// ==UserScript==
// @license MIT
// @name         Google搜索美化
// @namespace    https://github.com/user-scripts
// @version      7.0
// @description  美化Google搜索结果：宽屏居中显示、去除广告、背景色、悬停效果、整卡可点击
// @author       User
// @match        https://www.google.com/search*
// @match        https://www.google.com.hk/search*
// @grant        none
// @run-at       document-start
// @downloadURL none
// ==/UserScript==

(function () {
    'use strict';

    if (window.__gsBeautified) return;
    window.__gsBeautified = true;

    const CARD_BG    = '#f5e4ea';
    const CARD_HOVER = '#e4f5f4';

    const CSS = `
        /* 隐藏广告 */
        #tads, #tadsb, #bottomads,
        .commercial_unit, .ads-ad,
        [data-text-ad], .uEierd, .U3A9Ac {
            display: none !important;
        }

        /* ✅ 让 rcnt 撑满并居中 */
        #rcnt {
            width: 100% !important;
            max-width: 1100px !important;
            margin: 0 auto !important;
            box-sizing: border-box !important;
            display: block !important;
        }

        /* ✅ center_col 独占整行，不给右侧栏留空间 */
        #center_col {
            width: 100% !important;
            max-width: 100% !important;
            margin: 0 auto !important;
            box-sizing: border-box !important;
            grid-column: 1 / -1 !important;
        }

        /* ✅ 隐藏右侧栏空容器（避免占位） */
        #rhs {
            display: none !important;
        }

        /* 中间层容器撑满 */
        #rso, #search,
        #rso .dURPMd,
        #rso .eqAnXb,
        #rso .s6JM6d {
            width: 100% !important;
            box-sizing: border-box !important;
        }

        /* 搜索结果卡片 */
        #rso .MjjYud {
            background: ${CARD_BG} !important;
            border-radius: 10px !important;
            margin: 10px 0 !important;
            padding: 14px 18px !important;
            box-sizing: border-box !important;
            width: 100% !important;
            position: relative !important;
            overflow: hidden !important;
            cursor: pointer !important;
            transition: background 0.2s ease,
                        transform 0.2s ease,
                        box-shadow 0.2s ease !important;
        }

        /* 悬停 */
        #rso .MjjYud:hover {
            background: ${CARD_HOVER} !important;
            transform: scale(1.012) !important;
            box-shadow: 0 4px 18px rgba(0,0,0,0.10) !important;
            z-index: 5 !important;
        }

        /* 扫光 */
        #rso .MjjYud::before {
            content: '' !important;
            position: absolute !important;
            top: 0 !important;
            left: -100% !important;
            width: 100% !important;
            height: 100% !important;
            background: linear-gradient(
                120deg,
                transparent 0%,
                rgba(0,255,255,0.15) 30%,
                rgba(138,43,226,0.12) 60%,
                transparent 100%
            ) !important;
            pointer-events: none !important;
            z-index: 1 !important;
            transition: left 1.2s ease !important;
        }
        #rso .MjjYud:hover::before {
            left: 100% !important;
        }

        /* 内容层级高于扫光 */
        #rso .MjjYud > * {
            position: relative !important;
            z-index: 2 !important;
        }

        /* 响应式 */
        @media (max-width: 768px) {
            #rcnt {
                padding: 0 10px !important;
            }
        }
    `;

    function injectStyle() {
        if (document.getElementById('__gs_beautify__')) return;
        const el = document.createElement('style');
        el.id = '__gs_beautify__';
        el.textContent = CSS;
        (document.head || document.documentElement).appendChild(el);
        console.log('[Google美化 v7] 样式注入成功');
    }

    function bindClick() {
        if (window.__gsClickBound) return;
        window.__gsClickBound = true;
        document.addEventListener('click', function (e) {
            if (e.target.closest('a, button, input, select, textarea')) return;
            const card = e.target.closest('#rso .MjjYud');
            if (!card) return;
            const link =
                card.querySelector('.yuRUbf a') ||
                card.querySelector('a[jsname] h3')?.closest('a') ||
                card.querySelector('h3 a') ||
                card.querySelector('a[href^="http"]');
            if (!link) return;
            const href = link.href;
            if (!href || href.includes('google.com/search')) return;
            e.preventDefault();
            e.stopPropagation();
            window.open(href, '_blank', 'noopener,noreferrer');
        }, true);
    }

    function init() {
        injectStyle();
        bindClick();
    }

    if (document.head) {
        injectStyle();
    } else {
        const watcher = new MutationObserver(function () {
            if (document.head) {
                watcher.disconnect();
                injectStyle();
            }
        });
        watcher.observe(document.documentElement, { childList: true });
    }

    if (document.readyState === 'loading') {
        document.addEventListener('DOMContentLoaded', init);
    } else {
        init();
    }

    let lastUrl = location.href;
    new MutationObserver(function () {
        if (location.href !== lastUrl) {
            lastUrl = location.href;
            setTimeout(init, 700);
        }
    }).observe(document.documentElement, { subtree: true, childList: true });

    window.addEventListener('popstate', () => setTimeout(init, 700));

})();