/* ============================================
   AT&T La Floresta — Design System
   attlafloresta.com
   ============================================ */

@import url('https://fonts.googleapis.com/css2?family=Barlow+Condensed:wght@600;700;800&family=Nunito:wght@400;500;600;700&display=swap');

/* --- Variables --- */
:root {
  --att-blue:    #00A8E0; /* AT&T Official Blue */
  --att-navy:    #00162E;
  --att-accent:  #FF6B35;
  --bg-light:    #F4F8FC;
  --text-dark:   #0D1B2A;
  --text-gray:   #5A6A7A;
  --white:       #FFFFFF;
  --shadow-sm:   0 2px 8px rgba(0,22,46,0.08);
  --shadow-md:   0 8px 32px rgba(0,22,46,0.12);
  --shadow-lg:   0 20px 60px rgba(0,22,46,0.18);
  --radius-sm:   6px;
  --radius-md:   12px;
  --radius-lg:   20px;
  --transition:  0.25s ease;
  --container:   1100px;
  --font-display: 'Barlow Condensed', sans-serif;
  --font-body:    'Nunito', sans-serif;
}

/* --- Reset --- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  font-family: var(--font-body);
  color: var(--text-dark);
  background: var(--white);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }

/* --- Container --- */
.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* --- Typography --- */
h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.02em;
}

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.875rem 2rem;
  border-radius: var(--radius-md);
  font-family: var(--font-body);
  font-weight: 700;
  font-size: 1rem;
  cursor: pointer;
  border: none;
  transition: all var(--transition);
  white-space: nowrap;
  text-decoration: none;
}
.btn-primary {
  background: var(--att-blue);
  color: var(--white);
  box-shadow: 0 4px 16px rgba(0,159,219,0.35);
}
.btn-primary:hover {
  background: #007ab8;
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0,159,219,0.45);
}
.btn-secondary {
  background: var(--white);
  color: var(--att-navy);
  border: 2px solid var(--att-navy);
}
.btn-secondary:hover {
  background: var(--att-navy);
  color: var(--white);
}
.btn-whatsapp {
  background: #25D366;
  color: var(--white);
  box-shadow: 0 4px 16px rgba(37,211,102,0.35);
}
.btn-whatsapp:hover {
  background: #1da851;
  transform: translateY(-2px);
}
.btn-lg { padding: 1.125rem 2.5rem; font-size: 1.125rem; }

/* --- Nav --- */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  padding: 1rem 0;
  transition: all var(--transition);
}
.nav.scrolled {
  background: var(--att-navy);
  padding: 0.75rem 0;
  box-shadow: var(--shadow-md);
}
.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.nav-logo {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--white);
  letter-spacing: -0.03em;
}
.nav-logo span { color: var(--att-blue); }

.nav-links {
  display: flex;
  align-items: center;
  gap: 2rem;
}
.nav-links a {
  color: rgba(255,255,255,0.85);
  font-weight: 600;
  font-size: 0.9rem;
  transition: color var(--transition);
}
.nav-links a:hover { color: var(--att-blue); }

/* --- Footer --- */
.footer {
  background: var(--att-navy);
  color: rgba(255,255,255,0.7);
  padding: 3rem 0 2rem;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 3rem;
  margin-bottom: 2.5rem;
}
.footer-brand p {
  margin-top: 0.75rem;
  font-size: 0.9rem;
  max-width: 280px;
}
.footer-col h4 {
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--att-blue);
  margin-bottom: 1rem;
}
.footer-col a {
  display: block;
  margin-bottom: 0.5rem;
  font-size: 0.9rem;
  transition: color var(--transition);
}
.footer-col a:hover { color: var(--white); }
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding-top: 1.5rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.8rem;
}

/* --- Cards --- */
.card {
  background: var(--white);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  padding: 2rem;
  transition: box-shadow var(--transition), transform var(--transition);
}
.card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-4px);
}

/* --- Forms --- */
.form-group { margin-bottom: 1.25rem; }
.form-group label {
  display: block;
  font-weight: 600;
  font-size: 0.875rem;
  margin-bottom: 0.5rem;
  color: var(--text-dark);
}
.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 0.875rem 1rem;
  border: 2px solid #DDE5EF;
  border-radius: var(--radius-md);
  font-family: var(--font-body);
  font-size: 1rem;
  color: var(--text-dark);
  transition: border-color var(--transition);
  background: var(--white);
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--att-blue);
  box-shadow: 0 0 0 3px rgba(0,159,219,0.15);
}
.form-group textarea { resize: vertical; min-height: 120px; }

/* --- Sección genérica --- */
.section { padding: 5rem 0; }
.section-sm { padding: 3rem 0; }
.section-header { text-align: center; margin-bottom: 3.5rem; }
.section-header h2 { font-size: clamp(2rem, 4vw, 3rem); color: var(--att-navy); }
.section-header p {
  margin-top: 0.75rem;
  color: var(--text-gray);
  font-size: 1.1rem;
  max-width: 560px;
  margin-left: auto;
  margin-right: auto;
}

