/* ============================================================
   SMARTIOTARG — sistema de estilos compartido (soluciones + capacitaciones)
   Marca: SMARTIOTARG SAS. Monocromo + un acento. NO usar branding SMARTFLEX.
   ============================================================ */

:root {
    --ink:        #0B0B0B;   /* casi negro, color de marca */
    --ink-soft:   #3A3A3A;
    --muted:      #6B7280;   /* texto secundario */
    --line:       #E5E7EB;   /* bordes / divisores */
    --bg:         #FFFFFF;
    --bg-alt:     #F7F8FA;   /* secciones alternas */
    --bg-dark:    #0B0B0B;   /* hero / footer */
    --accent:     #2563EB;   /* azul técnico, uso reservado */
    --accent-ink: #1E40AF;
    --accent-bg:  #EEF3FF;
    --ok:         #059669;
    --radius:     14px;
    --shadow:     0 1px 2px rgba(16,24,40,.06), 0 8px 24px -12px rgba(16,24,40,.18);
    --shadow-lg:  0 24px 48px -20px rgba(16,24,40,.30);
    --maxw:       1180px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    color: var(--ink);
    background: var(--bg);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}
a { color: inherit; }
img, svg { display: block; max-width: 100%; }

.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }

/* ---------- Wordmark (SMART·IOT·ARG con contraste de peso) ---------- */
.wordmark { font-weight: 500; letter-spacing: 1px; }
.wordmark b { font-weight: 800; }

/* ---------- Navbar ---------- */
.nav {
    position: fixed; inset: 0 0 auto 0; z-index: 1000;
    background: rgba(255,255,255,.88);
    backdrop-filter: saturate(180%) blur(12px);
    border-bottom: 1px solid var(--line);
}
.nav-inner { display: flex; align-items: center; justify-content: space-between; height: 68px; }
.brand { display: flex; align-items: center; gap: 11px; text-decoration: none; color: var(--ink); }
.brand svg, .brand img { height: 34px; width: 34px; }
.brand .wordmark { font-size: 1.18rem; }
.nav-links { display: flex; align-items: center; gap: 28px; list-style: none; }
.nav-links a { text-decoration: none; color: var(--ink-soft); font-weight: 500; font-size: .92rem; }
.nav-links a:hover { color: var(--accent); }
.nav-cta {
    background: var(--ink); color: #fff !important; padding: 9px 18px;
    border-radius: 9px; font-weight: 600; font-size: .9rem;
}
.nav-cta:hover { background: var(--accent); }
.nav-toggle { display: none; background: none; border: 0; font-size: 1.4rem; color: var(--ink); cursor: pointer; }

/* ---------- Hero ---------- */
.hero {
    background: radial-gradient(1200px 600px at 70% -10%, #1b1b1b 0%, #0B0B0B 60%);
    color: #fff; padding: 140px 0 96px; position: relative; overflow: hidden;
}
.hero::after {
    content: ""; position: absolute; inset: 0;
    background-image: radial-gradient(rgba(255,255,255,.07) 1px, transparent 1px);
    background-size: 26px 26px; opacity: .5; pointer-events: none;
}
.hero .wrap { position: relative; z-index: 1; }
.eyebrow {
    display: inline-block; font-size: .78rem; font-weight: 600; letter-spacing: 1.6px;
    text-transform: uppercase; color: #cbd5e1;
    border: 1px solid rgba(255,255,255,.22); border-radius: 50px; padding: 6px 14px; margin-bottom: 22px;
}
.hero h1 { font-size: clamp(2.1rem, 4.6vw, 3.4rem); font-weight: 800; line-height: 1.08; letter-spacing: -1px; max-width: 16ch; }
.hero p.lead { color: #d2d6dd; font-size: 1.18rem; max-width: 60ch; margin-top: 20px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 34px; }

