/* ============================================================
   Building a Second Brain — interactive deck
   Brand: identity.nik.co v3.0  (Paper / Ink / Violet)
   ============================================================ */

:root{
  /* palette */
  --paper:#F4F1EC;
  --cream:#ECE7DF;
  --stone:#E9E6E0;
  --white:#FFFFFF;
  --ink:#111111;
  --ink-70:rgba(17,17,17,.70);
  --ink-55:rgba(17,17,17,.55);
  --ink-40:rgba(17,17,17,.40);
  --ink-12:rgba(17,17,17,.12);
  --ink-08:rgba(17,17,17,.08);
  --line:rgba(17,17,17,.10);
  --accent:#5E5BE7;        /* violet */
  --accent-strong:#4744d6;
  --accent-soft:rgba(94,91,231,.10);
  --accent-12:rgba(94,91,231,.12);

  /* category colors (alert feed) */
  --c-green:#15803D;
  --c-blue:#2563EB;
  --c-orange:#EA580C;
  --c-red:#DC2626;
  --c-purple:#7C3AED;
  --imsg-blue:#2563EB;

  /* fonts */
  --sans:"Inter","Inter Display",system-ui,-apple-system,sans-serif;
  --mono:"JetBrains Mono",ui-monospace,SFMono-Regular,Menlo,monospace;

  /* motion */
  --ease:cubic-bezier(.22,1,.36,1);
  --ease-soft:cubic-bezier(.4,0,.2,1);
  --t-slide:560ms;

  /* logical canvas */
  --cw:1280px;
  --ch:720px;

  /* radii (concentric system) */
  --r-lg:22px;
  --r-md:16px;
  --r-sm:11px;
  --r-xs:8px;

  --shadow-1:0 1px 2px rgba(17,17,17,.04);
  --shadow-2:0 1px 2px rgba(17,17,17,.05), 0 10px 30px -12px rgba(17,17,17,.18);
  --shadow-3:0 2px 4px rgba(17,17,17,.05), 0 24px 60px -24px rgba(17,17,17,.28);
  --inset-line:inset 0 0 0 1px var(--ink-08);
}

*{box-sizing:border-box;margin:0;padding:0}

html,body{height:100%}
body{
  font-family:var(--sans);
  background:var(--paper);
  color:var(--ink);
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
  text-rendering:optimizeLegibility;
  font-feature-settings:"cv02","cv03","cv04","cv11";
  overflow:hidden;
  position:fixed;
  inset:0;
  width:100%;
  -webkit-tap-highlight-color:transparent;
}
.tnum{font-variant-numeric:tabular-nums;font-feature-settings:"tnum" 1,"cv02","cv03","cv04"}
.ln{display:block}

button{font-family:inherit;cursor:pointer;border:0;background:none;color:inherit}
a{color:inherit;text-decoration:none}

.noscript{position:fixed;inset:0;display:grid;place-items:center;padding:2rem;text-align:center;font-size:18px}

/* ---------- stage + slide scaling ---------- */
.stage{
  position:fixed;
  inset:0;
  display:grid;
  place-items:center;
  background:
    radial-gradient(120% 120% at 50% -10%, rgba(94,91,231,.05), transparent 55%),
    var(--paper);
  overflow:hidden;
}
.slide-canvas{
  position:relative;
  width:var(--cw);
  height:var(--ch);
  transform-origin:center center;
  background:var(--paper);
  border-radius:18px;
  overflow:hidden;
  will-change:transform;
}

/* a single slide fills the canvas */
.slide{
  position:absolute;
  inset:0;
  padding:64px 76px;
  display:flex;
  flex-direction:column;
  opacity:0;
  pointer-events:none;
  transition:opacity 320ms var(--ease-soft);
}
.slide.is-active{opacity:1;pointer-events:auto}
/* dim slides that aren't active so transitions cross cleanly */
.slide.is-exit{opacity:0;transition:opacity 220ms var(--ease-soft)}

/* ---------- slide chrome ---------- */
.s-top{
  display:flex;justify-content:space-between;align-items:flex-start;
  margin-bottom:auto;
}
.eyebrow{
  font-family:var(--mono);
  font-size:12.5px;font-weight:500;letter-spacing:.16em;text-transform:uppercase;
  color:var(--ink-55);
  display:inline-flex;align-items:center;gap:9px;
}
.counter{
  font-family:var(--mono);font-size:12.5px;font-weight:500;letter-spacing:.12em;
  color:var(--ink-40);
}
.s-foot{
  display:flex;justify-content:space-between;align-items:flex-end;
  margin-top:auto;padding-top:26px;
}
.foot-cap{
  font-family:var(--mono);font-size:11px;font-weight:500;letter-spacing:.15em;text-transform:uppercase;
  color:var(--ink-40);max-width:70%;
}
.foot-sig{font-size:15px;font-weight:800;letter-spacing:-.01em;color:var(--ink-70)}
.foot-sig.mark{font-weight:900;font-style:italic;letter-spacing:-.04em}

/* slide body region (between top + foot) */
.s-body{display:flex;flex-direction:column;justify-content:center;flex:1;min-height:0;padding:18px 0}

