/**
 * Heat Load Calculator — Lemmony Agency Theme Styles
 *
 * Design tokens from Lemmony Agency theme.json:
 *   Primary:      #1AAD64
 *   Secondary:    #256EFF
 *   Body:         #2C2C2C
 *   Body Alt:     #FCFCFC
 *   Paragraph:    #1C1C1C
 *   Paragraph Alt:#757575
 *   Meta:         #5C5C5C
 *   Border:       #7C7C7C
 *   Border Alt:   #E0E0E0
 *   Midground:    #F7F7F7
 *   Midground Alt:#ececec
 *   Background:   #FFFFFF
 *   Background Alt:#111111
 *   Font:         "Plus Jakarta Sans", sans-serif
 *   Base size:    1.25rem (20px)
 *   Line height:  1.6
 *   Buttons:      pill shape (9999px radius), bold, 18px
 */

/* ======================== RESET & BASE ======================== */
.hlc-calculator {
    --hlc-primary: #1AAD64;
    --hlc-primary-hover: #15904f;
    --hlc-primary-light: #F2FBF7;
    --hlc-secondary: #256EFF;
    --hlc-secondary-light: #EBF2FF;
    --hlc-lemmonary: #FFE156;
    --hlc-body: #2C2C2C;
    --hlc-body-alt: #FCFCFC;
    --hlc-paragraph: #1C1C1C;
    --hlc-paragraph-alt: #757575;
    --hlc-meta: #5C5C5C;
    --hlc-border: #E0E0E0;
    --hlc-border-strong: #7C7C7C;
    --hlc-midground: #F7F7F7;
    --hlc-midground-alt: #ececec;
    --hlc-bg: #FFFFFF;
    --hlc-bg-alt: #111111;
    --hlc-font: "Plus Jakarta Sans", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    --hlc-radius: 12px;
    --hlc-radius-sm: 8px;
    --hlc-transition: 0.2s ease;
    --hlc-shadow: 0 1px 3px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);
    --hlc-shadow-md: 0 4px 12px rgba(0,0,0,0.08);
    --hlc-orange: #F57C00;
    --hlc-orange-light: #FFF3E0;

    font-family: var(--hlc-font);
    font-size: 1rem;
    line-height: 1.6;
    color: var(--hlc-paragraph);
    max-width: 960px;
    margin: 0 auto;
    padding: 2rem 0;
}

.hlc-calculator *,
.hlc-calculator *::before,
.hlc-calculator *::after {
    box-sizing: border-box;
}

/* ======================== PROGRESS BAR ======================== */
.hlc-progress {
    margin-bottom: 2.5rem;
}

.hlc-progress-bar {
    height: 4px;
    background: var(--hlc-midground-alt);
    border-radius: 4px;
    overflow: hidden;
    margin-bottom: 1.25rem;
}

.hlc-progress-fill {
    height: 100%;
    width: 16.66%;
    background: var(--hlc-primary);
    border-radius: 4px;
    transition: width 0.4s ease;
}

.hlc-steps-indicator {
    display: flex;
    justify-content: space-between;
    gap: 0.25rem;
}

.hlc-step-dot {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.35rem;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0;
    font-family: var(--hlc-font);
    transition: var(--hlc-transition);
}

.hlc-step-dot span {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: var(--hlc-midground);
    color: var(--hlc-paragraph-alt);
    font-weight: 700;
    font-size: 0.875rem;
    border: 2px solid transparent;
    transition: var(--hlc-transition);
}

.hlc-step-dot small {
    font-size: 0.75rem;
    color: var(--hlc-paragraph-alt);
    font-weight: 500;
    transition: var(--hlc-transition);
}

.hlc-step-dot.active span {
    background: var(--hlc-primary);
    color: #fff;
    border-color: var(--hlc-primary);
}

.hlc-step-dot.active small {
    color: var(--hlc-primary);
    font-weight: 700;
}

