* { box-sizing: border-box; }
[hidden] { display: none !important; }
html, body { height: 100%; margin: 0; }
body {
  font-family: -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  font-size: 14px;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}

:root {
  --bg: #f3f5f9;
  --surface: #ffffff;
  --surface-alt: #fafbfd;
  --border: #e5e8f0;
  --border-soft: #eef0f6;
  --text: #1a2233;
  --text-dim: #626b7e;
  --muted: #939cae;
  --accent: #4a63f0;
  --accent-dim: #eef1ff;
  --accent-hover: #3a52dd;
  --ai-color: #8b5cf6;
  --danger: #e15554;
  --success: #22a06b;
  --warn: #f5a623;
  --radius: 10px;
  --radius-sm: 7px;
  --shadow-sm: 0 1px 2px rgba(20, 25, 45, 0.05);
  --shadow-md: 0 6px 24px rgba(20, 25, 45, 0.10);
  --shadow-lg: 0 12px 48px rgba(20, 25, 45, 0.18);
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    color-scheme: dark;
    --bg: #090b10;
    --surface: #11141b;
    --surface-alt: #171b24;
    --border: #2a303c;
    --border-soft: #202631;
    --text: #f3f5fa;
    --text-dim: #bcc4d3;
    --muted: #818b9d;
    --accent-dim: #202642;
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.25);
    --shadow-md: 0 6px 24px rgba(0, 0, 0, 0.35);
    --shadow-lg: 0 12px 48px rgba(0, 0, 0, 0.5);
  }
}
:root[data-theme="dark"] {
  color-scheme: dark;
  --bg: #090b10;
  --surface: #11141b;
  --surface-alt: #171b24;
  --border: #2a303c;
  --border-soft: #202631;
  --text: #f3f5fa;
  --text-dim: #bcc4d3;
  --muted: #818b9d;
  --accent-dim: #202642;
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.25);
  --shadow-md: 0 6px 24px rgba(0, 0, 0, 0.35);
  --shadow-lg: 0 12px 48px rgba(0, 0, 0, 0.5);
}

svg.icon { width: 17px; height: 17px; stroke: currentColor; fill: none; stroke-width: 1.9; stroke-linecap: round; stroke-linejoin: round; flex-shrink: 0; display: block; }

#app { height: 100vh; display: flex; flex-direction: column; }

/* ---------- Topbar ---------- */
#topbar {
  display: flex;
  align-items: center;
  gap: 20px;
  padding: 0 20px;
  height: 56px;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}
.brand { display: flex; align-items: center; gap: 8px; font-weight: 700; font-size: 15px; white-space: nowrap; color: var(--text); }
.brand-mark { color: var(--accent); display: flex; }
.spacer { flex: 1; }

.segmented {
  display: flex; background: var(--bg); border-radius: 8px; padding: 3px; gap: 2px;
}
.seg-btn {
  border: none; background: transparent; padding: 6px 16px; border-radius: 6px; cursor: pointer;
  font-size: 13px; font-weight: 500; color: var(--text-dim);
}
.seg-btn.active { background: var(--surface); color: var(--text); box-shadow: var(--shadow-sm); }
.seg-btn:hover:not(.active) { color: var(--text); }

/* Topbar Mail/Settings switcher reads as light tabs, not a boxed control —
   plainer than the Appearance page's option-picker segmented controls. */
#viewSwitcher { background: none; padding: 0; gap: 4px; }
#viewSwitcher .seg-btn { padding: 6px 4px; border-radius: 0; border-bottom: 2px solid transparent; }
#viewSwitcher .seg-btn.active { background: none; box-shadow: none; color: var(--accent); border-bottom-color: var(--accent); }
#viewSwitcher .seg-btn:hover:not(.active) { background: none; }

.top-actions { display: flex; align-items: center; gap: 12px; }
.ai-launch-btn { gap: 7px; border-color: color-mix(in srgb, var(--ai-color) 38%, var(--border)); color: var(--ai-color); background: color-mix(in srgb, var(--ai-color) 11%, var(--surface)); }
.ai-launch-btn:hover { border-color: var(--ai-color); background: color-mix(in srgb, var(--ai-color) 17%, var(--surface)); }
.sync-status { font-size: 12px; color: var(--muted); white-space: nowrap; max-width: 220px; overflow: hidden; text-overflow: ellipsis; }
.icon-cluster { display: flex; align-items: center; gap: 2px; }

/* Workspace switcher */
.ws-switcher { position: relative; }
.ws-switcher-btn {
  display: flex; align-items: center; gap: 8px; padding: 6px 10px; border-radius: 8px;
  border: 1px solid transparent; background: transparent; cursor: pointer; font-size: 13px;
  font-weight: 600; color: var(--text); max-width: 220px;
}
.ws-switcher-btn:hover { background: var(--bg); border-color: var(--border); }
.ws-icon { font-size: 15px; line-height: 1; }
.ws-chevron { display: flex; color: var(--muted); margin-left: 2px; }
#wsSwitcherLabel { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; max-width: 140px; }
.ws-menu {
  position: absolute; top: calc(100% + 6px); left: 0; min-width: 240px; background: var(--surface);
  border: 1px solid var(--border); border-radius: var(--radius); box-shadow: var(--shadow-md); padding: 6px; z-index: 150;
}
.ws-menu-item {
  display: flex; align-items: center; gap: 10px; padding: 8px 10px; border-radius: var(--radius-sm);
  cursor: pointer; font-size: 13.5px; color: var(--text);
}
.ws-menu-item:hover { background: var(--bg); }
.ws-menu-item.active { background: var(--accent-dim); color: var(--accent); font-weight: 600; }
.ws-menu-item .ws-icon { width: 20px; text-align: center; }
.ws-menu-item .count { margin-left: 8px; font-size: 11px; color: var(--muted); }
.ws-unread-badge {
  font-size: 10.5px; font-weight: 700; color: #fff; background: var(--accent);
  border-radius: 10px; padding: 1px 7px; flex-shrink: 0;
}
.ws-menu-item .ws-unread-badge { margin-left: auto; }
.ws-menu-sep { height: 1px; background: var(--border-soft); margin: 6px 2px; }
.ws-menu-manage { padding: 8px 10px; font-size: 13px; color: var(--accent); cursor: pointer; border-radius: var(--radius-sm); }
.ws-menu-manage:hover { background: var(--accent-dim); }
.ws-menu-quickadd { display: flex; align-items: center; gap: 6px; padding: 4px 6px; }
.ws-menu-quickadd input {
  flex: 1; min-width: 0; padding: 6px 9px; border: 1px solid var(--border); border-radius: 6px;
  font-size: 12.5px; background: var(--surface); color: var(--text);
}
.ws-menu-quickadd input:focus { outline: none; border-color: var(--accent); }
.ws-menu-quickadd .icon-btn { background: var(--accent-dim); color: var(--accent); border-radius: 6px; flex-shrink: 0; }
.ws-menu-quickadd .icon-btn:hover { background: var(--accent); color: #fff; }

