/* ==========================================================================
   css/layout.css — Dritrez Solutions Global Structural Layout System
   ========================================================================== */

/* ──────────────────────────────────────────────────────────────────────────
   CONTAINER
   ────────────────────────────────────────────────────────────────────────── */
.container {
  width:        100%;
  max-width:    var(--container-max);
  margin-left:  auto;
  margin-right: auto;
  padding-left:  clamp(1.25rem, 4vw, 2.5rem);
  padding-right: clamp(1.25rem, 4vw, 2.5rem);
}

.container-narrow {
  max-width: var(--container-narrow);
}

/* ──────────────────────────────────────────────────────────────────────────
   SECTION WRAPPERS
   ────────────────────────────────────────────────────────────────────────── */
.section-wrapper {
  padding-top:    var(--section-gap);
  padding-bottom: var(--section-gap);
  position:       relative;
}

.section-wrapper-sm {
  padding-top:    clamp(2.5rem, 5vw, 4rem);
  padding-bottom: clamp(2.5rem, 5vw, 4rem);
}

.section-alt {
  background: var(--dark-surface);
}

.section-alt-2 {
  background: rgba(255, 255, 255, 0.015);
}

/* Mesh gradient overlays for section variety */
.section-mesh {
  background:
    radial-gradient(ellipse 80% 40% at 50% 0%,  rgba(0, 243, 255, 0.06) 0%, transparent 70%),
    var(--dark-bg);
}

/* ──────────────────────────────────────────────────────────────────────────
   GRID SYSTEM
   ────────────────────────────────────────────────────────────────────────── */
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: var(--space-8); }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--space-8); }
.grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--space-6); }

.grid-center { align-items: center; }

.col-split-60-40 { display: grid; grid-template-columns: 60fr 40fr; gap: var(--space-16); align-items: center; }
.col-split-50-50 { display: grid; grid-template-columns: 1fr 1fr;   gap: var(--space-12); align-items: center; }

/* ──────────────────────────────────────────────────────────────────────────
   GLASSMORPHISM NAVBAR
   ────────────────────────────────────────────────────────────────────────── */
.navbar {
  position:       fixed;
  top:            0; left: 0; right: 0;
  height:         var(--navbar-h);
  z-index:        var(--z-sticky);
  display:        flex;
  align-items:    center;
  transition:     background      var(--transition-base),
                  backdrop-filter var(--transition-base),
                  border-color    var(--transition-base),
                  box-shadow      var(--transition-base);
}

.navbar.scrolled {
  background:            rgba(5, 10, 20, 0.82);
  backdrop-filter:       blur(20px) saturate(1.4);
  -webkit-backdrop-filter: blur(20px) saturate(1.4);
  border-bottom:         1px solid rgba(255, 255, 255, 0.06);
  box-shadow:            0 4px 30px rgba(0, 0, 0, 0.3);
}

.navbar .container {
  display:         flex;
  align-items:     center;
  justify-content: space-between;
  height:          100%;
  gap:             var(--space-8);
}

/* Brand */
.navbar-brand {
  font-family:     var(--font-brand);   /* Orbitron for brand mark only */
  font-size:       clamp(1.25rem, 2vw, 1.5rem);
  font-weight:     900;
  color:           var(--text-white);
  letter-spacing:  3px;
  text-decoration: none;
  white-space:     nowrap;
  transition:      color var(--transition-base);
  flex-shrink:     0;
}

.navbar-brand span {
  color: var(--primary);
}

.navbar-brand:hover { color: var(--primary); }

/* Nav List */
.nav-list {
  display:     flex;
  align-items: center;
  gap:         var(--space-2);
}

/* Nav Link */
.nav-link {
  font-size:       var(--text-sm);
  font-weight:     500;
  color:           var(--text-muted);
  text-decoration: none;
  padding:         0.4rem var(--space-3);
  border-radius:   var(--radius-sm);
  letter-spacing:  0.5px;
  transition:      color var(--transition-base), background var(--transition-base);
  position:        relative;
  white-space:     nowrap;
}

/* Underline accent */
.nav-link::after {
  content:    '';
  position:   absolute;
  bottom:     -2px; left: var(--space-3); right: var(--space-3);
  height:     2px;
  background: var(--primary);
  border-radius: var(--radius-full);
  transform:  scaleX(0);
  transition: transform var(--transition-base);
}

.nav-link:hover {
  color:      var(--text-white);
  background: rgba(255, 255, 255, 0.04);
}

.nav-link:hover::after { transform: scaleX(1); }

.nav-link.active {
  color: var(--text-white);
}

.nav-link.active::after { transform: scaleX(1); }

/* CTA Link */
.nav-cta {
  background:   var(--primary-glow-sm);
  border:       1px solid rgba(0, 243, 255, 0.2);
  color:        var(--primary);
  padding:      0.5rem 1.25rem;
  font-weight:  600;
}

