/* =====================================================================
   COMPONENT LIBRARY UNIFICATION (.c- prefix)
   Unified component classes for buttons, forms, containers, modals, and utilities.
   2026-10-30: Phase 3 UI/UX Optimization
   ===================================================================== */

/* ===== BUTTONS (c-btn) ===== */
.c-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 8px 16px;
  border: 1px solid transparent;
  border-radius: var(--r-sm, 6px);
  background: var(--color-neutral-100, #f2f3f5);
  color: var(--color-semantic-text, #16191f);
  font-size: 14px;
  font-weight: 500;
  line-height: 1.4;
  cursor: pointer;
  transition: all 0.15s ease;
  font-family: var(--font-family-primary, inherit);
  text-decoration: none;
  white-space: nowrap;
  user-select: none;
  outline: none;
}

.c-btn:hover {
  background: var(--color-neutral-200, #eaeded);
}

.c-btn:active {
  transform: scale(0.98);
}

.c-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.c-btn:focus-visible {
  outline: 2px solid var(--color-primary, #ed7d31);
  outline-offset: 2px;
}

/* Primary variant */
.c-btn.primary {
  background: var(--color-primary, #ed7d31);
  color: var(--color-neutral-white, #fff);
  border-color: var(--color-primary, #ed7d31);
}

.c-btn.primary:hover {
  background: var(--color-primary-hover, #c55a11);
  border-color: var(--color-primary-hover, #c55a11);
}

/* Secondary variant */
.c-btn.secondary {
  background: var(--color-secondary, #0073bb);
  color: var(--color-neutral-white, #fff);
  border-color: var(--color-secondary, #0073bb);
}

.c-btn.secondary:hover {
  background: var(--color-secondary-hover, #005a92);
  border-color: var(--color-secondary-hover, #005a92);
}

/* Danger variant */
.c-btn.danger {
  background: var(--color-error, #c0392b);
  color: var(--color-neutral-white, #fff);
  border-color: var(--color-error, #c0392b);
}

.c-btn.danger:hover {
  background: var(--color-error-on, #a02822);
  border-color: var(--color-error-on, #a02822);
}

/* Ghost variant (outline only) */
.c-btn.ghost {
  background: transparent;
  border: 1px solid var(--color-neutral-300, #d5dbdb);
  color: var(--color-semantic-text, #16191f);
}

.c-btn.ghost:hover {
  background: var(--color-neutral-100, #f2f3f5);
  border-color: var(--color-primary, #ed7d31);
}

/* Size modifiers */
.c-btn.sm {
  padding: 6px 12px;
  font-size: 13px;
}

.c-btn.lg {
  padding: 12px 24px;
  font-size: 15px;
}

.c-btn.full {
  width: 100%;
}

/* Loading state */
.c-btn.loading {
  opacity: 0.6;
  cursor: wait;
  pointer-events: none;
}

/* ===== FORM ELEMENTS ===== */
.c-input,
.c-select,
.c-textarea {
  display: block;
  width: 100%;
  padding: 8px 12px;
  border: 1px solid var(--color-neutral-300, #d5dbdb);
  border-radius: var(--r-sm, 6px);
  background: var(--color-neutral-white, #fff);
  color: var(--color-semantic-text, #16191f);
  font-size: 14px;
  font-family: var(--font-family-primary, inherit);
  line-height: 1.4;
  transition: all 0.15s ease;
  box-sizing: border-box;
}

.c-input:focus,
.c-select:focus,
.c-textarea:focus {
  outline: none;
  border-color: var(--color-primary, #ed7d31);
  box-shadow: 0 0 0 3px rgba(237, 125, 49, 0.1);
}

.c-input:disabled,
.c-select:disabled,
.c-textarea:disabled {
  background: var(--color-neutral-100, #f2f3f5);
  color: var(--color-semantic-text-disabled, #9ca0aa);
  cursor: not-allowed;
}

.c-input::placeholder,
.c-textarea::placeholder {
  color: var(--color-semantic-text-tertiary, #4f5763);
}

.c-textarea {
  resize: vertical;
  min-height: 100px;
}

/* Checkbox */
.c-checkbox {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
  user-select: none;
}

.c-checkbox input {
  width: 18px;
  height: 18px;
  cursor: pointer;
  accent-color: var(--color-primary, #ed7d31);
}

.c-checkbox input:focus-visible {
  outline: 2px solid var(--color-primary, #ed7d31);
  outline-offset: 2px;
}

/* Radio */
.c-radio {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
  user-select: none;
}

.c-radio input {
  width: 18px;
  height: 18px;
  cursor: pointer;
  accent-color: var(--color-primary, #ed7d31);
}

