/*!
    Abdelrahman Elewah Portfolio — Dark AI Theme
*/

/* ─── Global ─────────────────────────────────────────────────────────────── */

*{box-sizing:border-box}

body{font-family:'Lato',sans-serif;font-size:16px;background:#080d1a;color:#e2e8f0}
body.active{overflow:hidden;z-index:-1}

a{color:#00d4ff;text-decoration:none;transition:.2s ease all}
a:hover{color:#00aacc;text-decoration:none}

.no-js #experience-timeline>div{background:#111827;padding:10px;margin-bottom:10px;border:1px solid rgba(255,255,255,.07)}
.no-js #experience-timeline>div h3{font-size:1.5em;font-weight:300;color:#e2e8f0;display:inline-block;margin:0}
.no-js #experience-timeline>div h4{font-size:1.2em;font-weight:300;color:#94a3b8;margin:0 0 15px}
.no-js #experience-timeline>div p{color:#94a3b8;font-size:.9em;margin:0}
.no-js #experience-timeline:before,.no-js #experience-timeline:after{content:none}

/* ─── Animations ─────────────────────────────────────────────────────────── */

@keyframes dropHeader{0%{transform:translateY(-100%)}100%{transform:translateY(0)}}
@keyframes pulsate{0%,100%{transform:scale(1,1)}50%{transform:scale(1.2,1.2)}}
@keyframes glowPulse{0%,100%{box-shadow:0 0 8px rgba(0,212,255,.3)}50%{box-shadow:0 0 22px rgba(0,212,255,.7)}}
@keyframes gradientShift{0%{background-position:0% 50%}50%{background-position:100% 50%}100%{background-position:0% 50%}}
@keyframes fadeInUp{from{opacity:0;transform:translateY(24px)}to{opacity:1;transform:translateY(0)}}
@keyframes gridScroll{from{background-position:0 0}to{background-position:40px 40px}}

/* ─── Scroll reveal ──────────────────────────────────────────────────────── */

.reveal{opacity:0;transform:translateY(24px);transition:.6s ease all}
.reveal.is-visible{opacity:1;transform:translateY(0)}

/* ─── Header / Nav ───────────────────────────────────────────────────────── */

header{position:absolute;top:0;left:0;right:0;text-align:center;z-index:10;animation:dropHeader .75s ease 1}
header ul{display:inline-block;background:rgba(8,13,26,.92);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border:1px solid rgba(255,255,255,.07);border-top:none;text-align:center;padding:8px 6px;margin:0;border-bottom-right-radius:10px;border-bottom-left-radius:10px}
header li{display:inline-block}
header a{display:block;color:#94a3b8;padding:8px 12px;font-size:.9em;letter-spacing:.04em;border-radius:6px;transition:.2s ease all}
header a:hover{color:#00d4ff;background:rgba(0,212,255,.08);text-decoration:none}
header a:focus{color:#00d4ff;text-decoration:none}
header.active{display:block}
header.sticky{position:fixed;z-index:999}

#menu.active{display:block}

#mobile-menu-open{display:none;cursor:pointer;position:fixed;right:15px;top:10px;color:#00d4ff;font-size:1.5em;z-index:20;padding:0 7px;border-radius:4px;background:#111827;border:1px solid rgba(255,255,255,.07)}
#mobile-menu-close{display:none;text-align:right;width:100%;background:#111827;font-size:1.5em;padding-right:15px;padding-top:10px;cursor:pointer;color:#00d4ff}
#mobile-menu-close span{font-size:.5em;text-transform:uppercase}
#mobile-menu-close i{vertical-align:middle}

