:root {
  --bg-primary: #000000;
  --bg-secondary: #0a0a0a;
  --bg-tertiary: #141414;
  --bg-hover: #1a1a1a;
  --bg-selected: #1e2a3a;
  --border: #1e1e1e;
  --border-light: #2a2a2a;
  --text-primary: #e8eaf0;
  --text-secondary: #9ba3b5;
  --text-muted: #6b7280;
  --accent: #38bdf8;
  --accent-hover: #5ccbfa;
  --accent-subtle: rgba(56, 189, 248, 0.12);
  --success: #2ed573;
  --danger: #ff4757;
  --warning: #ffa502;
  --blue: #38bdf8;
  --unread: #fff;
  --read: #9ba3b5;
  --sidebar-width: 230px;
  --list-panel-width: 380px;
}

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

body {
  background: var(--bg-primary);
  color: var(--text-primary);
  height: 100vh;
  overflow: hidden;
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  font-size: 14px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

#root { height: 100vh; }

/* ── Login Page ── */
.login-page {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  background: #000;
}

.login-card {
  background: #0a0a0a;
  border: 1px solid #1e1e1e;
  border-radius: 16px;
  padding: 40px 36px;
  width: 100%;
  max-width: 400px;
}

.login-card h1 {
  font-size: 1.5rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 4px;
}

.login-card .subtitle {
  color: var(--text-muted);
  font-size: 0.85rem;
  margin-bottom: 24px;
}

.login-card .error {
  background: rgba(255, 71, 87, 0.1);
  border: 1px solid rgba(255, 71, 87, 0.3);
  color: var(--danger);
  padding: 10px 14px;
  border-radius: 8px;
  font-size: 0.85rem;
  margin-bottom: 16px;
}

.form-group {
  margin-bottom: 16px;
}

.form-group label {
  display: block;
  font-size: 0.8rem;
  color: var(--text-secondary);
  margin-bottom: 6px;
  font-weight: 500;
}

.form-group input {
  width: 100%;
  padding: 10px 14px;
  background: #141414;
  border: 1px solid #2a2a2a;
  border-radius: 8px;
  color: var(--text-primary);
  font-size: 0.9rem;
  outline: none;
  transition: border-color 0.15s;
}

.form-group input:focus { border-color: var(--accent); }
.form-group input::placeholder { color: var(--text-muted); }

/* ── Buttons ── */
.btn-primary {
  background: var(--accent);
  color: #000;
  border: none;
  border-radius: 8px;
  padding: 10px 20px;
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.15s;
}

.btn-primary:hover { background: var(--accent-hover); }
.btn-primary:disabled { opacity: 0.5; cursor: not-allowed; }

.btn-secondary {
  background: var(--bg-tertiary);
  color: var(--text-primary);
  border: 1px solid var(--border-light);
  border-radius: 6px;
  padding: 6px 14px;
  font-size: 0.8rem;
  cursor: pointer;
  transition: background 0.15s;
}

.btn-secondary:hover { background: var(--bg-hover); }
.btn-secondary:disabled { opacity: 0.4; cursor: not-allowed; }

.btn-icon {
  background: none;
  border: none;
  color: var(--text-secondary);
  cursor: pointer;
  font-size: 1rem;
  padding: 4px 6px;
  border-radius: 4px;
  transition: background 0.15s;
}

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

.btn-danger {
  background: rgba(255, 71, 87, 0.1);
  color: var(--danger);
  border: 1px solid rgba(255, 71, 87, 0.3);
  border-radius: 6px;
  padding: 6px 14px;
  font-size: 0.8rem;
  cursor: pointer;
}

.btn-danger:hover { background: rgba(255, 71, 87, 0.2); }

/* ── App Layout ── */
.app-layout {
  display: grid;
  grid-template-columns: var(--sidebar-width) var(--list-panel-width) 1fr;
  height: 100vh;
  overflow: hidden;
}

/* ── Sidebar ── */
.folder-sidebar {
  background: #000;
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  height: 100vh;
  overflow: hidden;
}

