/* ZERO FAFF contact: a conversation, one question at a time, each in its own colour world from the palette.
   Built on the case study styles (our-work/case.css) for the frame, grain, wordmark, sparkles and timeline. */
:root{--navy:#26364A}

/* ---------- the stage and its colour worlds ---------- */
.cx{--bg:var(--blue);--fg:var(--ink);--mute:rgba(17,23,27,.72);--line:rgba(17,23,27,.18);--line-strong:rgba(17,23,27,.42);--accent:var(--ink);--sh:var(--ink);
  display:flex;flex-direction:column;min-height:calc(100svh - var(--fp) * 2);padding:clamp(18px,2.6vw,32px) var(--pad) clamp(84px,9vh,110px);
  background-color:var(--bg);color:var(--fg);transition:background-color .8s cubic-bezier(.6,0,.2,1),color .5s ease}
.cx[data-w="harbour"]{--bg:var(--harbour);--fg:var(--canvas);--mute:rgba(244,241,234,.74);--line:rgba(244,241,234,.16);--line-strong:rgba(244,241,234,.44);--accent:var(--mist);--sh:#0B1418}
.cx[data-w="cognac"]{--bg:var(--cognac);--fg:var(--paper);--mute:rgba(251,249,245,.76);--line:rgba(251,249,245,.16);--line-strong:rgba(251,249,245,.44);--accent:var(--mist);--sh:#2A1810}
.cx[data-w="moss"]{--bg:var(--moss);--fg:var(--paper);--mute:rgba(251,249,245,.76);--line:rgba(251,249,245,.16);--line-strong:rgba(251,249,245,.44);--accent:var(--stone);--sh:#23291F}
.cx[data-w="claret"]{--bg:var(--claret);--fg:var(--paper);--mute:rgba(251,249,245,.78);--line:rgba(251,249,245,.16);--line-strong:rgba(251,249,245,.44);--accent:var(--stone);--sh:#2A1218}
.cx[data-w="navy"]{--bg:var(--navy);--fg:var(--paper);--mute:rgba(251,249,245,.74);--line:rgba(251,249,245,.15);--line-strong:rgba(251,249,245,.42);--accent:var(--mist);--sh:#0E151E}
.solo .cx{min-height:calc(100svh - var(--fp) * 2 - var(--bar))}
.cx .top{position:relative;z-index:5}
.cx-email a{color:var(--fg);text-decoration-thickness:1.5px;text-underline-offset:3px;text-transform:none;letter-spacing:.02em}

/* ---------- the questions ---------- */
.cx-form{position:relative;z-index:4;flex:1;display:flex;align-items:center;padding-top:clamp(28px,5vh,60px)}
.hp{position:absolute;left:-9999px;width:1px;height:1px;overflow:hidden}
.step{width:100%}
.step-in{width:min(100%,1060px);margin:0 auto}
.kick,.num{font-size:clamp(15px,1.3vw,19px);font-weight:750;letter-spacing:.08em;text-transform:uppercase;color:var(--mute)}
.num{margin-bottom:clamp(14px,2vh,22px)}
.cx-title{margin-top:clamp(8px,1.4vh,16px);font-size:clamp(64px,min(11vw,17vh),220px);line-height:.84;font-weight:900;text-transform:uppercase;letter-spacing:0;color:var(--fg)}
.lede{margin-top:clamp(14px,2.6vh,30px);max-width:50ch;font-size:clamp(17px,min(1.6vw,2.6vh),24px);line-height:1.38;color:var(--mute);text-wrap:pretty}
.q{display:block;max-width:20ch;font-family:"Melodrama",serif;font-weight:500;font-size:clamp(40px,min(5.4vw,9vh),90px);line-height:.98;letter-spacing:-.01em;color:var(--fg);text-wrap:balance}
.q .w{display:inline-block;margin-right:.24em}
.q .w:last-child{margin-right:0}
.ans{display:block;width:100%;margin-top:clamp(24px,4vh,44px);padding:.08em 0 .16em;border:0;border-bottom:3px solid var(--line-strong);border-radius:0;background:none;color:var(--fg);caret-color:var(--accent);font:inherit;font-size:clamp(32px,4.6vw,68px);font-weight:800;letter-spacing:.01em;outline:none;transition:border-color .25s}
.ans::placeholder{color:var(--fg);opacity:.32}
.ans:focus{border-bottom-color:var(--fg)}
.ans[aria-invalid="true"]{border-bottom-color:var(--brass)}
.hint{margin-top:14px;font-size:clamp(16px,1.3vw,19px);color:var(--mute)}
.err{min-height:0;margin-top:12px}
.err:not(:empty){display:inline-flex;align-items:center;gap:8px;padding:7px 14px 7px 12px;border:2px solid #000;border-radius:999px;background:var(--paper);color:var(--ink);font-size:16px;font-weight:700;box-shadow:3px 3px 0 #000;animation:nudge .4s cubic-bezier(.3,1.6,.5,1)}
.err:not(:empty)::before{content:"!";display:grid;place-items:center;width:20px;height:20px;border-radius:50%;background:var(--claret);color:var(--paper);font-size:13px;font-weight:900}
.err a{font-weight:800}
@keyframes nudge{0%{transform:translateX(0)}30%{transform:translateX(-8px)}60%{transform:translateX(6px)}100%{transform:none}}

