:root {
  --bg-color: #fff;
  --text-color: #333;
  --accent: #55efc4;
  --header-color: #ff7675;
}

body.dark-mode {
  --bg-color: #2f3542;
  --text-color: #f1f2f6;
  --accent: #70a1ff;
  --header-color: #e17055;
}

body {
  font-family: 'Segoe UI', sans-serif;
  background: var(--bg-color);
  color: var(--text-color);
  margin: 0;
  padding: 20px;
  transition: background 0.4s, color 0.4s;
}

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

header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: var(--header-color);
  padding: 10px 20px;
  border-radius: 12px;
  color: white;
}

table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 20px;
  box-shadow: 0 0 15px rgba(0,0,0,0.1);
}

th, td {
  border: 1px solid #ccc;
  padding: 12px;
  text-align: center;
}

th {
  background-color: var(--accent);
  color: #fff;
}

img {
  border-radius: 10px;
  width: 50px;
  height: 50px;
}

button {
  padding: 8px 14px;
  border: none;
  border-radius: 8px;
  font-weight: bold;
  background-color: var(--accent);
  color: #fff;
  cursor: pointer;
  transition: transform 0.2s;
}

button:hover {
  transform: scale(1.05);
}

button:disabled {
  background-color: #b2bec3;
  cursor: not-allowed;
}

.checkout-btn {
  background-color: #fd79a8;
  margin-top: 10px;
  font-size: 1rem;
}

footer {
  text-align: center;
  margin-top: 20px;
}

#totalDisplay {
  font-size: 1.3rem;
  margin-bottom: 10px;
}

.toast {
  background-color: #00cec9;
  color: white;
  padding: 12px 20px;
  border-radius: 10px;
  position: fixed;
  top: 20px;
  right: 20px;
  opacity: 0;
  z-index: 1000;
  transition: opacity 0.5s, transform 0.5s;
}

.show-toast {
  opacity: 1;
  transform: translateY(0);
}