/* ============================================================
   SolidFix — Products Page Styles
   ============================================================ */

/* ===== PAGE HERO ===== */
.page-hero {
    background: linear-gradient(135deg, var(--navy) 0%, #0f2040 60%, var(--navy-light) 100%);
    padding: 140px 0 0;
    position: relative;
    overflow: hidden;
}

.page-hero-bg {
    position: absolute;
    inset: 0;
    background:
        radial-gradient(ellipse 500px 300px at 80% 40%, rgba(0,196,232,0.1) 0%, transparent 70%),
        repeating-linear-gradient(
            45deg, transparent, transparent 40px,
            rgba(255,255,255,0.015) 40px, rgba(255,255,255,0.015) 41px
        );
}

.page-hero-content {
    position: relative;
    z-index: 1;
    padding-bottom: 60px;
}

.breadcrumb {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.8rem;
    color: rgba(255,255,255,0.45);
    margin-bottom: 20px;
}

.breadcrumb a {
    color: rgba(255,255,255,0.55);
    transition: color 0.2s;
}

.breadcrumb a:hover { color: var(--cyan); }
.breadcrumb i { font-size: 0.65rem; }

.page-hero-title {
    font-family: var(--font-en);
    font-size: clamp(2.5rem, 6vw, 4rem);
    font-weight: 900;
    color: var(--white);
    letter-spacing: -0.04em;
    line-height: 1;
    margin-bottom: 16px;
}

.page-hero-desc {
    font-size: 1rem;
    color: rgba(255,255,255,0.6);
    line-height: 1.7;
}

/* Quick Nav */
.product-quick-nav {
    background: rgba(255,255,255,0.05);
    border-top: 1px solid rgba(255,255,255,0.08);
    backdrop-filter: blur(8px);
    position: relative;
    z-index: 2;
}

.quick-nav-links {
    display: flex;
    overflow-x: auto;
}

.quick-nav-link {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 16px 28px;
    font-size: 0.85rem;
    font-weight: 600;
    color: rgba(255,255,255,0.55);
    white-space: nowrap;
    border-bottom: 2px solid transparent;
    transition: all 0.2s;
}

.quick-nav-link:hover,
.quick-nav-link.active {
    color: var(--cyan);
    border-bottom-color: var(--cyan);
    background: rgba(0,196,232,0.05);
}

.quick-nav-link i { font-size: 0.8rem; }

/* ===== PRODUCT SECTION ===== */
.product-section {
    padding: 100px 0;
    background: var(--white);
}

.product-section.alt-bg { background: var(--gray-ultra); }

.product-section-header {
    text-align: center;
    margin-bottom: 48px;
}

.product-section-label {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-family: var(--font-en);
    font-size: 0.72rem;
    font-weight: 600;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--gray-mid);
    margin-bottom: 14px;
}

.label-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
}

.cleanroom-dot { background: var(--blue); }
.vacuum-dot { background: var(--cyan); }
.machine-dot { background: #16a34a; }
.tech-dot { background: var(--accent); }

.product-section-header h2 {
    font-size: clamp(1.6rem, 3.5vw, 2.4rem);
    font-weight: 800;
    color: var(--navy);
    line-height: 1.25;
    margin-bottom: 14px;
}

.product-section-header p {
    font-size: 0.95rem;
    color: var(--gray-mid);
    line-height: 1.8;
    max-width: 600px;
    margin: 0 auto;
}

.light-header h2 { color: var(--white); }

.light-label span { color: rgba(255,255,255,0.5); }

/* Feature Bar */
.product-feature-bar {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    justify-content: center;
    margin-bottom: 60px;
    padding: 20px;
    background: rgba(26,108,181,0.06);
    border-radius: var(--radius-md);
    border: 1px solid rgba(26,108,181,0.12);
}

.vacuum-bar {
    background: rgba(0,196,232,0.06);
    border-color: rgba(0,196,232,0.15);
}

.machine-bar {
    background: rgba(22,163,74,0.05);
    border-color: rgba(22,163,74,0.12);
}

.feature-bar-item {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--navy);
    padding: 6px 14px;
    background: var(--white);
    border-radius: 50px;
    box-shadow: var(--shadow-sm);
}

.feature-bar-item i {
    color: var(--blue);
    font-size: 0.8rem;
}

.vacuum-bar .feature-bar-item i { color: var(--cyan); }
.machine-bar .feature-bar-item i { color: #16a34a; }