/* ---------- buttons: paper pills outlined in ink with a hard shadow, like the rest of the site ---------- */
.acts{display:flex;flex-wrap:wrap;align-items:center;gap:14px 22px;margin-top:clamp(26px,4.4vh,46px)}
.btn{display:inline-flex;align-items:center;gap:12px;height:58px;padding:0 22px 0 26px;border:2.5px solid #000;border-radius:999px;background:var(--paper);color:var(--ink);font:inherit;font-size:19px;font-weight:850;letter-spacing:.05em;text-transform:uppercase;text-decoration:none;white-space:nowrap;box-shadow:4px 4px 0 #000;cursor:pointer;transition:transform .2s cubic-bezier(.2,.8,.2,1),box-shadow .2s cubic-bezier(.2,.8,.2,1),background-color .2s}
.btn svg{width:22px;height:22px;fill:none;stroke:currentColor;stroke-width:2.6;stroke-linecap:round;stroke-linejoin:round;transition:transform .25s cubic-bezier(.2,.8,.2,1)}
.btn:hover,.btn:focus-visible{transform:translate(-2px,-2px);box-shadow:6px 6px 0 #000}
.btn:hover svg{transform:translateX(3px)}
.btn:active{transform:translate(2px,2px);box-shadow:1px 1px 0 #000}
.btn-go{background:var(--ink);color:var(--canvas)}
.btn-send{background:var(--brass);color:var(--ink)}
.btn.busy{pointer-events:none;opacity:.8}
.btn.busy svg{animation:spin .8s linear infinite;stroke-dasharray:40 20}
@keyframes spin{to{transform:rotate(360deg)}}
.btn-back{border:0;background:none;color:var(--mute);font:inherit;font-size:16px;font-weight:750;letter-spacing:.07em;text-transform:uppercase;text-decoration:underline;text-decoration-thickness:1.5px;text-underline-offset:4px;cursor:pointer}
.btn-back:hover{color:var(--fg)}
.aside{font-size:15px;font-weight:700;letter-spacing:.07em;text-transform:uppercase;color:var(--mute)}

