:root {
      --bg-dark: #030712;
      --bg-elevated: #020617;
      --brand-gold: #fbbf24;
      --brand-soft-gold: #facc15;
      --brand-emerald: #10b981;
      --brand-sky: #0ea5e9;
      --text-main: #e5e7eb;
      --text-muted: #9ca3af;
      --border-soft: rgba(148, 163, 184, 0.35);
      --radius-xl: 24px;
      --shadow-soft: 0 24px 60px rgba(15, 23, 42, 0.6);
      --transition-fast: 200ms ease;
    }

    * {
      box-sizing: border-box;
      margin: 0;
      padding: 0;
    }

    html {
      scroll-behavior: smooth;
    }

    body {
      font-family: "Hind Siliguri", system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
      background: radial-gradient(circle at top, #0f172a 0, #020617 45%, #000 100%);
      color: var(--text-main);
      line-height: 1.6;
      overflow-x: hidden;
    }

    img {
      max-width: 100%;
      display: block;
    }

    a {
      color: inherit;
      text-decoration: none;
    }

    /* Layout utility */
    .container {
      width: 100%;
      max-width: 1200px;
      margin: 0 auto;
      padding: 0 1.5rem;
    }

    /* Navbar */
    header {
      position: fixed;
      inset-inline: 0;
      top: 0;
      z-index: 50;
      backdrop-filter: blur(18px);
      background: radial-gradient(circle at top left, rgba(248, 250, 252, 0.06), transparent 55%);
      border-bottom: 1px solid rgba(148, 163, 184, 0.35);
    }

    .nav-inner {
      display: flex;
      align-items: center;
      justify-content: space-between;
      height: 70px;
    }

    .brand {
      display: flex;
      align-items: center;
      gap: 0.6rem;
      cursor: pointer;
    }

    .brand-mark {
      width: 38px;
      height: 38px;
      border-radius: 999px;
      background: conic-gradient(from 130deg, #fbbf24, #0ea5e9, #22c55e, #fbbf24);
      box-shadow: 0 0 28px rgba(251, 191, 36, 0.6);
      display: flex;
      align-items: center;
      justify-content: center;
      color: #020617;
      font-weight: 800;
      font-size: 0.95rem;
    }

    .brand-text {
      display: flex;
      flex-direction: column;
    }

    .brand-text span:first-child {
      font-weight: 700;
      color: #000;
      letter-spacing: 0.03em;
      font-size: 1rem;
    }

    .brand-text span:last-child {
      font-size: 0.78rem;
      text-transform: uppercase;
      color: var(--text-muted);
    }

    nav ul {
      list-style: none;
      display: flex;
      align-items: center;
      gap: 1.5rem;
      font-size: 0.9rem;
    }

    nav a {
      position: relative;
      padding-block: 0.25rem;
    }

    nav a::after {
      content: "";
      position: absolute;
      left: 0;
      bottom: 0;
      width: 0;
      height: 2px;
      background: linear-gradient(90deg, var(--brand-gold), var(--brand-sky));
      transition: width var(--transition-fast);
    }

    nav a:hover::after,
    nav a.active::after {
      width: 100%;
    }

    .nav-cta {
      padding: 0.45rem 1.1rem;
      border-radius: 999px;
      border: 1px solid rgba(251, 191, 36, 0.8);
      background: radial-gradient(circle at 10% 20%, rgba(251, 191, 36, 0.25), transparent 60%);
      display: flex;
      align-items: center;
      gap: 0.45rem;
      font-size: 0.85rem;
      cursor: pointer;
      transition: transform var(--transition-fast), box-shadow var(--transition-fast), border-color var(--transition-fast);
      box-shadow: 0 0 18px rgba(251, 191, 36, 0.45);
    }

    .nav-cta:hover {
      transform: translateY(-1px);
      border-color: #facc15;
      box-shadow: 0 0 24px rgba(250, 204, 21, 0.7);
    }

    .nav-toggle {
      display: none;
      background: none;
      border: none;
      color: var(--text-main);
      font-size: 1.4rem;
      cursor: pointer;
    }

