/* BuzzKit homepage: interactive 3D category cards. Scoped to .home-3d.
   Uses only site tokens (var(--accent), var(--surface) ...) so light and dark both work.
   Category colors are the fixed Signal Chip set; Image follows the theme accent. */
.home-3d{ --c-video:#E2685D; --c-audio:#C99A3E; --c-pdf:#4C6FE0; --c-image:var(--accent); }
html{ scroll-padding-top:calc(var(--header-h) + 16px); }
.sr-only{ position:absolute; width:1px; height:1px; margin:-1px; padding:0; overflow:hidden; clip:rect(0 0 0 0); white-space:nowrap; border:0; }

/* ---------- hero ---------- */
.hx{ position:relative; padding:52px 0 36px; }
.hx::before{ content:''; position:absolute; left:0; right:0; top:0; height:540px; z-index:-1; pointer-events:none;
  background:radial-gradient(50rem 26rem at 84% 0%, color-mix(in srgb, var(--accent) 11%, transparent), transparent 66%); }
.hx-grid{ display:grid; grid-template-columns:minmax(0,1fr); gap:36px; align-items:center; }
@media (min-width:980px){ .hx-grid{ grid-template-columns:minmax(0,1.08fr) minmax(0,.92fr); gap:44px; } }
.hx h1{ font-size:clamp(28px,3.4vw,40px); line-height:1.08; letter-spacing:-.03em; margin:0 0 16px; }
.hx h1 .accent{ color:var(--accent); }
.hx-sub{ font-size:17px; line-height:1.6; max-width:29em; margin:0 0 26px; }
.hx-search{ display:flex; gap:10px; max-width:540px; }
.hx-field{ position:relative; flex:1; min-width:0; display:block; }
.hx-field svg{ position:absolute; left:14px; top:50%; transform:translateY(-50%); width:18px; height:18px; color:var(--text-faint); fill:none; stroke:currentColor; stroke-width:2; pointer-events:none; }
.hx-field input{ width:100%; padding:12px 14px 12px 42px; border:1px solid var(--border); border-radius:8px; background:var(--surface); color:var(--text); font:500 15px var(--body); box-shadow:var(--shadow); transition:border-color .15s ease, box-shadow .15s ease; }
.hx-field input::placeholder{ color:var(--text-faint); }
.hx-field input:focus{ outline:none; border-color:var(--accent); box-shadow:0 0 0 3px var(--accent-soft); }
.hx .btn{ white-space:nowrap; }

/* ---------- 3D category cards ---------- */
.c3-grid{ display:grid; grid-template-columns:repeat(2,minmax(0,1fr)); gap:14px; }
.c3{ --c:var(--accent); position:relative; display:flex; flex-direction:column; overflow:hidden; border:1px solid var(--border); border-radius:var(--radius-lg); background:var(--surface); box-shadow:var(--shadow);
  transition:border-color .2s ease, box-shadow .25s ease, transform .2s ease; }
.c3:hover, .c3:focus-visible{ border-color:var(--c); box-shadow:var(--shadow), 0 16px 32px -18px color-mix(in srgb, var(--c) 60%, transparent); }
.c3-stage{ position:relative; height:158px; perspective:640px; overflow:hidden;
  background:radial-gradient(ellipse at 50% 78%, color-mix(in srgb, var(--c) 18%, var(--surface)), var(--surface) 72%); }
.c3-stage::before{ content:''; position:absolute; inset:0; opacity:.55; pointer-events:none;
  background:linear-gradient(color-mix(in srgb, var(--border) 70%, transparent) 1px, transparent 1px) 0 0/22px 22px, linear-gradient(90deg, color-mix(in srgb, var(--border) 70%, transparent) 1px, transparent 1px) 0 0/22px 22px;
  -webkit-mask-image:radial-gradient(ellipse at 50% 60%, #000 20%, transparent 74%); mask-image:radial-gradient(ellipse at 50% 60%, #000 20%, transparent 74%); }
.c3-sway{ position:absolute; inset:0; transform-style:preserve-3d; animation:c3-sway 9s ease-in-out infinite alternate; }
.c3:nth-child(2) .c3-sway{ animation-delay:-2.2s; } .c3:nth-child(3) .c3-sway{ animation-delay:-4.4s; } .c3:nth-child(4) .c3-sway{ animation-delay:-6.6s; }
.c3-obj{ position:absolute; left:50%; top:50%; width:0; height:0; transform-style:preserve-3d; scale:var(--s,1); --ex:0px;
  transform:rotateX(calc(-16deg + var(--ry,0deg))) rotateY(calc(-28deg + var(--rx,0deg))); transition:transform .25s ease-out, scale .35s cubic-bezier(.16,1,.3,1); }
.c3:hover .c3-obj, .c3:focus-visible .c3-obj{ --ex:22px; scale:calc(var(--s,1) * 1.06); }
.c3-body{ display:flex; align-items:center; justify-content:space-between; gap:10px; padding:12px 14px 13px; border-top:1px solid var(--border); }
.c3-body b{ display:block; font:700 16px/1.2 var(--display); color:var(--text); }
.c3-body small{ display:block; margin-top:3px; font:500 11.5px var(--mono); color:var(--text-faint); letter-spacing:.02em; }
.c3-body .chip{ background:color-mix(in srgb, var(--c) 14%, var(--surface)); color:var(--text); border-color:color-mix(in srgb, var(--c) 45%, transparent); }

