/* ============================================================
   BLUE BRIDGE — V1 AI-FIRST ENTERPRISE
   main.css — Design tokens, reset, layout, header, footer, hero
   Palette: #091FF9 / #000624 / #5999FF / #D6E6FE / #E7F0FF
   ============================================================ */

/* ---------- 1. DESIGN TOKENS ---------- */
:root {
  /* Brand palette (exact) */
  --bb-primary: #091FF9;
  --bb-secondary: #000624;
  --bb-accent: #5999FF;
  --bb-text: #D6E6FE;
  --bb-neutral: #E7F0FF;

  /* Derived tones */
  --bb-primary-600: #0719c7;
  --bb-primary-300: #5e6dff;
  --bb-secondary-800: #00041a;
  --bb-secondary-700: #050b33;
  --bb-secondary-600: #0a1240;
  --bb-ink: #ffffff;
  --bb-text-dim: rgba(214, 230, 254, 0.66);
  --bb-text-faint: rgba(214, 230, 254, 0.40);
  --bb-line: rgba(89, 153, 255, 0.18);
  --bb-line-strong: rgba(89, 153, 255, 0.34);
  --bb-glass: rgba(9, 22, 64, 0.55);
  --bb-glass-2: rgba(11, 26, 74, 0.72);

  /* Signature gradient */
  --bb-gradient: linear-gradient(135deg, #000624 0%, #091FF9 60%, #5999FF 100%);
  --bb-gradient-soft: linear-gradient(135deg, #00041a 0%, #050b33 55%, #0a1240 100%);
  --bb-gradient-text: linear-gradient(100deg, #E7F0FF 0%, #5999FF 60%, #091FF9 100%);

  /* Typography */
  --bb-font-sans: "Inter", "Segoe UI", system-ui, -apple-system, "Helvetica Neue", Arial, sans-serif;
  --bb-font-display: "Space Grotesk", "Inter", system-ui, sans-serif;

  /* Fluid type scale */
  --fs-xs: clamp(0.72rem, 0.7rem + 0.1vw, 0.78rem);
  --fs-sm: clamp(0.82rem, 0.8rem + 0.15vw, 0.9rem);
  --fs-base: clamp(0.95rem, 0.92rem + 0.2vw, 1.05rem);
  --fs-lg: clamp(1.1rem, 1rem + 0.4vw, 1.3rem);
  --fs-xl: clamp(1.35rem, 1.15rem + 0.9vw, 1.75rem);
  --fs-2xl: clamp(1.8rem, 1.4rem + 1.8vw, 2.6rem);
  --fs-3xl: clamp(2.3rem, 1.7rem + 3vw, 3.8rem);
  --fs-4xl: clamp(2.8rem, 1.8rem + 5vw, 5.2rem);

  /* Spacing */
  --sp-1: 0.25rem; --sp-2: 0.5rem; --sp-3: 0.75rem; --sp-4: 1rem;
  --sp-5: 1.5rem; --sp-6: 2rem; --sp-7: 3rem; --sp-8: 4rem;
  --sp-9: 6rem; --sp-10: 8rem;

  /* Radius */
  --r-sm: 8px; --r-md: 14px; --r-lg: 22px; --r-xl: 32px; --r-pill: 999px;

  /* Shadows / glows */
  --sh-sm: 0 2px 10px rgba(0, 6, 36, 0.35);
  --sh-md: 0 10px 40px rgba(0, 6, 36, 0.45);
  --sh-lg: 0 30px 80px rgba(0, 6, 36, 0.55);
  --glow: 0 0 0 1px rgba(89, 153, 255, 0.25), 0 12px 50px rgba(9, 31, 249, 0.35);

  /* Layout */
  --container: 1200px;
  --container-wide: 1380px;
  --header-h: 76px;

  /* Motion */
  --ease: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-in-out: cubic-bezier(0.65, 0, 0.35, 1);
  --dur: 0.5s;
}

/* ---------- 2. RESET ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
}
body {
  font-family: var(--bb-font-sans);
  font-size: var(--fs-base);
  line-height: 1.65;
  color: var(--bb-text);
  background: var(--bb-secondary);
  background-attachment: fixed;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}
img, svg, video, canvas { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; }
button, input, select, textarea { font: inherit; color: inherit; }
ul, ol { list-style: none; }
h1, h2, h3, h4 { font-family: var(--bb-font-display); line-height: 1.08; font-weight: 600; letter-spacing: -0.02em; color: var(--bb-ink); }
:focus-visible { outline: 3px solid var(--bb-accent); outline-offset: 3px; border-radius: 4px; }

/* Skip link (a11y) */
.skip-link {
  position: absolute; left: -999px; top: 0; z-index: 2000;
  background: var(--bb-primary); color: #fff; padding: 12px 20px; border-radius: 0 0 10px 0;
}
.skip-link:focus { left: 0; }