/* ===== PRODUCT CATEGORIES ===== */
.product-category {
    margin-bottom: 60px;
}

.category-header {
    margin-bottom: 28px;
    padding-bottom: 18px;
    border-bottom: 2px solid var(--gray-light);
}

.category-header h3 {
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--navy);
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 6px;
}

.category-header h3 i {
    color: var(--blue);
    font-size: 0.95rem;
}

.category-header p {
    font-size: 0.85rem;
    color: var(--gray-mid);
}

/* Product Detail Grid */
.product-detail-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 18px;
    margin-bottom: 20px;
}

.product-detail-grid.three-col {
    grid-template-columns: repeat(3, 1fr);
}

.product-detail-card {
    background: var(--white);
    border-radius: var(--radius-md);
    border: 1px solid var(--gray-light);
    overflow: hidden;
    transition: transform var(--transition), box-shadow var(--transition);
}

.alt-bg .product-detail-card { background: var(--white); }

.product-detail-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}

.pdc-head {
    padding: 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.cleanroom-accent {
    background: linear-gradient(135deg, var(--navy), var(--navy-light));
}

.vacuum-accent {
    background: linear-gradient(135deg, #060d1e, #0d2040);
}

.machine-accent {
    background: linear-gradient(135deg, #1a2a3a, #2d4a30);
}

.pdc-icon {
    width: 44px;
    height: 44px;
    background: rgba(255,255,255,0.1);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--cyan);
    font-size: 1.1rem;
}

.pdc-code {
    font-family: var(--font-en);
    font-size: 0.7rem;
    font-weight: 700;
    color: rgba(255,255,255,0.35);
    letter-spacing: 0.1em;
}

.pdc-body { padding: 20px; }

.pdc-body h4 {
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--navy);
    margin-bottom: 8px;
    line-height: 1.35;
}

.pdc-body h4 small {
    display: block;
    font-family: var(--font-en);
    font-size: 0.72rem;
    font-weight: 500;
    color: var(--gray-mid);
    margin-top: 2px;
}

.pdc-body > p {
    font-size: 0.82rem;
    color: var(--gray-mid);
    line-height: 1.65;
    margin-bottom: 14px;
}

.spec-table {
    width: 100%;
    font-size: 0.78rem;
    margin-bottom: 12px;
    border-collapse: collapse;
}

.spec-table tr { border-bottom: 1px solid var(--gray-light); }
.spec-table tr:last-child { border-bottom: none; }

.spec-table th {
    width: 38%;
    text-align: left;
    padding: 5px 0;
    color: var(--gray-mid);
    font-weight: 600;
}

.spec-table td {
    text-align: right;
    padding: 5px 0;
    color: var(--navy);
    font-weight: 500;
}

.pdc-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 5px;
}

.pdc-tags span {
    font-size: 0.7rem;
    font-weight: 600;
    color: var(--blue);
    background: rgba(26,108,181,0.08);
    padding: 2px 8px;
    border-radius: 4px;
    border: 1px solid rgba(26,108,181,0.15);
}

.vacuum-accent ~ .pdc-body .pdc-tags span {
    color: #00a8cc;
    background: rgba(0,196,232,0.06);
    border-color: rgba(0,196,232,0.15);
}

.machine-accent ~ .pdc-body .pdc-tags span {
    color: #16a34a;
    background: rgba(22,163,74,0.06);
    border-color: rgba(22,163,74,0.15);
}

/* ===== VENTED STRUCTURE EXPLAINER ===== */
.tech-explain-box {
    display: grid;
    grid-template-columns: 280px 1fr;
    gap: 48px;
    background: linear-gradient(135deg, var(--navy) 0%, #0f2040 100%);
    border-radius: var(--radius-lg);
    padding: 48px;
    margin-bottom: 48px;
    align-items: center;
    overflow: hidden;
    position: relative;
}

.tech-explain-box::before {
    content: '';
    position: absolute;
    top: -50px; right: -50px;
    width: 200px; height: 200px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(0,196,232,0.15) 0%, transparent 70%);
}

.tech-explain-visual {
    display: flex;
    justify-content: center;
    align-items: center;
}

.vented-diagram {
    text-align: center;
    position: relative;
}

.vented-bolt {
    display: inline-block;
}

.bolt-head {
    width: 70px;
    height: 22px;
    background: linear-gradient(to bottom, #7a9ac0, #4a7aa0);
    border-radius: 4px;
    margin: 0 auto;
    box-shadow: 0 2px 8px rgba(0,0,0,0.3);
}

