/* ============================================================
   StockMaster Pro — SaaS Design System
   Framework-free, single-file, shared-hosting compatible
   ============================================================ */

/* ── RESET ─────────────────────────────────────────────────── */
*,*::before,*::after{box-sizing:border-box}
html,body{margin:0;padding:0;height:100%}
img{max-width:100%;display:block}
button{font:inherit;cursor:pointer}
a{color:inherit;text-decoration:none}

/* ── DESIGN TOKENS ─────────────────────────────────────────── */
:root{
  /* Brand */
  --brand:       #4f46e5;
  --brand-dark:  #4338ca;
  --brand-light: #eef2ff;
  --brand-muted: #818cf8;

  /* Surface */
  --bg:          #f8fafc;
  --surface:     #ffffff;
  --surface-2:   #f1f5f9;
  --surface-3:   #e2e8f0;

  /* Sidebar */
  --sidebar-bg:      #0f172a;
  --sidebar-surface: #1e293b;
  --sidebar-border:  rgba(255,255,255,.06);
  --sidebar-text:    #94a3b8;
  --sidebar-active:  #4f46e5;
  --sidebar-w:       256px;

  /* Text */
  --text:        #0f172a;
  --text-2:      #475569;
  --text-3:      #94a3b8;

  /* Border */
  --border:      #e2e8f0;
  --border-2:    #cbd5e1;

  /* Status */
  --success:     #16a34a;
  --success-bg:  #f0fdf4;
  --success-bd:  #bbf7d0;
  --danger:      #dc2626;
  --danger-bg:   #fef2f2;
  --danger-bd:   #fecaca;
  --warning:     #d97706;
  --warning-bg:  #fffbeb;
  --warning-bd:  #fde68a;
  --info:        #2563eb;
  --info-bg:     #eff6ff;
  --info-bd:     #bfdbfe;

  /* Radius */
  --r-sm:  4px;
  --r:     8px;
  --r-lg:  12px;
  --r-xl:  16px;

  /* Shadow */
  --shadow-sm:  0 1px 2px rgba(15,23,42,.06);
  --shadow:     0 1px 3px rgba(15,23,42,.08), 0 1px 2px rgba(15,23,42,.04);
  --shadow-md:  0 4px 6px rgba(15,23,42,.07), 0 2px 4px rgba(15,23,42,.04);
  --shadow-lg:  0 10px 15px rgba(15,23,42,.08), 0 4px 6px rgba(15,23,42,.04);
  --shadow-xl:  0 20px 25px rgba(15,23,42,.1),  0 8px 10px rgba(15,23,42,.04);

  /* Topbar */
  --topbar-h: 60px;

  /* Transitions */
  --t: .18s ease;
}

/* ── TYPOGRAPHY ─────────────────────────────────────────────── */
body{
  font:14px/1.6 -apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Inter",Arial,sans-serif;
  color:var(--text);
  background:var(--bg);
}
h1{font-size:20px;font-weight:700;margin:0;letter-spacing:-.3px}
h2{font-size:15px;font-weight:700;margin:0 0 16px;color:var(--text)}
h3{font-size:13px;font-weight:700;margin:0 0 12px;color:var(--text-2);text-transform:uppercase;letter-spacing:.06em}
p{margin:0 0 8px;color:var(--text-2);font-size:13px}
small{font-size:11px;color:var(--text-3)}

/* ── LUCIDE ICONS ───────────────────────────────────────────── */
i[data-lucide]{display:inline-flex;align-items:center;justify-content:center;flex-shrink:0}
i[data-lucide] svg{width:16px;height:16px;stroke:currentColor;fill:none;stroke-width:2;stroke-linecap:round;stroke-linejoin:round}
.icon-sm i[data-lucide] svg,.icon-sm svg{width:14px;height:14px}
.icon-lg i[data-lucide] svg,.icon-lg svg{width:20px;height:20px}
.icon-xl i[data-lucide] svg,.icon-xl svg{width:24px;height:24px}

/* ── APP SHELL LAYOUT ───────────────────────────────────────── */
.app-shell{display:flex;min-height:100vh}

