/*!
 * tailwindcss-core - Tailwind v4 Package
 * Version: 0.9.0
 * 
 * For use with Tailwind CSS v4
 * Usage: @import "@casoon/tailwindcss-core/index.css";
 */

/* Note: @import "tailwindcss"; should be added by the consumer */

/*!
 * Casoon Core - Tailwind v4 Complete Foundation Package
 * Version: 0.9.0 — Modular Architecture
 * 
 * Ultra-complete foundation with 7 integrated systems:
 * - Core Utilities, Forms, Cards & Components
 * - Navigation System (navbar, tabs, breadcrumbs, drawer)
 * - Scroll System (custom scrollbars, snap, reveal animations)
 * - Gradients System (dynamic backgrounds & effects)
 * - Loading System (spinners, skeleton, progress indicators)
 * - Micro Interactions (hover effects, animations)
 * - Typography System (prose, blog, marketing, docs styles)
 * 
 * Total: 145+ classes, optimized for production
 * 
 * Usage: @import "@casoon/tailwindcss-core/index.css";
 */

/* Note: @import "tailwindcss"; should be added by the consumer */

/* =========================================================
   DESIGN SYSTEM FOUNDATION
   ========================================================= */

/* Design Tokens - Complete token system for all components */
/*!
 * Design Tokens - Complete Design System Foundation
 * Core color, spacing, typography, and motion tokens
 */

@theme {
  /* Color tokens - Primary design system */
  --cs-bg: #0b0c0f;
  --cs-surface: #14161a;
  --cs-elev1: #1b1e24;
  --cs-elev2: #21252d;
  --cs-text: #eef1f6;
  --cs-text-muted: #b6bfcc;
  --cs-border: #2a2f39;
  --cs-brand: #4f7cff;
  --cs-brand-contrast: #0b0d12;

  /* State colors */
  --cs-success: #22c55e;
  --cs-warning: #f59e0b;
  --cs-danger: #ef4444;
  --cs-info: #06b6d4;

  /* Typography tokens */
  --cs-font-sans: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Inter, "Helvetica Neue", Arial, "Noto Sans", "Liberation Sans", sans-serif;
  --cs-font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
  --cs-font-size: 16px;
  --cs-line: 1.5;

  /* Spacing tokens with density support */
  --cs-density: 1;
  --cs-space-1: calc(4px * var(--cs-density));
  --cs-space-2: calc(8px * var(--cs-density));
  --cs-space-3: calc(12px * var(--cs-density));
  --cs-space-4: calc(16px * var(--cs-density));
  --cs-space-6: calc(24px * var(--cs-density));
  --cs-space-8: calc(32px * var(--cs-density));

  /* Border radius & shadow tokens */
  --cs-radius: 10px;
  --cs-shadow-1: 0 1px 2px rgba(0, 0, 0, 0.25), 0 1px 1px rgba(0, 0, 0, 0.1);
  --cs-shadow-2: 0 8px 24px rgba(0, 0, 0, 0.22), 0 2px 8px rgba(0, 0, 0, 0.18);

  /* Motion tokens */
  --cs-transition: 180ms cubic-bezier(0.2, 0.6, 0.2, 1);
  --cs-anim-duration-sm: 160ms;
  --cs-anim-duration-md: 280ms;
  --cs-anim-duration-lg: 420ms;
  --cs-anim-ease-out: cubic-bezier(0.16, 1, 0.3, 1);
  --cs-anim-ease-in: cubic-bezier(0.32, 0, 0.67, 0);
  --cs-anim-ease-in-out: cubic-bezier(0.65, 0, 0.35, 1);

  /* Z-index tokens - Extended scale */
  --cs-z-0: 0; --cs-z-1: 1; --cs-z-base: 1; --cs-z-10: 10; --cs-z-20: 20;
  --cs-z-30: 30; --cs-z-popover: 30; --cs-z-40: 40; --cs-z-tooltip: 40;
  --cs-z-50: 50; --cs-z-toast: 50; --cs-z-60: 60; --cs-z-modal: 60;
  --cs-z-70: 70; --cs-z-80: 80; --cs-z-90: 90; --cs-z-100: 100;
  --cs-z-200: 200; --cs-z-300: 300; --cs-z-400: 400; --cs-z-500: 500;
  --cs-z-600: 600; --cs-z-700: 700; --cs-z-800: 800; --cs-z-900: 900;
  --cs-z-999: 999; --cs-z-high: 9999; --cs-z-9999: 9999; --cs-z-max: 2147483647;
  /* Additional semantic z-index tokens from v0.8.x */
  --cs-z-drawer: 1000; --cs-z-dropdown: 1000; --cs-z-fixed: 1030;
  --cs-z-nav: 1020; --cs-z-nav-overlay: 1010; --cs-z-orb: 5;
  --cs-z-overlay: 1040; --cs-z-sticky: 1020;

  /* Layout tokens */
  --cs-page-max: 1200px;
  --cs-page-pad: var(--cs-space-4);

  /* Backdrop/blur tokens */
  --cs-acrylic-blur: 14px;
  --cs-acrylic-tint: rgba(20, 22, 26, 0.55);
  --cs-acrylic-border: rgba(255, 255, 255, 0.06);

  /* Progressive color tokens */
  --cs-brand-oklch: oklch(60% 0.15 255);
  --cs-brand-ink: var(--cs-brand-contrast);

  /* Fluid typography tokens */
  --cs-fs-xs: clamp(0.78rem, 0.75rem + 0.2cqi, 0.84rem);
  --cs-fs-sm: clamp(0.88rem, 0.82rem + 0.3cqi, 0.95rem);
  --cs-fs-md: clamp(1rem, 0.95rem + 0.4cqi, 1.125rem);
  --cs-fs-lg: clamp(1.25rem, 1.05rem + 0.8cqi, 1.5rem);
  --cs-fs-xl: clamp(1.5rem, 1.2rem + 1.2cqi, 1.875rem);
  --cs-fs-2xl: clamp(1.875rem, 1.4rem + 1.6cqi, 2.25rem);

  /* Form tokens */
  --cs-form-bg: var(--cs-surface);
  --cs-form-border: var(--cs-border);
  --cs-form-radius: var(--cs-radius);
  --cs-form-shadow: var(--cs-shadow-1);
  --cs-form-focus: var(--cs-brand);

  /* Typography component tokens */
  --cs-prose-headings: var(--cs-text);
  --cs-prose-body: var(--cs-text-muted);
  --cs-prose-links: var(--cs-brand);
  --cs-prose-bold: var(--cs-text);
  --cs-prose-quotes: var(--cs-text-muted);
  --cs-prose-captions: var(--cs-text-muted);

  /* Gradients system tokens */
  --cs-gradient-primary: linear-gradient(135deg, var(--cs-brand), color-mix(in srgb, var(--cs-brand) 80%, var(--cs-info)));
  --cs-gradient-success: linear-gradient(135deg, var(--cs-success), color-mix(in srgb, var(--cs-success) 70%, var(--cs-info)));
  --cs-gradient-warning: linear-gradient(135deg, var(--cs-warning), color-mix(in srgb, var(--cs-warning) 80%, var(--cs-danger)));
  --cs-gradient-sunset: linear-gradient(135deg, #ff9a9e, #fecfef, #fecfef);
  --cs-gradient-ocean: linear-gradient(135deg, #667eea, #764ba2);
  --cs-gradient-forest: linear-gradient(135deg, #11998e, #38ef7d);

  /* Extended gradient color stop tokens for comprehensive utilities */
  --cs-gradient-sunset-start: #ff6b6b;
  --cs-gradient-sunset-mid: #ffd93d;
  --cs-gradient-sunset-end: #6bcf7f;

  --cs-gradient-ocean-start: #667eea;
  --cs-gradient-ocean-end: #764ba2;

  --cs-gradient-fire-start: #f093fb;
  --cs-gradient-fire-end: #f5576c;

  --cs-gradient-mint-start: #4facfe;
  --cs-gradient-mint-end: #00f2fe;

  --cs-gradient-purple-start: #a8edea;
  --cs-gradient-purple-end: #fed6e3;

  --cs-gradient-orange-start: #ffeaa7;
  --cs-gradient-orange-end: #fab1a0;

