:root{
  --bg:#f4f7fb;--card:#ffffff;--text:#172033;--muted:#6b7280;--line:#e5eaf0;
  --primary:#2f5bea;--primary-soft:#eef3ff;--success:#0f9f6e;--success-soft:#ecfdf5;
  --danger:#d83a3a;--danger-soft:#fff0f0;--warning:#c47a18;--warning-soft:#fff8ea;
  --shadow:0 14px 40px rgba(26,39,74,.07);--shadow-hover:0 18px 48px rgba(26,39,74,.11);
  --radius:20px;--radius-sm:13px;
}
*{box-sizing:border-box}
html{background:var(--bg);min-height:100%}
body{margin:0;min-height:100vh;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Noto Sans Thai","Noto Sans",Arial,sans-serif;background:var(--bg);color:var(--text);-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}
a{color:inherit;text-decoration:none}
button,input,select{font:inherit}
button{touch-action:manipulation}
.wrap{width:min(100% - 32px,1080px);margin:0 auto;padding:28px 0 36px}
.topbar{display:flex;justify-content:space-between;align-items:flex-start;gap:18px;margin-bottom:22px}
.brand{font-size:21px;font-weight:800;letter-spacing:-.02em}
.back{font-size:14px;color:var(--muted)}
.page-title{font-size:30px;line-height:1.15;margin:8px 0 5px;letter-spacing:-.035em}
.page-sub{margin:0;color:var(--muted);font-size:14px;line-height:1.6}
.small{font-size:13px}.muted{color:var(--muted)}
.eyebrow{font-size:11px;letter-spacing:.12em;font-weight:800;color:var(--muted);margin-bottom:7px;text-transform:uppercase}
.status{display:inline-flex;align-items:center;gap:8px;padding:9px 13px;border-radius:999px;background:var(--success-soft);color:#08795a;font-size:13px;font-weight:750;white-space:nowrap;border:1px solid #d7f2e7}
.status.offline{background:var(--danger-soft);color:#aa2d2d;border-color:#f2d4d4}
.status.neutral{background:#eef2f7;color:#566070;border-color:#e2e7ed}
.status.warning{background:var(--warning-soft);color:#8a5c16;border-color:#f3e2bf}
.dot{width:8px;height:8px;border-radius:50%;background:currentColor;flex:0 0 auto}
.card{display:block;background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:20px;box-shadow:var(--shadow)}
.btn{display:inline-flex;justify-content:center;align-items:center;gap:8px;border:0;border-radius:13px;padding:12px 16px;font-weight:750;cursor:pointer;min-height:44px;transition:.16s ease}
.btn:hover:not(:disabled){transform:translateY(-1px)}
.btn:disabled{opacity:.46;cursor:not-allowed;transform:none}
.btn-primary{background:var(--primary);color:#fff}.btn-danger{background:var(--danger);color:#fff}.btn-ghost{background:#eef2f6;color:#364152}.btn-success{background:var(--success);color:#fff}.btn-large{padding:15px 20px}.btn-block{width:100%}
.notice{border:1px solid #dce7ff;background:#f4f7ff;border-radius:15px;padding:14px 16px;margin-bottom:16px;font-size:14px;line-height:1.65}.notice.soft{background:#fafbfc;border-color:var(--line);color:var(--muted)}.warning-soft{background:var(--warning-soft);border-color:#f2dfb8;color:#7c571d}
.input{width:100%;padding:12px 13px;border:1px solid #dfe4eb;border-radius:12px;background:#fff;color:var(--text);outline:none}.input:focus{border-color:#9ab2f4;box-shadow:0 0 0 3px #eef4ff}.input[type=range]{padding:0;border:0;box-shadow:none;background:transparent}
.compact-select{display:grid;gap:6px;font-size:12px;font-weight:700;min-width:210px}
.dashboard-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;align-items:stretch}
.dashboard-grid>.action-card{width:100%;min-width:0}
.action-card{display:grid;grid-template-columns:54px minmax(0,1fr) 28px;gap:16px;align-items:center;min-height:168px;transition:.18s ease;overflow:hidden}
.action-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-hover);border-color:#dbe2ed}
