/* =============================================
   PRODUCT-PAGE.CSS — Individual Grade Pages
   Industrial-Luxury · Dark-Tech · Dot Rad Plus
   =============================================
   This file is loaded inside /products/*.html pages.
   All paths are relative to / (root).
   ============================================= */

/* ══════════════════════════════════════════════
   PAGE BANNER — Industrial hero with grid
   ══════════════════════════════════════════════ */
.prod-banner {
    padding: calc(var(--header-h) + 56px) 0 64px;
    background:
        linear-gradient(180deg, rgba(9, 12, 19, 0) 0%, rgba(9, 12, 19, 0.6) 100%),
        var(--bg-secondary);
    border-bottom: 1px solid var(--border-subtle);
    position: relative;
    overflow: hidden;
}

.prod-banner::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(245, 184, 0, 0.04) 1px, transparent 1px),
        linear-gradient(90deg, rgba(245, 184, 0, 0.04) 1px, transparent 1px),
        linear-gradient(rgba(255, 255, 255, 0.015) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.015) 1px, transparent 1px);
    background-size: 80px 80px, 80px 80px, 16px 16px, 16px 16px;
    pointer-events: none;
    z-index: 0;
}

.prod-banner__inner {
    position: relative;
    z-index: 1;
}

/* Breadcrumb */
.prod-breadcrumb {
    display: flex;
    align-items: center;
    gap: 8px;
    font-family: var(--font-display);
    font-size: 0.72rem;
    letter-spacing: 0.08em;
    color: var(--text-muted);
    text-transform: uppercase;
    margin-bottom: 24px;
}

.prod-breadcrumb a {
    color: var(--text-secondary);
    transition: color var(--t-fast);
}

.prod-breadcrumb a:hover { color: var(--accent); }

.prod-breadcrumb__sep { color: var(--text-muted); }

/* Eyebrow */
.prod-eyebrow {
    font-family: var(--font-display);
    font-size: 0.72rem;
    font-weight: 700;
    letter-spacing: 0.24em;
    color: var(--accent);
    text-transform: uppercase;
    margin-bottom: 16px;
    display: flex;
    align-items: center;
    gap: 12px;
}

.prod-eyebrow::before {
    content: '';
    display: inline-block;
    width: 36px;
    height: 2px;
    background: var(--accent);
    box-shadow: 0 0 8px rgba(245, 184, 0, 0.4);
    flex-shrink: 0;
}

/* Page Title */
.prod-title {
    font-family: var(--font-display);
    font-size: clamp(2.2rem, 5vw, 3.8rem);
    font-weight: 900;
    color: var(--text-primary);
    line-height: 1.05;
    margin-bottom: 16px;
    text-transform: uppercase;
    letter-spacing: -0.02em;
}

.prod-title .prod-title__code {
    color: var(--accent);
}

/* Subtitle */
.prod-subtitle {
    font-family: var(--font-body);
    font-size: 1rem;
    color: var(--text-secondary);
    max-width: 600px;
    line-height: 1.7;
}

/* ══════════════════════════════════════════════
   PRODUCT HERO — Image + key specs
   ══════════════════════════════════════════════ */
.prod-hero {
    padding: 80px 0;
    position: relative;
    background: var(--bg-primary);
}

.prod-hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background:
        radial-gradient(ellipse 50% 60% at 80% 30%, rgba(245, 184, 0, 0.05) 0%, transparent 70%),
        radial-gradient(ellipse 40% 50% at 20% 80%, rgba(245, 184, 0, 0.04) 0%, transparent 70%);
    pointer-events: none;
}

.prod-hero__grid {
    position: relative;
    z-index: 1;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 64px;
    align-items: center;
}

/* Product image */
.prod-hero__img-wrap {
    position: relative;
    border: 1px solid var(--border-subtle);
    border-radius: 0;
    overflow: hidden;
    background: var(--bg-secondary);
    min-height: 380px;
}

.prod-hero__img-wrap img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    min-height: 380px;
}

/* Dark gradient overlay on image */
.prod-hero__img-wrap::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(
        0deg,
        rgba(9, 12, 19, 0.4) 0%,
        transparent 40%
    );
    pointer-events: none;
}

/* Badge on image */
.prod-hero__badge {
    position: absolute;
    top: 16px;
    left: 16px;
    z-index: 2;
    padding: 6px 14px;
    font-family: var(--font-display);
    font-size: 0.78rem;
    font-weight: 900;
    letter-spacing: 0.12em;
    color: var(--accent);
    background: rgba(9, 12, 19, 0.85);
    border: 1px solid var(--accent-border);
    backdrop-filter: blur(6px);
    -webkit-backdrop-filter: blur(6px);
}

/* Product info */
.prod-hero__info {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.prod-hero__desc {
    font-family: var(--font-body);
    font-size: 0.92rem;
    line-height: 1.85;
    color: var(--text-secondary);
}

/* Specs table */
.prod-specs {
    display: flex;
    flex-direction: column;
    gap: 0;
    border: 1px solid var(--border-subtle);
}

