:root {
  --bg: #06101d;
  --bg-soft: #0b1829;
  --panel: rgba(13, 29, 48, .88);
  --panel-deep: rgba(6, 17, 31, .92);
  --line: #263b52;
  --text: #f3f7fb;
  --muted: #9aabbd;
  --accent: #72dfb4;
  --accent-dark: #153d39;
  --warn: #f7b56b;
  --bad: #ff7783;
  --topbar-height: 82px;
}

* { box-sizing: border-box; }
html { min-height: 100%; background: var(--bg); }
body {
  min-height: 100vh;
  margin: 0;
  color: var(--text);
  font: 15px/1.5 Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background:
    radial-gradient(circle at 15% 0%, rgba(66, 182, 153, .13), transparent 31rem),
    radial-gradient(circle at 95% 100%, rgba(63, 117, 170, .16), transparent 34rem), var(--bg);
}

button, input, select, textarea { font: inherit; }
button, .button {
  border: 1px solid transparent;
  border-radius: 10px;
  padding: 10px 15px;
  color: #07151b;
  background: var(--accent);
  font-weight: 750;
  text-decoration: none;
  cursor: pointer;
}
button:hover, .button:hover { filter: brightness(1.08); }
.secondary { border-color: var(--line); color: var(--text); background: rgba(8, 20, 35, .78); }
.danger { border-color: #7c3442; color: #fff; background: #8f3545; }
.hidden, [hidden] { display: none !important; }
.muted, .cache-meta { color: var(--muted); }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0, 0, 0, 0); }

.topbar {
  position: sticky;
  z-index: 10;
  top: 0;
  min-height: var(--topbar-height);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 24px;
  padding: 12px 4vw;
  border-bottom: 1px solid var(--line);
  background: rgba(9, 28, 47, .94);
  backdrop-filter: blur(18px);
}
.topbar-brand, .session-strip, .inline-form, .button-row { display: flex; align-items: center; gap: 12px; }
.topbar h1 { margin: 0; font-size: clamp(24px, 2.2vw, 34px); line-height: 1.05; }
.eyebrow {
  margin: 0 0 5px;
  color: var(--accent);
  font-size: 12px;
  font-weight: 850;
  letter-spacing: .18em;
}
.nav-toggle { min-width: 126px; }
.session-strip { justify-content: flex-end; flex-wrap: wrap; }
.inline-form input { width: min(260px, 24vw); }

input, select, textarea {
  width: 100%;
  min-height: 42px;
  border: 1px solid var(--line);
  border-radius: 9px;
  padding: 9px 11px;
  color: var(--text);
  background: rgba(3, 13, 25, .92);
}
textarea { min-height: 96px; resize: vertical; }
input:focus, select:focus, textarea:focus { outline: 2px solid rgba(114, 223, 180, .4); }

.notice {
  position: fixed;
  z-index: 20;
  right: 24px;
  top: calc(var(--topbar-height) + 14px);
  max-width: 520px;
  border: 1px solid #2f735f;
  border-radius: 10px;
  padding: 12px 16px;
  background: #103a31;
  box-shadow: 0 12px 30px #0008;
}
.notice.error { border-color: #8b3d4a; background: #421f2a; }

.operator-layout {
  display: grid;
  grid-template-columns: 288px minmax(0, 1fr);
  gap: 30px;
  max-width: 1540px;
  min-height: calc(100vh - var(--topbar-height) - 72px);
  margin: 0 auto;
  padding: 16px 4vw 40px;
}
.operator-sidebar {
  position: sticky;
  top: calc(var(--topbar-height) + 16px);
  max-height: calc(100vh - var(--topbar-height) - 32px);
  overflow: auto;
  border: 1px solid #57404a;
  border-radius: 16px;
  background: linear-gradient(145deg, rgba(52, 29, 38, .76), rgba(11, 20, 34, .92));
}
.operator-sidebar.collapsed { display: none; }
.operator-layout:has(.operator-sidebar.collapsed) { grid-template-columns: 1fr; }
.nav-group { padding: 9px 12px; border-bottom: 1px solid rgba(100, 74, 82, .4); }
.nav-group:last-child { border: 0; }
.nav-group summary {
  display: flex;
  justify-content: space-between;
  padding: 9px 7px;
  color: #d9bdc4;
  font-size: 12px;
  font-weight: 850;
  letter-spacing: .13em;
  text-transform: uppercase;
  cursor: pointer;
  list-style: none;
}
.nav-submenu { display: grid; gap: 4px; padding: 4px 0; }
.nav-item {
  width: 100%;
  border-color: transparent;
  padding: 9px 11px;
  color: var(--text);
  background: transparent;
  text-align: left;
}
.nav-item.active { border-color: #825a66; background: rgba(119, 73, 86, .32); box-shadow: inset 3px 0 var(--warn); }
.operator-content {
  min-width: 0;
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: clamp(20px, 2.2vw, 32px);
  background: rgba(10, 26, 44, .74);
  box-shadow: 0 18px 50px rgba(0, 0, 0, .18);
}
.breadcrumb { margin: 0 0 20px; color: var(--muted); font-size: 13px; }
.route-view { display: none; }
.route-view.active { display: block; }
.signed-out .route-view { opacity: .42; pointer-events: none; }
.signin-panel { border: 1px solid var(--line); border-radius: 14px; padding: 24px; background: var(--panel); }