/* ===== CSS Custom Properties ===== */
:root {
  --color-bg-primary: #FAFBFC;
  --color-bg-secondary: #FFFFFF;
  --color-bg-dark: #0A1628;
  --color-bg-card: #FFFFFF;
  --color-bg-footer: #060F1E;

  --color-text-primary: #1B2838;
  --color-text-secondary: #526477;
  --color-text-light: #8899AA;
  --color-text-on-dark: #E4EAF0;
  --color-text-on-accent: #FFFFFF;

  --color-accent: #2563EB;
  --color-accent-hover: #1D4ED8;
  --color-accent-light: #DBEAFE;
  --color-teal: #0D9488;
  --color-teal-light: #CCFBF1;
  --color-amber: #D97706;
  --color-amber-light: #FEF3C7;

  --color-border: #E2E8F0;
  --color-border-light: #F1F5F9;

  --shadow-sm: 0 1px 2px rgba(10, 22, 40, 0.06);
  --shadow-md: 0 4px 12px rgba(10, 22, 40, 0.08);
  --shadow-lg: 0 12px 40px rgba(10, 22, 40, 0.12);
  --shadow-xl: 0 20px 60px rgba(10, 22, 40, 0.16);

  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-xl: 24px;

  --font-sans: 'Inter', 'Segoe UI', system-ui, -apple-system, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', 'Consolas', monospace;

  --max-width: 1200px;
  --header-height: 72px;
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-sans);
  color: var(--color-text-primary);
  background-color: var(--color-bg-primary);
  line-height: 1.7;
  min-height: 100vh;
}

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

a {
  color: var(--color-accent);
  text-decoration: none;
  transition: color 0.2s ease;
}

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

ul {
  list-style: none;
}

/* ===== Typography ===== */
h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.25;
  color: var(--color-text-primary);
}

h1 { font-size: clamp(2.4rem, 5vw, 3.6rem); letter-spacing: -0.02em; }
h2 { font-size: clamp(1.8rem, 3.5vw, 2.4rem); letter-spacing: -0.01em; }
h3 { font-size: clamp(1.2rem, 2vw, 1.5rem); }
h4 { font-size: 1.1rem; }

p {
  color: var(--color-text-secondary);
}

/* ===== Container ===== */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

/* ===== Header / Navigation ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--color-border);
  height: var(--header-height);
  display: flex;
  align-items: center;
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  font-size: 1.35rem;
  color: var(--color-text-primary);
  letter-spacing: -0.01em;
}

.logo-icon {
  width: 38px;
  height: 38px;
  background: linear-gradient(135deg, var(--color-accent), var(--color-teal));
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #FFFFFF;
  font-weight: 900;
  font-size: 1.1rem;
}

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

.main-nav a {
  color: var(--color-text-secondary);
  font-weight: 500;
  font-size: 0.95rem;
  transition: color 0.2s;
  position: relative;
}

.main-nav a:hover,
.main-nav a.active {
  color: var(--color-accent);
}

.main-nav a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--color-accent);
  border-radius: 1px;
  transition: width 0.25s ease;
}

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

.nav-cta {
  background: var(--color-accent) !important;
  color: #FFFFFF !important;
  padding: 10px 22px;
  border-radius: var(--radius-sm);
  font-weight: 600 !important;
  transition: background 0.2s !important;
}

.nav-cta:hover {
  background: var(--color-accent-hover) !important;
}

.nav-cta::after {
  display: none !important;
}

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

.nav-toggle span {
  width: 24px;
  height: 2.5px;
  background: var(--color-text-primary);
  border-radius: 2px;
  transition: transform 0.3s, opacity 0.3s;
}

/* ===== Hero Section ===== */
.hero {
  position: relative;
  background: var(--color-bg-dark);
  color: var(--color-text-on-dark);
  padding: 100px 0 80px;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 800px;
  height: 800px;
  background: radial-gradient(circle, rgba(37, 99, 235, 0.18) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}

