/* UrbanAI - foglio di stile */
:root{
  --paper:#FCFCF7; --grid:#D6E4F5; --margin:#F2A7A7;
  --ink:#16225C; --ink-soft:#4A5588;
  --pen:#2346D8; --marker:#FFD83D; --red:#E4412F; --green:#14A06C; --pink:#FF6FAE; --violet:#7A4DE0;
  --card:#FFFFFF; --shadow:#16225C;
  --display:"Bricolage Grotesque", "Arial Rounded MT Bold", "Trebuchet MS", sans-serif;
  --body:"Atkinson Hyperlegible", "Segoe UI", Verdana, sans-serif;
  --hand:"Caveat", "Comic Sans MS", cursive;
}
@media (prefers-color-scheme: dark){
  :root:not([data-theme="light"]){
    --paper:#1D3A30; --grid:rgba(255,255,255,.07); --margin:rgba(255,160,160,.35);
    --ink:#F3F1E4; --ink-soft:#C3CBBE;
    --pen:#8FB3FF; --marker:#FFE066; --red:#FF7A68; --green:#5EE0A6; --pink:#FF9CC9; --violet:#B99BFF;
    --card:#244A3D; --shadow:#0E1F19;
  }
}
:root[data-theme="dark"]{
  --paper:#1D3A30; --grid:rgba(255,255,255,.07); --margin:rgba(255,160,160,.35);
  --ink:#F3F1E4; --ink-soft:#C3CBBE;
  --pen:#8FB3FF; --marker:#FFE066; --red:#FF7A68; --green:#5EE0A6; --pink:#FF9CC9; --violet:#B99BFF;
  --card:#244A3D; --shadow:#0E1F19;
}
:root{box-sizing:border-box;padding-top:env(safe-area-inset-top,0px);padding-bottom:env(safe-area-inset-bottom,0px)}
html{scroll-padding-top:calc(env(safe-area-inset-top,0px) + 80px);scroll-behavior:smooth}
*,*::before,*::after{box-sizing:inherit;margin:0}
body{
  background-color:var(--paper);
  background-image:
    linear-gradient(var(--grid) 1px,transparent 1px),
    linear-gradient(90deg,var(--grid) 1px,transparent 1px);
  background-size:26px 26px;
  color:var(--ink);font-family:var(--body);font-size:1.1rem;line-height:1.6;
  overflow-x:hidden;
}
body::before{ /* margine rosso del quaderno */
  content:"";position:fixed;top:0;bottom:0;left:clamp(14px,4vw,56px);width:2px;background:var(--margin);pointer-events:none;z-index:0;
}
img,svg,canvas{max-width:100%}
a{color:var(--pen)}
:focus-visible{outline:3px solid var(--pen);outline-offset:3px;border-radius:6px}
.wrap{width:min(1180px,100% - 2*clamp(28px,7vw,96px));margin-inline:auto;position:relative;z-index:1}

/* NAV */
header.nav{position:sticky;top:env(safe-area-inset-top,0px);z-index:20;padding:14px 0;
  background:color-mix(in srgb,var(--paper) 88%,transparent);backdrop-filter:blur(8px);border-bottom:2px dashed var(--grid)}
.nav .wrap{display:flex;align-items:center;justify-content:space-between;gap:16px}
.logo{display:flex;align-items:center;gap:10px;font-family:var(--display);font-weight:800;font-size:1.5rem;color:var(--ink);text-decoration:none;letter-spacing:-.02em}
.logo-mark{width:42px;height:42px;border-radius:12px;background:var(--pen);display:grid;place-items:center;transform:rotate(-6deg);box-shadow:3px 3px 0 var(--shadow)}
.logo-mark svg{width:26px;height:26px}
.nav ul{display:flex;gap:6px;list-style:none;padding:0;flex-wrap:wrap}
.nav ul a{display:block;padding:8px 14px;border-radius:999px;color:var(--ink);text-decoration:none;font-weight:700;font-size:.98rem}
.nav ul a:hover{background:var(--marker);color:#16225C}
.theme-btn{border:2px solid var(--ink);background:var(--card);color:var(--ink);border-radius:999px;width:44px;height:44px;cursor:pointer;font-size:1.2rem;flex-shrink:0}
@media (max-width:760px){.nav ul{display:none}}

