:root{
  --bg:#f7f4ee;
  --bg-soft:#fbf8f1;
  --panel:#ffffff;
  --panel-2:#f1ede6;
  --panel-3:#fffaf0;
  --text:#1f1b16;
  --muted:#6d665f;
  --line:#e3ded6;
  --accent:#2f7cff;
  --accent-dark:#1c5fd4;
  --accent-2:#f2c94c;
  --warm:#b26b2c;
  --danger:#b42318;
  --shadow:0 12px 34px rgba(64,45,23,.10);
  --shadow-hover:0 18px 42px rgba(64,45,23,.16);
  --radius:18px;
}

*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Arial, sans-serif;
  background:
    radial-gradient(circle at top left, rgba(242,201,76,.22), transparent 34rem),
    radial-gradient(circle at 90% 5%, rgba(47,124,255,.10), transparent 28rem),
    var(--bg);
  color:var(--text);
  line-height:1.6;
}

a{color:var(--accent-dark); text-decoration:none}
a:hover{text-decoration:underline}
img{max-width:100%}
.container{width:min(1120px, calc(100% - 32px)); margin:0 auto}

.site-header{
  background:rgba(247,244,238,.88);
  backdrop-filter:blur(14px);
  border-bottom:1px solid var(--line);
  position:sticky;
  top:0;
  z-index:20;
}
.header-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:16px;
  padding:13px 0;
}
.brand{
  display:flex;
  align-items:center;
  gap:14px;
  color:var(--text);
}
.brand:hover{text-decoration:none}
.brand img{
  width:70px;
  height:auto;
  display:block;
}
.brand-title{
  font-weight:900;
  letter-spacing:.1px;
  line-height:1.05;
}
.brand-subtitle{
  color:var(--muted);
  font-size:.84rem;
  margin-top:2px;
}
.nav{
  display:flex;
  align-items:center;
  gap:16px;
  font-weight:900;
  font-size:.92rem;
  letter-spacing:.02em;
}
.nav a{
  color:var(--text);
  display:inline-flex;
  align-items:center;
}
.nav a:hover{
  color:var(--accent-dark);
  text-decoration:none;
}

.hero{padding:62px 0 34px}
.hero-grid{
  display:grid;
  grid-template-columns:1.02fr .98fr;
  gap:28px;
  align-items:start;
}
.kicker{
  color:var(--warm);
  font-weight:900;
  text-transform:uppercase;
  letter-spacing:.13em;
  font-size:.78rem;
  margin:0 0 10px;
}
h1{
  font-size:clamp(2.2rem, 4.8vw, 4.5rem);
  line-height:1.02;
  letter-spacing:-.055em;
  margin:0 0 16px;
}
h2{
  font-size:clamp(1.45rem, 2.5vw, 2.15rem);
  line-height:1.12;
  letter-spacing:-.03em;
  margin:0 0 14px;
}
h3{
  font-size:1.08rem;
  margin:1.2em 0 .35em;
}
.lede{
  font-size:clamp(1.05rem, 1.7vw, 1.25rem);
  color:var(--muted);
  max-width:66ch;
  margin:0;
}
.small-note{color:var(--muted); font-size:.93rem}

.card{
  background:linear-gradient(180deg, rgba(255,255,255,.96), rgba(255,250,240,.88));
  border:1px solid var(--line);
  border-radius:var(--radius);
  box-shadow:var(--shadow);
}
.tool-card{padding:22px}

.form-row{
  display:grid;
  grid-template-columns:1fr 170px;
  gap:12px;
}
label{font-weight:850; display:block; margin-bottom:8px}
input,select,button{
  width:100%;
  font:inherit;
  border-radius:13px;
}
input,select{
  background:#fffdf8;
  color:var(--text);
  border:1px solid var(--line);
  padding:13px 14px;
  outline:none;
}
input:focus,select:focus{
  border-color:rgba(47,124,255,.55);
  box-shadow:0 0 0 4px rgba(47,124,255,.10);
}
button{
  background:linear-gradient(90deg,var(--accent),var(--accent-2));
  color:#16120b;
  border:0;
  cursor:pointer;
  padding:14px 16px;
  font-weight:950;
}
button:hover{filter:brightness(1.03)}
.help{font-size:.92rem; color:var(--muted); margin:8px 0 12px}
.warning{display:none; color:var(--danger); font-weight:850; margin:10px 0 0}

.tabs{
  display:flex;
  flex-wrap:wrap;
  gap:8px;
  margin:16px 0;
}
.tab-btn{
  width:auto;
  padding:9px 12px;
  background:var(--panel-2);
  color:var(--text);
  border:1px solid var(--line);
  font-weight:850;
}
.tab-btn.active{
  background:#fff4c2;
  border-color:#e6c64c;
}

