/* assets/css/app.css — ROBOTSchool Inventory */
:root {
  --rs-blue:      #3a72e8;
  --rs-orange:    #ff6b00;
  --rs-sidebar:   #1e2a3a;
  --rs-sidebar2:  #253447;
  --rs-radius:    12px;
  --rs-radius-sm: 8px;
  --rs-shadow:    0 2px 8px rgba(0,0,0,.08);
  --rs-shadow-md: 0 4px 16px rgba(0,0,0,.12);
  --rs-gray-100:  #f8f9fa;
  --rs-gray-200:  #e9ecef;
  --rs-border:    #dee2e6;
  --rs-text-muted:#6c757d;
  --rs-font-sm:   .8125rem;
  --rs-font-xs:   .75rem;
}

body { font-size: .9rem; color: #212529; background: #f4f6f9; }

/* ── Layout ── */
#wrapper { min-height: 100vh; }

#sidebar {
  width: 260px;
  min-width: 260px;
  min-height: 100vh;
  background: var(--rs-sidebar);
  display: flex;
  flex-direction: column;
  transition: width .25s ease;
}
#sidebar.collapsed { width: 64px; min-width: 64px; }
#sidebar.collapsed .nav-link span,
#sidebar.collapsed .sidebar-divider,
#sidebar.collapsed .sidebar-user .fw-bold,
#sidebar.collapsed .sidebar-user .text-muted,
#sidebar.collapsed .sidebar-header .fw-bold { display: none; }

#page-content { min-width: 0; background: #f4f6f9; }
.topbar { height: 54px; position: sticky; top: 0; z-index: 100; }

/* ── Sidebar links ── */
.bg-sidebar { background: var(--rs-sidebar) !important; }
.sidebar-link {
  color: rgba(255,255,255,.7) !important;
  border-radius: var(--rs-radius-sm);
  padding: .5rem .8rem;
  display: flex; align-items: center; gap: .65rem;
  font-size: .9rem;
  transition: background .15s, color .15s;
  white-space: nowrap;
}
.sidebar-link i { font-size: 1.1rem; flex-shrink: 0; }
.sidebar-link:hover  { background: rgba(255,255,255,.1) !important; color: #fff !important; }
.sidebar-link.active { background: var(--rs-blue) !important; color: #fff !important; }
.sidebar-divider {
  font-size: .68rem; font-weight: 700; letter-spacing: .1em;
  text-transform: uppercase; color: rgba(255,255,255,.35);
  padding: .9rem .8rem .3rem;
}
.sidebar-divider-active { color: var(--rs-orange) !important; font-weight: 600; }
.avatar-circle {
  width: 34px; height: 34px; border-radius: 50%;
  background: var(--rs-blue);
  display: flex; align-items: center; justify-content: center;
  font-size: 1rem; color: #fff; flex-shrink: 0;
}

/* ── Page header ── */
.page-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  margin-bottom: 1.25rem;
  gap: 1rem;
  flex-wrap: wrap;
}
.page-header-title {
  font-size: 1.375rem;
  font-weight: 700;
  margin: 0;
  line-height: 1.2;
}
.page-header-sub {
  font-size: var(--rs-font-sm);
  color: var(--rs-text-muted);
  margin: .2rem 0 0;
}

/* ── Stat cards ── */
.stat-card {
  border: none;
  border-left: 3px solid var(--rs-blue);
  border-radius: var(--rs-radius);
  box-shadow: var(--rs-shadow);
  background: #fff;
  transition: transform .2s, box-shadow .2s;
}
.stat-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--rs-shadow-md);
}
.stat-card.stat-danger {
  border-left-color: #dc3545;
  background: #fff8f8;
}
.stat-card.stat-warning {
  border-left-color: #fd7e14;
  background: #fffaf5;
}
.stat-card .icon-box {
  width: 44px; height: 44px;
  border-radius: var(--rs-radius-sm);
  display: flex; align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  flex-shrink: 0;
}
.dashboard-stat-num {
  font-size: 1.6rem;
  font-weight: 700;
  line-height: 1.1;
}
.dashboard-stat-lbl {
  font-size: var(--rs-font-xs);
  text-transform: uppercase;
  letter-spacing: .05em;
  color: var(--rs-text-muted);
  font-weight: 600;
}

/* ── Section cards ── */
.section-card {
  background: #fff;
  border-radius: var(--rs-radius);
  box-shadow: var(--rs-shadow);
  border: 1px solid var(--rs-gray-200);
  padding: 1.25rem;
  margin-bottom: 1.25rem;
}
.section-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1rem;
  padding-bottom: .75rem;
  border-bottom: 1px solid var(--rs-gray-200);
}
.section-card-title {
  font-size: .9375rem;
  font-weight: 600;
  margin: 0;
}

