/* ═══════════════════════════════════════════════════
   TECNIKIDS MÉXICO — Signal Design System v3
   Font: Outfit (display + body) · Space Mono (tech accents)
   ═══════════════════════════════════════════════════ */
@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@300;400;500;600;700;800;900&family=Space+Mono:wght@400;700&display=swap');

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  /* Core palette */
  --void:        #070914;
  --deep:        #0D0F1E;
  --surface:     #14172B;
  --raised:      #1B1F38;
  --border:      rgba(255,255,255,0.06);
  --border-m:    rgba(255,255,255,0.11);

  /* Brand accents */
  --purple:      #7C3AED;
  --purple-soft: #9B6FF0;
  --purple-glow: rgba(124,58,237,0.45);
  --teal:        #2DD4BF;
  --teal-soft:   #5EEAD4;
  --teal-glow:   rgba(45,212,191,0.4);
  --amber:       #F59E0B;
  --amber-soft:  #FCD34D;

  /* Text */
  --txt-1:  #FFFFFF;
  --txt-2:  rgba(255,255,255,0.6);
  --txt-3:  rgba(255,255,255,0.35);

  /* Light mode */
  --lt-bg:      #F7F8FC;
  --lt-card:    #FFFFFF;
  --lt-border:  rgba(20,23,43,0.08);
  --lt-txt-1:   #0D0F1E;
  --lt-txt-2:   #4A5168;

  /* Fonts */
  --f-display: 'Outfit', sans-serif;
  --f-body:    'Outfit', sans-serif;
  --f-mono:    'Space Mono', monospace;

  /* ── Legacy aliases (sub-pages compatibility) ── */
  --indigo:        #1E1B4B;
  --indigo-deep:   #0F0E2A;
  --purple-light:  #A78BFA;
  --purple-mid:    #6D28D9;
  --cyan:          #2DD4BF;
  --cyan-light:    #5EEAD4;
  --amber-light:   #FCD34D;
  --gray:          #64748B;
  --gray-light:    #94A3B8;
  --gray-bg:       #F0F4FF;
  --dark:          #0D0F1E;
  --dark-2:        #13113A;
  --white:         #FFFFFF;
  --border-dark:   rgba(255,255,255,0.07);
  --border-purple: rgba(124,58,237,0.3);
  --lt-bg:         #F0F4FF;
  --lt-card:       #FFFFFF;
  --lt-border:     rgba(20,23,43,0.08);
  --lt-txt-1:      #0D0F1E;
  --lt-txt-2:      #4A5168;
}

html { scroll-behavior: smooth; }
body {
  font-family: var(--f-body); background: var(--void);
  color: var(--txt-1); overflow-x: hidden; line-height: 1.6;
}
img { max-width: 100%; display: block; }

/* ─── Grain overlay (subtle) ─── */
body::after {
  content: '';
  position: fixed; inset: 0; z-index: 9000;
  pointer-events: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='300' height='300'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='300' height='300' filter='url(%23n)' opacity='1'/%3E%3C/svg%3E");
  opacity: 0.032;
  background-size: 200px 200px;
}

/* ═══════════════════════════
   NAVBAR
═══════════════════════════ */
#navbar {
  position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
  height: 68px; display: flex; align-items: center; justify-content: space-between;
  padding: 0 48px;
  background: rgba(7,9,20,0.72);
  backdrop-filter: blur(28px) saturate(1.5);
  border-bottom: 1px solid var(--border);
  transition: background 0.4s, border-color 0.4s;
}
#navbar.scrolled { background: rgba(7,9,20,0.95); border-color: var(--border-m); }

.nav-logo img { height: 38px; }

.nav-links { display: flex; align-items: center; gap: 2px; }
.nav-links > a, .nav-dropdown > a {
  color: var(--txt-2); font-family: var(--f-body); font-size: 0.875rem; font-weight: 500;
  text-decoration: none; padding: 8px 14px; border-radius: 8px;
  transition: color 0.18s, background 0.18s;
}
.nav-links > a:hover, .nav-dropdown > a:hover { color: var(--txt-1); background: rgba(255,255,255,0.06); }

