/* Thera Soft S.R.L. — estética de plano técnico / instrumentación industrial */
:root {
  --paper: #f3f1e8;
  --surface: #fbfaf5;
  --ink: #0b1f3a;
  --muted: #46566e;
  --blue: #003d80;
  --accent: #4a6600;       /* verde de texto (AA sobre papel) */
  --green: #7da800;        /* verde de marca, solo decorativo */
  --line: rgba(0, 61, 128, .2);
  --line-strong: rgba(0, 61, 128, .55);
  --grid: rgba(0, 61, 128, .06);
  --btn-bg: #003d80;
  --btn-fg: #ffffff;
  --focus: #b45309;
  --f-display: "Archivo", "Arial Narrow", "Helvetica Neue", Arial, sans-serif;
  --f-mono: "IBM Plex Mono", ui-monospace, "Cascadia Mono", Consolas, monospace;
  --wrap: 1200px;
  --gut: clamp(1rem, 4vw, 2.5rem);
}
@media (prefers-color-scheme: dark) {
  :root {
    --paper: #06142b;
    --surface: #0a1d3b;
    --ink: #e8eef7;
    --muted: #a3b3ca;
    --blue: #7fb0f0;
    --accent: #a9d52c;
    --green: #a9d52c;
    --line: rgba(150, 190, 255, .2);
    --line-strong: rgba(150, 190, 255, .5);
    --grid: rgba(150, 190, 255, .06);
    --btn-bg: #a9d52c;
    --btn-fg: #06142b;
    --focus: #fbbf24;
  }
}
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 5rem; -webkit-text-size-adjust: 100%; }
body {
  margin: 0; background: var(--paper); color: var(--ink);
  font-family: var(--f-display); font-stretch: 100%; font-size: 1.0625rem; line-height: 1.6;
  background-image:
    linear-gradient(var(--grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid) 1px, transparent 1px);
  background-size: 32px 32px;
  overflow-x: hidden;
}
img, svg { max-width: 100%; display: block; }
a { color: inherit; }
:focus-visible { outline: 3px solid var(--focus); outline-offset: 3px; border-radius: 2px; }
.skip { position: absolute; left: -999px; top: 0; background: var(--btn-bg); color: var(--btn-fg); padding: .6rem 1rem; z-index: 100; }
.skip:focus { left: 0; }
.wrap { width: min(100% - 2 * var(--gut), var(--wrap)); margin-inline: auto; }
.mono { font-family: var(--f-mono); }

/* Header */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: color-mix(in srgb, var(--paper) 90%, transparent);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line-strong);
}
.site-header .wrap { display: flex; align-items: center; justify-content: space-between; height: 4rem; gap: 1rem; }
.brand { display: flex; align-items: center; gap: .7rem; text-decoration: none; }
.brand img { width: 2.9rem; height: auto; }
.brand-name { font-weight: 800; font-stretch: 112%; letter-spacing: .14em; font-size: .95rem; text-transform: uppercase; }
.brand-name b { color: var(--accent); }
.nav { display: flex; gap: .25rem; align-items: center; }
.nav a {
  font-family: var(--f-mono); font-size: .8rem; letter-spacing: .04em; text-transform: uppercase;
  text-decoration: none; padding: .5rem .7rem; border-bottom: 2px solid transparent; color: var(--muted);
}
.nav a:hover, .nav a.is-active { color: var(--ink); border-bottom-color: var(--green); }
.nav a.cta { background: var(--btn-bg); color: var(--btn-fg); border-bottom-color: transparent; margin-left: .5rem; }
.nav a.cta:hover { opacity: .88; }
.menu-btn {
  display: none; background: none; border: 1px solid var(--line-strong); color: var(--ink);
  font-family: var(--f-mono); font-size: .8rem; text-transform: uppercase; padding: .55rem .8rem; cursor: pointer;
}
@media (max-width: 900px) {
  .menu-btn { display: inline-flex; gap: .5rem; align-items: center; }
  .nav {
    position: absolute; inset: 4rem 0 auto 0; flex-direction: column; align-items: stretch;
    background: var(--paper); border-bottom: 1px solid var(--line-strong); padding: .5rem var(--gut) 1rem;
    display: none;
  }
  .nav.open { display: flex; }
  .nav a { padding: .9rem .2rem; border-bottom: 1px solid var(--line); }
  .nav a.cta { margin: .8rem 0 0; text-align: center; }
}

