/* Build-status overlay. Additive: nothing here touches the existing page layout. */
:root{--trace:var(--pf,#10B981)}.header-right{display:flex;align-items:center;gap:clamp(12px,2vw,24px)}
.status-btn{font-family:var(--mono);font-size:.72rem;letter-spacing:.08em;text-transform:uppercase;color:var(--fg);background:rgba(31,31,46,.7);border:1px solid var(--border);border-radius:8px;padding:8px 14px;display:inline-flex;align-items:center;gap:10px;cursor:pointer;transition:border-color .25s,background .25s,transform .2s}
.status-btn:hover{border-color:rgba(16,185,129,.55);background:rgba(31,31,46,.95)}
.status-btn:active{transform:translateY(1px)}
.status-btn:focus-visible{outline:2px solid var(--indigo);outline-offset:2px}
.live{width:7px;height:7px;border-radius:50%;background:var(--trace);box-shadow:0 0 0 0 rgba(16,185,129,.6);animation:ring 2s ease-out infinite}
@keyframes ring{to{box-shadow:0 0 0 9px rgba(16,185,129,0)}}

.ov-lock{overflow:hidden}
.overlay{position:fixed;inset:0;z-index:100;display:grid;place-items:center;padding:clamp(12px,3vh,32px);background:rgba(8,8,12,.72);-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);opacity:0;transition:opacity .28s}
.overlay[hidden]{display:none}
.overlay.is-open{opacity:1}
.ov-panel{width:min(1040px,100%);max-height:100%;display:flex;flex-direction:column;background:var(--bg);border:1px solid var(--border);border-radius:14px;box-shadow:0 30px 120px rgba(0,0,0,.6);transform:translateY(16px) scale(.985);transition:transform .4s var(--ease);overflow:hidden;position:relative}
.overlay.is-open .ov-panel{transform:none}
.ov-panel::before{content:"";position:absolute;inset:0 0 auto 0;height:2px;background:linear-gradient(90deg,var(--indigo),var(--trace))}
.ov-head{display:flex;justify-content:space-between;align-items:flex-start;gap:16px;padding:clamp(18px,3vh,28px) clamp(18px,3vw,32px) 12px}
.ov-head .eyebrow{margin-bottom:8px}
.ov-title{font-size:clamp(1.5rem,3.6vh,2.1rem);letter-spacing:-.03em;line-height:1.1;font-weight:700}
.ov-sub{color:var(--muted);font-size:.9rem;margin-top:6px}
.ov-close{flex:none;width:36px;height:36px;border-radius:8px;border:1px solid var(--border);background:rgba(31,31,46,.7);color:var(--fg-2);display:grid;place-items:center;cursor:pointer;transition:color .2s,border-color .2s}
.ov-close svg{width:14px;height:14px}
.ov-close:hover{color:var(--fg);border-color:rgba(255,255,255,.25)}
.ov-close:focus-visible{outline:2px solid var(--indigo)}
.ov-body{overflow-y:auto;padding:8px clamp(18px,3vw,32px) clamp(18px,3vh,28px);scrollbar-width:thin;scrollbar-color:var(--surface-2) transparent}
.ov-loading,.ov-error{color:var(--muted);font-family:var(--mono);font-size:.8rem;padding:24px 0}
.ov-grid{display:grid;grid-template-columns:minmax(0,1.25fr) minmax(0,1fr);gap:clamp(20px,3vw,40px);align-items:start}
.ov-meta{display:flex;flex-wrap:wrap;gap:6px 18px;font-family:var(--mono);font-size:.68rem;letter-spacing:.08em;text-transform:uppercase;color:var(--muted);margin-bottom:16px}

