/* =========================================================
   Bakir Zanoun – Portfolio
   Fonts are self-hosted (no Google requests, GDPR-friendly)
   ========================================================= */
@font-face{font-family:"Bricolage Grotesque";font-weight:700;font-display:swap;src:url(../fonts/bricolage-grotesque-latin-700-normal.woff2) format("woff2")}
@font-face{font-family:"Bricolage Grotesque";font-weight:800;font-display:swap;src:url(../fonts/bricolage-grotesque-latin-800-normal.woff2) format("woff2")}
@font-face{font-family:"IBM Plex Sans";font-weight:400;font-display:swap;src:url(../fonts/ibm-plex-sans-latin-400-normal.woff2) format("woff2")}
@font-face{font-family:"IBM Plex Sans";font-weight:400;font-style:italic;font-display:swap;src:url(../fonts/ibm-plex-sans-latin-400-italic.woff2) format("woff2")}
@font-face{font-family:"IBM Plex Sans";font-weight:500;font-display:swap;src:url(../fonts/ibm-plex-sans-latin-500-normal.woff2) format("woff2")}
@font-face{font-family:"IBM Plex Sans";font-weight:600;font-display:swap;src:url(../fonts/ibm-plex-sans-latin-600-normal.woff2) format("woff2")}
@font-face{font-family:"JetBrains Mono";font-weight:400;font-display:swap;src:url(../fonts/jetbrains-mono-latin-400-normal.woff2) format("woff2")}
@font-face{font-family:"JetBrains Mono";font-weight:500;font-display:swap;src:url(../fonts/jetbrains-mono-latin-500-normal.woff2) format("woff2")}

:root{
  --bg:#F3F6F9; --surface:#FFFFFF; --sunk:#E9EEF3; --ink:#101C27; --muted:#56687A; --line:#D6DFE7;
  --accent:#1E6BC0; --accent-ink:#FFFFFF; --accent-soft:#E1ECF8; --ok:#17835A; --warn:#A8690F;
  --term-bg:#0F1A24; --term-ink:#CFE0EE; --term-dim:#6F8698;
  --display:"Bricolage Grotesque","Segoe UI",system-ui,sans-serif;
  --body:"IBM Plex Sans","Segoe UI",system-ui,-apple-system,sans-serif;
  --mono:"JetBrains Mono",ui-monospace,Menlo,Consolas,monospace;
  --radius:12px; --max:1120px;
  color-scheme:light;
}
@media (prefers-color-scheme:dark){
  :root:not([data-theme="light"]){
    --bg:#0C131A; --surface:#131E28; --sunk:#0F1921; --ink:#E5EDF3; --muted:#91A3B3; --line:#23323F;
    --accent:#68AAEE; --accent-ink:#0C131A; --accent-soft:#16304A; --ok:#4BC389; --warn:#E2A546;
    --term-bg:#081018; color-scheme:dark;
  }
}
:root[data-theme="dark"]{
  --bg:#0C131A; --surface:#131E28; --sunk:#0F1921; --ink:#E5EDF3; --muted:#91A3B3; --line:#23323F;
  --accent:#68AAEE; --accent-ink:#0C131A; --accent-soft:#16304A; --ok:#4BC389; --warn:#E2A546;
  --term-bg:#081018; color-scheme:dark;
}

*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{animation:none!important;transition:none!important}}
body{margin:0;background:var(--bg);color:var(--ink);font:16px/1.65 var(--body);-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block}
a{color:var(--accent);text-underline-offset:3px;text-decoration-thickness:1px}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:4px}
[hidden]{display:none!important}
body[data-lang="de"] .en,body[data-lang="en"] .de{display:none!important}

.container{max-width:var(--max);margin:0 auto;padding-inline:20px}
.skip{position:absolute;left:-999px}
.skip:focus{left:16px;top:16px;background:var(--surface);padding:8px 12px;z-index:100}

