/* Layout: cuadro de control — bandas horizontales como carriles DIN, etiquetas tipo rótulo de cuadro, una sola acción principal por pantalla */
:root {
  --bg: #f2f4f6;          /* gris cuadro aclarado, sesgo azul */
  --surface: #ffffff;
  --ink: #111d2b;
  --muted: #536171;
  --line: #d4dae1;
  --accent: #0d3156;      /* azul marino del logo */
  --accent-ink: #ffffff;
  --signal: #c9670c;      /* naranja del logo, solo detalles */
  --ok: #2f8a3e;
  --ph-bg: #ffe9a8;
  --ph-ink: #5a4200;
  --display: "Barlow Semi Condensed", "Arial Narrow", Arial, sans-serif;
  --body: "Public Sans", "Segoe UI", Roboto, Arial, sans-serif;
  --mono: "JetBrains Mono", Consolas, "Courier New", monospace;
  --wrap: 1160px;
  --r: 6px;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #0d141c; --surface: #142030; --ink: #e7edf4; --muted: #9dabbb; --line: #26364a;
    --accent: #8dbbe8; --accent-ink: #0b2340; --signal: #f0913a; --ok: #5cc26c;
    --ph-bg: #4a3a0a; --ph-ink: #ffe29a; color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --bg: #0d141c; --surface: #142030; --ink: #e7edf4; --muted: #9dabbb; --line: #26364a;
  --accent: #8dbbe8; --accent-ink: #0b2340; --signal: #f0913a; --ok: #5cc26c;
  --ph-bg: #4a3a0a; --ph-ink: #ffe29a; color-scheme: dark;
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--bg); color: var(--ink); font: 400 1.0625rem/1.65 var(--body); }
img { max-width: 100%; height: auto; display: block; }
a { color: var(--accent); text-underline-offset: 3px; }
a:focus-visible, button:focus-visible, input:focus-visible, textarea:focus-visible, summary:focus-visible {
  outline: 3px solid var(--signal); outline-offset: 2px;
}
h1, h2, h3 { font-family: var(--display); line-height: 1.1; text-wrap: balance; margin: 0; letter-spacing: -0.005em; }
h1 { font-size: clamp(2.3rem, 5.2vw, 3.9rem); font-weight: 700; }
h2 { font-size: clamp(1.8rem, 3.4vw, 2.5rem); font-weight: 650; }
h3 { font-size: 1.35rem; font-weight: 650; }
p { margin: 0; }
.wrap { max-width: var(--wrap); margin-inline: auto; padding-inline: 20px; }
.ph { background: var(--ph-bg); color: var(--ph-ink); padding: 0 .3em; border-radius: 3px; font-family: var(--mono); font-size: .88em; }

/* Rótulo tipo etiqueta de cuadro */
.tag { justify-self: start; display: inline-block; font: 600 .74rem/1 var(--mono); letter-spacing: .12em; text-transform: uppercase;
  color: var(--ink); background: var(--surface); border: 1px solid var(--line); padding: .45em .7em; border-radius: 3px; }

