:root {
  --primary: #fbb03b;
  --secondary: #f54e42;
  --accent: #1d4ed8;
  --success: #10b981;
  --purple: #7c3aed;
  --dark: white;
  --darker: #f9f9f9;
  --light: #15141a;
  --text-primary: #15141a;
  --text-secondary: #6b7280;
  --border: #15141a;
  --card-bg: #ffffff;
}

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



body {
  font-family: "Lexend", sans-serif;
  background: white;
  background-image: radial-gradient(circle, #e5e7eb 1px, transparent 1px);
  background-size: 20px 20px;
  color: var(--text-primary);
  overflow-x: hidden;
  line-height: 1.6;
}

.container {
  max-width: 1000px;
  margin: 0 auto;
  padding: 0 20px;
  position: relative;
  z-index: 1;
}

/* Header */
header {
  padding: 60px 0 40px;
  text-align: center;
  animation: fadeInDown 1s ease-out;
}

header .pizza {
  position: absolute;
  height: 256px;
  right: -20px;
  top: 250px;
  animation: float 1.5s ease-in-out infinite;
}

@keyframes float {
  0% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-12px);
  }
  100% {
    transform: translateY(0);
  }
}

h1 {
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 20px;
  letter-spacing: -2px;
}

.subtitle {
  font-size: clamp(1.1rem, 2vw, 1.4rem);
  color: var(--text-secondary);
  font-weight: 300;
  max-width: 600px;
  margin: 0 auto;
}

/* Section styling */
section {
  margin: 80px 0;
  opacity: 0;
  transform: translateY(30px);
  animation: fadeInUp 0.8s ease-out forwards;
}

section:nth-child(2) {
  animation-delay: 0.2s;
}
section:nth-child(3) {
  animation-delay: 0.4s;
}
section:nth-child(4) {
  animation-delay: 0.6s;
}

h2 {
  font-size: clamp(1.8rem, 4vw, 2.5rem);
  margin-bottom: 30px;
  position: relative;
  padding-left: 20px;
  font-weight: 700;
  letter-spacing: -1px;
  color: var(--text-primary);
}

h2::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  height: 100%;
  width: 5px;
  background: var(--primary);
  border-radius: 0;
}

/* Interactive cards */
.roles-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 25px;
  margin: 40px 0;
}

.role-card {
  background: var(--card-bg);
  border: 3px solid var(--border);
  border-radius: 0;
  padding: 30px;
  cursor: pointer;
  transition: all 0.2s ease;
  position: relative;
  overflow: visible;
  box-shadow: 4px 4px 0 var(--border);
}

.role-card:hover {
  transform: translate(-2px, -2px);
  box-shadow: 6px 6px 0 var(--border);
}

.role-card h3 {
  font-size: 1.5rem;
  margin-bottom: 12px;
  position: relative;
  z-index: 1;
  color: var(--text-primary);
  text-align: center;
}

.role-card p {
  color: var(--text-secondary);
  line-height: 1.7;
  position: relative;
  z-index: 1;
}

.role-icon {
  display: block;
  position: relative;
  z-index: 1;
  text-align: center;
}

.role-icon img {
  height: 128px;
}

/* Sprint cycle visualization */
.sprint-cycle {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 730px;
}

.sprint-cycle .rotate {
  animation: spin 50s linear infinite;
  transform-origin: 500px 400px; /* match cx, cy */
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

.cycle-diagram {
  width: 100%;
  max-width: 1000px;
  height: auto;
}

.svg-step {
  cursor: pointer;
  transition: all 0.2s ease;
}

.svg-step:hover rect {
  fill: #f9f9f9;
}

.svg-step .step-tooltip {
  transition: opacity 0.3s ease;
  pointer-events: none;
}

.svg-step:hover .step-tooltip {
  opacity: 1 !important;
}

.svg-step .step-tooltip rect {
  box-shadow: 3px 3px 0 var(--border);
}

/* Ceremonies section */
.ceremonies-list {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
  gap: 20px;
  margin: 40px 0;
}

.ceremony-item {
  background: var(--card-bg);
  border-left: 5px solid var(--secondary);
  border: 3px solid var(--border);
  border-left: 5px solid var(--secondary);
  padding: 25px;
  border-radius: 0;
  transition: all 0.2s ease;
  cursor: pointer;
  box-shadow: 3px 3px 0 var(--border);
}

