:root{
  --mkd-red:#d4001a;
  --mkd-red-dark:#a90014;
  --mkd-text:#111827;
  --mkd-muted:#5b6472;
  --mkd-border:#e5e7eb;
  --mkd-soft:#f7f7f8;
  --mkd-ok:#15803d;
  --mkd-warn:#d97706;
  --mkd-bad:#dc2626;
  font-family:Arial,Helvetica,sans-serif;
  color:var(--mkd-text);
  background:transparent;
}
*{box-sizing:border-box}
html,body{margin:0;padding:0;background:transparent;color:var(--mkd-text)}
body{font-size:16px;line-height:1.5}
.container{width:100%;max-width:1180px;margin:0 auto;padding:0 0 28px}
.hero{
  background:#fff;
  color:var(--mkd-text);
  border:1px solid var(--mkd-border);
  border-radius:0;
  padding:26px 30px;
  margin:0 0 20px;
  box-shadow:none;
}
.hero h1{margin:4px 0 12px;font-size:clamp(26px,3vw,38px);line-height:1.15;font-weight:600;letter-spacing:-.01em}
.hero p{max-width:850px;margin:0;line-height:1.6;color:#252525}.eyebrow{letter-spacing:.08em;text-transform:uppercase;color:var(--mkd-red);font-weight:700;font-size:13px;margin:0 0 8px}.card{background:#fff;border:1px solid var(--mkd-border);border-radius:0;padding:22px 24px;margin:18px 0;box-shadow:none}label{display:block;font-weight:700;margin-bottom:8px}.row{display:flex;gap:12px;align-items:stretch}.row input{flex:1}.check-form input,.lead-form input,.lead-form textarea{width:100%;border:1px solid #c9ced6;border-radius:0;padding:12px 13px;font-size:16px;background:#fff;color:var(--mkd-text)}.check-form input:focus,.lead-form input:focus,.lead-form textarea:focus{outline:2px solid rgba(212,0,26,.18);border-color:var(--mkd-red)}button{border:0;border-radius:0;background:var(--mkd-red);color:#fff;font-weight:800;padding:12px 20px;font-size:16px;cursor:pointer;white-space:nowrap}button:hover{background:var(--mkd-red-dark)}.alert{padding:13px 15px;border-radius:0;margin:16px 0;border-left:5px solid}.error{background:#fff1f2;color:#7f1d1d;border-color:var(--mkd-bad)}.success{background:#f0fdf4;color:#14532d;border-color:var(--mkd-ok)}.score-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:12px;margin:18px 0}.score-card{background:#fff;border:1px solid var(--mkd-border);border-top:5px solid #9ca3af;border-radius:0;padding:18px 14px;text-align:center;box-shadow:none}.score-card strong{display:block;font-size:34px;line-height:1;font-weight:800}.score-card span{display:block;margin-top:8px;color:var(--mkd-muted)}.score-card.good{border-top-color:var(--mkd-ok)}.score-card.warn{border-top-color:var(--mkd-warn)}.score-card.poor{border-top-color:var(--mkd-bad)}.score-card.total{background:var(--mkd-red);border-color:var(--mkd-red);color:white}.score-card.total span{color:#fff}.issues-card{border-top:5px solid var(--mkd-red)}.issues-card h2{margin:0 0 8px;font-size:24px}.issues-card>p{margin-top:0;color:var(--mkd-muted)}.issues{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}.issue{border:1px solid var(--mkd-border);border-left:5px solid var(--mkd-warn);border-radius:0;padding:14px;background:#fff}.issue strong{display:block;margin-bottom:6px;color:#111}.issue p{margin:0;color:#4b5563;line-height:1.45}.table-wrap{overflow-x:auto}table{width:100%;border-collapse:collapse;background:#fff}th,td{text-align:left;padding:11px 10px;border-bottom:1px solid var(--mkd-border);vertical-align:top}th{background:#f3f4f6;font-weight:800}.ok{display:inline-block;background:#e8f7ee;color:#176336;padding:3px 8px;border-radius:0;font-weight:800}.bad{display:inline-block;background:#ffe9e9;color:#8a1f1f;padding:3px 8px;border-radius:0;font-weight:800}.muted{color:var(--mkd-muted)}.lead-card{border-top:5px solid var(--mkd-red)}.lead-form{display:grid;gap:13px;max-width:760px}.checkbox{font-weight:500;display:flex;gap:10px;align-items:flex-start}.checkbox input{width:auto;margin-top:4px}@media (max-width:760px){.container{padding-bottom:20px}.hero{padding:20px}.row{flex-direction:column}.score-grid{grid-template-columns:repeat(2,1fr)}.score-card.total{grid-column:1/-1}.issues{grid-template-columns:1fr}button{width:100%}}
.form-grid{display:grid;grid-template-columns:1fr 1fr;gap:14px;align-items:end}.check-form button{margin-top:12px}.selector-unknown{margin:4px 0 8px}.check-form input:disabled{background:#f3f4f6;color:#6b7280}.score-grid.has-dkim{grid-template-columns:repeat(7,1fr)}.score-card.dkim strong{font-size:22px;line-height:1.15;min-height:50px;display:flex;align-items:center;justify-content:center}.dkim-note{margin:-8px 0 16px;color:var(--mkd-muted);font-size:14px}.score-card.dkim.warn{border-top-color:var(--mkd-warn)}.score-card.dkim.poor{border-top-color:var(--mkd-bad)}.score-card.dkim.good{border-top-color:var(--mkd-ok)}@media (max-width:900px){.score-grid.has-dkim{grid-template-columns:repeat(3,1fr)}}@media (max-width:760px){.form-grid{grid-template-columns:1fr}.score-grid.has-dkim{grid-template-columns:repeat(2,1fr)}.score-grid.has-dkim .score-card.total{grid-column:1/-1}}

