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

html.lock-scroll{
    overflow: hidden;
    height: 100%;
}


body {
    margin: 0;
    background: radial-gradient(circle at center, #101820, #05080d);
    font-family: 'Segoe UI', Arial, sans-serif;
    overflow-x:hidden;
}



svg {
    width: 100vw;
    height: auto;
}
/* TEXT */
text {
    font-size: 52px;
    text-anchor: middle;
    opacity: 0;
    fill: #ffffff;
}

#datentechnik {
    animation: textActivateSM 0.7s ease-out forwards;
    animation-delay: 2.4s; /* nach SM-Kabel + Glow */
}

#klesel {
    animation: textActivateMM 0.7s ease-out forwards;
    animation-delay: 3.3s; /* nach MM-Kabel + Glow */
}

/* KABEL BASIS */
line {
    stroke-width: 5;
    stroke-linecap: round;
    stroke-dasharray: 700;
    stroke-dashoffset: 700;
}

#fiber-sm {
    stroke: url(#smGradient);
    filter: drop-shadow(0 0 10px #ffb300);
    animation:
        cableIn 1.4s ease-out forwards,
        cableOut 0.4s ease-out forwards;
    animation-delay:
        0.4s,
        2.6s; /* NACH Text-Einblendung */
}

#fiber-mm {
    stroke: url(#mmGradient);
    filter: drop-shadow(0 0 10px #00e5ff);
    animation:
        cableIn 1.4s ease-out forwards,
        cableOut 0.4s ease-out forwards;
    animation-delay:
        1.3s,
        3.5s; /* NACH Text-Einblendung */
}


/* ANIMATIONEN */
@keyframes cableIn {
    to {
        stroke-dashoffset: 0;
    }
}
@keyframes cableOut {
    to {
        opacity: 0;
    }
}

/* Glow Flash beim Andocken */
@keyframes glowFlashSM {
    0% { filter: drop-shadow(0 0 10px #ffb300); }
    50% { filter: drop-shadow(0 0 30px #fff176); }
    100% { filter: drop-shadow(0 0 10px #ffb300); }
}

@keyframes glowFlashMM {
    0% { filter: drop-shadow(0 0 10px #00e5ff); }
    50% { filter: drop-shadow(0 0 35px #7c4dff); }
    100% { filter: drop-shadow(0 0 10px #00e5ff); }
}

/* Text-Aktivierung */
@keyframes textActivateSM {
    from {
        opacity: 0;
        filter: drop-shadow(0 0 0px #ffb300);
    }
    to {
        opacity: 1;
        filter: drop-shadow(0 0 20px #ffb300);
    }
}

@keyframes textActivateMM {
    from {
        opacity: 0;
        filter: drop-shadow(0 0 0px #00e5ff);
    }
    to {
        opacity: 1;
        filter: drop-shadow(0 0 22px #7c4dff);
    }
}
.intro {
    position: absolute;
    inset: 0;
    display: flex;
    justify-content: center;
    align-items: center;
    animation: introFadeOut 0.6s ease forwards;
    animation-delay: 4.2s; /* NACH Text-Einblendung */
}

#datentechnik {
    animation:
        textActivateSM 0.7s ease-out forwards,
        slideRight 1.4s ease-in forwards;
    animation-delay:
        2.4s,
        4.2s;
}

#klesel {
    animation:
        textActivateMM 0.7s ease-out forwards,
        slideLeft 1.4s ease-in forwards;
    animation-delay:
        3.3s,
        4.4s;
}
@keyframes slideLeft {
    to {
        transform: translateX(-120vw);
        opacity: 0;
    }
}

@keyframes slideRight {
    to {
        transform: translateX(120vw);
        opacity: 0;
    }
}
@keyframes introFadeOut {
    to {
        opacity: 0;
        visibility: hidden;
    }
}



/*============================================================================*/


/* Hamburger Button */

.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
    gap: 6px;
}

.hamburger span {
    width: 30px;
    height: 3px;
    background: white;
    transition: 0.3s;
}

