/* ==========================================================================
   ENTERPRISE DEVOPS AI AGENT - ACADEMIC RESEARCH SHOWCASE
   Theme: Refined Academic / Distill Editorial Aesthetic
   Typography: Newsreader (Academic Serif), Inter (Clean Sans), JetBrains Mono (Code)
   ========================================================================== */

:root {
  /* Academic Palette (Default: Refined Warm Editorial Light) */
  --bg-primary: #f8fafc;
  --bg-paper: #ffffff;
  --bg-secondary: #f1f5f9;
  --bg-tertiary: #e2e8f0;
  --bg-card: #ffffff;
  --bg-card-subtle: #f8fafc;
  
  --bg-tint-blue: rgba(30, 58, 138, 0.04);
  --bg-tint-green: rgba(21, 128, 61, 0.04);
  --bg-tint-amber: rgba(180, 83, 9, 0.04);
  --bg-tint-red: rgba(153, 27, 27, 0.04);
  --bg-tint-purple: rgba(109, 40, 217, 0.04);
  
  --border-color: #e2e8f0;
  --border-strong: #cbd5e1;
  --border-academic: #1e3a8a;

  /* Refined Academic Colors */
  --oxford-blue: #1e3a8a;
  --navy-accent: #0f172a;
  --sage-green: #15803d;
  --amber-ochre: #b45309;
  --crimson-red: #991b1b;
  --purple-royal: #6d28d9;
  
  --text-main: #0f172a;
  --text-body: #334155;
  --text-muted: #64748b;
  --text-subtle: #94a3b8;
  --text-caption: #475569;
  
  /* Fonts */
  --font-serif: 'Newsreader', 'Charter', Georgia, 'Times New Roman', serif;
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', 'Consolas', monospace;

  /* Shadows & Geometry */
  --shadow-paper: 0 1px 3px rgba(15, 23, 42, 0.05), 0 8px 24px -4px rgba(15, 23, 42, 0.04);
  --shadow-card: 0 1px 3px rgba(15, 23, 42, 0.04), 0 4px 12px rgba(15, 23, 42, 0.03);
  --shadow-hover: 0 4px 16px rgba(15, 23, 42, 0.08);
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-full: 9999px;
}

[data-theme="dark"] {
  --bg-primary: #0b1120;
  --bg-paper: #111827;
  --bg-secondary: #1e293b;
  --bg-tertiary: #24324a;
  --bg-card: #131d31;
  --bg-card-subtle: #0f172a;
  
  --bg-tint-blue: rgba(56, 189, 248, 0.08);
  --bg-tint-green: rgba(74, 222, 128, 0.08);
  --bg-tint-amber: rgba(251, 191, 36, 0.08);
  --bg-tint-red: rgba(248, 113, 113, 0.08);
  --bg-tint-purple: rgba(167, 139, 250, 0.08);
  
  --border-color: #24324a;
  --border-strong: #334155;
  --border-academic: #38bdf8;
  
  --oxford-blue: #38bdf8;
  --navy-accent: #f8fafc;
  --sage-green: #4ade80;
  --amber-ochre: #fbbf24;
  --crimson-red: #f87171;
  --purple-royal: #c084fc;
  
  --text-main: #f8fafc;
  --text-body: #cbd5e1;
  --text-muted: #94a3b8;
  --text-subtle: #64748b;
  --text-caption: #cbd5e1;
  
  --shadow-paper: 0 4px 20px rgba(0, 0, 0, 0.4);
  --shadow-card: 0 2px 10px rgba(0, 0, 0, 0.3);
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-sans);
  background-color: var(--bg-primary);
  color: var(--text-body);
  line-height: 1.7;
  overflow-x: hidden;
  transition: background-color 0.3s ease, color 0.3s ease;
  -webkit-font-smoothing: antialiased;
}