/* ─── Footer ─────────────────────────────────────────────────────────────── */

footer{padding:50px 0;background:#080d1a;border-top:1px solid rgba(255,255,255,.07)}
.copyright{padding-top:20px}
.copyright p{margin:0;color:#94a3b8;font-size:.9em}
.top{text-align:center}
.top span{cursor:pointer;display:block;margin:15px auto 0;width:35px;height:35px;border-radius:50%;border:2px solid rgba(0,212,255,.4);text-align:center;transition:.2s ease all}
.top span:hover{border-color:#00d4ff;box-shadow:0 0 15px rgba(0,212,255,.4)}
.top i{color:#00d4ff;line-height:32px}
.social{text-align:right}
.social ul{margin:5px 0 0;padding:0}
.social li{display:inline-block;font-size:1.25em;list-style:none}
.social a{display:block;color:#94a3b8;padding:10px;transition:.2s ease all}
.social a:hover{color:#00d4ff;text-shadow:0 0 10px rgba(0,212,255,.6)}

/* ─── Shared Utilities ───────────────────────────────────────────────────── */

.btn-rounded-white{display:inline-block;color:#00d4ff;padding:14px 32px;border:2px solid #00d4ff;border-radius:30px;font-weight:600;letter-spacing:.05em;font-family:'Space Grotesk',sans-serif;transition:.3s ease all}
.btn-rounded-white:hover{background:#00d4ff;color:#080d1a;text-decoration:none;box-shadow:0 0 24px rgba(0,212,255,.5)}

.shadow{box-shadow:0 1px 3px rgba(0,0,0,.4),0 1px 2px rgba(0,0,0,.5)}
.shadow-large{box-shadow:0 4px 16px rgba(0,0,0,.4)}

.heading{font-family:'Space Grotesk',sans-serif;position:relative;display:inline-block;font-size:2em;font-weight:700;margin:0 0 30px;color:#e2e8f0}
.heading:after{position:absolute;content:'';top:100%;height:3px;width:50px;left:0;right:0;margin:6px auto 0;background:#00d4ff;border-radius:2px;box-shadow:0 0 8px rgba(0,212,255,.6)}

.background-alt{background:#0d1530}

/* ─── 4. Lead ─────────────────────────────────────────────────────────────── */

#lead{position:relative;height:100vh;min-height:500px;max-height:1080px;background:#080d1a;padding:15px;overflow:hidden}

#lead-grid{position:absolute;top:0;right:0;bottom:0;left:0;background-image:linear-gradient(rgba(0,212,255,.04) 1px,transparent 1px),linear-gradient(90deg,rgba(0,212,255,.04) 1px,transparent 1px);background-size:40px 40px;animation:gridScroll 8s linear infinite;z-index:0}

#lead-overlay{position:absolute;top:0;right:0;bottom:0;left:0;background:radial-gradient(ellipse at center,rgba(13,21,48,.6) 0%,rgba(8,13,26,.95) 70%);z-index:1}

#lead-content{position:absolute;z-index:10;top:50%;left:50%;transform:translate(-50%,-50%);text-align:center}
#lead-content h1,#lead-content h2{margin:0}
#lead-content h1{font-family:'Space Grotesk',sans-serif;font-weight:700;font-size:5em;text-transform:uppercase;letter-spacing:.05em;line-height:.9em;background:linear-gradient(135deg,#fff 0%,#00d4ff 50%,#7c3aed 100%);background-size:200% 200%;-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;animation:gradientShift 5s ease infinite}
#lead-content h2{color:#00d4ff;font-weight:400;font-size:1.8em;margin-bottom:30px;margin-top:12px;min-height:1.4em;font-family:'Space Grotesk',sans-serif;letter-spacing:.03em}

#typed-text::after{content:'|';color:#00d4ff;animation:pulsate .8s ease infinite;margin-left:2px;font-weight:300}

#lead-down{position:absolute;left:0;right:0;width:100%;text-align:center;z-index:10;bottom:15px}
#lead-down span{cursor:pointer;display:block;margin:0 auto;width:38px;height:38px;border-radius:50%;border:2px solid rgba(0,212,255,.5);text-align:center;transition:.2s ease all}
#lead-down span:hover{border-color:#00d4ff;box-shadow:0 0 15px rgba(0,212,255,.4)}
#lead-down i{color:#00d4ff;animation:pulsate 1.5s ease infinite;padding-top:8px}

