/* CSS Reset & Root Variables */
:root {
  /* Colors */
  --primary-color: #0E7A2E;
  --primary-light: #1B8F3A;
  --primary-dark: #0A5A22;
  --accent-color: #F4D03F;
  --bg-color: #FFFFFF;
  --bg-light: #F8F9FA;
  --text-color: #2C3E50;
  --text-light: #6C757D;
  --border-color: #E9ECEF;
  --shadow-light: rgba(14, 122, 46, 0.1);
  --shadow-medium: rgba(14, 122, 46, 0.15);
  --shadow-heavy: rgba(14, 122, 46, 0.25);

  /* Typography */
  --font-primary: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
  --font-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;

  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;
  --spacing-xxl: 4rem;

  /* Layout */
  --container-max-width: 1200px;
  --header-height: 70px;
  --border-radius: 8px;
  --border-radius-lg: 12px;

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

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

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

body {
  font-family: var(--font-primary);
  line-height: 1.6;
  color: var(--text-color);
  background-color: var(--bg-color);
  font-weight: var(--font-weight-normal);
}

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

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

button {
  border: none;
  background: none;
  cursor: pointer;
  font-family: inherit;
}

ul {
  list-style: none;
}

/* Container */
.container {
  max-width: var(--container-max-width);
  margin: 0 auto;
  padding: 0 var(--spacing-sm);
}

@media (min-width: 768px) {
  .container {
    padding: 0 var(--spacing-lg);
  }
}

/* Typography */
.section__title {
  font-size: 2rem;
  font-weight: var(--font-weight-semibold);
  color: var(--text-color);
  text-align: center;
  margin-bottom: var(--spacing-xl);
  position: relative;
}

.section__title::after {
  content: '';
  position: absolute;
  bottom: -10px;
  left: 50%;
  transform: translateX(-50%);
  width: 60px;
  height: 3px;
  background: linear-gradient(90deg, var(--primary-color), var(--primary-light));
  border-radius: 2px;
}

@media (min-width: 768px) {
  .section__title {
    font-size: 2.5rem;
  }
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-sm) var(--spacing-lg);
  border-radius: var(--border-radius);
  font-weight: var(--font-weight-medium);
  transition: all var(--transition-fast);
  cursor: pointer;
  text-decoration: none;
  border: 2px solid transparent;
  font-size: 1rem;
  min-height: 44px;
}

.btn--primary {
  background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
  color: white;
  box-shadow: 0 4px 12px var(--shadow-light);
}

.btn--primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px var(--shadow-medium);
}

.btn--primary:active {
  transform: translateY(0);
}

/* Sections */
.section {
  padding: var(--spacing-xxl) 0;
  position: relative;
}

.section:nth-child(even) {
  background-color: var(--bg-light);
}

/* Header */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border-color);
  z-index: 1000;
  height: var(--header-height);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--header-height);
}

.nav__brand {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
}

.nav__logo-icon {
  width: 32px;
  height: 32px;
}

.nav__brand-text {
  font-size: 1.5rem;
  font-weight: var(--font-weight-semibold);
  color: var(--primary-color);
}

.nav__menu {
  display: none;
}

.nav__list {
  display: flex;
  gap: var(--spacing-lg);
}

.nav__link {
  color: var(--text-color);
  font-weight: var(--font-weight-medium);
  transition: color var(--transition-fast);
  padding: var(--spacing-xs) 0;
  position: relative;
}

.nav__link:hover {
  color: var(--primary-color);
}

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

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

.nav__toggle {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: var(--spacing-xs);
}

.nav__toggle-line {
  width: 24px;
  height: 2px;
  background: var(--text-color);
  transition: all var(--transition-fast);
  border-radius: 1px;
}

.nav__toggle.active .nav__toggle-line:nth-child(1) {
  transform: rotate(45deg) translate(6px, 6px);
}

.nav__toggle.active .nav__toggle-line:nth-child(2) {
  opacity: 0;
}

.nav__toggle.active .nav__toggle-line:nth-child(3) {
  transform: rotate(-45deg) translate(6px, -6px);
}

