/* AXTEN AUDIO Control OS 0.6.1 — premium native-style frontend.
   BLE protocol and controller behavior remain on firmware 0.6. */
:root{
 --bg:#111722;--sidebar:#17202c;--panel:#202b3a;--panel-alt:#263343;
 --line:#374457;--line-soft:#303d4e;--text:#f8f9ff;--sub:#b2bccc;
 --faint:#8290a4;--accent:#a99bff;--accent-dark:#312c54;
 --green:#8fe5c0;--red:#ff9e99;--radius:25px;
 --violet:#9287ff;--peach:#ff916e;
 color-scheme:dark;
}
html{background:var(--bg);overscroll-behavior-y:none}
body{background:radial-gradient(ellipse 55% 35% at 95% 0%,#332b5080,transparent 75%),radial-gradient(ellipse 45% 45% at 3% 60%,#22294160,transparent 72%),#111722;color:var(--text);font-family:Inter,'Segoe UI',-apple-system,BlinkMacSystemFont,Arial,sans-serif;line-height:1.4}
button{touch-action:manipulation;-webkit-tap-highlight-color:transparent}
button:focus-visible,input:focus-visible,.volume-dial:focus-visible{outline:2px solid #b9aaff;outline-offset:4px}
button:disabled,input:disabled{opacity:.48}
button:disabled:focus-visible,input:disabled:focus-visible{outline:0}
.side{background:linear-gradient(180deg,#1d2735,#161e29);border-right:1px solid #344052;padding:30px 19px 22px}
.brand-icon{border:0;background:linear-gradient(135deg,#8575e8,#dd83a1);box-shadow:0 7px 23px #8d77f349}
.brand-icon span{background:white}.brand-title{letter-spacing:.01em;font-size:18px}.brand-title span{color:#c5b8ff}
.brand-caption{color:#9da9c0}
.side-label{color:#8895a9}.nav-link{border-radius:14px;font-size:13px;min-height:51px}
.nav-link:hover{background:#ffffff0b}.nav-link.selected{background:linear-gradient(95deg,#7f73de2c,#cc8faf10);border-color:#7f77c455;color:#ded7ff}
.side-bottom{border:1px solid #47536775;background:#232e3c;border-radius:17px;padding:16px}
.side-version{color:#708096}
.content{max-width:1140px;padding:32px clamp(22px,4vw,58px) 72px}
.topbar{border:0;padding-bottom:8px}
.brand-header{display:flex;align-items:center;gap:12px}.app-symbol{display:flex;align-items:center;justify-content:center;gap:3px;width:42px;height:42px;background:linear-gradient(138deg,#9888f8,#e994a8);border-radius:14px;box-shadow:0 8px 27px #9c7ce839}
.app-symbol span{height:14px;width:3px;background:white;border-radius:4px}.app-symbol span:nth-child(2){height:23px}.app-symbol span:nth-child(3){height:20px}.app-symbol span:nth-child(4){height:9px}
.top-kicker{font-size:11px;letter-spacing:.12em;color:#e1ddf8}.top-version{color:#8d9bb1;font-weight:500}.top-section{margin-top:4px;color:#b0bad0;font-size:12px;font-weight:500}
.connection-pill{height:39px;border:1px solid #45516a;border-radius:50px;background:#242e3edb;color:#b5bdd0;font-size:11px;padding:0 13px}
.connection-pill.online{background:#21443e;border-color:#35776a;color:#a6f7d8}.connection-pill.online i{box-shadow:0 0 12px #89f9c2}
.connection-pill.reconnecting{border-color:#8d77b3;color:#d3c6ff}
.icon-button{border-radius:13px;background:#263241;border-color:#455168;color:#d7ddee}
.icon-button:hover{border-color:#9785e5;color:white}
.banner{font-size:11px;line-height:1.55;color:#c0c9da;background:#232f40;border:1px solid #3b4960;border-radius:15px;margin:16px 0 0;padding:11px 15px}
.banner.good{color:#b9f0d9;border-color:#326f63;background:#1a3536}.banner.error{color:#ffd3cf;border-color:#8a5359;background:#402b39}
.section-header{margin:30px 0 20px;align-items:center}.overline,.eyebrow{color:#b9a9ff;letter-spacing:.155em;font-size:10px}
.section-header h1{font-size:clamp(33px,4.5vw,51px);line-height:1.06;letter-spacing:-.059em;font-weight:760;margin:9px 0 9px}
.section-header h1 em{color:#b1a2ff;font-style:normal}.lede{font-size:12.5px;color:#aebacc;line-height:1.52}
.sparkle{display:inline-block;color:#ffae91;margin-right:4px;font-size:12px}.premium-intro{position:relative;isolation:isolate}
