/* Reset and base styles */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: 'Poppins', 'Montserrat', 'Segoe UI', sans-serif;
  color: #ffffff;
  background-color: #0b1d39;
  overflow-x: hidden;
  padding-top: 80px; /* account for fixed header */
  animation: fadeIn 1s ease-in-out;
}

/* HEADER */
header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  background: transparent;
  z-index: 1000;
  display: flex;
  align-items: center;
  padding: 20px 40px;
  flex-wrap: wrap;
  color: white;
}

.logo {
  font-size: 24px;
  font-weight: bold;
  flex: 1;
}

.header-center {
  flex: 1;
  text-align: center;
  font-weight: bold;
  font-size: 18px;
}

.header-right {
  display: flex;
  align-items: center;
  gap: 10px;
  flex: 1;
  justify-content: flex-end;
}

.signup-btn {
  background-color: #00cc66;
  color: white;
  padding: 8px 16px;
  border-radius: 5px;
  text-decoration: none;
}

/* HAMBURGER MENU */
.hamburger {
  display: none;
  flex-direction: column;
  justify-content: space-between;
  width: 28px;
  height: 22px;
  cursor: pointer;
  z-index: 1100;
}

.hamburger span {
  display: block;
  height: 3px;
  background-color: white;
  border-radius: 2px;
}

/* MOBILE MENU */
.mobile-menu {
  display: none;
  flex-direction: column;
  position: fixed;
  top: 0;
  right: 0;
  width: 100%;
  background: #0b1d39;
  padding: 60px 20px 30px;
  box-shadow: 0 0 15px rgba(0,0,0,0.5);
  z-index: 1099;
  animation: slideDown 0.4s ease forwards;
}

.mobile-menu.active {
  display: flex;
}

.menu-header {
  display: flex;
  justify-content: flex-end;
  margin-bottom: 20px;
}

.close-btn {
  font-size: 24px;
  color: white;
  cursor: pointer;
}

.mobile-menu select {
  margin-bottom: 15px;
  padding: 8px;
  border-radius: 4px;
  border: none;
  font-size: 1rem;
}

/* Animations */
@keyframes slideDown {
  from {
    transform: translateY(-100%);
    opacity: 0;
  }
  to {
    transform: translateY(0);
    opacity: 1;
  }
}

/* RESPONSIVE HEADER */
@media (max-width: 768px) {
  .header-right,
  .header-center {
    display: none;
  }

  .hamburger {
    display: flex;
  }
}
/* Slider navigation buttons */
button#prevBtn, button#nextBtn {
  position: fixed;
  top: 50%;
  transform: translateY(-50%);
  background: rgba(0, 0, 0, 0.4);
  border: none;
  font-size: 2.5rem;
  color: white;
  padding: 12px 16px;
  border-radius: 50%;
  cursor: pointer;
  z-index: 1101; /* hejuru ya header */
  user-select: none;
  transition: background-color 0.3s ease;
}

button#prevBtn:hover, button#nextBtn:hover {
  background: rgba(0, 0, 0, 0.7);
}

button#prevBtn {
  left: 20px;
}

button#nextBtn {
  right: 20px;
}

/* Responsive adjustments for buttons */
@media (max-width: 768px) {
  button#prevBtn, button#nextBtn {
    font-size: 2rem;
    padding: 10px 14px;
  }
}

/* HERO SECTION */
.hero-section {
  position: relative;
  padding: 100px 0;
  display: flex;
  align-items: center;
  min-height: calc(100vh - 80px);
  overflow: hidden; /* contain rounded corners */
}

.hero-content {
  flex: 1;
  max-width: 600px;
  z-index: 2;
}

.hero-content h1 {
  font-size: 64px;
  line-height: 1.2;
  margin-bottom: 20px;
  font-weight: 700;
}

.hero-content p {
  font-size: 18px;
  line-height: 1.6;
  color: #c0c0c0;
  max-width: 500px;
}

.hero-image-container {
  position: absolute;
  bottom: 0;
  right: 0;
  width: 900px;
  height: 500px;
  border-radius: 20px;
  overflow: hidden;
  transform: translateX(100px);
  background: linear-gradient(to right, #00c6ff, #0072ff);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
  z-index: 1;
}

.hero-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 20px;
}

/* Decorative Circles/Dots */
.decorative-circle {
  position: absolute;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(0,255,255,0.3) 0%, rgba(0,100,255,0) 70%);
  filter: blur(50px);
  z-index: 0;
}

