/* ============================================================
   YBT Management Software — Component Library
   Buttons, cards, KPI cards, badges, forms, tables, modals, etc.
   ============================================================ */

/* ---------- Page Header ---------- */
.page-header {
  margin-bottom: var(--space-6);
}

.page-title {
  font-size: 1.5rem;
  font-weight: var(--font-weight-bold);
  color: var(--color-text);
  line-height: 1.25;
}

.page-subtitle {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
  margin-top: 0.25rem;
}

.page-header-actions {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

/* ---------- Cards ---------- */
.card {
  background: var(--color-card-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  transition: border-color var(--transition);
}

.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-4) var(--space-5);
  border-bottom: 1px solid var(--color-border);
}

.card-title {
  font-size: var(--font-size-md);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text);
  display: flex;
  align-items: center;
}

.card-body {
  padding: var(--space-5);
}

.card-footer {
  padding: var(--space-3) var(--space-5);
  border-top: 1px solid var(--color-border);
  background: var(--color-surface);
}

/* ---------- KPI Cards ---------- */
.kpi-card {
  background: var(--color-card-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
  display: flex;
  flex-direction: column;
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-fast), box-shadow var(--transition-fast), border-color var(--transition-fast);
}

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

.kpi-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-3);
}

.kpi-title {
  font-size: 0.75rem;
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.kpi-icon-badge {
  width: 36px;
  height: 36px;
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.125rem;
  flex-shrink: 0;
}

.kpi-value {
  font-size: 1.75rem;
  font-weight: var(--font-weight-bold);
  line-height: 1.2;
  color: var(--color-text);
  letter-spacing: -0.02em;
  margin-bottom: var(--space-2);
}

.kpi-footer {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  margin-top: auto;
}

/* KPI Card Accent Glows */
.card-glow-primary {
  border-top: 3px solid var(--color-primary);
}
.card-glow-success {
  border-top: 3px solid var(--color-success);
}
.card-glow-warning {
  border-top: 3px solid var(--color-warning);
}
.card-glow-danger {
  border-top: 3px solid var(--color-error);
}
.card-glow-secondary {
  border-top: 3px solid var(--color-secondary);
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.375rem;
  font-family: inherit;
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  line-height: 1.4;
  padding: 0.5rem 1rem;
  border-radius: var(--radius);
  border: 1px solid transparent;
  cursor: pointer;
  text-decoration: none;
  transition: all var(--transition-fast);
  white-space: nowrap;
}

.btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.btn-primary {
  background-color: var(--color-primary);
  color: #ffffff;
}
.btn-primary:hover:not(:disabled) {
  background-color: var(--color-primary-hover);
  box-shadow: 0 2px 6px rgba(14, 165, 233, 0.35);
}

.btn-secondary {
  background-color: var(--color-surface);
  border-color: var(--color-border);
  color: var(--color-text);
}
.btn-secondary:hover:not(:disabled) {
  background-color: var(--color-surface-hover);
  border-color: var(--color-border-hover);
}

.btn-success {
  background-color: var(--color-success);
  color: #ffffff;
}
.btn-success:hover:not(:disabled) {
  filter: brightness(1.1);
}

.btn-danger {
  background-color: var(--color-error);
  color: #ffffff;
}
.btn-danger:hover:not(:disabled) {
  filter: brightness(1.1);
}

.btn-ghost {
  background-color: transparent;
  color: var(--color-text-secondary);
}
.btn-ghost:hover:not(:disabled) {
  background-color: var(--color-surface-hover);
  color: var(--color-text);
}

.btn-outline {
  background-color: transparent;
  border-color: var(--color-primary);
  color: var(--color-primary);
}
.btn-outline:hover:not(:disabled) {
  background-color: var(--color-primary-light);
}

.btn-outline-primary {
  background-color: transparent;
  border-color: var(--color-primary);
  color: var(--color-primary);
}
.btn-outline-primary:hover:not(:disabled) {
  background-color: var(--color-primary-light);
}

