:root {
  --bg: #0f172a; --bg-alt: #1e293b; --surface: #1e293b;
  --text: #f1f5f9; --muted: #94a3b8; --dim: #64748b;
  --line: #334155; --accent: #38bdf8; --accent2: #a78bfa; --accent3: #34d399;
  --glow: rgba(56,189,248,0.12);
  --gradient: linear-gradient(135deg, #38bdf8, #a78bfa);
  --shadow: 0 4px 16px rgba(0,0,0,0.25);
  --radius: 12px; --tr: 0.3s cubic-bezier(0.4,0,0.2,1);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, sans-serif;
}
[data-theme="light"] {
  --bg: #f8fafc; --bg-alt: #ffffff; --surface: #ffffff;
  --text: #0f172a; --muted: #475569; --dim: #94a3b8;
  --line: #e2e8f0; --accent: #0284c7; --accent2: #7c3aed; --accent3: #059669;
  --glow: rgba(2,132,199,0.08); --shadow: 0 4px 16px rgba(0,0,0,0.06);
}
*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:72px}
body{background:var(--bg);color:var(--text);line-height:1.6;overflow-x:hidden}
::-webkit-scrollbar{width:6px}
::-webkit-scrollbar-thumb{background:var(--line);border-radius:3px}

.screen-only{}
.print-only{display:none!important}

/* NAV */
.nav{position:fixed;top:0;left:0;right:0;z-index:100;background:rgba(15,23,42,0.8);backdrop-filter:blur(16px);border-bottom:1px solid var(--line);transition:var(--tr)}
[data-theme="light"] .nav{background:rgba(248,250,252,0.8)}
.nav-inner{width:100%;max-width:1100px;margin:0 auto;padding:0 1.5rem;display:flex;align-items:center;justify-content:space-between;height:58px}
.nav-logo{font-weight:800;font-size:1.1rem;text-decoration:none;background:var(--gradient);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.nav-links{display:flex;gap:0.2rem;list-style:none}
.nav-links a{text-decoration:none;color:var(--muted);padding:0.4rem 0.8rem;border-radius:6px;font-size:0.82rem;font-weight:500;transition:var(--tr)}
.nav-links a:hover,.nav-links a.active{color:var(--accent);background:var(--glow)}
.nav-actions{display:flex;align-items:center;gap:0.5rem}
.theme-btn{background:var(--surface);border:1px solid var(--line);color:var(--muted);width:36px;height:36px;border-radius:50%;cursor:pointer;display:flex;align-items:center;justify-content:center;font-size:1rem;transition:var(--tr)}
.theme-btn:hover{border-color:var(--accent);color:var(--accent)}
.hamburger{display:none;background:none;border:none;color:var(--text);cursor:pointer;padding:0.4rem}