button:disabled { opacity: .55; cursor: not-allowed; filter: grayscale(25%); }
.service-options{display:grid;gap:8px;margin:12px 0 14px}.service-option{background:#f7f7f7;border-left:4px solid var(--mkd-red);padding:10px 12px}.monitoring-fields{background:#fff8f8;border:1px solid #e7c6c6;padding:12px;margin:8px 0 14px}.small{font-size:14px}.lead-form textarea{width:100%;border:1px solid #c9ced6;border-radius:0;padding:12px 13px;font-size:16px;background:#fff;color:var(--mkd-text)}

/* Admin-Oberfläche */
.admin-container{max-width:1280px}
.admin-hero h1{font-size:clamp(24px,2.4vw,34px)}
.admin-nav{margin:12px 0 18px;text-align:right}.admin-nav a{color:var(--mkd-red);font-weight:700;text-decoration:none}.admin-nav a:hover{text-decoration:underline}.admin-login{max-width:520px}.admin-stats{grid-template-columns:repeat(5,1fr)}.admin-stats .score-card strong{font-size:30px}.admin-filter{margin:0 0 12px;max-width:260px}.admin-filter select,.admin-edit-form select,.admin-edit-form input,.admin-edit-form textarea{width:100%;border:1px solid #c9ced6;border-radius:0;padding:10px 12px;font-size:15px;background:#fff;color:var(--mkd-text)}.admin-table{font-size:14px}.admin-table th{white-space:nowrap}.button-link{display:inline-block;background:var(--mkd-red);color:#fff!important;text-decoration:none;font-weight:800;padding:7px 10px}.button-link:hover{background:var(--mkd-red-dark)}.admin-edit-form{display:grid;gap:12px}.admin-inline-action{margin-top:14px;padding-top:14px;border-top:1px solid var(--mkd-border)}code{background:#f3f4f6;padding:2px 5px}
@media (max-width:900px){.admin-stats{grid-template-columns:repeat(2,1fr)}.admin-table{font-size:13px}}

.admin-add{padding:0}
.admin-add-details{padding:0}
.admin-add-details summary{display:block;cursor:pointer;padding:18px 22px;font-size:20px;font-weight:800;color:var(--mkd-red);background:#fff}
.admin-add-details summary:hover{background:#fff7f7}
.admin-add-details[open] summary{border-bottom:1px solid var(--mkd-border)}
.admin-add-details form,.admin-add-details .muted{margin:18px 22px}

