/* ====================================
   ICIDA.COM.CY - Premium Design System
   "Cyber Trust" - B2B Tech Excellence
   ==================================== */

:root {
  /* ===== PRIMARY COLORS - Cyber Blue ===== */
  --color-primary: #0066FF;
  --color-primary-light: #3385FF;
  --color-primary-lighter: #66A3FF;
  --color-primary-dark: #0047B3;
  --color-primary-darker: #003380;

  /* ===== ACCENT COLORS ===== */
  --color-accent: #10B981;
  /* Energy Green for CTAs */
  --color-accent-light: #34D399;
  --color-accent-dark: #059669;

  --color-warning: #F59E0B;
  --color-error: #EF4444;
  --color-success: #10B981;
  --color-info: #3B82F6;

  /* ===== NEUTRAL COLORS - Clean Tech ===== */
  --color-white: #FFFFFF;
  --color-black: #000000;

  /* Grey Scale - Light Mode */
  --color-grey-50: #F8FAFC;
  --color-grey-100: #F1F5F9;
  --color-grey-200: #E2E8F0;
  --color-grey-300: #CBD5E1;
  --color-grey-400: #94A3B8;
  --color-grey-500: #64748B;
  --color-grey-600: #475569;
  --color-grey-700: #334155;
  --color-grey-800: #1E293B;
  --color-grey-900: #0F172A;

  /* ===== DARK MODE COLORS ===== */
  --color-dark-bg: #0A0E1A;
  --color-dark-surface: #151B2E;
  --color-dark-surface-elevated: #1F2937;
  --color-dark-border: #2D3748;

  /* ===== SEMANTIC COLORS ===== */
  --color-background: var(--color-white);
  --color-surface: var(--color-grey-50);
  --color-text-primary: var(--color-grey-900);
  --color-text-secondary: var(--color-grey-600);
  --color-text-tertiary: var(--color-grey-500);
  --color-border: var(--color-grey-200);
  --color-divider: var(--color-grey-100);

  /* ===== TYPOGRAPHY ===== */

  /* Font Families */
  --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
  --font-secondary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', 'Courier New', monospace;

  /* Font Sizes - Fluid Typography */
  --font-size-xs: clamp(0.75rem, 0.7rem + 0.25vw, 0.875rem);
  /* 12-14px */
  --font-size-sm: clamp(0.875rem, 0.8rem + 0.3vw, 1rem);
  /* 14-16px */
  --font-size-base: clamp(1rem, 0.95rem + 0.25vw, 1.125rem);
  /* 16-18px */
  --font-size-lg: clamp(1.125rem, 1.05rem + 0.35vw, 1.25rem);
  /* 18-20px */
  --font-size-xl: clamp(1.25rem, 1.15rem + 0.5vw, 1.5rem);
  /* 20-24px */
  --font-size-2xl: clamp(1.5rem, 1.35rem + 0.75vw, 1.875rem);
  /* 24-30px */
  --font-size-3xl: clamp(1.875rem, 1.65rem + 1.125vw, 2.25rem);
  /* 30-36px */
  --font-size-4xl: clamp(2.25rem, 1.95rem + 1.5vw, 3rem);
  /* 36-48px */
  --font-size-5xl: clamp(3rem, 2.5rem + 2.5vw, 3.75rem);
  /* 48-60px */
  --font-size-6xl: clamp(3.75rem, 3rem + 3.75vw, 4.5rem);
  /* 60-72px */

  /* Font Weights */
  --font-weight-light: 300;
  --font-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;
  --font-weight-extrabold: 800;
  --font-weight-black: 900;

  /* Line Heights */
  --line-height-tight: 1.2;
  --line-height-snug: 1.375;
  --line-height-normal: 1.5;
  --line-height-relaxed: 1.625;
  --line-height-loose: 2;

  /* Letter Spacing */
  --letter-spacing-tight: -0.025em;
  --letter-spacing-normal: 0;
  --letter-spacing-wide: 0.025em;
  --letter-spacing-wider: 0.05em;
  --letter-spacing-widest: 0.1em;

  /* ===== SPACING SYSTEM ===== */
  --spacing-0: 0;
  --spacing-px: 1px;
  --spacing-0-5: 0.125rem;
  /* 2px */
  --spacing-1: 0.25rem;
  /* 4px */
  --spacing-2: 0.5rem;
  /* 8px */
  --spacing-3: 0.75rem;
  /* 12px */
  --spacing-4: 1rem;
  /* 16px */
  --spacing-5: 1.25rem;
  /* 20px */
  --spacing-6: 1.5rem;
  /* 24px */
  --spacing-7: 1.75rem;
  /* 28px */
  --spacing-8: 2rem;
  /* 32px */
  --spacing-10: 2.5rem;
  /* 40px */
  --spacing-12: 3rem;
  /* 48px */
  --spacing-16: 4rem;
  /* 64px */
  --spacing-20: 5rem;
  /* 80px */
  --spacing-24: 6rem;
  /* 96px */
  --spacing-32: 8rem;
  /* 128px */
  --spacing-40: 10rem;
  /* 160px */
  --spacing-48: 12rem;
  /* 192px */

