/* 404.es - Estilo Moderno y Minimalista */
/* Actualizado 2026 - Dark Mode por defecto */

/* Variables para modo oscuro (por defecto) */
:root {
  --color-bg: #0d1117;
  --color-surface: #161b22;
  --color-text: #e6edf3;
  --color-text-light: #8b949e;
  --color-primary: #58a6ff;
  --color-accent: #f85149;
  --color-border: #30363d;
  --color-link: #58a6ff;
  --color-link-hover: #79c0ff;
  --color-link-visited: #a371f7;
  --font-main: system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  --max-width: 800px;
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;
  --border-radius: 8px;
  --transition: 0.3s ease;
}

/* Variables para modo claro */
[data-theme="light"] {
  --color-bg: #ffffff;
  --color-surface: #f6f8fa;
  --color-text: #1f2328;
  --color-text-light: #656d76;
  --color-primary: #0969da;
  --color-accent: #cf222e;
  --color-border: #d0d7de;
  --color-link: #0969da;
  --color-link-hover: #0550ae;
  --color-link-visited: #8250df;
}

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

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

body {
  font-family: var(--font-main);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--color-text);
  background-color: var(--color-bg);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  transition: background-color var(--transition), color var(--transition);
}

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

/* Theme Toggle */
.theme-toggle {
  position: fixed;
  top: var(--spacing-md);
  right: var(--spacing-md);
  z-index: 1000;
}

.theme-toggle-btn {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  padding: var(--spacing-xs) var(--spacing-sm);
  background: var(--color-surface);
  color: var(--color-text);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius);
  font-size: 0.85rem;
  font-family: inherit;
  cursor: pointer;
  transition: all var(--transition);
}

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

.theme-toggle-btn .icon {
  font-size: 1.1rem;
}

/* Header */
.header {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-lg);
  padding-bottom: var(--spacing-md);
  border-bottom: 2px solid var(--color-border);
}

.header-icon {
  width: 56px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--color-accent), #ff6b6b);
  color: #fff;
  border-radius: var(--border-radius);
  font-size: 1.2rem;
  font-weight: bold;
  flex-shrink: 0;
  text-decoration: none;
  transition: transform var(--transition);
}

.header-icon:hover {
  transform: scale(1.05);
}

h1 {
  font-size: clamp(1.5rem, 4vw, 2rem);
  font-weight: 700;
  color: var(--color-text);
  line-height: 1.2;
}

/* Main content */
main {
  flex: 1;
}

.intro {
  font-size: 1.1rem;
  color: var(--color-text-light);
  margin-bottom: var(--spacing-lg);
  line-height: 1.7;
}

.section-title {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--color-primary);
  margin-bottom: var(--spacing-sm);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

/* Lists */
.content-list {
  list-style: none;
  margin-bottom: var(--spacing-lg);
}

.content-list li {
  padding: var(--spacing-md) 0;
  border-bottom: 1px solid var(--color-border);
}

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

.content-list p {
  margin-bottom: var(--spacing-xs);
  color: var(--color-text-light);
}

.content-list p:last-child {
  margin-bottom: 0;
}

.content-list a:not(.btn) {
  color: var(--color-link);
  font-weight: 500;
}

/* Links */
a {
  color: var(--color-link);
  text-decoration: none;
  transition: color var(--transition);
}

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

a:visited:not(.btn):not(.header-icon) {
  color: var(--color-link-visited);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-xs);
  padding: var(--spacing-xs) var(--spacing-sm);
  background: var(--color-primary);
  color: #fff;
  border: none;
  border-radius: var(--border-radius);
  font-size: 0.9rem;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition);
  text-decoration: none;
}

.btn:hover {
  filter: brightness(1.1);
  transform: translateY(-1px);
  text-decoration: none;
  color: #fff;
}

.btn:visited {
  color: #fff;
}

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

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

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

.btn-outline {
  background: transparent;
  color: var(--color-primary);
  border: 2px solid var(--color-primary);
}

