/* =========================================
           CORE CRT & FONT STYLES
           ========================================= */
        /* ===== CRT EFFECT ===== */
        /* Based on D3NN7 and Patrick Hlauke's CRT effect */
        @font-face {
            font-family: 'Noto Sans Display';
            font-style: normal;
            font-weight: 400;
            src: url(./fonts/NotoSansDisplay-Regular.ttf);
        }
        
        /* Apply CRT effect to all text - LIGHTENED VERSION */
        body, html, #login-screen, #gift-screen, .terminal-box, #message, #reset-btn, input, button, .terminal-text {
            font-family: 'Courier New', 'Noto Sans Display', monospace;
            color: #eee;
            text-shadow: 0.06rem 0 0.06rem rgba(255, 255, 255, 0.5), -0.125rem 0 0.06rem rgba(0, 0, 0, 0.5);
            letter-spacing: 0.125em;
            animation-duration: 0.01s;
            animation-name: textflicker;
            animation-iteration-count: infinite;
            animation-direction: alternate;
        }
        
        /* CRT text flicker animation - Lightened version */
        @keyframes textflicker {
            from {
                text-shadow: 1px 0 0 rgba(255, 255, 255, 0.5), -2px 0 0 rgba(0, 0, 0, 0.5);
            }
            to {
                text-shadow: 2px 0.5px 1px rgba(255, 255, 255, 0.4), -1px -0.5px 1px rgba(0, 0, 0, 0.4);
            }
        }

        /* CRT scanlines overlay - LIGHTENED */
        .crt::before {
            content: " ";
            display: block;
            position: fixed;
            top: 0;
            left: 0;
            bottom: 0;
            right: 0;
            background: linear-gradient(
                rgba(18, 16, 16, 0) 50%, 
                rgba(0, 0, 0, 0.1) 50%
            );
            background-size: 100% 4px;
            z-index: 100;
            pointer-events: none;
        }
        
        /* CRT glow/vignette - LIGHTENED */
        .crt::after {
            content: " ";
            display: block;
            position: fixed;
            top: 0;
            left: 0;
            bottom: 0;
            right: 0;
            background: rgba(0, 0, 0, 0.05);
            opacity: 0.2;
            z-index: 99;
            pointer-events: none;
            box-shadow: inset 0 0 150px rgba(0, 0, 0, 0.3);
        }

        body, html {
            margin: 0;
            padding: 0;
            height: 100%;
            width: 100%;
            overflow: hidden;
            background: #111;
            user-select: none;
            image-rendering: pixelated;
            image-rendering: crisp-edges;
        }

        /* Screen Curvature */
        .screen-curvature {
            position: fixed;
            top: 0; left: 0; right: 0; bottom: 0;
            pointer-events: none;
            z-index: 98;
            background: radial-gradient(
                ellipse at center,
                rgba(0,0,0,0) 0%,
                rgba(0,0,0,0) 60%,
                rgba(0,0,0,0.05) 100%
            );
        }

        /* =========================================
           COMMON LAYOUTS
           ========================================= */
        .screen-section {
            display: none;
            height: 100vh;
            width: 100vw;
            flex-direction: column;
            justify-content: center;
            align-items: center;
            position: absolute;
            top: 0;
            left: 0;
            background: #000;
        }

        .terminal-box {
            text-align: center;
            width: 400px;
            max-width: 90%;
            position: relative;
            z-index: 101;
        }

        input[type="text"] {
            background: rgba(0, 0, 0, 0.3);
            border: none;
            border-bottom: 1px solid #777;
            color: #fff;
            font-size: 1.2rem;
            text-align: center;
            width: 100%;
            padding: 10px;
            outline: none;
            text-transform: uppercase;
            margin-top: 20px;
            transition: all 0.3s;
            box-sizing: border-box;
            border-radius: 0;
            box-shadow: 0 0 10px rgba(255, 255, 255, 0.05);
        }

        input[type="text"]:focus {
            border-bottom: 2px solid #fff;
            background: rgba(0, 0, 0, 0.5);
            box-shadow: 0 0 15px rgba(255, 255, 255, 0.1);
        }

        .action-btn {
            margin-top: 30px;
            background: rgba(0, 0, 0, 0.3);
            border: 1px solid #777;
            color: #aaa;
            padding: 10px 20px;
            cursor: pointer;
            text-transform: uppercase;
            letter-spacing: 0.2em;
            transition: all 0.3s;
            box-shadow: 0 0 10px rgba(255, 255, 255, 0.05);
        }

