* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: 'Poppins', sans-serif;
}

body {
  background: linear-gradient(135deg,#ff9a9e,#fad0c4);
  min-height: 100vh;
  color: #fff;
  text-align: center;
}

/* HERO */
.hero {
  height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
}

.hero h1 {
  font-size: 3rem;
}

.hero p {
  margin: 20px;
}

.btn-group a {
  background: #fff;
  color: #ff5e62;
  padding: 12px 20px;
  margin: 10px;
  border-radius: 30px;
  text-decoration: none;
  font-weight: bold;
  transition: 0.3s;
}

.btn-group a:hover {
  transform: scale(1.1);
}

/* ANIMASI */
.fade-in {
  animation: fade 2s forwards;
}

.delay {
  animation-delay: 1s;
}

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

/* GALLERY */
.gallery {
  padding: 20px;
  display: grid;
  grid-template-columns: repeat(auto-fit,minmax(150px,1fr));
  gap: 15px;
}

.gallery img {
  width: 100%;
  border-radius: 15px;
  transition: 0.4s;
}

.gallery img:hover {
  transform: scale(1.1);
}

/* VIDEO */
.video-section video {
  width: 90%;
  max-width: 800px;
  border-radius: 20px;
}

/* HEADER */
header {
  padding: 20px;
}

/* MUSIC BUTTON */
.music-control {
  position: fixed;
  top: 20px;
  right: 20px;
  font-size: 24px;
  cursor: pointer;
}

.balloon-container {
  position: fixed;
  bottom: -100px;
  width: 100%;
  height: 100%;
  pointer-events: none;
}

.balloon {
  position: absolute;
  width: 60px;
  height: 80px;
  background: rgba(255,255,255,0.7);
  border-radius: 50%;
  animation: fly 12s linear infinite;
}

.balloon:nth-child(1){left:10%; animation-delay:0s;}
.balloon:nth-child(2){left:30%; animation-delay:3s;}
.balloon:nth-child(3){left:50%; animation-delay:6s;}
.balloon:nth-child(4){left:70%; animation-delay:1s;}
.balloon:nth-child(5){left:90%; animation-delay:4s;}

@keyframes fly {
  from {transform: translateY(0); opacity:1;}
  to {transform: translateY(-120vh); opacity:0;}
}

#confetti {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
}

.hearts span {
  position: fixed;
  bottom: 0;
  font-size: 24px;
  animation: floatUp 8s infinite;
}

.hearts span:nth-child(1){left:20%;}
.hearts span:nth-child(2){left:40%; animation-delay:2s;}
.hearts span:nth-child(3){left:60%; animation-delay:4s;}
.hearts span:nth-child(4){left:80%; animation-delay:1s;}

@keyframes floatUp {
  from {transform: translateY(0); opacity:1;}
  to {transform: translateY(-100vh); opacity:0;}
}

/* LIGHTBOX */
#lightbox {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0,0,0,0.8);
  display: none;
  justify-content: center;
  align-items: center;
  z-index: 999;
  animation: fadeIn 0.4s;
}

#lightbox img {
  max-width: 90%;
  max-height: 90%;
  border-radius: 20px;
  animation: zoomIn 0.4s;
}

@keyframes zoomIn {
  from {transform: scale(0.6);}
  to {transform: scale(1);}
}

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

/* SURAT PAGE */
.letter-wrapper {
  min-height: 80vh;
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 20px;
}

.letter {
  background: #fff;
  color: #333;
  padding: 30px;
  max-width: 700px;
  border-radius: 20px;
  box-shadow: 0 20px 50px rgba(0,0,0,0.2);
  font-family: 'Playfair Display', serif;
  line-height: 1.8;
  position: relative;
}

.signature {
  display: block;
  margin-top: 30px;
  font-style: italic;
  text-align: right;
}

/* PASSWORD LOCK */
#lockScreen {
  height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
}

.lock-box {
  background: #fff;
  color: #333;
  padding: 30px;
  border-radius: 20px;
  width: 90%;
  max-width: 350px;
  text-align: center;
  box-shadow: 0 20px 50px rgba(0,0,0,0.2);
  animation: fadeIn 1s;
}

.lock-box input {
  width: 100%;
  padding: 12px;
  margin: 15px 0;
  border-radius: 10px;
  border: 1px solid #ddd;
  outline: none;
}

