/* ============================================================
   Layout - App container, Sidebar, Header, Navigation
   ============================================================ */

.app-container {
  display: flex;
  min-height: 100vh;
  background: var(--bg);
}

/* === Sidebar === */
.sidebar {
  width: var(--sidebar-width);
  background: var(--white);
  display: flex;
  flex-direction: column;
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  z-index: 100;
  transition: width var(--transition);
}

.sidebar.manager { background: linear-gradient(180deg, #dcfce7 0%, #bbf7d0 100%); }
.sidebar.admin { background: linear-gradient(180deg, #ede9fe 0%, #ddd6fe 100%); }

.sidebar-logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-6) var(--space-5);
  border-bottom: 1px solid rgba(0,0,0,0.08);
}

.sidebar-logo .logo-icon {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-weight: 800;
  font-size: var(--text-md);
  flex-shrink: 0;
}

.sidebar.manager .logo-icon { background: var(--mg-gradient); }
.sidebar.admin .logo-icon { background: var(--ad-gradient); }

/* 로고 이미지(지큐 앱 아이콘) — 자체 배경이 있어 원형 박스에 꽉 차게 클립 */
.sidebar-logo .logo-icon { overflow: hidden; }
.sidebar-logo .logo-icon img { width: 100%; height: 100%; object-fit: cover; }

.sidebar-logo .logo-text {
  font-weight: 800;
  font-size: var(--text-xl);
  letter-spacing: -0.03em;
  color: var(--text);
}

/* 지큐 워드마크 SVG (사이드바 상단, 텍스트 대체) */
.sidebar-logo .logo-wordmark {
  display: block;
  width: auto;
  height: 24px;
  margin-bottom: 2px;
}

.sidebar-logo .logo-sub {
  font-size: var(--text-xs);
  color: var(--text-muted);
  font-weight: 500;
}

/* Sidebar Navigation */
.sidebar-nav {
  flex: 1;
  padding: var(--space-4) var(--space-3);
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

.sidebar-nav .nav-item {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  border: none;
  background: none;
  cursor: pointer;
  border-radius: var(--radius-sm);
  font-size: var(--text-md);
  font-weight: 500;
  color: var(--text-secondary);
  transition: all var(--transition);
  text-align: left;
  width: 100%;
  font-family: inherit;
}

.sidebar-nav .nav-item:hover {
  background: rgba(0,0,0,0.06);
  color: var(--text);
}

.sidebar-nav .nav-item .nav-icon {
  font-size: var(--text-xl);
  width: 24px;
  text-align: center;
}

.sidebar-nav .nav-item.active.manager {
  background: rgba(22,163,74,0.15);
  color: var(--mg-primary-dark);
  font-weight: 700;
}

.sidebar-nav .nav-item.active.admin {
  background: rgba(124,58,237,0.15);
  color: var(--ad-primary-dark);
  font-weight: 700;
}

/* Sidebar Footer */
.sidebar-footer {
  padding: var(--space-4);
  border-top: 1px solid rgba(0,0,0,0.08);
}

.sidebar-user {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-bottom: var(--space-3);
}

.sidebar-user-avatar {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-weight: 800;
  font-size: var(--text-base);
  flex-shrink: 0;
}

.sidebar-user-avatar.manager { background: var(--mg-gradient); }
.sidebar-user-avatar.admin { background: var(--ad-gradient); }

.sidebar-user-info .name {
  font-weight: 700;
  font-size: var(--text-base);
  color: var(--text);
}

.sidebar-user-info .role {
  font-size: var(--text-xs);
  color: var(--text-muted);
}

.sidebar-logout {
  width: 100%;
  padding: var(--space-2);
  border: 1px solid rgba(0,0,0,0.1);
  border-radius: var(--radius-sm);
  background: rgba(255,255,255,0.5);
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--text-secondary);
  cursor: pointer;
  transition: all var(--transition);
  font-family: inherit;
}

.sidebar-logout:hover {
  background: var(--danger-light);
  color: var(--danger);
  border-color: var(--danger-border);
}

/* Sidebar Toggle Button */
.sidebar-toggle-btn {
  position: absolute;
  top: var(--space-8);
  right: -14px;
  width: 28px;
  height: 28px;
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  z-index: 101;
  color: var(--text-muted);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition);
}

