/* Mailbox, message, thread, tag and composer styles. */

/* ============================================
   10. TOOLBAR
   ============================================ */
.toolbar {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 6px 16px;
  border-bottom: 1px solid var(--border);
  background: var(--bg-subtle);
  min-height: 44px;
  flex-shrink: 0;
}

.tool-btn {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 5px 12px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg);
  color: var(--text-secondary);
  font-size: 0.82rem;
  cursor: pointer;
  transition: all 0.12s;
  white-space: nowrap;
}
.tool-btn:hover {
  background: var(--bongo-blue-light);
  border-color: var(--bongo-blue);
  color: var(--bongo-blue-dark);
}
.tool-btn.primary { background: var(--bongo-blue); color: #fff; border-color: var(--bongo-blue); }
.tool-btn.primary:hover { background: var(--bongo-blue-dark); }
.tool-btn.danger:hover { background: #fdf2f2; border-color: #e74c3c; color: #e74c3c; }
[data-theme="dark"] .tool-btn.danger:hover { background: #3a1a1a; }

.tool-check {
  appearance: none;
  -webkit-appearance: none;
  width: 16px; height: 16px;
  border: 2px solid var(--border-strong);
  border-radius: 3px;
  cursor: pointer;
  transition: all 0.12s;
  flex-shrink: 0;
}
.tool-check:checked { background: var(--bongo-blue); border-color: var(--bongo-blue); }

.tool-separator { width: 1px; height: 24px; background: var(--border); margin: 0 4px; }
.tool-spacer { flex: 1; }

/* Layout toggles */
.layout-toggle {
  display: flex;
  background: var(--bg-muted);
  border-radius: var(--radius);
  padding: 2px;
  gap: 2px;
}
.layout-opt {
  padding: 4px 10px; border: none; background: transparent;
  color: var(--text-muted); font-size: 0.85rem; cursor: pointer;
  border-radius: 4px; transition: all 0.12s;
}
.layout-opt.active { background: var(--bg); color: var(--bongo-blue); box-shadow: var(--shadow-sm); }

.page-info { font-size: 0.78rem; color: var(--text-muted); padding: 0 8px; white-space: nowrap; }

.move-select {
  padding: 5px 8px; border: 1px solid var(--border);
  border-radius: var(--radius); background: var(--bg);
  color: var(--text-secondary); font-size: 0.82rem;
  cursor: pointer;
}


/* ============================================
   11. MESSAGE LIST
   ============================================ */
.msg-list { flex: 1; overflow-y: auto; }

.msg-row {
  display: flex;
  align-items: center;
  padding: 0 16px;
  height: 44px;
  border-bottom: 1px solid var(--border);
  cursor: pointer;
  transition: background 0.1s;
}
.msg-row:hover { background: var(--bg-hover); }

.msg-row.unread { background: var(--bg-subtle); }
.msg-row.unread .msg-from,
.msg-row.unread .msg-subject { color: var(--text); font-weight: 600; }
.msg-row.unread .msg-date { font-weight: 600; color: var(--bongo-blue-dark); }
.msg-row-swipe-animating { transition: transform 200ms ease; }
.msg-row-swipe-dismiss-left { transform: translateX(-100%); }
.msg-row-swipe-dismiss-right { transform: translateX(100%); }

.msg-check {
  appearance: none; -webkit-appearance: none;
  width: 15px; height: 15px;
  border: 2px solid var(--border-strong);
  border-radius: 3px; cursor: pointer;
  flex-shrink: 0; margin-right: 10px;
  transition: all 0.12s;
}
.msg-check:checked { background: var(--bongo-blue); border-color: var(--bongo-blue); }

.msg-star {
  width: 28px; text-align: center; cursor: pointer;
  font-size: 1rem; color: var(--text-muted);
  flex-shrink: 0; transition: color 0.12s; user-select: none;
  background: none; border: none; padding: 0;
  font-family: inherit; line-height: 1;
}
.msg-star:hover { color: #f0ad4e; }
.msg-star.flagged { color: #f0ad4e; }

.msg-from {
  width: 180px; flex-shrink: 0;
  font-size: 0.88rem; color: var(--text-secondary);
  overflow: hidden; text-overflow: ellipsis;
  white-space: nowrap; padding-right: 12px;
}

.msg-subject {
  flex: 1; font-size: 0.88rem; color: var(--text);
  overflow: hidden; text-overflow: ellipsis;
  white-space: nowrap; min-width: 0;
}

.msg-snippet { color: var(--text-muted); font-weight: 400; }

.msg-thread-count {
  display: inline-flex; align-items: center; justify-content: center;
  background: var(--bg-muted); color: var(--text-secondary);
  font-size: 0.7rem; font-weight: 600;
  border-radius: 10px; padding: 1px 6px;
  margin-left: 6px; flex-shrink: 0;
}

.msg-attach { color: var(--text-muted); font-size: 0.85rem; margin-left: 6px; flex-shrink: 0; }

.msg-date {
  width: 80px; text-align: right;
  font-size: 0.78rem; color: var(--text-muted);
  flex-shrink: 0; padding-left: 12px;
}