    @media (max-width: 768px) {
      nav {
        position: fixed;
        inset-inline: 0;
        top: 70px;
        background: rgba(15, 23, 42, 0.98);
        backdrop-filter: blur(18px);
        max-height: 0;
        overflow: hidden;
        transition: max-height 220ms ease;
        border-bottom: 1px solid transparent;
      }

      nav.open {
        max-height: 260px;
        border-bottom-color: rgba(148, 163, 184, 0.35);
      }

      nav ul {
        flex-direction: column;
        align-items: flex-start;
        padding: 0.75rem 1.5rem 1rem;
      }

      .nav-cta {
        width: 100%;
        justify-content: center;
      }

      .nav-toggle {
        display: block;
      }
    }
    #hero-margin {
      margin-top: -83px;
    }

    /* Hero */
    .hero {
      position: relative;
      padding-top: 120px;
    }

      .hero-innerF {
            min-height: calc(100vh - 120px);
            display: flex;
            justify-content: center;
            align-items: center;
        }
      .hero-visualK img {
            width: 110%;
            height: auto;
            border-radius: 12px;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);/* optional: to make it look better */
        }

    .hero-inner {
      min-height: calc(100vh - 120px);
      display: grid;
      grid-template-columns: minmax(0, 1.3fr) minmax(0, 1fr);
      align-items: center;
      gap: 3rem;
    }
 
  .hero-innerimg {
      min-height: calc(100vh - 120px);
      display: grid;
      grid-template-columns: minmax(0, 1.3fr) minmax(0, 1fr);
      align-items: center;
      gap: 3rem;
    }

    @media (max-width: 960px) {
      .hero-inner {
        grid-template-columns: 1fr;
        padding-bottom: 4rem;
      }
    }

    .hero-badge {
      display: inline-flex;
      align-items: center;
      gap: 0.4rem;
      padding: 0.25rem 0.65rem;
      border-radius: 999px;
      background: rgba(15, 23, 42, 0.8);
      border: 1px solid rgba(148, 163, 184, 0.6);
      font-size: 0.75rem;
      margin-bottom: 0.9rem;
    }

    .hero-badge-dot {
      width: 8px;
      height: 8px;
      border-radius: 999px;
      background: #22c55e;
      box-shadow: 0 0 14px rgba(34, 197, 94, 0.9);
    }

    .hero-title {
      font-size: clamp(2.2rem, 3vw + 1.4rem, 3.4rem);
      line-height: 1.1;
      letter-spacing: 0.02em;
      margin-bottom: 1rem;
    }

    .hero-highlight {
      background: linear-gradient(120deg, #facc15, #f97316, #facc15);
      -webkit-background-clip: text;
      color: transparent;
    }

    .hero-subtitle {
      max-width: 32rem;
      color: var(--text-muted);
      font-size: 0.98rem;
    }

    .hero-actions {
      margin-top: 1.7rem;
      display: flex;
      flex-wrap: wrap;
      gap: 0.8rem;
    }

    .btn-primary,
    .btn-ghost {
      padding: 0.7rem 1.5rem;
      border-radius: 999px;
      font-size: 0.95rem;
      cursor: pointer;
      border: 1px solid transparent;
      display: inline-flex;
      align-items: center;
      gap: 0.4rem;
      transition: transform var(--transition-fast), box-shadow var(--transition-fast), background var(--transition-fast), border-color var(--transition-fast), color var(--transition-fast);
    }

    .btn-primary {
      background: radial-gradient(circle at 0% 0%, #facc15, #f97316);
      color: #111827;
      box-shadow: 0 18px 45px rgba(251, 191, 36, 0.5);
      font-weight: 600;
    }

    .btn-primary:hover {
      transform: translateY(-1px);
      box-shadow: 0 24px 60px rgba(249, 115, 22, 0.7);
    }

    .btn-ghost {
      border-color: rgba(148, 163, 184, 0.7);
      background: rgba(15, 23, 42, 0.6);
      color: var(--text-main);
    }

    .btn-ghost:hover {
      background: rgba(15, 23, 42, 0.9);
      border-color: rgba(249, 250, 251, 0.8);
      transform: translateY(-1px);
    }

    .hero-meta {
      display: flex;
      flex-wrap: wrap;
      gap: 1.2rem;
      margin-top: 1.5rem;
      font-size: 0.82rem;
      color: var(--text-muted);
    }

    .hero-meta span strong {
      color: var(--brand-soft-gold);
      font-weight: 600;
    }

    /* Hero visual / parallax card */
    .hero-visual {
      position: relative;
      isolation: isolate;
    }