.hero::after {
  content: '';
  position: absolute;
  bottom: -30%;
  left: -10%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(13, 148, 136, 0.12) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}

.hero .container {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.hero-content h1 {
  color: #FFFFFF;
  margin-bottom: 20px;
}

.hero-content .hero-subtitle {
  font-size: 1.15rem;
  color: #94A3B8;
  margin-bottom: 32px;
  max-width: 480px;
  line-height: 1.7;
}

.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 32px;
  font-size: 0.95rem;
  font-weight: 600;
  border-radius: var(--radius-sm);
  border: none;
  cursor: pointer;
  transition: all 0.2s ease;
  text-decoration: none;
  line-height: 1;
  font-family: var(--font-sans);
}

.btn-primary {
  background: var(--color-accent);
  color: #FFFFFF;
}

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

.btn-outline {
  background: transparent;
  color: #FFFFFF;
  border: 2px solid rgba(255, 255, 255, 0.25);
}

.btn-outline:hover {
  border-color: #FFFFFF;
  color: #FFFFFF;
  background: rgba(255, 255, 255, 0.06);
}

.btn-secondary {
  background: var(--color-bg-primary);
  color: var(--color-text-primary);
  border: 1px solid var(--color-border);
}

.btn-secondary:hover {
  background: var(--color-border-light);
  color: var(--color-text-primary);
}

.hero-visual {
  display: flex;
  justify-content: center;
  align-items: center;
}

.hero-dashboard {
  width: 100%;
  max-width: 500px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-lg);
  padding: 28px;
}

.dash-row {
  display: flex;
  gap: 12px;
  margin-bottom: 12px;
}

.dash-block {
  flex: 1;
  height: 14px;
  border-radius: 4px;
  background: rgba(255, 255, 255, 0.06);
}

.dash-block.accent {
  background: var(--color-accent);
  opacity: 0.35;
}

.dash-block.teal {
  background: var(--color-teal);
  opacity: 0.25;
  width: 60%;
}

.dash-card {
  display: flex;
  gap: 12px;
  padding: 14px;
  background: rgba(255, 255, 255, 0.04);
  border-radius: var(--radius-sm);
  margin-bottom: 10px;
}

.dash-card .dash-circle {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.1);
  flex-shrink: 0;
}

.dash-card .dash-lines {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.dash-card .dash-line {
  height: 8px;
  border-radius: 4px;
  background: rgba(255, 255, 255, 0.07);
}

/* ===== Stats Strip ===== */
.stats-strip {
  background: var(--color-bg-secondary);
  border-bottom: 1px solid var(--color-border);
  padding: 40px 0;
}

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

.stat-item .stat-number {
  font-size: 2.4rem;
  font-weight: 800;
  color: var(--color-accent);
  letter-spacing: -0.02em;
  line-height: 1.1;
  margin-bottom: 6px;
}

.stat-item .stat-label {
  font-size: 0.9rem;
  color: var(--color-text-light);
  font-weight: 500;
}

/* ===== Section Commons ===== */
.section {
  padding: 90px 0;
}

.section-header {
  text-align: center;
  margin-bottom: 56px;
}

.section-header h2 {
  margin-bottom: 12px;
}

.section-header .section-subtitle {
  font-size: 1.05rem;
  color: var(--color-text-light);
  max-width: 560px;
  margin: 0 auto;
}

.section-tag {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-accent);
  background: var(--color-accent-light);
  padding: 6px 14px;
  border-radius: 100px;
  margin-bottom: 16px;
}

/* ===== Services Section ===== */
.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.service-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 36px 30px;
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}

.service-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--color-accent), var(--color-teal));
  opacity: 0;
  transition: opacity 0.3s ease;
}

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

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

.service-icon {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 22px;
  font-size: 1.4rem;
}

.service-icon.blue {
  background: var(--color-accent-light);
  color: var(--color-accent);
}

.service-icon.teal {
  background: var(--color-teal-light);
  color: var(--color-teal);
}

