/* KM Signal Stop shared live-site shell — responsive navigation and device-safe layout */
:root{
  --km-bg:#06101c;
  --km-panel:#0d1b2c;
  --km-panel-2:#12243a;
  --km-text:#eef7ff;
  --km-muted:#9db2c9;
  --km-line:rgba(255,255,255,.11);
  --km-accent:#38bdf8;
  --km-accent-2:#22d3ee;
  --km-shadow:0 18px 55px rgba(0,0,0,.30);
  --km-radius:18px;
  --km-max:1480px;
}
html{scroll-padding-top:88px;overflow-x:hidden}
body{overflow-x:hidden;-webkit-text-size-adjust:100%;text-size-adjust:100%}
img,picture,video,svg,canvas{max-width:100%}
iframe{max-width:100%}
[hidden]{display:none!important}

/* Retire old page-specific nav bars after the shared shell loads. */
body.km-shell-ready .site-header:not(.km-global-header),
body.km-shell-ready .toolnav,
body.km-shell-ready .topbar:not(.km-global-header){display:none!important}

.km-global-header{
  position:sticky;top:0;z-index:10000;width:100%;
  color:var(--km-text);
  background:rgba(6,16,28,.93);
  border-bottom:1px solid var(--km-line);
  box-shadow:0 8px 30px rgba(0,0,0,.14);
  backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);
}
.km-nav{
  width:min(var(--km-max),calc(100% - 28px));margin:0 auto;min-height:72px;
  display:grid;grid-template-columns:auto minmax(0,1fr) auto;align-items:center;gap:16px;
}
.km-brand{display:flex;align-items:center;gap:11px;min-width:0;color:var(--km-text)!important;text-decoration:none!important}
.km-brand-icon{width:44px;height:44px;flex:0 0 44px;border-radius:14px;display:block;box-shadow:0 10px 28px rgba(56,189,248,.20)}
.km-brand-copy{min-width:0;line-height:1.08}
.km-brand-copy strong{display:block;font-size:.98rem;letter-spacing:.01em;color:var(--km-text);white-space:nowrap}
.km-brand-copy small{display:block;margin-top:4px;max-width:260px;color:var(--km-muted);font-size:.74rem;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.km-nav-links{display:flex;justify-content:center;align-items:center;gap:3px;min-width:0}
.km-nav-links a,.km-menu-panel a{
  color:var(--km-muted)!important;text-decoration:none!important;font-weight:760;font-size:.88rem;
}
.km-nav-links a{padding:9px 10px;border-radius:999px;white-space:nowrap}
.km-nav-links a:hover,.km-nav-links a:focus-visible{background:rgba(255,255,255,.07);color:var(--km-text)!important}
.km-nav-actions{display:flex;align-items:center;justify-content:flex-end;gap:8px}
.km-home,.km-buy,.km-menu-button,.km-theme-button{
  width:auto!important;min-width:0!important;min-height:42px!important;margin:0!important;padding:9px 13px!important;
  border-radius:999px!important;border:1px solid var(--km-line)!important;font:800 .88rem/1.1 Inter,ui-sans-serif,system-ui,-apple-system,"Segoe UI",sans-serif!important;
  cursor:pointer;text-decoration:none!important;display:inline-flex!important;align-items:center;justify-content:center;gap:7px;white-space:nowrap;
  box-shadow:none!important;transform:none!important;
}
.km-home,.km-menu-button,.km-theme-button{background:rgba(255,255,255,.055)!important;color:var(--km-text)!important}
.km-buy{background:linear-gradient(135deg,var(--km-accent),#2563eb)!important;color:white!important;border-color:transparent!important}
.km-menu-button{display:none!important}
.km-menu-panel{
  display:none;position:absolute;top:calc(100% + 8px);left:14px;right:14px;padding:12px;
  border:1px solid var(--km-line);border-radius:18px;background:#0b1929;box-shadow:var(--km-shadow);
  grid-template-columns:repeat(2,minmax(0,1fr));gap:8px;
}
.km-menu-panel a{display:flex;align-items:center;min-height:46px;padding:11px 12px;border-radius:12px;background:rgba(255,255,255,.045)}
.km-menu-panel a:hover,.km-menu-panel a:focus-visible{background:rgba(56,189,248,.12);color:var(--km-text)!important}
.km-global-header.km-menu-open .km-menu-panel{display:grid}
.km-audio-status{width:auto!important;max-width:140px;overflow:hidden;text-overflow:ellipsis}

