:root {
  color-scheme: light;
  --bg: #f3f6f8;
  --panel: #ffffff;
  --ink: #172026;
  --muted: #65727d;
  --line: #d8e0e6;
  --accent: #176b87;
  --accent-strong: #0f4d62;
  --soft: #e9f3f6;
  --warn: #9f3f20;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
}

button, .button, input, textarea, select {
  font: inherit;
}

button, .button {
  border: 0;
  border-radius: 6px;
  background: var(--accent);
  color: white;
  padding: 0.7rem 0.95rem;
  cursor: pointer;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 42px;
}

button:hover, .button:hover { background: var(--accent-strong); }
.ghost {
  background: transparent;
  color: var(--accent-strong);
  border: 1px solid var(--line);
}
.ghost:hover { background: var(--soft); }
.danger {
  color: var(--warn);
}

.hidden { display: none !important; }
.eyebrow {
  margin: 0 0 0.35rem;
  color: var(--muted);
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0;
}

.login {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 1rem;
}
.login-panel {
  width: min(420px, 100%);
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 2rem;
}
.login-panel h1 { margin: 0 0 1.5rem; }

.shell {
  min-height: 100vh;
  display: grid;
  grid-template-columns: 260px minmax(0, 1fr);
}
.sidebar {
  background: #e8eef2;
  border-right: 1px solid var(--line);
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  position: sticky;
  top: 0;
  height: 100vh;
}
.sidebar h2 {
  margin: 0;
  font-size: 1.15rem;
}
nav {
  display: grid;
  gap: 0.35rem;
}
.nav-button {
  justify-content: flex-start;
  background: transparent;
  color: var(--ink);
}
.nav-button.active {
  background: var(--accent);
  color: white;
}
.main {
  padding: 1.25rem;
  min-width: 0;
}
.topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1rem;
}
.topbar h1 { margin: 0; font-size: 1.55rem; }
.actions, .toolbar {
  display: flex;
  gap: 0.6rem;
  align-items: center;
  flex-wrap: wrap;
}

.metric-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.75rem;
}
.metric-grid article, .section-block, .editor-form, .list-item {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
}
.metric-grid article { padding: 1rem; }
.metric-grid span {
  display: block;
  font-size: 2rem;
  font-weight: 700;
}
.metric-grid p { margin: 0.25rem 0 0; color: var(--muted); }

.section-block, .editor-form {
  padding: 1rem;
  margin-top: 0.75rem;
}
.section-block h3 { margin: 0 0 0.75rem; }

label {
  display: grid;
  gap: 0.35rem;
  color: var(--muted);
  font-size: 0.9rem;
}
input, textarea, select {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: white;
  color: var(--ink);
  padding: 0.7rem;
}
textarea { resize: vertical; }
.form-row {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.75rem;
}
.editor-form {
  display: grid;
  gap: 0.75rem;
}
.form-message { color: var(--warn); min-height: 1.2rem; }

.list {
  display: grid;
  gap: 0.6rem;
  margin-top: 0.75rem;
}
.list-item {
  padding: 0.85rem;
  display: grid;
  gap: 0.35rem;
}
.list-item h3 {
  margin: 0;
  font-size: 1rem;
}
.list-item p {
  margin: 0;
  color: var(--muted);
}
.compact .list-item {
  grid-template-columns: 1fr auto;
  align-items: center;
}
.pill-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
}
.pill {
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 0.18rem 0.5rem;
  color: var(--muted);
  font-size: 0.78rem;
}

.panel-heading {
  display: flex;
  justify-content: space-between;
  gap: 0.75rem;
  align-items: flex-start;
  margin-bottom: 0.75rem;
}
.panel-heading h3 {
  margin: 0;
  font-size: 1rem;
}
.panel-heading p {
  margin: 0.2rem 0 0;
}
.muted-text {
  color: var(--muted);
  font-size: 0.88rem;
}

