.admin-container {
  max-width: 600px;
  margin: 0 auto;
  padding: 2rem;
  width: 100%;
}
.admin-card {
  background: rgba(255, 255, 255, 0.4);
  border: 1px solid var(--border-color);
  border-radius: 20px;
  padding: 2.5rem;
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.03);
}
[data-theme="dark"] .admin-card {
  background: rgba(5, 5, 5, 0.6);
}
.admin-header {
  text-align: center;
  margin-bottom: 2rem;
}
.admin-header h1 {
  font-size: 2rem;
  font-weight: 800;
  letter-spacing: -0.5px;
  margin-bottom: 0.5rem;
}
.admin-header p {
  color: var(--text-muted);
  font-size: 0.95rem;
}
.form-group {
  margin-bottom: 1.5rem;
}
.form-group label {
  display: block;
  font-size: 0.9rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
  color: var(--text-main);
}
.form-control {
  width: 100%;
  padding: 0.75rem 1rem;
  border-radius: 10px;
  border: 1px solid var(--border-color);
  background: rgba(255, 255, 255, 0.5);
  color: var(--text-main);
  font-size: 0.95rem;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}
[data-theme="dark"] .form-control {
  background: rgba(15, 15, 15, 0.5);
}
.form-control:focus {
  outline: none;
  border-color: var(--accent-color);
  box-shadow: 0 0 0 3px rgba(180, 83, 9, 0.15);
}
.form-control::placeholder {
  color: var(--text-muted);
  opacity: 0.6;
}
.btn-block {
  width: 100%;
  text-align: center;
  border: none;
  cursor: pointer;
  background-color: var(--text-main);
  color: var(--bg-body);
  margin-top: 1rem;
}
.alert {
  padding: 0.75rem 1rem;
  border-radius: 10px;
  font-size: 0.9rem;
  margin-bottom: 1.5rem;
  font-weight: 500;
  text-align: center;
}
.alert-danger {
  background-color: rgba(239, 68, 68, 0.15);
  color: #ef4444;
  border: 1px solid rgba(239, 68, 68, 0.2);
}