/* ================================================================
   ZD CANAL PAGE — ZD Canal-Top Solar & Elephant Protection
   Modern page matching rescue.css style patterns
================================================================ */

/* ===== HERO ===== */
.zdc-hero {
    position: relative;
    width: 100%;
    overflow: hidden;
    background: #000;
}

.zdc-hero-image {
    position: relative;
    width: 100%;
    height: 100vh;
    min-height: 560px;
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
}

.zdc-hero-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(
        to bottom,
        rgba(0,0,0,0.3) 0%,
        rgba(0,0,0,0.1) 35%,
        rgba(0,0,0,0.75) 100%
    );
    pointer-events: none;
}

.zdc-hero-content {
    position: absolute;
    bottom: 12%;
    left: 0;
    width: 100%;
    text-align: center;
    color: #fff;
    padding: 0 24px;
    z-index: 2;
}

/* Hero eyebrow */
.zdc-eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 0.6rem;
    font-size: 0.72rem;
    font-weight: 700;
    letter-spacing: 3.5px;
    text-transform: uppercase;
    color: var(--secondary);
    margin-bottom: 1rem;
    opacity: 0;
    animation: fadeInUp 0.8s var(--ease-out) 0.3s forwards;
}

.zdc-hero-title {
    font-family: var(--font-heading);
    font-size: clamp(2.2rem, 5.5vw, 4.2rem);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 2px;
    margin-bottom: 1rem;
    text-shadow: 2px 4px 20px rgba(0,0,0,0.55);
    line-height: 1.15;
    opacity: 0;
    animation: fadeInUp 0.9s var(--ease-out) 0.5s forwards;
}

.zdc-hero-subtitle {
    font-family: var(--font-body);
    font-size: clamp(1rem, 2vw, 1.2rem);
    font-weight: 300;
    max-width: 720px;
    margin: 0 auto;
    text-shadow: 1px 2px 8px rgba(0,0,0,0.5);
    opacity: 0;
    animation: fadeInUp 0.9s var(--ease-out) 0.7s forwards;
}

/* Hero CTA */
.zdc-hero-cta {
    display: inline-flex;
    align-items: center;
    gap: 0.6rem;
    margin-top: 2rem;
    padding: 0.85rem 2rem;
    background: rgba(255,255,255,0.15);
    backdrop-filter: blur(8px);
    border: 1px solid rgba(255,255,255,0.35);
    color: #fff;
    border-radius: var(--radius-full);
    font-size: 0.88rem;
    font-weight: 600;
    letter-spacing: 1px;
    text-transform: uppercase;
    text-decoration: none;
    transition: background 0.3s ease, transform 0.3s ease;
    opacity: 0;
    animation: fadeInUp 0.9s var(--ease-out) 0.9s forwards;
}

.zdc-hero-cta:hover {
    background: rgba(255,255,255,0.28);
    transform: translateY(-3px);
}

.zdc-hero-cta i {
    animation: bounceDown 1.6s ease infinite;
}

@keyframes bounceDown {
    0%, 100% { transform: translateY(0); }
    50%       { transform: translateY(5px); }
}

/* ================================================================
   EYEBROW VARIANTS FOR DARK SECTIONS
================================================================ */
.eyebrow-light {
    color: rgba(255,255,255,0.85) !important;
}
.eyebrow-light::before {
    background: rgba(255,255,255,0.85) !important;
}
.eyebrow-gold {
    color: var(--accent) !important;
}
.eyebrow-gold::before {
    background: var(--accent) !important;
}

/* ================================================================
   SECTION 2 — ABOUT THE ZD CANAL
================================================================ */
.zdc-about {
    padding: 7rem 0;
    background: var(--white);
    overflow: hidden;
}

.zdc-about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 5rem;
    align-items: center;
}

.zdc-about-text .section-title {
    text-align: left;
}

.zdc-about-text p {
    font-size: 1rem;
    line-height: 1.88;
    color: var(--gray);
    margin-top: 1.4rem;
    text-align: justify;
}

.zdc-about-text p strong {
    color: var(--primary);
    font-weight: 600;
}

.zdc-about-stats {
    display: flex;
    gap: 2.5rem;
    margin-top: 2.5rem;
    padding-top: 2rem;
    border-top: 1px solid rgba(15,76,42,0.1);
    flex-wrap: wrap;
}

