:root {
  --bg-color: #f5f5f5;
  --sidebar-bg: #e7e7e7;
  --sidebar-hover: #d6d6d6;
  --sidebar-active: #c6c6c6;
  --chat-bg: #f5f5f5;
  --message-bg-user: #95ec69;
  --message-bg-other: #ffffff;
  --text-color: #000000;
  --border-color: #dcdcdc;
}

body {
  margin: 0;
  padding: 0;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  background-color: var(--bg-color);
  color: var(--text-color);
  height: 100vh;
  overflow: hidden;
}

#root {
  height: 100%;
  display: flex;
}

.app-container {
  display: flex;
  width: 100%;
  height: 100%;
}

.sidebar {
  background-color: var(--sidebar-bg);
  border-right: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
  height: 100%;
  flex-shrink: 0;
  /* Prevent shrinking */
}

.sidebar-header {
  padding: 10px;
  border-bottom: 1px solid var(--border-color);
  -webkit-app-region: drag;
}

.sidebar-footer {
  padding: 10px;
  border-top: 1px solid var(--border-color);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 14px;
}

.sidebar-btn {
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 5px;
  color: #666;
}

.sidebar-btn:hover {
  color: #333;
}

.sidebar-status {
  color: #07c160;
  font-size: 12px;
}

.search-input {
  width: 100%;
  padding: 5px;
  border-radius: 4px;
  border: 1px solid #ccc;
  -webkit-app-region: no-drag;
}

.date-range-selector {
  display: flex;
  gap: 5px;
  margin-top: 8px;
  justify-content: space-between;
}

.range-btn {
  padding: 2px 6px;
  font-size: 10px;
  border: 1px solid #ccc;
  border-radius: 10px;
  background: #fff;
  cursor: pointer;
  color: #666;
  flex: 1;
  text-align: center;
}

.range-btn.active {
  background: #07c160;
  color: #fff;
  border-color: #07c160;
}

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

.section-header {
  padding: 8px 10px;
  background-color: #f0f0f0;
  font-size: 12px;
  color: #666;
  font-weight: bold;
  cursor: pointer;
  display: flex;
  align-items: center;
  user-select: none;
}

.section-header:hover {
  background-color: #e0e0e0;
}

.section-header .arrow {
  margin-right: 5px;
  font-size: 10px;
  width: 12px;
}

.contact-item {
  padding: 10px;
  display: flex;
  align-items: center;
  cursor: pointer;
}

.contact-item:hover {
  background-color: var(--sidebar-hover);
}

.contact-item.active {
  background-color: var(--sidebar-active);
}

.contact-avatar {
  width: 40px;
  height: 40px;
  border-radius: 4px;
  background-color: #ccc;
  margin-right: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  color: #fff;
}

.contact-info {
  flex: 1;
  overflow: hidden;
}

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

.resizer {
  width: 5px;
  cursor: col-resize;
  background-color: transparent;
  border-right: 1px solid transparent;
  transition: background-color 0.2s;
  z-index: 10;
}

.resizer:hover,
.resizer:active {
  background-color: var(--border-color);
}

.chat-window {
  flex: 1;
  display: flex;
  flex-direction: column;
  background-color: var(--chat-bg);
  min-width: 0;
  /* Allow flex item to shrink below content size */
}

.chat-header {
  height: 50px;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  padding: 0 20px;
  font-weight: bold;
  font-size: 16px;
  -webkit-app-region: drag;
}

.message-list {
  flex: 1;
  overflow-y: auto;
  padding: 0;
  display: flex;
  flex-direction: column;
}

.chat-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
}

.chat-table th {
  text-align: left;
  padding: 8px;
  border-bottom: 1px solid var(--border-color);
  background-color: #f9f9f9;
  color: #666;
  font-weight: normal;
  position: sticky;
  top: 0;
  z-index: 1;
  position: relative;
  /* For resizer positioning */
}

.column-resizer {
  position: absolute;
  right: 0;
  top: 0;
  bottom: 0;
  width: 5px;
  cursor: col-resize;
  z-index: 2;
}

.column-resizer:hover {
  background-color: #ccc;
}

.chat-table td {
  padding: 8px;
  border-bottom: 1px solid #eee;
  vertical-align: top;
  color: #333;
}

.chat-table tr:hover {
  background-color: #f0f0f0;
}

.col-sender {
  width: 80px;
}

.col-type {
  width: 80px;
}

.col-time {
  width: 150px;
}

.col-content {}

.chat-toolbar {
  padding: 10px;
  border-top: 1px solid var(--border-color);
  display: flex;
  gap: 10px;
  background-color: #fff;
  flex-wrap: wrap;
}

.toolbar-btn {
  padding: 4px 12px;
  border: 1px solid #dcdcdc;
  border-radius: 4px;
  background-color: #fff;
  font-size: 12px;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 4px;
}

.toolbar-btn:hover {
  background-color: #f5f5f5;
}

.empty-state {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 100%;
  color: #999;
}

.login-modal {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: rgba(0, 0, 0, 0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
}

.login-box {
  background-color: #fff;
  padding: 20px;
  border-radius: 8px;
  width: 300px;
  text-align: center;
}

.login-input {
  width: 100%;
  padding: 8px;
  margin: 10px 0;
  border: 1px solid #ccc;
  border-radius: 4px;
}

.login-btn {
  background-color: #07c160;
  color: #fff;
  border: none;
  padding: 8px 20px;
  border-radius: 4px;
  cursor: pointer;
}

.login-btn:hover {
  background-color: #06ad56;
}

.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: rgba(0, 0, 0, 0.5);
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 1000;
}

.modal-content {
  background: white;
  padding: 20px;
  border-radius: 8px;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
  min-width: 400px;
  max-width: 90vw;
  max-height: 90vh;
  overflow: auto;
}

.image-preview-modal {
  background: transparent;
  box-shadow: none;
  padding: 0;
}