/**
 * 打赏弹窗前台样式（占位）
 * 实际弹窗由 donate.js 动态创建
 */
.navtool-donate-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: 99999;
    display: flex;
    justify-content: center;
    align-items: center;
    opacity: 0;
    transition: opacity 0.3s;
}

.navtool-donate-overlay.is-active {
    opacity: 1;
}

.navtool-donate-box {
    position: relative;
    background: var(--navtool-bg);
    border-radius: 12px;
    padding: 32px;
    max-width: 420px;
    width: 90%;
    text-align: center;
    box-shadow: 0 8px 40px rgba(0, 0, 0, 0.2);
    transform: scale(0.9);
    transition: transform 0.3s;
}

.navtool-donate-qr.hidden {
    display: none;
}

.navtool-donate-overlay.is-active .navtool-donate-box {
    transform: scale(1);
}

.navtool-donate-title {
    font-size: 20px;
    font-weight: 600;
    margin: 0 0 8px;
}

.navtool-donate-desc {
    font-size: 14px;
    color: var(--navtool-text);
    margin: 0 0 24px;
}

.navtool-donate-tabs {
    display: flex;
    justify-content: center;
    gap: 12px;
    margin-bottom: 20px;
}

.navtool-donate-tab {
    padding: 8px 20px;
    border-radius: 20px;
    border: 1px solid var(--navtool-theme);
    cursor: pointer;
    font-size: 14px;
    transition: all 0.2s;
    background: transparent;
    color: var(--navtool-theme);
}

.navtool-donate-tab.is-active {
    background: var(--navtool-theme);
    color: #fff;
}

.navtool-donate-qr img {
    max-width: 200px;
    border-radius: 8px;
}

.navtool-donate-close {
    position: absolute;
    top: 12px;
    right: 12px;
    background: none;
    border: none;
    font-size: 20px;
    cursor: pointer;
    color: #999;
    line-height: 1;
}

/* 暗色模式 — 背景色由 variables.css 自动处理 */