/* ==========================================================================
   ORIBIN MAIL — LUXURY PURPLE THEME DESIGN SYSTEM
   Domain: mail.oribin.in
   Standard: Proton Mail / Linear / Raycast Luxury Minimalist Purple
   ========================================================================== */

:root {
  /* Purple Brand Palette */
  --purple-950: #2E1065;
  --purple-900: #3B0764;
  --purple-800: #581C87;
  --purple-700: #6D28D9;
  --purple-600: #7C3AED;
  --purple-500: #8B5CF6;
  --purple-400: #A78BFA;
  --purple-300: #C4B5FD;
  --purple-200: #DDD6FE;
  --purple-100: #EDE9FE;
  --purple-50:  #F5F3FF;
  --purple-25:  #FAF8FE;

  /* Surfaces & Canvas */
  --bg-canvas: #F8F7FC;
  --bg-surface: #FFFFFF;
  --bg-sidebar: #FAF8FE;
  --bg-hover: #F3EEFF;
  --bg-active: #EDE9FE;
  --bg-selected: #F5F1FD;
  
  /* Text Hierarchy (Rich Aubergine Obsidian) */
  --text-primary: #1C1427;
  --text-secondary: #564B66;
  --text-tertiary: #8A7E9C;
  --text-muted: #C4BCD3;

  /* Hairline Borders */
  --border-subtle: #F1ECF9;
  --border-default: #E5DEF0;
  --border-purple: #D7CAEE;
  --border-focus: #7C3AED;

  /* Accent Semantics */
  --accent-primary: #7C3AED;
  --accent-primary-hover: #6D28D9;
  --accent-emerald: #10B981;
  --accent-amber: #F59E0B;
  --accent-rose: #EF4444;

  /* Radii */
  --radius-xs: 4px;
  --radius-sm: 6px;
  --radius-md: 8px;
  --radius-lg: 12px;

  /* Subtle Crisp Elevation & Glows */
  --shadow-subtle: 0 1px 3px 0 rgba(76, 29, 149, 0.04), 0 1px 2px -1px rgba(76, 29, 149, 0.04);
  --shadow-card: 0 4px 20px -2px rgba(109, 40, 217, 0.08), 0 2px 6px -1px rgba(109, 40, 217, 0.04);
  --shadow-dropdown: 0 12px 28px -4px rgba(76, 29, 149, 0.12), 0 6px 12px -4px rgba(76, 29, 149, 0.06);
  --shadow-modal: 0 24px 48px -12px rgba(46, 16, 101, 0.22), 0 0 1px 1px rgba(124, 58, 237, 0.1);
  --purple-glow: 0 0 0 3px rgba(124, 58, 237, 0.15);
  --purple-btn-shadow: 0 4px 14px rgba(124, 58, 237, 0.28);
}

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

html, body {
  height: 100%;
  width: 100%;
  overflow: hidden;
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background-color: var(--bg-canvas);
  color: var(--text-primary);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

/* Custom Purple Scrollbars */
::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}
::-webkit-scrollbar-track {
  background: transparent;
}
::-webkit-scrollbar-thumb {
  background: var(--purple-200);
  border-radius: 9999px;
}
::-webkit-scrollbar-thumb:hover {
  background: var(--purple-400);
}

/* ==========================================================================
   DEDICATED FULL-SCREEN EXECUTIVE AUTH SCREEN
   ========================================================================== */

.auth-viewport {
  position: fixed;
  inset: 0;
  z-index: 1000;
  background: radial-gradient(circle at 50% 15%, #FAF5FF 0%, #F5F0FF 45%, #EBE4FA 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  overflow-y: auto;
}

.auth-layout-box {
  width: 100%;
  max-width: 420px;
  display: flex;
  flex-direction: column;
  gap: 20px;
  animation: fadeIn 0.24s cubic-bezier(0.16, 1, 0.3, 1);
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

.auth-brand-header {
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.auth-brand-logo-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 14px;
  background: transparent;
  border: none;
  transition: transform 0.2s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.auth-brand-logo-link:hover {
  transform: translateY(-2px) scale(1.06);
}

