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

body {
    font-family: var(--font-family);
    color: var(--text-color);
    background-color: var(--background-color);
    line-height: 1.5;
}

/* Links */
a {
    color: var(--primary-color);
    text-decoration: none;
    transition: color var(--transition);
}

a:hover {
    color: var(--primary-dark);
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    margin-bottom: var(--spacing-4);
}

p {
    margin-bottom: var(--spacing-4);
}

/* Images */
img {
    max-width: 100%;
    height: auto;
}

/* Container */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-4);
}

/* Utilities */
.text-center { text-align: center; }
.hidden { display: none; }

/* Sections */
.section {
    padding: var(--spacing-8) 0;
}

.section-title {
    font-size: 2rem;
    margin-bottom: var(--spacing-6);
    text-align: center;
}

/* Basic Grid */
.grid {
    display: grid;
    gap: var(--spacing-4);
}

.grid-cols-2 { grid-template-columns: repeat(2, 1fr); }
.grid-cols-3 { grid-template-columns: repeat(3, 1fr); }
.grid-cols-4 { grid-template-columns: repeat(4, 1fr); }

/* Basic Flexbox */
.flex {
    display: flex;
}

.flex-col {
    flex-direction: column;
}

/* Basic Responsiveness */
@media (max-width: 768px) {
    .container {
        padding: 0 var(--spacing-2);
    }
    
    .grid-cols-2,
    .grid-cols-3,
    .grid-cols-4 {
        grid-template-columns: 1fr;
    }
}