/* ============================================================
   NREVSA TECHNOLOGIES — Components CSS v2
   Navigation, Footer, Shared UI Components
   Enhanced: Real logo, glassmorphism, premium micro-interactions
   ============================================================ */

/* ── Navigation ── */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  height: var(--nav-h);
  display: flex;
  align-items: center;
  transition: all var(--transition-base);
}

.nav.scrolled {
  background: var(--bg-glass);
  backdrop-filter: blur(28px) saturate(180%);
  -webkit-backdrop-filter: blur(28px) saturate(180%);
  border-bottom: 1px solid var(--border);
  box-shadow: 0 4px 24px rgba(0,0,0,0.3), 0 1px 0 rgba(58,191,248,0.08);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-xl);
}

/* ── Logo — Real Image ── */
.nav-logo {
  display: flex;
  align-items: center;
  gap: 0.625rem;
  text-decoration: none;
  flex-shrink: 0;
  transition: opacity var(--transition-fast);
}
.nav-logo:hover { opacity: 0.85; }

/* Real logo image */
.nav-logo-img {
  height: 40px;
  width: auto;
  max-width: 160px;
  object-fit: contain;
  display: block;
  /* Ensure logo looks good on dark bg */
  filter: drop-shadow(0 0 8px rgba(58,191,248,0.15));
  transition: filter var(--transition-base);
}
.nav-logo:hover .nav-logo-img {
  filter: drop-shadow(0 0 12px rgba(58,191,248,0.3));
}

/* Light mode: invert if logo is dark */
[data-theme="light"] .nav-logo-img {
  filter: none;
}

/* Fallback SVG icon (shown if image fails) */
.nav-logo-icon {
  width: 36px;
  height: 36px;
  flex-shrink: 0;
  display: none; /* hidden when real image is used */
}

.nav-logo-text {
  font-family: var(--font-display);
  font-size: 1.375rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1;
}
.nav-logo-text .dark-part { color: var(--text-primary); }
.nav-logo-text .blue-part { color: var(--cyan); }

.nav-logo-tagline {
  font-size: 0.625rem;
  font-weight: 500;
  color: var(--text-muted);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  display: block;
  margin-top: 1px;
}

/* ── Nav Links ── */
.nav-links {
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.nav-link {
  position: relative;
  padding: 0.5rem 0.875rem;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-secondary);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
  white-space: nowrap;
}

.nav-link:hover,
.nav-link.active {
  color: var(--text-primary);
  background: rgba(255,255,255,0.05);
}

.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 50%;
  transform: translateX(-50%);
  width: 20px;
  height: 2px;
  border-radius: 1px;
  background: linear-gradient(90deg, var(--cyan), var(--violet));
  box-shadow: 0 0 8px rgba(58,191,248,0.5);
}

/* ── Nav Actions ── */
.nav-actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

/* ── Theme Toggle ── */
.theme-toggle {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  background: transparent;
  border: 1px solid var(--border);
  transition: all var(--transition-fast);
  cursor: pointer;
}
.theme-toggle:hover {
  color: var(--text-primary);
  border-color: var(--border-bright);
  background: var(--bg-card);
  box-shadow: 0 0 12px rgba(58,191,248,0.1);
}
.theme-toggle svg { width: 18px; height: 18px; }
.icon-sun  { display: none; }
.icon-moon { display: block; }
[data-theme="light"] .icon-sun  { display: block; }
[data-theme="light"] .icon-moon { display: none; }