.zdc-about-stat strong {
    display: block;
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary);
    line-height: 1.1;
    margin-bottom: 0.3rem;
}

.zdc-about-stat span {
    font-size: 0.78rem;
    color: var(--gray);
    text-transform: uppercase;
    letter-spacing: 1.5px;
    font-weight: 600;
}

/* Map image */
.zdc-about-map {
    position: relative;
}

.zdc-map-wrapper {
    position: relative;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.zdc-map-wrapper img {
    width: 100%;
    display: block;
    transition: transform 0.8s var(--ease-out);
}

.zdc-map-wrapper:hover img {
    transform: scale(1.03);
}

.zdc-map-label {
    position: absolute;
    bottom: 16px;
    left: 16px;
    background: rgba(7,14,9,0.72);
    backdrop-filter: blur(8px);
    color: #fff;
    padding: 0.55rem 1.1rem;
    border-radius: var(--radius-md);
    font-size: 0.83rem;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    border: 1px solid rgba(255,255,255,0.12);
}

.zdc-map-label i {
    color: var(--secondary);
}

/* ================================================================
   SECTION 3 — THE CHALLENGE (DARK)
================================================================ */
.zdc-challenge {
    padding: 7rem 0;
    background: linear-gradient(135deg, #0a2e18 0%, #0f4c2a 50%, #0c3a1f 100%);
    position: relative;
    overflow: hidden;
}

/* Decorative glows */
.zdc-challenge-deco {
    position: absolute;
    border-radius: 50%;
    pointer-events: none;
}
.zdc-challenge-deco-1 {
    width: 500px;
    height: 500px;
    top: -150px;
    right: -100px;
    background: radial-gradient(circle, rgba(34,197,94,0.1), transparent 70%);
}
.zdc-challenge-deco-2 {
    width: 350px;
    height: 350px;
    bottom: -100px;
    left: -80px;
    background: radial-gradient(circle, rgba(245,158,11,0.08), transparent 70%);
}

.zdc-challenge-header {
    text-align: center;
    margin-bottom: 3.5rem;
    position: relative;
    z-index: 1;
}

.zdc-challenge-intro {
    font-size: 1.02rem;
    color: rgba(255,255,255,0.68);
    max-width: 780px;
    margin: 1.5rem auto 0;
    line-height: 1.88;
}

/* Challenge cards grid */
.zdc-challenge-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.5rem;
    margin-bottom: 2.5rem;
    position: relative;
    z-index: 1;
}

.zdc-challenge-card {
    background: rgba(255,255,255,0.05);
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: var(--radius-lg);
    padding: 2rem 1.5rem;
    text-align: center;
    backdrop-filter: blur(4px);
    transition: transform 0.45s var(--ease-out), background 0.45s ease, border-color 0.45s ease;
    position: relative;
    overflow: hidden;
}

.zdc-challenge-card::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--secondary), var(--accent));
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.4s var(--ease-out);
}

.zdc-challenge-card:hover {
    transform: translateY(-10px);
    background: rgba(255,255,255,0.09);
    border-color: rgba(34,197,94,0.3);
}

.zdc-challenge-card:hover::before {
    transform: scaleX(1);
}

.zdc-challenge-card-icon {
    width: 54px;
    height: 54px;
    background: rgba(34,197,94,0.18);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.2rem;
    font-size: 1.3rem;
    color: var(--secondary);
    transition: transform 0.4s var(--ease-out);
}

.zdc-challenge-card:hover .zdc-challenge-card-icon {
    transform: scale(1.15) rotate(-5deg);
}

.zdc-challenge-card-num {
    font-family: var(--font-heading);
    font-size: 2.8rem;
    font-weight: 700;
    color: #fff;
    line-height: 1;
    margin-bottom: 0.5rem;
}

.zdc-challenge-card-label {
    font-size: 0.85rem;
    font-weight: 600;
    color: rgba(255,255,255,0.88);
    text-transform: uppercase;
    letter-spacing: 0.8px;
    margin-bottom: 0.5rem;
}

.zdc-challenge-card-sub {
    font-size: 0.78rem;
    color: rgba(255,255,255,0.45);
    line-height: 1.5;
}