.c-radio input:focus-visible {
  outline: 2px solid var(--color-primary, #ed7d31);
  outline-offset: 2px;
}

/* Form group */
.c-form-group {
  margin-bottom: 16px;
  display: flex;
  flex-direction: column;
}

.c-form-group label {
  margin-bottom: 6px;
  font-size: 13px;
  font-weight: 600;
  color: var(--color-semantic-text, #16191f);
}

.c-form-group.required label::after {
  content: '*';
  color: var(--color-error, #c0392b);
  margin-left: 4px;
}

.c-form-group .c-help {
  margin-top: 4px;
  font-size: 12px;
  color: var(--color-semantic-text-secondary, #3a414a);
}

.c-form-group .c-error {
  margin-top: 4px;
  font-size: 12px;
  color: var(--color-error, #c0392b);
}

/* ===== CONTAINERS ===== */
.c-card {
  background: var(--color-neutral-white, #fff);
  border: 1px solid var(--color-neutral-300, #d5dbdb);
  border-radius: var(--r-md, 8px);
  overflow: hidden;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.08);
}

.c-card.elevated {
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.12);
}

.c-card-header {
  padding: 16px;
  border-bottom: 1px solid var(--color-neutral-300, #d5dbdb);
  background: var(--color-neutral-100, #f2f3f5);
}

.c-card-header h3,
.c-card-header h4 {
  margin: 0;
  font-size: 15px;
  font-weight: 700;
  color: var(--color-semantic-text, #16191f);
}

.c-card-body {
  padding: 16px;
}

.c-card-footer {
  padding: 12px 16px;
  border-top: 1px solid var(--color-neutral-300, #d5dbdb);
  background: var(--color-neutral-100, #f2f3f5);
  display: flex;
  justify-content: flex-end;
  gap: 8px;
}

/* ===== MODALS ===== */
.c-modal-mask {
  position: fixed;
  inset: 0;
  background: rgba(22, 25, 31, 0.55);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 9998;
  padding: 24px;
  animation: fadeIn 0.15s ease-out;
}

@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

.c-modal {
  background: var(--color-neutral-white, #fff);
  border-radius: var(--r-md, 8px);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.28);
  width: 100%;
  max-width: 500px;
  max-height: 90vh;
  overflow-y: auto;
  animation: slideUp 0.2s ease-out;
}

@keyframes slideUp {
  from {
    opacity: 0;
    transform: translateY(12px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.c-modal-header {
  padding: 20px;
  border-bottom: 1px solid var(--color-neutral-300, #d5dbdb);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.c-modal-header h3 {
  margin: 0;
  font-size: 16px;
  font-weight: 700;
  color: var(--color-semantic-text, #16191f);
}

.c-modal-header .c-modal-close {
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  border: none;
  color: var(--color-semantic-text-secondary, #3a414a);
  cursor: pointer;
  font-size: 20px;
  transition: all 0.15s ease;
}

.c-modal-header .c-modal-close:hover {
  background: var(--color-neutral-100, #f2f3f5);
  color: var(--color-semantic-text, #16191f);
}

.c-modal-body {
  padding: 20px;
}

.c-modal-footer {
  padding: 16px 20px;
  border-top: 1px solid var(--color-neutral-300, #d5dbdb);
  display: flex;
  justify-content: flex-end;
  gap: 8px;
}

/* ===== UTILITIES ===== */
.c-alert {
  padding: 12px 16px;
  border-radius: var(--r-sm, 6px);
  border-left: 3px solid;
  display: flex;
  align-items: flex-start;
  gap: 12px;
}

.c-alert.info {
  background: var(--color-secondary-light, #e6f2fa);
  border-left-color: var(--color-secondary, #0073bb);
  color: var(--color-secondary, #0073bb);
}

.c-alert.success {
  background: var(--color-success-light, #e6f4ea);
  border-left-color: var(--color-success, #1b8a3d);
  color: var(--color-success, #1b8a3d);
}

.c-alert.warning {
  background: var(--color-warning-light, #fff7ed);
  border-left-color: var(--color-warning, #ed7d31);
  color: var(--color-warning, #ed7d31);
}

.c-alert.error {
  background: var(--color-error-light, #fef2f2);
  border-left-color: var(--color-error, #c0392b);
  color: var(--color-error, #c0392b);
}

.c-alert-content {
  flex: 1;
}

.c-alert-title {
  font-weight: 600;
  margin-bottom: 4px;
}

.c-alert-message {
  font-size: 13px;
  line-height: 1.5;
}

/* Badge */
.c-badge {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 12px;
  font-size: 12px;
  font-weight: 600;
  background: var(--color-neutral-200, #eaeded);
  color: var(--color-semantic-text, #16191f);
}

