:root {
  --ink: #242126;
  --muted: #6f6973;
  --paper: #f5f4f1;
  --surface: #ffffff;
  --line: #dedbe1;
  --qiqi-purple: #75539b;
  --qiqi-purple-soft: #eee8f5;
  --qiqi-purple-mid: #c7b5d5;
  --focus-ring: #75539b;
  --radius: 6px;
}

[hidden] { display: none !important; }

.admin-body { min-height: 100vh; background: var(--paper); }

a:focus-visible,
button:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible {
  outline: 3px solid var(--focus-ring);
  outline-offset: 2px;
}

.admin-topbar,
.admin-title,
.admin-section-header,
.media-edit-heading,
.learning-form-heading,
.admin-card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.admin-topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  min-height: 64px;
  padding: 10px 22px;
  background: var(--surface);
  border-bottom: 1px solid var(--line);
}

.admin-brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--ink);
  text-decoration: none;
}

.admin-brand img { width: 38px; height: 38px; }
.admin-brand span { display: grid; gap: 1px; }
.admin-brand strong { font-family: "Avenir Next", "PingFang SC", sans-serif; font-size: 13px; letter-spacing: 0; }
.admin-brand small { color: var(--muted); font-size: 11px; }

.admin-actions,
.card-tools,
.form-actions,
.media-card-actions,
.learning-table-actions {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  align-items: center;
}

.admin-actions { justify-content: flex-end; }
.form-actions, .card-tools { justify-content: flex-end; }

.admin-topbar .admin-actions a,
.admin-topbar .admin-actions button,
.button,
.small-action,
.small-danger {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 38px;
  padding: 0 11px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  font: inherit;
  font-size: 13px;
  font-weight: 700;
  text-decoration: none;
  cursor: pointer;
}

.admin-topbar .admin-actions a,
.admin-topbar .admin-actions button,
.button,
.small-action { color: var(--ink); background: var(--surface); }
.admin-topbar .admin-actions button, .small-danger { color: var(--danger); background: #fff7f5; border-color: #f0c9c4; }
.button.primary, .button.primary.solid { color: #fff; background: var(--qiqi-purple); border-color: var(--qiqi-purple); }
.button.primary:hover, .button.primary.solid:hover { background: #624482; border-color: #624482; }
.small-action { min-height: 32px; padding: 0 9px; font-size: 12px; }
.small-danger { min-height: 32px; padding: 0 9px; }

.admin-shell {
  display: grid;
  grid-template-columns: 208px minmax(0, 1fr);
  min-height: calc(100vh - 65px);
}

.admin-sidebar {
  position: sticky;
  top: 65px;
  align-self: start;
  display: grid;
  gap: 2px;
  min-height: calc(100vh - 65px);
  padding: 18px 12px;
  background: var(--surface);
  border-right: 1px solid var(--line);
}

.admin-sidebar button {
  min-height: 36px;
  padding: 0 10px;
  color: var(--muted);
  background: transparent;
  border: 1px solid transparent;
  border-radius: var(--radius);
  cursor: pointer;
  font: inherit;
  font-size: 13px;
  font-weight: 700;
  text-align: left;
}

.admin-sidebar button.active,
.admin-sidebar button[aria-selected="true"] { color: var(--qiqi-purple); background: var(--qiqi-purple-soft); }
.admin-sidebar button:hover:not(.active) { color: var(--ink); background: #f0eeeb; }

.admin-main { min-width: 0; padding: 26px; }
.admin-title { margin-bottom: 8px; }
.admin-title h1, .login-panel h1 { margin: 0; font-size: 24px; }
.admin-note { color: var(--muted); line-height: 1.6; }
.admin-title .eyebrow, .admin-section-header .eyebrow, .learning-form-heading .eyebrow, .media-edit-heading .eyebrow { margin-bottom: 4px; font-size: 11px; }

.editor-grid,
.admin-section,
.nested-list { display: grid; gap: 14px; }

.upload-panel { display: grid; gap: 14px; }

.editor-card,
.admin-grid-form,
.album-create-row,
.media-filter-bar,
.learning-admin-form,
.media-edit-form {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.editor-card { display: grid; gap: 12px; padding: 14px; }
.field-grid, .admin-grid-form, .learning-form-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px; }

