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

body {
    height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    background: #eef2f7;
}

.watch {
    width: 350px;
    height: 350px;
    background: white;
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    box-shadow: 
        10px 10px 25px rgba(0,0,0,0.1),
        -10px -10px 25px rgba(255,255,255,0.8);
    position: relative;
}


.inner-watch {
    text-align: center;
    width: 80%;
}

.inner-watch h2 {
    font-size: 14px;
    letter-spacing: 3px;
    color: #555;
    margin-bottom: 20px;
}

.time-display {
    font-size: 42px;
    font-weight: bold;
    color: #222;
    margin-bottom: 25px;
}


.buttons {
    display: flex;
    justify-content: center;
    gap: 10px;
}

.buttons button {
    padding: 6px 14px;
    border-radius: 20px;
    border: none;
    font-size: 12px;
    cursor: pointer;
    transition: 0.3s ease;
}


.start {
    background: #4CAF50;
    color: white;
}

.stop {
    background: #f44336;
    color: white;
}

.reset {
    background: #2196F3;
    color: white;
}

.buttons button:hover {
    transform: scale(1.08);
}


@media (max-width: 400px) {
    .watch {
        width: 280px;
        height: 280px;
    }

    .time-display {
        font-size: 32px;
    }
}