/* Global Reset & Base Styles */
:root {
  --color-primary: #0ea5e9;
  --color-primary-dark: #0284c7;
  --color-primary-light: #38bdf8;
  --color-slate-50: #f8fafc;
  --color-slate-100: #f1f5f9;
  --color-slate-200: #e2e8f0;
  --color-slate-300: #cbd5e1;
  --color-slate-400: #94a3b8;
  --color-slate-500: #64748b;
  --color-slate-600: #475569;
  --color-slate-900: #0f172a;
  --color-white: #ffffff;
  
  --font-base: "Plus Jakarta Sans", sans-serif;
  --container-width: 1280px;
  --nav-height: 80px;
  --border-radius-lg: 1rem;
  --border-radius-xl: 1.5rem;
  --border-radius-2xl: 2rem;
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
  --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
  --shadow-2xl: 0 25px 50px -12px rgb(0 0 0 / 0.25);
  
  --transition-fast: 0.2s ease;
  --transition-normal: 0.3s ease;
  --transition-slow: 0.5s ease;
}

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

body {
  font-family: var(--font-base);
  background-color: var(--color-slate-50);
  color: var(--color-slate-900);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, h5, h6 {
  line-height: 1.2;
  font-weight: 800; /* extrabold equivalent */
  margin-bottom: 1rem;
}

p {
  margin-bottom: 1.5rem;
  color: var(--color-slate-500);
}

a {
  text-decoration: none;
  color: inherit;
  transition: color var(--transition-fast);
}

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

/* Utility Layout Classes */
.container {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 1.5rem;
}

.flex { display: flex; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.justify-center { justify-content: center; }
.flex-col { flex-direction: column; }
.gap-2 { gap: 0.5rem; }
.gap-4 { gap: 1rem; }
.gap-8 { gap: 2rem; }
.gap-16 { gap: 4rem; }

.hidden { display: none !important; }
.desktop-nav { display: none; }

.grid { display: grid; }
.grid-cols-1 { grid-template-columns: repeat(1, 1fr); }

@media (min-width: 768px) {
  .grid-cols-2 { grid-template-columns: repeat(2, 1fr); }
  .grid-cols-3 { grid-template-columns: repeat(3, 1fr); }
  .grid-cols-4 { grid-template-columns: repeat(4, 1fr); }
  .md\:flex-row { flex-direction: row; }
}

@media (min-width: 1024px) {
  .lg\:grid-cols-2 { grid-template-columns: repeat(2, 1fr); }
  .lg\:grid-cols-4 { grid-template-columns: repeat(4, 1fr); }
  .lg\:flex { display: flex !important; }
  .lg\:hidden { display: none !important; }
  .desktop-nav { display: flex !important; align-items: center; }
}

/* Buttons & Interactive Elements */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 1rem 2rem;
  font-size: 0.875rem; /* text-sm */
  font-weight: 700;
  border-radius: var(--border-radius-lg);
  transition: all var(--transition-normal);
  cursor: pointer;
  border: none;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.btn-primary {
  background: linear-gradient(to right, var(--color-primary-light), var(--color-primary-dark));
  color: white;
  box-shadow: 0 4px 14px 0 rgba(14, 165, 233, 0.39);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(14, 165, 233, 0.23);
}

.btn-secondary {
  background-color: var(--color-slate-900);
  color: white;
  box-shadow: var(--shadow-md);
}

.btn-secondary:hover {
  background-color: #1e293b;
  transform: translateY(-2px);
  box-shadow: var(--shadow-xl);
}

.btn-outline {
  border: 1px solid var(--color-slate-200);
  background: white;
  color: var(--color-slate-500);
}

.btn-outline:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

/* Navbar */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 1.25rem 0;
  transition: all var(--transition-slow);
  background-color: transparent;
}

.navbar-light .nav-link,
.navbar-light .nav-logo,
.navbar-light .mobile-menu-btn {
  color: white !important;
}

.navbar-light.scrolled .nav-link,
.navbar-light.scrolled .nav-logo,
.navbar-light.scrolled .mobile-menu-btn {
  color: var(--color-slate-900) !important;
}

.navbar-light .nav-logo div {
  background: rgba(255, 255, 255, 0.1) !important;
}

.navbar-light.scrolled .nav-logo div {
  background: rgba(14, 165, 233, 0.1) !important;
}

.navbar.scrolled {
  background-color: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(12px);
  padding: 0.75rem 0;
  border-bottom: 1px solid rgba(226, 232, 240, 0.5);
  box-shadow: var(--shadow-md);
}

.nav-link {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-slate-600);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  white-space: nowrap;
  display: flex;
  align-items: center;
  gap: 0.4rem;
  transition: all var(--transition-fast);
}

.nav-link i {
  transition: transform 0.2s ease;
}

.nav-item-dropdown:hover .nav-link i[data-lucide="chevron-down"] {
  transform: translateY(2px);
}

