* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
  color: #fff;
  overflow-x: hidden;
  position: relative;
  min-height: 100vh;
}

/* Background - Restaurant Theme */
.background-animation {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: 
    linear-gradient(135deg, rgba(20, 15, 10, 0.95) 0%, rgba(35, 20, 15, 0.95) 50%, rgba(15, 25, 35, 0.95) 100%),
    url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" width="100" height="100"><defs><pattern id="p" patternUnits="userSpaceOnUse" width="100" height="100"><circle cx="20" cy="20" r="1" fill="rgba(255,255,255,0.05)"/><circle cx="80" cy="80" r="1.5" fill="rgba(255,255,255,0.03)"/><circle cx="50" cy="50" r="0.8" fill="rgba(255,255,255,0.04)"/></pattern></defs><rect width="100" height="100" fill="url(%23p)"/></svg>');
  background-size: auto, 200px 200px;
  animation: subtleShift 30s ease-in-out infinite;
  z-index: -2;
}

@keyframes subtleShift {
  0%, 100% {
    background-position: 0 0, 0 0;
    filter: brightness(0.95);
  }
  50% {
    background-position: 0 0, 50px 50px;
    filter: brightness(1.05);
  }
}

/* Warm glow accent */
.background-animation::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 800px;
  height: 800px;
  background: radial-gradient(circle, rgba(184, 90, 45, 0.08) 0%, transparent 70%);
  transform: translate(-50%, -50%);
  pointer-events: none;
  z-index: -1;
}

/* Stars Background */
.stars {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -1;
}

.stars::before {
  content: '';
  position: absolute;
  width: 100%;
  height: 100%;
  background-image: 
    radial-gradient(2px 2px at 20px 30px, rgba(255, 200, 150, 0.3), rgba(255, 200, 150, 0)),
    radial-gradient(2px 2px at 60px 70px, rgba(255, 200, 150, 0.2), rgba(255, 200, 150, 0)),
    radial-gradient(1px 1px at 50px 50px, rgba(255, 200, 150, 0.25), rgba(255, 200, 150, 0)),
    radial-gradient(1px 1px at 130px 80px, rgba(255, 200, 150, 0.2), rgba(255, 200, 150, 0)),
    radial-gradient(2px 2px at 90px 10px, rgba(255, 200, 150, 0.15), rgba(255, 200, 150, 0));
  background-repeat: repeat;
  background-size: 200px 200px;
  animation: twinkling 8s ease-in-out infinite;
}

@keyframes twinkling {
  0%, 100% { opacity: 0.3; }
  50% { opacity: 0.6; }
}

/* Wrapper */
.wrapper {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 100vh;
  padding: 40px 20px;
  z-index: 1;
}

/* Main Container */
.container {
  width: 100%;
  max-width: 750px;
  text-align: center;
}

/* Header Section */
.header-section {
  margin-bottom: 50px;
  animation: slideDown 0.8s ease-out;
}

@keyframes slideDown {
  from {
    opacity: 0;
    transform: translateY(-30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.product-title {
  font-size: 3.5rem;
  font-weight: 900;
  margin-bottom: 15px;
  color: #f5e6d3;
  text-shadow: 0 4px 15px rgba(0, 0, 0, 0.5);
  letter-spacing: -1px;
  animation: titlePulse 3s ease-in-out infinite;
}

@keyframes titlePulse {
  0%, 100% {
    text-shadow: 0 4px 15px rgba(0, 0, 0, 0.5), 0 0 20px rgba(184, 90, 45, 0.1);
  }
  50% {
    text-shadow: 0 4px 15px rgba(0, 0, 0, 0.5), 0 0 40px rgba(184, 90, 45, 0.2);
  }
}

.subtitle {
  font-size: 1.1rem;
  color: rgba(245, 230, 211, 0.7);
  font-weight: 400;
  letter-spacing: 0.5px;
  text-transform: uppercase;
  font-size: 0.95rem;
  opacity: 0.8;
}

