/* ==========================================================================
   SECTIONS STYLING
   ========================================================================== */

/* --------------------------------------------------------------------------
   1. Header / Navigation
   -------------------------------------------------------------------------- */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: var(--z-header);
  background: var(--bg-glass);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-subtle);
  transition: all var(--transition-normal);
}

.site-header.scrolled {
  background: var(--bg-glass-heavy);
  box-shadow: var(--shadow-md);
  border-bottom-color: var(--border-medium);
}

.header-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 80px;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 1.35rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  color: var(--text-primary);
}

.logo-symbol {
  font-family: var(--font-mono);
  color: var(--primary-light);
  font-weight: 700;
  font-size: 1.15rem;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 2rem;
}

.nav-link {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-secondary);
  position: relative;
  padding: 0.25rem 0;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0%;
  height: 2px;
  background: var(--grad-primary);
  border-radius: var(--radius-full);
  transition: width var(--transition-normal);
}

.nav-link:hover, .nav-link.active {
  color: var(--text-primary);
}

.nav-link:hover::after, .nav-link.active::after {
  width: 100%;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.theme-toggle .icon-sun {
  display: none;
}
.theme-toggle .icon-moon {
  display: block;
}

[data-theme="light"] .theme-toggle .icon-sun {
  display: block;
}
[data-theme="light"] .theme-toggle .icon-moon {
  display: none;
}

.hamburger-btn {
  display: none;
  flex-direction: column;
  justify-content: space-around;
  width: 32px;
  height: 24px;
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 0;
  z-index: 1001;
}

.hamburger-btn span {
  width: 100%;
  height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: all var(--transition-normal);
}

/* --------------------------------------------------------------------------
   2. Hero Section
   -------------------------------------------------------------------------- */
.hero-section {
  padding-top: calc(80px + var(--space-4xl));
  padding-bottom: var(--space-4xl);
  min-height: 100vh;
  display: flex;
  align-items: center;
}

.hero-container {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: var(--space-3xl);
  align-items: center;
}

.hero-content {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

.hero-status {
  margin-bottom: var(--space-lg);
}

.hero-title {
  margin-bottom: var(--space-lg);
}

.hero-description {
  font-size: 1.2rem;
  margin-bottom: var(--space-2xl);
  max-width: 600px;
}

.hero-cta-group {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-bottom: var(--space-3xl);
}

.hero-metrics {
  display: flex;
  align-items: center;
  gap: 2rem;
  padding-top: var(--space-xl);
  border-top: 1px solid var(--border-subtle);
  width: 100%;
}

.metric-item {
  display: flex;
  flex-direction: column;
}

.metric-number {
  font-size: 2.25rem;
  font-weight: 800;
  font-family: var(--font-sans);
  line-height: 1.1;
}

.metric-label {
  font-size: 0.85rem;
  color: var(--text-muted);
  font-weight: 500;
}

.metric-divider {
  width: 1px;
  height: 38px;
  background: var(--border-medium);
}

/* --------------------------------------------------------------------------
   3. Services Section
   -------------------------------------------------------------------------- */
.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
  gap: 1.75rem;
}

.service-card {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.service-icon-wrapper {
  width: 58px;
  height: 58px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.5rem;
  color: white;
}

.icon-gradient-indigo {
  background: linear-gradient(135deg, #6366f1, #818cf8);
  box-shadow: 0 8px 20px rgba(99, 102, 241, 0.35);
}

.icon-gradient-cyan {
  background: linear-gradient(135deg, #06b6d4, #38bdf8);
  box-shadow: 0 8px 20px rgba(6, 182, 212, 0.35);
}

.icon-gradient-pink {
  background: linear-gradient(135deg, #ec4899, #f472b6);
  box-shadow: 0 8px 20px rgba(236, 72, 153, 0.35);
}

.icon-gradient-emerald {
  background: linear-gradient(135deg, #10b981, #34d399);
  box-shadow: 0 8px 20px rgba(16, 185, 129, 0.35);
}

.icon-gradient-amber {
  background: linear-gradient(135deg, #f59e0b, #fbbf24);
  box-shadow: 0 8px 20px rgba(245, 158, 11, 0.35);
}

.icon-gradient-violet {
  background: linear-gradient(135deg, #8b5cf6, #c084fc);
  box-shadow: 0 8px 20px rgba(139, 92, 246, 0.35);
}

