/* ------------------- CSS Variables & Reset ------------------- */
:root {
    --primary-green: #3cae71;
    --bg-black: #050505;
    --text-white: #ffffff;
    --text-gray: #c6c6c6;
    --card-border: #349b64;
}

body {
    overflow-x: hidden;
}

/* ------------------- Main Content ------------------- */
main { padding-top: 120px; padding-bottom: 60px; }

.page-title {
    text-align: center;
    margin-bottom: 80px;
    opacity: 0;
    animation: fadeInDown 1s forwards;
}
.page-title h2 {
    font-size: 2.5rem;
    color: var(--primary-green);
    display: inline-block;
    border-bottom: 2px solid var(--primary-green);
    padding-bottom: 10px;
}

/* Research Items Layout */
.research-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    flex-direction: column;
    gap: 100px;
}

.research-item {
    display: flex;
    align-items: flex-start; /* Align top */
    gap: 50px;
    opacity: 0;
    transform: translateY(50px);
    transition: all 0.8s ease-out;
    padding-bottom: 40px;
    border-bottom: 1px solid #1a1a1a;
}

.research-item:last-child { border-bottom: none; }

.research-item.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Alternating Layout */
.research-item:nth-child(even) {
    flex-direction: row-reverse;
}

/* FIXED: Image Box Logic */
.research-img-box {
    flex: 1;
    /* Removed fixed height/min-height constraints to allow natural aspect ratio */
    width: 100%; 
    border-radius: 8px;
    overflow: hidden;
    /* background: #fff; Optional: White bg if transparency looks bad on black */
    box-shadow: 0 5px 20px rgba(0,0,0,0.5);
    border: 1px solid #333;
}

.research-img-box img {
    width: 100%;
    height: auto; /* Maintain aspect ratio */
    display: block;
    object-fit: contain; /* Ensure full image is seen */
}

.research-content {
    flex: 1;
    padding-top: 10px;
}

.research-content h3 {
    font-size: 2rem;
    margin-bottom: 20px;
    color: var(--text-white);
    position: relative;
}

.research-content h3::before {
    content: '';
    position: absolute;
    left: -20px;
    top: 50%;
    transform: translateY(-50%);
    width: 4px;
    height: 70%;
    background: var(--primary-green);
}

.research-content p {
    font-size: 1.1rem;
    color: var(--text-gray);
    line-height: 1.8;
    text-align: justify;
}

@media (max-width: 900px) {
    .research-item, .research-item:nth-child(even) { flex-direction: column; gap: 20px; }
}

@keyframes fadeInDown { from { opacity: 0; transform: translateY(-20px); } to { opacity: 1; transform: translateY(0); } }