/* ============================================================
   eFeMeX Mail — Institutional Communications Platform
   Monochrome Authority. Zero Ornament. Total Precision.
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Instrument+Serif:ital@0;1&family=Libre+Franklin:ital,wght@0,100;0,200;0,300;0,400;0,500;0,600;0,700;0,800;0,900;1,300;1,400&display=swap');

/* --- Reset & Foundation --- */

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

:root {
  --black: #000000;
  --white: #ffffff;
  --off-white: #f8f8f8;
  --light-gray: #e0e0e0;
  --mid-gray: #777777;
  --dark-gray: #333333;
  --error: #8b3a3a;
  --error-bg: #f5eded;

  --serif: 'Instrument Serif', Georgia, serif;
  --sans: 'Libre Franklin', 'Helvetica Neue', Arial, sans-serif;

  --page-max: 1400px;
  --page-pad: clamp(24px, 5vw, 80px);

  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-in-out: cubic-bezier(0.65, 0, 0.35, 1);

  --border-light: rgba(0, 0, 0, 0.12);
  --border-dark: rgba(255, 255, 255, 0.3);
  --border-subtle: rgba(0, 0, 0, 0.08);

  --sidebar-width: 240px;
  --toolbar-height: 52px;
  --header-height: 48px;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--sans);
  font-weight: 300;
  color: var(--black);
  background: var(--white);
  line-height: 1.6;
  overflow-x: hidden;
}

::selection {
  background: var(--black);
  color: var(--white);
}

a {
  color: inherit;
  text-decoration: none;
}

img {
  display: block;
  max-width: 100%;
}

button {
  font-family: var(--sans);
  cursor: pointer;
  border: none;
  background: none;
}

input, select, textarea {
  font-family: var(--sans);
  font-weight: 300;
  outline: none;
}

/* --- Scrollbar --- */

::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}

::-webkit-scrollbar-track {
  background: transparent;
}

::-webkit-scrollbar-thumb {
  background: rgba(0, 0, 0, 0.15);
  border-radius: 0;
}

::-webkit-scrollbar-thumb:hover {
  background: rgba(0, 0, 0, 0.25);
}

.dark-scroll::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.15);
}

.dark-scroll::-webkit-scrollbar-thumb:hover {
  background: rgba(255, 255, 255, 0.25);
}

/* --- Typography --- */

.micro-label {
  font-family: var(--sans);
  font-size: 0.65rem;
  font-weight: 600;
  letter-spacing: 0.25em;
  text-transform: uppercase;
}

.section-label {
  font-family: var(--sans);
  font-size: 0.6rem;
  font-weight: 600;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  opacity: 0.55;
}

.serif-heading {
  font-family: var(--serif);
  font-weight: 400;
  line-height: 1.1;
}

.serif-italic {
  font-family: var(--serif);
  font-style: italic;
  font-weight: 400;
}

/* --- Buttons --- */

.btn-primary {
  background: var(--black);
  color: var(--white);
  border: none;
  border-radius: 0;
  padding: 12px 32px;
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  transition: opacity 0.3s var(--ease-out);
  cursor: pointer;
  font-family: var(--sans);
}

.btn-primary:hover {
  opacity: 0.8;
}

.btn-primary.inverted {
  background: var(--white);
  color: var(--black);
}

.btn-secondary {
  background: transparent;
  color: var(--black);
  border: 1px solid rgba(0, 0, 0, 0.2);
  border-radius: 0;
  padding: 11px 32px;
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  transition: border-color 0.3s var(--ease-out);
  cursor: pointer;
  font-family: var(--sans);
}

.btn-secondary:hover {
  border-color: var(--black);
}

.btn-ghost {
  background: transparent;
  color: inherit;
  border: none;
  border-radius: 0;
  padding: 8px 16px;
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  transition: opacity 0.3s var(--ease-out);
  cursor: pointer;
  font-family: var(--sans);
}

