/* ==========================================================================
   Rofaida Bouchama — Portfolio  |  style.css
   Adapted from the supplied theme.
   ========================================================================== */

/* ---------- Variables ---------- */
:root {
  --bg-canvas:       #FAF9F6;
  --bg-surface:      rgba(255,255,255,0.75);
  --bg-card:         #FFFFFF;
  --border-color:    rgba(197,168,128,0.25);
  --border-hover:    rgba(197,168,128,0.60);
  --text-primary:    #1E293B;
  --text-secondary:  #5C6B73;
  --text-muted:      #8E9A9F;
  --accent-gold:     #A9844C;
  --accent-gold-rgb: 169,132,76;
  --accent-light:    #EAE3D2;
  --shadow-sm:  0 4px 12px rgba(212,175,55,.08);
  --shadow-md:  0 10px 30px rgba(212,175,55,.15);
  --shadow-lg:  0 20px 50px rgba(212,175,55,.25);
  --glass-blur: blur(16px);
  --font-heading: 'Cormorant Garamond', Georgia, serif;
  --font-sans:    'Plus Jakarta Sans', system-ui, -apple-system, sans-serif;
  --font-arabic:  'Tajawal', system-ui, -apple-system, sans-serif;
  --transition-smooth: all .4s cubic-bezier(.16,1,.3,1);
  --transition-fast:   all .3s ease;
  --container-max: 1200px;
}

.dark-theme {
  --bg-canvas:       #090D16;
  --bg-surface:      rgba(13,20,35,0.70);
  --bg-card:         #0D1525;
  --border-color:    rgba(197,168,128,0.15);
  --border-hover:    rgba(197,168,128,0.50);
  --text-primary:    #F1F5F9;
  --text-secondary:  #94A3B8;
  --text-muted:      #64748B;
  --accent-gold:     #D4AF37;
  --accent-gold-rgb: 212,175,55;
  --accent-light:    #1E2638;
  --shadow-sm:  0 4px 12px rgba(212,175,55,.12);
  --shadow-md:  0 10px 30px rgba(212,175,55,.22);
  --shadow-lg:  0 20px 50px rgba(212,175,55,.35);
}

/* ---------- Reset ---------- */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;font-size:16px;-webkit-font-smoothing:antialiased}
body{background-color:var(--bg-canvas);color:var(--text-primary);font-family:var(--font-sans);line-height:1.7;overflow-x:hidden;transition:background-color .5s ease,color .3s ease}
html[dir="rtl"] body{font-family:var(--font-arabic)}
html[dir="rtl"] h1,html[dir="rtl"] h2,html[dir="rtl"] h3,html[dir="rtl"] h4{font-family:var(--font-arabic)}
::selection{background-color:rgba(var(--accent-gold-rgb),.2);color:var(--text-primary)}
a{color:var(--accent-gold);text-decoration:none;transition:var(--transition-fast)}
a:hover{color:var(--text-primary)}
ul{list-style:none}
img{max-width:100%;height:auto;display:block}
h1,h2,h3,h4,h5,h6{font-family:var(--font-heading);font-weight:600;line-height:1.25;color:var(--text-primary)}
p{font-size:1rem;font-weight:400;color:var(--text-secondary)}
strong{color:var(--text-primary);font-weight:600}
.container{width:100%;max-width:var(--container-max);margin:0 auto;padding:0 2rem}

/* ---------- Scroll Progress ---------- */
.scroll-progress{position:fixed;top:0;left:0;height:3px;z-index:9999;background:linear-gradient(90deg,var(--accent-gold),rgba(var(--accent-gold-rgb),.6));width:0%;transition:width .1s linear;box-shadow:0 0 8px rgba(var(--accent-gold-rgb),.5)}

/* ---------- Canvas ---------- */
#molecule-canvas{position:fixed;top:0;left:0;width:100%;height:100%;z-index:-1;pointer-events:none;opacity:.42;transition:opacity .5s ease}
.dark-theme #molecule-canvas{opacity:.22}

/* ---------- Header ---------- */
.header{position:fixed;top:0;left:0;width:100%;z-index:100;background-color:var(--bg-surface);border-bottom:1px solid var(--border-color);backdrop-filter:var(--glass-blur);-webkit-backdrop-filter:var(--glass-blur);transition:var(--transition-smooth)}
.header.scrolled{box-shadow:0 2px 20px rgba(var(--accent-gold-rgb),.12)}
.header-container{display:flex;justify-content:space-between;align-items:center;height:80px;max-width:var(--container-max);margin:0 auto;padding:0 2rem;transition:height .35s cubic-bezier(.16,1,.3,1)}
.header.scrolled .header-container{height:64px}
.logo{font-family:var(--font-heading);font-size:1.75rem;font-weight:700;color:var(--text-primary);letter-spacing:-.5px}
.logo-accent{color:var(--accent-gold);margin-right:2px}
.nav-list{display:flex;gap:2.25rem;position:relative}
.nav-link{font-size:.9rem;font-weight:500;color:var(--text-secondary);letter-spacing:.5px;position:relative;padding:.5rem 0;transition:color .35s cubic-bezier(.16,1,.3,1)}
.nav-link:hover,.nav-link.active{color:var(--accent-gold)}
.nav-link.active{font-weight:600}
.nav-underline{position:absolute;bottom:-1px;left:0;height:2px;background-color:var(--accent-gold);transition:left .35s cubic-bezier(.16,1,.3,1),width .35s cubic-bezier(.16,1,.3,1),opacity .3s ease;pointer-events:none;opacity:0}
.nav-actions{display:flex;align-items:center;gap:1rem}