/* ── Hamburger ── */
.nav-hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  width: 40px;
  height: 40px;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
  background: transparent;
  cursor: pointer;
  transition: all var(--transition-fast);
}
.nav-hamburger:hover { border-color: var(--border-bright); background: var(--bg-card); }
.nav-hamburger span {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--text-primary);
  border-radius: 1px;
  transition: all var(--transition-base);
}
.nav-hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-hamburger.open span:nth-child(2) { opacity: 0; transform: scaleX(0); }
.nav-hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ── Mobile Menu ── */
.nav-mobile {
  position: fixed;
  top: var(--nav-h);
  left: 0; right: 0;
  background: var(--bg-glass);
  backdrop-filter: blur(28px) saturate(180%);
  -webkit-backdrop-filter: blur(28px) saturate(180%);
  border-bottom: 1px solid var(--border);
  padding: var(--space-lg) var(--space-xl);
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  transform: translateY(-110%);
  opacity: 0;
  transition: all var(--transition-base);
  z-index: 999;
}
.nav-mobile.open {
  transform: translateY(0);
  opacity: 1;
}
.nav-mobile .nav-link {
  padding: 0.875rem 1rem;
  font-size: 1rem;
  border-radius: var(--radius-md);
}
.nav-mobile .btn {
  margin-top: var(--space-sm);
  justify-content: center;
}

/* ── Page Hero Shared ── */
.page-hero {
  padding: calc(var(--nav-h) + var(--space-4xl)) 0 var(--space-4xl);
  position: relative;
  overflow: hidden;
}

.page-hero-label {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.375rem 1rem;
  border-radius: var(--radius-full);
  background: rgba(58,191,248,0.07);
  border: 1px solid rgba(58,191,248,0.18);
  color: var(--cyan);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: var(--space-lg);
}

/* ── Footer ── */
.footer {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border);
  padding: var(--space-5xl) 0 var(--space-xl);
  position: relative;
  overflow: hidden;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--space-3xl);
  margin-bottom: var(--space-3xl);
}

.footer-brand {}
.footer-brand .nav-logo { margin-bottom: var(--space-lg); }
.footer-brand p {
  color: var(--text-secondary);
  font-size: 0.9rem;
  line-height: 1.7;
  max-width: 300px;
  margin-bottom: var(--space-xl);
}

.footer-social {
  display: flex;
  gap: 0.75rem;
}
.social-link {
  width: 38px;
  height: 38px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  transition: all var(--transition-fast);
}
.social-link:hover {
  border-color: var(--cyan);
  color: var(--cyan);
  background: rgba(58,191,248,0.08);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(58,191,248,0.15);
}
.social-link svg { width: 16px; height: 16px; }

.footer-col h4 {
  font-family: var(--font-display);
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: 0.05em;
  text-transform: uppercase;
  margin-bottom: var(--space-lg);
}
.footer-col ul { display: flex; flex-direction: column; gap: 0.625rem; }
.footer-col ul li a {
  font-size: 0.9rem;
  color: var(--text-secondary);
  transition: color var(--transition-fast);
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
}
.footer-col ul li a:hover { color: var(--cyan); }
.footer-col ul li a:hover::before {
  content: '→';
  font-size: 0.75rem;
}

.footer-newsletter {
  margin-top: var(--space-lg);
}
.footer-newsletter p {
  font-size: 0.875rem;
  color: var(--text-secondary);
  margin-bottom: var(--space-md);
}
.newsletter-form {
  display: flex;
  gap: 0.5rem;
}
.newsletter-form input {
  flex: 1;
  padding: 0.625rem 1rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-full);
  color: var(--text-primary);
  font-size: 0.875rem;
  outline: none;
  transition: border-color var(--transition-fast);
}
.newsletter-form input:focus { border-color: var(--cyan); }
.newsletter-form input::placeholder { color: var(--text-muted); }
.newsletter-form button {
  padding: 0.625rem 1.25rem;
  background: linear-gradient(135deg, var(--cyan), var(--violet));
  color: #fff;
  border-radius: var(--radius-full);
  font-size: 0.8125rem;
  font-weight: 600;
  transition: all var(--transition-fast);
  white-space: nowrap;
}
.newsletter-form button:hover { opacity: 0.9; transform: translateY(-1px); box-shadow: 0 4px 12px rgba(58,191,248,0.25); }