.results{margin-top:18px; display:none}
.result-head{
  display:flex;
  align-items:flex-start;
  justify-content:space-between;
  gap:12px;
  border-bottom:1px solid var(--line);
  padding-bottom:12px;
  margin-bottom:14px;
}
.badge{
  display:inline-flex;
  white-space:nowrap;
  align-items:center;
  border:1px solid rgba(178,107,44,.35);
  color:var(--warm);
  background:#fff8df;
  border-radius:999px;
  padding:5px 10px;
  font-size:.82rem;
  font-weight:900;
}
.scale-list{display:grid; gap:10px}
.scale-item{
  padding:12px 13px;
  background:var(--panel-3);
  border:1px solid var(--line);
  border-radius:14px;
}
.scale-item strong{display:block}
.scale-item span{color:var(--muted); font-size:.94rem}
.explain{
  background:#fffdf8;
  border:1px solid var(--line);
  border-radius:14px;
  padding:14px;
  color:var(--muted);
}

.section{padding:34px 0}
.content-grid{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:22px;
}
.info-card{padding:24px}
.info-card p{margin-top:0}

.tool-grid{
  display:grid;
  grid-template-columns:repeat(2, minmax(0, 1fr));
  gap:18px;
}
.tool-link-card{
  display:grid;
  grid-template-columns:78px 1fr;
  gap:16px;
  align-items:center;
  padding:19px;
  border:1px solid var(--line);
  border-radius:18px;
  background:linear-gradient(180deg,#fff,#fff8ec);
  box-shadow:var(--shadow);
  transition:transform .18s ease, box-shadow .18s ease, border-color .18s ease;
  color:var(--text);
}
.tool-link-card:hover{
  text-decoration:none;
  transform:translateY(-3px);
  box-shadow:var(--shadow-hover);
  border-color:#e2bd4e;
}
.tool-thumb{
  width:78px;
  height:78px;
  border-radius:18px;
  display:flex;
  align-items:center;
  justify-content:center;
  background:
    radial-gradient(circle at 25% 20%, rgba(242,201,76,.50), transparent 28px),
    linear-gradient(135deg,#fff4c2,#eaf1ff);
  border:1px solid var(--line);
  font-size:2.25rem;
}
.tool-link-card strong{
  display:block;
  font-size:1.08rem;
  margin-bottom:4px;
}
.tool-link-card p{
  color:var(--muted);
  margin:0;
}
.status-pill{
  display:inline-flex;
  align-items:center;
  margin-top:9px;
  font-size:.78rem;
  font-weight:900;
  color:var(--warm);
  background:#fff4c2;
  border:1px solid #ead375;
  border-radius:999px;
  padding:4px 8px;
}

.cta{
  padding:28px;
  text-align:center;
}
.cta img{
  width:135px;
  max-width:65%;
  margin-bottom:8px;
}
.cta .lede{margin-left:auto;margin-right:auto}
.faq details{
  background:#fffdf8;
  border:1px solid var(--line);
  border-radius:14px;
  padding:14px 16px;
  margin-bottom:10px;
}
.faq summary{
  cursor:pointer;
  font-weight:900;
}
.footer{
  border-top:1px solid var(--line);
  margin-top:34px;
  padding:26px 0;
  color:var(--muted);
  font-size:.94rem;
}
.breadcrumb{
  margin:18px 0 0;
  color:var(--muted);
  font-size:.92rem;
}
.breadcrumb a{color:var(--muted)}

@media(max-width:860px){
  .hero-grid,.content-grid,.tool-grid{grid-template-columns:1fr}
  .form-row{grid-template-columns:1fr}
  .nav{
  display:flex;
  align-items:center;
  gap:16px;
  font-weight:900;
  font-size:.92rem;
  letter-spacing:.02em;
}
  .brand img{width:56px}
  .tool-link-card{grid-template-columns:64px 1fr}
  .tool-thumb{width:64px;height:64px;font-size:1.9rem}
}


/* Tool #2 additions */
textarea{
  width:100%;
  min-height:105px;
  font:inherit;
  border-radius:13px;
  background:#fffdf8;
  color:var(--text);
  border:1px solid var(--line);
  padding:13px 14px;
  resize:vertical;
  outline:none;
}
textarea:focus{
  border-color:rgba(47,124,255,.55);
  box-shadow:0 0 0 4px rgba(47,124,255,.10);
}
.mini-list{margin-top:12px}
.mini-list p{margin:.55rem 0}
details{margin-top:10px}
summary{cursor:pointer;font-weight:850}
.results-actions{display:flex;flex-wrap:wrap;gap:10px;margin-top:14px}


/* Chord naming guide */
.naming-guide{
  margin:16px 0;
  background:#fffdf8;
  border:1px solid var(--line);
  border-radius:14px;
  padding:14px 16px;
}
.naming-guide h3{
  font-size:1.05rem;
}
.chord-format-grid{
  display:grid;
  grid-template-columns:repeat(2, minmax(0, 1fr));
  gap:10px;
  margin-top:14px;
}
.chord-format{
  background:var(--panel-3);
  border:1px solid var(--line);
  border-radius:13px;
  padding:11px 12px;
}
.chord-format code{
  font-weight:900;
  color:var(--warm);
  background:#fff4c2;
  border:1px solid #ead375;
  border-radius:7px;
  padding:1px 5px;
}
@media(max-width:700px){
  .chord-format-grid{grid-template-columns:1fr}
}


