:root {
  --brand-red: #e2231a;
  --brand-black: #1a1a1a;
  --brand-dark: #14161a;
  --sidebar-width: 250px;
  --sidebar-collapsed-width: 70px;
  --topbar-height: 56px;
  --content-bg: #f4f5f8;
  --card-radius: .6rem;
}

html, body {
  height: 100%;
}

body {
  background: var(--content-bg);
  font-family: "Segoe UI", -apple-system, BlinkMacSystemFont, Roboto, "Helvetica Neue", Arial, sans-serif;
  font-size: .875rem;
  overflow-x: hidden;
}

/* ---------- App Shell (full-screen layout) ---------- */
.app-shell {
  display: flex;
  min-height: 100vh;
  width: 100%;
}

.app-sidebar {
  width: var(--sidebar-width);
  min-width: var(--sidebar-width);
  background: linear-gradient(180deg, var(--brand-black) 0%, var(--brand-dark) 100%);
  color: #e9e9ec;
  display: flex;
  flex-direction: column;
  position: fixed;
  top: 0;
  bottom: 0;
  left: 0;
  z-index: 1030;
  transition: width .2s ease, min-width .2s ease;
}

.app-shell.collapsed .app-sidebar {
  width: var(--sidebar-collapsed-width);
  min-width: var(--sidebar-collapsed-width);
}

.app-shell.collapsed .sidebar-label,
.app-shell.collapsed .brand-text,
.app-shell.collapsed .nav-section-title {
  display: none;
}

.sidebar-brand {
  height: var(--topbar-height);
  display: flex;
  align-items: center;
  gap: .6rem;
  padding: 0 1rem;
  border-bottom: 1px solid rgba(255,255,255,.08);
  flex-shrink: 0;
}

.sidebar-brand img {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: #fff;
  object-fit: cover;
}

.brand-text {
  font-weight: 700;
  font-size: .95rem;
  color: #fff;
  line-height: 1.1;
  white-space: nowrap;
}

.brand-text small {
  display: block;
  font-weight: 400;
  font-size: .68rem;
  color: var(--brand-red);
  letter-spacing: .04em;
}

.sidebar-nav {
  flex: 1 1 auto;
  overflow-y: auto;
  padding: .5rem 0 1rem;
}

.nav-section-title {
  text-transform: uppercase;
  font-size: .65rem;
  letter-spacing: .07em;
  color: #7d8087;
  padding: .85rem 1rem .25rem;
  font-weight: 600;
}

.app-sidebar .nav-link {
  color: #c7c9d1;
  padding: .5rem 1rem;
  font-size: .82rem;
  display: flex;
  align-items: center;
  gap: .65rem;
  border-left: 3px solid transparent;
  white-space: nowrap;
}

.app-sidebar .nav-link i {
  width: 18px;
  text-align: center;
  font-size: .95rem;
}

.app-sidebar .nav-link:hover {
  background: rgba(255,255,255,.06);
  color: #fff;
}

.app-sidebar .nav-link.active {
  background: rgba(226,35,26,.15);
  color: #fff;
  border-left-color: var(--brand-red);
  font-weight: 600;
}

.app-main {
  flex: 1 1 auto;
  margin-left: var(--sidebar-width);
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  transition: margin-left .2s ease;
  width: calc(100% - var(--sidebar-width));
}

.app-shell.collapsed .app-main {
  margin-left: var(--sidebar-collapsed-width);
  width: calc(100% - var(--sidebar-collapsed-width));
}

.app-topbar {
  height: var(--topbar-height);
  background: #fff;
  border-bottom: 1px solid #e6e7eb;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 1rem;
  position: sticky;
  top: 0;
  z-index: 1020;
  flex-shrink: 0;
}

.app-content {
  flex: 1 1 auto;
  padding: 1rem 1.25rem 2rem;
  width: 100%;
}

.app-footer {
  flex-shrink: 0;
  padding: .6rem 1.25rem;
  border-top: 1px solid #e6e7eb;
  background: #fff;
  font-size: .74rem;
  color: #8a8d94;
  display: flex;
  align-items: center;
  gap: .4rem;
}