.decorative-circle.top-left {
  width: 250px;
  height: 250px;
  top: -100px;
  left: -100px;
}

.decorative-circle.bottom-right {
  width: 350px;
  height: 350px;
  bottom: -150px;
  right: -150px;
  background: radial-gradient(circle, rgba(128,0,128,0.3) 0%, rgba(128,0,128,0) 70%);
}

.decorative-dot {
  position: absolute;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background-color: #00ffcc;
  filter: blur(5px);
  z-index: 5;
}

.decorative-dot.top-center {
  top: 150px;
  left: 50%;
  transform: translateX(-50%);
}

/* RESPONSIVE HERO */
@media (max-width: 992px) {
  .hero-section {
    flex-direction: column;
    text-align: center;
  }

  .hero-image-container {
    position: relative;
    transform: translateX(0);
    margin-top: 50px;
    width: 90%;
    height: auto;
  }

  .hero-content h1 {
    font-size: 48px;
  }
}

@media (max-width: 768px) {
  .hero-content h1 {
    font-size: 36px;
  }

  .hero-content p {
    font-size: 16px;
  }
}

/* SLIDER WRAPPER */
.slider-wrapper {
  display: flex;
  width: 300vw;
  transition: transform 0.8s ease;
}

.slide {
  width: 100vw;
  height: calc(100vh - 80px);
  flex-shrink: 0;
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 60px;
  flex-direction: column;
  position: relative;
}

/* SLIDE 1 */
.slide-1 {
  background: url('pc/pc1 (8).jpg') no-repeat center center / cover;
  position: relative;
  text-align: center;
  overflow: hidden;
  height: calc(100vh - 80px);
}

.slide-1::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, #030d33, #003537);
  opacity: 0.75;
  backdrop-filter: blur(3px);
  z-index: 1;
}

.slide-1 > * {
  position: relative;
  z-index: 2;
}

.slide-1 h1 {
  font-size: 3.5rem;
  text-shadow: 2px 2px 10px rgba(0, 0, 0, 0.7);
}

/* Text styles */
.welcome-text,
.subtitle {
  font-family: 'Inter', sans-serif;
  letter-spacing: 4px;
}

.welcome-text {
  color: #72d39c;
  margin-bottom: 20px;
  font-size: 1rem;
}

.main-title {
  font-size: 4rem;
  font-weight: 600;
  margin-bottom: 10px;
}

.main-title .green {
  color: #32c671;
}

.subtitle {
  color: #ffffff;
  margin-bottom: 40px;
  font-size: 1rem;
}

.subtitle .highlight {
  color: #32c671;
  font-weight: bold;
}

/* CTA BUTTON */
.cta-button {
  background-color: #32c671;
  color: #fff;
  padding: 14px 40px;
  font-size: 1rem;
  border: none;
  border-radius: 25px;
  cursor: pointer;
  transition: background-color 0.3s;
}

.cta-button:hover {
  background-color: #28a965;
}

.cta-button::after {
  content: ' >';
  font-size: 1.2rem;
  margin-left: 8px;
}

/* Floating Shapes */
.shape {
  position: absolute;
  width: 80px;
  height: 80px;
  background: linear-gradient(135deg, #4ea46a, #005c57);
  border-radius: 50%;
  opacity: 0.3;
  z-index: 2;
  animation: float 8s infinite ease-in-out;
}

.shape1 {
  top: 10%;
  left: 20%;
}

.shape2 {
  top: 70%;
  left: 10%;
  width: 60px;
  height: 60px;
}

.shape3 {
  top: 50%;
  left: 80%;
  width: 100px;
  height: 100px;
  border-radius: 20%;
}

.shape4 {
  bottom: 10%;
  right: 20%;
  width: 70px;
  height: 70px;
}

@keyframes float {
  0%, 100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-20px);
  }
}

/* SLIDE 2 */
.slide-2 {
  background: linear-gradient(90deg, #0b1d39, #063b37);
  flex-direction: row;
  gap: 40px;
  color: #d4d4d4;
}