.service-title {
  margin-bottom: 0.75rem;
}

.service-desc {
  font-size: 0.95rem;
  margin-bottom: 1.5rem;
}

.service-features {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  margin-bottom: 1.5rem;
}

.service-features li {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 0.88rem;
  color: var(--text-secondary);
}

.service-features li i {
  color: var(--accent-emerald);
  width: 16px;
  height: 16px;
  flex-shrink: 0;
}

.service-footer {
  padding-top: 1rem;
  border-top: 1px solid var(--border-subtle);
}

.service-link {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--primary-light);
}

.service-link:hover {
  gap: 0.75rem;
  color: #ffffff;
}

/* --------------------------------------------------------------------------
   4. Portfolio / Projects Section
   -------------------------------------------------------------------------- */
.portfolio-filters {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin-bottom: var(--space-3xl);
}

.filter-btn {
  padding: 0.6rem 1.4rem;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-full);
  color: var(--text-secondary);
  font-size: 0.9rem;
  font-weight: 600;
  transition: all var(--transition-normal);
}

.filter-btn:hover {
  border-color: var(--border-active);
  color: var(--text-primary);
}

.filter-btn.active {
  background: var(--primary);
  color: #ffffff;
  border-color: var(--primary);
  box-shadow: 0 4px 15px rgba(99, 102, 241, 0.4);
}

.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(420px, 1fr));
  gap: 2rem;
}

.project-card {
  padding: 0;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.project-image-container {
  height: 260px;
  position: relative;
  background: #0d121f;
  overflow: hidden;
  border-bottom: 1px solid var(--border-subtle);
}

/* Mockup UI Previews inside Cards */
.project-mockup {
  width: 100%;
  height: 100%;
  padding: 1rem;
  display: flex;
  flex-direction: column;
}

.mockup-header {
  display: flex;
  align-items: center;
  gap: 6px;
  background: rgba(20, 26, 42, 0.85);
  padding: 0.4rem 0.8rem;
  border-radius: 8px 8px 0 0;
  border: 1px solid var(--border-subtle);
}

.mock-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--text-muted);
}

.mock-url {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--text-muted);
  margin-left: 0.5rem;
}

.mockup-content {
  flex: 1;
  background: rgba(15, 20, 32, 0.95);
  border: 1px solid var(--border-subtle);
  border-top: none;
  border-radius: 0 0 8px 8px;
  padding: 0.85rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.mock-stat-row {
  display: flex;
  gap: 0.75rem;
}

.mock-stat-box {
  flex: 1;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-subtle);
  border-radius: 6px;
  padding: 0.5rem;
  display: flex;
  flex-direction: column;
  font-size: 0.75rem;
}

.mock-mini-tag {
  color: var(--text-muted);
  font-size: 0.65rem;
}

.mock-trend-up {
  color: var(--accent-emerald);
  font-weight: 700;
  font-size: 0.7rem;
}

.mock-chart-visual {
  flex: 1;
  background: linear-gradient(180deg, rgba(99, 102, 241, 0.3) 0%, rgba(99, 102, 241, 0.02) 100%);
  border-top: 2px solid var(--primary);
  border-radius: 4px;
}

.ecommerce-layout .mock-hero-banner {
  background: linear-gradient(135deg, #1e1b4b, #312e81);
  padding: 0.75rem;
  border-radius: 6px;
  text-align: center;
}

.mock-badge {
  font-size: 0.6rem;
  background: var(--accent-pink);
  color: white;
  padding: 2px 6px;
  border-radius: 4px;
  font-weight: 700;
}

.mock-product-grid {
  display: flex;
  gap: 0.5rem;
  flex: 1;
}

.mock-product-item {
  flex: 1;
  background: rgba(255, 255, 255, 0.04);
  border-radius: 6px;
}

.fintech-layout .mock-card-visual {
  background: linear-gradient(135deg, #0284c7, #6366f1);
  padding: 0.75rem;
  border-radius: 8px;
  color: white;
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.card-chip {
  width: 24px;
  height: 16px;
  background: #fbbf24;
  border-radius: 3px;
}

.card-number {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.1em;
}

.card-holder {
  font-size: 0.65rem;
  font-weight: 700;
}

.mock-transactions {
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.mock-tx-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.75rem;
  background: rgba(255, 255, 255, 0.03);
  padding: 0.4rem 0.6rem;
  border-radius: 4px;
}