/* Card Design */
.card {
  position: relative;
  background: rgba(25, 20, 18, 0.7);
  border-radius: 20px;
  padding: 40px;
  margin-bottom: 40px;
  backdrop-filter: blur(20px);
  border: 1px solid rgba(184, 90, 45, 0.2);
  box-shadow: 
    0 8px 32px rgba(0, 0, 0, 0.4),
    inset 0 1px 0 rgba(255, 255, 255, 0.1),
    0 0 40px rgba(184, 90, 45, 0.05);
  animation: cardFloat 0.8s ease-out;
  overflow: hidden;
}

@keyframes cardFloat {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Card Glow Effect */
.card-glow {
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle, rgba(184, 90, 45, 0.05) 0%, transparent 70%);
  animation: glow 12s ease-in-out infinite;
  pointer-events: none;
}

@keyframes glow {
  0%, 100% {
    transform: translate(0, 0) scale(1);
  }
  50% {
    transform: translate(30px, 30px) scale(1.1);
  }
}

.card-border {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  border-radius: 20px;
  padding: 1px;
  background: linear-gradient(135deg, rgba(184, 90, 45, 0.3), rgba(184, 90, 45, 0.1));
  pointer-events: none;
  -webkit-mask: linear-gradient(to right, transparent, black);
  mask: linear-gradient(to right, transparent, black);
}

/* Model Container */
.model-container {
  position: relative;
  width: 100%;
  height: 420px;
  margin-bottom: 30px;
  border-radius: 15px;
  overflow: hidden;
  background: linear-gradient(135deg, rgba(30, 25, 20, 0.9) 0%, rgba(35, 25, 20, 0.9) 100%);
  box-shadow: 
    0 10px 40px rgba(0, 0, 0, 0.5),
    inset 0 0 20px rgba(184, 90, 45, 0.05);
  border: 1px solid rgba(184, 90, 45, 0.15);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.model-container:hover {
  transform: translateY(-5px);
  box-shadow: 
    0 15px 50px rgba(0, 0, 0, 0.6),
    inset 0 0 30px rgba(184, 90, 45, 0.08);
}

model-viewer {
  width: 100%;
  height: 100%;
  border-radius: 15px;
}

/* Primary Action */
.primary-action {
  margin-bottom: 30px;
  animation: slideUp 0.8s ease-out 0.3s backwards;
}

@keyframes slideUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Navigation Controls Section */
.navigation-controls {
  background: linear-gradient(135deg, rgba(184, 90, 45, 0.08) 0%, rgba(184, 90, 45, 0.05) 100%);
  border: 1px solid rgba(184, 90, 45, 0.15);
  border-radius: 15px;
  padding: 25px;
  animation: slideUp 0.8s ease-out 0.4s backwards;
}

.controls-title {
  font-size: 1.1rem;
  color: #f5e6d3;
  margin: 0 0 20px 0;
  font-weight: 700;
  text-align: center;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.control-item {
  display: flex;
  gap: 16px;
  align-items: flex-start;
  padding: 16px 0;
  border-bottom: 1px solid rgba(184, 90, 45, 0.1);
  transition: all 0.3s ease;
}

.control-item:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

.control-item:hover {
  padding-left: 8px;
  color: rgba(245, 230, 211, 0.9);
}

.control-icon {
  font-size: 2rem;
  min-width: 40px;
  text-align: center;
  display: flex;
  align-items: center;
  justify-content: center;
  animation: iconBounce 2.5s ease-in-out infinite;
}

.control-text {
  flex: 1;
  color: #f5e6d3;
  font-size: 0.95rem;
  line-height: 1.5;
}

.control-text strong {
  display: block;
  font-size: 1rem;
  margin-bottom: 6px;
  color: #fff;
}

