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

body {
  font-family: Segoe UI, Tahoma, Geneva, Verdana, sans-serif;
  background: #f5f5f5;
  color: #333;
}

.container {
  max-width: 1000px;
  margin: 0 auto;
  padding: 20px;
}

/* ===== HEADER ===== */
header {
  background: white;
  border-bottom: 1px solid #e0e0e0;
  margin-bottom: 20px;
  padding: 10px 0;
  position: sticky;
  top: 0;
}

h1 {
  font-size: 24px;
  margin-bottom: 15px;
  padding-left: 0;
}

.tabs {
  display: flex;
  gap: 0;
  border-bottom: 2px solid #e0e0e0;
}

.tab {
  border: none;
  background: none;
  padding: 10px 20px;
  font-size: 15px;
  cursor: pointer;
  border-bottom: 3px solid transparent;
  transition: all 0.3s;
}

.tab:hover {
  background: #f9f9f9;
}

.tab.active {
  border-bottom-color: #0066cc;
  color: #0066cc;
  font-weight: 600;
}

/* ===== SECTIONS & LAYOUT ===== */
.section {
  background: white;
  padding: 25px;
  border-radius: 8px;
  margin-bottom: 20px;
  display: none;
}

.section.active,
.section[style*="display: block"] {
  display: block;
}

h2 {
  font-size: 20px;
  margin-bottom: 20px;
  color: #222;
}

h3 {
  font-size: 16px;
  margin: 25px 0 15px 0;
  color: #222;
}

/* ===== FORMS ===== */
.form-group {
  display: flex;
  flex-direction: column;
  gap: 15px;
  margin-bottom: 15px;
}

.form-group > div {
  display: flex;
  flex-direction: column;
}

label {
  font-weight: 600;
  font-size: 14px;
  margin-bottom: 5px;
  color: #333;
}

input[type="text"],
input[type="email"],
input[type="number"],
select {
  padding: 10px;
  border: 1px solid #ddd;
  border-radius: 4px;
  font-size: 14px;
  font-family: inherit;
}

input[type="text"]:focus,
input[type="email"]:focus,
input[type="number"]:focus,
select:focus {
  outline: none;
  border-color: #0066cc;
  box-shadow: 0 0 0 3px rgba(0, 102, 204, 0.1);
}

/* ===== AUTOCOMPLETE ===== */
.autocomplete-list {
  list-style: none;
  background: white;
  border: 1px solid #ddd;
  border-top: none;
  border-radius: 0 0 4px 4px;
  max-height: 150px;
  overflow-y: auto;
  display: none;
}

.autocomplete-list div {
  padding: 10px;
  cursor: pointer;
  border-bottom: 1px solid #eee;
}

.autocomplete-list div:hover {
  background: #f0f0f0;
}

/* ===== BUTTONS ===== */
button {
  font-family: inherit;
  cursor: pointer;
  transition: all 0.3s;
}

.btn-primary,
.btn-secondary,
.btn-danger {
  padding: 10px 20px;
  border: none;
  border-radius: 4px;
  font-size: 14px;
  font-weight: 600;
}

.btn-primary {
  background: #0066cc;
  color: white;
}

.btn-primary:hover {
  background: #0052a3;
}

.btn-secondary {
  background: #f0f0f0;
  color: #333;
  border: 1px solid #ddd;
}

.btn-secondary:hover {
  background: #e0e0e0;
}

.btn-danger {
  background: #dc3545;
  color: white;
}

.btn-danger:hover {
  background: #c82333;
}

/* ===== TABLE ===== */
.table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 15px;
}

.table th {
  background: #f0f0f0;
  padding: 12px;
  text-align: left;
  font-weight: 600;
  border-bottom: 2px solid #ddd;
}

.table td {
  padding: 12px;
  border-bottom: 1px solid #eee;
}

.table tr:hover {
  background: #f9f9f9;
}

button.btn-primary[onclick*="delete"],
button[onclick*="delete"] {
  background: #dc3545;
  color: white;
  padding: 5px 10px;
  font-size: 12px;
}

button.btn-primary[onclick*="delete"]:hover,
button[onclick*="delete"]:hover {
  background: #c82333;
}

/* ===== PRODUCTS GRID ===== */
#product-list {
  margin-top: 20px;
}

#product-list h4 {
  margin-bottom: 15px;
  font-size: 16px;
}

#product-list > div {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 15px;
}

#product-list > div > div {
  border: 1px solid #ddd;
  padding: 15px;
  border-radius: 6px;
  background: #f9f9f9;
}

#product-list > div > div:hover {
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
  transition: all 0.3s;
}

#product-list strong {
  display: block;
  margin: 8px 0;
  font-size: 15px;
}

#product-list p {
  margin: 5px 0;
  font-size: 13px;
}

/* ===== RESULTS ===== */
#postal-result {
  background: #f0f8ff;
  padding: 15px;
  border-radius: 6px;
  margin-top: 15px;
  border-left: 4px solid #0066cc;
}

#postal-result p {
  margin: 5px 0;
  font-size: 14px;
}

#postal-table {
  margin-top: 15px;
}

#postal-table table {
  width: 100%;
  border-collapse: collapse;
  background: white;
}

#postal-table th {
  background: #f0f0f0;
  padding: 10px;
  border-bottom: 2px solid #ddd;
  font-weight: 600;
  text-align: left;
}

#postal-table td {
  padding: 10px;
  border-bottom: 1px solid #eee;
}

/* ===== RESPONSIVE ===== */
@media (max-width: 768px) {
  .container {
    padding: 10px;
  }

  .section {
    padding: 15px;
  }

  .tabs {
    overflow-x: auto;
  }

  .tab {
    padding: 10px 15px;
    font-size: 13px;
  }

  h1 {
    font-size: 18px;
  }

  h2 {
    font-size: 16px;
  }

  input[type="text"],
  select {
    font-size: 16px;
  }

  #product-list > div {
    grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    gap: 10px;
  }

  .table {
    font-size: 13px;
  }

  .table td,
  .table th {
    padding: 8px;
  }
}