/* =====================================================
   HYDRAULIC SIZING CALCULATOR PAGE
   ===================================================== */

.hydraulic-calculator-page .hero {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
}

/* Grid Layout — matches solar calculator */
.hydraulic-calculator-grid {
    display: grid;
    grid-template-columns: 420px 1fr;
    gap: 3rem;
    align-items: start;
}

/* Form Wrapper */
.hydraulic-calculator-form-wrapper {
    background: var(--color-bg-white);
    border-radius: var(--radius-md);
    padding: 2rem;
    box-shadow: 0 4px 24px rgba(0, 0, 0, 0.08);
    position: sticky;
    top: calc(var(--header-height) + 1.5rem);
}

.hydraulic-calculator-form .form-help {
    display: block;
    margin-top: 0.25rem;
    font-size: 0.8125rem;
    color: #475569;
}

/* Results Column */
.hydraulic-calculator-results {
    min-height: 400px;
}

/* =====================================================
   FIELDSETS — Engineering Section Groups
   ===================================================== */

.calc-fieldset {
    border: none;
    padding: 0;
    margin: 0 0 1.5rem;
}

.calc-fieldset__legend {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    padding-bottom: 0.75rem;
    margin-bottom: 0.75rem;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    gap: 0.5rem;
    width: 100%;
}

.calc-fieldset__legend--collapsible {
    cursor: pointer;
    user-select: none;
}

.calc-fieldset__legend--collapsible:hover {
    color: var(--color-primary);
}

.calc-fieldset__legend .toggle-icon {
    transition: transform 0.2s ease;
    margin-left: auto;
}

.calc-fieldset__legend--open .toggle-icon {
    transform: rotate(180deg);
}

/* Fittings Section */
.calc-fittings--collapsed {
    display: none;
}

/* =====================================================
   FITTINGS — Dynamic Row List
   ===================================================== */

.fittings-list {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.fitting-row {
    display: grid;
    grid-template-columns: 1fr 80px 32px;
    gap: 0.5rem;
    align-items: center;
}

.fitting-row select,
.fitting-row input {
    font-size: 0.875rem;
    padding: 0.5rem 0.625rem;
}

.fitting-qty-wrapper {
    position: relative;
}

.fitting-qty-wrapper .input-unit {
    right: 0.5rem;
    font-size: 0.75rem;
}

.fitting-qty-wrapper input {
    padding-right: 2rem;
    text-align: center;
}

.remove-fitting {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0.25rem;
    color: var(--color-text-muted);
    border: none;
    background: none;
    cursor: pointer;
    border-radius: var(--radius-sm);
    transition: color 0.15s ease, background-color 0.15s ease;
}

.remove-fitting:hover {
    color: #ef4444;
    background: rgba(239, 68, 68, 0.08);
}

/* =====================================================
   CALCULATION BREAKDOWN
   ===================================================== */

.calc-breakdown {
    background: var(--color-bg-body);
    border-radius: var(--radius-md);
    padding: 1.75rem;
    margin-bottom: 2rem;
    border: 1px solid var(--border-color);
}

.calc-breakdown__title {
    font-size: 0.8125rem;
    font-weight: 600;
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.06em;
    margin-bottom: 1.25rem;
}

.calc-breakdown__rows {
    display: flex;
    flex-direction: column;
    gap: 0.625rem;
}

.calc-breakdown__row {
    display: flex;
    align-items: baseline;
    gap: 0.5rem;
    padding: 0.375rem 0;
}

.calc-breakdown__row--total {
    margin-top: 0.5rem;
    padding-top: 0.875rem;
    border-top: 2px solid var(--color-primary);
}

.calc-breakdown__label {
    flex: 1;
    font-size: 0.9375rem;
    color: var(--color-text);
}

.calc-breakdown__row--total .calc-breakdown__label {
    font-weight: 700;
    color: var(--color-primary);
}

.calc-breakdown__value {
    font-family: var(--font-mono);
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--color-primary);
    min-width: 3rem;
    text-align: right;
}

.calc-breakdown__row--total .calc-breakdown__value {
    font-size: 1.5rem;
    color: var(--color-primary);
}

.calc-breakdown__unit {
    font-size: 0.8125rem;
    color: var(--color-text-muted);
    font-family: var(--font-mono);
    min-width: 2rem;
}

/* Velocity Display */
.calc-breakdown__velocity {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-top: 1.25rem;
    padding-top: 1rem;
    border-top: 1px solid var(--border-color);
}

