/* ============================================================
 * 导航栏美化 Pro - 前端样式
 * 兼容 B2 主题 .ym-menu .sub-menu / .top-menu ul.sub-menu 结构
 * ============================================================ */

/* ---------- ym-menu 下拉菜单整体 ---------- */
.ym-menu .sub-menu {
    padding: 8px 0 !important;
    border: 1px solid rgba(0, 0, 0, 0.06) !important;
    box-shadow: 0 8px 28px rgba(0, 0, 0, 0.1) !important;
    background: #fff !important;
    min-width: 180px;
    border-radius: 8px !important;
    left: -50px !important;
    animation: nbp-slide-in .25s ease both;
}

/* ---------- top-menu 下拉菜单整体 ---------- */
.header .top-menu ul.sub-menu {
    padding: 8px 0 !important;
    border: 1px solid rgba(0, 0, 0, 0.06) !important;
    box-shadow: 0 8px 28px rgba(0, 0, 0, 0.1) !important;
    background: #fff !important;
    min-width: 180px;
    border-radius: 8px !important;
    animation: nbp-slide-in .25s ease both;
}

/* ---------- 子菜单项通用 ---------- */
.ym-menu .sub-menu li a,
.header .top-menu ul.sub-menu li a {
    position: relative !important;
    display: flex !important;
    align-items: center !important;
    justify-content: flex-start !important;
    padding: 9px 16px 9px 38px !important;
    font-size: 14px !important;
    line-height: 1.6 !important;
    color: #333 !important;
    border-radius: 0 !important;
    transition: background-color .25s ease, color .25s ease, transform .25s ease, padding-left .25s ease;
    overflow: hidden;
    white-space: nowrap;
    gap: 8px;
}

/* ---------- 悬浮效果 ---------- */
.ym-menu .sub-menu li a:hover,
.header .top-menu ul.sub-menu li a:hover,
.ym-menu .sub-menu li a.nbp-focus,
.header .top-menu ul.sub-menu li a.nbp-focus {
    background: linear-gradient(90deg, rgba(var(--nbp-rgb, 99, 102, 241), .12) 0%, rgba(var(--nbp-rgb, 99, 102, 241), 0) 100%) !important;
    color: var(--nbp-c, #333) !important;
    padding-left: 44px !important;
}

/* ---------- 彩色圆点 ---------- */
.nbp-dot {
    position: absolute;
    left: 16px;
    top: 50%;
    transform: translateY(-50%) scale(1);
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--nbp-c, #1890ff);
    box-shadow: 0 0 0 0 var(--nbp-c, #1890ff);
    transition: transform .35s cubic-bezier(.34,1.56,.64,1), box-shadow .35s ease;
    flex-shrink: 0;
}

.ym-menu .sub-menu li a:hover .nbp-dot,
.header .top-menu ul.sub-menu li a:hover .nbp-dot,
.ym-menu .sub-menu li a.nbp-focus .nbp-dot,
.header .top-menu ul.sub-menu li a.nbp-focus .nbp-dot {
    transform: translateY(-50%) scale(1.4);
    box-shadow: 0 0 0 4px rgba(0, 0, 0, 0.04);
}

/* ---------- 图标 ---------- */
.nbp-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 22px;
    height: 22px;
    margin-right: 6px;
    font-style: normal;
    font-size: 15px;
    line-height: 1;
    color: var(--nbp-c, #1890ff);
    background: color-mix(in srgb, var(--nbp-c, #1890ff) 12%, transparent);
    border-radius: 6px;
    flex-shrink: 0;
    transition: transform .3s cubic-bezier(.34,1.56,.64,1);
}

.ym-menu .sub-menu li a:hover .nbp-icon,
.header .top-menu ul.sub-menu li a:hover .nbp-icon,
.ym-menu .sub-menu li a.nbp-focus .nbp-icon,
.header .top-menu ul.sub-menu li a.nbp-focus .nbp-icon {
    transform: rotate(-8deg) scale(1.1);
}

/* ---------- 角标 (HOT / NEW / VIP / TOP / FREE) ---------- */
.nbp-badge {
    position: absolute;
    top: 50%;
    right: 10px;
    transform: translateY(-50%);
    display: inline-block;
    padding: 1px 6px;
    border-radius: 8px 8px 8px 2px;
    font-size: 10px;
    line-height: 1.4;
    color: #fff;
    font-weight: 700;
    letter-spacing: .5px;
    pointer-events: none;
    z-index: 2;
}

