:root{--bg: #0f1117;--bg-card: #161b27;--bg-card-hover: #1c2333;--text: #e8eaf0;--text-muted: #8b93a8;--accent: #00c9b1;--border: rgba(255, 255, 255, .07);--font-sans: "Manrope", sans-serif;--font-mono: "JetBrains Mono", monospace;--max-width: 1100px;--radius: 10px}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html{scroll-behavior:smooth}body{background:var(--bg);color:var(--text);font-family:var(--font-sans);font-size:1rem;line-height:1.6;-webkit-font-smoothing:antialiased}a{color:inherit;text-decoration:none}img{display:block;width:100%}.hero{position:relative;height:400px;overflow:hidden;padding:0 2rem}.hero-bg{position:absolute;top:-10px;bottom:-80px;left:0;right:0;background-image:url(/pictures/photo-yann-tremenbert.webp);background-size:cover;background-repeat:no-repeat;background-position:60% 20%;filter:brightness(.55) saturate(.75);will-change:transform}.hero-bg:after{content:"";position:absolute;top:0;right:0;bottom:0;left:0;background:linear-gradient(to right,#0f1117eb,#0f111780 55%,#0f11171a),linear-gradient(to bottom,#0f11174d,#0f111700 40%,#0f111799)}.hero-bg:before{content:"";position:absolute;top:0;right:0;bottom:0;left:0;background:#00c9b112;mix-blend-mode:screen}.nav{position:relative;z-index:10;display:flex;justify-content:space-between;align-items:center;max-width:var(--max-width);margin:0 auto;padding:1.5rem 0}.nav-name{font-weight:600;font-size:.95rem}.nav-hamburger{display:none;flex-direction:column;justify-content:center;gap:5px;background:none;border:none;cursor:pointer;padding:4px}.nav-hamburger span{display:block;width:22px;height:2px;background:var(--text);border-radius:2px;transition:transform .2s,opacity .2s}.nav-hamburger.open span:nth-child(1){transform:translateY(7px) rotate(45deg)}.nav-hamburger.open span:nth-child(2){opacity:0}.nav-hamburger.open span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}.nav-links{display:flex;gap:2rem}.nav-links a{font-size:.9rem;color:var(--text-muted);transition:color .2s}.nav-links a:hover{color:var(--text)}.hero-content{position:relative;z-index:2;max-width:var(--max-width);margin:0 auto;padding:4rem 0}.hero-title{font-size:clamp(2.5rem,6vw,4.5rem);font-weight:300;letter-spacing:-.02em;line-height:1.1}.hero-subtitle{font-family:var(--font-mono);font-size:.95rem;color:var(--accent);margin-top:1rem}.hero-description{font-size:1.15rem;margin-top:1.25rem;background:linear-gradient(90deg,#8b93a8,#8b93a8 35%,#fff,#8b93a8 65%,#8b93a8);background-size:250% auto;-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;animation:shimmer 4s linear infinite}@keyframes shimmer{0%{background-position:150% center}to{background-position:-150% center}}.hero-divider{position:relative;z-index:2;max-width:var(--max-width);margin:0 auto;height:1px;background:var(--border)}.hero-divider:before{content:"";position:absolute;left:0;top:0;width:60px;height:1px;background:var(--accent)}.projects-section,.about-section,.contact-section{max-width:var(--max-width);margin:0 auto;padding:3rem 2rem}.section-title{font-family:var(--font-mono);font-size:.8rem;font-weight:500;color:var(--accent);text-transform:uppercase;letter-spacing:.12em;margin-bottom:2.5rem}.projects-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(480px,1fr));gap:1.5rem}.project-card{background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;cursor:pointer;transition:transform .25s ease,background .25s ease,border-color .25s ease;opacity:0;transform:translateY(20px)}.project-card.visible{opacity:1;transform:translateY(0);transition:opacity .35s ease,transform .35s ease}.project-card:hover{background:var(--bg-card-hover);border-color:#00c9b133;transform:translateY(-3px)}.card-thumbnail{aspect-ratio:16 / 9;overflow:hidden;background:#0a0e18;position:relative}.card-thumbnail:after{content:"";position:absolute;top:0;right:0;bottom:0;left:0;background:#00c9b12e;transition:opacity .4s ease;pointer-events:none}.project-card:hover .card-thumbnail:after{opacity:0}.card-thumbnail img{width:100%;height:100%;object-fit:cover;transition:transform .4s ease}.project-card:hover .card-thumbnail img{transform:scale(1.02)}.card-body{padding:1.5rem}.card-meta{display:flex;align-items:flex-start;justify-content:space-between;gap:1rem;margin-bottom:.75rem}.card-tags{display:flex;flex-wrap:wrap;gap:.4rem}.card-date{font-family:var(--font-mono);font-size:.7rem;color:var(--text-muted);white-space:nowrap;padding-top:.15rem}.tag{font-family:var(--font-mono);font-size:.7rem;color:var(--accent);background:#00c9b114;border:1px solid rgba(0,201,177,.15);border-radius:4px;padding:.2rem .5rem;display:inline-flex;align-items:center;gap:.35rem}.tag--energy{color:#f5c542;background:#f5c54214;border-color:#f5c54233}.tag--maps{color:#4caf7d;background:#4caf7d14;border-color:#4caf7d33}.tag--internet{color:#4a9eff;background:#4a9eff14;border-color:#4a9eff33}.tag--AI{color:#f47067;background:#f4706714;border-color:#f4706733}.tag-dot{width:6px;height:6px;border-radius:50%;background:#4caf7d;animation:pulse-dot 1.8s ease-in-out infinite;flex-shrink:0}@keyframes pulse-dot{0%,to{opacity:1}50%{opacity:.2}}.card-title{font-size:1.15rem;font-weight:600;margin-bottom:.5rem}.card-description{font-size:.9rem;color:var(--text-muted);line-height:1.55}.card-cta{display:inline-block;margin-top:1rem;font-size:.85rem;font-weight:500;color:var(--accent);opacity:0;transform:translate(-4px);transition:opacity .2s ease,transform .2s ease}.project-card:hover .card-cta{opacity:1;transform:translate(0)}.about-text{font-size:1.05rem;color:var(--text-muted);max-width:600px;line-height:1.75}.contact-links{display:flex;gap:1.5rem}.contact-links a{display:inline-flex;align-items:center;gap:.5rem;font-family:var(--font-mono);font-size:.9rem;color:var(--text-muted);border-bottom:1px solid var(--border);padding-bottom:2px;transition:color .2s,border-color .2s}.contact-links a:hover{color:var(--accent);border-color:var(--accent)}.footer{border-top:1px solid var(--border);padding:2rem;text-align:center}.mono{font-family:var(--font-mono);font-size:.8rem;color:var(--text-muted)}@media(max-width:700px){.projects-grid{grid-template-columns:1fr}.nav-hamburger{display:flex}.nav-links{display:none;position:absolute;top:100%;left:0;right:0;flex-direction:column;background:#0f1117f7;padding:1rem 2rem;gap:1.25rem;border-top:1px solid var(--border)}.nav-links.open{display:flex}.hero-content{padding:3rem 0 2.5rem}}