.hlc-step-dot.completed span {
    background: var(--hlc-primary-light);
    color: var(--hlc-primary);
    border-color: var(--hlc-primary);
}

.hlc-step-dot.completed small {
    color: var(--hlc-primary);
}

/* ======================== STEPS ======================== */
.hlc-step {
    display: none;
    animation: hlcFadeIn 0.35s ease;
}

.hlc-step.active {
    display: block;
}

@keyframes hlcFadeIn {
    from { opacity: 0; transform: translateY(12px); }
    to   { opacity: 1; transform: translateY(0); }
}

.hlc-step-header {
    margin-bottom: 2rem;
}

.hlc-step-header h2 {
    font-family: var(--hlc-font);
    font-size: clamp(1.5rem, 2vw, 2.25rem);
    font-weight: 700;
    line-height: 1.3;
    color: var(--hlc-body);
    margin: 0 0 0.5rem 0;
}

.hlc-step-header p {
    font-size: 1rem;
    color: var(--hlc-paragraph-alt);
    margin: 0;
}

/* ======================== FORM GRID ======================== */
.hlc-form-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.25rem;
}

.hlc-form-grid-tight {
    gap: 1rem;
    grid-template-columns: repeat(4, 1fr);
}

@media (max-width: 768px) {
    .hlc-form-grid,
    .hlc-form-grid-tight {
        grid-template-columns: 1fr;
    }
}

.hlc-field {
    display: flex;
    flex-direction: column;
    gap: 0.375rem;
}

.hlc-field-wide {
    grid-column: 1 / -1;
}

.hlc-field label {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--hlc-body);
}

.hlc-field input,
.hlc-field select {
    font-family: var(--hlc-font);
    font-size: 0.9375rem;
    line-height: 1.5;
    padding: 0.75rem 1rem;
    border: 1px solid var(--hlc-border);
    border-radius: var(--hlc-radius-sm);
    background: var(--hlc-bg);
    color: var(--hlc-paragraph);
    transition: border-color var(--hlc-transition), box-shadow var(--hlc-transition);
    width: 100%;
}

.hlc-field input:focus,
.hlc-field select:focus {
    outline: none;
    border-color: var(--hlc-primary);
    box-shadow: 0 0 0 3px rgba(26, 173, 100, 0.12);
}

.hlc-field input::placeholder {
    color: var(--hlc-paragraph-alt);
    opacity: 0.7;
}

.hlc-hint {
    font-size: 0.8125rem;
    color: var(--hlc-paragraph-alt);
    line-height: 1.4;
}

/* ======================== BUTTONS ======================== */
.hlc-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-family: var(--hlc-font);
    font-size: 1rem;
    font-weight: 700;
    line-height: 1;
    padding: 1rem 2rem;
    border-radius: 9999px;
    border: 2px solid transparent;
    cursor: pointer;
    transition: all var(--hlc-transition);
    text-decoration: none;
    white-space: nowrap;
}

.hlc-btn svg {
    flex-shrink: 0;
}

.hlc-btn-primary {
    background: var(--hlc-bg-alt);
    color: var(--hlc-body-alt);
    border-color: var(--hlc-bg-alt);
}

.hlc-btn-primary:hover {
    background: var(--hlc-primary);
    border-color: var(--hlc-primary);
    color: #fff;
}

.hlc-btn-outline {
    background: transparent;
    color: var(--hlc-body);
    border-color: var(--hlc-border);
}

.hlc-btn-outline:hover {
    border-color: var(--hlc-primary);
    color: var(--hlc-primary);
}

.hlc-btn-ghost {
    background: transparent;
    color: var(--hlc-paragraph-alt);
    border-color: transparent;
    padding-left: 1rem;
    padding-right: 1rem;
}