  /* Legacy spacing (for compatibility) */
  --spacing-xs: var(--spacing-1);
  --spacing-sm: var(--spacing-2);
  --spacing-md: var(--spacing-4);
  --spacing-lg: var(--spacing-6);
  --spacing-xl: var(--spacing-8);
  --spacing-2xl: var(--spacing-12);
  --spacing-3xl: var(--spacing-16);
  --spacing-4xl: var(--spacing-24);
  --spacing-5xl: var(--spacing-32);

  /* ===== LAYOUT ===== */
  --container-max-width: 1280px;
  --container-max-width-narrow: 960px;
  --container-max-width-wide: 1536px;
  --container-padding: clamp(1rem, 5vw, 2rem);
  --header-height: 80px;
  --header-height-mobile: 70px;

  /* ===== BORDERS ===== */
  --border-width-0: 0;
  --border-width-1: 1px;
  --border-width-2: 2px;
  --border-width-4: 4px;
  --border-width-8: 8px;

  /* Legacy */
  --border-width-thin: var(--border-width-1);
  --border-width-medium: var(--border-width-2);
  --border-width-thick: var(--border-width-4);

  /* Border Radius */
  --radius-none: 0;
  --radius-sm: 0.25rem;
  /* 4px */
  --radius-md: 0.5rem;
  /* 8px */
  --radius-lg: 0.75rem;
  /* 12px */
  --radius-xl: 1rem;
  /* 16px */
  --radius-2xl: 1.5rem;
  /* 24px */
  --radius-3xl: 2rem;
  /* 32px */
  --radius-full: 9999px;

  /* ===== SHADOWS - Premium Depth ===== */
  --shadow-xs: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-sm: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px -1px rgba(0, 0, 0, 0.1);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -2px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.1);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.1);
  --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
  --shadow-inner: inset 0 2px 4px 0 rgba(0, 0, 0, 0.05);

  /* Colored Shadows for CTAs */
  --shadow-primary: 0 4px 12px rgba(0, 102, 255, 0.3);
  --shadow-primary-lg: 0 8px 20px rgba(0, 102, 255, 0.4);
  --shadow-accent: 0 4px 12px rgba(16, 185, 129, 0.3);

  /* ===== TRANSITIONS & ANIMATIONS ===== */
  --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);

  /* Easing Functions */
  --ease-in: cubic-bezier(0.4, 0, 1, 1);
  --ease-out: cubic-bezier(0, 0, 0.2, 1);
  --ease-in-out: cubic-bezier(0.4, 0, 0.2, 1);
  --ease-bounce: cubic-bezier(0.68, -0.55, 0.265, 1.55);

  /* ===== Z-INDEX SYSTEM ===== */
  --z-base: 0;
  --z-dropdown: 1000;
  --z-sticky: 1020;
  --z-fixed: 1030;
  --z-modal-backdrop: 1040;
  --z-modal: 1050;
  --z-popover: 1060;
  --z-tooltip: 1070;
  --z-notification: 1080;

  /* ===== BREAKPOINTS (for reference in JS) ===== */
  --breakpoint-sm: 640px;
  --breakpoint-md: 768px;
  --breakpoint-lg: 1024px;
  --breakpoint-xl: 1280px;
  --breakpoint-2xl: 1536px;

  /* ===== GRADIENTS ===== */
  --gradient-primary: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
  --gradient-accent: linear-gradient(135deg, var(--color-accent) 0%, var(--color-accent-dark) 100%);
  --gradient-dark: linear-gradient(135deg, #0A0E1A 0%, #151B2E 100%);
  --gradient-light: linear-gradient(135deg, #F8FAFC 0%, #FFFFFF 100%);

  /* ===== BACKDROP BLUR ===== */
  --blur-sm: 4px;
  --blur-md: 8px;
  --blur-lg: 16px;
  --blur-xl: 24px;
}

/* ===== DARK MODE OVERRIDES ===== */
[data-theme="dark"] {
  --color-background: var(--color-dark-bg);
  --color-surface: var(--color-dark-surface);
  --color-text-primary: var(--color-grey-50);
  --color-text-secondary: var(--color-grey-300);
  --color-text-tertiary: var(--color-grey-400);
  --color-border: var(--color-dark-border);
  --color-divider: var(--color-dark-surface-elevated);

  /* Adjust shadows for dark mode */
  --shadow-sm: 0 1px 3px 0 rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.5);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.6);
}