.footer-bottom {
  padding-top: var(--space-xl);
  border-top: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-lg);
  flex-wrap: wrap;
}
.footer-bottom p {
  font-size: 0.8125rem;
  color: var(--text-muted);
}
.footer-bottom-links {
  display: flex;
  gap: var(--space-lg);
}
.footer-bottom-links a {
  font-size: 0.8125rem;
  color: var(--text-muted);
  transition: color var(--transition-fast);
}
.footer-bottom-links a:hover { color: var(--text-secondary); }

/* ── Stats Bar ── */
.stats-bar {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
}
.stat-item {
  background: var(--bg-card);
  padding: var(--space-xl);
  text-align: center;
  transition: background var(--transition-fast);
  position: relative;
  overflow: hidden;
}
.stat-item::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--cyan), var(--violet));
  transform: scaleX(0);
  transition: transform var(--transition-base);
}
.stat-item:hover { background: var(--bg-card-hover); }
.stat-item:hover::before { transform: scaleX(1); }
.stat-number {
  font-family: var(--font-display);
  font-size: 2.25rem;
  font-weight: 800;
  line-height: 1;
  margin-bottom: 0.375rem;
}
.stat-label {
  font-size: 0.8125rem;
  color: var(--text-secondary);
  font-weight: 500;
}

/* ── Tech Tags ── */
.tech-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: var(--space-md);
}
.tech-tag {
  padding: 0.25rem 0.75rem;
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--border);
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--text-secondary);
  transition: all var(--transition-fast);
}
.tech-tag:hover {
  border-color: var(--border-bright);
  color: var(--text-primary);
  background: rgba(58,191,248,0.05);
}

/* ── Service Icon Box ── */
.service-icon {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-lg);
  position: relative;
  overflow: hidden;
  transition: transform var(--transition-spring);
}
.service-icon::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, var(--cyan), var(--violet));
  opacity: 0.12;
  transition: opacity var(--transition-base);
}
.card:hover .service-icon::before { opacity: 0.22; }
.card:hover .service-icon { transform: scale(1.08) rotate(-3deg); }
.service-icon svg {
  width: 26px;
  height: 26px;
  position: relative;
  z-index: 1;
}

/* ── Service Link ── */
.service-link {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  margin-top: var(--space-lg);
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--cyan);
  transition: all var(--transition-fast);
}
.service-link:hover {
  gap: 0.625rem;
  color: var(--cyan-light);
}

/* ── Timeline ── */
.timeline {
  position: relative;
  padding-left: 2rem;
}
.timeline::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0; bottom: 0;
  width: 2px;
  background: linear-gradient(180deg, var(--cyan), var(--violet), transparent);
}
.timeline-item {
  position: relative;
  padding-bottom: var(--space-2xl);
}
.timeline-item::before {
  content: '';
  position: absolute;
  left: -2.375rem;
  top: 0.375rem;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--cyan), var(--violet));
  box-shadow: 0 0 12px rgba(58,191,248,0.5);
}
.timeline-year {
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--cyan);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 0.375rem;
}
.timeline-title {
  font-family: var(--font-display);
  font-size: 1.125rem;
  font-weight: 700;
  margin-bottom: 0.375rem;
}
.timeline-desc {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ── Testimonial Card ── */
.testimonial-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}
.testimonial-card::before {
  content: '"';
  position: absolute;
  top: -10px;
  right: 20px;
  font-size: 8rem;
  font-family: var(--font-display);
  font-weight: 800;
  color: var(--cyan);
  opacity: 0.04;
  line-height: 1;
  pointer-events: none;
}
.testimonial-card:hover {
  border-color: var(--border-bright);
  transform: translateY(-4px);
  box-shadow: var(--shadow-md), var(--shadow-glow);
}
.testimonial-stars {
  display: flex;
  gap: 3px;
  margin-bottom: var(--space-md);
  color: #F59E0B;
}
.testimonial-text {
  font-size: 0.9375rem;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: var(--space-lg);
  font-style: italic;
}
.testimonial-author {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}
.testimonial-avatar {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--cyan), var(--violet));
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1rem;
  color: #fff;
  flex-shrink: 0;
}
.testimonial-name {
  font-weight: 600;
  font-size: 0.9rem;
}
.testimonial-role {
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* ── Project Card ── */
.project-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all var(--transition-base);
}
.project-card:hover {
  border-color: var(--border-bright);
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg), var(--shadow-glow);
}
.project-card-image {
  width: 100%;
  height: 220px;
  object-fit: cover;
  background: var(--bg-secondary);
  position: relative;
  overflow: hidden;
}
.project-card-image-placeholder {
  width: 100%;
  height: 220px;
  background: linear-gradient(135deg, var(--bg-secondary), var(--bg-card));
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}
.project-card-image-placeholder::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(58,191,248,0.07), rgba(124,58,237,0.07));
}
.project-card-body { padding: var(--space-xl); }
.project-card-category {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--cyan);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 0.5rem;
}
.project-card-title {
  font-family: var(--font-display);
  font-size: 1.125rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
  line-height: 1.3;
}
.project-card-desc {
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: var(--space-lg);
}
.project-card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: var(--space-md);
  border-top: 1px solid var(--border);
}
.project-outcome {
  font-size: 0.8125rem;
  color: #34D399;
  font-weight: 600;
}