.intro-orbit{position:relative;width:80px;height:80px;flex:none;opacity:.75;background:radial-gradient(circle at center,#aa95ff40 0 8%,transparent 9%);border:1px solid #a79fff32;border-radius:50%;box-shadow:0 0 40px #c8a9ff24;transform:rotate(-23deg)}
.intro-orbit:before,.intro-orbit:after{content:'';position:absolute;inset:12px;border:1px dashed #ffac9c70;border-radius:50%}.intro-orbit:after{inset:23px;border-color:#aea3ff99}
.intro-orbit i{position:absolute;width:8px;height:8px;border-radius:50%;background:#c6adff;box-shadow:0 0 16px #c6adff;top:8px;left:8px}.intro-orbit i:nth-child(2){background:#ffac94;bottom:10px;top:auto;left:auto;right:4px}.intro-orbit i:nth-child(3){width:4px;height:4px;top:37px;left:38px}
.hero-grid{display:grid;grid-template-columns:.85fr 1.15fr;gap:18px;align-items:stretch}
.card,.product-card{border:1px solid #40506a70;background:linear-gradient(146deg,#283443,#1d2837);border-radius:26px;box-shadow:0 18px 40px #06090f24,inset 0 1px 0 #ffffff08}
.card{padding:25px;margin-bottom:17px}.product-card{min-height:355px;background:radial-gradient(ellipse 80% 70% at 55% 55%,#52466962 0%,#2a3445 61%,#202a38 100%);overflow:hidden}
.product-card:before{content:'';position:absolute;inset:-40% -20% auto auto;width:270px;height:270px;background:radial-gradient(circle,#aa8bff2c,transparent 65%);pointer-events:none}
.product-eyebrow{font-size:10px;letter-spacing:.12em;color:#e8e4ff}.product-eyebrow span{color:#a7a0f1}.revision{color:#a3afc2}
.product-bottom strong{font-size:17px;letter-spacing:-.025em}.product-bottom small{font-size:10px;color:#9dabc1}
.product-tag{color:#b9acfc;border-color:#7571b6;background:#7465a015}
.hardware-art{padding:3px}.cabinet{background:linear-gradient(140deg,#343f51,#121923 42%,#242f40);border:1px solid #536078;box-shadow:inset 2px 2px 3px #8490a025,16px 17px 40px #0a0b1277;transform:rotate(-7deg);width:149px;height:202px}
.driver{border-color:#59667d;background:#141c28}.cone{background:radial-gradient(circle,#506077,#192431 60%,#19202b)}.dust{background:radial-gradient(circle,#1e2835,#0c121b)}.cabinet-led.online{background:#8dedc4;box-shadow:0 0 10px #8dedc4}
/* New real radial volume controller */
.main-volume{display:flex;flex-direction:column;align-items:center;min-height:355px;padding:23px 27px 18px;position:relative;isolation:isolate;overflow:hidden}
.main-volume:before{content:'';position:absolute;inset:-30% 3% 25%;background:radial-gradient(ellipse,#8076d524,transparent 64%);pointer-events:none;z-index:-1}
.main-volume .card-label-row{align-self:stretch;width:100%;display:flex;justify-content:space-between;align-items:flex-start;gap:12px}
.main-volume .eyebrow{font-size:10px;color:#aca6e8}.volume-title{font-size:18px;line-height:1.2;font-weight:700;margin:6px 0 0;color:#f6f6fd;letter-spacing:-.04em}
.tiny-state{border-radius:100px;border:1px solid #7164a3;background:#51416d3d;color:#c2b4ff;padding:6px 10px;font-size:9px;letter-spacing:.09em}
.volume-dial{position:relative;width:min(290px,100%);max-width:290px;aspect-ratio:1;flex:none;margin:0 auto;outline-offset:-12px;touch-action:none;cursor:grab;user-select:none}
.volume-dial:active{cursor:grabbing}.volume-dial.locked{cursor:default}.volume-dial .dial-art{display:block;width:100%;height:100%;overflow:visible;stroke:none;fill:none}
.dial-art circle{transform-origin:150px 150px;transform:rotate(135deg);fill:none}
.dial-art .dial-ghost{stroke:#455066;stroke-width:10;stroke-dasharray:551 735;stroke-linecap:round;opacity:.6}
.dial-art .dial-progress-glow,.dial-art .dial-progress{stroke:url(#dialGrad);stroke-width:11;stroke-linecap:round;stroke-dasharray:var(--dash,193) 735;transition:stroke-dasharray .18s ease-out}
.dial-art .dial-progress-glow{stroke-width:16;filter:url(#dialBlur);opacity:.57}.dial-art .dial-inner{stroke:#ffffff0c;stroke-width:1;transform:none}
