/* ============================================
   ToolHub 全站共享 UI 样式（与 index.html 保持一致）
   各页面请在本地样式之后引入本文件
   ============================================ */

/* 页面整体缩放 90% */
html { zoom: 0.9; }

/* 卡片悬停放大动画 */
.card-hover {
    transition: all 0.3s ease;
}
.card-hover:hover {
    transform: scale(1.03);
}

/* 按钮：取消悬停上浮与涟漪动画，仅保留颜色过渡 */
.btn-glow {
    transition: background-color 0.2s ease, color 0.2s ease, border-color 0.2s ease;
}

/* 用户头像下拉菜单 */
.user-menu {
    transform-origin: top right;
}
.user-menu-item {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    width: 100%;
    padding: 0.65rem 1rem;
    font-size: 0.875rem;
    color: #374151;
    background: #fff;
    text-align: left;
    line-height: 1.4;
    transition: background-color 0.15s ease;
}
.user-menu-item:hover { background: #f3f4f6; }
.user-menu-item i {
    width: 1rem;
    text-align: center;
    color: #6b7280;
    font-size: 0.8rem;
}
.user-menu-item.text-red-600 i { color: #dc2626; }
#user-menu-caret.menu-open { transform: rotate(180deg); }

/* 用户中心网格背景 */
.grid-bg {
    background-color: #f8fafc;
    background-image:
        linear-gradient(to right, rgba(17, 24, 39, 0.055) 1px, transparent 1px),
        linear-gradient(to bottom, rgba(17, 24, 39, 0.055) 1px, transparent 1px);
    background-size: 28px 28px;
}

/* 论坛富文本正文 */
.forum-content { line-height: 1.85; word-break: break-word; }
.forum-content p { margin: 0.4rem 0; }
.forum-content u { text-underline-offset: 3px; }
.forum-content img {
    display: block;
    max-width: 100%;
    border-radius: 0.6rem;
    margin: 0.75rem 0;
    border: 1px solid #e5e7eb;
}

/* 巨型菜单面板（通用） */
.mega-panel {
    transition: opacity .45s ease, transform .45s ease;
    transform-origin: top center;
}
.mega-panel.mega-closed {
    opacity: 0;
    transform: translateY(-6px);
    pointer-events: none;
}
.mega-chevron { transition: transform .22s ease; }
.mega-trigger.mega-open .mega-chevron { transform: rotate(180deg); }
.mega-item:hover .mega-icon { transform: scale(1.08); }
.mega-icon { transition: transform .2s ease; }

/* 巨型菜单打开时：页面内容统一模糊 + 白色磨砂 */
/* 注：filter 不设过渡，瞬时应用，避免每帧重新光栅化巨型元素导致卡顿 */
main.mega-blur, footer.mega-blur { filter: blur(3px); }
/* 模糊期间暂停内容内动画，避免每帧重新光栅化导致卡顿 */
main.mega-blur *, footer.mega-blur * { animation-play-state: paused !important; }

#mega-backdrop {
    position: fixed;
    left: 0; right: 0; bottom: 0; top: 3rem; /* 在 48px 导航栏之下 */
    z-index: 30;
    background: rgba(255, 255, 255, 0.7);
    opacity: 1;
    transition: opacity .45s ease;
    pointer-events: auto;
}
#mega-backdrop.mega-backdrop-closed {
    opacity: 0;
    pointer-events: none;
}

/* 巨型菜单打开时：导航栏取消透明 */
#navbar.mega-open {
    background: #fff !important;
    backdrop-filter: none !important;
    -webkit-backdrop-filter: none !important;
}

/* 页脚文字链接：悬停显示下划线 */
footer ul a:hover, footer .legal-links a:hover {
    text-decoration: underline;
    text-underline-offset: 4px;
}

@media (prefers-reduced-motion: reduce) {
    .mega-panel, .mega-chevron { transition: none; }
    .mega-panel.mega-closed { transform: none; }
}