:root {
  --green-900: #052E16;
  --green-800: #14532D;
  --green-700: #15803D;   /* main accent, 5:1 on white */
  --green-600: #16A34A;   /* decorative only */
  --green-300: #86EFAC;
  --green-100: #DCFCE7;
  --green-50: #F0FDF4;
  --ink: #0B1410;         /* the "poco negro": process section + footer */
  --fg: #10231A;
  --muted-fg: #4A5D53;
  --border: #D7E7DD;
  --white: #FFFFFF;
  --wa: #25D366;
  --radius: 16px;
  --shadow: 0 1px 2px rgb(5 46 22 / .06), 0 6px 20px rgb(5 46 22 / .06);
  --shadow-lg: 0 4px 8px rgb(5 46 22 / .08), 0 18px 40px rgb(5 46 22 / .14);
  --ease: cubic-bezier(.2, .8, .2, 1);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 80px; }
body { margin: 0; font: 400 1rem/1.6 "Plus Jakarta Sans", system-ui, sans-serif; color: var(--fg); background: var(--white); overflow-x: hidden; }
h1, h2, h3 { line-height: 1.15; margin: 0 0 .5em; text-wrap: balance; }
h1 { font-size: clamp(2.1rem, 5.2vw, 3.7rem); font-weight: 800; letter-spacing: -.025em; }
h2 { font-size: clamp(1.7rem, 3.6vw, 2.5rem); font-weight: 800; letter-spacing: -.015em; }
h3 { font-size: 1.125rem; font-weight: 700; }
p { margin: 0 0 1em; }
a { color: var(--green-700); }
.container { width: min(1160px, 100% - 32px); margin-inline: auto; }
.icon { width: 20px; height: 20px; fill: none; stroke: currentColor; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; flex: none; }
.icon-fill { width: 20px; height: 20px; fill: currentColor; stroke: none; flex: none; }

:focus-visible { outline: 3px solid var(--green-600); outline-offset: 3px; border-radius: 6px; }
.skip-link { position: absolute; left: 16px; top: -48px; background: var(--green-800); color: #fff; padding: 10px 16px; border-radius: 8px; z-index: 100; }
.skip-link:focus { top: 12px; }

/* Buttons */
.btn { display: inline-flex; align-items: center; gap: 10px; min-height: 48px; padding: 0 24px; border-radius: 999px; font: inherit; font-weight: 700; text-decoration: none; border: 2px solid transparent; cursor: pointer; transition: background .2s, color .2s, border-color .2s, transform .2s var(--ease), box-shadow .2s; }
.btn:hover { transform: translateY(-2px); }
.btn:active { transform: translateY(0); }
.btn-sm { min-height: 44px; padding: 0 18px; }
.btn-lg { min-height: 56px; padding: 0 30px; font-size: 1.05rem; }
.btn-primary { background: var(--green-700); color: #fff; }
.btn-primary:hover { background: var(--green-800); box-shadow: 0 8px 20px rgb(21 128 61 / .3); }
.btn-light { background: #fff; color: var(--green-800); }
.btn-light:hover { box-shadow: 0 10px 24px rgb(0 0 0 / .18); }
.btn-ghost { border-color: rgb(255 255 255 / .55); color: #fff; }
.btn-ghost:hover { background: rgb(255 255 255 / .12); }
.btn-ghost:hover .icon { transform: translateX(3px); }
.btn .icon { transition: transform .2s var(--ease); }

/* Header */
.site-header { position: sticky; top: 0; z-index: 50; background: rgb(255 255 255 / .85); backdrop-filter: blur(12px); border-bottom: 1px solid transparent; transition: border-color .3s, box-shadow .3s; }
.site-header.scrolled { border-color: var(--border); box-shadow: 0 4px 20px rgb(5 46 22 / .06); }
.nav { display: flex; align-items: center; justify-content: space-between; height: 68px; }
.brand { display: flex; align-items: center; gap: 10px; font-weight: 800; color: var(--green-900); text-decoration: none; letter-spacing: .04em; }
.brand small { font-weight: 600; color: var(--muted-fg); }
.brand-light { color: #fff; }
.brand-light small { color: var(--green-300); }
/* Logo: four blocks forming a T tetromino */
.brand-mark { display: grid; grid-template-columns: repeat(3, 9px); gap: 2px; }
.brand-mark i { width: 9px; height: 9px; background: var(--green-600); border-radius: 2px; }
.brand-mark i:last-child { grid-column: 2; background: var(--green-800); }
.brand-light .brand-mark i:last-child { background: var(--green-300); }
.nav-links { display: flex; align-items: center; gap: 28px; }
.nav-links a:not(.btn) { position: relative; color: var(--fg); text-decoration: none; font-weight: 600; padding: 10px 0; }
.nav-links a:not(.btn)::after { content: ""; position: absolute; left: 0; right: 0; bottom: 4px; height: 2px; background: var(--green-600); transform: scaleX(0); transition: transform .25s var(--ease); }
.nav-links a:not(.btn):hover::after { transform: scaleX(1); }
.nav-toggle { display: none; width: 44px; height: 44px; border: 0; background: none; color: var(--green-900); cursor: pointer; }

