/* --- 1. General Styles & Background --- */
body {
    /* Formal and readable font (e.g., an elegant serif) */
    font-family: 'Times New Roman', Times, serif; 
    margin: 0;
    padding: 0;
    /* FULL GREEN BACKGROUND */
    background-color: #1E8449; 
    color: #333; 
    line-height: 1.8;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
}

/* --- Subtle Background Pattern (Removed for solid green request) --- */

/* --- 2. Container and Headers --- */
.container {
    max-width: 600px;
    width: 90%;
    background-color: #ffffff;
    padding: 50px 40px 40px 40px;
    /* --- EDITED: Neon Border/Glow Effect --- */
    box-shadow: 0 0 20px rgba(4, 106, 56, 0.6); /* Strong green glow */
    text-align: center;
    border: 2px solid #38D97D; /* Lighter, vibrant green border for contrast */
    
    /* DOME STYLE EDGING: Use large border-radius on top corners */
    border-radius: 50px 50px 10px 10px; 
    
    /* Elegant fade-in animation */
    animation: fadeInContainer 1.5s ease-out; 
    margin: 40px 0; 
}

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

.announcement {
    font-size: 1.1em;
    color: #046A38; /* Deep Green */
    font-weight: bold;
    margin-bottom: 5px;
}

h1 {
    /* Simple, formal, dark text */
    font-family: 'Georgia', serif; 
    color: #000; 
    font-size: 2.8em;
    margin-bottom: 5px;
    letter-spacing: 1px;
}

h2 {
    color: #6c757d;
    font-size: 1.2em;
    font-weight: 300;
    margin-top: 5px;
    margin-bottom: 30px;
}

/* --- 3. Event Details --- */
.details p {
    margin: 8px 0;
    color: #555;
    font-size: 1em;
}

.dress-code {
    font-weight: bold;
    color: #046A38; 
    margin-top: 15px;
    padding: 5px 0;
    border-bottom: 1px solid #e0e0e0;
}

.separator {
    border: none;
    border-top: 2px solid #046A38; /* Simple green separator */
    width: 60%;
    margin: 30px auto;
}

/* --- 4. Form and Inputs --- */
.rsvp-section h3 {
    color: #046A38;
    margin-bottom: 25px;
    font-size: 1.4em;
    font-weight: 600;
}

.form-group {
    margin-bottom: 20px;
    text-align: left;
    /* Subtle fade in for form elements */
    animation: formFadeIn 1.5s ease-out 0.5s forwards;
    opacity: 0;
}

@keyframes formFadeIn {
    to { opacity: 1; }
}

label {
    display: block;
    margin-bottom: 5px;
    font-weight: bold;
    color: #333;
}

input[type="text"],
input[type="email"],
textarea {
    width: 100%;
    padding: 12px;
    background-color: #fff;
    /* EDITED: Input borders adjusted */
    border: 1px solid #38D97D; 
    color: #333;
    border-radius: 5px;
    box-sizing: border-box;
    transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

input:focus,
textarea:focus {
    /* EDITED: Stronger Neon Glow on Focus */
    border-color: #046A38; 
    box-shadow: 0 0 10px #38D97D; /* Vibrant Green Glow */
    outline: none;
}

/* --- 5. Radio Buttons (Attendance) --- */
.attendance {
    padding-bottom: 15px;
}

.radio-group {
    display: inline-block;
    margin-right: 20px;
}

.attendance label {
    font-weight: normal;
    cursor: pointer;
    color: #555;
    display: inline;
    margin-left: 5px;
}

/* --- 6. Button Styling --- */
button[type="submit"] {
    background-color: #046A38; /* Solid Green Button */
    color: white;
    padding: 15px 30px;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    font-size: 1.1em;
    font-weight: bold;
    width: 100%;
    margin-top: 15px;
    text-transform: uppercase;
    letter-spacing: 1px;
    transition: background-color 0.3s ease, transform 0.2s ease;
}

button[type="submit"]:hover {
    background-color: #024a29; /* Darker Green on hover */
    transform: translateY(-2px); 
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
}

/* --- 7. Footer --- */
footer {
    text-align: center;
    margin-top: 30px;
    font-size: 0.9em;
    color: #046A38;
}


/* --- 8. Watermark Styling (SAMPLE overlay) --- */
#watermark {
    position: fixed; 
    top: 50%;
    left: 50%;
    
    /* Center and rotate for diagonal watermark effect */
    transform: translate(-50%, -50%) rotate(-35deg); 
    
    /* Text styling - Low opacity green */
    font-size: 8em; 
    font-weight: 900;
    color: rgba(4, 106, 56, 0.08); 
    pointer-events: none; 
    
    z-index: 9999; 
    text-transform: uppercase;
    letter-spacing: 10px;
}

/* --- 9. Basic Responsiveness --- */
@media (max-width: 600px) {
    .container {
        padding: 30px 20px;
        border-radius: 30px 30px 10px 10px; /* Adjust dome radius for mobile */
    }

    h1 {
        font-size: 2em;
    }
    
    #watermark {
        font-size: 4em;
    }
}