@import url('https://fonts.googleapis.com/css2?family=Ysabeau+Infant:wght@600&display=swap');
@import url('https://fonts.googleapis.com/css2?family=Ysabeau+Infant:wght@800&display=swap');

/* ========== RESET & BASE ========== */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --bg-dark: #0a1628;
  --bg-section: #2284df;
  --text-white: #ffffff;
  --text-muted: #f5f5f5;
  --btn-blue: #2284df;
  --btn-blue-hover: #2284df50;
  --nav-height: 80px;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: "Ysabeau Infant", sans-serif;
  font-optical-sizing: auto;
  font-weight: 600;
  font-style: normal;
  background-color: var(--bg-dark);
  color: var(--text-white);
  line-height: 1.6;
  overflow-x: hidden;
}


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

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

H1, H2, H3, H4, H5, H6 {
  font-family: "Ysabeau Infant", sans-serif;
  font-optical-sizing: auto;
  font-weight: 800;
  font-style: normal;
}

/* ========== NAVBAR ========== */
.navbar {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 100;
  padding: 1.25rem 4%;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo img {
  height: 48px;
  width: auto;
}

.nav-links {
  display: flex;
  gap: 2.5rem;
  list-style: none;
}

.nav-links a {
  color: var(--text-white);
  font-size: 1.05rem;
  font-weight: 500;
  letter-spacing: 0.3px;
  transition: color 0.25s ease, opacity 0.25s ease;
}

.nav-links a:hover {
  color: var(--btn-blue);
}

/* Mobile menu button */
.menu-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  z-index: 110;
}

.menu-toggle span {
  display: block;
  width: 26px;
  height: 2.5px;
  background: #fff;
  margin: 6px 0;
  border-radius: 2px;
  transition: all 0.3s ease;
}

/* ========== HERO SECTION ========== */
.hero {
  position: relative;
  width: 100%;
  min-height: 100vh;
  background: url('assets/hero-bg.jpg') center center / cover no-repeat;
  display: flex;
  align-items: center;
  padding: 0 4%;
}

.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(
    90deg,
    rgba(5, 12, 28, 0.85) 0%,
    rgba(5, 12, 28, 0.55) 45%,
    rgba(5, 12, 28, 0.25) 100%
  );
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 1400px;
  padding: 10rem;
}

.hero-content h1 {
  font-size: clamp(2.4rem, 5vw, 3.6rem);
  line-height: 1.15;
  margin-bottom: 2.25rem;
  letter-spacing: -0.5px;
}

.hero-content p {
  font-size: clamp(1rem, 2.2vw, 1.7rem);
  color: var(--text-muted);
  margin-bottom: 2.5rem;
  max-width: 800px;
}

.hero-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}

.btn {
  display: inline-block;
  padding: 0.6rem 1.5rem;
  background: var(--btn-blue);
  color: #fff;
  text-align: center;
  font-size: 1.25rem;
  font-weight: 600;
  border: none;
  border-radius: 4px;
  cursor: pointer;
  transition: background 0.25s ease, transform 0.2s ease;
}

.btn:hover {
  background: var(--btn-blue-hover);
  box-shadow: 1px 1px 5px #2284df70;
}

.btn-YT
{
  display: inline-block;
  padding: 0.85rem 2rem;
  background: #ff0000;
  color: #fff;
  text-align: center;
  font-size: 1rem;
  font-weight: 600;
  border: none;
  border-radius: 4px;
  cursor: pointer;
  transition: background 0.25s ease, transform 0.2s ease;
}

.btn-YT:hover {
  background: rgb(129, 0, 0);
  transform: translateY(-2px);
  box-shadow: 1px 1px 5px #ff000070;
}

.social-icons {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  margin-top: 10rem;
}

.social-icons .icon {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* ========== SECTION 2 - CARDS ========== */
.section-concepts {
  width: 100%;
  background: var(--bg-dark);
  padding: 5rem 4% 6rem;
}

  .heading-container {
    text-align: center;
    padding: 0.5rem;
  }

  .sub-heading {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.6rem;
    margin-bottom: 0.3rem;
  }

