/* ============================================================================
   AVANTA INGENIERÍA — Theme premium (Apple-style + dark mode + Airbnb nav)
   ============================================================================ */

/* --- Variables base --- */
:root {
  /* Brand */
  --avanta-primary: #15294a;
  --avanta-accent: #3da5d9;
  --avanta-accent-luxe: #5fb8e7;

  /* Light mode (default) */
  --bg-page: #ffffff;
  --bg-elevated: #ffffff;
  --bg-subtle: #f5f7fa;
  --bg-overlay: rgba(255, 255, 255, 0.92);
  --bg-glass: rgba(255, 255, 255, 0.86);

  --text-strong: #0a0e16;
  --text-default: #1e293b;
  --text-muted: #475569;
  --text-faint: #64748b;
  --text-disabled: #94a3b8;

  --border-soft: rgba(15, 23, 42, 0.08);
  --border-default: rgba(15, 23, 42, 0.12);
  --border-strong: rgba(15, 23, 42, 0.18);

  --shadow-xs: 0 1px 2px rgba(15, 23, 42, 0.04);
  --shadow-sm: 0 2px 8px rgba(15, 23, 42, 0.06), 0 1px 2px rgba(15, 23, 42, 0.04);
  --shadow-md: 0 6px 16px rgba(15, 23, 42, 0.08), 0 2px 4px rgba(15, 23, 42, 0.04);
  --shadow-lg: 0 14px 32px rgba(15, 23, 42, 0.10), 0 4px 8px rgba(15, 23, 42, 0.04);
  --shadow-xl: 0 24px 64px rgba(15, 23, 42, 0.14), 0 8px 16px rgba(15, 23, 42, 0.06);

  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 22px;
  --radius-xl: 32px;
  --radius-pill: 999px;

  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-default: 280ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 520ms cubic-bezier(0.4, 0, 0.2, 1);

  /* Typography display */
  --font-body: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font-display: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --tracking-tight: -0.025em;
  --tracking-display: -0.04em;
}

/* --- Dark mode --- */
[data-theme="dark"] {
  --bg-page: #08090d;
  --bg-elevated: #131520;
  --bg-subtle: #1c1f2e;
  --bg-overlay: rgba(19, 21, 32, 0.92);
  --bg-glass: rgba(19, 21, 32, 0.86);

  --text-strong: #ffffff;
  --text-default: #e6e9f2;
  --text-muted: #a7b0c0;
  --text-faint: #7a8294;
  --text-disabled: #4a5263;

  --border-soft: rgba(255, 255, 255, 0.06);
  --border-default: rgba(255, 255, 255, 0.10);
  --border-strong: rgba(255, 255, 255, 0.16);

  --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.4);
  --shadow-sm: 0 4px 12px rgba(0, 0, 0, 0.45);
  --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.55);
  --shadow-lg: 0 18px 48px rgba(0, 0, 0, 0.65);
  --shadow-xl: 0 28px 80px rgba(0, 0, 0, 0.7);

  --avanta-accent: #5fb8e7;
  --avanta-accent-luxe: #7ec8ef;
}

/* --- Base --- */
html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }
body {
  background: var(--bg-page) !important;
  color: var(--text-default) !important;
  font-family: var(--font-body) !important;
  transition: background-color var(--transition-default), color var(--transition-default);
}

/* --- Typography premium --- */
h1, h2, h3, .section-title, .hero h1 {
  font-family: var(--font-display) !important;
  letter-spacing: var(--tracking-display) !important;
  color: var(--text-strong) !important;
}
h1, .hero h1 { font-weight: 800 !important; line-height: 1.05 !important; }
h2, .section-title { font-weight: 700 !important; line-height: 1.12 !important; }
h3 { font-weight: 600 !important; letter-spacing: var(--tracking-tight) !important; line-height: 1.2 !important; }

@media (min-width: 768px) {
  .hero h1 { font-size: clamp(2.75rem, 5.5vw, 5rem) !important; }
}