.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 6px;
  padding: 7px 14px; border-radius: var(--radius-sm); border: 1px solid var(--border);
  background: transparent; color: var(--text-dim); cursor: pointer; font-size: 13px; font-weight: 500;
  transition: background .12s ease, border-color .12s ease, color .12s ease, transform .05s ease;
}
.btn:hover { background: var(--accent-dim); border-color: var(--accent); color: var(--text); }
.btn:active { transform: translateY(1px); }
.btn.primary { background: var(--accent); color: #fff; border-color: var(--accent); }
.btn.primary:hover { background: var(--accent-hover); border-color: var(--accent-hover); }
.btn.block { width: 100%; margin-top: 8px; }
.btn.icon-only { padding: 7px; width: 34px; height: 34px; }
.btn-icon { display: flex; }
.icon-btn {
  background: none; border: none; cursor: pointer; color: var(--text-dim); padding: 6px;
  border-radius: 6px; display: flex; align-items: center; justify-content: center;
}
.icon-btn:hover { background: var(--bg); color: var(--text); }
.shortcut-help-btn kbd { border: 0; background: transparent; box-shadow: none; padding: 0; min-width: auto; color: inherit; font: 700 14px/1 inherit; }

/* ---------- Body layout ---------- */
#body { flex: 1; display: flex; min-height: 0; }

#sidebar {
  width: 232px; flex-shrink: 0; background: var(--surface); border-right: 1px solid var(--border);
  display: flex; flex-direction: column; overflow-y: auto; padding: 14px 0;
}
.nav-section { padding: 0 12px 16px; }
.nav-title {
  font-size: 11px; text-transform: uppercase; letter-spacing: .05em; color: var(--muted);
  display: flex; justify-content: space-between; align-items: center; margin: 4px 4px 8px;
}
.add-btn {
  border: none; background: transparent; border-radius: 6px; width: 22px; height: 22px;
  cursor: pointer; color: var(--muted); display: flex; align-items: center; justify-content: center;
}
.add-btn:hover { background: var(--accent-dim); }
.add-btn svg { width: 13px; height: 13px; }

.nav-item {
  padding: 8px 10px; border-radius: var(--radius-sm); cursor: pointer; margin-bottom: 2px;
  display: flex; align-items: center; gap: 10px; color: var(--text-dim); font-size: 13.5px;
  transition: background .1s ease;
}
.nav-item:hover { background: var(--bg); color: var(--text); }
.nav-item.active { background: var(--accent-dim); color: var(--accent); font-weight: 600; }
.nav-icon { display: flex; color: inherit; opacity: 0.85; }
.nav-item .dot { width: 9px; height: 9px; border-radius: 50%; display: inline-block; flex-shrink: 0; }
.nav-item .label { flex: 1; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.nav-item .count { font-size: 11px; color: var(--muted); }
.account-unread-badge {
  min-width: 22px; height: 20px; padding: 0 7px; border-radius: 10px; flex-shrink: 0;
  display: inline-flex; align-items: center; justify-content: center;
  color: #fff; background: var(--accent); font-size: 11px; font-weight: 750;
  box-shadow: 0 2px 7px rgba(74, 99, 240, .22);
}
.nav-item .gear { opacity: 0; display: flex; color: var(--text-dim); }
.nav-item:hover .gear { opacity: 0.8; }
.nav-item .warn-flag { color: var(--warn); display: flex; }

#settingsSidebar .nav-item.settings-tab { font-size: 13.5px; }

/* ---------- Main content / views ---------- */
#mainContent { flex: 1; min-width: 0; display: flex; }
.view { flex: 1; display: flex; min-width: 0; min-height: 0; }
.view[hidden] { display: none; }

/* Mail view */
#messageListPane {
  width: 380px; flex-shrink: 0; background: var(--surface-alt); border-right: 1px solid var(--border);
  display: flex; flex-direction: column; min-height: 0;
}
#messageListHeader { padding: 14px 18px 12px; border-bottom: 1px solid var(--border); }
.list-title-row { display: flex; justify-content: space-between; align-items: baseline; font-weight: 700; font-size: 15px; margin-bottom: 10px; }
.list-search { display: flex; align-items: center; gap: 6px; }
.list-search input {
  flex: 1; min-width: 0; padding: 7px 12px; border-radius: 8px; border: 1px solid var(--border);
  background: var(--surface); outline: none; font-size: 13px; color: var(--text);
}
.list-search input:focus { border-color: var(--accent); }
.list-search .icon-btn { flex-shrink: 0; border: 1px solid var(--border); border-radius: 8px; }
.list-search .icon-btn.active { background: var(--accent-dim); color: var(--accent); border-color: var(--accent); }
#messageList { flex: 1; overflow-y: auto; }

.filter-panel { margin-top: 10px; padding: 12px; border: 1px solid var(--border); border-radius: var(--radius-sm); background: var(--surface-alt); }
.filter-row { display: flex; align-items: center; gap: 8px; margin-bottom: 8px; }
.filter-row label { width: 64px; flex-shrink: 0; font-size: 12px; color: var(--text-dim); }
.filter-row input, .filter-row select { flex: 1; padding: 5px 8px; border: 1px solid var(--border); border-radius: 6px; font-size: 12.5px; background: var(--surface); color: var(--text); }
.filter-row-inline { display: flex; gap: 14px; margin-bottom: 8px; flex-wrap: wrap; }
.filter-row-inline label { display: flex; align-items: center; gap: 5px; font-size: 12.5px; color: var(--text-dim); }
.filter-actions { display: flex; justify-content: flex-end; gap: 8px; margin-top: 4px; }

.active-filters-row { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 10px; }
.filter-chip {
  display: inline-flex; align-items: center; gap: 5px; font-size: 11.5px; font-weight: 500;
  padding: 3px 6px 3px 9px; border-radius: 12px; background: var(--accent-dim); color: var(--accent);
}
.filter-chip button {
  border: none; background: none; cursor: pointer; color: inherit; opacity: 0.7;
  display: flex; align-items: center; padding: 2px; border-radius: 50%;
}
.filter-chip button:hover { opacity: 1; background: rgba(0, 0, 0, 0.08); }
#filterToggleBtn.active { color: var(--accent); background: var(--accent-dim); }

