/* Maestro email layer (US-054) — 2-pane reading shell + rich-text composer.
   Kept ≤200 LOC; uses the same CSS custom properties as styles.css. */

.email-shell {
  display: grid;
  grid-template-columns: 340px 1fr;
  gap: 12px;
  height: calc(100vh - 150px);
  border: 1px solid var(--border);
  background: var(--bg-surface);
}

.email-left-pane {
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.email-pane-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  padding: 10px 12px;
  border-bottom: 1px solid var(--border);
}
.email-folder-name {
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 2px;
  color: var(--text-muted);
}

.email-list { flex: 1; overflow-y: auto; }
.email-list-ul { list-style: none; padding: 0; margin: 0; }
.email-loading, .email-empty-state, .email-error {
  padding: 24px 16px;
  color: var(--text-muted);
  font-size: 0.9rem;
  text-align: center;
}
.email-error { color: var(--error); }

.email-row {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 2px 8px;
  padding: 10px 14px;
  border-bottom: 1px solid var(--border);
  cursor: pointer;
  transition: background .1s;
}
.email-row:hover { background: var(--bg-card); }
.email-row.active { background: var(--bg-card-hover); border-left: 3px solid var(--maestro); padding-left: 11px; }
.email-row-from {
  font-weight: 600;
  color: var(--text-primary);
  font-size: 0.85rem;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.email-row-subject {
  color: var(--text-secondary);
  font-size: 0.82rem;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.email-row-snippet {
  color: var(--text-muted);
  font-size: 0.78rem;
  grid-column: 1 / -1;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.email-row-age {
  font-size: 0.72rem;
  color: var(--text-muted);
  white-space: nowrap;
  align-self: start;
}
.email-sched-badge { font-size: 0.85rem; margin-left: 4px; }

.email-reading-pane {
  overflow-y: auto;
  padding: 18px 20px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.email-reading-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--border);
}
.email-reading-subject { font-size: 1.4rem; margin: 0; }
.email-reading-from { font-size: 0.85rem; color: var(--text-secondary); }
.email-body-render {
  padding-top: 8px;
  line-height: 1.6;
  color: var(--text-primary);
  word-break: break-word;
}
.email-body-render img { max-width: 100%; height: auto; }
.email-body-render a { color: var(--maestro-bright); text-decoration: underline; }

/* --- composer --- */

.email-composer {
  display: flex;
  flex-direction: column;
  gap: 8px;
  height: 100%;
  min-height: 360px;
}
.composer-fields { display: flex; flex-direction: column; gap: 6px; }
.composer-field { display: flex; align-items: center; gap: 8px; }
.composer-field > span {
  width: 56px;
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--text-muted);
}
.composer-field input {
  flex: 1;
  background: var(--bg-card);
  border: 1px solid var(--border);
  padding: 8px 10px;
  color: var(--text-primary);
  font-family: inherit;
  font-size: 0.9rem;
}
.composer-field input:focus { outline: none; border-color: var(--maestro); }
.composer-field-collapse summary {
  font-size: 0.75rem;
  color: var(--text-muted);
  cursor: pointer;
  padding: 4px 0;
}

.composer-toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  padding: 6px 4px;
  border: 1px solid var(--border);
  background: var(--bg-card);
}
.composer-toolbar button,
.composer-toolbar select,
.composer-toolbar input[type="color"] {
  background: var(--bg-surface);
  border: 1px solid var(--border);
  color: var(--text-primary);
  font-family: inherit;
  font-size: 0.85rem;
  padding: 4px 8px;
  min-width: 30px;
  cursor: pointer;
}
.composer-toolbar input[type="color"] { padding: 2px; height: 28px; min-width: 32px; }
.composer-toolbar button:hover { background: var(--bg-card-hover); }
.composer-toolbar button.active { background: var(--maestro); color: white; border-color: var(--maestro); }

.email-body-edit {
  flex: 1;
  min-height: 200px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  padding: 12px;
  color: var(--text-primary);
  font-family: inherit;
  font-size: 0.95rem;
  line-height: 1.6;
  overflow-y: auto;
  word-break: break-word;
}
.email-body-edit:focus { outline: none; border-color: var(--maestro); }
.email-body-edit ul, .email-body-edit ol { padding-left: 24px; }

.composer-actions {
  display: flex;
  gap: 10px;
  justify-content: flex-end;
  padding-top: 8px;
  border-top: 1px solid var(--border);
}

@media (max-width: 768px) {
  .email-shell { grid-template-columns: 1fr; height: auto; }
  .email-left-pane { max-height: 50vh; border-right: none; border-bottom: 1px solid var(--border); }
}

/* US-EM2 — 3-pane shell + multi-select checkboxes + bulk-action toolbar. */
.email-shell-3pane {
  grid-template-columns: 180px 340px 1fr;
}
.email-folders {
  display: flex;
  flex-direction: column;
  border-right: 1px solid var(--border);
  padding: 12px 6px;
  gap: 2px;
  overflow-y: auto;
}
.email-folder-link {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 12px;
  border-radius: 6px;
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.92rem;
}
.email-folder-link:hover { background: var(--bg-card); color: var(--text-primary); }
.email-folder-link.active {
  background: var(--bg-card-hover);
  color: var(--text-primary);
  border-left: 3px solid var(--maestro);
  padding-left: 9px;
}
.email-folder-ico { font-size: 1.1rem; }
.email-folder-label { flex: 1; }