/* ─── 5. About ────────────────────────────────────────────────────────────── */

#about{padding:75px 15px;border-bottom:1px solid rgba(255,255,255,.07)}
#about h2{color:#e2e8f0}
#about p{color:#94a3b8;margin:0;line-height:1.8;font-size:1.05em}

/* ─── 6. Experience ───────────────────────────────────────────────────────── */

#experience{padding:50px 15px;text-align:center;border-bottom:1px solid rgba(255,255,255,.07)}
#experience h2{color:#e2e8f0}

#experience-timeline{margin:30px auto 0;position:relative;max-width:1000px}
#experience-timeline:before{position:absolute;content:'';top:0;bottom:0;left:303px;right:auto;height:100%;width:2px;background:linear-gradient(to bottom,#00d4ff,rgba(0,212,255,.1));z-index:0}
#experience-timeline:after{position:absolute;content:'';width:2px;height:40px;background:linear-gradient(to bottom,rgba(0,212,255,.3),rgba(0,212,255,0));top:100%;left:303px}

.vtimeline-content{margin-left:350px;background:#111827;border:1px solid rgba(255,255,255,.07);padding:20px;border-radius:8px;text-align:left;transition:.3s ease all}
.vtimeline-content:hover{border-color:rgba(0,212,255,.3);box-shadow:0 0 20px rgba(0,212,255,.2)}
.vtimeline-content h3{font-family:'Space Grotesk',sans-serif;font-size:1.3em;font-weight:600;color:#e2e8f0;display:inline-block;margin:0}
.vtimeline-content h4{font-size:1em;font-weight:400;color:#00d4ff;margin:4px 0 12px}
.vtimeline-content p{color:#94a3b8;font-size:.9em;margin:0}
.vtimeline-content ul{margin:0;padding-left:18px;color:#94a3b8;font-size:.9em}
.vtimeline-content ul li{margin-bottom:6px;line-height:1.6}
.vtimeline-content ul li strong{color:#e2e8f0}
.vtimeline-content ul li a{color:#00d4ff;font-size:.85em}
.vtimeline-content ul li a:hover{color:#00aacc}

.vtimeline-point{position:relative;display:block;vertical-align:top;margin-bottom:30px}
.vtimeline-icon{position:relative;color:#080d1a;width:46px;height:46px;background:#00d4ff;border-radius:50%;float:left;z-index:99;margin-left:280px;animation:glowPulse 3s ease infinite}
.vtimeline-icon i{display:block;font-size:1.4em;margin-top:13px;text-align:center}
.vtimeline-date{width:260px;text-align:right;position:absolute;left:0;top:12px;font-weight:400;font-size:.9em;color:#00d4ff;font-family:'Space Grotesk',sans-serif}

/* ─── 7. Education ────────────────────────────────────────────────────────── */

#education{padding:50px 15px 30px;border-bottom:1px solid rgba(255,255,255,.07);text-align:center}
#education h2{color:#e2e8f0;margin-bottom:50px}

.education-block{max-width:700px;margin:0 auto 24px;padding:20px;background:#111827;border:1px solid rgba(255,255,255,.07);border-radius:8px;text-align:left;transition:.3s ease all}
.education-block:hover{border-color:rgba(0,212,255,.3);box-shadow:0 0 20px rgba(0,212,255,.2)}
.education-block h3{font-family:'Space Grotesk',sans-serif;font-weight:600;float:left;margin:0;color:#e2e8f0}
.education-block span.education-date{color:#00d4ff;float:right;font-size:.9em}
.education-block h4{color:#94a3b8;clear:both;font-weight:400;margin:6px 0 10px;font-size:.95em}
.education-block p,.education-block ul{margin:0;color:#94a3b8;font-size:.88em;line-height:1.6}
.education-block p a,.education-block ul a{color:#00d4ff}
.education-block p a:hover,.education-block ul a:hover{color:#00aacc}
.education-block ul{padding:0 0 0 15px}

