/* ── Buttons ─────────────────────────────────────────────── */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-xs);
  padding: var(--space-sm) var(--space-lg);
  border: none;
  border-radius: var(--border-radius);
  font-size: var(--font-size-md);
  font-family: var(--font-family);
  cursor: pointer;
  transition: background 0.15s, opacity 0.15s;
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.btn-primary {
  background: var(--color-primary);
  color: #fff;
}

.btn-primary:hover:not(:disabled) {
  background: var(--color-primary-hover);
}

.btn-danger {
  background: var(--color-danger);
  color: #fff;
}

.btn-danger:hover:not(:disabled) {
  background: var(--color-danger-hover);
}

.btn-outline {
  background: transparent;
  border: 1px solid var(--color-border);
  color: var(--color-text);
}

.btn-outline:hover:not(:disabled) {
  background: var(--color-bg-secondary);
}

.btn-sm {
  padding: var(--space-xs) var(--space-sm);
  font-size: var(--font-size-sm);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-sm);
  background: var(--color-bg);
  color: var(--color-text);
  cursor: pointer;
  transition: background 0.15s;
}

.btn-sm:hover:not(:disabled) {
  background: var(--color-bg-secondary);
}

.btn-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border: none;
  border-radius: var(--border-radius-sm);
  background: transparent;
  color: var(--color-text);
  font-size: var(--font-size-lg);
  cursor: pointer;
  transition: background 0.15s;
}

.btn-icon:hover {
  background: var(--color-bg-secondary);
}

.btn-block {
  width: 100%;
}

/* ── Inputs ──────────────────────────────────────────────── */

.form-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
  margin-bottom: var(--space-md);
}

.form-label {
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--color-text-secondary);
}

.form-input,
.form-select,
.form-textarea {
  width: 100%;
  padding: var(--space-sm) var(--space-md);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-sm);
  font-size: var(--font-size-md);
  font-family: var(--font-family);
  color: var(--color-text);
  background: var(--color-bg);
  transition: border-color 0.15s;
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--color-primary);
}

.form-textarea {
  min-height: 120px;
  resize: vertical;
  line-height: 1.6;
}

.form-input::placeholder {
  color: var(--color-text-secondary);
}

.password-field {
  position: relative;
}

.password-field .form-input {
  padding-right: 2.5rem;
}

.password-toggle {
  position: absolute;
  top: 50%;
  right: var(--space-sm);
  transform: translateY(-50%);
  background: transparent;
  border: 0;
  padding: 2px 4px;
  font-size: var(--font-size-md);
  line-height: 1;
  cursor: pointer;
  color: var(--color-text-secondary);
}

.password-toggle:hover {
  color: var(--color-text);
}

.form-error {
  color: var(--color-danger);
  font-size: var(--font-size-sm);
}

.form-success {
  color: var(--color-success);
  font-size: var(--font-size-sm);
}

.server-info {
  text-align: center;
  margin-bottom: var(--space-md);
}

/* ── Cards ───────────────────────────────────────────────── */

.card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius);
  padding: var(--space-md);
  transition: background 0.15s;
}

.card-clickable {
  cursor: pointer;
}

.card-clickable:hover {
  background: var(--color-bg-secondary);
}

.card + .card {
  margin-top: var(--space-sm);
}

.card-title {
  font-size: var(--font-size-md);
  font-weight: 600;
  margin-bottom: var(--space-xs);
}

.card-meta {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
}

/* ── Badges ──────────────────────────────────────────────── */

.badge {
  display: inline-block;
  padding: 2px var(--space-sm);
  border-radius: 10px;
  font-size: var(--font-size-xs);
  font-weight: 500;
  line-height: 1.4;
}

.badge-status-todo        { background: var(--status-todo);        color: #fff; }
.badge-status-in_progress { background: var(--status-in-progress); color: #fff; }
.badge-status-done        { background: var(--status-done);        color: #fff; }

.badge-priority-low    { background: #EDF2F7; color: var(--priority-low); }
.badge-priority-medium { background: #FEF3CD; color: #856404; }
.badge-priority-high   { background: #F8D7DA; color: var(--priority-high); }

/* ── Tags ────────────────────────────────────────────────── */

.tag {
  display: inline-block;
  padding: 2px var(--space-sm);
  border-radius: var(--border-radius-sm);
  font-size: var(--font-size-xs);
  line-height: 1.4;
}

