:root {
  color-scheme: dark;
  --bg: #0f1014;
  --panel: #17191f;
  --panel-soft: #20232d;
  --line: rgba(255, 255, 255, 0.1);
  --text: #f4f6fb;
  --muted: #9298a8;
  --purple: #7a5cff;
  --pink: #ff4f8b;
  --green: #36d399;
  --orange: #ff8a3d;
  --cyan: #2fd7ff;
  --blue: #5596ff;
  --gold: #ffd13d;
  --electric: #29e7ff;
  --shadow: 0 24px 60px rgba(0, 0, 0, 0.4);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-width: 1180px;
  background:
    linear-gradient(rgba(255, 255, 255, 0.028) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.024) 1px, transparent 1px),
    linear-gradient(120deg, rgba(122, 92, 255, 0.08), transparent 34%),
    #0c0e14;
  background-size: 44px 44px, 44px 44px, auto, auto;
  color: var(--text);
  font-family: Inter, "PingFang SC", "Microsoft YaHei", Arial, sans-serif;
  letter-spacing: 0;
}

button,
input,
select,
textarea {
  font: inherit;
}

button {
  cursor: pointer;
}

body.locked {
  overflow: hidden;
}

body.locked .app-shell {
  display: none;
}

.access-gate {
  display: none;
}

body.locked .access-gate {
  display: grid;
  place-items: center;
  min-height: 100vh;
  padding: 24px;
  background:
    linear-gradient(rgba(41, 231, 255, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(41, 231, 255, 0.04) 1px, transparent 1px),
    radial-gradient(circle at 50% 0%, rgba(122, 92, 255, 0.22), transparent 36%),
    #0b0d13;
  background-size: 38px 38px, 38px 38px, auto, auto;
}

.access-card {
  width: min(420px, 100%);
  border: 1px solid rgba(41, 231, 255, 0.24);
  border-radius: 10px;
  background:
    linear-gradient(145deg, rgba(41, 231, 255, 0.12), transparent 42%),
    #151923;
  box-shadow: 0 28px 80px rgba(0, 0, 0, 0.42);
  padding: 28px;
}

.access-mark {
  display: grid;
  place-items: center;
  width: 58px;
  height: 44px;
  margin-bottom: 20px;
  border: 1px solid rgba(41, 231, 255, 0.38);
  border-radius: 10px;
  background: linear-gradient(135deg, #7a5cff, #151923);
  color: white;
  font-weight: 900;
}

.access-card h2 {
  margin-bottom: 8px;
  font-size: 26px;
}

.access-card p:not(.eyebrow) {
  margin: 0 0 18px;
  color: var(--muted);
  line-height: 1.55;
}

.access-card .primary-button {
  width: 100%;
  margin-top: 14px;
}

.access-error {
  display: block;
  min-height: 18px;
  margin-top: 10px;
  color: #ff8fa3;
  font-size: 13px;
}

body.view-only .edit-action {
  display: none;
}

.app-shell {
  display: grid;
  grid-template-columns: 300px minmax(0, 1fr);
  min-height: 100vh;
}

.sidebar {
  position: sticky;
  top: 0;
  height: 100vh;
  overflow: auto;
  border-right: 1px solid var(--line);
  background:
    linear-gradient(180deg, rgba(122, 92, 255, 0.09), transparent 28%),
    #11141c;
  padding: 18px 14px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 0 4px 24px;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 46px;
  height: 38px;
  border-radius: 10px;
  border: 1px solid rgba(41, 231, 255, 0.38);
  background: linear-gradient(135deg, #7a5cff, #161b2b 70%);
  color: white;
  font-size: 13px;
  font-weight: 800;
}

.brand-name {
  font-size: 19px;
  font-weight: 800;
}

.brand-subtitle,
.eyebrow,
.nav-title,
.learning-title {
  color: var(--muted);
  font-size: 12px;
}

