:root {
  --color-blue: #1565C0;
  --color-blue-dark: #0D47A1;
  --color-red: #C62828;
  --color-green: #2E7D32;
  --color-orange: #EF6C00;
  --color-purple: #6A1B9A;
  --sidebar-width: 260px;
  --topbar-height: 60px;
}

body {
  background: #f4f6f9;
  font-family: "Segoe UI", Tahoma, Arial, sans-serif;
}

/* ---------- Layout ---------- */
.app-sidebar {
  position: fixed;
  top: 0;
  bottom: 0;
  left: 0;
  width: var(--sidebar-width);
  background: linear-gradient(180deg, var(--color-blue-dark), var(--color-blue));
  color: #fff;
  overflow-y: auto;
  z-index: 1030;
}
.app-sidebar .brand {
  padding: 16px;
  text-align: center;
  border-bottom: 1px solid rgba(255,255,255,.15);
}
.app-sidebar .brand img { max-height: 44px; margin-bottom: 6px; }
.app-sidebar .brand .school-name { font-weight: 600; font-size: .95rem; display:block; }
.app-sidebar .nav-section-title {
  text-transform: uppercase;
  font-size: .7rem;
  letter-spacing: .05em;
  color: rgba(255,255,255,.55);
  padding: 14px 16px 4px;
}
.app-sidebar .nav-link {
  color: rgba(255,255,255,.9);
  padding: 9px 16px;
  font-size: .88rem;
  display: flex;
  align-items: center;
  gap: 10px;
  border-left: 3px solid transparent;
}
.app-sidebar .nav-link:hover { background: rgba(255,255,255,.08); color: #fff; }
.app-sidebar .nav-link.active {
  background: rgba(255,255,255,.14);
  border-left-color: var(--color-orange);
  color: #fff;
  font-weight: 600;
}
.app-sidebar .nav-link .badge-count {
  margin-left: auto;
}

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

.app-topbar {
  height: var(--topbar-height);
  background: #fff;
  border-bottom: 1px solid #e3e6ea;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 20px;
  position: sticky;
  top: 0;
  z-index: 1020;
}

.app-content { padding: 22px; }

.page-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 18px;
  flex-wrap: wrap;
  gap: 10px;
}
.page-header h1 {
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--color-blue-dark);
  margin: 0;
}
.page-header .breadcrumb-doc-code {
  font-size: .78rem;
  color: #6c757d;
}

/* ---------- Cards / KPI ---------- */
.kpi-card {
  border: none;
  border-radius: 10px;
  color: #fff;
  padding: 16px 18px;
  box-shadow: 0 2px 6px rgba(0,0,0,.08);
}
.kpi-card .kpi-value { font-size: 1.7rem; font-weight: 700; }
.kpi-card .kpi-label { font-size: .8rem; opacity: .9; }
.kpi-blue   { background: var(--color-blue); }
.kpi-green  { background: var(--color-green); }
.kpi-orange { background: var(--color-orange); }
.kpi-red    { background: var(--color-red); }
.kpi-purple { background: var(--color-purple); }

.card { border: none; border-radius: 10px; box-shadow: 0 2px 6px rgba(0,0,0,.06); }
.card-header { background: #fff; border-bottom: 1px solid #eef0f2; font-weight: 600; color: var(--color-blue-dark); }

/* ---------- Badges ---------- */
.badge-green  { background: var(--color-green); color: #fff; }
.badge-orange { background: var(--color-orange); color: #fff; }
.badge-red    { background: var(--color-red); color: #fff; }
.badge-blue   { background: var(--color-blue); color: #fff; }
.badge-purple { background: var(--color-purple); color: #fff; }
.badge-secondary { background: #6c757d; color: #fff; }

