body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    background-color: #f0f0f0;
}

.modal {
    width: 1200px; /* Increased width for a bigger page */
    margin: 50px auto;
    background: white;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0px 0px 15px rgba(0, 0, 0, 0.2);
}

.header {
    background-color: #007bff;
    color: white;
    padding: 20px; /* Increased padding */
    font-size: 26px; /* Increased font size */
    font-weight: bold;
    text-align: center;
}

.close-icon {
    cursor: pointer; /* Change cursor to pointer */
    margin-left: 15px; /* Space between text and icon */
    font-size: 15px; /* Adjust size as needed */
    color: #333; /* Change color as needed */
}

.form-container {
    max-width: 100%; /* Adjust max-width as needed */
    margin: 0 auto; /* Center the container */
    padding: 20px;
    background-color: #f8f9fa; /* Light background color */
    border-radius: 8px;
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.container {
    padding: 40px; /* Increased padding */
    display: grid;
    grid-template-columns: repeat(3, 1fr); /* 3 columns */
    gap: 25px; /* Increased gap between cards */
}

.card {
    padding: 25px; /* Increased padding */
    background-color: #f9f9f9;
    border: 1px solid #ddd;
    border-radius: 8px;
    text-align: center;
    cursor: pointer;
}

.card h2 {
    font-size: 20px; /* Increased font size */
    font-weight: bold;
    color: #333;
}

.card-image {
    width: 150px; /* Set desired width */
    height: 150px; /* Set desired height */
    object-fit: cover; /* Maintain aspect ratio and cover the box */
    display: block;
    margin: 0 auto; /* Center the images */
}

.badge {
    background-color: #6c757d;
    color: white;
    padding: 6px 10px; /* Increased padding */
    border-radius: 4px;
    font-size: 16px; /* Increased font size */
    margin-left: 5px;
}

p {
    color: #666;
    font-size: 18px; /* Increased font size */
}

button {
    margin-top: 15px;
    padding: 10px 15px; /* Increased padding */
    font-size: 16px; /* Increased font size */
    border: none;
    color: white;
    border-radius: 4px;
    cursor: pointer;
}

.continue-button {
    color: white; /* White text color */
    background-color: #007bff; /* Blue background color */
    border: none; /* Remove border */
    padding: 10px 20px; /* Add padding for better appearance */
    border-radius: 4px; /* Optional: round the edges */
    cursor: pointer;
}

.continue-button:hover {
    background-color: #0056b3; /* Darker blue on hover */
}

.input {
    width: 100%; /* Full width of container */
    padding: 10px;
    border: 1px solid #ced4da;
    border-radius: 4px;
    box-sizing: border-box; /* Prevent padding from increasing width */
}

.open-ide {
    position: relative;
    color: white;
    background-color: #2b3a42; /* Use your dark blue-gray color */
    border: none;
    padding: 10px 20px;
    border-radius: 4px;
    cursor: pointer;
    display: flex; /* Change to flex to align items */
    justify-content: center; /* Center items horizontally */
    align-items: center; /* Center items vertically */
    gap: 8px; /* Space between text and icon */
}

/* Add the arrow icon as a pseudo-element */
.open-ide::after {
    content: "➔"; /* Right arrow Unicode character */
    font-size: 1.2em;
    color: white; /* Same color as button text */
}

.card-image {
    width: 50px; /* Adjust the size as needed */
    height: auto;
    margin-bottom: 10px;
}

.description-row {
    display: flex;
    align-items: center; /* Center-aligns items vertically */
    gap: 10px; /* Adds space between the text and input field */
}

.frame {
    padding: 15px;
    border: 1px solid #ced4da; /* Light border to create a frame effect */
    border-radius: 8px;
    background-color: #f8f9fa; /* Light background color */
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.field, .description-row {
    display: flex;
    align-items: center;
    color: gray;
    gap: 10px;
}

.select {
    padding: 8px;
    border-radius: 4px;
}

.short-description {
    flex-shrink: 0;
    font-size: 0.9em; /* Make the text slightly smaller */
    color: #6c757d; /* Gray color */
}


.description-input {
    flex-grow: 1;
    padding: 8px;
    border-radius: 4px;
    border: 1px solid #ced4da;
    box-sizing: border-box;
}


.guide-button {
    color: grey; /* Grey text color */
    border: 1px solid grey; /* Grey border */
    background-color: transparent; /* Transparent background */
    padding: 10px 20px; /* Add padding for better appearance */
    border-radius: 4px; /* Optional: round the edges */
    cursor: pointer;
}

.guide-button:hover {
    background-color: #f0f0f0; /* Light grey background on hover */
}

/* Responsive điều chỉnh cho màn hình nhỏ hơn */
@media (max-width: 768px) {
    .modal {
        width: 90%; /* Chiều rộng modal 90% trên di động */
        margin: 20px auto; /* Khoảng cách trên và dưới giảm */
    }

    .header {
        font-size: 20px; /* Giảm kích thước font cho header */
        padding: 15px; /* Giảm padding cho header */
    }

