:root {
  color-scheme: light;
  font-family: 'Inter', 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  --bg: #f6f7fb;
  --fg: #111827;
  --fg-muted: #4b5563;
  --card: #ffffff;
  --card-border: #e2e8f0;
  --accent: #6366f1;
  --accent-strong: #4f46e5;
  --accent-soft: rgba(99, 102, 241, 0.12);
  --radius-lg: 18px;
  --radius-md: 12px;
  --radius-sm: 8px;
  --divider: #d1d5db;
  background: var(--bg);
  color: var(--fg);
}

body {
  margin: 0;
  background: var(--bg);
}

.access-gate {
  position: fixed;
  inset: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2rem;
  overflow-y: auto;
  background: rgba(246, 247, 251, 0.96);
  box-sizing: border-box;
}

.access-gate[hidden] {
  display: none;
}

.access-card {
  width: min(440px, 100%);
  max-height: calc(100vh - 4rem);
  overflow-y: auto;
  background: var(--card);
  border: 1px solid rgba(99, 102, 241, 0.12);
  border-radius: var(--radius-lg);
  padding: 2rem;
  box-shadow: 0 45px 90px -40px rgba(15, 23, 42, 0.55);
}

.access-brand {
  margin-bottom: 1.5rem;
}

.access-brand h1 {
  margin: 0;
  font-size: 1.55rem;
}

.access-form {
  display: grid;
  gap: 1rem;
}

.access-form + .access-form {
  margin-top: 1.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid rgba(148, 163, 184, 0.25);
}

.access-form.hidden {
  display: none;
}

.access-form h2 {
  margin: 0;
  font-size: 1.2rem;
}

.access-form input,
.access-form textarea {
  padding: 0.7rem 0.8rem;
  border-radius: var(--radius-md);
  border: 1px solid rgba(148, 163, 184, 0.6);
  font-size: 0.95rem;
}

.link-button {
  background: transparent;
  color: var(--accent-strong);
  box-shadow: none;
  padding: 0.45rem 0.2rem;
}

.link-button:hover {
  background: rgba(99, 102, 241, 0.08);
  box-shadow: none;
}

.form-status {
  min-height: 1.2rem;
  margin: 0;
  color: var(--fg-muted);
  font-size: 0.9rem;
}

.email-action-panel {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  margin-top: 0.65rem;
}

.email-action-link,
.email-action-copy {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: auto;
  padding: 0.45rem 0.65rem;
  border-radius: var(--radius-sm);
  background: rgba(99, 102, 241, 0.1);
  color: var(--accent-strong);
  font-weight: 600;
  text-decoration: none;
  box-shadow: none;
}

.email-action-copy {
  border: none;
  cursor: pointer;
  font-size: 0.9rem;
}

.email-action-link:hover,
.email-action-copy:hover {
  background: rgba(99, 102, 241, 0.18);
  box-shadow: none;
}

.app-header {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem 2.5rem;
  background: linear-gradient(135deg, #334155, #1f2937);
  color: #f9fafb;
  box-shadow: 0 12px 30px rgba(15, 23, 42, 0.28);
}

.disconnect-button {
  flex-shrink: 0;
  width: auto;
  margin-left: 0.25rem;
  padding: 0.5rem 0.85rem;
  background: rgba(255, 255, 255, 0.14);
  color: #f9fafb;
  box-shadow: none;
}

.disconnect-button:hover {
  background: rgba(255, 255, 255, 0.22);
  box-shadow: none;
}

.brand {
  display: flex;
  align-items: center;
  gap: 1rem;
  flex: 1;
}

.app-brand {
  flex-wrap: wrap;
}

.header-balance {
  flex: 0;
}

.header-actions {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
}

.header-button {
  padding: 0.55rem 1.1rem;
  background: rgba(255, 255, 255, 0.15);
  color: #f9fafb;
}

.header-button.hidden {
  display: none;
}

.brand-icon {
  width: 44px;
  height: 44px;
  border-radius: 15px;
  background: radial-gradient(circle at 70% 30%, rgba(244, 114, 182, 0.6), transparent 60%),
    conic-gradient(from 90deg, rgba(59, 130, 246, 0.85), rgba(99, 102, 241, 0.9));
  box-shadow: 0 15px 30px rgba(99, 102, 241, 0.35);
}

.app-header h1 {
  margin: 0;
  font-size: 1.6rem;
  font-weight: 600;
  letter-spacing: 0.01em;
}

.breadcrumb {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  background: rgba(255, 255, 255, 0.15);
  padding: 0.4rem 0.8rem;
  border-radius: 999px;
  backdrop-filter: blur(10px);
  margin: 0 auto;
}

.breadcrumb span {
  color: rgba(255, 255, 255, 0.15);
}

.breadcrumb-item {
  background: none;
  border: none;
  color: #f9fafb;
  cursor: pointer;
  font-weight: 500;
  padding: 0.2rem 0.6rem;
  border-radius: 999px;
  transition: background 0.2s ease, color 0.2s ease;
}

