/* Chord Guru — brand tokens copied from the app (sblaketurner/ChordGuru @ develop, src/index.css + src/App.css) */
:root{
  --cg-primary-yellow:#fde047; --cg-primary-yellow-rgb:253,224,71;
  --cg-primary-blue:#2563eb;   --cg-primary-blue-rgb:37,99,235;
  --cg-primary-fuchsia:#d946ef;--cg-primary-fuchsia-rgb:217,70,239;
  --cg-primary-green:#4ade80;  --cg-primary-green-rgb:74,222,128;
  --cg-clean:#57ff2a;          /* .grade-clean in App.css */
  --cg-nomatch:#6b6b6b;        /* .no-match-pulse in App.css */
  --bg:#000; --panel:#07080b; --line:rgba(255,255,255,.09);
  --text:#fff; --muted:#a3a3a3; --soft:rgba(255,255,255,.72);
  --font:system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,sans-serif; /* app font stack */
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{background:var(--bg);color:var(--text);font:400 17px/1.6 var(--font);-webkit-font-smoothing:antialiased;overflow-x:hidden}
img{max-width:100%;display:block}
a{color:inherit}
.wrap{width:100%;max-width:1120px;margin:0 auto;padding:0 22px}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0)}

/* gradient text — same stops as .session-title-gradient in the app */
.grad{background:linear-gradient(90deg,var(--cg-primary-yellow) 0%,#2563eb 33.333%,var(--cg-primary-green) 66.666%,var(--cg-primary-yellow) 100%);background-size:200% 100%;-webkit-background-clip:text;background-clip:text;color:transparent;animation:wave 16s linear infinite}
@keyframes wave{to{background-position:-200% 0}}

.motto{font-size:clamp(.72rem,3.17vw,.9rem);font-weight:600;letter-spacing:.24em;text-transform:uppercase;color:rgba(var(--cg-primary-fuchsia-rgb),.85);line-height:1.35}
.kicker{font-size:.78rem;font-weight:800;letter-spacing:.22em;text-transform:uppercase;margin-bottom:12px}
h1,h2,h3{font-weight:900;text-transform:uppercase;letter-spacing:.04em;line-height:1.05}
h2{font-size:clamp(1.85rem,6vw,3rem);margin-bottom:16px}
.lead{color:var(--soft);font-size:clamp(1rem,2.6vw,1.15rem);max-width:36em}

/* nav */
.nav{position:sticky;top:0;z-index:50;background:rgba(0,0,0,.72);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.nav .wrap{display:flex;align-items:center;justify-content:space-between;height:62px}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none}
.brand .icon{width:34px;height:34px;filter:drop-shadow(0 0 8px rgba(var(--cg-primary-green-rgb),.28))}
.brand .word{width:126px;height:auto;filter:drop-shadow(0 0 12px rgba(255,255,255,.12))}
.nav-cta{font-size:.72rem;font-weight:800;letter-spacing:.16em;text-transform:uppercase;text-decoration:none;padding:10px 14px;border-radius:999px;border:1px solid rgba(var(--cg-primary-green-rgb),.6);color:#86efac;box-shadow:0 0 10px rgba(var(--cg-primary-green-rgb),.22);transition:.2s}
.nav-cta:hover{border-color:var(--cg-primary-green);color:#bbf7d0;box-shadow:0 0 18px rgba(var(--cg-primary-green-rgb),.4)}

/* buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:10px;font:800 1rem/1 var(--font);letter-spacing:.06em;text-transform:uppercase;text-decoration:none;padding:18px 28px;border-radius:14px;border:0;cursor:pointer;background:var(--cg-primary-yellow);color:#000;box-shadow:0 0 0 1px rgba(var(--cg-primary-yellow-rgb),.5),0 10px 30px rgba(var(--cg-primary-yellow-rgb),.22);transition:transform .15s,box-shadow .2s}
.btn:hover{transform:translateY(-2px);box-shadow:0 0 0 1px var(--cg-primary-yellow),0 14px 40px rgba(var(--cg-primary-yellow-rgb),.35)}
.btn:focus-visible,.nav-cta:focus-visible,input:focus-visible,select:focus-visible{outline:2px solid var(--cg-primary-green);outline-offset:3px}
.btn-ghost{background:transparent;color:#fff;box-shadow:inset 0 0 0 1px rgba(255,255,255,.22)}
.btn-ghost:hover{box-shadow:inset 0 0 0 1px #fff}
.btn-help{background:var(--cg-primary-green);color:#000;font-size:1.15rem;padding:22px 34px;box-shadow:0 0 0 1px rgba(var(--cg-primary-green-rgb),.5),0 10px 30px rgba(var(--cg-primary-green-rgb),.3)}
.btn-help:hover{box-shadow:0 0 0 1px var(--cg-primary-green),0 14px 40px rgba(var(--cg-primary-green-rgb),.4)}
.btn-early{font-size:.85rem;padding:13px 20px}

/* hero */
.hero{position:relative;padding:56px 0 72px;overflow:hidden}
.hero::before{content:"";position:absolute;inset:-20% -10% auto;height:120%;background:
  radial-gradient(38% 40% at 18% 30%,rgba(var(--cg-primary-yellow-rgb),.10),transparent 70%),
  radial-gradient(34% 40% at 82% 20%,rgba(var(--cg-primary-blue-rgb),.16),transparent 70%),
  radial-gradient(40% 45% at 70% 85%,rgba(var(--cg-primary-green-rgb),.10),transparent 70%),
  radial-gradient(30% 30% at 40% 70%,rgba(var(--cg-primary-fuchsia-rgb),.08),transparent 70%);pointer-events:none}
.hero .wrap{position:relative;display:grid;gap:48px;align-items:center}
.hero-copy{text-align:center;display:flex;flex-direction:column;align-items:center}
.hero-logo{width:clamp(120px,34vw,168px);filter:drop-shadow(0 0 28px rgba(var(--cg-primary-green-rgb),.25));animation:float 6s ease-in-out infinite}
@keyframes float{50%{transform:translateY(-6px)}}
.hero-word{width:min(78vw,380px);margin:18px 0 12px;filter:drop-shadow(0 0 14px rgba(255,255,255,.12))}
.hero h1{font-size:clamp(2.3rem,9vw,4.4rem);margin:26px 0 16px}
.hero .lead{margin:0 auto 28px}
.hero-actions,.cta-actions{display:flex;flex-wrap:wrap;gap:12px;justify-content:center;align-items:center}
.tiny{font-size:.82rem;color:var(--muted);margin-top:14px}