/* Video: a fan of film frames */
.ov-slab{ position:absolute; left:-58px; top:-36px; width:116px; height:72px; border-radius:8px; transform-style:preserve-3d;
  background:linear-gradient(150deg, color-mix(in srgb, var(--c) 92%, white), color-mix(in srgb, var(--c) 68%, black)); box-shadow:inset 0 0 0 1px rgba(255,255,255,.3);
  transform:translate3d(calc(var(--k) * 22px), calc(var(--k) * 14px), calc(var(--k) * 38px - 8px));
  translate:0 0 calc(var(--k) * var(--ex)); transition:translate .4s cubic-bezier(.16,1,.3,1); animation:ov-float 6s ease-in-out infinite; animation-delay:calc(var(--k) * -1.8s); }
.ov-slab:nth-child(1){ opacity:.5; } .ov-slab:nth-child(2){ opacity:.78; }
.ov-slab::before, .ov-slab::after{ content:''; position:absolute; left:7px; right:7px; height:5px; background:radial-gradient(circle, rgba(255,255,255,.75) 1.7px, transparent 2.2px) 0 0/11px 5px repeat-x; }
.ov-slab::before{ top:5px; } .ov-slab::after{ bottom:5px; }
.ov-slab b{ position:absolute; left:50%; top:50%; margin:-10px 0 0 -6px; border-left:17px solid rgba(255,255,255,.95); border-top:10px solid transparent; border-bottom:10px solid transparent; }

/* Audio: equalizer bars standing on a plate */
.oa-plate{ position:absolute; left:-76px; top:22px; width:152px; height:70px; border-radius:6px; transform:rotateX(90deg); transform-origin:50% 50%;
  background:color-mix(in srgb, var(--c) 16%, var(--surface)); border:1px solid color-mix(in srgb, var(--c) 55%, transparent); }
.oa-bar{ position:absolute; left:calc(-64px + var(--i) * 14.5px); top:-50px; width:11px; height:100px; transform-origin:50% 100%; transform-style:preserve-3d;
  background:linear-gradient(180deg, color-mix(in srgb, var(--c) 92%, white), color-mix(in srgb, var(--c) 78%, black)); animation:oa-eq 1.9s ease-in-out infinite; animation-delay:calc(var(--d) * -1s); transform:scaleY(var(--hi)); }
.oa-bar::before{ content:''; position:absolute; left:100%; top:0; width:11px; height:100%; transform-origin:0 50%; transform:rotateY(90deg); background:color-mix(in srgb, var(--c) 62%, black); }
.oa-bar::after{ content:''; position:absolute; left:0; top:0; width:100%; height:11px; transform-origin:50% 0; transform:rotateX(-90deg); background:color-mix(in srgb, var(--c) 78%, white); }

