:root {
  --bg-primary: #12131a;
  --bg-secondary: #1a1c24;
  --bg-tertiary: #0f1015;
  --text-primary: #f3f4f6;
  --text-secondary: #9ca3af;
  --border-color: #2e303a;
  --accent-color: #c084fc;
  --accent-hover: #a855f7;
  --success-color: #34d399;
  --error-color: #f87171;
  --warning-color: #fbbf24;
  --info-color: #60a5fa;
  
  font-family: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
  color: var(--text-primary);
  background-color: var(--bg-primary);
}

body {
  margin: 0;
  padding: 0;
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 100vh;
}

#app {
  width: 100%;
  max-width: 800px;
  padding: 20px;
  box-sizing: border-box;
}

.container {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

h1 {
  font-size: 2.5rem;
  margin: 0;
  letter-spacing: -1px;
}

.subtitle {
  color: var(--text-secondary);
  margin: 0 0 10px 0;
}

strong {
  color: var(--text-primary);
}

.card {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 24px;
  box-shadow: rgba(0, 0, 0, 0.4) 0 10px 15px -3px;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.status-box {
  background-color: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  padding: 12px 16px;
  border-radius: 8px;
  font-size: 1.1rem;
}

.status-disconnected {
  color: var(--error-color);
  font-weight: bold;
}

.status-connecting {
  color: var(--warning-color);
  font-weight: bold;
}

.status-connected {
  color: var(--success-color);
  font-weight: bold;
}

.control-panel {
  display: flex;
  gap: 12px;
}

.btn {
  padding: 12px 24px;
  font-size: 1rem;
  font-weight: 600;
  border: none;
  border-radius: 8px;
  cursor: pointer;
  transition: background-color 0.2s, transform 0.1s;
}

.btn:active {
  transform: scale(0.98);
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none;
}

.btn-primary {
  background-color: var(--accent-color);
  color: #000;
}

.btn-primary:hover:not(:disabled) {
  background-color: var(--accent-hover);
}

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

.btn-secondary:hover:not(:disabled) {
  background-color: #3e414f;
}

.btn-success {
  background-color: var(--success-color);
  color: #000;
}

.btn-success:hover:not(:disabled) {
  background-color: #059669;
}

.message-panel {
  border-top: 1px solid var(--border-color);
  padding-top: 20px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.message-panel h3 {
  margin: 0;
  font-size: 1.2rem;
}

.input-group {
  display: flex;
  gap: 12px;
}

input[type="text"] {
  flex-grow: 1;
  background-color: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 12px 16px;
  color: var(--text-primary);
  font-size: 1rem;
  outline: none;
}

input[type="text"]:focus {
  border-color: var(--accent-color);
}

.log-container {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.log-container h3 {
  margin: 0;
  font-size: 1.2rem;
}

.logs {
  background-color: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  height: 250px;
  padding: 16px;
  overflow-y: auto;
  font-family: 'Courier New', Courier, monospace;
  font-size: 0.9rem;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.log-item {
  line-height: 1.4;
}

.log-time {
  color: #6b7280;
}

.log-info {
  color: var(--text-secondary);
}

.log-success {
  color: var(--success-color);
}

.log-warning {
  color: var(--warning-color);
}

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

.log-outgoing {
  color: #818cf8;
}

.log-incoming {
  color: #fb7185;
}

.btn-clear {
  align-self: flex-end;
  background: none;
  border: none;
  color: var(--text-secondary);
  cursor: pointer;
  font-size: 0.9rem;
  text-decoration: underline;
}

.btn-clear:hover {
  color: var(--text-primary);
}