.nav-block {
  display: grid;
  gap: 7px;
  margin-bottom: 22px;
}

.nav-title {
  padding: 0 8px 6px;
}

.tree-title {
  color: #f5f7ff;
  font-size: 16px;
  font-weight: 900;
}

.nav-item {
  display: grid;
  grid-template-columns: 22px 1fr auto;
  align-items: center;
  gap: 9px;
  min-height: 40px;
  border: 0;
  border-radius: 8px;
  background: transparent;
  color: #c7ccda;
  padding: 0 10px;
  text-align: left;
}

.nav-item:hover,
.nav-item.active,
.nav-item.selected {
  background: rgba(122, 92, 255, 0.14);
  color: var(--text);
}

.nav-icon {
  color: #9c8cff;
}

.nav-item strong,
.nav-item em {
  border-radius: 999px;
  padding: 2px 8px;
  background: rgba(54, 211, 153, 0.16);
  color: var(--green);
  font-size: 12px;
  font-style: normal;
}

.nav-item em {
  background: rgba(122, 92, 255, 0.16);
  color: #a995ff;
}

.auth-switch em {
  color: #b7eff7;
}

.tree-nav {
  gap: 14px;
}

.tree-reset,
.platform-node,
.tertiary-list button,
.sop-node {
  width: 100%;
  border: 0;
  border-radius: 8px;
  color: #cbd0de;
  text-align: left;
}

.tree-reset {
  min-height: 36px;
  background: rgba(122, 92, 255, 0.12);
  padding: 0 10px;
  font-weight: 700;
}

.tree-section {
  border: 1px solid rgba(41, 231, 255, 0.12);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.03);
  padding: 12px 10px;
}

.audience-group + .audience-group {
  margin-top: 12px;
  border-top: 1px solid var(--line);
  padding-top: 12px;
}

.audience-heading {
  display: grid;
  gap: 3px;
  margin-bottom: 8px;
  color: var(--text);
  font-size: 14px;
  font-weight: 800;
}

.audience-heading span {
  color: var(--muted);
  font-size: 11px;
  font-weight: 500;
}

.platform-group {
  margin-bottom: 5px;
}

.platform-node {
  position: relative;
  display: grid;
  grid-template-columns: 28px 1fr 14px;
  align-items: center;
  gap: 8px;
  min-height: 34px;
  background: transparent;
  padding: 0 8px;
  font-size: 13px;
  font-weight: 800;
}

.platform-node::after {
  content: "›";
  color: var(--muted);
  font-size: 17px;
  transition: transform 0.18s ease;
}

.platform-group.open .platform-node::after {
  transform: rotate(90deg);
}

.tertiary-list {
  display: none;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 6px;
  padding: 4px 0 8px 34px;
}

.platform-group.open .tertiary-list {
  display: grid;
}

.tertiary-list button,
.sop-node {
  min-height: 30px;
  background: rgba(255, 255, 255, 0.04);
  padding: 0 8px;
  font-size: 12px;
  font-weight: 700;
}

.sop-node {
  display: grid;
  grid-template-columns: 28px 1fr;
  align-items: center;
  gap: 8px;
  margin-bottom: 6px;
  font-size: 13px;
}

.tree-reset.active,
.platform-node.active,
.tertiary-list button.active,
.sop-node.active {
  background: rgba(122, 92, 255, 0.22);
  color: var(--text);
}

.tree-reset:hover,
.platform-node:hover,
.tertiary-list button:hover,
.sop-node:hover {
  background: rgba(122, 92, 255, 0.16);
}

.dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
}

.red { background: #ff3b5c; }
.pink { background: var(--pink); }
.green { background: var(--green); }
.orange { background: var(--orange); }
.blue { background: var(--blue); }
.cyan { background: var(--cyan); }
.yellow { background: var(--gold); }

.platform-icon {
  display: block;
  width: 24px;
  height: 24px;
  border-radius: 7px;
  object-fit: cover;
  box-shadow: 0 0 0 1px rgba(255, 255, 255, 0.14);
}

.platform-icon.fallback {
  display: inline-grid;
  place-items: center;
  background: var(--panel-soft);
  color: white;
  font-size: 11px;
  font-weight: 900;
}

.team-card {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-top: 34px;
  border-top: 1px solid var(--line);
  padding: 18px 4px 0;
}

.avatar {
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  border-radius: 50%;
  background: var(--orange);
  font-weight: 800;
}