.auth-brand-logo {
  width: 58px;
  height: 58px;
  object-fit: contain;
  filter: drop-shadow(0 4px 14px rgba(0, 0, 0, 0.1));
}

.auth-brand-title {
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: -0.025em;
  color: var(--text-primary);
  margin-bottom: 4px;
  background: linear-gradient(135deg, #1C1427 30%, #6D28D9 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.auth-brand-subtitle {
  font-size: 0.85rem;
  color: var(--text-secondary);
}

/* Segmented Navigation Tab */
.auth-segmented-nav {
  display: flex;
  background: rgba(237, 233, 254, 0.6);
  padding: 3px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--purple-200);
  backdrop-filter: blur(8px);
}

.segmented-nav-btn {
  flex: 1;
  padding: 8px 12px;
  border: none;
  background: transparent;
  font-family: inherit;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-secondary);
  border-radius: var(--radius-xs);
  cursor: pointer;
  transition: all 0.15s ease;
}

.segmented-nav-btn:hover {
  color: var(--purple-700);
}

.segmented-nav-btn.active {
  background: #FFFFFF;
  color: var(--purple-700);
  box-shadow: 0 2px 8px rgba(109, 40, 217, 0.1);
}

/* Auth Card */
.auth-form-card {
  background: #FFFFFF;
  border: 1px solid var(--purple-200);
  border-radius: var(--radius-lg);
  padding: 26px;
  box-shadow: var(--shadow-card);
  display: flex;
  flex-direction: column;
  gap: 16px;
  position: relative;
  overflow: hidden;
}

.auth-form-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, #7C3AED, #9333EA, #C084FC);
}

.form-field-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.form-field-label {
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--purple-700);
}

.form-field-input {
  width: 100%;
  padding: 10px 13px;
  border: 1px solid var(--border-default);
  border-radius: var(--radius-sm);
  font-family: inherit;
  font-size: 0.88rem;
  color: var(--text-primary);
  background: #FFFFFF;
  outline: none;
  transition: border-color 0.15s, box-shadow 0.15s;
}

.form-field-input:focus {
  border-color: var(--purple-600);
  box-shadow: var(--purple-glow);
}

.input-handle-container {
  position: relative;
  display: flex;
  align-items: center;
}

.handle-input {
  padding-right: 92px;
}

.handle-suffix {
  position: absolute;
  right: 12px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--purple-700);
  pointer-events: none;
}

.handle-availability-note {
  font-size: 0.72rem;
  color: var(--text-tertiary);
  margin-top: 2px;
}

.handle-availability-note.success {
  color: var(--accent-emerald);
  font-weight: 600;
}

.handle-availability-note.error {
  color: var(--accent-rose);
  font-weight: 600;
}

.auth-error-banner {
  padding: 9px 12px;
  background: #FEF2F2;
  border: 1px solid #FEE2E2;
  border-radius: var(--radius-sm);
  font-size: 0.78rem;
  color: #DC2626;
  font-weight: 500;
  line-height: 1.4;
}

.auth-action-btn {
  background: linear-gradient(135deg, #7C3AED 0%, #6D28D9 100%);
  color: #FFFFFF;
  border: none;
  padding: 11px 18px;
  border-radius: var(--radius-sm);
  font-family: inherit;
  font-size: 0.88rem;
  font-weight: 600;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  box-shadow: var(--purple-btn-shadow);
  transition: all 0.15s ease;
  margin-top: 4px;
}

.auth-action-btn:hover {
  background: linear-gradient(135deg, #8B5CF6 0%, #7C3AED 100%);
  transform: translateY(-1px);
  box-shadow: 0 6px 18px rgba(124, 58, 237, 0.36);
}

.auth-action-btn:active {
  transform: translateY(0);
}

.auth-action-btn:disabled {
  opacity: 0.65;
  cursor: not-allowed;
  transform: none;
  box-shadow: none;
}

.auth-feature-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding-top: 14px;
  border-top: 1px solid var(--border-subtle);
}

.feature-item {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.74rem;
  color: var(--text-secondary);
  font-weight: 500;
}

