/* ==========================================================================
   LexTribuna – Paleta formal de bajo contraste
   Basada en el azul institucional #1D3557
   ========================================================================== */
:root {
  /* Colores base */
  --primary-color: #212529;
  --secondary-color: #545B62;

  /* Acentos */
  --accent-color: #1D3557;
  --accent-light: #50709A;
  --gold-accent: #BFA35A;

  /* Neutrales */
  --background-light: #F6F7F9;
  --surface-white: #FFFFFF;
  --surface-elevated: #FAFBFC;
  --border-light: #E4E7EB;

  /* Métricas */
  --spacing-unit: 0.5rem;
  --border-radius: 0.5rem;
  --transition-duration: 0.25s;

  /* Breakpoints */
  --breakpoint-sm: 576px;
  --breakpoint-md: 768px;
  --breakpoint-lg: 992px;
  --breakpoint-xl: 1200px;
}

/* --------------------------------------------------------------------------
   Reset & base
--------------------------------------------------------------------------- */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: 4rem;
}

body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  font-family: 'Roboto', sans-serif;
  -webkit-font-smoothing: antialiased;
  background: var(--background-light);
  color: var(--primary-color);
  line-height: 1.6;
}

main {
  flex: 1;
}

/* --------------------------------------------------------------------------
   Navbar
--------------------------------------------------------------------------- */
.navbar {
  background: var(--accent-color) !important;
  transition: background var(--transition-duration), box-shadow var(--transition-duration);
}

.navbar.scrolled {
  background: var(--accent-light) !important;
  box-shadow: 0 2px 6px rgba(0,0,0,0.08);
}

.navbar-brand {
  font-family: 'Playfair Display', serif;
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--surface-white) !important;
}

.navbar-nav {
  gap: 1rem;
}

.nav-link {
  color: rgba(255,255,255,0.9) !important;
  padding: calc(var(--spacing-unit)*1) var(--spacing-unit);
  border-radius: var(--border-radius);
  transition: background var(--transition-duration);
}

.nav-link:hover,
.nav-link.active {
  background: rgba(255,255,255,0.15);
  color: #FFF !important;
}

/* --------------------------------------------------------------------------
   Dropdown
--------------------------------------------------------------------------- */
.dropdown-menu {
  background: var(--surface-white);
  border: none;
  border-radius: var(--border-radius);
  box-shadow: 0 4px 12px rgba(0,0,0,0.06);
  padding: var(--spacing-unit) 0;
}

.dropdown-item {
  color: var(--primary-color) !important;
  padding: 0.6rem 1rem;
}

.dropdown-item:hover,
.dropdown-item:focus {
  background: var(--accent-light);
  color: #FFF !important;
}

.dropdown-divider {
  margin: 0.4rem 0;
  border-top: 1px solid var(--border-light);
}

/* --------------------------------------------------------------------------
   Toggler
--------------------------------------------------------------------------- */
.navbar-toggler {
  border: none;
  padding: var(--spacing-unit);
}

.navbar-toggler-icon {
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 30 30' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath stroke='%23ffffff' stroke-width='2' stroke-linecap='round' d='M4 7h22M4 15h22M4 23h22'/%3E%3C/svg%3E");
}

/* --------------------------------------------------------------------------
   Buttons
--------------------------------------------------------------------------- */
.btn-primary {
  background: var(--accent-color);
  border-color: var(--accent-color);
  transition: background var(--transition-duration), border-color var(--transition-duration);
}

.btn-primary:hover,
.btn-primary:focus {
  background: var(--accent-light);
  border-color: var(--accent-light);
}

/* --------------------------------------------------------------------------
   Utilities
--------------------------------------------------------------------------- */
.text-accent {
  color: var(--accent-color) !important;
}

.bg-accent {
  background: var(--accent-color) !important;
}

/* --------------------------------------------------------------------------
   Responsive Navbar Menu (mobile)
--------------------------------------------------------------------------- */
@media (max-width: var(--breakpoint-md)) {
  .navbar-nav {
    background: var(--accent-color);
    margin-top: var(--spacing-unit);
    padding: var(--spacing-unit);
    border-radius: var(--border-radius);
  }
  .nav-link {
    margin-bottom: var(--spacing-unit);
  }
}

/* --------------------------------------------------------------------------
   Focus outlines for accessibility
--------------------------------------------------------------------------- */
.nav-link:focus-visible, .dropdown-item:focus-visible, .btn:focus-visible {
  outline: 3px solid var(--gold-accent);
  outline-offset: 2px;
}

/* WhatsApp Flotante */
.whatsapp-float {
    position: fixed;
    bottom: 20px;
    right: 20px;
    z-index: 999;
    background-color: #25d366;
    color: white;
    padding: 10px 14px;
    border-radius: 50px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
    text-decoration: none;
    display: flex;
    align-items: center;
    transition: background 0.3s ease;
}

.whatsapp-float:hover {
    background-color: #1ebe5d;
    color: white;
}

.whatsapp-float i {
    font-size: 20px;
}

.whatsapp-text {
    font-weight: 500;
    font-size: 15px;
    margin-left: 8px;
    display: none;
}

@media (min-width: 768px) {
    .whatsapp-text {
        display: inline;
    }
}