/* ============================================================
   V-FIX PROJECT WEBSITE — SECTIONS STYLES
   ============================================================ */

/* ── ABOUT ─────────────────────────────────────────────────── */
#about {
  padding:100px var(--pad);
  background:var(--bg-dark);
  position:relative; overflow:hidden;
}
#about::before {
  content:''; position:absolute; top:-200px; right:-200px;
  width:500px; height:500px; border-radius:50%;
  background:radial-gradient(circle, rgba(229,57,53,.08) 0%, transparent 70%);
  pointer-events:none;
}
.about-grid {
  max-width:var(--content-max); margin:0 auto;
  display:grid; grid-template-columns:1fr 1.05fr; gap:70px; align-items:center;
}
.about-visual { padding-left:clamp(0px,2vw,32px); }
.about-text .section-desc { margin-bottom:28px; }
.quote-block {
  border-left:2px solid var(--accent-red);
  padding:16px 24px; margin:28px 0;
  background:rgba(229,57,53,.04); border-radius:0 8px 8px 0;
}
.quote-text {
  font-size:16px; color:var(--text-primary); font-style:italic; line-height:1.7;
}
.about-chips { display:flex; flex-wrap:wrap; gap:10px; margin-top:24px; }
.chip {
  font-family:var(--font-mono); font-size:10px;
  color:var(--accent-red-light); text-transform:uppercase; letter-spacing:.8px;
  padding:6px 14px; border:1px solid var(--border-red); border-radius:100px;
  background:rgba(229,57,53,.07);
}

/* terminal card */
.terminal-card {
  background:rgba(0,0,0,.75); border:1px solid var(--border-main);
  border-radius:16px; overflow:hidden;
  box-shadow:0 24px 64px rgba(0,0,0,.5);
}
.terminal-bar {
  display:flex; align-items:center; gap:8px;
  padding:12px 18px; background:rgba(255,255,255,.03);
  border-bottom:1px solid var(--border-subtle);
}
.t-dot { width:11px; height:11px; border-radius:50%; }
.t-dot.r{background:#ff5f57;} .t-dot.y{background:#febc2e;} .t-dot.g{background:#28c840;}
.t-title { flex:1; text-align:center; font-family:var(--font-mono); font-size:11px; color:var(--text-subtle); }
.terminal-body { padding:24px; font-family:var(--font-mono); font-size:13px; line-height:2; }
.t-line { opacity:0; transform:translateY(6px); animation:typeIn .4s ease forwards; }
.t-line:nth-child(1){animation-delay:.2s;}
.t-line:nth-child(2){animation-delay:.6s;}
.t-line:nth-child(3){animation-delay:1s;}
.t-line:nth-child(4){animation-delay:1.4s;}
.t-line:nth-child(5){animation-delay:1.8s;}
.t-line:nth-child(6){animation-delay:2.2s;}
.t-line:nth-child(7){animation-delay:2.6s;}
.t-line:nth-child(8){animation-delay:3s;}
@keyframes typeIn { to{ opacity:1; transform:none; } }
.t-prompt{color:var(--accent-red);}
.t-cmd{color:var(--text-primary);}
.t-res{color:var(--text-secondary); padding-left:16px;}
.t-ok{color:var(--accent-green);}
.t-cursor{display:inline-block;width:8px;height:14px;background:var(--accent-red);animation:blink 1s infinite;vertical-align:text-bottom;}
@keyframes blink{0%,50%{opacity:1;}51%,100%{opacity:0;}}

@media(max-width:900px){ .about-grid{grid-template-columns:1fr;} }

/* ── FEATURES ──────────────────────────────────────────────── */
#features { padding:100px var(--pad); background:rgba(255,255,255,.01); }
.features-inner { max-width:var(--content-max); margin:0 auto; }
.features-header { text-align:center; margin-bottom:48px; }
.features-header .section-desc { margin:0 auto; }

/* tab switcher */
.tab-switch {
  display:inline-flex; align-items:center;
  background:rgba(255,255,255,.04); border:1px solid var(--border-subtle);
  border-radius:12px; padding:4px; margin:0 auto 48px; display:flex;
  max-width:420px;
}
.tab-btn {
  flex:1; padding:10px 20px; border-radius:9px;
  font-family:var(--font-mono); font-size:11px; font-weight:600;
  text-transform:uppercase; letter-spacing:.8px; cursor:pointer;
  border:none; background:transparent; color:var(--text-subtle);
  transition:.25s;
}
.tab-btn.active {
  background:var(--accent-red);
  color:#fff;
  box-shadow:0 4px 16px rgba(229,57,53,.35);
}

