:root {
  --bg: #f4f5f7;
  --card: #ffffff;
  --text: #1c1e21;
  --muted: #6b7280;
  --border: #d9dce1;
  --input: #ffffff;
  --accent: #5865f2;
  --accent-text: #ffffff;
  --ok: #16a34a;
  --bad: #dc2626;
  --warn: #d97706;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #15171a;
    --card: #1f2226;
    --text: #e6e7e9;
    --muted: #9aa0a8;
    --border: #33373d;
    --input: #17191c;
    --accent: #6c78f5;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 15px/1.5 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}

h1 { font-size: 1.25rem; margin: 0; }
h2 { font-size: 1.05rem; margin: 0 0 12px; display: inline; }
h3 { font-size: .95rem; margin: 20px 0 8px; color: var(--muted); }
section.card h2 { display: block; }
code { background: var(--bg); padding: 1px 5px; border-radius: 4px; font-size: .9em; }
a { color: var(--accent); }

.hidden { display: none !important; }
.muted, .hint { color: var(--muted); }
.hint { font-size: .85rem; margin: 6px 0 0; }
.small { font-size: .85rem; }
.error { color: var(--bad); min-height: 1.2em; margin: 8px 0 0; }

.topbar {
  display: flex; justify-content: space-between; align-items: center;
  padding: 14px 16px; border-bottom: 1px solid var(--border); background: var(--card);
}

.content { max-width: 760px; margin: 0 auto; padding: 16px 16px 90px; }

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 18px;
  margin-bottom: 16px;
}

details.card summary { cursor: pointer; list-style: none; }
details.card summary::before { content: "▸ "; color: var(--muted); }
details.card[open] summary::before { content: "▾ "; }

label { display: block; margin-top: 12px; font-weight: 500; }
label:first-child { margin-top: 0; }
.label { display: block; font-size: .8rem; color: var(--muted); margin-bottom: 2px; }

input[type=text], input[type=password], input[type=number], select {
  display: block; width: 100%; margin-top: 4px;
  padding: 8px 10px; font: inherit; color: var(--text);
  background: var(--input); border: 1px solid var(--border); border-radius: 6px;
}
input:focus, select:focus { outline: 2px solid var(--accent); outline-offset: -1px; }

label.switch, label.radio { display: flex; align-items: center; gap: 8px; font-weight: 400; }
fieldset.choice { border: 0; padding: 0; margin: 0 0 8px; display: flex; gap: 20px; flex-wrap: wrap; }
fieldset.choice legend { font-weight: 500; margin-bottom: 6px; width: 100%; }
fieldset.choice label.radio { margin-top: 0; }

.channel { margin-top: 14px; }
.row { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; margin-top: 12px; }
.channel .row { margin-top: 0; }
.channel .row select, .channel .row input { flex: 1 1 200px; margin-top: 0; }

button, .button {
  font: inherit; padding: 8px 14px; border-radius: 6px; cursor: pointer;
  border: 1px solid var(--border); background: var(--card); color: var(--text);
  text-decoration: none; display: inline-block;
}
button:hover, .button:hover { border-color: var(--accent); }
button.primary, .button.primary { background: var(--accent); color: var(--accent-text); border-color: var(--accent); }
.button.disabled { opacity: .5; pointer-events: none; }

.invite-box {
  display: flex; justify-content: space-between; align-items: center; gap: 12px; flex-wrap: wrap;
  margin-top: 16px; padding: 12px 14px; border: 1px solid var(--border); border-radius: 8px; background: var(--bg);
}
.invite-box.attention { border-color: var(--warn); }
.invite-box .hint { margin: 2px 0 0; }

.steps { margin: 8px 0; padding-left: 22px; }
.steps li { margin: 4px 0; }

.webhook-current {
  display: flex; align-items: center; gap: 10px; flex-wrap: wrap;
  margin-top: 14px; padding: 12px 14px; border: 1px solid var(--ok); border-radius: 8px; background: var(--bg);
}
.webhook-current.bad { border-color: var(--bad); }
.webhook-current .grow { flex: 1 1 200px; min-width: 0; }
.webhook-current .hint { display: block; margin: 0; overflow-wrap: anywhere; }
#setup-card.attention { border-color: var(--warn); }
fieldset.plain { border: 0; padding: 0; margin: 0; min-width: 0; }
fieldset.plain:disabled { opacity: .45; }
.lock-hint { margin: 14px 0 0; padding: 10px 12px; border-radius: 8px; background: var(--bg); color: var(--muted); font-size: .9rem; }
details.card .status-grid { margin: 12px 0 4px; }
input[type=url] {
  display: block; width: 100%; margin-top: 4px;
  padding: 8px 10px; font: inherit; color: var(--text);
  background: var(--input); border: 1px solid var(--border); border-radius: 6px;
}
button.ghost { background: transparent; }
button:disabled { opacity: .6; cursor: default; }

.status-grid {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 12px;
}
.dot { display: inline-block; width: 9px; height: 9px; border-radius: 50%; background: var(--muted); margin-right: 6px; }
.dot.ok { background: var(--ok); }
.dot.bad { background: var(--bad); }

.savebar {
  position: fixed; left: 0; right: 0; bottom: 0;
  display: flex; justify-content: flex-end; align-items: center; gap: 12px;
  padding: 12px 16px; background: var(--card); border-top: 1px solid var(--border);
}

.login { min-height: 100vh; display: grid; place-items: center; padding: 16px; }
.login-card { width: 100%; max-width: 380px; }
.login-card h1 { margin-bottom: 8px; }
.login-card button { width: 100%; margin-top: 14px; }

.toast {
  position: fixed; left: 50%; bottom: 76px; transform: translateX(-50%);
  max-width: calc(100% - 32px); padding: 10px 16px; border-radius: 8px;
  background: var(--text); color: var(--bg); box-shadow: 0 4px 16px rgba(0,0,0,.25);
}
.toast.bad { background: var(--bad); color: #fff; }