/* ── SIDEBAR ────────────────────────────────────────────────── */
.sidebar{
  width:var(--sidebar-w);
  background:var(--sidebar-bg);
  display:flex;
  flex-direction:column;
  position:fixed;
  inset:0 auto 0 0;
  z-index:100;
  transition:transform var(--t);
  overflow:hidden;
}
.sidebar-header{
  padding:20px 16px 16px;
  border-bottom:1px solid var(--sidebar-border);
}
.brand{display:flex;align-items:center;gap:10px}
.brand-icon{
  width:36px;height:36px;
  background:var(--brand);
  border-radius:var(--r);
  display:flex;align-items:center;justify-content:center;
  color:#fff;flex-shrink:0;
}
.brand-icon i[data-lucide] svg{width:20px;height:20px;stroke-width:2}
.brand-text{display:flex;flex-direction:column;line-height:1.1}
.brand-name{font-size:16px;font-weight:800;color:#fff;letter-spacing:-.3px}
.brand-tag{font-size:10px;font-weight:700;color:var(--brand-muted);text-transform:uppercase;letter-spacing:.1em}

.sidebar-nav{flex:1;padding:12px 10px;overflow-y:auto;display:flex;flex-direction:column;gap:2px}
.sidebar-nav::-webkit-scrollbar{width:4px}
.sidebar-nav::-webkit-scrollbar-track{background:transparent}
.sidebar-nav::-webkit-scrollbar-thumb{background:var(--sidebar-border);border-radius:2px}

.nav-link{
  display:flex;align-items:center;gap:10px;
  padding:9px 10px;
  border-radius:var(--r-sm);
  color:var(--sidebar-text);
  font-size:13px;font-weight:500;
  transition:background var(--t),color var(--t);
  cursor:pointer;
}
.nav-link:hover{background:var(--sidebar-surface);color:#fff}
.nav-link.active{background:var(--brand);color:#fff;font-weight:600}
.nav-link.active .nav-icon{color:#fff}
.nav-icon{width:20px;height:20px;display:flex;align-items:center;justify-content:center;flex-shrink:0;color:var(--sidebar-text)}
.nav-link:hover .nav-icon{color:#fff}
.nav-icon i[data-lucide] svg{width:16px;height:16px}
.nav-label{flex:1;white-space:nowrap}
.nav-link--logout{color:#f87171}
.nav-link--logout:hover{background:rgba(248,113,113,.1);color:#f87171}
.nav-link--logout .nav-icon{color:#f87171}

.sidebar-footer{padding:12px 10px;border-top:1px solid var(--sidebar-border)}

/* ── MAIN WRAP ──────────────────────────────────────────────── */
.main-wrap{
  margin-left:var(--sidebar-w);
  flex:1;
  display:flex;
  flex-direction:column;
  min-width:0;
  min-height:100vh;
}

/* ── TOPBAR ─────────────────────────────────────────────────── */
.topbar{
  height:var(--topbar-h);
  background:var(--surface);
  border-bottom:1px solid var(--border);
  display:flex;align-items:center;justify-content:space-between;
  padding:0 24px;
  position:sticky;top:0;z-index:50;
  gap:16px;
}
.topbar-left{display:flex;align-items:center;gap:14px}
.topbar-right{display:flex;align-items:center;gap:10px}
.page-title h1{font-size:17px;font-weight:700;margin:0}
.breadcrumb{font-size:11px;color:var(--text-3);display:flex;align-items:center;gap:4px;margin-top:1px}
.breadcrumb i[data-lucide] svg{width:12px;height:12px}

.sidebar-toggle{
  display:none;
  width:36px;height:36px;
  background:transparent;border:1px solid var(--border);
  border-radius:var(--r-sm);
  align-items:center;justify-content:center;
  color:var(--text-2);
  transition:background var(--t);
}
.sidebar-toggle:hover{background:var(--surface-2)}
.sidebar-toggle i[data-lucide] svg{width:18px;height:18px}

.user-chip{display:flex;align-items:center;gap:8px}
.user-avatar{
  width:32px;height:32px;border-radius:50%;
  background:var(--brand);
  color:#fff;font-size:13px;font-weight:700;
  display:flex;align-items:center;justify-content:center;
  flex-shrink:0;
}
.user-name{font-size:13px;font-weight:600;color:var(--text-2)}

/* ── PAGE CONTENT ───────────────────────────────────────────── */
.page-content{flex:1;padding:24px;display:flex;flex-direction:column;gap:20px}