/* Bottom detail strip */
.zdc-challenge-detail {
    background: rgba(255,255,255,0.05);
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: var(--radius-md);
    padding: 2rem 2.5rem;
    text-align: center;
    position: relative;
    z-index: 1;
    border-left: 3px solid var(--secondary);
}

.zdc-challenge-detail p {
    font-size: 0.98rem;
    line-height: 1.88;
    color: rgba(255,255,255,0.68);
}

/* ================================================================
   SECTION 4 — CRISIS PARALLAX
================================================================ */
.zdc-crisis {
    position: relative;
    min-height: 75vh;
    display: flex;
    align-items: center;
    overflow: hidden;
}

.zdc-crisis-bg-wrap {
    position: absolute;
    inset: 0;
    z-index: 0;
}

.zdc-crisis-bg-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.zdc-crisis-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(
        105deg,
        rgba(7,14,9,0.92) 0%,
        rgba(7,14,9,0.68) 55%,
        rgba(7,14,9,0.18) 100%
    );
}

.zdc-crisis-inner {
    position: relative;
    z-index: 2;
    padding: 7rem 0;
}

.zdc-crisis-text {
    max-width: 600px;
}

.zdc-crisis-text p {
    color: rgba(255,255,255,0.78);
    font-size: 1.03rem;
    line-height: 1.88;
    margin-top: 1.5rem;
}

/* ================================================================
   SECTION 5 — SOLUTION TIMELINE
================================================================ */
.zdc-solution {
    padding: 7rem 0;
    background: var(--bg-light);
    overflow: hidden;
}

.zdc-solution-header {
    text-align: center;
    margin-bottom: 2.5rem;
}

.zdc-solution-intro {
    max-width: 820px;
    margin: 1.8rem auto 0;
    font-size: 1.03rem;
    line-height: 1.88;
    color: var(--gray);
}

/* Timeline container */
.zdc-timeline {
    position: relative;
    max-width: 960px;
    margin: 0 auto;
}

/* Vertical center line */
.zdc-timeline-track {
    position: absolute;
    left: 50%;
    top: 0;
    bottom: 0;
    width: 2px;
    background: linear-gradient(to bottom, var(--secondary), var(--accent));
    transform: translateX(-50%);
    border-radius: 2px;
}

/* Each timeline row */
.zdc-tl-item {
    display: grid;
    grid-template-columns: 1fr 80px 1fr;
    align-items: center;
    gap: 1.5rem;
    padding: 0.4rem 0;
}

/* Marker circle */
.zdc-tl-marker {
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 2;
}

.zdc-tl-num {
    width: 60px;
    height: 60px;
    background: var(--grad-primary);
    color: #fff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-heading);
    font-size: 1.1rem;
    font-weight: 700;
    letter-spacing: 1px;
    border: 3px solid var(--secondary);
    box-shadow: 0 0 0 6px var(--bg-light), var(--shadow-sm);
    transition: transform 0.4s var(--ease-out), box-shadow 0.4s ease;
}

.zdc-tl-item:hover .zdc-tl-num {
    transform: scale(1.1);
    box-shadow: 0 0 0 8px var(--bg-light), var(--shadow-glow);
}

/* Timeline card */
.zdc-tl-card {
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: 2rem;
    box-shadow: var(--shadow-sm);
    border: 1px solid rgba(34,197,94,0.1);
    transition: transform 0.45s var(--ease-out), box-shadow 0.45s var(--ease-out);
    position: relative;
    overflow: hidden;
}

.zdc-tl-card::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--secondary), var(--teal));
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.4s var(--ease-out);
}

.zdc-tl-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-md);
}

.zdc-tl-card:hover::before {
    transform: scaleX(1);
}

.zdc-tl-card-icon {
    width: 44px;
    height: 44px;
    background: linear-gradient(135deg, rgba(34,197,94,0.15), rgba(13,148,136,0.15));
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
    color: var(--primary);
    margin-bottom: 1rem;
    transition: transform 0.35s var(--ease-out);
}

.zdc-tl-card:hover .zdc-tl-card-icon {
    transform: scale(1.1) rotate(-5deg);
}

.zdc-tl-card h3 {
    font-family: var(--font-heading);
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--primary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 0.75rem;
}

.zdc-tl-card p {
    font-size: 0.95rem;
    color: var(--gray);
    line-height: 1.8;
}

