/**
 * BizEdu LMS Component Styles
 * Reference: Seoul Lifelong Learning Portal (sll.seoul.go.kr)
 *
 * Component classes use design tokens from theme.css
 */

/* ========================================
 * LAYOUT COMPONENTS
 * ======================================== */

/* Container */
.container {
  width: 100%;
  max-width: var(--container-max-width);
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--container-padding);
  padding-right: var(--container-padding);
}

/* Main Layout */
.layout {
  display: flex;
  min-height: 100vh;
}

.layout__sidebar {
  width: var(--sidebar-width);
  flex-shrink: 0;
  background-color: var(--color-bg-primary);
  border-right: 1px solid var(--color-border-light);
  transition: width var(--transition-normal);
}

.layout__sidebar--collapsed {
  width: var(--sidebar-collapsed-width);
}

.layout__main {
  flex: 1;
  display: flex;
  flex-direction: column;
  min-width: 0;
}

.layout__header {
  height: var(--header-height);
  background-color: var(--color-bg-primary);
  border-bottom: 1px solid var(--color-border-light);
  display: flex;
  align-items: center;
  padding: 0 var(--spacing-6);
  position: sticky;
  top: 0;
  z-index: var(--z-sticky);
}

.layout__content {
  flex: 1;
  padding: var(--spacing-6);
  overflow-y: auto;
}

/* Admin Page Layout */
.admin-page {
  padding: var(--spacing-6);
}

.admin-page > * + * {
  margin-top: var(--spacing-6);
}

/* ========================================
 * BUTTON COMPONENTS
 * ======================================== */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-2);
  padding: var(--spacing-2) var(--spacing-4);
  font-family: var(--font-family-sans);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  line-height: var(--line-height-tight);
  text-decoration: none;
  border: 1px solid transparent;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-fast);
  white-space: nowrap;
}

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

.btn:focus-visible {
  outline: 2px solid var(--color-border-focus);
  outline-offset: 2px;
}

/* Button Variants */
.btn--primary {
  background-color: var(--color-primary);
  color: var(--color-text-inverse);
}

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

.btn--primary:active:not(:disabled) {
  background-color: var(--color-primary-active);
}

.btn--secondary {
  background-color: var(--color-bg-primary);
  color: var(--color-text-primary);
  border-color: var(--color-border-default);
}

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

.btn--ghost {
  background-color: transparent;
  color: var(--color-text-primary);
}

.btn--ghost:hover:not(:disabled) {
  background-color: var(--color-bg-tertiary);
}

.btn--danger {
  background-color: var(--color-error);
  color: var(--color-text-inverse);
}

.btn--danger:hover:not(:disabled) {
  background-color: var(--color-error-dark);
}

.btn--success {
  background-color: var(--color-success);
  color: var(--color-text-inverse);
}

.btn--success:hover:not(:disabled) {
  background-color: var(--color-success-dark);
}

/* Button Sizes */
.btn--sm {
  padding: var(--spacing-1) var(--spacing-3);
  font-size: var(--font-size-xs);
}

.btn--lg {
  padding: var(--spacing-3) var(--spacing-6);
  font-size: var(--font-size-base);
}

.btn--xl {
  padding: var(--spacing-4) var(--spacing-8);
  font-size: var(--font-size-lg);
}

/* Icon Button */
.btn--icon {
  padding: var(--spacing-2);
  aspect-ratio: 1;
}

/* Full Width Button */
.btn--block {
  width: 100%;
}

/* ========================================
 * CARD COMPONENTS
 * ======================================== */

.card {
  background-color: var(--color-bg-primary);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
  overflow: hidden;
  transition: box-shadow var(--transition-fast);
}

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

.card__header {
  padding: var(--spacing-4) var(--spacing-6);
  border-bottom: 1px solid var(--color-border-light);
}

.card__title {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
  margin: 0;
}

.card__subtitle {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  margin-top: var(--spacing-1);
}

.card__body {
  padding: var(--spacing-6);
}

.card__footer {
  padding: var(--spacing-4) var(--spacing-6);
  border-top: 1px solid var(--color-border-light);
  background-color: var(--color-bg-secondary);
}

/* Card Variants */
.card--flat {
  box-shadow: none;
  border: 1px solid var(--color-border-light);
}

.card--flat:hover {
  box-shadow: none;
}

.card--interactive {
  cursor: pointer;
}

.card--interactive:hover {
  transform: translateY(-2px);
}

/* ========================================
 * COURSE CARD (특화 카드)
 * ======================================== */

.course-card {
  display: flex;
  flex-direction: column;
  height: 100%;
}

.course-card__thumbnail {
  position: relative;
  aspect-ratio: 16 / 9;
  background-color: var(--color-bg-tertiary);
  overflow: hidden;
}

.course-card__thumbnail img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.course-card__content {
  flex: 1;
  padding: var(--spacing-4);
}

.course-card__category {
  display: inline-block;
  padding: var(--spacing-1) var(--spacing-2);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-medium);
  color: var(--color-white);
  background-color: var(--color-primary);
  border-radius: var(--radius-sm);
  margin-bottom: var(--spacing-2);
}

.course-card__title {
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
  margin: 0 0 var(--spacing-2);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.course-card__meta {
  display: flex;
  align-items: center;
  gap: var(--spacing-4);
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
}

.course-card__progress {
  padding: var(--spacing-3) var(--spacing-4);
  border-top: 1px solid var(--color-border-light);
}

/* 접근성 뱃지 (회원전용/공개) */
.course-card__access-badge {
  position: absolute;
  top: var(--spacing-2);
  left: var(--spacing-2);
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-1);
  padding: var(--spacing-1) var(--spacing-2);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-medium);
  border-radius: var(--radius-sm);
  backdrop-filter: blur(4px);
}

.course-card__access-badge--members {
  background: rgba(234, 67, 53, 0.9);
  color: white;
}

.course-card__access-badge--public {
  background: rgba(34, 168, 98, 0.9);
  color: white;
}

/* ========================================
 * FORM COMPONENTS
 * ======================================== */

/* Form Group */
.form-group {
  margin-bottom: var(--spacing-4);
}

.form-label {
  display: block;
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-primary);
  margin-bottom: var(--spacing-2);
}

.form-label--required::after {
  content: '*';
  color: var(--color-error);
  margin-left: var(--spacing-1);
}

/* Input */
.form-input {
  width: 100%;
  padding: var(--spacing-2) var(--spacing-3);
  font-family: var(--font-family-sans);
  font-size: var(--font-size-base);
  color: var(--color-text-primary);
  background-color: var(--color-bg-primary);
  border: 1px solid var(--color-border-default);
  border-radius: var(--radius-md);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-input::placeholder {
  color: var(--color-text-tertiary);
}

.form-input:hover:not(:disabled) {
  border-color: var(--color-border-dark);
}

.form-input:focus {
  outline: none;
  border-color: var(--color-border-focus);
  box-shadow: 0 0 0 3px var(--color-primary-light);
}

.form-input:disabled {
  background-color: var(--color-bg-tertiary);
  cursor: not-allowed;
}

.form-input--error {
  border-color: var(--color-error);
}

.form-input--error:focus {
  box-shadow: 0 0 0 3px var(--color-error-light);
}

/* Textarea */
.form-textarea {
  min-height: 120px;
  resize: vertical;
}

/* Select */
.form-select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 20 20'%3e%3cpath stroke='%236b7280' stroke-linecap='round' stroke-linejoin='round' stroke-width='1.5' d='M6 8l4 4 4-4'/%3e%3c/svg%3e");
  background-position: right var(--spacing-3) center;
  background-repeat: no-repeat;
  background-size: 1.5em 1.5em;
  padding-right: var(--spacing-10);
}

/* Checkbox & Radio */
.form-check {
  display: flex;
  align-items: center;
  gap: var(--spacing-2);
}

.form-check-input {
  width: 1.125rem;
  height: 1.125rem;
  accent-color: var(--color-primary);
  cursor: pointer;
}

.form-check-label {
  font-size: var(--font-size-sm);
  color: var(--color-text-primary);
  cursor: pointer;
}

/* Helper Text */
.form-helper {
  font-size: var(--font-size-xs);
  color: var(--color-text-secondary);
  margin-top: var(--spacing-1);
}

