@import url('../shared/theme.css');

:root {
  --bg-primary: #0e0e14;
  --bg-secondary: #17171f;
  --bg-tertiary: #22222c;
  --bg-hover: #2c2c38;
  --border-color: #3a3a48;
  /* High-contrast text (do not use faint gray for body copy) */
  --text-primary: #f4f4f8;
  --text-secondary: #d0d0dc;
  --text-muted: #a8a8b8;
  --accent-primary: #2dd4bf;
  --accent-primary-hover: #5eead4;
  --accent-secondary: #7dd3fc;
  --success: #4ade80;
  --warning: #fbbf24;
  --error: #fb7185;
  --online: #4ade80;
  --away: #fbbf24;
  --offline: #8b8b9a;
  --input-bg: #1c1c26;
  --input-border: #4a4a5a;
}

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

html, body {
  height: 100%;
  overflow: hidden;
}

body {
  font-family: var(--font);
  background:
    radial-gradient(900px 400px at 0% 0%, rgba(45, 212, 191, 0.1), transparent 50%),
    radial-gradient(700px 360px at 100% 0%, rgba(125, 211, 252, 0.08), transparent 55%),
    var(--bg-primary);
  color: var(--text-primary);
  font-size: 15px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

.hidden { display: none !important; }

.bs-back-link {
  position: fixed;
  top: 0.45rem;
  left: 0.65rem;
  z-index: 60;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-muted);
  text-decoration: none;
  padding: 0.2rem 0.45rem;
  border-radius: 6px;
  background: rgba(12, 12, 16, 0.55);
  backdrop-filter: blur(6px);
}
.bs-back-link:hover { color: var(--accent-primary); }

.mobile-bar {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 44px;
  z-index: 55;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
  padding: 0 0.5rem;
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border-color);
}
.mobile-title {
  font-weight: 700;
  font-family: var(--font-display, var(--font));
  color: var(--accent-secondary);
  font-size: 0.95rem;
}
.drawer-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.55);
  z-index: 70;
}
.drawer-backdrop.hidden { display: none !important; }

.app-container {
  display: grid;
  grid-template-columns: 240px 1fr 220px;
  height: 100vh;
  width: 100vw;
  overflow: hidden;
  padding-bottom: 32px;
}

.sidebar, .right-sidebar {
  background: var(--bg-secondary);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  min-width: 0;
}

.sidebar {
  border-right: 1px solid var(--border-color);
}

.right-sidebar {
  border-left: 1px solid var(--border-color);
}

.sidebar-header {
  padding: 0.75rem 1rem;
  border-bottom: 1px solid var(--border-color);
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
}

.sidebar-header h2 {
  font-size: 1rem;
  color: var(--accent-secondary);
}

.btn-leave {
  font-size: 0.7rem !important;
  font-weight: 700;
  letter-spacing: 0.02em;
  padding: 0.25rem 0.5rem !important;
  width: auto !important;
  height: auto !important;
  border: 1px solid var(--border-color);
  border-radius: 6px;
  color: var(--text-secondary);
}
.btn-leave:hover:not(:disabled) {
  border-color: var(--error);
  color: var(--error);
}
.btn-leave:disabled { opacity: 0.4; cursor: not-allowed; }

.user-profile {
  padding: 0.75rem;
  display: flex;
  gap: 0.5rem;
  border-bottom: 1px solid var(--border-color);
  flex-shrink: 0;
}

.avatar {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--accent-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  font-weight: 600;
  flex-shrink: 0;
  cursor: pointer;
  transition: transform 0.15s;
}

.avatar:hover {
  transform: scale(1.05);
}

.user-info {
  flex: 1;
  min-width: 0;
}

.user-info input {
  width: 100%;
  background: var(--input-bg);
  border: 1px solid var(--input-border);
  border-radius: 6px;
  padding: 0.4rem 0.6rem;
  color: var(--text-primary);
  font-size: 0.95rem;
  font-weight: 500;
}

.user-info input:focus {
  outline: none;
  border-color: var(--accent-primary);
}

.public-key {
  font-size: 0.72rem;
  color: var(--text-secondary);
  margin-top: 0.3rem;
  cursor: pointer;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  font-family: var(--font-mono, ui-monospace, monospace);
}

.public-key:hover {
  color: var(--accent-secondary);
}

.section-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.75rem 1rem;
}

.section-header h3 {
  font-size: 0.78rem;
  text-transform: uppercase;
  color: var(--text-secondary);
  font-weight: 700;
  letter-spacing: 0.05em;
}

