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

:root {
    --primary-color: #007bff;
    --secondary-color: #6c757d;
    --background-color: #f8f9fa;
    --card-background: #ffffff;
    --text-color: #333;
    --border-color: #ddd;
    --success-color: #28a745;
    --danger-color: #dc3545;
    --neutral-color: #ffc107;
    --font-family: sans-serif;
}

body {
    font-family: var(--font-family);
    background-color: var(--background-color);
    line-height: 1.6;
    padding: 15px;
    color: var(--text-color);
}

@media (prefers-color-scheme: dark) {
    :root {
        --background-color: #1e1e1e;
        --card-background: #252526;
        --text-color: #f0f0f0;
        --secondary-color: #b0b0b0;
        --border-color: #444;
        --primary-color: #4a90e2;
        --success-color: #4ade80;
        --danger-color: #f97171;
        --neutral-color: #ffda63;
    }

    hr {
        border-top: 1px solid var(--border-color);
    }
}

main {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

header {
    text-align: center;
    margin-bottom: 20px;
}

.card {
    background: var(--card-background);
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

.input-group {
    margin-bottom: 15px;
    display: flex;
    flex-direction: column;
}

.input-group label {
    font-weight: bold;
    margin-bottom: 5px;
}

.input-group input[type="number"],
.input-group input[type="text"] {
    width: 100%;
    padding: 10px;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    font-size: 1em;
    background-color: var(--background-color);
    color: var(--text-color);
}

.input-group small {
    color: var(--secondary-color);
    font-size: 0.8em;
    margin-top: 3px;
}

button {
    width: 100%;
    padding: 12px;
    background-color: var(--primary-color);
    color: var(--text-color);
    border: none;
    border-radius: 4px;
    font-size: 1.1em;
    cursor: pointer;
    transition: background-color 0.3s;
}

button:hover {
    background-color: #0056b3;
}

.hidden {
    display: none;
}

#valuation-breakdown p {
    margin: 5px 0;
    padding-left: 10px;
    border-left: 3px solid var(--primary-color);
}

#summary {
    font-size: 1.1em;
}

#summary strong {
    color: var(--primary-color);
}

#decision-panel {
    text-align: center;
    margin-top: 20px;
    padding: 15px;
    border-radius: 6px;
    border: 1px solid var(--border-color);
}

#decision-title {
    color: #333;
}

.status-buy {
    background-color: var(--success-color);
    color: white;
}

.status-sell {
    background-color: var(--danger-color);
    color: white;
}

.status-neutral {
    background-color: var(--neutral-color);
    color: #333;
}

#decision-text {
    padding: 10px;
    border-radius: 4px;
    font-weight: bold;
    margin-top: 10px;
}

@media (min-width: 600px) {
    body {
        padding: 30px;
    }

    main {
        flex-direction: row;
        max-width: 1000px;
        margin: 0 auto;
    }

    #inputs {
        flex: 1;
    }

    #results {
        flex: 1;
    }

    button {
        padding: 15px;
    }
}