.form-error {
  font-size: var(--font-size-xs);
  color: var(--color-error);
  margin-top: var(--spacing-1);
}

/* ========================================
 * NAVIGATION COMPONENTS
 * ======================================== */

/* Navigation */
.nav {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-1);
}

.nav__item {
  display: flex;
  align-items: center;
  gap: var(--spacing-3);
  padding: var(--spacing-3) var(--spacing-4);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-secondary);
  text-decoration: none;
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}

.nav__item:hover {
  color: var(--color-text-primary);
  background-color: var(--color-bg-tertiary);
}

.nav__item--active {
  color: var(--color-secondary);
  background-color: var(--color-primary-light);
}

.nav__icon {
  width: 1.25rem;
  height: 1.25rem;
  flex-shrink: 0;
}

/* Breadcrumb */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: var(--spacing-2);
  font-size: var(--font-size-sm);
}

.breadcrumb__item {
  color: var(--color-text-secondary);
  text-decoration: none;
}

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

.breadcrumb__item--current {
  color: var(--color-text-primary);
  font-weight: var(--font-weight-medium);
}

.breadcrumb__separator {
  color: var(--color-text-tertiary);
}

/* Tabs */
.tabs {
  display: flex;
  border-bottom: 1px solid var(--color-border-light);
}

.tabs__item {
  padding: var(--spacing-3) var(--spacing-4);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-secondary);
  text-decoration: none;
  border-bottom: 2px solid transparent;
  margin-bottom: -1px;
  transition: all var(--transition-fast);
}

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

.tabs__item--active {
  color: var(--color-primary);
  border-bottom-color: var(--color-primary);
}

/* ========================================
 * DRAWER COMPONENTS
 * ======================================== */

.drawer {
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  z-index: var(--z-modal);
  display: flex;
  visibility: hidden;
  opacity: 0;
  transition: visibility 0s linear 0.3s, opacity 0.3s ease;
}

.drawer.drawer--open {
  visibility: visible;
  opacity: 1;
  transition: visibility 0s linear 0s, opacity 0.3s ease;
}

.drawer__backdrop {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: rgba(0, 0, 0, 0.5);
}

.drawer__content {
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  width: 100%;
  max-width: 480px;
  background-color: var(--color-bg-primary);
  box-shadow: var(--shadow-lg);
  display: flex;
  flex-direction: column;
  transform: translateX(100%);
  transition: transform 0.3s ease;
}

.drawer--open .drawer__content {
  transform: translateX(0);
}

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

.drawer__title {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
  margin: 0;
}

.drawer__close {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  padding: 0;
  border: none;
  background: none;
  color: var(--color-text-secondary);
  cursor: pointer;
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}

.drawer__close:hover {
  background-color: var(--color-bg-tertiary);
  color: var(--color-text-primary);
}

.drawer__body {
  flex: 1;
  padding: var(--spacing-6);
  overflow-y: auto;
}

.drawer__footer {
  display: flex;
  justify-content: flex-end;
  gap: var(--spacing-3);
  padding: var(--spacing-4) var(--spacing-6);
  border-top: 1px solid var(--color-border-light);
}

/* ========================================
 * TABLE COMPONENTS
 * ======================================== */

.table-container {
  overflow-x: auto;
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-lg);
  background-color: var(--color-bg-primary);
}

.table {
  width: 100%;
  border-collapse: collapse;
}

.table th,
.table td {
  padding: var(--spacing-3) var(--spacing-4);
  text-align: left;
  border-bottom: 1px solid var(--color-border-light);
}

.table th {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-secondary);
  background-color: var(--color-bg-secondary);
  white-space: nowrap;
}

.table td {
  font-size: var(--font-size-sm);
  color: var(--color-text-primary);
}

.table tbody tr:hover {
  background-color: var(--color-bg-secondary);
}

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

/* 검색 결과 하이라이트 */
.table tbody tr.highlight-row {
  background-color: var(--color-primary-light);
  animation: highlight-pulse 0.5s ease-in-out;
}

@keyframes highlight-pulse {
  0% { background-color: var(--color-primary); }
  100% { background-color: var(--color-primary-light); }
}

/* ========================================
 * BADGE & TAG COMPONENTS
 * ======================================== */

.badge {
  display: inline-flex;
  align-items: center;
  padding: var(--spacing-1) var(--spacing-2);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-medium);
  border-radius: var(--radius-full);
}

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

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

.badge--warning {
  color: var(--color-warning-dark);
  background-color: var(--color-warning-light);
}

.badge--error {
  color: var(--color-error-dark);
  background-color: var(--color-error-light);
}

.badge--neutral {
  color: var(--color-text-secondary);
  background-color: var(--color-bg-tertiary);
}

/* ========================================
 * TOGGLE SWITCH COMPONENTS
 * ======================================== */

.toggle-switch {
  position: relative;
  display: inline-block;
  width: 44px;
  height: 24px;
  cursor: pointer;
}

.toggle-switch input {
  opacity: 0;
  width: 0;
  height: 0;
}

.toggle-switch__slider {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: var(--color-gray-300);
  border-radius: 24px;
  transition: background-color 0.2s ease;
}

.toggle-switch__slider::before {
  position: absolute;
  content: "";
  height: 18px;
  width: 18px;
  left: 3px;
  bottom: 3px;
  background-color: var(--color-white);
  border-radius: 50%;
  transition: transform 0.2s ease;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.2);
}

.toggle-switch input:checked + .toggle-switch__slider {
  background-color: var(--color-success);
}

.toggle-switch input:checked + .toggle-switch__slider::before {
  transform: translateX(20px);
}

.toggle-switch input:focus + .toggle-switch__slider {
  box-shadow: 0 0 0 2px var(--color-primary-light);
}

.toggle-switch input:disabled + .toggle-switch__slider {
  opacity: 0.5;
  cursor: not-allowed;
}

/* ========================================
 * PROGRESS COMPONENTS
 * ======================================== */

.progress {
  height: 0.5rem;
  background-color: var(--color-bg-tertiary);
  border-radius: var(--radius-full);
  overflow: hidden;
}

.progress__bar {
  height: 100%;
  background-color: var(--color-primary);
  border-radius: var(--radius-full);
  transition: width var(--transition-normal);
}

.progress--success .progress__bar {
  background-color: var(--color-success);
}

.progress--warning .progress__bar {
  background-color: var(--color-warning);
}

.progress--error .progress__bar {
  background-color: var(--color-error);
}

/* Progress with Label */
.progress-labeled {
  display: flex;
  align-items: center;
  gap: var(--spacing-3);
}

.progress-labeled .progress {
  flex: 1;
}

.progress-labeled__value {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-primary);
  min-width: 3rem;
  text-align: right;
}

/* ========================================
 * ALERT COMPONENTS
 * ======================================== */

.alert {
  display: flex;
  gap: var(--spacing-3);
  padding: var(--spacing-4);
  border-radius: var(--radius-lg);
  font-size: var(--font-size-sm);
}

.alert__icon {
  width: 1.25rem;
  height: 1.25rem;
  flex-shrink: 0;
}

.alert__content {
  flex: 1;
}

.alert__title {
  font-weight: var(--font-weight-semibold);
  margin-bottom: var(--spacing-1);
}

.alert--info {
  color: var(--color-info-dark);
  background-color: var(--color-info-light);
}

.alert--success {
  color: var(--color-success-dark);
  background-color: var(--color-success-light);
}

.alert--warning {
  color: var(--color-warning-dark);
  background-color: var(--color-warning-light);
}

.alert--error {
  color: var(--color-error-dark);
  background-color: var(--color-error-light);
}

/* ========================================
 * MODAL COMPONENTS
 * ======================================== */

.modal-backdrop {
  position: fixed;
  inset: 0;
  background-color: rgb(0 0 0 / 0.5);
  z-index: var(--z-modal-backdrop);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-4);
}

.modal {
  background-color: var(--color-bg-primary);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-xl);
  width: 100%;
  max-width: 500px;
  max-height: calc(100vh - var(--spacing-8));
  overflow: hidden;
  display: flex;
  flex-direction: column;
  z-index: var(--z-modal);
}

.modal--lg {
  max-width: 800px;
}

.modal--xl {
  max-width: 1200px;
}

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

.modal__title {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
  margin: 0;
}