.dial-core{position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center;pointer-events:none;padding-top:18px}
.dial-core .dial-eyebrow{color:#9ba9bf;font-size:9px;font-weight:750;letter-spacing:.17em}
.volume-readout{display:flex;justify-content:center;align-items:baseline;margin:5px 0 0;font-variant-numeric:tabular-nums}
.volume-readout>span:first-child{font-weight:670;font-size:79px;letter-spacing:-.09em;line-height:1.1;color:#fcfcff}
.volume-unit{font-size:22px;color:#bbadff;margin-left:7px;letter-spacing:0;font-weight:650}
.dial-message{color:#8595ae;letter-spacing:.15em;font-size:9px;margin-top:3px}
.mute-button{pointer-events:auto;position:relative;width:auto;max-width:170px;height:39px;min-height:39px;margin-top:19px;padding:0 15px;display:flex;align-items:center;justify-content:center;gap:8px;background:#445076;border:1px solid #6f6da6;border-radius:30px;color:#f2ecff;font-size:11px;font-weight:700}
.mute-button:hover{background:#615e96}.mute-button svg{width:17px;height:17px}.mute-button.muted{border-color:#ff9e888c;background:#6b404a;color:#ffe8dd}
.master-bottom{width:100%;max-width:400px;margin-top:-10px}.master-bottom .slider-heading{font-size:11px;color:#b6c1d3;margin-bottom:11px}.master-bottom .slider-heading>span{color:#8290a5;font-size:10px}
.range{accent-color:#a99bff}.master-range{margin:0;height:14px}.volume-footer{width:100%;margin-top:14px;padding-top:13px;border-top:1px solid #ffffff14;color:#91a0b5;font-size:10px;display:flex;justify-content:space-between;gap:9px}.volume-footer span:last-child{color:#cbb8ff}
/* Quick links and pairing */
.quick-links{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin:15px 0 16px}
.quick-chip{display:flex;align-items:center;gap:11px;background:#202c3b;border:1px solid #405069;min-height:56px;border-radius:17px;padding:11px 16px;color:#e6e8fa;font-size:12px;font-weight:700;text-align:left}
.quick-chip svg{color:#c5a9ff;width:20px;height:20px}.quick-chip b{margin-left:auto;font-size:17px;font-weight:500;color:#a3b0ca}.quick-chip:active{background:#3b3955}
.connection-card{margin-top:0}.connection-icon{background:#544f8575;border:1px solid #877bd16b;color:#c8baff;border-radius:15px}.connection-copy h2{font-size:15px}.connection-copy p{color:#a7b3c7}
.action.primary{background:linear-gradient(110deg,#b19cfa,#8586f9);color:#171b32;border-color:#aea0ff;font-weight:790;box-shadow:0 6px 20px #7369d52f}
.action.ghost{background:#283647;border-color:#465571;color:#dce2f4}.action.ghost:hover{border-color:#aba5ef}.action.danger{background:#49313e;color:#ffb5b0;border-color:#a1626c}
.status-rail{border-top:1px solid #ffffff14}.status-rail strong{color:#e6e9f6}.stat-dot.online{background:#8cecc0}
.unlock-card{margin-top:17px;background:linear-gradient(130deg,#2d3148,#222d3d);border-color:#7468985e}
.unlock-form input{background:#161e2c;border-color:#4b5871;color:#f2eeff}.unlock-form input:focus{border-color:#b19afc}
.checkline{color:#b4bed0}.notice-text{color:#9ba9bd;font-size:11px}.helper{color:#9facbd}.min-icon{background:#3c3b58;border-color:#625b91;color:#cab7ff}.card-title h2{color:#f7f7ff;font-weight:730}
/* Mode, channels and vertical equalizer */
.phase-stamp,.outlined-token{border-color:#68648d;color:#c9b6ff;background:#3f3b6238;border-radius:100px}
.double-slider{grid-template-columns:1fr 1fr;gap:21px}.slider-heading label{color:#f3f5ff}
.slider-heading output{color:#c3b1ff;font-size:12px;font-variant-numeric:tabular-nums}
.segment{background:#161f2bd0;padding:5px;border-radius:18px;gap:5px}.segment button{padding:17px 19px;background:transparent;border:1px solid transparent;border-radius:14px;color:#a7b0c5;font-size:13px}
