/* ═══════════════════════════════════════════
   GLOBAL.CSS — Variables, Reset, Navbar, Footer
═══════════════════════════════════════════ */

/* ── Google Fonts backup ── */
@import url('https://fonts.googleapis.com/css2?family=Nunito:wght@400;600;700;800;900&family=Bangers&display=swap');

/* ── Variables de color y tipografía ── */
:root {
  --color-purple:      #2563EB; 
  --color-purple-light:#3B82F6; 
  --color-purple-dark: #1D4ED8; 
  --color-pink:        #10B981; 
  --color-yellow:      #F59E0B;  
  --color-white:       #FFFFFF;
  --color-bg:          #F0F4FF; 
  --color-card:        #FFFFFF;
  --color-text:        #0F172A;
  --color-text-muted:  #475569;
  --color-border:      #CBD5E1;

  --font-display: 'Bangers', cursive;
  --font-body:    'Nunito', sans-serif;

  --radius-card: 20px;
  --shadow-card: 0 4px 24px rgba(124, 58, 237, 0.10);
  --shadow-hover: 0 8px 40px rgba(124, 58, 237, 0.22);

  --navbar-height: 70px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  background: var(--color-bg);
  color: var(--color-text);
  overflow-x: hidden;
}

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

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

ul {
  list-style: none;
}

/* ═══════════════════════════════════════════
   NAVBAR
═══════════════════════════════════════════ */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: var(--navbar-height);
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  padding: 0 2.5rem;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
}

.nav-links {
  display: flex;
  gap: 2rem;
  align-items: center;
  justify-content: center;
}

.nav-logo {
  font-family: var(--font-display);
  font-size: 1.8rem;
  letter-spacing: 2px;
  background: linear-gradient(135deg, var(--color-purple), var(--color-pink));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.nav-links {
  display: flex;
  gap: 2rem;
  align-items: center;
}

.nav-links a {
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 1px;
  color: var(--color-text-muted);
  transition: color 0.2s;
  position: relative;
  padding-bottom: 4px;
}

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

.nav-links a.active::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--color-purple);
  border-radius: 2px;
}

.btn-cta {
  background: linear-gradient(135deg, var(--color-purple), var(--color-purple-light));
  color: var(--color-white);
  font-family: var(--font-body);
  font-size: 0.75rem;
  font-weight: 800;
  letter-spacing: 1px;
  padding: 0.55rem 1.2rem;
  border-radius: 50px;
  white-space: nowrap;
  transition: transform 0.2s, box-shadow 0.2s;
  box-shadow: 0 4px 15px rgba(124, 58, 237, 0.35);
}

.btn-cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(124, 58, 237, 0.5);
}

/* Hamburger - solo mobile */
.nav-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 1.5rem;
  cursor: pointer;
  color: var(--color-purple);
}

/* ═══════════════════════════════════════════
   FOOTER
═══════════════════════════════════════════ */
.footer {
  background: var(--color-text);
  color: rgba(255,255,255,0.5);
  text-align: center;
  padding: 2rem;
  font-size: 0.82rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
}

.footer-logo {
  font-family: var(--font-display);
  font-size: 1.6rem;
  letter-spacing: 2px;
  background: linear-gradient(135deg, var(--color-purple-light), var(--color-pink));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ═══════════════════════════════════════════
   UTILIDADES COMPARTIDAS
═══════════════════════════════════════════ */
.section-title {
  font-family: var(--font-display);
  font-size: 2rem;
  letter-spacing: 3px;
  color: var(--color-purple);
  margin-bottom: 1.5rem;
}

/* Botón volver (usado en páginas interiores) */
.btn-back {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 1px;
  color: var(--color-purple);
  margin-bottom: 1.5rem;
  transition: gap 0.2s;
}

.btn-back:hover {
  gap: 0.7rem;
}

/* Tags de características */
.tag {
  display: inline-block;
  padding: 0.3rem 0.9rem;
  border-radius: 50px;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 1px;
  border: 1.5px solid currentColor;
}

/* ═══════════════════════════════════════════
   RESPONSIVE — NAVBAR
═══════════════════════════════════════════ */
@media (max-width: 900px) {
  .nav-links,
  .btn-cta {
    display: none;
  }

  .nav-toggle {
    display: block;
  }

  /* Mobile menu abierto */
  .nav-links.open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: var(--navbar-height);
    left: 0;
    right: 0;
    background: var(--color-white);
    padding: 1.5rem 2rem;
    border-bottom: 1px solid var(--color-border);
    gap: 1.2rem;
  }

  .nav-links.open + .btn-cta {
    display: none;
  }
}