.btn {
    display: inline-flex; align-items: center; gap: 9px; padding: 13px 24px;
    border-radius: 10px; font-weight: 600; font-size: .98rem; text-decoration: none;
    border: 1px solid transparent; cursor: pointer; transition: transform .15s ease, background .2s ease;
}
.btn:hover { transform: translateY(-2px); }
.btn-primary { background: #fff; color: var(--ink); }
.btn-primary:hover { background: var(--accent-bg); }
.btn-accent { background: var(--accent); color: #fff; }
.btn-ghost { background: transparent; color: #fff; border-color: rgba(255,255,255,.35); }
.btn-ghost:hover { background: rgba(255,255,255,.1); }
.btn-dark { background: var(--ink); color: #fff; }

.hero-stats { display: flex; flex-wrap: wrap; gap: 40px; margin-top: 56px; }
.hero-stats .stat .n { font-size: 2.2rem; font-weight: 800; line-height: 1; }
.hero-stats .stat .l { color: #9aa3af; font-size: .9rem; margin-top: 6px; }

/* ---------- Section scaffolding ---------- */
section { padding: 96px 0; }
.section-head { max-width: 720px; margin: 0 auto 56px; text-align: center; }
.tag {
    display: inline-block; font-size: .76rem; font-weight: 700; letter-spacing: 1.4px; text-transform: uppercase;
    color: var(--accent); background: var(--accent-bg); border-radius: 50px; padding: 6px 14px; margin-bottom: 16px;
}
.section-head h2 { font-size: clamp(1.8rem, 3.4vw, 2.5rem); font-weight: 800; letter-spacing: -.5px; }
.section-head p { color: var(--muted); font-size: 1.1rem; margin-top: 12px; }
.alt { background: var(--bg-alt); }

/* ---------- Application cards ---------- */
.apps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 26px; }
.app {
    background: #fff; border: 1px solid var(--line); border-radius: var(--radius);
    padding: 32px; box-shadow: var(--shadow); display: flex; flex-direction: column;
    transition: transform .2s ease, box-shadow .2s ease;
}
.app:hover { transform: translateY(-6px); box-shadow: var(--shadow-lg); }
.app .ico {
    width: 54px; height: 54px; border-radius: 13px; display: flex; align-items: center; justify-content: center;
    background: var(--ink); color: #fff; font-size: 1.4rem; margin-bottom: 20px;
}
.app h3 { font-size: 1.3rem; font-weight: 700; }
.app .pitch { color: var(--ink-soft); font-weight: 500; margin: 10px 0 18px; }
.app ul { list-style: none; display: grid; gap: 10px; }
.app ul li { display: flex; gap: 10px; color: var(--muted); font-size: .95rem; }
.app ul li svg { flex: 0 0 18px; margin-top: 3px; color: var(--accent); }
.app .spec {
    margin-top: 20px; padding-top: 16px; border-top: 1px dashed var(--line);
    font-size: .82rem; color: var(--muted);
}
.app .spec b { color: var(--ink); font-weight: 600; }

/* ---------- How it works (stepper) ---------- */
.flow { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; counter-reset: step; }
.flow .step { position: relative; padding: 28px 22px; background: #fff; border: 1px solid var(--line); border-radius: var(--radius); }
.flow .step::before {
    counter-increment: step; content: counter(step);
    position: absolute; top: -16px; left: 22px; width: 34px; height: 34px; border-radius: 9px;
    background: var(--ink); color: #fff; display: flex; align-items: center; justify-content: center; font-weight: 700;
}
.flow .step h4 { margin: 14px 0 8px; font-size: 1.05rem; }
.flow .step p { color: var(--muted); font-size: .92rem; }

/* ---------- Capabilities grid ---------- */
.caps { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.cap { display: flex; gap: 16px; padding: 22px; border: 1px solid var(--line); border-radius: var(--radius); background: #fff; }
.cap .ci { flex: 0 0 44px; height: 44px; border-radius: 11px; background: var(--accent-bg); color: var(--accent); display: flex; align-items: center; justify-content: center; font-size: 1.2rem; }
.cap h4 { font-size: 1.02rem; font-weight: 700; }
.cap p { color: var(--muted); font-size: .9rem; margin-top: 4px; }