        .action-btn:hover {
            border-color: #fff;
            color: #fff;
            background: rgba(0, 0, 0, 0.5);
            box-shadow: 0 0 15px rgba(255, 255, 255, 0.1);
        }

        .status-msg {
            color: #ff5555;
            font-size: 0.8rem;
            margin-top: 15px;
            min-height: 20px;
            opacity: 0;
            text-shadow: 0.06rem 0 0.06rem rgba(255, 85, 85, 0.5), -0.125rem 0 0.06rem rgba(0, 0, 0, 0.5);
        }

        /* =========================================
           SPECIFIC SCREENS
           ========================================= */
        
        /* 1. Login */
        h2.blink { 
            animation: blinking 1.5s infinite, textflicker 0.01s infinite alternate;
            font-weight: normal;
            font-size: 1rem;
            letter-spacing: 2px;
            margin-bottom: 30px;
            text-transform: uppercase;
        }
        @keyframes blinking { 0% { opacity: 1; } 50% { opacity: 0.7; } 100% { opacity: 1; } }

        /* 2. Quiz */
        #quiz-question {
            font-size: 1.1rem;
            min-height: 60px;
            margin-bottom: 10px;
            text-align: left;
            border-left: 2px solid #fff;
            padding-left: 15px;
            display: flex;
            align-items: center;
        }
        #quiz-progress {
            font-size: 0.8rem;
            color: #888;
            margin-bottom: 20px;
            text-align: right;
        }

        /* 3. Games Container */
        #game-area {
            border: 1px solid #333;
            padding: 20px;
            min-height: 300px;
            width: 100%;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            position: relative;
        }

        /* GAME: Tic Tac Toe - CENTERED */
        .ttt-grid { 
            display: grid; 
            grid-template-columns: repeat(3, 1fr); 
            gap: 5px; 
            width: 200px; 
            margin: 0 auto;
        }
        .ttt-cell { 
            width: 60px; 
            height: 60px; 
            border: 1px solid #777; 
            display: flex; 
            align-items: center; 
            justify-content: center; 
            font-size: 2rem; 
            cursor: pointer;
            transition: all 0.2s;
            position: relative;
        }
        .ttt-cell:hover {
            background: rgba(255, 255, 255, 0.1);
            border-color: #fff;
            box-shadow: 0 0 10px rgba(255, 255, 255, 0.2);
        }
        .ttt-cell::after {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: rgba(255, 255, 255, 0.05);
            opacity: 0;
            transition: opacity 0.2s;
            pointer-events: none;
        }
        .ttt-cell:hover::after {
            opacity: 1;
        }
        
        /* GAME: Snake */
        canvas#snake-canvas { 
            border: 1px solid #fff; 
            background: #000; 
            display: block;
            margin: 0 auto;
        }

        /* GAME: Chess */
        .chess-board-text { 
            font-family: monospace; 
            white-space: pre; 
            line-height: 1.2; 
            font-size: 1.2rem; 
            text-align: center; 
            margin-bottom: 15px;
            margin-left: auto;
            margin-right: auto;
        }
        
        /* GAME: Wordle - CENTERED */
        .wordle-container {
            display: flex;
            flex-direction: column;
            align-items: center;
            margin-bottom: 20px;
            width: 100%;
        }
        .wordle-row { 
            display: flex; 
            gap: 5px; 
            margin-bottom: 5px; 
            justify-content: center; 
        }
        .wordle-tile { 
            width: 40px; 
            height: 40px; 
            border: 1px solid #555; 
            display: flex; 
            align-items: center; 
            justify-content: center; 
            text-transform: uppercase; 
            font-weight: bold; 
        }
        .wordle-correct { background: #fff; color: #000; border-color: #fff; }
        .wordle-present { border-color: #fff; border-style: dashed; }
        .wordle-absent { opacity: 0.3; }

        /* 4. Gift Screen */
        #gift-screen { 
            transition: background-color 1s ease-in-out; 
        }
        
        #gift-container {
            text-align: center; 
            padding: 30px;
            background: rgba(0,0,0,0.1); 
            border: 1px solid rgba(123, 182, 206, 0.1);
            border-radius: 5px; 
            z-index: 10;
            box-shadow: 0 0 30px rgba(123, 182, 206, 0.1),
                        0 0 60px rgba(123, 182, 206, 0.05),
                        inset 0 0 20px rgba(255, 255, 255, 0.05);
        }
        