.feature-item svg {
  color: var(--purple-600);
  flex-shrink: 0;
}

.auth-toggle-hint {
  font-size: 0.78rem;
  color: var(--text-tertiary);
  text-align: center;
  margin-top: 4px;
}

.auth-toggle-hint a {
  color: var(--purple-700);
  font-weight: 600;
  text-decoration: underline;
  cursor: pointer;
}

/* ==========================================================================
   MAIN APPLICATION WORKSPACE (TOPBAR + 3 COLUMNS)
   ========================================================================== */

.mail-app-container {
  display: flex;
  flex-direction: column;
  height: 100vh;
  width: 100vw;
  background: var(--bg-canvas);
}

/* TOPBAR */
.topbar {
  height: 50px;
  background: #FFFFFF;
  border-bottom: 1px solid var(--border-default);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 16px;
  z-index: 20;
  user-select: none;
}

.topbar-left {
  display: flex;
  align-items: center;
}

.brand-wrap {
  display: flex;
  align-items: center;
  gap: 8px;
  text-decoration: none;
}

.brand-icon {
  width: 26px;
  height: 26px;
  object-fit: contain;
  filter: drop-shadow(0 1px 3px rgba(0, 0, 0, 0.12));
}

.brand-title {
  font-size: 0.98rem;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -0.02em;
}

.mail-app-badge {
  font-size: 0.65rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  background: var(--purple-100);
  color: var(--purple-700);
  padding: 2px 6px;
  border-radius: var(--radius-xs);
  border: 1px solid var(--purple-200);
}

/* Topbar Search */
.topbar-search-wrap {
  position: relative;
  width: 340px;
  display: flex;
  align-items: center;
}

.search-icon-svg {
  position: absolute;
  left: 10px;
  color: var(--purple-400);
  pointer-events: none;
}

.search-input-box {
  width: 100%;
  height: 32px;
  padding: 0 32px 0 32px;
  background: var(--bg-canvas);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-sm);
  font-family: inherit;
  font-size: 0.82rem;
  color: var(--text-primary);
  outline: none;
  transition: all 0.15s ease;
}

.search-input-box:focus {
  background: #FFFFFF;
  border-color: var(--purple-600);
  box-shadow: var(--purple-glow);
}

.search-shortcut-hint {
  position: absolute;
  right: 8px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.68rem;
  font-weight: 600;
  color: var(--purple-500);
  background: #FFFFFF;
  border: 1px solid var(--purple-200);
  padding: 1px 5px;
  border-radius: var(--radius-xs);
  pointer-events: none;
}

/* Topbar Right Controls */
.topbar-right {
  display: flex;
  align-items: center;
  gap: 10px;
}

/* User Profile Badge */
.user-profile-badge {
  display: flex;
  align-items: center;
  gap: 8px;
  background: var(--purple-50);
  border: 1px solid var(--purple-200);
  padding: 3px 10px 3px 4px;
  border-radius: var(--radius-sm);
  font-size: 0.78rem;
  font-weight: 600;
}

.user-mini-avatar {
  width: 24px;
  height: 24px;
  border-radius: var(--radius-xs);
  background: linear-gradient(135deg, #7C3AED 0%, #6D28D9 100%);
  color: #FFFFFF;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.7rem;
  font-weight: 700;
  box-shadow: 0 1px 3px rgba(109, 40, 217, 0.3);
}

.signout-btn {
  background: transparent;
  border: none;
  font-family: inherit;
  font-size: 0.74rem;
  font-weight: 600;
  color: var(--accent-rose);
  cursor: pointer;
  padding: 3px 6px;
  border-radius: var(--radius-xs);
  transition: background 0.12s;
  margin-left: 4px;
}

.signout-btn:hover {
  background: #FEF2F2;
}

/* ==========================================================================
   WORKSPACE GRID (3 COLUMNS)
   ========================================================================== */

.mail-workspace {
  display: grid;
  grid-template-columns: 220px 350px 1fr;
  flex: 1;
  overflow: hidden;
  height: calc(100vh - 50px);
}

/* ==========================================================================
   COLUMN 1: SIDEBAR
   ========================================================================== */