/* Language switch */
.lang-switch{display:flex;align-items:center;border:1px solid var(--border-color);border-radius:50px;padding:3px;gap:2px}
.lang-btn{background:none;border:none;cursor:pointer;font-family:var(--font-sans);font-size:.72rem;font-weight:700;letter-spacing:.5px;color:var(--text-secondary);padding:6px 11px;border-radius:50px;transition:var(--transition-fast)}
.lang-btn:hover{color:var(--accent-gold)}
.lang-btn.active{background-color:var(--accent-gold);color:#FFF}

.theme-btn{background:none;border:1px solid var(--border-color);width:44px;height:44px;border-radius:50%;cursor:pointer;color:var(--text-secondary);font-size:1.1rem;display:flex;align-items:center;justify-content:center;transition:var(--transition-smooth);flex-shrink:0}
.theme-btn:hover{border-color:var(--accent-gold);color:var(--accent-gold);box-shadow:0 0 10px rgba(var(--accent-gold-rgb),.2)}
.theme-btn .sun-icon{display:none}
.dark-theme .theme-btn .moon-icon{display:none}
.dark-theme .theme-btn .sun-icon{display:block}
.mobile-nav-toggle{display:none;background:none;border:none;cursor:pointer;padding:.5rem}
.mobile-nav-toggle .bar{display:block;width:25px;height:2px;margin:5px auto;background-color:var(--text-primary);transition:var(--transition-smooth)}

/* ---------- Back to top ---------- */
.back-to-top{position:fixed;bottom:2rem;right:2rem;z-index:999;width:48px;height:48px;border-radius:50%;background-color:var(--accent-gold);color:#fff;border:none;cursor:pointer;font-size:1.1rem;display:flex;align-items:center;justify-content:center;box-shadow:0 4px 20px rgba(var(--accent-gold-rgb),.4);opacity:0;transform:translateY(20px);transition:opacity .3s ease,transform .3s ease,box-shadow .3s ease;pointer-events:none}
.back-to-top.visible{opacity:1;transform:translateY(0);pointer-events:auto}
.back-to-top:hover{box-shadow:0 6px 28px rgba(var(--accent-gold-rgb),.6);transform:translateY(-3px)}
html[dir="rtl"] .back-to-top{right:auto;left:2rem}

/* ---------- Cursor Glow ---------- */
.cursor-glow{position:fixed;top:0;left:0;width:380px;height:380px;border-radius:50%;background:radial-gradient(circle,rgba(var(--accent-gold-rgb),.16) 0%,rgba(var(--accent-gold-rgb),.07) 35%,rgba(var(--accent-gold-rgb),0) 70%);transform:translate(-50%,-50%);pointer-events:none;z-index:0;opacity:0;transition:opacity .4s ease,width .5s cubic-bezier(.16,1,.3,1),height .5s cubic-bezier(.16,1,.3,1);will-change:transform}
.cursor-glow.active{opacity:1}
.cursor-glow.cursor-glow--big{width:560px;height:560px;background:radial-gradient(circle,rgba(var(--accent-gold-rgb),.22) 0%,rgba(var(--accent-gold-rgb),.09) 35%,rgba(var(--accent-gold-rgb),0) 70%)}
@media (max-width:900px),(hover:none){.cursor-glow{display:none}}

/* ---------- Sections ---------- */
section{padding:100px 0;position:relative}
.section-header{text-align:center;margin-bottom:70px;max-width:650px;margin-left:auto;margin-right:auto}
.subtitle{font-family:var(--font-sans);font-size:.85rem;font-weight:600;text-transform:uppercase;letter-spacing:2px;color:var(--accent-gold);display:inline-block;margin-bottom:10px}
html[dir="rtl"] .subtitle{text-transform:none;letter-spacing:.5px}
.section-title{font-size:2.75rem;font-weight:400;position:relative;padding-bottom:20px}
.section-title::after{content:'';position:absolute;bottom:0;left:50%;transform:translateX(-50%);width:60px;height:1px;background-color:var(--accent-gold)}

