:root {
  --bg-primary: #0f172a;
  --bg-secondary: #1e293b;
  --bg-card: rgba(30, 41, 59, 0.7);
  --accent-cyan: #06b6d4;
  --accent-purple: #8b5cf6;
  --accent-green: #10b981;
  --accent-red: #ef4444;
  --accent-yellow: #f59e0b;
  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  --border-color: rgba(255, 255, 255, 0.1);
  --font-family: 'Inter', system-ui, -apple-system, sans-serif;
}

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

body {
  background: var(--bg-primary);
  color: var(--text-main);
  font-family: var(--font-family);
  min-height: 100vh;
  padding: 24px;
}

header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 24px;
  background: var(--bg-card);
  backdrop-filter: blur(12px);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  margin-bottom: 24px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 1.5rem;
  font-weight: 700;
  background: linear-gradient(135deg, var(--accent-cyan), var(--accent-purple));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.emergency-btn {
  background: linear-gradient(135deg, #ef4444, #dc2626);
  color: #fff;
  border: none;
  padding: 12px 24px;
  border-radius: 12px;
  font-weight: 700;
  cursor: pointer;
  box-shadow: 0 4px 15px rgba(239, 68, 68, 0.4);
  transition: all 0.2s ease;
}

.emergency-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(239, 68, 68, 0.6);
}

.dashboard-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

.card {
  background: var(--bg-card);
  backdrop-filter: blur(12px);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  padding: 24px;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
  display: flex;
  flex-direction: column;
}

.card h2 {
  font-size: 1.25rem;
  margin-bottom: 16px;
  color: var(--accent-cyan);
  display: flex;
  align-items: center;
  gap: 8px;
}

/* Chatbot Specific UI */
.chat-container {
  display: flex;
  flex-direction: column;
  height: 520px;
}

.chat-box {
  flex: 1;
  overflow-y: auto;
  padding: 16px;
  background: rgba(15, 23, 42, 0.6);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  margin-bottom: 16px;
}

.chat-msg {
  display: flex;
  gap: 12px;
  max-width: 85%;
}

.chat-msg.user {
  align-self: flex-end;
  flex-direction: row-reverse;
}

.chat-msg.bot {
  align-self: flex-start;
}

.msg-avatar {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: bold;
  font-size: 1.1rem;
  flex-shrink: 0;
}

.user .msg-avatar {
  background: linear-gradient(135deg, var(--accent-purple), #c084fc);
  color: #fff;
}

.bot .msg-avatar {
  background: linear-gradient(135deg, var(--accent-cyan), var(--accent-green));
  color: #000;
}

.msg-bubble {
  padding: 12px 16px;
  border-radius: 14px;
  font-size: 0.95rem;
  line-height: 1.5;
  white-space: pre-line;
}

.user .msg-bubble {
  background: var(--accent-purple);
  color: #fff;
  border-bottom-right-radius: 2px;
}

.bot .msg-bubble {
  background: var(--bg-secondary);
  color: var(--text-main);
  border: 1px solid var(--border-color);
  border-bottom-left-radius: 2px;
}

.chat-input-bar {
  display: flex;
  gap: 10px;
}

.chat-input-bar input {
  flex: 1;
  padding: 14px;
  border-radius: 12px;
  border: 1px solid var(--border-color);
  background: var(--bg-secondary);
  color: var(--text-main);
  font-size: 0.95rem;
}

.chat-input-bar input:focus {
  outline: 2px solid var(--accent-cyan);
}

.btn-send {
  padding: 14px 24px;
  border-radius: 12px;
  border: none;
  background: linear-gradient(135deg, var(--accent-cyan), var(--accent-purple));
  color: #fff;
  font-weight: 700;
  cursor: pointer;
  transition: transform 0.2s;
}

.btn-send:hover {
  transform: translateY(-2px);
}

.chip-group {
  display: flex;
  gap: 8px;
  margin-bottom: 12px;
  flex-wrap: wrap;
}

.chip {
  padding: 6px 12px;
  border-radius: 20px;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  color: var(--text-muted);
  font-size: 0.8rem;
  cursor: pointer;
  transition: all 0.2s;
}

.chip:hover {
  background: var(--accent-purple);
  color: #fff;
  border-color: var(--accent-purple);
}

.node-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 16px;
  margin-top: 16px;
}

.node-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 16px;
}

.badge {
  display: inline-block;
  padding: 4px 8px;
  border-radius: 6px;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
}

.badge-idle { background: rgba(16, 185, 129, 0.2); color: var(--accent-green); }
.badge-reserved { background: rgba(245, 158, 11, 0.2); color: var(--accent-yellow); }
.badge-busy { background: rgba(139, 92, 246, 0.2); color: var(--accent-purple); }
.badge-offline { background: rgba(239, 68, 68, 0.2); color: var(--accent-red); }

.task-list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.task-item {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 16px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

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

.btn-sm {
  padding: 6px 12px;
  border-radius: 6px;
  border: none;
  font-size: 0.8rem;
  font-weight: 600;
  cursor: pointer;
}

.btn-approve { background: var(--accent-green); color: #fff; }
.btn-reject { background: var(--accent-red); color: #fff; }