:root {
  --primary-color: #1e3a8a;
  --secondary-color: #0ea5e9;
  --accent-color: #f59e0b;
  --dark-color: #1f2937;
  --light-color: #f8fafc;
  --white-color: #ffffff;
  --text-color: #374151;
  --text-light: #6b7280;
  --border-color: #e5e7eb;

  --gradient-primary: linear-gradient(135deg, #1e3a8a 0%, #0ea5e9 100%);
  --gradient-button: linear-gradient(45deg, #0ea5e9 0%, #06b6d4 100%);
  --gradient-card: linear-gradient(145deg, #ffffff 0%, #f8fafc 100%);

  --font-family: 'Inter', sans-serif;
  --font-mono: 'JetBrains Mono', monospace;

  --h1-font-size: 3.5rem;
  --h2-font-size: 2.5rem;
  --h3-font-size: 1.875rem;
  --h4-font-size: 1.5rem;
  --normal-font-size: 1rem;
  --small-font-size: 0.875rem;

  --font-light: 300;
  --font-regular: 400;
  --font-medium: 500;
  --font-semibold: 600;
  --font-bold: 700;

  --section-padding: 5rem 0;
  --container-padding: 0 1rem;
  --border-radius: 0.75rem;
  --border-radius-sm: 0.5rem;
  --border-radius-lg: 1rem;

  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);

  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-fast: all 0.15s cubic-bezier(0.4, 0, 0.2, 1);

  --z-tooltip: 10;
  --z-fixed: 100;
  --z-modal: 1000;
}

@media screen and (max-width: 768px) {
  :root {
    --h1-font-size: 2.5rem;
    --h2-font-size: 2rem;
    --h3-font-size: 1.5rem;
    --h4-font-size: 1.25rem;
    --section-padding: 3rem 0;
  }
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-family);
  font-size: var(--normal-font-size);
  color: var(--text-color);
  line-height: 1.6;
  background-color: var(--white-color);
}

html, body {
  overflow-x: hidden;
}

h1, h2, h3, h4 {
  color: var(--dark-color);
  font-weight: var(--font-semibold);
  line-height: 1.2;
}

ul {
  list-style: none;
}

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

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

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

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

.section {
  padding: var(--section-padding);
}

.section__header {
  text-align: center;
  margin-bottom: 3rem;
}

.section__title {
  font-size: var(--h2-font-size);
  margin-bottom: 1rem;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.section__description {
  font-size: 1.125rem;
  color: var(--text-light);
  max-width: 600px;
  margin: 0 auto;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.875rem 1.5rem;
  border-radius: var(--border-radius);
  font-weight: var(--font-medium);
  transition: var(--transition);
  cursor: pointer;
  border: none;
  text-decoration: none;
}

.btn--primary {
  background: var(--gradient-button);
  color: var(--white-color);
  box-shadow: var(--shadow-md);
}

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

.btn--secondary {
  background: var(--white-color);
  color: var(--primary-color);
  border: 2px solid var(--primary-color);
}

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

.btn--full {
  width: 100%;
  justify-content: center;
}

.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  box-shadow: var(--shadow-sm);
  z-index: var(--z-fixed);
  transition: var(--transition);
}

.nav {
  height: 4.5rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.nav__brand {
  display: flex;
  align-items: center;
}

.nav__logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: var(--font-bold);
  color: var(--primary-color);
}

.nav__logo-icon {
  width: 2rem;
  height: 2rem;
  color: var(--secondary-color);
}

.logo__img {
  width: 8rem;
  object-fit: contain;
  display: block;
}

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

.nav__list {
  display: flex;
  gap: 2rem;
}

.nav__link {
  font-weight: var(--font-medium);
  color: var(--text-color);
  transition: var(--transition);
  position: relative;
}

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

.nav__link.active::after {
  content: '';
  position: absolute;
  bottom: -0.5rem;
  left: 0;
  width: 100%;
  height: 2px;
  background: var(--gradient-button);
  border-radius: 1px;
}

.nav__language {
  display: flex;
  gap: 0.5rem;
  background: var(--light-color);
  border-radius: var(--border-radius);
  padding: 0.25rem;
}

.lang__btn {
  padding: 0.5rem 0.75rem;
  background: transparent;
  color: var(--text-color);
  border: none;
  border-radius: var(--border-radius-sm);
  font-weight: var(--font-medium);
  font-size: var(--small-font-size);
  transition: var(--transition);
  cursor: pointer;
}

