/* ============================================
   BOSTAN GROUP - Design System Variables
   Premium Corporate Website
   ============================================ */

:root {
   /* ==========================================
     COLOR PALETTE
     Natural greens, whites, soft earth tones
     ========================================== */

   /* Primary - Nature Greens */
   --color-primary-900: #1a3518;
   --color-primary-800: #234825;
   --color-primary-700: #2d5a27;
   --color-primary-600: #3a7233;
   --color-primary-500: #4a7c40;
   --color-primary-400: #5f9654;
   --color-primary-300: #7db070;
   --color-primary-200: #a5cea0;
   --color-primary-100: #d4e8d2;
   --color-primary-50: #f0f7ef;

   /* Secondary - Earth Tones */
   --color-earth-900: #3d2e1e;
   --color-earth-800: #5c4530;
   --color-earth-700: #6b5240;
   --color-earth-600: #8b7355;
   --color-earth-500: #a08b70;
   --color-earth-400: #b5a28a;
   --color-earth-300: #cab9a4;
   --color-earth-200: #d4c5b5;
   --color-earth-100: #e8e0d5;
   --color-earth-50: #f7f4f0;

   /* Neutral - Pure & Clean */
   --color-white: #ffffff;
   --color-black: #0a0a0a;
   --color-gray-900: #171717;
   --color-gray-800: #262626;
   --color-gray-700: #404040;
   --color-gray-600: #525252;
   --color-gray-500: #737373;
   --color-gray-400: #a3a3a3;
   --color-gray-300: #d4d4d4;
   --color-gray-200: #e5e5e5;
   --color-gray-100: #f5f5f5;
   --color-gray-50: #fafafa;

   /* Accent Colors */
   --color-gold: #c9a962;
   --color-gold-light: #e5d4a1;

   /* Semantic Colors */
   --color-success: #22c55e;
   --color-warning: #f59e0b;
   --color-error: #ef4444;

   /* ==========================================
     GRADIENTS
     ========================================== */
   --gradient-hero: linear-gradient(135deg, rgba(26, 53, 24, 0.6) 0%, rgba(45, 90, 39, 0.5) 50%, rgba(74, 124, 64, 0.4) 100%);
   --gradient-overlay: linear-gradient(180deg, rgba(0, 0, 0, 0.4) 0%, rgba(0, 0, 0, 0.6) 100%);
   --gradient-card: linear-gradient(180deg, transparent 0%, rgba(26, 53, 24, 0.95) 100%);
   --gradient-premium: linear-gradient(135deg, var(--color-primary-700) 0%, var(--color-primary-500) 100%);
   --gradient-earth: linear-gradient(135deg, var(--color-earth-600) 0%, var(--color-earth-400) 100%);
   --gradient-glass: linear-gradient(135deg, rgba(255, 255, 255, 0.1) 0%, rgba(255, 255, 255, 0.05) 100%);

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

   /* Font Families */
   --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
   --font-arabic: 'Cairo', 'Noto Sans Arabic', sans-serif;
   --font-display: 'Inter', sans-serif;

   /* Font Sizes - Fluid Typography */
   --text-xs: clamp(0.75rem, 0.7rem + 0.25vw, 0.875rem);
   --text-sm: clamp(0.875rem, 0.8rem + 0.375vw, 1rem);
   --text-base: clamp(1rem, 0.9rem + 0.5vw, 1.125rem);
   --text-lg: clamp(1.125rem, 1rem + 0.625vw, 1.25rem);
   --text-xl: clamp(1.25rem, 1.1rem + 0.75vw, 1.5rem);
   --text-2xl: clamp(1.5rem, 1.25rem + 1.25vw, 2rem);
   --text-3xl: clamp(1.875rem, 1.5rem + 1.875vw, 2.5rem);
   --text-4xl: clamp(2.25rem, 1.75rem + 2.5vw, 3rem);
   --text-5xl: clamp(3rem, 2rem + 5vw, 4.5rem);
   --text-6xl: clamp(3.75rem, 2.5rem + 6.25vw, 6rem);