@media (min-width: 768px) {
  .nav__menu {
    display: block;
  }

  .nav__toggle {
    display: none;
  }
}

/* Mobile Menu */
.nav__menu.show {
  display: block;
  position: absolute;
  top: 100%;
  left: 0;
  width: 100%;
  background: white;
  border-top: 1px solid var(--border-color);
  box-shadow: 0 4px 12px var(--shadow-light);
  animation: slideDown var(--transition-medium);
}

.nav__menu.show .nav__list {
  flex-direction: column;
  padding: var(--spacing-sm);
  gap: 0;
}

.nav__menu.show .nav__link {
  display: block;
  padding: var(--spacing-sm);
  border-bottom: 1px solid var(--border-color);
}

.nav__menu.show .nav__link:last-child {
  border-bottom: none;
}

@keyframes slideDown {
  from {
    opacity: 0;
    transform: translateY(-10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Main */
.main {
  margin-top: var(--header-height);
}

/* Hero Section */
.hero {
  background: linear-gradient(135deg, #f8fffe 0%, #f0f9f6 100%);
  padding: var(--spacing-xxl) 0;
  position: relative;
  overflow: hidden;
  min-height: 500px;
}

.hero__container {
  display: grid;
  gap: var(--spacing-xl);
  align-items: center;
}

.hero__content {
  text-align: center;
}

.hero__title {
  font-size: 2.25rem;
  font-weight: var(--font-weight-bold);
  color: var(--text-color);
  margin-bottom: var(--spacing-md);
  line-height: 1.2;
}

.hero__description {
  font-size: 1.1rem;
  color: var(--text-light);
  margin-bottom: var(--spacing-xl);
  max-width: 500px;
  margin-left: auto;
  margin-right: auto;
}

.hero__cta {
  font-size: 1.1rem;
  padding: var(--spacing-md) var(--spacing-xl);
}

.hero__image {
  text-align: center;
}

.hero__image img {
  border-radius: var(--border-radius-lg);
  box-shadow: 0 8px 24px var(--shadow-medium);
  width: 100%;
  max-width: 500px;
  margin: 0 auto;
}

.hero__decoration {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 100px;
  pointer-events: none;
}

@media (min-width: 768px) {
  .hero__container {
    grid-template-columns: 1fr 1fr;
    text-align: left;
  }

  .hero__content {
    text-align: left;
  }

  .hero__title {
    font-size: 3rem;
  }

  .hero__description {
    margin-left: 0;
    margin-right: 0;
  }
}

/* Services Section */
.services__grid {
  display: grid;
  gap: var(--spacing-lg);
  grid-template-columns: 1fr;
}

.service-card {
  background: white;
  padding: var(--spacing-xl);
  border-radius: var(--border-radius-lg);
  box-shadow: 0 4px 12px var(--shadow-light);
  transition: all var(--transition-medium);
  text-align: center;
  border: 1px solid var(--border-color);
}

.service-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 8px 24px var(--shadow-medium);
}

.service-card__icon {
  display: flex;
  justify-content: center;
  margin-bottom: var(--spacing-md);
}

.service-card__icon svg {
  width: 48px;
  height: 48px;
}

.service-card__title {
  font-size: 1.25rem;
  font-weight: var(--font-weight-semibold);
  color: var(--text-color);
  margin-bottom: var(--spacing-sm);
}

.service-card__description {
  color: var(--text-light);
  line-height: 1.6;
}

@media (min-width: 768px) {
  .services__grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .services__grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* Projects Section */
.projects__grid {
  display: grid;
  gap: var(--spacing-lg);
  grid-template-columns: 1fr;
}

.project-card {
  position: relative;
  border-radius: var(--border-radius-lg);
  overflow: hidden;
  cursor: pointer;
  transition: transform var(--transition-medium);
  box-shadow: 0 4px 12px var(--shadow-light);
}

.project-card:hover {
  transform: scale(1.02);
}

.project-card img {
  width: 100%;
  height: 250px;
  object-fit: cover;
  transition: filter var(--transition-medium);
}