/* ---------- typography ---------- */
.kicker-num{font-family:var(--mono);font-size:13px;font-weight:500;color:var(--accent);letter-spacing:.1em}
.display{
  font-weight:900;letter-spacing:-.038em;line-height:.96;
  font-size:72px;
}
.h1{font-weight:900;letter-spacing:-.035em;line-height:1.0;font-size:54px}
.h2{font-weight:900;letter-spacing:-.03em;line-height:1.02;font-size:42px}
.h3{font-weight:800;letter-spacing:-.02em;line-height:1.08;font-size:26px}
.lead{font-weight:500;letter-spacing:-.01em;line-height:1.4;font-size:21px;color:var(--ink-70)}
.body{font-weight:400;line-height:1.55;font-size:18px;color:var(--ink-70)}
.accent{color:var(--accent)}
.ink{color:var(--ink)}
.mono-label{font-family:var(--mono);font-size:11.5px;font-weight:500;letter-spacing:.16em;text-transform:uppercase;color:var(--ink-55)}

.quote{
  font-size:20px;line-height:1.42;font-weight:500;color:var(--ink);letter-spacing:-.01em;
  padding-left:18px;border-left:2px solid var(--accent);
}

/* ---------- layout helpers ---------- */
.split{display:grid;grid-template-columns:1fr 1fr;gap:56px;align-items:center;flex:1;min-height:0}
.split.wide-left{grid-template-columns:1.15fr .85fr}
.split.wide-right{grid-template-columns:.85fr 1.15fr}
.col{display:flex;flex-direction:column;gap:20px;min-width:0}
.col.center{justify-content:center}
.stack{display:flex;flex-direction:column;gap:14px}
.right-visual{display:flex;align-items:center;justify-content:center;min-width:0;height:100%}

/* ---------- stagger reveal system ---------- */
.reveal{opacity:0;transform:translateY(14px)}
.slide.is-active .reveal{
  animation:rise 620ms var(--ease) both;
  animation-delay:calc(var(--i,0) * 70ms + 120ms);
}
@keyframes rise{to{opacity:1;transform:none}}

.reveal-pop{opacity:0;transform:scale(.94)}
.slide.is-active .reveal-pop{
  animation:pop 560ms var(--ease) both;
  animation-delay:calc(var(--i,0) * 60ms + 160ms);
}
@keyframes pop{to{opacity:1;transform:none}}

/* ---------- iMessage mockup ---------- */
.phone{
  width:330px;
  background:var(--white);
  border-radius:42px;
  padding:14px;
  box-shadow:var(--shadow-3), var(--inset-line);
  position:relative;
}
.phone-screen{
  background:linear-gradient(180deg,#fbfbfd,#f4f4f7);
  border-radius:30px;overflow:hidden;
  display:flex;flex-direction:column;
  min-height:520px;
}
.phone-status{
  display:flex;justify-content:space-between;align-items:center;
  padding:13px 22px 4px;font-size:13px;font-weight:700;color:var(--ink);
}
.phone-status .dots{display:flex;gap:3px;align-items:center;opacity:.8}
.phone-hdr{
  display:flex;flex-direction:column;align-items:center;gap:5px;
  padding:6px 0 12px;border-bottom:.5px solid rgba(17,17,17,.08);
}
.avatar{
  width:42px;height:42px;border-radius:50%;background:var(--accent);
  color:#fff;display:grid;place-items:center;font-size:14px;font-weight:700;letter-spacing:-.01em;
}
.phone-hdr .nm{font-size:12px;font-weight:600;color:var(--ink-70)}
.phone-hdr .live{display:inline-flex;align-items:center;gap:6px;font-family:var(--mono);font-size:10px;font-weight:700;letter-spacing:.12em;color:var(--c-red)}
.live-dot{width:7px;height:7px;border-radius:50%;background:var(--c-red);animation:pulse 1.4s var(--ease-soft) infinite}
@keyframes pulse{0%,100%{opacity:1;transform:scale(1)}50%{opacity:.35;transform:scale(.8)}}

.thread{display:flex;flex-direction:column;gap:8px;padding:14px 14px 18px;overflow:hidden;flex:1}
.bubble{
  max-width:78%;padding:9px 13px;border-radius:18px;font-size:13.5px;line-height:1.34;
  opacity:0;transform:translateY(8px) scale(.96);
}
.bubble.in{background:#E9E9EB;color:var(--ink);align-self:flex-start;border-bottom-left-radius:5px}
.bubble.out{background:var(--imsg-blue);color:#fff;align-self:flex-end;border-bottom-right-radius:5px}
.bubble b{font-weight:700}
.bubble .ln{display:block}
.bubble.show{animation:bubbleIn 420ms var(--ease) both}
@keyframes bubbleIn{to{opacity:1;transform:none}}
.typing{align-self:flex-start;background:#E9E9EB;border-radius:16px;padding:11px 14px;display:none;gap:4px}
.typing.show{display:inline-flex}
.typing span{width:6px;height:6px;border-radius:50%;background:rgba(17,17,17,.35);animation:typing 1.1s infinite}
.typing span:nth-child(2){animation-delay:.15s}
.typing span:nth-child(3){animation-delay:.3s}
@keyframes typing{0%,60%,100%{transform:translateY(0);opacity:.4}30%{transform:translateY(-4px);opacity:1}}

/* ---------- generic cards ---------- */
.card{
  background:var(--white);border-radius:var(--r-md);padding:22px;
  box-shadow:var(--shadow-2);border:.5px solid var(--line);
}
.card.cream{background:var(--cream);box-shadow:var(--shadow-1)}
.card-lift{transition:transform 320ms var(--ease),box-shadow 320ms var(--ease)}
.card-lift:hover{transform:translateY(-3px);box-shadow:var(--shadow-3)}

