/* Premium Editorial Styling for SharedWorker Demo Dashboard */
/* Inspired by aifoc.us print-like, minimalist aesthetics */
@import url('https://fonts.googleapis.com/css2?family=Joan&family=Lora:ital,wght@0,400;0,500;0,600;0,700;1,400&family=JetBrains+Mono:wght@400;500&display=swap');

:root {
  --bg-ivory: #fdfcf8;
  --bg-stone: #f4f3ee;
  --bg-paper: #ffffff;
  
  --text-black: #000000;
  --text-charcoal: #2d2d2d;
  --text-muted: #666666;
  --border-black: #000000;
  
  --accent-blue: #0022ff;
  --accent-emerald: #0a8f5c;
  --accent-rose: #d11a2a;

  --font-serif: 'Lora', Georgia, 'Times New Roman', serif;
  --font-heading: 'Joan', Georgia, serif;
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
  
  --flat-shadow: 4px 4px 0px #000000;
  --flat-shadow-hover: 6px 6px 0px #000000;
  --flat-shadow-active: 1px 1px 0px #000000;
  --transition-fast: all 0.15s ease-in-out;
}

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

body {
  background-color: var(--bg-ivory);
  color: var(--text-black);
  font-family: var(--font-sans);
  min-height: 100vh;
  overflow-x: hidden;
  line-height: 1.6;
}

/* Structural Editorial Panels */
.glass-panel {
  background: var(--bg-paper);
  border: 2px solid var(--border-black);
  border-radius: 4px;
  box-shadow: var(--flat-shadow);
  transition: var(--transition-fast);
}

.glass-panel:hover {
  transform: translate(-1px, -1px);
  box-shadow: var(--flat-shadow-hover);
}

/* Custom Scrollbar */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: var(--bg-ivory);
  border-left: 1px solid var(--border-black);
}

::-webkit-scrollbar-thumb {
  background: var(--text-black);
  border: 2px solid var(--bg-ivory);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--text-muted);
}

/* Inputs & Form Fields */
input[type="text"] {
  width: 100%;
  padding: 10px 14px;
  background: var(--bg-paper);
  border: 2px solid var(--border-black);
  border-radius: 4px;
  color: var(--text-black);
  font-family: var(--font-sans);
  font-size: 0.95rem;
  outline: none;
  transition: var(--transition-fast);
}

input[type="text"]:focus {
  background: var(--bg-paper);
  box-shadow: 2px 2px 0px var(--border-black);
  font-weight: 500;
}

/* Buttons (Flat Editorial) */
button {
  cursor: pointer;
  font-family: var(--font-sans);
  font-weight: 600;
  border-radius: 4px;
  border: 2px solid var(--border-black);
  padding: 10px 20px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-size: 0.9rem;
  transition: var(--transition-fast);
}

button.primary {
  background: var(--text-black);
  color: var(--bg-ivory);
  box-shadow: var(--flat-shadow);
}

button.primary:hover {
  background: var(--bg-stone);
  color: var(--text-black);
  transform: translate(-2px, -2px);
  box-shadow: var(--flat-shadow-hover);
}

button.primary:active {
  transform: translate(1px, 1px);
  box-shadow: var(--flat-shadow-active);
}

button.secondary {
  background: var(--bg-paper);
  color: var(--text-black);
  box-shadow: 2px 2px 0px var(--border-black);
}

button.secondary:hover {
  background: var(--bg-stone);
  transform: translate(-1px, -1px);
  box-shadow: 3px 3px 0px var(--border-black);
}

button.secondary:active {
  transform: translate(1px, 1px);
  box-shadow: 1px 1px 0px var(--border-black);
}

button.danger {
  background: var(--accent-rose);
  color: var(--bg-paper);
  box-shadow: var(--flat-shadow);
}

button.danger:hover {
  background: var(--bg-paper);
  color: var(--accent-rose);
  transform: translate(-2px, -2px);
  box-shadow: var(--flat-shadow-hover);
}

button.danger:active {
  transform: translate(1px, 1px);
  box-shadow: var(--flat-shadow-active);
}