.modal__close {
  padding: var(--spacing-2);
  color: var(--color-text-secondary);
  background: none;
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.modal__close:hover {
  color: var(--color-text-primary);
  background-color: var(--color-bg-tertiary);
}

.modal__body {
  padding: var(--spacing-6);
  overflow-y: auto;
}

.modal__footer {
  display: flex;
  justify-content: flex-end;
  gap: var(--spacing-3);
  padding: var(--spacing-4) var(--spacing-6);
  border-top: 1px solid var(--color-border-light);
  background-color: var(--color-bg-secondary);
}

/* ========================================
 * AVATAR COMPONENTS
 * ======================================== */

.avatar {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background-color: var(--color-primary);
  color: var(--color-white);
  font-weight: var(--font-weight-semibold);
  border-radius: var(--radius-full);
  overflow: hidden;
}

.avatar--sm {
  width: 2rem;
  height: 2rem;
  font-size: var(--font-size-xs);
}

.avatar--md {
  width: 2.5rem;
  height: 2.5rem;
  font-size: var(--font-size-sm);
}

.avatar--lg {
  width: 3rem;
  height: 3rem;
  font-size: var(--font-size-base);
}

.avatar--xl {
  width: 4rem;
  height: 4rem;
  font-size: var(--font-size-lg);
}

.avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* ========================================
 * DROPDOWN COMPONENTS
 * ======================================== */

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

.dropdown__menu {
  position: absolute;
  top: 100%;
  left: 0;
  min-width: 200px;
  background-color: var(--color-bg-primary);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-dropdown);
  z-index: var(--z-dropdown);
  padding: var(--spacing-1);
  margin-top: var(--spacing-1);
}

.dropdown__item {
  display: flex;
  align-items: center;
  gap: var(--spacing-2);
  width: 100%;
  padding: var(--spacing-2) var(--spacing-3);
  font-size: var(--font-size-sm);
  color: var(--color-text-primary);
  text-decoration: none;
  background: none;
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: background-color var(--transition-fast);
}

.dropdown__item:hover {
  background-color: var(--color-bg-tertiary);
}

.dropdown__item--danger {
  color: var(--color-error);
}

.dropdown__divider {
  height: 1px;
  background-color: var(--color-border-light);
  margin: var(--spacing-1) 0;
}

/* ========================================
 * TOOLTIP COMPONENTS
 * ======================================== */

.tooltip {
  position: relative;
}

.tooltip__content {
  position: absolute;
  bottom: 100%;
  left: 50%;
  transform: translateX(-50%);
  padding: var(--spacing-2) var(--spacing-3);
  font-size: var(--font-size-xs);
  color: var(--color-text-inverse);
  background-color: var(--color-gray-800);
  border-radius: var(--radius-md);
  white-space: nowrap;
  z-index: var(--z-tooltip);
  margin-bottom: var(--spacing-1);
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition-fast), visibility var(--transition-fast);
}

.tooltip:hover .tooltip__content {
  opacity: 1;
  visibility: visible;
}

/* ========================================
 * VIDEO PLAYER COMPONENTS
 * ======================================== */

.video-player {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 9;
  background-color: var(--color-black);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.video-player__overlay {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: rgb(0 0 0 / 0.5);
  z-index: 10;
}

.video-player__warning {
  padding: var(--spacing-4) var(--spacing-6);
  background-color: var(--color-bg-primary);
  border-radius: var(--radius-lg);
  text-align: center;
  max-width: 400px;
}

.video-player__warning-icon {
  width: 3rem;
  height: 3rem;
  color: var(--color-warning);
  margin-bottom: var(--spacing-3);
}

.video-player__warning-text {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
}

/* ========================================
 * STATISTICS COMPONENTS
 * ======================================== */

.stat-card {
  padding: var(--spacing-6);
}

.stat-card__label {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-2);
}

.stat-card__value {
  font-size: var(--font-size-3xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-text-primary);
}

.stat-card__change {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-1);
  font-size: var(--font-size-sm);
  margin-top: var(--spacing-2);
}

.stat-card__change--positive {
  color: var(--color-success);
}

.stat-card__change--negative {
  color: var(--color-error);
}

/* ========================================
 * EMPTY STATE COMPONENTS
 * ======================================== */

.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-12) var(--spacing-6);
  text-align: center;
}

.empty-state__icon {
  width: 4rem;
  height: 4rem;
  color: var(--color-text-tertiary);
  margin-bottom: var(--spacing-4);
}

.empty-state__title {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
  margin-bottom: var(--spacing-2);
}

.empty-state__description {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  max-width: 400px;
  margin-bottom: var(--spacing-6);
}

/* ========================================
 * LOADING COMPONENTS
 * ======================================== */

.spinner {
  width: 1.5rem;
  height: 1.5rem;
  border: 2px solid var(--color-border-light);
  border-top-color: var(--color-primary);
  border-radius: var(--radius-full);
  animation: spin 0.8s linear infinite;
}

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

.spinner--lg {
  width: 2rem;
  height: 2rem;
}

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

.skeleton {
  background: linear-gradient(
    90deg,
    var(--color-bg-tertiary) 25%,
    var(--color-bg-secondary) 50%,
    var(--color-bg-tertiary) 75%
  );
  background-size: 200% 100%;
  animation: skeleton-loading 1.5s infinite;
  border-radius: var(--radius-md);
}

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

/* ========================================
 * PAGINATION COMPONENTS
 * ======================================== */

.pagination {
  display: flex;
  align-items: center;
  gap: var(--spacing-1);
}

.pagination__item {
  display: flex;
  align-items: center;
  justify-content: center;
  min-width: 2rem;
  height: 2rem;
  padding: 0 var(--spacing-2);
  font-size: var(--font-size-sm);
  color: var(--color-text-primary);
  text-decoration: none;
  background-color: transparent;
  border: 1px solid transparent;
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}

.pagination__item:hover:not(:disabled) {
  background-color: var(--color-bg-tertiary);
}

.pagination__item--active {
  color: var(--color-text-inverse);
  background-color: var(--color-primary);
}

.pagination__item:disabled {
  color: var(--color-text-disabled);
  cursor: not-allowed;
}

/* ========================================
 * UTILITY CLASSES
 * ======================================== */

/* Text utilities */
.text-primary { color: var(--color-text-primary); }
.text-secondary { color: var(--color-text-secondary); }
.text-tertiary { color: var(--color-text-tertiary); }
.text-success { color: var(--color-success); }
.text-warning { color: var(--color-warning); }
.text-error { color: var(--color-error); }

/* Background utilities */
.bg-primary { background-color: var(--color-bg-primary); }
.bg-secondary { background-color: var(--color-bg-secondary); }
.bg-tertiary { background-color: var(--color-bg-tertiary); }

/* Flex utilities */
.flex { display: flex; }
.flex-col { flex-direction: column; }
.items-center { align-items: center; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }
.gap-sm { gap: var(--spacing-sm); }
.gap-md { gap: var(--spacing-md); }
.gap-lg { gap: var(--spacing-lg); }

/* Spacing utilities */
.mt-sm { margin-top: var(--spacing-sm); }
.mt-md { margin-top: var(--spacing-md); }
.mt-lg { margin-top: var(--spacing-lg); }
.mb-sm { margin-bottom: var(--spacing-sm); }
.mb-md { margin-bottom: var(--spacing-md); }
.mb-lg { margin-bottom: var(--spacing-lg); }

/* Screen reader only */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border-width: 0;
}

/* ========================================
 * PROGRESS RING (Atom)
 * 원형 진도율 표시
 * ======================================== */

.progress-ring {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.progress-ring--sm {
  width: 3rem;
  height: 3rem;
}

.progress-ring--md {
  width: 5rem;
  height: 5rem;
}

.progress-ring--lg {
  width: 8rem;
  height: 8rem;
}

.progress-ring__svg {
  transform: rotate(-90deg);
  width: 100%;
  height: 100%;
}

.progress-ring__circle-bg {
  fill: none;
  stroke: var(--color-bg-tertiary);
}

.progress-ring__circle-progress {
  fill: none;
  transition: stroke-dashoffset var(--transition-slow);
}

