/* CSS Variables */
:root {
  /* Colors */
  --primary: #009688;
  --primary-dark: #00796b;
  --primary-light: #b2dfdb;
  --secondary: #ff5722;
  --accent: #ffc107;
  --dark: #263238;
  --light: #eceff1;
  --white: #ffffff;
  --gray: #90a4ae;
  --gray-light: #cfd8dc;

  /* Typography */
  --font-primary: "Poppins", sans-serif;
  --font-secondary: "Montserrat", sans-serif;

  /* Spacing */
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 1.5rem;
  --space-lg: 2rem;
  --space-xl: 3rem;

  /* Border radius */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 16px;
  --radius-round: 50%;

  /* Shadows */
  --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.1);
  --shadow-md: 0 4px 8px rgba(0, 0, 0, 0.15);
  --shadow-lg: 0 8px 16px rgba(0, 0, 0, 0.2);

  /* Transitions */
  --transition-fast: 0.2s ease;
  --transition-normal: 0.3s ease;
  --transition-slow: 0.5s ease;
}

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

html {
  scroll-behavior: smooth;
}

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

h1,
h2,
h3,
h4 {
  font-family: var(--font-secondary);
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: var(--space-md);
}

p {
  margin-bottom: var(--space-md);
}

a {
  color: var(--primary);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--primary-dark);
}

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

ul {
  list-style: none;
}

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-md);
}

/* Accessibility */
.skip-link {
  position: absolute;
  top: -40px;
  left: 0;
  background: var(--primary);
  color: var(--white);
  padding: var(--space-xs) var(--space-sm);
  z-index: 100;
  transition: top var(--transition-normal);
}

.skip-link:focus {
  top: 0;
}

/* Buttons */
.btn {
  display: inline-block;
  padding: var(--space-sm) var(--space-lg);
  border-radius: var(--radius-sm);
  font-weight: 600;
  text-align: center;
  transition: all var(--transition-normal);
  border: 2px solid transparent;
}

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

.btn--primary:hover {
  background-color: var(--primary-dark);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

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

.btn--secondary:hover {
  background-color: #e64a19;
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

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

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

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

.btn--white:hover {
  background-color: var(--light);
  color: var(--primary-dark);
}

/* Header & Navigation */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background-color: rgba(255, 255, 255, 0.75);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-normal);
}

.header.scrolled {
  background-color: rgba(255, 255, 255, 0.75);
  box-shadow: var(--shadow-md);
}

.header__inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-sm) 0;
}

.logo img {
  height: 50px;
  width: auto;
}

.nav-toggle {
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--space-xs);
  display: none;
  z-index: 1001;
}

.hamburger {
  display: block;
  width: 24px;
  height: 2px;
  background-color: var(--dark);
  position: relative;
  transition: all var(--transition-normal);
}

.hamburger::before,
.hamburger::after {
  content: "";
  position: absolute;
  width: 24px;
  height: 2px;
  background-color: var(--dark);
  transition: all var(--transition-normal);
}

.hamburger::before {
  top: -8px;
}

.hamburger::after {
  top: 8px;
}

.nav-toggle[aria-expanded="true"] .hamburger {
  background-color: transparent;
}

.nav-toggle[aria-expanded="true"] .hamburger::before {
  transform: rotate(45deg);
  top: 0;
}

.nav-toggle[aria-expanded="true"] .hamburger::after {
  transform: rotate(-45deg);
  top: 0;
}

.nav__list {
  display: flex;
  gap: var(--space-md);
}

.nav__link {
  font-weight: 500;
  padding: var(--space-xs) 0;
  position: relative;
}

.nav__link::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--primary);
  transition: width var(--transition-normal);
}

.nav__link:hover::after,
.nav__link.active::after {
  width: 100%;
}

.nav__item--highlight .nav__link {
  background-color: var(--primary);
  color: var(--white);
  padding: var(--space-xs) var(--space-sm);
  border-radius: var(--radius-sm);
}

.nav__item--highlight .nav__link:hover {
  background-color: var(--primary-dark);
}

/* Hero Section */
.hero {
  position: relative;
  height: 100vh;
  min-height: 600px;
  display: flex;
  align-items: center;
  overflow: hidden;
}

.hero__background {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 1;
}

.hero__background img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.hero__overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.5);
  z-index: 2;
}

.hero__content {
  position: relative;
  z-index: 3;
  color: var(--white);
  padding: var(--space-xl) 0;
  width: 100%;
}

.hero__title {
  font-size: 3rem;
  line-height: 1.2;
  margin-bottom: var(--space-md);
  text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

.hero__title span {
  color: var(--primary);
}

.hero__text {
  font-size: 1.25rem;
  max-width: 600px;
  margin-bottom: var(--space-lg);
  text-shadow: 0 1px 2px rgba(0, 0, 0, 0.3);
}

.hero__cta {
  display: flex;
  gap: var(--space-md);
}

.hero__scroll-down {
  position: absolute;
  bottom: var(--space-lg);
  left: 50%;
  transform: translateX(-50%);
  z-index: 3;
  color: var(--white);
  font-size: 1.5rem;
  animation: bounce 2s infinite;
}

