/* =========================
   Global Variables & Base
   ========================= */
:root {
  --brand: #1f8b4c;
  --brand-light: #34c77b;
  --text-dark: #333;
  --transition: all 0.3s ease;
  --shadow-hover: 0 1rem 2rem rgba(0,0,0,0.08);
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

body {
  font-family: "Noto Sans Bengali", system-ui, -apple-system, "Segoe UI", Roboto, Arial, sans-serif;
  color: var(--text-dark);
  margin: 0;
}

.brand-text {
  letter-spacing: 0.5px;
}

/* =========================
   Premium Navbar Styling
   ========================= */
@import url('https://fonts.googleapis.com/css2?family=Kalpurush&display=swap');

:root {
    --brand: #1f8b4c;
    --brand-light: #34c77b;
    --text-dark: #333;
    --transition: all 0.35s ease;
    --shadow-hover: 0 4px 12px rgba(0,0,0,0.08);
}

.navbar {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(12px);
    box-shadow: 0 4px 15px rgba(0,0,0,0.05);
    transition: var(--transition);
    z-index: 1000;
    font-family: 'Kalpurush', sans-serif;
}

.navbar .nav-link {
    font-weight: 600;
    position: relative;
    padding: 0.5rem 1rem;
    color: var(--text-dark);
    transition: color 0.3s ease, transform 0.3s ease;
}

.navbar .nav-link::after {
    content: "";
    position: absolute;
    bottom: -4px;
    left: 50%;
    width: 0%;
    height: 2px;
    background: var(--brand);
    transition: width 0.35s ease, left 0.35s ease;
    transform: translateX(-50%);
}

.navbar .nav-link:hover::after,
.navbar .nav-link.active::after {
    width: 60%; /* underline width on hover/active */
}

.navbar .nav-link:hover {
    color: var(--brand);
    transform: translateY(-2px);
}

/* Dropdown menu */
.navbar .dropdown-menu {
    border-radius: 10px;
    border: none;
    box-shadow: 0 6px 25px rgba(0,0,0,0.1);
    padding: 0.5rem 0;
    transition: transform 0.35s ease, opacity 0.35s ease;
    opacity: 0;
    transform: translateY(10px);
}

.navbar .dropdown.show .dropdown-menu {
    opacity: 1;
    transform: translateY(0);
}

.navbar .dropdown-item {
    font-weight: 500;
    padding: 0.5rem 1.5rem;
    transition: all 0.3s ease;
    border-radius: 6px;
}

.navbar .dropdown-item:hover {
    background: var(--brand-light);
    color: #fff;
    transform: translateX(4px);
}

/* Language switch button */
.lang-switch .btn {
    font-weight: 600;
    border-radius: 30px;
    padding: 0.35rem 1rem;
    transition: all 0.3s ease;
    background: transparent;
    border: 2px solid var(--brand);
    color: var(--brand);
}

.lang-switch .btn:hover {
    background: var(--brand);
    color: #fff;
    box-shadow: var(--shadow-hover);
    transform: translateY(-2px);
}

/* Responsive adjustments */
@media (max-width: 768px) {
    .navbar .nav-link {
        padding: 0.5rem 0.75rem;
        font-size: 15px;
    }
    .navbar .dropdown-menu {
        border-radius: 0.5rem;
    }
}


/* =========================
   Hero Section
   ========================= */
.hero {
  min-height: 82vh;
  display: grid;
  align-items: center;
  position: relative;
}

.hero-slider,
.hero-slide { position: absolute; inset: 0; }

.hero-slide {
  opacity: 0;
  transform: scale(1.05);
  transition: opacity 1s ease-in-out, transform 1s ease-in-out;
}

.hero-slide.active {
  opacity: 1;
  transform: scale(1);
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, rgba(0,0,0,.65) 0%, rgba(0,0,0,.35) 45%, rgba(0,0,0,0) 100%);
}

.hero-title {
  font-weight: 800;
  color: #fff;
  text-shadow: 0 4px 30px rgba(0,0,0,.5);
}

.hero-content {
  position: relative;
  z-index: 10;
  padding-left: 2rem;
}

@media (max-width: 768px) {
  .hero-content { padding-left:1rem; padding-right:1rem; }
  .hero-overlay {
    background: linear-gradient(90deg, rgba(0,0,0,.5) 0%, rgba(0,0,0,.25) 45%, rgba(0,0,0,0) 100%);
  }
}

.typing { border-right: 3px solid #fff; white-space: nowrap; overflow: hidden; }
.typing.done { border-right: none; }

.fade-up {
  opacity: 0;
  transform: translateY(20px);
  transition: all 0.6s ease-out;
}
.fade-up.visible {
  opacity: 1;
  transform: translateY(0);
}



/* =========================
   Animations
   ========================= */
.animate-down {
  animation: slideDown 0.8s ease both;
}

.animate-fade {
  animation: fadeIn 1.2s ease both 0.1s;
}

@keyframes slideDown {
  from { opacity: 0; transform: translateY(-10px); }
  to { opacity: 1; transform: none; }
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

/* =========================
   Hover Effects
   ========================= */
.hover-lift {
  transition: var(--transition);
}

.hover-lift:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
}

/* =========================
   Floating WhatsApp Button
   ========================= */
.float-whatsapp {
  position: fixed;
  right: 18px;
  bottom: 18px;
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: #25D366;
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 10px 20px rgba(0,0,0,.18);
  z-index: 9999;
  font-size: 28px;
  transition: opacity 0.2s ease;
}

.float-whatsapp:hover {
  opacity: 0.9;
}

/* =========================
   Service Cards
   ========================= */
.service-card {
  background: linear-gradient(135deg, #fff, #f6fff9);
  transition: var(--transition);
}

.service-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-hover);
}

.icon-box {
  width: 60px;
  height: 60px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--brand), var(--brand-light));
  color: #fff;
  font-size: 28px;
  box-shadow: 0 4px 10px rgba(0,0,0,0.1);
}

/* =========================
   Fade-up Scroll Animation
   ========================= */
.fade-up {
  opacity: 0;
  transform: translateY(20px);
  transition: all 0.6s ease-out;
}

.fade-up.visible {
  opacity: 1;
  transform: translateY(0);
}

/* =========================
   Premium Gallery
   ========================= */
.gallery-container {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 18px;
}

.gallery-item {
  position: relative;
  overflow: hidden;
  border-radius: 8px;
  box-shadow: 0 4px 15px rgba(0,0,0,0.08);
  transition: transform 0.3s ease;
}

.gallery-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 0.4s ease;
}

.gallery-item:hover img {
  transform: scale(1.05);
}

.gallery-item::after {
  content: "\f002";
  font-family: "Font Awesome 5 Free";
  font-weight: 900;
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%) scale(0.8);
  color: white;
  font-size: 24px;
  opacity: 0;
  transition: var(--transition);
}

.gallery-item:hover::after {
  opacity: 1;
  transform: translate(-50%, -50%) scale(1);
}