.hcaptcha-wrap{margin:14px 0}.admin-actions{display:flex;gap:6px;flex-wrap:wrap}.admin-actions form{display:inline}.button-secondary{background:#6b7280}.button-secondary:hover{background:#4b5563}.button-muted{background:#374151}.button-muted:hover{background:#1f2937}

.danger-zone{border-top:1px solid #fecaca;background:#fff7f7;padding:14px}
.danger-button{background:#991b1b}
.danger-button:hover{background:#7f1d1d}

/* Version 3.0 Dashboard / Vertrieb */
.admin-stats-v3{grid-template-columns:repeat(5,1fr)}
.compact-card{padding-top:16px;padding-bottom:16px}
.health-badge,.sales-badge{display:inline-block;padding:4px 8px;font-weight:800;border-radius:0;font-size:12px}
.health-badge.good,.sales-badge.good{background:#e8f7ee;color:#176336}
.health-badge.warning,.sales-badge.warning{background:#fff7ed;color:#9a3412}
.health-badge.critical,.sales-badge.critical{background:#ffe9e9;color:#8a1f1f}
.health-badge.muted,.sales-badge.muted{background:#f3f4f6;color:#6b7280}
.detail-summary{border-left:5px solid var(--mkd-red)}
.detail-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin:12px 0 18px}
.detail-grid>div{border:1px solid var(--mkd-border);padding:12px;background:#fff}
.detail-grid strong{display:block;font-size:24px;line-height:1.1}
.detail-grid span{display:block;color:var(--mkd-muted);font-size:13px;margin-top:5px}
.recommendations{margin:8px 0 0;padding-left:22px}.recommendations li{margin:5px 0}
.admin-actions form{display:inline-block;margin:3px 0}
.button-secondary,.button-muted,.danger-button{padding:7px 10px;font-size:14px}
.button-secondary{background:#15803d}.button-muted{background:#6b7280}.danger-button{background:#991b1b}
@media (max-width:1000px){.admin-stats-v3{grid-template-columns:repeat(2,1fr)}.detail-grid{grid-template-columns:repeat(2,1fr)}}
@media (max-width:600px){.detail-grid{grid-template-columns:1fr}}

/* Version 3.2 Admin-Übersicht als Akkordeon */
.admin-section-details{padding:0;margin:16px 0}
.admin-section-details>summary{display:block;cursor:pointer;padding:18px 22px;font-size:20px;font-weight:800;color:var(--mkd-text);background:#fff;border-bottom:1px solid transparent}
.admin-section-details>summary:hover{background:#f7f7f8;color:var(--mkd-red)}
.admin-section-details[open]>summary{border-bottom:1px solid var(--mkd-border)}
.admin-section-details>.admin-inner-grid,
.admin-section-details>.admin-filter,
.admin-section-details>.table-wrap,
.admin-section-details>.muted,
.admin-section-details>form{margin:18px 22px}
.admin-section-details.admin-add>form,.admin-section-details.admin-add>.muted{margin:18px 22px}

/* v3.3 Admin table refinements */
.admin-table th{vertical-align:top}
.admin-table .th-two-line{display:inline-block;line-height:1.1;white-space:normal}
.admin-table td{vertical-align:top}
.admin-filter-grid{display:grid;grid-template-columns:repeat(4,minmax(140px,1fr));gap:12px;align-items:end;margin:12px 0 16px}
.admin-filter-grid input,.admin-filter-grid select{width:100%;border:1px solid #c9ced6;border-radius:0;padding:10px 12px;font-size:15px;background:#fff;color:var(--mkd-text)}
@media (max-width:900px){.admin-filter-grid{grid-template-columns:1fr}}


