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

:root {
  --primary: #2563eb;
  --primary-dark: #1d4ed8;
  --primary-light: #dbeafe;
  --dark: #0f172a;
  --dark-2: #1e293b;
  --gray: #64748b;
  --gray-light: #f1f5f9;
  --white: #ffffff;
  --radius: 10px;
  --shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 10px 40px rgba(0, 0, 0, 0.12);
  --transition: 0.3s ease;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 80px;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen,
    Ubuntu, Cantarell, sans-serif;
  color: var(--dark);
  line-height: 1.6;
  background: var(--white);
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

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

/* ===== Buttons ===== */
.btn {
  display: inline-block;
  padding: 14px 32px;
  border-radius: var(--radius);
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  border: 2px solid transparent;
}

.btn-primary {
  background: var(--primary);
  color: var(--white);
  border-color: var(--primary);
}

.btn-primary:hover {
  background: var(--primary-dark);
  border-color: var(--primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(37, 99, 235, 0.3);
}

.btn-outline {
  background: transparent;
  color: var(--white);
  border-color: var(--white);
}

.btn-outline:hover {
  background: var(--white);
  color: var(--primary);
  transform: translateY(-2px);
}

.btn-full {
  width: 100%;
}

/* ===== Header ===== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  padding: 18px 0;
  transition: var(--transition);
}

.header.scrolled {
  background: rgba(255, 255, 255, 0.97);
  backdrop-filter: blur(10px);
  padding: 12px 0;
  box-shadow: 0 2px 20px rgba(0, 0, 0, 0.08);
}

.header .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  display: flex;
  align-items: center;
  transition: var(--transition);
}

.logo-img {
  height: 40px;
  width: auto;
  transition: var(--transition);
}

/* At top: show white logo, hide dark */
.logo-white {
  display: block;
}

.logo-dark {
  display: none;
}

/* On scroll: show dark logo, hide white */
.header.scrolled .logo-white {
  display: none;
}

.header.scrolled .logo-dark {
  display: block;
}


.nav {
  display: flex;
  gap: 32px;
}

.nav a {
  font-weight: 500;
  color: rgba(255, 255, 255, 0.85);
  transition: var(--transition);
  position: relative;
}

.nav a::after {
  content: "";
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--primary);
  transition: var(--transition);
}

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

.header.scrolled .nav a {
  color: var(--dark);
}

.header.scrolled .nav a:hover {
  color: var(--primary);
}

.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.menu-toggle span {
  width: 26px;
  height: 2px;
  background: var(--white);
  transition: var(--transition);
}

.header.scrolled .menu-toggle span {
  background: var(--dark);
}

/* ===== Hero ===== */
.hero {
  background: linear-gradient(135deg, #0a1628 0%, #0f1d36 50%, #0d2252 100%);
  padding: 160px 0 120px;
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
}

#networkCanvas {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
}


.hero-content {
  max-width: 700px;
  position: relative;
  z-index: 1;
}

.hero h1 {
  font-size: 3.5rem;
  font-weight: 800;
  color: var(--white);
  line-height: 1.15;
  margin-bottom: 24px;
}

.hero p {
  font-size: 1.2rem;
  color: rgba(255, 255, 255, 0.75);
  margin-bottom: 40px;
  max-width: 560px;
}

.hero-buttons {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

/* ===== Clients / Trusted By ===== */
.clients {
  padding: 60px 0;
  background: var(--white);
  border-bottom: 1px solid #e2e8f0;
}

.clients-label {
  text-align: center;
  text-transform: uppercase;
  letter-spacing: 2px;
  font-size: 0.85rem;
  color: var(--gray);
  margin-bottom: 32px;
  font-weight: 600;
}

.top-client {
  text-align: center;
  margin-bottom: 40px;
  padding: 32px;
  background: linear-gradient(135deg, var(--dark) 0%, var(--primary-dark) 100%);
  border-radius: var(--radius);
  position: relative;
}

.top-client-badge {
  display: inline-block;
  background: #facc15;
  color: var(--dark);
  font-size: 0.7rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  padding: 4px 14px;
  border-radius: 20px;
  margin-bottom: 12px;
}

.top-client-logo {
  display: block;
  width: 80px;
  height: 80px;
  object-fit: contain;
  margin: 0 auto 12px;
  background: var(--white);
  border-radius: 50%;
  padding: 12px;
}

.top-client-name {
  display: block;
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--white);
  letter-spacing: 2px;
  text-transform: uppercase;
}

.top-client-desc {
  color: rgba(255, 255, 255, 0.7);
  font-size: 0.95rem;
  margin-top: 8px;
  max-width: 500px;
  margin-left: auto;
  margin-right: auto;
}

.clients-carousel {
  display: flex;
  align-items: center;
  gap: 16px;
  position: relative;
}

