/* =============================================
   RINQ-Mail – Global Styles
   ============================================= */

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --c-bg:         #f5f5f5;
  --c-surface:    #ffffff;
  --c-sidebar:    #e9eaed;
  --c-sidebar-t:  #4b4b58;
  --c-sidebar-h:  rgba(0,0,0,.05);
  --c-sidebar-a:  rgba(79,126,248,.14);
  --c-sidebar-fg:      #202028;
  --c-sidebar-fg-dim:  rgba(0,0,0,.45);
  --c-sidebar-overlay:        rgba(0,0,0,.05);
  --c-sidebar-overlay-hover:  rgba(0,0,0,.09);
  --c-sidebar-overlay-border: rgba(0,0,0,.12);
  --c-primary:    #4f7ef8;
  --c-primary-d:  #3a63d4;
  --c-danger:     #e5534b;
  --c-success:    #3fb950;
  --c-warn:       #d29922;
  --c-border:     #e0e0e0;
  --c-text:       #1a1a2e;
  --c-text-sub:   #666;
  --c-unread-bg:  #eef3ff;
  --c-unread-dot: #4f7ef8;
  --c-hover:      #f0f4ff;
  --c-selected:   #dce8fd;
  --radius:       6px;
  --shadow:       0 2px 8px rgba(0,0,0,.08);
  --hdr-h:        52px;
  --sidebar-w:    220px;
  --list-w:       380px;
  --font:         -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --c-toast-bg:      #1a1a2e;
  --c-skeleton-a:    #eee;
  --c-skeleton-b:    #f5f5f5;
  --c-badge-ok-bg:      #d4f4dd; --c-badge-ok-t:      #1a7a35;
  --c-badge-error-bg:   #fde8e8; --c-badge-error-t:   #c0392b;
  --c-badge-unknown-bg: #f0f0f0; --c-badge-unknown-t: #666;
  --c-badge-pending-bg: #fff3cd; --c-badge-pending-t: #856404;
  color-scheme: light;
}

:root[data-theme="dark"] {
  --c-bg:         #14141f;
  --c-surface:    #1e1e2e;
  --c-sidebar:    #27272f;
  --c-sidebar-t:  #c9d1d9;
  --c-sidebar-h:  rgba(255,255,255,.08);
  --c-sidebar-a:  rgba(255,255,255,.14);
  --c-sidebar-fg:      #ffffff;
  --c-sidebar-fg-dim:  rgba(255,255,255,.5);
  --c-sidebar-overlay:        rgba(255,255,255,.1);
  --c-sidebar-overlay-hover:  rgba(255,255,255,.18);
  --c-sidebar-overlay-border: rgba(255,255,255,.2);
  --c-border:     #34344a;
  --c-text:       #e4e6eb;
  --c-text-sub:   #9a9ab0;
  --c-unread-bg:  #202844;
  --c-unread-dot: #6c93ff;
  --c-hover:      #262a42;
  --c-selected:   #2c3a5e;
  --shadow:       0 2px 10px rgba(0,0,0,.4);
  --c-toast-bg:      #2a2a40;
  --c-skeleton-a:    #24243a;
  --c-skeleton-b:    #2c2c46;
  --c-badge-ok-bg:      #1c3b28; --c-badge-ok-t:      #6fd88f;
  --c-badge-error-bg:   #3d2222; --c-badge-error-t:   #f0938c;
  --c-badge-unknown-bg: #2a2a3a; --c-badge-unknown-t: #aaaabf;
  --c-badge-pending-bg: #3a331a; --c-badge-pending-t: #e0c064;
  color-scheme: dark;
}

html, body { height: 100%; overflow: hidden; }
body       { font-family: var(--font); font-size: 14px; color: var(--c-text); background: var(--c-bg); }

a { color: var(--c-primary); text-decoration: none; }
a:hover { text-decoration: underline; }

button {
  cursor: pointer;
  border: none;
  background: none;
  font-family: inherit;
  font-size: 14px;
  border-radius: var(--radius);
  padding: 7px 16px;
  transition: background .15s, opacity .15s;
}
button:disabled { opacity: .5; cursor: not-allowed; }