/* ── BUTTONS ────────────────────────────────────────────────── */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:6px;
  padding:8px 14px;
  border-radius:var(--r-sm);
  border:1px solid var(--border);
  background:var(--surface);
  color:var(--text);
  font:600 13px/1 inherit;
  cursor:pointer;
  transition:all var(--t);
  white-space:nowrap;
  text-decoration:none;
}
.btn:hover{border-color:var(--border-2);background:var(--surface-2);text-decoration:none}
.btn i[data-lucide] svg{width:14px;height:14px}

.btn-primary{background:var(--brand);border-color:var(--brand);color:#fff}
.btn-primary:hover{background:var(--brand-dark);border-color:var(--brand-dark);color:#fff}
.btn-danger{background:var(--danger);border-color:var(--danger);color:#fff}
.btn-danger:hover{background:#b91c1c;border-color:#b91c1c;color:#fff}
.btn-success{background:var(--success);border-color:var(--success);color:#fff}
.btn-success:hover{background:#15803d;border-color:#15803d;color:#fff}
.btn-ghost{background:transparent;border-color:transparent;color:var(--text-2)}
.btn-ghost:hover{background:var(--surface-2);color:var(--text);border-color:var(--border)}
.btn-outline{background:transparent;border-color:var(--brand);color:var(--brand)}
.btn-outline:hover{background:var(--brand-light)}

.btn-sm{padding:5px 10px;font-size:12px;border-radius:4px}
.btn-sm i[data-lucide] svg{width:12px;height:12px}
.btn-lg{padding:11px 20px;font-size:14px;border-radius:var(--r)}
.btn-icon{padding:7px;width:32px;height:32px}

/* Legacy aliases for old views */
.button{display:inline-flex;align-items:center;justify-content:center;gap:6px;padding:8px 14px;border-radius:var(--r-sm);border:1px solid var(--border);background:var(--surface);color:var(--text);font:600 13px/1 inherit;cursor:pointer;transition:all var(--t);white-space:nowrap;text-decoration:none}
.button:hover{border-color:var(--border-2);background:var(--surface-2);text-decoration:none}
.button.primary{background:var(--brand);border-color:var(--brand);color:#fff}
.button.primary:hover{background:var(--brand-dark);border-color:var(--brand-dark);color:#fff}
.button.danger{background:var(--danger);border-color:var(--danger);color:#fff}
.button.danger:hover{background:#b91c1c;border-color:#b91c1c;color:#fff}
.button.ghost{background:transparent;border-color:transparent;color:var(--text-2)}
.button.ghost:hover{background:var(--surface-2);color:var(--text)}
.button.small,.button.sm{padding:5px 10px;font-size:12px;border-radius:4px}
.button.whatsapp-button{background:#25d366;border-color:#25d366;color:#fff}
.button.whatsapp-button:hover{background:#1ebe5d;border-color:#1ebe5d;color:#fff}

/* ── CARDS / PANELS ─────────────────────────────────────────── */
.panel{
  background:var(--surface);
  border:1px solid var(--border);
  border-radius:var(--r-lg);
  padding:20px;
  box-shadow:var(--shadow-sm);
}
.panel h2{
  font-size:14px;font-weight:700;margin:0 0 16px;
  display:flex;align-items:center;gap:8px;
  color:var(--text);
}
.panel h2 i[data-lucide] svg{width:16px;height:16px;color:var(--brand)}

.section-head{
  display:flex;align-items:flex-start;justify-content:space-between;
  gap:16px;margin-bottom:18px;flex-wrap:wrap;
}
.section-head>div{flex:1;min-width:0}
.section-head h2{margin-bottom:2px}
.section-head p{margin:0;font-size:12px;color:var(--text-3)}
.section-head .actions{display:flex;gap:8px;align-items:center;flex-shrink:0;flex-wrap:wrap}

/* ── METRIC CARDS ───────────────────────────────────────────── */
.metrics{
  display:grid;
  grid-template-columns:repeat(auto-fit,minmax(160px,1fr));
  gap:16px;
}
.metric-card{
  background:var(--surface);
  border:1px solid var(--border);
  border-radius:var(--r-lg);
  padding:18px;
  box-shadow:var(--shadow-sm);
  display:flex;align-items:flex-start;justify-content:space-between;gap:12px;
  transition:box-shadow var(--t),transform var(--t);
}
.metric-card:hover{box-shadow:var(--shadow-md);transform:translateY(-1px)}
.metric-card-body{flex:1;min-width:0}
.metric-card-label{
  font-size:11px;font-weight:700;text-transform:uppercase;letter-spacing:.07em;
  color:var(--text-3);margin-bottom:8px;
}
.metric-card-value{font-size:26px;font-weight:800;color:var(--text);line-height:1;letter-spacing:-.5px}
.metric-card-sub{font-size:11px;color:var(--text-3);margin-top:4px}
.metric-card-icon{
  width:40px;height:40px;border-radius:var(--r);
  display:flex;align-items:center;justify-content:center;
  flex-shrink:0;
}
.metric-card-icon i[data-lucide] svg{width:20px;height:20px}

