/* ===== Game Screen ===== */
#game-screen {
    background: var(--game-bg);
    cursor: crosshair;
    overflow: hidden;
    touch-action: none;
}

#game-canvas {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
}

#effects-layer {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 2;
    pointer-events: none;
}

/* ===== Effect Animations ===== */

/* Key character display */
.effect-key {
    position: absolute;
    font-size: 120px;
    font-weight: 900;
    pointer-events: none;
    animation: keyPop 1.2s ease-out forwards;
    text-shadow: 0 0 20px currentColor;
    z-index: 10;
}

@keyframes keyPop {
    0% { transform: scale(0) rotate(-15deg); opacity: 1; }
    30% { transform: scale(1.3) rotate(5deg); opacity: 1; }
    100% { transform: scale(2) rotate(0deg); opacity: 0; }
}

/* Particle */
.effect-particle {
    position: absolute;
    border-radius: 50%;
    pointer-events: none;
    animation: particleFly var(--duration, 1s) ease-out forwards;
}

@keyframes particleFly {
    0% { transform: translate(0, 0) scale(1); opacity: 1; }
    100% { transform: translate(var(--tx, 100px), var(--ty, -100px)) scale(0); opacity: 0; }
}

/* Shape */
.effect-shape {
    position: absolute;
    pointer-events: none;
    animation: shapeFall var(--duration, 2s) ease-in forwards;
}

@keyframes shapeFall {
    0% { transform: translateY(0) rotate(0deg); opacity: 1; }
    100% { transform: translateY(100vh) rotate(720deg); opacity: 0; }
}

/* Ripple */
.effect-ripple {
    position: absolute;
    border: 3px solid currentColor;
    border-radius: 50%;
    pointer-events: none;
    animation: rippleExpand 1s ease-out forwards;
}

@keyframes rippleExpand {
    0% { width: 0; height: 0; opacity: 1; }
    100% { width: 300px; height: 300px; opacity: 0; margin: -150px; }
}

/* Confetti */
.effect-confetti {
    position: absolute;
    width: 10px;
    height: 10px;
    pointer-events: none;
    animation: confettiBurst var(--duration, 1.5s) ease-out forwards;
}

@keyframes confettiBurst {
    0% { transform: translate(0, 0) rotate(0deg) scale(1); opacity: 1; }
    50% { opacity: 1; }
    100% { transform: translate(var(--tx), var(--ty)) rotate(1080deg) scale(0.3); opacity: 0; }
}

/* Firework */
.effect-firework-trail {
    position: absolute;
    width: 4px;
    height: 4px;
    background: gold;
    border-radius: 50%;
    pointer-events: none;
    animation: fireworkRise 0.6s ease-out forwards;
}

@keyframes fireworkRise {
    0% { transform: translateY(0); opacity: 1; }
    100% { transform: translateY(var(--rise, -200px)); opacity: 0.8; }
}

/* Bubble */
.effect-bubble {
    position: absolute;
    border: 2px solid;
    border-radius: 50%;
    pointer-events: none;
    animation: bubbleFloat var(--duration, 3s) ease-out forwards;
    background: radial-gradient(circle at 30% 30%, rgba(255,255,255,0.3), transparent);
}

@keyframes bubbleFloat {
    0% { transform: translateY(0) scale(0.5); opacity: 0.8; }
    50% { transform: translateY(-30vh) scale(1); opacity: 0.6; }
    100% { transform: translateY(-60vh) scale(1.2); opacity: 0; }
}

/* Spiral */
.effect-spiral-dot {
    position: absolute;
    border-radius: 50%;
    pointer-events: none;
    animation: spiralExpand var(--duration, 1.5s) ease-out forwards;
}

@keyframes spiralExpand {
    0% { transform: translate(0, 0) scale(1); opacity: 1; }
    100% { transform: translate(var(--tx), var(--ty)) scale(0); opacity: 0; }
}

/* Lightning */
.effect-lightning {
    position: absolute;
    pointer-events: none;
    animation: lightningFlash 0.5s ease-out forwards;
}

@keyframes lightningFlash {
    0% { opacity: 1; }
    20% { opacity: 1; }
    30% { opacity: 0.3; }
    40% { opacity: 1; }
    100% { opacity: 0; }
}

/* Emoji */
.effect-emoji {
    position: absolute;
    font-size: 48px;
    pointer-events: none;
    animation: emojiFall var(--duration, 2.5s) ease-in forwards;
}

