body {
    margin: 0;
    padding: 0;
    overflow: hidden;
    background: url('https://i.ibb.co/Zm7sHDT/sunset-sky-romantic.jpg') no-repeat center center fixed;
    background-size: cover;
    font-family: 'Comic Sans MS', cursive, sans-serif;
}

/* ======== KARTU ======== */
.card {
    position: relative;
    z-index: 10;
    background: rgba(255, 255, 255, 0.9);
    width: 85%;
    max-width: 450px;
    margin: 10vh auto;
    padding: 30px;
    border-radius: 25px;
    box-shadow: 0 10px 35px rgba(255, 105, 180, 0.5);
    text-align: center;
    animation: fadeIn 2s ease;
}

h1 {
    color: #ff4081;
    font-size: 32px;
    text-shadow: 0 0 10px rgba(255, 192, 203, 0.7);
}

.intro {
    color: #555;
    margin-bottom: 10px;
    font-size: 16px;
}

.quote {
    color: #ff4b91;
    font-style: italic;
    margin: 15px 0;
}

button {
    background-color: #ff80ab;
    color: white;
    border: none;
    border-radius: 25px;
    padding: 12px 25px;
    cursor: pointer;
    font-size: 16px;
    transition: 0.3s ease;
    box-shadow: 0 4px 10px rgba(255, 105, 180, 0.3);
}

button:hover {
    background-color: #ff4b91;
    transform: scale(1.1);
}

#loveMessage {
    margin-top: 15px;
    color: #ff4081;
    font-weight: bold;
    font-size: 18px;
    line-height: 1.5;
    animation: fadeIn 1s ease-in-out;
}

.hidden {
    display: none;
}

/* ======== EMOJI MELAYANG LEMBUT ======== */
.floating-shape {
    position: fixed;
    bottom: -50px;
    animation: floatUp linear infinite;
    opacity: 0.85;
    pointer-events: none;
    z-index: 5;
}

@keyframes floatUp {
    0% {
        transform: translateY(0) translateX(0) rotate(0deg);
        opacity: 1;
    }
    50% {
        transform: translateY(-50vh) translateX(30px) rotate(180deg);
        opacity: 0.9;
    }
    100% {
        transform: translateY(-120vh) translateX(-30px) rotate(360deg);
        opacity: 0;
    }
}

/* ======== ANIMASI MASUK ======== */
@keyframes fadeIn {
    from { opacity: 0; transform: scale(0.8); }
    to { opacity: 1; transform: scale(1); }
}