.lock-box button {
  width: 100%;
  padding: 12px;
  border: none;
  border-radius: 30px;
  background: #ff5e62;
  color: #fff;
  font-size: 16px;
  cursor: pointer;
}

.lock-box button:hover {
  opacity: 0.9;
}

#errorMsg {
  color: red;
  margin-top: 10px;
  font-size: 14px;
}

/* BACKGROUND FOTO INDEX */
.bg-photo {
  background: url('../assets/bg.jpg') center/cover no-repeat fixed;
  position: relative;
}

.bg-photo .overlay {
  position: absolute;
  inset: 0;
  background: rgba(0,0,0,0.45);
  z-index: 1;
}

.bg-photo h1,
.bg-photo p,
.bg-photo .btn-group {
  position: relative;
  z-index: 2;
}

@media (min-width: 768px) {
  .bg-photo {
    background-attachment: fixed;
  }
}

.btn-group {
  display: flex;
  flex-direction: column;   /* SUSUN KE BAWAH */
  align-items: center;
  gap: 15px;                /* JARAK ANTAR TOMBOL */
}

.btn-group a {
  width: 220px;             /* BIAR RAPI */
  text-align: center;
}

header {
  padding: 25px 20px;
  backdrop-filter: blur(10px);
  background: rgba(0,0,0,0.2);
  border-bottom: 1px solid rgba(255,255,255,0.2);
}

header h2 {
  font-size: 1.8rem;
  font-weight: 600;
}

header a {
  display: inline-block;
  margin-top: 10px;
  color: var(--light);
  text-decoration: none;
  opacity: 0.9;
}

.btn-group a {
  background: var(--light);
  color: var(--primary);
  padding: 14px 22px;
  border-radius: 40px;
  font-weight: 600;
  letter-spacing: 0.3px;
  box-shadow: 0 15px 35px rgba(0,0,0,0.15);
  transition: all 0.3s ease;
}

.btn-group a:hover {
  transform: translateY(-4px) scale(1.03);
  box-shadow: 0 25px 50px rgba(0,0,0,0.25);
}

.gallery {
  padding: 30px;
  max-width: 1200px;
  margin: auto;
}

.gallery img {
  border-radius: 18px;
  box-shadow: 0 10px 30px rgba(0,0,0,0.25);
  cursor: pointer;
}

#lightbox img {
  background: #000;
  padding: 10px;
  box-shadow: 0 30px 80px rgba(0,0,0,0.6);
}

.video-section {
  padding: 40px 20px;
  display: flex;
  justify-content: center;
}

.video-section video {
  box-shadow: 0 30px 80px rgba(0,0,0,0.5);
}

.letter {
  background: linear-gradient(#fff, #f9f9f9);
  border: 1px solid #eee;
}

.letter::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: 20px;
  box-shadow: inset 0 0 40px rgba(0,0,0,0.05);
}

.footer {
  opacity: 0.8;
  letter-spacing: 0.5px;
}

/* LOGIN PAGE */
.login-page {
  min-height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
}

.login-box {
  background: #fff;
  color: #333;
  padding: 35px;
  width: 90%;
  max-width: 360px;
  border-radius: 20px;
  text-align: center;
  box-shadow: 0 30px 70px rgba(0,0,0,0.25);
}

.login-box input {
  width: 100%;
  padding: 14px;
  margin: 15px 0;
  border-radius: 12px;
  border: 1px solid #ddd;
  outline: none;
}

.login-box button {
  width: 100%;
  padding: 14px;
  border:  palevioletred;
  border-radius: 30px;
  background: var(--primary);
  color: #000000;
  font-size: 20px;
  cursor: pointer;
}

#loginError {
  margin-top: 10px;
  font-size: 14px;
  color: red;
}

/* LOCK ICON */
.lock-icon {
  font-size: 60px;
  margin-bottom: 15px;
  transition: all 0.6s ease;
}

/* ANIMASI UNLOCK */
.unlock {
  animation: unlockAnim 1.2s forwards;
}

@keyframes unlockAnim {
  0% {
    transform: rotate(0) scale(1);
  }
  40% {
    transform: rotate(-20deg) scale(1.1);
  }
  60% {
    transform: rotate(20deg) scale(1.1);
  }
  100% {
    transform: rotate(0) scale(1.2);
  }
}

/* SUCCESS STATE */
.success {
  color: #4CAF50;
}

.page-animate {
  animation: pageIn 1.2s ease forwards;
}

@keyframes pageIn {
  from {
    opacity: 0;
    transform: translateY(40px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}