/* ================================================================
   Jamal TAFECH — Engineering Portfolio
   Edit the variables below to change the site's complete color system.
   ================================================================ */
:root {
  --bg: #0B1020;
  --bg-soft: #11182B;
  --surface: rgba(17, 24, 43, 0.76);
  --surface-solid: #151E35;
  --line: rgba(34, 211, 238, 0.16);
  --line-strong: rgba(34, 211, 238, 0.3);
  --text: #F8FAFC;
  --muted: #9FB0C3;
  --accent: #2563EB;
  --accent-soft: rgba(37, 99, 235, 0.14);
  --accent-2: #22D3EE;
  --accent-2-soft: rgba(34, 211, 238, 0.13);
  --nav-height: 78px;
  --radius: 18px;
  --container: 1180px;
  --font: "Manrope", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --mono: "IBM Plex Mono", Consolas, monospace;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: calc(var(--nav-height) + 22px); }
body { margin: 0; color: var(--text); background: var(--bg); font-family: var(--font); line-height: 1.65; overflow-x: hidden; }
body.menu-open { overflow: hidden; }
a { color: inherit; text-decoration: none; }
button { font: inherit; }
img { max-width: 100%; display: block; }
::selection { background: var(--accent); color: var(--bg); }
.container { width: min(calc(100% - 40px), var(--container)); margin-inline: auto; }
.section { position: relative; padding: 120px 0; }
.skip-link { position: fixed; z-index: 2000; top: 10px; left: 10px; transform: translateY(-160%); padding: 10px 16px; background: var(--accent); color: var(--bg); border-radius: 6px; font-weight: 700; }
.skip-link:focus { transform: none; }
.page-grid { position: fixed; inset: 0; pointer-events: none; z-index: -1; opacity: .35; background-image: linear-gradient(var(--line) 1px, transparent 1px), linear-gradient(90deg, var(--line) 1px, transparent 1px); background-size: 80px 80px; mask-image: linear-gradient(to bottom, black, transparent 75%); }

/* Navigation */
.site-header { height: var(--nav-height); position: fixed; inset: 0 0 auto; z-index: 1000; border-bottom: 1px solid transparent; transition: .3s ease; }
.site-header.scrolled { background: rgba(11, 16, 32, .88); border-color: var(--line); backdrop-filter: blur(18px); }
.nav { height: var(--nav-height); display: flex; align-items: center; justify-content: space-between; }
.brand { display: flex; align-items: center; gap: 12px; font-size: .82rem; font-weight: 700; letter-spacing: .07em; text-transform: uppercase; }
.brand-mark { display: grid; place-items: center; width: 37px; height: 37px; border: 1px solid var(--accent-2); color: var(--accent-2); font-family: var(--mono); font-size: .76rem; clip-path: polygon(10px 0,100% 0,100% calc(100% - 10px),calc(100% - 10px) 100%,0 100%,0 10px); }
.nav-links { display: flex; align-items: center; gap: 27px; }
.nav-links a { color: var(--muted); font-size: .76rem; letter-spacing: .04em; transition: .2s; position: relative; }
.nav-links a::after { content: ""; position: absolute; left: 0; right: 100%; bottom: -8px; height: 1px; background: var(--accent); transition: .25s; }
.nav-links a:hover, .nav-links a.active { color: var(--text); }
.nav-links a.active::after { right: 0; }
.nav-toggle { display: none; width: 42px; height: 42px; padding: 10px; border: 1px solid var(--line); background: var(--surface); color: white; border-radius: 8px; }
.nav-toggle span { display: block; height: 1px; margin: 5px 0; background: currentColor; transition: .25s; }
.nav-close { display: none; }

/* Shared typography and controls */
.eyebrow, .kicker, .label, .panel-label { font-family: var(--mono); text-transform: uppercase; letter-spacing: .11em; color: var(--accent-2); font-size: .7rem; }
.status-dot { display: inline-block; width: 7px; height: 7px; margin-right: 9px; border-radius: 50%; background: var(--accent-2); box-shadow: 0 0 0 5px var(--accent-2-soft); }
.section-heading { max-width: 760px; margin-bottom: 54px; }
.section-heading h2, .contact-copy h2, .interests-layout h2 { margin: 7px 0 15px; font-size: clamp(2.25rem, 5vw, 4.7rem); line-height: 1.05; letter-spacing: -.055em; }
.section-heading h2 span, .contact-copy h2 span, .interests-layout h2 span { color: var(--accent); font-weight: 400; }
.section-heading > p:last-child { color: var(--muted); max-width: 600px; }
