* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    -webkit-tap-highlight-color: transparent;
}

body {
    font-family: 'Courier New', monospace;
    background: linear-gradient(135deg, #0F1419 0%, #1A1F2E 50%, #0F1419 100%);
    color: #00D9FF;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    height: 100vh;
    padding: 5px;
    overflow: hidden;
    margin: 0;
}

.game-container {
    max-width: 900px;
    width: 100%;
    height: 100vh;
    display: flex;
    flex-direction: column;
    background: #0F1419;
    border: 4px solid #00D9FF;
    border-radius: 12px;
    padding: 10px;
    box-shadow: 0 0 30px rgba(0, 217, 255, 0.4),
                inset 0 0 30px rgba(255, 107, 53, 0.1);
    position: relative;
    overflow: hidden;
}

.header {
    text-align: center;
    margin-bottom: 15px;
    flex-shrink: 0;
}

.header h1 {
    font-size: clamp(1.5em, 5vw, 2.5em);
    text-shadow: 0 0 15px #FF6B35,
                 0 0 30px #FF8800;
    margin-bottom: 10px;
    letter-spacing: 2px;
    color: #FF8800;
    background: linear-gradient(90deg, #FF6B35, #FFD700, #FF6B35);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stats {
    display: flex;
    justify-content: space-around;
    flex-wrap: wrap;
    gap: 10px;
    font-size: clamp(0.9em, 3vw, 1.2em);
    padding: 12px;
    background: rgba(0, 180, 216, 0.1);
    border: 2px solid #00D9FF;
    border-radius: 8px;
}

.stats span {
    text-shadow: 0 0 8px #00D9FF;
    color: #00D9FF;
    font-weight: bold;
}

#gameCanvas {
    display: block;
    width: 100%;
    height: 100%;
    flex: 1 1 auto;
    min-height: 0;
    background: #000000;
    border: 3px solid #00D9FF;
    border-radius: 8px;
    box-shadow: inset 0 0 40px rgba(255, 107, 53, 0.3),
                0 0 20px rgba(0, 217, 255, 0.3);
    image-rendering: auto;
    touch-action: none;
}

/* Pause button in input area */
.pause-btn {
    flex: 0 0 auto;
    padding: 12px 20px;
    min-width: 60px;
    font-size: clamp(1.2em, 4vw, 1.6em);
    font-family: 'Courier New', monospace;
    font-weight: bold;
    letter-spacing: 2px;
}

.pause-btn.hidden {
    display: none;
}

.input-area {
    margin: 10px 0;
    display: flex;
    gap: 10px;
    align-items: stretch;
    flex-shrink: 0;
}

.current-task {
    flex: 1;
    font-size: clamp(1.2em, 4vw, 1.6em);
    padding: 12px;
    background: rgba(255, 107, 53, 0.1);
    border: 3px solid #FF8800;
    border-radius: 8px;
    min-height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 0 20px rgba(255, 136, 0, 0.3);
}

#currentTask {
    text-shadow: 0 0 15px #FF8800,
                 0 0 25px #FF6B35;
    font-weight: bold;
    color: #FFD700;
}

#answerInput {
    flex: 0 1 auto;
    width: 150px;
    min-width: 100px;
    max-width: 200px;
    padding: 12px;
    font-size: clamp(1.2em, 4vw, 1.6em);
    font-family: 'Courier New', monospace;
    background: #1A1F2E;
    border: 3px solid #00D9FF;
    border-radius: 8px;
    color: #FFD700;
    text-align: center;
    outline: none;
    transition: all 0.3s;
    box-shadow: inset 0 0 20px rgba(0, 217, 255, 0.2);
}

#answerInput:focus {
    box-shadow: 0 0 25px rgba(0, 217, 255, 0.7),
                inset 0 0 20px rgba(255, 136, 0, 0.3);
    border-color: #FFD700;
    background: #0F1419;
}

#answerInput::placeholder {
    color: #00D9FF66;
}

.controls {
    display: flex;
    gap: 10px;
    justify-content: center;
    margin-top: 10px;
    flex-wrap: wrap;
    flex-shrink: 0;
}

