/*=========================================
      RESEARCH HERO
=========================================*/

:root{
    --primary:#E1600F;
    --primary-dark:#B74A09;
    --accent:#FFA733;
    --white:#ffffff;
    --text:#24313F;
    --muted:#6b7280;
    --border:#ececec;
    --bg:#FFF9F5;
    --shadow:0 15px 40px rgba(0,0,0,.08);
}

.research-hero{
    position:relative;
    overflow:hidden;
    padding:120px 0 90px;
    background:linear-gradient(135deg,#E1600F 0%,#FF8C29 100%);
}

.research-hero::before{
    content:"";
    position:absolute;
    inset:0;
    background:url("../images/pattern.png");
    opacity:.08;
}

.research-hero::after{
    content:"";
    position:absolute;
    width:650px;
    height:650px;
    right:-220px;
    top:-220px;
    border-radius:50%;
    background:rgba(255,255,255,.08);
}

.hero-content{
    position:relative;
    z-index:2;
    max-width:820px;
    text-align:center;
    margin:auto;
}

.hero-tag{
    display:inline-flex;
    align-items:center;
    gap:10px;
    padding:10px 22px;
    border-radius:40px;
    background:rgba(255,255,255,.15);
    backdrop-filter:blur(10px);
    color:#fff;
    font-weight:600;
    margin-bottom:25px;
    border:1px solid rgba(255,255,255,.25);
}

.hero-tag i{
    color:#FFD36A;
}

.research-hero h1{
    color:#fff;
    font-size:52px;
    font-weight:800;
    line-height:1.2;
    margin-bottom:22px;
}

.research-hero p{
    color:rgba(255,255,255,.92);
    font-size:18px;
    line-height:1.9;
    max-width:760px;
    margin:0 auto 40px;
}

.hero-buttons{
    display:flex;
    justify-content:center;
    gap:18px;
    flex-wrap:wrap;
}

.hero-buttons .btn{
    border-radius:50px;
    padding:14px 34px;
    font-weight:600;
    transition:.35s;
}

.hero-buttons .btn-warning{
    background:#fff;
    color:var(--primary);
    border:none;
}

.hero-buttons .btn-warning:hover{
    transform:translateY(-5px);
    box-shadow:0 12px 25px rgba(0,0,0,.15);
}

.hero-buttons .btn-outline-light:hover{
    background:#fff;
    color:var(--primary);
}

/*=========================================
      RESEARCH STATS
=========================================*/

.research-stats{
    margin-top:-70px;
    position:relative;
    z-index:10;
    padding-bottom:70px;
}

.stat-card{
    background:#fff;
    border-radius:18px;
    padding:40px 25px;
    text-align:center;
    box-shadow:var(--shadow);
    transition:.35s;
    border:1px solid rgba(225,96,15,.08);
    height:100%;
}

.stat-card:hover{
    transform:translateY(-10px);
}

.stat-card i{
    width:75px;
    height:75px;
    border-radius:50%;
    display:flex;
    align-items:center;
    justify-content:center;
    margin:auto;
    font-size:30px;
    color:var(--primary);
    background:#FFF3EA;
}

.stat-card h2{
    margin:22px 0 10px;
    font-size:42px;
    color:var(--primary);
    font-weight:800;
}

.stat-card p{
    margin:0;
    color:var(--muted);
    font-weight:600;
    font-size:16px;
}

/*=========================================
      SECTION TITLE
=========================================*/

.section-title{
    text-align:center;
    margin-bottom:45px;
}

.section-title h2{
    font-size:40px;
    font-weight:800;
    color:var(--text);
    margin-bottom:12px;
}

.section-title p{
    max-width:720px;
    margin:auto;
    color:var(--muted);
    line-height:1.8;
}

/*=========================================
      SEARCH BAR
=========================================*/

.research-search{
    padding:70px 0;
    background:#fff;
}

.search-box{
    position:relative;
}

.search-box i{
    position:absolute;
    left:18px;
    top:50%;
    transform:translateY(-50%);
    color:#999;
}

.search-box input{
    height:58px;
    padding-left:50px;
    border-radius:14px;
    border:1px solid #ddd;
    box-shadow:none;
}

.search-box input:focus{
    border-color:var(--primary);
    box-shadow:0 0 0 .2rem rgba(225,96,15,.15);
}

.research-search .form-select{
    height:58px;
    border-radius:14px;
    border:1px solid #ddd;
}

.research-search .form-select:focus{
    border-color:var(--primary);
    box-shadow:0 0 0 .2rem rgba(225,96,15,.15);
}

.research-search .btn{
    height:58px;
    border-radius:14px;
    font-weight:600;
}