  --cs-gradient-blue-start: #74b9ff;
  --cs-gradient-blue-end: #0984e3;

  --cs-gradient-pink-start: #fd79a8;
  --cs-gradient-pink-end: #fdcb6e;

  /* Custom gradient variables (user customizable) */
  --cs-gradient-custom-start: #667eea;
  --cs-gradient-custom-mid: ;
  --cs-gradient-custom-end: #764ba2;

  --cs-gradient-white: #ffffff;

  /* Shared stops list fallback (for radial/conic) */
  --cs-gradient-stops: var(--cs-gradient-ocean-start), var(--cs-gradient-ocean-end);

  /* Gradient fade color tokens */
  --cs-gradient-fade-color: rgba(79, 124, 255, 0.6);
  --cs-gradient-fade-mid: rgba(79, 124, 255, 0.3);

  /* Animation defaults for gradient animations */
  --cs-anim-gradient-duration: 4s;
  --cs-anim-gradient-ease: var(--cs-anim-ease-in-out);
  --cs-anim-gradient-iteration: infinite;

  /* Loading system tokens */
  --cs-loading-spinner-size: 40px;
  --cs-loading-spinner-border: 4px;
  --cs-loading-duration-fast: 0.8s;
  --cs-loading-duration-normal: 1.2s;
  --cs-loading-duration-slow: 2s;

  /* Micro interactions tokens */
  --cs-hover-lift: -2px;
  --cs-hover-scale: 1.02;
  --cs-hover-glow-spread: 8px;
  --cs-tap-scale: 0.98;

  /* Scrollbar design tokens */
  --cs-scroll-thumb-gray: #6b7280;
  --cs-scroll-thumb-blue: #3b82f6;
  --cs-scroll-thumb-primary: var(--cs-brand);
  --cs-scroll-track: rgba(0, 0, 0, 0.08);
  --cs-scroll-track-light: rgba(0, 0, 0, 0.04);
  --cs-scroll-thumb-radius: 8px;
  --cs-scrollbar-size: 10px;
  --cs-scrollbar-size-thin: 6px;
  
  /* Scroll shadow tokens */
  --cs-scroll-shadow-color: rgba(0, 0, 0, 0.08);
  --cs-scroll-shadow-size: 12px;
  
  /* Scroll animation tokens */
  --cs-scroll-reveal-distance: 16px;
  --cs-scroll-reveal-scale: 0.96;

  /* Navigation design tokens */
  --cs-nav-primary: var(--cs-brand);
  --cs-nav-text: var(--cs-text);
  --cs-nav-text-muted: var(--cs-text-muted);
  --cs-nav-text-secondary: color-mix(in srgb, var(--cs-text) 75%, transparent);
  --cs-nav-text-disabled: color-mix(in srgb, var(--cs-text) 40%, transparent);
  --cs-nav-border: var(--cs-border);
  --cs-nav-border-light: color-mix(in srgb, var(--cs-border) 60%, transparent);
  --cs-nav-bg: var(--cs-surface);
  --cs-nav-bg-hover: color-mix(in srgb, var(--cs-surface) 80%, var(--cs-text) 8%);
  --cs-nav-bg-secondary: color-mix(in srgb, var(--cs-surface) 60%, var(--cs-bg));
  --cs-nav-bg-disabled: color-mix(in srgb, var(--cs-surface) 50%, transparent);
  --cs-nav-height: 64px;
  --cs-nav-transition: var(--cs-transition);
  --cs-nav-transition-fast: calc(var(--cs-transition) * 0.75);
  --cs-nav-transition-base: var(--cs-transition);
  --cs-nav-backdrop-bg: rgba(0, 0, 0, 0.5);
  --cs-nav-backdrop-blur: var(--cs-acrylic-blur);

  /* Typography base tokens */
  --cs-prose-font-size: 1rem;
  --cs-prose-line-height: 1.75;
  --cs-prose-color: color-mix(in srgb, currentColor 85%, transparent);
  --cs-prose-headings-color: color-mix(in srgb, currentColor 95%, transparent);
  --cs-prose-links-color: #3b82f6;
  --cs-prose-links-hover: color-mix(in srgb, #3b82f6 80%, transparent);
  --cs-prose-spacing: 1.5rem;
  --cs-prose-max-width: 65ch;
  
  /* Typography scale tokens */
  --cs-prose-xs: 0.8125rem;
  --cs-prose-sm: 0.875rem;
  --cs-prose-base: 1rem;
  --cs-prose-lg: 1.125rem;
  --cs-prose-xl: 1.25rem;
  --cs-prose-2xl: 1.5rem;
  --cs-prose-3xl: 1.875rem;
  --cs-prose-4xl: 2.25rem;
  --cs-prose-5xl: 3rem;
  
  /* Typography weight tokens */
  --cs-prose-weight-light: 300;
  --cs-prose-weight-normal: 400;
  --cs-prose-weight-medium: 500;
  --cs-prose-weight-semibold: 600;
  --cs-prose-weight-bold: 700;
  --cs-prose-weight-extrabold: 800;
  --cs-prose-weight-black: 900;
  
  /* Typography family tokens */
  --cs-prose-font-sans: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, 'Noto Sans', sans-serif;
  --cs-prose-font-serif: Georgia, 'Times New Roman', Times, serif;
  --cs-prose-font-mono: 'SF Mono', Monaco, 'Cascadia Code', 'Roboto Mono', Consolas, 'Courier New', monospace;
  
  /* Typography spacing tokens */
  --cs-prose-spacing-tight: 1.25rem;
  --cs-prose-spacing-normal: 1.5rem;
  --cs-prose-spacing-relaxed: 1.75rem;
  --cs-prose-spacing-loose: 2rem;
  
  /* Code styling tokens */
  --cs-prose-code-bg: color-mix(in srgb, currentColor 8%, transparent);
  --cs-prose-code-border: color-mix(in srgb, currentColor 10%, transparent);
  --cs-prose-pre-bg: color-mix(in srgb, currentColor 5%, transparent);
}

/* =========================================================
   BASE LAYER - Core accessibility and utilities
   ========================================================= */

/* Core Accessibility Utilities */
/* =========================================================
   BASE ACCESSIBILITY UTILITIES
   ========================================================= */

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

/* Focus management utilities */
@utility cs-focus-ring {
  outline: none;
  
  &:focus-visible {
    outline: 2px solid transparent;
    outline-offset: 2px;
    box-shadow: 0 0 0 2px var(--cs-brand, #4f7cff), 0 0 0 4px color-mix(in srgb, var(--cs-brand, #4f7cff) 20%, transparent);
    transition: box-shadow var(--cs-transition);
  }
}

@utility cs-focus-ring-within {
  &:focus-within {
    box-shadow: 0 0 0 2px var(--cs-brand, #4f7cff), 0 0 0 6px color-mix(in srgb, var(--cs-brand, #4f7cff) 22%, transparent);
    border-radius: var(--cs-radius);
  }
}

/* Core Layout Utilities */
/* =========================================================
   BASE LAYOUT UTILITIES
   ========================================================= */

/* Container utilities */
@utility cs-container-fluid {
  width: 100%;
  padding-left: var(--cs-page-pad);
  padding-right: var(--cs-page-pad);
  margin-left: auto;
  margin-right: auto;
  max-width: none;
  background-color: var(--cs-surface, #14161a);
  color: var(--cs-text, #eef1f6);
  
  @media (min-width: 768px) {
    padding-left: calc(var(--cs-page-pad) + var(--cs-space-2));
    padding-right: calc(var(--cs-page-pad) + var(--cs-space-2));
  }
  
