:root {
  --bg: #07111f;
  --panel: #0d1b2e;
  --panel-2: #13243b;
  --border: rgba(255,255,255,.09);
  --text: #edf4ff;
  --muted: #95a6bd;
  --accent: #28d17c;
  --accent-2: #2fb4ff;
  --danger: #ff5e6c;
  --warning: #ffc857;
  --shadow: 0 18px 60px rgba(0,0,0,.35);
  --radius: 18px;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  min-height: 100vh;
  font-family: Inter, Segoe UI, Arial, sans-serif;
  background:
    radial-gradient(circle at top left, rgba(47,180,255,.22), transparent 28rem),
    radial-gradient(circle at bottom right, rgba(40,209,124,.14), transparent 30rem),
    var(--bg);
  color: var(--text);
}

.app-shell { display: flex; min-height: 100vh; }
.sidebar {
  width: 285px;
  padding: 22px;
  background: rgba(6,15,29,.82);
  border-right: 1px solid var(--border);
  backdrop-filter: blur(14px);
  display: flex;
  flex-direction: column;
  gap: 25px;
}
.brand { display: flex; align-items: center; gap: 13px; }
.brand-icon {
  width: 48px; height: 48px; border-radius: 14px;
  display: grid; place-items: center;
  font-weight: 900;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #04101d;
  box-shadow: 0 12px 35px rgba(47,180,255,.25);
}
.brand h1 { margin: 0; font-size: 22px; }
.brand span { color: var(--muted); font-size: 12px; }
nav { display: grid; gap: 9px; }
.nav-item {
  border: 1px solid transparent;
  background: transparent;
  color: var(--muted);
  text-align: left;
  padding: 13px 14px;
  border-radius: 13px;
  cursor: pointer;
  font-weight: 700;
}
.nav-item:hover, .nav-item.active {
  color: var(--text);
  background: rgba(255,255,255,.06);
  border-color: var(--border);
}
.sidebar-footer { margin-top: auto; color: var(--muted); display: grid; gap: 8px; }
code {
  color: #a7ffcb;
  background: rgba(255,255,255,.06);
  padding: 2px 6px;
  border-radius: 7px;
}
.content { flex: 1; padding: 28px; overflow: auto; }
.topbar {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 18px;
  margin-bottom: 24px;
}
.topbar h2 { margin: 0 0 6px; font-size: 30px; }
.topbar p { margin: 0; color: var(--muted); }
.actions { display: flex; gap: 10px; align-items: center; }
.status-pill {
  padding: 9px 12px;
  border-radius: 999px;
  background: rgba(255,255,255,.07);
  color: var(--muted);
  border: 1px solid var(--border);
  font-size: 13px;
  white-space: nowrap;
}
.status-pill.ok { color: #9dffc6; border-color: rgba(40,209,124,.35); }
.status-pill.fail { color: #ffb3ba; border-color: rgba(255,94,108,.35); }
.screen { display: none; }
.screen.active { display: block; }
.cards-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(160px, 1fr));
  gap: 18px;
  margin-bottom: 18px;
}
.metric-card, .panel {
  background: linear-gradient(180deg, rgba(19,36,59,.88), rgba(13,27,46,.9));
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}
.metric-card { padding: 20px; display: grid; gap: 10px; }
.metric-card span { color: var(--muted); }
.metric-card strong { font-size: 36px; }
.panel { padding: 20px; margin-bottom: 18px; }
.panel h3 { margin: 0 0 13px; }
.panel-header { display: flex; justify-content: space-between; align-items: center; gap: 12px; margin-bottom: 12px; }
.panel-header h3 { margin: 0; }
.two-cols { display: grid; grid-template-columns: 1.2fr 1fr; gap: 18px; }
.split { display: grid; grid-template-columns: minmax(280px, .8fr) minmax(420px, 1.2fr); gap: 18px; align-items: start; }
.btn {
  border: 0;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #03101c;
  font-weight: 900;
  padding: 12px 16px;
  border-radius: 12px;
  cursor: pointer;
  box-shadow: 0 10px 25px rgba(47,180,255,.18);
}
.btn:hover { filter: brightness(1.08); }
.btn.secondary {
  background: rgba(255,255,255,.08);
  color: var(--text);
  border: 1px solid var(--border);
  box-shadow: none;
}
.btn.danger { background: var(--danger); color: white; }
.btn.small { padding: 8px 11px; font-size: 12px; }
.steps { color: var(--muted); line-height: 1.8; padding-left: 22px; }
.list { display: grid; gap: 10px; }
.empty { color: var(--muted); }
.item {
  border: 1px solid var(--border);
  background: rgba(255,255,255,.045);
  border-radius: 14px;
  padding: 14px;
}
.item.selected { border-color: rgba(47,180,255,.55); background: rgba(47,180,255,.08); }
.item-head { display: flex; justify-content: space-between; gap: 12px; align-items: start; }
.item-title { font-weight: 900; }
.item-meta { color: var(--muted); font-size: 12px; margin-top: 6px; word-break: break-all; }
.item-actions { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 12px; }
.badge {
  display: inline-flex; align-items: center;
  padding: 4px 8px; border-radius: 999px;
  background: rgba(255,255,255,.08);
  border: 1px solid var(--border);
  font-size: 12px;
  color: var(--muted);
}
.badge.get { color: #9dffc6; }
.badge.post { color: #9fd4ff; }
.badge.err { color: #ffb3ba; }
.form-grid { display: grid; grid-template-columns: 1fr 180px; gap: 13px; align-items: end; }
.form-grid .full { grid-column: 1 / -1; }
label { display: grid; gap: 7px; color: var(--muted); font-size: 13px; font-weight: 700; }
input, select, textarea {
  width: 100%;
  border: 1px solid var(--border);
  background: rgba(5,12,23,.7);
  color: var(--text);
  border-radius: 12px;
  padding: 12px;
  outline: none;
}
textarea { font-family: ui-monospace, SFMono-Regular, Consolas, monospace; }
input:focus, select:focus, textarea:focus { border-color: rgba(47,180,255,.6); }
.result-box {
  white-space: pre-wrap;
  word-break: break-word;
  background: rgba(0,0,0,.25);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 15px;
  min-height: 150px;
  max-height: 460px;
  overflow: auto;
  color: #daf2ff;
}
.warning {
  border: 1px solid rgba(255,200,87,.35);
  background: rgba(255,200,87,.08);
  color: #ffe5a3;
  border-radius: 14px;
  padding: 14px;
  margin-top: 12px;
}
.muted { color: var(--muted); }
.toast {
  position: fixed;
  bottom: 22px;
  right: 22px;
  max-width: 360px;
  background: #0b1828;
  color: var(--text);
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  border-radius: 14px;
  padding: 13px 15px;
  opacity: 0;
  pointer-events: none;
  transform: translateY(12px);
  transition: .2s ease;
}
.toast.show { opacity: 1; transform: translateY(0); }
@media (max-width: 980px) {
  .app-shell { flex-direction: column; }
  .sidebar { width: 100%; }
  .cards-grid { grid-template-columns: repeat(2, 1fr); }
  .split, .two-cols { grid-template-columns: 1fr; }
  .topbar { flex-direction: column; }
}
@media (max-width: 560px) {
  .content { padding: 18px; }
  .cards-grid, .form-grid { grid-template-columns: 1fr; }
}