/*
Theme Name: Rohan Portfolio
Theme URI: http://sofikulrohan.com
Author: Md. Sofikul Islam Rohan
Author URI: http://sofikulrohan.com
Description: Custom premium dark-themed portfolio for Md. Sofikul Islam Rohan.
Version: 1.0
*/

header {
    width: 100%;
    background-color: #0b1a33; 
}
.nav {
    display: flex !important;
    justify-content: space-between !important;
    align-items: center !important;
    padding: 20px 60px !important;
}

:root {
  --navy:#0A1628; --accent:#C9A84C; --accent-light:#E8C97A;
  --white:#F8FAFC; --text-primary:#EFF4F9; --text-secondary:#A8BDCF;
  --text-muted:#6B8099; --border:rgba(201,168,76,0.2);
  --card-bg:rgba(255,255,255,0.04); --card-border:rgba(255,255,255,0.08);
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:'Source Sans 3',sans-serif;background:var(--navy);color:var(--text-primary);line-height:1.7;overflow-x:hidden}
body::before{content:'';position:fixed;top:0;left:0;right:0;bottom:0;background-image:linear-gradient(rgba(201,168,76,0.03) 1px,transparent 1px),linear-gradient(90deg,rgba(201,168,76,0.03) 1px,transparent 1px);background-size:60px 60px;pointer-events:none;z-index:0}
/* লাইন ২০-এ এটি রিপ্লেস করুন */
nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    padding: 14px 60px;
    display: flex;
    justify-content: space-between; /* লোগো বামে এবং মেনু ডানে সরাবে */
    align-items: center;
    background: rgba(10,22,40,0.92);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
}
.nav-logo{font-family:'Playfair Display',serif;font-size:1.3rem;font-weight:600;color:var(--accent);text-decoration:none}
/* লাইন ২২-এ এটি আপডেট করুন */
.nav-links {
    display: flex;
    gap: 30px; /* মেনুগুলোর মাঝখানের দূরত্ব বাড়াবে */
    list-style: none;
    flex-wrap: wrap;
    margin: 0;
    padding: 0;
}
.nav-links a{color:var(--text-secondary);text-decoration:none;font-size:0.8rem;font-weight:500;letter-spacing:0.5px;text-transform:uppercase;transition:color 0.2s;position:relative}
.nav-links a::after{content:'';position:absolute;bottom:-4px;left:0;right:0;height:1px;background:var(--accent);transform:scaleX(0);transition:transform 0.2s}
.nav-links a:hover{color:var(--accent)}
.nav-links a:hover::after{transform:scaleX(1)}
section{position:relative;z-index:1}
.sw{max-width:1200px;margin:0 auto;padding:100px 60px}
.sb{background:rgba(255,255,255,0.02);border-top:1px solid var(--border);border-bottom:1px solid var(--border)}
.sh{display:flex;align-items:center;gap:20px;margin-bottom:56px}
.sn{font-family:'JetBrains Mono',monospace;font-size:0.8rem;color:var(--accent);letter-spacing:2px}
.st{font-family:'Playfair Display',serif;font-size:2rem;font-weight:600;color:var(--white)}
.sl{flex:1;height:1px;background:var(--border);max-width:280px}
.hint{display:inline-flex;align-items:center;gap:6px;font-size:0.75rem;color:var(--text-muted);background:rgba(255,255,255,0.03);border:1px dashed rgba(255,255,255,0.1);padding:5px 12px;border-radius:2px;margin-bottom:32px;font-family:'JetBrains Mono',monospace}

/* HERO */
#hero{min-height:100vh;display:flex;align-items:center;padding:120px 60px 80px;max-width:1200px;margin:0 auto}
.hero-tag{display:inline-block;font-family:'JetBrains Mono',monospace;font-size:0.78rem;color:var(--accent);letter-spacing:2px;text-transform:uppercase;margin-bottom:28px;padding:6px 14px;border:1px solid var(--border);border-radius:2px}
.hero-tag::before{content:'// ';opacity:0.5}
h1.hn{font-family:'Playfair Display',serif;font-size:clamp(3rem,6vw,5rem);font-weight:700;line-height:1.1;color:var(--white);margin-bottom:12px}
h1.hn span{color:var(--accent)}
.htitle{font-size:1.1rem;color:var(--text-secondary);margin-bottom:32px;line-height:1.6}
.hdesc{font-size:1rem;color:var(--text-muted);max-width:600px;margin-bottom:48px;line-height:1.8}
.hcta{display:flex;gap:16px;flex-wrap:wrap}
.bp{display:inline-flex;align-items:center;gap:8px;padding:14px 32px;background:var(--accent);color:var(--navy);text-decoration:none;font-weight:600;font-size:0.9rem;border-radius:2px;transition:all 0.2s}
.bp:hover{background:var(--accent-light);transform:translateY(-2px)}
.bo{display:inline-flex;align-items:center;gap:8px;padding:13px 32px;border:1px solid var(--border);color:var(--text-secondary);text-decoration:none;font-weight:500;font-size:0.9rem;border-radius:2px;transition:all 0.2s}
.bo:hover{border-color:var(--accent);color:var(--accent);transform:translateY(-2px)}