/* Typography Hierarchy */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-serif);
  color: var(--text-main);
  font-weight: 600;
  line-height: 1.25;
  text-wrap: balance;
}

p {
  margin-bottom: 1.2rem;
  color: var(--text-body);
  font-size: 1.02rem;
}

a {
  color: var(--oxford-blue);
  text-decoration: none;
  transition: color 0.2s;
}

a:hover {
  text-decoration: underline;
}

code, pre {
  font-family: var(--font-mono);
}

/* Container */
.container {
  max-width: 1140px;
  margin: 0 auto;
  padding: 0 24px;
}

/* Header & Academic Navbar */
.navbar {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--bg-paper);
  border-bottom: 1px solid var(--border-color);
  padding: 14px 0;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.02);
  transition: all 0.3s;
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 1.2rem;
  color: var(--text-main);
  text-decoration: none;
  letter-spacing: -0.01em;
}

.nav-logo-icon {
  width: 30px;
  height: 30px;
  border-radius: var(--radius-sm);
  background: var(--oxford-blue);
  color: #ffffff;
  display: flex;
  align-items: center;
  justify-content: center;
}

.nav-links {
  display: flex;
  gap: 22px;
  list-style: none;
}

.nav-link {
  color: var(--text-muted);
  font-size: 0.92rem;
  font-weight: 500;
  text-decoration: none;
  transition: color 0.2s;
}

.nav-link:hover {
  color: var(--oxford-blue);
  text-decoration: none;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

/* Theme Toggle Button */
.theme-toggle-btn {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  color: var(--text-main);
  padding: 7px 12px;
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  font-family: var(--font-sans);
  font-weight: 500;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: all 0.2s;
}

.theme-toggle-btn:hover {
  background: var(--border-color);
}

/* Academic Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 18px;
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: 0.92rem;
  border-radius: var(--radius-sm);
  cursor: pointer;
  text-decoration: none;
  transition: all 0.2s ease;
  border: 1px solid transparent;
}

.btn-primary {
  background: var(--oxford-blue);
  color: #ffffff;
  border-color: var(--oxford-blue);
}

.btn-primary:hover {
  background: #172554;
  color: #ffffff;
  text-decoration: none;
  box-shadow: var(--shadow-hover);
}

.btn-secondary {
  background: var(--bg-paper);
  color: var(--text-main);
  border-color: var(--border-strong);
}

.btn-secondary:hover {
  background: var(--bg-secondary);
  text-decoration: none;
}

.btn-sm {
  padding: 5px 12px;
  font-size: 0.84rem;
}

/* Academic Badges */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 3px 9px;
  border-radius: var(--radius-sm);
  font-size: 0.76rem;
  font-weight: 600;
  font-family: var(--font-mono);
  letter-spacing: 0.02em;
}

.badge-cyan, .badge-blue {
  background: var(--bg-tint-blue);
  color: var(--oxford-blue);
  border: 1px solid var(--border-color);
}

.badge-emerald, .badge-green {
  background: var(--bg-tint-green);
  color: var(--sage-green);
  border: 1px solid rgba(21, 128, 61, 0.2);
}

.badge-purple {
  background: var(--bg-tint-purple);
  color: var(--purple-royal);
  border: 1px solid rgba(109, 40, 217, 0.2);
}

.badge-amber, .badge-gold {
  background: var(--bg-tint-amber);
  color: var(--amber-ochre);
  border: 1px solid rgba(180, 83, 9, 0.2);
}

.badge-rose, .badge-red {
  background: var(--bg-tint-red);
  color: var(--crimson-red);
  border: 1px solid rgba(153, 27, 27, 0.2);
}

/* HERO SECTION - Academic Paper Header Style */
.hero-section {
  padding: 64px 0 48px;
  background: var(--bg-paper);
  border-bottom: 1px solid var(--border-color);
}

.paper-meta-bar {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 16px;
  margin-bottom: 20px;
  flex-wrap: wrap;
}

