:root {
  --bg-primary: #06060a;
  --bg-secondary: #0c0c14;
  --bg-tertiary: #12121e;
  --bg-card: #0f0f1a;
  --bg-card-hover: #16162a;
  --border: #1a1a2e;
  --border-light: #252540;
  --text-primary: #e8e8f0;
  --text-secondary: #9898b0;
  --text-muted: #686880;
  --accent: #7c5cfc;
  --accent-hover: #9078ff;
  --accent-muted: rgba(124, 92, 252, 0.15);
  --accent-glow: rgba(124, 92, 252, 0.25);
  --green: #34d399;
  --green-muted: rgba(52, 211, 153, 0.15);
  --red: #f87171;
  --red-muted: rgba(248, 113, 113, 0.15);
  --orange: #fb923c;
  --orange-muted: rgba(251, 146, 60, 0.15);
  --cyan: #22d3ee;
  --cyan-muted: rgba(34, 211, 238, 0.15);
  --radius: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --shadow: 0 4px 24px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 8px 40px rgba(0, 0, 0, 0.5);
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', 'SF Mono', monospace;
  --sidebar-width: 260px;
  --header-height: 64px;
}

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

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-sans);
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.7;
  font-size: 15px;
  min-height: 100vh;
}

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

/* Header */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-height);
  background: rgba(6, 6, 10, 0.85);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  padding: 0 24px;
  z-index: 100;
}

.header-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 18px;
  font-weight: 700;
  color: var(--text-primary);
  text-decoration: none;
}

.header-logo svg {
  width: 28px;
  height: 28px;
}

.header-nav {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-left: auto;
}

.header-nav a {
  padding: 6px 14px;
  border-radius: var(--radius);
  color: var(--text-secondary);
  font-size: 13px;
  font-weight: 500;
  transition: all 0.2s;
}

.header-nav a:hover,
.header-nav a.active {
  color: var(--text-primary);
  background: var(--bg-tertiary);
}

.header-nav .btn-primary {
  background: var(--accent);
  color: #fff;
}

.header-nav .btn-primary:hover {
  background: var(--accent-hover);
  color: #fff;
}

/* Layout */
.layout {
  display: flex;
  margin-top: var(--header-height);
  min-height: calc(100vh - var(--header-height));
}

/* Sidebar */
.sidebar {
  position: fixed;
  top: var(--header-height);
  left: 0;
  width: var(--sidebar-width);
  height: calc(100vh - var(--header-height));
  background: var(--bg-secondary);
  border-right: 1px solid var(--border);
  overflow-y: auto;
  padding: 20px 0;
  z-index: 50;
}

.sidebar::-webkit-scrollbar { width: 4px; }
.sidebar::-webkit-scrollbar-track { background: transparent; }
.sidebar::-webkit-scrollbar-thumb { background: var(--border-light); border-radius: 4px; }

.sidebar-group {
  margin-bottom: 4px;
}

.sidebar-group-title {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 20px;
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
  cursor: pointer;
  user-select: none;
  transition: color 0.15s;
}

.sidebar-group-title:hover {
  color: var(--text-primary);
}

.sidebar-group-title .chevron {
  font-size: 10px;
  transition: transform 0.2s ease;
  opacity: 0.5;
}

.sidebar-group.collapsed .sidebar-group-title .chevron {
  transform: rotate(-90deg);
}

.sidebar-group.collapsed .sidebar-group-items {
  display: none;
}

.sidebar-group-items {
  overflow: hidden;
}

.sidebar-link {
  display: block;
  padding: 7px 20px 7px 28px;
  font-size: 13px;
  color: var(--text-secondary);
  transition: all 0.15s;
  border-left: 2px solid transparent;
  text-decoration: none;
}

.sidebar-link:hover {
  color: var(--text-primary);
  background: var(--bg-tertiary);
}

.sidebar-link.active {
  color: var(--accent);
  border-left-color: var(--accent);
  background: var(--accent-muted);
}

.sidebar-divider {
  height: 1px;
  background: var(--border);
  margin: 12px 20px;
}

