/* ==========================================================================
   Calcolatore ROI — Operazioni Immobiliari
   Token allineati alla sezione "Investimenti" del sito (tema verde).
   ========================================================================== */

:root{
  --ground:#ffffff;
  --surface:#ffffff;
  --surface-tint:#eef1f6;
  --ink:#232019;
  --ink-soft:#6b6459;
  --line:#e1ddd0;
  --green:#1d6b48;
  --green-deep:#123a2a;
  --amber:#c97a00;
  --shadow:0 20px 50px rgba(20,25,50,0.10);
  --font-display:'Poppins','Arial',sans-serif;
  --font-body:'IBM Plex Sans',system-ui,sans-serif;
  --font-mono:'IBM Plex Mono',ui-monospace,monospace;
  --radius:14px;
  --radius-sm:10px;
  --danger:#b3261e;
}

@media (prefers-color-scheme: dark){
  :root{
    --ground:#14171a;
    --surface:#1b1f23;
    --surface-tint:#22272c;
    --ink:#eceae4;
    --ink-soft:#a5a096;
    --line:#31373d;
    --green:#4fae7f;
    --green-deep:#a8d8bf;
    --amber:#e2a13c;
    --shadow:0 20px 50px rgba(0,0,0,0.45);
    --danger:#f2837a;
  }
}

*,*::before,*::after{box-sizing:border-box}

html{-webkit-text-size-adjust:100%}

body{
  margin:0;
  background:var(--ground);
  color:var(--ink);
  font-family:var(--font-body);
  font-size:16px;
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
}

.wrap{width:min(940px,100% - 2.5rem);margin-inline:auto}

a{color:var(--green);text-underline-offset:3px}
a:hover{color:var(--green-deep)}

.skip-link{
  position:absolute;left:-9999px;top:0;background:var(--surface);
  padding:.6rem 1rem;border-radius:0 0 var(--radius-sm) 0;z-index:10;
}
.skip-link:focus{left:0}

/* ---------- Header ---------- */
.site-header{padding:1.4rem 0 .4rem}
.header-inner{display:flex;align-items:center;justify-content:flex-start;gap:1rem;flex-wrap:wrap}

.back-link{
  font-family:var(--font-body);font-size:.94rem;font-weight:500;
  text-decoration:none;color:var(--ink-soft);
}
.back-link:hover{color:var(--green)}

.badge{
  display:inline-flex;align-items:center;gap:.5rem;
  padding:.36rem .8rem;border:1px solid var(--line);border-radius:999px;
  background:var(--surface);
  font-size:.8rem;font-weight:500;letter-spacing:.01em;color:var(--ink-soft);
}
.badge .dot{width:8px;height:8px;border-radius:50%;background:var(--green);flex:none}
.badge-free .dot{background:var(--amber)}

/* ---------- Intro ---------- */
.intro{padding:1.6rem 0 1.8rem;max-width:64ch}
h1{
  font-family:var(--font-display);font-weight:700;
  font-size:clamp(1.9rem,4.6vw,2.7rem);line-height:1.15;
  margin:0 0 .7rem;letter-spacing:-.02em;
}
.h1-sub{
  display:block;font-size:.46em;font-weight:600;letter-spacing:.06em;
  text-transform:uppercase;color:var(--green);margin-top:.55rem;
}
.lead{margin:0 0 .8rem;font-size:1.06rem;color:var(--ink)}
.meta{margin:0;font-size:.9rem;color:var(--ink-soft)}

/* ---------- Card ---------- */
.card{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius);
  box-shadow:var(--shadow);
  padding:clamp(1.2rem,3.4vw,2.2rem);
}