/* ---------- Buttons ---------- */
.btn{display:inline-flex;align-items:center;gap:8px;padding:.85rem 1.85rem;border-radius:4px;font-family:var(--font-sans);font-size:.9rem;font-weight:600;letter-spacing:.5px;cursor:pointer;transition:var(--transition-smooth);text-decoration:none}
html[dir="rtl"] .btn{font-family:var(--font-arabic);letter-spacing:0}
.btn-primary{background-color:var(--accent-gold);color:#FFF;border:1px solid var(--accent-gold)}
.btn-primary:hover{background-color:transparent;color:var(--accent-gold);box-shadow:0 8px 25px rgba(var(--accent-gold-rgb),.2);transform:translateY(-2px)}
.btn-secondary{background-color:transparent;color:var(--text-primary);border:1px solid var(--border-color)}
.btn-secondary:hover{border-color:var(--accent-gold);color:var(--accent-gold);transform:translateY(-2px)}
.btn-outline-cv{background-color:transparent;color:var(--accent-gold);border:1.5px solid var(--accent-gold)}
.btn-outline-cv:hover{background-color:var(--accent-gold);color:#fff;transform:translateY(-2px);box-shadow:0 8px 25px rgba(var(--accent-gold-rgb),.25)}
.badge{display:inline-block;padding:.4rem 1rem;background-color:var(--accent-light);color:var(--accent-gold);font-size:.75rem;font-weight:700;letter-spacing:1px;text-transform:uppercase;border-radius:50px;border:1px solid var(--border-color);margin-bottom:20px}
html[dir="rtl"] .badge{text-transform:none}

/* ---------- Hero ---------- */
.hero-section{padding-top:180px;padding-bottom:120px;min-height:100vh;display:flex;align-items:center}
.hero-container{display:grid;grid-template-columns:1.1fr .9fr;gap:4rem;align-items:center}
.hero-title{font-size:4.5rem;line-height:1.1;margin-bottom:20px;font-weight:300}
.hero-title .highlight{font-weight:700;color:var(--accent-gold)}
.hero-subtitle{font-family:var(--font-sans);font-size:1.35rem;font-weight:500;color:var(--text-secondary);margin-bottom:25px;line-height:1.4}
html[dir="rtl"] .hero-subtitle{font-family:var(--font-arabic)}
.hero-description{font-size:1.1rem;margin-bottom:35px;max-width:580px}
.hero-keywords{display:flex;flex-wrap:wrap;gap:10px;margin-bottom:40px}
.hero-keywords span{font-size:.8rem;font-weight:500;color:var(--text-muted);border:1px solid var(--border-color);padding:4px 12px;border-radius:50px;background-color:var(--bg-surface);direction:ltr;display:inline-block}
.hero-ctas{display:flex;gap:15px;flex-wrap:wrap}
.hero-visual{position:relative;display:flex;justify-content:center;align-items:center}
.image-wrapper{position:relative;width:380px;height:380px;border-radius:50%;z-index:1}
.image-wrapper .glass-bg{position:absolute;top:-15px;left:-15px;width:calc(100% + 30px);height:calc(100% + 30px);border-radius:50%;border:1px solid var(--border-color);background-color:var(--bg-surface);backdrop-filter:var(--glass-blur);-webkit-backdrop-filter:var(--glass-blur);z-index:-1}
.image-wrapper::before{content:'';position:absolute;top:0;left:0;width:100%;height:100%;border-radius:50%;border:2px solid var(--accent-gold);opacity:.5;z-index:2;pointer-events:none}
.hero-avatar{width:100%;height:100%;border-radius:50%;background:linear-gradient(135deg,var(--accent-light),var(--bg-card));display:flex;align-items:center;justify-content:center;font-family:var(--font-heading);font-size:6rem;font-weight:700;color:var(--accent-gold);transition:var(--transition-smooth);border:1px solid var(--border-color)}
.hero-avatar:hover{transform:scale(1.02)}
.metric-badge{position:absolute;bottom:20px;right:-10px;background-color:var(--bg-surface);border:1px solid var(--accent-gold);padding:15px 20px;border-radius:12px;backdrop-filter:var(--glass-blur);-webkit-backdrop-filter:var(--glass-blur);box-shadow:var(--shadow-md);display:flex;flex-direction:column;align-items:center;z-index:5;animation:badgeFloat 3.6s ease-in-out infinite}
html[dir="rtl"] .metric-badge{right:auto;left:-10px}
.metric-badge .number{font-family:var(--font-heading);font-size:2.2rem;font-weight:700;color:var(--accent-gold);line-height:1;font-variant-numeric:tabular-nums}
.metric-badge .text{font-size:.75rem;font-weight:600;text-transform:uppercase;letter-spacing:1px;color:var(--text-secondary);margin-top:5px;white-space:nowrap}
html[dir="rtl"] .metric-badge .text{text-transform:none}

