*{margin:0;padding:0;box-sizing:border-box;font-family:Arial}
body{background:#111}
.navbar{position:fixed;top:0;left:0;width:100%;height:80px;background:rgba(0,0,0,.55);backdrop-filter:blur(10px);display:flex;justify-content:space-between;align-items:center;padding:0 40px;z-index:1000}
.logo{color:#fff;font-size:30px;font-weight:bold}
.logo span{color:#00ffd0}
.nav-links{display:flex;gap:25px;align-items:center}
.nav-links li{list-style:none}
.nav-links a{text-decoration:none;color:#fff}
.btn{background:#25D366;padding:10px 18px;border-radius:30px}
.menu-btn{display:none;color:#fff;font-size:28px}

/* স্লাইডার দুটির লেআউট স্ট্রাকচার */
.main-banner-wrapper {
    margin-top:80px;
    display: flex;
    width: 100%;
    height: calc(100vh - 80px);
    background: #111;
    padding: 15px;
    gap: 15px;
}

/* আপনার আগের বড় স্লাইডার */
.custom-slider-container{width:75%;height:100%;position:relative;overflow:hidden;border-radius:12px}
.custom-slide{position:absolute;inset:0;opacity:0;transition:.8s;background-size:cover;background-position:center}
.custom-slide.active{opacity:1}
.overlay{position:absolute;left:8%;bottom:12%;color:#fff;background:rgba(0,0,0,.45);padding:25px;border-radius:10px}
.slider-btn{position:absolute;top:50%;transform:translateY(-50%);padding:15px;background:transparent;border:none;color:#fff;font-size:24px;cursor:pointer}
.prev-btn{left:20px}
.next-btn{right:20px}
.slider-dots{position:absolute;bottom:20px;left:50%;transform:translateX(-50%)}
.dot{display:inline-block;width:12px;height:12px;border-radius:50%;background:#888;margin:5px;cursor:pointer}
.dot.active{background:#fff}

/* নতুন ছোট অটো স্লাইডারের স্টাইল */
.mini-slider-container {
    width: 25%;
    height: 100%;
    position: relative;
    overflow: hidden;
    border-radius: 12px;
    box-shadow: 0 8px 25px rgba(0,0,0,0.5);
}
.mini-slider-track {
    display: flex;
    flex-direction: column;
    width: 100%;
    height: 100%;
    position: absolute;
    top: 0;
    left: 0;
}
.mini-slide {
    width: 100%;
    height: 100%;
    flex-shrink: 0;
    background-size: cover;
    background-position: center;
    position: relative;
    transition: transform 0.8s cubic-bezier(0.645, 0.045, 0.355, 1);
}
.mini-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(to top, rgba(0,0,0,0.8), transparent);
    display: flex;
    align-items: flex-end;
    padding: 20px;
    color: #fff;
}
.mini-overlay h3 {
    font-size: 18px;
    border-left: 3px solid #00ffd0;
    padding-left: 10px;
}

@media(max-width:900px){
    .menu-btn{display:block}
    .nav-links{display:none;position:absolute;top:80px;left:0;width:100%;background:#111;flex-direction:column;padding:20px}
    .nav-links.active{display:flex}
    
    /* মোবাইলে নিচে নিচে আসবে */
    .main-banner-wrapper { flex-direction: column; height: auto; }
    .custom-slider-container { width: 100%; height: 50vh; }
    .mini-slider-container { width: 100%; height: 30vh; }
}
.overlay {
    position: absolute;
    left: 38%;
    bottom: 44%;
    color: #fff;
    background: rgba(0,0,0,.45);
    padding: 25px;
    border-radius: 10px;
}

/*  */


.sahin-wrapper {
  position: relative;
  display: inline-block;
}





.sahin::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  border-radius: inherit;
  pointer-events: none;
  background-image: linear-gradient(
    0deg,
    #fff,
    hsl(var(--highlight-color-hue), 100%, 70%),
    hsla(var(--highlight-color-hue), 100%, 70%, 50%),
    8%,
    transparent
  );
  background-position: 0 0;
  opacity: 0;
  transition:
    opacity var(--transition),
    filter var(--transition);
}

.sahin-letter {
  position: relative;
  display: inline-block;
  color: #fff5;
  animation: sahin-letter-anim 2s ease-in-out infinite;
  transition:
    color var(--transition),
    text-shadow var(--transition),
    opacity var(--transition);
}

@keyframes sahin-letter-anim {
  50% {
    text-shadow: 0 0 3px #fff8;
    color: #fff;
  }
}

.sahin-svg {
  flex-grow: 1;
  height: 24px;
  margin-right: 0.5rem;
  fill: #e8e8e8;
  animation: sahin-flicker 2s linear infinite;
  animation-delay: 0.5s;
  filter: drop-shadow(0 0 2px #fff9);
  transition:
    fill var(--transition),
    filter var(--transition),
    opacity var(--transition);
}

@keyframes sahin-flicker {
  50% {
    opacity: 0.3;
  }
}

.sahin-txt-wrapper {
  position: relative;
  display: flex;
  align-items: center;
  min-width: 6.4em;
}

.sahin-txt-1,
.sahin-txt-2 {
  position: absolute;
  word-spacing: -1em;
}

.sahin-txt-1 {
  animation: sahin-appear-anim 1s ease-in-out forwards;
}

.sahin-txt-2 {
  opacity: 0;
}

@keyframes sahin-appear-anim {
  0% {
    opacity: 0;
  }
  100% {
    opacity: 1;
  }
}

.sahin:focus .sahin-txt-1 {
  animation: sahin-opacity-anim 0.3s ease-in-out forwards;
  animation-delay: 1s;
}

.sahin:focus .sahin-txt-2 {
  animation: sahin-opacity-anim 0.3s ease-in-out reverse forwards;
  animation-delay: 1s;
}

@keyframes sahin-opacity-anim {
  0% {
    opacity: 1;
  }
  100% {
    opacity: 0;
  }
}

.sahin:focus .sahin-letter {
  animation:
    sahin-focused-letter-anim 1s ease-in-out forwards,
    sahin-letter-anim 1.2s ease-in-out infinite;
  animation-delay: 0s, 1s;
}

@keyframes sahin-focused-letter-anim {
  0%,
  100% {
    filter: blur(0px);
  }
  50% {
    transform: scale(2);
    filter: blur(10px) brightness(150%)
      drop-shadow(-36px 12px 12px hsl(var(--highlight-color-hue), 100%, 70%));
  }
}

.sahin:focus .sahin-svg {
  animation-duration: 1.2s;
  animation-delay: 0.2s;
}

.sahin:focus::before {
  box-shadow:
    0 -8px 12px -6px #fff3 inset,
    0 -16px 16px -8px hsla(var(--highlight-color-hue), 100%, 70%, 20%) inset,
    1px 1px 1px #fff3,
    2px 2px 2px #fff1,
    -1px -1px 1px #0002,
    -2px -2px 2px #0001;
}

.sahin:focus::after {
  opacity: 0.6;
  mask-image: linear-gradient(0deg, #fff, transparent);
  filter: brightness(100%);
}

/* Animation delays */
.sahin-letter:nth-child(1),
.sahin:focus .sahin-letter:nth-child(1) { animation-delay: 0s; }
.sahin-letter:nth-child(2),
.sahin:focus .sahin-letter:nth-child(2) { animation-delay: 0.08s; }
.sahin-letter:nth-child(3),
.sahin:focus .sahin-letter:nth-child(3) { animation-delay: 0.16s; }
.sahin-letter:nth-child(4),
.sahin:focus .sahin-letter:nth-child(4) { animation-delay: 0.24s; }
.sahin-letter:nth-child(5),
.sahin:focus .sahin-letter:nth-child(5) { animation-delay: 0.32s; }
.sahin-letter:nth-child(6),
.sahin:focus .sahin-letter:nth-child(6) { animation-delay: 0.4s; }
.sahin-letter:nth-child(7),
.sahin:focus .sahin-letter:nth-child(7) { animation-delay: 0.48s; }
.sahin-letter:nth-child(8),
.sahin:focus .sahin-letter:nth-child(8) { animation-delay: 0.56s; }
.sahin-letter:nth-child(9),
.sahin:focus .sahin-letter:nth-child(9) { animation-delay: 0.64s; }
.sahin-letter:nth-child(10),
.sahin:focus .sahin-letter:nth-child(10) { animation-delay: 0.72s; }

/* Active state */
.sahin:active {
  border: solid 1px hsla(var(--highlight-color-hue), 100%, 80%, 70%);
  background-color: hsla(var(--highlight-color-hue), 50%, 20%, 0.5);
}

.sahin:active::before {
  box-shadow:
    0 -8px 12px -6px #fffa inset,
    0 -16px 16px -8px hsla(var(--highlight-color-hue), 100%, 70%, 80%) inset,
    1px 1px 1px #fff4,
    2px 2px 2px #fff2,
    -1px -1px 1px #0002,
    -2px -2px 2px #0001;
}

.sahin:active::after {
  opacity: 1;
  mask-image: linear-gradient(0deg, #fff, transparent);
  filter: brightness(200%);
}

.sahin:active .sahin-letter {
  text-shadow: 0 0 1px hsla(var(--highlight-color-hue), 100%, 90%, 90%);
  animation: none;
}

/* Hover state */
.sahin:hover {
  border: solid 1px hsla(var(--highlight-color-hue), 100%, 80%, 40%);
}

.sahin:hover::before {
  box-shadow:
    0 -8px 8px -6px #fffa inset,
    0 -16px 16px -8px hsla(var(--highlight-color-hue), 100%, 70%, 30%) inset,
    1px 1px 1px #fff2,
    2px 2px 2px #fff1,
    -1px -1px 1px #0002,
    -2px -2px 2px #0001;
}

.sahin:hover::after {
  opacity: 1;
  mask-image: linear-gradient(0deg, #fff, transparent);
}

.sahin:hover .sahin-svg {
  fill: #fff;
  filter: drop-shadow(0 0 3px hsl(var(--highlight-color-hue), 100%, 70%))
    drop-shadow(0 -4px 6px #0009);
  animation: none;
}


