:root{
  --bg:#f4f6fc;
  --bg-grad: radial-gradient(1200px 600px at 10% -10%, #e8edff 0%, transparent 60%), radial-gradient(900px 500px at 110% 10%, #ffe8f3 0%, transparent 55%), #f4f6fc;
  --surface: rgba(255,255,255,.65);
  --surface-strong: rgba(255,255,255,.85);
  --border: rgba(20,24,40,.08);
  --text:#1a1d29;
  --text-soft:#5b6478;
  --accent:#6c8cff;
  --accent-2:#8aa3ff;
  --accent-soft: rgba(108,140,255,.12);
  --danger:#ef6b7a;
  --shadow: 0 1px 2px rgba(20,24,40,.04), 0 12px 32px rgba(20,24,40,.08);
  --shadow-lg: 0 2px 8px rgba(20,24,40,.06), 0 20px 60px rgba(20,24,40,.12);
  --radius: 20px;
  --radius-sm: 14px;
  --radius-lg: 26px;
}
html[data-theme="dark"]{
  --bg:#0e1018;
  --bg-grad: radial-gradient(1200px 600px at 10% -10%, #1a2040 0%, transparent 60%), radial-gradient(900px 500px at 110% 10%, #2a1838 0%, transparent 55%), linear-gradient(180deg,#0e1018,#161a26);
  --surface: rgba(255,255,255,.06);
  --surface-strong: rgba(255,255,255,.10);
  --border: rgba(255,255,255,.08);
  --text:#e6e8ef;
  --text-soft:#9aa1b6;
  --accent:#7aa2ff;
  --accent-2:#94b6ff;
  --accent-soft: rgba(122,162,255,.16);
  --shadow: 0 1px 2px rgba(0,0,0,.4), 0 12px 32px rgba(0,0,0,.4);
  --shadow-lg: 0 2px 8px rgba(0,0,0,.5), 0 20px 60px rgba(0,0,0,.55);
}

*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}
html,body{margin:0;padding:0;height:100%}
body{
  font-family:-apple-system,BlinkMacSystemFont,"SF Pro Display","Inter",system-ui,sans-serif;
  font-size:15px;
  color:var(--text);
  background:var(--bg);
  background-image:var(--bg-grad);
  background-attachment:fixed;
  -webkit-font-smoothing:antialiased;
  overscroll-behavior:none;
}
button{font-family:inherit;color:inherit;border:none;background:none;cursor:pointer}
input,textarea{font-family:inherit;font-size:inherit;color:inherit}
a{color:var(--accent);text-decoration:none}

#app{
  display:flex;flex-direction:column;
  min-height:100dvh;
  padding-top:env(safe-area-inset-top);
}

/* Top bar */
#topbar{
  position:sticky;top:0;z-index:20;
  display:flex;align-items:center;justify-content:space-between;
  padding:14px 18px 10px;
  background:linear-gradient(180deg, var(--bg) 60%, transparent);
}
.brand{display:flex;align-items:center;gap:12px}
.logo{
  width:38px;height:38px;border-radius:12px;
  background:linear-gradient(135deg,var(--accent),var(--accent-2));
  color:#fff;font-weight:800;display:grid;place-items:center;
  box-shadow:0 8px 24px rgba(108,140,255,.35);
  font-size:18px;letter-spacing:-.5px;
}
.brand-title{font-weight:700;font-size:16px;letter-spacing:-.2px}
.brand-sub{font-size:12px;color:var(--text-soft);margin-top:1px}
.icon-btn{
  width:40px;height:40px;border-radius:14px;
  background:var(--surface);backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);
  border:1px solid var(--border);
  display:grid;place-items:center;color:var(--text);
  transition:transform .15s ease;
}
.icon-btn:active{transform:scale(.92)}

/* Screen */
#screen{
  flex:1;
  padding:8px 16px 120px;
  max-width:720px;width:100%;margin:0 auto;
}

