/* Pricing calculator widget */
.calc-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    align-items: start;
}

.calc-form {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 18px 20px;
}

.calc-field {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.calc-field label {
    font-size: 13px;
    font-weight: 600;
    color: var(--text-dim);
    letter-spacing: 0.01em;
}

.calc-field input[type="number"] {
    width: 100%;
    padding: 9px 12px;
    font-size: 15px;
    font-family: inherit;
    color: var(--text);
    background: var(--panel);
    border: 1px solid var(--border);
    border-radius: 8px;
    transition: border-color .15s ease, box-shadow .15s ease;
}

.calc-field input[type="number"]:focus {
    outline: none;
    border-color: var(--signal);
    box-shadow: 0 0 0 3px var(--signal-soft);
}

/* OS toggle */
.calc-toggle {
    display: flex;
    border: 1px solid var(--border);
    border-radius: 8px;
    overflow: hidden;
}

.calc-toggle-btn {
    flex: 1;
    padding: 9px 12px;
    font-size: 14px;
    font-family: inherit;
    font-weight: 500;
    color: var(--text-dim);
    background: var(--panel);
    border: none;
    cursor: pointer;
    transition: background .15s ease, color .15s ease;
}

.calc-toggle-btn + .calc-toggle-btn {
    border-left: 1px solid var(--border);
}

.calc-toggle-btn:hover {
    background: var(--panel-2);
}

.calc-toggle-btn.active {
    background: var(--signal);
    color: #fff;
}

/* Result panel */
.calc-result {
    display: flex;
    flex-direction: column;
    gap: 0;
    background: var(--panel-2);
    border: 1px solid var(--border);
    border-radius: 14px;
    padding: 20px 24px;
}

.calc-notice {
    padding: 9px 12px;
    margin-bottom: 14px;
    font-size: 13px;
    font-weight: 500;
    color: #0b4fbf;
    background: #e8f0ff;
    border: 1px solid #b9d0f7;
    border-radius: 8px;
}

.calc-row {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    padding: 10px 0;
    border-bottom: 1px solid var(--border-soft);
    font-size: 14px;
    color: var(--text-dim);
}

/* Help tooltip */
.calc-help {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 16px;
    height: 16px;
    margin-left: 6px;
    font-size: 11px;
    font-weight: 700;
    line-height: 1;
    color: var(--text-dim);
    background: var(--border-soft);
    border-radius: 50%;
    cursor: help;
    position: relative;
}

.calc-help-tip {
    display: none;
    position: absolute;
    bottom: calc(100% + 8px);
    right: -10px;
    width: 260px;
    padding: 10px 12px;
    font-size: 12.5px;
    font-weight: 400;
    line-height: 1.5;
    color: var(--text);
    background: var(--panel);
    border: 1px solid var(--border);
    border-radius: 8px;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
    white-space: normal;
    z-index: 10;
}

.calc-help-tip .uh-line {
    padding: 2px 0;
}

.calc-help-tip .uh-line + .uh-line {
    border-top: 1px solid var(--border-soft);
    margin-top: 6px;
    padding-top: 6px;
}

.calc-help-tip .uh-price {
    color: #0b4fbf;
    font-weight: 600;
}

.calc-help-tip::after {
    content: '';
    position: absolute;
    top: 100%;
    right: 16px;
    border: 5px solid transparent;
    border-top-color: var(--panel);
}

.calc-help:hover .calc-help-tip,
.calc-help:focus .calc-help-tip,
.calc-help:focus-within .calc-help-tip {
    display: block;
}

.calc-row .calc-val {
    font-family: var(--font-mono);
    font-size: 15px;
    font-weight: 600;
    color: var(--text);
}

.calc-total {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    padding: 20px 0 4px;
    margin-top: 4px;
}

.calc-total > span:first-child {
    font-size: 14px;
    font-weight: 600;
    color: var(--text);
}

.calc-amount {
    font-family: var(--font-mono);
    font-size: 30px;
    font-weight: 700;
    color: var(--signal);
    letter-spacing: -0.02em;
}

/* Responsive */
@media (max-width: 768px) {
    .calc-grid {
        grid-template-columns: 1fr;
        gap: 28px;
    }
    .calc-form {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 480px) {
    .calc-form {
        grid-template-columns: 1fr;
    }
}