/* BlitzRank Paper Website - Styles */

/* === CSS Variables === */
:root {
  --color-bg: #ffffff;
  --color-text: #333333;
  --color-text-light: #666666;
  --color-accent: #0066cc;
  --color-accent-hover: #004999;
  --color-border: #e0e0e0;
  --color-code-bg: #f5f5f5;
  --max-width: 900px;
  --font-stack: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
}

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

/* === Base === */
html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-stack);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.6;
}

a {
  color: var(--color-accent);
  text-decoration: none;
}

a:hover {
  color: var(--color-accent-hover);
  text-decoration: underline;
}

/* === Layout === */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

main {
  padding: 32px 0 60px;
}

section {
  margin-bottom: 32px;
}

section:last-child {
  margin-bottom: 0;
}

/* === Header === */
header {
  text-align: center;
  padding: 28px 0 20px;
  border-bottom: 1px solid var(--color-border);
}

.title {
  font-size: 2.5rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  margin-bottom: 6px;
}

.subtitle {
  font-size: 1.1rem;
  color: var(--color-text-light);
  font-weight: 400;
  max-width: 600px;
  margin: 0 auto 8px;
}

.venue {
  font-size: 0.85rem;
  color: var(--color-text-light);
}

/* === Authors === */
.authors {
  text-align: center;
  margin: 24px 0 16px;
}

.author-list {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 32px;
  margin-bottom: 8px;
}

.author {
  text-align: center;
}

.author-name {
  font-weight: 500;
}

.author-name a {
  color: var(--color-text);
}

.author-name a:hover {
  color: var(--color-accent);
}

.affiliation {
  font-size: 0.9rem;
  color: var(--color-text-light);
}

.equal-contrib {
  font-size: 0.85rem;
  color: var(--color-text-light);
  font-style: italic;
}

/* === Links Bar === */
.links {
  display: flex;
  justify-content: center;
  gap: 12px;
  flex-wrap: wrap;
  margin: 16px 0 24px;
}

.link-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 20px;
  border: 1px solid var(--color-border);
  border-radius: 6px;
  font-size: 0.95rem;
  color: var(--color-text);
  transition: all 0.2s ease;
}

.link-btn:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
  text-decoration: none;
}

.link-btn.disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.link-btn.disabled:hover {
  border-color: var(--color-border);
  color: var(--color-text);
}

.link-btn svg {
  width: 20px;
  height: 20px;
}

.coming-soon {
  font-size: 0.7rem;
  background: var(--color-text-light);
  color: white;
  padding: 2px 6px;
  border-radius: 3px;
  margin-left: 4px;
}

/* === Section Titles === */
.section-title {
  font-size: 1.35rem;
  font-weight: 600;
  margin-bottom: 12px;
  padding-bottom: 6px;
  border-bottom: 2px solid var(--color-border);
}

/* === Tagline === */
#tagline {
  margin-bottom: 28px;
}

.tagline-text {
  font-size: 1.1rem;
  line-height: 1.6;
  color: var(--color-text);
  text-align: center;
  padding: 16px 24px;
  background: linear-gradient(135deg, #f8fafc 0%, #f1f5f9 100%);
  border-radius: 8px;
  border-left: 4px solid var(--color-accent);
}

.tagline-text .lightning {
  font-size: 1.2rem;
  margin-right: 4px;
}

/* === Abstract === */
.abstract p {
  text-align: justify;
  font-size: 1.05rem;
}

/* === Method === */
.method-content {
  line-height: 1.7;
}

.method-content p {
  margin-bottom: 16px;
}

.method-content ul {
  margin-left: 24px;
  margin-bottom: 16px;
}

.method-content li {
  margin-bottom: 8px;
}

/* === Algorithm Visualization === */
.figure-academic {
  margin: 0;
}

.figure-panels {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

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

.figure-label {
  display: block;
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 12px;
}

.figure-panel img {
  width: 100%;
  height: auto;
  display: block;
}

.figure-academic figcaption {
  margin-top: 12px;
  font-size: 0.85rem;
  color: var(--color-text-light);
  text-align: center;
  line-height: 1.5;
}

/* === Results === */
.results-list {
  list-style: none;
  padding: 0;
}

.results-list li {
  padding: 12px 0;
  border-bottom: 1px solid var(--color-border);
  display: flex;
  align-items: flex-start;
  gap: 12px;
}

.results-list li:last-child {
  border-bottom: none;
}

.result-icon {
  color: #22c55e;
  font-size: 1.2rem;
  flex-shrink: 0;
}

/* === Citation === */
.citation-block {
  background: var(--color-code-bg);
  border-radius: 8px;
  padding: 20px;
  position: relative;
}