/* Accessibility and touch */
a,button,input,select,textarea,summary{-webkit-tap-highlight-color:transparent}
a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible,summary:focus-visible{outline:3px solid rgba(56,189,248,.45)!important;outline-offset:2px}
button,input,select,textarea{max-width:100%}
input[type="range"]{min-height:32px}
input[type="checkbox"],input[type="radio"]{min-width:20px;min-height:20px}
pre,code{max-width:100%;overflow-wrap:anywhere}
pre{overflow:auto}

/* Generic live-site responsive safety layer. It intentionally does not rename or remove tool IDs. */
main,.wrap,.container{max-width:100%}
.card,.viz-card,.info-card,.feature-card{min-width:0}
.table-wrap,.table-scroll,.responsive-table{max-width:100%;overflow-x:auto;-webkit-overflow-scrolling:touch}
table{max-width:100%}
canvas{height:auto}

/* Home quick access */
.km-quick-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px;margin-top:4px}
.km-quick-card{display:flex;flex-direction:column;gap:8px;min-height:150px;padding:18px;border:1px solid var(--line,var(--km-line));border-radius:18px;background:linear-gradient(180deg,var(--panel,#0d1b2c),var(--panel-2,#12243a));text-decoration:none!important;color:inherit!important;box-shadow:0 12px 34px rgba(0,0,0,.16)}
.km-quick-card:hover{border-color:rgba(56,189,248,.42);transform:translateY(-2px)}
.km-quick-card span{font-size:.73rem;letter-spacing:.12em;text-transform:uppercase;font-weight:850;color:var(--accent-2,var(--km-accent-2))}
.km-quick-card strong{font-size:1.08rem}
.km-quick-card p{margin:0;color:var(--muted,var(--km-muted));font-size:.9rem;line-height:1.45}

/* Buy-device page */
.km-shop-page{width:min(1180px,calc(100% - 28px));margin:0 auto;padding:52px 0 64px}
.km-shop-hero{display:grid;grid-template-columns:minmax(0,1.15fr) minmax(280px,.85fr);gap:20px;align-items:stretch;margin-bottom:22px}
.km-shop-panel{padding:24px;border:1px solid var(--km-line);border-radius:22px;background:linear-gradient(155deg,#0d1e31,#091522);box-shadow:var(--km-shadow)}
.km-shop-eyebrow{display:inline-flex;margin-bottom:10px;color:var(--km-accent-2);font-size:.76rem;font-weight:850;letter-spacing:.14em;text-transform:uppercase}
.km-shop-page h1{margin:0 0 14px;font-size:clamp(2.2rem,6vw,4.7rem);line-height:1.01;letter-spacing:-.055em;color:var(--km-text)}
.km-shop-page h2,.km-shop-page h3{color:var(--km-text)}
.km-shop-lead{max-width:760px;margin:0;color:var(--km-muted);font-size:clamp(1rem,2vw,1.18rem);line-height:1.6}
.km-shop-note{display:grid;gap:9px;align-content:center}
.km-shop-note div{padding:12px 13px;border:1px solid var(--km-line);border-radius:14px;background:rgba(255,255,255,.035);color:var(--km-muted)}
.km-products{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px;margin:22px 0}
.km-product{display:flex;flex-direction:column;overflow:hidden;border:1px solid var(--km-line);border-radius:22px;background:linear-gradient(180deg,#0d1c2d,#091522);box-shadow:var(--km-shadow)}
.km-device-visual{min-height:210px;padding:24px;display:grid;place-items:center;background:radial-gradient(circle at 50% 45%,rgba(56,189,248,.20),transparent 44%),linear-gradient(180deg,#0a1928,#07111d)}
.km-screen{width:min(92%,430px);aspect-ratio:16/9;border:8px solid #172235;border-radius:16px;padding:16px;display:flex;align-items:flex-end;background:linear-gradient(135deg,#071321,#102943);box-shadow:0 20px 45px rgba(0,0,0,.4)}
.km-screen.cyd{width:min(72%,260px);aspect-ratio:4/3;border-radius:13px}
.km-screen span{display:block;width:100%;height:18%;border-radius:8px;background:linear-gradient(90deg,#22d3ee,#2563eb)}
.km-product-body{display:flex;flex-direction:column;gap:12px;flex:1;padding:22px}
.km-product-body p{margin:0;color:var(--km-muted)}
.km-specs{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:8px}
.km-specs div{padding:10px;border:1px solid var(--km-line);border-radius:12px;background:rgba(255,255,255,.035);color:var(--km-muted);font-size:.88rem}
.km-product-actions{display:flex;gap:10px;flex-wrap:wrap;margin-top:auto;padding-top:6px}
.km-product-actions a,.km-product-actions button{width:auto!important;flex:1 1 180px;min-height:46px;border-radius:999px!important;padding:12px 15px!important;font-weight:850!important;text-decoration:none!important;text-align:center}
.km-order-box{margin-top:24px;padding:22px;border:1px solid var(--km-line);border-radius:22px;background:linear-gradient(180deg,#0d1c2d,#091522)}
.km-order-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:13px}
.km-order-box label{display:block;margin-bottom:6px;color:var(--km-muted);font-weight:750}
.km-order-box input,.km-order-box select,.km-order-box textarea{width:100%;min-height:46px;padding:12px 13px;border:1px solid var(--km-line);border-radius:13px;background:rgba(255,255,255,.045);color:var(--km-text);font:inherit}
.km-order-box textarea{min-height:110px;resize:vertical}
.km-order-actions{display:flex;gap:10px;flex-wrap:wrap;margin-top:14px}
.km-order-actions button{width:auto!important;min-height:46px;padding:12px 16px!important;border-radius:999px!important}
.km-order-summary{margin-top:14px;padding:14px;border:1px solid var(--km-line);border-radius:14px;background:rgba(0,0,0,.16);color:var(--km-muted);white-space:pre-wrap}
.km-shop-small{font-size:.82rem;color:var(--km-muted);line-height:1.5}