.slide-2 .content {
  flex: 1;
  max-width: 550px;
}

.slide-2 h1 {
  font-size: 2.8rem;
  margin-bottom: 20px;
}

.slide-2 p {
  font-size: 1rem;
  line-height: 1.7;
}

/* IMAGES BOXES inside SLIDE 2 */
.images {
  flex: 1;
  position: relative; /* shyiramo ibi */
  display: flex;
  justify-content: center;
  min-height: 400px; /* shyiramo min height ukurikije uburebure ushaka */
}

/* Overlay label */
.image-box .label {
  position: absolute;
  bottom: 10px;
  left: 10px;
  background: rgba(0,0,0,0.6);
  color: #fff;
  padding: 8px 12px;
  border-radius: 8px;
  font-weight: bold;
  font-size: 14px;
}
.image-box img {
  width: 100%;
  display: block;
  border-radius: 16px;
  object-fit: cover;
  height: auto;
  max-height: 300px; 
  border: 4px solid #32c671;
  box-shadow: 0 0 20px rgba(0,0,0,0.2);
  background: #021c24;/* niba ushaka */
  /* Gena uko ushaka amafoto manini */
}



.img-top {
  width: 270px;
  position: absolute;
  top: 0;
  left: 60px;
  z-index: 2;
  max-height: 350px; /* shyiramo max-height kugirango amafoto atarenze */
  object-fit: cover; /* niba ari img element */
}

.img-bottom {
  width: 260px;
  position: absolute; /* guhindura relative > absolute */
  top: 150px; /* ushyire aho ushaka */
  left: 0;
  z-index: 1;
  max-height: 350px;
  object-fit: cover;
}

/* SLIDE 3 */
.slide-3 {
  background: url('pc/pc2(52).jpg') no-repeat center center / cover;
  position: relative;
  text-align: center;
  overflow: hidden;
  height: calc(100vh - 80px);
  flex-direction: column;
  color: white;
}

.slide-3::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, #030d33, #003537);
  opacity: 0.75;
  backdrop-filter: blur(3px);
  z-index: 1;
}

.slide-3 > * {
  position: relative;
  z-index: 2;
}

.slide-3 h1 {
  font-size: 3rem;
  margin-bottom: 40px;
}

/* FEATURES inside slide 3 */
.features {
  display: flex;
  justify-content: center;
  gap: 60px;
  flex-wrap: wrap;
  color: white;
}

.feature-box {
  max-width: 400px;
}

.feature-box h3 {
  color: #32c671;
  font-weight: 600;
  margin-bottom: 10px;
}

.feature-box p {
  color: #ccc;
  line-height: 1.6;
  margin-bottom: 20px;
}

.feature-box button {
  background: linear-gradient(to right, #32c671, #1e8b6b);
  color: white;
  border: none;
  padding: 12px 24px;
  border-radius: 30px;
  font-weight: bold;
  cursor: pointer;
  transition: opacity 0.3s;
}

.feature-box button:hover {
  opacity: 0.9;
}

/* SLIDES 4 to 11 (Generic styling) */
.slide-4, .slide-5, .slide-6, .slide-7, .slide-8, .slide-9, .slide-10, .slide-11 {
  background: linear-gradient(90deg, #0b1d39, #003537);
  display: flex;
  justify-content: center;
  align-items: center;
  flex-direction: column;
  color: white;
  text-align: center;
  padding: 40px;
}

.slide-4 h2, .slide-5 h2, .slide-6 h2, .slide-7 h2, .slide-8 h2, .slide-9 h2, .slide-10 h2, .slide-11 h2 {
  font-size: 2.5rem;
  margin-bottom: 20px;
}

.slide-4 p, .slide-5 p, .slide-6 p, .slide-7 p, .slide-8 p, .slide-9 p, .slide-10 p, .slide-11 p {
  max-width: 800px;
  font-size: 1.1rem;
  line-height: 1.6;
}

/* PRICING */
.pricing-container {
  display: flex;
  justify-content: center;
  align-items: flex-start;
  padding: 40px 20px;
  gap: 30px;
}

.plan {
  background: linear-gradient(to bottom right, #2c1a5e, #1e1241);
  border-radius: 20px;
  padding: 30px;
  width: 280px;
  box-shadow: 0 0 15px rgba(0,0,0,0.3);
}

.plan h3 {
  margin: 0;
  font-size: 1.5em;
}

.plan .price {
  font-size: 2.5em;
  font-weight: bold;
  margin: 10px 0;
}

.plan .desc {
  font-size: 0.9em;
  color: #ccc;
}

.plan ul {
  list-style: none;
  padding: 0;
  margin: 20px 0;
}

.plan ul li::before {
  content: '\2713'; /* checkmark */
  margin-right: 10px;
  color: #3cf;
}