/* ============================================
   12. PAGINATION
   ============================================ */
.pagination {
  display: flex; align-items: center; justify-content: center;
  flex-wrap: wrap;
  gap: 4px; padding: 12px 16px;
  border-top: 1px solid var(--border);
  background: var(--bg-subtle);
}
.page-btn {
  display: flex; align-items: center; justify-content: center;
  min-width: 34px; height: 34px;
  padding: 0 8px; border: 1px solid var(--border);
  border-radius: var(--radius); background: var(--bg);
  color: var(--text-secondary); font-size: 0.85rem;
  cursor: pointer; transition: all 0.12s;
}
.page-btn:hover { background: var(--bongo-blue-light); border-color: var(--bongo-blue); color: var(--bongo-blue-dark); }
.page-btn.active { background: var(--bongo-blue); border-color: var(--bongo-blue); color: white; }
.page-btn:disabled { opacity: 0.4; cursor: default; }
.page-ellipsis { display: flex; align-items: center; padding: 0 4px; color: var(--text-muted); font-size: 0.85rem; }


/* ============================================
   13. THREAD / MESSAGE VIEW
   ============================================ */

/* Thread header (subject) */
.thread-header {
  padding: 16px 24px 12px;
  border-bottom: 1px solid var(--border);
}
.thread-subject {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--text);
  line-height: 1.3;
}
.thread-labels { display: flex; gap: 6px; margin-top: 6px; }
.thread-label {
  display: inline-flex; align-items: center;
  font-size: 0.72rem; font-weight: 600;
  padding: 2px 8px; border-radius: 10px;
  background: var(--bg-muted); color: var(--text-secondary);
}
.thread-label.inbox { background: var(--bongo-blue-light); color: var(--bongo-blue-dark); }

/* Message list (scrollable) */
.thread-messages {
  flex: 1; overflow-y: auto;
  padding: 16px 24px 24px;
}

/* Individual message bubble */
.message {
  position: relative; display: flex;
  gap: 12px; margin-bottom: 16px;
}

/* Avatar */
.msg-avatar {
  width: 40px; height: 40px;
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 0.78rem; font-weight: 700; color: #fff;
  flex-shrink: 0; margin-top: 4px;
}

/* Message card */
.msg-card {
  flex: 1; min-width: 0;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden; transition: box-shadow 0.15s;
}
.msg-card:hover { box-shadow: var(--shadow-sm); }

.loaded-remote-image { max-width: 100%; }

.message.unread .msg-card {
  border-color: var(--bongo-blue);
  box-shadow: 0 0 0 1px var(--bongo-blue);
}
.message.sent .msg-card { background: var(--bg-subtle); }

/* Message header row */
.msg-head {
  display: flex; align-items: center; gap: 8px;
  padding: 10px 14px;
  background: var(--bg-subtle);
  border-bottom: 1px solid var(--border);
  cursor: pointer;
}

.msg-sender { font-weight: 600; font-size: 0.88rem; color: var(--text); }
.msg-recipients { font-size: 0.78rem; color: var(--text-muted); }
.msg-head-spacer { flex: 1; }

.msg-head-actions { display: flex; gap: 2px; }
.msg-action-btn {
  padding: 3px 8px; border: none; background: transparent;
  color: var(--text-muted); font-size: 0.78rem;
  cursor: pointer; border-radius: var(--radius);
  transition: background 0.12s, color 0.12s;
}
.msg-action-btn:hover { background: var(--bg-muted); color: var(--bongo-blue-dark); }

/* Collapse indicator */
.msg-collapse-icon {
  font-size: 0.7rem; color: var(--text-muted);
  transition: transform 0.2s; flex-shrink: 0;
}
.message.collapsed .msg-collapse-icon { transform: rotate(-90deg); }

/* Message body */
.msg-body {
  padding: 14px; font-size: 0.9rem;
  line-height: 1.65; color: var(--text);
}
.msg-body p { margin-bottom: 0.8em; }
.msg-body p:last-child { margin-bottom: 0; }
.msg-body ul, .msg-body ol { margin: 0.5em 0 0.8em 1.5em; }
.msg-body li { margin-bottom: 0.3em; }
.msg-body blockquote {
  margin: 0.5em 0; padding: 8px 14px;
  border-left: 3px solid var(--border-strong);
  background: var(--bg-subtle); color: var(--text-secondary);
  font-size: 0.88rem; border-radius: 0 var(--radius) var(--radius) 0;
}

/* Collapsed state */
.message.collapsed .msg-body { display: none; }
.message.collapsed .msg-attachments { display: none; }

/* Snippet shown when collapsed (in thread view) */
.message .msg-snippet {
  display: none;
  font-size: 0.82rem; color: var(--text-muted);
  padding: 0; overflow: hidden;
  text-overflow: ellipsis; white-space: nowrap;
  max-width: 500px;
}
.message.collapsed .msg-snippet { display: block; }
.message.collapsed .msg-head { border-bottom: none; }

