@import url('https://fonts.googleapis.com/css2?family=Hind+Siliguri:wght@300;400;500;600;700&family=Noto+Serif+Bengali:wght@400;500;600;700&display=swap');

:root {
  --primary-color: #0d698b;
  --primary-dark: #0a546f;
  --secondary-color: #2c495f;
  --accent-color: #f8f1e5;
  --text-color: #222222;
  --light-color: #f9f9f9;
  --dark-color: #1a2847;
  --gold-color: #c9a145;
  --shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
  --shadow-hover: 0 8px 20px rgba(0, 0, 0, 0.15);
  --border-radius: 12px;
  --transition: all 0.3s ease;
}

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

body {
  font-family: 'Hind Siliguri', sans-serif;
  line-height: 1.6;
  color: var(--text-color);
  background-color: #f5f7fa;
  overflow-x: hidden;
}

h1,
h2,
h3 {
  font-family: 'Noto Serif Bengali', serif;
  font-weight: 700;
}

/* ফিক্সড হেডার */
.fixed-header {
  position: absolute;
  top: -150px;
  left: 0;
  width: 35%;
  height: 70px;
  background-color: rgb(255, 255, 255);
  align-items: center;
  display: flex;
  justify-content: space-between;
  padding: 10px 5%;
  z-index: 1000;
  transition: top 0.3s;
}

.fixed-header .Logoname1 {
  height: auto;
  width: 170px;
  border-radius: 10px;
}

/* সাইডবার নেভিগেশন */
.sidebar-nav {
  width: 100%;
  align-items: center;
  align-content: center;
  justify-items: center;
  justify-content: center;
  place-content: center;
  place-items: center;
  display: block;
  overflow-y: hidden;
  margin-top: 15px;
  top: 0px;
  position: sticky;
  background: #ffffff;
  padding: 15px 10px;
  box-shadow: var(--shadow);
  z-index: 1000;
}

.sidnavfexdscrol {
  display: flex;
  flex-direction: column;
  width: auto;
  align-items: center;
}

.topbuttonlin1 {
  background-color: rgba(52, 47, 47, 0.216);
  padding: 1px;
  height: 30px;
  width: 0px;
}

.nav-menu {
  display: flex;
  max-width: 100%;
  min-width: 100%;
  overflow-x: scroll;
}

.nav-menu a {
  text-decoration: none;
  color: var(--text-color);
  font-weight: 500;
  padding: 10px 15px;
  transition: all 0.3s;
  border-radius: 10%;
  width: max-content;
}

.nav-menu a:hover {
  border-radius: 5px;
  background-color: var(--primary-color);
  color: rgb(255, 255, 255);
}

.nav-menu a.active {
  background-color: var(--primary-color);
  color: white;
  box-shadow: 0 4px 8px rgba(13, 105, 139, 0.3);
}

progress {
  width: 100%;
  height: 0px;
  position: fixed;
  top: 2px;
  display: block;
  align-items: center;
  z-index: 1200;
}

/* হেডার */
header {
  background: linear-gradient(135deg, #0A192e 0%, #1a3a5f 100%);
  color: white;
  text-align: center;
  padding: 30px 0 20px;
  position: relative;
  overflow: hidden;
}

header::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100" preserveAspectRatio="none"><path d="M0,0 L100,0 L100,100 Z" fill="rgba(255,255,255,0.05)"/></svg>');
  background-size: cover;
}

header h1 {
  font-size: 2.8rem;
  margin: 15px 0;
  position: relative;
  text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
  line-height: 1.2;
}

.back-btn1 {
  position: absolute;
  top: 20px;
  left: 20px;
  z-index: 10;
}

.back-btn1 a {
  background: rgba(255, 255, 255, 0.2);
  color: white;
  border: 1px solid rgba(255, 255, 255, 0.5);
  padding: 10px 18px;
  border-radius: 50px;
  font-size: 15px;
  cursor: pointer;
  font-weight: 600;
  transition: var(--transition);
  backdrop-filter: blur(5px);
  display: flex;
  align-items: center;
  gap: 8px;
}

.back-btn1 a:hover {
  background: rgba(255, 255, 255, 0.3);
  transform: translateY(-2px);
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.2);
}

.main-nav2 {
  display: flex;
  justify-content: center;
  margin-top: 20px;
  position: relative;
  flex-wrap: nowrap;
  gap: 15px;
}

.main-nav2 :first-child {
  background-color: rgba(255, 255, 255, 0.25);
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
}

.top-button {
  background-color: rgba(255, 255, 255, 0.15);
  color: white;
  text-decoration: none;
  font-size: 18px;
  padding: 14px 28px;
  border-radius: 8px;
  transition: var(--transition);
  border: 1px solid rgba(255, 255, 255, 0.2);
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: 8px;
}