.tags-row {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xs);
}

/* ── Lists ───────────────────────────────────────────────── */

.list-item {
  padding: var(--space-md);
  border-bottom: 1px solid var(--color-border);
  cursor: pointer;
  transition: background 0.15s;
}

.list-item:hover {
  background: var(--color-bg-secondary);
}

.list-item:last-child {
  border-bottom: none;
}

/* ── Divider ─────────────────────────────────────────────── */

.divider {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  margin: var(--space-md) 0;
  color: var(--color-text-secondary);
  font-size: var(--font-size-sm);
}

.divider::before,
.divider::after {
  content: '';
  flex: 1;
  border-bottom: 1px solid var(--color-border);
}

/* ── Confirm Dialog ──────────────────────────────────────── */

.dialog-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.4);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 900;
}

.dialog-box,
.dialog {
  background: var(--color-bg);
  border-radius: var(--border-radius);
  padding: var(--space-xl);
  max-width: 320px;
  width: 90%;
}

.dialog-title {
  font-size: var(--font-size-lg);
  font-weight: 600;
  margin-bottom: var(--space-sm);
}

.dialog-message {
  font-size: var(--font-size-md);
  color: var(--color-text-secondary);
  margin-bottom: var(--space-lg);
}

.dialog-actions {
  display: flex;
  justify-content: flex-end;
  gap: var(--space-sm);
}

/* ── Move-task folder browser ───────────────────────────── */

.move-breadcrumb {
  font-size: 12px;
  color: var(--color-text-secondary, #64748b);
  margin: var(--space-sm) 0;
  padding: 6px 8px;
  background: #f8fafc;
  border-radius: 6px;
  word-break: break-all;
}

.move-breadcrumb a {
  color: #6366f1;
  text-decoration: none;
}

.move-breadcrumb a:hover {
  text-decoration: underline;
}

.move-list {
  max-height: 320px;
  overflow-y: auto;
  border: 1px solid #e5e7eb;
  border-radius: 8px;
  padding: 4px;
}

.move-row {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 10px;
  border-radius: 6px;
  cursor: pointer;
  transition: background 0.1s;
}

.move-row:hover {
  background: #eef2ff;
}

.move-row--self {
  background: #ecfdf5;
  color: #047857;
  font-weight: 600;
  margin-bottom: 4px;
}

.move-row--self:hover {
  background: #d1fae5;
}

.move-row--disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.move-row--disabled:hover {
  background: transparent;
}

.move-row-icon {
  flex-shrink: 0;
  font-size: 14px;
}

.move-row-name {
  flex: 1;
  font-size: 13px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.move-row-chev {
  flex-shrink: 0;
  color: #94a3b8;
  font-size: 18px;
  font-weight: 600;
}

.move-empty {
  padding: 16px;
  text-align: center;
}

/* ── Pagination ──────────────────────────────────────────── */

.pagination {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-md) 0;
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
}

/* ── Empty state ─────────────────────────────────────────── */

.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--space-xl);
  color: var(--color-text-secondary);
  text-align: center;
}

.empty-state-icon {
  font-size: 48px;
  margin-bottom: var(--space-md);
  opacity: 0.5;
}

.empty-state-text {
  font-size: var(--font-size-md);
}

/* ── Filter bar ──────────────────────────────────────────── */

.filter-bar {
  display: flex;
  gap: var(--space-sm);
  padding: var(--space-sm) 0;
  flex-wrap: wrap;
}

.filter-bar .form-select,
.filter-bar .form-input {
  padding: var(--space-xs) var(--space-sm);
  font-size: var(--font-size-sm);
  flex: 1;
  min-width: 0;
}

/* ── Markdown body ───────────────────────────────────────── */

.markdown-body {
  font-size: var(--font-size-md);
  line-height: 1.7;
  word-wrap: break-word;
}

.markdown-body h1 { font-size: 1.4em; margin: 0.8em 0 0.4em; font-weight: 600; }
.markdown-body h2 { font-size: 1.2em; margin: 0.8em 0 0.4em; font-weight: 600; }
.markdown-body h3 { font-size: 1.1em; margin: 0.6em 0 0.3em; font-weight: 600; }

