/* ==========================================================
   Case Study Detail — V4
   EcoHairFactory design system:
   Forest Green #4A7C59 / Wood #C8A882 / Cream #FAF8F5 /
   Charcoal #2C2C2C / CTA #D4874D
   Playfair Display + Lora

   V4: Right sticky sidebar replaces horizontal TOC
   ========================================================== */


/* ==================== HERO ==================== */

.csd-hero {
    padding: 64px 0 0;
    background: var(--color-cream);
    border-bottom: none !important;
}

.csd-hero__inner {
    display: grid;
    grid-template-columns: 1fr 380px;
    gap: 48px;
    align-items: center;
}

.csd-hero__badges {
    display: flex;
    gap: 8px;
    margin-bottom: 20px;
    flex-wrap: wrap;
}

.csd-badge {
    font-family: var(--font-body);
    font-size: 0.7rem;
    font-weight: 600;
    padding: 5px 14px;
    border-radius: 20px;
    letter-spacing: 0.06em;
    text-transform: uppercase;
}

.csd-badge--type {
    background: var(--color-primary);
    color: var(--color-white);
}

.csd-badge--country {
    background: transparent;
    color: var(--color-text-light);
    border: 1px solid var(--color-border);
}

.csd-hero__top h1 {
    font-size: clamp(1.6rem, 3vw, 2.2rem);
    line-height: 1.25;
    margin-bottom: 14px;
    letter-spacing: -0.01em;
    color: var(--color-charcoal);
}

.csd-hero__summary {
    font-size: 1rem;
    color: var(--color-text-light);
    line-height: 1.7;
    margin-bottom: 20px;
}

.csd-hero__tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.csd-concern-tag {
    font-family: var(--font-body);
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--color-primary-dark);
    background: rgba(74, 124, 89, 0.08);
    padding: 4px 12px;
    border-radius: 4px;
    letter-spacing: 0.02em;
}

.csd-hero__image {
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow-md);
}

.csd-hero__image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}


/* ==================== DATA STRIP ==================== */

.csd-datastrip {
    margin-top: 40px;
    padding-bottom: 32px;
    border-bottom: 1px solid var(--color-border);
}

.csd-datastrip__cards {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
    margin-bottom: 20px;
}

.csd-datastrip__card {
    background: var(--color-white);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 18px 20px;
    text-align: center;
    border-top: 3px solid var(--color-primary);
}

.csd-datastrip__card-num {
    font-family: var(--font-heading);
    font-size: 1.6rem;
    font-weight: 600;
    color: var(--color-charcoal);
    line-height: 1.2;
}

.csd-datastrip__card-label {
    font-family: var(--font-body);
    font-size: 0.78rem;
    color: var(--color-text-light);
    margin-top: 4px;
}

.csd-datastrip__tags {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 8px;
}

.csd-datastrip__tag {
    display: inline-flex;
    align-items: baseline;
    gap: 5px;
    font-family: var(--font-body);
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--color-charcoal);
    padding: 6px 14px;
    border-radius: 20px;
    border: 1px solid var(--color-border);
    background: var(--color-white);
}

.csd-datastrip__tag-label {
    font-size: 0.6rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--color-text-light);
}


/* ==================== TWO-COLUMN LAYOUT ==================== */

.csd-layout {
    display: grid;
    grid-template-columns: 1fr 220px;
    gap: 56px;
    padding: 48px 0 64px;
}

.csd-body {
    min-width: 0;
}


/* ==================== SIDEBAR ==================== */

.csd-sidebar__inner {
    position: sticky;
    top: calc(var(--header-height, 72px) + 24px);
    display: flex;
    flex-direction: column;
    gap: 24px;
}

/* Quick Facts card */
.csd-sidebar__card {
    background: var(--color-white);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 20px;
}

.csd-sidebar__card-title {
    font-family: var(--font-body);
    font-size: 0.7rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--color-text-light);
    margin-bottom: 14px;
    padding-bottom: 10px;
    border-bottom: 1px solid var(--color-border);
}

