/* ==========================================================================
   FAS — Financial Advisory Services
   Base styles — Montserrat + brand color system
   Works alongside Tailwind CDN. Variables mirror tailwind.config.js.
   ========================================================================== */

:root {
  /* Brand palette */
  --fas-navy: #021D48;
  --fas-navy-mid: #3D547F;
  --fas-accent: #698EDD;
  --fas-offwhite: #F8F9FB;
  --fas-white: #FFFFFF;

  /* Functional */
  --fas-text: #021D48;
  --fas-text-muted: #5b6b87;
  --fas-border: rgba(2, 29, 72, 0.08);
  --fas-shadow: 0 20px 40px -20px rgba(2, 29, 72, 0.25);

  /* Layout */
  --fas-navbar-h: 100px;
  --fas-radius: 14px;
  --fas-ease: cubic-bezier(0.22, 1, 0.36, 1);
}

/* --------------------------------------------------------------------------
   Reset / base
   -------------------------------------------------------------------------- */
*, *::before, *::after { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  font-family: 'Montserrat', ui-sans-serif, system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
  font-weight: 400;
  color: var(--fas-text);
  background-color: var(--fas-white);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

img, svg, video { max-width: 100%; height: auto; display: block; }

a { color: inherit; text-decoration: none; }

/* --------------------------------------------------------------------------
   Typography
   -------------------------------------------------------------------------- */
h1, h2, h3, h4, h5, h6 {
  font-family: 'Montserrat', sans-serif;
  font-weight: 700;
  color: var(--fas-navy);
  line-height: 1.15;
  letter-spacing: -0.01em;
  margin: 0 0 0.5em;
}

h1 { font-weight: 800; letter-spacing: -0.02em; }
h2 { font-weight: 700; }
h3, h4 { font-weight: 600; }

p { margin: 0 0 1em; font-weight: 400; }
.text-light { font-weight: 300; }
.text-muted { color: var(--fas-text-muted); }

/* --------------------------------------------------------------------------
   Selection & scrollbar
   -------------------------------------------------------------------------- */
::selection { background: var(--fas-accent); color: var(--fas-white); }

::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: var(--fas-offwhite); }
::-webkit-scrollbar-thumb {
  background: var(--fas-navy-mid);
  border-radius: 8px;
  border: 2px solid var(--fas-offwhite);
}
::-webkit-scrollbar-thumb:hover { background: var(--fas-navy); }

/* --------------------------------------------------------------------------
   Buttons
   -------------------------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.875rem 1.75rem;
  font-family: 'Montserrat', sans-serif;
  font-weight: 600;
  font-size: 0.9375rem;
  letter-spacing: 0.01em;
  border-radius: 999px;
  border: 2px solid transparent;
  cursor: pointer;
  transition: all 0.4s var(--fas-ease);
  white-space: nowrap;
  text-align: center;
}

.btn-primary {
  background: var(--fas-navy);
  color: var(--fas-white);
  border-color: var(--fas-navy);
}
.btn-primary:hover {
  background: var(--fas-accent);
  border-color: var(--fas-accent);
  transform: translateY(-2px);
  box-shadow: 0 12px 24px -10px rgba(105, 142, 221, 0.5);
}

.btn-accent {
  background: var(--fas-accent);
  color: var(--fas-white);
  border-color: var(--fas-accent);
}
.btn-accent:hover {
  background: var(--fas-navy);
  border-color: var(--fas-navy);
  transform: translateY(-2px);
}

.btn-outline {
  background: transparent;
  color: var(--fas-white);
  border-color: var(--fas-white);
}
.btn-outline:hover {
  background: var(--fas-white);
  color: var(--fas-navy);
  transform: translateY(-2px);
}

.btn-outline-navy {
  background: transparent;
  color: var(--fas-navy);
  border-color: var(--fas-navy);
}
.btn-outline-navy:hover {
  background: var(--fas-navy);
  color: var(--fas-white);
  transform: translateY(-2px);
}

/* --------------------------------------------------------------------------
   Navbar
   -------------------------------------------------------------------------- */
.fas-navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 50;
  height: var(--fas-navbar-h);
  display: flex;
  align-items: center;
  padding: 0 1.5rem;
  background: transparent;
  transition: background-color 0.4s var(--fas-ease),
              padding 0.4s var(--fas-ease),
              box-shadow 0.4s var(--fas-ease);
}
.fas-navbar.is-scrolled {
  background: var(--fas-navy);
  height: var(--fas-navbar-h);
  padding: 0 1.5rem;
  box-shadow: 0 10px 30px -15px rgba(2, 29, 72, 0.5);
}
.fas-navbar.is-solid {
  background: var(--fas-navy);
}