/* Cards */
.card{
  background:var(--surface);
  backdrop-filter:blur(24px) saturate(140%);
  -webkit-backdrop-filter:blur(24px) saturate(140%);
  border:1px solid var(--border);
  border-radius:var(--radius);
  box-shadow:var(--shadow);
  padding:18px;
}
.card + .card{margin-top:14px}

/* Hero */
.hero{
  padding:22px;
  background:linear-gradient(135deg, rgba(108,140,255,.18), rgba(255,255,255,.05));
  border-radius:var(--radius-lg);
}
.hero .greet{font-size:13px;color:var(--text-soft);margin-bottom:6px}
.hero h1{margin:0 0 6px;font-size:24px;letter-spacing:-.5px}
.hero .balance{font-size:14px;color:var(--text-soft)}
.hero .balance b{color:var(--text);font-size:18px}

/* Quick grid */
.quick-grid{
  display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-top:14px;
}
.quick-card{
  background:var(--surface);
  backdrop-filter:blur(24px);-webkit-backdrop-filter:blur(24px);
  border:1px solid var(--border);
  border-radius:var(--radius);
  padding:18px 16px;
  display:flex;flex-direction:column;gap:10px;
  box-shadow:var(--shadow);
  text-align:left;
  transition:transform .15s ease;
}
.quick-card:active{transform:scale(.97)}
.quick-card .ic{
  width:42px;height:42px;border-radius:12px;
  background:var(--accent-soft);color:var(--accent);
  display:grid;place-items:center;
}
.quick-card .ic svg{width:22px;height:22px}
.quick-card .t{font-weight:600;font-size:15px}
.quick-card .d{font-size:12px;color:var(--text-soft);line-height:1.4}

/* Limits */
.limits{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-top:14px}
.limit{
  display:flex;align-items:center;gap:12px;
  padding:14px;border-radius:var(--radius-sm);
  background:var(--surface-strong);border:1px solid var(--border);
}
.ring{position:relative;width:46px;height:46px;flex-shrink:0}
.ring svg{transform:rotate(-90deg)}
.ring .bg{stroke:var(--border)}
.ring .fg{stroke:var(--accent);transition:stroke-dashoffset .8s ease}
.ring .num{
  position:absolute;inset:0;display:grid;place-items:center;
  font-size:11px;font-weight:700;
}
.limit .lbl{font-size:12px;color:var(--text-soft)}
.limit .val{font-weight:600;font-size:14px;margin-top:2px}

/* Buttons */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:8px;
  padding:14px 18px;border-radius:14px;
  background:linear-gradient(135deg,var(--accent),var(--accent-2));
  color:#fff;font-weight:600;font-size:15px;
  box-shadow:0 8px 24px rgba(108,140,255,.35);
  transition:transform .12s ease,box-shadow .12s ease;
  width:100%;
}
.btn:active{transform:scale(.97)}
.btn[disabled]{opacity:.55;pointer-events:none}
.btn.ghost{
  background:var(--surface);color:var(--text);
  border:1px solid var(--border);box-shadow:none;
}
.btn.danger{background:linear-gradient(135deg,#ef6b7a,#ff8a99);box-shadow:0 8px 24px rgba(239,107,122,.35)}

/* Inputs */
.input, .textarea{
  width:100%;
  background:var(--surface-strong);
  border:1px solid var(--border);
  border-radius:14px;
  padding:14px 16px;
  outline:none;
  color:var(--text);
  transition:border-color .15s ease,box-shadow .15s ease;
}
.input:focus,.textarea:focus{
  border-color:var(--accent);
  box-shadow:0 0 0 4px var(--accent-soft);
}
.textarea{min-height:110px;resize:vertical;line-height:1.5}

/* Segment control */
.seg{
  display:flex;background:var(--surface);border:1px solid var(--border);
  border-radius:14px;padding:4px;gap:4px;
}
.seg button{
  flex:1;padding:10px;border-radius:10px;font-size:13px;font-weight:500;
  color:var(--text-soft);transition:all .2s ease;
}
.seg button.on{background:var(--surface-strong);color:var(--text);box-shadow:var(--shadow)}

