/* ============================================
   PRODUCT PAGES CSS
   Updated: November 2025
   Includes: Hero section, tab navigation, all tab content
   ============================================ */

/* ============================================
   HERO SECTION - Pure White Background
   ============================================ */

.product-hero {
    background: var(--pure-white);
    padding: 60px 60px 50px 60px;
}

.hero-container {
    max-width: 1200px;
    margin: 0 auto;
}

.product-hero h1 {
    font-size: 44px;
    font-weight: 700;
    color: var(--bronze);
    line-height: 1.15;
    letter-spacing: -1px;
    margin-bottom: 8px;
}

.product-subhead {
    font-family: 'Inter', sans-serif;
    font-size: 22px;
    font-weight: 600;
    color: #2D3748;
    line-height: 1.4;
    margin-top: 8px;
    margin-bottom: 24px;
}

.hero-content-row {
    display: grid;
    grid-template-columns: 1fr 400px;
    gap: 60px;
    align-items: start;
}

/* Hero Description */
.hero-description p {
    font-size: 16px;
    font-weight: 400;
    color: var(--slate-gray);
    line-height: 1.65;
    margin-bottom: 16px;
}

.hero-description p:last-child {
    margin-bottom: 0;
}

.hero-description .material-link {
    color: var(--bronze);
    text-decoration: none;
    font-weight: 600;
    transition: color 0.2s;
}

.hero-description .material-link:hover {
    color: #a85f1a;
    text-decoration: underline;
}

/* Product Image */
.product-image {
    width: 100%;
    height: auto;
    aspect-ratio: 1;
    object-fit: cover;
    border-radius: 12px;
    display: block;
}

/* Quick Start Card - White with Bronze Accent */
.quick-start-card {
    background: #FFFFFF;
    border-left: 4px solid #C67420;
    border-radius: 0 6px 6px 0;
    box-shadow: 0 2px 12px rgba(0,0,0,0.08);
    padding: 24px 28px;
    margin-top: 32px;
}

.quick-start-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 12px;
}

.quick-start-card h3 {
    font-size: 20px;
    font-weight: 600;
    color: var(--bronze);
    line-height: 1.3;
    margin: 0;
}

.quick-start-arrow {
    font-size: 16px;
    color: var(--bronze);
    font-weight: 700;
}

.quick-start-subtext {
    font-size: 14px;
    font-weight: 500;
    color: var(--slate-gray);
    margin-left: auto;
    font-style: italic;
}

.quick-start-steps {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.quick-start-step {
    font-size: 15px;
    color: var(--charcoal);
    line-height: 1.5;
}

.quick-start-step strong {
    font-weight: 700;
}

/* ============================================
   PRODUCT INFO SECTION - Warm White Background
   ============================================ */

.product-info-wrapper {
    background: var(--warm-white);
    padding: 40px 60px 0 60px;
}

.product-info-header {
    max-width: 1200px;
    margin: 0 auto;
    padding-bottom: 30px;
}

.product-info-header h2 {
    font-size: 32px;
    font-weight: 700;
    color: var(--bronze);
    margin-bottom: 12px;
    line-height: 1.3;
    text-align: center;
}

.product-info-header p {
    font-size: 16px;
    font-weight: 400;
    color: var(--slate-gray);
    line-height: 1.6;
    text-align: center;
}

/* ============================================
   TAB NAVIGATION
   ============================================ */

.tab-navigation {
    max-width: 1200px;
    margin: 0 auto;
    border-bottom: 2px solid #E2E8F0;
    display: flex;
    justify-content: center;
    gap: 40px;
    position: sticky;
    top: 0;
    background: var(--warm-white);
    z-index: 10;
}

.tab-button {
    background: none;
    border: none;
    padding: 16px 0;
    font-family: 'Inter', sans-serif;
    font-size: 15px;
    font-weight: 500;
    color: var(--charcoal);
    cursor: pointer;
    position: relative;
    transition: color 0.3s;
    display: flex;
    align-items: center;
    gap: 8px;
}

/* SVG Icons - Charcoal by default, Bronze when active */
.tab-icon {
    width: 18px;
    height: 18px;
    stroke: var(--charcoal);
    fill: none;
    stroke-width: 2;
    stroke-linecap: round;
    stroke-linejoin: round;
    transition: stroke 0.3s;
}

.tab-button:hover {
    color: var(--bronze);
}

.tab-button:hover .tab-icon {
    stroke: var(--bronze);
}

.tab-button.active {
    color: var(--bronze);
    font-weight: 600;
}

.tab-button.active .tab-icon {
    stroke: var(--bronze);
}

.tab-button.active::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--bronze);
}

/* ============================================
   TAB CONTENT - Warm White Background
   ============================================ */

.tab-content-wrapper {
    background: var(--warm-white);
    padding: 50px 60px 80px 60px;
}

.tab-content {
    max-width: 1200px;
    margin: 0 auto;
    display: none;
}

.tab-content.active {
    display: block;
}

.tab-content-inner {
    /* Container for tab content */
}

/* ===========================================
   ALLOY SPECIFICATIONS STYLES
   =========================================== */

/* Alloy Content Block (Toggle Target) - Legacy */
.alloy-content-block {
    display: none;
}

.alloy-content-block.active {
    display: block;
}

/* When only one alloy exists (no toggle), show it */
.specifications-content .alloy-content-block:only-child,
#tab-specifications .alloy-content-block:only-child,
[data-tab-content="specifications"] .alloy-content-block:only-child,
#specifications .tab-content-inner .alloy-content-block:only-child,
.tab-content-inner .alloy-content-block:only-child {
    display: block;
}

/* ===========================================
   ALLOY COMPARISON TABLE SYSTEM
   Updated: January 2026
   =========================================== */

/* Pill Toggle - Cast vs Sintered */
.pill-toggle {
    display: flex;
    justify-content: center;
    gap: 0;
    margin-bottom: 24px;
    background: #E2E8F0;
    border-radius: 9999px;
    padding: 4px;
    max-width: 400px;
    margin-left: auto;
    margin-right: auto;
}

.pill-toggle__btn {
    flex: 1;
    padding: 10px 24px;
    font-family: 'Inter', sans-serif;
    font-size: 14px;
    font-weight: 500;
    color: var(--slate-gray);
    background: transparent;
    border: none;
    border-radius: 9999px;
    cursor: pointer;
    transition: all 0.2s ease;
    white-space: nowrap;
}

.pill-toggle__btn:hover {
    color: var(--charcoal);
}

.pill-toggle__btn.is-active {
    background: var(--pure-white);
    color: var(--bronze);
    font-weight: 600;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

/* Contextual Introduction */
.alloy-context-intro {
    text-align: center;
    font-size: 0.9375rem;
    color: var(--slate-gray);
    margin-bottom: 24px;
    line-height: 1.6;
}

.alloy-context-intro strong {
    color: var(--bronze);
    font-weight: 600;
}

/* Alloy Panel (Cast or Sintered) */
.alloy-panel {
    display: none;
}

.alloy-panel.is-active {
    display: block;
}

/* Comparison Card */
.comparison-card {
    background: var(--pure-white);
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
    overflow: hidden;
}

.comparison-card__header {
    padding: 20px 24px 16px 24px;
    border-bottom: 2px solid var(--bronze);
}

.comparison-card__title {
    font-size: 20px;
    font-weight: 600;
    color: var(--bronze);
    margin: 0;
    line-height: 1.3;
}

.comparison-card__footer {
    padding: 16px 24px;
    background: var(--warm-white);
    border-top: 1px solid #E2E8F0;
}

