/* ============================================================
   DataPulse Pro - SaaS Landing Page
   Global Stylesheet
   ============================================================ */

/* --- CSS Variables --- */
:root {
  --primary: #4f46e5;
  --primary-dark: #3730a3;
  --primary-light: #818cf8;
  --gradient-start: #4f46e5;
  --gradient-end: #312e81;
  --text-dark: #1e293b;
  --text-muted: #64748b;
  --bg-light: #f8fafc;
  --white: #ffffff;
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -2px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.1);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.1);
  --radius-sm: 0.5rem;
  --radius-md: 0.75rem;
  --radius-lg: 1rem;
  --radius-xl: 1.5rem;
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* --- Global Base --- */
*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  margin: 0;
  padding: 0;
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  color: var(--text-dark);
  background-color: var(--white);
  line-height: 1.6;
  overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.2;
  margin-top: 0;
}

p {
  margin-top: 0;
  margin-bottom: 1rem;
  color: var(--text-muted);
}

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

a:hover {
  color: var(--primary-dark);
}

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

.section-padding {
  padding: 5rem 1rem;
}

@media (max-width: 768px) {
  .section-padding {
    padding: 3rem 1rem;
  }
}

/* --- Navbar --- */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  padding: 1rem 0;
  transition: var(--transition);
  background: transparent;
}

.navbar-scrolled {
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: var(--shadow-lg);
  padding: 0.75rem 0;
}

.navbar .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

.navbar-brand {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--white);
  transition: var(--transition);
}

.navbar-scrolled .navbar-brand {
  color: var(--text-dark);
}

.navbar-brand i {
  font-size: 1.75rem;
  color: var(--primary-light);
}

.navbar-links {
  display: flex;
  align-items: center;
  gap: 2rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.navbar-links a {
  color: rgba(255, 255, 255, 0.9);
  font-weight: 500;
  font-size: 0.95rem;
  position: relative;
  padding: 0.25rem 0;
}

.navbar-scrolled .navbar-links a {
  color: var(--text-dark);
}

.navbar-links a::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--primary-light);
  transition: width 0.3s ease;
}

.navbar-links a:hover::after {
  width: 100%;
}

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

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

.navbar-cta-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.625rem 1.5rem;
  background: var(--primary);
  color: var(--white) !important;
  border-radius: 9999px;
  font-weight: 600;
  font-size: 0.9rem;
  transition: var(--transition);
  box-shadow: 0 4px 14px rgba(79, 70, 229, 0.4);
  border: none;
  cursor: pointer;
}

.navbar-cta-btn:hover {
  background: var(--primary-dark);
  box-shadow: 0 6px 20px rgba(79, 70, 229, 0.5);
  transform: translateY(-1px);
}

.navbar-scrolled .navbar-cta-btn {
  color: var(--white) !important;
}

/* Hamburger Menu */
.hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 0;
  z-index: 1001;
}

.hamburger span {
  display: block;
  width: 24px;
  height: 2.5px;
  background: var(--white);
  border-radius: 2px;
  transition: var(--transition);
}

.navbar-scrolled .hamburger span {
  background: var(--text-dark);
}

.hamburger.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.hamburger.active span:nth-child(2) {
  opacity: 0;
}

.hamburger.active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* Mobile Menu */
.mobile-menu {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100vh;
  background: rgba(255, 255, 255, 0.98);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  z-index: 999;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2rem;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.4s ease;
}

.mobile-menu.active {
  opacity: 1;
  pointer-events: all;
}

.mobile-menu a {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--text-dark);
  transition: color 0.2s ease;
}

.mobile-menu a:hover {
  color: var(--primary);
}

.mobile-menu .navbar-cta-btn {
  font-size: 1rem;
  padding: 0.75rem 2rem;
}

/* --- Gradient Backgrounds --- */
.gradient-hero {
  background: linear-gradient(135deg, #312e81 0%, #4f46e5 40%, #6366f1 70%, #818cf8 100%);
  position: relative;
  overflow: hidden;
}

.gradient-hero::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 60%;
  height: 200%;
  background: radial-gradient(circle, rgba(255,255,255,0.08) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}

.gradient-hero::after {
  content: '';
  position: absolute;
  bottom: -30%;
  left: -10%;
  width: 40%;
  height: 150%;
  background: radial-gradient(circle, rgba(255,255,255,0.05) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}

.gradient-cta {
  background: linear-gradient(135deg, #4f46e5 0%, #4338ca 30%, #3730a3 70%, #312e81 100%);
  position: relative;
  overflow: hidden;
}

