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

:root {
  --color-bg: #ffffff;
  --color-bg-alt: #f4f7f5;
  --color-text: #1a2e1a;
  --color-text-secondary: #5a6e5a;
  --color-accent: #1b3a2a;
  --color-accent-light: #e2ece6;
  --color-border: #d4ddd7;
  --color-primary: #1b3a2a;
  --color-primary-hover: #264d38;
  --color-green-light: #e8f0eb;
  --radius: 6px;
  --shadow-sm: 0 1px 3px rgba(27, 58, 42, 0.06);
  --shadow-md: 0 4px 16px rgba(27, 58, 42, 0.1);
  --font: 'Georgia', 'Times New Roman', serif;
  --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

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

body {
  font-family: var(--font-sans);
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

.container {
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 28px;
}

/* === Navbar === */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--color-border);
  z-index: 100;
}

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

.logo {
  font-family: var(--font-sans);
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--color-text);
  text-decoration: none;
  letter-spacing: -0.02em;
}

.logo-accent {
  color: #3d7a56;
  font-weight: 400;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 36px;
}

.nav-links a {
  color: var(--color-text-secondary);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 500;
  transition: color 0.2s;
}

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

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

.mobile-toggle span {
  width: 22px;
  height: 2px;
  background: var(--color-text);
  transition: all 0.2s;
}

.mobile-menu {
  display: none;
  flex-direction: column;
  padding: 16px 28px 24px;
  gap: 16px;
  border-top: 1px solid var(--color-border);
}

.mobile-menu a {
  color: var(--color-text-secondary);
  text-decoration: none;
  font-size: 0.95rem;
  font-weight: 500;
}

.mobile-menu.open {
  display: flex;
}

/* === Buttons === */
.btn {
  display: inline-block;
  padding: 14px 32px;
  border-radius: var(--radius);
  font-size: 0.9rem;
  font-weight: 600;
  text-decoration: none;
  border: none;
  cursor: pointer;
  transition: all 0.25s;
  font-family: var(--font-sans);
  letter-spacing: 0.01em;
}

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

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

.btn-outline {
  background: transparent;
  color: var(--color-text);
  border: 1px solid var(--color-border);
}

.btn-outline:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.btn-nav {
  padding: 10px 22px;
  background: var(--color-primary);
  color: #fff;
  border-radius: var(--radius);
}

.btn-nav:hover {
  background: var(--color-primary-hover);
  color: #fff !important;
}

.btn-full {
  width: 100%;
  text-align: center;
}

/* === Section Labels === */
.section-label {
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: #3d7a56;
  margin-bottom: 12px;
}

/* === Hero === */
.hero {
  padding: 180px 0 120px;
}

.hero-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.hero-illustration svg {
  width: 100%;
  height: auto;
  max-width: 480px;
}

/* Interactive logo: pieces spring back smoothly when the cursor moves away */
#heroLogo .logo-node,
#heroLogo .logo-dot,
#heroLogo .logo-centre {
  transition: transform 0.5s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.hero h1 {
  font-family: var(--font);
  font-size: 3rem;
  font-weight: 400;
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin-bottom: 24px;
}

.hero-label {
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: #3d7a56;
  margin-bottom: 20px;
}

.hero-subtitle {
  font-size: 1.15rem;
  color: var(--color-text-secondary);
  max-width: 540px;
  line-height: 1.8;
  margin-bottom: 40px;
}

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

/* === Services === */
.services {
  padding: 120px 0;
  background: var(--color-bg-alt);
}

.services h2 {
  font-family: var(--font);
  font-size: 2.2rem;
  font-weight: 400;
  letter-spacing: -0.01em;
  margin-bottom: 56px;
  max-width: 480px;
}

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

.service-card {
  padding: 36px 32px;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  transition: box-shadow 0.25s, transform 0.25s;
}

.service-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-3px);
}

.service-number {
  font-size: 0.75rem;
  font-weight: 700;
  color: #3d7a56;
  letter-spacing: 0.05em;
  margin-bottom: 20px;
}

.service-card h3 {
  font-family: var(--font);
  font-size: 1.15rem;
  font-weight: 400;
  margin-bottom: 12px;
  line-height: 1.3;
}

.service-card p {
  font-size: 0.88rem;
  color: var(--color-text-secondary);
  line-height: 1.7;
}

/* === Business Architecture Section === */
.arch-section {
  padding: 120px 0;
}

/* -- BA Intro -- */
.arch-intro {
  margin-bottom: 56px;
}

.arch-intro h2 {
  font-family: var(--font);
  font-size: 2.2rem;
  font-weight: 400;
  letter-spacing: -0.01em;
  margin-bottom: 28px;
  max-width: 640px;
}

