/* =============================================
   NIMROD Automatización Industrial
   Estilos comunes — Mobile-First Responsive
   ============================================= */

@import url('https://fonts.googleapis.com/css2?family=Rajdhani:wght@400;500;600;700&family=Exo+2:wght@300;400;500;600;700&display=swap');

/* ---------- Variables CSS ---------- */
:root {
  --color-primary:       #CC0000;
  --color-primary-dark:  #990000;
  --color-primary-light: #FF2222;
  --color-dark:          #1A1A1A;
  --color-dark-2:        #252525;
  --color-dark-3:        #2E2E2E;
  --color-gray:          #3D3D3D;
  --color-gray-mid:      #6B6B6B;
  --color-gray-light:    #B0B0B0;
  --color-white:         #F5F5F5;
  --color-accent:        #FF4444;

  --font-display: 'Rajdhani', sans-serif;
  --font-body:    'Exo 2', sans-serif;

  --max-width:  1200px;
  --nav-height: 64px;

  --shadow-red:  0 0 24px rgba(204, 0, 0, 0.35);
  --shadow-card: 0 8px 32px rgba(0,0,0,0.45);
  --transition:  all 0.3s cubic-bezier(0.4, 0, 0.2, 1);

  /* Espaciado de secciones — móvil primero */
  --section-py: 3rem;
}

/* Escritorio: más espacio vertical */
@media (min-width: 1024px) {
  :root {
    --nav-height:  72px;
    --section-py:  6rem;
  }
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-body);
  background-color: var(--color-dark);
  color: var(--color-white);
  line-height: 1.6;
  overflow-x: hidden;
}

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

a { color: inherit; text-decoration: none; transition: var(--transition); }

/* ---------- Tipografía — Mobile-First ---------- */
h1, h2, h3, h4, h5 {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: 0.02em;
}

h1 { font-size: clamp(1.8rem, 7vw, 4rem); }
h2 { font-size: clamp(1.5rem, 5vw, 2.6rem); }
h3 { font-size: clamp(1.1rem, 3vw, 1.7rem); }

p { font-size: clamp(0.88rem, 2vw, 1.05rem); color: var(--color-gray-light); }

/* ---------- Contenedor principal — max 1200px centrado ---------- */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin-inline: auto;
  padding-inline: 1rem;          /* móvil */
}

@media (min-width: 481px) {
  .container { padding-inline: 1.25rem; }
}

@media (min-width: 641px) {
  .container { padding-inline: 1.5rem; }
}

@media (min-width: 1024px) {
  .container { padding-inline: 2rem; }
}

/* ---------- Navbar ---------- */
#navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  height: var(--nav-height);
  background: rgba(20, 20, 20, 0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(204,0,0,0.25);
  display: flex;
  align-items: center;
  transition: var(--transition);
}

#navbar.scrolled {
  background: rgba(15, 15, 15, 0.98);
  border-bottom-color: rgba(204,0,0,0.5);
  box-shadow: 0 4px 24px rgba(0,0,0,0.6);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  max-width: var(--max-width);
  margin-inline: auto;
  padding-inline: 1rem;
}

@media (min-width: 641px) {
  .nav-inner { padding-inline: 1.5rem; }
}

@media (min-width: 1024px) {
  .nav-inner { padding-inline: 2rem; }
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 0.65rem;
}

.nav-logo img {
  height: 38px;
  width: auto;
}

@media (min-width: 641px) {
  .nav-logo img { height: 44px; }
}

.nav-logo-text {
  display: flex;
  flex-direction: column;
  line-height: 1.1;
}

.nav-logo-text .brand {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-white);
  letter-spacing: 0.08em;
}

@media (min-width: 641px) {
  .nav-logo-text .brand { font-size: 1.4rem; }
}

.nav-logo-text .brand span { color: var(--color-primary); }

.nav-logo-text .tagline {
  font-size: 0.55rem;
  color: var(--color-gray-light);
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

@media (min-width: 641px) {
  .nav-logo-text .tagline { font-size: 0.6rem; letter-spacing: 0.18em; }
}

