/* ==========================================================================
   PowerPortals.de - Custom CSS
   ========================================================================== */

/* ==========================================================================
   Accessibility Utilities
   ========================================================================== */

/* Screen reader only content */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border-width: 0;
}

.sr-only:focus,
.sr-only:active {
  position: static;
  width: auto;
  height: auto;
  overflow: visible;
  clip: auto;
  white-space: normal;
}

/* Focus visible for keyboard navigation */
*:focus-visible {
  outline: 3px solid #bf00ff;
  outline-offset: 3px;
}

/* Skip to main content link */
.skip-link {
  position: absolute;
  top: -40px;
  left: 0;
  background: #667eea;
  color: white;
  padding: 8px 16px;
  text-decoration: none;
  z-index: 100;
  font-weight: bold;
  border-radius: 0 0 4px 0;
}

.skip-link:focus {
  top: 0;
}

/* Reduced motion support */
@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;
  }
}

/* CSS Variables */
:root {
  /* Primary Gradient */
  --gradient-primary: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  --gradient-secondary: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);

  /* Neon Colors */
  --neon-green: #00ff88;
  --neon-purple: #bf00ff;
  --neon-blue: #00d4ff;

  /* Neutral */
  --dark: #2D2D2D;
  --gray: #666666;
  --light-gray: #F3F2EF;
  --white: #FFFFFF;

  /* Typography */
  --font-primary: 'Segoe UI', system-ui, -apple-system, sans-serif;

  /* Light Mode Colors (Default) */
  --bg-primary: #FFFFFF;
  --bg-secondary: #F9FAFB;
  --bg-tertiary: #F3F4F6;
  --text-primary: #1F2937;
  --text-secondary: #4B5563;
  --text-tertiary: #6B7280;
  --border-color: #E5E7EB;
  --card-bg: #FFFFFF;
  --nav-bg: rgba(255, 255, 255, 0.95);
  --shadow-color: rgba(0, 0, 0, 0.1);
}

/* Dark Mode Colors */
[data-theme="dark"] {
  --bg-primary: #111827;
  --bg-secondary: #1F2937;
  --bg-tertiary: #374151;
  --text-primary: #F9FAFB;
  --text-secondary: #E5E7EB;
  --text-tertiary: #D1D5DB;
  --border-color: #374151;
  --card-bg: #1F2937;
  --nav-bg: rgba(31, 41, 55, 0.95);
  --shadow-color: rgba(0, 0, 0, 0.3);

  /* Adjust gradients for dark mode */
  --gradient-primary: linear-gradient(135deg, #7c3aed 0%, #a855f7 100%);
  --gradient-secondary: linear-gradient(135deg, #ec4899 0%, #f43f5e 100%);
}

/* ==========================================================================
   Typography
   ========================================================================== */

body {
  font-family: var(--font-primary);
  font-size: 18px;
  line-height: 1.6;
  color: var(--text-primary);
  background-color: var(--bg-primary);
  transition: background-color 0.3s ease, color 0.3s ease;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-primary);
  font-weight: 700;
  line-height: 1.2;
}

h1 {
  font-size: 3.5rem; /* 64px */
}

h2 {
  font-size: 2.5rem; /* 40px */
}

h3 {
  font-size: 1.75rem; /* 28px */
}

/* Mobile Typography */
@media (max-width: 768px) {
  h1 {
    font-size: 2.5rem; /* 40px */
  }

  h2 {
    font-size: 2rem; /* 32px */
  }

  h3 {
    font-size: 1.5rem; /* 24px */
  }

  body {
    font-size: 16px;
  }
}

/* ==========================================================================
   Gradient Backgrounds
   ========================================================================== */

.hero-gradient {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  position: relative;
}

.cta-gradient {
  background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
  position: relative;
}

/* Optional: Animated gradient background */
.hero-gradient::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(45deg, rgba(255,255,255,0.1) 0%, transparent 100%);
  pointer-events: none;
}

/* ==========================================================================
   Buttons
   ========================================================================== */