.btn-outline-secondary {
  background-color: transparent;
  border-color: var(--color-border);
  color: var(--color-text);
}
.btn-outline-secondary:hover:not(:disabled) {
  background-color: var(--color-surface-hover);
}

.btn-outline-success {
  background-color: transparent;
  border-color: var(--color-success);
  color: var(--color-success);
}
.btn-outline-success:hover:not(:disabled) {
  background-color: var(--color-success-light);
}

/* Button Sizing */
.btn-xs {
  padding: 0.2rem 0.5rem;
  font-size: 0.6875rem;
}
.btn-sm {
  padding: 0.35rem 0.75rem;
  font-size: 0.8125rem;
}
.btn-lg {
  padding: 0.75rem 1.5rem;
  font-size: var(--font-size-md);
}
.btn-icon {
  width: 36px;
  height: 36px;
  padding: 0;
}
.btn-icon.btn-sm {
  width: 28px;
  height: 28px;
}
.btn-block {
  width: 100%;
}
.btn-group {
  display: inline-flex;
  gap: 2px;
}

/* ---------- Badges ---------- */
.badge {
  display: inline-flex;
  align-items: center;
  font-size: 0.75rem;
  font-weight: var(--font-weight-semibold);
  line-height: 1;
  padding: 0.25rem 0.625rem;
  border-radius: var(--radius-full);
  white-space: nowrap;
}

.badge-primary {
  background-color: var(--color-primary-light);
  color: var(--color-primary);
}
.badge-secondary {
  background-color: var(--color-surface-hover);
  color: var(--color-text-secondary);
  border: 1px solid var(--color-border);
}
.badge-success {
  background-color: var(--color-success-light);
  color: var(--color-success);
}
.badge-warning {
  background-color: var(--color-warning-light);
  color: var(--color-warning);
}
.badge-danger {
  background-color: var(--color-error-light);
  color: var(--color-error);
}
.badge-info {
  background-color: var(--color-info-light);
  color: var(--color-info);
}
.badge-subtle {
  background-color: var(--color-surface-hover);
  color: var(--color-text-muted);
}
.badge-accent {
  background: linear-gradient(135deg, var(--color-primary), #8b5cf6);
  color: #ffffff;
}

/* Pulse animation */
@keyframes pulseBadge {
  0% { transform: scale(1); }
  50% { transform: scale(1.08); }
  100% { transform: scale(1); }
}
.badge-pulse {
  animation: pulseBadge 2.5s infinite ease-in-out;
}

/* ---------- Avatars ---------- */
.avatar {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: var(--font-weight-bold);
  text-transform: uppercase;
  flex-shrink: 0;
  border-radius: var(--radius);
}
.avatar-circle {
  border-radius: 50%;
}
.avatar-xs {
  width: 24px;
  height: 24px;
  font-size: 0.625rem;
}
.avatar-sm {
  width: 32px;
  height: 32px;
  font-size: 0.8125rem;
}
.avatar-md {
  width: 42px;
  height: 42px;
  font-size: 1rem;
}
.avatar-lg {
  width: 54px;
  height: 54px;
  font-size: 1.25rem;
}
.avatar-xl {
  width: 72px;
  height: 72px;
  font-size: 1.75rem;
}

/* ---------- Data Tables ---------- */
.table-responsive {
  width: 100%;
  overflow-x: auto;
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: var(--font-size-sm);
  text-align: left;
}

.data-table th {
  padding: 0.75rem 1rem;
  font-size: 0.6875rem;
  font-weight: var(--font-weight-semibold);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-text-muted);
  background-color: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  white-space: nowrap;
}

.data-table td {
  padding: 0.875rem 1rem;
  border-bottom: 1px solid var(--color-border);
  color: var(--color-text);
  vertical-align: middle;
}