.field-grid label,
.admin-grid-form label,
.album-create-row label,
.media-filter-bar label,
.learning-admin-filter-bar label,
.learning-form-grid label,
.login-form label {
  display: grid;
  gap: 6px;
  color: var(--muted);
  font-size: 12px;
  font-weight: 700;
}

.field-grid input,
.field-grid textarea,
.admin-grid-form input,
.admin-grid-form select,
.admin-grid-form textarea,
.album-create-row input,
.album-create-row select,
.media-filter-bar input,
.media-filter-bar select,
.learning-admin-filter-bar input,
.learning-admin-filter-bar select,
.learning-form-grid input,
.learning-form-grid select,
.learning-form-grid textarea,
.login-form input,
.raw-editor {
  width: 100%;
  min-height: 38px;
  padding: 8px 10px;
  color: var(--ink);
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  font: inherit;
}

.field-grid textarea, .admin-grid-form textarea, .learning-form-grid textarea, .raw-editor { min-height: 78px; resize: vertical; line-height: 1.55; }
.raw-editor { min-height: 620px; font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace; font-size: 13px; }

.field-grid input:focus-visible,
.field-grid textarea:focus-visible,
.admin-grid-form input:focus-visible,
.admin-grid-form select:focus-visible,
.admin-grid-form textarea:focus-visible,
.media-filter-bar input:focus-visible,
.media-filter-bar select:focus-visible,
.learning-admin-filter-bar input:focus-visible,
.learning-admin-filter-bar select:focus-visible,
.learning-form-grid input:focus-visible,
.learning-form-grid select:focus-visible,
.learning-form-grid textarea:focus-visible,
.login-form input:focus-visible { outline: 3px solid var(--focus-ring); outline-offset: 2px; }

.nested-item { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.4fr) 110px 42px; gap: 10px; align-items: start; }
.nested-item input, .nested-item textarea { min-height: 38px; padding: 8px 10px; border: 1px solid var(--line); border-radius: var(--radius); font: inherit; }
.nested-item textarea { min-height: 78px; resize: vertical; }
.span-2 { grid-column: 1 / -1; }
.confirmation-check { display: flex !important; align-items: center; gap: 8px; min-height: 38px; }
.confirmation-check input { width: 18px; min-height: 18px; }

.admin-section-header { padding: 0 0 14px; border-bottom: 1px solid var(--line); }
.admin-section-header h2 { margin: 0 0 4px; font-size: 20px; }
.admin-section-header p:not(.eyebrow) { max-width: 760px; margin: 0; color: var(--muted); line-height: 1.55; }

.media-admin-summary { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); }
.media-admin-summary > div { padding: 12px; border-right: 1px solid var(--line); }
.media-admin-summary > div:last-child { border-right: 0; }
.media-admin-summary strong, .media-admin-summary span { display: block; }
.media-admin-summary strong { color: var(--ink); font-size: 22px; }
.media-admin-summary span { margin-top: 3px; color: var(--muted); font-size: 12px; }

.admin-tabs {
  display: flex;
  gap: 0;
  overflow-x: auto;
  padding: 5px;
  scroll-padding-inline: 5px;
  border-bottom: 1px solid var(--line);
}
.admin-tab { flex: 0 0 auto; min-height: 38px; padding: 0 12px; color: var(--muted); background: transparent; border: 0; border-bottom: 2px solid transparent; font: inherit; font-size: 13px; font-weight: 700; cursor: pointer; }
.admin-tab.active { color: var(--qiqi-purple); border-bottom-color: var(--qiqi-purple); }

.upload-dropzone { display: flex; align-items: center; gap: 14px; min-height: 96px; padding: 16px; background: var(--surface); border: 1px dashed var(--line); border-radius: var(--radius); }
.upload-dropzone strong, .upload-dropzone span { display: block; }
.upload-dropzone span { margin-top: 4px; color: var(--muted); line-height: 1.55; }
.upload-mark { display: grid !important; place-items: center; flex: 0 0 40px; width: 40px; height: 40px; margin: 0 !important; color: #fff !important; background: var(--qiqi-purple); border-radius: var(--radius); font-size: 24px; }

