* {
    box-sizing: border-box;
}

body {
    font-family: system-ui, sans-serif;
    background: #14161c;
    color: #e6e6e6;
    margin: 0;
    display: flex;
    justify-content: center;
    padding: 40px 16px;
}

.card {
    background: #1f2230;
    border-radius: 8px;
    padding: 32px;
    width: 100%;
    max-width: 420px;
}

h1 {
    margin-top: 0;
    font-size: 1.4rem;
}

label {
    display: block;
    margin: 16px 0 4px;
    font-size: 0.9rem;
    color: #a7acc0;
}

input[type="text"],
input[type="email"],
input[type="password"] {
    width: 100%;
    padding: 8px 10px;
    border-radius: 4px;
    border: 1px solid #3a3f55;
    background: #14161c;
    color: #e6e6e6;
}

button {
    margin-top: 20px;
    width: 100%;
    padding: 10px;
    border: none;
    border-radius: 4px;
    background: #4c6ef5;
    color: white;
    font-weight: 600;
    cursor: pointer;
}

button:hover {
    background: #3b5bdb;
}

.error {
    background: #4b1d1d;
    color: #ffb3b3;
    padding: 10px 12px;
    border-radius: 4px;
    margin-bottom: 12px;
}

.success {
    background: #1d4b2a;
    color: #b3ffc4;
    padding: 10px 12px;
    border-radius: 4px;
    margin-bottom: 12px;
}

table {
    width: 100%;
    border-collapse: collapse;
}

th, td {
    text-align: left;
    padding: 8px 6px;
    border-bottom: 1px solid #3a3f55;
}

nav a {
    color: #9fb0ff;
    margin-right: 12px;
    text-decoration: none;
}