@keyframes bounce {
  0%,
  20%,
  50%,
  80%,
  100% {
    transform: translateY(0) translateX(-50%);
  }
  40% {
    transform: translateY(-20px) translateX(-50%);
  }
  60% {
    transform: translateY(-10px) translateX(-50%);
  }
}

/* Responsive Hero */
@media (max-width: 992px) {
  .hero__title {
    font-size: 2.5rem;
  }
}

@media (max-width: 768px) {
  .hero__title {
    font-size: 2rem;
  }

  .hero__text {
    font-size: 1.1rem;
  }

  .hero__cta {
    flex-direction: column;
  }
}

@media (max-width: 576px) {
  .hero__title {
    font-size: 1.8rem;
  }

  .hero {
    min-height: 500px;
  }
}

.stats__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: var(--space-md);
  text-align: center;
}

.stat {
  padding: var(--space-sm);
}

.stat__number {
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--primary);
  display: block;
}

.stat__label {
  font-size: 0.9rem;
  color: var(--gray);
}

/* Section Styles */
.section {
  padding: var(--space-xl) 0;
}

.section__header {
  text-align: center;
  margin-bottom: var(--space-xl);
}

.section__subtitle {
  display: block;
  color: var(--primary);
  font-weight: 600;
  margin-bottom: var(--space-xs);
  text-transform: uppercase;
  letter-spacing: 1px;
  font-size: 0.9rem;
}

.section__title {
  font-size: 2rem;
  position: relative;
  display: inline-block;
}

.section__title::after {
  content: "";
  display: block;
  width: 50px;
  height: 4px;
  background-color: var(--primary);
  margin: var(--space-sm) auto;
}

.section__divider {
  width: 100px;
  height: 2px;
  background-color: var(--gray-light);
  margin: 0 auto var(--space-md);
}

.section__description {
  max-width: 700px;
  margin: 0 auto;
  color: var(--gray);
}

/* About Section */
.about__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-xl);
  align-items: center;
}

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

.about__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.mission-vision {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-md);
  margin: var(--space-lg) 0;
}

.mv-card {
  background-color: var(--light);
  padding: var(--space-md);
  border-radius: var(--radius-md);
  text-align: center;
}

.mv-card i {
  font-size: 2rem;
  color: var(--primary);
  margin-bottom: var(--space-sm);
}

.mv-card h4 {
  margin-bottom: var(--space-xs);
}

.values h4 {
  margin-bottom: var(--space-sm);
}

.values__list {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-sm);
}

.values__list li {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
}

.values__list i {
  color: var(--primary);
}

/* Services Section */
.services {
  background-color: var(--light);
}

.services__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--space-md);
  margin-bottom: var(--space-xl);
}

.service-card {
  background-color: var(--white);
  border-radius: var(--radius-md);
  padding: var(--space-lg);
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-normal),
    box-shadow var(--transition-normal);
}

.service-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
}

.service-card__icon {
  width: 60px;
  height: 60px;
  background-color: var(--primary-light);
  border-radius: var(--radius-round);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-md);
}

.service-card__icon i {
  font-size: 1.5rem;
  color: var(--primary);
}

.service-card__title {
  font-size: 1.2rem;
  margin-bottom: var(--space-sm);
}

.service-card__description {
  color: var(--gray);
  margin-bottom: var(--space-md);
}

.service-card__link {
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
}

.services__cta {
  display: flex;
  justify-content: center;
  gap: var(--space-md);
}

/* Clients Section */
.clients {
  background-color: var(--white);
}

.clients__slider {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: center;
  gap: var(--space-xl);
  padding: var(--space-md) 0;
}

.client-logo {
  max-width: 150px;
  filter: grayscale(100%);
  opacity: 0.7;
  transition: all var(--transition-normal);
}

.client-logo:hover {
  filter: grayscale(0%);
  opacity: 1;
}

.client-logo img {
  width: 100%;
  height: auto;
}

/* CTA Section */
.cta {
  background: linear-gradient(rgba(0, 0, 0, 0.7), rgba(0, 0, 0, 0.7)),
    url("../images/cta-bg.jpg") no-repeat center center;
  background-size: cover;
  color: var(--white);
  text-align: center;
  padding: var(--space-xl) 0;
}

.cta__content {
  max-width: 800px;
  margin: 0 auto;
}

.cta h2 {
  font-size: 2rem;
  margin-bottom: var(--space-md);
}

.cta p {
  font-size: 1.2rem;
  margin-bottom: var(--space-lg);
}

/* Contact Section */
.contact__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-xl);
}

.contact__info {
  background-color: var(--primary);
  color: var(--white);
  padding: var(--space-lg);
  border-radius: var(--radius-md);
}

.contact__info h3 {
  font-size: 1.5rem;
  margin-bottom: var(--space-md);
}

.contact__info p {
  margin-bottom: var(--space-lg);
}

.info-item {
  display: flex;
  gap: var(--space-md);
  margin-bottom: var(--space-lg);
}