.admin-grid-form { padding: 14px; }
.album-create-row { display: grid; grid-template-columns: minmax(180px, 1fr) 130px 150px auto; gap: 10px; align-items: end; margin-bottom: 14px; padding: 12px; }
.admin-card-grid, .admin-media-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 14px; }
.media-filter-bar { display: grid; grid-template-columns: minmax(180px, 1.5fr) repeat(3, minmax(120px, 1fr)) auto; gap: 10px; align-items: end; margin-bottom: 10px; padding: 12px; }
.filter-result-note { margin: 0 0 12px; color: var(--muted); font-size: 12px; }
.admin-load-more { display: flex; margin: 16px auto 0; }

.admin-album-card, .admin-media-card { overflow: hidden; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); }
.admin-album-card { position: relative; min-height: 150px; padding: 16px; }
.admin-album-card p, .admin-album-card small, .admin-media-card p { color: var(--muted); line-height: 1.55; }
.admin-media-visual { position: relative; }
.admin-media-visual img { display: block; width: 100%; aspect-ratio: 4 / 3; object-fit: cover; background: var(--paper); }
.privacy-pill { display: inline-flex; padding: 4px 7px; color: var(--ink); background: #e4f6ef; border-radius: var(--radius); font-size: 11px; font-weight: 800; }
.admin-media-visual .privacy-pill { position: absolute; top: 8px; right: 8px; }
.privacy-pill.public { color: #aa3912; background: #fff0e7; }
.admin-media-body { padding: 12px; }
.admin-media-body h3 { margin: 5px 0 7px; font-size: 16px; }
.media-record-type { color: var(--success); font-size: 12px; font-weight: 800; }
.admin-card-footer { padding-top: 10px; border-top: 1px solid var(--line); color: var(--muted); font-size: 12px; }
.media-card-actions, .learning-table-actions { justify-content: flex-end; }

.panel-callout { display: grid; gap: 4px; margin-bottom: 14px; padding: 12px; color: var(--ink); background: var(--paper); border-left: 4px solid var(--qiqi-purple); }
.panel-callout.ai { color: #175f53; border-left-color: var(--success); }
.panel-callout span { line-height: 1.55; }
.admin-empty { grid-column: 1 / -1; min-height: 100px; padding: 24px; color: var(--muted); border: 1px dashed var(--line); border-radius: var(--radius); }

.media-admin-workspace { display: grid; grid-template-columns: minmax(0, 1fr) minmax(300px, 360px); gap: 16px; align-items: start; }
.media-edit-form, .learning-admin-form { position: sticky; top: 82px; display: grid; gap: 14px; padding: 14px; }
.media-edit-heading, .learning-form-heading { padding-bottom: 10px; border-bottom: 1px solid var(--line); }
.media-edit-heading h3, .learning-form-heading h3 { margin: 0; font-size: 18px; }
.media-album-checks, .learning-member-checks, .learning-ai-reserve { margin: 0; padding: 10px; border: 1px solid var(--line); border-radius: var(--radius); }
.media-album-checks { display: flex; flex-wrap: wrap; gap: 8px 12px; }
.media-album-checks legend, .learning-member-checks legend, .learning-ai-reserve legend { padding: 0 4px; color: var(--muted); font-size: 12px; font-weight: 700; }
.media-album-checks label, .learning-member-checks label { display: inline-flex; align-items: center; gap: 5px; color: var(--ink); font-size: 12px; }