/* ── Team Card ── */
.team-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  text-align: center;
  transition: all var(--transition-base);
}
.team-card:hover {
  border-color: var(--border-bright);
  transform: translateY(-4px);
  box-shadow: var(--shadow-md), var(--shadow-glow);
}
.team-avatar {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--cyan), var(--violet));
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.5rem;
  color: #fff;
  margin: 0 auto var(--space-lg);
  position: relative;
}
.team-avatar::after {
  content: '';
  position: absolute;
  inset: -3px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--cyan), var(--violet));
  z-index: -1;
  opacity: 0.25;
}
.team-name {
  font-family: var(--font-display);
  font-size: 1.0625rem;
  font-weight: 700;
  margin-bottom: 0.25rem;
}
.team-role {
  font-size: 0.8125rem;
  color: var(--cyan);
  font-weight: 600;
  margin-bottom: var(--space-md);
}
.team-bio {
  font-size: 0.8125rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ── Job Card ── */
.job-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--space-lg);
  transition: all var(--transition-base);
}
.job-card:hover {
  border-color: var(--border-bright);
  background: var(--bg-card-hover);
  transform: translateX(4px);
  box-shadow: var(--shadow-sm), var(--shadow-glow);
}
.job-info {}
.job-title {
  font-family: var(--font-display);
  font-size: 1.0625rem;
  font-weight: 700;
  margin-bottom: 0.375rem;
}
.job-meta {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
  margin-top: 0.5rem;
}
.job-meta span {
  font-size: 0.8125rem;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

/* ── Page Transition ── */
.page-transition {
  animation: fadeInUp 0.5s ease forwards;
}
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(20px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ── Cursor Glow (JS-driven) ── */
.cursor-glow {
  position: fixed;
  width: 400px;
  height: 400px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(58,191,248,0.04) 0%, transparent 70%);
  pointer-events: none;
  z-index: 1;
  transform: translate(-50%, -50%);
  transition: opacity 0.3s ease;
  will-change: transform;
}

/* ── Responsive Nav ── */
@media (max-width: 900px) {
  .nav-links { display: none; }
  .nav-hamburger { display: flex; }
  .nav-actions .btn { display: none; }
}

@media (max-width: 768px) {
  .footer-grid { grid-template-columns: 1fr 1fr; gap: var(--space-2xl); }
  .stats-bar { grid-template-columns: repeat(2, 1fr); }
  .job-card { flex-direction: column; }
}

@media (max-width: 480px) {
  .footer-grid { grid-template-columns: 1fr; }
  .stats-bar { grid-template-columns: 1fr 1fr; }
  .footer-bottom { flex-direction: column; text-align: center; }
}