  @media (min-width: 1200px) {
    max-width: var(--cs-page-max);
  }
}

/* Z-Index utilities - Complete scale */
@utility cs-z-0 { z-index: var(--cs-z-0); position: relative; }
@utility cs-z-1 { z-index: var(--cs-z-1); position: relative; }
@utility cs-z-base { z-index: var(--cs-z-base); position: relative; }
@utility cs-z-10 { z-index: var(--cs-z-10); position: relative; }
@utility cs-z-20 { z-index: var(--cs-z-20); position: relative; }
@utility cs-z-30 { z-index: var(--cs-z-30); position: relative; }
@utility cs-z-popover { z-index: var(--cs-z-popover); position: relative; }
@utility cs-z-40 { z-index: var(--cs-z-40); position: relative; }
@utility cs-z-tooltip { z-index: var(--cs-z-tooltip); position: relative; }
@utility cs-z-50 { z-index: var(--cs-z-50); position: relative; }
@utility cs-z-toast { z-index: var(--cs-z-toast); position: relative; }
@utility cs-z-60 { z-index: var(--cs-z-60); position: relative; }
@utility cs-z-modal { z-index: var(--cs-z-modal); position: relative; }
@utility cs-z-70 { z-index: var(--cs-z-70); position: relative; }
@utility cs-z-80 { z-index: var(--cs-z-80); position: relative; }
@utility cs-z-90 { z-index: var(--cs-z-90); position: relative; }
@utility cs-z-100 { z-index: var(--cs-z-100); position: relative; }
@utility cs-z-200 { z-index: var(--cs-z-200); position: relative; }
@utility cs-z-300 { z-index: var(--cs-z-300); position: relative; }
@utility cs-z-400 { z-index: var(--cs-z-400); position: relative; }
@utility cs-z-500 { z-index: var(--cs-z-500); position: relative; }
@utility cs-z-600 { z-index: var(--cs-z-600); position: relative; }
@utility cs-z-700 { z-index: var(--cs-z-700); position: relative; }
@utility cs-z-800 { z-index: var(--cs-z-800); position: relative; }
@utility cs-z-900 { z-index: var(--cs-z-900); position: relative; }
@utility cs-z-999 { z-index: var(--cs-z-999); position: relative; }
@utility cs-z-high { z-index: var(--cs-z-high); position: relative; }
@utility cs-z-9999 { z-index: var(--cs-z-9999); position: relative; }
@utility cs-z-max { z-index: var(--cs-z-max); position: relative; }

/* Additional semantic z-index utilities from v0.8.x */
@utility cs-z-drawer { z-index: var(--cs-z-drawer); position: relative; }
@utility cs-z-dropdown { z-index: var(--cs-z-dropdown); position: relative; }
@utility cs-z-fixed { z-index: var(--cs-z-fixed); position: fixed; }
@utility cs-z-nav { z-index: var(--cs-z-nav); position: relative; }
@utility cs-z-nav-overlay { z-index: var(--cs-z-nav-overlay); position: relative; }
@utility cs-z-orb { z-index: var(--cs-z-orb); position: relative; }
@utility cs-z-overlay { z-index: var(--cs-z-overlay); position: relative; }
@utility cs-z-sticky { z-index: var(--cs-z-sticky); position: sticky; }

/* =========================================================
   LAYOUT UTILITIES
   Page layout and spacing utilities
   ========================================================= */
@utility cs-page-max { max-width: var(--cs-page-max); }
@utility cs-page-pad { padding: var(--cs-page-pad); }

/* Shadow utilities */
@utility cs-shadow-0 { box-shadow: var(--cs-shadow-0); }
@utility cs-shadow-1 { box-shadow: var(--cs-shadow-1); }
@utility cs-shadow-2 { box-shadow: var(--cs-shadow-2); }

/* =========================================================
   COLOR SYSTEM UTILITIES
   Core color utilities from design tokens
   ========================================================= */
@utility cs-bg { background-color: var(--cs-bg); }
@utility cs-surface { background-color: var(--cs-surface); }
@utility cs-surface-2 { background-color: var(--cs-surface-2); }
@utility cs-elev1 { background-color: var(--cs-elev1); }
@utility cs-elev2 { background-color: var(--cs-elev2); }
@utility cs-text { color: var(--cs-text); }
@utility cs-text-muted { color: var(--cs-text-muted); }
@utility cs-text-inverse { color: var(--cs-text-inverse); }
@utility cs-brand { color: var(--cs-brand); }
@utility cs-brand-contrast { color: var(--cs-brand-contrast); }
@utility cs-success { color: var(--cs-success); }
@utility cs-warning { color: var(--cs-warning); }
@utility cs-danger { color: var(--cs-danger); }
@utility cs-info { color: var(--cs-info); }
@utility cs-border { border-color: var(--cs-border); }


/* =========================================================
   COMPONENT SYSTEMS - All UI components
   ========================================================= */

/* Cards System - Feature, product, pricing cards */
/* =========================================================
   CARD SYSTEM COMPONENTS
   Standard card components without glass effects
   ========================================================= */

/* Feature Card Component */
@utility cs-card-feature {
  display: grid;
  grid-template-rows: auto auto 1fr;
  gap: var(--cs-card-space-lg, 1.5rem);
  background: var(--cs-card-bg, #ffffff);
  border: 1px solid var(--cs-card-border, #e5e7eb);
  border-radius: var(--cs-card-radius, 12px);
  box-shadow: var(--cs-card-shadow, 0 1px 2px rgba(0, 0, 0, 0.05));
  padding: var(--cs-card-space-xl, 2rem);
  text-align: center;
  position: relative;
  transition: var(--cs-card-transition, all 0.2s ease);
  
  &:hover {
    transform: translateY(var(--cs-card-hover-lift, -2px));
    box-shadow: var(--cs-card-shadow-hover, 0 4px 6px rgba(0, 0, 0, 0.07));
  }
}

/* Product Card Component */
@utility cs-card-product {
  background: var(--cs-card-bg, #ffffff);
  border-radius: var(--cs-card-radius, 12px);
  box-shadow: var(--cs-card-shadow, 0 1px 3px rgba(0, 0, 0, 0.1));
  transition: var(--cs-card-transition, all 0.2s ease);
  overflow: hidden;
  max-width: 20rem;
  display: flex;
  flex-direction: column;
  position: relative;
  
  &:hover {
    transform: translateY(var(--cs-card-hover-lift, -2px));
    box-shadow: var(--cs-card-shadow-hover, 0 4px 6px rgba(0, 0, 0, 0.1));
  }
}

/* Pricing Card Component */
@utility cs-card-pricing {
  display: grid;
  grid-template-rows: auto 1fr auto;
  background: var(--cs-card-bg, #ffffff);
  border: 2px solid var(--cs-card-border, #e5e7eb);
  border-radius: var(--cs-card-radius, 12px);
  box-shadow: var(--cs-card-shadow, 0 1px 3px rgba(0, 0, 0, 0.1));
  padding: var(--cs-card-space-xl, 2rem);
  text-align: center;
  position: relative;
  transition: var(--cs-card-transition, all 0.2s ease);
  
  &:hover {
    transform: translateY(var(--cs-card-hover-lift, -4px));
    box-shadow: var(--cs-card-shadow-hover, 0 8px 25px rgba(0, 0, 0, 0.15));
  }
}

/* Testimonial Card Component */
@utility cs-card-testimonial {
  background: var(--cs-card-bg, #ffffff);
  border-radius: var(--cs-card-radius, 12px);
  box-shadow: var(--cs-card-shadow, 0 1px 3px rgba(0, 0, 0, 0.1));
  transition: var(--cs-card-transition, all 0.2s ease);
  overflow: hidden;
  padding: var(--cs-card-padding, 1.5rem);
  max-width: 24rem;
  text-align: center;
  position: relative;
  
  &:hover {
    box-shadow: var(--cs-card-shadow-hover, 0 4px 6px rgba(0, 0, 0, 0.1));
    transform: translateY(var(--cs-card-hover-lift, -2px));
  }
}

/* =========================================================
   CARD HELPER COMPONENTS
   ========================================================= */

/* Card Image */
@utility cs-card-image {
  width: 100%;
  height: 12rem;
  object-fit: cover;
  background: color-mix(in srgb, currentColor 5%, transparent);
}

/* Card Content */
@utility cs-card-content {
  padding: var(--cs-card-padding, 1.5rem);
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

/* Card Title */
@utility cs-card-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--cs-card-text, currentColor);
  margin: 0;
  line-height: 1.3;
}

/* Card Description */
@utility cs-card-description {
  color: var(--cs-card-text-muted, color-mix(in srgb, currentColor 70%, transparent));
  line-height: 1.6;
  margin: 0;
  flex: 1;
}

/* Card Price */
@utility cs-card-price {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--cs-success, #059669);
  margin: 0;
}

