/* BYO Audio — Design System v4.0 (Compact, optimized) */
:root{--bg:#09090b;--bg2:#12141c;--bg3:#1a1d28;--bgs:rgba(26,29,40,.82);--bgh:rgba(255,255,255,.04);--bga:rgba(255,255,255,.06);--l1:rgba(255,255,255,.06);--l2:rgba(255,255,255,.1);--l3:rgba(255,255,255,.16);--t1:#fafafa;--t2:#a1a1aa;--t3:#71717a;--ac:#6366f1;--ach:#818cf8;--acs:rgba(99,102,241,.12);--acg:rgba(99,102,241,.28);--a2:#0ea5e9;--ok:#10b981;--oks:rgba(16,185,129,.12);--warn:#f59e0b;--warns:rgba(245,158,11,.12);--err:#ef4444;--errs:rgba(239,68,68,.12);--gr:linear-gradient(135deg,#6366f1,#0ea5e9);--r:12px;--rl:16px;--rxl:24px;--sh:0 4px 16px rgba(0,0,0,.32);--shl:0 12px 40px rgba(0,0,0,.48);--ft:font-family,-apple-system,BlinkMacSystemFont,'Segoe UI',system-ui,sans-serif;--fm:'JetBrains Mono',monospace;--tf:.15s cubic-bezier(.4,0,.2,1);--t:.25s cubic-bezier(.4,0,.2,1);--sb:env(safe-area-inset-bottom,0px);--st:env(safe-area-inset-top,0px);--hh:52px;--nh:52px;--bh:56px}
[data-theme=light]{--bg:#fafafa;--bg2:#fff;--bg3:#f4f4f5;--bgs:rgba(255,255,255,.9);--bgh:rgba(0,0,0,.04);--bga:rgba(0,0,0,.06);--l1:rgba(0,0,0,.06);--l2:rgba(0,0,0,.1);--l3:rgba(0,0,0,.15);--t1:#18181b;--t2:#52525b;--t3:#a1a1aa;--sh:0 4px 16px rgba(0,0,0,.08);--shl:0 12px 40px rgba(0,0,0,.12)}
[hidden]{display:none!important}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-tap-highlight-color:transparent}
body{font:14px/1.6 var(--ft);background:var(--bg);color:var(--t1);min-height:100dvh;overflow-x:hidden;overscroll-behavior-y:none}
a{color:var(--ac);text-decoration:none}a:hover{color:var(--ach)}
img,svg{display:block;max-width:100%}
button,input,select{font:inherit;color:inherit}
:focus-visible{outline:2px solid var(--ac);outline-offset:2px}
.sr{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);border:0}
.skip-link{position:fixed;top:8px;left:8px;z-index:9999;padding:10px 18px;border-radius:var(--r);background:var(--ac);color:#fff;font-weight:600;transform:translateY(-150%);transition:transform .2s}
.skip-link:focus{transform:translateY(0)}

/* Loading */
.loading{position:fixed;inset:0;z-index:9998;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;background:var(--bg);transition:opacity .4s,visibility .4s}
.loading.hide{opacity:0;visibility:hidden;pointer-events:none}
.loading span{font-size:15px;font-weight:600;color:var(--t2);letter-spacing:.04em}
.spin{animation:spin 1.2s linear infinite;transform-origin:center}
@keyframes spin{to{transform:rotate(360deg)}}

/* Screen (setup/login) */
.screen{position:fixed;inset:0;z-index:9997;display:flex;align-items:center;justify-content:center;background:var(--bg);padding:24px}
.setup-card{max-width:360px;width:100%;display:flex;flex-direction:column;align-items:center;gap:16px;text-align:center;padding:40px 32px;border-radius:var(--rxl);background:var(--bg2);border:1px solid var(--l1)}
.setup-card h2{font-size:22px;font-weight:700}
.setup-card p{font-size:14px;color:var(--t2);line-height:1.5}
.pin-form{display:flex;flex-direction:column;gap:12px;width:100%}
.pin-form input{text-align:center;font-size:20px;letter-spacing:.3em;padding:14px}

/* Toasts */
.toasts{position:fixed;bottom:calc(16px + var(--sb) + var(--bh));right:12px;z-index:100;display:flex;flex-direction:column;gap:6px;max-width:min(360px,calc(100vw - 24px))}
.toast{display:flex;align-items:center;gap:10px;padding:12px 14px;border-radius:var(--rl);background:var(--bg3);border:1px solid var(--l3);box-shadow:var(--shl);animation:tIn .25s ease;font-size:13px}
.toast.err{border-color:rgba(239,68,68,.3)}
@keyframes tIn{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}