.nav-link:hover {
  color: var(--color-primary);
}

.nav-rag-btn {
  background: rgba(14, 165, 233, 0.1);
  color: var(--color-primary);
  padding: 0.6rem 1.25rem;
  border-radius: 999px;
  font-size: 0.8125rem;
  font-weight: 800;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  transition: all var(--transition-fast);
  border: 1px solid rgba(14, 165, 233, 0.2);
}

.nav-rag-btn:hover {
  background: var(--color-primary);
  color: white;
  transform: translateY(-1px);
}

/* Dropdown Styles */
.nav-item-dropdown {
  position: relative;
  display: flex;
  align-items: center;
}

.dropdown-menu {
  position: absolute;
  top: 100%;
  right: 0;
  background: white;
  min-width: 240px;
  border-radius: 1.25rem;
  padding: 1rem;
  box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
  border: 1px solid var(--color-slate-100);
  opacity: 0;
  visibility: hidden;
  transform: translateY(12px);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  z-index: 1000;
  margin-top: 0.5rem;
}

.nav-item-dropdown:hover .dropdown-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.dropdown-menu-right {
  left: auto;
  right: 0;
}

.dropdown-link {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.75rem 1rem;
  color: var(--color-slate-600);
  font-weight: 600;
  font-size: 0.875rem;
  border-radius: 0.5rem;
  transition: all 0.2s ease;
}

.dropdown-link:hover {
  background: var(--color-slate-50);
  color: var(--color-primary);
  padding-left: 1.25rem;
}

/* Language Switcher */
.lang-switcher {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-left: 1rem;
  padding-left: 1rem;
  border-left: 1px solid var(--color-slate-200);
}

.lang-btn {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  overflow: hidden;
  cursor: pointer;
  border: 2px solid transparent;
  transition: all 0.2s ease;
  padding: 0;
  background: none;
  opacity: 0.6;
}

.lang-btn.active {
  border-color: var(--color-primary);
  opacity: 1;
  transform: scale(1.1);
}

.lang-btn img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* Mobile Menu */
.mobile-menu-btn {
  background: none;
  border: none;
  cursor: pointer;
  color: var(--color-slate-600);
}

.mobile-menu {
  display: none;
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  background-color: white;
  border-bottom: 1px solid var(--color-slate-200);
  box-shadow: var(--shadow-xl);
  padding: 1rem;
}

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

.mobile-nav-link {
  display: block;
  padding: 0.75rem 1rem;
  font-weight: 600;
  color: var(--color-slate-600);
  border-radius: 0.5rem;
}

.mobile-nav-link:hover {
  background-color: var(--color-slate-50);
  color: var(--color-primary);
}

/* Hero Section */
.hero {
  position: relative;
  min-height: 90vh;
  display: flex;
  align-items: center;
  padding-top: var(--nav-height);
  padding-bottom: 4rem;
  overflow: hidden;
}

.hero-bg-dots {
  position: absolute;
  inset: 0;
  background-image: radial-gradient(circle, #cbd5e1 1px, transparent 1px);
  background-size: 24px 24px;
  opacity: 0.4;
  pointer-events: none;
}

.hero-glow {
  position: absolute;
  width: 400px;
  height: 400px;
  background: rgba(14, 165, 233, 0.1);
  filter: blur(80px);
  border-radius: 50%;
  top: 10%;
  left: 10%;
  animation: pulse 4s infinite;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1rem;
  background-color: var(--color-slate-100);
  border: 1px solid var(--color-slate-200);
  border-radius: 9999px;
  font-size: 0.75rem;
  font-weight: 800;
  text-transform: uppercase;
  color: var(--color-slate-500);
  letter-spacing: 0.1em;
  margin-bottom: 2rem;
}

.hero-title {
  font-size: clamp(2.5rem, 5vw, 4.5rem);
  color: var(--color-slate-900);
  margin-bottom: 1.5rem;
  letter-spacing: -0.02em;
}

.text-primary { color: var(--color-primary); }

.hero-subtitle {
  font-size: 1.25rem;
  color: var(--color-slate-500);
  max-width: 600px;
  margin-bottom: 2.5rem;
}

.hero-visual {
  position: relative;
  border-radius: var(--border-radius-2xl);
  box-shadow: var(--shadow-2xl);
  background: white;
  border: 1px solid rgba(226, 232, 240, 0.5);
  padding: 0.5rem;
  aspect-ratio: 4/3;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* Clients Section */
.clients-section {
  padding: 4rem 0;
  background: transparent;
  margin-top: -5rem;
  position: relative;
  z-index: 10;
}

.clients-card {
  background: rgba(255, 255, 255, 0.8);
  backdrop-filter: blur(12px);
  border: 1px solid rgba(226, 232, 240, 0.6);
  border-radius: var(--border-radius-xl);
  padding: 3rem;
  text-align: center;
  box-shadow: var(--shadow-xl);
}

.client-logo {
  filter: grayscale(100%);
  opacity: 0.6;
  transition: all var(--transition-normal);
  height: 4rem;
  object-fit: contain;
}

