/* ===== CSS Custom Properties ===== */
:root {
  --green-900: #14532d;
  --green-800: #166534;
  --green-700: #15803d;
  --green-600: #16a34a;
  --green-500: #22c55e;
  --green-400: #4ade80;
  --green-300: #86efac;
  --green-200: #bbf7d0;
  --green-100: #dcfce7;
  --green-50: #f0fdf4;

  --white: #ffffff;
  --gray-50: #f9fafb;
  --gray-100: #f3f4f6;
  --gray-200: #e5e7eb;
  --gray-300: #d1d5db;
  --gray-500: #6b7280;
  --gray-600: #4b5563;
  --gray-700: #374151;
  --gray-800: #1f2937;
  --gray-900: #111827;

  --font-sans: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --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: 0.75rem;
  --transition: 0.3s ease;
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-sans);
  color: var(--gray-800);
  background: var(--white);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

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

ul {
  list-style: none;
}

/* ===== Utility ===== */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

.section {
  padding: 5rem 0;
}

.section--gray {
  background: var(--gray-50);
}

.section--green {
  background: linear-gradient(135deg, var(--green-800), var(--green-600));
  color: var(--white);
}

.section-label {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--green-600);
  margin-bottom: 0.75rem;
}

.section--green .section-label {
  color: var(--green-200);
}

.section-title {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 1rem;
}

.section-subtitle {
  font-size: 1.125rem;
  color: var(--gray-500);
  max-width: 640px;
  line-height: 1.7;
}

.section--green .section-subtitle {
  color: var(--green-100);
}

.text-center {
  text-align: center;
}

.mx-auto {
  margin-left: auto;
  margin-right: auto;
}

/* ===== Header / Navbar ===== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--gray-200);
  transition: box-shadow var(--transition);
}

.header.scrolled {
  box-shadow: var(--shadow-md);
}

.header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 6.5rem;
  padding-top: 0.5rem;
  padding-bottom: 0.5rem;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--green-700);
}

.logo-img {
  height: 5rem;
  width: auto;
}

.logo svg {
  width: 2.25rem;
  height: 2.25rem;
}

.logo span {
  color: var(--gray-800);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 2rem;
}

.nav-links a {
  font-size: 1.05rem;
  font-weight: 500;
  color: var(--gray-600);
  transition: color var(--transition);
  position: relative;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--green-600);
  transition: width var(--transition);
}

.nav-links a:hover {
  color: var(--green-700);
}

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

.nav-cta {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  background: var(--green-700);
  color: var(--white) !important;
  border-radius: 0.5rem;
  font-weight: 600;
  font-size: 1.05rem;
  transition: background var(--transition), transform var(--transition);
}

.nav-cta:hover {
  background: var(--green-800);
  transform: translateY(-1px);
}

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

/* Mobile menu button */
.menu-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
  color: var(--gray-700);
}

.menu-toggle svg {
  width: 1.5rem;
  height: 1.5rem;
}

/* ===== Hero ===== */
.hero {
  padding-top: 10rem;
  padding-bottom: 5rem;
  background: linear-gradient(160deg, var(--white) 0%, var(--green-50) 50%, var(--green-100) 100%);
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -100px;
  right: -200px;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(34, 197, 94, 0.08) 0%, transparent 70%);
  border-radius: 50%;
}

.hero .container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}

.hero-content {
  position: relative;
  z-index: 1;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.4rem 1rem;
  background: var(--green-100);
  color: var(--green-800);
  border-radius: 2rem;
  font-size: 0.8rem;
  font-weight: 600;
  margin-bottom: 1.5rem;
}

.hero-badge svg {
  width: 1rem;
  height: 1rem;
}

.hero-title {
  font-size: clamp(2.25rem, 5vw, 3.5rem);
  font-weight: 800;
  line-height: 1.1;
  color: var(--gray-900);
  margin-bottom: 1.5rem;
}

.hero-title .highlight {
  color: var(--green-600);
}

.hero-description {
  font-size: 1.125rem;
  color: var(--gray-600);
  line-height: 1.7;
  margin-bottom: 2.5rem;
  max-width: 520px;
}

.hero-actions {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.85rem 1.75rem;
  border-radius: 0.5rem;
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition);
  border: none;
  font-family: var(--font-sans);
}

.btn--primary {
  background: var(--green-700);
  color: var(--white);
  box-shadow: 0 4px 12px rgba(22, 163, 74, 0.3);
}

.btn--primary:hover {
  background: var(--green-800);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(22, 163, 74, 0.4);
}

