/* =========================================================
   NexaERP — Enterprise Design System
   ========================================================= */

/* === CSS Custom Properties === */
:root {
  /* Sidebar */
  --sidebar-w: 240px;
  --sidebar-collapsed: 64px;
  --topbar-h: 56px;

  /* Light theme */
  --bg-page:      #f0f4f8;
  --bg-sidebar:   #0f172a;
  --bg-topbar:    #ffffff;
  --bg-card:      #ffffff;
  --bg-hover:     #f1f5f9;
  --bg-input:     #f8fafc;

  --text-primary:   #0f172a;
  --text-secondary: #475569;
  --text-muted:     #94a3b8;
  --text-sidebar:   #cbd5e1;
  --text-sidebar-active: #ffffff;

  --border:       #e2e8f0;
  --border-light: #f1f5f9;

  /* Brand accent */
  --accent:       #4f46e5;
  --accent-hover: #4338ca;
  --accent-light: rgba(79, 70, 229, 0.1);
  --accent-text:  #4f46e5;

  /* Module colours */
  --clr-dashboard:    #4f46e5;
  --clr-hr:           #0ea5e9;
  --clr-manufacturing:#f59e0b;
  --clr-inventory:    #10b981;
  --clr-planning:     #8b5cf6;
  --clr-purchase:     #f97316;
  --clr-listing:      #ec4899;
  --clr-dataextract:  #64748b;
  --clr-admin:        #ef4444;

  /* Status */
  --success: #10b981;
  --warning: #f59e0b;
  --danger:  #ef4444;
  --info:    #0ea5e9;
  --success-light: rgba(16,185,129,.12);
  --warning-light: rgba(245,158,11,.12);
  --danger-light:  rgba(239,68,68,.12);
  --info-light:    rgba(14,165,233,.12);

  /* Shadows */
  --shadow-xs: 0 1px 2px rgba(0,0,0,.05);
  --shadow-sm: 0 1px 4px rgba(0,0,0,.08), 0 1px 2px rgba(0,0,0,.04);
  --shadow-md: 0 4px 16px rgba(0,0,0,.1),  0 2px 6px rgba(0,0,0,.06);
  --shadow-lg: 0 10px 40px rgba(0,0,0,.12);

  --radius:    12px;
  --radius-sm: 8px;
  --radius-xs: 6px;
  --transition: 0.2s ease;
}

[data-theme="dark"] {
  --bg-page:      #0b1120;
  --bg-sidebar:   #060d1a;
  --bg-topbar:    #111827;
  --bg-card:      #111827;
  --bg-hover:     #1e293b;
  --bg-input:     #1e293b;

  --text-primary:   #f1f5f9;
  --text-secondary: #94a3b8;
  --text-muted:     #64748b;
  --text-sidebar:   #94a3b8;
  --text-sidebar-active: #ffffff;

  --border:       #1e293b;
  --border-light: #1a2542;

  --accent:       #6366f1;
  --accent-hover: #818cf8;
  --accent-light: rgba(99,102,241,0.15);
  --accent-text:  #818cf8;

  --shadow-sm: 0 1px 4px rgba(0,0,0,.3);
  --shadow-md: 0 4px 16px rgba(0,0,0,.45);
  --shadow-lg: 0 10px 40px rgba(0,0,0,.55);
}

/* === Reset & Base === */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; font-size: 16px; }

body {
  font-family: 'Inter', 'Segoe UI', system-ui, sans-serif;
  background: var(--bg-page);
  color: var(--text-primary);
  min-height: 100vh;
  line-height: 1.6;
  display: flex;
  transition: background var(--transition), color var(--transition);
}

a { color: var(--accent); text-decoration: none; }
a:hover { color: var(--accent-hover); }
img { max-width: 100%; display: block; }