/* HERO */
.hero{padding:clamp(40px,7vw,90px) 0 clamp(60px,8vw,110px)}
.hero .wrap{display:grid;grid-template-columns:1.05fr .95fr;gap:clamp(30px,5vw,70px);align-items:center}
@media (max-width:900px){.hero .wrap{grid-template-columns:1fr}}
.school-tag{display:inline-flex;align-items:center;gap:10px;background:var(--card);border:2px solid var(--ink);border-radius:999px;padding:6px 16px 6px 8px;font-weight:700;font-size:.95rem;box-shadow:3px 3px 0 var(--shadow);transform:rotate(-1.5deg)}
.school-tag b{background:var(--red);color:#fff;border-radius:999px;padding:2px 10px;font-size:.85rem}
h1{font-family:var(--display);font-weight:800;font-size:clamp(2.7rem,6.4vw,5.4rem);line-height:.98;letter-spacing:-.035em;margin:26px 0 22px}
h1 .wave{display:block;width:100%;height:28px;margin-top:10px}
.lead{font-size:clamp(1.12rem,1.6vw,1.3rem);color:var(--ink-soft);max-width:34em}
.cta-row{display:flex;gap:14px;flex-wrap:wrap;margin-top:30px}
.btn{display:inline-flex;align-items:center;gap:10px;font-family:var(--display);font-weight:700;font-size:1.08rem;padding:14px 24px;border-radius:16px;border:2.5px solid var(--ink);text-decoration:none;cursor:pointer;transition:transform .15s,box-shadow .15s}
.btn-main{background:var(--marker);color:#16225C;box-shadow:5px 5px 0 var(--shadow)}
.btn-alt{background:var(--card);color:var(--ink);box-shadow:5px 5px 0 var(--shadow)}
.btn:hover{transform:translate(-2px,-2px);box-shadow:7px 7px 0 var(--shadow)}
.btn:active{transform:translate(3px,3px);box-shadow:2px 2px 0 var(--shadow)}
.hand{font-family:var(--hand);font-size:1.6rem;color:var(--red);line-height:1.1}
.hero-note{margin-top:28px;display:flex;align-items:center;gap:10px;transform:rotate(-2deg)}

/* DEMO */
.demo{position:relative;display:flex;flex-direction:column;align-items:center;gap:22px}
.phone{width:min(330px,100%);aspect-ratio:9/18.5;background:#101A45;border-radius:46px;padding:12px;box-shadow:10px 12px 0 var(--shadow);position:relative;transform:rotate(2deg);transition:transform .3s}
.phone.buzz{animation:buzz .5s linear}
@keyframes buzz{0%,100%{transform:rotate(2deg) translateX(0)}10%,50%,90%{transform:rotate(2deg) translateX(-6px)}30%,70%{transform:rotate(2deg) translateX(6px)}}
.screen{height:100%;border-radius:36px;overflow:hidden;position:relative;background:#F5F7FF;color:#16225C;display:flex;flex-direction:column}
.screen::before{content:"";position:absolute;inset:0;background:var(--flash,transparent);opacity:0;transition:opacity .2s;z-index:3;pointer-events:none}
.screen.flash::before{animation:flash 1.1s ease-out}
@keyframes flash{0%{opacity:.9}100%{opacity:0}}
.status{display:flex;justify-content:space-between;padding:12px 22px 4px;font-size:.78rem;font-weight:700}
.notch{position:absolute;top:10px;left:50%;transform:translateX(-50%);width:90px;height:24px;background:#101A45;border-radius:999px;z-index:4}
.map{position:relative;flex:1;background:#E7ECFA;overflow:hidden}
.map svg{position:absolute;inset:0;width:100%;height:100%}
.me{position:absolute;left:50%;top:58%;width:22px;height:22px;margin:-11px 0 0 -11px;background:#2346D8;border:4px solid #fff;border-radius:50%;box-shadow:0 0 0 8px rgba(35,70,216,.2)}
.listening{position:absolute;top:12px;left:12px;right:12px;display:flex;align-items:center;gap:10px;background:#fff;border-radius:14px;padding:8px 12px;font-size:.8rem;font-weight:700;box-shadow:0 3px 0 rgba(22,34,92,.15)}
.listening canvas{flex:1;height:30px;width:100%}
.dot-live{width:10px;height:10px;border-radius:50%;background:#14A06C;flex-shrink:0;animation:pulse 1.4s infinite}
@keyframes pulse{50%{opacity:.3}}
.alert{position:absolute;left:12px;right:12px;bottom:12px;background:#fff;border-radius:20px;padding:14px;border-left:8px solid var(--c,#2346D8);box-shadow:0 6px 0 rgba(22,34,92,.18);transform:translateY(130%);transition:transform .45s cubic-bezier(.2,1.4,.4,1);z-index:2}
.alert.show{transform:translateY(0)}
.alert-top{display:flex;align-items:center;gap:10px}
.alert-ico{font-size:1.9rem;line-height:1}
.alert h3{font-family:var(--display);font-size:1.08rem;line-height:1.15}
.alert small{display:block;color:#4A5588;font-size:.72rem;font-weight:700}
.alert p{font-size:.86rem;margin-top:8px;line-height:1.35}
.alert .sub{background:#16225C;color:#fff;border-radius:10px;padding:8px 10px;margin-top:8px;font-size:.84rem;min-height:2.6em}
.nav-bar{display:flex;justify-content:space-around;padding:10px 0 14px;background:#fff;font-size:1.2rem}

