/* ==========================================================================
   AURANTRA DESIGN SYSTEM - REUSABLE COMPONENTS
   ========================================================================== */

/* --------------------------------------------------------------------------
   BUTTONS
   -------------------------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  font-family: var(--font-family-heading);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  letter-spacing: var(--letter-spacing-normal);
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius-md);
  text-decoration: none;
  cursor: pointer;
  transition: all var(--transition-fast);
  white-space: nowrap;
  position: relative;
  user-select: none;
}

.btn:disabled,
.btn[aria-disabled="true"] {
  opacity: 0.65;
  cursor: not-allowed;
  pointer-events: none;
}

.btn-primary {
  background-color: var(--color-primary);
  color: var(--color-text-inverse);
  box-shadow: var(--shadow-sm);
}

.btn-primary:hover {
  background-color: var(--color-primary-light);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

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

.btn-accent {
  background-color: var(--color-brand-blue);
  color: var(--color-text-inverse);
  box-shadow: var(--shadow-sm);
}

.btn-accent:hover {
  background-color: var(--color-brand-blue-hover);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.btn-secondary {
  background-color: var(--color-bg-card);
  color: var(--color-text-primary);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-xs);
}

.btn-secondary:hover {
  background-color: var(--color-bg-subtle);
  border-color: var(--color-border-hover);
  transform: translateY(-1px);
  box-shadow: var(--shadow-sm);
}

.btn-outline {
  background-color: transparent;
  color: var(--color-text-primary);
  border: 1.5px solid var(--color-border);
}

.btn-outline:hover {
  background-color: var(--color-bg-subtle);
  border-color: var(--color-primary);
}

.btn-outline-light {
  background-color: transparent;
  color: var(--color-text-inverse);
  border: 1.5px solid rgba(255, 255, 255, 0.25);
}

.btn-outline-light:hover {
  background-color: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.6);
}

.btn-lg {
  font-size: var(--font-size-base);
  padding: 0.95rem 2rem;
  border-radius: var(--radius-md);
}

.btn-sm {
  font-size: var(--font-size-xs);
  padding: 0.5rem 1rem;
}

.btn-block {
  width: 100%;
}

.btn-icon-end svg {
  transition: transform var(--transition-fast);
}

.btn:hover .btn-icon-end svg {
  transform: translateX(3px);
}

/* Button Loading Spinner */
.spinner {
  display: inline-block;
  width: 1.125rem;
  height: 1.125rem;
  border: 2px solid rgba(255, 255, 255, 0.3);
  border-radius: 50%;
  border-top-color: #FFFFFF;
  animation: spin 0.75s cubic-bezier(0.68, -0.55, 0.27, 1.55) infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* --------------------------------------------------------------------------
   CARDS & CONTAINERS
   -------------------------------------------------------------------------- */
.card {
  background-color: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-8);
  transition: transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base);
  position: relative;
}

.card:hover {
  border-color: var(--color-border-hover);
}

.card-elevated {
  box-shadow: var(--shadow-md);
}

.card-elevated:hover {
  box-shadow: var(--shadow-card-hover);
  transform: translateY(-4px);
}

/* --------------------------------------------------------------------------
   FORM ELEMENTS & VALIDATION
   -------------------------------------------------------------------------- */
.form-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-5);
}

.form-grid-full {
  grid-column: 1 / -1;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  position: relative;
}

.form-label {
  font-family: var(--font-family-heading);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.required-mark {
  color: var(--color-error);
  margin-left: 2px;
  font-weight: var(--font-weight-bold);
}

.form-hint {
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
  font-weight: var(--font-weight-regular);
}

.form-input,
.form-select,
.form-textarea {
  width: 100%;
  padding: 0.8rem 1rem;
  font-family: var(--font-family-body);
  font-size: var(--font-size-sm);
  color: var(--color-text-primary);
  background-color: #FFFFFF;
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-md);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast), background-color var(--transition-fast);
  appearance: none;
}