.sidebar {
  background: var(--bg-sidebar);
  border-right: 1px solid var(--border-default);
  display: flex;
  flex-direction: column;
  padding: 12px 10px;
  overflow-y: auto;
  user-select: none;
}

/* User Account Selector Box */
.account-selector-wrap {
  position: relative;
  margin-bottom: 12px;
}

.account-selector-btn {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 7px 9px;
  background: #FFFFFF;
  border: 1px solid var(--purple-200);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all 0.12s ease;
  box-shadow: var(--shadow-subtle);
}

.account-selector-btn:hover {
  background: var(--bg-hover);
  border-color: var(--purple-300);
}

.account-info-left {
  display: flex;
  align-items: center;
  gap: 8px;
  overflow: hidden;
}

.account-avatar {
  width: 28px;
  height: 28px;
  border-radius: var(--radius-xs);
  background: linear-gradient(135deg, #7C3AED 0%, #6D28D9 100%);
  color: #FFFFFF;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.74rem;
  font-weight: 700;
  flex-shrink: 0;
  box-shadow: 0 2px 4px rgba(109, 40, 217, 0.2);
}

.account-texts {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  overflow: hidden;
  line-height: 1.25;
}

.account-label {
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 130px;
}

.account-email-current {
  font-size: 0.68rem;
  color: var(--purple-700);
  font-family: 'JetBrains Mono', monospace;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 130px;
}

.account-chevron {
  color: var(--purple-400);
  flex-shrink: 0;
}

/* Account Dropdown */
.account-dropdown-menu {
  display: none;
  position: absolute;
  top: calc(100% + 4px);
  left: 0;
  right: 0;
  background: #FFFFFF;
  border: 1px solid var(--purple-200);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-dropdown);
  z-index: 100;
  overflow: hidden;
}

.account-dropdown-menu.open {
  display: block;
}

.account-menu-header {
  font-size: 0.68rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--purple-700);
  padding: 8px 12px 4px;
}

.account-menu-item {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 12px;
  border: none;
  background: transparent;
  font-family: inherit;
  cursor: pointer;
  text-align: left;
  transition: background 0.12s;
}

.account-menu-item:hover {
  background: var(--bg-hover);
}

.account-menu-item.active {
  background: var(--purple-100);
}

.item-left {
  display: flex;
  align-items: center;
  gap: 8px;
}

.item-avatar-mini {
  width: 20px;
  height: 20px;
  border-radius: var(--radius-xs);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.65rem;
  font-weight: 700;
  color: #FFFFFF;
}

.item-email {
  font-size: 0.78rem;
  color: var(--text-primary);
}

.item-check {
  font-size: 0.76rem;
  color: var(--purple-700);
  font-weight: 700;
}

/* Compose Button */
.compose-btn {
  background: linear-gradient(135deg, #7C3AED 0%, #6D28D9 100%);
  color: #FFFFFF;
  border: none;
  border-radius: var(--radius-sm);
  padding: 9px 14px;
  font-family: inherit;
  font-size: 0.84rem;
  font-weight: 600;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  box-shadow: var(--purple-btn-shadow);
  transition: all 0.15s ease;
  margin-bottom: 16px;
}

.compose-btn:hover {
  background: linear-gradient(135deg, #8B5CF6 0%, #7C3AED 100%);
  transform: translateY(-1px);
  box-shadow: 0 6px 18px rgba(124, 58, 237, 0.36);
}

.btn-kbd-hint {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.66rem;
  background: rgba(255, 255, 255, 0.22);
  padding: 1px 6px;
  border-radius: var(--radius-xs);
}

/* Folder Navigation */
.nav-group-title {
  font-size: 0.68rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--purple-700);
  padding: 0 8px 6px;
}

.nav-folder-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.nav-folder-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 7px 10px;
  border-radius: var(--radius-sm);
  text-decoration: none;
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--text-secondary);
  transition: all 0.12s ease;
  border-left: 3px solid transparent;
}

.nav-folder-item:hover {
  background: var(--bg-hover);
  color: var(--purple-700);
}