/* phone mockup — mirrors the app's Active Session screen */
.phone{position:relative;width:min(300px,78vw);aspect-ratio:9/19.2;margin:0 auto;border-radius:44px;background:#000;border:2px solid #22252d;box-shadow:0 0 0 8px #0b0c10,0 0 0 9px #22252d,0 40px 80px rgba(0,0,0,.6),0 0 90px rgba(var(--cg-primary-green-rgb),.12);overflow:hidden;letter-spacing:.08em}
.phone::before{content:"";position:absolute;top:12px;left:50%;transform:translateX(-50%);width:34%;height:24px;border-radius:20px;background:#0b0c10;z-index:3}
.screen{position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center}
.s-top{position:absolute;top:52px;left:0;right:0;display:flex;justify-content:center;align-items:center;gap:6px}
.s-top img.i{width:20px}.s-top img.w{width:86px}
.grade{height:62px;display:flex;align-items:center;justify-content:center;font-weight:900;font-size:2.7rem;line-height:1;margin-bottom:6px}
.grade span{animation:pop 1.2s ease-out forwards}
.g-ok{color:var(--cg-primary-yellow);text-shadow:0 0 8px rgba(var(--cg-primary-yellow-rgb),.2)}
.g-good{color:var(--cg-primary-blue);text-shadow:0 0 8px rgba(var(--cg-primary-blue-rgb),.2)}
.g-clean{color:var(--cg-clean);text-shadow:0 0 8px rgba(87,255,42,.22)}
@keyframes pop{0%{opacity:0;transform:scale(.88)}10%{opacity:1;transform:scale(1.04)}90%{opacity:1;transform:scale(1)}100%{opacity:0;transform:scale(.98)}}
.chord{font-weight:900;font-size:9.5rem;line-height:.8;color:#fff;text-shadow:0 0 14px rgba(255,255,255,.3),0 0 34px rgba(255,255,255,.105);transition:color .09s,transform .09s}
.chord.nomatch{color:var(--cg-nomatch);transform:scale(.985);text-shadow:0 0 10px rgba(180,180,180,.35)}
.wave{position:absolute;bottom:22%;left:50%;transform:translateX(-50%);width:62%;height:44px;display:flex;align-items:center;justify-content:center;gap:2px}
.wave::before{content:"";position:absolute;left:0;right:0;top:50%;height:2px;transform:translateY(-50%);background:rgba(var(--cg-primary-fuchsia-rgb),.58);box-shadow:0 0 6px rgba(var(--cg-primary-fuchsia-rgb),.48),0 0 14px rgba(var(--cg-primary-fuchsia-rgb),.16)}
.wave i{position:relative;width:3px;min-height:3px;height:var(--h,20px);border-radius:1px;background:var(--cg-primary-fuchsia);box-shadow:0 0 5px rgba(var(--cg-primary-fuchsia-rgb),.5);animation:bar 1.1s ease-in-out infinite}
@keyframes bar{0%,100%{height:4px}50%{height:var(--h,30px)}}
.s-ctrl{position:absolute;bottom:7%;left:9%;right:9%;display:flex;justify-content:center;gap:8px}
.s-ctrl b{font-size:.5rem;font-weight:700;letter-spacing:.16em;text-transform:uppercase;color:#86efac;border:1px solid rgba(var(--cg-primary-green-rgb),.55);border-radius:999px;padding:7px 12px;box-shadow:0 0 10px rgba(var(--cg-primary-green-rgb),.22)}
.next{position:absolute;bottom:31%;left:0;right:0;text-align:center;font-size:.62rem;font-weight:700;letter-spacing:.22em;text-transform:uppercase;color:var(--muted)}

/* sections */
section.block{padding:84px 0;border-top:1px solid var(--line)}
.center{text-align:center}.center .lead{margin:0 auto}
.steps{display:grid;gap:16px;margin-top:40px;counter-reset:s}
.step{position:relative;background:var(--panel);border:1px solid var(--line);border-radius:22px;padding:28px 24px 26px;overflow:hidden}
.step::after{content:"";position:absolute;inset:auto 0 0 0;height:3px;background:var(--c)}
.step .n{display:inline-flex;width:44px;height:44px;border-radius:50%;align-items:center;justify-content:center;font-weight:900;font-size:1.1rem;color:#000;background:var(--c);box-shadow:0 0 18px rgba(var(--rgb),.35);margin-bottom:18px}
.step h3{font-size:1.25rem;margin-bottom:8px}
.step p{color:var(--soft);font-size:.98rem}

