:root {
	--primary: rgba(135, 206, 250, 1);
	--weiß: rgba(255, 255, 255, 1);
	--blau: rgba(51, 131, 255, 1);
	--dunkelblau: rgba(0,51,153,1);
	--schwarz: rgba(0, 0, 0, 1);
	--rot: rgba(128, 0, 0, 1);
  box-sizing: border-box;
}
a { cursor: pointer; }
.nav-container {
	width: 1280px;
	margin: auto;
	display: flex;
	justify-content: space-around;
}
.nav-checkbox {
	display: grid;
	grid-template-columns: 1fr 1fr;
	align-items: center;
}
.tab-nav {
	outline: none;
	display: none;
}
.navi {
	grid-column: 4;
	list-style: none;
	margin: 0;
	padding: 0;
}
nav {
	display: none;
}
nav li { display: inline-block; }
nav li:last-child { margin-right: 20px; }
nav li a {
	font-size: 18px;
	text-decoration: none;
	position: relative;
	padding: 0 5px;
}
nav ul li a::before {
	content: '';
	display: block;
	height: 1px;
	background: var(--weiß);
	position: absolute;
	bottom: -5px;
	left: 0;
	right: 0;
	transform-origin: left;
	transform: scale(0, 1);
	transition: transform ease-in-out 500ms;
}
nav ul li a::after {
	content: '';
	display: block;
	height: 1px;
	background: var(--weiß);
	position: absolute;
	bottom: -5px;
	left: 0;
	right: 0;
	transform-origin: right;
	transform: scale(0, 1);
	transition: transform ease-in-out 500ms;
}
nav ul li a:hover::before, nav ul li a:hover::after {
	transform: scale(1,1);
}

@media screen and (max-width: 1280px) {
	.nav-container {
		width: 100%;
	}
}
/* Gemeinsame SVG-Symbole. Auf der Homepage erscheinen sie nur im mobilen Menü. */
.homepage .nav-symbol {
    width: 16px; height: 16px; flex: 0 0 16px;
    fill: none; stroke: currentColor; stroke-width: 1.7;
    stroke-linecap: round; stroke-linejoin: round;
}
.homepage:not(.adminpanel) header .nav-symbol { display: none; }

/* Mobile Navigation: Homepage und Verwaltung bis 800 px. */
@media (max-width: 800px) {
.homepage .nav-container {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 44px;
    grid-template-rows: minmax(44px, auto) auto;
    align-items: center;
    min-height: 64px;
    padding: 10px 24px;
    gap: 0;
    position: relative;
}
.homepage .nav-container .logo {
    grid-column: 1;
    grid-row: 1;
    align-self: center;
    margin: 0;
    max-width: 100%;
    font-size: 23px !important;
}
.homepage .nav-container .hamburger {
    display: block;
    position: relative;
    grid-column: 2;
    grid-row: 1;
    justify-self: end;
    align-self: center;
    top: auto;
    right: auto;
    width: 44px;
    height: 44px;
    padding: 0;
    cursor: pointer;
}
.homepage .hamburger .line {
    position: absolute;
    display: block;
    left: 12px;
    width: 20px;
    height: 2px;
    background: var(--layout-text);
    border-radius: 5px;
    transition: transform .6s cubic-bezier(.5, .1, 0, 1), opacity .6s, background-color .6s;
}
.homepage .hamburger .line-1 { top: 15px; }
.homepage .hamburger .line-2 { top: 22px; }
.homepage .hamburger .line-3 { top: 29px; }
/* Das gewünschte rote Schließen-X bleibt erhalten. */
.homepage .tab-nav:checked ~ .hamburger .line-1 {
    transform: translateY(7px) rotate(-135deg); background: var(--rot); height: 3px;
}
.homepage .tab-nav:checked ~ .hamburger .line-2 { opacity: 0; }
.homepage .tab-nav:checked ~ .hamburger .line-3 {
    transform: translateY(-7px) rotate(135deg); background: var(--rot); height: 3px;
}
.homepage .nav-checkbox input.tab-nav {
    display: block; position: absolute;
    width: 1px; height: 1px; min-height: 0; min-width: 0;
    padding: 0; margin: 0; clip-path: inset(50%); overflow: hidden;
}
.homepage .tab-nav:focus-visible + .hamburger {
    outline: 3px solid var(--layout-blau); outline-offset: 4px;
}
.homepage .nav-checkbox input[type="checkbox"] ~ .navi {
    grid-column: 1 / -1; grid-row: 2;
    display: flex; flex-direction: column; align-items: stretch;
    min-height: 0; max-height: 0; height: auto; padding-top: 0; gap: 0;
    overflow: hidden; opacity: 0; visibility: hidden; text-align: left;
    transition: max-height .4s ease, padding-top .4s ease, opacity .25s ease, visibility 0s .4s;
}
.homepage .nav-checkbox input[type="checkbox"]:checked ~ .navi {
    max-height: 650px; padding-top: 16px; opacity: 1; visibility: visible;
    transition-delay: 0s;
}
.homepage .nav-container .navi li a {
    display: flex; align-items: center; gap: 6px;
    padding: 10px 0; font-size: 18px; min-height: 44px;
}