.btn-icon {
  width: 24px;
  height: 24px;
  border: none;
  background: var(--bg-tertiary);
  color: var(--text-secondary);
  border-radius: 4px;
  cursor: pointer;
  font-size: 0.9rem;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.15s;
}

.btn-icon:hover {
  background: var(--accent-primary);
  color: white;
}

.rooms-section, .users-section {
  flex: 1;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  min-height: 0;
}

.room-list, .user-list {
  list-style: none;
  overflow-y: auto;
  overflow-x: hidden;
  flex: 1;
  min-height: 0;
}

.room {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.6rem 1rem;
  cursor: pointer;
  transition: background 0.15s;
  color: var(--text-primary);
  font-weight: 500;
}

.room:hover {
  background: var(--bg-hover);
}

.room.active {
  background: var(--accent-primary);
  color: #0a0a10;
  font-weight: 700;
}

.room-icon {
  color: var(--text-secondary);
}

.room.active .room-icon {
  color: #0a0a10;
}

.room-name {
  flex: 1;
}

.room-count {
  font-size: 0.75rem;
  background: var(--bg-tertiary);
  color: var(--text-secondary);
  padding: 0.1rem 0.4rem;
  border-radius: 10px;
  font-weight: 600;
}

.room.active .room-count {
  background: rgba(10, 10, 16, 0.22);
  color: #0a0a10;
}

.user-item {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.5rem 1rem;
  transition: background 0.15s;
}

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

.user-item .avatar {
  width: 32px;
  height: 32px;
  font-size: 0.9rem;
}

.user-name {
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  color: var(--text-primary);
  font-weight: 500;
}

.user-status {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  flex-shrink: 0;
}

.user-status.online { background: var(--online); }
.user-status.away { background: var(--away); }
.user-status.offline { background: var(--offline); }

.chat-area {
  display: flex;
  flex-direction: column;
  background: var(--bg-primary);
  min-width: 0;
  overflow: hidden;
}

.chat-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.75rem 1rem;
  border-bottom: 1px solid var(--border-color);
  background: var(--bg-secondary);
  flex-shrink: 0;
}

.chat-info h2 {
  font-size: 1.2rem;
  color: var(--text-primary);
  font-weight: 700;
}

.room-topic {
  font-size: 0.85rem;
  color: var(--text-secondary);
  font-weight: 500;
}

.chat-actions {
  display: flex;
  gap: 0.5rem;
}

.messages {
  flex: 1;
  overflow-y: auto;
  overflow-x: hidden;
  padding: 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  min-height: 0;
}

.message {
  display: flex;
  gap: 0.75rem;
  padding: 0.5rem;
  border-radius: 8px;
  transition: background 0.15s;
}

.message:hover {
  background: var(--bg-secondary);
}

.message.own {
  flex-direction: row-reverse;
}

.message .avatar {
  width: 36px;
  height: 36px;
  font-size: 0.9rem;
  flex-shrink: 0;
}

.message-content {
  flex: 1;
  min-width: 0;
}

.message-header {
  display: flex;
  align-items: baseline;
  gap: 0.5rem;
  margin-bottom: 0.2rem;
}

.message.own .message-header {
  flex-direction: row-reverse;
}

.message-author {
  font-weight: 700;
  color: #7dd3fc;
}

.message.own .message-author {
  color: #5eead4;
}

.message-time {
  font-size: 0.75rem;
  color: var(--text-muted);
  font-weight: 500;
}

.message-text {
  word-wrap: break-word;
  line-height: 1.6;
  color: var(--text-primary);
  font-size: 0.98rem;
}

/* Markdown styling */
.message-text p {
  margin-bottom: 0.5rem;
}

.message-text p:last-child {
  margin-bottom: 0;
}

.message-text code {
  background: var(--bg-tertiary);
  padding: 0.1rem 0.4rem;
  border-radius: 4px;
  font-family: 'SF Mono', Monaco, 'Courier New', monospace;
  font-size: 0.9em;
}

.message-text pre {
  background: var(--bg-tertiary);
  border-radius: 8px;
  padding: 0.75rem;
  overflow-x: auto;
  margin: 0.5rem 0;
}

.message-text pre code {
  background: none;
  padding: 0;
  font-family: 'SF Mono', Monaco, 'Courier New', monospace;
  font-size: 0.9em;
}

/* Fallback syntax colors if highlight.js fails to load */
.message-text .hljs {
  background: var(--bg-tertiary);
  color: #abb2bf;
}

