:root {
    --primary: #FF512F;
    --secondary: #DD2476;
    --text-main: #FFFFFF;
    --glass-bg: rgba(20, 10, 5, 0.6);
    --glass-border: rgba(255, 255, 255, 0.1);
}

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

body {
    font-family: 'Roboto', sans-serif;
    /* Immagine di sfondo personalizzata (con fallback a gradiente) */
    background: url('sfondo.jpg') center center / cover no-repeat,
                linear-gradient(to bottom, #110e2f 0%, #46203a 30%, #c44d41 60%, #e0723a 80%, #f69440 100%);
    overflow: hidden;
    color: var(--text-main);
    touch-action: none;
}

/* Background grid/overlay for military tech vibe combined with desert theme */
body::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        linear-gradient(rgba(255, 255, 255, 0.05) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.05) 1px, transparent 1px);
    background-size: 50px 50px;
    z-index: -1;
    pointer-events: none;
}

#app {
    position: relative;
    width: 100vw;
    height: 100vh;
}

canvas {
    display: block;
    width: 100%;
    height: 100%;
    position: absolute;
    top: 0;
    left: 0;
    z-index: 1;
    cursor: crosshair;
}

#ui-layer {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 10;
    pointer-events: none;
    display: flex;
    flex-direction: column;
}

#top-bar {
    display: flex;
    justify-content: space-between;
    padding: 20px 40px;
    transition: opacity 0.5s ease;
}

#top-bar.hidden {
    opacity: 0;
    pointer-events: none;
}

.stat-box {
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    border: 1px solid var(--glass-border);
    border-radius: 12px;
    padding: 15px 30px;
    display: flex;
    flex-direction: column;
    align-items: center;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
}

.stat-box .label {
    font-family: 'Orbitron', sans-serif;
    font-size: 0.8rem;
    letter-spacing: 2px;
    color: #ffd2b3;
    margin-bottom: 5px;
}

.stat-box span:not(.label) {
    font-family: 'Orbitron', sans-serif;
    font-size: 2.5rem;
    font-weight: 700;
    color: #fff;
    text-shadow: 0 0 10px rgba(255, 81, 47, 0.8);
}

.screen {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background: var(--glass-bg);
    backdrop-filter: blur(15px);
    border: 1px solid var(--glass-border);
    border-radius: 20px;
    padding: 50px;
    text-align: center;
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.5);
    pointer-events: auto;
    transition: all 0.5s ease;
    width: 90%;
    max-width: 500px;
}

.screen.hidden {
    opacity: 0;
    pointer-events: none;
    transform: translate(-50%, -60%);
}

.screen h1 {
    font-family: 'Orbitron', sans-serif;
    font-size: 3rem;
    background: -webkit-linear-gradient(#FF512F, #F09819);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 20px;
    text-transform: uppercase;
}

.screen p {
    font-size: 1.1rem;
    line-height: 1.5;
    margin-bottom: 30px;
    color: #e2e8f0;
}

.registration input {
    width: 100%;
    padding: 12px 20px;
    margin-bottom: 20px;
    border-radius: 8px;
    border: 1px solid var(--glass-border);
    background: rgba(0,0,0,0.3);
    color: white;
    font-family: 'Orbitron', sans-serif;
    font-size: 1.2rem;
    text-align: center;
    outline: none;
    transition: all 0.3s ease;
}

.registration input:focus {
    border-color: var(--primary);
    box-shadow: 0 0 10px rgba(255, 81, 47, 0.5);
}

.target-selection h3 {
    margin-bottom: 15px;
    font-family: 'Orbitron', sans-serif;
    color: #e2e8f0;
    font-size: 1rem;
}

.targets-container {
    display: flex;
    justify-content: center;
    gap: 15px;
    margin-bottom: 25px;
}

.target-btn {
    cursor: pointer;
    position: relative;
}

.target-btn input {
    display: none;
}

.target-thumb {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    border: 2px solid transparent;
    background-size: cover;
    background-position: center;
    transition: all 0.3s ease;
    background-color: rgba(255,255,255,0.1);
    display: flex;
    align-items: center;
    justify-content: center;
}

.default-thumb {
    border: 2px solid #ff2222;
    background: radial-gradient(circle, #ff2222 20%, transparent 20%);
}

.custom-thumb span {
    font-size: 2rem;
    color: var(--primary);
}

.custom-thumb input {
    display: none;
}

.target-btn input:checked + .target-thumb {
    border-color: var(--primary);
    box-shadow: 0 0 15px rgba(255, 81, 47, 0.8);
    transform: scale(1.1);
}

.action-buttons {
    display: flex;
    flex-direction: column;
    gap: 15px;
    margin-top: 10px;
}

#leaderboard-list {
    list-style: none;
    text-align: left;
    margin-bottom: 30px;
    max-height: 250px;
    overflow-y: auto;
    padding-right: 10px;
}

#leaderboard-list li {
    display: flex;
    justify-content: space-between;
    padding: 10px;
    border-bottom: 1px solid rgba(255,255,255,0.1);
    font-family: 'Orbitron', sans-serif;
}

#leaderboard-list li:nth-child(1) { color: gold; font-size: 1.2rem; font-weight: bold; }
#leaderboard-list li:nth-child(2) { color: silver; font-size: 1.1rem; }
#leaderboard-list li:nth-child(3) { color: #cd7f32; font-size: 1.05rem; }

#leaderboard-list::-webkit-scrollbar {
    width: 6px;
}
#leaderboard-list::-webkit-scrollbar-thumb {
    background: var(--primary);
    border-radius: 3px;
}

.final-score {
    font-family: 'Orbitron', sans-serif;
    font-size: 2rem;
    margin-bottom: 30px;
}

#final-score-value {
    font-size: 4rem;
    color: var(--primary);
    text-shadow: 0 0 20px rgba(255, 81, 47, 0.5);
    display: block;
}

.btn {
    font-family: 'Orbitron', sans-serif;
    border: none;
    padding: 15px 30px;
    font-size: 1.2rem;
    font-weight: 700;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s ease;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.primary-btn {
    background: linear-gradient(45deg, var(--primary), var(--secondary));
    color: white;
    box-shadow: 0 4px 15px rgba(255, 81, 47, 0.4);
    min-width: 200px;
}

.primary-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(255, 81, 47, 0.6);
}

.secondary-btn {
    background: rgba(255, 255, 255, 0.1);
    color: white;
    border: 1px solid rgba(255, 255, 255, 0.2);
    font-size: 0.9rem;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.secondary-btn:hover {
    background: rgba(255, 255, 255, 0.2);
}

.hidden {
    display: none !important;
}