@import url('https://fonts.googleapis.com/css2?family=Bricolage+Grotesque:opsz,wght@12..96,400;12..96,500;12..96,700;12..96,800&family=DM+Sans:wght@300;400;500&display=swap');

/* ══════════════════════════════════════════
   TOKENS — dark (default) y light
══════════════════════════════════════════ */
:root {
  --blue:       #2F7EC7;
  --blue-h:     #5BAEE8;
  --red:        #C0272D;
  --red-h:      #E04048;

  /* DARK */
  --bg:         #07101F;
  --bg2:        #0E1A2E;
  --bg3:        #152340;
  --surface:    rgba(14,26,46,.85);
  --border:     rgba(47,126,199,.14);
  --border2:    rgba(255,255,255,.06);
  --text1:      #EEF3FF;
  --text2:      rgba(200,215,255,.62);
  --text3:      rgba(160,185,230,.38);

  --logo-bg:    transparent;
  --logo-mix:   normal;

  --font-h: 'Bricolage Grotesque', sans-serif;
  --font-b: 'DM Sans', sans-serif;

  --r-sm: 10px; --r-md: 16px; --r-lg: 24px; --r-xl: 32px;
  --sh-blue: 0 0 48px rgba(47,126,199,.22);
  --sh-red:  0 8px 32px rgba(192,39,45,.28);
  --sh-card: 0 8px 40px rgba(0,0,0,.45);
}

[data-theme="light"] {
  --bg:      #F4F7FC;
  --bg2:     #FFFFFF;
  --bg3:     #E8EFF8;
  --surface: rgba(255,255,255,.92);
  --border:  rgba(47,126,199,.18);
  --border2: rgba(0,0,0,.07);
  --text1:   #0C1A2E;
  --text2:   #3A5070;
  --text3:   #8299BB;

  --logo-bg:  #FFFFFF;
  --logo-mix: normal;

  --sh-blue: 0 0 48px rgba(47,126,199,.14);
  --sh-red:  0 8px 32px rgba(192,39,45,.2);
  --sh-card: 0 4px 24px rgba(0,0,0,.1);
}

/* Auto-detect OS preference when no manual toggle */
@media (prefers-color-scheme: light) {
  :root:not([data-theme]) {
    --bg: #F4F7FC; --bg2: #FFFFFF; --bg3: #E8EFF8;
    --surface: rgba(255,255,255,.92);
    --border: rgba(47,126,199,.18); --border2: rgba(0,0,0,.07);
    --text1: #0C1A2E; --text2: #3A5070; --text3: #8299BB;
    --logo-bg: #FFFFFF; --sh-card: 0 4px 24px rgba(0,0,0,.1);
  }
}

/* ══════════════════════════════════════════ RESET */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font-b);
  background: var(--bg);
  color: var(--text1);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
  transition: background .35s, color .35s;
}
::-webkit-scrollbar { width: 5px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: var(--blue); border-radius: 3px; }
h1,h2,h3,h4 { font-family: var(--font-h); line-height: 1.15; }
a { color: inherit; }

/* ══════════════════════════════════════════ BUTTONS */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  font-family: var(--font-h); font-weight: 700; font-size: .88rem;
  text-decoration: none; border: none; cursor: pointer;
  border-radius: var(--r-sm); padding: 13px 26px;
  transition: transform .25s, box-shadow .25s, background .2s, color .2s;
  letter-spacing: .2px; white-space: nowrap;
}
.btn:hover { transform: translateY(-2px); }
.btn-red  { background: var(--red); color: #fff; box-shadow: var(--sh-red); }
.btn-red:hover { background: var(--red-h); box-shadow: 0 12px 36px rgba(192,39,45,.38); }
.btn-outline {
  background: transparent; color: var(--text1);
  border: 1.5px solid var(--border);
  backdrop-filter: blur(10px);
}
.btn-outline:hover { border-color: var(--blue); color: var(--blue-h); background: rgba(47,126,199,.07); }

