:root {
  --cmm-border: #436161;
  --cmm-card-bg: #B2BBB8;
  --cmm-text-heading: #000000;
  --cmm-text-body: #436161;
  --cmm-button-bg: #111111;
  --cmm-button-bg-hover: #333333;
  --cmm-font: "Inter", sans-serif;
  --cmm-courses-cols: 3;
  --cmm-materials-cols: 4;
}

/* Kurse: Kachel-Grid */
.kdk-cats {
  padding: 40px;
  display: grid;
  gap: 24px;
  grid-template-columns: repeat(var(--cmm-courses-cols), 1fr);
  justify-items: stretch;
  align-items: stretch;
  box-sizing: border-box;
}
@media (max-width: 1024px) { .kdk-cats { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 640px)  { .kdk-cats { grid-template-columns: 1fr; } }

.kdk-cat {
  display: flex !important;
  flex-direction: column;
  align-items: stretch;
  justify-content: flex-start;
  width: 100% !important;
  max-width: 100% !important;
  box-sizing: border-box;
  border: 2px solid var(--cmm-border) !important;
  border-radius: 20px !important;
  background: var(--cmm-card-bg) !important;
  text-decoration: none !important;
  padding: 0 !important;
  transition: transform .15s ease, box-shadow .15s ease, border-color .15s ease;
  min-height: 150px;
}
.kdk-cat:hover {
  transform: translateY(-2px);
  border-color: var(--cmm-border);
  box-shadow: 0 6px 18px rgba(0,0,0,.06);
}

.kdk-cat-thumb {
  width: 100%;
  height: 150px;
  overflow: hidden;
  border-top-left-radius: 20px;
  border-top-right-radius: 20px;
}
.kdk-cat-thumb img,
.kdk-cat-thumb-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}
.kdk-cat-text {
  padding: 20px 24px;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}
.kdk-cat strong {
  font-family: var(--cmm-font);
  font-weight: 500;
  font-size: 18px;
  text-transform: uppercase;
  letter-spacing: 0.6px;
  line-height: 1.25;
  margin: 0 0 6px 0;
  color: var(--cmm-text-heading);
  display: block;
}
.kdk-cat span {
  font-family: var(--cmm-font);
  font-weight: 400;
  font-size: 14px;
  line-height: 1.4;
  color: var(--cmm-text-body);
  display: block;
  margin-top: auto !important;
}

/* Passwort-Bereich */
.kdk-head,
.kdk-pass-row,
.kdk-hint {
  max-width: 480px;
  margin-left: auto;
  margin-right: auto;
  padding-left: 20px;
  padding-right: 20px;
  padding-top: 20px;
  box-sizing: border-box;
}
.kdk-head h3 {
  text-align: center;
  font-family: var(--cmm-font);
  font-weight: 500;
  font-size: 22px;
  letter-spacing: 0.6px;
  text-transform: uppercase;
  margin-bottom: 20px;
  color: var(--cmm-text-heading);
}
.kdk-pass-row {
  background: #ffffff;
  border: 2px solid var(--cmm-border);
  border-radius: 18px;
  padding: 24px;
  margin-top: 10px;
  margin-bottom: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 14px;
}
.kdk-pass-row .kdk-pass {
  flex: 1;
  padding: 12px 14px;
  border-radius: 10px;
  border: 1px solid #ccc;
  font-size: 16px;
  font-family: var(--cmm-font);
}
.kdk-pass-row .kdk-unlock {
  padding: 12px 18px;
  border-radius: 10px;
  border: 1px solid var(--cmm-border);
  background: var(--cmm-border);
  color: #fff;
  cursor: pointer;
  font-size: 15px;
  font-family: var(--cmm-font);
}
.kdk-pass-row .kdk-unlock:hover { background: #304545; }
.kdk-hint {
  text-align: center;
  font-size: 13px;
  color: #555;
  font-family: var(--cmm-font);
}

/* Materialien: Kachel-Grid */
.kdk-grid {
  padding: 20px;
  display: grid;
  gap: 18px;
  grid-template-columns: repeat(var(--cmm-materials-cols), minmax(0, 1fr));
  box-sizing: border-box;
}
@media (max-width: 1280px) { .kdk-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); } }
@media (max-width: 1024px) { .kdk-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 640px)  { .kdk-grid { grid-template-columns: 1fr; } }

.kdk-card {
  border: 2px solid var(--cmm-border);
  border-radius: 20px;
  padding: 0;
  background: var(--cmm-card-bg);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  max-width: 250px;
  box-sizing: border-box;
  transition: transform .15s ease, box-shadow .15s ease, border-color .15s ease;
}
.kdk-card:hover {
  transform: translateY(-2px);
  border-color: var(--cmm-border);
  box-shadow: 0 4px 12px rgba(0,0,0,.05);
}
.kdk-thumb img {
  width: 100%;
  height: 150px;
  object-fit: cover;
  display: block;
}
.kdk-body {
  padding: 16px 18px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 8px;
  flex-grow: 1;
}
.kdk-title,
.kdk-body h4 {
  font-family: var(--cmm-font) !important;
  font-weight: 500 !important;
  font-size: 18px !important;
  text-transform: uppercase;
  letter-spacing: 0.6px;
  color: var(--cmm-text-heading) !important;
  margin: 0 0 6px 0 !important;
}
.kdk-desc,
.kdk-body p {
  font-family: var(--cmm-font) !important;
  font-weight: 400;
  font-size: 14px !important;
  line-height: 1.4;
  color: var(--cmm-text-body);
  margin: 0 0 12px 0 !important;
  opacity: .95;
}
.kdk-btn-wrap { margin-top: auto; }
.kdk-btn-wrap a {
  display: inline-block;
  text-decoration: none;
  padding: 8px 14px;
  margin-top: 8px;
  font-size: 14px;
  font-family: var(--cmm-font);
  background: var(--cmm-button-bg);
  color: #fff !important;
  border-radius: 8px;
  border: 1px solid var(--cmm-button-bg-hover);
  transition: background .15s ease, border-color .15s ease;
}
.kdk-btn-wrap a:hover { background: var(--cmm-button-bg-hover); border-color: #000; }