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

:root {
  --color-primary: #dc2626;
  --color-secondary: #991b1b;
  --color-accent: #fca5a5;
  --color-bg: #ffffff;
  --color-surface: #fef2f2;
  --color-text: #1c1917;
  --color-text-muted: #78716c;
  --color-border: #e7e5e4;
  --font-main: 'Verdana', 'Geneva', 'Tahoma', sans-serif;
  --max-width: 1100px;
  --radius: 12px;
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;
  --transition: 0.2s ease;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-main);
  font-size: 16px;
  line-height: 1.6;
  color: var(--color-text);
  background-color: var(--color-bg);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: var(--spacing-sm);
  color: var(--color-text);
}

h1 {
  font-size: 2.5rem;
  margin-bottom: var(--spacing-md);
}

h2 {
  font-size: 2rem;
  margin-bottom: var(--spacing-md);
}

h3 {
  font-size: 1.5rem;
}

h4 {
  font-size: 1.25rem;
}

h5 {
  font-size: 1.125rem;
}

h6 {
  font-size: 1rem;
}

p {
  margin-bottom: var(--spacing-sm);
}

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color var(--transition), background-color var(--transition);
}

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

a:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
  border-radius: 2px;
}

strong {
  font-weight: 700;
  color: var(--color-text);
}

em {
  font-style: italic;
  color: var(--color-text-muted);
}

::selection {
  background-color: var(--color-accent);
  color: var(--color-secondary);
}

blockquote {
  background: linear-gradient(135deg, var(--color-surface) 0%, rgba(254, 242, 242, 0.5) 100%);
  border-left: 4px solid var(--color-primary);
  padding: var(--spacing-md);
  margin: var(--spacing-md) 0;
  font-style: italic;
  color: var(--color-text-muted);
  border-radius: var(--radius);
  backdrop-filter: blur(10px);
  position: relative;
}

blockquote::before {
  content: '"';
  font-size: 3rem;
  color: var(--color-accent);
  position: absolute;
  top: -10px;
  left: 10px;
  opacity: 0.3;
}

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--spacing-md);
  width: 100%;
}

.site-header {
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  z-index: 1000;
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
  transition: box-shadow var(--transition);
}

.site-header:hover {
  box-shadow: 0 6px 12px rgba(0, 0, 0, 0.1);
}

.site-header .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: var(--spacing-sm);
  padding-bottom: var(--spacing-sm);
  gap: var(--spacing-md);
}

.site-nav {
  display: flex;
  gap: var(--spacing-md);
  align-items: center;
  flex-wrap: wrap;
}

.site-nav a {
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--radius);
  transition: background-color var(--transition), color var(--transition), box-shadow var(--transition);
  font-weight: 600;
}

.site-nav a:hover {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
  color: var(--color-bg);
  text-decoration: none;
  box-shadow: 0 4px 8px rgba(220, 38, 38, 0.3);
}

.site-nav a:focus-visible {
  background-color: var(--color-surface);
}

.site-main {
  flex: 1;
  padding: var(--spacing-xl) 0;
}

.site-footer {
  background: linear-gradient(135deg, var(--color-secondary) 0%, var(--color-primary) 100%);
  color: var(--color-bg);
  padding: var(--spacing-lg) 0;
  margin-top: auto;
  border-top: 3px solid var(--color-accent);
}

.site-footer a {
  color: var(--color-accent);
}

.site-footer a:hover {
  color: var(--color-bg);
}

.breadcrumbs {
  display: flex;
  gap: var(--spacing-xs);
  flex-wrap: wrap;
  margin-bottom: var(--spacing-md);
  padding: var(--spacing-sm);
  background: rgba(254, 242, 242, 0.6);
  backdrop-filter: blur(8px);
  border-radius: var(--radius);
  font-size: 0.875rem;
  border: 1px solid var(--color-border);
}

.breadcrumbs a {
  color: var(--color-text-muted);
}

.breadcrumbs a:hover {
  color: var(--color-primary);
}

.breadcrumbs::after {
  content: '/';
  margin: 0 var(--spacing-xs);
  color: var(--color-text-muted);
}

.breadcrumbs:last-child::after {
  display: none;
}

.card {
  background: rgba(255, 255, 255, 0.7);
  backdrop-filter: blur(15px);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: var(--spacing-md);
  margin-bottom: var(--spacing-md);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
  transition: box-shadow var(--transition), transform var(--transition), border-color var(--transition);
  position: relative;
  overflow: hidden;
}