@keyframes badgeFloat{
  0%,100%{transform:translateY(0)}
  50%{transform:translateY(-10px)}
}

.image-wrapper::after{content:'';position:absolute;top:0;left:0;width:100%;height:100%;border-radius:50%;border:2px solid var(--accent-gold);z-index:0;pointer-events:none;animation:pulseRing 2.8s cubic-bezier(.4,0,.2,1) infinite}
@keyframes pulseRing{
  0%{transform:scale(1);opacity:.55}
  70%{transform:scale(1.18);opacity:0}
  100%{transform:scale(1.18);opacity:0}
}
@media (prefers-reduced-motion:reduce){
  .image-wrapper::after{animation:none}
  .metric-badge{animation:none}
}

/* ---------- About ---------- */
.about-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:5rem;align-items:start}
.about-text .lead{font-size:1.25rem;color:var(--text-primary);margin-bottom:20px;font-weight:300}
.about-text p{margin-bottom:20px}
.about-metrics{display:flex;gap:3rem;margin-top:40px;border-top:1px solid var(--border-color);padding-top:30px}
.metric-number{font-family:var(--font-heading);font-size:3rem;font-weight:700;color:var(--accent-gold);line-height:1;font-variant-numeric:tabular-nums}
.metric-label{font-size:.8rem;font-weight:600;text-transform:uppercase;letter-spacing:1px;color:var(--text-secondary);margin-top:8px}
html[dir="rtl"] .metric-label{text-transform:none}
.details-card{background-color:var(--bg-card);border:1px solid var(--border-color);border-radius:8px;padding:40px;box-shadow:var(--shadow-sm);position:relative;overflow:hidden}
.details-card::before{content:'';position:absolute;top:0;left:0;width:4px;height:100%;background-color:var(--accent-gold)}
html[dir="rtl"] .details-card::before{left:auto;right:0}
.details-card .card-title{font-size:1.75rem;margin-bottom:30px;font-weight:400}
.values-list li{display:flex;gap:1.5rem;margin-bottom:25px}
.values-list li:last-child{margin-bottom:0}
.value-icon{font-size:1.35rem;color:var(--accent-gold);margin-top:5px}
.values-list h4{font-family:var(--font-sans);font-size:1.05rem;font-weight:600;margin-bottom:5px}
.values-list p{font-size:.9rem}

/* ---------- Focus / Research cards ---------- */
.research-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:2rem}
.research-card{background-color:var(--bg-card);border:1px solid var(--border-color);border-radius:12px;overflow:hidden;transition:var(--transition-smooth);box-shadow:var(--shadow-md);display:flex;flex-direction:column;padding-top:40px}
.research-card:hover{transform:translateY(-8px);border-color:var(--accent-gold);box-shadow:var(--shadow-lg)}
.focus-icon-wrapper{width:64px;height:64px;border-radius:16px;background-color:var(--accent-light);color:var(--accent-gold);display:flex;align-items:center;justify-content:center;font-size:1.6rem;margin:0 auto 10px}
.research-card:hover .focus-icon-wrapper{background-color:var(--accent-gold);color:#fff}
.research-card-content{padding:20px 30px 30px;flex-grow:1;text-align:center}
.research-card h3{font-size:1.45rem;margin-bottom:12px;font-weight:500}
.research-card p{font-size:.92rem}

/* ---------- Projects (publications layout reused) ---------- */
.pub-filter{display:flex;justify-content:center;align-items:center;margin-bottom:40px;flex-wrap:wrap;gap:20px;border-bottom:1px solid var(--border-color);padding-bottom:20px}
.filter-btns{display:flex;gap:4px;flex-wrap:wrap}
.filter-btn{background:none;border:none;font-family:var(--font-sans);font-size:.9rem;font-weight:600;color:var(--text-secondary);cursor:pointer;padding:8px 16px;border-radius:4px;transition:var(--transition-fast)}
.filter-btn:hover{color:var(--accent-gold)}
.filter-btn.active{background-color:var(--accent-gold);color:#FFF}
.publications-list{display:flex;flex-direction:column;gap:1.5rem}
.pub-card{background-color:var(--bg-card);border:1px solid var(--border-color);border-radius:6px;padding:30px 40px;display:grid;grid-template-columns:auto 1fr auto;gap:2.5rem;align-items:center;transition:var(--transition-smooth);box-shadow:var(--shadow-sm)}
.pub-card:hover{border-color:var(--accent-gold);transform:translateX(5px);box-shadow:var(--shadow-md)}
html[dir="rtl"] .pub-card:hover{transform:translateX(-5px)}
.pub-year{font-family:var(--font-heading);font-size:2rem;font-weight:700;color:var(--text-muted);border-right:1px solid var(--border-color);padding-right:2.5rem;line-height:1;min-width:90px;text-align:center}
html[dir="rtl"] .pub-year{border-right:none;border-left:1px solid var(--border-color);padding-right:0;padding-left:2.5rem}
.pub-card:hover .pub-year{color:var(--accent-gold)}
.pub-journal{font-size:.8rem;text-transform:uppercase;letter-spacing:1px;font-weight:700;color:var(--accent-gold);margin-bottom:8px;display:inline-flex;align-items:center;gap:6px}
html[dir="rtl"] .pub-journal{text-transform:none}
.pub-title{font-size:1.45rem;font-weight:400;margin-bottom:8px;line-height:1.35}
.pub-authors{font-size:.92rem;color:var(--text-secondary);margin-bottom:12px}
.pub-meta{display:flex;gap:20px;flex-wrap:wrap}
.pub-doi,.pub-citation{font-size:.78rem;color:var(--text-muted);display:inline-flex;align-items:center;gap:5px}
.pub-btn{white-space:nowrap}
.pub-btn:hover{transform:translateY(-2px);box-shadow:0 5px 15px rgba(var(--accent-gold-rgb),.2)}