.top-button:hover {
  background-color: rgba(255, 255, 255, 0.25);
  transform: translateY(-3px);
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
}

div {
  font-family: FreeSerif;
  margin: 0;
  padding: 0;
  text-align: center;
}




section {
  padding: 40px 20px;
  margin: auto;
  text-align: justify;
}



.card {
  background: rgb(239, 239, 239);
  padding: 20px;
  border-radius: 10px;
  margin: 15px 0;
}

/* --- অ্যাকর্ডিয়ন বোতাম --- */
.accordion {
  background-color: var(--dark-color);
  color: #ffffff;
  cursor: pointer;
  padding: 12px 20px;
  width: 100%;
  border: 2px solid rgb(14, 42, 59);
  text-align: center;
  font-size: 19px;
  font-weight: bold;
  border-radius: 10px;
  transition: 0.4s;
  margin-bottom: 10px;
  box-shadow: 2px 2px 5px rgba(0, 0, 0, 0.3);
  position: relative;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.accordion:hover {
  background-color: rgb(22, 28, 22);
  transform: scale(1.01);
}

.accordion:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-hover);
}

.accordion::after {
  content: '\002B';
  font-size: 24px;
  color: white;
  transition: var(--transition);
}

.accordion.active::after {
  content: '\2212';
  transform: rotate(0deg);
}

.panel {
  display: none;
  padding: 5px 10px;
  background-color: rgb(255, 255, 255);
  overflow: hidden;
  transition: max-height 0.4s ease-out;
  border-radius: 0 0 var(--border-radius) var(--border-radius);
  margin-top: -10px;
  box-shadow: var(--shadow);
}


/* --- প্রধান লেআউট Wrapper যা মেনু ও কন্টেন্টকে পাশাপাশি রাখবে --- */
.main-layout-wrapper {
  display: flex;
  justify-content: center;
  gap: 20px;
  padding: 20px 10px;
  max-width: 1500px;
  margin: 0 auto;
}

/* আপনার বডি কন্টেন্টকে একটি "পেজ" এর মতো দেখাতে */
.page-wrapper {
  background-color: white;
  border-radius: 8px;
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
  padding: 40px;
  box-sizing: border-box;
  flex-grow: 1;
}


/* ফেসবুক মোডাল */
#fbModal {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.7);
  z-index: 1200;
  justify-content: center;
  align-items: center;
}

.fbModal-content {
  background-color: rgb(255, 255, 255);
  border-radius: 10px;
  width: 90%;
  max-width: 400px;
  padding: 20px;
  position: relative;
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.5);
  animation: fadeIn 0.2s ease;
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(-10px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.fbBackBtn {
  position: absolute;
  top: 10px;
  left: 10px;
  background: #c4c4c438;
  color: rgb(0, 0, 0);
  border: none;
  padding: 8px 12px;
  border-radius: 6px;
  cursor: pointer;
}

.fbBackBtn:hover {
  background-color: #ff0000;
  color: rgb(255, 255, 255);
}

.fbModal-body {
  text-align: center;
}

.profile-pic {
  width: 100px;
  height: 100px;
  border-radius: 50%;
  object-fit: cover;
  margin-bottom: 15px;
  border: 1px solid #000000;
}

.profile-name {
  font-weight: bold;
  font-size: 1.2em;
  margin-bottom: 15px;
  color: #1877f2;
}

.fbBtn {
  display: inline-block;
  background-color: #1877f2;
  color: white;
  padding: 10px 20px;
  border-radius: 6px;
  font-weight: bold;
  text-decoration: none;
  margin: 10px 0;
}

.fbBtn i {
  padding-right: 10px;
}

.fbBtn .fbloading {
  display: none;
  margin-right: 10px;
  width: 16px;
  height: 16px;
  border: 3px solid rgba(255, 255, 255, .3);
  border-radius: 50%;
  border-top-color: #fff;
  animation: spin 1s ease-in-out infinite;
}

.fbBtn:hover {
  background-color: #145dbf;
}

.fb-note {
  font-size: 0.8rem;
  color: #666;
  margin-top: 10px;
}

.fb-link-js {
  font-family: 'Arial', sans-serif;
  /* ফন্ট */
  font-size: 15px;
  /* লেখা বড়/ছোট */
  color: #1877f2;
  padding: 5px 5px;
  /* চারপাশে ফাঁকা */
  border-radius: 9px;
  /* কোণ গোল */
  text-decoration: none;
  /* আন্ডারলাইন না থাকা */
}

