:root {
  --primary-color: #2c3e50;
  --accent-color: #f39c12;
  --accent-color-hover: #e67e22;
  --text-color: #333;
  --text-light: #fff;
  --section-bg-alt: #f7f7f7;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: 'Roboto', sans-serif;
  color: var(--text-color);
  background: #fff;
  line-height: 1.6;
}

header {
  background: var(--primary-color);
  color: var(--text-light);
  padding: 10px 0;
  position: fixed;
  top: 0;
  width: 100%;
  z-index: 1000;
  box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

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

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

.logo { max-height: 50px; }

nav { position: relative; }

nav ul {
  list-style: none;
  display: flex;
  align-items: center;
  gap: 20px;
}

nav a {
  color: var(--text-light);
  text-decoration: none;
  font-family: 'Montserrat', sans-serif;
  font-weight: 600;
  text-transform: uppercase;
  font-size: 0.9em;
}

nav a:hover { text-decoration: underline; }

.nav-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--text-light);
  font-size: 1.5rem;
  cursor: pointer;
}

@media (max-width: 768px) {
  .nav-links {
    display: none;
    flex-direction: column;
    background-color: var(--primary-color);
    position: absolute;
    top: 100%;
    right: 0;
    width: 200px;
    padding: 10px 0;
    z-index: 1001;
    text-align: left;
  }

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

  .nav-links li {
    padding: 12px 20px;
    border-top: 1px solid rgba(255, 255, 255, 0.2);
  }

  .nav-links a { display: block; }

  .nav-toggle { display: block; }
}

/* Hero */
.hero {
  position: relative;
  width: 100%;
  min-height: 80vh;
  color: var(--text-light);
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  overflow: hidden;
}
.hero::before {
  content: "";
  position: absolute;
  top: 0; left: 0;
  width: 100%; height: 100%;
  background: rgba(0,0,0,0.4);
  z-index: 1;
}
.hero-slide {
  position: absolute;
  top: 0; left: 0;
  width: 100%; height: 100%;
  background-size: cover;
  background-position: center;
  opacity: 0;
  transition: opacity 1.5s ease-in-out;
  z-index: 0;
}
.hero-slide.active { opacity: 1; }
.hero-content {
  position: relative; z-index: 2;
  max-width: 800px; padding: 20px;
}
.hero-content h1 {
  font-family: 'Montserrat', sans-serif;
  font-weight: 700;
  font-size: 3em;
  margin-bottom: 0.2em;
}
.hero-content p {
  font-size: 1.2em;
  margin-bottom: 0.5em;
}
.btn {
  display: inline-block;
  padding: 12px 24px;
  background: var(--accent-color);
  color: #fff;
  text-decoration: none;
  font-weight: 600;
  font-family: 'Montserrat', sans-serif;
  border: none;
  border-radius: 4px;
  cursor: pointer;
  transition: background 0.3s ease;
}
.btn:hover { background: var(--accent-color-hover); }

/* Sections */
main { margin-top: 70px; }
section { padding: 60px 0; scroll-margin-top: 80px; }
section h2 {
  font-family: 'Montserrat', sans-serif;
  font-weight: 700;
  font-size: 2em;
  color: var(--primary-color);
  text-align: center;
  margin-bottom: 0.5em;
}
section p { margin-bottom: 1em; }

/* Services */
#services { background: var(--section-bg-alt); }
.services-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 20px;
  margin-top: 30px;
}
.service-item {
  background: #fff;
  padding: 20px;
  border-radius: 4px;
  box-shadow: 0 1px 3px rgba(0,0,0,0.1);
  text-align: center;
}
.service-item h3 {
  font-family: 'Montserrat', sans-serif;
  font-weight: 600;
  font-size: 1.3em;
  color: var(--primary-color);
  margin: 0.5em 0;
}
.service-item p { font-size: 0.95em; }
.service-item a {
  display: inline-block;
  margin-top: 10px;
  padding: 10px 20px;
  font-family: 'Montserrat', sans-serif;
  font-weight: 600;
  font-size: 0.9rem;
  text-decoration: none;
  text-transform: uppercase;
  color: #fff;
  background-color: var(--accent-color);
  border-radius: 4px;
  transition: background-color 0.3s ease, transform 0.2s ease;
}
.service-item a:hover {
  background-color: var(--accent-color-hover);
  transform: translateY(-2px);
}