.citation-block pre {
  font-family: 'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, monospace;
  font-size: 0.85rem;
  overflow-x: auto;
  white-space: pre-wrap;
  word-wrap: break-word;
}

.copy-btn {
  position: absolute;
  top: 12px;
  right: 12px;
  padding: 6px 12px;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: 4px;
  font-size: 0.8rem;
  cursor: pointer;
  transition: all 0.2s ease;
}

.copy-btn:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
}

.copy-btn.copied {
  background: #22c55e;
  color: white;
  border-color: #22c55e;
}

/* === Code Snippet === */
.code-blocks {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.code-snippet {
  background: #1e1e1e;
  border-radius: 8px;
  padding: 14px 18px;
  position: relative;
  overflow-x: auto;
}

.code-snippet.code-bash {
  padding: 10px 18px;
}

.code-lang {
  position: absolute;
  top: 6px;
  left: 10px;
  font-size: 0.6rem;
  font-weight: 500;
  text-transform: uppercase;
  color: #555;
  letter-spacing: 0.03em;
  opacity: 0.6;
}

.code-snippet pre {
  margin: 0;
  font-family: 'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, monospace;
  font-size: 0.88rem;
  line-height: 1.5;
}

.code-snippet.code-bash pre {
  padding-top: 12px;
}

.code-snippet.code-python pre {
  padding-top: 16px;
}

.code-snippet code {
  color: #d4d4d4;
}

.code-snippet .copy-btn {
  background: #2d2d2d;
  border-color: #404040;
  color: #d4d4d4;
  top: 8px;
  right: 8px;
  padding: 4px 10px;
  font-size: 0.75rem;
}

.code-snippet .copy-btn:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
}

.code-comment {
  color: #6a9955;
}

.code-keyword {
  color: #c586c0;
}

.code-string {
  color: #ce9178;
}

.code-number {
  color: #b5cea8;
}

/* === Footer === */
footer {
  text-align: center;
  padding: 32px 0;
  border-top: 1px solid var(--color-border);
  color: var(--color-text-light);
  font-size: 0.9rem;
}

/* === Animation Player === */
.animation-wrapper {
  background: #fafafa;
  border-radius: 8px;
  padding: 12px;
  border: 1px solid var(--color-border);
}

.tournament-svg {
  width: 100%;
  height: auto;
  display: block;
}

/* Labels */
.tournament-svg .round-label {
  font-size: 16px;
  font-weight: 600;
  fill: var(--color-text);
  text-anchor: middle;
}

.tournament-svg .phase-label {
  font-size: 11px;
  fill: var(--color-text-light);
  text-anchor: middle;
}

/* Nodes */
.tournament-svg .node {
  cursor: default;
}

.tournament-svg .node-circle {
  fill: #ffffff;
  stroke: #cccccc;
  stroke-width: 1.5;
  transition: fill 0.25s ease, stroke 0.25s ease, opacity 0.25s ease;
}

.tournament-svg .node-id {
  font-size: 11px;
  font-weight: 600;
  fill: var(--color-text);
  text-anchor: middle;
  transition: fill 0.25s ease, opacity 0.25s ease;
}

.tournament-svg .degree-label {
  font-size: 8px;
  font-weight: 600;
  text-anchor: middle;
}

.tournament-svg .degree-label.loss {
  fill: #dc2626;
  transition: transform 0.2s ease;
}

.tournament-svg .degree-label.win {
  fill: #16a34a;
  transition: transform 0.2s ease;
}

/* Highlight when L/W values change */
.tournament-svg .degree-label.changed {
  animation: degreeChange 0.6s ease-out;
}

.tournament-svg .degree-label.loss.changed {
  fill: #ff0000;
}

.tournament-svg .degree-label.win.changed {
  fill: #00cc00;
}

@keyframes degreeChange {
  0% {
    transform: scale(1);
  }
  30% {
    transform: scale(1.8);
  }
  100% {
    transform: scale(1);
  }
}

/* Node states */
.tournament-svg .node.querying .node-circle {
  fill: #ADD8E6;
  stroke: #5ba3c0;
}

.tournament-svg .node.survivor .node-circle {
  fill: #E8F5E9;
  stroke: #66BB6A;
}

.tournament-svg .node.finalized-top .node-circle {
  fill: #228B22;
  stroke: #1a6b1a;
}

.tournament-svg .node.finalized-top .node-id {
  fill: #ffffff;
}

.tournament-svg .node.finalized-top .degree-label {
  opacity: 0;
}

.tournament-svg .node.eliminated .node-circle {
  fill: #f5f5f5;
  stroke: #dddddd;
  opacity: 0.4;
}