.plan ul li {
  margin-bottom: 10px;
}

.plan button {
  background: white;
  color: black;
  font-weight: bold;
  padding: 10px 20px;
  border-radius: 30px;
  border: none;
  cursor: pointer;
  width: 100%;
}

.best-deal {
  border: 2px solid #aaa6ff;
  position: relative;
}

.best-deal::before {
  content: "#bestdeal";
  position: absolute;
  top: -15px;
  right: 15px;
  background: #aaa6ff;
  color: #000;
  padding: 3px 10px;
  font-size: 0.75em;
  border-radius: 8px;
}

/* RESPONSIVE ADJUSTMENTS */
@media (max-width: 960px) {
  .slide-2 {
    flex-direction: column;
    text-align: center;
  }

  .img-top, .img-bottom {
    position: relative;
    top: unset;
    left: unset;
    width: 80%;
  }
}

@media (max-width: 768px) {
  body {
    font-size: 14px;
  }

  .slide {
    flex-direction: column;
    text-align: center;
    padding: 30px 15px;
  }

  .main-title {
    font-size: 2.5rem;
  }

  .cta-button {
    font-size: 0.9rem;
    padding: 10px 25px;
  }

  header {
    flex-direction: column;
    align-items: flex-start;
    padding: 15px 20px;
  }

  .header-center {
    text-align: left;
    margin-top: 10px;
  }

  .pricing-container {
    flex-direction: column;
    align-items: center;
  }

  .plan {
    width: 90%;
  }
}

  /* --- Existing CSS content stays unchanged above --- */

/* ========================= */
/* BOTTOM ABOUT + FOOTER CSS */
/* ========================= */
#about-bop {
  background: linear-gradient(135deg, #0b1d39, #063b37);
  color: #ffffff;
  padding: 80px 40px;
  text-align: left;
  font-family: 'Poppins', sans-serif;
}

#about-bop h2 {
  font-size: 2.5rem;
  margin-bottom: 20px;
  color: #32c671;
}

#about-bop p {
  font-size: 1rem;
  line-height: 1.7;
  color: #dddddd;
}

#about-bop ul {
  margin-top: 20px;
  padding-left: 20px;
  list-style-type: none;
}

#about-bop ul li {
  margin-bottom: 10px;
  padding-left: 20px;
  position: relative;
  font-size: 1rem;
  color: #ffffff;
}

#about-bop ul li::before {
  content: '\2714';
  position: absolute;
  left: 0;
  color: #32c671;
  font-weight: bold;
}

#about-bop img {
  border-radius: 12px;
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.3);
  transition: transform 0.3s ease;
  max-width: 100%;
  height: auto;
}

#about-bop img:hover {
  transform: scale(1.03);
}

.testimonials {
  background-color: #042635;
  padding: 60px 20px;
  color: #ffffff;
  text-align: center;
  font-family: 'Poppins', sans-serif;
}

.testimonials h2 {
  color: #32c671;
  font-size: 2rem;
  margin-bottom: 30px;
}

.testimonial-box {
  background: #063b37;
  border-left: 5px solid #32c671;
  margin: 20px auto;
  max-width: 600px;
  padding: 20px;
  border-radius: 8px;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
  font-style: italic;
}

.testimonial-author {
  margin-top: 10px;
  text-align: right;
  font-weight: bold;
  color: #cccccc;
}

footer {
  background: #021524;
  color: #ccc;
  padding: 40px 20px;
  text-align: center;
  font-family: 'Poppins', sans-serif;
}

footer h3 {
  font-size: 1.8rem;
  color: #32c671;
  margin-bottom: 10px;
}

footer p {
  font-size: 0.95rem;
  line-height: 1.5;
  margin: 6px 0;
}

footer a {
  color: #32c671;
  text-decoration: none;
  margin: 0 10px;
  font-weight: 500;
}

footer a:hover {
  text-decoration: underline;
}

.footer-socials {
  margin-top: 20px;
}

.footer-socials a {
  margin: 0 10px;
  font-size: 1.5rem;
  color: #ffffff;
  transition: color 0.3s ease;
}

