:root {
  --bg: #0b1020;
  --card: #121832;
  --text: #e6e8f0;
  --muted: #98a2b3;
  --accent: #5b8cff;
  --accent-hover: #4a79e0;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
}

.topbar {
  background: #0c1428;
  border-bottom: 1px solid #1c2440;
  padding: 12px 16px;
  display: flex;
  align-items: center;
  gap: 16px;
}
.topbar h1 { margin: 0; font-size: 20px; }
.topbar nav { display: flex; gap: 12px; align-items: center; }
.topbar a, .linklike {
  color: var(--text);
  text-decoration: none;
  padding: 6px 10px;
  border-radius: 6px;
}
.topbar a:hover, .linklike:hover { background: #152046; }

.container {
  max-width: 900px;
  margin: 24px auto;
  padding: 0 16px;
}

.card {
  background: var(--card);
  border: 1px solid #1c2440;
  border-radius: 12px;
  padding: 16px;
  margin-bottom: 16px;
}

h2 { margin-top: 0; }

form {
  display: grid;
  gap: 12px;
  max-width: 420px;
}
label {
  display: grid;
  gap: 6px;
}
input {
  padding: 10px 12px;
  background: #0c1428;
  border: 1px solid #1c2440;
  color: var(--text);
  border-radius: 8px;
}
input:focus {
  outline: none;
  border-color: var(--accent);
}

.btn {
  background: var(--accent);
  color: white;
  border: none;
  padding: 10px 14px;
  border-radius: 8px;
  cursor: pointer;
  font-weight: 600;
}
.btn:hover { background: var(--accent-hover); }

.muted { color: var(--muted); }
.hidden { display: none; }

.container {
  max-width: 900px;
  margin: 0 auto;
  padding: 16px;
}

input, button {
  width: 100%;
  box-sizing: border-box;
}
@media (max-width: 600px) {
  .topbar nav {
    flex-direction: row;
    align-items: flex-start;
  }
  .card {
    padding: 12px;
  }
.footer {
  text-align: center;
  margin-top: 20px;
  padding: 15px;
}

.signup-link {
  display: inline-block;
  background: #28a745;   /* green background */
  color: #fff;           /* white text */
  padding: 8px 14px;
  border-radius: 6px;
  text-decoration: none; /* remove underline */
  font-weight: bold;
  transition: background 0.3s ease;
}
.signup-link:hover {
  background: #218838;   /* darker green on hover */
}