.client-logo:hover {
  filter: grayscale(0%);
  opacity: 1;
  transform: scale(1.1);
}

/* Services Section */
.section { padding: 6rem 0; }
.section-title-wrapper { margin-bottom: 4rem; }
.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--color-primary);
  font-weight: bold;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  font-size: 0.875rem;
  margin-bottom: 1rem;
}
.tag-line { width: 2rem; height: 2px; background-color: var(--color-primary); }

.service-card {
  background: white;
  border: 1px solid var(--color-slate-200);
  border-radius: var(--border-radius-xl);
  padding: 2rem;
  transition: all var(--transition-normal);
  position: relative;
  overflow: hidden;
  height: 100%;
  display: flex;
  flex-direction: column;
}

.service-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-xl);
  border-color: rgba(14, 165, 233, 0.3);
}

.service-icon-wrapper {
  width: 3.5rem;
  height: 3.5rem;
  background-color: var(--color-slate-50);
  border-radius: 1rem;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.5rem;
  color: var(--color-slate-400);
  transition: all var(--transition-normal);
}

.service-card:hover .service-icon-wrapper {
  background-color: var(--color-primary);
  color: white;
  transform: scale(1.1);
}

.service-title { font-size: 1.25rem; font-weight: 800; color: var(--color-slate-900); margin-bottom: 0.75rem; }
.service-desc { font-size: 0.875rem; color: var(--color-slate-500); margin-bottom: 1.5rem; flex-grow: 1; }
.service-link {
  display: inline-flex;
  align-items: center;
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--color-slate-400);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  transition: color var(--transition-fast);
}

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

/* RAG Highlight */
.rag-card {
  background-color: var(--color-slate-900);
  color: white;
  border-radius: var(--border-radius-2xl);
  padding: 4rem;
  position: relative;
  overflow: hidden;
}

.rag-card h2 { font-size: 2.5rem; color: white; margin-bottom: 1.5rem; }
.rag-card p { color: var(--color-slate-400); font-size: 1.125rem; margin-bottom: 2rem; }
.rag-bg-glow {
  position: absolute;
  top: 0;
  right: 0;
  width: 500px;
  height: 500px;
  background: rgba(14, 165, 233, 0.15);
  filter: blur(100px);
  border-radius: 50%;
  pointer-events: none;
}

/* Footer */
.footer {
  background-color: var(--color-slate-50);
  border-top: 1px solid var(--color-slate-200);
  padding: 5rem 0 2rem;
  margin-top: auto;
}

.footer-brand { display: flex; align-items: center; gap: 0.75rem; margin-bottom: 1.5rem; }
.footer-logo {
  width: 2.5rem;
  height: 2.5rem;
  background: rgba(14, 165, 233, 0.1);
  border: 1px solid rgba(14, 165, 233, 0.2);
  border-radius: 0.75rem;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-primary);
}

.footer-heading {
  font-size: 0.75rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 1.5rem;
  color: var(--color-slate-900);
}

.footer-links { list-style: none; }
.footer-links li { margin-bottom: 0.75rem; }
.footer-links a { font-size: 0.875rem; font-weight: 600; color: var(--color-slate-500); }
.footer-links a:hover { color: var(--color-primary); }

.footer-bottom {
  margin-top: 4rem;
  padding-top: 2rem;
  border-top: 1px solid var(--color-slate-200);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.875rem;
  color: var(--color-slate-400);
  flex-wrap: wrap;
  gap: 1rem;
}

/* Animations */
.animate-on-scroll {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s ease-out, transform 0.8s ease-out;
}

.animate-on-scroll.visible {
  opacity: 1;
  transform: translateY(0);
}

@keyframes spin-slow {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}
.animate-spin-slow { animation: spin-slow 20s linear infinite; }
@keyframes pulse {
  0%, 100% { transform: scale(1); opacity: 0.5; }
  50% { transform: scale(1.1); opacity: 0.7; }
}

/* Responsiveness */
@media (max-width: 768px) {
  .hero-title { font-size: 2.5rem; }
  .rag-card { padding: 2rem; }
  .navbar .container { padding: 0 1rem; }
  .hero { flex-direction: column; text-align: center; padding-top: 6rem; }
  .hero-subtitle { margin: 0 auto 2rem; }
  .grid-cols-2, .grid-cols-4 { grid-template-columns: 1fr; }
  .flex-col-mobile { flex-direction: column; }
  .footer-bottom { flex-direction: column; text-align: center; }
  .btn { width: 100%; margin-bottom: 0.5rem; }
  .sm\:w-auto { width: auto; }
}

/* Feature List Styles */
.feature-list { list-style: none; margin-top: 2rem; }
.feature-item { display: flex; gap: 1rem; margin-bottom: 1.5rem; align-items: flex-start; }
.feature-icon { color: var(--color-primary); width: 1.5rem; height: 1.5rem; flex-shrink: 0; margin-top: 0.2rem; }