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<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Aurora Archive Arena</title>
    <style>
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        body {
            font-family: 'Georgia', serif;
            background: #0a0a0a;
            color: #fff;
            overflow: hidden;
            display: flex;
            justify-content: center;
            align-items: center;
            height: 100vh;
        }

        #gameContainer {
            position: relative;
            width: 100%;
            max-width: 1200px;
            height: 100vh;
            max-height: 800px;
        }

        #gameCanvas {
            border: 3px solid #4a5568;
            background: #1a1a2e;
            display: block;
            width: 100%;
            height: 100%;
            box-shadow: 0 0 40px rgba(138, 43, 226, 0.5);
        }

        .aurora-overlay {
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 40%;
            pointer-events: none;
            background: linear-gradient(180deg, 
                rgba(0, 255, 200, 0.3) 0%,
                rgba(138, 43, 226, 0.3) 33%,
                rgba(0, 150, 255, 0.3) 66%,
                transparent 100%);
            opacity: 0.6;
            animation: aurora-flow 8s ease-in-out infinite;
            z-index: 1;
        }

        @keyframes aurora-flow {
            0%, 100% {
                background: linear-gradient(180deg, 
                    rgba(0, 255, 200, 0.3) 0%,
                    rgba(138, 43, 226, 0.3) 33%,
                    rgba(0, 150, 255, 0.3) 66%,
                    transparent 100%);
            }
            33% {
                background: linear-gradient(180deg, 
                    rgba(138, 43, 226, 0.3) 0%,
                    rgba(0, 150, 255, 0.3) 33%,
                    rgba(255, 100, 200, 0.3) 66%,
                    transparent 100%);
            }
            66% {
                background: linear-gradient(180deg, 
                    rgba(0, 150, 255, 0.3) 0%,
                    rgba(255, 100, 200, 0.3) 33%,
                    rgba(0, 255, 200, 0.3) 66%,
                    transparent 100%);
            }
        }

        #ui {
            position: absolute;
            bottom: 20px;
            left: 50%;
            transform: translateX(-50%);
            display: flex;
            gap: 10px;
            z-index: 10;
            background: rgba(0, 0, 0, 0.8);
            padding: 15px;
            border-radius: 10px;
            border: 2px solid #8a2be2;
        }

        .spell-btn {
            padding: 12px 20px;
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            border: 2px solid #fff;
            color: #fff;
            font-size: 14px;
            font-weight: bold;
            cursor: pointer;
            border-radius: 8px;
            transition: all 0.3s;
            text-transform: uppercase;
            letter-spacing: 1px;
        }

        .spell-btn:hover {
            transform: scale(1.05);
            box-shadow: 0 0 20px rgba(138, 43, 226, 0.8);
        }

        .spell-btn:active {
            transform: scale(0.95);
        }

        .spell-btn.ice { background: linear-gradient(135deg, #00d4ff 0%, #0066ff 100%); }
        .spell-btn.fire { background: linear-gradient(135deg, #ff6b6b 0%, #ff3d00 100%); }
        .spell-btn.wind { background: linear-gradient(135deg, #a8e6cf 0%, #3d9970 100%); }
        .spell-btn.light { background: linear-gradient(135deg, #fffacd 0%, #ffd700 100%); color: #333; }
        .spell-btn.earth { background: linear-gradient(135deg, #8b4513 0%, #654321 100%); }
        .spell-btn.shadow { background: linear-gradient(135deg, #4a4a4a 0%, #1a1a1a 100%); }

        #auroraInfo {
            position: absolute;
            top: 20px;
            left: 50%;
            transform: translateX(-50%);
            background: rgba(0, 0, 0, 0.9);
            padding: 15px 30px;
            border-radius: 10px;
            border: 2px solid #8a2be2;
            text-align: center;
            z-index: 10;
            min-width: 300px;
        }

        #auroraInfo h3 {
            color: #8a2be2;
            margin-bottom: 10px;
            font-size: 18px;
            text-transform: uppercase;
            letter-spacing: 2px;
        }

        #battleLog {
            position: absolute;
            top: 100px;
            right: 20px;
            width: 250px;
            max-height: 300px;
            overflow-y: auto;
            background: rgba(0, 0, 0, 0.9);
            padding: 15px;
            border-radius: 10px;
            border: 2px solid #667eea;
            z-index: 10;
            font-size: 12px;
            line-height: 1.6;
        }

        #battleLog::-webkit-scrollbar {
            width: 8px;
        }

        #battleLog::-webkit-scrollbar-track {
            background: #1a1a2e;
        }

        #battleLog::-webkit-scrollbar-thumb {
            background: #667eea;
            border-radius: 4px;
        }

