/* ========================================
   DATALABSYSTEMS - Landing Page Styles
   Inspired by eloqwnt.com
   ======================================== */

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

:root {
  --bg-primary: #0B1A2E;
  --bg-secondary: #0F2240;
  --bg-surface: #132A4A;
  --bg-card: #0D1F38;
  --white: #FFFFFF;
  --text-muted: #8BA3C4;
  --text-dim: #5A7A9E;
  --accent: #3B82F6;
  --accent-light: #60A5FA;
  --accent-cyan: #22D3EE;
  --gradient-start: #3B82F6;
  --gradient-end: #22D3EE;
  --border: rgba(139, 163, 196, 0.12);
  --border-hover: rgba(139, 163, 196, 0.25);
  --radius: 12px;
  --radius-lg: 20px;
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --font: 'DM Sans', -apple-system, BlinkMacSystemFont, sans-serif;
}

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

body {
  font-family: var(--font);
  background: var(--bg-primary);
  color: var(--white);
  line-height: 1.6;
  overflow-x: hidden;
}

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

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

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

/* --- SECTION LABEL (dot + text) --- */
.section-label {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 0.85rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 24px;
}

.section-label .dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent);
}

.section-heading {
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 600;
  line-height: 1.15;
  margin-bottom: 60px;
}

/* --- GRADIENT TEXT --- */
.gradient-text {
  background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* --- REVEAL ANIMATION --- */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s cubic-bezier(0.4, 0, 0.2, 1),
              transform 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ========================================
   NAVBAR
   ======================================== */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 16px 0;
  transition: var(--transition);
  background: transparent;
}

.navbar.scrolled {
  background: rgba(11, 26, 46, 0.92);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  padding: 12px 0;
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
}

.logo-img {
  width: 36px;
  height: 36px;
  border-radius: 8px;
}

.logo-text {
  font-size: 1.1rem;
  font-weight: 600;
  letter-spacing: -0.02em;
}

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

.nav-link {
  font-size: 0.9rem;
  color: var(--text-muted);
  transition: color var(--transition);
  position: relative;
}

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

.nav-link:hover,
.nav-link.active {
  color: var(--white);
}

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

.nav-cta {
  display: inline-flex;
  align-items: center;
  padding: 10px 24px;
  background: var(--accent);
  color: var(--white);
  border-radius: 100px;
  font-size: 0.9rem;
  font-weight: 500;
  transition: var(--transition);
}

.nav-cta:hover {
  background: var(--accent-light);
  transform: translateY(-1px);
}

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

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

/* ========================================
   HERO
   ======================================== */
.hero {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 120px 24px 80px;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -200px;
  left: 50%;
  transform: translateX(-50%);
  width: 800px;
  height: 800px;
  background: radial-gradient(circle, rgba(59, 130, 246, 0.12) 0%, transparent 70%);
  pointer-events: none;
}

.hero-container {
  max-width: 900px;
  position: relative;
  z-index: 1;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 18px;
  background: rgba(59, 130, 246, 0.1);
  border: 1px solid rgba(59, 130, 246, 0.2);
  border-radius: 100px;
  font-size: 0.8rem;
  color: var(--accent-light);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 32px;
  opacity: 0;
  animation: fadeInUp 0.8s 0.2s forwards;
}

.badge-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

.hero-heading {
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.03em;
  margin-bottom: 24px;
  opacity: 0;
  animation: fadeInUp 0.8s 0.4s forwards;
}

.hero-sub {
  font-size: clamp(1rem, 2vw, 1.2rem);
  color: var(--text-muted);
  max-width: 640px;
  margin: 0 auto 40px;
  line-height: 1.7;
  opacity: 0;
  animation: fadeInUp 0.8s 0.6s forwards;
}

.hero-actions {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
  opacity: 0;
  animation: fadeInUp 0.8s 0.8s forwards;
}

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

/* --- BUTTONS --- */
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 32px;
  background: var(--accent);
  color: var(--white);
  border-radius: 100px;
  font-size: 1rem;
  font-weight: 500;
  font-family: var(--font);
  border: none;
  cursor: pointer;
  transition: var(--transition);
}

.btn-primary:hover {
  background: var(--accent-light);
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(59, 130, 246, 0.3);
}

