/* =============================================================
   MME 360 — Component Library
   Token-driven. Use these alongside (or in place of) .v2-* classes.
   ============================================================= */

/* ====================================================
   BUTTONS
   ==================================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--btn-padding-y) var(--btn-padding-x);
  font-family: inherit;
  font-size: var(--btn-font-size);
  font-weight: var(--btn-font-weight);
  line-height: 1;
  border-radius: var(--btn-radius);
  border: 1px solid var(--btn-default-border);
  background: var(--btn-default-bg);
  color: var(--btn-default-fg);
  cursor: pointer;
  text-decoration: none;
  white-space: nowrap;
  transition: background var(--transition-fast), border-color var(--transition-fast),
              color var(--transition-fast), box-shadow var(--transition-fast);
}
.btn:hover {
  background: var(--btn-default-hover-bg);
  border-color: var(--btn-default-hover-border);
}
.btn:focus-visible { outline: none; box-shadow: var(--shadow-focus); }
.btn:disabled { opacity: 0.55; cursor: not-allowed; }

.btn.primary {
  background: var(--btn-primary-bg);
  color: var(--btn-primary-fg);
  border-color: var(--btn-primary-border);
}
.btn.primary:hover { background: var(--btn-primary-hover-bg); border-color: var(--btn-primary-hover-bg); }

.btn.ghost {
  background: var(--btn-ghost-bg);
  border-color: transparent;
  color: var(--btn-ghost-fg);
}
.btn.ghost:hover { background: var(--btn-ghost-hover-bg); border-color: transparent; }

.btn.destructive {
  background: var(--btn-danger-bg);
  color: var(--btn-danger-fg);
  border-color: var(--btn-danger-bg);
}
.btn.destructive:hover { background: var(--btn-danger-hover-bg); border-color: var(--btn-danger-hover-bg); }

.btn.sm { padding: var(--btn-padding-y-sm) var(--btn-padding-x-sm); font-size: var(--text-sm); }
.btn.lg { padding: 10px 18px; font-size: var(--text-md); }
.btn.icon-only { padding: 6px; }

/* Icon button — used in topbar */
.icon-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border: none;
  background: transparent;
  color: var(--color-text-muted);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: background var(--transition-fast), color var(--transition-fast);
}
.icon-btn:hover { background: var(--color-bg-subtle); color: var(--color-text-default); }
.icon-btn:focus-visible { outline: none; box-shadow: var(--shadow-focus); }

/* ====================================================
   CARDS
   ==================================================== */
.card {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--card-radius);
  padding: var(--card-padding-y) var(--card-padding-x);
  box-shadow: var(--card-shadow);
}
.card.flush { padding: 0; overflow: hidden; }
.card.elevated { box-shadow: var(--shadow-md); }
.card.muted { background: var(--color-bg-canvas); }

.card-head {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin: 0 0 var(--space-6);
}
.card-head h2,
.card-head h3 {
  margin: 0;
  font-size: var(--text-md);
  font-weight: var(--font-semibold);
  color: var(--color-text-strong);
}
.card-head .actions { margin-left: auto; display: flex; gap: var(--space-2); align-items: center; }
.card-head .meta { color: var(--color-text-muted); font-size: var(--text-sm); }

/* ====================================================
   INPUTS
   ==================================================== */
.input,
.select,
.textarea {
  width: 100%;
  padding: var(--input-padding-y) var(--input-padding-x);
  font-size: var(--input-font-size);
  background: var(--input-bg);
  color: var(--input-fg);
  border: 1px solid var(--input-border);
  border-radius: var(--input-radius);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}
.input:hover, .select:hover, .textarea:hover { border-color: var(--slate-400); }
.input:focus, .select:focus, .textarea:focus {
  outline: none;
  border-color: var(--input-focus-border);
  box-shadow: var(--input-focus-ring);
}
.textarea { min-height: 84px; line-height: var(--leading-base); resize: vertical; }

.field { display: flex; flex-direction: column; gap: var(--space-1); }
.field label,
.field-label {
  font-size: var(--text-xs);
  font-weight: var(--font-semibold);
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: var(--tracking-eyebrow);
}
.field .hint { font-size: var(--text-xs); color: var(--color-text-muted); }

/* ====================================================
   TABLES
   ==================================================== */
.table {
  width: 100%;
  border-collapse: collapse;
  font-size: var(--text-base);
}
.table thead th {
  text-align: left;
  font-size: var(--text-xs);
  font-weight: var(--font-semibold);
  text-transform: uppercase;
  letter-spacing: var(--tracking-eyebrow);
  color: var(--table-header-fg);
  padding: var(--space-4) var(--space-6);
  background: var(--table-header-bg);
  border-bottom: 1px solid var(--color-border-default);
}
.table thead th.num { text-align: right; }
.table tbody td {
  padding: var(--space-4) var(--space-6);
  border-bottom: 1px solid var(--table-row-border);
  color: var(--color-text-default);
  vertical-align: middle;
}
.table tbody td.num { text-align: right; font-variant-numeric: tabular-nums; }
.table tbody td.mono { font-family: var(--font-mono); font-size: var(--text-sm); }
.table tbody tr:last-child td { border-bottom: none; }
.table tbody tr:hover td { background: var(--table-row-hover-bg); }
.table .row-clickable { cursor: pointer; }

/* ====================================================
   KPI STRIP
   ==================================================== */
.kpi-strip {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: var(--space-4);
  margin-bottom: var(--space-7);
}
.kpi {
  background: var(--color-bg-surface);
  border: 1px solid var(--color-border-default);
  border-radius: var(--radius-md);
  padding: var(--space-6) var(--space-7);
  position: relative;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}
.kpi.clickable { cursor: pointer; }
.kpi.clickable:hover { border-color: var(--color-brand-primary); box-shadow: var(--shadow-sm); }
.kpi-label {
  font-size: var(--text-xs);
  font-weight: var(--font-semibold);
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: var(--tracking-eyebrow);
}
.kpi-value {
  font-size: var(--text-2xl);
  font-weight: var(--font-semibold);
  color: var(--color-text-strong);
  margin-top: 2px;
  line-height: var(--leading-tight);
  font-variant-numeric: tabular-nums;
}
.kpi-hint { font-size: var(--text-xs); color: var(--color-text-muted); margin-top: 2px; }
.kpi-value.success { color: var(--color-success-fg); }
.kpi-value.warning { color: var(--color-warning-fg); }
.kpi-value.danger  { color: var(--color-danger-fg); }
.kpi-value.info    { color: var(--color-info-fg); }
.kpi-value.danger,
.v2-kpi-value.danger { color: var(--color-danger-fg); }

/* ====================================================
   BADGES & PILLS
   ==================================================== */
.badge,
.pill {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: var(--text-xs);
  font-weight: var(--font-semibold);
  padding: 2px 9px;
  border-radius: var(--radius-full);
  background: var(--slate-200);
  color: var(--color-text-default);
  white-space: nowrap;
  line-height: 1.5;
}
.badge.solid { background: var(--color-brand-primary); color: #fff; }
.badge.success, .pill.success { background: var(--color-success-bg); color: var(--color-success-fg); }
.badge.warning, .pill.warning { background: var(--color-warning-bg); color: var(--color-warning-fg); }
.badge.danger,  .pill.danger  { background: var(--color-danger-bg);  color: var(--color-danger-fg); }
.badge.info,    .pill.info    { background: var(--color-info-bg);    color: var(--color-info-fg); }
.badge.brand,   .pill.brand   { background: var(--color-brand-primary-soft); color: var(--color-brand-primary); }

