/* ============================================
   Modern Resume Design System
   Based on frontend-design principles
   ============================================ */

/* ============================================
   CSS Variables - Design Tokens
   ============================================ */
:root {
  /* Colors - Refined neutral palette with accent */
  --color-bg-primary: #0a0a0f;
  --color-bg-secondary: #13131a;
  --color-bg-elevated: #1a1a24;
  --color-bg-hero: linear-gradient(135deg, #1a1a24 0%, #13131a 100%);

  --color-text-primary: #e8e8f0;
  --color-text-secondary: #a8a8b8;
  --color-text-tertiary: #6e6e88;

  --color-accent-primary: #6366f1;
  --color-accent-secondary: #8b5cf6;
  --color-accent-tertiary: #06b6d4;

  --color-border: rgba(139, 92, 246, 0.1);
  --color-border-hover: rgba(139, 92, 246, 0.3);

  /* Typography - Scale with perfect ratios */
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI",
               "Hiragino Kaku Gothic ProN", Meiryo, sans-serif;
  --font-mono: "SFMono-Regular", Consolas, "Liberation Mono",
               Menlo, Courier, monospace;

  --font-size-xs: 0.75rem;    /* 12px */
  --font-size-sm: 0.875rem;   /* 14px */
  --font-size-base: 1rem;     /* 16px */
  --font-size-lg: 1.125rem;   /* 18px */
  --font-size-xl: 1.25rem;    /* 20px */
  --font-size-2xl: 1.5rem;    /* 24px */
  --font-size-3xl: 1.875rem;  /* 30px */
  --font-size-4xl: 2.25rem;   /* 36px */
  --font-size-5xl: 3rem;      /* 48px */
  --font-size-6xl: 3.75rem;   /* 60px */
  --font-size-7xl: 4.5rem;    /* 72px */
  --font-size-8xl: 6rem;      /* 96px */
  --font-size-9xl: 8rem;      /* 128px */

  /* Spacing - Consistent 8px grid */
  --space-1: 0.25rem;   /* 4px */
  --space-2: 0.5rem;    /* 8px */
  --space-3: 0.75rem;   /* 12px */
  --space-4: 1rem;      /* 16px */
  --space-5: 1.25rem;   /* 20px */
  --space-6: 1.5rem;    /* 24px */
  --space-8: 2rem;      /* 32px */
  --space-10: 2.5rem;   /* 40px */
  --space-12: 3rem;     /* 48px */
  --space-16: 4rem;     /* 64px */
  --space-20: 5rem;     /* 80px */

  /* Shadows - Layered depth */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.4),
               0 2px 4px -1px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.5),
               0 4px 6px -2px rgba(0, 0, 0, 0.3);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.5),
               0 10px 10px -5px rgba(0, 0, 0, 0.3);

  /* Border radius */
  --radius-sm: 0.375rem;  /* 6px */
  --radius-md: 0.5rem;    /* 8px */
  --radius-lg: 0.75rem;   /* 12px */
  --radius-xl: 1rem;      /* 16px */

  /* Transitions */
  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 200ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 300ms cubic-bezier(0.4, 0, 0.2, 1);

  /* Layout */
  --nav-height: 64px;
  --sidebar-width: 240px;
  --content-max-width: 1280px;
}

/* ============================================
   Reset & Base Styles
   ============================================ */
* {
  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);
  font-size: var(--font-size-base);
  line-height: 1.75;
  color: var(--color-text-primary);
  background-color: var(--color-bg-primary);
  overflow-x: hidden;
}

/* ============================================
   Navigation Header
   ============================================ */
.nav-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--nav-height);
  background-color: rgba(10, 10, 15, 0.8);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
  z-index: 100;
  transition: all var(--transition-base);
}

.nav-header.nav-scrolled {
  background-color: rgba(10, 10, 15, 0.95);
  box-shadow: var(--shadow-md);
}

.nav-container {
  max-width: var(--content-max-width);
  height: 100%;
  margin: 0 auto;
  padding: 0 var(--space-6);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-weight: 600;
  font-size: var(--font-size-lg);
}

.nav-icon {
  height: 40px;
  width: 40px;
  object-fit: cover;
  border-radius: 50%;
}

.nav-title {
  background: linear-gradient(135deg, var(--color-accent-primary), var(--color-accent-secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-6);
}