/* Card Actions */
@utility cs-card-actions {
  padding: 0 var(--cs-card-padding, 1.5rem) var(--cs-card-padding, 1.5rem);
  display: flex;
  gap: 0.75rem;
}

/* Testimonial Quote */
@utility cs-testimonial-quote {
  font-size: 1.125rem;
  line-height: 1.6;
  font-style: italic;
  color: var(--cs-card-text-muted, color-mix(in srgb, currentColor 85%, transparent));
  margin-bottom: 1.5rem;
  position: relative;
  
  &::before {
    content: '"';
    position: absolute;
    top: -0.5rem;
    left: -0.5rem;
    font-size: 3rem;
    color: color-mix(in srgb, currentColor 20%, transparent);
    line-height: 1;
  }
}

/* Testimonial Author */
@utility cs-testimonial-author {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  margin-top: 1rem;
}

/* Primary Button for Cards */
@utility cs-button-primary-card {
  background: linear-gradient(135deg, var(--cs-brand, #3b82f6), color-mix(in srgb, var(--cs-brand, #3b82f6) 80%, #000000));
  color: var(--cs-brand-ink, #ffffff);
  border: none;
  padding: 0.75rem 1.5rem;
  border-radius: calc(var(--cs-radius, 10px) / 2);
  font-weight: 600;
  cursor: pointer;
  transition: all var(--cs-transition, 200ms ease);
  flex: 1;
  
  &:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 12px color-mix(in srgb, var(--cs-brand, #3b82f6) 40%, transparent);
  }
  
  &:focus {
    outline: 2px solid transparent;
    outline-offset: 2px;
    box-shadow: 0 0 0 2px var(--cs-brand, #3b82f6), 0 0 0 4px color-mix(in srgb, var(--cs-brand, #3b82f6) 20%, transparent);
  }
}

/* Forms System - Input, labels, validation */
/* =========================================================
   FORMS SYSTEM COMPONENTS
   Complete form system with modern styling
   ========================================================= */

/* Form Base */
@utility cs-form-base {
  display: flex;
  flex-direction: column;
  gap: var(--cs-space-4, 1rem);
}

/* Input Base */
@utility cs-input-base {
  padding: var(--cs-space-3, 12px) var(--cs-space-4, 16px);
  border: 1px solid var(--cs-form-border, #e5e7eb);
  border-radius: var(--cs-form-radius, 8px);
  transition: var(--cs-transition, 180ms ease);
  background: var(--cs-form-bg, #ffffff);
  color: var(--cs-text, #111827);
  
  &:focus {
    outline: none;
    border-color: var(--cs-form-focus, #3b82f6);
    box-shadow: 0 0 0 3px color-mix(in srgb, var(--cs-form-focus, #3b82f6) 15%, transparent);
  }
}

/* Modern Form */
@utility cs-form-modern {
  display: flex;
  flex-direction: column;
  gap: var(--cs-space-4, 1rem);
  max-width: 32rem;
  margin: 0 auto;
  padding: 2rem;
  background: var(--cs-card-bg, #ffffff);
  border-radius: var(--cs-radius, 10px);
  box-shadow: var(--cs-shadow-1, 0 1px 3px rgba(0, 0, 0, 0.1));
}

/* Modern Input */
@utility cs-input-modern {
  padding: var(--cs-space-3, 12px) var(--cs-space-4, 16px);
  border: 2px solid color-mix(in srgb, currentColor 10%, transparent);
  border-radius: var(--cs-form-radius, 8px);
  transition: var(--cs-transition, 180ms ease);
  background: var(--cs-form-bg, #ffffff);
  font-size: var(--cs-fs-md, 1rem);
  line-height: var(--cs-line, 1.5);
  color: var(--cs-text, #111827);
  
  &:focus {
    outline: none;
    border-color: var(--cs-form-focus, #3b82f6);
    box-shadow: 0 0 0 3px color-mix(in srgb, var(--cs-form-focus, #3b82f6) 20%, transparent);
  }
  
  &::placeholder {
    color: var(--cs-text-muted, #6b7280);
  }
}

/* Modern Label */
@utility cs-label-modern {
  font-weight: 600;
  color: var(--cs-text, #111827);
  margin-bottom: 0.5rem;
  display: block;
  font-size: var(--cs-fs-sm, 0.875rem);
}

/* Modern Primary Button */
@utility cs-button-primary-modern {
  background: linear-gradient(135deg, var(--cs-brand, #3b82f6), color-mix(in srgb, var(--cs-brand, #3b82f6) 80%, #000000));
  color: var(--cs-brand-ink, #ffffff);
  border: none;
  padding: 0.875rem 1.5rem;
  border-radius: var(--cs-form-radius, 8px);
  font-weight: 600;
  cursor: pointer;
  transition: var(--cs-transition, 180ms ease);
  font-size: var(--cs-fs-md, 1rem);
  
  &:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px color-mix(in srgb, var(--cs-brand, #3b82f6) 30%, transparent);
  }
  
  &:focus {
    outline: 2px solid transparent;
    outline-offset: 2px;
    box-shadow: 0 0 0 2px var(--cs-brand, #3b82f6), 0 0 0 4px color-mix(in srgb, var(--cs-brand, #3b82f6) 20%, transparent);
  }
}

/* Form Group */
@utility cs-form-group {
  position: relative;
  margin-bottom: var(--cs-space-4, 1rem);
}

/* =========================================================
   FORM VALIDATION SYSTEM
   ========================================================= */

/* Form Validation States */
@utility cs-input-validation {
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  margin-top: 0.25rem;
  font-size: 0.875rem;
  display: none;
  align-items: center;
  gap: 0.25rem;
}

@utility cs-validation-error {
  display: flex;
  color: var(--cs-danger, #ef4444);
}

@utility cs-validation-success {
  display: flex;
  color: var(--cs-success, #22c55e);
}

@utility cs-validation-icon {
  font-size: 1rem;
  line-height: 1;
}

@utility cs-input-error {
  border-color: var(--cs-danger, #ef4444) !important;
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--cs-danger, #ef4444) 20%, transparent) !important;
}

@utility cs-input-success {
  border-color: var(--cs-success, #22c55e) !important;
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--cs-success, #22c55e) 20%, transparent) !important;
}

/* =========================================================
   INPUT GROUP UTILITIES
   ========================================================= */

/* Input Group Utilities */
@utility cs-input-group {
  position: relative;
  display: flex;
  align-items: stretch;
}

@utility cs-input-addon {
  display: flex;
  align-items: center;
  padding: 0 0.75rem;
  background: color-mix(in srgb, currentColor 5%, transparent);
  border: 1px solid var(--cs-form-border, #e5e7eb);
  color: var(--cs-text-muted, #6b7280);
  font-size: 0.875rem;
}

@utility cs-input-addon-left {
  border-right: none;
  border-radius: var(--cs-form-radius, 8px) 0 0 var(--cs-form-radius, 8px);
}

@utility cs-input-addon-right {
  border-left: none;
  border-radius: 0 var(--cs-form-radius, 8px) var(--cs-form-radius, 8px) 0;
}

@utility cs-input-with-addon-left {
  border-radius: 0 var(--cs-form-radius, 8px) var(--cs-form-radius, 8px) 0;
  border-left: none;
}

@utility cs-input-with-addon-right {
  border-radius: var(--cs-form-radius, 8px) 0 0 var(--cs-form-radius, 8px);
  border-right: none;
}

/* =========================================================
   FORM LAYOUT UTILITIES
   ========================================================= */

/* Form Layout Utilities */
@utility cs-form-row {
  display: flex;
  gap: var(--cs-space-4, 1rem);
  align-items: flex-start;
}

@utility cs-form-col {
  flex: 1;
  min-width: 0;
}

/* =========================================================
   FORM TOKEN UTILITIES
   Direct form token utilities from design system
   ========================================================= */
@utility cs-form-bg { background-color: var(--cs-form-bg); }
@utility cs-form-border { border-color: var(--cs-form-border); }
@utility cs-form-radius { border-radius: var(--cs-form-radius); }
@utility cs-form-shadow { box-shadow: var(--cs-form-shadow); }
@utility cs-form-focus { border-color: var(--cs-form-focus); }


/* =========================================================
   INTEGRATED SYSTEMS - Complex feature systems
   ========================================================= */