.markdown-body p { margin: 0.5em 0; }

.markdown-body ul,
.markdown-body ol {
  padding-left: 1.5em;
  margin: 0.5em 0;
}

.markdown-body li { margin: 0.2em 0; }

.markdown-body code {
  background: var(--color-bg-secondary);
  padding: 2px 4px;
  border-radius: 3px;
  font-size: 0.9em;
}

.markdown-body pre {
  background: var(--color-bg-secondary);
  padding: var(--space-md);
  border-radius: var(--border-radius-sm);
  overflow-x: auto;
  margin: 0.5em 0;
}

.markdown-body pre code {
  background: none;
  padding: 0;
}

.markdown-body blockquote {
  border-left: 3px solid var(--color-border);
  padding-left: var(--space-md);
  color: var(--color-text-secondary);
  margin: 0.5em 0;
}

.markdown-body table {
  width: 100%;
  border-collapse: collapse;
  margin: 0.5em 0;
  font-size: var(--font-size-sm);
}

.markdown-body th,
.markdown-body td {
  border: 1px solid var(--color-border);
  padding: var(--space-xs) var(--space-sm);
  text-align: left;
}

.markdown-body th {
  background: var(--color-bg-secondary);
  font-weight: 600;
}

.markdown-body a {
  color: var(--color-primary);
  text-decoration: none;
}

.markdown-body a:hover {
  text-decoration: underline;
}

.markdown-body img {
  max-width: 100%;
  height: auto;
  border-radius: var(--border-radius-sm);
}

.markdown-body hr {
  border: none;
  border-top: 1px solid var(--color-border);
  margin: 0.8em 0;
}

/* ── Color input ─────────────────────────────────────────── */

.color-input {
  width: 32px;
  height: 32px;
  padding: 2px;
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-sm);
  cursor: pointer;
  background: none;
}

/* ── Subtask tree ────────────────────────────────────────── */

.subtask-tree {
  list-style: none;
  margin: 0;
  padding: 0;
}

.subtask-item {
  padding: var(--space-xs) 0;
  font-size: var(--font-size-sm);
}

.subtask-link:hover {
  text-decoration: underline;
  color: var(--color-primary);
}

/* ── Checklist ───────────────────────────────────────────── */

.checklist-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
}

.checklist-item {
  padding: var(--space-xs) 0;
  border-bottom: 1px solid var(--color-border);
}

.checklist-item:last-child {
  border-bottom: none;
}

.checklist-row {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.checklist-check {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
  cursor: pointer;
}

.checklist-content {
  flex: 1;
  font-size: var(--font-size-sm);
  cursor: pointer;
  word-break: break-word;
}

.checklist-content.done {
  color: var(--color-text-secondary);
  text-decoration: line-through;
}

.checklist-note-btn,
.checklist-del {
  background: none;
  border: none;
  cursor: pointer;
  font-size: 0.9rem;
  padding: 2px 4px;
  opacity: 0.6;
}

.checklist-note-btn:hover,
.checklist-del:hover {
  opacity: 1;
}

.checklist-note-wrap {
  margin-top: var(--space-xs);
  padding-left: 24px;
}

.checklist-note-input {
  font-size: var(--font-size-sm);
  min-height: 48px;
  resize: vertical;
}

.checklist-note-preview {
  margin-top: 4px;
  margin-left: 24px;
  padding: 6px 10px;
  background: var(--color-bg-secondary);
  border-left: 3px solid var(--color-border);
  border-radius: 0 6px 6px 0;
  font-size: var(--font-size-xs);
  color: var(--color-text-secondary);
  white-space: pre-wrap;
  word-break: break-word;
}

/* ── Inline attachments on todo detail ──────────────────── */

.att-inline-row {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-xs) var(--space-sm);
  border-bottom: 1px solid var(--color-border);
}

.att-inline-row:last-child {
  border-bottom: none;
}

.att-inline-main {
  flex: 1;
  min-width: 0;
  cursor: pointer;
}

.att-inline-name {
  font-size: var(--font-size-sm);
  font-weight: 500;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.att-inline-meta {
  font-size: var(--font-size-xs);
  color: var(--color-text-secondary);
  margin-top: 2px;
}

.att-inline-actions {
  display: flex;
  gap: var(--space-xs);
  flex-shrink: 0;
}

