/* ==== Datalab Argentina — Static One-Pager (v2) ====
   Paleta extraída del logo:
   --blue:#1c8ad7; --pink:#655e61; --ink:#2b2f31
   Estética plana (sin gradientes/blur)
=================================================== */
:root{
  --blue:#1c8ad7;
  --pink:#655e61;
  --ink:#2b2f31;
  --bg:#f7fafc;
  --card:#ffffff;
  --line:#e6eaf0;
  --muted:#5b6676;
  --shadow:0 10px 30px rgba(0,0,0,.06);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:Inter,system-ui,-apple-system,Segoe UI,Roboto,Ubuntu,Arial;color:var(--ink);background:var(--bg);line-height:1.5}
img{max-width:100%;display:block}
.container{max-width:1100px;margin:0 auto;padding:0 16px}
.section{padding:33px 0}
.section-hd h2{margin:0;font-size:clamp(1.6rem,2.5vw,2.2rem);font-weight:900;letter-spacing:-.02em}
.section-hd p{margin:.5rem 0 0;color:var(--muted)}
.btn{display:inline-flex;align-items:center;justify-content:center;padding:12px 18px;border-radius:14px;background:var(--blue);color:#fff;text-decoration:none;font-weight:800;border:none;cursor:pointer;box-shadow:var(--shadow);transition:transform .12s ease, filter .12s ease}
.btn:hover{transform:translateY(-1px);filter:saturate(1.05)}
.btn--light{background:#fff;color:var(--ink);border:1px solid var(--line)}
.btn--ghost{background:#fff;border:1px solid var(--line);color:var(--ink)}
.site-header{position:sticky;top:0;z-index:50;background:#ffffffcc;backdrop-filter:saturate(1.2) blur(8px);border-bottom:1px solid var(--line)}
.header-inner{display:flex;align-items:center;justify-content:space-between;padding:12px 0}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;color:inherit}
.brand-logo{height:36px;width:auto;filter:drop-shadow(0 2px 6px rgba(0,0,0,.1))}
.brand-name{font-weight:900;letter-spacing:.2px}
.nav{display:none;gap:18px;align-items:center}
.nav a{color:var(--muted);text-decoration:none;font-weight:700}
.nav a:hover{color:var(--ink)}
.nav-toggle{display:inline-flex;flex-direction:column;gap:4px;background:#fff;border:1px solid var(--line);border-radius:12px;padding:10px}
.nav-toggle span{width:22px;height:2px;background:var(--ink);display:block;border-radius:4px}
@media(min-width:860px){.nav{display:flex}.nav-toggle{display:none}}

.hero{position:relative;overflow:hidden}
.hero-grid{display:grid;grid-template-columns:1fr;gap:28px;align-items:center}
@media(min-width:860px){.hero-grid{grid-template-columns:1.1fr .9fr}}
.hero-copy h1{margin:0;font-size:clamp(2rem,4vw,3rem);font-weight:900;letter-spacing:-.02em}
.brand-accent{color:var(--blue)}
.lead{color:var(--muted);font-size:1.05rem;margin:14px 0 0}
.chips{display:flex;flex-wrap:wrap;gap:8px;margin:16px 0 0;padding:0;list-style:none}
.chips li{border:1px solid var(--line);background:#fff;border-radius:999px;padding:8px 12px;font-size:.85rem;color:#334155}
.hero-cta{display:flex;gap:10px;margin-top:16px}
.hero-art{display:grid;gap:8px;justify-items:center}
.art-card{background:transparent;border:1px solid var(--line);border-radius:24px;padding:47px}
.ar-img{width:83%;height:auto;filter:drop-shadow(0 12px 20px rgba(0,0,0,.08))}
.art-caption{font-size:.8rem;color:var(--muted)}

.logos{padding-top:24px;padding-bottom:24px}
.carousel{overflow:hidden;border:1px solid var(--line);background:#fff;border-radius:22px;box-shadow:var(--shadow)}
.track{display:flex;align-items:center;gap:48px;padding:16px 24px;animation:scrollx 12s linear infinite}
.logo-item{height:54px;width:auto;opacity:.9;transition:opacity .15s ease, transform .15s ease}
.logo-item:hover{opacity:1;transform:translateY(-2px)}
@keyframes scrollx{0%{transform:translateX(0)}100%{transform:translateX(-50%)}}

.cards{display:grid;grid-template-columns:1fr;gap:16px;margin-top:20px}
.card{background:var(--card);border:1px solid var(--line);border-radius:22px;padding:20px;box-shadow:var(--shadow)}
.card h3{margin:0 0 6px 0}
.card p{margin:0;color:var(--muted)}
@media(min-width:860px){.cards{grid-template-columns:repeat(3,1fr)}}

.projects{display:grid;grid-template-columns:1fr;gap:16px;margin-top:20px}
.project{display:block;background:var(--card);border:1px solid var(--line);border-radius:22px;padding:20px;text-decoration:none;color:inherit;box-shadow:var(--shadow);transition:transform .12s ease, box-shadow .12s ease}
.project:hover{transform:translateY(-3px);box-shadow:0 16px 36px rgba(0,0,0,.08)}
.project-top{display:flex;gap:8px;align-items:center;justify-content:space-between;flex-wrap:wrap}
.tag{display:inline-block;background:rgba(0,0,0,.04);color:#0f172a;border:1px solid var(--line);padding:4px 8px;border-radius:999px;font-size:.75rem;margin-left:6px}

