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

:root {
  --bg: #050a0f;
  --bg2: #0a1520;
  --accent: #00ffe0;
  --danger: #ff4060;
  --text: #c8dde8;
  --muted: #4a6a7a;
  --glow: 0 0 12px #00ffe088, 0 0 40px #00ffe030;
  --font-mono: 'Share Tech Mono', monospace;
  --font-hd: 'Rajdhani', sans-serif;
  --font-body: 'Exo 2', sans-serif;
}

html {
  scroll-behavior: smooth;
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.7;
  overflow-x: hidden;
}

body::before {
  content: '';
  position: fixed;
  inset: 0;
  background: repeating-linear-gradient(
    to bottom,
    transparent 0px,
    transparent 3px,
    rgba(0, 0, 0, 0.07) 3px,
    rgba(0, 0, 0, 0.07) 4px
  );
  pointer-events: none;
  z-index: 100;
}

body::after {
  content: '';
  position: fixed;
  inset: 0;
  background-image:
    linear-gradient(rgba(0, 255, 224, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 255, 224, 0.03) 1px, transparent 1px);
  background-size: 48px 48px;
  pointer-events: none;
  z-index: 0;
}

header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 500;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0 40px;
  height: 64px;
  background: rgba(5, 10, 15, 0.88);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(0, 255, 224, 0.12);
}

.logo {
  font-family: var(--font-mono);
  font-size: 1.1rem;
  color: var(--accent);
  text-shadow: var(--glow);
  display: flex;
  align-items: center;
  gap: 8px;
}

.logo span {
  color: var(--text);
}

main {
  position: relative;
  z-index: 1;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 80px 24px 48px;
}

h1 {
  font-family: var(--font-hd);
  font-size: clamp(2.2rem, 5vw, 3.5rem);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -1px;
  color: #fff;
  margin-bottom: 20px;
}

h1 .accent {
  color: var(--accent);
  text-shadow: var(--glow);
}

.subtitle {
  margin-bottom: 40px;
  font-size: 1.1rem;
  color: var(--text);
  max-width: 500px;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 13px 28px;
  font-family: var(--font-hd);
  font-weight: 700;
  font-size: 0.9rem;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  border: none;
  border-radius: 3px;
  cursor: pointer;
  transition: all 0.2s;
  text-decoration: none;
}

.btn-primary {
  background: var(--accent);
  color: #050a0f;
  box-shadow: var(--glow);
}

.btn-primary:hover {
  background: #fff;
  box-shadow: 0 0 24px #00ffe0cc;
  transform: translateY(-2px);
}

.btn-outline {
  background: transparent;
  color: var(--accent);
  border: 1.5px solid var(--accent);
}

.btn-outline:hover {
  background: rgba(0, 255, 224, 0.08);
  transform: translateY(-2px);
}

.caixa-verificacao {
  background: var(--bg2);
  border: 1px solid rgba(0, 255, 224, 0.15);
  border-radius: 8px;
  padding: 48px;
  max-width: 640px;
}

.caixa-verificacao h2 {
  font-family: var(--font-hd);
  font-size: 1.5rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 16px;
  text-align: left;
}

.caixa-verificacao p {
  font-size: 1rem;
  color: var(--text);
  margin-bottom: 28px;
  text-align: left;
}

.linha-entrada {
  display: flex;
  gap: 12px;
  margin-bottom: 24px;
}

.linha-entrada input {
  flex: 1;
  background: rgba(0, 255, 224, 0.05);
  border: 1px solid rgba(0, 255, 224, 0.2);
  border-radius: 4px;
  padding: 13px 18px;
  font-family: var(--font-mono);
  font-size: 0.9rem;
  color: var(--text);
  outline: none;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.linha-entrada input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(0, 255, 224, 0.08);
}

.barra-medidor {
  height: 4px;
  background: rgba(255, 255, 255, 0.05);
  border-radius: 99px;
  overflow: hidden;
  margin-bottom: 8px;
}

.preenchimento-medidor {
  height: 100%;
  width: 0%;
  border-radius: 99px;
  transition: width 0.4s, background 0.4s;
}

.rotulo-medidor {
  font-family: var(--font-mono);
  font-size: 0.9rem;
  min-height: 18px;
  text-align: left;
  color: var(--text);
}

.resultado-verificacao {
  margin-top: 24px;
  padding: 18px 22px;
  border-radius: 4px;
  font-family: var(--font-mono);
  font-size: 1rem;
  display: none;
  border-left: 3px solid transparent;
  text-align: left;
}

.resultado-verificacao.show {
  display: block;
}

.resultado-verificacao.safe {
  background: rgba(0, 255, 200, 0.08);
  border-color: var(--accent);
  color: var(--accent);
}

.resultado-verificacao.warn {
  background: rgba(255, 200, 0, 0.08);
  border-color: #ffcc00;
  color: #ffcc00;
}

.resultado-verificacao.danger {
  background: rgba(255, 64, 96, 0.08);
  border-color: var(--danger);
  color: var(--danger);
}

.grupo-botoes {
  margin-top: 20px;
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.grupo-botoes .btn {
  flex: 1;
  min-width: 150px;
}

#senha-gerada {
  display: none;
  margin-top: 18px;
  padding: 14px 18px;
  background: rgba(0, 255, 224, 0.05);
  border: 1px solid rgba(0, 255, 224, 0.15);
  border-radius: 4px;
}

#senha-txt {
  font-family: var(--font-mono);
  font-size: 0.95rem;
  color: var(--accent);
  margin-top: 6px;
  word-break: break-all;
}

.rotulo-senha-gerada {
  display: block;
  font-size: 0.9rem;
  color: var(--text);
  text-transform: uppercase;
  letter-spacing: 1px;
}

footer {
  position: relative;
  z-index: 1;
  background: var(--bg2);
  border-top: 1px solid rgba(0, 255, 224, 0.1);
  padding: 30px 24px;
  text-align: center;
  margin-top: 60px;
}

.footer-logo {
  font-family: var(--font-mono);
  font-size: 1rem;
  color: var(--accent);
  text-shadow: var(--glow);
  margin-bottom: 8px;
}

footer p {
  font-size: 0.95rem;
  color: var(--text);
}

.rodape-info {
  margin-top: 8px;
  font-size: 0.95rem;
}

@media (max-width: 640px) {
  header {
    padding: 0 16px;
  }

  main {
    padding: 72px 16px 48px;
  }

  .caixa-verificacao {
    padding: 24px 16px;
  }

  .linha-entrada {
    flex-direction: column;
  }

  .grupo-botoes {
    flex-direction: column;
  }

  .grupo-botoes .btn {
    min-width: auto;
  }
}