/* Main content */
.main {
  margin-left: var(--sidebar-width);
  flex: 1;
  padding: 48px 60px 80px;
  max-width: 860px;
  position: relative;
  overflow: hidden;
}

/* Typography */
h1 {
  font-size: 36px;
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.2;
  margin-bottom: 12px;
  background: linear-gradient(135deg, var(--text-primary) 0%, var(--accent) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.subtitle {
  font-size: 17px;
  color: var(--text-secondary);
  margin-bottom: 40px;
  line-height: 1.6;
}

h2 {
  font-size: 22px;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-top: 48px;
  margin-bottom: 16px;
  color: var(--text-primary);
}

h3 {
  font-size: 17px;
  font-weight: 600;
  margin-top: 32px;
  margin-bottom: 12px;
  color: var(--text-primary);
}

p {
  margin-bottom: 16px;
  color: var(--text-secondary);
}

/* Code */
code {
  font-family: var(--font-mono);
  font-size: 13px;
  background: var(--bg-tertiary);
  padding: 2px 7px;
  border-radius: 4px;
  color: var(--accent);
  border: 1px solid var(--border);
}

pre {
  background: var(--bg-tertiary);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 20px;
  overflow-x: auto;
  margin-bottom: 24px;
}

pre code {
  background: none;
  border: none;
  padding: 0;
  color: var(--text-primary);
  font-size: 13px;
  line-height: 1.6;
}

/* Cards */
.card-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  margin: 24px 0;
}

.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 24px;
  transition: all 0.25s;
  text-decoration: none;
  color: inherit;
  display: block;
}

.card:hover {
  border-color: var(--accent);
  background: var(--bg-card-hover);
  box-shadow: 0 0 24px var(--accent-glow);
  transform: translateY(-1px);
}

.card-icon {
  width: 40px;
  height: 40px;
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  margin-bottom: 14px;
}

.card-icon.purple { background: var(--accent-muted); color: var(--accent); }
.card-icon.green { background: var(--green-muted); color: var(--green); }
.card-icon.orange { background: var(--orange-muted); color: var(--orange); }
.card-icon.cyan { background: var(--cyan-muted); color: var(--cyan); }
.card-icon.red { background: var(--red-muted); color: var(--red); }

.card-title {
  font-size: 15px;
  font-weight: 600;
  margin-bottom: 6px;
  color: var(--text-primary);
}

.card-desc {
  font-size: 13px;
  color: var(--text-muted);
  line-height: 1.5;
}

/* Steps */
.steps {
  margin: 24px 0;
  padding-left: 0;
  list-style: none;
  counter-reset: step-counter;
}

.step {
  position: relative;
  padding-left: 48px;
  padding-bottom: 32px;
  border-left: 1px solid var(--border);
  margin-left: 16px;
}

.step:last-child {
  border-left-color: transparent;
  padding-bottom: 0;
}

.step::before {
  counter-increment: step-counter;
  content: counter(step-counter);
  position: absolute;
  left: -16px;
  top: 0;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--accent);
  color: #fff;
  font-size: 13px;
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
}

.step-title {
  font-size: 16px;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--text-primary);
}

.step-content {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* Callout / Note */
.callout {
  padding: 16px 20px;
  border-radius: var(--radius-lg);
  margin: 20px 0;
  font-size: 14px;
  line-height: 1.6;
  border: 1px solid;
}

.callout-info {
  background: var(--accent-muted);
  border-color: rgba(124, 92, 252, 0.3);
  color: var(--text-secondary);
}

.callout-info strong { color: var(--accent); }

.callout-tip {
  background: var(--green-muted);
  border-color: rgba(52, 211, 153, 0.3);
}

.callout-tip strong { color: var(--green); }

.callout-warning {
  background: var(--orange-muted);
  border-color: rgba(251, 146, 60, 0.3);
}

.callout-warning strong { color: var(--orange); }

/* Accordion / FAQ */
.accordion {
  margin-bottom: 8px;
}

.accordion-trigger {
  width: 100%;
  text-align: left;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 16px 20px;
  font-size: 15px;
  font-weight: 600;
  color: var(--text-primary);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  font-family: var(--font-sans);
  transition: all 0.2s;
}

