:root {
  --primary: #2563eb;
  --primary-dark: #1d4ed8;
  --success: #10b981;
  --danger: #ef4444;
  --warning: #f59e0b;
  --info: #06b6d4;
  --bg: #f6f8fb;
  --surface: #ffffff;
  --border: #e5e7eb;
  --text: #0f172a;
  --text-muted: #64748b;
  --sidebar-bg: #0f172a;
  --sidebar-text: #cbd5e1;
  --sidebar-active: #2563eb;
  --shadow: 0 1px 3px rgba(15, 23, 42, .06), 0 1px 2px rgba(15, 23, 42, .04);
  --shadow-lg: 0 10px 30px rgba(15, 23, 42, .08);
  --radius: 14px;
}
[data-bs-theme="dark"] {
  --bg: #0b1020;
  --surface: #131a2c;
  --border: #1f2a44;
  --text: #e2e8f0;
  --text-muted: #94a3b8;
  --sidebar-bg: #070b18;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; height: 100%; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Inter, sans-serif;
  background: var(--bg);
  color: var(--text);
  -webkit-font-smoothing: antialiased;
  font-size: 14.5px;
}

/* ===== Sidebar ===== */
.sidebar {
  position: fixed;
  top: 0; left: 0; bottom: 0;
  width: 250px;
  background: var(--sidebar-bg);
  color: var(--sidebar-text);
  display: flex;
  flex-direction: column;
  z-index: 1040;
  transition: transform .25s ease;
}
.sidebar-header {
  display: flex; align-items: center;
  padding: 18px 18px 14px;
  border-bottom: 1px solid rgba(255,255,255,.06);
}
.brand { display: flex; align-items: center; gap: 10px; color: #fff; text-decoration: none; font-weight: 700; font-size: 18px; }
.brand-logo {
  width: 36px; height: 36px; border-radius: 10px;
  background: linear-gradient(135deg, #2563eb, #06b6d4);
  display: grid; place-items: center; color: #fff; font-size: 18px;
}
.sidebar-nav { padding: 12px 8px; flex: 1; overflow-y: auto; }
.sidebar-nav .nav-link {
  display: flex; align-items: center; gap: 12px;
  padding: 10px 14px; border-radius: 10px; color: var(--sidebar-text);
  text-decoration: none; font-weight: 500; margin-bottom: 2px;
  transition: background .15s, color .15s;
}
.sidebar-nav .nav-link i { font-size: 18px; width: 20px; text-align: center; }
.sidebar-nav .nav-link:hover { background: rgba(255,255,255,.05); color: #fff; }
.sidebar-nav .nav-link.active { background: var(--sidebar-active); color: #fff; box-shadow: 0 4px 12px rgba(37,99,235,.4); }

.sidebar-footer { padding: 12px; border-top: 1px solid rgba(255,255,255,.06); }
.user-card { display: flex; align-items: center; gap: 10px; padding: 8px; margin-bottom: 8px; }
.user-avatar { width: 38px; height: 38px; border-radius: 50%; background: linear-gradient(135deg,#10b981,#06b6d4); display: grid; place-items: center; color: #fff; font-weight: 700; }
.user-meta { flex: 1; min-width: 0; }
.user-name { color: #fff; font-weight: 600; font-size: 13px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.user-role { color: var(--sidebar-text); font-size: 11px; }

.sidebar-overlay { position: fixed; inset: 0; background: rgba(0,0,0,.4); z-index: 1030; display: none; }
.sidebar-overlay.show { display: block; }

/* ===== Main ===== */
.main-content { margin-left: 250px; min-height: 100vh; padding-bottom: 60px; }
.main-content.no-sidebar { margin-left: 0; padding-bottom: 0; }

.topbar {
  position: sticky; top: 0; z-index: 100;
  display: flex; align-items: center; gap: 12px;
  background: var(--surface); padding: 12px 22px;
  border-bottom: 1px solid var(--border);
  backdrop-filter: blur(8px);
}
.topbar-title { font-weight: 600; font-size: 18px; flex: 1; }
.topbar-actions { display: flex; gap: 8px; align-items: center; }

.btn-icon {
  width: 38px; height: 38px; border-radius: 10px;
  display: inline-grid; place-items: center;
  border: 1px solid var(--border); background: var(--surface); color: var(--text);
}
.btn-icon:hover { background: var(--bg); }