/* Typography System - Prose, callouts, lead text */
/* =========================================================
   TYPOGRAPHY SYSTEM
   ========================================================= */

/* Prose typography system */
.cs-prose {
  color: var(--cs-prose-body);
  max-width: 65ch;
  line-height: 1.75;
  font-size: var(--cs-fs-md);
}

.cs-prose h1,
.cs-prose h2,
.cs-prose h3,
.cs-prose h4,
.cs-prose h5,
.cs-prose h6 {
  color: var(--cs-prose-headings);
  font-weight: 700;
  line-height: 1.25;
  margin-top: 2rem;
  margin-bottom: 0.75rem;
}

.cs-prose h1 { font-size: var(--cs-fs-2xl); }
.cs-prose h2 { font-size: var(--cs-fs-xl); }
.cs-prose h3 { font-size: var(--cs-fs-lg); }

.cs-prose p {
  margin-bottom: 1.25rem;
  line-height: 1.7;
}

.cs-prose a {
  color: var(--cs-prose-links);
  text-decoration: underline;
  text-underline-offset: 0.2em;
}

.cs-prose a:hover {
  text-decoration: none;
}

.cs-prose strong {
  color: var(--cs-prose-bold);
  font-weight: 600;
}

.cs-prose ul,
.cs-prose ol {
  margin-left: 1.5rem;
  margin-bottom: 1.25rem;
}

.cs-prose li {
  margin-bottom: 0.5rem;
}

.cs-prose blockquote {
  border-left: 4px solid var(--cs-border);
  padding-left: 1.5rem;
  margin: 1.5rem 0;
  font-style: italic;
  color: var(--cs-prose-quotes);
}

.cs-prose code {
  background: color-mix(in srgb, currentColor 8%, transparent);
  padding: 0.25rem 0.375rem;
  border-radius: 0.25rem;
  font-size: 0.875em;
  font-family: var(--cs-font-mono);
}

.cs-prose pre {
  background: var(--cs-elev1);
  padding: 1.25rem;
  border-radius: var(--cs-radius);
  overflow-x: auto;
  margin: 1.5rem 0;
}

.cs-prose pre code {
  background: none;
  padding: 0;
}

.cs-callout {
  padding: var(--cs-space-4) var(--cs-space-6);
  border-radius: var(--cs-radius);
  border-left: 4px solid var(--cs-info);
  background: color-mix(in srgb, var(--cs-info) 5%, var(--cs-surface));
  color: var(--cs-text);
  margin: 1.5rem 0;
}

.cs-callout.cs-callout-info {
  border-left-color: var(--cs-info);
  background: color-mix(in srgb, var(--cs-info) 5%, var(--cs-surface));
}

.cs-callout.cs-callout-warning {
  border-left-color: var(--cs-warning);
  background: color-mix(in srgb, var(--cs-warning) 5%, var(--cs-surface));
}

.cs-callout.cs-callout-danger {
  border-left-color: var(--cs-danger);
  background: color-mix(in srgb, var(--cs-danger) 5%, var(--cs-surface));
}

.cs-callout.cs-callout-success {
  border-left-color: var(--cs-success);
  background: color-mix(in srgb, var(--cs-success) 5%, var(--cs-surface));
}

.cs-lead {
  font-size: var(--cs-fs-lg);
  line-height: 1.6;
  color: var(--cs-text-muted);
}

/* =========================================================
   FLUID TYPOGRAPHY UTILITIES
   Responsive typography using CSS clamp()
   ========================================================= */
@utility cs-fs-xs { font-size: var(--cs-fs-xs); }
@utility cs-fs-sm { font-size: var(--cs-fs-sm); }
@utility cs-fs-md { font-size: var(--cs-fs-md); }
@utility cs-fs-lg { font-size: var(--cs-fs-lg); }
@utility cs-fs-xl { font-size: var(--cs-fs-xl); }
@utility cs-fs-2xl { font-size: var(--cs-fs-2xl); }

/* Line Height utilities */
@utility cs-leading-relaxed { line-height: var(--cs-leading-relaxed); }
@utility cs-leading-loose { line-height: var(--cs-leading-loose); }

/* Text Balance utility */
@utility cs-text-balance { text-wrap: var(--cs-text-balance); }


/* Navigation System - Navbar, links, brand */
/* =========================================================
   NAVIGATION SYSTEM
   ========================================================= */

@utility cs-navbar {
  position: relative;
  z-index: var(--cs-z-40, 40);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
  padding: 0.75rem 1rem;
  background-color: var(--cs-surface, #ffffff);
  border-bottom: 1px solid var(--cs-border, #e5e7eb);
  transition: var(--cs-transition, 180ms ease);
}

@utility cs-navbar-brand {
  display: inline-block;
  padding: 0.3125rem 0;
  margin-right: 1rem;
  font-size: 1.25rem;
  font-weight: 600;
  line-height: 1.2;
  white-space: nowrap;
  text-decoration: none;
  color: var(--cs-text, #111827);
  
  &:hover {
    text-decoration: none;
  }
}

@utility cs-navbar-nav {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

@utility cs-navbar-link {
  display: inline-block;
  padding: 0.75rem 1rem;
  color: var(--cs-text-muted, #6b7280);
  text-decoration: none;
  font-weight: 500;
  border-radius: 0.375rem;
  transition: var(--cs-transition, 180ms ease);
  
  &:hover {
    color: var(--cs-text);
    background-color: color-mix(in srgb, currentColor 8%, transparent);
    text-decoration: none;
  }
  
  &.active {
    color: var(--cs-brand);
    background-color: color-mix(in srgb, var(--cs-brand) 10%, transparent);
  }
}

/* Gradient System - CASOON signature gradients */
/* =========================================================
   COMPREHENSIVE GRADIENT SYSTEM - Complete Collection
   ========================================================= */

/* =========================================================
   Core Gradient Background Utilities
   ========================================================= */

@utility cs-gradient-sunset {
  background: linear-gradient(135deg,
    var(--cs-gradient-sunset-start),
    var(--cs-gradient-sunset-mid, var(--cs-gradient-sunset-end)),
    var(--cs-gradient-sunset-end)
  );
}

@utility cs-gradient-ocean {
  background: linear-gradient(135deg,
    var(--cs-gradient-ocean-start),
    var(--cs-gradient-ocean-end)
  );
}

@utility cs-gradient-fire {
  background: linear-gradient(135deg,
    var(--cs-gradient-fire-start),
    var(--cs-gradient-fire-end)
  );
}

@utility cs-gradient-mint {
  background: linear-gradient(135deg,
    var(--cs-gradient-mint-start),
    var(--cs-gradient-mint-end)
  );
}

@utility cs-gradient-purple {
  background: linear-gradient(135deg,
    var(--cs-gradient-purple-start),
    var(--cs-gradient-purple-end)
  );
}

@utility cs-gradient-orange {
  background: linear-gradient(135deg,
    var(--cs-gradient-orange-start),
    var(--cs-gradient-orange-end)
  );
}

@utility cs-gradient-blue {
  background: linear-gradient(135deg,
    var(--cs-gradient-blue-start),
    var(--cs-gradient-blue-end)
  );
}

@utility cs-gradient-pink {
  background: linear-gradient(135deg,
    var(--cs-gradient-pink-start),
    var(--cs-gradient-pink-end)
  );
}

/* Custom gradient variants - 2-stop and 3-stop */
@utility cs-gradient-custom-2 {
  background: linear-gradient(135deg,
    var(--cs-gradient-custom-start),
    var(--cs-gradient-custom-end)
  );
}

@utility cs-gradient-custom {
  background: linear-gradient(135deg,
    var(--cs-gradient-custom-start),
    var(--cs-gradient-custom-mid, var(--cs-gradient-custom-end)),
    var(--cs-gradient-custom-end)
  );
}

@utility cs-gradient-custom-3 {
  background: linear-gradient(135deg,
    var(--cs-gradient-custom-start),
    var(--cs-gradient-custom-mid, var(--cs-gradient-custom-end)),
    var(--cs-gradient-custom-end)
  );
}

/* =========================================================
   Directional Fade Gradients
   ========================================================= */

/* Basic directional fades */
@utility cs-gradient-fade-r {
  background: linear-gradient(to right, 
    var(--cs-gradient-fade-color, rgba(79, 124, 255, 0.6)) 0%,
    var(--cs-gradient-fade-mid, rgba(79, 124, 255, 0.3)) 50%,
    transparent 100%
  );
}

