/* ==========================================================================
   ToolIxa Design System — Main & Theme Variables
   Brand: ToolIxa | Tagline: Smart Tools. Simple Solutions.
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&family=Plus+Jakarta+Sans:wght@500;600;700;800&family=JetBrains+Mono:wght@400;500&display=swap');

:root {
  /* Font Families */
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-heading: 'Plus Jakarta Sans', 'Inter', sans-serif;
  --font-mono: 'JetBrains Mono', monospace;

  /* Brand Accents & Gradients */
  --primary-50: #EEF2FF;
  --primary-100: #E0E7FF;
  --primary-500: #6366F1;
  --primary-600: #4F46E5;
  --primary-700: #4338CA;
  
  --accent-cyan: #06B6D4;
  --accent-violet: #8B5CF6;
  --accent-emerald: #10B981;
  --accent-amber: #F59E0B;
  --accent-rose: #F43F5E;

  --gradient-brand: linear-gradient(135deg, #6366F1 0%, #8B5CF6 50%, #06B6D4 100%);
  --gradient-brand-hover: linear-gradient(135deg, #4F46E5 0%, #7C3AED 50%, #0891B2 100%);
  --gradient-hero-badge: linear-gradient(90deg, rgba(99, 102, 241, 0.15) 0%, rgba(6, 182, 212, 0.15) 100%);
  --gradient-glow: radial-gradient(circle at 50% 0%, rgba(99, 102, 241, 0.18) 0%, rgba(6, 182, 212, 0) 70%);

  /* Border Radius */
  --radius-xs: 4px;
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 9999px;

  /* Transitions */
  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: 250ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-smooth: 350ms cubic-bezier(0.16, 1, 0.3, 1);
}

/* Light Theme Variables (Default) */
[data-theme="light"] {
  --bg-body: #F8FAFC;
  --bg-surface: #FFFFFF;
  --bg-surface-elevated: #F1F5F9;
  --bg-surface-glass: rgba(255, 255, 255, 0.85);
  --bg-muted: #E2E8F0;
  
  --text-main: #0F172A;
  --text-secondary: #475569;
  --text-muted: #64748B;
  --text-inverse: #FFFFFF;

  --border-subtle: #E2E8F0;
  --border-strong: #CBD5E1;
  --border-brand: rgba(99, 102, 241, 0.3);

  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.07), 0 2px 4px -2px rgba(0, 0, 0, 0.05);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -4px rgba(0, 0, 0, 0.04);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.04);
  --shadow-glow: 0 0 25px rgba(99, 102, 241, 0.2);

  --code-bg: #1E293B;
  --code-text: #F8FAFC;
}

/* Dark Theme Variables */
[data-theme="dark"] {
  --bg-body: #0B0F17;
  --bg-surface: #111827;
  --bg-surface-elevated: #1F2937;
  --bg-surface-glass: rgba(17, 24, 39, 0.85);
  --bg-muted: #374151;
  
  --text-main: #F9FAFB;
  --text-secondary: #9CA3AF;
  --text-muted: #6B7280;
  --text-inverse: #0F172A;

  --border-subtle: #1F2937;
  --border-strong: #374151;
  --border-brand: rgba(99, 102, 241, 0.4);

  --shadow-sm: 0 1px 3px 0 rgba(0, 0, 0, 0.4);
  --shadow-md: 0 4px 12px 0 rgba(0, 0, 0, 0.45);
  --shadow-lg: 0 12px 24px -4px rgba(0, 0, 0, 0.5);
  --shadow-xl: 0 24px 48px -12px rgba(0, 0, 0, 0.6);
  --shadow-glow: 0 0 35px rgba(99, 102, 241, 0.35);

  --code-bg: #030712;
  --code-text: #E5E7EB;
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-sans);
  background-color: var(--bg-body);
  color: var(--text-main);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
  transition: background-color var(--transition-normal), color var(--transition-normal);
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  color: var(--text-main);
  line-height: 1.25;
  letter-spacing: -0.02em;
}

a {
  color: inherit;
  text-decoration: none;
  transition: color var(--transition-fast);
}

button, input, select, textarea {
  font-family: inherit;
  font-size: inherit;
  color: inherit;
  border: none;
  outline: none;
  background: none;
}

button {
  cursor: pointer;
  touch-action: manipulation;
}

ul, ol {
  list-style: none;
}

img, svg {
  display: block;
  max-width: 100%;
}

/* Main Container System */
.container {
  width: 100%;
  max-width: 1280px;
  margin-left: auto;
  margin-right: auto;
  padding-left: 1.5rem;
  padding-right: 1.5rem;
}

.container-narrow {
  max-width: 960px;
}

.container-wide {
  max-width: 1440px;
}

/* Screen Reader Accessible Utility */
.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;
}

/* Gradient Text Effect */
.gradient-text {
  background: var(--gradient-brand);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}