.btn-primary  { background: var(--c-primary); color: #fff; }
.btn-primary:hover:not(:disabled) { background: var(--c-primary-d); }
.btn-danger   { background: var(--c-danger); color: #fff; }
.btn-ghost    { border: 1px solid var(--c-border); background: var(--c-surface); color: var(--c-text); }
.btn-ghost:hover:not(:disabled) { background: var(--c-hover); }
.btn-sm { padding: 4px 10px; font-size: 12px; }

input, textarea, select {
  font-family: inherit;
  font-size: 14px;
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  padding: 7px 10px;
  outline: none;
  transition: border-color .15s;
  background: var(--c-surface);
  color: var(--c-text);
  width: 100%;
}
input:focus, textarea:focus, select:focus { border-color: var(--c-primary); }

label { display: block; font-weight: 500; margin-bottom: 4px; font-size: 13px; }
.form-row { margin-bottom: 14px; }
.form-row-inline { display: flex; gap: 10px; }
.form-row-inline > * { flex: 1; }

/* ── Layout ── */
#app { display: flex; flex-direction: column; height: 100vh; }

/* ── Header ── */
.header {
  height: var(--hdr-h);
  background: var(--c-sidebar);
  border-bottom: 1px solid var(--c-sidebar-overlay-border);
  display: flex;
  align-items: center;
  padding: 0 16px;
  gap: 12px;
  flex-shrink: 0;
  z-index: 100;
}
.header-logo {
  color: var(--c-sidebar-fg);
  font-size: 18px;
  font-weight: 700;
  letter-spacing: -0.5px;
  white-space: nowrap;
}
.header-logo span { color: var(--c-primary); }

.header-account-select {
  background: var(--c-sidebar-overlay);
  border: 1px solid var(--c-sidebar-overlay-border);
  color: var(--c-sidebar-fg);
  border-radius: var(--radius);
  padding: 5px 8px;
  font-size: 13px;
  max-width: 200px;
}
.header-account-select option { background: var(--c-surface); color: var(--c-text); }

.header-search {
  flex: 1;
  max-width: 400px;
  display: flex;
  gap: 6px;
}
.header-search input {
  background: var(--c-sidebar-overlay);
  border-color: var(--c-sidebar-overlay-border);
  color: var(--c-sidebar-fg);
  border-radius: 20px;
  padding: 5px 14px;
}
.header-search input::placeholder { color: var(--c-sidebar-fg-dim); }
.header-search input:focus { border-color: var(--c-primary); background: var(--c-sidebar-overlay-hover); }
.header-search button {
  background: var(--c-primary);
  color: #fff;
  padding: 5px 12px;
  font-size: 13px;
}

.header-spacer { flex: 1; }

.header-menu { position: relative; }
.header-menu-btn {
  background: var(--c-sidebar-overlay);
  color: var(--c-sidebar-fg);
  border-radius: 50%;
  width: 34px; height: 34px;
  display: flex; align-items: center; justify-content: center;
  font-size: 16px;
}
.header-menu-btn:hover { background: var(--c-sidebar-overlay-hover); }
.mobile-menu-btn { display: none; flex-shrink: 0; }

.dropdown {
  position: absolute;
  right: 0; top: calc(100% + 8px);
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  min-width: 160px;
  z-index: 200;
  display: none;
}
.dropdown.open { display: block; }
.dropdown-item {
  display: block;
  padding: 9px 14px;
  color: var(--c-text);
  font-size: 13px;
  cursor: pointer;
  white-space: nowrap;
}
.dropdown-item:hover { background: var(--c-hover); }
.dropdown-sep { border-top: 1px solid var(--c-border); margin: 4px 0; }

/* ── Main Body ── */
.main-body {
  display: flex;
  flex: 1;
  overflow: hidden;
}

/* ── Sidebar (folder pane) ── */
.sidebar {
  width: var(--sidebar-w);
  background: var(--c-sidebar);
  border-right: 1px solid var(--c-sidebar-overlay-border);
  display: flex;
  flex-direction: column;
  overflow-y: auto;
  flex-shrink: 0;
}

.sidebar-compose {
  margin: 12px;
}
.sidebar-compose button {
  width: 100%;
  background: var(--c-primary);
  color: #fff;
  font-weight: 600;
  padding: 9px;
}