.button { display: inline-flex; align-items: center; justify-content: center; gap: 16px; min-height: 49px; padding: 0 21px; border: 1px solid var(--line-strong); border-radius: 7px; font-size: .82rem; font-weight: 700; transition: .25s ease; }
.button-primary { background: var(--accent); color: #F8FAFC; border-color: var(--accent); }
.button-primary:hover { background: var(--accent-2); color: #0B1020; transform: translateY(-2px); box-shadow: 0 12px 30px rgba(34,211,238,.18); }
.button-secondary:hover { border-color: var(--accent-2); color: var(--accent-2); transform: translateY(-2px); }
.text-link { color: var(--muted); font-size: .82rem; font-weight: 700; padding: 13px 0; }
.text-link:hover { color: var(--accent-2); }

/* Hero */
.hero { min-height: 100svh; padding-top: calc(var(--nav-height) + 65px); display: grid; align-items: center; overflow: hidden; }
.hero::before { content: ""; position: absolute; width: 700px; height: 700px; right: -250px; top: -120px; background: radial-gradient(circle, rgba(37,99,235,.18), transparent 68%); pointer-events: none; }
.hero-layout { display: grid; grid-template-columns: 1.04fr .96fr; gap: 70px; align-items: center; }
.hero-copy h1 { margin: 18px 0 9px; font-size: clamp(3.5rem, 7.5vw, 7.4rem); line-height: .87; letter-spacing: -.075em; }
.hero-copy h1 span { display: block; color: var(--accent); background: linear-gradient(90deg, var(--accent), var(--accent-2)); background-clip: text; -webkit-background-clip: text; -webkit-text-fill-color: transparent; -webkit-text-stroke: 0; }
.hero-role { color: #CBD5E1; max-width: 650px; font-size: .88rem; letter-spacing: .015em; }
.hero-role b { color: var(--accent-2); margin: 0 5px; }
.hero-intro { max-width: 650px; margin: 24px 0 30px; color: var(--muted); font-size: 1rem; }
.hero-actions { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; }
.hero-meta { margin-top: 56px; padding-top: 26px; border-top: 1px solid var(--line); display: flex; gap: 42px; }
.hero-meta div { display: grid; gap: 2px; }
.hero-meta strong { font-family: var(--mono); font-size: 1.15rem; color: var(--text); }
.hero-meta span { color: var(--muted); font-size: .67rem; text-transform: uppercase; letter-spacing: .07em; }
.system-visual { position: relative; min-height: 630px; padding: 22px; border: 1px solid var(--line-strong); background: linear-gradient(145deg, rgba(21,30,53,.92), rgba(11,16,32,.76)); border-radius: 2px 24px 2px 24px; box-shadow: 0 35px 90px rgba(0,0,0,.32); overflow: hidden; }
.system-visual::before, .architecture-panel::before { content: ""; position: absolute; inset: 0; background: linear-gradient(90deg, transparent 49.8%, rgba(34,211,238,.06) 50%, transparent 50.2%), linear-gradient(transparent 49.8%, rgba(34,211,238,.06) 50%, transparent 50.2%); background-size: 42px 42px; pointer-events: none; }
.visual-head, .visual-footer { position: relative; display: flex; justify-content: space-between; font-family: var(--mono); font-size: .62rem; letter-spacing: .08em; text-transform: uppercase; color: var(--muted); }
.live-label { color: var(--accent-2); }
.system-core { height: 235px; position: relative; display: grid; place-items: center; }
.orbit { position: absolute; border: 1px solid var(--line-strong); border-radius: 50%; }
.orbit-one { width: 192px; height: 192px; border-style: dashed; animation: rotate 30s linear infinite; }
.orbit-two { width: 143px; height: 143px; border-color: rgba(34,211,238,.32); }
.core-chip { z-index: 1; width: 116px; height: 116px; display: flex; flex-direction: column; justify-content: center; align-items: center; text-align: center; background: #131D35; border: 1px solid var(--accent-2); box-shadow: 0 0 50px rgba(34,211,238,.12); clip-path: polygon(12px 0,100% 0,100% calc(100% - 12px),calc(100% - 12px) 100%,0 100%,0 12px); }
.core-chip small { color: var(--muted); font: .52rem var(--mono); text-transform: uppercase; }
.core-chip strong { margin: 5px 0; color: var(--accent-2); font: 700 .8rem var(--mono); line-height: 1.2; }
.core-chip span { color: var(--muted); font: .43rem var(--mono); }
.system-flow { position: relative; list-style: none; padding: 0; margin: 0; display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }
.system-flow li { display: flex; align-items: center; gap: 12px; padding: 12px; border: 1px solid var(--line); background: rgba(14,22,41,.78); }
