/* 图片占位符样式 */
.rocket-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
    background: linear-gradient(135deg, #1a1a2e, #16213e);
    display: flex;
    align-items: center;
    justify-content: center;
    color: #ffffff;
    font-size: 1.2rem;
    font-weight: 600;
    text-align: center;
    position: relative;
}

/* 为每个火箭类型添加特定的占位符内容 */
.rocket-card[data-rocket="falcon9"] .rocket-img:not([src]),
.rocket-card[data-rocket="falcon9"] .rocket-img[src=""] {
    background: linear-gradient(135deg, #1a1a2e, #16213e);
}

.rocket-card[data-rocket="falcon9"] .rocket-img:not([src])::before,
.rocket-card[data-rocket="falcon9"] .rocket-img[src=""]::before {
    content: "🚀 猎鹰9号";
    font-size: 1.5rem;
    background: linear-gradient(45deg, #ff6b35, #00d4ff);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.rocket-card[data-rocket="falconheavy"] .rocket-img:not([src]),
.rocket-card[data-rocket="falconheavy"] .rocket-img[src=""] {
    background: linear-gradient(135deg, #1a1a2e, #16213e);
}

.rocket-card[data-rocket="falconheavy"] .rocket-img:not([src])::before,
.rocket-card[data-rocket="falconheavy"] .rocket-img[src=""]::before {
    content: "🚀 重型猎鹰";
    font-size: 1.5rem;
    background: linear-gradient(45deg, #ff6b35, #00d4ff);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.rocket-card[data-rocket="starship"] .rocket-img:not([src]),
.rocket-card[data-rocket="starship"] .rocket-img[src=""] {
    background: linear-gradient(135deg, #1a1a2e, #16213e);
}

.rocket-card[data-rocket="starship"] .rocket-img:not([src])::before,
.rocket-card[data-rocket="starship"] .rocket-img[src=""]::before {
    content: "🚀 星舰";
    font-size: 1.5rem;
    background: linear-gradient(45deg, #ff6b35, #00d4ff);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.rocket-card[data-rocket="dragon"] .rocket-img:not([src]),
.rocket-card[data-rocket="dragon"] .rocket-img[src=""] {
    background: linear-gradient(135deg, #1a1a2e, #16213e);
}

.rocket-card[data-rocket="dragon"] .rocket-img:not([src])::before,
.rocket-card[data-rocket="dragon"] .rocket-img[src=""]::before {
    content: "🚀 龙飞船";
    font-size: 1.5rem;
    background: linear-gradient(45deg, #ff6b35, #00d4ff);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* 图片加载成功时的样式 */
.rocket-img[src]:not([src=""]) {
    background: none;
}

.rocket-img[src]:not([src=""])::before {
    display: none;
}