/* ---------- Stepper ---------- */
.stepper{margin-bottom:1.9rem}
.stepper-list{
  list-style:none;display:flex;gap:.4rem;margin:0 0 .9rem;padding:0;flex-wrap:wrap;
}
.step{
  display:flex;align-items:center;gap:.5rem;flex:1 1 auto;min-width:0;
  font-size:.86rem;color:var(--ink-soft);
}
.step-num{
  flex:none;width:26px;height:26px;border-radius:50%;
  display:grid;place-items:center;
  border:1px solid var(--line);background:var(--surface-tint);
  font-family:var(--font-mono);font-size:.78rem;
  transition:background .18s ease,color .18s ease,border-color .18s ease;
}
.step-label{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.step.is-current{color:var(--ink);font-weight:600}
.step.is-current .step-num{background:var(--green);border-color:var(--green);color:#fff}
.step.is-done{color:var(--ink)}
.step.is-done .step-num{
  background:transparent;border-color:var(--green);color:transparent;position:relative;
}
.step.is-done .step-num::after{
  content:'✓';position:absolute;inset:0;display:grid;place-items:center;
  color:var(--green);font-size:.8rem;font-family:var(--font-body);
}

.progress{height:5px;border-radius:999px;background:var(--surface-tint);overflow:hidden}
.progress-bar{height:100%;width:25%;border-radius:999px;background:var(--green);transition:width .28s ease}

/* ---------- Panels ---------- */
.panel{display:none;border:0;padding:0;margin:0;min-inline-size:0}
.panel.is-active{display:block;animation:fade .22s ease}
@keyframes fade{from{opacity:0;transform:translateY(5px)}to{opacity:1;transform:none}}

.panel-title{
  font-family:var(--font-display);font-weight:600;font-size:1.22rem;
  padding:0;margin:0 0 .35rem;letter-spacing:-.01em;
}
.panel-intro{margin:0 0 1.2rem;color:var(--ink-soft);font-size:.94rem}
.panel-title + .grid{margin-top:1.3rem}

/* ---------- Form grid ---------- */
.grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:1.05rem 1.2rem}
.span-2{grid-column:1 / -1}
@media (max-width:640px){
  .grid{grid-template-columns:1fr}
  .span-2{grid-column:auto}
}

.field{display:flex;flex-direction:column;min-width:0}
label,.label-like{
  font-size:.87rem;font-weight:600;margin-bottom:.4rem;color:var(--ink);
  display:block;
}
.req{color:var(--amber)}
.hint{margin:.4rem 0 0;font-size:.8rem;color:var(--ink-soft);line-height:1.45}

input[type=text],input[type=email],input[type=number],select{
  width:100%;font:inherit;color:var(--ink);
  background:var(--surface);
  border:1px solid var(--line);border-radius:var(--radius-sm);
  padding:.68rem .8rem;
  transition:border-color .15s ease,box-shadow .15s ease;
}
input::placeholder{color:var(--ink-soft);opacity:.65}
input:focus-visible,select:focus-visible,button:focus-visible,a:focus-visible,.check:focus-within{
  outline:2px solid var(--green);outline-offset:2px;
}
input:focus,select:focus{border-color:var(--green);box-shadow:0 0 0 3px rgba(29,107,72,.12)}
input[type=number]{font-family:var(--font-mono);letter-spacing:-.01em}
select{appearance:none;
  background-image:linear-gradient(45deg,transparent 50%,var(--ink-soft) 50%),linear-gradient(135deg,var(--ink-soft) 50%,transparent 50%);
  background-position:calc(100% - 18px) 52%,calc(100% - 13px) 52%;
  background-size:5px 5px,5px 5px;background-repeat:no-repeat;padding-right:2.2rem;
}

.input-wrap{position:relative;display:flex;align-items:center}
.input-wrap .unit{
  position:absolute;right:.8rem;font-family:var(--font-mono);font-size:.8rem;
  color:var(--ink-soft);pointer-events:none;
}
.input-wrap input{padding-right:3.4rem}
input[type=number]{-moz-appearance:textfield}
input[type=number]::-webkit-outer-spin-button,
input[type=number]::-webkit-inner-spin-button{-webkit-appearance:none;margin:0}

.field-sm{max-width:220px}

.error{margin:.4rem 0 0;font-size:.82rem;color:var(--danger);min-height:0;display:none}
.error.is-visible{display:block}
.error-submit{margin-top:1rem}
input.is-invalid,select.is-invalid{border-color:var(--danger)}