/* ---------- 3. LAYOUT HELPERS ---------- */
.container { width: 100%; max-width: var(--container); margin-inline: auto; padding-inline: clamp(1.1rem, 4vw, 2.4rem); }
.container-wide { max-width: var(--container-wide); }
.section { padding-block: clamp(3.5rem, 8vw, 7rem); position: relative; }
.section--tight { padding-block: clamp(2.5rem, 5vw, 4rem); }
.grid { display: grid; gap: var(--sp-5); }
.flex { display: flex; }
.center { display: grid; place-items: center; }
.eyebrow {
  display: inline-flex; align-items: center; gap: 0.5rem;
  font-family: var(--bb-font-sans); font-weight: 600; font-size: var(--fs-sm);
  letter-spacing: 0.14em; text-transform: uppercase; color: var(--bb-accent);
}
.eyebrow::before { content: ""; width: 26px; height: 2px; background: var(--bb-accent); display: inline-block; }
.section-head { max-width: 720px; margin-bottom: clamp(2rem, 5vw, 3.5rem); }
.section-head h2 { font-size: var(--fs-3xl); margin: 0.8rem 0 1rem; }
.section-head p { color: var(--bb-text-dim); font-size: var(--fs-lg); }
.text-gradient {
  background: var(--bb-gradient-text); -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent; color: transparent;
}
.muted { color: var(--bb-text-dim); }

/* Background ambience */
.bg-aura { position: relative; }
.bg-aura::before {
  content: ""; position: absolute; inset: 0; z-index: -1; pointer-events: none;
  background:
    radial-gradient(60% 50% at 15% 0%, rgba(9, 31, 249, 0.28), transparent 60%),
    radial-gradient(50% 60% at 100% 30%, rgba(89, 153, 255, 0.16), transparent 60%);
}

/* ---------- 4. HEADER / NAV ---------- */
.site-header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
  height: var(--header-h);
  display: flex; align-items: center;
  transition: background var(--dur) var(--ease), box-shadow var(--dur) var(--ease), backdrop-filter var(--dur);
}
.site-header__inner { display: flex; align-items: center; gap: var(--sp-6); width: 100%; }
.site-header.is-scrolled {
  background: rgba(0, 6, 36, 0.82);
  backdrop-filter: blur(18px) saturate(140%);
  -webkit-backdrop-filter: blur(18px) saturate(140%);
  box-shadow: 0 1px 0 var(--bb-line), 0 10px 40px rgba(0, 6, 36, 0.45);
}
.brand { display: inline-flex; align-items: center; gap: 0.6rem; flex-shrink: 0; }
.brand img { height: 30px; width: auto; filter: brightness(0) invert(1); transition: filter var(--dur); }
.brand:hover img { filter: none; }
.brand__tag { font-size: 0.62rem; letter-spacing: 0.18em; text-transform: uppercase; color: var(--bb-accent); font-weight: 700; }

.primary-nav { margin-left: auto; }
.primary-nav > ul { display: flex; align-items: center; gap: 0.3rem; }
.nav-item > a, .nav-item > button {
  display: inline-flex; align-items: center; gap: 0.35rem;
  padding: 0.6rem 0.9rem; border-radius: var(--r-pill);
  font-weight: 500; font-size: var(--fs-sm); color: var(--bb-text);
  background: transparent; border: 0; cursor: pointer; transition: color 0.25s, background 0.25s;
}
.nav-item > a:hover, .nav-item > button:hover, .nav-item.is-open > button { color: #fff; background: rgba(89, 153, 255, 0.12); }
.nav-item > button svg { transition: transform 0.3s var(--ease); }
.nav-item.is-open > button svg { transform: rotate(180deg); }

.header-actions { display: flex; align-items: center; gap: 0.6rem; flex-shrink: 0; }

/* Language selector */
.lang-select { position: relative; }
.lang-select__btn {
  display: inline-flex; align-items: center; gap: 0.4rem; padding: 0.5rem 0.7rem;
  border: 1px solid var(--bb-line); border-radius: var(--r-pill); background: transparent;
  cursor: pointer; font-size: var(--fs-sm); color: var(--bb-text); transition: border-color 0.25s;
}
.lang-select__btn:hover { border-color: var(--bb-line-strong); }
.lang-select__menu {
  position: absolute; right: 0; top: calc(100% + 8px); min-width: 160px;
  background: var(--bb-glass-2); border: 1px solid var(--bb-line); border-radius: var(--r-md);
  box-shadow: var(--sh-md); backdrop-filter: blur(14px); padding: 6px;
  opacity: 0; visibility: hidden; transform: translateY(-6px); transition: 0.25s var(--ease); z-index: 50;
}
.lang-select.is-open .lang-select__menu { opacity: 1; visibility: visible; transform: none; }
.lang-select__menu a { display: flex; align-items: center; gap: 0.6rem; padding: 0.55rem 0.7rem; border-radius: 8px; font-size: var(--fs-sm); }
.lang-select__menu a:hover, .lang-select__menu a[aria-current="true"] { background: rgba(89, 153, 255, 0.14); color: #fff; }

