/* ========================================
   NexoTech Consulting — Landing CSS
   Modern professional, dark accents
   ======================================== */

/* === Variables CSS === */
:root {
  /* Colors — Dark professional */
  --color-bg: #0a0a0f;
  --color-bg-alt: #12121a;
  --color-surface: #1a1a24;
  --color-border: #2a2a3a;
  
  /* Brand — Electric cyan */
  --color-primary: #00d4ff;
  --color-primary-dim: rgba(0, 212, 255, 0.15);
  --color-accent: #7c3aed;
  --color-accent-dim: rgba(124, 58, 237, 0.15);
  
  /* Text */
  --color-text: #f0f0f5;
  --color-text-muted: #8888a0;
  --color-text-dim: #555566;
  
  /* Spacing */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 5rem;
  
  /* Typography */
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
  
  /* Radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.75rem;
  --radius-lg: 1.25rem;
  
  /* Shadows */
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.4);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.5);
  --shadow-lg: 0 8px 32px rgba(0,0,0,0.6);
  --shadow-glow: 0 0 30px rgba(0, 212, 255, 0.2);
  
  /* Transitions */
  --transition-fast: 150ms ease-out;
  --transition-base: 250ms ease-out;
  --transition-slow: 400ms ease-out;
}

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

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-sans);
  background-color: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
  overflow-x: hidden;
}

/* === Scrollbar === */
::-webkit-scrollbar {
  width: 6px;
}
::-webkit-scrollbar-track {
  background: var(--color-bg);
}
::-webkit-scrollbar-thumb {
  background: var(--color-border);
  border-radius: 3px;
}
::-webkit-scrollbar-thumb:hover {
  background: var(--color-primary);
}

/* === Container === */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-lg);
}

/* === Section base === */
section {
  padding: var(--space-3xl) 0;
}

/* === Typography === */
h1, h2, h3, h4, h5, h6 {
  line-height: 1.15;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.section-label {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-primary);
  margin-bottom: var(--space-lg);
}

.section-label::before {
  content: '';
  display: block;
  width: 20px;
  height: 2px;
  background: var(--color-primary);
}

.section-title {
  font-size: clamp(1.75rem, 4vw, 2.75rem);
  margin-bottom: var(--space-xl);
}

.section-subtitle {
  font-size: 1.125rem;
  color: var(--color-text-muted);
  max-width: 600px;
  line-height: 1.7;
}

/* === Buttons === */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  padding: 0.75rem 1.75rem;
  border-radius: var(--radius-md);
  font-size: 0.9375rem;
  font-weight: 600;
  cursor: pointer;
  border: none;
  text-decoration: none;
  transition: transform var(--transition-fast), 
              box-shadow var(--transition-fast),
              background var(--transition-fast);
  position: relative;
  overflow: hidden;
}

.btn::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(255,255,255,0.1) 0%, transparent 50%);
  opacity: 0;
  transition: opacity var(--transition-fast);
}

.btn:hover::before {
  opacity: 1;
}

.btn-primary {
  background: var(--color-primary);
  color: #000;
  box-shadow: 0 0 20px rgba(0, 212, 255, 0.3);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 25px rgba(0, 212, 255, 0.5);
}

.btn-primary:active {
  transform: scale(0.97);
}

.btn-ghost {
  background: transparent;
  color: var(--color-text);
  border: 1px solid var(--color-border);
}

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

/* === Cards === */
.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  transition: transform var(--transition-base),
              border-color var(--transition-base),
              box-shadow var(--transition-base);
}

.card:hover {
  transform: translateY(-4px);
  border-color: var(--color-primary);
  box-shadow: var(--shadow-glow);
}

.card-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-lg);
  font-size: 1.5rem;
}

.card-icon.cyan {
  background: var(--color-primary-dim);
  color: var(--color-primary);
}

.card-icon.purple {
  background: var(--color-accent-dim);
  color: var(--color-accent);
}

.card-title {
  font-size: 1.25rem;
  margin-bottom: var(--space-sm);
}

.card-text {
  color: var(--color-text-muted);
  font-size: 0.9375rem;
  line-height: 1.7;
}

