/* =============================================
   bertui-components — default styles v1.0.0
   ============================================= */

/* ---------- SIDEBAR ---------- */
.bertui-sidebar {
  display: flex;
  flex-direction: column;
  width: 240px;
  min-height: 100vh;
  background: #111827;
  color: #f9fafb;
  transition: width 0.25s ease;
  overflow: hidden;
  position: relative;
}

.bertui-sidebar--collapsed {
  width: 60px;
}

.bertui-sidebar--right {
  order: 1;
}

.bertui-sidebar-hamburger {
  display: flex;
  flex-direction: column;
  gap: 5px;
  padding: 16px;
  background: none;
  border: none;
  cursor: pointer;
  align-self: flex-start;
  margin-bottom: 8px;
}

.bertui-sidebar-hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: #f9fafb;
  border-radius: 2px;
  transition: all 0.2s;
}

.bertui-sidebar-nav {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 0 8px;
}

.bertui-sidebar-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 12px;
  border-radius: 8px;
  color: #d1d5db;
  text-decoration: none;
  font-size: 14px;
  font-weight: 500;
  transition: background 0.15s, color 0.15s;
  white-space: nowrap;
  overflow: hidden;
}

.bertui-sidebar-item:hover {
  background: #1f2937;
  color: #ffffff;
}

.bertui-sidebar-item-icon {
  flex-shrink: 0;
  font-size: 18px;
  width: 20px;
  text-align: center;
}

.bertui-sidebar-item-label {
  opacity: 1;
  transition: opacity 0.2s;
}

.bertui-sidebar--collapsed .bertui-sidebar-item-label {
  opacity: 0;
  width: 0;
  pointer-events: none;
}

/* ---------- TOPNAV ---------- */
.bertui-topnav {
  display: flex;
  align-items: center;
  gap: 16px;
  width: 100%;
  padding: 0 24px;
  height: 60px;
  background: #111827;
  color: #f9fafb;
  box-shadow: 0 1px 4px rgba(0,0,0,0.2);
  box-sizing: border-box;
}

.bertui-topnav--sticky {
  position: sticky;
  top: 0;
  z-index: 100;
}

.bertui-topnav-logo {
  font-size: 18px;
  font-weight: 700;
  color: #f9fafb;
  text-decoration: none;
  margin-right: auto;
}

.bertui-topnav-nav {
  display: flex;
  align-items: center;
  gap: 4px;
}

.bertui-topnav-item {
  padding: 8px 14px;
  border-radius: 6px;
  color: #d1d5db;
  text-decoration: none;
  font-size: 14px;
  font-weight: 500;
  transition: background 0.15s, color 0.15s;
}

.bertui-topnav-item:hover {
  background: #1f2937;
  color: #ffffff;
}

/* ---------- CAROUSEL ---------- */
.bertui-carousel {
  position: relative;
  overflow: hidden;
  width: 100%;
  border-radius: 12px;
  background: #000;
}

.bertui-carousel-track {
  display: flex;
  transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  will-change: transform;
}

.bertui-carousel-slide {
  flex: 0 0 100%;
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.bertui-carousel-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.bertui-carousel-btn {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  background: rgba(0,0,0,0.45);
  color: #fff;
  border: none;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  font-size: 18px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.2s;
  z-index: 2;
}

.bertui-carousel-btn:hover {
  background: rgba(0,0,0,0.7);
}

.bertui-carousel-btn--prev { left: 12px; }
.bertui-carousel-btn--next { right: 12px; }

.bertui-carousel-dots {
  position: absolute;
  bottom: 12px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 6px;
  z-index: 2;
}

.bertui-carousel-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  border: none;
  background: rgba(255,255,255,0.5);
  cursor: pointer;
  transition: background 0.2s, transform 0.2s;
  padding: 0;
}

.bertui-carousel-dot--active {
  background: #fff;
  transform: scale(1.3);
}

/* ---------- SEARCH ---------- */
.bertui-search {
  display: flex;
  align-items: center;
  gap: 8px;
  background: #1f2937;
  border: 1px solid #374151;
  border-radius: 8px;
  padding: 0 12px;
  height: 40px;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.bertui-search:focus-within {
  border-color: #6366f1;
  box-shadow: 0 0 0 3px rgba(99,102,241,0.15);
}

.bertui-search-icon {
  color: #6b7280;
  display: flex;
  align-items: center;
  flex-shrink: 0;
}

