:root {
  --paper: #f6f1e8;
  --paper-strong: #efe6d8;
  --panel: rgba(255,255,255,0.62);
  --panel-solid: #fffdf8;
  --ink: #183247;
  --ink-soft: #4a6274;
  --line: #cbbda8;
  --navy: #183247;
  --blue: #274c67;
  --teal: #4f7c7a;
  --green: #5d7f48;
  --amber: #a56b17;
  --rose: #a14656;
  --violet: #7d5bb6;
  --shadow: 0 20px 50px rgba(24, 50, 71, 0.10);
}

* { box-sizing: border-box; }

body {
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(circle at top left, rgba(255,255,255,0.75), transparent 38%),
    linear-gradient(180deg, #f8f4ec 0%, #f2ebdd 100%);
  font-family: "Avenir Next", "Helvetica Neue", sans-serif;
}

a { color: inherit; }

.app-shell {
  min-height: 100vh;
  display: grid;
  grid-template-columns: 18rem minmax(0, 1fr);
  gap: 1.4rem;
  align-items: start;
  max-width: 1700px;
  margin: 0 auto;
  padding: 2rem;
}

.app-header {
  grid-column: 1 / -1;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1.55rem 1.75rem;
  border: 1px solid var(--line);
  border-radius: 28px;
  background:
    linear-gradient(135deg, rgba(24,50,71,0.98), rgba(36,72,93,0.94)),
    linear-gradient(180deg, rgba(255,255,255,0.08), rgba(255,255,255,0));
  color: #f7f3ed;
  box-shadow: var(--shadow);
}

h1 {
  margin: 0;
  font-family: "Iowan Old Style", "Palatino Linotype", serif;
  font-size: clamp(1.8rem, 3vw, 3rem);
  line-height: 1;
  font-weight: 600;
  letter-spacing: 0.01em;
}

.top-actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  color: rgba(247,243,237,0.8);
  font-size: 0.86rem;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.top-actions a {
  color: #f7f3ed;
  text-decoration: none;
  font-weight: 500;
}

.system-sidebar {
  border: 1px solid var(--line);
  border-radius: 18px;
  background: var(--panel);
  padding: 1.1rem;
  box-shadow: var(--shadow);
  overflow: auto;
  position: sticky;
  top: 1rem;
  max-height: calc(100vh - 2rem);
}

.systems-title,
.panel-title {
  margin: 0 0 0.65rem;
  color: var(--ink-soft);
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.16em;
}

.system-list {
  display: grid;
  gap: 0.55rem;
}

.system-button {
  display: block;
  width: 100%;
  padding: 0.82rem 0.85rem;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: rgba(255,255,255,0.54);
  text-align: left;
  text-decoration: none;
  box-shadow: 0 1px 0 rgba(24, 50, 71, 0.04);
}

.system-button.active {
  border-color: var(--navy);
  background: rgba(24,50,71,0.94);
  color: #f7f3ed;
}

.system-name {
  display: block;
  font-weight: 500;
  line-height: 1.25;
}

.system-meta {
  display: block;
  margin-top: 0.35rem;
  color: var(--ink-soft);
  font-size: 0.78rem;
}

.system-button.active .system-meta {
  color: rgba(247,243,237,0.74);
}

.explorer-main {
  min-width: 0;
}

.query-panel {
  display: grid;
  gap: 0.75rem;
  padding: 1.15rem;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: var(--panel);
  box-shadow: var(--shadow);
}

.query-row {
  display: grid;
  grid-template-columns: minmax(14rem, 1fr) auto;
  gap: 0.75rem;
  align-items: center;
}

input[type="search"] {
  width: 100%;
  min-height: 2.55rem;
  padding: 0.55rem 0.75rem;
  border: 1px solid var(--line);
  border-radius: 10px;
  color: var(--ink);
  font: inherit;
  background: rgba(255,255,255,0.68);
}

.kind-filter {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

.kind-filter button,
.dialog-actions button {
  min-height: 2.25rem;
  padding: 0 0.7rem;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: rgba(255,255,255,0.54);
  color: var(--ink);
  font: inherit;
  font-weight: 500;
  cursor: pointer;
}

.kind-filter button.active {
  border-color: var(--navy);
  background: var(--navy);
  color: #f7f3ed;
}

.summary-line {
  margin: 0;
  color: var(--ink-soft);
  font-size: 0.88rem;
}

.result-panel {
  margin-top: 1rem;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: var(--panel-solid);
  overflow: auto;
  box-shadow: var(--shadow);
}

table {
  width: 100%;
  border-collapse: collapse;
}

th,
td {
  padding: 0.72rem 0.85rem;
  border-bottom: 1px solid var(--line);
  text-align: left;
  vertical-align: top;
  font-size: 0.9rem;
}

th {
  background: rgba(239,230,216,0.66);
  color: var(--ink-soft);
  font-size: 0.75rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

tbody tr:hover {
  background: rgba(239,230,216,0.28);
}

.object-link {
  color: var(--navy);
  font-weight: 500;
  text-decoration: none;
}

