:root{
  --accent:#009688;
  --bg:#f6f7fb;
  --text:#1f2937;
  --muted:#6b7280;
  --border:#e6e8ef;

  --nav-bg:rgba(255,255,255,.86);
  --nav-border:#e6e8ef;
  --nav-muted:#64748b;
  --nav-active:#009688;

  --shadow:0 10px 30px rgba(16,24,40,.06);
  --shadow-nav: 0 -6px 18px rgba(2,6,23,.08);
}

*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0; background:var(--bg); color:var(--text);
  font:14px/1.5 system-ui, Segoe UI, Arial, sans-serif;
  -webkit-font-smoothing:antialiased; -moz-osx-font-smoothing:grayscale;
}

/* Header */
.app-header{
  position:sticky; top:0; z-index:40;
  background:#fff; border-bottom:1px solid var(--border);
  backdrop-filter:saturate(140%) blur(8px);
}
.app-header__content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
  max-width: 956px;
  margin: auto;
}
.container{max-width:980px; margin:0 auto; padding:10px 12px}
.logo-center{display:flex; align-items:center; gap:10px; justify-content:center; cursor: pointer;}
.app-header__tariff-icon {
  width: 28px;
  height: 28px;
  margin-left: 12px;
}
.app-header__profile-icon {
  width: 28px;
  height: 28px;
  margin-right: 12px;
}
.app-header__profile-icon-wrapper {
  display: block;
  cursor: pointer;
}
.logo{width:28px;height:28px}
.title{font-weight:800; letter-spacing:.3px}

/* Panels */
#app-screen{max-width:980px; margin:0 auto; padding:4px 12px 12px; padding-bottom:100px}
.panel{min-height:60vh; background:#fff; border:1px solid var(--border); border-radius:16px; box-shadow:var(--shadow); padding:14px}
.panel[hidden]{display:none}

/* Bottom nav */
.bottom-nav{
  max-width: 956px;
  margin: 0 auto;
  padding: 12px;
  position:fixed; left:0; right:0; bottom:0; z-index:1000;
  backdrop-filter:saturate(140%) blur(14px);
  background:var(--nav-bg);
  border-top:1px solid var(--nav-border);
  box-shadow:var(--shadow-nav);
  /*padding:6px max(8px, env(safe-area-inset-left)) calc(8px + env(safe-area-inset-bottom)) max(8px, env(safe-area-inset-right));*/
  display:grid; grid-template-columns:repeat(3,1fr); gap:8px; /* было 5 → стало 4 */
}

.nav-btn{
  border:0; background:transparent; cursor:pointer;
  display:grid; justify-items:center; align-content:center;
  gap:6px; padding:8px 6px; border-radius:14px;
  color:var(--nav-muted); font:600 12px/1.1 system-ui, Segoe UI, Arial, sans-serif;
  transition:background .2s ease, color .2s ease, transform .06s ease;
}
.nav-btn:active{transform:translateY(1px)}
.nav-btn.active{ color:var(--nav-active); background:rgba(0,150,136,.09) }

.nav-icon{width:26px; height:26px; opacity:.95}
.panel-tariff {
  background: none;
  padding: 0;
  border: none;
  margin: -104px auto 0;
  padding-bottom: 100px;
  max-width: 956px;
}
#panel-chat {
  height: calc(100vh - 169px);
  position: relative;
}