.badge.dot::before,
.pill.dot::before {
  content: "";
  width: 6px; height: 6px; border-radius: 50%;
  background: currentColor;
  opacity: 0.75;
}

/* ====================================================
   ALERTS / BANNERS
   ==================================================== */
.alert {
  display: flex;
  gap: var(--space-5);
  align-items: flex-start;
  padding: var(--space-6) var(--space-7);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border-default);
  background: var(--color-bg-surface);
  font-size: var(--text-md);
}
.alert .alert-icon { flex-shrink: 0; font-size: 18px; line-height: 1.2; }
.alert .alert-body { flex: 1; min-width: 0; }
.alert .alert-title { font-weight: var(--font-semibold); color: var(--color-text-strong); margin-bottom: 2px; }
.alert .alert-msg { color: var(--color-text-muted); font-size: var(--text-base); }
.alert .alert-actions { margin-left: var(--space-5); display: flex; gap: var(--space-3); flex-shrink: 0; }

.alert.success { background: var(--color-success-bg); border-color: var(--emerald-100); }
.alert.success .alert-title { color: var(--color-success-fg); }
.alert.warning { background: var(--color-warning-bg); border-color: var(--amber-100); }
.alert.warning .alert-title { color: var(--color-warning-fg); }
.alert.danger  { background: var(--color-danger-bg);  border-color: var(--red-100); }
.alert.danger  .alert-title { color: var(--color-danger-fg); }
.alert.info    { background: var(--color-info-bg);    border-color: var(--blue-100); }
.alert.info    .alert-title { color: var(--color-info-fg); }
.alert.brand   { background: var(--color-brand-primary-soft); border-color: var(--mme-navy-200); }
.alert.brand   .alert-title { color: var(--color-brand-primary); }

/* ====================================================
   PAGE HEADER
   ==================================================== */
.page-header {
  background: var(--color-bg-surface);
  border-bottom: 1px solid var(--color-border-default);
  padding: var(--space-8) var(--space-9) 0 var(--space-9);
}
.page-header-row {
  display: flex;
  align-items: flex-start;
  gap: var(--space-7);
  margin-bottom: var(--space-6);
}
.page-title {
  font-size: var(--text-2xl);
  font-weight: var(--font-semibold);
  color: var(--color-text-strong);
  letter-spacing: var(--tracking-tight);
  line-height: var(--leading-tight);
  margin: 0;
}
.page-subtitle {
  font-size: var(--text-md);
  color: var(--color-text-muted);
  margin-top: 4px;
  line-height: var(--leading-snug);
}
.page-actions { margin-left: auto; display: flex; gap: var(--space-3); align-items: center; flex-shrink: 0; }

.page-body { padding: var(--space-8) var(--space-9); }

/* ====================================================
   TABS — line-under-active style
   ==================================================== */
.tabs {
  display: flex;
  gap: var(--space-1);
  border-bottom: 1px solid var(--color-border-default);
  margin: 0 calc(-1 * var(--space-9));
  padding: 0 var(--space-9);
}
.tab {
  background: transparent;
  border: none;
  padding: 10px var(--space-5);
  font-family: inherit;
  font-size: var(--text-md);
  font-weight: var(--font-medium);
  color: var(--color-text-muted);
  cursor: pointer;
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  transition: color var(--transition-fast);
}
.tab:hover { color: var(--color-text-default); }
.tab.active { color: var(--color-brand-primary); }
.tab.active::after {
  content: "";
  position: absolute;
  left: var(--space-5);
  right: var(--space-5);
  bottom: -1px;
  height: 2px;
  background: var(--color-brand-primary);
  border-radius: 2px;
}
.tab-badge {
  background: var(--color-bg-canvas);
  font-size: 10px;
  padding: 1px 6px;
  border-radius: var(--radius-full);
  font-weight: var(--font-semibold);
  color: var(--color-text-muted);
}
.tab.active .tab-badge { background: var(--color-brand-primary-soft); color: var(--color-brand-primary); }

/* ====================================================
   MODAL
   ==================================================== */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: var(--modal-overlay);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  padding: var(--space-7);
}
.modal {
  background: var(--modal-bg);
  border-radius: var(--modal-radius);
  box-shadow: var(--modal-shadow);
  max-width: 540px;
  width: 100%;
  max-height: calc(100vh - 80px);
  display: flex;
  flex-direction: column;
  overflow: hidden;
}
.modal.lg { max-width: 760px; }
.modal-head {
  padding: var(--space-7) var(--space-8);
  border-bottom: 1px solid var(--color-border-default);
  display: flex;
  align-items: center;
  gap: var(--space-5);
}
.modal-title {
  font-size: var(--text-lg);
  font-weight: var(--font-semibold);
  color: var(--color-text-strong);
  margin: 0;
  flex: 1;
}
.modal-close {
  background: transparent;
  border: none;
  color: var(--color-text-muted);
  cursor: pointer;
  padding: var(--space-1);
  border-radius: var(--radius-sm);
  font-size: 18px;
}
.modal-close:hover { background: var(--color-bg-subtle); color: var(--color-text-default); }
.modal-body { padding: var(--space-7) var(--space-8); overflow-y: auto; flex: 1; }
.modal-foot {
  padding: var(--space-5) var(--space-8);
  border-top: 1px solid var(--color-border-default);
  background: var(--color-bg-canvas);
  display: flex;
  gap: var(--space-3);
  justify-content: flex-end;
}

/* ====================================================
   EMPTY STATE
   ==================================================== */
.empty-state {
  text-align: center;
  padding: var(--space-12) var(--space-8);
  color: var(--color-text-muted);
}
.empty-state .empty-icon {
  width: 56px; height: 56px;
  border-radius: 50%;
  background: var(--color-bg-canvas);
  display: inline-flex; align-items: center; justify-content: center;
  font-size: 24px;
  color: var(--color-text-subtle);
  margin-bottom: var(--space-5);
}
.empty-state .empty-title {
  font-size: var(--text-lg);
  color: var(--color-text-default);
  font-weight: var(--font-semibold);
  margin-bottom: var(--space-2);
}
.empty-state .empty-msg { font-size: var(--text-md); }
.empty-state .empty-actions { margin-top: var(--space-6); display: inline-flex; gap: var(--space-3); }

/* ====================================================
   FILTER CHIPS
   ==================================================== */
.chip-bar {
  display: flex;
  gap: var(--space-2);
  align-items: center;
  flex-wrap: wrap;
}
.chip {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
  color: var(--color-text-muted);
  background: var(--color-bg-surface);
  border: 1px solid var(--color-border-default);
  padding: 5px 11px;
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: all var(--transition-fast);
}
.chip:hover { color: var(--color-text-default); border-color: var(--color-border-strong); }
.chip.active {
  background: var(--color-brand-primary);
  border-color: var(--color-brand-primary);
  color: #fff;
}

/* ====================================================
   AVATAR
   ==================================================== */
.avatar {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--mme-navy-600), var(--mme-navy-800));
  color: #fff;
  font-size: var(--text-xs);
  font-weight: var(--font-semibold);
  flex-shrink: 0;
}
.avatar.sm { width: 24px; height: 24px; font-size: 10px; }
.avatar.lg { width: 40px; height: 40px; font-size: var(--text-base); }