/* ============================================================================
   HEADER — Glassmorphism + nav links FIX (visible siempre)
   ============================================================================ */
header {
  background: var(--bg-glass) !important;
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  border-bottom: 1px solid var(--border-soft) !important;
  position: sticky;
  top: 0;
  z-index: 100;
}

nav {
  background: transparent !important;
}

/* Nav links visibles SIEMPRE (esto es lo que fallaba) */
header nav .nav-links,
header nav ul.nav-links {
  display: flex !important;
  list-style: none;
  margin: 0;
  padding: 0;
  gap: 4px;
  align-items: center;
}

header nav .nav-links li { list-style: none; }

header nav .nav-links a,
header nav .nav-links li a {
  color: var(--text-default) !important;
  font-size: 14px;
  font-weight: 500;
  padding: 8px 14px;
  border-radius: var(--radius-pill);
  text-decoration: none;
  transition: background var(--transition-fast), color var(--transition-fast);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

header nav .nav-links a:hover,
header nav .nav-links li a:hover {
  background: var(--bg-subtle) !important;
  color: var(--text-strong) !important;
}

/* CTA del nav (Contáctanos) */
header nav .nav-links .nav-cta,
header nav .nav-links a.nav-cta {
  background: var(--avanta-accent) !important;
  color: white !important;
  font-weight: 600;
  padding: 10px 20px !important;
  box-shadow: var(--shadow-sm);
}
header nav .nav-links .nav-cta:hover {
  background: var(--avanta-primary) !important;
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

/* En mobile el nav se hace hamburger — esto lo manejamos abajo */
@media (max-width: 900px) {
  header nav .nav-links {
    display: none !important;
  }
  header nav .nav-links.open {
    display: flex !important;
    flex-direction: column;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--bg-glass);
    padding: 16px;
    border-bottom: 1px solid var(--border-default);
    backdrop-filter: blur(20px);
  }
}

/* ============================================================================
   CATEGORY BAR (estilo Airbnb) — íconos + texto
   ============================================================================ */
.category-bar {
  background: var(--bg-page);
  border-bottom: 1px solid var(--border-soft);
  position: sticky;
  top: 72px; /* debajo del header */
  z-index: 90;
  padding: 12px 0;
}

.category-bar-inner {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  gap: 32px;
  overflow-x: auto;
  scrollbar-width: none;
  -webkit-overflow-scrolling: touch;
}
.category-bar-inner::-webkit-scrollbar { display: none; }

.category-item {
  flex: 0 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  padding: 8px 4px;
  color: var(--text-faint);
  text-decoration: none;
  border-bottom: 2px solid transparent;
  transition: color var(--transition-fast), border-color var(--transition-fast),
              transform var(--transition-fast);
  cursor: pointer;
  min-width: 72px;
}

.category-item:hover {
  color: var(--text-default);
  transform: translateY(-1px);
}
.category-item.active {
  color: var(--text-strong);
  border-bottom-color: var(--text-strong);
}

/* Emojis 3D nativos (Apple emoji en Mac/iOS — Airbnb-style) */
.category-emoji {
  font-size: 32px;
  line-height: 1;
  display: block;
  filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.12));
  transition: transform var(--transition-fast);
  /* Force usage of native color emoji font on all platforms */
  font-family: "Apple Color Emoji", "Segoe UI Emoji", "Noto Color Emoji",
               "Twemoji Mozilla", sans-serif;
}
.category-item:hover .category-emoji {
  transform: scale(1.12) rotate(-2deg);
}

.category-item-label {
  font-size: 12px;
  font-weight: 600;
  white-space: nowrap;
}

@media (max-width: 768px) {
  .category-bar { top: 64px; }
  .category-bar-inner { gap: 24px; padding: 0 16px; }
  .category-item { min-width: 72px; }
  .category-emoji { font-size: 28px; }
  .category-item-label { font-size: 11px; }
}

/* ============================================================================
   NAV ACORDEÓN — solo 3 tabs visibles + hamburger
   ============================================================================ */

/* Ocultar los li que no son visibles */
header nav .nav-links li.nav-li-hidden {
  display: none !important;
}