.project-card:hover img {
  filter: brightness(0.8);
}

.project-card__overlay {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  background: linear-gradient(transparent, rgba(0, 0, 0, 0.8));
  color: white;
  padding: var(--spacing-lg);
  transform: translateY(10px);
  transition: transform var(--transition-medium);
}

.project-card:hover .project-card__overlay {
  transform: translateY(0);
}

.project-card__title {
  font-size: 1.25rem;
  font-weight: var(--font-weight-semibold);
  margin-bottom: var(--spacing-xs);
}

.project-card__tag {
  font-size: 0.9rem;
  background: var(--primary-color);
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--border-radius);
  display: inline-block;
}

@media (min-width: 768px) {
  .projects__grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .projects__grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* Process Section */
.process__timeline {
  display: grid;
  gap: var(--spacing-xl);
  position: relative;
}

.process__step {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-md);
  position: relative;
}

.process__step::after {
  content: '';
  position: absolute;
  left: 16px;
  top: 40px;
  width: 2px;
  height: calc(100% + var(--spacing-xl));
  background: var(--border-color);
}

.process__step:last-child::after {
  display: none;
}

.process__step-icon {
  background: white;
  border: 2px solid var(--primary-color);
  border-radius: 50%;
  padding: var(--spacing-xs);
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
}

.process__step-content {
  flex: 1;
  padding-top: var(--spacing-xs);
}

.process__step-title {
  font-size: 1.25rem;
  font-weight: var(--font-weight-semibold);
  color: var(--text-color);
  margin-bottom: var(--spacing-xs);
}

.process__step-description {
  color: var(--text-light);
}

@media (min-width: 768px) {
  .process__timeline {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-lg);
  }

  .process__step::after {
    display: none;
  }
}

@media (min-width: 1024px) {
  .process__timeline {
    grid-template-columns: repeat(4, 1fr);
  }

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

  .process__step-icon {
    margin: 0 auto var(--spacing-md);
  }
}

/* Features Section */
.features__grid {
  display: grid;
  gap: var(--spacing-lg);
  grid-template-columns: 1fr;
  margin-bottom: var(--spacing-xxl);
}

.feature-card {
  background: white;
  padding: var(--spacing-xl);
  border-radius: var(--border-radius-lg);
  box-shadow: 0 4px 12px var(--shadow-light);
  text-align: center;
  transition: transform var(--transition-medium);
}

.feature-card:hover {
  transform: translateY(-4px);
}

.feature-card__icon {
  display: flex;
  justify-content: center;
  margin-bottom: var(--spacing-md);
}

.feature-card__title {
  font-size: 1.1rem;
  font-weight: var(--font-weight-semibold);
  color: var(--text-color);
  margin-bottom: var(--spacing-sm);
}

.feature-card__description {
  color: var(--text-light);
  font-size: 0.9rem;
}

.metrics {
  display: grid;
  gap: var(--spacing-lg);
  grid-template-columns: repeat(2, 1fr);
}

.metric {
  text-align: center;
  padding: var(--spacing-lg);
  background: white;
  border-radius: var(--border-radius-lg);
  box-shadow: 0 4px 12px var(--shadow-light);
}

.metric__number {
  display: block;
  font-size: 2rem;
  font-weight: var(--font-weight-bold);
  color: var(--primary-color);
  margin-bottom: var(--spacing-xs);
}

.metric__label {
  color: var(--text-light);
  font-size: 0.9rem;
}

@media (min-width: 768px) {
  .features__grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .metrics {
    grid-template-columns: repeat(4, 1fr);
  }
}

/* Testimonials Section */
.testimonials {
  background: var(--bg-light);
}

.testimonials__slider {
  position: relative;
  max-width: 800px;
  margin: 0 auto var(--spacing-lg);
  height: 200px;
}

.testimonial {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  opacity: 0;
  transform: translateX(20px);
  transition: all var(--transition-medium);
  background: white;
  padding: var(--spacing-xl);
  border-radius: var(--border-radius-lg);
  box-shadow: 0 4px 12px var(--shadow-light);
  text-align: center;
}