    .hero-orbit {
      position: absolute;
      inset: -40px -60px;
      background: radial-gradient(circle at 0 0, rgba(56, 189, 248, 0.22), transparent 55%),
                  radial-gradient(circle at 100% 100%, rgba(251, 191, 36, 0.18), transparent 55%);
      opacity: 0.7;
      filter: blur(4px);
      z-index: -2;
    }

    .hero-card {
      position: relative;
      padding: 1.8rem 1.6rem;
      border-radius: var(--radius-xl);
      background: radial-gradient(circle at top left, rgba(15, 23, 42, 0.9), #020617);
      border: 1px solid rgba(148, 163, 184, 0.65);
      box-shadow: var(--shadow-soft);
      overflow: hidden;
    }

    .hero-card::before {
      content: "";
      position: absolute;
      inset: -20%;
      background:
        radial-gradient(circle at 0 0, rgba(56, 189, 248, 0.18), transparent 55%),
        radial-gradient(circle at 100% 0, rgba(250, 204, 21, 0.1), transparent 55%);
      opacity: 0.8;
      z-index: -1;
    }

    .hero-card-header {
      display: flex;
      align-items: center;
      justify-content: space-between;
      margin-bottom: 1rem;
    }

    .hero-tag {
      padding: 0.25rem 0.7rem;
      border-radius: 999px;
      background: rgba(15, 23, 42, 0.85);
      border: 1px solid rgba(148, 163, 184, 0.7);
      font-size: 0.75rem;
      color: var(--text-muted);
    }

    .hero-stat {
      text-align: right;
      font-size: 0.75rem;
      color: var(--text-muted);
    }

    .hero-stat strong {
      display: block;
      font-size: 1.4rem;
      color: var(--brand-soft-gold);
      line-height: 1.1;
    }

    .hero-progress {
      margin-top: 1.2rem;
      font-size: 0.8rem;
      color: var(--text-muted);
    }

    .progress-bar {
      height: 6px;
      border-radius: 999px;
      background: rgba(31, 41, 55, 0.9);
      margin-top: 0.45rem;
      overflow: hidden;
    }

    .progress-fill {
      width: 68%;
      height: 100%;
      border-radius: inherit;
      background: linear-gradient(90deg, #facc15, #22c55e);
      box-shadow: 0 0 18px rgba(34, 197, 94, 0.7);
    }

    .hero-mini-grid {
      display: grid;
      grid-template-columns: repeat(2, minmax(0, 1fr));
      gap: 0.9rem;
      margin-top: 1.4rem;
      font-size: 0.8rem;
    }

    .hero-mini {
      padding: 0.7rem 0.8rem;
      border-radius: 14px;
      background: rgba(15, 23, 42, 0.85);
      border: 1px solid rgba(51, 65, 85, 0.9);
      display: flex;
      flex-direction: column;
      gap: 0.15rem;
    }

    .hero-mini strong {
      font-size: 1.05rem;
      color: #e5e7eb;
    }

    .hero-mini span {
      color: var(--text-muted);
    }

    .floating-badge {
      position: absolute;
      right: 4px;
      bottom: -12px;
      width: 110px;
      height: 110px;
      border-radius: 999px;
      background: conic-gradient(from 200deg, rgba(56, 189, 248, 0.8), rgba(250, 204, 21, 0.7), rgba(56, 189, 248, 0.8));
      display: flex;
      align-items: center;
      justify-content: center;
      box-shadow: 0 18px 40px rgba(8, 47, 73, 0.9);
      animation: float 5s ease-in-out infinite;
    }

    .floating-badge-inner {
      width: 80px;
      height: 80px;
      border-radius: inherit;
      background: radial-gradient(circle at 30% 0, #0f172a, #020617);
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: center;
      color: #e5e7eb;
      font-size: 0.7rem;
      text-align: center;
      gap: 0.15rem;
    }

    .floating-badge-inner strong {
      font-size: 1.4rem;
      color: #facc15;
    }

    @keyframes float {
      0%, 100% { transform: translateY(4px); }
      50% { transform: translateY(-8px); }
    }

    /* Generic section */
    section {
      padding: 4.5rem 0;
    }

    .section-heading {
      text-align: center;
      margin-bottom: 2.5rem;
    }

    .eyebrow {
      text-transform: uppercase;
      font-size: 0.75rem;
      letter-spacing: 0.18em;
      color: var(--text-muted);
      margin-bottom: 0.5rem;
    }