  .sub-heading .line {
    width: 28px;
    height: 1px;
    background: #2284df;
  }

  .sub-heading .sub-text {
    font-size: 1rem;
    font-weight: 600;
    letter-spacing: 1.5px;
    color: #ffffff;
    text-transform: uppercase;
  }

  .main-heading {
    margin: 0;
    font-size: clamp(1.9rem, 4vw, 2.6rem);
    font-weight: 800;
    color: #2284df;
  }

  .accent-line {
    width: 48px;
    height: 4px;
    background: #ffffff;
    margin: 14px auto 0;
    border-radius: 2px;
  }


.section-text {
  text-align: center;
  font-size: clamp(1.15rem, 2.2vw, 1.4rem);
  font-weight: 400;
  color: var(--text-muted);
  margin: 1rem 0 1rem 0;
}

.cards-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2rem;
  max-width: 1400px;
  margin: 2rem auto;
}

.card {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  border-style: dotted;
  border-width: 1px;
  border-color: var(--btn-blue);
  border-radius: 6px;
  padding: 0;
}

.card:Hover {
  transform: scale(1.01);
  transition: transform 0.2s ease;
  box-shadow: 0 1px 5px var(--btn-blue-hover);
}

.card-image {
  width: 100%;
  overflow: hidden;
  background: none;
}

.card-image img {
  width: 100%;
  height: auto;
  display: block;
}


.card h3 {
  font-size: 1.45rem;
  font-weight: 800;
  margin: 0 0 0 1.5rem;
}

.card p {
  font-size: 1.25rem;
  color: var(--text-muted);
  line-height: 1.65;
  margin: 0.5rem 1.5rem 0 1.5rem;
  flex-grow: 1;
}

.card .btn {
  padding: 0.60rem 1.3rem;
  margin: 2rem 1rem 1rem 1.5rem;
  font-size: 1rem;
}


.back-to-top {
  position: fixed;
  bottom: 30px;
  right: 30px;
  width: 48px;
  height: 48px;
  background-color: var(--btn-blue);
  color: var(--text-muted);
  border: none;
  border-radius: 50%;
  font-size: 22px;
  font-weight: 800;
  cursor: pointer;
  display: none; /* Hidden by default */
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
  transition: background-color 0.3s, opacity 0.3s, transform 0.3s;
  z-index: 999;
}

.back-to-top:hover {
  background-color: var(--btn-blue-hover);
  transform: translateY(-3px);
}

.back-to-top.show {
  display: flex;
}

/* ========== Footer ========== */

.footer-section {
  width: 100%;
  margin: 40px auto;
  padding: 30px;
  background: var(--btn-blue-hover);
  line-height: 1.6;
}

.footer-section p {
  max-width: 1400px;
  font-size: 1.5rem;
  margin: 3rem auto;
  text-align: center;
}

.wallets {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2rem;
  max-width: 1200px;
  margin: 1rem auto;
}

.wallet-item {
  margin-bottom: 1.5rem;
}

.wallet-item strong {
  font-size: 1.2rem;
  color: var(--text-muted);
}

.wallet-row {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-top: 6px;
  flex-wrap: wrap;
}

.wallet-row code {
  background: var(--text-muted);
  padding: 0.3rem 0.5rem;
  border-radius: 6px;
  font-size: 1.2rem;
  word-break: break-all;
  flex: 1;
  color: var(--bg-dark);
}

.copy-btn {
  padding: 0.7rem 1.1rem;
  background: var(--btn-blue);
  color: var(--text-muted);
  border: none;
  border-radius: 6px;
  cursor: pointer;
  font-size: 1rem;
  transition: background 0.2s;
}

.copy-btn:hover {
  background: var(--btn-blue-hover);
}

.copy-btn.copied {
  background: #198754;
}



/* ========== Single Page ========== */
.content-hero {
  position: relative;
  width: 100%;
  min-height: 30vh;
  background: var(--bg-dark);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0 0;
}

