/* Shared Styles for CIS 1990 Course Website */

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

body {
    font-family: 'Georgia', 'Times New Roman', serif;
    line-height: 1.6;
    color: #2c3e50;
    background-color: #f8f9fa;
    margin: 0;
    padding: 0;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0;
    background-color: white;
    width: 100%;
}

header {
    position: relative;
    background-color: #011f5b;
    color: white;
    padding: 60px 0;
    border-bottom: 4px solid #990000;
    background-image: url('images/banner.png');
    background-size: cover;
    background-position: center center;
    background-repeat: no-repeat;
    min-height: 300px;
}

header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(1, 31, 91, 0.7);
    z-index: 1;
}

.header-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 40px;
    position: relative;
    z-index: 2;
    box-sizing: border-box;
}

.course-number {
    font-size: 1.1em;
    font-weight: 600;
    margin-bottom: 8px;
    letter-spacing: 2px;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
}

h1 {
    font-size: 2.5em;
    margin-bottom: 20px;
    font-weight: 700;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
}

.instructor {
    font-size: 1em;
    margin-top: 15px;
    text-shadow: 1px 1px 3px rgba(0, 0, 0, 0.5);
}

.instructor p {
    margin-bottom: 5px;
}

.nav-link {
    margin-top: 15px;
}

.nav-link a {
    color: white;
    text-decoration: none;
    opacity: 0.9;
    text-shadow: 1px 1px 3px rgba(0, 0, 0, 0.5);
}

.nav-link a:hover {
    opacity: 1;
    text-decoration: underline;
}

.main-content {
    padding: 35px 40px;
    box-sizing: border-box;
}

section {
    margin-bottom: 35px;
}

h2 {
    color: #011f5b;
    font-size: 1.6em;
    margin-bottom: 15px;
    padding-bottom: 6px;
    border-bottom: 2px solid #011f5b;
    font-weight: 600;
    letter-spacing: 0.5px;
}

h3 {
    color: #2c3e50;
    font-size: 1.2em;
    margin-top: 15px;
    margin-bottom: 10px;
    font-weight: 600;
}

p {
    margin-bottom: 12px;
    text-align: left;
    font-size: 1.05em;
}

ul {
    margin-left: 30px;
    margin-bottom: 15px;
}

li {
    margin-bottom: 8px;
    font-size: 1.05em;
}