/* ══════════════════════════════════════════ SECTION HELPERS */
.section-inner { max-width: 1120px; margin: 0 auto; padding: 0 5%; }
.section-pad    { padding: 5.5rem 0; }
.section-pad-lg { padding: 7rem 0; }

.tag {
  display: inline-flex; align-items: center; gap: 7px;
  font-size: .68rem; font-weight: 700; letter-spacing: 2.5px;
  text-transform: uppercase; color: var(--blue-h);
  background: rgba(47,126,199,.1); border: 1px solid rgba(47,126,199,.2);
  padding: 5px 13px; border-radius: 20px; margin-bottom: .9rem;
}
.tag::before {
  content: ''; width: 5px; height: 5px; border-radius: 50%;
  background: var(--blue-h); animation: blink 2s ease-in-out infinite;
}
@keyframes blink { 0%,100%{opacity:1;transform:scale(1)} 50%{opacity:.3;transform:scale(.6)} }

.h-title {
  font-size: clamp(1.9rem, 3.8vw, 3rem); font-weight: 800;
  color: var(--text1); letter-spacing: -.5px; margin-bottom: .9rem;
}
.h-title em { font-style: normal; color: var(--blue-h); }
.h-sub {
  font-size: 1rem; color: var(--text2); max-width: 520px;
  margin-bottom: 3.5rem; line-height: 1.8;
}

/* ══════════════════════════════════════════ NAV */
nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
  height: 68px; display: flex; align-items: center;
  transition: background .4s, box-shadow .4s, border-color .4s;
}
nav.stuck {
  background: var(--surface);
  border-bottom: 1px solid var(--border2);
  backdrop-filter: blur(24px);
  box-shadow: var(--sh-card);
}
.nav-inner {
  max-width: 1120px; margin: 0 auto; padding: 0 5%;
  width: 100%; display: flex; align-items: center; justify-content: space-between;
}
.nav-logo { display: flex; align-items: center; gap: 2px; text-decoration: none; }
.nav-logo img {
  height: 44px; width: auto; object-fit: contain;
  /* Logo PNG con fondo negro → en light mode se necesita fondo para verlo */
  border-radius: 8px;
  padding: 3px;
}
[data-theme="light"] .nav-logo img,
:root:not([data-theme]) .nav-logo img { background: var(--bg2); padding: 4px 6px; }

.nav-links { display: flex; list-style: none; gap: .1rem; align-items: center; }
.nav-links a {
  text-decoration: none; font-size: .875rem; font-weight: 500;
  color: var(--text2); padding: 8px 14px; border-radius: 8px;
  transition: all .2s; font-family: var(--font-b);
}
.nav-links a:hover { color: var(--text1); background: var(--border2); }
.nav-links a.active { color: var(--blue-h); font-weight: 600; }
.nav-cta { background: var(--red) !important; color: #fff !important; padding: 9px 20px !important; border-radius: 8px !important; font-family: var(--font-h) !important; font-weight: 700 !important; box-shadow: var(--sh-red) !important; }
.nav-cta:hover { background: var(--red-h) !important; }

/* Theme toggle */
.theme-toggle {
  background: var(--border2); border: 1px solid var(--border);
  border-radius: 8px; width: 38px; height: 38px;
  display: flex; align-items: center; justify-content: center;
  cursor: pointer; font-size: 1rem; transition: background .2s;
  color: var(--text2); flex-shrink: 0;
}
.theme-toggle:hover { background: var(--border); color: var(--text1); }

.nav-right { display: flex; align-items: center; gap: .5rem; }

.nav-hamburger {
  display: none; flex-direction: column; gap: 5px;
  cursor: pointer; background: none; border: none; padding: 4px;
}
.nav-hamburger span { display: block; width: 22px; height: 2px; background: var(--text1); border-radius: 2px; transition: .3s; }