.btn-ghost:hover {
  opacity: 0.6;
}

/* --- Form Inputs --- */

.form-input {
  border: 1px solid var(--border-light);
  border-radius: 0;
  padding: 10px 14px;
  font-size: 0.875rem;
  font-weight: 300;
  font-family: var(--sans);
  background: var(--white);
  color: var(--black);
  width: 100%;
  transition: border-color 0.3s var(--ease-out);
}

.form-input:focus {
  border-color: var(--black);
}

.form-input::placeholder {
  color: var(--mid-gray);
  font-weight: 300;
}

.form-input.dark {
  border-color: rgba(255, 255, 255, 0.4);
  background: transparent;
  color: var(--white);
}

.form-input.dark::placeholder {
  color: rgba(255, 255, 255, 0.55);
}

.form-input.dark:focus {
  border-color: rgba(255, 255, 255, 0.7);
}

.form-select {
  border: 1px solid var(--border-light);
  border-radius: 0;
  padding: 10px 14px;
  font-size: 0.875rem;
  font-weight: 300;
  font-family: var(--sans);
  background: var(--white);
  color: var(--black);
  width: 100%;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath d='M6 8L1 3h10z' fill='%23333'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 14px center;
  padding-right: 36px;
  cursor: pointer;
  transition: border-color 0.3s var(--ease-out);
}

.form-select:focus {
  border-color: var(--black);
}

.form-label {
  font-size: 0.65rem;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  margin-bottom: 8px;
  display: block;
  opacity: 0.7;
}

.form-group {
  margin-bottom: 20px;
}

.form-row {
  display: grid;
  grid-template-columns: 140px 1fr;
  gap: 16px;
  align-items: center;
  padding: 14px 0;
  border-bottom: 1px solid var(--border-subtle);
}

.form-row:last-child {
  border-bottom: none;
}

.form-row-label {
  font-size: 0.8rem;
  font-weight: 400;
  color: var(--dark-gray);
}

/* --- Toggle Switch --- */

.toggle {
  position: relative;
  display: inline-block;
  width: 36px;
  height: 18px;
  cursor: pointer;
}

.toggle input {
  opacity: 0;
  width: 0;
  height: 0;
}

.toggle-track {
  position: absolute;
  inset: 0;
  background: var(--light-gray);
  border: 1px solid var(--border-light);
  transition: background 0.3s var(--ease-out);
}

.toggle input:checked + .toggle-track {
  background: var(--black);
  border-color: var(--black);
}

.toggle-thumb {
  position: absolute;
  top: 2px;
  left: 2px;
  width: 12px;
  height: 12px;
  background: var(--white);
  border: 1px solid var(--border-light);
  transition: transform 0.3s var(--ease-out);
}

.toggle input:checked ~ .toggle-thumb {
  transform: translateX(18px);
  border-color: transparent;
}

/* --- Tooltip --- */

[data-tooltip] {
  position: relative;
}

[data-tooltip]::after {
  content: attr(data-tooltip);
  position: absolute;
  bottom: calc(100% + 8px);
  left: 50%;
  transform: translateX(-50%);
  background: var(--black);
  color: var(--white);
  font-size: 0.7rem;
  font-weight: 400;
  padding: 6px 12px;
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s var(--ease-out);
  z-index: 1000;
}

[data-tooltip]:hover::after {
  opacity: 1;
}

/* --- Grain Overlay --- */

.grain::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)' opacity='0.03'/%3E%3C/svg%3E");
  background-repeat: repeat;
  background-size: 256px 256px;
  pointer-events: none;
  z-index: 1;
}

/* --- App Layout --- */

.app-layout {
  display: grid;
  grid-template-rows: var(--toolbar-height) 1fr;
  grid-template-columns: var(--sidebar-width) 1fr;
  height: 100vh;
  overflow: hidden;
}

.app-toolbar {
  grid-column: 1 / -1;
  grid-row: 1;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 24px;
  background: var(--black);
  color: var(--white);
  border-bottom: 1px solid var(--border-dark);
  z-index: 100;
}

