/* IHM Email Hub: sign-in and invite pages. The "Cobalt Proof" system from IHM Reports (same tokens, type, grid,
   strike-through line, crop marks and clipped button) so both sites read as one company; the hub adds its own sheet ids
   (Hub 01 / Hub 02) and a stack of email proof cards on the stage. */
:root{
  --bg:#080B12; --bg-deep:#05070C; --bg-raise:#0B0F18; --panel:#20263A;
  --ink:#F4F0E8; --ink-2:rgba(244,240,232,.74); --ink-3:rgba(244,240,232,.62);
  --rule:rgba(244,240,232,.14); --rule-2:rgba(244,240,232,.44);
  --cobalt:#315CFF; --note:#AAB8FF; --note-text:#AAB8FF; --on-cobalt:#FFFDF8;
  --field:#0B0F18; --field-hover:#0E1320;
  --grid:rgba(244,240,232,.035); --grid-strong:rgba(170,184,255,.07);
  --glow:rgba(49,92,255,.22); --ring:rgba(49,92,255,.38);
  --card:#0D121D; --card-line:rgba(170,184,255,.30); --card-fill:rgba(170,184,255,.10); --good:#7EE2B8;
  --display:'Syne','Arial Black',sans-serif;
  --body:'Manrope',system-ui,-apple-system,'Segoe UI',Arial,sans-serif;
  --pad:clamp(1.25rem,4.4vw,4.5rem);
  --ease:cubic-bezier(.7,0,.2,1); --ease-out:cubic-bezier(.16,1,.3,1);
  color-scheme:dark;
}
@media (prefers-color-scheme: light){
  :root{
    --bg:#F4F0E8; --bg-deep:#EEE8DC; --bg-raise:#F7F3EC; --panel:#E4DDCF;
    --ink:#080B12; --ink-2:rgba(8,11,18,.74); --ink-3:rgba(8,11,18,.64);
    --rule:rgba(8,11,18,.14); --rule-2:rgba(8,11,18,.46);
    --note:#2949C7; --note-text:#2949C7;
    --field:#FFFDF8; --field-hover:#FFFFFF;
    --grid:rgba(8,11,18,.045); --grid-strong:rgba(41,73,199,.08);
    --glow:rgba(49,92,255,.07); --ring:rgba(49,92,255,.30);
    --card:#FFFDF8; --card-line:rgba(41,73,199,.38); --card-fill:rgba(41,73,199,.08); --good:#11865A;
    color-scheme:light;
  }
}
*,*::before,*::after{box-sizing:border-box}
html{background:var(--bg);-webkit-text-size-adjust:100%}
body{margin:0;min-height:100vh;min-height:100svh;background:var(--bg);color:var(--ink);font-family:var(--body);font-size:1rem;line-height:1.55;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;overflow-x:clip}
::selection{background:var(--cobalt);color:var(--on-cobalt)}
img{display:block;max-width:100%}
button,input{font:inherit;color:inherit}
:focus-visible{outline:2px solid var(--note);outline-offset:3px}
.nw{white-space:nowrap}
.sr-only{position:absolute!important;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}
[hidden]{display:none!important}

/* ---------- Layout ---------- */
.page{min-height:100vh;min-height:100svh;display:grid;grid-template-columns:minmax(0,1fr)}
@media (min-width:960px){.page{grid-template-columns:minmax(0,1.35fr) minmax(26rem,1fr)}.page.solo{grid-template-columns:minmax(0,1fr)}}

/* Stage: the proof sheet */
.stage{position:relative;isolation:isolate;overflow:hidden;display:flex;flex-direction:column;gap:1.75rem;padding:calc(1.1rem + env(safe-area-inset-top)) var(--pad) 2rem;background:radial-gradient(60rem 36rem at 78% 18%,var(--glow),transparent 62%),linear-gradient(160deg,var(--bg-raise),var(--bg-deep) 70%)}
@media (min-width:960px){.stage{justify-content:space-between;padding-top:2.5rem;padding-bottom:3.25rem;border-right:1px solid var(--rule)}.solo .stage{border-right:0}}
.stage::before{content:"";position:absolute;inset:0;z-index:-2;background-image:linear-gradient(var(--grid) 1px,transparent 1px),linear-gradient(90deg,var(--grid) 1px,transparent 1px),linear-gradient(var(--grid-strong) 1px,transparent 1px),linear-gradient(90deg,var(--grid-strong) 1px,transparent 1px);background-size:2rem 2rem,2rem 2rem,8rem 8rem,8rem 8rem;background-position:-1px -1px;-webkit-mask-image:radial-gradient(120% 90% at 30% 40%,#000 35%,transparent 85%);mask-image:radial-gradient(120% 90% at 30% 40%,#000 35%,transparent 85%);animation:grid-in 1.6s var(--ease-out) both}
.topline{display:flex;align-items:center;justify-content:space-between;gap:1rem}
.logo{width:184px;height:auto;aspect-ratio:2048/705;margin:-4px 0 -4px -6px}
@media (min-width:960px){.logo{width:208px}}
.logo img{width:100%;height:auto}
.logo .for-light{display:none}
@media (prefers-color-scheme: light){.logo .for-dark{display:none}.logo .for-light{display:block}}
.sheet-id{display:none;margin:0;font-size:.66rem;font-weight:700;letter-spacing:.16em;text-transform:uppercase;color:var(--ink-3);white-space:nowrap}
.sheet-id b{color:var(--note-text);font-weight:800}
@media (min-width:600px){.sheet-id{display:block}}

