/* ==========================================================
   tecnoan.com.ar — Hoja de estilos principal
   Paleta: #0a0e1a | #131929 | #1e2d47 | #00d4ff | #ff6b35
   ========================================================== */

:root {
  --dark-bg:       #0a0e1a;
  --dark-card:     #131929;
  --dark-border:   #1e2d47;
  --accent-blue:   #00d4ff;
  --accent-orange: #ff6b35;
  --accent-green:  #00e676;
  --text-light:    #e8eaf0;
  --text-muted:    #8892a4;
  --gradient-hero: linear-gradient(135deg, #0a0e1a 0%, #0d1b35 50%, #091529 100%);
}

/* ── Reset ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
  background: var(--dark-bg);
  color: var(--text-light);
  line-height: 1.6;
  overflow-x: hidden;
}
a { color: var(--accent-blue); text-decoration: none; }
a:hover { color: var(--accent-orange); }
img { max-width: 100%; height: auto; }

/* ── Scrollbar ── */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--dark-bg); }
::-webkit-scrollbar-thumb { background: var(--accent-blue); border-radius: 3px; }

/* ══════════════════════════════════════
   NAVBAR
══════════════════════════════════════ */
.navbar {
  position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
  background: rgba(10, 14, 26, 0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--dark-border);
  padding: 0 1.5rem;
  height: 64px;
  display: flex; align-items: center; justify-content: space-between;
  transition: background .3s;
}
.navbar.scrolled { background: rgba(10, 14, 26, 0.99); }

.navbar-brand {
  display: flex; align-items: center; gap: .6rem;
  font-size: 1.4rem; font-weight: 700; color: var(--text-light);
}
.navbar-brand span { color: var(--accent-blue); }
.navbar-brand .dot { color: var(--accent-orange); }

.nav-links {
  display: flex; align-items: center; gap: .25rem;
  list-style: none;
}
.nav-links a {
  color: var(--text-muted);
  padding: .45rem .85rem;
  border-radius: 6px;
  font-size: .875rem;
  font-weight: 500;
  transition: color .2s, background .2s;
}
.nav-links a:hover, .nav-links a.active {
  color: var(--accent-blue);
  background: rgba(0, 212, 255, .08);
}

.nav-cta {
  background: var(--accent-blue) !important;
  color: var(--dark-bg) !important;
  font-weight: 700 !important;
  padding: .45rem 1.1rem !important;
}
.nav-cta:hover {
  background: var(--accent-orange) !important;
  color: #fff !important;
}

/* Hamburger */
.nav-toggle {
  display: none; flex-direction: column; gap: 5px;
  cursor: pointer; background: none; border: none; padding: 4px;
}
.nav-toggle span {
  display: block; width: 24px; height: 2px;
  background: var(--text-light); border-radius: 2px;
  transition: transform .3s, opacity .3s;
}
.nav-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ══════════════════════════════════════
   HERO
══════════════════════════════════════ */
.hero {
  min-height: 100vh;
  background: var(--gradient-hero);
  display: flex; align-items: center;
  padding: 80px 1.5rem 4rem;
  position: relative; overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute; inset: 0;
  background:
    radial-gradient(ellipse 60% 50% at 80% 50%, rgba(0,212,255,.07) 0%, transparent 70%),
    radial-gradient(ellipse 40% 40% at 20% 80%, rgba(255,107,53,.05) 0%, transparent 70%);
}
.hero-grid {
  max-width: 1200px; margin: 0 auto;
  display: grid; grid-template-columns: 1fr 1fr; gap: 4rem;
  align-items: center; position: relative; z-index: 1;
}
.hero-badge {
  display: inline-flex; align-items: center; gap: .5rem;
  background: rgba(0,212,255,.1); border: 1px solid rgba(0,212,255,.3);
  color: var(--accent-blue); border-radius: 50px;
  padding: .3rem .9rem; font-size: .8rem; font-weight: 600;
  text-transform: uppercase; letter-spacing: .05em;
  margin-bottom: 1.25rem;
}
.hero-badge::before { content: '●'; font-size: .5rem; animation: blink 1.5s infinite; }
@keyframes blink { 0%,100%{opacity:1} 50%{opacity:.3} }