/* numbered agenda / list rows */
.numlist{display:flex;flex-direction:column;gap:2px}
.numrow{
  display:grid;grid-template-columns:auto 1fr;gap:18px;align-items:baseline;
  padding:13px 4px;border-bottom:.5px solid var(--line);
}
.numrow:last-child{border-bottom:0}
.numrow .nx{font-family:var(--mono);font-size:13px;font-weight:500;color:var(--accent)}
.numrow .nt{font-size:18px;font-weight:700;letter-spacing:-.01em}
.numrow .nd{font-size:14px;color:var(--ink-55);grid-column:2;margin-top:2px;line-height:1.4}

/* big number columns */
.bigcols{display:grid;grid-template-columns:repeat(3,1fr);gap:0;flex:1;align-items:end}
.bigcol{padding:24px 26px;border-left:1px solid var(--line)}
.bigcol:first-child{border-left:0;padding-left:0}
.bigcol .bn{font-family:var(--mono);font-size:14px;color:var(--accent);font-weight:500}
.bigcol .bt{font-size:34px;font-weight:900;letter-spacing:-.03em;line-height:1.04;margin-top:14px}
.bigcol .bs{font-size:14px;color:var(--ink-55);margin-top:10px;line-height:1.45}

/* group title block */
.group-no{font-family:var(--mono);font-size:15px;color:var(--accent);font-weight:500;letter-spacing:.04em}

/* ---------- build tracker (N/5) ---------- */
.tracker{display:flex;flex-direction:column;gap:14px;margin-top:34px}
.tracker-lbl{font-family:var(--mono);font-size:12px;font-weight:500;letter-spacing:.14em;text-transform:uppercase;color:var(--ink-55)}
.tracker-lbl-n{color:var(--accent)}
.chips{display:grid;grid-template-columns:repeat(5,1fr);gap:10px}
.chip{
  position:relative;border-radius:var(--r-sm);padding:14px 14px;
  background:var(--cream);border:1px solid var(--line);
  display:flex;flex-direction:column;gap:9px;
  transition:background 500ms var(--ease),border-color 500ms var(--ease),transform 500ms var(--ease),box-shadow 500ms var(--ease);
}
.chip .ci{font-family:var(--mono);font-size:10.5px;font-weight:500;color:var(--ink-40);letter-spacing:.06em}
.chip .cn{font-size:14px;font-weight:700;letter-spacing:-.01em;color:var(--ink-70)}
.chip .lock{position:absolute;top:13px;right:13px;color:var(--ink-40);opacity:.7}
.chip.done{background:var(--ink);border-color:var(--ink)}
.chip.done .cn,.chip.done .ci{color:#fff}
.chip.done .ci{color:rgba(255,255,255,.6)}
.chip.active{background:var(--accent);border-color:var(--accent);box-shadow:0 12px 30px -12px rgba(94,91,231,.6);transform:translateY(-2px)}
.chip.active .cn{color:#fff}
.chip.active .ci{color:rgba(255,255,255,.75)}
.chip.active::after{content:"";position:absolute;inset:0;border-radius:var(--r-sm);box-shadow:0 0 0 0 rgba(94,91,231,.5);animation:ring 1.8s var(--ease-soft) infinite}
@keyframes ring{to{box-shadow:0 0 0 14px rgba(94,91,231,0)}}
.chip .check{position:absolute;top:12px;right:12px;color:#fff}

/* ---------- timeline ---------- */
.timeline{position:relative;padding:60px 10px 30px;flex:1;display:flex;align-items:center}
.tl-line{position:absolute;left:0;right:0;top:50%;height:2px;background:var(--line)}
.tl-fill{position:absolute;left:0;top:50%;height:2px;background:var(--accent);width:0;transition:width 1200ms var(--ease)}
.slide.is-active .tl-fill{width:var(--tl-w,72%)}
.tl-nodes{position:relative;display:grid;grid-template-columns:repeat(5,1fr);width:100%}
.tl-node{display:flex;flex-direction:column;align-items:center;text-align:center;gap:12px;position:relative}
.tl-dot{width:16px;height:16px;border-radius:50%;background:var(--paper);border:2px solid var(--ink-40);z-index:1;transition:all 400ms var(--ease)}
.tl-node.on .tl-dot{border-color:var(--accent);background:var(--accent);box-shadow:0 0 0 5px var(--accent-12)}
.tl-node.here .tl-dot{border-color:var(--accent);background:var(--accent);box-shadow:0 0 0 7px var(--accent-12)}
.tl-s{font-family:var(--mono);font-size:11px;letter-spacing:.08em;color:var(--ink-40);font-weight:500}
.tl-t{font-size:14.5px;font-weight:700;letter-spacing:-.01em;max-width:150px}
.tl-meta{font-size:12px;color:var(--ink-55)}
.tl-pin{position:absolute;bottom:calc(100% + 14px);font-family:var(--mono);font-size:11px;color:var(--accent);white-space:nowrap;font-weight:500}

/* ---------- browser mockup ---------- */
.browser{width:100%;max-width:560px;background:var(--white);border-radius:var(--r-md);box-shadow:var(--shadow-3),var(--inset-line);overflow:hidden}
.browser-bar{display:flex;align-items:center;gap:14px;padding:13px 16px;border-bottom:.5px solid var(--line);background:var(--cream)}
.tl-dots{display:flex;gap:7px}
.tl-dots i{width:11px;height:11px;border-radius:50%;background:rgba(17,17,17,.16);display:block}
.url{flex:1;background:var(--white);border-radius:8px;padding:6px 12px;font-family:var(--mono);font-size:12px;color:var(--ink-55);border:.5px solid var(--line)}
.tabs{display:flex;gap:7px;flex-wrap:wrap;padding:16px}
.tab{font-size:12px;font-weight:600;background:var(--cream);border:.5px solid var(--line);border-radius:7px;padding:7px 11px;color:var(--ink-70)}
.tab.plus{background:var(--ink);color:#fff;border-color:var(--ink)}
.tabbadge{margin-left:auto;font-family:var(--mono);font-size:11px;color:var(--c-red);font-weight:700;align-self:center}
.browser-empty{height:120px;display:grid;place-items:center;color:var(--ink-40);font-size:13px;border-top:.5px solid var(--line)}