.msg-row { padding: 12px 18px; border-bottom: 1px solid var(--border-soft); cursor: pointer; position: relative; display: flex; gap: 10px; transition: background .14s ease, transform .14s ease; }
.msg-row:hover { background: var(--bg); }
.msg-row.selected { background: var(--accent-dim); box-shadow: inset 3px 0 0 var(--accent); }
.msg-row.unread .msg-from { font-weight: 700; color: var(--text); }
.msg-row.unread::before {
  content: ''; position: absolute; left: 6px; top: 20px; width: 6px; height: 6px;
  border-radius: 50%; background: var(--accent);
}
.avatar {
  width: 34px; height: 34px; border-radius: 50%; flex-shrink: 0; display: flex; align-items: center;
  justify-content: center; font-size: 12.5px; font-weight: 700; color: #fff;
}
.msg-row-body { flex: 1; min-width: 0; }
.msg-row-top { display: flex; justify-content: space-between; gap: 8px; margin-bottom: 2px; }
.msg-from { font-size: 13.5px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; color: var(--text-dim); display: flex; align-items: center; gap: 4px; }
.msg-date { font-size: 11.5px; color: var(--muted); flex-shrink: 0; }
.msg-row-right { display: flex; align-items: center; gap: 2px; flex-shrink: 0; }
.row-menu-btn {
  border: none; background: none; cursor: pointer; color: var(--muted); padding: 3px;
  border-radius: 5px; display: flex; align-items: center; justify-content: center;
  opacity: 0; transition: opacity .1s ease;
}
.msg-row:hover .row-menu-btn, .row-menu-btn:focus-visible { opacity: 1; }
.row-menu-btn:hover { background: var(--bg); color: var(--text); }
.row-menu { z-index: 250; min-width: 190px; }
.ws-menu-label { padding: 4px 10px 2px; font-size: 10.5px; text-transform: uppercase; letter-spacing: .04em; color: var(--muted); }
.row-menu .ws-menu-item .dot { width: 8px; height: 8px; border-radius: 50%; flex-shrink: 0; }
.msg-subject { font-size: 13.5px; margin-bottom: 2px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; color: var(--text); }
.msg-snippet { font-size: 12.5px; color: var(--muted); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.msg-tags { display: flex; gap: 6px; margin-top: 6px; }
.tag-chip {
  display: inline-flex; align-items: center; gap: 5px; font-size: 10.5px; font-weight: 500;
  padding: 2px 8px 2px 6px; border-radius: 10px; color: var(--text-dim); background: var(--bg);
}
.tag-dot { width: 6px; height: 6px; border-radius: 50%; flex-shrink: 0; }
.flag-star { color: var(--warn); display: flex; }

#listPager { padding: 10px; }

#readingPane { flex: 1; background: var(--surface); display: flex; flex-direction: column; min-width: 0; }
.empty-state { margin: auto; color: var(--muted); text-align: center; display: flex; flex-direction: column; align-items: center; gap: 10px; }
.empty-state p { margin: 0; color: var(--text-dim); font-size: 15px; font-weight: 600; }
.empty-illustration { width: 64px; height: 64px; border-radius: 20px; background: var(--accent-dim); color: var(--accent); display: grid; place-items: center; transform: rotate(-3deg); box-shadow: 0 10px 28px rgba(74, 99, 240, .12); }
.empty-illustration svg { width: 28px; height: 28px; }
.empty-hint { font-size: 12px; color: var(--muted); }
.list-empty { min-height: 240px; padding: 48px 28px; display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 7px; text-align: center; color: var(--muted); }
.list-empty strong { color: var(--text-dim); font-size: 14px; }
.list-empty-mark { width: 38px; height: 38px; margin-bottom: 4px; border-radius: 13px; display: grid; place-items: center; color: var(--accent); background: var(--accent-dim); font-size: 18px; font-weight: 700; }
#readingContent { display: flex; flex-direction: column; height: 100%; min-height: 0; }
#readingHeader { padding: 14px 24px 12px; border-bottom: 1px solid var(--border-soft); }
.reading-subject-row { display: flex; align-items: center; gap: 10px; margin-bottom: 10px; }
#readingSubject { margin: 0; font-size: 17px; font-weight: 700; }
.thread-count-badge { font-size: 12px; font-weight: 600; color: var(--muted); background: var(--bg); padding: 2px 9px; border-radius: 10px; }
.reading-actions { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }
.reading-actions-secondary { padding-left: 2px; margin-right: 2px; border-left: 1px solid var(--border-soft); padding-left: 8px; }
.ghost-select, #categorySelect {
  border: 1px solid transparent; border-radius: var(--radius-sm); padding: 6px 10px; font-size: 13px;
  background: transparent; color: var(--text-dim);
}
.ghost-select:hover, #categorySelect:hover { background: var(--bg); border-color: var(--border); color: var(--text); }
#threadSortBtn.flipped span[data-icon] svg,
#threadSortBtn.flipped svg { transform: scaleY(-1); }
#flagBtn.active { color: var(--warn); border-color: var(--warn); background: rgba(245, 166, 35, 0.14); }
#flagBtn.overdue { color: var(--danger); border-color: var(--danger); background: rgba(225, 85, 84, 0.14); }
#spamBtn.active { color: var(--danger); border-color: var(--danger); background: rgba(225, 85, 84, 0.14); }
.flag-dropdown { position: relative; }
.flag-menu { top: calc(100% + 6px); left: 0; min-width: 190px; }
.flag-menu #flagCustomDateItem { display: flex; align-items: center; justify-content: space-between; gap: 8px; cursor: default; }
.flag-menu #flagCustomDateItem input[type=date] { border: 1px solid var(--border); border-radius: 6px; padding: 3px 6px; font-size: 12px; background: var(--surface); color: var(--text); }
.flag-due-badge { font-size: 10.5px; font-weight: 600; padding: 2px 8px; border-radius: 10px; background: rgba(245, 166, 35, 0.16); color: #b5730f; white-space: nowrap; }
.flag-due-badge.overdue { background: rgba(225, 85, 84, 0.16); color: var(--danger); }
:root[data-theme="dark"] .flag-due-badge { color: #f0c78a; }
:root[data-theme="dark"] .flag-due-badge.overdue { color: #f5a3a2; }
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .flag-due-badge { color: #f0c78a; }
  :root:not([data-theme="light"]) .flag-due-badge.overdue { color: #f5a3a2; }
}
.attachment-chip {
  font-size: 12px; padding: 5px 12px; border: 1px solid var(--border); border-radius: 14px;
  cursor: pointer; background: var(--surface-alt); text-decoration: none; color: var(--text);
  display: inline-flex; align-items: center; gap: 6px;
}
.attachment-chip:hover { background: var(--accent-dim); border-color: var(--accent); }