.tx-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent-emerald);
}

.ai-layout .mock-chat-bubble {
  padding: 0.5rem 0.75rem;
  border-radius: 8px;
  font-size: 0.75rem;
  line-height: 1.4;
}

.ai-layout .mock-chat-bubble.bot {
  background: rgba(99, 102, 241, 0.15);
  border: 1px solid rgba(99, 102, 241, 0.3);
  align-self: flex-start;
}

.bot-badge {
  display: block;
  font-size: 0.6rem;
  color: var(--primary-light);
  font-weight: 700;
  text-transform: uppercase;
}

.ai-layout .mock-chat-bubble.user {
  background: rgba(255, 255, 255, 0.08);
  align-self: flex-end;
}

.project-overlay {
  position: absolute;
  inset: 0;
  background: rgba(7, 9, 14, 0.85);
  backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity var(--transition-normal);
}

.project-card:hover .project-overlay {
  opacity: 1;
}

.project-info {
  padding: 1.75rem;
  display: flex;
  flex-direction: column;
  flex: 1;
}

.project-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.75rem;
}

.project-tag {
  font-size: 0.75rem;
  text-transform: uppercase;
  font-weight: 700;
  letter-spacing: 0.05em;
  color: var(--primary-light);
}

.project-metric {
  font-size: 0.8rem;
  font-weight: 700;
}

.project-name {
  font-size: 1.25rem;
  margin-bottom: 0.5rem;
}

.project-summary {
  font-size: 0.9rem;
  margin-bottom: 1.25rem;
  flex: 1;
}

.project-tech-stack {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

.tech-pill {
  font-size: 0.75rem;
  font-family: var(--font-mono);
  padding: 0.2rem 0.6rem;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
}

/* --------------------------------------------------------------------------
   5. Tech Stack Section
   -------------------------------------------------------------------------- */
.stack-categories-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 1.75rem;
}

.stack-category-card {
  display: flex;
  flex-direction: column;
}

.stack-cat-header {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1.5rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--border-subtle);
}

.stack-cat-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
}

.icon-indigo { background: var(--primary); }
.icon-cyan { background: var(--secondary); }
.icon-pink { background: var(--accent-pink); }

.skills-pill-list {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(130px, 1fr));
  gap: 0.65rem;
}

.skill-pill {
  padding: 0.6rem 0.8rem;
  background: rgba(255, 255, 255, 0.025);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
  transition: all var(--transition-normal);
}

.skill-pill:hover {
  background: rgba(99, 102, 241, 0.1);
  border-color: var(--primary-light);
  transform: translateY(-2px);
}

.skill-name {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-primary);
}

.skill-level {
  font-size: 0.7rem;
  color: var(--text-muted);
}

/* --------------------------------------------------------------------------
   6. Work Process / Metodología
   -------------------------------------------------------------------------- */
.process-timeline {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.5rem;
  position: relative;
}

.process-card {
  display: flex;
  flex-direction: column;
  position: relative;
}

.process-step-num {
  position: absolute;
  top: 1rem;
  right: 1.5rem;
  font-size: 2.5rem;
  font-weight: 800;
  font-family: var(--font-mono);
  color: rgba(255, 255, 255, 0.05);
  line-height: 1;
}

.process-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  margin-bottom: 1.25rem;
}

.icon-emerald { background: var(--accent-emerald); }
.icon-amber { background: var(--accent-amber); }

.process-card h3 {
  font-size: 1.1rem;
  margin-bottom: 0.6rem;
}

.process-card p {
  font-size: 0.88rem;
}

/* --------------------------------------------------------------------------
   7. Testimonials
   -------------------------------------------------------------------------- */
.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 1.75rem;
}

.testimonial-card {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.testimonial-stars {
  display: flex;
  gap: 4px;
  margin-bottom: 1.25rem;
}

.star-filled {
  color: #fbbf24;
  fill: #fbbf24;
  width: 18px;
  height: 18px;
}

.testimonial-quote {
  font-size: 0.95rem;
  font-style: italic;
  margin-bottom: 1.5rem;
  flex: 1;
}

.testimonial-author {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding-top: 1rem;
  border-top: 1px solid var(--border-subtle);
}