/* Table Scroll Wrapper (for mobile horizontal scrolling) */
.table-scroll-wrapper {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

/* Comparison Table */
.comparison-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 14px;
    min-width: 600px;
}

.comparison-table th,
.comparison-table td {
    padding: 12px 16px;
    text-align: left;
    border-bottom: 1px solid #E2E8F0;
}

.comparison-table thead th {
    background: var(--warm-white);
    font-weight: 600;
    color: var(--charcoal);
    position: sticky;
    top: 0;
}

.comparison-table thead th:first-child {
    color: var(--slate-gray);
    font-weight: 500;
}

.comparison-table thead th[data-alloy] {
    text-align: center;
    font-size: 15px;
}

.comparison-table tbody td {
    color: var(--charcoal);
}

.comparison-table tbody td:first-child {
    font-weight: 500;
    color: var(--slate-gray);
}

.comparison-table tbody td:not(:first-child) {
    text-align: center;
}

/* Section Row (category headers within table) */
.comparison-table .section-row td {
    background: #F7F5F2;
    font-weight: 600;
    color: var(--bronze);
    font-size: 13px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    padding: 10px 16px;
    border-bottom: 2px solid #E2E8F0;
}

.comparison-table .section-row td:not(:first-child) {
    background: #F7F5F2;
}

/* Highlight Class - for stocking alloy columns */
.comparison-table th.highlight,
.comparison-table td.highlight {
    background: rgba(198, 116, 32, 0.08);
}

.comparison-table thead th.highlight {
    background: rgba(198, 116, 32, 0.15);
    color: var(--bronze);
}

.comparison-table .section-row td.highlight {
    background: rgba(198, 116, 32, 0.12);
}

/* Not Applicable Value Styling */
.comparison-table .val-na {
    color: #9CA3AF;
    font-style: italic;
}

/* Hover effect on rows */
.comparison-table tbody tr:not(.section-row):hover td {
    background: rgba(249, 246, 242, 0.5);
}

.comparison-table tbody tr:not(.section-row):hover td.highlight {
    background: rgba(198, 116, 32, 0.12);
}

/* Responsive: Comparison Table */
@media (max-width: 768px) {
    .pill-toggle {
        max-width: 100%;
    }

    .pill-toggle__btn {
        padding: 8px 16px;
        font-size: 13px;
    }

    .alloy-context-intro {
        font-size: 0.875rem;
        margin-bottom: 20px;
    }

    .comparison-card__header {
        padding: 16px 20px 12px 20px;
    }

    .comparison-card__title {
        font-size: 18px;
    }

    .comparison-card__footer {
        padding: 12px 20px;
    }

    .comparison-table {
        font-size: 13px;
    }

    .comparison-table th,
    .comparison-table td {
        padding: 10px 12px;
    }
}

@media (max-width: 480px) {
    .pill-toggle {
        margin-bottom: 20px;
    }

    .pill-toggle__btn {
        padding: 6px 12px;
        font-size: 12px;
    }

    .alloy-context-intro {
        font-size: 0.8125rem;
        margin-bottom: 16px;
        padding: 0 8px;
    }

    .comparison-card__header {
        padding: 14px 16px 10px 16px;
    }

    .comparison-card__title {
        font-size: 16px;
    }

    .comparison-card__footer {
        padding: 10px 16px;
    }

    .comparison-card__footer .specs-disclaimer {
        font-size: 0.75rem;
    }

    .comparison-table {
        font-size: 12px;
        min-width: 500px;
    }

    .comparison-table th,
    .comparison-table td {
        padding: 8px 10px;
    }

    .comparison-table .section-row td {
        font-size: 11px;
        padding: 8px 10px;
    }
}

/* Specs Row Container */
.specs-row {
    margin-bottom: 24px;
}

.specs-row:last-of-type {
    margin-bottom: 16px;
}

/* Two-Column Layout */
.specs-row--two-col {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
    align-items: stretch;
}

@media (max-width: 768px) {
    .specs-row--two-col {
        grid-template-columns: 1fr;
        gap: 16px;
    }
}

/* Full-Width Layout */
.specs-row--full {
    display: block;
}

.specs-row--full .specs-card {
    max-width: 100%;
}

/* Specs Card */
.specs-card {
    background-color: #FAF6F1;
    border-radius: 8px;
    padding: 24px;
    height: 100%;
    box-sizing: border-box;
}

/* Card Title with Bronze Underline */
.specs-card__title {
    color: #C67420;
    font-family: 'Inter', sans-serif;
    font-size: 1.25rem;
    font-weight: 600;
    margin: 0 0 12px 0;
    padding-bottom: 12px;
    border-bottom: 2px solid #C67420;
    line-height: 1.3;
}

/* Specs Definition List */
.specs-list {
    margin: 0;
    padding: 0;
}

.specs-list__item {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    padding: 10px 0;
    border-bottom: 1px solid rgba(0, 0, 0, 0.06);
    gap: 16px;
}

.specs-list__item:last-child {
    border-bottom: none;
    padding-bottom: 0;
}

.specs-list__item:first-child {
    padding-top: 4px;
}

.specs-list__item dt {
    color: #4B5563;
    font-size: 0.9rem;
    font-weight: 400;
    margin: 0;
    flex-shrink: 0;
}

.specs-list__item dd {
    color: #1F2937;
    font-size: 0.95rem;
    font-weight: 500;
    margin: 0;
    text-align: right;
}

/* Chemical Composition Table */
.specs-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.9rem;
    table-layout: fixed;
}

.specs-table thead tr {
    background-color: var(--warm-white);
}

.specs-table thead th {
    color: #C67420;
    font-weight: 600;
    padding: 12px 16px;
    text-align: center;
    border: none;
}

.specs-table tbody tr {
    background-color: #FFFFFF;
}

.specs-table tbody td {
    color: #1F2937;
    font-weight: 500;
    padding: 14px 16px;
    text-align: center;
    border: 1px solid #E5E7EB;
    border-top: none;
}

/* Responsive table */
@media (max-width: 576px) {
    .specs-table {
        font-size: 0.8rem;
    }

    .specs-table thead th,
    .specs-table tbody td {
        padding: 10px 8px;
    }
}

/* Disclaimer Text */
.specs-disclaimer {
    color: #6B7280;
    font-size: 0.85rem;
    font-style: italic;
    margin: 24px 0 0 0;
    padding: 0;
}

/* ===========================================
   ALLOY TOGGLE PILLS
   (Only appears when multiple alloys)
   =========================================== */

.alloy-toggle-container {
    display: flex;
    gap: 8px;
    margin-bottom: 24px;
    flex-wrap: wrap;
}

.alloy-toggle-btn {
    background: #FFFFFF;
    border: 1px solid #E5E7EB;
    border-radius: 9999px;
    padding: 8px 20px;
    font-family: 'Inter', sans-serif;
    font-size: 14px;
    font-weight: 500;
    color: #4B5563;
    cursor: pointer;
    transition: all 0.2s ease;
}

.alloy-toggle-btn:hover {
    border-color: #C67420;
    color: #C67420;
}

.alloy-toggle-btn.active {
    background: #C67420;
    border-color: #C67420;
    color: #FFFFFF;
}

/* ============================================
   SPECIFICATIONS TAB
   ============================================ */

.specs-top-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
    margin-bottom: 24px;
}

.spec-card {
    background: var(--pure-white);
    border-radius: 8px;
    padding: 32px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.06);
    transition: all 0.3s ease;
}