.zdc-tl-empty {
    /* fills empty side of timeline */
}

/* ================================================================
   SECTION 6 — PROJECT OUTPUTS (DARK)
================================================================ */
.zdc-outputs {
    padding: 7rem 0;
    background: linear-gradient(135deg, #070e09 0%, #0a1a0e 100%);
    position: relative;
    overflow: hidden;
}

.zdc-outputs-deco-1 {
    position: absolute;
    width: 600px;
    height: 600px;
    top: -200px;
    left: -150px;
    background: radial-gradient(circle, rgba(34,197,94,0.07), transparent 70%);
    pointer-events: none;
}

.zdc-outputs-deco-2 {
    position: absolute;
    width: 400px;
    height: 400px;
    bottom: -120px;
    right: -80px;
    background: radial-gradient(circle, rgba(245,158,11,0.06), transparent 70%);
    pointer-events: none;
}

.zdc-outputs-header {
    text-align: center;
    margin-bottom: 4rem;
    position: relative;
    z-index: 1;
}

.zdc-outputs-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
    margin-bottom: 3.5rem;
    position: relative;
    z-index: 1;
}

.zdc-output-card {
    text-align: center;
    padding: 2.8rem 1.5rem 2.2rem;
    border-radius: var(--radius-lg);
    background: rgba(255,255,255,0.04);
    border: 1px solid rgba(255,255,255,0.07);
    transition: transform 0.45s var(--ease-out), background 0.45s ease, border-color 0.45s ease;
    position: relative;
    overflow: hidden;
}

.zdc-output-card::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--secondary), var(--accent));
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.4s var(--ease-out);
}

.zdc-output-card:hover {
    transform: translateY(-10px);
    background: rgba(255,255,255,0.08);
    border-color: rgba(34,197,94,0.2);
}

.zdc-output-card:hover::before {
    transform: scaleX(1);
}

.zdc-output-icon {
    font-size: 1.8rem;
    color: var(--secondary);
    margin-bottom: 1.2rem;
    transition: transform 0.4s var(--ease-out);
}

.zdc-output-card:hover .zdc-output-icon {
    transform: scale(1.15);
}

.zdc-output-num {
    font-family: var(--font-heading);
    font-size: 3.8rem;
    font-weight: 700;
    color: #fff;
    line-height: 1;
    display: inline;
}

.zdc-output-suffix {
    font-family: var(--font-heading);
    font-size: 2.8rem;
    font-weight: 700;
    color: var(--secondary);
    display: inline;
    margin-left: 2px;
}

.zdc-output-label {
    font-size: 0.83rem;
    color: rgba(255,255,255,0.55);
    text-transform: uppercase;
    letter-spacing: 1.5px;
    margin-top: 0.8rem;
    display: block;
}

/* Feature checklist */
.zdc-outputs-features {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem 2rem;
    position: relative;
    z-index: 1;
    background: rgba(255,255,255,0.03);
    border: 1px solid rgba(255,255,255,0.07);
    border-left: 3px solid var(--secondary);
    border-radius: var(--radius-md);
    padding: 2rem 2.5rem;
}

.zdc-feature-item {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
    font-size: 0.92rem;
    color: rgba(255,255,255,0.65);
    line-height: 1.6;
}

.zdc-feature-item i {
    color: var(--secondary);
    margin-top: 0.2rem;
    flex-shrink: 0;
    font-size: 0.88rem;
}

/* ================================================================
   SECTION 7 — PROJECT STATUS
================================================================ */
.zdc-status {
    padding: 7rem 0;
    background: var(--white);
}

.zdc-status-header {
    text-align: center;
    margin-bottom: 3.5rem;
}

.zdc-status-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.5rem;
    margin-bottom: 2.5rem;
}

.zdc-status-card {
    background: var(--bg-light);
    border-radius: var(--radius-lg);
    padding: 2.5rem 1.5rem;
    text-align: center;
    border: 1px solid rgba(34,197,94,0.1);
    transition: transform 0.45s var(--ease-out), box-shadow 0.45s var(--ease-out), background 0.45s ease;
    position: relative;
    overflow: hidden;
}

.zdc-status-card::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 3px;
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.4s var(--ease-out);
}

.zdc-status-done::before    { background: linear-gradient(90deg, #22c55e, #16a34a); }
.zdc-status-active::before  { background: linear-gradient(90deg, #f59e0b, #d97706); }
.zdc-status-pending::before { background: linear-gradient(90deg, #60a5fa, #3b82f6); }

