/* AirKords — design system (same family as airomote.com, tuned for guitar) */
:root{
  --bg:#0b0d12; --bg-band:#0f1114; --bg-elev:#12151d; --bg-elev-2:#191d27;
  --surface:rgba(255,255,255,.035); --surface-hover:rgba(255,255,255,.06);
  --border:rgba(255,255,255,.09); --border-strong:rgba(255,255,255,.16);
  --text:#f3f1ea; --text-dim:rgba(243,241,234,.64); --text-faint:rgba(243,241,234,.4);
  --brand:#f5a524; --brand-bright:#ffc04d; --brand-deep:#b86f00; --brand-ink:#2a1700;
  --brand-soft:rgba(245,165,36,.15); --brand-line:rgba(245,165,36,.42);
  --acoustic:#f5a524; --rock:#ff7a45; --metal:#ff4d5e; --ai:#9b7dff; --enhance:#3ddc97;
  --acoustic-soft:rgba(245,165,36,.15); --rock-soft:rgba(255,122,69,.16); --metal-soft:rgba(255,77,94,.16);
  --ai-soft:rgba(155,125,255,.18); --enhance-soft:rgba(61,220,151,.16);
  --danger:#ff5c6c; --ok:#3ddc97;
  --radius-sm:10px; --radius:18px; --radius-lg:22px; --radius-xl:32px;
  --page-pad:clamp(16px,4vw,56px); --nav-h:68px;
  --ease:cubic-bezier(.2,.8,.2,1); --ease-out:cubic-bezier(.16,1,.3,1);
  --font:"Inter","SF Pro Display",-apple-system,BlinkMacSystemFont,"Segoe UI Variable","Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  --mono:"JetBrains Mono","SF Mono","Cascadia Code",Consolas,monospace;
  color-scheme:dark;
}
body[data-voice=rock]{--brand:#ff7a45;--brand-bright:#ff9a6e;--brand-soft:rgba(255,122,69,.16);--brand-line:rgba(255,122,69,.42);--brand-ink:#2a0d00}
body[data-voice=metal]{--brand:#ff4d5e;--brand-bright:#ff7482;--brand-soft:rgba(255,77,94,.16);--brand-line:rgba(255,77,94,.45);--brand-ink:#2a0006}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--text);font:400 16px/1.45 var(--font);-webkit-font-smoothing:antialiased;overflow-x:hidden}
img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
button,input,select,textarea{font:inherit;color:inherit}
:focus-visible{outline:2px solid var(--brand);outline-offset:3px;border-radius:8px}
.wrap{max-width:1180px;margin:0 auto;padding:0 var(--page-pad)}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0)}

/* ---------- type ---------- */
.eyebrow{font-size:12.5px;font-weight:700;letter-spacing:.16em;text-transform:uppercase;color:var(--text-faint)}
.eyebrow--brand{color:var(--brand)}
.h-display{font-size:clamp(3.2rem,9vw,6.2rem);font-weight:850;line-height:.92;letter-spacing:-.045em;margin:18px 0 0}
.h-display span{display:block}
.h-display .accent{color:var(--brand)}
.section-h{font-size:clamp(2rem,4.6vw,2.9rem);font-weight:800;line-height:1.04;letter-spacing:-.03em;margin:10px 0 0}
.section-sub{color:var(--text-dim);font-size:clamp(1rem,1.6vw,1.12rem);max-width:640px;margin:14px 0 0;line-height:1.55}
.dim{color:var(--text-dim)} .faint{color:var(--text-faint)}
.mono{font-family:var(--mono)}

