/**
 * 레이아웃 스타일
 */

.app-wrapper {
  display: flex;
  height: 100vh;
  width: 100%;
  overflow: hidden;
}

/* ========== 메인 컨텐츠 래퍼 (사이드바 + 콘텐츠) ========== */
.main-wrapper {
  display: flex;
  flex: 1;
  overflow: hidden;
}

.content-area {
  flex: 1;
  margin-left: var(--sidebar-width);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  background: var(--bg-secondary);
  transition: margin-left var(--transition-medium);
}

.sidebar.collapsed ~ .content-area {
  margin-left: var(--sidebar-collapsed-width);
}

.content-container {
  flex: 1;
  overflow-y: auto;
  padding: 0;
}

.content-inner {
  max-width: 100%;
  margin: 0;
  height: 100%;
}

/* 카드 */
.card {
  background: var(--bg-primary);
  border-radius: var(--radius-xl);
  border: 1px solid var(--border-light);
  box-shadow: var(--shadow-sm);
  padding: var(--spacing-6);
  transition: box-shadow var(--transition-base);
}

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

/* 그리드 */
.grid {
  display: grid;
  gap: var(--spacing-6);
}

.grid-cols-2 { grid-template-columns: repeat(2, 1fr); }
.grid-cols-3 { grid-template-columns: repeat(3, 1fr); }
.grid-cols-4 { grid-template-columns: repeat(4, 1fr); }

/* 반응형 */
@media (max-width: 768px) {
  .content-area {
    margin-left: 0;
  }
  
  .content-container {
    padding: var(--spacing-4);
  }
  
  .grid-cols-2,
  .grid-cols-3,
  .grid-cols-4 {
    grid-template-columns: 1fr;
  }
}

/* ================================================
   페이지 헤더 네비게이션 (브레드크럼)
   ================================================ */

.page-header-nav {
  padding: 0.5rem 2rem;
  background: var(--bg-primary);
  border-bottom: 1px solid var(--border-light);
  margin-bottom: 0rem;
}

/* ================================================
   Breadcrumb 스타일
   ================================================ */

.page-breadcrumb {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 1.25rem;
  font-weight: 700;
}

.breadcrumb-separator {
  font-size: 1rem;
  color: var(--text-tertiary);
}

.breadcrumb-main-static {
  display: flex;
  align-items: center;
  color: var(--text-primary);
  padding: 0.375rem 0.5rem;
  border-radius: 6px;
  font-size: 1.25rem;
  font-weight: 700;
}

.breadcrumb-main,
.breadcrumb-sub {
  position: relative;
  display: flex;
  align-items: center;
  gap: 0.375rem;
  color: var(--text-primary);
  cursor: pointer;
  padding: 0.375rem 0.5rem;
  border-radius: 6px;
  transition: all 0.15s ease;
}

.breadcrumb-main:hover,
.breadcrumb-sub:hover {
  background: var(--color-slate-50);
}

.breadcrumb-arrow {
  font-size: 0.875rem;
  color: var(--text-tertiary);
  transition: transform 0.2s ease;
}

.breadcrumb-main:hover .breadcrumb-arrow,
.breadcrumb-sub:hover .breadcrumb-arrow {
  transform: rotate(180deg);
}

/* ================================================
   드롭다운 메뉴
   ================================================ */

.breadcrumb-dropdown {
  position: absolute;
  top: 100%;
  left: 0;
  margin-top: 0.5rem;
  min-width: 220px;
  background: var(--bg-secondary);
  border: 1px solid var(--border-light);
  border-radius: 8px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
  z-index: 1000;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-10px);
  transition: all 0.2s ease;
  overflow: hidden;
}

.breadcrumb-main:hover .breadcrumb-dropdown,
.breadcrumb-sub:hover .breadcrumb-dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

/* 드롭다운 섹션 */
.dropdown-section {
  padding: 0.5rem 0;
  border-bottom: 1px solid var(--border-light);
}

.dropdown-section:last-child {
  border-bottom: none;
}

.dropdown-section-title {
  padding: 0.5rem 1rem;
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--text-tertiary);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

/* 드롭다운 아이템 */
.dropdown-item {
  display: block;
  padding: 0.625rem 1rem;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-primary);
  text-decoration: none;
  transition: all 0.15s ease;
  cursor: pointer;
}

.dropdown-item:hover {
  background: var(--color-slate-50);
  color: var(--color-primary);
  padding-left: 1.25rem;
}

.dropdown-item.active {
  background: var(--color-info-light);
  color: var(--color-primary-dark);
  font-weight: 700;
}

.dropdown-item.active::before {
  content: '●';
  margin-right: 0.5rem;
  font-size: 0.5rem;
  vertical-align: middle;
}

/* ==============================
   다크모드
   ============================== */

[data-theme="dark"] .breadcrumb-dropdown {
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.4);
}
[data-theme="dark"] .dropdown-item.active {
  background: var(--color-info-light);
  color: var(--color-primary-lighter);
}

/* ── 앱 오류/로딩 상태 화면 ── */
.app-error-container {
  text-align: center;
  padding: 3rem;
  color: var(--color-error);
}
.app-error-sub {
  color: var(--text-tertiary);
  margin-top: 0.5rem;
}
.app-page-error {
  text-align: center;
  padding: 4rem 2rem;
  color: var(--text-secondary);
}
.app-page-error-msg {
  color: var(--text-tertiary);
}
.app-page-error-hint {
  color: var(--text-tertiary);
  font-size: 0.875rem;
  margin-top: 0.5rem;
}
.app-reload-btn {
  margin-top: 1rem;
  padding: 0.5rem 1rem;
  background: var(--color-primary);
  color: var(--color-white);
  border: none;
  border-radius: 0.5rem;
  cursor: pointer;
}
.app-reload-btn:hover {
  background: var(--color-primary-dark, #1d4ed8);
}
.app-wip {
  color: var(--text-tertiary);
  text-align: center;
  padding: 2rem;
}
[data-theme="dark"] .app-reload-btn {
  background: var(--color-primary);
  color: var(--color-white);
}