/* Button Neon (Primary CTA) */
.button-neon {
  background-color: var(--neon-green);
  color: #000000;
  padding: 18px 40px;
  border-radius: 50px;
  font-size: 18px;
  font-weight: 700;
  text-decoration: none;
  display: inline-block;
  box-shadow: 0 8px 24px rgba(0, 255, 136, 0.4);
  transition: all 0.3s ease;
  border: none;
  cursor: pointer;
  text-align: center;
}

.button-neon:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 32px rgba(0, 255, 136, 0.6);
  color: #000000;
}

.button-neon:active {
  transform: translateY(0);
}

/* Button Glass (Secondary) */
.button-glass {
  background-color: rgba(255, 255, 255, 0.15);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  color: #FFFFFF;
  border: 2px solid rgba(255, 255, 255, 0.3);
  padding: 16px 38px;
  border-radius: 50px;
  font-size: 18px;
  font-weight: 700;
  text-decoration: none;
  display: inline-block;
  transition: all 0.3s ease;
  cursor: pointer;
  text-align: center;
}

.button-glass:hover {
  background-color: rgba(255, 255, 255, 0.25);
  border-color: rgba(255, 255, 255, 0.5);
  color: #FFFFFF;
}

/* Mobile Button Sizes */
@media (max-width: 768px) {
  .button-neon,
  .button-glass {
    padding: 14px 28px;
    font-size: 16px;
    width: 100%;
    max-width: 300px;
  }
}

/* ==========================================================================
   Cards & Glassmorphism
   ========================================================================== */

.glass-card {
  background: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-radius: 20px;
  border: 1px solid rgba(255, 255, 255, 0.2);
  padding: 30px;
  transition: all 0.3s ease;
}

.glass-card:hover {
  background: rgba(255, 255, 255, 0.15);
  transform: translateY(-5px);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

/* ==========================================================================
   Navigation
   ========================================================================== */

nav a {
  transition: color 0.3s ease;
}

nav a:hover {
  color: var(--neon-purple);
}

/* Responsive Navigation - Tablet Optimization */
@media (min-width: 768px) and (max-width: 1023px) {
  nav .container {
    padding-left: 1rem;
    padding-right: 1rem;
  }

  /* Ensure mobile menu is shown on tablets */
  #mobile-menu-button {
    display: block !important;
  }
}

/* Mobile Menu */
#mobile-menu {
  transition: all 0.3s ease;
}

/* Compact CTA button on smaller large screens */
@media (min-width: 1024px) and (max-width: 1280px) {
  .button-neon {
    padding: 10px 16px;
    font-size: 14px;
  }

  nav .container {
    padding-left: 1.5rem;
    padding-right: 1.5rem;
  }
}

/* ==========================================================================
   Animations
   ========================================================================== */

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

.fade-in-up {
  animation: fadeInUp 0.6s ease-out;
}

/* Smooth Scroll */
html {
  scroll-behavior: smooth;
}

/* ==========================================================================
   Utility Classes
   ========================================================================== */

.drop-shadow-glow {
  filter: drop-shadow(0 0 20px rgba(0, 255, 136, 0.5));
}

.text-gradient {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ==========================================================================
   Blog Post Styles
   ========================================================================== */

.blog-content {
  max-width: 800px;
  margin: 0 auto;
  line-height: 1.8;
}

.blog-content h2 {
  margin-top: 2rem;
  margin-bottom: 1rem;
  color: var(--dark);
}

.blog-content h3 {
  margin-top: 1.5rem;
  margin-bottom: 0.75rem;
  color: var(--dark);
}

.blog-content p {
  margin-bottom: 1.25rem;
}

.blog-content ul,
.blog-content ol {
  margin-bottom: 1.25rem;
  padding-left: 2rem;
}

.blog-content li {
  margin-bottom: 0.5rem;
}

.blog-content code {
  background: var(--light-gray);
  padding: 2px 6px;
  border-radius: 4px;
  font-family: 'Courier New', monospace;
  font-size: 0.9em;
}

.blog-content blockquote {
  border-left: 4px solid var(--neon-green);
  padding-left: 1.5rem;
  margin: 1.5rem 0;
  font-style: italic;
  color: var(--gray);
}

/* ==========================================================================
   Footer
   ========================================================================== */

footer a {
  transition: color 0.3s ease;
}

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

/* ==========================================================================
   Language Switcher (Simplified - Best UX for 2 languages)
   ========================================================================== */

