:root {
    --primary-color: #2c3e50;
    --secondary-color: #3498db;
    --accent-color: #e74c3c;
    --light-color: #ecf0f1;
    --dark-color: #2c3e50;
    --success-color: #27ae60;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

body {
    line-height: 1.6;
    color: #333;
    background-color: #f5f5f5;
}

header {
    background-color: var(--primary-color);
    color: white;
    padding: 1.5rem;
    text-align: center;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
    
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1rem;
}

.search-container {
    margin: 1.5rem 0;
    position: relative;
}

#search-input {
    width: 100%;
    padding: 0.8rem 1rem;
    border: 2px solid #ddd;
    border-radius: 4px;
    font-size: 1rem;
    transition: all 0.3s;
}

#search-input:focus {
    border-color: var(--secondary-color);
    outline: none;
    box-shadow: 0 0 5px rgba(52, 152, 219, 0.5);
}

.search-btn {
    position: absolute;
    right: 0;
    top: 0;
    height: 100%;
    padding: 0 1rem;
    background-color: var(--secondary-color);
    color: white;
    border: none;
    border-radius: 0 4px 4px 0;
    cursor: pointer;
    transition: background-color 0.3s;
}

.search-btn:hover {
    background-color: #2980b9;
}

.card {
    background-color: white;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    margin-bottom: 1.5rem;
    overflow: hidden;
    transition: transform 0.3s;
}

.card:hover {
    transform: translateY(-5px);
}

.card-header {
    background-color: var(--primary-color);
    color: white;
    padding: 1rem;
    font-size: 1.2rem;
    cursor: pointer;
}

.card-body {
    padding: 1.5rem;
    display: none;
}

.card.active .card-body {
    display: block;
}

h2, h3, h4 {
    color: var(--primary-color);
    margin: 1.5rem 0 1rem;
}

p {
    margin-bottom: 1rem;
}

ul, ol {
    margin-bottom: 1rem;
    padding-left: 2rem;
}

li {
    margin-bottom: 0.5rem;
}

.command {
    background-color: #f8f9fa;
    border-left: 4px solid var(--secondary-color);
    padding: 0.8rem 1rem;
    margin: 1rem 0;
    font-family: monospace;
    color: #333;
}

.note {
    background-color: #fff8e1;
    border-left: 4px solid #ffc107;
    padding: 0.8rem 1rem;
    margin: 1rem 0;
}

.warning {
    background-color: #ffebee;
    border-left: 4px solid var(--accent-color);
    padding: 0.8rem 1rem;
    margin: 1rem 0;
}

.success {
    background-color: #e8f5e9;
    border-left: 4px solid var(--success-color);
    padding: 0.8rem 1rem;
    margin: 1rem 0;
}

table {
    width: 100%;
    border-collapse: collapse;
    margin: 1.5rem 0;
}

th, td {
    padding: 0.75rem;
    text-align: left;
    border-bottom: 1px solid #ddd;
}

th {
    background-color: var(--primary-color);
    color: white;
}

tr:nth-child(even) {
    background-color: #f2f2f2;
}

.contact-info {
    background-color: var(--light-color);
    padding: 1rem;
    border-radius: 4px;
    margin: 1rem 0;
}

footer {
    background-color: var(--dark-color);
    color: white;
    text-align: center;
    padding: 1.5rem;
    margin-top: 2rem;
}

@media (max-width: 768px) {
    .container {
        padding: 0.5rem;
    }
    
    .card-header {
        padding: 0.8rem;
        font-size: 1rem;
    }
    
    .card-body {
        padding: 1rem;
    }
}

header {
    position: sticky;
    top: 0;
    z-index: 1000; /* Higher than other elements */
    /* Your existing header styles remain */
}

.search-container {
    position: sticky;
    top: 100px; /* Header height (1.5rem padding-top + 1.5rem padding-bottom + line-height) */
    background-color: #f5f5f5; /* Match body background */
    z-index: 999;
    /* Your existing container styles remain */
    padding-bottom: 0.5rem; /* Reduce bottom padding when sticky */
}

/* Optional: Add shadow when scrolling past */
.sticky-shadow {
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

/* Adjust for mobile */
@media (max-width: 768px) {
    .container {
        top: 68px; /* Smaller header height on mobile */
    }
}