/* ---------- Spec table ---------- */
.spec-table { width: 100%; border-collapse: collapse; background: #fff; border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; }
.spec-table th, .spec-table td { text-align: left; padding: 15px 20px; border-bottom: 1px solid var(--line); font-size: .95rem; }
.spec-table th { width: 34%; background: var(--bg-alt); font-weight: 600; color: var(--ink); }
.spec-table td { color: var(--ink-soft); }
.spec-table tr:last-child th, .spec-table tr:last-child td { border-bottom: 0; }

/* ---------- Metrics / reliability ---------- */
.metrics { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }
.metric { text-align: center; padding: 30px 18px; background: #fff; border: 1px solid var(--line); border-radius: var(--radius); }
.metric .n { font-size: 2.6rem; font-weight: 800; letter-spacing: -1px; }
.metric .l { color: var(--muted); font-size: .9rem; margin-top: 8px; }
.note { margin-top: 24px; text-align: center; color: var(--muted); font-size: .85rem; }

/* ---------- CTA / contact ---------- */
.contact { background: var(--bg-dark); color: #fff; }
.contact .section-head h2, .contact .section-head p { color: #fff; }
.contact .section-head p { color: #c7ccd4; }
.contact .tag { background: rgba(255,255,255,.12); color: #fff; }
.contact-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; margin-top: 12px; }
.ccard { background: rgba(255,255,255,.06); border: 1px solid rgba(255,255,255,.12); border-radius: var(--radius); padding: 30px; text-align: center; }
.ccard .ci { font-size: 1.6rem; margin-bottom: 14px; color: #fff; }
.ccard h4 { font-size: 1.05rem; margin-bottom: 6px; }
.ccard a, .ccard p { color: #c7ccd4; text-decoration: none; font-size: .95rem; }
.ccard a:hover { color: #fff; }

/* ---------- Footer ---------- */
.footer { background: #060606; color: #8b9099; padding: 56px 0 28px; }
.footer-top { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 32px; padding-bottom: 32px; border-bottom: 1px solid rgba(255,255,255,.08); }
.footer .brand .wordmark { color: #fff; font-size: 1.1rem; }
.footer-legal { max-width: 46ch; font-size: .85rem; margin-top: 14px; }
.footer-cols { display: flex; gap: 56px; }
.footer-cols h5 { color: #fff; font-size: .82rem; letter-spacing: 1px; text-transform: uppercase; margin-bottom: 14px; }
.footer-cols a { display: block; color: #8b9099; text-decoration: none; font-size: .9rem; margin-bottom: 9px; }
.footer-cols a:hover { color: #fff; }
.footer-bottom { padding-top: 22px; font-size: .82rem; display: flex; flex-wrap: wrap; justify-content: space-between; gap: 10px; }

/* ---------- Pills / inline ---------- */
.pill { display: inline-block; background: var(--bg-alt); border: 1px solid var(--line); border-radius: 50px; padding: 4px 12px; font-size: .8rem; color: var(--ink-soft); margin: 3px; }

/* ---------- Tech strip ---------- */
.tech-row { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 16px; }
.tech { display: flex; flex-direction: column; align-items: center; text-align: center; gap: 8px; padding: 26px 14px; background: #fff; border: 1px solid var(--line); border-radius: var(--radius); transition: transform .2s ease, box-shadow .2s ease; }
.tech:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
.tech .ti { font-size: 1.9rem; line-height: 1; }
.tech b { font-size: .95rem; color: var(--ink); }
.tech span { font-size: .78rem; color: var(--muted); }

/* ---------- Featured band (PLC + IA) ---------- */
.feature { background: var(--bg-dark); color: #fff; border-top: 1px solid rgba(255,255,255,.08); }
.feature .section-head h2 { color: #fff; }
.feature .section-head p { color: #c7ccd4; }
.feature .tag { background: rgba(255,255,255,.12); color: #fff; }
.feature-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 40px; align-items: center; }
.feature-list { list-style: none; display: grid; gap: 14px; }
.feature-list li { position: relative; padding-left: 30px; color: #d2d6dd; }
.feature-list li::before { content: "\2192"; position: absolute; left: 0; color: #fff; font-weight: 700; }
.case-box { background: rgba(255,255,255,.06); border: 1px solid rgba(255,255,255,.14); border-radius: var(--radius); padding: 28px; }
.case-tag { display: inline-block; font-size: .72rem; font-weight: 700; letter-spacing: 1.4px; text-transform: uppercase; color: var(--ink); background: #fff; border-radius: 50px; padding: 5px 12px; margin-bottom: 14px; }
.case-box h4 { font-size: 1.15rem; margin-bottom: 8px; color: #fff; }
.case-box p { color: #c7ccd4; font-size: .95rem; }
.case-box .val { margin-top: 12px; font-size: .82rem; color: #9aa3af; }