.system-flow li > span { color: var(--accent-2); font: .62rem var(--mono); }
.system-flow b, .system-flow small { display: block; }
.system-flow b { font-size: .72rem; }
.system-flow small { color: var(--muted); font-size: .58rem; }
.visual-footer { margin-top: 22px; padding-top: 16px; border-top: 1px solid var(--line); }
.scroll-cue { position: absolute; left: 50%; bottom: 20px; display: flex; align-items: center; gap: 12px; color: var(--muted); font: .6rem var(--mono); text-transform: uppercase; letter-spacing: .1em; transform: translateX(-50%); }
.scroll-cue span { display: inline-block; width: 42px; height: 1px; background: var(--line-strong); position: relative; }
.scroll-cue span::after { content: ""; position: absolute; top: -2px; width: 5px; height: 5px; border-radius: 50%; background: var(--accent-2); animation: scan 2s infinite; }
@keyframes rotate { to { transform: rotate(360deg); } }
@keyframes scan { from { left: 0; } to { left: 100%; } }

/* About */
.about-layout { display: grid; grid-template-columns: .72fr 1.28fr; gap: 80px; }
.about-copy .lead { color: var(--text); font-size: 1.4rem; line-height: 1.45; }
.about-copy p:not(.lead) { color: var(--muted); }
.interest-grid { display: grid; grid-template-columns: repeat(3, 1fr); border: 1px solid var(--line); }
.interest-grid article { min-height: 170px; padding: 22px; border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); background: rgba(17,24,43,.55); transition: .25s; }
.interest-grid article:nth-child(3n) { border-right: 0; }
.interest-grid article:nth-child(n+4) { border-bottom: 0; }
.interest-grid article:hover { background: var(--accent-2-soft); }
.interest-grid span { color: var(--accent-2); font: .62rem var(--mono); }
.interest-grid h3 { margin: 33px 0 4px; font-size: .98rem; }
.interest-grid p { margin: 0; color: var(--muted); font-size: .72rem; }

/* Projects */
.projects-section { background: linear-gradient(180deg, transparent, rgba(15,22,41,.74) 10%, rgba(15,22,41,.74) 90%, transparent); }
.project { margin-bottom: 42px; border: 1px solid var(--line-strong); background: rgba(14,21,39,.92); }
.project-featured { box-shadow: 0 35px 80px rgba(0,0,0,.2); }
.project-topline { display: flex; justify-content: space-between; padding: 14px 20px; border-bottom: 1px solid var(--line); color: var(--muted); font: .65rem var(--mono); text-transform: uppercase; letter-spacing: .07em; }
.project-number { color: var(--accent-2); }
.project-layout { display: grid; grid-template-columns: 1.05fr .95fr; }
.project-copy { padding: 42px; }
.project-copy h3, .project-card h3 { margin: 9px 0 18px; font-size: clamp(1.55rem, 3vw, 2.55rem); line-height: 1.15; letter-spacing: -.035em; }
.project-copy h3 span, .project-card h3 span { color: var(--muted); font-weight: 400; }
.project-copy > p:not(.label) { color: var(--muted); }
.project-facts { margin: 27px 0; border-left: 1px solid var(--line-strong); }
.project-facts > div { padding: 3px 0 15px 18px; }
.project-facts small { color: var(--accent-2); font: .62rem var(--mono); text-transform: uppercase; letter-spacing: .08em; }
.project-facts p { margin: 3px 0; color: #C7D2E3; font-size: .78rem; }
code { padding: 2px 6px; color: var(--accent); background: var(--accent-soft); font-family: var(--mono); font-size: .7rem; }
.tags { display: flex; flex-wrap: wrap; gap: 7px; }
.tags span { padding: 6px 9px; border: 1px solid var(--line); color: #B7C4D6; background: rgba(24,36,63,.58); border-radius: 4px; font: .61rem var(--mono); }
.architecture-panel { position: relative; overflow: hidden; min-height: 500px; padding: 25px; border-left: 1px solid var(--line); background: #10182B; }
.architecture-panel .panel-label { position: relative; }
.robot-architecture { position: relative; display: flex; flex-direction: column; align-items: center; padding-top: 30px; }
.arch-node { width: min(100%, 260px); padding: 13px 16px; border: 1px solid var(--line-strong); background: rgba(21,31,55,.96); text-align: center; }
.arch-node small, .arch-node span, .arch-node b { display: block; }
.arch-node small { color: var(--accent-2); font: .55rem var(--mono); text-transform: uppercase; }
.arch-node b { margin: 3px; font-size: .83rem; }
.arch-node span { color: var(--muted); font-size: .58rem; }
.arch-node.accent { border-color: var(--accent-2); box-shadow: 0 0 25px rgba(34,211,238,.1); }
