/* Variables */
:root {
  --primary: #2563eb;
  --primary-dark: #1d4ed8;
  --primary-light: #eff6ff;
  --secondary: #64748b;
  --success: #22c55e;
  --warning: #f59e0b;
  --danger: #ef4444;
  --white: #ffffff;
  --gray-50: #f8fafc;
  --gray-100: #f1f5f9;
  --gray-200: #e2e8f0;
  --gray-300: #cbd5e1;
  --gray-400: #94a3b8;
  --gray-500: #64748b;
  --gray-600: #475569;
  --gray-700: #334155;
  --gray-800: #1e293b;
  --gray-900: #0f172a;
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow: 0 1px 3px 0 rgb(0 0 0 / 0.1), 0 1px 2px -1px rgb(0 0 0 / 0.1);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px 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);
  --radius: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  font-size: 16px;
  line-height: 1.6;
  color: var(--gray-800);
  background: var(--white);
}

/* Container */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.2;
  color: var(--gray-900);
}

h1 { font-size: 3rem; }
h2 { font-size: 2.25rem; }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.25rem; }

@media (max-width: 768px) {
  h1 { font-size: 2rem; }
  h2 { font-size: 1.75rem; }
  h3 { font-size: 1.25rem; }
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 24px;
  font-size: 1rem;
  font-weight: 600;
  text-decoration: none;
  border: none;
  border-radius: var(--radius);
  cursor: pointer;
  transition: all 0.2s ease;
}

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

.btn-primary:hover {
  background: var(--primary-dark);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.btn-secondary {
  background: var(--white);
  color: var(--gray-700);
  border: 2px solid var(--gray-200);
}

.btn-secondary:hover {
  background: var(--gray-50);
  border-color: var(--gray-300);
}

.btn-large {
  padding: 16px 32px;
  font-size: 1.125rem;
}

.btn-full {
  width: 100%;
}

/* Header */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background: var(--white);
  box-shadow: var(--shadow);
  z-index: 100;
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--gray-900);
  text-decoration: none;
}

.logo-icon {
  color: var(--primary);
  font-size: 1.75rem;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
}

.nav-links a {
  color: var(--gray-600);
  text-decoration: none;
  font-weight: 500;
  transition: color 0.2s;
}

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

@media (max-width: 768px) {
  .nav-links a:not(.btn) {
    display: none;
  }
}

/* Hero Section */
.hero {
  padding: 160px 0 100px;
  background: linear-gradient(135deg, var(--primary-light) 0%, var(--white) 100%);
}

.hero-content {
  max-width: 800px;
  text-align: center;
  margin: 0 auto;
}

.hero h1 {
  margin-bottom: 24px;
}

.hero-subtitle {
  font-size: 1.25rem;
  color: var(--gray-600);
  margin-bottom: 40px;
}

.hero-buttons {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 48px;
}

.chat-icon {
  font-size: 1.25rem;
}

.trust-badges {
  display: flex;
  gap: 32px;
  justify-content: center;
  flex-wrap: wrap;
}

.badge {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--gray-600);
  font-size: 0.875rem;
}

.badge-icon {
  color: var(--success);
  font-weight: bold;
}

/* Services Section */
.services {
  padding: 100px 0;
  background: var(--white);
}

.section-title {
  text-align: center;
  margin-bottom: 16px;
}

.section-subtitle {
  text-align: center;
  color: var(--gray-500);
  font-size: 1.125rem;
  margin-bottom: 60px;
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 32px;
}

.service-card {
  position: relative;
  padding: 40px 32px;
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-xl);
  transition: all 0.3s ease;
}

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

.service-card.featured {
  border-color: var(--primary);
  box-shadow: var(--shadow-md);
}

.service-badge {
  position: absolute;
  top: -12px;
  right: 24px;
  background: var(--primary);
  color: var(--white);
  padding: 4px 16px;
  border-radius: 20px;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
}

.service-icon {
  font-size: 3rem;
  margin-bottom: 24px;
}

.service-card h3 {
  margin-bottom: 16px;
}

.service-card > p {
  color: var(--gray-600);
  margin-bottom: 24px;
}

.service-features {
  list-style: none;
}

.service-features li {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 8px 0;
  color: var(--gray-600);
}

.service-features li::before {
  content: "✓";
  color: var(--success);
  font-weight: bold;
}

/* How it Works */
.how-it-works {
  padding: 100px 0;
  background: var(--gray-50);
}

.steps {
  display: flex;
  align-items: flex-start;
  justify-content: center;
  gap: 24px;
  flex-wrap: wrap;
}

