/* Base Variables */
:root {
  /* Neo-Brutalist Color Palette - Tetrad */
  --color-primary: #ff3366;
  --color-primary-dark: #cc194d;
  --color-primary-light: #ff6699;
  
  --color-secondary: #33cc66;
  --color-secondary-dark: #1a994d;
  --color-secondary-light: #66e699;
  
  --color-tertiary: #3366ff;
  --color-tertiary-dark: #1a4dcc;
  --color-tertiary-light: #6699ff;
  
  --color-quaternary: #ff9933;
  --color-quaternary-dark: #cc7a1a;
  --color-quaternary-light: #ffb366;
  
  --color-dark: #101010;
  --color-dark-medium: #252525;
  --color-gray: #555555;
  --color-gray-light: #888888;
  --color-light: #f5f5f5;
  --color-white: #ffffff;
  
  /* Font Families */
  --font-heading: 'Archivo Black', sans-serif;
  --font-body: 'Roboto', sans-serif;
  
  /* Spacing */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 2rem;
  --space-xl: 3rem;
  --space-xxl: 5rem;
  
  /* Border Radius */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 16px;
  
  /* Box Shadow */
  --shadow-sm: 4px 4px 0 rgba(0, 0, 0, 0.8);
  --shadow-md: 6px 6px 0 rgba(0, 0, 0, 0.8);
  --shadow-lg: 10px 10px 0 rgba(0, 0, 0, 0.8);
  
  /* Transitions */
  --transition-fast: 0.2s ease-in-out;
  --transition-medium: 0.3s ease-in-out;
  --transition-slow: 0.5s ease-in-out;
}

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

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

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

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

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

a:hover {
  color: var(--color-tertiary-dark);
  text-decoration: underline;
}

ul, ol {
  list-style: none;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  line-height: 1.2;
  margin-bottom: var(--space-md);
  color: var(--color-dark);
  font-weight: 900;
  text-transform: uppercase;
}

h1 {
  font-size: 3.5rem;
  margin-bottom: var(--space-lg);
}

h2 {
  font-size: 2.5rem;
  margin-bottom: var(--space-lg);
  position: relative;
  display: inline-block;
}

h2:after {
  content: '';
  position: absolute;
  height: 0.5rem;
  width: 30%;
  background-color: var(--color-primary);
  bottom: -10px;
  left: 0;
}

h3 {
  font-size: 1.75rem;
}

h4 {
  font-size: 1.25rem;
}

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

/* Layout & Container */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-lg);
}

section {
  padding: var(--space-xl) 0;
  position: relative;
}

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

.overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(to bottom, rgba(0,0,0,0.7), rgba(0,0,0,0.4));
  z-index: 1;
}

/* Buttons */
.btn,
button,
input[type="submit"] {
  display: inline-block;
  padding: 0.75rem 1.5rem;
  font-family: var(--font-heading);
  font-size: 1rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
  text-align: center;
  cursor: pointer;
  background-color: var(--color-primary);
  color: var(--color-white);
  border: 3px solid var(--color-dark);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-fast);
  position: relative;
  top: 0;
  left: 0;
}

.btn:hover,
button:hover,
input[type="submit"]:hover {
  background-color: var(--color-primary-dark);
  box-shadow: var(--shadow-md);
  top: -2px;
  left: -2px;
  transform: scale(1.02);
  text-decoration: none;
}

.btn:active,
button:active,
input[type="submit"]:active {
  top: 0;
  left: 0;
  box-shadow: 2px 2px 0 rgba(0,0,0,0.8);
  transform: scale(0.98);
}

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

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

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

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

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

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

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

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

.full-width {
  width: 100%;
}

/* Header & Navigation */
.header {
  background-color: var(--color-dark);
  padding: var(--space-md) 0;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

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

.logo h1 {
  color: var(--color-white);
  font-size: 1.5rem;
  margin: 0;
  text-transform: uppercase;
  letter-spacing: 2px;
}

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

.nav__link {
  color: var(--color-white);
  font-weight: 700;
  font-size: 1rem;
  text-transform: uppercase;
  position: relative;
  padding: var(--space-sm) 0;
}

.nav__link::after {
  content: '';
  position: absolute;
  width: 0;
  height: 3px;
  bottom: 0;
  left: 0;
  background-color: var(--color-primary);
  transition: width var(--transition-fast);
}

.nav__link:hover {
  color: var(--color-primary-light);
  text-decoration: none;
}

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

.burger-menu {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  width: 30px;
  height: 20px;
  position: relative;
  z-index: 1001;
}