.message-text .hljs-keyword { color: #c678dd; }
.message-text .hljs-string { color: #98c379; }
.message-text .hljs-number { color: #d19a66; }
.message-text .hljs-function { color: #61afef; }
.message-text .hljs-comment { color: #9aa0ad; font-style: italic; }
.message-text .hljs-class { color: #e5c07b; }
.message-text .hljs-variable { color: #e06c75; }
.message-text .hljs-built_in { color: #e5c07b; }
.message-text .hljs-literal { color: #56b6c2; }
.message-text .hljs-attr { color: #d19a66; }
.message-text .hljs-property { color: #e06c75; }
.message-text .hljs-title { color: #61afef; }
.message-text .hljs-params { color: #abb2bf; }
.message-text .hljs-bullet { color: #e5c07b; }
.message-text .hljs-code { color: #98c379; }
.message-text .hljs-addition { color: #98c379; background-color: #2d4a3e; }
.message-text .hljs-deletion { color: #e06c75; background-color: #4a2d2d; }

.message-text blockquote {
  border-left: 3px solid var(--accent-primary);
  padding-left: 0.75rem;
  margin: 0.5rem 0;
  color: var(--text-secondary);
}

.message-text ul, .message-text ol {
  margin: 0.5rem 0;
  padding-left: 1.5rem;
}

.message-text li {
  margin: 0.25rem 0;
}

.message-text a {
  color: var(--accent-secondary);
  text-decoration: none;
}

.message-text a:hover {
  text-decoration: underline;
}

.message-text img {
  max-width: 100%;
  border-radius: 8px;
  margin: 0.5rem 0;
}

.message-text table {
  width: 100%;
  border-collapse: collapse;
  margin: 0.5rem 0;
}

.message-text th, .message-text td {
  border: 1px solid var(--border-color);
  padding: 0.4rem 0.6rem;
  text-align: left;
}

.message-text th {
  background: var(--bg-tertiary);
}

.message-text hr {
  border: none;
  border-top: 1px solid var(--border-color);
  margin: 0.75rem 0;
}

.message-text input[type="checkbox"] {
  margin-right: 0.5rem;
}

.message-file {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  background: var(--bg-tertiary);
  padding: 0.75rem;
  border-radius: 8px;
  margin-top: 0.5rem;
}

.message-file .file-icon {
  font-size: 1.75rem;
}

.message-file .file-info {
  flex: 1;
  min-width: 0;
}

.message-file .file-name {
  font-weight: 500;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.message-file .file-size {
  font-size: 0.75rem;
  color: var(--text-muted);
}

.btn-download {
  background: var(--accent-primary);
  color: white;
  border: none;
  padding: 0.35rem 0.75rem;
  border-radius: 6px;
  cursor: pointer;
  font-size: 0.8rem;
  font-weight: 500;
  transition: background 0.15s;
  margin-left: auto;
}

.btn-download:hover {
  background: var(--accent-primary-hover);
}

.typing-indicator {
  padding: 0.5rem 1rem;
  font-size: 0.85rem;
  color: var(--text-secondary);
  font-style: italic;
  font-weight: 500;
  display: none;
  flex-shrink: 0;
}

.typing-indicator.active {
  display: block;
}

.compose-area {
  padding: 0.75rem 1rem;
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-color);
  flex-shrink: 0;
}

.compose-tools {
  display: flex;
  gap: 0.25rem;
  margin-bottom: 0.5rem;
  flex-wrap: wrap;
}

.btn-tool {
  width: 28px;
  height: 28px;
  border: none;
  background: var(--bg-tertiary);
  color: var(--text-secondary);
  border-radius: 4px;
  cursor: pointer;
  font-size: 0.85rem;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.15s;
}

.btn-tool:hover {
  background: var(--bg-hover);
  color: var(--text-primary);
}

.btn-tool:active {
  background: var(--accent-primary);
  color: white;
}

.empty-state, .empty-hint {
  color: var(--text-secondary);
  font-size: 0.9rem;
  text-align: center;
  padding: 1.5rem 1rem;
  line-height: 1.45;
}
.empty-hint {
  list-style: none;
  text-align: left;
  padding: 0.5rem 0.25rem;
}