.app-sidebar {
  grid-column: 1;
  grid-row: 2;
  background: var(--black);
  color: var(--white);
  overflow-y: auto;
  border-right: 1px solid var(--border-dark);
}

.app-main {
  grid-column: 2;
  grid-row: 2;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

/* Toolbar */

.toolbar-brand {
  display: flex;
  align-items: center;
  gap: 12px;
}

.toolbar-wordmark {
  font-family: var(--sans);
  font-weight: 800;
  font-size: 1.1rem;
  letter-spacing: 0.1em;
  text-transform: lowercase;
}

.toolbar-wordmark .de-emphasis {
  font-weight: 200;
  opacity: 0.35;
}

.toolbar-separator {
  width: 1px;
  height: 20px;
  background: var(--border-dark);
  margin: 0 12px;
}

.toolbar-label {
  font-size: 0.6rem;
  font-weight: 500;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  opacity: 0.65;
}

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

.toolbar-btn {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 20px;
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--white);
  background: transparent;
  border: 1px solid var(--border-dark);
  transition: all 0.3s var(--ease-out);
  cursor: pointer;
}

.toolbar-btn:hover {
  border-color: rgba(255, 255, 255, 0.4);
  background: rgba(255, 255, 255, 0.05);
}

.toolbar-btn.compose {
  background: var(--white);
  color: var(--black);
  border-color: var(--white);
}

.toolbar-btn.compose:hover {
  opacity: 0.85;
}

.toolbar-btn svg {
  width: 14px;
  height: 14px;
}

.toolbar-nav {
  display: flex;
  align-items: center;
  gap: 0;
}

.toolbar-nav-item {
  padding: 0 20px;
  height: var(--toolbar-height);
  display: flex;
  align-items: center;
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.65);
  border-bottom: 2px solid transparent;
  transition: all 0.3s var(--ease-out);
  cursor: pointer;
  text-decoration: none;
}

.toolbar-nav-item:hover {
  color: rgba(255, 255, 255, 0.8);
}

.toolbar-nav-item.active {
  color: var(--white);
  border-bottom-color: var(--white);
}

.toolbar-user {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.75rem;
  font-weight: 400;
  opacity: 0.8;
}

.toolbar-user-avatar {
  width: 28px;
  height: 28px;
  border: 1px solid var(--border-dark);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.6rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

/* Sidebar */

.sidebar-header {
  padding: 20px 20px 12px;
}

.sidebar-section {
  padding: 0 0 16px;
}

.sidebar-section-label {
  font-size: 0.55rem;
  font-weight: 600;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  opacity: 0.5;
  padding: 16px 20px 8px;
}

.folder-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 9px 20px;
  font-size: 0.8rem;
  font-weight: 400;
  color: rgba(255, 255, 255, 0.75);
  cursor: pointer;
  transition: all 0.2s var(--ease-out);
  border-left: 2px solid transparent;
  text-decoration: none;
}

.folder-item:hover {
  background: rgba(255, 255, 255, 0.04);
  color: rgba(255, 255, 255, 0.95);
}

.folder-item.active {
  color: var(--white);
  font-weight: 500;
  border-left-color: var(--white);
  background: rgba(255, 255, 255, 0.06);
}

.folder-item-left {
  display: flex;
  align-items: center;
  gap: 10px;
}

.folder-item svg {
  width: 16px;
  height: 16px;
  opacity: 0.65;
  flex-shrink: 0;
}

.folder-item.active svg {
  opacity: 0.9;
}

.folder-count {
  font-size: 0.65rem;
  font-weight: 600;
  opacity: 0.85;
  min-width: 18px;
  text-align: center;
}

.folder-item.active .folder-count {
  opacity: 1;
}

.sidebar-footer {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 16px 20px;
  border-top: 1px solid var(--border-dark);
  background: var(--black);
}

.quota-bar {
  height: 2px;
  background: rgba(255, 255, 255, 0.1);
  margin-bottom: 8px;
}