/* Attachments: a card of typed tiles (extension badge, name, size) */
.msg-attachments {
  display: block;
  margin: 0 1.75rem 1.5rem;
  padding: 1rem 1.25rem;
  background: var(--surface-1);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  max-width: 760px;
}
.att-label {
  display: flex; align-items: center; flex-wrap: wrap; gap: .5rem;
  margin-bottom: .65rem;
  font-size: .7rem; font-weight: 700; text-transform: uppercase;
  letter-spacing: .08em; color: var(--text-muted);
}
.att-list { display: flex; flex-wrap: wrap; gap: .5rem; }
.attachment-preview { display: flex; flex-direction: column; gap: .5rem; max-width: 100%; min-width: 0; width: 100%; }

.attachment-chip {
  display: inline-flex; align-items: center; gap: .55rem;
  max-width: 100%;
  padding: .45rem .65rem .45rem .55rem;
  background: var(--surface-2); border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm); font-size: .82rem;
  color: var(--text-primary); text-decoration: none;
  transition: background var(--duration) var(--ease-out), border-color var(--duration) var(--ease-out);
}
.attachment-chip:hover {
  background: var(--surface-1);
  border-color: var(--border-default);
  color: var(--text-primary);
}
.att-ico {
  display: inline-flex; align-items: center; justify-content: center;
  flex-shrink: 0; width: 28px; height: 28px; border-radius: 4px;
  background: var(--accent-subtle); color: var(--accent-accessible);
  font-family: var(--font-mono); font-size: .68rem; font-weight: 800;
  letter-spacing: .05em; text-transform: uppercase;
}
.att-name { min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.att-size { flex-shrink: 0; margin-left: .25rem; color: var(--text-muted); font-size: .75rem; }
/* Image attachments hidden until the user opts in (tracker/malware safety). */
.attachment-chip-hidden { border-style: dashed; background: var(--surface-1); color: var(--text-muted); }
.attachment-reveal {
  padding: 2px 10px;
  background: transparent; border: 1px solid var(--accent);
  border-radius: var(--radius-sm); font-size: .75rem; font-weight: 600;
  letter-spacing: normal; text-transform: none;
  color: var(--accent-accessible); cursor: pointer;
}
.attachment-reveal:hover { background: var(--accent-subtle); }

/* Blocked images banner */
.blocked-banner {
  display: flex; align-items: center; gap: 8px;
  padding: 8px 14px;
  background: #fef3cd; color: #856404;
  font-size: 0.82rem; border-bottom: 1px solid #ffc107;
}
[data-theme="dark"] .blocked-banner {
  background: #3a3520; color: #ffc107; border-color: #665d1e;
}
.blocked-banner button {
  padding: 3px 10px; border: 1px solid currentColor;
  background: transparent; color: inherit;
  border-radius: var(--radius); cursor: pointer; font-size: 0.78rem;
}

/* View Original (raw message source) page */
.msg-source-page { max-width: 900px; margin: 0 auto; }
.msg-source {
  white-space: pre-wrap;
  overflow-wrap: anywhere;
  word-break: break-all;
  font-family: monospace;
  font-size: 0.82rem;
  line-height: 1.5;
  background: var(--bg-subtle);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px;
  max-height: 70vh;
  overflow: auto;
}

/* Quick reply area */
.quick-reply {
  margin: 0 0 24px 52px;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
}
.quick-reply-textarea {
  width: 100%; min-height: 100px;
  border: none; padding: 12px 14px;
  font-family: inherit; font-size: 0.9rem;
  line-height: 1.5; resize: vertical;
  background: var(--bg); color: var(--text); outline: none;
}
.quick-reply-textarea::placeholder { color: var(--text-muted); }
.quick-reply-textarea:focus-visible { outline: none; }
.quick-reply-footer {
  display: flex; align-items: center; gap: 8px;
  padding: 8px 14px;
  background: var(--bg-subtle);
  border-top: 1px solid var(--border);
}
.reply-spacer { flex: 1; }
.reply-attach-btn {
  border: none; background: transparent; color: var(--text-muted);
  font-size: 1.1rem; cursor: pointer; padding: 4px;
  border-radius: var(--radius); transition: color 0.12s;
}
.reply-attach-btn:hover { color: var(--bongo-blue); }

/* Thread utility classes (from existing bongo.css) */
.thread-badge {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 700;
  background: var(--bg-muted);
  color: var(--text-secondary);
  border-radius: 10px;
  padding: 1px 6px;
  margin-left: 4px;
}
.thread-children { background: var(--bg-subtle); }
.thread-child td.from-col { padding-left: 24px; }

/* ==== READING PANE (US-006) ==== */
/* Header: large subject over the tag chip row. */
.thread-header { padding: 1.25rem 1.75rem 1rem; background: var(--surface-1); }
.thread-subject { font-size: 1.35rem; letter-spacing: -.01em; overflow-wrap: anywhere; }
.thread-header .msg-tags-row { padding: 0; margin-top: .6rem; gap: .4rem; }

/* Messages sit flat in the pane, divided by rules; the card is not a box. */
.thread-messages { padding: 0 0 1.75rem; }
.thread-messages .message { display: block; margin: 0; }
.thread-messages .message + .message { border-top: 1px solid var(--border-subtle); }
.thread-messages .msg-card {
  background: transparent; border: 0; border-radius: 0;
  box-shadow: none; overflow: visible;
}