/* ---------- buttons ---------- */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;border-radius:999px;border:1px solid transparent;padding:13px 24px;font-weight:650;letter-spacing:-.01em;cursor:pointer;min-height:48px;transition:transform var(--dur,.22s) var(--ease),background .2s,border-color .2s,box-shadow .2s;white-space:nowrap}
.btn:active{transform:scale(.97)}
.btn--brand{background:var(--brand);color:var(--brand-ink);box-shadow:0 10px 30px -12px rgba(245,165,36,.75)}
.btn--brand:hover{background:var(--brand-bright)}
.btn--line{background:transparent;border-color:var(--border-strong)}
.btn--line:hover{background:var(--surface-hover)}
.btn--ghost{background:var(--surface);border-color:var(--border)}
.btn--ghost:hover{background:var(--surface-hover)}
.btn--lg{padding:15px 28px;font-size:16px;min-height:54px}
.btn--sm{padding:9px 16px;min-height:40px;font-size:14px}
.btn[disabled]{opacity:.45;cursor:default;transform:none}
.btn--ai{background:var(--ai);color:#16093a;box-shadow:0 10px 30px -12px rgba(155,125,255,.8)}
.btn--danger{background:transparent;border-color:rgba(255,92,108,.4);color:var(--danger)}

/* ---------- nav ---------- */
.nav{position:sticky;top:0;z-index:50;background:rgba(11,13,18,.72);backdrop-filter:saturate(1.4) blur(14px);-webkit-backdrop-filter:saturate(1.4) blur(14px);border-bottom:1px solid transparent;transition:border-color .2s}
.nav.scrolled{border-bottom-color:var(--border)}
.nav__in{height:var(--nav-h);display:flex;align-items:center;justify-content:space-between;gap:16px}
.brand{display:flex;align-items:center;gap:10px;font-weight:750;font-size:18px;letter-spacing:-.02em}
.brand__mark{width:26px;height:26px;border-radius:8px;background:var(--brand);display:grid;place-items:center;box-shadow:0 0 18px -4px rgba(245,165,36,.8)}
.brand__mark svg{width:16px;height:16px}
.brand b{color:var(--brand);font-weight:750}
.nav__links{display:flex;gap:4px}
.nav__links a{padding:8px 14px;border-radius:999px;color:var(--text-dim);font-weight:550;font-size:15px}
.nav__links a:hover,.nav__links a[aria-current=page]{color:var(--text);background:var(--surface-hover)}
.nav__right{display:flex;align-items:center;gap:10px}
.burger{display:none;width:44px;height:44px;border-radius:12px;border:1px solid var(--border);background:var(--surface);cursor:pointer;place-items:center}
.burger svg{width:20px;height:20px}
.mnav{display:none}
@media (max-width:820px){
  .nav__links{display:none}
  .burger{display:grid}
  .mnav.open{display:flex;flex-direction:column;gap:2px;padding:8px var(--page-pad) 18px;border-bottom:1px solid var(--border)}
  .mnav a{padding:14px 6px;font-weight:600;font-size:18px;border-bottom:1px solid var(--border)}
}

/* ---------- sections ---------- */
.band{padding:clamp(64px,9vw,104px) 0}
.band--alt{background:var(--bg-band)}
.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-lg)}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:16px}
.grid-4{display:grid;grid-template-columns:repeat(4,1fr);gap:16px}
@media (max-width:980px){.grid-4{grid-template-columns:repeat(2,1fr)}}
@media (max-width:860px){.grid-3,.grid-2{grid-template-columns:1fr}}
@media (max-width:520px){.grid-4{grid-template-columns:1fr}}
.kicker{font-size:12px;font-weight:700;letter-spacing:.14em;text-transform:uppercase}
.badge{display:inline-flex;align-items:center;gap:6px;border-radius:999px;padding:4px 10px;font-size:12px;font-weight:650;letter-spacing:.02em;background:var(--surface-hover);color:var(--text-dim);white-space:nowrap}
.badge--acoustic{background:var(--acoustic-soft);color:var(--acoustic)}
.badge--rock{background:var(--rock-soft);color:var(--rock)}
.badge--metal{background:var(--metal-soft);color:var(--metal)}
.badge--rough{background:var(--surface-hover);color:var(--text-dim)}
.badge--enhanced{background:var(--enhance-soft);color:var(--enhance)}
.badge--song{background:var(--ai-soft);color:var(--ai)}
.dot{width:8px;height:8px;border-radius:50%;background:currentColor;display:inline-block}

/* ---------- reveal on scroll ---------- */
.reveal{opacity:0;transform:translateY(18px);transition:opacity .7s var(--ease-out),transform .7s var(--ease-out)}
.reveal.in{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){.reveal{opacity:1;transform:none;transition:none}html{scroll-behavior:auto}}