.file-attachment {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  padding: 0.65rem 0.75rem;
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  margin-top: 0.25rem;
}
.file-attachment .muted { color: var(--text-muted); font-size: 0.8rem; }
.btn-download {
  margin-left: auto;
  border: 1px solid var(--accent-border, rgba(45, 212, 191, 0.35));
  background: var(--accent-dim, rgba(45, 212, 191, 0.12));
  color: var(--accent-primary);
  border-radius: 6px;
  padding: 0.35rem 0.65rem;
  font-size: 0.75rem;
  font-weight: 600;
  cursor: pointer;
}
.btn-download:hover { filter: brightness(1.08); }

.file-item .file-meta {
  display: block;
  font-size: 0.7rem;
  color: var(--text-muted);
}

.status.error { color: var(--error); }

.compose-input {
  position: relative;
  display: flex;
  align-items: flex-end;
  gap: 0.5rem;
}

.compose-input textarea {
  flex: 1;
  min-width: 0;
  background: var(--input-bg);
  border: 1px solid var(--input-border);
  border-radius: 8px;
  padding: 0.65rem 0.8rem;
  color: var(--text-primary);
  font-size: 1rem;
  line-height: 1.45;
  resize: none;
  font-family: inherit;
  font-weight: 450;
}

.compose-input textarea::placeholder {
  color: #9a9aac;
  opacity: 1;
}

.compose-input textarea:focus {
  outline: none;
  border-color: var(--accent-primary);
  box-shadow: 0 0 0 2px rgba(45, 212, 191, 0.18);
}

.compose-input textarea:disabled {
  opacity: 0.55;
  cursor: not-allowed;
}

.btn-tool:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

.btn-send {
  background: var(--accent-primary);
  color: white;
  border: none;
  padding: 0.6rem 1.2rem;
  border-radius: 8px;
  cursor: pointer;
  font-weight: 600;
  transition: background 0.15s;
}

.btn-send:hover {
  background: var(--accent-primary-hover);
}

.btn-send:disabled {
  background: var(--bg-tertiary);
  color: var(--text-muted);
  cursor: not-allowed;
}

.sidebar-section {
  padding: 1rem;
  border-bottom: 1px solid var(--border-color);
}

.sidebar-section h3 {
  font-size: 0.78rem;
  text-transform: uppercase;
  color: var(--text-secondary);
  font-weight: 700;
  letter-spacing: 0.04em;
  margin-bottom: 0.75rem;
}

.info-item {
  display: flex;
  justify-content: space-between;
  font-size: 0.9rem;
  margin-bottom: 0.5rem;
  color: var(--text-primary);
  font-weight: 500;
}

.info-item .label {
  color: var(--text-secondary);
  font-weight: 600;
}

.file-list {
  list-style: none;
  max-height: 200px;
  overflow-y: auto;
}

.file-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem;
  font-size: 0.85rem;
  cursor: pointer;
  border-radius: 6px;
  transition: background 0.15s;
}

.file-item:hover {
  background: var(--bg-hover);
  color: var(--accent-secondary);
}

.file-item .file-icon {
  font-size: 1.2rem;
}

.file-item .file-name {
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.setting-item {
  margin-bottom: 0.5rem;
}

.setting-item label {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.9rem;
  color: var(--text-primary);
  font-weight: 500;
  cursor: pointer;
}

.setting-item input[type="checkbox"] {
  width: 16px;
  height: 16px;
  accent-color: var(--accent-primary);
}

.modal {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0,0,0,0.7);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
}

.modal.hidden {
  display: none;
}

.modal-content {
  background: var(--bg-secondary);
  border-radius: 12px;
  padding: 1.5rem;
  width: 100%;
  max-width: 400px;
  animation: modalIn 0.2s ease;
}

@keyframes modalIn {
  from {
    opacity: 0;
    transform: scale(0.95);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

.modal-content h3 {
  margin-bottom: 0.5rem;
}

.modal-hint {
  font-size: 0.88rem;
  color: var(--text-secondary);
  margin-bottom: 0.85rem;
  line-height: 1.45;
}
.join-error {
  color: var(--error) !important;
  background: rgba(251, 113, 133, 0.1);
  border: 1px solid rgba(251, 113, 133, 0.3);
  border-radius: 6px;
  padding: 0.5rem 0.65rem;
}

.modal-content input {
  width: 100%;
  background: var(--input-bg);
  border: 1px solid var(--input-border);
  border-radius: 6px;
  padding: 0.65rem 0.75rem;
  color: var(--text-primary);
  font-size: 1rem;
  font-weight: 500;
  margin-bottom: 0.75rem;
}

.modal-content input::placeholder {
  color: #9a9aac;
  opacity: 1;
}

.modal-content input:focus {
  outline: none;
  border-color: var(--accent-primary);
  box-shadow: 0 0 0 2px rgba(45, 212, 191, 0.18);
}

