/* ========== GLOBAL STYLES ========== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: #f0f2f5;
    color: #333;
    line-height: 1.6;
}

/* ========== CONTAINER ========== */
.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 20px;
}

/* ========== HEADER ========== */
header {
    background-color: #5d2e1a;
    color: white;
    padding: 30px 20px;
    text-align: center;
}

header h1 {
    font-size: 28px;
    margin-bottom: 10px;
}

/* ========== NAVIGATION ========== */
nav {
    background-color: #7a3b22;
    padding: 12px 0;
    text-align: center;
}

nav a {
    color: white;
    text-decoration: none;
    padding: 12px 20px;
    display: inline-block;
}

nav a:hover {
    background-color: #c97e5a;
    color: #5d2e1a;
    text-decoration: underline;
}

/* ========== MAIN CONTENT ========== */
main {
    background: white;
    padding: 30px;
    margin: 20px auto;
    border-radius: 8px;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}

/* ========== HEADINGS ========== */
h1, h2, h3 {
    color: #5d2e1a;
    margin-bottom: 15px;
    margin-top: 20px;
}

h1 {
    font-size: 28px;
    border-left: 4px solid #c97e5a;
    padding-left: 15px;
}

h2 {
    border-bottom: 2px solid #ddd;
    padding-bottom: 8px;
}

h3 {
    margin-top: 20px;
}

/* ========== TEXT FORMATTING ========== */
p {
    margin-bottom: 15px;
}

.indent {
    text-indent: 40px;
}

.italic {
    font-style: italic;
}

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

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

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

.highlight {
    font-weight: bold;
    color: #c97e5a;
}

/* ========== LISTS ========== */
ul, ol {
    margin: 15px 0 15px 40px;
}

li {
    margin: 5px 0;
}

/* ========== IMAGES ========== */
img {
    max-width: 100%;
    height: auto;
    display: block;
    margin: 20px auto;
    border: 2px solid #ddd;
    border-radius: 8px;
    padding: 5px;
    opacity: 0.92;
}

img:hover {
    opacity: 1;
}

/* ========== THUMBNAILS ========== */
.thumbnail {
    width: 100px;
    height: 80px;
    object-fit: cover;
    display: inline-block;
    margin: 5px;
    border: 1px solid #ccc;
}

.thumbnail:hover {
    transform: scale(1.05);
    border-color: #c97e5a;
}

/* ========== TABLES ========== */
table {
    width: 100%;
    border-collapse: collapse;
    margin: 20px 0;
}

th, td {
    border: 1px solid #ddd;
    padding: 10px;
    text-align: left;
    vertical-align: top;
}

th {
    background-color: #e8e0d8;
    font-weight: bold;
    color: #5d2e1a;
}

caption {
    font-weight: bold;
    margin-bottom: 10px;
    background-color: #5d2e1a;
    color: white;
    padding: 8px;
    border-radius: 4px 4px 0 0;
}

/* ========== CARD / BOX ========== */
.card {
    background-color: #f9f5f0;
    border-left: 4px solid #c97e5a;
    padding: 15px;
    margin: 20px 0;
    border-radius: 0 8px 8px 0;
}

/* ========== BUTTON ========== */
.btn-top {
    display: inline-block;
    background-color: #5d2e1a;
    color: white;
    padding: 8px 16px;
    text-decoration: none;
    border-radius: 4px;
    margin-top: 20px;
}

.btn-top:hover {
    background-color: #c97e5a;
    color: #5d2e1a;
    text-decoration: none;
}

/* ========== REFERENCE LIST ========== */
.ref-list {
    list-style-type: none;
    margin-left: 0;
}

.ref-list li {
    margin-bottom: 15px;
    border-left: 3px solid #c97e5a;
    padding-left: 15px;
}

/* ========== FOOTER ========== */
footer {
    background-color: #5d2e1a;
    color: white;
    text-align: center;
    padding: 20px;
    margin-top: 20px;
}

footer a {
    color: #c97e5a;
    text-decoration: none;
}

footer a:hover {
    text-decoration: underline;
    color: white;
}

/* ========== RESPONSIVE DESIGN ========== */
@media (max-width: 768px) {
    .container {
        padding: 15px;
    }
    
    main {
        padding: 20px;
    }
    
    nav a {
        padding: 10px 12px;
        font-size: 14px;
    }
    
    h1 {
        font-size: 22px;
    }
    
    ul, ol {
        margin-left: 25px;
    }
    
    .thumbnail {
        width: 70px;
        height: 55px;
    }
}