/* ── Filter bar ── */
.filter-bar {
  background: #fff;
  border-radius: var(--rs-radius);
  box-shadow: var(--rs-shadow);
  border: 1px solid var(--rs-gray-200);
  padding: .875rem 1rem;
  margin-bottom: 1.25rem;
}
.filter-bar .form-control,
.filter-bar .form-select {
  font-size: var(--rs-font-sm);
  border-color: var(--rs-border);
  border-radius: var(--rs-radius-sm);
}
.filter-bar .form-control:focus,
.filter-bar .form-select:focus {
  border-color: var(--rs-blue);
  box-shadow: 0 0 0 3px rgba(24,95,165,.12);
}

/* ── Semáforo ── */
.semaforo-rojo    { color: #dc3545; }
.semaforo-amarillo{ color: #ffc107; }
.semaforo-verde   { color: #28a745; }
.semaforo-azul    { color: #0dcaf0; }
.badge-semaforo   { font-size: .78rem; padding: .3rem .65rem; border-radius: 2rem; }

/* ── Table inventory ── */
.table-inv { font-size: var(--rs-font-sm); }
.table-inv thead th {
  background: var(--rs-gray-100);
  color: var(--rs-text-muted);
  font-size: var(--rs-font-xs);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .05em;
  border-bottom: 2px solid var(--rs-gray-200);
  padding: .6rem .75rem;
  white-space: nowrap;
}
.table-inv tbody tr {
  border-bottom: 1px solid var(--rs-gray-200);
  transition: background .15s;
}
.table-inv tbody tr:hover { background: var(--rs-gray-100); }
.table-inv tbody td {
  padding: .55rem .75rem;
  vertical-align: middle;
}

/* ── Progress stock ── */
.stock-bar { height: 6px; border-radius: 4px; }

/* ── Formularios ── */
.form-label { font-weight: 700; font-size: .88rem; }

/* ── Barcode ── */
.barcode-container { background: #fff; border: 1px solid #dde6f5; border-radius: var(--rs-radius); padding: 1rem; text-align: center; }
.barcode-container canvas,
.barcode-container svg { max-width: 100%; }

/* ── Kit cards ── */
.kit-card {
  background: #fff;
  border-radius: var(--rs-radius);
  box-shadow: var(--rs-shadow);
  border: 1px solid var(--rs-gray-200);
  overflow: hidden;
  transition: transform .2s, box-shadow .2s;
  height: 100%;
}
.kit-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--rs-shadow-md);
}
.kit-card-img {
  height: 140px;
  background: var(--rs-gray-100);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2.5rem;
  border-bottom: 1px solid var(--rs-gray-200);
}
.kit-card-body { padding: .875rem 1rem; }
.kit-card-code {
  font-size: var(--rs-font-xs);
  font-weight: 600;
  color: var(--rs-blue);
  font-family: monospace;
}
.kit-card-name {
  font-size: .9375rem;
  font-weight: 600;
  margin: .2rem 0 .5rem;
}
.kit-card-meta {
  font-size: var(--rs-font-xs);
  color: var(--rs-text-muted);
  display: flex;
  gap: .75rem;
  flex-wrap: wrap;
  margin-bottom: .625rem;
}
.kit-card-footer {
  padding: .75rem 1rem;
  background: var(--rs-gray-100);
  border-top: 1px solid var(--rs-gray-200);
  display: flex;
  gap: .375rem;
  align-items: center;
}

/* ── Responsive ── */
@media (max-width: 991px) {
  #sidebar {
    position: fixed;
    top: 0; left: -250px;
    height: 100vh;
    z-index: 1050;
    transition: left .25s ease;
    overflow-y: auto;
  }
  #sidebar.show { left: 0; }
  #page-content { margin-left: 0 !important; }
  .page-header { flex-direction: column; align-items: flex-start; }
  .page-header > div:last-child { width: 100%; }
  .page-header > div:last-child .btn { width: 100%; margin-bottom: .25rem; }
}
@media (max-width: 768px) {
  .filter-bar .row > div { margin-bottom: .5rem; }
  .table-inv thead th:not(:nth-child(-n+4)) { display: none; }
  .dashboard-stat-num { font-size: 1.3rem; }
  .kit-card-img { height: 100px; }
}
@media (max-width: 576px) {
  .section-card { padding: .875rem; }
  .page-header-title { font-size: 1.2rem; }
}