:root{
	--bar-height: 60px;
  	--icon-size: clamp(20px, calc(var(--bar-height) * 0.55), 36px);
  	--wsu-muted-bg: #f3f4f7;
 	--wsu-muted-stroke: #d9dde7;
  	--wsu-active-tint: rgba(21,101,192,0.10);
  	--wsu-active-tint-alt: rgba(198,40,40,0.10);
  	--wsu-text: #1b1f2a;
}

@supports (height: 1dvh) {
	:root {
		--bar-height: clamp(52px, 7dvh, 68px);
	}
}

@media (max-width: 480px){
  @supports (height: 1dvh){
    :root{ --bar-height: clamp(50px, 7dvh, 64px); }
  }
}

/* Container der Menüzeile */
.topbar{
  border-bottom:1px solid var(--wsu-navy);
  background: var(--wsu-white);
}

/* 3-Spalten-Layout: links (Logo), mitte (Titel), rechts (Einstellungen) */
.topbar-inner{
  margin:0 auto;
  max-width: var(--content-max);
  display:grid;
  grid-template-columns: auto 1fr auto;
  align-items:center;
  height:var(--bar-height);
}

/* Linke Zelle: weißer Hintergrund hinter dem Logo */
.topbar-left{
  background:var(--wsu-white);
  height:100%;
  display:flex;
  align-items:center;
  padding-inline:12px;
}
.topbar-logo{
  height: calc(var(--bar-height) - 16px);
  width:auto;
}

/* Mittlere Zelle: roter Hintergrund, zentrierter Schriftzug */
.topbar-center{
  background:var(--color-blue);
  height:100%;
  display:flex;
  align-items:center;
  justify-content:center;
  text-align:center;
  padding-inline:12px;
}
.brand{
  font-family: var(--font-brand);
  font-weight:800;
  letter-spacing:0.5px;
  font-size: clamp(20px, 3.6vw, 28px);
  line-height:1;
  user-select:none;
  white-space:nowrap;
}
.brand-wsu,
.brand-lay{
  color:var(--color-white); 
}
.brand-p{
  color:var(--color-red); 
  font-size: 1.08em;
  letter-spacing: 0.8px;
  transform: translateY(-0.5px);
  text-shadow: 0 0 0 0.01px currentColor;
}

/* Rechte Zelle: roter Hintergrund + navyblaues Einstellungs-Symbol */
.topbar-right{
  background:var(--color-red);
  height:100%;
  display:flex;
  align-items:center;
  padding-inline:8px 12px;
}
.icon-btn{
  width: clamp(40px, calc(var(--bar-height) - 18px), 52px);
  height: clamp(40px, calc(var(--bar-height) - 18px), 52px);
  border-radius: 8px;
  border: none;
  background: transparent;
  color: var(--color-white);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  outline-offset: 2px;
  transition: transform 120ms ease, filter 120ms ease;
}
.icon-btn:hover{
  filter:brightness(0.95);
}
.icon-btn:focus-visible{
  outline:2px solid var(--wsu-white);
}

.icon-btn .icon-img{
  	display:block;
  	width:28px;
  	height:28px;
  	image-rendering:auto;
}

.icon-settings {
	display:block;
  	width: var(--icon-size);
 	 height: var(--icon-size);
  	background: var(--color-white);
 	 -webkit-mask-image: url("../images/settings_no_bg_white.png"); mask-image: url("../images/settings_no_bg_white.png");
 	 -webkit-mask-repeat:no-repeat;  mask-repeat:no-repeat;
  	-webkit-mask-position:center;   mask-position:center;
  	-webkit-mask-size:contain;      mask-size:contain;	
}


.filter-bar{
  padding: 0;
  background: transparent;
}

.filter-grid{
  display: grid;
  grid-template-columns: repeat(2, minmax(0,1fr));
  gap: 0;
  max-width: var(--content-max);
  margin: 0 auto;
}

.filter-btn{
  appearance: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  min-height: 44px; /* Touch-Ziel */
  padding: 10px 12px;
  border-radius: 0px;
  border: 1px solid var(--wsu-muted-stroke);
  margin: 0;
  background: var(--wsu-muted-bg);
  color: var(--wsu-text);
  font-weight: 600;
  letter-spacing: .2px;
  transition: background-color .15s ease, border-color .15s ease, color .15s ease;
}

/* dezente Farb-Einbindung in Normalzustand via farbiger Outline on focus/hover */
.filter-btn:hover{
}
.filter-btn:focus-visible{
  outline: 3px solid color-mix(in srgb, var(--wsu-blue) 35%, transparent);
  outline-offset: 2px;
}

/* Aktivzustand: dezent getönt, nicht vollflächig */
.filter-btn.is-active{
  background:
    linear-gradient(0deg, var(--wsu-active-tint), var(--wsu-active-tint))
    /* fallback helles Muster */ ;
  box-shadow: inset 0 0 0 1px color-mix(in srgb, var(--wsu-blue) 20%, transparent);
}