.sahin-wrapper {
    position: relative;
    display: inline-block;
    top: 40%;
    left: 76%;
}


.overlay {
    position: absolute;
    left: 30%;
    bottom: 44%;
    color: #fff;
    background: rgba(0, 0, 0, .45);
    padding: 25px;
    border-radius: 10px;
}

/*  */

/* মেইন স্প্লিট সেকশন স্টাইল */
.modern-split-section {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 60px 20px;
    box-sizing: border-box;
}

.split-container {
    max-width: 1200px;
    width: 100%;
    display: flex;
    align-items: center;
    gap: 50px;
}

/* ==================== বাম পাশ (অ্যানিমেশন) ==================== */
.split-left {
    flex: 1;
    background: #161616;
    padding: 60px 40px;
    border-radius: 16px;
    text-align: center;
    border: 1px solid rgba(255, 255, 255, 0.05);
    box-shadow: 0 20px 40px rgba(0,0,0,0.3);
}

#flip-container {
    color: #999;
    text-transform: uppercase;
    font-size: 36px;
    font-weight: bold;
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 12px;
    height: 55px;
    overflow: hidden;
}

#flip {
    height: 55px;
    overflow: hidden;
}

#flip > div {
    height: 55px;
    margin-bottom: 35px;
}

#flip > div > div {
    color: #fff;
    padding: 4px 16px;
    height: 55px;
    display: flex;
    align-items: center;
    border-radius: 6px;
}

/* অ্যানিমেশন ট্রিপল লুপ */
#flip > div:first-child {
    animation: flipShow 6s cubic-bezier(0.645, 0.045, 0.355, 1) infinite;
}

#flip div:nth-child(1) div { background: #4ec7f3; }
#flip div:nth-child(2) div { background: #42c58a; }
#flip div:nth-child(3) div { background: #DC143C; }

@keyframes flipShow {
    0%, 5% { margin-top: 0px; }
    30%, 35% { margin-top: -90px; }
    65%, 70% { margin-top: -180px; }
    95%, 100% { margin-top: 0px; }
}

.demo-text {
    font-size: 13px;
    color: #555;
    margin-top: 25px;
    text-transform: lowercase;
}

/* ==================== ডান পাশ (ডিটেইলস) ==================== */
.split-right {
    flex: 1;
}

.sub-title {
    color: #00ffd0;
    font-weight: bold;
    letter-spacing: 2px;
    font-size: 14px;
    display: block;
    margin-bottom: 15px;
}

.split-right h2 {
    font-size: 2.5rem;
    line-height: 1.2;
    margin-bottom: 20px;
}

.description {
    color: #aaa;
    font-size: 16px;
    line-height: 1.6;
    margin-bottom: 30px;
}

.feature-list {
    list-style: none;
    margin-bottom: 35px;
}

.feature-list li {
    font-size: 16px;
    margin-bottom: 12px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.feature-list li i {
    color: #00ffd0;
    font-size: 18px;
}

.cta-btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    background: #00ffd0;
    color: #111;
    text-decoration: none;
    padding: 14px 28px;
    border-radius: 30px;
    font-weight: bold;
    transition: 0.3s ease;
}

.cta-btn:hover {
    background: #fff;
    transform: translateY(-3px);
}

/* ==================== রেসপনসিভ মিডিয়া কুয়েরি ==================== */
@media (max-width: 991px) {
    .split-container {
        flex-direction: column;
        gap: 40px;
    }
    .split-left, .split-right {
        width: 100%;
    }
}

@media (max-width: 600px) {
    #flip-container {
        font-size: 24px;
        height: 40px;
    }
    #flip, #flip > div {
        height: 40px;
    }
    #flip > div > div {
        height: 40px;
    }
    @keyframes flipShow {
        0%, 5% { margin-top: 0px; }
        30%, 35% { margin-top: -75px; }
        65%, 70% { margin-top: -150px; }
        95%, 100% { margin-top: 0px; }
    }
}


.sub-title {
    color: #00ffd0;
    font-weight: bold;
    letter-spacing: 2px;
    font-size: 42px;
    display: block;
    margin-bottom: 15px;
}

#modern-split-section{
    margin-top: 20px;
}

.modern-split-section {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 60px 20px;
    box-sizing: border-box;
    margin: 89px 0px;
}
.split-right h2 {
    font-size: 2.5rem;
    line-height: 1.2;
    margin-bottom: 20px;
    color: wheat;
}
.feature-list li {
    font-size: 16px;
    margin-bottom: 12px;
    display: flex;
    align-items: center;
    gap: 10px;
    color: white;
}


/* কার্সার ব্লিংকিং ইফেক্ট */
.typing-cursor::after {
    content: '|';
    animation: blink 0.7s infinite;
    color: #ff4a57; /* আপনার ওয়েবসাইটের থিম কালার দিন */
    margin-left: 2px;
}

@keyframes blink {
    0%, 100% { opacity: 1; }
    50% { opacity: 0; }
}
/*  */
@font-face {
  font-family: "Mona Sans";
  src: url("https://assets.codepen.io/64/Mona-Sans.woff2") format("woff2 supports variations"),
       url("https://assets.codepen.io/64/Mona-Sans.woff2") format("woff2-variations");
  font-weight: 100 1000;
}

@layer properties {
  @property --bg-position {
    syntax: "<number>";
    inherits: true;
    initial-value: 100;
  }
}

:root {
  --body-bg: hsl(0, 0%, 6%);
  --btn-bg: hsl(0, 0%, 0%);
  --btn-border-width: 1.5;
  --btn-scale: 1.03; /* বাটন সবসময় হালকা বড় দেখাবে */

  --color-white: hsl(0, 0%, 100%);
  --color-cyan: hsl(180, 100%, 50%);
  --color-blue: hsl(240, 100%, 50%);
  --color-purple: hsl(270, 100%, 50%);
  --color-pink: hsl(330, 40%, 70%);
  --color-red: hsl(0, 100%, 50%);
  --color-yellow: hsl(60, 100%, 50%);
  --color-lime: hsl(90, 100%, 75%);
}

@supports (color: color(display-p3 0 0 0)) {
  :root {
    --color-white: color(display-p3 1 1 1);
    --color-cyan: color(display-p3 0 1 1);
    --color-blue: color(display-p3 0 0 1);
    --color-purple: color(display-p3 0.5 0 1);
    --color-pink: color(display-p3 1 0.4 0.7);
    --color-red: color(display-p3 1 0 0);
    --color-yellow: color(display-p3 1 1 0);
    --color-lime: color(display-p3 0.75 1 0);
  }
}

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

body {
  background: var(--body-bg);
  font-family: "Mona Sans", sans-serif;
  margin: 0;
  height: 100vh;
}

/* অটোমেটিক লাইটিং অ্যানিমেশন লুপ */
@keyframes autoGlow {
  0% {
    --bg-position: 100;
  }
  100% {
    --bg-position: 0;
  }
}

main {
  width: 100%;
  height: 100%;
  display: grid;
  place-items: center;
}

main button {
  all: unset;
  background: transparent;
  border-width: 0;
  transform: scale(var(--btn-scale));
  /* হোভার ছাড়াই অটোমেটিক অ্যানিমেশন */
  animation: autoGlow 4s linear infinite;
}

main button > div {
  display: block;
  padding: 0.8em 1.2em;
  background: var(--btn-bg);
  color: white;
  font-weight: bold;
  border-radius: 8px;
  font-size: 22px;
  position: relative;
  cursor: pointer;
}

main button > div > span {
  background: linear-gradient(
      to right,
      var(--color-white), var(--color-white),
      var(--color-cyan), var(--color-blue), var(--color-purple),
      var(--color-pink), var(--color-red), var(--color-yellow),
      var(--color-lime),
      var(--color-white), var(--color-white)
    )
    no-repeat calc(var(--bg-position) * 1%) 0% / 900%;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  letter-spacing: 0.15ch;
  font-weight: 600;
}

/* ব্যাকগ্রাউন্ড গ্লো (Blur Glow) */
main button > div:after {
  display: block;
  position: absolute;
  content: "";
  width: 100%;
  height: 100%;
  background: linear-gradient(
      to right,
      var(--color-white), var(--color-white),
      var(--color-cyan), var(--color-blue), var(--color-purple),
      var(--color-pink), var(--color-red), var(--color-yellow),
      var(--color-lime),
      var(--color-white), var(--color-white)
    )
    no-repeat calc(var(--bg-position) * 1%) 0% / 900%;
  transform: translateY(0);
  left: 0;
  top: 0;
  z-index: -2;
  filter: blur(25px);
  opacity: 0.5;
}

/* বর্ডার গ্লো (Border Glow) */
main button > div:before {
  content: "";
  display: block;
  position: absolute;
  width: calc(100% + calc(calc(var(--btn-border-width) * 2) * 1px));
  height: calc(100% + calc(calc(var(--btn-border-width) * 2) * 1px));
  background: linear-gradient(
      to right,
      var(--color-white), var(--color-white),
      var(--color-cyan), var(--color-blue), var(--color-purple),
      var(--color-pink), var(--color-red), var(--color-yellow),
      var(--color-lime),
      var(--color-white), var(--color-white)
    )
    no-repeat calc(var(--bg-position) * 1%) 0% / 900%;
  border-radius: 9px;
  z-index: -1;
  top: calc(var(--btn-border-width) * -1px);
  left: calc(var(--btn-border-width) * -1px);
  opacity: 1;
}

/* বাটনে ক্লিক করার অ্যানিমেশন */
main button:active {
  transform: scale(0.98);
}

@import url('https://fonts.googleapis.com/css?family=Lato');

/* মেইন সেকশন কনফিগ */
#our-service {
  background: hsl(220, 10%, 12%);
  padding: 60px 20px;
  width: 100%;
  font-family: "Lato", "Segoe Ui", sans-serif;
}

.service-main-wrapper {
  max-width: 1400px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
}