.info-item i {
  font-size: 1.2rem;
  color: var(--accent);
}

.info-item h4 {
  font-size: 1rem;
  margin-bottom: var(--space-xs);
}

.contact__social {
  display: flex;
  gap: var(--space-md);
  margin-top: var(--space-xl);
}

.contact__social a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background-color: rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-round);
  color: var(--white);
  transition: all var(--transition-normal);
}

.contact__social a:hover {
  background-color: var(--accent);
  color: var(--dark);
  transform: translateY(-3px);
}

.contact__form {
  background-color: var(--white);
  padding: var(--space-lg);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
}

.form-group {
  position: relative;
  margin-bottom: var(--space-md);
}

.form-group--full {
  grid-column: 1 / -1;
}

.form-group label {
  position: absolute;
  top: 1rem;
  left: 1rem;
  color: var(--gray);
  pointer-events: none;
  transition: all var(--transition-normal);
}

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 1rem;
  border: 1px solid var(--gray-light);
  border-radius: var(--radius-sm);
  font-family: var(--font-primary);
  transition: all var(--transition-normal);
}

.form-group select {
  appearance: none;
  background-image: url("data:image/svg+xml;charset=UTF-8,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='currentColor' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3e%3cpolyline points='6 9 12 15 18 9'%3e%3c/polyline%3e%3c/svg%3e");
  background-repeat: no-repeat;
  background-position: right 1rem center;
  background-size: 1rem;
}

.form-group textarea {
  min-height: 150px;
  resize: vertical;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 2px var(--primary-light);
}

.form-group input:focus + label,
.form-group input:not(:placeholder-shown) + label,
.form-group textarea:focus + label,
.form-group textarea:not(:placeholder-shown) + label {
  top: -0.5rem;
  left: 0.8rem;
  font-size: 0.8rem;
  background-color: var(--white);
  padding: 0 0.2rem;
  color: var(--primary);
}

/* Footer */
.footer {
  background-color: var(--dark);
  color: var(--white);
  padding: var(--space-xl) 0 0;
}

.footer__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--space-xl);
  margin-bottom: var(--space-xl);
}

.footer__col h3 {
  color: var(--white);
  font-size: 1.2rem;
  margin-bottom: var(--space-md);
  position: relative;
  padding-bottom: var(--space-xs);
}

.footer__col h3::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 40px;
  height: 2px;
  background-color: var(--primary);
}

.footer__logo {
  height: 50px;
  margin-bottom: var(--space-md);
}

.footer ul li {
  margin-bottom: var(--space-xs);
}

.footer a {
  color: var(--gray-light);
  transition: color var(--transition-fast);
}

.footer a:hover {
  color: var(--primary-light);
}

.footer__bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding: var(--space-md) 0;
}

.footer__legal {
  text-align: center;
  margin-bottom: var(--space-sm);
}

.footer__legal p {
  margin-bottom: 0;
  font-size: 0.9rem;
  color: var(--gray);
}

.footer__legal a {
  color: var(--gray-light);
}

.footer__credits {
  text-align: center;
  font-size: 0.9rem;
  color: var(--gray);
}

/* Back to Top */
.back-to-top {
  position: fixed;
  bottom: var(--space-md);
  right: var(--space-md);
  width: 50px;
  height: 50px;
  background-color: var(--primary);
  color: var(--white);
  border-radius: var(--radius-round);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-normal);
  z-index: 999;
}

.back-to-top.visible {
  opacity: 1;
  visibility: visible;
}

.back-to-top:hover {
  background-color: var(--primary-dark);
  transform: translateY(-3px);
}

/* Responsive Styles */
@media (max-width: 992px) {
  .hero__title {
    font-size: 2rem;
  }

  .hero__cta {
    flex-direction: column;
    align-items: flex-start;
  }

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

  .about__image {
    order: -1;
  }
}

@media (max-width: 768px) {
  .nav-toggle {
    display: block;
  }

  .nav {
    position: fixed;
    top: 0;
    right: -100%;
    width: 80%;
    max-width: 300px;
    height: 100vh;
    background-color: var(--white);
    padding: var(--space-xl) var(--space-md);
    transition: right var(--transition-normal);
    z-index: 1000;
  }

  .nav[data-visible="true"] {
    right: 0;
  }

  .nav__list {
    flex-direction: column;
    gap: var(--space-md);
  }

  .hero__content {
    padding: var(--space-lg) 0;
  }

  .hero__title {
    font-size: 1.8rem;
  }

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

  .mission-vision {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 576px) {
  .hero__title {
    font-size: 1.5rem;
  }

  .hero__text {
    font-size: 1rem;
  }

  .section__title {
    font-size: 1.5rem;
  }

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

  .services__cta {
    flex-direction: column;
  }

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

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

/* Animations */
@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

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

.fade-in {
  animation: fadeIn 1s ease forwards;
}

.slide-up {
  animation: slideUp 0.8s ease forwards;
}