        .log-entry {
            margin-bottom: 8px;
            padding: 5px;
            border-left: 3px solid #8a2be2;
            padding-left: 8px;
        }

        .log-player { border-left-color: #00d4ff; }
        .log-enemy { border-left-color: #ff3d00; }
        .log-aurora { border-left-color: #ffd700; background: rgba(255, 215, 0, 0.1); }

        #startScreen, #gameOverScreen {
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: rgba(0, 0, 0, 0.95);
            display: flex;
            flex-direction: column;
            justify-content: center;
            align-items: center;
            z-index: 100;
        }

        #startScreen h1, #gameOverScreen h1 {
            font-size: 48px;
            margin-bottom: 20px;
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        #startScreen p, #gameOverScreen p {
            font-size: 18px;
            margin-bottom: 30px;
            max-width: 600px;
            text-align: center;
            line-height: 1.6;
        }

        .start-btn {
            padding: 15px 40px;
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            border: 3px solid #fff;
            color: #fff;
            font-size: 20px;
            font-weight: bold;
            cursor: pointer;
            border-radius: 10px;
            transition: all 0.3s;
            text-transform: uppercase;
            letter-spacing: 2px;
        }

        .start-btn:hover {
            transform: scale(1.1);
            box-shadow: 0 0 30px rgba(138, 43, 226, 1);
        }

        .hidden {
            display: none !important;
        }
    </style>
</head>
<body>
    <div id="gameContainer">
        <div class="aurora-overlay"></div>
        <canvas id="gameCanvas" width="1200" height="800"></canvas>
        
        <div id="startScreen">
            <h1>⚔️ Aurora Archive Arena ⚔️</h1>
            <p>Battle in a mystical library where northern lights transform magic itself. Ice becomes fire, wind becomes light—adapt your strategy as the aurora shifts!</p>
            <button class="start-btn" onclick="startGame()">Enter the Archive</button>
        </div>

        <div id="gameOverScreen" class="hidden">
            <h1 id="gameOverTitle">Victory!</h1>
            <p id="gameOverText">The aurora fades as peace returns to the Archive...</p>
            <button class="start-btn" onclick="resetGame()">Battle Again</button>
        </div>

        <div id="auroraInfo" class="hidden">
            <h3>🌌 Aurora Shift 🌌</h3>
            <div id="transformations"></div>
        </div>

        <div id="battleLog" class="hidden">
            <strong style="color: #667eea; display: block; margin-bottom: 10px;">📜 Battle Log</strong>
        </div>

        <div id="ui" class="hidden">
            <button class="spell-btn ice" onclick="castSpell('ice')">❄️ Ice</button>
            <button class="spell-btn fire" onclick="castSpell('fire')">🔥 Fire</button>
            <button class="spell-btn wind" onclick="castSpell('wind')">💨 Wind</button>
            <button class="spell-btn light" onclick="castSpell('light')">✨ Light</button>
            <button class="spell-btn earth" onclick="castSpell('earth')">🪨 Earth</button>
            <button class="spell-btn shadow" onclick="castSpell('shadow')">🌑 Shadow</button>
        </div>
    </div>

    <script>
        const canvas = document.getElementById('gameCanvas');
        const ctx = canvas.getContext('2d');

        // Game state
        let gameActive = false;
        let player = { hp: 100, maxHp: 100, x: 200, y: 500 };
        let enemy = { hp: 100, maxHp: 100, x: 1000, y: 500 };
        let auroraTransforms = {};
        let turnCount = 0;
        let particleEffects = [];
        let books = [];

        // Spell data
        const spells = {
            ice: { damage: 20, color: '#00d4ff', name: 'Ice' },
            fire: { damage: 25, color: '#ff3d00', name: 'Fire' },
            wind: { damage: 15, color: '#3d9970', name: 'Wind' },
            light: { damage: 22, color: '#ffd700', name: 'Light' },
            earth: { damage: 18, color: '#8b4513', name: 'Earth' },
            shadow: { damage: 23, color: '#4a4a4a', name: 'Shadow' }
        };

        const spellTypes = Object.keys(spells);

        // Initialize books
        function initBooks() {
            for (let i = 0; i < 20; i++) {
                books.push({
                    x: Math.random() * canvas.width,
                    y: Math.random() * 200 + 50,
                    width: 30 + Math.random() * 20,
                    height: 40 + Math.random() * 20,
                    color: `hsl(${Math.random() * 360}, 50%, 40%)`
                });
            }
        }