.gradient-cta::before {
  content: '';
  position: absolute;
  top: 0;
  right: 0;
  width: 300px;
  height: 300px;
  background: radial-gradient(circle, rgba(255,255,255,0.1) 0%, transparent 70%);
  border-radius: 50%;
  transform: translate(30%, -30%);
  pointer-events: none;
}

.gradient-cta::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 250px;
  height: 250px;
  background: radial-gradient(circle, rgba(255,255,255,0.06) 0%, transparent 70%);
  border-radius: 50%;
  transform: translate(-30%, 30%);
  pointer-events: none;
}

/* --- Feature Cards --- */
.feature-card {
  background: var(--white);
  border-radius: var(--radius-xl);
  padding: 2rem 1.75rem;
  box-shadow: var(--shadow-md);
  transition: var(--transition);
  border: 1px solid rgba(0, 0, 0, 0.05);
  position: relative;
  overflow: hidden;
}

.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: linear-gradient(90deg, var(--primary), var(--primary-light));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.4s ease;
}

.feature-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-xl);
  border-color: rgba(79, 70, 229, 0.15);
}

.feature-card:hover::before {
  transform: scaleX(1);
}

.feature-card .icon-circle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: rgba(79, 70, 229, 0.1);
  margin-bottom: 1.25rem;
  transition: var(--transition);
}

.feature-card:hover .icon-circle {
  background: var(--primary);
  color: var(--white);
}

.feature-card .icon-circle i {
  font-size: 1.5rem;
  color: var(--primary);
  transition: var(--transition);
}

.feature-card:hover .icon-circle i {
  color: var(--white);
}

.feature-card h3 {
  font-size: 1.2rem;
  margin-bottom: 0.75rem;
  color: var(--text-dark);
}

.feature-card p {
  font-size: 0.95rem;
  line-height: 1.7;
  margin-bottom: 0;
}

/* --- Stats Section --- */
.stat-item {
  text-align: center;
  padding: 2rem 1rem;
}

.stat-number {
  font-size: 3rem;
  font-weight: 800;
  color: var(--primary);
  line-height: 1;
  margin-bottom: 0.5rem;
  font-variant-numeric: tabular-nums;
}

.stat-number sup {
  font-size: 1.5rem;
  font-weight: 700;
}

.stat-label {
  font-size: 1rem;
  color: var(--text-muted);
  font-weight: 500;
}

/* --- Testimonial Cards --- */
.testimonial-card {
  background: var(--white);
  border-radius: var(--radius-xl);
  padding: 2rem;
  box-shadow: var(--shadow-md);
  border: 1px solid rgba(0, 0, 0, 0.05);
  transition: var(--transition);
}

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

.testimonial-card .stars {
  color: #f59e0b;
  margin-bottom: 1rem;
  font-size: 0.9rem;
}

.testimonial-card .stars i {
  margin-right: 2px;
}

.testimonial-card .testimonial-text {
  font-size: 0.95rem;
  line-height: 1.8;
  color: var(--text-muted);
  margin-bottom: 1.5rem;
  font-style: italic;
}

.testimonial-card .testimonial-author {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.testimonial-card .testimonial-author img {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  object-fit: cover;
  border: 2px solid var(--primary-light);
}

.testimonial-card .testimonial-author .author-name {
  font-weight: 600;
  color: var(--text-dark);
  font-size: 0.95rem;
}

.testimonial-card .testimonial-author .author-role {
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* --- FAQ Accordion --- */
.faq-item {
  background: var(--white);
  border-radius: var(--radius-lg);
  margin-bottom: 0.75rem;
  border: 1px solid rgba(0, 0, 0, 0.06);
  overflow: hidden;
  transition: var(--transition);
}

.faq-item:hover {
  border-color: rgba(79, 70, 229, 0.2);
}

.faq-question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.25rem 1.5rem;
  background: transparent;
  border: none;
  cursor: pointer;
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-dark);
  text-align: left;
  transition: var(--transition);
  gap: 1rem;
}

.faq-question:hover {
  color: var(--primary);
}

.faq-question i.fa-chevron-down {
  font-size: 0.85rem;
  color: var(--text-muted);
  transition: transform 0.3s ease;
  flex-shrink: 0;
}

.faq-item.active .faq-question i.fa-chevron-down {
  transform: rotate(180deg);
  color: var(--primary);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease, padding 0.4s ease;
}

.faq-answer .faq-answer-content {
  padding: 0 1.5rem 1.25rem;
  font-size: 0.95rem;
  line-height: 1.8;
  color: var(--text-muted);
}

