/* =============================================== */
/* CSS CUSTOM PROPERTIES (VARIABLEN)              */
/* =============================================== */

:root {
  /* Farben */
  --bg-primary: #222;
  --text-primary: white;
  --text-secondary: gray;
  --text-accent: rgba(255, 255, 255, 0.914);
  --text-link: rgba(255, 255, 255, 0.812);
  --bubble-bg: rgb(6, 64, 17);
  --bubble-border: rgb(100, 138, 107);
  
  /* Abstände */
  --spacing-xs: 8px;
  --spacing-sm: 10px;
  --spacing-md: 15px;
  --spacing-lg: 24px;
  --spacing-xl: 30px;
  --spacing-xxl: 40px;
  
  /* Schriftgrößen */
  --font-size-base: 1em;
  --font-size-lg: 1.2em;
  --font-size-xl: 1.25em;
  --font-size-2xl: 2.5em;
  --font-size-3xl: 3em;
  
  /* Breakpoints */
  --breakpoint-tablet: 840px;
  --breakpoint-desktop: 1124px;
  
  /* Animationen */
  --transition-fast: 0.1s linear;
  --transition-medium: 0.3s ease;
  --transition-slow: 0.5s ease-out;

  --drag-x: 0px;
  --drag-y: 0px;
}

/* =============================================== */
/* RESET & BASE STYLES                            */
/* =============================================== */

*,
*::before,
*::after {
  box-sizing: border-box;
}

body {
  background-color: var(--bg-primary);
  color: var(--text-primary);
  font-family: 'Helvetica', 'Arial', sans-serif;
  line-height: 1.2;
  margin: 0;
  padding: 0 var(--spacing-md);
  display: block;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

/* =============================================== */
/* UTILITY CLASSES                                */
/* =============================================== */

.content-spacer {
  height: 80px;
}

.highlight-white {
  color: var(--text-accent);
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* =============================================== */
/* NAVIGATION                                     */
/* =============================================== */

.sidebar {
  width: 100%;
  margin-bottom: var(--spacing-xxl);
  margin-top: 20px;
}

.sidebar ul {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  justify-content: flex-start;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
}

.sidebar li a {
  display: block;
  padding: var(--spacing-xs) var(--spacing-md);
  text-decoration: none;
  color: var(--text-secondary);
  font-weight: normal;
  transition: color var(--transition-medium), font-weight var(--transition-medium);
  border-radius: 4px;
}

.sidebar li a:hover,
.sidebar li a:focus {
   color: var(--text-primary);

}

/* Hover-Effekt nur auf Geräten mit präzisen Zeigegeräten */
@media (hover: hover) and (pointer: fine) {
  .sidebar li a:hover:not(.active) {
    color: rgba(255, 255, 255, 0.8);
  }
}

/* Aktiver Zustand hat Priorität */
.sidebar li a.active {
  color: var(--text-primary);
  font-weight: bold;
}

/* =============================================== */
/* BURGER MENU (MOBILE)                           */
/* =============================================== */
.burger-menu-button {
  display: none; /* Standardmäßig auf Desktop versteckt */
  position: absolute;
  top: 20px;
  right: 20px;
  z-index: 1001; /* Muss über dem Menü-Panel liegen */
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 10px;
}

.burger-icon {
  display: block;
  position: relative;
  width: 24px;
  height: 2px;
  background-color: var(--text-primary);
  transition: all 0.2s ease-in-out;
}

.burger-icon::before,
.burger-icon::after {
  content: '';
  position: absolute;
  left: 0;
  width: 100%;
  height: 2px;
  background-color: var(--text-primary);
  transition: all 0.2s ease-in-out;
}

.burger-icon,
.burger-icon::before,
.burger-icon::after {
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

.burger-icon::before {
  top: -8px;
}

.burger-icon::after {
  bottom: -8px;
}

/* --- Burger-Menü Styles für kleine Bildschirme --- */
@media (max-width: 1123px) {
  .sidebar {
    margin-bottom: 0; /* Entfernen den Abstand unter der Leiste */
  }