/* সেকশন টপ বাটন স্টাইল */
.service-header-btn {
  font-family: inherit;
  font-weight: bold;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: hsl(0, 0%, 90%);
  padding: 12px 30px;
  border: 2px solid hsl(0, 0%, 50%);
  border-radius: 50px;
  background: transparent;
  margin-bottom: 50px;
  cursor: pointer;
  transition: 0.3s;
}
.service-header-btn:hover {
  border-color: hsl(190, 50%, 50%);
  color: hsl(190, 50%, 50%);
}

/* ১২টি কার্ডের জন্য মাল্টি-কলাম গ্রিড লেআউট */
.service-cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(290px, 1fr));
  gap: 35px;
  width: 100%;
  justify-items: center;
}

/* কাস্টম ফ্লিপ কার্ড কন্টেইনার */
.srv-card-container {
  --card-primary: hsl(var(--card-hue), 50%, 50%);
  --card-white-1: hsl(0, 0%, 100%);
  --card-white-2: hsl(0, 0%, 95%);
  --card-dark: hsl(var(--card-hue), 25%, 15%);
  --card-grey: hsl(0, 0%, 20%);

  width: 290px;
  height: 460px;
  perspective: 1000px;
}

.srv-flip-card {
  width: 100%;
  height: 100%;
  position: relative;
  transform-style: preserve-3d;
  transition: .6s .1s;
}

/* হোভার করলে ৩ডি ফ্লিপ ট্রিগার */
.srv-card-container:hover .srv-flip-card,
.srv-card-container:focus-within .srv-flip-card {
  transform: rotateY(180deg);
}

/* কার্ডের দুই পিঠের জেনারেল স্টাইল */
.srv-front,
.srv-back {
  width: 100%;
  height: 100%;
  border-radius: 24px;
  background: var(--card-dark);
  position: absolute;
  top: 0;
  left: 0;
  overflow: hidden;
  backface-visibility: hidden;
  display: flex;
  justify-content: center;
  align-items: center;
}

.srv-front {
  transform: rotateY(0deg);
  z-index: 2;
}

.srv-back {
  transform: rotateY(180deg);
  z-index: 1;
}

/* ব্যাকগ্রাউন্ড পিকচার ও ওভারলে */
.srv-figure,
.srv-img-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  margin: 0;
  z-index: -1;
}

.srv-figure img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 24px;
}

/* কার্ডের উপরের হেডার টেক্সট (Pure Black) */
.srv-caption {
  display: block;
  width: auto;
  margin-top: 12%;
  padding: 8px 18px;
  font-weight: 900;
  line-height: 1.4;
  letter-spacing: 1px;
  text-align: right;
  position: absolute;
  top: 0;
  right: 12px;
  color: #000000 !important; 
  background: rgba(255, 255, 255, 0.9); 
  border-radius: 8px;
  box-shadow: 0 4px 10px rgba(0,0,0,0.3);
}

.srv-img-overlay {
  background: hsla(var(--card-hue), 25%, 10%, 0.35);
}

.srv-front .srv-img-overlay {
  clip-path: polygon(0 20%, 100% 40%, 100% 100%, 0 100%);
}

.srv-front .srv-img-overlay::before {
  content: "";
  position: absolute;
  top: 34%;
  left: 50%;
  transform: translate(-50%, -50%) rotate(18deg);
  width: 100%;
  height: 6px;
  border: 1px solid var(--card-primary);
  border-left-color: transparent;
  border-right-color: transparent;
  transition: .1s;
}

.srv-back .srv-img-overlay {
  clip-path: polygon(0 0, 100% 0, 100% 80%, 0 60%);
}

/* ফিচারের লিস্ট স্টাইল (Pure Black Font) */
.srv-list {
  padding-top: 45%;
  margin: 0 auto;
  width: 85%;
  height: 100%;
  list-style: none;
  display: flex;
  justify-content: center;
  align-items: center;
  flex-direction: column;
}

.srv-list li {
  width: 100%;
  margin-top: 12px;
  padding-bottom: 8px;
  font-size: 14.5px;
  font-weight: 900; 
  text-align: center;
  position: relative;
  color: #000000 !important; 
  text-shadow: 0px 0px 10px rgba(255, 255, 255, 1), 0px 0px 5px rgba(255, 255, 255, 0.8);
}

.srv-list li:not(:last-child)::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 1.5px;
  background: #000000;
  opacity: .25;
}

/* ব্যাক সাইডের অ্যাকশন বাটন */
.srv-action-btn {
  font-family: inherit;
  font-weight: bold;
  color: #000000 !important;
  letter-spacing: 2px;
  padding: 10px 28px;
  border: 2px solid #000000;
  border-radius: 1000px;
  background: rgba(255, 255, 255, 0.95);
  transition: .3s;
  cursor: pointer;
  z-index: 5;
  box-shadow: 0 4px 15px rgba(0,0,0,0.3);
}

.srv-action-btn:hover,
.srv-action-btn:focus {
  color: white !important;
  background: var(--card-primary);
  border-color: var(--card-primary);
}

/* ব্যাক সাইডের ডেকোরেশন লাইন্স */
.srv-design-box {
  --tr: 90;
  --op: .35;
  width: 100%;
  height: 100%;
  background: transparent;
  position: absolute;
  top: 0;
  left: 0;
  pointer-events: none;
}

.srv-line {
  display: block;
  background: #000000; 
  position: absolute;
  opacity: var(--op);
  transition: .3s;
}

.srv-line--1, .srv-line--2, .srv-line--3, .srv-line--4 { width: 1px; height: 100%; }
.srv-line--1 { left: 20%; top: 0; transform: translateY(calc((var(--tr) - (var(--tr) * 2)) * 1%)); }
.srv-line--2 { left: 80%; top: 0; transform: translateY(calc((var(--tr) - (var(--tr) * 2)) * 1%)); }
.srv-line--3 { left: 24%; bottom: 0; transform: translateY(calc(var(--tr) * 1%)); }
.srv-line--4 { left: 76%; bottom: 0; transform: translateY(calc(var(--tr) * 1%)); }

.srv-line--5, .srv-line--6, .srv-line--7, .srv-line--8 { width: 100%; height: 1px; }
.srv-line--5 { top: 41%; left: 0; transform: translateX(calc((var(--tr) - (var(--tr) * 2)) * 1%)); }
.srv-line--6 { top: 59%; left: 0; transform: translateX(calc((var(--tr) - (var(--tr) * 2)) * 1%)); }
.srv-line--7 { top: 44%; right: 0; transform: translateX(calc(var(--tr) * 1%)); }
.srv-line--8 { top: 56%; right: 0; transform: translateX(calc(var(--tr) * 1%)); }

.srv-action-btn:hover + .srv-design-box { --tr: 20; --op: .6; }

@import url('https://fonts.googleapis.com/css?family=Lato');

/* মেইন সেকশন কনফিগ */
#our-service {
  background: hsl(220, 10%, 12%);
  padding: 60px 20px;
  width: 100%;
  font-family: "Lato", "Segoe Ui", sans-serif;
}

.service-main-wrapper {
  max-width: 1400px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  align-items: center;
}

/* সেকশন টপ বাটন স্টাইল */
.service-header-btn {
  font-family: inherit;
  font-weight: bold;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: hsl(0, 0%, 90%);
  padding: 12px 30px;
  border: 2px solid hsl(0, 0%, 50%);
  border-radius: 50px;
  background: transparent;
  margin-bottom: 50px;
  cursor: pointer;
  transition: 0.3s;
}
.service-header-btn:hover {
  border-color: hsl(190, 50%, 50%);
  color: hsl(190, 50%, 50%);
}

/* ১২টি কার্ডের জন্য মাল্টি-কলাম গ্রিড লেআউট */
.service-cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(290px, 1fr));
  gap: 35px;
  width: 100%;
  justify-items: center;
}

/* কাস্টম ফ্লিপ কার্ড কন্টেইনার */
.srv-card-container {
  --card-primary: hsl(var(--card-hue), 50%, 50%);
  --card-white-1: hsl(0, 0%, 100%);
  --card-white-2: hsl(0, 0%, 95%);
  --card-dark: hsl(var(--card-hue), 25%, 15%);
  --card-grey: hsl(0, 0%, 20%);

  width: 290px;
  height: 460px;
  perspective: 1000px;
}

.srv-flip-card {
  width: 100%;
  height: 100%;
  position: relative;
  transform-style: preserve-3d;
  transition: .6s .1s;
}

/* হোভার করলে ৩ডি ফ্লিপ ট্রিগার */
.srv-card-container:hover .srv-flip-card,
.srv-card-container:focus-within .srv-flip-card {
  transform: rotateY(180deg);
}

/* কার্ডের দুই পিঠের জেনারেল স্টাইল */
.srv-front,
.srv-back {
  width: 100%;
  height: 100%;
  border-radius: 24px;
  background: var(--card-dark);
  position: absolute;
  top: 0;
  left: 0;
  overflow: hidden;
  backface-visibility: hidden;
  display: flex;
  justify-content: center;
  align-items: center;
}

.srv-front {
  transform: rotateY(0deg);
  z-index: 2;
}

.srv-back {
  transform: rotateY(180deg);
  z-index: 1;
}

/* ব্যাকগ্রাউন্ড পিকচার ও ওভারলে */
.srv-figure,
.srv-img-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  margin: 0;
  z-index: -1;
}

.srv-figure img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 24px;
}

/* কার্ডের উপরের হেডার টেক্সট (Pure Black + Auto Lighting Effect) */
.srv-caption {
  display: block;
  width: auto;
  margin-top: 12%;
  padding: 8px 18px;
  font-weight: 900;
  line-height: 1.4;
  letter-spacing: 1px;
  text-align: right;
  position: absolute;
  top: 0;
  right: 12px;
  color: #000000 !important; 
  background: rgba(255, 255, 255, 0.95); 
  border-radius: 8px;
  /* হেডার ক্যাপশনে অলওয়েজ গ্লো অ্যানিমেশন */
  animation: captionGlow 2s infinite alternate ease-in-out;
}

