body {
    margin: 0;
    font-family: -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background: #f0f2f5;
    color: #2c3e50;
}

main {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    box-sizing: border-box;
}

.login-card {
    width: 100%;
    max-width: 380px;
    background: #fff;
    border-radius: 10px;
    box-shadow: 0 6px 24px rgba(0, 0, 0, 0.08);
    padding: 36px 32px 32px;
    box-sizing: border-box;
}

/* Platzhalter für Logo - durch <img> ersetzen */
.login-logo {
    display: flex;
    align-items: center;
    justify-content: center;
    height: 80px;
    margin-bottom: 24px;
}

.login-logo img {
    max-height: 80px;
    max-width: 100%;
}

.login-logo-placeholder {
    width: 160px;
    height: 80px;
    border: 2px dashed #c7ccd1;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #aeb4ba;
    font-size: 13px;
    letter-spacing: 1px;
    text-transform: uppercase;
}

.login-card h1 {
    font-size: 20px;
    text-align: center;
    margin: 0 0 24px;
    font-weight: 600;
}

.login-card label {
    display: block;
    font-size: 13px;
    font-weight: 600;
    margin-bottom: 6px;
    color: #4a5560;
}

.login-card .field {
    margin-bottom: 18px;
}

.login-card input[type="text"],
.login-card input[type="password"] {
    width: 100%;
    padding: 11px 12px;
    border: 1px solid #d4d9de;
    border-radius: 6px;
    font-size: 15px;
    box-sizing: border-box;
}

.login-card input[type="text"]:focus,
.login-card input[type="password"]:focus {
    outline: none;
    border-color: #2d8cf0;
    box-shadow: 0 0 0 3px rgba(45, 140, 240, 0.15);
}

.login-btn {
    width: 100%;
    padding: 12px;
    background: #2d8cf0;
    color: #fff;
    border: none;
    border-radius: 6px;
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    margin-top: 4px;
}

.login-btn:hover {
    background: #1c7ad6;
}

.login-error {
    background: #fde8e8;
    color: #b02a2a;
    border: 1px solid #f5c2c2;
    border-radius: 6px;
    padding: 10px 12px;
    font-size: 14px;
    margin-bottom: 18px;
}