.zdc-status-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-md);
    background: var(--white);
}

.zdc-status-card:hover::before {
    transform: scaleX(1);
}

.zdc-status-icon {
    width: 64px;
    height: 64px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.6rem;
    margin: 0 auto 1.2rem;
    transition: transform 0.4s var(--ease-out);
}

.zdc-status-done   .zdc-status-icon { background: rgba(34,197,94,0.14);  color: #16a34a; }
.zdc-status-active .zdc-status-icon { background: rgba(245,158,11,0.14); color: #d97706; }
.zdc-status-pending .zdc-status-icon { background: rgba(96,165,250,0.14); color: #3b82f6; }

.zdc-status-card:hover .zdc-status-icon {
    transform: scale(1.1) rotate(-5deg);
}

.zdc-status-card h3 {
    font-family: var(--font-heading);
    font-size: 1rem;
    font-weight: 700;
    color: var(--primary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 0.75rem;
    line-height: 1.3;
}

.zdc-status-card p {
    font-size: 0.9rem;
    color: var(--gray);
    line-height: 1.75;
    margin-bottom: 1.2rem;
}

.zdc-status-badge {
    display: inline-block;
    padding: 0.3rem 0.9rem;
    border-radius: var(--radius-full);
    font-size: 0.72rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.zdc-status-badge-done    { background: rgba(34,197,94,0.12);  color: #16a34a;  border: 1px solid rgba(34,197,94,0.25); }
.zdc-status-badge-active  { background: rgba(245,158,11,0.12); color: #d97706;  border: 1px solid rgba(245,158,11,0.25); }
.zdc-status-badge-pending { background: rgba(96,165,250,0.12); color: #2563eb;  border: 1px solid rgba(96,165,250,0.25); }

/* Status note */
.zdc-status-note {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    background: var(--bg-light);
    border: 1px solid rgba(34,197,94,0.15);
    border-left: 3px solid var(--secondary);
    border-radius: var(--radius-md);
    padding: 1.5rem 2rem;
}

.zdc-status-note i {
    color: var(--secondary);
    font-size: 1.1rem;
    margin-top: 0.15rem;
    flex-shrink: 0;
}

.zdc-status-note p {
    font-size: 0.97rem;
    line-height: 1.8;
    color: var(--gray);
    margin: 0;
}

.zdc-status-note p strong {
    color: var(--primary);
}

/* ================================================================
   SECTION 8 — PHOTO GALLERY
================================================================ */
.zdc-gallery {
    padding: 7rem 0 0;
    background: var(--dark);
}

.zdc-gallery-header {
    text-align: center;
    margin-bottom: 3.5rem;
}

.zdc-gallery-subtitle {
    font-size: 1rem;
    color: rgba(255,255,255,0.48);
    margin-top: 1.2rem;
    line-height: 1.7;
}

/* Gallery grid */
.zdc-gallery-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    grid-auto-rows: 280px;
    gap: 8px;
    padding-bottom: 0;
}

/* Base gallery item */
.zdc-gallery-item {
    position: relative;
    overflow: hidden;
    cursor: pointer;
    background: #111;
    border-radius: 0;
}

.zdc-gallery-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    transition: transform 0.7s var(--ease-out);
}

.zdc-gallery-item:hover img {
    transform: scale(1.08);
}

/* Large item: 2 cols × 2 rows */
.zdc-gallery-item.zdc-gallery-large {
    grid-column: span 2;
    grid-row: span 2;
}

/* Wide item: 2 cols × 1 row */
.zdc-gallery-item.zdc-gallery-wide {
    grid-column: span 2;
}

/* Overlay on hover */
.zdc-gallery-overlay {
    position: absolute;
    inset: 0;
    background: rgba(0,0,0,0);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    color: rgba(255,255,255,0);
    transition: background 0.35s ease, color 0.35s ease;
}

.zdc-gallery-item:hover .zdc-gallery-overlay {
    background: rgba(0,0,0,0.45);
    color: rgba(255,255,255,0.9);
}

/* ================================================================
   LIGHTBOX
================================================================ */
.zdc-lightbox {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.96);
    z-index: 10000;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.35s ease, visibility 0.35s ease;
}