.srv-img-overlay {
  background: hsla(var(--card-hue), 25%, 10%, 0.35);
}

.srv-front .srv-img-overlay {
  clip-path: polygon(0 20%, 100% 40%, 100% 100%, 0 100%);
}

.srv-front .srv-img-overlay::before {
  content: "";
  position: absolute;
  top: 34%;
  left: 50%;
  transform: translate(-50%, -50%) rotate(18deg);
  width: 100%;
  height: 6px;
  border: 1px solid var(--card-primary);
  border-left-color: transparent;
  border-right-color: transparent;
  transition: .1s;
}

.srv-back .srv-img-overlay {
  clip-path: polygon(0 0, 100% 0, 100% 80%, 0 60%);
}

/* ফিচারের লিস্ট স্টাইল */
.srv-list {
  padding-top: 45%;
  margin: 0 auto;
  width: 85%;
  height: 100%;
  list-style: none;
  display: flex;
  justify-content: center;
  align-items: center;
  flex-direction: column;
}

/* লিস্টের লেখাগুলোর জন্য অলওয়েজ অটো লাইটিং গ্লো ইফেক্ট (Pure Black Font) */
.srv-list li {
  width: 100%;
  margin-top: 12px;
  padding-bottom: 8px;
  font-size: 14.5px;
  font-weight: 900; 
  text-align: center;
  position: relative;
  color: #000000 !important; 
  /* টেক্সট গ্লো অ্যানিমেশন যুক্ত করা হলো */
  animation: textLighting 2.5s infinite ease-in-out;
}

.srv-list li:not(:last-child)::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 1.5px;
  background: #000000;
  opacity: .25;
}

/* 🌟 ১. লেখার পেছনের শ্যাডো লাইটিং অ্যানিমেশন (সবসময় চলবে) */
@keyframes textLighting {
  0% {
    text-shadow: 
      0 0 4px rgba(255, 255, 255, 1),
      0 0 10px rgba(255, 255, 255, 1),
      0 0 20px var(--card-primary);
  }
  50% {
    text-shadow: 
      0 0 8px rgba(255, 255, 255, 1),
      0 0 18px rgba(0, 242, 254, 1),   /* সায়ান নিয়ন টাচ */
      0 0 30px rgba(253, 56, 161, 0.8); /* ম্যাজেন্টা নিয়ন টাচ */
  }
  100% {
    text-shadow: 
      0 0 4px rgba(255, 255, 255, 1),
      0 0 12px rgba(255, 255, 255, 1),
      0 0 22px var(--card-primary);
  }
}

/* 🌟 ২. হেডার ক্যাপশন বক্সের বর্ডার এবং গ্লো অ্যানিমেশন */
@keyframes captionGlow {
  0% {
    box-shadow: 0 4px 10px rgba(0,0,0,0.3), 0 0 5px rgba(255,255,255,0.5);
    border: 1px solid rgba(255,255,255,0.2);
  }
  100% {
    box-shadow: 0 4px 15px rgba(0,0,0,0.4), 0 0 15px var(--card-primary);
    border: 1px solid var(--card-primary);
  }
}

/* ব্যাক সাইডের অ্যাকশন বাটন */
.srv-action-btn {
  font-family: inherit;
  font-weight: bold;
  color: #000000 !important;
  letter-spacing: 2px;
  padding: 10px 28px;
  border: 2px solid #000000;
  border-radius: 1000px;
  background: rgba(255, 255, 255, 0.95);
  transition: .3s;
  cursor: pointer;
  z-index: 5;
  box-shadow: 0 4px 15px rgba(0,0,0,0.3);
}

.srv-action-btn:hover,
.srv-action-btn:focus {
  color: white !important;
  background: var(--card-primary);
  border-color: var(--card-primary);
  box-shadow: 0 0 20px var(--card-primary);
}

/* ব্যাক সাইডের ডেকোরেশন লাইন্স */
.srv-design-box {
  --tr: 90;
  --op: .35;
  width: 100%;
  height: 100%;
  background: transparent;
  position: absolute;
  top: 0;
  left: 0;
  pointer-events: none;
}

.srv-line {
  display: block;
  background: #000000; 
  position: absolute;
  opacity: var(--op);
  transition: .3s;
}

.srv-line--1, .srv-line--2, .srv-line--3, .srv-line--4 { width: 1px; height: 100%; }
.srv-line--1 { left: 20%; top: 0; transform: translateY(calc((var(--tr) - (var(--tr) * 2)) * 1%)); }
.srv-line--2 { left: 80%; top: 0; transform: translateY(calc((var(--tr) - (var(--tr) * 2)) * 1%)); }
.srv-line--3 { left: 24%; bottom: 0; transform: translateY(calc(var(--tr) * 1%)); }
.srv-line--4 { left: 76%; bottom: 0; transform: translateY(calc(var(--tr) * 1%)); }

.srv-line--5, .srv-line--6, .srv-line--7, .srv-line--8 { width: 100%; height: 1px; }
.srv-line--5 { top: 41%; left: 0; transform: translateX(calc((var(--tr) - (var(--tr) * 2)) * 1%)); }
.srv-line--6 { top: 59%; left: 0; transform: translateX(calc((var(--tr) - (var(--tr) * 2)) * 1%)); }
.srv-line--7 { top: 44%; right: 0; transform: translateX(calc(var(--tr) * 1%)); }
.srv-line--8 { top: 56%; right: 0; transform: translateX(calc(var(--tr) * 1%)); }

.srv-action-btn:hover + .srv-design-box { --tr: 20; --op: .6; }

/* Import Google Font */
@import url('https://fonts.googleapis.com/css2?family=Orbitron:wght@400;700&family=Inter:wght@300;500;700&display=swap');

.it-testimonial-wrapper {
    padding: 80px 0;
    background-color: #0b0f19; /* প্রিমিয়াম ডার্ক আইটি ব্যাকগ্রাউন্ড */
    color: #ffffff;
    font-family: 'Inter', sans-serif;
}

.tech-title {
    text-align: center;
    margin-bottom: 60px;
}

.tech-title h2 {
    font-family: 'Orbitron', sans-serif; /* সাইবারপঙ্ক/টেক লুক ফন্ট */
    font-size: 2.5rem;
    letter-spacing: 2px;
    background: linear-gradient(45deg, #00f2fe, #4facfe);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.tech-title p {
    color: #8a99ad;
    margin-top: 10px;
}

/* Grid System */
.tech-client-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 40px;
    padding: 0 20px;
}

/* Base Card Styling */
.tech-card {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 20px;
    padding: 35px;
    position: relative;
    backdrop-filter: blur(10px);
    transition: all 0.6s cubic-bezier(0.25, 1, 0.5, 1);
    opacity: 0; /* JS দিয়ে অ্যানিমেশনের জন্য */
}

/* Badge Styling */
.tech-badge {
    position: absolute;
    top: -15px;
    right: 25px;
    background: #00f2fe;
    color: #000;
    padding: 5px 15px;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    box-shadow: 0 0 15px rgba(0, 242, 254, 0.4);
}

/* Profiles */
.tech-client-profile {
    display: flex;
    align-items: center;
    gap: 20px;
    margin-bottom: 20px;
}

.tech-avatar {
    width: 65px;
    height: 65px;
    border-radius: 50%;
    overflow: hidden;
    border: 2px solid #4facfe;
}

.tech-avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.tech-meta h3 {
    font-size: 1.15rem;
    margin: 0;
    color: #fff;
}

.tech-meta span {
    font-size: 0.85rem;
    color: #00f2fe;
}

.tech-quote {
    font-size: 0.95rem;
    line-height: 1.6;
    color: #cbd5e1;
    font-style: italic;
}

/* --- আলাদা আলাদা অ্যানিমেশন ও হোভার ইফেক্টস --- */

/* কার্ড ১: নিওন সায়ান গ্লো + স্লাইড লেফট */
.card-style-1.reveal {
    opacity: 1;
    animation: slideLeft 0.8s ease forwards;
}
.card-style-1:hover {
    transform: translateY(-10px) rotate(-1deg);
    border-color: #00f2fe;
    box-shadow: 0 10px 30px rgba(0, 242, 254, 0.25);
}

/* কার্ড ২: পার্পল গ্লো + ফ্লিপ/আপ এফেক্ট */
.card-style-2 .tech-badge { background: #9d4edd; box-shadow: 0 0 15px rgba(157, 78, 221, 0.4); }
.card-style-2 .tech-avatar { border-color: #9d4edd; }
.card-style-2 .tech-meta span { color: #9d4edd; }
.card-style-2.reveal {
    opacity: 1;
    animation: flipUp 0.8s ease forwards;
}
.card-style-2:hover {
    transform: translateY(-12px) scale(1.03);
    border-color: #9d4edd;
    box-shadow: 0 10px 30px rgba(157, 78, 221, 0.25);
}

/* কার্ড ৩: গ্রিন ইকো গ্লো + জুম ইন এফেক্ট */
.card-style-3 .tech-badge { background: #00f5d4; box-shadow: 0 0 15px rgba(0, 245, 212, 0.4); color: #000; }
.card-style-3 .tech-avatar { border-color: #00f5d4; }
.card-style-3 .tech-meta span { color: #00f5d4; }
.card-style-3.reveal {
    opacity: 1;
    animation: zoomIn 0.8s ease forwards;
}
.card-style-3:hover {
    transform: translateY(-10px) rotate(1deg);
    border-color: #00f5d4;
    box-shadow: 0 10px 30px rgba(0, 245, 212, 0.25);
}

/* Keyframe Animations */
@keyframes slideLeft {
    from { opacity: 0; transform: translateX(-50px); }
    to { opacity: 1; transform: translateX(0); }
}

@keyframes flipUp {
    from { opacity: 0; transform: translateY(60px) rotateX(-20deg); }
    to { opacity: 1; transform: translateY(0) rotateX(0); }
}

@keyframes zoomIn {
    from { opacity: 0; transform: scale(0.8); }
    to { opacity: 1; transform: scale(1); }
}

