/* ========== RESET Y VARIABLES ========== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --bg-primary: #0A1128;
  --bg-secondary: #111B33;
  --accent-primary: #2563EB;
  --accent-secondary: #7C3AED;
  --accent-tertiary: #06B6D4;
  --text-primary: #FFFFFF;
  --text-secondary: #94A3B8;
  --glass-bg: rgba(255, 255, 255, 0.04);
  --glass-border: rgba(255, 255, 255, 0.06);
  --radius: 16px;
  --font-title: 'Space Grotesk', sans-serif;
  --font-body: 'Inter', sans-serif;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  background: #0A1128; /* fondo de respaldo */
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
  position: relative;
  z-index: 1;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

section {
  padding: 80px 0;
  position: relative;
  z-index: 1;
  scroll-margin-top: 80px; /* Para la navbar fija */
  background: transparent !important; /* 🔥 CLAVE: transparente para ver partículas */
}

/* ========== PARTÍCULAS (fondo fijo) ========== */
#particles-canvas {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
  pointer-events: none;
}

/* ========== GLASS ========== */
.glass {
  background: var(--glass-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius);
}

/* ========== NAVBAR ========== */
.navbar {
  position: fixed;
  top: 16px;
  left: 50%;
  transform: translateX(-50%);
  width: 90%;
  max-width: 1200px;
  padding: 12px 32px;
  z-index: 1000;
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: rgba(10, 17, 40, 0.85);
  backdrop-filter: blur(16px);
  border: 1px solid rgba(255,255,255,0.06);
  border-radius: 60px;
}

.logo {
  font-family: var(--font-title);
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--text-primary);
  text-decoration: none;
}
.logo span { color: var(--accent-primary); }

.nav-links {
  display: flex;
  align-items: center;
  gap: 24px;
}
.nav-links a {
  color: var(--text-secondary);
  text-decoration: none;
  font-weight: 500;
  font-size: 0.9rem;
  transition: color 0.3s;
}
.nav-links a:hover { color: var(--accent-primary); }

.btn-nav {
  background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
  color: white !important;
  padding: 8px 24px;
  border-radius: 40px;
  font-weight: 600;
}

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
}
.hamburger span {
  width: 28px;
  height: 2px;
  background: white;
  transition: 0.3s;
}

@media (max-width: 768px) {
  .nav-links {
    display: none;
    flex-direction: column;
    position: absolute;
    top: 70px;
    left: 0;
    width: 100%;
    background: rgba(10,17,40,0.95);
    padding: 24px;
    gap: 16px;
    border-radius: 16px;
  }
  .nav-links.open { display: flex; }
  .hamburger { display: flex; }
}

/* ========== HERO ========== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  overflow: hidden;
  z-index: 1;
}
.hero-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: radial-gradient(circle at 30% 50%, rgba(37,99,235,0.08), rgba(10,17,40,0.9));
  z-index: 0;
}
.hero-content {
  position: relative;
  z-index: 2;
  max-width: 700px;
}
.hero-badge {
  display: inline-block;
  background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
  color: white;
  font-weight: 600;
  padding: 6px 20px;
  border-radius: 40px;
  font-size: 0.8rem;
  letter-spacing: 0.5px;
  margin-bottom: 20px;
}
.hero-title {
  font-family: var(--font-title);
  font-size: 4.5rem;
  font-weight: 900;
  line-height: 1.05;
  margin-bottom: 20px;
  background: linear-gradient(135deg, #FFFFFF, var(--accent-tertiary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}
.hero-subtitle {
  font-size: 1.2rem;
  color: var(--text-secondary);
  margin-bottom: 32px;
  max-width: 550px;
}
.hero-subtitle strong {
  color: var(--text-primary);
  font-weight: 600;
}
.btn-primary {
  display: inline-block;
  background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
  color: white;
  padding: 16px 40px;
  border-radius: 60px;
  font-weight: 600;
  text-decoration: none;
  transition: transform 0.3s, box-shadow 0.3s;
  border: none;
  cursor: pointer;
  box-shadow: 0 4px 24px rgba(37,99,235,0.3);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 40px rgba(37,99,235,0.4);
}
.hero-image {
  position: absolute;
  right: 5%;
  bottom: 10%;
  width: 400px;
  opacity: 0.2;
  z-index: 1;
  display: none;
}
@media (max-width: 768px) {
  .hero-title { font-size: 2.8rem; }
  .hero-subtitle { font-size: 1rem; }
}

/* ========== ABOUT ========== */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}
.about-text h2 {
  font-family: var(--font-title);
  font-size: 2.8rem;
  margin-bottom: 20px;
}
.about-text p {
  color: var(--text-secondary);
  font-size: 1.1rem;
  margin-bottom: 16px;
}
.about-features {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  margin-top: 20px;
}
.about-features span {
  background: var(--glass-bg);
  padding: 6px 16px;
  border-radius: 30px;
  font-size: 0.85rem;
  color: var(--text-secondary);
  border: 1px solid var(--glass-border);
}
.about-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.stat {
  text-align: center;
  padding: 24px;
  background: var(--glass-bg);
  border-radius: var(--radius);
  border: 1px solid var(--glass-border);
}
.stat-number {
  font-family: var(--font-title);
  font-size: 3rem;
  background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  display: block;
  font-weight: 900;
}
.stat-label {
  color: var(--text-secondary);
  font-size: 0.9rem;
}
@media (max-width: 768px) {
  .about-grid { grid-template-columns: 1fr; }
  .about-stats { grid-template-columns: 1fr; }
}

