/* ── css/product-detail.css ─────────────────────── */

/* ═══════════════════════════════════════
   HERO SECTION
═══════════════════════════════════════ */
.pd-hero {
    min-height: 80svh;
    display: grid;
    grid-template-columns: 1fr 1fr;
    position: relative;
    overflow: hidden;
    background: var(--c-black);
}

.pd-hero-content {
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: 100px var(--section-h) 80px;
    position: relative;
    z-index: 1;
}

.pd-hero-back {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-family: var(--font-body);
    font-size: 9px;
    letter-spacing: 3px;
    text-transform: uppercase;
    color: rgba(246,243,238,0.40);
    text-decoration: none;
    margin-bottom: 40px;
    transition: color 0.2s;
}
.pd-hero-back::before {
    content: '←';
    font-size: 14px;
    transition: transform 0.25s;
}
.pd-hero-back:hover { color: rgba(246,243,238,0.85); }
.pd-hero-back:hover::before { transform: translateX(-4px); }

.pd-hero-num {
    font-family: var(--font-display);
    font-size: 10px;
    letter-spacing: 5px;
    color: rgba(246,243,238,0.38);
    text-transform: uppercase;
    margin-bottom: 18px;
    opacity: 0;
    animation: anim-fade-up 0.9s var(--ease-sharp) 0.1s forwards;
}

.pd-hero-title {
    font-family: var(--font-display);
    font-size: clamp(42px, 5.5vw, 78px);
    font-weight: 300;
    line-height: 1.0;
    letter-spacing: -1.5px;
    color: var(--c-white);
    margin-bottom: 28px;
    opacity: 0;
    animation: anim-fade-up 0.9s var(--ease-sharp) 0.2s forwards;
}
.pd-hero-title strong { font-weight: 700; display: block; }
.pd-hero-title em { font-style: italic; color: var(--c-white); }

.pd-hero-desc {
    font-family: var(--font-body);
    font-size: 13px;
    line-height: 1.9;
    color: rgba(246,243,238,0.50);
    max-width: 420px;
    margin-bottom: 40px;
    opacity: 0;
    animation: anim-fade-up 0.9s var(--ease-sharp) 0.32s forwards;
}

.pd-hero-badges {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 40px;
    opacity: 0;
    animation: anim-fade-up 0.9s var(--ease-sharp) 0.44s forwards;
}
.pd-badge {
    font-family: var(--font-body);
    font-size: 9px;
    letter-spacing: 2.5px;
    font-weight: 600;
    text-transform: uppercase;
    color: rgba(246,243,238,0.6);
    border: 1px solid rgba(246,243,238,0.12);
    padding: 6px 14px;
    border-radius: 100px;
}

.pd-hero-cta {
    opacity: 0;
    animation: anim-fade-up 0.9s var(--ease-sharp) 0.52s forwards;
}

.pd-hero-visual {
    position: relative;
    overflow: hidden;
    background: var(--c-dark1);
}
.pd-hero-visual img {
    width: 100%; height: 100%;
    object-fit: cover;
    object-position: center;
    display: block;
    opacity: 0;
    animation: anim-fade-in 1.2s var(--ease-std) 0.15s forwards;
    transition: transform 0.8s var(--ease-std);
}
.pd-hero-visual:hover img { transform: scale(1.03); }

/* Diagonal divider line between columns */
.pd-hero-visual::before {
    content: '';
    position: absolute;
    top: 0; left: 0; bottom: 0;
    width: 1px;
    background: linear-gradient(to bottom, transparent 5%, rgba(255,255,255,0.06) 40%, rgba(255,255,255,0.06) 60%, transparent 95%);
    z-index: 2;
}

/* Glow on right panel */
.pd-hero::after {
    content: '';
    position: absolute;
    top: 20%; right: 0;
    width: 50%; height: 60%;
    background: radial-gradient(ellipse 70% 70% at 70% 50%, rgba(123,0,34,0.07) 0%, transparent 70%);
    pointer-events: none;
    z-index: 0;
}