/* Tech Map Section Styling */
.tech-map-wrapper {
    padding: 80px 0;
    background-color: #0b0f19; /* একই আইটি ডার্ক ব্যাকগ্রাউন্ড */
    color: #ffffff;
    font-family: 'Inter', sans-serif;
    overflow: hidden;
}

.map-container-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 50px;
    padding: 0 20px;
    align-items: center;
}

/* Left Info Box */
.map-info-box {
    opacity: 0;
    transform: translateX(-50px);
    transition: all 0.8s ease;
}

.tech-sub {
    color: #00f2fe;
    font-family: 'Orbitron', sans-serif;
    font-size: 0.85rem;
    letter-spacing: 2px;
    text-transform: uppercase;
    display: block;
    margin-bottom: 10px;
}

.map-info-box h2 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 20px;
    background: linear-gradient(45deg, #fff, #8a99ad);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.map-info-box p {
    color: #8a99ad;
    line-height: 1.6;
    margin-bottom: 30px;
}

.info-items {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.info-item {
    display: flex;
    align-items: center;
    gap: 20px;
    background: rgba(255, 255, 255, 0.02);
    padding: 15px 20px;
    border-radius: 12px;
    border: 1px solid rgba(255, 255, 255, 0.05);
    transition: transform 0.3s ease;
}

.info-item:hover {
    transform: translateX(5px);
    border-color: rgba(0, 242, 254, 0.3);
}

.info-icon {
    font-size: 1.5rem;
    background: rgba(0, 242, 254, 0.1);
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    color: #00f2fe;
}

.info-text h4 {
    font-size: 1rem;
    margin: 0 0 5px 0;
    color: #fff;
}

.info-text p {
    margin: 0;
    font-size: 0.9rem;
    color: #8a99ad;
}

/* Right Map Frame Box */
.map-frame-box {
    height: 450px;
    border-radius: 24px;
    overflow: hidden;
    border: 2px solid rgba(79, 172, 254, 0.2);
    box-shadow: 0 0 30px rgba(79, 172, 254, 0.1);
    opacity: 0;
    transform: scale(0.9);
    transition: all 0.8s cubic-bezier(0.25, 1, 0.5, 1);
}

/* Map Hover Glow Effect */
.map-frame-box:hover {
    border-color: #00f2fe;
    box-shadow: 0 0 40px rgba(0, 242, 254, 0.25);
}

.map-frame-box iframe {
    filter: grayscale(1) invert(1) contrast(1.2); /* ম্যাপটিকে জোস ডার্ক মোড লুক দেওয়ার জন্য */
    transition: filter 0.5s ease;
}

.map-frame-box:hover iframe {
    filter: grayscale(0) invert(0) contrast(1); /* হোভার করলে ম্যাপ নরমাল কালারে আসবে */
}

/* Animation Reveal Classes */
.map-info-box.reveal {
    opacity: 1;
    transform: translateX(0);
}

.map-frame-box.reveal {
    opacity: 1;
    transform: scale(1);
}

/* Tech Footer Styling */
.tech-footer {
    background-color: #060911; /* আগের ডার্ক থিমের চেয়ে আরেকটু ডিপ ডার্ক */
    color: #ffffff;
    font-family: 'Inter', sans-serif;
    padding: 70px 0 20px 0;
    border-top: 1px solid rgba(0, 242, 254, 0.1); /* টপ বর্ডারে হালকা নিওন টাচ */
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.8s ease;
}

.footer-container {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 40px;
    padding: 0 20px;
}

/* Column Common Styling */
.footer-col h3 {
    font-family: 'Orbitron', sans-serif;
    font-size: 1.1rem;
    color: #fff;
    margin-bottom: 25px;
    letter-spacing: 1px;
    position: relative;
}

.footer-col h3::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 0;
    width: 35px;
    height: 2px;
    background: #00f2fe; /* নিওন আন্ডারলাইন */
}

/* Brand Column */
.footer-logo {
    font-family: 'Orbitron', sans-serif;
    font-size: 1.5rem;
    font-weight: 700;
    color: #fff;
    margin-bottom: 20px;
}

.footer-logo span {
    color: #00f2fe;
}

.brand-col p {
    color: #8a99ad;
    font-size: 0.9rem;
    line-height: 1.6;
    margin-bottom: 25px;
}

/* Social Icons Animation */
.social-links {
    display: flex;
    gap: 12px;
}

.social-icon {
    width: 38px;
    height: 38px;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.1);
    color: #8a99ad;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    transition: all 0.3s ease;
    text-decoration: none;
}

.social-icon:hover {
    color: #00f2fe;
    border-color: #00f2fe;
    box-shadow: 0 0 15px rgba(0, 242, 254, 0.4);
    transform: translateY(-3px);
}

/* Links Styling & Hover Animation */
.footer-links {
    list-style: none;
    padding: 0;
    margin: 0;
}

.footer-links li {
    margin-bottom: 12px;
}

.footer-links a {
    color: #8a99ad;
    text-decoration: none;
    font-size: 0.9rem;
    transition: all 0.3s ease;
    display: inline-block;
}

.footer-links a:hover {
    color: #00f2fe;
    transform: translateX(5px); /* হোভার করলে হালকা ডান পাশে সরবে */
}

/* Newsletter Input Form */
.newsletter-col p {
    color: #8a99ad;
    font-size: 0.9rem;
    line-height: 1.5;
    margin-bottom: 15px;
}

.footer-form {
    display: flex;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 8px;
    overflow: hidden;
    transition: border-color 0.3s ease;
}

.footer-form:focus-within {
    border-color: #00f2fe;
    box-shadow: 0 0 10px rgba(0, 242, 254, 0.2);
}

.footer-form input {
    background: transparent;
    border: none;
    padding: 12px 15px;
    color: #fff;
    font-size: 0.9rem;
    outline: none;
    width: 100%;
}

.footer-form button {
    background: #00f2fe;
    border: none;
    color: #060911;
    padding: 0 20px;
    cursor: pointer;
    font-size: 1rem;
    transition: background 0.3s ease;
}

.footer-form button:hover {
    background: #4facfe;
}

/* Footer Bottom Section */
.footer-bottom {
    margin-top: 60px;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    padding-top: 20px;
    text-align: center;
}

.footer-bottom p {
    color: #576575;
    font-size: 0.85rem;
    margin: 0;
}

/* JS Reveal Class */
.tech-footer.reveal {
    opacity: 1;
    transform: translateY(0);
}

/* Tech Footer Styling */
.tech-footer {
    background-color: #060911; /* আগের ডার্ক থিমের চেয়ে আরেকটু ডিপ ডার্ক */
    color: #ffffff;
    font-family: 'Inter', sans-serif;
    padding: 70px 0 20px 0;
    border-top: 1px solid rgba(0, 242, 254, 0.1); /* টপ বর্ডারে হালকা নিওন টাচ */
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.8s ease;
}

.footer-container {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 40px;
    padding: 0 20px;
}

/* Column Common Styling */
.footer-col h3 {
    font-family: 'Orbitron', sans-serif;
    font-size: 1.1rem;
    color: #fff;
    margin-bottom: 25px;
    letter-spacing: 1px;
    position: relative;
}

.footer-col h3::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 0;
    width: 35px;
    height: 2px;
    background: #00f2fe; /* নিওন আন্ডারলাইন */
}

/* Brand Column */
.footer-logo {
    font-family: 'Orbitron', sans-serif;
    font-size: 1.5rem;
    font-weight: 700;
    color: #fff;
    margin-bottom: 20px;
}

.footer-logo span {
    color: #00f2fe;
}

.brand-col p {
    color: #8a99ad;
    font-size: 0.9rem;
    line-height: 1.6;
    margin-bottom: 25px;
}

/* Social Icons Animation */
.social-links {
    display: flex;
    gap: 12px;
}

.social-icon {
    width: 38px;
    height: 38px;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.1);
    color: #8a99ad;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    transition: all 0.3s ease;
    text-decoration: none;
}

.social-icon:hover {
    color: #00f2fe;
    border-color: #00f2fe;
    box-shadow: 0 0 15px rgba(0, 242, 254, 0.4);
    transform: translateY(-3px);
}

/* Links Styling & Hover Animation */
.footer-links {
    list-style: none;
    padding: 0;
    margin: 0;
}

.footer-links li {
    margin-bottom: 12px;
}

.footer-links a {
    color: #8a99ad;
    text-decoration: none;
    font-size: 0.9rem;
    transition: all 0.3s ease;
    display: inline-block;
}

.footer-links a:hover {
    color: #00f2fe;
    transform: translateX(5px); /* হোভার করলে হালকা ডান পাশে সরবে */
}

/* Newsletter Input Form */
.newsletter-col p {
    color: #8a99ad;
    font-size: 0.9rem;
    line-height: 1.5;
    margin-bottom: 15px;
}

.footer-form {
    display: flex;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 8px;
    overflow: hidden;
    transition: border-color 0.3s ease;
}

.footer-form:focus-within {
    border-color: #00f2fe;
    box-shadow: 0 0 10px rgba(0, 242, 254, 0.2);
}

.footer-form input {
    background: transparent;
    border: none;
    padding: 12px 15px;
    color: #fff;
    font-size: 0.9rem;
    outline: none;
    width: 100%;
}

.footer-form button {
    background: #00f2fe;
    border: none;
    color: #060911;
    padding: 0 20px;
    cursor: pointer;
    font-size: 1rem;
    transition: background 0.3s ease;
}

.footer-form button:hover {
    background: #4facfe;
}

/* Footer Bottom Section */
.footer-bottom {
    margin-top: 60px;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    padding-top: 20px;
    text-align: center;
}

.footer-bottom p {
    color: #576575;
    font-size: 0.85rem;
    margin: 0;
}

/* JS Reveal Class */
.tech-footer.reveal {
    opacity: 1;
    transform: translateY(0);
}

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600&family=Space+Grotesk:wght@500;700&display=swap');

