body{
margin:0;
font-family:'Inter',sans-serif;
background:#f8fafc;
color:#0f172a;
}

.container{
width:90%;
max-width:1200px;
margin:auto;
}

.section{
padding:110px 0;
}

.light{
background:#f1f5f9;
}

.header{
position:fixed;
top:0;
width:100%;
background:white;
border-bottom:1px solid #e2e8f0;
z-index:1000;
}

.nav{
display:flex;
justify-content:space-between;
align-items:center;
padding:20px 0;
}

.logo{
font-weight:600;
letter-spacing:2px;
}

.menu a{
margin-left:30px;
text-decoration:none;
color:#334155;
}

.menu-toggle{
display:none;
font-size:24px;
cursor:pointer;
}



.hero{
height:90vh;
background-image:url("images/thymus-hero.jpg");
background-size:cover;
background-position:center;
background-repeat:no-repeat;
display:flex;
align-items:center;
color:white;
position:relative;
text-align:center;
}

.hero-overlay{
position:absolute;
top:0;
left:0;
width:100%;
height:100%;
background:rgba(0,0,0,0.35);

z-index:1;
pointer-events:none;
}

.hero-content{
position:relative;
z-index:2;
text-align:center;
max-width:900px;
margin:0 auto;

display:flex;
flex-direction:column;
align-items:center;
}

.hero h1{
font-size:54px;
line-height:1.1;
margin-bottom:20px;
}

.hero p{
font-size:20px;
color:#cbd5e1;
max-width:700px;
margin:auto;
}



.grid{
display:grid;
grid-template-columns:1fr 1fr;
gap:80px;
align-items:center;
}

.reverse{
direction:rtl;
}

.reverse .text{
direction:ltr;
}

.image{
height:360px;
background:#e2e8f0;
border-radius:16px;
}



.cards{
display:grid;
grid-template-columns:repeat(3,1fr);
gap:30px;
margin-top:40px;
}

.card{
background:white;
padding:30px;
border-radius:12px;
box-shadow:0 10px 30px rgba(0,0,0,0.05);
}



.contact{
text-align:center;
}

.disclaimer{
font-size:14px;
color:#64748b;
}



footer{
text-align:center;
padding:50px;
border-top:1px solid #e2e8f0;
color:#64748b;
}



/* MOBILE */

@media (max-width:768px){

.menu{
display:none;
position:absolute;
top:70px;
right:20px;
background:white;
flex-direction:column;
padding:20px;
border-radius:10px;
box-shadow:0 10px 30px rgba(0,0,0,0.2);
}

.menu.active{
display:flex;
}

.menu a{
margin:10px 0;
}

.menu-toggle{
display:block;
}

.grid{
grid-template-columns:1fr;
}

.cards{
grid-template-columns:1fr;
}

.hero h1{
font-size:34px;
}

}

.more-text{
max-height:0;
overflow:hidden;
transition:max-height 0.5s ease;
}

.text-block.open .more-text{
max-height:500px;
}

.read-more-btn{
margin-top:15px;
background:none;
border:1px solid #1e3a5f;
color:#1e3a5f;
padding:10px 20px;
cursor:pointer;
border-radius:6px;
font-size:14px;
transition:0.3s;
}

.read-more-btn:hover{
background:#1e3a5f;
color:white;
}

.research-section{
padding:100px 0;
}

.research-intro{
max-width:700px;
margin-top:20px;
margin-bottom:50px;
font-size:18px;
line-height:1.6;
color:#5a6a7a;
}

.research-timeline{
position:relative;
padding-left:40px;
}

.research-timeline::before{
content:"";
position:absolute;
left:10px;
top:0;
bottom:0;
width:2px;
background:#d8dee6;
}

.research-item{
display:flex;
align-items:flex-start;
margin-bottom:35px;
}

.research-number{
font-weight:600;
font-size:18px;
margin-right:20px;
color:#1e3a5f;
}

.research-content h3{
margin:0;
font-size:20px;
color:#0f172a;
}

.research-content p{
margin-top:5px;
font-size:16px;
color:#5a6a7a;
}

.partnership-timeline{
position:relative;
padding-left:40px;
margin-top:40px;
}

.partnership-timeline::before{
content:"";
position:absolute;
left:0;
top:0;
bottom:0;
width:2px;
background:#d8dee6;
}

.partnership-item{
position:relative;
margin-bottom:28px;
padding-left:20px;
}

.partnership-dot{
position:absolute;
left:0;
top:8px;
width:12px;
height:12px;
background:#1e3a5f;
border-radius:50%;
transform:translateX(-50%);
}

.partnership-item p{
margin:0;
font-size:18px;
font-weight:500;
color:#1f2937;
}

.about-video video{
width:100%;
height:100%;
object-fit:cover;
border-radius:12px;
}

.image.about-video{
position:relative;
}

#about-video{
width:100%;
border-radius:16px;
display:block;
}

.play-btn{
position:absolute;
top:50%;
left:50%;
transform:translate(-50%,-50%);
width:64px;
height:64px;
border-radius:50%;
background:rgba(11,28,53,0.75);
border:none;
cursor:pointer;
display:flex;
align-items:center;
justify-content:center;
}

.play-btn svg{
width:56px;
height:56px;
display:block;
}

.mission-cells{
background-image: url("images/mission-cells.jpg");
background-size: cover;
background-position: center;
background-repeat: no-repeat;
}

.science-img{
background-image:url("images/science-img.jpg");
background-size:cover;
background-position:center;
background-repeat:no-repeat;
}

.image video{
width:100%;
height:100%;
object-fit:cover;
border-radius:20px;
}

.thymus-diagram {
background-image: url("images/thymus-diagram.jpg");
background-size: cover;
background-position: center;
background-repeat: no-repeat;
}

.bioreactor-img{
background-image:url("images/bioreactor-img.jpg");
background-size:cover;
background-position:center;
background-repeat:no-repeat;
}

.hero-btn{
display:inline-block;
margin-top:36px;
padding:14px 42px;

background:rgba(59,130,246,0.18);
border:1px solid rgba(59,130,246,0.45);

color:white;
font-size:16px;
font-weight:500;

border-radius:12px;

text-decoration:none;

backdrop-filter:blur(6px);

transition:all .25s ease;

opacity:0;
animation:heroButtonFade 1s ease forwards;
animation-delay:0.6s;
}


@keyframes heroButtonFade {
0%{
opacity:0;
transform:translateY(20px);
}

100%{
opacity:1;
transform:translateY(0);
}
}