/* ═══════════════════════════════════════
   SPECS BAND
═══════════════════════════════════════ */
.pd-specs-band {
    background: var(--c-dark2);
    border-top: 1px solid var(--c-border-dark);
    border-bottom: 1px solid var(--c-border-dark);
    padding: 52px var(--section-h);
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 0;
}
.pd-spec-item {
    padding: 0 32px;
    border-right: 1px solid var(--c-border-dark);
}
.pd-spec-item:first-child { padding-left: 0; }
.pd-spec-item:last-child { border-right: none; }

.pd-spec-value {
    font-family: var(--font-display);
    font-size: clamp(28px, 3.5vw, 44px);
    font-weight: 300;
    letter-spacing: -1px;
    color: var(--c-white);
    line-height: 1;
    margin-bottom: 8px;
}
.pd-spec-value em { font-style: italic; color: var(--c-white); }
.pd-spec-label {
    font-family: var(--font-body);
    font-size: 9px;
    letter-spacing: 3px;
    text-transform: uppercase;
    color: rgba(246,243,238,0.32);
    font-weight: 600;
}

/* ═══════════════════════════════════════
   FEATURES SECTION (dark)
═══════════════════════════════════════ */
.pd-features {
    background: var(--c-black);
    padding: 100px var(--section-h);
}
.pd-section-label {
    font-family: var(--font-body);
    font-size: 9px;
    letter-spacing: 4px;
    text-transform: uppercase;
    color: rgba(246,243,238,0.38);
    font-weight: 600;
    margin-bottom: 16px;
}
.pd-section-title {
    font-family: var(--font-display);
    font-size: clamp(32px, 4vw, 52px);
    font-weight: 300;
    letter-spacing: -1px;
    color: var(--c-white);
    margin-bottom: 56px;
    max-width: 600px;
    line-height: 1.1;
}
.pd-section-title strong { font-weight: 700; }

.pd-features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2px;
}
.pd-feature-card {
    background: var(--c-dark1);
    border: 1px solid var(--c-border-dark);
    padding: 36px 32px;
    transition: background 0.25s, border-color 0.25s;
}
.pd-feature-card:hover {
    background: var(--c-dark2);
    border-color: rgba(255,255,255,0.12);
}
.pd-feature-icon {
    width: 38px; height: 38px;
    margin-bottom: 22px;
    color: rgba(246,243,238,0.50);
}
.pd-feature-icon svg { width: 100%; height: 100%; }
.pd-feature-name {
    font-family: var(--font-body);
    font-size: 11px;
    letter-spacing: 2px;
    text-transform: uppercase;
    font-weight: 700;
    color: var(--c-white);
    margin-bottom: 12px;
}
.pd-feature-text {
    font-family: var(--font-body);
    font-size: 13px;
    line-height: 1.8;
    color: rgba(246,243,238,0.42);
}

/* ═══════════════════════════════════════
   USE AREAS (light)
═══════════════════════════════════════ */
.pd-uses {
    background: var(--c-white);
    padding: 100px var(--section-h);
}
.pd-uses .pd-section-label { color: var(--c-bordo); opacity: 0.85; }
.pd-uses .pd-section-title { color: var(--c-black); }

.pd-uses-list {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2px;
}
.pd-use-item {
    background: rgba(6,6,6,0.03);
    border: 1px solid rgba(6,6,6,0.07);
    padding: 28px 32px;
    display: flex;
    align-items: flex-start;
    gap: 18px;
    transition: background 0.2s;
}
.pd-use-item:hover { background: rgba(6,6,6,0.06); }

.pd-use-num {
    font-family: var(--font-display);
    font-size: 24px;
    font-weight: 300;
    color: rgba(6,6,6,0.12);
    line-height: 1;
    flex-shrink: 0;
    min-width: 28px;
    margin-top: 2px;
}
.pd-use-body {}
.pd-use-name {
    font-family: var(--font-body);
    font-size: 11px;
    font-weight: 700;
    letter-spacing: 1.5px;
    text-transform: uppercase;
    color: var(--c-black);
    margin-bottom: 6px;
}
.pd-use-desc {
    font-family: var(--font-body);
    font-size: 12.5px;
    line-height: 1.75;
    color: rgba(6,6,6,0.52);
}