.control-text p {
  margin: 0;
  color: rgba(245, 230, 211, 0.85);
  font-size: 0.9rem;
}

/* Button Group */
.button-group {
  display: flex;
  gap: 20px;
  justify-content: center;
  flex-wrap: wrap;
  animation: buttonsAppear 0.8s ease-out 0.6s backwards;
}

@keyframes buttonsAppear {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Mobile Instructions */
.mobile-instructions {
  margin-top: 30px;
  padding: 16px 20px;
  background: linear-gradient(135deg, rgba(184, 90, 45, 0.12) 0%, rgba(184, 90, 45, 0.08) 100%);
  border: 1px solid rgba(184, 90, 45, 0.25);
  border-radius: 12px;
  backdrop-filter: blur(10px);
  animation: slideUp 0.8s ease-out 0.7s backwards;
}

@keyframes slideUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.instruction-text {
  font-size: 0.9rem;
  color: #f5e6d3;
  margin: 0;
  line-height: 1.5;
  font-weight: 500;
}

/* Liquid Glass Buttons */
.btn {
  padding: 16px 50px;
  font-size: 1rem;
  font-weight: 700;
  border: none;
  border-radius: 50px;
  cursor: pointer;
  transition: all 0.35s cubic-bezier(0.4, 0.0, 0.2, 1);
  text-transform: uppercase;
  letter-spacing: 1px;
  position: relative;
  overflow: hidden;
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  white-space: nowrap;
}

.btn-large {
  padding: 18px 40px;
  flex-direction: column;
  gap: 0;
  min-height: 100px;
  width: 100%;
  justify-content: space-between;
}

.btn-content {
  display: flex;
  flex-direction: column;
  gap: 4px;
  align-items: center;
  text-align: center;
}

.btn-title {
  display: block;
  font-size: 1.1rem;
  font-weight: 700;
}

.btn-desc {
  display: block;
  font-size: 0.85rem;
  font-weight: 500;
  opacity: 0.95;
}

.btn-icon {
  font-size: 1.8rem;
  display: inline-block;
  animation: iconFloat 2s ease-in-out infinite;
  transition: transform 0.3s ease;
}

@keyframes iconFloat {
  0%, 100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-4px);
  }
}

.btn-text {
  display: inline;
}

/* Liquid glass effect layers */
.btn::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: inherit;
  z-index: -1;
  transition: all 0.3s ease;
  border-radius: inherit;
}

.btn::after {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
  transition: left 0.5s ease;
  border-radius: inherit;
  z-index: 1;
  pointer-events: none;
}

.btn:hover::after {
  left: 100%;
}

/* Advanced liquid glass effect with GSAP-style animations */
.btn-primary {
  --button-y: 0px;
  --icon-y: 0px;
  --icon-scale: 1;
  --icon-rotate: 0deg;
  --icon-hole-scale: 0;
  --text-x: 0px;
  --text-o: 1;
  
  background: linear-gradient(135deg, 
    rgba(56, 35, 20, 0.7) 0%, 
    rgba(45, 26, 15, 0.68) 50%,
    rgba(35, 20, 12, 0.65) 100%);
  color: #ffffff;
  border: 1.5px solid rgba(100, 55, 30, 0.5);
  box-shadow: 
    0 8px 32px rgba(30, 18, 10, 0.4),
    inset 0 1px 3px rgba(255, 255, 255, 0.15),
    inset 0 -2px 8px rgba(15, 10, 5, 0.3),
    0 0 20px rgba(80, 45, 25, 0.15);
  position: relative;
  background-size: 200% 200%;
  animation: subtleGlow 6s ease-in-out infinite;
  transform: translateY(var(--button-y));
  transition: transform 0.15s ease;
}

@keyframes subtleGlow {
  0%, 100% {
    background-position: 0% 0%;
    filter: brightness(1);
  }
  50% {
    background-position: 100% 100%;
    filter: brightness(1.08);
  }
}

