/* ===== LAYOUT.CSS ===== */
/* Navigation, footer, grid, responsive breakpoints */

/* ---------- Header & Sticky Nav ---------- */
.site-header {
  background: var(--white);
  box-shadow: 0 6px 20px rgba(0,0,0,0.02);
  position: sticky;
  top: 0;
  z-index: 100;
  padding: 0.6rem 0;
  border-bottom: 1px solid var(--grey-mid);
  transition: box-shadow 0.3s;
}
.site-header.scrolled {
  box-shadow: 0 10px 30px rgba(10,31,68,0.1);
}

.nav-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
}

.logo a {
  display: flex;
  align-items: center;
  gap: 0.6rem;
}
.logo-img {
  height: 48px;
  width: auto;
  border-radius: 8px;
}
.logo-text {
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--navy);
  letter-spacing: -0.5px;
  line-height: 1;
}
.logo-sub {
  font-size: 0.75rem;
  letter-spacing: 2px;
  color: var(--text-grey);
  display: block;
}

.main-nav .nav-list {
  display: flex;
  gap: 1.8rem;
  flex-wrap: wrap;
}
.main-nav a {
  font-weight: 500;
  padding-bottom: 4px;
  border-bottom: 2px solid transparent;
}
.main-nav a:hover,
.main-nav a.active {
  border-bottom-color: var(--teal);
  color: var(--navy);
}

/* Mobile nav toggle */
.nav-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 1.8rem;
  color: var(--navy);
  cursor: pointer;
}

/* ---------- Footer ---------- */
.site-footer {
  background: var(--navy);
  color: #ddd;
  padding-top: 4rem;
  font-size: 0.95rem;
}
.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 2.5rem;
  margin-bottom: 2rem;
}
.footer-about h3,
.footer-links h4,
.footer-services h4,
.footer-contact h4 {
  color: var(--white);
  margin-bottom: 1.2rem;
  font-weight: 500;
}
.footer-about p { color: #ccc; }
.footer-links ul,
.footer-services ul {
  list-style: none;
}
.footer-links li,
.footer-services li {
  margin-bottom: 0.6rem;
}
.footer-links a,
.footer-services a,
.footer-contact a {
  color: #ccc;
  transition: var(--transition);
}
.footer-links a:hover,
.footer-services a:hover {
  color: var(--white);
}
.social-placeholder {
  display: flex;
  gap: 1.2rem;
  margin-top: 1.5rem;
}
.social-placeholder a {
  color: #ccc;
  font-size: 1.5rem;
}
.social-placeholder a:hover {
  color: var(--white);
}
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding: 1.8rem 0;
  text-align: center;
  color: #aaa;
}
.footer-tagline {
  font-style: italic;
  color: #bbb;
  margin-top: 0.5rem;
}

/* ---------- Page Header (inner pages) ---------- */
.page-header {
  padding: 3rem 0 2rem;
  background: var(--grey-light);
  text-align: center;
}
.page-header h1 {
  margin-bottom: 0.5rem;
}
.page-header p {
  font-size: 1.2rem;
  color: var(--text-grey);
}

/* ---------- Responsive Breakpoints ---------- */
@media (max-width: 992px) {
  .nav-toggle {
    display: block;
  }
  .main-nav {
    position: absolute;
    top: 100%;
    left: 0;
    width: 100%;
    background: var(--white);
    padding: 0 1.5rem;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
    box-shadow: 0 10px 20px rgba(0,0,0,0.05);
  }
  .main-nav.active {
    max-height: 400px;
  }
  .main-nav .nav-list {
    flex-direction: column;
    padding: 1.5rem 0;
    gap: 1rem;
  }
}

@media (max-width: 768px) {
  .container { width: 85%; }
  h1 { font-size: 2.2rem; }
  h2 { font-size: 1.8rem; }
  h3 { font-size: 1.3rem; }
  
  /* Hide hero visual (icon grid) on tablets & mobile */
  .hero-visual { display: none; }
  
  /* Stack grids */
  .hero-grid,
  .about-grid,
  .service-block,
  .founder-card,
  .contact-grid,
  .process-grid,
  .stats-grid,
  .testimonial-grid,
  .portfolio-grid,
  .blog-grid {
    grid-template-columns: 1fr !important;
  }
  
  .footer-grid { grid-template-columns: 1fr; }
}

@media (max-width: 480px) {
  .container { width: 92%; }
  h1 { font-size: 1.8rem; }
  .hero-buttons .btn { width: 100%; }
  .btn { padding: 0.8rem 1.5rem; }
  .btn-large { padding: 0.9rem 1.8rem; }
}