/* =========================================================
   SIDEBAR
   ========================================================= */
.sidebar {
  position: fixed;
  top: 0; left: 0;
  width: var(--sidebar-w);
  height: 100vh;
  background: var(--bg-sidebar);
  display: flex;
  flex-direction: column;
  z-index: 200;
  transition: width var(--transition);
  overflow: hidden;
  border-right: 1px solid rgba(255,255,255,.05);
}

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

/* Brand */
.sidebar-brand {
  display: flex;
  align-items: center;
  gap: .75rem;
  padding: 1.1rem 1rem;
  border-bottom: 1px solid rgba(255,255,255,.06);
  flex-shrink: 0;
  min-height: var(--topbar-h);
  text-decoration: none;
}

.sidebar-brand-icon {
  width: 36px; height: 36px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--accent), #a855f7);
  display: flex; align-items: center; justify-content: center;
  font-size: 1.1rem; flex-shrink: 0;
  box-shadow: 0 4px 12px rgba(79,70,229,.4);
}

.sidebar-brand-text {
  font-weight: 800;
  font-size: 1.05rem;
  color: #fff;
  letter-spacing: -.01em;
  white-space: nowrap;
  opacity: 1;
  transition: opacity var(--transition);
}
.sidebar.collapsed .sidebar-brand-text { opacity: 0; width: 0; overflow: hidden; }

/* Navigation */
.sidebar-nav {
  flex: 1;
  overflow-y: auto;
  overflow-x: hidden;
  padding: .75rem 0;
}

.sidebar-nav::-webkit-scrollbar { width: 3px; }
.sidebar-nav::-webkit-scrollbar-track { background: transparent; }
.sidebar-nav::-webkit-scrollbar-thumb { background: rgba(255,255,255,.1); border-radius: 99px; }

.nav-group {
  margin-bottom: .25rem;
  padding: 0 .5rem;
}

.nav-group-label {
  font-size: .67rem;
  font-weight: 700;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: rgba(255,255,255,.3);
  padding: .6rem .6rem .3rem;
  white-space: nowrap;
  overflow: hidden;
  transition: opacity var(--transition);
}
.sidebar.collapsed .nav-group-label { opacity: 0; height: 0; padding: 0; }

.nav-item {
  display: flex;
  align-items: center;
  gap: .7rem;
  padding: .55rem .65rem;
  border-radius: var(--radius-sm);
  color: var(--text-sidebar);
  font-size: .875rem;
  font-weight: 500;
  cursor: pointer;
  transition: background var(--transition), color var(--transition);
  white-space: nowrap;
  text-decoration: none;
  position: relative;
}

.nav-item:hover {
  background: rgba(255,255,255,.07);
  color: #fff;
}

.nav-item.active {
  background: rgba(255,255,255,.1);
  color: #fff;
  font-weight: 600;
}

.nav-item.active .nav-icon { opacity: 1; }

/* Coloured left border on active items */
.nav-item.active::before {
  content: '';
  position: absolute;
  left: -8px; top: 20%; bottom: 20%;
  width: 3px;
  border-radius: 0 2px 2px 0;
  background: var(--module-color, var(--accent));
}

.nav-icon {
  font-size: 1.1rem;
  width: 22px;
  flex-shrink: 0;
  text-align: center;
  opacity: .75;
  transition: opacity var(--transition);
}

.nav-label {
  flex: 1;
  opacity: 1;
  transition: opacity var(--transition);
  overflow: hidden;
}
.sidebar.collapsed .nav-label { opacity: 0; width: 0; }

/* Sub-group (expandable) */
.nav-sub { padding-left: 2rem; }
.nav-sub .nav-item { font-size: .82rem; padding: .4rem .6rem; }

/* Tooltip for collapsed state */
.sidebar.collapsed .nav-item { position: relative; }
.sidebar.collapsed .nav-item:hover::after {
  content: attr(data-tooltip);
  position: absolute;
  left: calc(var(--sidebar-collapsed) + 8px);
  top: 50%; transform: translateY(-50%);
  background: #1e293b;
  color: #fff;
  font-size: .78rem;
  font-weight: 600;
  padding: .35rem .75rem;
  border-radius: var(--radius-xs);
  white-space: nowrap;
  box-shadow: var(--shadow-md);
  z-index: 300;
  pointer-events: none;
}