.proof .wrap{display:grid;gap:44px;align-items:center}
.clip{position:relative;width:min(320px,82vw);aspect-ratio:9/16;margin:0 auto;border-radius:28px;border:2px dashed rgba(var(--cg-primary-fuchsia-rgb),.55);background:radial-gradient(60% 50% at 50% 40%,rgba(var(--cg-primary-fuchsia-rgb),.12),transparent 70%),#05050a;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;padding:28px;gap:14px}
.play{width:74px;height:74px;border-radius:50%;display:flex;align-items:center;justify-content:center;background:rgba(var(--cg-primary-fuchsia-rgb),.15);border:1px solid rgba(var(--cg-primary-fuchsia-rgb),.6);box-shadow:0 0 30px rgba(var(--cg-primary-fuchsia-rgb),.35)}
.play svg{width:28px;margin-left:4px;fill:#f5d0fe}
.clip .t{font-weight:900;letter-spacing:.14em;text-transform:uppercase;font-size:.9rem}
.clip .s{font-size:.8rem;color:var(--muted)}
.scale{display:grid;gap:12px;margin-top:28px}
.chip{display:flex;align-items:center;gap:16px;background:var(--panel);border:1px solid var(--line);border-radius:16px;padding:16px 18px}
.chip strong{min-width:104px;white-space:nowrap;font-weight:900;font-size:1.25rem;letter-spacing:.06em;text-transform:uppercase}
.chip span{color:var(--soft);font-size:.95rem}
.chip.nm strong{color:var(--cg-nomatch)}
.study{margin-top:22px;display:flex;gap:12px;align-items:flex-start;padding:16px 18px;border-radius:16px;border:1px solid rgba(var(--cg-primary-green-rgb),.3);background:rgba(var(--cg-primary-green-rgb),.05);font-size:.95rem;color:var(--soft)}
.study b{color:#bbf7d0}

/* signup */
.signup{position:relative;overflow:hidden}
.signup::before{content:"";position:absolute;inset:0;background:radial-gradient(50% 60% at 50% 0%,rgba(var(--cg-primary-blue-rgb),.18),transparent 70%);pointer-events:none}
.card{position:relative;max-width:640px;margin:0 auto;background:linear-gradient(#07080b,#07080b) padding-box,linear-gradient(90deg,var(--cg-primary-yellow),var(--cg-primary-blue),var(--cg-primary-green),var(--cg-primary-fuchsia)) border-box;border:1.5px solid transparent;border-radius:28px;padding:40px 24px;text-align:center}
form{display:grid;gap:12px;margin-top:26px;text-align:left}
label{font-size:.75rem;font-weight:800;letter-spacing:.16em;text-transform:uppercase;color:var(--muted)}
input,select{width:100%;font:inherit;color:#fff;background:#0b0d12;border:1px solid #2a2e38;border-radius:14px;padding:16px}
select{appearance:none;background-image:linear-gradient(45deg,transparent 50%,#a3a3a3 50%),linear-gradient(135deg,#a3a3a3 50%,transparent 50%);background-position:calc(100% - 22px) 50%,calc(100% - 16px) 50%;background-size:6px 6px;background-repeat:no-repeat}
form .btn{width:100%;margin-top:6px}
.fine{font-size:.8rem;color:var(--muted);text-align:center;margin-top:12px}
.fine a{color:#f5d0fe}
.thanks{display:none;margin-top:24px;padding:20px;border-radius:16px;background:rgba(87,255,42,.07);border:1px solid rgba(87,255,42,.4)}
.thanks strong{color:var(--cg-clean);font-size:1.3rem;letter-spacing:.08em;text-transform:uppercase;font-weight:900}
.thanks p{color:var(--soft);margin-top:6px;font-size:.95rem}

/* closing CTA band */
.cta-band{position:relative;overflow:hidden;padding:64px 0;text-align:center}
.cta-band::before{content:"";position:absolute;inset:0;background:radial-gradient(50% 80% at 50% 50%,rgba(var(--cg-primary-green-rgb),.10),transparent 70%);pointer-events:none}
.cta-actions{position:relative}

/* footer */
footer{border-top:1px solid var(--line);padding:56px 0 40px;text-align:center}
.f-brand{display:flex;flex-direction:column;align-items:center;gap:12px}
.f-brand .icon{width:56px}.f-brand .word{width:180px}
.social{display:flex;justify-content:center;flex-wrap:wrap;gap:10px;margin:28px 0 22px;list-style:none}
.social a{display:flex;align-items:center;gap:8px;text-decoration:none;font-size:.88rem;font-weight:600;padding:10px 14px;border-radius:12px;background:rgba(255,255,255,.05);border:1px solid var(--line);transition:.2s}
.social a:hover{border-color:rgba(255,255,255,.3);background:rgba(255,255,255,.08)}
.social svg{width:18px;height:18px;fill:currentColor}
.f-links{display:flex;justify-content:center;flex-wrap:wrap;gap:8px 22px;font-size:.9rem;color:var(--muted)}
.f-links a{text-decoration:none}.f-links a:hover{color:#fff}
.legal{margin-top:18px;font-size:.78rem;color:#6b7280}

