* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

body {
  background: radial-gradient(circle at top, #1b1c3a, #020313 60%);
  color: #fff;
  min-height: 100vh;
}

.topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 2rem;
  background: rgba(5, 6, 24, 0.9);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(255,255,255,0.06);
}

.logo {
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.topbar nav a {
  margin-left: 1rem;
  color: #e2e2ff;
  text-decoration: none;
  font-size: 0.9rem;
}

.topbar nav a:hover {
  color: #fff;
}

.auth-main {
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 3rem 1rem;
}

.auth-card {
  width: 100%;
  max-width: 420px;
  background: rgba(10, 13, 44, 0.9);
  border-radius: 18px;
  padding: 2.5rem 2rem;
  box-shadow: 0 20px 45px rgba(0,0,0,0.6);
  border: 1px solid rgba(255,255,255,0.06);
}

.auth-title {
  font-size: 1.6rem;
  margin-bottom: 0.35rem;
}

.auth-subtitle {
  font-size: 0.9rem;
  color: #b5b7ff;
  margin-bottom: 1.5rem;
}

.form-group {
  margin-bottom: 1rem;
}

label {
  display: block;
  font-size: 0.85rem;
  margin-bottom: 0.35rem;
  color: #cacbff;
}

input[type="text"],
input[type="email"],
input[type="password"] {
  width: 100%;
  padding: 0.7rem 0.85rem;
  border-radius: 10px;
  border: 1px solid rgba(255,255,255,0.15);
  background: rgba(3, 5, 30, 0.9);
  color: #fff;
  font-size: 0.9rem;
}

input:focus {
  outline: none;
  border-color: #7f5dff;
  box-shadow: 0 0 0 1px rgba(127,93,255,0.5);
}

.btn-primary {
  width: 100%;
  padding: 0.8rem 1rem;
  border-radius: 999px;
  border: none;
  background: linear-gradient(135deg, #7f5dff, #ff66c4);
  color: #fff;
  font-weight: 600;
  cursor: pointer;
  margin-top: 0.5rem;
}

.btn-primary:hover {
  opacity: 0.92;
}

.auth-meta {
  margin-top: 1rem;
  font-size: 0.85rem;
  color: #b5b7ff;
  text-align: center;
}

.auth-meta a {
  color: #ff89ff;
  text-decoration: none;
}

.error-msg {
  background: rgba(255, 76, 76, 0.12);
  border: 1px solid rgba(255, 76, 76, 0.5);
  color: #ffb3b3;
  padding: 0.6rem 0.75rem;
  border-radius: 10px;
  font-size: 0.85rem;
  margin-bottom: 0.7rem;
}

.success-msg {
  background: rgba(76, 255, 153, 0.12);
  border: 1px solid rgba(76, 255, 153, 0.5);
  color: #c9ffd8;
  padding: 0.6rem 0.75rem;
  border-radius: 10px;
  font-size: 0.85rem;
  margin-bottom: 0.7rem;
}

.footer {
  text-align: center;
  padding: 1rem 0;
  font-size: 0.75rem;
  color: #9092ff;
}