.progress-ring__circle-progress--primary {
  stroke: var(--color-primary);
}

.progress-ring__circle-progress--success {
  stroke: var(--color-success);
}

.progress-ring__circle-progress--warning {
  stroke: var(--color-warning);
}

.progress-ring__circle-progress--error {
  stroke: var(--color-error);
}

.progress-ring__label {
  position: absolute;
  font-weight: var(--font-weight-bold);
  color: var(--color-text-primary);
}

.progress-ring--sm .progress-ring__label {
  font-size: var(--font-size-xs);
}

.progress-ring--md .progress-ring__label {
  font-size: var(--font-size-base);
}

.progress-ring--lg .progress-ring__label {
  font-size: var(--font-size-xl);
}

/* ========================================
 * VIDEO ATOM
 * 비디오 래퍼 (업로드/유튜브)
 * ======================================== */

.video-wrapper {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 9;
  background-color: var(--color-black);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.video-wrapper--youtube {
  padding-bottom: 56.25%;
  height: 0;
}

.video-wrapper__video {
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.video-wrapper__iframe {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  border: 0;
}

.video-wrapper__placeholder {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: var(--color-bg-tertiary);
  color: var(--color-text-tertiary);
}

/* ========================================
 * COUNTER ATOM
 * 애니메이션 숫자 카운터
 * ======================================== */

.counter {
  display: inline-flex;
  align-items: baseline;
  gap: var(--spacing-1);
}

.counter__prefix,
.counter__suffix {
  color: var(--color-text-secondary);
}

.counter__value {
  font-weight: var(--font-weight-bold);
  font-variant-numeric: tabular-nums;
}

.counter--sm .counter__value {
  font-size: var(--font-size-lg);
}

.counter--md .counter__value {
  font-size: var(--font-size-2xl);
}

.counter--lg .counter__value {
  font-size: var(--font-size-4xl);
}

.counter--primary .counter__value {
  color: var(--color-primary);
}

.counter--success .counter__value {
  color: var(--color-success);
}

.counter--warning .counter__value {
  color: var(--color-warning);
}

.counter--error .counter__value {
  color: var(--color-error);
}

/* ========================================
 * NOTICE BAR (Molecule)
 * 롤링 공지사항
 * ======================================== */

.notice-bar {
  display: flex;
  align-items: center;
  gap: var(--spacing-3);
  padding: var(--spacing-3) var(--spacing-4);
  background-color: var(--color-bg-secondary);
  border-bottom: 1px solid var(--color-border-light);
}

.notice-bar--primary {
  background-color: var(--color-primary-light);
  border-bottom-color: var(--color-primary);
}

.notice-bar__label {
  display: flex;
  align-items: center;
  gap: var(--spacing-2);
  padding: var(--spacing-1) var(--spacing-3);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-inverse);
  background-color: var(--color-primary);
  border-radius: var(--radius-full);
  flex-shrink: 0;
}

.notice-bar__content {
  flex: 1;
  overflow: hidden;
}

.notice-bar__scroll {
  display: flex;
  flex-direction: column;
  animation: notice-scroll 8s ease-in-out infinite;
}

.notice-bar__scroll--paused {
  animation-play-state: paused;
}

.notice-bar__item {
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.notice-bar__link {
  font-size: var(--font-size-sm);
  color: var(--color-text-primary);
  text-decoration: none;
}

.notice-bar__link:hover {
  color: var(--color-text-link);
  text-decoration: underline;
}

.notice-bar__more {
  flex-shrink: 0;
}

@keyframes notice-scroll {
  0%, 30% {
    transform: translateY(0);
  }
  35%, 65% {
    transform: translateY(-100%);
  }
  70%, 100% {
    transform: translateY(-200%);
  }
}

/* ========================================
 * LESSON ITEM (Molecule)
 * 강의 목록 아이템
 * ======================================== */

.lesson-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-3);
  padding: var(--spacing-3) var(--spacing-4);
  text-decoration: none;
  border-radius: var(--radius-md);
  transition: background-color var(--transition-fast);
}

.lesson-item:hover {
  background-color: var(--color-bg-secondary);
}

.lesson-item--current {
  background-color: var(--color-primary-light);
}

.lesson-item--locked {
  opacity: 0.5;
  cursor: not-allowed;
}

.lesson-item__number {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2rem;
  height: 2rem;
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-secondary);
  background-color: var(--color-bg-tertiary);
  border-radius: var(--radius-full);
  flex-shrink: 0;
}

.lesson-item--completed .lesson-item__number {
  color: var(--color-text-inverse);
  background-color: var(--color-success);
}

.lesson-item--current .lesson-item__number {
  color: var(--color-text-inverse);
  background-color: var(--color-primary);
}

.lesson-item__content {
  flex: 1;
  min-width: 0;
}

.lesson-item__title {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.lesson-item__meta {
  display: flex;
  align-items: center;
  gap: var(--spacing-2);
  margin-top: var(--spacing-1);
  font-size: var(--font-size-xs);
  color: var(--color-text-secondary);
}

.lesson-item__progress {
  display: flex;
  align-items: center;
  gap: var(--spacing-2);
  flex-shrink: 0;
}

.lesson-item__progress-value {
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-secondary);
}

/* ========================================
 * CHART CONTAINER (Molecule)
 * Chart.js 래퍼
 * ======================================== */

.chart-container {
  position: relative;
  width: 100%;
}

.chart-container--sm {
  height: 150px;
}

.chart-container--md {
  height: 250px;
}

.chart-container--lg {
  height: 400px;
}

.chart-container__canvas {
  width: 100% !important;
  height: 100% !important;
}

.chart-container__loading {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: var(--color-bg-secondary);
}

/* ========================================
 * PROGRESS STAT (Molecule)
 * 진도율 상세 표시
 * ======================================== */

.progress-stat {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-2);
}

.progress-stat--inline {
  flex-direction: row;
  align-items: center;
  gap: var(--spacing-4);
}

.progress-stat__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.progress-stat__label {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
}

.progress-stat__value {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
}

.progress-stat__bar {
  flex: 1;
}

.progress-stat__bar .progress {
  height: 0.5rem;
}

.progress-stat--detailed .progress-stat__bar .progress {
  height: 0.75rem;
}

.progress-stat__count {
  font-size: var(--font-size-xs);
  color: var(--color-text-tertiary);
}

/* ========================================
 * EXCEL UPLOAD (Molecule)
 * 엑셀 파일 업로드
 * ======================================== */

.excel-upload {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-4);
}

.excel-upload__dropzone {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-3);
  padding: var(--spacing-8);
  border: 2px dashed var(--color-border-default);
  border-radius: var(--radius-lg);
  background-color: var(--color-bg-secondary);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.excel-upload__dropzone:hover,
.excel-upload__dropzone--active {
  border-color: var(--color-primary);
  background-color: var(--color-primary-light);
}

.excel-upload__dropzone--error {
  border-color: var(--color-error);
  background-color: var(--color-error-light);
}

.excel-upload__icon {
  width: 3rem;
  height: 3rem;
  color: var(--color-text-tertiary);
}

.excel-upload__dropzone--active .excel-upload__icon {
  color: var(--color-primary);
}

.excel-upload__text {
  text-align: center;
}

.excel-upload__title {
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-primary);
  margin-bottom: var(--spacing-1);
}

.excel-upload__hint {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
}

.excel-upload__input {
  display: none;
}

.excel-upload__template {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-2);
  padding: var(--spacing-3);
  background-color: var(--color-bg-tertiary);
  border-radius: var(--radius-md);
}

.excel-upload__template-link {
  font-size: var(--font-size-sm);
  color: var(--color-text-link);
  text-decoration: none;
}

.excel-upload__template-link:hover {
  text-decoration: underline;
}

.excel-upload__file {
  display: flex;
  align-items: center;
  gap: var(--spacing-3);
  padding: var(--spacing-3) var(--spacing-4);
  background-color: var(--color-success-light);
  border-radius: var(--radius-md);
}

.excel-upload__file-icon {
  width: 2rem;
  height: 2rem;
  color: var(--color-success);
}

.excel-upload__file-info {
  flex: 1;
}

.excel-upload__file-name {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-primary);
}

.excel-upload__file-size {
  font-size: var(--font-size-xs);
  color: var(--color-text-secondary);
}

