/* =========================================
   1. 規則說明區
   ========================================= */
.rule-box {
    background: rgba(0, 0, 0, 0.3);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 8px;
    padding: 20px;
    margin-bottom: 30px;
}

.rule-box h3 {
    margin-top: 0;
    color: var(--primary-gold, #fbb750);
    margin-bottom: 15px;
    font-size: 1.2rem;
    border-bottom: 1px dashed rgba(255, 255, 255, 0.1);
    padding-bottom: 10px;
}

/* 連結按鈕 */
.action-area {
    text-align: center;
}

.link-btn.large {
    display: inline-block;
    padding: 10px 25px;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    color: #fff;
    text-decoration: none;
    border-radius: 30px;
    transition: all 0.3s;
}

.link-btn.large:hover {
    background: var(--primary-gold, #fbb750);
    color: #000;
    border-color: var(--primary-gold, #fbb750);
}

.mt-20 {
    margin-top: 20px;
}

/* 顏色工具 */
.text-green {
    color: #81c784;
}

.text-red {
    color: #ff5252;
}

.text-blue {
    color: #64b5f6;
}

.text-gold {
    color: #ffd700;
}

.highlight {
    color: #ffd700;
    font-weight: bold;
}

/* =========================================
   2. 靈魂石網格 (Grid System)
   ========================================= */
.soul-grid {
    display: grid;
    /* 電腦版：自動適應，一排約 5 個 */
    grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
    gap: 15px;
    margin-bottom: 30px;
}

.soul-card {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 8px;
    overflow: hidden;
    text-align: center;
    transition: transform 0.2s;
    position: relative;
}

.soul-card:hover {
    transform: translateY(-5px);
}

.soul-floor {
    position: absolute;
    top: 5px;
    left: 5px;
    background: rgba(0, 0, 0, 0.8);
    /* 加深背景，讓文字更清楚 */
    padding: 3px 8px;
    border-radius: 4px;
    font-size: 0.85rem;
    color: #fff;
    /* 改為亮白色 */
    border: 1px solid rgba(255, 255, 255, 0.2);
    z-index: 10;
    /* ★ 關鍵修正：確保浮在圖片上方，不會被擋住 */
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.5);
    /* 增加陰影，提升立體感 */
    font-weight: bold;
    letter-spacing: 0.5px;
}

.soul-img {
    height: 140px;
    /* 圖片高度 */
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 10px;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.05) 0%, transparent 70%);
}

.soul-img img {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
    filter: drop-shadow(0 0 5px rgba(0, 0, 0, 0.5));
}

.soul-info {
    padding: 10px;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    background: rgba(0, 0, 0, 0.2);
}

.soul-info h4 {
    margin: 0 0 5px 0;
    font-size: 1rem;
    color: #fff;
}

.soul-stat {
    color: #888;
    font-size: 0.9rem;
}

.soul-stat strong {
    font-size: 1.1rem;
}

/* 普通魂配色 (藍色系) */
.normal-tier .soul-card:hover {
    border-color: #64b5f6;
}

.normal-tier .soul-stat strong {
    color: #64b5f6;
}

/* 覺醒魂配色 (紅色系) */
.awake-tier .soul-card {
    border-color: rgba(255, 82, 82, 0.3);
}

.awake-tier .soul-card:hover {
    border-color: #ff5252;
    box-shadow: 0 0 10px rgba(255, 82, 82, 0.2);
}

.awake-tier .soul-stat strong {
    color: #ff5252;
}

.awake-tier .soul-img {
    background: radial-gradient(circle, rgba(255, 82, 82, 0.1) 0%, transparent 70%);
}

/* =========================================
   3. RWD 手機版優化
   ========================================= */
@media (max-width: 768px) {

    /* 手機版改為雙欄 */
    .soul-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 10px;
    }

    .soul-img {
        height: 120px;
    }

    .soul-info h4 {
        font-size: 0.9rem;
    }
}