.storage-workspace {
  margin-top: 0.75rem;
  display: grid;
  grid-template-columns: 280px minmax(420px, 1fr) 320px;
  gap: 0.75rem;
  align-items: start;
}
.storage-tree-panel,
.storage-map-panel,
.storage-detail-panel {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 0.9rem;
  min-height: 420px;
}
.storage-tree {
  display: grid;
  gap: 0.35rem;
}
.tree-node {
  width: 100%;
  min-height: 46px;
  display: grid;
  grid-template-columns: 22px 1fr;
  grid-template-rows: auto auto;
  column-gap: 0.45rem;
  align-items: center;
  text-align: left;
  background: transparent;
  color: var(--ink);
  border: 1px solid transparent;
  padding: 0.45rem 0.5rem 0.45rem calc(0.5rem + var(--depth) * 1rem);
}
.tree-node span {
  grid-row: 1 / 3;
  color: var(--accent);
}
.tree-node strong {
  font-size: 0.9rem;
}
.tree-node small {
  color: var(--muted);
}
.tree-node.active {
  background: var(--soft);
  border-color: #bad5df;
}
.storage-grid-empty {
  min-height: 320px;
  border: 1px dashed var(--line);
  border-radius: 8px;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 0.55rem;
  align-content: start;
  padding: 0.75rem;
  color: var(--muted);
}
.child-location {
  min-height: 76px;
  background: #f8fafb;
  color: var(--ink);
  border: 1px solid var(--line);
  display: grid;
  gap: 0.25rem;
  justify-items: start;
}
.child-location span {
  color: var(--muted);
  font-size: 0.8rem;
}
.box-grid {
  display: grid;
  grid-template-columns: repeat(var(--columns), minmax(58px, 1fr));
  gap: 0.35rem;
  overflow-x: auto;
  padding-bottom: 0.35rem;
}
.slot-cell {
  min-width: 58px;
  aspect-ratio: 1 / 0.88;
  padding: 0.35rem;
  border: 1px solid var(--line);
  background: #f9fbfc;
  color: var(--ink);
  display: grid;
  align-content: space-between;
  justify-items: start;
  text-align: left;
}
.slot-cell:hover {
  background: var(--soft);
}
.slot-cell.occupied {
  border-color: #8bb8c8;
  background: #eaf5f8;
}
.slot-cell.depleted {
  border-color: #dfb2a8;
  background: #fff0ed;
}
.slot-cell.reserved {
  border-color: #ddc17e;
  background: #fff7df;
}
.slot-cell.child {
  border-color: #9fb7c4;
  background: #eef4f7;
}
.slot-cell.discarded {
  opacity: 0.58;
}
.slot-code {
  font-size: 0.74rem;
  color: var(--muted);
}
.slot-cell strong {
  max-width: 100%;
  font-size: 0.76rem;
  line-height: 1.15;
  overflow: hidden;
  text-overflow: ellipsis;
}
.slot-cell small {
  color: var(--muted);
  font-size: 0.72rem;
}
.slot-detail {
  display: grid;
  gap: 0.75rem;
}
.slot-badge {
  display: inline-flex;
  width: fit-content;
  border-radius: 999px;
  background: var(--soft);
  color: var(--accent-strong);
  padding: 0.25rem 0.55rem;
  font-size: 0.78rem;
}
.slot-record h4,
.empty-slot h4 {
  margin: 0.5rem 0 0.25rem;
}
.slot-record p,
.empty-slot p {
  margin: 0.25rem 0;
}
.movement-list {
  display: grid;
  gap: 0.55rem;
}
.mini-form {
  display: grid;
  gap: 0.45rem;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 0.65rem;
  background: #f8fafb;
}
.compact-row {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}
.movement-list article {
  border-top: 1px solid var(--line);
  padding-top: 0.55rem;
}
.movement-list p {
  margin: 0.2rem 0;
  color: var(--muted);
  font-size: 0.82rem;
}

@media (max-width: 860px) {
  .shell { grid-template-columns: 1fr; }
  .sidebar {
    position: static;
    height: auto;
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }
  nav {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
  .nav-button { justify-content: center; }
  .topbar { align-items: flex-start; flex-direction: column; }
  .metric-grid, .form-row { grid-template-columns: 1fr; }
  .main { padding: 0.85rem; }
  .storage-workspace {
    grid-template-columns: 1fr;
  }
  .storage-tree-panel,
  .storage-map-panel,
  .storage-detail-panel {
    min-height: auto;
  }
  .box-grid {
    grid-template-columns: repeat(var(--columns), minmax(48px, 1fr));
  }
}