.hlc-btn-ghost:hover {
    color: var(--hlc-primary);
}

.hlc-btn-sm {
    font-size: 0.875rem;
    padding: 0.625rem 1.25rem;
}

.hlc-btn-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    border: none;
    background: var(--hlc-midground);
    color: var(--hlc-paragraph-alt);
    cursor: pointer;
    transition: var(--hlc-transition);
    padding: 0;
}

.hlc-btn-icon:hover {
    background: #fdecea;
    color: #c62828;
}

/* ======================== NAVIGATION ======================== */
.hlc-nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 2.5rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--hlc-border);
}

/* ======================== CARDS ======================== */
.hlc-chamber-card,
.hlc-panel-card {
    background: var(--hlc-bg);
    border: 1px solid var(--hlc-border);
    border-radius: var(--hlc-radius);
    margin-bottom: 1.5rem;
    overflow: hidden;
    box-shadow: var(--hlc-shadow);
    transition: box-shadow var(--hlc-transition);
}

.hlc-chamber-card:hover,
.hlc-panel-card:hover {
    box-shadow: var(--hlc-shadow-md);
}

.hlc-chamber-header,
.hlc-panel-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1.25rem 1.5rem;
    background: var(--hlc-midground);
    border-bottom: 1px solid var(--hlc-border);
}

.hlc-chamber-title-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
}

.hlc-chamber-name,
.hlc-panel-header h3 {
    font-family: var(--hlc-font);
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--hlc-body);
    margin: 0;
}

.hlc-chamber-body,
.hlc-panel-body {
    padding: 1.5rem;
}

/* ======================== BADGES ======================== */
.hlc-badge {
    display: inline-flex;
    align-items: center;
    padding: 0.25rem 0.75rem;
    border-radius: 9999px;
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.02em;
    text-transform: uppercase;
    background: var(--hlc-primary-light);
    color: var(--hlc-primary);
}

.hlc-badge-blue {
    background: var(--hlc-secondary-light);
    color: var(--hlc-secondary);
}

.hlc-badge-orange {
    background: var(--hlc-orange-light);
    color: var(--hlc-orange);
}

/* ======================== SUBSECTIONS ======================== */
.hlc-subsection {
    margin-top: 1.75rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--hlc-border);
}

.hlc-subsection:first-child {
    margin-top: 0;
    padding-top: 0;
    border-top: none;
}

.hlc-subsection h4 {
    font-family: var(--hlc-font);
    font-size: 1rem;
    font-weight: 700;
    color: var(--hlc-body);
    margin: 0 0 0.375rem 0;
}

.hlc-subsection > .hlc-hint {
    display: block;
    margin-bottom: 1.25rem;
}

/* ======================== SURFACE ROWS ======================== */
.hlc-surface-row {
    padding: 1.25rem 0;
    border-bottom: 1px solid var(--hlc-border);
}

.hlc-surface-row:last-child {
    border-bottom: none;
    padding-bottom: 0;
}

.hlc-surface-row:first-child {
    padding-top: 0;
}

.hlc-surface-label {
    font-size: 0.9375rem;
    font-weight: 700;
    color: var(--hlc-body);
    margin-bottom: 0.75rem;
}

.hlc-computed {
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.hlc-uvalue-display {
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--hlc-primary);
    padding: 0.75rem 1rem;
    background: var(--hlc-primary-light);
    border-radius: var(--hlc-radius-sm);
    text-align: center;
}

/* ======================== PRODUCT ROWS ======================== */
.hlc-product-row {
    padding: 1.25rem;
    background: var(--hlc-midground);
    border-radius: var(--hlc-radius-sm);
    margin-bottom: 1rem;
}

.hlc-product-row-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 1rem;
}

.hlc-product-label {
    font-size: 0.875rem;
    font-weight: 700;
    color: var(--hlc-body);
    text-transform: uppercase;
    letter-spacing: 0.03em;
}