/* ---------- dashboard / report card ---------- */
.panel{width:100%;max-width:430px;background:var(--white);border-radius:var(--r-md);box-shadow:var(--shadow-3),var(--inset-line);overflow:hidden}
.panel-hd{display:flex;justify-content:space-between;align-items:center;padding:16px 20px;border-bottom:.5px solid var(--line)}
.panel-hd .ttl{font-family:var(--mono);font-size:11px;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:var(--ink-70)}
.panel-hd .live{font-family:var(--mono);font-size:10px;font-weight:700;letter-spacing:.1em;color:var(--accent);display:inline-flex;gap:6px;align-items:center}
.panel-greet{padding:16px 20px 4px;font-size:16px;font-weight:700;letter-spacing:-.01em}
.metrics{padding:8px 20px 18px;display:flex;flex-direction:column}
.metric{display:flex;justify-content:space-between;align-items:baseline;padding:10px 0;border-bottom:.5px solid var(--line);font-size:14px}
.metric:last-child{border-bottom:0}
.metric .mk{color:var(--ink-55)}
.metric .mv{font-weight:700;letter-spacing:-.01em}
.up{color:var(--c-green)} .down{color:var(--c-red)}
.chartline{height:54px;margin:6px 20px 4px;position:relative}
.chartline svg{width:100%;height:100%;overflow:visible}
.chartline .pth{stroke:var(--accent);stroke-width:2.5;fill:none;stroke-linecap:round;stroke-dasharray:480;stroke-dashoffset:480}
.slide.is-active .chartline .pth{animation:draw 1400ms var(--ease) forwards;animation-delay:.3s}
@keyframes draw{to{stroke-dashoffset:0}}
.chartline .liveend{fill:var(--accent)}

/* ---------- source cards / grids ---------- */
.srccards{display:flex;flex-direction:column;gap:12px;width:100%;max-width:380px}
.srccard{display:flex;flex-direction:column;gap:3px;background:var(--white);border:.5px solid var(--line);border-radius:var(--r-sm);padding:15px 17px;box-shadow:var(--shadow-1)}
.srccard .su{font-family:var(--mono);font-size:14px;font-weight:700;color:var(--accent);letter-spacing:-.01em}
.srccard .sd{font-size:13px;color:var(--ink-55)}

.icongrid{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}
.igc{background:var(--white);border:.5px solid var(--line);border-radius:var(--r-sm);padding:18px 16px;display:flex;align-items:center;gap:12px;box-shadow:var(--shadow-1)}
.igc .ico{width:34px;height:34px;border-radius:9px;background:var(--accent-soft);display:grid;place-items:center;color:var(--accent);flex:none}
.igc .igt{font-size:14px;font-weight:600;letter-spacing:-.01em;line-height:1.25}
.cron{margin-top:18px;display:flex;align-items:center;gap:12px;background:var(--ink);color:#fff;border-radius:var(--r-sm);padding:14px 18px}
.cron .cic{color:var(--accent);font-size:18px;animation:spin 6s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}
.cron .ct{font-size:13.5px;line-height:1.4}
.cron .ct b{font-family:var(--mono);font-weight:700;letter-spacing:.04em}

/* method tags */
.methods{display:flex;gap:14px;margin-top:30px}
.method{font-family:var(--mono);font-size:18px;font-weight:700;letter-spacing:.04em;color:var(--ink);background:var(--cream);border:1px solid var(--line);border-radius:var(--r-sm);padding:14px 28px}
.method:nth-child(2){color:var(--accent);border-color:var(--accent);background:var(--accent-soft)}

/* ---------- tool stack grid ---------- */
.stackgrid{display:flex;flex-direction:column;gap:14px;flex:1;justify-content:center;margin-top:8px}
.stackrow{display:grid;grid-template-columns:130px 1fr;gap:18px;align-items:center}
.stackcat{font-family:var(--mono);font-size:10.5px;font-weight:600;letter-spacing:.1em;text-transform:uppercase;color:var(--ink-40);text-align:right}
.tools{display:flex;flex-wrap:wrap;gap:7px}
.toolpill{font-size:12.5px;font-weight:600;background:var(--white);border:.5px solid var(--line);border-radius:7px;padding:5px 10px;color:var(--ink-70);box-shadow:var(--shadow-1)}
.badge-pill{font-family:var(--mono);font-size:12px;font-weight:700;letter-spacing:.04em;color:#fff;background:var(--accent);border-radius:999px;padding:8px 16px}

/* ---------- cockpit 3 col ---------- */
.cockpit{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;flex:1;align-items:stretch}
.ckcol{display:flex;flex-direction:column;gap:10px}
.ckcard{background:var(--white);border:.5px solid var(--line);border-radius:var(--r-md);box-shadow:var(--shadow-2);padding:0;overflow:hidden;flex:1;display:flex;flex-direction:column}
.ckhd{font-family:var(--mono);font-size:9.5px;font-weight:600;letter-spacing:.1em;text-transform:uppercase;color:var(--ink-40);padding:12px 14px 0}
.ckbody{padding:10px 14px 14px;display:flex;flex-direction:column;gap:7px;flex:1}
.ckline{font-size:12px;line-height:1.4;color:var(--ink-70)}
.ckq{font-size:12px;background:var(--imsg-blue);color:#fff;padding:8px 11px;border-radius:14px;border-bottom-right-radius:4px;align-self:flex-end;max-width:92%;line-height:1.35}
.cka{font-size:12px;background:#E9E9EB;color:var(--ink);padding:8px 11px;border-radius:14px;border-bottom-left-radius:4px;align-self:flex-start;max-width:94%;line-height:1.35}
.ckcap{font-size:12px;color:var(--ink-55);font-weight:600;padding-left:2px}