/* ═══════════════════════════════════════
   ADVANTAGES (dark)
═══════════════════════════════════════ */
.pd-advantages {
    background: var(--c-dark1);
    padding: 100px var(--section-h);
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: start;
}
.pd-advantages-left {}
.pd-advantages-list {
    display: flex;
    flex-direction: column;
    gap: 0;
    list-style: none;
    margin: 0;
    padding: 0;
}
.pd-adv-item {
    display: flex;
    align-items: flex-start;
    gap: 20px;
    padding: 24px 0;
    border-bottom: 1px solid var(--c-border-dark);
    transition: padding-left 0.3s var(--ease-std);
    cursor: default;
}
.pd-adv-item:first-child { padding-top: 0; }
.pd-adv-item:last-child { border-bottom: none; }
.pd-adv-item:hover { padding-left: 8px; }

.pd-adv-dot {
    width: 6px; height: 6px;
    border-radius: 50%;
    background: rgba(246,243,238,0.28);
    flex-shrink: 0;
    margin-top: 6px;
}
.pd-adv-text {
    font-family: var(--font-display);
    font-size: clamp(17px, 2vw, 22px);
    font-weight: 300;
    color: rgba(246,243,238,0.82);
    line-height: 1.4;
}
.pd-adv-text em { font-style: italic; color: var(--c-white); }

.pd-advantages-visual {
    position: sticky;
    top: 120px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    grid-template-rows: 1fr 1fr;
    gap: 4px;
    border-radius: 2px;
    overflow: hidden;
    aspect-ratio: 1 / 1;
}
.pd-adv-img {
    overflow: hidden;
    background: var(--c-dark2);
}
.pd-adv-img:first-child {
    grid-column: 1 / -1;
}
.pd-adv-img img {
    width: 100%; height: 100%;
    object-fit: cover;
    display: block;
    transition: transform 0.6s var(--ease-std);
}
.pd-adv-img:hover img { transform: scale(1.06); }
.pd-adv-img-placeholder {
    width: 100%; height: 100%;
    min-height: 160px;
    background: var(--c-dark3);
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-body);
    font-size: 9px;
    letter-spacing: 3px;
    color: rgba(246,243,238,0.15);
    text-transform: uppercase;
}

/* ═══════════════════════════════════════
   GALLERY (light)
═══════════════════════════════════════ */
.pd-gallery {
    background: var(--c-white2);
    padding: 80px var(--section-h);
}
.pd-gallery .pd-section-label { color: var(--c-bordo); }
.pd-gallery .pd-section-title { color: var(--c-black); margin-bottom: 36px; }

.pd-gallery-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 4px;
}
.pd-gallery-item {
    overflow: hidden;
    aspect-ratio: 4 / 3;
    background: rgba(6,6,6,0.06);
}
.pd-gallery-item:first-child {
    grid-column: span 2;
    aspect-ratio: 16 / 9;
}
.pd-gallery-item img {
    width: 100%; height: 100%;
    object-fit: cover;
    display: block;
    transition: transform 0.6s var(--ease-std);
}
.pd-gallery-item:hover img { transform: scale(1.05); }
.pd-gallery-placeholder {
    width: 100%; height: 100%;
    min-height: 200px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-body);
    font-size: 9px;
    letter-spacing: 3px;
    color: rgba(6,6,6,0.22);
    text-transform: uppercase;
}

/* ═══════════════════════════════════════
   BREAK IMAGE (full-bleed interstitial)
═══════════════════════════════════════ */
.pd-break-image {
    width: 100%;
    height: 28vh !important;
    min-height: 180px !important;
    max-height: 360px !important;
    overflow: hidden !important;
    position: relative;
    background: var(--c-dark1);
}
.pd-break-image img {
    width: 100%; height: 100%;
    object-fit: cover;
    object-position: bottom;
    display: block;
    opacity: 0.82;
    transition: transform 10s linear;
}
.pd-break-image:hover img { transform: scale(1.04); }
.pd-break-image::after {
    content: '';
    position: absolute; inset: 0;
    background: linear-gradient(to bottom, rgba(6,6,6,0.22) 0%, transparent 35%, transparent 65%, rgba(6,6,6,0.28) 100%);
    pointer-events: none;
}
.pd-break-image-caption {
    position: absolute;
    bottom: 22px; right: var(--section-h);
    font-family: var(--font-body);
    font-size: 9px; letter-spacing: 3px;
    text-transform: uppercase;
    color: rgba(246,243,238,0.28);
    z-index: 1;
}

