/* termino landing — ported verbatim from docs/termino_landing.html.
   Tokens are the shared design-system vocabulary (docs/termino.md). */

*{box-sizing:border-box}
html,body{height:100%}
body{margin:0}

/* ── Theme tokens ──────────────────────────────────────────────────────── */
html{color-scheme:light}
html[data-theme="dark"]{color-scheme:dark}
#app{
  --bg:#f4f6f8; --bg2:#ffffff; --line:#e3e7ed;
  --text:#161a20; --dim:#5a6473; --faint:#98a1ae;
  --rc:#4f6bed; --rc-d:#3d56d4; --ok:#0f9d63;
  /* brand type: self-hosted Geist (fonts.css), system stacks kept as fallback */
  --font-sans:'Geist',ui-sans-serif,system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --font-mono:'Geist Mono',ui-monospace,SFMono-Regular,Menlo,monospace;
  min-height:100vh;position:relative;display:flex;flex-direction:column;
  background:var(--bg);color:var(--text);
  font-family:var(--font-sans,ui-sans-serif,system-ui,-apple-system,"Segoe UI",Roboto,sans-serif);
  transition:background .28s ease,color .28s ease;
}
#app[data-state="lock"],#app[data-state="arrive"],#app[data-state="conn"]{--rc:var(--ok)}

/* ── Dark theme (docs/termino_theme_mock.html "dark" palette) ────────────── */
html[data-theme="dark"] #app{
  --bg:#2c3148; --bg2:#383e58; --line:#4a5475;
  --text:#dde3f2; --dim:#9ea8c4; --faint:#6c7794;
  --rc:#6d8af5; --rc-d:#5b7df0; --ok:#5dd49e;
}
html[data-theme="dark"] .cmd .cp:hover{background:#333a54}
html[data-theme="dark"] .r-ring{border-color:rgba(255,255,255,.09)}

/* ── Dark-mode toggle ──────────────────────────────────────────────────── */
.theme-toggle{flex:none;display:inline-flex;align-items:center;justify-content:center;width:26px;height:26px;margin-left:2px;background:none;border:1px solid var(--line);border-radius:7px;color:var(--dim);cursor:pointer;padding:0;transition:color .2s,border-color .2s}
.theme-toggle:hover{color:var(--text)}
.theme-toggle .icon-moon{display:block}
.theme-toggle .icon-sun{display:none}
html[data-theme="dark"] .theme-toggle .icon-moon{display:none}
html[data-theme="dark"] .theme-toggle .icon-sun{display:block}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);border:0}

/* ── Logo ──────────────────────────────────────────────────────────────── */
.wm{position:absolute;top:24px;left:28px;display:flex;align-items:center;gap:10px;font-size:18px;font-weight:700;letter-spacing:-.01em;color:var(--text);z-index:3}
.wm .mark{color:var(--rc);transition:color .5s}

/* ── Reset ─────────────────────────────────────────────────────────────── */
.replay{position:absolute;top:22px;right:26px;display:flex;align-items:center;gap:6px;background:var(--bg2);border:1px solid var(--line);border-radius:8px;color:var(--dim);padding:7px 13px;font:inherit;font-size:13px;cursor:pointer;opacity:0;pointer-events:none;transition:.3s;z-index:20}
.replay:hover{color:var(--text)}
#app.running:not([data-state="conn"]) .replay{opacity:1;pointer-events:auto}

/* ── Hero ──────────────────────────────────────────────────────────────── */
.hero{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;padding:88px 24px}
.head{position:relative;z-index:7;margin:0;font-size:clamp(42px,7vw,70px);font-weight:800;letter-spacing:-.025em;line-height:1.04;color:var(--text)}
/* caret: underscore at the edit point (swap to a bar: height:.9em; transform:translateY(.08em)) */
.head .caret{display:inline-block;width:0;height:.1em;background:var(--rc);vertical-align:baseline;transform:translateY(.06em);opacity:0;transition:width .15s ease,background .5s}
#app.s-caret .head .caret{width:.55ch;opacity:1;animation:blink 1.05s step-end infinite}
#app .head.typing .caret{animation:none;opacity:1}
@keyframes blink{50%{opacity:0}}
/* fixed tail recedes so the eye stays on the changing word */
.head .tail{transition:color .6s ease}
#app.s-dim .head .tail{color:#8d97a5}
.hero .sub{margin:22px 0 0;font-size:clamp(15px,2vw,18px);line-height:1.55;color:var(--dim);max-width:530px}

