/* ===================================
   Component-Specific Styles
   =================================== */

/* ===================================
   Button Components
   =================================== */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  font-size: var(--font-size-base);
  font-weight: 500;
  text-decoration: none;
  border: 2px solid transparent;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
  white-space: nowrap;
  user-select: none;
}

.btn:focus {
  outline: none;
  box-shadow: 0 0 0 3px rgba(27, 55, 132, 0.25);
}

.btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  pointer-events: none;
}

/* Button Variants */
.btn-primary {
  background: var(--primary-gradient);
  color: var(--white);
  border-color: var(--primary-color);
}

.btn-primary:hover {
  background: var(--primary-color);
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.btn-secondary {
  background: transparent;
  color: var(--primary-color);
  border-color: var(--primary-color);
}

.btn-secondary:hover {
  background: var(--primary-color);
  color: var(--white);
}

.btn-accent {
  background: var(--accent-color);
  color: var(--white);
  border-color: var(--accent-color);
}

.btn-accent:hover {
  background: transparent;
  color: var(--accent-color);
}

.btn-outline {
  background: transparent;
  color: var(--primary-color);
  border-color: var(--primary-color);
}

.btn-outline:hover {
  background: var(--primary-color);
  color: var(--white);
}

/* Button Sizes */
.btn-sm {
  padding: 0.5rem 1rem;
  font-size: var(--font-size-sm);
}

.btn-lg {
  padding: 1rem 2rem;
  font-size: var(--font-size-lg);
}

.btn-xl {
  padding: 1.25rem 2.5rem;
  font-size: var(--font-size-xl);
}

/* ===================================
   Form Components
   =================================== */

.form-group {
  margin-bottom: 1.5rem;
  position: relative;
}

.form-label {
  display: block;
  margin-bottom: 0.5rem;
  color: var(--gray-700);
  font-weight: 500;
  font-size: var(--font-size-sm);
}

.form-control {
  width: 100%;
  padding: 0.875rem 1rem;
  border: 2px solid var(--gray-300);
  border-radius: var(--radius-md);
  font-size: var(--font-size-base);
  font-family: inherit;
  transition: all var(--transition-base);
  background-color: var(--white);
  color: var(--gray-800);
}

.form-control:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(27, 55, 132, 0.1);
}

.form-control::placeholder {
  color: var(--gray-500);
  opacity: 1;
}

.form-control:invalid {
  border-color: var(--danger-color);
}

.form-control:valid {
  border-color: var(--success-color);
}

/* Floating Labels */
.form-floating {
  position: relative;
}

.form-floating .form-control {
  padding-top: 1.625rem;
  padding-bottom: 0.625rem;
}

.form-floating label {
  position: absolute;
  top: 0;
  left: 0;
  height: 100%;
  padding: 1rem;
  pointer-events: none;
  border: 1px solid transparent;
  transform-origin: 0 0;
  transition: opacity 0.1s ease-in-out, transform 0.1s ease-in-out;
  color: var(--gray-500);
}

.form-floating .form-control:focus ~ label,
.form-floating .form-control:not(:placeholder-shown) ~ label {
  opacity: 0.65;
  transform: scale(0.85) translateY(-0.5rem) translateX(0.15rem);
}

/* Form Validation States */
.is-valid {
  border-color: var(--success-color);
  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 6.73.94-.94 1.88-1.88L5.3 3.33 4.24 4.39l-.94.94z'/%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);
}

.is-invalid {
  border-color: var(--danger-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='%23dc3545'%3e%3ccircle cx='6' cy='6' r='4.5'/%3e%3cpath d='m5.8 4.6 1.4 1.4 1.4-1.4'/%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);
}

.valid-feedback {
  display: none;
  width: 100%;
  margin-top: 0.25rem;
  font-size: var(--font-size-sm);
  color: var(--success-color);
}

.invalid-feedback {
  display: none;
  width: 100%;
  margin-top: 0.25rem;
  font-size: var(--font-size-sm);
  color: var(--danger-color);
}

.is-valid ~ .valid-feedback,
.is-invalid ~ .invalid-feedback {
  display: block;
}

/* Checkbox and Radio */
.form-check {
  display: flex;
  align-items: flex-start;
  gap: 0.5rem;
  margin-bottom: 0.5rem;
}

.form-check-input {
  margin-top: 0.25rem;
  flex-shrink: 0;
  width: 1rem;
  height: 1rem;
  border: 2px solid var(--gray-400);
  border-radius: var(--radius-sm);
  background-color: var(--white);
  transition: all var(--transition-base);
}