/* Image: stacked photos that separate on hover */
.oi-photo{ position:absolute; left:-56px; top:-40px; width:112px; height:80px; border-radius:8px; overflow:hidden; border:3px solid var(--surface); box-shadow:0 0 0 1px color-mix(in srgb, var(--c) 55%, var(--border));
  background:linear-gradient(180deg, color-mix(in srgb, var(--c) 30%, var(--surface)), color-mix(in srgb, var(--c) 8%, var(--surface)));
  transform:translate3d(calc(var(--k) * 20px), calc(var(--k) * 12px), calc(var(--k) * 36px - 6px)); translate:0 0 calc(var(--k) * var(--ex));
  transition:translate .4s cubic-bezier(.16,1,.3,1); animation:ov-float 7s ease-in-out infinite; animation-delay:calc(var(--k) * -2.1s); }
.oi-photo:nth-child(1){ opacity:.55; } .oi-photo:nth-child(2){ opacity:.8; }
.oi-photo::before{ content:''; position:absolute; right:15px; top:11px; width:16px; height:16px; border-radius:50%; background:color-mix(in srgb, var(--c) 80%, white); }
.oi-photo::after{ content:''; position:absolute; left:0; right:0; bottom:0; height:46px; background:var(--c); clip-path:polygon(0 100%, 0 72%, 26% 30%, 46% 64%, 68% 16%, 100% 68%, 100% 100%); }

/* PDF: pages fanned out; the front page turns */
.op-page{ position:absolute; left:-38px; top:-50px; width:76px; height:100px; border-radius:5px; background:var(--surface); border:1px solid color-mix(in srgb, var(--c) 60%, var(--border)); transform-style:preserve-3d; transform-origin:0 50%;
  transform:translate3d(calc(var(--k) * 12px), 0, calc(var(--k) * 26px)) rotateZ(calc(var(--k) * -6deg)); translate:0 0 calc(var(--k) * var(--ex)); transition:translate .4s cubic-bezier(.16,1,.3,1); backface-visibility:hidden; }
.op-page::before{ content:''; position:absolute; left:9px; right:9px; top:34px; bottom:12px; background:repeating-linear-gradient(to bottom, color-mix(in srgb, var(--c) 42%, transparent) 0 3px, transparent 3px 9px); }
.op-page::after{ content:''; position:absolute; right:-1px; top:-1px; width:20px; height:20px; border-bottom-left-radius:4px; background:linear-gradient(225deg, var(--surface) 50%, color-mix(in srgb, var(--c) 34%, var(--surface)) 50%); }
.op-page b{ position:absolute; left:9px; top:12px; width:28px; height:10px; border-radius:3px; background:var(--c); }
.op-flip{ animation:op-turn 7s ease-in-out infinite; }

@keyframes c3-sway{ from{ transform:rotateY(-6deg); } to{ transform:rotateY(6deg); } }
@keyframes ov-float{ 0%,100%{ margin-top:0; } 50%{ margin-top:-7px; } }
@keyframes oa-eq{ 0%,100%{ transform:scaleY(var(--lo)); } 50%{ transform:scaleY(var(--hi)); } }
@keyframes op-turn{ 0%,18%{ transform:translate3d(calc(var(--k) * 12px), 0, calc(var(--k) * 26px)) rotateZ(calc(var(--k) * -6deg)) rotateY(0deg); }
  46%,66%{ transform:translate3d(calc(var(--k) * 12px), 0, calc(var(--k) * 26px)) rotateZ(calc(var(--k) * -6deg)) rotateY(-165deg); }
  94%,100%{ transform:translate3d(calc(var(--k) * 12px), 0, calc(var(--k) * 26px)) rotateZ(calc(var(--k) * -6deg)) rotateY(0deg); } }
.c3-grid.is-paused *{ animation-play-state:paused !important; }

/* ---------- trust strip ---------- */
.ts{ border-top:1px solid var(--border); border-bottom:1px solid var(--border); background:color-mix(in srgb, var(--surface) 70%, transparent); }
.ts-in{ display:flex; flex-wrap:wrap; align-items:center; gap:10px; padding-top:16px; padding-bottom:16px; }
.ts-in p{ margin:0 0 0 8px; font-size:14px; }