.hero{position:relative}
.eyebrow{display:inline-flex;align-items:center;gap:.65rem;margin:0 0 1.1rem;color:var(--note-text);font-size:.72rem;font-weight:800;letter-spacing:.16em;line-height:1;text-transform:uppercase}
.eyebrow::before{content:"";width:1.75rem;height:2px;background:var(--cobalt)}
h1{margin:0;font-family:var(--display);font-weight:700;letter-spacing:-.045em;line-height:.95;font-size:clamp(2.3rem,9.6vw,3.4rem);text-wrap:balance}
@media (min-width:960px){h1{font-size:clamp(3.6rem,5.9vw,6.4rem)}}
h1 .ln{display:block;clip-path:inset(-.1em -300vw -.02em -300vw);padding-bottom:.08em;margin-bottom:-.08em}
h1 .ln>span{display:inline-block;animation:rise .95s var(--ease-out) both}
h1 .ln:nth-child(2)>span{animation-delay:.08s}
h1 .ln:nth-child(3)>span{animation-delay:.16s}
/* the Bar Through Stroke: one cobalt line, edge to edge, through the last line of the headline */
h1 .strike{position:relative;z-index:0}
h1 .strike::before{content:"";position:absolute;z-index:-1;left:calc(-1 * var(--pad) - 2px);width:200vw;top:86%;height:max(4px,.065em);background:var(--cobalt);transform-origin:0 50%;animation:draw 1.05s var(--ease) .32s both;box-shadow:0 0 22px rgba(49,92,255,.45)}
.lead{max-width:34rem;margin:1.1rem 0 0;color:var(--ink-2);font-size:clamp(1rem,1.15vw,1.15rem);line-height:1.55;animation:fade .9s var(--ease-out) .45s both}
.lead b{color:var(--ink);font-weight:700}
.marks{display:none}
@media (min-width:960px){
  .marks{display:flex;gap:2.5rem;margin:0;padding:1.1rem 0 0;border-top:1px solid var(--rule);list-style:none;font-size:.7rem;font-weight:700;letter-spacing:.14em;text-transform:uppercase;color:var(--ink-3);animation:fade 1s var(--ease-out) .7s both}
  .marks li{display:flex;align-items:center;gap:.55rem}
  .marks li::before{content:"";width:6px;height:6px;border:1.5px solid var(--note);transform:rotate(45deg)}
}

/* ---------- The hub's own mark: a stack of email proofs on the stage ---------- */
.proofs{display:none;position:absolute;z-index:-1;top:clamp(5.5rem,11vh,8rem);right:clamp(-1rem,2vw,3rem);width:clamp(15rem,23vw,21rem);aspect-ratio:3/4;pointer-events:none}
@media (min-width:960px){.proofs{display:block}}
.proof{position:absolute;inset:0;width:62%;height:auto;aspect-ratio:300/520;border:1px solid var(--card-line);background:var(--card);box-shadow:0 24px 60px rgba(0,0,0,.35);animation:deal 1.1s var(--ease-out) both}
.proof svg{display:block;width:100%;height:100%}
.proof.p1{left:0;top:10%;transform:rotate(-9deg);opacity:.55;animation-delay:.35s}
.proof.p2{left:20%;top:3%;transform:rotate(-2deg);opacity:.8;animation-delay:.5s}
.proof.p3{left:38%;top:0;transform:rotate(6deg);animation-delay:.65s}
.proof .tag{position:absolute;top:.6rem;left:.6rem;padding:.18rem .45rem;background:var(--cobalt);color:var(--on-cobalt);font-size:.62rem;font-weight:800;letter-spacing:.1em;text-transform:uppercase;line-height:1.3}
.proof .stamp{position:absolute;right:-.9rem;bottom:18%;padding:.32rem .6rem;border:1.5px solid var(--good);color:var(--good);font-size:.66rem;font-weight:800;letter-spacing:.16em;text-transform:uppercase;transform:rotate(-12deg);background:color-mix(in srgb,var(--card) 82%,transparent);animation:stamp .5s var(--ease-out) 1.35s both}
@media (prefers-color-scheme: light){.proof{box-shadow:0 18px 40px rgba(8,11,18,.12)}}

