<!DOCTYPE html>
<html lang="zh">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>EPG Viewer - 電視節目查看器</title>
    <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/font-awesome/6.0.0/css/all.min.css">
    <style>
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        body {
            font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            color: #1a1a1a;
            min-height: 100vh;
            padding: 20px;
        }

        .header {
            text-align: center;
            margin-bottom: 30px;
        }

        .header h1 {
            color: white;
            font-size: 2.5rem;
            font-weight: 700;
            margin-bottom: 10px;
            text-shadow: 0 2px 4px rgba(0,0,0,0.3);
        }

        .header p {
            color: rgba(255,255,255,0.9);
            font-size: 1.1rem;
            margin-bottom: 15px;
        }

        .small-links {
            display: flex;
            justify-content: center;
            align-items: center;
            gap: 20px;
            flex-wrap: wrap;
            margin-top: 15px;
        }

        .small-links a {
            color: rgba(255,255,255,0.8);
            text-decoration: none;
            font-size: 14px;
            padding: 6px 12px;
            border: 1px solid rgba(255,255,255,0.3);
            border-radius: 6px;
            transition: all 0.3s ease;
            backdrop-filter: blur(10px);
            background: rgba(255,255,255,0.1);
        }

        .small-links a:hover {
            color: white;
            border-color: rgba(255,255,255,0.6);
            background: rgba(255,255,255,0.2);
            transform: translateY(-2px);
            box-shadow: 0 4px 12px rgba(0,0,0,0.2);
        }

        .controls {
            background: rgba(255,255,255,0.95);
            backdrop-filter: blur(10px);
            border-radius: 16px;
            padding: 20px;
            margin-bottom: 20px;
            box-shadow: 0 8px 32px rgba(0,0,0,0.1);
            max-width: 1200px;
            margin-left: auto;
            margin-right: auto;
        }

        .control-row {
            display: flex;
            gap: 15px;
            align-items: center;
            margin-bottom: 15px;
            flex-wrap: wrap;
        }

        .control-row:last-child {
            margin-bottom: 0;
        }

        .input-group {
            display: flex;
            align-items: center;
            gap: 10px;
            flex: 1;
            min-width: 200px;
        }

        .input-group label {
            font-weight: 600;
            color: #374151;
            white-space: nowrap;
        }

        .input-group i {
            color: #6b7280;
        }

        input, select, button {
            padding: 10px 15px;
            border: 2px solid #e5e7eb;
            border-radius: 8px;
            font-size: 14px;
            transition: all 0.3s ease;
        }

        input:focus, select:focus {
            outline: none;
            border-color: #3b82f6;
            box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
        }

        #epgUrl {
            flex: 1;
            min-width: 300px;
        }

        #channelSearch {
            flex: 1;
            min-width: 200px;
        }

        #dateSelect {
            min-width: 150px;
        }

        .date-nav {
            display: flex;
            align-items: center;
            gap: 5px;
        }

        .date-nav-btn {
            background: #f8fafc;
            border: 1px solid #e2e8f0;
            color: #64748b;
            padding: 8px 10px;
            border-radius: 6px;
            cursor: pointer;
            font-size: 12px;
            transition: all 0.2s ease;
        }

        .date-nav-btn:hover {
            background: #e2e8f0;
            color: #475569;
        }

        .date-nav-btn:disabled {
            opacity: 0.5;
            cursor: not-allowed;
        }

        .date-today-btn {
            background: linear-gradient(135deg, #10b981, #059669);
            color: white;
            border: none;
            padding: 8px 12px;
            border-radius: 6px;
            cursor: pointer;
            font-size: 12px;
            font-weight: 600;
            transition: all 0.2s ease;
        }

        .date-today-btn:hover {
            background: linear-gradient(135deg, #059669, #047857);
            transform: translateY(-1px);
        }

        #loadBtn {
            background: linear-gradient(135deg, #3b82f6, #1d4ed8);
            color: white;
            border: none;
            font-weight: 600;
            cursor: pointer;
            display: flex;
            align-items: center;
            gap: 8px;
            padding: 10px 20px;
        }

        #loadBtn:hover {
            background: linear-gradient(135deg, #2563eb, #1e40af);
            transform: translateY(-2px);
            box-shadow: 0 4px 12px rgba(59, 130, 246, 0.4);
        }

        #loadBtn:disabled {
            background: #9ca3af;
            cursor: not-allowed;
            transform: none;
            box-shadow: none;
        }