.nav-folder-item.active {
  background: var(--purple-100);
  color: var(--purple-800);
  font-weight: 600;
  border-left-color: var(--purple-600);
}

.folder-left-wrap {
  display: flex;
  align-items: center;
  gap: 9px;
}

.folder-svg {
  color: var(--purple-400);
  transition: color 0.12s;
}

.nav-folder-item:hover .folder-svg {
  color: var(--purple-600);
}

.nav-folder-item.active .folder-svg {
  color: var(--purple-700);
}

.folder-count-badge {
  font-size: 0.68rem;
  font-weight: 700;
  background: var(--purple-600);
  color: #FFFFFF;
  padding: 1px 6px;
  border-radius: 9999px;
  box-shadow: 0 1px 3px rgba(124, 58, 237, 0.3);
}

/* Sidebar Footer (Storage) */
.sidebar-footer {
  margin-top: auto;
  padding: 12px 6px 4px;
  border-top: 1px solid var(--border-default);
}

.storage-bar-wrap {
  display: flex;
  flex-direction: column;
  gap: 5px;
}

.storage-info-row {
  display: flex;
  justify-content: space-between;
  font-size: 0.68rem;
  font-weight: 600;
  color: var(--purple-700);
}

.storage-track {
  height: 4px;
  background: var(--purple-100);
  border-radius: var(--radius-xs);
  overflow: hidden;
}

.storage-fill {
  height: 100%;
  background: linear-gradient(90deg, #7C3AED, #9333EA);
  border-radius: var(--radius-xs);
}

.storage-plan-text {
  font-size: 0.66rem;
  color: var(--text-tertiary);
  margin-top: 4px;
}

/* ==========================================================================
   COLUMN 2: THREADS LIST
   ========================================================================== */

.threads-column {
  background: #FFFFFF;
  border-right: 1px solid var(--border-default);
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.threads-toolbar {
  height: 50px;
  border-bottom: 1px solid var(--border-default);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 14px;
  user-select: none;
  background: #FFFFFF;
}

.toolbar-title-wrap {
  display: flex;
  align-items: baseline;
  gap: 6px;
}

.toolbar-title {
  font-size: 0.94rem;
  font-weight: 700;
  letter-spacing: -0.015em;
  color: var(--text-primary);
}

.toolbar-count {
  font-size: 0.72rem;
  color: var(--purple-700);
  font-weight: 600;
}

.threads-filter-pills {
  display: flex;
  gap: 2px;
  background: var(--bg-canvas);
  padding: 2px;
  border-radius: var(--radius-xs);
  border: 1px solid var(--purple-200);
}

.filter-pill-btn {
  background: transparent;
  border: none;
  font-family: inherit;
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--text-secondary);
  padding: 3px 8px;
  border-radius: var(--radius-xs);
  cursor: pointer;
  transition: all 0.12s;
}

.filter-pill-btn:hover {
  color: var(--purple-700);
}

.filter-pill-btn.active {
  background: #FFFFFF;
  color: var(--purple-700);
  box-shadow: 0 1px 3px rgba(109, 40, 217, 0.12);
}

/* Threads Feed */
.threads-feed {
  flex: 1;
  overflow-y: auto;
}

.thread-row {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 12px 14px;
  border-bottom: 1px solid var(--border-subtle);
  border-left: 3px solid transparent;
  cursor: pointer;
  transition: background 0.1s ease, border-left-color 0.1s ease;
  position: relative;
}

.thread-row:hover {
  background: var(--bg-canvas);
}

.thread-row.active {
  background: var(--purple-50);
  border-left-color: var(--purple-600);
}

.thread-left-col {
  display: flex;
  align-items: center;
  gap: 6px;
  margin-top: 3px;
  flex-shrink: 0;
}

.thread-unread-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: transparent;
}

.thread-row.unread .thread-unread-dot {
  background: var(--purple-600);
  box-shadow: 0 0 6px rgba(124, 58, 237, 0.6);
}

.star-btn {
  background: transparent;
  border: none;
  cursor: pointer;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1px;
  transition: color 0.12s;
}

