/* ===== CSS VARIABLES ===== */
:root {
    /* Colors */
    --ca-color-white: #fff;
    --ca-color-black: #000;
    --ca-color-accent: #cd353a;
    --ca-color-accent-hover: #b52d32;
    
    /* Neutral Colors */
    --ca-color-gray-50: #f9fafb;
    --ca-color-gray-100: #f3f4f6;
    --ca-color-gray-200: #e5e7eb;
    --ca-color-gray-300: #d1d5db;
    --ca-color-gray-400: #9ca3af;
    --ca-color-gray-500: #6b7280;
    --ca-color-gray-600: #4b5563;
    --ca-color-gray-700: #374151;
    --ca-color-gray-800: #1f2937;
    --ca-color-gray-900: #111827;
    
    /* Semantic Colors */
    --ca-color-background: #fcfcfc;
    --ca-color-surface: #fff;
    --ca-color-border: #e1e1e1;
    --ca-color-text-primary: #222;
    --ca-color-text-secondary: #666;
    --ca-color-text-muted: #9ca3af;
    
    /* Typography */
    --ca-font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
    --ca-font-weight-normal: 400;
    --ca-font-weight-medium: 500;
    --ca-font-weight-semibold: 600;
    --ca-font-weight-bold: 700;
    
    /* Spacing */
    --ca-spacing-xs: 0.25rem;
    --ca-spacing-sm: 0.5rem;
    --ca-spacing-md: 1rem;
    --ca-spacing-lg: 1.5rem;
    --ca-spacing-xl: 2rem;
    --ca-spacing-2xl: 3rem;
    --ca-spacing-3xl: 4rem;
    
    /* Border Radius */
    --ca-radius-sm: 0.375rem;
    --ca-radius-md: 0.5rem;
    --ca-radius-lg: 0.75rem;
    --ca-radius-xl: 1rem;
    --ca-radius-2xl: 1.5rem;
    
    /* Shadows */
    --ca-shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --ca-shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --ca-shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --ca-shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    
    /* Layout */
    --ca-container-max-width: 1214px;
    --ca-header-full-height: 200px;
    --ca-header-scrolled-height: 120px;
}

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

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    font-family: var(--ca-font-family);
    font-weight: var(--ca-font-weight-normal);
    color: var(--ca-color-text-primary);
    background: var(--ca-color-background);
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ===== TYPOGRAPHY ===== */
h1, h2, h3, h4, h5, h6 {
    font-weight: var(--ca-font-weight-bold);
    line-height: 1.2;
    margin-bottom: var(--ca-spacing-md);
}

h1 { font-size: 2.5rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.75rem; }
h4 { font-size: 1.5rem; }
h5 { font-size: 1.25rem; }
h6 { font-size: 1rem; }

p {
    margin-block-start: 1em;
    margin-block-end: 1em;
    margin-bottom: var(--ca-spacing-md);
}

/* ===== LINKS ===== */
a {
    color: var(--ca-color-black);
    text-decoration: none;
    transition: all 0.3s ease;
}

a:hover {
    color: var(--ca-color-accent);
}


/* ===== LAYOUT ===== */
.container {
    margin: 0 auto;
}

main {
    margin: 0 auto;
}

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

.font-normal { font-weight: var(--ca-font-weight-normal); }
.font-medium { font-weight: var(--ca-font-weight-medium); }
.font-semibold { font-weight: var(--ca-font-weight-semibold); }
.font-bold { font-weight: var(--ca-font-weight-bold); }

.bg-white { background-color: var(--ca-color-white); }
.bg-gray-50 { background-color: var(--ca-color-gray-50); }
.bg-gray-100 { background-color: var(--ca-color-gray-100); }

.text-primary { color: var(--ca-color-text-primary); }
.text-secondary { color: var(--ca-color-text-secondary); }
.text-muted { color: var(--ca-color-text-muted); }
.text-accent { color: var(--ca-color-accent); }

/* ===== ACCESSIBILITY ===== */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* ===== FOCUS STYLES ===== */
button:focus-visible,
a:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible {
    outline: 2px solid var(--ca-color-accent);
    outline-offset: 2px;
}