.btn-primary svg {
  transition: transform var(--transition);
}

.btn-primary:hover svg {
  transform: translateX(4px);
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  padding: 14px 32px;
  background: transparent;
  color: var(--text-muted);
  border: 1px solid var(--border);
  border-radius: 100px;
  font-size: 1rem;
  font-weight: 500;
  transition: var(--transition);
}

.btn-secondary:hover {
  border-color: var(--border-hover);
  color: var(--white);
}

.btn-full {
  width: 100%;
  justify-content: center;
}

/* --- HERO SCROLL --- */
.hero-scroll {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  animation: bounce 2s infinite;
  color: var(--text-dim);
}

@keyframes bounce {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50% { transform: translateX(-50%) translateY(8px); }
}

/* ========================================
   STATS INFINITE SCROLL
   ======================================== */
.stats-section {
  padding: 32px 0;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  overflow: hidden;
  background: var(--bg-secondary);
}

.stats-track {
  display: flex;
  width: max-content;
}

.stats-content {
  display: flex;
  gap: 60px;
  animation: scroll 25s linear infinite;
  padding-right: 60px;
}

.stat-item {
  white-space: nowrap;
  font-size: 1rem;
  font-weight: 500;
  color: var(--text-muted);
  letter-spacing: 0.02em;
}

@keyframes scroll {
  0% { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}

/* ========================================
   ABOUT
   ======================================== */
.about-section {
  padding: 140px 0;
}

.about-grid {
  max-width: 800px;
}

.about-heading {
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  font-weight: 600;
  line-height: 1.2;
  margin-bottom: 32px;
}

.about-text {
  font-size: 1.05rem;
  color: var(--text-muted);
  line-height: 1.8;
  margin-bottom: 20px;
}

.about-values {
  margin-top: 48px;
  display: flex;
  flex-direction: column;
  gap: 28px;
}

.value-item {
  display: flex;
  gap: 20px;
  align-items: flex-start;
}

.value-icon {
  width: 48px;
  height: 48px;
  min-width: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(59, 130, 246, 0.1);
  border: 1px solid rgba(59, 130, 246, 0.2);
  border-radius: 12px;
  color: var(--accent);
}

.value-item h4 {
  font-size: 1.05rem;
  font-weight: 600;
  margin-bottom: 4px;
}

.value-item p {
  font-size: 0.95rem;
  color: var(--text-muted);
  line-height: 1.6;
}

/* ========================================
   SERVICES
   ======================================== */
.services-section {
  padding: 140px 0;
  background: var(--bg-secondary);
}

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

.service-card {
  padding: 40px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}

.service-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--gradient-start), var(--gradient-end));
  opacity: 0;
  transition: opacity var(--transition);
}

.service-card:hover {
  border-color: var(--border-hover);
  transform: translateY(-4px);
}

.service-card:hover::before {
  opacity: 1;
}

.service-number {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--accent);
  margin-bottom: 20px;
}

.service-title {
  font-size: 1.4rem;
  font-weight: 600;
  margin-bottom: 12px;
}

.service-desc {
  font-size: 0.95rem;
  color: var(--text-muted);
  line-height: 1.7;
  margin-bottom: 20px;
}

.service-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 24px;
}

.service-tags span {
  padding: 4px 12px;
  background: rgba(59, 130, 246, 0.08);
  border: 1px solid rgba(59, 130, 246, 0.15);
  border-radius: 100px;
  font-size: 0.8rem;
  color: var(--accent-light);
}

.service-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--accent);
  transition: var(--transition);
}

.service-link svg {
  transition: transform var(--transition);
}

.service-link:hover {
  color: var(--accent-light);
}

.service-link:hover svg {
  transform: translateX(4px);
}

/* ========================================
   PROCESS
   ======================================== */
.process-section {
  padding: 140px 0;
}

.process-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
}

.process-item {
  padding: 32px;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  transition: var(--transition);
}

.process-item:hover {
  border-color: var(--border-hover);
  background: var(--bg-secondary);
}

.process-step {
  font-size: 2rem;
  font-weight: 700;
  background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 16px;
}

