@import url('https://fonts.googleapis.com/css2?family=Lexend+Deca&display=swap');
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            -webkit-user-select: none;
            -moz-user-select: none;
            -ms-user-select: none;
            user-select: none;
        }

        body {
            font-family: "Lexend Deca", serif;
            background: linear-gradient(#e3f0e9 0%, #ecf0f4 100%);
            min-height: 100vh;
            height: 100vh;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            color: #333;
            overflow: hidden;
            transition: all 0.3s ease;
            position: fixed;
            width: 100%;
            top: 0;
            left: 0;
        }

        html {
            background: linear-gradient(#e3f0e9 0%, #ecf0f4 100%);
        }

        /* Dark Mode Styles */
        body.dark-mode {
            background: linear-gradient(#20413a 0%, #22252e 100%);
            color: #e5e7eb;
        }
        
        html.dark-mode {
            background: #1a1a2e;
        }

        .game-container {
            background: white;
            border-radius: 20px;
            box-shadow: 0 20px 40px rgba(0,0,0,0.1);
            padding: 20px;
            max-width: 600px;
            width: 95%;
            height: 100vh;
            max-height: 100vh;
            display: flex;
            flex-direction: column;
            overflow: hidden;
            transition: all 0.3s ease;
        }

        .dark-mode .game-container {
            background: #1e242e;
            box-shadow: 0 20px 40px rgba(0,0,0,0.3);
        }

        .header {
            text-align: center;
            margin-bottom: 10px;
            position: relative;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
        }

        .mode-selector {
            display: flex;
            background: #f3f4f6;
            border-radius: 14px;
            padding: 4px;
            margin-bottom: 8px;
            transition: all 0.3s ease;
        }

        .dark-mode .mode-selector {
            background: #323c4d;
        }

        .mode-button {
            background: transparent;
            border: none;
            padding: 8px 20px;
            border-radius: 10px;
            font-size: 0.8em;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.3s ease;
            color: #6b7280;
            font-family: "Lexend Deca", serif;
        }

        .mode-button.active {
            background: #4b9c35;
            color: white;
            box-shadow: 0 2px 8px rgba(75, 156, 53, 0.3);
        }

        .mode-button:not(.active):hover {
            color: #374151;
        }

        .dark-mode .mode-button:not(.active) {
            color: #9ca3af;
        }

        .dark-mode .mode-button:not(.active):hover {
            color: #e5e7eb;
        }

        .header-buttons {
            position: absolute;
            top: 0;
            width: 100%;
            display: flex;
            justify-content: space-between;
            align-items: center;
            pointer-events: none;
        }

        .header-buttons-left {
            display: flex;
            gap: 8px;
            pointer-events: none;
        }

        .header-buttons-right {
            display: flex;
            gap: 8px;
            pointer-events: none;
        }

        .header-button {
            background: #f3f4f6;
            border: none;
            border-radius: 10px;
            width: 40px;
            height: 40px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2em;
            font-weight: bold;
            cursor: pointer;
            transition: all 0.3s ease;
            color: #374151;
            box-shadow: 0 2px 4px rgba(0,0,0,0.1);
            pointer-events: auto;
        }

        .archive-button {
            display: none;
        }

        .dark-mode .header-button {
            background: #323c4d;
            color: #e2e8f0;
            box-shadow: 0 2px 4px rgba(0,0,0,0.2);
        }

        .header-button:hover {
            background: #e5e7eb;
            transform: scale(1.05);
        }

        .dark-mode .header-button:hover {
            background: #5a6578;
        }

        .header-content {
            display: flex;
            flex-direction: column;
            align-items: center;
        }

        .game-title {
            font-size: 2.2em;
            font-weight: bold;
            color: #000;
            margin-bottom: 5px;
            transition: color 0.3s ease;
            display:none
        }

        .dark-mode .game-title {
            color: #f7fafc;
        }

        .score-display {
            font-size: 1.6em;
            font-weight: bold;
            color: #4b9c35;
            margin-bottom: 10px;
            position: relative;
            transition: all 0.3s ease;
        }

        .daily-goal {
            font-size: 0.9em;
            color: #6b7280;
            margin-top: 8px;
            font-weight: 600;
            transition: all 0.3s ease;
            min-width: 240px;
            text-align: center;
        }

        .dark-mode .daily-goal {
            color: #9ca3af;
        }

        .goal-reached {
            color: #6acc50 !important;
        }

        .goal-progress {
            display: flex;
            gap: 8px;
            margin-top: 6px;
            transition: all 0.3s ease;
        }

