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

body {
    min-height: 100vh;
    background: linear-gradient(135deg, #050505, #0b2418);
    color: white;
    padding: 20px;
}

.container {
    width: 100%;
    max-width: 900px;
    margin: auto;
}

h1 {
    text-align: center;
    margin: 20px 0 10px;
}

.subtitle {
    text-align: center;
    color: #b7b7b7;
    margin-bottom: 25px;
}

.form-card,
.preview-card {
    background: rgba(255, 255, 255, 0.08);
    border: 1px solid rgba(0, 255, 130, 0.2);
    border-radius: 20px;
    padding: 25px;
    margin-bottom: 25px;
    box-shadow: 0 0 25px rgba(0, 255, 120, 0.12);
}

label {
    display: block;
    margin-top: 18px;
    margin-bottom: 7px;
    color: #00ff88;
    font-weight: bold;
}

input,
select,
textarea {
    width: 100%;
    padding: 13px;
    border-radius: 10px;
    border: 1px solid #333;
    background: #111;
    color: white;
    font-size: 16px;
    outline: none;
}

input:focus,
select:focus,
textarea:focus {
    border-color: #00ff88;
    box-shadow: 0 0 10px rgba(0, 255, 136, 0.2);
}

textarea {
    resize: vertical;
}

button {
    width: 100%;
    margin-top: 25px;
    padding: 15px;
    border: none;
    border-radius: 50px;
    background: #00c853;
    color: white;
    font-size: 17px;
    font-weight: bold;
    cursor: pointer;
}

button:hover {
    background: #00e676;
    transform: scale(1.02);
}

.preview-card h2 {
    text-align: center;
    margin-bottom: 20px;
}

#preview {
    min-height: 400px;
    padding: 30px 20px;
    border-radius: 20px;
    text-align: center;
    background: radial-gradient(circle at top, #124d31, #030303 70%);
    border: 1px solid rgba(0, 255, 136, 0.3);
}

.preview-gift {
    font-size: 80px;
    margin: 20px;
    filter: drop-shadow(0 0 20px #00ff88);
    animation: floating 2s ease-in-out infinite;
}

#previewTitle {
    color: white;
    font-size: 28px;
}

#previewName {
    color: #00ff88;
    margin: 15px 0;
}

#previewDate {
    color: #ddd;
}

.preview-message {
    margin: 25px auto;
    max-width: 600px;
    padding: 20px;
    line-height: 1.8;
    white-space: pre-line;
    color: #eee;
}

@keyframes floating {
    0%, 100% {
        transform: translateY(0);
    }

    50% {
        transform: translateY(-12px);
    }
}

@media (max-width: 500px) {

    body {
        padding: 12px;
    }

    .form-card,
    .preview-card {
        padding: 18px;
    }

    #previewTitle {
        font-size: 23px;
    }

    .preview-gift {
        font-size: 65px;
    }
  }
.developer-credit {
    text-align: center;
    padding: 20px 10px;
    margin-top: 30px;
    font-size: 12px;
    letter-spacing: 2px;
    opacity: 0.6;
    }