/* ===== Tokens ===== */
:root{
  --bg:#f7f8fb; --surface:#ffffff; --surface-2:#eef1f7; --text:#151a2d; --muted:#5b6380;
  --line:#dde2ee; --accent:#2f6bff; --accent-2:#f2c811; --accent-3:#7b5cff; --ok:#12a37a;
  --dark-band:#11152a; --dark-text:#e9ecf7; --dark-muted:#9aa3c2;
  --radius:16px; --shadow:0 10px 30px -12px rgba(20,30,70,.18);
  --font:'Inter',system-ui,sans-serif; --display:'Poppins',var(--font);
}
@media (prefers-color-scheme: dark){
  :root:not([data-theme="light"]){
    --bg:#0c0f1d; --surface:#151a2e; --surface-2:#1c2238; --text:#e9ecf7; --muted:#9aa3c2;
    --line:#2a3150; --accent:#6f97ff; --dark-band:#070914; --shadow:0 10px 30px -12px rgba(0,0,0,.6);
  }
}
:root[data-theme="dark"]{
  --bg:#0c0f1d; --surface:#151a2e; --surface-2:#1c2238; --text:#e9ecf7; --muted:#9aa3c2;
  --line:#2a3150; --accent:#6f97ff; --dark-band:#070914; --shadow:0 10px 30px -12px rgba(0,0,0,.6);
}

/* ===== Base ===== */
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{font-family:var(--font);background:var(--bg);color:var(--text);line-height:1.6;transition:background .3s,color .3s}
a{color:var(--accent);text-decoration:none}
img{max-width:100%;display:block}
.wrap{max-width:1140px;margin:0 auto;padding:0 20px}
h1,h2,h3,h4{font-family:var(--display);line-height:1.2}
section{padding:88px 0}
.eyebrow{font-size:.8rem;letter-spacing:.14em;text-transform:uppercase;color:var(--accent);font-weight:700}
.sec-title{font-size:clamp(1.8rem,3.5vw,2.5rem);margin:.3rem 0 .6rem}
.sec-sub{color:var(--muted);max-width:640px}
.center{text-align:center}.center .sec-sub{margin:0 auto}

/* bilingual */
html[data-lang="es"] [lang="en"]:not(html){display:none!important}
html[data-lang="en"] [lang="es"]:not(html){display:none!important}

/* ===== Nav ===== */
.nav{position:sticky;top:0;z-index:50;background:color-mix(in srgb,var(--bg) 85%,transparent);backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}
.nav .wrap{display:flex;align-items:center;justify-content:space-between;height:64px;gap:12px}
.logo{font-family:var(--display);font-weight:700;font-size:1.15rem;color:var(--text)}
.logo b{color:var(--accent)}
.nav-links{display:flex;gap:22px;list-style:none}
.nav-links a{color:var(--muted);font-size:.92rem;font-weight:500}
.nav-links a:hover{color:var(--text)}
.nav-tools{display:flex;gap:8px}
.chip-btn{border:1px solid var(--line);background:var(--surface);color:var(--text);border-radius:999px;padding:6px 12px;font:600 .8rem var(--font);cursor:pointer}
.chip-btn:hover{border-color:var(--accent)}
.menu-btn{display:none}
@media(max-width:860px){
  .nav-links{display:none;position:absolute;top:64px;left:0;right:0;flex-direction:column;background:var(--surface);padding:16px 20px;border-bottom:1px solid var(--line)}
  .nav-links.open{display:flex}
  .menu-btn{display:inline-block}
}

/* ===== Hero ===== */
.hero{padding:72px 0 64px}
.hero .wrap{display:grid;grid-template-columns:1.25fr .75fr;gap:48px;align-items:center}
.hero h1{font-size:clamp(2.1rem,5vw,3.4rem);font-weight:700}
.hero h1 .hl{background:linear-gradient(90deg,var(--accent),var(--accent-3));-webkit-background-clip:text;background-clip:text;color:transparent}
.hero p.lead{color:var(--muted);font-size:1.08rem;margin:18px 0 26px;max-width:560px}
.roles{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:28px}
.role{font-size:.8rem;font-weight:600;padding:6px 12px;border-radius:999px;background:var(--surface-2);color:var(--text);border:1px solid var(--line)}
.btns{display:flex;gap:12px;flex-wrap:wrap}
.btn{display:inline-flex;align-items:center;gap:8px;padding:12px 22px;border-radius:12px;font-weight:600;font-size:.95rem;border:1px solid transparent;cursor:pointer}
.btn-primary{background:var(--accent);color:#fff}
.btn-primary:hover{filter:brightness(1.08)}
.btn-ghost{border-color:var(--line);color:var(--text);background:var(--surface)}
.avatar{position:relative;justify-self:center;width:min(300px,70vw);aspect-ratio:1;border-radius:50%;padding:6px;background:conic-gradient(var(--accent),var(--accent-3),var(--accent-2),var(--accent))}
.avatar img,.avatar .initials{width:100%;height:100%;border-radius:50%;object-fit:cover;background:var(--surface);border:6px solid var(--bg)}
.avatar .initials{display:flex;align-items:center;justify-content:center;font:700 4rem var(--display);color:var(--accent)}
.stats{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-top:56px}
.stat{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:18px}
.stat b{font:700 1.7rem var(--display);display:block}
.stat span{color:var(--muted);font-size:.85rem}
@media(max-width:860px){.hero .wrap{grid-template-columns:1fr}.avatar{order:-1;width:200px}.stats{grid-template-columns:repeat(2,1fr)}}