        .goal-progress-section {
            flex: 1;
            background: #e5e7eb;
            height: 24px;
            border-radius: 12px;
            overflow: hidden;
            position: relative;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .dark-mode .goal-progress-section {
            background: #374151;
        }

        .goal-progress-bar {
            background: linear-gradient(90deg, #83c127, #4b9c35);
            height: 100%;
            border-radius: 12px;
            transition: width 0.5s ease;
            min-width: 2px;
            position: absolute;
            left: 0;
            top: 0;
        }

        .goal-progress-bar.letters {
            background: linear-gradient(90deg, #f59e0b, #d97706);
        }

        .goal-complete .goal-progress-bar {
            background: linear-gradient(90deg, #83c127, #4b9c35);
        }

        .goal-complete .goal-progress-bar.letters {
            background: linear-gradient(90deg, #f59e0b, #d97706);
        }

        .goal-target-text {
            color: #374151;
            font-weight: 500;
            font-size: 0.65em;
            z-index: 10;
            position: relative;
            transition: all 0.3s ease;
            text-align: center;
        }

        .dark-mode .goal-target-text {
            color: #f3f4f6;
        }

        .goal-complete .goal-target-text {
            color: white;
        }

        .score-bounce {
            animation: scoreBounce 0.6s ease-out;
        }

        @keyframes scoreBounce {
            0% { transform: scale(1); }
            30% { transform: scale(1.15); color: #54b738; }
            60% { transform: scale(1.05); color: #5bcc3c; }
            100% { transform: scale(1); color: #4b9c35; }
        }

        /* Popup Styles */
        .popup-overlay {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(0, 0, 0, 0.5);
            display: flex;
            align-items: center;
            justify-content: center;
            z-index: 10000;
            opacity: 0;
            visibility: hidden;
            transition: all 0.3s ease;
        }

        .popup-overlay.active {
            opacity: 1;
            visibility: visible;
        }

        .popup {
            background: white;
            border-radius: 20px;
            padding: 30px;
            max-width: 380px;
            width: 90%;
            max-height: 85vh;
            overflow-y: auto;
            position: relative;
            transform: scale(0.8);
            transition: all 0.3s ease;
            box-shadow: 0 20px 40px rgba(0,0,0,0.2);
        }

        .dark-mode .popup {
            background: #2d3748;
            box-shadow: 0 20px 40px rgba(0,0,0,0.4);
        }

        .popup-overlay.active .popup {
            transform: scale(1);
        }

        .popup-header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 20px;
        }

        .popup-title {
            font-size: 1.5em;
            font-weight: bold;
            color: #000;
            transition: color 0.3s ease;
        }

        .dark-mode .popup-title {
            color: #f7fafc;
        }

        .close-button {
            background: none;
            border: none;
            font-size: 1.5em;
            cursor: pointer;
            color: #6b7280;
            padding: 5px;
            border-radius: 50%;
            width: 35px;
            height: 35px;
            display: flex;
            align-items: center;
            justify-content: center;
            transition: all 0.3s ease;
        }

        .close-button:hover {
            background: #f3f4f6;
            color: #374151;
        }

        .dark-mode .close-button:hover {
            background: #5a6578;
        }

        .dark-mode .game-over-content .close-button {
            color: #9ca3af;
        }

        .dark-mode .game-over-content .close-button:hover {
            background: #5a6578;
            color: #e2e8f0;
        }

        .popup-content {
            line-height: 1.6;
            color: #374151;
            transition: color 0.3s ease;
        }

        .dark-mode .popup-content {
            color: #e2e8f0;
        }

        .popup-content h3 {
            color: #000;
            margin: 15px 0 10px 0;
            font-size: 1.1em;
            transition: color 0.3s ease;
        }

        .dark-mode .popup-content h3 {
            color: #f7fafc;
        }

        .popup-content p {
            margin-bottom: 15px;
        }

        .popup-content ul {
            margin: 10px 0 15px 20px;
        }

        .popup-content li {
            margin-bottom: 8px;
        }

        .menu-item {
            display: flex;
            align-items: center;
            padding: 15px 0;
            border-bottom: 1px solid #e5e7eb;
            cursor: pointer;
            transition: all 0.3s ease;
            text-decoration: none;
            color: #374151;
        }

        .dark-mode .menu-item {
            border-bottom: 1px solid #323c4d;
            color: #e2e8f0;
        }

        .menu-item:hover {
            background: #f9fafb;
            border-radius: 10px;
            padding-left: 10px;
            margin: 0 -10px;
        }