.learning-admin-layout { display: grid; grid-template-columns: minmax(0, 1.35fr) minmax(360px, 0.65fr); gap: 18px; align-items: start; }
.learning-admin-filter-bar { display: grid; grid-template-columns: minmax(220px, 1.5fr) repeat(3, minmax(130px, 0.7fr)); gap: 10px; padding: 14px 0; border-bottom: 1px solid var(--line); }
.learning-admin-table-wrap { min-width: 0; overflow-x: auto; border: 1px solid var(--line); border-radius: var(--radius); }
.learning-admin-table { width: 100%; min-width: 720px; border-collapse: collapse; background: var(--surface); }
.learning-admin-table th,
.learning-admin-table td { height: 48px; padding: 8px 10px; border-bottom: 1px solid var(--line); text-align: left; vertical-align: middle; }
.learning-admin-table th { color: var(--muted); background: var(--paper); font-size: 11px; font-weight: 800; }
.learning-admin-table td { font-size: 12px; }
.learning-admin-table td strong, .learning-admin-table td small { display: block; max-width: 240px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.learning-admin-table td small { margin-top: 3px; color: var(--muted); }
.learning-admin-empty { height: 96px !important; color: var(--muted); text-align: center !important; }
.learning-member-checks { display: flex; flex-wrap: wrap; gap: 10px; }
.learning-member-checks input { width: 16px; min-height: 16px; }
.learning-ai-reserve { background: var(--paper); }
.learning-ai-reserve input[readonly], .learning-ai-reserve textarea[readonly] { color: var(--muted); background: #f1efeb; cursor: not-allowed; }

.login-panel { width: min(360px, calc(100% - 28px)); margin: 12vh auto; padding: 24px; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); }
.login-brand { margin-bottom: 24px; }
.login-form { display: grid; gap: 14px; margin: 18px 0; }

@media (max-width: 860px) {
  .admin-topbar, .admin-title, .admin-section-header { align-items: flex-start; flex-direction: column; }
  .admin-shell { grid-template-columns: 1fr; }
  .admin-sidebar {
    position: static;
    min-height: 0;
    max-width: 100vw;
    overflow-x: auto;
    grid-auto-flow: column;
    grid-auto-columns: max-content;
    grid-template-columns: none;
    padding: 8px 12px;
    border-right: 0;
    border-bottom: 1px solid var(--line);
    -webkit-overflow-scrolling: touch;
  }
  .admin-sidebar button { min-width: max-content; min-height: 44px; text-align: center; }
  .admin-main { padding: 18px 16px; }
  .field-grid, .nested-item, .admin-grid-form, .album-create-row, .media-filter-bar, .learning-admin-filter-bar, .learning-admin-layout, .media-admin-workspace { grid-template-columns: 1fr; }
  .span-2 { grid-column: auto; }
  .media-admin-summary { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .media-admin-summary > div:nth-child(2) { border-right: 0; }
  .media-edit-form, .learning-admin-form { position: static; }
}

@media (max-width: 620px) {
  .admin-topbar { padding: 10px 14px; }
  .admin-actions { width: 100%; justify-content: flex-start; }
  .admin-title, .admin-section-header, .media-edit-heading, .learning-form-heading { align-items: flex-start; flex-direction: column; }
  .admin-main { padding: 16px 12px 24px; }
  .field-grid, .admin-grid-form, .learning-form-grid { grid-template-columns: 1fr; }
  .learning-form-grid .span-2 { grid-column: auto; }
  .upload-dropzone { align-items: flex-start; flex-direction: column; }
  .admin-card-grid { grid-template-columns: 1fr; }
  .admin-media-grid { grid-template-columns: 1fr; }
  .media-admin-summary { grid-template-columns: 1fr; }
  .media-admin-summary > div { border-right: 0; border-bottom: 1px solid var(--line); }
  .media-admin-summary > div:last-child { border-bottom: 0; }
  .media-card-actions, .learning-table-actions, .form-actions { justify-content: flex-start; }
  .login-panel { margin-top: 32px; padding: 20px; }
}

@media (pointer: coarse) {
  .admin-topbar .admin-actions a,
  .admin-topbar .admin-actions button,
  .admin-sidebar button,
  .admin-tab,
  .button,
  .small-action,
  .small-danger,
  input:not([type="checkbox"]):not([type="radio"]),
  select,
  textarea {
    min-height: 44px;
  }

  label:has(input[type="checkbox"]),
  label:has(input[type="radio"]) {
    display: flex;
    align-items: center;
    min-height: 44px;
    padding-block: 6px;
    cursor: pointer;
  }

  input[type="checkbox"],
  input[type="radio"] {
    flex: 0 0 auto;
    width: 22px;
    height: 22px;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }
}