/* Thread / conversation view */
#threadMessages { flex: 1; overflow-y: auto; padding: 18px 28px 32px; background: linear-gradient(180deg, var(--surface-alt) 0, var(--surface) 220px); }
.thread-card { position: relative; border: 1px solid transparent; border-radius: 14px; margin-bottom: 6px; overflow: hidden; background: transparent; transition: background .16s ease, border-color .16s ease, box-shadow .16s ease, transform .16s ease; }
.thread-card:not(.expanded):hover { background: var(--surface); border-color: var(--border-soft); transform: translateY(-1px); }
.thread-card.expanded { margin: 8px 0 16px; border-color: var(--border); background: var(--surface); box-shadow: 0 12px 34px rgba(24, 32, 56, .09); }
.thread-card.unread:not(.expanded) { background: var(--accent-dim); }
.thread-card-head { width: 100%; display: flex; align-items: center; gap: 13px; padding: 11px 14px; border: 0; background: transparent; color: var(--text); font: inherit; text-align: left; cursor: pointer; }
.thread-card-head:focus-visible { outline: 2px solid var(--accent); outline-offset: -3px; border-radius: 13px; }
.thread-card.expanded .thread-card-head { padding: 16px 18px 12px; }
.thread-card-from { flex: 1; min-width: 0; display: flex; flex-direction: column; gap: 2px; }
.thread-card-from-line { display: flex; align-items: center; gap: 7px; min-width: 0; }
.thread-card-from-name { font-size: 14px; font-weight: 700; color: var(--text); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.message-direction-badge { padding: 2px 7px; border-radius: 9px; flex-shrink: 0; color: var(--muted); background: var(--bg); font-size: 10px; font-weight: 700; letter-spacing: .025em; text-transform: uppercase; }
.thread-card.expanded .message-direction-badge { color: var(--accent); background: var(--accent-dim); }
.thread-card-snippet { font-size: 13px; color: var(--muted); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.thread-card-date { font-size: 12px; color: var(--muted); white-space: nowrap; }
.thread-card-toggle { min-width: 42px; color: var(--accent); font-size: 12px; font-weight: 650; text-align: right; }
.thread-card-body { padding-bottom: 8px; }
.remote-image-notice { display:flex; align-items:center; gap:7px; margin:10px 20px 4px; padding:8px 10px; border:1px solid var(--border); border-radius:8px; color:var(--muted); font-size:12px; background:var(--surface-2); }
.remote-image-notice button { border:0; padding:0; background:none; color:var(--accent); font:inherit; font-weight:700; cursor:pointer; }
.thread-card-meta { display: flex; flex-direction: column; gap: 4px; margin: 0 18px 4px 65px; padding: 10px 12px; border-radius: 9px; background: var(--surface-alt); color: var(--text-dim); font-size: 12px; }
.thread-card-meta > div { display: grid; grid-template-columns: 38px minmax(0, 1fr); gap: 8px; }
.thread-card-meta dt { color: var(--muted); }
.thread-card-meta dd { margin: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.thread-card-attachments { padding: 10px 18px 2px 65px; display: flex; gap: 8px; flex-wrap: wrap; }
.thread-card-iframe { width: 100%; border: none; display: block; background: #fff; margin-top: 4px; }

button:focus-visible, input:focus-visible, select:focus-visible, [contenteditable="true"]:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

/* Compose Cc/Bcc + attachments */
.cc-toggle { background: none; border: none; color: var(--accent); font-size: 12.5px; cursor: pointer; padding: 4px 6px; flex-shrink: 0; }
.cc-toggle:hover { text-decoration: underline; }
#composeAttachmentsRow { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 10px; }
.compose-attachment-chip {
  display: inline-flex; align-items: center; gap: 6px; font-size: 12px; padding: 5px 8px 5px 12px;
  border: 1px solid var(--border); border-radius: 14px; background: var(--surface-alt); color: var(--text);
}
.compose-attachment-chip button { background: none; border: none; cursor: pointer; color: var(--muted); display: flex; padding: 2px; }
.compose-attachment-chip button:hover { color: var(--danger); }
.compose-attachment-chip.uploading { opacity: 0.6; }

.muted { color: var(--muted); }
.small { font-size: 12px; }

/* ---------- Settings view ---------- */
#settingsView { flex-direction: column; padding: 28px 36px; overflow-y: auto; max-width: 1100px; margin: 0 auto; width: 100%; }
.settings-page[hidden] { display: none; }
.page-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 20px; }
.page-header h2 { margin: 0; font-size: 20px; }
.panel { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 16px; margin-bottom: 16px; }

.master-detail { display: flex; gap: 20px; align-items: flex-start; }
.master-list { width: 260px; flex-shrink: 0; background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; }
.master-item {
  padding: 12px 14px; cursor: pointer; border-bottom: 1px solid var(--border-soft); font-size: 13.5px;
  display: flex; align-items: center; gap: 10px;
}
.master-item:last-child { border-bottom: none; }
.master-item:hover { background: var(--bg); }
.master-item.active { background: var(--accent-dim); color: var(--accent); font-weight: 600; }
.master-item .dot { width: 9px; height: 9px; border-radius: 50%; flex-shrink: 0; }
.master-item .name { flex: 1; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.master-item .warn-flag { color: var(--warn); display: flex; }
.shared-pill { padding: 2px 7px; border-radius: 999px; color: var(--accent); background: var(--accent-dim); font-size: 10.5px; font-weight: 700; }
.shared-workspace-notice { display: flex; align-items: flex-start; gap: 9px; margin: 12px 0; padding: 11px 13px; border: 1px solid var(--border); border-radius: 9px; color: var(--text-dim); background: var(--surface-alt); font-size: 12.5px; line-height: 1.45; }
.shared-workspace-notice svg { flex: 0 0 auto; margin-top: 1px; color: var(--accent); }
.workspace-sharing { margin-top: 20px; padding-top: 18px; border-top: 1px solid var(--border); }
.section-heading { display: flex; align-items: flex-start; justify-content: space-between; gap: 12px; margin-bottom: 10px; }
.section-heading h3 { margin: 0; font-size: 14px; }
.section-heading p { margin: 3px 0 0; color: var(--muted); font-size: 12px; }
.shared-count { color: var(--muted); font-size: 11.5px; }
.share-person-row { display: flex; gap: 8px; }
.share-person-row input { min-width: 0; flex: 1; padding: 8px 10px; border: 1px solid var(--border); border-radius: 8px; color: var(--text); background: var(--surface); }
.share-person-row .btn { gap: 6px; }
.workspace-members-list { margin-top: 10px; }
.workspace-member { display: flex; align-items: center; gap: 9px; padding: 8px 4px; border-top: 1px solid var(--border-soft); }
.workspace-member .avatar { width: 30px; height: 30px; font-size: 10px; }
.workspace-member-copy { display: flex; flex: 1; min-width: 0; flex-direction: column; }
.workspace-member-copy strong, .workspace-member-copy small { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.workspace-member-copy strong { font-size: 12.5px; }
.workspace-member-copy small, .workspace-members-empty { color: var(--muted); font-size: 11.5px; }
.workspace-members-empty { padding: 12px 2px; }

.detail-panel {
  flex: 1; min-width: 0; background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 22px; min-height: 400px; display: flex; flex-direction: column;
}
.detail-panel .empty-state { padding: 60px 0; }

.field-row { display: flex; align-items: center; gap: 10px; margin-bottom: 12px; }
.field-row label { width: 120px; flex-shrink: 0; color: var(--text-dim); font-size: 13px; }
.field-row input[type=text], .field-row input:not([type]), .field-row input[type=password], .field-row select {
  flex: 1; padding: 8px 11px; border: 1px solid var(--border); border-radius: var(--radius-sm); font-size: 13px; background: var(--surface);
}
.field-row input:focus, .field-row select:focus { outline: none; border-color: var(--accent); }
input, select { font-family: inherit; color: var(--text); }
fieldset { border: 1px solid var(--border-soft); border-radius: var(--radius); margin-bottom: 14px; padding: 14px; }
legend { font-size: 11.5px; color: var(--muted); padding: 0 6px; text-transform: uppercase; letter-spacing: .04em; }
.test-result { font-size: 13px; margin-top: 4px; margin-bottom: 8px; display: flex; align-items: center; gap: 6px; }
.test-result.ok { color: var(--success); }
.test-result.err { color: var(--danger); }
.form-actions { display: flex; align-items: center; gap: 8px; margin-top: 8px; padding-top: 14px; border-top: 1px solid var(--border-soft); }