/* Radio-Bereich */
.scope-controls{
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  padding: 10px 0px 0;
  border: 0;
}

.scope-option{
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 0;
  border: 0;
  background: transparent;
  color: var(--wsu-text);
  font-size: 0.8rem;
  line-height: 1.2;
}

.scope-option input[type="radio"]{
  accent-color: var(--wsu-blue);
  transform: scale(0.95);
}

/* A11y */
.visually-hidden{
  position: absolute !important;
  height: 1px; width: 1px;
  overflow: hidden;
  clip: rect(1px,1px,1px,1px);
  white-space: nowrap;
}

@media (min-width: 521px){
  	.filter-grid :nth-child(2n){ border-left-width: 0; }
  	.filter-grid :nth-child(n+3){ border-top-width: 0; }
  	.filter-grid .filter-btn:nth-child(-n+2){ border-top-width: 0;}
}

/* Mobil (1 Spalte): normale Kanten oben/links wieder aktiv lassen */
@media (max-width: 520px){
  .filter-grid{ grid-template-columns: 1fr; }
  .filter-grid .filter-btn{ border-left-width: 1px; }
  .filter-grid .filter-btn:nth-child(n+2){ border-top-width: 0; }
}

[hidden] {
	display: none !important;
}

/* ===== Aktivitäts-Dialog (2.5) ========================================= */
[hidden]{ display:none !important; } /* failsafe, falls noch nicht vorhanden */

.activity-dialog-backdrop{
  position: fixed; inset: 0;
  background: rgba(0,0,0,0.35);
  display: grid; place-items: center;
  z-index: 1000;
}

.activity-dialog{
  width: min(720px, 92vw);
  max-height: 86vh;
  display: flex; flex-direction: column;
  background: var(--wsu-white, #fff);
  color: var(--wsu-navy);
  border: 1px solid var(--wsu-muted-stroke);
  border-radius: 12px;
  box-shadow: 0 10px 30px rgba(0,0,0,0.18);
  overflow: hidden;
}

.activity-header{
  display: flex; align-items: center; justify-content: space-between;
  padding: 12px 16px;
  border-bottom: 1px solid var(--wsu-muted-stroke);
  background: #f9fafc;
}
.activity-header h2{
  margin: 0; font-size: 1.1rem;
}
.activity-close{
  appearance: none; border: 0; background: transparent;
  font-size: 1.6rem; line-height: 1; cursor: pointer; color: #556;
}

.activity-form{
  padding: 12px 16px 0 16px;
}

.activity-selectall{
  margin-bottom: 10px;
}
.selectall-label{
  display: inline-flex; align-items: center; gap: 8px;
  font-weight: 600;
}

.activity-list{
  overflow: auto;
  max-height: 54vh;
  display: grid;
  grid-template-columns: 1fr;
  gap: 8px;
  padding-bottom: 8px;
}
.activity-item{
  display: flex; align-items: center; justify-content: space-between;
  gap: 12px;
  border: 1px solid var(--wsu-muted-stroke);
  border-radius: 8px;
  padding: 10px 12px;
  background: #fff;
}
.activity-item label{
  display: flex; gap: 10px; align-items: center; cursor: pointer;
  font-weight: 500;
}
.activity-item .date{
  color: #4a5568; font-size: .95rem; white-space: nowrap;
}
.activity-item input[type="checkbox"]{
  accent-color: var(--wsu-blue, #1565c0);
}

.activity-footer{
  display: flex; gap: 10px; justify-content: flex-end;
  padding: 12px 16px;
  border-top: 1px solid var(--wsu-muted-stroke);
  background: #f9fafc;
}
.btn-primary, .btn-secondary{
  appearance: none; border-radius: 8px; min-height: 38px;
  padding: 8px 14px; font-weight: 700; cursor: pointer;
}
.btn-primary{
  color: #fff; background: var(--wsu-blue, #1565c0); border: 1px solid transparent;
}
.btn-secondary{
  color: var(--wsu-text, #1b1f2a); background: #fff; border: 1px solid var(--wsu-muted-stroke);
}

/* Mobile Kompaktlayout */
@media (max-width: 520px){
  .activity-dialog-backdrop{
    align-items: end; 
  }
  .activity-dialog{
    width: 100vw;
    max-height: calc(100svh - 8px);
    border-radius: 12px 12px 0 0;
    transform: translateY(0);
  }
  .activity-header, .activity-footer{
    padding-inline: max(16px, env(safe-area-inset-left));
    padding-inline-end: max(16px, env(safe-area-inset-right));
  }
  .activity-form{ 
    padding-inline: max(16px, env(safe-area-inset-left));
    padding-inline-end: max(16px, env(safe-area-inset-right));
  }
  .activity-item{ padding: 14px; }
  .activity-item .date{ font-size: .95rem; }
}