.ym-menu .sub-menu li a:has(.nbp-badge),
.header .top-menu ul.sub-menu li a:has(.nbp-badge) {
    padding-right: 50px !important;
}

.nbp-badge-hot { background: linear-gradient(135deg, #ff4d4f, #ff7875); }
.nbp-badge-new { background: linear-gradient(135deg, #36cfc9, #5cdbd3); }
.nbp-badge-vip { background: linear-gradient(135deg, #b37feb, #9254de); }
.nbp-badge-top { background: linear-gradient(135deg, #ffa940, #ffc069); }
.nbp-badge-free { background: linear-gradient(135deg, #52c41a, #95de64); }

/* ---------- 菜单进入动画 ---------- */
@keyframes nbp-slide-in {
    from {
        opacity: 0;
        transform: translateY(-8px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.ym-menu .sub-menu li,
.header .top-menu ul.sub-menu li {
    animation: nbp-slide-in .35s ease both;
}
.ym-menu .sub-menu li:nth-child(1),  .header .top-menu ul.sub-menu li:nth-child(1)  { animation-delay: .02s; }
.ym-menu .sub-menu li:nth-child(2),  .header .top-menu ul.sub-menu li:nth-child(2)  { animation-delay: .04s; }
.ym-menu .sub-menu li:nth-child(3),  .header .top-menu ul.sub-menu li:nth-child(3)  { animation-delay: .06s; }
.ym-menu .sub-menu li:nth-child(4),  .header .top-menu ul.sub-menu li:nth-child(4)  { animation-delay: .08s; }
.ym-menu .sub-menu li:nth-child(5),  .header .top-menu ul.sub-menu li:nth-child(5)  { animation-delay: .10s; }
.ym-menu .sub-menu li:nth-child(6),  .header .top-menu ul.sub-menu li:nth-child(6)  { animation-delay: .12s; }
.ym-menu .sub-menu li:nth-child(7),  .header .top-menu ul.sub-menu li:nth-child(7)  { animation-delay: .14s; }
.ym-menu .sub-menu li:nth-child(8),  .header .top-menu ul.sub-menu li:nth-child(8)  { animation-delay: .16s; }
.ym-menu .sub-menu li:nth-child(9),  .header .top-menu ul.sub-menu li:nth-child(9)  { animation-delay: .18s; }
.ym-menu .sub-menu li:nth-child(10), .header .top-menu ul.sub-menu li:nth-child(10) { animation-delay: .20s; }
.ym-menu .sub-menu li:nth-child(n+11), .header .top-menu ul.sub-menu li:nth-child(n+11) { animation-delay: .22s; }

/* ---------- 暗色模式适配 ---------- */
body.b2dark .ym-menu .sub-menu,
body.b2dark .header .top-menu ul.sub-menu {
    background: #2a2a2a !important;
    border-color: rgba(255, 255, 255, 0.06) !important;
}

body.b2dark .ym-menu .sub-menu li a,
body.b2dark .header .top-menu ul.sub-menu li a {
    color: #e0e0e0 !important;
}

body.b2dark .ym-menu .sub-menu li a:hover,
body.b2dark .header .top-menu ul.sub-menu li a:hover {
    background: linear-gradient(90deg, rgba(var(--nbp-rgb, 99, 102, 241), .22) 0%, rgba(var(--nbp-rgb, 99, 102, 241), 0) 100%) !important;
}

body.b2dark .ym-menu .sub-menu li a:hover .nbp-dot,
body.b2dark .header .top-menu ul.sub-menu li a:hover .nbp-dot {
    box-shadow: 0 0 0 4px rgba(255, 255, 255, 0.08);
}

/* ---------- 移动端适配 ---------- */
@media (max-width: 768px) {
    .ym-menu .sub-menu li,
    .header .top-menu ul.sub-menu li {
        animation: none;
    }
    .ym-menu .sub-menu li a,
    .header .top-menu ul.sub-menu li a {
        padding-left: 28px !important;
    }
    .nbp-dot { left: 10px; }
    .nbp-icon { width: 20px; height: 20px; font-size: 13px; }
    .nbp-badge { right: 6px; font-size: 9px; }
}

/* ---------- 减少动画偏好 ---------- */
@media (prefers-reduced-motion: reduce) {
    .ym-menu .sub-menu,
    .header .top-menu ul.sub-menu,
    .ym-menu .sub-menu li,
    .header .top-menu ul.sub-menu li {
        animation: none !important;
    }
    .nbp-dot, .nbp-icon,
    .ym-menu .sub-menu li a,
    .header .top-menu ul.sub-menu li a {
        transition: none !important;
    }
}