.csd-sidebar__facts {
    margin: 0;
}

.csd-sidebar__fact {
    display: flex;
    flex-direction: column;
    padding: 8px 0;
    border-bottom: 1px solid rgba(229, 224, 216, 0.5);
}

.csd-sidebar__fact:last-child {
    border-bottom: none;
    padding-bottom: 0;
}

.csd-sidebar__fact dt {
    font-family: var(--font-body);
    font-size: 0.65rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--color-text-light);
    margin-bottom: 2px;
}

.csd-sidebar__fact dd {
    font-family: var(--font-body);
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--color-charcoal);
    margin: 0;
    line-height: 1.4;
}

/* TOC navigation */
.csd-sidebar__nav {
    display: flex;
    flex-direction: column;
    gap: 0;
}

.csd-sidebar__nav-link {
    font-family: var(--font-body);
    font-size: 0.82rem;
    font-weight: 500;
    color: var(--color-text-light);
    text-decoration: none;
    padding: 8px 14px;
    border-left: 2px solid transparent;
    transition: color 0.2s, border-color 0.2s, background 0.2s;
}

.csd-sidebar__nav-link:hover {
    color: var(--color-charcoal);
    background: rgba(74, 124, 89, 0.04);
}

.csd-sidebar__nav-link--active {
    color: var(--color-primary);
    border-left-color: var(--color-primary);
    font-weight: 600;
}

/* Sidebar CTA */
.csd-sidebar__cta {
    background: rgba(74, 124, 89, 0.06);
    border: 1px solid rgba(74, 124, 89, 0.15);
    border-radius: var(--radius);
    padding: 20px;
    text-align: center;
}

.csd-sidebar__cta p {
    font-family: var(--font-body);
    font-size: 0.85rem;
    color: var(--color-charcoal);
    margin: 0 0 12px;
    font-weight: 500;
}


/* ==================== SECTIONS ==================== */

.csd-section {
    margin-bottom: 40px;
    padding-bottom: 40px;
    border-bottom: 1px solid var(--color-border);
    scroll-margin-top: calc(var(--header-height, 72px) + 24px);
}

.csd-section:last-of-type {
    border-bottom: none;
}

.csd-section__label {
    font-family: var(--font-body);
    font-size: 0.7rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    color: var(--color-primary);
    margin-bottom: 8px;
}

.csd-section h2 {
    font-family: var(--font-heading);
    font-size: 1.6rem;
    color: var(--color-charcoal);
    margin-bottom: 24px;
    letter-spacing: -0.01em;
    line-height: 1.3;
}


/* ==================== BLOCKS (Story + Challenge) ==================== */

.csd-block {
    margin-bottom: 32px;
}

.csd-block:last-child {
    margin-bottom: 0;
}

.csd-prose p {
    font-size: 1.02rem;
    color: var(--color-text);
    line-height: 1.8;
    margin-bottom: 12px;
}

.csd-prose p:last-child {
    margin-bottom: 0;
}

.csd-block--challenge {
    padding-left: 24px;
    border-left: 3px solid var(--color-primary);
}

.csd-prose--emphasis p {
    font-size: 1.05rem;
    color: var(--color-charcoal);
    font-weight: 500;
}


/* ==================== EVIDENCE IMAGES ==================== */

.csd-evidence {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    align-items: start;
    gap: 16px;
    margin-top: 28px;
}

.csd-evidence__item {
    margin: 0;
    border-radius: var(--radius);
    overflow: hidden;
    background: var(--color-white);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--color-border);
    transition: box-shadow var(--transition);
}

.csd-evidence__item:hover {
    box-shadow: var(--shadow-md);
}

.csd-evidence__item:only-child {
    grid-column: span 2;
    max-width: 520px;
    margin: 0 auto;
}

.csd-evidence__item a {
    display: block;
    line-height: 0;
    position: relative;
}

.csd-evidence__type {
    position: absolute;
    top: 10px;
    left: 10px;
    background: rgba(44, 44, 44, 0.72);
    color: var(--color-white);
    font-family: var(--font-body);
    font-size: 0.65rem;
    line-height: 1.4;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    padding: 3px 10px;
    border-radius: 4px;
    backdrop-filter: blur(2px);
}