/* ══════════════════════════════════════════ FOOTER */
footer { background: var(--bg2); border-top: 1px solid var(--border2); padding: 5rem 5% 2.5rem; }
.footer-inner { max-width: 1120px; margin: 0 auto; }
.footer-top { display: grid; grid-template-columns: 1.5fr 1fr 1fr 1fr; gap: 3rem; padding-bottom: 3rem; border-bottom: 1px solid var(--border2); }
.footer-logo { height: 48px; width: auto; border-radius: 8px; margin-bottom: 1.2rem; }
[data-theme="light"] .footer-logo { background: var(--bg3); padding: 4px 8px; }
.footer-brand p { font-size: .875rem; color: var(--text2); line-height: 1.75; max-width: 260px; }
.footer-col h4 { font-family: var(--font-h); color: var(--text1); font-size: .75rem; font-weight: 700; margin-bottom: 1.1rem; letter-spacing: 2px; text-transform: uppercase; }
.footer-col ul { list-style: none; display: flex; flex-direction: column; gap: .55rem; }
.footer-col a { color: var(--text2); text-decoration: none; font-size: .875rem; transition: color .2s; }
.footer-col a:hover { color: var(--blue-h); }
.footer-bottom { display: flex; justify-content: space-between; align-items: center; padding-top: 2rem; font-size: .78rem; color: var(--text3); flex-wrap: wrap; gap: .5rem; }
.footer-bottom a { color: var(--text3); text-decoration: none; transition: color .2s; }
.footer-bottom a:hover { color: var(--blue-h); }

/* ══════════════════════════════════════════ PAGE HERO */
.page-hero {
  background: var(--bg); border-bottom: 1px solid var(--border2);
  padding: 9.5rem 5% 5rem; text-align: center; position: relative; overflow: hidden;
}
.page-hero::after {
  content: ''; position: absolute; top: 0; left: 0; right: 0; bottom: 0;
  background: radial-gradient(ellipse 60% 50% at 50% 0%, rgba(47,126,199,.07) 0%, transparent 100%);
  pointer-events: none;
}
.page-hero h1 { font-size: clamp(2rem,4.5vw,3.2rem); font-weight: 800; color: var(--text1); margin-bottom: .9rem; letter-spacing: -.5px; }
.page-hero p  { font-size: 1.05rem; color: var(--text2); max-width: 520px; margin: 0 auto; }
.breadcrumb { display: flex; justify-content: center; gap: 8px; font-size: .78rem; color: var(--text3); margin-bottom: 1.5rem; }
.breadcrumb a { color: var(--text3); text-decoration: none; transition: color .2s; }
.breadcrumb a:hover { color: var(--blue-h); }
.breadcrumb span { opacity: .35; }

/* ══════════════════════════════════════════ CARDS */
.card {
  background: var(--bg2); border: 1px solid var(--border2);
  border-radius: var(--r-lg);
  transition: border-color .3s, box-shadow .3s, transform .3s;
}
.card:hover { border-color: var(--border); box-shadow: var(--sh-blue); transform: translateY(-4px); }

/* ══════════════════════════════════════════ ANIMATIONS */
.reveal { opacity: 0; transform: translateY(28px); transition: opacity .6s ease, transform .6s ease; }
.reveal.up   { transform: translateY(28px); }
.reveal.left { transform: translateX(-28px); }
.reveal.right{ transform: translateX(28px); }
.reveal.on   { opacity: 1; transform: translate(0); }

/* ══════════════════════════════════════════ RESPONSIVE */
@media (max-width: 900px) { .footer-top { grid-template-columns: 1fr 1fr; } }
@media (max-width: 640px) {
  .nav-links { display: none; flex-direction: column; position: fixed; top: 68px; left: 0; right: 0; background: var(--surface); border-bottom: 1px solid var(--border2); padding: 1.5rem 5%; gap: .3rem; backdrop-filter: blur(24px); z-index: 999; }
  .nav-links.open { display: flex; }
  .nav-hamburger { display: flex; }
  .footer-top { grid-template-columns: 1fr; gap: 2rem; }
  .footer-bottom { flex-direction: column; text-align: center; }
}