/* =====================================================
   LONTARA — LAYOUT (Header, Footer, Grid, Nav)
===================================================== */

/* =========================
   CONTAINER & SECTIONS
========================= */

.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 28px;
}

.section {
  padding: 110px 0;
}

.section-light {
  background: var(--bg-light);
}

.section-title {
  font-size: 2.1rem;
  margin-bottom: 26px;
}

.section-subtitle {
  color: var(--text-muted);
  margin-bottom: 50px;
  max-width: 640px;
}

/* =========================
   GRID SYSTEM
========================= */

.grid-4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 28px;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

@media (max-width: 1100px) {
  .grid-4,
  .grid-3 {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .grid-4,
  .grid-3 {
    grid-template-columns: 1fr;
  }
  .section {
    padding: 80px 0;
  }
}

/* =========================
   HEADER & NAVIGATION
========================= */

.header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
  transition: var(--transition);
}

.header.shrink {
  background: rgba(255, 255, 255, 0.95);
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.05);
}

.nav-container {
  height: 78px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  transition: var(--transition);
}

.header.shrink .nav-container {
  height: 64px;
}

.logo img {
  height: 38px;
  width: auto;
}

.nav {
  display: flex;
  align-items: center;
  gap: 30px;
}

.nav-item {
  position: relative;
}

.nav a {
  font-size: 0.95rem;
  font-weight: 500;
  position: relative;
  transition: var(--transition);
}

.nav-link-dropdown {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.arrow-icon {
  transition: transform 0.3s ease;
}

.nav > .nav-item > a::after,
.nav > a.nav-cta::after {
  content: "";
  position: absolute;
  width: 0%;
  height: 2px;
  left: 0;
  bottom: -6px;
  background: var(--accent);
  transition: var(--transition);
}

.nav > .nav-item > a:not(.nav-link-dropdown):hover::after,
.nav > .nav-item > a:not(.nav-link-dropdown).active::after {
  width: 100%;
}

.nav-cta {
  background: var(--primary);
  color: white;
  padding: 8px 18px;
  border-radius: 8px;
}

.nav-cta:hover {
  background: var(--primary-dark);
}
.nav-cta::after {
  display: none;
}

/* =========================
   DROPDOWN (DESKTOP)
========================= */

@media (min-width: 769px) {
  .has-dropdown:hover .dropdown {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
  }
  .has-dropdown:hover .arrow-icon {
    transform: rotate(180deg);
  }

  .dropdown {
    position: absolute;
    top: 38px;
    left: 0;
    background: var(--bg-light);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 18px 22px;
    min-width: 220px;
    box-shadow: 0 12px 30px rgba(0, 0, 0, 0.05);
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: var(--transition);
  }
  .dropdown a {
    display: block;
    padding: 8px 0;
    font-size: 0.9rem;
    color: var(--text-muted);
  }
  .dropdown a:hover {
    color: var(--primary);
    transform: translateX(5px);
  }
}

.dropdown a::after {
  content: none !important;
  display: none !important;
  width: 0 !important;
}

/* =========================
   MOBILE NAVIGATION
========================= */

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 6px;
  cursor: pointer;
  background: transparent;
  border: none;
  padding: 0;
}

.nav-toggle span {
  width: 24px;
  height: 2px;
  background: var(--text-main);
  transition: var(--transition);
}
.nav-toggle.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}
.nav-toggle.active span:nth-child(2) {
  opacity: 0;
}
.nav-toggle.active span:nth-child(3) {
  transform: rotate(-45deg) translate(6px, -6px);
}

@media (max-width: 768px) {
  .nav {
    position: fixed;
    top: 0;
    right: -100%;
    width: 280px;
    height: 100vh;
    background: var(--bg-light);
    flex-direction: column;
    padding: 120px 30px;
    gap: 28px;
    box-shadow: -10px 0 30px rgba(0, 0, 0, 0.05);
    transition: 0.4s ease;
    overflow-y: auto;
    align-items: center;
    text-align: center;
  }
  .nav.show {
    right: 0;
  }
  .nav-toggle {
    display: flex;
  }
  .nav-item {
    width: 100%;
  }
  .nav-link-dropdown {
    display: flex;
    justify-content: center;
    align-items: center;
    width: 100%;
  }

  .dropdown {
    position: static;
    max-height: 0;
    overflow: hidden;
    opacity: 0;
    visibility: hidden;
    border: none;
    box-shadow: none;
    margin-top: 0;
    padding: 0;
    border-left: none;
    width: 100%;
    transition: all 0.4s ease-in-out;
  }
  .dropdown a {
    display: block;
    padding: 10px 0;
    font-size: 0.9rem;
    color: var(--text-muted);
    text-align: center;
  }
  .has-dropdown.active .dropdown {
    max-height: 300px;
    opacity: 1;
    visibility: visible;
    margin-top: 15px;
  }
  .has-dropdown.active .arrow-icon {
    transform: rotate(180deg);
  }
}

.nav-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.2);
  backdrop-filter: blur(2px);
  opacity: 0;
  visibility: hidden;
  transition: var(--transition);
}
.nav-overlay.active {
  opacity: 1;
  visibility: visible;
}

/* =========================
   FOOTER
========================= */

.footer {
  background: var(--bg-light);
  border-top: 1px solid var(--border);
  padding: 50px 0;
}
.footer-container {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 20px;
}