:root{color-scheme:light;--bg:#fffaf8;--surface:#fff;--soft:#f8ece8;--ink:#302b31;--muted:#67575c;--accent:#a85855;--accent-ink:#fff;--line:#e8d7d1;--warm:#b97067;--shadow:0 20px 60px #8f5e5a33}
    :root[data-theme=dark]{color-scheme:dark;--bg:#281f26;--surface:#342831;--soft:#3b2e35;--ink:#f8e9e8;--muted:#cbb3b6;--accent:#ffb4aa;--accent-ink:#281f26;--line:#64505b;--warm:#ffc1b4;--shadow:0 20px 60px #0004}
    *{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:92px}body{margin:0;background:var(--bg);color:var(--ink);font:16px/1.65 "Manrope",system-ui,sans-serif}button,a,summary{font:inherit}a{color:var(--accent);text-underline-offset:4px}a:hover{opacity:.82}a:focus-visible,button:focus-visible,summary:focus-visible{outline:3px solid var(--warm);outline-offset:4px;border-radius:5px}button{cursor:pointer}.wrap{width:min(1120px,calc(100% - 40px));margin:auto}.skip{position:absolute;left:12px;top:-80px;background:var(--surface);padding:10px;z-index:20}.skip:focus{top:12px}
    .topbar{position:sticky;top:0;z-index:10;background:var(--bg);border-bottom:1px solid var(--line)}.nav{min-height:72px;display:flex;align-items:center;gap:20px}.brand{font-weight:800;letter-spacing:-.045em;text-decoration:none;color:var(--ink);white-space:nowrap}.navlinks{display:flex;align-items:center;gap:13px;margin-left:auto}.navlinks a{text-decoration:none;color:var(--ink);font-size:.82rem;font-weight:650;white-space:nowrap}.navlinks .nav-cv{border:1px solid var(--accent);border-radius:100px;padding:6px 12px;color:var(--accent);font-weight:800}.switches{display:flex;gap:7px}.switch{border:1px solid var(--line);background:var(--surface);color:var(--ink);border-radius:100px;padding:6px 12px;min-height:39px;font-size:.84rem;font-weight:700}.switch[aria-pressed=true]{border-color:var(--accent)}
    .hero{padding:95px 0 80px;display:grid;grid-template-columns:minmax(0,1.45fr) minmax(260px,.65fr);gap:55px;align-items:center}.eyebrow,.label{font-size:.76rem;text-transform:uppercase;letter-spacing:.18em;font-weight:800;color:var(--accent)}h1,h2,h3,p{margin-top:0}h1{font-size:clamp(3.6rem,8vw,7.5rem);line-height:.97;letter-spacing:-.085em;margin:16px 0 26px}h1 span{color:var(--accent)}.lead{font-size:clamp(1.1rem,2vw,1.37rem);max-width:660px;color:var(--muted);line-height:1.55}.actions,.socials{display:flex;flex-wrap:wrap;gap:11px;margin-top:28px}.btn{display:inline-flex;align-items:center;justify-content:center;gap:10px;border-radius:8px;padding:11px 17px;font-size:.92rem;font-weight:750;text-decoration:none;min-height:46px}.btn.primary{background:var(--accent);color:var(--accent-ink)}.btn.secondary{background:var(--surface);border:1px solid var(--line);color:var(--ink)}.btn svg,.social svg{width:19px;height:19px;fill:currentColor;flex:none}
    .profile{background:var(--surface);border:1px solid var(--line);box-shadow:var(--shadow);border-radius:18px;padding:27px}.profile p{color:var(--muted);font-size:.92rem}.profile strong{display:block;margin-bottom:5px}.profile .socials{margin-top:18px}.social{display:inline-flex;align-items:center;gap:8px;border:1px solid var(--line);border-radius:8px;background:var(--surface);font-weight:750;text-decoration:none;color:var(--ink);padding:9px 13px}
    section{padding:75px 0;border-top:1px solid var(--line)}.sectionhead{max-width:770px;margin-bottom:31px}h2{font-size:clamp(2rem,4vw,3.2rem);letter-spacing:-.055em;line-height:1.12;margin:8px 0 15px}.sectionhead p,.card p,.timeline p{color:var(--muted)}.grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}.card{background:var(--surface);border:1px solid var(--line);border-radius:15px;padding:27px;min-width:0}.card h3{font-size:1.21rem;letter-spacing:-.025em;margin:0 0 11px}.card p{margin-bottom:12px}.card .meta{color:var(--warm);font-size:.8rem;font-weight:800;text-transform:uppercase;letter-spacing:.09em}.card details{border-top:1px solid var(--line);margin-top:20px;padding-top:14px}.card summary{color:var(--accent);font-weight:760;cursor:pointer;list-style:none;display:flex;justify-content:space-between;gap:12px}.card summary::-webkit-details-marker{display:none}.card summary:after{content:'+';font-size:1.35rem;line-height:1}.card details[open] summary:after{content:'−'}.detail{padding-top:15px;color:var(--muted)}.detail ul{padding-left:21px;margin:0}.detail li+li{margin-top:7px}.status{display:inline-block;background:var(--soft);border:1px solid var(--line);padding:2px 8px;border-radius:5px;font-size:.76rem;font-weight:700;color:var(--ink)}
