:root {
    --terminal-green: #39cf39; 
    --terminal-dark: #222222;
    --terminal-glow: #00ff0033;
    --terminal-bg: #222222;
    --terminal-font: 'VT323', monospace;
    --border-color: #268226;
}

body {
    font-family: var(--terminal-font);
    margin: 0;
    padding: 1rem;
    background-color: var(--terminal-bg);
    line-height: 1.6;
    color: var(--terminal-green);
    font-size: 18px; 
}

.container {
    background-color: var(--terminal-dark);
    padding: 1rem;
    padding-top: 4rem;
    border-radius: 0.25rem;
    border: 0.125rem solid var(--border-color);
    max-width: 50rem;
    margin: 0 auto;
    position: relative;
}

h1, h2 {
    text-align: center;
    color: var(--terminal-green);
    border-bottom: 0.125rem solid var(--border-color);
    padding-bottom: 0.625rem;
    font-size: 2rem;
    margin-top: 0.5rem;
    text-transform: uppercase;
    letter-spacing: 0.125rem;
}

.conversion-section {
    margin-top: 1.25rem;
    padding: 1rem;
    background-color: var(--terminal-dark);
    border: 0.0625rem solid var(--border-color);
    border-radius: 0.25rem;
}

input {
    width: 100%;
    padding: 0.75rem;
    margin-bottom: 1rem;
    box-sizing: border-box;
    border: 0.0625rem solid var(--border-color);
    border-radius: 0.25rem;
    font-size: 1.2rem;
    background-color: var(--terminal-dark);
    color: var(--terminal-green);
    font-family: var(--terminal-font);
}

input:focus {
    outline: 0.125rem solid var(--terminal-green);
    border-color: transparent;
}

button {
    width: 100%;
    padding: 0.75rem;
    background-color: var(--terminal-dark);
    color: var(--terminal-green);
    border: 0.0625rem solid var(--border-color);
    border-radius: 0.25rem;
    cursor: pointer;
    transition: background-color 0.2s ease;
    font-size: 1.2rem;
    margin-bottom: 1rem;
    font-family: var(--terminal-font);
    text-transform: uppercase;
    letter-spacing: 0.125rem;
}

button:hover, button:focus {
    background-color: var(--terminal-green);
    color: var(--terminal-dark);
    outline: none;
}

button:focus {
    outline: 0.125rem solid var(--terminal-green);
    outline-offset: 0.125rem;
}

#conversionSteps {
    background-color: var(--terminal-dark);
    border-left: 0.25rem solid var(--terminal-green);
    padding: 1rem;
    margin-top: 1rem;
    font-family: var(--terminal-font);
}

.step {
    margin-bottom: 0.625rem;
    padding: 0.625rem;
    background-color: var(--terminal-dark);
    border: 0.0625rem solid var(--terminal-green);
    border-radius: 0.1875rem;
}

.binary-digit {
    width: 2.5rem;
    height: 2.5rem;
    margin: 0 0.3125rem;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 0.125rem solid var(--border-color);
    border-radius: 0.25rem;
    font-size: 1.5rem;
    background-color: var(--terminal-dark);
    color: var(--terminal-green);
}

.binary-digit.current {
    background-color: var(--terminal-green);
    color: var(--terminal-dark);
}

.binary-digit.filled {
    background-color: var(--terminal-dark);
}

.error-message {
    border: 0.0625rem solid var(--border-color);
    padding: 1rem;
    margin: 1rem 0;
    border-radius: 0.25rem;
    background-color: var(--terminal-dark);
}

/* Update GitHub corner */
.github-corner svg {
    fill: var(--terminal-green);
    color: var(--terminal-dark);
}

/* Remove animation for reduced motion preference */
@media (prefers-reduced-motion: reduce) {
    * {
        animation: none !important;
        transition: none !important;
    }
}

/* Modal styles */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.9);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 1000;
}

.modal-content {
    position: relative;
    background-color: var(--terminal-dark);
    border: 0.125rem solid var(--border-color);
    color: var(--terminal-green);
    padding: 2rem;
    border-radius: 0.25rem;
    max-width: 90%;
    max-height: 90vh;
    overflow-y: auto;
}

.close-button {
    position: absolute;
    top: 1rem;
    right: 1rem;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--terminal-green);
    padding: 0.5rem;
}

.close-button:hover {
    color: var(--terminal-dark);
    background-color: var(--terminal-green);
}

/* Scrollbar styling */
::-webkit-scrollbar {
    width: 0.75rem;
}

::-webkit-scrollbar-track {
    background: var(--terminal-dark);
    border: 0.0625rem solid var(--border-color);
}

::-webkit-scrollbar-thumb {
    background: var(--terminal-green);
    border: 0.0625rem solid var(--terminal-dark);
}

/* Screen effect overlay */
.container::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: repeating-linear-gradient(
        0deg,
        rgba(0, 255, 0, 0.03) 0,
        rgba(0, 255, 0, 0.03) 1px,
        transparent 1px,
        transparent 2px
    );
    pointer-events: none;
    border-radius: 0.5rem;
}

