:root {
  color-scheme: dark;
  --bg: #000000;
  --surface: #111111;
  --surface-raised: #1a1a1a;
  --surface-pressed: #242424;
  --line: #2d2d2d;
  --text: #f5f5f7;
  --muted: #a6a6b0;
  --accent: #4d9cff;
  --accent-strong: #2176e5;
  --danger: #ff6f6f;
  --success: #64d69a;
  --warning: #f1bd62;
  --header-height: 64px;
  font-family: "Noto Sans KR", "Apple SD Gothic Neo", "Segoe UI", sans-serif;
}

* {
  box-sizing: border-box;
}

html,
body {
  min-height: 100%;
  margin: 0;
  background: var(--bg);
  color: var(--text);
  overscroll-behavior-y: none;
}

body {
  overflow-x: hidden;
}

button,
input,
select {
  font: inherit;
}

button,
select {
  -webkit-tap-highlight-color: transparent;
}

button:focus-visible,
select:focus-visible,
input:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.hidden {
  display: none !important;
}

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

.app-header {
  position: sticky;
  top: 0;
  z-index: 50;
  width: 100%;
  padding-top: env(safe-area-inset-top);
  border-bottom: 1px solid #181818;
  background: #000000;
}

.library-toolbar,
.selection-toolbar {
  display: grid;
  align-items: center;
  width: min(100%, 1600px);
  min-height: var(--header-height);
  margin: 0 auto;
  padding: 0 max(8px, env(safe-area-inset-right)) 0 max(8px, env(safe-area-inset-left));
}

.library-toolbar {
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: start;
  padding-top: 8px;
  padding-bottom: 8px;
}

.toolbar-primary,
.toolbar-icons,
.toolbar-filters,
.viewer-actions {
  display: flex;
  align-items: center;
  min-width: 0;
}

.toolbar-primary {
  flex-wrap: wrap;
  overflow: visible;
}

.toolbar-icons {
  flex: 0 0 auto;
}

.toolbar-filters {
  flex: 0 0 auto;
  justify-content: flex-start;
}

.icon-button {
  display: inline-grid;
  place-items: center;
  flex: 0 0 48px;
  width: 48px;
  height: 48px;
  min-width: 48px;
  padding: 0;
  border: 0;
  border-radius: 8px;
  background: transparent;
  color: var(--text);
  cursor: pointer;
}

.icon-button:hover,
.icon-button:active,
.icon-button.active {
  background: var(--surface-raised);
  color: var(--accent);
}

.icon-button:disabled {
  opacity: 0.38;
  cursor: default;
}

.icon-button svg,
.popup-menu svg,
.guide-list svg,
.center-state > svg {
  width: 24px;
  height: 24px;
  flex: 0 0 24px;
}

.menu-anchor {
  position: relative;
}

.toolbar-dropdown-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 5px;
  height: 48px;
  min-width: 68px;
  padding: 0 8px;
  border: 0;
  border-radius: 12px;
  background: transparent;
  color: var(--text);
  font-size: 14px;
  font-weight: 600;
  white-space: nowrap;
  cursor: pointer;
}

.toolbar-dropdown-button:hover,
.toolbar-dropdown-button:active,
.toolbar-dropdown-button[aria-expanded="true"] {
  background: var(--surface-raised);
}

.dropdown-caret {
  width: 0;
  height: 0;
  border-right: 5px solid transparent;
  border-left: 5px solid transparent;
  border-top: 6px solid currentColor;
}

.popup-menu {
  position: absolute;
  top: calc(100% + 4px);
  z-index: 80;
  width: 190px;
  max-height: min(72vh, 620px);
  padding: 6px;
  overflow: auto;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
  box-shadow: 0 14px 36px rgba(0, 0, 0, 0.52);
}

.size-menu {
  left: 0;
}

.filter-popup {
  left: 0;
  width: 150px;
}

.settings-menu {
  right: 0;
  width: 250px;
  overflow: visible;
}

.popup-menu button,
.admin-menu-group button {
  display: flex;
  align-items: center;
  gap: 12px;
  width: 100%;
  min-height: 48px;
  padding: 0 12px;
  border: 0;
  border-radius: 6px;
  background: transparent;
  color: var(--text);
  text-align: left;
  cursor: pointer;
}

.popup-menu button:hover,
.popup-menu button:active,
.popup-menu button.active {
  background: var(--surface-pressed);
}