        // Generate aurora transformations
        function generateAuroraShift() {
            auroraTransforms = {};
            const shuffled = [...spellTypes].sort(() => Math.random() - 0.5);
            
            spellTypes.forEach((spell, i) => {
                let target = shuffled[i];
                while (target === spell) {
                    target = spellTypes[Math.floor(Math.random() * spellTypes.length)];
                }
                auroraTransforms[spell] = target;
            });

            updateAuroraDisplay();
            addLog(`✨ The aurora shifts! Magic transforms...`, 'aurora');
        }

        function updateAuroraDisplay() {
            const transformDiv = document.getElementById('transformations');
            transformDiv.innerHTML = '';
            
            for (let [from, to] of Object.entries(auroraTransforms)) {
                const div = document.createElement('div');
                div.style.margin = '5px 0';
                div.innerHTML = `${spells[from].name} → ${spells[to].name}`;
                div.style.color = spells[to].color;
                transformDiv.appendChild(div);
            }
        }

        function drawBackground() {
            // Library background
            ctx.fillStyle = '#1a1a2e';
            ctx.fillRect(0, 0, canvas.width, canvas.height);

            // Bookshelves
            ctx.fillStyle = '#2d2d44';
            ctx.fillRect(0, 0, canvas.width, 250);
            ctx.fillRect(0, 0, 150, canvas.height);
            ctx.fillRect(canvas.width - 150, 0, 150, canvas.height);

            // Books
            books.forEach(book => {
                ctx.fillStyle = book.color;
                ctx.fillRect(book.x, book.y, book.width, book.height);
                ctx.strokeStyle = '#000';
                ctx.lineWidth = 2;
                ctx.strokeRect(book.x, book.y, book.width, book.height);
            });

            // Floor
            ctx.fillStyle = '#16213e';
            ctx.fillRect(0, 650, canvas.width, 150);
            
            // Floor pattern
            ctx.strokeStyle = '#0f3460';
            ctx.lineWidth = 2;
            for (let i = 0; i < canvas.width; i += 50) {
                ctx.beginPath();
                ctx.moveTo(i, 650);
                ctx.lineTo(i, 800);
                ctx.stroke();
            }
        }

        function drawCharacter(char, isPlayer) {
            // Body
            ctx.fillStyle = isPlayer ? '#667eea' : '#e74c3c';
            ctx.beginPath();
            ctx.arc(char.x, char.y, 40, 0, Math.PI * 2);
            ctx.fill();

            // Robe
            ctx.fillStyle = isPlayer ? '#764ba2' : '#c0392b';
            ctx.beginPath();
            ctx.moveTo(char.x - 40, char.y + 20);
            ctx.lineTo(char.x - 30, char.y + 100);
            ctx.lineTo(char.x + 30, char.y + 100);
            ctx.lineTo(char.x + 40, char.y + 20);
            ctx.closePath();
            ctx.fill();

            // Eyes
            ctx.fillStyle = '#fff';
            ctx.beginPath();
            ctx.arc(char.x - 15, char.y - 5, 8, 0, Math.PI * 2);
            ctx.arc(char.x + 15, char.y - 5, 8, 0, Math.PI * 2);
            ctx.fill();

            ctx.fillStyle = '#000';
            ctx.beginPath();
            ctx.arc(char.x - 15, char.y - 5, 4, 0, Math.PI * 2);
            ctx.arc(char.x + 15, char.y - 5, 4, 0, Math.PI * 2);
            ctx.fill();

            // Hat
            ctx.fillStyle = isPlayer ? '#4c3f91' : '#8b0000';
            ctx.beginPath();
            ctx.moveTo(char.x - 35, char.y - 40);
            ctx.lineTo(char.x, char.y - 80);
            ctx.lineTo(char.x + 35, char.y - 40);
            ctx.closePath();
            ctx.fill();

            // Hat brim
            ctx.fillRect(char.x - 45, char.y - 40, 90, 8);

            // Health bar
            const barWidth = 100;
            const barHeight = 10;
            const barX = char.x - barWidth / 2;
            const barY = char.y - 120;

            ctx.fillStyle = '#000';
            ctx.fillRect(barX, barY, barWidth, barHeight);

            const hpPercent = char.hp / char.maxHp;
            ctx.fillStyle = hpPercent > 0.5 ? '#00ff00' : hpPercent > 0.25 ? '#ffff00' : '#ff0000';
            ctx.fillRect(barX, barY, barWidth * hpPercent, barHeight);

            ctx.strokeStyle = '#fff';
            ctx.lineWidth = 2;
            ctx.strokeRect(barX, barY, barWidth, barHeight);

