/* === Calculator Pages Shared Styles === */

/* Disable scroll/spinner on number inputs */
input[type="number"]::-webkit-inner-spin-button,
input[type="number"]::-webkit-outer-spin-button {
    -webkit-appearance: none;
    margin: 0;
}
input[type="number"] {
    -moz-appearance: textfield;
}

/* Calculator Section */
.calc-section {
    margin-bottom: 40px;
}

.calc-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 30px;
    margin-top: 24px;
}

.calc-inputs {
    background: #fff;
    border-radius: 12px;
    padding: 28px;
    border: 1px solid #e0e0e0;
}

.input-group {
    margin-bottom: 22px;
}

.input-group label {
    display: block;
    font-size: 13px;
    font-weight: 600;
    color: #444;
    margin-bottom: 8px;
    text-transform: uppercase;
    letter-spacing: 0.3px;
}

.input-group input[type="number"] {
    width: 100%;
    padding: 12px 16px;
    border: 2px solid #e0e0e0;
    border-radius: 8px;
    font-size: 16px;
    font-weight: 600;
    color: #1a1a2e;
    transition: border-color 0.2s;
    background: #fafafa;
}

.input-group input[type="number"]:focus {
    outline: none;
    border-color: #0288d1;
    background: #fff;
}

.input-group input[type="range"] {
    width: 100%;
    margin-top: 10px;
    -webkit-appearance: none;
    height: 6px;
    border-radius: 3px;
    background: linear-gradient(90deg, #0288d1 0%, #e0e0e0 100%);
    outline: none;
}

.input-group input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: #0288d1;
    cursor: pointer;
    box-shadow: 0 2px 6px rgba(2, 136, 209, 0.4);
}

.input-group select {
    width: 100%;
    padding: 12px 16px;
    border: 2px solid #e0e0e0;
    border-radius: 8px;
    font-size: 15px;
    font-weight: 600;
    color: #1a1a2e;
    background: #fafafa;
    cursor: pointer;
    transition: border-color 0.2s;
    -webkit-appearance: none;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%23666' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 16px center;
}

.input-group select:focus {
    outline: none;
    border-color: #0288d1;
    background-color: #fff;
}

.tenure-row {
    display: flex;
    gap: 10px;
    align-items: center;
}

.tenure-row input[type="number"] {
    flex: 1;
}

.tenure-toggle {
    display: flex;
    border: 2px solid #e0e0e0;
    border-radius: 8px;
    overflow: hidden;
}

.tenure-toggle button {
    padding: 10px 14px;
    font-size: 13px;
    border-radius: 0;
    box-shadow: none;
    background: #fff;
    color: #666;
    font-weight: 500;
    border: none;
}

.tenure-toggle button.active {
    background: #0288d1;
    color: white;
}

.tenure-toggle button:hover:not(.active) {
    background: #f0f7ff;
    transform: none;
    box-shadow: none;
}

.calc-btn {
    width: 100%;
    padding: 14px;
    font-size: 16px;
    margin-top: 8px;
    background: linear-gradient(135deg, #0288d1, #0277bd);
}

/* Results */
.calc-results {
    display: flex;
    flex-direction: column;
    gap: 14px;
}

.result-card {
    background: #fff;
    border: 1px solid #e0e0e0;
    border-radius: 12px;
    padding: 18px 22px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.result-card.primary {
    background: linear-gradient(135deg, #0288d1, #0277bd);
    border: none;
    padding: 22px 24px;
}

.result-card.primary .result-label {
    color: rgba(255,255,255,0.85);
}

.result-card.primary .result-value {
    color: #fff;
    font-size: 24px;
}

.result-label {
    font-size: 13px;
    color: #666;
    font-weight: 500;
}

.result-value {
    font-size: 18px;
    font-weight: 700;
    color: #1a1a2e;
}

.chart-container {
    background: #fff;
    border: 1px solid #e0e0e0;
    border-radius: 12px;
    padding: 20px;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.chart-legend {
    display: flex;
    gap: 20px;
    margin-top: 12px;
}

.legend-item {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 13px;
    color: #555;
}

.legend-item i {
    width: 12px;
    height: 12px;
    border-radius: 3px;
    display: inline-block;
}

/* Info Sections */
.info-section {
    margin-top: 50px;
    padding-top: 40px;
    border-top: 1px solid #e0e0e0;
}

.info-section h2 {
    font-size: 22px;
    color: #1a1a2e;
    margin-bottom: 16px;
}

.info-section p {
    color: #444;
    line-height: 1.8;
    font-size: 15px;
    margin-bottom: 12px;
}

.info-highlights {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 14px;
    margin-top: 20px;
}

.highlight-item {
    background: #f8f9fa;
    border: 1px solid #e8e8e8;
    border-radius: 10px;
    padding: 16px;
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.highlight-item strong {
    color: #0288d1;
    font-size: 14px;
}

.highlight-item span {
    color: #666;
    font-size: 13px;
    line-height: 1.5;
}

