.demo-led-title {
    color: #00eaff;
    font-weight: 700;
    text-align: center;
    margin-bottom: 30px;
    font-size: 2em;
    letter-spacing: .5px;
}

.demo-led-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(245px, 1fr));
    gap: 36px;
    justify-items: center;
    margin-bottom: 34px;
}
.demo-led-card {
    width: 245px;
    height: 275px;
    border-radius: 18px;
    position: relative;
    overflow: hidden;
    box-shadow: 0 0 18px #00eaff55, 0 0 0 2.5px #00eaff inset;
    background: #070e1c;
    cursor: pointer;
    transition: transform .23s cubic-bezier(.5,1.5,.7,1.1);
    animation: demoLedFloat 3.6s infinite ease-in-out;
}
@keyframes demoLedFloat {
    0% { transform: translateY(0px) scale(1);}
    42% { transform: translateY(-13px) scale(1.035);}
    65% { transform: translateY(6px) scale(1);}
    100% { transform: translateY(0px) scale(1);}
}
.demo-led-bg {
    position: absolute;
    inset: 0;
    background-size: cover;
    background-position: center;
    z-index: 1;
    filter: brightness(0.88) blur(1px);
    transition: filter .22s;
}
.demo-led-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg,#141e36e8 40%,#05394e 100%);
    z-index: 2;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    transition: background .21s;
    cursor: pointer;
}
.demo-led-icon img {
    width: 48px; height: 48px; margin-bottom:14px;
    filter: drop-shadow(0 3px 6px #00eaff66);
}
.demo-led-sector {
    color: #00eaff;
    font-size: 1.17em;
    font-weight: 700;
    letter-spacing: .5px;
    text-align: center;
    margin-bottom: 10px;
    text-shadow: 0 3px 14px #0008;
}
.demo-led-btn {
    opacity: 0;
    background: #00eaff;
    color: #172138;
    border: none;
    border-radius: 8px;
    padding: 9px 22px;
    font-weight: 700;
    margin-top: 10px;
    font-size: 1.04em;
    cursor: pointer;
    transition: opacity .2s, background .17s;
    box-shadow: 0 2px 16px #00eaff88;
}
.demo-led-card:hover .demo-led-bg,
.demo-led-card:focus .demo-led-bg {
    filter: brightness(0.69) blur(1.6px);
}
.demo-led-card:hover .demo-led-overlay,
.demo-led-card:focus .demo-led-overlay {
    background: linear-gradient(180deg,#050d18f7 40%,#01131d 100%);
}
.demo-led-card:hover .demo-led-btn,
.demo-led-card:focus .demo-led-btn {
    opacity: 1;
}
.demo-led-card:active {
    transform: scale(0.98);
}
#demo-led-activo {
    margin-top: 0;
    margin-bottom: 28px;
    border-radius: 18px;
    box-shadow: 0 0 18px #00eaff55;
    border: 2.5px solid #00eaff;
    background: #0a1526;
    overflow: hidden;
    animation: demoLedIn .6s cubic-bezier(.16,.9,.4,1.1);
}
@keyframes demoLedIn {
    0% { opacity:0; transform: scale(.94) translateY(30px);}
    80% { opacity:1; transform: scale(1.02);}
    100% { opacity:1; transform: scale(1);}
}
.demo-led-bar {
    background: #001a28;
    color: #00eaff;
    font-size: 1.11em;
    font-weight: 700;
    letter-spacing: .7px;
    padding: 14px 22px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-radius: 16px 16px 0 0;
}
.demo-led-bar #demo-led-cerrar {
    font-size: 1.9em;
    color: #00eaff;
    background: none;
    border: none;
    cursor: pointer;
    line-height: 1;
    font-weight: 700;
    margin-left: 15px;
    transition: color .17s;
}
.demo-led-bar #demo-led-cerrar:hover {
    color: #ff3b3b;
}
.demo-led-iframe-area {
    padding: 0;
    background: #141d2e;
    border-radius: 0 0 18px 18px;
    min-height: 330px;
}
@media (max-width: 680px) {
    .demo-led-grid { grid-template-columns: 1fr; gap:18px;}
    .demo-led-card { width: 100%; max-width:290px; }
}