            // HP text
            ctx.fillStyle = '#fff';
            ctx.font = 'bold 14px Georgia';
            ctx.textAlign = 'center';
            ctx.fillText(`${Math.max(0, Math.floor(char.hp))} HP`, char.x, barY - 5);
        }

        function createParticle(x, y, color, size = 5) {
            return {
                x, y, color, size,
                vx: (Math.random() - 0.5) * 10,
                vy: (Math.random() - 0.5) * 10,
                life: 1,
                decay: 0.02
            };
        }

        function updateParticles() {
            particleEffects = particleEffects.filter(p => {
                p.x += p.vx;
                p.y += p.vy;
                p.life -= p.decay;
                
                ctx.globalAlpha = p.life;
                ctx.fillStyle = p.color;
                ctx.beginPath();
                ctx.arc(p.x, p.y, p.size, 0, Math.PI * 2);
                ctx.fill();
                
                return p.life > 0;
            });
            ctx.globalAlpha = 1;
        }

        function castSpell(spellType) {
            if (!gameActive) return;

            const originalSpell = spellType;
            const transformedSpell = auroraTransforms[spellType];
            const spell = spells[transformedSpell];

            // Create spell particles
            for (let i = 0; i < 20; i++) {
                particleEffects.push(createParticle(player.x, player.y, spell.color, 8));
            }

            // Damage enemy
            enemy.hp -= spell.damage;
            addLog(`You cast ${spells[originalSpell].name}! Aurora transforms it to ${spell.name}! ${spell.damage} damage!`, 'player');

            // Enemy turn
            setTimeout(() => {
                if (enemy.hp > 0) {
                    enemyTurn();
                } else {
                    endGame(true);
                }
            }, 1000);

            turnCount++;
            if (turnCount % 3 === 0) {
                setTimeout(generateAuroraShift, 1500);
            }
        }

        function enemyTurn() {
            const randomSpell = spellTypes[Math.floor(Math.random() * spellTypes.length)];
            const originalSpell = randomSpell;
            const transformedSpell = auroraTransforms[randomSpell];
            const spell = spells[transformedSpell];

            // Create spell particles
            for (let i = 0; i < 20; i++) {
                particleEffects.push(createParticle(enemy.x, enemy.y, spell.color, 8));
            }

            player.hp -= spell.damage;
            addLog(`Enemy casts ${spells[originalSpell].name}! Transforms to ${spell.name}! ${spell.damage} damage!`, 'enemy');

            if (player.hp <= 0) {
                endGame(false);
            }
        }

        function addLog(text, type = '') {
            const log = document.getElementById('battleLog');
            const entry = document.createElement('div');
            entry.className = `log-entry log-${type}`;
            entry.textContent = text;
            log.insertBefore(entry, log.firstChild);

            // Keep only last 15 entries
            while (log.children.length > 16) {
                log.removeChild(log.lastChild);
            }
        }

        function gameLoop() {
            if (!gameActive) return;

            drawBackground();
            drawCharacter(player, true);
            drawCharacter(enemy, false);
            updateParticles();

            requestAnimationFrame(gameLoop);
        }

        function startGame() {
            document.getElementById('startScreen').classList.add('hidden');
            document.getElementById('ui').classList.remove('hidden');
            document.getElementById('auroraInfo').classList.remove('hidden');
            document.getElementById('battleLog').classList.remove('hidden');

            player.hp = player.maxHp;
            enemy.hp = enemy.maxHp;
            gameActive = true;
            turnCount = 0;
            particleEffects = [];

            initBooks();
            generateAuroraShift();
            addLog('Battle begins! The aurora illuminates the archive...', 'aurora');
            gameLoop();
        }

        function endGame(playerWon) {
            gameActive = false;
            const screen = document.getElementById('gameOverScreen');
            const title = document.getElementById('gameOverTitle');
            const text = document.getElementById('gameOverText');

            if (playerWon) {
                title.textContent = '🎉 Victory! 🎉';
                text.textContent = 'The enemy mage falls! The archive is safe, and the aurora dances in celebration!';
            } else {
                title.textContent = '💀 Defeat 💀';
                text.textContent = 'The aurora dims as you fall... But knowledge endures. Try again, brave mage!';
            }

            screen.classList.remove('hidden');
        }

        function resetGame() {
            document.getElementById('gameOverScreen').classList.add('hidden');
            document.getElementById('battleLog').innerHTML = '<strong style="color: #667eea; display: block; margin-bottom: 10px;">📜 Battle Log</strong>';
            startGame();
        }
    </script>
</body>
</html>