.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    padding: 20px 20px;
    background: rgba(5, 8, 13, 0.85);
    backdrop-filter: blur(8px);
    z-index: 5;
    box-sizing: border-box;
    opacity: 0;
    transform: translateY(-100%);
    animation: headerFadeIn 0.8s ease-out forwards;
    animation-delay: 5.2s;
}

header nav {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.header-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    overflow: visible;
}
.header .logo {
    height: clamp(1rem, 10vw, 7rem);
    width: auto;  
    display: block;
}

/* Buttons */
header nav a {
    display: inline-block;
    padding: 1rem 2rem;
    background-color: #0a1f44;
    color: #ffffff;
    text-decoration: none;
    border-radius: 8px;
    font-weight: 500;
    letter-spacing: 0.5px;
    border: 1px solid #1f4fff;
    transition: all 0.3s ease;
    font-size: clamp(1rem, 1vw, 5rem);
    font-weight: bold;
}

/* Hover */
header nav a:hover {
    background-color: #8b0000;
    border: 1px solid #ff1a1a;
    transform: translateY(-3px);
}



@keyframes headerFadeIn {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Dropdown Container */
.dropdown {
  position: relative;
  display: inline-block;

}

/* Dropdown Inhalt (untergeordnete Links) */
.dropdown-content {
  display: none; /* unsichtbar standardmäßig */
  position: absolute;
  top: 100%; /* direkt unter dem Hauptlink */
  left: 0;
  background-color: #0a1f44;
  min-width: 200px;
  box-shadow: 0 8px 16px rgba(0,0,0,0.3);
  border-radius: 8px;
  z-index: 10;
  flex-direction: column;
}

/* Dropdown Links */
.dropdown-content a {
  display: block;
  padding: 1rem 1.5rem;
  color: white;
  text-decoration: none;
  border-bottom: 1px solid rgba(255,255,255,0.1);
  transition: background 0.3s;
  font-size: clamp(1rem, 1vw, 5rem);
}
@media (hover: hover) and (pointer: fine) {

/* Hover auf Dropdown Links */
.dropdown-content a:hover {
    background-color: #8b0000;
    border: 1px solid #ff1a1a;
}

/* Zeigen, wenn hover auf Container */
.dropdown:hover .dropdown-content {
  display: flex; /* sichtbar */
  flex-direction: column;
}
}
/* Optional: kleiner Pfeil beim Hauptlink */
.dropdown > a {
  display: inline-block;
  position: relative;
}


.hero {
    opacity: 0;
    transform: translateY(20px);
    animation: heroFadeIn 1s ease-out forwards;
    animation-delay: 5.2s;
    padding: 120px 80px;
    color: white;
}

@keyframes heroFadeIn {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}


.hero h1 {
    font-size: clamp(1rem, 4vw, 5rem);
    margin-bottom: 20px;
    text-align: center;
}

.hero p {
    font-size: clamp(1rem, 2vw, 5rem);
    opacity: 0.85;
    text-align: center;
}


.hero button {
    margin-top: 30px;
    padding: 14px 28px;
    font-size: clamp(1rem, 1vw, 5rem);
    background: linear-gradient(90deg, #00e5ff, #7c4dff);
    border: none;
    color: black;
    cursor: pointer;
}


@keyframes cardsFadeIn {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}


main {
  padding: 60px 20px;
}

.main-section {
  text-align: center;
  color: #fff;
}
.card-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem; /* Abstand zwischen den Karten */
  max-width: 1200px;
  margin: 1rem auto 0;
}

.card {
  perspective: 1000px;
  min-height: 320px;
  opacity: 0;
  transform: translateY(20px);
  animation: cardsFadeIn 0.9s ease-out forwards;
  animation-delay: 5.2s;
}

.card-inner {
  position: relative;
  width: 100%;
  height: 100%;
  height: 320px;
  transition: transform 0.6s ease;
  transform-style: preserve-3d;
}

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


.card-front,
.card-back {
  position: absolute;
  inset: 0;                     /* füllt immer exakt die gleiche Größe */
  backface-visibility: hidden;
  border-radius: 15px;
  overflow: hidden;
  background: radial-gradient(circle at center, #05080d, #05080d);
  border: 2px solid #1f4fff;
}