/* Cabecera */
.site-header { position: sticky; top: env(safe-area-inset-top, 0px); z-index: 10; background: color-mix(in srgb, var(--bg) 92%, transparent);
  backdrop-filter: blur(8px); border-bottom: 1px solid var(--line); }
.site-header .wrap { display: flex; align-items: center; justify-content: space-between; gap: 16px; min-height: 68px; }
.brand { display: flex; align-items: center; gap: 10px; text-decoration: none; color: var(--ink); }
.brand svg { width: 34px; height: 34px; flex: none; }
.brand b { font: 700 1.55rem/1 var(--display); letter-spacing: .01em; }
.brand small { display: block; font: 500 .68rem/1.2 var(--mono); color: var(--muted); letter-spacing: .08em; text-transform: uppercase; }
.nav { display: flex; align-items: center; gap: 4px; }
.nav a { color: var(--ink); text-decoration: none; font-weight: 500; font-size: .96rem; padding: .5em .75em; border-radius: var(--r); }
.nav a:hover { background: var(--surface); }
.nav a[aria-current="page"] { color: var(--accent); box-shadow: inset 0 -2px 0 var(--accent); border-radius: 0; }
.btn { display: inline-flex; align-items: center; gap: .5em; font: 600 1rem/1 var(--body); text-decoration: none; cursor: pointer;
  padding: .85em 1.25em; border-radius: var(--r); border: 1px solid var(--accent); background: var(--accent); color: var(--accent-ink); }
.btn:hover { filter: brightness(1.08); }
.btn.ghost { background: transparent; color: var(--accent); }
.nav .btn { margin-left: 8px; padding: .65em 1em; color: var(--accent-ink); }
.menu { display: none; }
@media (max-width: 900px) {
  .nav { display: none; }
  .menu { display: block; position: relative; }
  .menu summary { list-style: none; cursor: pointer; font-weight: 600; padding: .55em .9em; border: 1px solid var(--line); border-radius: var(--r); background: var(--surface); }
  .menu summary::-webkit-details-marker { display: none; }
  .menu[open] .nav { display: flex; flex-direction: column; align-items: stretch; position: absolute; right: 0; top: calc(100% + 8px);
    background: var(--surface); border: 1px solid var(--line); border-radius: var(--r); padding: 8px; min-width: 220px; box-shadow: 0 10px 30px rgb(0 0 0 / .12); }
  .menu[open] .nav .btn { margin: 6px 0 0; justify-content: center; }
}

/* Secciones */
section { padding-block: clamp(56px, 8vw, 96px); }
.band { background: var(--surface); border-block: 1px solid var(--line); }
.head { display: grid; gap: 14px; max-width: 760px; margin-bottom: 40px; }
.lead { font-size: 1.18rem; color: var(--muted); max-width: 64ch; }

/* Hero */
.hero { padding-block: clamp(40px, 6vw, 80px) clamp(48px, 7vw, 88px); }
.hero .wrap { display: grid; grid-template-columns: 1.15fr .85fr; gap: clamp(28px, 5vw, 64px); align-items: center; }
.hero-copy { display: grid; gap: 22px; min-width: 0; }
.hero-copy h1 span { color: var(--accent); }
.cta { display: flex; flex-wrap: wrap; gap: 12px; }
.trust { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 6px; }
.trust li { list-style: none; }
.trust { padding: 0; }
@media (max-width: 900px) { .hero .wrap { grid-template-columns: 1fr; } }

/* Pantalla de supervisión de ejemplo */
.scada { background: #0f1a19; color: #d9e7e4; border-radius: 10px; padding: 18px; font-family: var(--mono); font-size: .85rem;
  border: 1px solid #243432; box-shadow: 0 24px 48px -20px rgb(0 0 0 / .45); min-width: 0; }
.scada-top { display: flex; justify-content: space-between; align-items: center; gap: 8px; color: #8fb3ad; font-size: .72rem; letter-spacing: .08em; text-transform: uppercase; margin-bottom: 12px; }
.scada-top .live { display: inline-flex; align-items: center; gap: 6px; color: #7fdc8c; }
.scada-top .live::before { content: ""; width: 7px; height: 7px; border-radius: 50%; background: #7fdc8c; animation: pulse 2s infinite; }
@keyframes pulse { 50% { opacity: .35; } }
@media (prefers-reduced-motion: reduce) { .scada-top .live::before { animation: none; } }
.scada svg { width: 100%; height: auto; display: block; margin-bottom: 12px; }
.pts { display: grid; gap: 1px; background: #243432; border: 1px solid #243432; border-radius: 6px; overflow: hidden; }
.pt { display: grid; grid-template-columns: 1fr auto auto; gap: 12px; padding: 8px 10px; background: #13201f; align-items: baseline; font-variant-numeric: tabular-nums; }
.pt span:first-child { color: #9fbab5; }
.pt b { color: #fff; font-weight: 600; }
.pt i { font-style: normal; color: #6f8f89; font-size: .75rem; }
.pt .on { color: #7fdc8c; }
.scada-note { margin-top: 10px; font-size: .7rem; color: #6f8f89; }