.form-input::placeholder,
.form-textarea::placeholder {
  color: #94A3B8;
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--color-border-focus);
  box-shadow: 0 0 0 3px rgba(29, 78, 216, 0.12);
}

.form-select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%23475569' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 1rem center;
  background-size: 1rem;
  padding-right: 2.5rem;
}

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

/* Validation Feedback */
.form-feedback {
  font-size: var(--font-size-xs);
  color: var(--color-error);
  display: none;
  align-items: center;
  gap: 4px;
  margin-top: 2px;
  font-weight: var(--font-weight-medium);
}

.form-group.has-error .form-feedback {
  display: flex;
}

.form-group.has-error .form-input,
.form-group.has-error .form-select,
.form-group.has-error .form-textarea {
  border-color: var(--color-error);
  background-color: var(--color-error-bg);
}

.form-group.has-error .form-input:focus,
.form-group.has-error .form-select:focus,
.form-group.has-error .form-textarea:focus {
  box-shadow: 0 0 0 3px rgba(220, 38, 38, 0.15);
}

/* File Upload Dropzone */
.file-dropzone {
  border: 2px dashed var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-6) var(--space-4);
  text-align: center;
  background-color: var(--color-bg-subtle);
  cursor: pointer;
  transition: all var(--transition-fast);
  position: relative;
}

.file-dropzone:hover,
.file-dropzone.drag-active {
  border-color: var(--color-brand-blue);
  background-color: var(--color-brand-blue-light);
}

.file-dropzone-icon {
  width: 40px;
  height: 40px;
  margin: 0 auto var(--space-2);
  color: var(--color-brand-blue);
}

.file-dropzone-title {
  font-family: var(--font-family-heading);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
  margin-bottom: 2px;
}

.file-dropzone-meta {
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
}

.file-input-hidden {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  opacity: 0;
  cursor: pointer;
}

.file-attached-pill {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  background-color: #FFFFFF;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-medium);
  margin-top: var(--space-3);
  box-shadow: var(--shadow-xs);
}

.file-attached-pill .remove-file-btn {
  color: var(--color-text-muted);
  cursor: pointer;
  padding: 2px;
  display: flex;
  align-items: center;
}

.file-attached-pill .remove-file-btn:hover {
  color: var(--color-error);
}

/* --------------------------------------------------------------------------
   ACCORDION (FAQ)
   -------------------------------------------------------------------------- */
.accordion {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.accordion-item {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background-color: var(--color-bg-card);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
  overflow: hidden;
}

.accordion-item.active {
  border-color: var(--color-border-hover);
  box-shadow: var(--shadow-sm);
}

.accordion-header {
  width: 100%;
  padding: var(--space-5) var(--space-6);
  text-align: left;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  font-family: var(--font-family-heading);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
  background: none;
  cursor: pointer;
  transition: color var(--transition-fast);
}

.accordion-header:hover {
  color: var(--color-brand-blue);
}

.accordion-icon {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
  transition: transform var(--transition-base);
  color: var(--color-text-muted);
}

.accordion-item.active .accordion-icon {
  transform: rotate(180deg);
  color: var(--color-brand-blue);
}

.accordion-content {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition-base) ease-out;
  padding: 0 var(--space-6);
}

.accordion-item.active .accordion-content {
  max-height: 500px;
  padding-bottom: var(--space-6);
}

.accordion-content p {
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
  line-height: var(--line-height-relaxed);
}

/* --------------------------------------------------------------------------
   TOAST NOTIFICATIONS
   -------------------------------------------------------------------------- */
.toast-container {
  position: fixed;
  bottom: var(--space-6);
  right: var(--space-6);
  z-index: var(--z-toast);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  max-width: 420px;
  width: calc(100% - 2 * var(--space-6));
  pointer-events: none;
}

