:root{--bg:#0f1113;--panel:#171a1d;--panel2:#202428;--text:#f7f8f6;--muted:#aeb5b9;--line:#30363b;--olive:#75844d;--olive2:#9aab6e;--danger:#a65353;--ok:#6f9959;--max:1180px}
*{box-sizing:border-box}html{scroll-behavior:smooth}body{margin:0;background:var(--bg);color:var(--text);font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif}button,input,textarea,select{font:inherit}button{cursor:pointer}a{color:inherit;text-decoration:none}.container{max-width:var(--max);margin:auto;padding:0 22px}.hidden{display:none!important}.route{display:none}.route.active{display:block}.topbar{position:sticky;top:0;z-index:50;background:rgba(15,17,19,.94);backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}.nav{min-height:84px;display:flex;align-items:center;gap:18px}.brand-btn{background:none;border:0;padding:0}.logo{width:210px;max-height:66px;object-fit:contain;object-position:left center}.nav-actions{margin-left:auto;display:flex;gap:6px;flex-wrap:wrap}.nav-actions button,.footer button{border:0;background:transparent;color:var(--text);padding:10px 12px;border-radius:10px}.nav-actions button:hover{background:var(--panel)}.hero{padding:72px 22px 64px;display:grid;grid-template-columns:1.12fr .88fr;gap:34px;align-items:center}.eyebrow,.tag{font-size:12px;letter-spacing:.1em;text-transform:uppercase;color:var(--olive2);font-weight:900}.tag{margin-bottom:10px}h1{font-size:clamp(42px,6vw,72px);line-height:.98;letter-spacing:-.045em;margin:12px 0 18px}h2{font-size:clamp(29px,4vw,44px);line-height:1.06;margin:8px 0 14px}h3{font-size:23px;line-height:1.15;margin:8px 0 12px}p{color:#d2d7da;line-height:1.65}.lead{font-size:19px;max-width:780px}.muted{color:var(--muted);font-size:14px}.actions,.stack-actions{display:flex;gap:10px;flex-wrap:wrap;margin-top:24px}.stack-actions{align-items:flex-start}.primary,.secondary,.whatsapp-btn{border-radius:12px;padding:12px 17px;font-weight:900;border:0;color:#fff}.primary{background:var(--olive)}.primary:hover{filter:brightness(1.08)}.secondary{background:var(--panel2);border:1px solid var(--line)}.full{width:100%}.hero-visual{height:410px;border:1px solid var(--line);border-radius:28px;position:relative;overflow:hidden;background:radial-gradient(circle at 70% 18%,rgba(153,171,110,.24),transparent 30%),linear-gradient(145deg,#24292c,#0b0d0e)}.hero-grid{position:absolute;inset:0;background-image:linear-gradient(rgba(255,255,255,.035) 1px,transparent 1px),linear-gradient(90deg,rgba(255,255,255,.035) 1px,transparent 1px);background-size:54px 54px;transform:perspective(500px) rotateX(55deg) translateY(120px);transform-origin:bottom}.hero-chip{position:absolute;left:26px;right:26px;bottom:26px;padding:20px;border:1px solid var(--line);border-radius:18px;background:rgba(0,0,0,.35);backdrop-filter:blur(8px)}.hero-chip span{color:var(--olive2);font-weight:900}.hero-chip b{display:block;font-size:34px;margin:4px 0}.hero-chip small{color:var(--muted)}.section{padding:68px 0;border-top:1px solid rgba(255,255,255,.05)}.section-head{display:flex;justify-content:space-between;gap:24px;align-items:end;margin-bottom:24px}.section-head p{max-width:600px}.path-grid,.grid-2,.grid-3,.chapter-grid{display:grid;gap:18px}.path-grid,.grid-2{grid-template-columns:1fr 1fr}.grid-3{grid-template-columns:repeat(3,1fr)}.chapter-grid{grid-template-columns:repeat(3,1fr);padding-bottom:68px}.path-card,.panel,.stat,.contact-card,.chapter-card{background:var(--panel);border:1px solid var(--line);border-radius:20px;padding:22px}.path-card{min-height:310px;display:flex;flex-direction:column;align-items:flex-start}.path-card p{flex:1}.reviews{display:grid;gap:10px}.review{padding:15px 16px;border-left:3px solid var(--olive);background:var(--panel);border-radius:0 14px 14px 0}.stars{color:#d6cf68;letter-spacing:2px}.whatsapp-btn{display:inline-flex;background:#1c9b55;margin:8px 