:root {
  --bg: #0c1016;
  --navy: #0d1b2e;
  --graphite: #171e29;
  --card: rgba(16, 26, 40, 0.88);
  --line: rgba(156, 186, 224, 0.16);
  --text: #e8eef7;
  --muted: #96a6bb;
  --blue: #6eb6ff;
  --blue-deep: #1d4e86;
  --green: #3dce8e;
  --red: #ff6d7a;
  --amber: #e2b15a;
  --shadow: 0 22px 50px rgba(0, 0, 0, 0.32);
  --radius: 18px;
  --sidebar: 272px;
  --display: "Outfit", "Segoe UI Variable Display", "Segoe UI", sans-serif;
  --body: "Source Sans 3", "Segoe UI Variable Text", "Segoe UI", sans-serif;
  --mono: "Cascadia Mono", "Segoe UI Mono", ui-monospace, monospace;
}

* { box-sizing: border-box; }

html, body { margin: 0; min-height: 100%; }

body {
  font-family: var(--body);
  font-size: 17px;
  line-height: 1.5;
  color: var(--text);
  background:
    radial-gradient(1000px 480px at 10% -10%, rgba(47, 111, 196, 0.28), transparent 60%),
    radial-gradient(800px 420px at 100% 0%, rgba(24, 72, 112, 0.35), transparent 55%),
    var(--bg);
}

button, input { font: inherit; color: inherit; }

a { color: var(--blue); text-decoration-thickness: 1px; text-underline-offset: 0.18em; }

.skip {
  position: absolute;
  left: 12px;
  top: -40px;
  z-index: 5;
  background: var(--text);
  color: var(--bg);
  padding: 8px 12px;
  border-radius: 8px;
}

.skip:focus { top: 12px; }

.app { min-height: 100vh; }

.sidebar {
  position: fixed;
  inset: 0 auto 0 0;
  width: var(--sidebar);
  display: flex;
  flex-direction: column;
  padding: 16px 14px 12px;
  background: linear-gradient(180deg, rgba(13, 22, 36, 0.96), rgba(10, 14, 20, 0.96));
  border-right: 1px solid var(--line);
  z-index: 3;
}

.brand {
  display: flex;
  gap: 12px;
  align-items: center;
  color: inherit;
  text-decoration: none;
  padding: 2px 8px 10px;
}

.brand strong {
  display: block;
  font-family: var(--display);
  font-size: 1.25rem;
  letter-spacing: 0.08em;
}

.brand small {
  color: var(--muted);
  letter-spacing: 0.04em;
}

.mark {
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  border-radius: 12px;
  background: linear-gradient(160deg, #1a4f8c, #102033);
  border: 1px solid rgba(110, 182, 255, 0.45);
  font-family: var(--display);
  font-weight: 700;
  letter-spacing: -0.04em;
}

.side-nav {
  overflow: auto;
  min-height: 0;
  padding-right: 4px;
  display: grid;
  gap: 10px;
  align-content: start;
}

.nav-group h2 {
  margin: 0 8px 4px;
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
}

.nav-group a {
  display: block;
  margin: 1px 0;
  padding: 5px 12px;
  border-radius: 10px;
  color: var(--text);
  text-decoration: none;
}

.nav-group a:hover,
.nav-group a:focus-visible { background: rgba(110, 182, 255, 0.1); }

.nav-group a[aria-current="page"] {
  background: rgba(110, 182, 255, 0.16);
  color: white;
}

.side-note {
  margin: 16px 8px 0;
  color: var(--muted);
  font-size: 0.86rem;
}

.main {
  margin-left: var(--sidebar);
  min-height: 100vh;
}

.topbar {
  display: flex;
  align-items: center;
  gap: 16px;
  min-height: 72px;
  padding: 0 28px;
  border-bottom: 1px solid transparent;
}

.topbar-title {
  margin: 0;
  font-family: var(--display);
  letter-spacing: 0.12em;
  font-size: 0.92rem;
}

.topbar-title span {
  letter-spacing: 0.04em;
  color: var(--muted);
  font-weight: 500;
}

.topbar-brand {
  margin: 0 0 0 auto;
  color: var(--muted);
  font-size: 0.92rem;
}

.nav-toggle {
  display: none;
  align-items: center;
  gap: 8px;
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.03);
  border-radius: 999px;
  padding: 8px 12px;
  cursor: pointer;
}

.nav-toggle-lines {
  width: 16px;
  height: 10px;
  border-top: 2px solid var(--text);
  border-bottom: 2px solid var(--text);
}

.overlay { display: none; }

#view {
  padding: 12px 32px 48px;
  max-width: 1120px;
  outline: none;
}

.view-in { animation: rise 0.38s ease; }

@keyframes rise {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: none; }
}

.page-head { margin-bottom: 22px; max-width: 740px; }

.kicker {
  margin: 0 0 8px;
  color: var(--blue);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  font-size: 0.75rem;
  font-weight: 600;
}

h1, h2, h3 { font-family: var(--display); font-weight: 600; letter-spacing: -0.02em; }

h1 { margin: 0 0 10px; font-size: clamp(2.1rem, 4vw, 3.4rem); line-height: 1.05; }

h2 { margin: 0 0 8px; font-size: 1.35rem; }

h3 { margin: 0 0 6px; font-size: 1.05rem; }

.lead, .muted { color: var(--muted); }

.lead { margin: 0; font-size: 1.12rem; }

.hero {
  display: grid;
  grid-template-columns: 1.3fr 0.8fr;
  gap: 22px;
  align-items: stretch;
  margin-bottom: 22px;
}