/* Hero */
.hero { position: relative; overflow: hidden; color: #fff; padding: clamp(72px, 11vw, 140px) 0 clamp(64px, 9vw, 112px);
  background:
    radial-gradient(circle at 85% 20%, rgb(134 239 172 / .25), transparent 45%),
    linear-gradient(135deg, var(--green-800) 0%, var(--green-700) 100%); }
/* faint construction grid */
.hero::before { content: ""; position: absolute; inset: 0; opacity: .08;
  background-image: linear-gradient(#fff 1px, transparent 1px), linear-gradient(90deg, #fff 1px, transparent 1px);
  background-size: 48px 48px; mask-image: linear-gradient(to bottom, #000, transparent); }
.hero-inner { position: relative; }
.hero h1 { max-width: 18ch; }
.hl { color: var(--green-300); }
.hero .lead { max-width: 58ch; font-size: 1.15rem; color: var(--green-100); }
.hero-cta { display: flex; flex-wrap: wrap; gap: 12px; margin: 32px 0 56px; }
.eyebrow { text-transform: uppercase; letter-spacing: .14em; font-size: .8rem; font-weight: 700; color: var(--green-700); margin-bottom: 12px; }
.hero .eyebrow { color: var(--green-300); }
.hero > .container > * { animation: rise .7s var(--ease) both; }
.hero > .container > :nth-child(2) { animation-delay: .1s; }
.hero > .container > :nth-child(3) { animation-delay: .2s; }
.hero > .container > :nth-child(4) { animation-delay: .3s; }
.hero > .container > :nth-child(5) { animation-delay: .4s; }
@keyframes rise { from { opacity: 0; transform: translateY(20px); } }

/* Falling tetromino blocks, 64px grid cells */
.hero-blocks { position: absolute; right: 2%; bottom: 0; width: 320px; height: 384px; }
.hero-blocks i { position: absolute; left: calc(var(--x) * 64px); top: calc(var(--y) * 64px); width: calc(var(--w, 1) * 64px - 6px); height: calc(var(--h, 1) * 64px - 6px);
  background: rgb(255 255 255 / .16); border: 1px solid rgb(255 255 255 / .28); border-radius: 8px;
  animation: drop .9s cubic-bezier(.5, 0, .75, 0) var(--d) both, settle .35s ease-out calc(var(--d) + .9s) both; }
.hero-blocks .b2 { background: rgb(134 239 172 / .35); }
.hero-blocks .b3 { background: rgb(5 46 22 / .35); }
@keyframes drop { from { transform: translateY(-700px); } }
@keyframes settle { 40% { transform: translateY(4px); } }

.stats { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 24px; margin: 0; max-width: 720px; border-top: 1px solid rgb(255 255 255 / .25); padding-top: 28px; }
.stats dt { font-size: .8rem; text-transform: uppercase; letter-spacing: .1em; color: var(--green-300); }
.stats dd { margin: 4px 0; font-size: clamp(1.6rem, 3vw, 2.2rem); font-weight: 800; font-variant-numeric: tabular-nums; }
.stats p { color: var(--green-100); font-size: .9rem; margin: 0; }

/* Clients marquee */
.clients { background: var(--green-50); border-bottom: 1px solid var(--border); padding: 28px 0; overflow: hidden; }
.clients p { color: var(--muted-fg); font-weight: 600; font-size: .9rem; margin-bottom: 12px; }
.marquee { display: flex; width: max-content; animation: marquee 28s linear infinite;
  mask-image: linear-gradient(90deg, transparent, #000 10%, #000 90%, transparent); }
.marquee:hover { animation-play-state: paused; }
.marquee ul { display: flex; gap: 64px; padding-right: 64px; list-style: none; margin: 0; padding-left: 0; }
.marquee li { font-weight: 800; font-size: 1.4rem; color: var(--green-800); letter-spacing: .03em; white-space: nowrap; opacity: .75; }
@keyframes marquee { to { transform: translateX(-50%); } }