.service-icon.amber {
  background: var(--color-amber-light);
  color: var(--color-amber);
}

.service-card h3 {
  margin-bottom: 10px;
  font-size: 1.15rem;
}

.service-card p {
  font-size: 0.93rem;
  color: var(--color-text-secondary);
  line-height: 1.65;
}

/* ===== Process Section ===== */
.process-section {
  background: var(--color-bg-dark);
  color: var(--color-text-on-dark);
  padding: 90px 0;
}

.process-section h2 {
  color: #FFFFFF;
}

.process-section .section-subtitle {
  color: #94A3B8;
}

.process-steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  counter-reset: step;
}

.process-step {
  text-align: center;
  position: relative;
  padding: 0 12px;
}

.process-step::before {
  counter-increment: step;
  content: counter(step);
  display: flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  margin: 0 auto 20px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--color-accent), var(--color-teal));
  color: #FFFFFF;
  font-weight: 800;
  font-size: 1.15rem;
}

.process-step h4 {
  color: #FFFFFF;
  margin-bottom: 8px;
  font-size: 1.05rem;
}

.process-step p {
  color: #94A3B8;
  font-size: 0.9rem;
}

/* ===== Industries Section ===== */
.industries-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.industry-tag {
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 18px 20px;
  font-size: 0.93rem;
  font-weight: 500;
  color: var(--color-text-secondary);
  transition: all 0.2s;
  display: flex;
  align-items: center;
  gap: 10px;
  cursor: default;
}

.industry-tag:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
  box-shadow: var(--shadow-sm);
}

.industry-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-accent);
  flex-shrink: 0;
}

/* ===== About Section ===== */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.about-visual {
  background: linear-gradient(135deg, var(--color-accent-light), var(--color-teal-light));
  border-radius: var(--radius-xl);
  padding: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 360px;
}

.about-icon-large {
  font-size: 4rem;
  opacity: 0.8;
}

.about-content h2 {
  margin-bottom: 16px;
}

.about-content p {
  font-size: 1.02rem;
  margin-bottom: 16px;
  line-height: 1.75;
}

.about-details {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin-top: 28px;
}

.about-detail h4 {
  font-size: 0.95rem;
  color: var(--color-text-primary);
  margin-bottom: 4px;
}

.about-detail p {
  font-size: 0.88rem;
  color: var(--color-text-light);
  margin-bottom: 0;
}

/* ===== CTA Section ===== */
.cta-section {
  background: linear-gradient(135deg, var(--color-accent), #1E40AF);
  padding: 80px 0;
  text-align: center;
}

.cta-section h2 {
  color: #FFFFFF;
  margin-bottom: 12px;
}

.cta-section p {
  color: rgba(255, 255, 255, 0.8);
  font-size: 1.08rem;
  margin-bottom: 32px;
}

.cta-section .btn-primary {
  background: #FFFFFF;
  color: var(--color-accent);
  font-size: 1rem;
  padding: 16px 40px;
}

.cta-section .btn-primary:hover {
  background: #F1F5F9;
  color: var(--color-accent-hover);
}

/* ===== Footer ===== */
.site-footer {
  background: var(--color-bg-footer);
  padding: 64px 0 0;
  color: var(--color-text-on-dark);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 48px;
  padding-bottom: 48px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.footer-brand p {
  color: #8899AA;
  font-size: 0.93rem;
  margin-top: 14px;
  max-width: 300px;
}

.footer-col h4 {
  color: #FFFFFF;
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 18px;
}

.footer-col a {
  display: block;
  color: #8899AA;
  font-size: 0.9rem;
  padding: 5px 0;
  transition: color 0.2s;
}

.footer-col a:hover {
  color: #FFFFFF;
}

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 24px 0;
  flex-wrap: wrap;
  gap: 16px;
}