/* ---------- Header ---------- */
.site-header{position:sticky;top:0;z-index:50;background:color-mix(in srgb,var(--bg) 86%,transparent);backdrop-filter:blur(10px);-webkit-backdrop-filter:blur(10px);border-bottom:1px solid transparent;transition:border-color .2s}
.site-header.scrolled{border-bottom-color:var(--line)}
.nav{display:flex;align-items:center;justify-content:space-between;gap:16px;height:64px}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--ink);font:700 17px var(--display);letter-spacing:-.01em}
.brand-mark{width:32px;height:32px;border-radius:8px;background:var(--ink);color:var(--bg);display:grid;place-items:center;font:800 14px var(--display)}
.nav-links{display:flex;gap:26px;list-style:none;margin:0;padding:0}
.nav-links a{color:var(--muted);text-decoration:none;font-size:14px;font-weight:500}
.nav-links a:hover{color:var(--ink)}
.nav-tools{display:flex;align-items:center;gap:8px}
.seg{display:inline-flex;border:1px solid var(--line);border-radius:8px;overflow:hidden;background:var(--surface)}
.seg button{font:500 12px var(--mono);border:0;background:none;color:var(--muted);padding:6px 10px;cursor:pointer}
.seg button[aria-pressed="true"]{background:var(--ink);color:var(--bg)}
.icon-btn{width:34px;height:34px;display:grid;place-items:center;border:1px solid var(--line);border-radius:8px;background:var(--surface);color:var(--ink);cursor:pointer}
.icon-btn svg{width:16px;height:16px}
@media (max-width:820px){.nav-links{display:none}}

/* ---------- Buttons ---------- */
.btn{display:inline-flex;align-items:center;gap:8px;font:600 15px var(--body);padding:11px 18px;border-radius:10px;text-decoration:none;border:1px solid var(--line);color:var(--ink);background:var(--surface);cursor:pointer;transition:transform .15s,border-color .15s}
.btn:hover{border-color:var(--ink);transform:translateY(-1px)}
.btn.primary{background:var(--accent);border-color:var(--accent);color:var(--accent-ink)}
.btn.primary:hover{filter:brightness(1.07)}
.btn svg{width:17px;height:17px}

/* ---------- Hero ---------- */
.hero{padding-block:72px 56px}
.hero-grid{display:grid;grid-template-columns:1.05fr 1fr;gap:56px;align-items:center}
@media (max-width:920px){.hero-grid{grid-template-columns:1fr;gap:40px}.hero{padding-block:40px 32px}}
.status{display:inline-flex;align-items:center;gap:8px;font:500 12.5px var(--mono);color:var(--ok);background:color-mix(in srgb,var(--ok) 12%,transparent);padding:5px 11px;border-radius:999px}
.status::before{content:"";width:7px;height:7px;border-radius:50%;background:var(--ok);animation:pulse 2s infinite}
@keyframes pulse{50%{opacity:.3}}
.hero h1{font:800 clamp(40px,6.4vw,72px)/.98 var(--display);letter-spacing:-.035em;margin:18px 0 18px;text-wrap:balance}
.hero h1 .thin{color:var(--muted)}
.hero .lead{font-size:clamp(17px,2vw,19px);color:var(--ink);max-width:36em;margin:0 0 28px}
.hero .lead b{font-weight:600}
.cta-row{display:flex;flex-wrap:wrap;gap:12px}
.facts{display:flex;flex-wrap:wrap;gap:10px 22px;margin:28px 0 0;padding:0;list-style:none;font:500 13px var(--mono);color:var(--muted)}
.facts li::before{content:"› ";color:var(--accent)}

