/* ===== Sites – Professionelles Design ===== */
:root {
    --sites-primary: #0d47a1;
    --sites-primary-dark: #082e6b;
    --sites-primary-light: #1565c0;
    --sites-accent-server: #c62828;
    --sites-accent-net: #e65100;
    --sites-accent-web: #0277bd;
    --sites-accent-lab: #1a237e;
    --sites-accent-project: #00695c;
    --sites-accent-contact: #ef6c00;
    --sites-text: #212121;
    --sites-text-muted: #546e7a;
    --sites-bg: #f5f7fa;
    --sites-card-bg: #ffffff;
    --sites-border: #e2e8f0;
    --sites-shadow: 0 1px 3px rgba(0,0,0,.06);
    --sites-shadow-md: 0 4px 12px rgba(0,0,0,.08);
    --sites-shadow-hover: 0 12px 28px rgba(0,0,0,.12);
    --sites-radius: 10px;
    --sites-radius-sm: 6px;
    --sites-navbar-bg: #ffffff;
    --sites-footer-bg: #263238;
    --sites-footer-text: #b0bec5;
    --sites-footer-link: #90caf9;
    --sites-font: "Segoe UI", system-ui, -apple-system, BlinkMacSystemFont, Roboto, "Helvetica Neue", Arial, sans-serif;
    --sites-space: 0.25rem;
    --sites-space-md: 0.75rem;
    --sites-space-lg: 1.5rem;
    --sites-space-xl: 2rem;
}

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

html {
    scroll-padding-top: 80px;
    height: 100%;
}

html, body {
    min-height: 100%;
    color: var(--sites-text);
    background: var(--sites-bg);
    font-family: var(--sites-font);
    font-size: 1rem;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

body {
    display: flex;
    flex-direction: column;
}

.sites-sticky-wrap {
    flex: 1 0 auto;
    display: flex;
    flex-direction: column;
    min-height: 0;
}

.sites-sticky-wrap > .container-fluid {
    flex: 1 0 auto;
}

/* ----- Typography ----- */
h1 {
    font-size: clamp(1.625rem, 3.5vw, 2rem);
    font-weight: 700;
    margin-top: var(--sites-space-lg);
    margin-bottom: var(--sites-space-md);
    letter-spacing: -0.02em;
    line-height: 1.3;
    color: var(--sites-text);
}

h2 {
    font-size: 1.375rem;
    font-weight: 600;
    margin-top: 1.25rem;
    margin-bottom: 0.5rem;
    color: var(--sites-text);
}

h3 {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--sites-text);
}

.sites-content p {
    margin-bottom: 1rem;
    max-width: 65ch;
    color: var(--sites-text);
}

.sites-content a {
    color: var(--sites-primary);
    text-decoration: none;
    font-weight: 500;
    border-bottom: 1px solid transparent;
    transition: color .2s ease, border-color .2s ease;
}

.sites-content a:hover {
    color: var(--sites-primary-dark);
    border-bottom-color: var(--sites-primary);
}

/* ----- Header strip (below navbar) ----- */
.sites-header-strip {
    padding-top: 72px;
    margin-bottom: var(--sites-space-xl);
}

.header_top {
    display: block;
    position: relative;
    z-index: 0;
    padding: 1rem 0;
    background: var(--sites-navbar-bg);
    border-bottom: 1px solid var(--sites-border);
}

.header_top .row {
    margin-bottom: 0;
}

.header_top #logo {
    max-height: 56px;
    width: auto;
    height: auto;
    object-fit: contain;
}

.header_headline_slogan {
    font-size: 0.8125rem;
    font-weight: 600;
    color: var(--sites-text-muted);
    letter-spacing: 0.12em;
    text-transform: uppercase;
    margin: 0;
}

.header_bottom {
    display: block;
    position: relative;
    z-index: 1;
    width: 100%;
    height: 6px;
    min-height: 6px;
    margin: 0;
    padding: 0;
    border: none;
    background: linear-gradient(90deg, var(--sites-primary-light) 0%, var(--sites-primary) 100%);
    border-radius: 0 0 var(--sites-radius-sm) var(--sites-radius-sm);
}

/* ----- Navbar ----- */
.sites-navbar {
    background: var(--sites-navbar-bg) !important;
    box-shadow: 0 1px 0 var(--sites-border);
    padding: 0.625rem 0;
}

.sites-navbar .navbar-brand {
    font-weight: 700;
    font-size: 1.125rem;
    letter-spacing: -0.01em;
    color: var(--sites-primary) !important;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.sites-navbar .navbar-brand img {
    height: 28px;
    width: auto;
}

.sites-navbar .nav-link {
    color: var(--sites-text) !important;
    font-weight: 500;
    font-size: 0.9375rem;
    padding: 0.5rem 0.75rem !important;
    border-radius: var(--sites-radius-sm);
    transition: background .2s ease, color .2s ease;
}

.sites-navbar .nav-link:hover {
    background: var(--sites-bg);
    color: var(--sites-primary) !important;
}

.sites-navbar .dropdown-menu {
    border-radius: var(--sites-radius-sm);
    box-shadow: var(--sites-shadow-md);
    border: 1px solid var(--sites-border);
    padding: 0.5rem;
    margin-top: 0.25rem;
}

.sites-navbar .dropdown-item {
    border-radius: 6px;
    padding: 0.5rem 0.75rem;
    font-size: 0.9375rem;
}