/* Hamburger button */
.nav-hamburger {
  display: inline-flex;
  flex-direction: column;
  justify-content: center;
  gap: 4px;
  width: 44px;
  height: 44px;
  padding: 10px 8px;
  background: var(--bg-subtle);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-pill);
  cursor: pointer;
  transition: background var(--transition-fast), border-color var(--transition-fast);
  margin-left: 8px;
}
.nav-hamburger:hover {
  background: var(--bg-elevated);
  border-color: var(--border-default);
  box-shadow: var(--shadow-sm);
}
.nav-hamburger .hamburger-line {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--text-default);
  border-radius: 2px;
  transition: transform var(--transition-default), opacity var(--transition-default);
  transform-origin: center;
}
.nav-hamburger.active .hamburger-line:nth-child(1) {
  transform: translateY(6px) rotate(45deg);
}
.nav-hamburger.active .hamburger-line:nth-child(2) {
  opacity: 0;
}
.nav-hamburger.active .hamburger-line:nth-child(3) {
  transform: translateY(-6px) rotate(-45deg);
}

/* Panel acordeón flotante */
.nav-panel {
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  width: 100%;
  max-width: 380px;
  background: var(--bg-elevated);
  border-left: 1px solid var(--border-soft);
  box-shadow: var(--shadow-xl);
  z-index: 300;
  transform: translateX(100%);
  transition: transform 320ms cubic-bezier(0.4, 0, 0.2, 1);
  overflow-y: auto;
  display: flex;
  flex-direction: column;
}
.nav-panel.open { transform: translateX(0); }

.nav-panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 24px;
  border-bottom: 1px solid var(--border-soft);
}
.nav-panel-header span {
  font-size: 18px;
  font-weight: 700;
  color: var(--text-strong);
  letter-spacing: var(--tracking-tight);
}
.nav-panel-close {
  width: 36px;
  height: 36px;
  background: var(--bg-subtle);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-pill);
  cursor: pointer;
  font-size: 16px;
  color: var(--text-default);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background var(--transition-fast), transform var(--transition-fast);
}
.nav-panel-close:hover { background: var(--border-default); transform: scale(1.05); }

.nav-panel-list {
  list-style: none;
  padding: 12px;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 2px;
}
.nav-panel-list li { list-style: none; }
.nav-panel-list a {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 18px;
  border-radius: var(--radius-md);
  color: var(--text-default) !important;
  font-size: 15px;
  font-weight: 500;
  text-decoration: none;
  transition: background var(--transition-fast), color var(--transition-fast);
}
.nav-panel-list a:hover {
  background: var(--bg-subtle);
  color: var(--text-strong) !important;
}

/* Overlay backdrop */
.nav-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.45);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  z-index: 250;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-default);
}
.nav-overlay.open {
  opacity: 1;
  pointer-events: auto;
}

/* OVERRIDE: en mobile el .nav-links debe seguir mostrando los li visibles */
@media (max-width: 900px) {
  header nav .nav-links {
    display: flex !important;
    gap: 4px;
  }
  header nav .nav-links li.nav-li-hidden {
    display: none !important;
  }
  /* Los 3 tabs visibles pueden quedar más compactos en mobile */
  header nav .nav-links li.nav-li-visible a {
    padding: 6px 10px;
    font-size: 13px;
  }
}

@media (max-width: 640px) {
  /* En móvil muy pequeño, esconder labels de tabs y dejar solo iconos/emojis */
  header nav .nav-links li.nav-li-visible a {
    font-size: 0;
    padding: 8px;
  }
  header nav .nav-links li.nav-li-visible a::before {
    font-size: 16px;
    content: attr(data-emoji);
  }
}

/* ============================================================================
   HERO con FOTO de fondo cinematográfica
   ============================================================================ */
.hero {
  position: relative;
  overflow: hidden;
  min-height: 80vh;
  display: flex;
  align-items: center;
  background-image:
    linear-gradient(135deg, rgba(10, 14, 22, 0.55) 0%, rgba(10, 14, 22, 0.65) 100%),
    url("/assets/hero/equipo-3.jpg");
  background-size: cover;
  background-position: center;
  background-attachment: scroll;
}

[data-theme="dark"] .hero {
  background-image:
    linear-gradient(135deg, rgba(0, 0, 0, 0.7) 0%, rgba(0, 0, 0, 0.8) 100%),
    url("/assets/hero/equipo-3.jpg");
}

/* Texto del hero visible sobre la foto */
.hero h1,
.hero h1 span,
.hero .hero-content h1 {
  color: white !important;
  text-shadow: 0 4px 24px rgba(0, 0, 0, 0.4);
}

