:root {
    --kitty-pink: #ffb7c5;
    --kuromi-purple: #2c003e;
    --kuromi-accent: #b162cf;
    --white: #ffffff;
    --envelope-color: #f0f0f0;
    --kitty-border: #ff4d6d;
}

body {
    margin: 0;
    padding: 0;
    font-family: 'Arial', sans-serif;
    background-color: var(--kitty-pink); /* Fundo base (a parte de cima) */
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    overflow: hidden;
    position: relative; /* Necessário para posicionar a onda */
}

/* --- ONDA INFERIOR ROXA --- */
.bottom-wave {
    position: absolute;
    bottom: 60;
    left: 0;
    width: 100%;
    height: 105%; /* Ajuste a altura para subir ou descer a onda */
    background-color: var(--kuromi-purple);
    z-index: 1; /* Fica atrás do envelope */
    /* Cria a forma de onda com clip-path */
    clip-path: ellipse(90% 50% at 50% 90%); /* Ajuste esses valores para mudar a "barriga" da onda */
}


/* --- ENVELOPE --- */
.envelope-wrapper {
    position: relative;
    cursor: pointer;
    animation: flutuarSuave 3s ease-in-out infinite;
    z-index: 10; /* Garante que o envelope fique sobre a onda */
}

.envelope {
    position: relative;
    width: 280px;
    height: 180px;
    background: var(--envelope-color);
    border-radius: 0 0 10px 10px;
    box-shadow: 0 15px 35px rgba(0,0,0,0.3);
    overflow: hidden; 
}

.envelope::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    border-left: 140px solid transparent;
    border-right: 140px solid transparent;
    border-top: 110px solid #e0e0e0;
    transform-origin: top;
    transition: transform 0.6s ease;
    z-index: 5;
}

.envelope::after {
    content: "";
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 0;
    border-left: 140px solid var(--envelope-color);
    border-right: 140px solid var(--envelope-color);
    border-top: 100px solid transparent;
    border-bottom: 90px solid #e8e8e8;
    z-index: 4;
}

/* CARTA */
.letter-preview {
    position: absolute;
    bottom: 0;
    left: 10px;
    right: 10px;
    height: 160px;
    background: var(--white);
    border: 3px solid var(--kitty-pink);
    border-radius: 10px;
    text-align: center;
    padding: 10px;
    color: var(--kitty-border);
    font-family: 'Comic Sans MS', sans-serif;
    z-index: 2;
    transition: transform 0.8s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    display: flex;
    flex-direction: column;
    justify-content: center;
    box-sizing: border-box;
}

.titulo-carta { margin: 0; font-size: 16px; font-weight: bold; }
.mensagem-texto { font-size: 13px; line-height: 1.2; color: #444; margin: 5px 0; }

/* ESTADO ABERTO */
.envelope.open { overflow: visible; }
.envelope.open::before { transform: rotateX(180deg); z-index: 1; }
.envelope.open .letter-preview { transform: translateY(-130px); z-index: 6; }

/* SELO */
.heart-sticker {
    position: absolute;
    top: 85px;
    left: 50%;
    transform: translateX(-50%);
    font-size: 30px;
    z-index: 6;
    transition: opacity 0.3s;
}
.heart-sticker::after { content: "❤️"; }
.envelope.open .heart-sticker { opacity: 0; }

/* --- SEÇÃO DE ADESIVOS (STICKERS) --- */
.sticker {
    position: absolute;
    background-size: contain;
    background-repeat: no-repeat;
    background-position: center;
    z-index: 10;
    filter: drop-shadow(2px 2px 0 white) drop-shadow(-2px -2px 0 white) drop-shadow(0 4px 6px rgba(0,0,0,0.2));
    transition: transform 0.3s ease;
}

.sticker:hover { transform: scale(1.1) rotate(0deg); }

.sticker-foto {
    width: 90px;
    height: 90px;
    left: -15px;
    bottom: 20px;
    transform: rotate(-12deg);
    background-image: url('image/malandra.png');
}

.sticker-extra-1 {
    width: 40px;
    height: 40px;
    top: 40px;
    right: 10px;
    transform: rotate(15deg);
    background-image: url('image/fofa2.png');
}

.sticker-extra-2 {
    width: 35px;
    height: 35px;
    bottom: 15px;
    right: 20px;
    transform: rotate(-10deg);
    background-image: url('image/fofa.png');
}

.sticker-extra-3 {
  width: 45px;
  height: 50px;
  bottom: 35px;
  left: 70px;
  transform: rotate(-15deg);
  background-image: url('image/cavera.png');
}

/* ANIMAÇÕES */
@keyframes flutuarSuave {
    0%, 100% { transform: translateY(0px); filter: drop-shadow(0 15px 10px rgba(0,0,0,0.2)); }
    50% { transform: translateY(-25px); filter: drop-shadow(0 40px 20px rgba(0,0,0,0.1)); }
}

.bow { font-size: 20px; }
.linhas-decorativas {
    margin: 5px auto;
    width: 80%;
    height: 20px;
    background: repeating-linear-gradient(to bottom, transparent, transparent 5px, var(--kitty-pink) 6px);
    opacity: 0.2;
}

.stars-container {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 2; /* Fica atrás do envelope, mas na frente do fundo */
}

.star {
    position: absolute;
    /* Adiciona a bordinha branca para parecer adesivo */
    filter: drop-shadow(2px 2px 0 white) drop-shadow(-2px -2px 0 white);
    /* Faz elas ficarem pulsando suavemente no fundo */
    animation: piscar 3s ease-in-out infinite;
    opacity: 0.6;
}

@keyframes piscar {
    0%, 100% { 
        opacity: 0.4; 
        transform: scale(0.9) rotate(0deg); 
    }
    50% { 
        opacity: 0.8; 
        transform: scale(1.1) rotate(10deg); 
    }
}