.team-card span {
  display: block;
  margin-top: 3px;
  color: var(--muted);
  font-size: 12px;
}

.workspace {
  min-width: 0;
  padding: 22px 28px 36px;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  border-bottom: 1px solid var(--line);
  padding-bottom: 16px;
}

.eyebrow {
  margin: 0 0 4px;
  text-transform: uppercase;
}

h1,
h2 {
  margin: 0;
  line-height: 1.15;
}

h1 {
  font-size: 30px;
}

h2 {
  font-size: 19px;
}

.topbar-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}

.search {
  display: flex;
  align-items: center;
  gap: 8px;
  width: 360px;
  height: 40px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #151720;
  padding: 0 12px;
  color: var(--muted);
}

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

.primary-button,
.ghost-button,
.icon-button {
  border: 1px solid var(--line);
  border-radius: 8px;
  color: var(--text);
}

.primary-button {
  min-height: 40px;
  border-color: rgba(122, 92, 255, 0.85);
  background: #7a5cff;
  padding: 0 16px;
  font-weight: 700;
}

.ghost-button {
  min-height: 40px;
  background: var(--panel-soft);
  padding: 0 14px;
}

.brand-hero {
  display: grid;
  grid-template-columns: minmax(0, 1.55fr) minmax(320px, 0.85fr);
  gap: 14px;
  margin: 18px 0 16px;
}

.brand-hero-main,
.learning-panel {
  border: 1px solid rgba(41, 231, 255, 0.18);
  border-radius: 8px;
  background: var(--panel);
  padding: 22px;
}

.brand-hero-main {
  position: relative;
  overflow: hidden;
  min-height: 210px;
  background:
    linear-gradient(rgba(41, 231, 255, 0.08) 1px, transparent 1px),
    linear-gradient(90deg, rgba(41, 231, 255, 0.06) 1px, transparent 1px),
    linear-gradient(118deg, rgba(122, 92, 255, 0.24), transparent 46%),
    #121620;
  background-size: 28px 28px, 28px 28px, auto, auto;
}

.brand-hero-main::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  width: 5px;
  height: 100%;
  background: linear-gradient(var(--electric), var(--purple));
}

.brand-hero-main::after {
  content: "";
  position: absolute;
  right: 22px;
  top: 24px;
  width: 180px;
  height: 42px;
  border-top: 1px solid rgba(41, 231, 255, 0.35);
  border-right: 1px solid rgba(41, 231, 255, 0.35);
}

.hero-label {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 24px;
  color: var(--muted);
  font-size: 12px;
  letter-spacing: 0;
}

.hero-label span {
  border: 1px solid rgba(41, 231, 255, 0.18);
  border-radius: 999px;
  padding: 5px 10px;
  background: rgba(41, 231, 255, 0.07);
  color: #b7eff7;
}

.hero-label strong {
  color: rgba(255, 255, 255, 0.45);
  font-size: 12px;
}

.slogan-core {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 18px;
}

.slogan-core span {
  color: #f6f8ff;
  font-size: 40px;
  font-weight: 900;
  text-shadow: 0 0 28px rgba(41, 231, 255, 0.22);
}

.slogan-core i {
  display: block;
  width: 28px;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--electric), transparent);
}

.hero-line {
  margin: 0;
  color: #dfe4f3;
  font-size: 19px;
  font-weight: 700;
}

.learning-panel {
  display: grid;
  align-content: start;
  gap: 12px;
  background:
    linear-gradient(145deg, rgba(41, 231, 255, 0.1), transparent 44%),
    #151922;
}

.learning-title {
  font-weight: 700;
}

.learning-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
}

.learning-grid span {
  border: 1px solid rgba(41, 231, 255, 0.14);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.04);
  padding: 10px;
  color: #e9edf8;
  font-weight: 700;
}

.filter-panel {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 14px;
  margin-bottom: 16px;
}

.filter-panel.compact {
  display: flex;
  justify-content: flex-end;
}

.segmented,
.type-tabs,
.chip-row {
  display: flex;
  align-items: center;
  gap: 7px;
  min-width: 0;
}