.nav-cta::after { display: none; }

.nav-cta:hover {
  background: var(--primary);
  color:      var(--text-inverse);
  border-color: var(--primary);
}

/* Mobile Toggle */
.mobile-toggle {
  display:         none;
  flex-direction:  column;
  gap:             5px;
  cursor:          pointer;
  padding:         var(--space-2);
  background:      transparent;
  border:          none;
}

.mobile-toggle span {
  display:          block;
  width:            24px;
  height:           2px;
  background:       var(--text-main);
  border-radius:    var(--radius-full);
  transition:       all var(--transition-base);
  transform-origin: center;
}

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

/* ──────────────────────────────────────────────────────────────────────────
   PAGE HERO BANNER
   ────────────────────────────────────────────────────────────────────────── */
.page-hero {
  padding-top:    calc(var(--navbar-h) + clamp(4rem, 8vw, 7rem));
  padding-bottom: clamp(3rem, 6vw, 6rem);
  text-align:     center;
  background:
    radial-gradient(ellipse 70% 60% at 50% 0%,   rgba(0, 243, 255, 0.09) 0%, transparent 65%),
    radial-gradient(ellipse 40% 30% at 80% 80%,  rgba(124, 58, 237, 0.07) 0%, transparent 60%),
    var(--dark-bg);
  border-bottom:  1px solid rgba(255, 255, 255, 0.04);
  position:       relative;
  overflow:       hidden;
}

.page-hero h1 { margin-bottom: var(--space-5); }

.page-hero p.lead {
  max-width:    700px;
  margin-left:  auto;
  margin-right: auto;
}

/* ──────────────────────────────────────────────────────────────────────────
   SITE FOOTER
   ────────────────────────────────────────────────────────────────────────── */
.site-footer {
  background:   var(--dark-surface);
  border-top:   1px solid rgba(255, 255, 255, 0.05);
  padding-top:  var(--space-20);
  position:     relative;
  overflow:     hidden;
}

/* Subtle top glow line */
.site-footer::before {
  content:    '';
  position:   absolute;
  top:        0; left: 20%; right: 20%;
  height:     1px;
  background: linear-gradient(90deg, transparent, var(--primary), transparent);
  opacity:    0.3;
}

.footer-grid {
  display:               grid;
  grid-template-columns: 2.2fr 1fr 1fr 1fr;
  gap:                   var(--space-8);
  padding-bottom:        var(--space-12);
  border-bottom:         1px solid rgba(255, 255, 255, 0.05);
}

/* Brand column */
.footer-brand h3 {
  font-family:   var(--font-heading);
  font-size:     1.4rem;
  font-weight:   900;
  letter-spacing: 3px;
  color:         var(--text-white);
  margin-bottom: var(--space-4);
}

.footer-brand p {
  font-size:   var(--text-sm);
  line-height: 1.75;
}

/* Column titles */
.footer-col-title {
  font-family:    var(--font-heading);
  font-size:      var(--text-xs);
  font-weight:    700;
  text-transform: uppercase;
  letter-spacing: 2px;
  color:          var(--text-white);
  margin-bottom:  var(--space-5);
}

/* Links */
.footer-links {
  display:        flex;
  flex-direction: column;
  gap:            var(--space-3);
}

.footer-links a {
  font-size:  var(--text-sm);
  color:      var(--text-muted);
  transition: color var(--transition-base), padding-left var(--transition-base);
  display:    flex;
  align-items: center;
  gap:        var(--space-2);
}

.footer-links a::before {
  content:    '›';
  color:      var(--primary);
  opacity:    0;
  transition: opacity var(--transition-base);
}

.footer-links a:hover {
  color:        var(--primary);
  padding-left: var(--space-2);
}

.footer-links a:hover::before { opacity: 1; }

/* Footer Bottom Bar */
.footer-bottom {
  display:         flex;
  align-items:     center;
  justify-content: space-between;
  gap:             var(--space-4);
  padding:         var(--space-6) 0;
  font-size:       var(--text-xs);
  color:           var(--text-subtle);
}

.footer-bottom-links {
  display: flex;
  gap:     var(--space-6);
}

.footer-bottom-links a {
  color:  var(--text-subtle);
  font-size: var(--text-xs);
}

.footer-bottom-links a:hover { color: var(--primary); }

/* ──────────────────────────────────────────────────────────────────────────
   SERVICE DETAIL BLOCK (used in services.html)
   ────────────────────────────────────────────────────────────────────────── */
.service-detail-block {
  background:    var(--card-bg);
  border:        1px solid var(--card-border);
  border-radius: var(--radius-xl);
  overflow:      hidden;
  margin-bottom: var(--space-10);
  transition:    border-color var(--transition-base);
}

.service-detail-block:hover {
  border-color: rgba(0, 243, 255, 0.18);
}

.service-detail-header {
  display:       flex;
  align-items:   center;
  gap:           var(--space-6);
  padding:       var(--space-8) var(--space-10);
  background:    rgba(255, 255, 255, 0.02);
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