/* HERO */
.hero{min-height:100vh;display:flex;align-items:center;justify-content:center;position:relative;overflow:hidden;padding:6rem 1.5rem 4rem;text-align:center}
.hero-bg{position:absolute;inset:0;pointer-events:none}
.hero-bg::before{content:"";position:absolute;width:550px;height:550px;background:radial-gradient(circle,rgba(56,189,248,0.07) 0%,transparent 70%);top:-180px;right:-180px;animation:drift 20s ease-in-out infinite}
.hero-bg::after{content:"";position:absolute;width:450px;height:450px;background:radial-gradient(circle,rgba(167,139,250,0.05) 0%,transparent 70%);bottom:-120px;left:-120px;animation:drift 25s ease-in-out infinite reverse}
@keyframes drift{0%,100%{transform:translate(0,0)}50%{transform:translate(25px,-25px)}}
.hero-content{max-width:700px;position:relative;z-index:1}
.hero-badge{display:inline-flex;align-items:center;gap:0.5rem;padding:0.4rem 1.1rem;background:var(--glow);border:1px solid rgba(56,189,248,0.2);border-radius:999px;color:var(--accent);font-size:0.82rem;font-weight:500;margin:0 0 1.5rem}
.pulse-dot{width:7px;height:7px;background:var(--accent3);border-radius:50%;animation:pulse 2s ease-in-out infinite}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:0.35}}
.hero h1{font-size:clamp(2.5rem,6vw,3.5rem);font-weight:800;line-height:1.1;margin-bottom:1rem}
.hero-subtitle{font-size:1.1rem;color:var(--muted);max-width:560px;margin:0 auto 2rem;line-height:1.5}
.hero-cta{display:flex;gap:0.75rem;justify-content:center;flex-wrap:wrap}
.btn{display:inline-flex;align-items:center;gap:0.4rem;padding:0.65rem 1.4rem;border-radius:8px;font-size:0.88rem;font-weight:600;text-decoration:none;border:none;font-family:inherit;cursor:pointer;transition:var(--tr)}
.btn-primary{background:var(--gradient);color:#fff;box-shadow:0 4px 14px rgba(56,189,248,0.25)}
.btn-primary:hover{transform:translateY(-2px);box-shadow:0 6px 18px rgba(56,189,248,0.3)}
.btn-outline{background:transparent;color:var(--text);border:1px solid var(--line)}
.btn-outline:hover{border-color:var(--accent);color:var(--accent)}

/* HERO SOCIALS */
.hero-socials{display:flex;justify-content:center;gap:0.6rem;margin-top:1.25rem}
.social-link{display:flex;align-items:center;justify-content:center;width:40px;height:40px;border-radius:50%;background:var(--surface);border:1px solid var(--line);color:var(--muted);transition:var(--tr)}
.social-link:hover{border-color:var(--accent);color:var(--accent);transform:translateY(-2px);box-shadow:var(--shadow)}

/* AVATAR */
.avatar{display:block;width:150px;height:150px;border-radius:50%;object-fit:cover;object-position:center 15%;border:4px solid rgba(56,189,248,0.3);box-shadow:0 0 0 8px var(--glow),0 8px 30px rgba(0,0,0,0.2);margin:0 auto 1rem;transition:var(--tr)}
.avatar:hover{border-color:var(--accent);box-shadow:0 0 0 8px var(--glow),0 0 25px rgba(56,189,248,0.2)}
[data-theme="light"] .avatar{border-color:rgba(2,132,199,0.25);box-shadow:0 0 0 8px var(--glow),0 8px 30px rgba(0,0,0,0.08)}

/* SECTIONS */
section{padding:4.5rem 1.5rem}
.alt-bg{background:var(--bg-alt)}
.section-inner{max-width:1000px;margin:0 auto}
.section-header{text-align:center;margin-bottom:2.5rem}
.section-label{font-size:0.75rem;font-weight:700;text-transform:uppercase;letter-spacing:0.1em;color:var(--accent);margin-bottom:0.5rem}
.section-title{font-size:1.8rem;font-weight:700;margin-bottom:0.4rem}
.section-desc{color:var(--muted);max-width:500px;margin:0 auto;font-size:0.95rem}

/* ABOUT */
.about-grid{display:grid;grid-template-columns:1fr 1fr;gap:2.5rem;align-items:start}
.about-text p{color:var(--muted);margin-bottom:1rem;font-size:0.95rem}
.about-text p:first-child{color:var(--text);font-size:1.02rem}
.about-details{display:grid;grid-template-columns:1fr 1fr;gap:0.75rem}
.about-detail{padding:1.1rem;background:var(--surface);border:1px solid var(--line);border-radius:8px;transition:var(--tr)}
.about-detail:hover{border-color:var(--accent)}
.about-detail-icon{font-size:1.3rem;margin-bottom:0.3rem}
.about-detail-label{font-size:0.68rem;color:var(--dim);text-transform:uppercase;letter-spacing:0.04em}
.about-detail-value{font-weight:600;font-size:0.88rem;margin-top:0.1rem}