        .timezone-info {
            background: #f3f4f6;
            padding: 8px 12px;
            border-radius: 6px;
            font-size: 13px;
            color: #6b7280;
            display: flex;
            align-items: center;
            gap: 5px;
        }

        .main-content {
            max-width: 1200px;
            margin: 0 auto;
            display: grid;
            grid-template-columns: 320px 1fr;
            gap: 20px;
            height: 70vh;
        }

        .panel {
            background: rgba(255,255,255,0.95);
            backdrop-filter: blur(10px);
            border-radius: 16px;
            box-shadow: 0 8px 32px rgba(0,0,0,0.1);
            overflow: hidden;
            display: flex;
            flex-direction: column;
        }

        .panel-header {
            background: linear-gradient(135deg, #f8fafc, #e2e8f0);
            padding: 15px 20px;
            border-bottom: 1px solid #e5e7eb;
            font-weight: 600;
            color: #374151;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .panel-content {
            flex: 1;
            overflow-y: auto;
            padding: 10px;
            scroll-behavior: smooth;
        }

        .panel-content::-webkit-scrollbar {
            width: 6px;
        }

        .panel-content::-webkit-scrollbar-track {
            background: #f1f5f9;
        }

        .panel-content::-webkit-scrollbar-thumb {
            background: #cbd5e1;
            border-radius: 3px;
        }

        .panel-content::-webkit-scrollbar-thumb:hover {
            background: #94a3b8;
        }

        .channel-item {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 12px 15px;
            margin: 5px;
            border-radius: 10px;
            cursor: pointer;
            transition: all 0.3s ease;
            border: 2px solid transparent;
        }

        .channel-item:hover {
            background: linear-gradient(135deg, #eff6ff, #dbeafe);
            transform: translateX(5px);
            box-shadow: 0 2px 8px rgba(59, 130, 246, 0.2);
        }

        .channel-item.selected {
            background: linear-gradient(135deg, #3b82f6, #1d4ed8);
            color: white;
            border-color: #1e40af;
        }

        .channel-logo {
            width: 32px;
            height: 32px;
            border-radius: 6px;
            object-fit: cover;
            flex-shrink: 0;
            background: #f3f4f6;
        }

        .channel-info {
            flex: 1;
            min-width: 0;
        }

        .channel-id {
            font-size: 12px;
            opacity: 0.7;
            font-weight: 500;
        }

        .channel-name {
            font-weight: 600;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }

        .program-card {
            background: white;
            border: 1px solid #e5e7eb;
            border-radius: 12px;
            margin-bottom: 10px;
            padding: 15px;
            transition: all 0.3s ease;
            position: relative;
            overflow: hidden;
        }

        .program-card::before {
            content: '';
            position: absolute;
            left: 0;
            top: 0;
            bottom: 0;
            width: 4px;
            background: #e5e7eb;
            transition: all 0.3s ease;
        }

        .program-card:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 25px rgba(0,0,0,0.1);
            border-color: #3b82f6;
        }

        .program-card.live {
            border-color: #22c55e;
            background: linear-gradient(135deg, #f0fdf4, #dcfce7);
            box-shadow: 0 0 20px rgba(34, 197, 94, 0.2);
            transform: scale(1.02);
        }

        .program-card.live::before {
            background: #22c55e;
            width: 6px;
        }

        .program-card.past {
            opacity: 0.6;
        }

        .program-card.past::before {
            background: #9ca3af;
        }

        .program-header {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-bottom: 8px;
        }

        .program-time {
            background: #f8fafc;
            padding: 4px 8px;
            border-radius: 6px;
            font-size: 13px;
            font-weight: 600;
            color: #475569;
            white-space: nowrap;
        }

        .program-card.live .program-time {
            background: #22c55e;
            color: white;
            animation: pulse 2s infinite;
        }

        @keyframes pulse {
            0%, 100% {
                opacity: 1;
            }
            50% {
                opacity: 0.8;
            }
        }

        .program-status {
            font-size: 11px;
            padding: 2px 6px;
            border-radius: 4px;
            font-weight: 600;
            text-transform: uppercase;
        }

        .status-live {
            background: #22c55e;
            color: white;
            animation: pulse 2s infinite;
        }

        .status-upcoming {
            background: #3b82f6;
            color: white;
        }

        .status-ended {
            background: #6b7280;
            color: white;
        }