.features-grid {
  display:grid; grid-template-columns:repeat(3,1fr); gap:20px;
}
.feature-card {
  background:var(--bg-card);
  border:1px solid var(--border-subtle);
  border-radius:16px; padding:28px;
  transition:transform .3s, border-color .3s, box-shadow .3s;
  cursor:default;
}
.feature-card:hover {
  transform:translateY(-6px);
  border-color:var(--border-red);
  box-shadow:0 16px 48px rgba(229,57,53,.12);
}
.feature-icon-wrap {
  width:52px; height:52px; border-radius:14px;
  background:rgba(229,57,53,.1); border:1px solid var(--border-red);
  display:flex; align-items:center; justify-content:center;
  margin-bottom:18px;
}
.feature-icon-wrap svg { width:26px; height:26px; stroke:var(--accent-red); fill:none; stroke-width:1.8; }
.feature-title {
  font-family:var(--font-display); font-size:17px; font-weight:600;
  color:var(--text-primary); margin-bottom:8px;
}
.feature-desc { font-size:14px; color:var(--text-secondary); line-height:1.65; }

/* panel display */
.features-panel { display:none; }
.features-panel.active { display:block; }

@media(max-width:900px){ .features-grid{grid-template-columns:1fr 1fr;} }
@media(max-width:560px){ .features-grid{grid-template-columns:1fr;} }

/* ── HOW IT WORKS ──────────────────────────────────────────── */
#how {
  padding:100px var(--pad);
  background:linear-gradient(180deg, rgba(229,57,53,.04) 0%, transparent 100%);
}
.how-inner { max-width:var(--content-max); margin:0 auto; }
.how-header { text-align:center; margin-bottom:60px; }
.steps-flow {
  display:grid; grid-template-columns:repeat(4,1fr); gap:0;
  position:relative;
}
.steps-flow::before {
  content:''; position:absolute; top:34px; left:calc(12.5% + 26px); right:calc(12.5% + 26px);
  height:2px;
  background:linear-gradient(90deg, var(--accent-red) 0%, rgba(229,57,53,.2) 100%);
}
.step-item { text-align:center; padding:0 20px; position:relative; }
.step-num {
  width:52px; height:52px; border-radius:50%;
  background:linear-gradient(135deg,var(--accent-red),var(--accent-red-dark));
  color:#fff; font-family:var(--font-display); font-size:20px; font-weight:700;
  display:flex; align-items:center; justify-content:center;
  margin:0 auto 20px; position:relative; z-index:1;
  box-shadow:0 6px 24px rgba(229,57,53,.4);
}
.step-icon-wrap {
  font-size:28px; margin-bottom:16px;
}
.step-title {
  font-family:var(--font-display); font-size:16px; font-weight:600;
  color:var(--text-primary); margin-bottom:8px;
}
.step-desc { font-size:13px; color:var(--text-secondary); line-height:1.6; }

@media(max-width:700px){
  .steps-flow{grid-template-columns:1fr 1fr; gap:40px;}
  .steps-flow::before{display:none;}
}
@media(max-width:420px){ .steps-flow{grid-template-columns:1fr;} }

/* ── ARCHITECTURE ──────────────────────────────────────────── */
#architecture { padding:100px var(--pad); background:var(--bg-dark); }
.arch-inner { max-width:var(--content-max); margin:0 auto; }
.arch-header { margin-bottom:50px; }
.arch-img-wrap {
  border:1px solid var(--border-main); border-radius:20px;
  overflow:hidden; margin-bottom:40px;
  background:rgba(255,255,255,.02);
  box-shadow:0 24px 64px rgba(0,0,0,.4);
}
.arch-img-wrap img { width:100%; height:auto; display:block; }

/* sub-images row */
.arch-sub-row { display:grid; grid-template-columns:1fr 1fr; gap:20px; margin-bottom:40px; }
.arch-sub-wrap {
  border:1px solid var(--border-subtle); border-radius:14px;
  overflow:hidden; background:rgba(255,255,255,.02);
  transition:border-color .3s;
}
.arch-sub-wrap:hover { border-color:var(--border-red); }
.arch-sub-wrap img { width:100%; height:auto; }