/* Metric color variants */
.metric-card:nth-child(1) .metric-card-icon{background:#eef2ff;color:var(--brand)}
.metric-card:nth-child(2) .metric-card-icon{background:#eff6ff;color:#2563eb}
.metric-card:nth-child(3) .metric-card-icon{background:#f0fdf4;color:#16a34a}
.metric-card:nth-child(4) .metric-card-icon{background:#fff7ed;color:#ea580c}
.metric-card:nth-child(5) .metric-card-icon{background:#fef2f2;color:#dc2626}
.metric-card:nth-child(6) .metric-card-icon{background:#f5f3ff;color:#7c3aed}

/* Legacy .metrics>div support */
.metrics>div:not(.metric-card){
  background:var(--surface);border:1px solid var(--border);border-radius:var(--r-lg);
  padding:18px;box-shadow:var(--shadow-sm);
  border-top:3px solid var(--brand);
}
.metrics>div:not(.metric-card) span{display:block;color:var(--text-3);font-size:11px;text-transform:uppercase;font-weight:700;letter-spacing:.06em;margin-bottom:6px}
.metrics>div:not(.metric-card) strong{display:block;font-size:24px;color:var(--text);font-weight:800}
.metrics>div:not(.metric-card):nth-child(2){border-top-color:#2563eb}
.metrics>div:not(.metric-card):nth-child(3){border-top-color:#16a34a}
.metrics>div:not(.metric-card):nth-child(4){border-top-color:#ea580c}
.metrics>div:not(.metric-card):nth-child(5){border-top-color:#dc2626}
.metrics>div:not(.metric-card):nth-child(6){border-top-color:#7c3aed}

/* ── TABLES ─────────────────────────────────────────────────── */
.table-wrap{overflow-x:auto;margin:-20px;padding:0 0 0 0;border-radius:0 0 var(--r-lg) var(--r-lg)}
table{width:100%;border-collapse:collapse;font-size:13px}
table th{
  background:var(--surface-2);
  color:var(--text-3);
  font-size:11px;font-weight:700;text-transform:uppercase;letter-spacing:.06em;
  padding:10px 14px;
  text-align:left;
  border-bottom:1px solid var(--border);
  white-space:nowrap;
  position:sticky;top:0;
}
table td{
  padding:11px 14px;
  border-bottom:1px solid var(--border);
  color:var(--text);
  vertical-align:middle;
}
table tbody tr:last-child td{border-bottom:none}
table tbody tr{transition:background var(--t)}
table tbody tr:hover{background:var(--surface-2)}
table .badge{display:inline-flex;align-items:center;gap:4px;padding:3px 8px;border-radius:999px;font-size:11px;font-weight:700}
.table-actions{display:flex;gap:4px;align-items:center;opacity:.6;transition:opacity var(--t)}
table tr:hover .table-actions{opacity:1}
.link-strong{font-weight:600;color:var(--brand)}
.link-strong:hover{text-decoration:underline}
.thumb{width:40px;height:40px;object-fit:cover;border-radius:var(--r-sm);border:1px solid var(--border)}
.muted{color:var(--text-3);font-size:12px}

/* Mini table inside panels */
.mini-table{font-size:12px}
.mini-table th{font-size:10px;padding:7px 10px}
.mini-table td{padding:8px 10px}