.hero h1 {
  font-size: clamp(2rem, 4vw, 3.5rem);
  font-weight: 800; line-height: 1.15;
  margin-bottom: 1.25rem;
}
.hero h1 em { font-style: normal; color: var(--accent-blue); }
.hero h1 strong { color: var(--accent-orange); }

.hero p {
  color: var(--text-muted); font-size: 1.05rem;
  max-width: 480px; margin-bottom: 2rem;
}

.hero-actions { display: flex; gap: 1rem; flex-wrap: wrap; }

/* Floating visual */
.hero-visual {
  display: grid; grid-template-columns: 1fr 1fr; gap: 1rem;
}
.stat-card {
  background: var(--dark-card);
  border: 1px solid var(--dark-border);
  border-radius: 12px; padding: 1.25rem;
  text-align: center;
  animation: float 4s ease-in-out infinite;
}
.stat-card:nth-child(2) { animation-delay: .5s; }
.stat-card:nth-child(3) { animation-delay: 1s; }
.stat-card:nth-child(4) { animation-delay: 1.5s; }
@keyframes float { 0%,100%{transform:translateY(0)} 50%{transform:translateY(-8px)} }
.stat-card .num { font-size: 2rem; font-weight: 800; color: var(--accent-blue); }
.stat-card .lbl { font-size: .78rem; color: var(--text-muted); margin-top: .2rem; }

/* ══════════════════════════════════════
   BOTONES
══════════════════════════════════════ */
.btn {
  display: inline-flex; align-items: center; gap: .5rem;
  padding: .75rem 1.75rem; border-radius: 8px;
  font-size: .95rem; font-weight: 600;
  cursor: pointer; border: none;
  transition: transform .2s, box-shadow .2s, background .2s;
}
.btn:hover { transform: translateY(-2px); }
.btn-primary {
  background: var(--accent-blue); color: var(--dark-bg);
  box-shadow: 0 4px 20px rgba(0,212,255,.3);
}
.btn-primary:hover { background: #00bfef; box-shadow: 0 6px 28px rgba(0,212,255,.45); color: var(--dark-bg); }
.btn-outline {
  background: transparent;
  border: 2px solid var(--dark-border);
  color: var(--text-light);
}
.btn-outline:hover { border-color: var(--accent-blue); color: var(--accent-blue); }
.btn-orange {
  background: var(--accent-orange); color: #fff;
  box-shadow: 0 4px 20px rgba(255,107,53,.3);
}
.btn-orange:hover { background: #e85a25; color: #fff; }
.btn-green {
  background: var(--accent-green); color: var(--dark-bg);
  box-shadow: 0 4px 20px rgba(0,230,118,.3);
}
.btn-green:hover { background: #00c864; color: var(--dark-bg); }
.btn-sm { padding: .5rem 1.1rem; font-size: .85rem; }
.btn-lg { padding: .9rem 2.2rem; font-size: 1.05rem; }
.btn-full { width: 100%; justify-content: center; }

/* ══════════════════════════════════════
   SECCIONES GENERALES
══════════════════════════════════════ */
section { padding: 5rem 1.5rem; }
.container { max-width: 1200px; margin: 0 auto; }

.section-tag {
  display: inline-block;
  color: var(--accent-blue); font-size: .8rem;
  font-weight: 700; text-transform: uppercase; letter-spacing: .1em;
  margin-bottom: .75rem;
}
.section-title {
  font-size: clamp(1.6rem, 3vw, 2.5rem);
  font-weight: 800; margin-bottom: 1rem;
}
.section-desc {
  color: var(--text-muted); font-size: 1rem;
  max-width: 540px;
}
.section-header { margin-bottom: 3.5rem; }
.section-header.center { text-align: center; }
.section-header.center .section-desc { margin: 0 auto; }

