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

    transition: all 0.25s ease;
}

body{
    background-color: #121212;

    color: #eeeeee;

    font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;

    min-height: 100vh;

    display: flex;
    flex-direction: column;
}

/* NAVBAR */

.navbar{
    position: fixed;

    top: 0;
    left: 0;

    width: 100%;

    display: flex;
    justify-content: space-between;
    align-items: center;

    padding: 0.9rem 2rem;

    background: rgba(18,18,18,0.75);

    backdrop-filter: blur(10px);

    border-bottom: 1px solid #2b2b2b;

    z-index: 1000;
}

.logo{
    font-size: 1.5rem;
    font-weight: bold;

    color: #4f94d4;

    user-select: none;
}

.navbar ul{
    list-style: none;

    display: flex;
    gap: 1.5rem;
}

.navbar ul li a{
    text-decoration: none;

    color: #dddddd;

    font-weight: 600;
}

.navbar ul li a:hover{
    color: #4f94d4;
}

/* MAIN */

main{
    flex: 1;

    width: 100%;
    max-width: 1000px;

    margin: 0 auto;

    padding: 7rem 2rem 6rem;
}

/* HERO */

.hero{
    text-align: center;

    margin-bottom: 3rem;
}

.hero h1{
    font-size: 3rem;

    margin-bottom: 1rem;

    color: white;
}

.hero p{
    color: #aaaaaa;

    font-size: 1.15rem;

    line-height: 1.7;

    max-width: 700px;

    margin: 0 auto;
}

/* TOOL */

.tool{
    background: rgba(255,255,255,0.03);

    border: 1px solid #2f2f2f;

    border-radius: 24px;

    padding: 2rem;

    backdrop-filter: blur(12px);

    display: flex;
    flex-direction: column;
    align-items: center;

    gap: 1.2rem;
}

/* INPUT */

.tool input{
    width: 100%;
    max-width: 450px;

    background-color: #1d1d1d;

    color: white;

    border: 2px solid #2e2e2e;

    border-radius: 14px;

    padding: 1rem 1.2rem;

    font-size: 1rem;

    outline: none;
}

.tool input:focus{
    border-color: #4f94d4;

    box-shadow: 0 0 0 5px rgba(79,148,212,0.15);
}

/* BUTTON */

.tool button{
    background-color: #4f94d4;

    color: white;

    border: none;

    border-radius: 14px;

    padding: 1rem 2rem;

    font-size: 1rem;
    font-weight: bold;

    cursor: pointer;
}

.tool button:hover{
    background-color: #3d82c4;

    transform: translateY(-2px);

    box-shadow: 0 10px 20px rgba(79,148,212,0.2);
}

/* RESULT */

.result{
    width: 100%;

    margin-top: 1rem;

    display: flex;
    flex-wrap: wrap;
    justify-content: center;

    gap: 1rem;
}

.placeholder{
    color: #777777;

    padding: 1rem;
}

/* TIME BOX */

.time-box{
    background: #1b1b1b;

    border: 1px solid #2f2f2f;

    border-radius: 18px;

    padding: 1.4rem;

    min-width: 120px;

    text-align: center;
}

.time-box:hover{
    transform: translateY(-4px);

    border-color: #4f94d4;
}

.number{
    display: block;

    font-size: 2rem;
    font-weight: bold;

    color: #4f94d4;

    margin-bottom: 0.4rem;
}

.label{
    color: #aaaaaa;

    font-size: 0.95rem;
}

/* FOOTER */

.footer{
    width: 100%;

    text-align: center;

    padding: 1.5rem;

    color: #777777;

    border-top: 1px solid #1f1f1f;
}

/* RESPONSIVE */

@media (max-width: 700px){

    .navbar{
        padding: 0.9rem 1rem;
    }

    .navbar ul{
        gap: 0.8rem;
    }

    .navbar ul li a{
        font-size: 0.9rem;
    }

    .hero h1{
        font-size: 2.1rem;
    }

    .hero p{
        font-size: 1rem;
    }

    .tool{
        padding: 1.5rem;
    }

    .time-box{
        min-width: 90px;

        padding: 1rem;
    }

    .number{
        font-size: 1.5rem;
    }

}