:root {
  --admin-shell-sidebar: 292px;
  --admin-shell-sidebar-collapsed: 72px;
  --admin-shell-ease: cubic-bezier(0.22, 1, 0.36, 1);
  --admin-shell-duration: 0.46s;
  --admin-shell-blue: #17376e;
  --admin-shell-text: #111827;
  --admin-shell-muted: #667085;
  --admin-shell-line: #d9e1ec;
  --admin-shell-active: #eef3ff;
  --admin-shell-bg: #fbfcff;
}

.app-shell {
  --sidebar: var(--admin-shell-sidebar);
  display: flex;
  align-items: stretch;
  min-height: 100svh;
  width: 100%;
  position: relative;
}

html.is-sidebar-collapsed .app-shell,
.app-shell.is-sidebar-collapsed {
  --sidebar: var(--admin-shell-sidebar-collapsed);
}

.app-shell::before {
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  width: var(--sidebar);
  background: var(--admin-shell-bg);
  backdrop-filter: blur(18px);
  pointer-events: none;
  transition: width var(--admin-shell-duration) var(--admin-shell-ease);
  z-index: 0;
}

.sidebar {
  position: relative;
  align-self: stretch;
  flex: 0 0 var(--sidebar);
  width: var(--sidebar);
  min-height: 100svh;
  z-index: 10;
  overflow: visible;
  transition:
    flex-basis var(--admin-shell-duration) var(--admin-shell-ease),
    width var(--admin-shell-duration) var(--admin-shell-ease);
}

.rail {
  position: fixed;
  inset: 0 auto 0 0;
  z-index: 10;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  width: 72px;
  height: 100svh;
  padding: 12px 8px;
  border-right: 0;
  background: var(--admin-shell-bg);
  opacity: 0;
  transform: translateX(-10px);
  pointer-events: none;
  transition:
    opacity var(--admin-shell-duration) var(--admin-shell-ease),
    transform var(--admin-shell-duration) var(--admin-shell-ease);
}

html.is-sidebar-collapsed .rail,
.app-shell.is-sidebar-collapsed .rail {
  opacity: 1;
  transform: translateX(0);
  pointer-events: auto;
}

.side-panel,
.panel {
  position: fixed;
  inset: 0 auto 0 0;
  z-index: 10;
  width: 292px;
  height: 100svh;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 16px;
  padding: 18px 14px 16px;
  background: var(--admin-shell-bg);
  opacity: 1;
  transform: translateX(0);
  pointer-events: auto;
  transition:
    opacity var(--admin-shell-duration) var(--admin-shell-ease),
    transform var(--admin-shell-duration) var(--admin-shell-ease);
}

html.is-sidebar-collapsed .side-panel,
.app-shell.is-sidebar-collapsed .side-panel,
html.is-sidebar-collapsed .panel,
.app-shell.is-sidebar-collapsed .panel {
  opacity: 0;
  transform: translateX(-14px);
  pointer-events: none;
}

.brand-mark,
.rail-button,
.menu-icon {
  width: 36px;
  height: 36px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex: 0 0 auto;
}

.brand-mark {
  border: 1px solid rgba(39, 88, 216, 0.2);
  border-radius: 999px;
  background: #fff;
  color: var(--admin-shell-blue);
  text-decoration: none;
  overflow: hidden;
  box-shadow: 0 8px 18px rgba(27, 46, 86, 0.08);
}

.rail-brand-logo {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.rail-button,
.menu-icon {
  border: 0;
  border-radius: 8px;
  background: transparent;
  color: #475467;
  text-decoration: none;
  cursor: pointer;
  transition: background 0.18s ease, color 0.18s ease;
}

.menu-icon[hidden],
.menu-link[hidden] {
  display: none !important;
}

.menu-icon {
  position: relative;
}

.rail-button:hover,
.menu-icon:hover,
.menu-icon.is-active {
  background: var(--admin-shell-active);
  color: var(--admin-shell-blue);
}

.rail-button i,
.menu-icon i {
  font-size: 19px;
}

.rail-spacer {
  flex: 1 1 auto;
}

.admin-menu-badge {
  display: none;
  min-width: 18px;
  height: 18px;
  padding: 0 5px;
  border-radius: 999px;
  background: #e5484d;
  color: #fff;
  font-size: 11px;
  font-weight: 700;
  line-height: 18px;
  text-align: center;
  box-shadow: 0 0 0 2px #fff;
}