.nav-link {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  color: var(--color-text-secondary);
  text-decoration: none;
  font-size: var(--font-size-sm);
  font-weight: 500;
  transition: color var(--transition-fast);
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-md);
}

.nav-link:hover {
  color: var(--color-text-primary);
  background-color: rgba(139, 92, 246, 0.1);
}

/* ============================================
   Hero Section
   ============================================ */
.hero {
  position: relative;
  margin-top: var(--nav-height);
  padding: var(--space-20) var(--space-6);
  background: var(--color-bg-hero);
  overflow: hidden;
}

.hero::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image:
    radial-gradient(circle at 20% 50%, rgba(139, 92, 246, 0.15) 0%, transparent 50%),
    radial-gradient(circle at 80% 80%, rgba(99, 102, 241, 0.15) 0%, transparent 50%);
  pointer-events: none;
}

.hero-gradient {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 100px;
  background: linear-gradient(to bottom, transparent, var(--color-bg-primary));
}

.hero-container {
  position: relative;
  max-width: var(--content-max-width);
  margin: 0 auto;
  z-index: 1;
}

.hero-content {
  text-align: center;
  animation: fadeInUp 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

.hero-badge {
  display: inline-block;
  padding: var(--space-2) var(--space-4);
  background: rgba(139, 92, 246, 0.1);
  border: 1px solid rgba(139, 92, 246, 0.2);
  border-radius: var(--radius-xl);
  color: var(--color-accent-secondary);
  font-size: var(--font-size-sm);
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  margin-bottom: var(--space-6);
}

.hero-title {
  font-size: var(--font-size-5xl);
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: var(--space-3);
  background: linear-gradient(135deg, var(--color-text-primary) 0%, var(--color-text-secondary) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: var(--font-size-xl);
  color: var(--color-text-secondary);
  margin-bottom: var(--space-8);
  font-weight: 500;
}

.hero-description {
  font-size: var(--font-size-lg);
  color: var(--color-text-secondary);
  line-height: 1.8;
  max-width: 800px;
  margin: 0 auto;
}

.hero-br {
  display: none;
}

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

/* ============================================
   Main Content Layout
   ============================================ */
.main-container {
  max-width: var(--content-max-width);
  margin: 0 auto;
  padding: var(--space-12) var(--space-6);
  padding-bottom: 300px; /* Space for footer character on mobile */
  position: relative;
}

/* Night sky gradient before footer - seamless blend */
.main-container::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 100vw;
  height: 600px;
  background:
    /* Very smooth gradient with many steps for seamless transition */
    linear-gradient(
      to bottom,
      rgba(10, 10, 15, 0) 0%,
      rgba(10, 10, 15, 0.002) 10%,
      rgba(10, 10, 15, 0.005) 15%,
      rgba(10, 10, 15, 0.01) 20%,
      rgba(10, 10, 16, 0.018) 25%,
      rgba(10, 10, 16, 0.028) 30%,
      rgba(10, 10, 17, 0.04) 35%,
      rgba(10, 10, 18, 0.055) 40%,
      rgba(10, 10, 19, 0.073) 45%,
      rgba(10, 10, 20, 0.095) 50%,
      rgba(10, 10, 22, 0.12) 55%,
      rgba(10, 10, 24, 0.15) 60%,
      rgba(10, 10, 26, 0.19) 65%,
      rgba(10, 10, 28, 0.24) 70%,
      rgba(11, 11, 32, 0.32) 75%,
      rgba(11, 11, 34, 0.43) 80%,
      rgba(12, 12, 38, 0.58) 85%,
      rgba(13, 13, 40, 0.75) 90%,
      rgba(14, 14, 43, 0.88) 95%,
      rgba(16, 16, 50, 1) 100%
    );
  pointer-events: none;
  z-index: 0;
}