.popup-menu button.active {
  color: var(--accent);
}

.admin-menu-group {
  position: relative;
}

.admin-menu-chevron {
  width: 18px;
  height: 18px;
  margin-left: auto;
  transition: transform 160ms ease;
}

.admin-submenu {
  position: absolute;
  top: -6px;
  right: calc(100% + 8px);
  display: none;
  width: 230px;
  padding: 6px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
  box-shadow: 0 14px 36px rgba(0, 0, 0, 0.52);
}

.admin-menu-group:hover > .admin-submenu,
.admin-menu-group:focus-within > .admin-submenu,
.admin-menu-group.expanded > .admin-submenu {
  display: block;
}

.admin-menu-group.expanded .admin-menu-chevron {
  transform: rotate(-90deg);
}

.pin-field {
  letter-spacing: 0.24em;
  text-align: center;
}

.menu-divider {
  height: 1px;
  margin: 6px 8px;
  background: var(--line);
}

.selection-toolbar {
  grid-template-columns: minmax(0, 1fr) auto auto;
  gap: 6px;
}

.selection-toolbar strong {
  min-width: 0;
  padding-left: 8px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.selection-primary,
.selection-cancel,
.primary-button,
.text-button,
.status-action,
.load-more {
  min-height: 44px;
  padding: 0 14px;
  border: 0;
  border-radius: 8px;
  font-weight: 700;
  cursor: pointer;
}

.selection-primary,
.primary-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 7px;
  background: var(--accent-strong);
  color: #ffffff;
}

.selection-primary svg {
  width: 20px;
  height: 20px;
}

.selection-cancel,
.text-button {
  background: transparent;
  color: var(--accent);
}

.folder-panel,
.category-panel {
  display: flex;
  align-items: center;
  gap: 8px;
  width: min(100%, 1600px);
  min-height: 54px;
  margin: 0 auto;
  padding: 4px max(10px, env(safe-area-inset-right)) 8px max(10px, env(safe-area-inset-left));
  overflow-x: auto;
  scrollbar-width: none;
}

.folder-panel::-webkit-scrollbar,
.category-panel::-webkit-scrollbar,
.year-list::-webkit-scrollbar {
  display: none;
}

.year-list {
  display: flex;
  gap: 8px;
}

.folder-chip {
  flex: 0 0 auto;
  min-width: 64px;
  min-height: 44px;
  padding: 0 14px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
  color: var(--text);
  cursor: pointer;
}

.folder-chip.active {
  border-color: var(--accent);
  background: rgba(77, 156, 255, 0.16);
  color: #89bdff;
}

.category-option {
  flex: 0 0 auto;
  min-height: 48px;
  padding: 0 10px;
  border: 0;
  border-radius: 12px;
  background: transparent;
  color: var(--text);
  cursor: pointer;
}

.category-option:hover,
.category-option:active {
  background: var(--surface-raised);
}

.category-option.active {
  color: var(--accent);
  font-weight: 600;
}

.library-main {
  width: min(100%, 1600px);
  min-height: calc(100vh - var(--header-height));
  min-height: calc(100svh - var(--header-height));
  margin: 0 auto;
  padding: 10px max(10px, env(safe-area-inset-right)) max(28px, env(safe-area-inset-bottom))
    max(10px, env(safe-area-inset-left));
}

.status-banner {
  min-height: 44px;
  margin: 0 0 10px;
  padding: 11px 12px;
  border-bottom: 1px solid var(--line);
  color: #e3b1b1;
  font-size: 14px;
}

.media-grid {
  display: grid;
  align-items: start;
  gap: 8px;
  user-select: none;
  -webkit-user-select: none;
  -webkit-touch-callout: none;
  touch-action: pan-y;
}

.media-grid.library-refreshing {
  pointer-events: none;
}

.media-grid.size-t {
  grid-template-columns: repeat(auto-fill, minmax(110px, 1fr));
}

.media-grid.size-s {
  grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
}

.media-grid.size-m {
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
}

.media-grid.size-l {
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
}

.media-card {
  position: relative;
  min-width: 0;
  aspect-ratio: 3 / 4;
  padding: 0;
  overflow: hidden;
  border: 2px solid transparent;
  border-radius: 8px;
  background: #313137;
  color: var(--text);
  cursor: pointer;
  user-select: none;
  -webkit-user-select: none;
  -webkit-touch-callout: none;
  -webkit-tap-highlight-color: transparent;
}

.media-card *,
.media-card img {
  user-select: none;
  -webkit-user-select: none;
  -webkit-touch-callout: none;
}