/* ---------- Experience ---------- */
.experience-timeline{position:relative;max-width:900px;margin:0 auto;padding:20px 0}
.experience-timeline::before{content:'';position:absolute;top:0;bottom:0;left:120px;width:1px;background-color:var(--border-color)}
html[dir="rtl"] .experience-timeline::before{left:auto;right:120px}
.timeline-item{position:relative;margin-bottom:50px;display:grid;grid-template-columns:100px 1fr;gap:40px}
html[dir="rtl"] .timeline-item{grid-template-columns:1fr 100px}
html[dir="rtl"] .timeline-item{direction:rtl}
.timeline-item:last-child{margin-bottom:0}
.timeline-dot{position:absolute;left:120px;top:25px;transform:translateX(-50%);width:9px;height:9px;border-radius:50%;background-color:var(--accent-gold);border:2px solid var(--bg-canvas);z-index:2;transition:var(--transition-fast)}
html[dir="rtl"] .timeline-dot{left:auto;right:120px;transform:translateX(50%)}
.timeline-item:hover .timeline-dot{transform:translateX(-50%) scale(1.5);box-shadow:0 0 10px var(--accent-gold)}
html[dir="rtl"] .timeline-item:hover .timeline-dot{transform:translateX(50%) scale(1.5)}
.timeline-date{font-size:.85rem;font-weight:700;text-align:right;color:var(--text-muted);padding-top:16px}
html[dir="rtl"] .timeline-date{text-align:left;order:2}
.timeline-card{background-color:var(--bg-card);border:1px solid var(--border-color);border-radius:6px;padding:30px;box-shadow:var(--shadow-sm);transition:var(--transition-smooth);position:relative}
html[dir="rtl"] .timeline-card{order:1}
.timeline-card:hover{border-color:var(--accent-gold);box-shadow:var(--shadow-md)}
.timeline-card .location{position:absolute;top:30px;right:30px;font-size:.8rem;color:var(--text-muted);display:inline-flex;align-items:center;gap:5px}
html[dir="rtl"] .timeline-card .location{right:auto;left:30px}
.timeline-card h3{font-size:1.5rem;font-weight:400;margin-bottom:5px}
.timeline-card h4{font-family:var(--font-sans);font-size:.95rem;font-weight:600;color:var(--accent-gold);margin-bottom:15px}
html[dir="rtl"] .timeline-card h4{font-family:var(--font-arabic)}
.timeline-project,.timeline-desc{font-size:.92rem;margin-bottom:10px}
.supervisor{font-size:.88rem;color:var(--text-secondary);margin-bottom:15px}
.experience-tags{display:flex;flex-wrap:wrap;gap:8px;margin-top:10px}
.experience-tags span{font-size:.75rem;font-weight:500;background-color:var(--bg-canvas);color:var(--text-secondary);border:1px solid var(--border-color);padding:3px 10px;border-radius:4px}
.card-link{font-size:.85rem;font-weight:600;display:inline-flex;align-items:center;gap:5px;margin-top:10px}

/* ---------- Education ---------- */
.education-timeline{max-width:900px;margin:0 auto;display:flex;flex-direction:column;gap:2rem}
.edu-card{background-color:var(--bg-card);border:1px solid var(--border-color);border-radius:6px;padding:30px 40px;display:grid;grid-template-columns:120px 1fr;gap:2rem;align-items:center;transition:var(--transition-smooth);box-shadow:var(--shadow-sm)}
.edu-card:hover{border-color:var(--accent-gold);box-shadow:var(--shadow-md);transform:translateY(-2px)}
.edu-date{font-family:var(--font-heading);font-size:1.8rem;font-weight:700;color:var(--accent-gold);border-right:1px solid var(--border-color);padding-right:2rem;text-align:center}
html[dir="rtl"] .edu-date{border-right:none;border-left:1px solid var(--border-color);padding-right:0;padding-left:2rem}
.edu-info h3{font-size:1.35rem;font-weight:600;margin-bottom:5px}
.edu-title{font-family:var(--font-sans);font-size:1rem;font-weight:500;color:var(--text-secondary);font-style:italic;margin-bottom:8px}
html[dir="rtl"] .edu-title{font-style:normal}
.edu-details{font-size:.88rem;color:var(--text-muted)}