/* Stars layer */
.main-container::before {
  content: "";
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 100vw;
  height: 600px;
  background-image:
    radial-gradient(circle at 20% 40%, rgba(99, 102, 241, 0.15) 0%, transparent 40%),
    radial-gradient(circle at 80% 60%, rgba(139, 92, 246, 0.12) 0%, transparent 40%),
    radial-gradient(2px 2px at 20% 30%, white, transparent),
    radial-gradient(1px 1px at 60% 70%, white, transparent),
    radial-gradient(3px 3px at 50% 50%, rgba(255, 255, 255, 0.8), transparent),
    radial-gradient(1.5px 1.5px at 80% 10%, white, transparent),
    radial-gradient(2px 2px at 90% 60%, rgba(255, 255, 255, 0.9), transparent),
    radial-gradient(1px 1px at 15% 80%, rgba(255, 255, 255, 0.7), transparent),
    radial-gradient(2px 2px at 85% 20%, white, transparent),
    radial-gradient(1px 1px at 35% 15%, rgba(255, 255, 255, 0.8), transparent),
    radial-gradient(1.5px 1.5px at 70% 85%, white, transparent),
    radial-gradient(1px 1px at 45% 60%, rgba(255, 255, 255, 0.6), transparent),
    radial-gradient(2px 2px at 25% 45%, rgba(255, 255, 255, 0.9), transparent),
    radial-gradient(2px 2px at 55% 25%, rgba(255, 255, 255, 0.8), transparent),
    radial-gradient(1px 1px at 75% 45%, rgba(255, 255, 255, 0.7), transparent),
    radial-gradient(1.5px 1.5px at 40% 75%, white, transparent);
  background-size:
    100% 100%,
    100% 100%,
    200px 200px,
    300px 300px,
    250px 250px,
    280px 280px,
    220px 220px,
    180px 180px,
    240px 240px,
    350px 350px,
    320px 320px,
    400px 400px,
    270px 270px,
    310px 310px,
    260px 260px,
    290px 290px;
  background-position: 0 0;
  background-repeat: repeat;
  pointer-events: none;
  z-index: 1;
  /* Fade out stars at the top */
  mask-image: linear-gradient(to bottom, transparent 0%, black 20%, black 100%);
  -webkit-mask-image: linear-gradient(to bottom, transparent 0%, black 20%, black 100%);
}

.content-wrapper {
  display: grid;
  grid-template-columns: var(--sidebar-width) 1fr;
  gap: var(--space-12);
  align-items: start;
  position: relative;
  z-index: 2;
}

/* ============================================
   Sidebar Navigation
   ============================================ */
.sidebar {
  position: relative;
}

.sidebar-sticky {
  position: sticky;
  top: calc(var(--nav-height) + var(--space-6));
}

.sidebar-nav {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.sidebar-link {
  padding: var(--space-3) var(--space-4);
  color: var(--color-text-tertiary);
  text-decoration: none;
  font-size: var(--font-size-sm);
  font-weight: 500;
  border-left: 2px solid transparent;
  transition: all var(--transition-fast);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
}

.sidebar-link:hover {
  color: var(--color-text-secondary);
  background-color: rgba(139, 92, 246, 0.05);
  border-left-color: rgba(139, 92, 246, 0.3);
}

.sidebar-link.active {
  color: var(--color-accent-secondary);
  background-color: rgba(139, 92, 246, 0.1);
  border-left-color: var(--color-accent-secondary);
}

/* ============================================
   Content Area
   ============================================ */
.content {
  min-width: 0;
}

/* Animation on scroll */
.animate-on-scroll {
  opacity: 0;
  transform: translateY(20px);
}

.animate-on-scroll.fade-in {
  animation: fadeInContent 0.6s cubic-bezier(0.4, 0, 0.2, 1) forwards;
}

@keyframes fadeInContent {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ============================================
   Typography
   ============================================ */
.content h1 {
  font-size: var(--font-size-3xl);
  font-weight: 700;
  line-height: 1.3;
  color: var(--color-text-primary);
  margin-bottom: var(--space-4);
  padding-bottom: var(--space-4);
  border-bottom: 2px solid var(--color-border);
}

.content h2 {
  font-size: var(--font-size-2xl);
  font-weight: 700;
  line-height: 1.4;
  color: var(--color-text-primary);
  margin-top: var(--space-12);
  margin-bottom: var(--space-6);
  padding-bottom: var(--space-3);
  border-bottom: 1px solid var(--color-border);
  position: relative;
}

.content h2::before {
  content: "";
  position: absolute;
  bottom: -1px;
  left: 0;
  width: 60px;
  height: 2px;
  background: linear-gradient(90deg, var(--color-accent-primary), var(--color-accent-secondary));
}

.content h3 {
  font-size: var(--font-size-xl);
  font-weight: 600;
  line-height: 1.4;
  color: var(--color-text-primary);
  margin-top: var(--space-8);
  margin-bottom: var(--space-4);
}