.step {
  flex: 1;
  min-width: 220px;
  max-width: 280px;
  text-align: center;
  padding: 32px 24px;
}

.step-number {
  width: 60px;
  height: 60px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--primary);
  color: var(--white);
  font-size: 1.5rem;
  font-weight: 700;
  border-radius: 50%;
  margin: 0 auto 24px;
}

.step h3 {
  margin-bottom: 12px;
}

.step p {
  color: var(--gray-600);
  font-size: 0.9375rem;
}

.step-arrow {
  font-size: 2rem;
  color: var(--gray-300);
  padding-top: 48px;
}

@media (max-width: 768px) {
  .step-arrow {
    display: none;
  }
}

/* Contact Section */
.contact {
  padding: 100px 0;
  background: var(--white);
}

.contact-wrapper {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: start;
}

@media (max-width: 900px) {
  .contact-wrapper {
    grid-template-columns: 1fr;
    gap: 40px;
  }
}

.contact-info h2 {
  margin-bottom: 16px;
}

.contact-info > p {
  color: var(--gray-600);
  margin-bottom: 40px;
}

.contact-benefits {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.benefit {
  display: flex;
  gap: 16px;
}

.benefit-icon {
  font-size: 1.5rem;
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--primary-light);
  border-radius: var(--radius);
  flex-shrink: 0;
}

.benefit strong {
  display: block;
  margin-bottom: 4px;
}

.benefit p {
  color: var(--gray-500);
  font-size: 0.875rem;
  margin: 0;
}

/* Contact Form */
.contact-form {
  background: var(--gray-50);
  padding: 40px;
  border-radius: var(--radius-xl);
}

.form-group {
  margin-bottom: 24px;
}

.form-group label {
  display: block;
  font-weight: 500;
  margin-bottom: 8px;
  color: var(--gray-700);
}

.form-group input,
.form-group select {
  width: 100%;
  padding: 14px 16px;
  font-size: 1rem;
  border: 1px solid var(--gray-300);
  border-radius: var(--radius);
  background: var(--white);
  transition: border-color 0.2s, box-shadow 0.2s;
}

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

.form-group input::placeholder {
  color: var(--gray-400);
}

.form-disclaimer {
  text-align: center;
  font-size: 0.75rem;
  color: var(--gray-500);
  margin-top: 16px;
}

/* Footer */
.footer {
  padding: 80px 0 24px;
  background: var(--gray-900);
  color: var(--gray-400);
}

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

@media (max-width: 900px) {
  .footer-content {
    grid-template-columns: 1fr 1fr;
    gap: 40px;
  }
}

@media (max-width: 600px) {
  .footer-content {
    grid-template-columns: 1fr;
  }
}

.footer-brand .logo {
  color: var(--white);
  margin-bottom: 16px;
}

.footer-brand p {
  font-size: 0.875rem;
}

.footer-links h4 {
  color: var(--white);
  margin-bottom: 20px;
  font-size: 1rem;
}

.footer-links a {
  display: block;
  color: var(--gray-400);
  text-decoration: none;
  padding: 6px 0;
  font-size: 0.875rem;
  transition: color 0.2s;
}

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

.footer-social h4 {
  color: var(--white);
  margin-bottom: 20px;
  font-size: 1rem;
}

.social-links {
  display: flex;
  gap: 12px;
}

.social-link {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--gray-800);
  color: var(--gray-400);
  text-decoration: none;
  border-radius: var(--radius);
  font-weight: 600;
  transition: all 0.2s;
}

.social-link:hover {
  background: var(--primary);
  color: var(--white);
}

.footer-bottom {
  padding-top: 24px;
  border-top: 1px solid var(--gray-800);
  text-align: center;
  font-size: 0.875rem;
}

.footer-bottom .powered-by {
  margin-top: 8px;
  font-size: 0.75rem;
  color: var(--gray-500);
}

.footer-bottom .powered-by a {
  color: var(--gray-400);
  text-decoration: none;
  transition: color 0.2s;
}

.footer-bottom .powered-by a:hover {
  color: var(--primary);
}

/* Chat Widget */
.chat-widget {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 1000;
}

.chat-toggle {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background: var(--primary);
  color: var(--white);
  border: none;
  cursor: pointer;
  box-shadow: var(--shadow-lg);
  transition: all 0.3s ease;
  font-size: 1.5rem;
}

.chat-toggle:hover {
  transform: scale(1.1);
  background: var(--primary-dark);
}