/* Row now has [check][body][age] — adjust the grid. */
.email-row { grid-template-columns: 18px 1fr auto; align-items: start; }
.email-row-check { display: flex; align-items: center; padding-top: 2px; cursor: pointer; }
.email-row-check input { cursor: pointer; }
.email-row-body { display: contents; }
.email-row-body .email-row-from,
.email-row-body .email-row-subject { grid-column: 2; }
.email-row-body .email-row-snippet { grid-column: 1 / -1; padding-left: 26px; }

/* Select-all in the header */
.email-select-all-wrap { display: flex; align-items: center; cursor: pointer; padding-right: 6px; }
.email-select-all-wrap input { cursor: pointer; }

/* Bulk action bar (appears when N>0 selected) */
.email-bulk-bar {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 12px;
  border-bottom: 1px solid var(--border);
  background: var(--bg-card);
}
.email-bulk-count { font-size: 0.82rem; color: var(--text-muted); margin-right: auto; }

@media (max-width: 1000px) {
  .email-shell-3pane { grid-template-columns: 1fr; }
  .email-folders { flex-direction: row; flex-wrap: wrap; border-right: none; border-bottom: 1px solid var(--border); }
  .email-folder-link.active { border-left: none; border-bottom: 3px solid var(--maestro); padding-left: 12px; }
}

/* US-EM3 — proper mobile (phone) shell:
   - Folder nav becomes a slide-in drawer triggered by ☰
   - Tap a message → reading pane covers the list; ← in the header returns
   - Bigger touch targets (≥44px)
   - Composer is full-bleed within the shell so the keyboard doesn't crush it
*/
.email-hamburger {
  display: none;
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text-secondary);
  font-size: 1.05rem;
  padding: 4px 10px;
  border-radius: 6px;
  cursor: pointer;
}
.email-hamburger:hover { background: var(--bg-card); }
.email-back { display: none; }

/* Tablet (≤1000px): keep the 1-col stack we already had */
@media (max-width: 1000px) {
  .email-shell-3pane { grid-template-columns: 1fr; height: auto; }
  .email-folders { flex-direction: row; flex-wrap: wrap; border-right: none; border-bottom: 1px solid var(--border); }
  .email-folder-link.active { border-left: none; border-bottom: 3px solid var(--maestro); padding-left: 12px; }
}

/* Phone (≤768px): folder drawer + list/reading swap */
@media (max-width: 768px) {
  .email-shell-3pane {
    grid-template-columns: 1fr;
    height: calc(100vh - 96px);
    position: relative;
    overflow: hidden;
  }
  .email-hamburger { display: inline-flex; align-items: center; min-width: 44px; min-height: 36px; }
  .email-back { display: inline-flex; align-items: center; min-width: 44px; min-height: 36px; margin-right: auto; }
  .email-reading-actions { flex-wrap: wrap; gap: 6px; }

  /* Folder nav: hidden off-canvas; .folders-open on shell slides it in */
  .email-folders {
    position: absolute;
    top: 0; left: 0; bottom: 0;
    width: 240px;
    background: var(--bg-surface);
    border-right: 1px solid var(--border);
    border-bottom: none;
    flex-direction: column;
    z-index: 10;
    transform: translateX(-100%);
    transition: transform 0.18s ease;
    box-shadow: 4px 0 12px rgba(0,0,0,0.3);
  }
  .email-shell-3pane.folders-open .email-folders { transform: translateX(0); }
  .email-folder-link {
    padding: 12px 14px;
    font-size: 1rem;
    border-left: none;
  }
  .email-folder-link.active { border-left: 3px solid var(--maestro); border-bottom: none; padding-left: 11px; }

  /* Reading pane covers the list when a message is active */
  .email-left-pane, .email-reading-pane {
    grid-column: 1;
    grid-row: 1;
    overflow-y: auto;
  }
  .email-reading-pane {
    transform: translateX(100%);
    transition: transform 0.18s ease;
    background: var(--bg-surface);
    z-index: 5;
  }
  .email-shell-3pane.reading-active .email-reading-pane { transform: translateX(0); }
  .email-shell-3pane.reading-active .email-left-pane { transform: translateX(-30%); opacity: 0.4; }
  .email-left-pane { transition: transform 0.18s ease, opacity 0.18s ease; }

  /* Bigger row touch targets + show snippet on phone */
  .email-row { padding: 14px 16px; min-height: 56px; }
  .email-row-from { font-size: 0.95rem; }
  .email-row-subject { font-size: 0.9rem; }
  .email-row-check input { width: 20px; height: 20px; }
  .email-select-all-wrap input { width: 20px; height: 20px; }
  .email-pane-head { padding: 10px 12px; gap: 10px; }
  .email-folder-name { display: none; }    /* folder name lives in the drawer's active link */

  /* Bulk bar: sticky at bottom on phone, thumb-reachable */
  .email-bulk-bar {
    position: sticky;
    bottom: 0;
    z-index: 6;
    border-top: 1px solid var(--border);
    border-bottom: none;
    padding: 10px 12px;
  }
  .email-bulk-bar .btn { min-height: 38px; padding: 6px 14px; }

  /* Composer: full-bleed within the reading pane */
  .email-composer { padding: 12px; }
  .composer-toolbar { flex-wrap: wrap; gap: 4px; }
  .composer-toolbar button { min-height: 36px; min-width: 36px; }
}