/* Ocultar tagline en celulares pequeños */
@media (max-width: 480px) {
  .nav-logo-text .tagline { display: none; }
}

/* Nav links — escritorio */
.nav-links {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  list-style: none;
}

.nav-links a {
  font-family: var(--font-display);
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 0.5rem 0.85rem;
  border-radius: 4px;
  color: var(--color-gray-light);
  position: relative;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: 0; left: 50%; right: 50%;
  height: 2px;
  background: var(--color-primary);
  transition: var(--transition);
}

.nav-links a:hover,
.nav-links a.active { color: var(--color-white); }

.nav-links a:hover::after,
.nav-links a.active::after {
  left: 0.85rem;
  right: 0.85rem;
}

.nav-cta {
  font-family: var(--font-display) !important;
  font-size: 0.82rem !important;
  font-weight: 700 !important;
  letter-spacing: 0.12em !important;
  text-transform: uppercase !important;
  padding: 0.55rem 1.2rem !important;
  background: var(--color-primary) !important;
  color: var(--color-white) !important;
  border-radius: 4px !important;
  border: 1px solid var(--color-primary) !important;
}

.nav-cta:hover {
  background: var(--color-primary-dark) !important;
  box-shadow: var(--shadow-red) !important;
  color: var(--color-white) !important;
}

.nav-cta::after { display: none !important; }

/* ---------- Hamburger ---------- */
#nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.4rem;
  z-index: 1100;
}

#nav-toggle span {
  display: block;
  width: 26px;
  height: 2px;
  background: var(--color-white);
  transition: var(--transition);
  transform-origin: center;
}

#nav-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
#nav-toggle.open span:nth-child(2) { opacity: 0; transform: scaleX(0); }
#nav-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ---------- Menú móvil — hasta 1023px ---------- */
@media (max-width: 1023px) {
  #nav-toggle { display: flex; }

  .nav-links {
    position: fixed;
    top: var(--nav-height);
    left: 0; right: 0;
    background: rgba(15,15,15,0.98);
    backdrop-filter: blur(16px);
    flex-direction: column;
    align-items: flex-start;
    padding: 1.5rem 1.5rem 2rem;
    gap: 0.5rem;
    border-bottom: 2px solid var(--color-primary);
    transform: translateY(-110%);
    opacity: 0;
    pointer-events: none;
    transition: transform 0.35s ease, opacity 0.35s ease;
  }

  .nav-links.open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: all;
  }

  .nav-links a { font-size: 1rem; padding: 0.65rem 0; width: 100%; }
  .nav-cta { margin-top: 0.5rem; display: inline-block !important; }
}

/* ---------- Botones ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.85rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 0.75rem 1.4rem;
  border-radius: 4px;
  border: none;
  cursor: pointer;
  transition: var(--transition);
  white-space: nowrap;
}

@media (min-width: 641px) {
  .btn { font-size: 0.9rem; padding: 0.8rem 1.8rem; letter-spacing: 0.12em; }
}

.btn-primary {
  background: var(--color-primary);
  color: var(--color-white);
  border: 1px solid var(--color-primary);
}

.btn-primary:hover {
  background: var(--color-primary-dark);
  box-shadow: var(--shadow-red);
  transform: translateY(-2px);
}

.btn-outline {
  background: transparent;
  color: var(--color-white);
  border: 1px solid rgba(255,255,255,0.4);
}

.btn-outline:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
  transform: translateY(-2px);
}

/* ---------- Encabezados de sección ---------- */
.section-header {
  text-align: center;
  margin-bottom: 2.5rem;
}

@media (min-width: 641px) {
  .section-header { margin-bottom: 3rem; }
}

@media (min-width: 1024px) {
  .section-header { margin-bottom: 3.5rem; }
}

.section-tag {
  display: inline-block;
  font-family: var(--font-display);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--color-primary);
  margin-bottom: 0.75rem;
  position: relative;
  padding: 0 1.5rem;
}