/* Sender bar: tinted avatar, name, address, recipients, date and actions. */
.msg-sender-bar {
  display: flex; align-items: center; flex-wrap: wrap; gap: .75rem;
  padding: 1rem 1.75rem;
  background: var(--surface-1);
  border-bottom: 1px solid var(--border-subtle);
}
.msg-sender-bar .msg-avatar {
  width: 40px; height: 40px; margin: 0;
  font-size: .92rem; font-weight: 700;
}
.msg-sender-id { flex: 1 1 14rem; min-width: 0; }
.msg-sender-line { overflow-wrap: anywhere; }
.msg-sender-bar .msg-sender { font-size: .94rem; }
.msg-sender-email { margin-left: .35rem; font-size: .85rem; color: var(--text-muted); }
.msg-sender-id .msg-recipients { margin-top: 2px; font-size: .8rem; overflow-wrap: anywhere; }
.msg-recipients-cc { margin-left: .5rem; }
.msg-sender-actions { display: flex; align-items: center; flex-wrap: wrap; gap: .25rem; margin-left: auto; }
.msg-sender-actions .msg-date {
  width: auto; padding: 0; margin-right: .5rem;
  text-align: left; white-space: nowrap;
}

/* Avatar tint: ~16% of the colour behind coloured text, so it holds in light
   and dark. Classes only; the CSP forbids inline style. */
.msg-avatar.avatar-tint {
  --avatar-hue: #517faf;
  background: color-mix(in srgb, var(--avatar-hue) 16%, transparent);
  color: color-mix(in srgb, var(--avatar-hue) 72%, var(--text-primary));
}
.msg-avatar.avatar-colour-0 { --avatar-hue: #517faf; }
.msg-avatar.avatar-colour-1 { --avatar-hue: #5aad4a; }
.msg-avatar.avatar-colour-2 { --avatar-hue: #ee8d03; }
.msg-avatar.avatar-colour-3 { --avatar-hue: #8a6fb8; }
.msg-avatar.avatar-colour-4 { --avatar-hue: #e15e50; }
.msg-avatar.avatar-colour-5 { --avatar-hue: #d4a60a; }
.msg-avatar.avatar-colour-6 { --avatar-hue: #729fcf; }

/* Icon action buttons. */
.msg-act {
  display: inline-flex; align-items: center; justify-content: center; gap: .4rem;
  height: 32px; min-width: 32px; padding: 0 8px;
  border: 1px solid transparent; border-radius: var(--radius-sm);
  background: transparent; color: var(--text-secondary);
  font: inherit; font-size: .85rem; font-weight: 500; line-height: 1;
  text-decoration: none; cursor: pointer;
  transition: background var(--duration) var(--ease-out), color var(--duration) var(--ease-out);
}
.msg-act:hover { background: var(--surface-2); color: var(--text-primary); }
.msg-act-danger:hover { background: var(--error-bg-subtle); color: var(--error); }
.msg-act-sep { width: 1px; height: 18px; margin: 0 .25rem; background: var(--border-subtle); }

/* More menu. [hidden] is spelled out because display:flex would beat it. */
.msg-more { position: relative; }
.msg-more-menu {
  position: absolute; top: calc(100% + 6px); right: 0; z-index: 110;
  display: flex; flex-direction: column;
  min-width: 200px; max-width: calc(100vw - 32px); padding: 4px;
  background: var(--surface-1); border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md); box-shadow: var(--shadow-md);
}
.msg-more-menu[hidden] { display: none; }
.msg-more-item {
  display: block; width: 100%; padding: 8px 12px;
  border: 0; border-radius: var(--radius-sm); background: transparent;
  color: var(--text-primary); font: inherit; font-size: .88rem;
  text-align: left; text-decoration: none; cursor: pointer;
}
.msg-more-item:hover, .msg-more-item:focus-visible { background: var(--surface-2); }
.msg-more-form { margin: 0; }
.msg-more-menu .move-select { width: calc(100% - 8px); margin: 4px; }

/* Body: readable measure and line height. */
.thread-messages .msg-body {
  max-width: 760px; padding: 1.5rem 1.75rem 2rem;
  font-size: .95rem; line-height: 1.7; color: var(--text-primary);
  overflow-wrap: anywhere;
}
.thread-messages .email-body { max-width: 100%; overflow-x: auto; }
.thread-messages .blocked-banner { border-radius: 0; border-width: 0 0 1px; padding: 8px 1.75rem; }

.tag-chip-remove .icon { width: 10px; height: 10px; }
.attachment-preview .text-preview { max-width: 100%; min-width: 0; overflow-x: auto; }
.attachment-preview .text-preview pre {
  max-width: 100%; margin: 0; box-sizing: border-box;
  white-space: pre-wrap; overflow-wrap: anywhere; overflow-x: auto;
}