.excel-upload__file-remove {
  padding: var(--spacing-1);
  color: var(--color-text-secondary);
  background: none;
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
}

.excel-upload__file-remove:hover {
  color: var(--color-error);
  background-color: var(--color-error-light);
}

/* ========================================
 * CERTIFICATE BADGE (Molecule)
 * 수료증 상태 뱃지
 * ======================================== */

.certificate-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-2);
  padding: var(--spacing-2) var(--spacing-3);
  border-radius: var(--radius-md);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
}

.certificate-badge--pending {
  color: var(--color-text-secondary);
  background-color: var(--color-bg-tertiary);
}

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

.certificate-badge--completed {
  color: var(--color-success-dark);
  background-color: var(--color-success-light);
}

.certificate-badge--expired {
  color: var(--color-error-dark);
  background-color: var(--color-error-light);
}

.certificate-badge__icon {
  width: 1.25rem;
  height: 1.25rem;
}

/* ========================================
 * CATEGORY FILTER (Molecule)
 * 카테고리 필터 탭
 * ======================================== */

.category-filter {
  display: flex;
  align-items: center;
  gap: var(--spacing-2);
  padding: var(--spacing-2);
  background-color: var(--color-bg-secondary);
  border-radius: var(--radius-lg);
  overflow-x: auto;
}

.category-filter--pills {
  background-color: transparent;
  padding: 0;
  gap: var(--spacing-3);
}

.category-filter__item {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-1);
  padding: var(--spacing-2) var(--spacing-4);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-secondary);
  background-color: transparent;
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  white-space: nowrap;
  transition: all var(--transition-fast);
}

.category-filter__item:hover {
  color: var(--color-text-primary);
  background-color: var(--color-bg-tertiary);
}

.category-filter__item--active {
  color: var(--color-primary);
  background-color: var(--color-bg-primary);
  box-shadow: var(--shadow-sm);
}

.category-filter--pills .category-filter__item {
  border: 1px solid var(--color-border-default);
  border-radius: var(--radius-full);
}

.category-filter--pills .category-filter__item--active {
  color: var(--color-text-inverse);
  background-color: var(--color-primary);
  border-color: var(--color-primary);
}

.category-filter__count {
  padding: var(--spacing-1) var(--spacing-2);
  font-size: var(--font-size-xs);
  background-color: var(--color-bg-tertiary);
  border-radius: var(--radius-full);
}

.category-filter__item--active .category-filter__count {
  background-color: var(--color-primary);
  color: var(--color-white);
}

/* ========================================
 * USER PROGRESS (Molecule)
 * 사용자 진도 요약
 * ======================================== */

.user-progress {
  display: flex;
  align-items: center;
  gap: var(--spacing-4);
  padding: var(--spacing-4);
  background-color: var(--color-bg-secondary);
  border-radius: var(--radius-lg);
}

.user-progress--vertical {
  flex-direction: column;
  text-align: center;
}

.user-progress__avatar {
  flex-shrink: 0;
}

.user-progress__info {
  flex: 1;
  min-width: 0;
}

.user-progress__name {
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
  margin-bottom: var(--spacing-1);
}

.user-progress__company {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
}

.user-progress__stats {
  display: flex;
  gap: var(--spacing-4);
}

.user-progress--vertical .user-progress__stats {
  justify-content: center;
  margin-top: var(--spacing-3);
}

.user-progress__stat {
  text-align: center;
}

.user-progress__stat-value {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-text-primary);
}

.user-progress__stat-label {
  font-size: var(--font-size-xs);
  color: var(--color-text-secondary);
}

/* ========================================
 * HERO BANNER (Organism)
 * 메인 페이지 히어로 슬라이더
 * ======================================== */

.hero-banner {
  position: relative;
  width: 100%;
  overflow: hidden;
  border-radius: var(--radius-xl);
}

.hero-banner__slides {
  display: flex;
  transition: transform var(--transition-slow);
}

.hero-banner__slide {
  flex: 0 0 100%;
  min-width: 0;
}

.hero-banner__content {
  position: relative;
  display: flex;
  align-items: center;
  min-height: 400px;
  padding: var(--spacing-12) var(--spacing-8);
  background-size: cover;
  background-position: center;
}

.hero-banner__content::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(0,0,0,0.6) 0%, rgba(0,0,0,0.3) 50%, transparent 100%);
}

.hero-banner__text {
  position: relative;
  max-width: 600px;
  z-index: 1;
}

.hero-banner__subtitle {
  display: inline-block;
  padding: var(--spacing-1) var(--spacing-3);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-white);
  background-color: var(--color-primary);
  border-radius: var(--radius-full);
  margin-bottom: var(--spacing-4);
}

.hero-banner__title {
  font-size: var(--font-size-4xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-text-inverse);
  line-height: var(--line-height-tight);
  margin-bottom: var(--spacing-4);
}

.hero-banner__description {
  font-size: var(--font-size-lg);
  color: rgba(255, 255, 255, 0.8);
  margin-bottom: var(--spacing-6);
}

.hero-banner__controls {
  position: absolute;
  bottom: var(--spacing-6);
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  align-items: center;
  gap: var(--spacing-4);
  z-index: 10;
}

.hero-banner__indicators {
  display: flex;
  gap: var(--spacing-2);
}

.hero-banner__indicator {
  width: 0.75rem;
  height: 0.75rem;
  background-color: rgba(255, 255, 255, 0.5);
  border: none;
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.hero-banner__indicator--active {
  width: 2rem;
  background-color: var(--color-bg-primary);
}

.hero-banner__arrow {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  display: flex;
  align-items: center;
  justify-content: center;
  width: 3rem;
  height: 3rem;
  background-color: rgba(255, 255, 255, 0.9);
  border: none;
  border-radius: var(--radius-full);
  color: var(--color-text-primary);
  cursor: pointer;
  z-index: 10;
  transition: all var(--transition-fast);
}

.hero-banner__arrow:hover {
  background-color: var(--color-bg-primary);
  box-shadow: var(--shadow-lg);
}

.hero-banner__arrow--prev {
  left: var(--spacing-4);
}

.hero-banner__arrow--next {
  right: var(--spacing-4);
}

/* ========================================
 * COURSE CAROUSEL (Organism)
 * 강좌 카드 캐러셀
 * ======================================== */

.course-carousel {
  position: relative;
}

.course-carousel__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--spacing-6);
}

.course-carousel__title {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-text-primary);
}

.course-carousel__nav {
  display: flex;
  gap: var(--spacing-2);
}

.course-carousel__nav-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2.5rem;
  height: 2.5rem;
  background-color: var(--color-bg-primary);
  border: 1px solid var(--color-border-default);
  border-radius: var(--radius-full);
  color: var(--color-text-primary);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.course-carousel__nav-btn:hover:not(:disabled) {
  background-color: var(--color-bg-secondary);
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.course-carousel__nav-btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

.course-carousel__container {
  overflow: hidden;
}

.course-carousel__track {
  display: flex;
  gap: var(--spacing-6);
  transition: transform var(--transition-slow);
}

.course-carousel__item {
  flex: 0 0 calc(25% - var(--spacing-6) * 3 / 4);
  min-width: 0;
}

@media (max-width: 1200px) {
  .course-carousel__item {
    flex: 0 0 calc(33.333% - var(--spacing-6) * 2 / 3);
  }
}

@media (max-width: 768px) {
  .course-carousel__item {
    flex: 0 0 calc(50% - var(--spacing-6) / 2);
  }
}

@media (max-width: 480px) {
  .course-carousel__item {
    flex: 0 0 100%;
  }
}

.course-carousel__more {
  text-align: center;
  margin-top: var(--spacing-8);
}

/* ========================================
 * VIDEO PLAYER WRAPPER (Organism)
 * 비디오 플레이어 확장
 * ======================================== */

.video-player-wrapper {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-4);
}

.video-player-wrapper__main {
  position: relative;
}

.video-player-wrapper__progress-info {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--spacing-3) var(--spacing-4);
  background-color: var(--color-bg-secondary);
  border-radius: var(--radius-md);
}

.video-player-wrapper__time {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
}

.video-player-wrapper__position {
  font-size: var(--font-size-sm);
  color: var(--color-text-primary);
  font-weight: var(--font-weight-medium);
}