.card-front {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  padding: 15px;
}

.card-front img {
  width: 100%;
  height: 10rem;
  object-fit: contain;
  background: #05080d;
}

.card-front h3 {
  margin: 1rem 0 0;
  font-size: 1rem;
  text-shadow: 0 0 10px rgba(0,229,255,0.8);
}

.card-back {
  transform: rotateY(180deg);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  text-align: center;
  color: #fff;
}

/* Link-Container */
.more-link {
  display: inline-flex;
  align-items: center;
  gap: 10px;

  text-decoration: none;
  color: #fff;

  position: absolute;
  bottom: 20px;
  right: 20px;

  /* Damit nur Pfeil sichtbar ist */
  overflow: hidden;
}


/* Text ist anfangs aus dem Bild (nach rechts geschoben) */
.text {
  display: inline-block;
  transform: translateX(-100%);
  opacity: 0;
  transition: transform 0.4s ease, opacity 0.4s ease;
}

/* Hover auf den Link (Pfeil + Text erscheinen) */
.more-link:hover .arrow {
  transform: translateX(300px); /* Pfeil fährt nach rechts */
}

.more-link:hover .text {
  transform: translateX(0);   /* Text kommt ins Bild */
  color: #1f4fff;
  opacity: 1;
}


.card-back p {
  font-size: clamp(1rem, 1vw, 5rem);
  line-height: 1.4;
  text-shadow: 0 0 10px rgba(0,229,255,0.6);
}

/* Hover: Neon Rot */
.card:hover .card-front,
.card:hover .card-back {
  border-color: #ff1a1a;
  box-shadow:
    0 0 20px rgba(255, 26, 26, 0.7),
    0 0 60px rgba(255, 26, 26, 0.35),
    0 15px 35px rgba(0,0,0,0.6);
}


.fiber-box{

  position:fixed;
  right:3vw;
  bottom:10vh;
  z-index: 999;
  width:min(90vw, 360px);

  padding:1.5rem;

  background:rgba(10,15,25,0.92);
  border-radius:12px;

  color:white;
  overflow:hidden;

  transform:translateX(120%);
  opacity:0;
  animation:slideIn 0.8s forwards 1s;
  animation-delay: 6.5s;
}

/* Slide Animation */

@keyframes slideIn{
  to{
    transform:translateX(0);
    opacity:1;
  }
}

/* SVG Border */

.fiber-border{
  position:absolute;
  inset:0;
  width:100%;
  height:100%;
  pointer-events:none;
  transform:scaleX(-1);
}

.fiber-border rect{

  fill:none;
  stroke:#00c3ff;
  stroke-width:1.5;

  stroke-dasharray:400;
  stroke-dashoffset:400;

  filter:drop-shadow(0 0 6px #00c3ff);

  animation:borderTrace 2.4s linear forwards 1.2s;
  animation-delay: 7s;
}

@keyframes borderTrace{
  to{
    stroke-dashoffset:0;
  }
}

/* Inhalt erscheint danach */

.fiber-content{

  opacity:0;
  transform:translateY(10px);

  animation:contentFade 0.8s forwards 2.6s;
  animation-delay: 7s;
}

@keyframes contentFade{
  to{
    opacity:1;
    transform:translateY(0);
  }
}

/* Button */

.fiber-btn{

  display:inline-block;
  margin-top:0.8rem;

  padding:0.5rem 1rem;

  border:1px solid #00c3ff;
  border-radius:6px;

  text-decoration:none;
  color:white;

  transition:0.25s;
}

.fiber-btn:hover{
  background:#00c3ff;
}

/* Close Button */

.fiber-close{

  position:absolute;
  top:0.6rem;
  right:0.7rem;

  background:none;
  border:none;

  color:#aaa;
  font-size:1rem;
  cursor:pointer;
}

.fiber-close:hover{
  color:white;
}


@keyframes borderTrace{
  to{
    stroke-dashoffset:0;
  }
}


/* Mobile */

@media (max-width:700px){

  .fiber-box{
    right:4vw;
    left:4vw;
    bottom:5vh;
    width:auto;
  }

}

.fiber-box.closing .fiber-border rect{
  animation:borderTrace 1.8s linear reverse forwards;
}