.grid{display:grid;grid-template-columns:1fr;gap:16px;margin-top:20px}
.box{background:var(--card);border:1px solid var(--line);border-radius:22px;padding:20px;box-shadow:var(--shadow)}
.box h3{margin:0 0 8px 0}
.box ul{margin:0;padding-left:18px;color:var(--muted)}
@media(min-width:860px){.grid{grid-template-columns:repeat(4,1fr)}}

.cta{display:flex;align-items:center;justify-content:space-between;gap:12px;border-radius:26px;background:var(--blue);color:#fff;padding:24px;border:1px solid rgba(0,0,0,.04);box-shadow:0 18px 40px rgba(0,0,0,.08)}
.cta h3{margin:.2rem 0;font-size:clamp(1.2rem,2.5vw,1.6rem)}
.cta p{margin:.2rem 0;color:#ffffffcc}

.contact-grid{display:grid;grid-template-columns:1fr;gap:16px;margin-top:20px}
.form{display:grid;gap:10px;background:var(--card);border:1px solid var(--line);border-radius:22px;padding:18px;box-shadow:var(--shadow)}
.form input,.form textarea{width:100%;padding:12px 14px;border:1px solid var(--line);border-radius:12px;font:inherit}
.form button{justify-self:start}
.contact-card{background:var(--card);border:1px solid var(--line);border-radius:22px;padding:18px;box-shadow:var(--shadow)}
.contact-logo{width:140px;margin-bottom:8px;filter:drop-shadow(0 2px 6px rgba(0,0,0,.08))}
.contact-card ul{list-style:none;margin:0;padding:0;color:var(--muted)}
.contact-card li+li{margin-top:6px}
@media(min-width:860px){.contact-grid{grid-template-columns:2fr 1fr}}

.site-footer{border-top:1px solid var(--line);background:#fff}
.footer-inner{display:flex;flex-direction:column;gap:8px;align-items:center;justify-content:space-between;padding:24px 0}
.techs{display:flex;flex-wrap:wrap;gap:8px;justify-content:center}
.techs span{background:#fff;border:1px solid var(--line);border-radius:999px;padding:6px 10px;font-size:.85rem}
@media(min-width:860px){.footer-inner{flex-direction:row}}

.backtop{position:fixed;right:18px;bottom:18px;height:44px;width:44px;border-radius:12px;border:1px solid var(--line);background:#fff;color:var(--ink);box-shadow:var(--shadow);cursor:pointer;display:grid;place-items:center;opacity:0;pointer-events:none;transition:opacity .2s ease, transform .2s ease}
.backtop.show{opacity:1;pointer-events:auto}
.backtop:hover{transform:translateY(-2px)}

/* === Dark mode ========================================================= */
:root[data-theme="dark"]{
  --blue:#1c8ad7;
  --pink:#e41367;
  --ink:#e5e9ef;
  --bg:#0b0f14;
  --card:#0f141a;
  --line:#1e2630;
  --muted:#9aa4b2;
  --shadow:0 10px 30px rgba(0,0,0,.5);
}
:root[data-theme="dark"] body{color:var(--ink);background:var(--bg)}
:root[data-theme="dark"] .site-header{background:rgba(15,20,26,.85);border-color:var(--line)}
:root[data-theme="dark"] .nav a{color:var(--muted)}
:root[data-theme="dark"] .nav a:hover{color:var(--ink)}
:root[data-theme="dark"] .nav-toggle{background:var(--card);border-color:var(--line)}
:root[data-theme="dark"] .chips li{background:var(--card);border-color:var(--line);color:var(--muted)}
:root[data-theme="dark"] .art-card{border-color:var(--line)}
:root[data-theme="dark"] .carousel{background:var(--card);border-color:var(--line)}
:root[data-theme="dark"] .project,
:root[data-theme="dark"] .card,
:root[data-theme="dark"] .box,
:root[data-theme="dark"] .form,
:root[data-theme="dark"] .contact-card{background:var(--card);border-color:var(--line)}
:root[data-theme="dark"] .btn--ghost{background:var(--card);border-color:var(--line);color:var(--ink)}
:root[data-theme="dark"] .btn--light{background:var(--card);color:var(--ink);border-color:var(--line)}
:root[data-theme="dark"] .site-footer{background:var(--card);border-color:var(--line)}
:root[data-theme="dark"] .techs span{background:var(--card);border-color:var(--line)}
:root[data-theme="dark"] .backtop{background:var(--card);border-color:var(--line);color:var(--ink)}

.theme-toggle{display:flex;align-items:center;gap:8px;margin-right:10px}
.theme-toggle input{display:none}
.theme-toggle label{cursor:pointer;user-select:none;font-size:18px;filter:grayscale(.3);}

/* Acento de lema */
.tagline-accent{
  color: var(--blue);          /* usa tu azul de marca */
  font-weight: 600;            /* opcional, da un poquito más de énfasis */
}
/* Fade suave para el tagline */
.hero-tagline { transition: opacity .35s ease; }
.hero-tagline.is-fading { opacity: 0; }
.tagline-accent { color: var(--blue); font-weight: 600; }