.ceremony-item:hover {
  transform: translate(-2px, -2px);
  box-shadow: 5px 5px 0 var(--border);
}

.ceremony-item h4 {
  color: var(--secondary);
  font-size: 1.3rem;
  margin-bottom: 10px;
}

.ceremony-item .duration {
  display: inline-block;
  background: rgba(255, 51, 102, 0.2);
  color: var(--secondary);
  padding: 4px 12px;
  border-radius: 20px;
  font-size: 0.85rem;
  margin-bottom: 10px;
  font-family: "JetBrains Mono", monospace;
}

/* Artifacts section */
.artifacts-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 30px;
  margin: 40px 0;
}

.artifact-card {
  background: var(--card-bg);
  border: 3px solid var(--border);
  border-radius: 0;
  padding: 30px;
  position: relative;
  overflow: visible;
  transition: all 0.2s ease;
  box-shadow: 4px 4px 0 var(--border);
}

.artifact-card:hover {
  transform: translate(-2px, -2px);
  box-shadow: 6px 6px 0 var(--border);
}

.artifact-card h4 {
  font-size: 1.4rem;
  margin-bottom: 15px;
  text-align: center;
}

.artifact-icon {
  display: block;
  position: relative;
  text-align: center;
}

.artifact-icon img {
  height: 128px;
}

/* Work Items Section */
.work-items-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 30px;
  margin: 40px 0;
}

.work-item-card {
  background: var(--card-bg);
  border: 3px solid var(--border);
  border-radius: 0;
  overflow: hidden;
  transition: all 0.2s ease;
  box-shadow: 4px 4px 0 var(--border);
}

.work-item-card:hover {
  transform: translate(-2px, -2px);
  box-shadow: 6px 6px 0 var(--border);
}

.work-item-header {
  padding: 25px 25px 20px;
  border-bottom: 3px solid var(--border);
  position: relative;
  background: var(--card-bg);
}

.work-item-icon {
  display: block;
}

.work-item-card h3 {
  font-size: 1.6rem;
  margin-bottom: 10px;
  color: var(--light);
}

.work-item-icon img {
  height: 96px;
}

.work-item-badge {
  display: inline-block;
  padding: 4px 12px;
  border-radius: 0;
  font-size: 0.8rem;
  font-weight: 600;
  font-family: "JetBrains Mono", monospace;
  border: 2px solid var(--border);
}

.epic-card .work-item-header {
  background: var(--card-bg);
}

.epic-card .work-item-badge {
  background: var(--purple);
  color: white;
  border: 2px solid var(--border);
}

.story-card .work-item-header {
  background: var(--card-bg);
}

.story-card .work-item-badge {
  background: var(--accent);
  color: white;
  border: 2px solid var(--border);
}

.task-card .work-item-header {
  background: var(--card-bg);
}

.task-card .work-item-badge {
  background: var(--primary);
  color: var(--text-primary);
  border: 2px solid var(--border);
}

.subtask-card .work-item-header {
  background: var(--card-bg);
}

.subtask-card .work-item-badge {
  background: var(--secondary);
  color: white;
  border: 2px solid var(--border);
}

.work-item-content {
  padding: 25px;
}

.work-item-content h4 {
  color: var(--primary);
  font-size: 1.1rem;
  margin: 20px 0 10px 0;
}

.work-item-content h4:first-child {
  margin-top: 0;
}

.work-item-content p {
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 15px;
}

.work-item-content ul {
  list-style: none;
  padding: 0;
  margin: 10px 0;
}

.work-item-content ul li {
  color: var(--text-secondary);
  padding: 6px 0 6px 25px;
  position: relative;
  line-height: 1.6;
}

.work-item-content ul li::before {
  content: "▹";
  position: absolute;
  left: 0;
  color: var(--secondary);
  font-size: 1.2rem;
  transform: translateY(-50%) translateY(10px);
}

.example-box {
  background: var(--card-bg);
  border: 3px solid var(--border);
  border-left: 5px solid var(--primary);
  padding: 15px;
  border-radius: 0;
  margin-top: 15px;
  font-size: 0.95rem;
  box-shadow: 2px 2px 0 rgba(0, 0, 0, 0.1);
}

.example-box strong {
  color: var(--primary);
  display: block;
  margin-bottom: 8px;
}