  .burger-menu-button {
    display: block; /* Auf Mobilgeräten anzeigen */
    position: fixed;
  }

  .sidebar ul {
    position: fixed;
    top: 0;
    right: 0;
    width: 250px;
    height: 100vh;
    background: var(--bg-primary);
    flex-direction: column;
    justify-content: flex-start;
    padding-top: 80px;
    align-items: center;
    gap: var(--spacing-lg);
    z-index: 1000;
    transform: translateX(100%);
    transition: transform var(--transition-medium);
    box-shadow: -5px 0 15px rgba(0,0,0,0.3);
  }

  .sidebar ul.is-open {
    transform: translateX(0);
  }
  
  /* Verhindert das Scrollen des Hintergrunds, wenn das Menü offen ist */
  body.menu-open {
      /* overflow: hidden; */
  }

  /* Transformation des Burger-Icons zu einem "X" */
  .burger-menu-button[aria-expanded="true"] .burger-icon {
    background-color: transparent; /* Mittlerer Strich verschwindet */
  }

  .burger-menu-button[aria-expanded="true"] .burger-icon::before {
    transform: translateY(8px) rotate(45deg);
  }

  .burger-menu-button[aria-expanded="true"] .burger-icon::after {
    transform: translateY(-8px) rotate(-45deg);
  }
}


/* =============================================== */
/* HEADER & INTRO                                 */
/* =============================================== */

#about {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-xl);
  align-items: start;
  margin: 0 auto 100px auto;
  max-width: 900px;
}

.intro-text h1 {
  font-size: var(--font-size-2xl);
  margin: 0 0 16px 0;
  font-weight: 600;
}

.intro-text p {
  font-size: 1.6em;
  line-height: 1.2;
  margin-bottom: var(--spacing-lg);
  font-weight: 300;
  color: var(--text-secondary);
}

.social-link {
  display: inline-flex;
  align-items: center;
  gap: 3px;
  color: var(--text-link);
  text-decoration: none;
  margin: 5px 10px 18px 0;
  font-weight: 500;
  transition: text-decoration var(--transition-medium);
}

.social-link:hover,
.social-link:focus {
  text-decoration: underline;
}

.social-link img {
  width: 24px;
  height: 24px;
  object-fit: contain;
}

/* =============================================== */
/* INTRO VISUALS & MASCOT                        */
/* =============================================== */

.intro-visuals {
  position: relative;
  margin: 0 auto;
}

.profile-picture {
  width: 100%;
  max-width: 250px;
  border-radius: 8px;
}

.mascot {
  display: flex;
  align-items: center;
  justify-content: center;
  margin-top: -10px;
  gap: var(--spacing-sm);
}

.mascot p,
.mascot2 p {
  transform: rotate(-12deg);
  font-size: var(--font-size-xl);
  text-align: center;
  margin: 0;
}

.mascot-name {
  font-weight: bold;
  font-size: var(--font-size-lg);
}

.mascot-image {
  width: 120px;
}

.mascot2 {
  position: relative;
  left: -250px;
  display: none;
  transition: opacity var(--transition-medium), visibility var(--transition-medium);
}

.mascot2.hidden {
  opacity: 0;
  visibility: hidden;
}

.mascot2-image {
  position: relative;
  width: 100px;
  left: 170px;
  top: -60px;
  transform: rotate(30deg);
}

/* =============================================== */
/* INTERACTION EXPLAINER                          */
/* =============================================== */

.interaction-explainer {
  display: flex;
  justify-content: center;
  align-items: center;
  margin: -60px 0 -13% 0;
  text-align: center;
  animation: jiggleCycle 3s ease-in-out infinite;
}

@keyframes jiggleCycle {
  0%, 20%, 100% { transform: rotate(0deg); }
  5% { transform: rotate(-5deg); }
  10% { transform: rotate(5deg); }
  15% { transform: rotate(-5deg); }
}

