/* ===== MOTAI Neumorphism Theme ===== */

:root {
  --bg: #e8ecf1;
  --bg-alt: #e0e4e9;
  --surface: #e8ecf1;
  --text: #2d3436;
  --text-secondary: #636e72;
  --text-muted: #b2bec3;
  --primary: #6c5ce7;
  --primary-light: #a29bfe;
  --danger: #e17055;
  --danger-light: #fab1a0;
  --success: #00b894;
  --shadow-dark: #c8ccd3;
  --shadow-light: #ffffff;
  --shadow-dark-inset: #c4c8cf;
  --shadow-light-inset: #f0f4f8;
  --radius: 16px;
  --radius-sm: 10px;
  --radius-xs: 6px;
  --sidebar-width: 320px;
  --transition: 0.2s ease;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  line-height: 1.6;
}

/* ===== NEUMORPHISM BASE STYLES ===== */

.neumo {
  background: var(--surface);
  border-radius: var(--radius);
  box-shadow:
    8px 8px 16px var(--shadow-dark),
    -8px -8px 16px var(--shadow-light);
}

.neumo-inset {
  background: var(--surface);
  border-radius: var(--radius);
  box-shadow:
    inset 4px 4px 8px var(--shadow-dark-inset),
    inset -4px -4px 8px var(--shadow-light-inset);
}

.neumo-input {
  background: var(--surface);
  border: none;
  border-radius: var(--radius-sm);
  padding: 10px 16px;
  font-size: 14px;
  color: var(--text);
  box-shadow:
    inset 3px 3px 6px var(--shadow-dark-inset),
    inset -3px -3px 6px var(--shadow-light-inset);
  outline: none;
  transition: box-shadow var(--transition);
  width: 100%;
}
.neumo-input:focus {
  box-shadow:
    inset 2px 2px 4px var(--shadow-dark-inset),
    inset -2px -2px 4px var(--shadow-light-inset),
    0 0 0 2px var(--primary-light);
}

.neumo-input-sm {
  background: var(--surface);
  border: none;
  border-radius: var(--radius-xs);
  padding: 6px 8px;
  font-size: 12px;
  color: var(--text);
  box-shadow:
    inset 2px 2px 4px var(--shadow-dark-inset),
    inset -2px -2px 4px var(--shadow-light-inset);
  outline: none;
  transition: box-shadow var(--transition);
}
.neumo-input-sm:focus {
  box-shadow:
    inset 1px 1px 2px var(--shadow-dark-inset),
    inset -1px -1px 2px var(--shadow-light-inset),
    0 0 0 2px var(--primary-light);
}

.neumo-select {
  background: var(--surface);
  border: none;
  border-radius: var(--radius-sm);
  padding: 8px 12px;
  font-size: 13px;
  color: var(--text);
  box-shadow:
    inset 3px 3px 6px var(--shadow-dark-inset),
    inset -3px -3px 6px var(--shadow-light-inset);
  outline: none;
  cursor: pointer;
  transition: box-shadow var(--transition);
}
.neumo-select:focus {
  box-shadow: 0 0 0 2px var(--primary-light);
}

.neumo-btn {
  background: var(--surface);
  border: none;
  border-radius: var(--radius-sm);
  padding: 10px 24px;
  font-size: 14px;
  font-weight: 600;
  color: var(--text);
  cursor: pointer;
  box-shadow:
    4px 4px 8px var(--shadow-dark),
    -4px -4px 8px var(--shadow-light);
  transition: all var(--transition);
}
.neumo-btn:hover {
  box-shadow:
    6px 6px 12px var(--shadow-dark),
    -6px -6px 12px var(--shadow-light);
  transform: translateY(-1px);
}
.neumo-btn:active {
  box-shadow:
    inset 3px 3px 6px var(--shadow-dark-inset),
    inset -3px -3px 6px var(--shadow-light-inset);
  transform: translateY(1px);
}
.neumo-btn.primary {
  background: var(--primary);
  color: #fff;
  box-shadow:
    4px 4px 8px rgba(108, 92, 231, 0.3),
    -4px -4px 8px rgba(255, 255, 255, 0.5);
}
.neumo-btn.primary:hover {
  box-shadow:
    6px 6px 12px rgba(108, 92, 231, 0.4),
    -6px -6px 12px rgba(255, 255, 255, 0.5);
}
.neumo-btn.primary:active {
  box-shadow:
    inset 3px 3px 6px rgba(0, 0, 0, 0.2),
    inset -2px -2px 4px rgba(255, 255, 255, 0.1);
}