.data-table tbody tr {
  transition: background-color var(--transition-fast);
}

.data-table tbody tr:hover {
  background-color: var(--color-surface-hover);
}

/* ---------- Forms & Inputs ---------- */
.form-group {
  display: flex;
  flex-direction: column;
}

.form-label {
  font-size: 0.8125rem;
  font-weight: var(--font-weight-medium);
  color: var(--color-text);
  margin-bottom: 0.375rem;
}

.form-label.required::after {
  content: ' *';
  color: var(--color-error);
}

.form-input,
.form-select,
.form-textarea {
  width: 100%;
  padding: 0.5rem 0.75rem;
  font-family: inherit;
  font-size: var(--font-size-sm);
  color: var(--color-text);
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  outline: none;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(14, 165, 233, 0.15);
}

.form-input-sm,
.form-select-sm {
  padding: 0.35rem 0.625rem;
  font-size: 0.8125rem;
}

.form-textarea {
  resize: vertical;
}
.form-textarea-sm {
  padding: 0.35rem 0.625rem;
  font-size: 0.8125rem;
  resize: vertical;
}

.input-icon-wrapper {
  position: relative;
  display: flex;
  align-items: center;
}

.input-icon-wrapper .input-icon {
  position: absolute;
  left: 0.75rem;
  color: var(--color-text-muted);
  pointer-events: none;
}

.input-icon-wrapper .form-input {
  padding-left: 2.25rem;
}

.btn-toggle-password {
  position: absolute;
  right: 0.75rem;
  background: none;
  border: none;
  color: var(--color-text-muted);
  cursor: pointer;
  padding: 0;
  display: flex;
  align-items: center;
}

/* ---------- Dropdowns ---------- */
.dropdown {
  position: relative;
  display: inline-block;
}

.dropdown-menu {
  display: none;
  position: absolute;
  top: calc(100% + 4px);
  left: 0;
  min-width: 180px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-xl);
  z-index: var(--z-dropdown);
  padding: var(--space-2) 0;
}

.dropdown.open .dropdown-menu {
  display: block;
}

.dropdown-menu-right {
  left: auto;
  right: 0;
}

.dropdown-item {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  width: 100%;
  padding: 0.5rem 1rem;
  font-size: var(--font-size-sm);
  color: var(--color-text);
  text-decoration: none;
  background: none;
  border: none;
  text-align: left;
  cursor: pointer;
  transition: background var(--transition-fast);
}

.dropdown-item:hover {
  background-color: var(--color-surface-hover);
}

.dropdown-header {
  padding: 0.375rem 1rem;
  font-size: 0.6875rem;
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.dropdown-divider {
  height: 1px;
  background: var(--color-border);
  margin: var(--space-1) 0;
}

/* ---------- Modals ---------- */
.modal-backdrop {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.55);
  backdrop-filter: blur(3px);
  z-index: var(--z-modal);
  align-items: center;
  justify-content: center;
  padding: var(--space-4);
  overflow-y: auto;
}

.modal-backdrop.active {
  display: flex;
}

.modal-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-xl);
  width: 100%;
  max-width: 580px;
  max-height: 90vh;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  animation: modalEnter 0.2s cubic-bezier(0.16, 1, 0.3, 1);
}

.modal-lg {
  max-width: 760px;
}

@keyframes modalEnter {
  from { opacity: 0; transform: scale(0.96) translateY(-10px); }
  to { opacity: 1; transform: scale(1) translateY(0); }
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-4) var(--space-6);
  border-bottom: 1px solid var(--color-border);
}

.modal-title {
  font-size: var(--font-size-md);
  font-weight: var(--font-weight-bold);
  color: var(--color-text);
  display: flex;
  align-items: center;
}

.modal-close {
  background: none;
  border: none;
  font-size: 1.5rem;
  line-height: 1;
  color: var(--color-text-muted);
  cursor: pointer;
  padding: 0;
}

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

.modal-body {
  padding: var(--space-6);
  overflow-y: auto;
}

.modal-footer {
  padding: var(--space-4) var(--space-6);
  border-top: 1px solid var(--color-border);
  background: var(--color-surface);
}