@utility cs-gradient-fade-l {
  background: linear-gradient(to left, 
    var(--cs-gradient-fade-color, rgba(79, 124, 255, 0.6)) 0%,
    var(--cs-gradient-fade-mid, rgba(79, 124, 255, 0.3)) 50%,
    transparent 100%
  );
}

@utility cs-gradient-fade-b {
  background: linear-gradient(to bottom, 
    var(--cs-gradient-fade-color, rgba(79, 124, 255, 0.6)) 0%,
    var(--cs-gradient-fade-mid, rgba(79, 124, 255, 0.3)) 50%,
    transparent 100%
  );
}

@utility cs-gradient-fade-t {
  background: linear-gradient(to top, 
    var(--cs-gradient-fade-color, rgba(79, 124, 255, 0.6)) 0%,
    var(--cs-gradient-fade-mid, rgba(79, 124, 255, 0.3)) 50%,
    transparent 100%
  );
}

/* Diagonal fade variants */
@utility cs-gradient-fade-br {
  background: linear-gradient(to bottom right, 
    var(--cs-gradient-fade-color, rgba(79, 124, 255, 0.6)) 0%,
    transparent 100%
  );
}

@utility cs-gradient-fade-bl {
  background: linear-gradient(to bottom left, 
    var(--cs-gradient-fade-color, rgba(79, 124, 255, 0.6)) 0%,
    transparent 100%
  );
}

@utility cs-gradient-fade-tr {
  background: linear-gradient(to top right, 
    var(--cs-gradient-fade-color, rgba(79, 124, 255, 0.6)) 0%,
    transparent 100%
  );
}

@utility cs-gradient-fade-tl {
  background: linear-gradient(to top left, 
    var(--cs-gradient-fade-color, rgba(79, 124, 255, 0.6)) 0%,
    transparent 100%
  );
}

/* Intensity variants for fade gradients */
@utility cs-gradient-fade-subtle {
  --cs-gradient-fade-color: rgba(79, 124, 255, 0.3);
  --cs-gradient-fade-mid: rgba(79, 124, 255, 0.1);
}

@utility cs-gradient-fade-medium {
  --cs-gradient-fade-color: rgba(79, 124, 255, 0.6);
  --cs-gradient-fade-mid: rgba(79, 124, 255, 0.3);
}

@utility cs-gradient-fade-strong {
  --cs-gradient-fade-color: rgba(79, 124, 255, 0.8);
  --cs-gradient-fade-mid: rgba(79, 124, 255, 0.5);
}

/* Smooth fade with color-mix support */
@utility cs-gradient-fade-smooth {
  background: linear-gradient(135deg, 
    var(--cs-gradient-fade-color, rgba(79, 124, 255, 0.6)) 0%,
    transparent 100%
  );
  
  @supports (background: color-mix(in srgb, red 50%, transparent)) {
    background: linear-gradient(135deg, 
      var(--cs-gradient-fade-color, rgba(79, 124, 255, 0.6)) 0%,
      color-mix(in srgb, var(--cs-gradient-fade-color, rgba(79, 124, 255, 0.6)) 30%, transparent) 60%,
      transparent 100%
    );
  }
}

/* =========================================================
   Radial Gradient Utilities
   ========================================================= */

@utility cs-gradient-radial-fade {
  background: radial-gradient(circle at center, 
    var(--cs-gradient-fade-color, rgba(79, 124, 255, 0.6)) 0%,
    var(--cs-gradient-fade-mid, rgba(79, 124, 255, 0.2)) 40%,
    transparent 70%
  );
}

@utility cs-gradient-radial-fade-tl {
  background: radial-gradient(circle at top left, 
    var(--cs-gradient-fade-color, rgba(79, 124, 255, 0.6)) 0%,
    transparent 60%
  );
}

@utility cs-gradient-radial-fade-tr {
  background: radial-gradient(circle at top right, 
    var(--cs-gradient-fade-color, rgba(79, 124, 255, 0.6)) 0%,
    transparent 60%
  );
}

@utility cs-gradient-radial-fade-bl {
  background: radial-gradient(circle at bottom left, 
    var(--cs-gradient-fade-color, rgba(79, 124, 255, 0.6)) 0%,
    transparent 60%
  );
}

@utility cs-gradient-radial-fade-br {
  background: radial-gradient(circle at bottom right, 
    var(--cs-gradient-fade-color, rgba(79, 124, 255, 0.6)) 0%,
    transparent 60%
  );
}

@utility cs-gradient-radial-center {
  background: radial-gradient(circle at center, var(--cs-gradient-stops));
}

@utility cs-gradient-radial-top {
  background: radial-gradient(circle at top, var(--cs-gradient-stops));
}

@utility cs-gradient-radial-bottom {
  background: radial-gradient(circle at bottom, var(--cs-gradient-stops));
}

/* =========================================================
   Conic Gradient Utilities
   ========================================================= */

@utility cs-gradient-conic {
  background: conic-gradient(var(--cs-gradient-stops));
}

@utility cs-gradient-conic-center {
  background: conic-gradient(from 0deg at 50% 50%, var(--cs-gradient-stops));
}

/* =========================================================
   Mesh Gradient (Multi-layer System)
   ========================================================= */

@utility cs-gradient-mesh {
  background: 
    radial-gradient(at 27% 37%, color-mix(in srgb, var(--cs-brand) 50%, transparent) 0px, transparent 50%),
    radial-gradient(at 97% 21%, color-mix(in srgb, var(--cs-info) 50%, transparent) 0px, transparent 50%),
    radial-gradient(at 52% 99%, color-mix(in srgb, var(--cs-success) 50%, transparent) 0px, transparent 50%),
    radial-gradient(at 10% 29%, color-mix(in srgb, var(--cs-warning) 50%, transparent) 0px, transparent 50%),
    radial-gradient(at 97% 96%, color-mix(in srgb, var(--cs-danger) 50%, transparent) 0px, transparent 50%),
    radial-gradient(at 33% 50%, color-mix(in srgb, var(--cs-brand) 50%, transparent) 0px, transparent 50%),
    radial-gradient(at 79% 53%, color-mix(in srgb, var(--cs-info) 50%, transparent) 0px, transparent 50%);
}

/* =========================================================
   CASOON SIGNATURE GRADIENT PRESETS
   ========================================================= */

/* CASOON Original - Your signature gradient */
@utility cs-bg-casoon-original {
  background: 
    radial-gradient(circle at 20% 80%, #1e40af 0%, transparent 50%), 
    radial-gradient(circle at 80% 20%, #0891b2 0%, transparent 50%), 
    radial-gradient(circle at 40% 40%, #f97316 0%, transparent 50%), 
    linear-gradient(135deg, #0f172a, #1e293b);
}

/* CASOON Theme Variations */
@utility cs-bg-casoon-warm {
  background: 
    radial-gradient(circle at 25% 75%, #dc2626 0%, transparent 55%), 
    radial-gradient(circle at 75% 25%, #f59e0b 0%, transparent 45%), 
    radial-gradient(circle at 50% 50%, #ea580c 0%, transparent 60%), 
    linear-gradient(135deg, #1f2937, #374151);
}

@utility cs-bg-casoon-cool {
  background: 
    radial-gradient(circle at 30% 70%, #3b82f6 0%, transparent 50%), 
    radial-gradient(circle at 70% 30%, #06b6d4 0%, transparent 55%), 
    radial-gradient(circle at 45% 45%, #8b5cf6 0%, transparent 45%), 
    linear-gradient(135deg, #111827, #1f2937);
}

@utility cs-bg-casoon-forest {
  background: 
    radial-gradient(circle at 15% 85%, #059669 0%, transparent 50%), 
    radial-gradient(circle at 85% 15%, #10b981 0%, transparent 60%), 
    radial-gradient(circle at 55% 35%, #065f46 0%, transparent 40%), 
    linear-gradient(135deg, #064e3b, #134e4a);
}