/* ---------- what can we sort: seven picture tiles ---------- */
.tiles-set{border:0;min-width:0}
.tiles{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px;margin-top:clamp(22px,3.6vh,36px)}
.tile{position:relative;display:block;cursor:pointer}
.tile input{position:absolute;opacity:0;pointer-events:none}
.tile-in{position:relative;display:flex;flex-direction:column;justify-content:space-between;gap:12px;height:100%;min-height:clamp(118px,15vh,150px);padding:16px 16px 14px;border:2.5px solid #000;border-radius:18px;background:var(--paper);color:var(--ink);box-shadow:5px 5px 0 #000;transition:transform .2s cubic-bezier(.2,.8,.2,1),box-shadow .2s cubic-bezier(.2,.8,.2,1),background-color .2s}
.tile-in svg{display:block;width:auto;height:clamp(44px,6vh,58px);max-width:72px;overflow:visible}
.tile-in b{font-size:clamp(16px,1.25vw,19px);font-weight:850;line-height:1.08;letter-spacing:.03em;text-transform:uppercase}
.tile-in::after{content:"";position:absolute;top:12px;right:12px;width:24px;height:24px;border:2.5px solid #000;border-radius:50%;background:#fff}
.tile:hover .tile-in{transform:translate(-2px,-2px) rotate(-.6deg);box-shadow:7px 7px 0 #000}
.tile input:focus-visible + .tile-in{outline:3px solid var(--fg);outline-offset:4px}
.tile input:checked + .tile-in{background:var(--brass);transform:translate(-2px,-2px) rotate(-1deg);box-shadow:7px 7px 0 #000}
.tile input:checked + .tile-in::after{background:#000 url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24'><path d='M6 12.5l4 4 8-9' fill='none' stroke='%23fff' stroke-width='3.2' stroke-linecap='round' stroke-linejoin='round'/></svg>") center/16px no-repeat}
.tile:last-child .tile-in{background:var(--canvas)}
.tile:last-child input:checked + .tile-in{background:var(--brass)}

/* ---------- the summary before sending ---------- */
.sum{margin-top:clamp(20px,3.4vh,34px);border-top:2px solid var(--line-strong);max-width:880px}
.sum > div{display:grid;grid-template-columns:minmax(110px,170px) minmax(0,1fr) auto;align-items:baseline;gap:6px 18px;padding:clamp(12px,1.8vh,18px) 0;border-bottom:1.5px solid var(--line)}
.sum dt{font-size:14px;font-weight:750;letter-spacing:.08em;text-transform:uppercase;color:var(--mute)}
.sum dd{min-width:0;font-size:clamp(22px,2.2vw,32px);font-weight:750;line-height:1.15;overflow-wrap:anywhere}
.sum dd.empty{color:var(--mute);font-weight:500}
.edit{border:0;background:none;color:var(--accent);font:inherit;font-size:15px;font-weight:750;letter-spacing:.06em;text-transform:uppercase;text-decoration:underline;text-underline-offset:4px;cursor:pointer}

/* ---------- the character, peeking up from the bottom, eyes on the visitor ---------- */
.cx-peek{position:absolute;right:clamp(24px,9vw,150px);bottom:0;z-index:3;width:clamp(150px,15vw,240px);height:auto;overflow:visible;transform-origin:50% 100%;animation:peekup .8s cubic-bezier(.2,.9,.25,1.3) .9s both}
.cx-peek .skin{fill:color-mix(in srgb,var(--bg) 62%,#fff);transition:fill .8s}
.cx-peek #pl,.cx-peek #pr{transition:transform .35s cubic-bezier(.2,.8,.2,1)}
.cx-peek.bob{animation:bob .55s cubic-bezier(.3,1.5,.5,1)}
.cx-peek.joy{animation:joy 1.1s cubic-bezier(.3,1.4,.5,1)}
@keyframes peekup{from{transform:translateY(100%)}to{transform:none}}
@keyframes bob{0%{transform:none}35%{transform:translateY(14%)}100%{transform:none}}
@keyframes joy{0%{transform:none}25%{transform:translateY(-22%) rotate(-4deg)}50%{transform:translateY(0) rotate(3deg)}70%{transform:translateY(-10%) rotate(-2deg)}100%{transform:none}}

/* ---------- the timeline along the bottom shows how far through the chat they are ---------- */
.cx-ruler{color:var(--fg)}
.cx-ruler button[disabled]{cursor:default;opacity:.38}
.cx-ruler .head{transition:left .7s cubic-bezier(.6,0,.2,1)}
.cx-ruler .done-line{position:absolute;left:0;bottom:0;height:3px;background:currentColor;width:var(--p,0%);transition:width .7s cubic-bezier(.6,0,.2,1)}