.interaction {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-lg);
}

.interaction p {
  font-size: var(--font-size-xl);
  color: var(--text-primary);
  font-weight: 300;
  margin: 0;
}

.arrow {
  width: 100px;
  height: auto;
  margin-top: -30px;
}



/* =============================================== */
/* VIDEO OVERLAY */
/* =============================================== */
#video-overlay {
    display: none;
    position: fixed;
    top: 0; 
    left: 0;
    width: 100%; 
    height: 100%;
    background: rgba(0,0,0,0.85);
    justify-content: center;
    align-items: center;
    z-index: 1000;
}

#video-overlay.active {
    display: flex;
}

/* Wrapper passt sich dynamisch an die Videogröße an */
.video-wrapper {
    position: relative;
    display: inline-block; 
}

#overlay-video {
    max-width: 90vw;
    max-height: 90vh;
    border-radius: 12px;
    object-fit: contain; 
}

#close-overlay {
    position: absolute;
    top: -35px;
    right: 0px;
    font-size: 2rem;
    background: none;
    border: none;
    color: white;
    cursor: pointer;
    border-radius: 50%;
    transition: background-color 0.2s;
}

#close-overlay:hover {
    background-color: rgba(255,255,255,0.2);
}


/* =============================================== */
/* PROJECT GALLERIES                              */
/* =============================================== */

.projekt {
  margin-top: 50px;
}

.projekt-galerie {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--spacing-sm);
  margin-top: 10px;
}

.projekt-galerie2 {
  display: grid;
  grid-template-columns: 1.1443fr 1fr;
  gap: 0;
}

.projekt-galerie3 {
  display: grid;
  grid-template-columns: 1.55fr 2fr; 
  gap: 10px;
}


.left {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.logo-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--spacing-sm);
}

.ui-beispiele img {
  margin-bottom: var(--spacing-sm);
}

/* =============================================== */
/* BISCHNABLU MASCOT                              */
/* =============================================== */

.bischnablu {
  display: none;
  z-index: 100;
}

.bischnablu-grafik {
  left: 10%;
  display: none;
}

.bischnablu-body {
  position: absolute;
  width: 54%;
  top: 8px;
  left: 5px;
}

.bischnablu-head-container {
  position: absolute;
  width: 50%;
  top: 10px;
  left: 10px;
  transition: transform var(--transition-fast);
}

/* In style.css */
.bischnablu-container {
  transform: 
    translate(var(--drag-x, 0px), calc(var(--drag-y, 0px) - 155px)) 
    rotateZ(var(--drag-rotate-z, 0deg));
}

.bischnablu-head {
  width: 100%;
}

.bischnablu-eye {
  position: absolute;
  width: 6px;
  height: 6px;
  background-color: white;
  border-radius: 50%;
  transition: transform 0.05s linear;
}

.eye-left {
  top: 50px;
  left: 32px;
}

.eye-right {
  top: 50px;
  left: 62px;
}

.bischnablu-bubble {
  position: absolute;
  background: var(--bubble-bg);
  color: var(--text-primary);
  padding: var(--spacing-md);
  border-radius: 10px;
  width: 180px;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.2);
  text-align: center;
  border: 1px solid var(--bubble-border);
  bottom: 150px;
  left: -50px;
  z-index: 5;
  visibility: hidden;
}

.bischnablu-bubble::before {
  content: '';
  position: absolute;
  z-index: -1;
  width: 44px;
  height: 23px;
  bottom: -15px;
  left: 30%;
  transform: translateX(-50%);
  background-image: url("data:image/svg+xml,%3Csvg width='44' height='23' viewBox='0 0 44 23' fill='none' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M25.2683 0.906543C27.315 -0.0570641 32.6433 0.944083 33.7683 2.90668L43.2683 18.9075C44.0456 21.6118 42.0576 22.87 38.886 21.871L3.76827 8.40673C0.596635 7.40774 -0.183362 7.55474 1.8633 6.59113L25.2683 0.906543Z' fill='rgb(100, 138, 107)'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
}