.bertui-search-input {
  flex: 1;
  background: none;
  border: none;
  outline: none;
  color: #f9fafb;
  font-size: 14px;
  min-width: 0;
}

.bertui-search-input::placeholder {
  color: #6b7280;
}

.bertui-search-clear {
  background: none;
  border: none;
  color: #6b7280;
  cursor: pointer;
  font-size: 18px;
  line-height: 1;
  padding: 0;
  display: flex;
  align-items: center;
  transition: color 0.15s;
}

.bertui-search-clear:hover {
  color: #f9fafb;
}

/* ---------- TOOLTIP ---------- */
.bertui-tooltip-wrapper {
  position: relative;
  display: inline-flex;
  align-items: center;
}

.bertui-tooltip {
  position: absolute;
  background: #1f2937;
  color: #f9fafb;
  font-size: 12px;
  padding: 5px 10px;
  border-radius: 6px;
  white-space: nowrap;
  pointer-events: none;
  z-index: 9999;
  box-shadow: 0 2px 8px rgba(0,0,0,0.3);
}

.bertui-tooltip--top    { bottom: calc(100% + 6px); left: 50%; transform: translateX(-50%); }
.bertui-tooltip--bottom { top: calc(100% + 6px);    left: 50%; transform: translateX(-50%); }
.bertui-tooltip--left   { right: calc(100% + 6px);  top: 50%;  transform: translateY(-50%); }
.bertui-tooltip--right  { left: calc(100% + 6px);   top: 50%;  transform: translateY(-50%); }

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

.bertui-dropdown-trigger {
  cursor: pointer;
}

.bertui-dropdown-menu {
  position: absolute;
  top: calc(100% + 6px);
  min-width: 180px;
  background: #1f2937;
  border: 1px solid #374151;
  border-radius: 10px;
  padding: 6px;
  z-index: 1000;
  box-shadow: 0 8px 24px rgba(0,0,0,0.3);
}

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

.bertui-dropdown-item {
  display: flex;
  align-items: center;
  gap: 10px;
  width: 100%;
  padding: 8px 12px;
  background: none;
  border: none;
  color: #d1d5db;
  font-size: 14px;
  border-radius: 6px;
  cursor: pointer;
  text-align: left;
  transition: background 0.15s, color 0.15s;
}

.bertui-dropdown-item:hover {
  background: #374151;
  color: #fff;
}

.bertui-dropdown-item-icon {
  font-size: 16px;
  width: 18px;
  text-align: center;
}

.bertui-dropdown-divider {
  height: 1px;
  background: #374151;
  margin: 4px 0;
}

/* ---------- CONTEXT MENU ---------- */
.bertui-contextmenu {
  position: fixed;
  min-width: 180px;
  background: #1f2937;
  border: 1px solid #374151;
  border-radius: 10px;
  padding: 6px;
  z-index: 9998;
  box-shadow: 0 8px 24px rgba(0,0,0,0.4);
}

/* ---------- COMMAND PALETTE ---------- */
.bertui-cmdpalette-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.6);
  z-index: 9999;
  display: flex;
  align-items: flex-start;
  justify-content: center;
  padding-top: 15vh;
  backdrop-filter: blur(2px);
}

.bertui-cmdpalette {
  width: 100%;
  max-width: 560px;
  background: #111827;
  border: 1px solid #374151;
  border-radius: 14px;
  overflow: hidden;
  box-shadow: 0 24px 64px rgba(0,0,0,0.5);
}

.bertui-cmdpalette-search {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 14px 16px;
  border-bottom: 1px solid #1f2937;
  color: #6b7280;
}

.bertui-cmdpalette-input {
  flex: 1;
  background: none;
  border: none;
  outline: none;
  color: #f9fafb;
  font-size: 16px;
}

.bertui-cmdpalette-esc {
  font-size: 11px;
  background: #1f2937;
  color: #6b7280;
  padding: 2px 6px;
  border-radius: 4px;
  border: 1px solid #374151;
}

.bertui-cmdpalette-results {
  max-height: 360px;
  overflow-y: auto;
  padding: 6px;
}

.bertui-cmdpalette-item {
  display: flex;
  align-items: center;
  gap: 10px;
  width: 100%;
  padding: 10px 14px;
  background: none;
  border: none;
  color: #d1d5db;
  font-size: 14px;
  border-radius: 8px;
  cursor: pointer;
  text-align: left;
  transition: background 0.15s, color 0.15s;
}

.bertui-cmdpalette-item:hover {
  background: #1f2937;
  color: #fff;
}

.bertui-cmdpalette-item-icon {
  font-size: 18px;
  width: 22px;
  text-align: center;
}