/* ---------- org chart ---------- */
.org{display:flex;flex-direction:column;align-items:center;gap:0;flex:1;justify-content:center}
.org-top{background:var(--ink);color:#fff;border-radius:var(--r-md);padding:16px 30px;text-align:center;box-shadow:var(--shadow-2);z-index:2}
.org-top .ot{font-size:20px;font-weight:800;letter-spacing:-.02em}
.org-top .os{font-family:var(--mono);font-size:11px;color:rgba(255,255,255,.6);letter-spacing:.06em;margin-top:3px}
.org-stem{width:2px;height:30px;background:var(--line)}
.org-row{display:grid;grid-template-columns:repeat(6,1fr);gap:14px;width:100%;position:relative}
.org-row::before{content:"";position:absolute;top:-15px;left:8.33%;right:8.33%;height:2px;background:var(--line)}
.org-node{background:var(--white);border:.5px solid var(--line);border-radius:var(--r-sm);padding:16px 10px;text-align:center;font-size:13.5px;font-weight:700;letter-spacing:-.01em;box-shadow:var(--shadow-1);position:relative}
.org-node::before{content:"";position:absolute;bottom:100%;left:50%;width:2px;height:15px;background:var(--line)}

/* ---------- persona cards ---------- */
.personas{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;flex:1;align-items:center}
.persona{background:var(--white);border:.5px solid var(--line);border-radius:var(--r-md);padding:24px 20px;box-shadow:var(--shadow-2);display:flex;flex-direction:column;gap:14px}
.persona .pav{width:54px;height:54px;border-radius:50%;display:grid;place-items:center;color:#fff;font-weight:700;font-size:18px;letter-spacing:-.01em}
.persona .pn{font-size:18px;font-weight:800;letter-spacing:-.02em}
.persona .pr{font-size:13px;color:var(--ink-55)}

/* team grid */
.team{display:grid;grid-template-columns:repeat(4,1fr);gap:13px;flex:1;align-content:center}
.tcard{background:var(--white);border:.5px solid var(--line);border-radius:var(--r-sm);padding:16px;box-shadow:var(--shadow-1);display:flex;flex-direction:column;gap:7px}
.tcard .tt{font-size:14.5px;font-weight:700;letter-spacing:-.01em}
.tcard .td{font-size:12.5px;color:var(--ink-55);line-height:1.4}

/* prompt -> article */
.p2a{display:grid;grid-template-columns:1fr auto 1.1fr;gap:28px;align-items:center;flex:1}
.promptcard{background:var(--ink);color:#fff;border-radius:var(--r-md);padding:24px;box-shadow:var(--shadow-3)}
.promptcard .pl{font-family:var(--mono);font-size:11px;letter-spacing:.1em;color:var(--accent);text-transform:uppercase}
.promptcard .pq{font-size:18px;line-height:1.45;margin-top:12px;font-weight:500}
.bigarrow{font-size:30px;color:var(--ink-40)}
.article{background:var(--white);border-radius:var(--r-md);box-shadow:var(--shadow-3),var(--inset-line);overflow:hidden}
.article .ahd{font-family:var(--mono);font-size:10px;letter-spacing:.1em;color:var(--ink-40);padding:14px 20px 0;text-transform:uppercase}
.article .ah{font-size:23px;font-weight:900;letter-spacing:-.025em;line-height:1.1;padding:8px 20px 14px}
.article .aimg{height:90px;background:linear-gradient(120deg,var(--accent-soft),var(--cream));margin:0 20px;border-radius:10px}
.article .acta{margin:16px 20px 20px;background:var(--accent);color:#fff;text-align:center;padding:11px;border-radius:10px;font-weight:700;font-size:14px}

/* transcript */
.transcript{width:100%;max-width:440px;background:var(--white);border-radius:var(--r-md);box-shadow:var(--shadow-3),var(--inset-line);overflow:hidden}
.tr-hd{display:flex;justify-content:space-between;align-items:center;padding:14px 18px;border-bottom:.5px solid var(--line)}
.tr-hd .trt{font-family:var(--mono);font-size:11px;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:var(--ink-70)}
.tr-body{padding:14px 18px;display:flex;flex-direction:column;gap:9px}
.tr-line{font-size:13px;line-height:1.4}
.tr-line .who{font-weight:700;color:var(--ink)}
.tr-line.you .who{color:var(--accent)}
.tr-line .what{color:var(--ink-70)}
.tr-hi{font-size:12px;color:var(--accent);font-weight:600;padding:6px 0 2px}
.tr-note{background:var(--accent-soft);border-left:2px solid var(--accent);border-radius:0 8px 8px 0;padding:10px 13px;font-size:12.5px;line-height:1.4;color:var(--ink)}
.tr-note b{color:var(--accent)}

