:root {
    --primary-color: #1a1a1a;
    --secondary-color: #333;
    --accent-color: #00b900;
    --text-color: #f0f0f0;
}

body {
    font-family: sans-serif;
    background-color: var(--primary-color);
    color: var(--text-color);
    margin: 0;
    padding: 0;
}

#app {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    padding: 15px;
    box-sizing: border-box;
}

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

#loading {
    text-align: center;
    padding: 50px;
    font-size: 1.2em;
}

#flavor-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
    gap: 15px;
    flex-grow: 1;
}
#flavor-grid.hidden { display: none; }

.flavor-card {
    border: 2px solid var(--secondary-color);
    border-radius: 8px;
    padding: 10px;
    text-align: center;
    cursor: pointer;
    transition: all 0.2s ease;
    background-color: var(--secondary-color);
}

.flavor-card img {
    width: 60px;
    height: 60px;
    object-fit: cover;
    border-radius: 50%;
    margin-bottom: 10px;
}

.flavor-card h3 {
    font-size: 1em;
    margin: 0;
    min-height: 2.4em; /* 2行分の高さを確保 */
}

.flavor-card.selected {
    border-color: var(--accent-color);
    background-color: #444;
    transform: scale(1.05);
    box-shadow: 0 0 15px rgba(0, 255, 0, 0.5);
}

footer {
    margin-top: 20px;
    padding-top: 15px;
    border-top: 1px solid var(--secondary-color);
}

#selected-flavors-display {
    text-align: center;
    min-height: 1.5em;
    margin-bottom: 15px;
    font-size: 1.1em;
}

#order-button {
    width: 100%;
    padding: 15px;
    font-size: 1.2em;
    font-weight: bold;
    border: none;
    border-radius: 8px;
    background-color: var(--accent-color);
    color: white;
    cursor: pointer;
}

#order-button:disabled {
    background-color: #555;
    cursor: not-allowed;
}