/* Reset & Base */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  line-height: 1.6;
  color: #333;
  background-color: #f8f9fa;
}

a {
  color: inherit;
  text-decoration: none;
}

/* Navbar */
.navbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: #2c3e50;
  padding: 1rem 2rem;
  color: #fff;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.navbar .logo {
  font-size: 1.5rem;
  font-weight: bold;
}

.navbar .nav-links {
  list-style: none;
  display: flex;
  gap: 2rem;
}

.navbar a {
  padding: 0.5rem 1rem;
  border-radius: 4px;
  transition: background-color 0.3s;
}

.navbar a:hover {
  background-color: #34495e;
}

/* Main Content */
body {
  padding-top: 80px;
}

section {
  padding: 2rem;
  margin: 1rem 0;
}

/* Dashboard */
.dashboard {
  background: white;
  border-radius: 12px;
  box-shadow: 0 4px 6px rgba(0,0,0,0.1);
  margin: 1rem;
}

.dashboard h2 {
  text-align: center;
  margin-bottom: 2rem;
  color: #2c3e50;
  font-size: 2rem;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1.5rem;
}

.stat-card {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: white;
  padding: 2rem;
  border-radius: 12px;
  text-align: center;
  box-shadow: 0 4px 15px rgba(0,0,0,0.1);
  transition: transform 0.3s;
}

.stat-card:hover {
  transform: translateY(-5px);
}

.stat-card h3 {
  font-size: 2.5rem;
  font-weight: bold;
  margin-bottom: 0.5rem;
}

.stat-card p {
  font-size: 1rem;
  opacity: 0.9;
}

/* Inventory Section */
.inventory-section {
  background: white;
  border-radius: 12px;
  box-shadow: 0 4px 6px rgba(0,0,0,0.1);
  margin: 1rem;
}

.section-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 2rem;
  flex-wrap: wrap;
  gap: 1rem;
}

.section-header h2 {
  color: #2c3e50;
  font-size: 1.8rem;
}

.search-controls {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

.search-controls input,
.search-controls select {
  padding: 0.75rem;
  border: 2px solid #e9ecef;
  border-radius: 8px;
  font-size: 1rem;
  transition: border-color 0.3s;
}

.search-controls input:focus,
.search-controls select:focus {
  outline: none;
  border-color: #667eea;
}

.inventory-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1.5rem;
}

.inventory-item {
  background: #f8f9fa;
  border: 1px solid #e9ecef;
  border-radius: 12px;
  padding: 1.5rem;
  transition: all 0.3s;
  position: relative;
}

.inventory-item:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(0,0,0,0.1);
}

.inventory-item-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 1rem;
}

.inventory-item-title {
  font-size: 1.2rem;
  font-weight: bold;
  color: #2c3e50;
}

.inventory-item-actions {
  display: flex;
  gap: 0.5rem;
}

.btn-small {
  padding: 0.3rem 0.6rem;
  font-size: 0.8rem;
  border: none;
  border-radius: 4px;
  cursor: pointer;
  transition: all 0.3s;
}

.btn-edit {
  background: #3498db;
  color: white;
}

.btn-edit:hover {
  background: #2980b9;
}

.btn-delete {
  background: #e74c3c;
  color: white;
}

.btn-delete:hover {
  background: #c0392b;
}

.inventory-item-details {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.5rem;
  font-size: 0.9rem;
}

.detail-row {
  display: flex;
  justify-content: space-between;
}

.detail-label {
  font-weight: 600;
  color: #666;
}

.detail-value {
  color: #333;
}

.quantity-high {
  color: #27ae60;
  font-weight: bold;
}

.quantity-low {
  color: #e74c3c;
  font-weight: bold;
}

.quantity-medium {
  color: #f39c12;
  font-weight: bold;
}

/* Add Ammo Section */
.add-ammo-section {
  background: white;
  border-radius: 12px;
  box-shadow: 0 4px 6px rgba(0,0,0,0.1);
  margin: 1rem;
}

.add-ammo-section h2 {
  color: #2c3e50;
  margin-bottom: 2rem;
  text-align: center;
  font-size: 1.8rem;
}