.admin-menu-badge.is-visible {
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.menu-icon .admin-menu-badge {
  position: absolute;
  top: -4px;
  right: -4px;
  min-width: 16px;
  height: 16px;
  padding: 0 4px;
  font-size: 10px;
  line-height: 16px;
}

.side-title,
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  min-width: 0;
  padding: 2px 6px 0;
}

.side-brand-home,
.brand > .brand-mark {
  min-width: 0;
  display: flex;
  align-items: center;
  gap: 10px;
  color: inherit;
  text-decoration: none;
}

.side-brand-logo,
.brand-logo {
  width: 36px;
  height: 36px;
  flex: 0 0 auto;
  border-radius: 999px;
  object-fit: cover;
  display: block;
}

.side-brand-copy,
.brand-copy {
  min-width: 0;
  display: grid;
  gap: 3px;
}

.side-title strong,
.brand-title {
  margin: 0;
  color: #101828;
  font-size: 18px;
  line-height: 1.2;
  font-weight: 700;
  letter-spacing: 0;
}

.side-title span,
.brand-sub {
  margin: 0;
  color: var(--admin-shell-muted);
  font-size: 12px;
  line-height: 1.35;
  letter-spacing: 0;
}

.side-collapse-btn,
.sidebar-toggle {
  width: 32px;
  height: 32px;
  flex: 0 0 auto;
  margin-left: auto;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 0;
  border-radius: 8px;
  background: transparent;
  color: #475467;
  cursor: pointer;
}

.side-collapse-btn:hover,
.sidebar-toggle:hover {
  color: var(--admin-shell-blue);
  background: var(--admin-shell-active);
}

.side-collapse-btn i,
.sidebar-toggle i {
  font-size: 18px;
}

.side-search {
  position: relative;
  min-height: 36px;
}

form.side-search {
  display: flex;
  align-items: center;
  gap: 8px;
  width: 100%;
  padding: 0 10px;
  border: 1px solid rgba(15, 23, 42, 0.1);
  border-radius: 8px;
  background: #f8fafc;
  color: #98a2b3;
  font-size: 13px;
}

input.side-search {
  width: 100%;
  height: 36px;
  padding: 0 10px;
  border: 1px solid rgba(15, 23, 42, 0.1);
  border-radius: 8px;
  background: #f8fafc;
  color: var(--admin-shell-text);
  font-size: 13px;
}

.side-search i {
  color: #98a2b3;
  font-size: 16px;
  flex: 0 0 auto;
}

.side-search-input {
  width: 100%;
  min-width: 0;
  border: 0;
  outline: none;
  background: transparent;
  color: var(--admin-shell-text);
  font: inherit;
  font-size: 13px;
  line-height: 1.2;
  padding: 0;
}

.side-search-input::placeholder,
input.side-search::placeholder {
  color: #98a2b3;
}

.menu-stack {
  display: grid;
  gap: 14px;
}

.menu-group {
  display: grid;
  gap: 3.5px;
}

.menu-label,
.menu-section {
  margin: 0;
  padding: 0 8px;
  color: #98a2b3;
  font-size: 11px;
  font-weight: 700;
  line-height: 1.2;
  text-transform: uppercase;
  letter-spacing: 0;
}

.menu-stack .menu-group[aria-label="업무 메뉴"]::before {
  content: "Workflows";
  margin: 0;
  padding: 0 8px;
  color: #98a2b3;
  font-size: 11px;
  font-weight: 700;
  line-height: 1.2;
  text-transform: uppercase;
  letter-spacing: 0;
}

.menu-stack .menu-group[aria-label="업무 메뉴"] > .menu-label {
  display: none;
}

.menu-link {
  display: grid;
  grid-template-columns: 28px minmax(0, 1fr) auto;
  align-items: center;
  gap: 8px;
  min-height: 36px;
  padding: 0 8px;
  border-radius: 8px;
  color: #344054;
  text-decoration: none;
  font-size: 13px;
  line-height: 1.2;
  letter-spacing: 0;
  transition: background 0.18s ease, color 0.18s ease;
}

.menu-link:hover,
.menu-link.is-active {
  background: var(--admin-shell-active);
  color: var(--admin-shell-blue);
}

.menu-link i {
  width: 28px;
  text-align: center;
  color: inherit;
  font-size: 17px;
  line-height: 1;
}

.menu-link > span:not(.admin-menu-badge) {
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.side-footer {
  margin-top: auto;
  padding: 18px 8px 4px;
}

.holiday-notice {
  color: #d92d20;
  font-size: 12px;
  font-weight: 600;
  line-height: 1.35;
}

