@import url("https://fonts.googleapis.com/css2?family=Outfit:wght@300;400;600&family=Dancing+Script:wght@700&display=swap");

:root {
  --primary-pink: #ff4d6d;
  --secondary-pink: #ff758f;
  --deep-red: #c9184a;
  --soft-white: #fff0f3;
  --glass-bg: rgba(255, 255, 255, 0.2);
  --glass-border: rgba(255, 255, 255, 0.3);
  --shadow: 0 8px 32px 0 rgba(193, 25, 68, 0.2);
}

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

body {
  font-family: "Outfit", sans-serif;
  background: linear-gradient(135deg, #fff0f3 0%, #ffb3c1 100%);
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: clamp(1rem, 4vh, 2rem);
  padding: 1.5rem;
  overflow-y: auto;
  overflow-x: hidden;
  position: relative;
}

#background-image {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: -1;
  opacity: 0.6;
  filter: blur(4px);
}

.container {
  background: rgba(255, 255, 255, 0.4);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border: 1px solid rgba(255, 255, 255, 0.5);
  border-radius: 30px;
  padding: clamp(1.2rem, 6vw, 2.5rem);
  text-align: center;
  box-shadow: 
    0 20px 40px rgba(193, 25, 68, 0.1),
    0 1px 1px rgba(255, 255, 255, 0.5) inset;
  max-width: min(480px, 95vw);
  width: 100%;
  z-index: 1;
  animation: containerFadeIn 0.5s cubic-bezier(0.23, 1, 0.32, 1);
}

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

h1 {
  font-family: "Dancing Script", cursive;
  color: var(--deep-red);
  font-size: clamp(2rem, 8vw, 3.5rem);
  margin-bottom: 1rem;
  text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.1);
}

p {
  color: #4a4a4a;
  font-size: 1.2rem;
  margin-bottom: 1.2rem;
  line-height: 1.6;
}

.buttons {
  display: flex;
  justify-content: center;
  gap: 2rem;
  position: relative;
  min-height: 60px;
}

.btn {
  padding: 1rem 2.5rem;
  font-size: 1.1rem;
  font-weight: 600;
  border: none;
  border-radius: 50px;
  cursor: pointer;
  transition: all 0.2s cubic-bezier(0.175, 0.885, 0.32, 1.275);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
}

#yes-btn {
  background: var(--primary-pink);
  color: white;
}

#yes-btn:hover {
  background: var(--deep-red);
  transform: scale(1.1);
  box-shadow: 0 6px 20px rgba(255, 77, 109, 0.4);
}

#no-btn {
  background: white;
  color: var(--primary-pink);
  border: 2px solid var(--primary-pink);
}

#no-btn:hover {
  background: #fff0f3;
}

.success-area {
  display: none;
  overflow: visible;
  padding-bottom: 3rem;
}

#success-msg {
  font-family: "Dancing Script", cursive;
  color: var(--deep-red);
  font-size: clamp(2rem, 6vw, 3rem);
  margin-top: 0.5rem;
}

.floating-heart {
  position: absolute;
  bottom: -50px;
  color: var(--primary-pink);
  opacity: 0.6;
  animation: float 6s infinite linear;
  z-index: 0;
}

@keyframes float {
  0% {
    transform: translateY(0) rotate(0deg);
    opacity: 1;
  }
  100% {
    transform: translateY(-110vh) rotate(360deg);
    opacity: 0;
  }
}

#name-input {
  width: 100%;
  padding: 0.8rem 1.2rem;
  border-radius: 12px;
  border: 1px solid var(--glass-border);
  background: rgba(255, 255, 255, 0.5);
  margin-bottom: 1.5rem;
  font-family: inherit;
  font-size: 1rem;
  outline: none;
  transition: 0.3s;
}

#name-input:focus {
  border-color: var(--primary-pink);
  background: white;
  box-shadow: 0 0 0 4px rgba(255, 77, 109, 0.1);
}


.envelope-wrapper {
  margin: 0 auto;
  width: 220px;
  height: 150px;
  position: relative;
  cursor: pointer;
  z-index: 5;
  transition: transform 0.3s ease;
}




.envelope {
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, #ffccd5 0%, #ffb3c1 100%);
  position: relative;
  border-radius: 0 0 15px 15px;
  box-shadow: 0 15px 35px rgba(193, 25, 68, 0.15);
  transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.wax-seal {
  position: absolute;
  top: 60px;
  left: 50%;
  transform: translateX(-50%);
  width: 45px;
  height: 45px;
  background: #c9184a;
  border-radius: 50%;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 1.2rem;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.2), inset 0 0 10px rgba(255, 255, 255, 0.2);
  border: 2px solid #a4133c;
  transition: all 0.3s ease;
  cursor: pointer;
}

.envelope-wrapper.open .wax-seal {
  opacity: 0;
  transform: translateX(-50%) translateY(-20px) scale(0.5);
  pointer-events: none;
}

.flap {
  position: absolute;
  top: 0;
  width: 100%;
  height: 0;
  border-left: 120px solid transparent;
  border-right: 120px solid transparent;
  border-top: 100px solid #ff4d6d;
  transform-origin: top;
  transition: transform 0.3s ease-in-out;
  z-index: 3;
  filter: drop-shadow(0 2px 5px rgba(0, 0, 0, 0.1));
}

.pocket {
  position: absolute;
  bottom: 0;
  width: 100%;
  height: 110px;
  background: linear-gradient(to top, #ff758f 0%, #ff85a1 100%);
  border-radius: 0 0 15px 15px;
  z-index: 2;
  box-shadow: inset 0 5px 15px rgba(0, 0, 0, 0.05);
}