        .program-title {
            font-weight: 700;
            font-size: 16px;
            color: #1f2937;
            margin-bottom: 6px;
            line-height: 1.4;
        }

        .program-desc {
            color: #6b7280;
            font-size: 14px;
            line-height: 1.5;
            margin-top: 8px;
        }

        .empty-state {
            text-align: center;
            padding: 40px 20px;
            color: #6b7280;
        }

        .empty-state i {
            font-size: 3rem;
            margin-bottom: 15px;
            opacity: 0.5;
        }

        .empty-state h3 {
            margin-bottom: 8px;
            color: #374151;
        }

        .loading {
            display: flex;
            align-items: center;
            justify-content: center;
            padding: 40px;
            color: #6b7280;
        }

        .loading i {
            animation: spin 1s linear infinite;
            margin-right: 10px;
        }

        @keyframes spin {
            from { transform: rotate(0deg); }
            to { transform: rotate(360deg); }
        }

        .error-message {
            background: #fef2f2;
            border: 1px solid #fecaca;
            color: #dc2626;
            padding: 15px;
            border-radius: 8px;
            margin: 10px;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        @media (max-width: 768px) {
            body {
                padding: 10px;
            }

            .header h1 {
                font-size: 2rem;
            }

            .small-links {
                gap: 10px;
            }

            .small-links a {
                font-size: 12px;
                padding: 4px 8px;
            }

            .control-row {
                flex-direction: column;
                align-items: stretch;
            }

            .input-group {
                min-width: unset;
            }

            .main-content {
                grid-template-columns: 1fr;
                height: auto;
                gap: 15px;
            }

            .panel {
                height: 400px;
            }

            .date-nav {
                justify-content: center;
                margin-top: 10px;
            }
        }
    </style>
</head>
<body>
    <div class="header">
        <h1><i class="fas fa-tv"></i> EPG Viewer</h1>
        <p>電視節目查看器 -簡潔、美觀、實用</p>
        <div class="small-links">
            <a href="https://github.com/YanG-1989" target="_blank">GitHub</a>
            <a href="https://t.me/Y_anGGGGGG" target="_blank">Telegram</a>
            <a href="https://yang-1989.eu.org" target="_blank">個人主頁</a>
            <a href="https://yang-1989.eu.org/Conversion.php" target="_blank">格式轉換</a>
            <a href="https://live.yang-1989.eu.org" target="_blank">直播錄入</a>
            <a href="http://i.iill.top:13043" target="_blank">影視搜索</a>
        </div>
    </div>

    <div class="controls">
        <div class="control-row">
            <div class="input-group">
                <label><i class="fas fa-link"></i> EPG地址:</label>
                <input type="text" id="epgUrl" value="" placeholder="请輸入EPG數據源地址">
            </div>
            <button id="loadBtn">
                <i class="fas fa-download"></i>
                <span>加載數據</span>
            </button>
        </div>
        
        <div class="control-row">
            <div class="input-group">
                <label><i class="fas fa-search"></i> 搜索:</label>
                <input type="text" id="channelSearch" placeholder="搜索頻道名稱或ID...">
            </div>

            <div class="input-group">
                <label><i class="fas fa-list"></i> 節目搜索:</label>
                <input type="text" id="programSearch" placeholder="搜索節目標題或描述...">
            </div>
            
            <div class="input-group">
                <label><i class="fas fa-globe"></i> 時區:</label>
                <select id="timezoneSelect"></select>
            </div>
            
            <div class="timezone-info">
                <i class="fas fa-clock"></i>
                <span id="tzLabel">本地時區</span>
            </div>
        </div>

        <div class="control-row">
            <div class="input-group">
                <label><i class="fas fa-calendar-alt"></i> 日期:</label>
                <input type="date" id="dateSelect">
            </div>
            
            <div class="date-nav">
                <button class="date-nav-btn" id="prevDayBtn" title="前一天">
                    <i class="fas fa-chevron-left"></i>
                </button>
                <button class="date-today-btn" id="todayBtn" title="今天">
                    今天
                </button>
                <button class="date-nav-btn" id="nextDayBtn" title="后一天">
                    <i class="fas fa-chevron-right"></i>
                </button>
            </div>
        </div>
    </div>

