* { box-sizing: border-box; }

body {
  margin: 0;
  min-height: 100vh;
  background:
    radial-gradient(circle at top, #003333 0%, #000f0f 35%, #020607 100%);
  color: white;
  font-family: Arial, sans-serif;
}

.topbar {
  width: 100%;
  padding: 18px 32px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: rgba(0, 15, 15, 0.82);
  border-bottom: 1px solid rgba(0,255,204,0.18);
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(10px);
}

.brand {
  color: #00ffcc;
  font-weight: 900;
  letter-spacing: 3px;
}

.navlinks {
  display: flex;
  gap: 22px;
}

.navlinks a, .loginBtn {
  color: #dff;
  text-decoration: none;
  font-weight: 600;
}

.navlinks a:hover, .loginBtn:hover {
  color: #00ffcc;
}

.loginBtn {
  border: 1px solid #00ffcc77;
  padding: 9px 16px;
  border-radius: 10px;
}

.app {
  min-height: calc(100vh - 76px);
  padding: 50px 20px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 35px;
}

.hero {
  text-align: center;
  max-width: 850px;
}

.badge {
  display: inline-block;
  color: #00ffcc;
  border: 1px solid #00ffcc77;
  padding: 8px 16px;
  border-radius: 999px;
  letter-spacing: 3px;
  margin-bottom: 22px;
}

h1 {
  font-size: clamp(34px, 7vw, 72px);
  margin: 0;
}

h2 {
  font-size: clamp(28px, 6vw, 60px);
  color: #00ffcc;
  margin: 8px 0 15px;
}

p {
  color: #c7d6d6;
  font-size: 20px;
}

.actions {
  margin-top: 30px;
  display: flex;
  gap: 14px;
  justify-content: center;
  flex-wrap: wrap;
}

.btn {
  text-decoration: none;
  padding: 15px 26px;
  border-radius: 12px;
  font-weight: bold;
}

.primary {
  background: #00ffcc;
  color: #001111;
}

.secondary {
  border: 1px solid #00ffcc88;
  color: #00ffcc;
}

.grid {
  width: min(1000px, 100%);
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(190px, 1fr));
  gap: 16px;
}

.card {
  background: rgba(0, 255, 204, 0.08);
  border: 1px solid rgba(0, 255, 204, 0.22);
  border-radius: 18px;
  padding: 28px;
  text-align: center;
  font-size: 20px;
  box-shadow: 0 0 30px rgba(0,255,204,0.08);
  color: white;
  text-decoration: none;
}

.card:hover {
  border-color: #00ffcc;
  transform: translateY(-2px);
}

.page {
  padding: 60px 24px;
  max-width: 1100px;
  margin: auto;
}

.panel {
  background: rgba(0,255,204,0.07);
  border: 1px solid rgba(0,255,204,0.22);
  border-radius: 20px;
  padding: 28px;
  margin-top: 20px;
}

.input, textarea {
  width: 100%;
  padding: 15px;
  border-radius: 12px;
  border: 1px solid #00ffcc55;
  background: #031818;
  color: white;
  margin-bottom: 14px;
}

@media (max-width: 760px) {
  .topbar {
    flex-direction: column;
    gap: 12px;
  }

  .navlinks {
    flex-wrap: wrap;
    justify-content: center;
  }
}