/* ---------- Form column ---------- */
.side{position:relative;display:flex;flex-direction:column;padding:2.25rem var(--pad) calc(1.5rem + env(safe-area-inset-bottom))}
@media (min-width:960px){.side{padding:2.5rem clamp(2.5rem,4.5vw,5rem) 2rem;justify-content:center}}
.sheet{position:relative;width:100%;max-width:25rem;margin:0 auto;animation:lift .9s var(--ease-out) .25s both}
@media (min-width:960px){.sheet{margin:auto}}
.crop{position:absolute;width:14px;height:14px;pointer-events:none;border-color:var(--rule-2);border-style:solid;border-width:0;animation:fade .6s ease 1s both}
.crop.tl{top:-22px;left:-22px;border-top-width:1px;border-left-width:1px}
.crop.tr{top:-22px;right:-22px;border-top-width:1px;border-right-width:1px}
.crop.bl{bottom:-22px;left:-22px;border-bottom-width:1px;border-left-width:1px}
.crop.br{bottom:-22px;right:-22px;border-bottom-width:1px;border-right-width:1px}
@media (max-width:480px){.crop{display:none}}
h2{margin:0;font-family:var(--display);font-weight:700;font-size:1.9rem;letter-spacing:-.035em;line-height:1}
.sub{margin:.65rem 0 1.9rem;color:var(--ink-3);font-size:.95rem}

.field{margin:0 0 1.15rem}
.label-row{display:flex;align-items:baseline;justify-content:space-between;gap:1rem;margin-bottom:.5rem}
label{font-size:.8rem;font-weight:700;letter-spacing:.06em;text-transform:uppercase}
.opt{font-size:.72rem;font-weight:600;color:var(--ink-3);letter-spacing:.02em}
.control{position:relative;display:flex;align-items:stretch;background:var(--field);border:1px solid var(--rule-2);transition:border-color .18s ease,box-shadow .18s ease,background-color .18s ease}
.control:hover{background:var(--field-hover)}
.control:focus-within{border-color:var(--cobalt);box-shadow:0 0 0 3px var(--ring)}
.control[data-invalid]{border-color:var(--note);box-shadow:inset 3px 0 0 var(--note)}
.control[data-invalid]:focus-within{box-shadow:inset 3px 0 0 var(--note),0 0 0 3px var(--ring)}
.control input{flex:1;min-width:0;height:3.25rem;padding:0 1rem;border:0;background:transparent;font-size:1rem;font-weight:500;letter-spacing:.01em;outline:none}
.control input::placeholder{color:var(--ink-3);opacity:.8}
.control input:-webkit-autofill{-webkit-text-fill-color:var(--ink);-webkit-box-shadow:0 0 0 100px var(--field) inset;caret-color:var(--ink)}
.reveal{flex:none;display:inline-flex;align-items:center;gap:.4rem;margin:.45rem;padding:0 .7rem;border:0;background:transparent;color:var(--ink-2);font-size:.7rem;font-weight:800;letter-spacing:.12em;text-transform:uppercase;cursor:pointer;border-radius:2px}
.reveal:hover{color:var(--ink);background:var(--rule)}
.reveal svg{width:16px;height:16px}
.hint{margin:.5rem 0 0;font-size:.82rem;color:var(--ink-3)}
.caps{display:flex;align-items:center;gap:.45rem;margin:.55rem 0 0;font-size:.82rem;font-weight:600;color:var(--note-text)}
.caps kbd{font:inherit;font-size:.68rem;font-weight:800;letter-spacing:.08em;padding:.12rem .4rem;border:1px solid currentColor;border-radius:3px}