/* ── BADGES ─────────────────────────────────────────────────── */
.badge{display:inline-flex;align-items:center;gap:4px;padding:3px 8px;border-radius:999px;font-size:11px;font-weight:700;background:var(--surface-2);color:var(--text-2)}
.badge.success,.badge.paid{background:var(--success-bg);color:var(--success);border:1px solid var(--success-bd)}
.badge.danger,.badge.void,.badge.unpaid{background:var(--danger-bg);color:var(--danger);border:1px solid var(--danger-bd)}
.badge.warning,.badge.partial{background:var(--warning-bg);color:var(--warning);border:1px solid var(--warning-bd)}
.badge.info{background:var(--info-bg);color:var(--info);border:1px solid var(--info-bd)}
.badge.sale{background:#e0e7ff;color:#4338ca;border:1px solid #c7d2fe}
.badge.sale_void,.badge.sale-void{background:var(--danger-bg);color:var(--danger);border:1px solid var(--danger-bd)}
.badge.purchase{background:var(--success-bg);color:var(--success);border:1px solid var(--success-bd)}
.badge.adjustment_in{background:#f0fdf4;color:#15803d;border:1px solid #bbf7d0}
.badge.adjustment_out{background:#fff7ed;color:#ea580c;border:1px solid #fed7aa}
.badge i[data-lucide] svg{width:10px;height:10px}

/* ── ALERTS ─────────────────────────────────────────────────── */
.alert{
  padding:12px 16px;border-radius:var(--r);
  display:flex;align-items:flex-start;gap:10px;
  font-size:13px;border:1px solid transparent;
}
.alert i[data-lucide] svg{width:16px;height:16px;flex-shrink:0;margin-top:1px}
.alert.success{background:var(--success-bg);color:var(--success);border-color:var(--success-bd)}
.alert.danger{background:var(--danger-bg);color:var(--danger);border-color:var(--danger-bd)}
.alert.warning{background:var(--warning-bg);color:var(--warning);border-color:var(--warning-bd)}
.alert.info{background:var(--info-bg);color:var(--info);border-color:var(--info-bd)}

/* ── FORMS ──────────────────────────────────────────────────── */
label{display:flex;flex-direction:column;gap:5px;font-size:13px;font-weight:600;color:var(--text-2)}
label input,label select,label textarea,
input[type=text],input[type=email],input[type=number],
input[type=date],input[type=password],input[type=file],
select,textarea{
  padding:8px 11px;
  border:1px solid var(--border);
  border-radius:var(--r-sm);
  font:13px/1.5 inherit;
  background:var(--surface);
  color:var(--text);
  transition:border-color var(--t),box-shadow var(--t);
  width:100%;
}
label input:focus,label select:focus,label textarea:focus,
input:focus,select:focus,textarea:focus{
  outline:none;
  border-color:var(--brand);
  box-shadow:0 0 0 3px rgba(79,70,229,.12);
}
textarea{resize:vertical;min-height:80px}
.form-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:14px}
.form-grid .wide{grid-column:1/-1}
.form-grid h3.wide{grid-column:1/-1;padding-top:8px;border-top:1px solid var(--border);margin-top:4px}
.stack{display:flex;flex-direction:column;gap:14px}
.actions{display:flex;gap:8px;flex-wrap:wrap;align-items:center}
.sticky-actions{position:sticky;bottom:0;background:var(--surface);padding:14px 0 4px;border-top:1px solid var(--border);margin-top:8px;z-index:5}
.select-action{display:flex;gap:6px;align-items:center}
.select-action select{flex:1}

/* Segmented control */
.segmented{display:flex;gap:0;border:1px solid var(--border);border-radius:var(--r-sm);overflow:hidden;background:var(--surface-2)}
.segmented label{flex:1;flex-direction:row;gap:6px;padding:7px 12px;justify-content:center;cursor:pointer;font-size:12px;font-weight:600;border-radius:0;border:none;background:transparent;margin:0;color:var(--text-2);transition:background var(--t),color var(--t)}
.segmented label:has(input:checked){background:var(--surface);color:var(--brand);box-shadow:var(--shadow-sm)}
.segmented input[type=radio]{display:none}

/* ── GRID HELPERS ───────────────────────────────────────────── */
.grid{display:grid;gap:20px}
.grid.two{grid-template-columns:repeat(2,minmax(0,1fr))}
.grid.three{grid-template-columns:repeat(3,minmax(0,1fr))}
.grid.four{grid-template-columns:repeat(4,minmax(0,1fr))}
@media(max-width:900px){.grid.two,.grid.three,.grid.four{grid-template-columns:1fr}}

/* ── EMPTY STATE ────────────────────────────────────────────── */
.empty-state{text-align:center;padding:48px 20px;color:var(--text-3)}
.empty-state i[data-lucide] svg{width:40px;height:40px;margin:0 auto 12px;opacity:.4}
.empty-state h3{font-size:15px;color:var(--text-2);margin:0 0 6px}
.empty-state p{font-size:13px;margin:0 0 16px}