/* ---------- Checkbox / radio ---------- */
.checks{display:flex;gap:1.4rem;flex-wrap:wrap;margin-top:.15rem}
.check{
  display:flex;align-items:flex-start;gap:.55rem;font-weight:400;font-size:.94rem;
  margin:0;cursor:pointer;line-height:1.5;
}
.check input{
  width:18px;height:18px;margin:.16rem 0 0;flex:none;accent-color:var(--green);cursor:pointer;
}
.check-consent{
  background:var(--surface-tint);border:1px solid var(--line);
  border-radius:var(--radius-sm);padding:.85rem .95rem;font-size:.88rem;
}

.radio-cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(190px,1fr));gap:.7rem;margin-top:.2rem}
.radio-card{
  position:relative;display:block;cursor:pointer;margin:0;
  border:1px solid var(--line);border-radius:var(--radius-sm);
  background:var(--surface);padding:.85rem .95rem;
  transition:border-color .15s ease,background .15s ease;
}
.radio-card input{position:absolute;opacity:0;pointer-events:none}
.rc-title{display:block;font-weight:600;font-size:.96rem}
.rc-desc{display:block;font-size:.82rem;color:var(--ink-soft);margin-top:.2rem}
.radio-card:hover{border-color:var(--green)}
.radio-card:has(input:checked){
  border-color:var(--green);background:var(--surface-tint);
  box-shadow:inset 3px 0 0 var(--green);
}
.radio-card:has(input:focus-visible){outline:2px solid var(--green);outline-offset:2px}

/* ---------- Toggle ---------- */
.toggle-row{display:flex;align-items:center;justify-content:space-between;gap:1rem;flex-wrap:wrap}
.toggle-row .label-like{margin-bottom:0}
.switch{display:inline-flex;align-items:center;gap:.6rem;cursor:pointer;margin:0}
.switch input{position:absolute;opacity:0;width:0;height:0}
.slider{
  width:46px;height:26px;border-radius:999px;background:var(--surface-tint);
  border:1px solid var(--line);position:relative;transition:background .18s ease,border-color .18s ease;flex:none;
}
.slider::after{
  content:'';position:absolute;top:2px;left:2px;width:20px;height:20px;border-radius:50%;
  background:var(--surface);box-shadow:0 1px 3px rgba(0,0,0,.25);transition:transform .18s ease;
}
.switch input:checked + .slider{background:var(--green);border-color:var(--green)}
.switch input:checked + .slider::after{transform:translateX(20px)}
.switch input:focus-visible + .slider{outline:2px solid var(--green);outline-offset:2px}
.switch-text{font-size:.9rem;font-weight:600;color:var(--ink-soft);min-width:2ch}

/* ---------- Step 1 · pertinenze ---------- */
.pert-block{margin-top:1.9rem;padding-top:1.5rem;border-top:1px solid var(--line)}
.sub-title{
  font-family:var(--font-display);font-weight:600;font-size:1.02rem;margin:0 0 .3rem;
}
.hint-block{margin:0 0 1.1rem;max-width:70ch}

.pert-list{display:flex;flex-direction:column}
.pert-row{
  display:grid;grid-template-columns:158px minmax(0,1fr);gap:.35rem 1.1rem;
  padding:.9rem 0;border-bottom:1px solid var(--line);
}
.pert-row:first-child{border-top:1px solid var(--line)}
.pert-name{font-weight:600;font-size:.94rem;padding-top:1.35rem}
.pert-name small{display:block;font-weight:400;font-size:.76rem;color:var(--ink-soft);line-height:1.4}

.pert-controls{display:grid;grid-template-columns:repeat(auto-fit,minmax(132px,1fr));gap:.6rem .9rem;align-items:end}
.pert-f{display:flex;flex-direction:column;margin:0;min-width:0}
.pert-lab{
  font-size:.74rem;font-weight:600;letter-spacing:.02em;color:var(--ink-soft);
  margin-bottom:.3rem;text-transform:uppercase;
}
.pert-f input[type=number]{padding:.5rem .7rem}
.pert-f .input-wrap .unit{right:.6rem;font-size:.74rem}
.pert-f .input-wrap input{padding-right:2.6rem}
.pert-f-check{flex-direction:row;align-items:center;gap:.5rem;font-size:.86rem;font-weight:500;cursor:pointer}
.pert-f-check input{width:17px;height:17px;accent-color:var(--green);margin:0;flex:none}