/* Mega menu */
.mega {
  position: absolute; left: 0; right: 0; top: calc(var(--header-h) - 6px);
  padding: 0 clamp(1.1rem, 4vw, 2.4rem);
  opacity: 0; visibility: hidden; transform: translateY(10px); pointer-events: none;
  transition: 0.32s var(--ease);
}
.nav-item.is-open .mega { opacity: 1; visibility: visible; transform: none; pointer-events: auto; }
.mega__panel {
  max-width: var(--container-wide); margin-inline: auto;
  background: var(--bb-glass-2); border: 1px solid var(--bb-line); border-radius: var(--r-lg);
  box-shadow: var(--sh-lg); backdrop-filter: blur(20px) saturate(140%);
  display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: var(--sp-5); padding: var(--sp-6);
}
.mega__feature {
  background: var(--bb-gradient-soft); border: 1px solid var(--bb-line); border-radius: var(--r-md);
  padding: var(--sp-5); display: flex; flex-direction: column; justify-content: space-between; gap: var(--sp-4);
}
.mega__feature h4 { font-size: var(--fs-lg); }
.mega__col h5 { font-size: var(--fs-xs); letter-spacing: 0.14em; text-transform: uppercase; color: var(--bb-text-faint); margin-bottom: 0.8rem; }
.mega__link { display: flex; gap: 0.8rem; padding: 0.6rem; border-radius: 10px; transition: background 0.2s; }
.mega__link:hover { background: rgba(89, 153, 255, 0.1); }
.mega__link .ico { width: 38px; height: 38px; flex-shrink: 0; display: grid; place-items: center; border-radius: 10px; background: rgba(9, 31, 249, 0.22); color: var(--bb-accent); }
.mega__link b { display: block; color: #fff; font-size: var(--fs-sm); }
.mega__link span { font-size: var(--fs-xs); color: var(--bb-text-dim); }

/* Mobile nav toggle */
.nav-toggle { display: none; width: 46px; height: 46px; border: 1px solid var(--bb-line); border-radius: 12px; background: transparent; cursor: pointer; align-items: center; justify-content: center; }
.nav-toggle span, .nav-toggle span::before, .nav-toggle span::after { content: ""; display: block; width: 20px; height: 2px; background: #fff; transition: 0.3s var(--ease); position: relative; }
.nav-toggle span::before { position: absolute; top: -6px; }
.nav-toggle span::after { position: absolute; top: 6px; }
.nav-open .nav-toggle span { background: transparent; }
.nav-open .nav-toggle span::before { transform: rotate(45deg); top: 0; }
.nav-open .nav-toggle span::after { transform: rotate(-45deg); top: 0; }

/* Mobile drawer */
.mobile-nav {
  position: fixed; inset: 0; z-index: 999; background: var(--bb-secondary-800);
  padding: calc(var(--header-h) + 1rem) clamp(1.1rem, 6vw, 2rem) 2rem; overflow-y: auto;
  transform: translateX(100%); transition: transform 0.4s var(--ease); visibility: hidden;
}
.nav-open .mobile-nav { transform: none; visibility: visible; }
.mobile-nav details { border-bottom: 1px solid var(--bb-line); }
.mobile-nav summary { display: flex; justify-content: space-between; align-items: center; padding: 1rem 0; font-family: var(--bb-font-display); font-size: var(--fs-lg); cursor: pointer; list-style: none; color: #fff; }
.mobile-nav summary::-webkit-details-marker { display: none; }
.mobile-nav details[open] summary .chev { transform: rotate(180deg); }
.mobile-nav .sub a { display: block; padding: 0.6rem 0; color: var(--bb-text-dim); }
.mobile-nav .mobile-cta { margin-top: 1.5rem; display: grid; gap: 0.8rem; }

