/* Reset and Base Styles */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    user-select: none;
    -webkit-tap-highlight-color: transparent;
}

html, body {
    width: 100%;
    height: 100%; /* Fixes 100vh mobile iframe issues */
    font-family: 'Fredoka', sans-serif;
    background: radial-gradient(circle, #82C91E 0%, #5C940D 100%); /* Vibrant grass green */
    overflow: hidden;
    touch-action: none;
    margin: 0;
}

#game-container {
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

/* Header */
#game-header {
    display: flex;
    justify-content: space-between;
    padding: 15px 25px;
    color: #5C4E43; /* Warm dark brown */
    font-size: 1.5rem;
    font-weight: 700;
    z-index: 10;
    align-items: center;
}

.level-info, .score-info {
    background-color: #4A2E1B; /* Dark Coffee Brown */
    color: #FFF;
    padding: 6px 20px;
    border-radius: 4px; /* Slight pixel curve */
    border: 4px solid #EBE3D5; /* Cream border */
    box-shadow: 4px 4px 0 rgba(0,0,0,0.3); /* Hard pixel shadow */
    font-family: 'Pixelify Sans', sans-serif;
    letter-spacing: 2px;
}

/* Board Area (Tile Stacks) */
#board-area {
    flex: 1;
    position: relative;
    margin: 10px;
}

/* Tiles (Cards) */
.tile {
    width: 60px;
    height: 60px;
    position: absolute;
    background-color: #FFFFFF; /* Bright white top */
    border-radius: 12px; /* Smooth square */
    border: 1px solid #D1C5B4; 
    
    /* Inset 2px white gap, 4px vibrant inner border, 6px solid bottom edge for 3D block */
    box-shadow: inset 0 0 0 2px #FFFFFF, inset 0 0 0 4px #FF7A59, 0 6px 0 #A8704A, 0 8px 6px rgba(0,0,0,0.3); 
    
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 34px;
    cursor: pointer;
    transition: transform 0.1s ease, box-shadow 0.1s ease, filter 0.2s ease, top 0.3s ease, left 0.3s ease;
    transform-origin: center bottom;
}

.tile.blocked {
    filter: brightness(0.65) contrast(1.1);
    cursor: not-allowed;
}

.tile:active:not(.blocked) {
    transform: translateY(6px); /* Compress the 3D block */
    box-shadow: inset 0 0 0 2px #FFFFFF, inset 0 0 0 4px #FF7A59, 0 0px 0 #A8704A, 0 2px 2px rgba(0,0,0,0.3); 
}

.tile.removing {
    transform: scale(0);
    opacity: 0;
    transition: all 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

/* Selection Bar Area */
#selection-area {
    height: 120px;
    padding: 0 10px 20px 10px;
    display: flex;
    justify-content: center;
    align-items: flex-end;
    z-index: 20;
}

#selection-bar {
    width: 100%;
    max-width: 500px;
    height: 90px;
    background-color: #8C5A35; /* Wood/leather brown tray matching ref */
    border-radius: 16px;
    border: 3px solid #633C1F;
    box-shadow: inset 0 6px 0 rgba(0,0,0,0.2), 0 8px 15px rgba(0,0,0,0.2);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 0 15px;
    padding-top: 6px; /* Offset for inset shadow */
    position: relative;
}

.slot {
    width: 60px;
    height: 60px;
    background-color: #EAE3D2; /* Slightly darker cream for empty slot */
    border-radius: 12px;
    border: 2px dashed #C4B9AA;
    box-sizing: border-box;
}

/* Screen Management */
.screen {
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    z-index: 50;
    transition: opacity 0.3s ease;
    background: radial-gradient(circle, #82C91E 0%, #5C940D 100%);
}

/* Cute decorative elements for Start Screen */
#start-screen {
    background-color: #EBE3D5; /* Beige/Parchment */
    border: 12px solid #4A2E1B;
    background-image: none;
}

.game-title {
    font-size: 5rem; /* Larger for pixel font */
    color: #4A2E1B;
    margin-bottom: 5px;
    font-weight: 700;
    font-family: 'Pixelify Sans', sans-serif;
    text-shadow: 4px 4px 0px #D3AD81; /* Coffee/Beige outline */
}

.subtitle {
    font-size: 1.8rem;
    color: #8C5A35; /* Caramel brown */
    margin-bottom: 50px;
    font-weight: 600;
    font-family: 'Pixelify Sans', sans-serif;
    text-shadow: 2px 2px 0px #EBE3D5;
}

#btn-play, #modal-action-btn {
    background-color: #D3AD81; /* Coffee Beige */
    color: #FFF;
    border: 6px solid #4A2E1B;
    padding: 15px 45px;
    font-size: 1.8rem;
    font-weight: 700;
    border-radius: 8px; /* Pixel art rounded rects */
    cursor: pointer;
    box-shadow: 0 8px 0 #4A2E1B; /* Solid chunky bottom */
    transition: transform 0.1s, box-shadow 0.1s;
    font-family: 'Pixelify Sans', sans-serif;
    letter-spacing: 2px;
    text-shadow: 2px 2px 0px #4A2E1B;
}

#btn-play:active, #modal-action-btn:active {
    transform: translateY(8px);
    box-shadow: 0 0px 0 #4A2E1B;
}

.hidden {
    display: none !important;
}

/* Modals */
#modal-overlay {
    position: absolute;
    top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(92, 78, 67, 0.4); /* Brown tinted overlay */
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 100;
    visibility: visible;
    opacity: 1;
    transition: opacity 0.3s;
    backdrop-filter: blur(2px);
}

#modal-overlay.hidden {
    visibility: hidden;
    opacity: 0;
}

#modal-content {
    background: #EBE3D5; /* Parchment beige */
    padding: 40px 30px;
    border-radius: 8px; /* Pixel art rigid corners */
    border: 8px solid #4A2E1B; /* Thick retro stroke */
    text-align: center;
    width: 85%;
    max-width: 350px;
    box-shadow: 8px 8px 0 rgba(74, 46, 27, 0.4); /* Solid pixel shadow */
    animation: bounceIn 0.5s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    position: relative;
    font-family: 'Pixelify Sans', sans-serif;
}

/* Ribbon/Tag for Modal Title */
#modal-title {
    background-color: #D3AD81;
    color: #FFF;
    font-size: 2rem;
    padding: 10px 20px;
    border-radius: 4px;
    border: 4px solid #4A2E1B;
    position: absolute;
    top: -30px;
    left: 50%;
    transform: translateX(-50%);
    white-space: nowrap;
    text-shadow: 2px 2px 0px #4A2E1B;
}

#modal-message {
    font-size: 1.5rem;
    color: #4A2E1B;
    margin-top: 20px;
    margin-bottom: 30px;
    font-weight: 600;
    line-height: 1.4;
}

#modal-action-btn {
    background-color: #8C5A35; /* Caramel/wood brown */
    width: 100%;
}

@keyframes bounceIn {
    0% { transform: scale(0.3); opacity: 0; }
    50% { transform: scale(1.05); opacity: 1; }
    70% { transform: scale(0.9); }
    100% { transform: scale(1); }
}