.testimonial.active {
  opacity: 1;
  transform: translateX(0);
}

.testimonial__text {
  font-size: 1.1rem;
  color: var(--text-color);
  margin-bottom: var(--spacing-md);
  font-style: italic;
  line-height: 1.6;
}

.testimonial__author {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
}

.testimonial__name {
  font-weight: var(--font-weight-semibold);
  color: var(--primary-color);
}

.testimonials__controls {
  display: flex;
  justify-content: center;
  gap: var(--spacing-sm);
}

.testimonials__prev,
.testimonials__next {
  background: white;
  border: 2px solid var(--primary-color);
  color: var(--primary-color);
  width: 44px;
  height: 44px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
}

.testimonials__prev:hover,
.testimonials__next:hover {
  background: var(--primary-color);
  color: white;
}

/* About Section */
.about__content {
  display: grid;
  gap: var(--spacing-xl);
  align-items: center;
}

.about__description {
  color: var(--text-light);
  margin-bottom: var(--spacing-md);
  font-size: 1.05rem;
  line-height: 1.7;
}

.about__description:last-child {
  margin-bottom: 0;
}

.about__image img {
  border-radius: var(--border-radius-lg);
  box-shadow: 0 8px 24px var(--shadow-medium);
  width: 100%;
}

@media (min-width: 768px) {
  .about__content {
    grid-template-columns: 1fr 1fr;
  }
}

/* FAQ Section */
.faq__list {
  max-width: 800px;
  margin: 0 auto;
}

.faq__item {
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  margin-bottom: var(--spacing-sm);
  overflow: hidden;
  background: white;
}

.faq__question {
  width: 100%;
  padding: var(--spacing-lg);
  text-align: left;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-weight: var(--font-weight-medium);
  color: var(--text-color);
  transition: background-color var(--transition-fast);
  cursor: pointer;
  min-height: 60px;
}

.faq__question:hover {
  background-color: var(--bg-light);
}

.faq__question[aria-expanded="true"] {
  background-color: var(--primary-color);
  color: white;
}

.faq__icon {
  transition: transform var(--transition-fast);
  flex-shrink: 0;
}

.faq__question[aria-expanded="true"] .faq__icon {
  transform: rotate(180deg);
}

.faq__answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition-medium);
}

.faq__answer.show {
  max-height: 200px;
}

.faq__answer p {
  padding: 0 var(--spacing-lg) var(--spacing-lg);
  color: var(--text-light);
  line-height: 1.6;
}

/* Contact Section */
.contact__content {
  display: grid;
  gap: var(--spacing-xl);
}

.contact__description {
  font-size: 1.1rem;
  color: var(--text-light);
  margin-bottom: var(--spacing-lg);
  text-align: center;
}

.contact__map-placeholder {
  position: relative;
  border-radius: var(--border-radius-lg);
  overflow: hidden;
  margin-bottom: var(--spacing-lg);
}

.contact__map-placeholder img {
  width: 100%;
  height: 250px;
  object-fit: cover;
}

.contact__map-overlay {
  position: absolute;
  inset: 0;
  background: rgba(14, 122, 46, 0.8);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-weight: var(--font-weight-medium);
}

.contact__form {
  background: white;
  padding: var(--spacing-xl);
  border-radius: var(--border-radius-lg);
  box-shadow: 0 4px 12px var(--shadow-light);
}

.form__group {
  margin-bottom: var(--spacing-lg);
}

.form__label {
  display: block;
  margin-bottom: var(--spacing-xs);
  font-weight: var(--font-weight-medium);
  color: var(--text-color);
}

.form__input,
.form__select,
.form__textarea {
  width: 100%;
  padding: var(--spacing-sm);
  border: 2px solid var(--border-color);
  border-radius: var(--border-radius);
  font-family: inherit;
  font-size: 1rem;
  transition: border-color var(--transition-fast);
  background: white;
}