/* === Grid layouts === */
.grid-2 {
  display: grid;
  gap: var(--space-xl);
  grid-template-columns: 1fr;
}

.grid-3 {
  display: grid;
  gap: var(--space-xl);
  grid-template-columns: 1fr;
}

.grid-4 {
  display: grid;
  gap: var(--space-lg);
  grid-template-columns: 1fr;
}

@media (min-width: 640px) {
  .grid-2 { grid-template-columns: repeat(2, 1fr); }
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
}

@media (min-width: 1024px) {
  .grid-3 { grid-template-columns: repeat(3, 1fr); }
  .grid-4 { grid-template-columns: repeat(4, 1fr); }
}

/* === Scroll animations === */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 600ms ease-out, transform 600ms ease-out;
}

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

.reveal-delay-1 { transition-delay: 100ms; }
.reveal-delay-2 { transition-delay: 200ms; }
.reveal-delay-3 { transition-delay: 300ms; }
.reveal-delay-4 { transition-delay: 400ms; }

/* === Gradient text === */
.gradient-text {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-accent) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* === Divider === */
.divider {
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--color-border), transparent);
  margin: var(--space-3xl) 0;
}

/* === Badge === */
.badge {
  display: inline-block;
  padding: 0.25rem 0.75rem;
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 600;
  background: var(--color-primary-dim);
  color: var(--color-primary);
  border: 1px solid rgba(0, 212, 255, 0.2);
}

/* === Quote styling === */
.quote {
  position: relative;
  padding-left: var(--space-xl);
}

.quote::before {
  content: '"';
  position: absolute;
  left: 0;
  top: -0.5rem;
  font-size: 4rem;
  color: var(--color-primary);
  opacity: 0.4;
  line-height: 1;
  font-family: Georgia, serif;
}

.quote-text {
  font-size: 1.125rem;
  line-height: 1.8;
  font-style: italic;
  color: var(--color-text);
}

.quote-author {
  margin-top: var(--space-lg);
  font-size: 0.875rem;
  color: var(--color-text-muted);
}

.quote-author strong {
  color: var(--color-text);
  display: block;
  font-size: 1rem;
}

/* === Form elements === */
.form-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
}

.form-label {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-text-muted);
}

.form-input,
.form-textarea {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 0.75rem 1rem;
  color: var(--color-text);
  font-size: 0.9375rem;
  font-family: var(--font-sans);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-input:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(0, 212, 255, 0.1);
}

.form-textarea {
  resize: vertical;
  min-height: 120px;
}

.form-error {
  font-size: 0.8125rem;
  color: #ff6b6b;
  min-height: 1.2em;
}

/* === Utility === */
.text-center { text-align: center; }
.text-muted { color: var(--color-text-muted); }
.mt-lg { margin-top: var(--space-xl); }
.mt-2xl { margin-top: var(--space-2xl); }
/* ── Header ─────────────────────────────────── */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: 1rem 0;
  transition: background 250ms, box-shadow 250ms, backdrop-filter 250ms;
}

.site-header.scrolled {
  background: rgba(10, 10, 15, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: 0 1px 0 rgba(255,255,255,0.05);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  text-decoration: none;
  color: var(--color-text);
  font-weight: 700;
  font-size: 1.125rem;
  letter-spacing: -0.01em;
}

.logo-mark {
  color: var(--color-primary);
  font-size: 1.25rem;
}

.nav-links {
  display: none;
  align-items: center;
  gap: 2rem;
}

.nav-links a {
  text-decoration: none;
  color: var(--color-text-muted);
  font-size: 0.9375rem;
  font-weight: 500;
  transition: color 150ms;
}

.nav-links a:hover {
  color: var(--color-text);
}

.nav-links .btn-sm {
  padding: 0.5rem 1.25rem;
  font-size: 0.875rem;
}

.menu-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  color: var(--color-text);
  cursor: pointer;
  transition: border-color 150ms;
}

.menu-toggle:hover {
  border-color: var(--color-primary);
}

@media (min-width: 768px) {
  .nav-links { display: flex; }
  .menu-toggle { display: none; }
}