.neumo-btn-sm {
  background: var(--surface);
  border: none;
  border-radius: var(--radius-xs);
  padding: 6px 12px;
  font-size: 12px;
  cursor: pointer;
  box-shadow:
    2px 2px 4px var(--shadow-dark),
    -2px -2px 4px var(--shadow-light);
  transition: all var(--transition);
  color: var(--text);
}
.neumo-btn-sm:hover {
  box-shadow:
    3px 3px 6px var(--shadow-dark),
    -3px -3px 6px var(--shadow-light);
}
.neumo-btn-sm:active {
  box-shadow:
    inset 2px 2px 4px var(--shadow-dark-inset),
    inset -2px -2px 4px var(--shadow-light-inset);
}
.neumo-btn-sm.danger {
  color: var(--danger);
}
.neumo-btn-sm.danger:hover {
  background: var(--danger);
  color: #fff;
}

.neumo-btn-icon {
  background: var(--surface);
  border: none;
  border-radius: 50%;
  width: 36px;
  height: 36px;
  font-size: 18px;
  cursor: pointer;
  box-shadow:
    3px 3px 6px var(--shadow-dark),
    -3px -3px 6px var(--shadow-light);
  transition: all var(--transition);
  color: var(--text);
  display: flex;
  align-items: center;
  justify-content: center;
}
.neumo-btn-icon:hover {
  box-shadow:
    4px 4px 8px var(--shadow-dark),
    -4px -4px 8px var(--shadow-light);
}
.neumo-btn-icon:active {
  box-shadow:
    inset 2px 2px 4px var(--shadow-dark-inset),
    inset -2px -2px 4px var(--shadow-light-inset);
}

.neumo-textarea {
  background: var(--surface);
  border: none;
  border-radius: var(--radius-sm);
  padding: 16px;
  font-size: 15px;
  color: var(--text);
  box-shadow:
    inset 4px 4px 8px var(--shadow-dark-inset),
    inset -4px -4px 8px var(--shadow-light-inset);
  outline: none;
  resize: none;
  width: 100%;
  min-height: 300px;
  font-family: 'JetBrains Mono', 'Fira Code', 'Cascadia Code', monospace;
  line-height: 1.7;
  transition: box-shadow var(--transition);
}
.neumo-textarea:focus {
  box-shadow:
    inset 3px 3px 6px var(--shadow-dark-inset),
    inset -3px -3px 6px var(--shadow-light-inset),
    0 0 0 2px var(--primary-light);
}

.neumo-modal {
  background: var(--surface);
  border-radius: var(--radius);
  padding: 32px;
  max-width: 500px;
  width: 90%;
  box-shadow:
    12px 12px 24px var(--shadow-dark),
    -12px -12px 24px var(--shadow-light);
}

/* ===== AUTH PAGE ===== */

.auth-page {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  padding: 20px;
}

.auth-card {
  padding: 48px 40px;
  max-width: 420px;
  width: 100%;
  text-align: center;
}

.auth-header h1 {
  font-size: 36px;
  font-weight: 800;
  color: var(--primary);
  letter-spacing: 4px;
  margin-bottom: 4px;
}

.subtitle {
  color: var(--text-secondary);
  font-size: 14px;
  margin-bottom: 24px;
}

.auth-tabs {
  display: flex;
  gap: 0;
  margin-bottom: 24px;
  border-radius: var(--radius-sm);
  background: var(--surface);
  box-shadow:
    inset 3px 3px 6px var(--shadow-dark-inset),
    inset -3px -3px 6px var(--shadow-light-inset);
  padding: 4px;
}