/* Quick reply: hands off to the composer. */
.quick-reply {
  max-width: 760px; margin: 0 1.75rem;
  padding: 1rem 1.25rem;
  background: var(--surface-1); border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg); box-shadow: var(--shadow-sm);
}
.quick-reply .quick-reply-textarea {
  display: block; width: 100%; min-height: 60px; padding: 0;
  border: 0; border-radius: 0; background: transparent; box-shadow: none;
  font-size: .9rem;
}
.quick-reply .quick-reply-footer { padding: 0; margin-top: .75rem; background: transparent; border-top: 0; }
.quick-reply-send {
  display: inline-flex; align-items: center; gap: .4rem;
  height: 32px; padding: 0 12px;
  background: var(--accent); color: var(--brand-text);
  border: 1px solid var(--accent); border-radius: var(--radius-sm);
  font: inherit; font-size: .85rem; font-weight: 600; cursor: pointer;
  box-shadow: var(--shadow-sm);
  transition: background var(--duration) var(--ease-out);
}
.quick-reply-send:hover { background: var(--accent-hover); border-color: var(--accent-hover); }
.reply-attach-btn { display: inline-flex; align-items: center; color: var(--text-muted); }
.reply-attach-btn:hover { color: var(--text-primary); }

@media (max-width: 768px) {
  .msg-sender-bar { padding: .85rem 1rem; }
  .thread-messages .msg-body { padding: 1rem 1rem 1.5rem; }
  .thread-messages .blocked-banner { padding: 8px 1rem; }
  .msg-attachments, .quick-reply { margin-left: 1rem; margin-right: 1rem; }
}
@media (max-width: 480px) {
  .msg-sender-actions { flex: 1 1 100%; margin-left: 0; }
  .msg-sender-actions .msg-date { flex: 1 1 100%; margin: 0 0 .25rem; }
  .msg-act-label { display: none; }
  /* Keep the tag panel on screen: anchor it to the row, not the button. */
  .thread-header .msg-tags-row { position: relative; }
  .thread-header .tag-add-wrapper { position: static; }
  .thread-header .tag-dropdown { left: 0; right: 0; max-width: none; }
}

/* ============================================
   TAG CHIPS (message detail view)
   ============================================ */
.msg-tags-row {
  display: flex; align-items: center; flex-wrap: wrap; gap: 6px;
  padding: 6px 16px 4px;
}

.msg-tags-chips {
  display: flex; align-items: center; flex-wrap: wrap; gap: 5px;
}

/* Individual tag chip */
.tag-chip {
  display: inline-flex; align-items: center; gap: 3px;
  background: color-mix(in srgb, var(--tag-colour, #517faf) 15%, transparent);
  color: var(--tag-colour, #517faf);
  border: 1px solid color-mix(in srgb, var(--tag-colour, #517faf) 35%, transparent);
  padding: 2px 6px 2px 9px; border-radius: 12px;
  font-size: 0.78rem; font-weight: 500; line-height: 1.4;
  white-space: nowrap;
}

.tag-chip-name {
  color: inherit; text-decoration: none;
}
.tag-chip-name:hover { text-decoration: underline; }

.tag-chip-remove {
  display: inline-flex; align-items: center; justify-content: center;
  width: 15px; height: 15px; border: none; background: transparent;
  color: inherit; opacity: 0.65; cursor: pointer; border-radius: 50%;
  font-size: 0.9rem; line-height: 1; transition: opacity 0.12s, background 0.12s;
  padding: 0;
}
.tag-chip-remove:hover { opacity: 1; background: color-mix(in srgb, var(--tag-colour, #517faf) 20%, transparent); }

/* Add-tag button */
.tag-add-wrapper { position: relative; }

.tag-add-btn {
  display: inline-flex; align-items: center;
  padding: 2px 9px; border-radius: 12px;
  border: 1px dashed var(--border-strong);
  background: transparent; color: var(--text-muted);
  font-size: 0.78rem; cursor: pointer;
  transition: color 0.12s, border-color 0.12s, background 0.12s;
}
.tag-add-btn:hover { color: var(--bongo-blue); border-color: var(--bongo-blue); background: var(--bongo-blue-lightest); }

/* Dropdown panel */
.tag-dropdown {
  position: absolute; left: 0; top: calc(100% + 4px); z-index: 200;
  background: var(--bg); border: 1px solid var(--border-strong);
  border-radius: var(--radius); box-shadow: var(--shadow-md);
  min-width: 200px; max-width: 280px;
  display: flex; flex-direction: column;
}
/* display:flex above beats the user-agent [hidden] rule, which left the panel
   open at every width; spell the hidden state out. */
.tag-dropdown[hidden] { display: none; }

.tag-search-input {
  width: 100%; box-sizing: border-box;
  padding: 7px 10px; border: none; border-bottom: 1px solid var(--border);
  background: transparent; color: var(--text); font-size: 0.85rem;
  outline: none; border-radius: var(--radius) var(--radius) 0 0;
}
.tag-search-input::placeholder { color: var(--text-muted); }

.tag-dropdown-list {
  list-style: none; margin: 0; padding: 4px 0;
  max-height: 220px; overflow-y: auto;
}

.tag-dropdown-item {
  display: flex; align-items: center; gap: 7px;
  width: 100%; padding: 6px 10px;
  border: none; background: transparent;
  color: var(--text); font-size: 0.85rem;
  cursor: pointer; text-align: left;
  transition: background 0.1s;
}
.tag-dropdown-item:hover { background: var(--bg-subtle); }
.tag-dropdown-item--active { font-weight: 600; }

