/* Curse Monitor — Design Tokens (from MASTER.md) */
:root {
  /* Colors */
  --color-primary: #1E293B;
  --color-on-primary: #FFFFFF;
  --color-secondary: #334155;
  --color-on-secondary: #FFFFFF;
  --color-accent: #22C55E;
  --color-on-accent: #0F172A;
  --color-background: #0F172A;
  --color-foreground: #F8FAFC;
  --color-card: #1B2336;
  --color-card-foreground: #F8FAFC;
  --color-muted: #272F42;
  --color-muted-foreground: #94A3B8;
  --color-border: #475569;
  --color-destructive: #EF4444;
  --color-on-destructive: #000000;
  --color-ring: #FFFFFF;

  /* Spacing */
  --space-xs: 2px;
  --space-sm: 4px;
  --space-md: 8px;
  --space-lg: 12px;
  --space-xl: 16px;
  --space-2xl: 24px;
  --space-3xl: 32px;

  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
  --shadow-md: 0 4px 6px rgba(0,0,0,0.1);
  --shadow-lg: 0 10px 15px rgba(0,0,0,0.1);

  /* Typography — system font stack (no Google Fonts) */
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-mono: "SF Mono", "Cascadia Code", "Fira Code", "Consolas", "Liberation Mono", monospace;

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-normal: 200ms ease;

  /* Border radius */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
}

/* Reset & Base */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-sans);
  background-color: var(--color-background);
  color: var(--color-foreground);
  line-height: 1.5;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* Focus styles — visible ring on all interactive elements */
:focus-visible {
  outline: 2px solid var(--color-ring);
  outline-offset: 2px;
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* Header */
.site-header {
  background-color: var(--color-card);
  border-bottom: 1px solid var(--color-border);
  padding: var(--space-2xl) 0;
}

.header-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-2xl);
}

.app-title {
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--color-foreground);
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

.app-subtitle {
  color: var(--color-muted-foreground);
  font-size: 0.9375rem;
  margin-top: var(--space-xs);
}

/* Main */
.main-content {
  flex: 1;
  padding: var(--space-2xl) 0;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-2xl);
}

/* Status Badge */
.status-section {
  margin-bottom: var(--space-2xl);
}

.status-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-md);
  padding: var(--space-md) var(--space-xl);
  border-radius: var(--radius-lg);
  font-weight: 600;
  font-size: 1.125rem;
  transition: background-color var(--transition-normal), color var(--transition-normal);
}

.status-badge.online {
  background-color: rgba(34, 197, 94, 0.15);
  color: var(--color-accent);
}

.status-badge.offline {
  background-color: rgba(239, 68, 68, 0.15);
  color: var(--color-destructive);
}

.status-badge.checking {
  background-color: rgba(148, 163, 184, 0.15);
  color: var(--color-muted-foreground);
}

.status-badge.stale {
  background-color: rgba(234, 179, 8, 0.15);
  color: #EAB308;
}

.status-indicator {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  flex-shrink: 0;
}

.status-badge.online .status-indicator {
  background-color: var(--color-accent);
}

.status-badge.offline .status-indicator {
  background-color: var(--color-destructive);
}

.status-badge.checking .status-indicator {
  background-color: var(--color-muted-foreground);
  animation: pulse 1.5s ease-in-out infinite;
}

.status-badge.stale .status-indicator {
  background-color: #EAB308;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

/* Cards */
.card {
  background-color: var(--color-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-2xl);
  box-shadow: var(--shadow-md);
}

.card-title {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--color-foreground);
  margin-bottom: var(--space-lg);
}

/* Info Grid */
.info-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--space-lg);
}

.info-item dt {
  font-size: 0.8125rem;
  color: var(--color-muted-foreground);
  text-transform: uppercase;
  letter-spacing: 0.025em;
  margin-bottom: var(--space-xs);
}

.info-item dd {
  font-size: 1rem;
  color: var(--color-foreground);
  font-weight: 500;
}

/* MOTD */
.motd-text {
  color: var(--color-muted-foreground);
  font-size: 1rem;
  line-height: 1.6;
  white-space: pre-wrap;
  word-break: break-word;
}

/* Players */
.players-info {
  display: flex;
  align-items: baseline;
  gap: var(--space-sm);
  margin-bottom: var(--space-lg);
}

