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

:root {
  --primary: #6C3AED;
  --primary-dark: #5B21B6;
  --primary-light: #8B5CF6;
  --accent: #10B981;
  --dark: #0F172A;
  --dark-2: #1E293B;
  --gray-100: #F1F5F9;
  --gray-200: #E2E8F0;
  --gray-300: #CBD5E1;
  --gray-400: #94A3B8;
  --gray-500: #64748B;
  --gray-600: #475569;
  --white: #FFFFFF;
  --radius: 12px;
  --radius-sm: 8px;
  --shadow: 0 1px 3px rgba(0,0,0,0.08), 0 4px 12px rgba(0,0,0,0.04);
  --shadow-lg: 0 4px 6px rgba(0,0,0,0.05), 0 12px 40px rgba(0,0,0,0.08);
  --transition: 0.2s ease;
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  color: var(--dark);
  background: var(--white);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

.container {
  max-width: 1140px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ===== Navigation ===== */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(255,255,255,0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--gray-200);
  transition: var(--transition);
}

.navbar.scrolled {
  box-shadow: var(--shadow);
}

.nav-container {
  max-width: 1140px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--dark);
  font-weight: 700;
  font-size: 1.1rem;
}

.logo-icon {
  width: 36px;
  height: 36px;
}

.nav-links {
  display: flex;
  list-style: none;
  gap: 32px;
}

.nav-links a {
  text-decoration: none;
  color: var(--gray-600);
  font-size: 0.925rem;
  font-weight: 500;
  transition: color var(--transition);
}

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

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

.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--dark);
  border-radius: 2px;
  transition: var(--transition);
}

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: var(--radius-sm);
  font-size: 0.95rem;
  font-weight: 600;
  text-decoration: none;
  border: none;
  cursor: pointer;
  transition: all var(--transition);
}

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

.btn-primary:hover {
  background: var(--primary-dark);
  transform: translateY(-1px);
  box-shadow: 0 4px 16px rgba(108, 58, 237, 0.3);
}

.btn-outline {
  background: transparent;
  color: var(--white);
  border: 2px solid rgba(255,255,255,0.4);
}

.btn-outline:hover {
  background: rgba(255,255,255,0.1);
  border-color: rgba(255,255,255,0.7);
}

.btn-full {
  width: 100%;
}

/* ===== Hero ===== */
.hero {
  position: relative;
  padding: 160px 24px 100px;
  background: linear-gradient(135deg, #0F172A 0%, #1E1B4B 50%, #312E81 100%);
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(ellipse 600px 400px at 20% 50%, rgba(108,58,237,0.2), transparent),
    radial-gradient(ellipse 500px 300px at 80% 30%, rgba(16,185,129,0.1), transparent);
}

.hero-bg::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.03'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}

.hero-content {
  position: relative;
  max-width: 720px;
  margin: 0 auto;
  text-align: center;
  color: var(--white);
}

.hero-badge {
  display: inline-block;
  padding: 6px 16px;
  background: rgba(108, 58, 237, 0.25);
  border: 1px solid rgba(108, 58, 237, 0.4);
  border-radius: 100px;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--primary-light);
  margin-bottom: 24px;
}

.hero h1 {
  font-size: clamp(2.2rem, 5vw, 3.5rem);
  font-weight: 800;
  line-height: 1.15;
  margin-bottom: 20px;
  letter-spacing: -0.02em;
}

.hero p {
  font-size: 1.15rem;
  color: var(--gray-300);
  max-width: 560px;
  margin: 0 auto 32px;
  line-height: 1.7;
}

.hero-actions {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 56px;
}

.hero-stats {
  display: flex;
  justify-content: center;
  gap: 48px;
  padding-top: 40px;
  border-top: 1px solid rgba(255,255,255,0.1);
}

.stat {
  text-align: center;
}

.stat-number {
  display: block;
  font-size: 1.75rem;
  font-weight: 800;
  color: var(--white);
}

.stat-label {
  font-size: 0.85rem;
  color: var(--gray-400);
}

/* ===== Section Header ===== */
.section-header {
  text-align: center;
  max-width: 600px;
  margin: 0 auto 56px;
}