/* Content ausblenden */

.fiber-box.closing .fiber-content{
  animation:contentFadeReverse 0.4s forwards;
}

@keyframes contentFadeReverse{
  from{
    opacity:1;
    transform:translateY(0);
  }
  to{
    opacity:0;
    transform:translateY(10px);
  }
} 


.site-footer {
  background-color: #0b0f1a; /* dunkler Hintergrund */
  color: #ffffff;            /* weiße Schrift */
  padding: 30px 20px;
  text-align: center;
  font-family: Arial, sans-serif;

  /* Startzustand für Einflug */
  opacity: 0;
  transform: translateY(100px);

  /* Einflug Animation */
  animation: footerSlideIn 1s ease-out forwards;
}

.site-footer .footer-content {
  max-width: 1200px;
  margin: auto;
}

.site-footer .footer-logo {
  font-size: 1.2rem;
  margin-bottom: 15px;
  font-weight: bold;
}

.site-footer .footer-links a {
  color: #ffffff;
  text-decoration: none;
  margin: 0 10px;
  transition: color 0.3s;
}

.site-footer .footer-links a:hover {
  color: #f03c3c; /* optional: roter Hover-Effekt */
}

.site-footer .footer-copy {
  margin-top: 15px;
  font-size: 0.9rem;
  color: #bbbbbb;
}

/* Animation von unten nach oben */
@keyframes footerSlideIn {
  from {
    opacity: 0;
    transform: translateY(100px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}


@media (max-width: 900px){

.hamburger{
display:flex;
}

.hamburger.active span:nth-child(1) {
  transform: translateY(8px) rotate(45deg);
}

.hamburger.active span:nth-child(2) {
  opacity: 0;
}

.hamburger.active span:nth-child(3) {
  transform: translateY(-8px) rotate(-45deg);
}


header nav{
position: absolute;
top: 100%;
left: 0;
width: 100%;
background: rgba(5,8,13,0.95);
flex-direction: column;
align-items: stretch;

max-height: 0;
overflow: hidden;
transition: max-height 0.4s ease;
}

header nav a{
width:100%;
text-align:center;
}

header nav.open{
max-height: 600px;
}

.dropdown-content {
  display: none;
  position: static;
  flex-direction: column;
}

.dropdown.open .dropdown-content {
  display: flex;
}


.card-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}
.card:nth-child(even) {
  transform: translateY(40px);
}

.header .logo {
    height: clamp(1rem, 18vw, 7rem);
    width: auto;  
    display: block;
}

.hero {
display: flex;
flex-direction: column;
justify-content: center;
align-items: center;
text-align: center;

padding-top: clamp(1rem, 20vw, 5rem);
color: white;

opacity: 0;
transform: translateY(20px);
animation: heroFadeIn 1s ease-out forwards;
animation-delay: 5.2s;
}

.hero h1 {
    font-size: clamp(1rem, 12vw, 5rem);
    margin-bottom: 20px;
    text-align: center;
}

.hero p {
    font-size: clamp(1rem, 6vw, 5rem);
    opacity: 0.85;
    text-align: center;
}

text {
    font-size: clamp(1rem, 50vw, 5rem);
    text-anchor: middle;
    opacity: 0;
    fill: #ffffff;

  }

.card {
  perspective: 1000px;
}

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

/* Flip bei Klick */
.card.active .card-inner {
  transform: rotateY(180deg);
}
.card-front,
.card-back {
  position: absolute;
  inset: 0;

  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;

  backface-visibility: hidden;
  border-radius: 12px;
}

/* Rückseite drehen */
.card-back {
  transform: rotateY(180deg);
}
.card {
  transition: transform 0.15s ease, box-shadow 0.2s ease;
  cursor: pointer;
}

/* Finger drückt drauf */
.card:active {
  transform: scale(0.96);
}
.card-front h2 {
  font-size: clamp(1rem, 5vw, 6rem);
}
}