.csd-evidence__item img {
    width: 100%;
    height: auto;
    aspect-ratio: 4 / 3;
    object-fit: contain;
    background: var(--color-cream-dark);
    transition: transform 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

.csd-evidence__item:hover img {
    transform: scale(1.03);
}

/* Portrait images (e.g. chat/email screenshots) — show in full, never crop */
.csd-evidence__item--portrait img {
    width: auto;
    max-width: 100%;
    aspect-ratio: auto;
    height: auto;
    max-height: 520px;
    object-fit: contain;
    margin: 0 auto;
    background: var(--color-cream-dark);
}

.csd-evidence__item--portrait:hover img {
    transform: none;
}

.csd-evidence__item figcaption {
    padding: 10px 14px;
    font-size: 0.8rem;
    color: var(--color-text-light);
    line-height: 1.4;
    font-style: italic;
    border-top: 1px solid var(--color-border);
}

.csd-evidence--legacy {
    grid-template-columns: repeat(3, 1fr);
}

.csd-evidence--legacy .csd-evidence__item:first-child {
    grid-column: span 3;
    max-width: none;
}


/* ==================== CHECKLIST (Solution) ==================== */

.csd-checklist {
    list-style: none;
    padding: 0;
    margin: 0 0 28px;
}

.csd-checklist li {
    display: flex;
    align-items: flex-start;
    gap: 14px;
    padding: 12px 0;
    border-bottom: 1px solid rgba(229, 224, 216, 0.6);
    font-size: 1rem;
    line-height: 1.6;
    color: var(--color-text);
}

.csd-checklist li:first-child {
    padding-top: 0;
}

.csd-checklist li:last-child {
    border-bottom: none;
}

.csd-check-icon {
    flex-shrink: 0;
    margin-top: 3px;
    color: var(--color-primary);
}

.csd-checklist li span {
    flex: 1;
}


/* ==================== CUSTOMIZATION TAGS ==================== */

.csd-custom-block {
    margin-top: 28px;
    padding-top: 20px;
    border-top: 1px solid var(--color-border);
}

.csd-custom-block h3 {
    font-family: var(--font-body);
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--color-text-light);
    text-transform: uppercase;
    letter-spacing: 0.06em;
    margin-bottom: 14px;
}

.csd-custom-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.csd-custom-tag {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--color-charcoal);
    background: var(--color-white);
    padding: 8px 16px;
    border-radius: 20px;
    border: 1px solid var(--color-border);
}

.csd-custom-tag svg {
    color: var(--color-wood);
    flex-shrink: 0;
}


/* ==================== INLINE CTA ==================== */

.csd-inline-cta {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
    padding: 24px 32px;
    margin-bottom: 40px;
    background: rgba(74, 124, 89, 0.06);
    border: 1px solid rgba(74, 124, 89, 0.15);
    border-radius: var(--radius);
}

.csd-inline-cta p {
    margin: 0;
    font-family: var(--font-heading);
    font-size: 1.1rem;
    color: var(--color-charcoal);
    font-weight: 500;
}

.csd-inline-cta .btn {
    flex-shrink: 0;
    font-size: 0.85rem;
    padding: 10px 24px;
}


/* ==================== RESULT ==================== */

.csd-result__highlight {
    font-family: var(--font-heading);
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--color-charcoal);
    line-height: 1.5;
    margin-bottom: 24px;
    padding: 20px 24px;
    background: rgba(74, 124, 89, 0.05);
    border-radius: var(--radius);
    border-left: 3px solid var(--color-primary);
}

.csd-timeline {
    position: relative;
    padding-left: 28px;
    margin-bottom: 8px;
}

.csd-timeline::before {
    content: '';
    position: absolute;
    left: 4px;
    top: 6px;
    bottom: 6px;
    width: 1px;
    background: var(--color-border);
}

.csd-timeline__item {
    position: relative;
    padding: 10px 0;
}

.csd-timeline__dot {
    position: absolute;
    left: -28px;
    top: 16px;
    width: 9px;
    height: 9px;
    border-radius: 50%;
    background: var(--color-primary);
    box-shadow: 0 0 0 3px var(--color-cream);
}

