#register {
  background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
  min-height: calc(100vh - 200px);
  position: relative;
  overflow: hidden;
}

#register::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: url('../img/hero-bg.jpg') center center;
  background-size: cover;
  opacity: 0.05;
  z-index: 1;
}

#register .container {
  position: relative;
  z-index: 2;
}

/* Section Title Enhancement */
#register .section-title h2 {
  color: var(--heading-color);
  font-size: 2.5rem;
  font-weight: 700;
  margin-bottom: 1.5rem;
  position: relative;
}

#register .section-title h2::after {
  content: '';
  position: absolute;
  bottom: -10px;
  left: 50%;
  transform: translateX(-50%);
  width: 60px;
  height: 4px;
  background: linear-gradient(45deg, var(--accent-color), #ff6b8a);
  border-radius: 2px;
}

#register .section-title .lead {
  color: var(--heading-color);
  font-size: 1.1rem;
  line-height: 1.7;
  max-width: 800px;
  margin: 0 auto;
  opacity: 0.9;
}

/* Form Container */
#register form {
  background: var(--surface-color);
  padding: 3rem 2rem;
  border-radius: 20px;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.1);
  border: 1px solid rgba(248, 34, 73, 0.1);
  position: relative;
  overflow: hidden;
  max-width: 900px;
  margin: 0 auto;
}

#register form::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--accent-color), #ff6b8a, var(--accent-color));
  background-size: 200% 100%;
  animation: gradientMove 3s ease-in-out infinite;
}

@keyframes gradientMove {
  0%,
  100% {
    background-position: 0% 50%;
  }
  50% {
    background-position: 100% 50%;
  }
}

/* Form Labels */
.form-label {
  color: var(--heading-color);
  font-weight: 600;
  font-size: 1rem;
  margin-bottom: 0.75rem;
  display: block;
}

.form-label .text-danger {
  color: var(--accent-color) !important;
  font-weight: 700;
}

/* Form Controls */
.form-control,
.form-control-sm {
  border: 2px solid #e9ecef;
  border-radius: 10px;
  padding: 0.875rem 1rem;
  font-size: 0.95rem;
  transition: all 0.3s ease;
  background: var(--surface-color);
  color: var(--heading-color);
}

.form-control:focus,
.form-control-sm:focus {
  border-color: var(--accent-color);
  box-shadow: 0 0 0 0.2rem rgba(248, 34, 73, 0.15);
  outline: none;
  transform: translateY(-1px);
}

.form-control::placeholder,
.form-control-sm::placeholder {
  color: #6c757d;
  opacity: 0.8;
}

/* Radio Button Styling */
.form-check {
  padding: 1rem;
  border: 2px solid #e9ecef;
  border-radius: 12px;
  margin: 0.5rem 0;
  transition: all 0.3s ease;
  cursor: pointer;
  background: var(--surface-color);
  position: relative;
}

.form-check:hover {
  border-color: var(--accent-color);
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(248, 34, 73, 0.15);
}

.form-check-input {
  width: 1.25rem;
  height: 1.25rem;
  margin-top: 0.125rem;
  margin-right: 0.75rem;
  border: 2px solid #dee2e6;
  transition: all 0.3s ease;
}

.form-check-input:checked {
  background-color: var(--accent-color);
  border-color: var(--accent-color);
  box-shadow: 0 0 0 0.2rem rgba(248, 34, 73, 0.25);
}

.form-check-input:focus {
  border-color: var(--accent-color);
  outline: none;
  box-shadow: 0 0 0 0.2rem rgba(248, 34, 73, 0.25);
}

.form-check-label {
  font-weight: 600;
  color: var(--heading-color);
  cursor: pointer;
  font-size: 1rem;
}

.form-check:has(.form-check-input:checked) {
  border-color: var(--accent-color);
  background: linear-gradient(135deg, rgba(248, 34, 73, 0.05), rgba(248, 34, 73, 0.02));
}

/* Sport Selection Row */
.row:has(.form-check) .col-md-6 {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

.row:has(.form-check) .form-check {
  flex: 1;
  min-width: 150px;
  text-align: center;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* Player Input Section - Kapitän Bereich */
.player-section {
  background: linear-gradient(135deg, #f8f9fa 0%, #ffffff 100%);
  padding: 2rem;
  border-radius: 15px;
  border: 2px solid #e9ecef;
  transition: all 0.3s ease;
  margin-bottom: 1.5rem;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05);
}

.player-section:hover {
  border-color: var(--accent-color);
  box-shadow: 0 8px 25px rgba(248, 34, 73, 0.1);
  transform: translateY(-2px);
}

/* Kapitän Label Styling */
.player-section .form-label {
  font-size: 1.1rem;
  color: var(--heading-color);
  margin-bottom: 1rem;
  font-weight: 700;
  position: relative;
}

/* Input Grid für Kapitän */
.player-inputs {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  align-items: start;
}

.player-inputs .input-group {
  display: flex;
  flex-direction: column;
}

.player-inputs .input-group {
  display: flex;
  flex-direction: column;
}

.player-inputs .form-control-sm {
  padding: 0.75rem 1rem;
  font-size: 0.95rem;
  border-radius: 8px;
  height: auto;
}