/* v3.2.5 Arbeitsanzeige */
.mkd-loading-overlay{position:fixed;inset:0;background:rgba(255,255,255,.86);z-index:99999;display:none;align-items:center;justify-content:center;text-align:center;padding:24px}
.mkd-loading-overlay.is-visible{display:flex}
.mkd-loading-box{background:#fff;border:1px solid var(--mkd-border);box-shadow:0 18px 45px rgba(17,24,39,.12);padding:26px 30px;max-width:460px;width:100%}
.mkd-spinner{width:44px;height:44px;border:5px solid #e5e7eb;border-top-color:var(--mkd-red);border-radius:50%;margin:0 auto 16px;animation:mkdSpin 1s linear infinite}
.mkd-loading-box strong{display:block;font-size:20px;margin-bottom:6px}.mkd-loading-box span{color:var(--mkd-muted)}
@keyframes mkdSpin{to{transform:rotate(360deg)}}


.mailprobe-hint{border:1px solid var(--mkd-border);border-left:5px solid var(--mkd-red);background:#fff;padding:12px 14px;margin:12px 0 16px}
.mailprobe-hint p{margin:0 0 8px}
.mailprobe-hint p:last-child{margin-bottom:0}
.mailprobe-admin{background:#fafafa;border:1px solid var(--mkd-border);padding:14px;margin-top:16px}
.mailprobe-admin h3{margin-top:0}
.button-secondary{background:#6b7280}
.button-muted{background:#6b7280}

/* DFmkd Admin 4.0 */
.dfmkd-admin-header{
  position:sticky;
  top:0;
  z-index:10000;
  background:var(--mkd-red);
  color:#fff;
  box-shadow:0 6px 20px rgba(17,24,39,.16);
}
.dfmkd-admin-header-inner{
  max-width:1280px;
  margin:0 auto;
  min-height:64px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:18px;
  padding:8px 18px;
}
.dfmkd-admin-brand{
  display:flex;
  align-items:center;
  gap:12px;
  color:#fff;
  text-decoration:none;
  min-width:260px;
}
.dfmkd-admin-brand img{
  width:150px;
  height:auto;
  max-height:52px;
  object-fit:contain;
  background:#fff;
  padding:3px 6px;
}
.dfmkd-admin-brand strong{display:block;font-size:17px;line-height:1.05;letter-spacing:.01em}
.dfmkd-admin-brand small{display:block;font-size:12px;opacity:.9;line-height:1.1;margin-top:2px}
.dfmkd-admin-nav{
  display:flex;
  align-items:center;
  justify-content:flex-end;
  gap:4px;
  flex-wrap:wrap;
}
.dfmkd-admin-nav>a,
.dfmkd-nav-item>button{
  display:block;
  border:0;
  background:transparent;
  color:#fff;
  text-decoration:none;
  font-weight:800;
  font-size:15px;
  padding:10px 12px;
  cursor:pointer;
  width:auto;
}
.dfmkd-admin-nav>a:hover,
.dfmkd-nav-item>button:hover,
.dfmkd-nav-item.is-open>button{
  background:rgba(255,255,255,.16);
}
.dfmkd-nav-item{position:relative}
.dfmkd-subnav{
  display:none;
  position:absolute;
  top:100%;
  left:0;
  min-width:190px;
  background:#fff;
  border:1px solid var(--mkd-border);
  box-shadow:0 14px 35px rgba(17,24,39,.18);
  padding:6px 0;
}
.dfmkd-nav-item:hover .dfmkd-subnav,
.dfmkd-nav-item.is-open .dfmkd-subnav{display:block}
.dfmkd-subnav a{
  display:block;
  color:var(--mkd-text);
  text-decoration:none;
  font-weight:700;
  padding:9px 13px;
  white-space:nowrap;
}
.dfmkd-subnav a:hover{background:#fff1f2;color:var(--mkd-red)}
.admin-container{padding-top:22px}
.admin-hero{margin-top:0;border-top:4px solid var(--mkd-red)}
.admin-section-details{scroll-margin-top:90px}
.mailprobe-admin{scroll-margin-top:100px}
.dfmkd-detail-back{margin-top:0}