.folder-header {
  padding: 16px 16px 12px;
  border-bottom: 1px solid var(--border);
}

.compose-btn {
  margin: 12px 14px;
  padding: 10px;
  background: var(--accent);
  color: #000;
  border: none;
  border-radius: 8px;
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.15s;
}

.compose-btn:hover { background: var(--accent-hover); }

.folder-list {
  flex: 1;
  overflow-y: auto;
  padding: 4px 8px;
}

.folder-section {
  font-size: 0.65rem;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 16px 12px 6px;
}

.folder-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 12px;
  border-radius: 6px;
  cursor: pointer;
  transition: background 0.12s;
  font-size: 0.85rem;
  color: var(--text-secondary);
}

.folder-item:hover { background: var(--bg-hover); color: var(--text-primary); }
.folder-item.active { background: var(--accent-subtle); color: var(--accent); font-weight: 500; }
.folder-item .icon { font-size: 1rem; flex-shrink: 0; }
.folder-item .name { flex: 1; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

.folder-item .badge {
  background: var(--accent);
  color: #000;
  font-size: 0.7rem;
  font-weight: 700;
  padding: 1px 7px;
  border-radius: 10px;
  min-width: 20px;
  text-align: center;
}

/* ── Folder Manage Link ── */
.folder-manage-link {
  padding: 8px 12px;
  font-size: 0.78rem;
  color: var(--text-muted);
  cursor: pointer;
  border-radius: 6px;
  transition: all 0.12s;
}

.folder-manage-link:hover {
  color: var(--accent);
  background: var(--accent-subtle);
}

.folder-footer {
  border-top: 1px solid var(--border);
  padding: 12px 14px;
}

.folder-user {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 10px;
}

.folder-user .avatar {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--accent-subtle);
  color: var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 0.8rem;
  flex-shrink: 0;
}

.folder-user .email {
  font-size: 0.75rem;
  color: var(--text-secondary);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

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

.footer-actions button, .footer-actions a.admin-link {
  flex: 1;
  padding: 6px 8px;
  background: var(--bg-tertiary);
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text-secondary);
  font-size: 0.75rem;
  cursor: pointer;
  text-align: center;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.15s;
}

.footer-actions button:hover, .footer-actions a.admin-link:hover {
  background: var(--bg-hover);
  color: var(--text-primary);
}

/* ── Message List Panel ── */
.message-list-panel {
  background: var(--bg-secondary);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  height: 100vh;
  overflow: hidden;
}

.list-header {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 14px 16px;
  border-bottom: 1px solid var(--border);
}

.list-header h2 {
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--text-primary);
}

.list-header .count {
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-left: auto;
}

/* ── New Mail Badge ── */
.new-mail-badge {
  background: var(--accent);
  color: #000;
  font-size: 0.7rem;
  font-weight: 700;
  padding: 2px 10px;
  border-radius: 10px;
  cursor: pointer;
  animation: pulse 1.5s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.6; }
}

/* ── Empty Folder Bar ── */
.empty-folder-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 16px;
  background: rgba(255, 71, 87, 0.06);
  border-bottom: 1px solid var(--border);
}

.empty-folder-bar span { font-size: 0.8rem; color: var(--text-secondary); }

.empty-folder-bar button {
  background: rgba(255, 71, 87, 0.15);
  color: var(--danger);
  border: 1px solid rgba(255, 71, 87, 0.3);
  border-radius: 6px;
  padding: 5px 12px;
  font-size: 0.75rem;
  font-weight: 500;
  cursor: pointer;
  transition: background 0.15s;
}

.empty-folder-bar button:hover { background: rgba(255, 71, 87, 0.25); }

/* ── Select Bar ── */
.select-bar {
  display: flex;
  align-items: center;
  padding: 6px 16px;
  border-bottom: 1px solid var(--border);
  background: var(--bg-secondary);
}

.select-bar label {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.78rem;
  color: var(--text-muted);
  cursor: pointer;
}

.select-bar input[type="checkbox"] {
  accent-color: var(--accent);
  cursor: pointer;
}