/* Terminal / pipeline card */
.term{background:var(--term-bg);color:var(--term-ink);border-radius:16px;padding:0;overflow:hidden;box-shadow:0 30px 60px -30px rgba(10,30,50,.45);font:13px/1.7 var(--mono)}
.term-bar{display:flex;align-items:center;gap:7px;padding:12px 16px;border-bottom:1px solid rgba(255,255,255,.07)}
.term-bar i{width:11px;height:11px;border-radius:50%;background:#2A3A48}
.term-bar span{margin-left:auto;color:var(--term-dim);font-size:12px}
.term-body{padding:16px 18px 18px;overflow-x:auto}
.term-line{white-space:pre;opacity:1}
.term .dim{color:var(--term-dim)}
.term .ok{color:#4BC389}
.term .acc{color:#7DB8F2}
.term .warn{color:#E8B04F}
.term-line.pending{opacity:0}
.term-line.show{animation:lineIn .25s ease-out forwards}
@keyframes lineIn{from{opacity:0;transform:translateY(3px)}to{opacity:1;transform:none}}
.stages{display:grid;grid-template-columns:repeat(5,1fr);gap:6px;margin-top:14px}
.st{border:1px solid rgba(255,255,255,.1);border-radius:8px;padding:7px 8px;font-size:11px;color:var(--term-dim);display:flex;flex-direction:column;gap:2px}
.st b{color:var(--term-ink);font-weight:500;font-size:12px}
.st.done{border-color:rgba(75,195,137,.45)}
.st.done em{color:#4BC389}
.st.sec{border-color:rgba(125,184,242,.6);background:rgba(125,184,242,.08)}
.st em{font-style:normal}
@media (max-width:480px){.stages{grid-template-columns:repeat(3,1fr)}}

/* ---------- Sections ---------- */
section.block{padding-block:72px;border-top:1px solid var(--line)}
@media (max-width:720px){section.block{padding-block:52px}}
.sec-head{display:grid;grid-template-columns:260px 1fr;gap:32px;margin-bottom:40px}
@media (max-width:820px){.sec-head{grid-template-columns:1fr;gap:10px;margin-bottom:28px}}
.eyebrow{font:500 12px var(--mono);text-transform:uppercase;letter-spacing:.14em;color:var(--accent);margin:6px 0 0}
.sec-head h2{font:700 clamp(28px,3.6vw,38px)/1.1 var(--display);letter-spacing:-.02em;margin:0 0 10px;text-wrap:balance}
.sec-head p{margin:0;color:var(--muted);max-width:62ch}

/* How I work */
.principles{display:grid;grid-template-columns:repeat(2,1fr);gap:1px;background:var(--line);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden}
@media (max-width:720px){.principles{grid-template-columns:1fr}}
.pr{background:var(--surface);padding:28px;display:flex;flex-direction:column;gap:10px}
.pr .step{font:500 12px var(--mono);color:var(--muted)}
.pr h3{font:700 21px/1.25 var(--display);margin:0;letter-spacing:-.01em}
.pr p{margin:0;color:var(--muted);font-size:15.5px}
.pr code{font:500 12.5px var(--mono);background:var(--sunk);padding:2px 6px;border-radius:5px;color:var(--ink)}

/* Projects */
.projects{display:flex;flex-direction:column;gap:20px}
.case{display:grid;grid-template-columns:260px 1fr;gap:32px;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:28px}
@media (max-width:820px){.case{grid-template-columns:1fr;gap:16px;padding:22px}}
.case-side{display:flex;flex-direction:column;gap:10px}
.kind{font:500 11.5px var(--mono);text-transform:uppercase;letter-spacing:.1em;color:var(--accent)}
.case h3{font:700 22px/1.25 var(--display);margin:0;letter-spacing:-.01em;text-wrap:balance}
.case .orig{font-style:italic;color:var(--muted);font-size:14px;margin:0}
.case dl{margin:0;display:grid;grid-template-columns:110px 1fr;gap:10px 18px}
@media (max-width:520px){.case dl{grid-template-columns:1fr;gap:2px}.case dd{margin-bottom:10px!important}}
.case dt{font:500 12px/1.9 var(--mono);text-transform:uppercase;letter-spacing:.08em;color:var(--muted)}
.case dd{margin:0;font-size:15.5px}
.chips{display:flex;flex-wrap:wrap;gap:6px}
.chip{font:500 12px var(--mono);padding:3px 9px;border-radius:6px;background:var(--accent-soft);color:var(--ink)}
.chip.plain{background:var(--sunk)}