.spec-card:hover {
    box-shadow: 0 4px 16px rgba(0,0,0,0.12);
    transform: translateY(-2px);
}

.spec-card.full-width {
    grid-column: 1 / -1;
    margin-bottom: 24px;
}

.spec-card.full-width:last-child {
    margin-bottom: 0;
}

.spec-card-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 20px;
}

.spec-indicator {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    flex-shrink: 0;
}

.spec-indicator.bronze {
    background: var(--bronze);
}

.spec-indicator.blue {
    background: var(--material-blue-base);
}

.spec-card h3 {
    font-size: 20px;
    font-weight: 600;
    color: var(--charcoal);
    margin: 0;
    line-height: 1.3;
}

/* Material Grades */
.material-grade {
    margin-bottom: 20px;
}

.material-grade:last-child {
    margin-bottom: 0;
}

.material-grade h4 {
    font-size: 16px;
    font-weight: 700;
    color: var(--charcoal);
    margin-bottom: 8px;
}

.material-grade p {
    font-size: 15px;
    font-weight: 400;
    color: var(--slate-gray);
    line-height: 1.65;
    margin: 0;
}

.certification {
    font-size: 14px;
    font-weight: 600;
    color: var(--charcoal);
    margin-top: 20px;
    padding-top: 20px;
    border-top: 1px solid var(--warm-white);
}

/* Tolerance Rows */
.tolerance-row {
    margin-bottom: 16px;
}

.tolerance-row:last-child {
    margin-bottom: 0;
}

.tolerance-label {
    font-size: 14px;
    font-weight: 600;
    color: var(--charcoal);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 6px;
}

.tolerance-value {
    font-size: 15px;
    font-weight: 400;
    color: var(--slate-gray);
    line-height: 1.6;
}

/* Property Rows (Material Properties card) */
.property-row {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    padding: 10px 0;
    border-bottom: 1px solid #f0ede8;
}

.property-row:last-of-type {
    border-bottom: none;
}

.property-label {
    font-size: 14px;
    font-weight: 500;
    color: var(--charcoal);
}

.property-value {
    font-size: 14px;
    font-weight: 600;
    color: var(--slate-gray);
    text-align: right;
}

/* Spec Footnote */
.spec-footnote {
    font-size: 13px;
    font-style: italic;
    color: var(--slate-gray);
    margin-top: 20px;
    padding-top: 16px;
    border-top: 1px solid #f0ede8;
    line-height: 1.5;
}

/* Performance Characteristics */
.performance-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 32px;
    margin-top: 24px;
}

.performance-item {
    text-align: left;
}

.performance-label {
    font-size: 13px;
    font-weight: 600;
    color: var(--slate-gray);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 8px;
}

.performance-value {
    font-size: 24px;
    font-weight: 700;
    color: var(--bronze);
    margin-bottom: 4px;
    line-height: 1.2;
}

.performance-description {
    font-size: 14px;
    font-weight: 400;
    color: var(--slate-gray);
    line-height: 1.5;
}

/* Tolerance Tables (Standard Tolerances card) */
.tolerance-subhead {
    font-size: 16px;
    font-weight: 600;
    color: var(--charcoal);
    margin-bottom: 24px;
}

.tolerance-tables-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}

.tolerance-table h4 {
    font-size: 15px;
    font-weight: 700;
    color: var(--bronze);
    margin-bottom: 16px;
    padding-bottom: 8px;
    border-bottom: 2px solid var(--bronze);
}

.tolerance-table-row {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    padding: 8px 0;
    border-bottom: 1px solid #f0ede8;
}

.tolerance-table-row:last-child {
    border-bottom: none;
}

.tolerance-range {
    font-size: 14px;
    font-weight: 400;
    color: var(--charcoal);
}

.tolerance-spec {
    font-size: 14px;
    font-weight: 600;
    color: var(--slate-gray);
    font-family: 'Courier New', monospace;
}

/* Equivalent Specifications */
.equiv-intro {
    font-size: 15px;
    color: var(--slate-gray);
    margin-bottom: 20px;
    line-height: 1.6;
}

.equiv-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
}

.equiv-item {
    display: flex;
    align-items: baseline;
    gap: 12px;
    padding: 12px 0;
    border-bottom: 1px solid #f0ede8;
}

.equiv-label {
    font-size: 13px;
    font-weight: 700;
    color: var(--bronze);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    min-width: 80px;
}

.equiv-value {
    font-size: 14px;
    font-weight: 500;
    color: var(--charcoal);
}

/* ============================================
   SPECIFICATIONS TAB - New Simplified Layout
   ============================================ */

/* Specs Intro */
.specs-intro {
    font-size: 16px;
    font-weight: 400;
    color: var(--slate-gray);
    line-height: 1.7;
    margin-bottom: 32px;
    padding: 24px 32px;
    background: var(--pure-white);
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.06);
}

/* Section Headings within Specs Tab */
#specifications h3 {
    font-size: 22px;
    font-weight: 700;
    color: var(--bronze);
    margin: 32px 0 16px 0;
    padding-bottom: 8px;
    border-bottom: 2px solid var(--bronze);
}

#specifications h3:first-of-type {
    margin-top: 0;
}

#specifications h4 {
    font-size: 18px;
    font-weight: 600;
    color: var(--charcoal);
    margin: 24px 0 12px 0;
}

#specifications h5 {
    font-size: 15px;
    font-weight: 700;
    color: var(--charcoal);
    margin: 20px 0 12px 0;
    padding-bottom: 6px;
    border-bottom: 1px solid #E2E8F0;
}

/* Specs List (definition list for properties) */
.specs-list {
    background: var(--pure-white);
    border-radius: 8px;
    padding: 24px 32px;
    margin: 0 0 16px 0;
    box-shadow: 0 2px 8px rgba(0,0,0,0.06);
}

.specs-list .specs-row {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    padding: 12px 0;
    border-bottom: 1px solid #f0ede8;
}

.specs-list .specs-row:last-child {
    border-bottom: none;
}

.specs-list .specs-row dt {
    font-size: 14px;
    font-weight: 500;
    color: var(--charcoal);
}

.specs-list .specs-row dd {
    font-size: 14px;
    font-weight: 600;
    color: var(--slate-gray);
    text-align: right;
    margin: 0;
}

/* Specs Footnote */
.specs-footnote {
    font-size: 13px;
    font-style: italic;
    color: var(--slate-gray);
    margin: 16px 0 24px 0;
    line-height: 1.6;
}

/* Specs Grid Layout */
.specs-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
    margin-bottom: 24px;
}

.specs-grid-full {
    margin-bottom: 24px;
}

/* Specs Card Styling */
.specs-card {
    background: var(--pure-white);
    border: 1px solid #e5e5e5;
    border-radius: 8px;
    padding: 20px;
}

/* Specs Section Headings (within cards) */
.specs-card h3 {
    font-size: 18px;
    font-weight: 600;
    color: var(--bronze);
    margin: 0 0 12px 0;
    padding-bottom: 8px;
    border-bottom: 2px solid #e5c9a8;
}

/* Specs Tables */
.specs-table {
    width: 100%;
    font-size: 14px;
}

.specs-table tbody tr {
    border-bottom: 1px solid #f0f0f0;
}

.specs-table tbody tr:last-child {
    border-bottom: none;
}

.specs-table td {
    padding: 8px 0;
    color: var(--charcoal);
}

.specs-table td:first-child {
    font-weight: 500;
    color: var(--slate-gray);
    padding-right: 16px;
}

/* Centered table variant for chemical composition */
.specs-table.specs-table-centered {
    text-align: center;
}