/* CASOON Utility Variants */
@utility cs-bg-casoon-animated {
  background: 
    radial-gradient(circle at 20% 80%, #1e40af 0%, transparent 50%), 
    radial-gradient(circle at 80% 20%, #0891b2 0%, transparent 50%), 
    radial-gradient(circle at 40% 40%, #f97316 0%, transparent 50%), 
    linear-gradient(135deg, #0f172a, #1e293b);
  background-size: 400% 400%;
  animation: cs-gradient-shift 8s ease-in-out infinite;
}

@utility cs-bg-casoon-subtle {
  background: 
    radial-gradient(circle at 20% 80%, #1e40af 0%, transparent 50%), 
    radial-gradient(circle at 80% 20%, #0891b2 0%, transparent 50%), 
    radial-gradient(circle at 40% 40%, #f97316 0%, transparent 50%), 
    linear-gradient(135deg, #0f172a, #1e293b);
  filter: brightness(0.8) saturate(0.7) opacity(0.9);
}

@utility cs-bg-casoon-intense {
  background: 
    radial-gradient(circle at 20% 80%, #1e40af 0%, transparent 50%), 
    radial-gradient(circle at 80% 20%, #0891b2 0%, transparent 50%), 
    radial-gradient(circle at 40% 40%, #f97316 0%, transparent 50%), 
    linear-gradient(135deg, #0f172a, #1e293b);
  filter: brightness(1.2) saturate(1.3) contrast(1.1);
}

/* =========================================================
   ADDITIONAL SIGNATURE PRESETS
   ========================================================= */

@utility cs-bg-nebula-purple {
  background: 
    radial-gradient(circle at 20% 20%, #8b5cf6 0%, transparent 70%), 
    radial-gradient(circle at 80% 80%, #ec4899 0%, transparent 60%), 
    radial-gradient(circle at 40% 60%, #3b82f6 0%, transparent 80%), 
    linear-gradient(135deg, #0c0a1d, #1e1b3b);
}

@utility cs-bg-deep-ocean {
  background: 
    radial-gradient(circle at 25% 25%, #1e40af 0%, transparent 65%), 
    radial-gradient(circle at 75% 75%, #0891b2 0%, transparent 55%), 
    radial-gradient(circle at 50% 80%, #0e7490 0%, transparent 70%), 
    linear-gradient(135deg, #0c1e3d, #164e63);
}

@utility cs-bg-corporate-blue {
  background: 
    radial-gradient(circle at 30% 30%, #1e40af 0%, transparent 70%), 
    radial-gradient(circle at 70% 70%, #3b82f6 0%, transparent 60%), 
    radial-gradient(circle at 50% 50%, #1d4ed8 0%, transparent 80%), 
    linear-gradient(135deg, #1e3a8a, #1e40af);
}

/* =========================================================
   GRADIENT TEXT UTILITIES
   ========================================================= */

@utility cs-gradient-text {
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

@utility cs-gradient-text-sunset {
  background: linear-gradient(135deg,
    var(--cs-gradient-sunset-start),
    var(--cs-gradient-sunset-mid, var(--cs-gradient-sunset-end)),
    var(--cs-gradient-sunset-end)
  );
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

@utility cs-gradient-text-ocean {
  background: linear-gradient(135deg,
    var(--cs-gradient-ocean-start),
    var(--cs-gradient-ocean-end)
  );
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

@utility cs-gradient-text-fire {
  background: linear-gradient(135deg,
    var(--cs-gradient-fire-start),
    var(--cs-gradient-fire-end)
  );
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

@utility cs-gradient-text-custom-2 {
  background: linear-gradient(135deg,
    var(--cs-gradient-custom-start),
    var(--cs-gradient-custom-end)
  );
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

@utility cs-gradient-text-custom {
  background: linear-gradient(135deg,
    var(--cs-gradient-custom-start),
    var(--cs-gradient-custom-mid, var(--cs-gradient-custom-end)),
    var(--cs-gradient-custom-end)
  );
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

@utility cs-gradient-text-custom-3 {
  background: linear-gradient(135deg,
    var(--cs-gradient-custom-start),
    var(--cs-gradient-custom-mid, var(--cs-gradient-custom-end)),
    var(--cs-gradient-custom-end)
  );
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

/* =========================================================
   GRADIENT ANIMATION UTILITIES
   ========================================================= */

@utility cs-gradient-animate {
  background-size: 400% 400%;
  animation: cs-gradient-shift var(--cs-anim-gradient-duration) var(--cs-anim-gradient-ease) var(--cs-anim-gradient-iteration);
}

@utility cs-gradient-shift-x {
  background-size: 200% 100%;
  animation: cs-gradient-shift-x 3s linear infinite;
}

@utility cs-gradient-shift-y {
  background-size: 100% 200%;
  animation: cs-gradient-shift-y 3s linear infinite;
}

@utility cs-gradient-rotate {
  background-size: 200% 200%;
  animation: cs-gradient-rotate 8s linear infinite;
}

@utility cs-gradient-pulse {
  animation: cs-gradient-pulse 2s ease-in-out infinite;
  transform-origin: center;
}

@utility cs-gradient-pulse-slow {
  animation: cs-gradient-pulse-slow 4s ease-in-out infinite;
}

@utility cs-gradient-breathe {
  animation: cs-gradient-breathe 3s ease-in-out infinite;
  transform-origin: center;
}

@utility cs-gradient-wave {
  background-size: 300% 300%, 300% 300%;
  animation: cs-gradient-wave 6s ease-in-out infinite;
}

@utility cs-gradient-shimmer {
  background-size: 200% 100%;
  animation: cs-gradient-shimmer 2s linear infinite;
}

/* Speed and direction variants */
@utility cs-gradient-animate-slow {
  animation-duration: 8s;
}

@utility cs-gradient-animate-fast {
  animation-duration: 1.5s;
}

@utility cs-gradient-animate-reverse {
  animation-direction: reverse;
}

@utility cs-gradient-animate-alternate {
  animation-direction: alternate;
}

@utility cs-gradient-animate-hover-pause {
  &:hover {
    animation-play-state: paused;
  }
}

/* =========================================================
   ADVANCED GRADIENT EFFECTS
   ========================================================= */

@utility cs-gradient-shine {
  background: linear-gradient(90deg, rgba(255,255,255,0.05) 0%, rgba(255,255,255,0.15) 50%, rgba(255,255,255,0.05) 100%);
  background-size: 200% 100%;
  animation: cs-gradient-shine 3s linear infinite;
}

@utility cs-hover-ripple {
  position: relative;
  overflow: hidden;
  isolation: isolate;
  
  &::after {
    content: "";
    position: absolute;
    top: 50%;
    left: 50%;
    width: 200px;
    height: 200px;
    background: radial-gradient(circle, rgba(255,255,255,0.4) 10%, transparent 80%);
    transform: translate(-50%, -50%) scale(0);
    opacity: 0;
    pointer-events: none;
    border-radius: 9999px;
    animation: none;
    z-index: 1;
  }
  
  &:active::after {
    animation: cs-hover-ripple 0.6s ease-out;
  }
}

@utility cs-gradient-ambient-rotate {
  background: conic-gradient(from 0deg, var(--cs-gradient-stops));
  animation: cs-ambient-rotate 20s linear infinite;
}

@utility cs-gradient-zoom-fade {
  animation: cs-gradient-zoom-fade 800ms var(--cs-anim-ease-in-out) both;
}

/* =========================================================
   GRADIENT BORDER COMPONENT
   ========================================================= */

@utility cs-gradient-border {
  position: relative;
  border-radius: 0.5rem;
  background: linear-gradient(135deg,
    var(--cs-gradient-ocean-start),
    var(--cs-gradient-ocean-end)
  );
  
  &::before {
    content: "";
    position: absolute;
    inset: 1px;
    background: var(--cs-gradient-white);
    border-radius: calc(0.5rem - 1px);
    z-index: 0;
  }
  
  & > * {
    position: relative;
    z-index: 1;
  }
}

/* =========================================================
   ANIMATION KEYFRAMES
   ========================================================= */

@keyframes cs-gradient-shift {
  0%, 100% { 
    background-position: 0% 50%; 
  }
  50% { 
    background-position: 100% 50%; 
  }
}

@keyframes cs-gradient-shift-x {
  0% { background-position: 0% 50%; }
  100% { background-position: 100% 50%; }
}

