*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
body  { color: var(--body-text); font-family: 'Segoe UI', system-ui, sans-serif; }
img   { max-width: 100%; height: auto; display: block; }

/* ─── Shared utilities ──────────────────────────────────── */
.section-label {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 0.78rem;
    font-weight: 700;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--cs-dark-color);
    background: var(--cs-light-color);
    padding: 6px 14px;
    border-radius: 50px;
    margin-bottom: 14px;
}
.section-label::before {
    content: '';
    width: 6px; height: 6px;
    background: var(--cs-dark-color);
    border-radius: 50%;
}
.section-title {
    font-size: clamp(1.8rem, 4vw, 2.6rem);
    font-weight: 800;
    color: var(--dark);
    line-height: 1.2;
}

/* Shared reusable classes */
.icon-box {
    width: 52px; height: 52px; min-width: 52px;
    border-radius: var(--radius-md);
    display: flex; align-items: center; justify-content: center;
    font-size: 1.35rem;
    background: var(--cs-light-color);
    color: var(--cs-dark-color);
}
.icon-box--sm {
    width: 48px; height: 48px; min-width: 48px;
    border-radius: 50%;
    font-size: 1.25rem;
}
.card-base {
    background: var(--white);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
}
.card-lift {
    transition: transform var(--transition), box-shadow var(--transition);
}
.card-lift:hover { transform: translateY(-6px); }

/* Scroll-reveal */
.reveal { opacity: 0; transform: translateY(32px); transition: opacity .65s ease, transform .65s ease; }
.reveal.visible { opacity: 1; transform: translateY(0); }
.reveal-delay-1 { transition-delay: .1s; }
.reveal-delay-2 { transition-delay: .2s; }
.reveal-delay-3 { transition-delay: .3s; }
.reveal-delay-4 { transition-delay: .4s; }

/* ─── HERO ───────────────────────────────────────────────── */
.heroSection { padding: var(--section-py) 0; overflow: hidden; }
.heroSection h1 { font-size: clamp(2rem,5vw,3.2rem); font-weight: 900; color: var(--dark); line-height: 1.15; margin-top: 20px; }
.heroSection__desc { font-size: 1rem; line-height: 1.85; color: var(--body-text); margin-bottom: 32px; margin-top: 32px; max-width: 500px; }
.heroSection__image { animation: floatUp 2s ease-in-out infinite alternate; }
.heroSection__image img { margin-left: auto; }
@keyframes floatUp { from { transform: translateY(0); } to { transform: translateY(-20px); } }

/* ─── OVERVIEW ───────────────────────────────────────────── */
.lg-overview { padding: var(--section-py) 0; background: #fafafa; }
.overview-body { font-size: .97rem; line-height: 1.95; color: var(--body-text); margin-bottom: 48px; }
.overview-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 20px; }
.overview-card { padding: 24px 22px; display: flex; align-items: flex-start; gap: 16px; min-height:auto !important; transition: transform 0.3s ease; }
.overview-card:hover{ transform: translateY(-8px);}
.ov-label { font-size: .78rem; font-weight: 700; color: var(--body-text); text-transform: uppercase; letter-spacing: .06em; margin-bottom: 8px; }
.ov-value { font-size: .9rem; color: var(--dark); font-weight: 600; margin: 0; }

/* ─── TOOLS ──────────────────────────────────────────────── */
.lg-tools { padding: 48px 0; }
.tools-label { font-size: .92rem; font-weight: 800; letter-spacing: .06em; text-transform: uppercase; color: var(--dark); white-space: nowrap; margin-right: 8px; }
.tools-label span { color: var(--cs-dark-color); }
.tools-track-wrap { flex: 1; overflow: hidden; position: relative; }
.tools-track-wrap::before,
.tools-track-wrap::after { content: ''; position: absolute; top: 0; bottom: 0; width: 60px; z-index: 2; pointer-events: none; }
.tools-track-wrap::before { left: 0;  background: linear-gradient(to right, var(--white), transparent); }
.tools-track-wrap::after  { right: 0; background: linear-gradient(to left,  var(--white), transparent); }
.tools-track { display: flex; gap: 12px; width: max-content; animation: toolsScroll 22s linear infinite; }
.tools-track:hover { animation-play-state: paused; }
@keyframes toolsScroll { from { transform: translateX(0); } to { transform: translateX(-50%); } }
.tool-pill {
    display: inline-flex; align-items: center; gap: 9px;
    padding: 10px 20px;
    border: 1.5px solid var(--border); border-radius: 50px;
    background: var(--white); font-size: .88rem; font-weight: 600; color: var(--dark);
    white-space: nowrap; cursor: default;
    transition: border-color var(--transition), transform var(--transition);
}
.tool-pill:hover { border-color: var(--cs-dark-color); transform: translateY(-3px); }
.tool-pill img { width: 22px; height: 22px; object-fit: contain; border-radius: 4px; }