/* ---------- Skills ---------- */
.skills-section{position:relative}
.skills-section::before{content:'';position:absolute;inset:0;background-image:radial-gradient(circle,var(--border-color) 1px,transparent 1px);background-size:28px 28px;opacity:.35;pointer-events:none;z-index:0}
.skills-section .container{position:relative;z-index:1}
.skills-grid{display:grid;grid-template-columns:1.1fr .9fr 1fr;gap:2rem;align-items:stretch}
.skills-card{background-color:var(--bg-card);border:1px solid var(--border-color);border-radius:16px;padding:40px 38px;box-shadow:0 1px 3px rgba(0,0,0,.03),0 4px 16px rgba(0,0,0,.03);transition:transform 320ms cubic-bezier(.16,1,.3,1),box-shadow 320ms cubic-bezier(.16,1,.3,1);display:flex;flex-direction:column}
.skills-card:hover{transform:translateY(-4px);box-shadow:0 14px 32px rgba(var(--accent-gold-rgb),.09),0 4px 12px rgba(0,0,0,.04)}
.skills-card h3{font-family:var(--font-heading);font-size:1.7rem;font-weight:500;letter-spacing:.01em;margin-bottom:36px;border-bottom:1px solid var(--border-color);padding-bottom:20px;display:flex;align-items:center;gap:13px}
html[dir="rtl"] .skills-card h3{font-family:var(--font-arabic)}
.card-header-icon{color:var(--accent-gold);font-size:1.05rem}
.skills-list{display:flex;flex-direction:column;gap:22px}
.skills-list li{font-size:.93rem;color:var(--text-secondary);position:relative;padding-left:22px;line-height:1.5}
html[dir="rtl"] .skills-list li{padding-left:0;padding-right:22px}
.skills-list li::before{content:'•';color:var(--accent-gold);position:absolute;left:0;font-weight:bold}
html[dir="rtl"] .skills-list li::before{left:auto;right:0}
.skills-list li strong{display:block;font-weight:600;color:var(--text-primary);font-size:.98rem;margin-bottom:5px}
.skill-detail{display:block;font-size:.78rem;font-weight:400;color:var(--text-muted);letter-spacing:.04em;direction:ltr;text-align:inherit}
.skills-tags{display:flex;flex-wrap:wrap;gap:14px;align-content:flex-start;flex:1}
.skills-tags span{font-size:.84rem;font-weight:500;background-color:var(--bg-canvas);color:var(--text-primary);border:1px solid var(--border-color);padding:10px 20px;border-radius:10px;transition:transform 300ms ease,border-color 300ms ease,color 300ms ease,box-shadow 300ms ease;cursor:default}
.skills-tags span:hover{border-color:var(--accent-gold);color:var(--accent-gold);transform:translateY(-2px);box-shadow:0 6px 14px rgba(var(--accent-gold-rgb),.12)}
.lang-meters{display:flex;flex-direction:column;gap:2.1rem;flex:1;justify-content:center}
.lang-item{display:flex;flex-direction:column;gap:9px}
.lang-name{font-size:.92rem;font-weight:600;color:var(--text-primary)}
.meter-bar{width:100%;height:5px;background-color:var(--border-color);border-radius:10px;overflow:hidden}
.meter-bar span{display:block;height:100%;width:0;background-color:var(--accent-gold);border-radius:10px;transition:width 1.1s cubic-bezier(.16,1,.3,1)}
.lang-level{font-size:.75rem;color:var(--text-muted);text-align:right;letter-spacing:.02em}
html[dir="rtl"] .lang-level{text-align:left}

/* ---------- Certifications (conferences layout reused) ---------- */
.conferences-container{max-width:900px;margin:0 auto;border-left:1px solid var(--border-color);padding-left:30px;display:flex;flex-direction:column;gap:2.75rem}
html[dir="rtl"] .conferences-container{border-left:none;border-right:1px solid var(--border-color);padding-left:0;padding-right:30px}
.conf-item{position:relative}
.conf-item::before{content:'';position:absolute;left:-35px;top:10px;width:9px;height:9px;background-color:var(--bg-canvas);border:2px solid var(--accent-gold);border-radius:50%}
html[dir="rtl"] .conf-item::before{left:auto;right:-35px}
.conf-meta{display:flex;gap:14px;margin-bottom:10px;align-items:baseline}
.conf-year{font-size:.8rem;font-weight:600;letter-spacing:.04em;color:var(--accent-gold)}
.conf-loc{font-size:.72rem;font-weight:600;text-transform:uppercase;letter-spacing:.06em;color:var(--text-muted)}
html[dir="rtl"] .conf-loc{text-transform:none}
.conf-details h3{font-family:var(--font-heading);font-size:1.45rem;font-weight:500;line-height:1.35}
html[dir="rtl"] .conf-details h3{font-family:var(--font-arabic)}
.conf-date,.conf-desc{font-size:.85rem;color:var(--text-muted);margin-top:6px}
.conf-desc{font-style:italic}