/* ====================================================
   UTILITIES (sparingly used)
   ==================================================== */
.text-muted { color: var(--color-text-muted); }
.text-strong { color: var(--color-text-strong); }
.text-danger { color: var(--color-danger-fg); }
.text-warning { color: var(--color-warning-fg); }
.text-success { color: var(--color-success-fg); }
.text-mono { font-family: var(--font-mono); font-size: var(--text-sm); }
.text-eyebrow {
  font-size: var(--text-xs);
  font-weight: var(--font-semibold);
  text-transform: uppercase;
  letter-spacing: var(--tracking-eyebrow);
  color: var(--color-text-muted);
}
.text-tabular { font-variant-numeric: tabular-nums; }

.stack { display: flex; flex-direction: column; gap: var(--space-5); }
.stack-sm { gap: var(--space-3); }
.stack-lg { gap: var(--space-8); }
.row { display: flex; align-items: center; gap: var(--space-3); }
.row.between { justify-content: space-between; }
.row.wrap { flex-wrap: wrap; }
.spacer { flex: 1; }

.divider { height: 1px; background: var(--color-border-default); margin: var(--space-6) 0; }

.scroll-y { overflow-y: auto; }
.hidden { display: none !important; }

/* =============================================================
   TICKET 3-COLUMN WORKSPACE (Option A pattern)
   List | Detail | Merged conversation
   ============================================================= */
.tk-3col {
  display: grid;
  grid-template-columns: 240px minmax(0, 1fr) 340px;
  min-height: calc(100vh - 260px);
  background: var(--m365-canvas);
}
.tk-3col-list {
  background: var(--m365-surface);
  border-right: 1px solid var(--m365-divider);
  overflow-y: auto;
}
.tk-3col-detail {
  background: var(--m365-canvas);
  padding: var(--space-6) var(--space-7);
  overflow-y: auto;
  min-width: 0;
}
.tk-3col-conv {
  background: var(--m365-surface);
  border-left: 1px solid var(--m365-divider);
  display: flex;
  flex-direction: column;
  min-width: 0;
}

/* Conversation column header */
.tk-conv-head {
  padding: var(--space-4) var(--space-5);
  border-bottom: 1px solid var(--m365-divider);
  font-size: var(--text-base);
  font-weight: var(--font-semibold);
  background: var(--m365-surface);
  display: flex;
  align-items: center;
  gap: var(--space-3);
  flex-shrink: 0;
}

/* Filter chip strip */
.tk-conv-filters {
  display: flex;
  gap: 4px;
  padding: var(--space-3) var(--space-5);
  border-bottom: 1px solid var(--m365-divider);
  background: var(--m365-surface);
  flex-shrink: 0;
}
.tk-chip {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 3px 9px;
  font-size: var(--text-xs);
  font-weight: var(--font-medium);
  border-radius: var(--radius-full);
  background: var(--m365-surface-2);
  color: var(--color-text-muted);
  border: none;
  cursor: pointer;
  font-family: inherit;
  transition: background var(--transition-fast), color var(--transition-fast);
}
.tk-chip:hover { background: var(--m365-divider); }
.tk-chip.active {
  background: var(--mme-navy-800);
  color: #fff;
}
.tk-chip .badge {
  font-size: 10px;
  padding: 0 5px;
  border-radius: var(--radius-full);
  background: rgba(0,0,0,0.10);
  color: inherit;
}
.tk-chip.active .badge { background: rgba(255,255,255,0.22); }

/* The thread itself */
.tk-thread-list {
  flex: 1;
  overflow-y: auto;
  padding: var(--space-5) var(--space-5);
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  background: var(--m365-canvas);
}

/* Message rows */
.tk-row {
  display: flex;
  gap: var(--space-3);
  max-width: 100%;
}
.tk-row .av {
  width: 26px;
  height: 26px;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 10px;
  font-weight: var(--font-semibold);
  color: #fff;
  flex-shrink: 0;
}
.tk-row.customer .av { background: var(--office-blue-600); }
.tk-row.internal .av { background: linear-gradient(135deg, var(--mme-navy-600), var(--mme-navy-900)); }
.tk-row .who {
  font-size: var(--text-xs);
  font-weight: var(--font-semibold);
  color: var(--color-text-strong);
  margin-bottom: 2px;
}
.tk-row .who .when {
  font-weight: var(--font-normal);
  color: var(--color-text-muted);
  margin-left: 6px;
}
.tk-row.internal .who .when { color: var(--color-warning-fg); }
.tk-row.customer .who .when { color: var(--office-blue-600); }
.tk-row .bubble {
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-md);
  font-size: var(--text-base);
  line-height: 1.5;
  word-break: break-word;
  color: var(--color-text-default);
}
.tk-row.customer .bubble {
  background: var(--m365-surface);
  border: 1px solid var(--m365-divider);
}
.tk-row.internal .bubble {
  background: var(--color-warning-bg);
  border-left: 2px solid var(--color-warning);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
}

/* System event — single line, no avatar */
.tk-event {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  padding: 2px var(--space-2);
}
.tk-event .ico {
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--m365-surface-2);
  color: var(--color-text-muted);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.tk-event .ico svg { width: 10px; height: 10px; }
.tk-event b { color: var(--color-text-default); font-weight: var(--font-medium); }

/* Day divider */
.tk-day-divider {
  align-self: center;
  font-size: 10px;
  color: var(--color-text-tertiary);
  background: var(--m365-surface);
  padding: 2px 10px;
  border-radius: var(--radius-full);
  border: 1px solid var(--m365-divider);
  margin: var(--space-2) 0;
}

/* Composer — type toggle accent */
.tk-composer-3col {
  border-top: 1px solid var(--m365-divider);
  padding: var(--space-3) var(--space-5);
  background: var(--m365-surface);
  flex-shrink: 0;
}
.tk-composer-3col-tabs {
  display: flex;
  gap: 4px;
  margin-bottom: var(--space-2);
}
.tk-c-tab {
  font-size: var(--text-xs);
  padding: 4px 10px;
  border-radius: var(--radius-xs);
  background: transparent;
  border: 1px solid transparent;
  color: var(--color-text-muted);
  cursor: pointer;
  font-family: inherit;
  font-weight: var(--font-medium);
  transition: all var(--transition-fast);
}
.tk-c-tab:hover { background: var(--m365-surface-2); }
.tk-c-tab.active.reply {
  background: var(--office-blue-50);
  color: var(--office-blue-700);
  font-weight: var(--font-semibold);
}
.tk-c-tab.active.internal {
  background: var(--color-warning-bg);
  color: var(--color-warning-fg);
  font-weight: var(--font-semibold);
}
.tk-composer-box {
  border: 1.5px solid var(--m365-divider);
  border-radius: var(--radius-md);
  padding: var(--space-3) var(--space-4);
  background: var(--m365-surface);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}
.tk-composer-box.mode-reply {
  border-color: var(--office-blue-500);
  box-shadow: 0 0 0 1px var(--office-blue-200);
}
.tk-composer-box.mode-internal {
  border-color: var(--color-warning);
  box-shadow: 0 0 0 1px var(--amber-100);
}
.tk-composer-box textarea {
  width: 100%;
  border: none;
  outline: none;
  font-family: inherit;
  font-size: var(--text-base);
  min-height: 56px;
  max-height: 160px;
  resize: vertical;
  background: transparent;
  color: var(--color-text-default);
}
.tk-composer-actions {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  margin-top: var(--space-2);
}
.tk-composer-actions .spacer { flex: 1; }
.tk-composer-actions .quick-replies {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  background: transparent;
  border: 1px solid var(--m365-divider);
  border-radius: var(--radius-xs);
  padding: 3px 8px;
  cursor: pointer;
  font-family: inherit;
}
.tk-composer-actions .quick-replies:hover { border-color: var(--neutral-grey-22); }
.tk-composer-actions .send-btn {
  background: var(--office-blue-500);
  color: #fff;
  border: none;
  padding: 5px 14px;
  font-size: var(--text-sm);
  font-weight: var(--font-semibold);
  border-radius: var(--radius-xs);
  cursor: pointer;
  font-family: inherit;
}
.tk-composer-actions .send-btn.internal { background: var(--color-warning); }
.tk-composer-actions .send-btn:hover { background: var(--office-blue-600); }
.tk-composer-actions .send-btn.internal:hover { background: var(--amber-700); }