.service-detail-header .icon-box {
  width:     72px;
  height:    72px;
  font-size: 2rem;
}

.service-detail-header h3 { margin-bottom: var(--space-1); }

.service-detail-header .service-code {
  font-family:    var(--font-mono);
  font-size:      var(--text-xs);
  color:          var(--primary);
  letter-spacing: 2px;
}

.service-detail-body {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap:     var(--space-10);
  padding: var(--space-10);
  align-items: center;
}

.service-detail-body p {
  font-size:     var(--text-lg);
  color:         var(--text-main);
  margin-bottom: var(--space-6);
}

.service-feature-list {
  display:               grid;
  grid-template-columns: 1fr 1fr;
  gap:                   var(--space-3) var(--space-6);
}

.service-feature-item {
  display:     flex;
  align-items: flex-start;
  gap:         var(--space-3);
  font-size:   var(--text-sm);
  color:       var(--text-muted);
}

.service-feature-item::before {
  content:     '✓';
  color:       var(--primary);
  font-weight: 700;
  line-height: 1.6;
  flex-shrink: 0;
}

.service-detail-img {
  width:         100%;
  height:        280px;
  object-fit:    cover;
  border-radius: var(--radius-lg);
  border:        1px solid rgba(255, 255, 255, 0.06);
}

/* ──────────────────────────────────────────────────────────────────────────
   CONTACT PAGE LAYOUT
   ────────────────────────────────────────────────────────────────────────── */
.contact-layout {
  display:     grid;
  grid-template-columns: 1fr 1.3fr;
  gap:         var(--space-16);
  align-items: flex-start;
}

.contact-info-panel {
  background:    rgba(255, 255, 255, 0.02);
  border:        1px solid var(--glass-border);
  border-radius: var(--radius-xl);
  padding:       var(--space-10);
  position:      sticky;
  top:           calc(var(--navbar-h) + var(--space-8));
}

.contact-form-panel {
  background:    var(--card-bg);
  border:        1px solid var(--card-border);
  border-radius: var(--radius-xl);
  padding:       var(--space-10);
  position:      relative;
  overflow:      hidden;
}

/* Top accent bar on form panel */
.contact-form-panel::before {
  content:    '';
  position:   absolute;
  top:        0; left: 0; right: 0;
  height:     4px;
  background: linear-gradient(90deg, var(--primary), var(--secondary));
}

/* ──────────────────────────────────────────────────────────────────────────
   RESPONSIVE BREAKPOINTS
   ────────────────────────────────────────────────────────────────────────── */

/* ── Tablet: ≤ 1024px ── */
@media (max-width: 1024px) {
  .grid-4                    { grid-template-columns: repeat(2, 1fr); }
  .footer-grid               { grid-template-columns: 1fr 1fr; }
  .col-split-60-40,
  .col-split-50-50           { grid-template-columns: 1fr; gap: var(--space-10); }
  .service-detail-body       { grid-template-columns: 1fr; }
  .service-detail-img        { height: 220px; }
  .contact-layout            { grid-template-columns: 1fr; }
  .contact-info-panel        { position: static; }
}

/* ── Mobile: ≤ 768px ── */
@media (max-width: 768px) {
  .grid-2,
  .grid-3,
  .grid-4                    { grid-template-columns: 1fr; }

  .footer-grid               { grid-template-columns: 1fr; }
  .footer-bottom             { flex-direction: column; text-align: center; }
  .footer-bottom-links       { justify-content: center; }

  .nav-list                  { display: none; }
  .mobile-toggle             { display: flex; }

  /* Mobile nav menu */
  .nav-list.is-open {
    display:          flex;
    flex-direction:   column;
    position:         absolute;
    top:              100%; left: 0; right: 0;
    background:       rgba(5, 10, 20, 0.97);
    backdrop-filter:  blur(20px);
    -webkit-backdrop-filter: blur(20px);
    padding:          var(--space-6);
    gap:              var(--space-2);
    border-bottom:    1px solid rgba(255, 255, 255, 0.06);
    z-index:          var(--z-dropdown);
  }

  .nav-list.is-open .nav-link {
    padding: var(--space-3) var(--space-4);
    border-radius: var(--radius-md);
  }

  .service-detail-header     { flex-direction: column; text-align: center; padding: var(--space-6); }
  .service-detail-body       { padding: var(--space-6); gap: var(--space-8); }
  .service-feature-list      { grid-template-columns: 1fr; }

  .article-hero-img          { height: 240px; }
}

/* ── Small Mobile: ≤ 480px ── */
@media (max-width: 480px) {
  .contact-form-panel,
  .contact-info-panel        { padding: var(--space-6); }
  .service-detail-header     { padding: var(--space-5); }
  .service-detail-body       { padding: var(--space-5); }
}