.media-card .preparation-badge {
  position: absolute;
  left: 6px;
  bottom: 6px;
  padding: 3px 6px;
  max-width: calc(100% - 12px);
  border-radius: 4px;
  background: rgba(0, 0, 0, 0.8);
  color: #fff;
  font-size: 12px;
  line-height: 1.4;
  pointer-events: none;
}

.media-card img {
  pointer-events: none;
  -webkit-user-drag: none;
}

.media-card > span {
  pointer-events: none;
}

.media-card.selected {
  border-color: var(--accent);
}

.media-card.unavailable {
  opacity: 0.58;
  cursor: default;
}

.media-card img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  aspect-ratio: auto;
  transform: none;
  display: block;
}

.media-card.video-card img {
  object-fit: cover;
  object-position: center;
}

.media-fallback {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  color: #c5c5cd;
}

.video-play {
  position: absolute;
  top: 50%;
  left: 50%;
  display: grid;
  place-items: center;
  width: 44px;
  height: 44px;
  transform: translate(-50%, -50%);
  border-radius: 50%;
  background: rgba(33, 118, 229, 0.92);
  color: #ffffff;
  box-shadow: 0 3px 14px rgba(0, 0, 0, 0.35);
}

.video-play svg {
  width: 24px;
  height: 24px;
}

.selection-mark {
  position: absolute;
  top: 7px;
  right: 7px;
  display: none;
  place-items: center;
  width: 30px;
  height: 30px;
  border: 2px solid rgba(255, 255, 255, 0.9);
  border-radius: 50%;
  background: rgba(0, 0, 0, 0.48);
  color: #ffffff;
}

.selection-mode .selection-mark,
.media-card.selected .selection-mark {
  display: grid;
}

.media-card.selected .selection-mark {
  border-color: var(--accent);
  background: var(--accent-strong);
}

.selection-mark svg {
  width: 18px;
  height: 18px;
}

.pending-badge {
  position: absolute;
  right: 7px;
  bottom: 7px;
  max-width: calc(100% - 14px);
  min-height: 25px;
  padding: 4px 8px;
  overflow: hidden;
  border-radius: 5px;
  background: rgba(13, 13, 16, 0.86);
  color: #ffffff;
  font-size: 11px;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.center-state {
  display: grid;
  place-items: center;
  align-content: center;
  gap: 10px;
  min-height: 52vh;
  min-height: 52svh;
  color: var(--muted);
  text-align: center;
}

.center-state strong {
  color: var(--text);
}

.load-more {
  display: flex;
  margin: 18px auto 0;
  border: 1px solid #3d659b;
  background: #101b2c;
  color: #b9d5ff;
}

.scroll-sentinel {
  height: 1px;
}

.modal-layer {
  position: fixed;
  inset: 0;
  z-index: 90;
  display: grid;
  place-items: center;
  padding: 16px;
  background: rgba(0, 0, 0, 0.76);
}

.sheet {
  width: min(560px, 100%);
  max-height: min(86vh, 760px);
  max-height: min(86svh, 760px);
  padding: 10px 14px 16px;
  overflow: auto;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
}

.status-sheet {
  width: min(720px, 100%);
}

.sheet-header {
  position: sticky;
  top: -10px;
  z-index: 2;
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  min-height: 58px;
  margin: 0 -4px 12px;
  background: var(--surface);
}

.sheet-header h2 {
  min-width: 0;
  margin: 0;
  overflow: hidden;
  font-size: 20px;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.compact-sheet > .sheet-header h2,
.guide-sheet > .sheet-header h2,
.info-sheet > .sheet-header h2 {
  grid-column: 1 / 3;
}

.field-label {
  display: block;
  margin: 12px 0 6px;
  color: var(--muted);
  font-size: 13px;
}

.text-field,
.search-field {
  width: 100%;
  min-height: 48px;
  border: 1px solid #393939;
  border-radius: 8px;
  background: #090909;
  color: var(--text);
}

.text-field {
  padding: 0 12px;
}

.search-field {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  align-items: center;
  gap: 8px;
  padding: 0 12px;
}

.search-field svg {
  width: 20px;
  height: 20px;
  color: var(--muted);
}

.search-field input {
  width: 100%;
  height: 46px;
  padding: 0;
  border: 0;
  outline: 0;
  background: transparent;
  color: var(--text);
}

.sheet-actions {
  display: flex;
  justify-content: flex-end;
  gap: 8px;
  margin-top: 18px;
}

