:root {
  --bg-color: #0f141c;
  --header-bg: #181f2a;
  --border-color: #273142;
  --text-main: #f0f4fc;
  --text-muted: #8b9bb4;
  --accent-color: #f6821f; /* Cloudflare Orange */
  --accent-hover: #ff9a40;
  --status-green: #10b981;
  --status-yellow: #f59e0b;
  --status-red: #ef4444;
  --font-mono: "Fira Code", "JetBrains Mono", Menlo, Monaco, Consolas, "Liberation Mono", monospace;
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

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

html, body {
  width: 100%;
  height: 100%;
  background-color: var(--bg-color);
  color: var(--text-main);
  font-family: var(--font-sans);
  overflow: hidden;
  user-select: none;
}

.app-container {
  display: flex;
  flex-direction: column;
  width: 100vw;
  height: 100vh;
}

.app-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 8px 16px;
  background-color: var(--header-bg);
  border-bottom: 1px solid var(--border-color);
  height: 48px;
  flex-shrink: 0;
}

.header-left, .header-right {
  display: flex;
  align-items: center;
  gap: 12px;
}

.logo {
  font-size: 1.25rem;
}

.title {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-main);
  letter-spacing: -0.2px;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 3px 8px;
  border-radius: 9999px;
  font-size: 0.75rem;
  font-weight: 500;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-color);
}

.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--status-red);
}

.status-connected .status-dot {
  background: var(--status-green);
  box-shadow: 0 0 8px rgba(16, 185, 129, 0.6);
}

.status-connecting .status-dot {
  background: var(--status-yellow);
  box-shadow: 0 0 8px rgba(245, 158, 11, 0.6);
}

.status-disconnected .status-dot {
  background: var(--status-red);
}

.latency-badge {
  color: var(--text-muted);
  font-family: var(--font-mono);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 5px 12px;
  font-size: 0.8rem;
  font-weight: 500;
  border-radius: 6px;
  cursor: pointer;
  border: 1px solid transparent;
  transition: all 0.15s ease;
}

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

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

.btn-secondary {
  background: rgba(255, 255, 255, 0.06);
  color: var(--text-main);
  border-color: var(--border-color);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.12);
}

.config-panel {
  display: none;
  background: #131922;
  border-bottom: 1px solid var(--border-color);
  padding: 12px 16px;
  animation: slideDown 0.2s ease-out;
}

.config-panel.open {
  display: block;
}

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

.config-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: flex-end;
}

.input-group {
  display: flex;
  flex-direction: column;
  gap: 4px;
  flex: 1;
  min-width: 200px;
}

.input-group label {
  font-size: 0.75rem;
  color: var(--text-muted);
  font-weight: 500;
}

.input-group input {
  background: #090c10;
  border: 1px solid var(--border-color);
  border-radius: 6px;
  color: var(--text-main);
  padding: 6px 10px;
  font-size: 0.85rem;
  font-family: var(--font-mono);
  outline: none;
}

.input-group input:focus {
  border-color: var(--accent-color);
}

.input-group.actions {
  flex-direction: row;
  min-width: auto;
}

.terminal-viewport {
  flex: 1;
  position: relative;
  background-color: var(--bg-color);
  overflow: hidden;
  padding: 4px;
}

#terminal {
  width: 100%;
  height: 100%;
}

.xterm {
  height: 100%;
  padding: 4px;
}

.mobile-keys {
  display: none;
  background: var(--header-bg);
  border-top: 1px solid var(--border-color);
  padding: 4px 8px;
  gap: 6px;
  overflow-x: auto;
  flex-shrink: 0;
}

.vkey {
  background: #252f3e;
  border: 1px solid var(--border-color);
  color: #d1d5db;
  border-radius: 4px;
  padding: 6px 12px;
  font-size: 0.8rem;
  font-family: var(--font-mono);
  cursor: pointer;
  white-space: nowrap;
}

.vkey:active {
  background: var(--accent-color);
  color: #fff;
}

@media (max-width: 768px) {
  .title {
    display: none;
  }
  .mobile-keys {
    display: flex;
  }
}