/* ---------- 5. HERO ---------- */
.hero { position: relative; padding-top: calc(var(--header-h) + clamp(2.5rem, 7vw, 5rem)); padding-bottom: clamp(3rem, 8vw, 6rem); overflow: hidden; }
.hero__bg { position: absolute; inset: 0; z-index: -2; background: var(--bb-gradient); opacity: 0.92; }
.hero__bg::after { content: ""; position: absolute; inset: 0; background: radial-gradient(80% 80% at 70% 10%, transparent, rgba(0,6,36,0.85) 80%); }
.hero__grid-overlay { position: absolute; inset: 0; z-index: -1; opacity: 0.5;
  background-image: linear-gradient(rgba(89,153,255,0.06) 1px, transparent 1px), linear-gradient(90deg, rgba(89,153,255,0.06) 1px, transparent 1px);
  background-size: 54px 54px; mask-image: radial-gradient(70% 70% at 50% 30%, #000, transparent); }
.hero__inner { display: grid; grid-template-columns: 1.15fr 0.85fr; gap: clamp(2rem, 5vw, 4rem); align-items: center; }
.hero__badge { display: inline-flex; align-items: center; gap: 0.6rem; padding: 0.5rem 1rem; border: 1px solid var(--bb-line-strong); border-radius: var(--r-pill); background: rgba(0,6,36,0.4); font-size: var(--fs-sm); margin-bottom: 1.4rem; }
.hero__badge .dot { width: 8px; height: 8px; border-radius: 50%; background: #38f5a8; box-shadow: 0 0 0 4px rgba(56,245,168,0.2); }
.hero h1 { font-size: var(--fs-4xl); margin-bottom: 1.3rem; }
.hero__sub { font-size: var(--fs-lg); color: var(--bb-text); max-width: 38ch; margin-bottom: 2rem; }
.hero__cta { display: flex; flex-wrap: wrap; gap: 0.9rem; margin-bottom: 2.4rem; }
.hero__stats { display: flex; flex-wrap: wrap; gap: clamp(1.2rem, 4vw, 2.6rem); }
.hero__stat .num { font-family: var(--bb-font-display); font-size: var(--fs-2xl); font-weight: 700; color: #fff; }
.hero__stat .lbl { font-size: var(--fs-sm); color: var(--bb-text-dim); }

/* ---------- 6. FOOTER ---------- */
.site-footer { position: relative; background: var(--bb-secondary-800); border-top: 1px solid var(--bb-line); padding-top: clamp(3rem, 7vw, 5rem); }
.footer-grid { display: grid; grid-template-columns: 1.6fr repeat(4, 1fr); gap: var(--sp-6); padding-bottom: var(--sp-7); }
.footer-brand img { height: 30px; filter: brightness(0) invert(1); margin-bottom: 1rem; }
.footer-brand p { color: var(--bb-text-dim); font-size: var(--fs-sm); max-width: 34ch; margin-bottom: 1.4rem; }
.footer-col h5 { font-size: var(--fs-xs); letter-spacing: 0.14em; text-transform: uppercase; color: var(--bb-text-faint); margin-bottom: 1rem; }
.footer-col a { display: block; padding: 0.35rem 0; color: var(--bb-text-dim); font-size: var(--fs-sm); transition: color 0.2s, transform 0.2s; }
.footer-col a:hover { color: #fff; transform: translateX(3px); }
.footer-social { display: flex; gap: 0.6rem; }
.footer-social a { width: 40px; height: 40px; border: 1px solid var(--bb-line); border-radius: 10px; display: grid; place-items: center; color: var(--bb-text); transition: 0.25s; }
.footer-social a:hover { background: var(--bb-primary); border-color: var(--bb-primary); color: #fff; transform: translateY(-3px); }
.footer-bottom { border-top: 1px solid var(--bb-line); padding-block: 1.5rem; display: flex; flex-wrap: wrap; gap: 1rem; justify-content: space-between; align-items: center; font-size: var(--fs-sm); color: var(--bb-text-dim); }
.footer-bottom nav { display: flex; flex-wrap: wrap; gap: 1.2rem; }
.footer-badges { display: flex; gap: 0.6rem; flex-wrap: wrap; }
.footer-badges span { display: inline-flex; align-items: center; gap: 0.4rem; padding: 0.4rem 0.8rem; border: 1px solid var(--bb-line); border-radius: var(--r-pill); font-size: var(--fs-xs); }

/* ---------- 7. RESPONSIVE ---------- */
@media (max-width: 1024px) {
  .hero__inner { grid-template-columns: 1fr; }
  .hero__visual { order: -1; max-width: 520px; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 880px) {
  .primary-nav { display: none; }
  .nav-toggle { display: inline-flex; }
  .mega { display: none; }
  .header-actions { margin-left: auto; }          /* controles a la derecha: elimina el hueco */
  .header-actions .btn-desktop { display: none; } /* oculto en teléfonos pequeños */
}
/* Teléfonos grandes / tablets: hay espacio para el CTA de reserva */
@media (min-width: 600px) and (max-width: 880px) {
  .header-actions .btn-desktop { display: inline-flex; padding: 0.55rem 1rem; }
}
@media (max-width: 620px) {
  .footer-grid { grid-template-columns: 1fr; }
  .hero__stats { gap: 1.4rem; }
}

/* Utility */
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0; }
.no-scroll { overflow: hidden; }