.breadcrumb-item:hover {
  background: rgba(255, 255, 255, 0.18);
}

.app-main {
  display: grid;
  grid-template-columns: 320px 2fr 1fr;
  gap: 2.5rem;
  padding: 2.5rem;
  min-height: calc(100vh - 96px);
  box-sizing: border-box;
}

.sidebar {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.right-rail {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

body[data-view='home'] #ai-feedback-panel {
  display: none;
}

body[data-view='home'] #home-sidebar {
  display: flex;
}

body[data-view='home'] #ai-notifications-panel {
  display: block;
}

body[data-view='home'] #category-panel {
  display: none;
}

body[data-view='home'] #children-section {
  margin-top: 0;
}

body[data-view='home'] #notes-section {
  display: none;
}

body[data-view='category'] #ai-notifications-panel {
  display: none;
}

body[data-view='category'] #home-sidebar {
  display: none;
}

body[data-view='category'] .app-main {
  grid-template-columns: 2fr 1fr;
}

.ai-feedback {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.card {
  background: var(--card);
  border-radius: var(--radius-lg);
  padding: 1.6rem;
  border: 1px solid rgba(99, 102, 241, 0.06);
  box-shadow: 0 30px 70px -30px rgba(17, 24, 39, 0.45);
}

.card h2,
.card h3 {
  margin: 0 0 1rem;
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--fg);
}

.search-form {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.search-form input,
.search-form select {
  border: 1px solid rgba(79, 70, 229, 0.15);
  border-radius: var(--radius-md);
  padding: 0.65rem 0.75rem;
  font-size: 0.95rem;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.search-form input:focus,
.search-form select:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft);
}

.search-row {
  display: flex;
  gap: 0.65rem;
}

.search-row button {
  flex-shrink: 0;
}

button,
.import-label {
  padding: 0.65rem 0.9rem;
  border-radius: var(--radius-md);
  border: none;
  font-size: 0.95rem;
  font-weight: 500;
  background: linear-gradient(135deg, var(--accent), var(--accent-strong));
  color: #f9fafb;
  cursor: pointer;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}

button:hover,
.import-label:hover {
  transform: translateY(-1px);
  box-shadow: 0 12px 24px -10px rgba(99, 102, 241, 0.5);
}

button:active {
  transform: translateY(0);
}

.import-label {
  display: block;
  text-align: center;
}

.data-transfer {
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
}

#import-file {
  display: none;
}

.invite-requests {
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
}

.admin-only.hidden {
  display: none;
}

.invite-requests-list {
  display: grid;
  gap: 0.75rem;
}

.invite-request-item {
  border: 1px solid rgba(99, 102, 241, 0.12);
  border-radius: var(--radius-md);
  padding: 0.85rem;
  background: rgba(99, 102, 241, 0.06);
}

.invite-request-item p {
  margin: 0.35rem 0 0;
  color: var(--fg-muted);
  line-height: 1.45;
}

.invite-request-item .mailto-action {
  margin-top: 0.75rem;
}

.invite-request-meta {
  display: flex;
  justify-content: space-between;
  gap: 0.6rem;
  align-items: center;
  font-size: 0.85rem;
}

.invite-request-email {
  font-weight: 600;
  color: var(--fg);
  overflow-wrap: anywhere;
}

.invite-request-status {
  color: var(--accent-strong);
  text-transform: capitalize;
}

.invite-request-actions {
  display: flex;
  gap: 0.5rem;
  margin-top: 0.75rem;
}

.invite-request-actions button {
  padding: 0.45rem 0.6rem;
}

.notifications p {
  margin: 0;
  color: rgba(17, 24, 39, 0.6);
}

.content {
  display: flex;
  flex-direction: column;
  gap: 1.8rem;
}

.category-panel {
  background: var(--card);
  padding: 2rem;
  border-radius: var(--radius-lg);
  border: 1px solid rgba(79, 70, 229, 0.12);
  box-shadow: 0 40px 80px -40px rgba(17, 24, 39, 0.45);
  display: flex;
  flex-direction: column;
  gap: 1.2rem;
}

.category-panel.home-state .category-heading {
  display: none;
}

.category-panel.home-state .category-description {
  margin-top: 0;
}

.category-heading {
  display: flex;
  justify-content: space-between;
  gap: 1.2rem;
  flex-wrap: wrap;
  align-items: center;
}

.section-label {
  margin: 0;
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: rgba(99, 102, 241, 0.7);
}

.category-panel h2 {
  margin: 0.35rem 0 0;
  font-size: 1.9rem;
  font-weight: 600;
  letter-spacing: -0.015em;
}

.category-actions {
  display: flex;
  gap: 0.7rem;
  flex-wrap: wrap;
}

.category-description {
  margin: 1.2rem 0 0;
  color: var(--fg-muted);
  line-height: 1.7;
}

.children-section {
  padding: 1.8rem;
}

.children-section.hidden {
  display: none;
}

.tree-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 0.85rem;
}

.tree-item-row {
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.tree-item {
  width: 100%;
  background: rgba(99, 102, 241, 0.08);
  border: 1px solid rgba(99, 102, 241, 0.14);
  border-radius: var(--radius-md);
  padding: 0.95rem 1.05rem;
  text-align: left;
  font-weight: 500;
  color: var(--fg);
}