.lang__btn.active,
.lang__btn:hover {
  background: var(--primary-color);
  color: var(--white-color);
}

.nav__toggle,
.nav__close {
  display: none;
  font-size: 1.5rem;
  color: var(--primary-color);
  cursor: pointer;
}

.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
  padding-top: 5.5rem; /* Account for fixed header */
}

.hero__container {
  position: relative;
  z-index: 2;
}

.hero__content {
  text-align: center;
  max-width: 800px;
  margin: 0 auto;
}

.hero__badge {
  display: inline-block;
  padding: 0.35rem 0.75rem;
  border-radius: 9999px;
  background: rgba(255, 255, 255, 0.15);
  border: 1px solid rgba(255, 255, 255, 0.35);
  color: var(--white-color);
  font-size: 0.875rem;
  margin-bottom: 0.75rem;
  backdrop-filter: blur(6px);
}

.hero__title {
  font-size: var(--h1-font-size);
  font-weight: var(--font-bold);
  margin-bottom: 1.5rem;
  color: var(--white-color);
}

.hero__title-accent {
  background: linear-gradient(45deg, var(--accent-color), #fbbf24);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero__description {
  font-size: 1.25rem;
  color: rgba(255, 255, 255, 0.9);
  margin-bottom: 2.5rem;
  line-height: 1.7;
}

.hero__buttons {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 4rem;
}

.hero__stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 2rem;
  max-width: 600px;
  margin: 0 auto;
}

.hero__stat {
  text-align: center;
  color: var(--white-color);
}

.hero__stat-number {
  display: inline-block;
  font-size: 2.5rem;
  font-weight: var(--font-bold);
  color: var(--accent-color);
  margin-bottom: 0.5rem;
  font-family: var(--font-mono);
}

.hero__stat-plus,
.hero__stat-unit {
  font-size: 2.5rem;
  font-weight: var(--font-bold);
  color: var(--accent-color);
  font-family: var(--font-mono);
}

.hero__stat-text {
  display: block;
  font-size: var(--small-font-size);
  opacity: 0.9;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.hero__background {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: var(--gradient-primary);
  z-index: 1;
}

.hero__overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: url('images/team-small.png') center/cover;
  opacity: 0.3;
}

.services {
  background: var(--light-color);
}

.services__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 2rem;
  margin-bottom: 3rem;
}

.service__card {
  background: var(--gradient-card);
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow);
  transition: var(--transition);
  border: 1px solid var(--border-color);
  overflow: hidden;
}

.service__card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-xl);
}

.service__image {
  position: relative;
  height: 200px;
  overflow: hidden;
}

.service__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: var(--transition);
}

.service__card:hover .service__image img {
  transform: scale(1.05);
}

.service__icon {
  position: absolute;
  top: 1rem;
  right: 1rem;
  width: 3rem;
  height: 3rem;
  background: var(--gradient-button);
  border-radius: var(--border-radius);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-md);
}

.service__icon svg {
  width: 1.5rem;
  height: 1.5rem;
  color: var(--white-color);
}

.service__content {
  padding: 2rem;
}

.service__title {
  font-size: var(--h4-font-size);
  margin-bottom: 1rem;
  color: var(--primary-color);
}

.service__description {
  color: var(--text-light);
  margin-bottom: 1.5rem;
  line-height: 1.7;
}

.service__features {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.service__features li {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--text-color);
  font-size: var(--small-font-size);
}

.service__features li::before {
  content: '✓';
  color: var(--secondary-color);
  font-weight: var(--font-bold);
}

.services__cta {
  text-align: center;
  padding: 2rem;
  background: var(--white-color);
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-md);
}

.services__cta-text {
  font-size: 1.125rem;
  color: var(--text-color);
  margin-bottom: 1.5rem;
}

.equipment__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
}

.equipment__item {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  padding: 1.5rem;
  background: var(--white-color);
  border-radius: var(--border-radius);
  box-shadow: var(--shadow);
  transition: var(--transition);
  border-left: 4px solid var(--secondary-color);
}

.equipment__item:hover {
  transform: translateX(5px);
  box-shadow: var(--shadow-lg);
}

.equipment__icon {
  width: 3rem;
  height: 3rem;
  background: var(--light-color);
  border-radius: var(--border-radius);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.equipment__icon i {
  width: 1.5rem;
  height: 1.5rem;
  color: var(--primary-color);
}

.equipment__title {
  font-size: 1.125rem;
  font-weight: var(--font-semibold);
  color: var(--primary-color);
  margin-bottom: 0.25rem;
}

