/* Dartist - Unified Styles */

:root {
  /* Colors */
  --color-primary: #10D98C;
  --color-primary-dark: #0CB87A;
  --color-primary-glow: rgba(16, 217, 140, 0.15);
  --color-background: #0A0A0F;
  --color-background-gradient: linear-gradient(135deg, #0A0A0F 0%, #12121A 50%, #0A0A0F 100%);
  --color-surface: rgba(255, 255, 255, 0.03);
  --color-surface-elevated: rgba(255, 255, 255, 0.06);
  --color-surface-hover: rgba(255, 255, 255, 0.08);
  --color-text: #FFFFFF;
  --color-text-secondary: rgba(255, 255, 255, 0.7);
  --color-text-muted: rgba(255, 255, 255, 0.5);
  --color-border: rgba(255, 255, 255, 0.08);
  --color-border-hover: rgba(255, 255, 255, 0.15);
  --color-danger: #ef4444;
  --color-warning: #f59e0b;

  /* Typography */
  --font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;

  /* Layout */
  --max-width: 720px;
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;
  --spacing-2xl: 4rem;
  --border-radius: 12px;
  --border-radius-lg: 16px;

  /* Transitions */
  --transition-fast: 0.15s ease;
  --transition-normal: 0.2s ease;
  --transition-slow: 0.3s ease;
}

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

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

body {
  font-family: var(--font-family);
  background: var(--color-background);
  background-image: var(--color-background-gradient);
  background-attachment: fixed;
  color: var(--color-text);
  line-height: 1.7;
  font-size: 16px;
  min-height: 100vh;
}

/* Container */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: var(--spacing-lg) var(--spacing-md);
}

/* Header */
header {
  text-align: center;
  padding: var(--spacing-2xl) var(--spacing-md) var(--spacing-xl);
  border-bottom: 1px solid var(--color-border);
  margin-bottom: var(--spacing-lg);
  background: linear-gradient(180deg, rgba(16, 217, 140, 0.03) 0%, transparent 100%);
}

.logo-icon {
  width: 72px;
  height: 72px;
  margin-bottom: var(--spacing-md);
  filter: drop-shadow(0 0 20px rgba(16, 217, 140, 0.3));
  transition: transform var(--transition-normal), filter var(--transition-normal);
}

.logo-icon:hover {
  transform: scale(1.05);
  filter: drop-shadow(0 0 30px rgba(16, 217, 140, 0.5));
}

.logo {
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: var(--spacing-xs);
  letter-spacing: -0.02em;
  text-shadow: 0 0 40px rgba(16, 217, 140, 0.3);
}

.subtitle {
  color: var(--color-text-secondary);
  font-size: 1.1rem;
  font-weight: 400;
}

/* Navigation */
nav {
  display: flex;
  justify-content: center;
  gap: var(--spacing-xs);
  margin-top: var(--spacing-lg);
  flex-wrap: wrap;
}

nav a {
  color: var(--color-text-muted);
  text-decoration: none;
  padding: 0.6rem 1rem;
  border-radius: 8px;
  transition: all var(--transition-normal);
  font-size: 0.9rem;
  font-weight: 500;
  border: 1px solid transparent;
}

nav a:hover {
  color: var(--color-text);
  background-color: var(--color-surface-hover);
  border-color: var(--color-border);
}

nav a.active {
  color: var(--color-primary);
  background-color: var(--color-primary-glow);
  border-color: rgba(16, 217, 140, 0.2);
}

/* Language Switcher */
.language-switcher {
  display: flex;
  justify-content: flex-end;
  gap: var(--spacing-xs);
  margin-bottom: var(--spacing-lg);
}

.language-switcher a {
  color: var(--color-text-muted);
  text-decoration: none;
  padding: 6px 14px;
  border-radius: 20px;
  font-size: 0.85rem;
  font-weight: 500;
  border: 1px solid var(--color-border);
  transition: all var(--transition-normal);
}

.language-switcher a:hover {
  color: var(--color-text);
  border-color: var(--color-border-hover);
  background: var(--color-surface);
}

.language-switcher a.active {
  color: var(--color-primary);
  border-color: var(--color-primary);
  background: var(--color-primary-glow);
}

/* Main Content */
main {
  padding-bottom: var(--spacing-xl);
}

/* Typography */
h1 {
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: var(--spacing-md);
  color: var(--color-text);
  line-height: 1.3;
  letter-spacing: -0.01em;
}

h2 {
  font-size: 1.4rem;
  font-weight: 600;
  margin-top: var(--spacing-2xl);
  margin-bottom: var(--spacing-md);
  color: var(--color-text);
  padding-bottom: var(--spacing-sm);
  border-bottom: 2px solid var(--color-primary);
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

h2::before {
  content: '';
  width: 4px;
  height: 24px;
  background: var(--color-primary);
  border-radius: 2px;
  box-shadow: 0 0 10px var(--color-primary);
}

h3 {
  font-size: 1.15rem;
  font-weight: 600;
  margin-top: var(--spacing-lg);
  margin-bottom: var(--spacing-sm);
  color: var(--color-text);
}

h4 {
  font-size: 1rem;
  font-weight: 600;
  margin-top: var(--spacing-md);
  margin-bottom: var(--spacing-sm);
  color: var(--color-text-secondary);
}

