/* Reset */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

/* Page background (same as login) */
.login-body {
  min-height: 100vh;
  background: linear-gradient(135deg, #0f2027, #203a43, #2c5364);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 60px 20px;
}

/* Main card */
.interest-container {
  width: 100%;
  max-width: 800px;
  background: rgba(255, 255, 255, 0.95);
  border-radius: 16px;

  padding: 35px 30px;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.25);
  animation: fadeInUp 0.6s ease;
}

/* Header */
.interest-header {
  text-align: center;
  margin-bottom: 25px;
  padding-bottom: 20px;
  border-bottom: 1px solid #e7e7e7;
}

.interest-header h1 {
  font-size: 24px;
  font-weight: 800;
  color: #203a43;
  margin-bottom: 8px;
}

.interest-header p {
  font-size: 14px;
  color: #666;
  line-height: 1.6;
}

/* Form groups */
.form-group {
  margin-bottom: 18px;
}

.form-group label {
  display: block;
  margin-bottom: 6px;
  font-size: 14px;
  font-weight: 600;
  color: #444;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 13px 14px;
  border-radius: 10px;
  border: 1px solid #ddd;
  font-size: 15px;
  background-color: #fafafa;
  transition: all 0.3s ease;
}

.form-group textarea {
  resize: vertical;
  min-height: 110px;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: #2c5364;
  background-color: #fff;
  box-shadow: 0 0 0 3px rgba(44, 83, 100, 0.15);
}

/* Required */
.required::after {
  content: " *";
  color: #e74c3c;
  font-weight: 800;
}

/* Button */
.btn-submit {
  width: 100%;
  padding: 14px;
  margin-top: 10px;
  border: none;
  border-radius: 12px;
  background: linear-gradient(135deg, #203a43, #2c5364);
  color: #fff;
  font-size: 16px;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.3s ease;
}

.btn-submit:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 20px rgba(32, 58, 67, 0.4);
}

.btn-submit:active {
  transform: translateY(0);
}

.btn-submit:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  box-shadow: none;
  transform: none;
}

/* Messages */
.message {
  padding: 12px 14px;
  border-radius: 10px;
  margin-bottom: 18px;
  font-size: 14px;
  display: none;
  border: 1px solid transparent;
}

.message.success {
  background: rgba(212, 237, 218, 0.95);
  color: #155724;
  border-color: #c3e6cb;
}

.message.error {
  background: rgba(248, 215, 218, 0.95);
  color: #721c24;
  border-color: #f5c6cb;
}

/* Back link */
.back-link {
  text-align: center;
  margin-top: 20px;
  padding-top: 18px;
  border-top: 1px solid #e7e7e7;
}

.back-link a {
  font-size: 14px;
  font-weight: 600;
  color: #2c5364;
  text-decoration: none;
  transition: all 0.2s ease;
}

.back-link a:hover {
  text-decoration: underline;
  color: #203a43;
}

/* Animations */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(25px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Responsive */
@media (max-width: 480px) {
  .interest-container {
    padding: 30px 20px;
  }

  .interest-header h1 {
    font-size: 22px;
  }
}