/* comparison table */
.comparison-table {
  width:100%; border-collapse:collapse;
  font-size:14px;
  border-radius:12px; overflow:hidden;
  border:1px solid var(--border-subtle);
}
.comparison-table th {
  background:rgba(229,57,53,.12);
  color:var(--text-primary); font-family:var(--font-display);
  font-size:15px; font-weight:600;
  padding:16px 20px; text-align:left;
  border-bottom:1px solid var(--border-red);
}
.comparison-table td {
  padding:14px 20px; color:var(--text-secondary);
  border-bottom:1px solid var(--border-subtle);
  vertical-align:top;
}
.comparison-table tr:last-child td { border-bottom:none; }
.comparison-table tr:hover td { background:rgba(255,255,255,.02); }
.badge-vfix {
  display:inline-flex; align-items:center; gap:5px;
  color:var(--accent-green); font-weight:600;
}
.badge-vfix::before { content:'✓'; }
.badge-limited { color:var(--text-subtle); }

.table-responsive {
  width: 100%;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  margin-bottom: 24px;
  padding-bottom: 8px;
}
/* Premium Scrollbar */
.table-responsive::-webkit-scrollbar { height: 4px; }
.table-responsive::-webkit-scrollbar-track { background: rgba(255,255,255,0.02); border-radius: 10px; }
.table-responsive::-webkit-scrollbar-thumb { background: var(--accent-red); border-radius: 10px; }

/* Ensure table min-width prevents crushing columns while not being excessively wide */
.comparison-table { min-width: 600px; }

/* ── DEMO ──────────────────────────────────────────────────── */
#demo { padding:100px var(--pad); background:rgba(255,255,255,.01); }
.demo-inner { max-width:var(--content-max); margin:0 auto; }
.demo-header { text-align:center; margin-bottom:48px; }

/* featured video */
.demo-featured {
  margin-bottom:40px;
  background:rgba(0,0,0,.6); border:1px solid var(--border-main);
  border-radius:20px; overflow:hidden;
  box-shadow:0 24px 64px rgba(0,0,0,.5);
}
.demo-featured video { width:100%; display:block; max-height:60vh; object-fit:contain; background:#000; }
.demo-featured-label {
  padding:14px 20px; background:rgba(229,57,53,.08);
  border-top:1px solid var(--border-red);
  font-family:var(--font-mono); font-size:11px; color:var(--accent-red-light);
  letter-spacing:.8px; text-transform:uppercase;
}

/* video grid */
.demo-grid { display:grid; grid-template-columns:repeat(3,1fr); gap:16px; }
.demo-grid-3 { grid-template-columns:repeat(3,1fr); }
.demo-grid-4 { grid-template-columns:repeat(4,1fr); }

/* demo sub-group label — mirrors .gallery-group-label */
.demo-group-label {
  display:inline-flex; align-items:center; gap:10px;
  font-family:var(--font-mono); font-size:10px; color:var(--accent-red);
  text-transform:uppercase; letter-spacing:1.5px;
  margin:24px 0 16px;
  padding:5px 14px;
  background:rgba(229,57,53,.08); border:1px solid var(--border-red);
  border-radius:100px;
}
.demo-group-label::before { content:''; width:16px; height:1px; background:var(--accent-red); }
.demo-card {
  background:rgba(0,0,0,.5); border:1px solid var(--border-subtle);
  border-radius:14px; overflow:hidden; cursor:pointer;
  transition:border-color .3s, transform .3s;
}
.demo-card:hover { border-color:var(--border-red); transform:translateY(-4px); }
.demo-card video { width:100%; height:160px; object-fit:cover; display:block; pointer-events:none; }
.demo-card-label {
  padding:12px 16px;
  font-family:var(--font-mono); font-size:10px; color:var(--text-subtle);
  text-transform:uppercase; letter-spacing:.8px;
}

/* modal */
.video-modal {
  display:none; position:fixed; inset:0; z-index:500;
  background:rgba(0,0,0,.9); align-items:center; justify-content:center;
  padding:20px;
}
.video-modal.open { display:flex; }
.video-modal-inner {
  position:relative; width:100%; max-width:900px;
  background:#000; border-radius:16px; overflow:hidden;
  border:1px solid var(--border-main);
}
.video-modal video { width:100%; max-height:75vh; display:block; }
.modal-close {
  position:absolute; top:12px; right:12px; z-index:5;
  width:36px; height:36px; border-radius:50%;
  background:rgba(0,0,0,.7); border:1px solid var(--border-main);
  color:#fff; font-size:18px; cursor:pointer;
  display:flex; align-items:center; justify-content:center;
  transition:background .2s;
}
.modal-close:hover { background:var(--accent-red); }