/* ── AUTH SHELL ─────────────────────────────────────────────── */
.auth-shell{
  min-height:100vh;
  background:linear-gradient(135deg,#eef2ff 0,#f8fafc 60%,#e0f2fe 100%);
  display:grid;place-items:center;padding:20px;
}
.login-panel{
  background:var(--surface);
  max-width:900px;width:100%;
  border-radius:var(--r-xl);
  overflow:hidden;
  box-shadow:var(--shadow-xl);
  display:grid;grid-template-columns:1.1fr 1fr;
  border:1px solid var(--border);
}
.login-brand{
  background:linear-gradient(150deg,var(--brand) 0,#6d28d9 100%);
  color:#fff;padding:52px 44px;
  display:flex;flex-direction:column;justify-content:center;gap:20px;
}
.login-brand-icon{
  width:56px;height:56px;background:rgba(255,255,255,.15);
  border-radius:var(--r-lg);display:flex;align-items:center;justify-content:center;
}
.login-brand-icon i[data-lucide] svg{width:30px;height:30px;stroke:#fff}
.login-brand h1{font-size:28px;font-weight:800;margin:0;letter-spacing:-.5px}
.login-brand p{font-size:14px;opacity:.85;margin:0;line-height:1.6}
.login-brand-features{display:flex;flex-direction:column;gap:8px;margin-top:8px}
.login-brand-features span{display:flex;align-items:center;gap:8px;font-size:13px;opacity:.9}
.login-brand-features span i[data-lucide] svg{width:14px;height:14px}
.login-form-side{padding:52px 44px;display:flex;flex-direction:column;justify-content:center;gap:16px}
.login-form-side h2{font-size:22px;font-weight:700;margin:0 0 4px}
.login-form-side p{margin:0 0 16px;color:var(--text-3);font-size:13px}
.login-form-side label{margin-bottom:4px}
.login-form-side .btn-primary{margin-top:4px;width:100%;padding:11px}
@media(max-width:700px){.login-panel{grid-template-columns:1fr}.login-brand{padding:32px 28px}.login-form-side{padding:32px 28px}}

/* ── FILTERS BAR ────────────────────────────────────────────── */
.filters{
  display:flex;flex-wrap:wrap;gap:10px;align-items:flex-end;
  padding:16px;
  background:var(--surface);
  border:1px solid var(--border);
  border-radius:var(--r-lg);
  margin-bottom:4px;
}
.filters label{margin:0;min-width:140px}
.filters label input,.filters label select{min-width:0}

/* ── BILLING LAYOUT ─────────────────────────────────────────── */
.billing-grid{display:grid;grid-template-columns:1fr 300px;gap:20px;align-items:start}
@media(max-width:900px){.billing-grid{grid-template-columns:1fr}}
.billing-lines{display:flex;flex-direction:column;gap:10px;margin:14px 0}
.billing-line{
  display:grid;
  grid-template-columns:3fr 80px 100px 80px 1fr auto auto;
  gap:8px;align-items:end;
  padding:12px;
  background:var(--surface-2);
  border:1px solid var(--border);
  border-radius:var(--r);
}
.billing-line label{margin:0}
.billing-line label input,.billing-line label select{width:100%}
.line-stock{font-size:11px;color:var(--text-3);padding-bottom:6px;white-space:nowrap}
.line-total-box{text-align:right;padding-bottom:6px}
.line-total-box span{display:block;font-size:10px;color:var(--text-3);text-transform:uppercase;letter-spacing:.05em}
.line-total-box strong{font-size:15px;font-weight:700;color:var(--text)}
@media(max-width:900px){.billing-line{grid-template-columns:1fr 1fr;grid-template-rows:auto}}

.billing-summary{
  background:var(--surface);
  border:1px solid var(--border);
  border-radius:var(--r-lg);
  padding:20px;
  position:sticky;top:calc(var(--topbar-h) + 16px);
  box-shadow:var(--shadow);
}
.billing-summary h3{font-size:13px;font-weight:700;color:var(--text);margin-bottom:14px;text-transform:uppercase;letter-spacing:.06em}
.billing-summary dl{display:grid;grid-template-columns:1fr auto;gap:6px 12px;align-items:center;font-size:13px;margin:0 0 14px}
.billing-summary dt{color:var(--text-2)}
.billing-summary dd{text-align:right;font-weight:600;margin:0}
.billing-summary dd input{text-align:right;width:100px}
.billing-summary .bill-total-row dt,.billing-summary .bill-total-row dd{font-size:15px;font-weight:800;color:var(--brand);padding-top:8px;border-top:2px solid var(--border)}
.paid-quick-fill{display:flex;gap:4px;align-items:center;justify-content:flex-end}
.paid-quick-fill input{flex:1;min-width:0}

