/* ธีมเดียวกับเอกสารออกแบบ: dark + teal telecom accent */
:root{
  --bg:#0F171B; --surface:#172329; --surface2:#1E2C32;
  --fg:#E6ECEA; --muted:#95A7AE;
  --accent:#4EC0C9; --accent-ink:#0A5A62;
  --good:#6FBF8E; --warn:#D9A441; --crit:#E5745F;
  --line:#2B3A41;
  --font:'IBM Plex Sans Thai','Leelawadee UI',system-ui,sans-serif;
  --font-display:'Anuphan','IBM Plex Sans Thai','Leelawadee UI',system-ui,sans-serif;
}
*{box-sizing:border-box}
html,body{height:100%}
body{margin:0;background:var(--bg);color:var(--fg);font-family:var(--font);font-size:15px;line-height:1.6}
button{font-family:inherit}
.hidden{display:none!important}

/* ---------- หน้าจอแบบเต็ม ---------- */
.screen{display:none;min-height:100vh;position:relative}
.screen.active{display:flex}
.screen.room.active{display:grid;grid-template-rows:auto auto 1fr auto;height:100vh}

.landing{margin:auto;max-width:520px;width:100%;padding:32px 20px;display:flex;flex-direction:column;gap:20px}
.landing.center{align-items:center;text-align:center}
.brand h1{font-family:var(--font-display);font-size:30px;margin:8px 0 6px}
.brand .sub{color:var(--muted);margin:0}
.sub{color:var(--muted)}
.brand-dot{display:inline-block;width:12px;height:12px;border-radius:50%;background:var(--accent);box-shadow:0 0 12px var(--accent)}
.brand-dot.small{width:9px;height:9px}

.card{background:var(--surface);border:1px solid var(--line);border-radius:14px;padding:24px;display:flex;flex-direction:column;gap:14px}
.card h2{font-family:var(--font-display);margin:0;font-size:18px}
.field{display:flex;flex-direction:column;gap:6px}
.field>span{font-size:13px;color:var(--muted)}
.warn-text{color:var(--warn);font-weight:600}
input{background:var(--surface2);border:1px solid var(--line);border-radius:9px;color:var(--fg);padding:10px 12px;font-family:inherit;font-size:15px;min-width:0}
input:focus{outline:2px solid var(--accent);outline-offset:-1px;border-color:transparent}
.check{display:flex;gap:10px;align-items:flex-start;font-size:14px;color:var(--fg)}
.check input{margin-top:4px;accent-color:var(--accent)}
.btn{border:1px solid var(--line);background:var(--surface2);color:var(--fg);border-radius:10px;padding:10px 16px;font-size:15px;cursor:pointer;transition:filter .15s}
.btn:hover{filter:brightness(1.15)}
.btn.primary{background:var(--accent);border-color:var(--accent);color:#08282C;font-weight:600}
.btn.compact{padding:8px 14px}
.btn.ghost{background:transparent}
.btn.danger{background:var(--crit);border-color:var(--crit);color:#2B0E08;font-weight:600}
.btn.icon{display:inline-flex;align-items:center;justify-content:center;width:40px;height:40px;padding:0;flex:none}
.btn.icon svg{width:19px;height:19px}
.copy-row{display:flex;gap:8px}
.copy-row input{flex:1}
.code-display{font-family:var(--font-display);font-size:44px;font-weight:700;letter-spacing:.06em;text-align:center;color:var(--accent);margin:4px 0}
.code-display.small{font-size:34px}
.room-label{color:var(--muted);text-align:center;margin:0;font-size:13px}
.divider{height:1px;background:var(--line)}
.error{color:var(--crit);font-size:14px;margin:0}

.spinner{width:44px;height:44px;border-radius:50%;border:3px solid var(--line);border-top-color:var(--accent);animation:spin 1s linear infinite;margin-bottom:8px}
@keyframes spin{to{transform:rotate(360deg)}}
@media (prefers-reduced-motion:reduce){.spinner{animation-duration:2.4s}}