/* Sidebar Footer */
.sidebar-footer {
  padding: .75rem .5rem;
  border-top: 1px solid rgba(255,255,255,.06);
  flex-shrink: 0;
}

.sidebar-collapse-btn {
  display: flex;
  align-items: center;
  gap: .65rem;
  padding: .55rem .65rem;
  border-radius: var(--radius-sm);
  color: var(--text-sidebar);
  font-size: .82rem;
  font-weight: 500;
  cursor: pointer;
  border: none;
  background: none;
  width: 100%;
  transition: background var(--transition), color var(--transition);
  white-space: nowrap;
}
.sidebar-collapse-btn:hover { background: rgba(255,255,255,.07); color: #fff; }

.sidebar-collapse-btn .collapse-icon { font-size: .9rem; width: 22px; text-align: center; }

.collapse-label { opacity: 1; transition: opacity var(--transition); }
.sidebar.collapsed .collapse-label { opacity: 0; width: 0; overflow: hidden; }

/* =========================================================
   MAIN WRAPPER  (right of sidebar)
   ========================================================= */
.main-wrapper {
  flex: 1;
  margin-left: var(--sidebar-w);
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  transition: margin-left var(--transition);
}
body.sidebar-collapsed .main-wrapper { margin-left: var(--sidebar-collapsed); }

/* =========================================================
   TOPBAR
   ========================================================= */
.topbar {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--topbar-h);
  background: var(--bg-topbar);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 0 1.5rem;
  backdrop-filter: blur(10px);
  box-shadow: var(--shadow-xs);
}

.topbar-left { flex: 1; display: flex; align-items: center; gap: .75rem; }

.breadcrumb {
  display: flex;
  align-items: center;
  gap: .4rem;
  font-size: .82rem;
  color: var(--text-muted);
}
.breadcrumb .bc-sep { color: var(--border); }
.breadcrumb .bc-current { color: var(--text-primary); font-weight: 600; }

.hamburger-btn {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: .4rem;
  border-radius: var(--radius-xs);
  color: var(--text-secondary);
  font-size: 1.3rem;
  line-height: 1;
}
.hamburger-btn:hover { background: var(--bg-hover); color: var(--text-primary); }

.topbar-right { display: flex; align-items: center; gap: .5rem; }

.topbar-user {
  display: flex;
  align-items: center;
  gap: .5rem;
  padding: .35rem .75rem;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: background var(--transition);
  text-decoration: none;
  color: var(--text-secondary);
  font-size: .85rem;
  font-weight: 500;
}
.topbar-user:hover { background: var(--bg-hover); color: var(--text-primary); }

.user-avatar {
  width: 30px; height: 30px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent), #a855f7);
  display: flex; align-items: center; justify-content: center;
  font-size: .75rem; font-weight: 700; color: #fff;
  flex-shrink: 0;
}

.theme-toggle {
  background: var(--bg-hover);
  border: 1px solid var(--border);
  color: var(--text-secondary);
  cursor: pointer;
  width: 36px; height: 36px;
  border-radius: var(--radius-xs);
  display: flex; align-items: center; justify-content: center;
  font-size: 1rem;
  transition: background var(--transition), transform .15s;
}
.theme-toggle:hover { background: var(--accent-light); color: var(--accent); transform: scale(1.08); }

/* =========================================================
   FLASH MESSAGES
   ========================================================= */
.flash-container {
  position: fixed;
  top: calc(var(--topbar-h) + .75rem);
  right: 1.25rem;
  z-index: 500;
  display: flex;
  flex-direction: column;
  gap: .5rem;
  max-width: 380px;
}