@keyframes cs-gradient-shift-y {
  0% { background-position: 50% 0%; }
  100% { background-position: 50% 100%; }
}

@keyframes cs-gradient-rotate {
  0% { background-position: 0% 0%; }
  25% { background-position: 100% 0%; }
  50% { background-position: 100% 100%; }
  75% { background-position: 0% 100%; }
  100% { background-position: 0% 0%; }
}

@keyframes cs-gradient-pulse {
  0%, 100% { opacity: 0.6; transform: scale(1); }
  50% { opacity: 1; transform: scale(1.05); }
}

@keyframes cs-gradient-pulse-slow {
  0%, 100% { opacity: 0.4; }
  50% { opacity: 0.9; }
}

@keyframes cs-gradient-breathe {
  0%, 100% { 
    filter: brightness(0.8) saturate(1.2);
    transform: scale(1);
  }
  50% { 
    filter: brightness(1.2) saturate(1.8);
    transform: scale(1.02);
  }
}

@keyframes cs-gradient-wave {
  0% { background-position: 0% 50%, 100% 50%; }
  25% { background-position: 50% 0%, 50% 100%; }
  50% { background-position: 100% 50%, 0% 50%; }
  75% { background-position: 50% 100%, 50% 0%; }
  100% { background-position: 0% 50%, 100% 50%; }
}

@keyframes cs-gradient-shimmer {
  0% { background-position: -200% 0; }
  100% { background-position: 200% 0; }
}

@keyframes cs-gradient-shine {
  0% { background-position: -200% 0; }
  100% { background-position: 200% 0; }
}

@keyframes cs-hover-ripple {
  0% { transform: translate(-50%, -50%) scale(0); opacity: 0.8; }
  100% { transform: translate(-50%, -50%) scale(2); opacity: 0; }
}

@keyframes cs-ambient-rotate {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

@keyframes cs-gradient-zoom-fade {
  0% { opacity: 0; transform: scale(1.05); }
  100% { opacity: 1; transform: scale(1); }
}

/* =========================================================
   ACCESSIBILITY & PERFORMANCE
   ========================================================= */

/* Reduced motion support */
@media (prefers-reduced-motion: reduce) {
  .cs-bg-casoon-animated,
  .cs-gradient-animate,
  .cs-gradient-shift-x,
  .cs-gradient-shift-y,
  .cs-gradient-rotate,
  .cs-gradient-pulse,
  .cs-gradient-pulse-slow,
  .cs-gradient-breathe,
  .cs-gradient-wave,
  .cs-gradient-shimmer,
  .cs-gradient-shine,
  .cs-gradient-ambient-rotate,
  .cs-gradient-zoom-fade {
    animation: none !important;
    background-size: 100% 100% !important;
  }
  
  .cs-hover-ripple::after {
    animation: none !important;
  }
}

/* High contrast mode support */
@media (prefers-contrast: high) {
  .cs-bg-casoon-original,
  .cs-bg-casoon-warm,
  .cs-bg-casoon-cool,
  .cs-bg-casoon-forest,
  .cs-bg-casoon-animated,
  .cs-bg-casoon-subtle,
  .cs-bg-casoon-intense {
    filter: contrast(1.5) brightness(1.2) !important;
  }
}

/* High-contrast/forced colors mode for gradient border */
@media (prefers-contrast: more) {
  .cs-gradient-border::before {
    outline: 1px solid currentColor;
    outline-offset: -1px;
  }
}

@media (forced-colors: active) {
  .cs-gradient-border {
    forced-color-adjust: none;
    background: CanvasText;
  }
  
  .cs-gradient-border::before {
    background: Canvas;
    border: 1px solid CanvasText;
  }
}

/* Performance optimizations for mobile */
@media (max-width: 480px) {
  .cs-gradient-animate {
    animation-duration: calc(var(--cs-anim-gradient-duration) * 1.25);
  }
}




/* TEMPORARY: Remaining systems inline until extracted */

/* SCROLL SYSTEM */
@utility cs-scrollbar-thin {
  scrollbar-width: thin;
  scrollbar-color: color-mix(in srgb, currentColor 20%, transparent) transparent;
  
  &::-webkit-scrollbar {
    width: 8px;
    height: 8px;
  }
  
  &::-webkit-scrollbar-track {
    background: transparent;
  }
  
  &::-webkit-scrollbar-thumb {
    background: color-mix(in srgb, currentColor 20%, transparent);
    border-radius: 4px;
    
    &:hover {
      background: color-mix(in srgb, currentColor 35%, transparent);
    }
  }
  
  &::-webkit-scrollbar-corner {
    background: transparent;
  }
}

@utility cs-scrollbar-custom {
  scrollbar-width: auto;
  scrollbar-color: var(--cs-brand) color-mix(in srgb, var(--cs-brand) 10%, transparent);
  
  &::-webkit-scrollbar {
    width: 12px;
    height: 12px;
  }
  
  &::-webkit-scrollbar-track {
    background: color-mix(in srgb, var(--cs-brand) 5%, transparent);
    border-radius: 6px;
  }
  
  &::-webkit-scrollbar-thumb {
    background: var(--cs-brand);
    border-radius: 6px;
    border: 2px solid color-mix(in srgb, var(--cs-brand) 5%, transparent);
    
    &:hover {
      background: color-mix(in srgb, var(--cs-brand) 85%, #000);
    }
  }
}

@utility cs-scroll-snap-x {
  scroll-snap-type: x mandatory;
  overflow-x: auto;
  overscroll-behavior-x: contain;
}

@utility cs-scroll-snap-y {
  scroll-snap-type: y mandatory;
  overflow-y: auto;
  overscroll-behavior-y: contain;
}

@utility cs-snap-start { scroll-snap-align: start; }
@utility cs-snap-center { scroll-snap-align: center; }
@utility cs-snap-end { scroll-snap-align: end; }
@utility cs-scroll-smooth { scroll-behavior: smooth; }

/* LOADING SYSTEM */
@utility cs-spinner {
  width: 1.5rem;
  height: 1.5rem;
  border: 2px solid color-mix(in srgb, currentColor 20%, transparent);
  border-radius: 50%;
  border-top-color: currentColor;
  animation: cs-spin 0.8s linear infinite;
}

@utility cs-spinner-lg {
  width: 2rem;
  height: 2rem;
  border-width: 3px;
}

@utility cs-spinner-sm {
  width: 1rem;
  height: 1rem;
  border-width: 2px;
}

@keyframes cs-spin {
  to { transform: rotate(360deg); }
}

@utility cs-pulse {
  animation: cs-pulse 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}

@keyframes cs-pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

@utility cs-skeleton {
  background: linear-gradient(90deg, 
    color-mix(in srgb, currentColor 10%, transparent) 0%,
    color-mix(in srgb, currentColor 18%, transparent) 50%,
    color-mix(in srgb, currentColor 10%, transparent) 100%
  );
  background-size: 200% 100%;
  animation: cs-skeleton 1.5s ease-in-out infinite;
  border-radius: 0.375rem;
}

@keyframes cs-skeleton {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}


/* MICRO INTERACTIONS */
@utility cs-hover-lift {
  transition: transform var(--cs-transition);
  
  &:hover {
    transform: translateY(-2px);
  }
}

@utility cs-hover-scale {
  transition: transform var(--cs-transition);
  
  &:hover {
    transform: scale(1.02);
  }
}

@utility cs-hover-glow {
  transition: box-shadow var(--cs-transition);
  
  &:hover {
    box-shadow: 0 8px 25px color-mix(in srgb, var(--cs-brand) 25%, transparent);
  }
}

@utility cs-interactive {
  transition: all var(--cs-transition);
  cursor: pointer;
  
  &:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 12px color-mix(in srgb, currentColor 15%, transparent);
  }
  
  &:active {
    transform: translateY(0);
    box-shadow: 0 2px 4px color-mix(in srgb, currentColor 20%, transparent);
  }
}

/* =========================================================
   RESPONSIVE & ACCESSIBILITY
   ========================================================= */

/* Print Optimizations */
@media print {
  .cs-prose {
    color: black !important;
  }
  
  .cs-navbar {
    display: none !important;
  }
  
  .cs-card {
    box-shadow: none !important;
    border: 1px solid #ccc !important;
  }
}

/* Reduced Motion Preferences */
@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}