/* --- Chip/Badge --- */
.chip {
  display: inline-block;
  padding: 0.25rem 0.75rem;
  border-radius: 99px;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}
.chip-blue   { background: rgba(0,159,219,0.12); color: var(--att-blue); }
.chip-orange { background: rgba(255,107,53,0.12); color: var(--att-accent); }

/* --- Form status --- */
.form-status {
  display: none;
  padding: 0.75rem 1rem;
  border-radius: var(--radius-sm);
  margin-bottom: 1rem;
  font-size: 0.9rem;
}
.form-status--success { background: #d4edda; color: #155724; border: 1px solid #c3e6cb; }
.form-status--error   { background: #f8d7da; color: #721c24; border: 1px solid #f5c6cb; }
.form-status--loading { background: #cce5ff; color: #004085; border: 1px solid #b8daff; }

/* --- Animations --- */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(24px); }
  to   { opacity: 1; transform: translateY(0); }
}
@keyframes kenBurns {
  0%   { transform: scale(1); }
  100% { transform: scale(1.06); }
}
@keyframes pulseWa {
  0%, 100% { box-shadow: 0 4px 16px rgba(37,211,102,0.35); }
  50%       { box-shadow: 0 4px 28px rgba(37,211,102,0.60), 0 0 0 6px rgba(37,211,102,0.12); }
}

.animate-fade-up { animation: fadeUp 0.6s ease forwards; }
.delay-1 { animation-delay: 0.10s; opacity: 0; }
.delay-2 { animation-delay: 0.20s; opacity: 0; }
.delay-3 { animation-delay: 0.32s; opacity: 0; }
.delay-4 { animation-delay: 0.46s; opacity: 0; }

/* Ken Burns hero */
.hero-ken-burns { animation: kenBurns 14s ease-out forwards; }

/* WhatsApp pulse */
.btn-whatsapp { animation: pulseWa 3s ease-in-out infinite; }
.btn-whatsapp:hover { animation: none; }

/* Scroll-reveal via IntersectionObserver */
[data-animate] {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity 0.65s ease, transform 0.65s ease;
}
[data-animate].in-view { opacity: 1; transform: none; }

/* Stagger grid children */
[data-stagger] > * {
  opacity: 0;
  transform: translateY(18px) scale(0.97);
  transition: opacity 0.5s ease, transform 0.5s ease;
}
[data-stagger].in-view > *:nth-child(1)  { opacity:1; transform:none; transition-delay:0.05s; }
[data-stagger].in-view > *:nth-child(2)  { opacity:1; transform:none; transition-delay:0.13s; }
[data-stagger].in-view > *:nth-child(3)  { opacity:1; transform:none; transition-delay:0.21s; }
[data-stagger].in-view > *:nth-child(4)  { opacity:1; transform:none; transition-delay:0.29s; }
[data-stagger].in-view > *:nth-child(5)  { opacity:1; transform:none; transition-delay:0.37s; }
[data-stagger].in-view > *:nth-child(6)  { opacity:1; transform:none; transition-delay:0.45s; }
[data-stagger].in-view > *:nth-child(7)  { opacity:1; transform:none; transition-delay:0.53s; }
[data-stagger].in-view > *:nth-child(8)  { opacity:1; transform:none; transition-delay:0.61s; }
[data-stagger].in-view > *:nth-child(9)  { opacity:1; transform:none; transition-delay:0.69s; }
[data-stagger].in-view > *:nth-child(10) { opacity:1; transform:none; transition-delay:0.77s; }

/* Section header accent line */
.section-header::after {
  content: '';
  display: block;
  width: 48px;
  height: 3px;
  background: var(--att-blue);
  border-radius: 2px;
  margin: 1rem auto 0;
}

/* Mobile nav toggle button */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 4px;
  background: none;
  border: none;
}
.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: white;
  border-radius: 2px;
  transition: all 0.28s ease;
}
.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); }

/* --- Logo AT&T --- */
.logo-img {
  height: 32px;
  width: auto;
  display: block;
}
/* Logo en fondos oscuros (nav, footer, hero) */
.logo-img.on-dark {
  filter: brightness(0) invert(1);
}
/* Logo en fondos claros: sin filtro — texto negro + globo azul #00A8E0 */

/* --- Responsive --- */
@media (max-width: 900px) {
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 768px) {
  .footer-grid { grid-template-columns: 1fr; gap: 2rem; }
  .btn-lg { padding: 1rem 1.75rem; font-size: 1rem; }
  .section { padding: 3.5rem 0; }
  .nav-toggle { display: flex; }
  .nav-links {
    display: none;
    position: fixed;
    top: 60px; left: 0; right: 0;
    background: var(--att-navy);
    flex-direction: column;
    padding: 1.5rem;
    gap: 1.25rem;
    box-shadow: var(--shadow-lg);
    z-index: 99;
  }
  .nav-links.open { display: flex; }
  .nav-links a { font-size: 1.05rem; }
}
@media (max-width: 600px) {
  .two-col { grid-template-columns: 1fr !important; gap: 2rem !important; }
}