/* SKILLS (screen) */
.skills-tabs{display:flex;justify-content:center;gap:0.4rem;margin-bottom:2rem;flex-wrap:wrap}
.skills-tab{padding:0.5rem 1.2rem;background:var(--surface);border:1px solid var(--line);border-radius:999px;color:var(--muted);cursor:pointer;font:inherit;font-size:0.82rem;font-weight:600;transition:var(--tr)}
.skills-tab:hover{border-color:var(--accent);color:var(--accent)}
.skills-tab.active{background:var(--accent);border-color:var(--accent);color:#fff}
.skills-panel{display:none}
.skills-panel.active{display:block;animation:fadeIn .3s ease}
@keyframes fadeIn{from{opacity:0;transform:translateY(6px)}to{opacity:1;transform:translateY(0)}}
.skills-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(130px,1fr));gap:0.6rem}
.skill-card{padding:0.85rem 0.7rem;background:var(--surface);border:1px solid var(--line);border-radius:8px;text-align:center;font-size:0.82rem;font-weight:600;transition:var(--tr);position:relative;overflow:hidden}
.skill-card::before{content:"";position:absolute;top:0;left:0;right:0;height:2px;background:var(--gradient);transform:scaleX(0);transition:transform .3s ease}
.skill-card:hover::before{transform:scaleX(1)}
.skill-card:hover{border-color:var(--accent);transform:translateY(-2px);box-shadow:var(--shadow)}

/* TIMELINE */
.timeline{position:relative;padding-left:1.5rem}
.timeline::before{content:"";position:absolute;left:0;top:0;bottom:0;width:2px;background:linear-gradient(to bottom,var(--accent),var(--accent2));border-radius:1px}
.timeline-item{position:relative;padding-bottom:2rem}
.timeline-item:last-child{padding-bottom:0}
.timeline-dot{position:absolute;left:-1.5rem;top:0.3rem;width:11px;height:11px;background:var(--accent);border-radius:50%;border:3px solid var(--bg);transform:translateX(-4.5px);z-index:1}
.timeline-date{font-size:0.75rem;color:var(--accent);font-weight:600;margin-bottom:0.4rem;text-transform:uppercase;letter-spacing:0.03em}
.timeline-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:1.5rem;transition:var(--tr)}
.timeline-card:hover{border-color:var(--line);box-shadow:var(--shadow)}
.timeline-role{font-size:1.1rem;font-weight:700;margin-bottom:0.15rem}
.timeline-company{color:var(--accent);font-weight:600;font-size:0.92rem;margin-bottom:0.15rem}
.timeline-company a{color:inherit;text-decoration:none}
.timeline-company a:hover{text-decoration:underline}
.timeline-note{color:var(--muted);font-size:0.88rem;margin:0}
.timeline-location{color:var(--dim);font-size:0.8rem;margin-bottom:0.85rem}
.timeline-desc{list-style:none;padding:0;display:grid;gap:0.45rem;margin-bottom:1rem}
.timeline-desc li{padding-left:0.9rem;position:relative;font-size:0.88rem;color:var(--muted)}
.timeline-desc li::before{content:"";position:absolute;left:0;top:0.52rem;width:4px;height:4px;background:var(--accent);border-radius:50%}
.timeline-tags{display:flex;flex-wrap:wrap;gap:0.35rem}
.tag{padding:0.2rem 0.65rem;background:var(--glow);border:1px solid rgba(56,189,248,0.15);border-radius:999px;font-size:0.7rem;color:var(--accent);font-weight:500}