.quota-fill {
  height: 100%;
  background: rgba(255, 255, 255, 0.4);
  transition: width 0.5s var(--ease-out);
}

.quota-text {
  font-size: 0.6rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  opacity: 0.55;
}

/* --- Message List --- */

.message-list-container {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  min-width: 0;
}

.list-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 20px;
  height: var(--header-height);
  border-bottom: 1px solid var(--border-light);
  background: var(--white);
  flex-shrink: 0;
}

.search-container {
  display: flex;
  align-items: center;
  gap: 10px;
  flex: 1;
  max-width: 400px;
}

.search-container svg {
  width: 16px;
  height: 16px;
  opacity: 0.5;
  flex-shrink: 0;
}

.search-input {
  border: none;
  background: transparent;
  font-size: 0.8rem;
  font-weight: 300;
  color: var(--black);
  width: 100%;
  padding: 8px 0;
}

.search-input::placeholder {
  color: var(--mid-gray);
}

.search-input:focus {
  outline: none;
}

.list-controls {
  display: flex;
  align-items: center;
  gap: 16px;
}

.list-control-btn {
  font-size: 0.65rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--mid-gray);
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px 8px;
  transition: color 0.2s var(--ease-out);
}

.list-control-btn:hover {
  color: var(--black);
}

.list-control-btn svg {
  width: 14px;
  height: 14px;
}

/* Column Headers */

.column-headers {
  display: grid;
  grid-template-columns: 32px 28px 1fr 120px 72px;
  align-items: center;
  padding: 0 16px;
  height: 36px;
  border-bottom: 1px solid rgba(0, 0, 0, 0.15);
  background: var(--off-white);
  flex-shrink: 0;
}

.column-header {
  font-size: 0.6rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  opacity: 0.6;
  cursor: pointer;
  user-select: none;
  transition: opacity 0.2s;
}

.column-header:hover {
  opacity: 0.85;
}

.column-header.sorted {
  opacity: 0.85;
}

/* Message Rows */

.message-list {
  flex: 1;
  overflow-y: auto;
}

.message-row {
  display: grid;
  grid-template-columns: 32px 28px 1fr 120px 72px;
  align-items: center;
  padding: 0 16px;
  height: 48px;
  border-bottom: 1px solid var(--border-subtle);
  cursor: pointer;
  transition: background 0.15s var(--ease-out);
}

.message-row:hover {
  background: var(--off-white);
}

.message-row.selected {
  background: #f0f0f0;
}

.message-row.unread {
  font-weight: 500;
}

.message-row.unread .message-from,
.message-row.unread .message-subject-text {
  font-weight: 600;
  color: var(--black);
}

.message-checkbox {
  display: flex;
  align-items: center;
  justify-content: center;
}

.message-checkbox input[type="checkbox"] {
  width: 14px;
  height: 14px;
  appearance: none;
  border: 1px solid var(--border-light);
  background: transparent;
  cursor: pointer;
  position: relative;
  transition: all 0.2s;
}

.message-checkbox input[type="checkbox"]:checked {
  background: var(--black);
  border-color: var(--black);
}

.message-checkbox input[type="checkbox"]:checked::after {
  content: '';
  position: absolute;
  left: 4px;
  top: 1px;
  width: 4px;
  height: 8px;
  border: solid var(--white);
  border-width: 0 1.5px 1.5px 0;
  transform: rotate(45deg);
}

.message-indicators {
  display: flex;
  align-items: center;
  gap: 6px;
}

.indicator {
  display: flex;
  align-items: center;
  justify-content: center;
}

.indicator svg {
  width: 14px;
  height: 14px;
  opacity: 0.4;
}

.indicator.active svg {
  opacity: 0.75;
}

.indicator.flagged svg {
  opacity: 0.7;
}

.unread-dot {
  width: 6px;
  height: 6px;
  background: var(--black);
  flex-shrink: 0;
}