.controls.hidden {
    display: none;
}

button {
    padding: 15px 35px;
    font-size: clamp(1em, 3vw, 1.2em);
    font-family: 'Courier New', monospace;
    background: linear-gradient(135deg, #FF6B35, #FF8800);
    border: 3px solid #FFD700;
    border-radius: 8px;
    color: #FFFFFF;
    cursor: pointer;
    transition: all 0.3s;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.5);
    font-weight: bold;
    box-shadow: 0 0 20px rgba(255, 107, 53, 0.5);
    min-width: 140px;
    touch-action: manipulation;
}

button:hover:not(:disabled) {
    background: linear-gradient(135deg, #00D9FF, #00B4D8);
    border-color: #00D9FF;
    box-shadow: 0 0 30px rgba(0, 217, 255, 0.7);
    transform: translateY(-2px);
}

button:active:not(:disabled) {
    transform: translateY(0);
    box-shadow: 0 0 15px rgba(0, 217, 255, 0.5);
}

button:disabled {
    opacity: 0.4;
    cursor: not-allowed;
    background: #1A1F2E;
    border-color: #555;
}

.game-over {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background: #0F1419;
    border: 4px solid #FF6B35;
    border-radius: 12px;
    padding: clamp(20px, 5vw, 40px);
    text-align: center;
    box-shadow: 0 0 50px rgba(255, 107, 53, 0.7);
    z-index: 1000;
    max-width: 90%;
    width: 400px;
}

.game-over.hidden {
    display: none;
}

.game-over h2 {
    color: #FF6B35;
    font-size: clamp(2em, 6vw, 2.8em);
    margin-bottom: 20px;
    text-shadow: 0 0 20px #FF6B35,
                 0 0 40px #FF8800;
}

.game-over p {
    font-size: clamp(1em, 3vw, 1.4em);
    margin: 10px 0;
    color: #00D9FF;
    text-shadow: 0 0 10px #00D9FF;
}

#restartBtn {
    margin-top: 20px;
    background: linear-gradient(135deg, #FF1493, #FF6B35);
    border-color: #FF1493;
}

#restartBtn:hover:not(:disabled) {
    background: linear-gradient(135deg, #FFD700, #FF8800);
    border-color: #FFD700;
    box-shadow: 0 0 30px rgba(255, 215, 0, 0.7);
}

/* Blinking animation for warnings */
@keyframes blink {
    0%, 50%, 100% { opacity: 1; }
    25%, 75% { opacity: 0.3; }
}

.warning {
    animation: blink 0.5s infinite;
}

/* Retro scanlines effect */
.game-container::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    pointer-events: none;
    background: repeating-linear-gradient(
        0deg,
        rgba(0, 217, 255, 0.03) 0px,
        rgba(0, 217, 255, 0.03) 1px,
        transparent 1px,
        transparent 2px
    );
    border-radius: 12px;
}

/* Mobile Optimizations */
@media (max-width: 768px) {
    body {
        padding: 3px;
    }

    .game-container {
        padding: 8px;
        border-width: 3px;
    }

    .header {
        margin-bottom: 8px;
    }

    .header h1 {
        letter-spacing: 1px;
        margin-bottom: 5px;
    }

    .stats {
        padding: 6px;
        gap: 6px;
        font-size: 0.85em;
    }

    #gameCanvas {
        border-width: 2px;
    }

    .input-area {
        margin: 8px 0;
    }

    .current-task {
        padding: 10px;
        min-height: 45px;
    }

    #answerInput {
        padding: 12px;
        width: 120px;
    }

    button {
        padding: 12px 25px;
        min-width: 120px;
    }

    .controls {
        gap: 8px;
    }
}

@media (max-width: 480px) {
    .game-container {
        padding: 8px;
    }

    .stats {
        font-size: 0.85em;
    }

    button {
        padding: 10px 20px;
        min-width: 100px;
    }
}

/* Landscape mode on mobile */
@media (max-height: 600px) and (orientation: landscape) {
    .header h1 {
        font-size: 1.5em;
        margin-bottom: 5px;
    }

    .stats {
        padding: 6px;
        font-size: 0.9em;
    }

    .current-task {
        padding: 8px;
        min-height: 40px;
        margin-bottom: 8px;
    }

    #answerInput {
        padding: 10px;
    }

    .controls {
        margin-top: 10px;
    }

    button {
        padding: 8px 20px;
    }
}

/* Prevent zoom on input focus (iOS) - exclude .key-btn to preserve responsive sizing */
@supports (-webkit-touch-callout: none) {
    input, button:not(.key-btn) {
        font-size: 16px !important;
    }
}