/* Formula Box */
.formula-box {
    background: linear-gradient(135deg, #1a1a2e, #16213e);
    border-radius: 12px;
    padding: 30px;
    margin: 20px 0;
    text-align: center;
}

.formula {
    color: #4fc3f7;
    font-size: 18px;
    font-weight: 600;
    font-family: 'Courier New', monospace;
    letter-spacing: 0.5px;
}

.formula-terms {
    margin-top: 16px;
}

.formula-terms ul {
    list-style: none;
    padding: 0;
    margin-top: 10px;
}

.formula-terms li {
    padding: 8px 0;
    color: #444;
    font-size: 14px;
    border-bottom: 1px solid #f0f0f0;
}

.formula-terms li:last-child {
    border-bottom: none;
}

.formula-note {
    background: #fff8e1;
    border: 1px solid #ffe082;
    border-radius: 8px;
    padding: 12px 16px;
    margin-top: 16px;
    font-size: 14px !important;
    color: #5d4037 !important;
}

/* Example Box */
.example-box {
    background: #fff;
    border: 1px solid #e0e0e0;
    border-radius: 12px;
    padding: 28px;
    margin-top: 16px;
}

.example-box h3 {
    font-size: 16px;
    color: #1a1a2e;
    margin-bottom: 12px;
    margin-top: 20px;
}

.example-box h3:first-child {
    margin-top: 0;
}

.example-box p {
    margin-bottom: 8px;
}

.example-steps {
    margin: 16px 0;
}

.step {
    display: flex;
    align-items: flex-start;
    gap: 14px;
    padding: 14px 0;
    border-bottom: 1px solid #f0f0f0;
}

.step:last-child {
    border-bottom: none;
}

.step-num {
    width: 28px;
    height: 28px;
    background: linear-gradient(135deg, #0288d1, #0277bd);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 13px;
    font-weight: 700;
    flex-shrink: 0;
}

.step div strong {
    display: block;
    color: #333;
    font-size: 14px;
    margin-bottom: 4px;
}

.step div p {
    font-family: 'Courier New', monospace;
    color: #555;
    font-size: 14px;
    margin: 0;
}

.example-summary {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
    gap: 12px;
    margin-top: 20px;
    padding-top: 20px;
    border-top: 1px solid #e8e8e8;
}

.summary-item {
    background: #f0f7ff;
    border-radius: 8px;
    padding: 14px;
    text-align: center;
}

.summary-item span {
    display: block;
    font-size: 12px;
    color: #666;
    margin-bottom: 4px;
}

.summary-item strong {
    color: #0288d1;
    font-size: 16px;
}

/* FAQ Section */
.faq-list {
    margin-top: 16px;
}

.faq-item {
    border: 1px solid #e0e0e0;
    border-radius: 10px;
    margin-bottom: 10px;
    overflow: hidden;
    transition: box-shadow 0.2s;
}

.faq-item:hover {
    box-shadow: 0 2px 8px rgba(0,0,0,0.05);
}

.faq-question {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 20px;
    cursor: pointer;
    background: #fff;
    font-size: 15px;
    font-weight: 500;
    color: #333;
    transition: background 0.2s;
}

.faq-question:hover {
    background: #f8f9fa;
}

.faq-icon {
    font-size: 20px;
    font-weight: 300;
    color: #0288d1;
    transition: transform 0.2s;
}

.faq-item.open .faq-icon {
    transform: rotate(45deg);
}

.faq-answer {
    display: none;
    padding: 0 20px 16px;
    background: #fff;
}

.faq-item.open .faq-answer {
    display: block;
}

.faq-answer p {
    font-size: 14px;
    color: #555;
    line-height: 1.7;
}

/* Related Tools / Internal Links */
.related-tools {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 14px;
    margin-top: 16px;
}

.related-tool-card {
    display: flex;
    align-items: center;
    gap: 14px;
    background: #fff;
    border: 1px solid #e0e0e0;
    border-radius: 10px;
    padding: 16px 20px;
    text-decoration: none;
    transition: all 0.2s;
}

.related-tool-card:hover {
    border-color: #0288d1;
    box-shadow: 0 4px 12px rgba(2, 136, 209, 0.1);
    transform: translateY(-2px);
}

.rt-icon {
    width: 40px;
    height: 40px;
    background: #f0f7ff;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 18px;
    flex-shrink: 0;
}

.related-tool-card div strong {
    display: block;
    color: #1a1a2e;
    font-size: 14px;
    margin-bottom: 2px;
}

.related-tool-card div span {
    color: #888;
    font-size: 12px;
}

/* === Responsive === */
@media(max-width: 900px) {
    .calc-grid {
        grid-template-columns: 1fr;
    }
}

@media(max-width: 600px) {
    .calc-inputs {
        padding: 20px;
    }

    .formula {
        font-size: 14px;
    }

    .example-summary {
        grid-template-columns: 1fr;
    }

    .info-highlights {
        grid-template-columns: 1fr;
    }

    .related-tools {
        grid-template-columns: 1fr;
    }
}