@media(max-width:900px){ .demo-grid-4{ grid-template-columns:repeat(2,1fr); } }
@media(max-width:700px){ .demo-grid-3,.demo-grid-4{ grid-template-columns:1fr; } }

/* ── TECH STACK ────────────────────────────────────────────── */
#tech { padding:100px var(--pad); background:var(--bg-dark); }
.tech-inner { max-width:var(--content-max); margin:0 auto; }
.tech-header { text-align:center; margin-bottom:50px; }
.tech-grid {
  display:flex; flex-wrap:wrap; justify-content:center; gap:16px;
}
.tech-card {
  background:var(--bg-card); border:1px solid var(--border-subtle);
  border-radius:14px; padding:20px 12px;
  width:130px;
  display:flex; flex-direction:column; align-items:center; gap:12px;
  transition:transform .25s, border-color .25s, box-shadow .25s;
  cursor:default;
}
.tech-card:hover {
  transform:translateY(-6px);
  border-color:var(--border-red);
  box-shadow:0 12px 32px rgba(229,57,53,.12);
}
.tech-icon { font-size:34px; line-height:1; }
.tech-name {
  font-family:var(--font-mono); font-size:10px; color:var(--text-subtle);
  text-transform:uppercase; letter-spacing:.8px; text-align:center;
}

/* ── GALLERY ───────────────────────────────────────────────── */
#gallery { padding:100px var(--pad); background:rgba(255,255,255,.01); }
.gallery-inner { max-width:var(--content-max); margin:0 auto; }
.gallery-header { text-align:center; margin-bottom:50px; }
.gallery-grid {
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:14px;
}
.gallery-item {
  border-radius:14px; overflow:hidden;
  border:1px solid var(--border-subtle);
  cursor:pointer; position:relative;
  background:rgba(255,255,255,.02);
  transition:transform .3s, border-color .3s;
}
.gallery-item:hover { transform:scale(1.02); border-color:var(--border-red); }
.gallery-item img { width:100%; height:200px; object-fit:cover; display:block; }
.gallery-item-caption {
  position:absolute; bottom:0; left:0; right:0;
  background:linear-gradient(transparent,rgba(0,0,0,.8));
  padding:24px 14px 12px;
  font-family:var(--font-mono); font-size:9px; color:rgba(255,255,255,.7);
  text-transform:uppercase; letter-spacing:.8px;
  transform:translateY(100%);
  transition:transform .3s;
}
.gallery-item:hover .gallery-item-caption { transform:none; }

/* lightbox */
/* LIGHTBOX OVERHAUL */
.lightbox {
  display:none; position:fixed; inset:0; z-index:1500;
  background:rgba(0,0,0,.95); align-items:center; justify-content:center;
  gap:16px; padding:20px;
}
.lightbox.open { display:flex; }
.lightbox-content-wrap {
  display:flex; flex-direction:column; gap:12px;
  max-width:90vw; max-height:90vh; width:100%; align-items:center;
}
.lightbox-top-bar {
  display:flex; justify-content:space-between; align-items:center;
  font-family:var(--font-mono); font-size:12px; color:var(--text-subtle);
  width:100%; max-width:1200px;
}
#lightbox-title { color:var(--text-primary); font-weight:600; font-family:var(--font-display); }
.lightbox-content-wrap img {
  max-height:75vh; max-width:100%; object-fit:contain; border-radius:10px;
  background:#000; box-shadow:0 12px 40px rgba(0,0,0,.5);
}
.lightbox-caption {
  font-family:var(--font-mono); font-size:13px; color:rgba(255,255,255,.8);
  text-align:center; margin-top:4px;
}
.lightbox-nav {
  background:rgba(255,255,255,.08); border:1px solid var(--border-main);
  color:#fff; font-size:24px; width:48px; height:48px; border-radius:50%;
  cursor:pointer; display:flex; align-items:center; justify-content:center;
  transition:background .2s, border-color .2s; flex-shrink:0;
}
@media(max-width:768px){ .lightbox-nav { position:absolute; top:50%; transform:translateY(-50%); z-index:100; width:40px; height:40px; font-size:20px; background:rgba(0,0,0,0.5); } #lightbox-prev { left:10px; } #lightbox-next { right:10px; } }
.lightbox-nav:hover { background:var(--accent-red); border-color:var(--accent-red); }
.lightbox-nav.hidden { display:none !important; }
.lightbox-close {
  position:absolute; top:20px; right:20px; z-index:100;
  width:40px; height:40px; border-radius:50%;
  background:rgba(255,255,255,.1); border:1px solid var(--border-main);
  color:#fff; font-size:24px; display:flex; align-items:center; justify-content:center;
  cursor:pointer; transition:background .2s;
}
.lightbox-close:hover { background:var(--accent-red); }