/* ─── 8. Publications ─────────────────────────────────────────────────────── */

#publications{padding:50px 15px;text-align:center;border-bottom:1px solid rgba(255,255,255,.07)}
#publications h2{color:#e2e8f0;margin-bottom:40px}

.publication-block{max-width:750px;margin:0 auto 20px;padding:20px 24px;background:#111827;border:1px solid rgba(255,255,255,.07);border-left:3px solid #7c3aed;border-radius:8px;text-align:left;transition:.3s ease all}
.publication-block:hover{border-color:rgba(124,58,237,.5);border-left-color:#7c3aed;box-shadow:0 0 20px rgba(124,58,237,.15)}
.publication-block .pub-venue{font-size:.82em;font-family:'Space Grotesk',sans-serif;color:#00d4ff;text-transform:uppercase;letter-spacing:.08em;margin:0 0 6px}
.publication-block .pub-venue .pub-year{color:#94a3b8}
.publication-block h3{font-family:'Space Grotesk',sans-serif;font-size:1.05em;font-weight:600;color:#e2e8f0;margin:0 0 8px;line-height:1.4}
.publication-block .pub-authors{font-size:.85em;color:#94a3b8;margin:0 0 12px}
.publication-block a{font-size:.85em;font-weight:600;color:#00d4ff;transition:.2s ease all}
.publication-block a i{margin-left:4px;font-size:.8em}
.publication-block a:hover{color:#00aacc}

/* ─── 9. Projects ─────────────────────────────────────────────────────────── */

#projects{padding:50px 15px;border-bottom:1px solid rgba(255,255,255,.07);text-align:center}
#projects h2{color:#e2e8f0;margin-bottom:40px}

.project{position:relative;max-width:900px;margin:0 auto 24px;overflow:hidden;background:#111827;border:1px solid rgba(255,255,255,.07);border-radius:10px;transition:.3s ease all}
.project:hover{border-color:rgba(0,212,255,.35);box-shadow:0 0 24px rgba(0,212,255,.2)}
.project-image{float:left}
.project-info{position:absolute;top:50%;transform:translateY(-50%);margin-left:300px;padding:20px}
.project-info h3{font-family:'Space Grotesk',sans-serif;font-size:1.2em;font-weight:600;color:#e2e8f0;margin:0 0 10px}
.project-info p{color:#94a3b8;margin:0 0 12px;font-size:.88em;line-height:1.65}
.project-info p strong{color:#e2e8f0}

.no-image .project-info{position:relative;margin:0;padding:24px;transform:none}

.project-links{margin-bottom:12px}
.project-links a{display:inline-block;margin-right:14px;font-size:.85em;font-weight:600;color:#00d4ff;transition:.2s ease all}
.project-links a i{margin-right:4px}
.project-links a:hover{color:#00aacc}

.project-tags{margin-top:14px}
.project-tags span{display:inline-block;margin:4px 4px 0 0;padding:3px 10px;font-size:.78em;background:rgba(124,58,237,.12);color:#b794f4;border:1px solid rgba(124,58,237,.25);border-radius:20px;font-family:'Space Grotesk',sans-serif;letter-spacing:.03em}

#more-projects{display:none}

/* ─── 10. Skills ──────────────────────────────────────────────────────────── */

#skills{padding:50px 15px;text-align:center;border-bottom:1px solid rgba(255,255,255,.07)}
#skills h2{color:#e2e8f0;margin-bottom:40px}