/* Timeline */
.tl{list-style:none;margin:0;padding:0;display:flex;flex-direction:column}
.tl > li{display:grid;grid-template-columns:260px 1fr;gap:32px;padding:22px 0;border-bottom:1px dashed var(--line)}
.tl > li:last-child{border-bottom:0}
@media (max-width:820px){.tl > li{grid-template-columns:1fr;gap:6px}}
.when{font:500 13px var(--mono);color:var(--muted);font-variant-numeric:tabular-nums;display:flex;flex-direction:column;gap:2px}
.when .badge{align-self:flex-start;font-size:11px;padding:1px 8px;border-radius:999px;background:var(--accent-soft);color:var(--accent);margin-top:4px}
.tl h3{font:600 18px/1.35 var(--body);margin:0}
.tl .org{color:var(--muted);margin:2px 0 8px;font-size:15px}
.tl ul{margin:0;padding-left:18px;display:flex;flex-direction:column;gap:4px;font-size:15.5px;max-width:68ch}

/* Skills */
.skills{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:16px}
.sk{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:22px;display:flex;flex-direction:column;gap:12px}
.sk h3{font:600 16px var(--body);margin:0}
.sk p{margin:0;font-size:14px;color:var(--muted)}

.langs{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:12px;margin-top:28px}
.lang{display:flex;justify-content:space-between;align-items:center;gap:12px;padding:14px 16px;border:1px solid var(--line);border-radius:10px;background:var(--surface)}
.lang small{display:block;color:var(--muted);font-size:13px}
.bars{display:flex;gap:3px}
.bars i{width:8px;height:18px;border-radius:2px;background:var(--line)}
.bars i.on{background:var(--accent)}

/* Contact */
.contact-card{background:var(--ink);color:var(--bg);border-radius:20px;padding:clamp(28px,5vw,56px);display:grid;grid-template-columns:1.2fr 1fr;gap:40px;align-items:center}
@media (max-width:820px){.contact-card{grid-template-columns:1fr}}
.contact-card h2{font:800 clamp(30px,4.4vw,48px)/1.05 var(--display);letter-spacing:-.03em;margin:0 0 14px;text-wrap:balance}
.contact-card p{margin:0;opacity:.78;max-width:46ch}
.contact-list{display:flex;flex-direction:column;gap:12px}
.cl{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:14px 16px;border:1px solid color-mix(in srgb,var(--bg) 22%,transparent);border-radius:12px;color:var(--bg);text-decoration:none;flex-wrap:wrap}
.cl:hover{border-color:var(--bg)}
.cl .k{font:500 11.5px var(--mono);text-transform:uppercase;letter-spacing:.1em;opacity:.65}
.cl .v{font-weight:500;word-break:break-all}
.copy{font:500 12px var(--mono);border:1px solid color-mix(in srgb,var(--bg) 30%,transparent);background:transparent;color:var(--bg);padding:4px 10px;border-radius:6px;cursor:pointer}

/* Footer */
.site-footer{padding-block:32px 40px;font:400 13px var(--mono);color:var(--muted)}
.site-footer .container{display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px}
.site-footer a{color:var(--muted)}

/* Reveal on scroll – content is visible by default; JS only adds a gentle lift */
.reveal{transition:opacity .5s ease,transform .5s ease}
.js .reveal.pre{opacity:.001;transform:translateY(14px)}

@media print{.site-header,.cta-row,.nav-tools,.term{display:none}body{background:#fff;color:#000}}

