:root {
  --bg-primary: #000000;
  --bg-secondary: #0a0a0f;
  --bg-tertiary: #14141f;
  --bg-card: #1a1a2e;
  --text-primary: #ffffff;
  --text-secondary: #a0a0b0;
  --text-muted: #606070;
  --accent-primary: #00d4ff;
  --accent-secondary: #00ff88;
  --accent-warm: #ff9f43;
  --danger: #ff4466;
  --focus-ring: #00d4ff;
  --focus-glow: rgba(0, 212, 255, 0.4);
  --success: #00ff88;
  --warning: #ffaa00;
  --info: #00b4d8;
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  width: 600px;
  height: 600px;
  overflow: hidden;
}

#app {
  width: 100%;
  height: 100%;
  position: relative;
}

.screen {
  width: 100%;
  height: 100%;
  display: flex;
  flex-direction: column;
  position: absolute;
  top: 0;
  left: 0;
}
.screen.hidden { display: none; }

.header {
  display: flex;
  align-items: center;
  padding: 5px 12px;
  background: var(--bg-secondary);
  gap: 8px;
  flex-shrink: 0;
}
.header h1 {
  font-size: 13px;
  font-weight: 600;
  flex: 1;
}
.header-meta {
  font-size: 11px;
  color: var(--text-secondary);
}
.back-btn {
  background: transparent;
  color: var(--text-primary);
  font-size: 14px;
  padding: 4px 8px;
  border-radius: var(--radius-sm);
  border: 2px solid transparent;
}

.content {
  flex: 1;
  padding: 8px 10px;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.focusable {
  transition: all 0.15s ease;
  border: 2px solid transparent;
  cursor: pointer;
  min-height: 28px;
}
.focusable:focus {
  outline: none;
  border-color: var(--focus-ring);
  box-shadow: 0 0 20px var(--focus-glow);
}

.nav-bar {
  display: flex;
  gap: 6px;
  padding: 5px 10px;
  background: var(--bg-secondary);
  flex-shrink: 0;
}
.nav-item {
  flex: 1;
  padding: 5px 10px;
  background: var(--bg-tertiary);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-size: 11px;
  font-weight: 500;
  text-align: center;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
}
.nav-item:focus { background: var(--bg-card); }
.nav-item.primary {
  background: var(--accent-primary);
  color: #0a0a0f;
}
.nav-item.danger {
  background: var(--danger);
  color: white;
}

.card {
  background: var(--bg-card);
  border-radius: var(--radius-md);
  padding: 16px;
  border: 2px solid transparent;
}
.card:focus {
  border-color: var(--focus-ring);
  box-shadow: 0 0 20px var(--focus-glow);
}
.card-title {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 6px;
}
.card-subtitle {
  font-size: 14px;
  color: var(--text-secondary);
}

.list-container {
  display: flex;
  flex-direction: column;
  gap: 6px;
  overflow-y: auto;
  flex: 1;
}

.message-card {
  background: var(--bg-card);
  border-radius: var(--radius-sm);
  padding: 10px 12px;
  border: 2px solid transparent;
  transition: all 0.2s ease;
}
.message-card:focus {
  border-color: var(--focus-ring);
  box-shadow: 0 0 20px var(--focus-glow);
}
.message-text {
  font-size: 18px;
  line-height: 1.5;
  color: var(--text-primary);
  white-space: pre-wrap;
  word-wrap: break-word;
}
.message-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 6px;
  padding-top: 5px;
  border-top: 1px solid var(--bg-tertiary);
}
.message-time {
  font-size: 10px;
  color: var(--text-muted);
}
.message-type {
  font-size: 10px;
  padding: 1px 6px;
  border-radius: 10px;
  background: var(--bg-tertiary);
  color: var(--text-secondary);
}

.message-card.new-message {
  border-color: var(--accent-secondary);
  background: rgba(0, 255, 136, 0.05);
}

.loading-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 16px;
  padding: 40px;
  flex: 1;
}
.loading-spinner {
  width: 48px;
  height: 48px;
  border: 4px solid var(--bg-tertiary);
  border-top-color: var(--accent-primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }
.loading-text {
  font-size: 16px;
  color: var(--text-secondary);
}

.toast {
  position: fixed;
  bottom: 80px;
  left: 50%;
  transform: translateX(-50%) translateY(100px);
  background: var(--bg-card);
  color: var(--text-primary);
  padding: 12px 24px;
  border-radius: var(--radius-md);
  font-size: 14px;
  border: 1px solid var(--accent-primary);
  transition: transform 0.3s ease;
  z-index: 100;
  pointer-events: none;
}
.toast.visible { transform: translateX(-50%) translateY(0); }
.toast.error { border-color: var(--danger); }
.toast.success { border-color: var(--success); }

.status-connected {
  color: var(--success);
}
.status-disconnected {
  color: var(--danger);
}
.status-reconnecting {
  color: var(--warning);
}

.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 16px;
  padding: 40px;
  text-align: center;
  color: var(--text-muted);
}
.empty-icon {
  font-size: 48px;
  margin-bottom: 8px;
}

.access-denied-icon {
  font-size: 64px;
  margin-bottom: 20px;
  color: var(--danger);
  text-align: center;
  display: block;
}

.access-denied-message {
  font-size: 16px;
  line-height: 1.6;
  text-align: center;
  color: var(--text-secondary);
  padding: 0 10px;
}