/* ── Lounge Manager — Modern Responsive Design System ── */

@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@400;500;600;700;800&family=Outfit:wght@400;500;600;700;800&family=Poppins:wght@400;500;600;700&display=swap');

:root {
  /* Colors - Dark Mode (Default) - Enhanced Modern Palette */
  --primary: #ff6b35;
  --primary-dark: #e55a2b;
  --primary-light: #ff8555;
  --primary-glow: rgba(255, 107, 53, 0.15);
  
  --secondary: #4f46e5;
  --secondary-glow: rgba(79, 70, 229, 0.15);
  
  --bg: #0f172a;
  --bg-secondary: #1a2847;
  --panel: rgba(30, 41, 70, 0.6);
  --panel-hover: rgba(30, 41, 70, 0.8);
  --glass: rgba(255, 255, 255, 0.04);
  --border: rgba(255, 255, 255, 0.08);
  --border-light: rgba(255, 255, 255, 0.12);
  
  --text: #f8fafc;
  --text-secondary: #cbd5e1;
  --text-dim: #94a3b8;
  --text-muted: #64748b;
  
  --accent: #06b6d4;
  --success: #10b981;
  --success-glow: rgba(16, 185, 129, 0.1);
  --warning: #f59e0b;
  --danger: #ef4444;
  --danger-glow: rgba(239, 68, 68, 0.1);
  
  --sidebar-w: 250px;
  --navbar-h: 56px;
  --radius: 10px;
  --radius-lg: 14px;
  --radius-xl: 18px;
  
  --font-display: 'Outfit', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-main: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-body: 'Poppins', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
  
  --blur: blur(16px);
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  
  --spacing-xs: 4px;
  --spacing-sm: 8px;
  --spacing-md: 12px;
  --spacing-lg: 16px;
  --spacing-xl: 24px;
  --spacing-2xl: 36px;
  
  --main-padding: 1.25rem;
}

[data-theme="light"] {
  --primary: #ff5722;
  --primary-glow: rgba(255, 87, 34, 0.1);
  --secondary: #6366f1;
  --secondary-glow: rgba(99, 102, 241, 0.1);
  
  --bg: #ffffff;
  --bg-secondary: #f8fafc;
  --panel: rgba(255, 255, 255, 0.95);
  --panel-hover: rgba(255, 255, 255, 0.99);
  --glass: rgba(0, 0, 0, 0.02);
  --border: rgba(0, 0, 0, 0.08);
  --border-light: rgba(0, 0, 0, 0.06);
  
  --text: #0f172a;
  --text-secondary: #334155;
  --text-dim: #64748b;
  --text-muted: #94a3b8;
  
  --shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-xl: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
}

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

html { 
  scroll-behavior: smooth; 
  font-size: clamp(13px, 0.8vw + 10px, 15px); /* Fluid base font */
}

body { 
  font-family: var(--font-main); 
  background: var(--bg); 
  background-attachment: fixed;
  color: var(--text); 
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  line-height: 1.45;
  background-image: 
    radial-gradient(circle at 20% 50%, rgba(79, 70, 229, 0.08) 0px, transparent 50%),
    radial-gradient(circle at 80% 80%, rgba(255, 107, 53, 0.05) 0px, transparent 50%);
}

h1, h2, h3, h4, h5, h6 { 
  font-family: var(--font-display); 
  font-weight: 700; 
  letter-spacing: -0.015em;
  line-height: 1.15;
}

h1 { font-size: clamp(1.5rem, 5vw, 2rem); }
h2 { font-size: clamp(1.25rem, 4vw, 1.6rem); }
h3 { font-size: clamp(1.1rem, 3.5vw, 1.35rem); }
h4 { font-size: clamp(1rem, 3vw, 1.15rem); }

p { 
  color: var(--text-secondary); 
  font-size: 0.95rem;
  line-height: 1.5;
}

input, textarea, select { 
  font-family: var(--font-main); 
}

a { 
  color: var(--primary); 
  text-decoration: none; 
  transition: var(--transition);
}

a:hover { 
  color: var(--primary-light); 
}

/* ── Navbar ── */
.navbar { 
  background: var(--panel);
  backdrop-filter: var(--blur);
  border-bottom: 1px solid var(--border);
  padding: 0 var(--spacing-lg);
  height: var(--navbar-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: sticky;
  top: 0;
  z-index: 1000;
  gap: var(--spacing-md);
  box-shadow: var(--shadow);
}