.flash {
  display: flex;
  align-items: flex-start;
  gap: .75rem;
  padding: .85rem 1rem;
  border-radius: var(--radius-sm);
  font-size: .875rem;
  font-weight: 500;
  box-shadow: var(--shadow-md);
  animation: slideInRight .3s ease both;
  border-left: 4px solid;
}

.flash-success { background: var(--bg-card); border-color: var(--success); color: var(--text-primary); }
.flash-danger,
.flash-error   { background: var(--bg-card); border-color: var(--danger);  color: var(--text-primary); }
.flash-warning { background: var(--bg-card); border-color: var(--warning); color: var(--text-primary); }
.flash-info    { background: var(--bg-card); border-color: var(--info);    color: var(--text-primary); }

.flash span { flex: 1; }

.flash-close {
  background: none; border: none; cursor: pointer;
  color: var(--text-muted); font-size: 1rem; line-height: 1;
  padding: 0 .2rem; flex-shrink: 0;
  transition: color var(--transition);
}
.flash-close:hover { color: var(--text-primary); }

@keyframes slideInRight {
  from { opacity: 0; transform: translateX(20px); }
  to   { opacity: 1; transform: translateX(0); }
}

/* =========================================================
   CONTENT AREA
   ========================================================= */
.content-area {
  flex: 1;
  padding: 1.5rem;
  overflow-x: hidden;
}

.page-header {
  margin-bottom: 1.5rem;
}

.page-header h1 {
  font-size: clamp(1.4rem, 2.5vw, 1.9rem);
  font-weight: 800;
  letter-spacing: -.02em;
  line-height: 1.25;
}

.page-header p {
  color: var(--text-secondary);
  margin-top: .35rem;
  font-size: .95rem;
}

.page-header-row {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}

/* =========================================================
   MODULE HUB — card grid for sub-module links
   ========================================================= */
.module-hub-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.module-hub-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: .6rem;
  text-decoration: none;
  color: var(--text-primary);
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
  box-shadow: var(--shadow-xs);
  cursor: pointer;
}

.module-hub-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
  border-color: var(--card-color, var(--accent));
  color: var(--text-primary);
}

.hub-card-icon {
  width: 44px; height: 44px;
  border-radius: 11px;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.3rem;
  background: color-mix(in srgb, var(--card-color, var(--accent)) 12%, transparent);
  color: var(--card-color, var(--accent));
}

.hub-card-title { font-size: .95rem; font-weight: 700; }
.hub-card-desc  { font-size: .8rem; color: var(--text-muted); line-height: 1.4; }

.hub-card-arrow {
  margin-top: auto;
  font-size: .8rem;
  color: var(--card-color, var(--accent));
  font-weight: 600;
}

/* =========================================================
   KPI / STAT CARDS
   ========================================================= */
.kpi-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.kpi-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem;
  box-shadow: var(--shadow-xs);
  display: flex;
  flex-direction: column;
  gap: .5rem;
  position: relative;
  overflow: hidden;
}

.kpi-card::after {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: var(--kpi-color, var(--accent));
  border-radius: var(--radius) var(--radius) 0 0;
}

.kpi-label {
  font-size: .75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .06em;
  color: var(--text-muted);
}

.kpi-value {
  font-size: 2rem;
  font-weight: 800;
  letter-spacing: -.03em;
  color: var(--text-primary);
  line-height: 1;
}

.kpi-sub {
  font-size: .78rem;
  color: var(--text-muted);
}

.kpi-icon {
  position: absolute;
  right: 1rem; top: 50%;
  transform: translateY(-50%);
  font-size: 2.5rem;
  opacity: .07;
}

/* =========================================================
   DATA TABLE CARD
   ========================================================= */
.table-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-xs);
  overflow: hidden;
  margin-bottom: 1.5rem;
}

.table-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: .9rem 1.25rem;
  border-bottom: 1px solid var(--border);
  gap: .75rem;
  flex-wrap: wrap;
}

.table-card-title {
  font-size: .95rem;
  font-weight: 700;
}

.table-card-actions { display: flex; gap: .5rem; align-items: center; flex-wrap: wrap; }