/* ===== Stack ===== */
.stack-groups{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:18px;margin-top:40px}
.stack-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:22px}
.stack-card h4{font-size:1rem;margin-bottom:14px;display:flex;align-items:center;gap:10px}
.dot{width:10px;height:10px;border-radius:50%}
.tags{display:flex;flex-wrap:wrap;gap:7px}
.tag{font-size:.78rem;padding:5px 10px;border-radius:8px;background:var(--surface-2);color:var(--text);font-weight:500}

/* ===== Projects (dark band) ===== */
.band{background:var(--dark-band);color:var(--dark-text)}
.band .sec-sub{color:var(--dark-muted)}
.filters{display:flex;flex-wrap:wrap;gap:8px;justify-content:center;margin:30px 0 36px}
.filter{border:1px solid #2e3657;background:transparent;color:var(--dark-muted);border-radius:999px;padding:8px 16px;font:600 .85rem var(--font);cursor:pointer}
.filter.active,.filter:hover{background:#fff;color:#11152a;border-color:#fff}
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(310px,1fr));gap:20px}
.card{background:#171c33;border:1px solid #262d4b;border-radius:var(--radius);overflow:hidden;display:flex;flex-direction:column;transition:transform .25s,border-color .25s}
.card:hover{transform:translateY(-4px);border-color:#4a5690}
.card.hide{display:none}
.thumb{height:150px;position:relative;display:flex;align-items:flex-end;padding:14px}
.thumb .cat{font-size:.7rem;font-weight:700;letter-spacing:.08em;text-transform:uppercase;background:rgba(0,0,0,.35);color:#fff;padding:4px 10px;border-radius:6px;backdrop-filter:blur(4px)}
.thumb svg{position:absolute;inset:0;width:100%;height:100%}
.thumb .cat{position:relative}
.t-bi{background:linear-gradient(135deg,#f2c811,#e8890c)}
.t-ux{background:linear-gradient(135deg,#7b5cff,#e05cff)}
.t-dev{background:linear-gradient(135deg,#2f6bff,#17c3d6)}
.t-auto{background:linear-gradient(135deg,#0f9d74,#2f6bff)}
.t-edu{background:linear-gradient(135deg,#ff6b6b,#ffb347)}
.card-body{padding:18px 20px 20px;display:flex;flex-direction:column;gap:10px;flex:1}
.card h3{font-size:1.08rem;color:#fff}
.card .org{font-size:.8rem;color:var(--dark-muted)}
.card p{font-size:.9rem;color:#c3c9e0}
.card ul{font-size:.86rem;color:#c3c9e0;padding-left:18px}
.card .tags .tag{background:#232a47;color:#cfd5ee}
.card .more{margin-top:auto;padding-top:8px;display:flex;gap:14px;font-size:.88rem;font-weight:600}
.card .more a{color:#8fb0ff}
.featured{grid-column:1/-1;display:grid;grid-template-columns:1fr 1fr}
.featured .thumb{height:auto;min-height:260px}
@media(max-width:760px){.featured{grid-template-columns:1fr}.featured .thumb{min-height:180px}}
.badge-star{display:inline-block;font-size:.72rem;font-weight:700;color:#11152a;background:var(--accent-2);padding:3px 9px;border-radius:6px;width:max-content}

/* ===== Timeline ===== */
.timeline{position:relative;margin-top:40px;padding-left:28px}
.timeline::before{content:"";position:absolute;left:7px;top:6px;bottom:6px;width:2px;background:var(--line)}
.tl-item{position:relative;margin-bottom:26px;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:20px 22px}
.tl-item::before{content:"";position:absolute;left:-27px;top:24px;width:14px;height:14px;border-radius:50%;background:var(--accent);border:3px solid var(--bg)}
.tl-head{display:flex;justify-content:space-between;flex-wrap:wrap;gap:6px}
.tl-head h3{font-size:1.05rem}
.tl-date{font-size:.82rem;color:var(--muted);font-weight:600}
.tl-org{color:var(--accent);font-weight:600;font-size:.9rem;margin:2px 0 8px}
.tl-item ul{padding-left:18px;color:var(--muted);font-size:.92rem}