.hero-title {
  font-size: clamp(2.2rem, 4.2vw, 3.2rem);
  text-align: center;
  margin-bottom: 16px;
  letter-spacing: -0.02em;
  font-family: var(--font-serif);
  font-weight: 700;
}

.hero-authors {
  text-align: center;
  font-size: 1.05rem;
  color: var(--text-body);
  margin-bottom: 24px;
}

.hero-authors strong {
  color: var(--text-main);
}

/* Abstract Box */
.abstract-box {
  background: var(--bg-card-subtle);
  border: 1px solid var(--border-color);
  border-left: 4px solid var(--oxford-blue);
  border-radius: var(--radius-sm);
  padding: 24px 28px;
  max-width: 860px;
  margin: 0 auto 36px;
  text-align: left;
}

.abstract-title {
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 1.1rem;
  margin-bottom: 8px;
  color: var(--text-main);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.abstract-text {
  font-size: 0.98rem;
  color: var(--text-body);
  line-height: 1.75;
  margin-bottom: 0;
}

.hero-actions {
  display: flex;
  justify-content: center;
  gap: 14px;
  flex-wrap: wrap;
}

/* Academic Benchmark Grid */
.metrics-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 18px;
  margin-top: 40px;
}

.metric-card {
  background: var(--bg-paper);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  padding: 20px 22px;
  text-align: left;
  box-shadow: var(--shadow-card);
  transition: transform 0.2s, box-shadow 0.2s;
}

.metric-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-hover);
  border-color: var(--border-strong);
}

.metric-value {
  font-family: var(--font-serif);
  font-size: 2.2rem;
  font-weight: 700;
  color: var(--oxford-blue);
  line-height: 1;
  margin-bottom: 6px;
}

.metric-label {
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--text-main);
  margin-bottom: 4px;
}

.metric-desc {
  font-size: 0.82rem;
  color: var(--text-muted);
  line-height: 1.45;
}

/* Section Containers */
.section {
  padding: 64px 0;
  border-bottom: 1px solid var(--border-color);
}

.section:nth-child(even) {
  background: var(--bg-paper);
}

.section-header {
  margin-bottom: 36px;
  text-align: left;
}

.section-tag {
  margin-bottom: 8px;
}

.section-title {
  font-size: clamp(1.8rem, 3vw, 2.3rem);
  margin-bottom: 10px;
  font-family: var(--font-serif);
}

.section-desc {
  font-size: 1.05rem;
  color: var(--text-muted);
  max-width: 820px;
  line-height: 1.7;
}

/* Academic Card */
.card {
  background: var(--bg-paper);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 28px;
  box-shadow: var(--shadow-paper);
  margin-bottom: 24px;
}

/* Figure Caption Style */
.figure-caption {
  font-family: var(--font-sans);
  font-size: 0.86rem;
  color: var(--text-caption);
  margin-top: 14px;
  padding-top: 10px;
  border-top: 1px dashed var(--border-color);
  text-align: left;
}

.figure-caption strong {
  font-family: var(--font-serif);
  color: var(--text-main);
}

/* ==========================================================================
   LATEX / BOOKTABS ACADEMIC TABLES
   ========================================================================== */
.table-responsive {
  overflow-x: auto;
  margin: 20px 0;
}

.academic-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.92rem;
  text-align: left;
  font-family: var(--font-sans);
}

.academic-table thead tr {
  border-top: 2px solid var(--text-main);
  border-bottom: 1px solid var(--text-main);
}

.academic-table th {
  padding: 10px 14px;
  font-weight: 600;
  color: var(--text-main);
  background: transparent;
}

.academic-table tbody tr {
  border-bottom: 1px solid var(--border-color);
  transition: background 0.15s;
}

.academic-table tbody tr:last-child {
  border-bottom: 2px solid var(--text-main);
}