@media(max-width:700px){ .gallery-grid{grid-template-columns:1fr 1fr;} }
@media(max-width:450px){ .gallery-grid{grid-template-columns:1fr;} }

/* ── TEAM ──────────────────────────────────────────────────── */
#team { padding:100px var(--pad); background:var(--bg-dark); }
.team-inner { max-width:var(--content-max); margin:0 auto; }
.team-header { text-align:center; margin-bottom:56px; }
.team-members {
  display:grid; grid-template-columns:repeat(5,1fr); gap:18px; margin-bottom:32px;
}
.team-advisor { display:flex; justify-content:center; }
.team-card {
  background:var(--bg-card); border:1px solid var(--border-subtle);
  border-radius:18px; padding:28px 20px; text-align:center;
  transition:transform .15s ease, border-color .25s, box-shadow .25s;
  cursor:default;
  transform-style:preserve-3d;
  container-type: inline-size;
}
.team-card:hover {
  border-color:var(--border-red);
  box-shadow:0 18px 52px rgba(229,57,53,.15);
}
.team-avatar {
  width:80px; height:80px; border-radius:50%;
  margin:0 auto 16px;
  background:rgba(229,57,53,.1); border:2px solid var(--border-red);
  display:flex; align-items:center; justify-content:center;
  overflow:hidden;
}
.team-avatar img { width:100%; height:100%; object-fit:cover; }
.team-avatar .placeholder-icon { font-size:32px; }
.team-name {
  font-family:var(--font-display); font-size:15px; font-weight:600;
  color:var(--text-primary); margin-bottom:4px;
}
.team-role {
  font-family:var(--font-mono); font-size:10px; color:var(--accent-red);
  text-transform:uppercase; letter-spacing:.8px; margin-bottom:10px;
}
.team-email {
  font-family:var(--font-mono); font-size:clamp(7px, 5.5cqw, 10px); color:var(--text-subtle);
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.advisor-card { max-width:280px; width:100%; }
.advisor-badge {
  display:inline-block;
  font-family:var(--font-mono); font-size:9px;
  color:var(--accent-red-light); text-transform:uppercase; letter-spacing:1px;
  border:1px solid var(--border-red); border-radius:100px; padding:3px 10px;
  margin-bottom:12px;
}

@media(max-width:1000px){ .team-members{grid-template-columns:repeat(3,1fr);} }
@media(max-width:650px){  .team-members{grid-template-columns:1fr 1fr;} }
@media(max-width:400px){  .team-members{grid-template-columns:1fr;} }

/* ── CONTACT + QR ──────────────────────────────────────────── */
#contact { padding:100px var(--pad); background:rgba(255,255,255,.01); }
.contact-inner { max-width:var(--content-max); margin:0 auto; }
.contact-header { text-align:center; margin-bottom:60px; }
.contact-grid {
  display:grid; grid-template-columns:1fr 1fr; gap:60px; align-items:start;
}
.contact-info-list { display:flex; flex-direction:column; gap:24px; }
.contact-row { display:flex; align-items:flex-start; gap:16px; }
.contact-icon-wrap {
  width:44px; height:44px; border-radius:12px; flex-shrink:0;
  background:rgba(229,57,53,.1); border:1px solid var(--border-red);
  display:flex; align-items:center; justify-content:center;
}
.contact-icon-wrap svg { width:20px; height:20px; stroke:var(--accent-red); fill:none; stroke-width:1.8; }
.contact-text h4 {
  font-family:var(--font-display); font-size:16px; font-weight:600;
  color:var(--text-primary); margin-bottom:4px;
}
.contact-text p, .contact-text a {
  font-size:14px; color:var(--text-secondary); line-height:1.6;
  transition:color .2s;
}
.contact-text a:hover { color:var(--accent-red-light); }

/* qr section */
.qr-section { display:flex; flex-direction:column; gap:24px; }
.qr-row { display:grid; grid-template-columns:1fr 1fr; gap:16px; }
.qr-card {
  background:var(--bg-card); border:1px solid var(--border-subtle);
  border-radius:16px; padding:20px; text-align:center;
  transition:border-color .3s;
}
.qr-card:hover { border-color:var(--border-red); }
.qr-card img { width:130px; height:130px; object-fit:contain; margin:0 auto 12px; border-radius:8px; }
.qr-label {
  font-family:var(--font-mono); font-size:10px; color:var(--text-subtle);
  text-transform:uppercase; letter-spacing:.8px;
}