.form-check-input:checked {
  background-color: var(--primary-color);
  border-color: var(--primary-color);
}

.form-check-input:focus {
  outline: none;
  box-shadow: 0 0 0 3px rgba(27, 55, 132, 0.25);
}

.form-check-label {
  font-size: var(--font-size-sm);
  color: var(--gray-700);
  line-height: 1.4;
  cursor: pointer;
}

/* ===================================
   Card Components
   =================================== */

.card {
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  transition: all var(--transition-base);
}

.card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.card-header {
  padding: 1.5rem;
  border-bottom: 1px solid var(--gray-200);
  background: var(--gray-50);
}

.card-body {
  padding: 1.5rem;
}

.card-footer {
  padding: 1rem 1.5rem;
  border-top: 1px solid var(--gray-200);
  background: var(--gray-50);
}

.card-title {
  font-size: var(--font-size-xl);
  font-weight: 600;
  color: var(--primary-color);
  margin-bottom: 0.5rem;
}

.card-subtitle {
  font-size: var(--font-size-sm);
  color: var(--gray-600);
  margin-bottom: 1rem;
}

.card-text {
  color: var(--gray-700);
  line-height: 1.6;
}

/* ===================================
   Modal Components
   =================================== */

.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(4px);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-base);
}

.modal-overlay.active {
  opacity: 1;
  visibility: visible;
}

.modal {
  background: var(--white);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-xl);
  max-width: 500px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
  transform: scale(0.9);
  transition: all var(--transition-base);
}

.modal-overlay.active .modal {
  transform: scale(1);
}

.modal-header {
  padding: 1.5rem;
  border-bottom: 1px solid var(--gray-200);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.modal-title {
  font-size: var(--font-size-xl);
  font-weight: 600;
  color: var(--primary-color);
  margin: 0;
}

.modal-close {
  background: none;
  border: none;
  font-size: 1.5rem;
  color: var(--gray-500);
  cursor: pointer;
  padding: 0;
  width: 2rem;
  height: 2rem;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  transition: all var(--transition-base);
}

.modal-close:hover {
  background: var(--gray-100);
  color: var(--gray-700);
}

.modal-body {
  padding: 1.5rem;
}

.modal-footer {
  padding: 1rem 1.5rem;
  border-top: 1px solid var(--gray-200);
  display: flex;
  gap: 1rem;
  justify-content: flex-end;
}

/* ===================================
   Alert Components
   =================================== */

.alert {
  padding: 1rem 1.25rem;
  border: 1px solid transparent;
  border-radius: var(--radius-md);
  margin-bottom: 1rem;
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
}

.alert-icon {
  flex-shrink: 0;
  font-size: 1.25rem;
  margin-top: 0.125rem;
}

.alert-content {
  flex: 1;
}

.alert-title {
  font-weight: 600;
  margin-bottom: 0.25rem;
}

.alert-message {
  margin: 0;
  line-height: 1.5;
}

/* Alert Variants */
.alert-success {
  background-color: rgba(40, 167, 69, 0.1);
  border-color: var(--success-color);
  color: #155724;
}

.alert-success .alert-icon {
  color: var(--success-color);
}

.alert-warning {
  background-color: rgba(255, 193, 7, 0.1);
  border-color: var(--warning-color);
  color: #856404;
}

.alert-warning .alert-icon {
  color: var(--warning-color);
}

.alert-danger {
  background-color: rgba(220, 53, 69, 0.1);
  border-color: var(--danger-color);
  color: #721c24;
}

.alert-danger .alert-icon {
  color: var(--danger-color);
}

.alert-info {
  background-color: rgba(27, 55, 132, 0.1);
  border-color: var(--primary-color);
  color: var(--primary-color);
}

.alert-info .alert-icon {
  color: var(--primary-color);
}

/* ===================================
   Badge Components
   =================================== */

.badge {
  display: inline-flex;
  align-items: center;
  padding: 0.25rem 0.5rem;
  font-size: var(--font-size-xs);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border-radius: var(--radius-sm);
  white-space: nowrap;
}

.badge-primary {
  background-color: var(--primary-color);
  color: var(--white);
}

.badge-secondary {
  background-color: var(--gray-500);
  color: var(--white);
}

.badge-success {
  background-color: var(--success-color);
  color: var(--white);
}

.badge-warning {
  background-color: var(--warning-color);
  color: var(--gray-800);
}