.csd-timeline__item p {
    margin: 0;
    font-size: 0.95rem;
    color: var(--color-text);
    line-height: 1.5;
}


/* ==================== CHAT HIGHLIGHTS ==================== */

.csd-chat {
    margin-top: 28px;
    padding-top: 24px;
    border-top: 1px solid var(--color-border);
}

.csd-chat__header {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 16px;
}

.csd-chat__header svg {
    color: var(--color-primary);
    flex-shrink: 0;
}

.csd-chat__header span {
    font-family: var(--font-body);
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--color-text-light);
}

.csd-chat__thread {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.csd-chat__bubble {
    display: flex;
    gap: 10px;
    align-items: flex-start;
}

.csd-chat__avatar {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-body);
    font-size: 0.7rem;
    font-weight: 700;
    flex-shrink: 0;
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.csd-chat__content {
    padding: 12px 16px;
    border-radius: 12px;
    font-size: 0.9rem;
    line-height: 1.55;
    color: var(--color-charcoal);
    max-width: 420px;
}

.csd-chat__name {
    display: block;
    font-size: 0.7rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    margin-bottom: 4px;
}

.csd-chat__bubble--client {
    align-self: flex-start;
}

.csd-chat__bubble--client .csd-chat__avatar {
    background: var(--color-wood-light);
    color: var(--color-charcoal);
}

.csd-chat__bubble--client .csd-chat__content {
    background: var(--color-white);
    border: 1px solid var(--color-border);
    border-top-left-radius: 4px;
}

.csd-chat__bubble--client .csd-chat__name {
    color: var(--color-wood);
}

.csd-chat__bubble--us {
    align-self: flex-end;
    flex-direction: row-reverse;
}

.csd-chat__bubble--us .csd-chat__avatar {
    background: var(--color-primary);
    color: var(--color-white);
}

.csd-chat__bubble--us .csd-chat__content {
    background: rgba(74, 124, 89, 0.08);
    border: 1px solid rgba(74, 124, 89, 0.15);
    border-top-right-radius: 4px;
}

.csd-chat__bubble--us .csd-chat__name {
    color: var(--color-primary);
    text-align: right;
}


/* ==================== TESTIMONIAL ==================== */

.csd-testimonial {
    padding: 40px 0;
    margin: 0 0 40px;
    text-align: center;
    position: relative;
    border-bottom: 1px solid var(--color-border);
    scroll-margin-top: calc(var(--header-height, 72px) + 24px);
}

.csd-testimonial__quote-mark {
    font-family: var(--font-heading);
    font-size: 5rem;
    line-height: 1;
    color: var(--color-wood-light);
    margin-bottom: -20px;
    opacity: 0.6;
}

.csd-testimonial blockquote {
    margin: 0;
    padding: 0;
    border: none;
    background: transparent;
}

.csd-testimonial blockquote p {
    font-family: var(--font-heading);
    font-size: 1.4rem;
    font-style: italic;
    line-height: 1.5;
    color: var(--color-charcoal);
    margin-bottom: 20px;
    max-width: 560px;
    margin-left: auto;
    margin-right: auto;
}

.csd-testimonial cite {
    font-family: var(--font-body);
    font-style: normal;
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--color-text-light);
    font-weight: 600;
}


/* ==================== TAKEAWAYS ==================== */

.csd-takeaways {
    padding-bottom: 40px;
    border-bottom: 1px solid var(--color-border);
    margin-bottom: 0;
}

.csd-takeaways h2 {
    font-family: var(--font-heading);
    font-size: 1.4rem;
    color: var(--color-charcoal);
    margin-bottom: 20px;
    text-align: center;
}

.csd-takeaways__grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 12px;
}

.csd-takeaway-card {
    display: flex;
    align-items: flex-start;
    gap: 14px;
    padding: 16px 20px;
    background: var(--color-white);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    transition: border-color var(--transition);
}