.action-card h2{margin:0 0 7px;font-size:21px;line-height:1.25}.action-card p{margin:0;color:var(--muted);font-size:14px;line-height:1.6}.action-icon{width:54px;height:54px;border-radius:16px;background:#f0f3f7;display:grid;place-items:center;font-size:24px;font-weight:800}.primary-action .action-icon{background:var(--primary-soft);color:var(--primary)}.emergency-action{border-color:#f1d0d0}.emergency-action .action-icon{background:var(--danger-soft);color:var(--danger)}.arrow{font-size:24px;color:#9aa3b1;text-align:right}.footer-row{display:flex;justify-content:space-between;gap:14px;margin-top:22px;padding:0 2px}
.section-card{margin-bottom:16px}.section-head{display:flex;justify-content:space-between;gap:16px;align-items:flex-end;margin-bottom:16px}.section-head h2{margin:0 0 4px;font-size:20px}.section-head p{margin:0}
.form{display:grid;gap:14px}.form-grid{grid-template-columns:1fr 1fr}.form-grid label{display:grid;gap:7px;font-size:13px;font-weight:650}.form-grid .full{grid-column:1/-1}.file-input{padding:10px}
.audio-list{display:grid;gap:10px}.audio-item{display:flex;justify-content:space-between;gap:16px;align-items:center;border-top:1px solid var(--line);padding:15px 0}.audio-item:first-child{border-top:0;padding-top:0}.audio-item:last-child{padding-bottom:0}.audio-meta{display:flex;align-items:center;gap:12px;min-width:0}.audio-icon{width:42px;height:42px;border-radius:12px;background:var(--primary-soft);display:grid;place-items:center;color:var(--primary);font-size:20px}.audio-actions{display:flex;align-items:center;gap:10px}.audio-actions audio{height:36px;width:220px}.empty{text-align:center;color:var(--muted);padding:34px}
.receiver-wrap{max-width:900px}.receiver-hero{display:grid;grid-template-columns:auto minmax(0,1fr) auto;align-items:center;gap:20px;margin-bottom:14px}.receiver-orb{width:84px;height:84px;border-radius:50%;display:grid;place-items:center;background:#eef2f7;color:#7b8797;font-size:30px;position:relative}.receiver-orb.playing{background:#edf8f4;color:var(--success)}.receiver-orb.playing:after{content:"";position:absolute;inset:-7px;border:1px solid currentColor;border-radius:50%;opacity:.22;animation:pulse 1.4s infinite}.receiver-orb.emergency{background:var(--danger-soft);color:var(--danger)}@keyframes pulse{0%{transform:scale(.95);opacity:.35}70%{transform:scale(1.12);opacity:0}100%{opacity:0}}
.receiver-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin-bottom:14px}.metric-label{font-size:12px;color:var(--muted);font-weight:700;margin-bottom:5px}.metric-value{font-size:21px;font-weight:750;margin-bottom:5px}.meter{height:9px;background:#edf0f4;border-radius:999px;overflow:hidden}.meter>span{display:block;height:100%;background:#8a99ae;border-radius:inherit;transition:.2s}
.signal-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:13px}.emergency-card{position:relative;display:grid;grid-template-columns:48px minmax(0,1fr);gap:13px;text-align:left;padding:18px;border:1px solid var(--line);border-radius:18px;background:#fff;min-height:120px;overflow:hidden;touch-action:none;color:var(--text)}.emergency-card:disabled{opacity:.5}.emergency-card strong{display:block;font-size:18px;margin-bottom:3px}.emergency-card span{display:block;color:var(--muted);font-size:11px;letter-spacing:.08em}.emergency-card small{display:block;margin-top:9px;color:var(--muted)}.signal-icon{width:48px;height:48px;border-radius:14px;background:#f0f3f7;display:grid;place-items:center;font-size:23px}.severity-critical .signal-icon{background:var(--danger-soft);color:var(--danger)}.severity-warning .signal-icon{background:#fff6e8;color:var(--warning)}.severity-info .signal-icon{background:#eef7f3;color:var(--success)}.hold-progress{position:absolute;left:0;right:0;bottom:0;height:4px;background:#eef1f5}.hold-progress i{display:block;height:100%;width:0;background:var(--danger);transition:width .04s linear}
.emergency-banner{display:flex;align-items:center;justify-content:space-between;gap:16px;background:#fff0f0;border:1px solid #efc7c7;border-radius:18px;padding:15px 17px;margin-bottom:16px;color:#8f2626}.emergency-banner strong{display:block;font-size:20px}.admin-shortcut{margin-top:16px}