.specs-table.specs-table-centered thead {
    background: #f9f9f9;
}

.specs-table.specs-table-centered th {
    padding: 8px 12px;
    font-weight: 500;
    color: var(--slate-gray);
}

.specs-table.specs-table-centered td {
    padding: 8px 12px;
}

/* Small text within specs tables */
.specs-table .specs-note {
    font-size: 12px;
    color: #9ca3af;
    margin-left: 4px;
}

/* Responsive: Stack on mobile */
@media (max-width: 768px) {
    .specs-grid {
        grid-template-columns: 1fr;
    }
}

/* Performance Limits Cards */
.performance-limits {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
    margin-bottom: 16px;
}

.limit-card {
    background: var(--pure-white);
    border-radius: 8px;
    padding: 20px 16px;
    text-align: center;
    box-shadow: 0 2px 8px rgba(0,0,0,0.06);
    transition: all 0.3s ease;
}

.limit-card:hover {
    box-shadow: 0 4px 16px rgba(0,0,0,0.12);
    transform: translateY(-2px);
}

.limit-label {
    display: block;
    font-size: 12px;
    font-weight: 600;
    color: var(--slate-gray);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 8px;
}

.limit-value {
    display: block;
    font-size: 16px;
    font-weight: 700;
    color: var(--bronze);
    line-height: 1.3;
}

/* Performance Highlight Cards */
.highlight-cards {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
    margin-bottom: 32px;
}

.highlight-card {
    background: var(--pure-white);
    border-radius: 8px;
    padding: 24px 16px;
    text-align: center;
    box-shadow: 0 2px 8px rgba(0,0,0,0.06);
    transition: all 0.3s ease;
}

.highlight-card:hover {
    box-shadow: 0 4px 16px rgba(0,0,0,0.12);
    transform: translateY(-2px);
}

.highlight-label {
    display: block;
    font-size: 11px;
    font-weight: 600;
    color: var(--slate-gray);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 8px;
}

.highlight-value {
    display: block;
    font-size: 28px;
    font-weight: 700;
    color: var(--bronze);
    line-height: 1.2;
    margin-bottom: 4px;
}

.highlight-unit {
    display: block;
    font-size: 13px;
    font-weight: 500;
    color: var(--slate-gray);
}

/* Tolerance List (definition list for tolerances) */
.tolerance-list {
    background: var(--pure-white);
    border-radius: 8px;
    padding: 16px 24px;
    margin: 0 0 16px 0;
    box-shadow: 0 1px 4px rgba(0,0,0,0.04);
}

.tolerance-list .tolerance-row {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    padding: 10px 0;
    border-bottom: 1px solid #f0ede8;
}

.tolerance-list .tolerance-row:last-child {
    border-bottom: none;
}

.tolerance-list dt {
    font-size: 14px;
    font-weight: 400;
    color: var(--charcoal);
}

.tolerance-list dd {
    font-size: 14px;
    font-weight: 600;
    color: var(--slate-gray);
    font-family: 'Courier New', monospace;
    margin: 0;
}

/* Responsive: Performance Limits & Highlights */
@media (max-width: 1024px) {
    .performance-limits,
    .highlight-cards {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 640px) {
    .performance-limits,
    .highlight-cards {
        grid-template-columns: 1fr;
    }

    .specs-intro {
        padding: 20px 24px;
        font-size: 15px;
    }

    .specs-list {
        padding: 20px 24px;
    }

    .specs-list .specs-row {
        flex-direction: column;
        gap: 4px;
        align-items: flex-start;
    }

    .specs-list .specs-row dd {
        text-align: left;
    }

    .tolerance-list {
        padding: 12px 20px;
    }

    .highlight-value {
        font-size: 24px;
    }

    #specifications h3 {
        font-size: 20px;
    }

    #specifications h4 {
        font-size: 16px;
    }

    #specifications h5 {
        font-size: 14px;
    }
}

/* ============================================
   APPLICATIONS TAB
   ============================================ */

/* Tab Intro Box - Reusable for Applications and FAQs */
.tab-intro-box {
    background: var(--pure-white);
    border-radius: 8px;
    padding: 24px 32px;
    margin-bottom: 40px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.06);
}

.tab-intro-box p {
    font-size: 16px;
    font-weight: 400;
    color: var(--slate-gray);
    line-height: 1.7;
    margin: 0;
}

/* Centered variant for FAQs */
.tab-intro-box.centered {
    text-align: center;
}

.tab-intro-box.centered p {
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

/* Legacy class - kept for backward compatibility */
.applications-intro {
    font-size: 16px;
    font-weight: 400;
    color: var(--slate-gray);
    line-height: 1.7;
    margin-bottom: 32px;
}

/* Applications Grid */
.applications-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

/* 2-column layout for detailed cards */
.applications-grid.applications-grid-2col {
    grid-template-columns: repeat(2, 1fr);
}

/* Application Card */
.application-card {
    background: var(--pure-white);
    border-radius: 8px;
    padding: 32px;
    box-shadow: 0 1px 3px rgba(0,0,0,0.04);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.application-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(0,0,0,0.08);
}

/* Icon Container */
.application-icon {
    width: 56px;
    height: 56px;
    background-color: var(--pure-white);
    border: 1px solid #E2E8F0;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
    transition: border-color 0.3s ease;
}

.application-card:hover .application-icon {
    border-color: var(--bronze);
}

.application-icon svg {
    width: 28px;
    height: 28px;
    color: var(--bronze);
}

/* Card Typography */
.application-card h3 {
    font-size: 20px;
    font-weight: 600;
    color: var(--bronze);
    margin-bottom: 16px;
    line-height: 1.3;
}

.application-card p {
    font-size: 15px;
    line-height: 1.7;
    color: var(--slate-gray);
    margin: 0;
}

.application-card strong {
    font-weight: 600;
    color: inherit;
}

/* Legacy styles for backward compatibility */
.application-card.application-card-detailed {
    padding: 32px;
}

.application-card.application-card-detailed h3 {
    margin-bottom: 16px;
}

.application-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 12px;
}

.application-arrow {
    font-size: 18px;
    color: var(--bronze);
    flex-shrink: 0;
    margin-left: 12px;
    transition: transform 0.3s ease;
}

.application-card:hover .application-arrow {
    transform: translateX(4px);
}

/* ============================================
   CUSTOM OPTIONS TAB
   ============================================ */

/* CTA Banner (Top of Custom Options) */
.cta-banner {
    background: var(--pure-white);
    border-radius: 8px;
    padding: 24px 32px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
    margin-bottom: 40px;
}

.cta-banner-content h3 {
    color: var(--bronze);
    font-size: 22px;
    font-weight: 700;
    margin-bottom: 4px;
}

.cta-banner-content p {
    color: var(--slate-gray);
    font-size: 16px;
    margin: 0;
}

.cta-button {
    display: inline-flex;
    flex-direction: column;
    align-items: center;
    background-color: var(--enterprise-green-base);
    color: var(--pure-white);
    padding: 12px 28px;
    border-radius: 4px;
    text-decoration: none;
    transition: background-color 0.2s ease, transform 0.2s ease, box-shadow 0.2s ease;
    white-space: nowrap;
    text-align: center;
}

.cta-button:hover {
    background-color: var(--enterprise-green-light);
    color: var(--pure-white);
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(2, 150, 89, 0.3);
}

.cta-button .cta-label {
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    opacity: 0.9;
}

.cta-button .cta-action {
    font-size: 16px;
    font-weight: 700;
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.cta-button .cta-action svg {
    width: 16px;
    height: 16px;
}

