/* GLOBAL SETTINGS */
:root {
    --primary-color: #463C3C; /* Original iWeb Dark Brown/Grey */
    --text-color: #666;
    --accent-color: #eee;
    --hover-bg: #f9f9f9;
    --nav-height: 80px;
}

* {
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.7;
    color: var(--text-color);
    background-color: #fff;
    margin: 0;
    padding-top: var(--nav-height); /* Space for the fixed navbar */
}

/* NAVIGATION BAR */
.main-nav {
    position: fixed;
    top: 0;
    width: 100%;
    height: var(--nav-height);
    background: #ffffff;
    border-bottom: 1px solid var(--accent-color);
    z-index: 1000;
}

.nav-container {
    max-width: 800px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 100%;
    padding: 0 20px;
}

.nav-logo {
    font-weight: bold;
    letter-spacing: 2px;
    color: var(--primary-color);
    text-transform: uppercase;
    font-size: 1.2rem;
}

.nav-links {
    list-style: none;
    display: flex;
    gap: 25px;
    margin: 0;
    padding: 0;
}

.nav-links a {
    text-decoration: none;
    color: var(--text-color);
    font-size: 0.95rem;
    font-weight: 500;
    transition: 0.2s ease;
}

.nav-links a:hover {
    color: var(--primary-color);
}

/* PAGE LAYOUT */
.container {
    max-width: 800px;
    margin: 0 auto;
    padding: 40px 20px;
}

header {
    margin-bottom: 40px;
}

h1 {
    color: var(--primary-color);
    font-size: 2.2rem;
    margin: 0;
    line-height: 1.2;
}

h2 {
    color: var(--primary-color);
    font-size: 1.5rem;
    margin-top: 30px;
}

/* CARDS & LIST ITEMS (For Projects & Publications) */
.item-card {
    padding: 20px;
    margin-bottom: 25px;
    background-color: transparent;
    border-left: 4px solid var(--accent-color);
    transition