    .timeline{display:grid;grid-template-columns:1fr;gap:14px}.experience-link{display:block;color:inherit;text-decoration:none}.timeline article{background:var(--surface);border:1px solid var(--line);border-left:4px solid var(--accent);border-radius:12px;padding:24px;transition:transform .18s ease,box-shadow .18s ease,border-color .18s ease}.experience-link:hover{opacity:1}.experience-link:hover article{transform:translateY(-2px);box-shadow:var(--shadow);border-color:var(--accent)}.experience-number-date{display:flex;align-items:center;gap:8px;color:var(--accent);font-size:.81rem;font-weight:800;text-transform:uppercase;letter-spacing:.07em}.timeline .step,.timeline .date{position:static;color:inherit;font-size:inherit;font-weight:inherit}.timeline h3{font-size:1.25rem;margin:12px 0 2px}.timeline h4{color:var(--muted);font-size:.94rem;margin:0 0 14px}.timeline p{margin:0}.timeline .read-more{display:inline-block;margin-top:16px;color:var(--accent);font-size:.86rem;font-weight:800}.skills{display:flex;gap:9px;flex-wrap:wrap}.chip{background:var(--soft);border:1px solid var(--line);border-radius:7px;padding:6px 11px;font-size:.86rem;font-weight:650}.columns{display:grid;grid-template-columns:1fr 1fr;gap:30px}.columns h3{margin:0 0 12px}.contact{background:var(--soft);border-top:1px solid var(--line)}footer{border-top:1px solid var(--line);padding:24px 0;color:var(--muted);font-size:.85rem}.footerinner{display:flex;justify-content:space-between;gap:15px;flex-wrap:wrap}
    @media(max-width:950px){.nav{flex-wrap:wrap;gap:10px;padding:12px 0}.navlinks{order:3;width:100%;margin:0;overflow-x:auto;justify-content:flex-start;gap:18px;padding:4px 2px 7px;scrollbar-width:thin}.navlinks a{font-size:.86rem}.switches{margin-left:auto}}@media(max-width:800px){.hero{grid-template-columns:1fr;padding:62px 0}.profile{max-width:520px}.grid,.timeline,.columns{grid-template-columns:1fr}section{padding:56px 0}}@media(max-width:370px){.wrap{width:min(100% - 28px,1120px)}.brand{font-size:.91rem}.switch{padding:5px 8px}}
    @media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
    .hero{background-color:#302b31;background-image:linear-gradient(#302b31d1,#302b31d1),url('img/data-banner.png');background-position:center;background-size:cover;background-repeat:no-repeat;border-radius:18px;margin:36px 0;padding:75px 40px}
    .hero-intro{color:#fff7f3}
    .hero .eyebrow,.hero h1 span{color:#ffd0c5}
    .hero .lead{color:#fff0eb}
    .hero-portrait{display:block;width:180px;height:180px;aspect-ratio:1;object-fit:cover;object-position:center;border-radius:50%;border:6px solid #fff7f3;box-shadow:0 12px 32px #8f5e5a33;margin-bottom:22px}
    :root[data-theme=dark] .hero{background-image:linear-gradient(#281f26cc,#281f26cc),url('img/data-banner.png')}
    :root[data-theme=dark] .hero-portrait{border-color:#b98580}
    @media(max-width:800px){.hero{margin:22px 0;padding:52px 24px}}
    .learning-block+.learning-block{margin-top:48px}.learning-block>h3{font-size:1.45rem;margin:0 0 18px}.education-grid,.certification-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}.certification-grid{grid-template-columns:1fr}.learning-card{background:var(--surface);border:1px solid var(--line);border-radius:15px;padding:25px}.learning-card h4{font-size:1.08rem;line-height:1.4;margin:7px 0}.learning-card p{color:var(--muted);margin:0}.learning-date{color:var(--accent);font-size:.78rem;font-weight:800;letter-spacing:.07em;text-transform:uppercase}.certificate-card{display:grid;grid-template-columns:190px 1fr;gap:24px;align-items:center}.certificate-visual{display:grid;place-items:center;width:100%;min-height:120px;padding:0;overflow:hidden;border:1px dashed