/* Base Styles - Variables, Reset, and Common Utilities */

:root {
    /* Colors - Light Mode */
    --color-primary: #2563eb;
    --color-primary-dark: #1e40af;
    --color-secondary: #7c3aed;
    --color-text-primary: #1d1d1f;
    --color-text-secondary: #6e6e73;
    --color-text-tertiary: #86868b;
    --color-background: #ffffff;
    --color-background-light: #f8fafc;
    --color-background-gray: #e2e8f0;
    --color-border: rgba(0, 0, 0, 0.04);
    --color-shadow: rgba(0, 0, 0, 0.06);

    /* Typography */
    --font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, system-ui, sans-serif;
    --font-size-xs: 0.7rem;
    --font-size-sm: 0.8rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.1rem;
    --font-size-xl: 1.2rem;
    --font-size-2xl: 1.4rem;
    --font-size-3xl: 1.6rem;
    --font-size-4xl: 2rem;
    --font-size-5xl: 3rem;
    --font-size-6xl: 4.5rem;
    --font-size-7xl: 5rem;
    --font-size-8xl: 6rem;

    --font-weight-normal: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;
    --font-weight-extrabold: 800;
    --font-weight-black: 900;

    --line-height-tight: 1.1;
    --line-height-normal: 1.4;
    --line-height-relaxed: 1.6;
    --line-height-loose: 1.7;

    --letter-spacing-tight: -0.02em;
    --letter-spacing-normal: -0.01em;
    --letter-spacing-wide: 0.01em;

    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 0.75rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 2.5rem;
    --spacing-3xl: 3rem;
    --spacing-4xl: 4rem;
    --spacing-5xl: 5rem;
    --spacing-6xl: 6rem;
    --spacing-8xl: 8rem;

    /* Border Radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --radius-2xl: 20px;
    --radius-3xl: 24px;

    /* Shadows */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.04);
    --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.08);
    --shadow-xl: 0 12px 40px rgba(0, 0, 0, 0.1);

    /* Layout */
    --container-max-width: 1400px;
    --section-padding: 8rem 3rem;
    --grid-gap: 2.5rem;
}


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

body {
    font-family: var(--font-family);
    line-height: var(--line-height-normal);
    color: var(--color-text-primary);
    background: var(--color-background);
    margin: 0;
    padding: 0;
    overflow-x: visible;
    width: 100%;
}

/* Common Utility Classes */
.container {
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 var(--spacing-3xl);
}

.section {
    padding: var(--section-padding);
}

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

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

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

/* Common Button Styles */
.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    border-radius: 10px;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.2s ease;
    cursor: pointer;
    border: none;
    font-size: var(--font-size-base);
}

.btn-outline {
    background: transparent;
    color: var(--color-text-primary);
    border: 2px solid var(--color-text-primary);
}

.btn-outline:hover {
    background: var(--color-text-primary);
    color: var(--color-background);
}

.btn-primary {
    background: var(--color-text-primary);
    color: var(--color-background);
}

.btn-primary:hover {
    background: var(--color-primary);
    transform: translateY(-1px);
}

.btn-large {
    padding: 1rem 2.5rem;
    font-size: 1rem;
    border-radius: 12px;
    font-weight: 700;
}

/* Common Grid Styles */
.grid {
    display: grid;
    gap: var(--grid-gap);
}

.grid-2 {
    grid-template-columns: repeat(2, 1fr);
}

.grid-3 {
    grid-template-columns: repeat(3, 1fr);
}

.grid-4 {
    grid-template-columns: repeat(4, 1fr);
}

.grid-auto {
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

/* Common Card Styles */
.card {
    background: var(--color-background);
    border-radius: var(--radius-lg);
    padding: var(--spacing-3xl);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--color-border);
}

/* Responsive Utilities */
@media (max-width: 1024px) {
    .container {
        padding: 0 var(--spacing-xl);
    }
    
    .grid-4 {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .grid-3 {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .container {
        padding: 0 var(--spacing-lg);
    }
    
    .grid-4,
    .grid-3,
    .grid-2 {
        grid-template-columns: 1fr;
    }
    
    .section {
        padding: var(--spacing-4xl) var(--spacing-lg);
    }
}

/* Logo and Icon Sizing Variables */
:root {
    --logo-xs: 24px;
    --logo-sm: 36px;
    --logo-md: 48px;
    --logo-lg: 60px;
    --logo-xl: 80px;
    --logo-2xl: 120px;
    --logo-3xl: 150px;
}

/* Standard Logo Sizing - Use width only, height auto */
.logo-xs {
    width: var(--logo-xs);
    object-fit: contain;
}

.logo-sm {
    width: var(--logo-sm);
    object-fit: contain;
}

.logo-md {
    width: var(--logo-md);
    object-fit: contain;
}

.logo-lg {
    width: var(--logo-lg);
    object-fit: contain;
}

.logo-xl {
    width: var(--logo-xl);
    object-fit: contain;
}

.logo-2xl {
    width: var(--logo-2xl);
    object-fit: contain;
}

.logo-3xl {
    width: var(--logo-3xl);
    object-fit: contain;
}

/* Responsive Logo Sizing */
@media (max-width: 768px) {
    :root {
        --logo-xs: 20px;
        --logo-sm: 28px;
        --logo-md: 36px;
        --logo-lg: 44px;
        --logo-xl: 56px;
        --logo-2xl: 80px;
        --logo-3xl: 100px;
    }
}

@media (min-width: 1024px) {
    :root {
        --logo-xs: 28px;
        --logo-sm: 40px;
        --logo-md: 56px;
        --logo-lg: 72px;
        --logo-xl: 96px;
        --logo-2xl: 120px;
        --logo-3xl: 150px;
    }
}