    <div class="main-content">
        <div class="panel">
            <div class="panel-header">
                <i class="fas fa-list"></i>
                <span>頻道列表</span>
                <span id="channelCount" style="margin-left: auto; font-size: 12px; opacity: 0.7;"></span>
            </div>
            <div class="panel-content" id="channelList">
                <div class="empty-state">
                    <i class="fas fa-tv"></i>
                    <h3>暫無頻道數據</h3>
                    <p>請先加載EPG數據</p>
                </div>
            </div>
        </div>

        <div class="panel">
            <div class="panel-header">
                <i class="fas fa-calendar-day"></i>
                <span id="programDateLabel">今日節目</span>
                <span id="selectedChannelName" style="margin-left: 10px; font-weight: 400; opacity: 0.7;"></span>
                <span id="programCount" style="margin-left: auto; font-size: 12px; opacity: 0.7;"></span>
            </div>
            <div class="panel-content" id="programList">
                <div class="empty-state">
                    <i class="fas fa-mouse-pointer"></i>
                    <h3>請選擇頻道</h3>
                    <p>點擊左側頻道查看節目單</p>
                </div>
            </div>
        </div>
    </div>

    <script>
        let epgData = { channels: [], programs: [] };
        let selectedChannel = null;
        let selectedDate = new Date();
        let updateTimer = null;

        const loadBtn = document.getElementById("loadBtn");
        const tzSelect = document.getElementById("timezoneSelect");
        const tzLabel = document.getElementById("tzLabel");
        const channelSearch = document.getElementById("channelSearch");
        const programSearch = document.getElementById("programSearch");
        const channelList = document.getElementById("channelList");
        const programList = document.getElementById("programList");
        const channelCount = document.getElementById("channelCount");
        const programCount = document.getElementById("programCount");
        const selectedChannelName = document.getElementById("selectedChannelName");
        const dateSelect = document.getElementById("dateSelect");
        const prevDayBtn = document.getElementById("prevDayBtn");
        const nextDayBtn = document.getElementById("nextDayBtn");
        const todayBtn = document.getElementById("todayBtn");
        const programDateLabel = document.getElementById("programDateLabel");

        const tzMapCN = {
            "": "本地時區",
            "UTC": "世界協調時 (UTC)",
            "Asia/Shanghai": "中國標準時間 (CST)",
            "Asia/Tokyo": "日本標準時間 (JST)",
            "Europe/London": "格林威治時間 (GMT)",
            "America/New_York": "美國東部時間 (EST/EDT)",
            "America/Los_Angeles": "美國西部時間 (PST/PDT)"
        };

        const tzOptions = ["", "UTC", "Asia/Shanghai", "Asia/Tokyo", "Europe/London", "America/New_York", "America/Los_Angeles"];

        function initTimezoneSelect() {
            tzSelect.innerHTML = tzOptions.map(tz => 
                `<option value="${tz}">${tzMapCN[tz] || tz}</option>`
            ).join("");
        }

        function initDateSelect() {
            const today = new Date();
            selectedDate = today;
            dateSelect.value = formatDateForInput(today);
            updateDateLabel();
        }

        function formatDateForInput(date) {
            return date.toISOString().split('T')[0];
        }

        function updateDateLabel() {
            const today = new Date();
            const isToday = selectedDate.toDateString() === today.toDateString();
            const isYesterday = selectedDate.toDateString() === new Date(today.getTime() - 24 * 60 * 60 * 1000).toDateString();
            const isTomorrow = selectedDate.toDateString() === new Date(today.getTime() + 24 * 60 * 60 * 1000).toDateString();
            
            let label;
            if (isToday) {
                label = "今日節目";
            } else if (isYesterday) {
                label = "昨日節目";
            } else if (isTomorrow) {
                label = "明日節目";
            } else {
                label = selectedDate.toLocaleDateString('zh-CN', {
                    month: 'long',
                    day: 'numeric',
                    weekday: 'long'
                }) + "節目";
            }
            
            programDateLabel.textContent = label;
        }

        function setSelectedDate(date) {
            selectedDate = new Date(date);
            dateSelect.value = formatDateForInput(selectedDate);
            updateDateLabel();
            if (selectedChannel) {
                renderProgramList();
            }
        }

        function getTZLabel(tz) {
            try {
                const now = new Date();
                const tzDateStr = now.toLocaleString('en-US', { timeZone: tz || undefined });
                const tzDate = new Date(tzDateStr);
                
                let tzOffsetMinutes = -(tzDate - now) / 60000;
                tzOffsetMinutes = Math.round(tzOffsetMinutes);