.tag-swatch {
  display: inline-block; width: 10px; height: 10px;
  border-radius: 50%; flex-shrink: 0;
}

.tag-check { margin-left: auto; color: var(--bongo-green); font-size: 0.85rem; }

.tag-dropdown-create {
  border-top: 1px solid var(--border); padding: 4px 0;
}
.tag-dropdown-item--create { color: var(--bongo-blue); font-style: italic; }
.tag-dropdown-error { margin: 4px 8px; color: var(--error); font-size: 0.8rem; }
.tag-dropdown-error[hidden] { display: none; }

/* Tag settings page */
.tag-settings-row { flex-wrap: wrap; gap: 8px; }
.tag-settings-swatch { border-radius: 50%; border: 1px solid rgba(0,0,0,0.12); }
.tag-swatch-md { width: 14px; height: 14px; flex-shrink: 0; }

.tag-colour-picker {
  display: flex; flex-wrap: wrap; gap: 5px;
  max-width: 200px;
}
.tag-colour-swatch-btn {
  width: 20px; height: 20px; border-radius: 50%;
  border: 2px solid transparent; cursor: pointer;
  padding: 0; transition: transform 0.1s, outline 0.1s;
}
.tag-colour-swatch-btn:hover { transform: scale(1.2); }
.tag-colour-swatch-btn--selected { outline: 2px solid var(--text); outline-offset: 2px; }

.tag-palette-bg-0 { background: #517faf; }
.tag-palette-bg-1 { background: #5aad4a; }
.tag-palette-bg-2 { background: #ee8d03; }
.tag-palette-bg-3 { background: #8a6fb8; }
.tag-palette-bg-4 { background: #e15e50; }
.tag-palette-bg-5 { background: #d4a60a; }
.tag-palette-bg-6 { background: #729fcf; }
.tag-palette-bg-7 { background: #3bada8; }
.tag-palette-bg-8 { background: #e06c9f; }
.tag-palette-bg-9 { background: #70b8a8; }
.tag-palette-bg-10 { background: #c07d40; }
.tag-palette-bg-11 { background: #8c9e6b; }
.tag-palette-bg-12 { background: #a07ab8; }
.tag-palette-bg-13 { background: #4e9a8f; }
.tag-palette-bg-14 { background: #c96464; }
.tag-palette-bg-15 { background: #7a8fa8; }

.message-tag-colour-0 { --tag-colour: #3b82f6; }
.message-tag-colour-1 { --tag-colour: #22c55e; }
.message-tag-colour-2 { --tag-colour: #ef4444; }
.message-tag-colour-3 { --tag-colour: #f59e0b; }
.message-tag-colour-4 { --tag-colour: #8b5cf6; }
.message-tag-colour-5 { --tag-colour: #06b6d4; }
.message-tag-colour-6 { --tag-colour: #f97316; }
.message-tag-colour-7 { --tag-colour: #ec4899; }
.message-tag-colour-8 { --tag-colour: #14b8a6; }
.message-tag-colour-9 { --tag-colour: #6366f1; }
.message-tag-colour-10 { --tag-colour: #84cc16; }
.message-tag-colour-11 { --tag-colour: #eab308; }
.message-tag-colour-12 { --tag-colour: #64748b; }
.message-tag-colour-13 { --tag-colour: #a855f7; }
.message-tag-colour-14 { --tag-colour: #10b981; }
.message-tag-colour-15 { --tag-colour: #f43f5e; }

.message-tag-bg-0 { background: #3b82f6; }
.message-tag-bg-1 { background: #22c55e; }
.message-tag-bg-2 { background: #ef4444; }
.message-tag-bg-3 { background: #f59e0b; }
.message-tag-bg-4 { background: #8b5cf6; }
.message-tag-bg-5 { background: #06b6d4; }
.message-tag-bg-6 { background: #f97316; }
.message-tag-bg-7 { background: #ec4899; }
.message-tag-bg-8 { background: #14b8a6; }
.message-tag-bg-9 { background: #6366f1; }
.message-tag-bg-10 { background: #84cc16; }
.message-tag-bg-11 { background: #eab308; }
.message-tag-bg-12 { background: #64748b; }
.message-tag-bg-13 { background: #a855f7; }
.message-tag-bg-14 { background: #10b981; }
.message-tag-bg-15 { background: #f43f5e; }

.thread-depth-0 { padding-left: 0rem; }
.thread-depth-1 { padding-left: 2rem; }
.thread-depth-2 { padding-left: 4rem; }
.thread-depth-3 { padding-left: 6rem; }
.thread-depth-4 { padding-left: 8rem; }
.thread-depth-5 { padding-left: 10rem; }
.thread-depth-6 { padding-left: 12rem; }
.thread-depth-7 { padding-left: 14rem; }
.thread-depth-8 { padding-left: 16rem; }
.thread-depth-9 { padding-left: 18rem; }
.thread-depth-10 { padding-left: 20rem; }
.thread-depth-11 { padding-left: 22rem; }
.thread-depth-12 { padding-left: 24rem; }