.academic-table tbody tr:hover {
  background: var(--bg-secondary);
}

.academic-table td {
  padding: 10px 14px;
  color: var(--text-body);
}

.academic-table .col-mono {
  font-family: var(--font-mono);
  font-size: 0.85rem;
}

/* ==========================================================================
   ACADEMIC FLOWCHARTS (STATEGRAPH & FUNCTIONS)
   ========================================================================== */
.flowchart-wrapper {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.flowchart-canvas {
  background: var(--bg-card-subtle);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  padding: 28px 20px;
  position: relative;
  overflow-x: auto;
}

.flow-diagram-grid {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  min-width: 960px;
  position: relative;
  padding: 10px 0;
}

.agent-node {
  background: var(--bg-paper);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm);
  padding: 16px 14px;
  min-width: 165px;
  max-width: 195px;
  text-align: center;
  cursor: pointer;
  transition: all 0.2s ease;
  position: relative;
  box-shadow: var(--shadow-card);
}

.agent-node:hover, .agent-node.selected {
  border-color: var(--oxford-blue);
  box-shadow: var(--shadow-hover);
  transform: translateY(-3px);
  background: var(--bg-paper);
}

.agent-node.self-healing {
  border-color: rgba(180, 83, 9, 0.4);
}
.agent-node.self-healing:hover, .agent-node.self-healing.selected {
  border-color: var(--amber-ochre);
}

.agent-node.decision-node {
  border-color: rgba(109, 40, 217, 0.4);
}

.agent-node.end-node {
  border-color: rgba(21, 128, 61, 0.5);
  background: var(--bg-tint-green);
}

.agent-node-badge {
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  margin-bottom: 6px;
  display: inline-block;
  padding: 2px 7px;
  border-radius: var(--radius-sm);
}

.agent-node-title {
  font-family: var(--font-serif);
  font-size: 1.02rem;
  font-weight: 700;
  margin-bottom: 4px;
  color: var(--text-main);
}

.agent-node-sub {
  font-size: 0.78rem;
  color: var(--text-muted);
}

.flow-arrow {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  color: var(--oxford-blue);
  font-size: 0.72rem;
  font-family: var(--font-mono);
  font-weight: 600;
  min-width: 44px;
  text-align: center;
}

.flow-arrow svg {
  stroke: var(--oxford-blue);
}

.self-healing-loop-container {
  margin-top: 18px;
  background: var(--bg-tint-amber);
  border: 1px dashed rgba(180, 83, 9, 0.35);
  border-radius: var(--radius-sm);
  padding: 14px 18px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.agent-inspector-box {
  background: var(--bg-card-subtle);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  padding: 22px;
  display: grid;
  grid-template-columns: 1.15fr 1fr;
  gap: 20px;
}

@media (max-width: 850px) {
  .agent-inspector-box {
    grid-template-columns: 1fr;
  }
}

/* Function Pipeline Grid */
.func-flow-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

@media (max-width: 1024px) {
  .func-flow-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}
@media (max-width: 640px) {
  .func-flow-grid {
    grid-template-columns: 1fr;
  }
}

.func-stage-col {
  background: var(--bg-card-subtle);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  padding: 18px 16px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.func-stage-header {
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 10px;
}

.func-stage-number {
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--oxford-blue);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-family: var(--font-mono);
  margin-bottom: 2px;
}

.func-stage-title {
  font-family: var(--font-serif);
  font-size: 1.08rem;
  font-weight: 700;
  color: var(--text-main);
}

.func-card {
  background: var(--bg-paper);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  padding: 12px 14px;
  cursor: pointer;
  transition: all 0.2s;
}

.func-card:hover, .func-card.active {
  border-color: var(--oxford-blue);
  background: var(--bg-tint-blue);
  transform: translateY(-2px);
  box-shadow: var(--shadow-card);
}

.func-card-name {
  font-family: var(--font-mono);
  font-size: 0.84rem;
  font-weight: 600;
  color: var(--oxford-blue);
  margin-bottom: 2px;
}