.c-badge.primary {
  background: var(--color-primary, #ed7d31);
  color: var(--color-neutral-white, #fff);
}

.c-badge.success {
  background: var(--color-success-light, #e6f4ea);
  color: var(--color-success, #1b8a3d);
}

.c-badge.error {
  background: var(--color-error-light, #fef2f2);
  color: var(--color-error, #c0392b);
}

.c-badge.warning {
  background: var(--color-warning-light, #fff7ed);
  color: var(--color-warning, #ed7d31);
}

/* Tag */
.c-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  border: 1px solid var(--color-neutral-300, #d5dbdb);
  border-radius: 12px;
  font-size: 13px;
  background: var(--color-neutral-white, #fff);
  color: var(--color-semantic-text, #16191f);
}

.c-tag.removable {
  padding-right: 6px;
}

.c-tag-remove {
  width: 16px;
  height: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: none;
  border: none;
  color: inherit;
  cursor: pointer;
  font-size: 14px;
  line-height: 1;
}

.c-tag-remove:hover {
  color: var(--color-error, #c0392b);
}

/* Tooltip */
.c-tooltip {
  position: relative;
  display: inline-block;
  border-bottom: 1px dotted var(--color-primary, #ed7d31);
  cursor: help;
}

.c-tooltip .tooltip-text {
  visibility: hidden;
  background: var(--color-semantic-text, #16191f);
  color: var(--color-neutral-white, #fff);
  text-align: center;
  padding: 8px 12px;
  border-radius: 4px;
  font-size: 12px;
  position: absolute;
  z-index: 1;
  bottom: 125%;
  left: 50%;
  transform: translateX(-50%);
  white-space: nowrap;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
  opacity: 0;
  transition: opacity 0.3s ease;
}

.c-tooltip .tooltip-text::after {
  content: '';
  position: absolute;
  top: 100%;
  left: 50%;
  margin-left: -5px;
  border: 5px solid transparent;
  border-top-color: var(--color-semantic-text, #16191f);
}

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

/* Table */
.c-table {
  width: 100%;
  border-collapse: collapse;
  background: var(--color-neutral-white, #fff);
  font-size: 14px;
}

.c-table thead {
  background: var(--color-neutral-100, #f2f3f5);
  border-bottom: 2px solid var(--color-neutral-300, #d5dbdb);
}

.c-table th {
  padding: 12px;
  text-align: left;
  font-weight: 600;
  color: var(--color-semantic-text, #16191f);
}

.c-table td {
  padding: 12px;
  border-bottom: 1px solid var(--color-neutral-200, #eaeded);
}

.c-table tbody tr:hover {
  background: var(--color-neutral-100, #f2f3f5);
}

.c-table tbody tr:last-child td {
  border-bottom: none;
}

/* Pagination */
.c-pagination {
  display: flex;
  align-items: center;
  gap: 4px;
  margin-top: 16px;
  justify-content: center;
}

.c-pagination-item {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border: 1px solid var(--color-neutral-300, #d5dbdb);
  background: var(--color-neutral-white, #fff);
  color: var(--color-semantic-text, #16191f);
  cursor: pointer;
  border-radius: 4px;
  font-size: 14px;
  transition: all 0.15s ease;
  text-decoration: none;
}

.c-pagination-item:hover {
  border-color: var(--color-primary, #ed7d31);
  color: var(--color-primary, #ed7d31);
}

.c-pagination-item.active {
  background: var(--color-primary, #ed7d31);
  border-color: var(--color-primary, #ed7d31);
  color: var(--color-neutral-white, #fff);
}

.c-pagination-item:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.c-pagination-item.prev,
.c-pagination-item.next {
  width: auto;
  padding: 0 8px;
}

.c-pagination-text {
  padding: 0 8px;
  color: var(--color-semantic-text-secondary, #3a414a);
  font-size: 13px;
}

/* Divider */
.c-divider {
  height: 1px;
  background: var(--color-neutral-300, #d5dbdb);
  margin: 16px 0;
}

.c-divider.vertical {
  width: 1px;
  height: auto;
  display: inline-block;
  margin: 0 16px;
}

/* Spinner */
.c-spinner {
  display: inline-block;
  width: 24px;
  height: 24px;
  border: 2px solid var(--color-neutral-200, #eaeded);
  border-top-color: var(--color-primary, #ed7d31);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

@keyframes spin {
  from {
    transform: rotate(0deg);
  }
  to {
    transform: rotate(360deg);
  }
}

/* ===== BACKWARD COMPATIBILITY ===== */
/* Map old .sbf-* classes to new .c-* where applicable */
.sbf-item {
  /* Styled in sidebar.php, leaving intact for now */
}

.sbf-btn,
.btn {
  /* Use .c-btn for new components, but don't break existing */
}