.nav-brand {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.5rem;
  letter-spacing: -0.03em;
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  white-space: nowrap;
}

.nav-brand span { 
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.brand-logo {
  transition: transform 0.3s ease;
}

[data-theme="light"] .brand-logo {
  background: #0f172a; /* Deep navy background for light mode visibility */
  padding: 4px;
  border-radius: 8px;
  box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.mobile-toggle { 
  display: none;
  background: var(--glass);
  border: 1px solid var(--border);
  color: var(--text);
  font-size: 1.25rem;
  cursor: pointer;
  width: 44px;
  height: 44px;
  border-radius: var(--radius);
  align-items: center;
  justify-content: center;
  transition: var(--transition);
}

.mobile-toggle:hover {
  background: var(--border);
  transform: scale(1.05);
}

.mobile-toggle {
  z-index: 2100; /* Always on top of everything including sidebar */
}

/* Stacking context handled via global mobile-toggle z-index */

.user-meta {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}

.theme-toggle {
  font-size: 1.25rem;
  padding: 0.5rem !important;
}

/* ── Layout ── */
.layout { 
  display: flex; 
  min-height: calc(100vh - var(--navbar-h));
}

.sidebar { 
  width: var(--sidebar-w);
  background: var(--panel);
  backdrop-filter: var(--blur);
  border-right: 1px solid var(--border);
  padding: var(--spacing-lg) 0;
  position: sticky;
  top: var(--navbar-h);
  height: calc(100vh - var(--navbar-h));
  overflow-y: auto;
  transition: var(--transition);
  z-index: 950;
}

.sidebar::-webkit-scrollbar {
  width: 6px;
}

.sidebar::-webkit-scrollbar-track {
  background: transparent;
}

.sidebar::-webkit-scrollbar-thumb {
  background: var(--border);
  border-radius: 3px;
}

.sidebar::-webkit-scrollbar-thumb:hover {
  background: var(--text-muted);
}

.sidebar-label { 
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-muted);
  padding: var(--spacing-md) var(--spacing-lg) var(--spacing-sm);
  margin-top: var(--spacing-lg);
}

.sidebar-label:first-child {
  margin-top: 0;
}

.sidebar-link { 
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  padding: var(--spacing-md) var(--spacing-lg);
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-dim);
  transition: var(--transition);
  border-left: 3px solid transparent;
  border-bottom: 2px solid transparent;
  position: relative;
}

.sidebar-link:hover { 
  background: var(--glass);
  color: var(--text);
  border-left-color: var(--primary);
}

.sidebar-link.active { 
  background: var(--primary-glow);
  color: var(--primary);
  border-left-color: var(--primary);
  font-weight: 600;
  box-shadow: inset 0 0 10px var(--primary-glow);
}

.sidebar-link .icon {
  font-size: 1.25rem;
  flex-shrink: 0;
}

.main { 
  flex: 1;
  padding: var(--main-padding);
  width: 100%;
  overflow-y: auto;
}

/* ── Cards & Panels ── */
.card { 
  background: var(--panel);
  backdrop-filter: var(--blur);
  -webkit-backdrop-filter: var(--blur);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  margin-bottom: var(--spacing-xl);
  box-shadow: var(--shadow);
  transition: var(--transition);
}

.card:hover {
  border-color: var(--border-light);
  box-shadow: var(--shadow-lg);
  transform: translateY(-2px);
}

