body {
  font-family: "Poppins", sans-serif;
  background: #f2f2f2;
  color: #111;
  margin: 0;
  padding: 20px;
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 100vh;
}

.container {
  background: white;
  width: 100%;
  max-width: 420px;
  border-radius: 16px;
  padding: 24px;
  box-shadow: 0 4px 15px rgba(0,0,0,0.1);
  text-align: center;
}

h1 {
  font-size: 1.5rem;
  margin-bottom: 8px;
}

.preview-box {
  position: relative;
  width: 100%;
  max-width: 360px;
  margin: 0 auto 20px;
  background: #fff;
  border-radius: 12px;
  padding: 8px;
}

canvas {
  width: 100%;
  height: auto;
  border-radius: 10px;
  background: #fff; /* ensures black tee stands out */
}

.input-section input {
  width: 100%;
  padding: 12px;
  border-radius: 10px;
  border: 1px solid #ccc;
  margin-bottom: 10px;
  font-size: 1rem;
}

button {
  width: 100%;
  padding: 14px;
  border-radius: 10px;
  border: none;
  font-weight: 600;
  font-size: 1rem;
  cursor: pointer;
  margin-top: 10px;
  transition: 0.2s;
}

button:hover { opacity: 0.9; }

#previewBtn {
  background: #111;
  color: white;
}

.share-btn {
  background: #25D366;
  color: white;
}

#orderNowBtn {
  background: #0078ff;
  color: white;
}

.coupon {
  margin-top: 12px;
  font-size: 1.1rem;
  background: #e8f5e9;
  color: #111;
  padding: 10px;
  border-radius: 8px;
}

.hidden {
  display: none;
}

@media (max-width: 480px) {
  h1 { font-size: 1.3rem; }
  button { font-size: 0.95rem; }
}