.example-box ul {
  margin-top: 5px;
}

.example-box ul li::before {
  color: var(--primary);
  transform: translateY(-50%) translateY(10px);
}

/* Hierarchy Visual */
.hierarchy-visual {
  margin: 60px 0 40px;
  padding: 40px;
  background: var(--card-bg);
  border: 3px solid var(--border);
  border-radius: 0;
  box-shadow: 4px 4px 0 var(--border);
}

.hierarchy-flow {
  display: flex;
  justify-content: center;
  align-items: center;
  flex-wrap: wrap;
  gap: 20px;
  margin-top: 30px;
}

.hierarchy-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
}

.hierarchy-box {
  padding: 15px 30px;
  border-radius: 0;
  font-weight: 600;
  font-size: 1.1rem;
  text-align: center;
  min-width: 120px;
  transition: all 0.2s ease;
  cursor: pointer;
  border: 3px solid var(--border);
  box-shadow: 3px 3px 0 var(--border);
}

.hierarchy-box:hover {
  transform: translate(-2px, -2px);
  box-shadow: 5px 5px 0 var(--border);
}

.epic-box {
  background: var(--purple);
  color: white;
}

.story-box {
  background: var(--primary);
  color: white;
}

.task-box {
  background: var(--accent);
  color: var(--darker);
}

.subtask-box {
  background: var(--secondary);
  color: white;
}

.hierarchy-label {
  font-size: 0.85rem;
  color: var(--text-secondary);
  font-family: "JetBrains Mono", monospace;
}

.hierarchy-arrow {
  font-size: 2rem;
  color: var(--primary);
  padding-bottom: 25px;
}

@media (max-width: 768px) {
  .hierarchy-flow {
    flex-direction: column;
  }

  .hierarchy-arrow {
    transform: rotate(90deg);
  }

  .work-items-grid {
    grid-template-columns: 1fr;
  }
}

/* Documentation Section (PRD & RFC) */
.doc-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(450px, 1fr));
  gap: 40px;
  margin: 40px 0;
}

.doc-card {
  background: var(--card-bg);
  border: 3px solid var(--border);
  border-radius: 0;
  overflow: hidden;
  transition: all 0.2s ease;
  box-shadow: 4px 4px 0 var(--border);
}

.doc-card:hover {
  transform: translate(-2px, -2px);
  box-shadow: 6px 6px 0 var(--border);
}

.doc-header {
  padding: 30px;
  border-bottom: 3px solid var(--border);
  background: var(--card-bg);
}

.prd-card .doc-header {
  background: var(--card-bg);
}

.rfc-card .doc-header {
  background: var(--card-bg);
}

.doc-icon {
  display: block;
}

.doc-icon img {
  height: 128px;
}

.doc-card h3 {
  font-size: 1.8rem;
  color: var(--light);
  margin: 0;
}

.doc-content {
  padding: 30px;
}

.doc-content h4 {
  color: var(--primary);
  font-size: 1.2rem;
  margin: 25px 0 12px 0;
}

.doc-content h4:first-child {
  margin-top: 0;
}

.doc-content p {
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 15px;
}

.doc-content ul {
  list-style: none;
  padding: 0;
  margin: 10px 0;
}

.doc-content ul li {
  color: var(--text-secondary);
  padding: 8px 0 8px 25px;
  position: relative;
  line-height: 1.7;
}

.doc-content ul li::before {
  content: "▹";
  position: absolute;
  left: 0;
  color: var(--primary);
  font-size: 1.2rem;
}

.doc-content ul li strong {
  color: var(--light);
}

.doc-structure {
  margin-top: 30px;
  background: var(--card-bg);
  border-radius: 0;
  padding: 25px;
  border: 3px solid var(--border);
  box-shadow: 3px 3px 0 rgba(0, 0, 0, 0.1);
}

.doc-structure h4 {
  margin-top: 0;
  margin-bottom: 20px;
}

.structure-list {
  display: flex;
  flex-direction: column;
  gap: 15px;
}

.structure-item {
  display: flex;
  gap: 15px;
  align-items: flex-start;
  padding: 15px;
  background: #f9f9f9;
  border-radius: 0;
  border: 2px solid var(--border);
  border-left: 5px solid var(--primary);
  transition: all 0.2s ease;
  box-shadow: 2px 2px 0 rgba(0, 0, 0, 0.1);
}