    .section-heading h2 {
      font-size: 1.8rem;
      margin-bottom: 0.4rem;
    }

    .section-heading p {
      max-width: 38rem;
      margin: 0 auto;
      font-size: 0.95rem;
      color: var(--text-muted);
    }

    /* Cards */
    .grid {
      display: grid;
      gap: 1.7rem;
    }

    .grid-3 {
      grid-template-columns: repeat(3, minmax(0, 1fr));
    }

    .grid-2 {
      grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    @media (max-width: 960px) {
      .grid-3,
      .grid-2 {
        grid-template-columns: 1fr;
      }
    }

    .card {
      border-radius: var(--radius-xl);
      border: 1px solid var(--border-soft);
      background: radial-gradient(circle at top, rgba(15, 23, 42, 0.95), #020617);
      box-shadow: 0 16px 40px rgba(15, 23, 42, 0.75);
      padding: 1.4rem 1.5rem;
      position: relative;
      overflow: hidden;
      transition: transform 200ms ease, box-shadow 200ms ease, border-color 200ms ease;
    }

    .card::before {
      content: "";
      position: absolute;
      inset: -20%;
      background: radial-gradient(circle at 0% 0%, rgba(56, 189, 248, 0.16), transparent 55%);
      opacity: 0;
      transition: opacity 220ms ease;
      z-index: -1;
    }

    .card:hover {
      transform: translateY(-4px);
      border-color: rgba(248, 250, 252, 0.6);
      box-shadow: 0 22px 60px rgba(15, 23, 42, 0.95);
    }

    .card:hover::before {
      opacity: 1;
    }

    .card-icon {
      width: 36px;
      height: 36px;
      border-radius: 999px;
      background: radial-gradient(circle at 30% 0, rgba(251, 191, 36, 0.7), rgba(56, 189, 248, 0.6));
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.2rem;
      margin-bottom: 0.9rem;
    }

    .card h3 {
      font-size: 1.1rem;
      margin-bottom: 0.4rem;
    }

    .card p {
      font-size: 0.9rem;
      color: var(--text-muted);
    }

    /* Parallax background section (projects) */
    .projects {
      position: relative;
      background:
        radial-gradient(circle at top, rgba(30, 64, 175, 0.45), transparent 60%),
        radial-gradient(circle at bottom, rgba(6, 95, 70, 0.5), transparent 60%);
      border-block: 1px solid rgba(148, 163, 184, 0.5);
    }

    .projects-parallax-layer {
      position: absolute;
      inset: 0;
      background-image: radial-gradient(circle at 20% 20%, rgba(248, 250, 252, 0.05), transparent 55%),
                       radial-gradient(circle at 80% 60%, rgba(248, 250, 252, 0.06), transparent 55%);
      opacity: 0.9;
      pointer-events: none;
    }

    .projects-inner {
      position: relative;
      z-index: 1;
    }

    /* Counters */
    .stats-row {
      display: flex;
      flex-wrap: wrap;
      gap: 1.2rem;
      justify-content: center;
      margin-top: 1.5rem;
    }

    .stat {
      min-width: 140px;
      padding: 1.1rem 1.3rem;
      border-radius: 1.3rem;
      border: 1px solid rgba(148, 163, 184, 0.55);
      background: rgba(15, 23, 42, 0.9);
      text-align: center;
      box-shadow: 0 16px 40px rgba(15, 23, 42, 0.9);
    }

    .stat-number {
      font-size: 1.6rem;
      font-weight: 700;
      color: var(--brand-soft-gold);
      line-height: 1;
      margin-bottom: 0.25rem;
    }

    .stat-label {
      font-size: 0.8rem;
      color: var(--text-muted);
    }

    /* Donation section */
    .donation-layout {
      display: grid;
      grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
      gap: 2.2rem;
      align-items: start;
    }

    @media (max-width: 960px) {
      .donation-layout {
        grid-template-columns: 1fr;
      }
    }

    .amount-pills {
      display: flex;
      flex-wrap: wrap;
      gap: 0.6rem;
      margin-block: 1.1rem 0.7rem;
    }