/* timeline */
.phases{list-style:none;position:relative;padding-left:26px}
.phases::before{content:"";position:absolute;left:5px;top:6px;bottom:6px;width:1px;background:var(--border)}
.ph{position:relative;padding:0 0 18px;opacity:0;transform:translateY(8px);animation:phIn .5s var(--ease) forwards;animation-delay:calc(var(--i)*70ms + 120ms)}
@keyframes phIn{to{opacity:1;transform:none}}
.ph-node{position:absolute;left:-26px;top:5px;width:11px;height:11px;background:var(--bg);border:1px solid var(--muted)}
.ph--done .ph-node{background:var(--indigo);border-color:var(--indigo)}
.ph--active .ph-node{background:var(--trace);border-color:var(--trace);animation:ring 2s ease-out infinite}
.ph--next .ph-node{border-color:var(--fg-2)}
.ph-head{display:flex;justify-content:space-between;align-items:baseline;gap:12px}
.ph h3{font-size:1rem;font-weight:600;letter-spacing:-.01em}
.ph--planned h3,.ph--next h3{color:var(--fg-2)}
.ph-state{flex:none;font-family:var(--mono);font-size:.6rem;letter-spacing:.1em;text-transform:uppercase;color:var(--muted);border:1px solid var(--border);border-radius:99px;padding:2px 9px}
.ph--active .ph-state{color:var(--trace);border-color:rgba(16,185,129,.45)}
.ph--done .ph-state{color:var(--fg-2)}
.ph-date{font-family:var(--mono);font-size:.66rem;color:var(--muted);margin:2px 0 4px}
.ph p{font-size:.86rem;line-height:1.5;color:var(--fg-2);max-width:56ch}
.ph--planned p,.ph--next p{color:var(--muted)}
.ph-bar{height:4px;background:var(--surface-2);border-radius:2px;margin-top:10px;overflow:hidden;max-width:320px}
.ph-bar i{display:block;height:100%;width:var(--p);background:var(--trace);transform-origin:0 50%;animation:barIn 1.4s var(--ease) .5s backwards;position:relative;overflow:hidden}
.ph-bar i::after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,transparent,rgba(255,255,255,.45),transparent);transform:translateX(-100%);animation:shine 2.4s linear infinite}
@keyframes barIn{from{transform:scaleX(0)}}
@keyframes shine{to{transform:translateX(100%)}}

/* trace panel */
.trace{position:sticky;top:0;border:1px solid rgba(16,185,129,.28);border-radius:12px;background:linear-gradient(180deg,rgba(16,185,129,.07),rgba(21,21,29,.9) 40%);padding:18px;overflow:hidden}
.trace-top{display:flex;justify-content:space-between;align-items:center;font-family:var(--mono);font-size:.68rem;letter-spacing:.1em;text-transform:uppercase}
.trace-label{color:var(--trace);display:flex;align-items:center;gap:8px}
.trace-label .dot{background:var(--trace)}
.trace-live{color:var(--bad);display:flex;align-items:center;gap:6px;font-weight:600}
.trace-live::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--bad);animation:pulse 1s ease-in-out infinite}
.trace-wave{display:flex;align-items:flex-end;gap:3px;height:44px;margin:16px 0 14px}
.trace-wave i{flex:1;height:var(--h);background:var(--trace);opacity:.75;border-radius:1px;transform-origin:50% 100%;animation:wave 1.1s ease-in-out infinite alternate;animation-delay:var(--d)}
@keyframes wave{from{transform:scaleY(.18)}to{transform:scaleY(1)}}
.trace h3{font-size:1.05rem;line-height:1.3;font-weight:600;letter-spacing:-.015em}
.trace-text{font-size:.82rem;color:var(--fg-2);margin:8px 0 14px;line-height:1.5}
.stream{font-family:var(--mono);font-size:.68rem;line-height:1.5;height:calc(9 * 1.5 * .68rem + 8px);overflow:hidden;border-top:1px solid var(--border);padding-top:8px;display:flex;flex-direction:column;justify-content:flex-end;-webkit-mask-image:linear-gradient(transparent,#000 35%);mask-image:linear-gradient(transparent,#000 35%)}
.sl{display:flex;gap:8px;white-space:nowrap;overflow:hidden;animation:sl .4s var(--ease)}
@keyframes sl{from{opacity:0;transform:translateY(8px)}}
.sl span:last-child{color:var(--fg-2);overflow:hidden;text-overflow:ellipsis}
.sid{color:var(--muted)}
.sl b{flex:none;width:68px;font-weight:600}
.t-req{color:var(--indigo)}.t-ok{color:var(--ok)}.t-warn{color:var(--warn)}.t-bad{color:var(--bad)}

@media (max-width:820px){
  .ov-grid{grid-template-columns:1fr}
  .trace{position:static;order:-1}
  .status-btn{padding:7px 10px;font-size:.64rem}
  .header-status{display:none}
}
@media (prefers-reduced-motion:reduce){
  .ph{opacity:1;transform:none}
  .trace-wave i{animation:none;transform:scaleY(.6)}
}

