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

body {
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    background: linear-gradient(135deg, #f0f4ff, #dff6e4);
    color: #333;
}

.container {
    background: #f9f9f9;
    border-radius: 25px;
    padding: 40px 35px;
    width: 100%;
    max-width: 400px;
    box-shadow: 12px 12px 24px #d1d9e6, -12px -12px 24px #ffffff;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    animation: fadeIn 0.6s ease;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.container:hover {
    transform: translateY(-6px);
    box-shadow: 16px 16px 32px #d1d9e6, -16px -16px 32px #ffffff;
}

h1 {
    font-size: 2rem;
    margin-bottom: 25px;
    text-align: center;
    color: #4a4a4a;
}

.error-message {
    background: #ffd6d6;
    color: #b00020;
    padding: 10px 15px;
    border-radius: 12px;
    margin-bottom: 15px;
    font-weight: 500;
    text-align: center;
}

form {
    display: flex;
    flex-direction: column;
    gap: 18px;
}

label {
    font-weight: 500;
    color: #555;
}

input {
    padding: 12px 16px;
    border-radius: 15px;
    border: none;
    background: #f0f3f7;
    box-shadow: inset 4px 4px 8px #d1d9e6, inset -4px -4px 8px #ffffff;
    font-size: 1rem;
    transition: all 0.3s ease;
    outline: none;
}

input:focus {
    box-shadow: inset 2px 2px 6px #d1d9e6, inset -2px -2px 6px #ffffff, 0 0 5px rgba(106,17,203,0.2);
    background: #f7f9fc;
}

button {
    padding: 14px;
    border: none;
    border-radius: 20px;
    background: linear-gradient(135deg, #6a11cb, #2575fc);
    color: #fff;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 6px 6px 16px rgba(0,0,0,0.1);
}

button:hover {
    transform: translateY(-3px);
    box-shadow: 8px 8px 20px rgba(0,0,0,0.15);
}

p {
    text-align: center;
    margin-top: 15px;
    font-size: 0.95rem;
}

a {
    color: #6a11cb;
    font-weight: 500;
    transition: all 0.3s ease;
}

a:hover {
    color: #2575fc;
}

@keyframes fadeIn {
    0% { opacity: 0; transform: translateY(-20px); }
    100% { opacity: 1; transform: translateY(0); }
}

.container form {
    margin-top: 20px; 
}

.index-container {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    background: linear-gradient(135deg, #f0f4ff, #dff6e4);
    font-family: 'Inter', sans-serif;
    text-align: center;
    padding: 20px;
}

.index-container h1 {
    font-size: 3rem;
    color: #4a4a4a;
    margin-bottom: 40px;
    text-shadow: 1px 1px 3px rgba(0,0,0,0.1);
}

.index-button-container {
    display: flex;
    gap: 25px;
    flex-wrap: wrap;
    justify-content: center;
}

.index-button-container button {
    padding: 15px 35px;
    font-size: 1.2rem;
    font-weight: 600;
    border: none;
    border-radius: 25px;
    background: linear-gradient(135deg, #6a11cb, #2575fc);
    color: #fff;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 6px 6px 16px rgba(0,0,0,0.1);
}

.index-button-container button:hover {
    transform: translateY(-3px);
    box-shadow: 8px 8px 20px rgba(0,0,0,0.15);
}

input, button {
    width: 100%;
    display: block;
}

.event-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 20px; /* space between elements */
    max-width: 500px;
    margin: 0 auto;
    padding: 30px;
    background: #f9f9f9;
    border-radius: 20px;
    box-shadow: 8px 8px 20px rgba(0,0,0,0.1);
}

h1, h2 {
    text-align: center;
}

.rsvp-list {
    list-style-type: none;
    padding: 0;
}

.rsvp-list li {
    padding: 8px 0;
    border-bottom: 1px solid #ddd;
}

.rsvp-message {
    margin-bottom: 30px; 
    font-size: 1.1rem;
    font-weight: 500;
    color: #333;
    text-align: center;
}

.rsvp-btn,
.logout-btn {
    padding: 12px 25px;
    border-radius: 20px;
    border: none;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
}

.rsvp-btn {
    background: linear-gradient(135deg, #6a11cb, #2575fc);
    color: #fff;
    margin-bottom: 20px;
}

.rsvp-btn:hover {
    transform: translateY(-2px);
}


.logout-btn:hover {
    transform: translateY(-2px);
}