.toast {
  pointer-events: auto;
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  padding: var(--space-4) var(--space-5);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-xl);
  font-size: var(--font-size-sm);
  line-height: var(--line-height-normal);
  background-color: #FFFFFF;
  border-left: 4px solid var(--color-brand-blue);
  animation: slideInToast 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  transition: all var(--transition-base);
}

@keyframes slideInToast {
  from {
    transform: translateY(20px);
    opacity: 0;
  }
  to {
    transform: translateY(0);
    opacity: 1;
  }
}

.toast-success {
  border-left-color: var(--color-success);
  background-color: var(--color-success-bg);
  border: 1px solid var(--color-success-border);
  border-left-width: 4px;
}

.toast-error {
  border-left-color: var(--color-error);
  background-color: var(--color-error-bg);
  border: 1px solid var(--color-error-border);
  border-left-width: 4px;
}

.toast-icon {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
  margin-top: 1px;
}

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

.toast-error .toast-icon {
  color: var(--color-error);
}

.toast-content {
  flex-grow: 1;
}

.toast-title {
  font-family: var(--font-family-heading);
  font-weight: var(--font-weight-semibold);
  margin-bottom: 2px;
  color: var(--color-text-primary);
}

.toast-message {
  font-size: var(--font-size-xs);
  color: var(--color-text-secondary);
}

.toast-close {
  color: var(--color-text-muted);
  cursor: pointer;
  padding: 2px;
  margin-left: var(--space-2);
}

.toast-close:hover {
  color: var(--color-text-primary);
}

/* --------------------------------------------------------------------------
   MODALS
   -------------------------------------------------------------------------- */
.modal-backdrop {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background-color: rgba(15, 23, 42, 0.65);
  backdrop-filter: blur(4px);
  z-index: var(--z-modal-backdrop);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-4);
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-base);
}

.modal-backdrop.is-open {
  opacity: 1;
  visibility: visible;
}

.modal-dialog {
  background-color: var(--color-bg-card);
  border-radius: var(--radius-lg);
  max-width: 600px;
  width: 100%;
  max-height: 85vh;
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-xl);
  border: 1px solid var(--color-border);
  transform: scale(0.95);
  transition: transform var(--transition-base);
  overflow: hidden;
}

.modal-backdrop.is-open .modal-dialog {
  transform: scale(1);
}

.modal-header {
  padding: var(--space-6);
  border-bottom: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.modal-title {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-bold);
}

.modal-close {
  color: var(--color-text-muted);
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}

.modal-close:hover {
  background-color: var(--color-bg-muted);
  color: var(--color-text-primary);
}

.modal-body {
  padding: var(--space-6);
  overflow-y: auto;
  font-size: var(--font-size-sm);
  line-height: var(--line-height-relaxed);
  color: var(--color-text-secondary);
}

.modal-body h4 {
  margin-top: var(--space-4);
  margin-bottom: var(--space-2);
  color: var(--color-text-primary);
}

.modal-body p {
  margin-bottom: var(--space-3);
}

.modal-body ul {
  margin-left: var(--space-4);
  margin-bottom: var(--space-4);
  list-style: disc;
}

.modal-footer {
  padding: var(--space-4) var(--space-6);
  border-top: 1px solid var(--color-border);
  display: flex;
  justify-content: flex-end;
  gap: var(--space-3);
  background-color: var(--color-bg-subtle);
}

/* --------------------------------------------------------------------------
   BADGES & PILLS
   -------------------------------------------------------------------------- */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 0.25rem 0.65rem;
  border-radius: var(--radius-full);
  font-family: var(--font-family-heading);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-semibold);
  letter-spacing: 0.02em;
}

.badge-blue {
  background-color: var(--color-brand-blue-light);
  color: var(--color-brand-blue);
}

.badge-amber {
  background-color: var(--color-accent-subtle);
  color: var(--color-accent);
}

.badge-slate {
  background-color: var(--color-bg-muted);
  color: var(--color-text-secondary);
}

/* Responsive adjustment for forms */
@media (max-width: 640px) {
  .form-grid {
    grid-template-columns: 1fr;
  }
}