/* ── File preview overlay ───────────────────────────────── */

.file-preview-overlay {
  position: fixed;
  inset: 0;
  z-index: 9999;
  background: rgba(15, 23, 42, 0.85);
  display: flex;
  flex-direction: column;
  padding: 20px;
  gap: 12px;
}

.file-preview-header {
  display: flex;
  align-items: center;
  gap: 12px;
  color: #fff;
  flex-shrink: 0;
}

.file-preview-title {
  flex: 1;
  min-width: 0;
  font-weight: 500;
  font-size: 14px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.file-preview-actions {
  display: flex;
  gap: 8px;
  flex-shrink: 0;
}

.file-preview-btn {
  background: rgba(255, 255, 255, 0.12);
  color: #fff;
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 8px;
  padding: 6px 12px;
  font-size: 13px;
  cursor: pointer;
  transition: background 0.15s;
}

.file-preview-btn:hover {
  background: rgba(255, 255, 255, 0.22);
}

.file-preview-body {
  flex: 1;
  min-height: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #fff;
  border-radius: 12px;
  overflow: auto;
}

.file-preview-loading,
.file-preview-error,
.file-preview-fallback {
  padding: 32px;
  color: #475569;
  text-align: center;
}

.file-preview-error {
  color: #dc2626;
}

.file-preview-img {
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
  display: block;
}

.file-preview-video {
  max-width: 100%;
  max-height: 100%;
}

.file-preview-audio {
  width: 80%;
  max-width: 500px;
}

.file-preview-pdf {
  width: 100%;
  height: 100%;
  border: none;
}

.file-preview-text {
  width: 100%;
  max-height: 100%;
  margin: 0;
  padding: 20px;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 13px;
  line-height: 1.55;
  color: #1e293b;
  background: #f8fafc;
  white-space: pre-wrap;
  word-break: break-word;
  overflow: auto;
}

/* ── Tag picker ──────────────────────────────────────────── */

.tag-picker {
  width: 100%;
}

.tag-removable {
  cursor: default;
  padding-right: var(--space-xs);
}

.tag-remove {
  cursor: pointer;
  margin-left: var(--space-xs);
  font-weight: bold;
  opacity: 0.7;
}

.tag-remove:hover {
  opacity: 1;
}

/* ── Todo meta ───────────────────────────────────────────── */

.todo-meta {
  padding-bottom: var(--space-md);
  border-bottom: 1px solid var(--color-border);
}

/* ── Stats (admin) ──────────────────────────────────────── */

.progress-bar-bg {
  height: 8px;
  background: var(--color-bg-secondary);
  border-radius: 4px;
  overflow: hidden;
}

.progress-bar-fill {
  height: 100%;
  background: var(--color-success);
  border-radius: 4px;
  transition: width 0.3s ease;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-sm);
  text-align: center;
}

.stats-item {
  padding: var(--space-sm);
  background: var(--color-bg-secondary);
  border-radius: var(--border-radius-sm);
}

.stats-value {
  font-size: var(--font-size-lg);
  font-weight: 600;
}

.stats-label {
  font-size: var(--font-size-xs);
  color: var(--color-text-secondary);
}

/* ── Role badges ────────────────────────────────────────── */

.badge-role {
  display: inline-block;
  padding: 1px var(--space-xs);
  border-radius: var(--border-radius-sm);
  font-size: var(--font-size-xs);
  font-weight: 500;
  line-height: 1.4;
}

.badge-role-admin {
  background: var(--color-primary);
  color: #fff;
}

.badge-role-member {
  background: var(--color-bg-secondary);
  color: var(--color-text-secondary);
}

/* ── Tree indentation ───────────────────────────────────── */

.tree-indent {
  padding-left: 20px;
}

.mb-xs { margin-bottom: var(--space-xs); }

/* ── Tab Bar ────────────────────────────────────────────── */

.tab-bar {
  display: flex;
  justify-content: space-around;
  align-items: center;
  height: var(--tab-bar-height);
  border-top: 1px solid var(--color-border);
  background: var(--color-bg);
  padding: 0;
}

.tab-bar-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2px;
  flex: 1;
  height: 100%;
  border: none;
  background: transparent;
  color: var(--color-text-secondary);
  cursor: pointer;
  transition: color 0.15s;
  font-family: var(--font-family);
  padding: 0;
  -webkit-tap-highlight-color: transparent;
}

