:root {
    --bg-color: #e0f2fe;
    --text-color: #0c4a6e;
    --primary-color: #0ea5e9;
    --accent-color: #f43f5e;
    --balloon-size: 100px;
    --font-main: 'Fredoka', sans-serif;

    /* Shape Colors */
    --color-circle: #3b82f6;
    /* Blue */
    --color-heart: #ef4444;
    /* Red */
    --color-star: #eab308;
    /* Yellow */
    --color-diamond: #a855f7;
    /* Purple */
    --color-triangle: #22c55e;
    /* Green */
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: var(--font-main);
    background-color: var(--bg-color);
    color: var(--text-color);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    overflow-x: hidden;
}

.app-container {
    width: 100%;
    max-width: 900px;
    padding: 1rem;
    display: flex;
    flex-direction: column;
    height: 100vh;
}

header {
    text-align: center;
    margin-bottom: 1rem;
}

h1 {
    font-size: 2.5rem;
    color: var(--primary-color);
    text-shadow: 2px 2px 0px rgba(255, 255, 255, 0.5);
}

/* Controls */
.controls {
    border: none;
    padding: 0.5rem 1.2rem;
    border-radius: 20px;
    font-family: var(--font-main);
    font-weight: 600;
    cursor: pointer;
    transition: transform 0.1s;
}

.btn:active {
    transform: scale(0.95);
}

.btn.secondary {
    background: #fdfeff25;
    border-radius: 20px;
    padding: 0.5rem 1.2rem;
}

.upload-btn-wrapper {
    position: relative;
    overflow: hidden;
    display: inline-block;
}

.upload-btn-wrapper input[type=file] {
    font-size: 100px;
    position: absolute;
    left: 0;
    top: 0;
    opacity: 0;
    cursor: pointer;
    width: 100%;
    height: 100%;
}

.shape-selector {
    display: flex;
    gap: 0.5rem;
    background: #f1f5f9;
    padding: 0.2rem;
    border-radius: 20px;
}

.shape-btn {
    background: transparent;
    border: none;
    font-size: 1.5rem;
    padding: 0.5rem 0.5rem;
    border-radius: 10px;
    cursor: pointer;
    transition: background 0.2s, transform 0.2s;
}

.shape-btn:hover {
    background: rgba(0, 0, 0, 0.05);
    transform: scale(1.1);
}

.shape-btn.active {
    background: white;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    transform: scale(1.1);
}

.preset-selector {
    display: flex;
    gap: 0.5rem;
    background: #f1f5f9;
    padding: 0.2rem;
    border-radius: 20px;
    margin-bottom: 0.5rem;
}

.preset-btn {
    background: transparent;
    border: none;
    font-size: 1.5rem;
    padding: 0.2rem 0.5rem;
    border-radius: 10px;
    cursor: pointer;
    transition: background 0.2s, transform 0.2s;
}

.preset-btn:hover {
    background: rgba(0, 0, 0, 0.05);
    transform: scale(1.1);
}

/* Game Area */
#game-area {
    flex: 1;
    display: flex;
    justify-content: center;
    align-items: flex-start;
    /* Align top so scrolling works better */
    overflow-y: hidden;
    overflow-x: hidden;
    background: rgba(255, 255, 255, 0.5);
    border-radius: 20px;
    padding: 1rem;
    box-shadow: inset 0 2px 10px rgba(0, 0, 0, 0.05);
}

#balloon-grid {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    align-content: flex-start;
    gap: 4.8px;
    /* Small gap between balloons */
    width: 100%;
    height: auto;
}

.placeholder-text {
    font-size: 1.5rem;
    opacity: 0.5;
    text-align: center;
    width: 100%;
    margin-top: 2rem;
}

/* Balloon Styles */
.balloon {
    width: var(--balloon-size);
    height: var(--balloon-size);
    position: relative;
    cursor: pointer;
    transition: transform 0.1s;

    /* Image Repeats on EACH balloon */
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;

    /* Default Color (overridden by specific shape classes if no image) */
    background-color: var(--color-circle);

    /* Use drop-shadow so it follows the clip-path shape */
    filter: drop-shadow(2px 4px 6px rgba(0, 0, 0, 0.3));
}