.form__input:focus,
.form__select:focus,
.form__textarea:focus {
  outline: none;
  border-color: var(--primary-color);
}

.form__textarea {
  resize: vertical;
  min-height: 120px;
}

.form__submit {
  width: 100%;
}

@media (min-width: 768px) {
  .contact__content {
    grid-template-columns: 1fr 1fr;
  }

  .contact__description {
    text-align: left;
  }
}

/* Footer */
.footer {
  background: var(--text-color);
  color: white;
  padding: var(--spacing-lg) 0;
}

.footer__content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-md);
  text-align: center;
}

.footer__social {
  display: flex;
  gap: var(--spacing-sm);
}

.footer__social-link {
  width: 40px;
  height: 40px;
  border: 1px solid rgba(255, 255, 255, 0.3);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: rgba(255, 255, 255, 0.7);
  transition: all var(--transition-fast);
}

.footer__social-link:hover {
  background: var(--primary-color);
  border-color: var(--primary-color);
  color: white;
}

@media (min-width: 768px) {
  .footer__content {
    flex-direction: row;
    justify-content: space-between;
    text-align: left;
  }
}

/* Lightbox */
.lightbox {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.9);
  z-index: 2000;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-medium);
}

.lightbox.show {
  opacity: 1;
  visibility: visible;
}

.lightbox__content {
  position: relative;
  max-width: 90vw;
  max-height: 90vh;
  background: white;
  border-radius: var(--border-radius-lg);
  overflow: hidden;
}

.lightbox__close {
  position: absolute;
  top: var(--spacing-sm);
  right: var(--spacing-sm);
  width: 40px;
  height: 40px;
  background: rgba(255, 255, 255, 0.9);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1;
  transition: background-color var(--transition-fast);
}

.lightbox__close:hover {
  background: white;
}

.lightbox__image {
  width: 100%;
  height: auto;
  max-height: 70vh;
  object-fit: contain;
}

.lightbox__info {
  padding: var(--spacing-lg);
  text-align: center;
}

.lightbox__title {
  font-size: 1.25rem;
  font-weight: var(--font-weight-semibold);
  color: var(--text-color);
  margin-bottom: var(--spacing-xs);
}

.lightbox__tag {
  background: var(--primary-color);
  color: white;
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--border-radius);
  font-size: 0.9rem;
}

/* Animations */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.fade-in-up {
  animation: fadeInUp 0.6s ease forwards;
}

/* Utility Classes */
.text-center {
  text-align: center;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* Form Validation States */
.form__input.error,
.form__select.error,
.form__textarea.error {
  border-color: #dc3545;
}

.form__error {
  color: #dc3545;
  font-size: 0.875rem;
  margin-top: var(--spacing-xs);
  display: none;
}

.form__error.show {
  display: block;
}

.form__success {
  background: #d4edda;
  color: #155724;
  padding: var(--spacing-sm);
  border-radius: var(--border-radius);
  margin-top: var(--spacing-sm);
  display: none;
}

.form__success.show {
  display: block;
}

/* Responsive Design */
@media (max-width: 480px) {
  :root {
    --spacing-sm: 0.75rem;
    --spacing-md: 1.25rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-xxl: 2.5rem;
  }

  .hero__title {
    font-size: 1.75rem;
  }

  .section__title {
    font-size: 1.75rem;
  }

  .service-card,
  .feature-card {
    padding: var(--spacing-lg);
  }

  .contact__form {
    padding: var(--spacing-lg);
  }
}

@media (min-width: 1200px) {
  .container {
    padding: 0 var(--spacing-xl);
  }
}

/* Performance Optimizations */
.project-card img,
.about__image img {
  will-change: filter, transform;
}

.service-card,
.feature-card,
.project-card {
  will-change: transform;
}

/* Print Styles */
@media print {
  .header,
  .nav__toggle,
  .testimonials__controls,
  .lightbox,
  .footer__social {
    display: none;
  }

  .main {
    margin-top: 0;
  }

  .section {
    break-inside: avoid;
    page-break-inside: avoid;
  }
}