/* =============================================
   BY STEP SOLUTIONS — Estilos principales
   ============================================= */

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

:root {
  --primary:      #6c63ff;
  --primary-dark: #4f46e5;
  --primary-glow: rgba(108, 99, 255, 0.25);
  --accent:       #00d4aa;
  --bg:           #0a0b0f;
  --bg-card:      #111318;
  --bg-card-2:    #161923;
  --border:       rgba(255, 255, 255, 0.07);
  --text:         #e8eaf0;
  --text-muted:   #8890a4;
  --radius:       14px;
  --radius-sm:    8px;
  --shadow:       0 4px 32px rgba(0, 0, 0, 0.4);
  --font:         'Inter', system-ui, sans-serif;
  --transition:   0.25s ease;
  --max-w:        1180px;
}

html { scroll-behavior: smooth; }

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

a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }

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

/* ---- CONTAINER ---- */
.container {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 24px;
}

/* ============================================
   NAVBAR
   ============================================ */
.navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  padding: 18px 0;
  transition: background var(--transition), backdrop-filter var(--transition), box-shadow var(--transition);
}

.navbar.scrolled {
  background: rgba(10, 11, 15, 0.88);
  backdrop-filter: blur(16px);
  box-shadow: 0 1px 0 var(--border);
  padding: 12px 0;
}

.nav-container {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
}

.nav-logo {
  font-size: 1.1rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  white-space: nowrap;
}

.logo-bracket {
  color: var(--primary);
}

.nav-links {
  display: flex;
  list-style: none;
  gap: 36px;
}

.nav-links a {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-muted);
  transition: color var(--transition);
}

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

/* Hamburger */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: transform var(--transition), opacity var(--transition);
}

.hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity: 0; }
.hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ============================================
   HERO
   ============================================ */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  gap: 64px;
  padding: 120px 24px 80px;
  max-width: var(--max-w);
  margin: 0 auto;
  position: relative;
}

.hero-bg {
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background:
    radial-gradient(ellipse 60% 50% at 20% 40%, rgba(108,99,255,0.12) 0%, transparent 70%),
    radial-gradient(ellipse 40% 40% at 80% 70%, rgba(0,212,170,0.08) 0%, transparent 60%);
  pointer-events: none;
  z-index: -1;
}

.hero-content {
  flex: 1;
  min-width: 0;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(108,99,255,0.12);
  border: 1px solid rgba(108,99,255,0.3);
  color: var(--primary);
  font-size: 0.8rem;
  font-weight: 600;
  padding: 6px 14px;
  border-radius: 100px;
  margin-bottom: 24px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.hero h1 {
  font-size: clamp(2.2rem, 5vw, 3.8rem);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.03em;
  margin-bottom: 20px;
}

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

.hero-subtitle {
  font-size: 1.05rem;
  color: var(--text-muted);
  max-width: 520px;
  margin-bottom: 36px;
  line-height: 1.7;
}

.hero-subtitle strong { color: var(--text); font-weight: 600; }

.hero-actions {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}

/* Code card */
.hero-visual {
  flex: 0 0 auto;
  width: min(440px, 100%);
}

.code-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow), 0 0 0 1px rgba(108,99,255,0.1);
}

.code-dots {
  display: flex;
  gap: 7px;
  padding: 14px 16px 10px;
  border-bottom: 1px solid var(--border);
}

.dot {
  width: 12px; height: 12px;
  border-radius: 50%;
}
.dot.red    { background: #ff5f57; }
.dot.yellow { background: #febc2e; }
.dot.green  { background: #28c840; }

.code-block {
  font-family: 'Fira Code', 'Cascadia Code', 'Courier New', monospace;
  font-size: 0.82rem;
  line-height: 1.75;
  padding: 20px 22px;
  white-space: pre-wrap;
}

.c-blue   { color: #82aaff; }
.c-green  { color: #c3e88d; }
.c-yellow { color: #ffcb6b; }
.c-orange { color: #f78c6c; }
.c-red    { color: #f07178; }
.c-white  { color: #eeffff; }