/* desktop */
@media (min-width:900px){
  .hero{padding:80px 0 110px}
  .hero .wrap{grid-template-columns:1.15fr .85fr}
  .hero-copy{text-align:left;align-items:flex-start}
  .hero .lead{margin:0 0 30px}
  .hero .hero-actions{justify-content:flex-start}
  .hero-brand{display:flex;align-items:center;gap:22px}
  .hero-word{margin:0}
  .steps{grid-template-columns:repeat(3,1fr)}
  .proof .wrap{grid-template-columns:.9fr 1.1fr}
  .card{padding:52px 56px}
  form{grid-template-columns:1.25fr 1fr}
  form .full{grid-column:1/-1}
}
@media (prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}}

/* privacy page */
.doc{max-width:760px;margin:0 auto;padding:48px 22px 80px}
.draft{display:flex;gap:12px;align-items:flex-start;padding:16px 18px;border-radius:14px;border:1px solid rgba(var(--cg-primary-yellow-rgb),.55);background:rgba(var(--cg-primary-yellow-rgb),.08);color:#fef9c3;font-size:.95rem;margin-bottom:34px}
.draft b{color:var(--cg-primary-yellow);letter-spacing:.14em}
.doc h1{font-size:clamp(2rem,7vw,3rem);margin-bottom:8px}
.doc h2{font-size:1.15rem;margin:36px 0 10px;letter-spacing:.08em}
.doc p,.doc li{color:var(--soft);margin-bottom:10px}
.doc ul{padding-left:22px}
.doc .confirm{background:rgba(var(--cg-primary-fuchsia-rgb),.14);color:#f5d0fe;border-radius:6px;padding:1px 6px;font-size:.85em;font-weight:600}
.doc a{color:#f5d0fe}

.nowrap-lg{white-space:nowrap}
@media (max-width:600px){.nowrap-lg{white-space:normal}}

.hero-tagline{margin:18px 0 6px;font-weight:800;text-transform:uppercase;letter-spacing:.14em;font-size:.95rem;color:var(--cg-primary-fuchsia,#d946ef)}
@media (max-width:600px){.hero-tagline{text-align:center}}

.hero-tagline{font-size:1.25rem;font-weight:900;letter-spacing:.1em}

.tagline-band{padding:56px 2vw;border-top:1px solid rgba(255,255,255,.06);border-bottom:1px solid rgba(255,255,255,.06);background:radial-gradient(60% 100% at 50% 50%,rgba(var(--cg-primary-fuchsia-rgb),.10),transparent 70%),#000;text-align:center;overflow:hidden}
.big-tagline{margin:0;color:var(--cg-primary-fuchsia);font-weight:900;text-transform:uppercase;letter-spacing:.02em;line-height:1.05;font-size:3.05vw;white-space:nowrap;text-shadow:0 0 24px rgba(var(--cg-primary-fuchsia-rgb),.35)}
@media (max-width:700px){.big-tagline{white-space:normal;font-size:2.1rem}}

.learn{font-size:clamp(3.5rem,10vw,7rem);letter-spacing:.08em}

.helper-check{display:flex;align-items:center;gap:10px;justify-content:center;font-weight:600;color:#e5e5e5;cursor:pointer;margin-top:4px}
.helper-check input{width:20px;height:20px;accent-color:var(--cg-primary-green)}
.helper-fields{display:none;grid-template-columns:1fr 1fr;gap:12px}
@media (max-width:600px){.helper-fields{grid-template-columns:1fr}}
#help-build{position:relative;top:-80px;display:block}