.segmented,
.type-tabs {
  border: 1px solid var(--line);
  border-radius: 10px;
  background: #111219;
  padding: 4px;
}

.segmented button,
.type-tabs button,
.chip-row button {
  min-height: 32px;
  border: 0;
  border-radius: 8px;
  background: transparent;
  color: #b8bdca;
  padding: 0 12px;
  white-space: nowrap;
}

.segmented button.active,
.type-tabs button.active,
.chip-row button.active {
  background: var(--purple);
  color: white;
}

.chip-row {
  overflow: auto;
}

.chip-row button {
  border: 1px solid var(--line);
  background: var(--panel);
}

.content-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 16px;
  align-items: start;
}

.taxonomy,
.library {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
}

.taxonomy {
  position: sticky;
  top: 18px;
  padding: 14px;
}

.taxonomy-section + .taxonomy-section {
  margin-top: 18px;
  border-top: 1px solid var(--line);
  padding-top: 16px;
}

.taxonomy-heading {
  margin-bottom: 9px;
  color: var(--muted);
  font-size: 13px;
}

.taxonomy-item {
  display: block;
  width: 100%;
  min-height: 42px;
  margin-bottom: 7px;
  border: 1px solid transparent;
  border-radius: 8px;
  background: transparent;
  color: #d9ddea;
  padding: 8px 10px;
  text-align: left;
}

.taxonomy-item span {
  display: block;
  margin-top: 3px;
  color: var(--muted);
  font-size: 12px;
}

.taxonomy-item:hover,
.taxonomy-item.active {
  border-color: rgba(122, 92, 255, 0.42);
  background: rgba(122, 92, 255, 0.12);
}

.sop .taxonomy-item {
  min-height: 34px;
}

.library {
  min-height: 680px;
  padding: 18px;
}

.library-head {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 14px;
}

.library-head p {
  margin: 5px 0 0;
  color: var(--muted);
  font-size: 13px;
}

select {
  height: 36px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #111219;
  color: var(--text);
  padding: 0 10px;
}

.cards {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(224px, 1fr));
  gap: 16px;
}

.template-card {
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #151720;
  box-shadow: 0 10px 24px rgba(0, 0, 0, 0.16);
}

.template-card:hover {
  border-color: rgba(122, 92, 255, 0.55);
  transform: translateY(-2px);
  transition: 0.18s ease;
}

.thumb {
  position: relative;
  height: 224px;
  overflow: hidden;
  background: var(--thumb);
}

.thumb::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(to top, rgba(0, 0, 0, 0.66), transparent 52%),
    linear-gradient(135deg, rgba(255, 255, 255, 0.12), transparent 58%);
  z-index: 1;
}

.thumb::after {
  content: "";
  position: absolute;
  inset: 58px 18px 54px;
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.08);
  backdrop-filter: blur(2px);
  z-index: 1;
}

.thumb-image {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.cover-mark {
  position: absolute;
  z-index: 2;
  left: 28px;
  right: 28px;
  top: 80px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  overflow: hidden;
  color: rgba(255, 255, 255, 0.88);
  font-size: 25px;
  font-weight: 900;
  text-align: center;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.cover-mark .platform-icon {
  width: 30px;
  height: 30px;
  border-radius: 9px;
  font-size: 14px;
}

.tag,
.audience,
.duration,
.file-type {
  position: absolute;
  z-index: 2;
  border-radius: 6px;
  padding: 4px 7px;
  font-size: 12px;
  font-weight: 700;
}

.tag {
  top: 8px;
  left: 8px;
  background: rgba(54, 211, 153, 0.18);
  color: #75f0c1;
}

.tag.hot {
  background: rgba(255, 138, 61, 0.18);
  color: #ffae72;
}

.audience {
  top: 8px;
  right: 8px;
  background: rgba(0, 0, 0, 0.5);
  color: white;
}

.duration {
  right: 8px;
  bottom: 8px;
  background: white;
  color: #171922;
}

.file-type {
  left: 8px;
  bottom: 8px;
  background: rgba(0, 0, 0, 0.58);
}

.thumb-title {
  position: absolute;
  z-index: 2;
  left: 13px;
  right: 13px;
  bottom: 44px;
  color: white;
  font-size: 15px;
  font-weight: 800;
  line-height: 1.35;
  text-shadow: 0 1px 8px rgba(0, 0, 0, 0.56);
}