        #gift-img { 
            width: 250px; 
            cursor: pointer; 
            transition: transform 0.2s; 
            image-rendering: pixelated;
            image-rendering: crisp-edges;
            filter: drop-shadow(0 0 10px rgba(255, 255, 255, 0.2));
            user-select: none;
            -webkit-user-drag: none;
        }
        
        #message {
            margin-top: 20px;
            font-size: 1.5rem;
            color: #e0e0e0;
            min-height: 40px;
            font-weight: 300;
            max-width: 800px;
            text-align: center;
            padding: 10px;
            background: rgba(0, 0, 0, 0.1);
            border-radius: 3px;
            border: 1px solid rgba(123, 182, 206, 0.1);
            margin-left: auto;
            margin-right: auto;
        }
        
        #snow-canvas { 
            position: absolute; 
            top: 0; 
            left: 0; 
            width: 100%; 
            height: 100%; 
            pointer-events: none; 
            z-index: 5; 
            image-rendering: pixelated;
            image-rendering: crisp-edges;
        }
        
        /* Light background adjustments */
        .light-background #gift-container {
            background: rgba(255, 255, 255, 0.1);
            border-color: rgba(0, 0, 0, 0.2);
            box-shadow: 0 0 30px rgba(0, 0, 0, 0.1),
                        0 0 60px rgba(0, 0, 0, 0.05),
                        inset 0 0 20px rgba(0, 0, 0, 0.05);
        }

        .light-background #message {
            background: rgba(255, 255, 255, 0.1);
            border-color: rgba(0, 0, 0, 0.2);
            color: #222;
        }

        .light-background #reset-btn {
            background-color: rgba(0, 0, 0, 0.1);
            color: #222;
            border-color: rgba(0, 0, 0, 0.2);
        }

        .light-background #reset-btn:hover {
            background-color: rgba(0, 0, 0, 0.2);
            color: #000;
            border-color: rgba(0, 0, 0, 0.3);
        }

        /* Animations */
        @keyframes shake {
            0% { transform: translate(1px, 1px) rotate(0deg); }
            10% { transform: translate(-1px, -2px) rotate(-1deg); }
            20% { transform: translate(-3px, 0px) rotate(1deg); }
            30% { transform: translate(3px, 2px) rotate(0deg); }
            40% { transform: translate(1px, -1px) rotate(1deg); }
            50% { transform: translate(-1px, 2px) rotate(-1deg); }
            60% { transform: translate(-3px, 1px) rotate(0deg); }
            70% { transform: translate(3px, 1px) rotate(-1deg); }
            80% { transform: translate(-1px, -1px) rotate(1deg); }
            90% { transform: translate(1px, 2px) rotate(0deg); }
            100% { transform: translate(1px, -2px) rotate(-1deg); }
        }
        .shake-anim { animation: shake 0.5s; }
        
        @keyframes popScale {
            0% { transform: scale(0.8); opacity: 0; }
            100% { transform: scale(1); opacity: 1; }
        }
        .open-anim { animation: popScale 0.5s cubic-bezier(0.175, 0.885, 0.32, 1.275); }

        @keyframes fadeIn {
            to { opacity: 1; }
        }

        /* RPS Choice Button Hover Effects */
        .rps-choice-btn:hover {
            filter: brightness(1.2);
        }

        /* RPS Choice Display */
        .rps-choice-display {
            padding: 15px;
            border-radius: 10px;
            background: rgba(0, 0, 0, 0.3);
            min-width: 120px;
            transition: all 0.3s;
        }

        /* CRT scanline effect for RPS area */
        #game-area::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: linear-gradient(
                rgba(18, 16, 16, 0) 50%,
                rgba(0, 0, 0, 0.25) 50%
            );
            background-size: 100% 4px;
            pointer-events: none;
            z-index: 1;
            opacity: 0.3;
        }

        /* RPS Round indicator glow */
        @keyframes roundGlow {
            0% { text-shadow: 0 0 5px #ffffaa; }
            50% { text-shadow: 0 0 20px #ffffaa, 0 0 30px #ffaa00; }
            100% { text-shadow: 0 0 5px #ffffaa; }
        }