.carousel-arrow {
  flex-shrink: 0;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  border: 2px solid #e2e8f0;
  background: var(--white);
  color: var(--dark);
  font-size: 1.6rem;
  line-height: 1;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
  z-index: 2;
}

.carousel-arrow:hover {
  background: var(--primary);
  border-color: var(--primary);
  color: var(--white);
  transform: scale(1.08);
}

.clients-grid {
  display: flex;
  align-items: center;
  gap: 48px;
  overflow-x: hidden;
  scroll-behavior: smooth;
  flex: 1;
  padding: 10px 0;
}

.client-logo {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  opacity: 0.6;
  transition: var(--transition);
  flex-shrink: 0;
}

.client-logo:hover {
  opacity: 1;
}

.client-logo img {
  width: 56px;
  height: 56px;
  object-fit: contain;
}

.client-logo span {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--gray);
  letter-spacing: 0.5px;
  text-transform: uppercase;
}

.client-logo:hover span {
  color: var(--primary);
}


/* ===== Section Shared ===== */
.section-header {
  text-align: center;
  margin-bottom: 60px;
}

.section-header h2 {
  font-size: 2.25rem;
  font-weight: 800;
  margin-bottom: 12px;
}

.section-header p {
  font-size: 1.1rem;
  color: var(--gray);
  max-width: 500px;
  margin: 0 auto;
}

/* ===== Services ===== */
.services {
  padding: 100px 0;
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.service-card {
  background: var(--white);
  border: 1px solid #e2e8f0;
  border-radius: var(--radius);
  padding: 36px 28px;
  transition: var(--transition);
}

.service-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: var(--primary-light);
}

.service-icon {
  font-size: 2.5rem;
  margin-bottom: 16px;
}

.service-card h3 {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 10px;
}

.service-card p {
  color: var(--gray);
  font-size: 0.95rem;
}

/* ===== About ===== */
.about {
  padding: 100px 0;
  background: var(--gray-light);
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.about-content h2 {
  font-size: 2.25rem;
  font-weight: 800;
  margin-bottom: 20px;
}

.about-content p {
  color: var(--gray);
  margin-bottom: 16px;
  font-size: 1.05rem;
}

.stats {
  display: flex;
  gap: 40px;
  margin-top: 32px;
}

.stat {
  text-align: center;
}

.stat-number {
  display: block;
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--primary);
}

.stat-label {
  display: block;
  font-size: 0.85rem;
  color: var(--gray);
  margin-top: 4px;
}

.about-image {
  display: flex;
  justify-content: center;
}

.image-placeholder {
  width: 100%;
  max-width: 420px;
  aspect-ratio: 1;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  border-radius: 20px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  color: var(--white);
}

.image-placeholder span {
  font-size: 5rem;
}

.image-placeholder p {
  color: rgba(255, 255, 255, 0.8);
  font-size: 1.1rem;
  margin-top: 12px;
}

/* ===== Experience ===== */
.experience {
  padding: 100px 0;
}

.experience-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.experience-card {
  background: var(--white);
  border: 1px solid #e2e8f0;
  border-radius: var(--radius);
  padding: 36px 28px;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.experience-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 4px;
  height: 100%;
  background: var(--primary);
  transform: scaleY(0);
  transition: var(--transition);
}

.experience-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
}

.experience-card:hover::before {
  transform: scaleY(1);
}

.exp-icon {
  font-size: 2.2rem;
  margin-bottom: 14px;
}

.experience-card h3 {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 10px;
  color: var(--dark);
}

.experience-card p {
  color: var(--gray);
  font-size: 0.95rem;
  margin-bottom: 18px;
}

.exp-tags {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.exp-tags li {
  background: var(--primary-light);
  color: var(--primary-dark);
  font-size: 0.78rem;
  font-weight: 600;
  padding: 4px 12px;
  border-radius: 20px;
}

.exp-clients {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin-top: 16px;
  padding-top: 16px;
  border-top: 1px solid #e2e8f0;
}

.exp-clients-label {
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--dark);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.exp-client {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--gray);
  background: var(--gray-light);
  padding: 3px 10px;
  border-radius: 4px;
  transition: var(--transition);
}

.exp-client:hover {
  color: var(--primary);
  background: var(--primary-light);
}

/* ===== Features ===== */
.features {
  padding: 100px 0;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 28px;
}

.feature {
  text-align: center;
  padding: 32px 20px;
}

.feature-icon {
  font-size: 2.5rem;
  margin-bottom: 16px;
}

.feature h3 {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 10px;
}

.feature p {
  color: var(--gray);
  font-size: 0.95rem;
}

/* ===== Blog Preview ===== */
.blog-preview {
  padding: 100px 0;
}

.blog-preview-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.bp-card {
  display: flex;
  flex-direction: column;
  border: 1px solid #e2e8f0;
  border-radius: var(--radius);
  padding: 0;
  overflow: hidden;
  transition: var(--transition);
  text-decoration: none;
  color: inherit;
}