/* App Shell */
.app{display:flex;flex-direction:column;min-height:100dvh}
.hdr{position:sticky;top:0;z-index:40;background:rgba(9,9,11,.85);backdrop-filter:blur(20px) saturate(180%);border-bottom:1px solid var(--l1);padding-top:var(--st)}
[data-theme=light] .hdr{background:rgba(250,250,250,.85)}
.hdr-inner{display:flex;align-items:center;justify-content:space-between;height:var(--hh);padding:0 12px;max-width:1200px;margin:0 auto}
.logo{display:flex;align-items:center;gap:8px;font-size:16px;font-weight:700;letter-spacing:-.02em}
.hdr-actions{display:flex;align-items:center;gap:4px}
.net-dot{display:flex;align-items:center;gap:6px;padding:4px 10px;border-radius:999px;background:var(--bgh);border:1px solid var(--l1);font-size:11px;color:var(--t2)}
.dot{width:7px;height:7px;border-radius:50%;background:var(--t3);transition:background var(--t)}
.dot.on{background:var(--ok);box-shadow:0 0 5px var(--ok)}
@media(max-width:640px){.net-lbl{display:none}.net-dot{padding:4px}}

/* Buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;padding:9px 16px;border-radius:var(--r);border:none;font-weight:500;font-size:13px;cursor:pointer;transition:all var(--tf);white-space:nowrap;-webkit-tap-highlight-color:transparent}
.btn:active{transform:scale(.97)}
.btn:disabled{opacity:.4;pointer-events:none}
.btn-primary{background:var(--gr);color:#fff;box-shadow:0 3px 12px rgba(99,102,241,.25)}
.btn-primary:hover{box-shadow:0 4px 16px rgba(99,102,241,.35)}
.btn-outline{background:transparent;border:1px solid var(--l3);color:var(--t1)}
.btn-outline:hover{background:var(--bgh)}
.btn-sm{padding:6px 12px;font-size:12px;border-radius:8px}
.btn-full{width:100%}
.btn-ic{width:36px;height:36px;border-radius:50%;background:transparent;border:none;cursor:pointer;color:var(--t2);display:flex;align-items:center;justify-content:center;transition:all var(--tf)}
.btn-ic:hover{background:var(--bgh);color:var(--t1)}
.btn-ic.sm{width:32px;height:32px}
.btn-play{width:36px;height:36px;border-radius:50%;background:var(--gr);border:none;cursor:pointer;display:flex;align-items:center;justify-content:center;color:#fff;transition:all var(--tf)}
.btn-play:hover{transform:scale(1.06)}
.btn-play-lg{width:52px;height:52px;border-radius:50%;background:var(--gr);border:none;cursor:pointer;display:flex;align-items:center;justify-content:center;color:#fff;box-shadow:0 4px 20px rgba(99,102,241,.3);transition:all var(--tf)}
.btn-play-lg:hover{transform:scale(1.05);box-shadow:0 6px 24px rgba(99,102,241,.45)}
.danger{color:var(--err)!important;border-color:rgba(239,68,68,.3)!important}

/* Theme */
[data-theme=light] .sun{display:none}[data-theme=light] .moon{display:block}
[data-theme=dark] .sun,.app .sun{display:block}[data-theme=dark] .moon,.app .moon{display:none}

/* Now Playing Bar */
.npb{position:sticky;top:calc(var(--hh) + var(--st));z-index:39;display:flex;align-items:center;gap:10px;height:var(--nh);padding:0 12px;background:var(--bg3);border-bottom:1px solid var(--l1);cursor:pointer;animation:npb .3s ease}
@keyframes npb{from{transform:translateY(-100%);opacity:0}to{transform:translateY(0);opacity:1}}
.npb-info{flex:1;min-width:0;display:flex;flex-direction:column}
.npb-title{font-size:13px;font-weight:600;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.npb-sub{font-size:11px;color:var(--t3)}
.npb-ctrls{display:flex;align-items:center;gap:2px}

/* Main */
.main{flex:1;max-width:1200px;margin:0 auto;padding:16px 12px 100px;width:100%}
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:8px;margin-bottom:16px}
.stat{display:flex;flex-direction:column;align-items:center;padding:12px;border-radius:var(--rl);background:var(--bgs);border:1px solid var(--l1)}
.stat-n{font-size:24px;font-weight:800;font-variant-numeric:tabular-nums}
.stat-l{font-size:11px;color:var(--t3)}
@media(max-width:480px){.stats{grid-template-columns:repeat(2,1fr)}}

