:root {
  --sg-accent: #0b7a78;
  --sg-accent-dark: #075e5c;
  --sg-secondary: #7cb342;
  --sg-bg: #f7faf8;
  --sg-surface: #ffffff;
  --sg-text: #111827;
  --sg-muted: #4b5563;
  --sg-line: #dbe7e4;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
  background:
    radial-gradient(circle at 15% 20%, rgba(124, 179, 66, 0.12), transparent 40%),
    radial-gradient(circle at 85% 85%, rgba(11, 122, 120, 0.12), transparent 42%),
    var(--sg-bg);
  color: var(--sg-text);
}

.sg-header {
  background: rgba(255, 255, 255, 0.9);
  border-top: 5px solid var(--sg-accent);
  border-bottom: 1px solid var(--sg-line);
  backdrop-filter: blur(3px);
}

.btn-sgado-access {
  background-color: var(--sg-accent);
  border-color: var(--sg-accent);
  color: #ffffff;
  font-weight: 700;
  border-radius: 10px;
  padding: 0.7rem 1.2rem;
  box-shadow: 0 10px 24px rgba(11, 122, 120, 0.2);
}

.btn-sgado-access:hover,
.btn-sgado-access:focus {
  background-color: var(--sg-accent-dark);
  border-color: var(--sg-accent-dark);
  color: #ffffff;
}

.sg-main {
  min-height: calc(100vh - 90px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2rem 1rem;
}

.sg-dev-box {
  max-width: 680px;
  background: var(--sg-surface);
  border: 1px solid var(--sg-line);
  border-radius: 18px;
  padding: 3rem 2rem;
  box-shadow: 0 20px 50px rgba(7, 94, 92, 0.08);
}

.sg-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
  padding: 0.35rem 0.9rem;
  background: rgba(124, 179, 66, 0.16);
  color: #315a12;
  font-weight: 700;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  font-size: 0.78rem;
}

h1 {
  color: var(--sg-accent-dark);
  font-weight: 800;
}

p {
  color: var(--sg-muted);
  font-size: 1.06rem;
}

@media (max-width: 576px) {
  .btn-sgado-access {
    width: 100%;
  }

  .sg-header .d-flex {
    width: 100%;
  }

  .sg-dev-box {
    padding: 2.2rem 1.2rem;
  }
}