.bp-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
}

.bp-icon {
  height: 140px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 3.5rem;
}

.bp-tag {
  display: inline-block;
  width: fit-content;
  background: var(--primary-light);
  color: var(--primary-dark);
  font-size: 0.7rem;
  font-weight: 700;
  padding: 3px 10px;
  border-radius: 20px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin: 20px 24px 0;
}

.bp-card h3 {
  font-size: 1.1rem;
  font-weight: 700;
  margin: 10px 24px 8px;
  line-height: 1.4;
}

.bp-card p {
  color: var(--gray);
  font-size: 0.9rem;
  margin: 0 24px;
  flex-grow: 1;
}

.bp-link {
  color: var(--primary);
  font-weight: 600;
  font-size: 0.9rem;
  margin: 16px 24px 24px;
  transition: var(--transition);
}

.bp-card:hover .bp-link {
  color: var(--primary-dark);
}

/* ===== Contact ===== */
.contact {
  padding: 100px 0;
  background: var(--gray-light);
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
}

.contact-form {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.contact-form input,
.contact-form select,
.contact-form textarea {
  width: 100%;
  padding: 14px 18px;
  border: 1px solid #e2e8f0;
  border-radius: var(--radius);
  font-size: 1rem;
  font-family: inherit;
  background: var(--white);
  transition: var(--transition);
  color: var(--dark);
}

.contact-form input:focus,
.contact-form select:focus,
.contact-form textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.contact-form textarea {
  resize: vertical;
}

.contact-info {
  display: flex;
  flex-direction: column;
  gap: 28px;
  justify-content: center;
}

.info-item {
  display: flex;
  gap: 16px;
  align-items: flex-start;
}

.info-icon {
  font-size: 1.5rem;
  flex-shrink: 0;
  margin-top: 2px;
}

.info-item h4 {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 4px;
}

.info-item p {
  color: var(--gray);
  font-size: 0.95rem;
}

/* ===== Footer ===== */
.footer {
  background: var(--dark);
  color: rgba(255, 255, 255, 0.7);
  padding: 60px 0 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 48px;
  padding-bottom: 40px;
}

.footer-brand .logo {
  display: inline-block;
  margin-bottom: 14px;
}

.footer-brand p {
  font-size: 0.95rem;
  max-width: 320px;
}

.footer-links h4 {
  color: var(--white);
  font-size: 1rem;
  margin-bottom: 16px;
}

.footer-links a {
  display: block;
  font-size: 0.95rem;
  margin-bottom: 10px;
  transition: var(--transition);
}

.footer-links a:hover {
  color: var(--primary);
  padding-left: 4px;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding: 20px 0;
  text-align: center;
  font-size: 0.9rem;
}

/* ===== Toast ===== */
.toast {
  position: fixed;
  bottom: 30px;
  right: 30px;
  background: var(--primary);
  color: var(--white);
  padding: 16px 28px;
  border-radius: var(--radius);
  font-weight: 600;
  box-shadow: var(--shadow-lg);
  transform: translateY(100px);
  opacity: 0;
  transition: var(--transition);
  z-index: 9999;
}

.toast.show {
  transform: translateY(0);
  opacity: 1;
}

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .services-grid {
    grid-template-columns: repeat(2, 1fr);
  }

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

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

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

  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 768px) {
  .menu-toggle {
    display: flex;
  }

  .nav {
    position: fixed;
    top: 0;
    right: -100%;
    width: 280px;
    height: 100vh;
    background: var(--dark);
    flex-direction: column;
    padding: 80px 32px 32px;
    gap: 24px;
    transition: var(--transition);
    box-shadow: var(--shadow-lg);
  }

  .nav.open {
    right: 0;
  }

  .nav a {
    color: rgba(255, 255, 255, 0.85);
    font-size: 1.1rem;
  }

  .hero h1 {
    font-size: 2.4rem;
  }

  .hero p {
    font-size: 1.05rem;
  }

  .about-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .about-image {
    order: -1;
  }

  .image-placeholder {
    max-width: 300px;
    aspect-ratio: 1.2;
  }

  .contact-grid {
    grid-template-columns: 1fr;
  }

  .stats {
    gap: 24px;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }
}

@media (max-width: 480px) {
  .hero {
    padding: 130px 0 80px;
  }

  .hero h1 {
    font-size: 2rem;
  }

  .services-grid {
    grid-template-columns: 1fr;
  }

  .blog-preview-grid {
    grid-template-columns: 1fr;
  }

  .experience-grid {
    grid-template-columns: 1fr;
  }

  .features-grid {
    grid-template-columns: 1fr;
  }

  .stats {
    flex-direction: column;
    gap: 20px;
  }

  .hero-buttons {
    flex-direction: column;
  }

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

  .section-header h2 {
    font-size: 1.8rem;
  }
}