/* Process */
.process-steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 20px;
  margin-top: 30px;
}
.process-step {
  text-align: center;
  padding: 10px 15px;
}
.process-step .step-number {
  font-size: 1.5em;
  font-weight: 700;
  background: var(--accent-color);
  color: #fff;
  width: 50px; height: 50px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  margin-bottom: 10px;
}
.process-step h3 {
  font-family: 'Montserrat', sans-serif;
  font-weight: 600;
  font-size: 1.2em;
  color: var(--primary-color);
  margin-bottom: 0.3em;
}
.process-step p { font-size: 0.95em; }

/* Industries */
#industries { background: #f0f0f0; }
.industries-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 25px;
  margin-top: 30px;
}
.industry-item {
  background: #fff;
  border-left: 4px solid var(--accent-color);
  padding: 20px;
  border-radius: 4px;
  box-shadow: 0 1px 4px rgba(0,0,0,0.05);
}
.industry-item h3 {
  font-family: 'Montserrat', sans-serif;
  font-weight: 600;
  margin-bottom: 10px;
  color: var(--primary-color);
}
.industry-item p { font-size: 0.95rem; color: #444; }

/* Testimonials */
.testimonials-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 20px;
  margin-top: 30px;
}
.testimonials-list blockquote {
  background: #fff;
  border-left: 4px solid var(--accent-color);
  position: relative;
  padding: 20px;
  font-style: italic;
}
.testimonials-list blockquote p {
  position: relative;
  padding-left: 50px;
  margin-bottom: 0.5em;
}
.testimonials-list blockquote::before {
  content: "“";
  font-family: serif;
  font-size: 3em;
  color: var(--accent-color);
  position: absolute;
  top: 10px;
  left: 10px;
}
.testimonials-list blockquote::after {
  content: "”";
  font-family: serif;
  font-size: 3em;
  color: var(--accent-color);
  position: absolute;
  bottom: 10px;
  right: 10px;
}
.testimonials-list cite {
  display: block;
  text-align: right;
  font-style: normal;
  color: #555;
}

/* Contact */
#contact .container {
  display: flex;
  flex-wrap: wrap;
  gap: 40px;
  align-items: flex-start;
}
.contact-info {
  flex: 1 1 40%;
  font-size: 1em;
  line-height: 1.5;
}
.contact-info p { margin-bottom: 1em; }
.contact-info a {
  color: var(--primary-color);
  text-decoration: none;
}
.contact-info a:hover { text-decoration: underline; }

.contact-form {
  flex: 1 1 55%;
}
.contact-form .form-group { margin-bottom: 1em; }
.contact-form label {
  display: block;
  margin-bottom: 0.3em;
  font-weight: 500;
}
.contact-form input,
.contact-form textarea {
  width: 100%;
  padding: 10px;
  border: 1px solid #ccc;
  border-radius: 4px;
  font-family: inherit;
  font-size: 1em;
}
.contact-form textarea {
  height: 150px;
  resize: vertical;
}
.contact-form button { margin-top: 5px; }

@media (max-width: 600px) {
  #contact .container { flex-direction: column; }
  .hero-content h1 { font-size: 2em; }
  .hero-content p { font-size: 1em; }
}

@media (max-width: 768px) {
  /* stack contact info + form full width */
  #contact .container {
    flex-direction: column;
    gap: 20px;
  }
  .contact-form,
  .contact-info {
    flex: none;
    width: 100%;
  }
  .contact-form input,
  .contact-form textarea {
    width: 100%;
    min-width: 0;
  }
}

/* Footer */
footer {
  background: var(--primary-color);
  color: #ccc;
  padding: 20px 0;
}
footer .container {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: flex-start;
  gap: 20px;
}
footer .footer-col {
  flex: 1 1 300px;
}
footer .footer-col h4 {
  font-family: 'Montserrat', sans-serif;
  font-weight: 600;
  font-size: 1.2em;
  color: var(--text-light);
  margin-bottom: 0.5em;
}
footer .footer-col p,
footer .footer-col a {
  font-size: 0.9em;
  color: #ccc;
  text-decoration: none;
}
footer .footer-col a:hover { text-decoration: underline; }
footer .logo {
  max-height: 40px;
  margin-bottom: 10px;
}
footer .copyright {
  text-align: center;
  margin-top: 10px;
  font-size: 0.8em;
  color: #aaa;
}