    .container {
        padding: 20px; /* Giảm padding cho container */
        display: grid;
        grid-template-columns: repeat(2, 1fr); /* Hiển thị 2 cột trên màn hình nhỏ */
    }

    .card {
        padding: 15px; /* Giảm padding cho card */
    }

    .card h2 {
        font-size: 18px; /* Giảm kích thước font cho tiêu đề trong card */
    }

    .badge {
        font-size: 14px; /* Giảm kích thước font cho badge */
    }

    p {
        font-size: 16px; /* Giảm kích thước font cho đoạn văn */
    }

    .input, .select, .description-input {
        padding: 8px; /* Giảm padding cho các trường input */
    }

    button {
        font-size: 14px; /* Giảm kích thước font cho nút bấm */
    }

    .open-ide {
        font-size: 14px; /* Giảm kích thước font cho nút mở IDE */
    }

    .description-row {
        flex-direction: column; /* Đặt chiều dọc cho hàng mô tả */
    }

    .field {
        flex-direction: column; /* Đặt chiều dọc cho trường */
    }
}

@media (max-width: 480px) {
    .header {
        font-size: 18px; /* Giảm kích thước font cho header trên màn hình nhỏ */
    }

    .container {
        grid-template-columns: 1fr; /* Hiển thị 1 cột trên màn hình rất nhỏ */
    }

    .card {
        margin: 10px 0; /* Giảm khoảng cách giữa các card */
    }
}

.open-non {
    position: relative;
    color: white;
    background-color: #2b3a42; /* Use your dark blue-gray color */
    border: none;
    padding: 10px 20px;
    border-radius: 4px;
    cursor: pointer;
    display: flex; /* Change to flex to align items */
    justify-content: center; /* Center items horizontally */
    align-items: center; /* Center items vertically */
    gap: 10px; /* Space between text and icon */
}

#text-area {
    width: 100%;         /* Đặt độ rộng chiếm hết container */
    max-width: 100%;     /* Ngăn không cho vượt quá container */
    height: 150px;       /* Chiều cao cố định cho textarea */
    padding: 10px;       /* Khoảng cách trong textarea */
    border: 1px solid #ccc; /* Viền cho textarea */
    border-radius: 4px;  /* Bo tròn góc */
    font-size: 14px;     /* Kích thước chữ */
    box-sizing: border-box; /* Bao gồm cả padding trong kích thước */
    background-color: #f9f9f9; /* Màu nền */
}

.container_re3 {
    width: 100%;
    background-color: #ffffff;
    border: 1px solid #ddd;
    border-radius: 4px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    padding: 0px;
}

.toolbar {
    display: flex;
    align-items: center;
    padding: 2px;
    background-color: #f3f4f6;
    border-bottom: 1px solid #d1d5db;
}

.dropdown {
    display: flex;
    align-items: center;
    position: relative;
    margin-right: 8px;
}

.dropdown-button {
    background-color: transparent;
    border: none;
    font-size: 15.5px;
    color: #111827;
    cursor: pointer;
}

.dropdown-arrow {
    font-size: 10px;
    color: black;
    margin-left: 4px;
    user-select: none;
    margin-top: 10px;
}

.toolbar-button {
    background-color: transparent;
    border: none;
    font-size: 16px;
    color: #111827;
    cursor: pointer;
    padding: 5px;
    margin-right: 18px;
}

.toolbar-button.bold {
    font-weight: bold;
}

.toolbar-button.italic {
    font-style: italic;
}

.toolbar-button.underline {
    text-decoration: underline;
}

.container_re4 {
    width: 100%;
    margin: 20px auto;
    padding: 20px;
    background-color: #ffffff;
    border: 1px solid #e5e7eb;
    border-radius: 4px;
}

.row {
    display: flex;
    justify-content: space-between;
    margin-top: 10px;
}

.column {
    display: flex;
    flex-direction: column;
    width: 48%;
    margin-bottom: 10px;
}

.label {
    font-size: 14px;
    color: black;
    margin-bottom: 10px;
}

.dropdown_re4 {
    width: 100%;
    padding: 8px;
    font-size: 14px;
    color: #111827;
    border: 1px solid #d1d5db;
    border-radius: 4px;
    background-color: #f3f4f6;
}

.test-case-label {
    font-size: 14px;
    color: black;
    margin-bottom: 10px;
    display: flex;
    align-items: center;
}

.info-icon {
    font-size: 13px;
    color: gray;
    margin-left: 5px;
    cursor: pointer;
}

.test-case {
    display: flex;
    align-items: center;
    margin-bottom: 8px;
}

.test-case-input,
.output-input {
    width: 48%;
    padding: 8px;
    font-size: 14px;
    color: #111827;
    border: 1px solid #d1d5db;
    border-radius: 4px;
    background-color: #ffffff;
}

.arrow {
    font-size: 16px;
    color: #9ca3af;
    margin: 0 8px;
}

.update-button {
    display: block;
    width: 20%;
    padding: 10px;
    margin-top: 10px;
    font-size: 14px;
    color: #ffffff;
    background-color: #3b82f6;
    border-radius: 10px;
    cursor: pointer;
}

.update-button:hover {
    background-color: #2563eb;
}