.card-title { 
  font-size: 1.25rem;
  font-family: var(--font-display);
  font-weight: 700;
  margin-bottom: var(--spacing-lg);
  padding-bottom: var(--spacing-md);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--spacing-md);
}

.card-subtitle {
  font-size: 0.875rem;
  color: var(--text-dim);
  margin-bottom: var(--spacing-md);
}

.card-section {
  padding: var(--spacing-lg) 0;
  border-bottom: 1px solid var(--border);
}

.card-section:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

/* ── Forms ── */
.form-group { 
  margin-bottom: var(--spacing-lg);
}

.form-label {
  display: block;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text);
  margin-bottom: var(--spacing-sm);
  text-transform: capitalize;
  letter-spacing: 0.01em;
}

input[type="text"],
input[type="email"],
input[type="password"],
input[type="number"],
input[type="date"],
input[type="time"],
textarea,
select {
  width: 100%;
  padding: var(--spacing-md) var(--spacing-md);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--glass);
  color: var(--text);
  font-size: 1rem;
  font-family: var(--font-main);
  transition: var(--transition);
  outline: none;
}

input[type="text"]:focus,
input[type="email"]:focus,
input[type="password"]:focus,
input[type="number"]:focus,
input[type="date"]:focus,
input[type="time"]:focus,
textarea:focus,
select:focus {
  background: var(--panel);
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--primary-glow);
}

input[type="text"]::placeholder,
input[type="email"]::placeholder,
input[type="password"]::placeholder,
input[type="number"]::placeholder,
textarea::placeholder {
  color: var(--text-muted);
}

textarea {
  resize: vertical;
  min-height: 120px;
  line-height: 1.6;
}

/* ── Buttons ── */
.btn { 
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-md) var(--spacing-lg);
  border-radius: var(--radius);
  font-family: var(--font-main);
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: var(--transition);
  user-select: none;
  white-space: nowrap;
  position: relative;
  overflow: hidden;
}

.btn::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.2);
  transform: translate(-50%, -50%);
  transition: width 0.6s, height 0.6s;
}

.btn:active::before {
  width: 300px;
  height: 300px;
}

.btn-primary { 
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: #fff;
  box-shadow: 0 4px 15px var(--primary-glow);
  font-weight: 700;
}

.btn-primary:hover {
  box-shadow: 0 8px 20px var(--primary-glow);
  transform: translateY(-2px);
}

.btn-secondary {
  background: linear-gradient(135deg, var(--secondary), #818cf8);
  color: #fff;
  box-shadow: 0 4px 15px var(--secondary-glow);
  font-weight: 700;
}

.btn-secondary:hover {
  box-shadow: 0 8px 20px var(--secondary-glow);
  transform: translateY(-2px);
}

.btn-ghost { 
  background: var(--glass);
  color: var(--text);
  border: 1px solid var(--border);
}

.btn-ghost:hover {
  background: var(--border);
  border-color: var(--text-dim);
}

.btn-success {
  background: linear-gradient(135deg, var(--success), #059669);
  color: #fff;
  box-shadow: 0 4px 15px var(--success-glow);
}

.btn-danger {
  background: linear-gradient(135deg, var(--danger), #dc2626);
  color: #fff;
  box-shadow: 0 4px 15px var(--danger-glow);
}

.btn-sm {
  padding: var(--spacing-sm) var(--spacing-md);
  font-size: 0.85rem;
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none !important;
}

/* ── Badges ── */
.badge { 
  display: inline-flex;
  align-items: center;
  padding: 0.35rem 0.75rem;
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  white-space: nowrap;
}

.badge-active { 
  background: var(--success-glow);
  color: var(--success);
}

.badge-warning {
  background: rgba(245, 158, 11, 0.1);
  color: var(--warning);
}