.detail-item .object-link,
.mini-table .object-link {
  color: var(--navy);
}

.relation-arrow {
  color: var(--ink-soft);
  font-weight: 500;
}

.object-key {
  display: block;
  margin-top: 0.25rem;
  color: var(--ink-soft);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.76rem;
  overflow-wrap: anywhere;
}

.badge {
  display: inline-flex;
  align-items: center;
  min-height: 1.45rem;
  padding: 0 0.45rem;
  border-radius: 999px;
  color: #ffffff;
  font-size: 0.75rem;
  font-weight: 500;
  white-space: nowrap;
}

.badge.system { background: var(--blue); }
.badge.subsystem { background: var(--teal); }
.badge.component { background: var(--green); }
.badge.relation { background: var(--amber); }
.badge.batch { background: var(--violet); }
.badge.sensor { background: var(--rose); }

dialog {
  width: min(860px, calc(100vw - 2rem));
  max-height: min(780px, calc(100vh - 2rem));
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 0;
  color: var(--ink);
  background: var(--panel-solid);
  box-shadow: 0 24px 80px rgba(24, 50, 71, 0.30);
}

dialog:focus {
  outline: none;
}

dialog::backdrop {
  background: rgba(24, 50, 71, 0.44);
}

.dialog-shell {
  display: grid;
  grid-template-rows: auto minmax(0, 1fr) auto;
  max-height: inherit;
}

.dialog-head,
.dialog-actions {
  padding: 1rem;
  border-bottom: 1px solid var(--line);
  background: rgba(239,230,216,0.54);
}

.dialog-actions {
  border-top: 1px solid var(--line);
  border-bottom: 0;
  display: flex;
  justify-content: flex-end;
  gap: 0.5rem;
}

.dialog-title {
  margin: 0.45rem 0 0;
  font-family: "Iowan Old Style", "Palatino Linotype", serif;
  font-size: 1.35rem;
  line-height: 1.2;
  font-weight: 600;
}

.dialog-body {
  overflow: auto;
  padding: 1rem;
  display: grid;
  gap: 1rem;
}

.detail-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.65rem;
}

.detail-item {
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 0.65rem;
  background: rgba(255,255,255,0.58);
}

.detail-item span {
  display: block;
  color: var(--ink-soft);
  font-size: 0.72rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.detail-item code,
code {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.83rem;
  overflow-wrap: anywhere;
}

.dialog-section h3 {
  margin: 0 0 0.45rem;
  font-size: 0.92rem;
}

.dialog-section p {
  margin: 0;
  color: var(--ink-soft);
  line-height: 1.45;
}

.mini-table th,
.mini-table td {
  font-size: 0.83rem;
  padding: 0.55rem;
}

.empty-state {
  padding: 1.4rem;
  color: var(--ink-soft);
}

/* DUNE/SURF operations-console theme for the dense explorer. */
:root {
  --dune-space: #071421;
  --dune-cavern: #0d2233;
  --dune-panel: rgba(9, 26, 40, 0.86);
  --dune-panel-strong: rgba(12, 34, 51, 0.96);
  --dune-line: rgba(126, 211, 236, 0.32);
  --dune-beam: #43c6f0;
  --dune-beam-soft: #a5edff;
  --dune-gold: #f1b744;
  --dune-copper: #bd6f33;
  --dune-ink: #edf8ff;
  --dune-muted: #a9c4d1;
}

body {
  color: var(--dune-ink);
  background:
    linear-gradient(112deg, transparent 0 46%, rgba(67,198,240,0.18) 46.2%, rgba(67,198,240,0.05) 47.5%, transparent 48.2%),
    repeating-linear-gradient(180deg, rgba(241,183,68,0.055) 0 1px, transparent 1px 48px),
    linear-gradient(180deg, #050c15 0%, var(--dune-space) 44%, #1c1712 100%);
}

a {
  text-underline-offset: 0.16em;
}

.app-shell {
  grid-template-columns: 15rem minmax(0, 1fr);
  gap: clamp(1rem, 2vw, 1.8rem);
  max-width: 1620px;
  padding: clamp(1rem, 2.8vw, 3rem);
}

.app-header {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--dune-line);
  border-top: 4px solid var(--dune-gold);
  border-radius: 6px;
  background:
    linear-gradient(135deg, rgba(7,20,33,0.98), rgba(12,37,56,0.92) 58%, rgba(54,35,19,0.86)),
    linear-gradient(90deg, rgba(67,198,240,0.2), transparent 42%);
  color: var(--dune-ink);
  box-shadow: 0 22px 70px rgba(0, 0, 0, 0.26);
  padding: 1rem 1.15rem;
}