.admin-expiry-sheet {
  width: min(400px, 100%);
  padding-bottom: 12px;
}

.admin-expiry-sheet > .sheet-header {
  min-height: 50px;
  margin-bottom: 4px;
}

.admin-expiry-message {
  margin: 0 0 8px;
  color: var(--muted);
  line-height: 1.45;
}

.admin-expiry-countdown {
  display: block;
  padding: 8px 0 10px;
  color: var(--text);
  font-size: 24px;
  font-variant-numeric: tabular-nums;
}

.admin-expiry-actions {
  margin-top: 6px;
}

.form-error {
  margin: 12px 0 0;
  color: var(--danger);
  font-size: 13px;
}

.status-section {
  padding: 12px 0 18px;
  border-bottom: 1px solid var(--line);
}

.status-section:last-child {
  border-bottom: 0;
}

.status-section > h3 {
  margin: 0 0 10px;
  font-size: 17px;
}

.status-empty {
  margin: 0;
  padding: 16px 2px;
  color: var(--muted);
}

.transfer-row {
  padding: 12px 2px;
  border-bottom: 1px solid #242424;
}

.transfer-row:last-child {
  border-bottom: 0;
}

.transfer-head {
  display: flex;
  align-items: start;
  justify-content: space-between;
  gap: 12px;
}

.transfer-title {
  min-width: 0;
  margin: 0;
  overflow: hidden;
  font-weight: 700;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.transfer-meta,
.transfer-message,
.transfer-time {
  margin: 5px 0 0;
  color: var(--muted);
  font-size: 13px;
}

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

.progress-track {
  height: 5px;
  margin: 10px 0 0;
  overflow: hidden;
  border-radius: 3px;
  background: #303036;
}

.progress-bar {
  height: 100%;
  width: 0;
  background: var(--accent);
  transition: width 160ms linear;
}

.transfer-actions {
  display: flex;
  justify-content: flex-end;
  gap: 6px;
  margin-top: 8px;
}

.status-action {
  background: transparent;
  color: var(--accent);
}

.status-action.danger {
  color: var(--danger);
}

.info-content dl {
  display: grid;
  grid-template-columns: minmax(100px, auto) minmax(0, 1fr);
  gap: 10px 18px;
  margin: 0;
}

.info-content dt {
  color: var(--muted);
}

.info-content dd {
  min-width: 0;
  margin: 0;
  overflow-wrap: anywhere;
}

.guide-list {
  display: grid;
  gap: 2px;
}

.guide-list p {
  display: grid;
  grid-template-columns: 32px minmax(0, 1fr);
  align-items: start;
  gap: 10px;
  margin: 0;
  padding: 12px 4px;
  border-bottom: 1px solid #242424;
}

.guide-list strong {
  display: block;
  margin-bottom: 2px;
}

.viewer {
  position: fixed;
  inset: 0;
  z-index: 100;
  display: grid;
  grid-template-rows: auto minmax(0, 1fr);
  width: 100vw;
  height: 100vh;
  height: 100svh;
  max-width: 100vw;
  max-height: 100vh;
  max-height: 100svh;
  padding-top: env(safe-area-inset-top);
  padding-bottom: env(safe-area-inset-bottom);
  overflow: hidden;
  background: #000000;
}

.viewer-toolbar {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  min-height: 64px;
  padding: 0 max(4px, env(safe-area-inset-right)) 0 max(4px, env(safe-area-inset-left));
}

.viewer-title {
  min-width: 0;
  padding: 0 8px;
  overflow: hidden;
  font-weight: 650;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.viewer-stage {
  position: relative;
  width: 100%;
  height: 100%;
  min-width: 0;
  min-height: 0;
  max-width: 100%;
  max-height: 100%;
  display: grid;
  place-items: center;
  overflow: hidden;
  touch-action: none;
}

.viewer-media {
  position: relative;
  display: grid;
  place-items: center;
  width: 100%;
  height: 100%;
  min-width: 0;
  min-height: 0;
  overflow: hidden;
  touch-action: none;
}

.viewer-media img,
.viewer-media video {
  position: absolute;
  top: 50%;
  left: 50%;
  display: block;
  width: 100%;
  height: 100%;
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
  transform: translate(-50%, -50%) rotate(var(--media-rotation, 0deg));
  transition: transform 160ms ease;
}

.viewer-media img.viewer-media-fitted,
.viewer-media video.viewer-media-fitted {
  max-width: none;
  max-height: none;
}

