/* ============================================================================
   2. RESET & BASE STYLES
   ============================================================================ */

/* === CSS Reset === */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

*::before,
*::after {
    box-sizing: border-box;
}

:root {
    /* Modern Green Color Palette */
    --primary-green: #22c55e;
    --primary-green-dark: #16a34a;
    --primary-green-darker: #15803d;
    --primary-green-light: #4ade80;
    --primary-green-lighter: #86efac;
    --primary-green-pale: #dcfce7;

    --secondary-green: #059669;
    --secondary-green-dark: #047857;
    --secondary-green-light: #10b981;

    --accent-green: #34d399;
    --accent-orange: #f97316;
    --accent-blue: #3b82f6;

    /* Neutral Colors */
    --white: #ffffff;
    --gray-50: #f9fafb;
    --gray-100: #f3f4f6;
    --gray-200: #e5e7eb;
    --gray-300: #d1d5db;
    --gray-400: #9ca3af;
    --gray-500: #6b7280;
    --gray-600: #4b5563;
    --gray-700: #374151;
    --gray-800: #1f2937;
    --gray-900: #111827;

    /* Text Colors */
    --text-primary: var(--gray-900);
    --text-secondary: var(--gray-600);
    --text-muted: var(--gray-500);
    --text-light: var(--gray-400);
    --text-white: var(--white);

    /* Background Colors */
    --bg-primary: var(--white);
    --bg-secondary: var(--gray-50);
    --bg-tertiary: var(--gray-100);
    --bg-dark: var(--gray-900);

    /* 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 -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    --shadow-green: 0 10px 15px -3px rgba(34, 197, 94, 0.2), 0 4px 6px -2px rgba(34, 197, 94, 0.1);

    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-2xl: 1.5rem;
    --radius-full: 9999px;

    /* Spacing */
    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    --space-2xl: 3rem;
    --space-3xl: 4rem;
    --space-4xl: 6rem;

    /* Typography */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-heading: 'Poppins', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;

    /* Fluid Typography - Scales smoothly across all viewports */
    --font-size-xs: clamp(0.75rem, 0.7rem + 0.25vw, 0.875rem);
    --font-size-sm: clamp(0.875rem, 0.8rem + 0.375vw, 1rem);
    --font-size-base: clamp(1rem, 0.9rem + 0.5vw, 1.125rem);
    --font-size-lg: clamp(1.125rem, 1rem + 0.625vw, 1.25rem);
    --font-size-xl: clamp(1.25rem, 1.1rem + 0.75vw, 1.5rem);
    --font-size-2xl: clamp(1.5rem, 1.3rem + 1vw, 2rem);
    --font-size-3xl: clamp(1.875rem, 1.5rem + 1.875vw, 2.5rem);
    --font-size-4xl: clamp(2.25rem, 1.75rem + 2.5vw, 3rem);
    --font-size-5xl: clamp(3rem, 2rem + 5vw, 4rem);
    --font-size-6xl: clamp(3.75rem, 2.5rem + 6.25vw, 5rem);

    /* Responsive Spacing - Scales with viewport */
    --space-fluid-xs: clamp(0.25rem, 0.2rem + 0.25vw, 0.5rem);
    --space-fluid-sm: clamp(0.5rem, 0.4rem + 0.5vw, 1rem);
    --space-fluid-md: clamp(1rem, 0.8rem + 1vw, 1.5rem);
    --space-fluid-lg: clamp(1.5rem, 1rem + 2.5vw, 2.5rem);
    --space-fluid-xl: clamp(2rem, 1.5rem + 2.5vw, 3rem);
    --space-fluid-2xl: clamp(3rem, 2rem + 5vw, 5rem);
    --space-fluid-3xl: clamp(4rem, 3rem + 5vw, 6rem);

    /* Transitions */
    --transition-fast: 150ms ease-in-out;
    --transition-normal: 250ms ease-in-out;
    --transition-slow: 350ms ease-in-out;

    /* Z-index */
    --z-dropdown: 1000;
    --z-sticky: 1020;
    --z-fixed: 1030;
    --z-modal: 1040;
    --z-popover: 1050;
    --z-tooltip: 1060;

    /* Responsive Breakpoints (for reference in JS) */
    --breakpoint-xs: 320px;
    --breakpoint-sm: 375px;
    --breakpoint-md: 768px;
    --breakpoint-lg: 1024px;
    --breakpoint-xl: 1440px;
    --breakpoint-2xl: 1920px;
}

