:root {
    /* Color Palette - Minimalist & OpenAI inspired */
    --bg-color: #ffffff;
    --bg-alt-color: #f7f7f8;
    --text-primary: #1a1a1a;
    --text-secondary: #6e6e73;
    --accent-color: #43534a;
    /* Desaturated green */
    --accent-soft: #f0f2f1;
    --border-color: #e5e5e5;

    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;

    /* Spacing - 8px Grid System */
    --space-1: 8px;
    --space-2: 16px;
    --space-3: 24px;
    --space-4: 32px;
    --space-5: 40px;
    --space-6: 48px;
    --space-8: 64px;
    --space-10: 80px;
    --space-12: 96px;

    /* Transitions */
    --ease-standard: cubic-bezier(0.4, 0, 0.2, 1);
    --ease-out-smooth: cubic-bezier(0, 0, 0.2, 1);
    --duration-standard: 500ms;
    --duration-slow: 900ms;
}

@media (prefers-reduced-motion: reduce) {

    *,
    ::before,
    ::after {
        animation-delay: -1ms !important;
        animation-duration: 1ms !important;
        animation-iteration-count: 1 !important;
        background-attachment: initial !important;
        scroll-behavior: auto !important;
        transition-duration: 0s !important;
        transition-delay: 0s !important;
    }
}

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

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    background-color: var(--bg-color);
    color: var(--text-primary);
    font-family: var(--font-family);
    line-height: 1.6;
    overflow-x: hidden;
}

h1,
h2,
h3,
h4 {
    font-weight: 600;
    line-height: 1.1;
    letter-spacing: -0.02em;
}

a {
    color: inherit;
    text-decoration: none;
    transition: opacity var(--duration-standard) var(--ease-standard);
}

a:hover {
    opacity: 0.7;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

/* Base Fade-in Animation Styles */
.reveal {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity var(--duration-slow) var(--ease-out-smooth), transform var(--duration-slow) var(--ease-out-smooth);
}

.reveal.visible {
    opacity: 1;
    transform: translateY(0);
}

.stagger-1 {
    transition-delay: 100ms;
}

.stagger-2 {
    transition-delay: 200ms;
}

.stagger-3 {
    transition-delay: 300ms;
}

/* Layout Utilities */
.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 var(--space-3);
}

.section-padding {
    padding: var(--space-12) 0;
}

@media (max-width: 768px) {
    .section-padding {
        padding: var(--space-8) 0;
    }

    .grid-2 {
        grid-template-columns: 1fr !important;
        gap: var(--space-4) !important;
    }

    .hero-content {
        text-align: center;
        margin-bottom: var(--space-6);
    }

    .hero-content p {
        margin: 0 auto var(--space-4) !important;
    }

    .nav-links {
        display: none !important;
        /* Simple mobile approach: hide for now or implement burger */
    }
}

/* Shared Components */
.card {
    background: var(--bg-alt-color);
    border-radius: 12px;
    overflow: hidden;
    transition: transform 0.3s var(--ease-standard), box-shadow 0.3s var(--ease-standard);
    border: 1px solid var(--border-color);
}

.card:hover {
    transform: scale(1.01);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
}

/* Layout helpers used in HTML */
.display-grid {
    display: grid;
}

.grid-2 {
    grid-template-columns: 1fr 1fr;
}

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

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

.mb-2 {
    margin-bottom: var(--space-2);
}

.mb-3 {
    margin-bottom: var(--space-3);
}

.mb-4 {
    margin-bottom: var(--space-4);
}

.mb-5 {
    margin-bottom: var(--space-5);
}

.mb-6 {
    margin-bottom: var(--space-6);
}

.mb-8 {
    margin-bottom: var(--space-8);
}