* {
   margin: 0;
   padding: 0;
   box-sizing: border-box;
 }

 body {
   font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
   background: linear-gradient(135deg, #0f0f23 0%, #1a1a2e 50%, #16213e 100%);
   min-height: 100vh;
   display: flex;
   align-items: center;
   justify-content: center;
   padding: 20px;
   position: relative;
   overflow-x: hidden;
 }

 body::before {
   content: '';
   position: fixed;
   top: 0;
   left: 0;
   width: 100%;
   height: 100%;
   background:
     radial-gradient(circle at 20% 80%, rgba(99, 102, 241, 0.15) 0%, transparent 50%),
     radial-gradient(circle at 80% 20%, rgba(139, 92, 246, 0.15) 0%, transparent 50%),
     radial-gradient(circle at 40% 40%, rgba(59, 130, 246, 0.1) 0%, transparent 50%);
   z-index: -1;
   animation: backgroundFloat 20s ease-in-out infinite;
 }

 @keyframes backgroundFloat {

   0%,
   100% {
     transform: translateY(0px) rotate(0deg);
   }

   50% {
     transform: translateY(-20px) rotate(1deg);
   }
 }

 .container {
   max-width: 750px;
   width: 100%;
   position: relative;
 }

 .form-container {
   background: rgba(17, 24, 39, 0.95);
   backdrop-filter: blur(20px);
   border-radius: 20px;
   padding: 35px;
   box-shadow:
     0 20px 40px rgba(0, 0, 0, 0.3),
     0 0 0 1px rgba(99, 102, 241, 0.2);
   position: relative;
   overflow: hidden;
   animation: slideInUp 0.8s ease-out;
 }

 .form-container::before {
   content: '';
   position: absolute;
   top: 0;
   left: 0;
   right: 0;
   height: 4px;
   background: linear-gradient(90deg, #20b9dc, #6bc075, #3b82f6);
   animation: shimmer 3s ease-in-out infinite;
 }

 @keyframes slideInUp {
   from {
     opacity: 0;
     transform: translateY(50px);
   }

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

 @keyframes shimmer {

   0%,
   100% {
     transform: translateX(-100%);
   }

   50% {
     transform: translateX(100%);
   }
 }

 .form-title {
   text-align: center;
   margin-bottom: 30px;
   color: #f8fafc;
   font-size: 2.2rem;
   font-weight: 700;
   position: relative;
 }

 .form-title::after {
   content: '';
   position: absolute;
   bottom: -10px;
   left: 50%;
   transform: translateX(-50%);
   width: 80px;
   height: 3px;
   background: linear-gradient(90deg, #20b9dc, #6bc075);
   border-radius: 2px;
 }

 .form-group {
   margin-bottom: 20px;
   animation: fadeInUp 0.6s ease-out forwards;
   opacity: 0;
   transform: translateY(20px);
 }

 .form-group:nth-child(1) {
   animation-delay: 0.1s;
 }

 .form-group:nth-child(2) {
   animation-delay: 0.2s;
 }

 .form-group:nth-child(3) {
   animation-delay: 0.3s;
 }

 .form-group:nth-child(4) {
   animation-delay: 0.4s;
 }

 .form-group:nth-child(5) {
   animation-delay: 0.5s;
 }

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

 .input-container {
   position: relative;
 }

 .input-icon {
   position: absolute;
   left: 12px;
   top: 50%;
   transform: translateY(-50%);
   color: #20b9dc;
   font-size: 1rem;
   z-index: 2;
 }

 label {
   display: block;
   font-weight: 600;
   margin-bottom: 8px;
   color: #e5e7eb;
   font-size: 0.95rem;
   display: flex;
   align-items: center;
   gap: 8px;
 }

 input,
 select {
   width: 100%;
   padding: 12px 18px 12px 42px;
   border: 2px solid #374151;
   border-radius: 10px;
   background: #1f2937;
   color: #f8fafc;
   font-size: 0.95rem;
   transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
   position: relative;
 }

 input:focus,
 select:focus {
   outline: none;
   border-color: #6bc075;
   background: #111827;
   box-shadow: 0 0 0 4px rgba(99, 102, 241, 0.2);
   transform: translateY(-2px);
 }

 input::placeholder {
   color: #9ca3af;
 }

 select option {
   background: #1f2937;
   color: #f8fafc;
 }

 .error-message {
   font-size: 0.8rem;
   color: #ef4444;
   margin-top: 5px;
   display: block;
   font-weight: 500;
 }

 .input-error {
   border-color: #ef4444 !important;
   background: #1f1214 !important;
   box-shadow: 0 0 0 4px rgba(239, 68, 68, 0.2) !important;
 }

 .section-title {
   font-size: 1.1rem;
   font-weight: 700;
   color: #f8fafc;
   margin-bottom: 15px;
   text-align: left;
   display: flex;
   align-items: center;
   gap: 8px;
 }

 .course-cards {
   display: grid;
   grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
   gap: 15px;
   margin-bottom: 15px;
 }

 .course-card {
   background: linear-gradient(135deg, #1f2937 0%, #111827 100%);
   padding: 20px;
   border-radius: 14px;
   cursor: pointer;
   text-align: center;
   border: 2px solid #374151;
   transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
   position: relative;
   overflow: hidden;
 }

 .course-card::before {
   content: '';
   position: absolute;
   top: 0;
   left: -100%;
   width: 100%;
   height: 100%;
   background: linear-gradient(90deg, transparent, rgba(99, 102, 241, 0.15), transparent);
   transition: left 0.6s;
 }

 .course-card:hover {
   transform: translateY(-5px);
   border-color: #20b9dc;
   box-shadow: 0 20px 40px rgba(99, 102, 241, 0.3);
 }