.folder-list { list-style: none; padding: 0 8px; }
.folder-item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 7px 10px;
  border-radius: var(--radius);
  color: var(--c-sidebar-t);
  cursor: pointer;
  font-size: 13px;
  transition: background .12s;
  user-select: none;
}
.folder-item:hover    { background: var(--c-sidebar-h); }
.folder-item.active   { background: var(--c-sidebar-a); color: var(--c-sidebar-fg); }
.folder-icon          { width: 16px; text-align: center; font-style: normal; }
.folder-autofilter-badge { font-size: 11px; font-style: normal; opacity: .8; margin-left: -4px; }
.folder-name          { flex: 1; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.folder-badge {
  background: var(--c-primary);
  color: #fff;
  font-size: 11px;
  min-width: 18px;
  height: 18px;
  border-radius: 9px;
  display: flex; align-items: center; justify-content: center;
  padding: 0 5px;
}

.sidebar-footer {
  margin-top: auto;
  padding: 12px;
}
.sidebar-footer a {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--c-sidebar-t);
  font-size: 13px;
  padding: 7px 10px;
  border-radius: var(--radius);
}
.sidebar-footer a:hover { background: var(--c-sidebar-h); text-decoration: none; }

/* ── Mail List Pane ── */
.mail-list-pane {
  width: var(--list-w);
  border-right: 1px solid var(--c-border);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  background: var(--c-surface);
  flex-shrink: 0;
}
.mail-list-header {
  padding: 10px 14px;
  border-bottom: 1px solid var(--c-border);
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
}
.mail-list-title-group { display: flex; align-items: center; gap: 10px; flex: 1; min-width: 0; }
.mail-list-header h2 { font-size: 14px; font-weight: 600; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.select-all-label {
  display: flex; align-items: center; gap: 4px;
  font-size: 11px; color: var(--c-text-sub);
  cursor: pointer; user-select: none; flex-shrink: 0;
}
.select-all-label input[type="checkbox"] { accent-color: var(--c-primary); }
.mail-date-filter {
  padding: 8px 14px;
  border-bottom: 1px solid var(--c-border);
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
  flex-shrink: 0;
  background: var(--c-hover);
}
.mail-date-filter label { display: flex; align-items: center; gap: 6px; font-size: 12px; color: var(--c-text-sub); }
.mail-list-body {
  overflow-y: auto;
  flex: 1;
}

.mail-item {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 10px 14px;
  border-bottom: 1px solid var(--c-border);
  cursor: pointer;
  transition: background .1s;
  position: relative;
}
.mail-item:hover    { background: var(--c-hover); }
.mail-item.selected { background: var(--c-selected); }
.mail-item.unread   { background: var(--c-unread-bg); }
.mail-item.unread:hover    { background: var(--c-selected); }
.mail-item.dragging { opacity: .45; }

.folder-item.drop-target {
  background: var(--c-sidebar-h);
  outline: 2px dashed var(--c-primary);
  outline-offset: -2px;
}

.mail-item-check {
  width: 16px;
  height: 16px;
  margin-top: 2px;
  flex-shrink: 0;
  accent-color: var(--c-primary);
}
.mail-item-unread-dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--c-unread-dot);
  flex-shrink: 0;
  margin-top: 5px;
}
.mail-item-unread-dot.read { background: transparent; }

.mail-item-body { flex: 1; min-width: 0; }
.mail-item-row1 { display: flex; justify-content: space-between; align-items: baseline; gap: 8px; }
.mail-item-from-group { display: flex; align-items: baseline; gap: 2px; overflow: hidden; min-width: 0; }
.mail-item-from { font-weight: 500; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; font-size: 13px; }
.mail-item-date { font-size: 11px; color: var(--c-text-sub); white-space: nowrap; flex-shrink: 0; }
.mail-item-subject { font-size: 13px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; color: var(--c-text); }
.mail-item.unread .mail-item-from,
.mail-item.unread .mail-item-subject { font-weight: 600; }
.mail-item-preview { font-size: 12px; color: var(--c-text-sub); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.mail-item-icons { display: flex; gap: 4px; align-items: center; margin-top: 2px; font-size: 12px; color: var(--c-text-sub); }

/* ── Preview Pane ── */
.preview-pane {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  background: var(--c-surface);
}
.preview-empty {
  display: flex;
  align-items: center;
  justify-content: center;
  flex: 1;
  color: var(--c-text-sub);
  font-size: 14px;
  flex-direction: column;
  gap: 10px;
}
.preview-empty-icon { font-size: 48px; opacity: .3; }