/* fade these out first */
.ph{transition:opacity 1s ease,transform .9s ease}
#app.s-fade .ph{opacity:0;transform:translateY(-10px);pointer-events:none}

/* connect row + curl box */
.runner{margin-top:38px;width:min(620px,92vw)}
.runrow{display:flex;align-items:center;justify-content:space-between;margin-bottom:7px}
.runrow .lbl{font-size:13px;font-weight:500;color:var(--dim)}

.cmd{display:flex;width:100%;background:var(--bg2);border:1px solid var(--line);border-radius:12px;overflow:hidden;box-shadow:0 1px 2px rgba(20,28,46,.05)}
.cmd code{flex:1;padding:16px 19px;font-family:var(--font-mono,ui-monospace,SFMono-Regular,Menlo,monospace);font-size:14px;text-align:left;white-space:nowrap;overflow-x:auto;color:var(--text)}
.cmd code .t{color:var(--rc);transition:color .5s}
.cmd .cp{flex:none;border:none;border-left:1px solid var(--line);background:transparent;color:var(--text);font-weight:500;padding:0 24px;font-size:14px;font-family:inherit;cursor:pointer;transition:background .15s}
.cmd .cp:hover{background:#f0f2f6}

/* ── Radar receiver ─ decorative (never intercepts clicks) ─────────────── */
.radar{position:relative;width:140px;height:140px;margin:20px auto 0;transition:transform 1.3s cubic-bezier(.4,.1,.2,1);z-index:6;pointer-events:none}
.radar>*{position:absolute;left:50%;top:50%}
.r-ring{border-radius:50%;border:1px solid rgba(22,29,46,.07);transform:translate(-50%,-50%)}
.r-ring.big{opacity:0;transition:opacity 1.1s ease}
#app.s-grow .r-ring.big{opacity:1}
.r-core{width:14px;height:14px;border-radius:5px;background:var(--rc);transform:translate(-50%,-50%) rotate(45deg);transition:background .5s,transform 1.1s ease;animation:breathe 3.2s ease-in-out infinite;z-index:2}
.r-core::after{content:"";position:absolute;inset:4px;background:var(--bg);border-radius:2px}
#app.s-grow .r-core{transform:translate(-50%,-50%) rotate(45deg) scale(1.5)}
@keyframes breathe{0%,100%{opacity:.85}50%{opacity:1}}

.r-ping{width:30px;height:30px;border-radius:50%;border:1.5px solid var(--rc);opacity:0;transform:translate(-50%,-50%) scale(.4);animation:rping 3.6s ease-out infinite;transition:border-color .5s}
@keyframes rping{0%{transform:translate(-50%,-50%) scale(.4);opacity:.5}80%{opacity:0}100%{transform:translate(-50%,-50%) scale(4.5);opacity:0}}
@keyframes rpingBig{0%{transform:translate(-50%,-50%) scale(.4);opacity:.55}85%{opacity:0}100%{transform:translate(-50%,-50%) scale(17);opacity:0}}
#app.s-grow .r-ping{animation-name:rpingBig;animation-duration:6.5s}

.r-sweep{width:250px;height:2px;background:linear-gradient(90deg,transparent,var(--rc));transform-origin:left center;transform:translateY(-1px) rotate(0);opacity:0;transition:opacity .4s}
#app:is([data-state="detect"],[data-state="lock"]) .r-sweep{opacity:.7;animation:rsweep 3.4s linear infinite}
@keyframes rsweep{to{transform:translateY(-1px) rotate(360deg)}}

.r-bloom{width:30px;height:30px;border-radius:50%;background:var(--rc);transform:translate(-50%,-50%) scale(0);opacity:0}
#app[data-state="arrive"] .r-bloom{animation:rbloom 1300ms ease-out}
@keyframes rbloom{0%{transform:translate(-50%,-50%) scale(.3);opacity:.4}100%{transform:translate(-50%,-50%) scale(10);opacity:0}}

/* ── Agent contact ─────────────────────────────────────────────────────── */
#agent{position:fixed;width:15px;height:15px;border-radius:50%;background:var(--rc);transform:translate(-50%,-50%) scale(0);opacity:0;z-index:8;pointer-events:none;transition:opacity .5s,transform .5s,background .4s}
#agent.travel{transition:left 1.2s cubic-bezier(.34,.05,.2,1),top 1.2s cubic-bezier(.34,.05,.2,1),opacity .5s,transform .5s,background .4s}
#agent::after{content:"";position:absolute;inset:-10px;border-radius:50%;border:1.6px solid var(--rc);opacity:0;transform:scale(.5);transition:.5s}
#app:is([data-state="detect"],[data-state="lock"],[data-state="arrive"]) #agent{opacity:1;transform:translate(-50%,-50%) scale(1)}
#app:is([data-state="lock"],[data-state="arrive"]) #agent::after{opacity:1;transform:scale(1)}
#app[data-state="conn"] #agent{opacity:0;transform:translate(-50%,-50%) scale(0)}