/* ---------- Contact ---------- */
.contact-grid{display:grid;grid-template-columns:.9fr 1.1fr;gap:5rem;align-items:start}
.contact-info{display:flex;flex-direction:column;gap:2rem}
.info-item{display:flex;gap:1.5rem;align-items:center}
.info-icon{width:60px;height:60px;border-radius:50%;background-color:var(--bg-card);border:1px solid var(--border-color);display:flex;align-items:center;justify-content:center;font-size:1.35rem;color:var(--accent-gold);box-shadow:var(--shadow-sm);flex-shrink:0;transition:var(--transition-smooth)}
.info-item:hover .info-icon{border-color:var(--accent-gold);background-color:var(--accent-gold);color:#FFF;box-shadow:0 5px 15px rgba(var(--accent-gold-rgb),.3)}
.info-item h3{font-family:var(--font-sans);font-size:.85rem;font-weight:600;text-transform:uppercase;letter-spacing:1px;color:var(--text-muted);margin-bottom:4px}
html[dir="rtl"] .info-item h3{text-transform:none;font-family:var(--font-arabic)}
.info-item p{font-size:1.1rem;font-weight:500;color:var(--text-primary)}
.info-item a{color:var(--text-primary)}
.info-item a:hover{color:var(--accent-gold)}
.contact-form{background-color:var(--bg-surface);border:1px solid var(--border-color);border-radius:14px;padding:45px;box-shadow:0 1px 3px rgba(0,0,0,.03),0 8px 24px rgba(0,0,0,.04);backdrop-filter:var(--glass-blur);-webkit-backdrop-filter:var(--glass-blur)}
.form-title{font-size:1.75rem;margin-bottom:30px;font-weight:400}
.form-group{margin-bottom:20px}
.form-group label{display:block;font-size:.8rem;font-weight:600;text-transform:uppercase;letter-spacing:1px;margin-bottom:8px;color:var(--text-secondary)}
html[dir="rtl"] .form-group label{text-transform:none;font-family:var(--font-arabic)}
.form-group input,.form-group textarea{width:100%;padding:12px 18px;border:1px solid var(--border-color);background-color:var(--bg-card);border-radius:4px;font-family:var(--font-sans);font-size:.95rem;color:var(--text-primary);transition:var(--transition-smooth)}
html[dir="rtl"] .form-group input,html[dir="rtl"] .form-group textarea{font-family:var(--font-arabic)}
.form-group input:focus,.form-group textarea:focus{outline:none;border-color:var(--accent-gold);box-shadow:0 0 10px rgba(var(--accent-gold-rgb),.15)}
.form-submit{width:100%;justify-content:center;border:none}
.form-feedback{margin-top:18px;font-size:.88rem;line-height:1.5;text-align:center;border-radius:6px;transition:var(--transition-smooth);max-height:0;overflow:hidden;opacity:0;padding:0 16px}
.form-feedback--success,.form-feedback--error{max-height:200px;opacity:1;padding:14px 16px;border:1px solid var(--border-color)}
.form-feedback--success{color:var(--accent-gold);background-color:rgba(var(--accent-gold-rgb),.06);border-color:rgba(var(--accent-gold-rgb),.3)}
.form-feedback--error{color:#B45252;background-color:rgba(180,82,82,.06);border-color:rgba(180,82,82,.25)}

/* ---------- Footer ---------- */
.footer-bar{border-top:1px solid var(--border-color);padding:20px 0;background-color:var(--bg-canvas)}
.footer-container{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:.6rem;text-align:center}
.footer-bar p{font-size:.82rem;color:var(--text-muted)}
.footer-links{display:flex;gap:1.25rem;align-items:center;justify-content:center}
.footer-links a{color:var(--text-muted);font-size:1.1rem;transition:var(--transition-fast)}
.footer-links a:hover{color:var(--accent-gold);transform:translateY(-2px)}
.footer-quick-links{display:flex;gap:1.25rem;justify-content:center;flex-wrap:wrap}
.footer-quick-links a{font-size:.8rem;color:var(--text-muted);font-weight:500}
.footer-quick-links a:hover{color:var(--accent-gold)}

