:root {
  --ink: #0F3D2E;
  --ink-light: #1B5940;
  --cream: #F4F1EA;
  --amber: #E8A33D;
  --amber-dark: #C97F1E;
  --red: #B23A3A;
  --card-bg: #FFFFFF;
  --border: #E4E0D6;
  --text-muted: #6B7167;
  --radius: 14px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--cream);
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

.brand {
  font-size: 24px;
  font-weight: 800;
  letter-spacing: -0.5px;
  margin: 0;
}
.brand span { color: var(--amber); }

/* ---------- Login ---------- */
.login-screen {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  background: linear-gradient(160deg, var(--ink) 0%, var(--ink-light) 60%, var(--amber-dark) 140%);
}
.login-card {
  background: var(--card-bg);
  border-radius: var(--radius);
  padding: 36px 28px;
  width: 100%;
  max-width: 360px;
  box-shadow: 0 20px 50px rgba(0,0,0,0.25);
}
.tagline { color: var(--text-muted); margin: 4px 0 24px; font-size: 14px; }
.login-card label { display: block; font-size: 13px; font-weight: 600; margin: 14px 0 6px; }
.login-card input {
  width: 100%; padding: 12px 14px; border: 1px solid var(--border);
  border-radius: 10px; font-size: 15px;
}
.login-card input:focus { outline: 2px solid var(--amber); border-color: var(--amber); }
.login-card button {
  width: 100%; margin-top: 22px; padding: 13px; border: none;
  background: var(--ink); color: white; font-weight: 700; font-size: 15px;
  border-radius: 10px; cursor: pointer;
}
.login-card button:hover { background: var(--ink-light); }
.error { color: var(--red); font-size: 13px; margin-top: 10px; min-height: 16px; }

/* ---------- App shell ---------- */
.app-shell { min-height: 100vh; display: flex; }

.menu-toggle {
  position: fixed; top: 14px; left: 14px; z-index: 30;
  width: 40px; height: 40px; border-radius: 10px; border: none;
  background: var(--ink); color: white; font-size: 18px; cursor: pointer;
  display: none;
}

.sidebar {
  width: 240px; flex-shrink: 0; background: var(--ink); color: white;
  display: flex; flex-direction: column; position: sticky; top: 0; height: 100vh;
  z-index: 25;
}
.sidebar-header { padding: 22px 20px 16px; border-bottom: 1px solid rgba(255,255,255,0.1); }
.sidebar-header .brand { color: white; }
.user-name { font-size: 13px; color: rgba(255,255,255,0.65); margin: 6px 0 0; }

.sidebar-nav { flex: 1; padding: 12px 10px; overflow-y: auto; }
.nav-item {
  width: 100%; text-align: left; background: none; border: none; color: rgba(255,255,255,0.8);
  padding: 11px 12px; border-radius: 8px; font-size: 14px; font-weight: 600; cursor: pointer;
  display: flex; align-items: center; gap: 10px; margin-bottom: 2px;
}
.nav-item:hover { background: rgba(255,255,255,0.06); color: white; }
.nav-item.active { background: var(--amber); color: var(--ink); }
.nav-icon { width: 18px; text-align: center; font-size: 14px; }

.sidebar-footer {
  padding: 14px 16px 18px; border-top: 1px solid rgba(255,255,255,0.1);
  display: flex; flex-direction: column; gap: 10px; align-items: flex-start;
}
.ghost-btn {
  background: transparent; border: 1px solid rgba(255,255,255,0.4); color: white;
  padding: 8px 14px; border-radius: 8px; font-size: 13px; cursor: pointer; width: 100%;
}

.badge { font-size: 12px; padding: 5px 10px; border-radius: 20px; font-weight: 600; }
.badge-ok { background: rgba(255,255,255,0.15); color: #B7E4C7; }
.badge-pending { background: var(--amber); color: var(--ink); }
.badge-offline { background: var(--red); color: white; }

.sidebar-backdrop {
  display: none; position: fixed; inset: 0; background: rgba(0,0,0,0.4); z-index: 20;
}
.sidebar-backdrop.visible { display: block; }

#main-content { flex: 1; padding: 24px; max-width: 1100px; width: 100%; }
.view-header { margin-bottom: 18px; }
.view-header h2 { margin: 0; font-size: 22px; }
.empty-state {
  background: var(--card-bg); border: 1px dashed var(--border); border-radius: var(--radius);
  padding: 30px; color: var(--text-muted); font-size: 14px; line-height: 1.6;
}
.empty-state code { background: var(--cream); padding: 2px 6px; border-radius: 4px; }

@media (max-width: 860px) {
  .menu-toggle { display: block; }
  .sidebar {
    position: fixed; left: 0; top: 0; transform: translateX(-100%);
    transition: transform 0.2s ease; box-shadow: 0 0 30px rgba(0,0,0,0.3);
  }
  .sidebar.open { transform: translateX(0); }
  #main-content { padding: 70px 16px 24px; }
}

/* ---------- Buttons ---------- */
.primary-btn {
  background: var(--ink); color: white; border: none; padding: 10px 18px;
  border-radius: 8px; font-weight: 700; font-size: 13px; cursor: pointer;
}
.primary-btn:hover { background: var(--ink-light); }
.ghost-btn-outline {
  background: white; border: 1px solid var(--border); color: var(--ink);
  padding: 9px 16px; border-radius: 8px; font-size: 13px; font-weight: 600; cursor: pointer;
}
.ghost-btn-outline:hover { border-color: var(--ink); }

.view-header-row { display: flex; align-items: center; justify-content: space-between; }