@media (max-width: 767px) {
  .nav-links {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--color-bg-alt);
    border-top: 1px solid var(--color-border);
    border-bottom: 1px solid var(--color-border);
    flex-direction: column;
    align-items: flex-start;
    padding: 1.5rem;
    gap: 1.25rem;
  }
  .nav-links.open { display: flex; }
  .nav-links a { font-size: 1rem; }
}

/* ── Hero ───────────────────────────────────── */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 8rem 0 4rem;
  overflow: hidden;
}

@media (max-width: 767px) {
  .hero {
    padding: 5rem 0 2rem;
    min-height: 100dvh;
    overflow: visible;
  }
  .hero-inner {
    gap: 1.5rem;
  }
  .hero-stats {
    gap: 1.25rem;
  }
  .stat-value {
    font-size: 1.25rem;
  }
  .stat-label {
    font-size: 0.75rem;
  }
  .hero-actions {
    margin-bottom: 1.5rem;
    gap: 0.75rem;
  }
  .hero-subtitle {
    max-width: 100%;
  }
}

@media (max-width: 479px) {
  .hero-stats {
    gap: 1rem;
  }
  .hero-stats .stat {
    min-width: 80px;
  }
}

.hero-bg-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(0, 212, 255, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 212, 255, 0.03) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse 80% 60% at 50% 0%, black 40%, transparent 100%);
  -webkit-mask-image: radial-gradient(ellipse 80% 60% at 50% 0%, black 40%, transparent 100%);
}

.hero-inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: 4rem;
  align-items: center;
  position: relative;
  z-index: 1;
}

@media (min-width: 1024px) {
  .hero-inner {
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
  }
}

.hero-content {
  max-width: 580px;
}

.hero-title {
  font-size: clamp(2.25rem, 6vw, 4rem);
  font-weight: 800;
  line-height: 1.05;
  margin: 1rem 0 1.5rem;
  letter-spacing: -0.03em;
}

.hero-subtitle {
  font-size: 1.125rem;
  color: var(--color-text-muted);
  line-height: 1.75;
  margin-bottom: 2rem;
  max-width: 480px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-bottom: 3rem;
}

.hero-stats {
  display: flex;
  gap: 2.5rem;
  flex-wrap: wrap;
}

.stat {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.stat-value {
  font-size: 1.75rem;
  font-weight: 800;
  color: var(--color-text);
  font-family: var(--font-mono);
  letter-spacing: -0.02em;
}

.stat-label {
  font-size: 0.8125rem;
  color: var(--color-text-muted);
}

/* Hero visual */
.hero-visual {
  display: flex;
  justify-content: center;
  position: relative;
}

.hero-orb {
  position: absolute;
  width: 320px;
  height: 320px;
  border-radius: 50%;
  background: radial-gradient(circle at 40% 40%, rgba(0, 212, 255, 0.25) 0%, rgba(124, 58, 237, 0.15) 50%, transparent 70%);
  filter: blur(40px);
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  animation: orb-pulse 4s ease-in-out infinite;
}

@keyframes orb-pulse {
  0%, 100% { transform: translate(-50%, -50%) scale(1); opacity: 0.8; }
  50% { transform: translate(-50%, -50%) scale(1.1); opacity: 1; }
}

.hero-code-block {
  position: relative;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg), var(--shadow-glow);
  max-width: 420px;
  width: 100%;
}

.code-dots {
  display: flex;
  gap: 6px;
  padding: 0.875rem 1.25rem;
  border-bottom: 1px solid var(--color-border);
  background: rgba(255,255,255,0.03);
}

.code-dots span {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--color-border);
}

.code-dots span:nth-child(1) { background: #ff5f57; }
.code-dots span:nth-child(2) { background: #febc2e; }
.code-dots span:nth-child(3) { background: #28c840; }

.hero-code-block pre {
  padding: 1.5rem;
  overflow-x: auto;
}

.hero-code-block code {
  font-family: var(--font-mono);
  font-size: 0.875rem;
  line-height: 1.8;
  color: var(--color-text-muted);
}

