/* Unit Converter - Tool Styles */

/* Tool Options */
.tool-options {
    padding: 1.25rem;
    margin-bottom: 1.5rem;
    background: var(--surface-color);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
}

.tool-options .section-title {
    margin-bottom: 0.75rem;
    font-size: 1rem;
}

/* Error Message */
.error-msg {
    background: #fee;
    border: 1px solid #fcc;
    border-radius: var(--radius-md);
    color: #c33;
    padding: 1rem;
    margin-bottom: 1.5rem;
    font-size: 0.9rem;
    display: none;
}

.error-msg.show {
    display: block;
}

/* Converter Grid */
.converter-grid {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    margin-bottom: 2rem;
    background: var(--surface-color);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 1.5rem;
}

/* Units Row (Top) */
.units-row-top {
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    gap: 1rem;
    align-items: flex-end;
}

/* Input and Output Row (Bottom) */
.input-output-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

.converter-input,
.converter-output {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.input-group,
.output-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.input-group label,
.output-group label {
    font-weight: 600;
    font-size: 0.95rem;
    color: var(--text-color);
}

.input-group input,
.output-group input {
    padding: 0.8rem;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    font-size: 1rem;
    background: var(--surface-color);
    color: var(--text-color);
    font-weight: 500;
}

.output-group input {
    background: var(--surface-color);
}

.unit-select-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.unit-select-group label {
    font-weight: 600;
    font-size: 0.95rem;
    color: var(--text-color);
}

.unit-select-group select {
    padding: 0.8rem;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    font-size: 0.95rem;
    background: var(--surface-color);
    cursor: pointer;
}

.swap-button {
    padding: 0.8rem 1rem;
    background: var(--primary-color);
    color: white;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    font-size: 1.2rem;
    font-weight: bold;
    transition: all 0.2s ease;
    min-width: 60px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.swap-button:hover {
    background: var(--primary-dark);
}

/* Option Group */
.option-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.option-group label {
    font-weight: 600;
    font-size: 0.95rem;
    color: var(--text-color);
}

.option-group select {
    padding: 0.6rem;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    font-size: 0.95rem;
    background: var(--surface-color);
    cursor: pointer;
}

/* Unit Table */
.unit-table {
    width: 100%;
    border-collapse: collapse;
    margin-bottom: 1.5rem;
}

.unit-table thead {
    background: var(--primary-color);
    color: white;
}

.unit-table th,
.unit-table td {
    padding: 0.75rem 1rem;
    text-align: left;
    border: 1px solid var(--border-color);
}

.unit-table tbody tr:nth-child(even) {
    background: var(--surface-color);
}

.unit-table tbody tr:hover {
    background: var(--border-color);
}

/* Sidebar */
.tool-sidebar {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.related-tools,
.tool-tips {
    background: var(--surface-color);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 1.5rem;
    margin-bottom: 1.5rem;
}

.related-tools h4,
.tool-tips h4 {
    margin-top: 0;
    margin-bottom: 1rem;
    color: var(--primary-color);
    font-size: 1rem;
}

.related-tools ul,
.tool-tips ul {
    list-style: none;
    margin: 0;
    padding: 0;
}

.related-tools li,
.tool-tips li {
    margin-bottom: 0.75rem;
    padding-left: 1.5rem;
    position: relative;
    font-size: 0.95rem;
}

.related-tools li::before {
    content: '→';
    position: absolute;
    left: 0;
    color: var(--primary-color);
    font-weight: bold;
}

.tool-tips li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--primary-color);
    font-weight: bold;
}

.related-tools a {
    color: var(--text-color);
    text-decoration: none;
    transition: color 0.2s;
}

.related-tools a:hover {
    color: var(--primary-color);
    text-decoration: underline;
}

.related-tools li:last-child,
.tool-tips li:last-child {
    margin-bottom: 0;
}

/* Responsive Design */
@media (max-width: 768px) {
    .converter-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
    }

    .swap-button {
        transform: rotate(90deg);
    }

    .use-case-grid {
        grid-template-columns: 1fr;
    }

    .unit-table {
        font-size: 0.9rem;
    }

    .unit-table th,
    .unit-table td {
        padding: 0.5rem 0.75rem;
    }
}

@media (max-width: 480px) {
    .converter-grid {
        gap: 0.75rem;
    }

    .unit-table {
        font-size: 0.8rem;
    }

    .unit-table th,
    .unit-table td {
        padding: 0.4rem 0.5rem;
    }
}