.pad{display:flex;flex-wrap:wrap;justify-content:center;gap:10px;max-width:440px}
.pad-title{font-family:var(--hand);font-size:1.55rem;color:var(--ink);transform:rotate(-2deg)}
.sound{border:2.5px solid var(--ink);background:var(--card);color:var(--ink);font-family:var(--body);font-weight:700;font-size:.95rem;padding:9px 14px;border-radius:14px;cursor:pointer;box-shadow:3px 3px 0 var(--shadow);transition:transform .12s,box-shadow .12s,background .2s}
.sound:nth-child(odd){transform:rotate(-1.5deg)}
.sound:nth-child(even){transform:rotate(1.2deg)}
.sound:hover{background:var(--marker);color:#16225C}
.sound[aria-pressed="true"]{background:var(--c);color:#fff;border-color:var(--c)}
.sound:active{transform:translate(2px,2px);box-shadow:1px 1px 0 var(--shadow)}

/* SEZIONI */
section{padding:clamp(60px,9vw,120px) 0;position:relative}
.sec-head{max-width:40em;margin-bottom:clamp(34px,5vw,56px)}
h2{font-family:var(--display);font-weight:800;font-size:clamp(2.1rem,4.4vw,3.4rem);line-height:1.02;letter-spacing:-.03em;margin-bottom:16px}
.sec-head p{color:var(--ink-soft);font-size:1.15rem}

/* funzioni: pagina di quaderno con post-it di misure diverse */
.board{display:grid;grid-template-columns:repeat(6,1fr);gap:22px}
.note{background:var(--card);border:2.5px solid var(--ink);border-radius:22px;padding:26px;box-shadow:6px 6px 0 var(--shadow);position:relative}
.note h3{font-family:var(--display);font-size:1.45rem;line-height:1.15;margin:12px 0 8px;letter-spacing:-.015em}
.note p{color:var(--ink-soft)}
.note .emo{font-size:2.3rem;line-height:1}
.note.big{grid-column:span 4;background:var(--pen);color:#fff;border-color:var(--pen)}
.note.big p{color:rgba(255,255,255,.88)}
.note.tall{grid-column:span 2;grid-row:span 2;background:var(--marker);color:#16225C;transform:rotate(1.5deg)}
.note.tall p{color:#34406F}
.note.w2{grid-column:span 2}
.note.w3{grid-column:span 3}
.note.pinkish{background:var(--pink);color:#16225C;transform:rotate(-1.2deg)}
.note.pinkish p{color:#3A2350}
.note.tape::before{content:"";position:absolute;top:-14px;left:50%;width:90px;height:26px;background:rgba(255,216,61,.75);transform:translateX(-50%) rotate(-3deg);border-radius:3px}
.subs-demo{margin-top:18px;background:rgba(0,0,0,.25);border-radius:14px;padding:14px 16px;font-size:1.05rem;min-height:4.4em;font-weight:700}
.subs-demo .who{display:block;font-size:.8rem;opacity:.8;font-weight:400}
.caret{display:inline-block;width:2px;height:1.1em;background:currentColor;vertical-align:-3px;animation:pulse 1s infinite}
.vib-list{list-style:none;padding:0;margin-top:16px;display:grid;gap:12px}
.vib-list li{display:flex;align-items:center;gap:12px;font-weight:700;font-size:.98rem}
.vib{display:flex;gap:4px;align-items:center;min-width:86px}
.vib i{display:block;height:12px;background:#16225C;border-radius:4px}
@media (max-width:900px){.board{grid-template-columns:repeat(2,1fr)}.note.big,.note.w3{grid-column:span 2}.note.tall{grid-row:auto;grid-column:span 2}.note.w2{grid-column:span 1}}
@media (max-width:560px){.note.w2{grid-column:span 2}}