.auth-tab {
  flex: 1;
  padding: 8px 16px;
  border: none;
  background: none;
  font-size: 14px;
  cursor: pointer;
  color: var(--text-secondary);
  border-radius: var(--radius-xs);
  transition: all var(--transition);
}
.auth-tab.active {
  background: var(--surface);
  color: var(--primary);
  font-weight: 600;
  box-shadow:
    2px 2px 4px var(--shadow-dark),
    -2px -2px 4px var(--shadow-light);
}

.auth-form {
  text-align: left;
}

.form-group {
  margin-bottom: 16px;
}
.form-group label {
  display: block;
  font-size: 13px;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 6px;
}

.auth-error, #devices-error {
  color: var(--danger);
  font-size: 13px;
  margin: 8px 0;
  min-height: 20px;
}

.auth-footer {
  margin-top: 24px;
  font-size: 12px;
  color: var(--text-muted);
}

#auth-submit {
  width: 100%;
  margin-top: 8px;
}

.device-info {
  background: var(--surface);
  border-radius: var(--radius-xs);
  padding: 10px 14px;
  box-shadow: inset 2px 2px 4px var(--shadow-dark-inset), inset -2px -2px 4px var(--shadow-light-inset);
  margin-bottom: 12px;
  font-size: 13px;
  color: var(--text-secondary);
}

.hint {
  font-size: 13px;
  color: var(--text-muted);
  margin: 4px 0 8px;
}

/* ===== APP LAYOUT ===== */

.app-page {
  display: flex;
  height: 100vh;
  overflow: hidden;
}

/* Sidebar */
.sidebar {
  width: var(--sidebar-width);
  height: 100vh;
  display: flex;
  flex-direction: column;
  border-radius: 0;
  flex-shrink: 0;
  padding: 16px;
  gap: 12px;
}

.sidebar-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  font-size: 22px;
  font-weight: 800;
  color: var(--primary);
  letter-spacing: 3px;
}

.sidebar-actions {
  display: flex;
  gap: 8px;
  align-items: center;
}

.mobile-only { display: none; }

.search-box {
  flex-shrink: 0;
}

.filter-row {
  display: flex;
  gap: 6px;
  flex-shrink: 0;
}
.filter-row .neumo-select { flex: 1; }
.filter-row .neumo-input-sm { width: 120px; }

.sidebar-tabs {
  display: flex;
  gap: 4px;
  flex-shrink: 0;
}
.sidebar-tab {
  flex: 1;
  padding: 8px 12px;
  border: none;
  background: none;
  font-size: 13px;
  cursor: pointer;
  color: var(--text-secondary);
  border-radius: var(--radius-xs);
  transition: all var(--transition);
}
.sidebar-tab.active {
  background: var(--surface);
  color: var(--primary);
  font-weight: 600;
  box-shadow:
    2px 2px 4px var(--shadow-dark),
    -2px -2px 4px var(--shadow-light);
}

.notes-list {
  flex: 1;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.notes-list::-webkit-scrollbar { width: 4px; }
.notes-list::-webkit-scrollbar-thumb {
  background: var(--shadow-dark);
  border-radius: 2px;
}

.note-item {
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--transition);
  border: 1px solid transparent;
}
.note-item:hover {
  box-shadow:
    inset 2px 2px 4px var(--shadow-dark-inset),
    inset -2px -2px 4px var(--shadow-light-inset);
}
.note-item.active {
  background: var(--surface);
  box-shadow:
    2px 2px 4px var(--shadow-dark),
    -2px -2px 4px var(--shadow-light);
  border-color: var(--primary-light);
}
.note-item-title {
  font-size: 14px;
  font-weight: 600;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.note-item-tags {
  display: flex;
  gap: 4px;
  flex-wrap: wrap;
  margin-top: 4px;
}
.note-tag {
  font-size: 10px;
  background: var(--surface);
  padding: 2px 8px;
  border-radius: 20px;
  box-shadow: inset 1px 1px 2px var(--shadow-dark-inset), inset -1px -1px 2px var(--shadow-light-inset);
  color: var(--primary);
}
.note-item-time {
  font-size: 11px;
  color: var(--text-muted);
  margin-top: 2px;
}

