/* ============================================
   AIVAURA Website - Global Styles
   Typography, Colors, Base Elements
   ============================================ */

/* CSS Variables - Color Palette (Light Theme - Default) */
:root {
    --color-black: #000000;
    --color-grey-dark: #1a1a1a;
    --color-grey-medium: #4a4a4a;
    --color-grey-light: #8a8a8a;
    --color-grey-lighter: #e5e5e5;
    --color-white: #ffffff;
    --color-blue: #0066cc;
    --color-blue-light: #3399ff;
    --color-blue-dark: #004499;
    --color-green: #22c55e;
    --color-green-light: #4ade80;
    --color-green-dark: #16a34a;
    
    /* Semantic Colors */
    --color-bg-primary: #ffffff;
    --color-bg-secondary: #e5e5e5;
    --color-bg-tertiary: #f5f5f5;
    --color-text-primary: #000000;
    --color-text-secondary: #4a4a4a;
    --color-text-tertiary: #8a8a8a;
    --color-border: #e5e5e5;
    --color-card-bg: #ffffff;
    --color-header-bg: #ffffff;
    --color-footer-bg: #1a1a1a;
    --color-footer-text: #ffffff;
    --color-footer-text-secondary: #8a8a8a;
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 3rem;
    --spacing-xl: 4rem;
    
    /* Typography */
    --font-family-primary: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    --font-size-base: 16px;
    --font-size-sm: 14px;
    --font-size-lg: 18px;
    --font-size-xl: 24px;
    --font-size-2xl: 32px;
    --font-size-3xl: 48px;
    
    /* Border Radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    
    /* Shadows */
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 8px rgba(0, 0, 0, 0.15);
    --shadow-lg: 0 8px 16px rgba(0, 0, 0, 0.2);
}

/* Dark Theme - Automatically applied based on system preference */
@media (prefers-color-scheme: dark) {
    :root {
        --color-black: #000000;
        --color-grey-dark: #1a1a1a;
        --color-grey-medium: #a0a0a0;
        --color-grey-light: #6a6a6a;
        --color-grey-lighter: #2a2a2a;
        --color-white: #ffffff;
        --color-blue: #3399ff;
        --color-blue-light: #66b3ff;
        --color-blue-dark: #0066cc;
        --color-green: #4ade80;
        --color-green-light: #86efac;
        --color-green-dark: #22c55e;
        
        /* Semantic Colors - Dark Mode */
        --color-bg-primary: #121212;
        --color-bg-secondary: #1a1a1a;
        --color-bg-tertiary: #242424;
        --color-text-primary: #ffffff;
        --color-text-secondary: #a0a0a0;
        --color-text-tertiary: #6a6a6a;
        --color-border: #2a2a2a;
        --color-card-bg: #1a1a1a;
        --color-header-bg: #121212;
        --color-footer-bg: #0a0a0a;
        --color-footer-text: #ffffff;
        --color-footer-text-secondary: #6a6a6a;
        
        /* Shadows - Adjusted for dark mode */
        --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.3);
        --shadow-md: 0 4px 8px rgba(0, 0, 0, 0.4);
        --shadow-lg: 0 8px 16px rgba(0, 0, 0, 0.5);
    }
}

/* Reset & Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    font-size: var(--font-size-base);
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family-primary);
    color: var(--color-text-primary);
    background-color: var(--color-bg-primary);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    transition: background-color 0.3s ease, color 0.3s ease;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.2;
    margin-bottom: var(--spacing-sm);
    color: var(--color-text-primary);
    transition: color 0.3s ease;
}

h1 {
    font-size: var(--font-size-3xl);
}

h2 {
    font-size: var(--font-size-2xl);
}

h3 {
    font-size: var(--font-size-xl);
}

h4 {
    font-size: var(--font-size-lg);
}

p {
    margin-bottom: var(--spacing-sm);
    color: var(--color-text-secondary);
    transition: color 0.3s ease;
}

a {
    color: var(--color-blue);
    text-decoration: none;
    transition: color 0.3s ease;
}

a:hover {
    color: var(--color-blue-light);
}

@media (prefers-color-scheme: dark) {
    a:hover {
        color: var(--color-blue-light);
    }
}

/* Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* Utility Classes */
.text-center {
    text-align: center;
}

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

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

.mt-sm { margin-top: var(--spacing-sm); }
.mt-md { margin-top: var(--spacing-md); }
.mt-lg { margin-top: var(--spacing-lg); }
.mb-sm { margin-bottom: var(--spacing-sm); }
.mb-md { margin-bottom: var(--spacing-md); }
.mb-lg { margin-bottom: var(--spacing-lg); }

/* Section Spacing */
section {
    padding: var(--spacing-xl) 0;
}

.section-header {
    text-align: center;
    margin-bottom: var(--spacing-lg);
}

.section-title {
    font-size: var(--font-size-2xl);
    margin-bottom: var(--spacing-sm);
}

.section-subtitle {
    font-size: var(--font-size-lg);
    color: var(--color-text-secondary);
    max-width: 700px;
    margin: 0 auto;
    transition: color 0.3s ease;
}