/* ══════════════════════════════════════
   SERVICIOS
══════════════════════════════════════ */
#servicios { background: var(--dark-card); }
.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.5rem;
}
.service-card {
  background: var(--dark-bg);
  border: 1px solid var(--dark-border);
  border-radius: 14px; padding: 2rem;
  transition: border-color .3s, transform .3s, box-shadow .3s;
  cursor: default;
}
.service-card:hover {
  border-color: var(--accent-blue);
  transform: translateY(-6px);
  box-shadow: 0 12px 40px rgba(0,212,255,.1);
}
.service-icon {
  width: 52px; height: 52px; border-radius: 12px;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.6rem; margin-bottom: 1.25rem;
}
.icon-blue   { background: rgba(0,212,255,.12); }
.icon-orange { background: rgba(255,107,53,.12); }
.icon-green  { background: rgba(0,230,118,.12); }
.icon-purple { background: rgba(149,97,255,.12); }

.service-card h3 { font-size: 1.1rem; font-weight: 700; margin-bottom: .6rem; }
.service-card p  { color: var(--text-muted); font-size: .9rem; }
.service-card ul { color: var(--text-muted); font-size: .875rem; margin-top: .75rem; padding-left: 1.2rem; }
.service-card ul li { margin-bottom: .3rem; }

/* ══════════════════════════════════════
   TECNOLOGÍAS / STACK
══════════════════════════════════════ */
#tecnologias { background: var(--dark-bg); }
.tech-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  gap: 1rem;
}
.tech-pill {
  background: var(--dark-card);
  border: 1px solid var(--dark-border);
  border-radius: 10px; padding: .8rem 1rem;
  text-align: center; font-size: .85rem; font-weight: 600;
  color: var(--text-muted);
  transition: border-color .2s, color .2s;
}
.tech-pill:hover { border-color: var(--accent-blue); color: var(--accent-blue); }

/* ══════════════════════════════════════
   ESQUEMA / ARQUITECTURA
══════════════════════════════════════ */
#esquema { background: var(--dark-card); }
.schema-wrapper {
  background: var(--dark-bg);
  border: 1px solid var(--dark-border);
  border-radius: 16px; padding: 2.5rem;
  overflow-x: auto;
}
.schema-diagram {
  display: flex; flex-direction: column; gap: 2rem;
  min-width: 640px;
}
.schema-layer {
  display: flex; align-items: center; gap: 1rem;
}
.layer-label {
  width: 130px; min-width: 130px;
  font-size: .75rem; font-weight: 700;
  text-transform: uppercase; letter-spacing: .08em;
  color: var(--text-muted);
  text-align: right; padding-right: 1rem;
  border-right: 2px solid var(--dark-border);
}
.layer-nodes {
  display: flex; gap: .75rem; flex-wrap: wrap;
}
.node {
  display: flex; align-items: center; gap: .5rem;
  background: var(--dark-card);
  border: 1px solid var(--dark-border);
  border-radius: 8px; padding: .5rem 1rem;
  font-size: .85rem; font-weight: 600; white-space: nowrap;
}
.node.blue   { border-color: rgba(0,212,255,.5);   color: var(--accent-blue); }
.node.orange { border-color: rgba(255,107,53,.5);  color: var(--accent-orange); }
.node.green  { border-color: rgba(0,230,118,.5);   color: var(--accent-green); }
.node.purple { border-color: rgba(149,97,255,.5);  color: #9561ff; }
.node.yellow { border-color: rgba(255,214,0,.5);   color: #ffd600; }
.node-dot {
  width: 8px; height: 8px; border-radius: 50%;
  background: currentColor; flex-shrink: 0;
}
.schema-arrow {
  text-align: center; color: var(--dark-border);
  font-size: 1.5rem; line-height: 1;
}

