:root {
  /* Primitive Color Tokens */
  --color-white: rgba(255, 255, 255, 1);
  --color-black: rgba(0, 0, 0, 1);
  --color-cream-50: rgba(252, 252, 249, 1);
  --color-cream-100: rgba(255, 255, 253, 1);
  --color-gray-200: rgba(245, 245, 245, 1);
  --color-gray-300: rgba(167, 169, 169, 1);
  --color-gray-400: rgba(119, 124, 124, 1);
  --color-slate-500: rgba(98, 108, 113, 1);
  --color-brown-600: rgba(94, 82, 64, 1);
  --color-charcoal-700: rgba(31, 33, 33, 1);
  --color-charcoal-800: rgba(38, 40, 40, 1);
  --color-slate-900: rgba(19, 52, 59, 1);
  --color-teal-300: rgba(50, 184, 198, 1);
  --color-teal-400: rgba(45, 166, 178, 1);
  --color-teal-500: rgba(33, 128, 141, 1);
  --color-teal-600: rgba(29, 116, 128, 1);
  --color-teal-700: rgba(26, 104, 115, 1);
  --color-teal-800: rgba(41, 150, 161, 1);
  --color-red-400: rgba(255, 84, 89, 1);
  --color-red-500: rgba(192, 21, 47, 1);
  --color-orange-400: rgba(230, 129, 97, 1);
  --color-orange-500: rgba(168, 75, 47, 1);

  /* RGB versions for opacity control */
  --color-brown-600-rgb: 94, 82, 64;
  --color-teal-500-rgb: 33, 128, 141;
  --color-slate-900-rgb: 19, 52, 59;
  --color-slate-500-rgb: 98, 108, 113;
  --color-red-500-rgb: 192, 21, 47;
  --color-red-400-rgb: 255, 84, 89;
  --color-orange-500-rgb: 168, 75, 47;
  --color-orange-400-rgb: 230, 129, 97;

  /* Background color tokens (Light Mode) */
  --color-bg-1: rgba(59, 130, 246, 0.08); /* Light blue */
  --color-bg-2: rgba(245, 158, 11, 0.08); /* Light yellow */
  --color-bg-3: rgba(34, 197, 94, 0.08); /* Light green */
  --color-bg-4: rgba(239, 68, 68, 0.08); /* Light red */
  --color-bg-5: rgba(147, 51, 234, 0.08); /* Light purple */
  --color-bg-6: rgba(249, 115, 22, 0.08); /* Light orange */
  --color-bg-7: rgba(236, 72, 153, 0.08); /* Light pink */
  --color-bg-8: rgba(6, 182, 212, 0.08); /* Light cyan */

  /* Semantic Color Tokens (Light Mode) */
  --color-background: var(--color-cream-50);
  --color-surface: var(--color-cream-100);
  --color-text: var(--color-charcoal-800);
  --color-text-secondary: var(--color-slate-500);
  --color-text-muted: var(--color-gray-400);
  --color-primary: var(--color-slate-900);
  --color-primary-hover: var(--color-teal-700);
  --color-secondary: var(--color-teal-500);
  --color-secondary-hover: var(--color-teal-600);
  --color-accent: var(--color-orange-400);
  --color-accent-hover: var(--color-orange-500);
  --color-success: rgba(34, 197, 94, 1);
  --color-warning: rgba(245, 158, 11, 1);
  --color-error: var(--color-red-400);
  --color-border: var(--color-gray-200);
  --color-border-focus: var(--color-teal-400);
  --color-shadow: rgba(0, 0, 0, 0.1);
  --color-shadow-hover: rgba(0, 0, 0, 0.15);
}