.bolt-shaft {
    width: 30px;
    height: 120px;
    background: linear-gradient(to right, #5a8ab0, #4a7aa0, #5a8ab0);
    margin: 0 auto;
    position: relative;
    box-shadow: 2px 0 6px rgba(0,0,0,0.2), -2px 0 6px rgba(0,0,0,0.2);
}

.bolt-hole {
    width: 8px;
    height: 120px;
    background: rgba(0,196,232,0.6);
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    box-shadow: 0 0 12px rgba(0,196,232,0.8);
}

.bolt-thread {
    position: absolute;
    inset: 0;
    background: repeating-linear-gradient(
        90deg,
        transparent,
        transparent 12px,
        rgba(0,0,0,0.15) 12px,
        rgba(0,0,0,0.15) 14px
    );
}

.vented-arrows {
    margin-top: 12px;
}

.gas-arrow {
    font-size: 2rem;
    color: var(--cyan);
    animation: gasFlow 1.5s ease-in-out infinite;
}

.gas-label {
    font-size: 0.75rem;
    color: var(--cyan);
    font-weight: 600;
    letter-spacing: 0.1em;
}

@keyframes gasFlow {
    0%, 100% { transform: translateY(0); opacity: 1; }
    50% { transform: translateY(-6px); opacity: 0.5; }
}

.tech-explain-content h3 {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--white);
    margin-bottom: 18px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.tech-explain-content h3 i { color: var(--cyan); }

.tech-explain-content p {
    font-size: 0.88rem;
    color: rgba(255,255,255,0.65);
    line-height: 1.8;
    margin-bottom: 12px;
}

.vented-specs { margin: 20px 0; }

.spec-row {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 8px;
}

.spec-row span:first-child {
    font-family: var(--font-en);
    font-size: 0.75rem;
    font-weight: 700;
    color: rgba(255,255,255,0.5);
    width: 28px;
}

.spec-bar {
    height: 6px;
    background: linear-gradient(90deg, var(--blue), var(--cyan));
    border-radius: 3px;
    flex: 0 0 auto;
    transition: width 0.8s ease;
}

.spec-row span:last-child {
    font-family: var(--font-en);
    font-size: 0.72rem;
    color: var(--cyan);
    font-weight: 600;
}

.spec-caption {
    font-size: 0.72rem !important;
    color: rgba(255,255,255,0.35) !important;
    margin-top: 4px;
}

/* ===== SPEC TABLE ===== */
.spec-full-table {
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: 40px;
    margin-top: 60px;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--gray-light);
}

.spec-full-table h3 {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--navy);
    margin-bottom: 24px;
    padding-bottom: 16px;
    border-bottom: 2px solid var(--blue);
    display: flex;
    align-items: center;
    gap: 10px;
}

.table-wrap { overflow-x: auto; }

.data-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.88rem;
}

.data-table thead {
    background: var(--navy);
    color: var(--white);
}

.data-table th {
    padding: 13px 16px;
    text-align: left;
    font-weight: 600;
    font-size: 0.82rem;
}

.data-table td {
    padding: 11px 16px;
    border-bottom: 1px solid var(--gray-light);
    color: var(--gray-dark);
}

.data-table tbody tr:hover { background: rgba(26,108,181,0.04); }

.data-table td:first-child {
    font-family: var(--font-en);
    font-weight: 700;
    color: var(--blue);
}

/* ===== TECH DARK SECTION ===== */
.tech-dark-section {
    background: linear-gradient(135deg, var(--navy) 0%, #0f2040 100%) !important;
}

.tech-materials-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 28px;
    margin-bottom: 60px;
}

.material-tech-card {
    background: rgba(255,255,255,0.04);
    border: 1px solid rgba(255,255,255,0.08);
    border-radius: var(--radius-lg);
    padding: 36px;
}

.material-tech-card h3 {
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--white);
    margin-bottom: 24px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.material-tech-card h3 i { color: var(--cyan); }

/* Material Compare Table */
.material-compare { font-size: 0.82rem; }

.material-row {
    display: grid;
    grid-template-columns: 1fr 1fr 90px 1fr;
    gap: 12px;
    padding: 12px 0;
    border-bottom: 1px solid rgba(255,255,255,0.06);
    align-items: center;
}

.material-row.header-row {
    font-size: 0.72rem;
    color: rgba(255,255,255,0.35);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.08em;
}

.material-row strong {
    font-family: var(--font-en);
    font-weight: 700;
    color: var(--white);
    font-size: 0.85rem;
}