/* ===== Education ===== */
.two-col{display:grid;grid-template-columns:1fr 1fr;gap:28px;margin-top:40px}
@media(max-width:860px){.two-col{grid-template-columns:1fr}}
.list-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:24px}
.list-card h3{font-size:1.1rem;margin-bottom:16px}
.edu{display:flex;gap:14px;padding:12px 0;border-top:1px solid var(--line)}
.edu:first-of-type{border-top:0}
.edu .yr{min-width:86px;font-size:.8rem;font-weight:700;color:var(--accent)}
.edu b{display:block;font-size:.95rem}
.edu span{color:var(--muted);font-size:.86rem}

/* ===== Contact ===== */
.contact-box{background:linear-gradient(135deg,var(--accent),var(--accent-3));color:#fff;border-radius:24px;padding:48px;text-align:center}
.contact-box h2{font-size:clamp(1.6rem,3.5vw,2.3rem)}
.contact-box p{opacity:.9;margin:10px auto 26px;max-width:560px}
.contact-box .btn{background:#fff;color:#1b2252}
.contact-box .btn-ghost{background:transparent;color:#fff;border-color:rgba(255,255,255,.5)}
footer{padding:30px 0;text-align:center;color:var(--muted);font-size:.85rem}

/* ===== Case study page ===== */
.case-hero{padding:64px 0 40px;border-bottom:1px solid var(--line)}
.case-hero h1{font-size:clamp(2rem,4.5vw,3rem);margin:.4rem 0 1rem}
.meta{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-top:30px}
.meta div{background:var(--surface);border:1px solid var(--line);border-radius:12px;padding:14px}
.meta small{color:var(--muted);font-size:.75rem;text-transform:uppercase;letter-spacing:.08em;font-weight:700}
.meta p{font-weight:600;font-size:.92rem}
@media(max-width:760px){.meta{grid-template-columns:1fr 1fr}}
.steps-nav{display:flex;gap:6px;overflow-x:auto;padding:16px 0;position:sticky;top:64px;background:var(--bg);z-index:10;border-bottom:1px solid var(--line)}
.steps-nav a{white-space:nowrap;font-size:.82rem;font-weight:600;color:var(--muted);padding:6px 12px;border-radius:999px;border:1px solid var(--line)}
.steps-nav a:hover{color:var(--text);border-color:var(--accent)}
.step{padding:64px 0;border-bottom:1px solid var(--line)}
.step-num{font:700 .85rem var(--display);color:#fff;background:var(--accent);width:34px;height:34px;border-radius:10px;display:inline-flex;align-items:center;justify-content:center;margin-bottom:12px}
.step h2{font-size:1.7rem;margin-bottom:10px}
.step .sec-sub{margin-bottom:26px}
.panel{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:22px;box-shadow:var(--shadow)}
.cols-2{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.cols-3{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}
@media(max-width:860px){.cols-2,.cols-3{grid-template-columns:1fr}}
.panel h4{font-size:1rem;margin-bottom:8px}
.panel p,.panel li{color:var(--muted);font-size:.92rem}
.panel ul{padding-left:18px}
pre{background:#0e1224;color:#d6def7;border-radius:12px;padding:18px;overflow-x:auto;font:500 .84rem/1.6 'JetBrains Mono',ui-monospace,monospace}
pre .k{color:#ffcb6b}pre .f{color:#82aaff}pre .s{color:#c3e88d}pre .c{color:#697098}
table.clean{width:100%;border-collapse:collapse;font-size:.88rem}
table.clean th,table.clean td{text-align:left;padding:9px 10px;border-bottom:1px solid var(--line)}
table.clean th{color:var(--muted);font-size:.75rem;text-transform:uppercase;letter-spacing:.06em}
.wire{width:100%;height:auto}
.wire rect{fill:var(--surface-2);stroke:var(--line)}
.wire text{fill:var(--muted);font:600 11px var(--font)}