.arch-intro-text {
  max-width: 720px;
}

.arch-intro-text p {
  color: var(--color-text-secondary);
  font-size: 1rem;
  line-height: 1.8;
  margin-bottom: 16px;
}

/* -- BA Capability Cards -- */
.arch-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-bottom: 72px;
}

.arch-card {
  padding: 28px 24px;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  transition: box-shadow 0.25s, transform 0.25s;
}

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

.arch-card h3 {
  font-family: var(--font);
  font-size: 1.05rem;
  font-weight: 400;
  margin-bottom: 10px;
  line-height: 1.3;
}

.arch-card p {
  font-size: 0.88rem;
  color: var(--color-text-secondary);
  line-height: 1.7;
}

/* -- AI Subsection (within BA) -- */
.arch-ai-block {
  background: var(--color-bg-alt);
  border-radius: 12px;
  padding: 48px 40px;
  border: 1px solid var(--color-border);
}

.arch-ai-heading {
  font-family: var(--font);
  font-size: 1.6rem;
  font-weight: 400;
  letter-spacing: -0.01em;
  margin-bottom: 12px;
  color: var(--color-text);
}

.arch-ai-intro {
  color: var(--color-text-secondary);
  font-size: 1rem;
  line-height: 1.8;
  margin-bottom: 36px;
  max-width: 640px;
}

.arch-ai-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 28px;
}

/* Reuse existing AI point styles */
.ai-point {
  display: flex;
  gap: 20px;
  align-items: flex-start;
}

.ai-point-icon {
  flex-shrink: 0;
  width: 48px;
  height: 48px;
  background: var(--color-green-light);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.ai-point h3 {
  font-family: var(--font);
  font-size: 1.05rem;
  font-weight: 400;
  margin-bottom: 6px;
  color: var(--color-text);
}

.ai-point p {
  font-size: 0.88rem;
  color: var(--color-text-secondary);
  line-height: 1.7;
}

/* === Business Analysis === */
.ba-section {
  padding: 120px 0;
  background: var(--color-bg-alt);
}

.ba-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 72px;
  align-items: start;
}

.ba-content h2 {
  font-family: var(--font);
  font-size: 2.2rem;
  font-weight: 400;
  letter-spacing: -0.01em;
  margin-bottom: 28px;
}

.ba-content p {
  color: var(--color-text-secondary);
  font-size: 1rem;
  line-height: 1.8;
  margin-bottom: 16px;
}

.ba-content .btn {
  margin-top: 16px;
}

.ba-cards {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.ba-card {
  padding: 24px;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  transition: box-shadow 0.25s, transform 0.25s;
}

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

.ba-card-icon {
  width: 44px;
  height: 44px;
  background: var(--color-green-light);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
}

.ba-card h3 {
  font-family: var(--font);
  font-size: 1rem;
  font-weight: 400;
  margin-bottom: 8px;
  line-height: 1.3;
}

.ba-card p {
  font-size: 0.84rem;
  color: var(--color-text-secondary);
  line-height: 1.7;
}

/* === Clients === */
.clients {
  padding: 72px 0;
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.clients-label {
  text-align: center;
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--color-text-secondary);
  margin-bottom: 36px;
}

.clients-grid {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 56px;
  flex-wrap: wrap;
}

.client-logo {
  color: var(--color-text);
  opacity: 0.55;
  transition: opacity 0.25s;
}

.client-logo:hover {
  opacity: 0.85;
}

.client-logo svg {
  height: 64px;
  width: auto;
}

/* === About === */
.about {
  padding: 120px 0;
}

.about-content {
  max-width: 640px;
}

.about h2 {
  font-family: var(--font);
  font-size: 2.2rem;
  font-weight: 400;
  letter-spacing: -0.01em;
  margin-bottom: 28px;
}

.about p {
  color: var(--color-text-secondary);
  font-size: 1rem;
  line-height: 1.8;
  margin-bottom: 16px;
}

.about-stats {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-top: 36px;
  padding-top: 36px;
  border-top: 1px solid var(--color-border);
}

.stat {
  display: flex;
  align-items: center;
  gap: 16px;
}

.stat-number {
  font-weight: 700;
  color: #3d7a56;
  font-size: 1rem;
}

.stat-label {
  font-size: 0.9rem;
  color: var(--color-text-secondary);
}

/* === Contact === */
.contact {
  padding: 120px 0;
  background: var(--color-bg-alt);
}