.modal{border:0;background:transparent;padding:0;max-width:520px;width:calc(100% - 28px)}.modal::backdrop{background:rgba(17,24,39,.42);backdrop-filter:blur(2px)}.modal-card{background:#fff;border-radius:20px;padding:22px;box-shadow:0 24px 60px rgba(0,0,0,.18)}.modal-card h2{margin:0 0 8px}.modal-card p{color:var(--muted);line-height:1.55}.modal-card label{display:grid;gap:7px;font-size:13px;font-weight:700}.modal-actions{display:flex;justify-content:flex-end;gap:9px;margin-top:18px}.toast{position:fixed;left:50%;bottom:24px;transform:translate(-50%,20px);background:#18212f;color:#fff;padding:11px 16px;border-radius:12px;opacity:0;pointer-events:none;transition:.2s;z-index:999}.toast.show{opacity:1;transform:translate(-50%,0)}.toast.ok{background:#163d32}.toast.bad{background:#7d2828}
.admin-signal-list{display:grid;gap:13px}.signal-config{display:grid;grid-template-columns:1.2fr 1.6fr .7fr 1fr 1.2fr auto;gap:12px;align-items:end}.signal-config h2{margin:0}.signal-config label{display:grid;gap:6px;font-size:12px;font-weight:700}.signal-config .check{display:flex;align-items:center;gap:8px;padding-bottom:13px}
/* Phase 2.2/2.3 Live */
.live-wrap{max-width:820px}.live-hero{margin-bottom:14px}.live-head{display:flex;align-items:flex-start;justify-content:space-between;gap:18px}.live-head h2{margin:0 0 7px;font-size:23px}.live-head p{margin:0}.live-time{text-align:right;min-width:90px}.live-time span{display:block;font-size:11px;color:var(--muted);font-weight:700}.live-time strong{font-size:25px;letter-spacing:.03em}.live-select{margin-top:18px}.live-userline{display:flex;align-items:center;gap:9px;margin:16px 0 10px;color:var(--muted);font-size:14px}.live-dot{width:9px;height:9px;border-radius:50%;background:#a7b0bc}.live-dot.on{background:var(--success)}.live-meter{height:11px}.live-meter>span{background:var(--success)}.live-setup-actions{display:flex;gap:10px;margin-top:18px}.ptt-card{text-align:center;padding:28px 20px}.ptt-button{width:min(290px,78vw);aspect-ratio:1;border-radius:50%;border:1px solid #dbe2eb;background:linear-gradient(180deg,#fff,#f3f6fa);box-shadow:0 18px 42px rgba(31,42,68,.10),inset 0 0 0 10px #f8fafc;display:inline-flex;flex-direction:column;align-items:center;justify-content:center;gap:5px;color:var(--text);touch-action:none;user-select:none;-webkit-user-select:none;transition:transform .12s ease,background .12s ease,color .12s ease,box-shadow .12s ease}.ptt-button:not(:disabled){cursor:pointer}.ptt-button:disabled{opacity:.42}.ptt-button:not(:disabled):active,.ptt-button.is-talking{transform:scale(.97)}.ptt-button.is-talking{background:linear-gradient(180deg,#e94c4c,#ce3434);color:#fff;border-color:#ce3434;box-shadow:0 18px 42px rgba(216,58,58,.22),inset 0 0 0 10px rgba(255,255,255,.08)}.ptt-icon{font-size:46px;line-height:1}.ptt-main{font-size:21px;font-weight:800}.ptt-sub{font-size:12px;letter-spacing:.1em;text-transform:uppercase;opacity:.68}.ptt-help{margin:18px auto 0;max-width:520px;line-height:1.65;font-size:13px}.live-receiver-box{margin-bottom:14px}.live-receiver-box.is-live{border-color:#efb7b7;box-shadow:0 12px 34px rgba(216,58,58,.08)}.live-receiver-box.is-live .status{background:var(--danger-soft);color:var(--danger)}
.reliability-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;margin-top:14px}.quality-card{border:1px solid var(--line);border-radius:15px;padding:14px;background:#fbfcfe}.quality-card .metric-value{font-size:18px;margin-bottom:0}.quality-good{color:var(--success)}.quality-fair{color:var(--warning)}.quality-poor{color:var(--danger)}
