:root {
  --adk-accent: #2b6cb0;
  --adk-accent-hover: #245a96;
  --adk-accent-bg: #e8f0fa;
  --adk-page: #f4f6f9;
  --adk-surface: #ffffff;
  --adk-border: #e6e8ec;
  --adk-text: #1f2937;
  --adk-text-muted: #6b7280;
  --adk-sidebar-w: 220px;
  --adk-radius: 10px;
  --adk-success: #1f9d55;
  --adk-success-bg: #e6f6ec;
  --adk-amber: #b7791f;
  --adk-amber-bg: #fbf0da;
  --adk-danger: #c53030;
  --adk-danger-bg: #fdeaea;
}

* { box-sizing: border-box; }

html { font-size: 15px; position: relative; min-height: 100%; }

body {
  margin: 0;
  background: var(--adk-page);
  color: var(--adk-text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

/* ===== App shell: sidebar + content ===== */
.adk-app { display: flex; min-height: 100vh; }

.adk-sidebar {
  width: var(--adk-sidebar-w);
  flex: 0 0 var(--adk-sidebar-w);
  background: var(--adk-surface);
  border-right: 1px solid var(--adk-border);
  padding: 18px 12px;
  display: flex;
  flex-direction: column;
  position: sticky;
  top: 0;
  height: 100vh;
}

.adk-brand {
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--adk-accent);
  letter-spacing: .02em;
  padding: 6px 12px 18px;
}

.adk-nav { display: flex; flex-direction: column; gap: 2px; }

.adk-nav a,
.adk-nav .adk-nav__logout {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 9px 12px;
  border-radius: var(--adk-radius);
  color: var(--adk-text-muted);
  text-decoration: none;
  font-size: .92rem;
  border: 0;
  background: none;
  width: 100%;
  cursor: pointer;
  transition: background .12s, color .12s;
}
.adk-nav a:hover,
.adk-nav .adk-nav__logout:hover { background: var(--adk-page); color: var(--adk-text); }
.adk-nav a.active { background: var(--adk-accent-bg); color: var(--adk-accent); font-weight: 500; }
.adk-nav a i, .adk-nav .adk-nav__logout i { font-size: 1.05rem; }
.adk-nav__group-title { font-size: .72rem; text-transform: uppercase; letter-spacing: .05em; color: var(--adk-text-muted); padding: 14px 12px 4px; }
.adk-nav__spacer { margin-top: auto; }

/* Logout partial (navbar-nav ul) restyled to match sidebar items */
.adk-nav .navbar-nav { list-style: none; padding: 0; margin: 0; width: 100%; }
.adk-nav .navbar-nav .form-inline { margin: 0; }
.adk-nav .navbar-nav .nav-link {
  display: flex; align-items: center; gap: 10px;
  padding: 9px 12px; border-radius: var(--adk-radius);
  color: var(--adk-text-muted); font-size: .92rem; text-decoration: none;
  width: 100%; text-align: left; border: 0; background: none; cursor: pointer;
}
.adk-nav .navbar-nav .nav-link:hover { background: var(--adk-page); color: var(--adk-text); }
.adk-nav .navbar-nav .nav-link i { font-size: 1.05rem; }

.adk-content { flex: 1; min-width: 0; padding: 24px 28px; }

/* ===== Headings ===== */
h1 { font-size: 1.6rem; font-weight: 600; margin: 0 0 .2rem; }
h2 { font-size: 1.25rem; font-weight: 600; }
h3 { font-size: 1.05rem; font-weight: 600; }

.header-container { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-bottom: 1rem; }

/* ===== Cards / panels ===== */
.card {
  background: var(--adk-surface);
  border: 1px solid var(--adk-border);
  border-radius: 12px;
}

/* ===== Buttons ===== */
.btn {
  border-radius: var(--adk-radius);
  font-size: .9rem;
  padding: .45rem .9rem;
  border: 1px solid var(--adk-border);
  transition: background .12s, border-color .12s;
}
.btn-primary { background: var(--adk-accent); border-color: var(--adk-accent); }
.btn-primary:hover { background: var(--adk-accent-hover); border-color: var(--adk-accent-hover); }
.btn-default, .btn-secondary { background: var(--adk-surface); color: var(--adk-text); }
.btn-default:hover, .btn-secondary:hover { background: var(--adk-page); }

/* ===== Forms ===== */
.form-control, .form-select {
  border-radius: var(--adk-radius);
  border: 1px solid var(--adk-border);
  font-size: .92rem;
  padding: .5rem .7rem;
}
.form-control:focus, .form-select:focus {
  border-color: var(--adk-accent);
  box-shadow: 0 0 0 3px var(--adk-accent-bg);
}

/* ===== Tables -> clean rows ===== */
.table { border-collapse: separate; border-spacing: 0; width: 100%; background: transparent; }
.table > :not(caption) > * > * { background: transparent; }
.table th {
  font-size: .74rem;
  text-transform: uppercase;
  letter-spacing: .03em;
  color: var(--adk-text-muted);
  font-weight: 500;
  border-bottom: 1px solid var(--adk-border);
  padding: 10px 14px;
}
.table td {
  padding: 14px;
  border-bottom: 1px solid var(--adk-border);
  vertical-align: middle;
}
.table-striped > tbody > tr:nth-of-type(odd) > * { background: transparent; }
.table tbody tr:hover td { background: #fafbfc; }

/* ===== Status badges ===== */
.adk-badge {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-size: .76rem;
  font-weight: 500;
  padding: 3px 10px;
  border-radius: 20px;
  white-space: nowrap;
}
.adk-badge--new { background: var(--adk-success-bg); color: var(--adk-success); }
.adk-badge--used { background: var(--adk-amber-bg); color: var(--adk-amber); }
.adk-badge--instock { background: var(--adk-success-bg); color: var(--adk-success); }
.adk-badge--order { background: var(--adk-page); color: var(--adk-text-muted); }

/* ===== Filter chips ===== */
.adk-chips { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 1rem; }
.adk-chips .btn { border-radius: 20px; padding: .3rem .9rem; font-size: .82rem; }

/* ===== Breadcrumb ===== */
.breadcrumb { font-size: .85rem; }

/* ===== Clickable product images (lightbox) ===== */
.js-zoomable { cursor: zoom-in; transition: transform .15s ease, box-shadow .15s ease; border-radius: 8px; }
.js-zoomable:hover { transform: scale(1.04); box-shadow: 0 0 0 3px var(--adk-accent-bg); position: relative; z-index: 2; }
#imageLightbox .modal-content { background: transparent; border: 0; }
#imageLightboxImg { cursor: zoom-out; }

.bootstrap-select { width: 100% !important; }

/* ===== Responsive ===== */
@media (max-width: 820px) {
  .adk-app { flex-direction: column; }
  .adk-sidebar { width: 100%; height: auto; position: static; flex-direction: row; flex-wrap: wrap; align-items: center; gap: 4px; padding: 10px; }
  .adk-brand { padding: 6px 10px; }
  .adk-nav { flex-direction: row; flex-wrap: wrap; }
  .adk-nav__group-title, .adk-nav__spacer { display: none; }
  .adk-content { padding: 16px; }
}