* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
body {
    font-family: Verdana, sans-serif;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    background: linear-gradient(135deg, #1e3c72 0%, #2a5298 50%, #667eea 100%);
}


.container {
    color: white;
    background: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(20px);
    box-shadow: 0 25px 45px rgba(0, 0, 0, 0.3), 0 0 0 2px rgba(255, 255, 255, 0.2);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 2rem;
    padding: 3rem 2.5rem;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-radius: 32px;
    max-height: 500px;
    width: min(90vw, 420px);
    transition: all 0.4s ease;
}
#title {
    font-size: 3em;
    font-weight: 700;
    opacity: 0.95;
    text-shadow: 0 4px 8px rgba(0, 0, 0, 0.35);
}
#count {
    font-size: 4em;
    font-weight: 800;
    background: linear-gradient(135deg, #0c0c0c 0%, #1a1a2e 50%, #16213e 100%);
    border: 2px solid rgba(255, 255, 255, 0.5);
    width: 200px;
    height: 200px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 20px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2),
                0 20px 40px rgba(0, 0, 0, 0.3);
    transition: all 0.3s ease;
}


.btns {
    display: flex;
    justify-content: space-between;
    gap: 1.5rem;
    width: 100%;
}
.btn {
    flex: 1;
    padding: 1rem;
    font-size: 1.8rem;
    font-weight: 700;
    border: none;
    border-radius: 25px;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.3);
    display: flex;
    align-items: center;
    justify-content: center;
}
#plusBtn {
    background: linear-gradient(135deg, #00e676 0%, #00a86b 100%);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.4);
}
#minusBtn {
    background: linear-gradient(135deg, #ff6b6b 0%, #ee5a52 100%);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.4);
}
#resetBtn {
    background: linear-gradient(135deg, #feca57 0%, #e0ecba 100%);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.4);
}
.btn:hover {
    transform: translateY(-4px) scale(1.02);
    filter: brightness(0.8);
}