/* ========== General ========== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  background-color: #f4f6f9;
  min-height: 100vh;
}

/* ========== Auth Page ========== */
.auth-page {
  background: linear-gradient(135deg, #11998e 0%, #38ef7d 100%);
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
}

.auth-container {
  width: 100%;
  max-width: 400px;
}

.auth-card {
  border: none;
  border-radius: 15px;
}

/* ========== Layout ========== */
.wrapper {
  display: flex;
  min-height: 100vh;
}

.main-content {
  flex: 1;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  overflow-x: hidden;
}

/* ========== Sidebar ========== */
.sidebar {
  width: 250px;
  background: linear-gradient(180deg, #2c3e50 0%, #1a252f 100%);
  color: #fff;
  position: fixed;
  top: 0;
  left: 0;
  height: 100vh;
  overflow-y: auto;
  transition: all 0.3s ease;
  z-index: 1000;
}

.sidebar-header {
  padding: 20px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  background: rgba(0, 0, 0, 0.1);
}

.sidebar-nav {
  padding: 15px 0;
}

.sidebar-nav .nav-item {
  margin: 2px 0;
}

.sidebar-nav .nav-link {
  color: rgba(255, 255, 255, 0.7);
  padding: 12px 20px;
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  transition: all 0.2s ease;
  border-left: 3px solid transparent;
}

.sidebar-nav .nav-link:hover {
  color: #fff;
  background: rgba(255, 255, 255, 0.1);
  border-left-color: #3498db;
}

.sidebar-nav .nav-link.active {
  color: #fff;
  background: rgba(52, 152, 219, 0.2);
  border-left-color: #3498db;
}

.sidebar-nav .nav-link i {
  font-size: 1.1rem;
  width: 24px;
  text-align: center;
}

.nav-divider {
  padding: 15px 20px 8px;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: rgba(255, 255, 255, 0.4);
}

/* ========== Main Content ========== */
.main-content {
  margin-left: 250px;
  transition: all 0.3s ease;
}

/* Sidebar Hidden State (Desktop) */
.sidebar.hidden {
  transform: translateX(-100%);
}

body.sidebar-hidden .main-content {
  margin-left: 0 !important;
}

/* ========== Navbar ========== */
.navbar {
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
}

/* ========== Cards ========== */
.card {
  border: none;
  box-shadow: 0 0 15px rgba(0, 0, 0, 0.05);
  border-radius: 10px;
}

.card-header {
  border-bottom: 1px solid rgba(0, 0, 0, 0.05);
}

/* ========== Tables ========== */
.table {
  margin-bottom: 0;
}

.table th {
  font-weight: 600;
  font-size: 0.875rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.table td {
  vertical-align: middle;
}

/* ========== Buttons ========== */
.btn {
  border-radius: 8px;
  font-weight: 500;
}

.btn-group-sm .btn {
  padding: 0.35rem 0.6rem;
}

/* ========== Form Controls ========== */
.form-control,
.form-select {
  border-radius: 8px;
  border-color: #dee2e6;
}

.form-control:focus,
.form-select:focus {
  border-color: #3498db;
  box-shadow: 0 0 0 0.2rem rgba(52, 152, 219, 0.15);
}

/* ========== Badges ========== */
.badge {
  font-weight: 500;
  padding: 0.4em 0.8em;
}

/* ========== Footer ========== */
.footer {
  margin-top: auto;
}

/* ========== POS Specific ========== */
/* Category buttons - icon only, responsive grid horizontal */
.category-btns {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 0.5rem;
}

.category-btn-icon {
  width: 100%;
  aspect-ratio: 1;
  max-width: 3rem;
  max-height: 3rem;
  margin: 0 auto;
  padding: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 0.5rem;
}

.category-btn-icon i {
  font-size: 1.1rem;
}

@media (min-width: 400px) {
  .category-btns {
    grid-template-columns: repeat(6, 1fr);
  }
}

@media (min-width: 576px) {
  .category-btns {
    grid-template-columns: repeat(8, 1fr);
    gap: 0.6rem;
  }
  .category-btn-icon {
    max-width: 3.25rem;
    max-height: 3.25rem;
  }
  .category-btn-icon i {
    font-size: 1.25rem;
  }
}

@media (min-width: 768px) {
  .category-btns {
    grid-template-columns: repeat(10, 1fr);
  }
}

@media (min-width: 992px) {
  .category-btns {
    grid-template-columns: repeat(auto-fill, minmax(3rem, 1fr));
  }
}

.product-card {
  transition: all 0.2s ease;
  border: 2px solid transparent;
}

.product-card:hover {
  border-color: #3498db;
  transform: translateY(-2px);
}

.cart-item {
  transition: all 0.2s ease;
}

.cart-item:hover {
  background-color: #f8f9fa;
}

/* ========== Responsive ========== */
@media (max-width: 991.98px) {
  .sidebar {
    transform: translateX(-100%);
  }
  
  .sidebar.show {
    transform: translateX(0);
  }
  
  .main-content {
    margin-left: 0;
  }
  
  .sidebar-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: 999;
  }
  
  .sidebar-overlay.show {
    display: block;
  }
}

/* ========== Scrollbar ========== */
::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}

::-webkit-scrollbar-track {
  background: #f1f1f1;
}

::-webkit-scrollbar-thumb {
  background: #c1c1c1;
  border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
  background: #a8a8a8;
}

/* ========== Animations ========== */
@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(-10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.fade-in {
  animation: fadeIn 0.3s ease;
}

/* ========== Print Styles ========== */
@media print {
  .sidebar,
  .navbar,
  .footer,
  .no-print {
    display: none !important;
  }
  
  .main-content {
    margin-left: 0 !important;
  }
  
  .card {
    box-shadow: none !important;
    border: 1px solid #ddd !important;
  }
}