/* Import a cute rounded font for kids space adventure */
@import url('https://fonts.googleapis.com/css2?family=Fredoka:wght@400;600;700&display=swap');

* {
    box-sizing: border-box;
    user-select: none;
    -webkit-user-select: none;
}

body, html {
    margin: 0;
    padding: 0;
    width: 100%;
    height: 100%;
    overflow: hidden;
    background-color: #060a17;
    font-family: 'Fredoka', 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
}

/* Position the canvas to fill the window */
#gameCanvas {
    display: block;
    width: 100vw;
    height: 100vh;
    cursor: none; /* Hide default cursor to use custom crosshair */
}

/* Cute Start Overlay Screen */
#startOverlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: radial-gradient(circle, rgba(16,23,53,0.95) 0%, rgba(6,10,23,0.98) 100%);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    z-index: 10;
    color: #ffffff;
    transition: opacity 0.8s ease, visibility 0.8s ease;
    cursor: pointer;
    text-align: center;
}

#startOverlay.hidden {
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
}

/* Interactive elements inside start overlay */
.title-container {
    animation: float 3s ease-in-out infinite;
}

h1 {
    font-size: clamp(2rem, 5vw, 4.5rem);
    margin: 0 0 10px 0;
    font-weight: 700;
    letter-spacing: 2px;
    background: linear-gradient(45deg, #00ffff, #ff00ff, #ffea00, #39ff14);
    background-size: 300% 300%;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    animation: rainbowText 6s ease infinite;
    text-shadow: 0 0 20px rgba(0,255,255,0.2);
}

p.subtitle {
    font-size: clamp(1rem, 2.5vw, 1.8rem);
    color: #e0f7fa;
    margin: 0 0 40px 0;
    font-weight: 400;
}

.rocket-icon {
    font-size: clamp(3rem, 8vw, 6rem);
    margin-bottom: 20px;
    display: inline-block;
    animation: shake 0.5s ease-in-out infinite alternate;
}

.launch-btn {
    padding: 15px 40px;
    font-size: clamp(1.2rem, 3vw, 2.2rem);
    font-weight: 700;
    color: #ffffff;
    background: linear-gradient(135deg, #ff9800 0%, #ff5722 100%);
    border: 4px solid #ffffff;
    border-radius: 50px;
    box-shadow: 0 10px 25px rgba(255,87,34,0.4);
    animation: pulse 1.8s infinite;
    transition: transform 0.2s;
}

.launch-btn:hover {
    transform: scale(1.08);
}

/* Instructions footer */
.controls-guide {
    position: absolute;
    bottom: 40px;
    display: flex;
    gap: 40px;
    font-size: clamp(0.9rem, 2vw, 1.3rem);
    color: #b0bec5;
    background: rgba(255, 255, 255, 0.05);
    padding: 15px 30px;
    border-radius: 20px;
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.guide-item {
    display: flex;
    align-items: center;
    gap: 8px;
}

.mouse-btn {
    background-color: #37474f;
    border: 2px solid #b0bec5;
    padding: 2px 8px;
    border-radius: 6px;
    color: #ffffff;
    font-weight: bold;
}

/* Animations */
@keyframes float {
    0% { transform: translateY(0px); }
    50% { transform: translateY(-15px); }
    100% { transform: translateY(0px); }
}

@keyframes shake {
    0% { transform: rotate(-3deg) translate(-2px, 0); }
    100% { transform: rotate(3deg) translate(2px, -2px); }
}

@keyframes rainbowText {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

@keyframes pulse {
    0% {
        box-shadow: 0 0 0 0 rgba(255, 87, 34, 0.7);
    }
    70% {
        box-shadow: 0 0 0 20px rgba(255, 87, 34, 0);
    }
    100% {
        box-shadow: 0 0 0 0 rgba(255, 87, 34, 0);
    }
}

