/* ==========================================
   N8N Tech Static HTML - Premium Main CSS
   ========================================== */

/* Google Fonts Import */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&family=Outfit:wght@400;500;600;700;800&display=swap');

/* CSS Reset and Base Styles */
*,
*::before,
*::after {
  box-sizing: border-box;
}

* {
  margin: 0;
  padding: 0;
}

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

body {
  font-family: var(--font-inter, 'Inter', system-ui, sans-serif);
  line-height: 1.6;
  color: var(--text-primary);
  background-color: var(--bg-primary);
  transition: background-color 0.3s ease, color 0.3s ease;
  overflow-x: hidden;
}

/* ==========================================
   Premium CSS Custom Properties (Variables)
   ========================================== */
:root {
  /* Premium Color System */
  --electric-purple: #a855f7;
  --electric-purple-light: #c084fc;
  --electric-purple-dark: #9333ea;
  --electric-purple-glow: rgba(168, 85, 247, 0.5);

  --neon-cyan: #22d3ee;
  --neon-cyan-light: #67e8f9;
  --neon-cyan-dark: #06b6d4;
  --neon-cyan-glow: rgba(34, 211, 238, 0.5);

  --neon-pink: #f472b6;
  --neon-pink-glow: rgba(244, 114, 182, 0.5);

  /* Background Gradients */
  --bg-gradient-dark: linear-gradient(135deg, #0a0a0f 0%, #0f0f1a 50%, #0a0a0f 100%);
  --bg-gradient-accent: radial-gradient(ellipse at 80% 20%, rgba(168, 85, 247, 0.15) 0%, transparent 50%),
    radial-gradient(ellipse at 20% 80%, rgba(34, 211, 238, 0.1) 0%, transparent 50%);

  /* Slate Colors - Enhanced */
  --slate-950: #020617;
  --slate-900: #0f172a;
  --slate-800: #1e293b;
  --slate-700: #334155;
  --slate-600: #475569;
  --slate-500: #64748b;
  --slate-400: #94a3b8;
  --slate-300: #cbd5e1;
  --slate-200: #e2e8f0;
  --slate-100: #f1f5f9;
  --slate-50: #f8fafc;
  --white: #ffffff;
  --black: #000000;

  /* Premium Glassmorphism */
  --glass-bg: rgba(255, 255, 255, 0.03);
  --glass-bg-hover: rgba(255, 255, 255, 0.06);
  --glass-border: rgba(255, 255, 255, 0.08);
  --glass-border-hover: rgba(168, 85, 247, 0.3);
  --glass-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
  --glass-shadow-hover: 0 20px 60px rgba(168, 85, 247, 0.2);
  --glass-backdrop: blur(20px);

  /* Glow Effects */
  --glow-purple: 0 0 30px rgba(168, 85, 247, 0.4);
  --glow-cyan: 0 0 30px rgba(34, 211, 238, 0.4);
  --glow-text: 0 0 40px rgba(168, 85, 247, 0.3);

  /* Typography */
  --font-inter: 'Inter', system-ui, sans-serif;
  --font-outfit: 'Outfit', system-ui, sans-serif;
  --text-xs: 0.75rem;
  --text-sm: 0.875rem;
  --text-base: 1rem;
  --text-lg: 1.125rem;
  --text-xl: 1.25rem;
  --text-2xl: 1.5rem;
  --text-3xl: 1.875rem;
  --text-4xl: 2.25rem;
  --text-5xl: 3rem;
  --text-6xl: 3.75rem;
  --text-7xl: 4.5rem;

  /* Enhanced Spacing */
  --space-unit: 1rem;
  --space-xs: calc(var(--space-unit) * 0.5);
  --space-sm: calc(var(--space-unit) * 0.75);
  --space-md: var(--space-unit);
  --space-lg: calc(var(--space-unit) * 1.5);
  --space-xl: calc(var(--space-unit) * 2);
  --space-2xl: calc(var(--space-unit) * 3);
  --space-3xl: calc(var(--space-unit) * 4);
  --space-4xl: calc(var(--space-unit) * 6);

  /* Breakpoints */
  --bp-sm: 640px;
  --bp-md: 768px;
  --bp-lg: 1024px;
  --bp-xl: 1280px;
  --bp-2xl: 1536px;

  /* Border Radius */
  --radius-sm: 0.5rem;
  --radius-md: 0.75rem;
  --radius-lg: 1rem;
  --radius-xl: 1.25rem;
  --radius-2xl: 1.5rem;
  --radius-3xl: 2rem;
  --radius-full: 9999px;