/* ---------- Toast ---------- */
.toast-notification{position:fixed;bottom:2rem;left:50%;transform:translateX(-50%) translateY(100px);background:var(--bg-card);border:1px solid var(--accent-gold);border-radius:12px;padding:1.2rem 2rem;box-shadow:0 20px 50px rgba(var(--accent-gold-rgb),.25);display:flex;align-items:center;gap:1rem;z-index:9999;opacity:0;transition:all .4s cubic-bezier(.16,1,.3,1);max-width:480px;width:90%}
.toast-notification.show{opacity:1;transform:translateX(-50%) translateY(0)}
.toast-icon{font-size:1.5rem;color:var(--accent-gold)}
.toast-content h4{font-family:var(--font-sans);font-size:.95rem;font-weight:700;color:var(--text-primary);margin-bottom:3px}
.toast-content p{font-size:.82rem;color:var(--text-secondary)}

/* ---------- Scroll Reveal ---------- */
.scroll-reveal{opacity:0;transform:translateY(30px);transition:opacity .8s cubic-bezier(.16,1,.3,1),transform .8s cubic-bezier(.16,1,.3,1)}
.scroll-reveal.revealed{opacity:1;transform:translateY(0)}
.delay-100{transition-delay:100ms}
.delay-200{transition-delay:200ms}
.delay-300{transition-delay:300ms}
.delay-400{transition-delay:400ms}
.delay-500{transition-delay:500ms}
.delay-600{transition-delay:600ms}
.delay-700{transition-delay:700ms}

/* ======================== RESPONSIVE ======================== */
@media (max-width:1024px){
  .hero-title{font-size:3.5rem}
  .about-grid,.contact-grid{gap:3rem}
  .skills-grid{grid-template-columns:1fr 1fr}
}

@media (max-width:768px){
  section{padding:70px 0}
  .section-title{font-size:2.2rem}
  .skills-card{padding:32px 28px}
  .mobile-nav-toggle{display:block;z-index:101}
  .mobile-nav-toggle.active .bar:nth-child(2){opacity:0}
  .mobile-nav-toggle.active .bar:nth-child(1){transform:translateY(7px) rotate(45deg)}
  .mobile-nav-toggle.active .bar:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
  .nav{position:fixed;top:0;right:-100%;width:80%;max-width:320px;height:100vh;background-color:var(--bg-canvas);border-left:1px solid var(--border-color);padding:100px 40px;transition:var(--transition-smooth);box-shadow:var(--shadow-lg)}
  html[dir="rtl"] .nav{right:auto;left:-100%;border-left:none;border-right:1px solid var(--border-color)}
  .nav.active{right:0}
  html[dir="rtl"] .nav.active{right:auto;left:0}
  .nav-list{flex-direction:column;gap:2rem}
  .nav-link{font-size:1.1rem}
  .nav-link.active{border-left:2px solid var(--accent-gold);padding-left:10px}
  .nav-underline{display:none!important}
  .hero-container{grid-template-columns:1fr;gap:3rem;text-align:center}
  .hero-description,.hero-keywords,.hero-ctas{margin-left:auto;margin-right:auto}
  .hero-keywords,.hero-ctas{justify-content:center}
  .hero-visual{order:-1}
  .about-grid,.contact-grid{grid-template-columns:1fr;gap:3.5rem}
  .about-metrics{justify-content:center;gap:2rem}
  .research-grid{grid-template-columns:1fr 1fr}
  .pub-card{grid-template-columns:1fr;gap:1.5rem;text-align:center}
  .pub-year{border-right:none;border-bottom:1px solid var(--border-color);padding-right:0;padding-bottom:1rem;width:100%}
  html[dir="rtl"] .pub-year{border-left:none;border-bottom:1px solid var(--border-color);padding-left:0}
  .pub-meta{justify-content:center}
  .timeline-item{grid-template-columns:1fr;gap:1.5rem}
  html[dir="rtl"] .timeline-item{grid-template-columns:1fr}
  .timeline-date{text-align:left;padding-top:0}
  .experience-timeline::before{left:20px}
  html[dir="rtl"] .experience-timeline::before{left:auto;right:20px}
  .timeline-dot{left:20px;top:-12px}
  html[dir="rtl"] .timeline-dot{left:auto;right:20px}
  .timeline-card{margin-left:20px}
  html[dir="rtl"] .timeline-card{margin-left:0;margin-right:20px}
  .timeline-card .location{position:static;display:inline-flex;margin-bottom:10px}
  .edu-card{grid-template-columns:1fr;gap:1rem;text-align:center}
  .edu-date{border-right:none;border-bottom:1px solid var(--border-color);padding-right:0;padding-bottom:.5rem}
}

@media (max-width:580px){
  .research-grid,.skills-grid{grid-template-columns:1fr}
  .image-wrapper{width:280px;height:280px}
  .hero-avatar{font-size:4.5rem}
  .contact-form{padding:30px 20px}
  .footer-bar{padding:18px 0}
  .hero-ctas{flex-direction:column;align-items:center}
  .lang-switch{order:-1}
}