/* ---------- Flash Alerts ---------- */
.flash-alert {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius);
  margin-bottom: var(--space-4);
  font-size: var(--font-size-sm);
  position: relative;
}

.flash-success {
  background-color: var(--color-success-light);
  color: var(--color-success);
  border: 1px solid rgba(22, 163, 74, 0.25);
}

.flash-danger {
  background-color: var(--color-error-light);
  color: var(--color-error);
  border: 1px solid rgba(220, 38, 38, 0.25);
}

.flash-warning {
  background-color: var(--color-warning-light);
  color: var(--color-warning);
  border: 1px solid rgba(234, 179, 8, 0.25);
}

.flash-info {
  background-color: var(--color-info-light);
  color: var(--color-info);
  border: 1px solid rgba(14, 165, 233, 0.25);
}

/* ---------- Navigation Tabs ---------- */
.tabs-nav {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  border-bottom: 1px solid var(--color-border);
  padding-bottom: 0;
}

.tab-link {
  padding: 0.625rem 1rem;
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-muted);
  text-decoration: none;
  border-bottom: 2px solid transparent;
  transition: all var(--transition-fast);
  cursor: pointer;
}

.tab-link:hover {
  color: var(--color-text);
}

.tab-link.active {
  color: var(--color-primary);
  border-bottom-color: var(--color-primary);
  font-weight: var(--font-weight-semibold);
}

.settings-section {
  display: none;
}
.settings-section.active {
  display: block;
}

/* ---------- Timeline Component ---------- */
.timeline {
  display: flex;
  flex-direction: column;
  position: relative;
  padding-left: var(--space-4);
}

.timeline::before {
  content: '';
  position: absolute;
  top: 6px;
  bottom: 6px;
  left: 6px;
  width: 2px;
  background: var(--color-border);
}

.timeline-item {
  position: relative;
  padding-bottom: var(--space-3);
  padding-left: var(--space-3);
}

.timeline-dot {
  position: absolute;
  left: -13px;
  top: 4px;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--color-primary);
  border: 2px solid var(--color-surface);
}

/* ---------- AI Assistant Chat ---------- */
.ai-chat-card {
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.ai-message {
  display: flex;
  gap: var(--space-3);
  margin-bottom: var(--space-4);
}

.ai-message-user {
  flex-direction: row-reverse;
}

.ai-avatar {
  width: 34px;
  height: 34px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.user-avatar {
  background: var(--color-primary);
  color: #ffffff;
}
.bot-avatar {
  background: linear-gradient(135deg, var(--color-primary), #8b5cf6);
  color: #ffffff;
}

.ai-message-content {
  max-width: 75%;
}

.ai-bubble {
  padding: 0.75rem 1rem;
  border-radius: var(--radius-lg);
  font-size: var(--font-size-sm);
  line-height: 1.5;
}

.ai-message-assistant .ai-bubble {
  background-color: var(--color-surface-hover);
  color: var(--color-text);
  border-top-left-radius: 2px;
}

.ai-message-user .ai-bubble {
  background-color: var(--color-primary);
  color: #ffffff;
  border-top-right-radius: 2px;
}

.ai-message-time {
  font-size: 0.6875rem;
  color: var(--color-text-muted);
  margin-top: 0.25rem;
}

.ai-prompt-chip {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  padding: 0.25rem 0.75rem;
  font-size: var(--font-size-xs);
  color: var(--color-text);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.ai-prompt-chip:hover {
  background: var(--color-primary-light);
  color: var(--color-primary);
  border-color: var(--color-primary);
}

/* Typing dot animation */
.typing-dot {
  display: inline-block;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-text-muted);
  margin-right: 3px;
  animation: typingBlink 1.4s infinite both;
}
.typing-dot:nth-child(2) { animation-delay: 0.2s; }
.typing-dot:nth-child(3) { animation-delay: 0.4s; }