0}.page-hero{padding:58px 22px 32px}.page-hero.compact{padding-bottom:22px}.chapter-card{position:relative}.chapter-card .price,.price{font-size:32px;color:var(--olive2);font-weight:900}.old-price{text-decoration:line-through;color:var(--muted);font-size:16px}.badge{display:inline-flex;padding:7px 10px;border-radius:999px;background:#252b24;color:#c4d69e;font-size:12px;font-weight:900}.lesson-layout{display:grid;grid-template-columns:minmax(0,1fr) 330px;gap:20px;padding-bottom:70px}.lesson-aside{display:grid;gap:12px;align-content:start}.lesson-top{display:flex;justify-content:space-between;gap:12px;align-items:center}.scene-nav{display:flex;align-items:center;gap:9px}.icon-btn{width:42px;height:42px;border-radius:11px;border:1px solid var(--line);background:var(--panel2);color:#fff}.scene-stage{aspect-ratio:16/9;border-radius:22px;border:1px solid var(--line);overflow:hidden;background:#f5f5f1;color:#121315;position:relative}.slide{width:100%;height:100%;display:grid;grid-template-rows:auto 1fr auto;background:linear-gradient(115deg,#f7f7f4 0 69%,#e9ece6 69%)}.slide-head{display:flex;align-items:center;justify-content:space-between;padding:24px 28px 12px}.slide-brand{display:flex;align-items:center;gap:12px}.slide-brand img{width:120px;max-height:52px;object-fit:contain}.slide-brand b{font-size:12px;letter-spacing:.06em}.slide-number{font-size:32px;color:#75844d;font-weight:900}.slide-body{padding:10px 28px 18px;display:grid;grid-template-columns:1.25fr .75fr;gap:24px;align-items:center}.slide h3{font-size:clamp(25px,3vw,42px);margin:0 0 14px;line-height:1.02}.slide h3 span{color:#75844d}.slide p{color:#252729;line-height:1.5;margin:8px 0}.slide-panel{border:1px solid #9aa58d;background:#fff;padding:15px;border-radius:12px}.formula{font-size:clamp(20px,3vw,38px);font-weight:900;padding:18px;border:2px solid #7d8b5a;border-radius:12px;background:#fff}.formula span{color:#75844d}.example-table{width:100%;border-collapse:collapse;background:#fff;border-radius:10px;overflow:hidden}.example-table td{border:1px solid #bbc2b5;padding:10px}.example-table tr.highlight td{background:#74834a;color:#fff;font-weight:800}.slide-visual{height:100%;min-height:210px;border-radius:18px;background:radial-gradient(circle at 30% 20%,rgba(117,132,77,.6),transparent 35%),linear-gradient(145deg,#252a2d,#080a0b);position:relative;overflow:hidden}.slide-visual:after{content:"";position:absolute;inset:20px;border:1px solid rgba(255,255,255,.15);border-radius:14px;background:linear-gradient(135deg,transparent 40%,rgba(255,255,255,.06))}.visual-metric{position:absolute;left:18px;right:18px;bottom:18px;color:#fff;background:rgba(0,0,0,.45);padding:14px;border-radius:12px;z-index:1}.visual-metric b{color:#b8ca89;font-size:30px}.check-list{display:grid;gap:10px}.check{display:flex;gap:10px;align-items:flex-start}.check i{font-style:normal;background:#75844a;color:#fff;border-radius:50%;width:23px;height:23px;display:grid;place-items:center;flex:0 0 auto}.slide-foot{padding:11px 28px;background:#0e1011;color:#fff;display:flex;justify-content:space-between;font-size:11px}.slide-foot span:first-child{color:#b7c78c}.scene-dots{display:flex;gap:7px;justify-content:center;padding:14px}.scene-dots button{width:9px;height:9px;border:0;border-radius:50%;background:#4b5155;padding:0}.scene-dots button.active{background:var(--olive2);transform:scale(1.2)}.progress{height:8px;background:var(--panel2);border-radius:999px;overflow:hidden;margin-bottom:18px}.progress span{display:block;height:100%;background:var(--olive);width:20%;transition:.2s}.cma-shell{max-width:760px;padding-bottom:70px}.cma-step{min-height:300px}.choice-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px}.choice{border:1px solid