body {
    font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    background: #0f172a;
    color: #e5e7eb;
    margin: 0;
    padding: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
}

.card {
    background: #020617;
    border-radius: 12px;
    padding: 24px 28px;
    box-shadow: 0 20px 40px rgba(0,0,0,0.4);
    min-width: 320px;
    max-width: 420px;
}

h1 {
    margin-top: 0;
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

label {
    display: block;
    font-size: 0.85rem;
    margin-bottom: 4px;
}

input[type="text"],
input[type="password"] {
    width: 100%;
    padding: 8px 10px;
    border-radius: 8px;
    border: 1px solid #1e293b;
    margin-bottom: 10px;
    background: #020617;
    color: #e5e7eb;
}

button {
    width: 100%;
    padding: 8px 12px;
    border-radius: 8px;
    border: none;
    font-size: 0.9rem;
    cursor: pointer;
    background: #1d4ed8;
    color: white;
    transition: transform 0.05s ease, box-shadow 0.05s ease, background 0.1s ease;
}

button:hover {
    background: #2563eb;
    box-shadow: 0 8px 18px rgba(37,99,235,0.35);
    transform: translateY(-1px);
}

button:active {
    transform: translateY(0);
    box-shadow: none;
}

.error {
    color: #f97316;
    font-size: 0.8rem;
    margin-bottom: 8px;
}