:root {
  --kb-bg: #1b1240;
  --kb-panel: #2a1f52;
  --kb-panel-light: #4a3a82;
  --kb-panel-dark: #170f33;
  --kb-accent: #ffd76b;
  --kb-text: #f0e9ff;
  --kb-muted: #cbb8ff;
  --kb-danger: #ff8a8a;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-height: 100vh;
  background: var(--kb-bg);
  color: var(--kb-text);
  font-family: 'Segoe UI', system-ui, sans-serif;
}

.hidden { display: none !important; }

button { font-family: inherit; }

/* ---------- Login (matches the asset editor's look) ---------- */

.login-screen {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
}

.login-box {
  background: var(--kb-panel);
  border: 2px solid var(--kb-panel-light);
  border-radius: 12px;
  padding: 28px 32px;
  width: 100%;
  max-width: 320px;
  text-align: center;
}

.login-box h1 { margin: 0 0 6px; font-size: 22px; }

.login-sub { margin: 0 0 16px; font-size: 13px; color: var(--kb-muted); }

.login-box input[type="password"] {
  width: 100%;
  padding: 10px 12px;
  font-size: 14px;
  border-radius: 6px;
  border: 2px solid var(--kb-panel-light);
  background: var(--kb-panel-dark);
  color: var(--kb-text);
  margin-bottom: 10px;
}

.login-box button {
  width: 100%;
  padding: 10px;
  font-size: 14px;
  font-weight: bold;
  border-radius: 6px;
  border: none;
  background: var(--kb-accent);
  color: #2b1b00;
  cursor: pointer;
}

.login-error { margin-top: 10px; color: var(--kb-danger); font-size: 13px; }

/* ---------- Board ---------- */

.board-screen {
  min-height: 100vh;
  padding: 20px 24px;
}

.board-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 16px;
}

.board-header h1 { margin: 0; font-size: 20px; }

.board-header-actions { display: flex; gap: 8px; }

.board-error {
  background: #4a1f1f;
  border: 1px solid var(--kb-danger);
  color: var(--kb-danger);
  padding: 8px 12px;
  border-radius: 6px;
  margin-bottom: 12px;
  font-size: 13px;
}

.tiny-btn {
  padding: 6px 12px;
  font-size: 13px;
  border-radius: 6px;
  border: 2px solid var(--kb-panel-light);
  background: var(--kb-panel);
  color: var(--kb-text);
  cursor: pointer;
  text-decoration: none;
  display: inline-block;
}

.tiny-btn:hover { background: var(--kb-panel-light); }

.tiny-btn:disabled {
  opacity: 0.4;
  cursor: default;
  background: var(--kb-panel);
}

.danger-btn { border-color: var(--kb-danger); color: var(--kb-danger); }

.action-btn {
  padding: 8px 16px;
  font-size: 14px;
  font-weight: bold;
  border-radius: 6px;
  border: none;
  background: var(--kb-accent);
  color: #2b1b00;
  cursor: pointer;
}

.board-columns {
  display: flex;
  gap: 16px;
  align-items: flex-start;
  overflow-x: auto;
  padding-bottom: 12px;
}

.kb-column {
  background: var(--kb-panel);
  border: 2px solid var(--kb-panel-light);
  border-radius: 10px;
  padding: 10px;
  width: 260px;
  min-width: 260px;
  flex-shrink: 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.kb-column-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
}

.kb-column.column-dragging { opacity: 0.4; }

.kb-column-drag-handle {
  cursor: grab;
  color: var(--kb-muted);
  font-size: 14px;
  line-height: 1;
  padding: 0 2px;
  user-select: none;
  flex-shrink: 0;
}

.kb-column-drag-handle:hover { color: var(--kb-text); }

.kb-column-title {
  font-weight: bold;
  font-size: 14px;
  cursor: text;
  flex: 1;
  word-break: break-word;
}

.kb-column-title:hover { color: var(--kb-accent); }

.kb-column-delete-btn {
  border: none;
  background: transparent;
  color: var(--kb-muted);
  cursor: pointer;
  font-size: 14px;
  padding: 2px 6px;
  border-radius: 4px;
}

.kb-column-delete-btn:hover { color: var(--kb-danger); background: var(--kb-panel-dark); }

.kb-cards {
  display: flex;
  flex-direction: column;
  gap: 8px;
  min-height: 40px;
}

.kb-card {
  background: var(--kb-panel-dark);
  border: 1px solid var(--kb-panel-light);
  border-radius: 8px;
  padding: 8px 10px;
  cursor: grab;
}

.kb-card.dragging { opacity: 0.4; }

.kb-card.locked {
  background: #4a1f1f;
  border: 1px solid var(--kb-danger);
  cursor: default;
}

.kb-card-lock-icon {
  font-size: 12px;
  flex-shrink: 0;
  padding: 0 2px;
}

.kb-card-header-row {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 6px;
}

.kb-card-title {
  font-size: 13px;
  font-weight: 600;
  word-break: break-word;
}

.kb-card-edit-btn {
  border: none;
  background: transparent;
  cursor: pointer;
  font-size: 12px;
  padding: 0 2px;
  line-height: 1;
  flex-shrink: 0;
}