.structure-item:hover {
  transform: translate(-2px, -2px);
  box-shadow: 3px 3px 0 rgba(0, 0, 0, 0.15);
}

.structure-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  background: var(--primary);
  border-radius: 50%;
  font-weight: 600;
  color: var(--text-primary);
  font-size: 0.9rem;
  flex-shrink: 0;
  border: 2px solid var(--border);
}

.structure-item strong {
  display: block;
  color: var(--light);
  font-size: 1rem;
  margin-bottom: 4px;
}

.structure-item p {
  color: var(--text-secondary);
  font-size: 0.9rem;
  margin: 0;
  line-height: 1.5;
}

/* PRD vs RFC Comparison */
.doc-comparison {
  margin: 60px 0 40px;
  padding: 40px;
  background: var(--card-bg);
  border: 3px solid var(--border);
  border-radius: 0;
  box-shadow: 4px 4px 0 var(--border);
}

.comparison-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 30px;
  margin-top: 30px;
}

.comparison-item {
  background: #f9f9f9;
  padding: 25px;
  border-radius: 0;
  border: 3px solid var(--border);
  box-shadow: 3px 3px 0 rgba(0, 0, 0, 0.1);
}

.comparison-item h4 {
  font-size: 1.3rem;
  margin-bottom: 20px;
}

.comparison-item ul {
  list-style: none;
  padding: 0;
}

.comparison-item ul li {
  color: var(--text-secondary);
  padding: 10px 0;
  border-bottom: 2px solid rgba(0, 0, 0, 0.1);
  line-height: 1.6;
}

.comparison-item ul li:last-child {
  border-bottom: none;
}

.comparison-item ul li strong {
  color: var(--primary);
  font-weight: 600;
}

@media (max-width: 1024px) {
  .doc-grid {
    grid-template-columns: 1fr;
  }
}

/* Metrics Section */
.metrics-grid {
  display: flex;
  flex-direction: row;
  gap: 40px;
  margin: -180px 0 40px 0;
  overflow-x: auto;
  overflow-y: hidden;
  padding-bottom: 20px;
  scroll-snap-type: x mandatory;
  transition: height 0.6s ease;
  /* Hide scrollbar */
  scrollbar-width: none; /* Firefox */
  -ms-overflow-style: none; /* IE/Edge */
}

.metrics-grid::-webkit-scrollbar {
  display: none; /* Chrome/Safari */
}

.metric-card {
  background: var(--card-bg);
  border: 3px solid var(--border);
  border-radius: 0;
  overflow: hidden;
  transition: all 0.2s ease;
  box-shadow: 4px 4px 0 var(--border);
  min-width: 100%; /* Full width - no peek */
  scroll-snap-align: start;
  scroll-snap-stop: always;
  align-self: flex-start;
}

.metric-card:hover {
  transform: translate(-2px, -2px);
  box-shadow: 6px 6px 0 var(--border);
}

.metric-header {
  padding: 30px;
  border-bottom: 3px solid var(--border);
  background: var(--card-bg);
}

.dora-card .metric-header {
  background: var(--card-bg);
}

.toc-card .metric-header {
  background: var(--card-bg);
}

.kanban-card .metric-header {
  background: var(--card-bg);
}

.scrum-card .metric-header {
  background: var(--card-bg);
}

.metric-icon {
  display: block;
}

.metric-icon img {
  height: 128px;
}

.metric-card h3 {
  font-size: 1.8rem;
  color: var(--light);
  margin-bottom: 10px;
}

.metric-badge {
  display: inline-block;
  padding: 4px 12px;
  border-radius: 0;
  font-size: 0.8rem;
  font-weight: 600;
  font-family: "JetBrains Mono", monospace;
  border: 2px solid var(--border);
}

.dora-card .metric-badge {
  background: var(--purple);
  color: white;
}

.toc-card .metric-badge {
  background: var(--primary);
  color: var(--text-primary);
}

.kanban-card .metric-badge {
  background: var(--accent);
  color: white;
}

.scrum-card .metric-badge {
  background: var(--secondary);
  color: white;
}

.metric-content {
  padding: 30px;
}

.metric-content h4 {
  color: var(--primary);
  font-size: 1.2rem;
  margin: 25px 0 12px 0;
}