.equipment__description {
  color: var(--text-light);
  font-size: var(--small-font-size);
  margin-bottom: 0.5rem;
}

.equipment__type {
  display: inline-block;
  padding: 0.25rem 0.75rem;
  background: var(--secondary-color);
  color: var(--white-color);
  border-radius: 1rem;
  font-size: 0.75rem;
  font-weight: var(--font-medium);
}

.production {
  background: var(--light-color);
}

.production__filters {
  display: flex;
  justify-content: center;
  gap: 1rem;
  margin-bottom: 3rem;
  flex-wrap: wrap;
}

.filter__btn {
  padding: 0.75rem 1.5rem;
  background: var(--white-color);
  color: var(--text-color);
  border: 2px solid var(--border-color);
  border-radius: var(--border-radius);
  font-weight: var(--font-medium);
  transition: var(--transition);
  cursor: pointer;
}

.filter__btn:hover,
.filter__btn.active {
  background: var(--primary-color);
  color: var(--white-color);
  border-color: var(--primary-color);
}

.production__grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 1.5rem;
  margin-bottom: 3rem;
}

.production__grid.metro {
  grid-template-columns: repeat(4, 1fr);
  grid-auto-rows: 10px;
}

.production__item.metro {
  display: block;
  border-radius: var(--border-radius);
  overflow: hidden;
}

.production__item.metro img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.production__item {
  background: var(--white-color);
  border-radius: var(--border-radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  transition: var(--transition);
  cursor: pointer;
}

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

.production__image {
  width: 100%;
  height: 250px;
  object-fit: cover;
}

.production__content {
  padding: 1rem;
}

.production__title {
  font-size: 1.125rem;
  font-weight: var(--font-semibold);
  margin-bottom: 0.5rem;
}

.production__category {
  display: inline-block;
  padding: 0.25rem 0.75rem;
  background: var(--light-color);
  color: var(--text-light);
  border-radius: 1rem;
  font-size: 0.75rem;
}

.production__cta {
  text-align: center;
  padding: 3rem 2rem;
  background: var(--white-color);
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-md);
}

.production__cta h3 {
  font-size: var(--h3-font-size);
  margin-bottom: 1.5rem;
  color: var(--primary-color);
}

.production__more {
  text-align: center;
  margin-top: 1rem;
}

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

.about__text {
  color: var(--text-light);
  margin-bottom: 1.5rem;
  line-height: 1.8;
}

.about__features {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1rem;
  margin-top: 2rem;
}

.about__feature {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  color: var(--text-color);
}

.about__feature i {
  width: 1.25rem;
  height: 1.25rem;
  color: var(--secondary-color);
}

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

.about__img {
  width: 100%;
  height: 400px;
  object-fit: cover;
}

.announcements {
  background: var(--light-color);
}

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

.announcement {
  display: grid;
  grid-template-columns: 150px 1fr;
  gap: 2rem;
  margin-bottom: 3rem;
  padding: 2rem;
  background: var(--white-color);
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow);
  border-left: 4px solid var(--secondary-color);
}

.announcement__date {
  font-weight: var(--font-semibold);
  color: var(--primary-color);
  font-size: var(--small-font-size);
}

.announcement__title {
  font-size: var(--h4-font-size);
  margin-bottom: 1rem;
  color: var(--primary-color);
}

.announcement__text {
  color: var(--text-light);
  line-height: 1.7;
  margin-bottom: 1rem;
}

.announcement__details {
  display: flex;
  gap: 1.5rem;
  flex-wrap: wrap;
}

.announcement__budget,
.announcement__duration {
  display: inline-block;
  padding: 0.5rem 1rem;
  background: var(--light-color);
  color: var(--text-color);
  border-radius: var(--border-radius);
  font-size: var(--small-font-size);
  font-weight: var(--font-medium);
}

.announcement__media {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-wrap: wrap;
  margin: 0.5rem 0 1rem;
}

.announcement__media img {
  height: 75px;
  width: auto;
  object-fit: contain;
  background: var(--white-color);
  border-radius: var(--border-radius);
  box-shadow: var(--shadow);
  padding: 0.25rem;
}

.announcement__disclaimer {
  font-size: 0.8rem;
  color: var(--text-light);
  background: var(--light-color);
  padding: 0.75rem 1rem;
  border-radius: var(--border-radius);
  border: 1px solid var(--border-color);
  margin-top: 0.75rem;
}