.star-btn:hover {
  color: var(--purple-500);
}

.star-btn.starred {
  color: var(--accent-amber);
}

.thread-content-wrap {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.thread-meta-row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
}

.thread-sender-name {
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.thread-row.unread .thread-sender-name {
  font-weight: 700;
  color: var(--purple-950);
}

.thread-time {
  font-size: 0.68rem;
  color: var(--text-tertiary);
  font-family: 'JetBrains Mono', monospace;
  flex-shrink: 0;
}

.thread-subject {
  font-size: 0.78rem;
  color: var(--text-secondary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.thread-row.unread .thread-subject {
  color: var(--text-primary);
  font-weight: 600;
}

.thread-snippet {
  font-size: 0.73rem;
  color: var(--text-tertiary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  line-height: 1.3;
}

/* Empty Thread Feed State */
.empty-threads-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 60px 24px;
  text-align: center;
  color: var(--text-tertiary);
}

.empty-icon-wrap {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  background: var(--purple-50);
  border: 1px solid var(--purple-200);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 12px;
  color: var(--purple-600);
}

.empty-title {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 2px;
}

.empty-sub {
  font-size: 0.76rem;
  color: var(--text-secondary);
}

/* ==========================================================================
   COLUMN 3: READING PANE & VIEWER
   ========================================================================== */

.viewer-column {
  background: #FFFFFF;
  display: flex;
  flex-direction: column;
  overflow-y: auto;
  position: relative;
}

/* Blank Viewer State */
.viewer-blank-state {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 32px;
}

.blank-icon-wrap {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-md);
  background: var(--purple-50);
  border: 1px solid var(--purple-200);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
  color: var(--purple-600);
  box-shadow: 0 4px 12px rgba(124, 58, 237, 0.08);
}

.blank-title {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 4px;
}

.blank-desc {
  font-size: 0.84rem;
  color: var(--text-secondary);
  max-width: 320px;
  line-height: 1.45;
  margin-bottom: 24px;
}

.shortcuts-cheat-sheet {
  display: flex;
  gap: 16px;
  padding: 8px 16px;
  background: var(--bg-canvas);
  border: 1px solid var(--purple-200);
  border-radius: var(--radius-sm);
}

.shortcut-pair {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.74rem;
  color: var(--text-secondary);
  font-weight: 500;
}

.shortcut-pair kbd {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.68rem;
  font-weight: 600;
  color: var(--purple-700);
  background: #FFFFFF;
  border: 1px solid var(--purple-200);
  padding: 1px 6px;
  border-radius: var(--radius-xs);
  box-shadow: 0 1px 2px rgba(109, 40, 217, 0.06);
}

/* Active Conversation Viewer */
.active-mail-viewer {
  display: flex;
  flex-direction: column;
  flex: 1;
}

.viewer-header-bar {
  padding: 20px 28px 16px;
  border-bottom: 1px solid var(--border-default);
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  background: #FFFFFF;
}

.mail-tag-pill {
  display: inline-block;
  font-size: 0.65rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  background: var(--purple-100);
  color: var(--purple-700);
  padding: 2px 7px;
  border-radius: var(--radius-xs);
  border: 1px solid var(--purple-200);
  margin-bottom: 6px;
}

.mail-subject-display {
  font-size: 1.3rem;
  font-weight: 700;
  letter-spacing: -0.025em;
  color: var(--text-primary);
  line-height: 1.3;
}

.mail-actions-toolbar {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
}

.action-icon-btn {
  display: flex;
  align-items: center;
  gap: 5px;
  background: #FFFFFF;
  border: 1px solid var(--border-default);
  padding: 6px 11px;
  border-radius: var(--radius-sm);
  font-family: inherit;
  font-size: 0.76rem;
  font-weight: 600;
  color: var(--text-secondary);
  cursor: pointer;
  transition: all 0.12s;
}

.action-icon-btn:hover {
  background: var(--bg-hover);
  color: var(--purple-700);
  border-color: var(--purple-300);
}

.action-icon-btn.danger:hover {
  background: #FEF2F2;
  border-color: #FCA5A5;
  color: var(--accent-rose);
}

