/* ============================================================================
   nt-ui.css — Sistema de diseño NovaTekny (standalone, sin dependencias)
   Destilado de index.html (estándar de oro). Úsalo en páginas secundarias
   (demos, reservar, gestionar-cita, demo-*) para que TODO calce premium y
   coherente sin necesitar Tailwind. Cárgalo con:
     <link rel="stylesheet" href="/assets/nt-ui.css">
     <script src="/assets/nt-ui.js" defer></script>
   ========================================================================== */

:root {
  /* Marca — navy / cyan / naranja nova */
  --nt-bg:        #050a14;
  --nt-bg-2:      #0b0e1a;
  --nt-panel:     rgba(255, 255, 255, 0.03);
  --nt-cyan:      #22D3EE;
  --nt-cyan-d:    #06B6D4;
  --nt-orange:    #FF6B1A;
  --nt-orange-l:  #FFB547;
  --nt-ink:       #e7edf6;
  --nt-muted:     #94a3b8;
  --nt-line:      rgba(255, 255, 255, 0.09);
  --nt-line-hi:   rgba(34, 211, 238, 0.40);
  /* Tipografía */
  --nt-font:      'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
  --nt-mono:      'JetBrains Mono', ui-monospace, monospace;
  /* Radios + sombras */
  --nt-r:         16px;
  --nt-r-pill:    999px;
  --nt-shadow:    0 18px 40px rgba(0, 0, 0, 0.5);
  --nt-glow-cta:  0 12px 40px -8px rgba(255, 107, 26, 0.5);
}

/* ---------- Base + glows ambientales (teal arriba-dcha + naranja abajo-izda) ---------- */
.nt-body {
  margin: 0;
  font-family: var(--nt-font);
  color: var(--nt-ink);
  background-color: var(--nt-bg);
  background-image:
    radial-gradient(ellipse 70% 50% at 105% -5%, rgba(6, 182, 212, 0.10), transparent 65%),
    radial-gradient(ellipse 70% 50% at -5% 105%, rgba(255, 107, 26, 0.07), transparent 65%);
  background-attachment: fixed;
  -webkit-font-smoothing: antialiased;
}
/* Rejilla sutil de fondo (envolver contenido o aplicar a un ::before fijo) */
.nt-grid {
  background-image:
    linear-gradient(rgba(34, 211, 238, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(34, 211, 238, 0.04) 1px, transparent 1px);
  background-size: 48px 48px;
}
.nt-grid-fixed::before {
  content: ""; position: fixed; inset: 0; z-index: 0; pointer-events: none;
  background-image:
    linear-gradient(rgba(34, 211, 238, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(34, 211, 238, 0.04) 1px, transparent 1px);
  background-size: 48px 48px;
}

/* ---------- Wordmark ---------- */
.nt-wordmark { font-weight: 800; letter-spacing: -0.02em; }
.nt-wordmark b { color: #fff; font-weight: 800; }
.nt-wordmark span { color: var(--nt-cyan); font-weight: 800; }

/* ---------- Texto en gradiente nova ---------- */
.nt-gradient {
  background: linear-gradient(90deg, #22D3EE 0%, #06B6D4 50%, #FF6B1A 100%);
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent;
}

/* ---------- Superficie glass / card ---------- */
.nt-card {
  background: var(--nt-panel);
  border: 1px solid var(--nt-line);
  border-radius: var(--nt-r);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
}
.nt-card-hover { transition: border-color .3s ease, transform .3s ease, background .3s ease; }
.nt-card-hover:hover {
  border-color: var(--nt-line-hi);
  background: rgba(6, 182, 212, 0.04);
  transform: translateY(-4px);
}

/* ---------- Botones ---------- */
.nt-btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  font-family: var(--nt-font); font-weight: 700; font-size: 15px; line-height: 1;
  padding: 13px 24px; border-radius: var(--nt-r-pill); border: none;
  cursor: pointer; text-decoration: none; transition: transform .2s ease, box-shadow .3s ease, border-color .2s ease, background .3s ease;
}
.nt-btn-primary { position: relative; background: linear-gradient(90deg, #06B6D4, #22D3EE); color: #04121a; z-index: 0; }
.nt-btn-primary::before {
  content: ''; position: absolute; inset: -2px; border-radius: inherit; z-index: -1;
  background: linear-gradient(90deg, #FF6B1A, #22D3EE, #FF6B1A); background-size: 200% 100%;
  opacity: 0; transition: opacity .3s ease; animation: nt-shimmer 3s linear infinite;
}
.nt-btn-primary:hover { transform: translateY(-2px); box-shadow: var(--nt-glow-cta); }
.nt-btn-primary:hover::before { opacity: 1; }
.nt-btn-ghost { background: transparent; color: var(--nt-ink); border: 1px solid var(--nt-line); }
.nt-btn-ghost:hover { border-color: var(--nt-cyan); transform: translateY(-1px); }

