.tool-container .title-box {
    text-align: center;
    margin-bottom: 1.5rem;
}

.tool-container .main-title {
    font-size: clamp(1.5rem, 5vw, 2.5rem);
    font-weight: bold;
    color: var(--color-text);
    margin-bottom: 0.5rem;
}

.tool-container .sub-title {
    color: var(--color-text-light);
    font-size: 1rem;
}

.tool-container .card {
    background: var(--bg-card);
    border-radius: 0.75rem;
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.05);
    padding: 1rem;
    margin-bottom: 1.5rem;
    width: 100%;
}

@media (min-width: 768px) {
    .tool-container .card {
        padding: 1.5rem;
    }
}

.tool-container .form-group {
    display: flex;
    flex-direction: column;
    margin-bottom: 1rem;
}

.tool-container textarea {
    width: 100%;
    border: 1px solid #d1d5db;
    border-radius: 0.375rem;
    padding: 0.75rem;
    font-size: 1rem;
    outline: none;
    resize: vertical;
}

.tool-container textarea:focus {
    box-shadow: 0 0 0 1px var(--color-primary);
}

.tool-container .result-row {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 0.75rem;
}

.tool-container .result-label {
    width: 4rem;
    font-size: 0.875rem;
    color: #4b5563;
}

@media (min-width: 768px) {
    .tool-container .result-label {
        width: 5rem;
    }
}

.tool-container .result-input-group {
    flex: 1;
    position: relative;
}

.tool-container .result-input {
    width: 100%;
    border: 1px solid #d1d5db;
    border-radius: 0.375rem;
    padding: 0.5rem 2.5rem 0.5rem 0.5rem;
    font-size: 0.875rem;
}

.tool-container .copy-btn {
    position: absolute;
    right: 0.5rem;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    color: #9ca3af;
    cursor: pointer;
}

.tool-container .copy-btn:hover {
    color: #374151;
}

.tool-container .copy-btn svg {
    width: 1rem;
    height: 1rem;
}

.tool-container .btn-group {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.75rem;
    width: 100%;
}

.tool-container .btn {
    padding: 0.5rem 1rem;
    border-radius: 0.375rem;
    border: none;
    cursor: pointer;
    font-size: 1rem;
}

.tool-container .btn-primary {
    background-color: var(--color-primary);
    color: #fff;
}

.tool-container .btn-primary:hover {
    background-color: var(--color-primary-hover);
}

.tool-container .btn-default {
    background-color: var(--bg-button);
    color: var(--text-button);
}

.tool-container .btn-default:hover {
    background-color: var(--bg-button-hover);
}

.tool-container .tip-box {
    background: var(--tip-bg);
    border: 1px solid var(--tip-border-color);
    border-radius: 0.75rem;
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.05);
    padding: 1rem;
    margin-bottom: 1.5rem;
    width: 100%;
}

@media (min-width: 768px) {
    .tool-container .tip-box {
        padding: 1.5rem;
    }
}

.tool-container .tip-title {
    font-weight: 600;
    font-size: 1.125rem;
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
}

@media (min-width: 768px) {
    .tool-container .tip-title {
        font-size: 1.25rem;
    }
}

.tool-container .tip-text {
    font-size: 0.875rem;
    margin-bottom: 0.5rem;
    line-height: 1.6;
}

@media (min-width: 768px) {
    .tool-container .tip-text {
        font-size: 1rem;
    }
}