@media(max-width:1220px){
  .km-nav{grid-template-columns:minmax(0,1fr) auto;position:relative}
  .km-nav-links{display:none}
  .km-menu-button{display:inline-flex!important}
  .km-nav-actions .km-home{display:none!important}
  .km-menu-panel{grid-template-columns:repeat(3,minmax(0,1fr))}
  .km-quick-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media(max-width:820px){
  html{scroll-padding-top:76px}
  .km-nav{width:calc(100% - 20px);min-height:64px;gap:9px}
  .km-brand-icon{width:40px;height:40px;flex-basis:40px;border-radius:12px}
  .km-brand-copy strong{font-size:.9rem}.km-brand-copy small{max-width:38vw;font-size:.7rem}
  .km-buy{display:none!important}
  .km-menu-panel{left:10px;right:10px;grid-template-columns:repeat(2,minmax(0,1fr));max-height:calc(100vh - 86px);overflow:auto}
  .km-shop-page{width:calc(100% - 20px);padding:32px 0 50px}
  .km-shop-hero,.km-products,.km-order-grid{grid-template-columns:1fr}
  .km-shop-panel,.km-product-body,.km-order-box{padding:17px}
  .km-device-visual{min-height:170px;padding:17px}
  .km-specs{grid-template-columns:1fr}
  .km-quick-grid{grid-template-columns:1fr}

  /* Most existing tool grids collapse safely on phones. */
  .grid,.grid2,.grid3,.grid4,.grid-2,.grid-3,.two-col,.generator-layout,.split-editor,.hero-grid,.content-grid,.evidence,.source-grid,.footer-grid{grid-template-columns:1fr!important}
  .steps{grid-template-columns:repeat(2,minmax(0,1fr))!important}
  .range-row{grid-template-columns:1fr!important;gap:5px!important}
  .actions,.btnrow,.tone-actions,.hero-actions,.top-actions{align-items:stretch!important}
  .actions>button,.actions>a,.btnrow>button,.tone-actions>button,.tone-actions>a,.hero-actions>a{min-height:46px}
  input,select,textarea{font-size:16px!important}
  table{font-size:12px}
  th,td{white-space:nowrap}
  .card,.viz-card{padding:15px!important}
}
@media(max-width:520px){
  .km-brand-copy small{display:none}
  .km-menu-panel{grid-template-columns:1fr}
  .km-home,.km-menu-button,.km-theme-button{padding:9px 11px!important}
  .km-shop-page h1{font-size:2.35rem}
  .km-screen{border-width:6px;padding:10px}
  .km-order-actions button{width:100%!important}
}
@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important;animation:none!important}}

/* Featured audio entry point on the home page */
.km-audio-quick-card{grid-column:span 2;min-height:170px;border-color:rgba(34,211,238,.28);background:radial-gradient(circle at 88% 18%,rgba(34,211,238,.16),transparent 28%),linear-gradient(145deg,#102a3d,#0b1828)}
.km-audio-quick-card strong{font-size:1.22rem}.km-audio-quick-card:after{content:"Open audio studio →";margin-top:auto;color:var(--accent-2,var(--km-accent-2));font-size:.84rem;font-weight:850}
.km-audio-tool-card{border-color:rgba(34,211,238,.30)!important;background:radial-gradient(circle at 90% 15%,rgba(34,211,238,.12),transparent 28%),linear-gradient(180deg,var(--panel,#0d1b2c),var(--panel-2,#12243a))!important}
@media(max-width:1220px){.km-audio-quick-card{grid-column:span 2}}
@media(max-width:820px){.km-audio-quick-card{grid-column:auto}}