/* Two-Column Layout */
.options-columns {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    align-items: start;
}

.options-column {
    background: var(--pure-white);
    border-radius: 8px;
    padding: 32px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
    transition: all 0.3s ease;
}

.options-column:hover {
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.12);
    transform: translateY(-2px);
}

/* Section Header Styles */
.section-header {
    color: var(--bronze);
    font-size: 22px;
    font-weight: 700;
    margin-bottom: 12px;
}

.section-intro {
    color: var(--slate-gray);
    font-size: 16px;
    line-height: 1.6;
    margin-bottom: 24px;
}

/* Groove Patterns Table */
.groove-table {
    width: 100%;
    border-collapse: collapse;
}

.groove-table th,
.groove-table td {
    text-align: left;
    padding: 12px 16px;
    border-bottom: 1px solid #E2E8F0;
}

.groove-table th {
    background-color: var(--light-gray);
    color: var(--charcoal);
    font-size: 14px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.groove-table td:first-child {
    font-weight: 600;
    color: var(--charcoal);
    white-space: nowrap;
}

.groove-table td:last-child {
    color: var(--slate-gray);
    font-size: 15px;
}

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

.groove-table tr:hover {
    background-color: var(--warm-white);
}

/* Graphite Options Content */
.graphite-option {
    margin-bottom: 24px;
}

.graphite-option:last-of-type {
    margin-bottom: 24px;
}

.graphite-option h4 {
    color: var(--charcoal);
    font-size: 17px;
    font-weight: 600;
    margin-bottom: 8px;
}

.graphite-option p {
    color: var(--slate-gray);
    font-size: 15px;
    line-height: 1.6;
    margin: 0;
}

/* Installation Note Callout */
.info-callout {
    background: var(--light-gray);
    border-left: 4px solid var(--bronze);
    border-radius: 0 8px 8px 0;
    padding: 16px 20px;
    margin-top: 8px;
}

.info-callout-header {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 6px;
}

.info-callout-header svg {
    width: 18px;
    height: 18px;
    color: var(--bronze);
    flex-shrink: 0;
}

.info-callout-header span {
    color: var(--charcoal);
    font-size: 14px;
    font-weight: 600;
}

.info-callout p {
    color: var(--slate-gray);
    font-size: 14px;
    line-height: 1.5;
    margin: 0;
}

/* Legacy styles (keep for backward compatibility with old pages) */
.custom-options-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
    margin-bottom: 24px;
}

.custom-option-card {
    background: var(--pure-white);
    border-radius: 8px;
    padding: 32px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.06);
    transition: all 0.3s ease;
}

.custom-option-card:hover {
    box-shadow: 0 4px 16px rgba(0,0,0,0.12);
    transform: translateY(-2px);
}

.custom-option-card h3 {
    font-size: 20px;
    font-weight: 600;
    color: var(--bronze);
    margin-bottom: 16px;
    line-height: 1.3;
}

.custom-option-card ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.custom-option-card li {
    font-size: 15px;
    font-weight: 400;
    color: var(--charcoal);
    line-height: 1.65;
    margin-bottom: 12px;
    padding-left: 24px;
    position: relative;
}

.custom-option-card li:last-child {
    margin-bottom: 0;
}

.custom-option-card li::before {
    content: '•';
    position: absolute;
    left: 0;
    color: var(--bronze);
    font-size: 18px;
    font-weight: 700;
}

.custom-cta-card {
    background: var(--pure-white);
    border-radius: 8px;
    padding: 32px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: 0 2px 8px rgba(0,0,0,0.06);
}

.custom-cta-content h3 {
    font-size: 22px;
    font-weight: 700;
    color: var(--bronze);
    margin-bottom: 8px;
}

.custom-cta-content p {
    font-size: 16px;
    font-weight: 400;
    color: var(--slate-gray);
    line-height: 1.6;
    margin: 0;
}

.btn-request-quote {
    font-family: 'Inter', sans-serif;
    font-weight: 600;
    font-size: 16px;
    padding: 16px 32px;
    background: var(--enterprise-green-base);
    color: var(--pure-white);
    text-decoration: none;
    border-radius: 4px;
    border: 2px solid var(--enterprise-green-base);
    transition: all 0.3s;
    white-space: nowrap;
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.btn-request-quote:hover {
    background: var(--enterprise-green-light);
    border-color: var(--enterprise-green-light);
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(2, 150, 89, 0.3);
}

.btn-request-quote::after {
    content: '→';
    font-size: 18px;
}

/* ============================================
   FAQS TAB - Redesigned Card-Based Accordion
   ============================================

   FAQ ICON SYSTEM DOCUMENTATION
   -----------------------------

   Icon Files Location: /images/icons/faq/
   Available icons:
     - icon-info.svg        → General information questions
     - icon-lightning.svg   → Comparison/performance questions
     - icon-tag.svg         → Specification questions
     - icon-wrench.svg      → Installation questions
     - icon-gear.svg        → Calculation/technical questions
     - icon-thermometer.svg → Temperature questions
     - icon-chat.svg        → Process questions
     - icon-leaf.svg        → Environmental/lead-free questions

   How to Use:
   1. Add inline SVG inside .faq-icon-container with class="faq-type-icon"
   2. SVGs use stroke="currentColor" for CSS color control
   3. The CSS handles state-based color switching automatically:
      - Collapsed: Bronze (#C67420) icon on white background
      - Expanded:  White (#FFFFFF) icon on bronze background

   To Add a New Icon Type:
   1. Create optimized SVG with viewBox="0 0 24 24" and stroke="currentColor"
   2. Save to /images/icons/faq/icon-[name].svg
   3. Use inline in HTML with class="faq-type-icon"

   Color Control via CSS:
   - .faq-type-icon { stroke: var(--bronze); }
   - .faq-item.open .faq-type-icon { stroke: var(--pure-white); }

   ============================================ */

/* FAQ Section Container */
.faq-section {
    max-width: 900px;
    margin: 0 auto;
}

/* FAQ Header */
.faq-header {
    text-align: center;
    margin-bottom: 40px;
}

.faq-title {
    font-family: var(--font-primary);
    font-size: 38px;
    font-weight: 700;
    color: var(--bronze);
    margin: 0 0 16px 0;
    line-height: 1.2;
}

.faq-title-underline {
    width: 60px;
    height: 3px;
    background-color: var(--bronze);
    margin: 0 auto 16px auto;
}

.faq-subtitle {
    font-family: var(--font-primary);
    font-size: 16px;
    font-weight: 400;
    color: var(--slate-gray);
    line-height: 1.6;
    margin: 0;
    margin-left: auto;
    margin-right: auto;
}

/* FAQ List */
.faq-list {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

/* FAQ Item Card */
.faq-item {
    background-color: var(--pure-white);
    border-radius: 8px;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.08);
    overflow: hidden;
    border: 2px solid transparent;
    transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.faq-item:hover {
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.faq-item.open {
    border-color: var(--bronze);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

/* FAQ Question Button */
.faq-question {
    width: 100%;
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 20px 24px;
    background: none;
    border: none;
    cursor: pointer;
    text-align: left;
    transition: background-color 0.2s ease;
}

.faq-question:hover {
    background-color: rgba(249, 246, 242, 0.5);
}

.faq-question:focus-visible {
    outline: 3px solid var(--bronze);
    outline-offset: 2px;
}