/* Hero */
.hero { padding: clamp(2.5rem, 7vw, 6rem) 0 clamp(2.5rem, 6vw, 5rem); border-bottom: 1px solid var(--line-strong); }
.hero .wrap { display: grid; grid-template-columns: 1.05fr 1fr; gap: clamp(1.5rem, 4vw, 4rem); align-items: center; }
.tag { font-family: var(--f-mono); font-size: .78rem; letter-spacing: .12em; text-transform: uppercase; color: var(--accent); display: flex; align-items: center; gap: .6rem; margin: 0 0 1.2rem; }
.tag::before { content: ""; width: 2rem; height: 2px; background: var(--green); }
h1, h2, h3 { font-weight: 800; line-height: 1.02; margin: 0; letter-spacing: -.02em; }
h1 { font-size: clamp(2.5rem, 6.4vw, 5rem); font-stretch: 80%; text-transform: uppercase; }
h1 em { font-style: normal; color: var(--accent); }
.lead { font-size: clamp(1.05rem, 1.6vw, 1.3rem); color: var(--muted); max-width: 38em; margin: 1.5rem 0 2rem; }
.btns { display: flex; flex-wrap: wrap; gap: .8rem; }
.btn {
  display: inline-flex; align-items: center; gap: .6rem; font-family: var(--f-mono); font-size: .85rem; letter-spacing: .05em;
  text-transform: uppercase; text-decoration: none; padding: .95rem 1.4rem; border: 2px solid var(--btn-bg);
  background: var(--btn-bg); color: var(--btn-fg); cursor: pointer; transition: transform .2s, background .2s;
}
.btn:hover { transform: translate(-2px, -2px); box-shadow: 4px 4px 0 var(--green); }
.btn.ghost { background: transparent; color: var(--ink); border-color: var(--line-strong); }
.hero-fig { border: 1px solid var(--line-strong); background: var(--surface); padding: 1rem; position: relative; }
.hero-fig figcaption, .fig-cap { font-family: var(--f-mono); font-size: .7rem; letter-spacing: .08em; text-transform: uppercase; color: var(--muted); display: flex; justify-content: space-between; gap: 1rem; padding-top: .7rem; border-top: 1px dashed var(--line-strong); margin-top: .7rem; }
@media (max-width: 900px) { .hero .wrap { grid-template-columns: 1fr; } }

/* Diagramas SVG */
.dg { width: 100%; height: auto; font-family: var(--f-mono); }
.dg .ln { stroke: var(--ink); fill: none; stroke-width: 1.5; }
.dg .nd { fill: var(--surface); stroke: var(--ink); stroke-width: 1.5; }
.dg .nd.hl { fill: var(--blue); stroke: var(--blue); }
.dg .tx { fill: var(--ink); font-size: 12px; letter-spacing: .06em; }
.dg .tx.hl { fill: var(--btn-fg); }
.dg .sm { fill: var(--muted); font-size: 9.5px; letter-spacing: .08em; }
.dg .flow { stroke: var(--green); stroke-width: 2.5; fill: none; stroke-dasharray: 6 8; animation: flow 1.2s linear infinite; }
.dg .flow.rev { animation-direction: reverse; }
.dg .dot { fill: var(--green); }
@keyframes flow { to { stroke-dashoffset: -28; } }

/* Secciones */
section { padding: clamp(3.5rem, 8vw, 7rem) 0; border-bottom: 1px solid var(--line-strong); }
.sec-head { display: grid; grid-template-columns: auto 1fr; gap: 1.2rem 2rem; align-items: end; margin-bottom: clamp(2rem, 5vw, 3.5rem); }
.sec-num { font-family: var(--f-mono); font-size: .8rem; color: var(--accent); letter-spacing: .1em; border: 1px solid var(--line-strong); padding: .4rem .7rem; align-self: start; }
.sec-head h2 { font-size: clamp(2rem, 4.6vw, 3.6rem); font-stretch: 85%; text-transform: uppercase; }
.sec-head p { grid-column: 2; margin: 0; color: var(--muted); max-width: 46em; }
@media (max-width: 600px) { .sec-head { grid-template-columns: 1fr; } .sec-head p { grid-column: 1; } }