@media (max-width:900px){
  .dfmkd-admin-header-inner{align-items:flex-start;flex-direction:column;gap:8px}
  .dfmkd-admin-brand{width:100%;justify-content:space-between}
  .dfmkd-admin-nav{width:100%;justify-content:flex-start;overflow-x:auto;padding-bottom:2px}
  .dfmkd-subnav{position:static;box-shadow:none;border:0;background:rgba(255,255,255,.12);min-width:0;margin:0 0 6px 0}
  .dfmkd-subnav a{color:#fff}.dfmkd-subnav a:hover{background:rgba(255,255,255,.14);color:#fff}
}

/* DFmkd Admin 4.0.1 - Bootstrap-5-Navbar */
.bg-dfmkd{background:var(--mkd-red)!important}
.dfmkd-admin-navbar{box-shadow:0 6px 20px rgba(17,24,39,.16);z-index:1030;padding:.35rem 0}
.dfmkd-navbar-inner{max-width:1280px;margin:0 auto}
.dfmkd-bootstrap-brand{display:flex;align-items:center;gap:12px;color:#fff!important;text-decoration:none;min-width:260px;padding:.25rem 0}
.dfmkd-bootstrap-brand img{width:150px;height:auto;max-height:52px;object-fit:contain;background:#fff;padding:3px 6px;border-radius:0}
.dfmkd-brand-text{display:flex;flex-direction:column;line-height:1.1}
.dfmkd-brand-text strong{font-size:17px;letter-spacing:.01em;color:#fff}
.dfmkd-brand-text small{font-size:12px;color:rgba(255,255,255,.92);margin-top:2px}
.dfmkd-admin-navbar .navbar-nav .nav-link{color:#fff!important;padding:.7rem .85rem;border-radius:0}
.dfmkd-admin-navbar .navbar-nav .nav-link:hover,
.dfmkd-admin-navbar .navbar-nav .nav-link:focus,
.dfmkd-admin-navbar .navbar-nav .show>.nav-link{background:rgba(255,255,255,.16);color:#fff!important}
.dfmkd-admin-navbar .dropdown-menu{border-radius:0;border:1px solid var(--mkd-border);box-shadow:0 14px 35px rgba(17,24,39,.18);padding:.35rem 0;margin-top:.25rem}
.dfmkd-admin-navbar .dropdown-item{font-weight:700;padding:.55rem .9rem;color:var(--mkd-text)}
.dfmkd-admin-navbar .dropdown-item:hover,
.dfmkd-admin-navbar .dropdown-item:focus{background:#fff1f2;color:var(--mkd-red)}
.dfmkd-admin-navbar .navbar-toggler{width:auto;background:transparent!important;border:1px solid rgba(255,255,255,.6)!important;padding:.25rem .5rem;border-radius:0;color:#fff}
.dfmkd-admin-navbar .navbar-toggler:hover{background:rgba(255,255,255,.12)!important}
.dfmkd-admin-navbar button{width:auto}
.admin-container{padding-top:22px}.admin-section-details{scroll-margin-top:90px}.mailprobe-admin{scroll-margin-top:100px}
/* Alte Admin-4.0-Navigation neutralisieren, falls Browser-Cache altes Markup liefert */
.dfmkd-admin-header{display:none}

/* Öffentliches Frontend: DFmkd-Logo oben rechts */
.check-hero-with-logo{display:flex;align-items:flex-start;justify-content:space-between;gap:24px}
.check-hero-text{flex:1;min-width:0}.check-hero-logo{width:150px;height:auto;object-fit:contain;flex:0 0 auto}
@media (max-width:760px){.check-hero-with-logo{display:block}.check-hero-logo{display:block;margin:16px 0 0 auto;width:150px}}