  /* Smooth Transitions */
  --transition-fast: 0.15s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-bounce: 0.5s cubic-bezier(0.68, -0.55, 0.265, 1.55);

  /* Z-index Scale */
  --z-dropdown: 1000;
  --z-sticky: 1020;
  --z-fixed: 1030;
  --z-modal: 1040;
  --z-popover: 1050;
  --z-tooltip: 1060;

  /* Default Theme Colors (Dark Theme as default) */
  --bg-primary: #050508;
  --bg-secondary: #0a0a0f;
  --bg-tertiary: #111118;
  --bg-card: rgba(15, 15, 25, 0.8);
  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --border-primary: rgba(148, 163, 184, 0.1);
  --border-secondary: rgba(148, 163, 184, 0.05);
  --accent-primary: var(--electric-purple);
  --accent-secondary: var(--neon-cyan);
}

/* Dark Theme (Default) */
[data-theme="dark"] {
  --bg-primary: #050508;
  --bg-secondary: #0a0a0f;
  --bg-tertiary: #111118;
  --bg-card: rgba(15, 15, 25, 0.8);
  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --border-primary: rgba(148, 163, 184, 0.1);
  --border-secondary: rgba(148, 163, 184, 0.05);
  --accent-primary: var(--electric-purple);
  --accent-secondary: var(--neon-cyan);

  --glass-bg: rgba(255, 255, 255, 0.03);
  --glass-border: rgba(255, 255, 255, 0.08);
}

/* Light Theme */
/* Light Theme */
[data-theme="light"] {
  --bg-primary: var(--slate-50);
  --bg-secondary: var(--white);
  --bg-tertiary: var(--slate-100);
  --bg-card: var(--white);
  --text-primary: var(--slate-900);
  --text-secondary: var(--slate-600);
  --text-muted: var(--slate-500);
  --border-primary: var(--slate-200);
  --border-secondary: var(--slate-100);
  --accent-primary: var(--electric-purple-dark);
  --accent-secondary: var(--neon-cyan-dark);

  --glass-bg: rgba(255, 255, 255, 0.9);
  --glass-border: var(--slate-200);
  --glass-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
}

/* Ultra-Premium Light Mode - Dot Pattern Texture */
html.light body,
[data-theme="light"] body {
  background-image: radial-gradient(#cbd5e1 1px, transparent 1px);
  background-size: 24px 24px;
  background-attachment: fixed;
}

/* ==========================================
   Utility Classes
   ========================================== */
.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 var(--space-lg);
}

/* Premium Glass Effect */
.glass {
  background: var(--glass-bg);
  backdrop-filter: var(--glass-backdrop);
  -webkit-backdrop-filter: var(--glass-backdrop);
  border: 1px solid var(--glass-border);
  box-shadow: var(--glass-shadow);
  border-radius: var(--radius-xl);
  transition: all var(--transition-normal);
}

.glass:hover {
  background: var(--glass-bg-hover);
  border-color: var(--glass-border-hover);
  box-shadow: var(--glass-shadow-hover);
}

/* Gradient Text */
.gradient-text {
  background: linear-gradient(135deg, var(--electric-purple) 0%, var(--neon-cyan) 50%, var(--electric-purple-light) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  background-size: 200% 200%;
  animation: gradientShift 5s ease infinite;
}

@keyframes gradientShift {

  0%,
  100% {
    background-position: 0% 50%;
  }

  50% {
    background-position: 100% 50%;
  }
}

/* Glow Effect */
.glow {
  box-shadow: var(--glow-purple);
}

.glow-text {
  text-shadow: var(--glow-text);
}

/* Grid System */
.grid-responsive {
  display: grid;
  gap: var(--space-lg);
  grid-template-columns: 1fr;
}

@media (min-width: 640px) {
  .grid-responsive {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .grid-responsive {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* ==========================================
   Premium Button System
   ========================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: var(--space-md) var(--space-xl);
  font-family: var(--font-outfit);
  font-size: var(--text-sm);
  font-weight: 600;
  text-decoration: none;
  border: none;
  border-radius: var(--radius-xl);
  cursor: pointer;
  transition: all var(--transition-normal);
  position: relative;
  overflow: hidden;
  white-space: nowrap;
  letter-spacing: 0.02em;
}

.btn::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
  transition: left 0.5s ease;
}

.btn:hover::before {
  left: 100%;
}

.btn-primary {
  background: linear-gradient(135deg, var(--electric-purple) 0%, var(--electric-purple-light) 50%, var(--neon-cyan) 100%);
  background-size: 200% 200%;
  color: var(--white);
  box-shadow: 0 4px 20px rgba(168, 85, 247, 0.4),
    inset 0 1px 0 rgba(255, 255, 255, 0.2);
}