.footer-bottom p {
  color: #556678;
  font-size: 0.85rem;
}

.footer-legal {
  display: flex;
  gap: 24px;
}

.footer-legal a {
  color: #556678;
  font-size: 0.85rem;
}

.footer-legal a:hover {
  color: #FFFFFF;
}

/* ===== Legal Pages (Privacy & Terms) ===== */
.legal-hero {
  background: var(--color-bg-dark);
  padding: 72px 0;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.legal-hero::before {
  content: '';
  position: absolute;
  top: -40%;
  left: 50%;
  transform: translateX(-50%);
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(37, 99, 235, 0.15) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}

.legal-hero h1 {
  color: #FFFFFF;
  margin-bottom: 12px;
  position: relative;
  z-index: 1;
}

.legal-hero .legal-updated {
  color: #8899AA;
  font-size: 0.9rem;
  position: relative;
  z-index: 1;
}

.legal-content {
  padding: 60px 0 80px;
}

.legal-content .container {
  max-width: 820px;
}

.legal-block {
  margin-bottom: 40px;
}

.legal-block:last-child {
  margin-bottom: 0;
}

.legal-block h2 {
  font-size: 1.35rem;
  color: var(--color-text-primary);
  margin-bottom: 14px;
  padding-bottom: 10px;
  border-bottom: 2px solid var(--color-border);
}

.legal-block h3 {
  font-size: 1.1rem;
  color: var(--color-text-primary);
  margin: 24px 0 10px;
}

.legal-block p {
  font-size: 0.98rem;
  color: var(--color-text-secondary);
  line-height: 1.8;
  margin-bottom: 14px;
}

.legal-block ul {
  list-style: disc;
  padding-left: 24px;
  margin-bottom: 16px;
}

.legal-block ul li {
  font-size: 0.98rem;
  color: var(--color-text-secondary);
  line-height: 1.8;
  margin-bottom: 6px;
}

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

/* ===== Contact Page ===== */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.3fr;
  gap: 48px;
}

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

.contact-info-card h3 {
  margin-bottom: 24px;
}

.contact-item {
  display: flex;
  gap: 14px;
  margin-bottom: 20px;
  align-items: flex-start;
}

.contact-item-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-sm);
  background: var(--color-accent-light);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  flex-shrink: 0;
  color: var(--color-accent);
}

.contact-item h4 {
  font-size: 0.9rem;
  margin-bottom: 2px;
}

.contact-item p {
  font-size: 0.9rem;
  color: var(--color-text-secondary);
}

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

.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--color-text-primary);
  margin-bottom: 6px;
}

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 12px 16px;
  font-size: 0.95rem;
  font-family: var(--font-sans);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-bg-primary);
  color: var(--color-text-primary);
  transition: border-color 0.2s, box-shadow 0.2s;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.12);
}

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .hero .container {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .hero-content .hero-subtitle {
    max-width: 100%;
  }

  .hero-actions {
    justify-content: center;
  }

  .hero-visual {
    display: none;
  }

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

  .process-steps {
    grid-template-columns: repeat(2, 1fr);
    gap: 32px;
  }

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

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

  .about-visual {
    min-height: 200px;
  }

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

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

@media (max-width: 768px) {
  :root {
    --header-height: 60px;
  }

  .main-nav {
    display: none;
    position: absolute;
    top: var(--header-height);
    left: 0;
    right: 0;
    background: var(--color-bg-secondary);
    border-bottom: 1px solid var(--color-border);
    flex-direction: column;
    padding: 24px;
    gap: 16px;
    box-shadow: var(--shadow-lg);
  }

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

  .nav-toggle {
    display: flex;
  }

  .hero {
    padding: 60px 0 50px;
  }

  .hero-content h1 {
    font-size: 2rem;
  }

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

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

  .stats-grid {
    grid-template-columns: 1fr 1fr;
    gap: 24px;
  }

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

  .section {
    padding: 60px 0;
  }

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

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

  .about-details {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 480px) {
  .hero-actions {
    flex-direction: column;
  }

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

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

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

  .hero {
    padding: 40px 0;
  }
}