/* ======================== RESULTS ======================== */
.hlc-report-header {
    text-align: center;
    padding: 2rem;
    background: var(--hlc-bg-alt);
    color: var(--hlc-body-alt);
    border-radius: var(--hlc-radius);
    margin-bottom: 2rem;
}

.hlc-report-header h2 {
    font-size: clamp(1.5rem, 2vw, 2rem);
    font-weight: 800;
    margin: 0 0 0.5rem 0;
    color: #fff;
}

.hlc-report-header p {
    color: rgba(255,255,255,0.7);
    margin: 0.25rem 0;
    font-size: 0.9375rem;
}

.hlc-report-summary {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.25rem;
    margin-bottom: 2rem;
}

@media (max-width: 640px) {
    .hlc-report-summary {
        grid-template-columns: 1fr;
    }
}

.hlc-summary-card {
    text-align: center;
    padding: 1.5rem;
    border-radius: var(--hlc-radius);
    background: var(--hlc-primary-light);
    border: 1px solid rgba(26, 173, 100, 0.15);
}

.hlc-summary-card .hlc-summary-value {
    font-size: clamp(1.75rem, 3vw, 2.5rem);
    font-weight: 800;
    color: var(--hlc-primary);
    line-height: 1.2;
}

.hlc-summary-card .hlc-summary-unit {
    font-size: 0.875rem;
    color: var(--hlc-paragraph-alt);
    font-weight: 600;
    margin-top: 0.25rem;
}

.hlc-summary-card .hlc-summary-label {
    font-size: 0.8125rem;
    color: var(--hlc-meta);
    margin-top: 0.375rem;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    font-weight: 700;
}

/* Chamber result card */
.hlc-chamber-result {
    background: var(--hlc-bg);
    border: 1px solid var(--hlc-border);
    border-radius: var(--hlc-radius);
    margin-bottom: 1.5rem;
    overflow: hidden;
    box-shadow: var(--hlc-shadow);
}

.hlc-chamber-result-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1.25rem 1.5rem;
    background: var(--hlc-midground);
    border-bottom: 1px solid var(--hlc-border);
    cursor: pointer;
    transition: var(--hlc-transition);
}

.hlc-chamber-result-header:hover {
    background: var(--hlc-midground-alt);
}

.hlc-chamber-result-header h3 {
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--hlc-body);
    margin: 0;
}

.hlc-chamber-result-total {
    font-weight: 700;
    color: var(--hlc-primary);
    font-size: 1rem;
}

.hlc-chamber-result-body {
    padding: 1.5rem;
}

/* Result tables */
.hlc-result-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.9375rem;
    margin-bottom: 1.5rem;
}

.hlc-result-table caption {
    text-align: left;
    font-size: 1rem;
    font-weight: 700;
    color: var(--hlc-body);
    padding-bottom: 0.75rem;
}

.hlc-result-table th {
    text-align: left;
    font-size: 0.8125rem;
    font-weight: 700;
    color: var(--hlc-meta);
    text-transform: uppercase;
    letter-spacing: 0.04em;
    padding: 0.625rem 0.75rem;
    border-bottom: 2px solid var(--hlc-border);
}

.hlc-result-table td {
    padding: 0.625rem 0.75rem;
    border-bottom: 1px solid var(--hlc-border);
    color: var(--hlc-paragraph);
}

.hlc-result-table tr:last-child td {
    border-bottom: none;
}

.hlc-result-table .hlc-row-total td {
    font-weight: 700;
    color: var(--hlc-body);
    border-top: 2px solid var(--hlc-border);
    border-bottom: none;
    background: var(--hlc-midground);
}

.hlc-result-table td:last-child,
.hlc-result-table th:last-child {
    text-align: right;
}

/* Load bar chart */
.hlc-load-bar-container {
    margin-bottom: 1.5rem;
}

.hlc-load-bar-row {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 0.625rem;
}

.hlc-load-bar-label {
    flex: 0 0 140px;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--hlc-body);
    text-align: right;
}