.metric-content h4:first-child {
  margin-top: 0;
}

.metric-content p {
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 15px;
}

.metric-content ul {
  list-style: none;
  padding: 0;
  margin: 10px 0 20px;
}

.metric-content ul li {
  color: var(--text-secondary);
  padding: 6px 0 6px 25px;
  position: relative;
  line-height: 1.7;
}

.metric-content ul li::before {
  content: "▹";
  position: absolute;
  left: 0;
  color: var(--primary);
  font-size: 1.2rem;
}

.metric-list {
  display: flex;
  flex-direction: column;
  gap: 25px;
  margin: 20px 0;
}

.metric-item {
  background: #f9f9f9;
  border-radius: 0;
  padding: 20px;
  border: 3px solid var(--border);
  border-left: 5px solid var(--primary);
  transition: all 0.2s ease;
  box-shadow: 2px 2px 0 rgba(0, 0, 0, 0.1);
}

.metric-item:hover {
  transform: translate(-2px, -2px);
  box-shadow: 3px 3px 0 rgba(0, 0, 0, 0.15);
}

.metric-name {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 10px;
}

.metric-dot {
  width: 10px;
  height: 10px;
  background: var(--primary);
  border-radius: 50%;
  flex-shrink: 0;
}

.metric-name strong {
  color: var(--light);
  font-size: 1.1rem;
}

.metric-item > p {
  color: var(--text-secondary);
  margin-bottom: 12px;
  font-size: 0.95rem;
}

.metric-target,
.metric-example {
  background: white;
  border-radius: 0;
  padding: 12px;
  font-size: 0.9rem;
  line-height: 1.7;
  color: var(--text-secondary);
  margin-top: 10px;
  border: 2px solid var(--border);
}

.target-label {
  color: var(--primary);
  font-weight: 600;
  font-family: "JetBrains Mono", monospace;
}

.metric-example strong {
  color: var(--accent);
  font-weight: 600;
}

.metric-insight {
  background: var(--card-bg);
  border: 3px solid var(--border);
  border-left: 5px solid var(--primary);
  border-radius: 0;
  padding: 20px;
  margin-top: 25px;
  box-shadow: 2px 2px 0 rgba(0, 0, 0, 0.1);
}

.metric-insight strong {
  color: var(--primary);
  display: block;
  margin-bottom: 8px;
  font-size: 1.05rem;
}

.metric-insight {
  color: var(--text-secondary);
  line-height: 1.7;
}

/* Metrics Summary */
.metrics-summary {
  margin: 60px 0 40px;
  padding: 40px;
  background: var(--card-bg);
  border: 3px solid var(--border);
  border-radius: 0;
  box-shadow: 4px 4px 0 var(--border);
}

.summary-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 25px;
  margin-top: 30px;
}

.summary-item {
  background: #f9f9f9;
  padding: 25px;
  border-radius: 0;
  border: 3px solid var(--border);
  transition: all 0.2s ease;
  box-shadow: 3px 3px 0 rgba(0, 0, 0, 0.1);
}

.summary-item:hover {
  transform: translate(-2px, -2px);
  box-shadow: 4px 4px 0 rgba(0, 0, 0, 0.15);
}

.summary-item h4 {
  font-size: 1.2rem;
  margin-bottom: 12px;
  color: var(--light);
}

.summary-item p {
  color: var(--text-secondary);
  line-height: 1.7;
  font-size: 0.95rem;
}

/* Metrics horizontal scroll navigation */
.metrics-scroll-wrapper {
  position: relative;
  margin: 120px 0 40px 0;
  /* This wrapper constrains the sticky behavior */
}

.metrics-scroll-container {
  position: sticky;
  top: calc(50vh - 128px);
  height: 0;
  z-index: 100;
  pointer-events: none;
  padding-bottom: 100px;
  /* Sticky container that moves with scroll, centered vertically */
  /* Height is 0 so it doesn't take up space */
}

.metrics-scroll-btn {
  position: absolute;
  top: -128px;
  height: 256px;
  width: auto;
  background: transparent;
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s ease;
  user-select: none;
  padding: 0;
  pointer-events: auto;
}

.metrics-scroll-btn img {
  height: 256px;
  width: auto;
  display: block;
}

.metrics-scroll-btn:hover:not(.disabled) {
  transform: scale(1.1);
}

.metrics-scroll-btn:active:not(.disabled) {
  transform: scale(0.95);
}

.metrics-scroll-btn.disabled {
  opacity: 0.3;
  cursor: not-allowed;
  pointer-events: none;
}