.players-count {
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--color-foreground);
  font-family: var(--font-mono);
}

.players-separator {
  font-size: 1.5rem;
  color: var(--color-muted-foreground);
}

.players-max {
  font-size: 1.5rem;
  color: var(--color-muted-foreground);
  font-family: var(--font-mono);
}

.capacity-bar {
  width: 100%;
  height: 8px;
  background-color: var(--color-muted);
  border-radius: var(--radius-sm);
  overflow: hidden;
}

.capacity-fill {
  height: 100%;
  background-color: var(--color-accent);
  border-radius: var(--radius-sm);
  transition: width var(--transition-normal);
  width: 0%;
}

/* Address */
.address-row {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  flex-wrap: wrap;
}

.address-text {
  font-family: var(--font-mono);
  font-size: 1.125rem;
  color: var(--color-foreground);
  background-color: var(--color-muted);
  padding: var(--space-md) var(--space-lg);
  border-radius: var(--radius-md);
  flex: 1;
  min-width: 200px;
  word-break: break-all;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-md) var(--space-xl);
  border-radius: var(--radius-md);
  font-size: 0.9375rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-fast);
  border: none;
  min-height: 44px;
}

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

.btn-primary:hover:not(:disabled) {
  opacity: 0.9;
}

.btn-primary:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.btn-secondary {
  background-color: transparent;
  color: var(--color-foreground);
  border: 2px solid var(--color-border);
}

.btn-secondary:hover:not(:disabled) {
  border-color: var(--color-muted-foreground);
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

/* Stale Warning */
.stale-warning {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  padding: var(--space-lg);
  background-color: rgba(234, 179, 8, 0.1);
  border: 1px solid rgba(234, 179, 8, 0.3);
  border-radius: var(--radius-md);
  color: #EAB308;
  margin-top: var(--space-xl);
}

/* Error Section */
.error-card {
  border-color: var(--color-destructive);
}

.error-message {
  color: var(--color-muted-foreground);
  margin-bottom: var(--space-md);
}

.error-code {
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  color: var(--color-destructive);
  text-transform: uppercase;
}

/* Refresh Section */
.refresh-section {
  margin-top: var(--space-2xl);
  text-align: center;
}

.refresh-status {
  margin-top: var(--space-md);
  font-size: 0.875rem;
  color: var(--color-muted-foreground);
  min-height: 1.5em;
}

/* Skeleton Loading */
.skeleton-section {
  /* Reserved space to prevent layout shift */
}

.skeleton-card {
  min-height: 120px;
}

.skeleton-line {
  background: linear-gradient(90deg, var(--color-muted) 25%, var(--color-border) 50%, var(--color-muted) 75%);
  background-size: 200% 100%;
  border-radius: var(--radius-sm);
  animation: shimmer 1.5s infinite;
}

@keyframes shimmer {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

/* Footer */
.site-footer {
  background-color: var(--color-card);
  border-top: 1px solid var(--color-border);
  padding: var(--space-2xl) 0;
  text-align: center;
}

.site-footer p {
  color: var(--color-muted-foreground);
  font-size: 0.875rem;
}

.footer-meta {
  margin-top: var(--space-sm);
}

/* Icons */
.icon {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
}

.icon-lg {
  width: 28px;
  height: 28px;
}

/* Responsive */
@media (max-width: 768px) {
  .header-inner {
    padding: 0 var(--space-xl);
  }

  .container {
    padding: 0 var(--space-xl);
  }

  .app-title {
    font-size: 1.5rem;
  }

  .card {
    padding: var(--space-xl);
  }

  .players-count {
    font-size: 2rem;
  }

  .address-row {
    flex-direction: column;
    align-items: stretch;
  }

  .address-text {
    min-width: auto;
  }

  .btn-copy {
    width: 100%;
    justify-content: center;
  }
}

@media (max-width: 480px) {
  .app-title {
    font-size: 1.25rem;
  }

  .status-badge {
    font-size: 1rem;
    padding: var(--space-md) var(--space-lg);
  }

  .info-grid {
    grid-template-columns: 1fr;
  }
}

/* Touch targets */
@media (pointer: coarse) {
  .btn {
    min-height: 48px;
    min-width: 48px;
  }
}