.segment button small{color:#8d9cb2}.segment button.active{background:linear-gradient(135deg,#756fb7,#4b527f);border-color:#9e95e88a;color:white;box-shadow:0 7px 18px #0e142955}.segment button.active small{color:#e4ddff}
.eq-card{background:radial-gradient(ellipse 60% 30% at 50% 35%,#53436f48,transparent 80%),linear-gradient(150deg,#263243,#1b2533)}
.eq-bands{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px;margin:20px 0 16px;background:#141d2b91;border:1px solid #35445a;border-radius:21px;padding:19px 13px 14px}
.eq-strip{min-width:0;display:flex;flex-direction:column;align-items:center;gap:7px;padding:5px 3px 7px}
.eq-strip>output{font-variant-numeric:tabular-nums;font-size:14px;color:#d2b6ff;font-weight:740;min-height:22px}
.eq-strip label{display:block;text-align:center;color:#f3efff;font-size:12px;font-weight:760}.eq-strip label small{display:block;color:#8b9bb2;font-size:10px;font-weight:500;margin-top:3px}
.eq-slide-track{height:184px;width:38px;display:flex;align-items:center;justify-content:center;position:relative;margin:0 auto 8px}
.eq-slide-track:before{content:'';position:absolute;width:12px;height:162px;border-radius:16px;background:linear-gradient(0deg,#7061b855,#29374e);border:1px solid #6d6c9677;box-shadow:inset 0 4px 9px #060a153e;pointer-events:none}
.eq-vertical{appearance:none;-webkit-appearance:none;writing-mode:vertical-lr;direction:rtl;touch-action:none;display:block;width:24px!important;height:160px!important;min-height:160px;margin:0!important;padding:0!important;border:0!important;box-shadow:none!important;background:transparent!important;position:relative;z-index:1;cursor:pointer}
.eq-vertical::-webkit-slider-runnable-track{background:transparent;border:0;width:12px;border-radius:12px}
.eq-vertical::-webkit-slider-thumb{appearance:none;-webkit-appearance:none;background:linear-gradient(135deg,#ffe1be,#ef8f93 60%,#a58ef8);border:2px solid #e6c9ff;width:26px;height:15px;border-radius:7px;box-shadow:0 3px 15px #e880ae6a;cursor:pointer}
.eq-vertical::-moz-range-track{background:transparent}.eq-vertical::-moz-range-thumb{background:#dcb0ee;border:2px solid #e4bcff;width:24px;height:15px;border-radius:7px}
.eq-strip.mid-strip .eq-vertical::-webkit-slider-thumb{background:linear-gradient(135deg,#b6b1ff,#a27bf1)}
.eq-strip.treble-strip .eq-vertical::-webkit-slider-thumb{background:linear-gradient(135deg,#f3ad96,#fc8b72)}
.rule{background:#ffffff14}.presets{grid-template-columns:repeat(5,minmax(0,1fr));gap:7px}.presets button{background:#2d3a4b;color:#b7c1d0;border-color:#46546a;border-radius:12px;min-height:41px}.presets button.active{background:linear-gradient(125deg,#6a65af,#4a4c7b);border-color:#a79def;color:#f3eaff}
.health{background:#1b2737;border-color:#415069;border-radius:15px;padding:16px}.health span{color:#9aabc2}.health strong{color:#f5f6ff}
.diagnostics{background:#1b2635}.diagnostics pre{background:#111a26;border-color:#40506a;color:#c0cada}
.footnote{color:#91a1b6}.toast{background:#30384f;border:1px solid #7972bd;border-radius:17px;box-shadow:0 15px 46px #070c19a0;color:white}
/* Responsive desktop/tablet */
@media(max-width:1090px){.hero-grid{grid-template-columns:1fr 1.1fr}.content{padding:25px 22px 60px}.main-volume{min-height:355px}}
@media(max-width:760px){
 body{background:radial-gradient(ellipse 100% 36% at 50% 0%,#28263c,#131a25 77%),#121925}
 .app-layout{display:block}.side{display:none}
 .content{max-width:510px;padding:0 18px calc(113px + env(safe-area-inset-bottom))}
 .topbar{padding:calc(17px + env(safe-area-inset-top)) 0 6px}
 .app-symbol{width:39px;height:39px;border-radius:13px}.top-kicker{font-size:11px}.top-section{font-size:11px}
 .top-actions{gap:9px}.connection-pill{height:33px;font-size:10px;padding:0 11px}.icon-button{width:35px;height:35px}
 .banner{margin:12px 0 0;border-radius:12px;font-size:10px;padding:10px 13px}
