:root {
    --bs-body-font-family: 'Inter', sans-serif;
    --bs-body-font-size: 1.1rem;
    --bs-body-line-height: 1.6;
    --bs-body-letter-spacing: 0.01em;
}

body {
    transition: background-color 0.3s ease, color 0.3s ease;
    min-height: 100vh;
    padding-bottom: 2rem;
}

.form-control, .btn {
    font-size: 1.1rem;
    border-radius: 0.5rem;
}

.form-control {
    padding: 0.75rem 1rem;
    line-height: 1.6;
}

textarea.form-control {
    min-height: 150px;
    resize: vertical;
}

.btn-primary {
    padding: 0.75rem 1.5rem;
    font-weight: 600;
    letter-spacing: 0.02em;
}

.result-area {
    background-color: rgba(0, 0, 0, 0.03);
    border-radius: 0.5rem;
    padding: 1.5rem;
    margin-top: 2rem;
    min-height: 100px;
    transition: background-color 0.3s ease;
}

[data-bs-theme="dark"] .result-area {
    background-color: rgba(255, 255, 255, 0.05);
}

.theme-toggle {
    cursor: pointer;
    padding: 0.5rem;
    font-size: 1.5rem;
    border-radius: 50%;
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background-color 0.3s ease;
}

.theme-toggle:hover {
    background-color: rgba(0, 0, 0, 0.1);
}

[data-bs-theme="dark"] .theme-toggle:hover {
    background-color: rgba(255, 255, 255, 0.1);
}

.bi-moon-fill {
    display: none;
}

[data-bs-theme="dark"] .bi-sun-fill {
    display: none;
}

[data-bs-theme="dark"] .bi-moon-fill {
    display: inline-block;
}

.loading-spinner {
    display: none;
}

.provider-select {
    margin-bottom: 1rem;
}

.provider-buttons {
    margin-bottom: 1rem;
}

.provider-btn {
    font-size: 1rem;
}

.provider-btn.active {
    background-color: #007bff;
    color: #ffffff;
}

.prompt-prefix-buttons {
    margin-bottom: 1rem;
}

.prompt-prefix-btn {
    font-size: 1rem;
    margin-bottom: 0.5rem;
}

.prompt-prefix-btn.active {
    background-color: #007bff;
    color: #ffffff;
}

.prefix-textarea {
    margin-bottom: 1rem;
}