.mc-hero {
  background:
    radial-gradient(circle at top right, rgba(27, 112, 139, 0.16), transparent 42%),
    linear-gradient(180deg, rgba(27, 112, 139, 0.04), rgba(27, 112, 139, 0.00));
  border-bottom: 1px solid var(--border-color);
}

.mc-hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 10px;
  padding: 6px 12px;
  border-radius: 999px;
  background: rgba(27, 112, 139, 0.12);
  color: var(--color-primary);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.mc-layout {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 24px;
  align-items: start;
}

.mc-sidebar {
  position: sticky;
  top: 96px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 16px;
}

.mc-mailbox-btn {
  display: block;
  width: 100%;
  padding: 12px 14px;
  border: 1px solid rgba(27, 112, 139, 0.14);
  border-radius: 14px;
  background: rgba(27, 112, 139, 0.03);
  text-align: left;
  font-family: var(--font-body);
  font-weight: 600;
  color: var(--text-secondary);
  cursor: pointer;
  transition: background 0.18s, color 0.18s, border-color 0.18s;
}

.mc-mailbox-btn:hover {
  background: rgba(27, 112, 139, 0.08);
  color: var(--text-primary);
}

.mc-mailbox-btn.active {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: #fff;
}

.mc-mailbox-tabs {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
  margin-bottom: 6px;
}

.mc-sidebar-divider {
  height: 1px;
  background: var(--border-color);
  margin: 16px 0;
}

.mc-toggle-card {
  display: grid;
  grid-template-columns: 18px 1fr;
  gap: 10px;
  align-items: start;
  padding: 12px 14px;
  border: 1px solid var(--border-color);
  border-radius: 12px;
  background: #fff;
  margin-bottom: 10px;
  cursor: pointer;
}

.mc-toggle-card input {
  margin-top: 3px;
}

.mc-toggle-card strong {
  display: block;
  color: var(--text-primary);
  font-size: 0.9rem;
}

.mc-toggle-card small {
  display: block;
  margin-top: 4px;
  color: var(--text-secondary);
  line-height: 1.45;
}

.mc-rule-card {
  padding: 12px 14px;
  border: 1px solid var(--border-color);
  border-radius: 12px;
  background: linear-gradient(180deg, rgba(27, 112, 139, 0.05), rgba(27, 112, 139, 0.01));
  margin-bottom: 10px;
}

.mc-rule-title {
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 4px;
}

.mc-rule-text {
  color: var(--text-secondary);
  line-height: 1.5;
  font-size: 0.88rem;
}

.mc-content {
  min-width: 0;
}

.mc-panel-header {
  margin-bottom: 18px;
}

.mc-toolbar {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  align-items: center;
  flex-wrap: wrap;
  margin-bottom: 18px;
}

.mc-toolbar-left,
.mc-toolbar-right {
  display: flex;
  gap: 10px;
  align-items: center;
  flex-wrap: wrap;
}

.mc-status-pill {
  display: inline-flex;
  align-items: center;
  padding: 7px 11px;
  border-radius: 999px;
  background: rgba(27, 112, 139, 0.12);
  color: var(--color-primary);
  font-size: 0.78rem;
  font-weight: 700;
}

.mc-status-pill--muted {
  background: rgba(148, 163, 184, 0.16);
  color: var(--text-secondary);
}

.mc-search {
  min-width: 280px;
  padding: 10px 12px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  background: var(--bg-card);
  color: var(--text-primary);
  font-family: var(--font-body);
}

.mc-grid {
  display: grid;
  grid-template-columns: minmax(280px, 0.92fr) minmax(560px, 1.58fr);
  gap: 18px;
  align-items: start;
}

.mc-preview-stack {
  display: grid;
  gap: 18px;
  min-width: 0;
}

.mc-pane {
  min-width: 0;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  background: #fff;
  color: #0f172a;
  overflow: hidden;
  box-shadow: 0 12px 30px rgba(15, 23, 42, 0.04);
}

.mc-pane-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  padding: 16px 18px;
  border-bottom: 1px solid var(--border-color);
}

.mc-thread-header-tools {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.mc-pane-header h3 {
  margin: 0;
  font-size: 1rem;
  font-weight: 700;
  color: #0f172a;
}

.mc-list-state {
  font-size: 0.8rem;
  color: #475569;
}

.mc-thread-list {
  max-height: 80vh;
  overflow: auto;
}

.mc-thread-item {
  padding: 16px 18px;
  border-bottom: 1px solid var(--border-color);
  cursor: pointer;
  transition: background 0.15s, border-color 0.15s;
}

.mc-thread-item:hover {
  background: rgba(27, 112, 139, 0.04);
}

.mc-thread-item.active {
  background: rgba(27, 112, 139, 0.08);
  border-left: 4px solid var(--color-primary);
  padding-left: 14px;
}

.mc-thread-item-top {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  align-items: flex-start;
  margin-bottom: 8px;
}

.mc-thread-from {
  font-weight: 700;
  color: #0f172a;
}

.mc-thread-date {
  font-size: 0.78rem;
  color: #64748b;
  white-space: nowrap;
}

.mc-thread-subject {
  font-size: 0.95rem;
  font-weight: 700;
  color: #0f172a;
  margin-bottom: 6px;
}

.mc-thread-snippet {
  color: #475569;
  line-height: 1.55;
  font-size: 0.88rem;
}

.mc-thread-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 10px;
}

.mc-badge {
  display: inline-flex;
  align-items: center;
  padding: 4px 8px;
  border-radius: 999px;
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