 .course-card:hover::before {
   left: 100%;
 }

 .course-card.selected {
   border-color: #008673;
   background: linear-gradient(135deg, #20dcbabb 0%, #006859 100%);
   box-shadow: 0 15px 35px rgba(99, 102, 241, 0.4);
   transform: translateY(-5px);
 }

 .course-card h3 {
   color: #f8fafc;
   font-size: 1.2rem;
   font-weight: 700;
   margin-bottom: 12px;
   text-align: left;
 }

 .course-card p {
   color: #d1d5db;
   font-size: 0.85rem;
   margin-bottom: 4px;
   text-align: left;
 }

 .button-group {
   display: flex;
   gap: 12px;
   flex-wrap: wrap;
   margin-bottom: 10px;
 }

 .choice-btn,
 .category-btn {
   padding: 10px 20px;
   border-radius: 22px;
   background: #1f2937;
   border: 2px solid #374151;
   color: #e5e7eb;
   cursor: pointer;
   font-weight: 600;
   font-size: 0.9rem;
   transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
   display: flex;
   align-items: center;
   gap: 6px;
 }

 .choice-btn:hover,
 .category-btn:hover {
   transform: translateY(-2px);
   border-color: #6bc075;
   background: #111827;
   box-shadow: 0 8px 25px rgba(99, 102, 241, 0.3);
 }

 .choice-btn.active,
 .category-btn.active {
   background: linear-gradient(135deg, #20b9dc, #6bc075);
   border-color: #006859;
   color: white;
   box-shadow: 0 8px 25px rgba(99, 102, 241, 0.4);
 }

 .submit-btn {
   width: 100%;
   padding: 14px;
   border: none;
   background: linear-gradient(135deg, #20b9dc, #6bc075);
   color: white;
   border-radius: 10px;
   font-weight: 700;
   font-size: 1rem;
   cursor: pointer;
   transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
   position: relative;
   overflow: hidden;
 }

 .submit-btn::before {
   content: '';
   position: absolute;
   top: 0;
   left: -100%;
   width: 100%;
   height: 100%;
   background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
   transition: left 0.6s;
 }

 .submit-btn:hover {
   transform: translateY(-3px);
   background: linear-gradient(135deg, #137f45ba, #20b9dc);
   box-shadow: 0 15px 35px rgba(99, 102, 241, 0.5);
 }

 .submit-btn:hover::before {
   left: 100%;
 }

 .submit-btn.loading {
   opacity: 0.8;
   pointer-events: none;
   transform: scale(0.98);
 }

 .dynamic-fields {
   margin-top: 15px;
   opacity: 0;
   animation: slideInDown 0.5s ease-out forwards;
 }

 @keyframes slideInDown {
   from {
     opacity: 0;
     transform: translateY(-20px);
   }

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

 .dynamic-field-group {
   display: grid;
   grid-template-columns: 1fr;
   gap: 15px;
 }

 .form-rows{
  display: grid;
   grid-template-columns: auto auto auto;
   gap: 15px;
 }

.form-row{
 display: grid;
   grid-template-columns: auto auto;
   gap: 15px;
}
 .dynamic-field-group.three-columns {
    display: flex;
    gap: 15px;
}


.dynamic-field-group.three-columns .form-group,
.dynamic-field-group.two-columns .form-group {
    flex: 1;
}

.dynamic-field-group.two-columns {
    display: flex;
    gap: 15px;
}

 .form-row {
   margin-bottom: 20px;
 }

 #categorySection {
   opacity: 0;
   max-height: 0;
   overflow: hidden;
   transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
   transform: translateY(-10px);
 }

 #categorySection.show {
   opacity: 1;
   max-height: 200px;
   transform: translateY(0);
 }

  .dynamic-fields {
            opacity: 0;
            max-height: 0;
            overflow: hidden;
            transition: all 0.5s ease;
        }

        .dynamic-fields.show {
            opacity: 1;
            max-height: 500px;
        }

        .dynamic-field-group {
            margin-top: 20px;
        }

        .form-row-three {
            display: grid;
            grid-template-columns: 1fr 1fr 1fr;
            gap: 15px;
        }

        @media (max-width: 768px) {
            .form-row, .form-row-three {
                grid-template-columns: 1fr;
            }

            .button-group {
                flex-direction: column;
            }

            .choice-btn, .category-btn {
                min-width: auto;
            }

            .course-cards {
                grid-template-columns: 1fr;
            }
        }

 /* Responsive Design */
 @media (max-width: 768px) {
   .form-container {
     padding: 25px 18px;
   }

   .form-title {
     font-size: 1.9rem;
   }

   .form-row,
   .dynamic-field-group {
     grid-template-columns: 1fr;
     gap: 12px;
   }

   .course-cards {
     grid-template-columns: 1fr;
   }

   .button-group {
     justify-content: center;
   }

   input,
   select {
     padding: 11px 14px 11px 38px;
   }
 }

 @media (max-width: 480px) {
   .container {
     padding: 8px;
   }

   .form-container {
     padding: 20px 12px;
   }

   .form-title {
     font-size: 1.7rem;
   }
 }

 /* Loading animation */
 @keyframes pulse {

   0%,
   100% {
     opacity: 1;
   }

   50% {
     opacity: 0.5;
   }
 }

 .loading {
   animation: pulse 1.5s ease-in-out infinite;
 }

 /* Success animation */
 @keyframes bounceIn {
   0% {
     opacity: 0;
     transform: scale(0.3) translateY(-50px);
   }

   50% {
     opacity: 1;
     transform: scale(1.05) translateY(0);
   }

   70% {
     transform: scale(0.9);
   }

   100% {
     opacity: 1;
     transform: scale(1);
   }
 }