        .dark-mode .menu-item:hover {
            background: #323c4d;
        }

        .menu-item:last-child {
            border-bottom: none;
        }

        .menu-item-icon {
            font-size: 1.2em;
            margin-right: 15px;
            width: 24px;
            text-align: center;
        }

        .menu-item-text {
            font-weight: 500;
        }

        .game-board {
            display: grid;
            grid-template-columns: repeat(5, 1fr);
            grid-template-rows: repeat(5, 1fr);
            gap: 6px;
            border-radius: 10px;
            padding: 0px;
            margin-bottom: 20px;
            aspect-ratio: 1;
            max-width: 380px;
            width: 90%;
            margin-left: auto;
            margin-right: auto;
        }

        .grid-cell {
            background: #edf3f8;
            border-bottom: 4px solid rgba(0,0,0,.1);
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.8em;
            font-weight: bold;
            transition: all 0.1s ease;
            cursor: pointer;
            position: relative;
            aspect-ratio: 1;
            width: 100%;
            height: auto;
            will-change: transform, background-color;
        }

        .dark-mode .grid-cell {
            background: #323c4d;
            border-bottom: 4px solid rgba(255,255,255,.1);
        }

        .grid-cell.occupied {
            background: #66b051;
            border-bottom: 4px solid rgba(0,0,0,.15);
            color: #fff !important;
            font-weight: bold;
        }

        .grid-cell.initial-letter {
            background: #f59e0b;
            border-bottom: 4px solid rgba(0,0,0,.2);
            color: #fff !important;
            font-weight: bold;
            position: relative;
            box-shadow: 0 0 15px rgba(245, 158, 11, 0.4);
        }

        .grid-cell.initial-letter::before {
            content: '⭐';
            position: absolute;
            top: 3px;
            right: 3px;
            font-size: 0.5em;
            z-index: 10;
        }

        .grid-cell.valid-drop {
            background: #b7dfab;
            border-color: 4px solid rgba(0,0,0,.15);
            transform: scale(1.05);
            transition: all 0.1s ease;
        }

        .dark-mode .grid-cell.valid-drop {
            background: #3e5238;
        }

        .grid-cell.word-highlight {
            background: #fecaca;
            border-color: 4px solid rgba(0,0,0,.15);
            animation: wordPulse 0.8s ease-in-out;
            position: relative;
            overflow: visible;
            color: #fff !important;
        }

        .grid-cell.exploding {
            animation: cellExplode 0.6s ease-out forwards;
            color: #fff !important;
        }

        @keyframes wordPulse {
            0%, 100% { transform: scale(1); background: #ffc532; color: #fff; }
            25% { transform: scale(1.15); background: #ffbd32; color: #fff; }
            50% { transform: scale(1.2); background: #ff9c35; color: #fff; }
            75% { transform: scale(1.15); background: #ff8b35; color: #fff; }
        }

        @keyframes cellExplode {
            0% { 
                transform: scale(1); 
                opacity: 1; 
                background: #f56f0b;
                border-color: #d97706;
                color: #fff !important;
            }
            30% { 
                transform: scale(1.3); 
                opacity: 0.8; 
                background: #e5591d;
                border-color: #f59e0b;
                color: #fff !important;
            }
            60% { 
                transform: scale(1.5) rotate(180deg); 
                opacity: 0.6; 
                background: #e95a3b;
                border-color: #e6773d;
                color: #fff !important;
            }
            80% { 
                transform: scale(1.8) rotate(270deg); 
                opacity: 0.3; 
                background: #ffa536;
                border-color: #fdba74;
                color: #fff !important;
            }
            100% { 
                transform: scale(0) rotate(360deg); 
                opacity: 0; 
                background: transparent;
                border-color: transparent;
                color: transparent;
            }
        }

        .shapes-container {
            display: flex;
            justify-content: center;
            gap: 40px;
            flex-wrap: wrap;
            min-height: 120px;
            align-items: flex-start;
            padding: 10px 0;
            flex: 1;
            margin-top: auto;
        }

        .shape {
            padding: 10px;
            cursor: grab;
            transition: none;
            touch-action: none;
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 8px;
            height: 100px;
            width: 100px;
            justify-content: center;
            position: relative;
        }

        .shape:active {
            cursor: grabbing;
        }

        .shape.dragging {
            opacity: 0.9;
            transform: scale(1.0);
            z-index: 1000;
            position: fixed;
            pointer-events: none;
            transition: none;
            background: transparent;
            border: none;
            box-shadow: none;
            padding: 0;
            will-change: transform;
            transform: translateZ(0);
        }