.content h4 {
  font-size: var(--font-size-lg);
  font-weight: 600;
  line-height: 1.5;
  color: var(--color-text-secondary);
  margin-top: var(--space-6);
  margin-bottom: var(--space-3);
}

.content p {
  margin-bottom: var(--space-5);
  color: var(--color-text-secondary);
}

.content a {
  color: var(--color-accent-tertiary);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: all var(--transition-fast);
}

.content a:hover {
  color: var(--color-accent-primary);
  border-bottom-color: var(--color-accent-primary);
}

/* ============================================
   Lists
   ============================================ */
.content ul,
.content ol {
  margin-bottom: var(--space-5);
  padding-left: var(--space-8);
}

.content li {
  margin-bottom: var(--space-3);
  color: var(--color-text-secondary);
  line-height: 1.8;
}

.content li::marker {
  color: var(--color-accent-secondary);
}

/* ============================================
   Code
   ============================================ */
.content pre {
  background-color: var(--color-bg-secondary);
  padding: var(--space-6);
  border-radius: var(--radius-lg);
  overflow-x: auto;
  margin-bottom: var(--space-6);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-sm);
}

.content code {
  font-family: var(--font-mono);
  font-size: 0.9em;
  background-color: rgba(139, 92, 246, 0.1);
  color: var(--color-accent-tertiary);
  padding: var(--space-1) var(--space-2);
  border-radius: var(--radius-sm);
  border: 1px solid rgba(139, 92, 246, 0.2);
}

.content pre code {
  background-color: transparent;
  padding: 0;
  border-radius: 0;
  border: none;
  color: inherit;
}

/* ============================================
   Blockquotes
   ============================================ */
.content blockquote {
  border-left: 3px solid var(--color-accent-secondary);
  padding: var(--space-5) var(--space-6);
  margin: var(--space-6) 0;
  background-color: rgba(139, 92, 246, 0.05);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  color: var(--color-text-secondary);
  font-style: italic;
}

/* ============================================
   Tables
   ============================================ */
.content table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
  margin-bottom: var(--space-6);
  background-color: var(--color-bg-elevated);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
}

.content th {
  background-color: rgba(139, 92, 246, 0.1);
  color: var(--color-text-primary);
  font-weight: 600;
  text-align: left;
  padding: var(--space-4) var(--space-5);
  border-bottom: 2px solid var(--color-border);
}

.content td {
  padding: var(--space-4) var(--space-5);
  border-bottom: 1px solid var(--color-border);
  color: var(--color-text-secondary);
}

.content tbody tr {
  transition: background-color var(--transition-fast);
}

.content tbody tr:hover {
  background-color: rgba(139, 92, 246, 0.05);
}

.content tbody tr:last-child td {
  border-bottom: none;
}

/* ============================================
   Horizontal Rule
   ============================================ */
.content hr {
  border: none;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--color-border), transparent);
  margin: var(--space-10) 0;
}

/* ============================================
   Footer
   ============================================ */
.footer {
  background: linear-gradient(to bottom, rgba(16, 16, 50, 1), var(--color-bg-secondary));
  border-top: none;
  padding: var(--space-20) var(--space-6) var(--space-12);
  margin-top: 0;
  position: relative;
  overflow: visible;
}

.footer::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image:
    radial-gradient(circle at 30% 20%, rgba(99, 102, 241, 0.1) 0%, transparent 50%),
    radial-gradient(circle at 70% 80%, rgba(139, 92, 246, 0.1) 0%, transparent 50%);
  pointer-events: none;
}

.footer-container {
  position: relative;
  width: 100%;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-8);
  z-index: 1;
}

.footer-brand {
  text-align: center;
  width: 100%;
}

.footer-name {
  font-size: clamp(4rem, 20vw, 20rem);
  font-weight: 900;
  line-height: 1;
  margin-bottom: var(--space-4);
  background: linear-gradient(135deg, var(--color-text-primary) 0%, var(--color-text-secondary) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: -0.05em;
  width: 100%;
  white-space: nowrap;
  overflow: visible;
  text-align: center;
  transform: scaleX(1.2);
}

.footer-title {
  font-size: var(--font-size-2xl);
  color: var(--color-text-secondary);
  font-weight: 500;
  margin: 0;
}

.footer-links {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-6);
  flex-wrap: wrap;
}