/* password strength: four ticks that fill as it gets longer */
.meter{display:grid;grid-template-columns:repeat(4,1fr);gap:4px;margin:.6rem 0 0}
.meter i{height:3px;background:var(--rule);transition:background-color .2s ease}
.meter[data-n="1"] i:nth-child(-n+1),.meter[data-n="2"] i:nth-child(-n+2){background:var(--note)}
.meter[data-n="3"] i:nth-child(-n+3),.meter[data-n="4"] i{background:var(--cobalt)}
.meter-t{display:flex;justify-content:space-between;margin:.4rem 0 0;font-size:.78rem;color:var(--ink-3)}
.meter-t b{color:var(--ink-2);font-weight:700}

/* inline state: an editor's margin note */
.note{position:relative;margin:0 0 1.35rem;padding:.85rem 1rem .9rem 1.1rem;background:linear-gradient(90deg,rgba(49,92,255,.14),rgba(49,92,255,.02));border-left:2px solid var(--cobalt);animation:note-in .55s var(--ease-out) both}
.note-k{display:block;margin-bottom:.2rem;font-size:.66rem;font-weight:800;letter-spacing:.16em;text-transform:uppercase;color:var(--note-text)}
.note-t{margin:0;font-size:.92rem;font-weight:600;line-height:1.45}
.note-t span{display:block;margin-top:.15rem;font-weight:500;color:var(--ink-2)}

.submit{position:relative;display:flex;width:100%;min-height:3.4rem;align-items:center;justify-content:space-between;gap:1rem;margin-top:.4rem;padding:0 1.25rem;border:0;background:var(--cobalt);color:var(--on-cobalt);font-size:.85rem;font-weight:800;letter-spacing:.12em;text-transform:uppercase;cursor:pointer;overflow:hidden;clip-path:polygon(0 0,calc(100% - .8rem) 0,100% .8rem,100% 100%,0 100%);transition:transform .18s ease,background-color .18s ease;text-decoration:none}
.submit:hover{background:#2A52F0;transform:translateY(-1px)}
.submit:active{transform:translateY(0)}
.submit:focus-visible{outline:none;box-shadow:inset 0 0 0 2px var(--on-cobalt),inset 0 0 0 4px var(--cobalt)}
.submit .arrow{transition:transform .2s var(--ease-out);font-size:1.15rem;line-height:1}
.submit:hover .arrow{transform:translateX(4px)}
.submit .bar{position:absolute;left:0;bottom:0;height:3px;width:40%;background:var(--on-cobalt);opacity:0}
.submit[aria-busy="true"]{cursor:progress}
.submit[aria-busy="true"] .bar{opacity:.9;animation:scan 1.1s var(--ease) infinite}
.submit[aria-busy="true"] .arrow{opacity:0}
.submit.inline{display:inline-flex;width:auto;min-width:12rem;margin-top:1.75rem}

.help{margin:1.35rem 0 0;font-size:.85rem;color:var(--ink-3)}
.foot{display:flex;align-items:center;justify-content:center;gap:.55rem;margin-top:2.5rem;text-align:center;font-size:.68rem;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:var(--ink-3)}
.foot svg{width:12px;height:12px;flex:none}
@media (min-width:960px){.foot{position:absolute;left:0;right:0;bottom:1.75rem;margin:0}}
.solo .foot{justify-content:flex-start;position:static;margin:0}

/* checking an invite: a quiet shimmer where the headline will be */
.skel{display:block;height:clamp(2.3rem,6vw,5.5rem);width:min(34rem,80%);background:linear-gradient(90deg,var(--rule),rgba(170,184,255,.18),var(--rule));background-size:200% 100%;animation:shimmer 1.3s linear infinite}

/* ---------- Motion (once, CSS only) ---------- */
@keyframes draw{from{transform:scaleX(0)}to{transform:scaleX(1)}}
@keyframes rise{from{transform:translateY(105%)}to{transform:none}}
@keyframes fade{from{opacity:0}to{opacity:1}}
@keyframes lift{from{opacity:0;transform:translateY(14px)}to{opacity:1;transform:none}}
@keyframes grid-in{from{opacity:0;transform:scale(1.04)}to{opacity:1;transform:none}}
@keyframes note-in{from{opacity:0;transform:translateX(-8px)}to{opacity:1;transform:none}}
@keyframes scan{from{transform:translateX(-100%)}to{transform:translateX(260%)}}
@keyframes deal{from{opacity:0;translate:0 26px}to{translate:0 0}}
@keyframes stamp{from{opacity:0;scale:1.6}to{opacity:1;scale:1}}
@keyframes shimmer{from{background-position:200% 0}to{background-position:-200% 0}}
@media (prefers-reduced-motion: reduce){
  *,*::before,*::after{animation:none!important;transition:none!important}
  .submit[aria-busy="true"] .bar{width:100%;opacity:.6}
}