.btn-primary { background: var(--color-blue); border-color: var(--color-blue); }
.btn-primary:hover { background: var(--color-blue-dark); border-color: var(--color-blue-dark); }
.btn-success { background: var(--color-green); border-color: var(--color-green); }
.btn-warning { background: var(--color-orange); border-color: var(--color-orange); color:#fff; }
.btn-warning:hover { color:#fff; }
.btn-danger  { background: var(--color-red); border-color: var(--color-red); }
.btn-purple  { background: var(--color-purple); border-color: var(--color-purple); color: #fff; }
.btn-purple:hover { color:#fff; opacity:.9; }

table.table thead th {
  background: #eef2f7;
  font-size: .78rem;
  text-transform: uppercase;
  letter-spacing: .03em;
  color: #495057;
  white-space: nowrap;
}

.login-wrapper {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--color-blue-dark), var(--color-purple));
}
.login-card { max-width: 400px; width: 100%; border-radius: 14px; overflow: hidden; }
.login-card .card-header {
  background: var(--color-blue);
  color: #fff;
  text-align: center;
  padding: 26px 20px;
}

/* ---------- Controlled document print header ---------- */
.doc-header-table td, .doc-header-table th {
  border: 1px solid #333;
  padding: 5px 8px;
  font-size: .8rem;
}
.doc-header-table th { background: var(--color-green); color: #fff; }
.doc-title {
  text-align: center;
  font-weight: 800;
  font-size: 1.25rem;
  color: var(--color-blue-dark);
  margin: 14px 0;
  text-transform: uppercase;
}
.print-only { display: none; }

.sig-pad-wrap canvas {
  border: 1px dashed #999;
  border-radius: 6px;
  width: 100%;
  touch-action: none;
  background: #fff;
}

@media print {
  .app-sidebar, .app-topbar, .no-print { display: none !important; }
  .app-main { margin-left: 0 !important; }
  .app-content { padding: 0 !important; }
  .print-only { display: block !important; }
  body { background: #fff !important; }
}

/* ---------- Organization chart (pure CSS tree) ---------- */
.org-tree-wrap { overflow-x: auto; padding: 20px 10px; }
.org-tree, .org-tree ul {
  padding-top: 20px;
  position: relative;
  display: flex;
  justify-content: center;
}
.org-tree ul { margin: 0; }
.org-tree li {
  display: flex;
  flex-direction: column;
  align-items: center;
  list-style: none;
  position: relative;
  padding: 20px 10px 0 10px;
}
.org-tree li::before, .org-tree li::after {
  content: '';
  position: absolute;
  top: 0;
  right: 50%;
  border-top: 2px solid #c3cbd6;
  width: 50%;
  height: 20px;
}
.org-tree li::after { right: auto; left: 50%; border-left: 2px solid #c3cbd6; }
.org-tree li:only-child::after, .org-tree li:only-child::before { display: none; }
.org-tree li:only-child { padding-top: 0; }
.org-tree li:first-child::before, .org-tree li:last-child::after { border: 0 none; }
.org-tree li:last-child::before { border-right: 2px solid #c3cbd6; border-radius: 0 6px 0 0; }
.org-tree li:first-child::after { border-radius: 6px 0 0 0; }
.org-tree ul ul::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  border-left: 2px solid #c3cbd6;
  width: 0;
  height: 20px;
}
.org-node {
  display: inline-block;
  border-radius: 8px;
  padding: 8px 14px;
  font-size: .78rem;
  font-weight: 600;
  color: #fff;
  white-space: nowrap;
  box-shadow: 0 2px 4px rgba(0,0,0,.15);
}
.org-node .org-node-subtitle { display:block; font-weight:400; font-size:.68rem; opacity:.9; white-space:normal; max-width:160px; }
.org-node-blue   { background: var(--color-blue); }
.org-node-green  { background: var(--color-green); }
.org-node-orange { background: var(--color-orange); }
.org-node-red    { background: var(--color-red); }
.org-node-purple { background: var(--color-purple); }
.org-node-actions { margin-top: 4px; }

@media (max-width: 991px) {
  .app-sidebar { transform: translateX(-100%); transition: transform .2s; }
  .app-sidebar.show { transform: translateX(0); }
  .app-main { margin-left: 0; }
}