:root {
    --bg: #fdf6e3;
    --fg: #5c6a72;
    --section-bg: #dfddc8;
    --accent: #35a77c;
    --accent-hover: #dfa000;
    --muted: #888;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background: var(--bg);
    min-height: 100vh;
    padding: 20px;
    color: var(--fg);
}

.container {
    max-width: 600px;
    margin: 0 auto;
}

h1 {
    color: var(--fg);
    text-align: center;
    margin-bottom: 10px;
    font-size: 2rem;
}

.subtitle {
    color: var(--fg);
    text-align: center;
    margin-bottom: 30px;
    font-size: 1.1rem;
}

.calculator {
    background: var(--section-bg);
    border-radius: 24px;
    corner-shape: squircle;
    padding: 30px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.15);
    border: 1px solid var(--fg);
}

.input-group {
    margin-bottom: 20px;
}

label {
    display: block;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--fg);
}

input[type="number"] {
    width: 100%;
    padding: 12px;
    border: 1px solid var(--fg);
    border-radius: 12px;
    corner-shape: squircle;
    font-size: 16px;
    background: var(--bg);
    color: var(--fg);
    transition: border-color 0.3s;
}

input[type="number"]:focus {
    outline: none;
    border-color: var(--accent);
}

input[type="number"].error {
    border-color: #f85552;
}

.error-message {
    color: #f85552;
    font-size: 0.85rem;
    margin-top: 5px;
}

small {
    display: block;
    margin-top: 5px;
    color: var(--muted);
    font-size: 0.85rem;
}

button {
    width: 100%;
    padding: 15px;
    background: var(--accent);
    color: white;
    border: 1px solid var(--fg);
    border-radius: 12px;
    corner-shape: squircle;
    font-size: 18px;
    font-weight: 600;
    cursor: pointer;
    transition: transform 0.2s, background 0.2s;
    margin-top: 10px;
}

button:hover {
    transform: translateY(-2px);
    background: var(--accent-hover);
}

button:active {
    transform: translateY(0);
}

.results {
    margin-top: 30px;
    padding-top: 30px;
    border-top: 1px solid var(--fg);
}

.results.hidden {
    display: none;
}

.results h2 {
    color: var(--fg);
    margin-bottom: 20px;
    font-size: 1.5rem;
}

.result-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px;
    margin-bottom: 10px;
    background: var(--bg);
    border-radius: 12px;
    corner-shape: squircle;
    border: 1px solid var(--fg);
}

.result-item.highlight {
    background: var(--bg);
    border: 1px solid var(--accent);
}

.result-item .label {
    font-weight: 500;
    color: var(--fg);
}

.result-item .value {
    font-weight: 700;
    font-size: 1.2rem;
    color: var(--accent);
}

.platforms-title {
    color: var(--fg);
    margin: 25px 0 15px 0;
    font-size: 1.2rem;
}

.platform-result {
    background: var(--bg);
    border-radius: 16px;
    corner-shape: squircle;
    padding: 15px;
    margin-bottom: 12px;
    border: 1px solid var(--fg);
    border-left: 3px solid var(--accent);
    transition: transform 0.2s, box-shadow 0.2s;
}

.platform-result:hover {
    transform: translateX(3px);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.platform-name {
    font-weight: 700;
    font-size: 1.1rem;
    color: var(--fg);
    margin-bottom: 10px;
}

.platform-details {
    display: flex;
    justify-content: space-between;
    gap: 15px;
    flex-wrap: wrap;
}

.platform-stat {
    display: flex;
    flex-direction: column;
    gap: 3px;
}

.stat-label {
    font-size: 0.8rem;
    color: var(--muted);
    letter-spacing: 0.5px;
}

.stat-value {
    font-weight: 600;
    font-size: 1rem;
    color: var(--accent);
}

.platform-stat.rate .stat-value {
    color: var(--muted);
    font-size: 0.9rem;
}

.interpretation {
    margin-top: 20px;
    padding: 15px;
    background: var(--bg);
    border-left: 3px solid var(--accent-hover);
    border: 1px solid var(--fg);
    border-left: 3px solid var(--accent-hover);
    border-radius: 12px;
    corner-shape: squircle;
}

.interpretation p {
    color: var(--fg);
    line-height: 1.6;
}

footer {
    text-align: center;
    margin-top: 30px;
    color: var(--fg);
    font-size: 0.9rem;
}

@media (max-width: 640px) {
    h1 {
        font-size: 1.5rem;
    }
    
    .subtitle {
        font-size: 1rem;
    }
    
    .calculator {
        padding: 20px;
    }
    
    .result-item {
        flex-direction: column;
        align-items: flex-start;
        gap: 5px;
    }
}