.btn-primary::before {
  background: linear-gradient(135deg, 
    rgba(56, 35, 20, 0.7) 0%, 
    rgba(45, 26, 15, 0.68) 50%,
    rgba(35, 20, 12, 0.65) 100%);
}

/* Liquid glass overflow effect */
.btn-primary::after {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle, rgba(255, 255, 255, 0.15) 0%, transparent 70%);
  opacity: 0;
  transition: opacity 0.3s ease;
  pointer-events: none;
  border-radius: 50%;
  z-index: 0;
}

.btn-primary:hover {
  transform: translateY(var(--button-y)) translateY(-3px);
  box-shadow: 
    0 16px 48px rgba(60, 35, 20, 0.4),
    inset 0 1px 3px rgba(255, 255, 255, 0.2),
    inset 0 -2px 12px rgba(15, 10, 5, 0.35),
    0 0 40px rgba(100, 55, 30, 0.25),
    0 0 60px rgba(80, 45, 25, 0.15);
  background: linear-gradient(135deg, 
    rgba(80, 50, 30, 0.75) 0%, 
    rgba(70, 40, 23, 0.73) 50%,
    rgba(60, 35, 20, 0.7) 100%);
  border-color: rgba(120, 70, 40, 0.6);
  backdrop-filter: blur(30px);
}

.btn-primary:hover .btn-icon {
  transform: translateY(var(--icon-y)) scale(var(--icon-scale)) rotate(var(--icon-rotate));
  filter: drop-shadow(0 0 12px rgba(100, 55, 30, 0.5));
  text-shadow: 0 0 10px rgba(80, 45, 25, 0.4);
}

.btn-primary:active {
  transform: translateY(var(--button-y));
  box-shadow: 
    0 10px 28px rgba(30, 18, 10, 0.35),
    inset 0 1px 3px rgba(255, 255, 255, 0.15),
    inset 0 -2px 8px rgba(15, 10, 5, 0.28);
  background: linear-gradient(135deg, 
    rgba(40, 24, 15, 0.65) 0%, 
    rgba(35, 20, 12, 0.63) 50%,
    rgba(30, 17, 10, 0.6) 100%);
}

/* Enhanced ripple effect on click */
.btn-primary.animated::active {
  animation: rippleEffect 0.6s ease-out;
}

@keyframes rippleEffect {
  0% {
    box-shadow: 
      0 0 0 0 rgba(100, 55, 30, 0.6),
      inset 0 1px 3px rgba(255, 255, 255, 0.15);
  }
  70% {
    box-shadow: 
      0 0 0 30px rgba(100, 55, 30, 0),
      inset 0 1px 3px rgba(255, 255, 255, 0.15);
  }
  100% {
    box-shadow: 
      0 0 0 0 rgba(100, 55, 30, 0),
      inset 0 1px 3px rgba(255, 255, 255, 0.15);
  }
}

/* Mobile icon animation container */
.btn-icon {
  position: relative;
  display: inline-block;
  transform: translateY(var(--icon-y)) scale(var(--icon-scale)) rotate(var(--icon-rotate));
  transition: transform 0.3s ease-out;
}

.btn-active {
  animation: buttonPulse 0.3s ease !important;
}

@keyframes buttonPulse {
  0% {
    transform: scale(1);
  }
  50% {
    transform: scale(0.95);
  }
  100% {
    transform: scale(1);
  }
}

/* Particles */
.particles {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
  pointer-events: none;
}

.particle {
  position: absolute;
  width: 3px;
  height: 3px;
  background: rgba(255, 200, 150, 0.4);
  border-radius: 50%;
  opacity: 0.3;
  animation: float 20s infinite linear;
}

/* Responsive Design */

/* Desktop - Hide AR button, maximize model */
@media (min-width: 769px) {
  .primary-action {
    display: none;
  }