.burger-menu span {
  display: block;
  width: 100%;
  height: 3px;
  background-color: var(--color-white);
  margin: 5px 0;
  transition: var(--transition-fast);
}

/* Hero Section */
.hero {
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  position: relative;
  color: var(--color-white);
  padding: 8rem 0 6rem;
  margin-top: 80px;
}

.hero__content {
  position: relative;
  z-index: 2;
  max-width: 800px;
}

.hero__title {
  color: var(--color-white);
  font-size: 3.5rem;
  text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
  margin-bottom: var(--space-md);
  animation: heroTitleAnim 0.8s ease-out forwards;
}

.hero__subtitle {
  font-size: 1.5rem;
  margin-bottom: var(--space-xl);
  text-shadow: 1px 1px 3px rgba(0, 0, 0, 0.5);
  animation: heroSubtitleAnim 0.8s ease-out 0.3s forwards;
  opacity: 0;
  transform: translateY(20px);
}

.hero__buttons {
  display: flex;
  gap: var(--space-md);
  animation: heroButtonsAnim 0.8s ease-out 0.6s forwards;
  opacity: 0;
  transform: translateY(20px);
}

@keyframes heroTitleAnim {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes heroSubtitleAnim {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes heroButtonsAnim {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

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

.about__text {
  order: 1;
}

.about__image {
  order: 2;
  position: relative;
}

.about__image img {
  border: 5px solid var(--color-dark);
  box-shadow: var(--shadow-lg);
  transform: rotate(2deg);
  transition: all var(--transition-medium);
}

.about__image:hover img {
  transform: rotate(-1deg) scale(1.02);
  box-shadow: var(--shadow-xl);
}

/* Mission Section */
.mission {
  background-color: var(--color-dark);
  color: var(--color-white);
}

.mission .section-title {
  color: var(--color-white);
}

.mission__content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-xl);
  align-items: center;
}

.mission__text p {
  color: var(--color-white);
}

.mission__image img {
  border: 5px solid var(--color-white);
  box-shadow: var(--shadow-lg);
  transform: rotate(-2deg);
  transition: all var(--transition-medium);
}

.mission__image:hover img {
  transform: rotate(1deg) scale(1.02);
}

/* History Timeline Section */
.history {
  background-color: var(--color-light);
}

.timeline {
  position: relative;
  max-width: 1000px;
  margin: 0 auto;
}

.timeline:before {
  content: '';
  position: absolute;
  width: 6px;
  background-color: var(--color-primary);
  top: 0;
  bottom: 0;
  left: 50%;
  margin-left: -3px;
  border-radius: 4px;
}

.timeline__item {
  padding: var(--space-xl) 0;
  position: relative;
}

.timeline__content {
  position: relative;
  width: 45%;
  background: var(--color-white);
  padding: var(--space-lg);
  border: 4px solid var(--color-dark);
  box-shadow: var(--shadow-md);
  margin-left: auto;
  transition: all var(--transition-medium);
}

.timeline__item:nth-child(even) .timeline__content {
  margin-left: 0;
  margin-right: auto;
}

.timeline__content:before {
  content: '';
  position: absolute;
  top: 50%;
  right: -20px;
  width: 20px;
  height: 20px;
  background: var(--color-primary);
  transform: translateY(-50%);
  clip-path: polygon(0 0, 0% 100%, 100% 50%);
}

.timeline__item:nth-child(even) .timeline__content:before {
  left: -20px;
  right: auto;
  clip-path: polygon(100% 0, 100% 100%, 0% 50%);
}

.timeline__content:after {
  content: '';
  position: absolute;
  top: 50%;
  right: -44px;
  width: 30px;
  height: 30px;
  background: var(--color-tertiary);
  border-radius: 50%;
  transform: translateY(-50%);
  border: 4px solid var(--color-dark);
  z-index: 1;
}

.timeline__item:nth-child(even) .timeline__content:after {
  left: -44px;
  right: auto;
}

.timeline__content:hover {
  transform: scale(1.02);
  box-shadow: var(--shadow-lg);
}

.timeline__content h3 {
  background-color: var(--color-tertiary);
  color: var(--color-white);
  display: inline-block;
  padding: 5px 15px;
  margin-bottom: var(--space-md);
}

.timeline__content img {
  margin-top: var(--space-md);
  border: 3px solid var(--color-dark);
  display: block;
  margin: var(--space-md) auto 0;
  max-width: 100%;
}