.calc-breakdown__badge {
    display: inline-flex;
    align-items: center;
    padding: 0.125rem 0.5rem;
    font-size: 0.6875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    border-radius: 3px;
}

.calc-breakdown__badge--ok {
    background: rgba(22, 163, 74, 0.1);
    color: #15803d;
}

.calc-breakdown__badge--warning {
    background: rgba(245, 158, 11, 0.1);
    color: #b45309;
}

.calc-breakdown__badge--error {
    background: rgba(239, 68, 68, 0.1);
    color: #dc2626;
}

/* Formula Details */
.calc-formula-details {
    margin-top: 1.25rem;
    padding-top: 1rem;
    border-top: 1px solid var(--border-color);
}

.calc-formula-details summary {
    font-size: 0.8125rem;
    color: var(--color-text-muted);
    cursor: pointer;
    user-select: none;
}

.calc-formula-details summary:hover {
    color: var(--color-primary);
}

.calc-formula {
    margin-top: 0.75rem;
    padding: 1rem;
    background: rgba(15, 23, 42, 0.04);
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-color);
}

.calc-formula code {
    display: block;
    font-family: var(--font-mono);
    font-size: 0.875rem;
    color: var(--color-primary);
    margin-bottom: 0.5rem;
}

.calc-formula__values {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--color-text-muted);
    word-break: break-all;
}

/* =====================================================
   SHARED STYLES (duplicated from solar-calculator for
   standalone page loading — these are identical)
   ===================================================== */

/* Beta Notice */
.hydraulic-calculator-page .beta-notice {
    display: flex;
    align-items: center;
    gap: 0.875rem;
    padding: 1rem 1.25rem;
    margin-bottom: 1.5rem;
    background: rgba(15, 23, 42, 0.04);
    border-left: 2px solid var(--color-accent);
    border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
    font-size: 0.875rem;
    color: var(--color-text-muted);
}

.hydraulic-calculator-page .beta-notice__tag {
    display: inline-flex;
    align-items: center;
    padding: 0.25rem 0.6rem;
    background: var(--color-accent);
    color: white;
    font-family: var(--font-mono);
    font-size: 0.65rem;
    font-weight: 600;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    border-radius: 3px;
    white-space: nowrap;
}

/* Input with unit */
.hydraulic-calculator-form .input-with-unit {
    position: relative;
    display: flex;
    align-items: center;
}

.hydraulic-calculator-form .input-with-unit input {
    padding-right: 4.5rem;
}

.hydraulic-calculator-form .input-unit {
    position: absolute;
    right: 1rem;
    color: var(--color-text-muted);
    font-size: 0.875rem;
    font-family: var(--font-mono);
    pointer-events: none;
}

/* Range slider */
.hydraulic-calculator-form .form-range {
    width: 100%;
    height: 6px;
    background: var(--border-color);
    border-radius: 3px;
    outline: none;
    -webkit-appearance: none;
    cursor: pointer;
    transition: background-color 0.2s ease;
}

.hydraulic-calculator-form .form-range:hover {
    background: #cbd5e1;
}

.hydraulic-calculator-form .form-range::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 18px;
    height: 18px;
    background: var(--color-accent);
    border-radius: 50%;
    cursor: pointer;
    border: 2px solid var(--color-bg-white);
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.2);
    transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.hydraulic-calculator-form .form-range::-webkit-slider-thumb:hover {
    transform: scale(1.1);
}

.hydraulic-calculator-form .form-range::-moz-range-thumb {
    width: 18px;
    height: 18px;
    background: var(--color-accent);
    border-radius: 50%;
    cursor: pointer;
    border: 2px solid var(--color-bg-white);
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.2);
}

.hydraulic-calculator-form .form-range:focus-visible::-webkit-slider-thumb {
    box-shadow: 0 0 0 3px rgba(2, 132, 199, 0.3), 0 2px 6px rgba(0, 0, 0, 0.2);
}

.hydraulic-calculator-form .form-range:focus-visible::-moz-range-thumb {
    box-shadow: 0 0 0 3px rgba(2, 132, 199, 0.3), 0 2px 6px rgba(0, 0, 0, 0.2);
}

/* Initial State / No Results */
.hydraulic-calculator-results .initial-state,
.hydraulic-calculator-results .no-results {
    text-align: center;
    padding: 4rem 2rem;
    background: var(--color-bg-body);
    border-radius: var(--radius-md);
    border: 2px dashed var(--border-color);
}