   /* Font Weights */
   --font-light: 300;
   --font-regular: 400;
   --font-medium: 500;
   --font-semibold: 600;
   --font-bold: 700;

   /* Line Heights */
   --leading-none: 1;
   --leading-tight: 1.25;
   --leading-snug: 1.375;
   --leading-normal: 1.5;
   --leading-relaxed: 1.625;
   --leading-loose: 2;

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

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

   /* Section Padding */
   --section-padding-y: clamp(1.75rem, 3vw, 2.5rem);
   --section-padding-x: clamp(1rem, 5vw, 4rem);

   /* Container */
   --container-max: 1400px;
   --container-padding: var(--space-6);

   /* ==========================================
     BORDERS & RADIUS
     ========================================== */
   --radius-sm: 0.25rem;
   --radius-md: 0.5rem;
   --radius-lg: 0.75rem;
   --radius-xl: 1rem;
   --radius-2xl: 1.5rem;
   --radius-3xl: 2rem;
   --radius-full: 9999px;

   --border-thin: 1px;
   --border-medium: 2px;
   --border-thick: 4px;

   /* ==========================================
     SHADOWS
     Premium, subtle shadows
     ========================================== */
   --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
   --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-glow: 0 0 40px rgba(74, 124, 64, 0.3);
   --shadow-glow-strong: 0 0 60px rgba(74, 124, 64, 0.5);
   --shadow-inner: inset 0 2px 4px 0 rgba(0, 0, 0, 0.05);

   /* ==========================================
     TRANSITIONS & ANIMATIONS
     ========================================== */

   /* Durations */
   --duration-instant: 75ms;
   --duration-fast: 150ms;
   --duration-normal: 300ms;
   --duration-slow: 500ms;
   --duration-slower: 700ms;
   --duration-slowest: 1000ms;

   /* Easing Functions - Premium Feel */
   --ease-linear: linear;
   --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-smooth: cubic-bezier(0.25, 0.1, 0.25, 1);
   --ease-bounce: cubic-bezier(0.68, -0.55, 0.265, 1.55);
   --ease-elastic: cubic-bezier(0.68, -0.6, 0.32, 1.6);
   --ease-premium: cubic-bezier(0.22, 1, 0.36, 1);

   /* Standard Transitions */
   --transition-colors: color var(--duration-normal) var(--ease-smooth),
      background-color var(--duration-normal) var(--ease-smooth),
      border-color var(--duration-normal) var(--ease-smooth);
   --transition-transform: transform var(--duration-normal) var(--ease-premium);
   --transition-opacity: opacity var(--duration-normal) var(--ease-smooth);
   --transition-shadow: box-shadow var(--duration-normal) var(--ease-smooth);
   --transition-all: all var(--duration-normal) var(--ease-premium);

   /* ==========================================
     Z-INDEX SCALE
     ========================================== */
   --z-below: -1;
   --z-base: 0;
   --z-above: 1;
   --z-dropdown: 100;
   --z-sticky: 200;
   --z-fixed: 300;
   --z-overlay: 400;
   --z-modal: 500;
   --z-popover: 600;
   --z-tooltip: 700;
   --z-max: 9999;

   /* ==========================================
     GLASSMORPHISM
     ========================================== */
   --glass-bg: rgba(255, 255, 255, 0.1);
   --glass-bg-dark: rgba(0, 0, 0, 0.2);
   --glass-border: rgba(255, 255, 255, 0.2);
   --glass-blur: blur(20px);
   --glass-blur-strong: blur(40px);
}

/* ============================================
   DARK MODE VARIABLES (if needed)
   ============================================ */
[data-theme="dark"] {
   --color-bg: var(--color-gray-900);
   --color-surface: var(--color-gray-800);
   --color-text: var(--color-gray-100);
   --color-text-muted: var(--color-gray-400);
}

/* ============================================
   RTL SUPPORT VARIABLES
   ============================================ */
[dir="rtl"] {
   --font-primary: var(--font-arabic);
   --tracking-normal: 0.01em;
   --tracking-wide: 0.02em;
}