.section-tag {
  display: inline-block;
  padding: 4px 14px;
  background: rgba(108, 58, 237, 0.08);
  color: var(--primary);
  border-radius: 100px;
  font-size: 0.825rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 12px;
}

.section-header h2 {
  font-size: clamp(1.75rem, 3vw, 2.25rem);
  font-weight: 800;
  margin-bottom: 12px;
  letter-spacing: -0.01em;
}

.section-header p {
  color: var(--gray-500);
  font-size: 1.05rem;
}

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

.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.service-card {
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius);
  padding: 32px 28px;
  transition: all var(--transition);
}

.service-card:hover {
  border-color: var(--primary-light);
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
}

.service-icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 10px;
  background: rgba(108, 58, 237, 0.08);
  color: var(--primary);
  margin-bottom: 20px;
}

.service-icon svg {
  width: 24px;
  height: 24px;
}

.service-card h3 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.service-card p {
  color: var(--gray-500);
  font-size: 0.925rem;
  line-height: 1.6;
}

/* ===== Solutions ===== */
.solutions {
  padding: 100px 0;
  background: var(--gray-100);
}

.solutions-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.solution-card {
  background: var(--white);
  border-radius: var(--radius);
  padding: 36px 32px;
  border: 1px solid var(--gray-200);
  transition: all var(--transition);
}

.solution-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-2px);
}

.solution-number {
  font-size: 2rem;
  font-weight: 800;
  color: var(--primary-light);
  opacity: 0.4;
  margin-bottom: 12px;
}

.solution-card h3 {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.solution-card p {
  color: var(--gray-500);
  font-size: 0.925rem;
  margin-bottom: 16px;
  line-height: 1.6;
}

.solution-card ul {
  list-style: none;
}

.solution-card ul li {
  position: relative;
  padding-left: 20px;
  color: var(--gray-600);
  font-size: 0.9rem;
  margin-bottom: 6px;
}

.solution-card ul li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 8px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent);
}

/* ===== How It Works ===== */
.how-it-works {
  padding: 100px 0;
}

.steps {
  max-width: 700px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 0;
}

.step {
  display: flex;
  gap: 28px;
  position: relative;
  padding-bottom: 40px;
}

.step:last-child {
  padding-bottom: 0;
}

.step::before {
  content: '';
  position: absolute;
  left: 23px;
  top: 52px;
  bottom: 0;
  width: 2px;
  background: var(--gray-200);
}

.step:last-child::before {
  display: none;
}

.step-number {
  flex-shrink: 0;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--primary);
  color: var(--white);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 1.1rem;
}

.step-content h3 {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 6px;
  padding-top: 2px;
}

.step-content p {
  color: var(--gray-500);
  font-size: 0.95rem;
  line-height: 1.65;
}

/* ===== AI Demo ===== */
.demo-section {
  padding: 100px 0;
  background: var(--gray-100);
}

.demo-container {
  max-width: 680px;
  margin: 0 auto;
}

.chat-window {
  background: var(--white);
  border-radius: var(--radius);
  border: 1px solid var(--gray-200);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

.chat-header {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 16px 20px;
  background: var(--dark);
  color: var(--white);
  font-weight: 600;
  font-size: 0.925rem;
}

.chat-header-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--accent);
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

.chat-messages {
  padding: 20px;
  min-height: 300px;
  max-height: 420px;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.message {
  display: flex;
  max-width: 85%;
}

.message.assistant {
  align-self: flex-start;
}

.message.user {
  align-self: flex-end;
}

.message-content {
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  font-size: 0.925rem;
  line-height: 1.55;
}

.message.assistant .message-content {
  background: var(--gray-100);
  color: var(--dark);
  border-bottom-left-radius: 4px;
}

.message.user .message-content {
  background: var(--primary);
  color: var(--white);
  border-bottom-right-radius: 4px;
}

.message-content ul {
  margin: 8px 0 0;
  padding-left: 18px;
}

.message-content li {
  margin-bottom: 4px;
  font-size: 0.875rem;
  color: var(--gray-500);
}

