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

body {
    font-family: 'Courier New', 'Monaco', 'Consolas', monospace;
    background: #0a0a0a;
    color: #00ff00;
    min-height: 100vh;
    padding: 20px;
    display: flex;
    flex-direction: column;
    align-items: center;
}

h1 {
    color: #00ff00;
    text-align: center;
    margin-bottom: 30px;
    font-size: 2rem;
}

/* Navigation Styles */
.main-nav {
    display: flex;
    gap: 20px;
    margin-bottom: 40px;
    flex-wrap: wrap;
    justify-content: center;
}

.main-nav a {
    color: #00ff00;
    text-decoration: none;
    padding: 10px 20px;
    border: 1px solid #00ff00;
    background: #0a0a0a;
    transition: all 0.3s;
}

.main-nav a:hover {
    background: #00ff00;
    color: #0a0a0a;
}

/* Section Styles */
.section {
    width: 100%;
    max-width: 1200px;
    margin-bottom: 60px;
}

.section-title {
    color: #00ff00;
    text-align: center;
    margin-bottom: 30px;
    font-size: 1.8rem;
    border-bottom: 2px solid #00ff00;
    padding-bottom: 15px;
}

.section-note {
    text-align: center;
    color: #00aa00;
    margin-bottom: 20px;
    font-style: italic;
}

.cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 30px;
    width: 100%;
}

.mp-card {
    background: #0a0a0a;
    border: 1px solid #00ff00;
    padding: 30px;
}

.mp-card h3 {
    color: #00ff00;
    margin-bottom: 15px;
    font-size: 1.3rem;
    border-bottom: 1px solid #00ff00;
    padding-bottom: 10px;
}

.mp-card .description {
    color: #00aa00;
    margin-bottom: 20px;
    font-size: 0.9rem;
    font-style: italic;
}

.input-group {
    margin-bottom: 15px;
}

.input-group label {
    display: block;
    margin-bottom: 5px;
    color: #00ff00;
    font-weight: normal;
    font-size: 1rem;
}

.input-group input {
    width: 100%;
    padding: 12px;
    background: #0a0a0a;
    border: 1px solid #00ff00;
    color: #00ff00;
    font-family: 'Courier New', 'Monaco', 'Consolas', monospace;
    font-size: 1rem;
}

.input-group input:focus {
    outline: 1px solid #00ff00;
}

.input-group input::placeholder {
    color: #00aa00;
}

.input-group input[type="number"] {
    appearance: textfield;
    -moz-appearance: textfield;
}

.input-group input[type="number"]::-webkit-outer-spin-button,
.input-group input[type="number"]::-webkit-inner-spin-button {
    -webkit-appearance: none;
    margin: 0;
}

button {
    width: 100%;
    padding: 12px 24px;
    background: #0a0a0a;
    color: #00ff00;
    border: 1px solid #00ff00;
    font-family: 'Courier New', 'Monaco', 'Consolas', monospace;
    font-size: 1rem;
    font-weight: normal;
    cursor: pointer;
    margin-top: 10px;
    transition: all 0.3s;
}

button:hover {
    background: #00ff00;
    color: #0a0a0a;
}

/* Multiple buttons in a card */
.mp-card button + button {
    margin-top: 10px;
}

.result {
    margin-top: 20px;
    padding: 15px;
    font-size: 1rem;
    min-height: 50px;
    display: none;
    font-family: 'Courier New', 'Monaco', 'Consolas', monospace;
}

.result.show {
    display: block;
    border: 1px solid #00ff00;
    color: #00ff00;
    background: #0a0a0a;
}

/* Reference Table Styles */
.reference-table-container {
    width: 100%;
    overflow-x: auto;
    margin-top: 30px;
}

.reference-table {
    width: 100%;
    border-collapse: collapse;
    border: 1px solid #00ff00;
}

.reference-table thead {
    background: #0a0a0a;
}

.reference-table th {
    color: #00ff00;
    border: 1px solid #00ff00;
    padding: 15px;
    text-align: left;
    font-size: 1rem;
}

.reference-table td {
    color: #00ff00;
    border: 1px solid #00ff00;
    padding: 12px;
    font-size: 0.9rem;
}

.reference-table code {
    background: #001100;
    padding: 2px 6px;
    border: 1px solid #00aa00;
    font-family: 'Courier New', 'Monaco', 'Consolas', monospace;
}

.reference-table tbody tr:hover {
    background: #001100;
}

/* Responsive Design */
@media (max-width: 768px) {
    .cards {
        grid-template-columns: 1fr;
    }
    
    .main-nav {
        flex-direction: column;
        align-items: center;
    }
    
    .main-nav a {
        width: 100%;
        text-align: center;
    }
    
    h1 {
        font-size: 1.5rem;
    }
    
    .section-title {
        font-size: 1.4rem;
    }
}

/* 
Author: Myca Joanne M. Faeldonia
Description: CSS styles for JavaScript Machine Problems website with terminal/hacker theme.
Date: January 2026
*/