.func-card-type {
  display: inline-block;
  font-size: 0.68rem;
  padding: 1px 5px;
  border-radius: 3px;
  background: var(--bg-secondary);
  color: var(--text-muted);
  margin-bottom: 4px;
  font-family: var(--font-mono);
}

.func-card-desc {
  font-size: 0.8rem;
  color: var(--text-body);
  line-height: 1.4;
}

.func-detail-box {
  background: var(--bg-card-subtle);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  padding: 20px;
  margin-top: 20px;
  display: grid;
  grid-template-columns: 1.15fr 1fr;
  gap: 20px;
}

@media (max-width: 850px) {
  .func-detail-box {
    grid-template-columns: 1fr;
  }
}

/* ==========================================================================
   INTERACTIVE SIMULATOR & TERMINALS
   ========================================================================== */
.simulator-layout {
  display: grid;
  grid-template-columns: 1fr 1.25fr;
  gap: 24px;
}

@media (max-width: 900px) {
  .simulator-layout {
    grid-template-columns: 1fr;
  }
}

.sim-controls {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.sim-step-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.sim-step-item {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 12px 16px;
  background: var(--bg-card-subtle);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  transition: all 0.2s;
}

.sim-step-item.active {
  border-color: var(--oxford-blue);
  background: var(--bg-tint-blue);
}

.sim-step-item.completed {
  border-color: rgba(21, 128, 61, 0.4);
  background: var(--bg-tint-green);
}

.sim-step-icon {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-paper);
  border: 1px solid var(--border-strong);
  font-size: 0.85rem;
  font-weight: 600;
  font-family: var(--font-mono);
}

.sim-step-item.active .sim-step-icon {
  background: var(--oxford-blue);
  color: #fff;
  border-color: var(--oxford-blue);
}

.sim-step-item.completed .sim-step-icon {
  background: var(--sage-green);
  color: #fff;
  border-color: var(--sage-green);
}

.sim-step-content {
  flex: 1;
}

.sim-step-name {
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--text-main);
}

.sim-step-detail {
  font-size: 0.8rem;
  color: var(--text-muted);
}

.sim-output-panel {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

/* Academic Code Terminal Box */
.terminal-box {
  background: #0f172a;
  color: #e2e8f0;
  border: 1px solid #1e293b;
  border-radius: var(--radius-sm);
  overflow: hidden;
}

.terminal-header {
  background: #090d16;
  padding: 8px 14px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid #1e293b;
}

.terminal-dots {
  display: flex;
  gap: 5px;
}

.terminal-dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
}

.terminal-dot.red { background: #ef4444; }
.terminal-dot.yellow { background: #f59e0b; }
.terminal-dot.green { background: #10b981; }

.terminal-title {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: #94a3b8;
}

.terminal-body {
  padding: 14px 16px;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  line-height: 1.6;
  color: #cbd5e1;
  max-height: 320px;
  overflow-y: auto;
  white-space: pre-wrap;
  word-break: break-all;
}

.t-cyan { color: #38bdf8; }
.t-green { color: #4ade80; }
.t-yellow { color: #fde047; }
.t-red { color: #f87171; }
.t-muted { color: #64748b; }

/* RBAC Explorer */
.rbac-slider-box {
  background: var(--bg-card-subtle);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  padding: 20px;
  margin-bottom: 20px;
}

.clearance-pills {
  display: flex;
  gap: 10px;
  margin-top: 12px;
  flex-wrap: wrap;
}

.clearance-pill {
  flex: 1;
  min-width: 170px;
  padding: 10px 14px;
  background: var(--bg-paper);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all 0.2s;
}

.clearance-pill.active {
  border-color: var(--oxford-blue);
  background: var(--bg-tint-blue);
  box-shadow: var(--shadow-card);
}