.chat-input-area {
  display: flex;
  gap: 8px;
  padding: 16px 20px;
  border-top: 1px solid var(--gray-200);
}

.chat-input-area input {
  flex: 1;
  padding: 10px 16px;
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-sm);
  font-size: 0.925rem;
  outline: none;
  transition: border-color var(--transition);
}

.chat-input-area input:focus {
  border-color: var(--primary);
}

.chat-input-area .btn {
  padding: 10px 16px;
}

/* Loading dots */
.typing-indicator {
  display: flex;
  gap: 4px;
  padding: 4px 0;
}

.typing-indicator span {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--gray-400);
  animation: typing 1.4s ease-in-out infinite;
}

.typing-indicator span:nth-child(2) { animation-delay: 0.2s; }
.typing-indicator span:nth-child(3) { animation-delay: 0.4s; }

@keyframes typing {
  0%, 60%, 100% { transform: translateY(0); opacity: 0.4; }
  30% { transform: translateY(-6px); opacity: 1; }
}

/* ===== Contact ===== */
.contact {
  padding: 100px 0;
}

.contact-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 48px;
  align-items: start;
}

.contact-form {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.form-group.full-width {
  grid-column: 1 / -1;
}

.form-group label {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--dark);
}

.form-group input,
.form-group select,
.form-group textarea {
  padding: 10px 14px;
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-sm);
  font-size: 0.925rem;
  font-family: inherit;
  outline: none;
  transition: border-color var(--transition);
  background: var(--white);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--primary);
}

.contact-form .btn {
  grid-column: 1 / -1;
  margin-top: 4px;
}

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

.info-card {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 20px;
  background: var(--gray-100);
  border-radius: var(--radius-sm);
}

.info-card svg {
  flex-shrink: 0;
  color: var(--primary);
}

.info-card h4 {
  font-size: 0.875rem;
  font-weight: 700;
  margin-bottom: 2px;
}

.info-card p {
  color: var(--gray-500);
  font-size: 0.9rem;
}

.trust-badges {
  padding: 24px;
  background: var(--gray-100);
  border-radius: var(--radius-sm);
  margin-top: 4px;
}

.trust-badges h4 {
  font-size: 0.825rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--gray-500);
  margin-bottom: 12px;
}

.badges {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.badge {
  padding: 4px 12px;
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: 100px;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--gray-600);
}

/* ===== Footer ===== */
.footer {
  background: var(--dark);
  color: var(--gray-400);
  padding: 64px 0 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr;
  gap: 48px;
  padding-bottom: 48px;
}

.footer-brand .logo {
  color: var(--white);
  margin-bottom: 12px;
}

.footer-brand p {
  font-size: 0.925rem;
  line-height: 1.6;
}

.footer-links h4 {
  color: var(--white);
  font-size: 0.9rem;
  font-weight: 700;
  margin-bottom: 16px;
}

.footer-links ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-links a {
  color: var(--gray-400);
  text-decoration: none;
  font-size: 0.9rem;
  transition: color var(--transition);
}

.footer-links a:hover {
  color: var(--white);
}

.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.08);
  padding: 24px 0;
  text-align: center;
  font-size: 0.85rem;
}

/* ===== Responsive ===== */
@media (max-width: 768px) {
  .nav-toggle {
    display: flex;
  }

  .nav-links {
    display: none;
    position: absolute;
    top: 72px;
    left: 0;
    right: 0;
    background: var(--white);
    flex-direction: column;
    padding: 16px 24px;
    gap: 4px;
    border-bottom: 1px solid var(--gray-200);
    box-shadow: var(--shadow);
  }

  .nav-links.active {
    display: flex;
  }

  .nav-links a {
    display: block;
    padding: 10px 0;
  }

  .hero {
    padding: 130px 24px 72px;
  }

  .hero-stats {
    gap: 24px;
  }

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

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

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

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

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

@media (max-width: 480px) {
  .hero h1 {
    font-size: 1.85rem;
  }

  .hero-stats {
    flex-direction: column;
    gap: 16px;
  }
}