                const sign = tzOffsetMinutes >= 0 ? "+" : "-";
                const absMinutes = Math.abs(tzOffsetMinutes);
                const hours = Math.floor(absMinutes / 60);
                const minutes = absMinutes % 60;

                const cnName = tzMapCN[tz] || tz || "本地時區";
                return `${cnName} GMT${sign}${hours}:${minutes.toString().padStart(2, '0')}`;
            } catch (e) {
                return tzMapCN[tz] || tz || "本地時區";
            }
        }

        async function loadEPG() {
            const url = document.getElementById("epgUrl").value.trim();
            if (!url) {
                showError("請輸入EPG數據源地址");
                return;
            }

            loadBtn.disabled = true;
            loadBtn.innerHTML = '<i class="fas fa-spinner fa-spin"></i> 加載中...';
            
            channelList.innerHTML = '<div class="loading"><i class="fas fa-spinner fa-spin"></i> 正在加載頻道數據...</div>';
            programList.innerHTML = '<div class="empty-state"><i class="fas fa-clock"></i><h3>數據加載中</h3><p>請稍後...</p></div>';

            try {
                const response = await fetch(`epg.php?url=${encodeURIComponent(url)}`);
                const json = await response.json();
                
                if (json.error) {
                    throw new Error(json.error);
                }
                
                epgData = json;
                selectedChannel = null;
                renderChannelList();
                programList.innerHTML = '<div class="empty-state"><i class="fas fa-mouse-pointer"></i><h3>請選擇頻道</h3><p>點擊左側頻道查看節目單</p></div>';
                
            } catch (e) {
                showError(`加載失敗: ${e.message}`);
                epgData = { channels: [], programs: [] };
                renderChannelList();
            } finally {
                loadBtn.disabled = false;
                loadBtn.innerHTML = '<i class="fas fa-download"></i> 加載數據';
            }
        }

        function showError(message) {
            channelList.innerHTML = `
                <div class="error-message">
                    <i class="fas fa-exclamation-triangle"></i>
                    <span>${message}</span>
                </div>
            `;
        }

        function renderChannelList() {
            const query = channelSearch.value.toLowerCase();
            let filtered = epgData.channels;
            
            if (query) {
                filtered = epgData.channels.filter(c => 
                    c.id.toLowerCase().includes(query) || 
                    c.name.toLowerCase().includes(query)
                );
            }

            channelCount.textContent = filtered.length ? `${filtered.length} 个頻道` : '';

            if (filtered.length === 0) {
                channelList.innerHTML = `
                    <div class="empty-state">
                        <i class="fas fa-search"></i>
                        <h3>未找到匹配的數據</h3>
                        <p>請嘗試其他關鍵詞</p>
                    </div>
                `;
                return;
            }

            const html = filtered.map(channel => `
                <div class="channel-item ${selectedChannel === channel.id ? 'selected' : ''}" 
                     onclick="selectChannel('${channel.id}', '${channel.name.replace(/'/g, '&#39;')}')">
                    ${channel.logo ? 
                        `<img src="${channel.logo}" class="channel-logo" onerror="this.style.display='none'">` : 
                        `<div class="channel-logo" style="display:flex;align-items:center;justify-content:center;background:#f3f4f6;color:#9ca3af;font-size:12px;">TV</div>`
                    }
                    <div class="channel-info">
                        <div class="channel-name">${channel.name}</div>
                        <div class="channel-id">${channel.id}</div>
                    </div>
                </div>
            `).join('');

            channelList.innerHTML = html;
        }

        function selectChannel(channelId, channelName) {
            selectedChannel = channelId;
            selectedChannelName.textContent = channelName ? `- ${channelName}` : '';
            renderChannelList();
            renderProgramList();
        }

        function parseXMLTime(xmlTime) {
            const match = xmlTime.match(/^(\d{4})(\d{2})(\d{2})(\d{2})(\d{2})(\d{2})\s*([+-]\d{4})?$/);
            if (!match) return new Date();
            
            const [, year, month, day, hour, minute, second, tzOffset] = match;
            let date = new Date(Date.UTC(year, month - 1, day, hour, minute, second));
            
            if (tzOffset) {
                const sign = tzOffset[0] === '+' ? 1 : -1;
                const offsetHours = parseInt(tzOffset.slice(1, 3));
                const offsetMinutes = parseInt(tzOffset.slice(3, 5));
                date = new Date(date.getTime() - sign * (offsetHours * 3600 + offsetMinutes * 60) * 1000);
            }
            