.chat-window {
  position: absolute;
  bottom: 80px;
  right: 0;
  width: 380px;
  max-width: calc(100vw - 48px);
  background: var(--white);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-xl);
  overflow: hidden;
  display: none;
  flex-direction: column;
}

.chat-window.open {
  display: flex;
  animation: slideUp 0.3s ease;
}

@keyframes slideUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.chat-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 20px;
  background: var(--primary);
  color: var(--white);
}

.chat-header-info {
  display: flex;
  align-items: center;
  gap: 12px;
}

.chat-avatar {
  font-size: 2rem;
}

.chat-header-info strong {
  display: block;
  font-size: 1rem;
}

.chat-status {
  font-size: 0.75rem;
  opacity: 0.9;
}

.chat-close {
  background: none;
  border: none;
  color: var(--white);
  font-size: 1.5rem;
  cursor: pointer;
  padding: 4px;
  line-height: 1;
}

.chat-messages {
  flex: 1;
  padding: 20px;
  overflow-y: auto;
  max-height: 320px;
  min-height: 200px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.chat-message {
  max-width: 85%;
  padding: 12px 16px;
  border-radius: var(--radius-lg);
  font-size: 0.9375rem;
  line-height: 1.5;
}

.chat-message.bot {
  background: var(--gray-100);
  color: var(--gray-800);
  align-self: flex-start;
  border-bottom-left-radius: 4px;
}

.chat-message.user {
  background: var(--primary);
  color: var(--white);
  align-self: flex-end;
  border-bottom-right-radius: 4px;
}

.chat-message p {
  margin: 0;
}

.chat-suggestions {
  padding: 0 20px 12px;
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.chat-suggestions button {
  padding: 8px 14px;
  font-size: 0.8125rem;
  background: var(--gray-100);
  border: 1px solid var(--gray-200);
  border-radius: 20px;
  cursor: pointer;
  transition: all 0.2s;
  color: var(--gray-700);
}

.chat-suggestions button:hover {
  background: var(--primary-light);
  border-color: var(--primary);
  color: var(--primary);
}

.chat-input-form {
  display: flex;
  padding: 16px 20px;
  border-top: 1px solid var(--gray-200);
  gap: 12px;
}

.chat-input-form input {
  flex: 1;
  padding: 12px 16px;
  border: 1px solid var(--gray-300);
  border-radius: var(--radius);
  font-size: 0.9375rem;
}

.chat-input-form input:focus {
  outline: none;
  border-color: var(--primary);
}

.chat-input-form button {
  width: 44px;
  height: 44px;
  background: var(--primary);
  color: var(--white);
  border: none;
  border-radius: var(--radius);
  cursor: pointer;
  font-size: 1.25rem;
  transition: background 0.2s;
}

.chat-input-form button:hover {
  background: var(--primary-dark);
}

/* Typing indicator */
.typing-indicator {
  display: flex;
  gap: 4px;
  padding: 12px 16px;
  background: var(--gray-100);
  border-radius: var(--radius-lg);
  border-bottom-left-radius: 4px;
  align-self: flex-start;
  max-width: 60px;
}

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

.typing-indicator span:nth-child(1) { animation-delay: -0.32s; }
.typing-indicator span:nth-child(2) { animation-delay: -0.16s; }

@keyframes bounce {
  0%, 80%, 100% { transform: scale(0); }
  40% { transform: scale(1); }
}

/* Modal */
.modal {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.5);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 2000;
  padding: 24px;
}

.modal.open {
  display: flex;
}

.modal-content {
  background: var(--white);
  padding: 48px;
  border-radius: var(--radius-xl);
  text-align: center;
  max-width: 400px;
  animation: modalPop 0.3s ease;
}

@keyframes modalPop {
  from {
    opacity: 0;
    transform: scale(0.9);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

.modal-icon {
  width: 80px;
  height: 80px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--success);
  color: var(--white);
  font-size: 2.5rem;
  border-radius: 50%;
  margin: 0 auto 24px;
}

.modal-content h3 {
  margin-bottom: 12px;
}

.modal-content p {
  color: var(--gray-600);
  margin-bottom: 24px;
}

/* Utilities */
.text-center { text-align: center; }
.mb-4 { margin-bottom: 1rem; }
.mb-8 { margin-bottom: 2rem; }

/* Loading state for buttons */
.btn.loading {
  position: relative;
  color: transparent;
  pointer-events: none;
}

.btn.loading::after {
  content: "";
  position: absolute;
  width: 20px;
  height: 20px;
  border: 2px solid var(--white);
  border-top-color: transparent;
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}