/* ---------- sections ---------- */
.home-3d .sec{ padding:72px 0 0; }
.sec-head{ max-width:42rem; margin:0 0 28px; }
.sec-head h2{ font-size:clamp(26px,3.2vw,34px); letter-spacing:-.025em; margin:0 0 10px; }
.sec-head p{ font-size:16.5px; margin:0; }
.sec-head .eyebrow{ margin-bottom:10px; }
.rv-ready .rv:not(.in){ opacity:0; transform:translateY(16px); }
.rv{ transition:opacity .55s cubic-bezier(.16,1,.3,1), transform .55s cubic-bezier(.16,1,.3,1); }

.mega-col{ transition:background .2s ease; }
.mega-col.is-hot{ background:color-mix(in srgb, var(--c, var(--accent)) 8%, var(--surface)); }
.mega-col ul a{ display:flex; align-items:center; justify-content:space-between; gap:8px; padding:5px 8px; margin:0 -8px; border-radius:6px; font-size:14px; color:var(--text-dim); }

.tools-head{ display:flex; align-items:flex-end; justify-content:space-between; gap:20px; flex-wrap:wrap; margin-bottom:26px; }
.tools-head .sec-head{ margin:0; }
.fchips{ display:flex; flex-wrap:wrap; gap:8px; }
.fchip{ padding:7px 14px; border-radius:100px; border:1px solid var(--border); background:var(--surface); color:var(--text-dim); font:600 12.5px var(--mono); cursor:pointer; transition:background .15s ease, color .15s ease, border-color .15s ease; }
.fchip small{ font:500 11px var(--mono); opacity:.7; margin-left:4px; }
.fchip:hover{ border-color:var(--text-dim); }
.fchip[aria-pressed='true']{ background:var(--text); color:var(--bg); border-color:var(--text); }
.home-3d .cat-block.is-out{ display:none !important; }
.home-3d .cat-block{ scroll-margin-top:calc(var(--header-h) + 16px); }

/* pipeline: three steps on one connected panel */
.pipe{ position:relative; display:grid; grid-template-columns:repeat(3,minmax(0,1fr)); border:1px solid var(--border); border-radius:var(--radius-lg); background:var(--surface); box-shadow:var(--shadow); overflow:hidden; }
.pipe-step{ position:relative; padding:28px 26px 26px; }
.pipe-step + .pipe-step{ border-left:1px solid var(--border); }
.pipe-step h3{ font-size:20px; margin:16px 0 8px; }
.pipe-step p{ margin:0; font-size:15px; }
.iso{ position:relative; width:84px; height:64px; }
.iso i{ position:absolute; left:18px; top:14px; width:42px; height:42px; border-radius:7px; border:1.5px solid var(--c); background:color-mix(in srgb, var(--c) 12%, transparent);
  transform:rotateX(58deg) rotateZ(-38deg) translateZ(var(--z,0px)); transition:transform .35s cubic-bezier(.16,1,.3,1), background .3s ease; }
.iso i:nth-child(2){ --z:9px; } .iso i:nth-child(3){ --z:18px; background:color-mix(in srgb, var(--c) 38%, transparent); }
.pipe-step:hover .iso i:nth-child(2){ --z:16px; } .pipe-step:hover .iso i:nth-child(3){ --z:32px; }
/* chevron on each divider */
.pipe-step + .pipe-step::before{ content:''; position:absolute; left:-7px; top:44px; width:13px; height:13px; background:var(--surface); border-top:1.5px solid var(--text-faint); border-right:1.5px solid var(--text-faint); transform:rotate(45deg); }