/* alert feed */
.feed{display:grid;grid-template-columns:1fr 1fr;gap:11px;flex:1;align-content:center}
.alert{display:grid;grid-template-columns:auto auto 1fr;gap:12px;align-items:center;background:var(--white);border:.5px solid var(--line);border-radius:var(--r-sm);padding:13px 16px;box-shadow:var(--shadow-1);opacity:0;transform:translateX(-10px)}
.slide.is-active .alert{animation:slidein 500ms var(--ease) both;animation-delay:calc(var(--i,0)*90ms + 200ms)}
@keyframes slidein{to{opacity:1;transform:none}}
.atag{font-family:var(--mono);font-size:9.5px;font-weight:700;letter-spacing:.06em;color:#fff;border-radius:5px;padding:4px 8px;white-space:nowrap}
.atime{font-family:var(--mono);font-size:11px;color:var(--ink-40)}
.amsg{font-size:13px;color:var(--ink-70);line-height:1.3}

/* steps */
.steps{display:grid;grid-template-columns:repeat(5,1fr);gap:0;flex:1;align-items:center}
.step{padding:0 20px;border-left:1px solid var(--line)}
.step:first-child{border-left:0;padding-left:0}
.step .sn{width:34px;height:34px;border-radius:9px;background:var(--accent-soft);color:var(--accent);display:grid;place-items:center;font-family:var(--mono);font-weight:700;font-size:14px;margin-bottom:16px}
.step .st{font-size:16px;font-weight:700;letter-spacing:-.01em;line-height:1.15}
.step .ss{font-size:13px;color:var(--ink-55);margin-top:8px;line-height:1.4}

/* two cards big */
.twocards{display:grid;grid-template-columns:1fr 1fr;gap:24px;flex:1;align-items:center}
.bigcard{background:var(--white);border:.5px solid var(--line);border-radius:var(--r-lg);padding:34px;box-shadow:var(--shadow-2);display:flex;flex-direction:column;gap:14px}
.bigcard .bct{font-size:26px;font-weight:800;letter-spacing:-.02em}
.bigcard .bcd{font-size:16px;color:var(--ink-70);line-height:1.5}
.bigcard.linked{transition:transform 320ms var(--ease),box-shadow 320ms var(--ease)}
.bigcard.linked:hover{transform:translateY(-4px);box-shadow:var(--shadow-3)}
.linkrow{margin-top:auto;font-family:var(--mono);font-size:12px;color:var(--accent);font-weight:600;display:inline-flex;align-items:center;gap:7px}

/* quad */
.quad{display:grid;grid-template-columns:1fr 1fr;gap:18px;flex:1;align-content:center}
.qcell{background:var(--white);border:.5px solid var(--line);border-radius:var(--r-md);padding:22px 24px;box-shadow:var(--shadow-1)}
.qcell .qt{font-size:19px;font-weight:800;letter-spacing:-.02em;margin-bottom:8px}
.qcell .qd{font-size:14px;color:var(--ink-55);line-height:1.45}

/* before/after */
.ba{display:grid;grid-template-columns:1fr auto 1fr;gap:28px;align-items:center;flex:1}
.bacol{background:var(--white);border:.5px solid var(--line);border-radius:var(--r-md);padding:24px;box-shadow:var(--shadow-1)}
.bacol.new{background:var(--ink);color:#fff;box-shadow:var(--shadow-3)}
.bacol .bal{font-family:var(--mono);font-size:11px;letter-spacing:.1em;text-transform:uppercase;color:var(--ink-40);margin-bottom:16px}
.bacol.new .bal{color:var(--accent)}
.baitem{padding:9px 0;border-bottom:.5px solid var(--line);font-size:15px}
.bacol.new .baitem{border-color:rgba(255,255,255,.12)}
.baitem:last-child{border-bottom:0}
.baitem b{font-weight:700}
.baitem .bsub{color:var(--ink-55);font-size:13px}
.bacol.new .baitem .bsub{color:rgba(255,255,255,.6)}

/* newsletter / CTA */
.signup{display:flex;flex-direction:column;gap:16px;max-width:420px;width:100%}
.signup .badge{align-self:flex-start;font-family:var(--mono);font-size:11px;font-weight:700;letter-spacing:.12em;color:var(--c-green);background:rgba(21,128,61,.08);border-radius:999px;padding:7px 14px}
.signup form{display:flex;gap:9px}
.signup input{flex:1;font-family:var(--sans);font-size:15px;padding:14px 16px;border-radius:var(--r-sm);border:1px solid var(--line);background:var(--white);color:var(--ink);outline:none;transition:border-color 200ms var(--ease),box-shadow 200ms var(--ease)}
.signup input:focus{border-color:var(--accent);box-shadow:0 0 0 4px var(--accent-soft)}
.btn{background:var(--accent);color:#fff;font-weight:700;font-size:15px;border-radius:var(--r-sm);padding:14px 22px;transition:transform 160ms var(--ease),background 200ms var(--ease)}
.btn:hover{background:var(--accent-strong);transform:translateY(-1px)}
.btn:active{transform:translateY(0)}
.ctalink{font-family:var(--mono);font-size:15px;color:var(--accent);font-weight:600}
.email-cta{font-size:20px;font-weight:500;color:var(--ink-70)}
.email-cta a{color:var(--accent);font-weight:700;border-bottom:2px solid var(--accent-soft);transition:border-color 200ms}
.email-cta a:hover{border-color:var(--accent)}

/* explore links (pulls-in surfaces) */
.explore{display:grid;grid-template-columns:repeat(2,1fr);gap:12px;margin-top:24px;max-width:560px}
.exlink{display:flex;flex-direction:column;gap:3px;background:var(--white);border:.5px solid var(--line);border-radius:var(--r-sm);padding:14px 16px;box-shadow:var(--shadow-1);transition:transform 240ms var(--ease),box-shadow 240ms var(--ease),border-color 240ms}
.exlink:hover{transform:translateY(-2px);box-shadow:var(--shadow-2);border-color:var(--accent)}
.exlink .exu{font-family:var(--mono);font-size:13px;font-weight:700;color:var(--accent)}
.exlink .exd{font-size:12.5px;color:var(--ink-55)}