.card-body {
  padding: 13px;
}

.meta-line {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
}

.meta-line strong {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.meta-line span,
.path {
  color: var(--muted);
  font-size: 12px;
}

.path {
  margin: 8px 0 0;
}

.learn-line {
  margin-top: 10px;
  border-top: 1px solid var(--line);
  padding-top: 10px;
  color: #d9deeb;
  font-size: 13px;
  line-height: 1.45;
}

.material-link {
  display: block;
  margin-top: 10px;
  border: 1px solid rgba(41, 231, 255, 0.2);
  border-radius: 8px;
  background: rgba(41, 231, 255, 0.08);
  color: #b7eff7;
  padding: 8px 10px;
  text-align: center;
  text-decoration: none;
  font-size: 13px;
  font-weight: 800;
}

.empty-state {
  grid-column: 1 / -1;
  border: 1px dashed rgba(255, 255, 255, 0.16);
  border-radius: 8px;
  padding: 48px;
  text-align: center;
  color: var(--muted);
}

.upload-modal {
  width: min(760px, calc(100vw - 48px));
  border: 1px solid var(--line);
  border-radius: 12px;
  background: #151721;
  color: var(--text);
  box-shadow: var(--shadow);
  padding: 0;
}

.upload-modal::backdrop {
  background: rgba(0, 0, 0, 0.62);
}

.upload-modal form {
  padding: 20px;
}

.modal-head,
.modal-actions {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.icon-button {
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  background: var(--panel-soft);
  font-size: 22px;
}

.upload-drop {
  display: grid;
  place-items: center;
  gap: 7px;
  margin: 18px 0;
  border: 1px dashed rgba(122, 92, 255, 0.5);
  border-radius: 8px;
  background: rgba(122, 92, 255, 0.08);
  padding: 28px;
}

.upload-drop span {
  color: var(--muted);
  font-size: 13px;
}

.upload-drop input {
  width: min(100%, 320px);
  height: auto;
  border: 1px solid rgba(122, 92, 255, 0.35);
  background: rgba(255, 255, 255, 0.05);
  padding: 10px;
}

.upload-icon {
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: var(--purple);
  font-size: 20px;
  font-weight: 800;
}

.form-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

label {
  display: grid;
  gap: 7px;
  color: #cbd0de;
  font-size: 13px;
}

input,
textarea {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #101119;
  color: var(--text);
  padding: 0 11px;
}

input {
  height: 38px;
}

.wide-field {
  margin-top: 12px;
}

textarea {
  min-height: 92px;
  resize: vertical;
  padding-top: 10px;
}

.modal-actions {
  justify-content: flex-end;
  margin-top: 18px;
}

@media (max-width: 900px) {
  body {
    min-width: 0;
  }

  .app-shell {
    grid-template-columns: 1fr;
  }

  .sidebar {
    position: static;
    height: auto;
    max-height: none;
  }

  .topbar,
  .filter-panel,
  .content-grid {
    grid-template-columns: 1fr;
    flex-direction: column;
    align-items: stretch;
  }

  .topbar {
    display: grid;
  }

  .topbar-actions,
  .brand-hero,
  .form-grid {
    grid-template-columns: 1fr;
    display: grid;
  }

  .search {
    width: 100%;
  }

  .brand-hero {
    grid-template-columns: 1fr;
  }

  .slogan-core span {
    font-size: 28px;
  }

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

  .thumb {
    height: 188px;
  }

  .upload-modal {
    width: calc(100vw - 20px);
  }

  .learning-grid {
    grid-template-columns: 1fr;
  }

  .taxonomy {
    position: static;
  }
}

@media (max-width: 520px) {
  .workspace {
    padding: 16px 12px 24px;
  }

  .sidebar {
    padding: 14px 10px;
  }

  .cards {
    grid-template-columns: 1fr;
  }

  .topbar-actions {
    gap: 8px;
  }

  .primary-button,
  .ghost-button {
    width: 100%;
  }
}