.section-tag::before,
.section-tag::after {
  content: '';
  position: absolute;
  top: 50%;
  width: 26px;
  height: 1px;
  background: var(--color-primary);
}
.section-tag::before { right: 100%; margin-right: -1.2rem; }
.section-tag::after  { left: 100%;  margin-left: -1.2rem; }

.section-divider {
  width: 60px;
  height: 3px;
  background: linear-gradient(90deg, var(--color-primary), transparent);
  margin: 1rem auto 0;
}

/* ---------- Grids responsivos ---------- */
/* Partimos de 1 columna (móvil), escalan con breakpoints */

.grid-2 {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.25rem;
}

.grid-3 {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.25rem;
}

.grid-4 {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.25rem;
}

/* Celulares medianos ≥ 481px */
@media (min-width: 481px) {
  .grid-2 { grid-template-columns: repeat(2, 1fr); }
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
}

/* Tablets ≥ 641px */
@media (min-width: 641px) {
  .grid-3 { grid-template-columns: repeat(2, 1fr); gap: 1.5rem; }
  .grid-4 { grid-template-columns: repeat(2, 1fr); gap: 1.5rem; }
}

/* Escritorio ≥ 1024px */
@media (min-width: 1024px) {
  .grid-3 { grid-template-columns: repeat(3, 1fr); gap: 1.75rem; }
  .grid-4 { grid-template-columns: repeat(4, 1fr); gap: 1.5rem; }
}

/* ---------- Cards ---------- */
.card {
  background: var(--color-dark-2);
  border: 1px solid rgba(255,255,255,0.06);
  border-radius: 8px;
  overflow: hidden;
  transition: var(--transition);
}

.card:hover {
  border-color: rgba(204,0,0,0.4);
  transform: translateY(-4px);
  box-shadow: var(--shadow-card);
}

/* ---------- Footer ---------- */
footer {
  background: #0D0D0D;
  border-top: 1px solid rgba(204,0,0,0.2);
  padding: 2.5rem 0 1.25rem;
}

@media (min-width: 641px) {
  footer { padding: 3rem 0 1.5rem; }
}

@media (min-width: 1024px) {
  footer { padding: 3.5rem 0 1.5rem; }
}

.footer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
  margin-bottom: 2rem;
}

@media (min-width: 481px) {
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 2rem; }
}

@media (min-width: 1024px) {
  .footer-grid {
    grid-template-columns: 2fr 1fr 1fr 1.5fr;
    gap: 2.5rem;
    margin-bottom: 2.5rem;
  }
}

.footer-heading {
  font-family: var(--font-display);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--color-primary);
  margin-bottom: 1.2rem;
}

.footer-links { list-style: none; }

.footer-links li { margin-bottom: 0.6rem; }

.footer-links a {
  font-size: 0.88rem;
  color: var(--color-gray-light);
  transition: var(--transition);
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.footer-links a:hover { color: var(--color-primary); padding-left: 0.3rem; }

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.06);
  padding-top: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  align-items: flex-start;
}

@media (min-width: 641px) {
  .footer-bottom {
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 0.75rem;
    padding-top: 1.5rem;
  }
}

.footer-bottom p { font-size: 0.78rem; color: var(--color-gray-mid); }

/* ---------- Utilidades ---------- */
.text-red    { color: var(--color-primary); }
.text-light  { color: var(--color-gray-light); }
.text-white  { color: var(--color-white); }

/* ---------- Scroll reveal ---------- */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.65s ease, transform 0.65s ease;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Reduce animación en preferencia de movimiento reducido */
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
}

/* ---------- Noise overlay ---------- */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)' opacity='0.035'/%3E%3C/svg%3E");
  pointer-events: none;
  z-index: 9999;
  opacity: 0.5;
}

/* ---------- Red line accent ---------- */
.red-line {
  display: inline-block;
  width: 4px;
  height: 1.1em;
  background: var(--color-primary);
  margin-right: 0.6rem;
  vertical-align: middle;
  flex-shrink: 0;
}

/* ---------- Glow circle background ---------- */
.glow-bg {
  position: absolute;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(204,0,0,0.15) 0%, transparent 70%);
  pointer-events: none;
}