.robot-architecture > i { height: 53px; color: var(--accent-2); font-style: normal; font-family: var(--mono); text-align: center; }
.robot-architecture > i em { display: block; color: var(--muted); font-size: .55rem; font-style: normal; }
.arch-branches { display: grid; grid-template-columns: 1fr 1fr; width: 100%; gap: 12px; color: var(--accent-2); text-align: center; }
.arch-branches div { display: flex; flex-direction: column; }
.arch-branches span { padding: 8px; color: var(--text); border: 1px solid var(--line); background: rgba(21,31,55,.92); font-size: .7rem; }
.arch-branches small { color: var(--muted); font-size: .55rem; }
.beam-panel { display: flex; flex-direction: column; }
.beam-flow { position: relative; flex: 1; display: flex; flex-direction: column; justify-content: center; align-items: center; }
.beam-flow > div { width: min(100%, 270px); padding: 12px; text-align: center; border: 1px solid var(--line-strong); background: rgba(21,31,55,.96); }
.beam-flow b, .beam-flow small { display: block; }
.beam-flow b { font-size: .75rem; }
.beam-flow small { color: var(--muted); font-size: .57rem; }
.beam-flow i { color: var(--accent-2); font-style: normal; transform: rotate(90deg); height: 26px; }
.beam-flow .accent { border-color: var(--accent-2); }
.project-details { border-top: 1px solid var(--line); }
.project-details summary { list-style: none; cursor: pointer; display: flex; justify-content: space-between; padding: 17px 24px; color: #D0DAE8; font: .7rem var(--mono); text-transform: uppercase; letter-spacing: .08em; }
.project-details summary::-webkit-details-marker { display: none; }
.project-details summary span { color: var(--accent); font-size: 1rem; transition: .2s; }
.project-details[open] summary span { transform: rotate(45deg); }
.details-grid { display: grid; grid-template-columns: repeat(4, 1fr); border-top: 1px solid var(--line); }
.details-grid > div { padding: 24px; border-right: 1px solid var(--line); }
.details-grid > div:last-child { border: 0; }
.details-grid h4 { margin: 0 0 7px; font-size: .8rem; }
.details-grid p { margin: 0; color: var(--muted); font-size: .7rem; }
.media-grid { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 1px; background: var(--line); border-top: 1px solid var(--line); }
.media-placeholder { min-height: 185px; padding: 18px; display: flex; flex-direction: column; justify-content: flex-end; background: #10182B; position: relative; overflow: hidden; }
.media-placeholder::before { content: ""; position: absolute; inset: 18px; border: 1px dashed var(--line-strong); background: linear-gradient(135deg, transparent 49.5%, var(--line) 50%, transparent 50.5%); }
.media-placeholder span { position: absolute; z-index: 1; top: 29px; left: 30px; color: var(--accent-2); font: .65rem var(--mono); }
.media-placeholder b, .media-placeholder small { position: relative; z-index: 1; }
.media-placeholder b { font-size: .73rem; }.media-placeholder small { color: var(--muted); font: .55rem var(--mono); }
.media-grid-robot { grid-template-columns: 2fr 1fr 1fr; }
.media-grid-strain { grid-template-columns: 1.35fr .8fr 1.15fr; }
.project-photo { position: relative; min-width: 0; min-height: 290px; margin: 0; overflow: hidden; background: #10182B; }
.project-photo img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; transition: transform .55s ease, filter .35s ease; }
.project-photo::after { content: ""; position: absolute; inset: 35% 0 0; background: linear-gradient(to bottom, transparent, rgba(11,16,32,.95)); pointer-events: none; }
.project-photo figcaption { position: absolute; z-index: 1; inset: auto 20px 18px; display: grid; gap: 2px; }
.project-photo figcaption span { color: var(--accent-2); font: .56rem var(--mono); letter-spacing: .07em; text-transform: uppercase; }
.project-photo figcaption strong { font-size: .76rem; }
.project-photo:hover img { transform: scale(1.035); filter: saturate(1.06); }
.project-photo.schematic-photo img, .project-photo.technical-photo img, .project-photo.interface-photo img { object-fit: contain; padding: 12px; background: #f4f6f7; }
.project-photo.interface-photo img { padding: 0; }
.media-source { margin: 0; padding: 11px 22px; border-top: 1px solid var(--line); color: var(--muted); background: rgba(12,18,35,.92); font: .56rem var(--mono); text-align: right; }