/* Rejillas */
.grid { display: grid; gap: 20px; grid-template-columns: repeat(auto-fit, minmax(min(100%, 300px), 1fr)); }
.card { background: var(--surface); border: 1px solid var(--line); border-radius: var(--r); padding: 26px; display: grid; gap: 12px; align-content: start; min-width: 0; }
.band .card { background: var(--bg); }
.card p { color: var(--muted); }
.card .code { font: 600 .72rem/1 var(--mono); color: var(--signal); letter-spacing: .1em; }
.list { display: grid; gap: 8px; padding: 0; margin: 0; }
.list li { list-style: none; padding-left: 1.3em; position: relative; }
.list li::before { content: ""; position: absolute; left: 0; top: .68em; width: .55em; height: 2px; background: var(--signal); }

/* Bloque con imagen */
.split { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(28px, 5vw, 64px); align-items: center; }
.split > * { min-width: 0; }
.split figure { margin: 0; }
.split img, .photo img { border-radius: var(--r); border: 1px solid var(--line); width: 100%; object-fit: cover; }
figcaption { font: .8rem/1.4 var(--mono); color: var(--muted); margin-top: 10px; }
@media (max-width: 860px) { .split { grid-template-columns: 1fr; } }

/* Proceso */
.steps { counter-reset: s; display: grid; gap: 0; grid-template-columns: repeat(auto-fit, minmax(min(100%, 200px), 1fr)); border: 1px solid var(--line); border-radius: var(--r); overflow: hidden; background: var(--line); }
.steps li { list-style: none; counter-increment: s; background: var(--surface); padding: 24px; display: grid; gap: 8px; margin: 0 1px 1px 0; }
.steps li::before { content: counter(s, decimal-leading-zero); font: 600 .8rem/1 var(--mono); color: var(--signal); }
.steps { padding: 0; margin: 0; }
.steps p { color: var(--muted); font-size: .96rem; }

/* Tabla de protocolos */
.table-wrap { overflow-x: auto; border: 1px solid var(--line); border-radius: var(--r); background: var(--surface); }
table { border-collapse: collapse; width: 100%; min-width: 560px; font-size: .96rem; }
th, td { text-align: left; padding: 12px 16px; border-bottom: 1px solid var(--line); vertical-align: top; }
th { font: 600 .74rem/1.2 var(--mono); letter-spacing: .08em; text-transform: uppercase; color: var(--muted); }
tr:last-child td { border-bottom: 0; }

/* Normativa */
.notice { border-left: 3px solid var(--signal); background: var(--surface); padding: 22px 24px; border-radius: 0 var(--r) var(--r) 0; display: grid; gap: 10px; }

/* CTA final */
.final { background: var(--accent); color: var(--accent-ink); }
.final .wrap { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: center; gap: 24px; }
.final p { opacity: .9; max-width: 56ch; margin-top: 8px; }
.final .btn { background: var(--accent-ink); color: var(--accent); border-color: var(--accent-ink); }

/* Formulario */
form { display: grid; gap: 16px; }
label { font-weight: 600; font-size: .92rem; display: grid; gap: 6px; }
input[type="text"], input[type="email"], input[type="tel"], select, textarea {
  font: inherit; color: var(--ink); background: var(--bg); border: 1px solid var(--line); border-radius: var(--r); padding: .75em .9em; width: 100%; }
textarea { min-height: 140px; resize: vertical; }
.check { display: flex; gap: 10px; align-items: flex-start; font-weight: 400; font-size: .9rem; color: var(--muted); }
.check input { margin-top: .3em; width: 18px; height: 18px; flex: none; accent-color: var(--accent); }
.form-msg { font-size: .95rem; padding: 12px 14px; border-radius: var(--r); background: var(--bg); border: 1px solid var(--line); }
.form-msg[data-kind="ok"] { border-color: var(--ok); }
.form-msg[data-kind="err"] { border-color: var(--signal); }
.two { display: grid; gap: 16px; grid-template-columns: 1fr 1fr; }
@media (max-width: 640px) { .two { grid-template-columns: 1fr; } }
.contact-data { display: grid; gap: 18px; }
.contact-data div { display: grid; gap: 2px; }
.contact-data dt { font: 600 .74rem/1 var(--mono); letter-spacing: .1em; text-transform: uppercase; color: var(--muted); }
.contact-data dd { margin: 0; font-size: 1.1rem; }
dl { margin: 0; }