/* ============================================
   BUTTONS
   ============================================ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-size: 0.9rem;
  font-weight: 600;
  padding: 12px 26px;
  border-radius: var(--radius-sm);
  border: none;
  cursor: pointer;
  transition: all var(--transition);
  letter-spacing: 0.01em;
  white-space: nowrap;
}

.btn-primary {
  background: var(--primary);
  color: #fff;
  box-shadow: 0 4px 20px var(--primary-glow);
}

.btn-primary:hover {
  background: var(--primary-dark);
  box-shadow: 0 6px 28px rgba(108,99,255,0.4);
  transform: translateY(-1px);
}

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

.btn-outline:hover {
  border-color: var(--primary);
  color: var(--primary);
  transform: translateY(-1px);
}

.btn-full { width: 100%; }

/* ============================================
   SECTION HEADERS
   ============================================ */
.section-header {
  text-align: center;
  margin-bottom: 56px;
}

.section-tag {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--primary);
  margin-bottom: 12px;
}

.section-header h2 {
  font-size: clamp(1.7rem, 3.5vw, 2.6rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 12px;
}

.section-header p {
  color: var(--text-muted);
  font-size: 1rem;
  max-width: 480px;
  margin: 0 auto;
}

/* ============================================
   SERVICES
   ============================================ */
.services {
  padding: 100px 0;
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 20px;
}

.service-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px 28px;
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}

.service-card::before {
  content: '';
  position: absolute;
  inset: 0;
  opacity: 0;
  transition: opacity var(--transition);
  border-radius: inherit;
}

.service-card:hover {
  border-color: rgba(108,99,255,0.3);
  transform: translateY(-4px);
  box-shadow: 0 12px 40px rgba(0,0,0,0.3), 0 0 0 1px rgba(108,99,255,0.15);
}

.service-icon {
  width: 52px; height: 52px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
}

.service-icon svg { width: 26px; height: 26px; }

.icon-web    { background: rgba(108,99,255,0.15); color: #a5b4fc; }
.icon-mobile { background: rgba(0,212,170,0.12);  color: var(--accent); }
.icon-ai     { background: rgba(251,191,36,0.12);  color: #fbbf24; }
.icon-auto   { background: rgba(244,63,94,0.12);   color: #fb7185; }

.service-card h3 {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 10px;
}

.service-card p {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.65;
}

/* ============================================
   PRODUCTS
   ============================================ */
.products {
  padding: 100px 0;
  background: var(--bg-card-2);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.products-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 20px;
  margin-bottom: 56px;
}

.product-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px 28px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  position: relative;
  transition: all var(--transition);
  text-decoration: none;
  color: var(--text);
}

.product-card:hover {
  border-color: rgba(108,99,255,0.35);
  transform: translateY(-4px);
  box-shadow: 0 12px 40px rgba(0,0,0,0.35);
}

.product-card.coming-soon {
  opacity: 0.75;
  border-style: dashed;
}

.product-badge {
  position: absolute;
  top: 16px; right: 16px;
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  padding: 4px 10px;
  border-radius: 100px;
  background: rgba(108,99,255,0.15);
  color: var(--primary);
  border: 1px solid rgba(108,99,255,0.3);
}

.product-icon {
  width: 48px; height: 48px;
  background: rgba(108,99,255,0.12);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary);
}

.product-icon svg { width: 24px; height: 24px; }

.product-card h3 {
  font-size: 1rem;
  font-weight: 700;
  margin-top: 4px;
}

.product-card p {
  font-size: 0.875rem;
  color: var(--text-muted);
  line-height: 1.65;
  flex: 1;
}

.product-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--primary);
  margin-top: 8px;
  transition: gap var(--transition);
}

.product-link:hover { gap: 10px; }

.products-cta {
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
}

.products-cta p {
  color: var(--text-muted);
  font-size: 1rem;
}

/* ============================================
   WHY US
   ============================================ */
.why-us {
  padding: 100px 0;
}

.why-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}

.why-content .section-tag { display: block; margin-bottom: 12px; }

.why-content h2 {
  font-size: clamp(1.5rem, 3vw, 2.2rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 32px;
  line-height: 1.2;
}

.why-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.why-list li {
  display: flex;
  gap: 16px;
  align-items: flex-start;
}