/* ─── TECH SPEC & KEY FEATURES ───────────────────────────── */
.lg-tech     { padding: var(--section-py) 0; }
.lg-features { padding: var(--section-py) 0; background: #fafafa; }
.tech-row {
    display: grid; grid-template-columns: 64px 190px 1fr;
    align-items: center; gap: 20px; padding: 24px 28px;
}
.tech-row + .tech-row { border-top: 1px solid var(--border); }
.tech-title { font-size: .92rem; font-weight: 700; color: var(--dark); padding-top: 4px; }
.tech-desc  { font-size: .9rem; line-height: 1.75; color: var(--body-text); }

/* ─── CHALLENGES & SOLUTIONS ─────────────────────────────── */
.lg-challenges-solutions { padding: var(--section-py) 0; background: var(--white); }
.cs-wrapper { border: 1px solid #e0e0e0; border-radius: var(--radius-lg); overflow: hidden; }

/* Desktop table */
.cs-table        { display: grid; grid-template-columns: 1fr 1fr; }
.cs-header-row   { grid-column: 1/-1; display: grid; grid-template-columns: 1fr 1fr; border-bottom: 1px solid #e0e0e0; }
.cs-data-row     { grid-column: 1/-1; display: grid; grid-template-columns: 1fr 1fr; border-bottom: 1px solid #e0e0e0; }
.cs-data-row:last-child { border-bottom: none; }

.cs-header-cell  { padding: 20px 24px; font-weight: 700; font-size: .78rem; letter-spacing: .12em; text-transform: uppercase; }
.cs-challenges-header { background: #ce212817; }
.cs-challenges-header .cs-header-label { color: var(--primary-color); }
.cs-solutions-header  { background: #0080001c; border-left: 1px solid #e0e0e0; }
.cs-solutions-header  .cs-header-label { color: #0b9921; }

.cs-data-cell { padding: 28px 24px; display: flex; gap: 16px; align-items: flex-start; border-right: 1px solid #e0e0e0; }
.cs-solution-cell { border-right: none; }

.cs-number {
    flex-shrink: 0; width: 32px; height: 32px; min-width: 32px;
    display: flex; align-items: center; justify-content: center;
    border-radius: 50%; font-weight: 800; font-size: .95rem;
}
.cs-number-challenge { background: #ce212817; color: var(--primary-color); }
.cs-number-solution  { background: #0080001c; color: green; }
.cs-content h5 { font-size: .95rem; font-weight: 700; color: var(--dark); margin: 0 0 6px; line-height: 1.3; }
.cs-content p  { font-size: .85rem; line-height: 1.65; color: var(--body-text); margin: 0; }

/* ─── RESULTS & IMPACT ───────────────────────────────────── */
.lg-impact { padding: var(--section-py) 0; background: #f9f9f9; }
.impact-card { padding: 26px 22px; height: 100%; transition: transform 0.3s ease; }
.impact-card:hover{ transform: translateY(-8px);}
.impact-card i { color: var(--cs-dark-color); position: relative; top: 2px; }
.impact-card p { font-size: .88rem; line-height: 1.85; color: var(--body-text); margin: 0; }

/* ─── PLATFORM SNAPSHOTS ─────────────────────────────────── */
.lg-snapshots { padding: var(--section-py) 0; }
.snapshot-wrap { border-radius: var(--radius-lg); overflow: hidden; border: 1px solid var(--border); line-height: 0; }
.snapshot-wrap img { width: 100%; display: block; transition: transform .5s ease; }
.snapshot-wrap:hover img { transform: scale(1.015); }

