/* AGH Sistemas - Main styles (production) */
:root {
  --primary: #2563eb;
  --primary-dark: #1d4ed8;
  --secondary: #64748b;
  --success: #059669;
  --dark: #0f172a;
  --light: #f8fafc;
  --white: #ffffff;
  --radius: 12px;
  --shadow: 0 4px 24px rgba(15, 23, 42, 0.08);
  --transition: 0.3s ease;
  --container: 1200px;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
  color: #334155;
  line-height: 1.6;
  background: var(--white);
}

.container { max-width: var(--container); margin: 0 auto; padding: 0 1.25rem; }

/* Header / Nav */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: var(--dark);
  transition: box-shadow var(--transition);
}

.site-header.is-scrolled { box-shadow: var(--shadow); }

.site-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 64px;
  gap: 1rem;
}

.nav-brand img { display: block; height: 40px; width: auto; object-fit: contain; }

.nav-menu {
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

.nav-menu a {
  color: rgba(255,255,255,0.9);
  text-decoration: none;
  font-weight: 500;
  font-size: 0.95rem;
  transition: color var(--transition);
}

.nav-menu a:hover { color: #fff; }

.nav-wa { color: #25d366 !important; }

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
}

.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: #fff;
  transition: var(--transition);
}

/* Hero */
.hero {
  position: relative;
  min-height: 500px;
  background-size: cover;
  background-position: center;
  display: flex;
  align-items: center;
  animation: fadeIn 0.8s ease;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.4);
}

.hero-content {
  position: relative;
  z-index: 1;
  text-align: center;
  color: #fff;
  padding: 3rem 1.25rem;
}

.hero-content h1 {
  font-size: clamp(1.75rem, 5vw, 3rem);
  font-weight: 700;
  margin-bottom: 1rem;
  text-shadow: 0 2px 12px rgba(0,0,0,0.35);
}

.hero-subtitle {
  font-size: clamp(1rem, 2.5vw, 1.25rem);
  opacity: 0.95;
  max-width: 640px;
  margin: 0 auto 2rem;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 1.5rem;
  border-radius: 8px;
  font-weight: 600;
  text-decoration: none;
  border: 2px solid transparent;
  cursor: pointer;
  transition: all var(--transition);
  font-size: 1rem;
}

.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-dark); transform: translateY(-2px); }

.btn-outline {
  background: transparent;
  border-color: var(--primary);
  color: var(--primary);
}

.btn-outline:hover { background: var(--primary); color: #fff; }

.btn-sm { padding: 0.5rem 1rem; font-size: 0.875rem; }

/* Sections */
.section { padding: 4rem 0; }
.section-title { font-size: clamp(1.5rem, 3vw, 2rem); text-align: center; color: var(--dark); margin-bottom: 0.75rem; }
.section-title-left { text-align: left; }
.section-lead { text-align: center; color: var(--secondary); max-width: 560px; margin: 0 auto 2.5rem; }

/* Why cards */
.section-why { background: var(--light); }

.cards-3 {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}

.feature-card {
  background: var(--white);
  padding: 2rem;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  transition: transform var(--transition), box-shadow var(--transition);
  text-align: center;
}

.feature-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 12px 32px rgba(15, 23, 42, 0.12);
}

.feature-icon {
  width: 56px;
  height: 56px;
  margin: 0 auto 1rem;
  background: rgba(37, 99, 235, 0.1);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary);
  font-size: 1.5rem;
}

.feature-card h3 { margin-bottom: 0.5rem; color: var(--dark); }

/* Stats */
.section-stats { background: var(--dark); color: #fff; }

.stats-grid {
  display: flex;
  justify-content: center;
  gap: 3rem;
  flex-wrap: wrap;
  text-align: center;
}

.stat-card .stat-number,
.stat-card .stat-suffix {
  font-size: 3rem;
  font-weight: 700;
  color: var(--primary);
  display: inline;
}

.stat-card .stat-suffix { font-size: 2rem; }
.stat-card p { margin-top: 0.5rem; opacity: 0.85; }

/* Services */
.section-services { background: var(--light); }

.services-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}

.service-card {
  position: relative;
  background: var(--white);
  border-radius: var(--radius);
  padding: 1.5rem;
  box-shadow: var(--shadow);
  transition: transform var(--transition);
}

.service-card:hover { transform: translateY(-4px); }

.badge-featured {
  position: absolute;
  top: 1rem;
  right: 1rem;
  background: var(--success);
  color: #fff;
  font-size: 0.7rem;
  font-weight: 700;
  padding: 0.25rem 0.625rem;
  border-radius: 20px;
  text-transform: uppercase;
}

.service-img img {
  width: 100%;
  height: 180px;
  object-fit: cover;
  border-radius: 8px;
  margin-bottom: 1rem;
}

.service-card h3 { color: var(--dark); margin-bottom: 0.5rem; }
.service-features { list-style: none; margin: 1rem 0; }
.service-features li { font-size: 0.875rem; padding: 0.2rem 0; }
.service-features i { color: var(--success); margin-right: 0.5rem; }

/* Integrations */
.integrations-row {
  display: flex;
  justify-content: center;
  gap: 3rem;
  flex-wrap: wrap;
  text-align: center;
}

.integration-item img { height: 72px; object-fit: contain; margin-bottom: 1rem; }

/* Security */
.section-security { background: var(--dark); color: #fff; }
.security-grid {
  display: flex;
  align-items: center;
  gap: 2.5rem;
  flex-wrap: wrap;
}
.security-img { width: 200px; max-width: 100%; }
.section-security .section-lead { text-align: left; margin-left: 0; color: rgba(255,255,255,0.8); }
.benefits-list { list-style: none; margin-top: 1.5rem; }
.benefits-list li { padding: 0.5rem 0; }
.benefits-list i { color: var(--primary); margin-right: 0.75rem; width: 20px; }

/* Project */
.section-project { background: var(--light); }
.project-grid {
  display: flex;
  align-items: center;
  gap: 2rem;
  flex-wrap: wrap;
}
.project-grid img {
  width: 300px;
  max-width: 100%;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

/* Footer */
.site-footer {
  background: var(--dark);
  color: rgba(255,255,255,0.85);
  padding-top: 3rem;
}

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

.footer-logo { height: 48px; margin-bottom: 1rem; }
.footer-col h4 { color: #fff; margin-bottom: 1rem; }
.footer-col a {
  display: block;
  color: rgba(255,255,255,0.75);
  text-decoration: none;
  margin-bottom: 0.5rem;
  font-size: 0.9rem;
}
.footer-col a:hover { color: #fff; }
.footer-col p { font-size: 0.9rem; margin-bottom: 0.5rem; }
.footer-col i { width: 18px; margin-right: 0.5rem; }

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding: 1.25rem;
  text-align: center;
  font-size: 0.85rem;
  opacity: 0.7;
}

.empty-msg { grid-column: 1 / -1; text-align: center; color: var(--secondary); }

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(12px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Breakpoints */
@media (min-width: 768px) {
  .cards-3 { grid-template-columns: repeat(3, 1fr); }
  .services-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: repeat(2, 1fr); }
}

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

@media (max-width: 767px) {
  .nav-toggle { display: flex; }
  .nav-menu {
    position: fixed;
    top: 64px;
    left: 0;
    right: 0;
    background: var(--dark);
    flex-direction: column;
    padding: 1.5rem;
    gap: 1rem;
    transform: translateY(-120%);
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
  }
  .nav-menu.is-open {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }
}

@media (prefers-color-scheme: dark) {
  :root { color-scheme: dark; }
}