:root {
  --bg-primary: #050b16;
  --bg-secondary: #0a1426;
  --bg-accent: rgba(13, 60, 112, 0.2);
  --text-primary: #f4f8ff;
  --text-muted: #c0cde3;
  --accent: #0a5071;
  --accent-bright: #ffb400;
  --card-border: rgba(19, 111, 168, 0.4);
  --shadow-soft: 0 24px 48px rgba(4, 9, 23, 0.5);
  --shadow-card: 0 12px 30px rgba(4, 16, 34, 0.45);
  --transition-base: 180ms ease-in-out;
  --container-width: min(1080px, 92vw);
  --white: #ffffff;
  --bg-dark: #050b16;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Work Sans", system-ui, -apple-system, BlinkMacSystemFont,
    "Segoe UI", sans-serif;
  color: var(--text-primary);
  background: radial-gradient(circle at 20% 15%, rgba(14, 82, 128, 0.18),
      transparent 55%),
    linear-gradient(145deg, #050b16, #02060f 55%, #050b16 100%);
  min-height: 100vh;
}

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

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

a:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 4px;
}

.container {
  width: var(--container-width);
  margin: 0 auto;
}

.hero {
  position: relative;
  padding: clamp(4rem, 12vw, 8rem) 0 clamp(4rem, 12vw, 7rem);
  overflow: hidden;
}

.hero::before,
.hero::after {
  content: "";
  position: absolute;
  border-radius: 50%;
  filter: blur(70px);
  opacity: 0.6;
  pointer-events: none;
}

.hero::before {
  width: 420px;
  height: 420px;
  background: rgba(15, 120, 182, 0.28);
  top: -180px;
  left: -160px;
}

.hero::after {
  width: 320px;
  height: 320px;
  background: rgba(255, 180, 0, 0.18);
  bottom: -120px;
  right: -80px;
}

.hero__overlay {
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 30% 20%, rgba(12, 74, 120, 0.4),
      rgba(5, 11, 22, 0.85));
  mix-blend-mode: screen;
  pointer-events: none;
}

.hero__content {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 1.5rem;
}

.language-switch {
  align-self: flex-end;
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  margin-left: auto;
  padding: 0.35rem;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.45);
  background: rgba(255, 255, 255, 0.12);
  backdrop-filter: blur(6px);
}

.language-option {
  border: none;
  background: transparent;
  color: var(--white);
  font-family: inherit;
  font-size: 0.8rem;
  font-weight: 600;
  padding: 0.3rem 0.9rem;
  border-radius: 999px;
  cursor: pointer;
  transition: background 0.2s ease, color 0.2s ease, transform 0.2s ease;
}

.language-option:hover,
.language-option:focus-visible {
  background: rgba(255, 255, 255, 0.22);
  outline: none;
}

.language-option.is-active {
  background: var(--white);
  color: var(--bg-dark);
}

.language-option:focus-visible {
  box-shadow: 0 0 0 2px rgba(255, 255, 255, 0.5);
}

.hero__logo {
  width: clamp(220px, 40vw, 360px);
  filter: drop-shadow(0 16px 30px rgba(0, 0, 0, 0.55));
}

.hero__subtitle {
  font-family: "Playfair Display", serif;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin: 0;
}

.hero__headline {
  font-family: "Playfair Display", serif;
  font-size: clamp(2.6rem, 4vw, 3.75rem);
  font-weight: 700;
  line-height: 1.1;
  margin: 0;
  max-width: 20ch;
}

.hero__lead {
  margin: 0;
  font-size: 1.05rem;
  line-height: 1.7;
  max-width: 56ch;
  color: var(--text-muted);
}

.hero__lead strong {
  color: var(--accent-bright);
  font-weight: 600;
}

.hero__cta {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.85rem 1.8rem;
  border-radius: 999px;
  background: linear-gradient(120deg, var(--accent), var(--accent-bright));
  color: #04121f;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  box-shadow: var(--shadow-soft);
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.hero__cta:hover {
  transform: translateY(-2px) scale(1.01);
  box-shadow: 0 18px 40px rgba(13, 88, 138, 0.45);
}

main {
  display: grid;
  gap: clamp(4rem, 10vw, 6rem);
  padding-bottom: clamp(4rem, 12vw, 8rem);
}

.section {
  position: relative;
}

.section::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(145deg, rgba(12, 74, 120, 0.18),
      rgba(12, 74, 120, 0));
  opacity: 0;
  transition: opacity 400ms ease;
  pointer-events: none;
}