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

html {
  font-size: 16px;
  line-height: 1.6;
  scroll-behavior: smooth;
}

body {
  font-family: 'Inter', 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  color: var(--color-text);
  background-color: var(--color-background);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-weight: 600;
  line-height: 1.2;
  margin-bottom: 1rem;
}

h1 { font-size: 2.5rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.75rem; }
h4 { font-size: 1.5rem; }
h5 { font-size: 1.25rem; }
h6 { font-size: 1.125rem; }

p {
  margin-bottom: 1rem;
  line-height: 1.6;
}

a {
  color: var(--color-secondary);
  text-decoration: none;
  transition: color 0.2s ease;
}

a:hover {
  color: var(--color-secondary-hover);
}

/* Layout */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 1.5rem;
  border: none;
  border-radius: 0.5rem;
  font-size: 1rem;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  transition: all 0.2s ease;
  gap: 0.5rem;
}

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

.btn--primary:hover {
  background-color: var(--color-secondary-hover);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(var(--color-teal-500-rgb), 0.4);
}

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

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

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

.btn--accent:hover {
  background-color: var(--color-accent-hover);
}

.btn--lg {
  padding: 1rem 2rem;
  font-size: 1.125rem;
}

/* Hero Section */
.hero {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
  color: var(--color-white);
  padding: 5rem 0;
  min-height: 70vh;
  display: flex;
  align-items: center;
}

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

.hero__title {
  font-size: 3rem;
  font-weight: 700;
  margin-bottom: 1.5rem;
  line-height: 1.1;
}

.hero__subtitle {
  font-size: 1.25rem;
  margin-bottom: 2rem;
  opacity: 0.9;
}

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

.hero__image {
  display: flex;
  justify-content: center;
  align-items: center;
}

.hero__placeholder {
  background: rgba(255, 255, 255, 0.1);
  border: 2px dashed rgba(255, 255, 255, 0.3);
  border-radius: 1rem;
  padding: 3rem;
  text-align: center;
  min-height: 300px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
}

.placeholder-icon {
  font-size: 4rem;
  margin-bottom: 1rem;
}

/* Profile Section */
.profile {
  padding: 5rem 0;
  background-color: var(--color-surface);
}

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

.profile__name {
  font-size: 2.5rem;
  color: var(--color-primary);
  margin-bottom: 0.5rem;
}

.profile__role {
  font-size: 1.5rem;
  color: var(--color-accent);
  font-weight: 600;
  margin-bottom: 2rem;
}

.profile__details {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.profile__detail {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 0.75rem;
  background: var(--color-white);
  border-radius: 0.5rem;
  box-shadow: 0 2px 8px var(--color-shadow);
}

.detail__icon {
  font-size: 1.5rem;
  min-width: 2rem;
}

.detail__content {
  display: flex;
  flex-direction: column;
}

.detail__content strong {
  color: var(--color-primary);
  font-size: 0.875rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.profile__description h3 {
  color: var(--color-primary);
  margin-bottom: 1rem;
}

.profile__motto {
  font-size: 1.125rem;
  color: var(--color-accent);
  font-style: italic;
}

/* Section Title */
.section__title {
  font-size: 2.5rem;
  text-align: center;
  color: var(--color-primary);
  margin-bottom: 3rem;
  position: relative;
}

.section__title::after {
  content: '';
  position: absolute;
  bottom: -0.5rem;
  left: 50%;
  transform: translateX(-50%);
  width: 4rem;
  height: 0.25rem;
  background: var(--color-accent);
  border-radius: 0.125rem;
}

/* Advantages Section */
.advantages {
  padding: 5rem 0;
  background-color: var(--color-background);
}

.advantages__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
}

.advantage__card {
  background: var(--color-white);
  padding: 2.5rem 2rem;
  border-radius: 1rem;
  text-align: center;
  box-shadow: 0 4px 20px var(--color-shadow);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  border-top: 4px solid var(--color-accent);
}

.advantage__card:hover {
  transform: translateY(-8px);
  box-shadow: 0 8px 30px var(--color-shadow-hover);
}

.advantage__icon {
  font-size: 3rem;
  margin-bottom: 1.5rem;
  display: block;
}