.message-subject {
  display: flex;
  align-items: center;
  gap: 8px;
  overflow: hidden;
  padding-right: 16px;
}

.message-subject-text {
  font-size: 0.8rem;
  font-weight: 300;
  color: var(--dark-gray);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.message-preview {
  font-size: 0.75rem;
  font-weight: 300;
  color: var(--mid-gray);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  margin-left: 8px;
}

.message-from {
  font-size: 0.8rem;
  font-weight: 300;
  color: var(--dark-gray);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.message-date {
  font-size: 0.75rem;
  font-weight: 400;
  color: var(--mid-gray);
  text-align: right;
}

.message-size {
  font-size: 0.7rem;
  font-weight: 400;
  color: var(--mid-gray);
  text-align: right;
}

.attachment-icon {
  opacity: 0.5;
}

.attachment-icon svg {
  width: 13px;
  height: 13px;
}

/* Pagination */

.pagination {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 20px;
  height: 40px;
  border-top: 1px solid var(--border-light);
  background: var(--off-white);
  flex-shrink: 0;
}

.pagination-info {
  font-size: 0.7rem;
  font-weight: 400;
  color: var(--mid-gray);
}

.pagination-controls {
  display: flex;
  align-items: center;
  gap: 4px;
}

.pagination-btn {
  width: 28px;
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--border-light);
  background: var(--white);
  cursor: pointer;
  transition: border-color 0.2s;
}

.pagination-btn:hover {
  border-color: var(--dark-gray);
}

.pagination-btn.disabled {
  opacity: 0.3;
  pointer-events: none;
}

.pagination-btn svg {
  width: 12px;
  height: 12px;
}

/* --- Message Preview Panel --- */

.preview-panel {
  border-left: 1px solid var(--border-light);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  background: var(--white);
}

.preview-empty {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
}

.preview-empty-text {
  font-family: var(--serif);
  font-style: italic;
  font-size: 1.5rem;
  opacity: 0.4;
}

.preview-toolbar {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 0 20px;
  height: var(--header-height);
  border-bottom: 1px solid var(--border-light);
  flex-shrink: 0;
}

.preview-action {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  font-size: 0.65rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--dark-gray);
  background: none;
  border: none;
  cursor: pointer;
  transition: all 0.2s var(--ease-out);
}

.preview-action:hover {
  color: var(--black);
  background: var(--off-white);
}

.preview-action svg {
  width: 14px;
  height: 14px;
  opacity: 0.7;
}

.preview-action-divider {
  width: 1px;
  height: 20px;
  background: var(--border-light);
  margin: 0 8px;
}

.preview-header {
  padding: 24px 28px;
  border-bottom: 1px solid var(--border-subtle);
  flex-shrink: 0;
}

.preview-subject {
  font-family: var(--serif);
  font-size: 1.35rem;
  font-weight: 400;
  line-height: 1.3;
  margin-bottom: 16px;
}

.preview-meta {
  display: grid;
  grid-template-columns: 60px 1fr;
  gap: 8px 16px;
  font-size: 0.8rem;
}

.preview-meta-label {
  font-size: 0.6rem;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  opacity: 0.55;
  padding-top: 3px;
}

.preview-meta-value {
  font-weight: 300;
  color: var(--dark-gray);
}

.preview-meta-value strong {
  font-weight: 500;
}

.preview-body {
  flex: 1;
  overflow-y: auto;
  padding: 28px;
}

.preview-body-content {
  font-size: 0.875rem;
  line-height: 1.75;
  max-width: 680px;
  color: var(--dark-gray);
}

.preview-body-content p {
  margin-bottom: 1em;
}

.preview-attachments {
  padding: 16px 28px;
  border-top: 1px solid var(--border-subtle);
  flex-shrink: 0;
}

.preview-attachments-label {
  font-size: 0.6rem;
  font-weight: 600;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  opacity: 0.55;
  margin-bottom: 10px;
}

