:root {
  --green: #00D991;
  --bg: #08090A;
  --white: #FAFAFA;
}

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

html,
body {
  height: 100%;
}

body {
  background: var(--bg);
  color: var(--white);
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  -webkit-font-smoothing: antialiased;
  overflow: hidden;
}

.page {
  position: relative;
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  align-items: center;
  padding: clamp(28px, 5vh, 48px) 24px clamp(22px, 4vh, 36px);
  overflow: hidden;
}

/* ---- Pulso cardíaco de fundo ---- */

.pulse {
  position: absolute;
  top: 52%;
  left: 50%;
  border-radius: 50%;
  pointer-events: none;
  transform: translate(-50%, -50%);
}

.pulse--core {
  width: min(80vmin, 700px);
  height: min(80vmin, 700px);
  background: radial-gradient(circle, rgba(0, 217, 145, .20) 0%, rgba(0, 217, 145, .07) 44%, transparent 70%);
  filter: blur(2px);
  animation: lubdub 2.8s ease-in-out infinite;
}

.pulse--halo {
  width: min(120vmin, 1000px);
  height: min(120vmin, 1000px);
  background: radial-gradient(circle, rgba(0, 217, 145, .08) 0%, transparent 62%);
  animation: lubdub 2.8s ease-in-out infinite .12s;
}

.pulse--ring {
  width: min(60vmin, 510px);
  height: min(60vmin, 510px);
  border: 1px solid rgba(0, 217, 145, .3);
  animation: ringout 2.8s ease-out infinite;
}

@keyframes lubdub {
  0%   { transform: translate(-50%, -50%) scale(1);    opacity: .28; }
  12%  { transform: translate(-50%, -50%) scale(1.16); opacity: .56; }
  24%  { transform: translate(-50%, -50%) scale(1.02); opacity: .32; }
  36%  { transform: translate(-50%, -50%) scale(1.12); opacity: .5;  }
  52%  { transform: translate(-50%, -50%) scale(1);    opacity: .26; }
  100% { transform: translate(-50%, -50%) scale(1);    opacity: .28; }
}

@keyframes ringout {
  0%   { transform: translate(-50%, -50%) scale(.55); opacity: .22; }
  70%  { opacity: .05; }
  100% { transform: translate(-50%, -50%) scale(1.5); opacity: 0; }
}

/* ---- Conteúdo ---- */

.logo {
  position: relative;
  width: clamp(120px, 16vw, 160px);
  height: auto;
}

.hero {
  position: relative;
  text-align: center;
}

.hero h1 {
  font-size: clamp(52px, 11vw, 96px);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1;
  color: var(--green);
}

.tagline {
  margin-top: clamp(20px, 3.5vh, 30px);
  font-size: clamp(11px, 1.4vw, 13px);
  font-weight: 500;
  letter-spacing: .34em;
  text-indent: .34em;
  text-transform: uppercase;
  color: rgba(250, 250, 250, .48);
}

.tagline .dot {
  display: inline-block;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--green);
  margin-right: 12px;
  vertical-align: 1px;
  animation: blink 2.8s ease-in-out infinite;
}

@keyframes blink {
  0%, 100% { opacity: .35; }
  50%      { opacity: 1; }
}

/* ---- Footer ---- */

footer {
  position: relative;
  font-size: 12px;
  letter-spacing: .04em;
  color: rgba(250, 250, 250, .32);
  text-align: center;
}

footer a {
  color: rgba(250, 250, 250, .45);
  text-decoration: none;
  border-bottom: 1px solid rgba(250, 250, 250, .18);
  transition: color .25s ease, border-color .25s ease;
}

footer a:hover,
footer a:focus-visible {
  color: var(--green);
  border-color: rgba(0, 217, 145, .5);
}

footer a:focus-visible {
  outline: 2px solid rgba(0, 217, 145, .6);
  outline-offset: 3px;
  border-radius: 2px;
}

/* ---- Acessibilidade: movimento reduzido ---- */

@media (prefers-reduced-motion: reduce) {
  .pulse--core,
  .pulse--halo {
    animation: none;
    opacity: .3;
  }

  .pulse--ring {
    display: none;
  }

  .tagline .dot {
    animation: none;
    opacity: 1;
  }
}