.advantage__title {
  font-size: 1.25rem;
  color: var(--color-primary);
  margin-bottom: 1rem;
  font-weight: 700;
}

.advantage__description {
  color: var(--color-text-secondary);
  line-height: 1.6;
}

/* Technologies Section */
.technologies {
  padding: 5rem 0;
  background-color: var(--color-surface);
}

.tech__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 1.5rem;
}

.tech__card {
  background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
  color: var(--color-white);
  padding: 2rem;
  border-radius: 1rem;
  text-align: center;
  transition: transform 0.3s ease;
}

.tech__card:hover {
  transform: scale(1.05);
}

.tech__icon {
  font-size: 2.5rem;
  margin-bottom: 1rem;
  display: block;
}

.tech__card h3 {
  font-size: 1.25rem;
  margin-bottom: 0.5rem;
}

.tech__card p {
  font-size: 0.875rem;
  opacity: 0.9;
  margin: 0;
}

/* Materials Section */
.materials {
  padding: 5rem 0;
  background-color: var(--color-background);
}

.materials__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2rem;
}

.material__category {
  background: var(--color-white);
  border-radius: 1rem;
  overflow: hidden;
  box-shadow: 0 4px 20px var(--color-shadow);
  transition: transform 0.3s ease;
}

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

.material__header {
  background: linear-gradient(135deg, var(--color-bg-1), var(--color-bg-2));
  padding: 1.5rem;
  display: flex;
  align-items: center;
  gap: 1rem;
}

.material__icon {
  font-size: 2rem;
}

.material__title {
  font-size: 1.25rem;
  color: var(--color-primary);
  margin: 0;
}

.material__list {
  list-style: none;
  padding: 0;
  margin: 0;
}

.material__list li {
  padding: 0.75rem 1.5rem;
  border-bottom: 1px solid var(--color-border);
  transition: background-color 0.2s ease;
}

.material__list li:last-child {
  border-bottom: none;
}

.material__list li:hover {
  background-color: var(--color-bg-1);
}

/* Sectors Section */
.sectors {
  padding: 5rem 0;
  background-color: var(--color-surface);
}

.sectors__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
}

.sector__card {
  background: var(--color-white);
  padding: 2rem;
  border-radius: 1rem;
  border-left: 4px solid var(--color-accent);
  box-shadow: 0 4px 20px var(--color-shadow);
  transition: transform 0.3s ease, border-left-color 0.3s ease;
}

.sector__card:hover {
  transform: translateY(-4px);
  border-left-color: var(--color-secondary);
}

.sector__icon {
  font-size: 2.5rem;
  margin-bottom: 1rem;
  display: block;
}

.sector__name {
  font-size: 1.5rem;
  color: var(--color-primary);
  margin-bottom: 1rem;
}

.sector__description {
  color: var(--color-text-secondary);
  line-height: 1.6;
  margin: 0;
}

/* Contact Section */
.contact {
  padding: 5rem 0;
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
  color: var(--color-white);
}

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

.contact__form-container {
  background: var(--color-primary);
  padding: 2rem;
  border-radius: 1rem;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
}

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

.form__group {
  display: flex;
  flex-direction: column;
}

.form__label {
  font-weight: 600;
  margin-bottom: 0.5rem;
  color: var(--color-white);
}

.form__input,
.form__textarea {
  padding: 0.75rem;
  border: 2px solid rgba(255, 255, 255, 0.2);
  border-radius: 0.5rem;
  background: rgba(255, 255, 255, 0.1);
  color: var(--color-white);
  font-size: 1rem;
  transition: border-color 0.2s ease;
}

.form__input:focus,
.form__textarea:focus {
  outline: none;
  border-color: var(--color-accent);
  background: rgba(255, 255, 255, 0.15);
}

.form__input::placeholder,
.form__textarea::placeholder {
  color: rgba(255, 255, 255, 0.6);
}

.form__textarea {
  min-height: 100px;
  resize: vertical;
  font-family: inherit;
}