.skills-container{max-width:900px;margin:0 auto;display:flex;flex-wrap:wrap;gap:30px;justify-content:center;text-align:left}
.skill-category{min-width:200px;flex:1 1 200px;max-width:280px}
.skill-category-title{font-family:'Space Grotesk',sans-serif;font-size:.75em;font-weight:600;text-transform:uppercase;letter-spacing:.12em;color:#7c3aed;margin:0 0 12px;padding-bottom:6px;border-bottom:1px solid rgba(124,58,237,.25)}
.skill-category ul{display:flex;flex-wrap:wrap;gap:6px;margin:0;padding:0;list-style:none}
.skill-category li{display:inline-block;padding:4px 12px;font-size:.85em;color:#94a3b8;background:#111827;border:1px solid rgba(255,255,255,.07);border-radius:4px;cursor:default;transition:.2s ease all}
.skill-category li:hover{color:#00d4ff;border-color:rgba(0,212,255,.4);background:rgba(0,212,255,.06)}

/* ─── 11. Contact ─────────────────────────────────────────────────────────── */

#contact{padding:70px 15px;background:#0d1530;text-align:center}
#contact h2{margin:0 0 12px;color:#e2e8f0;font-weight:600;font-family:'Space Grotesk',sans-serif;font-size:2em}
#contact-tagline{color:#94a3b8;margin:0 0 36px;font-size:1.05em}
#contact-links{display:flex;flex-wrap:wrap;gap:14px;justify-content:center}
.contact-btn{display:inline-flex;align-items:center;gap:8px;padding:13px 28px;border-radius:30px;font-family:'Space Grotesk',sans-serif;font-weight:600;font-size:.95em;letter-spacing:.04em;transition:.25s ease all;text-decoration:none}
.contact-btn:not(.contact-btn-outline){background:#00d4ff;color:#080d1a;border:2px solid #00d4ff}
.contact-btn:not(.contact-btn-outline):hover{background:#00aacc;border-color:#00aacc;box-shadow:0 0 22px rgba(0,212,255,.45);color:#080d1a}
.contact-btn-outline{background:transparent;color:#00d4ff;border:2px solid rgba(0,212,255,.4)}
.contact-btn-outline:hover{border-color:#00d4ff;background:rgba(0,212,255,.07);box-shadow:0 0 16px rgba(0,212,255,.25);color:#00d4ff}

/* ─── 12. Media Queries ───────────────────────────────────────────────────── */

@media only screen and (max-width:750px){
    #experience-timeline:before,#experience-timeline:after{left:23px}
    .vtimeline-date{width:auto;text-align:left;position:relative;margin-bottom:10px;display:block;margin-left:70px}
    .vtimeline-icon{margin-left:0}
    .vtimeline-content{margin-left:70px}
}

@media only screen and (max-width:992px){
    #lead{height:auto;min-height:auto;max-height:none;padding:100px 15px}
    #lead-content{position:relative;transform:none;left:auto;top:auto}
    #lead-content h1{font-size:3em}
    #lead-content h2{font-size:1.4em}
    #about{text-align:center}
    #about p{text-align:left}
    .skills-container{gap:20px}
}

@media only screen and (max-width:768px){
    header{position:fixed;display:none;z-index:999;animation:none;bottom:0;height:100%}
    #mobile-menu-open,#mobile-menu-close{display:block}
    #menu{height:100%;overflow-y:auto;box-shadow:none;border-radius:0;width:100%}
    #menu li{display:block;margin-bottom:10px}
    #lead-content h1{font-size:2em}
    #lead-content h2{font-size:1.15em}
    #lead-content a{padding:10px 20px}
    #lead-down{display:none}
    .education-block h3,.education-block span{float:none}
    .project-image{display:none}
    .project-info{position:relative;margin:0;padding:24px 16px;top:auto;transform:none}
    .skills-container{flex-direction:column;align-items:flex-start;padding:0 10px}
    .skill-category{max-width:100%;flex:none;width:100%}
    footer{text-align:center}
    .social{text-align:center}
}

@media only screen and (max-width:480px){
    #lead-content h1{font-size:1.5em}
    #lead-content h2{font-size:1em}
    #lead-content a{font-size:.9em;padding:8px 16px}
    .publication-block{padding:16px}
}