/**
 * Design System Variables
 * QuickMessage - Premium Marketing Website
 * Deep Navy + WhatsApp Green + Electric Blue
 */

:root {
    /* ========================================
       COLOR PALETTE
       ======================================== */

    /* Primary - Deep Navy */
    --color-navy: #0A0F2E;
    --color-navy-light: #141B3D;
    --color-navy-lighter: #1E2750;

    /* Accent - WhatsApp Green */
    --color-green: #25D366;
    --color-green-dark: #1DA851;
    --color-green-light: #34E879;
    --color-green-glow: rgba(37, 211, 102, 0.3);

    /* Secondary - Electric Blue */
    --color-blue: #3B82F6;
    --color-blue-dark: #2563EB;
    --color-blue-light: #60A5FA;

    /* Channel Colors */
    --color-whatsapp: #25D366;
    --color-sms: #3B82F6;
    --color-ivr: #8B5CF6;

    /* Neutral Colors */
    --color-white: #FFFFFF;
    --color-black: #000000;

    /* Gray Scale */
    --color-gray-50: #F9FAFB;
    --color-gray-100: #fff;
    --color-gray-200: #E5E7EB;
    --color-gray-300: #D1D5DB;
    --color-gray-400: #9CA3AF;
    --color-gray-500: #6B7280;
    --color-gray-600: #4B5563;
    --color-gray-700: #374151;
    --color-gray-800: #1F2937;
    --color-gray-900: #111827;

    /* Semantic Colors */
    --color-success: #22C55E;
    --color-warning: #F59E0B;
    --color-error: #EF4444;

    /* Gradients */
    --gradient-navy: linear-gradient(135deg, var(--color-navy) 0%, var(--color-navy-light) 50%, #0f3443 100%);
    --gradient-green: linear-gradient(135deg, var(--color-green) 0%, var(--color-green-dark) 100%);
    --gradient-glow: radial-gradient(ellipse at center, rgba(37, 211, 102, 0.15) 0%, transparent 70%);
    --gradient-text: linear-gradient(135deg, var(--color-green) 0%, var(--color-green-dark) 100%);

    /* Glass Effects */
    --glass-bg: rgba(255, 255, 255, 0.05);
    --glass-bg-light: rgba(255, 255, 255, 0.08);
    --glass-border: rgba(255, 255, 255, 0.1);
    --glass-blur: blur(20px);

    /* 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);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
    --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    --shadow-glow: 0 0 60px rgba(37, 211, 102, 0.3);
    --shadow-green: 0 10px 40px -10px rgba(37, 211, 102, 0.4);
    --shadow-card: 0 25px 50px -12px rgba(0, 0, 0, 0.5);

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

    /* Font Families - Open Sans + Poppins (Clean modern look) */
    --font-body: 'Open Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-display: 'Poppins', 'Open Sans', sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', Consolas, monospace;

    /* Font Sizes */
    --text-xs: 0.75rem;
    --text-sm: 0.875rem;
    --text-base: 1rem;
    --text-lg: 1.125rem;
    --text-xl: 1.25rem;
    --text-2xl: 1.5rem;
    --text-3xl: 1.875rem;
    --text-4xl: 2.25rem;
    --text-5xl: 3rem;
    --text-6xl: 3.75rem;
    --text-7xl: 4.5rem;

    /* Font Weights */
    --font-normal: 400;
    --font-medium: 500;
    --font-semibold: 600;
    --font-bold: 700;
    --font-extrabold: 800;

    /* Line Heights */
    --leading-none: 1;
    --leading-tight: 1.1;
    --leading-snug: 1.25;
    --leading-normal: 1.5;
    --leading-relaxed: 1.625;

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

    /* ========================================
       SPACING
       ======================================== */

    --space-1: 0.25rem;
    --space-2: 0.5rem;
    --space-3: 0.75rem;
    --space-4: 1rem;
    --space-5: 1.25rem;
    --space-6: 1.5rem;
    --space-8: 2rem;
    --space-10: 2.5rem;
    --space-12: 3rem;
    --space-16: 4rem;
    --space-20: 5rem;
    --space-24: 6rem;
    --space-32: 8rem;

    /* ========================================
       LAYOUT
       ======================================== */

    --container-sm: 640px;
    --container-md: 768px;
    --container-lg: 1024px;
    --container-xl: 1280px;
    --container-2xl: 1400px;

    --nav-height: 80px;
    --section-py: 5rem;
    --section-py-lg: 6rem;

    /* ========================================
       BORDERS & RADIUS
       ======================================== */

    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 0.50rem;
    --radius-2xl: 1.5rem;
    --radius-3xl: 2rem;
    --radius-full: 9999px;

    /* ========================================
       TRANSITIONS
       ======================================== */

    --transition-fast: 150ms ease;
    --transition-base: 200ms ease;
    --transition-slow: 300ms ease;
    --transition-slower: 500ms ease;

    /* ========================================
       Z-INDEX
       ======================================== */

    --z-base: 1;
    --z-dropdown: 100;
    --z-sticky: 200;
    --z-fixed: 300;
    --z-overlay: 400;
    --z-modal: 500;
}