.ammo-form {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1.5rem;
  max-width: 800px;
  margin: 0 auto;
}

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

.form-group label {
  margin-bottom: 0.5rem;
  font-weight: 600;
  color: #2c3e50;
}

.form-group input,
.form-group textarea,
.form-group select {
  padding: 0.75rem;
  border: 2px solid #e9ecef;
  border-radius: 8px;
  font-size: 1rem;
  transition: border-color 0.3s;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  outline: none;
  border-color: #667eea;
}

.form-group textarea {
  resize: vertical;
  min-height: 100px;
}

.form-buttons {
  grid-column: 1 / -1;
  display: flex;
  gap: 1rem;
  justify-content: center;
  margin-top: 1rem;
}

.form-buttons button {
  padding: 1rem 2rem;
  border: none;
  border-radius: 8px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s;
  min-width: 120px;
}

.form-buttons button[type="submit"] {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: white;
}

.form-buttons button[type="submit"]:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 15px rgba(102, 126, 234, 0.3);
}

.form-buttons .secondary {
  background: #6c757d;
  color: white;
}

.form-buttons .secondary:hover {
  background: #545b62;
}

/* Modal */
.modal {
  display: none;
  position: fixed;
  z-index: 2000;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0,0,0,0.5);
  backdrop-filter: blur(4px);
}

.modal-content {
  background-color: white;
  margin: 5% auto;
  padding: 2rem;
  border-radius: 12px;
  width: 90%;
  max-width: 600px;
  max-height: 80%;
  overflow-y: auto;
  position: relative;
  animation: modalSlideIn 0.3s ease-out;
}

@keyframes modalSlideIn {
  from {
    transform: translateY(-50px);
    opacity: 0;
  }
  to {
    transform: translateY(0);
    opacity: 1;
  }
}

.close {
  position: absolute;
  top: 1rem;
  right: 1.5rem;
  color: #aaa;
  font-size: 2rem;
  font-weight: bold;
  cursor: pointer;
  transition: color 0.3s;
}

.close:hover {
  color: #000;
}

/* Footer */
.footer {
  background: #2c3e50;
  color: white;
  text-align: center;
  padding: 2rem 0;
  margin-top: 3rem;
}

/* Responsive Design */
@media (max-width: 768px) {
  body {
    margin-top: 60px;
  }

  .navbar {
    padding: 0.75rem 1rem;
  }

  .navbar .nav-links {
    gap: 1rem;
  }

  section {
    padding: 1rem;
    margin: 0.5rem 0;
  }

  .stats-grid {
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 1rem;
  }

  .stat-card {
    padding: 1.5rem;
  }

  .stat-card h3 {
    font-size: 2rem;
  }

  .section-header {
    flex-direction: column;
    align-items: stretch;
  }

  .search-controls {
    justify-content: stretch;
  }

  .search-controls input,
  .search-controls select {
    flex: 1;
  }

  .inventory-grid {
    grid-template-columns: 1fr;
  }

  .ammo-form {
    grid-template-columns: 1fr;
    gap: 1rem;
  }

  .form-buttons {
    flex-direction: column;
  }

  .modal-content {
    margin: 10% auto;
    width: 95%;
    padding: 1.5rem;
  }
}

@media (max-width: 480px) {
  .navbar .nav-links {
    font-size: 0.9rem;
    gap: 0.5rem;
  }

  .dashboard h2 {
    font-size: 1.5rem;
  }

  .section-header h2 {
    font-size: 1.4rem;
  }

  .stats-grid {
    grid-template-columns: 1fr 1fr;
  }
}

/* Utility Classes */
.hidden {
  display: none !important;
}

.loading {
  opacity: 0.6;
  pointer-events: none;
}

.empty-state {
  text-align: center;
  padding: 3rem;
  color: #6c757d;
}

.empty-state h3 {
  margin-bottom: 1rem;
  font-size: 1.5rem;
}

.empty-state p {
  font-size: 1.1rem;
  margin-bottom: 2rem;
}

.btn-primary {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  color: white;
  padding: 1rem 2rem;
  border: none;
  border-radius: 8px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s;
  text-decoration: none;
  display: inline-block;
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 15px rgba(102, 126, 234, 0.3);
}