        .shape.dragging .shape-cell {
            width: 56px;
            height: 56px;
            font-size: 1.8em;
            border-radius: 8px;
        }

        .shape.dragging .shape-cell.filled {
            background: #66b051;
            color: white;
            border-bottom: 4px solid rgba(0,0,0,.15);
            box-shadow: 0 4px 8px rgba(0,0,0,0.2);
        }

        .shape.disabled {
            opacity: 0.5;
            cursor: not-allowed;
        }

        .shape-grid {
            display: grid;
            gap: 2px;
            min-height: 60px;
            min-width: 60px;
            align-content: center;
            justify-content: center;
            margin-bottom: 15px;
        }

        .shape-cell {
            width: 32px;
            height: 32px;
            border-radius: 5px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.9em;
            font-weight: bold;
        }

        .shape-cell.filled {
            background: #66b051;
            color: white;
            border-bottom: 2px solid rgba(0,0,0,.15);
        }

        .shape-cell.empty {
            background: transparent;
        }

        .dark-mode .btn-primary:hover {
            background: #48546a;
        }

        .share-button  {
            font-family: "Lexend Deca", serif;
            color:#fff;
            background: #4b9c35;
            border-bottom: 3px solid rgba(0,0,0,.15);
            margin-top:10px
        }

        .rotate-btn {
            font-family: "Lexend Deca", serif;
            background: #e3e9f3;
            color: #000;
            border: none;
            border-radius: 50%;
            padding: 6px;
            font-size: 0.9em;
            font-weight: bold;
            cursor: pointer;
            transition: all 0.3s ease;
            width: 32px;
            height: 32px;
            display: flex;
            align-items: center;
            justify-content: center;
            position: absolute;
            bottom: -30px;
            left: 50%;
            transform: translateX(-50%);
            z-index: 10;
        }

        .dark-mode .rotate-btn {
            background: #323c4d;
            color: #f7fafc;
        }

        .rotate-btn:hover {
            background: #dae1ed;
        }

        .dark-mode .rotate-btn:hover {
            background: #5a6578;
        }

        .controls {
            display: flex;
            justify-content: center;
            gap: 10px;
            margin-bottom: 20px;
        }

        .btn {
            padding: 10px 20px;
            border: none;
            border-radius: 8px;
            font-size: 0.9em;
            font-weight: bold;
            cursor: pointer;
            transition: all 0.3s ease;
        }

        .btn:hover {
            opacity:.85;
        }

        .btn-primary {
            font-family: "Lexend Deca", serif;
            background: #e3e9f3;
            border-bottom: 3px solid rgba(0,0,0,.15);
            color: #000;
            transition: all 0.3s ease;
        }

        .dark-mode .btn-primary {
            background: #48546a;
            color: #f7fafc;
            border-bottom: 3px solid rgba(255,255,255,.15);
        }

        .btn-primary:hover {
            background: #dae1ed;
        }

        .dark-mode .btn-primary:hover {
            background: #5a6578;
        }

        .grid-cell.game-over-fill {
            animation: gameOverFill 0.8s ease-out forwards;
        }

        @keyframes gameOverFill {
            0% { 
                background: #edf3f8; 
                transform: scale(1);
                opacity: 1;
            }
            30% { 
                background: #d1d5db; 
                transform: scale(1.1);
                opacity: 0.9;
            }
            60% { 
                background: #9ca3af; 
                transform: scale(1.05);
                opacity: 0.8;
            }
            100% { 
                background: #6b7280; 
                transform: scale(1);
                opacity: 0.7;
            }
        }

        .game-over-wave {
            animation: gameOverWave 0.3s ease-out forwards;
        }

        @keyframes gameOverWave {
            0% { 
                transform: scale(1);
                background: #edf3f8;
            }
            50% { 
                transform: scale(1.2);
                background: #e5e7eb;
            }
            100% { 
                transform: scale(1);
                background: #9ca3af;
            }
        }

        .game-over {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(0,0,0,0);
            display: flex;
            align-items: center;
            justify-content: center;
            z-index: 2000;
            animation: gameOverBackdrop 0.8s ease-out forwards;
        }

        @keyframes gameOverBackdrop {
            0% { background: rgba(0,0,0,0); }
            100% { background: rgba(0,0,0,0.7); }
        }

        .game-over-content {
            background: white;
            padding: 25px 30px;
            border-radius: 20px;
            text-align: center;
            max-width: 380px;
            width: 90%;
            transform: scale(0);
            animation: gameOverPopup 0.6s ease-out forwards;
            animation-delay: 0.2s;
            transition: background 0.3s ease;
            position: relative;
        }

