:root{
  --bg:#070b1c;
  --bg-2:#0c1230;
  --panel:#171c33;
  --panel-line:#2b3358;
  --text:#eaf0ff;
  --muted:#8f9bc4;
  --cyan:#35e0ff;
  --magenta:#ff3df2;
  --gold:#f2b705;
  --err:#ff6b7a;
  --font:'Sarabun','Noto Sans Thai','Leelawadee UI',system-ui,sans-serif;
  --font-head:'Kanit','Sarabun',system-ui,sans-serif;
  --safe-t:env(safe-area-inset-top,0px);
  --safe-b:env(safe-area-inset-bottom,0px);
  --safe-l:env(safe-area-inset-left,0px);
  --safe-r:env(safe-area-inset-right,0px);
}
*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}
html,body{height:100%;margin:0;background:var(--bg);color:var(--text);font-family:var(--font);font-size:16px;line-height:1.5}
body{overflow:hidden;background:radial-gradient(120% 60% at 50% 0%,#141c4a 0%,var(--bg) 60%)}
button{font:inherit;color:inherit;cursor:pointer}
[hidden]{display:none!important}

.app{
  position:relative;display:flex;flex-direction:column;height:100dvh;max-width:480px;margin:0 auto;
  background:linear-gradient(180deg,rgba(7,11,28,0) 0%,var(--bg) 30%);
  padding-left:var(--safe-l);padding-right:var(--safe-r);
}
@media (min-width:640px){
  body{display:grid;place-items:center}
  .app{height:min(900px,94dvh);border-radius:36px;border:1.5px solid transparent;
    background:linear-gradient(var(--bg),var(--bg)) padding-box,linear-gradient(160deg,var(--cyan),var(--magenta)) border-box;
    box-shadow:0 0 40px rgba(53,224,255,.25),0 0 80px rgba(255,61,242,.15);overflow:hidden}
}

/* header */
.top{position:absolute;z-index:3;top:0;left:0;right:0;display:flex;justify-content:space-between;align-items:flex-start;
  padding:calc(14px + var(--safe-t)) 18px 0 22px}
.brand{display:flex;flex-direction:column;line-height:1.1;filter:drop-shadow(0 2px 10px rgba(7,11,28,.85))}
.brand-name{font-family:var(--font-head);font-weight:600;font-size:26px;letter-spacing:.2em;
  background:linear-gradient(90deg,var(--cyan),var(--magenta));-webkit-background-clip:text;background-clip:text;color:transparent}
.brand-sub{font-size:10.5px;letter-spacing:.28em;color:#c3cdf2;margin-top:4px;text-shadow:0 1px 8px rgba(7,11,28,.9)}
.icon-btn{width:40px;height:40px;border-radius:50%;border:1px solid var(--panel-line);background:rgba(23,28,51,.7);display:grid;place-items:center;color:var(--muted)}
.icon-btn:active{transform:scale(.94)}

/* hero */
.hero{position:relative;flex:0 0 clamp(150px,27dvh,250px);overflow:hidden}
.avatar{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;object-position:50% 24%;opacity:.95;transition:opacity .45s ease}
.hero-fade{position:absolute;inset:0;background:linear-gradient(180deg,rgba(7,11,28,.88) 0%,rgba(7,11,28,.55) 22%,rgba(7,11,28,.05) 48%,rgba(7,11,28,.3) 72%,var(--bg) 100%)}

/* log */
.log{flex:1;min-height:0;overflow-y:auto;padding:6px 18px 14px;display:flex;flex-direction:column;gap:12px;scroll-behavior:smooth;overscroll-behavior:contain}
.msg{max-width:84%;display:flex;flex-direction:column;gap:3px;animation:in .22s ease-out}
.msg.freya{align-self:flex-start}
.msg.me{align-self:flex-end;align-items:flex-end}
.bubble{padding:11px 15px;border-radius:20px;white-space:pre-wrap;overflow-wrap:anywhere;word-break:break-word;font-size:16px}
.freya .bubble{background:var(--panel);border:1px solid var(--panel-line);border-top-left-radius:6px;box-shadow:0 0 14px rgba(53,224,255,.08)}
.me .bubble{background:linear-gradient(135deg,rgba(53,224,255,.2),rgba(255,61,242,.18));border:1px solid rgba(53,224,255,.55);border-top-right-radius:6px}
.err .bubble{border-color:var(--err);color:#ffd3d8}
.time{font-size:11px;color:var(--muted);padding:0 6px}
@keyframes in{from{opacity:0;transform:translateY(6px)}to{opacity:1;transform:none}}