/* Shape Colors when no image */
.grid.circle .balloon {
    background-color: var(--color-circle);
}

.grid.heart .balloon {
    background-color: var(--color-heart);
}

.grid.star .balloon {
    background-color: var(--color-star);
}

.grid.diamond .balloon {
    background-color: var(--color-diamond);
}

.grid.triangle .balloon {
    background-color: var(--color-triangle);
}

/* 3D Overlay - Enhanced for "Darker Outlines" */
.balloon::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: radial-gradient(circle at 30% 30%,
            rgba(255, 255, 255, 0.8) 0%,
            rgba(255, 255, 255, 0.1) 25%,
            rgba(0, 0, 0, 0.1) 60%,
            rgba(0, 0, 0, 0.6) 90%,
            rgba(0, 0, 0, 0.8) 100%);
    pointer-events: none;
    border-radius: inherit;
    /* Follows the shape */
}

.balloon:hover {
    transform: scale(1.05);
    z-index: 10;
}

.balloon:active {
    transform: scale(0.95);
}

/* Shapes via SVG ClipPath */
.grid.circle .balloon,
.grid.circle .balloon::after {
    border-radius: 50%;
}

.grid.heart .balloon,
.grid.heart .balloon::after {
    clip-path: url(#heart-clip);
}

.grid.star .balloon,
.grid.star .balloon::after {
    clip-path: url(#star-clip);
}

.grid.diamond .balloon,
.grid.diamond .balloon::after {
    clip-path: url(#diamond-clip);
}

.grid.triangle .balloon,
.grid.triangle .balloon::after {
    clip-path: url(#triangle-clip);
}

/* Forceful Pop Animation */
.balloon.popped {
    animation: pop-burst 0.15s ease-out forwards;
    pointer-events: none;
}

@keyframes pop-burst {
    0% {
        transform: scale(1);
        opacity: 1;
    }

    50% {
        transform: scale(1.2);
        opacity: 0.8;
    }

    100% {
        transform: scale(1.5);
        opacity: 0;
    }
}

/* Selectors Wrapper */
.selectors-wrapper {
    display: inline-flex;
    align-items: center;
    gap: 1rem;
    vertical-align: middle;
    margin: 0 0.5rem;
}

/* Custom Dropdown */
.custom-dropdown {
    position: relative;
    display: inline-block;
}

.dropdown-btn {
    background: #f1f5f9;
    border: none;
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-family: var(--font-main);
    font-weight: 600;
    cursor: pointer;
    display: flex;
    width: 180px;
    height: 45px;
    align-items: center;
    gap: 0.5rem;
    font-size: 1rem;
    color: var(--text-color);
    transition: background 0.2s;
}

.dropdown-btn:hover {
    background: #e2e8f0;
}

.dropdown-content {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    background-color: white;
    min-width: 200px;
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.2);
    border-radius: 12px;
    z-index: 100;
    overflow: hidden;
    margin-top: 0.5rem;
}

.custom-dropdown.open .dropdown-content {
    display: block;
}

.dropdown-item {
    padding: 0.5rem 1rem;
    display: flex;
    align-items: center;
    gap: 0.8rem;
    cursor: pointer;
    transition: background 0.2s;
    color: var(--text-color);
}

.dropdown-item:hover {
    background-color: #f1f5f9;
}

.dropdown-item img {
    width: 30px;
    height: 30px;
    border-radius: 50%;
    object-fit: cover;
    border: 2px solid white;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

/* Responsive adjustments */
@media (max-width: 600px) {
    .selectors-wrapper {
        flex-direction: column;
        align-items: stretch;
    }

    .dropdown-btn {
        justify-content: space-between;
    }
}

/* Large Buttons */
#reset-btn,
.upload-btn-wrapper .btn {
    font-size: 1.5rem;
    padding: 0.25rem;
    /* 2.4rem; */
    border-radius: 30px;
}

/* Accessibility Focus Styles */
.dropdown-item:focus {
    background-color: #e2e8f0;
    outline: 2px solid var(--primary-color);
    outline-offset: -2px;
}

.shape-btn:focus {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

.dropdown-btn:focus {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

.btn:focus {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}