/* ABOUT */
.ag{display:grid;grid-template-columns:1fr 1fr;gap:80px;align-items:start}
.at p{color:var(--text-secondary);font-size:1rem;line-height:1.9;margin-bottom:20px}
.at p strong{color:var(--accent);font-weight:600}
.as{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.sc{padding:28px 24px;background:var(--card-bg);border:1px solid var(--card-border);border-top:2px solid var(--accent);border-radius:2px;transition:all 0.2s}
.sc:hover{background:rgba(255,255,255,0.07)}
.snum{font-family:'Playfair Display',serif;font-size:2rem;font-weight:700;color:var(--accent);margin-bottom:6px}
.slbl{font-size:0.82rem;color:var(--text-muted);text-transform:uppercase;letter-spacing:1px}

/* SKILLS */
.skg{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:24px}
.skc{padding:32px 28px;background:var(--card-bg);border:1px solid var(--card-border);border-radius:2px;position:relative;overflow:hidden;transition:all 0.25s}
.skc::before{content:'';position:absolute;top:0;left:0;width:3px;height:100%;background:var(--accent);transform:scaleY(0);transform-origin:bottom;transition:transform 0.3s}
.skc:hover::before{transform:scaleY(1)}
.skc:hover{background:rgba(255,255,255,0.06)}
.skie{font-size:1.6rem;margin-bottom:16px}
.skcat{font-family:'Playfair Display',serif;font-size:1rem;font-weight:600;color:var(--white);margin-bottom:14px}
.skl{list-style:none}
.skl li{font-size:0.88rem;color:var(--text-secondary);padding:5px 0;border-bottom:1px solid rgba(255,255,255,0.04);display:flex;align-items:center;gap:8px}
.skl li:last-child{border-bottom:none}
.skl li::before{content:'▸';color:var(--accent);font-size:0.75rem;flex-shrink:0}

/* PROJECTS */
.pjg{display:grid;grid-template-columns:repeat(auto-fit,minmax(320px,1fr));gap:28px}
.pjc{padding:30px 26px;background:var(--card-bg);border:1px solid var(--card-border);border-radius:2px;transition:all 0.25s;display:flex;flex-direction:column}
.pjc:hover{background:rgba(255,255,255,0.07);border-color:rgba(201,168,76,0.35);transform:translateY(-4px)}
.pjt{display:flex;justify-content:space-between;align-items:flex-start;margin-bottom:18px}
.pjico font-size:1.8rem}
.pjlks{display:flex;gap:8px}
.pjlk{font-size:0.75rem;color:var(--text-muted);text-decoration:none;border:1px solid var(--card-border);padding:4px 10px;border-radius:2px;transition:all 0.2s;font-family:'JetBrains Mono',monospace}
.pjlk:hover{color:var(--accent);border-color:var(--border)}
.pjn{font-family:'Playfair Display',serif;font-size:1.1rem;font-weight:600;color:var(--white);margin-bottom:10px}
.pjd{font-size:0.88rem;color:var(--text-muted);line-height:1.7;flex:1;margin-bottom:18px}
.pjtags{display:flex;flex-wrap:wrap;gap:7px}
.tg{font-family:'JetBrains Mono',monospace;font-size:0.7rem;color:var(--accent);background:rgba(201,168,76,0.08);padding:3px 9px;border-radius:2px;border:1px solid rgba(201,168,76,0.15)}
.tgw{color:var(--text-muted);background:rgba(255,255,255,0.04);border-color:rgba(255,255,255,0.08)}