.form__submit {
  background-color: var(--color-accent);
  color: var(--color-white);
  padding: 1rem 2rem;
  border: none;
  border-radius: 0.5rem;
  font-size: 1.125rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
}

.form__submit:hover {
  background-color: var(--color-accent-hover);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(var(--color-orange-400-rgb), 0.4);
}

.contact__info h3 {
  margin-bottom: 2rem;
  font-size: 1.75rem;
}

.contact__direct {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.contact__link {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1rem;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 0.5rem;
  color: var(--color-white);
  text-decoration: none;
  transition: all 0.2s ease;
  border: 1px solid rgba(255, 255, 255, 0.2);
}

.contact__link:hover {
  background: rgba(255, 255, 255, 0.2);
  color: var(--color-white);
  transform: translateY(-2px);
}

.contact__icon {
  font-size: 1.5rem;
  min-width: 2rem;
}

.contact__link div {
  display: flex;
  flex-direction: column;
}

.contact__link strong {
  font-size: 0.875rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  opacity: 0.8;
}

/* Footer */
.footer {
  background-color: var(--color-charcoal-800);
  color: var(--color-white);
  padding: 3rem 0 1rem;
}

.footer__content {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 2rem;
  align-items: center;
  margin-bottom: 2rem;
}

.footer__main h3 {
  color: var(--color-accent);
  margin-bottom: 1rem;
}

.footer__main p {
  margin-bottom: 0.5rem;
  opacity: 0.8;
}

.footer__motto {
  text-align: right;
  font-size: 1.125rem;
  color: var(--color-accent);
}

.footer__bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: 1rem;
  text-align: center;
  opacity: 0.6;
}

.footer__bottom p {
  margin: 0;
}

/* Modal */
.modal {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
}

.modal.hidden {
  display: none;
}

.modal__overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(4px);
}

.modal__content {
  position: relative;
  background: var(--color-white);
  border-radius: 1rem;
  max-width: 400px;
  width: 90%;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
  z-index: 1001;
}

.modal__header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.5rem;
  border-bottom: 1px solid var(--color-border);
}

.modal__header h3 {
  color: var(--color-primary);
  margin: 0;
}

.modal__close {
  background: none;
  border: none;
  font-size: 1.5rem;
  cursor: pointer;
  color: var(--color-text-muted);
  padding: 0;
  width: 2rem;
  height: 2rem;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  transition: background-color 0.2s ease;
}

.modal__close:hover {
  background-color: var(--color-bg-4);
}

.modal__body {
  padding: 1.5rem;
}

.modal__body p {
  margin: 0;
  color: var(--color-text-secondary);
}

/* Responsive Design */
@media (max-width: 768px) {
  .container {
    padding: 0 1rem;
  }

  .hero__title {
    font-size: 2rem;
  }

  .hero__content,
  .profile__content,
  .contact__content {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .hero__actions {
    flex-direction: column;
  }

  .advantages__grid,
  .tech__grid,
  .materials__grid,
  .sectors__grid {
    grid-template-columns: 1fr;
  }

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

  .footer__motto {
    text-align: center;
  }
}

@media (max-width: 480px) {
  .hero {
    padding: 3rem 0;
  }

  .profile,
  .advantages,
  .technologies,
  .materials,
  .sectors,
  .contact {
    padding: 3rem 0;
  }

  .hero__title {
    font-size: 1.75rem;
  }

  .section__title {
    font-size: 2rem;
  }
}

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

.advantage__card,
.tech__card,
.material__category,
.sector__card {
  animation: fadeInUp 0.6s ease-out;
}

/* Print Styles */
@media print {
  .hero {
    background: var(--color-primary) !important;
    -webkit-print-color-adjust: exact;
  }

  .contact__form-container {
    background: var(--color-gray-200) !important;
    -webkit-print-color-adjust: exact;
  }

  .contact__link {
    border: 1px solid var(--color-border) !important;
  }
}