/* Rich text toolbar / editor */
.toolbar {
  display: flex; flex-wrap: wrap; gap: 4px; padding: 6px; border: 1px solid var(--border);
  border-bottom: none; border-radius: var(--radius-sm) var(--radius-sm) 0 0; background: var(--surface-alt);
}
.toolbar button {
  border: 1px solid transparent; background: none; border-radius: 5px; padding: 5px 9px;
  cursor: pointer; font-size: 13px; min-width: 30px; color: var(--text-dim); display: flex; align-items: center; justify-content: center;
}
.toolbar button:hover { background: var(--accent-dim); border-color: var(--accent); color: var(--accent); }
.toolbar select, .toolbar input[type=color] {
  border: 1px solid var(--border); border-radius: 5px; font-size: 12px; padding: 4px;
  background: var(--surface); color: var(--text);
}
.editor {
  border: 1px solid var(--border); border-radius: 0 0 var(--radius-sm) var(--radius-sm); min-height: 260px; max-height: 44vh;
  overflow-y: auto; padding: 14px; font-size: 14px; outline: none; background: var(--surface);
}
.editor:focus { border-color: var(--accent); }
.editor img { max-width: 100%; }
.signature-editor { min-height: 180px; }
#sigName { width: 100%; padding: 9px 12px; border: 1px solid var(--border); border-radius: var(--radius-sm); margin-bottom: 12px; font-size: 14px; font-weight: 600; }
#sigName:focus { outline: none; border-color: var(--accent); }
#signatureEditor .field-row label { width: 130px; }

/* ---------- Compose drawer ---------- */
.drawer-overlay {
  position: fixed; inset: 0; background: rgba(20, 24, 40, 0.28);
  display: flex; justify-content: flex-end; z-index: 200;
}
.drawer {
  width: 46vw; min-width: 640px; max-width: 94vw; height: 100%; background: var(--surface);
  box-shadow: var(--shadow-lg); display: flex; flex-direction: column;
  animation: slideIn .22s cubic-bezier(.2,.7,.3,1); transition: width .18s ease, min-width .18s ease;
}
.drawer.expanded { width: 96vw; min-width: 0; }
@keyframes slideIn { from { transform: translateX(100%); } to { transform: translateX(0); } }
.drawer-header {
  padding: 16px 20px; border-bottom: 1px solid var(--border); display: flex;
  justify-content: space-between; align-items: center; font-weight: 700; font-size: 15px;
}
.drawer-header-actions { display: flex; align-items: center; gap: 2px; }
.drawer-body { padding: 18px 24px; overflow-y: auto; flex: 1; display: flex; flex-direction: column; }
.drawer-body .editor { flex: 1; min-height: 300px; max-height: none; }
.drawer.expanded .drawer-body .editor { min-height: 50vh; }
.drawer-footer { padding: 14px 20px; border-top: 1px solid var(--border); display: flex; align-items: center; gap: 8px; }
#composeAccount, #composeSignature { padding: 7px 11px; border: 1px solid var(--border); border-radius: var(--radius-sm); background: var(--surface); }
.recipient-input-wrap { position: relative; flex: 1; min-width: 0; }
.field-row .recipient-input-wrap input { width: 100%; }
.recipient-suggestions {
  position: absolute; top: calc(100% + 5px); left: 0; right: 0; z-index: 260;
  max-height: 286px; overflow-y: auto; padding: 6px;
  border: 1px solid var(--border); border-radius: 11px; background: var(--surface); box-shadow: var(--shadow-md);
}
.recipient-option {
  width: 100%; display: flex; align-items: center; gap: 10px; padding: 8px 9px;
  border: 0; border-radius: 8px; background: transparent; color: var(--text); font: inherit; text-align: left; cursor: pointer;
}
.recipient-option:hover, .recipient-option.active { background: var(--accent-dim); }
.recipient-option .avatar { width: 30px; height: 30px; font-size: 11px; }
.recipient-option-copy { flex: 1; min-width: 0; display: flex; flex-direction: column; gap: 1px; }
.recipient-option-name { overflow: hidden; color: var(--text); font-size: 13px; font-weight: 650; text-overflow: ellipsis; white-space: nowrap; }
.recipient-option-email { overflow: hidden; color: var(--muted); font-size: 12px; text-overflow: ellipsis; white-space: nowrap; }
.recipient-option-frequency { flex-shrink: 0; color: var(--muted); font-size: 11px; }
.recipient-suggestions-hint { padding: 5px 9px 3px; color: var(--muted); font-size: 11px; }

/* ---------- AI assistant ---------- */
.ai-settings-panel { max-width: 610px; }
.ai-settings-hero { display: flex; gap: 14px; align-items: center; margin-bottom: 22px; }
.ai-settings-hero h3 { margin: 0 0 4px; }
.ai-settings-hero p { margin: 0; color: var(--text-dim); line-height: 1.45; }
.ai-orb {
  width: 46px; height: 46px; flex: 0 0 auto; display: inline-flex; align-items: center; justify-content: center;
  border-radius: 15px; color: white; background: linear-gradient(145deg, var(--ai-color), color-mix(in srgb, var(--ai-color) 68%, #ffffff));
  box-shadow: 0 8px 22px color-mix(in srgb, var(--ai-color) 32%, transparent);
}
.ai-orb.small { width: 36px; height: 36px; border-radius: 12px; }
.ai-orb svg { width: 21px; height: 21px; }
.ai-clear-key { display: flex; gap: 8px; align-items: center; margin: 2px 0 16px 110px; color: var(--text-dim); font-size: 12.5px; }
.ai-privacy-note { display: flex; gap: 9px; align-items: flex-start; padding: 12px 14px; margin: 8px 0 14px; border-radius: 9px; background: var(--accent-dim); color: var(--text-dim); font-size: 12.5px; line-height: 1.45; }
.ai-privacy-note svg { flex: 0 0 auto; color: var(--accent); margin-top: 1px; }