/* Cards / Panels */
.panels{display:grid;grid-template-columns:repeat(auto-fit,minmax(320px,1fr));gap:14px}
.card{border-radius:var(--rxl);background:var(--bgs);border:1px solid var(--l1);overflow:hidden;contain:layout style paint}
.card:hover{border-color:var(--l2)}
.card.full{grid-column:1/-1}
.card-h{padding:16px 16px 0}
.card-h h3{font-size:18px;font-weight:700}
.card-h p{font-size:12px;color:var(--t3);margin-top:2px}
.card-b{padding:14px 16px 16px;display:flex;flex-direction:column;gap:12px}

/* Forms */
.stack{display:flex;flex-direction:column;gap:12px}
.row{display:flex;gap:8px;align-items:flex-end;flex-wrap:wrap}
.field{display:flex;flex-direction:column;gap:4px}
.field label{font-size:12px;font-weight:500;color:var(--t2)}
.grow{flex:1}
input,select,textarea{width:100%;padding:9px 12px;border-radius:var(--r);border:1px solid var(--l2);background:var(--bg);color:var(--t1);font-size:13px;outline:none;transition:border-color var(--tf)}
input:focus,select:focus{border-color:var(--ac);box-shadow:0 0 0 3px var(--acs)}
input::placeholder{color:var(--t3)}
select{appearance:none;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='10' viewBox='0 0 24 24' fill='none' stroke='%23a1a1aa' stroke-width='2'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 10px center;padding-right:30px;cursor:pointer}

/* Toggle */
.toggle{display:flex;align-items:center;gap:10px;cursor:pointer;font-size:13px;user-select:none}
.toggle input{display:none}
.toggle-sw{position:relative;width:38px;height:22px;background:var(--l3);border-radius:11px;transition:background var(--tf);flex-shrink:0}
.toggle-sw::after{content:'';position:absolute;top:2px;left:2px;width:18px;height:18px;background:#fff;border-radius:50%;transition:transform var(--tf);box-shadow:0 1px 2px rgba(0,0,0,.2)}
.toggle input:checked+.toggle-sw{background:var(--ac)}
.toggle input:checked+.toggle-sw::after{transform:translateX(16px)}

/* Drop zone */
.drop{display:flex;flex-direction:column;align-items:center;gap:6px;padding:24px;border-radius:var(--rl);border:2px dashed var(--l3);background:var(--bgh);color:var(--t3);cursor:pointer;transition:all var(--t);font-size:13px}
.drop.over{border-color:var(--ac);background:var(--acs);color:var(--ac)}

/* Media list */
.ml{display:flex;flex-direction:column;gap:6px}
.mi{display:flex;align-items:center;gap:10px;padding:10px 12px;border-radius:var(--r);background:var(--bgh);border:1px solid var(--l1);transition:all var(--tf)}
.mi:hover{background:var(--bga);border-color:var(--l2)}
.mi-info{flex:1;min-width:0}
.mi-info strong{display:block;font-size:13px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.mi-info .meta{font-size:11px;color:var(--t3)}
.mi-acts{display:flex;gap:3px;flex-shrink:0}
.mi.stag{animation:stag .3s ease backwards}
@keyframes stag{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}
.empty{display:flex;flex-direction:column;align-items:center;gap:6px;padding:24px;text-align:center;color:var(--t3);font-size:13px}
.empty strong{color:var(--t2);font-weight:500}

/* Player */
.player{display:flex;flex-direction:column;align-items:center;gap:12px;padding:8px 0}
.player h4{font-size:16px;font-weight:700;text-align:center}
.muted{color:var(--t3);font-size:12px}
.prog{display:flex;align-items:center;gap:8px;width:100%;max-width:460px}
.time{font-size:11px;color:var(--t3);font-variant-numeric:tabular-nums;min-width:32px}
.time:last-child{text-align:right}
.prog-track{flex:1;height:4px;border-radius:2px;background:var(--l3);cursor:pointer;position:relative;touch-action:none}
.prog-track:hover{height:6px}
.prog-fill{position:absolute;left:0;top:0;height:100%;background:var(--ac);border-radius:2px;width:0%;transition:width .1s linear}
.pl-main{display:flex;align-items:center;gap:14px}
.pl-extra{display:flex;align-items:flex-end;gap:10px;flex-wrap:wrap;justify-content:center}
.pl-extra .field{min-width:80px}