.pert-row:not(.is-on) .pert-f-mq,
.pert-row:not(.is-on) .pert-f-comm,
.pert-row:not(.is-on) .pert-f-coef{opacity:.4}
.pert-row.coef-off .pert-f-coef{visibility:hidden}
.pert-out,.pert-disc{grid-column:2}
.pert-out{
  font-family:var(--font-mono);font-size:.8rem;color:var(--green);margin-top:.15rem;
}
.pert-row:not(.is-on) .pert-out{display:none}
.pert-disc{margin:.25rem 0 0;font-size:.75rem;color:var(--ink-soft);line-height:1.45;display:none}
.pert-row.is-on:not(.coef-off) .pert-disc{display:block}

.switch-sm .slider{width:40px;height:23px}
.switch-sm .slider::after{width:17px;height:17px}
.switch-sm input:checked + .slider::after{transform:translateX(17px)}
.switch-sm .switch-text{font-size:.84rem}

@media (max-width:700px){
  .pert-row{grid-template-columns:1fr}
  .pert-name{padding-top:0}
  .pert-out,.pert-disc{grid-column:1}
}

/* ---------- Step 3 · schede unità ---------- */
.resale-cards{display:flex;flex-direction:column;gap:1rem}
.resale-card{
  border:1px solid var(--line);border-radius:var(--radius-sm);
  padding:1.05rem 1.15rem;background:var(--surface);
}
.rc-head{margin-bottom:.9rem}
.resale-name{font-family:var(--font-display);font-weight:600;font-size:1rem}
.rc-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(178px,1fr));gap:.9rem 1rem;align-items:start}
.rc-grid-int{margin-bottom:.9rem}
.rc-grid-int .field{max-width:260px}
.rc-grid .field{margin:0}
.lab{font-size:.82rem;font-weight:600;margin-bottom:.35rem;display:block}
.calc-note{
  display:flex;flex-wrap:wrap;gap:.1rem .7rem;align-items:baseline;
  margin-top:.35rem;font-family:var(--font-mono);font-size:.76rem;color:var(--ink-soft);
}
.link-btn{
  background:none;border:0;padding:0;margin:0;cursor:pointer;
  font:inherit;font-size:.76rem;color:var(--green);text-decoration:underline;
  text-underline-offset:2px;font-family:var(--font-body);
}
.link-btn:hover{color:var(--green-deep)}

.rc-pert{
  border:1px solid var(--line);border-radius:var(--radius-sm);
  background:var(--surface-tint);padding:0 .9rem;margin-bottom:.9rem;
}
.rc-pert summary{
  cursor:pointer;padding:.7rem 0;font-size:.87rem;font-weight:600;list-style:revert;
}
.rc-pert[open] summary{border-bottom:1px solid var(--line);margin-bottom:.3rem}
.pert-list-sm{padding-bottom:.5rem}
.pert-list-sm .pert-row{grid-template-columns:130px minmax(0,1fr);padding:.75rem 0}
.pert-list-sm .pert-row:first-child{border-top:0}
.pert-list-sm .pert-row:last-child{border-bottom:0}
.pert-list-sm .pert-name{font-size:.88rem;padding-top:0}
@media (max-width:700px){
  .pert-list-sm .pert-row{grid-template-columns:1fr}
}

.total-box{
  margin-top:1.3rem;display:flex;align-items:center;justify-content:space-between;
  gap:1rem;flex-wrap:wrap;
  background:var(--surface-tint);border:1px solid var(--line);
  border-left:3px solid var(--green);
  border-radius:var(--radius-sm);padding:1rem 1.15rem;
}
.total-box-soft{margin-top:.2rem;padding:.85rem 1.05rem}
.total-box-soft .total-value{font-size:1.08rem}
.total-label{font-weight:600;font-size:.95rem}
.total-formula{
  display:block;font-family:var(--font-mono);font-weight:400;
  font-size:.76rem;color:var(--ink-soft);margin-top:.2rem;
}
.total-value{font-family:var(--font-mono);font-size:1.28rem;font-weight:500;color:var(--green)}

/* ---------- Disclaimer ---------- */
.disclaimer{
  margin-top:1.6rem;padding:1rem 1.15rem;
  background:var(--surface-tint);border:1px solid var(--line);
  border-left:3px solid var(--amber);border-radius:var(--radius-sm);
}
.disclaimer p{margin:0;font-size:.9rem;color:var(--ink-soft);line-height:1.6}
.disclaimer strong{color:var(--ink)}