.hero p,
.hero .hero-content p {
  color: rgba(255, 255, 255, 0.92) !important;
  text-shadow: 0 2px 12px rgba(0, 0, 0, 0.4);
  font-size: 1.125rem;
  max-width: 600px;
}

.hero-badge {
  background: rgba(255, 255, 255, 0.15) !important;
  border: 1px solid rgba(255, 255, 255, 0.25) !important;
  color: white !important;
  backdrop-filter: blur(12px);
  font-weight: 600 !important;
  letter-spacing: 0.08em !important;
  padding: 8px 20px !important;
  border-radius: var(--radius-pill);
  font-size: 12px;
}

/* --- Cards premium --- */
.service-card, .project-card, .stat-card {
  background: var(--bg-elevated) !important;
  border: 1px solid var(--border-soft) !important;
  border-radius: var(--radius-lg) !important;
  box-shadow: var(--shadow-sm) !important;
  transition: transform var(--transition-default), box-shadow var(--transition-default),
              border-color var(--transition-default);
}

.service-card:hover, .project-card:hover, .stat-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg) !important;
  border-color: var(--border-default) !important;
}

[data-theme="dark"] .service-card,
[data-theme="dark"] .project-card,
[data-theme="dark"] .stat-card {
  background: var(--bg-elevated) !important;
  color: var(--text-default) !important;
}

[data-theme="dark"] .service-card h3,
[data-theme="dark"] .project-card h3 {
  color: var(--text-strong) !important;
}

/* --- Buttons premium --- */
.btn, .btn-primary, .hero-cta a, .cta-button {
  font-weight: 600 !important;
  letter-spacing: -0.01em !important;
  border-radius: var(--radius-pill) !important;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast),
              background var(--transition-fast) !important;
  padding: 14px 28px !important;
  font-size: 15px !important;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.btn-primary, .hero-cta .btn-primary {
  background: var(--avanta-accent) !important;
  color: white !important;
  box-shadow: var(--shadow-md);
}

.btn-primary:hover, .hero-cta .btn-primary:hover {
  background: var(--avanta-primary) !important;
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.btn-outline {
  background: rgba(255, 255, 255, 0.1) !important;
  color: white !important;
  border: 1.5px solid rgba(255, 255, 255, 0.6) !important;
  backdrop-filter: blur(10px);
}
.btn-outline:hover {
  background: rgba(255, 255, 255, 0.2) !important;
  border-color: white !important;
  transform: translateY(-2px);
}

/* --- Sections --- */
section {
  padding: 80px 0 !important;
}
@media (min-width: 768px) {
  section { padding: 120px 0 !important; }
}

/* --- Scroll fade-up --- */
.fade-up {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 700ms cubic-bezier(0.4, 0, 0.2, 1),
              transform 700ms cubic-bezier(0.4, 0, 0.2, 1);
}
.fade-up.visible { opacity: 1; transform: translateY(0); }

/* --- Dark mode toggle button --- */
.theme-toggle {
  position: fixed;
  bottom: 24px;
  left: 24px;
  z-index: 200;
  width: 48px;
  height: 48px;
  border-radius: var(--radius-pill);
  background: var(--bg-glass);
  border: 1px solid var(--border-default);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  box-shadow: var(--shadow-lg);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  transition: transform var(--transition-default), box-shadow var(--transition-default);
}
.theme-toggle:hover { transform: scale(1.08); box-shadow: var(--shadow-xl); }
.theme-toggle:active { transform: scale(0.95); }

.theme-toggle .icon-sun { display: inline; }
.theme-toggle .icon-moon { display: none; }
[data-theme="dark"] .theme-toggle .icon-sun { display: none; }
[data-theme="dark"] .theme-toggle .icon-moon { display: inline; }

/* --- Footer --- */
footer {
  background: var(--bg-subtle) !important;
  color: var(--text-muted) !important;
  border-top: 1px solid var(--border-soft);
}
footer a { color: var(--text-default) !important; }

/* --- CTA section --- */
.cta-section {
  background: linear-gradient(135deg, var(--avanta-primary), #1f3866) !important;
  color: white !important;
}
.cta-section h2 { color: white !important; }
[data-theme="dark"] .cta-section {
  background: linear-gradient(135deg, #0a1628, #131520) !important;
}

/* --- Section "Renta" (azul) --- */
section#renta { color: white; }
section#renta .section-title { color: white !important; }
section#renta p { color: rgba(255,255,255,0.85) !important; }