@media(max-width:860px){ .contact-grid{grid-template-columns:1fr;} }

/* ── FOOTER ────────────────────────────────────────────────── */
#footer {
  border-top:1px solid var(--border-subtle);
  padding:50px var(--pad) 30px;
  background:rgba(0,0,0,.4);
}
.footer-inner { max-width:var(--content-max); margin:0 auto; }
.footer-top {
  display:flex; align-items:center; justify-content:space-between;
  flex-wrap:wrap; gap:24px; margin-bottom:36px;
  padding-bottom:36px; border-bottom:1px solid var(--border-subtle);
}
.footer-logos { display:flex; align-items:center; gap:20px; flex-wrap:wrap; }
.footer-logos img { height:48px; width:auto; object-fit:contain; opacity:.85; transition:opacity .2s; }
.footer-logos img:hover { opacity:1; }
.footer-sep { width:1px; height:40px; background:var(--border-subtle); }
.footer-nav { display:flex; flex-wrap:wrap; gap:8px 20px; }
.footer-nav a {
  font-family:var(--font-mono); font-size:11px; color:var(--text-subtle);
  text-transform:uppercase; letter-spacing:.8px; transition:color .2s;
}
.footer-nav a:hover { color:var(--accent-red-light); }
.footer-bottom {
  display:flex; align-items:center; justify-content:space-between;
  flex-wrap:wrap; gap:16px;
}
.footer-copy {
  font-family:var(--font-mono); font-size:11px; color:var(--text-subtle);
}
.footer-project {
  font-family:var(--font-mono); font-size:11px; color:var(--text-subtle);
  text-align:right;
}
.footer-project span { color:var(--accent-red); }

/* ── HERO WATERMARK COVER ──────────────────────────────────── */
.hero-watermark-cover {
  position:absolute; bottom:0; left:0; right:0; height:35%;
  background:linear-gradient(transparent, rgba(10,10,11,.92));
  pointer-events:none; z-index:1;
}
/* Extra vignette on sides for depth */
#hero::before {
  content:''; position:absolute; inset:0; z-index:1; pointer-events:none;
  background:radial-gradient(ellipse at center, transparent 40%, rgba(10,10,11,.6) 100%);
}

/* ── DEMO CARD COVERS ──────────────────────────────────────── */
.demo-card { position:relative; overflow:hidden; }
.demo-card-cover {
  position:absolute; inset:0; z-index:5;
  background:linear-gradient(135deg, rgba(10,10,11,.9) 0%, rgba(30,10,10,.85) 100%);
  display:flex; flex-direction:column;
  align-items:center; justify-content:center; gap:8px;
  border-bottom:none;
  transition:opacity .3s;
}
.demo-card.playing .demo-card-cover { opacity:0; pointer-events:none; }
.demo-card-cover-icon {
  font-size:32px;
  width:56px; height:56px; border-radius:50%;
  background:rgba(229,57,53,.2); border:2px solid var(--border-red);
  display:flex; align-items:center; justify-content:center;
  margin-bottom:4px;
  transition:background .25s, transform .25s;
}
.demo-card:hover .demo-card-cover-icon {
  background:rgba(229,57,53,.4); transform:scale(1.1);
}
.demo-card-cover-title {
  font-family:var(--font-display); font-size:15px; font-weight:600;
  color:var(--text-primary);
}
.demo-card-cover-sub {
  font-family:var(--font-mono); font-size:10px; color:var(--text-subtle);
  text-transform:uppercase; letter-spacing:.8px;
}
/* hide the raw video in card (cover shows instead) */
.demo-card > video { pointer-events:none; }