.app-header::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--dune-gold), var(--dune-beam), transparent);
}

.brand-lockup {
  display: flex;
  align-items: center;
  gap: 1rem;
  min-width: 0;
}

.brand-lockup img {
  width: clamp(4.25rem, 9vw, 7.5rem);
  height: auto;
  flex: 0 0 auto;
  filter: drop-shadow(0 0 16px rgba(67,198,240,0.24));
}

.eyebrow {
  margin: 0 0 0.3rem;
  color: var(--dune-gold);
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.15em;
  text-transform: uppercase;
}

h1 {
  color: var(--dune-ink);
  font-family: "Avenir Next Condensed", "Avenir Next", "Helvetica Neue", sans-serif;
  font-size: clamp(2rem, 4vw, 4.6rem);
  font-weight: 800;
  letter-spacing: 0;
}

.top-actions {
  color: var(--dune-muted);
  font-weight: 700;
}

.top-actions a {
  color: var(--dune-beam-soft);
  text-decoration-color: rgba(165,237,255,0.55);
}

.system-sidebar,
.query-panel,
.result-panel,
.system-button,
input[type="search"],
.kind-filter button,
.dialog-actions button,
dialog,
.detail-item {
  border-radius: 6px;
  box-shadow: none;
}

.system-sidebar {
  border: 1px solid var(--dune-line);
  border-left: 3px solid var(--dune-gold);
  background: var(--dune-panel);
  padding: 1rem;
}

.systems-title,
.panel-title,
.detail-item span,
.dialog-section h3 {
  color: var(--dune-gold);
}

.system-button {
  border-color: rgba(126,211,236,0.24);
  background: rgba(255,255,255,0.045);
  color: var(--dune-ink);
}

.system-button.active {
  border-color: var(--dune-beam);
  background: linear-gradient(135deg, rgba(67,198,240,0.24), rgba(241,183,68,0.16));
  color: var(--dune-ink);
}

.system-meta,
.summary-line,
.object-key,
.dialog-section p {
  color: var(--dune-muted);
}

.query-panel,
.result-panel {
  border-color: var(--dune-line);
  background: var(--dune-panel);
}

input[type="search"],
.kind-filter button,
.dialog-actions button {
  border-color: rgba(126,211,236,0.28);
  background: rgba(255,255,255,0.06);
  color: var(--dune-ink);
}

input[type="search"]::placeholder {
  color: rgba(169,196,209,0.72);
}

.kind-filter button.active,
.dialog-actions button:hover {
  border-color: var(--dune-beam);
  background: var(--dune-beam);
  color: #06111b;
}

th {
  background: rgba(67,198,240,0.11);
  color: var(--dune-beam-soft);
  border-bottom-color: rgba(126,211,236,0.28);
}

td {
  border-bottom-color: rgba(126,211,236,0.18);
}

tbody tr:hover {
  background: rgba(67,198,240,0.075);
}

.object-link,
.detail-item .object-link,
.mini-table .object-link {
  color: var(--dune-beam-soft);
}

.badge.system { background: #0b4568; }
.badge.subsystem { background: #247b76; }
.badge.component { background: #3b865f; }
.badge.relation { background: #a86f18; }
.badge.batch { background: #765aa8; }
.badge.sensor { background: #a94a62; }

dialog {
  border-color: var(--dune-line);
  color: var(--dune-ink);
  background: var(--dune-panel-strong);
  box-shadow: 0 24px 90px rgba(0, 0, 0, 0.46);
}

dialog::backdrop {
  background: rgba(2, 8, 14, 0.72);
}

.dialog-head,
.dialog-actions {
  border-color: rgba(126,211,236,0.22);
  background: rgba(7,20,33,0.9);
}

.dialog-title {
  color: var(--dune-ink);
}

.detail-item {
  border-color: rgba(126,211,236,0.24);
  background: rgba(255,255,255,0.045);
}

.mini-table th,
.mini-table td {
  border-bottom-color: rgba(126,211,236,0.18);
}

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

@media (max-width: 860px) {
  .app-shell {
    display: block;
    padding: 1rem;
  }

  .app-header {
    align-items: flex-start;
    flex-direction: column;
  }

  .brand-lockup {
    align-items: flex-start;
    flex-direction: column;
  }

  .system-sidebar {
    position: static;
    max-height: none;
    margin-top: 1rem;
    margin-bottom: 1rem;
  }

  .system-list {
    grid-template-columns: repeat(auto-fit, minmax(14rem, 1fr));
  }

  .query-row,
  .detail-grid {
    grid-template-columns: 1fr;
  }
}