:root {
  --bg-primary: #0b0f19;
  --bg-secondary: #111827;
  --bg-card: rgba(17, 24, 39, 0.75);
  --border-color: rgba(255, 255, 255, 0.08);
  --border-focus: #f6821f;
  --text-primary: #f9fafb;
  --text-secondary: #9ca3af;
  --text-muted: #6b7280;
  --accent-cf: #f6821f;
  --accent-cf-hover: #fa973e;
  --accent-blue: #3b82f6;
  --success: #10b981;
  --danger: #ef4444;
  --warning: #f59e0b;
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
}

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

body {
  background-color: var(--bg-primary);
  color: var(--text-primary);
  font-family: var(--font-sans);
  min-height: 100vh;
  line-height: 1.5;
  background-image: 
    radial-gradient(circle at 10% 20%, rgba(246, 130, 31, 0.07) 0%, transparent 40%),
    radial-gradient(circle at 90% 80%, rgba(59, 130, 246, 0.06) 0%, transparent 40%);
}

.layout {
  max-width: 1140px;
  margin: 0 auto;
  padding: 2rem 1.5rem;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

/* Header */
.header {
  margin-bottom: 2rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--border-color);
}

.header-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
}

.brand {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.logo-badge {
  background: linear-gradient(135deg, var(--accent-cf) 0%, #fa541c 100%);
  color: white;
  font-weight: 700;
  font-size: 1.25rem;
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-md);
  box-shadow: 0 4px 14px rgba(246, 130, 31, 0.35);
}

h1 {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -0.02em;
}

.subtitle {
  font-size: 0.85rem;
  color: var(--text-secondary);
}

.status-indicator {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--bg-secondary);
  padding: 0.4rem 0.85rem;
  border-radius: 9999px;
  border: 1px solid var(--border-color);
  font-size: 0.8rem;
  font-weight: 500;
}

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

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

.status-dot.offline {
  background: var(--danger);
  box-shadow: 0 0 8px rgba(239, 68, 68, 0.6);
}

/* Cards */
.card {
  background: var(--bg-card);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.25);
  margin-bottom: 1.5rem;
}

.card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.25rem;
}

.card-header h2 {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text-primary);
}

.badge {
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 0.25rem 0.6rem;
  border-radius: var(--radius-sm);
}

.badge.info { background: rgba(59, 130, 246, 0.15); color: #93c5fd; }
.badge.accent { background: rgba(246, 130, 31, 0.15); color: #fdba74; }
.badge.success { background: rgba(16, 185, 129, 0.15); color: #6ee7b7; }

/* Config Form */
.config-form label {
  display: block;
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-bottom: 0.5rem;
}

.input-group {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.input-group input {
  flex: 1;
  min-width: 280px;
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  padding: 0.65rem 0.85rem;
  color: var(--text-primary);
  font-family: var(--font-mono);
  font-size: 0.85rem;
  transition: border-color 0.2s;
}

.input-group input:focus {
  outline: none;
  border-color: var(--border-focus);
}

.helper-text {
  display: block;
  margin-top: 0.5rem;
  font-size: 0.75rem;
  color: var(--text-muted);
}

/* Dashboard Grid */
.dashboard-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 1.5rem;
  margin-bottom: 1.5rem;
}

/* Counter Card */
.counter-display {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 1.5rem 0;
  background: var(--bg-secondary);
  border-radius: var(--radius-md);
  margin-bottom: 1.25rem;
  border: 1px solid var(--border-color);
}

.counter-label {
  font-size: 0.8rem;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.counter-value {
  font-size: 3.5rem;
  font-weight: 700;
  color: var(--text-primary);
  font-family: var(--font-mono);
  line-height: 1.1;
  margin: 0.35rem 0;
}

.counter-meta {
  font-size: 0.75rem;
  color: var(--text-muted);
}

.counter-actions {
  display: flex;
  gap: 0.5rem;
}

.counter-actions .btn {
  flex: 1;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  font-family: var(--font-sans);
  font-size: 0.85rem;
  font-weight: 600;
  padding: 0.65rem 1rem;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  cursor: pointer;
  transition: all 0.2s ease;
}

.btn.primary {
  background: var(--accent-cf);
  color: white;
}
.btn.primary:hover {
  background: var(--accent-cf-hover);
  box-shadow: 0 4px 12px rgba(246, 130, 31, 0.3);
}

.btn.secondary {
  background: var(--bg-secondary);
  color: var(--text-primary);
  border-color: var(--border-color);
}
.btn.secondary:hover {
  border-color: rgba(255, 255, 255, 0.2);
  background: #1f2937;
}

.btn.danger {
  background: rgba(239, 68, 68, 0.15);
  color: #fca5a5;
  border-color: rgba(239, 68, 68, 0.3);
}
.btn.danger:hover {
  background: rgba(239, 68, 68, 0.25);
}

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

.btn.small {
  padding: 0.35rem 0.65rem;
  font-size: 0.75rem;
}

/* Diagnostics Card */
.metrics-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.75rem;
  margin-bottom: 1.25rem;
}

.metric-item {
  background: var(--bg-secondary);
  padding: 0.75rem 1rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
}

.metric-title {
  font-size: 0.75rem;
  color: var(--text-muted);
}

.metric-data {
  font-size: 1rem;
  font-weight: 600;
  font-family: var(--font-mono);
  color: var(--text-primary);
  margin-top: 0.2rem;
}

.curl-box {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 0.75rem 1rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.curl-header {
  font-size: 0.75rem;
  color: var(--text-muted);
  white-space: nowrap;
}

.curl-box code {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: #93c5fd;
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.btn-copy {
  background: rgba(255, 255, 255, 0.08);
  border: none;
  color: var(--text-secondary);
  padding: 0.25rem 0.5rem;
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-size: 0.75rem;
}
.btn-copy:hover {
  background: rgba(255, 255, 255, 0.16);
  color: var(--text-primary);
}

/* Event Log */
.log-card {
  margin-bottom: 1rem;
}

.log-container {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 0.75rem 1rem;
  height: 180px;
  overflow-y: auto;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.log-entry {
  padding: 0.15rem 0;
  word-break: break-all;
}

.log-entry.info { color: var(--text-secondary); }
.log-entry.success { color: #6ee7b7; }
.log-entry.error { color: #fca5a5; }
.log-entry.warn { color: #fde047; }

/* Footer */
.footer {
  margin-top: auto;
  padding-top: 2rem;
  text-align: center;
  font-size: 0.75rem;
  color: var(--text-muted);
}