/* Small icon button (edit/delete inline) */
.btn-icon {
  display: inline-flex; align-items: center; justify-content: center;
  width: 28px; height: 28px; border-radius: var(--radius);
  border: 1px solid var(--border); background: transparent;
  color: var(--text-secondary); font-size: 0.85rem; cursor: pointer;
  padding: 0; transition: background 0.12s, color 0.12s, border-color 0.12s;
}
.btn-icon:hover { background: var(--bg-muted); color: var(--text); border-color: var(--border-strong); }
.btn-icon--danger:hover { background: #fdf2f2; color: #c0392b; border-color: #f1aeb5; }
[data-theme="dark"] .btn-icon--danger:hover { background: #3a1a1a; color: #e74c3c; border-color: #5a2020; }

/* Ghost button (secondary action, no background) */
.btn-ghost {
  display: inline-flex; align-items: center; justify-content: center;
  padding: 5px 12px; border-radius: var(--radius);
  border: 1px solid var(--border); background: transparent;
  color: var(--text-secondary); font-size: 0.82rem; cursor: pointer;
  transition: background 0.12s, color 0.12s;
}
.btn-ghost:hover { background: var(--bg-muted); color: var(--text); }

/* ============================================
   14. COMPOSE
   ============================================ */
.compose-area { flex: 1; padding: 20px; overflow-y: auto; }

.compose-card {
  max-width: 820px; margin: 0 auto;
  background: var(--bg); border: 1px solid var(--border);
  border-radius: var(--radius-lg); box-shadow: var(--shadow-md);
  overflow: hidden;
}

.compose-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 12px 20px;
  background: var(--bg-subtle);
  border-bottom: 1px solid var(--border);
}
.compose-header-title { font-weight: 600; font-size: 0.95rem; color: var(--text); }
.compose-close {
  display: flex; align-items: center; justify-content: center;
  width: 28px; height: 28px; border: none; background: transparent;
  color: var(--text-muted); font-size: 1.3rem; cursor: pointer;
  border-radius: var(--radius); transition: background 0.12s, color 0.12s;
}
.compose-close:hover { background: var(--bg-muted); color: var(--text); }

/* Address and subject fields */
.compose-body { padding: 0 20px; }

.field-row {
  display: flex; align-items: flex-start; gap: 0; padding: 0;
  border-bottom: 1px solid var(--border);
}
.field-label {
  width: 56px; text-align: right;
  font-size: 0.82rem; font-weight: 500;
  color: var(--text-muted);
  padding: 10px 12px 10px 0; flex-shrink: 0;
}
.field-content { flex: 1; min-width: 0; }
.field-content input[type="text"],
.field-content input[type="email"] {
  width: 100%; border: none; padding: 9px 0;
  font-size: 0.92rem; background: transparent;
  color: var(--text); outline: none;
}
.field-content input::placeholder { color: var(--text-muted); }
.field-content input:focus-visible { outline: none; }

.field-actions {
  display: flex; align-items: center; gap: 2px;
  padding: 4px 0; flex-shrink: 0;
}

.cc-toggle {
  font-size: 0.8rem; color: var(--text-muted);
  cursor: pointer; padding: 5px 8px; border: none;
  background: transparent; border-radius: var(--radius);
  transition: background 0.12s, color 0.12s;
}
.cc-toggle:hover { background: var(--bg-muted); color: var(--bongo-blue); }
.cc-toggle.active { color: var(--bongo-blue); font-weight: 600; }

/* Recipient chips */
.chip-area {
  display: flex; flex-wrap: wrap; gap: 4px;
  align-items: center; min-height: 38px; padding: 4px 0;
}
.chip-area input[type="text"] { flex: 1; min-width: 120px; padding: 5px 0; }

.recipient-chip {
  display: inline-flex; align-items: center; gap: 4px;
  background: var(--bongo-blue-light); color: var(--bongo-blue-dark);
  padding: 3px 8px 3px 10px; border-radius: 14px;
  font-size: 0.82rem; font-weight: 500;
}
.chip-remove {
  display: inline-flex; align-items: center; justify-content: center;
  width: 16px; height: 16px; border: none; background: transparent;
  color: var(--bongo-blue); cursor: pointer; border-radius: 50%;
  font-size: 0.85rem; line-height: 1; transition: background 0.12s;
}
.chip-remove:hover { background: rgba(81,127,175,0.2); }

/* Format toolbar */
.format-toolbar {
  display: flex; align-items: center; gap: 2px;
  padding: 6px 20px;
  border-bottom: 1px solid var(--border);
  background: var(--bg-subtle);
}
.format-btn {
  padding: 4px 10px; border: none; background: transparent;
  border-radius: var(--radius); cursor: pointer;
  color: var(--text-secondary); font-size: 0.85rem;
  transition: background 0.12s, color 0.12s;
}
.format-btn:hover { background: var(--bg-muted); color: var(--text); }
.format-btn.active { background: var(--bongo-blue-light); color: var(--bongo-blue-dark); }

