
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  height: 100%;
  padding: 2rem;
  text-align: center;
}

/* ── Logo ── */
.logo-wrapper {
  opacity: 0;
  transform: translateY(20px) scale(0.97);
  animation: fadeUp 1s cubic-bezier(0.16, 1, 0.3, 1) 0.3s forwards;
}

.logo {
  width: min(280px, 65vw);
  height: auto;
  user-select: none;
  -webkit-user-drag: none;
}

/* ── Claim ── */
.claim {
  margin-top: 1.5rem;
  font-size: clamp(0.85rem, 2.5vw, 1.05rem);
  font-weight: 300;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-muted);
  opacity: 0;
  transform: translateY(12px);
  animation: fadeUp 1s cubic-bezier(0.16, 1, 0.3, 1) 0.7s forwards;
}

/* ── Divider line ── */
.divider {
  width: 0;
  height: 1px;
  margin-top: 2.5rem;
  background: linear-gradient(90deg, transparent, var(--magenta), var(--blue), transparent);
  opacity: 0;
  animation: expandLine 1.2s cubic-bezier(0.16, 1, 0.3, 1) 1.1s forwards;
}

/* ── CTA Button ── */
.cta {
  margin-top: 2.5rem;
  opacity: 0;
  transform: translateY(12px);
  animation: fadeUp 1s cubic-bezier(0.16, 1, 0.3, 1) 1.4s forwards;
}

.cta-link {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.85rem 2rem;
  font-size: 0.85rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  text-decoration: none;
  color: var(--text);
  background: transparent;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 100px;
  cursor: pointer;
  transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
  overflow: hidden;
}

.cta-link::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: linear-gradient(135deg, var(--magenta), var(--blue));
  opacity: 0;
  transition: opacity 0.4s ease;
  z-index: -1;
}

.cta-link:hover {
  border-color: transparent;
  transform: translateY(-2px);
  box-shadow: 0 8px 32px rgba(217, 70, 168, 0.15), 0 4px 16px rgba(99, 102, 241, 0.1);
}

.cta-link:hover::before {
  opacity: 1;
}

.cta-link:active {
  transform: translateY(0);
}

.cta-icon {
  width: 16px;
  height: 16px;
  transition: transform 0.3s ease;
}

.cta-link:hover .cta-icon {
  transform: translateX(2px);
}

/* ── Footer ── */
.footer {
  position: fixed;
  bottom: 0;
  left: 0;
  width: 100%;
  z-index: 2;
  padding: 1.2rem;
  text-align: center;
  font-size: 0.7rem;
  letter-spacing: 0.06em;
  color: var(--text-muted);
  opacity: 0;
  animation: fadeUp 1s cubic-bezier(0.16, 1, 0.3, 1) 1.8s forwards;
}

/* ── Animations ── */
@keyframes fadeUp {
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

@keyframes expandLine {
  to {
    width: min(200px, 50vw);
    opacity: 0.6;
  }
}

/* ── Responsive ── */
@media (min-width: 768px) {
  .logo {
    width: min(340px, 30vw);
  }

  .claim {
    margin-top: 1.8rem;
  }

  .mouse-glow {
    width: 800px;
    height: 800px;
  }
}

@media (min-width: 1200px) {
  .logo {
    width: 380px;
  }
}

/* ── Prefers reduced motion ── */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }

  .mouse-glow,
  #bg-canvas {
    display: none;
  }
}