/* ============================================================
   Design System Variables — Dark Premium Theme
   Inspired by nous.com aesthetic
   ============================================================ */

:root {
  /* ==================== Color Palette ==================== */

  /* Backgrounds */
  --bg-primary: #000000;
  --bg-secondary: #0A0A0A;
  --bg-tertiary: #111111;
  --bg-elevated: #141414;
  --bg-card: rgba(255, 255, 255, 0.03);
  --bg-card-hover: rgba(255, 255, 255, 0.05);
  --bg-input: #0A0A0A;

  /* Borders */
  --border-primary: rgba(255, 255, 255, 0.06);
  --border-secondary: rgba(255, 255, 255, 0.1);
  --border-hover: rgba(124, 92, 252, 0.4);
  --border-focus: rgba(124, 92, 252, 0.6);

  /* Text */
  --text-primary: #FFFFFF;
  --text-secondary: #999999;
  --text-tertiary: #666666;
  --text-muted: #444444;

  /* Accent Colors */
  --accent-purple: #7C5CFC;
  --accent-purple-light: #9B80FC;
  --accent-purple-dark: #6344E0;
  --accent-purple-glow: rgba(124, 92, 252, 0.15);
  --accent-purple-glow-strong: rgba(124, 92, 252, 0.3);
  --accent-cyan: #06B6D4;
  --accent-cyan-light: #22D3EE;
  --accent-cyan-dark: #0891B2;
  --accent-cyan-glow: rgba(6, 182, 212, 0.15);

  /* Semantic Colors */
  --success: #10B981;
  --success-bg: rgba(16, 185, 129, 0.1);
  --success-border: rgba(16, 185, 129, 0.3);
  --error: #EF4444;
  --error-bg: rgba(239, 68, 68, 0.1);
  --error-border: rgba(239, 68, 68, 0.3);
  --warning: #F59E0B;

  /* Legacy mappings (for any JS or external references) */
  --primary-orange: var(--accent-purple);
  --primary-dark: var(--text-primary);
  --accent-orange: var(--accent-purple-light);
  --white: #FFFFFF;

  /* ==================== Gradients ==================== */
  --gradient-hero-bg: radial-gradient(ellipse 80% 60% at 50% 40%, rgba(124, 92, 252, 0.12) 0%, rgba(6, 182, 212, 0.04) 40%, transparent 70%);
  --gradient-text: linear-gradient(180deg, #FFFFFF 0%, rgba(255, 255, 255, 0.5) 100%);
  --gradient-accent: linear-gradient(135deg, var(--accent-purple) 0%, var(--accent-cyan) 100%);
  --gradient-accent-subtle: linear-gradient(135deg, rgba(124, 92, 252, 0.2) 0%, rgba(6, 182, 212, 0.2) 100%);
  --gradient-card-shine: linear-gradient(135deg, rgba(255, 255, 255, 0.04) 0%, rgba(255, 255, 255, 0) 100%);
  --gradient-section-glow: radial-gradient(ellipse at center, rgba(124, 92, 252, 0.06) 0%, transparent 70%);
  --gradient-footer-border: linear-gradient(90deg, transparent, var(--accent-purple), var(--accent-cyan), transparent);

  /* ==================== Typography ==================== */
  --font-heading: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;

  /* Font Sizes */
  --fs-hero: clamp(3rem, 6vw, 4.5rem);
  --fs-h1: clamp(2.25rem, 4.5vw, 3.25rem);
  --fs-h2: clamp(1.875rem, 3.5vw, 2.5rem);
  --fs-h3: clamp(1.25rem, 2vw, 1.5rem);
  --fs-body: 1rem;
  --fs-body-lg: 1.125rem;
  --fs-small: 0.875rem;
  --fs-xs: 0.75rem;
  --fs-large: 1.125rem;

  /* Font Weights */
  --fw-regular: 400;
  --fw-medium: 500;
  --fw-semibold: 600;
  --fw-bold: 700;

  /* Letter Spacing */
  --ls-heading: -0.02em;
  --ls-tight: -0.01em;
  --ls-wide: 0.05em;
  --ls-wider: 0.1em;

  /* ==================== Spacing ==================== */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;
  --spacing-2xl: 4rem;
  --spacing-3xl: 6rem;
  --spacing-4xl: 8rem;

  /* ==================== Layout ==================== */
  --container-max: 1200px;
  --container-padding: 1.5rem;
  --section-padding: 6rem 0;
  --header-height: 64px;

  /* ==================== Border Radius ==================== */
  --radius-sm: 6px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --radius-2xl: 24px;
  --radius-full: 9999px;

  /* ==================== Shadows ==================== */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.4);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.5);
  --shadow-xl: 0 16px 48px rgba(0, 0, 0, 0.6);
  --shadow-purple: 0 0 20px rgba(124, 92, 252, 0.15);
  --shadow-purple-lg: 0 0 40px rgba(124, 92, 252, 0.2);
  --shadow-purple-glow: 0 4px 30px rgba(124, 92, 252, 0.25);
  --shadow-cyan: 0 0 20px rgba(6, 182, 212, 0.15);

  /* ==================== Transitions ==================== */
  --ease-out: cubic-bezier(0.4, 0, 0.2, 1);
  --ease-in-out: cubic-bezier(0.4, 0, 0.2, 1);
  --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 250ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 350ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slower: 500ms cubic-bezier(0.4, 0, 0.2, 1);

  /* ==================== Z-Index Scale ==================== */
  --z-base: 1;
  --z-elevated: 10;
  --z-header: 1000;
  --z-overlay: 1500;
  --z-modal: 2000;
  --z-tooltip: 3000;

  /* ==================== Glassmorphism ==================== */
  --glass-bg: rgba(0, 0, 0, 0.8);
  --glass-bg-light: rgba(0, 0, 0, 0.6);
  --glass-border: rgba(255, 255, 255, 0.06);
  --glass-blur: blur(12px);
  --glass-blur-heavy: blur(20px);

  /* ==================== Breakpoints (reference) ==================== */
  --bp-mobile: 320px;
  --bp-tablet: 768px;
  --bp-desktop: 1024px;
  --bp-large: 1440px;
}