:root {
  --bg: #060d16;
  --bg-elevated: #0b1622;
  --bg-elevated-2: #0f1e2c;
  --border: rgba(148, 197, 205, 0.16);
  --border-strong: rgba(148, 197, 205, 0.32);
  --text: #e9f2f4;
  --text-muted: #8fa6b3;
  --accent: #2dd4bf;
  --accent-soft: #7dd3fc;
  --glow: rgba(45, 212, 191, 0.35);
  --max-width: 1120px;
  --font-body: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-display: "Space Grotesk", var(--font-body);
  --font-mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--text);
  background: var(--bg);
  line-height: 1.6;
  background-image: radial-gradient(rgba(125, 211, 252, 0.06) 1px, transparent 1px);
  background-size: 26px 26px;
}

::selection {
  background: rgba(45, 212, 191, 0.35);
  color: #fff;
}

::-webkit-scrollbar {
  width: 10px;
}

::-webkit-scrollbar-track {
  background: var(--bg);
}

::-webkit-scrollbar-thumb {
  background: var(--bg-elevated-2);
  border-radius: 6px;
  border: 1px solid var(--border);
}

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.5rem;
}

h1, h2, h3, .logo {
  font-family: var(--font-display);
  letter-spacing: -0.01em;
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(6, 13, 22, 0.7);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid transparent;
  transition: background 0.3s ease, border-color 0.3s ease;
}

.site-header.is-scrolled {
  background: rgba(6, 13, 22, 0.92);
  border-bottom-color: var(--border);
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 1rem;
  padding-bottom: 1rem;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-weight: 600;
  font-size: 1.15rem;
  color: var(--text);
  text-decoration: none;
}

.logo__mark {
  width: 30px;
  height: 30px;
  color: var(--accent);
  flex-shrink: 0;
}

.site-header nav ul {
  list-style: none;
  display: flex;
  gap: 2rem;
  margin: 0;
  padding: 0;
}

.site-header nav a {
  position: relative;
  text-decoration: none;
  color: var(--text-muted);
  font-weight: 500;
  font-size: 0.95rem;
  padding-bottom: 4px;
  transition: color 0.2s ease;
}

.site-header nav a:hover {
  color: var(--text);
}

.site-header nav a.active {
  color: var(--accent);
}

.site-header nav a.active::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -1px;
  height: 2px;
  background: var(--accent);
  box-shadow: 0 0 8px var(--glow);
  border-radius: 2px;
}

/* Hero */
.hero {
  position: relative;
  padding: 7rem 0 8rem;
  text-align: center;
  overflow: hidden;
  isolation: isolate;
}

.hero--page {
  padding: 5rem 0 6.5rem;
}

.hero::before,
.hero::after {
  content: "";
  position: absolute;
  z-index: -1;
  border-radius: 50%;
  filter: blur(70px);
  opacity: 0.35;
}

.hero::before {
  width: 480px;
  height: 480px;
  background: var(--accent);
  top: -220px;
  left: 50%;
  transform: translateX(-70%);
}

.hero::after {
  width: 360px;
  height: 360px;
  background: var(--accent-soft);
  top: -140px;
  left: 50%;
  transform: translateX(20%);
  opacity: 0.2;
}

.hero__content {
  position: relative;
  z-index: 1;
  max-width: 760px;
}

.eyebrow,
.section-eyebrow {
  font-family: var(--font-mono);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 0.78rem;
  font-weight: 500;
  color: var(--accent);
  margin: 0 0 0.9rem;
}

.hero h1 {
  font-size: 2.75rem;
  line-height: 1.15;
  margin-bottom: 1.1rem;
}

.hero__lede {
  font-size: 1.15rem;
  margin-bottom: 2.25rem;
  color: var(--text-muted);
}

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

/* Animated wave-trace divider */
.wave-divider {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 64px;
  display: flex;
  width: 200%;
  color: var(--accent);
  filter: drop-shadow(0 0 6px var(--glow));
}

.wave-divider__track {
  width: 50%;
  height: 100%;
  flex-shrink: 0;
  display: block;
}

.wave-divider__track path {
  fill: none;
  stroke: currentColor;
  stroke-width: 1.5;
  stroke-linecap: round;
}

@media (prefers-reduced-motion: no-preference) {
  .wave-divider {
    animation: wave-scroll 16s linear infinite;
  }
}

@keyframes wave-scroll {
  from { transform: translateX(0); }
  to { transform: translateX(-50%); }
}

/* Buttons */
.btn {
  display: inline-block;
  padding: 0.8rem 1.85rem;
  border-radius: 6px;
  text-decoration: none;
  font-weight: 600;
  font-size: 0.98rem;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform 0.15s ease, box-shadow 0.15s ease, background 0.15s ease, border-color 0.15s ease;
}

.btn:hover {
  transform: translateY(-1px);
}

.btn--primary,
.btn--light {
  background: var(--accent);
  color: #04211d;
  box-shadow: 0 0 0 rgba(45, 212, 191, 0);
}

.btn--primary:hover,
.btn--light:hover {
  box-shadow: 0 6px 24px var(--glow);
}

.btn--outline {
  background: transparent;
  color: var(--text);
  border-color: var(--border-strong);
}

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

/* Sections */
.section {
  padding: 5rem 0;
}

.section.alt {
  background: var(--bg-elevated);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.section h2 {
  font-size: 2rem;
  margin-top: 0;
  margin-bottom: 1.5rem;
  color: var(--text);
}

