/* ============================================================
   Harishya Infratech LLP - Industrial Project Estimator
   File: css/calculator.css
   ============================================================ */

.estimator-section {
    position: relative;
    padding: 90px 0;
    background: radial-gradient(circle at 50% 0%, rgba(56, 189, 248, 0.08) 0%, transparent 70%);
}

.estimator-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 20px;
    padding: 36px 40px;
    box-shadow: 0 20px 45px rgba(0, 0, 0, 0.25), 0 0 30px rgba(56, 189, 248, 0.08);
    position: relative;
    overflow: hidden;
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
}

.estimator-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--primary), #ff7a00, var(--primary));
    background-size: 200% 100%;
    animation: gradientMove 6s linear infinite;
}

@keyframes gradientMove {
    0% { background-position: 0% 50%; }
    100% { background-position: 200% 50%; }
}

.estimator-tabs {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
    margin: 28px 0 32px;
    border-bottom: 1px solid var(--border);
    padding-bottom: 16px;
}

.estimator-tab-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 20px;
    border-radius: 30px;
    background: var(--surface2);
    border: 1px solid var(--border);
    color: var(--muted);
    font-size: 0.95rem;
    font-weight: 600;
    font-family: inherit;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.estimator-tab-btn:hover {
    color: var(--text);
    border-color: rgba(56, 189, 248, 0.4);
    transform: translateY(-2px);
}

.estimator-tab-btn.active {
    background: linear-gradient(135deg, rgba(56, 189, 248, 0.2) 0%, rgba(2, 132, 199, 0.25) 100%);
    border-color: var(--primary);
    color: var(--primary);
    box-shadow: 0 0 16px rgba(56, 189, 248, 0.25);
}

.estimator-grid {
    display: grid;
    grid-template-columns: 1.15fr 0.85fr;
    gap: 36px;
    align-items: start;
}

@media (max-width: 900px) {
    .estimator-grid {
        grid-template-columns: 1fr;
    }
    .estimator-card {
        padding: 24px;
    }
}

.estimator-controls {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.estimator-group label {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-weight: 600;
    font-size: 0.95rem;
    color: var(--text);
    margin-bottom: 10px;
}

.estimator-value-badge {
    background: var(--surface2);
    border: 1px solid var(--border);
    padding: 4px 14px;
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 700;
    color: var(--primary);
    font-family: 'Space Grotesk', sans-serif;
    letter-spacing: 0.5px;
}

.estimator-range {
    width: 100%;
    height: 8px;
    border-radius: 4px;
    background: var(--surface2);
    outline: none;
    cursor: pointer;
    accent-color: var(--primary);
    transition: all 0.2s ease;
}

.estimator-range:hover {
    filter: brightness(1.1);
}

.range-scale-labels {
    display: flex;
    justify-content: space-between;
    font-size: 0.78rem;
    color: var(--muted);
    margin-top: 6px;
}

.estimator-options-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(130px, 1fr));
    gap: 10px;
    margin-top: 8px;
}

.estimator-option-btn {
    padding: 10px 14px;
    background: var(--surface2);
    border: 1px solid var(--border);
    border-radius: 10px;
    color: var(--muted);
    font-size: 0.85rem;
    font-weight: 500;
    cursor: pointer;
    text-align: center;
    transition: all 0.2s ease;
}

.estimator-option-btn:hover {
    border-color: rgba(56, 189, 248, 0.4);
    color: var(--text);
}

.estimator-option-btn.active {
    background: rgba(56, 189, 248, 0.15);
    border-color: var(--primary);
    color: var(--primary);
    font-weight: 600;
}

/* Result Box */
.estimator-result-box {
    background: linear-gradient(145deg, var(--surface2) 0%, rgba(15, 23, 42, 0.6) 100%);
    border: 1px solid rgba(56, 189, 248, 0.25);
    border-radius: 16px;
    padding: 28px 24px;
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.08);
}

.result-box-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 20px;
    border-bottom: 1px solid var(--border);
    padding-bottom: 14px;
}

.result-box-title {
    font-family: 'Space Grotesk', sans-serif;
    font-size: 1.15rem;
    color: var(--text);
    margin: 0;
    display: flex;
    align-items: center;
    gap: 8px;
}

.result-badge-live {
    font-size: 0.72rem;
    text-transform: uppercase;
    background: rgba(16, 185, 129, 0.18);
    color: #10b981;
    border: 1px solid rgba(16, 185, 129, 0.3);
    padding: 3px 8px;
    border-radius: 12px;
    font-weight: 700;
    letter-spacing: 0.5px;
}

.result-metrics-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    margin-bottom: 24px;
}

.result-metric {
    background: rgba(0, 0, 0, 0.2);
    border: 1px solid var(--border);
    border-radius: 10px;
    padding: 12px 14px;
}

.result-metric-label {
    font-size: 0.78rem;
    color: var(--muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 4px;
}

.result-metric-val {
    font-family: 'Space Grotesk', sans-serif;
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text);
}

.result-metric-val span {
    font-size: 0.82rem;
    font-weight: 500;
    color: var(--muted);
    margin-left: 3px;
}

.result-estimate-price {
    background: linear-gradient(135deg, rgba(56, 189, 248, 0.12) 0%, rgba(245, 158, 11, 0.12) 100%);
    border: 1px solid rgba(56, 189, 248, 0.3);
    border-radius: 12px;
    padding: 16px;
    margin-bottom: 20px;
    text-align: center;
}

.result-price-label {
    font-size: 0.8rem;
    color: var(--muted);
    margin-bottom: 4px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.result-price-range {
    font-family: 'Space Grotesk', sans-serif;
    font-size: 1.55rem;
    font-weight: 800;
    color: var(--primary);
}

.result-price-disclaimer {
    font-size: 0.72rem;
    color: var(--muted);
    margin-top: 4px;
}

.estimator-btn-row {
    display: grid;
    grid-template-columns: 1.15fr 0.85fr;
    gap: 12px;
}

@media (max-width: 640px) {
    .estimator-btn-row {
        grid-template-columns: 1fr;
    }
}

.result-cta-btn {
    width: 100%;
    justify-content: center;
    padding: 13px 18px;
    font-size: 0.95rem;
}

.result-wa-btn {
    width: 100%;
    justify-content: center;
    padding: 13px 18px;
    font-size: 0.92rem;
    font-weight: 700;
    background: linear-gradient(135deg, #25d366 0%, #128c7e 100%) !important;
    border: 1px solid rgba(255, 255, 255, 0.25) !important;
    color: #ffffff !important;
    border-radius: 30px;
    box-shadow: 0 6px 18px rgba(37, 211, 102, 0.35);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.result-wa-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 24px rgba(37, 211, 102, 0.5);
}