.author-avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 0.9rem;
  color: white;
}

.avatar-1 { background: linear-gradient(135deg, #6366f1, #a855f7); }
.avatar-2 { background: linear-gradient(135deg, #06b6d4, #3b82f6); }
.avatar-3 { background: linear-gradient(135deg, #ec4899, #f43f5e); }

.author-info h4 {
  font-size: 0.95rem;
  margin-bottom: 0.15rem;
}

.author-info span {
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* --------------------------------------------------------------------------
   8. FAQ Section
   -------------------------------------------------------------------------- */
.faq-container {
  max-width: 860px;
}

.faq-accordion {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.faq-item {
  padding: 0;
  overflow: hidden;
  transition: all var(--transition-normal);
}

.faq-question {
  width: 100%;
  padding: 1.25rem 1.75rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--text-primary);
  text-align: left;
  cursor: pointer;
  background: transparent;
}

.faq-arrow {
  transition: transform var(--transition-normal);
  flex-shrink: 0;
  color: var(--primary-light);
}

.faq-item.active .faq-arrow {
  transform: rotate(180deg);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease-out, padding 0.35s ease-out;
  padding: 0 1.75rem;
}

.faq-item.active .faq-answer {
  max-height: 250px;
  padding-bottom: 1.5rem;
}

/* --------------------------------------------------------------------------
   9. Contact Section
   -------------------------------------------------------------------------- */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.3fr;
  gap: 2rem;
}

.contact-methods {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  margin-bottom: 2rem;
}

.contact-method-item {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
}

.method-icon {
  width: 42px;
  height: 42px;
  border-radius: var(--radius-md);
  background: rgba(99, 102, 241, 0.1);
  border: 1px solid rgba(99, 102, 241, 0.25);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary-light);
  flex-shrink: 0;
}

.method-details {
  display: flex;
  flex-direction: column;
}

.method-label {
  font-size: 0.75rem;
  text-transform: uppercase;
  color: var(--text-muted);
  font-weight: 600;
}

.method-value {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-primary);
}

.copy-email-wrapper {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.btn-copy-email {
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  padding: 2px;
  display: inline-flex;
  align-items: center;
  transition: color var(--transition-fast);
}

.btn-copy-email:hover {
  color: var(--primary-light);
}

.social-links-container {
  padding-top: 1.5rem;
  border-top: 1px solid var(--border-subtle);
}

.social-label {
  display: block;
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-bottom: 0.75rem;
}

.social-icons {
  display: flex;
  gap: 0.6rem;
}

/* Contact Form Elements */
.contact-form {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.25rem;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  position: relative;
}

.form-group label {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-primary);
}

.form-input {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-md);
  padding: 0.85rem 1rem;
  color: var(--text-primary);
  font-family: inherit;
  font-size: 0.95rem;
  outline: none;
  transition: border-color var(--transition-normal), box-shadow var(--transition-normal);
}

.form-input:focus {
  border-color: var(--primary);
  box-shadow: 0 0 15px rgba(99, 102, 241, 0.25);
  background: rgba(255, 255, 255, 0.06);
}

.form-error {
  font-size: 0.75rem;
  color: #ef4444;
  display: none;
}

.form-group.has-error .form-input {
  border-color: #ef4444;
}

.form-group.has-error .form-error {
  display: block;
}

/* --------------------------------------------------------------------------
   10. Footer
   -------------------------------------------------------------------------- */
.site-footer {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-subtle);
  padding: var(--space-4xl) 0 var(--space-2xl);
}

.footer-top {
  display: grid;
  grid-template-columns: 1.5fr 2fr;
  gap: var(--space-3xl);
  margin-bottom: var(--space-3xl);
}

.footer-brand {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.footer-tagline {
  max-width: 320px;
  font-size: 0.95rem;
}

.footer-links-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

.footer-col h4 {
  font-size: 0.95rem;
  margin-bottom: 1.25rem;
  color: var(--text-primary);
}

.footer-col ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.footer-col a {
  font-size: 0.88rem;
  color: var(--text-secondary);
}

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

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: var(--space-xl);
  border-top: 1px solid var(--border-subtle);
  font-size: 0.85rem;
  color: var(--text-muted);
}

.footer-status-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.8rem;
  color: var(--accent-emerald);
}