.badge-danger {
  background-color: var(--danger-color);
  color: var(--white);
}

.badge-light {
  background-color: var(--gray-100);
  color: var(--gray-800);
}

.badge-dark {
  background-color: var(--gray-800);
  color: var(--white);
}

/* ===================================
   Progress Components
   =================================== */

.progress {
  width: 100%;
  height: 0.5rem;
  background-color: var(--gray-200);
  border-radius: var(--radius-sm);
  overflow: hidden;
}

.progress-bar {
  height: 100%;
  background: var(--primary-gradient);
  border-radius: var(--radius-sm);
  transition: width 0.6s ease;
  position: relative;
}

.progress-bar::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  bottom: 0;
  right: 0;
  background-image: linear-gradient(
    -45deg,
    rgba(255, 255, 255, 0.2) 25%,
    transparent 25%,
    transparent 50%,
    rgba(255, 255, 255, 0.2) 50%,
    rgba(255, 255, 255, 0.2) 75%,
    transparent 75%,
    transparent
  );
  background-size: 1rem 1rem;
  animation: progress-stripes 1s linear infinite;
}

@keyframes progress-stripes {
  0% {
    background-position: 1rem 0;
  }
  100% {
    background-position: 0 0;
  }
}

/* ===================================
   Loading Components
   =================================== */

.spinner {
  display: inline-block;
  width: 2rem;
  height: 2rem;
  border: 0.25rem solid var(--gray-300);
  border-right-color: transparent;
  border-radius: 50%;
  animation: spin 0.75s linear infinite;
}

.spinner-sm {
  width: 1rem;
  height: 1rem;
  border-width: 0.125rem;
}

.spinner-lg {
  width: 3rem;
  height: 3rem;
  border-width: 0.375rem;
}

.spinner-primary {
  border-color: var(--gray-300);
  border-right-color: var(--primary-color);
}

.spinner-white {
  border-color: rgba(255, 255, 255, 0.3);
  border-right-color: var(--white);
}

/* Skeleton Loading */
.skeleton {
  background: linear-gradient(90deg, var(--gray-200) 25%, var(--gray-300) 50%, var(--gray-200) 75%);
  background-size: 200% 100%;
  animation: skeleton-loading 1.5s infinite;
  border-radius: var(--radius-sm);
}

@keyframes skeleton-loading {
  0% {
    background-position: 200% 0;
  }
  100% {
    background-position: -200% 0;
  }
}

.skeleton-text {
  height: 1rem;
  margin-bottom: 0.5rem;
}

.skeleton-text:last-child {
  margin-bottom: 0;
  width: 75%;
}

.skeleton-avatar {
  width: 3rem;
  height: 3rem;
  border-radius: 50%;
}

.skeleton-button {
  width: 6rem;
  height: 2.5rem;
}

/* ===================================
   Tooltip Components
   =================================== */

.tooltip {
  position: relative;
  display: inline-block;
}

.tooltip-trigger {
  cursor: help;
  border-bottom: 1px dotted var(--gray-500);
}

.tooltip-content {
  position: absolute;
  bottom: 125%;
  left: 50%;
  transform: translateX(-50%);
  background: var(--gray-800);
  color: var(--white);
  padding: 0.5rem 0.75rem;
  border-radius: var(--radius-sm);
  font-size: var(--font-size-sm);
  white-space: nowrap;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-base);
  z-index: 1000;
}

.tooltip-content::after {
  content: '';
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%);
  border: 5px solid transparent;
  border-top-color: var(--gray-800);
}

.tooltip:hover .tooltip-content {
  opacity: 1;
  visibility: visible;
}

/* ===================================
   Responsive Components
   =================================== */

@media (max-width: 767.98px) {
  .modal {
    margin: 1rem;
    max-width: none;
  }
  
  .modal-header,
  .modal-body,
  .modal-footer {
    padding: 1rem;
  }
  
  .btn {
    padding: 0.625rem 1.25rem;
    font-size: var(--font-size-sm);
  }
  
  .btn-lg {
    padding: 0.875rem 1.75rem;
    font-size: var(--font-size-base);
  }
  
  .card-body {
    padding: 1rem;
  }
  
  .alert {
    padding: 0.875rem 1rem;
  }
}

@media (max-width: 575.98px) {
  .btn {
    width: 100%;
    justify-content: center;
  }
  
  .modal-footer {
    flex-direction: column;
  }
  
  .modal-footer .btn {
    width: 100%;
  }
}