/* Trennlinien nur zwischen Menüpunkten, nicht nach dem letzten Eintrag. */
.homepage header .navi li:last-child > a { border-bottom: 0; box-shadow: none; }
.homepage header .navi li:last-child > a::before,
.homepage header .navi li:last-child > a::after { display: none; }
.homepage:not(.adminpanel) header .nav-symbol { display: inline-block; }
}

/* Die längere Verwaltungsnavigation wechselt bereits bei 1100 px. */
@media (min-width: 801px) and (max-width: 1100px) {
.adminpanel .nav-container {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 44px;
    grid-template-rows: minmax(44px, auto) auto;
    align-items: center;
    min-height: 64px;
    padding: 10px 24px;
    gap: 0;
    position: relative;
}
.adminpanel .nav-container .logo {
    grid-column: 1;
    grid-row: 1;
    align-self: center;
    margin: 0;
    max-width: 100%;
    font-size: 23px !important;
}
.adminpanel .nav-container .hamburger {
    display: block;
    position: relative;
    grid-column: 2;
    grid-row: 1;
    justify-self: end;
    align-self: center;
    top: auto;
    right: auto;
    width: 44px;
    height: 44px;
    padding: 0;
    cursor: pointer;
}
.adminpanel .hamburger .line {
    position: absolute;
    display: block;
    left: 12px;
    width: 20px;
    height: 2px;
    background: var(--layout-text);
    border-radius: 5px;
    transition: transform .6s cubic-bezier(.5, .1, 0, 1), opacity .6s, background-color .6s;
}
.adminpanel .hamburger .line-1 { top: 15px; }
.adminpanel .hamburger .line-2 { top: 22px; }
.adminpanel .hamburger .line-3 { top: 29px; }
/* Das gewünschte rote Schließen-X bleibt erhalten. */
.adminpanel .tab-nav:checked ~ .hamburger .line-1 {
    transform: translateY(7px) rotate(-135deg); background: var(--rot); height: 3px;
}
.adminpanel .tab-nav:checked ~ .hamburger .line-2 { opacity: 0; }
.adminpanel .tab-nav:checked ~ .hamburger .line-3 {
    transform: translateY(-7px) rotate(135deg); background: var(--rot); height: 3px;
}
.adminpanel .nav-checkbox input.tab-nav {
    display: block; position: absolute;
    width: 1px; height: 1px; min-height: 0; min-width: 0;
    padding: 0; margin: 0; clip-path: inset(50%); overflow: hidden;
}
.adminpanel .tab-nav:focus-visible + .hamburger {
    outline: 3px solid var(--layout-blau); outline-offset: 4px;
}
.adminpanel .nav-checkbox input[type="checkbox"] ~ .navi {
    grid-column: 1 / -1; grid-row: 2;
    display: flex; flex-direction: column; align-items: stretch;
    min-height: 0; max-height: 0; height: auto; padding-top: 0; gap: 0;
    overflow: hidden; opacity: 0; visibility: hidden; text-align: left;
    transition: max-height .4s ease, padding-top .4s ease, opacity .25s ease, visibility 0s .4s;
}
.adminpanel .nav-checkbox input[type="checkbox"]:checked ~ .navi {
    max-height: 650px; padding-top: 16px; opacity: 1; visibility: visible;
    transition-delay: 0s;
}
.adminpanel .nav-container .navi li a {
    display: flex; align-items: center; gap: 6px;
    padding: 10px 0; font-size: 18px; min-height: 44px;
}

/* Trennlinien nur zwischen Menüpunkten, nicht nach dem letzten Eintrag. */
.adminpanel header .navi li:last-child > a { border-bottom: 0; box-shadow: none; }
.adminpanel header .navi li:last-child > a::before,
.adminpanel header .navi li:last-child > a::after { display: none; }
.adminpanel:not(.adminpanel) header .nav-symbol { display: inline-block; }
}

/* Martins m/e-Markenzeichen vor dem Namen, auf Homepage und Verwaltung.
   Das Bild ist dekorativ; der danebenstehende Name beschriftet den Link. */
.homepage header .nav-container .logo {
    display: flex; flex-direction: row; align-items: center; gap: 10px;
}
.homepage header .logo .markenzeichen {
    display: block; width: 32px; height: 32px; flex: 0 0 32px;
    object-fit: contain; margin: 0; padding: 0;
}
@media (max-width: 800px) {
    .homepage header .logo .markenzeichen { width: 28px; height: 28px; flex-basis: 28px; }
}