.bertui-cmdpalette-shortcut {
  margin-left: auto;
  font-size: 11px;
  background: #1f2937;
  color: #6b7280;
  padding: 2px 6px;
  border-radius: 4px;
  border: 1px solid #374151;
}

.bertui-cmdpalette-empty {
  padding: 24px;
  text-align: center;
  color: #6b7280;
  font-size: 14px;
}

/* ---------- MODAL ---------- */
.bertui-modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.6);
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: center;
  backdrop-filter: blur(2px);
}

.bertui-modal {
  background: #111827;
  border: 1px solid #374151;
  border-radius: 14px;
  width: 100%;
  box-shadow: 0 24px 64px rgba(0,0,0,0.5);
  overflow: hidden;
}

.bertui-modal--sm { max-width: 380px; }
.bertui-modal--md { max-width: 560px; }
.bertui-modal--lg { max-width: 800px; }
.bertui-modal--xl { max-width: 1100px; }

.bertui-modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 20px;
  border-bottom: 1px solid #1f2937;
}

.bertui-modal-title {
  margin: 0;
  font-size: 16px;
  font-weight: 600;
  color: #f9fafb;
}

.bertui-modal-close {
  background: none;
  border: none;
  color: #6b7280;
  font-size: 22px;
  cursor: pointer;
  line-height: 1;
  padding: 0;
  transition: color 0.15s;
}

.bertui-modal-close:hover { color: #f9fafb; }

.bertui-modal-body {
  padding: 20px;
  color: #d1d5db;
  font-size: 14px;
  line-height: 1.6;
}

/* ---------- DRAWER ---------- */
.bertui-drawer-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.5);
  z-index: 998;
  backdrop-filter: blur(2px);
}

.bertui-drawer {
  position: fixed;
  background: #111827;
  border-color: #374151;
  border-style: solid;
  z-index: 999;
  transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow: 0 8px 40px rgba(0,0,0,0.4);
}

.bertui-drawer--right  { top: 0; right: 0; height: 100%; border-left-width: 1px;  transform: translateX(100%); }
.bertui-drawer--left   { top: 0; left: 0;  height: 100%; border-right-width: 1px; transform: translateX(-100%); }
.bertui-drawer--bottom { bottom: 0; left: 0; width: 100%; border-top-width: 1px;  transform: translateY(100%); }
.bertui-drawer--top    { top: 0;    left: 0; width: 100%; border-bottom-width: 1px; transform: translateY(-100%); }

.bertui-drawer--open { transform: translate(0, 0); }

.bertui-drawer-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 20px;
  border-bottom: 1px solid #1f2937;
}

.bertui-drawer-title {
  margin: 0;
  font-size: 16px;
  font-weight: 600;
  color: #f9fafb;
}

.bertui-drawer-body {
  padding: 20px;
  color: #d1d5db;
  font-size: 14px;
  overflow-y: auto;
  height: calc(100% - 64px);
}

/* ---------- TOAST ---------- */
.bertui-toast-container {
  position: fixed;
  bottom: 20px;
  right: 20px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  z-index: 99999;
}

.bertui-toast {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 12px 16px;
  border-radius: 10px;
  font-size: 14px;
  min-width: 260px;
  max-width: 380px;
  box-shadow: 0 8px 24px rgba(0,0,0,0.3);
  animation: bertui-toast-in 0.25s ease;
}

@keyframes bertui-toast-in {
  from { opacity: 0; transform: translateY(12px); }
  to   { opacity: 1; transform: translateY(0); }
}

.bertui-toast--info    { background: #1f2937; color: #f9fafb; border: 1px solid #374151; }
.bertui-toast--success { background: #064e3b; color: #d1fae5; border: 1px solid #065f46; }
.bertui-toast--error   { background: #7f1d1d; color: #fee2e2; border: 1px solid #991b1b; }
.bertui-toast--warning { background: #78350f; color: #fef3c7; border: 1px solid #92400e; }

.bertui-toast-close {
  background: none;
  border: none;
  color: inherit;
  font-size: 18px;
  cursor: pointer;
  opacity: 0.7;
  padding: 0;
  line-height: 1;
  flex-shrink: 0;
}

.bertui-toast-close:hover { opacity: 1; }

/* ---------- INPUT ---------- */
.bertui-input-wrapper {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.bertui-input-label {
  font-size: 13px;
  font-weight: 500;
  color: #d1d5db;
}