/* FAQ Icon Container */
.faq-icon-container {
    width: 48px;
    height: 48px;
    min-width: 48px;
    border-radius: 50%;
    background-color: var(--pure-white);
    border: 2px solid var(--bronze);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background-color 0.3s ease, border-color 0.3s ease;
}

.faq-item.open .faq-icon-container {
    background-color: var(--bronze);
    border-color: var(--bronze);
}

/* FAQ Type Icon (inside container)
   Uses currentColor inheritance - set color on container, SVG inherits via stroke="currentColor" */
.faq-type-icon {
    width: 22px;
    height: 22px;
    color: var(--bronze);
    transition: color 0.3s ease;
}

.faq-item.open .faq-type-icon {
    color: var(--pure-white);
}

/* Question Text */
.faq-question-text {
    flex: 1;
    font-family: var(--font-primary);
    font-size: 16px;
    font-weight: 600;
    color: var(--charcoal);
    line-height: 1.4;
    transition: color 0.3s ease;
}

.faq-item.open .faq-question-text {
    color: var(--bronze);
}

/* Chevron Icon */
.faq-chevron {
    flex-shrink: 0;
    width: 24px;
    height: 24px;
    stroke: var(--slate-gray);
    transition: transform 0.3s ease, stroke 0.3s ease;
}

.faq-item.open .faq-chevron {
    transform: rotate(180deg);
    stroke: var(--bronze);
}

/* Answer Area */
.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
}

.faq-item.open .faq-answer {
    max-height: 600px;
}

/* Answer Content */
.faq-answer-content {
    padding: 0 24px 24px 88px;
    font-family: var(--font-primary);
    font-size: 15px;
    line-height: 1.65;
    color: var(--charcoal);
    border-top: 1px solid #E2E8F0;
    margin: 0 24px 0 24px;
    padding-top: 20px;
    margin-left: 0;
    margin-right: 0;
}

.faq-answer-content p {
    margin-bottom: 12px;
}

.faq-answer-content p:last-child {
    margin-bottom: 0;
}

.faq-answer-content ul {
    margin: 12px 0;
    padding-left: 20px;
}

.faq-answer-content li {
    margin-bottom: 8px;
}

.faq-answer-content li:last-child {
    margin-bottom: 0;
}

.faq-answer-content a {
    color: var(--bronze);
    text-decoration: none;
    font-weight: 600;
    transition: color 0.2s ease;
}

.faq-answer-content a:hover {
    color: #a85f1a;
    text-decoration: underline;
}

/* Reduced Motion Support */
@media (prefers-reduced-motion: reduce) {
    .faq-item,
    .faq-icon-container,
    .faq-type-icon,
    .faq-question-text,
    .faq-chevron,
    .faq-answer {
        transition: none;
    }
}

/* ============================================
   RESPONSIVE DESIGN - Mobile
   ============================================ */

@media (max-width: 1024px) {
    .product-hero,
    .product-info-wrapper,
    .tab-content-wrapper {
        padding-left: 30px;
        padding-right: 30px;
    }
    
    .product-hero h1 {
        font-size: 42px;
    }

    .product-subhead {
        font-size: 20px;
    }
    
    .hero-content-row {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    
    .quick-start-header {
        flex-wrap: wrap;
    }
    
    .quick-start-subtext {
        margin-left: 0;
        width: 100%;
    }
    
    .tab-navigation {
        gap: 24px;
        overflow-x: auto;
    }
    
    .specs-top-grid,
    .custom-options-grid,
    .options-columns {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .cta-banner,
    .tab-intro-box {
        padding: 20px 24px;
    }

    .cta-banner {
        flex-direction: column;
        text-align: center;
    }

    .cta-banner-content {
        margin-bottom: 8px;
    }

    .performance-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 24px;
    }

    .tolerance-tables-grid {
        grid-template-columns: 1fr;
        gap: 28px;
    }

    .equiv-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .applications-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
    }

    .applications-grid.applications-grid-2col {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .custom-cta-card {
        flex-direction: column;
        text-align: center;
        gap: 20px;
    }
    
    /* FAQ Section - Tablet */
    .faq-title {
        font-size: 32px;
    }

    .faq-subtitle {
        font-size: 15px;
    }

    .faq-question {
        padding: 16px 20px;
        gap: 12px;
    }

    .faq-icon-container {
        width: 44px;
        height: 44px;
        min-width: 44px;
    }

    .faq-type-icon {
        width: 20px;
        height: 20px;
    }

    .faq-question-text {
        font-size: 15px;
    }

    .faq-chevron {
        width: 22px;
        height: 22px;
    }

    .faq-answer-content {
        padding: 16px 20px 20px 76px;
        font-size: 14px;
    }
}

/* ============================================
   RESPONSIVE DESIGN - Tablet (768px)
   ============================================ */

@media (max-width: 768px) {
    /* Hero Section - Tablet */
    .product-hero {
        padding: 50px 24px 40px 24px;
    }

    .product-hero h1 {
        font-size: 38px;
    }

    .product-subhead {
        font-size: 18px;
        margin-bottom: 20px;
    }

    .hero-content-row {
        gap: 24px;
    }

    .hero-description p {
        font-size: 15px;
    }

    /* Product image - constrain max size on tablet */
    .hero-right {
        max-width: 400px;
        margin: 0 auto;
    }

    /* Quick Start Card - Tablet */
    .quick-start-card {
        padding: 20px 24px;
        margin-top: 24px;
    }

    .quick-start-card h3 {
        font-size: 18px;
    }

    .quick-start-step {
        font-size: 14px;
    }

    /* Product Info Header - Tablet */
    .product-info-header h2 {
        font-size: 28px;
    }

    .product-info-header p {
        font-size: 15px;
    }

    /* Tab Navigation - Tablet */
    .tab-navigation {
        gap: 16px;
        padding: 0 16px;
        justify-content: flex-start;
        -webkit-overflow-scrolling: touch;
        scrollbar-width: none; /* Firefox */
        -ms-overflow-style: none; /* IE/Edge */
    }

    .tab-navigation::-webkit-scrollbar {
        display: none; /* Chrome/Safari */
    }

    .tab-button {
        font-size: 14px;
        padding: 14px 0;
        gap: 6px;
        white-space: nowrap;
        flex-shrink: 0;
    }

    .tab-icon {
        width: 16px;
        height: 16px;
    }

    /* Specifications Tab - Tablet */
    .specs-card {
        padding: 20px;
    }

    .specs-card__title {
        font-size: 1.1rem;
        margin-bottom: 10px;
        padding-bottom: 10px;
    }

    .specs-list__item {
        padding: 8px 0;
        gap: 12px;
    }

    .specs-list__item dt {
        font-size: 0.85rem;
    }

    .specs-list__item dd {
        font-size: 0.9rem;
    }

    .spec-card {
        padding: 24px;
    }

    .specs-intro {
        padding: 20px 24px;
        font-size: 15px;
        margin-bottom: 24px;
    }

    #specifications h3 {
        font-size: 20px;
        margin: 24px 0 12px 0;
    }

    #specifications h4 {
        font-size: 16px;
        margin: 20px 0 10px 0;
    }

    .performance-value {
        font-size: 22px;
    }

    .performance-label {
        font-size: 12px;
    }

    .performance-description {
        font-size: 13px;
    }

    .tolerance-tables-grid {
        gap: 24px;
    }

    .equiv-grid {
        gap: 12px;
    }

    .alloy-toggle-btn {
        padding: 6px 16px;
        font-size: 13px;
    }

    .limit-card {
        padding: 16px 12px;
    }

    .limit-label {
        font-size: 11px;
    }

    .limit-value {
        font-size: 15px;
    }

    .highlight-card {
        padding: 20px 14px;
    }

    .highlight-label {
        font-size: 10px;
    }

    .highlight-value {
        font-size: 24px;
    }

    .highlight-unit {
        font-size: 12px;
    }

    /* Applications Tab - Tablet */
    .tab-intro-box {
        padding: 20px 24px;
        margin-bottom: 32px;
    }