.media-source a { color: #B8C7DA; transition: color .2s; }.media-source a:hover { color: var(--accent-2); }
.project-links { display: flex; gap: 25px; flex-wrap: wrap; padding: 16px 22px; border-top: 1px solid var(--line); font: .62rem var(--mono); text-transform: uppercase; }
.project-links > span { color: var(--accent-2); }.disabled-link { color: var(--muted); cursor: not-allowed; }
.project-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; }
.project-card { min-height: 410px; padding: 30px; border: 1px solid var(--line); background: rgba(15,23,42,.78); display: flex; flex-direction: column; transition: .25s; }
.project-card:hover { transform: translateY(-4px); border-color: var(--line-strong); background: rgba(22,32,57,.96); }
.project-card:last-child { grid-column: span 2; min-height: 300px; }
.card-index { display: flex; justify-content: space-between; color: var(--accent-2); font: .65rem var(--mono); text-transform: uppercase; }
.card-index span { color: var(--muted); }
.project-card > p { color: var(--muted); font-size: .83rem; }
.project-card .tags { margin: 8px 0 25px; }
.roadmap { margin-top: auto; padding: 14px; border: 1px dashed var(--line-strong); }.roadmap small { color: var(--accent-2); font: .58rem var(--mono); text-transform: uppercase; }.roadmap p { margin: 5px 0; color: var(--muted); font-size: .67rem; }
.project-card .card-note { margin-top: auto; font-size: .68rem; }
.mini-process { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; margin: 12px 0 18px; font: .6rem var(--mono); color: var(--accent-2); }.mini-process i { color: var(--muted); }.mini-gallery { display: grid; grid-template-columns: 1fr 1fr; gap: 7px; }.mini-gallery div { display: grid; place-items: center; min-height: 72px; border: 1px dashed var(--line-strong); color: var(--muted); font: .56rem var(--mono); }
.cad-toolkit { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 8px; margin-top: auto; }
.cad-tool { min-width: 0; margin: 0; padding: 8px; border: 1px solid var(--line); background: rgba(11,16,32,.62); }
.cad-logo-stage { height: 76px; display: grid; place-items: center; padding: 9px; border-radius: 2px; background: #fff; overflow: hidden; }
.cad-logo-stage img { width: 100%; height: 100%; object-fit: contain; }
.cad-tool figcaption { display: grid; gap: 1px; padding: 8px 2px 1px; }
.cad-tool figcaption strong { color: var(--text); font-size: .62rem; line-height: 1.35; }
.cad-tool figcaption span { color: var(--muted); font: .49rem/1.45 var(--mono); }
.vox3d-card { display: grid; grid-template-columns: minmax(0, 1.35fr) minmax(230px, .65fr); gap: 36px; align-items: center; }
.vox3d-content { min-width: 0; display: flex; flex-direction: column; align-self: stretch; }
.vox3d-content > p { color: var(--muted); font-size: .83rem; }
.vox3d-content .tags { margin: 8px 0 25px; }
.vox3d-logo { width: min(100%, 290px); margin: 0 auto; border: 1px solid rgba(34,211,238,.3); background: #000; box-shadow: 0 22px 55px rgba(0,0,0,.28); overflow: hidden; }
.vox3d-logo img { width: 100%; aspect-ratio: 1; object-fit: cover; }

/* Skills, timeline, contact */
.skills-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
.skill-card { min-height: 240px; padding: 24px; border: 1px solid var(--line); background: rgba(15,23,42,.68); }
.skill-card h3 { margin: 30px 0 17px; font-size: 1rem; }.skill-code { color: var(--accent-2); font: .65rem var(--mono); }.skill-card.developing { border-style: dashed; }.development-label { margin: -12px 0 15px; color: var(--accent-2); font: .57rem var(--mono); text-transform: uppercase; letter-spacing: .08em; }
.timeline-section { border-block: 1px solid var(--line); background: rgba(14,21,39,.62); }
.two-column-heading { display: grid; grid-template-columns: .75fr 1.25fr; gap: 90px; align-items: center; }.two-column-heading .section-heading { margin: 0; }
.pending-card, .education-card { display: grid; grid-template-columns: auto 1fr; gap: 24px; padding: 30px; border: 1px solid var(--line); background: var(--surface); }
.pending-icon { display: grid; place-items: center; width: 52px; height: 52px; border: 1px dashed var(--accent-2); color: var(--accent-2); font: 1.3rem var(--mono); }.pending-card h3, .education-card h3 { margin: 6px 0; font-size: 1.25rem; }.pending-card p:last-child, .education-card p { color: var(--muted); font-size: .82rem; }
