:root {
  --bg: #f2f3f5;
  --card: #ffffff;
  --text: #1e1f22;
  --muted: #5c5f66;
  --border: #dcdee2;
  --accent: #5865f2;
  --accent-text: #ffffff;
  --green: #23a55a;
  --red: #da373c;
  --input: #ebedef;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #1e1f22;
    --card: #2b2d31;
    --text: #f2f3f5;
    --muted: #a0a3a9;
    --border: #3f4147;
    --input: #1e1f22;
  }
}

* { box-sizing: border-box; }
body {
  margin: 0;
  font: 15px/1.45 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
}
h1 { margin: 0 0 4px; font-size: 28px; }
h2 { margin: 0 0 12px; font-size: 17px; }
.hidden { display: none !important; }
.muted { color: var(--muted); }
.small { font-size: 13px; }
.center { text-align: center; justify-content: center; }

.screen { max-width: 560px; margin: 0 auto; padding: 24px 16px; }
#login { display: flex; min-height: 100vh; align-items: center; }
#login .card { width: 100%; }

header {
  display: flex; align-items: center; justify-content: space-between; gap: 12px;
  margin-bottom: 16px; flex-wrap: wrap;
}
.me { display: flex; align-items: center; gap: 8px; font-size: 17px; }

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 18px;
  margin-bottom: 16px;
}
.narrow { max-width: 380px; margin-left: auto; margin-right: auto; }

form, .row { display: flex; gap: 8px; align-items: center; }
form { margin: 12px 0; }
input, select {
  font: inherit; color: var(--text);
  background: var(--input);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 9px 11px;
  min-width: 0;
}
input { flex: 1; }
label { display: flex; flex-direction: column; gap: 6px; margin-bottom: 12px; color: var(--muted); font-size: 13px; }
label select { color: var(--text); font-size: 15px; }
label.inline { margin-top: 12px; text-align: left; }

button {
  font: inherit; cursor: pointer;
  border: 1px solid var(--border);
  background: var(--input);
  color: var(--text);
  border-radius: 8px;
  padding: 9px 14px;
  white-space: nowrap;
}
button:hover { filter: brightness(1.08); }
button.primary { background: var(--accent); border-color: var(--accent); color: var(--accent-text); }
button.danger { background: var(--red); border-color: var(--red); color: #fff; }
button.ghost { background: transparent; }
button.active { background: var(--accent); color: var(--accent-text); border-color: var(--accent); }
button.icon { padding: 6px 10px; }

#contacts { list-style: none; margin: 0; padding: 0; }
#contacts li {
  display: flex; align-items: center; gap: 10px;
  padding: 10px 4px; border-top: 1px solid var(--border);
}
#contacts li .name { flex: 1; overflow: hidden; text-overflow: ellipsis; }
#contacts li button.call { background: var(--green); border-color: var(--green); color: #fff; }
#contacts li button.call:disabled { opacity: .4; cursor: default; }

.dot { width: 10px; height: 10px; border-radius: 50%; background: var(--muted); flex: none; }
.dot.online { background: var(--green); }

.meter { flex: 1; height: 8px; background: var(--input); border-radius: 4px; overflow: hidden; }
.meter-fill { height: 100%; width: 0; background: var(--green); transition: width 60ms linear; }
#call .meter { margin: 8px 0 0; }

.overlay {
  position: fixed; inset: 0;
  background: rgba(0, 0, 0, .55);
  display: flex; align-items: center; justify-content: center;
  padding: 16px;
}
.overlay .card { width: 100%; }
.avatar {
  width: 80px; height: 80px; border-radius: 50%;
  margin: 4px auto 12px;
  background: var(--accent); color: #fff;
  display: flex; align-items: center; justify-content: center;
  font-size: 34px; font-weight: 600;
}
#call h2 { margin-bottom: 2px; font-size: 22px; }
#call .row { margin-top: 16px; }

.toast {
  position: fixed; left: 50%; bottom: 24px; transform: translateX(-50%);
  background: var(--text); color: var(--bg);
  padding: 10px 16px; border-radius: 8px;
  max-width: calc(100% - 32px);
}

label.strength span { display: flex; justify-content: space-between; }
label.strength b { color: var(--text); font-weight: 600; }
input[type="range"] { padding: 0; accent-color: var(--accent); background: none; border: none; }