/* ---------- HUD ---------- */
.hud{position:fixed;top:0;left:0;right:0;display:flex;align-items:center;gap:18px;padding:18px 24px;z-index:40;pointer-events:none}
.hud>*{pointer-events:auto}
.hud-brand{width:38px;height:38px;border-radius:11px;background:var(--ink);color:var(--paper);display:grid;place-items:center;box-shadow:var(--shadow-2);transition:transform 200ms var(--ease)}
.hud-brand:hover{transform:scale(1.05)}
.ns-mark{font-weight:900;font-style:italic;letter-spacing:-.04em;font-size:17px}
.hud-progress{flex:1;height:3px;background:var(--ink-12);border-radius:99px;overflow:hidden;max-width:none}
.hud-progress-fill{height:100%;width:0;background:var(--accent);border-radius:99px;transition:width 480ms var(--ease)}
.hud-right{display:flex;align-items:center;gap:14px}
.hud-btn{width:34px;height:34px;border-radius:9px;color:var(--ink-55);display:grid;place-items:center;transition:background 200ms,color 200ms}
.hud-btn:hover{background:var(--ink-08);color:var(--ink)}
.hud-counter{font-family:var(--mono);font-size:13px;font-weight:500;color:var(--ink-55);font-variant-numeric:tabular-nums;letter-spacing:.04em}
.hud-counter-sep{margin:0 4px;color:var(--ink-40)}
#counterNow{color:var(--ink)}

/* nav arrows */
.nav-arrow{position:fixed;top:50%;transform:translateY(-50%);width:48px;height:48px;border-radius:50%;background:rgba(244,241,236,.7);backdrop-filter:blur(8px);color:var(--ink-70);display:grid;place-items:center;z-index:40;box-shadow:var(--shadow-1);transition:background 200ms,color 200ms,transform 200ms,opacity 300ms;border:.5px solid var(--line)}
.nav-arrow:hover{background:var(--white);color:var(--ink);box-shadow:var(--shadow-2)}
.nav-prev{left:20px}.nav-next{right:20px}
.nav-arrow:disabled{opacity:0;pointer-events:none}
.nav-prev:hover{transform:translateY(-50%) translateX(-2px)}
.nav-next:hover{transform:translateY(-50%) translateX(2px)}

/* hint */
.hint{position:fixed;bottom:22px;left:50%;transform:translateX(-50%);font-family:var(--mono);font-size:11.5px;letter-spacing:.04em;color:var(--ink-40);z-index:40;display:flex;align-items:center;gap:6px;transition:opacity 500ms;background:rgba(244,241,236,.6);backdrop-filter:blur(6px);padding:8px 14px;border-radius:99px}
.hint.hide{opacity:0;pointer-events:none}
.hint kbd{font-family:var(--mono);font-size:11px;background:var(--white);border:.5px solid var(--line);border-bottom-width:1.5px;border-radius:5px;padding:1px 6px;color:var(--ink-70)}
.hint-keys{display:inline-flex;gap:3px}

/* overview */
.overview{position:fixed;inset:0;z-index:60;background:rgba(244,241,236,.92);backdrop-filter:blur(14px);padding:24px 32px;display:flex;flex-direction:column;animation:fade 300ms var(--ease)}
.overview[hidden]{display:none}
@keyframes fade{from{opacity:0}to{opacity:1}}
.overview-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:20px}
.overview-close{font-family:var(--mono);font-size:12px;color:var(--ink-55);padding:8px 14px;border-radius:8px;transition:background 200ms,color 200ms}
.overview-close:hover{background:var(--ink-08);color:var(--ink)}
.overview-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(210px,1fr));gap:14px;overflow-y:auto;padding-bottom:30px;align-content:start}
.ov-thumb{aspect-ratio:16/9;border-radius:10px;overflow:hidden;border:1px solid var(--line);background:var(--white);box-shadow:var(--shadow-1);cursor:pointer;position:relative;transition:transform 200ms var(--ease),box-shadow 200ms var(--ease),border-color 200ms}
.ov-thumb:hover{transform:translateY(-3px);box-shadow:var(--shadow-2);border-color:var(--accent)}
.ov-thumb.current{border-color:var(--accent);box-shadow:0 0 0 2px var(--accent-soft)}
.ov-thumb .ovn{position:absolute;top:8px;left:9px;font-family:var(--mono);font-size:10px;color:var(--ink-40)}
.ov-thumb .ovt{position:absolute;left:10px;right:10px;bottom:9px;font-size:12px;font-weight:700;letter-spacing:-.01em;line-height:1.15;color:var(--ink)}
.ov-thumb .ovk{position:absolute;left:10px;top:22px;font-size:9px;font-family:var(--mono);letter-spacing:.08em;text-transform:uppercase;color:var(--accent)}