/* Empty state in conversation */
.tk-thread-empty {
  text-align: center;
  padding: var(--space-9) var(--space-5);
  color: var(--color-text-muted);
  font-size: var(--text-sm);
}

/* ====================================================
   FOCUS-VISIBLE GLOBAL
   ==================================================== */
*:focus-visible {
  outline: 2px solid var(--color-focus-ring);
  outline-offset: 2px;
}
.btn:focus-visible, .icon-btn:focus-visible, .chip:focus-visible {
  outline: none;
  box-shadow: var(--shadow-focus);
}

/* ====================================================
   PRINT
   ==================================================== */
@media print {
  .v2-sidebar, .v2-topbar, .topbar, .sidebar, .page-actions, .icon-btn,
  .m365-app-bar, .m365-rail, .m365-command-bar { display: none !important; }
  .v2-main, .main, .m365-main { padding: 0 !important; margin-left: 0 !important; }
  body { background: #fff !important; }
}

/* =============================================================
   OFFICE 365 / FLUENT COMPONENTS
   New shell: top app bar + thin left rail + command bar + tiles.
   Coexists with old .v2-* classes; older pages keep working.
   ============================================================= */

/* ====================================================
   SHELL FRAME
   ==================================================== */
.m365-shell {
  display: grid;
  grid-template-rows: var(--m365-app-bar-height) 1fr;
  grid-template-columns: var(--m365-rail-width) 1fr;
  grid-template-areas:
    "app-bar app-bar"
    "rail    main";
  min-height: 100vh;
  background: var(--m365-canvas);
}

/* ----- Top app bar (navy) ----- */
.m365-app-bar {
  grid-area: app-bar;
  background: var(--m365-app-bar-bg);
  color: var(--m365-app-bar-fg);
  display: flex;
  align-items: stretch;
  gap: 0;
  padding: 0;
  font-size: var(--text-md);
}
.m365-app-bar-section { display: flex; align-items: center; }
.m365-app-bar-section.right { margin-left: auto; }

.m365-waffle {
  width: var(--m365-app-bar-height);
  height: var(--m365-app-bar-height);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--m365-app-bar-fg);
  background: transparent;
  border: none;
  cursor: pointer;
  transition: background var(--transition-fast);
}
.m365-waffle:hover { background: var(--m365-app-bar-hover); }
.m365-waffle svg { width: 18px; height: 18px; }

.m365-app-name {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: 0 var(--space-5) 0 var(--space-2);
  font-size: var(--text-md);
  font-weight: var(--font-semibold);
  letter-spacing: -0.005em;
  color: var(--m365-app-bar-fg);
  text-decoration: none;
}
.m365-app-name b { color: var(--color-brand-accent); font-weight: var(--font-semibold); }
.m365-app-name:hover { color: var(--m365-app-bar-fg); }

.m365-app-bar-search {
  flex: 1;
  max-width: 580px;
  margin: 8px var(--space-9);
  background: rgba(255, 255, 255, 0.16);
  color: #fff;
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  padding: 0 12px;
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-size: var(--text-md);
  cursor: text;
  transition: background var(--transition-fast), border-color var(--transition-fast);
}
.m365-app-bar-search:hover { background: rgba(255,255,255,0.20); }
.m365-app-bar-search:focus-within {
  background: #fff;
  color: var(--neutral-grey-90);
  border-color: var(--color-brand-accent);
}
.m365-app-bar-search:focus-within .placeholder { color: var(--neutral-grey-50); }
.m365-app-bar-search svg { width: 16px; height: 16px; flex-shrink: 0; }
.m365-app-bar-search .placeholder {
  color: rgba(255, 255, 255, 0.70);
  flex: 1;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.m365-app-bar-search input {
  flex: 1;
  background: transparent;
  border: none;
  outline: none;
  color: inherit;
  font-size: var(--text-md);
  font-family: inherit;
}
.m365-app-bar-search input::placeholder { color: inherit; opacity: 0.7; }

.m365-app-bar-action {
  width: var(--m365-app-bar-height);
  height: var(--m365-app-bar-height);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  border: none;
  color: var(--m365-app-bar-fg);
  cursor: pointer;
  text-decoration: none;
  position: relative;
  transition: background var(--transition-fast);
}
.m365-app-bar-action:hover { background: var(--m365-app-bar-hover); color: var(--m365-app-bar-fg); }
.m365-app-bar-action svg { width: 16px; height: 16px; }
.m365-app-bar-action .badge-dot {
  position: absolute;
  top: 10px; right: 10px;
  width: 8px; height: 8px;
  background: var(--color-danger);
  border-radius: 50%;
  border: 2px solid var(--m365-app-bar-bg);
}

.m365-persona {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--m365-persona-bg);
  color: var(--m365-persona-fg);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: var(--text-xs);
  font-weight: var(--font-semibold);
  margin: 0 var(--space-5);
  cursor: pointer;
  text-decoration: none;
  border: 2px solid transparent;
  transition: border-color var(--transition-fast);
}
.m365-persona:hover { border-color: rgba(255, 255, 255, 0.40); color: var(--m365-persona-fg); }

/* ----- Left rail (thin icon column) ----- */
.m365-rail {
  grid-area: rail;
  background: var(--m365-rail-bg);
  border-right: 1px solid var(--m365-rail-border);
  display: flex;
  flex-direction: column;
  align-items: stretch;
  padding: var(--space-3) 0;
  gap: 2px;
  overflow-y: auto;
  position: sticky;
  top: var(--m365-app-bar-height);
  height: calc(100vh - var(--m365-app-bar-height));
}

.m365-rail-item {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 44px;
  margin: 0 6px;
  border-radius: var(--radius-sm);
  color: var(--m365-rail-fg);
  text-decoration: none;
  position: relative;
  transition: background var(--transition-fast), color var(--transition-fast);
}
.m365-rail-item:hover { background: var(--m365-rail-hover-bg); color: var(--m365-rail-fg); }
.m365-rail-item.active {
  background: var(--m365-rail-active-bg);
  color: var(--m365-rail-active-fg);
}
.m365-rail-item.active::before {
  content: "";
  position: absolute;
  left: -6px;
  top: 8px; bottom: 8px;
  width: 3px;
  background: var(--m365-rail-active-marker);
  border-radius: 2px;
}
.m365-rail-item svg { width: 20px; height: 20px; }

/* Hover tooltip on rail */
.m365-rail-item .rail-tip {
  position: absolute;
  left: calc(100% + 8px);
  top: 50%;
  transform: translateY(-50%);
  background: var(--neutral-grey-90);
  color: #fff;
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
  padding: 5px 10px;
  border-radius: var(--radius-xs);
  white-space: nowrap;
  pointer-events: none;
  opacity: 0;
  transition: opacity var(--transition-fast);
  z-index: 50;
  box-shadow: var(--fluent-shadow-8);
}
.m365-rail-item:hover .rail-tip { opacity: 1; }

.m365-rail-divider {
  height: 1px;
  background: var(--m365-rail-border);
  margin: var(--space-3) var(--space-3);
}