.education-mark { display: grid; place-items: center; width: 76px; height: 76px; background: var(--accent); color: #F8FAFC; font: 700 1rem var(--mono); clip-path: polygon(10px 0,100% 0,100% calc(100% - 10px),calc(100% - 10px) 100%,0 100%,0 10px); }.education-level { color: var(--text) !important; font-weight: 700; }.education-card small { color: var(--muted); font-size: .65rem; }
.education-logo { width: 160px; height: 160px; padding: 10px; border: 1px solid var(--line-strong); clip-path: none; background: #fff; overflow: hidden; }
.education-logo img { width: 100%; height: 100%; object-fit: contain; object-position: center; }
.education-logo-enib img { object-fit: contain; }
.education-logo-lebanese { padding: 0; }
.education-logo-lebanese img { padding: 0; background: #fff; }
.experience-layout { display: grid; grid-template-columns: .7fr 1.3fr; gap: 85px; align-items: start; }
.experience-layout .section-heading { position: sticky; top: calc(var(--nav-height) + 42px); margin: 0; }
.experience-timeline { position: relative; border-top: 1px solid var(--line); }
.experience-timeline::before { content: ""; position: absolute; top: 0; bottom: 0; left: 145px; width: 1px; background: var(--line); }
.experience-item { position: relative; display: grid; grid-template-columns: 122px 1fr; gap: 46px; padding: 30px 0; border-bottom: 1px solid var(--line); }
.experience-item::before { content: ""; position: absolute; top: 38px; left: 141px; width: 7px; height: 7px; border: 2px solid var(--bg-soft); border-radius: 50%; background: var(--accent-2); box-shadow: 0 0 0 4px var(--accent-2-soft); }
.experience-meta { display: flex; flex-direction: column; gap: 5px; padding-top: 3px; }
.experience-meta time { color: var(--text); font: .65rem var(--mono); }
.experience-meta span { color: var(--muted); font: .54rem var(--mono); text-transform: uppercase; letter-spacing: .06em; }
.experience-content h3 { margin: 4px 0 12px; font-size: 1.08rem; line-height: 1.35; }
.experience-content ul { margin: 0; padding-left: 18px; color: var(--muted); font-size: .76rem; }
.experience-content li + li { margin-top: 5px; }
.education-path { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.education-card { min-height: 235px; align-items: start; }
.education-mark-secondary { color: var(--accent-2); background: var(--accent-2-soft); border: 1px solid var(--accent-2); }
.education-topline { display: flex; align-items: center; justify-content: space-between; gap: 16px; }
.education-topline .label { margin: 0; }.education-topline time { color: var(--muted); font: .62rem var(--mono); }
.credentials-heading { display: flex; align-items: center; justify-content: space-between; margin-top: 45px; padding-bottom: 13px; border-bottom: 1px solid var(--line); }
.credentials-heading .label { margin: 0; }.credentials-heading span { color: var(--muted); font: .58rem var(--mono); text-transform: uppercase; letter-spacing: .07em; }
.credentials-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; margin-top: 14px; }
.credential-card { min-height: 185px; padding: 22px; border: 1px solid var(--line); background: rgba(15,23,42,.68); }
.credential-year { color: var(--accent-2); font: .62rem var(--mono); }
.credential-card h3 { margin: 29px 0 4px; font-size: .9rem; line-height: 1.35; }.credential-card p { margin: 0 0 16px; color: var(--muted); font-size: .7rem; }
.interests-section { background: var(--accent); color: #F8FAFC; }.interests-layout { display: grid; grid-template-columns: .85fr 1.15fr; gap: 80px; align-items: center; }.interests-layout .kicker, .interests-layout h2 span { color: #F8FAFC; }.interests-layout p { max-width: 500px; }.target-list { display: flex; flex-wrap: wrap; gap: 9px; }.target-list span { padding: 10px 13px; border: 1px solid rgba(34,211,238,.45); border-radius: 4px; font: .68rem var(--mono); }
.contact-section { padding-block: 150px; }.contact-layout { display: grid; grid-template-columns: 1fr 1fr; gap: 100px; align-items: center; }.contact-copy p:last-child { max-width: 470px; color: var(--muted); }.contact-details { border-top: 1px solid var(--line); }.contact-details a { display: grid; grid-template-columns: 110px 1fr auto; align-items: center; gap: 20px; padding: 23px 4px; border-bottom: 1px solid var(--line); transition: .2s; }.contact-details a:hover { padding-inline: 14px; background: var(--accent-2-soft); }.contact-details small { color: var(--accent-2); font: .6rem var(--mono); text-transform: uppercase; }.contact-details strong { font-size: .86rem; overflow-wrap: anywhere; }.contact-details span { color: var(--accent-2); }