.video-player-wrapper__seeking-disabled {
  position: absolute;
  top: var(--spacing-2);
  right: var(--spacing-2);
  display: flex;
  align-items: center;
  gap: var(--spacing-1);
  padding: var(--spacing-1) var(--spacing-2);
  font-size: var(--font-size-xs);
  color: var(--color-warning-dark);
  background-color: var(--color-warning-light);
  border-radius: var(--radius-md);
  z-index: 20;
}

/* ========================================
 * LESSON LIST (Organism)
 * 강의 목록 패널
 * ======================================== */

.lesson-list {
  background-color: var(--color-bg-primary);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.lesson-list__header {
  display: flex;
  align-items: center;
  gap: var(--spacing-4);
  padding: var(--spacing-4);
  background-color: var(--color-bg-secondary);
  border-bottom: 1px solid var(--color-border-light);
}

.lesson-list__info {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.lesson-list__title {
  display: flex;
  align-items: center;
  gap: var(--spacing-2);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
  margin: 0;
}

.lesson-list__count {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
}

.lesson-list__progress {
  width: 120px;
}

.lesson-list__toggle {
  padding: var(--spacing-2);
  background: none;
  border: none;
  color: var(--color-text-secondary);
  cursor: pointer;
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}

.lesson-list__toggle:hover {
  background-color: var(--color-bg-tertiary);
  color: var(--color-text-primary);
}

.lesson-list__content {
  max-height: 500px;
  overflow-y: auto;
}

.lesson-list__items {
  list-style: none;
  padding: 0;
  margin: 0;
}

.lesson-list__item {
  border-bottom: 1px solid var(--color-border-light);
}

.lesson-list__item:last-child {
  border-bottom: none;
}

/* ========================================
 * PROGRESS DASHBOARD (Organism)
 * 3단계 진도율 대시보드
 * ======================================== */

.progress-dashboard {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-8);
}

.progress-dashboard--compact {
  gap: var(--spacing-4);
}

.progress-dashboard__overview {
  display: flex;
  align-items: center;
  gap: var(--spacing-8);
  padding: var(--spacing-6);
  background-color: var(--color-bg-secondary);
  border-radius: var(--radius-xl);
}

.progress-dashboard--compact .progress-dashboard__overview {
  gap: var(--spacing-4);
  padding: var(--spacing-4);
}

.progress-dashboard__chart {
  flex-shrink: 0;
}

.progress-dashboard__summary {
  flex: 1;
}

.progress-dashboard__title {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
  margin: 0 0 var(--spacing-4);
}

.progress-dashboard__stats {
  display: flex;
  gap: var(--spacing-6);
}

.progress-dashboard__stat {
  text-align: center;
}

.progress-dashboard__stat-value {
  display: block;
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-text-primary);
}

.progress-dashboard__stat--success .progress-dashboard__stat-value {
  color: var(--color-success);
}

.progress-dashboard__stat--primary .progress-dashboard__stat-value {
  color: var(--color-primary);
}

.progress-dashboard__stat-label {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
}

.progress-dashboard__courses {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-4);
}

.progress-dashboard__section-title {
  display: flex;
  align-items: center;
  gap: var(--spacing-2);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
  margin: 0;
}

.progress-dashboard__course-list {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-4);
}

.progress-dashboard__course-item {
  padding: var(--spacing-4);
  background-color: var(--color-bg-primary);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-lg);
}

.progress-dashboard__course-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  margin-bottom: var(--spacing-3);
}

.progress-dashboard__course-info {
  flex: 1;
}

.progress-dashboard__course-category {
  margin-bottom: var(--spacing-1);
}

.progress-dashboard__course-title {
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-primary);
  margin: 0;
}

.progress-dashboard__course-progress {
  display: flex;
  align-items: center;
  gap: var(--spacing-2);
}

.progress-dashboard__course-percent {
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-bold);
  color: var(--color-text-primary);
}

.progress-dashboard__lessons {
  margin-top: var(--spacing-4);
  border-top: 1px solid var(--color-border-light);
  padding-top: var(--spacing-3);
}

.progress-dashboard__lessons-toggle {
  display: flex;
  align-items: center;
  gap: var(--spacing-2);
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  cursor: pointer;
  list-style: none;
}

.progress-dashboard__lessons-toggle::-webkit-details-marker {
  display: none;
}

.progress-dashboard__lessons-toggle i {
  transition: transform var(--transition-fast);
}

.progress-dashboard__lessons[open] .progress-dashboard__lessons-toggle i {
  transform: rotate(90deg);
}

.progress-dashboard__lesson-list {
  list-style: none;
  padding: 0;
  margin: var(--spacing-3) 0 0;
}

.progress-dashboard__lesson-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-3);
  padding: var(--spacing-2) 0;
  font-size: var(--font-size-sm);
}

.progress-dashboard__lesson-number {
  width: 1.5rem;
  text-align: center;
  color: var(--color-text-tertiary);
}

.progress-dashboard__lesson-title {
  flex: 1;
  color: var(--color-text-primary);
}

.progress-dashboard__lesson-progress {
  color: var(--color-text-secondary);
}

/* ========================================
 * EMPLOYEE TABLE (Organism)
 * 직원 관리 테이블
 * ======================================== */

.employee-table {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-4);
}

.employee-table__bulk-actions {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--spacing-3) var(--spacing-4);
  background-color: var(--color-primary-light);
  border-radius: var(--radius-md);
}

.employee-table__selected-count {
  font-size: var(--font-size-sm);
  color: var(--color-text-primary);
}

.employee-table__bulk-buttons {
  display: flex;
  gap: var(--spacing-2);
}

.employee-table__table {
  width: 100%;
}

.employee-table__checkbox-col {
  width: 3rem;
}

.employee-table__actions-col {
  width: 8rem;
}

.employee-table__user {
  display: flex;
  align-items: center;
  gap: var(--spacing-3);
}

.employee-table__progress {
  display: flex;
  align-items: center;
  gap: var(--spacing-2);
}

.employee-table__progress .progress {
  width: 80px;
}

.employee-table__actions {
  display: flex;
  gap: var(--spacing-1);
}

/* ========================================
 * CERTIFICATE CARD (Organism)
 * 수료증 카드
 * ======================================== */

.certificate-card {
  background-color: var(--color-bg-primary);
  border: 1px solid var(--color-border-light);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.certificate-card__header {
  display: flex;
  align-items: center;
  gap: var(--spacing-4);
  padding: var(--spacing-4);
  background-color: var(--color-bg-secondary);
  border-bottom: 1px solid var(--color-border-light);
}

.certificate-card__icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 3rem;
  height: 3rem;
  background-color: var(--color-success-light);
  color: var(--color-success);
  border-radius: var(--radius-lg);
  font-size: var(--font-size-xl);
}

.certificate-card__info {
  flex: 1;
}

.certificate-card__course-title {
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
  margin: 0 0 var(--spacing-1);
}

.certificate-card__body {
  padding: var(--spacing-4);
}

.certificate-card__details {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--spacing-3);
  margin: 0;
}

.certificate-card__detail {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-1);
}

.certificate-card__detail dt {
  font-size: var(--font-size-xs);
  color: var(--color-text-secondary);
}

.certificate-card__detail dd {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-primary);
  margin: 0;
}

.certificate-card__actions {
  display: flex;
  gap: var(--spacing-3);
  padding: var(--spacing-4);
  border-top: 1px solid var(--color-border-light);
}

/* Certificate Preview/Print */
.certificate {
  max-width: 800px;
  margin: 0 auto;
  background-color: var(--color-bg-primary);
}

.certificate--preview {
  padding: var(--spacing-4);
}

.certificate--print {
  padding: 0;
}

.certificate__border {
  border: 3px double var(--color-primary);
  padding: var(--spacing-8);
}

.certificate__content {
  text-align: center;
}

.certificate__header {
  margin-bottom: var(--spacing-8);
}

.certificate__logo {
  margin-bottom: var(--spacing-4);
}

.certificate__logo-img {
  height: 3rem;
}

.certificate__title {
  font-size: var(--font-size-3xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-text-primary);
  margin: 0 0 var(--spacing-2);
  letter-spacing: 0.5em;
}

.certificate__subtitle {
  font-size: var(--font-size-lg);
  color: var(--color-text-secondary);
  margin: 0;
}