/* ══════════════════════════════════════
   PAGOS
══════════════════════════════════════ */
#pagos { background: var(--dark-bg); }
.payments-grid {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1.5rem;
}
.payment-card {
  background: var(--dark-card);
  border: 1px solid var(--dark-border);
  border-radius: 16px; padding: 2rem;
  display: flex; flex-direction: column;
}
.payment-card.featured {
  border-color: var(--accent-blue);
  box-shadow: 0 0 30px rgba(0,212,255,.08);
}
.payment-logo {
  font-size: 2.2rem; margin-bottom: 1rem;
}
.payment-card h3 { font-size: 1.2rem; font-weight: 700; margin-bottom: .5rem; }
.payment-card p  { color: var(--text-muted); font-size: .9rem; flex: 1; }
.payment-features {
  list-style: none; margin: 1rem 0;
}
.payment-features li {
  display: flex; align-items: center; gap: .5rem;
  font-size: .875rem; color: var(--text-muted);
  padding: .3rem 0; border-bottom: 1px solid var(--dark-border);
}
.payment-features li:last-child { border: none; }
.payment-features li::before { content: '✓'; color: var(--accent-green); font-weight: 700; }
.badge-consult {
  display: inline-block;
  background: rgba(255,214,0,.1); color: #ffd600;
  border: 1px solid rgba(255,214,0,.3);
  border-radius: 20px; padding: .2rem .8rem;
  font-size: .75rem; font-weight: 600; margin-bottom: .75rem;
}

/* ══════════════════════════════════════
   CONTACTO
══════════════════════════════════════ */
#contacto { background: var(--dark-card); }
.contact-wrapper {
  display: grid; grid-template-columns: 1fr 1.4fr; gap: 4rem;
  align-items: start;
}
.contact-info h3 { font-size: 1.3rem; font-weight: 700; margin-bottom: 1.5rem; }
.contact-item {
  display: flex; gap: 1rem;
  margin-bottom: 1.5rem;
}
.contact-item-icon {
  width: 44px; height: 44px; border-radius: 10px;
  background: rgba(0,212,255,.1); border: 1px solid rgba(0,212,255,.2);
  display: flex; align-items: center; justify-content: center;
  font-size: 1.2rem; flex-shrink: 0;
}
.contact-item-text { font-size: .9rem; }
.contact-item-text strong { display: block; color: var(--text-light); margin-bottom: .15rem; }
.contact-item-text span { color: var(--text-muted); }

/* Formulario */
.contact-form {
  background: var(--dark-bg);
  border: 1px solid var(--dark-border);
  border-radius: 16px; padding: 2.5rem;
}
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.form-group { margin-bottom: 1.25rem; }
.form-group label {
  display: block; font-size: .85rem; font-weight: 600;
  color: var(--text-muted); margin-bottom: .4rem;
}
.form-group label span { color: var(--accent-orange); }
.form-control {
  width: 100%; background: var(--dark-card);
  border: 1px solid var(--dark-border);
  border-radius: 8px; padding: .7rem 1rem;
  color: var(--text-light); font-size: .9rem;
  transition: border-color .2s, box-shadow .2s;
  font-family: inherit;
}
.form-control:focus {
  outline: none;
  border-color: var(--accent-blue);
  box-shadow: 0 0 0 3px rgba(0,212,255,.12);
}
.form-control::placeholder { color: var(--text-muted); opacity: .6; }
textarea.form-control { resize: vertical; min-height: 120px; }
select.form-control { cursor: pointer; }
select.form-control option { background: var(--dark-card); }

.form-check {
  display: flex; align-items: flex-start; gap: .6rem;
  font-size: .85rem; color: var(--text-muted);
}
.form-check input { margin-top: .1rem; accent-color: var(--accent-blue); }

/* Alert messages */
.alert {
  padding: .85rem 1.1rem; border-radius: 8px;
  font-size: .9rem; margin-bottom: 1rem;
  display: none;
}
.alert.show { display: block; }
.alert-success { background: rgba(0,230,118,.1); border: 1px solid rgba(0,230,118,.3); color: var(--accent-green); }
.alert-error   { background: rgba(255,107,53,.1); border: 1px solid rgba(255,107,53,.3); color: var(--accent-orange); }
.alert-info    { background: rgba(0,212,255,.1);  border: 1px solid rgba(0,212,255,.3);  color: var(--accent-blue); }