 .section-header{margin:25px 0 17px;align-items:center}.section-header h1{font-size:37px;line-height:1.07;margin:8px 0 8px}.lede{font-size:11px}
 .intro-orbit{width:51px;height:51px;margin-right:4px}.intro-orbit:before{inset:7px}.intro-orbit:after{inset:15px}.intro-orbit i:nth-child(3){top:23px;left:23px}
 .hero-grid{display:flex;flex-direction:column;gap:12px}
 .main-volume{order:0;min-height:unset;padding:20px 19px 17px;border-radius:26px}
 .main-volume .card-label-row{padding:0 4px}.volume-title{font-size:18px}
 .volume-dial{width: min(285px,88vw);max-width:285px;margin-top:-3px;margin-bottom:-4px}
 .master-bottom{margin-top:-4px;padding:0 10px}.volume-footer{margin:12px 0 0;padding-top:12px}
 .product-card{order:1;min-height:170px;padding:16px;border-radius:23px}
 .product-top{position:relative;z-index:2}.product-bottom{z-index:1}.product-bottom strong{font-size:14px}.product-bottom small{font-size:10px}
 .hardware-art{position:absolute;right:12px;top:5px;bottom:4px;width:123px;opacity:.9;pointer-events:none}
 .cabinet{width:86px;height:137px;border-radius:15px;transform:rotate(-10deg)}.driver{width:47px;height:47px}.cone{width:32px;height:32px}.dust{width:12px;height:12px}
 .product-tag{display:none}.revision{font-size:9px}
 .quick-links{gap:10px;margin:13px 0}.quick-chip{font-size:11px;min-height:51px;padding:10px 12px;border-radius:16px;gap:8px}.quick-chip svg{width:17px;height:17px}
 .card{padding:19px;border-radius:22px;margin-bottom:13px}.connection-card{margin-top:0}
 .connection-main{gap:10px}.connection-icon{height:43px;width:43px;flex-basis:43px}.connection-copy h2{font-size:13px}.connection-copy p{font-size:10px}
 .status-rail{margin-top:16px;padding-top:14px;justify-content:space-between;gap:10px}.status-rail>span{font-size:9px}
 .unlock-card{margin-top:13px}.unlock-form{margin-top:17px}.unlock-form input{font-size:14px}
 .double-slider{grid-template-columns:1fr 1fr;gap:16px}.presets{grid-template-columns:repeat(3,1fr);gap:8px}
 .eq-bands{gap:3px;padding:15px 6px}.eq-strip label{font-size:11px}
 .phase-stamp{display:none}.health-grid{grid-template-columns:1fr 1fr}
 .bottom-nav{display:flex;position:fixed;bottom:0;left:0;right:0;z-index:12;padding:9px 20px calc(11px + env(safe-area-inset-bottom));height:calc(75px + env(safe-area-inset-bottom));background:#192332f5;border-top:1px solid #53607962;backdrop-filter:blur(22px);-webkit-backdrop-filter:blur(22px);gap:12px;justify-content:space-between;box-shadow:0 -8px 25px #07101b22}
 .bottom-nav button{flex:1;max-width:none;display:flex;flex-direction:row;justify-content:center;align-items:center;gap:7px;padding:6px 10px;background:transparent;border:1px solid transparent;border-radius:15px;color:#8190a6;font-size:11px;font-weight:740}
 .bottom-nav button.selected{color:#eae6ff;background:linear-gradient(135deg,#726bb16b,#6658a032);border-color:#8d86c86e;box-shadow:inset 0 1px 0 #ffffff1c}
 .bottom-nav button svg{width:19px;height:19px}.bottom-nav button span{white-space:nowrap}
 .toast{bottom:calc(90px + env(safe-area-inset-bottom))}
}
@media(max-width:370px){.content{padding-left:13px;padding-right:13px}.section-header h1{font-size:33px}.volume-dial{width:min(250px,85vw)}.volume-readout>span:first-child{font-size:72px}.product-card{min-height:160px}.hero-grid{display:flex;flex-direction:column}.bottom-nav{gap:5px;padding-left:9px;padding-right:9px}.bottom-nav button{font-size:10px}}
@media(min-width:761px) and (max-width:860px){.app-layout{grid-template-columns:195px minmax(0,1fr)}.side{padding:25px 10px}.branding{padding:5px 8px 27px}.hero-grid{grid-template-columns:1fr}.main-volume{order:0}.product-card{order:1}}
@media(prefers-reduced-motion:reduce){.dial-art .dial-progress,.dial-art .dial-progress-glow{transition:none}}