.site-footer { padding: 34px 0; border-top: 1px solid var(--line); }.site-footer .container { display: flex; justify-content: space-between; align-items: center; gap: 30px; }.site-footer div > div { display: grid; }.site-footer strong { font-size: .75rem; }.site-footer span, .site-footer p { color: var(--muted); font-size: .62rem; }
.back-to-top { position: fixed; right: max(20px, env(safe-area-inset-right)); bottom: max(20px, env(safe-area-inset-bottom)); z-index: 900; display: grid; place-items: center; width: 46px; height: 46px; padding: 0; border: 1px solid rgba(34,211,238,.5); border-radius: 50%; background: rgba(14,22,41,.92); color: var(--accent-2); box-shadow: 0 14px 38px rgba(0,0,0,.3); backdrop-filter: blur(12px); cursor: pointer; opacity: 0; visibility: hidden; pointer-events: none; transform: translateY(12px) scale(.92); transition: opacity .22s ease, transform .22s ease, visibility 0s linear .22s, background .2s ease, color .2s ease; }
.back-to-top span { font: 1.15rem/1 var(--mono); transform: translateY(-1px); }
.back-to-top.visible { opacity: 1; visibility: visible; pointer-events: auto; transform: none; transition-delay: 0s; }
.back-to-top:hover { background: var(--accent-2); color: #0B1020; }
.back-to-top:focus-visible { outline: 2px solid var(--accent-2); outline-offset: 4px; }

/* Reveal animation: content stays visible when JavaScript is unavailable. */
.js .reveal { opacity: 0; transform: translateY(24px); transition: opacity .65s ease, transform .65s ease; }
.js .reveal.visible { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; transition-duration: .01ms !important; } .js .reveal { opacity: 1; transform: none; } }

/* Responsive layouts */
@media (max-width: 1040px) {
  .nav-links { gap: 17px; }.hero-layout { gap: 35px; }.system-visual { min-height: 595px; }.hero-meta { gap: 22px; }
  .details-grid { grid-template-columns: 1fr 1fr; }.details-grid > div:nth-child(2) { border-right: 0; }.details-grid > div:nth-child(-n+2) { border-bottom: 1px solid var(--line); }
  .skills-grid { grid-template-columns: 1fr 1fr; }.media-grid-robot { grid-template-columns: 1.5fr 1fr 1fr; }.media-grid-strain { grid-template-columns: 1fr 1fr; }.media-grid-strain .wide { grid-column: span 2; }
}
@media (max-width: 820px) {
  :root { --nav-height: 68px; }.section { padding: 88px 0; }
  .site-header { background: rgba(11,16,32,.92); border-color: var(--line); backdrop-filter: blur(18px); }
  .menu-open .site-header { height: 100vh; height: 100dvh; background: var(--bg); border-color: transparent; backdrop-filter: none; overflow: hidden; }
  .nav-toggle { display: block; position: relative; z-index: 2; flex: 0 0 auto; }
  .menu-open .nav-toggle { visibility: hidden; }
  .nav-links { counter-reset: mobile-nav; position: absolute; z-index: 1; inset: var(--nav-height) 0 0; width: 100%; min-height: calc(100vh - var(--nav-height)); min-height: calc(100dvh - var(--nav-height)); padding: clamp(24px, 6vh, 54px) max(28px, calc((100vw - var(--container)) / 2)) calc(24px + env(safe-area-inset-bottom)); background: var(--bg); flex-direction: column; align-items: stretch; justify-content: center; gap: 0; overflow-y: auto; overscroll-behavior: contain; visibility: hidden; opacity: 0; transform: translateX(100%); transition: transform .32s ease, opacity .25s ease, visibility 0s linear .32s; }
  .nav-links.open { visibility: visible; opacity: 1; transform: none; transition-delay: 0s; }
  .nav-links.open .nav-close { display: grid; place-items: center; position: fixed; top: 13px; right: 20px; z-index: 1003; width: 42px; height: 42px; padding: 0; border: 1px solid rgba(34,211,238,.38); border-radius: 8px; background: var(--accent-2-soft); color: var(--text); cursor: pointer; }
  .nav-close span { display: block; font-size: 2rem; font-weight: 200; line-height: 1; transform: translateY(-1px); }