.form-group {
  margin-bottom: 1rem;
}

.form-group label {
  display: block;
  font-size: 0.88rem;
  color: var(--text-secondary);
  font-weight: 600;
  margin-bottom: 0.35rem;
}

.modal-actions {
  display: flex;
  gap: 0.5rem;
  justify-content: flex-end;
  margin-top: 1rem;
}

.btn {
  padding: 0.5rem 1rem;
  border-radius: 6px;
  cursor: pointer;
  font-weight: 500;
  border: none;
  transition: all 0.15s;
}

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

.btn.primary:hover {
  background: var(--accent-primary-hover);
}

.btn.secondary {
  background: var(--bg-tertiary);
  color: var(--text-primary);
}

.btn.secondary:hover {
  background: var(--bg-hover);
}

.toast-container {
  position: fixed;
  bottom: 2.5rem;
  right: 1rem;
  z-index: 1001;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.toast {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 0.75rem 1rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  animation: slideIn 0.3s ease;
  box-shadow: 0 4px 12px rgba(0,0,0,0.3);
}

.toast.success { border-left: 3px solid var(--success); }
.toast.error { border-left: 3px solid var(--error); }
.toast.info { border-left: 3px solid var(--accent-secondary); }

@keyframes slideIn {
  from {
    transform: translateX(100%);
    opacity: 0;
  }
  to {
    transform: translateX(0);
    opacity: 1;
  }
}

.status-bar {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-color);
  padding: 0.5rem 1rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.8rem;
  z-index: 100;
}

.status {
  color: var(--text-secondary);
  font-weight: 500;
}

.connection-status {
  color: var(--offline);
}

.connection-status.connected {
  color: var(--online);
}

.connection-status.connecting {
  color: var(--away);
}

.message.system-message {
  display: block;
  text-align: center;
  color: var(--text-secondary);
  font-size: 0.85rem;
  font-weight: 500;
  padding: 0.55rem;
  background: transparent;
}

.emoji-picker {
  position: absolute;
  bottom: 100%;
  left: 0;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 0.5rem;
  display: grid;
  grid-template-columns: repeat(8, 1fr);
  gap: 0.25rem;
  max-height: 250px;
  overflow-y: auto;
  z-index: 1000;
  box-shadow: 0 -4px 20px rgba(0,0,0,0.4);
  margin-bottom: 0.5rem;
}

.emoji {
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  border-radius: 6px;
  font-size: 1.25rem;
  transition: transform 0.1s, background 0.1s;
  border: none;
  background: transparent;
  padding: 0;
  color: inherit;
}

.emoji:hover {
  background: var(--bg-hover);
  transform: scale(1.2);
}

textarea {
  field-sizing: content;
  min-height: 40px;
  max-height: 120px;
}

/* Scrollbar styling */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: var(--bg-primary);
}

::-webkit-scrollbar-thumb {
  background: var(--bg-tertiary);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--bg-hover);
}

/* Highlight.js theme adjustments */
.hljs {
  background: transparent !important;
  padding: 0 !important;
}

@media (max-width: 1100px) {
  .app-container {
    grid-template-columns: 220px 1fr 200px;
  }
}

@media (max-width: 900px) {
  .mobile-bar { display: flex; }
  .bs-back-link { top: 3.15rem; }
  .app-container {
    grid-template-columns: 1fr;
    padding-top: 44px;
  }
  .sidebar,
  .right-sidebar {
    display: none;
    position: fixed;
    top: 44px;
    bottom: 32px;
    width: min(300px, 86vw);
    z-index: 80;
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.45);
  }
  .sidebar { left: 0; border-right: 1px solid var(--border-color); }
  .right-sidebar { right: 0; border-left: 1px solid var(--border-color); }
  .app-container.drawer-left .sidebar { display: flex; }
  .app-container.drawer-right .right-sidebar { display: flex; }
  .user-profile .avatar {
    width: 36px;
    height: 36px;
    font-size: 1rem;
  }
}

@media (max-height: 600px) {
  .sidebar-header {
    padding: 0.5rem;
  }
  .sidebar-header h2 {
    font-size: 0.9rem;
  }
  .user-profile {
    padding: 0.5rem;
  }
  .user-profile .avatar {
    width: 32px;
    height: 32px;
  }
  .compose-area {
    padding: 0.5rem;
  }
  .messages {
    padding: 0.5rem;
  }
}