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

.contact-info h2 {
  font-family: var(--font);
  font-size: 2.2rem;
  font-weight: 400;
  letter-spacing: -0.01em;
  margin-bottom: 20px;
}

.contact-info > p {
  color: var(--color-text-secondary);
  font-size: 1rem;
  line-height: 1.8;
  margin-bottom: 32px;
}

.contact-details {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.contact-item {
  display: flex;
  align-items: center;
  gap: 10px;
}

.contact-icon {
  font-size: 1rem;
}

.contact-item a {
  color: var(--color-text);
  text-decoration: none;
  font-size: 0.95rem;
  border-bottom: 1px solid var(--color-border);
  transition: border-color 0.2s;
}

.contact-item a:hover {
  border-color: #3d7a56;
  color: #3d7a56;
}

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

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

.form-group label {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--color-text);
  letter-spacing: 0.02em;
}

.form-group input,
.form-group textarea {
  padding: 12px 16px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  font-size: 0.92rem;
  font-family: var(--font-sans);
  background: var(--color-bg);
  color: var(--color-text);
  outline: none;
  transition: border-color 0.2s;
  resize: vertical;
}

.form-group input:focus,
.form-group textarea:focus {
  border-color: #3d7a56;
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: #b0b0b0;
}

.form-note {
  font-size: 0.85rem;
  color: var(--color-text-secondary);
  min-height: 20px;
}

.form-note.success {
  color: #22763a;
}

/* === Footer === */
.footer {
  border-top: 1px solid var(--color-border);
  padding: 36px 0;
}

.footer-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.footer p {
  color: var(--color-text-secondary);
  font-size: 0.82rem;
}

/* === BA Page Hero === */
.ba-hero {
  padding: 180px 0 80px;
}

.ba-hero-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.ba-hero h1 {
  font-family: var(--font);
  font-size: 2.8rem;
  font-weight: 400;
  line-height: 1.2;
  letter-spacing: -0.02em;
  margin-bottom: 24px;
  max-width: 700px;
}

.ba-hero .hero-subtitle {
  margin-bottom: 32px;
}

.ba-hero-illustration svg {
  width: 100%;
  height: auto;
  max-width: 500px;
}

/* Interactive BA viz: pieces spring back smoothly when cursor moves away */
#baViz .ba-piece,
#baViz .ba-dot,
#baViz .ba-centre {
  transition: transform 0.5s cubic-bezier(0.34, 1.56, 0.64, 1);
}

/* === BA Teaser (homepage) === */
.ba-teaser {
  max-width: 640px;
}

.ba-teaser h2 {
  font-family: var(--font);
  font-size: 2.2rem;
  font-weight: 400;
  letter-spacing: -0.01em;
  margin-bottom: 20px;
}

.ba-teaser p {
  color: var(--color-text-secondary);
  font-size: 1rem;
  line-height: 1.8;
  margin-bottom: 16px;
}

.ba-teaser .btn {
  margin-top: 16px;
}

/* === BA Competencies === */
.ba-competencies {
  padding: 120px 0;
  background: var(--color-bg-alt);
}

.ba-competencies h2 {
  font-family: var(--font);
  font-size: 2.2rem;
  font-weight: 400;
  letter-spacing: -0.01em;
  margin-bottom: 56px;
  max-width: 520px;
}

/* === BA Approach === */
.ba-approach {
  padding: 120px 0;
}

.ba-approach h2 {
  font-family: var(--font);
  font-size: 2.2rem;
  font-weight: 400;
  letter-spacing: -0.01em;
  margin-bottom: 28px;
}

.ba-approach > .container > p {
  color: var(--color-text-secondary);
  font-size: 1rem;
  line-height: 1.8;
  margin-bottom: 16px;
}

/* === Industry Experience === */
.ba-industries {
  padding: 120px 0;
  background: var(--color-bg-alt);
}

.ba-industries h2 {
  font-family: var(--font);
  font-size: 2.2rem;
  font-weight: 400;
  letter-spacing: -0.01em;
  margin-bottom: 40px;
}

.industry-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.industry-tag {
  padding: 10px 20px;
  background: var(--color-accent-light);
  border: 1px solid var(--color-border);
  border-radius: 24px;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--color-text);
}

/* === LinkedIn link === */
.contact-linkedin {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 8px;
}

.contact-linkedin a {
  color: var(--color-text);
  text-decoration: none;
  font-size: 0.95rem;
  border-bottom: 1px solid var(--color-border);
  transition: border-color 0.2s, color 0.2s;
}