.csd-takeaway-card:hover {
    border-color: var(--color-primary);
}

.csd-takeaway-card svg {
    flex-shrink: 0;
    margin-top: 1px;
    color: var(--color-primary);
}

.csd-takeaway-card p {
    margin: 0;
    font-size: 0.95rem;
    line-height: 1.5;
    color: var(--color-text);
}


/* ==================== WHAT THIS CASE PROVES ==================== */

.csd-proves {
    margin-top: 40px;
    padding-bottom: 40px;
    border-bottom: 1px solid var(--color-border);
    margin-bottom: 0;
}

.csd-proves h2 {
    font-family: var(--font-heading);
    font-size: 1.4rem;
    color: var(--color-charcoal);
    margin-bottom: 20px;
    text-align: center;
}

.csd-proves__grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 12px;
}

.csd-proves-card {
    display: flex;
    align-items: flex-start;
    gap: 14px;
    padding: 16px 20px;
    background: rgba(74, 124, 89, 0.05);
    border: 1px solid rgba(74, 124, 89, 0.15);
    border-radius: var(--radius);
}

.csd-proves-card svg {
    flex-shrink: 0;
    margin-top: 1px;
    color: var(--color-primary);
}

.csd-proves-card p {
    margin: 0;
    font-size: 0.95rem;
    font-weight: 500;
    line-height: 1.5;
    color: var(--color-charcoal);
}


/* ==================== RELATED CASES ==================== */

.csd-related {
    padding: 56px 0;
    background: var(--color-white);
    border-top: 1px solid var(--color-border);
}

.csd-related__header {
    text-align: center;
    margin-bottom: 32px;
}

.csd-related__header .csd-section__label {
    color: var(--color-text-light);
}

.csd-related__header h2 {
    font-size: 1.6rem;
    margin-bottom: 0;
}


/* ==================== RESPONSIVE ==================== */

/* --- Tablet: hero image collapses to single column --- */
@media (max-width: 900px) {
    .csd-hero__inner {
        grid-template-columns: 1fr;
        gap: 28px;
    }
    .csd-hero__image {
        max-width: 500px;
        max-height: 320px;
        margin: 0 auto;
        overflow: hidden;
    }
    .csd-hero__image img {
        height: 320px;
        object-fit: cover;
    }
    .csd-datastrip__cards {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* --- Tablet: sidebar becomes compact strip above body content --- */
@media (max-width: 960px) {
    .csd-layout {
        display: flex;
        flex-direction: column;
        gap: 0;
        padding-top: 32px;
    }
    /* Sidebar moves before body via order, shown as a compact quick-facts strip */
    .csd-sidebar {
        display: block;
        order: -1;
        padding-bottom: 24px;
        border-bottom: 1px solid var(--color-border);
        margin-bottom: 32px;
    }
    .csd-sidebar__inner {
        position: static;
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 16px;
    }
    /* TOC nav redundant on mobile (no sticky sidebar to scroll with) */
    .csd-sidebar__nav { display: none; }
    /* Inline CTA in the body already handles mobile conversion */
    .csd-sidebar__cta { display: none; }
}

/* --- Mobile --- */
@media (max-width: 640px) {
    .csd-hero {
        padding: 32px 0 24px;
    }
    .csd-hero__summary {
        font-size: 0.95rem;
    }

    /* Sidebar: single column on phone */
    .csd-sidebar__inner {
        grid-template-columns: 1fr;
    }

    /* Datastrip: 2-column compact layout (number + label inline) */
    .csd-datastrip__cards {
        grid-template-columns: repeat(2, 1fr);
        gap: 8px;
    }
    .csd-datastrip__card {
        display: flex;
        align-items: baseline;
        justify-content: center;
        gap: 8px;
        padding: 12px 14px;
        border-top-width: 2px;
    }
    .csd-datastrip__card-num { font-size: 1.2rem; }
    .csd-datastrip__card-label { margin-top: 0; font-size: 0.72rem; }
    .csd-datastrip__tags { gap: 6px; }
    .csd-datastrip__tag { font-size: 0.72rem; padding: 5px 10px; }