/* ========== SERVICES ========== */
.section-title {
  font-family: var(--font-title);
  font-size: 2.8rem;
  text-align: center;
  margin-bottom: 48px;
  background: linear-gradient(135deg, var(--text-primary), var(--accent-tertiary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}
.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 24px;
}
.service-card {
  padding: 32px 24px;
  text-align: center;
  transition: transform 0.3s, box-shadow 0.3s;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius);
}
.service-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 12px 48px rgba(37,99,235,0.12);
  border-color: var(--accent-primary);
}
.service-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto 16px;
}
.service-icon img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  filter: brightness(0) saturate(100%) invert(1);
}
.service-card h3 {
  font-size: 1.1rem;
  margin-bottom: 8px;
}
.service-card p {
  color: var(--text-secondary);
  font-size: 0.9rem;
}

/* ========== PROBLEM / SOLUTION ========== */
.ps-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
}
.problem-box, .solution-box {
  padding: 32px;
}
.problem-box h3, .solution-box h3 {
  font-size: 1.5rem;
  margin-bottom: 16px;
}
.problem-box ul, .solution-box ul {
  list-style: none;
}
.problem-box li, .solution-box li {
  padding: 8px 0;
  border-bottom: 1px solid rgba(255,255,255,0.04);
}
.problem-box li::before {
  content: "✗ ";
  color: #EF4444;
}
.solution-box li::before {
  content: "✓ ";
  color: var(--accent-tertiary);
}
@media (max-width: 768px) {
  .ps-grid { grid-template-columns: 1fr; }
}

/* ========== ARCHITECTURE ========== */
.arch-diagram {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  max-width: 700px;
  margin: 0 auto;
}
.arch-item {
  padding: 16px 24px;
  width: 100%;
  text-align: center;
  transition: all 0.3s;
  display: flex;
  align-items: center;
  gap: 16px;
  justify-content: center;
}
.arch-item:hover {
  border-color: var(--accent-primary);
  box-shadow: 0 0 40px rgba(37,99,235,0.06);
}
.arch-icon {
  font-size: 2rem;
}
.arch-item span {
  font-weight: 600;
  font-size: 1.1rem;
}
.arch-item small {
  color: var(--text-secondary);
  font-size: 0.8rem;
}
.arch-arrow {
  font-size: 1.8rem;
  color: var(--accent-primary);
  animation: bounce 1.8s infinite;
}
@keyframes bounce {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(6px); }
}

/* ========== METHOD ========== */
.method-timeline {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(170px, 1fr));
  gap: 24px;
}
.method-step {
  padding: 24px;
  text-align: center;
  transition: transform 0.3s;
}
.method-step:hover {
  transform: scale(1.02);
}
.step-number {
  display: inline-block;
  width: 48px;
  height: 48px;
  line-height: 48px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
  color: white;
  font-weight: 900;
  font-size: 1.2rem;
  margin-bottom: 12px;
}
.method-step h3 {
  font-size: 1.1rem;
  margin-bottom: 8px;
}
.method-step p {
  color: var(--text-secondary);
  font-size: 0.9rem;
}

/* ========== WHY ========== */
.why-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 24px;
}
.why-item {
  padding: 32px 24px;
  text-align: center;
  transition: transform 0.3s;
}
.why-item:hover {
  transform: translateY(-4px);
}
.why-icon {
  font-size: 2.8rem;
  display: block;
  margin-bottom: 12px;
}
.why-item h3 {
  font-size: 1.2rem;
  margin-bottom: 8px;
}
.why-item p {
  color: var(--text-secondary);
  font-size: 0.95rem;
}

/* ========== CONTACT ========== */
.contact-box {
  padding: 60px 40px;
  text-align: center;
  max-width: 700px;
  margin: 0 auto;
}
.contact-box h2 {
  font-family: var(--font-title);
  font-size: 2.2rem;
  margin-bottom: 16px;
}
.contact-box p {
  color: var(--text-secondary);
  font-size: 1.1rem;
  margin-bottom: 24px;
}
.contact-info {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 24px;
  align-items: center;
}
.contact-phone, .contact-location {
  color: var(--text-secondary);
}

/* ========== FOOTER ========== */
.footer {
  padding: 32px 0;
  border-top: 1px solid rgba(255,255,255,0.04);
  background: var(--bg-primary);
}
.footer .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
}
.footer p {
  color: var(--text-secondary);
  font-size: 0.9rem;
}
.footer-socials a {
  color: var(--text-secondary);
  text-decoration: none;
  margin-left: 24px;
  font-size: 0.9rem;
  transition: color 0.3s;
}
.footer-socials a:hover { color: var(--accent-primary); }

/* ========== REVEAL ========== */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ========== SELECTION ========== */
::selection {
  background: var(--accent-primary);
  color: white;
}