:root {
    /* NF Framework Colors (Mapped to MZ Colors) */
    --nf-primary: var(--mz-blue);
    --nf-success: var(--mz-green);
    --nf-danger:  var(--mz-red);
    --nf-info:    var(--mz-three);
    --nf-neutral: var(--mz-grey);
    --nf-white:   var(--mz-white);

    /* Light Variants (Backgrounds) */
    --nf-success-bg: #e8f5e9;
    --nf-success-text: #2e7d32;
    --nf-success-border: #c8e6c9;

    --nf-danger-bg: #ffebee;
    --nf-danger-text: #c62828;
    --nf-danger-border: #ffcdd2;

    --nf-warning-bg: #fff3e0;
    --nf-warning-text: #ef6c00;
    --nf-warning-border: #ffe0b2;

    --nf-info-bg: #e1f5fe;
    --nf-info-text: #0277bd;
    --nf-info-border: #b3e5fc;

    --nf-neutral-bg: #f5f5f5;
    --nf-neutral-text: #616161;
    --nf-neutral-border: #e0e0e0;

    /* Primary (Bootstrap-like Blue) */
    --nf-primary-bg: #cfe2ff;
    --nf-primary-text: #084298;
    --nf-primary-border: #b6d4fe;
}

/* --- Badges --- */
.nf-badge {
    display: inline-flex;
    align-items: center;
    padding: 0.35em 0.65em;
    font-size: 0.75em;
    font-weight: 700;
    line-height: 1;
    border-radius: 4px;
    white-space: nowrap;
    vertical-align: baseline;
}

/* Solid Badges */
.nf-badge-success { background-color: var(--nf-success); color: var(--nf-white); }
.nf-badge-danger  { background-color: var(--nf-danger);  color: var(--nf-white); }
.nf-badge-info    { background-color: var(--nf-info);    color: var(--nf-white); }
.nf-badge-neutral { background-color: var(--nf-neutral); color: var(--nf-white); }

/* Light Badges (Subtle) */
.nf-badge-light-success { background-color: var(--nf-success-bg); color: var(--nf-success-text); }
.nf-badge-light-danger  { background-color: var(--nf-danger-bg);  color: var(--nf-danger-text); }
.nf-badge-light-warning { background-color: var(--nf-warning-bg); color: var(--nf-warning-text); }
.nf-badge-light-info    { background-color: var(--nf-info-bg);    color: var(--nf-info-text); }
.nf-badge-light-neutral { background-color: var(--nf-neutral-bg); color: var(--nf-neutral-text); }

/* --- Alerts (nf-alert) --- */
.nf-alert {
    position: relative;
    padding: 1rem 1rem;
    /*margin-bottom: 1rem;*/
    border: 1px solid transparent; /* Standard Border */
    border-radius: 0.25rem;
    font-weight: 500;
}

.nf-alert-success { background-color: var(--nf-success-bg); color: var(--nf-success-text); border-color: var(--nf-success-border); }
.nf-alert-danger  { background-color: var(--nf-danger-bg);  color: var(--nf-danger-text);  border-color: var(--nf-danger-border); }
.nf-alert-warning { background-color: var(--nf-warning-bg); color: var(--nf-warning-text); border-color: var(--nf-warning-border); }
.nf-alert-info    { background-color: var(--nf-info-bg);    color: var(--nf-info-text);    border-color: var(--nf-info-border); }
.nf-alert-neutral { background-color: var(--nf-neutral-bg); color: var(--nf-neutral-text); border-color: var(--nf-neutral-border); }
.nf-alert-primary { background-color: var(--nf-primary-bg); color: var(--nf-primary-text); border-color: var(--nf-primary-border); }

/* --- Mail Icon & Badge --- */
.mail-icon {
    display: inline-block;
    width: 24px;
    height: 24px;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' viewBox='0 0 24 24' fill='none' stroke='%23333' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M4 4h16c1.1 0 2 .9 2 2v12c0 1.1-.9 2-2 2H4c-1.1 0-2-.9-2-2V6c0-1.1.9-2 2-2z'%3E%3C/path%3E%3Cpolyline points='22,6 12,13 2,6'%3E%3C/polyline%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: center;
    vertical-align: middle;
    margin-right: 5px;
}

.nav-badge {
    position: absolute;
    top: 15px;
    right: auto;
    margin-left: -10px;
    padding: 0.2em 0.4em;
    font-size: 0.65em;
    border-radius: 50%;
    min-width: 1.4em;
    text-align: center;
    justify-content: center;
    box-shadow: 0 0 0 2px #fff;
}

/* --- Ghost Button (Transparent, Hover-Effekt) --- */
.btn-ghost {
    background-color: transparent;
    border: 1px solid transparent; /* Platzhalter für Layout-Stabilität */
    color: #333;
    transition: all 0.2s ease-in-out;
    border-radius: 4px; /* Leicht abgerundet */
}

.btn-ghost:hover,
.btn-ghost:focus,
.btn-ghost:active {
    background-color: #f1f3f4; /* Sehr helles Grau */
    color: #000;
    border-color: transparent;
    text-decoration: none;
}

/* Dropdown Button Anpassung für Ghost */
.dropbtn.btn-ghost {
    padding: 0 10px; /* Etwas Luft */
}

/* NEU: Nav Icon Button (Quadratisch oder mit festem Padding) */
.btn-nav-icon {
    height: 42px;
    padding: 0 10px;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Speziell für Mail-Icon (quadratisch) */
.btn-nav-icon.btn-square {
    width: 42px;
    padding: 0;
}