/* ---------- DevOps / IoT diagrams ---------- */
.diagram{margin:0 0 20px;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:26px;display:flex;flex-direction:column;gap:20px}
@media (max-width:720px){.diagram{padding:18px}}
.diagram figcaption{display:flex;flex-direction:column;gap:4px}
.diagram figcaption .kind{font:500 11.5px var(--mono);text-transform:uppercase;letter-spacing:.1em;color:var(--accent)}
.diagram figcaption strong{font:700 22px/1.25 var(--display);letter-spacing:-.01em}
.diagram .muted{color:var(--muted);font-size:14px}
.diagram-scroll{overflow-x:auto;-webkit-overflow-scrolling:touch;margin-inline:-4px;padding:4px}
.pipe-svg{display:block;width:100%;min-width:760px;height:auto}
.d-frame{fill:var(--sunk);stroke:var(--line);stroke-width:1;stroke-dasharray:5 5}
.d-box{fill:var(--surface);stroke:var(--line);stroke-width:1.4}
.d-acc{fill:var(--accent-soft);stroke:var(--accent)}
.d-ok{fill:color-mix(in srgb,var(--ok) 12%,var(--surface));stroke:var(--ok)}
.d-bad{fill:color-mix(in srgb,#D14343 10%,var(--surface));stroke:#D14343}
.d-t{fill:var(--ink);font:600 14px var(--body);text-anchor:middle}
.d-s{fill:var(--muted);font:400 11.5px var(--mono);text-anchor:middle}
.d-label{fill:var(--muted);font:500 11px var(--mono);letter-spacing:.08em;text-transform:uppercase}
.d-line{stroke:var(--muted);stroke-width:1.6}
.d-arrowhead{fill:var(--muted)}
.d-okline{stroke:var(--ok)} .d-oktext{fill:var(--ok)}
.d-badline{stroke:#D14343} .d-bad-fill{fill:#D14343} .d-badtext{fill:#D14343}
.d-accline{stroke:var(--accent)} .d-acc-fill{fill:var(--accent)}
.d-dash{stroke-dasharray:5 4}
.legend{margin:0;padding-left:20px;display:flex;flex-direction:column;gap:6px;font-size:15px;color:var(--muted);max-width:80ch}
.legend b{color:var(--ink);font-weight:600}
.flow{display:grid;grid-template-columns:repeat(6,1fr);gap:22px;counter-reset:n}
@media (max-width:980px){.flow{grid-template-columns:repeat(3,1fr)}}
@media (max-width:560px){.flow{grid-template-columns:1fr}}
.node{position:relative;border:1.4px solid var(--line);border-radius:10px;padding:14px;display:flex;flex-direction:column;gap:3px;background:var(--surface)}
.node b{font-weight:600;font-size:15px}
.node small{color:var(--muted);font-size:12.5px}
.node code{font:500 11.5px var(--mono)}
.node .n-k{font:500 11px var(--mono);color:var(--muted)}
.node.acc{border-color:var(--accent);background:var(--accent-soft)}
.node.ok{border-color:var(--ok);background:color-mix(in srgb,var(--ok) 10%,var(--surface))}
.node:not(:last-child)::after{content:"→";position:absolute;right:-18px;top:50%;transform:translateY(-50%);color:var(--muted);font-size:15px}
@media (max-width:980px){.node:nth-child(3n)::after{content:none}}
@media (max-width:560px){.node:not(:last-child)::after{content:"↓";right:auto;left:50%;top:auto;bottom:-20px;transform:translateX(-50%)}}

/* =========================================================
   Animations (all disabled automatically for prefers-reduced-motion)
   ========================================================= */

/* 1 · Hero entrance: elements rise in one after another (--i = order) */
.js .intro{animation:introUp .7s cubic-bezier(.2,.7,.2,1) both;animation-delay:calc(var(--i,0) * 110ms + 80ms)}
@keyframes introUp{from{opacity:0;transform:translateY(18px)}to{opacity:1;transform:none}}