.nav-cta {
  margin-left: 10px !important; padding: 9px 22px !important;
  background: var(--purple) !important; color: #fff !important;
  border-radius: 50px !important; font-weight: 600 !important;
  box-shadow: 0 0 0 1px rgba(255,255,255,0.1) inset, 0 4px 16px var(--purple-glow);
  transition: all 0.22s !important;
}
.nav-cta:hover { transform: translateY(-1px) !important; box-shadow: 0 0 0 1px rgba(255,255,255,0.1) inset, 0 8px 24px var(--purple-glow) !important; }

/* Dropdown */
.nav-dropdown { position: relative; }
.nav-dropdown > a {
  display: flex; align-items: center; gap: 4px;
}
.nav-dropdown > a::after { content: '⌄'; font-size: 0.75rem; opacity: 0.5; line-height: 1; }
.dropdown-menu {
  position: absolute; top: calc(100% + 8px); left: 0;
  min-width: 228px; padding: 6px;
  background: rgba(13,15,30,0.97); backdrop-filter: blur(24px);
  border: 1px solid var(--border-m); border-radius: 14px;
  box-shadow: 0 24px 48px rgba(0,0,0,0.6);
  opacity: 0; visibility: hidden; transform: translateY(-6px);
  transition: all 0.2s cubic-bezier(0.4,0,0.2,1);
}
.nav-dropdown:hover .dropdown-menu { opacity: 1; visibility: visible; transform: translateY(0); }
.dropdown-menu a {
  display: block; padding: 10px 14px; border-radius: 9px;
  color: var(--txt-2); font-size: 0.875rem; text-decoration: none; transition: all 0.15s;
}
.dropdown-menu a:hover { color: var(--txt-1); background: rgba(124,58,237,0.18); }

.hamburger { display: none; flex-direction: column; gap: 5px; background: none; border: none; cursor: pointer; padding: 5px; }
.hamburger span { width: 20px; height: 1.5px; background: var(--txt-2); border-radius: 2px; display: block; transition: all 0.3s; }

/* ═══════════════════════════
   BUTTONS
═══════════════════════════ */
.btn-primary {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 12px 28px; border-radius: 50px;
  background: var(--purple); color: #fff;
  font-family: var(--f-body); font-weight: 600; font-size: 0.9rem;
  text-decoration: none; letter-spacing: 0.01em;
  box-shadow: 0 4px 20px var(--purple-glow); transition: all 0.22s;
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 8px 32px var(--purple-glow); filter: brightness(1.1); }

.btn-outline {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 12px 28px; border-radius: 50px;
  border: 1px solid var(--border-m); color: var(--txt-2);
  font-family: var(--f-body); font-weight: 500; font-size: 0.9rem;
  text-decoration: none; transition: all 0.22s; background: rgba(255,255,255,0.03);
}
.btn-outline:hover { border-color: var(--teal); color: var(--teal); transform: translateY(-2px); background: rgba(45,212,191,0.05); }

.btn-teal {
  display: inline-flex; align-items: center; gap: 8px;
  padding: 12px 28px; border-radius: 50px;
  background: var(--teal); color: var(--void);
  font-family: var(--f-body); font-weight: 700; font-size: 0.9rem;
  text-decoration: none; transition: all 0.22s;
  box-shadow: 0 4px 20px var(--teal-glow);
}
.btn-teal:hover { transform: translateY(-2px); box-shadow: 0 8px 32px var(--teal-glow); filter: brightness(1.08); }

