/* ===== CSS VARIABLES ===== */
:root {
    /* Colors */
    --primary: #FFD700;
    --primary-hover: #E6C200;
    --secondary: #EF4444;
    --background-light: #F3F4F6;
    --background-dark: #111827;
    --surface-light: #FFFFFF;
    --surface-dark: #1F2937;
    
    /* Text Colors */
    --text-dark: #000000;
    --text-light: #FFFFFF;
    --text-gray-300: #D1D5DB;
    --text-gray-400: #9CA3AF;
    --text-gray-500: #6B7280;
    --text-gray-600: #4B5563;
    --text-gray-700: #374151;
    --text-gray-800: #1F2937;
    --text-gray-900: #111827;
    
    /* Gradients */
    --primary-gradient: linear-gradient(135deg, #000000 0%, #1a1a1a 100%);
    --secondary-gradient: linear-gradient(135deg, #ffd700 0%, #ffed4e 100%);
    --accent-gradient: linear-gradient(135deg, #dc2626 0%, #ef4444 100%);
    --hero-gradient: linear-gradient(135deg, #000000 0%, #1a1a1a 100%);
    
    /* 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-soft: 0 10px 40px rgba(0, 0, 0, 0.3);
    --shadow-strong: 0 20px 60px rgba(0, 0, 0, 0.4);
    
    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    --spacing-3xl: 4rem;
    
    /* Border Radius */
    --radius-sm: 0.25rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-2xl: 1.5rem;
    --radius-full: 9999px;
    
    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-base: 0.3s ease;
    --transition-slow: 0.5s ease;
}

/* ===== RESET & BASE STYLES ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: var(--text-dark);
    background-color: var(--background-light);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ===== TYPOGRAPHY ===== */
h1, h2, h3, h4, h5, h6 {
    font-weight: 800;
    line-height: 1.2;
    color: var(--text-dark);
}

h1 { font-size: 3rem; }
h2 { font-size: 2.25rem; }
h3 { font-size: 1.875rem; }
h4 { font-size: 1.5rem; }
h5 { font-size: 1.25rem; }
h6 { font-size: 1rem; }

p {
    margin-bottom: 1rem;
}

a {
    text-decoration: none !important;
    color: inherit;
    transition: var(--transition-base);
}

a:hover {
    text-decoration: none !important;
}

/* ===== CONTAINER & GRID ===== */
.container {
    width: 100%;
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 1rem;
}

@media (min-width: 640px) {
    .container {
        padding: 0 1.5rem;
    }
}

@media (min-width: 1024px) {
    .container {
        padding: 0 2rem;
    }
}

/* ===== UTILITY CLASSES ===== */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.font-light { font-weight: 300; }
.font-normal { font-weight: 400; }
.font-medium { font-weight: 500; }
.font-semibold { font-weight: 600; }
.font-bold { font-weight: 700; }
.font-extrabold { font-weight: 800; }

/* ===== SCROLLBAR STYLING ===== */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--background-dark);
}

::-webkit-scrollbar-thumb {
    background: var(--text-gray-600);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--text-gray-500);
}

/* ===== DETAILS/SUMMARY RESET ===== */
details > summary {
    list-style: none;
    cursor: pointer;
}

details > summary::-webkit-details-marker {
    display: none;
}

/* ===== RESPONSIVE BREAKPOINTS ===== */
@media (max-width: 640px) {
    html { font-size: 14px; }
    h1 { font-size: 2rem; }
    h2 { font-size: 1.75rem; }
    h3 { font-size: 1.5rem; }
}

@media (min-width: 641px) and (max-width: 1024px) {
    html { font-size: 15px; }
}

@media (min-width: 1025px) {
    html { font-size: 16px; }
}