.highlight {
    font-weight: bold;
    color: #e74c3c;
}

.binary-result {
    font-weight: bold;
    color: #2ecc71;
    font-size: 1.2em;
}

.explanation {
    background-color: var(--terminal-dark);
    padding: 1rem;
    margin-top: 0.625rem;
    border-radius: 0.3125rem;
}

.math-symbol {
    color: #3498db;
    font-weight: bold;
}

.power-grid {
    font-family: monospace;
    font-size: 1.1em;
    line-height: 1.8;
    margin: 0.625rem 0;
    white-space: pre;
}

.explanation strong {
    color: #2c3e50;
    display: block;
    margin-top: 15px;
}

.explanation ul {
    margin: 5px 0;
    padding-left: 20px;
}

.math-explanation {
    background-color: var(--terminal-dark);
    padding: 10px;
    border-radius: 4px;
    margin: 10px 0;
    font-family: monospace;
}

.binary-progress {
    margin: 1.25rem 0;
    text-align: center;
}

.binary-digits {
    display: flex;
    justify-content: center;
    margin-bottom: 5px;
}

.power-labels {
    display: flex;
    justify-content: center;
}

.power-label {
    width: 2.5rem;
    margin: 0 0.3125rem;
    font-size: 0.9em;
    color: #7f8c8d;
}

.step-question {
    background-color: var(--terminal-dark);
    padding: 1.25rem;
    border-radius: 0.5rem;
    margin: 1.25rem 0;
    text-align: center;
}

.choice-buttons {
    display: flex;
    justify-content: center;
    gap: 1.25rem;
    margin-top: 1rem;
}

.choice-buttons button {
    width: auto;
    min-width: 7.5rem;
    padding: 0.625rem 1.25rem;
}

.completion-message {
    text-align: center;
    background-color: var(--terminal-dark);
    padding: 1.25rem;
    border-radius: 0.5rem;
    margin-top: 1.25rem;
}

.final-explanation {
    margin: 20px 0;
    font-size: 1.2em;
    color: #2c3e50;
}

@keyframes shake {
    0%, 100% { transform: translateX(0); }
    25% { transform: translateX(-10px); }
    75% { transform: translateX(10px); }
}

.info-button {
    position: relative;
    width: 100%;
    margin-bottom: 1rem;
    padding: 1rem;
    font-size: 0.9em;
}

.info-button:hover {
    background-color: var(--terminal-green);
    color: var(--terminal-dark);
}

.method-intro {
    line-height: 1.6;
    margin: 20px 0;
    color: var(--terminal-green);
}

.steps-section {
    background-color: var(--terminal-dark);
    padding: 1.25rem;
    border-radius: 0.375rem;
    margin: 1.25rem 0;
}

.steps-section ol {
    margin: 0;
    padding-left: 20px;
}

.steps-section li {
    margin: 10px 0;
    color: var(--terminal-green);
}

.example-section {
    border-top: 0.125rem solid var(--border-color);
    margin-top: 1.25rem;
    padding-top: 1.25rem;
}

.example-section h3 {
    color: var(--terminal-green);
    margin-bottom: 15px;
}

.powers {
    font-family: monospace;
    background-color: var(--terminal-dark);
    padding: 10px;
    border-radius: 4px;
}

.conversion-steps {
    list-style: none;
    padding: 0;
}

.conversion-steps li {
    margin: 8px 0;
    font-family: monospace;
    color: var(--terminal-green);
}

.result {
    margin-top: 20px;
    font-weight: bold;
}

.result .binary-result {
    font-family: monospace;
    color: var(--terminal-green);
    font-size: 1.2em;
}

/* Update media queries */
@media (min-width: 48rem) {
    body {
        padding: 1.25rem;
        font-size: 1.25rem;
    }

    h1 {
        font-size: 2.5rem;
    }

    .container {
        padding: 2rem;
    }

    .info-button {
        position: absolute;
        top: 2rem;
        right: 2rem;
        width: auto;
    }

    .conversion-section {
        padding: 1.25rem;
    }

    input, button {
        font-size: 1.2rem;
    }

    .github-corner svg {
        width: 5rem;
        height: 5rem;
        position: absolute;
    }
}

/* Existing styles for GitHub corner */
.github-corner:hover .octo-arm {
    animation: octocat-wave 560ms ease-in-out;
}

@keyframes octocat-wave {
    0%, 100% { transform: rotate(0); }
    20%, 60% { transform: rotate(-25deg); }
    40%, 80% { transform: rotate(10deg); }
}

/* Adjust GitHub corner for mobile */
@media (max-width: 47.9375rem) { /* 767px */
    .github-corner svg {
        width: 3.75rem;
        height: 3.75rem;
    }
    
    .github-corner:hover .octo-arm {
        animation: none;
    }
    
    .github-corner .octo-arm {
        animation: octocat-wave 560ms ease-in-out;
    }
}

/* Update GitHub corner styles for mobile */
.github-corner {
    position: absolute;
    top: 0;
    right: 0;
    z-index: 2;
}

.github-corner svg {
    position: fixed;
    top: 0;
    right: 0;
}