.letter {
  position: absolute;
  bottom: 0px;
  left: 5%;
  width: 90%;
  height: 100%;
  background: #fff;
  padding: 1.5rem;
  box-sizing: border-box;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  z-index: 1;
  overflow: hidden;
  text-align: left;
  border: 1px solid #ffccd5;
  display: flex;
  flex-direction: column;
}

.heart-watermark {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  font-size: 8rem;
  opacity: 0.03;
  pointer-events: none;
  z-index: -1;
}

.letter-content {
  opacity: 0;
  transition: opacity 0.4s ease 0.3s;
  pointer-events: none;
  overflow-y: auto;
  max-height: 100%;
  padding-right: 5px;
  position: relative;
}


.letter-content::-webkit-scrollbar {
  width: 6px;
}

.letter-content::-webkit-scrollbar-thumb {
  background: #ffccd5;
  border-radius: 10px;
}

.letter-content h2 {
  font-family: "Dancing Script", cursive;
  font-size: 2rem;
  margin-bottom: 1.2rem;
  color: var(--deep-red);
  line-height: 1.2;
}

.letter-content p {
  font-family: 'Outfit', sans-serif;
  font-size: 1.1rem;
  margin-bottom: 1rem;
  line-height: 1.5;
  color: #4a4a4a;
  letter-spacing: 0.1px;
}

.letter-content .signature {
  text-align: right;
  font-family: "Dancing Script", cursive;
  font-size: clamp(1.2rem, 4vw, 1.8rem);
  margin-top: auto;
  padding-top: 1rem;
  color: var(--deep-red);
}


.envelope-wrapper.open .flap {
  transform: perspective(1200px) rotateX(180deg);
  z-index: 0;
}

.envelope-wrapper.open .letter {
  visibility: visible;
  opacity: 1;
  transform: translate(-50%, -50%);
  position: fixed;
  top: 50%;
  left: 50%;
  width: 90vw;
  max-width: 420px;
  height: auto;
  min-height: min(350px, 80vh);
  max-height: 90vh;
  z-index: 2000;
  padding: clamp(1.5rem, 5vw, 2.5rem);
  border-radius: 2px 35px 5px 45px;
  background: linear-gradient(135deg, #fdfcf0 0%, #f1ecd9 100%);
  border: 1px solid #e2d9c0;
  background-image: 
    repeating-linear-gradient(rgba(0,0,0,0.03) 0px, rgba(0,0,0,0.03) 1px, transparent 1px, transparent 30px),
    linear-gradient(135deg, #fdfcf0 0%, #f1ecd9 100%);
  animation: paperPop 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275) forwards;
}

@keyframes paperPop {
  0% {
    top: 85%;
    transform: translate(-50%, 0) scale(0.9);
    opacity: 0;
  }
  40% {
    top: 45%;
    transform: translate(-50%, 0) scale(1.05);
    opacity: 1;
  }
  100% {
    top: 50%;
    transform: translate(-50%, -50%) scale(1);
    opacity: 1;
  }
}




@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

.envelope-wrapper::after {
  content: "Click to Open 💌";
  position: absolute;
  bottom: -40px;
  left: 50%;
  transform: translateX(-50%);
  font-size: 1rem;
  color: var(--deep-red);
  font-family: "Dancing Script", cursive;
  opacity: 0.8;
  transition: opacity 0.3s ease;
  white-space: nowrap;
}

/* Close hint removed as per request */


.envelope-wrapper.open .letter-content {
  opacity: 1;
  pointer-events: auto;
}

@media (max-width: 500px) {
  .envelope-wrapper.open .letter {
    width: 95vw;
    padding: 1.25rem;
  }
}

@media (max-height: 700px) {
  h1 { font-size: 1.8rem; margin-bottom: 0.5rem; }
  p { font-size: 1rem; margin-bottom: 0.75rem; }
  .container { padding: 1.25rem; border-radius: 20px; }
  .envelope-wrapper { transform: scale(0.85); margin: 0 auto; }
  .buttons { gap: 1rem; }
  .btn { padding: 0.8rem 1.8rem; font-size: 1rem; }
}

@media (max-width: 380px) {
  .container { padding: 1rem; }
  h1 { font-size: 1.6rem; }
  .buttons { flex-direction: column; align-items: center; gap: 0.75rem; }
  .btn { width: 100%; max-width: 200px; }
}

@media (orientation: landscape) and (max-height: 500px) {
  body { 
    flex-direction: row; 
    padding: 1rem; 
    gap: 2rem;
    overflow-y: auto; 
  }
  .envelope-wrapper { transform: scale(0.7); }
  .envelope-wrapper.open .letter {
    top: 50%;
    max-height: 95vh;
    min-height: auto;
    width: 70vw;
  }
}





.heart-particle {
  position: fixed;
  pointer-events: none;
  z-index: 10000;
  font-size: 24px;
  animation: heartExplode 1.2s cubic-bezier(0.15, 0, 0.2, 1) forwards;
}

@keyframes heartExplode {
  0% {
    transform: translate(-50%, -50%) scale(0);
    opacity: 1;
  }
  15% {
    transform: translate(-50%, -50%) scale(1.5);
  }
  100% {
    transform: translate(calc(-50% + var(--tx)), calc(-50% + var(--ty))) scale(0) rotate(var(--tr));
    opacity: 0;
  }
}


.success-area h1 {
  animation: slideDown 0.4s ease-out;
}

.success-area p {
  animation: slideDown 0.4s ease-out 0.1s both;
}

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