/* ---------- forms ---------- */
.field{display:flex;flex-direction:column;gap:6px}
.field label{font-size:13px;font-weight:600;color:var(--text-dim)}
.input{background:var(--bg-elev);border:1px solid var(--border-strong);border-radius:12px;padding:12px 14px;min-height:48px;font-size:16px;width:100%}
.input:focus{outline:none;border-color:var(--brand)}
.seg{display:flex;gap:4px;padding:4px;border-radius:14px;background:var(--bg-elev);border:1px solid var(--border)}
.seg button{flex:1;border:0;background:transparent;border-radius:10px;padding:10px 12px;cursor:pointer;font-weight:650;color:var(--text-dim);min-height:42px}
.seg button[aria-pressed=true]{background:var(--surface-hover);color:var(--text);box-shadow:inset 0 0 0 1px var(--border-strong)}
input[type=range]{accent-color:var(--brand)}

/* ---------- toast ---------- */
.toast{position:fixed;left:50%;bottom:24px;transform:translateX(-50%) translateY(20px);opacity:0;background:var(--bg-elev-2);border:1px solid var(--border-strong);padding:12px 18px;border-radius:14px;z-index:100;transition:all .3s var(--ease-out);max-width:calc(100vw - 32px);font-weight:550;box-shadow:0 20px 60px rgba(0,0,0,.45)}
.toast.show{opacity:1;transform:translateX(-50%)}
.toast--bad{border-color:rgba(255,92,108,.5)}

/* ---------- footer ---------- */
.foot{border-top:1px solid var(--border);padding:40px 0 48px;color:var(--text-faint);font-size:14px}
.foot__in{display:flex;justify-content:space-between;gap:24px;flex-wrap:wrap}
.foot__links{display:flex;gap:18px;flex-wrap:wrap}
.foot__links a:hover{color:var(--text)}
.foot small{display:block;margin-top:14px;max-width:720px;line-height:1.5}
.foot small a{text-decoration:underline}

/* ---------- song rows (shared by home + songs page) ---------- */
.rows{display:flex;flex-direction:column;gap:8px}
.row{display:grid;grid-template-columns:44px 52px 1fr auto;align-items:center;gap:14px;padding:12px 14px;border-radius:16px;background:var(--surface);border:1px solid var(--border);transition:background .2s}
.row:hover{background:var(--surface-hover)}
.row__rank{font-family:var(--mono);font-weight:700;color:var(--text-faint);text-align:center;font-size:15px}
.row__rank.top{color:var(--brand)}
.row__play{width:44px;height:44px;border-radius:50%;border:0;cursor:pointer;display:grid;place-items:center;background:var(--brand);color:var(--brand-ink)}
.row__play svg{width:18px;height:18px}
.row__play.playing{background:var(--text)}
.row__main{min-width:0}
.row__title{font-weight:700;font-size:16px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.row__meta{display:flex;gap:6px;align-items:center;margin-top:5px;flex-wrap:wrap;color:var(--text-faint);font-size:13px}
.row__stats{display:flex;gap:14px;align-items:center;color:var(--text-dim);font-size:14px;font-family:var(--mono)}
.like{display:inline-flex;align-items:center;gap:6px;border:1px solid var(--border);background:transparent;border-radius:999px;padding:7px 12px;cursor:pointer;min-height:38px;color:var(--text-dim);font-family:var(--mono);font-size:14px}
.like svg{width:16px;height:16px}
.like[aria-pressed=true]{color:var(--metal);border-color:rgba(255,77,94,.4);background:var(--metal-soft)}
.like[aria-pressed=true] svg{fill:currentColor}
@media (max-width:600px){
  .row{grid-template-columns:30px 44px 1fr;gap:10px;padding:10px 12px}
  .row__stats{grid-column:3;justify-content:flex-start;margin-top:2px}
  .row__rank{font-size:13px}
}
.empty{padding:40px 20px;text-align:center;color:var(--text-dim);border:1px dashed var(--border-strong);border-radius:var(--radius-lg)}