.zdc-lightbox.active {
    opacity: 1;
    visibility: visible;
}

.zdc-lightbox-img-wrap {
    max-width: 90vw;
    max-height: 88vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

.zdc-lightbox-img-wrap img {
    max-width: 90vw;
    max-height: 88vh;
    object-fit: contain;
    box-shadow: 0 0 80px rgba(0,0,0,0.8);
    display: block;
    transition: opacity 0.2s ease;
}

.zdc-lightbox-close {
    position: fixed;
    top: 20px;
    right: 20px;
    background: rgba(255,255,255,0.1);
    border: 1px solid rgba(255,255,255,0.2);
    color: #fff;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    font-size: 1.2rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 0.3s ease;
    z-index: 10001;
}

.zdc-lightbox-close:hover {
    background: rgba(255,255,255,0.25);
}

.zdc-lightbox-nav {
    position: fixed;
    top: 50%;
    transform: translateY(-50%);
    background: rgba(255,255,255,0.08);
    border: 1px solid rgba(255,255,255,0.18);
    color: #fff;
    width: 58px;
    height: 58px;
    border-radius: 50%;
    font-size: 1.3rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 0.3s ease;
    z-index: 10001;
}

.zdc-lightbox-prev { left: 16px; }
.zdc-lightbox-next { right: 16px; }

.zdc-lightbox-nav:hover {
    background: rgba(255,255,255,0.22);
}

.zdc-lightbox-counter {
    position: fixed;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    color: rgba(255,255,255,0.5);
    font-size: 0.85rem;
    letter-spacing: 1px;
    z-index: 10001;
}

/* ================================================================
   RESPONSIVE
================================================================ */
@media (max-width: 1024px) {
    .zdc-challenge-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .zdc-outputs-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .zdc-status-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .zdc-outputs-features {
        grid-template-columns: repeat(2, 1fr);
    }
    .zdc-gallery-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 860px) {
    .zdc-hero-image {
        height: 90vh;
        background-attachment: scroll;
    }
    .zdc-hero-title {
        font-size: 2.2rem;
    }
    .zdc-about-grid {
        grid-template-columns: 1fr;
        gap: 3rem;
    }
    .zdc-about-text .section-title {
        font-size: 2rem;
    }
    .zdc-timeline-track {
        display: none;
    }
    .zdc-tl-item {
        grid-template-columns: 1fr;
        padding: 0;
        margin-bottom: 2rem;
    }
    .zdc-tl-marker {
        display: none;
    }
    .zdc-tl-empty {
        display: none;
    }
    .zdc-tl-content {
        width: 100%;
    }
    .zdc-gallery-grid {
        grid-template-columns: repeat(2, 1fr);
        grid-auto-rows: 220px;
    }
    .zdc-gallery-item.zdc-gallery-large {
        grid-column: span 2;
        grid-row: span 1;
    }
}

@media (max-width: 640px) {
    .zdc-hero-title {
        font-size: 1.9rem;
    }
    .zdc-about,
    .zdc-challenge,
    .zdc-solution,
    .zdc-outputs,
    .zdc-status,
    .zdc-gallery {
        padding: 5rem 0;
    }
    .zdc-about-stats {
        gap: 1.5rem;
    }
    .zdc-challenge-grid {
        grid-template-columns: 1fr 1fr;
        gap: 1rem;
    }
    .zdc-outputs-grid {
        grid-template-columns: 1fr 1fr;
        gap: 1rem;
    }
    .zdc-outputs-features {
        grid-template-columns: 1fr;
    }
    .zdc-status-grid {
        grid-template-columns: 1fr 1fr;
        gap: 1rem;
    }
    .zdc-output-num {
        font-size: 3rem;
    }
}

@media (max-width: 480px) {
    .zdc-challenge-grid {
        grid-template-columns: 1fr;
    }
    .zdc-outputs-grid {
        grid-template-columns: 1fr;
    }
    .zdc-status-grid {
        grid-template-columns: 1fr;
    }
    .zdc-gallery-grid {
        grid-template-columns: 1fr;
    }
    .zdc-gallery-item.zdc-gallery-large,
    .zdc-gallery-item.zdc-gallery-wide {
        grid-column: span 1;
    }
    .zdc-hero-cta {
        padding: 0.75rem 1.4rem;
        font-size: 0.8rem;
    }
    .zdc-status-note {
        flex-direction: column;
    }
}