/* Research Section */
.research {
  background-color: var(--color-white);
}

.research__content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-xl);
  align-items: center;
  margin-bottom: var(--space-xl);
}

.research__image img {
  border: 5px solid var(--color-dark);
  box-shadow: var(--shadow-md);
  transition: all var(--transition-medium);
}

.research__image:hover img {
  transform: scale(1.02) perspective(1000px) rotateY(5deg);
  box-shadow: var(--shadow-lg);
}

.research__stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-md);
  margin-top: var(--space-xl);
}

.stat-box {
  background-color: var(--color-primary);
  color: var(--color-white);
  padding: var(--space-lg);
  text-align: center;
  border: 3px solid var(--color-dark);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-fast);
}

.stat-box:nth-child(2) {
  background-color: var(--color-secondary);
}

.stat-box:nth-child(3) {
  background-color: var(--color-tertiary);
}

.stat-box:nth-child(4) {
  background-color: var(--color-quaternary);
}

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

.stat-box h3 {
  font-size: 3rem;
  margin-bottom: var(--space-sm);
  color: var(--color-white);
}

.stat-box p {
  margin-bottom: 0;
}

/* Features/Services Section */
.features {
  background-color: var(--color-dark-medium);
  color: var(--color-white);
}

.features .section-title {
  color: var(--color-white);
}

.feature-slider {
  position: relative;
  overflow: hidden;
}

.feature-slider__track {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.features .card {
  flex: 0 0 calc(33.333% - 2rem);
  margin-right: var(--space-md);
  background-color: var(--color-white);
  border: 4px solid var(--color-dark);
  box-shadow: var(--shadow-md);
  transition: all var(--transition-medium);
  display: flex;
  flex-direction: column;
  color: var(--color-dark);
}

.features .card:hover {
  transform: translateY(-10px);
  box-shadow: var(--shadow-lg);
}

.features .card-image {
  height: 250px;
  overflow: hidden;
  display: flex;
  justify-content: center;
  align-items: center;
}

.features .card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-medium);
}

.features .card:hover .card-image img {
  transform: scale(1.05);
}

.features .card-content {
  padding: var(--space-lg);
  flex-grow: 1;
  display: flex;
  flex-direction: column;
}

.slider-controls {
  display: flex;
  justify-content: center;
  align-items: center;
  margin-top: var(--space-lg);
  gap: var(--space-md);
}

.slider-prev, .slider-next, .carousel-prev, .carousel-next {
  background-color: var(--color-primary);
  border: none;
  color: var(--color-white);
  padding: 0.5rem 1rem;
  cursor: pointer;
  border: 2px solid var(--color-white);
}

.slider-dots, .carousel-dots {
  display: flex;
  gap: 10px;
}

.dot {
  width: 12px;
  height: 12px;
  background-color: var(--color-gray-light);
  border-radius: 50%;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.dot.active {
  background-color: var(--color-primary);
  transform: scale(1.2);
}

/* Projects Section */
.projects {
  background-color: var(--color-light);
}

.projects__step {
  display: grid;
  grid-template-columns: 100px 1fr 1fr;
  gap: var(--space-xl);
  margin-bottom: var(--space-xl);
  align-items: center;
}

.projects__number {
  background-color: var(--color-primary);
  width: 80px;
  height: 80px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-white);
  font-family: var(--font-heading);
  font-size: 2rem;
  border: 4px solid var(--color-dark);
  box-shadow: var(--shadow-sm);
}

.projects__step:nth-child(2) .projects__number {
  background-color: var(--color-secondary);
}

.projects__step:nth-child(3) .projects__number {
  background-color: var(--color-tertiary);
}

.projects__step:nth-child(4) .projects__number {
  background-color: var(--color-quaternary);
}

.projects__image img {
  border: 4px solid var(--color-dark);
  box-shadow: var(--shadow-md);
  transition: all var(--transition-medium);
}

.projects__image:hover img {
  transform: perspective(500px) rotateY(5deg);
  box-shadow: var(--shadow-lg);
}

/* Resources Section */
.resources {
  background-color: var(--color-dark);
  color: var(--color-white);
}

.resources .section-title {
  color: var(--color-white);
}

.resources__intro {
  text-align: center;
  max-width: 800px;
  margin: 0 auto var(--space-xl);
}

.resources__grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
  gap: var(--space-lg);
}

.resource-card {
  background-color: var(--color-dark-medium);
  padding: var(--space-lg);
  border: 3px solid var(--color-primary);
  color: var(--color-white);
  transition: all var(--transition-fast);
  height: 100%;
  display: flex;
  align-items: stretch;
}