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

.btn-outline:visited {
  color: var(--color-primary);
}

.btn-outline:hover:visited {
  color: #fff;
}

/* Error signature */
.error-signature {
  margin-top: var(--spacing-lg);
  padding: var(--spacing-md);
  background: var(--color-surface);
  border-radius: var(--border-radius);
  border-left: 4px solid var(--color-accent);
}

.error-signature strong {
  display: block;
  color: var(--color-text);
  font-size: 1rem;
  margin-bottom: var(--spacing-xs);
}

/* Navigation links */
.nav-links {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
  margin-top: var(--spacing-md);
}

/* Footer */
.footer {
  margin-top: auto;
  padding: var(--spacing-lg) var(--spacing-md);
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
  text-align: center;
  font-size: 0.85rem;
}

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

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

.footer-version {
  color: var(--color-text-light);
  margin-bottom: var(--spacing-xs);
}

.footer-links {
  margin-top: var(--spacing-sm);
}

.footer-links a {
  margin: 0 var(--spacing-xs);
}

/* Cards */
.card {
  background: var(--color-surface);
  border-radius: var(--border-radius);
  padding: var(--spacing-md);
  border: 1px solid var(--color-border);
  margin-bottom: var(--spacing-md);
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--spacing-md);
}

/* Forms */
.form-group {
  margin-bottom: var(--spacing-md);
}

.form-group label {
  display: block;
  font-weight: 500;
  margin-bottom: var(--spacing-xs);
  color: var(--color-text);
}

input[type="text"],
input[type="email"],
textarea {
  width: 100%;
  padding: var(--spacing-sm);
  background: var(--color-surface);
  color: var(--color-text);
  border: 2px solid var(--color-border);
  border-radius: var(--border-radius);
  font-family: inherit;
  font-size: 1rem;
  transition: border-color var(--transition);
}

input[type="text"]:focus,
input[type="email"]:focus,
textarea:focus {
  outline: none;
  border-color: var(--color-primary);
}

textarea {
  min-height: 150px;
  resize: vertical;
}

/* Special pages */
.memorial {
  text-align: center;
  padding: var(--spacing-xl) 0;
}

.memorial img {
  max-width: 200px;
  margin: var(--spacing-md) auto;
  border-radius: var(--border-radius);
}

.memorial h2 {
  font-size: 1.5rem;
  margin: var(--spacing-md) 0;
  color: var(--color-text);
}

.memorial h3 {
  font-size: 2rem;
  color: var(--color-accent);
  margin: var(--spacing-md) 0;
}

/* Responsive */
@media (max-width: 600px) {
  html {
    font-size: 14px;
  }

  .header {
    flex-direction: column;
    text-align: center;
  }

  .header-icon {
    width: 72px;
    height: 72px;
    font-size: 1.5rem;
  }

  .nav-links {
    flex-direction: column;
  }

  .btn {
    width: 100%;
    justify-content: center;
  }

  .theme-toggle {
    top: var(--spacing-xs);
    right: var(--spacing-xs);
  }

  .theme-toggle-btn {
    padding: var(--spacing-xs);
  }

  .theme-toggle-btn span:not(.icon) {
    display: none;
  }
}

/* Print styles */
@media print {
  .footer,
  .btn,
  .theme-toggle {
    display: none;
  }

  body {
    background: white;
    color: black;
  }

  .container {
    max-width: 100%;
  }
}

/* Accessibility */
@media (prefers-reduced-motion: reduce) {
  * {
    transition: none !important;
  }
}

/* Horizontal rule */
hr {
  border: none;
  height: 1px;
  background: var(--color-border);
  margin: var(--spacing-md) 0;
}

/* Badge for new items */
.badge-new {
  display: inline-block;
  background: var(--color-accent);
  color: #fff;
  font-size: 0.7rem;
  font-weight: 600;
  padding: 2px 8px;
  border-radius: 4px;
  margin-left: var(--spacing-xs);
  text-transform: uppercase;
}

/* Scrollbar styling for dark mode */
::-webkit-scrollbar {
  width: 10px;
}

::-webkit-scrollbar-track {
  background: var(--color-bg);
}

::-webkit-scrollbar-thumb {
  background: var(--color-border);
  border-radius: 5px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--color-text-light);
}