/* --- সেকশন কোর লেআউট --- */
#our-service {
  background-color: #0a0b10;
  font-family: 'Inter', sans-serif;
  color: #f3f4f6;
  padding: 60px 20px;
  display: flex;
  justify-content: center;
}

.service-main-wrapper {
  max-width: 1400px;
  width: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 50px;
}

/* --- হেডার বাটন স্টাইল --- */
.service-header-btn {
  background: linear-gradient(135deg, rgba(255,255,255,0.05) 0%, rgba(255,255,255,0.01) 100%);
  border: 1px solid rgba(255, 255, 255, 0.1);
  padding: 14px 28px;
  border-radius: 100px;
  cursor: pointer;
  position: relative;
  overflow: hidden;
  backdrop-filter: blur(10px);
  transition: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

.service-header-btn:hover {
  border-color: rgba(255, 255, 255, 0.3);
  box-shadow: 0 0 25px rgba(255, 255, 255, 0.05);
  transform: translateY(-2px);
}

.service-header-btn span {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 1.2rem;
  font-weight: 700;
  background: linear-gradient(120deg, #fff 40%, #a5b4fc 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

/* --- রেসপন্সিভ কার্ড গ্রিড --- */
.service-cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(310px, 1fr));
  gap: 25px;
  width: 100%;
}

/* --- আল্ট্রা-স্মুথ 3D ফ্লিপ কার্ড মেকানিজম --- */
.srv-card-container {
  perspective: 1200px;
  height: 400px;
}

.srv-flip-card {
  position: relative;
  width: 100%;
  height: 100%;
  transform-style: preserve-3d;
  transition: transform 0.7s cubic-bezier(0.4, 0, 0.2, 1);
  border-radius: 16px;
}

/* মাউস হোভার করলে উল্টে যাবে */
.srv-card-container:hover .srv-flip-card {
  transform: rotateY(180deg);
}

/* ফ্রন্ট এবং ব্যাক পার্টের কমন স্টাইল */
.srv-front, .srv-back {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  backface-visibility: hidden;
  border-radius: 16px;
  background: rgba(18, 20, 29, 0.75);
  border: 1px solid hsl(var(--card-hue), 25%, 20%);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  backdrop-filter: blur(10px);
  transition: border-color 0.5s, box-shadow 0.5s;
}

/* হোভার করলে নিওন গ্লো ইফেক্ট */
.srv-card-container:hover .srv-front,
.srv-card-container:hover .srv-back {
  border-color: hsl(var(--card-hue), 80%, 50%);
  box-shadow: 0 0 25px -5px hsl(var(--card-hue), 50%, 25%);
}

/* --- সামনের অংশ (Front Side) --- */
.srv-figure {
  position: relative;
  margin: 0;
  width: 100%;
  height: 160px;
  overflow: hidden;
}

.srv-figure img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: brightness(75%);
  transition: transform 0.6s ease;
}

.srv-card-container:hover .srv-figure img {
  transform: scale(1.05);
}

.srv-img-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to bottom, transparent 40%, #0a0b10 100%);
  z-index: 1;
}

.srv-caption {
  position: absolute;
  bottom: 12px;
  left: 20px;
  z-index: 2;
  font-family: 'Space Grotesk', sans-serif;
  font-size: 1.3rem;
  font-weight: 700;
  text-shadow: 0 2px 8px rgba(0,0,0,0.6);
}

/* টেক্সট লিস্ট ডিজাইন */
.srv-list {
  list-style: none;
  padding: 20px;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.srv-list li {
  font-size: 0.9rem;
  color: #9ca3af;
  display: flex;
  align-items: center;
  gap: 10px;
  transition: color 0.3s;
}

/* লিস্টের কাস্টম নিওন ডট */
.srv-list li::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: hsl(var(--card-hue), 80%, 60%);
  box-shadow: 0 0 8px hsl(var(--card-hue), 100%, 60%);
  flex-shrink: 0;
}

.srv-card-container:hover .srv-list li {
  color: #f3f4f6;
}

/* --- পেছনের অংশ (Back Side) --- */
.srv-back {
  transform: rotateY(180deg);
  justify-content: space-between;
  align-items: center;
  padding: 25px 20px;
}

.srv-back .srv-figure {
  height: 130px;
  border-radius: 10px;
}

/* কাস্টম অ্যাকশন বাটন */
.srv-action-btn {
  width: 100%;
  background: hsl(var(--card-hue), 70%, 45%);
  color: #fff;
  border: none;
  padding: 12px;
  border-radius: 10px;
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  z-index: 2;
  transition: all 0.3s ease;
  box-shadow: 0 4px 12px hsl(var(--card-hue), 60%, 15%);
}

.srv-action-btn:hover {
  background: hsl(var(--card-hue), 85%, 55%);
  box-shadow: 0 0 20px hsl(var(--card-hue), 100%, 50%);
  transform: translateY(-2px);
}

/* ব্যাকগ্রাউন্ডের টেক কর্নার লাইন ডেকোরেশন */
.srv-design-box {
  position: absolute;
  inset: 0;
  pointer-events: none;
  opacity: 0.15;
  transition: opacity 0.5s;
}

.srv-card-container:hover .srv-design-box {
  opacity: 0.35;
}

.srv-line {
  position: absolute;
  background: hsl(var(--card-hue), 100%, 70%);
}

.srv-line--1 { top: 12px; left: 12px; width: 15px; height: 1px; }
.srv-line--2 { top: 12px; left: 12px; width: 1px; height: 15px; }
.srv-line--3 { top: 12px; right: 12px; width: 15px; height: 1px; }
.srv-line--4 { top: 12px; right: 12px; width: 1px; height: 15px; }
.srv-line--5 { bottom: 12px; left: 12px; width: 15px; height: 1px; }
.srv-line--6 { bottom: 12px; left: 12px; width: 1px; height: 15px; }
.srv-line--7 { bottom: 12px; right: 12px; width: 15px; height: 1px; }
.srv-line--8 { bottom: 12px; right: 12px; width: 1px; height: 15px; }

/* ফিক্সড ফ্লোটিং হোয়াটসঅ্যাপ বাটন */
.whatsapp-floating-btn {
    position: fixed;
    bottom: 30px;      /* স্ক্রিনের নিচ থেকে দূরত্ব */
    right: 30px;       /* স্ক্রিনের ডানপাশ থেকে দূরত্ব */
    width: 60px;
    height: 60px;
    background-color: #25D366;
    color: #fff !important;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 35px;   /* আইকনের সাইজ */
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.3);
    z-index: 9999;     /* যেন সবসময় সব এলিমেন্টের উপরে থাকে */
    text-decoration: none;
    transition: transform 0.3s ease, background-color 0.3s ease;
    animation: whatsappPulseEffect 2s infinite;
}

/* হোভার এফেক্ট */
.whatsapp-floating-btn:hover {
    background-color: #128C7E;
    transform: scale(1.1);
}

/* গ্লোয়িং পালস অ্যানিমেশন */
@keyframes whatsappPulseEffect {
    0% {
        box-shadow: 0 0 0 0 rgba(37, 211, 102, 0.7);
    }
    70% {
        box-shadow: 0 0 0 15px rgba(37, 211, 102, 0);
    }
    100% {
        box-shadow: 0 0 0 0 rgba(37, 211, 102, 0);
    }
}


/* --- 3D Glassmorphism Navbar --- */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 50px;
    /* আধুনিক গ্লাস ইফেক্ট ব্যাকগ্রাউন্ড */
    background: rgba(15, 23, 42, 0.6); 
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3), 
                inset 0 1px 0 rgba(255, 255, 255, 0.1);
    z-index: 10000;
    perspective: 1000px; /* 3D স্পেস তৈরি করার জন্য */
    box-sizing: border-box;
}

/* --- 3D Logo --- */
.navbar .logo {
    font-size: 24px;
    font-weight: 800;
    color: #fff;
    letter-spacing: 1px;
    cursor: pointer;
    transition: transform 0.3s ease;
    text-shadow: 0 2px 5px rgba(0,0,0,0.3);
}
.navbar .logo:hover {
    transform: translateZ(20px) scale(1.05);
}
.navbar .logo .logo-ltd {
    color: #00d2ff;
    text-shadow: 0 0 10px rgba(0, 210, 255, 0.5);
}

/* --- Nav Links 3D Hover --- */
.navbar .nav-links {
    display: flex;
    list-style: none;
    gap: 30px;
    align-items: center;
    margin: 0;
    padding: 0;
}
.navbar .nav-links li {
    perspective: 500px;
}
.navbar .nav-links li a:not(.btn) {
    position: relative;
    display: inline-block;
    color: #cbd5e1;
    text-decoration: none;
    font-size: 16px;
    font-weight: 500;
    padding: 8px 12px;
    text-transform: capitalize;
    transition: transform 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275), color 0.3s;
    transform-style: preserve-3d;
}

/* লিঙ্ক হোভার অ্যানিমেশন (3D Pop-up & Glow) */
.navbar .nav-links li a:not(.btn):hover {
    color: #00d2ff;
    transform: translateY(-5px) translateZ(15px) rotateX(10deg);
}
.navbar .nav-links li a:not(.btn)::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 12px;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, #00d2ff, #00ff87);
    box-shadow: 0 0 8px #00d2ff;
    transition: width 0.3s ease;
}
.navbar .nav-links li a:not(.btn):hover::after {
    width: calc(100% - 24px);
}

/* --- 3D WhatsApp Button in Navbar --- */
.navbar .nav-links .whatsapp-3d {
    background: linear-gradient(135deg, #25D366, #128C7E);
    color: #fff;
    padding: 10px 22px;
    border-radius: 50px;
    font-weight: 600;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    box-shadow: 0 4px 15px rgba(37, 211, 102, 0.3), 
                inset 0 -3px 0 rgba(0,0,0,0.2),
                inset 0 2px 0 rgba(255,255,255,0.3);
    transition: transform 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275), box-shadow 0.3s;
    transform-style: preserve-3d;
}
.navbar .nav-links .whatsapp-3d:hover {
    transform: translateY(-4px) translateZ(20px) scale(1.03);
    box-shadow: 0 8px 25px rgba(37, 211, 102, 0.5), 
                inset 0 -1px 0 rgba(0,0,0,0.2),
                inset 0 2px 0 rgba(255,255,255,0.4);
}
.navbar .nav-links .whatsapp-3d i {
    font-size: 18px;
    transition: transform 0.3s ease;
}
.navbar .nav-links .whatsapp-3d:hover i {
    transform: rotate(15deg) scale(1.1);
}