/* ---------- Pill / badge ---------- */
.nt-pill {
  display: inline-flex; align-items: center; gap: 7px;
  font-family: var(--nt-mono); font-size: 12px; font-weight: 600; letter-spacing: .02em;
  color: var(--nt-cyan); background: rgba(34, 211, 238, 0.08);
  border: 1px solid rgba(34, 211, 238, 0.25); border-radius: var(--nt-r-pill); padding: 6px 13px;
}
.nt-pill-dot { width: 7px; height: 7px; border-radius: 50%; background: var(--nt-cyan); box-shadow: 0 0 8px var(--nt-cyan); }

/* ---------- Section header ---------- */
.nt-eyebrow { font-family: var(--nt-mono); font-size: 13px; font-weight: 600; color: var(--nt-cyan); letter-spacing: .04em; text-transform: uppercase; }
.nt-h2 { font-size: clamp(26px, 4vw, 40px); font-weight: 800; letter-spacing: -.02em; margin: 12px 0 14px; }
.nt-lead { font-size: 16px; line-height: 1.65; color: var(--nt-muted); max-width: 60ch; }

/* ---------- Language switcher (idéntico a index.html / reservar.html) ---------- */
.ntlang { position: relative; }
.ntlang-btn { display: inline-flex; align-items: center; gap: 6px; background: transparent;
  border: 1px solid rgba(255,255,255,.1); color: #e2e8f0; border-radius: 999px;
  padding: 7px 13px; font-size: 13px; font-weight: 600; cursor: pointer; transition: border-color .2s; }
.ntlang-btn:hover { border-color: #22D3EE; }
.ntlang-menu { position: absolute; right: 0; top: calc(100% + 8px); background: #0b0e1a;
  border: 1px solid rgba(255,255,255,.1); border-radius: 12px; box-shadow: 0 18px 40px rgba(0,0,0,.5);
  padding: 6px; min-width: 150px; display: none; z-index: 60; }
.ntlang-menu.open { display: block; }
.ntlang-menu button { display: block; width: 100%; text-align: left; background: transparent; border: none;
  color: #e2e8f0; padding: 9px 12px; border-radius: 8px; font-size: 14px; cursor: pointer; }
.ntlang-menu button:hover { background: rgba(255,255,255,.06); }
.ntlang-menu button[aria-current="true"] { color: #22D3EE; font-weight: 700; }

/* ---------- Scroll reveal (activado por nt-ui.js) ---------- */
.nt-reveal { opacity: 0; transform: translateY(24px); transition: opacity .8s ease, transform .8s ease; }
.nt-reveal.nt-visible { opacity: 1; transform: translateY(0); }

/* ---------- Animaciones ---------- */
@keyframes nt-shimmer { 0% { background-position: -200% 0 } 100% { background-position: 200% 0 } }
@keyframes nt-float { 0%, 100% { transform: translateY(0) } 50% { transform: translateY(-12px) } }
@media (prefers-reduced-motion: reduce) {
  .nt-reveal { opacity: 1; transform: none; transition: none; }
  .nt-btn-primary::before { animation: none; }
  * { scroll-behavior: auto !important; }
}

/* ---------- Utilidades finas ---------- */
.nt-container { width: 100%; max-width: 1120px; margin: 0 auto; padding: 0 20px; position: relative; z-index: 1; }
::selection { background: rgba(34, 211, 238, 0.28); color: #fff; }
.nt-body ::-webkit-scrollbar { width: 10px; }
.nt-body ::-webkit-scrollbar-track { background: #050505; }
.nt-body ::-webkit-scrollbar-thumb { background: #1E3A8A; border-radius: 4px; }
.nt-body ::-webkit-scrollbar-thumb:hover { background: #06B6D4; }
.nt-body *:focus-visible { outline: 2px solid #22D3EE; outline-offset: 3px; border-radius: 4px; }