.m365-rail-footer { margin-top: auto; padding-bottom: var(--space-3); }

/* ----- Main column ----- */
.m365-main {
  grid-area: main;
  min-width: 0;
  display: flex;
  flex-direction: column;
}

/* Page header — title + subtitle */
.m365-page-header {
  background: var(--m365-surface);
  border-bottom: 1px solid var(--m365-divider);
  padding: var(--space-8) var(--space-9) var(--space-6);
}
.m365-page-row {
  display: flex;
  align-items: flex-start;
  gap: var(--space-7);
}
.m365-page-title {
  font-size: var(--text-2xl);
  font-weight: var(--font-semibold);
  color: var(--color-text-strong);
  letter-spacing: -0.01em;
  margin: 0;
}
.m365-page-subtitle {
  font-size: var(--text-md);
  color: var(--color-text-muted);
  margin-top: 4px;
}
.m365-page-actions { margin-left: auto; display: flex; gap: var(--space-3); }

/* ----- Command bar (Office-style) ----- */
.m365-command-bar {
  background: var(--m365-command-bar-bg);
  border-bottom: 1px solid var(--m365-command-bar-border);
  padding: 0 var(--space-9);
  height: var(--m365-command-bar-height);
  display: flex;
  align-items: center;
  gap: 0;
  flex-shrink: 0;
}
.m365-command-btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  height: 36px;
  padding: 0 var(--space-4);
  background: transparent;
  border: 1px solid transparent;
  border-radius: var(--radius-xs);
  color: var(--m365-command-button-fg);
  font-family: inherit;
  font-size: var(--text-md);
  font-weight: var(--font-normal);
  cursor: pointer;
  text-decoration: none;
  white-space: nowrap;
  transition: background var(--transition-fast);
}
.m365-command-btn svg { width: 16px; height: 16px; flex-shrink: 0; }
.m365-command-btn:hover { background: var(--m365-command-button-hover-bg); color: var(--m365-command-button-fg); }
.m365-command-btn:active { background: var(--m365-command-button-active-bg); }
.m365-command-btn.primary { color: var(--office-blue-600); font-weight: var(--font-semibold); }
.m365-command-btn.primary:hover { background: var(--office-blue-50); }
.m365-command-btn .caret { margin-left: 2px; opacity: 0.6; }
.m365-command-sep {
  width: 1px;
  height: 22px;
  background: var(--m365-divider);
  margin: 0 var(--space-3);
}
.m365-command-bar .spacer { flex: 1; }

/* Page content area */
.m365-content { padding: var(--space-8) var(--space-9); flex: 1; }
.m365-content.flush { padding: 0; }

/* ----- Tiles (Office tile pattern) ----- */
.m365-tile-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: var(--space-5);
}
.m365-tile {
  background: var(--m365-tile-bg);
  border: 1px solid var(--m365-tile-border);
  border-radius: var(--radius-sm);
  padding: var(--space-6);
  text-decoration: none;
  color: inherit;
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  transition: box-shadow var(--transition-fast), transform var(--transition-fast), border-color var(--transition-fast);
  position: relative;
}
.m365-tile:hover {
  box-shadow: var(--m365-tile-hover-shadow);
  border-color: var(--neutral-grey-22);
  transform: translateY(-1px);
}
.m365-tile-icon {
  width: var(--m365-tile-icon-size);
  height: var(--m365-tile-icon-size);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-xs);
  color: var(--office-blue-600);
  background: var(--office-blue-50);
}
.m365-tile-icon svg { width: 18px; height: 18px; }
.m365-tile-icon.brand { color: #fff; background: var(--color-brand-primary); }
.m365-tile-icon.success { color: var(--color-success-fg); background: var(--color-success-bg); }
.m365-tile-icon.warning { color: var(--color-warning-fg); background: var(--color-warning-bg); }
.m365-tile-icon.danger  { color: var(--color-danger-fg);  background: var(--color-danger-bg); }

.m365-tile-title {
  font-size: var(--text-md);
  font-weight: var(--font-semibold);
  color: var(--color-text-strong);
  line-height: var(--leading-tight);
}
.m365-tile-meta { font-size: var(--text-sm); color: var(--color-text-muted); }
.m365-tile-foot {
  margin-top: auto;
  padding-top: var(--space-3);
  border-top: 1px solid var(--m365-divider);
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: var(--text-xs);
  color: var(--color-text-muted);
}

/* Compact "card row" — list pattern with icon-left */
.m365-list { background: var(--m365-surface); border: 1px solid var(--m365-divider); border-radius: var(--radius-sm); overflow: hidden; }
.m365-list-item {
  display: flex;
  align-items: center;
  gap: var(--space-5);
  padding: var(--space-5) var(--space-7);
  border-bottom: 1px solid var(--m365-divider);
  text-decoration: none;
  color: inherit;
  transition: background var(--transition-fast);
}
.m365-list-item:last-child { border-bottom: none; }
.m365-list-item:hover { background: var(--m365-surface-2); }
.m365-list-item-icon { width: 32px; height: 32px; display: inline-flex; align-items: center; justify-content: center; flex-shrink: 0; color: var(--office-blue-600); }
.m365-list-item-body { flex: 1; min-width: 0; }
.m365-list-item-title { font-size: var(--text-md); font-weight: var(--font-medium); color: var(--color-text-strong); }
.m365-list-item-meta { font-size: var(--text-sm); color: var(--color-text-muted); margin-top: 2px; }

/* ----- Pivot tabs (Office style) ----- */
.m365-pivot {
  display: flex;
  gap: 0;
  border-bottom: 1px solid var(--m365-divider);
  padding: 0 var(--space-9);
  background: var(--m365-surface);
}
.m365-pivot-tab {
  background: transparent;
  border: none;
  padding: 12px var(--space-5);
  font-family: inherit;
  font-size: var(--text-md);
  font-weight: var(--font-normal);
  color: var(--m365-pivot-fg);
  cursor: pointer;
  position: relative;
  transition: color var(--transition-fast);
}
.m365-pivot-tab:hover { color: var(--m365-pivot-active-fg); }
.m365-pivot-tab.active {
  color: var(--m365-pivot-active-fg);
  font-weight: var(--font-semibold);
}
.m365-pivot-tab.active::after {
  content: "";
  position: absolute;
  left: var(--space-5);
  right: var(--space-5);
  bottom: -1px;
  height: 2px;
  background: var(--m365-pivot-active-bar);
}

/* ----- Persona pill (used in app bar + content) ----- */
.m365-callout {
  background: var(--m365-surface);
  border: 1px solid var(--m365-divider);
  border-radius: var(--radius-sm);
  box-shadow: var(--fluent-shadow-16);
  padding: var(--space-6);
}

/* ----- KPI tile (Office-style metric tile) ----- */
.m365-metric {
  background: var(--m365-surface);
  border: 1px solid var(--m365-divider);
  border-radius: var(--radius-sm);
  padding: var(--space-6) var(--space-7);
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.m365-metric .label {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  font-weight: var(--font-normal);
}
.m365-metric .value {
  font-size: var(--text-2xl);
  font-weight: var(--font-semibold);
  color: var(--color-text-strong);
  font-variant-numeric: tabular-nums;
  line-height: var(--leading-tight);
}
.m365-metric .delta { font-size: var(--text-xs); color: var(--color-text-muted); }
.m365-metric.warning .value { color: var(--color-warning-fg); }
.m365-metric.danger  .value { color: var(--color-danger-fg); }
.m365-metric.success .value { color: var(--color-success-fg); }
.m365-metric-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: var(--space-4);
  margin-bottom: var(--space-7);
}