.footer-link {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  color: var(--color-text-secondary);
  text-decoration: none;
  font-size: var(--font-size-base);
  font-weight: 500;
  padding: var(--space-3) var(--space-5);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  background-color: rgba(26, 26, 36, 0.5);
  transition: all var(--transition-base);
}

.footer-link:hover {
  color: var(--color-text-primary);
  border-color: var(--color-border-hover);
  background-color: rgba(139, 92, 246, 0.1);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.footer-text {
  color: var(--color-text-tertiary);
  font-size: var(--font-size-sm);
  margin: 0;
  padding-top: var(--space-6);
  border-top: 1px solid var(--color-border);
  width: 100%;
  text-align: center;
}

/* ============================================
   Footer Character
   ============================================ */
.footer-character {
  position: absolute;
  top: -230px;
  right: 10%;
  width: 380px;
  height: 380px;
  z-index: 10;
  pointer-events: none;
}

.footer-character img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  object-position: bottom;
  filter: drop-shadow(0 10px 20px rgba(0, 0, 0, 0.3));
}

/* ============================================
   Error Message
   ============================================ */
.error-message {
  padding: var(--space-6);
  background-color: rgba(239, 68, 68, 0.1);
  border: 1px solid rgba(239, 68, 68, 0.3);
  border-radius: var(--radius-lg);
  color: #fca5a5;
  text-align: center;
}

/* ============================================
   Responsive Design
   ============================================ */
@media (max-width: 1024px) {
  .content-wrapper {
    grid-template-columns: 1fr;
  }

  .sidebar {
    display: none;
  }
}

@media (max-width: 768px) {
  :root {
    --space-20: 3rem;
    --space-16: 2.5rem;
    --space-12: 2rem;
  }

  .nav-container {
    padding: 0 var(--space-4);
  }

  .nav-brand {
    font-size: var(--font-size-base);
  }

  .nav-icon {
    height: 32px;
    width: 32px;
  }

  .nav-links {
    gap: var(--space-3);
  }

  .hero {
    padding: var(--space-16) var(--space-4);
  }

  .hero-title {
    font-size: var(--font-size-3xl);
  }

  .hero-subtitle {
    font-size: var(--font-size-lg);
  }

  .hero-description {
    font-size: var(--font-size-base);
  }

  .hero-br {
    display: block;
  }

  .main-container {
    padding: var(--space-8) var(--space-4);
    padding-bottom: 280px;
  }

  .main-container::after {
    height: 550px;
  }

  .main-container::before {
    height: 550px;
  }

  .content h1 {
    font-size: var(--font-size-2xl);
  }

  .content h2 {
    font-size: var(--font-size-xl);
    margin-top: var(--space-8);
  }

  .content h3 {
    font-size: var(--font-size-lg);
  }
}

@media (max-width: 480px) {
  .nav-title {
    display: none;
  }

  .nav-link svg {
    display: none;
  }

  .hero-title {
    font-size: var(--font-size-2xl);
  }

  .hero-subtitle {
    font-size: var(--font-size-base);
  }

  .hero-description {
    font-size: var(--font-size-sm);
  }

  .content pre {
    padding: var(--space-4);
  }

  .content table {
    font-size: var(--font-size-sm);
  }

  .content th,
  .content td {
    padding: var(--space-3);
  }

  .footer {
    padding: var(--space-16) var(--space-4) var(--space-8);
  }

  .footer-name {
    font-size: clamp(2.5rem, 18vw, 8rem);
    transform: scaleX(1.1);
  }

  .footer-title {
    font-size: var(--font-size-xl);
  }

  .footer-links {
    gap: var(--space-3);
  }

  .footer-link {
    font-size: var(--font-size-sm);
    padding: var(--space-2) var(--space-4);
  }

  .main-container {
    padding-bottom: 240px;
  }

  .main-container::after {
    height: 500px;
  }

  .main-container::before {
    height: 500px;
  }

  .footer-character {
    top: -160px;
    right: 5%;
    width: 260px;
    height: 260px;
  }
}

/* ============================================
   Print Styles
   ============================================ */
@media print {
  .nav-header,
  .sidebar,
  .footer {
    display: none;
  }

  .hero {
    margin-top: 0;
    padding: var(--space-8) 0;
    background: none;
  }

  .main-container {
    padding: 0;
  }

  .content h2 {
    page-break-after: avoid;
  }

  .content table,
  .content pre {
    page-break-inside: avoid;
  }
}