.faq-item.active .faq-answer {
  max-height: 500px;
}

.faq-item.active {
  border-color: rgba(79, 70, 229, 0.3);
  box-shadow: var(--shadow-md);
}

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 2rem;
  border-radius: 9999px;
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  transition: var(--transition);
  border: none;
  text-align: center;
}

.btn-primary {
  background: var(--primary);
  color: var(--white);
  box-shadow: 0 4px 14px rgba(79, 70, 229, 0.4);
}

.btn-primary:hover {
  background: var(--primary-dark);
  box-shadow: 0 6px 20px rgba(79, 70, 229, 0.5);
  transform: translateY(-2px);
  color: var(--white);
}

.btn-outline {
  background: transparent;
  color: var(--white);
  border: 2px solid rgba(255, 255, 255, 0.6);
}

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

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

.btn-white:hover {
  background: #f1f5f9;
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
  color: var(--primary-dark);
}

.btn-lg {
  padding: 1rem 2.5rem;
  font-size: 1.05rem;
}

.btn-block {
  display: flex;
  width: 100%;
}

/* --- Footer --- */
.site-footer {
  background: #0f172a;
  color: #cbd5e1;
  padding: 4rem 1rem 2rem;
}

.site-footer h5 {
  color: var(--white);
  font-size: 1rem;
  margin-bottom: 1.25rem;
}

.footer-links {
  list-style: none;
  padding: 0;
  margin: 0;
}

.footer-links li {
  margin-bottom: 0.75rem;
}

.footer-links a {
  color: #94a3b8;
  font-size: 0.9rem;
  transition: var(--transition);
}

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

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  margin-top: 3rem;
  padding-top: 1.5rem;
  text-align: center;
  font-size: 0.85rem;
  color: #64748b;
}

.social-links {
  display: flex;
  gap: 1rem;
  margin-top: 1rem;
}

.social-links a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.08);
  color: #94a3b8;
  font-size: 1rem;
  transition: var(--transition);
}

.social-links a:hover {
  background: var(--primary);
  color: var(--white);
  transform: translateY(-3px);
}

/* --- Page Banner (About & Contact) --- */
.page-banner {
  background: linear-gradient(135deg, #312e81 0%, #4f46e5 60%, #6366f1 100%);
  padding: 8rem 1rem 4rem;
  text-align: center;
  color: var(--white);
}

.page-banner h1 {
  font-size: 2.75rem;
  margin-bottom: 0.75rem;
}

.page-banner p {
  font-size: 1.15rem;
  color: rgba(255, 255, 255, 0.8);
  max-width: 600px;
  margin: 0 auto;
}

/* --- Team Cards --- */
.team-card {
  background: var(--white);
  border-radius: var(--radius-xl);
  padding: 2rem 1.5rem;
  text-align: center;
  box-shadow: var(--shadow-md);
  border: 1px solid rgba(0, 0, 0, 0.05);
  transition: var(--transition);
}

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

.team-card img {
  width: 96px;
  height: 96px;
  border-radius: 50%;
  object-fit: cover;
  margin-bottom: 1rem;
  border: 3px solid var(--primary-light);
}

.team-card h4 {
  font-size: 1.1rem;
  margin-bottom: 0.25rem;
}

.team-card .role {
  font-size: 0.85rem;
  color: var(--primary);
  font-weight: 600;
  margin-bottom: 0.75rem;
}

.team-card .bio {
  font-size: 0.85rem;
  color: var(--text-muted);
  line-height: 1.6;
}

/* --- Value Cards --- */
.value-card {
  background: var(--white);
  border-radius: var(--radius-xl);
  padding: 2.5rem 2rem;
  text-align: center;
  box-shadow: var(--shadow-md);
  border: 1px solid rgba(0, 0, 0, 0.05);
  transition: var(--transition);
}

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

.value-card .value-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 64px;
  height: 64px;
  border-radius: 50%;
  background: rgba(79, 70, 229, 0.1);
  margin-bottom: 1.25rem;
  font-size: 1.5rem;
  color: var(--primary);
}

.value-card h4 {
  font-size: 1.1rem;
  margin-bottom: 0.75rem;
}

.value-card p {
  font-size: 0.9rem;
  margin-bottom: 0;
}

/* --- Contact Form --- */
.contact-form {
  background: var(--white);
  border-radius: var(--radius-xl);
  padding: 2.5rem;
  box-shadow: var(--shadow-lg);
  border: 1px solid rgba(0, 0, 0, 0.05);
}

.contact-form .form-group {
  margin-bottom: 1.25rem;
}

.contact-form label {
  display: block;
  font-weight: 600;
  margin-bottom: 0.5rem;
  color: var(--text-dark);
  font-size: 0.9rem;
}