.preview-header {
  padding: 14px 18px;
  border-bottom: 1px solid var(--c-border);
  flex-shrink: 0;
}
.preview-header h2 { font-size: 16px; font-weight: 600; line-height: 1.4; margin-bottom: 8px; }
.preview-meta { font-size: 12px; color: var(--c-text-sub); display: flex; flex-direction: column; gap: 3px; }
.preview-meta span b { color: var(--c-text); }
.sender-name-toggle { cursor: pointer; text-decoration: underline dotted; text-underline-offset: 2px; }
.sender-name-toggle:hover { color: var(--c-primary); }
.sender-address { margin-left: 4px; }

.sender-warning-badge {
  display: inline-block;
  margin-left: 6px;
  padding: 1px 7px;
  border-radius: 10px;
  font-size: 11px;
  font-weight: 600;
  background: var(--c-badge-pending-bg);
  color: var(--c-badge-pending-t);
  cursor: help;
}
.sender-warning-badge-icon { padding: 0 4px; font-size: 12px; }
.mail-item-from-group .sender-warning-badge-icon { flex-shrink: 0; margin-left: 2px; }
.preview-actions { display: flex; gap: 8px; margin-top: 10px; }

.preview-body {
  flex: 1;
  overflow-y: auto;
  padding: 16px 18px;
}
.preview-body-text { white-space: pre-wrap; font-size: 14px; line-height: 1.6; }
.preview-body iframe {
  width: 100%; height: 100%; min-height: 400px;
  border: none;
  background: #fff;
}
:root[data-theme="dark"] .preview-body iframe { background: var(--c-surface); }
.preview-html-toggle { margin-bottom: 8px; font-size: 12px; color: var(--c-primary); cursor: pointer; }

.preview-attachments {
  padding: 10px 18px;
  border-top: 1px solid var(--c-border);
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.attachment-chip {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 5px 10px;
  border: 1px solid var(--c-border);
  border-radius: 20px;
  font-size: 12px;
  color: var(--c-text);
  text-decoration: none;
  background: var(--c-bg);
  transition: background .12s;
}
.attachment-chip:hover { background: var(--c-hover); text-decoration: none; }
.attachment-chip-image { cursor: pointer; user-select: none; }

.attachment-thumb-popup {
  position: fixed;
  display: none;
  z-index: 600;
  padding: 4px;
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  pointer-events: none;
}
.attachment-thumb-popup.open { display: block; }
.attachment-thumb-popup img {
  display: block;
  max-width: 260px;
  max-height: 260px;
  border-radius: 4px;
}

/* ── Login Screen ── */
.login-screen {
  min-height: 100vh;
  background: linear-gradient(135deg, #1e1e2e 0%, #2d2d44 100%);
  display: flex;
  align-items: center;
  justify-content: center;
}
.login-box {
  background: var(--c-surface);
  border-radius: 12px;
  padding: 40px 36px;
  width: 380px;
  box-shadow: 0 20px 60px rgba(0,0,0,.3);
}
.login-logo {
  text-align: center;
  font-size: 28px;
  font-weight: 800;
  letter-spacing: -1px;
  margin-bottom: 28px;
  color: var(--c-text);
}
.login-logo span { color: var(--c-primary); }
.login-error {
  background: #fff0f0;
  border: 1px solid #fccaca;
  color: var(--c-danger);
  padding: 9px 12px;
  border-radius: var(--radius);
  font-size: 13px;
  margin-bottom: 14px;
  display: none;
}
:root[data-theme="dark"] .login-error { background: #3d2222; border-color: #5a2f2f; }
.login-error.show { display: block; }
.login-remember { display: flex; align-items: center; gap: 8px; font-size: 13px; margin-bottom: 16px; }
.login-remember input[type=checkbox] { width: auto; }
.login-btn { width: 100%; padding: 10px; font-size: 15px; font-weight: 600; }

/* ── Page Views ── */
.page-view {
  flex: 1;
  overflow-y: auto;
  padding: 24px;
  background: var(--c-bg);
}
.page-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
}
.page-header h1 { font-size: 20px; font-weight: 700; }

.card {
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  padding: 20px;
  margin-bottom: 16px;
}
.card-title { font-size: 15px; font-weight: 600; margin-bottom: 14px; padding-bottom: 10px; border-bottom: 1px solid var(--c-border); }