.page { padding: 22px; max-width: 1400px; margin: 0 auto; }

/* ===== Cards / KPI ===== */
.card {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius); box-shadow: var(--shadow);
}
.card-header { background: transparent; border-bottom: 1px solid var(--border); padding: 14px 18px; font-weight: 600; }
.card-body { padding: 18px; }

.kpi-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 16px; margin-bottom: 22px; }
.kpi-card {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 18px;
  box-shadow: var(--shadow);
  display: flex; gap: 14px; align-items: flex-start;
}
.kpi-icon { width: 48px; height: 48px; border-radius: 12px; display: grid; place-items: center; font-size: 22px; flex-shrink: 0; }
.kpi-icon.bg-primary-soft { background: rgba(37,99,235,.12); color: var(--primary); }
.kpi-icon.bg-success-soft { background: rgba(16,185,129,.12); color: var(--success); }
.kpi-icon.bg-danger-soft  { background: rgba(239,68,68,.12);  color: var(--danger); }
.kpi-icon.bg-warning-soft { background: rgba(245,158,11,.12); color: var(--warning); }
.kpi-icon.bg-info-soft    { background: rgba(6,182,212,.12);  color: var(--info); }
.kpi-label { color: var(--text-muted); font-size: 13px; margin: 0 0 4px; }
.kpi-value { font-size: 22px; font-weight: 700; margin: 0; line-height: 1.2; }
.kpi-sub { color: var(--text-muted); font-size: 12px; margin-top: 4px; }

/* ===== Tables ===== */
.table { color: var(--text); margin: 0; }
.table > :not(caption) > * > * { background: transparent; border-bottom-color: var(--border); padding: 12px 14px; }
.table thead th { font-size: 12px; text-transform: uppercase; letter-spacing: .04em; color: var(--text-muted); font-weight: 600; border-top: 0; }
.table tbody tr:hover { background: var(--bg); }

/* ===== Forms ===== */
.form-control, .form-select {
  background: var(--surface); border: 1px solid var(--border); color: var(--text);
  border-radius: 10px; padding: 9px 12px;
}
.form-control:focus, .form-select:focus { border-color: var(--primary); box-shadow: 0 0 0 3px rgba(37,99,235,.15); background: var(--surface); color: var(--text); }
.form-label { font-weight: 500; font-size: 13px; margin-bottom: 6px; color: var(--text); }

/* ===== Buttons ===== */
.btn { border-radius: 10px; font-weight: 500; padding: 8px 14px; }
.btn-primary { background: var(--primary); border-color: var(--primary); }
.btn-primary:hover { background: var(--primary-dark); border-color: var(--primary-dark); }

/* ===== Badges ===== */
.badge { font-weight: 500; padding: 5px 9px; border-radius: 8px; font-size: 11px; }
.badge.soft-success { background: rgba(16,185,129,.12); color: var(--success); }
.badge.soft-danger  { background: rgba(239,68,68,.12);  color: var(--danger); }
.badge.soft-warning { background: rgba(245,158,11,.18); color: #b45309; }
.badge.soft-info    { background: rgba(6,182,212,.12);  color: var(--info); }
.badge.soft-primary { background: rgba(37,99,235,.12);  color: var(--primary); }
[data-bs-theme="dark"] .badge.soft-warning { color: #fbbf24; }

/* ===== Product cards ===== */
.product-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: 16px; }
.product-card {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--radius); overflow: hidden;
  box-shadow: var(--shadow);
  transition: transform .15s, box-shadow .15s;
  display: flex; flex-direction: column;
}
.product-card:hover { transform: translateY(-2px); box-shadow: var(--shadow-lg); }
.product-img {
  height: 140px; background: var(--bg);
  display: grid; place-items: center; font-size: 48px; color: var(--text-muted);
  background-size: cover; background-position: center;
}
.product-body { padding: 14px; flex: 1; display: flex; flex-direction: column; }
.product-name { font-weight: 600; font-size: 14px; margin: 0 0 4px; min-height: 38px; line-height: 1.3; }
.product-sku { font-size: 11px; color: var(--text-muted); margin-bottom: 8px; }
.product-price { font-size: 18px; font-weight: 700; color: var(--primary); margin-top: auto; }
.product-stock { font-size: 12px; color: var(--text-muted); }