.attachment-item {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 14px;
  border: 1px solid var(--border-light);
  margin-right: 8px;
  margin-bottom: 8px;
  font-size: 0.75rem;
  font-weight: 400;
  color: var(--dark-gray);
  cursor: pointer;
  transition: border-color 0.2s;
}

.attachment-item:hover {
  border-color: var(--dark-gray);
}

.attachment-item svg {
  width: 14px;
  height: 14px;
  opacity: 0.6;
}

.attachment-size {
  opacity: 0.6;
  font-size: 0.65rem;
}

/* --- Compose --- */

.compose-layout {
  display: grid;
  grid-template-columns: 1fr 300px;
  flex: 1;
  overflow: hidden;
}

.compose-main {
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.compose-header-section {
  padding: 20px 28px;
  border-bottom: 1px solid var(--border-subtle);
  flex-shrink: 0;
}

.compose-field {
  display: grid;
  grid-template-columns: 80px 1fr;
  gap: 0;
  align-items: center;
  border-bottom: 1px solid var(--border-subtle);
}

.compose-field:last-child {
  border-bottom: none;
}

.compose-field-label {
  font-size: 0.65rem;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  opacity: 0.65;
  padding: 12px 0;
}

.compose-field-input {
  border: none;
  padding: 12px 0;
  font-size: 0.875rem;
  font-weight: 300;
  background: transparent;
  width: 100%;
}

.compose-field-input:focus {
  outline: none;
}

.compose-subject-input {
  border: none;
  padding: 14px 0;
  font-size: 1.1rem;
  font-weight: 400;
  background: transparent;
  width: 100%;
  font-family: var(--serif);
}

.compose-subject-input:focus {
  outline: none;
}

.compose-body-container {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.compose-editor-toolbar {
  display: flex;
  align-items: center;
  gap: 2px;
  padding: 8px 28px;
  border-bottom: 1px solid var(--border-subtle);
  flex-shrink: 0;
}

.editor-btn {
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: none;
  border: none;
  cursor: pointer;
  color: var(--dark-gray);
  opacity: 0.7;
  transition: opacity 0.2s;
}

.editor-btn:hover {
  opacity: 1;
}

.editor-btn svg {
  width: 16px;
  height: 16px;
}

.editor-separator {
  width: 1px;
  height: 20px;
  background: var(--border-light);
  margin: 0 8px;
}

.compose-textarea {
  flex: 1;
  padding: 24px 28px;
  border: none;
  resize: none;
  font-family: var(--sans);
  font-size: 0.875rem;
  font-weight: 300;
  line-height: 1.75;
  color: var(--dark-gray);
  background: var(--white);
}

.compose-textarea:focus {
  outline: none;
}

.compose-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 28px;
  border-top: 1px solid var(--border-light);
  flex-shrink: 0;
}

.compose-sidebar {
  border-left: 1px solid var(--border-light);
  display: flex;
  flex-direction: column;
  background: var(--off-white);
}

.compose-sidebar-header {
  padding: 16px 20px;
  border-bottom: 1px solid var(--border-light);
}

.compose-sidebar-title {
  font-size: 0.6rem;
  font-weight: 600;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  opacity: 0.65;
}

.compose-sidebar-content {
  flex: 1;
  overflow-y: auto;
  padding: 16px 20px;
}

.compose-sidebar-drop {
  border: 1px dashed var(--border-light);
  padding: 32px 20px;
  text-align: center;
  margin-bottom: 16px;
}

.compose-sidebar-drop-text {
  font-size: 0.75rem;
  font-weight: 400;
  color: var(--mid-gray);
  margin-top: 8px;
}

.compose-sidebar-drop svg {
  width: 24px;
  height: 24px;
  opacity: 0.4;
  margin: 0 auto;
}

/* --- Contacts --- */

.contacts-layout {
  display: grid;
  grid-template-columns: 320px 1fr;
  flex: 1;
  overflow: hidden;
}