/* CAPABILITIES */
.capability-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(130px,1fr));gap:0.6rem}
.cap-card{display:flex;flex-direction:column;align-items:center;gap:0.5rem;padding:1.1rem 0.6rem;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);cursor:pointer;font:inherit;color:var(--text);transition:all 0.25s ease;text-align:center}
.cap-card:hover{border-color:var(--accent);transform:translateY(-3px);box-shadow:var(--shadow)}
.cap-card.is-active{border-color:var(--accent);background:var(--glow);box-shadow:0 0 0 3px var(--glow)}
.cap-card.devops.is-active{border-color:var(--accent3);background:rgba(52,211,153,0.08);box-shadow:0 0 0 3px rgba(52,211,153,0.1)}
.cap-icon{display:flex;align-items:center;justify-content:center;width:2rem;height:2rem;font-size:1.5rem;line-height:1}
.cap-title{font-size:0.78rem;font-weight:600;line-height:1.25}
.cap-detail{margin-top:1.25rem;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;transition:border-color 0.25s ease}
.cap-detail-inner{padding:1.5rem}
.cap-detail p{display:none;margin:0;font-size:0.95rem;color:var(--muted);line-height:1.6;animation:capFadeIn 0.3s ease}
.cap-detail p.is-visible{display:block}
.cap-detail a{color:var(--accent);text-decoration:none;font-weight:600}
.cap-detail a:hover{text-decoration:underline}
@keyframes capFadeIn{from{opacity:0;transform:translateY(6px)}to{opacity:1;transform:translateY(0)}}

/* DISSERTATION */
.dissertation-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:2rem;position:relative;overflow:hidden}
.dissertation-card::before{content:"";position:absolute;top:0;left:0;right:0;height:3px;background:var(--gradient)}
.dissertation-header{display:flex;justify-content:space-between;align-items:flex-start;gap:1.5rem;margin-bottom:1.25rem}
.dissertation-header h3{font-size:1.2rem;font-weight:700;margin:0 0 0.25rem}
.dissertation-meta{color:var(--accent);font-size:0.85rem;font-weight:500;margin:0}
.dissertation-score{display:flex;align-items:center;gap:0.6rem;flex-shrink:0;padding:0.6rem 1rem;background:var(--glow);border:1px solid rgba(56,189,248,0.15);border-radius:var(--radius)}
.score-value{font-size:1.8rem;font-weight:800;background:var(--gradient);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;line-height:1}
.score-label{font-size:0.7rem;color:var(--muted);font-weight:600;line-height:1.3}
.score-label span{color:var(--accent)}
.dissertation-desc{color:var(--muted);font-size:0.92rem;margin:0 0 0.75rem;line-height:1.55}
.dissertation-tech{display:flex;flex-wrap:wrap;gap:0.35rem;margin-top:1rem}
.dissertation-tech span{padding:0.25rem 0.7rem;background:var(--glow);border:1px solid rgba(56,189,248,0.15);border-radius:999px;font-size:0.72rem;color:var(--accent);font-weight:500}

/* EDUCATION */
.education-list{display:grid;gap:0}
.edu-item{display:flex;justify-content:space-between;align-items:flex-start;gap:1.5rem;padding:0.7rem 0;border-bottom:1px solid var(--line)}
.edu-item:last-child{border-bottom:none}
.edu-item h3{margin:0;font-size:0.95rem;font-weight:700}
.edu-school{margin:0.1rem 0 0;color:var(--muted);font-size:0.82rem}
.edu-note{margin:0.2rem 0 0;color:var(--dim);font-size:0.78rem;font-style:italic}
.edu-item time{color:var(--dim);font-size:0.82rem;font-weight:600;white-space:nowrap}

