* {
    box-sizing: border-box;
}

body {
    font-family: Arial, sans-serif;
    background-color: #081521;
    margin: 0;
    padding: 0;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    color: #fff;
    padding-bottom: 20px;
}
.container {
    background: #15263a;
    padding: 20px;
    width: 100%;
    max-width: 500px;
    border-radius: 8px;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
}
h2 {
    text-align: center;
    color: #fff;
}
h3 {
    margin-top: 28px;
    padding-bottom: 8px;
    border-bottom: 1px solid #6388b2;
}
.hint {
    color: #b7c7d9;
    font-size: 14px;
}
label {
    font-weight: bold;
    display: block;
    margin-top: 20px;
}
input, textarea {
    width: 100%;
    padding: 10px;
    margin-top: 5px;
    border: 1px solid #6388b2;
    border-radius: 5px;
    font-size: 16px;
    resize: none;
    background-color: #0a1521;
    color: #fff;
}

textarea {
    height: 160px;
}
button {
    width: 100%;
    padding: 10px;
    margin-top: 15px;
    border: none;
    border-radius: 5px;
    background-color: #28a745;
    color: white;
    font-size: 18px;
    cursor: pointer;
}
button:hover {
    background-color: #218838;
}
img {
    width: 100%;
    max-height: 200px;
    object-fit: contain;
    display: block;
    margin-top: 10px;
    border-radius: 5px;
}
.error-message {
    text-align: center;
    background-color: #f8d7da;
    color: #f04153;
    padding: 10px;
    border-radius: 5px;
    margin-bottom: 10px;
    font-weight: bold;
}
.success-message {
    text-align: center;
    background-color: #d4edda;
    color: #155724;
    padding: 10px;
    border-radius: 5px;
    margin-bottom: 10px;
    font-weight: bold;
}
a {
    color: #8fc8ff;
}
.secondary-button {
    background-color: #526579;
}
.secondary-button:hover {
    background-color: #405164;
}
button:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}