        .dark-mode .game-over-content {
            background: #2d3748;
        }

        .dark-mode .game-over-content h3 {
            color: #f7fafc !important;
        }

        .dark-mode .game-over-content .stats-container {
            background: rgba(0,0,0,0.25) !important;
        }

        @keyframes gameOverPopup {
            0% { 
                transform: scale(0) rotate(-10deg);
                opacity: 0;
            }
            60% { 
                transform: scale(1.1) rotate(2deg);
                opacity: 1;
            }
            100% { 
                transform: scale(1) rotate(0deg);
                opacity: 1;
            }
        }

        .game-over h2 {
            font-size: 1.8em;
            color: #000;
            margin-bottom: 10px;
            transition: color 0.3s ease;
        }

        .dark-mode .game-over h2 {
            color: #f7fafc;
        }

        .final-score {
            font-size: 1.8em;
            color: #4b9c35;
            margin-bottom: 10px;
        }
        
        .best-score {
            font-size: 1.5em;
            color: #000;
            margin: 10px 0;
            transition: color 0.3s ease;
        }

        .dark-mode .best-score {
            color: #f7fafc;
        }

        .countdown-timer {
            font-size: 1.4em;
            color: #373d4a;
            margin: 15px 0;
            font-weight: 500;
            transition: color 0.3s ease;
        }

        .dark-mode .countdown-timer {
            color: #c7cfdc;
        }

        .switch-mode-btn {
            font-family: "Lexend Deca", serif;
            background: #6b7280;
            color: white;
            border: none;
            padding: 10px 20px;
            border-radius: 8px;
            font-size: .9em;
            font-weight: bold;
            cursor: pointer;
            transition: all 0.3s ease;
            margin-top: 10px;
        }

        .switch-mode-btn:hover {
            background: #4b5563;
        }

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

        .word-animation {
            position: absolute;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            font-size: 1.5em;
            font-weight: bold;
            color: #4b9c35;
            pointer-events: none;
            opacity: 0;
            animation: scoreFloat 2s ease-out forwards;
            z-index: 9998;
            background: rgba(255, 255, 255, 0.9);
            padding: 4px 12px;
            border-radius: 15px;
            border: 1px solid #6acc50;
            backdrop-filter: blur(2px);
        }

        @keyframes scoreFloat {
            0% { opacity: 1; transform: translate(-50%, -50%); }
            100% { opacity: 0; transform: translate(-50%, -150%); }
        }

        .word-score-popup {
            position: absolute;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            font-size: 1.2em;
            font-weight: bold;
            color: #4b9c35;
            background: rgba(255, 255, 255, 0.95);
            padding: 8px 16px;
            border-radius: 20px;
            border: 2px solid #6acc50;
            box-shadow: 0 4px 20px rgba(16, 185, 129, 0.3);
            pointer-events: none;
            z-index: 9999;
            animation: scorePopup 2s ease-out forwards;
            backdrop-filter: blur(2px);
        }

        @keyframes scorePopup {
            0% { 
                opacity: 0; 
                transform: translate(-50%, -50%) scale(0.5); 
            }
            20% { 
                opacity: 1; 
                transform: translate(-50%, -50%) scale(1.2); 
            }
            40% { 
                transform: translate(-50%, -50%) scale(1); 
            }
            70% { 
                opacity: 1; 
                transform: translate(-50%, -80%) scale(1); 
            }
            100% { 
                opacity: 0; 
                transform: translate(-50%, -150%) scale(0.8); 
            }
        }

        .bomb-cell {
            position: relative;
        }

        .bomb-cell::before {
            content: '💣';
            position: absolute;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            font-size: 0.8em;
            z-index: 1;
        }

        @keyframes bombPulse {
            0%, 100% { 
                box-shadow: 0 0 10px rgba(220, 38, 38, 0.5), 0 0 20px rgba(220, 38, 38, 0.3);
                transform: scale(1);
            }
            50% { 
                box-shadow: 0 0 20px rgba(220, 38, 38, 0.8), 0 0 30px rgba(220, 38, 38, 0.5);
                transform: scale(1.05);
            }
        }

        .bomb-explosion {
            animation: cellExplode 1.3s ease-out forwards !important;
            z-index: 1000 !important;
            position: relative !important;
        }

