body {
    font-family: Verdana;
    background: #f3f6fa;
    padding: 20px;
    margin: 0;
}

.container {
    max-width: 900px;
    margin: auto;
}

h1 {
    text-align: center;
    color: #000000;
}

.card {
    background: white;
    padding: 20px;
    border-radius: 10px;
    box-shadow: 0 4px 8px rgba(0,0,0,0.05);
    margin-bottom: 20px;
    font-family: Verdana;
}

label {
    font-weight: bold;
    margin-top: 10px;
    display: block;
}

input, textarea {
    width: 100%;
    padding: 10px;
    margin-top: 6px;
    border: 1px solid #ccc;
    border-radius: 6px;
    font-size: 15px;
    box-sizing: border-box;
    font-family: Verdana;
}

textarea {
    min-height: 80px;
    resize: vertical;
}

input::placeholder,
textarea::placeholder {
    color: #757575;
    opacity: 0.7;
}

input.filled,
textarea.filled {
    background-color: #e3f2fd !important;
    border: 1.5px solid #2196f3 !important;
    transition: 0.2s ease-in-out;
}

button.primary {
    width: 100%;
    background: #2d9bdf;
    color: white;
    padding: 13px;
    border: none;
    font-size: 18px;
    border-radius: 8px;
    cursor: pointer;
    font-weight: bold;
    font-family: Verdana;
}

button.primary:hover {
    background: #2e78b5;
}

button.secondary {
    background: #92950f;
    color: white;
    padding: 10px 20px;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    font-size: 16px;
    font-family: Verdana;
}

button.secondary:hover {
    background: #aeb011;
}

button {
    padding: 10px 13px;
    margin-bottom: 10px;
    cursor: pointer;
    border: 1px solid #ccc;
    border-radius: 6px;
    background: rgb(220, 218, 218);
    font-family: Verdana;
    font-size: 14px;
}

button:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.hidden {
    display: none;
}

.problem-display {
    background: #f8f9fa;
    padding: 15px;
    border-radius: 6px;
    font-size: 16px;
    line-height: 1.6;
    white-space: pre-wrap;
    word-wrap: break-word;
    margin: 10px 0;
    font-family: Verdana;
}

.feedback-section {
    margin-bottom: 20px;
}

.feedback-box {
    background: #f8f9fa;
    padding: 12px;
    border-radius: 6px;
    margin-top: 5px;
    margin-bottom: 15px;
    line-height: 1.6;
}

#systemPromptText {
    font-family: Verdana;
    font-size: 13px;
    min-height: 300px;
}

#loading {
    text-align: center;
    font-size: 18px;
    font-family: Verdana;
    color: #000000;
    padding: 20px;
}