/* ============================================
   Bedigital.pk — Layout CSS
   Grid, Sections, Responsive Breakpoints
   ============================================ */

/* --- Navigation --- */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: rgba(246, 248, 251, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--mist);
  height: var(--nav-height);
}

.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.nav__logo {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.5rem;
  color: var(--ink);
}

.nav__logo img {
  height: 28px;
  width: auto;
  object-fit: contain;
}

.nav__logo span {
  color: var(--brand-blue);
}

.nav__links {
  display: flex;
  align-items: center;
  gap: var(--space-xl);
}

.nav__link {
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--ink);
  opacity: 0.7;
  transition: opacity var(--transition-fast);
}

.nav__link:hover,
.nav__link--active {
  opacity: 1;
  color: var(--brand-blue);
}

.nav__cta {
  margin-left: var(--space-md);
}

.nav__toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  width: 28px;
  padding: 4px 0;
}

.nav__toggle span {
  display: block;
  width: 100%;
  height: 2px;
  background-color: var(--ink);
  border-radius: 2px;
  transition: transform var(--transition-base);
}

/* --- Sections --- */
.section {
  padding: var(--space-4xl) 0;
}

.section--dark {
  background-color: var(--navy-deep);
  color: white;
}

.section--dark .particle-canvas {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 0;
}

.section--dark > * {
  position: relative;
  z-index: 1;
}

.section--bg {
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  position: relative;
}

.section--bg::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(rgba(14, 27, 46, 0.85), rgba(11, 18, 32, 0.9));
  z-index: 0;
}

.section--bg > * {
  position: relative;
  z-index: 1;
}

.section--dark h2,
.section--dark h3 {
  color: white;
}

.section--dark p {
  color: white;
  opacity: 0.8;
}

.section__header {
  text-align: center;
  max-width: 640px;
  margin: 0 auto var(--space-3xl);
}

.section__eyebrow {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--brand-blue);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: var(--space-md);
}

.section__divider {
  width: 48px;
  height: 4px;
  background-color: var(--brand-blue);
  border: none;
  margin: var(--space-md) auto;
}

/* --- Two-Column Layout (Alternating) --- */
.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-3xl);
  align-items: center;
}

.split--reverse {
  direction: rtl;
}

.split--reverse > * {
  direction: ltr;
}

.split__content {
  max-width: 520px;
}

.split__visual {
  display: flex;
  justify-content: center;
  align-items: center;
}

/* --- Grid Layouts --- */
.grid {
  display: grid;
  gap: var(--space-xl);
}

.grid--2 {
  grid-template-columns: repeat(2, 1fr);
}

.grid--3 {
  grid-template-columns: repeat(3, 1fr);
}

.grid--4 {
  grid-template-columns: repeat(4, 1fr);
}

/* --- Footer --- */
.footer {
  background-color: var(--ink);
  color: white;
  padding: var(--space-3xl) 0 0;
}

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

.footer__brand p {
  color: white;
  opacity: 0.7;
  margin-top: var(--space-md);
}

.footer__heading {
  font-family: var(--font-display);
  font-size: 0.875rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: var(--space-lg);
  color: white;
}

.footer__link {
  display: block;
  color: white;
  opacity: 0.6;
  font-size: 0.9375rem;
  margin-bottom: var(--space-sm);
  transition: opacity var(--transition-fast);
}

.footer__link:hover {
  opacity: 1;
  color: var(--sky);
}

.footer__bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: var(--space-xl);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.footer__bar {
  background-color: var(--brand-blue);
  color: white;
  text-align: center;
  padding: var(--space-md) 0;
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  font-weight: 500;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  margin-top: var(--space-xl);
}

/* --- Responsive: Tablet --- */
@media (max-width: 1200px) {
  .split {
    gap: var(--space-xl);
  }

  .grid--4 {
    grid-template-columns: repeat(2, 1fr);
  }

  .footer__grid {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-xl);
  }
}

/* --- Responsive: Mobile --- */
@media (max-width: 768px) {
  :root {
    --nav-height: 64px;
  }

  .container {
    padding: 0 var(--space-lg);
  }

  .section {
    padding: var(--space-3xl) 0;
  }

  .nav__links {
    position: fixed;
    top: var(--nav-height);
    left: 0;
    right: 0;
    bottom: 0;
    flex-direction: column;
    background-color: var(--paper);
    padding: var(--space-xl);
    gap: var(--space-lg);
    transform: translateX(100%);
    transition: transform var(--transition-base);
    z-index: 99;
  }

  .nav__links--open {
    transform: translateX(0);
  }

  .nav__toggle {
    display: flex;
  }

  .split {
    grid-template-columns: 1fr;
    gap: var(--space-xl);
  }

  .split--reverse {
    direction: ltr;
  }

  .split__content {
    max-width: 100%;
    text-align: center;
  }

  .grid--2,
  .grid--3,
  .grid--4 {
    grid-template-columns: 1fr;
  }

  .footer__grid {
    grid-template-columns: 1fr;
  }

  .footer__bottom {
    flex-direction: column;
    gap: var(--space-md);
    text-align: center;
  }

  /* Form responsive */
  .form-row--grid {
    grid-template-columns: 1fr;
  }

  /* Strip full-bleed fix */
  .strip-fullbleed {
    margin-left: 0;
    margin-right: 0;
    padding-left: var(--space-lg);
    padding-right: var(--space-lg);
  }
}

/* --- Responsive: Tablet --- */
@media (max-width: 1200px) {
  .split {
    gap: var(--space-xl);
  }

  .grid--4 {
    grid-template-columns: repeat(2, 1fr);
  }

  .footer__grid {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-xl);
  }

  .service-list {
    grid-template-columns: 1fr;
  }
}