/* Smooth scrolling */
html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-primary);
    font-size: 1rem;
    font-weight: 400;
    line-height: 1.7;
    color: var(--text-primary);
    background-color: var(--bg-primary);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 700;
    line-height: 1.2;
    color: var(--text-primary);
    margin-bottom: var(--space-md);
}

h1 {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 800;
    letter-spacing: -0.02em;
}

h2 {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 700;
    letter-spacing: -0.01em;
}

h3 {
    font-size: clamp(1.5rem, 3vw, 2.25rem);
    font-weight: 600;
}

h4 {
    font-size: clamp(1.25rem, 2.5vw, 1.875rem);
    font-weight: 600;
}

h5 {
    font-size: clamp(1.125rem, 2vw, 1.5rem);
    font-weight: 500;
}

h6 {
    font-size: clamp(1rem, 1.5vw, 1.25rem);
    font-weight: 500;
}

p {
    margin-bottom: var(--space-lg);
    color: var(--text-secondary);
    font-size: 1.0625rem;
    line-height: 1.72;
}

.lead {
    font-size: 1.1875rem;
    font-weight: 400;
    color: var(--text-secondary);
    line-height: 1.65;
}

.text-small {
    font-size: 0.875rem;
}

.text-xs {
    font-size: 0.75rem;
}

/* Container System */
.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 var(--space-lg);
    width: 100%;
}

/* Wide container for about page */
.about-section-modern .container {
    max-width: 1600px !important;
    padding: 0 2rem !important;
}

/* Wide container for business partner page */
.business-section-modern .container {
    max-width: 1600px !important;
    padding: 0 2rem !important;
}

.container-sm {
    max-width: 640px;
}

.container-md {
    max-width: 768px;
}

.container-lg {
    max-width: 1024px;
}

.container-xl {
    max-width: 1280px;
}

.container-2xl {
    max-width: 1536px;
}

@media (max-width: 768px) {
    .container {
        padding: 0 var(--space-md);
    }

    .about-section-modern .container {
        max-width: 100% !important;
        padding: 0 1rem !important;
    }
}

/* Utility Classes */

.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.text-primary { color: var(--primary-green); }
.text-secondary { color: var(--text-secondary); }
.text-muted { color: var(--text-muted); }
.text-white { color: var(--text-white); }

.bg-primary { background-color: var(--primary-green); }
.bg-secondary { background-color: var(--bg-secondary); }
.bg-white { background-color: var(--white); }
.bg-dark { background-color: var(--bg-dark); }

.rounded { border-radius: var(--radius-md); }
.rounded-lg { border-radius: var(--radius-lg); }
.rounded-xl { border-radius: var(--radius-xl); }
.rounded-2xl { border-radius: var(--radius-2xl); }
.rounded-full { border-radius: var(--radius-full); }

.shadow { box-shadow: var(--shadow-md); }
.shadow-lg { box-shadow: var(--shadow-lg); }
.shadow-xl { box-shadow: var(--shadow-xl); }
.shadow-green { box-shadow: var(--shadow-green); }

.transition { transition: all var(--transition-normal); }
.transition-fast { transition: all var(--transition-fast); }
.transition-slow { transition: all var(--transition-slow); }

/* Flexbox Utilities */
.flex { display: flex; }
.flex-col { flex-direction: column; }
.flex-wrap { flex-wrap: wrap; }
.items-center { align-items: center; }
.items-start { align-items: flex-start; }
.items-end { align-items: flex-end; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }
.justify-around { justify-content: space-around; }
.justify-start { justify-content: flex-start; }
.justify-end { justify-content: flex-end; }

/* Grid Utilities */
.grid { display: grid; }
.grid-cols-1 { grid-template-columns: repeat(1, minmax(0, 1fr)); }
.grid-cols-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid-cols-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid-cols-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.gap-4 { gap: var(--space-md); }
.gap-6 { gap: var(--space-lg); }
.gap-8 { gap: var(--space-xl); }

/* Spacing Utilities */
.m-0 { margin: 0; }
.mt-4 { margin-top: var(--space-md); }
.mb-4 { margin-bottom: var(--space-md); }
.my-8 { margin-top: var(--space-xl); margin-bottom: var(--space-xl); }
.p-4 { padding: var(--space-md); }
.py-8 { padding-top: var(--space-xl); padding-bottom: var(--space-xl); }
.px-6 { padding-left: var(--space-lg); padding-right: var(--space-lg); }