.ai-panel {
  position: fixed; z-index: 280; top: 56px; right: 0; bottom: 0; width: 440px; max-width: 100vw;
  display: flex; flex-direction: column; background: var(--surface); border-left: 1px solid var(--border);
  --ai-panel-max: 440px; box-shadow: -14px 10px 44px rgba(20, 25, 45, .18); animation: slideIn .22s cubic-bezier(.2,.7,.3,1);
  transition: width .2s ease;
}
.ai-panel.expanded { width: min(980px, calc(100vw - 72px)); }
.ai-panel.expanded .ai-messages, .ai-panel.expanded .ai-quick-actions, .ai-panel.expanded .ai-composer, .ai-panel.expanded .ai-access-bar, .ai-panel.expanded .ai-context-toggle { width: min(760px, calc(100% - 40px)); margin-left: auto; margin-right: auto; }
.ai-panel-header { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 13px 15px; border-bottom: 1px solid var(--border); }
.ai-panel-brand { display: flex; align-items: center; gap: 10px; min-width: 0; }
.ai-panel-brand div { display: flex; flex-direction: column; min-width: 0; }
.ai-panel-brand strong { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; font-size: 14px; }
.ai-panel-brand small { color: var(--muted); font-size: 11px; margin-top: 2px; }
.ai-conversation-bar { display: flex; gap: 6px; align-items: center; padding: 9px 12px; background: var(--surface-alt); border-bottom: 1px solid var(--border-soft); }
.ai-conversation-bar select { flex: 1; min-width: 0; padding: 7px 9px; border: 1px solid var(--border); border-radius: 8px; color: var(--text); background: var(--surface); }
.ai-conversation-bar .icon-btn { width: 33px; height: 33px; color: var(--muted); }
.ai-messages { flex: 1; overflow-y: auto; padding: 18px 16px; scroll-behavior: smooth; }
.ai-welcome { min-height: 260px; display: flex; flex-direction: column; align-items: center; justify-content: center; text-align: center; padding: 24px; }
.ai-welcome h2 { margin: 18px 0 7px; font-size: 20px; }
.ai-welcome p { max-width: 330px; margin: 0; color: var(--text-dim); line-height: 1.55; }
.ai-message { display: flex; flex-direction: column; align-items: flex-start; margin: 0 0 15px; }
.ai-message.user { align-items: flex-end; }
.ai-message.assistant .ai-message-bubble { max-width: 90%; padding: 10px 13px; border-radius: 5px 15px 15px 5px; background: color-mix(in srgb, var(--ai-color) 7%, var(--surface-alt)); border: 1px solid color-mix(in srgb, var(--ai-color) 24%, var(--border-soft)); border-left: 3px solid var(--ai-color); line-height: 1.52; white-space: pre-wrap; overflow-wrap: anywhere; }
.ai-message.user .ai-message-bubble { max-width: 90%; padding: 10px 13px; line-height: 1.52; white-space: pre-wrap; overflow-wrap: anywhere; }
.ai-message.user .ai-message-bubble { border: 0; border-radius: 15px 15px 5px 15px; color: white; background: var(--accent); }
.ai-message:has(.ai-message-bubble:last-child) .ai-message-bubble { animation: aiAppear .18s ease-out; }
@keyframes aiAppear { from { opacity: .35; transform: translateY(3px); } }
.ai-use-draft { margin: 6px 0 0 5px; padding: 4px 7px; border: 0; background: transparent; color: var(--ai-color); font: inherit; font-size: 11.5px; font-weight: 650; cursor: pointer; }
.ai-use-draft:hover { text-decoration: underline; }
.ai-context-toggle { display: flex; align-items: center; gap: 7px; margin: 0 14px 9px; padding: 7px 10px; border-radius: 9px; color: var(--text-dim); background: var(--surface-alt); font-size: 11.5px; cursor: pointer; }
.ai-context-toggle input { margin: 0; accent-color: var(--ai-color); }
.ai-context-toggle svg { width: 14px; height: 14px; color: var(--ai-color); }
.ai-access-bar { display: grid; grid-template-columns: auto auto 1fr; gap: 8px; align-items: center; margin: 0 14px 9px; padding: 8px 10px; border: 1px solid color-mix(in srgb, var(--ai-color) 24%, var(--border)); border-radius: 10px; color: var(--text-dim); background: color-mix(in srgb, var(--ai-color) 6%, var(--surface-alt)); font-size: 12px; }
.ai-access-bar > svg { color: var(--ai-color); }
.ai-access-bar select { min-width: 0; padding: 6px 8px; border: 1px solid var(--border); border-radius: 7px; color: var(--text); background: var(--surface); font: inherit; }
.ai-quick-actions { display: grid; grid-template-columns: 1fr 1fr; gap: 7px; padding: 0 14px 12px; }
.ai-quick-actions button { padding: 9px 10px; border: 1px solid var(--border); border-radius: 10px; color: var(--text-dim); background: var(--surface); text-align: left; font: inherit; font-size: 12px; cursor: pointer; }
.ai-quick-actions button:hover { color: var(--accent); border-color: var(--accent); background: var(--accent-dim); }
.ai-quick-actions button:disabled { opacity: .45; cursor: not-allowed; color: var(--muted); border-color: var(--border); background: var(--surface); }
.ai-setup-notice { margin: auto 20px; padding: 18px; border: 1px solid var(--border); border-radius: 12px; background: var(--surface-alt); text-align: center; }
.ai-setup-notice strong, .ai-setup-notice span { display: block; }
.ai-setup-notice span { margin: 5px 0 13px; color: var(--text-dim); font-size: 12.5px; line-height: 1.45; }
.ai-composer { display: grid; grid-template-columns: 1fr auto; gap: 8px; padding: 12px 14px calc(10px + env(safe-area-inset-bottom)); border-top: 1px solid var(--border); background: var(--surface); }
.ai-composer textarea { resize: none; min-height: 42px; max-height: 130px; padding: 10px 12px; border: 1px solid var(--border); border-radius: 12px; color: var(--text); background: var(--surface-alt); font: inherit; line-height: 1.4; }
.ai-composer textarea:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-dim); }
.ai-composer .ai-send { width: 42px; height: 42px; padding: 0; align-items: center; justify-content: center; border-radius: 12px; }
.ai-composer small { grid-column: 1 / -1; text-align: center; color: var(--muted); font-size: 10.5px; }
.ai-inserted-draft { white-space: pre-wrap; margin-bottom: 14px; }
.compose-ai-btn { gap: 6px; color: var(--ai-color); border-color: color-mix(in srgb, var(--ai-color) 30%, var(--border)); }
.compose-ai-btn:hover { color: var(--ai-color); border-color: var(--ai-color); background: color-mix(in srgb, var(--ai-color) 10%, var(--surface)); }

:root[data-theme="dark"] #topbar,
:root[data-theme="dark"] .ai-panel,
:root[data-theme="dark"] .drawer { background: rgba(17, 20, 27, .97); backdrop-filter: blur(16px); }
:root[data-theme="dark"] .msg-row:hover { background: #151a23; }
:root[data-theme="dark"] .msg-row.selected { background: color-mix(in srgb, var(--accent) 15%, var(--surface)); }
:root[data-theme="dark"] .thread-card.expanded { box-shadow: 0 16px 42px rgba(0, 0, 0, .34); }
:root[data-theme="dark"] .drawer-overlay { background: rgba(0, 0, 0, .58); backdrop-filter: blur(3px); }
:root[data-theme="dark"] input,
:root[data-theme="dark"] select,
:root[data-theme="dark"] textarea { color-scheme: dark; }
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) #topbar,
  :root:not([data-theme="light"]) .ai-panel,
  :root:not([data-theme="light"]) .drawer { background: rgba(17, 20, 27, .97); backdrop-filter: blur(16px); }
  :root:not([data-theme="light"]) .msg-row:hover { background: #151a23; }
  :root:not([data-theme="light"]) .msg-row.selected { background: color-mix(in srgb, var(--accent) 15%, var(--surface)); }
  :root:not([data-theme="light"]) .drawer-overlay { background: rgba(0, 0, 0, .58); backdrop-filter: blur(3px); }
  :root:not([data-theme="light"]) input,
  :root:not([data-theme="light"]) select,
  :root:not([data-theme="light"]) textarea { color-scheme: dark; }
}