/* ── LINE FORM (Purchases) ──────────────────────────────────── */
.line-box{display:flex;flex-direction:column;gap:8px;margin:10px 0}
.line-row{
  display:grid;
  grid-template-columns:3fr 80px 100px 80px auto auto;
  gap:8px;align-items:center;
  padding:10px;
  background:var(--surface-2);
  border:1px solid var(--border);
  border-radius:var(--r);
}
.line-row select,.line-row input{width:100%}
.line-row strong[data-line-total]{font-weight:700;color:var(--brand);text-align:right;display:block;min-width:70px}

/* ── SALE DETAIL MODAL ──────────────────────────────────────── */
.sale-detail-modal{
  position:fixed;inset:0;z-index:200;
  display:flex;align-items:flex-start;justify-content:center;
  background:rgba(15,23,42,.55);
  padding:40px 20px;
  overflow-y:auto;
  backdrop-filter:blur(4px);
}
.sale-detail-modal[hidden]{display:none}
.sale-detail-modal-card{
  background:var(--surface);
  border-radius:var(--r-xl);
  box-shadow:var(--shadow-xl);
  width:100%;max-width:900px;
  padding:28px;
}
.sale-detail-box{display:flex;flex-direction:column;gap:18px}
.sale-detail-totals{
  display:flex;flex-wrap:wrap;gap:14px;
  padding:14px;background:var(--surface-2);border-radius:var(--r);
  font-size:13px;
}
.sale-detail-totals strong{font-weight:700;color:var(--brand)}
.sale-detail-ledger{display:flex;flex-direction:column;gap:8px}
.sale-detail-ledger strong{font-size:12px;font-weight:700;text-transform:uppercase;letter-spacing:.06em;color:var(--text-3)}
.sale-paid-note{
  padding:12px 16px;background:var(--success-bg);border:1px solid var(--success-bd);
  border-radius:var(--r);display:flex;flex-direction:column;gap:2px;
}
.sale-paid-note strong{color:var(--success);font-size:13px}
.sale-paid-note span{color:var(--success);font-size:12px;opacity:.8}
.sale-payment-form{
  display:grid;grid-template-columns:repeat(auto-fit,minmax(130px,1fr));gap:10px;align-items:end;
  padding:14px;background:var(--surface-2);border-radius:var(--r);
}
.sale-payment-form label{margin:0}
.sale-return-inline{display:flex;gap:6px;align-items:center;flex-wrap:wrap;margin-top:4px}
.sale-return-inline input{width:80px}
.sale-detail-source{display:none}
body.sale-detail-modal-open .sale-detail-modal{display:flex}

/* ── PURCHASE INLINE ────────────────────────────────────────── */
.purchase-item-return{display:flex;flex-direction:column;gap:4px;padding:6px 0;border-bottom:1px solid var(--border);font-size:12px}
.purchase-item-return:last-child{border-bottom:none}
.purchase-item-return strong{font-size:13px;font-weight:600}
.purchase-return-inline{display:flex;gap:6px;align-items:center;flex-wrap:wrap;margin-top:4px}
.purchase-return-inline input{width:80px}
.purchase-payment-inline{display:flex;gap:6px;align-items:center;flex-wrap:wrap}
.purchase-payment-inline input,.purchase-payment-inline select{width:auto;min-width:60px}

/* ── PRODUCT FORM ───────────────────────────────────────────── */
.product-edit-panel{margin-bottom:4px}
.product-form-card{position:relative}
.item-form-grid{display:grid;grid-template-columns:1fr 240px;gap:20px;align-items:start}
@media(max-width:800px){.item-form-grid{grid-template-columns:1fr}}
.item-main-fields{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:12px}
.form-divider{height:1px;background:var(--border);margin:16px 0}
.product-modal-close{position:absolute;top:0;right:0}