.sidebar-toggle-btn:hover {
  color: var(--text);
  transform: scale(1.1);
}

/* Collapsed Sidebar */
.sidebar.collapsed { width: 72px; }
.sidebar.collapsed .logo-text-wrap,
.sidebar.collapsed .sidebar-nav .nav-item span:not(.nav-icon),
.sidebar.collapsed .sidebar-user-info,
.sidebar.collapsed .sidebar-logout { display: none; }
.sidebar.collapsed .sidebar-logo { justify-content: center; padding: var(--space-6) 0; }
.sidebar.collapsed .sidebar-nav .nav-item { justify-content: center; padding: var(--space-3) 0; }
.sidebar.collapsed .sidebar-user { justify-content: center; margin-bottom: 0; }
.sidebar.collapsed .sidebar-footer { display: flex; flex-direction: column; gap: var(--space-4); padding: var(--space-4) 0; align-items: center; }
.sidebar.collapsed .sidebar-toggle-btn { transform: rotate(180deg); right: -14px; }
.sidebar.collapsed .sidebar-toggle-btn:hover { transform: rotate(180deg) scale(1.1); }

/* === Main Content Area === */
.main-area {
  flex: 1;
  margin-left: var(--sidebar-width);
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  transition: margin-left var(--transition);
}

.sidebar.collapsed + .main-area {
  margin-left: 72px;
}

/* === Top Header === */
.app-header {
  padding: var(--space-4) var(--space-8);
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 255, 255, 0.75);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(226, 232, 240, 0.6);
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.02);
  transition: all var(--transition-fast);
}

.app-header.manager { background: var(--mg-header-bg); }
.app-header.admin { background: var(--ad-header-bg); }

.header-title h2 {
  font-size: var(--text-xl);
  font-weight: 800;
  letter-spacing: -0.025em;
}

.header-date {
  font-size: var(--text-base);
  color: var(--text-muted);
  font-weight: 500;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.header-bell, .header-action-btn {
  position: relative;
  width: 40px;
  height: 40px;
  border: 1px solid var(--border);
  background: var(--white);
  border-radius: 50%;
  cursor: pointer;
  font-size: var(--text-xl);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  transition: all var(--transition);
  font-family: inherit;
}

.header-bell:hover, .header-action-btn:hover {
  background: var(--bg-subtle);
  border-color: var(--text-muted);
  color: var(--text);
}

.header-bell .badge {
  position: absolute;
  top: -2px;
  right: -2px;
  min-width: 18px;
  height: 18px;
  padding: 0 var(--space-1);
  background: var(--danger);
  color: white;
  font-size: var(--text-xs);
  font-weight: 700;
  border-radius: 9px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 2px solid var(--white);
}

/* === Page Content === */
.page-content {
  padding: var(--space-6) var(--space-8);
}

/* Grid helpers */
.grid-2col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-5);
  align-items: stretch;
}

.grid-2col > .full-width { grid-column: 1 / -1; }

.grid-3col {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: var(--space-5);
  align-items: stretch;
}

.grid-4col {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-5);
  align-items: stretch;
}

/* Section Title */
.section-title {
  font-size: var(--text-base);
  font-weight: 700;
  margin: var(--space-6) 0 var(--space-3);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

/* Tab bar */
.tab-bar {
  display: flex;
  gap: var(--space-1);
  margin: var(--space-4) 0;
  background: var(--bg-subtle);
  padding: var(--space-1);
  border-radius: var(--radius);
  width: fit-content;
}

.tab-btn {
  padding: var(--space-2) var(--space-5);
  border-radius: var(--radius-sm);
  border: none;
  font-size: var(--text-base);
  font-weight: 600;
  cursor: pointer;
  background: transparent;
  color: var(--text-muted);
  transition: all var(--transition);
  font-family: inherit;
}

.tab-btn:hover { color: var(--text); }
.tab-btn.active.manager { background: var(--white); color: var(--mg-primary-dark); box-shadow: var(--shadow); }
.tab-btn.active.admin { background: var(--white); color: var(--ad-primary-dark); box-shadow: var(--shadow); }

