/* Modern Reset */
input,
.btn,
.card {
  border-radius: 8px !important;
  transition: all 0.3s ease;
}

/* Container */
.container {
  max-width: 900px;
  margin: 60px auto;
  padding: 0 20px;
}

/* Heading */
h2.text-center {
  font-size: 2rem;
  font-weight: 700;
  color: #2c3e50;
}

/* Tracking Form */
form.tracking-form {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
  max-width: 600px;
  margin: 0 auto 3rem;
}

form.tracking-form input.form-control {
  width: 100%;
  padding: 0.75rem 1rem;
  border: 2px solid #e0e0e0;
  font-size: 1rem;
}

form.tracking-form input.form-control:focus {
  border-color: #2c3e50;
  box-shadow: 0 0 0 2px rgba(44, 62, 80, 0.2);
  outline: none;
}

form.tracking-form button.btn-primary {
  width: 100%;
  padding: 0.75rem 2rem;
  font-weight: 600;
  letter-spacing: 0.5px;
  background-color: #2c3e50 !important;
  border-color: #2c3e50 !important;
  color: #fff !important;
}

form.tracking-form button.btn-primary:hover {
  background-color: #34495e !important;
  border-color: #34495e !important;
  transform: translateY(-2px);
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
}

form.tracking-form button.btn-primary:active {
  transform: translateY(0);
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

/* Card Styling */
.card {
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
  margin-bottom: 2rem;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.card:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 12px rgba(0, 0, 0, 0.15);
}

.card-header {
  border-radius: 8px 8px 0 0 !important;
  background-color: #2c3e50 !important;
  color: #fff !important;
  padding: 1rem 1.5rem;
  font-weight: 600;
  font-size: 1.1rem;
}

/* Card Body */
.card-body p {
  margin-bottom: 0.5rem;
  font-size: 0.95rem;
}

.card-body .d-flex {
  align-items: center;
  gap: 0.5rem;
}

.card-body .badge {
  font-size: 0.85rem;
  padding: 0.35rem 0.6rem;
}

/* Items List */
ul.list-group {
  border-radius: 8px;
  overflow: hidden;
}

ul.list-group li.list-group-item {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 0.75rem 1rem;
}

ul.list-group li.list-group-item img {
  max-width: 50px;
  border-radius: 4px;
}

/* Alerts */
.alert {
  max-width: 600px;
  margin: 1rem auto;
  text-align: center;
}

/* Responsive */
@media (max-width: 768px) {
  .container {
    padding: 0 10px;
  }

  form.tracking-form button.btn-primary {
    width: 100%;
  }

  ul.list-group li.list-group-item {
    flex-direction: column;
    align-items: flex-start;
  }
}