.language-switcher {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  font-weight: 500;
}

.language-switcher a {
  color: var(--text-secondary);
  text-decoration: none;
  transition: color 0.2s ease;
  padding: 4px 8px;
  border-radius: 4px;
}

.language-switcher a:hover {
  color: var(--neon-purple);
  background: var(--bg-tertiary);
}

.language-switcher a.active {
  color: var(--neon-purple);
  font-weight: 700;
}

.language-switcher .separator {
  color: var(--border-color);
  user-select: none;
}

/* Legacy dropdown styles (kept for compatibility, hidden by default) */
.language-button {
  display: none;
}

.language-dropdown {
  display: none;
}

.language-option {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 16px;
  color: var(--text-primary);
  text-decoration: none;
  transition: background 0.2s ease;
  font-size: 14px;
}

.language-option:hover {
  background: var(--bg-tertiary);
}

.language-option.active {
  background: var(--bg-tertiary);
  font-weight: 600;
}

.language-option .flag {
  font-size: 20px;
  line-height: 1;
}

[data-theme="dark"] .language-dropdown {
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.4),
              0 0 0 1px rgba(139, 92, 246, 0.2);
}

/* ==========================================================================
   Dark Mode Toggle
   ========================================================================== */

.theme-toggle {
  position: relative;
  width: 60px;
  height: 30px;
  background-color: var(--border-color);
  border-radius: 30px;
  cursor: pointer;
  transition: background-color 0.3s ease;
  border: 2px solid var(--border-color);
}

.theme-toggle:hover {
  background-color: var(--bg-tertiary);
}

.theme-toggle-slider {
  position: absolute;
  top: 2px;
  left: 2px;
  width: 22px;
  height: 22px;
  background-color: var(--bg-primary);
  border-radius: 50%;
  transition: transform 0.3s ease;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
}

[data-theme="dark"] .theme-toggle-slider {
  transform: translateX(30px);
}

.theme-toggle:focus {
  outline: 2px solid var(--neon-purple);
  outline-offset: 2px;
}

/* Dark mode specific adjustments */

/* Background colors */
[data-theme="dark"] .bg-white {
  background-color: var(--card-bg) !important;
}

[data-theme="dark"] .bg-gray-50 {
  background-color: var(--bg-secondary) !important;
}

[data-theme="dark"] .bg-gray-100 {
  background-color: var(--bg-tertiary) !important;
}

[data-theme="dark"] .bg-gray-900 {
  background-color: var(--bg-secondary) !important;
}

/* Text colors - ensure readability */
[data-theme="dark"] .text-gray-600 {
  color: var(--text-secondary) !important;
}

[data-theme="dark"] .text-gray-700 {
  color: var(--text-secondary) !important;
}

[data-theme="dark"] .text-gray-800 {
  color: var(--text-primary) !important;
}

[data-theme="dark"] .text-gray-900 {
  color: var(--text-primary) !important;
}

[data-theme="dark"] .text-gray-400 {
  color: var(--text-tertiary) !important;
}

/* Border colors */
[data-theme="dark"] .border-gray-100 {
  border-color: var(--border-color) !important;
}

[data-theme="dark"] .border-gray-200 {
  border-color: var(--border-color) !important;
}

[data-theme="dark"] .border-gray-800 {
  border-color: #4B5563 !important;
}

/* Shadows with subtle glow for dark cards */
[data-theme="dark"] .shadow-md {
  box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.4),
              0 2px 4px -1px rgba(0, 0, 0, 0.3),
              0 0 0 1px rgba(139, 92, 246, 0.1);
}

[data-theme="dark"] .shadow-xl {
  box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.4),
              0 10px 10px -5px rgba(0, 0, 0, 0.3),
              0 0 0 1px rgba(139, 92, 246, 0.15);
}

[data-theme="dark"] .shadow-2xl {
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5),
              0 0 0 1px rgba(139, 92, 246, 0.2);
}

/* Cards - add subtle border glow */
[data-theme="dark"] article,
[data-theme="dark"] .rounded-2xl,
[data-theme="dark"] .rounded-xl {
  border: 1px solid rgba(139, 92, 246, 0.15);
}