/* Diagnostic / Terminal Logs */
.terminal-window {
  background: var(--bg-paper);
  border: 2px solid var(--border-black);
  border-radius: 4px;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  padding: 14px;
  overflow-y: auto;
  line-height: 1.45;
  color: var(--text-black);
  box-shadow: inset 1px 1px 4px rgba(0, 0, 0, 0.08);
}

.terminal-line {
  margin-bottom: 5px;
  display: flex;
  word-break: break-all;
}

.terminal-line .time {
  color: var(--text-muted);
  margin-right: 8px;
  flex-shrink: 0;
  user-select: none;
  font-size: 0.78rem;
}

.terminal-line .sys-tag {
  color: var(--accent-blue);
  font-weight: 600;
  margin-right: 6px;
  flex-shrink: 0;
  text-decoration: underline;
}

.terminal-line .user-tag {
  color: var(--text-black);
  font-weight: 600;
  margin-right: 6px;
  flex-shrink: 0;
  border-bottom: 1px solid var(--border-black);
}

.terminal-line .msg-text {
  color: var(--text-charcoal);
}

/* Badges */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 3px 8px;
  border-radius: 2px;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  border: 1px solid var(--border-black);
}

.badge-success {
  background: var(--bg-paper);
  color: var(--accent-emerald);
  border-color: var(--accent-emerald);
}

.badge-danger {
  background: var(--bg-paper);
  color: var(--accent-rose);
  border-color: var(--accent-rose);
}

/* Textbook Topology Diagram */
.topology-container {
  min-height: 220px;
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  padding: 16px;
  border: 1px dashed var(--border-black);
  background: var(--bg-stone);
  border-radius: 4px;
}

.topology-grid {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 20px;
  max-width: 480px;
  position: relative;
  z-index: 2;
}

.node {
  width: 85px;
  height: 85px;
  border-radius: 50%;
  background: var(--bg-paper);
  border: 2px solid var(--border-black);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  font-size: 0.72rem;
  font-weight: 700;
  text-align: center;
  transition: var(--transition-fast);
  color: var(--text-black);
  position: relative;
  font-family: var(--font-serif);
}

.node.worker-hub {
  width: 105px;
  height: 105px;
  border: 4px double var(--border-black);
  background: var(--bg-paper);
  box-shadow: 2px 2px 0px var(--border-black);
}

.node.active-iframe {
  border-color: var(--accent-blue);
  box-shadow: 2px 2px 0px var(--border-black);
}

.node.active-tab {
  background: var(--bg-stone);
  box-shadow: 2px 2px 0px var(--border-black);
}

.node span {
  font-size: 0.62rem;
  color: var(--text-muted);
  margin-top: 3px;
  font-weight: 500;
  font-family: var(--font-mono);
}

/* Status Indicator Dot inside Node */
.node::before {
  content: '';
  position: absolute;
  top: 6px;
  right: 6px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent-emerald);
  border: 1px solid var(--border-black);
}

.node.worker-hub::before {
  top: 8px;
  right: 8px;
  width: 10px;
  height: 10px;
  background: var(--accent-blue);
}

/* Layout Utilities */
.flex-row {
  display: flex;
  gap: 12px;
  align-items: center;
}

.flex-grow {
  flex-grow: 1;
}

.text-center {
  text-align: center;
}

.title-gradient {
  font-family: var(--font-heading);
  color: var(--text-black);
  text-decoration: underline;
  text-decoration-thickness: 3px;
  text-underline-offset: 12px;
  font-size: 3.5rem;
}

.author-block {
  margin-top: 24px;
  font-family: var(--font-serif);
  font-size: 0.95rem;
  color: var(--text-charcoal);
  border-top: 1px solid var(--border-black);
  border-bottom: 1px solid var(--border-black);
  padding: 8px 16px;
  display: inline-flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

.author-block a {
  color: var(--accent-blue);
  text-decoration: underline;
  font-weight: 600;
  transition: var(--transition-fast);
}

.author-block a:hover {
  color: var(--text-black);
}