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

strong {
  color: var(--color-text);
  font-weight: 600;
}

/* Lists */
ul, ol {
  margin-bottom: var(--spacing-sm);
  padding-left: var(--spacing-lg);
  color: var(--color-text-secondary);
}

li {
  margin-bottom: var(--spacing-xs);
  padding-left: var(--spacing-xs);
}

li::marker {
  color: var(--color-primary);
}

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

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

/* Tables */
table {
  width: 100%;
  border-collapse: collapse;
  margin: var(--spacing-md) 0;
  background-color: var(--color-surface);
  border-radius: var(--border-radius);
  overflow: hidden;
  border: 1px solid var(--color-border);
}

th, td {
  padding: var(--spacing-sm) var(--spacing-md);
  text-align: left;
  border-bottom: 1px solid var(--color-border);
}

th {
  background-color: var(--color-surface-elevated);
  font-weight: 600;
  color: var(--color-text);
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

td {
  color: var(--color-text-secondary);
}

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

tr:hover td {
  background-color: var(--color-surface-hover);
}

/* Info Boxes */
.info-box {
  background: linear-gradient(135deg, var(--color-primary-glow) 0%, transparent 100%);
  border: 1px solid rgba(16, 217, 140, 0.2);
  border-left: 4px solid var(--color-primary);
  padding: var(--spacing-md);
  margin: var(--spacing-lg) 0;
  border-radius: 0 var(--border-radius) var(--border-radius) 0;
}

.info-box p {
  margin: 0;
  color: var(--color-text-secondary);
}

.info-box strong {
  color: var(--color-primary);
}

.warning-box {
  background: linear-gradient(135deg, rgba(245, 158, 11, 0.1) 0%, transparent 100%);
  border: 1px solid rgba(245, 158, 11, 0.2);
  border-left: 4px solid var(--color-warning);
  padding: var(--spacing-md);
  margin: var(--spacing-lg) 0;
  border-radius: 0 var(--border-radius) var(--border-radius) 0;
}

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

.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-lg);
  padding: var(--spacing-lg);
  transition: all var(--transition-normal);
  text-decoration: none;
  display: block;
}

.card:hover {
  border-color: var(--color-primary);
  background: var(--color-surface-elevated);
  transform: translateY(-4px);
  box-shadow: 0 12px 40px rgba(16, 217, 140, 0.1);
  text-decoration: none;
}

.card h3 {
  margin-top: 0;
  color: var(--color-text);
}

.card p {
  color: var(--color-text-muted);
  margin-bottom: 0;
}

/* Meta Info */
.meta {
  color: var(--color-text-muted);
  font-size: 0.9rem;
  margin-bottom: var(--spacing-lg);
  padding: var(--spacing-sm) var(--spacing-md);
  background: var(--color-surface);
  border-radius: var(--border-radius);
  display: inline-block;
}

/* Footer */
footer {
  text-align: center;
  padding: var(--spacing-lg) var(--spacing-md);
  border-top: 1px solid var(--color-border);
  margin-top: var(--spacing-2xl);
  color: var(--color-text-muted);
  font-size: 0.9rem;
  background: linear-gradient(180deg, transparent 0%, rgba(16, 217, 140, 0.02) 100%);
}

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

footer p:last-child {
  margin-bottom: 0;
}

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

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

/* Contact Section */
.contact-info {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  padding: var(--spacing-lg);
  border-radius: var(--border-radius-lg);
  margin-top: var(--spacing-md);
}

.contact-info p {
  margin-bottom: var(--spacing-xs);
}

.contact-info p:last-child {
  margin-bottom: 0;
}

.contact-info strong {
  color: var(--color-text);
}

/* Back to Top */
.back-to-top {
  position: fixed;
  bottom: var(--spacing-lg);
  right: var(--spacing-lg);
  background: var(--color-primary);
  color: var(--color-background);
  width: 48px;
  height: 48px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-slow);
  font-size: 1.5rem;
  box-shadow: 0 4px 20px rgba(16, 217, 140, 0.3);
}

.back-to-top.visible {
  opacity: 1;
  visibility: visible;
}

.back-to-top:hover {
  background: var(--color-primary-dark);
  transform: translateY(-4px);
  box-shadow: 0 8px 30px rgba(16, 217, 140, 0.4);
}

/* Responsive */
@media (max-width: 600px) {
  :root {
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 2.5rem;
  }

  header {
    padding: var(--spacing-xl) var(--spacing-md) var(--spacing-lg);
  }

  .logo-icon {
    width: 56px;
    height: 56px;
  }

  .logo {
    font-size: 2rem;
  }

  h1 {
    font-size: 1.6rem;
  }

  h2 {
    font-size: 1.2rem;
  }

  h2::before {
    height: 20px;
  }

  table {
    font-size: 0.85rem;
  }

  th, td {
    padding: var(--spacing-sm) var(--spacing-xs);
  }

  .card-grid {
    grid-template-columns: 1fr;
  }

  nav {
    gap: 4px;
  }

  nav a {
    padding: 0.5rem 0.75rem;
    font-size: 0.85rem;
  }
}

/* Print Styles */
@media print {
  body {
    background: white;
    color: black;
  }

  .container {
    max-width: 100%;
  }

  header, footer, nav, .language-switcher, .back-to-top {
    display: none;
  }

  h2 {
    border-bottom-color: black;
  }

  h2::before {
    display: none;
  }

  a {
    color: black;
    text-decoration: underline;
  }

  .info-box, .warning-box {
    border: 1px solid #ccc;
    background: #f5f5f5;
  }

  table {
    border: 1px solid #ccc;
  }

  th {
    background: #eee;
  }
}