/* ---------- moving between questions ---------- */
.js .step{display:none}
.js .step.is-on{display:block}
.js .step.is-on .num,.js .step.is-on .kick{animation:fade .6s ease both}
.js .step.is-on .q .w{animation:rise .55s cubic-bezier(.2,.8,.2,1) both;animation-delay:calc(var(--i,0) * 28ms + .08s)}
.js .step.is-on .ans,.js .step.is-on .hint,.js .step.is-on .lede,.js .step.is-on .sum{animation:fade .6s ease both .32s}
.js .step.is-on .tiles .tile{animation:tilein .55s cubic-bezier(.2,.9,.3,1.25) both;animation-delay:calc(var(--i,0) * 55ms + .28s)}
.js .step.is-on .acts{animation:fade .6s ease both .48s}
.js .step.is-leaving{display:block;animation:leave .28s cubic-bezier(.6,0,.9,.4) both}
.js .step.is-leaving *{animation:none!important}
@keyframes leave{to{opacity:0;transform:translateY(-36px)}}
@keyframes tilein{from{opacity:0;transform:translateY(26px) rotate(-3deg) scale(.94)}to{opacity:1;transform:none}}
.js .step.is-on .q .w{opacity:0;transform:translateY(.45em)}

/* without scripts the questions are one plain form, sent the normal way */
html:not(.js) .step{margin-bottom:56px}
html:not(.js) [data-next],html:not(.js) [data-back],html:not(.js) .step-hello .acts,html:not(.js) .step-check,html:not(.js) .step-sent,html:not(.js) .num{display:none}
html:not(.js) .cx-form{display:block}
.ns-send{margin-top:10px}

/* ---------- a prop beside each question that answers back as they type ---------- */
.step-in.has-prop{display:grid;grid-template-columns:minmax(0,1fr) clamp(250px,27vw,430px);gap:clamp(36px,6vw,110px);align-items:center;width:min(100%,1320px)}
.ask{min-width:0}
.prop{position:relative;color:var(--ink)}
.live{display:inline-block;white-space:nowrap;transform-origin:0 50%}
.live.empty{opacity:.34}
.js .step.is-on .prop{animation:propin .8s cubic-bezier(.2,.9,.3,1.25) both .3s}
@keyframes propin{from{opacity:0;transform:translateY(50px) rotate(7deg) scale(.9)}to{opacity:1;transform:none}}

/* hello: the chat starting, a bubble at a time */
.chat{display:flex;flex-direction:column;gap:14px}
.bubble{position:relative;max-width:88%;padding:14px 18px;border:2.5px solid #000;border-radius:20px;background:var(--paper);box-shadow:5px 5px 0 #000;font-size:clamp(18px,1.5vw,22px);font-weight:700;line-height:1.2}
.bubble.them{align-self:flex-start;border-bottom-left-radius:6px}
.bubble.us{align-self:flex-end;border-bottom-right-radius:6px;background:var(--ink);color:var(--canvas)}
.bubble.typing{display:flex;gap:6px;padding:16px 18px}
.bubble.typing i{width:9px;height:9px;border-radius:50%;background:var(--ink);animation:dot 1.2s ease-in-out infinite}
.bubble.typing i:nth-child(2){animation-delay:.15s}.bubble.typing i:nth-child(3){animation-delay:.3s}
@keyframes dot{0%,60%,100%{transform:none;opacity:.35}30%{transform:translateY(-5px);opacity:1}}
.js .step.is-on .chat{animation:none}
.js .step.is-on .bubble{animation:pop .5s cubic-bezier(.3,1.6,.5,1) both}
.js .step.is-on .bubble:nth-child(1){animation-delay:.5s}.js .step.is-on .bubble:nth-child(2){animation-delay:1.3s}.js .step.is-on .bubble:nth-child(3){animation-delay:2.1s}
.js .step.is-on .bubble.typing i{animation:dot 1.2s ease-in-out infinite}
@keyframes pop{from{opacity:0;transform:translateY(16px) scale(.8)}to{opacity:1;transform:none}}