.contacts-sidebar {
  border-right: 1px solid var(--border-light);
  display: flex;
  flex-direction: column;
  background: var(--off-white);
  overflow: hidden;
  min-width: 0;
}

.contacts-main {
  display: flex;
  flex-direction: column;
  overflow: hidden;
  min-width: 0;
}

.contact-card {
  padding: 24px 28px;
  border-bottom: 1px solid var(--border-subtle);
  cursor: pointer;
  transition: background 0.15s;
}

.contact-card:hover {
  background: var(--off-white);
}

.contact-card.selected {
  background: #f0f0f0;
}

.contact-name {
  font-size: 0.875rem;
  font-weight: 500;
  margin-bottom: 2px;
}

.contact-email {
  font-size: 0.75rem;
  font-weight: 300;
  color: var(--mid-gray);
}

.contact-detail {
  padding: 32px;
}

.contact-detail-name {
  font-family: var(--serif);
  font-size: 1.75rem;
  font-weight: 400;
  margin-bottom: 4px;
}

.contact-detail-title {
  font-size: 0.8rem;
  font-weight: 300;
  color: var(--mid-gray);
  margin-bottom: 24px;
}

.contact-detail-section {
  margin-bottom: 24px;
}

.contact-detail-section-label {
  font-size: 0.6rem;
  font-weight: 600;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  opacity: 0.55;
  margin-bottom: 12px;
}

.contact-detail-row {
  display: grid;
  grid-template-columns: 100px 1fr;
  gap: 12px;
  padding: 8px 0;
  border-bottom: 1px solid var(--border-subtle);
  font-size: 0.85rem;
}

.contact-detail-row-label {
  font-weight: 400;
  color: var(--dark-gray);
}

.contact-detail-row-value {
  font-weight: 300;
}

/* --- Settings --- */

.settings-layout {
  display: grid;
  grid-template-columns: 220px 1fr;
  flex: 1;
  overflow: hidden;
}

.settings-nav {
  border-right: 1px solid var(--border-light);
  background: var(--off-white);
  padding-top: 8px;
}

.settings-nav-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 11px 24px;
  font-size: 0.8rem;
  font-weight: 400;
  color: var(--dark-gray);
  cursor: pointer;
  transition: all 0.2s;
  border-left: 2px solid transparent;
  text-decoration: none;
}

.settings-nav-item:hover {
  background: rgba(0, 0, 0, 0.03);
}

.settings-nav-item.active {
  font-weight: 500;
  color: var(--black);
  border-left-color: var(--black);
  background: rgba(0, 0, 0, 0.04);
}

.settings-nav-item svg {
  width: 16px;
  height: 16px;
  opacity: 0.6;
}

.settings-nav-item.active svg {
  opacity: 0.85;
}

.settings-content {
  overflow-y: auto;
  padding: 32px 40px;
}

.settings-section {
  margin-bottom: 40px;
  max-width: 700px;
}

.settings-section-title {
  font-family: var(--serif);
  font-size: 1.25rem;
  font-weight: 400;
  margin-bottom: 24px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border-light);
}

/* --- Three Panel Inbox Layout --- */

.inbox-panels {
  display: grid;
  grid-template-columns: minmax(340px, 480px) 1fr;
  flex: 1;
  overflow: hidden;
}

.inbox-panels > * {
  min-width: 0;
  overflow: hidden;
}

/* --- Animations --- */

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes slideUp {
  from {
    opacity: 0;
    transform: translateY(16px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.fade-in {
  animation: fadeIn 0.6s var(--ease-out) forwards;
}

.slide-up {
  animation: slideUp 0.6s var(--ease-out) forwards;
}

.delay-1 { animation-delay: 0.1s; opacity: 0; }
.delay-2 { animation-delay: 0.2s; opacity: 0; }
.delay-3 { animation-delay: 0.3s; opacity: 0; }
.delay-4 { animation-delay: 0.4s; opacity: 0; }
.delay-5 { animation-delay: 0.5s; opacity: 0; }