.mc-badge-unread {
  background: rgba(37, 99, 235, 0.14);
  color: #1d4ed8;
}

.mc-badge-attach {
  background: rgba(245, 158, 11, 0.16);
  color: #92400e;
}

.mc-badge-priority-high {
  background: rgba(220, 38, 38, 0.14);
  color: #991b1b;
}

.mc-badge-priority-normal {
  background: rgba(27, 112, 139, 0.14);
  color: var(--color-primary);
}

.mc-badge-priority-low {
  background: rgba(148, 163, 184, 0.18);
  color: var(--text-secondary);
}

.mc-thread-detail,
.mc-compose-shell {
  padding: 18px;
}

.mc-thread-pane {
  min-height: 48vh;
}

.mc-thread-pane.is-active {
  border-color: rgba(27, 112, 139, 0.32);
  box-shadow: 0 16px 34px rgba(27, 112, 139, 0.08);
}

.mc-thread-loading {
  margin-top: 10px;
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--color-primary);
}

.mc-compose-pane {
  min-height: 34vh;
}

.mc-thread-detail {
  min-height: 36vh;
  max-height: 54vh;
  overflow: auto;
  color: #0f172a;
}

.mc-empty-state {
  padding: 24px;
  border: 1px dashed var(--border-color);
  border-radius: 16px;
  color: #475569;
  background: rgba(148, 163, 184, 0.07);
  line-height: 1.6;
}

.mc-thread-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 14px;
}

.mc-thread-title {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-size: 1.3rem;
  color: #0f172a;
}

.mc-thread-submeta {
  color: #64748b;
  font-size: 0.88rem;
  line-height: 1.6;
}

.mc-thread-preview-card {
  margin-top: 14px;
  padding: 14px;
  border-radius: 14px;
  border: 1px solid rgba(27, 112, 139, 0.14);
  background: rgba(27, 112, 139, 0.04);
}

.mc-thread-preview-text {
  color: var(--text-primary);
  line-height: 1.6;
  margin-top: 8px;
  white-space: pre-wrap;
}

.mc-thread-message {
  border: 1px solid var(--border-color);
  border-radius: 16px;
  padding: 14px;
  margin-top: 14px;
  background: #f8fafc;
}

.mc-msg-head {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  align-items: flex-start;
  margin-bottom: 10px;
}

.mc-msg-from {
  font-weight: 700;
  color: #0f172a;
}

.mc-msg-date {
  font-size: 0.78rem;
  color: #64748b;
}

.mc-msg-body {
  white-space: pre-wrap;
  color: #0f172a;
  line-height: 1.65;
  font-size: 0.92rem;
}

.mc-attachments {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 10px;
}

.mc-attachment-card {
  margin: 0;
  padding: 12px;
  border: 1px solid rgba(27, 112, 139, 0.14);
  border-radius: 14px;
  background: #fff;
  display: grid;
  gap: 10px;
  min-width: 220px;
  max-width: 100%;
}

.mc-attachment-preview {
  max-width: 100%;
  border-radius: 10px;
  overflow: hidden;
  background: #f8fafc;
  border: 1px solid rgba(148, 163, 184, 0.22);
}

.mc-attachment-preview-image {
  display: block;
  max-width: 100%;
  height: auto;
}

.mc-attachment-preview-frame {
  display: block;
  width: 100%;
  min-height: 240px;
  border: 0;
  background: #fff;
}

.mc-attachment-caption {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
}

.mc-attachment-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 7px 10px;
  border-radius: 999px;
  border: 1px solid rgba(27, 112, 139, 0.16);
  background: rgba(27, 112, 139, 0.06);
  color: var(--color-primary);
  text-decoration: none;
  font-size: 0.8rem;
  font-weight: 600;
}

.mc-summary-card {
  padding: 14px;
  border-radius: 16px;
  border: 1px solid rgba(27, 112, 139, 0.16);
  background: linear-gradient(180deg, rgba(27, 112, 139, 0.07), rgba(255, 255, 255, 0.96));
  margin-bottom: 14px;
  color: #0f172a;
}

.mc-summary-title {
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-primary);
  margin-bottom: 8px;
}

.mc-summary-text {
  color: #0f172a;
  line-height: 1.6;
  margin-bottom: 10px;
}

.mc-summary-list {
  margin: 0;
  padding-left: 18px;
  color: #475569;
  line-height: 1.6;
}

.mc-compose-fields {
  display: grid;
  gap: 12px;
}

.mc-compose-fields label {
  display: grid;
  gap: 6px;
  font-size: 0.82rem;
  font-weight: 700;
  color: #0f172a;
}

.mc-input,
.mc-textarea {
  width: 100%;
  box-sizing: border-box;
  border: 1px solid #cbd5e1;
  border-radius: 12px;
  background: #fff;
  color: #0f172a;
  padding: 11px 12px;
  font-family: var(--font-body);
}

.mc-textarea {
  min-height: 260px;
  resize: vertical;
  line-height: 1.6;
}

.mc-actions {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-top: 14px;
}

.mc-compose-note {
  margin-top: 10px;
  font-size: 0.84rem;
  color: #475569;
  line-height: 1.55;
}

.mc-thread-preview-card {
  background: #f8fafc;
}

.mc-thread-preview-text {
  color: #0f172a;
}

@media (max-width: 1240px) {
  .mc-grid {
    grid-template-columns: 1fr;
  }

  .mc-preview-stack {
    grid-template-columns: 1fr;
  }

  .mc-thread-list {
    max-height: none;
  }
}

@media (max-width: 900px) {
  .mc-layout {
    grid-template-columns: 1fr;
  }

  .mc-sidebar {
    position: static;
  }

  .mc-search {
    min-width: 0;
    width: 100%;
  }
}