            return date;
        }

        function formatTime(date, tz) {
            return date.toLocaleTimeString('zh-CN', {
                hour: '2-digit',
                minute: '2-digit',
                hour12: false,
                timeZone: tz || undefined
            });
        }

        function getProgramStatus(start, stop, now, isToday) {
            if (!isToday) {
                return now > stop ? 'ended' : 'upcoming';
            }
            if (now >= start && now <= stop) return 'live';
            if (now > stop) return 'ended';
            return 'upcoming';
        }

        function filterDatePrograms(programs, targetDate, tz) {
            const targetDateStr = targetDate.toLocaleDateString('zh-CN', { timeZone: tz || undefined });
            
            return programs.filter(program => {
                const startDate = parseXMLTime(program.start);
                const programDateStr = startDate.toLocaleDateString('zh-CN', { timeZone: tz || undefined });
                return programDateStr === targetDateStr;
            });
        }

        function renderProgramList() {
            const programQuery = programSearch.value.trim().toLowerCase();
            const tz = tzSelect.value || undefined;
            const now = new Date();
            const isToday = selectedDate.toDateString() === now.toDateString();
            
            let displayPrograms = [];
        
            // 逻辑切换：如果有搜索词，进行全局搜索；否则显示选中频道的节目
            if (programQuery) {
                // 全局搜索：遍历所有频道的所有节目
                displayPrograms = epgData.programs.filter(p => 
                    (p.title && p.title.toLowerCase().includes(programQuery)) ||
                    (p.desc && p.desc.toLowerCase().includes(programQuery))
                );
                selectedChannelName.textContent = `- 全局搜索: "${programQuery}"`;
            } else {
                // 常规逻辑：显示选中频道的节目
                if (!selectedChannel) {
                    programList.innerHTML = `<div class="empty-state"><i class="fas fa-mouse-pointer"></i><h3>請選擇頻道</h3><p>點擊左側頻道查看節目單</p></div>`;
                    programCount.textContent = '';
                    selectedChannelName.textContent = '';
                    return;
                }
                const channelPrograms = epgData.programs.filter(p => p.channel === selectedChannel);
                displayPrograms = filterDatePrograms(channelPrograms, selectedDate, tz);
                
                // 恢复显示频道名称
                const chan = epgData.channels.find(c => c.id === selectedChannel);
                selectedChannelName.textContent = chan ? `- ${chan.name}` : '';
            }
        
            programCount.textContent = displayPrograms.length ? `${displayPrograms.length} 個節目` : '';
        
            if (displayPrograms.length === 0) {
                programList.innerHTML = `
                    <div class="empty-state">
                        <i class="fas fa-search"></i>
                        <h3>未找到相關節目</h3>
                        <p>嘗試更換關鍵詞或檢查日期</p>
                    </div>`;
                return;
            }
        
            // 排序：全局搜索按时间倒序（新的在前），频道查看按时间正序
            displayPrograms.sort((a, b) => {
                const startA = parseXMLTime(a.start);
                const startB = parseXMLTime(b.start);
                return programQuery ? startB - startA : startA - startB;
            });
        
            const html = displayPrograms.map(program => {
                const start = parseXMLTime(program.start);
                const stop = parseXMLTime(program.stop);
                const status = getProgramStatus(start, stop, now, isToday);
                
                // 获取频道名称（全局搜索时很有用）
                const channelInfo = epgData.channels.find(c => c.id === program.channel);
                const channelName = channelInfo ? channelInfo.name : program.channel;
        
                // 高亮处理函数
                const highlight = (text) => {
                    if (!programQuery || !text) return text;
                    const regex = new RegExp(`(${programQuery.replace(/[.*+?^${}()|[\]\\]/g, '\\$&')})`, 'gi');
                    return text.replace(regex, '<mark style="background: #ffeb3b; color: #000; padding: 0 2px; border-radius: 2px;">$1</mark>');
                };
        
                const statusLabels = { 'live': '直播中', 'upcoming': '未開始', 'ended': '已結束' };
        