.fb-link-js:hover {
  background-color: #1877f2;
  /* হোভার রঙ পরিবর্তন */
  color: #ffffff;
  /* হোভার লেখার রঙ */
  cursor: pointer;
  border-radius: 2x;
  box-shadow: 1px 1px 10px 1px #27629d65;
}

/* Gallery */
.gallery {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.gallery img {
  width: calc(33.33% - 10px);
  height: 180px;
  object-fit: cover;
  border-radius: 8px;
  cursor: pointer;
  transition: transform 0.3s;
}

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


/* Album container */
.album {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 15px;
  justify-content: center;
  margin-top: 20px;
}

/* Album item */
.album-item {
  position: relative;
  overflow: hidden;
  border-radius: 10px;
  cursor: pointer;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.2);
  transition: transform 0.3s;
}

.album-item img {
  width: 100%;
  height: 150px;
  object-fit: cover;
  display: block;
  transition: transform 0.3s;
}

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

.videonai {
  width: 100%;
  height: 100%;
}

.nonevideocontent {
  display: block;
  width: 100%;
  height: 100%
}

.iformetionicon {
  font-size: 50px;
}

/* Caption */
.album-caption {
  position: absolute;
  bottom: 0;
  width: 100%;
  text-align: center;
  overflow: hidden;
  background-color: rgba(0, 0, 0, 0.6);
  color: white;
  font-size: 14px;
  padding: 5px;
  transition: all 0.3s ease;
}

.album-item:hover .album-caption {
  background-color: rgba(0, 0, 0, 0.75);
}

/* লাইটবক্স */
.lightbox {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.95);
  z-index: 2000;
  justify-content: center;
  align-items: center;
  flex-direction: column;
  opacity: 0;
  transition: opacity 0.3s ease;
}

.lightbox.active {
  display: flex;
  opacity: 1;
}

.lightbox-content {
  max-width: 90%;
  max-height: 75%;
  border-radius: 10px;
  box-shadow: 0 0 40px rgba(255, 255, 255, 0.1);
  transition: transform 0.3s ease;
}

.lightbox-caption {
  color: white;
  font-size: 20px;
  margin-top: 20px;
  text-align: center;
  max-width: 80%;
  padding: 0 20px;
  line-height: 1.5;
}

.close {
  position: absolute;
  top: 30px;
  right: 40px;
  font-size: 45px;
  color: white;
  cursor: pointer;
  z-index: 2001;
  transition: var(--transition);
  width: 50px;
  height: 50px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.1);
}

.close:hover {
  background: rgba(255, 255, 255, 0.2);
  transform: rotate(90deg);
}

.prev,
.next {
  cursor: pointer;
  position: absolute;
  top: 50%;
  padding: 16px;
  margin-top: -30px;
  color: white;
  font-size: 35px;
  font-weight: bold;
  user-select: none;
  z-index: 2001;
  background: rgba(0, 0, 0, 0.4);
  border-radius: 50%;
  width: 60px;
  height: 60px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
}

.prev:hover,
.next:hover {
  background: rgba(0, 0, 0, 0.7);
  transform: scale(1.1);
}

.prev {
  left: 40px;
}

.next {
  right: 40px;
}

/* Back Button Style */
.back-btn2 {
  background: #006eb2ff;
  padding: 0px;
  text-align: left;
}

.back-btn2 button {
  background: #1675b0ff;
  color: #ffffff;
  border: none;
  padding: 6px 6px;
  border-radius: 50px;
  font-size: 15px;
  cursor: pointer;
  font-weight: bold;
  transition: 0.3s;
}

.back-btn2 button:hover {
  background: #004a80;
  color: #fff;
}

/*উপরে উঠার আইকোন*/
.upre {
  position: fixed;
  bottom: 120px;
  right: 20px;
  display: block;
  border-radius: 50%;
  width: 40px;
  margin: 5px 0px 20px 0px;
}

.upreicon {
  background: #353c4631;
  color: rgb(1, 14, 3);
  font-size: 18px;
  border-radius: 50%;
  padding: 12px 12px;
  display: none;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  box-shadow: 0 6px 15px rgba(0, 0, 0, 0.3);
  transition: background 0.3s;
  z-index: 1200;
  backdrop-filter: blur(2px);
  border: 1px double rgba(7, 5, 5, 0.336);
}

.upreicon:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.35);
  backdrop-filter: blur(4px);
}

/* ফুটার */
footer {
  background-color: rgba(4, 5, 5, 0.908);
  color: white;
  padding: 20px;
  text-align: center;
}

.paragraph-P01 {
  background-color: var(--dark-color);
  color: #ececec;
  border-bottom: 1px solid rgb(156, 149, 149);
  padding: 5px;
  text-align: center;
  margin-top: 30px;
}

