/* ===== App Shell ===== */
.app-layout {
  display: flex;
  min-height: 100vh;
}

/* ===== Sidebar ===== */
.sidebar {
  width: var(--sidebar-width);
  min-height: 100vh;
  background: linear-gradient(180deg, #1e2036 0%, var(--color-sidebar-bg) 55%, #16172a 100%);
  display: flex;
  flex-direction: column;
  position: fixed;
  top: 0;
  left: 0;
  z-index: 100;
  border-right: 1px solid rgba(255,255,255,0.05);
  transition: transform var(--transition);
}

.sidebar-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 24px 22px 20px;
  border-bottom: 1px solid rgba(255,255,255,0.06);
}

.sidebar-logo-mark {
  width: 38px;
  height: 38px;
  flex-shrink: 0;
  border-radius: 11px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  background: linear-gradient(135deg, var(--color-primary) 0%, #8b7dff 100%);
  box-shadow: 0 4px 12px rgba(108, 99, 255, 0.35);
}

.sidebar-logo-mark svg { width: 21px; height: 21px; }

.sidebar-logo-text {
  font-size: 1.22rem;
  font-weight: 700;
  color: #fff;
  letter-spacing: -0.3px;
  line-height: 1.2;
}

.sidebar-logo-sub {
  font-size: 0.74rem;
  color: var(--color-sidebar-text);
  margin-top: 2px;
}

.sidebar-nav {
  flex: 1;
  padding: 14px 12px;
  display: flex;
  flex-direction: column;
  gap: 2px;
  overflow-y: auto;
}

.sidebar-section { margin-bottom: 6px; }

.sidebar-section-label {
  font-size: 0.68rem;
  font-weight: 700;
  color: #6b7396;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  padding: 14px 12px 6px;
}

.nav-item {
  position: relative;
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 13px;
  border-radius: 10px;
  color: var(--color-sidebar-text);
  font-size: 0.94rem;
  font-weight: 500;
  transition: background var(--transition), color var(--transition);
}

.nav-item:hover {
  background: rgba(255,255,255,0.055);
  color: #fff;
}

.nav-item.active {
  background: var(--color-sidebar-active-bg);
  color: var(--color-sidebar-active);
  font-weight: 600;
}

.nav-item.active::before {
  content: '';
  position: absolute;
  left: -12px;
  top: 50%;
  transform: translateY(-50%);
  width: 3px;
  height: 20px;
  border-radius: 0 3px 3px 0;
  background: var(--color-primary);
}

.nav-item .nav-icon {
  width: 22px;
  height: 22px;
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: #8891b4;
  transition: color var(--transition);
}

.nav-item .nav-icon svg { width: 19px; height: 19px; }

.nav-item:hover .nav-icon { color: #c3cae6; }
.nav-item.active .nav-icon { color: var(--color-primary); }

.nav-label { flex: 1; }

.nav-badge {
  margin-left: auto;
  min-width: 20px;
  height: 20px;
  padding: 0 6px;
  border-radius: var(--radius-full);
  background: var(--color-danger);
  color: #fff;
  font-size: 0.72rem;
  font-weight: 700;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  line-height: 1;
  box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.15);
}

.sidebar-footer {
  padding: 12px;
  border-top: 1px solid rgba(255,255,255,0.06);
}

.sidebar-footer .nav-icon svg { width: 19px; height: 19px; }

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

.page-header {
  height: var(--header-height);
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 40px;
  position: sticky;
  top: 0;
  z-index: 50;
}

.page-title {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--color-text);
  letter-spacing: -0.3px;
}

.page-header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.page-content {
  padding: 36px 48px 48px;
  flex: 1;
  width: 100%;
}

/* ===== Section Heading ===== */
.section-title {
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--color-text-3);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 16px;
}

/* ===== Grid Helpers ===== */
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.grid-auto { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 16px; }

/* ===== Empty State ===== */
.empty-state {
  text-align: center;
  padding: 48px 24px;
  color: var(--color-text-3);
}

.empty-state-icon {
  font-size: 2.5rem;
  margin-bottom: 12px;
  opacity: 0.5;
}

.empty-state-text {
  font-size: 0.9rem;
}

/* ===== 마감 임박 배너 ===== */
#deadline-banners {
  position: sticky;
  top: var(--header-height);
  z-index: 40;
  display: flex;
  flex-direction: column;
  gap: 1px;
}

.deadline-banner {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 9px 40px;
  font-size: 0.85rem;
}

.deadline-banner.banner-warn {
  background: #fef9c3;
  color: #92400e;
  border-bottom: 1px solid #fde68a;
}

.deadline-banner.banner-critical {
  background: #ffedd5;
  color: #c2410c;
  border-bottom: 1px solid #fdba74;
}

.deadline-banner.banner-overdue {
  background: #fee2e2;
  color: #b91c1c;
  border-bottom: 1px solid #fca5a5;
}

.deadline-banner-dday {
  font-weight: 800;
  font-size: 0.78rem;
  letter-spacing: 0.03em;
  min-width: 36px;
  text-align: center;
  padding: 1px 7px;
  border-radius: var(--radius-full);
  background: rgba(0,0,0,0.08);
}

.deadline-banner-label {
  flex: 1;
  font-weight: 500;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.deadline-banner-dismiss {
  margin-left: auto;
  background: none;
  border: none;
  cursor: pointer;
  font-size: 0.75rem;
  opacity: 0.5;
  padding: 2px 6px;
  border-radius: var(--radius-sm);
  transition: opacity 0.15s;
  color: inherit;
}
.deadline-banner-dismiss:hover { opacity: 1; }