  .nav-links a { counter-increment: mobile-nav; display: flex; align-items: center; gap: 20px; width: 100%; padding: clamp(12px, 2.3vh, 19px) 2px; border-bottom: 1px solid var(--line); color: var(--text); font-size: clamp(1.15rem, 5.5vw, 1.65rem); line-height: 1.15; letter-spacing: -.025em; }
  .nav-links a:first-child { border-top: 1px solid var(--line); }
  .nav-links a::before { content: "0" counter(mobile-nav); flex: 0 0 30px; color: var(--accent-2); font: .58rem var(--mono); letter-spacing: .08em; }
  .nav-links a::after { display: none; }
  .nav-links a:hover, .nav-links a.active { padding-left: 10px; color: var(--accent-2); background: var(--accent-2-soft); }
  .nav-toggle[aria-expanded="true"] { border-color: rgba(34,211,238,.38); background: var(--accent-2-soft); }
  .hero { padding-top: 120px; }.hero-layout, .about-layout, .project-layout, .two-column-heading, .interests-layout, .contact-layout { grid-template-columns: 1fr; }.system-visual { min-height: 560px; }.scroll-cue { display: none; }.about-layout, .two-column-heading, .interests-layout, .contact-layout { gap: 40px; }
  .experience-layout { grid-template-columns: 1fr; gap: 38px; }.experience-layout .section-heading { position: static; }.education-path { grid-template-columns: 1fr; }.credentials-grid { grid-template-columns: 1fr 1fr; }.credential-card:last-child { grid-column: span 2; }
  .project-copy { padding: 30px; }.architecture-panel { border-left: 0; border-top: 1px solid var(--line); }.project-grid { grid-template-columns: 1fr; }.project-card:last-child { grid-column: auto; }.vox3d-card { grid-template-columns: minmax(0, 1fr) minmax(210px, .48fr); }.skills-grid { grid-template-columns: 1fr 1fr; }
  .contact-section { padding-block: 100px; }.site-footer .container { align-items: flex-start; flex-direction: column; }
}
@media (max-width: 560px) {
  .container { width: min(calc(100% - 28px), var(--container)); }.section { padding: 72px 0; }.hero-copy h1 { font-size: clamp(3.1rem, 18vw, 5rem); }.hero-role { line-height: 1.9; }.hero-actions { align-items: stretch; flex-direction: column; }.text-link { text-align: center; }.hero-meta { display: grid; grid-template-columns: 1fr 1fr; margin-top: 38px; }.system-visual { min-height: auto; padding: 16px; }.system-core { height: 205px; }.system-flow { grid-template-columns: 1fr; }.visual-footer { display: none; }
  .interest-grid { grid-template-columns: 1fr 1fr; }.interest-grid article:nth-child(3n) { border-right: 1px solid var(--line); }.interest-grid article:nth-child(2n) { border-right: 0; }.interest-grid article:nth-child(n+4) { border-bottom: 1px solid var(--line); }.interest-grid article:nth-child(n+5) { border-bottom: 0; }.project-topline { gap: 15px; }.project-type { text-align: right; }.project-copy { padding: 24px 20px; }.architecture-panel { padding: 20px; }.details-grid { grid-template-columns: 1fr; }.details-grid > div { border-right: 0; border-bottom: 1px solid var(--line); }.media-grid, .media-grid-robot { grid-template-columns: 1fr 1fr; }.media-grid .wide { grid-column: span 2; }.media-grid-strain { grid-template-columns: 1fr; }.media-grid-strain .wide { grid-column: auto; }.project-photo { min-height: 220px; }.media-source { text-align: left; line-height: 1.5; }.media-placeholder { min-height: 145px; }.skills-grid { grid-template-columns: 1fr; }.pending-card, .education-card { grid-template-columns: 1fr; }.experience-timeline::before { left: 5px; }.experience-item { grid-template-columns: 1fr; gap: 12px; padding: 27px 0 27px 26px; }.experience-item::before { top: 34px; left: 1px; }.experience-meta { padding: 0; }.credentials-heading { align-items: flex-start; flex-direction: column; gap: 5px; }.credentials-grid { grid-template-columns: 1fr; }.credential-card:last-child { grid-column: auto; }.contact-details a { grid-template-columns: 76px 1fr auto; gap: 10px; }.contact-details strong { font-size: .72rem; }
  .education-logo { width: 190px; height: 190px; justify-self: center; }
  .cad-toolkit { grid-template-columns: 1fr; }.cad-tool { display: grid; grid-template-columns: 112px 1fr; align-items: center; gap: 12px; padding: 7px; }.cad-logo-stage { height: 62px; }.cad-tool figcaption { padding: 0; }
  .vox3d-card { grid-template-columns: 1fr; gap: 26px; }.vox3d-logo { width: min(100%, 260px); }
  .back-to-top { right: 16px; bottom: max(68px, calc(16px + env(safe-area-inset-bottom))); width: 44px; height: 44px; }
}