/* dashboard */
.dash{background:var(--surface);border:1px solid var(--line);border-radius:20px;padding:20px;box-shadow:var(--shadow)}
.dash-top{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:12px;margin-bottom:18px}
.dash-top h3{font-size:1.1rem}
.seg{display:inline-flex;background:var(--surface-2);border-radius:10px;padding:4px}
.seg button{border:0;background:transparent;color:var(--muted);font:600 .82rem var(--font);padding:7px 12px;border-radius:8px;cursor:pointer}
.seg button.on{background:var(--surface);color:var(--text);box-shadow:0 1px 4px rgba(0,0,0,.12)}
.kpis{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin-bottom:16px}
.kpi{background:var(--surface-2);border-radius:12px;padding:14px;border-left:4px solid var(--accent)}
.kpi small{color:var(--muted);font-size:.75rem;font-weight:600}
.kpi b{display:block;font:700 1.5rem var(--display)}
@media(max-width:760px){.kpis{grid-template-columns:1fr 1fr}}
.charts{display:grid;grid-template-columns:1.3fr 1fr;gap:16px}
.charts .box{background:var(--surface-2);border-radius:12px;padding:14px;min-height:280px;position:relative}
.charts .box h5{font-size:.85rem;margin-bottom:8px;color:var(--muted)}
.charts .box.wide{grid-column:1/-1}
@media(max-width:860px){.charts{grid-template-columns:1fr}}
.insight{display:flex;gap:12px;align-items:flex-start}
.insight b{font:700 1.4rem var(--display);color:var(--accent);min-width:64px}
.note{font-size:.8rem;color:var(--muted);margin-top:12px}
.pbi-embed{aspect-ratio:16/9;width:100%;border:2px dashed var(--line);border-radius:16px;display:flex;align-items:center;justify-content:center;text-align:center;color:var(--muted);padding:20px}
.back{display:inline-flex;gap:6px;font-weight:600;font-size:.9rem;margin-bottom:10px}
.cols-2>*,.cols-3>*,.charts>*{min-width:0}

/* ===== Hero location ===== */
.loc{color:var(--muted);font-size:.92rem;margin:-10px 0 18px}
.loc a{color:var(--muted);text-decoration:underline}

/* ===== Microsoft + AI ===== */
.eco{display:grid;grid-template-columns:1.2fr 1fr;gap:20px;margin-top:20px}
@media(max-width:860px){.eco{grid-template-columns:1fr}}
.eco h4{display:flex;align-items:center;gap:10px;font-size:1.05rem;margin-bottom:8px}
.eco .tags{margin-top:14px}
.ms-grid{display:inline-grid;grid-template-columns:9px 9px;gap:2px}
.ms-grid i{width:9px;height:9px;display:block}
.ms-grid i:nth-child(1){background:#f25022}.ms-grid i:nth-child(2){background:#7fba00}
.ms-grid i:nth-child(3){background:#00a4ef}.ms-grid i:nth-child(4){background:#ffb900}
.ai-badges{display:grid;gap:12px;margin-top:10px}
.ai-badge{display:flex;align-items:center;gap:14px;background:var(--surface-2);border:1px solid var(--line);border-radius:14px;padding:14px}
.ai-badge b{display:block;font-size:.98rem}
.ai-badge small{color:var(--muted);font-size:.82rem}
.ai-ic{width:44px;height:44px;border-radius:12px;display:flex;align-items:center;justify-content:center;font-size:1.3rem;color:#fff;flex:none}
.ai-copilot{background:linear-gradient(135deg,#0078d4,#7b5cff 55%,#e05cff)}
.ai-claude{background:#d97757}

/* ===== Websites ===== */
#websites{background:var(--bg)}
.sites{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:20px;margin-top:36px}
.site{display:flex;flex-direction:column;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;color:var(--text);transition:transform .25s,box-shadow .25s}
.site:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
.site-thumb{height:150px;position:relative;display:flex;align-items:center;justify-content:center;padding-top:26px}
.browser{position:absolute;top:12px;left:12px;right:12px;height:24px;background:rgba(255,255,255,.92);border-radius:7px;display:flex;align-items:center;gap:10px;padding:0 10px}
.browser .dots{display:flex;gap:4px}.browser .dots i{width:7px;height:7px;border-radius:50%;background:#c9ced8;display:block}
.browser .addr{font:500 .72rem 'JetBrains Mono',monospace;color:#3b4256}
.site-name{font:700 1.5rem var(--display);color:#fff;text-shadow:0 2px 12px rgba(0,0,0,.25)}
.site-body{padding:16px 18px 18px;display:flex;flex-direction:column;gap:8px;flex:1}
.site-plat{font-size:.72rem;font-weight:700;letter-spacing:.06em;text-transform:uppercase;color:var(--accent)}
.site-body p{font-size:.9rem;color:var(--muted)}
.site-link{margin-top:auto;font-weight:600;font-size:.88rem;color:var(--accent)}