.sidebar-footer {
  flex-shrink: 0;
  padding-top: 8px;
  border-top: 1px solid var(--shadow-dark);
}
.user-info {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 13px;
  color: var(--text-secondary);
  font-weight: 600;
}
.user-actions { display: flex; gap: 4px; }

/* Main Content */
.main-content {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  background: var(--bg-alt);
}

.empty-state {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  gap: 12px;
}
.empty-icon { font-size: 64px; }
.empty-state h2 { color: var(--text-secondary); font-weight: 600; }

/* Editor */
.editor-area {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.editor-toolbar {
  padding: 12px 20px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  background: var(--surface);
  box-shadow: 0 2px 8px var(--shadow-dark);
}

.title-input {
  font-size: 22px !important;
  font-weight: 700 !important;
  padding: 8px 16px !important;
  border: none !important;
  box-shadow: inset 2px 2px 4px var(--shadow-dark-inset), inset -2px -2px 4px var(--shadow-light-inset) !important;
  background: var(--bg-alt) !important;
}
.title-input:focus {
  box-shadow: inset 2px 2px 4px var(--shadow-dark-inset), inset -2px -2px 4px var(--shadow-light-inset), 0 0 0 2px var(--primary-light) !important;
}

.toolbar-actions {
  display: flex;
  gap: 8px;
  align-items: center;
  flex-wrap: wrap;
}

.tag-input {
  flex: 1;
  min-width: 150px;
  max-width: 300px;
}

.save-status {
  font-size: 12px;
  color: var(--success);
  font-weight: 600;
  padding: 4px 10px;
  border-radius: var(--radius-xs);
  box-shadow: inset 1px 1px 3px var(--shadow-dark-inset), inset -1px -1px 3px var(--shadow-light-inset);
  white-space: nowrap;
}
.save-status.saving { color: var(--primary); }
.save-status.error { color: var(--danger); }

.editor-body {
  flex: 1;
  display: flex;
  overflow: hidden;
}

.editor-pane {
  flex: 1;
  padding: 20px;
  overflow: hidden;
}
.editor-pane textarea {
  height: 100% !important;
  min-height: auto !important;
}

.preview-pane {
  flex: 1;
  padding: 20px;
  overflow-y: auto;
  background: var(--surface);
  box-shadow: inset 4px 0 8px var(--shadow-dark-inset);
}
.preview-pane::-webkit-scrollbar { width: 6px; }
.preview-pane::-webkit-scrollbar-thumb { background: var(--shadow-dark); border-radius: 3px; }

/* Markdown content styling */
.markdown-body {
  color: var(--text);
  line-height: 1.8;
}
.markdown-body h1, .markdown-body h2, .markdown-body h3 {
  color: var(--primary);
  margin: 20px 0 10px;
}
.markdown-body h1 { font-size: 24px; border-bottom: 2px solid var(--shadow-dark); padding-bottom: 8px; }
.markdown-body h2 { font-size: 20px; }
.markdown-body h3 { font-size: 17px; }
.markdown-body p { margin: 10px 0; }
.markdown-body code {
  background: var(--bg-alt);
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 13px;
  box-shadow: inset 1px 1px 3px var(--shadow-dark-inset), inset -1px -1px 3px var(--shadow-light-inset);
}
.markdown-body pre {
  background: var(--bg-alt);
  padding: 16px;
  border-radius: var(--radius-sm);
  overflow-x: auto;
  box-shadow: inset 4px 4px 8px var(--shadow-dark-inset), inset -4px -4px 8px var(--shadow-light-inset);
}
.markdown-body pre code {
  background: none;
  box-shadow: none;
  padding: 0;
}
.markdown-body blockquote {
  border-left: 4px solid var(--primary-light);
  padding: 8px 16px;
  margin: 12px 0;
  color: var(--text-secondary);
  background: var(--bg-alt);
  border-radius: 0 var(--radius-xs) var(--radius-xs) 0;
  box-shadow: inset 2px 2px 4px var(--shadow-dark-inset), inset -2px -2px 4px var(--shadow-light-inset);
}
.markdown-body ul, .markdown-body ol { padding-left: 24px; margin: 8px 0; }
.markdown-body li { margin: 4px 0; }
.markdown-body a { color: var(--primary); text-decoration: none; }
.markdown-body a:hover { text-decoration: underline; }
.markdown-body table {
  border-collapse: collapse;
  width: 100%;
  margin: 12px 0;
}
.markdown-body th, .markdown-body td {
  padding: 8px 12px;
  text-align: left;
}
.markdown-body th {
  background: var(--bg-alt);
  box-shadow: inset 2px 2px 4px var(--shadow-dark-inset), inset -2px -2px 4px var(--shadow-light-inset);
}
.markdown-body img { max-width: 100%; border-radius: var(--radius-sm); }