/* Hero backdrop: faint blueprint grid that slowly drifts */
.hero{position:relative;overflow:hidden}
.hero::before{content:"";position:absolute;inset:-40px;z-index:-1;pointer-events:none;
  background-image:linear-gradient(var(--line) 1px,transparent 1px),linear-gradient(90deg,var(--line) 1px,transparent 1px);
  background-size:40px 40px;opacity:.45;
  -webkit-mask-image:radial-gradient(ellipse 70% 60% at 75% 40%,#000 10%,transparent 70%);
          mask-image:radial-gradient(ellipse 70% 60% at 75% 40%,#000 10%,transparent 70%);
  animation:gridDrift 30s linear infinite}
@keyframes gridDrift{to{transform:translate(40px,40px)}}

/* 2 · Pipeline diagram: stages light up as the release packet passes (7s loop, --d = arrival time) */
.pkt-core{fill:var(--accent)}
.pkt-halo{fill:var(--accent);opacity:.25;animation:halo 1.2s ease-in-out infinite}
@keyframes halo{50%{opacity:.05}}
.glow{fill:none;stroke:var(--accent);stroke-width:3;opacity:0;animation:glow 7s linear infinite;animation-delay:var(--d,0s)}
.glow-ok{stroke:var(--ok)}
@keyframes glow{0%{opacity:1}14%{opacity:0}100%{opacity:0}}
/* dashed side paths "march" to show continuous activity */
.d-dash{animation:march 1.2s linear infinite}
@keyframes march{to{stroke-dashoffset:-18}}
/* paused until the diagram is on screen (JS adds .play) */
.diagram:not(.play) .glow,.diagram:not(.play) .d-dash,.diagram:not(.play) .pkt-halo{animation-play-state:paused}

/* 3 · IoT flow: data packets travel between nodes */
.node{transition:transform .2s,border-color .2s}
.node:hover{transform:translateY(-3px);border-color:var(--accent)}
.node:not(:last-child)::before{content:"";position:absolute;right:-15px;top:calc(50% - 12px);width:6px;height:6px;border-radius:50%;background:var(--accent);opacity:0;
  animation:hop 3s ease-in-out infinite;animation-delay:calc(var(--n,0) * .5s)}
.node:nth-child(1){--n:0}.node:nth-child(2){--n:1}.node:nth-child(3){--n:2}.node:nth-child(4){--n:3}.node:nth-child(5){--n:4}
@keyframes hop{0%{opacity:0;transform:translateX(-8px)}15%{opacity:1}35%{opacity:1;transform:translateX(8px)}45%,100%{opacity:0;transform:translateX(8px)}}
@media (max-width:980px){.node:nth-child(3n)::before{content:none}}
@media (max-width:560px){.node:not(:last-child)::before{right:auto;left:calc(50% + 10px);top:auto;bottom:-16px;animation-name:hopDown}}
@keyframes hopDown{0%{opacity:0;transform:translateY(-6px)}15%{opacity:1}35%{opacity:1;transform:translateY(6px)}45%,100%{opacity:0}}
.diagram:not(.play) .node::before{animation-play-state:paused}

/* 4 · Hover micro-interactions */
.pr{transition:background .2s}
.pr:hover{background:color-mix(in srgb,var(--accent-soft) 45%,var(--surface))}
.case,.sk{transition:transform .2s,border-color .2s,box-shadow .2s}
.case:hover,.sk:hover{transform:translateY(-3px);border-color:color-mix(in srgb,var(--accent) 45%,var(--line));box-shadow:0 14px 30px -20px rgba(16,40,70,.35)}
.btn.primary{position:relative;overflow:hidden}
.btn.primary::after{content:"";position:absolute;inset:0;background:linear-gradient(110deg,transparent 30%,rgba(255,255,255,.28) 50%,transparent 70%);transform:translateX(-100%)}
.btn.primary:hover::after{transition:transform .7s;transform:translateX(100%)}