/* Sections */
.section { padding: clamp(72px, 9vw, 120px) 0; }
.section-alt { background: var(--green-50); }
.section-dark { background: var(--ink); color: #fff; }
.section-dark .eyebrow { color: var(--green-300); }
.section-head { max-width: 680px; margin-bottom: 48px; }
.section-head p:last-child { color: var(--muted-fg); }

.grid { display: grid; gap: 20px; }
.services { grid-template-columns: repeat(auto-fill, minmax(250px, 1fr)); }
.card { position: relative; background: var(--white); border: 1px solid var(--border); border-radius: var(--radius); padding: 28px; box-shadow: var(--shadow); }
.card p { color: var(--muted-fg); margin: 0; }
.services .card { display: flex; flex-direction: column; transition: transform .3s var(--ease), box-shadow .3s, border-color .3s; }
.services .card:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); border-color: var(--green-300); }
.services .card > p { flex: 1; margin-bottom: 18px; }
.chip { display: inline-grid; place-items: center; width: 52px; height: 52px; border-radius: 14px; background: var(--green-100); color: var(--green-700); margin-bottom: 18px; transition: background .3s, color .3s, transform .3s var(--ease); }
.chip .icon { width: 26px; height: 26px; }
.card:hover .chip { background: var(--green-700); color: #fff; transform: rotate(-6deg) scale(1.05); }
.more { display: inline-flex; align-items: center; gap: 6px; font-weight: 700; text-decoration: none; min-height: 44px; align-self: flex-start; }
.more .icon { width: 18px; transition: transform .2s var(--ease); }
.more:hover .icon { transform: translateX(4px); }
.card-cta { background: linear-gradient(135deg, var(--green-700), var(--green-800)); border-color: transparent; color: #fff; text-decoration: none; }
.card-cta p { color: var(--green-100); }
.card-cta span { display: inline-flex; align-items: center; gap: 8px; font-weight: 700; }

.split { display: grid; grid-template-columns: 1fr 1.2fr; gap: clamp(32px, 6vw, 80px); align-items: start; }
.split > div > p { color: var(--muted-fg); }
.value-cols { display: grid; gap: 20px; }
.value { background: var(--white); border-radius: var(--radius); padding: 24px 28px; border-left: 5px solid var(--green-600); box-shadow: var(--shadow); }
.checks { list-style: none; padding: 0; margin: 0; display: grid; gap: 10px; }
.checks li { display: flex; gap: 10px; align-items: flex-start; }
.checks .icon { color: var(--green-700); margin-top: 3px; }

/* Projects timeline */
.timeline { list-style: none; margin: 0; padding: 0 0 0 28px; display: grid; gap: 20px; position: relative; }
.timeline::before { content: ""; position: absolute; left: 7px; top: 12px; bottom: 12px; width: 2px; background: linear-gradient(var(--green-600), var(--green-100)); }
.project { position: relative; display: grid; grid-template-columns: 140px 1fr; gap: 24px; background: var(--white); border: 1px solid var(--border); border-radius: var(--radius); padding: 28px; box-shadow: var(--shadow); transition: transform .3s var(--ease), box-shadow .3s; }
.project::before { content: ""; position: absolute; left: -28px; top: 32px; width: 16px; height: 16px; border-radius: 50%; background: var(--white); border: 4px solid var(--green-600); }
.project:hover { transform: translateX(6px); box-shadow: var(--shadow-lg); }
.year { font-weight: 800; color: var(--green-700); font-variant-numeric: tabular-nums; }
.role { text-transform: uppercase; font-size: .78rem; letter-spacing: .1em; font-weight: 700; color: var(--muted-fg); margin-bottom: 6px; }
.project p:not(.role) { color: #33463C; }
.tags { display: flex; flex-wrap: wrap; gap: 8px; list-style: none; padding: 0; margin: 0; }
.tags li { background: var(--green-100); color: var(--green-800); font-size: .82rem; font-weight: 600; padding: 4px 12px; border-radius: 999px; }