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

.btn--outline:hover {
  border-color: var(--green-400);
  background: var(--green-50);
  transform: translateY(-2px);
}

.hero-visual {
  position: relative;
  display: flex;
  justify-content: center;
}

.hero-image-wrapper {
  position: relative;
  border-radius: 1.5rem;
  overflow: hidden;
  box-shadow: var(--shadow-xl);
}

.hero-image-wrapper img {
  width: 100%;
  height: 400px;
  object-fit: cover;
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
  margin-top: 3rem;
  padding-top: 2rem;
  border-top: 1px solid var(--gray-200);
}

.hero-stat-number {
  font-size: 1.75rem;
  font-weight: 800;
  color: var(--green-700);
}

.hero-stat-label {
  font-size: 0.8rem;
  color: var(--gray-500);
  margin-top: 0.25rem;
}

/* ===== Services Section ===== */
.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
  margin-top: 3rem;
}

.service-card {
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius);
  padding: 2rem;
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}

.service-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--green-500);
  transform: scaleX(0);
  transition: transform var(--transition);
}

.service-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--green-200);
}

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

.service-icon {
  width: 3rem;
  height: 3rem;
  background: var(--green-100);
  border-radius: 0.75rem;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.25rem;
  color: var(--green-700);
}

.service-icon svg {
  width: 1.5rem;
  height: 1.5rem;
}

.service-card h3 {
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 0.75rem;
  color: var(--gray-900);
}

.service-card p {
  font-size: 0.925rem;
  color: var(--gray-500);
  line-height: 1.65;
}

/* ===== Expertise Section ===== */
.expertise-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: center;
  margin-top: 3rem;
}

.expertise-image {
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

.expertise-image img {
  width: 100%;
  height: 400px;
  object-fit: cover;
}

.expertise-list {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.expertise-item {
  display: flex;
  gap: 1rem;
  align-items: flex-start;
  padding: 1.25rem;
  background: var(--white);
  border-radius: var(--radius);
  border: 1px solid var(--gray-200);
  transition: all var(--transition);
}

.expertise-item:hover {
  border-color: var(--green-300);
  box-shadow: var(--shadow-md);
}

.expertise-item-icon {
  width: 2.5rem;
  height: 2.5rem;
  min-width: 2.5rem;
  background: var(--green-100);
  border-radius: 0.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--green-700);
}

.expertise-item-icon svg {
  width: 1.25rem;
  height: 1.25rem;
}

.expertise-item h4 {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 0.25rem;
  color: var(--gray-900);
}

.expertise-item p {
  font-size: 0.875rem;
  color: var(--gray-500);
  line-height: 1.6;
}

/* ===== Integration / n8n Section ===== */
.integration-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
  margin-top: 3rem;
}

.integration-visual {
  position: relative;
}

.integration-diagram {
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: var(--radius);
  padding: 2.5rem;
  backdrop-filter: blur(8px);
}

.integration-nodes {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.integration-node-row {
  display: flex;
  justify-content: center;
  gap: 1rem;
  flex-wrap: wrap;
}

.integration-node {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.6rem 1rem;
  background: rgba(255, 255, 255, 0.15);
  border: 1px solid rgba(255, 255, 255, 0.25);
  border-radius: 0.5rem;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--white);
  transition: background var(--transition);
}

.integration-node:hover {
  background: rgba(255, 255, 255, 0.25);
}

.integration-node svg {
  width: 1.25rem;
  height: 1.25rem;
  opacity: 0.9;
}

.integration-connector {
  display: flex;
  justify-content: center;
  color: var(--green-300);
}

.integration-connector svg {
  width: 1.5rem;
  height: 1.5rem;
}

.integration-text h3 {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 1rem;
}

.integration-text p {
  font-size: 1rem;
  line-height: 1.7;
  color: var(--green-100);
  margin-bottom: 1.5rem;
}

.integration-features {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.integration-feature {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 0.925rem;
  color: var(--green-50);
}

.integration-feature svg {
  width: 1.25rem;
  height: 1.25rem;
  color: var(--green-300);
  min-width: 1.25rem;
}

/* ===== Why Choose Us ===== */
.why-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2rem;
  margin-top: 3rem;
}

.why-card {
  display: flex;
  gap: 1.25rem;
  padding: 2rem;
  background: var(--white);
  border-radius: var(--radius);
  border: 1px solid var(--gray-200);
  transition: all var(--transition);
}