                return `
                    <div class="program-card ${status}" onclick="${programQuery ? `selectChannel('${program.channel}', '${channelName.replace(/'/g, "\\'")}')` : ''}" style="${programQuery ? 'cursor:pointer' : ''}">
                        <div class="program-header">
                            <div class="program-time">${formatTime(start, tz)} - ${formatTime(stop, tz)}</div>
                            <div class="program-status status-${status}">${programQuery ? channelName : statusLabels[status]}</div>
                        </div>
                        <div class="program-title">${highlight(program.title)}</div>
                        ${program.desc ? `<div class="program-desc">${highlight(program.desc)}</div>` : ''}
                        ${programQuery ? `<div style="font-size:10px; color:#3b82f6; margin-top:5px;"><i class="fas fa-calendar-alt"></i> ${start.toLocaleDateString()}</div>` : ''}
                    </div>
                `;
            }).join('');
        
            programList.innerHTML = html;
            
            if (!programQuery) {
                setTimeout(scrollToLiveProgram, 100);
            }
        }

        function scrollToLiveProgram() {
            // 只有在查看今天的节目时才自动滚动到直播中的节目
            const today = new Date();
            const isToday = selectedDate.toDateString() === today.toDateString();
            
            if (!isToday) return;
            
            const liveProgramCard = programList.querySelector('.program-card.live');
            if (liveProgramCard && programList.scrollHeight > programList.clientHeight) {
                // 计算滚动位置，让直播节目显示在可视区域的上半部分
                const containerRect = programList.getBoundingClientRect();
                const cardRect = liveProgramCard.getBoundingClientRect();
                const containerTop = containerRect.top;
                const cardTop = cardRect.top;
                const offset = cardTop - containerTop - containerRect.height * 0.2; // 显示在20%位置
                
                programList.scrollBy({
                    top: offset,
                    behavior: 'smooth'
                });
            }
        }

        function startUpdateTimer() {
            if (updateTimer) clearInterval(updateTimer);
            updateTimer = setInterval(() => {
                if (selectedChannel) {
                    renderProgramList();
                }
            }, 60000); // 每分钟更新一次
        }

        function initEventListeners() {
            loadBtn.addEventListener('click', loadEPG);
            
            tzSelect.addEventListener('change', () => {
                const tz = tzSelect.value || Intl.DateTimeFormat().resolvedOptions().timeZone;
                tzLabel.textContent = getTZLabel(tz);
                if (selectedChannel) {
                    renderProgramList();
                }
            });

            channelSearch.addEventListener('input', () => {
                renderChannelList();
            });

            programSearch.addEventListener('input', () => {
                renderProgramList();
            });

            dateSelect.addEventListener('change', () => {
                const dateValue = dateSelect.value;
                if (dateValue) {
                    setSelectedDate(new Date(dateValue + 'T12:00:00'));
                }
            });

            prevDayBtn.addEventListener('click', () => {
                const prevDate = new Date(selectedDate);
                prevDate.setDate(prevDate.getDate() - 1);
                setSelectedDate(prevDate);
            });

            nextDayBtn.addEventListener('click', () => {
                const nextDate = new Date(selectedDate);
                nextDate.setDate(nextDate.getDate() + 1);
                setSelectedDate(nextDate);
            });

            todayBtn.addEventListener('click', () => {
                setSelectedDate(new Date());
            });

            document.getElementById('epgUrl').addEventListener('keypress', (e) => {
                if (e.key === 'Enter') {
                    loadEPG();
                }
            });

            channelSearch.addEventListener('keypress', (e) => {
                if (e.key === 'Enter') {
                    renderChannelList();
                }
            });

            document.addEventListener('keydown', (e) => {
                if (document.activeElement.tagName === 'INPUT' || document.activeElement.tagName === 'SELECT') {
                    return;
                }

                switch(e.key) {
                    case 'ArrowLeft':
                        e.preventDefault();
                        prevDayBtn.click();
                        break;
                    case 'ArrowRight':
                        e.preventDefault();
                        nextDayBtn.click();
                        break;
                    case 'Home':
                        e.preventDefault();
                        todayBtn.click();
                        break;
                }
            });
        }

        function initApp() {
            initTimezoneSelect();
            initDateSelect();
            initEventListeners();
            startUpdateTimer();
            document.getElementById("epgUrl").value = "https://epg.yang-1989.eu.org/epg.xml.gz";
            
            const defaultTz = Intl.DateTimeFormat().resolvedOptions().timeZone;
            tzLabel.textContent = getTZLabel(defaultTz);
        }

        initApp();
    </script>
</body>
</html>