* { box-sizing: border-box; margin: 0; padding: 0; }
body {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #74b9ff 0%, #0984e3 100%);
    font-family: 'Segoe UI', system-ui, sans-serif;
}
.card {
    background: white;
    border-radius: 20px;
    padding: 48px 40px;
    width: 100%;
    max-width: 460px;
    box-shadow: 0 20px 60px rgba(0,0,0,0.15);
    text-align: center;
}
.logo-wrapper {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    margin-bottom: 28px;
}
.logo-wrapper img {
    height: 150px;
    width: auto;
    max-width: 60%;
}
.logo-wrapper h1 {
    font-size: 1.8rem;
    color: #2d3436;
    font-weight: 700;
}
.sub { color: #636e72; margin-bottom: 28px; font-size: 0.95rem; }
label { display: block; text-align: left; font-size: 0.85rem; font-weight: 600; color: #2d3436; margin-bottom: 6px; }
input[type=text], input[type=password] {
    width: 100%;
    padding: 12px 16px;
    border: 2px solid #dfe6e9;
    border-radius: 10px;
    font-size: 1rem;
    margin-bottom: 20px;
    transition: border-color 0.2s;
    text-align: left;
}
input[type=text]:focus, input[type=password]:focus {
    outline: none;
    border-color: #0984e3;
}
button[type=submit] {
    width: 100%;
    padding: 14px;
    background: #0984e3;
    color: white;
    border: none;
    border-radius: 10px;
    font-size: 1.05rem;
    font-weight: 700;
    cursor: pointer;
    transition: background 0.2s;
}
button[type=submit]:hover { background: #0773c5; }
.errore {
    background: #fff5f5;
    color: #c0392b;
    border: 1px solid #f5c6cb;
    border-radius: 10px;
    padding: 12px;
    margin-bottom: 20px;
    font-size: 0.9rem;
    text-align: left;
}