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

.why-icon {
  width: 3.5rem;
  height: 3.5rem;
  min-width: 3.5rem;
  background: var(--green-100);
  border-radius: 0.75rem;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--green-700);
}

.why-icon svg {
  width: 1.5rem;
  height: 1.5rem;
}

.why-card h3 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
  color: var(--gray-900);
}

.why-card p {
  font-size: 0.9rem;
  color: var(--gray-500);
  line-height: 1.65;
}

/* ===== Contact Section ===== */
.contact-wrapper {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  margin-top: 3rem;
}

.contact-info {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.contact-info-text {
  font-size: 1.05rem;
  color: var(--gray-600);
  line-height: 1.7;
}

.contact-detail {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.contact-detail-icon {
  width: 2.75rem;
  height: 2.75rem;
  background: var(--green-100);
  border-radius: 0.75rem;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--green-700);
}

.contact-detail-icon svg {
  width: 1.25rem;
  height: 1.25rem;
}

.contact-detail-text {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--gray-700);
}

.contact-detail-label {
  font-size: 0.8rem;
  color: var(--gray-500);
}

.contact-form {
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius);
  padding: 2.5rem;
  box-shadow: var(--shadow-md);
}

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

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

.form-group label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--gray-700);
  margin-bottom: 0.4rem;
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 0.75rem 1rem;
  border: 1.5px solid var(--gray-200);
  border-radius: 0.5rem;
  font-family: var(--font-sans);
  font-size: 0.925rem;
  color: var(--gray-800);
  transition: border-color var(--transition), box-shadow var(--transition);
  background: var(--white);
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--green-500);
  box-shadow: 0 0 0 3px rgba(34, 197, 94, 0.15);
}

.form-group textarea {
  min-height: 120px;
  resize: vertical;
}

.form-submit {
  width: 100%;
  padding: 0.9rem;
  background: var(--green-700);
  color: var(--white);
  border: none;
  border-radius: 0.5rem;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  font-family: var(--font-sans);
  transition: background var(--transition), transform var(--transition);
}

.form-submit:hover {
  background: var(--green-800);
  transform: translateY(-1px);
}

/* ===== Footer ===== */
.footer {
  background: var(--green-900);
  color: var(--green-200);
  padding: 3rem 0 1.5rem;
}

.footer-content {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 2rem;
  margin-bottom: 2rem;
}

.footer-brand {
  max-width: 320px;
}

.footer-logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--white);
  margin-bottom: 0.75rem;
}

.footer-logo-img {
  height: 3rem;
  width: auto;
  background: var(--white);
  border-radius: 0.5rem;
  padding: 0.25rem;
}

.footer-logo svg {
  width: 2rem;
  height: 2rem;
  color: var(--green-400);
}

.footer-brand p {
  font-size: 0.875rem;
  line-height: 1.6;
  color: var(--green-200);
}

.footer-links h4 {
  color: var(--white);
  font-size: 0.9rem;
  font-weight: 700;
  margin-bottom: 1rem;
}

.footer-links a {
  display: block;
  font-size: 0.85rem;
  color: var(--green-200);
  margin-bottom: 0.5rem;
  transition: color var(--transition);
}

.footer-links a:hover {
  color: var(--green-400);
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.15);
  padding-top: 1.5rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.8rem;
  color: var(--green-300);
}

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .hero .container {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }

  .hero-visual {
    order: -1;
  }

  .hero-image-wrapper img {
    height: 300px;
  }

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

  .expertise-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .integration-content {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }

  .integration-visual {
    order: -1;
  }
}

@media (max-width: 768px) {
  .section {
    padding: 3.5rem 0;
  }

  /* Mobile nav */
  .nav-links {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--white);
    flex-direction: column;
    padding: 1.5rem;
    gap: 1rem;
    border-bottom: 1px solid var(--gray-200);
    box-shadow: var(--shadow-lg);
  }

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

  .menu-toggle {
    display: block;
  }

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

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

  .contact-wrapper {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .form-row {
    grid-template-columns: 1fr;
  }

  .hero-stats {
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
  }

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

  .footer-content {
    flex-direction: column;
  }

  .footer-bottom {
    flex-direction: column;
    gap: 0.75rem;
    text-align: center;
  }
}

@media (max-width: 480px) {
  .hero {
    padding-top: 6rem;
    padding-bottom: 3rem;
  }

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

  .btn {
    justify-content: center;
  }

  .hero-stats {
    grid-template-columns: 1fr;
    gap: 0.75rem;
    text-align: center;
  }

  .integration-node-row {
    flex-direction: column;
    align-items: center;
  }
}