/* ---------- Curriculum (temario programa insignia) ---------- */
.curriculum { list-style: none; display: grid; gap: 14px; max-width: 840px; margin: 0 auto; }
.curriculum li { display: flex; gap: 18px; align-items: flex-start; background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 18px 22px; }
.curriculum .mod-h { flex: 0 0 56px; font-weight: 800; color: var(--accent); }
.curriculum b { display: block; color: var(--ink); }
.curriculum p { color: var(--muted); font-size: .92rem; margin-top: 2px; }

/* ---------- Caso real (experiencias) ---------- */
.case-real { max-width: 780px; margin: 32px auto 0; background: #fff; border: 1px solid var(--line); border-left: 4px solid var(--accent); border-radius: var(--radius); padding: 24px 28px; }
.case-real p { color: var(--ink-soft); margin: 12px 0 0; }

/* ---------- Legal pages (términos / privacidad) ---------- */
.legal { max-width: 820px; margin: 0 auto; padding: 120px 24px 80px; }
.legal h1 { font-size: clamp(1.8rem, 3.4vw, 2.4rem); font-weight: 800; letter-spacing: -.5px; }
.legal .updated { color: var(--muted); font-size: .9rem; margin: 8px 0 32px; }
.legal h2 { font-size: 1.15rem; font-weight: 700; color: var(--ink); margin: 34px 0 10px; }
.legal p, .legal li { color: var(--ink-soft); margin-bottom: 10px; }
.legal ul { padding-left: 22px; margin-bottom: 10px; }
.legal a { color: var(--accent); }
.legal .back { display: inline-block; margin-top: 40px; font-weight: 600; color: var(--accent); text-decoration: none; }

/* ---------- Responsive ---------- */
@media (max-width: 980px) {
    .apps, .caps, .flow, .metrics, .contact-grid { grid-template-columns: 1fr 1fr; }
    .nav-links { display: none; }
    .nav-toggle { display: block; }
    .nav-links.open {
        display: flex; flex-direction: column; align-items: flex-start; gap: 16px;
        position: absolute; top: 68px; left: 0; right: 0;
        background: #fff; padding: 20px 24px;
        border-bottom: 1px solid var(--line); box-shadow: var(--shadow);
    }
}
@media (max-width: 640px) {
    .apps, .caps, .flow, .metrics, .contact-grid, .footer-top, .footer-cols { grid-template-columns: 1fr; flex-direction: column; }
    section { padding: 64px 0; }
    .hero { padding: 116px 0 72px; }
    .hero-stats { gap: 26px; }
}

/* ============================================================
   PRINT → "Guardar como PDF" produce un brochure limpio
   ============================================================ */
@media print {
    @page { margin: 14mm; }
    .nav, .nav-toggle, .hero-actions, .float-wa, .print-hide { display: none !important; }
    body { color: #000; }
    .hero { background: #fff !important; color: #000 !important; padding: 0 0 18px; }
    .hero h1, .hero p.lead, .eyebrow, .hero-stats .stat .n, .hero-stats .stat .l { color: #000 !important; }
    .eyebrow { border-color: #000; }
    .hero::after { display: none; }
    .contact, .footer { background: #fff !important; color: #000 !important; }
    .contact .section-head h2, .contact .section-head p, .ccard, .ccard a, .ccard p, .ccard h4,
    .footer .brand .wordmark, .footer-cols h5, .footer-cols a, .footer-legal, .footer-bottom { color: #000 !important; }
    .ccard { border-color: #ccc; }
    section { padding: 22px 0; page-break-inside: avoid; }
    .app, .cap, .metric, .step, .spec-table { box-shadow: none !important; page-break-inside: avoid; }
    a { text-decoration: none; }
}