.contact-linkedin a:hover {
  border-color: #3d7a56;
  color: #3d7a56;
}

/* === Responsive === */

/* -- Tablet (up to 900px) -- */
@media (max-width: 900px) {
  .hero-layout {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .hero-illustration {
    order: -1;
    max-width: 360px;
    margin: 0 auto;
  }

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

  .arch-cards {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .arch-ai-grid {
    grid-template-columns: 1fr;
  }

  .arch-ai-block {
    padding: 36px 28px;
  }

  .ba-layout {
    grid-template-columns: 1fr;
    gap: 48px;
  }

  .contact-layout {
    grid-template-columns: 1fr;
    gap: 48px;
  }

  .ba-hero-layout {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .ba-hero-illustration {
    order: -1;
    max-width: 380px;
    margin: 0 auto;
  }

  .ba-hero h1 {
    font-size: 2.4rem;
  }

  /* Reduce section padding on tablet */
  .services,
  .arch-section,
  .about,
  .contact,
  .ba-competencies,
  .ba-approach,
  .ba-industries {
    padding: 80px 0;
  }

  .clients {
    padding: 48px 0;
  }

  .clients-grid {
    gap: 32px;
  }
}

/* -- Mobile (up to 640px) -- */
@media (max-width: 640px) {
  /* Container: tighter padding on small screens */
  .container {
    padding: 0 20px;
  }

  /* Navigation: switch to mobile menu */
  .nav-links {
    display: none;
  }

  .mobile-toggle {
    display: flex;
  }

  /* Hero */
  .hero {
    padding: 120px 0 64px;
  }

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

  .hero-subtitle {
    font-size: 1.05rem;
  }

  .hero-actions {
    flex-direction: column;
  }

  .hero-actions .btn {
    text-align: center;
  }

  .hero-illustration {
    max-width: 280px;
  }

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

  .services h2 {
    font-size: 1.7rem;
    margin-bottom: 36px;
  }

  .service-card {
    padding: 28px 24px;
  }

  /* Business Architecture section */
  .arch-intro h2 {
    font-size: 1.7rem;
  }

  .arch-ai-block {
    padding: 28px 20px;
  }

  .arch-ai-heading {
    font-size: 1.3rem;
  }

  /* About */
  .about h2 {
    font-size: 1.7rem;
  }

  /* Contact */
  .contact-info h2 {
    font-size: 1.7rem;
  }

  /* BA page sections */
  .ba-hero {
    padding: 120px 0 60px;
  }

  .ba-hero h1 {
    font-size: 1.8rem;
  }

  .ba-hero-illustration {
    max-width: 280px;
  }

  .ba-cards {
    grid-template-columns: 1fr;
  }

  .ba-competencies h2,
  .ba-approach h2,
  .ba-industries h2,
  .ba-teaser h2 {
    font-size: 1.7rem;
  }

  /* Clients */
  .clients-grid {
    gap: 24px;
  }

  .client-logo svg {
    height: 48px;
  }

  /* Footer */
  .footer-content {
    flex-direction: column;
    gap: 8px;
    text-align: center;
  }

  /* Reduce section padding further on mobile */
  .services,
  .arch-section,
  .about,
  .contact,
  .ba-competencies,
  .ba-approach,
  .ba-industries {
    padding: 64px 0;
  }

  .clients {
    padding: 36px 0;
  }

  /* Make buttons slightly larger for touch */
  .btn {
    padding: 16px 28px;
    font-size: 0.92rem;
  }

  .btn-nav {
    padding: 12px 20px;
  }

  /* Form inputs: larger touch targets */
  .form-group input,
  .form-group textarea {
    padding: 14px 16px;
    font-size: 1rem;
  }
}

/* -- Small phones (up to 400px) -- */
@media (max-width: 400px) {
  .container {
    padding: 0 16px;
  }

  .hero {
    padding: 110px 0 48px;
  }

  .hero h1 {
    font-size: 1.7rem;
  }

  .hero-subtitle {
    font-size: 1rem;
  }

  .ba-hero {
    padding: 110px 0 48px;
  }

  .ba-hero h1 {
    font-size: 1.5rem;
  }

  .services h2,
  .about h2,
  .contact-info h2,
  .arch-intro h2,
  .ba-competencies h2,
  .ba-approach h2,
  .ba-industries h2,
  .ba-teaser h2 {
    font-size: 1.5rem;
  }

  .arch-ai-heading {
    font-size: 1.2rem;
  }

  .service-card {
    padding: 24px 20px;
  }

  .arch-card {
    padding: 24px 20px;
  }

  .arch-ai-block {
    padding: 24px 16px;
  }

  .ai-point {
    flex-direction: column;
    gap: 12px;
  }
}