html, body {
    font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif;
}

h1:focus {
    outline: none;
}

a, .btn-link {
    color: #0071c1;
}

.btn-primary {
    color: #fff;
    background-color: #1b6ec2;
    border-color: #1861ac;
}

.content {
    padding-top: 1.1rem;
}

.valid.modified:not([type=checkbox]) {
    outline: 1px solid #26b050;
}

.invalid {
    outline: 1px solid red;
}

.validation-message {
    color: red;
}

#blazor-error-ui {
    background: lightyellow;
    bottom: 0;
    box-shadow: 0 -1px 2px rgba(0, 0, 0, 0.2);
    display: none;
    left: 0;
    padding: 0.6rem 1.25rem 0.7rem 1.25rem;
    position: fixed;
    width: 100%;
    z-index: 1000;
}

#blazor-error-ui .dismiss {
    cursor: pointer;
    position: absolute;
    right: 0.75rem;
    top: 0.5rem;
}

.blazor-error-boundary {
    background: url(data:image/svg+xml;base64,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) no-repeat 1rem/1.8rem, #b32121;
    padding: 1rem 1rem 1rem 3.7rem;
    color: white;
}

.blazor-error-boundary::after {
    content: "An error has occurred."
}

.card {
    box-shadow: 0 0.125rem 0.25rem rgba(0, 0, 0, 0.075);
    border: 1px solid rgba(0, 0, 0, 0.125);
    border-radius: 0.25rem;
    margin-bottom: 1rem;
}

.card-body {
    padding: 1.5rem;
}

.card-title {
    margin-bottom: 1rem;
    font-size: 1.25rem;
    font-weight: 500;
}

.table {
    width: 100%;
    margin-bottom: 1rem;
    color: #212529;
}

.table-striped tbody tr:nth-of-type(odd) {
    background-color: rgba(0, 0, 0, 0.05);
}

.letter-grid {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: 0.5rem;
    margin-top: 1rem;
}

.letter-button {
    aspect-ratio: 1;
    font-size: 1.5rem;
    font-weight: bold;
    border: 2px solid #dee2e6;
    border-radius: 0.5rem;
    background-color: #f8f9fa;
    color: #212529;
    cursor: pointer;
    transition: all 0.2s;
    min-width: 50px;
    min-height: 50px;
}

.letter-button:hover:not(:disabled) {
    background-color: #e9ecef;
    border-color: #adb5bd;
    transform: scale(1.05);
}

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

.letter-button.letter-correct {
    background-color: #d1e7dd;
    border-color: #badbcc;
    color: #0f5132;
}

.letter-button.letter-incorrect {
    background-color: #f8d7da;
    border-color: #f5c2c7;
    color: #842029;
}

@media (max-width: 768px) {
    .letter-grid {
        grid-template-columns: repeat(6, 1fr);
        gap: 0.4rem;
    }
    
    .letter-button {
        font-size: 1.2rem;
        min-width: 40px;
        min-height: 40px;
    }
}