/* ===== Mobile bottom nav ===== */
.mobile-nav {
  position: fixed; bottom: 0; left: 0; right: 0;
  background: var(--surface); border-top: 1px solid var(--border);
  display: flex; justify-content: space-around; align-items: center;
  padding: 6px 4px calc(6px + env(safe-area-inset-bottom)); z-index: 100;
  box-shadow: 0 -4px 12px rgba(0,0,0,.06);
}
.mobile-nav a {
  flex: 1; text-align: center; color: var(--text-muted); text-decoration: none;
  padding: 6px 4px; font-size: 11px; display: flex; flex-direction: column; align-items: center; gap: 2px;
}
.mobile-nav a i { font-size: 20px; }
.mobile-nav a.active { color: var(--primary); }
.mobile-nav .primary-fab {
  width: 52px; height: 52px; border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), #06b6d4); color: #fff;
  display: grid; place-items: center; font-size: 24px;
  margin-top: -22px; box-shadow: 0 6px 18px rgba(37,99,235,.45);
}

/* ===== Responsive ===== */
@media (max-width: 991.98px) {
  .sidebar { transform: translateX(-100%); }
  .sidebar.show { transform: translateX(0); }
  .main-content { margin-left: 0; padding-bottom: 80px; }
}

/* ===== Login page ===== */
.login-wrapper {
  min-height: 100vh; display: grid; place-items: center; padding: 20px;
  background: linear-gradient(135deg, #2563eb 0%, #06b6d4 100%);
}
.login-card {
  background: var(--surface); border-radius: 20px;
  box-shadow: 0 25px 60px rgba(0,0,0,.18);
  padding: 32px; max-width: 460px; width: 100%;
}
.login-brand { text-align: center; margin-bottom: 22px; }
.login-brand .brand-logo { width: 56px; height: 56px; margin: 0 auto 10px; font-size: 26px; }
.login-brand h1 { font-size: 22px; font-weight: 700; margin: 0; }
.login-brand p { color: var(--text-muted); font-size: 13px; margin: 4px 0 0; }
.demo-buttons { display: grid; grid-template-columns: repeat(2, 1fr); gap: 10px; }
.demo-btn {
  display: flex; align-items: center; gap: 10px;
  padding: 12px; border-radius: 12px; border: 1px solid var(--border);
  background: var(--surface); color: var(--text); text-decoration: none;
  transition: all .15s;
}
.demo-btn:hover { border-color: var(--primary); background: rgba(37,99,235,.05); transform: translateY(-1px); }
.demo-btn .demo-icon { width: 36px; height: 36px; border-radius: 10px; display: grid; place-items: center; font-size: 16px; flex-shrink: 0; }
.demo-btn .demo-meta { text-align: left; line-height: 1.2; }
.demo-btn .demo-role { font-weight: 600; font-size: 13px; }
.demo-btn .demo-user { font-size: 11px; color: var(--text-muted); }

.divider-text { display: flex; align-items: center; color: var(--text-muted); font-size: 12px; margin: 18px 0; }
.divider-text::before, .divider-text::after { content: ""; flex: 1; height: 1px; background: var(--border); }
.divider-text span { padding: 0 12px; }

/* ===== Misc ===== */
.empty-state { text-align: center; padding: 60px 20px; color: var(--text-muted); }
.empty-state i { font-size: 64px; opacity: .4; margin-bottom: 12px; display: block; }

.movement-row.in  { border-left: 3px solid var(--success); }
.movement-row.out { border-left: 3px solid var(--danger); }
.movement-row.adjust { border-left: 3px solid var(--warning); }

.text-money { font-weight: 600; }
.text-success { color: var(--success) !important; }
.text-danger  { color: var(--danger)  !important; }

.section-title { font-size: 14px; font-weight: 600; text-transform: uppercase; letter-spacing: .04em; color: var(--text-muted); margin: 22px 0 10px; }

/* alert tweaks */
.alert { border-radius: 12px; border: 0; }
.alert-success { background: rgba(16,185,129,.12); color: #065f46; }
.alert-danger  { background: rgba(239,68,68,.12);  color: #991b1b; }
.alert-warning { background: rgba(245,158,11,.18); color: #92400e; }
.alert-info    { background: rgba(6,182,212,.12);  color: #155e75; }
[data-bs-theme="dark"] .alert-success { color: #6ee7b7; }
[data-bs-theme="dark"] .alert-danger  { color: #fca5a5; }
[data-bs-theme="dark"] .alert-warning { color: #fcd34d; }
[data-bs-theme="dark"] .alert-info    { color: #67e8f9; }

/* hide horizontal scroll on small screens */
.table-responsive { border-radius: var(--radius); }