/* Pop-out window: compose/reading fills the whole window, no drawer chrome
   or backdrop, since the popout window itself is already a dedicated frame. */
body.popout-mode #topbar, body.popout-mode #sidebar, body.popout-mode #viewSwitcher, body.popout-mode #workspaceSwitcher { display: none; }
body.popout-mode #body { height: 100vh; }
body.popout-mode .drawer-overlay { position: static; background: none; display: block; height: 100vh; }
body.popout-mode .drawer { width: 100%; min-width: 0; max-width: none; height: 100vh; box-shadow: none; animation: none; }
body.popout-mode #messageListPane { display: none; }
body.popout-mode #readingPane { width: 100%; }
body.popout-mode #composePopoutBtn, body.popout-mode #threadPopoutBtn, body.popout-mode #composeExpandBtn { display: none; }

/* ---------- Categories editor ---------- */
.category-row { display: flex; align-items: center; gap: 10px; padding: 12px 16px; background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); margin-bottom: 8px; }
.category-row input[type=text] { flex: 1; padding: 6px 10px; border: 1px solid var(--border); border-radius: var(--radius-sm); }
.category-count { font-size: 12px; color: var(--muted); white-space: nowrap; }
.spam-bucket-toggle { display: flex; align-items: center; gap: 5px; font-size: 12px; color: var(--text-dim); white-space: nowrap; cursor: pointer; }
.rule-row { display: flex; gap: 6px; margin: 0 16px 8px 40px; font-size: 12.5px; align-items: center; }
.rule-row select, .rule-row input { padding: 5px 8px; border: 1px solid var(--border); border-radius: 6px; background: var(--surface); }
.rule-row input { flex: 1; }
.rule-row span { color: var(--text-dim); padding: 3px 8px; background: var(--bg); border-radius: 6px; }

/* ---------- Auth gate ---------- */
.auth-gate {
  position: fixed; inset: 0; background: var(--bg); display: flex; align-items: center; justify-content: center; z-index: 500;
}
.auth-box { width: 360px; max-width: 90vw; background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); box-shadow: var(--shadow-md); padding: 28px; }
.auth-brand { display: flex; align-items: center; gap: 8px; font-weight: 700; font-size: 16px; margin-bottom: 20px; color: var(--text); }
.auth-brand svg { color: var(--accent); }
.auth-box h2 { margin: 0 0 6px; font-size: 18px; }
.auth-box input {
  width: 100%; padding: 9px 12px; border: 1px solid var(--border); border-radius: var(--radius-sm);
  font-size: 13px; margin-top: 10px; background: var(--surface); color: var(--text);
}
.auth-box input:focus { outline: none; border-color: var(--accent); }
.auth-box .test-result { margin-top: 8px; }

/* ---------- Attachment preview ---------- */
.preview-overlay {
  position: fixed; inset: 0; background: rgba(15, 18, 32, 0.6);
  display: flex; align-items: center; justify-content: center; z-index: 300; padding: 24px;
}
.preview-box {
  background: var(--surface); border-radius: var(--radius); width: 920px; max-width: 100%;
  height: 88vh; display: flex; flex-direction: column; box-shadow: var(--shadow-lg); overflow: hidden;
}
.preview-header {
  padding: 14px 18px; border-bottom: 1px solid var(--border); display: flex;
  justify-content: space-between; align-items: center; font-weight: 600; gap: 12px;
}
.preview-header-actions { display: flex; align-items: center; gap: 6px; flex-shrink: 0; }
.preview-body { flex: 1; overflow: auto; background: #525659; display: flex; align-items: center; justify-content: center; }
.preview-body img { max-width: 100%; max-height: 100%; object-fit: contain; }
.preview-body iframe { width: 100%; height: 100%; border: none; background: #fff; }
.preview-unsupported { color: #d7dae2; text-align: center; padding: 40px; display: flex; flex-direction: column; align-items: center; gap: 10px; }
.preview-unsupported svg { color: #9aa0b5; }

/* ---------- Keyboard shortcuts ---------- */
.shortcut-overlay {
  position: fixed; inset: 0; z-index: 400; padding: 22px;
  display: grid; place-items: center; background: rgba(15, 18, 32, .52); backdrop-filter: blur(4px);
}
.shortcut-dialog {
  width: min(620px, 100%); overflow: hidden; border: 1px solid var(--border); border-radius: 16px;
  background: var(--surface); box-shadow: var(--shadow-lg); animation: shortcutIn .16s ease-out;
}
.shortcut-header { display: flex; align-items: flex-start; gap: 16px; padding: 20px 22px 16px; border-bottom: 1px solid var(--border-soft); }
.shortcut-header > div { flex: 1; }
.shortcut-header h2 { margin: 0; color: var(--text); font-size: 18px; }
.shortcut-header p { margin: 5px 0 0; color: var(--muted); font-size: 13px; }
.shortcut-groups { display: grid; grid-template-columns: 1fr 1fr; gap: 26px; padding: 20px 22px 22px; }
.shortcut-group h3 { margin: 0 0 10px; color: var(--muted); font-size: 11px; letter-spacing: .07em; text-transform: uppercase; }
.shortcut-row { min-height: 34px; display: flex; align-items: center; justify-content: space-between; gap: 14px; color: var(--text-dim); font-size: 14px; }
.shortcut-row > span:last-child { display: flex; align-items: center; gap: 5px; }
.shortcut-row em { color: var(--muted); font-size: 11px; font-style: normal; }
kbd {
  min-width: 27px; height: 25px; padding: 0 7px; display: inline-flex; align-items: center; justify-content: center;
  border: 1px solid var(--border); border-bottom-width: 2px; border-radius: 6px; background: var(--surface-alt);
  color: var(--text); font: 650 12px/1 -apple-system, "Segoe UI", sans-serif; box-shadow: 0 1px 2px rgba(20, 25, 45, .05);
}
.shortcut-footer { padding: 11px 22px; display: flex; align-items: center; justify-content: center; gap: 7px; border-top: 1px solid var(--border-soft); background: var(--surface-alt); color: var(--muted); font-size: 12px; }
@keyframes shortcutIn { from { opacity: 0; transform: translateY(8px) scale(.985); } to { opacity: 1; transform: none; } }