.hero-copy, .card, .kpi, .platform, .notice {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.hero-copy { padding: 32px; }

.hero-copy h1 {
  max-width: 12em;
}

.engine-card h2 { margin-bottom: 0; }

.engine-version {
  margin: 8px 0 0;
  color: var(--blue);
  font-family: var(--display);
  letter-spacing: 0.08em;
}

.actions { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 22px; }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 16px;
  border-radius: 999px;
  border: 1px solid transparent;
  text-decoration: none;
  cursor: pointer;
  transition: transform 0.18s ease, border-color 0.18s ease, background 0.18s ease;
}

.btn-primary { background: linear-gradient(180deg, #3d8dff, #1f62c8); color: white; }

.btn-ghost { background: transparent; border-color: var(--line); color: var(--text); }

.btn:hover { transform: translateY(-1px); }

.btn:disabled, .btn[aria-disabled="true"] {
  cursor: not-allowed;
  transform: none;
  color: var(--muted);
  background: rgba(255, 255, 255, 0.04);
  border-color: var(--line);
}

.status-stack { display: grid; gap: 12px; }

.status-stack article, .kpi, .card, .platform, .notice { padding: 18px 18px 16px; }

.grid-3, .grid-2, .kpi-row { display: grid; gap: 14px; margin: 14px 0; }

.kpi-row, .grid-3 { grid-template-columns: repeat(3, 1fr); }

.grid-2 { grid-template-columns: 1fr 1fr; }

.kpi-label, .platform-kicker {
  margin: 0 0 8px;
  color: var(--muted);
  font-size: 0.82rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.kpi-value {
  margin: 0;
  font-family: var(--display);
  font-size: 1.7rem;
  letter-spacing: -0.03em;
}

.kpi-value.is-ok { color: var(--green); }

.kpi-note, .card p, .platform p, .notice p { margin: 8px 0 0; color: var(--muted); }

.badge {
  display: inline-flex;
  align-items: center;
  min-height: 26px;
  padding: 0 10px;
  border-radius: 999px;
  font-size: 0.78rem;
  letter-spacing: 0.04em;
  border: 1px solid transparent;
}

.badge-wait { color: #f3d7a1; background: rgba(226, 177, 90, 0.12); border-color: rgba(226, 177, 90, 0.35); }

.badge-live { color: #b9f3d6; background: rgba(61, 206, 142, 0.12); border-color: rgba(61, 206, 142, 0.35); }

.badge-off { color: #ffc2c8; background: rgba(255, 109, 122, 0.12); border-color: rgba(255, 109, 122, 0.32); }

.section-title { margin: 28px 0 12px; }

.table-wrap { overflow-x: auto; border: 1px solid var(--line); border-radius: 14px; }

table { width: 100%; border-collapse: collapse; min-width: 520px; }

th, td { text-align: left; padding: 12px 14px; border-bottom: 1px solid var(--line); }

th { color: var(--muted); font-weight: 600; font-size: 0.82rem; letter-spacing: 0.06em; text-transform: uppercase; }

.empty-row { color: var(--muted); }

.chart {
  width: 100%;
  height: auto;
  display: block;
  background: linear-gradient(180deg, rgba(13, 27, 46, 0.4), rgba(8, 12, 18, 0.2));
  border-radius: 12px;
}

.mono, code {
  font-family: var(--mono);
  font-size: 0.86rem;
}

.endpoint-list { list-style: none; padding: 0; margin: 12px 0 0; display: grid; gap: 6px; }

.endpoint-list li {
  padding: 8px 10px;
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.03);
}

.form { display: grid; gap: 12px; max-width: 460px; }

label { display: grid; gap: 6px; color: var(--muted); font-size: 0.92rem; }

input {
  min-height: 46px;
  padding: 0 12px;
  border-radius: 12px;
  border: 1px solid var(--line);
  background: rgba(6, 10, 16, 0.55);
}

input:focus { outline: 2px solid rgba(110, 182, 255, 0.7); outline-offset: 1px; }

.login-layout { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; align-items: start; }

.steps { margin: 8px 0 0; padding-left: 18px; color: var(--muted); }

.steps li + li { margin-top: 6px; }

.page-foot {
  margin-top: 28px;
  color: var(--muted);
  font-size: 0.88rem;
}

.split-title { display: flex; justify-content: space-between; gap: 12px; align-items: center; }

@media (max-width: 980px) {
  .sidebar { transform: translateX(-105%); transition: transform 0.22s ease; }
  .app.nav-open .sidebar { transform: none; }
  .app.nav-open .overlay {
    display: block;
    position: fixed;
    inset: 0;
    background: rgba(4, 8, 14, 0.72);
    z-index: 2;
  }
  .main { margin-left: 0; }
  .nav-toggle { display: inline-flex; flex-shrink: 0; }
  .topbar-title { white-space: nowrap; letter-spacing: 0.08em; }
  .topbar-title span { display: none; }
  .hero, .login-layout, .kpi-row, .grid-3, .grid-2 { grid-template-columns: 1fr; }
  #view { padding: 8px 16px 36px; }
  .topbar { padding: 0 16px; }
}

@media (prefers-reduced-motion: reduce) {
  .view-in { animation: none; }
  .btn, .sidebar { transition: none; }
  .btn:hover { transform: none; }
}