/* universal and body */
* {
    /* outline: 2px solid red; */
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    height: 100dvh;

    background-color: rgb(53 64 142);
    color: rgb(53 64 142);
    font-family: Arial, Helvetica, sans-serif;

    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}


/* main-container and table */
.main-container {
    height: auto;
    width: 90%;
    max-width: 710px;

    background-color: white;
    border-radius: 10px;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.35);

    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 1.5em;
    padding: 1.5em;
    padding-top: 2.5em;
}

.main-container h1 {
    font-size: clamp(20px, 8vw, 32px);
}

.scroller-container {
    width: 100%;
}

.table-container {
    box-sizing: border-box;
    width: 100%;
    border-collapse: separate;
    border-spacing: 0;
    text-align: center;
}

.header-row-container th, .data-row-container td {
    border: 1px solid rgb(36, 36, 36);
    font-size: clamp(12px, 4vw, 16px);

}

.header-row-container {
    background-color: #FFD700;
    height: 50px;
    font-weight: bolder;

    position: sticky;
    top: 0;
    z-index: 10;
}

.data-row-container {
    height: 55px;
}

.header-row-container th:nth-child(4), 
.data-row-container td:nth-child(4) {
    width: 50px;
}

.header-row-container th:nth-child(4) {
    background-color: white;
    border: none;
}

.data-row-container td:nth-child(4) {
    background-color: red;
    border-left: none;
}


/* buttons */
button {
    border: none;
    border-radius: 10px;
    color: white;
    font-size: clamp(14px, 6vw, 23px);
    font-weight: bold;
}

.delete-course-button {
    background-color: red;
    width: 35px;
    height: 35px;
}

.buttons-container {
    height: 118px;
    width: 100%;
    display: flex;
    flex-direction: column;
    gap: 0.5em;
}

.adjacent-buttons-container {
    height: 45%;
    display: flex;
    justify-content: space-between;
}

.add-course-button {
    width: 74%;
    background-color: rgb(53 64 142);
}

.reset-button {
    width: 25%;
    background-color: red;
}

.calculate-button {
    height: 55%;
    background-color: #2C3575;
    font-size: clamp(16px, 6vw, 25px);
}


/* button hover */
button:hover {
    transform: scale(1.03);
    transition: transform 0.2s ease, box-shadow 0.2s ease, background-color 0.2s ease;
    cursor: pointer;
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.4);
}

.delete-course-button:hover, .reset-button:hover {
    background-color: rgb(132, 7, 7);
}

.add-course-button:hover {
    background-color: #1c2569;
}

.calculate-button:hover {
    background-color: #19236f;
}


/* inputs */
input {
    height: 35px;
    width: 70%;

    max-width: 100px;
    min-width: 50px;
    color: black;
    text-align: center;
    border-radius: 5px;
    border: 2px solid rgba(0,0,0,0.6);
    font-size: clamp(12px, 3vw, 16px);
}

.course-numbering-cell {
    border: none;
}

input:hover {
    border: 2px solid #3f51d5;
}

input:focus {
    opacity: 90%;
}

input::placeholder {
    color: black;
    opacity: 100%;
}

input:focus::placeholder {
    opacity: 20%;
}


/* dynamic CSS - scrolling logic */
.scroller-container {
    overflow-y: hidden;
}

.scroller-enabled {
    overflow-y: scroll;
}


/* modal */
.modal-container {
    height: 100vh;
    width: 100vw;
    
    display: none;
    justify-content: center;
    align-items: center;

    position: fixed;
    background-color: rgba(0,0,0,0.5);
    z-index: 10;

}

.modal-content {
    height: 35%;
    width: 95%;
    max-width: 470px;
    
    background-color: white;
    border-radius: 10px;

    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 2em;
    padding: 2em;
}

.modal-close-button {
    max-height: 30px;
    height: 25%;
    width: 30%;
    border: none;
    border-radius: 10px;
    background-color:rgb(53 64 142);
}

.modal-content p {
    text-align: center;

}