/* Number input optimization for mobile */
#answerInput[type="text"] {
    -moz-appearance: textfield;
}

#answerInput::-webkit-outer-spin-button,
#answerInput::-webkit-inner-spin-button {
    -webkit-appearance: none;
    margin: 0;
}

/* Mobile On-Screen Keyboard */
.mobile-keyboard {
    margin-top: 8px;
    padding: 0;
    background: transparent;
    border: none;
    flex-shrink: 0;
    display: flex;
    justify-content: center;
    width: 100%;
}

.mobile-keyboard.hidden {
    display: none;
}

.keyboard-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    grid-template-rows: repeat(3, minmax(44px, 56px));
    gap: 4px;
    width: 100%;
    max-width: 280px;
}

.key-btn {
    padding: 0;
    font-size: 1.4em;
    font-weight: bold;
    background: linear-gradient(135deg, #1A1F2E, #0F1419);
    border: 2px solid #00D9FF;
    border-radius: 6px;
    color: #FFD700;
    cursor: pointer;
    transition: all 0.15s;
    box-shadow: 0 3px 0 #00B4D8, 0 0 10px rgba(0, 217, 255, 0.3);
    text-shadow: 0 0 10px #FFD700;
    user-select: none;
    -webkit-user-select: none;
    outline: none;
}

/* Class-based pressed state (managed by JavaScript) */
.key-btn.pressed {
    transform: translateY(3px);
    box-shadow: 0 0 0 #00B4D8, 0 0 20px rgba(255, 215, 0, 0.6);
    background: linear-gradient(135deg, #FF6B35, #FF8800);
    border-color: #FFD700;
}

/* Disable all default browser button states for key buttons */
.key-btn:hover {
    background: linear-gradient(135deg, #1A1F2E, #0F1419);
    border-color: #00D9FF;
    box-shadow: 0 3px 0 #00B4D8, 0 0 10px rgba(0, 217, 255, 0.3);
}

.key-btn:active {
    transform: none;
    background: linear-gradient(135deg, #1A1F2E, #0F1419);
    border-color: #00D9FF;
    box-shadow: 0 3px 0 #00B4D8, 0 0 10px rgba(0, 217, 255, 0.3);
}

.key-btn:focus {
    outline: none;
    background: linear-gradient(135deg, #1A1F2E, #0F1419);
    border-color: #00D9FF;
    box-shadow: 0 3px 0 #00B4D8, 0 0 10px rgba(0, 217, 255, 0.3);
}

.key-btn:focus-visible {
    outline: none;
}

/* Right-aligned layout */
.key-7 { grid-column: 2; grid-row: 1; }
.key-8 { grid-column: 3; grid-row: 1; }
.key-9 { grid-column: 4; grid-row: 1; }

.key-4 { grid-column: 2; grid-row: 2; }
.key-5 { grid-column: 3; grid-row: 2; }
.key-6 { grid-column: 4; grid-row: 2; }

.key-0 { grid-column: 1; grid-row: 3; }
.key-1 { grid-column: 2; grid-row: 3; }
.key-2 { grid-column: 3; grid-row: 3; }
.key-3 { grid-column: 4; grid-row: 3; }

@media (max-width: 480px) {
    .keyboard-grid {
        max-width: 100%;
        gap: 3px;
    }

    .key-btn {
        font-size: clamp(1em, 5vw, 1.3em);
        min-width: 0;
    }
}

/* Extra small screens (iPhone SE, etc.) */
@media (max-width: 350px) {
    body {
        padding: 2px;
    }

    .game-container {
        padding: 5px;
        border-width: 2px;
    }

    .stats {
        padding: 4px;
        gap: 4px;
        font-size: 0.75em;
    }

    .keyboard-grid {
        gap: 2px;
    }

    .key-btn {
        font-size: 1em;
        border-width: 1px;
        border-radius: 4px;
    }

    .input-area {
        margin: 5px 0;
    }

    .current-task {
        padding: 8px;
        min-height: 40px;
        font-size: 1em;
    }

    .pause-btn {
        padding: 8px 12px;
        min-width: 45px;
        font-size: 1em;
    }

    button {
        padding: 8px 15px;
        min-width: 80px;
        font-size: 0.9em;
    }
}