/* Sender Details Card */
.mail-parties-card {
  padding: 14px 28px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--border-subtle);
  background: var(--purple-25);
}

.parties-left {
  display: flex;
  align-items: center;
  gap: 12px;
}

.parties-avatar {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-xs);
  background: linear-gradient(135deg, #7C3AED 0%, #6D28D9 100%);
  color: #FFFFFF;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.85rem;
  font-weight: 700;
  box-shadow: 0 2px 6px rgba(109, 40, 217, 0.2);
}

.parties-details {
  display: flex;
  flex-direction: column;
}

.sender-title {
  font-size: 0.86rem;
  font-weight: 600;
  color: var(--text-primary);
}

.sender-email-line {
  font-size: 0.74rem;
  color: var(--text-secondary);
  font-family: 'JetBrains Mono', monospace;
}

.parties-right {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 3px;
}

.mail-timestamp-text {
  font-size: 0.72rem;
  color: var(--text-tertiary);
  font-family: 'JetBrains Mono', monospace;
}

.security-lock-badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  font-size: 0.68rem;
  font-weight: 600;
  color: var(--purple-700);
}

/* Mail Body Canvas */
.mail-body-canvas {
  padding: 28px;
  font-size: 0.92rem;
  line-height: 1.68;
  color: #271E36;
  flex: 1;
}

.mail-body-canvas p {
  margin-bottom: 14px;
}

.mail-body-canvas ul, .mail-body-canvas ol {
  margin-bottom: 14px;
  padding-left: 22px;
}

.mail-body-canvas li {
  margin-bottom: 5px;
}

.mail-body-canvas a {
  color: var(--purple-700);
  text-decoration: underline;
  font-weight: 500;
}

.mail-body-canvas kbd {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.78rem;
  background: var(--purple-100);
  color: var(--purple-900);
  border: 1px solid var(--purple-200);
  padding: 1px 6px;
  border-radius: var(--radius-xs);
}

/* Inline Reply Box */
.inline-reply-box {
  margin: 0 28px 28px;
  border: 1px solid var(--purple-200);
  border-radius: var(--radius-md);
  padding: 14px;
  background: var(--purple-25);
  display: flex;
  flex-direction: column;
  gap: 10px;
  box-shadow: var(--shadow-subtle);
}

.reply-header-label {
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--purple-700);
}

.reply-input-area {
  width: 100%;
  min-height: 75px;
  border: 1px solid var(--border-default);
  border-radius: var(--radius-sm);
  background: #FFFFFF;
  padding: 11px;
  font-family: inherit;
  font-size: 0.88rem;
  color: var(--text-primary);
  outline: none;
  resize: vertical;
  transition: border-color 0.15s, box-shadow 0.15s;
}

.reply-input-area:focus {
  border-color: var(--purple-600);
  box-shadow: var(--purple-glow);
}

.reply-footer-actions {
  display: flex;
  justify-content: flex-end;
}

.reply-send-btn {
  background: linear-gradient(135deg, #7C3AED 0%, #6D28D9 100%);
  color: #FFFFFF;
  border: none;
  padding: 8px 16px;
  border-radius: var(--radius-sm);
  font-family: inherit;
  font-size: 0.8rem;
  font-weight: 600;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 6px;
  box-shadow: var(--purple-btn-shadow);
  transition: all 0.15s ease;
}

.reply-send-btn:hover {
  background: linear-gradient(135deg, #8B5CF6 0%, #7C3AED 100%);
  transform: translateY(-1px);
}

.reply-send-btn:active {
  transform: translateY(0);
}

/* ==========================================================================
   FLOATING COMPOSE MODAL
   ========================================================================== */

.compose-modal {
  display: none;
  position: fixed;
  bottom: 24px;
  right: 24px;
  width: 530px;
  background: #FFFFFF;
  border: 1px solid var(--purple-200);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-modal);
  z-index: 1000;
  flex-direction: column;
  overflow: hidden;
  animation: slideUp 0.18s cubic-bezier(0.16, 1, 0.3, 1);
}

.compose-modal::before {
  content: '';
  height: 3px;
  background: linear-gradient(90deg, #7C3AED, #9333EA, #C084FC);
  display: block;
}

