/* Card Container */
.auth-card {
  max-width: 420px;
  margin: 40px auto;
  padding: 32px 28px;
  background: #ffffff;
  border-radius: 16px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
}

.brand-header {
  text-align: center;
  margin-bottom: 24px;
}

.brand-logo {
  width: 48px;
  height: 48px;
  object-fit: contain;
  margin-bottom: 8px;
}

.brand-title {
  font-size: 22px;
  font-weight: 700;
  color: #1a1a1a;
  letter-spacing: 0.5px;
  margin: 0;
}

/* Auth Tabs Header */
.auth-tabs {
  display: flex;
  background: #f3f4f6;
  border-radius: 10px;
  padding: 4px;
  margin-bottom: 24px;
}

.tab-btn {
  flex: 1;
  padding: 10px 16px;
  font-size: 14px;
  font-weight: 600;
  border: none;
  background: transparent;
  color: #6b7280;
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.2s ease;
}

.tab-btn.active {
  background: #ffffff;
  color: #059669;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.06);
}

/* Form Fields */
.form-group {
  margin-bottom: 18px;
  text-align: left;
}

.form-group label {
  display: block;
  font-size: 11px;
  font-weight: 700;
  color: #6b7280;
  letter-spacing: 0.8px;
  margin-bottom: 6px;
}

.form-group input {
  width: 100%;
  padding: 12px 14px;
  font-size: 14px;
  border: 1px solid #e5e7eb;
  background-color: #f9fafb;
  border-radius: 8px;
  box-sizing: border-box;
  transition: border-color 0.2s;
}

.form-group input:focus {
  outline: none;
  border-color: #059669;
  background-color: #ffffff;
}

.btn-primary {
  width: 100%;
  padding: 12px;
  font-size: 15px;
  font-weight: 600;
  color: #ffffff;
  background-color: #059669;
  border: none;
  border-radius: 8px;
  cursor: pointer;
  margin-top: 8px;
  transition: background-color 0.2s;
}

.btn-primary:hover {
  background-color: #047857;
}

/* Toggle Visibility */
.auth-form.hidden-form {
  display: none;
}

.auth-form.active-form {
  display: block;
  animation: fadeIn 0.25s ease-in-out;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(4px); }
  to { opacity: 1; transform: translateY(0); }
}