var(--line);border-radius:10px;background:var(--soft);color:var(--muted);font-size:.75rem;font-weight:750;text-transform:uppercase;letter-spacing:.08em}.certificate-visual:not(:disabled){border-style:solid}.certificate-visual:not(:disabled):hover{opacity:.86}.certificate-visual img{display:block;width:100%;height:120px;object-fit:contain}.learning-card .credential{font-size:.82rem;margin-top:9px;overflow-wrap:anywhere}.certificate-modal{width:min(1000px,calc(100% - 32px));max-height:92vh;padding:52px 18px 18px;border:0;border-radius:16px;background:var(--surface);color:var(--ink);box-shadow:0 25px 80px #0008}.certificate-modal::backdrop{background:#181216d9}.certificate-modal h2{margin:0 40px 20px 0;font-size:1.35rem}.certificate-modal img{display:block;max-width:100%;max-height:72vh;margin:auto;object-fit:contain}.modal-close{position:absolute;right:15px;top:10px;border:0;background:transparent;color:var(--ink);font-size:2rem;line-height:1}@media(max-width:700px){.education-grid{grid-template-columns:1fr}.certificate-card{grid-template-columns:1fr}.certificate-visual{min-height:100px}}
    .stack-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}.stack-category{padding:23px;border:1px solid var(--line);border-radius:15px;background:var(--surface)}.stack-category h4{margin:0 0 14px;font-size:1rem;line-height:1.35;color:var(--ink)}@media(max-width:700px){.stack-grid{grid-template-columns:1fr}}

.hero-portrait{margin-bottom:28px}.hero-intro h1{margin-top:0}.copy-hint{font-size:.75rem;color:var(--accent);font-weight:800;margin-left:5px}.copy-status{display:block;min-height:1.4em;margin-top:8px;color:var(--accent);font-size:.85rem;font-weight:700}.gmail-icon{width:20px;height:20px;flex:none}@media(max-width:600px){#copy-email{max-width:100%;overflow-wrap:anywhere}}

.profile .profile-heading{font-size:clamp(1.35rem,2.4vw,1.8rem);line-height:1.2;letter-spacing:-.035em;margin-bottom:14px}

/* The five main sections alternate the two existing palette backgrounds. */
#sobre-mi,#proyectos,#experiencia,#herramientas{position:relative;isolation:isolate}
#sobre-mi::before,#proyectos::before,#experiencia::before,#herramientas::before{content:'';position:absolute;z-index:-1;top:0;bottom:0;left:50%;width:100vw;transform:translateX(-50%)}
#sobre-mi::before,#experiencia::before{background:var(--soft)}
#proyectos::before,#herramientas::before{background:var(--bg)}
#contacto{background:var(--soft)}

/* Project cards: the complete summary is the open/close target. */
#proyectos .project-card{padding:0;overflow:hidden;transition:border-color .2s ease,box-shadow .2s ease,transform .2s ease}
#proyectos .project-card:hover{border-color:var(--accent);box-shadow:var(--shadow);transform:translateY(-2px)}
#proyectos .project-card>summary{display:block;list-style:none;padding:27px;cursor:pointer;color:var(--ink)}
#proyectos .project-card>summary::-webkit-details-marker{display:none}
#proyectos .project-card>summary::after{content:none}
#proyectos .project-card .meta{display:block}
#proyectos .project-card h3{margin:8px 0 11px}
#proyectos .project-card .status{margin:0 0 12px}
#proyectos .project-card p{margin:0;color:var(--muted)}
#proyectos .project-toggle{display:inline-flex;align-items:center;gap:8px;margin-top:19px;color:var(--accent);font-size:.88rem;font-weight:800}
#proyectos .project-toggle::after{content:'+';font-size:1.2rem;line-height:1}
#proyectos .project-card[open] .project-toggle::after{content:'−'}
#proyectos .project-card>.detail{margin:0 27px 27px;padding:18px 0 0;border-top:1px solid var(--line);animation:project-reveal .2s ease}
#proyectos .project-card .detail h4{margin:0 0 10px;font-size:1rem;line-height:1.4;color:var(--ink)}
#proyectos .project-card .detail p+p{margin-top:11px}
@keyframes project-reveal{from{opacity:0;transform:translateY(-5px)}to{opacity:1;transform:translateY(0)}}
@media(max-width:700px){#proyectos .project-card>summary{padding:22px}#proyectos .project-card>.detail{margin:0 22px 22px}}
@media(prefers-reduced-motion:reduce){#proyectos .project-card{transition:none}#proyectos .project-card>.detail{animation:none}}