        @keyframes bombExplode {
            0% { transform: scale(1); background: #ff8b35; color: #fff; opacity: 1; }
            25% { transform: scale(1.3); background: #ff9c35; color: #fff; opacity: .75; }
            50% { transform: scale(1.5); background: #ffbd32; color: #fff; opacity: .5; }
            75% { transform: scale(1.8); background: #ffc532; color: #fff; opacity: .25; }
            100% { transform: scale(2); background: #ffc532; color: #fff; opacity: 0; }
        }

        .bomb-blast-effect {
            position: absolute;
            width: 100%;
            height: 100%;
            background: radial-gradient(circle, rgba(227, 118, 68, 0.8) 0%, rgba(245, 158, 11, 0.6) 30%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
            animation: blastWave 0.8s ease-out forwards;
            z-index: 1001;
        }

        @keyframes blastWave {
            0% { 
                transform: scale(0); 
                opacity: 1; 
            }
            100% { 
                transform: scale(8); 
                opacity: 0; 
            }
        }

        .blast-particle {
            position: absolute;
            width: 8px;
            height: 8px;
            background: radial-gradient(circle, #e6773d 0%, #f59e0b 70%, transparent 100%);
            border-radius: 50%;
            pointer-events: none;
            z-index: 150;
        }

        @keyframes particleBlast {
            0% {
                opacity: 1;
                transform: scale(1);
            }
            100% {
                opacity: 0;
                transform: scale(0.2);
            }
        }

        /* Tutorial Styles */
        .tutorial-overlay {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(0, 0, 0, 0.7);
            display: flex;
            align-items: center;
            justify-content: center;
            z-index: 15000;
            opacity: 0;
            visibility: hidden;
            transition: all 0.3s ease;
        }

        .tutorial-overlay.active {
            opacity: 1;
            visibility: visible;
        }

        .tutorial-content {
            background: white;
            border-radius: 20px;
            padding: 30px;
            max-width: 380px;
            width: 90%;
            text-align: center;
            transform: scale(0.8);
            transition: all 0.3s ease;
        }

        .dark-mode .tutorial-content {
            background: #2d3748;
        }

        .tutorial-overlay.active .tutorial-content {
            transform: scale(1);
        }

        .tutorial-title {
            font-size: 1.8em;
            font-weight: bold;
            color: #000;
            margin-bottom: 15px;
        }

        .dark-mode .tutorial-title {
            color: #f7fafc;
        }

        .tutorial-text {
            font-size: 1.1em;
            color: #374151;
            margin-bottom: 25px;
            line-height: 1.5;
        }

        .dark-mode .tutorial-text {
            color: #e2e8f0;
        }

        .tutorial-demo {
            position: relative;
            margin: 20px 0;
            height: 120px;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .tutorial-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 4px;
            margin-right: 40px;
        }

        .tutorial-cell {
            width: 30px;
            height: 30px;
            background: #edf3f8;
            border-radius: 6px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.9em;
            font-weight: bold;
            border-bottom: 3px solid rgba(0,0,0,.1);
        }

        .dark-mode .tutorial-cell {
            background: #323c4d;
            border-bottom: 3px solid rgba(255,255,255,.1);
        }

        .tutorial-cell.filled {
            background: #66b051;
            color: white;
        }

        .tutorial-shape {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 4px;
        }

        .tutorial-shape-cell {
            width: 25px;
            height: 25px;
            background: #66b051;
            color: white;
            border-radius: 5px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 0.8em;
            font-weight: bold;
            border-bottom: 2px solid rgba(0,0,0,.15);
        }

        .tutorial-hand {
            position: absolute;
            font-size: 2em;
            z-index: 10;
            pointer-events: none;
            opacity: 0;
        }

        .tutorial-hand.grab {
            animation: tutorialGrab 3s ease-in-out infinite;
        }

        .tutorial-hand.drag {
            animation: tutorialDrag 3s ease-in-out infinite;
        }

        @keyframes tutorialGrab {
            0%, 100% { 
                transform: translate(100px, 0) scale(1);
                opacity: 0;
            }
            15% { 
                opacity: 1;
                transform: translate(100px, 0) scale(1);
            }
            25% { 
                transform: translate(100px, 0) scale(0.9);
            }
            30% { 
                transform: translate(100px, 0) scale(1);
            }
            45% { 
                transform: translate(-20px, -10px) scale(1);
            }
            70% { 
                transform: translate(-20px, -10px) scale(0.9);
            }
            75% { 
                transform: translate(-20px, -10px) scale(1);
                opacity: 1;
            }
            85% { 
                opacity: 0;
            }
        }

