:root {
     --primary-green: #1F7A4B;
     --primary-green-hover: #155a37;
     --light-green: #f0f8f4;
     --border-color: #e9ecef;
     --text-muted: #6c757d;
     --dark-color: #2c3e50;
     --danger-color: #dc3545;
     --success-color: #28a745;
     --warning-color: #ffc107;
     --info-color: #17a2b8;
 }

 body {
     background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
     min-height: 100vh;
     font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
 }

 .header-container {
     background: linear-gradient(135deg, var(--primary-green) 0%, var(--primary-green-hover) 100%);
     color: white;
     padding: 1.5rem 0;
     margin-bottom: 2rem;
     box-shadow: 0 2px 10px rgba(31, 122, 75, 0.1);
 }

 .back-btn {
     background: rgba(255, 255, 255, 0.2);
     border: 1px solid rgba(255, 255, 255, 0.3);
     color: white;
     padding: 0.5rem 0.75rem;
     border-radius: 8px;
     text-decoration: none;
     transition: all 0.3s ease;
     display: inline-flex;
     align-items: center;
     gap: 0.5rem;
 }

 .back-btn:hover {
     background: rgba(255, 255, 255, 0.3);
     color: white;
     transform: translateX(-2px);
     text-decoration: none;
 }

 .page-title {
     color: white;
     font-weight: 700;
     margin: 0;
     display: flex;
     align-items: center;
     gap: 15px;
 }

 .main-container {
     background: white;
     border-radius: 20px;
     box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
     padding: 40px;
     margin: 20px auto;
     max-width: 900px;
 }

 .page-header {
     border-bottom: 3px solid var(--primary-green);
     margin-bottom: 40px;
     padding-bottom: 20px;
 }

 .section-title {
     color: var(--primary-green);
     font-weight: 600;
     margin-bottom: 20px;
     display: flex;
     align-items: center;
     gap: 10px;
     font-size: 1.5rem;
 }

 .form-section {
     margin-bottom: 40px;
     animation: fadeInUp 0.6s ease-out;
 }

 .form-label {
     font-weight: 600;
     color: var(--dark-color);
     margin-bottom: 8px;
     display: flex;
     align-items: center;
     gap: 8px;
 }

 .form-control,
 .form-select {
     border: 2px solid #e9ecef;
     border-radius: 12px;
     padding: 12px 16px;
     font-size: 1rem;
     transition: all 0.3s ease;
     background: #f8f9fa;
 }

 .form-control:focus,
 .form-select:focus {
     border-color: var(--primary-green);
     box-shadow: 0 0 0 0.2rem rgba(31, 122, 75, 0.25);
     background: white;
 }

 .form-control:hover,
 .form-select:hover {
     border-color: var(--primary-green);
     background: white;
 }

 .input-group-text {
     background: var(--light-green);
     border: 2px solid #e9ecef;
     color: var(--primary-green);
     border-radius: 12px 0 0 12px;
 }

 .input-group .form-control {
     border-left: none;
     border-radius: 0 12px 12px 0;
 }

 .input-group:focus-within .input-group-text {
     border-color: var(--primary-green);
     background: white;
 }

 .btn-primary {
     background: var(--primary-green);
     border-color: var(--primary-green);
     padding: 0.75rem 2rem;
     font-weight: 500;
     border-radius: 8px;
     transition: all 0.3s ease;
     box-shadow: 0 2px 8px rgba(31, 122, 75, 0.2);
 }

 .btn-primary:hover {
     background: var(--primary-green-hover);
     border-color: var(--primary-green-hover);
     transform: translateY(-1px);
     box-shadow: 0 4px 12px rgba(31, 122, 75, 0.3);
 }

 .btn-outline-secondary {
     border: 2px solid var(--border-color);
     color: var(--text-muted);
     padding: 0.75rem 1.5rem;
     border-radius: 8px;
     transition: all 0.3s ease;
 }

 .btn-outline-secondary:hover {
     background: var(--border-color);
     border-color: var(--text-muted);
     color: var(--dark-color);
     transform: translateY(-1px);
 }

 .security-card {
     background: white;
     border-radius: 15px;
     box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
     overflow: hidden;
     border: none;
 }

 .security-card-header {
     background: linear-gradient(135deg, var(--primary-green) 0%, var(--primary-green-hover) 100%);
     color: white;
     padding: 1.5rem;
     border: none;
 }

 .security-card-body {
     padding: 2rem;
 }

 .alert-custom {
     background: linear-gradient(135deg, #e3f2fd 0%, #bbdefb 100%);
     border: 1px solid var(--info-color);
     border-radius: 12px;
     padding: 1rem;
     margin-bottom: 1.5rem;
 }

 .password-strength {
     margin-top: 0.5rem;
 }

 .strength-indicator {
     height: 4px;
     border-radius: 2px;
     transition: all 0.3s ease;
     margin-top: 0.5rem;
 }

 .strength-weak {
     background: var(--danger-color);
     width: 33%;
 }

 .strength-medium {
     background: var(--warning-color);
     width: 66%;
 }

 .strength-strong {
     background: var(--success-color);
     width: 100%;
 }

 .password-match-success {
     color: var(--success-color);
 }

 .password-match-error {
     color: var(--danger-color);
 }

 .toggle-password-btn {
     border: 2px solid #e9ecef;
     border-left: none;
     border-radius: 0 12px 12px 0;
     background: var(--light-green);
     color: var(--primary-green);
     transition: all 0.3s ease;
 }

 .toggle-password-btn:hover {
     background: var(--primary-green);
     color: white;
 }

 .form-text {
     color: var(--text-muted);
     font-size: 0.875rem;
     margin-top: 0.25rem;
 }

 .required-asterisk {
     color: var(--danger-color);
 }

 .section-divider {
     height: 2px;
     background: linear-gradient(90deg, var(--primary-green) 0%, transparent 100%);
     border: none;
     margin: 30px 0;
 }

 @media (max-width: 768px) {
     .main-container {
         margin: 10px;
         padding: 20px;
         border-radius: 15px;
     }

     .page-title {
         font-size: 1.5rem;
     }

     .security-card-body {
         padding: 1.5rem;
     }

     .btn-group-mobile {
         display: flex;
         flex-direction: column;
         gap: 0.5rem;
     }

     .btn-group-mobile .btn {
         width: 100%;
     }
 }

 @keyframes fadeInUp {
     from {
         opacity: 0;
         transform: translateY(30px);
     }

     to {
         opacity: 1;
         transform: translateY(0);
     }
 }

 .input-icon {
     color: var(--primary-green);
 }