/* ═══════════════════════════
   SECTION TAGS
═══════════════════════════ */
.tag {
  display: inline-flex; align-items: center; gap: 7px;
  padding: 4px 14px; border-radius: 50px;
  font-family: var(--f-mono); font-size: 0.68rem; font-weight: 400;
  letter-spacing: 0.1em; text-transform: uppercase;
  background: rgba(124,58,237,0.12); border: 1px solid rgba(124,58,237,0.28); color: var(--purple-soft);
}
.tag.teal { background: rgba(45,212,191,0.1); border-color: rgba(45,212,191,0.28); color: var(--teal-soft); }
.tag.amber { background: rgba(245,158,11,0.1); border-color: rgba(245,158,11,0.28); color: var(--amber-soft); }
.tag.dark { background: rgba(124,58,237,0.15); border-color: rgba(124,58,237,0.3); color: var(--purple-soft); }
/* legacy alias */
.section-tag { display: inline-flex; align-items: center; gap: 7px; padding: 4px 14px; border-radius: 50px; font-family: var(--f-mono); font-size: 0.68rem; font-weight: 400; letter-spacing: 0.1em; text-transform: uppercase; background: rgba(124,58,237,0.12); border: 1px solid rgba(124,58,237,0.28); color: var(--purple-soft); }

/* ═══════════════════════════
   LAYOUT
═══════════════════════════ */
.container { max-width: 1200px; margin: 0 auto; padding: 0 40px; }
.section-head { margin-bottom: 64px; }
.section-head.center { text-align: center; }
.section-head.center .section-sub { margin: 0 auto; }

.section-num {
  font-family: var(--f-mono); font-size: 0.7rem; color: var(--teal); letter-spacing: 0.12em;
  display: block; margin-bottom: 10px;
}
.section-title {
  font-family: var(--f-display); font-size: clamp(2rem, 4.5vw, 3.2rem);
  font-weight: 800; line-height: 1.1; letter-spacing: -0.02em;
  color: var(--lt-txt-1); margin: 10px 0 16px;
}
.section-title.light { color: var(--txt-1); }
.section-sub { color: var(--lt-txt-2); font-size: 0.97rem; line-height: 1.8; max-width: 500px; }
.section-sub.light { color: var(--txt-2); }

/* ═══════════════════════════
   STATS BAR
═══════════════════════════ */
.stats-bar { background: var(--deep); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.stats-grid { display: grid; grid-template-columns: repeat(4,1fr); max-width: 1200px; margin: 0 auto; }
.stat-item {
  padding: 32px 20px; text-align: center; border-right: 1px solid var(--border);
  transition: background 0.25s;
}
.stat-item:last-child { border-right: none; }
.stat-item:hover { background: rgba(45,212,191,0.03); }
.stat-num {
  font-family: var(--f-display); font-size: 2.4rem; font-weight: 900;
  color: var(--teal); letter-spacing: -0.03em; line-height: 1; display: block;
}
.stat-label {
  font-family: var(--f-mono); font-size: 0.64rem; color: var(--txt-3);
  letter-spacing: 0.1em; text-transform: uppercase; margin-top: 8px;
}

/* ═══════════════════════════
   PAGE HERO (sub-pages)
═══════════════════════════ */
.page-hero {
  min-height: 420px; display: flex; align-items: center; justify-content: center;
  text-align: center; padding: 140px 40px 100px;
  background: var(--void); position: relative; overflow: hidden;
}
.ph-orb-1 {
  position: absolute; width: 600px; height: 600px; border-radius: 50%;
  background: radial-gradient(circle, rgba(124,58,237,0.2) 0%, transparent 70%);
  top: -200px; left: -100px; pointer-events: none;
}
.ph-orb-2 {
  position: absolute; width: 400px; height: 400px; border-radius: 50%;
  background: radial-gradient(circle, rgba(45,212,191,0.15) 0%, transparent 70%);
  bottom: -100px; right: 0; pointer-events: none;
}
.ph-grid {
  position: absolute; inset: 0; opacity: 0.025;
  background-image: linear-gradient(rgba(255,255,255,1) 1px, transparent 1px),
                    linear-gradient(90deg, rgba(255,255,255,1) 1px, transparent 1px);
  background-size: 52px 52px;
}
.page-hero-content { position: relative; z-index: 2; max-width: 680px; }
.page-hero-content .section-tag, .page-hero-content .tag {
  background: rgba(45,212,191,0.1); color: var(--teal-soft);
  border-color: rgba(45,212,191,0.28); margin-bottom: 24px;
}
.page-hero-content h1 {
  font-family: var(--f-display); font-size: clamp(2.2rem, 5vw, 3.6rem);
  font-weight: 900; letter-spacing: -0.03em; color: #fff; line-height: 1.05; margin-bottom: 20px;
}
.page-hero-content p { color: var(--txt-2); font-size: 1rem; line-height: 1.75; max-width: 460px; margin: 0 auto; }

