:root {
  --bg: #0e1116;
  --panel: #161b22;
  --panel-2: #1c2330;
  --border: #2a3140;
  --text: #e6edf3;
  --muted: #8b95a5;
  --primary: #2f81f7;
  --success: #2ea043;
  --danger: #e5484d;
  --radius: 10px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 14px/1.5 -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

.muted { color: var(--muted); }
.small { font-size: 12px; }
.hidden { display: none !important; }
.spacer { flex: 1; }
.mt { margin-top: 14px; }
.row { display: flex; align-items: center; }
.gap { gap: 8px; }
.wrap { flex-wrap: wrap; }

/* ---- login ---- */
.login-body {
  display: flex; align-items: center; justify-content: center;
  min-height: 100vh;
}
.login-card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px;
  width: 320px;
  display: flex; flex-direction: column; gap: 12px;
}
.login-card h1 { margin: 0; font-size: 22px; }
.login-card p { margin: 0 0 8px; }
.login-error {
  color: var(--danger);
  font-size: 13px;
}

/* ---- topbar ---- */
.topbar {
  display: flex; align-items: center; gap: 12px;
  padding: 10px 18px;
  background: var(--panel);
  border-bottom: 1px solid var(--border);
}
.logo { font-weight: 700; font-size: 16px; }

/* ---- layout ---- */
.layout {
  display: grid;
  grid-template-columns: 300px 1fr 360px;
  gap: 14px;
  padding: 14px;
  align-items: start;
}
.col-left, .col-center, .col-right {
  display: flex; flex-direction: column; gap: 14px;
}

.panel {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 14px;
}
.panel-head {
  display: flex; align-items: center; justify-content: space-between;
  margin-bottom: 10px;
}
.panel-head h2 { margin: 0; font-size: 14px; text-transform: uppercase; letter-spacing: .5px; color: var(--muted); }

/* ---- inputs ---- */
input[type=text], input[type=password], textarea, select {
  width: 100%;
  background: var(--panel-2);
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: 8px;
  padding: 8px 10px;
  font: inherit;
}
textarea { resize: vertical; }
input[type=file] { color: var(--muted); font-size: 12px; }
.field-label { display: block; font-size: 12px; color: var(--muted); margin: 10px 0 4px; }

/* ---- buttons ---- */
.btn {
  background: var(--panel-2);
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: 8px;
  padding: 8px 14px;
  cursor: pointer;
  font: inherit;
}
.btn:hover { border-color: var(--primary); }
.btn.small { padding: 5px 10px; font-size: 12px; }
.btn.ghost { background: transparent; }
.btn.primary { background: var(--primary); border-color: var(--primary); color: #fff; }
.btn.success { background: var(--success); border-color: var(--success); color: #fff; }
.btn.danger  { background: var(--danger);  border-color: var(--danger);  color: #fff; }
a.btn { text-decoration: none; display: inline-block; }

/* ---- lists ---- */
.list { display: flex; flex-direction: column; gap: 6px; }
.list-item {
  background: var(--panel-2);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 8px 10px;
  cursor: pointer;
}
.list-item:hover { border-color: var(--primary); }
.list-item.active { border-color: var(--primary); }
.list-item .title { font-weight: 600; }
.list-item .sub { font-size: 12px; color: var(--muted); }
.list-item .actions-row { display: flex; gap: 6px; margin-top: 6px; }

.channel-form { display: flex; flex-direction: column; gap: 6px; margin-bottom: 10px; }

/* ---- badges ---- */
.badge {
  font-size: 11px; padding: 2px 8px; border-radius: 999px;
  border: 1px solid var(--border); color: var(--muted);
}
.badge.ok { color: var(--success); border-color: var(--success); }
.badge.bad { color: var(--danger); border-color: var(--danger); }
.badge.draft { color: var(--muted); }
.badge.sent { color: var(--success); border-color: var(--success); }
.badge.failed { color: var(--danger); border-color: var(--danger); }

/* ---- buttons builder ---- */
.btn-row {
  border: 1px dashed var(--border);
  border-radius: 8px;
  padding: 8px;
  margin-bottom: 8px;
}
.btn-row-head { display: flex; justify-content: space-between; margin-bottom: 6px; }
.btn-card {
  background: var(--panel-2);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 8px;
  margin-bottom: 6px;
  display: flex; flex-direction: column; gap: 6px;
}
.swatches { display: flex; gap: 6px; }
.swatch {
  width: 26px; height: 26px; border-radius: 6px; cursor: pointer;
  border: 2px solid transparent;
}
.swatch.primary { background: var(--primary); }
.swatch.success { background: var(--success); }
.swatch.danger  { background: var(--danger); }
.swatch.selected { border-color: #fff; }

/* ---- checks ---- */
.checks { display: flex; flex-direction: column; gap: 4px; }
.checks label { display: flex; align-items: center; gap: 8px; }
.checks input { width: auto; }

/* ---- actions ---- */
.actions { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 16px; }
.op-log { margin-top: 10px; font-size: 12px; }
.op-log .line { padding: 3px 0; }
.op-log .ok { color: var(--success); }
.op-log .err { color: var(--danger); }

/* ---- preview ---- */
.tg-preview {
  background: #17212b;
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 12px;
}
.pv-image { width: 100%; border-radius: 8px; margin-bottom: 8px; }
.pv-text { white-space: pre-wrap; word-break: break-word; }
.pv-buttons { display: flex; flex-direction: column; gap: 6px; margin-top: 10px; }
.pv-btn-row { display: flex; gap: 6px; }
.pv-btn {
  flex: 1; text-align: center; padding: 8px;
  border-radius: 8px; color: #fff; font-size: 13px;
  overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}
.pv-btn.primary { background: var(--primary); }
.pv-btn.success { background: var(--success); }
.pv-btn.danger  { background: var(--danger); }

/* ---- toast ---- */
.toast {
  position: fixed; bottom: 20px; left: 50%; transform: translateX(-50%);
  background: var(--panel-2); border: 1px solid var(--border);
  padding: 10px 18px; border-radius: 8px; z-index: 50;
}
.toast.ok { border-color: var(--success); }
.toast.err { border-color: var(--danger); }

@media (max-width: 1100px) {
  .layout { grid-template-columns: 1fr; }
}