.task-topbar,
.page-topbar,
.item-topbar,
.request-topbar {
  position: fixed;
  top: 0;
  left: calc(var(--sidebar) - 1px);
  right: 0;
  z-index: 30;
  height: 44px;
  display: flex;
  align-items: center;
  padding: 0 20px;
  border-left: 1px solid rgba(15, 23, 42, 0.12);
  border-top: 1px solid rgba(15, 23, 42, 0.12);
  border-bottom: 1px solid rgba(15, 23, 42, 0.1);
  border-top-left-radius: 18px;
  background: #fff;
  backdrop-filter: blur(18px);
  transition: left var(--admin-shell-duration) var(--admin-shell-ease);
}

.task-topbar-title,
.page-topbar-title,
.item-topbar-title,
.request-topbar-title {
  margin: 0;
  color: #101828;
  font-size: 14px;
  font-weight: 400;
  line-height: 1.2;
}

.main-area:not(.guide-main),
.main {
  position: relative;
  z-index: 25;
  flex: 1 1 auto;
  min-width: 0;
  min-height: 100svh;
  margin-left: -1px;
  padding: 56px 24px 72px;
  background: #fff;
}

.main-area:not(.guide-main)::before,
.main::before {
  content: "";
  position: fixed;
  top: 44px;
  bottom: 0;
  left: calc(var(--sidebar) - 1px);
  z-index: 1;
  border-left: 1px solid rgba(15, 23, 42, 0.12);
  pointer-events: none;
  transition: left var(--admin-shell-duration) var(--admin-shell-ease);
}

.page,
.page-head,
.topbar {
  letter-spacing: 0;
}

.page-title {
  display: flex;
  align-items: center;
  gap: 12px;
  margin: 0;
  color: var(--admin-shell-blue);
  font-size: 30px;
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: 0;
}

.page-title i {
  color: var(--admin-shell-blue);
  font-size: 30px;
  font-weight: 400;
  line-height: 1;
}

@media (max-width: 1200px) {
  :root {
    --sidebar: 72px;
  }

  .app-shell {
    --sidebar: var(--admin-shell-sidebar-collapsed);
  }

  .rail {
    width: 72px;
    opacity: 1;
    transform: translateX(0);
    pointer-events: auto;
  }

  .side-panel,
  .panel {
    opacity: 0;
    transform: translateX(-14px);
    pointer-events: none;
  }

  .main-area:not(.guide-main),
  .main {
    padding-left: 0;
    padding-right: 0;
  }
}

@media (max-width: 720px) {
  :root {
    --sidebar: 0px;
  }

  .app-shell,
  html.is-sidebar-collapsed .app-shell,
  .app-shell.is-sidebar-collapsed {
    --sidebar: 0px;
  }

  body {
    padding: 0 !important;
  }

  .app-shell {
    display: block;
  }

  .app-shell::before {
    display: none;
  }

  .sidebar {
    position: fixed;
    inset: auto 0 0;
    flex: 0 0 auto;
    width: 100%;
    height: 62px;
    min-height: 0;
    display: block;
    border-top: 1px solid rgba(15, 23, 42, 0.1);
    border-right: 0;
    overflow: visible;
    z-index: 80;
  }

  .rail {
    position: static;
    width: 100%;
    height: 62px;
    flex-direction: row;
    justify-content: flex-start;
    gap: 8px;
    padding: 8px 12px;
    border-right: 0;
    overflow-x: auto;
    overflow-y: hidden;
    scrollbar-width: none;
    opacity: 1;
    transform: none;
    pointer-events: auto;
    scroll-snap-type: x proximity;
    -webkit-overflow-scrolling: touch;
    background: var(--admin-shell-bg);
    z-index: 80;
  }

  .rail::-webkit-scrollbar {
    display: none;
  }

  .side-panel,
  .panel {
    display: none;
  }

  .brand-mark,
  .rail-button,
  .rail-spacer {
    display: none;
  }

  .menu-icon {
    scroll-snap-align: center;
  }

  .task-topbar,
  .page-topbar,
  .item-topbar,
  .request-topbar {
    left: 0;
    height: 44px;
    padding: 0 16px;
    border-left: 0;
    border-top-left-radius: 0;
  }

  .main-area:not(.guide-main),
  .main {
    margin-left: 0;
    padding: 56px 16px calc(62px + env(safe-area-inset-bottom, 0px));
  }

  .main-area:not(.guide-main)::before,
  .main::before {
    display: none;
  }
}