.metrics-scroll-btn-left {
  left: -250px;
}

.metrics-scroll-btn-right {
  right: -250px;
}

.metrics-scroll-btn-right img {
  transform: rotate(180deg); /* Flip arrow to point right */
}

/* Responsive adjustments for metrics scroll */
@media (max-width: 1400px) {
  .metrics-scroll-btn-left {
    left: 20px;
  }

  .metrics-scroll-btn-right {
    right: 20px;
  }
}

@media (max-width: 1024px) {
  .metrics-scroll-btn-left {
    left: 10px;
  }

  .metrics-scroll-btn-right {
    right: 10px;
  }

  .metric-card {
    min-width: 100%;
  }
}

@media (max-width: 768px) {
  .metrics-scroll-btn {
    height: 180px;
  }

  .metrics-scroll-btn img {
    height: 180px;
  }

  .metrics-scroll-btn-left {
    left: 5px;
  }

  .metrics-scroll-btn-right {
    right: 5px;
  }

  .metric-card {
    min-width: 100%;
  }
}

@media (max-width: 1400px) {
  .metrics-scroll-btn {
    display: none;
  }
}

@media (max-width: 520px) {
  .metric-card {
    min-width: 100%;
  }
}

/* Footer */
footer {
  text-align: center;
  padding: 60px 0 40px;
  color: var(--text-secondary);
  border-top: 3px solid var(--border);
  margin-top: 100px;
}

/* Animations */
@keyframes fadeInDown {
  from {
    opacity: 0;
    transform: translateY(-30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Responsive */
@media (max-width: 768px) {
  h2 {
    font-size: 1.8rem;
  }

  .sprint-cycle {
    min-height: 550px;
  }
}

@media (max-width: 520px) {
  .sprint-cycle {
    min-height: 480px;
  }
}

/* Top Navigation Bar */
.top-nav {
  background: var(--card-bg);
  border-bottom: 3px solid var(--border);
  padding: 20px 0;
  position: relative;
  z-index: 1;
  box-shadow: 0 4px 0 rgba(0, 0, 0, 0.1);
}

.top-nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 40px;
}

.top-nav-title {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-primary);
  margin: 0 0 15px 0;
  letter-spacing: -0.5px;
}

.top-nav-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.top-nav-list li {
  margin: 0;
}

.top-nav-link {
  display: block;
  padding: 8px 16px;
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 500;
  border: 2px solid var(--border);
  border-radius: 0;
  background: var(--card-bg);
  transition: all 0.2s ease;
  box-shadow: 2px 2px 0 var(--border);
}

.top-nav-link:hover {
  background: var(--primary);
  color: var(--text-primary);
  transform: translate(-1px, -1px);
  box-shadow: 3px 3px 0 var(--border);
}

.top-nav-link.active {
  background: var(--primary);
  color: var(--text-primary);
  font-weight: 600;
  box-shadow: 3px 3px 0 var(--border);
}

/* Responsive top nav */
@media (max-width: 1024px) {
  .top-nav-container {
    padding: 0 20px;
  }
  
  .top-nav-title {
    font-size: 1.3rem;
  }
}

@media (max-width: 768px) {
  .top-nav {
    padding: 15px 0;
  }
  
  .top-nav-title {
    font-size: 1.1rem;
    margin-bottom: 10px;
  }
  
  .top-nav-link {
    padding: 6px 12px;
    font-size: 0.85rem;
  }
}

/* Scroll indicator */
.scroll-indicator {
  position: fixed;
  top: 0;
  left: 0;
  height: 6px;
  background: var(--primary);
  width: 0%;
  z-index: 1001;
  transition: width 0.1s ease;
  border-bottom: 3px solid var(--border);
}

/* Floating Table of Contents */
.floating-toc {
  position: fixed;
  top: 120px;
  right: 30px;
  z-index: 999;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s ease, visibility 0.3s ease;
}

.floating-toc.visible {
  opacity: 1;
  visibility: visible;
}

.toc-toggle {
  position: absolute;
  top: 0;
  right: 0;
  width: 50px;
  height: 50px;
  background: var(--primary);
  border: 3px solid var(--border);
  border-radius: 0;
  cursor: pointer;
  display: none;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  color: var(--text-primary);
  box-shadow: 4px 4px 0 var(--border);
  transition: all 0.2s ease;
  z-index: 1000;
}