.foot{margin-top:30px;font-size:14.5px;color:var(--faint)}
.foot .simu{background:none;border:none;font:inherit;color:var(--rc);font-weight:600;cursor:pointer;padding:0}
.foot .simu:hover{text-decoration:underline}

/* ── Disclosure: plain-language "what termino can & can't do" (spec §9) ─── */
.disclose{margin-top:40px;width:min(720px,92vw);display:grid;grid-template-columns:1fr 1fr;gap:18px;text-align:left}
.disclose .dcol{background:var(--bg2);border:1px solid var(--line);border-radius:12px;padding:16px 18px}
.disclose h2{margin:0 0 9px;font-size:12px;font-weight:600;letter-spacing:.02em;text-transform:uppercase;color:var(--dim)}
.disclose ul{margin:0;padding:0;list-style:none;display:flex;flex-direction:column;gap:8px}
.disclose li{position:relative;padding-left:18px;font-size:13.5px;line-height:1.5;color:var(--dim)}
.disclose li::before{content:"";position:absolute;left:2px;top:8px;width:6px;height:6px;border-radius:50%;background:var(--rc)}
.disclose li b{color:var(--text);font-weight:600}
@media(max-width:640px){.disclose{grid-template-columns:1fr}}

/* ── Console (teaser — replaced by /c/{sid} navigation in Phase 4) ─────── */
.console{position:fixed;inset:0;background:var(--bg);display:flex;flex-direction:column;opacity:0;transform:scale(.99);pointer-events:none;transition:opacity .6s ease,transform .6s ease;z-index:10}
#app[data-state="conn"] .console{opacity:1;transform:none;pointer-events:auto}
.chead{display:flex;align-items:center;gap:10px;padding:13px 20px;border-bottom:1px solid var(--line);font-family:var(--font-mono,ui-monospace,SFMono-Regular,Menlo,monospace);font-size:13px;color:var(--dim)}
.chead .d{width:8px;height:8px;border-radius:50%;background:var(--ok)}
.chead b{color:var(--text);font-weight:600}
.chead .x{margin-left:auto;background:none;border:1px solid var(--line);border-radius:7px;color:var(--dim);font:inherit;font-size:12.5px;padding:6px 13px;cursor:pointer}
.chead .x:hover{color:var(--text);background:#f0f2f6}
.csplit{flex:1;display:grid;grid-template-columns:1fr 1fr;min-height:0}
.cchat{background:#f6f7f9;padding:24px;border-right:1px solid var(--line);overflow:auto}
.cchat .who{font-size:10px;letter-spacing:.07em;text-transform:uppercase;color:#9097a2;margin-bottom:6px}
.cchat .bub{background:#fff;border:1px solid #e7eaef;border-radius:14px;border-bottom-left-radius:4px;padding:12px 15px;font-size:14px;color:#15181d;line-height:1.5;max-width:440px}
.cterm{background:#0c0f15;padding:22px;font-family:var(--font-mono,ui-monospace,SFMono-Regular,Menlo,monospace);font-size:13px;color:#8b97a8;line-height:1.75;overflow:auto}
.cterm .ok{color:#5fd0a6}

@media(max-width:640px){
  .csplit{grid-template-columns:1fr;grid-template-rows:1fr 1fr}
  .cchat{border-right:none;border-bottom:1px solid var(--line)}
}
@media(prefers-reduced-motion:reduce){
  .r-core,.r-ping,.r-sweep,.head .caret{animation:none!important}
  #agent,.console,.ph,.radar{transition-duration:.05ms!important}
}

/* ── Version footer ────────────────────────────────────────────────────── */
.vfoot{position:absolute;bottom:18px;left:0;right:0;display:flex;align-items:center;justify-content:center;font-size:12px;z-index:5;pointer-events:auto;letter-spacing:.01em;opacity:.35;transition:opacity .3s}
.vfoot:hover{opacity:.7}
.vfoot .vtag{font-family:var(--font-mono,ui-monospace,SFMono-Regular,Menlo,monospace);color:var(--faint)}