/* ---------- หัวห้องประชุม ---------- */
.room-header{display:flex;align-items:center;gap:10px;padding:10px 16px;background:var(--surface);border-bottom:1px solid var(--line)}
.chip{background:var(--surface2);border:1px solid var(--line);border-radius:999px;padding:3px 12px;font-size:13px;font-weight:600;font-variant-numeric:tabular-nums}
.chip.host-chip{color:var(--accent);border-color:var(--accent-ink)}
.conn{display:flex;align-items:center;gap:7px;font-size:12.5px;color:var(--muted)}
.conn i{width:8px;height:8px;border-radius:50%;background:var(--warn);display:inline-block}
.conn.good i{background:var(--good)}
.conn.bad i{background:var(--crit)}
.spacer{flex:1}

/* ---------- แถบกำลังบันทึก ---------- */
.rec-banner{display:flex;align-items:center;justify-content:center;gap:9px;padding:5px 12px;background:rgba(229,116,95,.14);border-bottom:1px solid rgba(229,116,95,.4);color:var(--crit);font-size:13.5px;font-weight:600}
.rec-dot{width:10px;height:10px;border-radius:50%;background:var(--crit);flex:none;animation:recpulse 1.6s ease-in-out infinite}
@keyframes recpulse{0%,100%{opacity:1}50%{opacity:.25}}
@media (prefers-reduced-motion:reduce){.rec-dot{animation:none}}
#rec-btn.recording{background:var(--crit);border-color:var(--crit);color:#2B0E08;font-weight:600}

/* ---------- กริดวิดีโอ ---------- */
.room-main{position:relative;overflow:auto;padding:14px;display:flex;flex-direction:column;gap:12px}
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:12px;align-content:start;flex:1}
.grid.mini{flex:0 0 auto;grid-template-columns:repeat(auto-fill,minmax(170px,1fr))}
.tile{position:relative;background:var(--surface);border:2px solid var(--line);border-radius:12px;overflow:hidden;aspect-ratio:16/10}
.tile video{width:100%;height:100%;object-fit:cover;display:block}
.tile.speaking{border-color:var(--accent)}
.tile .avatar{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;color:var(--accent);font-family:var(--font-display);font-size:40px;font-weight:700;opacity:.35}
.tile .name{position:absolute;left:8px;bottom:6px;background:rgba(10,20,24,.72);padding:2px 9px;border-radius:7px;font-size:12.5px;max-width:calc(100% - 60px);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.tile .mic{position:absolute;right:8px;bottom:6px;width:22px;height:22px;border-radius:6px;background:rgba(10,20,24,.72);display:flex;align-items:center;justify-content:center;color:var(--crit)}
.tile .mic svg{width:13px;height:13px}
.tile .q{position:absolute;right:8px;top:8px;width:9px;height:9px;border-radius:50%;background:var(--good)}
.tile .q.poor{background:var(--warn)}
.tile .q.lost{background:var(--crit)}
.tile.local video{transform:scaleX(-1)}
.stage{position:relative;flex:1;min-height:0}
.stage-video{position:relative;background:#000;border-radius:12px;overflow:hidden;height:100%;min-height:220px}
.stage-video video{width:100%;height:100%;object-fit:contain;display:block}
.stage-label{position:absolute;left:10px;bottom:8px;background:rgba(10,20,24,.72);padding:2px 10px;border-radius:7px;font-size:12.5px}

/* ---------- แถบควบคุม ---------- */
.controls{display:flex;align-items:center;justify-content:center;gap:10px;padding:12px;background:var(--surface);border-top:1px solid var(--line);position:relative;flex-wrap:wrap}
.ctl{width:48px;height:48px;border-radius:14px;border:1px solid var(--line);background:var(--surface2);color:var(--fg);cursor:pointer;display:flex;align-items:center;justify-content:center;transition:filter .15s,background .15s}
.ctl svg{width:21px;height:21px}
.ctl:hover{filter:brightness(1.2)}
.ctl .i-off{display:none}
.ctl.off .i-on{display:none}
.ctl.off .i-off{display:block}
.ctl.off{background:#3A2226;border-color:#55323A;color:var(--crit)}
.ctl.leave{background:var(--crit);border-color:var(--crit);color:#2B0E08}
.ctl-sep{width:1px;height:30px;background:var(--line)}
.react-bar{position:absolute;bottom:70px;display:flex;gap:8px;background:var(--surface);border:1px solid var(--line);border-radius:14px;padding:8px 12px}
.react-bar button{background:none;border:none;font-size:26px;cursor:pointer;transition:transform .12s}
.react-bar button:hover{transform:scale(1.25)}