/* Chat */
.chat-wrap{display:flex;flex-direction:column;gap:10px;min-height:60vh}
.bubble{
  max-width:85%;padding:12px 14px;border-radius:18px;
  line-height:1.5;font-size:14.5px;word-wrap:break-word;
  animation:fadeUp .35s ease both;
}
.bubble.user{align-self:flex-end;background:linear-gradient(135deg,var(--accent),var(--accent-2));color:#fff;border-bottom-right-radius:6px}
.bubble.bot{align-self:flex-start;background:var(--surface-strong);border:1px solid var(--border);border-bottom-left-radius:6px}
.bubble pre{background:rgba(0,0,0,.08);padding:10px;border-radius:10px;overflow-x:auto;font-size:13px;white-space:pre-wrap}
html[data-theme="dark"] .bubble pre{background:rgba(255,255,255,.08)}
.typing{display:inline-flex;gap:4px;align-items:center;padding:4px 0}
.typing span{width:6px;height:6px;border-radius:50%;background:var(--text-soft);animation:blink 1.2s infinite}
.typing span:nth-child(2){animation-delay:.2s}
.typing span:nth-child(3){animation-delay:.4s}
@keyframes blink{0%,80%,100%{opacity:.3;transform:translateY(0)}40%{opacity:1;transform:translateY(-3px)}}

/* Composer */
.composer{
  position:sticky;bottom:90px;
  background:var(--surface);backdrop-filter:blur(24px);-webkit-backdrop-filter:blur(24px);
  border:1px solid var(--border);border-radius:22px;
  padding:8px;display:flex;gap:8px;align-items:flex-end;
  box-shadow:var(--shadow-lg);margin-top:14px;
}
.composer textarea{
  flex:1;background:transparent;border:none;outline:none;
  resize:none;min-height:44px;max-height:140px;padding:11px 8px;line-height:1.4;
}
.composer .icon-btn{width:44px;height:44px}
.composer .send{
  background:linear-gradient(135deg,var(--accent),var(--accent-2));color:#fff;
  box-shadow:0 6px 18px rgba(108,140,255,.4);
}
.composer .send:active{transform:scale(.92)}
.composer .recording{background:linear-gradient(135deg,#ef6b7a,#ff8a99) !important;color:#fff;animation:pulse 1.2s infinite}
@keyframes pulse{0%,100%{transform:scale(1)}50%{transform:scale(1.08)}}

/* Account */
.acc-head{display:flex;align-items:center;gap:14px}
.avatar{
  width:64px;height:64px;border-radius:20px;
  background:linear-gradient(135deg,var(--accent),var(--accent-2));
  color:#fff;display:grid;place-items:center;font-size:24px;font-weight:700;
  box-shadow:0 8px 22px rgba(108,140,255,.35);
}
.acc-head h2{margin:0 0 4px;font-size:18px}
.acc-head .uname{font-size:13px;color:var(--text-soft)}
.row{display:flex;align-items:center;justify-content:space-between;padding:12px 0;border-top:1px solid var(--border)}
.row:first-of-type{border-top:none}
.row .lbl{font-size:14px;color:var(--text-soft)}
.row .val{font-weight:600}
.toggle{
  width:46px;height:28px;border-radius:14px;background:var(--border);
  position:relative;transition:background .25s ease;flex-shrink:0;
}
.toggle::after{
  content:"";position:absolute;top:3px;left:3px;width:22px;height:22px;
  border-radius:50%;background:#fff;box-shadow:0 2px 6px rgba(0,0,0,.2);
  transition:transform .25s ease;
}
.toggle.on{background:var(--accent)}
.toggle.on::after{transform:translateX(18px)}

/* Section title */
.section-title{
  font-size:13px;font-weight:600;color:var(--text-soft);
  text-transform:uppercase;letter-spacing:.5px;
  margin:18px 4px 10px;
}