/* ── Bulk Action Bar ── */
.bulk-bar {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 8px 12px;
  background: var(--accent-subtle);
  border-bottom: 1px solid var(--border);
  flex-wrap: wrap;
}

.bulk-bar .bulk-count {
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--accent);
  margin-right: 6px;
}

.bulk-bar button {
  background: var(--bg-tertiary);
  border: 1px solid var(--border);
  border-radius: 5px;
  color: var(--text-secondary);
  font-size: 0.72rem;
  padding: 4px 8px;
  cursor: pointer;
  white-space: nowrap;
  transition: background 0.12s;
}

.bulk-bar button:hover { background: var(--bg-hover); color: var(--text-primary); }
.bulk-bar button.danger { border-color: rgba(255, 71, 87, 0.3); color: var(--danger); }
.bulk-bar button.danger:hover { background: rgba(255, 71, 87, 0.15); }

/* ── Search Bar ── */
.search-bar {
  padding: 8px 14px;
  border-bottom: 1px solid var(--border);
}

.search-bar input {
  width: 100%;
  padding: 8px 12px;
  background: var(--bg-tertiary);
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text-primary);
  font-size: 0.82rem;
  outline: none;
  transition: border-color 0.15s;
}

.search-bar input:focus { border-color: var(--accent); }
.search-bar input::placeholder { color: var(--text-muted); }

/* ── Message List ── */
.message-list {
  flex: 1;
  overflow-y: auto;
}

.loading-spinner {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 100%;
  color: var(--text-muted);
  font-size: 0.85rem;
}

.message-item {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 10px 16px;
  border-bottom: 1px solid var(--border);
  cursor: pointer;
  transition: background 0.1s;
}

.message-item:hover { background: var(--bg-hover); }
.message-item.active { background: var(--bg-selected); }
.message-item.unread { background: rgba(56, 189, 248, 0.03); }

.msg-checkbox {
  margin-top: 4px;
  accent-color: var(--accent);
  cursor: pointer;
  flex-shrink: 0;
}

.msg-content {
  flex: 1;
  min-width: 0;
}

.msg-from {
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--read);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  display: flex;
  align-items: center;
}

.message-item.unread .msg-from { color: var(--unread); font-weight: 600; }

.msg-subject {
  font-size: 0.8rem;
  color: var(--text-secondary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  margin: 2px 0;
  display: flex;
  align-items: center;
}

.message-item.unread .msg-subject { color: var(--text-primary); }

.msg-meta {
  display: flex;
  justify-content: space-between;
  font-size: 0.7rem;
  color: var(--text-muted);
}

/* ── Pagination ── */
.list-pagination {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  padding: 10px;
  border-top: 1px solid var(--border);
  font-size: 0.78rem;
  color: var(--text-muted);
}

/* ── Reading Pane ── */
.reading-pane {
  background: var(--bg-primary);
  display: flex;
  flex-direction: column;
  height: 100vh;
  overflow: hidden;
}

.reading-empty {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
}

.reading-header {
  padding: 20px 24px 14px;
  border-bottom: 1px solid var(--border);
}

.reading-header h2 {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 12px;
}

.reading-meta {
  display: flex;
  align-items: flex-start;
  gap: 12px;
}

.sender-avatar {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--accent-subtle);
  color: var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 0.9rem;
  flex-shrink: 0;
}

.sender-info { flex: 1; min-width: 0; }
.sender-name { font-weight: 600; font-size: 0.85rem; }
.sender-email { font-size: 0.75rem; color: var(--text-muted); }
.recipients { font-size: 0.75rem; color: var(--text-muted); margin-top: 2px; }
.reading-meta .date { font-size: 0.75rem; color: var(--text-muted); white-space: nowrap; flex-shrink: 0; }

/* ── Reading Actions ── */
.reading-actions {
  display: flex;
  gap: 4px;
  padding: 8px 24px;
  border-bottom: 1px solid var(--border);
  flex-wrap: wrap;
}

