body,html 
{
  margin: 0;
  font-family: 'Poppins', sans-serif;
  background: #0f0f0f;
  color: #ffffff;
  overflow-x: hidden;
}

#loading {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: #0f0f0f;
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 1000;
}

.loader {
  border: 5px solid #1f1f1f;
  border-top: 5px solid #00ffff;
  border-radius: 50%;
  width: 60px;
  height: 60px;
  animation: spin 1s linear infinite;
}

@keyframes spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

.container {
  padding: 2rem;
  max-width: 480px;
  margin: 0 auto;
}

h2 span {
  color: #00ffff;
}

.tab {
  display: flex;
  justify-content: center;
  gap: 2rem;
  margin-bottom: 2rem;
  flex-wrap: wrap;
}

.tab button {
  background: none;
  border: none;
  color: #00ffff;
  font-size: 1rem;
  padding: 0.5rem 1rem;
  cursor: pointer;
  border-bottom: 2px solid transparent;
  transition: border 0.3s ease;
  white-space: nowrap;
}

.tab button.active {
  border-bottom: 2px solid #00ffff;
}

.content {
  display: none;
  opacity: 0;
  transform: translateY(10px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}

.content.active {
  display: block;
  opacity: 1;
  transform: translateY(0);
}

.card {
  background: #1a1a1a;
  border-radius: 12px;
  padding: 1.5rem;
  margin-bottom: 1rem;
  box-shadow: 0 0 10px #00ffff55;
}

.copy-btn {
  background: #00ffff;
  color: black;
  border: none;
  padding: 0.7rem 1.2rem;
  border-radius: 8px;
  cursor: pointer;
  margin-top: 1rem;
  transition: background 0.3s;
}

.copy-btn:hover {
  background: #00cccc;
}

.qr-code {
  width: 200px;
  cursor: pointer;
  border-radius: 12px;
  box-shadow: 0 0 8px #00ffffaa;
  user-select: none;
  display: block;
  margin: 0 auto;
  transition: transform 0.3s ease;
}

#qrModal {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: rgba(0, 0, 0, 0.85);
  justify-content: center;
  align-items: center;
  z-index: 2000;
  cursor: zoom-out;
}

#qrModal.active {
  display: flex;
}

#qrModal img {
  max-width: 90vw;
  max-height: 90vh;
  border-radius: 20px;
  box-shadow: 0 0 30px #00ffffcc;
  cursor: zoom-out;
  animation: zoomFade 0.3s ease;
}

@keyframes zoomFade {
  0% { transform: scale(0.8); opacity: 0; }
  100% { transform: scale(1); opacity: 1; }
}

.toast {
  position: fixed;
  bottom: 30px;
  left: 50%;
  transform: translateX(-50%);
  background: #00ffff;
  color: #000;
  padding: 10px 20px;
  border-radius: 8px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.4s ease;
  z-index: 1001;
}

.toast.show {
  opacity: 1;
}

#confirmPayment {
  background: #1a1a1a;
  border-radius: 12px;
  padding: 1.5rem;
  box-shadow: 0 0 10px #00ffff55;
  margin-top: 2rem;
  color: #00ffff;
}

#confirmPayment h3 {
  margin-top: 0;
  margin-bottom: 1rem;
  color: #00ffff;
  text-align: center;
}

#confirmPayment label {
  display: block;
  margin-bottom: 0.5rem;
  font-weight: 600;
}

#confirmPayment input,
#confirmPayment select {
  width: 100%;
  padding: 0.6rem;
  border-radius: 6px;
  border: none;
  margin-bottom: 1rem;
  font-size: 1rem;
  box-sizing: border-box;
  color: #000;
}

#confirmPayment input[type='file'] {
  color: #00ffff;
}

#confirmPayment .submit-btn {
  background: #00ffff;
  color: black;
  padding: 0.9rem 2rem;
  font-size: 1.1rem;
  border-radius: 10px;
  border: none;
  cursor: pointer;
  display: block;
  margin: 0 auto;
  transition: background 0.3s;
}

#confirmPayment .submit-btn:hover {
  background: #00cccc;
}

.fade-in {
  animation: fadeIn 1s ease forwards;
  opacity: 0;
}

@keyframes fadeIn {
  to {
    opacity: 1;
  }
}

.scroll-reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: all 0.6s ease-out;
}

.scroll-reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Fade In Animation */
.fade-in {
  animation: fadeIn 0.8s ease forwards;
}
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Zoom In for QR */
.zoom-in {
  animation: zoomIn 0.3s ease;
}
@keyframes zoomIn {
  from { transform: scale(0.8); opacity: 0; }
  to { transform: scale(1); opacity: 1; }
}

/* Scroll Reveal */
.scroll-reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: all 0.6s ease-out;
}
.scroll-reveal.visible {
  opacity: 1;
  transform: translateY(0);
}