@import url('https://fonts.googleapis.com/css?family=Orbitron:700&display=swap');
body {
    background: #101325 radial-gradient(circle at 50% 50%, #101325 60%, #111 100%);
    font-family: 'Orbitron', Arial, sans-serif;
    color: #fff;
    margin: 0; padding: 0;
    min-height: 100vh;
    box-sizing: border-box;
    overflow-x: hidden;
}
header {
    text-align: center;
    padding: 32px 10px 16px 10px;
}
main {
    max-width: 950px;
    margin: 0 auto;
    padding: 0 16px 30px 16px;
}
footer {
    text-align: center;
    padding: 18px 10px 20px 10px;
    background: rgba(10,15,22,0.5);
    font-size: 1.05em;
    letter-spacing: 1px;
    border-top: 1px solid #2dffe5;
    margin-top: 45px;
}
.neon-glow {
    color: #00ffd0;
    text-shadow:
      0 0 10px #00fff7,
      0 0 20px #1cf9ea,
      0 0 40px #00fff7;
    letter-spacing: 2px;
}
#button-bar {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    justify-content: center;
    margin-bottom: 30px;
    margin-top: 10px;
}
.neon-btn {
    background: transparent;
    border: 2.5px solid #0ff;
    color: #fff;
    padding: 12px 28px;
    font-size: 1.08em;
    letter-spacing: 1px;
    border-radius: 50px;
    font-family: 'Orbitron', Arial, sans-serif;
    cursor: pointer;
    box-shadow: 0 0 20px #09f2ff77, 0 0 6px #1cf9ea77;
    position: relative;
    transition: all 0.18s cubic-bezier(.25,.8,.25,1);
    overflow: hidden;
    outline: none;
}
.neon-btn:hover, .neon-btn.active {
    background: #04f1c57d;
    color: #111;
    border-color: #fff;
    box-shadow: 0 0 28px #19ffd6, 0 0 12px #00ffc999;
    transform: scale(1.08) rotate(-1deg);
    transition: 0.14s;
}
#iframes {
    display: flex;
    flex-direction: column;
    gap: 40px;
}
.iframe-container {
    position: relative;
    border-radius: 30px;
    overflow: hidden;
    background: rgba(10,26,24,0.9);
    box-shadow:
      0 0 50px #00ffd099,
      0 0 12px #101,
      0 4px 60px #00fff766;
    margin-bottom: 12px;
    border: 2px solid #00ffc7;
    transition: box-shadow 0.18s;
}
.iframe-container.active {
    box-shadow: 0 0 60px #fffad4, 0 0 22px #02ffe0cc;
    border-color: #fffad4;
}
.iframe-title {
    background: rgba(15, 255, 207, 0.8);
    color: #111;
    font-weight: 700;
    letter-spacing: 1px;
    font-size: 1.02em;
    padding: 10px 18px;
    border-bottom: 1.5px solid #00ffd9;
    border-radius: 30px 30px 0 0;
    box-shadow: 0 0 6px #00ffd6cc;
    position: relative;
    z-index: 2;
}
iframe {
    width: 100%;
    min-height: 390px;
    height: 40vh;
    border: none;
    background: #222;
    border-radius: 0 0 30px 30px;
    display: block;
    z-index: 1;
}
.iframe-overlay {
    position: absolute;
    top: 42px; /* Höhe des Titels beachten! */
    left: 0;
    width: 100%;
    height: calc(100% - 42px);
    cursor: pointer;
    z-index: 3;
    background: rgba(0,255,230,0.07);
    transition: background 0.2s;
}
.iframe-overlay:hover {
    background: rgba(0,255,255,0.18);
}
.iframe-hint {
    position: absolute;
    left: 50%; bottom: 18px;
    transform: translateX(-50%);
    background: rgba(0,255,255,0.16);
    color: #0ff;
    font-size: 1.01em;
    padding: 6px 19px 6px 14px;
    border-radius: 23px;
    pointer-events: none;
    z-index: 6;
    opacity: 0;
    transition: opacity 0.18s;
    font-family: 'Orbitron', Arial, sans-serif;
    text-shadow: 0 0 9px #00fff9cc;
    letter-spacing: 1px;
    font-weight: bold;
}
.iframe-overlay:hover ~ .iframe-hint {
    opacity: 1;
}
@media (max-width: 800px) {
    iframe { min-height: 280px; height: 35vh;}
    .iframe-title { font-size: 1em;}
    .iframe-overlay { top: 38px; height: calc(100% - 38px);}
}
@media (max-width: 540px) {
    .iframe-container { border-radius: 17px; }
    .iframe-title { padding: 8px 10px; border-radius: 17px 17px 0 0; }
    iframe { border-radius: 0 0 17px 17px; }
}
::-webkit-scrollbar {
    width: 10px;
    background: #1a1f24;
}
::-webkit-scrollbar-thumb {
    background: #00ffe7;
    border-radius: 8px;
    box-shadow: 0 0 10px #00ffd1cc;
}