/* Light gradient cards AND solid light backgrounds need dark background and light text */
[data-theme="dark"] .bg-gradient-to-br.from-purple-50,
[data-theme="dark"] .bg-gradient-to-br.from-blue-50,
[data-theme="dark"] .bg-gradient-to-br.from-green-50,
[data-theme="dark"] .bg-gradient-to-br.from-red-50,
[data-theme="dark"] .bg-gradient-to-br.from-pink-50,
[data-theme="dark"] .bg-gradient-to-r.from-purple-100,
[data-theme="dark"] .bg-gradient-to-r.from-blue-100,
[data-theme="dark"] .bg-gradient-to-r.from-green-100,
[data-theme="dark"] .bg-purple-50,
[data-theme="dark"] .bg-blue-50,
[data-theme="dark"] .bg-green-50,
[data-theme="dark"] .bg-red-50,
[data-theme="dark"] .bg-pink-50,
[data-theme="dark"] .bg-purple-100,
[data-theme="dark"] .bg-blue-100,
[data-theme="dark"] .bg-green-100,
[data-theme="dark"] .bg-red-100,
[data-theme="dark"] .bg-pink-100 {
  background: var(--card-bg) !important;
  border: 1px solid rgba(139, 92, 246, 0.2);
  box-shadow: 0 0 20px rgba(139, 92, 246, 0.1);
}

/* Ensure ALL text in light cards is readable */
[data-theme="dark"] .bg-gradient-to-br.from-purple-50 *,
[data-theme="dark"] .bg-gradient-to-br.from-blue-50 *,
[data-theme="dark"] .bg-gradient-to-br.from-green-50 *,
[data-theme="dark"] .bg-gradient-to-br.from-red-50 *,
[data-theme="dark"] .bg-gradient-to-br.from-pink-50 *,
[data-theme="dark"] .bg-gradient-to-r.from-purple-100 *,
[data-theme="dark"] .bg-gradient-to-r.from-blue-100 *,
[data-theme="dark"] .bg-gradient-to-r.from-green-100 *,
[data-theme="dark"] .bg-purple-50 *,
[data-theme="dark"] .bg-blue-50 *,
[data-theme="dark"] .bg-green-50 *,
[data-theme="dark"] .bg-red-50 *,
[data-theme="dark"] .bg-pink-50 *,
[data-theme="dark"] .bg-purple-100 *,
[data-theme="dark"] .bg-blue-100 *,
[data-theme="dark"] .bg-green-100 *,
[data-theme="dark"] .bg-red-100 *,
[data-theme="dark"] .bg-pink-100 * {
  color: var(--text-primary) !important;
}

/* White bordered cards */
[data-theme="dark"] .bg-white.border-2,
[data-theme="dark"] .bg-white.border {
  background-color: var(--card-bg) !important;
  border-color: rgba(139, 92, 246, 0.3) !important;
  box-shadow: 0 0 20px rgba(139, 92, 246, 0.1);
}

[data-theme="dark"] .bg-white.border-2 *,
[data-theme="dark"] .bg-white.border * {
  color: var(--text-primary) !important;
}

/* Specific border colors in dark mode */
[data-theme="dark"] .border-purple-200 {
  border-color: rgba(139, 92, 246, 0.3) !important;
}

[data-theme="dark"] .border-blue-200 {
  border-color: rgba(96, 165, 250, 0.3) !important;
}

[data-theme="dark"] .border-green-200 {
  border-color: rgba(52, 211, 153, 0.3) !important;
}

[data-theme="dark"] .border-red-200 {
  border-color: rgba(248, 113, 113, 0.3) !important;
}

/* Specific color preservation for gradients that should stay */
[data-theme="dark"] .text-purple-600,
[data-theme="dark"] .text-purple-900 {
  color: #a78bfa !important;
}

[data-theme="dark"] .text-blue-600,
[data-theme="dark"] .text-blue-900 {
  color: #60a5fa !important;
}

[data-theme="dark"] .text-green-600 {
  color: #34d399 !important;
}

[data-theme="dark"] .text-red-600 {
  color: #f87171 !important;
}

/* Ensure gradients remain visible in dark mode */
[data-theme="dark"] .hero-gradient {
  background: var(--gradient-primary);
}