/* ----- Office Ribbon-style tab strip (primary horizontal nav) ----- */
.m365-tab-strip {
  background: var(--m365-app-bar-bg);
  display: flex;
  align-items: stretch;
  padding: 0 var(--space-3);
  gap: 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  overflow-x: auto;
  scrollbar-width: thin;
  scrollbar-color: rgba(255,255,255,0.20) transparent;
}
.m365-tab-strip::-webkit-scrollbar { height: 4px; }
.m365-tab-strip::-webkit-scrollbar-thumb { background: rgba(255,255,255,0.15); }

.m365-tab-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: 0 var(--space-5);
  height: 36px;
  font-size: var(--text-md);
  font-weight: var(--font-medium);
  color: rgba(255, 255, 255, 0.80);
  text-decoration: none;
  white-space: nowrap;
  border: none;
  background: transparent;
  cursor: pointer;
  position: relative;
  transition: background var(--transition-fast), color var(--transition-fast);
  border-radius: 0;
  font-family: inherit;
}
.m365-tab-link svg { width: 14px; height: 14px; opacity: 0.85; }
.m365-tab-link:hover {
  background: rgba(255, 255, 255, 0.08);
  color: #fff;
}
.m365-tab-link.active {
  color: #fff;
  background: var(--m365-canvas);
}
.m365-tab-link.active {
  color: var(--color-text-strong);
  background: var(--m365-canvas);
  border-top-left-radius: var(--radius-xs);
  border-top-right-radius: var(--radius-xs);
}
.m365-tab-link.active svg { opacity: 1; color: var(--office-blue-600); }
.m365-tab-link.active::after {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: -1px;
  height: 2px;
  background: var(--m365-canvas);
}

/* Tabs container: expand shell grid */
.m365-shell.with-tabs {
  grid-template-rows: var(--m365-app-bar-height) 36px 1fr;
  grid-template-areas:
    "app-bar  app-bar"
    "tabs     tabs"
    "rail     main";
}
.m365-shell.with-tabs .m365-tab-strip { grid-area: tabs; }

/* Shell with both ribbon-tabs and ribbon-band */
.m365-shell.with-ribbon {
  grid-template-rows: var(--m365-app-bar-height) 32px 92px 1fr;
  grid-template-areas:
    "app-bar     app-bar"
    "ribbon-tabs ribbon-tabs"
    "ribbon-band ribbon-band"
    "rail        main";
}
.m365-shell.with-ribbon.ribbon-collapsed {
  grid-template-rows: var(--m365-app-bar-height) 32px 1fr;
  grid-template-areas:
    "app-bar     app-bar"
    "ribbon-tabs ribbon-tabs"
    "rail        main";
}
.m365-shell.with-ribbon.ribbon-collapsed .m365-ribbon-band { display: none; }
.m365-shell.with-ribbon .m365-ribbon-tabs { grid-area: ribbon-tabs; }
.m365-shell.with-ribbon .m365-ribbon-band { grid-area: ribbon-band; }

/* ----- Office Ribbon: tab row (white, dark text, sentence-case) ----- */
.m365-ribbon-tabs {
  background: var(--m365-surface);
  border-bottom: 1px solid var(--m365-divider);
  display: flex;
  align-items: stretch;
  padding: 0 8px;
}
.m365-ribbon-tab {
  display: inline-flex;
  align-items: center;
  padding: 0 14px;
  font-size: var(--text-base);
  font-weight: var(--font-medium);
  color: var(--neutral-grey-90);
  background: transparent;
  border: none;
  cursor: pointer;
  border-bottom: 2px solid transparent;
  font-family: inherit;
  white-space: nowrap;
  transition: color var(--transition-fast), border-color var(--transition-fast), background var(--transition-fast);
}
.m365-ribbon-tab:hover { background: var(--m365-surface-2); }
.m365-ribbon-tab.active {
  /* Match the global ribbon band below — they form one tray */
  background: var(--office-blue-50);
  color: var(--office-blue-700);
  border-bottom-color: var(--office-blue-500);
  font-weight: var(--font-semibold);
}
.m365-ribbon-tabs .spacer { flex: 1; }
.m365-ribbon-collapse {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 0 12px;
  background: transparent;
  border: none;
  color: var(--neutral-grey-50);
  cursor: pointer;
  font-family: inherit;
  font-size: var(--text-sm);
}
.m365-ribbon-collapse:hover { color: var(--neutral-grey-90); }
.m365-ribbon-collapse svg { width: 14px; height: 14px; }

/* ----- Ribbon band: where the commands live ----- */
/* Same pale blue as the active ribbon tab — they share one tray surface. */
.m365-ribbon-band {
  background: var(--office-blue-50);
  border-bottom: 1px solid var(--office-blue-100);
  padding: 6px 0;
  display: flex;
  align-items: stretch;
  gap: 0;
  overflow-x: auto;
  scrollbar-width: thin;
}
.m365-ribbon-band::-webkit-scrollbar { height: 4px; }
.m365-ribbon-band::-webkit-scrollbar-thumb { background: var(--m365-divider); }

.m365-ribbon-group {
  display: flex;
  flex-direction: column;
  align-items: stretch;
  padding: 0 12px;
  border-right: 1px solid var(--m365-divider);
  min-width: fit-content;
}
.m365-ribbon-group:last-child { border-right: none; }
.m365-ribbon-group .body {
  display: flex;
  gap: 4px;
  flex: 1;
  align-items: stretch;
}
.m365-ribbon-group .label {
  font-size: 10px;
  color: var(--neutral-grey-50);
  text-align: center;
  margin-top: 4px;
  padding-top: 3px;
  border-top: 1px solid transparent;
}

/* Large icon button (column: icon over label) */
.ribbon-cmd-lg {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 4px 8px;
  border-radius: var(--radius-xs);
  background: transparent;
  border: none;
  color: var(--neutral-grey-90);
  cursor: pointer;
  text-decoration: none;
  min-width: 56px;
  max-width: 88px;
  text-align: center;
  font-family: inherit;
  transition: background var(--transition-fast);
}
.ribbon-cmd-lg:hover {
  /* Pop above the pale-blue ribbon — solid white card */
  background: var(--m365-surface);
  color: var(--neutral-grey-90);
  box-shadow: 0 0 0 1px var(--office-blue-200);
}
.ribbon-cmd-lg svg { width: 22px; height: 22px; flex-shrink: 0; }
.ribbon-cmd-lg .lbl {
  font-size: 11px;
  line-height: 1.15;
  margin-top: 4px;
  white-space: nowrap;
}
.ribbon-cmd-lg.success svg { color: var(--color-success); }
.ribbon-cmd-lg.danger svg  { color: var(--color-danger); }
.ribbon-cmd-lg.brand svg   { color: var(--color-brand-primary); }
.ribbon-cmd-lg.accent svg  { color: var(--office-blue-600); }

/* Small icon button column (stacked rows of icon+label) */
.ribbon-cmd-col {
  display: flex;
  flex-direction: column;
  gap: 0;
  justify-content: center;
}
.ribbon-cmd-sm {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 3px 8px;
  border-radius: var(--radius-xs);
  background: transparent;
  border: none;
  color: var(--neutral-grey-90);
  font-family: inherit;
  cursor: pointer;
  text-decoration: none;
  font-size: 11px;
  white-space: nowrap;
  transition: background var(--transition-fast);
}
.ribbon-cmd-sm:hover {
  background: var(--m365-surface);
  color: var(--neutral-grey-90);
  box-shadow: 0 0 0 1px var(--office-blue-200);
}
.ribbon-cmd-sm svg { width: 14px; height: 14px; flex-shrink: 0; }
.ribbon-cmd-sm.danger svg { color: var(--color-danger); }
.ribbon-cmd-sm.warning svg { color: var(--color-warning); }
.ribbon-cmd-sm.success svg { color: var(--color-success); }