.accordion-trigger:hover {
  border-color: var(--accent);
  background: var(--bg-card-hover);
}

.accordion-trigger .chevron {
  transition: transform 0.25s;
  color: var(--text-muted);
  flex-shrink: 0;
}

.accordion.open .accordion-trigger .chevron {
  transform: rotate(180deg);
}

.accordion-content {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease, padding 0.3s ease;
}

.accordion.open .accordion-content {
  max-height: 600px;
  padding: 16px 20px;
}

.accordion-content p,
.accordion-content li {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* Tab nav */
.tab-nav {
  display: flex;
  gap: 4px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 24px;
  margin-top: 32px;
}

.tab-btn {
  padding: 10px 18px;
  font-size: 13px;
  font-weight: 600;
  color: var(--text-muted);
  background: none;
  border: none;
  border-bottom: 2px solid transparent;
  cursor: pointer;
  font-family: var(--font-sans);
  transition: all 0.2s;
}

.tab-btn:hover { color: var(--text-secondary); }

.tab-btn.active {
  color: var(--accent);
  border-bottom-color: var(--accent);
}

.tab-panel { display: none; }
.tab-panel.active { display: block; }

/* Feature list */
.feature-list {
  list-style: none;
  padding: 0;
}

.feature-list li {
  padding: 10px 0;
  border-bottom: 1px solid var(--border);
  font-size: 14px;
  color: var(--text-secondary);
  display: flex;
  align-items: flex-start;
  gap: 10px;
}

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

.feature-list .check {
  color: var(--green);
  flex-shrink: 0;
  margin-top: 2px;
}

/* Hero banner */
.hero {
  background: linear-gradient(135deg, var(--bg-tertiary) 0%, rgba(124, 92, 252, 0.08) 100%);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: 48px 40px;
  margin-bottom: 40px;
  text-align: center;
}

.hero h1 {
  font-size: 42px;
  margin-bottom: 16px;
}

.hero .subtitle {
  font-size: 18px;
  max-width: 520px;
  margin: 0 auto 32px;
}

.hero-actions {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: var(--radius);
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
  text-decoration: none;
  border: none;
  font-family: var(--font-sans);
}

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

.btn-primary:hover {
  background: var(--accent-hover);
  color: #fff;
  box-shadow: 0 0 20px var(--accent-glow);
}

.btn-secondary {
  background: var(--bg-tertiary);
  color: var(--text-primary);
  border: 1px solid var(--border);
}

.btn-secondary:hover {
  border-color: var(--accent);
  color: var(--text-primary);
}

/* Architecture diagram */
.diagram {
  background: var(--bg-tertiary);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px;
  margin: 24px 0;
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.5;
  overflow-x: auto;
  color: var(--text-secondary);
  white-space: pre;
}

/* Table */
.doc-table {
  width: 100%;
  border-collapse: collapse;
  margin: 20px 0;
  font-size: 14px;
}

.doc-table th {
  text-align: left;
  padding: 12px 16px;
  background: var(--bg-tertiary);
  border: 1px solid var(--border);
  font-weight: 600;
  color: var(--text-primary);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.doc-table td {
  padding: 12px 16px;
  border: 1px solid var(--border);
  color: var(--text-secondary);
}

.doc-table tr:hover td {
  background: var(--bg-card);
}

/* Badge */
.badge {
  display: inline-block;
  padding: 3px 10px;
  border-radius: 20px;
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.badge-purple { background: var(--accent-muted); color: var(--accent); }
.badge-green { background: var(--green-muted); color: var(--green); }
.badge-orange { background: var(--orange-muted); color: var(--orange); }

/* Divider */
hr {
  border: none;
  border-top: 1px solid var(--border);
  margin: 32px 0;
}

/* Footer */
.footer {
  margin-left: var(--sidebar-width);
  padding: 32px 60px;
  border-top: 1px solid var(--border);
  font-size: 13px;
  color: var(--text-muted);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.footer a {
  color: var(--text-secondary);
}

