/* site_features_grid_V0.01.css */

/* 1. 基礎樣式 */
.site-features-showcase {
    box-sizing: border-box;
    -webkit-box-sizing: border-box;
}

/* 覆寫 main_V0.20.css 全域 .feature-card { padding:20px }，避免影響首頁八張介紹卡 */
.site-features-showcase .feature-card {
    padding: 0;
}

/* 2. 布局樣式 */
.features-grid-container {
    max-width: 950px;
    margin: 3px auto;
    padding: 0 10px;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 4px;
}

.feature-card {
    --feature-card-radius: 24px;
    background: linear-gradient(145deg, rgba(255, 255, 255, 0.08), rgba(255, 255, 255, 0.03));
    backdrop-filter: blur(15px);
    -webkit-backdrop-filter: blur(15px);
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: var(--feature-card-radius);
    overflow: hidden;
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    display: flex;
    flex-direction: column;
    box-shadow: 0 15px 35px rgba(0,0,0,0.4);
    position: relative;
}

.feature-card:hover {
    transform: translateY(-8px) scale(1.02);
    border-color: rgba(255, 255, 255, 0.4);
    box-shadow: 0 25px 50px rgba(0,0,0,0.6);
    background: linear-gradient(145deg, rgba(255, 255, 255, 0.12), rgba(255, 255, 255, 0.05));
}

.feature-card-image-wrapper {
    width: 100%;
    aspect-ratio: 16/10;
    overflow: hidden;
    position: relative;
    padding: 3px;
    box-sizing: border-box;
    -webkit-box-sizing: border-box;
}

.feature-card-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.6s ease;
    display: block;
    border-radius: calc(var(--feature-card-radius) - 3px);
    -webkit-border-radius: calc(var(--feature-card-radius) - 3px);
}

.feature-card:hover .feature-card-image {
    transform: scale(1.1);
}

.feature-card-content {
    padding: 5px 20px 20px 20px;
    text-align: center;
    flex-grow: 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}

.feature-card-title {
    font-size: 1.1rem;
    font-weight: 800;
    color: #fff;
    margin-bottom: 10px;
    width: 100%;
    text-align: center;
    background: linear-gradient(to right, #fff, #b3e5fc);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    /* 漸層字無法用 text-shadow，改用 drop-shadow（Safari / Chrome 皆適用） */
    filter: drop-shadow(0 1px 2px rgba(0, 0, 0, 0.95)) drop-shadow(0 2px 8px rgba(0, 0, 0, 0.75));
    -webkit-filter: drop-shadow(0 1px 2px rgba(0, 0, 0, 0.95)) drop-shadow(0 2px 8px rgba(0, 0, 0, 0.75));
}

.feature-card-desc {
    font-size: 0.85rem;
    color: #ff9ec8;
    line-height: 1.6;
    font-weight: 500;
    text-align: center;
    width: 100%;
    text-shadow: 0 1px 3px rgba(0, 0, 0, 0.85), 0 2px 10px rgba(0, 0, 0, 0.6);
}

/* Fallback/Placeholder for cards without images */
.feature-card-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 3.5rem;
    position: relative;
}

.placeholder-rewards {
    background: radial-gradient(circle at center, rgba(255, 215, 0, 0.3), rgba(0, 0, 0, 0));
}

.placeholder-theme {
    background: radial-gradient(circle at center, rgba(0, 234, 211, 0.3), rgba(0, 0, 0, 0));
}

@media (max-width: 600px) {
    .features-grid {
        gap: 4px;
    }
    .feature-card-content {
        padding: 5px 15px 15px 15px;
    }
    .feature-card-title {
        font-size: 0.95rem;
        margin-bottom: 6px;
    }
    .feature-card-desc {
        font-size: 0.78rem;
        line-height: 1.4;
    }
    .features-grid-container {
        margin-top: 3px;
        margin-bottom: 3px;
    }
}

@media (min-width: 768px) {
    .feature-card-title {
        font-size: 1.25rem;
    }
    .feature-card-desc {
        font-size: 0.95rem;
    }
}