.certificate__body {
  margin-bottom: var(--spacing-8);
}

.certificate__recipient {
  margin: 0 0 var(--spacing-6);
}

.certificate__recipient-name {
  display: block;
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-text-primary);
  margin-bottom: var(--spacing-1);
}

.certificate__recipient-company {
  font-size: var(--font-size-base);
  color: var(--color-text-secondary);
}

.certificate__description {
  font-size: var(--font-size-lg);
  color: var(--color-text-primary);
  line-height: var(--line-height-relaxed);
  margin: 0 0 var(--spacing-6);
}

.certificate__details {
  display: inline-flex;
  flex-direction: column;
  gap: var(--spacing-2);
  text-align: left;
  margin: 0;
  padding: var(--spacing-4);
  background-color: var(--color-bg-secondary);
  border-radius: var(--radius-md);
}

.certificate__detail {
  display: flex;
  gap: var(--spacing-4);
}

.certificate__detail dt {
  width: 5rem;
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
}

.certificate__detail dd {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-primary);
  margin: 0;
}

.certificate__footer {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  padding-top: var(--spacing-8);
  border-top: 1px solid var(--color-border-light);
}

.certificate__date {
  font-size: var(--font-size-base);
  color: var(--color-text-secondary);
}

.certificate__issuer {
  text-align: center;
}

.certificate__issuer-name {
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
  margin: 0 0 var(--spacing-2);
}

.certificate__stamp {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 4rem;
  height: 4rem;
  color: var(--color-primary);
  border: 2px solid var(--color-primary);
  border-radius: var(--radius-full);
  font-size: var(--font-size-2xl);
}

.certificate__number {
  margin-top: var(--spacing-8);
  font-size: var(--font-size-sm);
  color: var(--color-text-tertiary);
}

/* ========================================
 * STAT GRID (Organism)
 * 통계 카드 그리드
 * ======================================== */

.stat-grid {
  display: grid;
  grid-template-columns: repeat(var(--stat-columns, 4), 1fr);
  gap: var(--spacing-6);
}

@media (max-width: 1200px) {
  .stat-grid {
    grid-template-columns: repeat(min(var(--stat-columns, 4), 3), 1fr);
  }
}

@media (max-width: 768px) {
  .stat-grid {
    grid-template-columns: repeat(min(var(--stat-columns, 4), 2), 1fr);
  }
}

@media (max-width: 480px) {
  .stat-grid {
    grid-template-columns: 1fr;
  }
}

.stat-grid--compact {
  gap: var(--spacing-4);
}

.stat-grid__item {
  padding: var(--spacing-5);
}

.stat-grid--compact .stat-grid__item {
  padding: var(--spacing-4);
}

.stat-grid__content {
  display: flex;
  gap: var(--spacing-4);
}

.stat-grid__icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 3rem;
  height: 3rem;
  border-radius: var(--radius-lg);
  font-size: var(--font-size-xl);
  flex-shrink: 0;
}

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

.stat-grid__icon--success {
  color: var(--color-success);
  background-color: var(--color-success-light);
}

.stat-grid__icon--warning {
  color: var(--color-warning);
  background-color: var(--color-warning-light);
}

.stat-grid__icon--error {
  color: var(--color-error);
  background-color: var(--color-error-light);
}

.stat-grid__info {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-1);
}

.stat-grid__label {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
}

.stat-grid__value {
  font-size: var(--font-size-2xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-text-primary);
}

.stat-grid--compact .stat-grid__value {
  font-size: var(--font-size-xl);
}

.stat-grid__change {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-1);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-medium);
}

.stat-grid__change--positive {
  color: var(--color-success);
}

.stat-grid__change--negative {
  color: var(--color-error);
}

.stat-grid__change--neutral {
  color: var(--color-text-tertiary);
}

.stat-grid__description {
  font-size: var(--font-size-xs);
  color: var(--color-text-tertiary);
}

.stat-grid__chart {
  margin-top: var(--spacing-4);
  padding-top: var(--spacing-4);
  border-top: 1px solid var(--color-border-light);
}

/* ========================================
 * MULTI-SELECT COMPONENTS
 * ======================================== */

.multi-select {
  position: relative;
}

.multi-select__trigger {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--spacing-2);
  min-height: 42px;
  padding: var(--spacing-2) var(--spacing-3);
  padding-right: var(--spacing-8);
  background: var(--color-bg-primary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: border-color var(--transition-fast);
}

.multi-select__trigger:hover {
  border-color: var(--color-border-dark);
}

.multi-select__trigger:focus-within {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(201, 169, 98, 0.1);
}

.multi-select__selected {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-1);
}

.multi-select__placeholder {
  color: var(--color-text-tertiary);
  font-size: var(--font-size-sm);
}

.multi-select__chevron {
  position: absolute;
  right: var(--spacing-3);
  top: 50%;
  transform: translateY(-50%);
  color: var(--color-text-tertiary);
  pointer-events: none;
}

/* Tags (Pills) */
.multi-select__tag {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-1);
  padding: var(--spacing-1) var(--spacing-2);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-medium);
  border-radius: 9999px;
  white-space: nowrap;
}

.multi-select__tag--active {
  background: rgba(34, 197, 94, 0.1);
  color: var(--color-success);
  border: 1px solid rgba(34, 197, 94, 0.3);
}

.multi-select__tag--inactive {
  background: var(--color-bg-tertiary);
  color: var(--color-text-secondary);
  border: 1px solid var(--color-border);
}

.multi-select__tag-remove {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 14px;
  height: 14px;
  padding: 0;
  margin-left: var(--spacing-1);
  background: none;
  border: none;
  border-radius: 50%;
  cursor: pointer;
  color: inherit;
  opacity: 0.7;
  transition: opacity var(--transition-fast), background var(--transition-fast);
}

.multi-select__tag-remove:hover {
  opacity: 1;
  background: rgba(0, 0, 0, 0.1);
}

.multi-select__tag-remove i {
  font-size: 10px;
}

/* Dropdown */
.multi-select__dropdown {
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  margin-top: var(--spacing-1);
  background: var(--color-bg-primary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.15);
  z-index: 50;
  max-height: 300px;
  display: flex;
  flex-direction: column;
}

.multi-select__dropdown.hidden {
  display: none !important;
}

.multi-select__search {
  display: flex;
  align-items: center;
  gap: var(--spacing-2);
  padding: var(--spacing-3);
  border-bottom: 1px solid var(--color-border-light);
}

.multi-select__search i {
  color: var(--color-text-tertiary);
}

.multi-select__search input {
  flex: 1;
  border: none;
  outline: none;
  font-size: var(--font-size-sm);
  background: transparent;
}

.multi-select__search input::placeholder {
  color: var(--color-text-tertiary);
}

.multi-select__options {
  overflow-y: auto;
  max-height: 220px;
  padding: var(--spacing-2) 0;
}

/* Checkbox Items */
.multi-select__item {
  display: flex;
  align-items: center;
  gap: var(--spacing-3);
  padding: var(--spacing-2) var(--spacing-3);
  cursor: pointer;
  transition: background var(--transition-fast);
}

.multi-select__item:hover {
  background: var(--color-bg-secondary);
}

.multi-select__item input[type="checkbox"] {
  display: none;
}

.multi-select__checkbox {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 18px;
  height: 18px;
  border: 2px solid var(--color-border);
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
  flex-shrink: 0;
}

.multi-select__item input[type="checkbox"]:checked + .multi-select__checkbox {
  background: var(--color-primary);
  border-color: var(--color-primary);
}

.multi-select__item input[type="checkbox"]:checked + .multi-select__checkbox::after {
  content: "";
  display: block;
  width: 5px;
  height: 9px;
  border: solid white;
  border-width: 0 2px 2px 0;
  transform: rotate(45deg);
  margin-top: -2px;
}

.multi-select__item-label {
  font-size: var(--font-size-sm);
  color: var(--color-text-primary);
}

.multi-select__status {
  font-size: var(--font-size-xs);
  margin-right: var(--spacing-1);
}

.multi-select__status--active {
  color: var(--color-success);
}

.multi-select__status--inactive {
  color: var(--color-text-tertiary);
}

/* ========================================
 * PAGINATION (Pagy)
 * ======================================== */