.tree-item:hover {
  background: rgba(99, 102, 241, 0.17);
}

.tree-item-delete {
  flex-shrink: 0;
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  line-height: 1;
}

.tree-item-delete:hover {
  background: rgba(99, 102, 241, 0.17);
}

.notes-section {
  padding: 2rem;
  padding-right: 5rem;
  display: flex;
  flex-direction: column;
  gap: 1.2rem;
}

.ai-comments-section {
  margin-top: 1.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid rgba(148, 163, 184, 0.25);
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.ai-comments-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
}

.ai-comment-actions.hidden {
  display: none;
}

.ai-comments-list {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.ai-comment {
  padding: 1.1rem 1.3rem;
  border-radius: var(--radius-lg);
  background: rgba(99, 102, 241, 0.06);
  border: 1px solid rgba(99, 102, 241, 0.12);
  box-shadow: none;
}

.ai-comment-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 0.9rem;
  margin-bottom: 0.75rem;
}

.ai-comment-model {
  font-weight: 600;
  color: var(--accent-strong);
}

.ai-comment-timestamp {
  color: var(--fg-muted);
  font-size: 0.85rem;
}

.ai-comment-actions {
  display: flex;
  gap: 0.5rem;
}

.ai-comment-actions button {
  background: rgba(99, 102, 241, 0.15);
  color: var(--accent-strong);
  padding: 0.4rem 0.6rem;
}

.ai-comment-content {
  white-space: pre-wrap;
  line-height: 1.6;
  color: var(--fg);
}

.ai-notifications {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 0.75rem;
}

.ai-notifications li {
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.notification-link {
  width: 100%;
  text-align: left;
  background: rgba(99, 102, 241, 0.1);
  color: var(--fg);
  border: 1px solid rgba(99, 102, 241, 0.16);
  border-radius: var(--radius-md);
  padding: 0.75rem 0.95rem;
}

.notification-dismiss {
  min-width: 32px;
  height: 32px;
  border: none;
  border-radius: 50%;
  background: rgba(17, 24, 39, 0.08);
  color: var(--fg);
  font-size: 1.1rem;
  line-height: 1;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.2s ease, transform 0.15s ease;
}

.notification-dismiss:hover {
  background: rgba(17, 24, 39, 0.18);
  transform: translateY(-1px);
}

.notification-dismiss:active {
  transform: translateY(0);
}

.notes-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
}

.notes-header h3 {
  margin: 0.2rem 0 0;
  font-size: 1.4rem;
}

.notes-actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  color: var(--fg-muted);
}

#autosave-status {
  font-size: 0.85rem;
  color: rgba(99, 102, 241, 0.9);
  font-weight: 500;
}

.note-editor {
  width: 100%;
  min-height: 420px;
  border: 1px solid rgba(148, 163, 184, 0.45);
  border-radius: var(--radius-lg);
  padding: 1.2rem 1.4rem;
  font-size: 1rem;
  line-height: 1.7;
  resize: vertical;
  background: rgba(249, 250, 251, 0.85);
  box-shadow: inset 0 2px 8px rgba(15, 23, 42, 0.05);
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.note-editor:focus {
  outline: none;
  border-color: var(--accent);
  background: #ffffff;
  box-shadow: 0 0 0 3px var(--accent-soft), inset 0 2px 8px rgba(15, 23, 42, 0.07);
}

.note-editor::placeholder {
  color: rgba(148, 163, 184, 0.9);
}

.modal {
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, 0.45);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2rem;
  box-sizing: border-box;
}

.modal-content {
  background: var(--card);
  border-radius: var(--radius-lg);
  padding: 2rem;
  width: min(420px, 90%);
  box-shadow: 0 45px 90px -40px rgba(15, 23, 42, 0.6);
}

.form-group {
  margin-bottom: 1.2rem;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.modal input,
.modal textarea {
  padding: 0.6rem 0.75rem;
  border-radius: var(--radius-md);
  border: 1px solid rgba(148, 163, 184, 0.6);
  font-size: 0.95rem;
}

.modal textarea {
  min-height: 110px;
  resize: vertical;
}

.form-actions {
  display: flex;
  justify-content: flex-end;
  gap: 0.65rem;
}

.modal[hidden] {
  display: none;
}

@media (max-width: 1120px) {
  .app-main {
    grid-template-columns: 1fr;
    gap: 1.8rem;
  }

  .sidebar {
    order: 2;
  }

  .content {
    order: 1;
  }
}

@media (max-width: 640px) {
  .app-header {
    flex-direction: column;
    gap: 1rem;
    padding: 1.5rem;
  }

  .access-gate {
    align-items: flex-start;
  }

  .access-card {
    max-height: none;
  }

  .disconnect-button {
    width: auto;
  }

  .app-main {
    padding: 1.5rem;
  }

  .category-heading {
    flex-direction: column;
    align-items: flex-start;
  }

  .category-actions {
    width: 100%;
  }

  button,
  .import-label {
    width: 100%;
  }
}