.reading-actions button {
  background: var(--bg-tertiary);
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text-secondary);
  font-size: 0.78rem;
  padding: 5px 10px;
  cursor: pointer;
  transition: background 0.12s;
}

.reading-actions button:hover { background: var(--bg-hover); color: var(--text-primary); }

/* ── Reading Body ── */
.reading-body {
  flex: 1;
  overflow-y: auto;
  padding: 20px 24px;
}

.reading-body .text-body {
  white-space: pre-wrap;
  font-size: 0.88rem;
  line-height: 1.7;
  color: var(--text-primary);
}

.reading-body iframe {
  background: #fff;
  border-radius: 4px;
}

/* ── Attachments ── */
.attachments-bar {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  padding: 12px 24px;
  border-top: 1px solid var(--border);
  background: var(--bg-secondary);
  align-items: center;
}

.attachments-title {
  width: 100%;
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 4px;
}

.attachment-chip {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 6px 12px;
  background: var(--bg-tertiary);
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 0.78rem;
  color: var(--text-secondary);
  text-decoration: none;
  transition: background 0.12s;
}

.attachment-chip:hover { background: var(--bg-hover); color: var(--text-primary); }
.attachment-chip .att-icon { font-size: 0.9rem; }
.attachment-chip .att-size { color: var(--text-muted); font-size: 0.7rem; }

.attachment-chip .att-download {
  font-size: 0.85rem;
  color: var(--accent);
  margin-left: 2px;
}

/* ── Compose Modal ── */
.compose-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.7);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 100;
}

.compose-modal {
  background: var(--bg-secondary);
  border: 1px solid var(--border-light);
  border-radius: 12px;
  width: 95%;
  max-width: 680px;
  max-height: 90vh;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.compose-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 20px;
  border-bottom: 1px solid var(--border);
}

.compose-header h3 { font-size: 1rem; font-weight: 600; }

.compose-fields {
  padding: 12px 20px 0;
}

.compose-field {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 6px 0;
  border-bottom: 1px solid var(--border);
  position: relative;
}

.compose-field label {
  font-size: 0.8rem;
  color: var(--text-muted);
  width: 55px;
  flex-shrink: 0;
}

.compose-field input {
  flex: 1;
  background: transparent;
  border: none;
  color: var(--text-primary);
  font-size: 0.85rem;
  outline: none;
}

.compose-field input::placeholder { color: var(--text-muted); }

/* ── From Selector ── */
.compose-select {
  flex: 1;
  background: var(--bg-tertiary);
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text-primary);
  font-size: 0.82rem;
  padding: 6px 10px;
  outline: none;
  appearance: auto;
  cursor: pointer;
}

.compose-select:focus { border-color: var(--accent); }

.compose-select option {
  background: var(--bg-secondary);
  color: var(--text-primary);
}

/* ── Rich Text Toolbar ── */
.compose-toolbar {
  display: flex;
  align-items: center;
  gap: 2px;
  padding: 6px 20px;
  border-bottom: 1px solid var(--border);
  background: var(--bg-tertiary);
}

.compose-toolbar button {
  background: none;
  border: 1px solid transparent;
  border-radius: 4px;
  color: var(--text-secondary);
  font-size: 0.78rem;
  padding: 4px 8px;
  cursor: pointer;
  transition: all 0.12s;
  font-weight: 500;
}

.compose-toolbar button:hover {
  background: var(--bg-hover);
  border-color: var(--border);
  color: var(--text-primary);
}

.toolbar-sep {
  display: inline-block;
  width: 1px;
  height: 18px;
  background: var(--border-light);
  margin: 0 4px;
}

/* ── Compose Editor (contenteditable) ── */
.compose-body {
  flex: 1;
  padding: 0 20px;
  min-height: 200px;
  overflow-y: auto;
}

.compose-editor {
  width: 100%;
  min-height: 200px;
  padding: 12px 0;
  color: var(--text-primary);
  font-size: 0.85rem;
  line-height: 1.6;
  font-family: inherit;
  outline: none;
  border: none;
  background: transparent;
  -webkit-user-modify: read-write-plaintext-only;
  -webkit-user-modify: read-write;
}