/* Ribbon breadcrumb row sits below the ribbon band */
.m365-breadcrumb-bar {
  background: var(--m365-surface-2);
  border-bottom: 1px solid var(--m365-divider);
  padding: 6px var(--space-9);
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  display: flex;
  align-items: center;
  gap: 6px;
}
.m365-breadcrumb-bar .current { color: var(--color-text-strong); font-weight: var(--font-medium); }
.m365-breadcrumb-bar svg { width: 12px; height: 12px; }

/* =============================================================
   CUSTOMER HUB — pipeline, per-task progress, sub-nav, dashboard
   ============================================================= */

/* Customer header band */
.hub-header {
  background: var(--m365-surface);
  border-bottom: 1px solid var(--m365-divider);
  padding: var(--space-7) var(--space-9);
  display: flex;
  align-items: center;
  gap: var(--space-7);
}
.hub-avatar {
  width: 48px; height: 48px;
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, var(--mme-navy-600), var(--mme-navy-900));
  color: #fff;
  display: inline-flex; align-items: center; justify-content: center;
  font-size: 20px; font-weight: var(--font-semibold);
  flex-shrink: 0;
}
.hub-name-row { display: flex; align-items: baseline; gap: var(--space-3); flex-wrap: wrap; }
.hub-name { font-size: var(--text-xl); font-weight: var(--font-semibold); color: var(--color-text-strong); letter-spacing: -0.01em; }
.hub-meta { font-size: var(--text-sm); color: var(--color-text-muted); margin-top: 2px; }
.hub-kpis { display: flex; gap: var(--space-7); margin-left: auto; }
.hub-kpi { text-align: right; }
.hub-kpi .num { font-size: var(--text-lg); font-weight: var(--font-semibold); line-height: 1; font-variant-numeric: tabular-nums; }
.hub-kpi .lbl { font-size: 10px; color: var(--color-text-tertiary); text-transform: uppercase; letter-spacing: 0.05em; margin-top: 2px; }
.hub-kpi .num.warning { color: var(--color-warning-fg); }
.hub-kpi .num.danger { color: var(--color-danger-fg); }
.hub-kpi .num.success { color: var(--color-success-fg); }

/* Health chip in header */
.hub-health {
  font-size: var(--text-xs);
  padding: 2px 9px;
  border-radius: var(--radius-full);
  font-weight: var(--font-semibold);
}
.hub-health.healthy { background: var(--color-success-bg); color: var(--color-success-fg); }
.hub-health.watch { background: var(--color-warning-bg); color: var(--color-warning-fg); }
.hub-health.atrisk { background: var(--color-danger-bg); color: var(--color-danger-fg); }

/* Hub body — full width (single column, no left sub-nav).
   Two-tier nav: section tabs + context ribbon replace the old left rail. */
.hub-body { min-height: calc(100vh - 240px); }

/* ----- Horizontal section tabs (under customer header) ----- */
.hub-section-tabs {
  background: var(--m365-surface);
  border-bottom: 1px solid var(--m365-divider);
  display: flex;
  align-items: stretch;
  padding: 0 var(--space-9);
  gap: 0;
  overflow-x: auto;
  scrollbar-width: thin;
}
.hub-section-tabs::-webkit-scrollbar { height: 4px; }
.hub-section-tab {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: 0 var(--space-5);
  height: 40px;
  font-family: inherit;
  font-size: var(--text-base);
  font-weight: var(--font-medium);
  color: var(--color-text-default);
  background: transparent;
  border: none;
  border-bottom: 2px solid transparent;
  cursor: pointer;
  text-decoration: none;
  white-space: nowrap;
  position: relative;
  transition: color var(--transition-fast), border-color var(--transition-fast);
}
.hub-section-tab svg { width: 14px; height: 14px; color: var(--color-text-muted); }
.hub-section-tab:hover { color: var(--color-text-strong); }
.hub-section-tab.active {
  /* Active tab + context ribbon share the same pale blue — they read as one tray */
  background: var(--office-blue-50);
  color: var(--office-blue-700);
  border-bottom-color: var(--office-blue-500);
  font-weight: var(--font-semibold);
}
.hub-section-tab.active svg { color: var(--office-blue-600); }
.hub-section-tab .count {
  font-size: var(--text-xs);
  background: var(--m365-surface-2);
  padding: 1px 7px;
  border-radius: var(--radius-full);
  color: var(--color-text-muted);
  font-weight: var(--font-semibold);
}
.hub-section-tab .count.warn { background: var(--color-warning-bg); color: var(--color-warning-fg); }
.hub-section-tab.active .count {
  background: var(--m365-surface);
  color: var(--office-blue-700);
  border: 1px solid var(--office-blue-200);
}
.hub-section-tab.external::after {
  content: "↗";
  font-size: 10px;
  opacity: 0.5;
  margin-left: 4px;
}

/* ----- Context ribbon (commands for the active section) ----- */
/* Same pale blue as the active section tab — visually one tray. */
.hub-context-ribbon {
  background: var(--office-blue-50);
  border-bottom: 1px solid var(--office-blue-100);
  padding: var(--space-3) var(--space-9);
  display: flex;
  align-items: center;
  gap: var(--space-2);
  flex-wrap: wrap;
}
.hub-context-cmd {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  height: 32px;
  padding: 0 12px;
  background: transparent;
  border: 1px solid transparent;
  border-radius: var(--radius-xs);
  color: var(--neutral-grey-90);
  font-family: inherit;
  font-size: var(--text-base);
  font-weight: var(--font-medium);
  cursor: pointer;
  text-decoration: none;
  white-space: nowrap;
  transition: background var(--transition-fast);
}
.hub-context-cmd svg { width: 14px; height: 14px; flex-shrink: 0; }
.hub-context-cmd:hover {
  /* Pop above the pale-blue ribbon — solid white card */
  background: var(--m365-surface);
  color: var(--neutral-grey-90);
  border-color: var(--office-blue-200);
}
.hub-context-cmd.primary {
  color: var(--office-blue-700);
  font-weight: var(--font-semibold);
}
.hub-context-cmd.primary:hover {
  background: var(--m365-surface);
  border-color: var(--office-blue-500);
}
.hub-context-cmd.danger svg { color: var(--color-danger); }
.hub-context-cmd.success svg { color: var(--color-success); }
.hub-context-ribbon .sep {
  width: 1px;
  height: 20px;
  background: var(--m365-divider);
  margin: 0 var(--space-3);
}
.hub-context-ribbon .spacer { flex: 1; }
.hub-context-ribbon .hint {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
}

/* When context ribbon is empty, hide it (consistent vertical rhythm) */
.hub-context-ribbon:empty { display: none; }