.resource-card__inner {
  display: flex;
  flex-direction: column;
  flex: 1;
}

.resource-card:nth-child(2) {
  border-color: var(--color-secondary);
}

.resource-card:nth-child(3) {
  border-color: var(--color-tertiary);
}

.resource-card:nth-child(4) {
  border-color: var(--color-quaternary);
}

.resource-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-md);
  text-decoration: none;
}

.resource-card h3 {
  color: var(--color-white);
  margin-bottom: var(--space-md);
}

.resource-card p {
  color: var(--color-light);
  margin-bottom: 0;
}

/* Case Studies Section */
.case-studies {
  background-color: var(--color-white);
}

.case-studies__carousel {
  position: relative;
  overflow: hidden;
}

.case-studies__track {
  display: flex;
  transition: transform var(--transition-medium);
  will-change: transform;
}

.case-studies .card {
  flex: 0 0 calc(50% - 2rem);
  margin-right: var(--space-md);
  background-color: var(--color-light);
  border: 4px solid var(--color-dark);
  box-shadow: var(--shadow-md);
  transition: all var(--transition-medium);
  display: flex;
  flex-direction: column;
}

.case-studies .card:hover {
  transform: translateY(-10px);
  box-shadow: var(--shadow-lg);
}

.case-studies .card-image {
  height: 250px;
  overflow: hidden;
  display: flex;
  justify-content: center;
  align-items: center;
}

.case-studies .card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-medium);
}

.case-studies .card:hover .card-image img {
  transform: scale(1.05);
}

.case-studies .card-content {
  padding: var(--space-lg);
  flex-grow: 1;
  display: flex;
  flex-direction: column;
}

.case-studies__company {
  color: var(--color-primary);
  font-weight: bold;
  margin-bottom: var(--space-md);
  font-style: italic;
}

.carousel-controls {
  display: flex;
  justify-content: center;
  align-items: center;
  margin-top: var(--space-lg);
  gap: var(--space-md);
}

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

.contact .section-title {
  color: var(--color-white);
}

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

.contact__info h3 {
  color: var(--color-white);
  margin-bottom: var(--space-lg);
}

.contact__details {
  margin-top: var(--space-xl);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-lg);
}

.contact__detail h4 {
  color: var(--color-white);
  margin-bottom: var(--space-sm);
  font-size: 1.2rem;
}

.contact__detail p {
  color: var(--color-light);
}

.contact__form-container {
  background-color: var(--color-white);
  padding: var(--space-xl);
  border: 4px solid var(--color-dark);
  box-shadow: var(--shadow-lg);
}

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

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

.full-width {
  grid-column: 1 / -1;
}

.contact__form label {
  display: block;
  margin-bottom: var(--space-sm);
  font-weight: bold;
  color: var(--color-dark);
}

.contact__form input,
.contact__form textarea,
.contact__form select {
  width: 100%;
  padding: 0.75rem;
  border: 2px solid var(--color-gray);
  background-color: var(--color-light);
  font-family: var(--font-body);
  font-size: 1rem;
  transition: all var(--transition-fast);
}

.contact__form input:focus,
.contact__form textarea:focus,
.contact__form select:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(255, 51, 102, 0.2);
}

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

.footer__content {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: var(--space-xl);
  margin-bottom: var(--space-xl);
}

.footer__info h3 {
  color: var(--color-white);
  margin-bottom: var(--space-md);
}

.footer__info p {
  color: var(--color-light);
}

.footer__nav h4,
.footer__social h4 {
  color: var(--color-white);
  margin-bottom: var(--space-md);
}

.footer__nav ul,
.footer__social ul {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.footer__nav a,
.footer__social a {
  color: var(--color-light);
  transition: all var(--transition-fast);
}

.footer__nav a:hover,
.footer__social a:hover {
  color: var(--color-primary-light);
  text-decoration: none;
  transform: translateX(5px);
  display: inline-block;
}

.footer__social a {
  display: flex;
  align-items: center;
}

.footer__bottom {
  padding-top: var(--space-lg);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  text-align: center;
  color: var(--color-gray-light);
}

/* Success Page */
.success-page {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  min-height: 100vh;
  padding: var(--space-lg);
  background: linear-gradient(135deg, var(--color-primary-light) 0%, var(--color-tertiary-light) 100%);
}

.success-content {
  background-color: var(--color-white);
  padding: var(--space-xl);
  border: 4px solid var(--color-dark);
  box-shadow: var(--shadow-lg);
  max-width: 600px;
  width: 100%;
}