/* --- Mobile Menu Button --- */
.navbar .menu-btn {
    color: #fff;
    font-size: 22px;
    cursor: pointer;
    display: none; /* আপনার রেসপনসিভ মিডিয়া কুয়েরি অনুযায়ী এটি হ্যান্ডেল হবে */
    transition: transform 0.3s ease;
}
.navbar .menu-btn:hover {
    transform: scale(1.1) rotate(90deg);
    color: #00d2ff;
}


/* ==========================================================================
   ১. কোর লেআউট ও গ্লোবাল রিসেট (Premium UI)
   ========================================================================== */
.service-main-wrapper {
  padding: 4rem 2rem;
  background-color: #0b0f19;
  font-family: 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  color: #ffffff;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 3.5rem;
}

/* সেকশন হেডার বাটন */
.service-header-btn {
  background: linear-gradient(135deg, rgba(255,255,255,0.05), rgba(255,255,255,0.01));
  border: 1px solid rgba(255, 255, 255, 0.1);
  padding: 1rem 2.5rem;
  border-radius: 50px;
  cursor: pointer;
  backdrop-filter: blur(10px);
  box-shadow: 0 20px 40px rgba(0,0,0,0.3);
  transition: all 0.4s cubic-bezier(0.25, 1, 0.5, 1);
}

.service-header-btn span {
  font-size: 1.25rem;
  font-weight: 600;
  letter-spacing: 1px;
  background: linear-gradient(90deg, #ff7b00, #ffae00, #00e5ff, #7000ff);
  background-size: 300% auto;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  animation: shineText 6s linear infinite;
}

.service-header-btn:hover {
  transform: translateY(-5px);
  border-color: rgba(255, 255, 255, 0.25);
  box-shadow: 0 25px 50px rgba(0, 229, 255, 0.15);
}

/* গ্রিড লেআউট */
.service-cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 2.5rem;
  width: 100%;
  max-width: 1300px;
  perspective: 2000px; /* ৩D ইফেক্টের জন্য জরুরি */
}

/* ==========================================================================
   ২. ৩D ফ্লিপ কার্ড কোর আর্কিটেকচার
   ========================================================================== */
.srv-card-container {
  height: 450px;
  perspective: 1500px;
}

.srv-flip-card {
  position: relative;
  width: 100%;
  height: 100%;
  transform-style: preserve-3d;
  transition: transform 0.8s cubic-bezier(0.34, 1.56, 0.64, 1);
}

/* মাউস হোভার করলে কার্ড ফ্লিপ হবে */
.srv-card-container:hover .srv-flip-card {
  transform: rotateY(180deg);
}

/* ফ্রন্ট ও ব্যাক সাইড কমন স্টাইল */
.srv-front, .srv-back {
  position: absolute;
  width: 100%;
  height: 100%;
  -webkit-backface-visibility: hidden;
  backface-visibility: hidden;
  border-radius: 24px;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.08);
  box-shadow: 0 15px 35px rgba(0, 0, 0, 0.4);
  display: flex;
  flex-direction: column;
}

/* ইমেজ ট্যাগ হাইড করা হলো আপনার রিকোয়েস্ট অনুযায়ী */
.srv-figure img, .srv-img-overlay {
  display: none !important;
}

/* ==========================================================================
   ৩. প্রিমিয়াম ইউনিক কালার ও ডাইনামিক ব্যাকগ্রাউন্ড গ্রাডিয়েন্ট
   ========================================================================== */
.srv-front {
  background: linear-gradient(145deg, 
    hsl(var(--card-hue), 25%, 12%) 0%, 
    hsl(var(--card-hue), 30%, 6%) 100%
  );
  padding: 2.5rem 2rem;
}

.srv-back {
  background: linear-gradient(145deg, 
    hsl(var(--card-hue), 40%, 8%) 0%, 
    hsl(var(--card-hue), 50%, 15%) 100%
  );
  transform: rotateY(180deg);
  justify-content: center;
  align-items: center;
  padding: 2rem;
}

/* গ্লোয়িং বর্ডার ইফেক্ট অন হোভার */
.srv-card-container:hover .srv-front,
.srv-card-container:hover .srv-back {
  border-color: hsla(var(--card-hue), 80%, 60%, 0.4);
  box-shadow: 0 20px 50px hsla(var(--card-hue), 70%, 40%, 0.25);
}

/* ==========================================================================
   ৪. টাইপোগ্রাফি এবং টেক্সট অ্যানিমেশন (Premium UX)
   ========================================================================== */
.srv-figure {
  margin: 0 0 1.5rem 0;
}

.srv-caption {
  font-size: 1.6rem;
  font-weight: 700;
  letter-spacing: 0.5px;
  color: #ffffff;
  position: relative;
  padding-bottom: 0.75rem;
}

/* ক্যাপশনের নিচে ডাইনামিক কালার বার */
.srv-caption::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 50px;
  height: 4px;
  border-radius: 2px;
  background: hsl(var(--card-hue), 90%, 55%);
  transition: width 0.4s ease;
}

.srv-card-container:hover .srv-caption::after {
  width: 90px;
}

/* ফিচার লিস্ট স্টাইল */
.srv-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 0.9rem;
}

.srv-list li {
  font-size: 0.95rem;
  color: #b0b7c6;
  display: flex;
  align-items: center;
  gap: 10px;
  transform: translateX(0);
  transition: all 0.3s ease;
}

/* বুলেট পয়েন্টের জায়গায় কাস্টম ডট */
.srv-list li::before {
  content: '→';
  color: hsl(var(--card-hue), 90%, 60%);
  font-weight: bold;
}

.srv-list li:hover {
  color: #ffffff;
  transform: translateX(5px);
}

/* ==========================================================================
   ৫. কার্ডের ব্যাক সাইড এবং বাটন অ্যানিমেশন (Flip & Reveal)
   ========================================================================== */

/* অ্যাকশন বাটন */
.srv-action-btn {
  background: linear-gradient(135deg, hsl(var(--card-hue), 85%, 55%), hsl(var(--card-hue), 70%, 40%));
  color: white;
  border: none;
  padding: 1rem 2.5rem;
  font-size: 1.1rem;
  font-weight: 600;
  border-radius: 14px;
  cursor: pointer;
  box-shadow: 0 10px 25px hsla(var(--card-hue), 80%, 40%, 0.4);
  z-index: 2;
  transform: scale(0.8);
  opacity: 0;
  transition: all 0.5s cubic-bezier(0.34, 1.56, 0.64, 1);
}

/* ফ্লিপ হওয়ার পর বাটনটি পপ-আপ অ্যানিমেশন হবে */
.srv-card-container:hover .srv-action-btn {
  transform: scale(1);
  opacity: 1;
  transition-delay: 0.3s; /* ৩D ডিলে */
}

.srv-action-btn:hover {
  transform: scale(1.05) translateY(-3px) !important;
  box-shadow: 0 15px 30px hsla(var(--card-hue), 90%, 50%, 0.6);
}

/* ব্যাকগ্রাউন্ড ডিজাইনার সাইবার গ্রিড লাইন */
.srv-design-box {
  position: absolute;
  inset: 0;
  opacity: 0.15;
  pointer-events: none;
}

.srv-line {
  position: absolute;
  background: hsl(var(--card-hue), 100%, 70%);
}

.srv-line--1 { top: 10%; left: 0; width: 100%; height: 1px; }
.srv-line--2 { top: 30%; left: 0; width: 100%; height: 1px; }
.srv-line--3 { left: 20%; top: 0; width: 1px; height: 100%; }
.srv-line--4 { left: 80%; top: 0; width: 1px; height: 100%; }

/* ==========================================================================
   ৬. কি-ফ্রেম অ্যানিমেশনস
   ========================================================================== */
@keyframes shineText {
  to {
    background-position: 300% center;
  }
}

/* রেসপন্সিভনেস ফিক্স */
@media (max-width: 768px) {
  .service-cards-grid {
    grid-template-columns: 1fr;
    padding: 0 1rem;
  }
  .srv-card-container {
    height: 420px;
  }
}
   




/* ডিফল্ট বড় স্ক্রিন (sm, lg) এর জন্য */
.menu-btn {
    display: none;
}

.nav-links {
    display: flex;
    list-style: none;
    align-items: center;
}

/* =======================================================
   মোবাইল স্ক্রিন (Small 'sm' এর নিচে: ৫৭৬ পিক্সেল)
   ======================================================= */
@media screen and (max-width: 576px) {
    .navbar {
        position: relative; /* ড্রপডাউন পজিশন ঠিক রাখার জন্য */
    }

    .menu-btn {
        display: block !important;
        font-size: 24px;
        cursor: pointer;
        z-index: 1001;
    }

    /* মোবাইল ড্রপডাউন অপশনগুলোর স্মুথ অ্যানিমেশন সেটআপ */
    .nav-links {
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        background-color: #1a1a1a; /* আপনার থিম কালার */
        flex-direction: column;
        padding: 20px 0;
        gap: 15px;

        /* শুরুতে মেনু লুকিয়ে থাকবে এবং ১০ পিক্সেল উপরে থাকবে */
        opacity: 0;
        visibility: hidden;
        transform: translateY(-10px); 
        
        /* এই ট্রানজিশনের কারণেই ডাইরেক্ট না এসে স্মুথলি আসবে */
        transition: all 0.4s cubic-bezier(0.25, 1, 0.5, 1);
        z-index: 1000;
    }