.toc-toggle::after {
  content: 'Quick Navigation';
  position: absolute;
  right: calc(100% + 10px);
  top: 50%;
  transform: translateY(-50%);
  background: var(--card-bg);
  border: 3px solid var(--border);
  padding: 8px 12px;
  white-space: nowrap;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-primary);
  box-shadow: 3px 3px 0 var(--border);
  opacity: 0;
  visibility: hidden;
  transition: all 0.2s ease;
  pointer-events: none;
}

.toc-toggle:hover {
  transform: translate(-2px, -2px);
  box-shadow: 6px 6px 0 var(--border);
}

.toc-toggle:hover::after {
  opacity: 1;
  visibility: visible;
}

.toc-toggle:active {
  transform: translate(0, 0);
  box-shadow: 2px 2px 0 var(--border);
}

.toc-menu {
  background: var(--card-bg);
  border: 3px solid var(--border);
  border-radius: 0;
  padding: 0;
  width: 280px;
  max-height: calc(100vh - 180px);
  overflow-y: auto;
  box-shadow: 6px 6px 0 var(--border);
  opacity: 1;
  visibility: visible;
  transition: transform 0.3s ease, opacity 0.3s ease;
  transform: translateX(0);
}

.toc-menu.collapsed {
  transform: translateX(calc(100% + 30px));
  opacity: 0;
  visibility: hidden;
}

.floating-toc:has(.toc-menu.collapsed) .toc-toggle {
  display: flex;
}

.toc-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 20px 15px;
  border-bottom: 3px solid var(--border);
  position: sticky;
  top: 0;
  background: var(--card-bg);
  z-index: 1;
}

.toc-header h3 {
  margin: 0;
  font-size: 1.1rem;
  color: var(--text-primary);
  font-weight: 700;
}

.toc-close {
  background: transparent;
  border: none;
  font-size: 24px;
  color: var(--text-secondary);
  cursor: pointer;
  padding: 0;
  width: 30px;
  height: 30px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s ease;
}

.toc-close:hover {
  color: var(--primary);
  transform: scale(1.2);
}

.toc-list {
  list-style: none;
  padding: 10px;
  margin: 0;
}

.toc-list li {
  margin: 0;
}

.toc-link {
  display: block;
  padding: 12px 15px;
  color: var(--text-secondary);
  text-decoration: none;
  border-radius: 0;
  transition: all 0.2s ease;
  font-size: 0.95rem;
  position: relative;
  padding-left: 35px;
  border: 2px solid transparent;
  margin: 3px;
}

.toc-link::before {
  content: "▹";
  position: absolute;
  left: 15px;
  top: 50%;
  transform: translateY(-50%) translateY(-1px);
  color: var(--primary);
  font-size: 1.2rem;
  transition: all 0.3s ease;
}

.toc-link:hover {
  background: #f3f4f6;
  color: var(--text-primary);
  border: 2px solid var(--border);
  transform: translateX(2px);
}

.toc-link:hover::before {
  color: var(--primary);
}

.toc-link.active {
  background: var(--primary);
  color: white;
  border: 3px solid var(--border);
  border-left: 5px solid var(--border);
  box-shadow: 3px 3px 0 rgba(0, 0, 0, 0.1);
  transform: translateX(-3px);
  font-weight: 600;
}

.toc-link.active::before {
  color: white;
}

#tocTop {
  font-weight: 700;
  border-bottom: 2px solid var(--border);
  margin-bottom: 5px;
  padding-bottom: 15px;
}

/* Custom scrollbar for TOC */
.toc-menu::-webkit-scrollbar {
  width: 6px;
}

.toc-menu::-webkit-scrollbar-track {
  background: rgba(255, 255, 255, 0.05);
  border-radius: 3px;
}

.toc-menu::-webkit-scrollbar-thumb {
  background: var(--primary);
  border-radius: 3px;
}

.toc-menu::-webkit-scrollbar-thumb:hover {
  background: var(--accent);
}

/* Mobile responsive TOC - hide on smaller screens */
@media (max-width: 1400px) {
  .floating-toc {
    display: none;
  }
}