        .tutorial-arrow {
            position: absolute;
            font-size: 1.5em;
            color: #66b051;
            animation: tutorialArrow 3s ease-in-out infinite;
            opacity: 0;
        }

        @keyframes tutorialArrow {
            0%, 100% { 
                opacity: 0;
                transform: translate(60px, -5px);
            }
            35%, 65% { 
                opacity: 1;
                transform: translate(20px, -5px);
            }
        }

        .tutorial-skip {
            background: #e5e7eb;
            color: #374151;
            border: none;
            padding: 8px 16px;
            border-radius: 8px;
            font-size: 0.9em;
            cursor: pointer;
            margin-right: 10px;
            transition: all 0.3s ease;
        }

        .tutorial-skip:hover {
            background: #d1d5db;
        }

        .tutorial-start {
            font-family: "Lexend Deca", serif;
            background: #4b9c35;
            color: white;
            border: none;
            padding: 10px 20px;
            border-radius: 8px;
            font-size: 1em;
            font-weight: bold;
            cursor: pointer;
            transition: all 0.3s ease;
        }

        .tutorial-start:hover {
            background: #3b8527;
        }

        /* Archive Calendar Styles */
        .archive-calendar-wrapper {
            max-width: 320px;
            margin: 0 auto;
        }

        .archive-nav {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 15px;
        }

        .archive-nav-btn {
            background: #e5e7eb;
            border: none;
            border-radius: 6px;
            width: 28px;
            height: 28px;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            transition: all 0.3s ease;
            font-size: 1.1em;
        }

        .dark-mode .archive-nav-btn {
            background: #323c4d;
            color: #e2e8f0;
        }

        .archive-nav-btn:hover {
            background: #d1d5db;
        }

        .dark-mode .archive-nav-btn:hover {
            background: #5a6578;
        }

        .archive-header {
            text-align: center;
            font-weight: bold;
            color: #374151;
            font-size: 1em;
        }

        .dark-mode .archive-header {
            color: #e2e8f0;
        }

        .archive-weekdays {
            display: grid;
            grid-template-columns: repeat(7, 1fr);
            gap: 3px;
            margin-bottom: 8px;
        }

        .archive-weekday {
            text-align: center;
            font-size: 0.7em;
            font-weight: 600;
            color: #6b7280;
            padding: 4px 0;
        }

        .dark-mode .archive-weekday {
            color: #9ca3af;
        }

        .archive-calendar {
            display: grid;
            grid-template-columns: repeat(7, 1fr);
            gap: 3px;
        }

        .archive-day {
            aspect-ratio: 1;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 6px;
            cursor: pointer;
            transition: all 0.3s ease;
            font-size: 0.8em;
            font-weight: 500;
            position: relative;
            min-height: 32px;
        }

        .archive-day.available {
            background: #f3f4f6;
            color: #374151;
            border: 2px solid transparent;
        }

        .dark-mode .archive-day.available {
            background: #323c4d;
            color: #e2e8f0;
        }

        .archive-day.available:hover {
            background: #e5e7eb;
            transform: scale(1.05);
        }

        .dark-mode .archive-day.available:hover {
            background: #5a6578;
        }

        .archive-day.completed {
            background: #6acc50;
            color: white;
            border: 2px solid #4b9c35;
        }

        .archive-day.completed::after {
            content: '✓';
            position: absolute;
            bottom: 2px;
            right: 2px;
            font-size: 0.7em;
        }

        .archive-day.won {
            background: #6acc50;
            color: white;
            border: 2px solid #4b9c35;
        }

        .archive-day.won::after {
            content: '🏆';
            position: absolute;
            bottom: 1px;
            right: 1px;
            font-size: 0.6em;
        }

        .archive-day.lost {
            background: #ef4444;
            color: white;
            border: 2px solid #dc2626;
        }

        .archive-day.lost::after {
            content: '❌';
            position: absolute;
            bottom: 1px;
            right: 1px;
            font-size: 0.5em;
        }

        .archive-day.partial {
            background: #fbbf24;
            color: white;
            border: 2px solid #f59e0b;
        }

        .archive-day.partial::after {
            content: '⏳';
            position: absolute;
            bottom: 1px;
            right: 1px;
            font-size: 0.6em;
        }

        .archive-day.today {
            background: #4b9c35;
            color: white;
            border: 2px solid #3b8527;
            font-weight: bold;
        }

        .archive-day.unavailable {
            background: #f9fafb;
            color: #d1d5db;
            cursor: not-allowed;
        }

        .dark-mode .archive-day.unavailable {
            background: #1f2937;
            color: #4b5563;
        }