    .tab-intro-box p {
        font-size: 15px;
    }

    .applications-grid {
        gap: 20px;
    }

    .application-card {
        padding: 28px;
    }

    .application-card h3 {
        font-size: 18px;
        margin-bottom: 14px;
    }

    .application-card p {
        font-size: 14px;
        line-height: 1.65;
    }

    .application-icon {
        width: 52px;
        height: 52px;
        margin-bottom: 16px;
    }

    .application-icon svg {
        width: 26px;
        height: 26px;
    }

    /* Custom Options Tab - Tablet */
    .cta-banner {
        padding: 20px 24px;
        gap: 20px;
        margin-bottom: 32px;
    }

    .cta-banner-content h3 {
        font-size: 20px;
    }

    .cta-banner-content p {
        font-size: 15px;
    }

    .cta-button {
        padding: 10px 24px;
    }

    .cta-button .cta-label {
        font-size: 10px;
    }

    .cta-button .cta-action {
        font-size: 15px;
    }

    .options-columns {
        gap: 24px;
    }

    .options-column {
        padding: 28px;
    }

    .section-header {
        font-size: 20px;
        margin-bottom: 10px;
    }

    .section-intro {
        font-size: 15px;
        margin-bottom: 20px;
    }

    .groove-table th,
    .groove-table td {
        padding: 10px 14px;
    }

    .groove-table th {
        font-size: 13px;
    }

    .groove-table td:last-child {
        font-size: 14px;
    }

    .graphite-option h4 {
        font-size: 16px;
    }

    .graphite-option p {
        font-size: 14px;
    }

    .info-callout {
        padding: 14px 18px;
    }

    .info-callout-header span {
        font-size: 13px;
    }

    .info-callout p {
        font-size: 13px;
    }

    .custom-option-card {
        padding: 28px;
    }

    .custom-option-card h3 {
        font-size: 18px;
        margin-bottom: 14px;
    }

    .custom-option-card li {
        font-size: 14px;
        margin-bottom: 10px;
        padding-left: 20px;
    }

    .custom-cta-card {
        padding: 28px;
        gap: 20px;
    }

    .custom-cta-content h3 {
        font-size: 20px;
    }

    .custom-cta-content p {
        font-size: 15px;
    }

    .btn-request-quote {
        font-size: 15px;
        padding: 14px 28px;
    }

    /* FAQs Tab - Tablet */
    .faq-header {
        margin-bottom: 32px;
    }

    .faq-title {
        font-size: 30px;
        margin-bottom: 12px;
    }

    .faq-title-underline {
        width: 50px;
        height: 3px;
        margin-bottom: 12px;
    }

    .faq-subtitle {
        font-size: 15px;
    }

    .faq-list {
        gap: 14px;
    }

    .faq-question {
        padding: 18px 20px;
        gap: 14px;
    }

    .faq-icon-container {
        width: 42px;
        height: 42px;
        min-width: 42px;
    }

    .faq-type-icon {
        width: 20px;
        height: 20px;
    }

    .faq-question-text {
        font-size: 15px;
    }

    .faq-chevron {
        width: 22px;
        height: 22px;
    }

    .faq-answer-content {
        padding: 16px 20px 20px 56px;
        font-size: 14px;
        margin: 0 20px;
    }

    .faq-answer-content ul {
        padding-left: 18px;
    }

    .faq-answer-content li {
        margin-bottom: 6px;
    }
}

@media (max-width: 640px) {
    .performance-grid,
    .applications-grid,
    .applications-grid.applications-grid-2col {
        grid-template-columns: 1fr;
    }

    .equiv-grid {
        grid-template-columns: 1fr;
    }

    .property-row {
        flex-direction: column;
        gap: 4px;
        align-items: flex-start;
    }

    .property-value {
        text-align: left;
    }

    .options-column {
        padding: 24px;
    }

    .section-header {
        font-size: 20px;
    }

    .cta-banner,
    .tab-intro-box {
        padding: 20px;
    }

    .tab-intro-box p {
        font-size: 15px;
    }

    .cta-banner-content h3 {
        font-size: 20px;
    }

    .groove-table th,
    .groove-table td {
        padding: 10px 12px;
        font-size: 14px;
    }

    .groove-table td:last-child {
        font-size: 13px;
    }

    .application-card {
        padding: 24px;
    }

    .application-icon {
        width: 48px;
        height: 48px;
    }

    .application-icon svg {
        width: 24px;
        height: 24px;
    }

    /* FAQ Section - Mobile */
    .faq-header {
        margin-bottom: 32px;
    }

    .faq-title {
        font-size: 28px;
    }

    .faq-subtitle {
        font-size: 14px;
    }

    .faq-list {
        gap: 12px;
    }

    .faq-question {
        padding: 16px;
        gap: 12px;
    }

    .faq-icon-container {
        width: 40px;
        height: 40px;
        min-width: 40px;
    }

    .faq-type-icon {
        width: 18px;
        height: 18px;
    }

    .faq-question-text {
        font-size: 14px;
    }

    .faq-chevron {
        width: 20px;
        height: 20px;
    }

    .faq-answer-content {
        padding: 16px 16px 20px 16px;
        margin: 0 16px;
    }
}

/* ============================================
   RESPONSIVE DESIGN - Small Phone (480px)
   ============================================ */

@media (max-width: 480px) {
    /* Hero Section - Small Phone */
    .product-hero {
        padding: 40px 16px 32px 16px;
    }

    .product-hero h1 {
        font-size: 32px;
        letter-spacing: -0.5px;
    }

    .product-subhead {
        font-size: 16px;
        margin-bottom: 16px;
    }

    .hero-content-row {
        gap: 20px;
    }

    .hero-description p {
        font-size: 14px;
        line-height: 1.6;
    }

    /* Product image - full width on small phones */
    .hero-right {
        max-width: 100%;
    }

    .product-image {
        border-radius: 8px;
    }

    /* Quick Start Card - Small Phone */
    .quick-start-card {
        padding: 16px 20px;
        margin-top: 20px;
    }

    .quick-start-header {
        gap: 8px;
        margin-bottom: 10px;
    }

    .quick-start-card h3 {
        font-size: 16px;
    }

    .quick-start-arrow {
        font-size: 14px;
    }

    .quick-start-subtext {
        font-size: 13px;
    }

    .quick-start-step {
        font-size: 13px;
    }

    /* Product Info Section - Small Phone */
    .product-info-wrapper {
        padding: 32px 16px 0 16px;
    }

    .product-info-header {
        padding-bottom: 24px;
    }

    .product-info-header h2 {
        font-size: 24px;
        margin-bottom: 8px;
    }

    .product-info-header p {
        font-size: 14px;
    }

    /* Tab Content - Small Phone */
    .tab-content-wrapper {
        padding: 40px 16px 60px 16px;
    }

    /* Tab Navigation - Small Phone */
    .tab-navigation {
        gap: 12px;
        padding: 0 12px;
    }

    .tab-button {
        font-size: 13px;
        padding: 12px 0;
        gap: 5px;
    }