/* ══════════════════════════════════════
   FOOTER
══════════════════════════════════════ */
footer {
  background: #060910;
  border-top: 1px solid var(--dark-border);
  padding: 3.5rem 1.5rem 1.5rem;
}
.footer-grid {
  max-width: 1200px; margin: 0 auto;
  display: grid; grid-template-columns: 2fr 1fr 1fr 1fr; gap: 3rem;
  margin-bottom: 2.5rem;
}
.footer-brand p { color: var(--text-muted); font-size: .88rem; margin-top: .75rem; max-width: 280px; line-height: 1.7; }
.footer-col h4 { font-size: .9rem; font-weight: 700; margin-bottom: 1rem; color: var(--text-light); }
.footer-col ul { list-style: none; }
.footer-col ul li { margin-bottom: .55rem; }
.footer-col ul li a { color: var(--text-muted); font-size: .875rem; transition: color .2s; }
.footer-col ul li a:hover { color: var(--accent-blue); }

.footer-bottom {
  max-width: 1200px; margin: 0 auto;
  padding-top: 1.5rem; border-top: 1px solid var(--dark-border);
  display: flex; justify-content: space-between; align-items: center;
  flex-wrap: wrap; gap: 1rem;
  font-size: .82rem; color: var(--text-muted);
}
.footer-bottom a { color: var(--text-muted); }
.footer-bottom a:hover { color: var(--accent-blue); }

/* ══════════════════════════════════════
   UTILIDADES
══════════════════════════════════════ */
.text-blue   { color: var(--accent-blue); }
.text-orange { color: var(--accent-orange); }
.text-green  { color: var(--accent-green); }
.text-muted  { color: var(--text-muted); }
.divider { width: 48px; height: 3px; background: var(--accent-blue); border-radius: 2px; margin: 1rem 0 1.5rem; }
.divider.center { margin: 1rem auto 1.5rem; }

/* Spinner */
.spinner {
  display: inline-block; width: 18px; height: 18px;
  border: 2px solid rgba(255,255,255,.3);
  border-radius: 50%; border-top-color: #fff;
  animation: spin .7s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* Fade in on scroll */
.reveal { opacity: 0; transform: translateY(30px); transition: opacity .6s, transform .6s; }
.reveal.visible { opacity: 1; transform: none; }

/* ══════════════════════════════════════
   RESPONSIVE
══════════════════════════════════════ */
@media (max-width: 1024px) {
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 2rem; }
  .footer-brand { grid-column: 1 / -1; }
}

@media (max-width: 768px) {
  .nav-links {
    position: fixed; top: 64px; left: 0; right: 0;
    background: rgba(10, 14, 26, .98);
    flex-direction: column; align-items: stretch;
    padding: 1rem; gap: .3rem;
    transform: translateY(-120%); opacity: 0;
    transition: transform .35s, opacity .35s;
    border-bottom: 1px solid var(--dark-border);
  }
  .nav-links.open { transform: translateY(0); opacity: 1; }
  .nav-links a { padding: .7rem 1rem; font-size: 1rem; }
  .nav-toggle { display: flex; }

  .hero-grid { grid-template-columns: 1fr; gap: 2.5rem; text-align: center; }
  .hero-actions { justify-content: center; }
  .hero p { margin: 0 auto 2rem; }
  .hero-visual { max-width: 380px; margin: 0 auto; }

  .contact-wrapper { grid-template-columns: 1fr; gap: 2rem; }
  .form-row { grid-template-columns: 1fr; }

  .schema-wrapper { padding: 1.25rem; }
  .layer-label { width: 90px; min-width: 90px; font-size: .7rem; }

  .footer-grid { grid-template-columns: 1fr 1fr; }
  .footer-bottom { flex-direction: column; text-align: center; }
}

@media (max-width: 480px) {
  section { padding: 3.5rem 1rem; }
  .services-grid { grid-template-columns: 1fr; }
  .payments-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .hero-visual { grid-template-columns: 1fr 1fr; }
  .stat-card .num { font-size: 1.6rem; }
}