@import url('https://fonts.googleapis.com/css2?family=Poppins:wght@300;400;600;700&family=Sacramento&display=swap');

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

body {
  min-height: 100vh;
  background: linear-gradient(135deg, #ff9a9e 0%, #fecfef 99%, #fecfef 100%);
  font-family: 'Poppins', sans-serif;
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 20px;
  color: #4a4a4a;
}

.container {
  width: 100%;
  max-width: 520px;
}

.card {
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(10px);
  border-radius: 24px;
  padding: 30px 24px;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
  text-align: center;
  transition: all 0.5s ease-in-out;
}

.card.hidden {
  display: none;
  opacity: 0;
  transform: translateY(20px);
}

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

.envelope-icon {
  font-size: 70px;
  margin-bottom: 10px;
  animation: bounce 2s infinite;
}

h1 {
  font-size: 1.6rem;
  color: #d63384;
  margin-bottom: 15px;
}

h2 {
  font-size: 1.3rem;
  color: #333;
  margin-bottom: 10px;
}

.badge {
  display: inline-block;
  background: #ffe0e9;
  color: #d63384;
  font-size: 0.85rem;
  font-weight: 600;
  padding: 6px 14px;
  border-radius: 20px;
  margin-bottom: 12px;
}

.btn {
  background: linear-gradient(45deg, #ff6b81, #ff4757);
  color: white;
  border: none;
  padding: 12px 28px;
  font-size: 1rem;
  font-weight: 600;
  border-radius: 30px;
  cursor: pointer;
  box-shadow: 0 8px 18px rgba(255, 71, 87, 0.35);
  transition: transform 0.2s, box-shadow 0.2s;
  margin-top: 20px;
}

.btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 22px rgba(255, 71, 87, 0.45);
}

.polaroid {
  background: white;
  padding: 10px 10px 20px 10px;
  border-radius: 12px;
  box-shadow: 0 10px 20px rgba(0, 0, 0, 0.08);
  margin: 15px auto;
  width: 220px;
  transform: rotate(-3deg);
  transition: transform 0.3s ease;
}

.polaroid:hover {
  transform: rotate(0deg) scale(1.03);
}

.polaroid img {
  width: 100%;
  height: 200px;
  object-fit: cover;
  border-radius: 8px;
}

.polaroid p {
  font-family: 'Sacramento', cursive;
  font-size: 1.5rem;
  color: #666;
  margin-top: 8px;
}

.letter-box {
  background: #fff6f8;
  border: 1px dashed #ffb8c6;
  border-radius: 16px;
  padding: 18px;
  text-align: left;
  font-size: 0.92rem;
  line-height: 1.6;
  margin: 20px 0;
  color: #555;
}

.letter-box p {
  margin-bottom: 10px;
}

.candle-section {
  margin: 25px 0 10px 0;
  cursor: pointer;
}

.candle {
  width: 18px;
  height: 45px;
  background: repeating-linear-gradient(45deg, #ff9a9e, #ff9a9e 6px, #ffffff 6px, #ffffff 12px);
  margin: 0 auto 10px auto;
  border-radius: 4px;
  position: relative;
}

.flame {
  width: 12px;
  height: 18px;
  background: #ffa502;
  border-radius: 50% 50% 20% 20%;
  position: absolute;
  top: -18px;
  left: 3px;
  box-shadow: 0 0 12px #ffa502, 0 0 20px #ff6348;
  animation: flicker 0.6s infinite alternate;
}

.flame.off {
  display: none;
}

.footer-msg {
  font-family: 'Sacramento', cursive;
  font-size: 1.8rem;
  color: #ff4757;
  margin-top: 15px;
}

@keyframes bounce {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}

@keyframes flicker {
  0% { transform: scale(1); opacity: 0.9; }
  100% { transform: scale(1.15); opacity: 1; }
}

#polaroid-img {
  transition: opacity 0.2s ease-in-out;
}

.photo-controls {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 15px;
  margin-top: 8px;
}

.btn-nav {
  background: #ff6b81;
  color: white;
  border: none;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  cursor: pointer;
  font-size: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: 0.2s;
}

.btn-nav:hover {
  background: #ff4757;
  transform: scale(1.1);
}

.tap-hint {
  font-size: 0.75rem;
  color: #888;
}