/* PAPERS */
.rpl{display:flex;flex-direction:column;gap:18px}
.rpc{padding:26px 30px;background:var(--card-bg);border:1px solid var(--card-border);border-left:3px solid var(--accent);border-radius:2px;transition:all 0.25s;display:flex;align-items:flex-start;gap:22px}
.rpc:hover{background:rgba(255,255,255,0.07)}
.rpn{font-family:'JetBrains Mono',monospace;font-size:1.6rem;font-weight:500;color:rgba(201,168,76,0.3);line-height:1;flex-shrink:0;min-width:32px}
.rpb{flex:1}
.rpst{display:inline-block;font-size:0.7rem;text-transform:uppercase;letter-spacing:1px;padding:3px 9px;border-radius:2px;margin-bottom:10px;font-family:'JetBrains Mono',monospace}
.st-up{color:#6B8099;background:rgba(255,255,255,0.04);border:1px solid rgba(255,255,255,0.08)}
.st-on{color:#C9A84C;background:rgba(201,168,76,0.08);border:1px solid rgba(201,168,76,0.2)}
.st-pub{color:#4EA87A;background:rgba(78,168,122,0.08);border:1px solid rgba(78,168,122,0.2)}
.rptitle{font-family:'Playfair Display',serif;font-size:1.02rem;font-weight:600;color:var(--white);margin-bottom:7px;line-height:1.4}
.rpmeta{font-size:0.8rem;color:var(--text-muted);margin-bottom:8px}
.rpabs{font-size:0.87rem;color:var(--text-secondary);line-height:1.7}
.rplink{display:inline-flex;align-items:center;gap:6px;margin-top:10px;font-size:0.8rem;color:var(--accent);text-decoration:none;font-family:'JetBrains Mono',monospace}
.rplink:hover {text-decoration:underline}

/* BLOG/ARTICLES */
.blg{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:22px}
.blc{padding:26px;background:var(--card-bg);border:1px solid var(--card-border);border-radius:2px;transition:all 0.25s;display:flex;flex-direction:column}
.blc:hover{background:rgba(255,255,255,0.06);border-color:rgba(201,168,76,0.3);transform:translateY(-3px)}
.blt{display:inline-block;font-family:'JetBrains Mono',monospace;font-size:0.68rem;text-transform:uppercase;letter-spacing:1px;padding:3px 9px;border-radius:2px;margin-bottom:12px}
.blt-a{color:#A8BDCF;background:rgba(168,189,207,0.08);border:1px solid rgba(168,189,207,0.15)}
.blt-b{color:#C9A84C;background:rgba(201,168,76,0.08);border:1px solid rgba(201,168,76,0.2)}
.bltitle{font-family:'Playfair Display',serif;font-size:0.98rem;font-weight:600;color:var(--white);margin-bottom:9px;line-height:1.4}
.blexc{font-size:0.87rem;color:var(--text-muted);line-height:1.7;margin-bottom:16px;flex:1}
.blft{display:flex;justify-content:space-between;align-items:center}
.bldate{font-size:0.76rem;color:var(--text-muted);font-family:'JetBrains Mono',monospace}
.blrd{font-size:0.8rem;color:var(--accent);text-decoration:none}
.blrd:hover{text-decoration:underline}

/* TUTORIALS */
.tutg{display:grid;grid-template-columns:repeat(auto-fit,minmax(270px,1fr));gap:22px}
.tutc{padding:26px 24px;background:var(--card-bg);border:1px solid var(--card-border);border-radius:2px;transition:all 0.25s}
.tutc:hover{background:rgba(255,255,255,0.06);border-color:rgba(201,168,76,0.3);transform:translateY(-3px)}
.tutsub{display:flex;align-items:center;gap:10px;margin-bottom:13px}
.tutie{font-size:1.3rem}
.tutlbl{font-family:'JetBrains Mono',monospace;font-size:0.7rem;color:var(--accent);text-transform:uppercase;letter-spacing:1px}
.tuttitle{font-family:'Playfair Display',serif;font-size:0.98rem;font-weight:600;color:var(--white);margin-bottom:8px;line-height:1.4}
.tutdesc{font-size:0.86rem;color:var(--text-muted);line-height:1.7;margin-bottom:14px}
.tutmeta{display:flex;gap:8px;flex-wrap:wrap}
.tutbadge{font-size:0.72rem;color:var(--text-muted);background:rgba(255,255,255,0.04);border:1px solid rgba(255,255,255,0.08);padding:3px 9px;border-radius:2px;font-family:'JetBrains Mono',monospace}