/* Trace chain: requirement -> design -> evidence -> verdict */
.trace-badge{color:var(--muted);font-family:var(--mono);font-size:.62rem;letter-spacing:.1em;text-transform:uppercase;border:1px solid var(--border);border-radius:99px;padding:2px 9px;white-space:nowrap}
.chain{display:flex;align-items:flex-start;margin:20px 0 18px}
.cn{display:flex;flex-direction:column;align-items:center;gap:8px;flex:none;width:64px}
.cn em{font-style:normal;font-family:var(--mono);font-size:.58rem;letter-spacing:.06em;text-transform:uppercase;color:var(--muted);text-align:center;transition:color .3s}
.cn-box{width:26px;height:26px;border:1px solid var(--muted);background:var(--bg);transition:background .3s,border-color .3s,box-shadow .3s,transform .3s}
.cn.lit .cn-box{border-color:var(--trace);background:rgba(16,185,129,.25)}
.cn.lit em{color:var(--fg-2)}
.cn.hit .cn-box{transform:scale(1.18);box-shadow:0 0 0 6px rgba(16,185,129,.15)}
.cn.v-ok .cn-box{background:var(--ok);border-color:var(--ok)}
.cn.v-warn .cn-box{background:var(--warn);border-color:var(--warn)}
.cn.v-bad .cn-box{background:var(--bad);border-color:var(--bad)}
.cn-link{flex:1;height:26px;position:relative;min-width:8px}
.cn-link::before{content:"";position:absolute;left:0;right:0;top:50%;height:1px;background:var(--border)}
.cn-link b{position:absolute;top:calc(50% - 2px);left:0;width:5px;height:5px;background:var(--trace);opacity:0;animation:flow 2.2s linear infinite}
.cn-link:nth-of-type(2) b{animation-delay:.5s}.cn-link:nth-of-type(3) b{animation-delay:1s}
@keyframes flow{0%{left:0;opacity:0}15%{opacity:1}85%{opacity:1}100%{left:calc(100% - 5px);opacity:0}}
@media (prefers-reduced-motion:reduce){.cn-link b{animation:none}}

/* ===== performance pass ===== */
/* overlay: no backdrop blur over a moving page; pause the page behind it instead */
.overlay{-webkit-backdrop-filter:none;backdrop-filter:none;background:rgba(8,8,12,.9)}
.ov-lock .app *,.ov-lock .app *::before,.ov-lock .app *::after,.ov-lock .glow{animation-play-state:paused!important}
.ov-panel{contain:layout paint}
/* pulsing rings: animate a pseudo element's transform/opacity, not box-shadow */
.live{box-shadow:none;animation:none;position:relative}
.live::after,.ph--active .ph-node::after{content:"";position:absolute;inset:-1px;border:1px solid var(--trace);animation:ringT 2s ease-out infinite;pointer-events:none}
.live::after{border-radius:50%}
.ph--active .ph-node{animation:none}
@keyframes ringT{from{transform:scale(1);opacity:.7}to{transform:scale(2.6);opacity:0}}
/* flowing packets: transform instead of left */
.cn-link{container-type:inline-size}
.cn-link b{left:0}
@keyframes flow{0%{transform:translateX(0);opacity:0}15%{opacity:1}85%{opacity:1}100%{transform:translateX(calc(100cqw - 5px));opacity:0}}
.ph-bar i{will-change:auto}

/* Build status button: solid indigo, plain sans, no indicator dot */
.status-btn{font-family:var(--sans);font-size:.88rem;font-weight:500;letter-spacing:0;text-transform:none;color:#fff;background:var(--indigo);border:1px solid var(--indigo);border-radius:6px;padding:8px 16px}
.status-btn:hover{background:#7a7df3;border-color:#7a7df3}


/* final pass: flat panel, sans labels, no indicator dots */
.ov-panel::before{display:none}
.overlay{background:rgba(8,8,12,.9)}
.trace{background:#101016;border-color:var(--border)}
.ov-head .eyebrow{font-size:.9rem}
.ov-meta,.ph-state,.trace-badge,.trace-label{font-family:var(--sans);text-transform:none;letter-spacing:0}
.ov-meta{font-size:.82rem}
.ph-state{font-size:.74rem;border-radius:5px;padding:2px 8px}
.trace-label{font-size:.9rem;font-weight:500}
.trace-badge{font-size:.74rem;border-radius:5px;padding:2px 8px}
.cn em{font-family:var(--sans);text-transform:none;letter-spacing:0;font-size:.7rem}