.single-content-title {
  max-width: 1400px;
  padding: 5rem 0 0 0;
}

.single-content-title h1 {
  font-size: clamp(2.4rem, 5vw, 3.6rem);
  line-height: 1.15;
  margin-bottom: 2.25rem;
  letter-spacing: -0.5px;
  text-align: center;
}

.single-content-title img {
  max-width: 100%;
  height: auto;
  display: block;
  margin: 0 auto;
}

.section-single-content {
  max-width: 1200px;
  background: var(--bg-dark);
  position: relative;
  display: block;
  margin: 0 auto;
  padding: 1rem 6rem;
}

.section-single-content p {
  font-size: clamp(1.15rem, 2.2vw, 1.4rem);
  font-weight: 600;
  color: var(--text-muted);
  margin: 1rem 0 1rem 0;
}

.section-single-content h2 {
  font-size: clamp(2rem, 4vw, 2.6rem);
  font-weight: 800;
  color: var(--text-muted);
  margin: 5rem 0 1rem 0;
}

.section-single-content h3 {
  font-size: clamp(1.5rem, 3vw, 2.2rem);
  font-weight: 800;
  color: var(--text-muted);
  margin: 5rem 0 1rem 0;
}

.section-single-content h4 {
  font-size: clamp(1.3rem, 2.5vw, 1.9rem);
  font-weight: 800;
  color: var(--text-muted);
  margin: 5rem 0 1rem 0;
}

.section-single-content ul {
  list-style: disc;
  margin: 3rem 0 3rem 0.5rem;
}

.section-single-content li {
  font-size: clamp(1.15rem, 2.2vw, 1.4rem);
  font-weight: 600;
  color: var(--text-muted);
  margin: 0.5rem 0 0.5rem 1.5rem;
}

.section-single-content img {
  width:100%;
  height: auto;
  display: block;
  margin: 2rem auto;
}


/* Lightbox Section */

.chart-examples {
  max-width: 500px;
  max-height: 300px;
  background: var(--btn-blue-hover);
  display: flex;
  flex-direction: column;
  align-items: center;
  margin: 0.5rem auto;
  padding: 0.5rem 0.5rem;
  border-radius: 6px;
  text-align: center;
}

.chart-text {
  font-size: 1.5rem !important;
  font-weight: 800 !important;
  color: var(--text-muted);
  line-height: 1;
  margin: 1rem 0 0 0 !important;
}

.chart-text span {
  color: var(--text-white);
  font-size: 1rem;
  font-weight: 600 !important;
}

.thumbnails {
  max-width: 600px !important; 
  max-height: 200px !important;
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem !important;
  margin: 1rem;
}

.thumbnail {
  width: 150px !important;
  height: 100px !important;
  border-radius: 6px;
  cursor: pointer;
  transition: transform 0.25s;
  box-shadow: 0 0 3px var(--text-muted);
  margin: 0 !important;
  padding: 0 !important;
}

.thumbnail:hover {
  transform: scale(1.05);
}

/* Lightbox */
.lightbox {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: var(--bg-dark);
  justify-content: center;
  align-items: center;
  z-index: 9999;
}

.lightbox.active {
  display: flex;
}

.lightbox img {
  max-width: 90% !important;
  max-height: 85% !important;
  border-radius: 6px;
  box-shadow: 0 0 30px var(--btn-blue-hover);

}

.close-btn {
  position: absolute;
  top: 25px;
  right: 35px;
  font-size: 40px;
  color: white;
  cursor: pointer;
  transition: color 0.2s;
}

.close-btn:hover {
  color: #ff6b6b;
}



.content-footer {
  max-width: 600px;
  background: var(--btn-blue-hover);
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 7rem;
  margin: 0 auto;
  margin-top: 10rem;
  margin-bottom: 5rem;
  border-radius: 6px;
}


.prev-next-btn {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.6rem 1.5rem;
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--text-muted);
  text-align: center;
  transition: background 0.25s ease, transform 0.2s ease;
}

.prev-next-btn:hover {
  color: var(--btn-blue);
}



/* ========== RESPONSIVE ========== */
@media (max-width: 1100px) {
  .cards-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem 1.75rem;
  }
}