.sites-navbar .dropdown-item:hover {
    background: var(--sites-bg);
}

/* ----- Service/Quick-nav cards ----- */
.sites-nav-cards {
    margin-bottom: var(--sites-space-xl);
}

.sites-nav-cards .row {
    --bs-gutter-x: 1rem;
    --bs-gutter-y: 1rem;
}

.sites-box {
    display: block;
    height: 100%;
    min-height: 110px;
    padding: 1.25rem 1rem 1.25rem 4rem;
    border-radius: var(--sites-radius);
    color: #fff !important;
    text-decoration: none !important;
    font-size: 0.9375rem;
    font-weight: 600;
    letter-spacing: 0.03em;
    background-repeat: no-repeat;
    background-position: 1.25rem center;
    background-size: 32px 32px;
    box-shadow: var(--sites-shadow);
    transition: transform .25s ease, box-shadow .25s ease;
    border: 1px solid rgba(0,0,0,.06);
}

.sites-box:hover {
    transform: translateY(-3px);
    box-shadow: var(--sites-shadow-hover);
    color: #fff !important;
}

.sites-box:focus-visible {
    outline: 2px solid var(--sites-primary);
    outline-offset: 2px;
}

.sites-box.link_highlighted {
    box-shadow: 0 0 0 2px rgba(255,255,255,.5);
}

.sites-box.main_img1 { background-color: var(--sites-accent-server); background-image: url(/images/icon_server.png); }
.sites-box.main_img2 { background-color: var(--sites-accent-net);   background-image: url(/images/icon_netz2.png); }
.sites-box.main_img3 { background-color: var(--sites-accent-web);   background-image: url(/images/icon_web.png); }
.sites-box.main_img4 { background-color: var(--sites-accent-lab);   background-image: url(/images/icon_lab.png); }
.sites-box.main_img5 { background-color: var(--sites-accent-project); background-image: url(/images/icon_info.png); }
.sites-box.main_img6 { background-color: var(--sites-accent-contact); background-image: url(/images/icon_kontakt.png); }

.css-rel-path .sites-box.main_img1 { background-image: url(../images/icon_server.png); }
.css-rel-path .sites-box.main_img2 { background-image: url(../images/icon_netz2.png); }
.css-rel-path .sites-box.main_img3 { background-image: url(../images/icon_web.png); }
.css-rel-path .sites-box.main_img4 { background-image: url(../images/icon_lab.png); }
.css-rel-path .sites-box.main_img5 { background-image: url(../images/icon_info.png); }
.css-rel-path .sites-box.main_img6 { background-image: url(../images/icon_kontakt.png); }

/* ----- Main content ----- */
.main_text {
    margin-top: var(--sites-space-lg);
}

.sites-content-card {
    background: var(--sites-card-bg);
    border-radius: var(--sites-radius);
    box-shadow: var(--sites-shadow);
    padding: 1.75rem 2rem;
    border: 1px solid var(--sites-border);
    border-left: 4px solid var(--sites-primary);
}

.home_bg,
.docs_bg,
.server_bg,
.net_bg,
.web_bg,
.lab_bg,
.contact_bg {
    background-repeat: no-repeat;
    background-position: top right;
    background-size: 100px auto;
}

.home_bg     { background-image: url(/images/bg_home.png); }
.docs_bg    { background-image: url(/images/bg_docs.png); }
.server_bg  { background-image: url(/images/bg_server.png); }
.net_bg     { background-image: url(/images/bg_netz.png); }
.web_bg     { background-image: url(/images/bg_web.png); }
.lab_bg     { background-image: url(/images/bg_lab.png); }
.contact_bg { background-image: url(/images/bg_kontakt.png); }

/* ----- Footer ----- */
.sites-footer {
    flex-shrink: 0;
    background: var(--sites-footer-bg);
    color: var(--sites-footer-text);
    font-size: 0.875rem;
    padding: 1.25rem 0;
    margin-top: auto;
    border-top: 1px solid rgba(255,255,255,.06);
}

.sites-footer a.nav_footer,
.sites-footer a.nav_footer:link,
.sites-footer a.nav_footer:visited,
.sites-footer a.nav_footer:active {
    color: var(--sites-footer-link);
    text-decoration: none;
    font-weight: 500;
}

.sites-footer a.nav_footer:hover {
    color: #fff;
    text-decoration: underline;
}

/* ----- Utilities ----- */
.link_highlighted {
    font-size: 1rem !important;
    color: var(--sites-primary) !important;
}

.advices_powershell_help {
    font-size: 1.0625rem;
}

.web_warning {
    padding: 0.75rem 1rem;
    border-radius: var(--sites-radius-sm);
    background: #fff8e1;
    border: 1px solid #ffc107;
}

.projects-texts {
    padding-top: 0.5rem;
    padding-bottom: 1rem;
}

.sites-error-actions .btn {
    border-radius: var(--sites-radius-sm);
    font-weight: 600;
    padding: 0.6rem 1.25rem;
}

/* ----- Responsive ----- */
@media (max-width: 991.98px) {
    .sites-box {
        min-height: 96px;
        padding-left: 3.5rem;
        background-size: 28px 28px;
        background-position: 1rem center;
    }
}

@media (max-width: 575.98px) {
    .header_headline_slogan {
        text-align: center;
        letter-spacing: 0.08em;
    }
    .header_top .text-lg-end {
        text-align: center !important;
        margin-top: 0.5rem;
    }
    .sites-content-card {
        padding: 1.25rem 1.5rem;
        border-left-width: 3px;
    }
}