/* name: a "hello, my name is" sticker that writes itself */
.badge-name{border:2.5px solid #000;border-radius:22px;background:var(--paper);box-shadow:8px 8px 0 #000;overflow:hidden;transform:rotate(-4deg)}
.js .step.is-on .badge-name{animation:propin-tilt .8s cubic-bezier(.2,.9,.3,1.25) both .3s}
@keyframes propin-tilt{from{opacity:0;transform:translateY(50px) rotate(4deg) scale(.9)}to{opacity:1;transform:rotate(-4deg)}}
.bn-top{display:flex;flex-direction:column;align-items:center;padding:16px 16px 12px;background:var(--claret);color:var(--paper);border-bottom:2.5px solid #000}
.bn-top b{font-size:clamp(46px,4.6vw,72px);font-weight:900;line-height:.86;letter-spacing:.02em;text-transform:uppercase}
.bn-top span{margin-top:4px;font-size:clamp(15px,1.2vw,18px);font-weight:750;letter-spacing:.1em;text-transform:uppercase}
.bn-write{display:flex;align-items:center;justify-content:center;height:clamp(110px,10vw,150px);padding:0 22px;font-family:"Melodrama",serif;font-size:clamp(40px,4vw,64px);font-weight:500;overflow:hidden}

/* email: the front of an airmail envelope, addressed as they type, its stamp franked with a Durham postmark */
.envelope{aspect-ratio:3/2;border:2.5px solid #000;border-radius:14px;box-shadow:8px 8px 0 #000;overflow:hidden;transform:rotate(3deg);
  background:repeating-linear-gradient(-45deg,var(--claret) 0 13px,var(--paper) 13px 22px,var(--navy) 22px 35px,var(--paper) 35px 44px)}
.envelope::before{content:"";position:absolute;inset:11px;border:2px solid #000;border-radius:6px;background:var(--paper)}
.js .step.is-on .envelope{animation:propin-env .8s cubic-bezier(.2,.9,.3,1.25) both .3s}
@keyframes propin-env{from{opacity:0;transform:translateY(50px) rotate(-6deg) scale(.9)}to{opacity:1;transform:rotate(3deg)}}
.stamp{position:absolute;top:10%;right:7%;width:13%;height:auto;overflow:visible;transform:rotate(5deg)}
.stamp .st-w{font-family:"Big Shoulders",sans-serif;font-size:15px;font-weight:900;fill:#11171B;letter-spacing:.02em}
.postmark{position:absolute;top:13%;right:23%;width:24%;height:auto;opacity:.62;transform:rotate(-8deg);mix-blend-mode:multiply}
.postmark .pm-t{font-family:"Big Shoulders",sans-serif;font-size:8.5px;font-weight:800;letter-spacing:.1em;fill:#11171B}
.postmark .pm-d{font-family:"Big Shoulders",sans-serif;font-size:8.5px;font-weight:800;letter-spacing:.03em;fill:#11171B}
.post{position:absolute;top:15%;left:10%;padding:3px 9px;border:2px solid #000;border-radius:999px;background:var(--claret);color:var(--paper);font-size:12px;font-weight:800;letter-spacing:.08em;text-transform:uppercase;transform:rotate(-4deg)}
.to{position:absolute;left:11%;top:52%;font-size:13px;font-weight:800;letter-spacing:.1em;text-transform:uppercase;opacity:.6}
.addr{position:absolute;left:11%;right:11%;top:59%;font-size:clamp(20px,2vw,30px);font-weight:800;overflow:hidden}
.lines{position:absolute;left:11%;right:30%;top:78%;display:flex;flex-direction:column;gap:9px}
.lines i{height:2px;background:rgba(17,23,27,.2)}
.lines i:last-child{width:62%}