[data-theme="dark"] .cta-gradient {
  background: var(--gradient-secondary);
}

/* Dark mode navigation */
[data-theme="dark"] nav {
  background-color: var(--nav-bg) !important;
  border-bottom: 1px solid rgba(139, 92, 246, 0.1);
}

/* Glass cards in dark mode */
[data-theme="dark"] .glass-card {
  background: rgba(31, 41, 55, 0.5);
  border: 1px solid rgba(139, 92, 246, 0.2);
  box-shadow: 0 0 30px rgba(139, 92, 246, 0.1);
}

[data-theme="dark"] .glass-card:hover {
  background: rgba(31, 41, 55, 0.7);
  box-shadow: 0 0 40px rgba(139, 92, 246, 0.15);
}

/* Button glass in dark mode */
[data-theme="dark"] .button-glass {
  background-color: rgba(31, 41, 55, 0.5);
  border-color: rgba(139, 92, 246, 0.3);
  box-shadow: 0 0 20px rgba(139, 92, 246, 0.1);
}

[data-theme="dark"] .button-glass:hover {
  background-color: rgba(31, 41, 55, 0.7);
  border-color: rgba(139, 92, 246, 0.5);
  box-shadow: 0 0 30px rgba(139, 92, 246, 0.15);
}

/* Gradient backgrounds that should be darker */
[data-theme="dark"] .from-purple-50.to-pink-50 {
  background: linear-gradient(to bottom right, var(--bg-secondary), var(--bg-tertiary)) !important;
}

[data-theme="dark"] .from-gray-50.to-gray-100 {
  background: linear-gradient(to bottom right, var(--bg-secondary), var(--bg-tertiary)) !important;
}

/* Featured post card */
[data-theme="dark"] .bg-gradient-to-br {
  box-shadow: 0 0 30px rgba(139, 92, 246, 0.15);
}

/* Hover effects for cards */
[data-theme="dark"] .hover\:shadow-xl:hover {
  box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.5),
              0 10px 10px -5px rgba(0, 0, 0, 0.4),
              0 0 0 2px rgba(139, 92, 246, 0.2) !important;
}

/* Credential cards and badges */
[data-theme="dark"] .bg-gradient-to-r.from-purple-50 {
  background: linear-gradient(to right, rgba(139, 92, 246, 0.15), transparent) !important;
}

/* Table styling in dark mode */
[data-theme="dark"] table {
  border-color: var(--border-color);
}

[data-theme="dark"] thead {
  background-color: var(--bg-tertiary);
}

[data-theme="dark"] tbody tr {
  border-color: var(--border-color);
}

[data-theme="dark"] td,
[data-theme="dark"] th {
  border-color: var(--border-color);
}

/* Code blocks */
[data-theme="dark"] code {
  background-color: var(--bg-tertiary);
  color: var(--text-primary);
}

[data-theme="dark"] pre {
  background-color: var(--bg-tertiary);
  border: 1px solid rgba(139, 92, 246, 0.2);
}

/* Blockquotes */
[data-theme="dark"] blockquote {
  border-left-color: rgba(139, 92, 246, 0.5);
  color: var(--text-secondary);
}

/* Input fields */
[data-theme="dark"] input,
[data-theme="dark"] textarea,
[data-theme="dark"] select {
  background-color: var(--bg-tertiary);
  border-color: rgba(139, 92, 246, 0.2);
  color: var(--text-primary);
}

[data-theme="dark"] input:focus,
[data-theme="dark"] textarea:focus,
[data-theme="dark"] select:focus {
  border-color: rgba(139, 92, 246, 0.5);
  box-shadow: 0 0 0 3px rgba(139, 92, 246, 0.1);
}

[data-theme="dark"] input::placeholder,
[data-theme="dark"] textarea::placeholder {
  color: var(--text-tertiary);
}

/* Footer adjustments */
[data-theme="dark"] footer {
  background-color: #0f172a !important;
  border-top: 1px solid rgba(139, 92, 246, 0.1);
}

/* ==========================================================================
   Responsive Helpers
   ========================================================================== */

@media (max-width: 768px) {
  .container {
    padding-left: 1.5rem;
    padding-right: 1.5rem;
  }
}