.footer-socials a:hover {
  color: #32c671;
}

@media (max-width: 768px) {
  #about-bop {
    text-align: center;
  }

  #about-bop > div {
    flex-direction: column;
    align-items: center;
  }

  #about-bop img {
    width: 90%;
    margin: auto;
  }

  .testimonial-box {
    margin: 20px;
  }
}

/* ========================= */
/* END BOTTOM STYLING       */
/* ========================= */
.company-portfolio {
  padding: 80px 20px;
  background: #0b1d39;
  color: #eee;
  text-align: center;
}

.company-portfolio h2 {
  font-size: 2.5rem;
  margin-bottom: 20px;
  color: #32c671;
}

.company-description, .highlights ul, .testimonial-section p {
  max-width: 800px;
  margin: 0 auto 20px;
  line-height: 1.7;
}

.highlights ul {
  list-style: none;
  padding: 0;
}

.highlights ul li {
  margin: 10px 0;
}

.company-gallery {
  display: flex;
  justify-content: center;
  gap: 20px;
  flex-wrap: wrap;
  margin: 40px 0;
}

.company-gallery img {
  width: 260px;
  border-radius: 10px;
  box-shadow: 0 5px 20px rgba(0,0,0,0.3);
}

.impact-stats {
  display: flex;
  justify-content: center;
  gap: 50px;
  font-size: 1.5rem;
  margin: 30px 0;
  color: #32c671;
}

.testimonials {
  display: flex;
  gap: 30px;
  flex-wrap: wrap;
  justify-content: center;
}

.testimonial {
  background: #021c24;
  padding: 20px;
  border-radius: 10px;
  max-width: 300px;
  font-style: italic;
}

.main-footer {
  background: #02141c;
  color: #ccc;
  padding: 60px 20px 30px;
}

.footer-content {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 30px;
}

.footer-column {
  flex: 1;
  min-width: 200px;
}

.footer-column h4 {
  color: #32c671;
  margin-bottom: 15px;
}

.footer-column ul {
  list-style: none;
  padding: 0;
}

.footer-column ul li {
  margin: 8px 0;
}

.footer-column ul li a {
  color: #ccc;
  text-decoration: none;
}

.footer-column ul li a:hover {
  text-decoration: underline;
}

.social-icons a {
  display: inline-block;
  margin-right: 10px;
}

.footer-bottom {
  text-align: center;
  margin-top: 30px;
  font-size: 0.9rem;
  color: #999;
}
#flipbook {
  display: flex;
  justify-content: center;
  align-items: center;
  overflow: hidden;
  margin: 60px auto;
  position: relative;
  width: 100%;
  max-width: 900px;
  height: 500px;
  perspective: 1500px;
  border-radius: 12px;
}

/* PAGE STYLING */
.page {
  position: absolute;
  width: 90%;
  height: 100%;
  backface-visibility: hidden;
  opacity: 0;
  transform: rotateY(90deg) scale(0.95);
  transition: all 1s ease-in-out;
  box-shadow: 0 15px 40px rgba(0, 0, 0, 0.3);
  border-radius: 16px;
  overflow: hidden;
  background-color: #fff;
}

.page.active {
  opacity: 1;
  transform: rotateY(0deg) scale(1);
  z-index: 10;
}

/* IMAGE STYLING */
.page img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

/* TEXT OVERLAY */
.page .overlay {
  position: absolute;
  bottom: 20px;
  left: 20px;
  color: #fff;
  z-index: 2;
  background: rgba(0,0,0,0.55);
  padding: 16px 20px;
  border-radius: 12px;
  max-width: 80%;
  box-shadow: 0 0 10px rgba(0,0,0,0.4);
  animation: fadeInUp 1s ease;
}

.page .overlay h3 {
  margin: 0 0 5px;
  font-size: 1.5rem;
  color: #32c671;
}

.page .overlay p {
  font-size: 1rem;
  line-height: 1.4;
}

/* ANIMATION */
@keyframes fadeInUp {
  from {
    transform: translateY(20px);
    opacity: 0;
  }
  to {
    transform: translateY(0);
    opacity: 1;
  }
}

/* GLOW EFFECT */
.page.active::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: 16px;
  box-shadow: 0 0 30px rgba(50, 198, 113, 0.6);
  z-index: 1;
  pointer-events: none;
}
 .chat-container {
      background: #ffffff;
      width: 90%;
      max-width: 600px;
      height: 80vh;
      margin-top: 40px;
      display: flex;
      flex-direction: column;
      border-radius: 12px;
      box-shadow: 0 8px 24px rgba(0,0,0,0.1);
      overflow: hidden;
    }