.badge-danger {
  background: var(--danger-glow);
  color: var(--danger);
}

.badge-info {
  background: rgba(6, 182, 212, 0.1);
  color: var(--accent);
}

/* ── Alerts ── */
.alert {
  padding: var(--spacing-md) var(--spacing-lg);
  border-radius: var(--radius);
  border-left: 4px solid;
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-md);
}

.alert-success {
  background: var(--success-glow);
  border-color: var(--success);
  color: var(--success);
}

.alert-danger {
  background: var(--danger-glow);
  border-color: var(--danger);
  color: var(--danger);
}

.alert-warning {
  background: rgba(245, 158, 11, 0.1);
  border-color: var(--warning);
  color: var(--warning);
}

.alert-info {
  background: var(--secondary-glow);
  border-color: var(--secondary);
  color: var(--secondary);
}

/* ── Stats Grid ── */
.stats-grid { 
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-xl);
}

.stat-card { 
  background: var(--panel);
  backdrop-filter: var(--blur);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  overflow: hidden;
  position: relative;
  transition: var(--transition);
}

.stat-card:hover {
  border-color: var(--border-light);
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
}

.stat-card::before {
  content: '';
  position: absolute;
  top: 0;
  right: 0;
  width: 100px;
  height: 100px;
  background: var(--c, var(--primary));
  opacity: 0.1;
  filter: blur(30px);
  border-radius: 50%;
}

.stat-card .val { 
  font-size: 2.5rem;
  font-weight: 800;
  font-family: var(--font-display);
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: var(--spacing-sm);
}

.stat-card .lbl { 
  font-size: 0.85rem;
  color: var(--text-dim);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-top: var(--spacing-sm);
}

.stat-card .change {
  font-size: 0.875rem;
  margin-top: var(--spacing-sm);
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
}

.stat-card .change.up { color: var(--success); }
.stat-card .change.down { color: var(--danger); }

/* ── Tables ── */
.table-container { 
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  box-shadow: var(--shadow);
}

.table-container::-webkit-scrollbar {
  height: 4px;
}

.table-container::-webkit-scrollbar-thumb {
  background: var(--border-light);
  border-radius: 2px;
}

table.data-table { 
  width: 100%;
  border-collapse: collapse;
}

.data-table th { 
  background: var(--glass);
  padding: var(--spacing-md) var(--spacing-lg);
  text-align: left;
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  border-bottom: 1px solid var(--border);
  font-family: var(--font-display);
}

.data-table td { 
  padding: var(--spacing-md) var(--spacing-lg);
  border-bottom: 1px solid var(--border);
  font-size: 0.95rem;
}

.data-table tr:last-child td { 
  border-bottom: none;
}

.data-table tr:hover td { 
  background: var(--glass);
}

.table-actions {
  display: flex;
  gap: var(--spacing-sm);
  justify-content: flex-end;
}

.btn-icon {
  width: 36px;
  height: 36px;
  padding: 0;
  border-radius: var(--radius);
  font-size: 1rem;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* ── POS Specific ── */
.pos-layout { 
  display: grid;
  grid-template-columns: 1fr 380px;
  gap: var(--spacing-xl);
  align-items: start;
}

.pos-grid { 
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
  gap: var(--spacing-md);
}

.pos-item {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--spacing-md);
  cursor: pointer;
  transition: var(--transition);
  text-align: center;
}

.pos-item:hover { 
  border-color: var(--primary);
  transform: translateY(-4px);
  box-shadow: 0 10px 25px var(--primary-glow);
}

.pos-item:active { 
  transform: translateY(-2px);
}

.order-row { 
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--spacing-md) 0;
  border-bottom: 1px solid var(--border);
  gap: var(--spacing-md);
}

.order-row:last-child { 
  border-bottom: none;
}

.qty-btn { 
  width: 36px;
  height: 36px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--glass);
  color: var(--text);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  transition: var(--transition);
  font-size: 1rem;
}