.hydraulic-calculator-results .initial-state-icon,
.hydraulic-calculator-results .no-results-icon {
    color: #cbd5e1;
    margin-bottom: 1rem;
}

.hydraulic-calculator-results .initial-state-text,
.hydraulic-calculator-results .no-results-text {
    color: var(--color-text-muted);
    max-width: 400px;
    margin: 0 auto;
}

.hydraulic-calculator-results .no-results-hint {
    color: #94a3b8;
    font-size: 0.875rem;
    margin-top: 0.5rem;
}

/* Results Grid */
.hydraulic-calculator-results .results-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 1.5rem;
}

.hydraulic-calculator-results .results-title {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--color-primary);
    margin-bottom: 1.5rem;
}

/* Result Cards */
.hydraulic-calculator-results .pump-result-card {
    background: var(--color-bg-white);
    border-radius: var(--radius-md);
    padding: 1.5rem;
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.06);
    border: 1px solid var(--border-color);
    position: relative;
    transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}

.hydraulic-calculator-results .pump-result-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
    border-color: var(--color-accent);
}

.hydraulic-calculator-results .pump-result-card[data-score]:first-child {
    border-color: var(--color-accent);
    border-width: 2px;
}

/* Badge */
.hydraulic-calculator-results .result-card-badge {
    position: absolute;
    top: -0.5rem;
    right: 1rem;
    color: var(--color-bg-white);
    font-size: 0.6875rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    padding: 0.25rem 0.75rem;
    border-radius: 12px;
}

.hydraulic-calculator-results .badge--best {
    background: var(--color-success, #16a34a);
}

.hydraulic-calculator-results .badge--good {
    background: var(--color-accent);
}

/* Card Inner Layout */
.hydraulic-calculator-results .result-card-header {
    display: flex;
    gap: 1rem;
    margin-bottom: 1rem;
}

.hydraulic-calculator-results .result-card-image {
    width: 64px;
    height: 64px;
    border-radius: var(--radius-sm);
    overflow: hidden;
    flex-shrink: 0;
    background: var(--color-bg-body);
}

.hydraulic-calculator-results .result-card-image img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.hydraulic-calculator-results .result-card-product {
    font-size: 1rem;
    font-weight: 600;
    color: var(--color-primary);
    margin: 0;
}

.hydraulic-calculator-results .result-card-model {
    font-size: 0.8125rem;
    color: var(--color-text-muted);
    font-family: var(--font-mono);
    margin: 0.25rem 0 0;
}

/* Specs */
.hydraulic-calculator-results .result-card-specs {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0.5rem;
    padding: 0.75rem 0;
    border-top: 1px solid var(--border-color);
    border-bottom: 1px solid var(--border-color);
    margin-bottom: 1rem;
}

.hydraulic-calculator-results .spec-item {
    display: flex;
    flex-direction: column;
    gap: 0.125rem;
}

.hydraulic-calculator-results .spec-label {
    font-size: 0.6875rem;
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.hydraulic-calculator-results .spec-value {
    font-family: var(--font-mono);
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--color-primary);
}

/* Actions */
.hydraulic-calculator-results .result-card-actions {
    display: flex;
    gap: 0.5rem;
}

.hydraulic-calculator-results .result-card-actions .btn {
    flex: 1;
    text-align: center;
    font-size: 0.8125rem;
}

/* =====================================================
   RESPONSIVE
   ===================================================== */

@media (max-width: 992px) {
    .hydraulic-calculator-grid {
        grid-template-columns: 1fr;
    }

    .hydraulic-calculator-form-wrapper {
        position: static;
    }
}

@media (max-width: 768px) {
    .hydraulic-calculator-form-wrapper {
        padding: 1.25rem;
    }

    .calc-breakdown {
        padding: 1.25rem;
    }

    .calc-breakdown__row--total .calc-breakdown__value {
        font-size: 1.25rem;
    }

    .fitting-row {
        grid-template-columns: 1fr 70px 32px;
    }

    .hydraulic-calculator-results .results-grid {
        grid-template-columns: 1fr;
    }

    .hydraulic-calculator-results .result-card-actions {
        flex-direction: column;
    }
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
    .hydraulic-calculator-results .pump-result-card {
        transition: none;
    }

    .hydraulic-calculator-results .pump-result-card:hover {
        transform: none;
    }

    .calc-fieldset__legend .toggle-icon {
        transition: none;
    }
}