/* Progression tool layout refinement */
.progression-hero-grid{
  grid-template-columns:minmax(0, .92fr) minmax(420px, 1.08fr);
  align-items:start;
}
.progression-left-copy{
  display:flex;
  flex-direction:column;
  gap:18px;
}
.stacked-info{
  display:grid;
  gap:16px;
  margin-top:8px;
}
.compact-info-card{
  padding:18px;
}
.compact-info-card h2{
  font-size:1.18rem;
  margin-bottom:8px;
}
.compact-info-card p{
  font-size:.96rem;
  margin-bottom:.7rem;
}
.compact-info-card p:last-child{
  margin-bottom:0;
}
@media(max-width:980px){
  .progression-hero-grid{
    grid-template-columns:1fr;
  }
}


/* Progression left-column chord examples */
.compact-info-card .chord-format-grid{
  grid-template-columns:repeat(2, minmax(0, 1fr));
  margin-top:10px;
}
.compact-info-card .chord-format{
  padding:9px 10px;
  font-size:.9rem;
}
.compact-info-card h3{
  margin-top:14px;
}
@media(max-width:520px){
  .compact-info-card .chord-format-grid{
    grid-template-columns:1fr;
  }
}


.social-icon{
  width:32px;
  height:32px;
  border-radius:999px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  background:#fffdf8;
  border:1px solid var(--line);
  box-shadow:0 4px 12px rgba(64,45,23,.07);
}
.social-icon svg{
  width:18px;
  height:18px;
  fill:currentColor;
}
.social-icon:hover{
  transform:translateY(-1px);
  box-shadow:var(--shadow);
}
@media(max-width:760px){
  .header-inner{
    align-items:flex-start;
    flex-direction:column;
  }
  .nav{
    width:100%;
    flex-wrap:wrap;
    gap:12px;
  }
}


/* Tool #2 fretboard upgrade */
.fretboard-chooser{
  display:flex;
  flex-wrap:wrap;
  gap:10px;
  margin:12px 0 10px;
}
.fretboard-toggle{
  appearance:none;
  border:1px solid var(--line);
  background:#fffdf8;
  color:var(--text);
  border-radius:999px;
  padding:8px 12px;
  font:inherit;
  font-weight:850;
  cursor:pointer;
  transition:all .18s ease;
}
.fretboard-toggle:hover{
  transform:translateY(-1px);
}
.fretboard-toggle.active{
  background:#fff1c6;
  border-color:#e1c96d;
}
.fretboard-card{
  background:#fffdf8;
  border:1px solid var(--line);
  border-radius:16px;
  padding:14px;
  box-shadow:0 8px 22px rgba(64,45,23,.06);
}
.fretboard-caption{
  font-size:.95rem;
  margin-bottom:12px;
}
.fretboard-wrap{
  overflow-x:auto;
}
.fretboard-grid{
  display:grid;
  grid-template-columns:44px repeat(13, minmax(42px, 1fr));
  min-width:650px;
  border:1px solid var(--line);
  border-radius:14px;
  overflow:hidden;
  background:#fff8eb;
}
.fretboard-corner,
.fret-number,
.string-label,
.fret-cell{
  min-height:46px;
  display:flex;
  align-items:center;
  justify-content:center;
}
.fretboard-corner{
  background:#f6ead0;
  border-right:1px solid var(--line);
  border-bottom:1px solid var(--line);
}
.fret-number{
  font-size:.85rem;
  font-weight:900;
  background:#f6ead0;
  border-right:1px solid var(--line);
  border-bottom:1px solid var(--line);
}
.string-label{
  font-weight:900;
  background:#fdf4df;
  border-right:1px solid var(--line);
  border-bottom:1px solid var(--line);
}
.fret-cell{
  position:relative;
  background:#fffdf8;
  border-right:1px solid rgba(122,95,60,.15);
  border-bottom:1px solid rgba(122,95,60,.15);
}
.nut-cell{
  background:#fbf0da;
}
.fret-ghost{
  width:100%;
  height:2px;
  background:rgba(122,95,60,.20);
  border-radius:999px;
}
.scale-note{
  position:relative;
  z-index:1;
  width:30px;
  height:30px;
  border-radius:999px;
  display:flex;
  align-items:center;
  justify-content:center;
  font-size:.72rem;
  font-weight:900;
  color:#5a431d;
  background:#f6db88;
  border:1px solid #d2b457;
  box-shadow:0 3px 8px rgba(85,62,17,.12);
}
.root-note{
  background:#e7b545;
  color:#3f2c08;
  border-color:#c79524;
}


/* Fretboard position filter refinement */
.fretboard-chooser + .fretboard-chooser{
  margin-top:-2px;
}