/* About PDRN Section */
.about-pdrn-section {
    padding: 8rem 0;
    background: var(--bg-dark);
    position: relative;
    overflow: hidden;
}

.about-pdrn-grid {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 6rem;
    align-items: center;
}

.about-pdrn-content {
    display: flex;
    flex-direction: column;
    gap: 3rem;
}

.about-block {
    opacity: 0;
    transform: translateX(-50px);
}

.about-title {
    font-size: 3.5rem;
    font-weight: 900;
    line-height: 1.2;
    color: #000000;
    margin-bottom: 1.5rem;
    letter-spacing: -2px;
}

body.dark-mode .about-title {
    color: #ffffff;
}

.about-text {
    font-size: 1.1rem;
    line-height: 1.8;
    color: #333333;
    max-width: 600px;
}

body.dark-mode .about-text {
    color: #cccccc;
}

.about-text strong {
    color: #000000;
    font-weight: 700;
}

body.dark-mode .about-text strong {
    color: #ffffff;
}

.mt-5 {
    margin-top: 3rem;
}

/* Molecule Visual */
.about-pdrn-visual {
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
}

.molecule-container {
    position: relative;
    width: 500px;
    height: 500px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.molecule-glow {
    position: absolute;
    width: 300px;
    height: 300px;
    background: radial-gradient(circle, rgba(151, 153, 155, 0.3), transparent 70%);
    border-radius: 50%;
    filter: blur(40px);
    animation: pulse-glow 4s ease-in-out infinite;
}

@keyframes pulse-glow {

    0%,
    100% {
        transform: scale(1);
        opacity: 0.3;
    }

    50% {
        transform: scale(1.2);
        opacity: 0.5;
    }
}

.molecule-image {
    width: 350px;
    height: auto;
    position: relative;
    z-index: 2;
    filter: drop-shadow(0 20px 40px rgba(0, 0, 0, 0.15));
    animation: float-molecule 6s ease-in-out infinite;
}

@keyframes float-molecule {

    0%,
    100% {
        transform: translateY(0px) rotate(0deg);
    }

    50% {
        transform: translateY(-20px) rotate(5deg);
    }
}

.molecule-orbit {
    position: absolute;
    border: 2px dashed rgba(151, 153, 155, 0.2);
    border-radius: 50%;
    animation: rotate-orbit 20s linear infinite;
}

.orbit-1 {
    width: 100%;
    height: 100%;
}

.orbit-2 {
    width: 80%;
    height: 80%;
    animation-duration: 15s;
    animation-direction: reverse;
}

.orbit-3 {
    width: 60%;
    height: 60%;
    animation-duration: 10s;
}

@keyframes rotate-orbit {
    from {
        transform: rotate(0deg);
    }

    to {
        transform: rotate(360deg);
    }
}

/* Responsive */
@media (max-width: 992px) {
    .about-pdrn-grid {
        grid-template-columns: 1fr;
        gap: 4rem;
    }

    .about-title {
        font-size: 2.5rem;
    }

    .molecule-container {
        width: 350px;
        height: 350px;
    }

    .molecule-image {
        width: 250px;
    }
}