/* The form player: one question at a time, filling the box it is mounted in (the whole page, or the builder preview).
   Colours come from the form's theme as --bg, --fg and --accent on .sfp. Every class starts with sfp- so the builder's styles never clash. */
.sfp{--bg:#fff;--fg:#141413;--accent:#141413;--on-accent:#fff;--font:Geist;
  position:relative;width:100%;height:100%;overflow:hidden;background:var(--bg);color:var(--fg);
  font-family:var(--font),system-ui,-apple-system,"Segoe UI",sans-serif;-webkit-font-smoothing:antialiased;outline:none;
  --soft:color-mix(in srgb,var(--accent) 10%,transparent);--soft-2:color-mix(in srgb,var(--accent) 22%,transparent);
  --line:color-mix(in srgb,var(--accent) 45%,transparent);--muted:color-mix(in srgb,var(--fg) 62%,transparent)}
.sfp *{box-sizing:border-box}
.sfp [hidden]{display:none!important}
.sfp :focus-visible{outline:2px solid var(--accent);outline-offset:2px}
.sfp .sfp-input:focus-visible{outline:none}
.sfp-bgimg{position:absolute;inset:0;background:center/cover no-repeat;opacity:.9}
.sfp-bgimg::after{content:"";position:absolute;inset:0;background:color-mix(in srgb,var(--bg) 55%,transparent)}
.sfp-progress{position:absolute;left:0;right:0;top:0;height:4px;background:var(--soft);z-index:3}
.sfp-progress i{display:block;height:100%;width:0;background:var(--accent);transition:width .5s cubic-bezier(.2,.7,.2,1)}
.sfp-stage{position:absolute;inset:0;overflow-y:auto;z-index:2;display:flex;scrollbar-width:none}
.sfp-stage::-webkit-scrollbar{display:none}
.sfp-step{margin:auto;width:100%;max-width:760px;padding:72px 28px 120px;display:flex;gap:14px}
.sfp-step.in-next{animation:sfpInUp .5s cubic-bezier(.2,.7,.2,1) both}
.sfp-step.in-prev{animation:sfpInDown .5s cubic-bezier(.2,.7,.2,1) both}
@keyframes sfpInUp{from{opacity:0;transform:translateY(48px)}}
@keyframes sfpInDown{from{opacity:0;transform:translateY(-48px)}}
.sfp-num{flex:none;display:flex;align-items:center;gap:4px;height:1.6em;font-size:clamp(15px,1.8vw,18px);color:var(--accent);padding-top:.35em;font-variant-numeric:tabular-nums}
.sfp-num svg{width:14px;height:14px}
.sfp-body{flex:1;min-width:0}
.sfp-title{font-size:clamp(22px,3vw,30px);line-height:1.3;font-weight:400;letter-spacing:-.01em;margin:0;white-space:pre-wrap;overflow-wrap:anywhere}
.sfp-title .req{color:var(--accent);margin-left:2px}
.sfp-desc{font-size:clamp(16px,1.9vw,20px);line-height:1.45;color:var(--muted);margin:10px 0 0;white-space:pre-wrap;overflow-wrap:anywhere}
.sfp-field{margin-top:30px}

/* text answers: a large line, as on paper */
.sfp-input{width:100%;border:0;border-bottom:1px solid var(--line);background:transparent;color:var(--accent);font:inherit;
  font-size:clamp(22px,3vw,30px);padding:4px 0 10px;outline:none;border-radius:0;transition:border-color .15s;-webkit-appearance:none;appearance:none}
.sfp-input::placeholder{color:color-mix(in srgb,var(--accent) 35%,transparent)}
.sfp-input:focus{border-bottom:2px solid var(--accent);padding-bottom:9px}
textarea.sfp-input{resize:none;min-height:46px;line-height:1.35;overflow:hidden}
.sfp-input[type=date]{max-width:320px;color-scheme:light dark}
.sfp-hint{font-size:13px;color:var(--muted);margin-top:10px}
.sfp-hint b{font-weight:600}

/* choices: tinted boxes with a key letter */
.sfp-choices{display:flex;flex-direction:column;gap:10px;align-items:flex-start;max-width:100%}
.sfp-choice{display:flex;align-items:center;gap:12px;min-width:min(280px,100%);max-width:100%;padding:9px 14px 9px 9px;border-radius:6px;
  background:var(--soft);border:1px solid var(--line);color:var(--accent);font:inherit;font-size:clamp(17px,2vw,20px);text-align:left;cursor:pointer;
  transition:background-color .12s,box-shadow .12s}
.sfp-choice:hover{background:var(--soft-2)}
.sfp-choice .k{flex:none;min-width:26px;height:26px;padding:0 5px;border:1px solid var(--line);border-radius:4px;display:grid;place-items:center;
  font-size:12px;font-weight:600;background:var(--bg);color:var(--accent)}
.sfp-choice .t{flex:1;min-width:0;overflow-wrap:anywhere}
.sfp-choice .tick{width:18px;height:18px;flex:none;opacity:0}
.sfp-choice[aria-checked=true]{box-shadow:inset 0 0 0 1px var(--accent);background:var(--soft-2)}
.sfp-choice[aria-checked=true] .k{background:var(--accent);color:var(--on-accent);border-color:var(--accent)}
.sfp-choice[aria-checked=true] .tick{opacity:1}
.sfp-choice.blink{animation:sfpBlink .35s 2}
@keyframes sfpBlink{50%{background:var(--soft)}}
.sfp-other{margin-top:4px;width:min(420px,100%);font-size:20px}
.sfp-yesno{flex-direction:row;flex-wrap:wrap}
.sfp-yesno .sfp-choice{min-width:150px}