/* DFmkd Admin 4.0.3 - robuster Sticky-Header ohne Bootstrap-Abhängigkeit */
.dfmkd-admin-header{
  position:sticky!important;
  top:0!important;
  z-index:10000!important;
  width:100%!important;
  background:var(--mkd-red)!important;
  color:#fff!important;
  box-shadow:0 6px 20px rgba(17,24,39,.16)!important;
  display:block!important;
}
.dfmkd-admin-header-inner{
  max-width:1280px!important;
  margin:0 auto!important;
  min-height:68px!important;
  display:flex!important;
  align-items:center!important;
  justify-content:space-between!important;
  gap:18px!important;
  padding:8px 18px!important;
}
.dfmkd-admin-brand{
  display:flex!important;
  align-items:center!important;
  gap:12px!important;
  color:#fff!important;
  text-decoration:none!important;
  flex:0 0 auto!important;
  min-width:280px!important;
}
.dfmkd-admin-brand img{
  width:150px!important;
  max-width:150px!important;
  height:auto!important;
  max-height:58px!important;
  object-fit:contain!important;
  display:block!important;
  background:#fff!important;
  padding:3px 6px!important;
}
.dfmkd-brand-text{display:flex!important;flex-direction:column!important;line-height:1.1!important;color:#fff!important;white-space:nowrap!important}
.dfmkd-brand-text strong{font-size:17px!important;color:#fff!important;letter-spacing:.01em!important}
.dfmkd-brand-text small{font-size:12px!important;color:rgba(255,255,255,.92)!important;margin-top:2px!important}
.dfmkd-admin-nav{
  display:flex!important;
  align-items:center!important;
  justify-content:flex-end!important;
  gap:2px!important;
  flex-wrap:wrap!important;
  margin:0!important;
}
.dfmkd-admin-nav a,
.dfmkd-nav-main{
  display:block!important;
  color:#fff!important;
  text-decoration:none!important;
  font-weight:800!important;
  font-size:15px!important;
  line-height:1.2!important;
  padding:10px 12px!important;
  background:transparent!important;
  border:0!important;
  white-space:nowrap!important;
}
.dfmkd-admin-nav a:hover,
.dfmkd-admin-nav a:focus,
.dfmkd-nav-item:hover>.dfmkd-nav-main,
.dfmkd-nav-item:focus-within>.dfmkd-nav-main{
  background:rgba(255,255,255,.16)!important;
  color:#fff!important;
}
.dfmkd-nav-item{position:relative!important;display:block!important}
.dfmkd-subnav{
  display:none!important;
  position:absolute!important;
  top:100%!important;
  left:0!important;
  min-width:190px!important;
  background:#fff!important;
  color:var(--mkd-text)!important;
  border:1px solid var(--mkd-border)!important;
  box-shadow:0 14px 35px rgba(17,24,39,.18)!important;
  padding:6px 0!important;
  margin:0!important;
}
.dfmkd-nav-item:hover>.dfmkd-subnav,
.dfmkd-nav-item:focus-within>.dfmkd-subnav{display:block!important}
.dfmkd-subnav a{
  color:var(--mkd-text)!important;
  background:#fff!important;
  padding:9px 13px!important;
  font-weight:700!important;
}
.dfmkd-subnav a:hover,
.dfmkd-subnav a:focus{background:#fff1f2!important;color:var(--mkd-red)!important}
.admin-container{padding-top:22px!important}
.admin-section-details{scroll-margin-top:95px!important}
.mailprobe-admin{scroll-margin-top:105px!important}
@media (max-width:900px){
  .dfmkd-admin-header-inner{flex-direction:column!important;align-items:flex-start!important;gap:8px!important}
  .dfmkd-admin-brand{width:100%!important;min-width:0!important}
  .dfmkd-admin-nav{width:100%!important;justify-content:flex-start!important;overflow-x:auto!important;padding-bottom:4px!important}
  .dfmkd-subnav{position:static!important;box-shadow:none!important;border:0!important;background:rgba(255,255,255,.12)!important;min-width:0!important;margin:0 0 6px 0!important}
  .dfmkd-subnav a{background:transparent!important;color:#fff!important}
  .dfmkd-subnav a:hover{background:rgba(255,255,255,.14)!important;color:#fff!important}
}


/* DFmkd Admin 4.0.4 */
.admin-hero{border-top:1px solid var(--mkd-border)!important}
.dfmkd-admin-header{border-bottom:0!important}
.dfmkd-admin-nav .dfmkd-subnav{z-index:10020}