:root {
  --primary: #D97706;
  --primary-dark: #B45309;
  --primary-light: #FEF3C7;
  --success: #059669;
  --success-light: #D1FAE5;
  --danger: #DC2626;
  --danger-light: #FEE2E2;
  --bg: #FFFBF5;
  --card: #FFFFFF;
  --text: #1a1a1a;
  --text-muted: #6B7280;
  --border: #E5E2D9;
  --shadow: 0 1px 3px rgba(0,0,0,0.08);
  --radius: 12px;
  --nav-height: 64px;
  --header-height: 52px;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 15px; -webkit-text-size-adjust: 100%; }
body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: var(--bg); color: var(--text); line-height: 1.5;
  overscroll-behavior: none; -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
.app { min-height: 100dvh; display: flex; flex-direction: column; }
.app-header {
  position: sticky; top: 0; z-index: 100;
  background: var(--primary); color: white;
  height: var(--header-height);
  display: flex; align-items: center; padding: 0 16px;
  box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}
.app-header h1 { font-size: 1.2rem; font-weight: 700; flex: 1; }
.header-settings-btn {
  background: none; border: none; font-size: 1.4rem; cursor: pointer;
  opacity: 0.85; padding: 4px; color: white; text-decoration: none;
}
.app-main { flex: 1; padding-bottom: calc(var(--nav-height) + 16px); }
.app-nav {
  position: fixed; bottom: 0; left: 0; right: 0; z-index: 100;
  background: var(--card); border-top: 1px solid var(--border);
  display: flex; height: var(--nav-height);
  padding-bottom: env(safe-area-inset-bottom);
  box-shadow: 0 -2px 8px rgba(0,0,0,0.06);
}
.nav-btn {
  flex: 1; display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 2px;
  border: none; background: none; color: var(--text-muted);
  font-size: 0.7rem; cursor: pointer; transition: color 0.15s;
  text-decoration: none;
}
.nav-btn.active { color: var(--primary); }
.nav-icon { font-size: 1.3rem; }
.nav-label { font-weight: 500; }
.page { padding: 12px 16px; max-width: 600px; margin: 0 auto; }
.page h2 { font-size: 1.3rem; margin-bottom: 12px; }
.page-header {
  display: flex; justify-content: space-between; align-items: center; margin-bottom: 12px;
}
.page-header h2, .page-header h3 { margin-bottom: 0; }
.card {
  background: var(--card); border-radius: var(--radius);
  padding: 14px 16px; margin-bottom: 12px;
  box-shadow: var(--shadow); border: 1px solid var(--border);
}
.card h3 { font-size: 1rem; margin-bottom: 10px; color: var(--text); }
.card h4 { font-size: 0.9rem; margin-bottom: 8px; color: var(--text-muted); }
.card-clickable { cursor: pointer; transition: transform 0.1s, box-shadow 0.15s; }
.card-clickable:active { transform: scale(0.98); }
.card-row {
  display: flex; justify-content: space-between; align-items: center;
  padding: 6px 0; gap: 8px; flex-wrap: wrap;
}
.card-row + .card-row { border-top: 1px solid #f3f0ea; }
.card-row.bold { font-weight: 600; }
.row-actions { display: flex; align-items: center; gap: 8px; }
.divider { height: 1px; background: var(--border); margin: 10px 0; }
.stats-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-bottom: 12px; }
.stat-card {
  background: var(--card); border-radius: var(--radius);
  padding: 14px; text-align: center;
  box-shadow: var(--shadow); border: 1px solid var(--border);
}
.stat-card.accent { background: var(--primary-light); border-color: var(--primary); }
.stat-value { font-size: 1.3rem; font-weight: 700; color: var(--text); }
.stat-label { font-size: 0.75rem; color: var(--text-muted); margin-top: 2px; }
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 6px;
  padding: 10px 18px; border-radius: 10px; border: none;
  font-size: 0.9rem; font-weight: 600; cursor: pointer;