/* ---------- Staff screen ---------- */
.staff-list { display: flex; flex-direction: column; gap: 10px; }
.staff-row {
  background: var(--card-bg); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 14px 16px; display: flex; align-items: center; justify-content: space-between; gap: 12px;
}
.staff-name { font-weight: 700; margin: 0; font-size: 14px; }
.staff-meta { color: var(--text-muted); font-size: 12.5px; margin: 4px 0 0; }
.inactive-tag {
  background: #FBE9E7; color: var(--red); font-size: 10px; font-weight: 700;
  padding: 2px 7px; border-radius: 10px; margin-left: 6px; vertical-align: middle;
}

.staff-form-overlay {
  position: fixed; inset: 0; background: rgba(15,61,46,0.35); z-index: 40;
  display: flex; align-items: center; justify-content: center; padding: 16px;
}
.staff-form {
  background: white; border-radius: var(--radius); padding: 24px; width: 100%; max-width: 440px;
  max-height: 88vh; overflow-y: auto; box-shadow: 0 20px 50px rgba(0,0,0,0.3);
}
.staff-form h3 { margin: 0 0 14px; }
.staff-form label { display: block; font-size: 13px; font-weight: 600; margin: 14px 0 6px; }
.staff-form input[type="text"], .staff-form input:not([type="checkbox"]), .staff-form select {
  width: 100%; padding: 10px 12px; border: 1px solid var(--border); border-radius: 8px; font-size: 14px;
}
.checkbox-row {
  display: flex; align-items: center; gap: 8px; font-weight: 500 !important;
  font-size: 13px !important; margin: 10px 0 !important;
}
.checkbox-row input { width: auto !important; }
.permission-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 2px 10px; }
.form-actions { display: flex; justify-content: flex-end; gap: 10px; margin-top: 18px; }
.error { color: var(--red); font-size: 13px; }

/* ---------- New Sale ---------- */
.section-label { font-size: 12.5px; font-weight: 700; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.03em; margin: 0 0 10px; }
.sale-layout { display: grid; grid-template-columns: 1fr; gap: 20px; }
@media (min-width: 900px) {
  .sale-layout { grid-template-columns: 1.4fr 1fr; align-items: start; }
}
.product-card.compact { padding: 12px 14px; }
.sale-cart {
  background: var(--card-bg); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 18px; position: sticky; top: 18px;
}
.cart-items { display: flex; flex-direction: column; gap: 8px; margin-bottom: 14px; max-height: 260px; overflow-y: auto; }
.cart-row { display: flex; justify-content: space-between; align-items: center; padding: 8px 0; border-bottom: 1px solid var(--border); }
.cart-item-name { margin: 0; font-weight: 600; font-size: 13.5px; }
.cart-item-meta { margin: 2px 0 0; font-size: 12px; color: var(--text-muted); }
.cart-row-right { display: flex; align-items: center; gap: 10px; font-weight: 700; font-size: 13.5px; }
.remove-btn { background: none; border: none; color: var(--red); cursor: pointer; font-size: 14px; }
.cart-total { display: flex; justify-content: space-between; font-weight: 800; font-size: 17px; padding: 10px 0; border-top: 2px solid var(--ink); margin-bottom: 14px; }
.full-width { width: 100%; }

/* ---------- Tables (Sales Report / Payments Received) ---------- */
.table-wrap { background: var(--card-bg); border: 1px solid var(--border); border-radius: var(--radius); overflow-x: auto; }
.data-table { width: 100%; border-collapse: collapse; font-size: 13.5px; }
.data-table th { text-align: left; padding: 12px 16px; background: var(--cream); color: var(--text-muted); font-size: 12px; text-transform: uppercase; letter-spacing: 0.03em; }
.data-table td { padding: 12px 16px; border-top: 1px solid var(--border); }
.type-tag { background: var(--cream); padding: 3px 9px; border-radius: 20px; font-size: 11.5px; font-weight: 700; text-transform: capitalize; }

/* ---------- Customers ---------- */
.balance-owing { color: var(--red); font-weight: 700; font-size: 13px; }
.balance-clear { color: var(--text-muted); font-size: 13px; }
.offline-note {
  background: #FFF3D6; border: 1px solid var(--amber); color: var(--ink);
  padding: 10px 14px; border-radius: 10px; font-size: 13px; margin-bottom: 14px;
}
.muted { color: var(--text-muted); }

/* ---------- Product grid ---------- */
.product-grid { display: grid; gap: 12px; grid-template-columns: 1fr; }
@media (min-width: 640px) {
  .product-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (min-width: 980px) {
  .product-grid { grid-template-columns: repeat(3, 1fr); }
}

.product-card {
  background: var(--card-bg); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 16px; display: flex; flex-direction: column; gap: 10px;
}
.product-card.low-stock { border-color: var(--amber); background: #FFFBF2; }
.product-name { font-weight: 700; margin: 0; font-size: 15px; }
.product-meta { color: var(--text-muted); font-size: 13px; margin: 2px 0 0; }
.product-qty { display: flex; align-items: center; gap: 10px; }
.qty-number { font-size: 26px; font-weight: 800; }
.low-badge {
  background: var(--amber); color: var(--ink); font-size: 11px; font-weight: 700;
  padding: 3px 8px; border-radius: 20px;
}
.product-actions { display: flex; gap: 8px; margin-top: 4px; }
.stock-btn {
  flex: 1; padding: 10px; border-radius: 8px; border: none; font-weight: 700;
  font-size: 13px; cursor: pointer;
}
.stock-out { background: #FBE9E7; color: var(--red); }
.stock-in { background: #E4F3EA; color: var(--ink); }