/* ─── RELATED PROJECTS ───────────────────────────────────── */
.rp-section { padding: 90px 0 100px; overflow: hidden; background: #f9f9f9; }
.rp-grid { display: grid; grid-template-columns: repeat(3,1fr); gap: 26px; }
.rp-card {
    position: relative; display: block;
    border-radius: var(--radius-lg); overflow: hidden;
    min-height: 340px; text-decoration: none; background: var(--dark);
    transition: box-shadow var(--transition);
}
.rp-card:hover { box-shadow: 0 24px 56px rgb(from var(--cs-dark-color) r g b / 19%), 0 4px 16px rgb(0 0 0/.15); }
.rp-card::before {
    content: ''; position: absolute; bottom: 0; left: 0; right: 0; height: 3px;
    background: var(--cs-dark-color);
    transform: scaleX(0); transform-origin: left;
    transition: transform var(--transition); z-index: 3;
}
.rp-card:hover::before { transform: scaleX(1); }
.rp-img-wrap { position: absolute; inset: 0; }
.rp-img-wrap img { width: 100%; height: 100%; object-fit: cover; display: block; transition: transform .7s ease; transform-origin: center bottom; }
.rp-card:hover .rp-img-wrap img { transform: scale(1.07); }
.rp-img-wrap::after {
    content: ''; position: absolute; inset: 0;
    background: linear-gradient(to top, rgba(10,5,20,.88) 0%, rgba(10,5,20,.45) 45%, rgba(10,5,20,.1) 75%, transparent 100%);
    transition: opacity var(--transition);
}
.rp-card:hover .rp-img-wrap::after { opacity: .78; }
.rp-content { position: absolute; inset: 0; display: flex; flex-direction: column; justify-content: flex-end; padding: 28px 26px; z-index: 2; }
.rp-tag {
    display: inline-flex; align-items: center; gap: 6px;
    font-size: .7rem; font-weight: 700; letter-spacing: .1em; text-transform: uppercase;
    color: var(--cs-dark-color); background: rgba(255,66,181,.18);
    border: 1px solid rgba(255,66,181,.3); padding: 4px 12px; border-radius: 50px;
    backdrop-filter: blur(6px); margin-bottom: 12px; width: fit-content;
    transform: translateY(8px); opacity: 0;
    transition: transform var(--transition), opacity var(--transition); transition-delay: .05s;
}
.rp-card:hover .rp-tag,
.rp-card:focus .rp-tag { transform: translateY(0); opacity: 1; }
.rp-title-text { color: #fff; font-size: 1.05rem; font-weight: 800; line-height: 1.35; margin: 0 0 10px; }
.rp-excerpt { color: rgba(255,255,255,.78); font-size: .82rem; line-height: 1.65; margin: 0 0 18px; max-height: 0; overflow: hidden; opacity: 0; transition: max-height var(--transition), opacity var(--transition); }
.rp-card:hover .rp-excerpt,
.rp-card:focus .rp-excerpt { max-height: 80px; opacity: 1; }
.rp-arrow { display: inline-flex; align-items: center; gap: 7px; font-size: .8rem; font-weight: 700; letter-spacing: .06em; text-transform: uppercase; color: var(--cs-dark-color); transform: translateX(-6px); opacity: 0; transition: transform var(--transition), opacity var(--transition); }
.rp-arrow svg { width: 16px; height: 16px; flex-shrink: 0; transition: transform var(--transition); }
.rp-card:hover .rp-arrow,
.rp-card:focus .rp-arrow { transform: translateX(0); opacity: 1; }
.rp-card:hover .rp-arrow svg { transform: translateX(4px); }
.rp-no-image { position: absolute; inset: 0; background: linear-gradient(135deg,#2a0a1e,#1a0515); display: flex; align-items: center; justify-content: center; }
.rp-no-image svg { width: 48px; height: 48px; opacity: .25; color: var(--cs-dark-color); }

/* ─── RESPONSIVE ─────────────────────────────────────────── */
@media (max-width: 991px) {
    :root { --section-py: 64px; }
    .overview-grid { grid-template-columns: repeat(2,1fr); }
    .tech-row { grid-template-columns: 52px 1fr; grid-template-rows: auto auto; }
    .tech-title { grid-column: 2; }
    .tech-desc  { grid-column: 1/-1; }
    .heroSection__image { margin-top: 40px; }
    .rp-grid { grid-template-columns: repeat(2,1fr); }
    .rp-card { min-height: 300px; }
}

@media (max-width: 767px) {
    :root { --section-py: 48px; }
    .overview-grid { grid-template-columns: 1fr 1fr; }
    .tech-row { padding: 18px 20px; gap: 14px; }
    .heroSection h1 { font-size: 2rem; }

    /* Challenges & Solutions mobile */
    .cs-mobile-header { padding: 14px 20px; font-weight: 700; font-size: .78rem; letter-spacing: .12em; text-transform: uppercase; }
    .cs-data-cell { border-right: none; border-bottom: 1px solid #e0e0e0; padding: 20px; }
    .cs-data-cell:last-child { border-bottom: none; }
    .cs-number { width: 28px; height: 28px; font-size: .85rem; }
}

@media (max-width: 600px) {
    .rp-section { padding: 60px 0 70px; }
    .rp-grid { grid-template-columns: 1fr; gap: 20px; }
    .rp-card { min-height: 260px; }
    .rp-excerpt { max-height: 80px; opacity: 1; }
    .rp-arrow   { transform: translateX(0); opacity: 1; }
    .rp-tag     { transform: translateY(0); opacity: 1; }
}

@media (max-width: 480px) {
    .overview-grid { grid-template-columns: 1fr; }
}

@media (prefers-reduced-motion: reduce) {
    .reveal, .heroSection__image, .card-lift,
    .rp-card, .rp-tag, .rp-excerpt, .rp-arrow, .rp-img-wrap img
    { animation: none !important; transition: none !important; }
    .reveal { opacity: 1; transform: none; }
    .rp-card { opacity: 1; transform: none; }
}