/* come funziona: sequenza vera, numerata */
.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:clamp(20px,3vw,40px);counter-reset:s;list-style:none;padding:0}
.steps li{position:relative;padding-top:78px}
.steps li::before{counter-increment:s;content:counter(s);position:absolute;top:0;left:0;width:62px;height:62px;border-radius:50%;display:grid;place-items:center;font-family:var(--display);font-weight:800;font-size:1.9rem;color:#fff;background:var(--sc);border:3px solid var(--ink);box-shadow:4px 4px 0 var(--shadow)}
.steps li:nth-child(1){--sc:var(--pen)} .steps li:nth-child(2){--sc:var(--violet)} .steps li:nth-child(3){--sc:var(--red)}
.steps li:not(:last-child)::after{content:"";position:absolute;top:30px;left:78px;right:-12px;border-top:3px dashed var(--ink-soft)}
.steps h3{font-family:var(--display);font-size:1.5rem;margin-bottom:8px;letter-spacing:-.015em}
.steps p{color:var(--ink-soft)}
@media (max-width:760px){.steps{grid-template-columns:1fr}.steps li:not(:last-child)::after{display:none}}

/* scuola */
.school{background:var(--ink);color:var(--paper);border-radius:40px;padding:clamp(34px,6vw,76px);display:grid;grid-template-columns:1.2fr .8fr;gap:clamp(30px,5vw,60px);align-items:center;position:relative;overflow:hidden}
.school h2{color:var(--paper)}
.school p{color:color-mix(in srgb,var(--paper) 82%,transparent);margin-bottom:14px;max-width:36em}
.school .hand{color:var(--marker);font-size:1.9rem;margin-top:10px}
.facts{display:grid;gap:14px}
.fact{background:color-mix(in srgb,var(--paper) 10%,transparent);border:2px solid color-mix(in srgb,var(--paper) 30%,transparent);border-radius:18px;padding:16px 20px}
.fact strong{display:block;font-family:var(--display);font-size:1.25rem;color:var(--marker)}
.fact span{font-size:.98rem;color:color-mix(in srgb,var(--paper) 85%,transparent)}
@media (max-width:900px){.school{grid-template-columns:1fr}}

/* CTA finale */
.final{text-align:center}
.final h2{max-width:14em;margin-inline:auto}
.final p{max-width:34em;margin:0 auto;color:var(--ink-soft);font-size:1.15rem}
.final .cta-row{justify-content:center}
.stamp{display:inline-block;margin-top:40px;border:3px solid var(--red);color:var(--red);font-family:var(--display);font-weight:800;padding:8px 18px;border-radius:12px;transform:rotate(-4deg);font-size:1.05rem}

footer{padding:40px 0 50px;border-top:2px dashed var(--grid);font-size:.95rem;color:var(--ink-soft)}
footer .wrap{display:flex;justify-content:space-between;gap:20px;flex-wrap:wrap;align-items:center}

@media (prefers-reduced-motion: reduce){
  *,*::before,*::after{animation:none!important;transition:none!important;scroll-behavior:auto!important}
}