    /* টগল ক্লিক করার পর এই ক্লাসটি যুক্ত হলে মেনু স্মুথলি শো করবে */
    .nav-links.active {
        opacity: 1;
        visibility: visible;
        transform: translateY(0); /* নিজের অরিজিনাল পজিশনে নেমে আসবে */
    }

    .nav-links li {
        width: 100%;
        text-align: center;
    }

    .nav-links li a {
        display: block;
        padding: 10px 0;
        color: #fff;
        text-decoration: none;
    }
}



/*  */

.custom-slider-container {
    position: relative;
    height: 480px; /* ডেস্কটপের জন্য স্ট্যান্ডার্ড হাইট */
    border-radius: 16px;
    overflow: hidden;
    background-color: #0c0c0e;
    box-sizing: border-box;
}

/* প্রতিটি স্লাইড */
.custom-slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    opacity: 0;
    transition: opacity 0.8s ease-in-out;
    display: flex;
    align-items: center;
    justify-content: center;
}

.custom-slide.active {
    opacity: 1;
    position: relative;
}

/* ==========================================================================
   ২. টেক্সট ওভারলে - একদম মাঝখানে (Middle Align) করার জন্য
   ========================================================================== */
.overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.55); /* ছবির ওপর ডার্ক লেয়ার */
    display: flex;
    flex-direction: column;
    justify-content: center; /* উপর-নিচ থেকে একদম মাঝখানে */
    align-items: center;     /* ডান-বাম থেকে একদম মাঝখানে */
    text-align: center;      /* টেক্সট সেন্টারে থাকবে */
    padding: 20px;
    box-sizing: border-box;
}

/* সার্ভিসের নাম বা টাইটেল (যেমন: Premium Web Design) */
.overlay h1 {
    font-size: 3rem;
    font-weight: 700;
    color: #ffffff;
    margin: 0 0 12px 0;
    text-transform: capitalize;
    letter-spacing: 1px;
    text-shadow: 0 4px 12px rgba(0, 0, 0, 0.7); /* লেখা স্পষ্ট করার শ্যাডো */
    line-height: 1.2;
}

/* সাবটাইটেল (Modern IT Solutions) */
.overlay p {
    font-size: 1.2rem;
    color: #38bdf8; /* চমৎকার স্কাই ব্লু কালার */
    margin: 0;
    font-weight: 500;
    letter-spacing: 1.5px;
    text-transform: uppercase;
    text-shadow: 0 2px 8px rgba(0, 0, 0, 0.7);
}

/* ==========================================================================
   ৩. স্লাইডার কন্ট্রোল বাটন ও ডটস (Navigation & Dots)
   ========================================================================== */
.slider-btn {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.25);
    color: #ffffff;
    padding: 14px 18px;
    cursor: pointer;
    border-radius: 50%;
    font-size: 18px;
    transition: all 0.3s ease;
    z-index: 5;
}

.slider-btn:hover {
    background: #2563eb;
    border-color: #2563eb;
    box-shadow: 0 0 15px rgba(37, 99, 235, 0.5);
}

.prev-btn { left: 25px; }
.next-btn { right: 25px; }

/* ডটসের পজিশন */
.slider-dots {
    position: absolute;
    bottom: 25px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 10px;
    z-index: 5;
}

.dot {
    width: 12px;
    height: 12px;
    background: rgba(255, 255, 255, 0.35);
    border-radius: 50%;
    cursor: pointer;
    transition: all 0.3s ease;
}

.dot.active {
    background: #2563eb;
    transform: scale(1.25);
    box-shadow: 0 0 8px #2563eb;
}

/* ==========================================================================
   ৪. কন্টাক্ট বাটন - স্লাইডারের নিচে এবং সেন্টারে (Contact Button)
   ========================================================================== */
.sahin-wrapper {
    position: absolute;
    bottom: 60px; /* স্লাইডারের নিচের অংশে সুন্দর পজিশন */
    left: 50%;
    transform: translateX(-50%);
    z-index: 10;
    display: flex;
    justify-content: center;
    align-items: center;
}

.sahin {
    background: #2563eb; /* রয়্যাল ব্লু ব্যাকগ্রাউন্ড */
    border: 1px solid rgba(255, 255, 255, 0.2);
    padding: 10px 28px;
    border-radius: 50px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(37, 99, 235, 0.4);
}

.sahin-svg {
    width: 18px;
    height: 18px;
    color: #ffffff;
    fill: none;
}

.sahin-txt-wrapper {
    display: flex;
    align-items: center;
}

.sahin-txt-1 {
    display: flex;
    gap: 1.5px;
}

.sahin-letter {
    font-size: 0.95rem;
    font-weight: 600;
    color: #ffffff;
    text-transform: lowercase;
}

/* হোভার ইফেক্ট */
.sahin:hover {
    background: #1d4ed8;
    box-shadow: 0 6px 20px rgba(29, 78, 216, 0.6);
    transform: scale(1.03);
}

/* ==========================================================================
   ৫. ১০০% রেসপন্সিভ মিডিয়া কোয়েরি (Responsive Media Queries)
   ========================================================================== */

/* ট্যাবলেট স্ক্রিন (992px বা তার নিচে) */
@media (max-width: 992px) {
    .custom-slider-container {
        height: 400px; /* ট্যাবলেটের জন্য হাইট কিছুটা কমানো হলো */
    }

    .overlay h1 {
        font-size: 2.3rem; /* টাইটেল সাইজ অপ্টিমাইজড */
    }

    .overlay p {
        font-size: 1rem;
    }
}

/* মোবাইল স্ক্রিন (576px বা তার নিচে) - কোনো লেখা বা বাটন ভাঙবে না */
@media (max-width: 576px) {
    .custom-slider-container {
        height: 320px; /* মোবাইলের জন্য পারফেক্ট হাইট */
    }

    .overlay {
        padding: 15px;
    }

    .overlay h1 {
        font-size: 1.7rem; /* মোবাইলে লেখা সুন্দরভাবে এক লাইনে বা সুন্দরভাবে ফিট হবে */
        margin-bottom: 8px;
    }

    .overlay p {
        font-size: 0.85rem;
        letter-spacing: 1px;
    }

    .slider-btn {
        padding: 10px 14px;
        font-size: 14px;
    }

    .prev-btn { left: 10px; }
    .next-btn { right: 10px; }

    .sahin-wrapper {
        bottom: 50px; /* মোবাইলে বাটনের পজিশন অ্যাডজাস্টমেন্ট */
    }

    .sahin {
        padding: 8px 20px;
    }

    .sahin-letter {
        font-size: 0.85rem;
    }
}

.sahin {
    background: #2563eb;
    border: 1px solid rgba(255, 255, 255, 0.2);
    padding: 13px 28px;
    border-radius: 50px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(37, 99, 235, 0.4);
    margin-top: 100px;
}



@media (min-width: 640px) {
  .service-cards-grid {
    grid-template-columns: repeat(2, 1fr); /* 2 columns on tablet */
  }
}

@media (min-width: 1024px) {
  .service-cards-grid {
    grid-template-columns: repeat(3, 1fr); /* 3 columns on desktop */
  }
}

/* Card Container & Flip Logic */
.srv-card-container {
  perspective: 1000px;
  height: 450px;
  width: 100%;
}

.srv-flip-card {
  position: relative;
  width: 100%;
  height: 100%;
  transition: transform var(--transition-speed);
  transform-style: preserve-3d;
  cursor: pointer;
}

.srv-card-container:hover .srv-flip-card {
  transform: rotateY(180deg);
}

.srv-front, .srv-back {
  position: absolute;
  width: 100%;
  height: 100%;
  -webkit-backface-visibility: hidden;
  backface-visibility: hidden;
  border-radius: 20px;
  overflow: hidden;
  background: var(--card-bg);
  border: 1px solid rgba(255,255,255,0.1);
  display: flex;
  flex-direction: column;
}

.srv-back {
  transform: rotateY(180deg);
  justify-content: center;
  align-items: center;
  padding: 2rem;
  background: linear-gradient(135deg, hsla(var(--card-hue), 30%, 20%, 1), hsla(var(--card-hue), 30%, 10%, 1));
}

/* Figure & Image Styling */
.srv-figure {
  position: relative;
  width: 100%;
  height: 200px;
}

.srv-figure img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.srv-img-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(to bottom, transparent, rgba(0,0,0,0.8));
}

.srv-caption {
  position: absolute;
  bottom: 1rem;
  left: 1rem;
  right: 1rem;
  font-size: 1.4rem;
  font-weight: 700;
  color: white;
}

/* List Styling */
.srv-list {
  list-style: none;
  padding: 1.5rem;
  flex-grow: 1;
}

.srv-list li {
  margin-bottom: 0.8rem;
  padding-left: 1.5rem;
  position: relative;
  font-size: 0.95rem;
  color: #cbd5e1;
}

.srv-list li::before {
  content: "→";
  position: absolute;
  left: 0;
  color: hsl(var(--card-hue), 80%, 60%);
}

/* Action Button on Back */
.srv-action-btn {
  background: hsl(var(--card-hue), 80%, 50%);
  color: white;
  border: none;
  padding: 0.8rem 2rem;
  border-radius: 10px;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.3s;
  z-index: 2;
}

.srv-action-btn:hover {
  background: hsl(var(--card-hue), 80%, 40%);
}

/* Design Box Lines */
.srv-design-box {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.srv-line {
  position: absolute;
  background: hsla(var(--card-hue), 80%, 60%, 0.2);
}

.srv-line--1 { top: 10%; left: 0; width: 100%; height: 1px; }
.srv-line--2 { top: 90%; left: 0; width: 100%; height: 1px; }
.srv-line--3 { left: 10%; top: 0; height: 100%; width: 1px; }
.srv-line--4 { left: 90%; top: 0; height: 100%; width: 1px; }
/* Add more as needed for the aesthetic */

/* Mobile adjustments for card height */
@media (max-width: 480px) {
  .srv-card-container {
    height: 400px;
  }
  .srv-figure {
    height: 160px;
  }
  .srv-caption {
    font-size: 1.2rem;
  }
}