  transition: background 0.15s, transform 0.1s;
  text-decoration: none;
}
.btn:active { transform: scale(0.97); }
.btn-primary { background: var(--primary); color: white; }
.btn-primary:hover { background: var(--primary-dark); }
.btn-outline { background: transparent; color: var(--primary); border: 1.5px solid var(--primary); }
.btn-ghost { background: transparent; color: var(--text-muted); padding: 8px 12px; }
.btn-danger { background: var(--danger); color: white; }
.btn-small { padding: 6px 12px; font-size: 0.8rem; border-radius: 8px; }
.btn-block { width: 100%; }
.btn-icon {
  background: none; border: none; cursor: pointer;
  font-size: 1.1rem; padding: 4px; opacity: 0.6; transition: opacity 0.15s;
}
.btn-icon:hover { opacity: 1; }
.btn-group { display: flex; gap: 6px; flex-wrap: wrap; }
.form-group { margin-bottom: 14px; }
.form-group label {
  display: block; font-size: 0.8rem; font-weight: 600;
  color: var(--text-muted); margin-bottom: 4px;
}
.form-group input, .form-group select {
  width: 100%; padding: 10px 12px;
  border: 1.5px solid var(--border); border-radius: 10px;
  font-size: 0.95rem; background: var(--bg); color: var(--text);
  outline: none; transition: border-color 0.15s;
}
.form-group input:focus, .form-group select:focus { border-color: var(--primary); }
.form-group input[type="file"] { padding: 8px; font-size: 0.85rem; }
.inline-form { display: flex; gap: 8px; align-items: flex-end; }
.inline-form input {
  flex: 1; padding: 10px 12px;
  border: 1.5px solid var(--border); border-radius: 10px;
  font-size: 0.95rem; background: var(--bg); outline: none;
}
.inline-form input:focus { border-color: var(--primary); }
.checkbox-label {
  display: flex !important; align-items: center; gap: 8px;
  font-size: 0.9rem !important; cursor: pointer;
}
.checkbox-label input[type="checkbox"] { width: 18px; height: 18px; accent-color: var(--primary); }
.badge {
  display: inline-block; padding: 2px 8px; border-radius: 20px;
  font-size: 0.7rem; font-weight: 600; margin-left: 6px; vertical-align: middle;
}
.badge-success { background: var(--success-light); color: var(--success); }
.badge-warn { background: #FEF3C7; color: #92400E; }
.badge-info { background: #DBEAFE; color: #1E40AF; }
.badge-muted { background: #F3F4F6; color: var(--text-muted); }
.badge-open { background: #FEE2E2; color: #991B1B; }
.card-open { border-color: #DC2626; background: #FFF8F8; }
.hint {
  background: #F0FDF4; border: 1px solid #BBF7D0; border-radius: 8px;
  padding: 8px 12px; font-size: 0.8rem; color: #166534; margin-top: 8px;
}
.chart-card { overflow: hidden; }
.text-success { color: var(--success); }
.text-danger { color: var(--danger); }
.text-muted { color: var(--text-muted); }
.text-small { font-size: 0.8rem; }
.text-right { text-align: right; }
.empty-state { text-align: center; padding: 32px 16px; color: var(--text-muted); }
.empty-state p { margin-bottom: 16px; }
.quick-action { margin-bottom: 12px; }
.customer-list { display: flex; flex-direction: column; gap: 8px; }
.nav-btn-sell { flex: 1.2; color: var(--primary) !important; }
.nav-sell-circle {
  display: flex; align-items: center; justify-content: center;
  width: 42px; height: 42px; background: var(--primary); border-radius: 50%;
  font-size: 1.3rem; margin-bottom: 1px;
  box-shadow: 0 2px 8px rgba(217, 119, 6, 0.4);
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #1a1816; --card: #262320; --text: #F5F0E8;
    --text-muted: #9CA3AF; --border: #3D3830;
    --shadow: 0 1px 3px rgba(0,0,0,0.3);
    --primary-light: #422006; --success-light: #064E3B; --danger-light: #7F1D1D;
  }
  .hint { background: #064E3B; border-color: #059669; color: #A7F3D0; }
}