.qty-btn:hover { 
  background: var(--border);
  border-color: var(--primary);
  color: var(--primary);
}

.cat-tabs { 
  display: flex;
  gap: var(--spacing-sm);
  overflow-x: auto;
  padding-bottom: var(--spacing-sm);
  scrollbar-width: thin;
  scrollbar-color: var(--border) transparent;
  -ms-overflow-style: auto;
}

.cat-tabs::-webkit-scrollbar { 
  height: 6px;
}

.cat-tabs::-webkit-scrollbar-track { 
  background: transparent;
}

.cat-tabs::-webkit-scrollbar-thumb {
  background: var(--border);
  border-radius: 3px;
}

.cat-tab {
  padding: var(--spacing-sm) var(--spacing-lg);
  border-radius: var(--radius);
  background: var(--glass);
  border: 1px solid var(--border);
  color: var(--text-dim);
  cursor: pointer;
  white-space: nowrap;
  transition: var(--transition);
  font-weight: 500;
  font-size: 0.9rem;
}

.cat-tab:hover {
  background: var(--border);
  color: var(--text);
}

.cat-tab.active {
  background: var(--primary);
  border-color: var(--primary);
  color: #fff;
}

/* ── Utility Classes ── */
.flex { display: flex; }
.flex-col { flex-direction: column; }
.items-center { align-items: center; }
.items-start { align-items: flex-start; }
.items-end { align-items: flex-end; }
.justify-start { justify-content: flex-start; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }
.justify-end { justify-content: flex-end; }
.justify-around { justify-content: space-around; }

.gap-xs { gap: var(--spacing-xs); }
.gap-sm { gap: var(--spacing-sm); }
.gap-md { gap: var(--spacing-md); }
.gap-lg { gap: var(--spacing-lg); }
.gap-xl { gap: var(--spacing-xl); }

.mt-sm { margin-top: var(--spacing-sm); }
.mt-md { margin-top: var(--spacing-md); }
.mt-lg { margin-top: var(--spacing-lg); }
.mt-xl { margin-top: var(--spacing-xl); }

.mb-sm { margin-bottom: var(--spacing-sm); }
.mb-md { margin-bottom: var(--spacing-md); }
.mb-lg { margin-bottom: var(--spacing-lg); }
.mb-xl { margin-bottom: var(--spacing-xl); }

.px-md { padding: 0 var(--spacing-md); }
.py-md { padding: var(--spacing-md) 0; }
.p-lg { padding: var(--spacing-lg); }

.text-center { text-align: center; }
.text-right { text-align: right; }
.text-left { text-align: left; }

.text-sm { font-size: 0.875rem; }
.text-base { font-size: 1rem; }
.text-lg { font-size: 1.125rem; }
.text-xl { font-size: 1.25rem; }
.text-2xl { font-size: 1.5rem; }

.font-normal { font-weight: 400; }
.font-medium { font-weight: 500; }
.font-semibold { font-weight: 600; }
.font-bold { font-weight: 700; }

.hidden { display: none !important; }
.hidden-mobile { display: block; }
.show-mobile { display: none; }
.invisible { visibility: hidden; }
.opacity-50 { opacity: 0.5; }

.w-full { width: 100%; }
.max-w-full { max-width: 100%; }
.max-w-md { max-width: 28rem; }
.max-w-lg { max-width: 32rem; }
.max-w-2xl { max-width: 42rem; }

/* ── Responsive Design ── */
@media (max-width: 1200px) {
  :root { 
    --sidebar-w: 80px;
    --main-padding: 1.5rem;
  }
  
  .sidebar-label { 
    display: none;
  }
  
  .sidebar-link {
    justify-content: center;
    padding: var(--spacing-lg) 0;
    border-left: none;
    border-bottom: 3px solid transparent;
  }
  
  .sidebar-link span:not(.icon) { 
    display: none;
  }
  
  .sidebar-link:hover,
  .sidebar-link.active {
    border-left-color: transparent;
    border-bottom-color: var(--primary);
    border-right-color: transparent;
  }
  