.bubble-text span {
  opacity: 0;
  animation: fadeInLetter 0.2s forwards;
}

@keyframes fadeInLetter {
  from { 
    opacity: 0; 
    transform: scale(2); 
    filter: blur(5px); 
  }
  to { 
    opacity: 1; 
    transform: scale(1); 
    filter: blur(0); 
  }
}

.svg-foreground {
  position: absolute;
  width: 44px;
  height: 23px;
  bottom: -14px;
  left: 30%;
  transform: translateX(-50%);
}

.svg-foreground path {
  fill: var(--bubble-bg);
}

/* =============================================== */
/* SPECIAL EFFECTS                               */
/* =============================================== */

.gradient-text-hover {
  background: radial-gradient(
    circle at center,
    #ffffff 20%,
    #919191 50%,
    #ffffff 80%
  );
  background-size: 400% 400%;
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  -webkit-text-fill-color: transparent;
  transition: background-position var(--transition-slow);
}

.card {
 
  perspective: 1000px; /* 3D-Effekt */
}

.card-inner {
  position: relative;
  width: 100%;
  height: 100%;
  transition: transform 0.6s;
  transform-style: preserve-3d;
}

.card:hover .card-inner {
  transform: rotateY(180deg);
}

.card-front,
.card-back {
  position: absolute;
  width: 100%;
  height: 100%;
  backface-visibility: hidden; /* verhindert, dass man die andere Seite durchscheinen sieht */
}

.card-back {
  transform: rotateY(180deg);
}

#claw article {
  margin-top: 10px;
}

/* =============================================== */
/* RESPONSIVE DESIGN - TABLET                     */
/* =============================================== */

@media (min-width: 840px) {
  body {
    display: grid;
    grid-template-columns: 10px minmax(600px, 1fr) 200px 0.4fr;
    column-gap: var(--spacing-xxl);
    padding: 0;
  }

  .content {
    grid-column: 2;
  }

  #about {
    margin-top: -120px;
  }

  .intro-text p {
    font-size: 1.7em;
  }

  .interaction-explainer{
    margin-top: -150px;
  }


  .bischnablu {
    display: block;
    grid-column: 3;
    position: sticky;
    top: 450px;
    align-self: start;
    transform: translateX(10%);
  }

  .sidebar {
    grid-column: 1 / -1;
    padding: 0 var(--spacing-md);
    position: static;
  }

   .sidebar ul {
    display: flex;
    justify-content: flex-start;
    padding-top: 80px;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
  }

  .mascot {
    visibility: hidden;
  }

  .mascot2 {
    opacity: 1;
    visibility: visible;
    display: inline;
  }
}

/* =============================================== */
/* RESPONSIVE DESIGN - DESKTOP                    */
/* =============================================== */

@media (min-width: 1124px) {
  body {
    grid-template-columns: 0.4fr 200px minmax(600px, 1fr) 200px 0.4fr;
  }

  .sidebar {
    grid-column: 2;
    position: sticky;
    top: 100px;
    align-self: start;
    margin-bottom: 0;
  }


  .sidebar ul {
    display: block;
  }

  .content {
    grid-column: 3;
    max-width: 800px;
  }

  .bischnablu {
    grid-column: 4;
  }


  #about {
    grid-template-columns: 1.5fr 1fr;
    margin-top: -200px;
  }

  .intro-text h1 {
    font-size: var(--font-size-3xl);
  }

  

  .projekt-galerie {
    grid-template-columns: repeat(2, 1fr);
  }

  .logo-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .interaction-explainer {
    margin-top: -50px;
  }
}

/* =============================================== */
/* ACCESSIBILITY & PRINT STYLES                  */
/* =============================================== */



@media print {
  .sidebar,
  .bischnablu,
  .interaction-explainer {
    display: none;
  }

  body {
    background: white;
    color: black;
    display: block;
    padding: 1cm;
  }
}