.clearance-pill-title {
  font-weight: 600;
  font-size: 0.92rem;
  color: var(--text-main);
  margin-bottom: 2px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.clearance-pill-sub {
  font-size: 0.78rem;
  color: var(--text-muted);
}

.rbac-results-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 16px;
  margin-top: 18px;
}

.doc-chunk-card {
  background: var(--bg-paper);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  padding: 16px;
  transition: all 0.2s;
}

.doc-chunk-card.locked {
  border-color: rgba(153, 27, 27, 0.25);
  background: var(--bg-tint-red);
  opacity: 0.75;
}

.doc-chunk-card.unlocked {
  border-color: rgba(21, 128, 61, 0.3);
  background: var(--bg-tint-green);
}

.doc-chunk-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 8px;
}

.doc-chunk-title {
  font-weight: 600;
  font-size: 0.92rem;
  color: var(--text-main);
}

.doc-chunk-body {
  font-size: 0.84rem;
  color: var(--text-body);
  line-height: 1.5;
  font-family: var(--font-sans);
}

/* Tabs & Code Diff */
.tab-list {
  display: flex;
  gap: 6px;
  background: var(--bg-secondary);
  padding: 4px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-color);
  margin-bottom: 20px;
  overflow-x: auto;
}

.tab-btn {
  padding: 6px 14px;
  background: transparent;
  color: var(--text-muted);
  border: none;
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: 0.88rem;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all 0.2s;
  white-space: nowrap;
}

.tab-btn.active {
  background: var(--bg-paper);
  color: var(--text-main);
  box-shadow: var(--shadow-card);
}

.diff-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

@media (max-width: 850px) {
  .diff-grid {
    grid-template-columns: 1fr;
  }
}

.diff-box {
  background: #0f172a;
  border: 1px solid #1e293b;
  border-radius: var(--radius-sm);
  overflow: hidden;
}

.diff-header {
  padding: 10px 14px;
  background: #090d16;
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid #1e293b;
}

.diff-code {
  padding: 14px;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  line-height: 1.5;
  max-height: 340px;
  overflow-y: auto;
  white-space: pre;
}

/* Self-Healing Steps */
.self-healing-flow {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.sh-step {
  display: grid;
  grid-template-columns: 160px 1fr;
  gap: 16px;
  padding: 16px;
  background: var(--bg-card-subtle);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
}

@media (max-width: 640px) {
  .sh-step {
    grid-template-columns: 1fr;
  }
}

.sh-code-box {
  background: #0f172a;
  padding: 12px 14px;
  border-radius: var(--radius-sm);
  font-family: var(--font-mono);
  font-size: 0.8rem;
  overflow-x: auto;
}

/* Resilience Timeline */
.retry-timeline {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-top: 16px;
}

.retry-node {
  display: flex;
  align-items: center;
  gap: 18px;
  padding: 14px 18px;
  background: var(--bg-card-subtle);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  transition: all 0.2s;
}

.retry-badge-col {
  width: 120px;
}

.retry-desc-col {
  flex: 1;
}

.retry-delay-col {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--oxford-blue);
  font-weight: 600;
}

/* Skills Grid */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 18px;
}

.skill-category-card {
  background: var(--bg-paper);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  padding: 20px;
}

.skill-category-title {
  font-family: var(--font-serif);
  font-size: 1.12rem;
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--text-main);
}

.skill-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.skill-tag {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  padding: 4px 10px;
  border-radius: var(--radius-sm);
  font-size: 0.82rem;
  color: var(--text-body);
  transition: all 0.2s;
}

.skill-tag:hover {
  border-color: var(--oxford-blue);
  color: var(--oxford-blue);
  background: var(--bg-tint-blue);
}

/* Footer */
.footer {
  border-top: 1px solid var(--border-color);
  padding: 48px 0 24px;
  background: var(--bg-paper);
  text-align: center;
}

.footer-text {
  color: var(--text-muted);
  font-size: 0.85rem;
  margin-top: 14px;
}