/* Textos legales */
.legal { max-width: 760px; display: grid; gap: 16px; }
.legal h2 { font-size: 1.5rem; margin-top: 16px; }
.legal ul { margin: 0; padding-left: 1.2em; display: grid; gap: 6px; }

/* Pie */
.site-footer { border-top: 1px solid var(--line); padding-block: 48px 32px; font-size: .95rem; color: var(--muted); }
.site-footer .cols { display: grid; gap: 28px; grid-template-columns: 1.4fr 1fr 1fr 1fr; }
.site-footer h3 { font: 600 .74rem/1 var(--mono); letter-spacing: .1em; text-transform: uppercase; color: var(--ink); margin-bottom: 12px; }
.site-footer ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 6px; }
.site-footer a { color: var(--muted); text-decoration: none; }
.site-footer a:hover { color: var(--accent); }
.site-footer .bottom { margin-top: 36px; padding-top: 20px; border-top: 1px solid var(--line); display: flex; flex-wrap: wrap; gap: 12px; justify-content: space-between; font-size: .85rem; }
@media (max-width: 860px) { .site-footer .cols { grid-template-columns: 1fr 1fr; } }
@media (max-width: 480px) { .site-footer .cols { grid-template-columns: 1fr; } }

.preview-bar { background: var(--ph-bg); color: var(--ph-ink); font: 500 .85rem/1.4 var(--body); text-align: center; padding: 8px 16px; }

/* Logo: fondo claro fijo para que el azul marino se lea también en modo oscuro */
.brand .logo { height: 52px; width: auto; background: #fff; border-radius: 6px; padding: 3px 6px; }
.site-footer .brand .logo { height: 72px; }
/* Captura de supervisión real */
.screen { margin: 0; background: #1b2633; border-radius: 10px; padding: 10px 10px 0; box-shadow: 0 24px 48px -20px rgb(0 0 0 / .45); min-width: 0; }
.screen .bar { display: flex; gap: 6px; padding: 0 2px 8px; }
.screen .bar i { width: 9px; height: 9px; border-radius: 50%; background: #3a4b5e; }
.screen img { border-radius: 4px 4px 0 0; width: 100%; }
.screen + figcaption, .hero figcaption { margin-top: 10px; }
/* Franja partner */
.partner { display: flex; flex-wrap: wrap; align-items: center; gap: 20px 32px; }
.partner img { height: 34px; width: auto; background: #fff; padding: 8px 12px; border-radius: 6px; box-sizing: content-box; }
.partner p { color: var(--muted); max-width: 60ch; }
/* Proyectos */
.case { display: grid; gap: 24px; grid-template-columns: 1.1fr .9fr; align-items: start; }
.case > * { min-width: 0; }
.case + .case { margin-top: 64px; padding-top: 64px; border-top: 1px solid var(--line); }
.case .main img { border-radius: var(--r); border: 1px solid var(--line); width: 100%; }
.thumbs { display: grid; gap: 12px; grid-template-columns: repeat(3, 1fr); margin-top: 12px; }
.thumbs img { aspect-ratio: 4/3; object-fit: cover; background: #fff; border-radius: var(--r); border: 1px solid var(--line); width: 100%; }
.facts { display: grid; gap: 10px; margin: 6px 0 4px; }
.facts div { display: grid; grid-template-columns: 110px 1fr; gap: 12px; font-size: .95rem; }
.facts dt { font: 600 .72rem/1.6 var(--mono); letter-spacing: .08em; text-transform: uppercase; color: var(--muted); }
.facts dd { margin: 0; }
@media (max-width: 860px) { .case { grid-template-columns: 1fr; } }
.photo-card img { aspect-ratio: 16/9; object-fit: cover; background: #fff; }