:root {
    --primary-color: #3b82f6;
    --bg-color: #f8fafc;
    --text-color: #1e293b;
    --card-bg: #ffffff;
    --border-color: #e2e8f0;
}

body {
    font-family: 'Inter', 'Noto Sans JP', sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    margin: 0;
    padding: 0;
    line-height: 1.6;
}

.container {
    max-width: 800px;
    margin: 0 auto;
    padding: 2rem;
}

header {
    margin-bottom: 2rem;
    text-align: center;
}

h1 {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.reference {
    font-size: 0.9rem;
    color: #64748b;
}

.input-group {
    background: var(--card-bg);
    padding: 1.5rem;
    border-radius: 0.5rem;
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
    margin-bottom: 1rem;
}

label {
    display: block;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

select {
    width: 100%;
    padding: 0.5rem;
    border: 1px solid var(--border-color);
    border-radius: 0.25rem;
    font-size: 1rem;
}

.checkbox-group label {
    display: flex;
    align-items: center;
    font-weight: normal;
    cursor: pointer;
}

.checkbox-group input[type="checkbox"] {
    margin-right: 0.5rem;
    width: 1.25rem;
    height: 1.25rem;
}

.note {
    font-size: 0.85rem;
    color: #64748b;
    margin-top: 0.25rem;
    margin-left: 1.75rem;
}

.result-area {
    margin-top: 2rem;
    background: var(--card-bg);
    padding: 2rem;
    border-radius: 0.5rem;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    border: 2px solid var(--primary-color);
}

.hidden {
    display: none;
}

.result-list {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 1rem;
    margin-top: 1rem;
}

.boss-card {
    border: 1px solid var(--border-color);
    border-radius: 0.5rem;
    padding: 1rem;
    background-color: #f1f5f9;
}

.boss-name {
    font-weight: 700;
    font-size: 1.1rem;
    margin-bottom: 0.5rem;
    color: #0f172a;
}

.boss-weakness {
    font-size: 0.9rem;
    color: #475569;
}

.weakness-tag {
    display: inline-block;
    padding: 0.2rem 0.5rem;
    border-radius: 9999px;
    font-size: 0.8rem;
    font-weight: 700;
    margin-right: 0.25rem;
    margin-bottom: 0.25rem;
    color: white;
}

.weakness-holy { background-color: #fbbf24; color: #78350f; } /* 聖 */
.weakness-fire { background-color: #ef4444; } /* 炎 */
.weakness-lightning { background-color: #eab308; color:#713f12; } /* 雷 */
.weakness-poison { background-color: #a855f7; } /* 毒 */
.weakness-madness { background-color: #f59e0b; } /* 発狂 */
.weakness-magic { background-color: #3b82f6; } /* 魔力 */
.weakness-sleep { background-color: #6366f1; } /* 睡眠 */
.weakness-rot { background-color: #be123c; } /* 腐敗 */

footer {
    margin-top: 3rem;
    text-align: center;
}

footer a {
    color: var(--primary-color);
    text-decoration: none;
}

footer a:hover {
    text-decoration: underline;
}
.weakness-default { background-color: #64748b; } /* その他/なし */