.compose-editor:empty::before {
  content: 'Write your message...';
  color: var(--text-muted);
}

.compose-editor.drag-over {
  background: var(--accent-subtle);
  border-radius: 8px;
}

.compose-editor a { color: var(--accent); }
.compose-editor blockquote {
  border-left: 3px solid var(--border-light);
  padding-left: 12px;
  color: var(--text-muted);
  margin: 8px 0;
}

/* ── Contact Autocomplete Dropdown ── */
.contact-dropdown {
  position: absolute;
  top: 100%;
  left: 60px;
  right: 0;
  background: var(--bg-secondary);
  border: 1px solid var(--border-light);
  border-radius: 8px;
  max-height: 180px;
  overflow-y: auto;
  z-index: 200;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.6);
}

.contact-option {
  padding: 8px 14px;
  font-size: 0.82rem;
  color: var(--text-secondary);
  cursor: pointer;
  transition: background 0.1s;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.contact-option:hover {
  background: var(--accent-subtle);
  color: var(--text-primary);
}

/* ── Compose Attachments ── */
.compose-attachments {
  padding: 0 20px;
  border-top: 1px solid var(--border);
}

.attachment-list {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  padding: 8px 0 4px;
}

.attachment-item {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  background: var(--bg-tertiary);
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 0.75rem;
  color: var(--text-secondary);
}

.attachment-item .att-remove {
  background: none;
  border: none;
  color: var(--danger);
  cursor: pointer;
  font-size: 0.85rem;
  padding: 0 2px;
  line-height: 1;
}

.attachment-actions {
  padding: 4px 0 8px;
}

.btn-attach {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 5px 12px;
  background: var(--bg-tertiary);
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text-secondary);
  font-size: 0.78rem;
  cursor: pointer;
  transition: all 0.12s;
}

.btn-attach:hover {
  background: var(--bg-hover);
  color: var(--text-primary);
}

.compose-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 20px;
  border-top: 1px solid var(--border);
}

.compose-size {
  font-size: 0.75rem;
  color: var(--text-muted);
}

/* ── Move Dialog ── */
.move-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.7);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 100;
}

.move-dialog {
  background: var(--bg-secondary);
  border: 1px solid var(--border-light);
  border-radius: 12px;
  padding: 20px;
  width: 320px;
  max-height: 80vh;
  overflow-y: auto;
}

.move-dialog h3 {
  font-size: 0.95rem;
  font-weight: 600;
  margin-bottom: 12px;
}

.folder-option {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 12px;
  border-radius: 6px;
  cursor: pointer;
  font-size: 0.85rem;
  color: var(--text-secondary);
  transition: background 0.12s;
}

.folder-option:hover { background: var(--bg-hover); color: var(--text-primary); }
.folder-option .icon { font-size: 1rem; }

.cancel-btn {
  width: 100%;
  margin-top: 12px;
  padding: 8px;
  background: var(--bg-tertiary);
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text-secondary);
  font-size: 0.82rem;
  cursor: pointer;
}

.cancel-btn:hover { background: var(--bg-hover); }

/* ── Folder Management Dialog ── */
.folder-manage {
  width: 380px;
}

.new-folder-row {
  display: flex;
  gap: 8px;
  margin-bottom: 16px;
}

.new-folder-row input {
  flex: 1;
  padding: 8px 12px;
  background: var(--bg-tertiary);
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text-primary);
  font-size: 0.82rem;
  outline: none;
}

.new-folder-row input:focus { border-color: var(--accent); }
.new-folder-row input::placeholder { color: var(--text-muted); }

.new-folder-row .btn-primary {
  padding: 8px 16px;
  font-size: 0.82rem;
}

.folder-manage-list {
  max-height: 300px;
  overflow-y: auto;
  margin-bottom: 8px;
}

.folder-manage-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 12px;
  border-radius: 6px;
  font-size: 0.85rem;
  color: var(--text-secondary);
  transition: background 0.1s;
}