/* ═══════════════════════════
   FOOTER
═══════════════════════════ */
footer {
  background: var(--deep); border-top: 1px solid var(--border);
  padding: 80px 40px 0;
}
.footer-grid {
  display: grid; grid-template-columns: 2fr 1fr 1fr 1.3fr;
  gap: 56px; max-width: 1200px; margin: 0 auto 64px;
}
.footer-logo img { height: 38px; margin-bottom: 18px; }
.footer-desc { color: var(--txt-3); font-size: 0.84rem; line-height: 1.85; max-width: 230px; }
.footer-col h4 {
  font-family: var(--f-mono); font-size: 0.65rem; font-weight: 400;
  letter-spacing: 0.12em; text-transform: uppercase; color: var(--txt-3); margin-bottom: 20px;
}
.footer-col ul { list-style: none; display: flex; flex-direction: column; gap: 13px; }
.footer-col ul a { color: var(--txt-2); font-size: 0.875rem; text-decoration: none; transition: color 0.18s; }
.footer-col ul a:hover { color: var(--teal); }
.footer-contact-item { display: flex; align-items: center; gap: 10px; margin-bottom: 14px; }
.contact-icon { font-size: 0.9rem; opacity: 0.7; }
.footer-contact-item a { color: var(--txt-2); font-size: 0.875rem; text-decoration: none; transition: color 0.18s; }
.footer-contact-item a:hover { color: var(--teal); }
.footer-bottom {
  border-top: 1px solid var(--border); padding: 24px 0;
  display: flex; align-items: center; justify-content: space-between;
  max-width: 1200px; margin: 0 auto;
}
.footer-copy { font-family: var(--f-mono); font-size: 0.7rem; color: var(--txt-3); letter-spacing: 0.04em; }
.footer-socials { display: flex; gap: 8px; }
.social-btn {
  width: 36px; height: 36px; border-radius: 9px; border: 1px solid var(--border-m);
  background: rgba(255,255,255,0.03); color: var(--txt-3);
  display: flex; align-items: center; justify-content: center;
  font-size: 0.78rem; font-weight: 700; text-decoration: none; transition: all 0.2s;
}
.social-btn:hover { border-color: var(--teal); color: var(--teal); background: rgba(45,212,191,0.08); transform: translateY(-2px); }

.whatsapp-float {
  position: fixed; bottom: 28px; right: 28px; z-index: 9001;
  width: 56px; height: 56px; border-radius: 50%;
  background: #25D366; display: flex; align-items: center; justify-content: center;
  font-size: 1.5rem; text-decoration: none;
  box-shadow: 0 4px 20px rgba(37,211,102,0.45); transition: all 0.22s;
}
.whatsapp-float:hover { transform: scale(1.1) rotate(-5deg); box-shadow: 0 8px 32px rgba(37,211,102,0.6); }

/* ═══════════════════════════
   RESPONSIVE
═══════════════════════════ */
@media (max-width: 1024px) {
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 40px; }
  .stats-grid { grid-template-columns: repeat(2,1fr); }
  .stat-item:nth-child(2) { border-right: none; }
}
@media (max-width: 768px) {
  #navbar { padding: 0 20px; height: 60px; }
  .nav-links { display: none; }
  .hamburger { display: flex; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .footer-desc { max-width: 100%; }
  .container { padding: 0 20px; }
  .page-hero { padding: 120px 20px 80px; min-height: 340px; }
  footer { padding: 60px 20px 0; }
}
@media (max-width: 480px) {
  .stats-grid { grid-template-columns: repeat(2,1fr); }
  .stat-item:nth-child(2) { border-right: none; }
}