/* ---------- podcast welcome ---------- */
.welcome{position:fixed;inset:0;z-index:80;display:grid;place-items:center;padding:24px;background:rgba(17,17,17,.34);backdrop-filter:blur(6px);animation:fade 300ms var(--ease)}
.welcome[hidden]{display:none}
.welcome-card{background:var(--paper);border-radius:var(--r-lg);max-width:440px;width:100%;padding:38px 36px;box-shadow:var(--shadow-3);border:.5px solid var(--line);animation:welcomeIn 460ms var(--ease) both}
@keyframes welcomeIn{from{opacity:0;transform:translateY(14px) scale(.97)}to{opacity:1;transform:none}}
.welcome-icon{display:inline-grid;place-items:center;width:52px;height:52px;border-radius:14px;background:var(--accent-soft);color:var(--accent);margin-bottom:20px}
.welcome-label{display:block;font-family:var(--mono);font-size:11.5px;font-weight:600;letter-spacing:.16em;text-transform:uppercase;color:var(--accent);margin-bottom:10px}
.welcome-h{font-size:27px;font-weight:900;letter-spacing:-.03em;line-height:1.08;margin-bottom:12px}
.welcome-b{font-size:15.5px;line-height:1.55;color:var(--ink-70);margin-bottom:24px}
.welcome-b b{color:var(--ink);font-weight:700}
.welcome-btn{background:var(--accent);color:#fff;font-weight:700;font-size:15px;border-radius:var(--r-sm);padding:13px 24px;transition:transform 160ms var(--ease),background 200ms var(--ease)}
.welcome-btn:hover{background:var(--accent-strong);transform:translateY(-1px)}
.welcome-btn:active{transform:translateY(0)}
@media (max-width:820px){.welcome-card{padding:30px 26px}.welcome-h{font-size:23px}.welcome-b{font-size:15px}}

/* ---------- responsive (portrait / small) ---------- */
@media (max-width:820px){
  /* kill the letterbox scale — slides become full-bleed, reflowed, scrollable */
  .stage{display:block;overflow:hidden}
  .slide-canvas{transform:none!important;width:100%!important;height:100%!important;border-radius:0}
  .slide{padding:78px 20px 86px;justify-content:flex-start;overflow-y:auto;-webkit-overflow-scrolling:touch}
  .s-body{justify-content:flex-start;flex:0 0 auto;padding:14px 0 8px}
  .s-top{margin-bottom:0}
  .s-foot{margin-top:24px}

  /* mobile type scale */
  .display{font-size:40px;line-height:1.0}
  .h1{font-size:32px}
  .h2{font-size:26px}
  .h3{font-size:20px}
  .lead{font-size:17px}
  .body{font-size:15.5px}
  .quote{font-size:17px}

  /* stack every multi-column layout */
  .split,.split.wide-left,.split.wide-right{grid-template-columns:1fr;gap:26px}
  .col{gap:14px}
  .bigcols{grid-template-columns:1fr;align-items:start;gap:0}
  .bigcol{border-left:0;border-top:1px solid var(--line);padding:16px 0}
  .bigcol:first-child{border-top:0;padding-top:0}
  .bigcol .bt{font-size:28px}
  .cockpit{grid-template-columns:1fr;gap:12px}
  .feed{grid-template-columns:1fr}
  .quad{grid-template-columns:1fr;gap:12px}
  .twocards{grid-template-columns:1fr;gap:16px}
  .personas{grid-template-columns:1fr 1fr;gap:12px}
  .team{grid-template-columns:1fr 1fr;gap:10px}
  .explore{grid-template-columns:1fr}
  .stackrow{grid-template-columns:1fr;gap:5px;margin-bottom:6px}
  .stackcat{text-align:left}
  .methods{flex-wrap:wrap;gap:10px}
  .method{padding:11px 20px;font-size:15px}

  /* steps + tracker stack */
  .steps{grid-template-columns:1fr;gap:0}
  .step{border-left:0;border-top:1px solid var(--line);padding:16px 0}
  .step:first-child{border-top:0;padding-top:0}
  .chips{grid-template-columns:1fr 1fr;gap:8px}
  .tracker{margin-top:24px}

  /* before/after + prompt→article go vertical, arrows turn down */
  .ba,.p2a{grid-template-columns:1fr;gap:14px}
  .bigarrow{transform:rotate(90deg);justify-self:center}

  /* timeline becomes a vertical list */
  .timeline{flex-direction:column;padding:8px 0}
  .tl-line,.tl-fill{display:none}
  .tl-nodes{grid-template-columns:1fr;gap:16px;width:100%}
  .tl-node{flex-direction:row;align-items:center;gap:14px;text-align:left}
  .tl-node .tl-dot{order:-1}
  .tl-t{max-width:none}
  .tl-pin{position:static;margin-left:auto}

  /* org chart simplifies to a 2-col grid */
  .org-row{grid-template-columns:1fr 1fr;gap:10px}
  .org-row::before{display:none}
  .org-node::before{display:none}
  .org-stem{height:18px}

  /* mockups fill width */
  .phone{width:270px}
  .panel,.browser,.transcript{max-width:100%}
  .right-visual{justify-content:center;height:auto;margin-top:4px}
  .bigcard{padding:24px;border-radius:var(--r-md)}
  .bigcard .bct{font-size:22px}

  /* chrome */
  .hud{padding:12px 16px;gap:12px}
  .hud-brand{width:34px;height:34px}
  .nav-arrow{width:40px;height:40px;top:auto;bottom:18px;transform:none}
  .nav-prev{left:16px}.nav-next{right:16px}
  .nav-prev:hover,.nav-next:hover{transform:none}
  .hint{display:none}
  .foot-cap{font-size:10px;max-width:62%}
  .eyebrow{font-size:11px}
}

@media (max-width:380px){
  .display{font-size:34px}
  .h1{font-size:28px}
  .personas,.team{grid-template-columns:1fr}
  .chips{grid-template-columns:1fr}
}

/* reduced motion */
@media (prefers-reduced-motion:reduce){
  *{animation-duration:.001ms !important;animation-delay:0ms !important;transition-duration:.001ms !important}
  .slide.is-active .tl-fill{width:var(--tl-w,72%)}
}