.tab-bar-item:hover {
  color: var(--color-text);
}

.tab-bar-item--active {
  color: var(--color-primary);
}

.tab-bar-icon {
  font-size: 20px;
  line-height: 1;
}

.tab-bar-label {
  font-size: var(--font-size-xs);
  line-height: 1;
}

/* ── Textarea Image Upload ──────────────────────────────── */

.textarea-wrapper {
  position: relative;
}

.upload-overlay {
  display: none;
  position: absolute;
  inset: 0;
  border: 2px dashed var(--color-primary);
  border-radius: var(--border-radius-sm);
  background: rgba(74, 144, 217, 0.08);
  z-index: 2;
  pointer-events: none;
  align-items: center;
  justify-content: center;
  font-size: var(--font-size-sm);
  color: var(--color-primary);
}

.textarea-wrapper.drag-over .upload-overlay {
  display: flex;
}

.upload-hint {
  font-size: var(--font-size-xs);
  color: var(--color-text-secondary);
  margin-left: var(--space-xs);
  font-weight: normal;
}

.upload-status {
  font-size: var(--font-size-xs);
  color: var(--color-text-secondary);
  margin-top: var(--space-xs);
  min-height: 1.2em;
}

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

/* ── Attachment Images in Markdown ──────────────────────── */

.attachment-image {
  max-width: 100%;
  height: auto;
  border-radius: var(--border-radius-sm);
  margin: var(--space-sm) 0;
}

.attachment-image-loading {
  display: inline-block;
  background: var(--color-bg-secondary);
  border-radius: var(--border-radius-sm);
  padding: var(--space-sm) var(--space-md);
  font-size: var(--font-size-xs);
  color: var(--color-text-secondary);
}

/* ── Markdown Editor ─────────────────────────────────────────── */

.md-editor {
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-sm);
  overflow: hidden;
}

.md-toolbar {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 2px;
  padding: 6px 8px;
  background: #f9fafb;
  border-bottom: 1px solid var(--color-border);
}

.md-toolbar-group {
  display: flex;
  align-items: center;
  gap: 1px;
  padding-right: 8px;
  border-right: 1px solid #e5e7eb;
  margin-right: 6px;
}

.md-toolbar-group:last-child {
  border-right: none;
  margin-right: 0;
  padding-right: 0;
}

.md-toolbar-spacer {
  flex: 1;
}

.upload-hint-inline {
  font-size: 11px;
  color: #9ca3af;
}

.md-tb {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 28px;
  height: 28px;
  padding: 0 6px;
  border: none;
  background: transparent;
  border-radius: 4px;
  font-size: 12px;
  color: #4b5563;
  cursor: pointer;
  font-family: inherit;
}

.md-tb:hover {
  background: #e5e7eb;
  color: #111827;
}

.md-tb--mode {
  font-weight: 500;
}

.md-tb--active {
  background: #4f46e5;
  color: #fff;
}

.md-tb--active:hover {
  background: #4338ca;
  color: #fff;
}

.md-body {
  display: flex;
  min-height: 300px;
}

.md-edit-pane {
  flex: 1;
  display: flex;
  flex-direction: column;
}

.md-edit-pane .textarea-wrapper {
  flex: 1;
  display: flex;
  flex-direction: column;
}

.md-edit-pane .form-textarea {
  flex: 1;
  border: none;
  border-radius: 0;
  resize: vertical;
  min-height: 300px;
  font-family: 'SF Mono', 'Menlo', 'Consolas', monospace;
  font-size: 13px;
  line-height: 1.6;
  padding: 12px;
}

.md-edit-pane .form-textarea:focus {
  outline: none;
  box-shadow: none;
}

.md-preview-pane {
  flex: 1;
  padding: 12px 16px;
  overflow-y: auto;
  border-left: 1px solid var(--color-border);
  background: #fff;
  font-size: 14px;
  line-height: 1.7;
}

/* Mode: edit only */
.md-body--edit .md-preview-pane { display: none; }
.md-body--edit .md-edit-pane { flex: 1; }

/* Mode: preview only */
.md-body--preview .md-edit-pane { display: none; }
.md-body--preview .md-preview-pane {
  flex: 1;
  border-left: none;
}

/* Mode: split */
.md-body--split .md-edit-pane { flex: 1; }
.md-body--split .md-preview-pane { flex: 1; }