@import url('https://fonts.googleapis.com/css2?family=Bytesized&family=Orbitron:wght@600&display=swap');

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: "Bytesized", sans-serif;
}

body {
    width: 100%;
    height: 100vh;
    background: linear-gradient(45deg, #15677b, #670f5d);
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 20px;
    text-align: center;
    color: #fff;
}

.container {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.app-title {
    font-family: 'Orbitron', sans-serif;
    font-size: 48px;
    color: #fcd34d;
    text-shadow: 2px 2px 5px #000;
    margin-bottom: 5px;
}

.tagline {
    font-size: 16px;
    font-style: italic;
    color: #f1f1f1;
    margin-bottom: 20px;
}

.calculator {
    border: 13px solid #15688e;
    padding: 15px;
    border-radius: 15px;
    background: rgba(0, 0, 0, 0.2);
    box-shadow: 8px 8px 20px rgba(113, 115, 119, 0.5);
}

input {
    width: 100%;
    padding: 10px;
    margin: 10px 0;
    background: transparent;
    box-shadow: 0 3px 15px rgba(113, 115, 119, 0.5);
    font-size: 40px;
    text-align: right;
    color: #fff;
    border: none;
    border-radius: 15px;
}

input::placeholder {
    color: #7a919c;
}

button {
    border: none;
    width: 60px;
    height: 60px;
    margin: 10px;
    font-size: 26px;
    font-weight: bold;
    border-radius: 50%;
    cursor: pointer;
    transition: 0.3s;
    background-color: rgba(255, 255, 255, 0.1);
    color: #fff;
}

button:hover {
    background-color: #960786;
}

button:active {
    box-shadow: 8px 8px 15px rgba(113, 115, 119, 0.5);
}

.equalButton {
    background: #ff8800;
    color: white;
}

.operator {
    background: #f8d671;
    color: black;
}

.nicheke3 {
    background: #a8eeff;
    color: #000;
}