.kb-card-desc {
  margin-top: 4px;
  font-size: 12px;
  color: var(--kb-muted);
  white-space: pre-wrap;
  word-break: break-word;
}

.kb-card-update-line {
  margin-top: 4px;
  font-size: 11px;
  color: var(--kb-muted);
  white-space: pre-wrap;
  word-break: break-word;
}

.kb-card-update-label {
  font-weight: bold;
  text-transform: uppercase;
  letter-spacing: 0.3px;
  color: var(--kb-accent);
  margin-right: 4px;
}

.kb-card-view-updates-btn {
  display: block;
  margin-top: 6px;
  border: 1px solid var(--kb-panel-light);
  background: transparent;
  color: var(--kb-muted);
  border-radius: 6px;
  padding: 3px 6px;
  font-size: 11px;
  cursor: pointer;
  width: 100%;
}

.kb-card-view-updates-btn:hover { color: var(--kb-text); border-color: var(--kb-accent); }

.kb-add-card-btn {
  border: 1px dashed var(--kb-panel-light);
  background: transparent;
  color: var(--kb-muted);
  border-radius: 6px;
  padding: 6px;
  font-size: 12px;
  cursor: pointer;
}

.kb-add-card-btn:hover { color: var(--kb-text); border-color: var(--kb-accent); }

/* ---------- Card modal ---------- */

.kb-modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.55);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 10;
}

.kb-modal-dialog {
  background: var(--kb-panel);
  border: 2px solid var(--kb-panel-light);
  border-radius: 10px;
  padding: 16px;
  width: 100%;
  max-width: 420px;
}

.kb-modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 10px;
}

.kb-modal-title { font-weight: bold; font-size: 15px; }

.kb-modal-body { display: flex; flex-direction: column; gap: 4px; }

.kb-field-label { font-size: 12px; color: var(--kb-muted); margin-top: 8px; }

.kb-modal-body input[type="text"],
.kb-modal-body textarea {
  width: 100%;
  padding: 8px 10px;
  font-size: 13px;
  border-radius: 6px;
  border: 2px solid var(--kb-panel-light);
  background: var(--kb-panel-dark);
  color: var(--kb-text);
  font-family: inherit;
  resize: vertical;
}

.kb-modal-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 8px;
  margin-top: 14px;
}

/* ---------- Card attachments ---------- */

.kb-attachments-list {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.kb-attachment-item {
  display: flex;
  align-items: center;
  gap: 8px;
  background: var(--kb-panel-dark);
  border: 1px solid var(--kb-panel-light);
  border-radius: 6px;
  padding: 4px 8px;
}

.kb-attachment-thumb {
  width: 32px;
  height: 32px;
  object-fit: cover;
  border-radius: 4px;
  flex-shrink: 0;
}

.kb-attachment-icon {
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  flex-shrink: 0;
}

.kb-attachment-link {
  flex: 1;
  font-size: 12px;
  color: var(--kb-text);
  text-decoration: none;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.kb-attachment-link:hover { color: var(--kb-accent); }

.kb-attachment-size {
  font-size: 10px;
  color: var(--kb-muted);
  flex-shrink: 0;
}

.kb-attachment-remove-btn {
  border: none;
  background: transparent;
  color: var(--kb-muted);
  cursor: pointer;
  font-size: 13px;
  flex-shrink: 0;
}

.kb-attachment-remove-btn:hover { color: var(--kb-danger); }

.kb-attachment-status {
  font-size: 11px;
  color: var(--kb-muted);
  margin: 0;
}

.kb-attachment-status.error { color: var(--kb-danger); }

/* ---------- Updates viewer ---------- */

.kb-updates-position {
  font-size: 11px;
  color: var(--kb-muted);
  text-align: center;
}

.kb-updates-timestamp {
  font-size: 11px;
  color: var(--kb-muted);
  text-align: center;
  margin-bottom: 8px;
  font-style: italic;
}

.kb-updates-text {
  font-size: 13px;
  min-height: 100px;
}

.kb-updates-text:disabled {
  opacity: 0.6;
  cursor: default;
}

.kb-updates-locked-hint {
  font-size: 11px;
  color: var(--kb-danger);
  text-align: center;
  margin-top: 6px;
}

/* ---------- Archive viewer ---------- */

.kb-archive-dialog { max-width: 520px; }

#archive-search-input { margin-bottom: 8px; }

.kb-archive-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
  max-height: 50vh;
  overflow-y: auto;
}

.kb-archive-item {
  background: var(--kb-panel-dark);
  border: 1px solid var(--kb-panel-light);
  border-radius: 8px;
  padding: 8px 10px;
}

.kb-archive-item-title { font-size: 13px; font-weight: 600; }

.kb-archive-item-meta {
  font-size: 11px;
  color: var(--kb-muted);
  margin: 2px 0 6px;
}

.kb-archive-item-actions { display: flex; gap: 6px; }

.kb-archive-empty-hint {
  text-align: center;
  font-size: 12px;
  color: var(--kb-muted);
}