/* Buttons */
.btn-primary {
  width: 100%;
  padding: var(--space-3) var(--space-5);
  border: none;
  border-radius: var(--radius-sm);
  font-size: var(--text-md);
  font-weight: 700;
  color: white;
  cursor: pointer;
  transition: all var(--transition);
  font-family: inherit;
}

.btn-primary:hover { opacity: 0.9; transform: translateY(-1px); box-shadow: var(--shadow-md); }
.btn-primary:active { transform: translateY(0); }
.btn-primary.manager { background: var(--mg-gradient); }
.btn-primary.admin { background: var(--ad-gradient); }
.btn-primary.danger { background: var(--danger); }
/* 인라인(자동 너비·고정 높이) 버튼 변형 — .btn-primary 뒤에 와야 width/padding 오버라이드됨 */
.btn-inline {
  width: auto;
  min-width: 100px;
  height: 36px;
  padding: 0 var(--space-4);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  white-space: nowrap;
}

.btn-secondary {
  padding: var(--space-2) var(--space-4);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: var(--text-base);
  font-weight: 600;
  cursor: pointer;
  background: var(--white);
  color: var(--text-secondary);
  transition: all var(--transition);
  font-family: inherit;
}

.btn-secondary:hover { background: var(--bg-subtle); border-color: var(--text-muted); }

/* Ripple Effect */
.ripple-btn { position: relative; overflow: hidden; }
.ripple-span {
  position: absolute;
  border-radius: 50%;
  transform: scale(0);
  animation: ripple 0.6s linear;
  background-color: rgba(255, 255, 255, 0.4);
  pointer-events: none;
}
.nav-item .ripple-span { background-color: rgba(0, 0, 0, 0.1); }
@keyframes ripple { to { transform: scale(4); opacity: 0; } }

/* Empty States */
.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--space-10) var(--space-5);
  text-align: center;
  background: var(--bg-subtle);
  border: 1px dashed var(--border);
  border-radius: var(--radius);
  color: var(--text-muted);
}

.empty-state .empty-icon { font-size: 32px; margin-bottom: var(--space-3); opacity: 0.5; }
.empty-state .empty-text { font-size: var(--text-md); font-weight: 700; color: var(--text-secondary); margin-bottom: var(--space-1); }
.empty-state .empty-sub { font-size: var(--text-sm); }

/* Loading state — renderLoading() 공통 자리표시자 (카드/모달 본문 안 중앙) */
.loading-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-3);
  padding: var(--space-10) var(--space-5);
  color: var(--text-muted);
  font-size: var(--text-base);
  font-weight: 500;
}
.loading-state__spinner {
  width: 32px;
  height: 32px;
  border: 3px solid var(--border);
  border-top-color: var(--ad-primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

/* Skeleton Loading */
.skeleton-wrap { display: flex; flex-direction: column; gap: var(--space-5); }
.skeleton-box {
  background: var(--bg-subtle);
  border-radius: var(--radius);
  position: relative;
  overflow: hidden;
}
.skeleton-box::after {
  content: "";
  position: absolute;
  inset: 0;
  transform: translateX(-100%);
  background-image: linear-gradient(90deg, rgba(255,255,255,0) 0, rgba(255,255,255,0.4) 20%, rgba(255,255,255,0.6) 60%, rgba(255,255,255,0));
  animation: shimmer 1.5s infinite;
}
@keyframes shimmer { 100% { transform: translateX(100%); } }

.skeleton-header { height: 40px; width: 30%; border-radius: var(--radius-sm); margin-bottom: var(--space-5); background: var(--border); }
.skeleton-card { height: 160px; width: 100%; }
.skeleton-grid { display: grid; gap: var(--space-5); grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); margin-top: var(--space-5); }
.skeleton-card-sm { height: 120px; }

/* === Responsive — 사이드바는 수동 토글(.collapsed) 유지, 콘텐츠 영역만 reflow ===
   폰 폭(<768)의 사이드바 드로어 전환은 별도 작업으로 분리. */
@media (max-width: 1024px) {
  .page-content { padding: var(--space-5); }
  .app-header { padding: var(--space-4) var(--space-5); }
  .grid-3col,
  .grid-4col { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
  .page-content { padding: var(--space-4); }
  .grid-2col,
  .grid-3col,
  .grid-4col { grid-template-columns: 1fr; }
}