    /* Layout */
    .csd-layout { padding: 28px 0 40px; }
    .csd-section { margin-bottom: 28px; padding-bottom: 28px; }
    .csd-section h2 { font-size: 1.3rem; }

    /* Evidence images: single column */
    .csd-evidence { grid-template-columns: 1fr; }
    .csd-evidence__item:only-child { grid-column: span 1; max-width: none; }
    .csd-evidence--legacy { grid-template-columns: 1fr; }
    .csd-evidence--legacy .csd-evidence__item:first-child { grid-column: span 1; }

    .csd-block--challenge { padding-left: 14px; }

    .csd-inline-cta {
        flex-direction: column;
        text-align: center;
        padding: 18px 20px;
        gap: 14px;
    }
    .csd-inline-cta p { font-size: 0.95rem; }

    .csd-testimonial__quote-mark { font-size: 3.5rem; }
    .csd-testimonial blockquote p { font-size: 1.15rem; }

    .csd-takeaways h2 { font-size: 1.15rem; }
    .csd-result__highlight { font-size: 1.05rem; padding: 14px 16px; }
    .csd-related { padding: 36px 0; }
}


/* ==================== LIGHTBOX ==================== */

.csd-lb {
    position: fixed;
    inset: 0;
    z-index: 99999;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s, visibility 0.3s;
}

.csd-lb--open {
    opacity: 1;
    visibility: visible;
}

.csd-lb__backdrop {
    position: absolute;
    inset: 0;
    background: rgba(250, 248, 245, 0.82);
    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
    cursor: pointer;
}

.csd-lb__close {
    position: absolute;
    top: 24px;
    right: 24px;
    z-index: 3;
    background: var(--color-white);
    border: 1px solid var(--color-border);
    color: var(--color-charcoal);
    width: 44px;
    height: 44px;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-sm);
    transition: background 0.2s, box-shadow 0.2s;
}

.csd-lb__close:hover {
    background: var(--color-cream-dark);
    box-shadow: var(--shadow-md);
}

.csd-lb__prev,
.csd-lb__next {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    z-index: 3;
    background: var(--color-white);
    border: 1px solid var(--color-border);
    color: var(--color-charcoal);
    width: 48px;
    height: 48px;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-sm);
    transition: background 0.2s, box-shadow 0.2s;
}

.csd-lb__prev { left: 24px; }
.csd-lb__next { right: 24px; }

.csd-lb__prev:hover,
.csd-lb__next:hover {
    background: var(--color-cream-dark);
    box-shadow: var(--shadow-md);
}

.csd-lb__stage {
    position: relative;
    z-index: 2;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    height: 100%;
    padding: 80px 100px;
    pointer-events: none;
}

.csd-lb__img {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
    border-radius: var(--radius);
    box-shadow: 0 12px 48px rgba(0, 0, 0, 0.15);
    transition: opacity 0.3s;
    pointer-events: auto;
}

.csd-lb__footer {
    position: absolute;
    bottom: 24px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 3;
    display: flex;
    align-items: center;
    gap: 16px;
    background: var(--color-white);
    padding: 10px 20px;
    border-radius: 24px;
    box-shadow: var(--shadow-md);
    border: 1px solid var(--color-border);
    max-width: 80vw;
}

.csd-lb__caption {
    font-family: var(--font-body);
    font-size: 0.85rem;
    color: var(--color-text);
    font-style: italic;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.csd-lb__counter {
    font-family: var(--font-body);
    font-size: 0.75rem;
    color: var(--color-text-light);
    white-space: nowrap;
    flex-shrink: 0;
}

@media (max-width: 640px) {
    .csd-lb__stage { padding: 60px 16px 80px; }
    .csd-lb__prev { left: 8px; width: 40px; height: 40px; }
    .csd-lb__next { right: 8px; width: 40px; height: 40px; }
    .csd-lb__close { top: 12px; right: 12px; width: 40px; height: 40px; }
    .csd-lb__footer { padding: 8px 14px; max-width: 90vw; }
    .csd-lb__caption { font-size: 0.78rem; }
}