.pagy-nav,
.pagy.nav {
  display: flex;
  align-items: center;
  gap: var(--spacing-1);
}

.pagy-nav a,
.pagy-nav span,
.pagy.nav a,
.pagy.nav span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 36px;
  height: 36px;
  padding: 0 var(--spacing-3);
  border-radius: var(--radius-md);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  text-decoration: none;
  transition: all var(--transition-fast);
}

.pagy-nav a,
.pagy.nav a {
  color: var(--color-text-secondary);
  background: var(--color-bg-primary);
  border: 1px solid var(--color-border);
}

.pagy-nav a:hover,
.pagy.nav a:hover {
  background: var(--color-bg-secondary);
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.pagy-nav .current,
.pagy.nav .current {
  background: var(--color-primary);
  color: white;
  border: 1px solid var(--color-primary);
}

.pagy-nav .disabled,
.pagy.nav .disabled {
  color: var(--color-text-tertiary);
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  cursor: not-allowed;
  opacity: 0.5;
}

.pagy-nav .gap,
.pagy.nav .gap {
  color: var(--color-text-tertiary);
  border: none;
  background: none;
}

/* ========================================
 * FLASH MESSAGES
 * ======================================== */

.flash {
  position: fixed;
  top: var(--spacing-4);
  left: 0;
  right: 0;
  margin: 0 auto;
  z-index: 99999;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-3);
  padding: var(--spacing-4) var(--spacing-6);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-xl);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  animation: flashSlideInOut 4s ease-out forwards;
  max-width: calc(100% - 32px);
  width: fit-content;
  pointer-events: auto;
  box-sizing: border-box;
}

@keyframes flashSlideInOut {
  0% {
    opacity: 0;
    transform: translateY(-20px);
  }
  7% {
    opacity: 1;
    transform: translateY(0);
  }
  85% {
    opacity: 1;
    transform: translateY(0);
  }
  100% {
    opacity: 0;
    transform: translateY(-20px);
    visibility: hidden;
  }
}

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

.flash-alert {
  background: var(--color-error);
  color: white;
}

.flash-close {
  background: none;
  border: none;
  color: inherit;
  cursor: pointer;
  padding: var(--spacing-1);
  margin-left: var(--spacing-2);
  opacity: 0.8;
  transition: opacity var(--transition-fast);
}

.flash-close:hover {
  opacity: 1;
}

.flash i {
  font-size: 1.25rem;
}

/* ========================================
 * CUSTOM VIDEO PLAYER
 * ======================================== */

/* 플레이어 래퍼 */
.custom-player-wrapper {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: #000;
}

.custom-player-wrapper .youtube-player-wrapper {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none; /* iframe 직접 클릭 방지 */
}

.custom-player-wrapper .youtube-player-wrapper iframe {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  border: none;
}

/* 오버레이 (클릭 영역) */
.custom-player-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: calc(100% - 70px); /* 컨트롤바 높이 제외 */
  cursor: pointer;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* 중앙 재생 버튼 */
.custom-player-center-play {
  width: 80px;
  height: 80px;
  background: rgba(0, 0, 0, 0.7);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform 0.2s, background 0.2s;
}

.custom-player-center-play i {
  font-size: 2.5rem;
  color: white;
  margin-left: 4px; /* 재생 아이콘 시각적 중앙 정렬 */
}

.custom-player-overlay:hover .custom-player-center-play {
  transform: scale(1.1);
  background: rgba(0, 0, 0, 0.85);
}

/* 컨트롤바 */
.custom-player-controls {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  background: linear-gradient(transparent, rgba(0, 0, 0, 0.9));
  padding: var(--spacing-3) var(--spacing-4);
  z-index: 20;
  opacity: 0;
  transition: opacity 0.3s ease;
}

.custom-player-controls.visible,
.custom-player-wrapper:hover .custom-player-controls {
  opacity: 1;
}

/* 프로그레스바 */
.custom-player-progress {
  position: relative;
  height: 4px;
  background: rgba(255, 255, 255, 0.3);
  border-radius: 2px;
  cursor: pointer;
  margin-bottom: var(--spacing-3);
  transition: height 0.2s;
}

.custom-player-progress:hover {
  height: 6px;
}

.custom-player-progress__buffered {
  position: absolute;
  top: 0;
  left: 0;
  height: 100%;
  background: rgba(255, 255, 255, 0.4);
  border-radius: 2px;
  width: 0;
  transition: width 0.1s;
}

.custom-player-progress__played {
  position: absolute;
  top: 0;
  left: 0;
  height: 100%;
  background: var(--color-primary);
  border-radius: 2px;
  width: 0;
  transition: width 0.1s;
}

.custom-player-progress__handle {
  position: absolute;
  top: 50%;
  left: 0;
  width: 14px;
  height: 14px;
  background: var(--color-primary);
  border-radius: 50%;
  transform: translate(-50%, -50%) scale(0);
  transition: transform 0.2s;
  box-shadow: 0 0 4px rgba(0, 0, 0, 0.5);
}

.custom-player-progress:hover .custom-player-progress__handle,
.custom-player-controls.visible .custom-player-progress__handle {
  transform: translate(-50%, -50%) scale(1);
}

/* 컨트롤 버튼 행 */
.custom-player-controls__row {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.custom-player-controls__left,
.custom-player-controls__right {
  display: flex;
  align-items: center;
  gap: var(--spacing-2);
}

/* 컨트롤 버튼 */
.custom-player-btn {
  width: 40px;
  height: 40px;
  background: transparent;
  border: none;
  border-radius: var(--radius-md);
  color: white;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.2s;
}

.custom-player-btn:hover {
  background: rgba(255, 255, 255, 0.15);
}

.custom-player-btn i {
  font-size: 1.5rem;
}

/* 볼륨 컨트롤 */
.custom-player-volume {
  display: flex;
  align-items: center;
  gap: 0;
}

.custom-player-volume__slider {
  width: 0;
  overflow: hidden;
  transition: width 0.2s;
}

.custom-player-volume:hover .custom-player-volume__slider {
  width: 80px;
  padding-left: var(--spacing-2);
}

.custom-player-volume__slider input[type="range"] {
  width: 70px;
  height: 4px;
  -webkit-appearance: none;
  appearance: none;
  background: rgba(255, 255, 255, 0.3);
  border-radius: 2px;
  cursor: pointer;
}

.custom-player-volume__slider input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 12px;
  height: 12px;
  background: white;
  border-radius: 50%;
  cursor: pointer;
}

.custom-player-volume__slider input[type="range"]::-moz-range-thumb {
  width: 12px;
  height: 12px;
  background: white;
  border-radius: 50%;
  cursor: pointer;
  border: none;
}

/* 시간 표시 */
.custom-player-time {
  display: flex;
  align-items: center;
  gap: var(--spacing-1);
  font-size: var(--font-size-sm);
  color: white;
  font-variant-numeric: tabular-nums;
  min-width: 90px;
}

.custom-player-time__separator {
  color: rgba(255, 255, 255, 0.5);
}

/* 전체화면 스타일 */
.custom-player-wrapper:fullscreen {
  width: 100vw;
  height: 100vh;
}

.custom-player-wrapper:fullscreen .custom-player-overlay {
  height: calc(100% - 80px);
}

.custom-player-wrapper:fullscreen .custom-player-controls {
  padding: var(--spacing-4) var(--spacing-6);
}

.custom-player-wrapper:fullscreen .custom-player-center-play {
  width: 100px;
  height: 100px;
}

.custom-player-wrapper:fullscreen .custom-player-center-play i {
  font-size: 3rem;
}

/* 반응형 - 모바일 */
@media (max-width: 640px) {
  .custom-player-controls {
    padding: var(--spacing-2) var(--spacing-3);
  }

  .custom-player-btn {
    width: 36px;
    height: 36px;
  }

  .custom-player-btn i {
    font-size: 1.25rem;
  }

  .custom-player-center-play {
    width: 60px;
    height: 60px;
  }

  .custom-player-center-play i {
    font-size: 2rem;
  }

  .custom-player-time {
    font-size: var(--font-size-xs);
    min-width: 70px;
  }

  .custom-player-volume:hover .custom-player-volume__slider {
    width: 60px;
  }

  .custom-player-volume__slider input[type="range"] {
    width: 50px;
  }
}