/* Líneas */
.lines { display: grid; grid-template-columns: repeat(2, 1fr); border-top: 1px solid var(--line-strong); border-left: 1px solid var(--line-strong); }
.line-item { padding: clamp(1.4rem, 3vw, 2.2rem); border-right: 1px solid var(--line-strong); border-bottom: 1px solid var(--line-strong); position: relative; transition: background .25s; }
.line-item:hover { background: var(--surface); }
.line-item .code { font-family: var(--f-mono); font-size: .75rem; color: var(--accent); letter-spacing: .1em; }
.line-item h3 { font-size: 1.7rem; font-stretch: 90%; margin: .5rem 0 .9rem; text-transform: uppercase; }
.line-item p { margin: 0 0 1rem; color: var(--muted); }
.line-item ul { margin: 0; padding: 0; list-style: none; font-size: .98rem; }
.line-item li { padding: .35rem 0 .35rem 1.3rem; position: relative; border-top: 1px dashed var(--line); }
.line-item li::before { content: ""; position: absolute; left: 0; top: 1rem; width: .6rem; height: 2px; background: var(--green); }
.chips { display: flex; flex-wrap: wrap; gap: .4rem; margin: 0 0 1rem; padding: 0; list-style: none; }
.chips li { font-family: var(--f-mono); font-size: .74rem; border: 1px solid var(--line-strong); padding: .2rem .55rem; }
.chips li::before { display: none; }
.deploy { margin-top: 1.5rem; padding: 1rem 1.3rem; border: 1px solid var(--line-strong); background: var(--surface); font-family: var(--f-mono); font-size: .85rem; }
.deploy b { color: var(--accent); }
@media (max-width: 800px) { .lines { grid-template-columns: 1fr; } }

/* Productos */
.product { border: 1px solid var(--line-strong); background: var(--surface); margin-bottom: 2rem; }
.product-head { display: flex; flex-wrap: wrap; justify-content: space-between; gap: .6rem 1rem; padding: .7rem 1.2rem; border-bottom: 1px solid var(--line-strong); font-family: var(--f-mono); font-size: .75rem; letter-spacing: .1em; text-transform: uppercase; background: var(--blue); color: var(--btn-fg); }
@media (prefers-color-scheme: dark) { .product-head { background: transparent; color: var(--accent); } }
.product-body { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(1.5rem, 4vw, 3rem); padding: clamp(1.2rem, 3vw, 2.4rem); }
.product h3 { font-size: clamp(1.8rem, 3.6vw, 2.8rem); font-stretch: 85%; margin-bottom: .4rem; }
.product .sub { font-family: var(--f-mono); font-size: .85rem; color: var(--accent); margin: 0 0 1.2rem; }
.product p { color: var(--muted); margin: 0 0 1rem; }
.spec { margin: 1rem 0 0; padding: 0; list-style: none; }
.spec li { display: grid; grid-template-columns: 7.5rem 1fr; gap: 1rem; padding: .55rem 0; border-top: 1px dashed var(--line-strong); font-size: .96rem; }
.spec li span:first-child { font-family: var(--f-mono); font-size: .72rem; letter-spacing: .08em; text-transform: uppercase; color: var(--accent); padding-top: .2rem; }
.product-foot { display: grid; grid-template-columns: repeat(2, 1fr); border-top: 1px solid var(--line-strong); }
.product-foot > div { padding: 1rem 1.4rem; font-size: .95rem; }
.product-foot > div + div { border-left: 1px solid var(--line-strong); }
.product-foot h4 { font-family: var(--f-mono); font-size: .72rem; letter-spacing: .1em; text-transform: uppercase; color: var(--accent); margin: 0 0 .4rem; font-weight: 500; }
.product-foot p { margin: 0; }
.quote { font-family: var(--f-display); font-stretch: 80%; font-weight: 800; font-size: clamp(1.4rem, 3vw, 2.1rem); text-transform: uppercase; line-height: 1.05; border-left: 6px solid var(--green); padding-left: 1rem; margin: 1.5rem 0 !important; color: var(--ink) !important; }
.roadmap { display: flex; flex-wrap: wrap; gap: .5rem; margin: .6rem 0 0; padding: 0; list-style: none; }
.roadmap li { font-family: var(--f-mono); font-size: .75rem; border: 1px dashed var(--line-strong); padding: .3rem .6rem; }
@media (max-width: 900px) { .product-body, .product-foot { grid-template-columns: 1fr; } .product-foot > div + div { border-left: 0; border-top: 1px solid var(--line-strong); } .spec li { grid-template-columns: 1fr; gap: 0; } }

/* Casos */
.cases { display: grid; grid-template-columns: repeat(auto-fill, minmax(min(100%, 340px), 1fr)); gap: 1.2rem; }
.case { border: 1px solid var(--line-strong); background: var(--surface); display: flex; flex-direction: column; transition: transform .25s, box-shadow .25s; }
.case:hover { transform: translate(-3px, -3px); box-shadow: 5px 5px 0 var(--green); }
.case header { padding: 1rem 1.2rem; border-bottom: 1px solid var(--line-strong); }
.case .id { font-family: var(--f-mono); font-size: .7rem; letter-spacing: .1em; color: var(--accent); }
.case h3 { font-size: 1.3rem; font-stretch: 90%; margin-top: .3rem; text-transform: uppercase; line-height: 1.1; }
.case dl { margin: 0; padding: 1rem 1.2rem 0; flex: 1; font-size: .95rem; }
.case dt { font-family: var(--f-mono); font-size: .68rem; letter-spacing: .1em; text-transform: uppercase; color: var(--accent); margin-top: .8rem; }
.case dt:first-child { margin-top: 0; }
.case dd { margin: .15rem 0 0; color: var(--muted); }
.case dl:last-child { padding-bottom: 1.2rem; }
.case .chips { padding: 1rem 1.2rem 1.2rem; margin: 0; }