/* --- Stats --- */
.stats { background: var(--bg-subtle) !important; }

/* --- Selección --- */
::selection { background: var(--avanta-accent); color: white; }

/* --- Images --- */
img:not(.no-rounding):not(.logo-img):not([class*="emoji"]) {
  border-radius: var(--radius-md);
}
.logo-img { border-radius: 0 !important; max-height: 56px; }

/* ============================================================================
   MOBILE OPTIMIZATIONS (viewport < 768px)
   ============================================================================ */

@media (max-width: 768px) {
  /* Hero más compacto y legible */
  .hero {
    min-height: 70vh;
    padding: 60px 16px 80px;
  }
  .hero h1 {
    font-size: clamp(2rem, 9vw, 3rem) !important;
    line-height: 1.08 !important;
  }
  .hero p {
    font-size: 0.95rem !important;
    line-height: 1.5;
  }
  .hero-badge {
    font-size: 10px !important;
    padding: 6px 14px !important;
  }
  .hero-cta {
    flex-direction: column;
    gap: 10px;
    width: 100%;
  }
  .hero-cta .btn {
    width: 100%;
    justify-content: center;
    text-align: center;
  }

  /* Logo header más pequeño */
  .logo-img { max-height: 40px; }

  /* Header padding compacto */
  header nav {
    padding: 10px 16px;
  }

  /* Sections más estrechas */
  section {
    padding: 60px 0 !important;
  }

  /* Cards: full width, gap menor */
  .service-card, .project-card, .stat-card {
    padding: 20px !important;
    border-radius: 18px !important;
  }

  /* Stats grid mobile: 2 columnas en vez de 4 */
  .stats .container,
  .stats > div {
    flex-wrap: wrap !important;
  }

  /* CTA section padding */
  .cta-section h2 {
    font-size: 1.5rem !important;
  }

  /* Footer compacto */
  footer {
    padding: 40px 16px 24px !important;
    font-size: 13px;
  }

  /* Theme toggle más cerca del borde */
  .theme-toggle {
    bottom: 16px;
    left: 16px;
    width: 44px;
    height: 44px;
    font-size: 18px;
  }
}

@media (max-width: 480px) {
  /* Hero ultra compacto */
  .hero h1 {
    font-size: clamp(1.75rem, 10vw, 2.5rem) !important;
  }
  .hero p {
    font-size: 0.875rem !important;
  }

  /* Category bar: items más pequeños, scroll más cómodo */
  .category-bar { top: 56px; padding: 8px 0; }
  .category-bar-inner {
    gap: 18px;
    padding: 0 12px;
  }
  .category-item {
    min-width: 60px;
    padding: 4px 2px;
  }
  .category-emoji { font-size: 24px; }
  .category-item-label { font-size: 10px; }

  /* Header: solo logo + hamburger en móvil muy pequeño */
  header nav .nav-links li.nav-li-visible a {
    font-size: 11px !important;
    padding: 6px 8px !important;
  }
  .nav-hamburger {
    width: 38px;
    height: 38px;
    padding: 8px 6px;
    margin-left: 4px;
  }
  .nav-hamburger .hamburger-line {
    width: 18px;
  }

  /* Buttons ligeramente más compactos */
  .btn, .btn-primary, .cta-button {
    padding: 12px 22px !important;
    font-size: 14px !important;
  }

  /* Section title menos espaciado */
  section h2,
  section .section-title {
    font-size: 1.75rem !important;
    margin-bottom: 12px !important;
  }

  /* Cards padding interno reducido */
  .service-card, .project-card {
    padding: 16px !important;
  }

  /* Nav panel ancho completo en muy pequeños */
  .nav-panel {
    max-width: 100%;
  }
}

/* Touch targets — mínimo 44x44px para accesibilidad mobile */
@media (max-width: 768px) {
  header nav a,
  .category-item,
  .btn,
  .nav-panel-list a {
    min-height: 44px;
    display: inline-flex;
    align-items: center;
  }
}

/* Sticky header offset para anchors (evita que el header tape el contenido) */
@media (max-width: 768px) {
  section[id], [id^="inicio"], [id^="nosotros"], [id^="servicios"], [id^="proyectos"] {
    scroll-margin-top: 64px;
  }
}