/* dropdown: a search box over the list */
.sfp-dd{position:relative;max-width:520px}
.sfp-dd-list{margin-top:10px;max-height:260px;overflow-y:auto;display:flex;flex-direction:column;gap:6px;padding:2px}
.sfp-dd-list .sfp-choice{width:100%}
.sfp-dd-empty{color:var(--muted);font-size:16px;padding:6px 2px}

/* rating and scale */
.sfp-stars{display:flex;gap:6px;flex-wrap:wrap}
.sfp-star{background:none;border:0;padding:4px;cursor:pointer;color:var(--accent);display:flex;flex-direction:column;align-items:center;gap:6px;font:inherit;font-size:14px}
.sfp-star svg{width:clamp(34px,6vw,52px);height:clamp(34px,6vw,52px);fill:transparent;stroke:var(--accent);stroke-width:1.4;transition:fill .1s,transform .1s}
.sfp-star.on svg{fill:var(--accent)}
.sfp-star:hover svg{transform:scale(1.06)}
.sfp-scale{display:grid;grid-auto-flow:column;grid-auto-columns:1fr;gap:6px;max-width:680px}
.sfp-scale .sfp-choice{min-width:0;justify-content:center;padding:12px 0;font-size:18px}
.sfp-scale-labels{display:flex;justify-content:space-between;max-width:680px;margin-top:10px;font-size:14px;color:var(--muted)}

/* file upload */
.sfp-drop{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:8px;min-height:180px;padding:24px;border:1px dashed var(--line);
  border-radius:8px;background:var(--soft);color:var(--accent);text-align:center;cursor:pointer;position:relative;font-size:17px}
.sfp-drop input{position:absolute;inset:0;opacity:0;cursor:pointer}
.sfp-drop small{color:var(--muted);font-size:13px}
.sfp-drop.over{background:var(--soft-2)}
.sfp-file{display:flex;align-items:center;gap:12px;padding:14px 16px;border:1px solid var(--line);border-radius:8px;background:var(--soft);color:var(--accent);font-size:17px;max-width:520px}
.sfp-file svg{width:18px;height:18px;flex:none}
.sfp-file span{flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.sfp-file button{background:none;border:0;color:var(--muted);cursor:pointer;font:inherit;font-size:14px;text-decoration:underline}

/* buttons and messages */
.sfp-actions{display:flex;align-items:center;gap:14px;margin-top:28px;flex-wrap:wrap}
.sfp-btn{display:inline-flex;align-items:center;gap:8px;height:44px;padding:0 20px;border:0;border-radius:6px;background:var(--accent);color:var(--on-accent);
  font:inherit;font-size:19px;font-weight:600;cursor:pointer;transition:filter .12s,transform .08s}
.sfp-btn:hover{filter:brightness(1.08)}
.sfp-btn:active{transform:scale(.98)}
.sfp-btn svg{width:16px;height:16px}
.sfp-btn[disabled]{opacity:.6;cursor:progress}
.sfp-enter{font-size:12.5px;color:var(--muted)}
.sfp-enter b{font-weight:600}
.sfp-error{display:inline-flex;align-items:center;gap:6px;margin-top:16px;padding:6px 10px;border-radius:4px;background:#fdecea;color:#b3261e;font-size:15px;animation:sfpShake .3s}
@keyframes sfpShake{25%{transform:translateX(-4px)}75%{transform:translateX(4px)}}

/* welcome and thank-you screens */
.sfp-cover{margin:auto;max-width:720px;padding:72px 28px 120px;text-align:center}
.sfp-cover .sfp-title{font-size:clamp(28px,4.6vw,44px);line-height:1.2}
.sfp-cover .sfp-desc{margin-top:14px}
.sfp-cover .sfp-actions{justify-content:center;margin-top:34px}
.sfp-cover.in-next{animation:sfpInUp .5s cubic-bezier(.2,.7,.2,1) both}
.sfp-made{display:inline-flex;margin-top:40px;padding:10px 16px;border-radius:999px;border:1px solid var(--line);color:var(--accent);text-decoration:none;font-size:15px}
.sfp-made:hover{background:var(--soft)}

/* bottom bar: the brand, the safety line and the arrows */
.sfp-foot{position:absolute;left:0;right:0;bottom:0;z-index:4;display:flex;align-items:flex-end;justify-content:space-between;gap:12px;padding:14px 18px;pointer-events:none}
.sfp-foot>*{pointer-events:auto}
.sfp-brand{display:flex;flex-direction:column;gap:4px;font-size:11.5px;color:var(--muted)}
.sfp-safe a{color:inherit}
.sfp-badge{display:inline-flex;align-items:center;gap:6px;padding:6px 10px;border-radius:6px;background:var(--accent);color:var(--on-accent);font-size:12.5px;font-weight:600;text-decoration:none;width:max-content}
.sfp-nav{display:flex;gap:1px;border-radius:6px;overflow:hidden}
.sfp-nav button{width:38px;height:34px;border:0;background:var(--accent);color:var(--on-accent);cursor:pointer;display:grid;place-items:center}
.sfp-nav button:disabled{opacity:.45;cursor:default}
.sfp-nav svg{width:16px;height:16px}
.sfp-closed{margin:auto;text-align:center;max-width:560px;padding:40px 28px}

@media (max-width:600px){
  .sfp-step{padding:56px 20px 130px;flex-direction:column;gap:6px}
  .sfp-num{padding-top:0}
  .sfp-choice{min-width:0;width:100%}
  .sfp-yesno .sfp-choice{min-width:0;flex:1}
  .sfp-scale{grid-auto-flow:row;grid-template-columns:repeat(6,1fr)}
  .sfp-enter{display:none}
  .sfp-brand .sfp-safe{max-width:180px}
}
@media (prefers-reduced-motion:reduce){.sfp *{animation:none!important;transition:none!important}}