.material-row .rating { color: var(--accent); }

.material-row span:not(.rating):not(.mag) {
    color: rgba(255,255,255,0.55);
    font-size: 0.78rem;
}

.mag {
    display: inline-block;
    font-size: 0.72rem;
    font-weight: 700;
    padding: 2px 8px;
    border-radius: 4px;
    text-align: center;
}

.magnetic { background: rgba(220,38,38,0.15); color: #f87171; }
.non-magnetic { background: rgba(22,163,74,0.15); color: #4ade80; }

/* Surface List */
.surface-list { list-style: none; }

.surface-list li {
    display: flex;
    gap: 14px;
    padding: 14px 0;
    border-bottom: 1px solid rgba(255,255,255,0.06);
}

.surface-list li:last-child { border-bottom: none; }

.surface-dot {
    width: 14px;
    height: 14px;
    border-radius: 50%;
    flex-shrink: 0;
    margin-top: 3px;
}

.ep-dot { background: linear-gradient(135deg, var(--blue), var(--cyan)); }
.uni-dot { background: #c0a060; }
.nickel-dot { background: linear-gradient(135deg, #c0c0c0, #e0e0e0); }
.zinc-dot { background: #6b9060; }
.bare-dot { background: #8a9fb5; }

.surface-list li strong {
    display: block;
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--white);
    margin-bottom: 4px;
}

.surface-list li p {
    font-size: 0.78rem;
    color: rgba(255,255,255,0.45);
    line-height: 1.6;
}

/* Download Section */
.download-section {
    background: rgba(255,255,255,0.04);
    border: 1px solid rgba(255,255,255,0.08);
    border-radius: var(--radius-lg);
    padding: 40px;
}

.download-section h3 {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--white);
    margin-bottom: 8px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.download-section h3 i { color: var(--cyan); }

.download-section > p {
    font-size: 0.85rem;
    color: rgba(255,255,255,0.45);
    margin-bottom: 28px;
}

.download-grid {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.download-card {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 16px 20px;
    background: rgba(255,255,255,0.04);
    border: 1px solid rgba(255,255,255,0.07);
    border-radius: var(--radius-md);
    transition: background var(--transition);
}

.download-card:hover { background: rgba(255,255,255,0.07); }

.download-icon {
    font-size: 1.8rem;
    color: #e74c4c;
    flex-shrink: 0;
}

.download-info {
    flex: 1;
}

.download-info strong {
    display: block;
    font-size: 0.88rem;
    font-weight: 700;
    color: var(--white);
    margin-bottom: 2px;
}

.download-info span {
    font-size: 0.75rem;
    color: rgba(255,255,255,0.4);
}

.download-btn {
    display: flex;
    align-items: center;
    gap: 6px;
    background: var(--blue);
    color: var(--white);
    padding: 8px 16px;
    border-radius: var(--radius-sm);
    font-size: 0.8rem;
    font-weight: 600;
    transition: background var(--transition);
    white-space: nowrap;
}

.download-btn:hover { background: var(--blue-bright); }

/* ===== CTA Banner ===== */
.product-cta-banner {
    background: linear-gradient(90deg, var(--blue) 0%, var(--navy-light) 100%);
    padding: 80px 0;
    text-align: center;
}

.product-cta-banner h2 {
    font-size: clamp(1.4rem, 3vw, 2rem);
    font-weight: 800;
    color: var(--white);
    margin-bottom: 12px;
}

.product-cta-banner p {
    font-size: 0.95rem;
    color: rgba(255,255,255,0.7);
    margin-bottom: 32px;
}

/* ===== RESPONSIVE ===== */
@media (max-width: 1100px) {
    .product-detail-grid { grid-template-columns: repeat(2, 1fr); }
    .tech-materials-grid { grid-template-columns: 1fr; }
    .tech-explain-box { grid-template-columns: 1fr; text-align: center; }
    .tech-explain-visual { margin-bottom: 32px; }
}

@media (max-width: 700px) {
    .product-detail-grid { grid-template-columns: 1fr; }
    .product-detail-grid.three-col { grid-template-columns: 1fr; }
    .tech-explain-box { padding: 28px 20px; }
    .spec-full-table { padding: 24px 16px; }
    .download-card { flex-direction: column; align-items: flex-start; }
    .material-row { grid-template-columns: 1fr 1fr; gap: 8px; }
    .material-row .rating,
    .material-row span:last-child { display: none; }
}