/* ── YOUTUBE PLACEHOLDER ───────────────────────────────────── */
.yt-section { max-width:860px; margin:0 auto; }
.yt-label { text-align:center; margin-bottom:0; }
.yt-embed-wrap {
  width:100%; aspect-ratio:16/9;
  border-radius:18px; overflow:hidden;
  border:1px solid var(--border-main);
  box-shadow:0 24px 64px rgba(0,0,0,.5);
  background:#000;
}
.yt-placeholder {
  width:100%; height:100%;
  display:flex; flex-direction:column;
  align-items:center; justify-content:center; gap:12px;
  background:linear-gradient(135deg, rgba(20,5,5,.95) 0%, rgba(10,10,11,.98) 100%);
  border:2px dashed var(--border-red);
  padding:32px; text-align:center;
}
.yt-placeholder-icon { font-size:48px; }
.yt-placeholder-text {
  font-family:var(--font-display); font-size:18px; font-weight:600;
  color:var(--text-primary);
}
.yt-placeholder-sub {
  font-size:12px; color:var(--text-subtle); line-height:1.8;
}
.yt-placeholder-sub code {
  font-family:var(--font-mono); font-size:11px;
  color:var(--accent-red-light); background:rgba(229,57,53,.1);
  padding:4px 8px; border-radius:4px; display:inline-block; margin-top:8px;
  word-break:break-all;
}

/* ── QR LINK STYLE ─────────────────────────────────────────── */
.qr-link {
  display:block; text-align:center;
  font-family:var(--font-mono); font-size:10px;
  color:var(--accent-red-light);
  margin:6px 0 4px;
  transition:color .2s;
  word-break:break-all;
}
.qr-link:hover { color:var(--text-primary); text-decoration:underline; }

/* ── GALLERY GROUPS ────────────────────────────────────────── */
.gallery-group { margin-bottom:48px; }
.gallery-group:last-child { margin-bottom:0; }
.gallery-group-label {
  display:inline-flex; align-items:center; gap:10px;
  font-family:var(--font-mono); font-size:10px; color:var(--accent-red);
  text-transform:uppercase; letter-spacing:1.5px;
  margin-bottom:16px;
  padding:5px 14px;
  background:rgba(229,57,53,.08); border:1px solid var(--border-red);
  border-radius:100px;
}
.gallery-group-label::before { content:''; width:16px; height:1px; background:var(--accent-red); }

/* ── ARCHITECTURE SVG DIAGRAM ──────────────────────────────── */
#arch-diagram-svg {
  width:100%; overflow:visible;
  margin-bottom:40px;
}
#arch-diagram-svg svg { width:100%; height:auto; display:block; }
/* ── ARCH-SUB-WRAP WITH LIGHTBOX HOVER ─────────────────────── */
.arch-sub-wrap { position:relative; overflow:hidden; }
.arch-sub-wrap .gallery-item-caption {
  opacity:0; transition:opacity .3s;
  background:rgba(0,0,0,.7); color:rgba(255,255,255,.8);
  font-family:var(--font-mono); font-size:10px; padding:6px 10px;
}
.arch-sub-wrap:hover .gallery-item-caption { opacity:1; }
.arch-sub-wrap::after {
  content:'🔍 Enlarge'; position:absolute; top:10px; right:10px;
  font-family:var(--font-mono); font-size:9px; color:var(--accent-red);
  background:rgba(0,0,0,.7); padding:4px 8px; border-radius:4px;
  opacity:0; transition:opacity .3s; pointer-events:none;
}
.arch-sub-wrap:hover::after { opacity:1; }

/* ── RAG PIPELINE DIAGRAM ───────────────────────────────────── */
.rag-diagram-section {
  margin-bottom: 40px;
}
.rag-diagram-label {
  display: inline-flex; align-items: center; gap: 10px;
  font-family: var(--font-mono); font-size: 10px; color: var(--accent-red);
  text-transform: uppercase; letter-spacing: 1.5px;
  margin-bottom: 16px;
  padding: 5px 14px;
  background: rgba(229,57,53,.08); border: 1px solid var(--border-red);
  border-radius: 100px;
}
.rag-diagram-wrap {
  border: 1px solid var(--border-main); border-radius: 20px;
  overflow: hidden; background: rgba(255,255,255,.02);
  box-shadow: 0 24px 64px rgba(0,0,0,.4);
  padding: 20px;
}
.rag-diagram-wrap svg {
  width: 100%; height: auto; display: block;
  overflow: visible;
}


.arch-sub-wrap {
  position: relative; overflow: hidden;
  border-radius: 12px; border: 1px solid var(--border-main);
  background: rgba(0,0,0,.3);
}
.arch-sub-wrap img {
  width: 100%; height: auto;
  object-fit: contain; display: block;
}