/* Tab bar */
#tabbar{
  position:fixed;left:50%;transform:translateX(-50%);
  bottom:calc(12px + env(safe-area-inset-bottom));
  width:min(calc(100% - 24px), 540px);
  background:var(--surface);
  backdrop-filter:blur(28px) saturate(160%);
  -webkit-backdrop-filter:blur(28px) saturate(160%);
  border:1px solid var(--border);
  border-radius:22px;
  display:flex;justify-content:space-around;
  padding:8px 6px;
  box-shadow:var(--shadow-lg);
  z-index:30;
}
.tab{
  flex:1;display:flex;flex-direction:column;align-items:center;gap:3px;
  padding:8px 4px;color:var(--text-soft);font-size:10px;font-weight:500;
  border-radius:14px;transition:color .2s ease,transform .15s ease;
  position:relative;z-index:2;
}
.tab svg{width:22px;height:22px}
.tab.active{color:var(--accent)}
.tab:active{transform:scale(.92)}
#tab-indicator{
  position:absolute;top:6px;height:calc(100% - 12px);
  background:var(--accent-soft);
  border-radius:14px;
  transition:left .35s cubic-bezier(.4,1.4,.5,1), width .35s cubic-bezier(.4,1.4,.5,1);
  z-index:1;
  pointer-events:none;
}

/* Image preview */
.img-result{
  width:100%;border-radius:var(--radius);overflow:hidden;
  border:1px solid var(--border);box-shadow:var(--shadow);margin-top:14px;
  animation:fadeUp .4s ease both;
}
.img-result img{width:100%;display:block}

/* Skeleton */
.skel{
  background:linear-gradient(90deg,var(--surface) 0%,var(--surface-strong) 50%,var(--surface) 100%);
  background-size:200% 100%;animation:shimmer 1.4s infinite;
  border-radius:14px;
}
@keyframes shimmer{0%{background-position:200% 0}100%{background-position:-200% 0}}

@keyframes fadeUp{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}
.fade-in{animation:fadeUp .35s ease both}
.stagger > *{animation:fadeUp .45s ease both}
.stagger > *:nth-child(1){animation-delay:.02s}
.stagger > *:nth-child(2){animation-delay:.07s}
.stagger > *:nth-child(3){animation-delay:.12s}
.stagger > *:nth-child(4){animation-delay:.17s}
.stagger > *:nth-child(5){animation-delay:.22s}

.toast{
  position:fixed;left:50%;bottom:calc(110px + env(safe-area-inset-bottom));
  transform:translateX(-50%);
  background:var(--surface-strong);backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);
  border:1px solid var(--border);
  padding:12px 18px;border-radius:14px;
  box-shadow:var(--shadow-lg);font-size:14px;
  z-index:100;animation:fadeUp .25s ease both;
  max-width:90%;
}

.muted{color:var(--text-soft);font-size:13px}
.center{text-align:center}
.spacer{height:14px}
.progress{height:6px;background:var(--border);border-radius:3px;overflow:hidden;margin-top:8px}
.progress > div{height:100%;background:linear-gradient(90deg,var(--accent),var(--accent-2));transition:width .3s ease;border-radius:3px}

.channel-item{
  display:flex;align-items:center;justify-content:space-between;
  padding:14px;border-radius:14px;
  background:var(--surface-strong);border:1px solid var(--border);
  margin-bottom:10px;
}
.channel-item .name{font-weight:600;font-size:14px}
.channel-item .status{font-size:12px;margin-top:3px}
.channel-item .status.ok{color:#3bb273}
.channel-item .status.no{color:var(--danger)}
.channel-item a{
  padding:8px 14px;border-radius:10px;background:var(--accent-soft);
  color:var(--accent);font-size:13px;font-weight:600;
}

@media(min-width:600px){
  .quick-grid{grid-template-columns:repeat(4,1fr)}
}