/* style.css */
:root {
    --primary-color: #0056b3;
    --secondary-color: #f4f7f6;
    --text-color: #333;
    --border-color: #ddd;
    --bg-color: #f9f9f9;
    --content-bg: white;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    margin: 0;
    line-height: 1.8;
    color: var(--text-color);
    background-color: var(--bg-color);
    transition: background-color 0.3s, color 0.3s;
}

/* 1. Navigation Styling */
nav {
    background-color: #2c3e50;
    color: white;
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}

nav .links a {
    color: white;
    margin-right: 20px;
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s;
    padding-bottom: 2px;
}

nav .links a:hover {
    color: #3498db;
}

/* Active Nav Link */
nav .links a.active {
    color: #3498db;
    border-bottom: 2px solid #3498db;
}

.nav-right {
    display: flex;
    align-items: center;
    gap: 10px;
}

/* 2. Search and Toggle Styling */
#searchBox {
    padding: 8px 12px;
    border-radius: 4px;
    border: 1px solid #ccc;
    width: 200px;
}

#themeToggle {
    padding: 8px 12px;
    cursor: pointer;
    background-color: #34495e;
    color: white;
    border: none;
    border-radius: 4px;
}

/* 3. Content Area Styling */
#content {
    max-width: 800px;
    margin: 3rem auto;
    padding: 2rem;
    background: var(--content-bg);
    border-radius: 8px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.05);
    transition: background-color 0.3s;
}

/* 4. Typography and Elements */
h1, h2, h3 {
    color: var(--primary-color);
}

table {
    width: 100%;
    border-collapse: collapse;
    margin: 1rem 0;
}

table, th, td {
    border: 1px solid var(--border-color);
}

th, td {
    padding: 12px;
    text-align: left;
}

th {
    background-color: var(--secondary-color);
}

blockquote {
    border-left: 5px solid var(--primary-color);
    margin: 1.5rem 0;
    padding: 0.5rem 1rem;
    background-color: var(--secondary-color);
}

/* 5. Form and Search Results Styling */
.action-btn {
    padding: 8px 16px;
    cursor: pointer;
    background-color: var(--primary-color);
    color: white;
    border: none;
    border-radius: 4px;
    transition: background-color 0.3s;
}

.action-btn:hover {
    background-color: #004494;
}

/* Login Form Styling */
.login-container {
    max-width: 400px;
    margin: 2rem auto;
    padding: 2rem;
    background: var(--content-bg);
    border-radius: 8px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.1);
    text-align: center;
}

.login-container input {
    display: block;
    width: 100%;
    margin-bottom: 1rem;
    padding: 10px;
    box-sizing: border-box;
    border: 1px solid var(--border-color);
    border-radius: 4px;
}

/* Logoff Button */
#logoffBtn {
    background-color: #c0392b;
    color: white;
    border: none;
    padding: 8px 12px;
    border-radius: 4px;
    cursor: pointer;
}

/* Search Results */
.search-result {
    border-bottom: 1px solid var(--border-color);
    padding: 15px 0;
}

.search-result a {
    text-decoration: none;
    color: var(--primary-color);
    font-weight: bold;
    font-size: 1.2rem;
}

mark {
    background-color: #fff3cd;
    color: #856404;
    padding: 0 2px;
    border-radius: 2px;
}

/* --- DARK MODE THEME --- */
body.dark-mode {
    --bg-color: #1a1a1a;
    --content-bg: #2c2c2c;
    --text-color: #e0e0e0;
    --border-color: #555;
    --secondary-color: #333;
}

body.dark-mode nav {
    background-color: #111;
}

body.dark-mode #content {
    box-shadow: 0 4px 15px rgba(0,0,0,0.3);
}

body.dark-mode h1,
body.dark-mode h2,
body.dark-mode h3 {
    color: #3498db;
}

body.dark-mode .search-result a {
    color: #3498db;
}

body.dark-mode mark {
    background-color: #6a5a00;
    color: #ffda6a;
}