/* OpenClaw Session Manager - Styles */
:root {
  --bg-primary: #1a1a2e;
  --bg-secondary: #16213e;
  --bg-tertiary: #0f3460;
  --text-primary: #e0e0e0;
  --text-secondary: #a0a0a0;
  --accent: #e94560;
  --accent-hover: #ff6b81;
  --border: #2a2a4a;
  --success: #4ecca3;
  --warning: #ffc107;
  --danger: #e94560;
  --sidebar-width: 300px;
  --header-height: 60px;
}

[data-theme="light"] {
  --bg-primary: #ffffff;
  --bg-secondary: #f5f5f5;
  --bg-tertiary: #e8e8e8;
  --text-primary: #333333;
  --text-secondary: #666666;
  --accent: #e94560;
  --accent-hover: #ff6b81;
  --border: #dddddd;
}

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

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

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

/* Sidebar */
.sidebar {
  width: var(--sidebar-width);
  background: var(--bg-secondary);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  flex-shrink: 0;
}

.sidebar-header {
  height: var(--header-height);
  padding: 0 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--border);
}

.app-title {
  font-size: 18px;
  font-weight: 700;
  color: var(--accent);
}

.sidebar-content {
  flex: 1;
  overflow-y: auto;
  padding: 12px;
}

.session-section {
  margin-bottom: 16px;
}

.section-header {
  display: flex;
  align-items: center;
  padding: 8px;
  cursor: pointer;
  border-radius: 6px;
  user-select: none;
}

.section-header:hover {
  background: var(--bg-tertiary);
}

.section-title {
  flex: 1;
  font-size: 13px;
  font-weight: 600;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.session-count {
  background: var(--accent);
  color: white;
  font-size: 11px;
  padding: 2px 8px;
  border-radius: 10px;
  margin-right: 8px;
}

.toggle-icon {
  font-size: 10px;
  color: var(--text-secondary);
  transition: transform 0.2s;
}

.section-header.collapsed .toggle-icon {
  transform: rotate(-90deg);
}

.section-content {
  padding: 4px 0;
}

.section-content.collapsed {
  display: none;
}

.session-item {
  display: flex;
  align-items: center;
  padding: 10px 12px;
  border-radius: 8px;
  cursor: pointer;
  transition: background 0.15s;
  margin-bottom: 2px;
}

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

.session-item.active {
  background: var(--accent);
  color: white;
}

.session-icon {
  margin-right: 10px;
  font-size: 16px;
}

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

.session-name {
  font-size: 14px;
  font-weight: 500;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.session-time {
  font-size: 11px;
  color: var(--text-secondary);
  margin-top: 2px;
}

.session-item.active .session-time {
  color: rgba(255,255,255,0.7);
}

.loading, .empty {
  text-align: center;
  padding: 20px;
  color: var(--text-secondary);
  font-size: 13px;
}

/* Chat Area */
.chat-area {
  flex: 1;
  display: flex;
  flex-direction: column;
  min-width: 0;
}

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

.chat-title {
  font-size: 16px;
  font-weight: 600;
}

.header-actions {
  display: flex;
  gap: 8px;
}

.btn {
  padding: 8px 16px;
  border: none;
  border-radius: 6px;
  cursor: pointer;
  font-size: 13px;
  font-weight: 500;
  transition: all 0.15s;
}

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

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

.btn-icon {
  background: transparent;
  color: var(--text-secondary);
  padding: 8px;
  font-size: 16px;
}

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

/* Messages */
.messages-container {
  flex: 1;
  overflow-y: auto;
  padding: 20px;
}

.message {
  display: flex;
  margin-bottom: 16px;
  animation: fadeIn 0.2s;
}

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

.message.user {
  justify-content: flex-end;
}

.message-bubble {
  max-width: 70%;
  padding: 12px 16px;
  border-radius: 12px;
  font-size: 14px;
  line-height: 1.5;
  word-break: break-word;
}

.message.assistant .message-bubble {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
}

.message.user .message-bubble {
  background: var(--accent);
  color: white;
}

.message-role {
  font-size: 11px;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 4px;
}

.message.user .message-role {
  color: rgba(255,255,255,0.7);
}

.message-content {
  white-space: pre-wrap;
}

/* Input Area */
.input-area {
  padding: 16px 20px;
  border-top: 1px solid var(--border);
  background: var(--bg-secondary);
}

.input-wrapper {
  display: flex;
  gap: 12px;
  align-items: flex-end;
}

#messageInput {
  flex: 1;
  background: var(--bg-primary);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 12px 16px;
  color: var(--text-primary);
  font-size: 14px;
  font-family: inherit;
  resize: none;
  max-height: 120px;
  min-height: 44px;
  outline: none;
}

#messageInput:focus {
  border-color: var(--accent);
}

#sendBtn {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: var(--accent);
  color: white;
  border: none;
  cursor: pointer;
  font-size: 18px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

#sendBtn:hover {
  background: var(--accent-hover);
}

/* Welcome Screen */
.welcome-screen {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
}

.welcome-screen h2 {
  font-size: 24px;
  margin-bottom: 12px;
  color: var(--text-primary);
}

.welcome-screen p {
  font-size: 14px;
}

/* Theme Toggle */
#themeToggle {
  position: fixed;
  bottom: 20px;
  right: 20px;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--bg-tertiary);
  border: 1px solid var(--border);
  color: var(--text-primary);
  font-size: 18px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 100;
}

/* Responsive */
@media (max-width: 768px) {
  .sidebar {
    position: fixed;
    left: -100%;
    top: 0;
    height: 100vh;
    z-index: 1000;
    transition: left 0.3s;
  }
  .sidebar.open {
    left: 0;
  }
  .message-bubble {
    max-width: 85%;
  }
}