.contact-form input,
.contact-form textarea,
.contact-form select {
  width: 100%;
  padding: 0.75rem 1rem;
  border: 2px solid #e2e8f0;
  border-radius: var(--radius-md);
  font-size: 0.95rem;
  font-family: inherit;
  transition: var(--transition);
  outline: none;
  background: #f8fafc;
  color: var(--text-dark);
}

.contact-form input:focus,
.contact-form textarea:focus,
.contact-form select:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.15);
  background: var(--white);
}

.contact-form input.error,
.contact-form textarea.error {
  border-color: #ef4444;
  box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.1);
}

.contact-form .error-message {
  font-size: 0.8rem;
  color: #ef4444;
  margin-top: 0.35rem;
  display: none;
}

.contact-form .error-message.visible {
  display: block;
}

.contact-form textarea {
  resize: vertical;
  min-height: 140px;
}

/* Contact Info Cards */
.contact-info-card {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  padding: 1.25rem;
  margin-bottom: 1rem;
  background: #f8fafc;
  border-radius: var(--radius-lg);
  transition: var(--transition);
}

.contact-info-card:hover {
  background: #eef2ff;
}

.contact-info-card .info-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: rgba(79, 70, 229, 0.1);
  color: var(--primary);
  font-size: 1rem;
  flex-shrink: 0;
}

.contact-info-card h5 {
  font-size: 0.9rem;
  margin-bottom: 0.25rem;
}

.contact-info-card p {
  font-size: 0.85rem;
  margin-bottom: 0;
}

.map-placeholder {
  width: 100%;
  height: 280px;
  border-radius: var(--radius-xl);
  background: linear-gradient(135deg, #e0e7ff 0%, #c7d2fe 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary);
  font-weight: 600;
  font-size: 1rem;
  border: 2px dashed rgba(79, 70, 229, 0.3);
}

/* --- Animations --- */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.animate-fade-in-up {
  animation: fadeInUp 0.6s ease forwards;
}

[data-animate] {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

[data-animate].animated {
  opacity: 1;
  transform: translateY(0);
}

/* Animation delays */
.delay-100 { animation-delay: 0.1s; }
.delay-200 { animation-delay: 0.2s; }
.delay-300 { animation-delay: 0.3s; }
.delay-400 { animation-delay: 0.4s; }
.delay-500 { animation-delay: 0.5s; }

/* --- Misc Utilities --- */
.text-gradient {
  background: linear-gradient(135deg, #818cf8, #4f46e5);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.section-badge {
  display: inline-block;
  padding: 0.35rem 1rem;
  background: rgba(79, 70, 229, 0.08);
  color: var(--primary);
  border-radius: 9999px;
  font-weight: 600;
  font-size: 0.8rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  margin-bottom: 1rem;
}

.section-title {
  font-size: 2.25rem;
  margin-bottom: 1rem;
  color: var(--text-dark);
}

.section-subtitle {
  font-size: 1.1rem;
  color: var(--text-muted);
  max-width: 600px;
  margin: 0 auto 3rem;
}

/* Toast notification */
.toast {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  background: #10b981;
  color: var(--white);
  padding: 1rem 2rem;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-xl);
  font-weight: 600;
  z-index: 9999;
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.4s ease, transform 0.4s ease;
  pointer-events: none;
}

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

/* --- Responsive --- */
@media (max-width: 1024px) {
  .section-title {
    font-size: 1.85rem;
  }

  .page-banner h1 {
    font-size: 2.25rem;
  }
}

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

  .navbar-cta-btn {
    display: none;
  }

  .navbar-scrolled .navbar-cta-btn {
    display: none;
  }

  .hamburger {
    display: flex;
  }

  .mobile-menu {
    display: flex;
  }

  .section-title {
    font-size: 1.65rem;
  }

  .page-banner {
    padding: 7rem 1rem 3rem;
  }

  .page-banner h1 {
    font-size: 1.85rem;
  }

  .stat-number {
    font-size: 2.25rem;
  }

  .stat-number sup {
    font-size: 1.15rem;
  }

  .contact-form {
    padding: 1.5rem;
  }
}

@media (max-width: 480px) {
  .hero-buttons {
    flex-direction: column;
    align-items: center;
  }

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

  .feature-card {
    padding: 1.5rem;
  }

  .section-title {
    font-size: 1.4rem;
  }

  .page-banner h1 {
    font-size: 1.5rem;
  }

  .page-banner p {
    font-size: 0.95rem;
  }

  .stat-number {
    font-size: 1.85rem;
  }
}
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