.code-keyword { color: #ff79c6; }
.code-fn { color: #50fa7b; }

/* Scroll hint */
.hero-scroll-hint {
  position: absolute;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.75rem;
  color: var(--color-text-dim);
  animation: bounce-down 2s ease-in-out infinite;
}

@keyframes bounce-down {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50% { transform: translateX(-50%) translateY(6px); }
}

/* ── Timeline ────────────────────────────────── */
.timeline {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
  max-width: 700px;
  margin: 0 auto;
}

@media (min-width: 768px) {
  .timeline {
    grid-template-columns: repeat(4, 1fr);
    max-width: 100%;
    gap: 1.5rem;
  }
}

.timeline-item {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.timeline-marker {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--color-primary);
  background: var(--color-primary-dim);
  border: 1px solid rgba(0, 212, 255, 0.2);
  border-radius: var(--radius-sm);
  padding: 0.25rem 0.625rem;
  width: fit-content;
}

.timeline-content h3 {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
}

.timeline-content p {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  line-height: 1.65;
}

/* ── Case cards ─────────────────────────────── */
.case-card {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.case-sector {
  font-size: 0.6875rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-primary);
}

.case-metrics {
  display: flex;
  gap: 1.5rem;
  margin-top: auto;
  padding-top: 1rem;
  border-top: 1px solid var(--color-border);
}

.case-metric {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.metric-value {
  font-family: var(--font-mono);
  font-size: 1.375rem;
  font-weight: 700;
  color: var(--color-primary);
}

.metric-label {
  font-size: 0.75rem;
  color: var(--color-text-muted);
}

/* ── Quote cards ─────────────────────────────── */
.quote-card {
  display: flex;
  align-items: flex-start;
}

/* ── Contacto ───────────────────────────────── */
.contacto-inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: 3rem;
  align-items: start;
}

@media (min-width: 1024px) {
  .contacto-inner {
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
  }
}

.contacto-content .section-title {
  margin-bottom: 1rem;
}

.contacto-trust {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-top: 1.5rem;
  font-size: 0.875rem;
  color: var(--color-text-muted);
}

.contact-form {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.form-privacy {
  font-size: 0.75rem;
  color: var(--color-text-dim);
  text-align: center;
}

/* ── Footer ─────────────────────────────────── */
.site-footer {
  background: var(--color-bg-alt);
  border-top: 1px solid var(--color-border);
  padding: 3rem 0 0;
}

.footer-inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2.5rem;
  padding-bottom: 2.5rem;
}

@media (min-width: 768px) {
  .footer-inner {
    grid-template-columns: 1fr auto;
  }
}

.footer-brand .logo {
  margin-bottom: 1rem;
}

.footer-brand p {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  line-height: 1.7;
}

.footer-links {
  display: flex;
  gap: 3rem;
  flex-wrap: wrap;
}

.footer-col {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.footer-col h4 {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-text-muted);
  margin-bottom: 0.25rem;
}

.footer-col a {
  text-decoration: none;
  color: var(--color-text-muted);
  font-size: 0.9rem;
  transition: color 150ms;
}

.footer-col a:hover {
  color: var(--color-primary);
}

.footer-bottom {
  border-top: 1px solid var(--color-border);
  padding: 1.25rem 0;
  font-size: 0.8125rem;
  color: var(--color-text-dim);
}

.footer-bottom a {
  color: var(--color-text-muted);
  text-decoration: none;
}

.footer-bottom a:hover {
  color: var(--color-primary);
}

/* ── Testimonials ────────────────────────────── */
.testimonios { padding: var(--space-3xl) 0; background: var(--color-bg-alt); }
.testimonial-card { display: flex; flex-direction: column; gap: var(--space-lg); }
.testimonial-quote { font-size: 1.05rem; line-height: 1.7; color: var(--color-text); font-style: italic; }
.testimonial-author { border-top: 1px solid var(--color-border); padding-top: var(--space-md); }
.author-name { font-weight: 600; font-size: 0.9rem; }
.author-role { font-size: 0.8rem; color: var(--color-text-muted); margin-top: 2px; }