/* ---------- แผงข้าง (แชท/ผู้เข้าร่วม) ---------- */
.panel{position:absolute;top:57px;right:0;bottom:78px;width:min(340px,100%);background:var(--surface);border-left:1px solid var(--line);display:flex;flex-direction:column;z-index:5}
.panel-tabs{display:flex;align-items:center;gap:4px;padding:8px 10px;border-bottom:1px solid var(--line)}
.tab{background:none;border:none;color:var(--muted);padding:7px 12px;border-radius:8px;cursor:pointer;font-size:14px;font-weight:600}
.tab.active{color:var(--accent);background:var(--surface2)}
.panel-tabs .close{margin-left:auto;width:34px;height:34px}
.panel-view{display:flex;flex-direction:column;flex:1;min-height:0}
.chat-list{list-style:none;margin:0;padding:12px;overflow-y:auto;flex:1;display:flex;flex-direction:column;gap:8px}
.chat-list li{max-width:88%;padding:8px 12px;border-radius:12px;background:var(--surface2);font-size:14px;word-wrap:break-word}
.chat-list li .who{display:block;color:var(--accent);font-size:12px;margin-bottom:2px}
.chat-list li.me{align-self:flex-end;background:var(--accent-ink);color:#EAF7F8}
.chat-list li.system{align-self:center;background:none;color:var(--muted);font-size:12.5px;padding:2px}
.chat-form{display:flex;gap:8px;padding:10px;border-top:1px solid var(--line)}
.chat-form input{flex:1}
.people-section{padding:0 14px}
#people-view{overflow-y:auto;padding-bottom:12px}
#people-view h3{font-size:13px;color:var(--muted);margin:14px 14px 6px;font-weight:600}
.count{color:var(--accent)}
.member-list,.waiting-list{list-style:none;margin:0;padding:0 14px;display:flex;flex-direction:column;gap:2px}
.member-list li,.waiting-list li{display:flex;align-items:center;gap:10px;padding:8px 10px;border-radius:9px;font-size:14px}
.member-list li:hover,.waiting-list li:hover{background:var(--surface2)}
.member-list .role{margin-left:auto;font-size:11.5px;color:var(--accent)}
.member-list .kick,.waiting-list .admit{margin-left:8px;padding:4px 10px;font-size:12.5px;border-radius:7px;border:1px solid var(--line);background:none;color:var(--fg);cursor:pointer}
.member-list .kick{color:var(--crit);border-color:#55323A}
.rec-list li{flex-direction:column;align-items:flex-start;gap:4px}
.rec-list .rec-file{font-size:12.5px;color:var(--muted);font-variant-numeric:tabular-nums;word-break:break-all}
.rec-list .rec-dl{margin-left:auto;padding:4px 10px;font-size:12.5px;border-radius:7px;border:1px solid var(--line);background:none;color:var(--accent);cursor:pointer}
.waiting-list .admit{color:var(--good)}
.waiting-list .deny{padding:4px 10px;font-size:12.5px;border-radius:7px;border:1px solid var(--line);background:none;color:var(--crit);cursor:pointer}
.pill-dot{width:8px;height:8px;border-radius:50%;background:var(--good);flex:none}

/* ---------- ปฏิกิริยา / toast ---------- */
#float-layer{position:fixed;inset:0;pointer-events:none;z-index:50;overflow:hidden}
.reaction-float{position:absolute;bottom:90px;font-size:44px;animation:floatup 2.6s ease-out forwards}
@keyframes floatup{0%{opacity:0;transform:translateY(0) scale(.6)}12%{opacity:1}100%{opacity:0;transform:translateY(-46vh) scale(1.25)}}
@media (prefers-reduced-motion:reduce){.reaction-float{animation:none;opacity:1}}
#toasts{position:fixed;top:18px;left:50%;transform:translateX(-50%);display:flex;flex-direction:column;gap:8px;z-index:60}
.toast{background:var(--surface);border:1px solid var(--line);border-left:3px solid var(--accent);border-radius:10px;padding:10px 16px;font-size:14px;box-shadow:0 6px 24px rgba(0,0,0,.35)}
.toast.warn{border-left-color:var(--warn)}
.toast.crit{border-left-color:var(--crit)}

@media (max-width:640px){
  .code-display{font-size:36px}
  .panel{top:53px;width:100%}
  .controls{gap:7px}
  .ctl{width:44px;height:44px}
}