        .archive-container {
            max-height: 400px;
            overflow: hidden;
        }

        .archive-legend {
            display: flex;
            justify-content: center;
            gap: 12px;
            margin-bottom: 20px;
            font-size: 0.75em;
            transition: color 0.3s ease;
        }

        .archive-legend span {
            display: flex;
            align-items: center;
            gap: 4px;
            color: #6b7280;
        }

        .dark-mode .archive-legend span {
            color: #9ca3af !important;
        }

        @media (max-width: 600px) {
            body {
                padding: 0;
                margin: 0;
            }
            
            .game-container {
                width: 100%;
                height: 100vh;
                border-radius: 0;
                padding: 15px;
                box-shadow: none;
            }

            .mode-selector {
                margin-bottom: 10px;
            }

            .mode-button {
                padding: 6px 16px;
                font-size: 0.85em;
            }

            .tutorial-content {
                padding: 20px;
            }

            .tutorial-title {
                font-size: 1.5em;
            }

            .tutorial-text {
                font-size: 1em;
            }

            .tutorial-demo {
                height: 100px;
            }

            .tutorial-cell {
                width: 25px;
                height: 25px;
                font-size: 0.8em;
            }

            .tutorial-shape-cell {
                width: 20px;
                height: 20px;
                font-size: 0.7em;
            }

            .tutorial-hand {
                font-size: 1.5em;
            }

            @keyframes tutorialGrab {
                0%, 100% { 
                    transform: translate(80px, 0) scale(1);
                    opacity: 0;
                }
                15% { 
                    opacity: 1;
                    transform: translate(80px, 0) scale(1);
                }
                25% { 
                    transform: translate(80px, 0) scale(0.9);
                }
                30% { 
                    transform: translate(80px, 0) scale(1);
                }
                45% { 
                    transform: translate(-15px, -8px) scale(1);
                }
                70% { 
                    transform: translate(-15px, -8px) scale(0.9);
                }
                75% { 
                    transform: translate(-15px, -8px) scale(1);
                    opacity: 1;
                }
                85% { 
                    opacity: 0;
                }
            }

            @keyframes tutorialArrow {
                0%, 100% { 
                    opacity: 0;
                    transform: translate(50px, -5px);
                }
                35%, 65% { 
                    opacity: 1;
                    transform: translate(15px, -5px);
                }
            }
        
            .game-title {
                font-size: 1.8em;
            }
            
            .shapes-container {
                min-height: 100px;
                gap: 35px;
                padding: 5px 0;
            }
            
            .shape {
                height: 75px;
                width: 75px;
                padding: 6px;
            }
            
            .shape-grid {
                min-height: 45px;
                min-width: 45px;
                margin-bottom: 8px;
            }
            
            .game-board {
                max-width: 92%;
                width: 92%;
                gap: 5px;
                margin-bottom: 15px;
            }

            .score-display {
                font-size: 1.6em;
            }

            .daily-goal {
                font-size: 0.8em;
                margin-top: 6px;
            }

            .goal-progress {
                height: 20px;
                margin-top: 4px;
            }

            .goal-target-text {
                font-size: 0.75em;
            }
            
            .grid-cell {
                font-size: 1.6em;
                border-bottom: 3px solid rgba(0,0,0,.1);
            }
            
            .shape-cell {
                width: 28px;
                height: 28px;
                font-size: 0.75em;
            }
            
            .shape.dragging .shape-cell {
                width: 42px;
                height: 42px;
                font-size: 1.2em;
            }

            .popup {
                padding: 20px;
                width: 95%;
                margin: 10px;
            }

            .popup-title {
                font-size: 1.3em;
            }

            .archive-calendar-wrapper {
                max-width: 290px;
            }

            .archive-day {
                min-height: 28px;
                font-size: 0.75em;
            }

            .archive-nav-btn {
                width: 24px;
                height: 24px;
                font-size: 1em;
            }

            .archive-header {
                font-size: 0.9em;
            }

            .archive-weekday {
                font-size: 0.65em;
                padding: 2px 0;
            }

            .archive-weekdays {
                gap: 2px;
                margin-bottom: 6px;
            }

            .archive-calendar {
                gap: 2px;
            }

            .archive-container {
                max-height: 320px;
            }

            .archive-legend {
                gap: 8px !important;
                font-size: 0.7em !important;
                margin-bottom: 15px !important;
            }

            .archive-legend span {
                gap: 3px !important;
            }

            .archive-legend div {
                width: 10px !important;
                height: 10px !important;
            }
        }