:root {
  --color-bg: #000;
  --color-text: #ddd;
  --color-accent: #00e676;
}
* {
  box-sizing: border-box;
}
body {
  margin: 0;
  font-family: 'Roboto', sans-serif;
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
}
h1, h2, h3 {
  font-family: 'Bebas Neue', sans-serif;
  letter-spacing: 1px;
  margin-top: 0.5em;
  margin-bottom: 0.5em;
  color: #fff;
}
p, li {
  font-size: 1rem;
}
a {
  color: var(--color-accent);
  text-decoration: none;
}
a:hover {
  text-decoration: underline;
}
nav {
  background: #000;
  color: #fff;
  padding: 0.5rem 1rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: relative;
  z-index: 1000;
}
.logo {
  font-size: 1.5rem;
  color: #fff;
  text-decoration: none;
}
.nav-menu {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
}
.nav-menu li {
  margin: 0 0.75rem;
}
.nav-menu li a {
  font-family: 'Bebas Neue', sans-serif;
  color: #fff;
  text-decoration: none;
  padding: 0.25rem;
}
.nav-menu li a:hover {
  color: var(--color-accent);
}
.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
}
.nav-toggle:focus {
  outline: 2px solid var(--color-accent);
}
.nav-toggle span {
  display: block;
  width: 25px;
  height: 3px;
  margin: 5px;
  background: #fff;
  transition: 0.3s;
}
@media (max-width: 768px) {
  .nav-menu {
    display: none;
    flex-direction: column;
    background: rgba(0, 0, 0, 0.9);
    position: absolute;
    top: 60px;
    right: 1rem;
    padding: 1rem 2rem;
    border: 1px solid #444;
    border-radius: 4px;
  }
  .nav-menu.open {
    display: flex;
  }
  .nav-menu li {
    margin: 0.5rem 0;
  }
  .nav-toggle {
    display: block;
    position: relative;
    z-index: 1000;
  }
}
.hero-video {
  position: relative;
  width: 100%;
  height: 100vh;
  overflow: hidden;
}
.hero-video video {
  position: absolute;
  top: 50%;
  left: 50%;
  min-width: 100%;
  min-height: 100%;
  transform: translate(-50%, -50%);
  object-fit: cover;
}
.hero-overlay {
  --hero-font-size: clamp(2rem, 6vw, 5rem);
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  padding: 0 1rem;
}
.hero-overlay .thalos-logo {
  width: calc(var(--hero-font-size) * 3);
  height: calc(var(--hero-font-size) * 3);
  object-fit: contain;
  margin-bottom: 1rem;
}
.hero-overlay h1 {
  font-size: var(--hero-font-size);
  color: #fff;
}
.hero-overlay .cta-button {
  margin-top: 1.5rem;
}
.page-header {
  position: relative;
  text-align: center;
  padding: 4rem 1rem 3rem;
  color: #fff;
}
.page-header h1 {
  font-size: 2.5rem;
}
.page-header p {
  font-size: 1.2rem;
  margin: 0.5rem 0;
}
.page-header::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.5);
  z-index: 0;
}
.page-header * {
  position: relative;
  z-index: 1;
}
.about-header {
  background: url('images/about-hero.jpg') no-repeat center center;
  background-size: cover;
}
.science-header {
  background: url('images/science-banner.jpg') no-repeat center center;
  background-size: cover;
}
main.content {
  max-width: 1000px;
  margin: 0 auto;
  padding: 2rem 1rem;
}
section {
  margin-bottom: 3rem;
}
section h2 {
  font-size: 1.8rem;
  margin-bottom: 1rem;
  color: #fff;
}
section p {
  margin-bottom: 1rem;
}
.technologies ul {
  list-style: disc;
  padding-left: 1.2rem;
}
.technologies li {
  margin: 0.5rem 0;
}
.technologies li::marker {
  color: var(--color-accent);
  font-size: 1.2em;
}
.data-list {
  list-style: disc;
  padding-left: 1.2rem;
  margin: 1rem 0;
  columns: 2;
  column-gap: 2rem;
}
.data-list li {
  margin: 0.5rem 0;
  break-inside: avoid;
}
.data-list li::marker {
  color: var(--color-accent);
}
.team-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 2rem;
  justify-items: center;
  padding: 1rem 0;
}
.team-member {
  text-align: center;
}
.team-member img {
  width: 150px;
  height: 150px;
  object-fit: cover;
  border-radius: 50%;
  border: 3px solid var(--color-accent);
  margin-bottom: 0.5rem;
}
.team-member h3 {
  font-size: 1.2rem;
  margin: 0.5rem 0 0.2rem;
}
.team-member p {
  margin: 0.2rem 0;
  font-size: 0.95rem;
}
.team-member a {
  color: var(--color-accent);
}
.team-member a:hover {
  text-decoration: underline;
}
.contacts-list {
  list-style: none;
  padding: 0;
}
.contacts-list li {
  margin: 0.5rem 0;
}
.contacts-list a {
  color: var(--color-accent);
}
.contacts-list a:hover {
  text-decoration: underline;
}
.cta-button {
  display: inline-block;
  background: var(--color-accent);
  color: #000;
  font-family: 'Bebas Neue', sans-serif;
  text-transform: uppercase;
  padding: 0.75rem 1.5rem;
  font-size: 1.1rem;
  border: none;
  border-radius: 4px;
  cursor: pointer;
  transition: background 0.3s;
}
.cta-button:hover {
  background: #00ff7e;
  color: #000;
}
footer {
  text-align: center;
  padding: 1rem;
  background: #000;
  color: #666;
  font-size: 0.9rem;
}

.quote {
  text-align: center;
  font-style: italic;
  margin: 2rem auto;
  max-width: 800px;
  color: #ccc;
}