.section:hover::before {
  opacity: 1;
}

.section__title {
  font-family: "Playfair Display", serif;
  font-size: clamp(1.8rem, 3vw, 2.4rem);
  margin: 0 0 1.25rem;
}

.section__text {
  margin: 0;
  font-size: 1.05rem;
  line-height: 1.7;
  color: var(--text-muted);
  max-width: 70ch;
}

.section--mission .container,
.section--members .container,
.section--projects .container,
.section--contact .container {
  position: relative;
  z-index: 1;
}

.member-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.75rem;
}

.member-card {
  background: rgba(8, 20, 36, 0.82);
  border: 1px solid var(--card-border);
  border-radius: 24px;
  padding: 2rem;
  box-shadow: var(--shadow-card);
  backdrop-filter: blur(8px);
  transition: transform var(--transition-base), border-color var(--transition-base);
}

.member-card:hover {
  transform: translateY(-6px);
  border-color: rgba(255, 180, 0, 0.55);
}

.member-card__name {
  margin: 0 0 0.25rem;
  font-family: "Playfair Display", serif;
  font-size: 1.6rem;
}

.member-card__role {
  margin: 0 0 1rem;
  color: var(--accent-bright);
  letter-spacing: 0.02em;
  text-transform: uppercase;
  font-size: 0.85rem;
}

.member-card__bio {
  margin: 0 0 1.5rem;
  color: var(--text-muted);
  line-height: 1.6;
}

.member-card__contact {
  font-weight: 600;
  color: var(--accent-bright);
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  transition: color var(--transition-base);
}

.member-card__contact::after {
  content: "→";
  font-size: 0.85rem;
  transform: translateY(-1px);
  transition: transform var(--transition-base);
}

.member-card__contact:hover::after {
  transform: translate(4px, -1px);
}

.project-card {
  display: grid;
  grid-template-columns: minmax(220px, 320px) 1fr;
  gap: clamp(2rem, 5vw, 3rem);
  align-items: center;
  background: rgba(6, 17, 34, 0.9);
  border-radius: 28px;
  border: 1px solid var(--card-border);
  padding: clamp(2rem, 5vw, 3rem);
  box-shadow: var(--shadow-soft);
  backdrop-filter: blur(8px);
}

.project-card__visual {
  padding: 1.5rem;
  border-radius: 20px;
  background: rgba(12, 74, 120, 0.18);
  display: flex;
  align-items: center;
  justify-content: center;
}

.project-card__visual img {
  filter: drop-shadow(0 12px 25px rgba(0, 0, 0, 0.55));
}

.project-card__title {
  margin: 0 0 0.75rem;
  font-family: "Playfair Display", serif;
  font-size: 1.9rem;
}

.project-card__description {
  margin: 0 0 1.5rem;
  line-height: 1.7;
  color: var(--text-muted);
}

.project-card__link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--accent-bright);
  font-weight: 600;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  font-size: 0.85rem;
}

.project-card__link::after {
  content: "↗";
  font-size: 1rem;
  transition: transform var(--transition-base);
}

.project-card__link:hover::after {
  transform: translate(3px, -3px);
}

.contact-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1.5rem;
  margin-top: 2rem;
}

.contact-card {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  padding: 1.5rem;
  border-radius: 18px;
  background: rgba(7, 18, 32, 0.82);
  border: 1px solid transparent;
  transition: transform var(--transition-base), border-color var(--transition-base);
}

.contact-card:hover {
  transform: translateY(-4px);
  border-color: var(--accent);
}

.contact-card__label {
  font-weight: 600;
  color: var(--accent-bright);
  letter-spacing: 0.02em;
}

.contact-card__value {
  color: var(--text-muted);
  font-size: 0.95rem;
}

.footer {
  border-top: 1px solid rgba(12, 74, 120, 0.35);
  padding: 2.5rem 0;
  background: rgba(4, 12, 24, 0.82);
}

.footer__content {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  font-size: 0.9rem;
  color: var(--text-muted);
}

.footer__link {
  color: var(--accent-bright);
  font-weight: 600;
  align-self: flex-start;
}

@media (max-width: 900px) {
  .project-card {
    grid-template-columns: 1fr;
    text-align: left;
  }

  .project-card__visual {
    justify-content: flex-start;
  }
}

@media (max-width: 640px) {
  .hero__content {
    align-items: flex-start;
  }

  .hero__headline {
    font-size: clamp(2.2rem, 8vw, 2.6rem);
  }

  main {
    gap: 3.5rem;
  }

  .project-card {
    padding: 2rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}