.process-item h4 {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 8px;
}

.process-item p {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.6;
}

/* ========================================
   TESTIMONIALS
   ======================================== */
.testimonials-section {
  padding: 140px 0;
  background: var(--bg-secondary);
}

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

.testimonial-card {
  padding: 36px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  transition: var(--transition);
}

.testimonial-card:hover {
  border-color: var(--border-hover);
}

.testimonial-stars {
  display: flex;
  gap: 4px;
  color: #FBBF24;
  margin-bottom: 20px;
}

.testimonial-text {
  font-size: 1rem;
  line-height: 1.7;
  color: var(--text-muted);
  margin-bottom: 28px;
  font-style: italic;
}

.testimonial-author {
  display: flex;
  align-items: center;
  gap: 14px;
}

.author-avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--white);
}

.author-name {
  font-size: 0.95rem;
  font-weight: 600;
}

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

/* ========================================
   CONTACT
   ======================================== */
.contact-section {
  padding: 140px 0;
}

.contact-wrapper {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: start;
}

.contact-heading {
  font-size: clamp(1.8rem, 4vw, 2.5rem);
  font-weight: 600;
  line-height: 1.2;
  margin-bottom: 20px;
}

.contact-text {
  font-size: 1.05rem;
  color: var(--text-muted);
  line-height: 1.7;
  margin-bottom: 32px;
}

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

.contact-item {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--text-muted);
  font-size: 0.95rem;
}

.contact-item svg {
  color: var(--accent);
  min-width: 20px;
}

/* --- FORM --- */
.contact-form {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.form-group label {
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-muted);
}

.form-group input,
.form-group select,
.form-group textarea {
  padding: 14px 18px;
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--white);
  font-family: var(--font);
  font-size: 0.95rem;
  transition: var(--transition);
  outline: none;
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: var(--text-dim);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.form-group select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%238BA3C4' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 16px center;
  padding-right: 40px;
  cursor: pointer;
}

.form-group select option {
  background: var(--bg-secondary);
  color: var(--white);
}

.form-group textarea {
  resize: vertical;
  min-height: 100px;
}

/* ========================================
   FOOTER
   ======================================== */
.footer {
  padding: 80px 0 40px;
  border-top: 1px solid var(--border);
  background: var(--bg-secondary);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 60px;
}

.footer-tagline {
  color: var(--text-dim);
  font-size: 0.95rem;
  margin-top: 12px;
}

.footer-links h5 {
  font-size: 0.85rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-muted);
  margin-bottom: 16px;
}

.footer-links a {
  display: block;
  font-size: 0.9rem;
  color: var(--text-dim);
  padding: 4px 0;
  transition: color var(--transition);
}

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

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 32px;
  border-top: 1px solid var(--border);
}

.footer-bottom p {
  font-size: 0.85rem;
  color: var(--text-dim);
}

.footer-social {
  display: flex;
  gap: 16px;
}

.footer-social a {
  color: var(--text-dim);
  transition: color var(--transition);
}

.footer-social a:hover {
  color: var(--accent);
}

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

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

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

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

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

@media (max-width: 768px) {
  .nav-links {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(11, 26, 46, 0.98);
    backdrop-filter: blur(20px);
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 32px;
    z-index: 999;
  }

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

  .nav-links .nav-link {
    font-size: 1.5rem;
  }

  .nav-cta {
    display: none;
  }

  .nav-toggle {
    display: flex;
    z-index: 1000;
  }

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

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

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

  .hero {
    padding: 100px 24px 60px;
  }

  .hero-heading {
    font-size: 2.2rem;
  }

  .hero-actions {
    flex-direction: column;
    align-items: center;
  }

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

  .service-card {
    padding: 28px;
  }

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

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

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

  .footer-bottom {
    flex-direction: column;
    gap: 16px;
    text-align: center;
  }
}

@media (max-width: 480px) {
  .hero-heading {
    font-size: 1.8rem;
  }

  .section-heading {
    font-size: 1.8rem;
  }

  .about-heading {
    font-size: 1.6rem;
  }

  .contact-heading {
    font-size: 1.6rem;
  }

  .btn-primary,
  .btn-secondary {
    padding: 12px 24px;
    font-size: 0.9rem;
  }
}