/* ========== Global Reset ========== */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    font-family: 'Arial', sans-serif;
}

/* ========== Light Mode Variables ========== */
:root {
    --bg-color: white;
    --text-color: black;
    --primary-color: #3498db;
    --nav-bg: #333;
    --nav-text: white;
    --card-bg: #f8f8f8;
    --footer-bg: #333;
}

/* ========== Layout ========== */
html, body {
    height: 100%;
    scroll-behavior: smooth;
    background-color: var(--bg-color);
    color: var(--text-color);
    transition: background 0.3s ease, color 0.3s ease;
    display: flex;
    flex-direction: column;
}

/* ========== Main Content Layout ========== */
main {
    flex: 1;
    padding: 40px 20px;
    max-width: 1200px;
    margin: auto;
    text-align: center;
}

/* ========== Typography ========== */
h1 {
    font-size: 2.5em;
    margin-bottom: 15px;
    font-weight: bold;
}

p {
    font-size: 1.2em;
    margin-bottom: 20px;
}