.hlc-load-bar-track {
    flex: 1;
    height: 28px;
    background: var(--hlc-midground);
    border-radius: 9999px;
    overflow: hidden;
}

.hlc-load-bar-fill {
    height: 100%;
    border-radius: 9999px;
    transition: width 0.6s ease;
    min-width: 2px;
}

.hlc-load-bar-fill.hlc-bar-transmission { background: var(--hlc-primary); }
.hlc-load-bar-fill.hlc-bar-product      { background: var(--hlc-secondary); }
.hlc-load-bar-fill.hlc-bar-infiltration  { background: var(--hlc-orange); }
.hlc-load-bar-fill.hlc-bar-internal      { background: var(--hlc-lemmonary); }

.hlc-load-bar-value {
    flex: 0 0 100px;
    font-size: 0.875rem;
    font-weight: 700;
    color: var(--hlc-paragraph);
}

/* Legend */
.hlc-legend {
    display: flex;
    flex-wrap: wrap;
    gap: 1.25rem;
    margin-bottom: 1.5rem;
}

.hlc-legend-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--hlc-paragraph);
}

.hlc-legend-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
}

/* Grand total */
.hlc-grand-total {
    text-align: center;
    padding: 2rem;
    background: var(--hlc-primary-light);
    border: 2px solid var(--hlc-primary);
    border-radius: var(--hlc-radius);
    margin-top: 2rem;
}

.hlc-grand-total-label {
    font-size: 0.875rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--hlc-meta);
    margin-bottom: 0.5rem;
}

.hlc-grand-total-value {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 800;
    color: var(--hlc-primary);
    line-height: 1.2;
}

.hlc-grand-total-sub {
    font-size: 1rem;
    color: var(--hlc-paragraph-alt);
    margin-top: 0.375rem;
}

/* ======================== RESULTS ACTIONS ======================== */
.hlc-results-actions {
    display: flex;
    gap: 1rem;
    justify-content: center;
    margin-top: 2rem;
}

/* ======================== PRINT STYLES ======================== */
@media print {
    .hlc-progress,
    .hlc-nav,
    .hlc-results-actions,
    .hlc-btn {
        display: none !important;
    }

    .hlc-calculator {
        max-width: 100%;
        padding: 0;
    }

    .hlc-step {
        display: block !important;
    }

    .hlc-step:not([data-step="6"]) {
        display: none !important;
    }

    .hlc-report-header {
        background: #111 !important;
        -webkit-print-color-adjust: exact;
        print-color-adjust: exact;
    }

    .hlc-chamber-result {
        break-inside: avoid;
    }
}

/* ======================== RESPONSIVE ======================== */
@media (max-width: 640px) {
    .hlc-steps-indicator {
        gap: 0;
    }

    .hlc-step-dot small {
        display: none;
    }

    .hlc-chamber-body,
    .hlc-panel-body {
        padding: 1rem;
    }

    .hlc-btn {
        padding: 0.875rem 1.5rem;
        font-size: 0.9375rem;
    }

    .hlc-form-grid-tight {
        grid-template-columns: repeat(2, 1fr);
    }

    .hlc-load-bar-label {
        flex: 0 0 100px;
        font-size: 0.8125rem;
    }
}

/* ======================== VALIDATION ======================== */
.hlc-field.hlc-error input,
.hlc-field.hlc-error select {
    border-color: #c62828;
    box-shadow: 0 0 0 3px rgba(198, 40, 40, 0.1);
}

.hlc-error-message {
    font-size: 0.8125rem;
    color: #c62828;
    font-weight: 500;
}

/* ======================== TOOLTIP ======================== */
.hlc-info-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: var(--hlc-midground-alt);
    color: var(--hlc-paragraph-alt);
    font-size: 0.6875rem;
    font-weight: 700;
    cursor: help;
    margin-left: 0.375rem;
    vertical-align: middle;
}