/* ── Data Table ── */
.data-table { width: 100%; border-collapse: collapse; font-size: 13px; }
.data-table th {
  text-align: left;
  padding: 8px 12px;
  font-weight: 600;
  border-bottom: 2px solid var(--c-border);
  color: var(--c-text-sub);
}
.data-table td { padding: 10px 12px; border-bottom: 1px solid var(--c-border); vertical-align: middle; }
.data-table tr:hover td { background: var(--c-hover); }

/* ── Status badges ── */
.badge {
  display: inline-flex; align-items: center; justify-content: center;
  padding: 2px 8px;
  border-radius: 12px;
  font-size: 11px;
  font-weight: 600;
}
.badge-ok      { background: var(--c-badge-ok-bg);      color: var(--c-badge-ok-t); }
.badge-error   { background: var(--c-badge-error-bg);   color: var(--c-badge-error-t); }
.badge-unknown { background: var(--c-badge-unknown-bg); color: var(--c-badge-unknown-t); }
.badge-success { background: var(--c-badge-ok-bg);      color: var(--c-badge-ok-t); }
.badge-failed  { background: var(--c-badge-error-bg);   color: var(--c-badge-error-t); }
.badge-pending { background: var(--c-badge-pending-bg); color: var(--c-badge-pending-t); }
.badge-default { background: var(--c-primary); color: #fff; }

/* ── Compose Modal ── */
.modal-overlay {
  position: fixed; inset: 0;
  background: rgba(0,0,0,.5);
  display: none;
  align-items: flex-end;
  justify-content: flex-end;
  padding: 16px;
  z-index: 500;
}
.modal-overlay.open { display: flex; }
.modal-overlay-center { align-items: center; justify-content: center; }

/* ── Attachment image preview modal ── */
.attachment-preview-modal {
  background: var(--c-surface);
  border-radius: var(--radius);
  max-width: 92vw;
  max-height: 92vh;
  display: flex;
  flex-direction: column;
  box-shadow: 0 8px 40px rgba(0,0,0,.3);
  overflow: hidden;
}
.attachment-preview-toolbar {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 12px;
  border-bottom: 1px solid var(--c-border);
}
.attachment-preview-name { font-size: 13px; flex: 1; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.attachment-preview-body {
  flex: 1;
  overflow: auto;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 12px;
  background: var(--c-bg);
}
.attachment-preview-body img { max-width: 100%; max-height: 82vh; display: block; }

.compose-modal {
  background: var(--c-surface);
  border-radius: 10px 10px 6px 6px;
  width: 600px;
  max-height: 80vh;
  display: flex;
  flex-direction: column;
  box-shadow: 0 8px 40px rgba(0,0,0,.3);
}
.compose-titlebar {
  background: var(--c-sidebar);
  color: var(--c-sidebar-fg);
  padding: 10px 14px;
  border-radius: 10px 10px 0 0;
  display: flex;
  align-items: center;
  font-weight: 600;
  font-size: 13px;
}
.compose-titlebar-actions { margin-left: auto; display: flex; gap: 8px; }
.compose-titlebar-actions button { color: var(--c-sidebar-fg-dim); padding: 2px 6px; font-size: 16px; }
.compose-titlebar-actions button:hover { color: var(--c-sidebar-fg); }

.compose-fields { padding: 12px 14px; border-bottom: 1px solid var(--c-border); display: flex; flex-direction: column; gap: 6px; }
.compose-field { display: flex; align-items: baseline; gap: 8px; }
.compose-field label { width: 40px; font-size: 12px; color: var(--c-text-sub); text-align: right; flex-shrink: 0; }
.compose-field input, .compose-field select { border: none; border-bottom: 1px solid transparent; border-radius: 0; padding: 3px 0; font-size: 13px; }
.compose-field input:focus { border-bottom-color: var(--c-primary); }
.compose-cc-toggle { font-size: 12px; color: var(--c-primary); cursor: pointer; margin-left: auto; }
.compose-cc-row { display: none; }
.compose-cc-row.show { display: flex; }