/*=========================================
      RESPONSIVE
=========================================*/

@media(max-width:992px){

.research-hero{
padding:90px 0 70px;
}

.research-hero h1{
font-size:40px;
}

.research-stats{
margin-top:-40px;
}

}

@media(max-width:768px){

.research-hero h1{
font-size:32px;
}

.research-hero p{
font-size:16px;
}

.hero-buttons{
flex-direction:column;
}

.hero-buttons .btn{
width:100%;
}

.stat-card{
padding:30px 20px;
}

.stat-card h2{
font-size:34px;
}

.section-title h2{
font-size:30px;
}

.research-search .row>div{
margin-bottom:15px;
}

}

@media(max-width:576px){

.research-hero{
padding:70px 0 60px;
}

.hero-tag{
font-size:14px;
}

.research-hero h1{
font-size:28px;
}

}
/*=========================================
        PUBLICATION SECTION
=========================================*/

.publication-section{
    padding:80px 0;
    background:#f8fafc;
}

.publication-card{
    position:relative;
    background:#fff;
    border-radius:18px;
    padding:28px;
    border:1px solid #ececec;
    border-left:5px solid var(--primary);
    box-shadow:0 10px 30px rgba(0,0,0,.05);
    transition:all .35s ease;
    height:100%;
    overflow:hidden;
}

.publication-card::before{
    content:"";
    position:absolute;
    left:0;
    top:0;
    width:100%;
    height:4px;
    background:linear-gradient(90deg,var(--primary),var(--accent));
    transform:scaleX(0);
    transform-origin:left;
    transition:.4s;
}

.publication-card:hover::before{
    transform:scaleX(1);
}

.publication-card:hover{
    transform:translateY(-10px);
    box-shadow:0 20px 45px rgba(0,0,0,.10);
}

/*=========================================
        TOP BADGES
=========================================*/

.publication-top{
    display:flex;
    justify-content:space-between;
    align-items:center;
    margin-bottom:20px;
    flex-wrap:wrap;
    gap:10px;
}

.year-badge{
    background:var(--primary);
    color:#fff;
    padding:6px 16px;
    border-radius:30px;
    font-size:13px;
    font-weight:600;
}

.dept-badge{
    background:#FFF2E8;
    color:var(--primary);
    padding:6px 16px;
    border-radius:30px;
    font-size:13px;
    font-weight:600;
}

/*=========================================
        TITLE
=========================================*/

.publication-card h3{
    font-size:22px;
    line-height:1.6;
    color:#1f2937;
    font-weight:700;
    margin-bottom:20px;
    transition:.3s;
}

.publication-card:hover h3{
    color:var(--primary);
}

/*=========================================
        AUTHOR
=========================================*/

.author,
.department,
.journal{
    display:flex;
    align-items:flex-start;
    gap:10px;
    margin-bottom:12px;
    color:#555;
    line-height:1.7;
    font-size:15px;
}

.author i,
.department i,
.journal i{
    color:var(--primary);
    width:20px;
    margin-top:3px;
}

/*=========================================
        META INFO
=========================================*/

.publication-meta{
    display:flex;
    flex-wrap:wrap;
    gap:12px;
    margin-top:18px;
    margin-bottom:24px;
}

.publication-meta span{
    display:inline-flex;
    align-items:center;
    gap:6px;
    background:#f7f7f7;
    padding:8px 14px;
    border-radius:25px;
    font-size:13px;
    color:#666;
}

.publication-meta i{
    color:var(--primary);
}

/*=========================================
        BUTTONS
=========================================*/

.publication-btns{
    display:flex;
    gap:12px;
    flex-wrap:wrap;
}

.publication-btns .btn{
    border-radius:40px;
    padding:10px 22px;
    font-weight:600;
    transition:.3s;
}

.publication-btns .btn-warning{
    background:var(--primary);
    border:none;
    color:#fff;
}

.publication-btns .btn-warning:hover{
    background:var(--primary-dark);
    transform:translateY(-3px);
}

.publication-btns .btn-outline-warning{
    border:2px solid var(--primary);
    color:var(--primary);
}

.publication-btns .btn-outline-warning:hover{
    background:var(--primary);
    color:#fff;
}

/*=========================================
        ICON EFFECT
=========================================*/

.publication-card i{
    transition:.3s;
}

.publication-card:hover .journal i,
.publication-card:hover .author i,
.publication-card:hover .department i{
    transform:scale(1.15);
}

/*=========================================
        RESPONSIVE
=========================================*/

@media (max-width:992px){

    .publication-card{
        padding:24px;
    }

    .publication-card h3{
        font-size:20px;
    }

}

@media (max-width:768px){

    .publication-card{
        padding:22px;
    }

    .publication-card h3{
        font-size:18px;
    }

    .publication-meta{
        gap:8px;
    }

    .publication-btns{
        flex-direction:column;
    }

    .publication-btns .btn{
        width:100%;
        text-align:center;
    }

}

@media (max-width:576px){

    .publication-top{
        flex-direction:column;
        align-items:flex-start;
    }

    .publication-card h3{
        font-size:17px;
    }

    .publication-meta span{
        font-size:12px;
        padding:7px 12px;
    }

}

/* Scroll Animation */

.hidden{
    opacity:0;
    transform:translateY(40px);
    transition:all .6s ease;
}

.show{
    opacity:1;
    transform:translateY(0);
}