var(--line);background:#111416;color:#fff;padding:14px;border-radius:12px;text-align:left}.choice.selected{border-color:var(--olive2);background:#222a1e}.wizard-actions{display:flex;justify-content:space-between;margin-top:14px}.account-shell{max-width:720px;padding:65px 22px}.field{margin:12px 0}.field label{display:block;color:var(--muted);font-size:13px;margin-bottom:6px}.field input,.field textarea,.field select{width:100%;background:#101315;border:1px solid var(--line);border-radius:10px;padding:11px;color:#fff}.field textarea{min-height:110px}.admin-head{padding:52px 22px 20px}.admin-layout{display:grid;grid-template-columns:245px minmax(0,1fr);gap:18px;padding-bottom:70px}.admin-nav{background:var(--panel);border:1px solid var(--line);border-radius:18px;padding:10px;height:max-content;position:sticky;top:104px}.admin-nav button{width:100%;text-align:left;background:transparent;color:#fff;border:0;padding:11px;border-radius:9px}.admin-nav button.active,.admin-nav button:hover{background:var(--panel2)}.admin-toolbar{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:14px}.admin-list{display:grid;gap:10px}.admin-row{background:var(--panel);border:1px solid var(--line);border-radius:15px;padding:15px}.admin-row-head{display:flex;justify-content:space-between;gap:12px}.stat span{display:block;color:var(--muted);font-size:13px}.stat b{display:block;font-size:30px;color:var(--olive2);margin-top:5px}.mini-table{width:100%;border-collapse:collapse}.mini-table th,.mini-table td{padding:10px;border-bottom:1px solid var(--line);text-align:left}.mini-table th{font-size:12px;color:var(--olive2);text-transform:uppercase}.footer{border-top:1px solid var(--line);padding:34px 0;color:var(--muted)}.footer-grid{display:grid;grid-template-columns:1.2fr 1fr 1fr;gap:20px}.footer-grid>div{display:flex;flex-direction:column;align-items:flex-start;gap:7px}.footer-logo{width:170px}.legal-page{padding:55px 0}.legal-copy{max-width:900px;color:#d6dadc}.toast{position:fixed;right:18px;bottom:18px;z-index:90;background:#242a20;border:1px solid #596846;color:#f6f7f4;padding:12px 16px;border-radius:12px;display:none;max-width:330px}
@media(max-width:850px){.nav{align-items:flex-start;flex-wrap:wrap;padding:10px 22px}.logo{width:170px}.nav-actions{width:100%;margin:0;overflow:auto;flex-wrap:nowrap}.hero,.path-grid,.grid-2,.grid-3,.chapter-grid,.lesson-layout,.admin-layout{grid-template-columns:1fr}.hero{padding-top:48px}.section-head{display:block}.hero-visual{height:320px}.lesson-aside{grid-row:2}.admin-nav{position:static;display:flex;overflow:auto}.admin-nav button{min-width:max-content}.slide-head{padding:14px 16px 8px}.slide-brand img{width:90px}.slide-body{padding:6px 16px 12px;grid-template-columns:1fr;overflow:auto}.slide-visual{display:none}.slide-foot{padding:8px 16px;font-size:9px}.scene-stage{aspect-ratio:4/3}.choice-grid{grid-template-columns:1fr}.footer-grid{grid-template-columns:1fr}}
/* AMC semantic visual system: Aziende = olive; Privati = graphite/steel. Never inverted. */
.business-btn{background:var(--olive)!important;color:#fff!important;border:1px solid var(--olive)!important}
.business-outline{background:#161a17!important;color:#dfe9ca!important;border:1px solid #6f7e4d!important;border-radius:12px;padding:12px 17px;font-weight:900}
.private-btn{background:#263245!important;color:#fff!important;border:1px solid #465b78!important;border-radius:12px;padding:12px 17px;font-weight:900}
.private-btn:hover{filter:brightness(1.1)}
.path-card:nth-child(1){border-color:#56633d;background:linear-gradient(180deg,#1b2019,#171a1c)}
.path-card:nth-child(2){border-color:#35465e;background:linear-gradient(180deg,#171d26,#171a1c)}
.path-card:nth-child(2) .tag{color:#9db5d5}
.hero-photo{background-image:linear-gradient(90deg,rgba(8,10,11,.15),rgba(8,10,11,.08)),url('assets/hypercar-workshop.png');background-size:cover;background-position:center}
.hero-photo .hero-chip{background:linear-gradient(90deg,rgba(7,9,10,.88),rgba(7,9,10,.62));}