.app-footer-sep { color: #d5d6da; }

.app-footer a {
  color: var(--brand-red);
  text-decoration: none;
  font-weight: 600;
}

.app-footer a:hover { text-decoration: underline; }

.topbar-toggle {
  border: none;
  background: transparent;
  font-size: 1.1rem;
  color: var(--brand-black);
  padding: .25rem .5rem;
}

.page-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1rem;
  flex-wrap: wrap;
  gap: .5rem;
}

.page-header h1 {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--brand-black);
  margin: 0;
}

.page-header .breadcrumb {
  font-size: .75rem;
  margin: 0;
  padding: 0;
}

/* ---------- Compact KPI cards ---------- */
.kpi-card {
  background: #fff;
  border-radius: var(--card-radius);
  border: 1px solid #edeef1;
  box-shadow: 0 1px 3px rgba(20,22,26,.04);
  padding: .65rem .85rem;
  display: flex;
  align-items: center;
  gap: .65rem;
  height: 68px;
}

.kpi-card .kpi-icon {
  width: 38px;
  height: 38px;
  border-radius: .5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.05rem;
  flex-shrink: 0;
}

.kpi-card .kpi-value {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--brand-black);
  line-height: 1.1;
}

.kpi-card .kpi-label {
  font-size: .68rem;
  color: #7d8087;
  text-transform: uppercase;
  letter-spacing: .03em;
  white-space: nowrap;
}

.bg-soft-red { background: rgba(226,35,26,.12); color: var(--brand-red); }
.bg-soft-blue { background: rgba(13,110,253,.12); color: #0d6efd; }
.bg-soft-green { background: rgba(25,135,84,.12); color: #198754; }
.bg-soft-orange { background: rgba(255,153,0,.14); color: #cc7a00; }
.bg-soft-purple { background: rgba(111,66,193,.12); color: #6f42c1; }
.bg-soft-teal { background: rgba(32,201,151,.14); color: #17806a; }

.card-panel {
  background: #fff;
  border-radius: var(--card-radius);
  border: 1px solid #edeef1;
  box-shadow: 0 1px 3px rgba(20,22,26,.04);
}

.card-panel .card-panel-header {
  padding: .65rem 1rem;
  border-bottom: 1px solid #f0f0f2;
  font-weight: 700;
  font-size: .82rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  color: var(--brand-black);
}

.card-panel .card-panel-body {
  padding: .85rem 1rem;
}

.table-compact th, .table-compact td {
  padding: .45rem .6rem;
  font-size: .8rem;
  vertical-align: middle;
}

.table-compact thead th {
  background: #f8f9fb;
  font-weight: 600;
  color: #52545b;
  text-transform: uppercase;
  font-size: .68rem;
  letter-spacing: .03em;
  border-bottom: 1px solid #eceef1;
}

.badge-status {
  font-size: .68rem;
  font-weight: 600;
  padding: .3em .55em;
  border-radius: .4rem;
}

.btn-brand {
  background: var(--brand-red);
  border-color: var(--brand-red);
  color: #fff;
}
.btn-brand:hover {
  background: #c11c14;
  border-color: #c11c14;
  color: #fff;
}

/* ---------- BOM Tree ---------- */
.bom-tree ul {
  list-style: none;
  padding-left: 1.35rem;
  border-left: 1px dashed #d7d9de;
  margin: 0;
}
.bom-tree > ul { border-left: none; padding-left: 0; }
.bom-tree li { position: relative; padding: .15rem 0; }
.bom-node {
  display: inline-flex;
  align-items: center;
  gap: .4rem;
  padding: .25rem .55rem;
  border-radius: .4rem;
  cursor: pointer;
  font-size: .8rem;
  border: 1px solid transparent;
}
.bom-node:hover { background: #f4f5f8; }
.bom-node.selected { background: rgba(226,35,26,.1); border-color: rgba(226,35,26,.3); }
.bom-node .toggle-icon { width: 14px; color: #9a9ca3; font-size: .7rem; }
.bom-node.leaf-ok { color: #198754; }
.bom-node.leaf-short { color: var(--brand-red); font-weight: 600; }

