/* ============================================================================
   Email Senders page — signature modal + re-check button (SGM-436)
   ----------------------------------------------------------------------------
   Modal pattern mirrors the campaign-wizard modal conventions. All colors
   come from brand tokens defined in app.css :root — zero raw hex.
   Design Analysis + Token Map: ~/.claude/plans/safegtm/2026-05-14-email-signature-per-sender.md v2.
   ============================================================================ */

/* Modal backdrop */
.esnd-modal-backdrop {
  position: fixed;
  inset: 0;
  background: var(--bg-overlay);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 32px;
  z-index: 1000;
}

/* Modal frame */
.esnd-modal {
  background: var(--bg-card);
  border-radius: var(--radius-lg);
  width: 100%;
  max-width: 640px;
  max-height: 92%;
  box-shadow: var(--shadow-xl);
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

/* Header */
.esnd-modal-h {
  padding: 18px 22px;
  border-bottom: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.esnd-modal-close {
  background: none;
  border: none;
  cursor: pointer;
  color: var(--text-muted);
  font-size: 22px;
  line-height: 1;
  padding: 4px 8px;
  border-radius: var(--radius);
  transition: background var(--transition);
}

.esnd-modal-close:hover {
  background: var(--bg-card-hover);
}

/* Tabs */
.esnd-modal-tabs {
  display: flex;
  padding: 0 22px;
  gap: 4px;
  border-bottom: 1px solid var(--border);
}

.esnd-modal-tab {
  padding: 10px 16px;
  font-size: 12px;
  font-weight: 600;
  color: var(--text-muted);
  border: none;
  background: transparent;
  cursor: pointer;
  font-family: inherit;
  border-bottom: 2px solid transparent;
  margin-bottom: -1px;
  transition: color var(--transition);
}

.esnd-modal-tab:hover {
  color: var(--text-secondary);
}

.esnd-modal-tab--active {
  color: var(--primary);
  border-bottom-color: var(--primary);
}

/* Body */
.esnd-modal-body {
  padding: 22px;
  overflow: auto;
  max-height: 60vh;
}

/* Rich-text toolbar */
.esnd-editor-toolbar {
  display: flex;
  gap: 4px;
  padding: 6px;
  background: var(--bg-code);
  border: 1px solid var(--border);
  border-radius: var(--radius) var(--radius) 0 0;
  border-bottom: none;
}

.esnd-tb-btn {
  padding: 4px 8px;
  background: transparent;
  border: none;
  border-radius: 4px;
  cursor: pointer;
  font-family: inherit;
  font-size: 13px;
  color: var(--text-secondary);
  font-weight: 600;
  min-width: 28px;
  transition: background var(--transition);
}

.esnd-tb-btn:hover {
  background: var(--bg-card);
}

.esnd-tb-sep {
  width: 1px;
  background: var(--border);
  margin: 2px 4px;
}

/* Contenteditable canvas */
.esnd-editor-canvas {
  border: 1px solid var(--border);
  border-radius: 0 0 var(--radius) var(--radius);
  padding: 14px 16px;
  min-height: 180px;
  background: var(--bg-input);
  font-size: 13px;
  color: var(--text);
  line-height: 1.55;
  outline: none;
  font-family: 'Montserrat', system-ui, sans-serif;
}

.esnd-editor-canvas:focus {
  border-color: var(--border-focus);
  box-shadow: 0 0 0 3px var(--primary-bg);
}

/* Preview pane */
.esnd-preview {
  margin-top: 16px;
  padding: 14px 16px;
  background: var(--bg);
  border-radius: var(--radius);
  border: 1px solid var(--border);
}

.esnd-preview-h {
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 8px;
}

.esnd-preview-body {
  background: var(--bg-card);
  padding: 14px 18px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  font-size: 13px;
}

/* Plain-text editor */
.esnd-text-area {
  width: 100%;
  min-height: 200px;
  padding: 12px 14px;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-family: ui-monospace, 'SF Mono', 'Fira Code', monospace;
  font-size: 12px;
  line-height: 1.55;
  color: var(--text);
  resize: vertical;
  outline: none;
}

.esnd-text-area:focus {
  border-color: var(--border-focus);
  box-shadow: 0 0 0 3px var(--primary-bg);
}

/* Footer */
.esnd-modal-f {
  padding: 14px 22px;
  border-top: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  background: var(--bg-code);
}

/* Tiny spinner for in-button loading states (Re-check, Save) */
.esnd-spinner-sm {
  display: inline-block;
  width: 12px;
  height: 12px;
  border: 2px solid var(--border);
  border-top-color: var(--primary);
  border-radius: 50%;
  animation: esnd-spin 0.7s linear infinite;
  vertical-align: middle;
  margin-right: 6px;
}

@keyframes esnd-spin {
  to { transform: rotate(360deg); }
}