:root {
  --blue: #4682e6;
  --green: #2d5a1e;
  --ink: #1f2b33;
  --muted: #5b6b75;
  --bg: linear-gradient(135deg, #dbeaf2 0%, #e8e4f5 50%, #f5ebe8 100%);
}

@media (prefers-color-scheme: dark) {
  :root {
    --green: #4f9a3a;
    --muted: #9aa8b4;
    --bg: linear-gradient(135deg, #0c1218 0%, #121a28 50%, #14101c 100%);
  }

  #dot stop:last-child,
  #text stop:last-child {
    stop-color: var(--green);
  }

  #text stop:nth-child(2) {
    stop-color: #4a8ab0;
  }
}

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

html,
body {
  height: 100%;
}

body {
  font-family: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  color: var(--ink);
  background: var(--bg);
  background-attachment: fixed;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  overflow-x: hidden;
}

.stage {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2.5rem;
  padding: 3rem 1.5rem 1rem;
  text-align: center;
}

/* ---------- Logo ---------- */

.logo {
  width: min(690px, 92vw);
  height: auto;
  overflow: visible;
  animation: breathe 4s ease-in-out 2.2s infinite;
}

.dot {
  transform-box: fill-box;
  transform-origin: center;
  opacity: 0;
  animation:
    pop-in 0.6s cubic-bezier(0.34, 1.56, 0.64, 1) calc(var(--i) * 0.15s) forwards,
    pulse 1.8s ease-in-out calc(1.4s + var(--i) * 0.15s) infinite;
}

.wordmark {
  font-family: "Inter", system-ui, sans-serif;
  font-weight: 700;
  font-size: 104px;
  letter-spacing: 1px;
  opacity: 0;
  animation: rise-in 0.9s ease-out 0.9s forwards;
}

/* Bolinhas surgem uma a uma */
@keyframes pop-in {
  from {
    opacity: 0;
    transform: scale(0);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

/* Onda de pulso que percorre as bolinhas em sequência */
@keyframes pulse {
  0%,
  100% {
    opacity: 1;
    transform: scale(1);
  }
  30% {
    opacity: 0.55;
    transform: scale(0.78);
  }
  60% {
    opacity: 1;
    transform: scale(1.08);
  }
}

@keyframes rise-in {
  from {
    opacity: 0;
    transform: translateY(24px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* A logo inteira "respira" suavemente */
@keyframes breathe {
  0%,
  100% {
    transform: scale(1);
  }
  50% {
    transform: scale(1.03);
  }
}

/* ---------- Mensagem ---------- */

.message {
  width: 100%;
  max-width: 640px;
  opacity: 0;
  animation: rise-in 0.9s ease-out 1.6s forwards;
}

.badge {
  display: inline-block;
  padding: 0.4rem 1rem;
  border-radius: 999px;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: #fff;
  background: linear-gradient(90deg, var(--blue), var(--green));
  margin-bottom: 1.1rem;
}

.message h1 {
  font-size: clamp(1.8rem, 4.5vw, 2.6rem);
  font-weight: 700;
  line-height: 1.2;
  background: linear-gradient(90deg, var(--blue), #3b6f9a 55%, var(--green));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.slogan {
  font-family: "Inter", system-ui, sans-serif;
  font-size: 26px;
  font-weight: 600;
  font-style: italic;
  opacity: 0;
  animation: rise-in 0.9s ease-out 1.3s forwards;
}

.swap {
  transition:
    opacity 0.5s ease,
    transform 0.5s ease,
    filter 0.5s ease;
}

.swap.is-hidden {
  opacity: 0;
  transform: translateY(-12px);
  filter: blur(4px);
}

.footer {
  text-align: center;
  padding: 1.5rem;
  font-size: 0.85rem;
  color: var(--muted);
}

@media (prefers-reduced-motion: reduce) {
  .logo,
  .dot,
  .wordmark,
  .slogan,
  .message {
    animation: none;
    opacity: 1;
  }
}