  .model-container {
    height: 500px;
    margin-bottom: 30px;
  }

  .navigation-controls {
    margin-top: 30px;
  }
}

@media (max-width: 768px) {
  .product-title {
    font-size: 2.5rem;
  }

  .subtitle {
    font-size: 0.95rem;
  }

  .card {
    padding: 30px 20px;
  }

  .model-container {
    height: 400px;
  }

  .navigation-controls {
    padding: 20px;
  }

  .controls-title {
    font-size: 1rem;
    margin-bottom: 18px;
  }

  .control-item {
    padding: 14px 0;
    gap: 14px;
  }

  .control-icon {
    font-size: 1.8rem;
    min-width: 35px;
  }

  .control-text {
    font-size: 0.9rem;
  }

  .control-text strong {
    font-size: 0.95rem;
    margin-bottom: 4px;
  }

  .control-text p {
    font-size: 0.85rem;
  }

  .btn-large {
    min-height: 90px;
    padding: 16px 35px;
  }

  .btn-icon {
    font-size: 1.6rem;
  }

  .btn-title {
    font-size: 1rem;
  }

  .btn-desc {
    font-size: 0.8rem;
  }
}

@media (max-width: 480px) {
  .wrapper {
    padding: 20px 15px;
  }

  .product-title {
    font-size: 2rem;
    margin-bottom: 8px;
  }

  .subtitle {
    font-size: 0.85rem;
    margin-bottom: 30px;
  }

  .card {
    padding: 20px 15px;
    margin-bottom: 25px;
    border-radius: 15px;
  }

  .model-container {
    height: 280px;
    margin-bottom: 25px;
    border-radius: 12px;
  }

  .primary-action {
    margin-bottom: 25px;
  }

  .navigation-controls {
    padding: 18px;
    border-radius: 12px;
  }

  .controls-title {
    font-size: 0.95rem;
    margin-bottom: 16px;
  }

  .control-item {
    padding: 12px 0;
    gap: 12px;
  }

  .control-item:hover {
    padding-left: 0;
  }

  .control-icon {
    font-size: 1.6rem;
    min-width: 32px;
  }

  .control-text {
    font-size: 0.85rem;
  }

  .control-text strong {
    font-size: 0.9rem;
    margin-bottom: 3px;
  }

  .control-text p {
    font-size: 0.8rem;
  }

  .btn-large {
    min-height: auto;
    padding: 14px 35px;
    width: 100%;
    flex-direction: column;
    gap: 8px;
  }

  .btn-large .btn-icon {
    display: block;
    font-size: 1.4rem;
    margin: 0 auto;
  }

  .btn-large .btn-content {
    display: flex;
    flex-direction: column;
    gap: 0;
  }

  .btn-large .btn-desc {
    display: none;
  }

  .btn-icon {
    font-size: 1.4rem;
  }

  .btn-title {
    font-size: 0.95rem;
  }

  .btn-desc {
    font-size: 0.75rem;
  }
}

@media (max-width: 360px) {
  .product-title {
    font-size: 1.7rem;
  }

  .subtitle {
    font-size: 0.8rem;
  }

  .card {
    padding: 15px 12px;
  }

  .model-container {
    height: 240px;
  }

  .navigation-controls {
    padding: 15px;
  }

  .controls-title {
    font-size: 0.9rem;
  }

  .control-item {
    padding: 10px 0;
    gap: 10px;
  }

  .control-icon {
    font-size: 1.4rem;
    min-width: 28px;
  }

  .control-text {
    font-size: 0.8rem;
  }

  .control-text strong {
    font-size: 0.85rem;
  }

  .control-text p {
    font-size: 0.75rem;
  }

  .btn-large {
    min-height: 80px;
    padding: 12px 20px;
  }

  .btn-icon {
    font-size: 1.2rem;
  }

  .btn-title {
    font-size: 0.9rem;
  }

  .btn-desc {
    font-size: 0.7rem;
  }
}