.brand-btn{background:#f2f2ed;border-radius:14px;padding:6px 10px!important;border:1px solid #d8ddd1!important;box-shadow:0 8px 26px rgba(0,0,0,.25)}
.logo{filter:none!important;opacity:1!important}
.auth-type{display:flex;gap:8px;margin:14px 0 18px}.account-type{flex:1;border:1px solid var(--line);background:#111416;color:#fff;border-radius:10px;padding:10px;font-weight:800}.account-type.active[data-account-type="private"]{background:#263245;border-color:#526987}.account-type.active[data-account-type="business"]{background:var(--olive);border-color:var(--olive)}
.auth-message{min-height:24px;padding:8px 0;color:#dce4e8}.auth-message.error{color:#ff9e9e}.auth-message.success{color:#b9d78c}.auth-message.loading{color:#d7dce1}
@media(max-width:850px){.topbar{position:relative}.nav{padding:12px 16px}.brand-btn{width:100%;display:flex;justify-content:center}.logo{width:min(300px,88vw);height:auto;max-height:92px}.nav-actions{justify-content:center;gap:12px;overflow:visible}.nav-actions button{font-size:17px}.hero{padding:38px 20px 42px}.hero h1{font-size:clamp(40px,11vw,58px);line-height:.98}.hero-visual{height:300px}.page-hero{padding-left:20px;padding-right:20px}.path-card{min-height:auto}.primary,.secondary,.private-btn,.business-outline{width:100%;text-align:center}.actions,.stack-actions{width:100%}}
/* V2 master: premium dark, but brighter and readable. */
:root{--bg:#171b1e;--panel:#22272b;--panel2:#2b3136;--text:#fbfcfa;--muted:#c4cbd0;--line:#434b51;--olive:#7f914f;--olive2:#b2c77c}
body{background:linear-gradient(180deg,#171b1e 0,#1b2024 48%,#171b1e 100%)}
.topbar{background:#e7e7df;border-bottom:1px solid #c9cbc2;box-shadow:0 10px 28px rgba(0,0,0,.16)}
.nav{min-height:96px}.brand-btn{background:transparent!important;border:0!important;box-shadow:none!important;padding:0!important}.logo{width:230px;max-height:80px}
.nav-actions button{color:#151719;font-weight:750}.nav-actions button:hover{background:#d6d8cf}.olive-word{color:var(--olive2)}
.hero{padding-top:56px}.hero h1{max-width:720px}.hero .lead{color:#dce1e3}.hero-visual{height:440px;border-color:#586167;box-shadow:0 24px 55px rgba(0,0,0,.32)}
.hero-photo{background-image:linear-gradient(90deg,rgba(12,15,17,.04),rgba(12,15,17,.01)),url('assets/hypercar-workshop-v2.png')!important;background-position:center;background-size:cover}
.hero-photo .hero-chip{background:linear-gradient(90deg,rgba(15,18,20,.9),rgba(15,18,20,.62));border-color:rgba(255,255,255,.25)}
.path-card,.panel,.stat,.contact-card,.chapter-card{box-shadow:0 12px 30px rgba(0,0,0,.12)}
.business-btn{background:#7f914f!important;border-color:#9eb568!important}.private-btn{background:#303a43!important;border-color:#65727d!important}.business-outline{background:#232a24!important;border-color:#829458!important}
.wa-float{position:fixed;right:18px;bottom:18px;width:58px;height:58px;border-radius:50%;display:grid;place-items:center;background:#22a95b;color:white;font-weight:950;border:2px solid rgba(255,255,255,.8);box-shadow:0 12px 28px rgba(0,0,0,.35);z-index:80}
@media(max-width:850px){
 .topbar{position:relative}.nav{padding:10px 18px 12px;min-height:auto}.brand-btn{width:100%;justify-content:flex-start!important}.logo{width:220px!important;max-height:74px!important}.nav-actions{justify-content:space-between!important;width:100%;gap:4px!important}.nav-actions button{font-size:16px!important;padding:9px 8px!important}
 .hero{padding:36px 20px 42px}.hero h1{font-size:clamp(43px,12vw,62px)!important}.hero .lead{font-size:18px}.hero-visual{height:350px;margin-top:8px}.hero-chip{left:14px;right:14px;bottom:14px;padding:15px}.hero-chip b{font-size:25px}
 .section{padding:52px 0}.wa-float{width:54px;height:54px;right:14px;bottom:84px}
}
/* V2.1 — LIGHT MASTER. User-first readability in daylight. */
:root{