.credit-right {
  display: flex;
  justify-content: center;
  text-align: center;
  gap: 10px;
  margin-top: 15px;
  font-size: 0.9rem;
}

.topbuttonlin {
  background-color: rgb(52, 47, 47);
  padding: 1px;
  height: 100px;
  width: 0px;
}

.sazed {
  text-align: right;
}

.sadi {
  text-align: left;
}

.credit-right span {
  color: rgb(165, 172, 175);
  font-weight: bold;
}

.socalicon {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
}

.brand-icon {
  width: 30px;
  height: 30px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white !important;
  text-decoration: none;
  transition: all 0.3s ease;
  font-size: 18px;
}

.brand-icon:hover {
  transform: scale(1.1);
  box-shadow: 0 4px 8px rgb(0, 0, 0, 02);
}

.fb-brand {
  background: #1877f2;
}

.yt-brand {
  background: #ff0000;
}

.wh-brand {
  background: #25D366;
}

/* লোডিং এনিমেশন */
.loading {
  display: inline-block;
  width: 100%;
  height: 200px;
  border: 3px solid rgba(255, 255, 255, .3);
  border-radius: 50%;
  border-top-color: #fff;
  animation: spin 1s ease-in-out infinite;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

::-webkit-scrollbar {
  width: 3px;
  height: 3px;
}

::-webkit-scrollbar:hover {
  width: 6px;
  height: 6px;
}

::-webkit-scrollbar-track {
  background: #3a404900;
}

::-webkit-scrollbar-track:hover {
  background: #ced6e2;
}

::-webkit-scrollbar-thumb {
  background: #445d7a;
}

::-webkit-scrollbar-thumb:hover {
  background: #3f69a0;
}

body ::-webkit-scrollbar {
  width: 3px;
  height: 3px;
}

body ::-webkit-scrollbar:hover {
  width: 5px;
  height: 5px;
}

body ::-webkit-scrollbar-track {
  background: #3a3f4900;
}

body ::-webkit-scrollbar-track:hover {
  background: #cedbe2;
}

body ::-webkit-scrollbar-thumb {
  background: #a8b1b9;
}

body ::-webkit-scrollbar-thumb:hover {
  background: #6c7579;
}

/* Responsive */
@media (max-width: 768px) {

  /* হেডার */
  header {
    text-align: center;
    padding: 20px 0 20px;
    position: relative;
  }

  header h1 {
    font-size: 1.5em;
  }

  .fixed-header .Logoname1 {
    height: 40px;
    width: auto;
  }

  /* লাইটবক্স */
  .close {
    top: 20px;
    right: 30px;
    font-size: 30px;
    width: 30px;
    height: 30px;
  }

  .prev,
  .next {
    padding: 8px;
    font-size: 20px;
    width: 30px;
    height: 30px;
  }

  .prev {
    left: 20px;
  }

  .next {
    right: 20px;
  }

  .back-btn1 {
    position: relative;
    top: 2px;
    left: 2px;
    z-index: 10;
  }

  .back-btn1 a {
    padding: 8px 10px;
    font-size: 10px;
    font-weight: 500;
    gap: 1px;
  }

  .main-nav2 {
    margin-top: 10px;
    gap: 10px;
  }

  .top-button {
    font-size: 12px;
    padding: 10px 15px;
    font-weight: 400;
    gap: 10px;
  }

  .sidebar-nav {
    padding: 15px 10px;
  }

  .nav-menu {
    padding: 5px;
    width: max-content;
  }

  .nav-menu a {
    font-weight: 50px;
    padding: 4px 8px;
    border-radius: 7%;
  }

  .page-wrapper {
    padding: 15px;
    margin-top: 10px;
  }

  /*উপরে উঠার আইকোন*/
  .upre {
    bottom: 50px;
    right: 10px;
    width: 30px;
    margin: 5px 0px 14px 0px;
  }

  .upreicon {
    font-size: 10px;
    box-shadow: 0 3px 8px rgba(0, 0, 0, 0.3);
    transition: background 0.3s;
  }

  .upreicon:hover {
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.35);
  }

  .credit-right {
    display: flex;
    justify-content: center;
    text-align: center;
    gap: 5px;
    margin-top: 15px;
    font-size: 0.6rem;
  }


  .credit-right span {
    margin: 0%;
    font-size: 10px;
    color: rgb(165, 172, 175);
    font-weight: bold;
  }



  .gallery img {
    width: calc(50% - 10px);
  }
}

@media (max-width: 480px) {
  .gallery img {
    width: 50%;
  }
}