.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: .875rem;
}

.data-table th {
  background: var(--bg-hover);
  padding: .6rem 1rem;
  text-align: left;
  font-size: .72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .07em;
  color: var(--text-muted);
  border-bottom: 1px solid var(--border);
  white-space: nowrap;
}

.data-table td {
  padding: .7rem 1rem;
  border-bottom: 1px solid var(--border-light);
  vertical-align: middle;
  color: var(--text-primary);
}

.data-table tr:last-child td { border-bottom: none; }
.data-table tr:hover td { background: var(--bg-hover); }
.data-table th:first-child, .data-table td:first-child { padding-left: 1.25rem; }

/* =========================================================
   STATUS BADGES
   ========================================================= */
.badge {
  display: inline-flex;
  align-items: center;
  gap: .3rem;
  padding: .2rem .6rem;
  border-radius: 99px;
  font-size: .72rem;
  font-weight: 700;
  letter-spacing: .03em;
}

.badge-success { background: var(--success-light); color: var(--success); }
.badge-warning { background: var(--warning-light); color: #b45309; }
.badge-danger  { background: var(--danger-light);  color: var(--danger);  }
.badge-info    { background: var(--info-light);    color: #0369a1; }
.badge-muted   { background: var(--bg-hover);      color: var(--text-muted); }

.badge-rm  { background: rgba(14,165,233,.12);  color: #0369a1; }
.badge-sfp { background: rgba(245,158,11,.12);  color: #b45309; }
.badge-fp  { background: rgba(16,185,129,.12);  color: #047857; }

/* Dot prefix */
.badge::before {
  content: '';
  width: 5px; height: 5px;
  border-radius: 50%;
  background: currentColor;
  display: none;
}
.badge.dot::before { display: inline-block; }

/* =========================================================
   BUTTONS
   ========================================================= */
.btn {
  display: inline-flex;
  align-items: center;
  gap: .45rem;
  padding: .55rem 1.1rem;
  border-radius: var(--radius-xs);
  font-size: .875rem;
  font-weight: 600;
  cursor: pointer;
  border: 1px solid transparent;
  transition: transform .15s, box-shadow .15s, background var(--transition), color var(--transition);
  text-decoration: none;
  white-space: nowrap;
}

.btn:hover   { transform: translateY(-1px); }
.btn:active  { transform: translateY(0); }

.btn-primary {
  background: var(--accent);
  color: #fff;
  box-shadow: 0 2px 8px rgba(79,70,229,.3);
}
.btn-primary:hover { background: var(--accent-hover); color: #fff; box-shadow: 0 4px 16px rgba(79,70,229,.4); }

.btn-outline {
  background: transparent;
  color: var(--text-secondary);
  border-color: var(--border);
}
.btn-outline:hover { background: var(--bg-hover); color: var(--text-primary); border-color: var(--text-muted); }

.btn-success { background: var(--success); color: #fff; }
.btn-success:hover { background: #059669; color: #fff; }

.btn-danger  { background: var(--danger);  color: #fff; }
.btn-danger:hover  { background: #dc2626;  color: #fff; }

.btn-warning { background: var(--warning); color: #fff; }

.btn-ghost {
  background: transparent;
  color: var(--text-secondary);
  border: none;
}
.btn-ghost:hover { background: var(--bg-hover); color: var(--text-primary); }

.btn-sm { padding: .35rem .75rem; font-size: .8rem; }
.btn-lg { padding: .75rem 1.5rem; font-size: 1rem; }
.btn-icon { padding: .45rem; }

/* =========================================================
   FORM CONTROLS
   ========================================================= */
.form-group { display: flex; flex-direction: column; gap: .35rem; }

.form-group label {
  font-size: .8rem;
  font-weight: 600;
  color: var(--text-secondary);
}

.form-control {
  padding: .55rem .85rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-xs);
  background: var(--bg-input);
  color: var(--text-primary);
  font-size: .875rem;
  font-family: inherit;
  transition: border-color var(--transition), box-shadow var(--transition);
  width: 100%;
}