.viewer-nav {
  position: absolute;
  left: 50%;
  z-index: 2;
  display: none;
  place-items: center;
  width: 48px;
  height: 48px;
  padding: 0;
  transform: translateX(-50%);
  border: 0;
  border-radius: 50%;
  background: rgba(0, 0, 0, 0.46);
  color: #ffffff;
  cursor: pointer;
}

.viewer-nav.prev {
  top: 8px;
}

.viewer-nav.next {
  bottom: 8px;
}

body.selection-mode .media-grid {
  touch-action: none;
}

#info-sheet {
  z-index: 120;
}

.viewer-nav:disabled {
  display: none;
}

.toast {
  position: fixed;
  left: 50%;
  bottom: max(20px, calc(env(safe-area-inset-bottom) + 12px));
  z-index: 130;
  width: max-content;
  max-width: calc(100vw - 32px);
  min-height: 44px;
  padding: 11px 16px;
  transform: translateX(-50%);
  border: 1px solid #393939;
  border-radius: 8px;
  background: #202020;
  color: #ffffff;
  box-shadow: 0 10px 34px rgba(0, 0, 0, 0.52);
  text-align: center;
}

.toast.error {
  border-color: #763838;
  background: #351717;
}

@media (max-width: 760px) {
  .media-grid.size-t {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .media-grid.size-s {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .media-grid.size-m {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .media-grid.size-l {
    grid-template-columns: minmax(0, 1fr);
  }

  .modal-layer {
    align-items: end;
    padding: 0;
  }

  .sheet {
    width: 100%;
    max-width: 100%;
    max-height: 88vh;
    max-height: 88svh;
    padding-bottom: max(16px, env(safe-area-inset-bottom));
    border-right: 0;
    border-bottom: 0;
    border-left: 0;
    border-radius: 8px 8px 0 0;
  }

  #transfer-sheet {
    align-items: stretch;
  }

  #transfer-sheet .status-sheet {
    width: 100%;
    height: 100vh;
    height: 100svh;
    max-height: 100vh;
    max-height: 100svh;
    padding-top: max(10px, env(safe-area-inset-top));
    border: 0;
    border-radius: 0;
  }
}

@media (max-width: 560px), (max-width: 760px) and (min-resolution: 1.3dppx) {
  :root {
    --header-height: 64px;
  }

  .library-toolbar {
    padding-right: max(4px, env(safe-area-inset-right));
    padding-left: max(4px, env(safe-area-inset-left));
  }

  .toolbar-dropdown-button {
    min-width: 64px;
    padding-right: 6px;
    padding-left: 6px;
  }

  .settings-menu {
    position: fixed;
    top: calc(58px + env(safe-area-inset-top));
    right: 8px;
    width: min(250px, calc(100vw - 16px));
    overflow: auto;
  }

  .admin-submenu {
    position: static;
    width: auto;
    margin: 0 4px 4px 18px;
    padding: 2px 0 2px 8px;
    border-width: 0 0 0 1px;
    border-radius: 0;
    box-shadow: none;
  }

  .admin-menu-group:not(.expanded) > .admin-submenu {
    display: none;
  }

  .admin-menu-group.expanded > .admin-submenu {
    display: block;
  }

  .admin-menu-group.expanded .admin-menu-chevron {
    transform: rotate(-90deg);
  }

  .selection-toolbar {
    min-height: 64px;
  }

  .viewer-toolbar .icon-button,
  .viewer-actions .icon-button {
    flex-basis: 44px;
    width: 44px;
    min-width: 44px;
  }

  .viewer-title {
    font-size: 14px;
  }
}

@media (max-width: 390px) {
  .library-toolbar .icon-button {
    flex-basis: 44px;
    width: 44px;
    min-width: 44px;
  }

  .selection-primary,
  .selection-cancel {
    padding: 0 10px;
    font-size: 13px;
  }

  .viewer-title {
    display: none;
  }

  .viewer-toolbar {
    grid-template-columns: auto minmax(0, 1fr);
  }
}

@media (hover: hover) and (pointer: fine) {
  .media-card:hover {
    border-color: #4d4d55;
  }

  .media-card.selected:hover {
    border-color: var(--accent);
  }
}

@media (prefers-reduced-motion: reduce) {
  .progress-bar,
  .viewer-media img,
  .viewer-media video {
    transition: none;
  }
}

.direct-read-notice { margin: 8px 12px; font-size: 12px; line-height: 1.5; opacity: .8; }