.folder-manage-item:hover { background: var(--bg-hover); }

.folder-manage-actions {
  display: flex;
  gap: 4px;
}

.folder-manage-actions button {
  background: none;
  border: 1px solid transparent;
  border-radius: 4px;
  cursor: pointer;
  font-size: 0.85rem;
  padding: 2px 6px;
  transition: all 0.12s;
}

.folder-manage-actions button:hover {
  background: var(--bg-tertiary);
  border-color: var(--border);
}

/* ── Confirm Dialog ── */
.confirm-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.7);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 200;
}

.confirm-dialog {
  background: var(--bg-secondary);
  border: 1px solid var(--border-light);
  border-radius: 12px;
  padding: 24px;
  width: 360px;
}

.confirm-dialog h3 { font-size: 1rem; font-weight: 600; margin-bottom: 8px; }
.confirm-dialog p { font-size: 0.85rem; color: var(--text-secondary); margin-bottom: 20px; }

.confirm-dialog .actions {
  display: flex;
  gap: 10px;
  justify-content: flex-end;
}

/* ── Toast ── */
.toast {
  position: fixed;
  bottom: 24px;
  right: 24px;
  padding: 12px 20px;
  border-radius: 8px;
  font-size: 0.85rem;
  z-index: 500;
  animation: slideUp 0.25s ease-out;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
}

.toast.success { background: var(--success); color: #000; }
.toast.error { background: var(--danger); color: #fff; }

@keyframes slideUp {
  from { transform: translateY(20px); opacity: 0; }
  to { transform: translateY(0); opacity: 1; }
}

/* ── Scrollbar ── */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border-light); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--text-muted); }

/* ── Mobile back button (hidden on desktop) ── */
.reading-back-mobile { display: none; }

/* ── Panel containers ── */
#panel-sidebar > div { display: contents; }
#panel-list > div { display: contents; }
#panel-reading > div { display: contents; }

#overlays { position: fixed; z-index: 90; }

/* ── iPad / Tablet (up to 1024px) ── */
@media (max-width: 1024px) {
  .app-layout {
    grid-template-columns: 200px 1fr;
  }
  .app-layout .reading-pane {
    display: none;
  }
  .app-layout.show-reading .reading-pane {
    display: flex;
    position: fixed;
    inset: 0;
    z-index: 50;
    background: var(--bg-primary);
  }
  .app-layout.show-reading .reading-back-mobile {
    display: block;
    padding: 10px 16px;
    border-bottom: 1px solid var(--border);
  }
  :root {
    --sidebar-width: 200px;
    --list-panel-width: 1fr;
  }
}

/* ── Mobile (up to 768px) ── */
@media (max-width: 768px) {
  .app-layout {
    grid-template-columns: 1fr;
  }
  .app-layout .folder-sidebar {
    display: none;
  }
  .app-layout .message-list-panel {
    grid-column: 1;
  }
  .app-layout .reading-pane {
    display: none;
  }
  .app-layout.show-reading .message-list-panel {
    display: none;
  }
  .app-layout.show-reading .reading-pane {
    display: flex;
    grid-column: 1;
  }
  .app-layout.show-reading .reading-back-mobile {
    display: block;
    padding: 10px 16px;
    border-bottom: 1px solid var(--border);
  }

  .login-card {
    margin: 16px;
    padding: 28px 20px;
  }

  .compose-modal {
    width: 100%;
    max-width: 100%;
    max-height: 100vh;
    border-radius: 0;
  }

  .compose-toolbar {
    overflow-x: auto;
    padding: 6px 12px;
  }

  .reading-actions {
    padding: 8px 16px;
  }

  .reading-actions button {
    font-size: 0.72rem;
    padding: 4px 8px;
  }
}

/* ── Safari touch scroll fix ── */
.message-list,
.reading-body,
.folder-list,
.compose-body {
  -webkit-overflow-scrolling: touch;
}

/* ── Use safe area for notch devices ── */
@supports (padding-top: env(safe-area-inset-top)) {
  .app-layout {
    padding-top: env(safe-area-inset-top);
    padding-bottom: env(safe-area-inset-bottom);
  }
}