    .amount-pill {
      padding: 0.5rem 0.9rem;
      border-radius: 999px;
      border: 1px solid rgba(148, 163, 184, 0.7);
      font-size: 0.85rem;
      cursor: pointer;
      background: rgba(15, 23, 42, 0.7);
      transition: background 180ms ease, border-color 180ms ease, color 180ms ease, transform 180ms ease;
    }

    .amount-pill.active,
    .amount-pill:hover {
      background: radial-gradient(circle at 0 0, #facc15, #f97316);
      border-color: transparent;
      color: #111827;
      transform: translateY(-1px);
    }

    .donation-input-row {
      margin-bottom: 1rem;
    }

    .donation-input-row label {
      font-size: 0.82rem;
      display: block;
      margin-bottom: 0.24rem;
      color: var(--text-muted);
    }

    .donation-input-row input,
    .donation-input-row select {
      width: 100%;
      padding: 0.55rem 0.65rem;
      border-radius: 12px;
      border: 1px solid rgba(148, 163, 184, 0.65);
      background: rgba(15, 23, 42, 0.9);
      color: var(--text-main);
      font-size: 0.85rem;
      outline: none;
    }

    .donation-input-row input:focus,
    .donation-input-row select:focus {
      border-color: var(--brand-sky);
      box-shadow: 0 0 0 1px rgba(56, 189, 248, 0.5);
    }

    .donation-note {
      font-size: 0.8rem;
      color: var(--text-muted);
      margin-top: 0.4rem;
    }

    .donation-summary {
      padding: 1.1rem 1.2rem;
      border-radius: 18px;
      border: 1px dashed rgba(148, 163, 184, 0.7);
      background: radial-gradient(circle at top, rgba(15, 23, 42, 0.98), rgba(15, 23, 42, 0.96));
      font-size: 0.86rem;
      margin-top: 0.6rem;
    }

    .donation-summary-row {
      display: flex;
      justify-content: space-between;
      margin-bottom: 0.35rem;
    }

    .donation-summary-row strong {
      color: var(--brand-soft-gold);
    }

    /* Gallery */
    .gallery-grid {
      display: grid;
      grid-template-columns: repeat(4, minmax(0, 1fr));
      gap: 0.7rem;
    }

    @media (max-width: 960px) {
      .gallery-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
      }
    }

    .gallery-item {
      position: relative;
      border-radius: 18px;
      overflow: hidden;
      border: 1px solid rgba(148, 163, 184, 0.5);
      background: #020617;
      cursor: pointer;
      aspect-ratio: 4 / 3;
    }

    .gallery-item::before {
      content: "";
      position: absolute;
      inset: 0;
      background: radial-gradient(circle at center, rgba(15, 23, 42, 0.2), transparent 70%);
      transition: background 200ms ease, transform 200ms ease;
    }

    .gallery-img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      filter: grayscale(15%) contrast(1.05);
      transform: scale(1.05);
      transition: transform 220ms ease, filter 220ms ease;
    }

    .gallery-caption {
      position: absolute;
      left: 10px;
      bottom: 8px;
      right: 10px;
      font-size: 0.78rem;
      color: #e5e7eb;
      padding: 0.35rem 0.5rem;
      border-radius: 999px;
      background: linear-gradient(to right, rgba(15, 23, 42, 0.9), rgba(15, 23, 42, 0.75));
      display: flex;
      justify-content: space-between;
      align-items: center;
    }

    .gallery-item:hover::before {
      background: radial-gradient(circle at center, rgba(15, 23, 42, 0.65), transparent 70%);
      transform: scale(1.02);
    }

    .gallery-item:hover .gallery-img {
      transform: scale(1.08);
      filter: grayscale(0) contrast(1.08);
    }

    /* Testimonials */
    .testimonials-wrapper {
      display: grid;
      grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
      gap: 2.4rem;
      align-items: center;
    }

    @media (max-width: 960px) {
      .testimonials-wrapper {
        grid-template-columns: 1fr;
      }
    }

    .testimonial-quote {
      font-size: 1rem;
      color: var(--text-main);
      margin-bottom: 0.8rem;
    }

    .testimonial-meta {
      font-size: 0.8rem;
      color: var(--text-muted);
    }

    .testimonial-card {
      padding: 1.3rem 1.4rem;
      border-radius: 20px;
      border: 1px solid rgba(148, 163, 184, 0.7);
      background: radial-gradient(circle at 0 0, rgba(56, 189, 248, 0.12), rgba(15, 23, 42, 0.98));
      margin-bottom: 0.9rem;
      position: relative;
      overflow: hidden;
    }