/* EXTRAS */
.extras-grid{display:grid;grid-template-columns:1fr 1fr;gap:1.25rem}
.extras-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:1.5rem}
.extras-card h3{font-size:1rem;font-weight:700;margin-bottom:1rem}
.language-item{display:flex;align-items:center;justify-content:space-between;padding:0.65rem 0;border-bottom:1px solid var(--line)}
.language-item:last-child{border-bottom:none}
.lang-name{font-weight:600;font-size:0.88rem}
.lang-level{color:var(--dim);font-size:0.78rem}
.lang-bar{width:100px;height:4px;background:var(--bg);border-radius:2px;overflow:hidden}
.lang-fill{height:100%;border-radius:2px;background:var(--gradient);transition:width 1s ease-out}
.highlight-tags{display:flex;flex-wrap:wrap;gap:0.4rem}
.highlight-tags span{padding:0.4rem 0.8rem;background:var(--bg);border:1px solid var(--line);border-radius:6px;font-size:0.78rem;color:var(--muted);transition:var(--tr)}
.highlight-tags span:hover{border-color:var(--accent);color:var(--accent)}

/* CONTACT */
.contact-section{text-align:center;padding:5rem 1.5rem}
.contact-links{display:flex;justify-content:center;gap:0.75rem;margin-top:1.5rem;flex-wrap:wrap}
.contact-link{display:inline-flex;align-items:center;gap:0.4rem;padding:0.65rem 1.2rem;background:var(--surface);border:1px solid var(--line);border-radius:8px;color:var(--text);text-decoration:none;font-weight:500;font-size:0.88rem;transition:var(--tr)}
.contact-link:hover{border-color:var(--accent);color:var(--accent);transform:translateY(-2px)}
.footer{text-align:center;padding:1.25rem;border-top:1px solid var(--line);color:var(--dim);font-size:0.78rem}

/* RESPONSIVE */
@media(max-width:900px){
  .nav-links{display:none;position:absolute;top:58px;left:0;right:0;background:var(--bg-alt);border-bottom:1px solid var(--line);flex-direction:column;padding:0.75rem}
  .nav-links.open{display:flex}
  .hamburger{display:block}
  .nav-actions{margin-left:auto}
  .hero-content{width:100%;max-width:100%}
  .hero h1{font-size:clamp(2.1rem,10vw,3rem);overflow-wrap:break-word}
  .hero-subtitle{max-width:100%;font-size:1rem}
  .about-grid,.extras-grid{grid-template-columns:1fr}
  .capability-grid{grid-template-columns:repeat(auto-fill,minmax(100px,1fr))}
  .dissertation-header{flex-direction:column;gap:0.75rem}
  section{padding:3rem 1rem}
}

@media(max-width:600px){
  .nav-inner{max-width:390px;margin:0;padding:0 1rem}
  .hero{justify-content:flex-start;padding-left:1rem;padding-right:1rem}
  .hero-content{width:calc(100vw - 2rem);max-width:360px;margin:0}
  .hero h1{font-size:clamp(2rem,9vw,2.6rem)}
  .btn{padding:0.65rem 1.1rem}
}

/* ====== PRINT — ATS-optimised single-column CV ====== */
@media print{
  .screen-only{display:none!important}
  .print-only{display:block!important}

  :root{--bg:#fff;--bg-alt:#fff;--surface:#fff;--text:#111;--muted:#222;--dim:#444;--line:#bbb;--accent:#111;--glow:transparent;--shadow:none}
  @page{size:A4;margin:12mm 14mm}
  body{background:#fff;font-family:Arial,Helvetica,sans-serif;font-size:10pt;line-height:1.45;color:#111}

  /* --- Header --- */
  .hero{min-height:auto;padding:0 0 8pt;text-align:left;border-bottom:1.5pt solid #111;margin-bottom:6pt}
  .hero h1{font-size:22pt;margin-bottom:1pt;letter-spacing:-0.02em}
  .print-title{font-size:12pt;font-weight:400;color:#222;margin:0 0 2pt}
  .print-contact{display:flex!important;gap:0;font-style:normal;font-size:9.5pt;color:#222;margin-top:3pt;flex-wrap:wrap}
  .print-contact span,.print-contact a{color:#222;text-decoration:none}
  .print-contact span:not(:last-child)::after,.print-contact a:not(:last-child)::after{content:" | ";color:#777;margin:0 0.6em}