.compose-body-toolbar {
  padding: 6px 14px;
  border-bottom: 1px solid var(--c-border);
  display: flex;
  gap: 4px;
}
.compose-body-toolbar button { padding: 4px 8px; font-size: 12px; border: 1px solid var(--c-border); }
.compose-body-toolbar button.active { background: var(--c-hover); }
.compose-editor {
  flex: 1;
  overflow-y: auto;
  padding: 12px 14px;
  min-height: 200px;
}
.compose-editor textarea {
  width: 100%; height: 100%; min-height: 180px;
  border: none; resize: none; font-size: 14px; line-height: 1.6;
}
.compose-editor [contenteditable] {
  min-height: 180px; outline: none; font-size: 14px; line-height: 1.6;
}
.compose-attachments { padding: 8px 14px; border-top: 1px solid var(--c-border); display: flex; flex-wrap: wrap; gap: 6px; align-items: center; }
.compose-att-chip {
  display: flex; align-items: center; gap: 4px;
  padding: 3px 8px; border: 1px solid var(--c-border); border-radius: 12px; font-size: 12px;
}
.compose-att-chip button { padding: 0 2px; font-size: 14px; color: var(--c-text-sub); }
.compose-footer { padding: 10px 14px; display: flex; gap: 8px; align-items: center; border-top: 1px solid var(--c-border); }
.compose-footer label { color: var(--c-primary); cursor: pointer; font-size: 12px; }
.compose-footer input[type=file] { display: none; }
.compose-footer .spacer { flex: 1; }

/* ── Toast ── */
.toast-container { position: fixed; bottom: 20px; left: 50%; transform: translateX(-50%); z-index: 9999; display: flex; flex-direction: column; gap: 8px; pointer-events: none; }
.toast {
  background: var(--c-toast-bg);
  color: #fff;
  padding: 10px 18px;
  border-radius: 20px;
  font-size: 13px;
  box-shadow: var(--shadow);
  animation: fadeUp .2s ease;
  pointer-events: auto;
}
.toast.error   { background: var(--c-danger); }
.toast.success { background: var(--c-success); }
@keyframes fadeUp { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: translateY(0); } }

/* ── Skeleton loader ── */
.skeleton { background: linear-gradient(90deg, var(--c-skeleton-a) 25%, var(--c-skeleton-b) 50%, var(--c-skeleton-a) 75%); background-size: 200% 100%; animation: shimmer 1.2s infinite; border-radius: 4px; }
@keyframes shimmer { 0% { background-position: 200% 0; } 100% { background-position: -200% 0; } }
.skeleton-row { height: 60px; margin-bottom: 1px; }
.skeleton-line { height: 14px; margin-bottom: 8px; }

/* ── Context menu ── */
.ctx-menu {
  position: fixed;
  background: var(--c-surface);
  border: 1px solid var(--c-border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  z-index: 400;
  min-width: 160px;
  display: none;
}
.ctx-menu.open { display: block; }
.ctx-menu-item { padding: 8px 14px; font-size: 13px; cursor: pointer; }
.ctx-menu-item:hover { background: var(--c-hover); }
.ctx-menu-sep { border-top: 1px solid var(--c-border); margin: 4px 0; }

/* ── Folder management ── */
.folder-mgmt-table { width: 100%; font-size: 13px; border-collapse: collapse; }
.folder-mgmt-table th { padding: 8px 10px; text-align: left; font-weight: 600; color: var(--c-text-sub); border-bottom: 2px solid var(--c-border); }
.folder-mgmt-table td { padding: 8px 10px; border-bottom: 1px solid var(--c-border); }
.folder-handle { cursor: grab; color: var(--c-text-sub); }
.folder-sort-btn { padding: 2px 6px; font-size: 12px; border: 1px solid var(--c-border); }

/* ── Pagination ── */
.pagination { display: flex; gap: 4px; justify-content: center; margin-top: 16px; }
.pagination button { min-width: 32px; height: 32px; padding: 0 8px; font-size: 13px; border: 1px solid var(--c-border); }
.pagination button.active { background: var(--c-primary); color: #fff; border-color: var(--c-primary); }

/* ── Responsive ── */
@media (max-width: 768px) {
  .sidebar       { width: 100%; position: fixed; left: -100%; top: var(--hdr-h); bottom: 0; z-index: 300; transition: left .2s; }
  .sidebar.open  { left: 0; }
  .mail-list-pane { width: 100%; border-right: none; }
  .preview-pane  { display: none; }
  .preview-pane.mobile-show { display: flex; position: fixed; inset: var(--hdr-h) 0 0 0; z-index: 200; }
  .compose-modal { width: 100%; border-radius: 10px 10px 0 0; }
  .modal-overlay { padding: 0; align-items: flex-end; }
  .header-search { display: none; }
  .mobile-menu-btn { display: flex; }
}