.contact__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
}

.contact__form {
  background: var(--white-color);
  padding: 2rem;
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-lg);
}

.form__group {
  margin-bottom: 1.5rem;
}

.form__label {
  display: block;
  margin-bottom: 0.5rem;
  font-weight: var(--font-medium);
  color: var(--text-color);
}

.form__input,
.form__textarea {
  width: 100%;
  padding: 0.875rem;
  border: 2px solid var(--border-color);
  border-radius: var(--border-radius);
  font-family: inherit;
  font-size: var(--normal-font-size);
  transition: var(--transition);
  background: var(--white-color);
}

.form__input:focus,
.form__textarea:focus {
  outline: none;
  border-color: var(--secondary-color);
  box-shadow: 0 0 0 3px rgba(14, 165, 233, 0.1);
}

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

.form__error {
  display: block;
  color: #ef4444;
  font-size: var(--small-font-size);
  margin-top: 0.25rem;
}

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

.contact__item {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
}

.contact__icon {
  width: 3rem;
  height: 3rem;
  background: var(--gradient-button);
  border-radius: var(--border-radius);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.contact__icon svg {
  width: 1.5rem;
  height: 1.5rem;
  color: var(--white-color);
}

.contact__details h4 {
  font-size: 1.125rem;
  margin-bottom: 0.5rem;
  color: var(--primary-color);
}

.contact__details p {
  color: var(--text-light);
  line-height: 1.6;
}

.contact__details a {
  color: var(--secondary-color);
  transition: var(--transition);
}

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

.footer {
  background: var(--dark-color);
  color: var(--white-color);
  padding: 2rem 0;
}

.footer__content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
}

.footer__logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: var(--font-bold);
  font-size: 1.125rem;
  margin-bottom: 0.5rem;
}

.footer__logo img.logo__img {
  width: 1.5rem;
  height: 1.5rem;
}

.footer__description {
  color: rgba(255, 255, 255, 0.7);
  font-size: var(--small-font-size);
}

.footer__info {
  text-align: right;
}

.footer__info p {
  color: rgba(255, 255, 255, 0.7);
  font-size: var(--small-font-size);
}

.footer__link {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  color: #93c5fd;
  transition: var(--transition);
}

.footer__link:hover {
  color: #bfdbfe;
}

.footer__link i {
  width: 1rem;
  height: 1rem;
}

@media screen and (max-width: 1024px) {
  .about__grid,
  .contact__grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .announcement {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }

  .production__grid.metro {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media screen and (max-width: 768px) {
  .nav {
    height: 4rem;
  }

  .nav__menu {
    position: fixed;
    top: 0;
    right: 0;
    width: 100%;
    height: 100vh;
    background: var(--white-color);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: 3rem;
    transition: var(--transition);
    z-index: var(--z-modal);
    transform: translateX(100%);
    box-shadow: none; /* shadow only when open */
  }

  .nav__menu.show-menu {
    transform: translateX(0);
    box-shadow: var(--shadow-xl);
  }

  .nav__toggle {
    display: block;
    font-size: 1.5rem;
    color: var(--primary-color);
    cursor: pointer;
  }

  .nav__list {
    flex-direction: column;
    text-align: center;
    gap: 2rem;
  }

  .nav__language {
    justify-content: center;
  }

  .nav__link {
    font-size: var(--h3-font-size);
    color: var(--primary-color);
  }

  .nav__close {
    display: block;
    position: absolute;
    top: 1.5rem;
    right: 1.5rem;
    font-size: 2rem;
    color: var(--primary-color);
    cursor: pointer;
  }

  .hero {
    padding-top: 5.5rem;
  }

  .hero__title {
    font-size: 2.5rem;
  }

  .hero__buttons {
    flex-direction: column;
    align-items: center;
  }

  .hero__stats {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }

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

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

  .production__filters {
    flex-wrap: wrap;
    justify-content: center;
  }

  .production__grid {
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  }

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

  .about__container {
    grid-template-columns: 1fr;
    text-align: center;
  }

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

@media screen and (max-width: 480px) {
  .container {
    padding: 0 0.75rem;
  }

  .hero__title {
    font-size: 2rem;
  }

  .hero__description {
    font-size: 1rem;
  }

  .service__card,
  .equipment__card {
    padding: 1.5rem;
  }

  .btn {
    padding: 0.75rem 1.5rem;
    font-size: var(--small-font-size);
  }

  .production__grid {
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  }

  .production__grid.metro {
    grid-template-columns: 1fr;
  }
}