/* =======================
   General Styles
======================= */
body {
  font-family: Arial, sans-serif;
  background: #f4f6f9;
  margin: 0;
}

header {
  background: #0d6efd;
  color: #fff;
  padding: 15px;
  text-align: center;
}

.container {
  padding: 20px;
}

input, button, select {
  padding: 10px 12px;
  margin: 5px 0;
  font-size: 14px;
  box-sizing: border-box;
}

.page {
  background: #ffffff;
  padding: 25px;
  border-radius: 18px;
  box-shadow: 0 18px 50px rgba(15, 23, 42, 0.08);
  margin-bottom: 24px;
}

.page h3 {
  margin-top: 0;
  margin-bottom: 22px;
  color: #0d6efd;
  font-size: 1.6rem;
  letter-spacing: 0.4px;
}

.page label {
  display: block;
  margin-bottom: 10px;
  color: #334155;
  font-weight: 600;
}

.page input,
.page select {
  width: 100%;
  padding: 14px 16px;
  border: 1px solid #d1d5db;
  border-radius: 14px;
  background: #f8fafc;
  transition: border-color 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
}

.page input:focus,
.page select:focus {
  outline: none;
  border-color: #0d6efd;
  box-shadow: 0 0 0 4px rgba(13, 110, 253, 0.12);
  background: #ffffff;
}

.page button {
  background: #0d6efd;
  color: white;
  border: none;
  padding: 14px 20px;
  margin-top: 18px;
  border-radius: 14px;
  cursor: pointer;
  box-shadow: 0 10px 22px rgba(13, 110, 253, 0.18);
  transition: background 0.2s ease, transform 0.2s ease;
}

.page button:hover {
  background: #0b5ed7;
  transform: translateY(-1px);
}

.page .search-container {
  width: 100%;
  max-width: 520px;
  margin-bottom: 20px;
}

.page table {
  margin-top: 20px;
}

.table-header-row th {
  background: #0d6efd;
  color: white;
}

table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 15px;
  table-layout: fixed; /* ensures columns stay aligned */
}

th, td {
  padding: 12px;
  border: 1px solid #ddd;
  text-align: center;
  word-wrap: break-word;
}

th {
  background: #0d6efd;
  color: white;
}

.admin {
  background: #fff;
  padding: 15px;
  border-radius: 10px;
  margin-top: 20px;
}

.hidden {
  display: none;
}

.hero-img {
  width: 100%;
  max-height: 300px;
  object-fit: cover;
}

.admin-btn {
  background: #198754;
  color: white;
  border: none;
  padding: 10px 15px;
  margin-top: 15px;
  cursor: pointer;
  border-radius: 3px;
}

.search-container {
  position: relative;
  margin-bottom: 15px;
  display: inline-block;
}

.search-container input {
  padding-left: 30px;
  width: 250px;
}

.search-container i {
  position: absolute;
  top: 50%;
  left: 8px;
  transform: translateY(-50%);
  color: #0d6efd;
}

nav {
  background: #f8f9fa;
  padding: 10px;
  text-align: center;
  border-bottom: 1px solid #ddd;
}

nav a, nav button {
  margin: 0 10px;
  padding: 5px 10px;
  text-decoration: none;
  background: #0d6efd;
  color: white;
  border: none;
  cursor: pointer;
  border-radius: 3px;
}

/* Page Navigation Bar */
.page-nav {
  background: #e9ecef;
  padding: 15px;
  text-align: center;
  border-bottom: 2px solid #0d6efd;
  margin-bottom: 20px;
  border-radius: 5px;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: center;
}

.nav-btn {
  padding: 10px 20px;
  border: 2px solid #0d6efd;
  background: white;
  color: #0d6efd;
  cursor: pointer;
  border-radius: 5px;
  font-weight: bold;
  transition: all 0.3s ease;
}

.nav-btn:hover {
  background: #0d6efd;
  color: white;
}

.nav-btn.active {
  background: #0d6efd;
  color: white;
}

/* Page Content */
.page {
  animation: fadeIn 0.3s ease;
}

.form-section {
  background: white;
  padding: 15px;
  margin-bottom: 20px;
  border-radius: 5px;
  box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}