/* honeypot */
.hp{position:absolute;left:-9999px;width:1px;height:1px;overflow:hidden}

/* ---------- Actions ---------- */
.actions{
  display:flex;gap:.7rem;justify-content:flex-end;flex-wrap:wrap;
  margin-top:2rem;padding-top:1.4rem;border-top:1px solid var(--line);
}
.btn{
  font:inherit;font-weight:600;font-size:.95rem;
  border-radius:999px;padding:.75rem 1.5rem;cursor:pointer;
  border:1px solid transparent;transition:background .15s ease,color .15s ease,border-color .15s ease,transform .08s ease;
  display:inline-flex;align-items:center;gap:.55rem;
}
.btn[hidden]{display:none}
.btn:active{transform:translateY(1px)}
.btn-primary{background:var(--green);color:#fff}
.btn-primary:hover{background:var(--green-deep)}
@media (prefers-color-scheme: dark){
  .btn-primary{color:#10231a}
  .btn-primary:hover{background:var(--green-deep)}
}
.btn-ghost{background:transparent;color:var(--ink-soft);border-color:var(--line)}
.btn-ghost:hover{color:var(--ink);border-color:var(--ink-soft)}
.btn-submit{margin-left:auto}
.btn[disabled]{opacity:.6;cursor:not-allowed}

.spinner{
  display:none;width:15px;height:15px;border-radius:50%;
  border:2px solid currentColor;border-top-color:transparent;animation:spin .7s linear infinite;
}
.btn.is-loading .spinner{display:inline-block}
@keyframes spin{to{transform:rotate(360deg)}}
@media (prefers-reduced-motion: reduce){
  *,*::before,*::after{animation-duration:.01ms !important;transition-duration:.01ms !important}
}

/* ---------- Risultato ---------- */
.result{padding:.4rem 0 .2rem;animation:fade .25s ease}
.result:focus{outline:none}
.result-kicker{
  margin:0 0 .5rem;font-size:.76rem;font-weight:700;letter-spacing:.09em;
  text-transform:uppercase;color:var(--green);
}
.result-roi{
  display:flex;align-items:center;justify-content:space-between;gap:1rem;flex-wrap:wrap;
  background:var(--surface-tint);border:1px solid var(--line);
  border-left:3px solid var(--green);border-radius:var(--radius-sm);
  padding:1.15rem 1.3rem;
}
.result-label{
  display:block;font-size:.78rem;font-weight:600;letter-spacing:.06em;
  text-transform:uppercase;color:var(--ink-soft);margin-bottom:.2rem;
}
.result-value{
  display:block;font-family:var(--font-mono);font-weight:600;
  font-size:clamp(2.2rem,6.5vw,3rem);line-height:1;color:var(--green);letter-spacing:-.02em;
}
.badge-esito{background:var(--surface);font-weight:600;color:var(--ink)}

.result-verdetto{
  margin:1.4rem 0 1.6rem;font-size:1.1rem;line-height:1.55;font-weight:600;
}
.result-sub{
  font-family:var(--font-body);font-size:.78rem;font-weight:700;letter-spacing:.06em;
  text-transform:uppercase;color:var(--ink-soft);margin:0 0 .6rem;
}
.result-consigli{margin:0 0 1.6rem;padding-left:1.2rem}
.result-consigli li{margin-bottom:.6rem;line-height:1.6}
.disclaimer-result{margin-top:0}
.result-cta{
  margin:1.4rem 0 0;padding-top:1.3rem;border-top:1px solid var(--line);
  font-size:.94rem;color:var(--ink-soft);
}

/* ---------- Footer ---------- */
.foot-note{
  margin:1.6rem auto 0;font-size:.82rem;color:var(--ink-soft);
  line-height:1.6;max-width:70ch;text-align:center;
}
.site-footer{margin-top:3rem;padding:1.8rem 0 2.4rem;border-top:1px solid var(--line)}
.site-footer p{margin:.2rem 0;font-size:.86rem;color:var(--ink-soft)}

.hidden{display:none !important}