/* phone: a phone that rings with their number */
.ringer{display:grid;place-items:center}
.pm{position:relative;display:flex;flex-direction:column;align-items:center;width:min(100%,230px);aspect-ratio:9/17;padding:16% 10% 12%;border:9px solid #0d0d0d;border-radius:38px;background:var(--navy);color:var(--paper);box-shadow:0 0 0 2.5px #000,8px 8px 0 #000;text-align:center}
.pm::before{content:"";position:absolute;left:50%;top:7px;width:30%;height:16px;border-radius:999px;background:#0d0d0d;transform:translateX(-50%)}
.pm-top{font-size:13px;font-weight:750;letter-spacing:.12em;text-transform:uppercase;opacity:.7}
.pm-who{margin-top:6px;font-family:"Melodrama",serif;font-size:clamp(28px,2.4vw,36px);line-height:1}
.pm-num{display:block;width:100%;margin-top:14px;font-size:clamp(18px,1.6vw,22px);font-weight:800;letter-spacing:.02em;overflow:hidden}
.pm-btns{display:flex;justify-content:space-between;width:80%;margin-top:auto}
.pm-btns i{width:46px;height:46px;border:2.5px solid #000;border-radius:50%;background:var(--claret)}
.pm-btns i.yes{background:#5F8F5A;animation:answer 1.2s ease-in-out infinite}
@keyframes answer{0%,100%{transform:none}50%{transform:scale(1.12)}}
.rings{position:absolute;inset:0;display:grid;place-items:center;pointer-events:none}
.rings i{position:absolute;width:68%;aspect-ratio:1;border:3px solid var(--fg);border-radius:50%;opacity:0}
.ringer.on .pm{animation:ring .5s ease-in-out infinite}
.ringer.on .rings i{animation:wave 1.8s ease-out infinite}
.ringer.on .rings i:nth-child(2){animation-delay:.6s}.ringer.on .rings i:nth-child(3){animation-delay:1.2s}
@keyframes ring{0%,100%{transform:rotate(0)}20%{transform:rotate(-5deg)}40%{transform:rotate(5deg)}60%{transform:rotate(-3deg)}80%{transform:rotate(3deg)}}
@keyframes wave{from{opacity:.5;transform:scale(.8)}to{opacity:0;transform:scale(1.6)}}

/* the timeline stops short of the character, so he never covers its labels */
.cx-ruler{right:calc(var(--fp) + var(--pad) + clamp(150px,15vw,240px) + 28px)}
.cx-peek{right:calc(var(--pad) - 4px)}
.step-sent .cx-title{font-size:clamp(60px,min(9.4vw,15vh),168px)}
.step-sent .lede{max-width:none}

/* ---------- smaller screens ---------- */
@media (max-width:980px){
  .tiles{grid-template-columns:repeat(3,minmax(0,1fr))}
  .step-in.has-prop{grid-template-columns:minmax(0,1fr) 230px;gap:36px}
}
@media (max-width:720px){
  .cx{padding-bottom:92px}
  .cx .top .tag{display:none}
  .cx-email > span{display:none}
  .cx-title{font-size:23vw}
  .q{font-size:clamp(34px,10vw,52px);max-width:none}
  .ans{font-size:clamp(28px,8.4vw,42px)}
  .tiles{grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}
  .tile-in{flex-direction:row;align-items:center;justify-content:flex-start;gap:10px;min-height:0;padding:9px 30px 9px 9px;border-radius:14px;box-shadow:3px 3px 0 #000}
  .tile-in svg{flex:0 0 auto;width:30px;height:30px;max-width:30px}
  .tile-in::after{width:16px;height:16px;top:50%;right:8px;margin-top:-8px;border-width:2px}
  .tile input:checked + .tile-in::after{background-size:12px}
  .tile-in b{min-width:0;font-size:13px;line-height:1.05;letter-spacing:.01em}
  .tiles{margin-top:16px}
  .sum dd{font-size:21px}
  .sum > div{padding:9px 0}
  .tile:last-child{grid-column:1/-1}
  .btn{height:52px;font-size:17px;padding:0 18px 0 22px}
  .key{display:none}
  .sum > div{grid-template-columns:minmax(0,1fr) auto}
  .sum dt{grid-column:1/-1}
  .cx-peek{width:118px;right:16px}
  .cx-ruler{right:calc(var(--fp) + 16px + 118px + 16px)}
  .step-in.has-prop{display:block}
  .prop{display:none}
  .step-sent .cx-title{font-size:19vw}
}
@media (max-width:380px){
  .tile-in{gap:7px;padding-left:8px}
  .tile-in svg{width:24px;height:24px;max-width:24px}
}
@media (max-height:760px) and (min-width:721px){
  .tile-in{min-height:104px}
}
@media (prefers-reduced-motion:reduce){
  .cx,.cx-peek .skin,.cx-ruler .head,.cx-ruler .done-line{transition:none}
  .cx-peek,.cx-peek.bob,.cx-peek.joy,.err:not(:empty){animation:none}
  .js .step.is-on *,.js .step.is-leaving,.ringer.on .pm,.ringer.on .rings i,.pm-btns i.yes,.bubble.typing i{animation:none!important}
  .js .step.is-on .q .w{opacity:1;transform:none}
}