/* ---------- Toast ---------- */
#toast { position: fixed; bottom: 22px; right: 22px; display: flex; flex-direction: column; gap: 8px; z-index: 999; }
.toast-msg {
  background: #1c2540; color: #fff; padding: 11px 18px; border-radius: 8px; font-size: 13px;
  box-shadow: var(--shadow-md); animation: toastIn .18s ease;
}
.toast-msg.err { background: var(--danger); }
@keyframes toastIn { from { opacity: 0; transform: translateY(6px); } to { opacity: 1; transform: translateY(0); } }

/* ---------- Density ---------- */
body.density-compact .msg-row { padding: 7px 18px; gap: 8px; }
body.density-compact .msg-snippet { display: none; }
body.density-compact .nav-item { padding: 5px 10px; }
body.density-compact .thread-card-head { padding: 8px 16px; }
body.density-compact .avatar { width: 28px; height: 28px; font-size: 11px; }

body.density-spacious .msg-row { padding: 18px 22px; gap: 14px; }
body.density-spacious .nav-item { padding: 11px 12px; }
body.density-spacious .thread-card-head { padding: 16px 20px; }
body.density-spacious .avatar { width: 40px; height: 40px; font-size: 14px; }

/* ---------- Scrollbars (subtle) ---------- */
* { scrollbar-width: thin; scrollbar-color: #d0d5e2 transparent; }

/* ---------- Security & Users pages ---------- */
.panel-title { margin: 0 0 10px; font-size: 13.5px; font-weight: 600; }
.totp-qr { width: 168px; height: 168px; display: block; margin: 12px 0; border-radius: var(--radius-sm); background: #fff; padding: 6px; }
.backup-codes {
  background: var(--bg); border: 1px solid var(--border); border-radius: var(--radius-sm);
  padding: 12px; font-size: 13px; line-height: 1.9; letter-spacing: .04em; margin: 10px 0;
  white-space: pre-wrap; word-break: break-all;
}
.user-row {
  display: flex; align-items: center; gap: 12px; padding: 12px 16px; background: var(--surface);
  border: 1px solid var(--border); border-radius: var(--radius); margin-bottom: 8px; flex-wrap: wrap;
}
.user-row .user-main { flex: 1; min-width: 180px; }
.user-row .user-email { font-weight: 600; font-size: 13.5px; }
.user-row .user-meta { font-size: 12px; color: var(--muted); margin-top: 2px; }
.user-badge {
  font-size: 10.5px; font-weight: 600; text-transform: uppercase; letter-spacing: .04em;
  padding: 2px 7px; border-radius: 10px; background: var(--accent-dim); color: var(--accent);
}
.user-badge.muted-badge { background: var(--bg); color: var(--muted); }
.temp-password {
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace; background: var(--bg);
  padding: 2px 6px; border-radius: 4px; user-select: all;
}

/* ---------- Auth page extras ---------- */
.auth-check { display: flex; align-items: center; gap: 8px; margin-top: 12px; font-size: 12.5px; color: var(--text-dim); cursor: pointer; }
.auth-check input { width: auto; margin: 0; }
.auth-box .btn.block { margin-top: 12px; }
.auth-box form > .btn.block:not(.primary) { background: none; color: var(--text-dim); font-weight: 500; }

/* ---------- Mobile / responsive ---------- */
/* Desktop keeps the three-pane layout; below the breakpoint the panes become
   a single-pane stack driven by body[data-mobile-pane]. */
.mobile-only { display: none; }
.mobile-back {
  display: none; align-items: center; gap: 2px; border: none; background: none; cursor: pointer;
  color: var(--accent); font-size: 13px; font-weight: 600; padding: 0 0 10px; margin: 0;
}

@media (max-width: 760px) {
  .mobile-only { display: flex; }
  .mobile-back { display: flex; }

  /* The full desktop topbar is ~500px of content — far too wide for a phone.
     Row 1 holds identity + actions; Mail/Settings wraps to its own full-width
     row below, which also makes the tabs comfortably thumb-sized. */
  #topbar {
    flex-wrap: wrap;
    gap: 6px;
    height: auto;
    padding: 0 12px 4px;
    padding-top: env(safe-area-inset-top);
  }
  #topbar > * { min-width: 0; }
  #brandName, .sync-status { display: none; }
  #viewSwitcher { flex-basis: 100%; order: 10; justify-content: center; gap: 24px; }
  #viewSwitcher .seg-btn { padding: 8px 4px; font-size: 13px; }
  .ws-switcher-btn { max-width: 120px; padding: 6px; }
  .top-actions { gap: 4px; }
  .icon-cluster { gap: 0; }
  .icon-btn { min-width: 36px; min-height: 36px; }
  #composeBtn .btn-icon { margin: 0; }
  #composeBtn { padding: 8px 10px; font-size: 0; gap: 0; }
  #composeBtn svg { width: 18px; height: 18px; }
  .ai-launch-btn { padding: 8px 10px; font-size: 0; gap: 0; }
  .ai-launch-btn svg { width: 18px; height: 18px; }
  .ai-panel { top: 0; width: 100%; z-index: 280; }
  .ai-panel.expanded { width: 100%; }

  /* One pane at a time — plain flex children, so they sit under whatever
     height the (wrapping) topbar ends up being. */
  #sidebar, #messageListPane, #readingPane {
    width: 100%; min-width: 0; flex: 1 1 auto; border-right: none;
  }
  body[data-mobile-pane="list"] #sidebar,
  body[data-mobile-pane="reading"] #sidebar { display: none; }
  body[data-mobile-pane="sidebar"] #messageListPane,
  body[data-mobile-pane="reading"] #messageListPane { display: none; }
  body[data-mobile-pane="sidebar"] #readingPane,
  body[data-mobile-pane="list"] #readingPane { display: none; }

  /* Settings pages are a single column below the breakpoint */
  #mainContent { min-width: 0; }
  #settingsView .settings-page { padding: 16px 14px; }

  /* Compose fills the screen instead of being a 640px-wide drawer */
  .drawer {
    width: 100%; min-width: 0; max-width: none; height: 100%;
    padding-bottom: env(safe-area-inset-bottom);
  }
  .drawer.expanded { width: 100%; }
  .drawer-header { padding: 12px 14px; }
  .ai-clear-key { margin-left: 0; }

  /* Comfortable touch targets */
  .icon-btn { min-width: 40px; min-height: 40px; justify-content: center; }
  .nav-item { padding-top: 10px; padding-bottom: 10px; }
  .msg-row { padding-top: 12px; padding-bottom: 12px; }
  .row-menu-btn { opacity: 1; }

  #readingHeader, #messageListHeader { padding-left: 14px; padding-right: 14px; }
  .reading-actions { gap: 6px; }
  .shortcut-groups { grid-template-columns: 1fr; gap: 18px; }
  .shortcut-dialog { max-height: calc(100vh - 32px); overflow-y: auto; }
  #threadMessages { padding: 12px 10px 24px; }
  .thread-card-date { display: none; }
  .thread-card-toggle { min-width: 36px; }
  .thread-card-meta { margin-left: 14px; margin-right: 14px; }
  .thread-card-attachments { padding-left: 14px; padding-right: 14px; }
}