/* Trash area */
.trash-area {
  flex: 1;
  padding: 32px;
  overflow-y: auto;
}
.trash-area h2 {
  color: var(--danger);
  margin-bottom: 8px;
}
.trash-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-top: 16px;
}
.trash-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  box-shadow:
    3px 3px 6px var(--shadow-dark),
    -3px -3px 6px var(--shadow-light);
}
.trash-item-info {
  flex: 1;
}
.trash-item-title {
  font-weight: 600;
  font-size: 14px;
}
.trash-item-time {
  font-size: 12px;
  color: var(--text-muted);
}
.trash-item-actions {
  display: flex;
  gap: 6px;
}

/* Modals */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.3);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
}
.modal {
  max-width: 500px;
  width: 90%;
}
.modal h3 { margin-bottom: 16px; color: var(--primary); }
.modal-actions {
  display: flex;
  gap: 8px;
  justify-content: flex-end;
  margin-top: 20px;
}

.share-url-box {
  display: flex;
  gap: 8px;
}
.share-url-box input { flex: 1; }

.devices-list {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin: 12px 0;
}
.device-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 10px 14px;
  border-radius: var(--radius-xs);
  box-shadow:
    inset 2px 2px 4px var(--shadow-dark-inset),
    inset -2px -2px 4px var(--shadow-light-inset);
}
.device-item.current { border: 1px solid var(--primary-light); }
.device-item-name { font-weight: 600; font-size: 13px; }
.device-item-browser { font-size: 12px; color: var(--text-muted); }
.device-item-time { font-size: 11px; color: var(--text-muted); }

/* Shared note page */
.shared-page {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  padding: 20px;
}
.shared-card {
  padding: 40px;
  max-width: 800px;
  width: 100%;
}
.shared-card h1 {
  color: var(--primary);
  margin-bottom: 20px;
}

/* Responsive */
@media (max-width: 768px) {
  .app-page { flex-direction: column; }
  .sidebar {
    position: fixed;
    left: 0;
    top: 0;
    z-index: 100;
    width: 85%;
    max-width: var(--sidebar-width);
    transform: translateX(-100%);
    transition: transform var(--transition);
  }
  .sidebar.open { transform: translateX(0); }
  .mobile-only { display: flex; }

  .editor-toolbar {
    padding: 10px 14px;
  }
  .toolbar-actions {
    flex-wrap: wrap;
  }
  .tag-input { max-width: 100%; min-width: 100px; }

  .filter-row { flex-wrap: wrap; }
  .filter-row .neumo-input-sm { flex: 1; min-width: 100px; }

  .neumo-modal { padding: 24px; }

/* 浮动切换按钮 - 移动端始终可见 */
.floating-toggle {
  position: fixed;
  top: 10px;
  left: 10px;
  z-index: 200;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--surface);
  box-shadow: 6px 6px 12px var(--shadow-dark), -6px -6px 12px var(--shadow-light);
  display: none;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  cursor: pointer;
  border: none;
  transition: transform 0.2s, box-shadow 0.2s;
}
.floating-toggle:active {
  box-shadow: inset 4px 4px 8px var(--shadow-dark), inset -4px -4px 8px var(--shadow-light);
}
@media (max-width: 768px) {
  .floating-toggle { display: flex; }
}