@keyframes typingBlink {
  0%, 80%, 100% { opacity: 0.2; transform: scale(0.8); }
  40% { opacity: 1; transform: scale(1.1); }
}

/* ---------- Utilities ---------- */
.d-flex { display: flex; }
.flex-column { flex-direction: column; }
.flex-wrap { flex-wrap: wrap; }
.flex-1 { flex: 1; }

.align-center { align-items: center; }
.align-start { align-items: flex-start; }
.align-end { align-items: flex-end; }

.justify-between { justify-content: space-between; }
.justify-center { justify-content: center; }
.justify-end { justify-content: flex-end; }
.justify-start { justify-content: flex-start; }

.gap-1 { gap: var(--space-1); }
.gap-2 { gap: var(--space-2); }
.gap-3 { gap: var(--space-3); }
.gap-4 { gap: var(--space-4); }

.text-left { text-align: left; }
.text-center { text-align: center; }
.text-right { text-align: right; }

.text-xs { font-size: 0.75rem; }
.text-sm { font-size: 0.8125rem; }
.text-md { font-size: 1rem; }
.text-lg { font-size: 1.125rem; }
.text-xl { font-size: 1.25rem; }
.text-2xl { font-size: 1.5rem; }

.font-medium { font-weight: var(--font-weight-medium); }
.font-semibold { font-weight: var(--font-weight-semibold); }
.font-bold { font-weight: var(--font-weight-bold); }

.text-primary { color: var(--color-primary); }
.text-secondary { color: var(--color-secondary); }
.text-success { color: var(--color-success); }
.text-warning { color: var(--color-warning); }
.text-danger { color: var(--color-error); }
.text-info { color: var(--color-info); }
.text-purple { color: #8b5cf6; }
.text-muted { color: var(--color-text-muted); }
.text-white { color: #ffffff; }

.bg-primary { background-color: var(--color-primary); }
.bg-primary-subtle { background-color: var(--color-primary-light); }
.bg-success-subtle { background-color: var(--color-success-light); }
.bg-warning-subtle { background-color: var(--color-warning-light); }
.bg-danger-subtle { background-color: var(--color-error-light); }
.bg-secondary-subtle { background-color: var(--color-surface-hover); }
.bg-subtle { background-color: var(--color-surface-hover); }
.bg-white { background-color: var(--color-surface); }

.m-0 { margin: 0; }
.mb-0 { margin-bottom: 0; }
.mb-1 { margin-bottom: var(--space-1); }
.mb-2 { margin-bottom: var(--space-2); }
.mb-3 { margin-bottom: var(--space-3); }
.mb-4 { margin-bottom: var(--space-4); }
.mb-5 { margin-bottom: var(--space-5); }
.mt-1 { margin-top: var(--space-1); }
.mt-2 { margin-top: var(--space-2); }
.mt-3 { margin-top: var(--space-3); }
.mt-4 { margin-top: var(--space-4); }
.mt-5 { margin-top: var(--space-5); }
.mr-1 { margin-right: var(--space-1); }
.mr-2 { margin-right: var(--space-2); }
.ml-1 { margin-left: var(--space-1); }
.ml-2 { margin-left: var(--space-2); }

.p-0 { padding: 0 !important; }
.p-2 { padding: var(--space-2); }
.p-3 { padding: var(--space-3); }
.p-4 { padding: var(--space-4); }
.p-5 { padding: var(--space-5); }

.border { border: 1px solid var(--color-border); }
.border-top { border-top: 1px solid var(--color-border); }
.border-bottom { border-bottom: 1px solid var(--color-border); }
.border-warning { border-color: var(--color-warning) !important; }
.border-danger { border-color: var(--color-error) !important; }
.rounded { border-radius: var(--radius); }
.cursor-pointer { cursor: pointer; }
.line-through { text-decoration: line-through; }
.min-w-200 { min-width: 200px; }
.h-100 { height: 100%; }