.player-inputs .input-label {
  font-size: 0.85rem;
  color: var(--heading-color);
  margin-bottom: 0.5rem;
  font-weight: 500;
  opacity: 0.8;
}

/* Submit Button */
.btn-primary {
  background: linear-gradient(45deg, var(--accent-color), #ff6b8a);
  border: none;
  padding: 1rem 3rem;
  font-size: 1.1rem;
  font-weight: 700;
  border-radius: 50px;
  transition: all 0.3s ease;
  box-shadow: 0 8px 25px rgba(248, 34, 73, 0.3);
  color: var(--contrast-color);
  position: relative;
  overflow: hidden;
}

.btn-primary::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 0.5s;
}

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

.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 15px 35px rgba(248, 34, 73, 0.4);
  background: linear-gradient(45deg, #e01e3e, #ff5577);
}

.btn-primary:active {
  transform: translateY(-1px);
  transition: transform 0.1s;
}

/* Validation Styles */
.was-validated .form-control:valid,
.form-control.is-valid {
  border-color: #28a745;
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 8 8'%3e%3cpath fill='%2328a745' d='m2.3 6.73.51-.76L6.15 3.5c.22-.17.22-.42 0-.59L2.81.47c-.22-.17-.59-.17-.8 0-.22.17-.22.42 0 .59L4.99 3 2.01 5.94c-.22.17-.22.42 0 .59z'/%3e%3c/svg%3e");
  background-repeat: no-repeat;
  background-position: right calc(0.375em + 0.1875rem) center;
  background-size: calc(0.75em + 0.375rem) calc(0.75em + 0.375rem);
}

.was-validated .form-control:invalid,
.form-control.is-invalid {
  border-color: var(--accent-color);
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 12 12' width='12' height='12' fill='none' stroke='%23f82249'%3e%3ccircle cx='6' cy='6' r='4.5'/%3e%3cpath d='m5.8 4.6 0.4 0.4 0.4-0.4M5.8 7.4l0.4-0.4 0.4 0.4'/%3e%3c/svg%3e");
  background-repeat: no-repeat;
  background-position: right calc(0.375em + 0.1875rem) center;
  background-size: calc(0.75em + 0.375rem) calc(0.75em + 0.375rem);
}

.invalid-feedback {
  color: var(--accent-color);
  font-size: 0.875rem;
  font-weight: 500;
  margin-top: 0.25rem;
}

.valid-feedback {
  color: #28a745;
  font-size: 0.875rem;
  font-weight: 500;
  margin-top: 0.25rem;
}

/* Responsive Design */
@media (max-width: 992px) {
  .player-inputs {
    grid-template-columns: 1fr;
    gap: 0.75rem;
  }
}

/* Medium screens - 2x2 Grid für bessere Anordnung */
@media (min-width: 768px) and (max-width: 991px) {
  .player-inputs {
    grid-template-columns: 1fr 1fr;
    gap: 0.75rem;
  }
}

@media (max-width: 768px) {
  #register form {
    padding: 2rem 1.5rem;
    margin: 0 1rem;
    max-width: 100%;
  }

  #register .section-title h2 {
    font-size: 2rem;
  }

  .row:has(.form-check) .col-md-6 {
    flex-direction: column;
    gap: 0.75rem;
  }

  .form-check {
    margin: 0.25rem 0;
  }

  .btn-primary {
    padding: 0.875rem 2rem;
    font-size: 1rem;
  }

  .player-section {
    padding: 1.5rem;
  }

  .player-inputs {
    grid-template-columns: 1fr;
    gap: 0.75rem;
  }
}

@media (max-width: 576px) {
  #register form {
    padding: 1.5rem 1rem;
    border-radius: 15px;
  }

  .player-section {
    padding: 1rem;
  }

  .form-control,
  .form-control-sm {
    padding: 0.625rem 0.875rem;
    font-size: 0.9rem;
  }

  .player-section .form-label {
    font-size: 1rem;
  }
}

/* Animation for form appearance */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

#register form {
  animation: fadeInUp 0.6s ease-out;
}

/* Loading state for submit button */
.btn-primary.loading {
  pointer-events: none;
  position: relative;
}

.btn-primary.loading::after {
  content: '';
  position: absolute;
  width: 20px;
  height: 20px;
  top: 50%;
  left: 50%;
  margin-left: -10px;
  margin-top: -10px;
  border: 2px solid transparent;
  border-top-color: #ffffff;
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

@keyframes spin {
  0% {
    transform: rotate(0deg);
  }
  100% {
    transform: rotate(360deg);
  }
}

/* Focus visible improvements */
.form-control:focus-visible,
.form-control-sm:focus-visible,
.form-check-input:focus-visible,
.btn-primary:focus-visible {
  outline: 2px solid var(--accent-color);
  outline-offset: 2px;
}

button .spinner-border {
  vertical-align: middle;
  margin-left: 8px;
}

.modal-title {
  color: white;
}

.gray-text {
  color: #2f3138;
}