.fas-navbar a.nav-link {
  position: relative;
  color: var(--fas-white);
  font-weight: 500;
  font-size: 0.9375rem;
  padding: 0.5rem 0;
  transition: color 0.3s var(--fas-ease);
}
.fas-navbar a.nav-link::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: -2px;
  width: 0;
  height: 2px;
  background: var(--fas-accent);
  transition: width 0.4s var(--fas-ease);
}
.fas-navbar a.nav-link:hover::after,
.fas-navbar a.nav-link.is-active::after {
  width: 100%;
}
.fas-navbar a.nav-link.is-active { color: var(--fas-accent); }

/* Hamburger */
.nav-toggle {
  width: 32px;
  height: 32px;
  position: relative;
  background: transparent;
  border: 0;
  cursor: pointer;
  display: none;
}
.nav-toggle span {
  position: absolute;
  left: 4px;
  right: 4px;
  height: 2px;
  background: var(--fas-white);
  border-radius: 2px;
  transition: transform 0.35s var(--fas-ease), top 0.35s var(--fas-ease), opacity 0.2s ease;
}
.nav-toggle span:nth-child(1) { top: 9px; }
.nav-toggle span:nth-child(2) { top: 15px; }
.nav-toggle span:nth-child(3) { top: 21px; }
.nav-toggle.is-open span:nth-child(1) { top: 15px; transform: rotate(45deg); }
.nav-toggle.is-open span:nth-child(2) { opacity: 0; }
.nav-toggle.is-open span:nth-child(3) { top: 15px; transform: rotate(-45deg); }

@media (max-width: 1023px) {
  /* Navbar más alto en móvil → el logo (calc(var - 10px)) crece a 106px.
     El menú deslizante (.fas-nav-menu inset) hereda esta altura y sigue
     alineado justo debajo del navbar. */
  :root {
    --fas-navbar-h: 116px;
  }
  .nav-toggle { display: block; }
  .fas-nav-menu {
    position: fixed;
    inset: var(--fas-navbar-h) 0 0 0;
    background: var(--fas-navy);
    flex-direction: column;
    justify-content: flex-start;
    align-items: stretch;
    padding: 2rem 1.5rem;
    gap: 0;
    transform: translateX(100%);
    transition: transform 0.4s var(--fas-ease);
    overflow-y: auto;
  }
  .fas-nav-menu.is-open { transform: translateX(0); }
  .fas-nav-menu .nav-link {
    font-size: 1.125rem;
    padding: 1rem 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  }
  .fas-nav-menu .nav-cta { margin-top: 1.5rem; }
}

/* Prevent body scroll when mobile menu is open */
body.nav-open { overflow: hidden; }

/* Footer logo — larger on mobile for legibility (independent of navbar height) */
.fas-footer-logo {
  height: 150px;
}
@media (max-width: 1023px) {
  .fas-footer-logo {
    height: 190px;
  }
}

/* --------------------------------------------------------------------------
   Footer
   -------------------------------------------------------------------------- */
.fas-footer {
  background: var(--fas-navy);
  color: rgba(255, 255, 255, 0.75);
  padding: 4rem 0 1.5rem;
}
.fas-footer h4 {
  color: var(--fas-white);
  font-size: 0.875rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  margin-bottom: 1.25rem;
}
.fas-footer a {
  color: rgba(255, 255, 255, 0.75);
  transition: color 0.3s var(--fas-ease);
}
.fas-footer a:hover { color: var(--fas-accent); }
.fas-footer .footer-divider {
  border: 0;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  margin: 2.5rem 0 1.5rem;
}

/* --------------------------------------------------------------------------
   Sections / utility
   -------------------------------------------------------------------------- */
.section { padding: 6rem 0; }
.section-sm { padding: 4rem 0; }

@media (max-width: 768px) {
  .section { padding: 4rem 0; }
  .section-sm { padding: 3rem 0; }
}

.eyebrow {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  color: var(--fas-accent);
  margin-bottom: 1rem;
}

.divider-accent {
  width: 60px;
  height: 3px;
  background: var(--fas-accent);
  border: 0;
  margin: 0 0 1.5rem;
}
.divider-accent.is-center { margin-left: auto; margin-right: auto; }

/* --------------------------------------------------------------------------
   WhatsApp floating button
   -------------------------------------------------------------------------- */
.fas-whatsapp {
  position: fixed;
  right: 1.25rem;
  bottom: 1.25rem;
  width: 56px;
  height: 56px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: #25D366;
  color: #fff;
  border-radius: 50%;
  box-shadow: 0 12px 24px -8px rgba(37, 211, 102, 0.5);
  z-index: 40;
  transition: transform 0.3s var(--fas-ease);
}
.fas-whatsapp:hover { transform: scale(1.08); }

/* --------------------------------------------------------------------------
   AOS overrides — make defaults a touch snappier and friendlier
   -------------------------------------------------------------------------- */
[data-aos] { will-change: transform, opacity; }

/* --------------------------------------------------------------------------
   Accessibility — respect reduced motion
   -------------------------------------------------------------------------- */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
}

/* Focus visible — never hide it */
:focus-visible {
  outline: 2px solid var(--fas-accent);
  outline-offset: 3px;
  border-radius: 4px;
}