.prose {
  max-width: 70ch;
  font-size: 1.05rem;
  color: var(--text-muted);
}

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

.card {
  position: relative;
  background: var(--bg-elevated-2);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 1.75rem;
  overflow: hidden;
  transition: transform 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
}

.card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--accent), transparent);
  opacity: 0.6;
}

.card:hover {
  transform: translateY(-4px);
  border-color: var(--border-strong);
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.35);
}

.card__index {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--accent);
  margin-bottom: 0.75rem;
  opacity: 0.85;
}

.card h3 {
  margin-top: 0;
  color: var(--text);
}

.card p {
  color: var(--text-muted);
  margin-bottom: 0;
}

/* Value strip (Home) */
.value-strip {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.5rem;
}

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

.value-item__mark {
  font-family: var(--font-mono);
  font-weight: 500;
  color: var(--accent);
  border: 1px solid var(--border-strong);
  border-radius: 50%;
  width: 2.25rem;
  height: 2.25rem;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.8rem;
}

.value-item p {
  margin: 0;
  padding-top: 0.35rem;
  color: var(--text-muted);
}

/* CTA banner */
.cta-banner {
  background: linear-gradient(135deg, var(--bg-elevated), var(--bg-elevated-2));
  border-top: 1px solid var(--border);
  padding: 4rem 0;
  text-align: center;
}

.cta-banner h2 {
  margin: 0 0 0.5rem;
  color: var(--text);
}

.cta-banner p {
  margin: 0 0 1.5rem;
  color: var(--text-muted);
}

/* Team page */
.team-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1.5rem;
}

.team-card {
  background: var(--bg-elevated-2);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 1.85rem;
  text-align: center;
  transition: transform 0.2s ease, border-color 0.2s ease;
}

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

.team-card__avatar {
  width: 4rem;
  height: 4rem;
  margin: 0 auto 1rem;
  border-radius: 50%;
  background: var(--bg);
  border: 1px solid var(--border-strong);
  color: var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-mono);
  font-weight: 500;
  font-size: 1.05rem;
}

.team-card h3 {
  margin: 0 0 0.25rem;
  color: var(--text);
}

.team-card__role {
  font-weight: 600;
  margin: 0 0 0.25rem;
  color: var(--accent-soft);
  font-size: 0.95rem;
}

.team-card__degree {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--text-muted);
  margin: 0 0 0.9rem;
}

.team-card__bio {
  font-size: 0.95rem;
  margin: 0;
  text-align: left;
  color: var(--text-muted);
}

/* About page */
.process-steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.5rem;
}

.process-step {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 1.75rem;
  transition: transform 0.2s ease, border-color 0.2s ease;
}

.process-step:hover {
  transform: translateY(-4px);
  border-color: var(--border-strong);
}

.process-step__num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.35rem;
  height: 2.35rem;
  border-radius: 50%;
  font-family: var(--font-mono);
  border: 1px solid var(--border-strong);
  color: var(--accent);
  font-weight: 500;
  margin-bottom: 0.9rem;
}

.process-step h3 {
  margin: 0 0 0.5rem;
  color: var(--text);
}

.process-step p {
  margin: 0;
  color: var(--text-muted);
}

.values-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.5rem;
}

.value-card {
  padding: 1.6rem;
  border-left: 2px solid var(--accent);
  background: var(--bg-elevated-2);
  border-radius: 0 10px 10px 0;
  transition: transform 0.2s ease;
}

.value-card:hover {
  transform: translateX(4px);
}

.value-card h3 {
  margin: 0 0 0.5rem;
  color: var(--text);
}

.value-card p {
  margin: 0;
  color: var(--text-muted);
}

/* Contact page */
.contact-grid {
  display: grid;
  grid-template-columns: minmax(220px, 1fr) minmax(280px, 1.5fr);
  gap: 3rem;
}

.contact-details h2 {
  color: var(--text);
}

.contact-list {
  margin: 1.5rem 0 0;
}

.contact-list div {
  margin-bottom: 1.25rem;
}

.contact-list dt {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
  margin-bottom: 0.2rem;
}

.contact-list dd {
  margin: 0;
  font-size: 1.05rem;
  color: var(--text);
}

.contact-list a {
  color: var(--accent);
  text-decoration: none;
}

.contact-list a:hover {
  text-decoration: underline;
}

.contact-form {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  background: var(--bg-elevated-2);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 1.75rem;
}

.contact-form label {
  font-family: var(--font-mono);
  font-weight: 500;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
  margin-top: 0.85rem;
}

.contact-form input,
.contact-form textarea {
  font: inherit;
  padding: 0.65rem 0.8rem;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text);
}

.contact-form input:focus,
.contact-form textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(45, 212, 191, 0.15);
}

.contact-form button {
  margin-top: 1.35rem;
  align-self: flex-start;
}

.contact-form__note {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-top: 0.85rem;
}

@media (max-width: 720px) {
  .contact-grid {
    grid-template-columns: 1fr;
  }
}

/* Scroll reveal */
.reveal {
  opacity: 0;
  transform: translateY(22px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* Footer */
.site-footer {
  border-top: 1px solid var(--border);
  padding: 2.5rem 0;
  text-align: center;
  font-size: 0.85rem;
  color: var(--text-muted);
}

@media (max-width: 640px) {
  .site-header .container {
    flex-direction: column;
    gap: 0.75rem;
  }

  .site-header nav ul {
    gap: 1.25rem;
  }

  .hero h1 {
    font-size: 2rem;
  }
}