.prod-specs__row {
    display: grid;
    grid-template-columns: 160px 1fr;
    gap: 0;
}

.prod-specs__label {
    padding: 12px 16px;
    font-family: var(--font-display);
    font-size: 0.72rem;
    font-weight: 700;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--accent);
    background: rgba(245, 184, 0, 0.04);
    border-bottom: 1px solid var(--border-subtle);
    border-right: 1px solid var(--border-subtle);
}

.prod-specs__value {
    padding: 12px 16px;
    font-family: var(--font-body);
    font-size: 0.85rem;
    color: var(--text-primary);
    border-bottom: 1px solid var(--border-subtle);
}

/* CTA row */
.prod-hero__actions {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
    margin-top: 8px;
}

.btn-prod {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 12px 24px;
    font-family: var(--font-display);
    font-size: 0.74rem;
    font-weight: 800;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    text-decoration: none;
    border-radius: 0;
    transition: background var(--t-fast), gap var(--t-fast), box-shadow var(--t-fast);
}

.btn-prod--primary {
    color: var(--bg-primary);
    background: var(--accent);
    border: 1px solid var(--accent);
}

.btn-prod--primary:hover {
    gap: 16px;
    box-shadow: 0 0 20px rgba(245, 184, 0, 0.35);
}

.btn-prod--secondary {
    color: var(--accent);
    background: transparent;
    border: 1px solid var(--accent-border);
}

.btn-prod--secondary:hover {
    background: var(--accent-dim);
    gap: 16px;
}

/* ══════════════════════════════════════════════
   FEATURES / APPLICATIONS GRID
   ══════════════════════════════════════════════ */
.prod-section {
    padding: 64px 0;
    position: relative;
}

.prod-section--alt {
    background: var(--bg-secondary);
}

.prod-section__title {
    font-family: var(--font-display);
    font-size: 1.3rem;
    font-weight: 900;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--text-primary);
    margin-bottom: 36px;
    padding-bottom: 16px;
    border-bottom: 2px solid var(--accent);
    display: inline-block;
}

.prod-features {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

.prod-feature {
    padding: 24px 20px;
    border: 1px solid var(--border-subtle);
    border-left: 3px solid var(--accent-border);
    background: var(--bg-panel);
    transition: border-left-color var(--t-fast), background var(--t-fast), transform var(--t-fast);
}

.prod-feature:hover {
    border-left-color: var(--accent);
    background: rgba(245, 184, 0, 0.04);
    transform: translateY(-2px);
}

.prod-feature__icon {
    font-size: 1.4rem;
    margin-bottom: 12px;
    color: var(--accent);
}

.prod-feature__title {
    font-family: var(--font-display);
    font-size: 0.82rem;
    font-weight: 800;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.prod-feature__desc {
    font-family: var(--font-body);
    font-size: 0.8rem;
    line-height: 1.65;
    color: var(--text-secondary);
}

/* ══════════════════════════════════════════════
   OTHER GRADES (cross-sell)
   ══════════════════════════════════════════════ */
.prod-others {
    padding: 64px 0;
    background: var(--bg-primary);
}

.prod-others__grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 14px;
}

.prod-others__card {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    padding: 20px 12px;
    border: 1px solid var(--border-subtle);
    background: var(--bg-panel);
    text-decoration: none;
    text-align: center;
    transition: border-color var(--t-fast), background var(--t-fast), transform var(--t-fast);
}

.prod-others__card:hover {
    border-color: var(--accent-border);
    background: rgba(245, 184, 0, 0.04);
    transform: translateY(-2px);
}

.prod-others__code {
    font-family: var(--font-display);
    font-size: 1.1rem;
    font-weight: 900;
    color: var(--accent);
}

.prod-others__name {
    font-family: var(--font-body);
    font-size: 0.72rem;
    color: var(--text-secondary);
    line-height: 1.3;
}

/* ══════════════════════════════════════════════
   RESPONSIVE
   ══════════════════════════════════════════════ */
@media (max-width: 1024px) {
    .prod-hero__grid { grid-template-columns: 1fr; gap: 40px; }
    .prod-features { grid-template-columns: repeat(2, 1fr); }
    .prod-others__grid { grid-template-columns: repeat(3, 1fr); }
}

@media (max-width: 768px) {
    .prod-banner { padding: calc(var(--header-h) + 40px) 0 48px; }
    .prod-hero { padding: 48px 0; }
    .prod-hero__img-wrap { min-height: 260px; }
    .prod-hero__img-wrap img { min-height: 260px; }
    .prod-features { grid-template-columns: 1fr; }
    .prod-others__grid { grid-template-columns: repeat(2, 1fr); }
    .prod-specs__row { grid-template-columns: 120px 1fr; }
    .prod-specs__label { font-size: 0.66rem; padding: 10px 12px; }
    .prod-specs__value { font-size: 0.8rem; padding: 10px 12px; }
}

@media (max-width: 480px) {
    .prod-others__grid { grid-template-columns: 1fr 1fr; }
    .prod-hero__actions { flex-direction: column; }
    .btn-prod { justify-content: center; }
}