/* ═══════════════════════════════════════
   SPLIT SECTION (50/50 text + image)
═══════════════════════════════════════ */
.pd-split {
    display: grid;
    grid-template-columns: 1fr 1fr;
    min-height: 580px;
    position: relative;
}
.pd-split-content {
    padding: 80px var(--section-h) 80px 80px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    background: var(--c-black);
}
.pd-split-content .pd-section-title { margin-bottom: 32px; }
.pd-split-content.light {
    background: var(--c-white);
}
.pd-split-content.light .pd-section-label { color: var(--c-bordo); }
.pd-split-content.light .pd-section-title { color: var(--c-black); }
.pd-split-content.light .pd-adv-text { color: rgba(6,6,6,0.68); }
.pd-split-content.light .pd-adv-text em { color: var(--c-black); }
.pd-split-content.light .pd-adv-dot { background: rgba(6,6,6,0.22); }
.pd-split-content.light .pd-adv-item { border-color: rgba(6,6,6,0.09); }
.pd-split-img {
    overflow: hidden;
    background: var(--c-dark2);
    position: relative;
    min-height: 480px;
}
.pd-split-img img {
    position: absolute;
    inset: 0;
    width: 100%; height: 100%;
    object-fit: cover;
    display: block;
    transition: transform 0.8s var(--ease-std);
}
.pd-split-img:hover img { transform: scale(1.04); }
.pd-split.reverse .pd-split-img { order: -1; }

/* ═══════════════════════════════════════
   PULSE MODES SECTION
═══════════════════════════════════════ */
.pd-modes {
    background: var(--c-dark1);
    padding: 100px var(--section-h);
    border-top: 1px solid var(--c-border-dark);
    border-bottom: 1px solid var(--c-border-dark);
}
.pd-modes-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 2px;
    margin-top: 52px;
}
.pd-mode-card {
    background: var(--c-dark2);
    border: 1px solid var(--c-border-dark);
    padding: 28px 20px 24px;
    transition: background 0.22s, border-color 0.22s;
}
.pd-mode-card:hover {
    background: var(--c-dark3);
    border-color: rgba(255,255,255,0.11);
}
.pd-mode-name {
    font-family: var(--font-display);
    font-size: 22px;
    font-weight: 600;
    color: var(--c-white);
    letter-spacing: -0.3px;
    line-height: 1;
    margin-bottom: 5px;
}
.pd-mode-sublabel {
    font-family: var(--font-body);
    font-size: 8px;
    letter-spacing: 2.5px;
    text-transform: uppercase;
    color: rgba(246,243,238,0.26);
    font-weight: 600;
    margin-bottom: 20px;
}
.pd-mode-row {
    display: flex;
    flex-direction: column;
    gap: 2px;
    padding-top: 10px;
    border-top: 1px solid var(--c-border-dark);
}
.pd-mode-row + .pd-mode-row { margin-top: 6px; }
.pd-mode-row-key {
    font-family: var(--font-body);
    font-size: 8px;
    letter-spacing: 2px;
    text-transform: uppercase;
    color: rgba(246,243,238,0.22);
    font-weight: 600;
}
.pd-mode-row-val {
    font-family: var(--font-display);
    font-size: 15px;
    font-weight: 300;
    color: rgba(246,243,238,0.70);
    letter-spacing: -0.2px;
}