    .testimonial-card::before {
      content: "“";
      position: absolute;
      top: -24px;
      right: 16px;
      font-size: 6rem;
      color: rgba(15, 23, 42, 0.9);
    }

    .testimonial-author {
      font-weight: 600;
      margin-top: 0.4rem;
    }

    .testimonial-role {
      font-size: 0.78rem;
      color: var(--text-muted);
    }

    .testimonial-dots {
      display: flex;
      gap: 0.3rem;
      margin-top: 0.7rem;
    }

    .testimonial-dot {
      width: 8px;
      height: 8px;
      border-radius: 999px;
      background: rgba(148, 163, 184, 0.6);
    }

    .testimonial-dot.active {
      background: var(--brand-soft-gold);
    }

    /* Footer */
   
footer {
      border-top: 1px solid rgba(148, 163, 184, 0.5);
      padding: 2.6rem 0 2rem;
      background: radial-gradient(circle at top, rgba(15, 23, 42, 0.96), #020617 80%);
      margin-top: 2.4rem;
    }
    .footer-layout {
      display: grid;
      grid-template-columns: minmax(0, 1.3fr) repeat(2, minmax(0, 0.8fr));
      gap: 2.2rem;
      font-size: 0.84rem;
    }

    @media (max-width: 960px) {
      .footer-layout {
        grid-template-columns: 1fr;
      }
    }

    .footer-heading {
      font-size: 0.95rem;
      font-weight: 600;
      margin-bottom: 0.6rem;
    }

    .footer-list {
      list-style: none;
    }

    .footer-list li + li {
      margin-top: 0.3rem;
    }

    .footer-list a {
      color: var(--text-muted);
    }

    .footer-list a:hover {
      color: var(--brand-soft-gold);
    }

    .footer-bottom {
      margin-top: 2rem;
      font-size: 0.78rem;
      color: var(--text-muted);
      text-align: center;
    }

    /* Scroll reveal base */
    .reveal {
      opacity: 0;
      transform: translateY(22px);
      transition: opacity 650ms ease, transform 650ms ease;
    }

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

    /* small helpers */
    .text-gold {
      color: var(--brand-soft-gold);
    }

    .mt-sm { margin-top: 0.7rem; }
    .mt-md { margin-top: 1.3rem; }
    .mt-lg { margin-top: 2rem; }

    .intro-video-section {
  padding-top: 6rem;
  padding-bottom: 3rem;
}

.intro-video-wrapper {
  max-width: 960px;
  margin: 0 auto;
  border-radius: 24px;
  overflow: hidden;
  border: 1px solid rgba(148, 163, 184, 0.35);
  box-shadow: 0 24px 70px rgba(15, 23, 42, 0.45);
  background: radial-gradient(circle at top, rgba(16, 185, 129, 0.15), rgba(15, 23, 42, 0.9));
}

.intro-video-frame {
  position: relative;
  padding-bottom: 56.25%; /* 16:9 */
  height: 0;
}

.intro-video-frame iframe {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border: 0;
}



#mainNav {
    background-color: #ffffff;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    padding: 10px 0;
    font-family: 'Hind Siliguri', sans-serif;
    position: sticky;
    top: 0;
    z-index: 1000;
}

#mainNav ul {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    justify-content: center; /* মেনু মাঝে রাখার জন্য */
    align-items: center;
}

#mainNav ul li {
    position: relative;
    margin: 0 15px;
}

#mainNav ul li a {
    text-decoration: none;
    color: #333;
    font-size: 14px;
    font-weight: 500;
    transition: color 0.3s ease;
    padding: 8px 0;
    display: block;
}

#mainNav ul li a:hover, 
#mainNav ul li a.active {
    color: #1a73e8; /* একটিভ ও হোভার কালার */
}

   .nav-dropdown { position: relative; }

    .dropdown-menu {
      display: none;
      position: absolute;
      top: 100%;
      left: 80%;
      transform: translateX(-45%);
      background: #fff;
      min-width: 250px;
      border: 1px solid #ddd;
      list-style: none;
      padding: 5px 0;
      margin: 5px 0;
      border-radius: 40px;
      font-size: 16px;
      font-weight: 600;
    }