.tournament-svg .node.eliminated .node-id {
  fill: #aaaaaa;
  opacity: 0.4;
}

.tournament-svg .node.eliminated .degree-label {
  opacity: 0;
}

/* Loss-based border colors (for pending nodes) */
.tournament-svg .node.pending .node-circle[data-losses="1"] {
  stroke: #FF9999;
}

.tournament-svg .node.pending .node-circle[data-losses="2"] {
  stroke: #FF5555;
}

/* Edges */
.tournament-svg .edge {
  fill: none;
  transition: opacity 0.25s ease;
}

.tournament-svg .edge.old {
  stroke: #BBBBBB;
  stroke-width: 0.8;
  opacity: 0.4;
}

.tournament-svg .edge.new {
  stroke: #00CED1;
  stroke-width: 1.2;
  opacity: 1;
}

.tournament-svg .edge.inferred {
  stroke: #F59E0B;
  stroke-width: 1.2;
  stroke-dasharray: 4 2;
  opacity: 1;
  animation: inferredEdgeFade 0.5s ease-out forwards;
}

.tournament-svg .edge.pulse {
  stroke: #F59E0B;
  stroke-width: 2.5;
  opacity: 0;
  animation: edgePulse 0.6s ease-out forwards;
}

@keyframes edgePulse {
  0% {
    opacity: 0;
    stroke-width: 1;
  }
  30% {
    opacity: 0.8;
    stroke-width: 3;
  }
  100% {
    opacity: 0;
    stroke-width: 1;
  }
}

@keyframes inferredEdgeFade {
  0% {
    opacity: 0;
    stroke-dashoffset: 20;
  }
  50% {
    opacity: 1;
  }
  100% {
    opacity: 1;
    stroke-dashoffset: 0;
  }
}

/* Animation Controls */
.animation-controls {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  margin-top: 12px;
  padding: 10px 14px;
  background: var(--color-code-bg);
  border-radius: 8px;
  flex-wrap: wrap;
}

.animation-controls button {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: 6px;
  padding: 8px 14px;
  font-size: 1rem;
  cursor: pointer;
  transition: all 0.2s ease;
  min-width: 44px;
}

.animation-controls button:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
}

.animation-controls button:active {
  transform: scale(0.96);
}

.animation-controls input[type="range"] {
  flex: 1;
  min-width: 120px;
  max-width: 200px;
  height: 6px;
  -webkit-appearance: none;
  appearance: none;
  background: var(--color-border);
  border-radius: 3px;
  cursor: pointer;
}

.animation-controls input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 16px;
  height: 16px;
  background: var(--color-accent);
  border-radius: 50%;
  cursor: pointer;
}

.animation-controls input[type="range"]::-moz-range-thumb {
  width: 16px;
  height: 16px;
  background: var(--color-accent);
  border-radius: 50%;
  cursor: pointer;
  border: none;
}

.animation-controls select {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: 6px;
  padding: 8px 12px;
  font-size: 0.9rem;
  cursor: pointer;
}

.animation-controls select:hover {
  border-color: var(--color-accent);
}

.control-label {
  font-size: 0.85rem;
  color: var(--color-text-light);
}

/* === Pareto Plots === */
.section-intro {
  color: var(--color-text-light);
  margin-bottom: 20px;
  line-height: 1.6;
}

.pareto-tabs {
  display: flex;
  gap: 8px;
  margin-bottom: 16px;
  flex-wrap: wrap;
}

.pareto-tab {
  padding: 10px 20px;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: 6px;
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--color-text);
  cursor: pointer;
  transition: all 0.2s ease;
}

.pareto-tab:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
}

.pareto-tab.active {
  background: var(--color-accent);
  border-color: var(--color-accent);
  color: white;
}

.pareto-container {
  background: #fafafa;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  padding: 16px;
  min-height: 400px;
}

#pareto-chart {
  width: 100%;
  height: 420px;
}

.pareto-caption {
  margin-top: 12px;
  font-size: 0.9rem;
  color: var(--color-text-light);
  text-align: center;
}

/* === Responsive === */
@media (max-width: 600px) {
  .figure-panels {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 600px) {
  .title {
    font-size: 2rem;
  }

  .subtitle {
    font-size: 1.1rem;
  }

  .author-list {
    flex-direction: column;
    gap: 16px;
  }

  .links {
    flex-direction: column;
    align-items: center;
  }

  .link-btn {
    width: 100%;
    max-width: 250px;
    justify-content: center;
  }

  header {
    padding: 40px 0 32px;
  }

  main {
    padding: 32px 0 60px;
  }

  section {
    margin-bottom: 36px;
  }
}