.typing .bubble{display:flex;gap:5px;align-items:center;padding:14px 16px}
.dot{width:7px;height:7px;border-radius:50%;background:var(--cyan);opacity:.4;animation:b 1.1s infinite}
.dot:nth-child(2){animation-delay:.15s}.dot:nth-child(3){animation-delay:.3s}
@keyframes b{0%,60%,100%{opacity:.35;transform:none}30%{opacity:1;transform:translateY(-4px)}}

/* composer */
.composer{display:flex;align-items:flex-end;gap:10px;padding:8px 14px calc(12px + var(--safe-b));background:linear-gradient(180deg,rgba(7,11,28,0),var(--bg) 35%)}
.field{flex:1;display:flex;align-items:flex-end;gap:6px;background:var(--panel);border:1px solid var(--panel-line);border-radius:26px;padding:6px 6px 6px 18px;transition:border-color .15s,box-shadow .15s}
.field:focus-within{border-color:var(--cyan);box-shadow:0 0 0 3px rgba(53,224,255,.15),0 0 18px rgba(53,224,255,.2)}
textarea{flex:1;min-width:0;resize:none;border:0;outline:0;background:transparent;color:var(--text);font:inherit;font-size:16px;line-height:1.45;max-height:132px;padding:7px 0}
textarea::placeholder{color:var(--muted)}
.send{width:38px;height:38px;border-radius:50%;border:0;background:linear-gradient(135deg,var(--cyan),var(--magenta));color:#06101f;display:grid;place-items:center;flex:none}
.send:active{transform:scale(.92)}
.mic{width:52px;height:52px;border-radius:50%;flex:none;border:1.5px solid var(--cyan);background:rgba(53,224,255,.08);color:var(--cyan);display:grid;place-items:center;box-shadow:0 0 16px rgba(53,224,255,.35)}
.mic:active{transform:scale(.94)}
.mic.on{background:linear-gradient(135deg,var(--cyan),var(--magenta));color:#06101f;border-color:transparent;animation:pulse 1.2s infinite}
@keyframes pulse{0%{box-shadow:0 0 0 0 rgba(255,61,242,.55)}100%{box-shadow:0 0 0 18px rgba(255,61,242,0)}}

/* gate */
.gate{position:fixed;inset:0;z-index:20;display:grid;place-items:center;padding:24px;background:rgba(7,11,28,.96)}
.gate-card{width:min(360px,100%);display:flex;flex-direction:column;gap:14px;text-align:center}
.gate-card h1{margin:0;font-family:var(--font-head);font-size:34px;letter-spacing:.24em;background:linear-gradient(90deg,var(--cyan),var(--magenta));-webkit-background-clip:text;background-clip:text;color:transparent}
.gate-card p{margin:0;color:var(--muted)}
.gate-card input{height:50px;border-radius:16px;border:1px solid var(--panel-line);background:var(--panel);color:var(--text);padding:0 16px;font:inherit;font-size:16px;outline:0;text-align:center}
.gate-card input:focus{border-color:var(--cyan);box-shadow:0 0 0 3px rgba(53,224,255,.15)}
.gate-card button{height:50px;border-radius:16px;border:0;font-weight:600;color:#06101f;background:linear-gradient(135deg,var(--cyan),var(--magenta))}
.gate-err{min-height:1.4em;color:var(--err);font-size:14px}

/* menu + toast */
.menu{border:1px solid var(--panel-line);background:var(--panel);color:var(--text);border-radius:22px;padding:10px;width:min(320px,calc(100vw - 32px))}
.menu::backdrop{background:rgba(0,0,0,.6)}
.menu button{display:block;width:100%;text-align:left;padding:14px 16px;border:0;background:transparent;border-radius:14px;font-size:16px}
.menu button:active{background:rgba(255,255,255,.07)}
.menu .ghost{color:var(--muted)}
.toast{position:fixed;left:50%;bottom:calc(92px + var(--safe-b));transform:translate(-50%,12px);opacity:0;pointer-events:none;
  background:#222a4a;border:1px solid var(--panel-line);padding:10px 16px;border-radius:14px;font-size:14px;max-width:calc(100vw - 32px);text-align:center;transition:.2s;z-index:30}
.toast.show{opacity:1;transform:translate(-50%,0)}

@media (prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important;scroll-behavior:auto!important}}