/* Process */
.steps { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: repeat(5, 1fr); gap: 16px; counter-reset: s; }
.steps li { position: relative; padding-top: 24px; }
.steps li::before, .steps li::after { content: ""; position: absolute; top: 0; left: 0; right: 0; height: 3px; border-radius: 3px; }
.steps li::before { background: rgb(255 255 255 / .12); }
/* the bar fills in as each step reveals */
.steps li::after { background: var(--green-600); transform: scaleX(0); transform-origin: left; transition: transform .8s var(--ease) .2s; }
.steps li.in::after, html:not(.js) .steps li::after { transform: scaleX(1); }
.steps span { display: block; font-weight: 800; font-size: 1.6rem; color: var(--green-300); margin-bottom: 8px; }
.steps p { color: #B9CABF; margin: 0; }

/* Contact band */
.contact-band { display: grid; grid-template-columns: 1.3fr 1fr; gap: clamp(32px, 5vw, 64px); align-items: center; padding: clamp(32px, 6vw, 64px); border-radius: 28px; color: #fff; position: relative; overflow: hidden;
  background: radial-gradient(circle at 100% 0%, rgb(134 239 172 / .3), transparent 50%), linear-gradient(135deg, var(--green-700), var(--green-800)); }
.contact-band .eyebrow { color: var(--green-300); }
.contact-band p { color: var(--green-100); max-width: 46ch; }
.contact-band .btn { margin-top: 12px; }
.contact-info { background: rgb(255 255 255 / .1); border: 1px solid rgb(255 255 255 / .2); border-radius: var(--radius); padding: 28px; }
.contact-list { list-style: none; padding: 0; margin: 0 0 20px; display: grid; gap: 14px; }
.contact-list li { display: flex; align-items: center; gap: 12px; }
.contact-list .icon { color: var(--green-300); }
.contact-list a { color: #fff; font-weight: 600; text-decoration: none; }
.contact-list a:hover { text-decoration: underline; }
.contact-person { border-top: 1px solid rgb(255 255 255 / .2); padding-top: 20px; margin: 0; }

/* Footer */
.site-footer { background: var(--ink); color: #9DB3A6; padding: 32px 0; font-size: .9rem; }
.site-footer .container { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 12px 24px; }
.site-footer p { margin: 0; }

/* Floating WhatsApp button */
.wa-float { position: fixed; right: 20px; bottom: 20px; z-index: 60; width: 60px; height: 60px; border-radius: 50%; display: grid; place-items: center; background: var(--wa); color: #fff; box-shadow: 0 8px 24px rgb(37 211 102 / .45); transition: transform .25s var(--ease); animation: rise .5s var(--ease) 1.2s both; }
.wa-float svg { width: 32px; height: 32px; }
.wa-float:hover { transform: scale(1.08); }
.wa-float::before { content: ""; position: absolute; inset: 0; border-radius: 50%; background: var(--wa); z-index: -1; animation: pulse 2.4s ease-out 2s infinite; }
@keyframes pulse { from { transform: scale(1); opacity: .6; } to { transform: scale(1.7); opacity: 0; } }

/* Scroll reveal (JS adds .js to <html>) */
.js .reveal { opacity: 0; transform: translateY(24px); transition: opacity .6s var(--ease), transform .6s var(--ease); }
.js .reveal.in { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition: none !important; }
  .js .reveal { opacity: 1; transform: none; }
  .steps li::after { transform: scaleX(1); }
}

/* Responsive */
@media (max-width: 960px) {
  .steps { grid-template-columns: repeat(2, 1fr); row-gap: 32px; }
  .split, .contact-band { grid-template-columns: 1fr; }
  .hero-blocks { opacity: .5; }
}
@media (max-width: 760px) {
  .nav-toggle { display: inline-grid; place-items: center; }
  .nav-links { display: none; position: absolute; top: 68px; left: 0; right: 0; flex-direction: column; align-items: stretch; gap: 0; background: #fff; border-bottom: 1px solid var(--border); padding: 8px 16px 16px; }
  .nav-links.open { display: flex; }
  .nav-links a:not(.btn) { padding: 14px 0; border-bottom: 1px solid var(--border); }
  .nav-links .btn { margin-top: 12px; justify-content: center; }
  .stats { grid-template-columns: 1fr 1fr; gap: 16px; }
  .project { grid-template-columns: 1fr; gap: 8px; }
  .steps { grid-template-columns: 1fr; }
  .hero-blocks { transform: scale(.55); transform-origin: bottom right; opacity: .35; }
  .wa-float { right: 16px; bottom: 16px; }
}