/* RESEARCH INTERESTS */
.rig{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:26px}
.ric{padding:34px 30px;background:var(--card-bg);border:1px solid var(--card-border);border-radius:2px;transition:all 0.25s}
.ric:hover{background:rgba(255,255,255,0.06);border-color:rgba(201,168,76,0.3);transform:translateY(-4px)}
.ritag{display:inline-block;font-family:'JetBrains Mono',monospace;font-size:0.7rem;color:var(--accent);background:rgba(201,168,76,0.1);padding:4px 10px;border-radius:2px;margin-bottom:16px;text-transform:uppercase;letter-spacing:1px}
.rititle{font-family:'Playfair Display',serif;font-size:1.1rem;font-weight:600;color:var(--white);margin-bottom:11px;line-height:1.4}
.ridesc{font-size:0.88rem;color:var(--text-muted);line-height:1.7}

/* CONTACT */
.cg{display:grid;grid-template-columns:1.2fr 1fr;gap:80px;align-items:start}
.ci h2{font-family:'Playfair Display',serif;font-size:2.4rem;font-weight:700;color:var(--white);line-height:1.2;margin-bottom:18px}
.ci h2 span{color:var(--accent)}
.ci p{color:var(--text-muted);font-size:1rem;line-height:1.8}
.cls{display:flex;flex-direction:column;gap:12px}
.cl{display:flex;align-items:center;gap:15px;padding:15px 18px;background:var(--card-bg);border:1px solid var(--card-border);border-radius:2px;text-decoration:none;transition:all 0.2s}
.cl:hover{background:rgba(255,255,255,0.07);border-color:rgba(201,168,76,0.4);transform:translateX(4px)}
.cico{width:38px;height:38px;background:rgba(201,168,76,0.1);border:1px solid rgba(201,168,76,0.2);border-radius:2px;display:flex;align-items:center;justify-content:center;font-size:1rem;flex-shrink:0}
.cilbl{font-size:0.74rem;text-transform:uppercase;letter-spacing:1px;color:var(--text-muted);margin-bottom:2px}
.cival{font-size:0.88rem;color:var(--text-secondary);font-weight:500}
.cl:hover .cival{color:var(--accent)}

footer{padding:36px 60px;border-top:1px solid var(--border);display:flex;justify-content:space-between;align-items:center;position:relative;z-index:1}
.fn{font-family:'Playfair Display',serif;font-size:1rem;color:var(--accent)}
.fc{font-size:0.8rem;color:var(--text-muted)}
/* ==========================================
   FINAL BULLETPROOF MOBILE RESPONSIVE CODES
   ========================================== */
@media (max-width: 768px) {
    
    .ci {
        display: flex !important;
        flex-direction: column !important; 
        gap: 25px !important;
    }

    
    .ci > div {
        width: 100% !important;
        max-width: 100% !important;
    }

    .as {
        display: flex !important;
        flex-direction: row !important; 
        flex-wrap: wrap !important; 
        justify-content: center !important;
        gap: 15px !important;
        width: 100% !important;
    }

    .sc {
        flex: 1 1 130px !important; 
        min-width: 120px !important;
        max-width: 100% !important;
    }

    header, .header, nav, .nav {
        display: flex !important;
        flex-direction: column !important; 
        gap: 12px !important;
        padding: 15px !important;
    }

    header nav, .menu, .nav-links {
        display: flex !important;
        flex-wrap: wrap !important;
        justify-content: center !important;
        gap: 10px !important;
    }
}
/* ৪টি কলামের গ্রিড লেআউট */
.tutg {
    display: grid;
    grid-template-columns: repeat(4, 1fr); /* ৪টি কলাম */
    gap: 20px; /* কলামের মাঝখানের ফাঁকা জায়গা */
    padding: 20px 0;
}

/* মোবাইল এবং ট্যাবলেটের জন্য রেসপন্সিভ করা */
@media (max-width: 1024px) { .tutg { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 600px) { .tutg { grid-template-columns: 1fr; } }

/* প্রতিটি বক্সের ডিজাইন */
.tutc {
    border: 1px solid #ddd;
    padding: 15px;
    border-radius: 8px;
    background: #f9f9f9;
}