.format-sep { width: 1px; height: 18px; background: var(--border); margin: 0 4px; }

/* Rich editor (signature + compose body). CSP-safe: styles live here as classes
   because the app CSP is `style-src 'self'` (no unsafe-inline), so inline
   style="" attributes are blocked by the browser. */
.rich-editor {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--bg);
}
.rich-editor--block { width: 100%; box-sizing: border-box; }
.rich-editor-colour {
  width: 24px; height: 24px; border: none; background: transparent;
  cursor: pointer; padding: 0; vertical-align: middle;
}
.rich-editor-area {
  min-height: 200px; padding: 8px 12px; outline: none;
  font-size: 0.88rem; line-height: 1.5; color: var(--text);
}
.rich-editor-area--sm { min-height: 90px; }
.rich-editor-source {
  width: 100%; min-height: 200px; border: none; padding: 8px 12px;
  outline: none; font-size: 0.88rem; line-height: 1.5; resize: vertical;
  background: var(--bg); color: var(--text); box-sizing: border-box;
}
.rich-editor-source--sm { min-height: 90px; }
.rich-editor-file { display: none; }

/* Compose plain-mode body + mode toggle (CSP-safe classes). */
.compose-mode-toggle { display: flex; gap: 4px; padding: 4px 0; }
.compose-plain-body {
  width: 100%; min-height: 200px; border: 1px solid var(--border);
  border-radius: var(--radius); padding: 8px 12px; outline: none;
  font-size: 0.88rem; line-height: 1.5; resize: vertical;
  background: var(--bg); color: var(--text); box-sizing: border-box;
}

/* Compose textarea */
.compose-textarea {
  width: 100%; min-height: 320px; border: none;
  padding: 16px 20px;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
  font-size: 0.92rem; line-height: 1.65;
  resize: vertical; background: transparent;
  color: var(--text); outline: none;
}
.compose-textarea::placeholder { color: var(--text-muted); }
.compose-textarea:focus-visible { outline: none; }

/* Attachment area */
.attachment-area { padding: 0 20px 12px; }

.drop-zone {
  border: 2px dashed var(--border-strong);
  border-radius: var(--radius-lg); padding: 16px;
  text-align: center; color: var(--text-muted);
  font-size: 0.85rem; transition: border-color 0.15s, background 0.15s;
  cursor: pointer;
}
.drop-zone:hover,
.drop-zone.drag-over {
  border-color: var(--bongo-blue);
  background: var(--bongo-blue-light);
  color: var(--bongo-blue-dark);
}
.drop-zone-icon { font-size: 1.4rem; margin-bottom: 4px; }
.drop-zone-link { color: var(--bongo-blue); font-weight: 500; cursor: pointer; }

.attached-files { margin-top: 10px; display: flex; flex-direction: column; gap: 6px; }

.attached-file {
  display: flex; align-items: center; gap: 8px;
  padding: 6px 10px;
  background: var(--bg-subtle); border: 1px solid var(--border);
  border-radius: var(--radius); font-size: 0.82rem;
}
.attached-file-icon { font-size: 1rem; flex-shrink: 0; }
.attached-file-name {
  flex: 1; min-width: 0; overflow: hidden;
  text-overflow: ellipsis; white-space: nowrap;
  color: var(--text); font-weight: 500;
}
.attached-file-size { color: var(--text-muted); flex-shrink: 0; }
.attached-file-remove {
  border: none; background: transparent; color: var(--text-muted);
  cursor: pointer; padding: 2px 4px; border-radius: var(--radius);
  font-size: 0.9rem; transition: color 0.12s;
}
.attached-file-remove:hover { color: #e74c3c; }

/* Compose footer */
.compose-footer {
  display: flex; align-items: center; gap: 8px;
  padding: 12px 20px;
  background: var(--bg-subtle);
  border-top: 1px solid var(--border);
}
.compose-spacer { flex: 1; }

/* Shared buttons (used in compose, thread, contacts) */
.btn-send {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 8px 24px;
  background: var(--bongo-blue); color: #fff; border: none;
  border-radius: var(--radius); font-weight: 600; font-size: 0.9rem;
  cursor: pointer; transition: background 0.12s, transform 0.1s;
}
.btn-send:hover { background: var(--bongo-blue-dark); transform: translateY(-1px); }

.btn-secondary {
  display: inline-flex; align-items: center; gap: 4px;
  padding: 8px 16px;
  background: transparent; border: 1px solid var(--border);
  border-radius: var(--radius); color: var(--text-secondary);
  font-size: 0.85rem; cursor: pointer; transition: all 0.12s;
}
.btn-secondary:hover { background: var(--bg-muted); border-color: var(--border-strong); color: var(--text); }

.btn-discard {
  display: inline-flex; align-items: center; gap: 4px;
  padding: 8px 16px;
  background: transparent; border: 1px solid var(--border);
  border-radius: var(--radius); color: var(--text-muted);
  font-size: 0.85rem; cursor: pointer; transition: all 0.12s;
}
.btn-discard:hover { background: #fdf2f2; border-color: #e74c3c; color: #e74c3c; }
[data-theme="dark"] .btn-discard:hover { background: #3a1a1a; }