.guide-group {
    display: flex;
    flex-direction: column;
    gap: 10px;
    text-align: left;
}

.guide-group h3 {
    margin: 0 0 5px 0;
    font-size: clamp(0.9rem, 1.8vw, 1.2rem);
    color: #80deea;
    border-bottom: 2px solid rgba(128, 222, 234, 0.2);
    padding-bottom: 5px;
}

/* Touch Controls Gamepad Overlay */
#touchControls {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none; /* Let canvas clicks pass through */
    z-index: 5;
    display: none; /* Hidden by default, shown via JS on touch devices */
}

#joystickContainer {
    position: absolute;
    bottom: 40px;
    left: 40px;
    width: 130px;
    height: 130px;
    background: rgba(255, 255, 255, 0.1);
    border: 3px solid rgba(255, 255, 255, 0.25);
    border-radius: 50%;
    pointer-events: auto;
    touch-action: none;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 15px rgba(0,0,0,0.5);
    backdrop-filter: blur(2px);
    -webkit-backdrop-filter: blur(2px);
}

#joystickKnob {
    width: 60px;
    height: 60px;
    background: radial-gradient(circle, #ffffff 0%, #b0bec5 100%);
    border: 3px solid #37474f;
    border-radius: 50%;
    box-shadow: 0 4px 10px rgba(0,0,0,0.4);
    touch-action: none;
}

#touchButtons {
    position: absolute;
    bottom: 40px;
    right: 40px;
    display: flex;
    gap: 25px;
    pointer-events: auto;
}

.touch-btn {
    width: 90px;
    height: 90px;
    border-radius: 50%;
    border: 4px solid #ffffff;
    font-family: 'Fredoka', sans-serif;
    font-size: 1.15rem;
    font-weight: bold;
    color: #ffffff;
    text-shadow: 0 2px 4px rgba(0,0,0,0.4);
    box-shadow: 0 8px 20px rgba(0,0,0,0.5);
    touch-action: none;
    display: flex;
    align-items: center;
    justify-content: center;
    outline: none;
    cursor: pointer;
    user-select: none;
    -webkit-user-select: none;
}

.boost-btn {
    background: linear-gradient(135deg, #ff9800 0%, #ff5722 100%);
    box-shadow: 0 8px 20px rgba(255, 87, 34, 0.35), inset 0 4px 8px rgba(255,255,255,0.4);
}

.boost-btn:active {
    transform: scale(0.92);
    box-shadow: 0 4px 10px rgba(255, 87, 34, 0.2);
}

.fire-btn {
    background: linear-gradient(135deg, #00ffff 0%, #00acc1 100%);
    box-shadow: 0 8px 20px rgba(0, 188, 212, 0.35), inset 0 4px 8px rgba(255,255,255,0.4);
}

.fire-btn:active {
    transform: scale(0.92);
    box-shadow: 0 4px 10px rgba(0, 188, 212, 0.2);
}

/* Responsive Scaling for Mobile Screens and Landscape Views */
@media (max-width: 768px) or (max-height: 500px) {
    .controls-guide {
        position: relative;
        bottom: auto;
        margin-top: 15px;
        gap: 15px;
        padding: 10px 15px;
        flex-wrap: wrap;
        justify-content: center;
    }
    
    .title-container h1 {
        font-size: 2.0rem;
    }
    
    .title-container p.subtitle {
        margin-bottom: 20px;
    }
    
    .rocket-icon {
        margin-bottom: 10px;
    }
}

@media (max-height: 480px) {
    #joystickContainer {
        width: 100px;
        height: 100px;
        bottom: 20px;
        left: 20px;
    }
    
    #joystickKnob {
        width: 46px;
        height: 46px;
    }
    
    #touchButtons {
        bottom: 20px;
        right: 20px;
        gap: 15px;
    }
    
    .touch-btn {
        width: 75px;
        height: 75px;
        font-size: 0.95rem;
        border-width: 3px;
    }
}