/* ── CYCLIC GALLERY STACKS ──────────────────────────────────── */
.gallery-group { margin-bottom:52px; }
.gallery-group:last-child { margin-bottom:0; }
.gallery-cycle {
  position:relative; height:260px; cursor:pointer;
  user-select:none;
}
.cycle-card {
  position:absolute; inset:0;
  border-radius:14px; overflow:hidden;
  border:1px solid var(--border-main);
  background:var(--bg-card);
  transition:transform .45s cubic-bezier(.34,1.56,.64,1),
             filter .45s ease,
             z-index 0s;
  will-change:transform;
}
.cycle-card img {
  width:100%; height:100%; object-fit:cover; display:block;
  pointer-events:none;
}
.cycle-card .cycle-cap {
  position:absolute; bottom:0; left:0; right:0;
  background:rgba(0,0,0,.65); backdrop-filter:blur(4px);
  font-family:var(--font-mono); font-size:10px;
  color:rgba(255,255,255,.8); padding:6px 12px;
  opacity:0; transition:opacity .25s;
}
/* Position by data-pos — updated by JS */
.cycle-card[data-pos="0"] { z-index:10; transform:rotate(0deg) translateY(0);   filter:brightness(1);    border-color:var(--border-red); box-shadow:0 18px 50px rgba(0,0,0,.55); }
.cycle-card[data-pos="0"] .cycle-cap { opacity:1; }
.cycle-card[data-pos="1"] { z-index:9;  transform:rotate(2.5deg) translateY(10px) scale(.97); filter:brightness(.72); }
.cycle-card[data-pos="2"] { z-index:8;  transform:rotate(5deg)   translateY(20px) scale(.94); filter:brightness(.50); }
.cycle-card[data-pos="3"] { z-index:7;  transform:rotate(7deg)   translateY(28px) scale(.91); filter:brightness(.35); }
.gallery-cycle:hover .cycle-card[data-pos="0"] { transform:rotate(0deg) translateY(-6px) scale(1.02); }

.cycle-badge {
  position:absolute; bottom:-34px; left:50%; transform:translateX(-50%);
  font-family:var(--font-mono); font-size:10px; color:var(--accent-red);
  background:rgba(229,57,53,.1); border:1px solid var(--border-red);
  padding:4px 14px; border-radius:100px; white-space:nowrap;
  pointer-events:none;
}

/* ── COMPACT GALLERY ROW ────────────────────────────────────── */
.gcycle-row {
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:20px;
  margin-top:36px;
}
@media(max-width:900px){ .gcycle-row{ grid-template-columns:repeat(2,1fr); } }
@media(max-width:500px){ .gcycle-row{ grid-template-columns:1fr; } }

.gcycle-card {
  border-radius:14px; overflow:hidden;
  border:1px solid var(--border-main);
  background:var(--bg-card);
  cursor:pointer;
  transition:border-color .25s, transform .25s, box-shadow .25s;
}
.gcycle-card:hover {
  border-color:var(--border-red);
  transform:translateY(-4px);
  box-shadow:0 12px 40px rgba(229,57,53,.18);
}
.gcycle-img-wrap {
  position:relative;
  background:#000;
  overflow:hidden;
  aspect-ratio:16/10;
}
.gcycle-img-wrap img {
  width:100%; height:100%;
  display:block;
  object-fit:contain;
  transition:transform .35s;
  cursor:zoom-in;
}
.gcycle-card:hover .gcycle-img-wrap img { transform:scale(1.03); }

.gcycle-overlay {
  position:absolute; top:10px; right:10px;
  display:flex; align-items:center; justify-content:center;
  opacity:0; transition:opacity .25s; pointer-events:none;
}
.gcycle-overlay span {
  font-family:var(--font-mono); font-size:10px;
  color:#fff; background:rgba(0,0,0,0.7);
  padding:4px 10px; border-radius:6px;
  border:1px solid rgba(255,255,255,0.2);
}
.gcycle-card:hover .gcycle-overlay { opacity:1; }

.gcycle-footer {
  display:flex; align-items:center; justify-content:space-between;
  padding:12px 14px;
  border-top:1px solid var(--border-main);
  background:var(--bg-card);
}
.gcycle-footer.clickable {
  cursor:pointer;
  transition:background .2s;
}
.gcycle-footer.clickable:hover {
  background:rgba(229,57,53,0.08);
}
.gcycle-label {
  font-family:var(--font-display); font-size:12px; font-weight:600;
  color:var(--text-primary);
}
.gcycle-count-wrap {
  display:flex; flex-direction:column; align-items:flex-end; gap:2px;
}
.gcycle-count {
  font-family:var(--font-mono); font-size:11px;
  color:var(--accent-red); font-weight:600;
}
.gcycle-hint {
  font-family:var(--font-mono); font-size:9px;
  color:rgba(255,255,255,0.4);
}