/* ═══════════════════════════════════════
   CTA BAND
═══════════════════════════════════════ */
.pd-cta-band {
    background: var(--c-black);
    padding: 100px var(--section-h);
    text-align: center;
    position: relative;
    overflow: hidden;
}
.pd-cta-band::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse 70% 70% at 50% 50%, rgba(192,0,58,0.08) 0%, transparent 70%);
    pointer-events: none;
}
.pd-cta-label {
    font-family: var(--font-body);
    font-size: 9px;
    letter-spacing: 4px;
    text-transform: uppercase;
    font-weight: 600;
    color: rgba(246,243,238,0.38);
    margin-bottom: 18px;
}
.pd-cta-title {
    font-family: var(--font-display);
    font-size: clamp(36px, 5vw, 66px);
    font-weight: 300;
    letter-spacing: -1.5px;
    color: var(--c-white);
    margin-bottom: 36px;
    line-height: 1.05;
}
.pd-cta-title em { font-style: italic; color: var(--c-white); }
.pd-cta-buttons {
    display: flex;
    gap: 14px;
    justify-content: center;
    flex-wrap: wrap;
    position: relative;
    z-index: 1;
}

/* ═══════════════════════════════════════
   RESPONSIVE
═══════════════════════════════════════ */
@media (max-width: 1100px) {
    .pd-advantages { grid-template-columns: 1fr; gap: 52px; }
    .pd-advantages-visual { position: static; aspect-ratio: 16/9; }
    .pd-adv-img:first-child { grid-column: 1 / -1; }
    .pd-modes-grid { grid-template-columns: repeat(3, 1fr); }
}
@media (max-width: 900px) {
    .pd-hero { grid-template-columns: 1fr; min-height: auto; }
    .pd-hero-visual { min-height: 320px; }
    .pd-specs-band { grid-template-columns: repeat(2, 1fr); gap: 24px; padding: 40px var(--section-h); }
    .pd-spec-item { border-right: none; padding: 0; }
    .pd-features-grid { grid-template-columns: 1fr 1fr; }
    .pd-gallery-grid { grid-template-columns: 1fr 1fr; }
    .pd-gallery-item:first-child { grid-column: 1 / -1; }
    .pd-split { grid-template-columns: 1fr; }
    .pd-split-img { min-height: 320px; }
    .pd-split.reverse .pd-split-img { order: 0; }
    .pd-split-content { padding: 60px 36px; }
    .pd-break-image { height: 44vh; }
    .pd-modes-grid { grid-template-columns: repeat(2, 1fr); }
    .pd-modes { padding: 64px var(--section-h); }
}
@media (max-width: 600px) {
    .pd-hero-content { padding: 80px 24px 60px; }
    .pd-hero-title   { font-size: clamp(36px, 10vw, 52px); letter-spacing: -1px; }
    .pd-hero-desc    { font-size: 13px; }
    .pd-hero-badges  { gap: 6px; }
    .pd-badge        { font-size: 8px; letter-spacing: 1.5px; padding: 5px 10px; }

    .pd-specs-band { grid-template-columns: 1fr 1fr; padding: 32px 24px; }
    .pd-spec-value { font-size: clamp(22px, 7vw, 34px); }

    .pd-features { padding: 64px 24px; }
    .pd-features-grid { grid-template-columns: 1fr; }
    .pd-feature-card  { padding: 28px 20px; }

    .pd-uses { padding: 64px 24px; }
    .pd-uses-list { grid-template-columns: 1fr; }

    .pd-advantages { padding: 64px 24px; }

    .pd-modes { padding: 56px 24px; }
    .pd-modes-grid { grid-template-columns: 1fr 1fr; }

    .pd-split-content { padding: 48px 24px; }
    .pd-split-img { min-height: 260px; }
    .pd-section-title { font-size: clamp(28px, 8vw, 42px); margin-bottom: 32px; }

    .pd-gallery { padding: 64px 24px; }
    .pd-gallery-grid { grid-template-columns: 1fr; }
    .pd-gallery-item:first-child { aspect-ratio: 4/3; }

    .pd-cta-band { padding: 72px 24px; }
    .pd-cta-buttons { flex-direction: column; align-items: center; }
    .pd-cta-buttons .btn { width: 100%; max-width: 320px; justify-content: center; }
}