/* Mobile */
.mobile-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--text-primary);
  font-size: 24px;
  cursor: pointer;
  padding: 4px;
}

@media (max-width: 768px) {
  .sidebar {
    transform: translateX(-100%);
    transition: transform 0.3s;
    z-index: 200;
  }

  .sidebar.open {
    transform: translateX(0);
  }

  .main {
    margin-left: 0;
    padding: 32px 20px 60px;
  }

  .footer {
    margin-left: 0;
    padding: 24px 20px;
    flex-direction: column;
    gap: 8px;
  }

  .mobile-toggle { display: block; }
  .header-nav { display: none; }
  .card-grid { grid-template-columns: 1fr; }
  h1 { font-size: 28px; }
  .hero h1 { font-size: 30px; }
  .hero { padding: 32px 24px; }
}

/* ========= LEARN PLATFORM ========= */

/* Live Code Editor */
.live-editor {
  background: var(--bg-tertiary);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  margin: 20px 0;
  overflow: hidden;
}

.editor-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 16px;
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border);
  font-size: 12px;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.editor-header-actions {
  display: flex;
  gap: 6px;
}

.editor-btn {
  padding: 4px 12px;
  border-radius: 4px;
  font-size: 11px;
  font-weight: 600;
  border: 1px solid var(--border);
  background: var(--bg-tertiary);
  color: var(--text-secondary);
  cursor: pointer;
  font-family: var(--font-sans);
  transition: all 0.15s;
}

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

.editor-btn.run {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}

.editor-btn.run:hover {
  background: var(--accent-hover);
}

.editor-body {
  display: grid;
  grid-template-columns: 1fr 1fr;
  min-height: 300px;
}

@media (max-width: 768px) {
  .editor-body { grid-template-columns: 1fr; }
}

.editor-pane-label {
  padding: 6px 16px;
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border);
}

.code-input {
  width: 100%;
  min-height: 260px;
  padding: 16px;
  background: var(--bg-primary);
  color: var(--text-primary);
  border: none;
  border-right: 1px solid var(--border);
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.6;
  resize: vertical;
  outline: none;
  tab-size: 2;
}

.code-input:focus {
  box-shadow: inset 0 0 0 1px var(--accent);
}

.output-frame {
  width: 100%;
  min-height: 260px;
  border: none;
  background: #fff;
}

/* Quiz */
.quiz {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 24px;
  margin: 20px 0;
}

.quiz-question {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 16px;
}

.quiz-options {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.quiz-option {
  padding: 12px 16px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-size: 14px;
  color: var(--text-secondary);
  cursor: pointer;
  transition: all 0.15s;
  background: var(--bg-tertiary);
  font-family: var(--font-sans);
  text-align: left;
}

.quiz-option:hover {
  border-color: var(--accent);
  color: var(--text-primary);
}

.quiz-option.correct {
  border-color: var(--green);
  background: var(--green-muted);
  color: var(--green);
}

.quiz-option.wrong {
  border-color: var(--red);
  background: var(--red-muted);
  color: var(--red);
}

.quiz-feedback {
  margin-top: 12px;
  font-size: 14px;
  font-weight: 500;
}

.quiz-feedback.correct { color: var(--green); }
.quiz-feedback.wrong { color: var(--red); }

/* Lesson tabs */
.lesson-tabs { margin: 20px 0; }

.lesson-tab-nav {
  display: flex;
  gap: 4px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 20px;
  overflow-x: auto;
}

.lesson-tab-btn {
  padding: 10px 18px;
  font-size: 13px;
  font-weight: 600;
  color: var(--text-muted);
  background: none;
  border: none;
  border-bottom: 2px solid transparent;
  cursor: pointer;
  font-family: var(--font-sans);
  transition: all 0.2s;
  white-space: nowrap;
}

.lesson-tab-btn:hover { color: var(--text-secondary); }

.lesson-tab-btn.active {
  color: var(--accent);
  border-bottom-color: var(--accent);
}