.form-section label {
  display: block;
  margin-top: 10px;
  font-weight: bold;
}

.form-section input, .form-section select {
  width: 100%;
  margin-bottom: 10px;
  box-sizing: border-box;
}

.form-section button {
  background: #198754;
  color: white;
  border: none;
  padding: 10px 15px;
  cursor: pointer;
  border-radius: 3px;
}

/* =======================
   Images in Tables
======================= */
#inventoryTable,
#salesTable {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
  margin-top: 20px;
}

#inventoryTable thead,
#salesTable thead {
  display: none;
}

#inventoryTable tbody,
#salesTable tbody {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 20px;
}

#inventoryTable tr,
#salesTable tr {
  display: grid;
  gap: 18px;
  align-items: center;
  background: #ffffff;
  padding: 22px;
  border-radius: 18px;
  box-shadow: 0 18px 45px rgba(15, 23, 42, 0.08);
  border: none;
  min-height: 160px;
}

#inventoryTable tr {
  grid-template-columns: 120px 1fr;
}

#salesTable tr {
  grid-template-columns: 1fr;
}

#inventoryTable td,
#salesTable td {
  border: none;
  padding: 0;
  text-align: left;
}

#inventoryTable img,
#salesTable img {
  width: 120px;
  height: 120px;
  object-fit: cover;
  border-radius: 18px;
  border: 2px solid #e2e8f0;
  box-shadow: 0 12px 24px rgba(15, 23, 42, 0.06);
}

.delete-btn {
  background: #dc3545;
  color: #fff;
  border: none;
  border-radius: 12px;
  padding: 8px 14px;
  cursor: pointer;
  font-weight: 700;
  transition: background 0.2s ease, transform 0.2s ease;
}

.delete-btn:hover {
  background: #b02a37;
  transform: translateY(-1px);
}

#inventoryTable td:not(:first-child),
#salesTable td {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 8px 0;
  border-bottom: 1px solid rgba(226, 232, 240, 0.8);
}

#inventoryTable td:first-child,
#salesTable td:first-child {
  display: block;
  border-bottom: none;
}

#inventoryTable td:not(:first-child)::before,
#salesTable td::before {
  content: attr(data-label);
  font-weight: 600;
  color: #64748b;
  margin-right: 12px;
  flex-shrink: 0;
}

#inventoryTable td:not(:first-child) span,
#salesTable td span {
  flex: 1;
  text-align: right;
  color: #334155;
  font-weight: 600;
}

#inventoryTable td[data-label="Name"],
#salesTable td[data-label="Item"] {
  font-size: 1.1rem;
  font-weight: 700;
  color: #0d6efd;
}

#inventoryTable td[data-label="Price"],
#inventoryTable td[data-label="Cost"],
#inventoryTable td[data-label="Stock"],
#inventoryTable td[data-label="Sold"],
#inventoryTable td[data-label="Profit"],
#salesTable td[data-label="Quantity"],
#salesTable td[data-label="Price"],
#salesTable td[data-label="Total"],
#salesTable td[data-label="Payment"] {
  color: #334155;
  font-weight: 600;
}

#inventoryTable tr:hover,
#salesTable tr:hover {
  transform: translateY(-3px);
  box-shadow: 0 24px 60px rgba(15, 23, 42, 0.12);
}

/* =======================
   Responsive Card Layout
======================= */
@media (max-width: 900px) {
  #inventoryTable tbody,
  #salesTable tbody {
    grid-template-columns: 1fr;
  }

  #inventoryTable tr,
  #salesTable tr {
    grid-template-columns: 100px 1fr;
    gap: 14px;
    padding: 18px;
  }

  #inventoryTable img,
  #salesTable img {
    width: 100px;
    height: 100px;
  }
}

@media (max-width: 600px) {
  #inventoryTable tr,
  #salesTable tr {
    grid-template-columns: 1fr;
  }

  #inventoryTable img,
  #salesTable img {
    width: 100%;
    height: 180px;
  }
}

/* =======================
   Animation
======================= */
@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}