/* Clientes */
.clients { display: flex; flex-wrap: wrap; border-top: 1px solid var(--line-strong); border-left: 1px solid var(--line-strong); margin: 0; padding: 0; list-style: none; }
.clients li { flex: 1 1 13rem; display: flex; align-items: center; justify-content: center; min-height: 7rem; padding: 1rem 1.2rem; border-right: 1px solid var(--line-strong); border-bottom: 1px solid var(--line-strong); transition: background .2s; }
.clients li:hover { background: var(--surface); }
@media (max-width: 600px) {
  .clients li { flex: 1 1 40%; min-height: 5.5rem; padding: .7rem; }
}
/* Placa clara: los logos originales tienen fondo blanco; la placa los asienta igual en modo claro y oscuro */
.clients .plate { display: flex; align-items: center; justify-content: center; width: min(100%, 11rem); height: 4.5rem; padding: .5rem .9rem; background: #fff; border: 1px solid var(--line-strong); }
.clients .plate img { height: 50px; width: auto; max-width: 100%; object-fit: contain; }
.clients .txt span { font-weight: 800; font-stretch: 85%; text-transform: uppercase; font-size: 1.2rem; letter-spacing: .01em; line-height: 1.1; text-align: center; }

/* Tecnologías */
.tech { display: grid; border-top: 1px solid var(--line-strong); }
.tech-row { display: grid; grid-template-columns: 14rem 1fr; gap: 1rem 2rem; padding: 1.3rem 0; border-bottom: 1px solid var(--line-strong); align-items: baseline; }
.tech-row h3 { font-family: var(--f-mono); font-size: .8rem; font-weight: 500; letter-spacing: .1em; text-transform: uppercase; color: var(--accent); }
.tech-row ul { display: flex; flex-wrap: wrap; gap: .5rem; margin: 0; padding: 0; list-style: none; }
.tech-row li { font-family: var(--f-mono); font-size: .9rem; border: 1px solid var(--line-strong); padding: .35rem .8rem; background: var(--surface); }
@media (max-width: 700px) { .tech-row { grid-template-columns: 1fr; } }

/* Contacto */
.contact { display: grid; grid-template-columns: 1fr 1.1fr; gap: clamp(1.5rem, 5vw, 4rem); }
.contact h3 { font-size: clamp(1.6rem, 3vw, 2.2rem); font-stretch: 85%; text-transform: uppercase; margin-bottom: 1rem; }
.contact p { color: var(--muted); }
.contact address { font-style: normal; font-family: var(--f-mono); margin: 1.2rem 0; padding: 1rem 0; border-top: 1px dashed var(--line-strong); border-bottom: 1px dashed var(--line-strong); }
form { border: 1px solid var(--line-strong); background: var(--surface); padding: clamp(1.2rem, 3vw, 2rem); display: grid; gap: 1.1rem; }
label { font-family: var(--f-mono); font-size: .75rem; letter-spacing: .1em; text-transform: uppercase; color: var(--accent); display: grid; gap: .4rem; }
input, textarea { font: inherit; font-size: 1rem; letter-spacing: 0; text-transform: none; color: var(--ink); background: var(--paper); border: 1px solid var(--line-strong); padding: .8rem; width: 100%; border-radius: 0; }
textarea { min-height: 8rem; resize: vertical; }
.hint { font-size: .85rem; margin: 0; color: var(--muted); }
@media (max-width: 800px) { .contact { grid-template-columns: 1fr; } }

/* Footer */
footer { padding: 2.5rem 0; font-family: var(--f-mono); font-size: .8rem; }
footer .wrap { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 1.2rem; align-items: center; }
footer nav { display: flex; flex-wrap: wrap; gap: .4rem 1.2rem; }
footer a { color: var(--muted); }
footer a:hover { color: var(--ink); }

/* Animación de entrada */
.reveal { opacity: 0; transform: translateY(18px); transition: opacity .7s ease, transform .7s ease; }
.reveal.in { opacity: 1; transform: none; }
.no-js .reveal { opacity: 1; transform: none; }
.hero .reveal:nth-child(2) { transition-delay: .1s; } .hero .reveal:nth-child(3) { transition-delay: .2s; } .hero .reveal:nth-child(4) { transition-delay: .3s; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition: none !important; }
  .reveal { opacity: 1; transform: none; }
  .dg .flow { stroke-dasharray: none; }
}