/* Chapters */
.ch-acts{display:flex;flex-wrap:wrap;gap:3px;max-height:48px;overflow-y:auto;padding-right:4px}
.ch-acts::-webkit-scrollbar{width:3px}.ch-acts::-webkit-scrollbar-thumb{background:var(--l3);border-radius:2px}

/* Console */
.console{padding:12px;border-radius:var(--r);background:var(--bg);border:1px solid var(--l2);font:11px/1.5 var(--fm);color:var(--t2);white-space:pre-wrap;overflow:auto;max-height:160px}

/* Search */
.search-match{background:var(--acs);color:var(--ac);border-radius:3px;padding:0 2px}

/* Usage bar */
.usage{display:flex;align-items:center;gap:10px;padding:10px 14px;border-radius:var(--r);background:var(--bgh);border:1px solid var(--l1)}
.usage-bar{flex:1;height:5px;border-radius:3px;background:var(--l3);overflow:hidden}
.usage-fill{height:100%;border-radius:3px;background:var(--gr);transition:width var(--t)}
.usage-txt{font-size:11px;color:var(--t3);white-space:nowrap}

/* FAQ */
.faq{border:1px solid var(--l1);border-radius:var(--r);overflow:hidden}
.faq summary{padding:12px 14px;font-size:13px;font-weight:600;cursor:pointer;list-style:none;display:flex;justify-content:space-between;align-items:center}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:'';width:16px;height:16px;background:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%23a1a1aa' stroke-width='2'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E") center no-repeat;transition:transform var(--tf)}
.faq[open] summary::after{transform:rotate(180deg)}
.faq p{padding:0 14px 12px;font-size:12px;color:var(--t2);line-height:1.6}
.faq code{background:var(--bgh);padding:1px 5px;border-radius:3px;font:11px var(--fm)}

/* Danger zone */
.danger-zone{margin-top:8px;padding-top:8px;border-top:1px solid var(--l1)}

/* Footer */
.foot{text-align:center;padding:12px 16px calc(12px + var(--bh) + var(--sb));font-size:11px;color:var(--t3);border-top:1px solid var(--l1)}
.foot a{color:var(--t2)}.foot a:hover{color:var(--t1)}

/* Bottom Nav */
.bnav{position:fixed;bottom:0;left:0;right:0;z-index:30;display:flex;justify-content:space-around;align-items:center;height:calc(var(--bh) + var(--sb));padding-bottom:var(--sb);background:rgba(9,9,11,.88);backdrop-filter:blur(20px) saturate(180%);border-top:1px solid var(--l1)}
[data-theme=light] .bnav{background:rgba(250,250,250,.88)}
.bn{display:flex;flex-direction:column;align-items:center;gap:1px;padding:4px 10px;border-radius:var(--r);color:var(--t3);font-size:10px;font-weight:500;cursor:pointer;transition:all var(--tf);-webkit-tap-highlight-color:transparent}
.bn:hover{color:var(--t2)}.bn.active{color:var(--ac)}
.card{scroll-margin-top:calc(var(--hh) + var(--nh) + var(--st) + 12px)}

/* Upload queue */
.upl-item{display:flex;align-items:center;gap:8px;padding:6px 10px;border-radius:8px;background:var(--bgh);font-size:12px}

/* Responsive */
@media(max-width:960px){.panels{grid-template-columns:1fr}}
@media(max-width:640px){.main{padding:12px 8px 90px}.stats{gap:6px}.stat{padding:10px}.stat-n{font-size:20px}.card-h{padding:14px 12px 0}.card-b{padding:12px}.pl-extra{width:100%}}

/* Reduced motion */
@media(prefers-reduced-motion:reduce){*,*::before,*::after{animation-duration:.01ms!important;transition-duration:.01ms!important}html{scroll-behavior:auto}}

/* High contrast */
@media(prefers-contrast:high){:root{--l1:rgba(255,255,255,.14);--l2:rgba(255,255,255,.24);--l3:rgba(255,255,255,.36);--t2:#d4d4d8;--t3:#a1a1aa}}

/* Touch */
@media(hover:none) and (pointer:coarse){.btn:active{transform:scale(.96)}.mi:active{background:var(--bga);transform:scale(.985)}.bn:active{transform:scale(.92)}}

/* Scrollbar */
::-webkit-scrollbar{width:6px;height:6px}::-webkit-scrollbar-track{background:transparent}::-webkit-scrollbar-thumb{background:var(--l3);border-radius:3px}