    .nav-dropdown.open .dropdown-menu {
      display: block;
    }

    .dropdown-menu li a {
      display: block;
      padding: 3px 6px;
      color: #333;
      text-decoration: none;
    }

    .dropdown-menu li a:hover {
      background: #f2f2f2;
    }

     .hero {
        padding-top: 110px;
        
        
      }

      #hero-margin1{
       padding-top: 110px;
       margin-top: -110px;

      }

/* ডোনেশন বাটন (CTA) স্টাইল */
.nav-cta {
    background: linear-gradient(135deg, #28a745, #218838);
    border: none;
    padding: 10px 20px;
    border-radius: 30px;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 8px;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.nav-cta:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(40, 167, 69, 0.4);
}

.nav-cta span {
    font-weight: 700;
    font-size: 15px;
}

/* অ্যানিমেশন */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}




.masterplan-section {
  padding: 80px 0;
  background: #f8f9fa;
}

.section-header {
  margin-bottom: 50px;
}

.section-title {
  font-size: 2.5rem;
  font-weight: 700;
  color: #1a1a1a;
  margin-bottom: 10px;
}

.section-subtitle {
  font-size: 1.1rem;
  color: #666;
}

/* Gallery Grid */
.masterplan-gallery {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 20px;
  margin-top: 30px;
}

.gallery-item {
  position: relative;
  overflow: hidden;
  border-radius: 12px;
  cursor: pointer;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.gallery-item:hover {
  transform: translateY(-5px);
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
}

.gallery-item img {
  width: 100%;
  height: 250px;
  object-fit: cover;
  display: block;
  transition: transform 0.3s ease;
}

.gallery-item:hover img {
  transform: scale(1.1);
}

.gallery-caption {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  background: linear-gradient(to top, rgba(0, 0, 0, 0.8), transparent);
  color: white;
  padding: 20px 15px 15px;
  transform: translateY(100%);
  transition: transform 0.3s ease;
}

.gallery-item:hover .gallery-caption {
  transform: translateY(0);
}

.gallery-caption i {
  font-size: 1.2rem;
  margin-bottom: 5px;
  display: block;
}

.gallery-caption p {
  margin: 0;
  font-size: 0.95rem;
  font-weight: 500;
}

/* Lightbox */
.lightbox {
  display: none;
  position: fixed;
  z-index: 9999;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.95);
  animation: fadeIn 0.3s;
}

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

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

.lightbox-content {
  position: relative;
  max-width: 90%;
  max-height: 90%;
  text-align: center;
}

.lightbox-content img {
  max-width: 100%;
  max-height: 80vh;
  border-radius: 8px;
  box-shadow: 0 10px 50px rgba(0, 0, 0, 0.5);
}

.lightbox-caption {
  color: white;
  font-size: 1.1rem;
  margin-top: 15px;
  padding: 10px;
}

.lightbox-counter {
  color: #ddd;
  font-size: 0.9rem;
  margin-top: 10px;
}

/* Navigation Buttons */
.lightbox-close,
.lightbox-prev,
.lightbox-next {
  position: absolute;
  color: white;
  font-size: 2.5rem;
  font-weight: bold;
  cursor: pointer;
  user-select: none;
  transition: all 0.3s ease;
  background: rgba(255, 255, 255, 0.1);
  width: 50px;
  height: 50px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
}

.lightbox-close {
  top: 20px;
  right: 30px;
}

.lightbox-close:hover {
  background: rgba(255, 0, 0, 0.8);
  transform: rotate(90deg);
}

.lightbox-prev,
.lightbox-next {
  top: 50%;
  transform: translateY(-50%);
}

.lightbox-prev {
  left: 30px;
}

.lightbox-next {
  right: 30px;
}

.lightbox-prev:hover,
.lightbox-next:hover {
  background: rgba(255, 255, 255, 0.3);
  transform: translateY(-50%) scale(1.1);
}

/* Responsive */
@media (max-width: 768px) {
  .masterplan-gallery {
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 15px;
  }
  
  .gallery-item img {
    height: 200px;
  }
  
  .lightbox-prev,
  .lightbox-next {
    width: 40px;
    height: 40px;
    font-size: 1.8rem;
  }
  
  .lightbox-prev { left: 10px; }
  .lightbox-next { right: 10px; }
}