/* Legacy left sub-nav (kept for any straggler templates) */
.hub-subnav {
  background: var(--m365-surface);
  border-right: 1px solid var(--m365-divider);
  padding: var(--space-4) var(--space-2);
  display: flex;
  flex-direction: column;
  gap: 1px;
}
.hub-subnav-section { font-size: 10px; padding: var(--space-3) var(--space-4) var(--space-2); color: var(--color-text-tertiary); text-transform: uppercase; letter-spacing: 0.05em; font-weight: var(--font-semibold); }
.hub-subnav-item {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: 6px var(--space-4);
  border-radius: var(--radius-xs);
  color: var(--color-text-default);
  text-decoration: none;
  font-size: var(--text-base);
  transition: background var(--transition-fast), color var(--transition-fast);
}
.hub-subnav-item:hover { background: var(--m365-surface-2); color: var(--color-text-default); }
.hub-subnav-item.active {
  background: var(--office-blue-50);
  color: var(--office-blue-700);
  font-weight: var(--font-semibold);
}
.hub-subnav-item svg { width: 16px; height: 16px; flex-shrink: 0; color: var(--color-text-muted); }
.hub-subnav-item.active svg { color: var(--office-blue-600); }
.hub-subnav-item .count {
  margin-left: auto;
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  font-variant-numeric: tabular-nums;
}
.hub-subnav-item .count.warn { color: var(--color-warning-fg); font-weight: var(--font-semibold); }

.hub-content { padding: var(--space-7) var(--space-8); background: var(--m365-canvas); min-width: 0; }

/* Dashboard grid: main column + right rail */
.hub-dash {
  display: grid;
  grid-template-columns: minmax(0, 1.7fr) minmax(0, 1fr);
  gap: var(--space-6);
}

/* Panel — card with optional header */
.hub-panel {
  background: var(--m365-surface);
  border: 1px solid var(--m365-divider);
  border-radius: var(--radius-sm);
  margin-bottom: var(--space-5);
}
.hub-panel-head {
  padding: var(--space-4) var(--space-6);
  border-bottom: 1px solid var(--m365-divider);
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-size: var(--text-base);
  font-weight: var(--font-semibold);
}
.hub-panel-head .meta { color: var(--color-text-muted); font-weight: var(--font-normal); font-size: var(--text-xs); }
.hub-panel-head .actions { margin-left: auto; }
.hub-panel-body { padding: var(--space-6); }
.hub-panel.flush .hub-panel-body { padding: 0; }
.hub-panel.alert-brand { background: var(--office-blue-50); border-color: var(--office-blue-200); }
.hub-panel.alert-warn { background: var(--color-warning-bg); border-color: var(--amber-100); }
.hub-panel.alert-danger { background: var(--color-danger-bg); border-color: var(--red-100); }

/* Pipeline funnel */
.pipeline-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 0;
  padding: var(--space-5) 0 var(--space-3);
}
.pipeline-stage {
  padding: 0 var(--space-4);
  position: relative;
  min-width: 0;
}
.pipeline-stage:not(:last-child)::after {
  content: "";
  position: absolute;
  right: -1px;
  top: 6px;
  width: 12px;
  height: 12px;
  border-top: 1.5px solid var(--neutral-grey-22);
  border-right: 1.5px solid var(--neutral-grey-22);
  transform: rotate(45deg);
}
.pipeline-stage .head { display: flex; align-items: baseline; gap: var(--space-2); margin-bottom: var(--space-3); }
.pipeline-stage .count {
  font-size: var(--text-lg);
  font-weight: var(--font-semibold);
  color: var(--color-text-strong);
  font-variant-numeric: tabular-nums;
}
.pipeline-stage .name {
  font-size: var(--text-base);
  font-weight: var(--font-medium);
  color: var(--color-text-default);
}
.pipeline-stage .sub {
  font-size: 10px;
  color: var(--color-text-tertiary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: var(--space-3);
}
.task-chip {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 5px 8px;
  border-radius: 6px;
  font-size: var(--text-xs);
  margin-bottom: 4px;
  cursor: pointer;
  text-decoration: none;
  border: 1px solid transparent;
  transition: border-color var(--transition-fast);
}
.task-chip:hover { border-color: var(--neutral-grey-22); }
.task-chip svg { width: 12px; height: 12px; flex-shrink: 0; }
.task-chip .id { font-family: var(--font-mono); font-size: 10px; opacity: 0.7; margin-left: auto; }
.task-chip.fresh  { background: var(--color-success-bg); color: var(--color-success-fg); }
.task-chip.aging  { background: var(--color-warning-bg); color: var(--color-warning-fg); }
.task-chip.stuck  { background: var(--color-danger-bg); color: var(--color-danger-fg); }

/* Pipeline legend */
.pipeline-legend {
  padding: var(--space-3) var(--space-6);
  border-top: 1px solid var(--m365-divider);
  display: flex;
  gap: var(--space-7);
  font-size: var(--text-xs);
  color: var(--color-text-muted);
}
.pipeline-legend .dot { display: inline-block; width: 9px; height: 9px; border-radius: 50%; vertical-align: -1px; margin-right: 4px; }
.pipeline-legend .dot.fresh { background: var(--color-success); }
.pipeline-legend .dot.aging { background: var(--color-warning); }
.pipeline-legend .dot.stuck { background: var(--color-danger); }

/* Per-task row with progress bar */
.task-row-detail {
  display: grid;
  grid-template-columns: 28px minmax(0, 1.4fr) minmax(180px, 1.6fr) 90px;
  gap: var(--space-5);
  padding: var(--space-4) var(--space-6);
  align-items: center;
  border-bottom: 1px solid var(--m365-divider);
  text-decoration: none;
  color: inherit;
  transition: background var(--transition-fast);
}
.task-row-detail:last-child { border-bottom: none; }
.task-row-detail:hover { background: var(--m365-surface-2); }
.task-row-detail .pri {
  width: 22px; height: 22px;
  border-radius: 50%;
  display: inline-flex; align-items: center; justify-content: center;
}
.task-row-detail .pri.urgent { background: var(--color-danger-bg); }
.task-row-detail .pri.high { background: var(--color-warning-bg); }
.task-row-detail .pri.normal { background: var(--m365-surface-2); }
.task-row-detail .pri svg { width: 12px; height: 12px; }
.task-row-detail .pri.urgent svg { color: var(--color-danger); }
.task-row-detail .pri.high svg { color: var(--color-warning); }
.task-row-detail .pri.normal svg { color: var(--color-text-muted); }
.task-row-detail .title { font-size: var(--text-base); font-weight: var(--font-medium); color: var(--color-text-strong); }
.task-row-detail .meta { font-size: var(--text-xs); color: var(--color-text-muted); margin-top: 2px; }

.task-progress {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 2px;
}
.task-progress .seg {
  height: 6px;
  background: var(--m365-surface-2);
  border-radius: 2px;
}
.task-progress .seg.done { background: var(--color-success); }
.task-progress .seg.now { background: var(--office-blue-500); }
.task-progress .seg.now.aging { background: var(--color-warning); }
.task-progress .seg.now.stuck { background: var(--color-danger); }
.stage-now-label {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  margin-top: 4px;
}
.stage-now-label.stuck { color: var(--color-danger-fg); }
.stage-now-label.aging { color: var(--color-warning-fg); }

/* ----- Mobile: collapse rail to off-canvas (open via waffle) ----- */
@media (max-width: 768px) {
  .m365-shell {
    grid-template-columns: 0 1fr;
  }
  .m365-rail { display: none; }
  .m365-shell.rail-open .m365-rail {
    display: flex;
    position: fixed;
    top: var(--m365-app-bar-height);
    left: 0;
    bottom: 0;
    width: var(--m365-rail-width-expanded);
    z-index: 100;
    box-shadow: var(--fluent-shadow-16);
  }
  .m365-app-bar-search { display: none; }
  .m365-page-header, .m365-content, .m365-command-bar { padding-left: var(--space-7); padding-right: var(--space-7); }
  .m365-tab-strip { padding: 0 var(--space-3); }
  .m365-tab-link { padding: 0 var(--space-4); font-size: var(--text-sm); }
}