    .chat-header {
      background: #32c671;
      color: white;
      padding: 16px;
      font-weight: 600;
      font-size: 18px;
    }

    .chat-messages {
      flex: 1;
      padding: 16px;
      overflow-y: auto;
      background: #fefefe;
    }

    .message {
      margin-bottom: 16px;
    }

    .message .sender {
      font-weight: 600;
      color: #32c671;
    }

    .message .timestamp {
      font-size: 12px;
      color: #888;
    }

    .message .text {
      margin-top: 4px;
      background: #e0f7eb;
      padding: 10px;
      border-radius: 8px;
      display: inline-block;
      max-width: 80%;
    }

    .reply {
      background: #f1f1f1;
      padding: 10px;
      border-radius: 8px;
      margin-left: 20px;
      font-size: 14px;
      color: #333;
    }

    .chat-input {
      display: flex;
      border-top: 1px solid #ddd;
    }

    .chat-input input {
      flex: 1;
      padding: 14px;
      border: none;
      outline: none;
      font-size: 16px;
    }

    .chat-input button {
      background: #32c671;
      color: white;
      border: none;
      padding: 0 24px;
      cursor: pointer;
      font-size: 16px;
    }
    h2 {
      text-align: center;
      color: #1c1c1c;
    }

    .chat-pair {
      display: flex;
      justify-content: space-between;
      gap: 20px;
      margin: 30px auto;
      max-width: 800px;
    }

    .bubble {
      padding: 12px 16px;
      border-radius: 12px;
      max-width: 45%;
      font-size: 15px;
      line-height: 1.4;
      box-shadow: 0 3px 10px rgba(0,0,0,0.1);
      position: relative;
    }

    .boss {
      background-color: #32c671;
      color: white;
      align-self: flex-end;
      text-align: right;
    }

    .employee {
      background-color: #eef8f3;
      color: #1a1a1a;
      align-self: flex-start;
      text-align: left;
    }

    .manager {
      background-color: #0077b6;
      color: white;
      text-align: right;
    }

    .warehouse {
      background-color: #fff3cd;
      color: #000;
      text-align: left;
    }

    .timestamp {
      font-size: 11px;
      color: #777;
      margin-top: 6px;
    }
    .btn-3d {
      background: linear-gradient(145deg, #32c671, #28a85c);
      color: #fff;
      padding: 14px 28px;
      border: none;
      font-size: 1.1rem;
      font-weight: 600;
      border-radius: 12px;
      box-shadow: 0 5px 0 #1d6b3d;
      cursor: pointer;
      transition: all 0.2s ease;
    }
    
    .btn-3d:hover {
      transform: translateY(2px);
      box-shadow: 0 3px 0 #1d6b3d;
      background: linear-gradient(145deg, #28a85c, #32c671);
    }
    
    .btn-3d:active {
      transform: translateY(5px);
      box-shadow: 0 0 0 #1d6b3d;
    }
    .letter-animate {
      font-family: 'Poppins', sans-serif;
      font-size: 24px;
      font-weight: 600;
      color: #007BFF;
      text-align: center;
    }
    
    .letter-animate span {
      opacity: 0;
      transform: translateY(20px);
      display: inline-block;
      animation: letterIn 0.4s forwards;
    }
    
    @keyframes letterIn {
      to {
        opacity: 1;
        transform: translateY(0);
      }
    }
    
/* RESPONSIVE */
/* @media (max-width: 768px) {
  #flipbook {
    height: 360px;
  }

  .overlay h3 {
    font-size: 1.2rem;
  }

  .overlay p {
    font-size: 0.95rem;
  }
} */
.social-icons a {
  margin-right: 12px;
  color: #ffffff;
  font-size: 1.5rem;
  transition: color 0.3s ease;
}

.social-icons a:hover {
  color: #32c671; /* green glow on hover */
}
@media (prefers-color-scheme: dark) {
  body {
    background-color: #111;
    color: #eee;
  }
  .header, .footer { background: #222; }
}
#preloader {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: #ffffff;
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: center;
}

#preloader img {
  width: 150px;
  animation: spin 2s linear infinite;
}

@keyframes spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}