.bertui-input-field {
  display: flex;
  align-items: center;
  gap: 8px;
  background: #1f2937;
  border: 1px solid #374151;
  border-radius: 8px;
  padding: 0 12px;
  height: 40px;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.bertui-input-field:focus-within {
  border-color: #6366f1;
  box-shadow: 0 0 0 3px rgba(99,102,241,0.15);
}

.bertui-input-field--error {
  border-color: #ef4444;
}

.bertui-input-field--error:focus-within {
  box-shadow: 0 0 0 3px rgba(239,68,68,0.15);
}

.bertui-input-field--disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.bertui-input-icon {
  color: #6b7280;
  display: flex;
  align-items: center;
  flex-shrink: 0;
}

.bertui-input {
  flex: 1;
  background: none;
  border: none;
  outline: none;
  color: #f9fafb;
  font-size: 14px;
  min-width: 0;
}

.bertui-input::placeholder { color: #6b7280; }
.bertui-input:disabled { cursor: not-allowed; }

.bertui-input-error { font-size: 12px; color: #ef4444; }
.bertui-input-hint  { font-size: 12px; color: #6b7280; }

/* ---------- SELECT ---------- */
.bertui-select-wrapper {
  position: relative;
  display: flex;
  align-items: center;
  background: #1f2937;
  border: 1px solid #374151;
  border-radius: 8px;
  height: 40px;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.bertui-select-wrapper:focus-within {
  border-color: #6366f1;
  box-shadow: 0 0 0 3px rgba(99,102,241,0.15);
}

.bertui-select {
  flex: 1;
  background: none;
  border: none;
  outline: none;
  color: #f9fafb;
  font-size: 14px;
  padding: 0 36px 0 12px;
  height: 100%;
  appearance: none;
  cursor: pointer;
}

.bertui-select option { background: #1f2937; }

.bertui-select-arrow {
  position: absolute;
  right: 12px;
  color: #6b7280;
  pointer-events: none;
  font-size: 12px;
}

/* ---------- TOGGLE ---------- */
.bertui-toggle {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  cursor: pointer;
  user-select: none;
}

.bertui-toggle--disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.bertui-toggle-input {
  display: none;
}

.bertui-toggle-track {
  width: 44px;
  height: 24px;
  background: #374151;
  border-radius: 999px;
  position: relative;
  transition: background 0.2s;
  flex-shrink: 0;
}

.bertui-toggle-input:checked + .bertui-toggle-track {
  background: #6366f1;
}

.bertui-toggle-thumb {
  position: absolute;
  top: 3px;
  left: 3px;
  width: 18px;
  height: 18px;
  background: #fff;
  border-radius: 50%;
  transition: left 0.2s cubic-bezier(0.4,0,0.2,1);
  box-shadow: 0 1px 3px rgba(0,0,0,0.3);
}

.bertui-toggle-input:checked ~ .bertui-toggle-track .bertui-toggle-thumb,
.bertui-toggle-input:checked + .bertui-toggle-track .bertui-toggle-thumb {
  left: 23px;
}

.bertui-toggle-label {
  font-size: 14px;
  color: #d1d5db;
}

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

.bertui-checkbox--disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.bertui-checkbox-input {
  display: none;
}

.bertui-checkbox-box {
  width: 18px;
  height: 18px;
  border: 2px solid #374151;
  border-radius: 4px;
  background: #1f2937;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: background 0.15s, border-color 0.15s;
}

.bertui-checkbox-input:checked + .bertui-checkbox-box {
  background: #6366f1;
  border-color: #6366f1;
  color: #fff;
}

.bertui-checkbox-box svg {
  width: 10px;
  height: 10px;
}

.bertui-checkbox-dash {
  display: block;
  width: 10px;
  height: 2px;
  background: #fff;
  border-radius: 1px;
}

.bertui-checkbox-label {
  font-size: 14px;
  color: #d1d5db;
}

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

.bertui-radio--disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.bertui-radio-input {
  display: none;
}

.bertui-radio-circle {
  width: 18px;
  height: 18px;
  border: 2px solid #374151;
  border-radius: 50%;
  background: #1f2937;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: border-color 0.15s;
}

.bertui-radio-input:checked + .bertui-radio-circle {
  border-color: #6366f1;
}

.bertui-radio-dot {
  width: 8px;
  height: 8px;
  background: #6366f1;
  border-radius: 50%;
}

.bertui-radio-group {
  display: flex;
  flex-direction: column;
  gap: 10px;
}