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .pos-layout {
    grid-template-columns: 1fr;
  }
  
  .pos-grid {
    grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
  }
}

@media (max-width: 768px) {
  :root { 
    --sidebar-w: 280px;
    --navbar-h: 60px;
    --main-padding: 1rem;
    --spacing-xl: 24px;
  }
  
  .mobile-toggle { 
    display: flex;
    cursor: pointer;
    z-index: 2200; /* Higher than sidebar (2000) and navbar */
  }
  
  .navbar { 
    padding: 0 var(--spacing-md);
  }
  
  .nav-brand {
    font-size: 1.15rem;
    max-width: 140px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
  }
  
  .sidebar { 
    position: fixed;
    left: -100%;
    top: 0;
    z-index: 2000;
    height: 100vh;
    box-shadow: 2px 0 8px rgba(0, 0, 0, 0.3);
    padding-top: 80px;
    width: 280px !important;
    transition: left 0.3s ease;
  }
  
  .sidebar.mobile-open { 
    left: 0;
  }
  
  .sidebar-label { 
    display: block;
    padding: var(--spacing-md) var(--spacing-lg) var(--spacing-sm);
  }
  
  .sidebar-link {
    justify-content: flex-start;
    padding: var(--spacing-md) var(--spacing-lg);
    border-left: 3px solid transparent;
    border-bottom: none;
  }
  
  .sidebar-link span:not(.icon) { 
    display: block;
  }
  
  .sidebar-link:hover,
  .sidebar-link.active {
    border-left-color: var(--primary);
    border-bottom-color: transparent;
  }
  
  .stats-grid { 
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
  }
  
  .card {
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
  }
  
  .card-title {
    font-size: 1.125rem;
    margin-bottom: var(--spacing-md);
  }
  
  .pos-grid { 
    grid-template-columns: repeat(2, 1fr);
  }
  
  .pos-layout {
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
  }
  
  .hidden-mobile { 
    display: none !important;
  }
  
  .show-mobile { 
    display: block !important;
  }
  
  h1 { font-size: 1.75rem; }
  h2 { font-size: 1.5rem; }
  h3 { font-size: 1.25rem; }
  
  .btn {
    width: 100%;
    padding: var(--spacing-md);
    min-height: 44px; /* Essential touch target size */
  }
  
  .btn-sm, .btn-icon, .qty-btn {
    width: auto;
    min-height: 36px;
  }

  .pos-item {
    padding: var(--spacing-sm) !important;
  }
}

@media (max-width: 480px) {
  :root { 
    --main-padding: 0.75rem;
    --spacing-lg: 12px;
    --spacing-md: 8px;
  }
  
  .navbar {
    padding: 0 var(--spacing-sm);
    height: 52px;
  }
  
  .nav-brand {
    font-size: 1.1rem;
  }
  
  .card {
    padding: var(--spacing-md);
  }
  
  .card-title {
    font-size: 0.95rem;
  }
  
  .stats-grid {
    gap: var(--spacing-md);
  }
  
  .stat-card {
    padding: var(--spacing-md);
  }
  
  .stat-card .val {
    font-size: 1.5rem;
  }
  
  .pos-grid { 
    grid-template-columns: 1fr; /* Single column on very small screens for pos items */
    gap: var(--spacing-sm);
  }
  
  .data-table th, .data-table td {
    padding: var(--spacing-sm) var(--spacing-sm);
    font-size: 0.8rem;
  }
  
  .btn {
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: 0.85rem;
  }
  
  .form-group {
    margin-bottom: var(--spacing-md);
  }
  
  .form-label {
    font-size: 0.8rem;
  }
  
  h1 { font-size: 1.5rem; }
  h2 { font-size: 1.25rem; }
  h3 { font-size: 1rem; }
  
  p { font-size: 0.9rem; }
}