/* Image uploader */
.image-uploader{display:flex;flex-direction:column;gap:10px}
.upload-tile{
  border:2px dashed var(--border);border-radius:var(--r);
  padding:20px;text-align:center;cursor:pointer;
  font-size:13px;color:var(--text-3);
  transition:border-color var(--t),background var(--t);
  min-height:120px;display:flex;align-items:center;justify-content:center;flex-direction:column;gap:8px;
}
.upload-tile:hover{border-color:var(--brand);background:var(--brand-light)}
.upload-tile img{max-height:100px;max-width:100%;object-fit:contain;border-radius:var(--r-sm)}
.upload-tile input[type=file]{display:none}
.upload-help{font-size:11px;color:var(--text-3);margin-top:4px}
.upload-inline{
  display:flex;align-items:center;gap:10px;flex-wrap:wrap;
  padding:8px 12px;border:1px solid var(--border);border-radius:var(--r-sm);
  cursor:pointer;background:var(--surface-2);
}
.upload-inline img{height:36px;width:auto;border-radius:var(--r-sm)}
.upload-inline input[type=file]{display:none}

/* Table bulk actions */
.table-bulk-actions{margin-bottom:10px;padding:10px;background:var(--surface-2);border-radius:var(--r);display:flex;gap:8px;align-items:center;border:1px solid var(--border)}

/* ── SETUP / SETTINGS ───────────────────────────────────────── */
.setup-shell{display:grid;grid-template-columns:1fr 280px;gap:20px;align-items:start}
@media(max-width:900px){.setup-shell{grid-template-columns:1fr}}
.setup-card{max-height:none}
.setup-aside{display:flex;flex-direction:column;gap:16px;position:sticky;top:calc(var(--topbar-h) + 16px)}
.setup-note{padding:12px;background:var(--warning-bg);border:1px solid var(--warning-bd);border-radius:var(--r);font-size:12px;color:var(--warning)}
.setup-note strong{color:var(--warning)}

/* ── STOCK / MOVEMENTS ──────────────────────────────────────── */
.movement-badge{display:inline-flex;align-items:center;gap:4px;padding:3px 8px;border-radius:999px;font-size:11px;font-weight:700;background:var(--surface-2);color:var(--text-2)}

/* ── LEDGER ─────────────────────────────────────────────────── */
.ledger-balance{font-size:20px;font-weight:800;color:var(--brand)}
.ledger-balance.negative{color:var(--danger)}

/* ── PUBLIC SHELL ───────────────────────────────────────────── */
.public-shell{min-height:100vh;background:var(--bg);padding:20px}

/* ── PRINT ──────────────────────────────────────────────────── */
@media print{
  .sidebar,.topbar,.btn,.button,.actions,.no-print,.table-bulk-actions,.filters{display:none !important}
  .app-shell,.main-wrap{display:block !important;margin:0 !important}
  .panel{box-shadow:none;border:1px solid #ccc}
  body{background:#fff}
}

/* ── MOBILE RESPONSIVE ──────────────────────────────────────── */
@media(max-width:1024px){
  .sidebar{transform:translateX(-100%)}
  .sidebar.open{transform:translateX(0)}
  .main-wrap{margin-left:0}
  .sidebar-toggle{display:flex}
  .sidebar-overlay{
    display:none;position:fixed;inset:0;z-index:90;
    background:rgba(15,23,42,.4);backdrop-filter:blur(2px);
  }
  .sidebar-overlay.show{display:block}
  .topbar{padding:0 16px}
  .page-content{padding:16px}
  .user-name{display:none}
  .billing-line{grid-template-columns:1fr 1fr;gap:8px}
  .billing-grid{grid-template-columns:1fr}
}
@media(max-width:640px){
  .metrics{grid-template-columns:repeat(2,1fr)}
  .setup-shell{grid-template-columns:1fr}
  .form-grid{grid-template-columns:1fr}
}

/* ── ADMIN FOOTER ───────────────────────────────────────────── */
.admin-footer{
  padding:12px 24px;
  font-size:11px;
  color:var(--text-3);
  border-top:1px solid var(--border);
  background:var(--surface);
  text-align:center;
}
.admin-footer a{color:var(--text-3);text-decoration:underline}
.admin-footer a:hover{color:var(--brand)}

/* ── PUBLIC DEV CREDIT ──────────────────────────────────────── */
.stock-dev-credit{
  text-align:center;
  padding:12px;
  font-size:11px;
  color:#8a9aa5;
}
.stock-dev-credit a{color:#8a9aa5;text-decoration:underline}
.stock-dev-credit a:hover{color:#146c5c}