* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    background: #f8fafc;
    color: #1e293b;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.container {
    background: white;
    border-radius: 12px;
    padding: 40px;
    max-width: 460px;
    width: 100%;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

h1 {
    font-size: 1.5rem;
    margin-bottom: 8px;
}

.subtitle {
    color: #64748b;
    margin-bottom: 24px;
}

.field {
    margin-bottom: 16px;
}

label {
    display: block;
    font-size: 0.875rem;
    font-weight: 500;
    margin-bottom: 4px;
    color: #475569;
}

input[type="text"],
input[type="email"] {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid #cbd5e1;
    border-radius: 6px;
    font-size: 1rem;
    transition: border-color 0.15s;
}

input:focus {
    outline: none;
    border-color: #2563eb;
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.checkbox {
    display: flex;
    align-items: center;
    gap: 8px;
    font-weight: normal;
    margin-top: 8px;
}

.checkbox input {
    width: auto;
}

button {
    width: 100%;
    padding: 12px;
    background: #2563eb;
    color: white;
    border: none;
    border-radius: 6px;
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    transition: background 0.15s;
}

button:hover {
    background: #1d4ed8;
}

.message {
    padding: 12px 16px;
    border-radius: 6px;
    margin-bottom: 16px;
}

.message.success {
    background: #f0fdf4;
    color: #166534;
    border: 1px solid #bbf7d0;
}

.message.error {
    background: #fef2f2;
    color: #991b1b;
    border: 1px solid #fecaca;
}

ul {
    margin: 12px 0;
    padding-left: 20px;
}

a {
    color: #2563eb;
}