.success-icon {
  font-size: 4rem;
  color: var(--color-secondary);
  margin-bottom: var(--space-md);
}

.success-title {
  color: var(--color-dark);
  margin-bottom: var(--space-md);
}

.success-message {
  margin-bottom: var(--space-lg);
}

/* Privacy & Terms Pages */
.page-content {
  padding-top: 100px;
  max-width: 800px;
  margin: 0 auto;
  padding-bottom: var(--space-xl);
}

.page-title {
  margin-bottom: var(--space-xl);
}

.page-content h3 {
  margin-top: var(--space-xl);
  margin-bottom: var(--space-md);
  color: var(--color-primary-dark);
}

.page-content ul {
  list-style-type: disc;
  margin-left: var(--space-lg);
  margin-bottom: var(--space-lg);
}

.page-content ul li {
  margin-bottom: var(--space-sm);
}

/* Animations */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.fade-in-up {
  animation: fadeInUp 0.8s ease-out forwards;
  opacity: 0;
}

/* Utilities */
.text-center {
  text-align: center;
}

.mb-0 {
  margin-bottom: 0;
}

.mt-lg {
  margin-top: var(--space-lg);
}

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

/* 3D Effects */
.card, 
.about__image img,
.mission__image img,
.projects__image img,
.timeline__content,
.contact__form-container {
  transform-style: preserve-3d;
  perspective: 1000px;
}

/* Media Queries */
@media (max-width: 992px) {
  .container {
    max-width: 100%;
    padding: 0 var(--space-md);
  }
  
  h1 {
    font-size: 2.8rem;
  }
  
  h2 {
    font-size: 2rem;
  }
  
  .about__content,
  .mission__content,
  .research__content,
  .contact__content {
    grid-template-columns: 1fr;
    gap: var(--space-lg);
  }
  
  .about__text {
    order: 2;
  }
  
  .about__image {
    order: 1;
  }
  
  .research__stats {
    grid-template-columns: 1fr 1fr;
  }
  
  .projects__step {
    grid-template-columns: 80px 1fr;
  }
  
  .projects__image {
    grid-column: 1 / -1;
    grid-row: 2;
  }
  
  .footer__content {
    grid-template-columns: 1fr;
    gap: var(--space-lg);
  }
  
  .features .card,
  .case-studies .card {
    flex: 0 0 calc(100% - 2rem);
  }
  
  .timeline:before {
    left: 60px;
  }
  
  .timeline__content {
    width: calc(100% - 90px);
    margin-left: 90px;
  }
  
  .timeline__item:nth-child(even) .timeline__content {
    margin-left: 90px;
    margin-right: 0;
  }
  
  .timeline__content:before {
    left: -20px;
    right: auto;
    clip-path: polygon(100% 0, 100% 100%, 0% 50%);
  }
  
  .timeline__content:after {
    left: -44px;
    right: auto;
  }
}

@media (max-width: 768px) {
  .nav {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    background-color: var(--color-dark);
    z-index: 999;
    padding-top: 100px;
  }
  
  .nav.active {
    display: block;
  }
  
  .nav__list {
    flex-direction: column;
    align-items: center;
  }
  
  .nav__item {
    margin: var(--space-md) 0;
  }
  
  .burger-menu {
    display: block;
  }
  
  .hero__title {
    font-size: 2.5rem;
  }
  
  .hero__subtitle {
    font-size: 1.2rem;
  }
  
  .hero__buttons {
    flex-direction: column;
    gap: var(--space-md);
  }
  
  .research__stats {
    grid-template-columns: 1fr;
  }
  
  .contact__details {
    grid-template-columns: 1fr;
  }
  
  .contact__form {
    grid-template-columns: 1fr;
  }
  
  .footer__content {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 576px) {
  .container {
    padding: 0 var(--space-md);
  }
  
  h1 {
    font-size: 2.2rem;
  }
  
  h2 {
    font-size: 1.8rem;
  }
  
  .section-title {
    margin-bottom: var(--space-lg);
  }
  
  .projects__step {
    grid-template-columns: 1fr;
  }
  
  .projects__number {
    margin-bottom: var(--space-md);
  }
  
  .slider-controls,
  .carousel-controls {
    flex-wrap: wrap;
  }
}

textarea {
  resize: none;
}

.about-history__content,
.about-mission__content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 30px;
}

.team-grid,
.achievements-grid,
.testimonials-grid {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 30px;
}