.control-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px}.control-block{display:grid;gap:9px}.control-block label{font-size:12px;font-weight:750;color:var(--muted)}.range-row{display:grid;grid-template-columns:1fr 58px;gap:10px;align-items:center}.range-value{text-align:right;font-weight:800;font-size:13px}.switch-row{display:flex;align-items:center;justify-content:space-between;gap:12px}.switch{position:relative;width:46px;height:26px;display:inline-block}.switch input{display:none}.switch span{position:absolute;inset:0;background:#dce2ea;border-radius:999px;transition:.2s}.switch span:after{content:"";position:absolute;width:20px;height:20px;left:3px;top:3px;background:#fff;border-radius:50%;box-shadow:0 2px 5px rgba(0,0,0,.12);transition:.2s}.switch input:checked+span{background:var(--primary)}.switch input:checked+span:after{transform:translateX(20px)}
.receiver-controls{display:grid;grid-template-columns:1fr 1fr 1fr;gap:12px}.receiver-controls .card{box-shadow:none;background:#fbfcfe}
.connection-strip{display:flex;align-items:center;justify-content:space-between;gap:12px;border:1px solid var(--line);background:#fff;border-radius:15px;padding:12px 14px;margin-top:14px}.connection-strip strong{font-size:14px}.connection-strip .small{line-height:1.4}
.receiver-body{min-height:100vh}.coming-card{max-width:660px;margin:8vh auto;text-align:center;display:grid;justify-items:center;gap:12px}.coming-card p{line-height:1.65;margin:0 0 6px}
@media(max-width:760px){
  .wrap{width:min(100% - 24px,1080px);padding:18px 0 28px}.topbar{align-items:flex-start}.page-title{font-size:26px}.dashboard-grid,.signal-grid,.receiver-grid,.control-grid,.reliability-grid,.receiver-controls{grid-template-columns:1fr}.action-card{min-height:138px;grid-template-columns:48px minmax(0,1fr) 22px;padding:17px}.action-icon{width:48px;height:48px}.action-card h2{font-size:19px}.receiver-hero{grid-template-columns:auto minmax(0,1fr)}.receiver-hero .btn{grid-column:1/-1;width:100%}.audio-item{align-items:flex-start;flex-direction:column}.audio-actions{width:100%;flex-direction:column;align-items:stretch}.audio-actions audio{width:100%}.section-head{align-items:stretch;flex-direction:column}.compact-select{min-width:0}.form-grid{grid-template-columns:1fr}.signal-config{grid-template-columns:1fr}.modal-actions{flex-direction:column-reverse}.modal-actions .btn{width:100%}.emergency-banner{align-items:flex-start;flex-direction:column}.emergency-banner .btn{width:100%}.live-head{align-items:flex-start}.live-setup-actions{flex-direction:column}.live-setup-actions .btn{width:100%}.ptt-card{padding:24px 14px}.ptt-button{width:min(265px,76vw)}.footer-row{flex-direction:column}.connection-strip{align-items:flex-start;flex-direction:column}
}
@media(max-width:430px){.action-card{grid-template-columns:44px minmax(0,1fr);}.action-card .arrow{display:none}.action-icon{width:44px;height:44px}.status{font-size:12px;padding:8px 10px}.brand{font-size:19px}}
/* Phase 2.4 TURN & Network Resilience */
.network-metrics{grid-template-columns:repeat(3,minmax(0,1fr))}
.status-cluster{display:flex;align-items:center;gap:8px;flex-wrap:wrap;justify-content:flex-end}
.network-receiver-grid{grid-template-columns:repeat(3,minmax(0,1fr))}
.health-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px;margin-bottom:16px}
.health-card{min-height:145px}.health-card h3{margin:7px 0 6px;font-size:19px}.health-line{display:flex;justify-content:space-between;gap:12px;border-top:1px solid var(--line);padding:10px 0;font-size:13px}.health-line:first-of-type{margin-top:12px}.code-soft{background:#f6f8fb;border:1px solid var(--line);border-radius:12px;padding:11px 12px;font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:12px;overflow:auto}.check-list{display:grid;gap:9px}.check-row{display:flex;align-items:flex-start;gap:10px;padding:11px 0;border-top:1px solid var(--line)}.check-row:first-child{border-top:0}.check-icon{width:28px;height:28px;border-radius:9px;background:#eef2f7;display:grid;place-items:center;flex:0 0 auto}.check-icon.good{background:var(--success-soft);color:var(--success)}.check-icon.warn{background:var(--warning-soft);color:var(--warning)}
@media(max-width:760px){.network-metrics,.network-receiver-grid,.health-grid{grid-template-columns:1fr}.status-cluster{justify-content:flex-start}}