.form-control:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-light);
}

select.form-control { cursor: pointer; }
textarea.form-control { resize: vertical; min-height: 72px; }

.form-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: .75rem;
}

/* =========================================================
   PANEL / CARD
   ========================================================= */
.panel {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-xs);
  overflow: hidden;
  margin-bottom: 1.5rem;
}

.panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 1.25rem;
  border-bottom: 1px solid var(--border);
  gap: .75rem;
  flex-wrap: wrap;
}

.panel-title { font-size: .95rem; font-weight: 700; }
.panel-body  { padding: 1.25rem; }

/* =========================================================
   EMPTY STATE
   ========================================================= */
.empty-state {
  text-align: center;
  padding: 3rem 2rem;
  color: var(--text-muted);
}

.empty-state .es-icon { font-size: 3rem; margin-bottom: .75rem; }
.empty-state h3 { font-size: 1.05rem; font-weight: 700; color: var(--text-secondary); margin-bottom: .4rem; }
.empty-state p  { font-size: .88rem; max-width: 320px; margin: 0 auto; }

/* =========================================================
   PAGINATION
   ========================================================= */
.pagination {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: .3rem;
  padding: 1rem;
  border-top: 1px solid var(--border);
}

/* =========================================================
   DEV BANNER
   ========================================================= */
.dev-banner {
  background: linear-gradient(90deg, #f59e0b, #d97706);
  color: #1c1917;
  padding: .45rem 1.25rem;
  display: flex;
  align-items: center;
  gap: .65rem;
  flex-wrap: wrap;
  font-size: .82rem;
  font-weight: 500;
  z-index: 999;
  flex-shrink: 0;
}

.dev-switcher { display: flex; align-items: center; gap: .35rem; margin-left: auto; }
.dev-switch-label { font-size: .75rem; }

.dev-btn {
  padding: .2rem .65rem;
  border-radius: 99px;
  border: 1px solid rgba(0,0,0,.2);
  background: rgba(0,0,0,.08);
  font-size: .75rem;
  font-weight: 600;
  cursor: pointer;
  transition: background .15s;
}
.dev-btn:hover, .dev-btn.active { background: rgba(0,0,0,.18); }

.dev-role-badge { font-weight: 700; text-transform: uppercase; }

/* =========================================================
   ROLE BADGES
   ========================================================= */
.role-badge {
  display: inline-flex;
  align-items: center;
  padding: .2rem .6rem;
  border-radius: 99px;
  font-size: .7rem;
  font-weight: 700;
  letter-spacing: .04em;
}
.role-admin { background: var(--danger-light); color: var(--danger); }
.role-user  { background: var(--info-light);   color: #0369a1; }

/* =========================================================
   FOOTER (minimal, inside content area)
   ========================================================= */
.app-footer {
  padding: .9rem 1.5rem;
  border-top: 1px solid var(--border);
  background: var(--bg-card);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: .5rem;
  font-size: .78rem;
  color: var(--text-muted);
}

/* =========================================================
   MOBILE SIDEBAR OVERLAY
   ========================================================= */
.sidebar-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,.5);
  z-index: 190;
  backdrop-filter: blur(2px);
}

/* =========================================================
   UTILITIES
   ========================================================= */
.flex { display: flex; }
.flex-col { flex-direction: column; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.gap-1 { gap: .5rem; }
.gap-2 { gap: 1rem; }
.gap-3 { gap: 1.5rem; }
.flex-wrap { flex-wrap: wrap; }
.flex-1 { flex: 1; }
.w-full { width: 100%; }
.mt-1  { margin-top: .5rem; }
.mt-2  { margin-top: 1rem; }
.mb-1  { margin-bottom: .5rem; }
.mb-2  { margin-bottom: 1rem; }
.mb-3  { margin-bottom: 1.5rem; }
.text-muted    { color: var(--text-muted); }
.text-sm       { font-size: .82rem; }
.text-xs       { font-size: .72rem; }
.font-bold     { font-weight: 700; }
.font-semibold { font-weight: 600; }
.text-right    { text-align: right; }
.text-center   { text-align: center; }
.divider       { height: 1px; background: var(--border); margin: 1.25rem 0; }