.lesson-panel { display: none; }
.lesson-panel.active { display: block; }

/* Lesson nav (prev/next) */
.lesson-nav {
  display: flex;
  justify-content: space-between;
  margin-top: 48px;
  padding-top: 24px;
  border-top: 1px solid var(--border);
  gap: 16px;
}

.lesson-nav-link {
  flex: 1;
  display: block;
  padding: 16px 20px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  text-decoration: none;
  transition: all 0.2s;
}

.lesson-nav-link:hover {
  border-color: var(--accent);
  background: var(--bg-card-hover);
}

.lesson-nav-link .label {
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
  margin-bottom: 4px;
}

.lesson-nav-link .title {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-primary);
}

.lesson-nav-link.next { text-align: right; }

/* Code block with copy */
.code-block {
  position: relative;
  margin: 16px 0;
}

.code-block pre {
  margin: 0;
  padding-right: 60px;
}

.copy-btn {
  position: absolute;
  top: 8px;
  right: 8px;
  padding: 4px 10px;
  border-radius: 4px;
  font-size: 11px;
  font-weight: 600;
  border: 1px solid var(--border);
  background: var(--bg-secondary);
  color: var(--text-muted);
  cursor: pointer;
  font-family: var(--font-sans);
  transition: all 0.15s;
}

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

/* Sidebar completed mark */
.lesson-link { position: relative; }
.check-mark {
  color: var(--green);
  font-size: 12px;
  margin-left: 4px;
}

/* Language icon badges */
.lang-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 12px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 600;
  margin-bottom: 16px;
}

.lang-badge.html { background: var(--orange-muted); color: var(--orange); }
.lang-badge.css { background: var(--cyan-muted); color: var(--cyan); }
.lang-badge.ts { background: var(--accent-muted); color: var(--accent); }
.lang-badge.py { background: var(--green-muted); color: var(--green); }
.lang-badge.swift { background: var(--red-muted); color: var(--red); }
.lang-badge.java { background: var(--orange-muted); color: var(--orange); }

/* Concept boxes */
.concept-box {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 20px 24px;
  margin: 20px 0;
}

.concept-box h4 {
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--text-primary);
}

.concept-box p {
  font-size: 14px;
  margin-bottom: 0;
}

/* Challenge box */
.challenge-box {
  background: linear-gradient(135deg, rgba(124, 92, 252, 0.08) 0%, rgba(52, 211, 153, 0.06) 100%);
  border: 1px solid rgba(124, 92, 252, 0.3);
  border-radius: var(--radius-lg);
  padding: 24px;
  margin: 24px 0;
}

.challenge-box .challenge-title {
  font-size: 14px;
  font-weight: 700;
  color: var(--accent);
  margin-bottom: 8px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.challenge-box p {
  font-size: 14px;
  color: var(--text-secondary);
}

/* Output label */
.output-label {
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
  margin-bottom: 8px;
}

/* Lesson hero */
.lesson-hero {
  padding-bottom: 24px;
  margin-bottom: 32px;
  border-bottom: 1px solid var(--border);
}

.lesson-hero h1 {
  font-size: 32px;
  margin-bottom: 8px;
}

.lesson-meta {
  display: flex;
  gap: 16px;
  font-size: 13px;
  color: var(--text-muted);
}

/* Learning path card */
.path-card {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 20px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  text-decoration: none;
  transition: all 0.2s;
  margin-bottom: 12px;
}

.path-card:hover {
  border-color: var(--accent);
  background: var(--bg-card-hover);
}

.path-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  flex-shrink: 0;
}

.path-info { flex: 1; }

.path-info .path-title {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 2px;
}

.path-info .path-desc {
  font-size: 13px;
  color: var(--text-muted);
}

.path-count {
  font-size: 12px;
  color: var(--text-muted);
  white-space: nowrap;
}

/* Concept inline tag */
.concept-tag {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 4px;
  font-size: 12px;
  font-weight: 600;
  font-family: var(--font-mono);
  background: var(--bg-tertiary);
  border: 1px solid var(--border);
  color: var(--accent);
}