.btn-primary:hover {
  background-position: 100% 0;
  transform: translateY(-3px);
  box-shadow: 0 8px 30px rgba(168, 85, 247, 0.5),
    inset 0 1px 0 rgba(255, 255, 255, 0.2);
}

.btn-secondary {
  background: var(--glass-bg);
  color: var(--text-primary);
  border: 1px solid var(--glass-border);
  backdrop-filter: var(--glass-backdrop);
}

.btn-secondary:hover {
  background: var(--glass-bg-hover);
  border-color: var(--electric-purple);
  transform: translateY(-3px);
  box-shadow: var(--glow-purple);
}

.btn-outline {
  background: transparent;
  color: var(--electric-purple);
  border: 2px solid var(--electric-purple);
  position: relative;
}

.btn-outline::after {
  content: '';
  position: absolute;
  inset: -2px;
  border-radius: inherit;
  background: linear-gradient(135deg, var(--electric-purple), var(--neon-cyan));
  opacity: 0;
  z-index: -1;
  transition: opacity var(--transition-normal);
}

.btn-outline:hover {
  color: var(--white);
  border-color: transparent;
  transform: translateY(-3px);
}

.btn-outline:hover::after {
  opacity: 1;
}

.btn-large {
  padding: var(--space-lg) var(--space-2xl);
  font-size: var(--text-base);
  border-radius: var(--radius-2xl);
}

.btn-small {
  padding: var(--space-xs) var(--space-md);
  font-size: var(--text-xs);
}

.btn-icon {
  font-size: 1.2em;
}

/* ==========================================
   Section Styles
   ========================================== */
section {
  padding: var(--space-4xl) 0;
  position: relative;
}

.section-header {
  text-align: center;
  margin-bottom: var(--space-4xl);
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
}

.section-title {
  font-family: var(--font-outfit);
  font-size: var(--text-4xl);
  font-weight: 800;
  color: var(--text-primary);
  margin-bottom: var(--space-lg);
  line-height: 1.1;
  letter-spacing: -0.02em;
}

.section-description {
  font-size: var(--text-lg);
  color: var(--text-secondary);
  line-height: 1.7;
}

/* Section CTA */
.section-cta {
  text-align: center;
  margin-top: var(--space-3xl);
}

/* ==========================================
   Loading Screen
   ========================================== */
.loading-screen {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: var(--bg-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: var(--z-modal);
  transition: opacity 0.5s ease, visibility 0.5s ease;
}

.loading-screen.hidden {
  opacity: 0;
  visibility: hidden;
}

.loading-spinner {
  width: 50px;
  height: 50px;
  border: 3px solid var(--glass-border);
  border-top: 3px solid var(--electric-purple);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

@keyframes spin {
  0% {
    transform: rotate(0deg);
  }

  100% {
    transform: rotate(360deg);
  }
}

/* Skip Link for Accessibility */
.skip-link {
  position: absolute;
  top: -40px;
  left: 6px;
  background: var(--electric-purple);
  color: var(--white);
  padding: 8px 16px;
  text-decoration: none;
  border-radius: var(--radius-md);
  z-index: var(--z-tooltip);
  transition: top var(--transition-normal);
}

.skip-link:focus {
  top: 6px;
}

/* ==========================================
   Custom Scrollbar
   ========================================== */
::-webkit-scrollbar {
  width: 10px;
}

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

::-webkit-scrollbar-thumb {
  background: linear-gradient(180deg, var(--electric-purple), var(--neon-cyan));
  border-radius: var(--radius-full);
  border: 2px solid var(--bg-secondary);
}

::-webkit-scrollbar-thumb:hover {
  background: linear-gradient(180deg, var(--electric-purple-light), var(--neon-cyan-light));
}

/* Selection Styling */
::selection {
  background: var(--electric-purple);
  color: var(--white);
}

/* Focus Styles */
:focus-visible {
  outline: 2px solid var(--electric-purple);
  outline-offset: 3px;
}

/* ==========================================
   Print Styles
   ========================================== */
@media print {

  .nav,
  .footer,
  .back-to-top,
  .theme-toggle {
    display: none !important;
  }

  body {
    background: white !important;
    color: black !important;
  }

  .glass {
    background: white !important;
    border: 1px solid #ccc !important;
    box-shadow: none !important;
  }
}

/* ==========================================
   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;
  }
}