@keyframes emojiFall {
    0% { transform: translateY(0) rotate(0deg) scale(1); opacity: 1; }
    100% { transform: translateY(100vh) rotate(360deg) scale(0.5); opacity: 0; }
}

/* Screen flash */
.effect-flash {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    animation: screenFlash 0.4s ease-out forwards;
    z-index: 100;
}

@keyframes screenFlash {
    0% { opacity: 0.5; }
    100% { opacity: 0; }
}

/* Flower */
.effect-flower {
    position: absolute;
    pointer-events: none;
    font-size: 10px;
    animation: flowerBloom 2s ease-out forwards;
}

@keyframes flowerBloom {
    0% { transform: scale(0) rotate(0deg); opacity: 1; }
    50% { transform: scale(5) rotate(180deg); opacity: 1; }
    100% { transform: scale(6) rotate(360deg); opacity: 0; }
}

/* Star spin */
.effect-star {
    position: absolute;
    pointer-events: none;
    animation: starSpin var(--duration, 1.5s) ease-out forwards;
}

@keyframes starSpin {
    0% { transform: rotate(0deg) scale(1); opacity: 1; }
    100% { transform: rotate(720deg) scale(0); opacity: 0; }
}

/* Rainbow trail */
.effect-rainbow-dot {
    position: absolute;
    border-radius: 50%;
    pointer-events: none;
    animation: rainbowFade 1s ease-out forwards;
}

@keyframes rainbowFade {
    0% { transform: scale(1); opacity: 0.8; }
    100% { transform: scale(0); opacity: 0; }
}

/* Robot Easter egg */
.effect-robot {
    position: absolute;
    pointer-events: none;
    font-size: 20px;
    animation: robotBounce 2s ease-out forwards;
    z-index: 20;
}

@keyframes robotBounce {
    0%   { transform: translate(-50%, -50%) scale(0) rotate(0deg); opacity: 1; }
    25%  { transform: translate(-50%, -50%) scale(8) rotate(-20deg); opacity: 1; }
    50%  { transform: translate(-50%, -50%) scale(6) rotate(20deg); opacity: 1; }
    75%  { transform: translate(-50%, -50%) scale(8) rotate(-10deg); opacity: 1; }
    100% { transform: translate(-50%, -50%) scale(10) rotate(360deg); opacity: 0; }
}

/* Bouncing ball */
.effect-ball {
    position: absolute;
    border-radius: 50%;
    pointer-events: none;
    animation: ballBounce var(--duration, 3s) ease-in forwards;
}

@keyframes ballBounce {
    0% { transform: translateY(0); opacity: 1; }
    25% { transform: translateY(30vh); }
    50% { transform: translateY(10vh); }
    75% { transform: translateY(50vh); }
    100% { transform: translateY(100vh); opacity: 0; }
}

/* LEO spacebar Easter egg */
.effect-leo-letter {
    position: absolute;
    font-size: 20vw;
    font-weight: 900;
    pointer-events: none;
    animation: leoLetterPop 2.5s ease-out forwards;
    text-shadow: 0 0 30px currentColor, 0 0 60px currentColor;
    z-index: 50;
    line-height: 1;
}

@keyframes leoLetterPop {
    0%   { transform: translate(-50%, -50%) scale(0) rotate(-20deg); opacity: 0; }
    15%  { transform: translate(-50%, -50%) scale(1.3) rotate(8deg);  opacity: 1; }
    30%  { transform: translate(-50%, -50%) scale(0.9) rotate(-3deg); opacity: 1; }
    50%  { transform: translate(-50%, -50%) scale(1)   rotate(0deg);  opacity: 1; }
    80%  { transform: translate(-50%, -50%) scale(1)   rotate(0deg);  opacity: 1; }
    100% { transform: translate(-50%, -50%) scale(1.2) rotate(0deg);  opacity: 0; }
}

/* ===== Mobile Effect Scaling ===== */
@media (max-width: 480px) {
    .effect-key,
    .effect-sw-key,
    .effect-dino-key {
        font-size: 70px;
    }

    .effect-leo-letter {
        font-size: 25vw;
    }

    .effect-character {
        font-size: 90px;
    }

    .effect-emoji {
        font-size: 32px;
    }

    .effect-flower {
        font-size: 8px;
    }
}