  /* --- Sections --- */
  section{padding:5pt 0}
  .alt-bg{background:#fff}
  .section-inner{max-width:100%}
  .section-header{text-align:left;margin-bottom:4pt}
  .section-title{font-size:10pt;font-weight:700;text-transform:uppercase;letter-spacing:0.06em;color:#111;margin:0;padding-bottom:2pt;border-bottom:1pt solid #999}
  .section-label{display:none}
  .section-desc{display:none}

  /* --- Summary --- */
  .about-grid{display:block}
  .about-text p{font-size:9.5pt;color:#222;margin-bottom:0;line-height:1.45}

  /* --- Technical Skills --- */
  .print-skills{margin:0}
  .ps-row{display:flex;gap:0;padding:2pt 0;align-items:baseline;border-bottom:0.5pt solid #e5e5e5}
  .ps-row:last-child{border-bottom:none}
  .ps-row:nth-child(odd){background:transparent}
  .ps-row dt{font-weight:700;font-size:9.5pt;min-width:100pt;flex-shrink:0;color:#111}
  .ps-row dd{margin:0;font-size:9.5pt;color:#222}

  /* --- Work Experience --- */
  .timeline{padding-left:0}
  .timeline::before{display:none}
  .timeline-item{padding-bottom:7pt;break-inside:avoid}
  .timeline-card{background:none;border:none;padding:0;box-shadow:none}
  .timeline-card:hover{box-shadow:none;transform:none}
  .timeline-date{display:none}
  /* Inline header: Role — Company · Location | Date */
  .timeline-role{font-size:10.5pt;font-weight:700;margin-bottom:0;display:inline}
  .timeline-company{display:inline;font-size:10pt;font-weight:400;color:#222}
  .timeline-company::before{content:" — "}
  .timeline-company a{color:#222;text-decoration:none}
  .timeline-location{display:inline;font-size:9.5pt;color:#444}
  .timeline-location::before{content:" · "}
  .print-date{display:inline!important;font-size:9.5pt;color:#444;float:right;font-weight:400}
  .timeline-note{font-size:9.5pt;color:#222;margin:3pt 0 0}
  /* Bullets */
  .timeline-desc{padding-left:0;gap:1.5pt;margin:3pt 0 0;list-style:disc;margin-left:1.4em}
  .timeline-desc li{font-size:9.5pt;padding-left:0;list-style:disc;color:#222}
  .timeline-desc li::before{display:none}

  /* --- Capabilities: hide entirely in print (covered by skills + experience) --- */
  #capabilities{display:none!important}
  .print-supplemental{display:none!important}

  /* --- Projects (print) --- */
  #projects{padding:5pt 0}
  .print-project-header{display:block;margin-bottom:2pt}
  .print-project .timeline-desc{padding-left:0;gap:1.5pt;margin:3pt 0 0;list-style:disc;margin-left:1.4em}
  .print-project .timeline-desc li{font-size:9.5pt;padding-left:0;list-style:disc;color:#222}
  .print-project .timeline-desc li::before{display:none}

  /* --- Education --- */
  .edu-item{padding:2pt 0;border-bottom:none}
  .edu-item h3{font-size:10pt;font-weight:700}
  .edu-school{font-size:9.5pt}
  .edu-note{display:none}
  .edu-item time{font-size:9.5pt}

  /* --- Languages --- */
  #languages{display:none!important}
  #languages{padding:4pt 0}
  .extras-grid{display:block}
  .extras-card:last-child{display:none}
  .extras-card{background:none;border:none;padding:0}
  .extras-card h3{display:none}
  .language-item{display:inline;padding:0;border:none}
  .language-item::after{content:"  |  ";color:#999}
  .language-item:last-child::after{content:""}
  .lang-bar{display:none}
  .lang-name{display:inline;font-size:9.5pt;font-weight:700}
  .lang-level{display:inline;font-size:9.5pt}
  .lang-level::before{content:" — "}
}