    .tab-icon {
        width: 15px;
        height: 15px;
    }

    .tab-button.active::after {
        height: 2px;
    }

    /* Specifications Tab - Small Phone */
    .specs-card {
        padding: 16px;
    }

    .specs-card__title {
        font-size: 1rem;
        margin-bottom: 8px;
        padding-bottom: 8px;
    }

    .specs-list__item {
        flex-direction: column;
        align-items: flex-start;
        gap: 2px;
        padding: 8px 0;
    }

    .specs-list__item dt {
        font-size: 0.8rem;
    }

    .specs-list__item dd {
        font-size: 0.85rem;
        text-align: left;
    }

    .specs-table thead th,
    .specs-table tbody td {
        padding: 8px 6px;
        font-size: 0.75rem;
    }

    .specs-disclaimer {
        font-size: 0.8rem;
        margin-top: 16px;
    }

    .spec-card {
        padding: 20px;
    }

    .spec-card h3 {
        font-size: 18px;
    }

    .specs-intro {
        padding: 16px 20px;
        font-size: 14px;
        margin-bottom: 20px;
    }

    #specifications h3 {
        font-size: 18px;
        margin: 20px 0 10px 0;
    }

    #specifications h4 {
        font-size: 15px;
        margin: 16px 0 8px 0;
    }

    #specifications h5 {
        font-size: 13px;
    }

    .performance-grid {
        gap: 16px;
    }

    .performance-value {
        font-size: 20px;
    }

    .performance-label {
        font-size: 11px;
        margin-bottom: 6px;
    }

    .performance-description {
        font-size: 12px;
    }

    .tolerance-tables-grid {
        gap: 20px;
    }

    .tolerance-table h4 {
        font-size: 14px;
        margin-bottom: 12px;
        padding-bottom: 6px;
    }

    .tolerance-table-row {
        padding: 6px 0;
    }

    .tolerance-range,
    .tolerance-spec {
        font-size: 13px;
    }

    .equiv-item {
        flex-direction: column;
        gap: 4px;
        padding: 10px 0;
    }

    .equiv-label {
        font-size: 12px;
        min-width: auto;
    }

    .equiv-value {
        font-size: 13px;
    }

    .alloy-toggle-container {
        gap: 6px;
        margin-bottom: 20px;
    }

    .alloy-toggle-btn {
        padding: 5px 12px;
        font-size: 12px;
    }

    .limit-card {
        padding: 14px 10px;
    }

    .limit-label {
        font-size: 10px;
        margin-bottom: 6px;
    }

    .limit-value {
        font-size: 14px;
    }

    .highlight-card {
        padding: 16px 12px;
    }

    .highlight-label {
        font-size: 9px;
        margin-bottom: 6px;
    }

    .highlight-value {
        font-size: 22px;
    }

    .highlight-unit {
        font-size: 11px;
    }

    .tolerance-list {
        padding: 12px 16px;
    }

    .tolerance-list .tolerance-row {
        padding: 8px 0;
    }

    .tolerance-list dt,
    .tolerance-list dd {
        font-size: 13px;
    }

    /* Applications Tab - Small Phone */
    .tab-intro-box {
        padding: 16px 20px;
        margin-bottom: 24px;
    }

    .tab-intro-box p {
        font-size: 14px;
        line-height: 1.6;
    }

    .applications-grid {
        gap: 16px;
    }

    .application-card {
        padding: 20px;
    }

    .application-card h3 {
        font-size: 17px;
        margin-bottom: 12px;
    }

    .application-card p {
        font-size: 13px;
        line-height: 1.6;
    }

    .application-icon {
        width: 44px;
        height: 44px;
        border-radius: 10px;
        margin-bottom: 14px;
    }

    .application-icon svg {
        width: 22px;
        height: 22px;
    }

    .applications-intro {
        font-size: 14px;
        margin-bottom: 24px;
    }

    /* Custom Options Tab - Small Phone */
    .cta-banner {
        padding: 16px 20px;
        gap: 16px;
        margin-bottom: 24px;
    }

    .cta-banner-content h3 {
        font-size: 18px;
        margin-bottom: 2px;
    }

    .cta-banner-content p {
        font-size: 14px;
    }

    .cta-button {
        padding: 8px 20px;
        width: 100%;
    }

    .cta-button .cta-label {
        font-size: 9px;
    }

    .cta-button .cta-action {
        font-size: 14px;
    }

    .options-columns {
        gap: 16px;
    }

    .options-column {
        padding: 20px;
    }

    .section-header {
        font-size: 18px;
        margin-bottom: 8px;
    }

    .section-intro {
        font-size: 14px;
        margin-bottom: 16px;
        line-height: 1.55;
    }

    .groove-table th,
    .groove-table td {
        padding: 8px 10px;
        font-size: 13px;
    }

    .groove-table th {
        font-size: 11px;
    }

    .groove-table td:first-child {
        font-size: 13px;
    }

    .groove-table td:last-child {
        font-size: 12px;
    }

    .graphite-option {
        margin-bottom: 20px;
    }

    .graphite-option h4 {
        font-size: 15px;
        margin-bottom: 6px;
    }

    .graphite-option p {
        font-size: 13px;
        line-height: 1.55;
    }

    .info-callout {
        padding: 12px 16px;
        margin-top: 6px;
    }

    .info-callout-header {
        gap: 6px;
        margin-bottom: 4px;
    }

    .info-callout-header svg {
        width: 16px;
        height: 16px;
    }

    .info-callout-header span {
        font-size: 12px;
    }

    .info-callout p {
        font-size: 12px;
        line-height: 1.5;
    }

    .custom-option-card {
        padding: 20px;
    }

    .custom-option-card h3 {
        font-size: 17px;
        margin-bottom: 12px;
    }

    .custom-option-card li {
        font-size: 13px;
        margin-bottom: 8px;
        padding-left: 18px;
        line-height: 1.55;
    }

    .custom-option-card li::before {
        font-size: 16px;
    }

    .custom-cta-card {
        padding: 20px;
        gap: 16px;
    }

    .custom-cta-content h3 {
        font-size: 18px;
        margin-bottom: 6px;
    }

    .custom-cta-content p {
        font-size: 14px;
    }

    .btn-request-quote {
        font-size: 14px;
        padding: 12px 24px;
        width: 100%;
        justify-content: center;
    }

    /* FAQs Tab - Small Phone */
    .faq-header {
        margin-bottom: 24px;
    }

    .faq-title {
        font-size: 26px;
        margin-bottom: 10px;
    }

    .faq-title-underline {
        width: 40px;
        height: 2px;
        margin-bottom: 10px;
    }

    .faq-subtitle {
        font-size: 13px;
        line-height: 1.5;
    }

    .faq-list {
        gap: 10px;
    }

    .faq-item {
        border-radius: 6px;
    }

    .faq-question {
        padding: 14px 16px;
        gap: 12px;
    }

    .faq-icon-container {
        width: 36px;
        height: 36px;
        min-width: 36px;
    }

    .faq-type-icon {
        width: 16px;
        height: 16px;
    }

    .faq-question-text {
        font-size: 14px;
        line-height: 1.35;
    }

    .faq-chevron {
        width: 18px;
        height: 18px;
    }

    .faq-answer-content {
        padding: 14px 16px 18px 16px;
        font-size: 13px;
        line-height: 1.6;
        margin: 0 12px;
    }

    .faq-answer-content p {
        margin-bottom: 10px;
    }

    .faq-answer-content ul {
        margin: 10px 0;
        padding-left: 16px;
    }

    .faq-answer-content li {
        margin-bottom: 6px;
        font-size: 13px;
    }
}