 --bg:#f4f3ee;--panel:#ffffff;--panel2:#eceeea;--text:#171a1c;--muted:#5f686e;--line:#d7dbd7;
 --olive:#748748;--olive2:#65783f;--graphite:#36424b;--private:#3e4b55;
}
body{background:linear-gradient(180deg,#f7f6f1 0%,#f1f1ec 100%);color:var(--text)}
.topbar{background:rgba(250,249,245,.97);border-bottom:1px solid #d7dad4;box-shadow:0 7px 22px rgba(22,27,30,.08)}
.nav-actions button,.footer button{color:#202427}.nav-actions button:hover{background:#eceee8}
p{color:#4e575d}.lead{color:#3f484e!important}.muted{color:#6d757a}.eyebrow,.tag{color:#6f8245}
.hero{padding-top:48px}.hero h1{color:#171a1c}.olive-word{color:#708344}
.hero-visual{border-color:#c8cec8;box-shadow:0 22px 48px rgba(25,31,34,.14);background:#dfe3df}
.hero-photo{background-image:linear-gradient(90deg,rgba(255,255,255,.02),rgba(255,255,255,0)),url('assets/hypercar-workshop-v2.png')!important}
.hero-photo .hero-chip{background:rgba(248,248,244,.90);border-color:rgba(255,255,255,.72);box-shadow:0 8px 24px rgba(0,0,0,.15)}
.hero-chip span{color:#64763e}.hero-chip b{color:#15191b}.hero-chip small{color:#515b61}
.section{border-top:1px solid #dde0dc}
.path-card,.panel,.stat,.contact-card,.chapter-card{background:#fff;border-color:#d8dcd8;box-shadow:0 10px 28px rgba(28,34,37,.07)}
.path-card:nth-child(1){border-color:#c9d2b5;background:linear-gradient(180deg,#fff,#f7f9f3)}
.path-card:nth-child(2){border-color:#cbd2d7;background:linear-gradient(180deg,#fff,#f5f7f8)}
.path-card:nth-child(2) .tag{color:#596d7c}
.business-btn{background:#748748!important;border-color:#748748!important;color:#fff!important}
.business-outline{background:#f5f7f2!important;color:#506132!important;border-color:#aebd8d!important}
.private-btn{background:#3d4952!important;border-color:#3d4952!important;color:#fff!important}
.review{background:#fff;border-left-color:#748748;box-shadow:0 7px 20px rgba(28,34,37,.06)}
.footer{background:#e8eae5;border-top:1px solid #d0d4cf;color:#50595f}.footer b{color:#202427}.footer-logo{filter:none}
.field input,.field textarea,.field select{background:#fff;border-color:#cfd4d0;color:#171a1c}.choice{background:#fff;color:#171a1c;border-color:#d1d6d2}.choice.selected{background:#eef2e7;border-color:#7d914f}
.admin-nav,.admin-row{background:#fff;border-color:#d5dad6}.admin-nav button{color:#202427}.admin-nav button.active,.admin-nav button:hover{background:#eef0ec}.stat b{color:#65783f}.mini-table th{color:#65783f}
.wa-float{background:#21a65a;color:#fff}
.social-label{font-weight:700;color:#4b555b}
@media(max-width:850px){
 body{background:#f5f4ef}.topbar{background:#faf9f5}.hero{padding-top:30px}.hero h1{font-size:clamp(40px,11.2vw,58px)!important}.hero-visual{height:330px}.hero-chip{background:rgba(250,250,247,.92)!important}.logo{width:205px!important;max-height:70px!important}.nav-actions button{color:#202427!important}
}
.text-btn{border:0;background:transparent;color:#536447;font-weight:800;padding:10px 4px}.text-btn:hover{text-decoration:underline}.footer-link{color:#34434c;font-weight:800}.footer-link:hover{text-decoration:underline}
/* V2.3 auth flow: explicit login/register modes */
.auth-mode-tabs{display:grid;grid-template-columns:1fr 1fr;gap:8px;margin:16px 0 20px;padding:5px;background:#eef0eb;border:1px solid #d4d8cf;border-radius:14px}
.auth-mode{border:0;border-radius:10px;padding:12px 10px;background:transparent;color:#4b5358;font-weight:900;letter-spacing:.02em}
.auth-mode.active{background:#fff;color:#151719;box-shadow:0 3px 10px rgba(28,33,35,.08)}
.auth-panel .field input{background:#fff!important;color:#151719!important;border-color:#cbd1c7!important}
.auth-panel .field label{color:#5a6368!important}
.auth-panel .primary{background:#7d914f!important;color:#fff!important;border-color:#7d914f!important;opacity:1!important}
.auth-panel .primary.hidden{display:none!important}
.auth-panel .text-btn{color:#607b3f!important}