/* proof: one featured link, two supporting */
.proof{ display:grid; grid-template-columns:minmax(0,1.25fr) minmax(0,1fr); grid-template-rows:auto auto; gap:14px; }
.proof a{ display:flex; flex-direction:column; align-items:flex-start; gap:10px; padding:22px; border:1px solid var(--border); border-radius:var(--radius-lg); background:var(--surface); transition:border-color .2s ease, transform .2s ease, box-shadow .2s ease; }
.proof a:hover{ border-color:var(--accent); transform:translateY(-2px); box-shadow:var(--shadow); }
.proof-big{ margin-bottom:auto; font:700 clamp(72px,9vw,112px)/1 var(--display); letter-spacing:-.045em; color:color-mix(in srgb, var(--accent) 78%, transparent); }
.proof-main{ grid-row:1 / span 2; padding:30px !important; justify-content:flex-end; background:linear-gradient(180deg, color-mix(in srgb, var(--accent) 7%, var(--surface)), var(--surface)) !important; }
.proof-main .more{ margin-top:6px; }
.proof-main h3{ font-size:clamp(24px,2.8vw,32px); letter-spacing:-.02em; }
.proof h3{ font-size:19px; margin:4px 0 0; }
.proof p{ margin:0; font-size:15px; }
.proof .more{ margin-top:auto; padding-top:6px; font-weight:600; font-size:14px; color:var(--accent); }

.guides{ display:flex; flex-wrap:wrap; gap:10px; }
.guides a{ padding:9px 15px; border-radius:100px; border:1px solid var(--border); background:var(--surface); font-size:14px; font-weight:500; color:var(--text-dim); transition:color .15s ease, border-color .15s ease; }
.guides a:hover{ color:var(--accent); border-color:var(--accent); }

.home-3d .faq-list{ max-width:52rem; }
.home-3d .faq-item{ border:1px solid var(--border); border-radius:var(--radius); background:var(--surface); padding:0; margin-bottom:10px; }
.home-3d .faq-item summary{ list-style:none; cursor:pointer; padding:17px 20px; display:flex; justify-content:space-between; align-items:center; gap:16px; font:600 16px var(--display); color:var(--text); }
.home-3d .faq-item summary::-webkit-details-marker{ display:none; }
.home-3d .faq-item p{ padding:0 20px 18px; margin:0; font-size:15px; }
.home-3d .faq-caret{ font:500 22px var(--mono); color:var(--accent); transition:transform .2s ease; }
.home-3d .faq-item[open] .faq-caret{ transform:rotate(45deg); }

.cta{ display:flex; align-items:center; justify-content:space-between; gap:24px; flex-wrap:wrap; padding:34px 32px; border:1px solid var(--border); border-radius:var(--radius-lg); box-shadow:var(--shadow);
  background:radial-gradient(34rem 16rem at 0% 0%, color-mix(in srgb, var(--accent) 14%, transparent), transparent 70%), var(--surface); }
.cta h2{ font-size:clamp(24px,3vw,32px); letter-spacing:-.025em; margin:0 0 8px; }
.cta p{ margin:0; max-width:32rem; }
.cta-row{ display:flex; gap:12px; flex-wrap:wrap; }
.home-3d #site-footer{ margin-top:72px; }

/* ---------- responsive: the two system breakpoints ---------- */
@media (max-width:980px){
  .c3-stage{ height:170px; }
  .proof{ grid-template-columns:1fr; }
  .proof-main{ grid-row:auto; }
}
@media (max-width:760px){
  .hx{ padding:36px 0 28px; }
  .hx-search{ flex-direction:column; } .hx-search .btn{ width:100%; }
  .c3-grid{ gap:10px; }
  .c3-stage{ height:118px; } .c3-obj{ --s:.62; }
  .c3-body{ flex-direction:column; align-items:flex-start; gap:8px; padding:10px 12px 12px; }
  .c3-body small{ display:none; }
  /* static fallback on small screens: keep the 3D pose, drop all motion and tilt */
  .c3-sway, .ov-slab, .oi-photo, .oa-bar, .op-flip{ animation:none !important; }
  .pipe{ grid-template-columns:1fr; } .pipe-step + .pipe-step{ border-left:0; border-top:1px solid var(--border); } .pipe-step + .pipe-step::before{ display:none; }
  .home-3d .sec{ padding-top:56px; }
  .cta{ padding:26px 20px; }
}
@media (prefers-reduced-motion: reduce){
  .c3-sway, .ov-slab, .oi-photo, .oa-bar, .op-flip{ animation:none !important; }
  .c3, .c3-obj, .ov-slab, .oi-photo, .op-page, .iso i, .rv, .tool-card{ transition:none !important; }
}