.compose-modal.open {
  display: flex;
}

@keyframes slideUp {
  from { opacity: 0; transform: translateY(14px); }
  to { opacity: 1; transform: translateY(0); }
}

.compose-header {
  height: 42px;
  padding: 0 16px;
  background: var(--purple-25);
  border-bottom: 1px solid var(--border-default);
  display: flex;
  align-items: center;
  justify-content: space-between;
  user-select: none;
}

.compose-title {
  font-size: 0.84rem;
  font-weight: 700;
  color: var(--text-primary);
}

.modal-ctrl-btn {
  background: transparent;
  border: none;
  color: var(--purple-400);
  cursor: pointer;
  font-size: 0.86rem;
  padding: 3px 6px;
  border-radius: var(--radius-xs);
  transition: all 0.12s;
}

.modal-ctrl-btn:hover {
  color: var(--purple-700);
  background: var(--purple-100);
}

.compose-form {
  display: flex;
  flex-direction: column;
  padding: 14px;
  gap: 9px;
}

.compose-field-row {
  display: flex;
  align-items: center;
  gap: 10px;
  border-bottom: 1px solid var(--border-subtle);
  padding-bottom: 7px;
}

.field-label {
  font-size: 0.74rem;
  font-weight: 700;
  color: var(--purple-700);
  width: 44px;
  flex-shrink: 0;
}

.field-input, .field-select {
  flex: 1;
  border: none;
  font-family: inherit;
  font-size: 0.84rem;
  color: var(--text-primary);
  outline: none;
  background: transparent;
}

.compose-editor-body {
  width: 100%;
  min-height: 170px;
  border: none;
  outline: none;
  font-family: inherit;
  font-size: 0.88rem;
  line-height: 1.55;
  color: var(--text-primary);
  resize: vertical;
  padding: 8px 0;
}

.compose-bottom-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 10px;
  border-top: 1px solid var(--border-subtle);
}

.compose-send-btn {
  background: linear-gradient(135deg, #7C3AED 0%, #6D28D9 100%);
  color: #FFFFFF;
  border: none;
  padding: 8px 18px;
  border-radius: var(--radius-sm);
  font-family: inherit;
  font-size: 0.82rem;
  font-weight: 600;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 6px;
  box-shadow: var(--purple-btn-shadow);
  transition: all 0.15s ease;
}

.compose-send-btn:hover {
  background: linear-gradient(135deg, #8B5CF6 0%, #7C3AED 100%);
  transform: translateY(-1px);
}

.compose-send-btn:active {
  transform: translateY(0);
}

.discard-btn {
  background: transparent;
  border: none;
  color: var(--text-tertiary);
  cursor: pointer;
  padding: 5px;
  border-radius: var(--radius-xs);
  transition: color 0.12s;
}

.discard-btn:hover {
  color: var(--accent-rose);
}

/* ==========================================================================
   TOAST NOTIFICATION
   ========================================================================== */

.toast-box {
  position: fixed;
  bottom: 22px;
  left: 50%;
  transform: translateX(-50%) translateY(30px);
  background: var(--purple-950);
  color: #FFFFFF;
  font-size: 0.82rem;
  font-weight: 600;
  padding: 9px 18px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--purple-700);
  box-shadow: 0 12px 28px -4px rgba(46, 16, 101, 0.35);
  z-index: 3000;
  opacity: 0;
  pointer-events: none;
  transition: all 0.22s cubic-bezier(0.16, 1, 0.3, 1);
}

.toast-box.show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

/* ==========================================================================
   RESPONSIVE LAYOUT BREAKPOINTS
   ========================================================================== */

@media (max-width: 1024px) {
  .mail-workspace {
    grid-template-columns: 200px 320px 1fr;
  }
}

@media (max-width: 768px) {
  .mail-workspace {
    grid-template-columns: 1fr;
  }
  .sidebar, .viewer-column {
    display: none;
  }
  .threads-column {
    width: 100%;
  }
  .compose-modal {
    width: calc(100% - 32px);
    right: 16px;
    bottom: 16px;
  }
}