:root {
    --primary-font: 'Comic Sans MS', 'Chalkboard SE', sans-serif;
}

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

body {
    margin: 0;
    padding: 0;
    overflow: hidden;
    font-family: var(--primary-font);
    background-color: #87CEEB;
    height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
}

#game-container {
    width: 100%;
    height: 100%;
    max-width: 800px;
    position: relative;
    display: flex;
    flex-direction: column;
}

.background-layer {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url('assets/background.png');
    background-size: cover;
    background-position: center bottom;
    z-index: -1;
    opacity: 0.8;
}

header {
    background: rgba(255, 255, 255, 0.4);
    padding: 10px 15px;
    border-radius: 15px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    backdrop-filter: blur(5px);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
    margin-bottom: 20px;
    width: 90%;
    z-index: 10;
    /* Keep z-index for header */
    align-self: center;
    /* Center the header within game-container */
}

h1 {
    margin: 0;
    font-size: 2rem;
    color: white;
    text-shadow: 2px 2px 0px #000;
}

#header-controls {
    display: flex;
    gap: 10px;
    align-items: center;
}

#level-display {
    font-size: 1.1rem;
    font-weight: bold;
    color: #4a4a4a;
    background: white;
    padding: 5px 12px;
    border-radius: 20px;
}

.icon-btn {
    padding: 8px 15px;
    font-size: 0.9rem;
    cursor: pointer;
    border: none;
    border-radius: 20px;
    background: #ff9800;
    color: white;
    font-weight: bold;
    transition: transform 0.2s, background 0.2s;
    box-shadow: 0 4px 0 #e68a00;
}

.icon-btn:active {
    transform: translateY(2px);
    box-shadow: 0 2px 0 #e68a00;
}

#music-btn {
    background: #ff9800;
    /* Default color */
}

#music-btn:active {
    box-shadow: 0 0 #E65100;
    transform: translateY(4px);
}

main {
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: space-evenly;
    padding: 10px;
    gap: 10px;
    overflow: hidden;
}

/* Houses Area */
#houses-container {
    flex: 1.4;
    /* Houses get more vertical space */
    display: flex;
    justify-content: space-around;
    align-items: center;
    flex-wrap: wrap;
    padding-bottom: 10px;
    overflow-y: auto;
    scrollbar-width: none;
}

.house {
    width: 22vmin;
    height: 22vmin;
    max-width: 160px;
    max-height: 160px;
    background-image: url('assets/house_base.png');
    background-size: contain;
    background-repeat: no-repeat;
    background-position: center bottom;
    transition: transform 0.2s;
    position: relative;
    /* Added for ::after pseudo-element */
}

.house.drag-over {
    transform: scale(1.1);
}

/* Color Filters applied via JS to support 10 levels dynamically */

/* Cats Area */
#cats-container {
    flex: 1;
    /* Cats area is slightly smaller */
    display: flex;
    justify-content: space-around;
    align-items: flex-start;
    flex-wrap: wrap;
    padding: 10px;
    background: rgba(255, 255, 255, 0.3);
    border-radius: 20px;
    overflow-y: auto;
}

.cat {
    width: 14vmin;
    height: 14vmin;
    max-width: 90px;
    max-height: 90px;
    background-size: contain;
    background-repeat: no-repeat;
    background-position: center;
    cursor: grab;
    z-index: 100;
    transition: transform 0.1s;
    touch-action: none;
    /* Critical for custom touch handling */
}

.cat:active {
    cursor: grabbing;
    transform: scale(1.2);
}

.cat.matched {
    opacity: 0;
    /* Hide from bottom container when matched (or move logic) */
    pointer-events: none;
}

/* --- Level Select Screen --- */
#level-select-screen {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 200;
}

.level-select-content {
    background: #fff9e6;
    padding: 30px;
    border-radius: 30px;
    text-align: center;
    width: 85%;
    max-width: 400px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
    border: 5px solid #ffcc00;
}

#levels-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(60px, 1fr));
    gap: 12px;
    margin: 25px 0;
    max-height: 60vh;
    overflow-y: auto;
    padding: 5px;
}

.level-btn {
    aspect-ratio: 1/1;
    border-radius: 12px;
    border: none;
    background: #ffcc00;
    color: #664400;
    font-weight: bold;
    font-size: 1.2rem;
    cursor: pointer;
    display: flex;
    justify-content: center;
    align-items: center;
    transition: all 0.2s;
    box-shadow: 0 4px 0 #ccaa00;
}

.level-btn:hover {
    transform: scale(1.05);
}

.level-btn.locked {
    background: #ccc;
    color: #888;
    cursor: not-allowed;
    box-shadow: 0 4px 0 #999;
}

.level-btn.completed {
    background: #4CAF50;
    color: white;
    box-shadow: 0 4px 0 #2e7d32;
}

/* Win Screen */
#win-screen {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 1000;
}

.hidden {
    display: none !important;
}

.win-content {
    background: white;
    padding: 2rem;
    border-radius: 20px;
    text-align: center;
    animation: popIn 0.5s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

/* --- Win Screen Enhancements --- */
#star-container {
    font-size: 4rem;
    margin-bottom: 15px;
    animation: starPop 0.6s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

@keyframes starPop {
    0% {
        transform: scale(0) rotate(-180deg);
        opacity: 0;
    }

    100% {
        transform: scale(1) rotate(0deg);
        opacity: 1;
    }
}

/* --- House Feedback --- */
.house.completed {
    animation: housePulse 0.5s ease-out;
}

@keyframes housePulse {
    0% {
        transform: scale(1);
    }

    50% {
        transform: scale(1.1);
        filter: brightness(1.3);
    }

    100% {
        transform: scale(1);
    }
}

.house::after {
    display: none;
    content: '❤️';
    position: absolute;
    top: -20px;
    left: 50%;
    transform: translateX(-50%);
    font-size: 1.5rem;
    animation: heartFly 1s ease-out forwards;
}

.house.completed::after {
    display: block;
}

@keyframes heartFly {
    0% {
        transform: translate(-50%, 0) scale(0.5);
        opacity: 1;
    }

    100% {
        transform: translate(-50%, -40px) scale(1.5);
        opacity: 0;
    }
}

.win-content h2 {
    font-size: 3rem;
    color: #FF5722;
    margin-bottom: 20px;
}

button {
    font-size: 1.5rem;
    padding: 10px 30px;
    background: #4CAF50;
    color: white;
    border: none;
    border-radius: 50px;
    cursor: pointer;
    box-shadow: 0 4px #2E7D32;
}

button:active {
    box-shadow: 0 0 #2E7D32;
    transform: translateY(4px);
}

@keyframes popIn {
    from {
        transform: scale(0);
    }

    to {
        transform: scale(1);
    }
}

@media (max-width: 600px) {
    .house {
        width: 28vmin;
        height: 28vmin;
    }

    .cat {
        width: 18vmin;
        height: 18vmin;
    }

    h1 {
        font-size: 1.5rem;
    }
}