.card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--color-primary) 0%, var(--color-accent) 100%);
  opacity: 0;
  transition: opacity var(--transition);
}

.card:hover {
  box-shadow: 0 8px 16px rgba(220, 38, 38, 0.15);
  border-color: var(--color-accent);
  transform: translateY(-2px);
}

.card:hover::before {
  opacity: 1;
}

.card h3 {
  color: var(--color-primary);
}

table {
  width: 100%;
  border-collapse: collapse;
  margin: var(--spacing-md) 0;
  background: rgba(255, 255, 255, 0.8);
  backdrop-filter: blur(10px);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
}

table thead {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
  color: var(--color-bg);
}

table th {
  padding: var(--spacing-sm);
  text-align: left;
  font-weight: 700;
  border-bottom: 2px solid var(--color-secondary);
}

table td {
  padding: var(--spacing-sm);
  border-bottom: 1px solid var(--color-border);
}

table tbody tr {
  transition: background-color var(--transition);
}

table tbody tr:nth-child(even) {
  background: rgba(254, 242, 242, 0.3);
}

table tbody tr:hover {
  background: rgba(252, 165, 165, 0.2);
  backdrop-filter: blur(8px);
}

details {
  background: rgba(255, 255, 255, 0.75);
  backdrop-filter: blur(12px);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: var(--spacing-sm);
  margin-bottom: var(--spacing-sm);
  transition: box-shadow var(--transition), border-color var(--transition);
}

details:hover {
  border-color: var(--color-accent);
  box-shadow: 0 4px 12px rgba(220, 38, 38, 0.1);
}

details[open] {
  border-color: var(--color-primary);
  box-shadow: 0 6px 16px rgba(220, 38, 38, 0.15);
}

summary {
  cursor: pointer;
  font-weight: 600;
  padding: var(--spacing-xs);
  color: var(--color-primary);
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: color var(--transition);
  user-select: none;
}

summary::-webkit-details-marker {
  display: none;
}

summary::after {
  content: '+';
  font-size: 1.5rem;
  transition: transform var(--transition);
  color: var(--color-primary);
}

details[open] summary::after {
  transform: rotate(45deg);
}

summary:hover {
  color: var(--color-secondary);
}

summary:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
  border-radius: var(--radius);
}

details p {
  padding: var(--spacing-sm);
  padding-top: var(--spacing-md);
  color: var(--color-text);
}

@media (min-width: 768px) {
  h1 {
    font-size: 3rem;
  }
  
  h2 {
    font-size: 2.25rem;
  }
  
  .site-header .container {
    padding-top: var(--spacing-md);
    padding-bottom: var(--spacing-md);
  }
  
  .site-nav {
    gap: var(--spacing-lg);
  }
  
  .site-main {
    padding: var(--spacing-xl) 0;
  }
  
  .container {
    padding: 0 var(--spacing-lg);
  }
  
  .card {
    padding: var(--spacing-lg);
  }
}

@media (min-width: 1024px) {
  h1 {
    font-size: 3.5rem;
  }
  
  .site-main {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
  }
  
  .card {
    padding: var(--spacing-xl);
  }
}

button, input[type="submit"], input[type="button"] {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
  color: var(--color-bg);
  border: none;
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--radius);
  font-family: var(--font-main);
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: box-shadow var(--transition), transform var(--transition);
  box-shadow: 0 2px 8px rgba(220, 38, 38, 0.3);
}

button:hover, input[type="submit"]:hover, input[type="button"]:hover {
  box-shadow: 0 4px 12px rgba(220, 38, 38, 0.4);
  transform: translateY(-2px);
}

button:focus-visible, input[type="submit"]:focus-visible, input[type="button"]:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

input[type="text"], input[type="email"], input[type="password"], textarea, select {
  width: 100%;
  padding: var(--spacing-sm);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  font-family: var(--font-main);
  font-size: 1rem;
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(8px);
  transition: border-color var(--transition), box-shadow var(--transition);
}

input:focus, textarea:focus, select:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(220, 38, 38, 0.1);
}

textarea {
  min-height: 120px;
  resize: vertical;
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

@media print {
  .site-header, .site-nav, .site-footer {
    display: none;
  }
  
  .site-main {
    padding: 0;
  }
  
  .container {
    max-width: 100%;
    padding: 0;
  }
  
  .card {
    box-shadow: none;
    border: 1px solid #000;
    page-break-inside: avoid;
  }
  
  a {
    text-decoration: underline;
    color: #000;
  }
  
  body {
    background: #fff;
    color: #000;
  }
}