@media (max-width: 900px) {
  .navbar {
    padding: 1rem 5%;
  }

  .nav-links {
    position: fixed;
    top: 0;
    right: -100%;
    width: 280px;
    height: 100vh;
    background: rgba(8, 18, 35, 0.98);
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 2rem;
    transition: right 0.35s ease;
    box-shadow: -8px 0 30px rgba(0,0,0,0.4);
  }

  .nav-links.active {
    right: 0;
  }

  .nav-links a {
    font-size: 1.25rem;
  }

  .menu-toggle {
    display: block;
  }

  .menu-toggle.active span:nth-child(1) {
    transform: translateY(8.5px) rotate(45deg);
  }
  .menu-toggle.active span:nth-child(2) {
    opacity: 0;
  }
  .menu-toggle.active span:nth-child(3) {
    transform: translateY(-8.5px) rotate(-45deg);
  }

  .hero {
    min-height: 100vh;
    padding-top: 6rem;
    align-items: flex-start;
    background: url('assets/hero-bg-mobile.jpg') center center / cover no-repeat;
  }

  .hero-content {
    max-width: 100%;
    padding: 2rem 0 0 0;
    margin: 0 auto;
  }

  .section-single-content {
  overflow-x: hidden;
  padding: 2rem 3.5rem;
}


  .wallets {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
  margin: 1rem auto;
}
}

@media (max-width: 600px) {
  .navbar {
    padding: 0.9rem 4%;
  }

  .logo img {
    height: 40px;
  }

  .hero {
    min-height: 100vh;
    background: url('assets/hero-bg-mobile.png') center center / cover no-repeat;
  }

  .hero-content {
    padding: 5rem 0 0 0;
    margin: 0 auto;
  }

  .hero-content h1 {
    font-size: 2.1rem;
  }

  .hero-content p {
    font-size: 1.1rem;
    margin-bottom: 1.75rem;
  }

  .btn {
    padding: 0.75rem 1.6rem;
    font-size: 0.95rem;
  }

  .section-concepts {
    padding: 3.5rem 5% 4rem;
  }

  .section-title {
    margin-bottom: 2.5rem;
  }

  .cards-grid {
    grid-template-columns: 1fr;
    gap: 2.25rem;
    max-width: 380px;
  }

  .card {
    align-items: center;
    text-align: center;
  }

  .card h3 {
  margin: 0;
}

  .card p
  {
    margin: 0.5rem 0 0.5rem 0;
  }

  .card .btn {
    margin: 1rem auto;
  }

  .section-case-studies {
    padding: 3.5rem 5% 4rem;
  }

  .case-image {
    max-width: 100%;
  }

  .section-single-content {
  overflow-x: hidden;
  padding: 1rem 1.5rem;
}


  .wallets {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
  margin: 1rem auto;
}
}


@media (max-width: 400px) {
  .hero {
    position: relative;
    width: 100%;
    min-height: 100vh;
    background: url('assets/hero-bg-mobile.png') center center / cover no-repeat;

}

  .hero-content {
    padding: 5rem 0 0 0;
    margin: 0 auto;
    text-align: center;
  }

  .hero-buttons .btn {
    width: 100%;
    text-align: center;
  }

  .social-icons {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1.5rem;
  margin-top: 10rem;
}

.card h3 {
  margin: 0;
}

.section-single-content {
  overflow-x: hidden;
  padding: 1rem 1.5rem;
}

.content-footer {
  max-width: 300px;
  gap: 1rem ;
}


.chart-examples {
  max-width: 100%;
  max-height: 100vh;
  flex-direction: column;
  margin: 0.5rem auto;
  padding: 0.5rem 1rem;
}

.thumbnails {
  max-width: 600px !important;
  max-height: 100% !important;
  display: block;
  margin: 0 auto;
  padding: 0.5rem !important;
}

.thumbnail {
  width: 150px !important;
  height: 100px !important;
  border-radius: 6px;
  cursor: pointer;
  transition: transform 0.25s;
  box-shadow: 0 0 3px var(--text-muted);
  margin: 1rem !important;
  padding: 0 !important;
}

.wallets {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
  margin: 1rem auto;
}
}