/* code */
code {
  background: var(--accent-light);
  color: var(--accent-text);
  padding: .12rem .4rem;
  border-radius: 5px;
  font-size: .85em;
  font-family: 'JetBrains Mono', 'Fira Code', monospace;
}

/* Scrollbar */
::-webkit-scrollbar { width: 5px; height: 5px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 99px; }
::-webkit-scrollbar-thumb:hover { background: var(--text-muted); }

/* =========================================================
   DEV BANNER
   ========================================================= */
.dev-banner {
  background: var(--bg-sidebar);
  color: #f8fafc;
  padding: 0.5rem 1rem;
  font-size: 0.82rem;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  box-shadow: var(--shadow-sm);
  border-bottom: 1px solid rgba(255,255,255,0.1);
  font-family: 'JetBrains Mono', monospace;
  box-sizing: border-box;
}

.dev-banner .dev-icon {
  font-size: 1.1rem;
}

.dev-role-badge {
  background: var(--accent);
  padding: 0.15rem 0.6rem;
  border-radius: 99px;
  font-size: 0.72rem;
  letter-spacing: 0.05em;
  font-family: 'Inter', sans-serif;
  text-transform: uppercase;
}

.dev-role-admin { background: var(--danger); }
.dev-role-user { background: var(--success); }

.dev-switcher {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  margin-left: 1rem;
  border-left: 1px solid rgba(255,255,255,0.2);
  padding-left: 1rem;
}

.dev-switch-label { color: #94a3b8; margin-right: 0.4rem; }

.dev-btn {
  background: rgba(255,255,255,0.1);
  border: 1px solid rgba(255,255,255,0.2);
  color: #fff;
  padding: 0.15rem 0.5rem;
  border-radius: 4px;
  font-size: 0.72rem;
  cursor: pointer;
  transition: all 0.2s;
  font-family: inherit;
}

.dev-btn:hover {
  background: rgba(255,255,255,0.2);
}

.dev-btn.active {
  background: var(--accent);
  border-color: var(--accent);
  font-weight: 600;
}

@media(max-width: 600px) {
  .dev-banner {
    flex-direction: column;
    padding: 0.5rem;
    gap: 0.5rem;
    font-size: 0.75rem;
  }
  .dev-switcher {
    margin-left: 0;
    border-left: none;
    padding-left: 0;
    border-top: 1px solid rgba(255,255,255,0.2);
    padding-top: 0.5rem;
    width: 100%;
    justify-content: center;
  }
}

/* Animations */
@keyframes fadeInDown {
  from { opacity: 0; transform: translateY(-12px); }
  to   { opacity: 1; transform: translateY(0); }
}
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(12px); }
  to   { opacity: 1; transform: translateY(0); }
}

.reveal {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity .5s ease, transform .5s ease;
}
.reveal.visible { opacity: 1; transform: translateY(0); }

/* =========================================================
   RESPONSIVE
   ========================================================= */
@media (max-width: 900px) {
  .sidebar {
    transform: translateX(-100%);
    transition: transform var(--transition), width var(--transition);
    width: var(--sidebar-w) !important;
  }

  .sidebar.mobile-open {
    transform: translateX(0);
  }

  .sidebar-overlay.visible { display: block; }

  .main-wrapper {
    margin-left: 0 !important;
  }

  .hamburger-btn { display: flex; }

  .kpi-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 540px) {
  .content-area { padding: 1rem; }
  .kpi-grid { grid-template-columns: 1fr; }
  .module-hub-grid { grid-template-columns: 1fr 1fr; }
  .form-row { grid-template-columns: 1fr; }
}