/* ---------- Visual BOM Org Chart ---------- */
.viz-toolbar {
  display: flex;
  gap: .35rem;
  align-items: center;
}
.viz-canvas-wrapper {
  overflow: hidden;
  height: 70vh;
  background:
    linear-gradient(90deg, rgba(0,0,0,.03) 1px, transparent 1px) 0 0/24px 24px,
    linear-gradient(rgba(0,0,0,.03) 1px, transparent 1px) 0 0/24px 24px,
    #fff;
  cursor: grab;
  position: relative;
  border-radius: var(--card-radius);
}
.viz-canvas-wrapper.dragging { cursor: grabbing; }
.viz-canvas {
  position: absolute;
  top: 0;
  left: 0;
  transform-origin: 0 0;
  padding: 2rem;
}

.orgchart, .orgchart ul {
  list-style: none;
  margin: 0;
  padding: 0;
  text-align: center;
  white-space: nowrap;
}
.orgchart ul { display: flex; padding-top: 22px; position: relative; }
.orgchart li {
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  padding: 0 .75rem;
  position: relative;
}
.orgchart li ul { margin-top: 0; }
.orgchart li::before {
  content: '';
  position: absolute;
  top: -22px;
  left: 50%;
  border-left: 2px solid #d7d9de;
  height: 22px;
}
.orgchart > li::before { display: none; }
.orgchart ul::before {
  content: '';
  position: absolute;
  top: 0;
  left: calc(25% + 0px);
  right: calc(25% + 0px);
  border-top: 2px solid #d7d9de;
}
.orgchart li:only-child ul::before { display: none; }

.viz-node {
  position: relative;
  display: inline-flex;
  flex-direction: column;
  align-items: flex-start;
  gap: .1rem;
  background: #fff;
  border: 2px solid #dfe1e6;
  border-radius: .5rem;
  padding: .4rem .65rem;
  min-width: 140px;
  cursor: pointer;
  box-shadow: 0 1px 4px rgba(20,22,26,.06);
  white-space: normal;
  text-align: left;
}
.viz-node:hover { border-color: var(--brand-red); }
.viz-node.selected { border-color: var(--brand-red); box-shadow: 0 0 0 3px rgba(226,35,26,.15); }
.viz-node.root { background: var(--brand-black); border-color: var(--brand-black); color: #fff; }
.viz-node.leaf-ok { border-color: #198754; }
.viz-node.leaf-short { border-color: var(--brand-red); background: #fff5f5; }
.viz-node .viz-name { font-weight: 700; font-size: .8rem; }
.viz-node.root .viz-name { color: #fff; }
.viz-node .viz-meta { font-size: .68rem; color: #7d8087; }
.viz-node.root .viz-meta { color: #d8d8db; }
.viz-node .viz-toggle {
  position: absolute;
  bottom: -10px;
  left: 50%;
  transform: translateX(-50%);
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: #fff;
  border: 1px solid #d7d9de;
  font-size: .65rem;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 2;
}

.login-shell {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: radial-gradient(circle at top left, #2a2c31, var(--brand-black) 60%);
}
.login-card {
  width: 380px;
  background: #fff;
  border-radius: .8rem;
  padding: 2rem 1.75rem;
  box-shadow: 0 20px 50px rgba(0,0,0,.35);
}

@media (max-width: 991px) {
  .app-sidebar { width: var(--sidebar-collapsed-width); min-width: var(--sidebar-collapsed-width); }
  .app-main { margin-left: var(--sidebar-collapsed-width); width: calc(100% - var(--sidebar-collapsed-width)); }
  .sidebar-label, .brand-text, .nav-section-title { display: none; }
  .app-shell.collapsed .app-sidebar { width: var(--sidebar-width); min-width: var(--sidebar-width); }
  .app-shell.collapsed .app-main { margin-left: var(--sidebar-width); width: calc(100% - var(--sidebar-width)); }
  .app-shell.collapsed .sidebar-label, .app-shell.collapsed .brand-text, .app-shell.collapsed .nav-section-title { display: block; }
}