.check-icon {
  flex-shrink: 0;
  width: 26px; height: 26px;
  background: rgba(0,212,170,0.15);
  color: var(--accent);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  font-weight: 700;
  margin-top: 2px;
}

.why-list strong {
  display: block;
  font-size: 0.95rem;
  font-weight: 700;
  margin-bottom: 4px;
}

.why-list p {
  font-size: 0.875rem;
  color: var(--text-muted);
  line-height: 1.6;
}

.why-stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.stat-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 24px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  transition: all var(--transition);
}

.stat-card:hover {
  border-color: rgba(108,99,255,0.3);
  transform: translateY(-2px);
}

.stat-num {
  font-size: 1.8rem;
  font-weight: 800;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: -0.02em;
  line-height: 1;
}

.stat-label {
  font-size: 0.8rem;
  color: var(--text-muted);
  font-weight: 500;
}

/* ============================================
   CONTACT
   ============================================ */
.contact {
  padding: 100px 0;
  background: var(--bg-card-2);
  border-top: 1px solid var(--border);
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: 64px;
  align-items: start;
}

.contact-info {
  display: flex;
  flex-direction: column;
  gap: 28px;
}

.contact-item {
  display: flex;
  gap: 14px;
  align-items: flex-start;
}

.contact-icon {
  width: 40px; height: 40px;
  background: rgba(108,99,255,0.12);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary);
  flex-shrink: 0;
}

.contact-icon svg { width: 18px; height: 18px; }

.contact-item strong {
  display: block;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-muted);
  margin-bottom: 4px;
}

.contact-item a {
  font-size: 0.9rem;
  color: var(--primary);
  font-weight: 500;
  transition: opacity var(--transition);
}

.contact-item a:hover { opacity: 0.8; }

/* Form */
.contact-form {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

label {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-muted);
  letter-spacing: 0.03em;
}

input, textarea {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 12px 16px;
  color: var(--text);
  font-family: var(--font);
  font-size: 0.9rem;
  transition: border-color var(--transition), box-shadow var(--transition);
  outline: none;
  resize: vertical;
}

input::placeholder, textarea::placeholder { color: var(--text-muted); opacity: 0.7; }

input:focus, textarea:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--primary-glow);
}

.form-notice {
  font-size: 0.85rem;
  text-align: center;
  min-height: 20px;
}

.form-notice.success { color: var(--accent); }
.form-notice.error   { color: #fb7185; }

/* ============================================
   FOOTER
   ============================================ */
.footer {
  border-top: 1px solid var(--border);
  padding: 40px 0;
}

.footer-top {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 24px;
}

.footer-logo {
  font-size: 1rem;
  font-weight: 700;
}

.footer-top p {
  font-size: 0.85rem;
  color: var(--text-muted);
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  padding-top: 20px;
  border-top: 1px solid var(--border);
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 900px) {
  .hero {
    flex-direction: column;
    gap: 48px;
    text-align: center;
    padding-top: 100px;
  }

  .hero-content { order: 1; }
  .hero-visual  { order: 2; width: 100%; }
  .hero-subtitle { margin: 0 auto 36px; }
  .hero-actions { justify-content: center; }

  .why-grid {
    grid-template-columns: 1fr;
    gap: 48px;
  }

  .contact-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }
}

@media (max-width: 640px) {
  .nav-links {
    display: none;
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(10, 11, 15, 0.97);
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 32px;
    z-index: 99;
  }

  .nav-links.open { display: flex; }
  .nav-links a { font-size: 1.2rem; }
  .hamburger { display: flex; z-index: 101; }

  .form-row { grid-template-columns: 1fr; }

  .why-stats { grid-template-columns: 1fr 1fr; }

  .footer-bottom { flex-direction: column; text-align: center; }
}

/* ============================================
   ANIMATIONS
   ============================================ */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(24px); }
  to   { opacity: 1; transform: translateY(0); }
}

.hero-badge, .hero h1, .hero-subtitle, .hero-actions, .hero-visual {
  animation: fadeUp 0.7s ease both;
}
.hero h1         { animation-delay: 0.1s; }
.hero-subtitle   { animation-delay: 0.2s; }
.hero-actions    { animation-delay: 0.3s; }
.hero-visual     { animation-delay: 0.4s; }