:root {
  --color-bg: #060907;
  --color-bg-alt: #0d120e;
  --color-text: #e8f0ea;
  --color-text-muted: #5a6862;
  --color-accent: #00ff9d;
  --color-accent-dim: #00ff9d33;
  --color-border: #1a221d;

  --font-heading: "Space Grotesk", system-ui, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, SFMono-Regular, monospace;

  --container-width: 1100px;
  --radius: 4px;
  --transition: 0.2s ease;

  --grid-size: 48px;
}

body {
  background: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-mono);
  position: relative;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -2;
  background-image:
    linear-gradient(var(--color-border) 1px, transparent 1px),
    linear-gradient(90deg, var(--color-border) 1px, transparent 1px);
  background-size: var(--grid-size) var(--grid-size);
  opacity: 0.4;
}

body::after {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background: repeating-linear-gradient(
    0deg,
    rgba(255, 255, 255, 0.02) 0px,
    rgba(255, 255, 255, 0.02) 1px,
    transparent 1px,
    transparent 3px
  );
}

#bg3d {
  position: fixed;
  inset: 0;
  z-index: -3;
  display: block;
}

.container {
  width: 100%;
  max-width: var(--container-width);
  margin-inline: auto;
  padding-inline: 1.5rem;
}

.tag {
  display: inline-block;
  font-size: 0.75rem;
  color: var(--color-accent);
  border: 1px solid var(--color-accent-dim);
  border-radius: var(--radius);
  padding: 0.1rem 0.4rem;
  background: rgba(0, 255, 157, 0.05);
}

/* Header / Nav */

.site-header {
  position: sticky;
  top: 0;
  background: rgba(6, 9, 7, 0.85);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--color-border);
  z-index: 10;
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-block: 1rem;
}

.nav__brand {
  font-weight: 700;
  font-size: 1rem;
  color: var(--color-text);
}

.nav__cursor {
  color: var(--color-accent);
  animation: blink 1.1s steps(1) infinite;
}

.nav__links {
  display: flex;
  gap: 2rem;
}

.nav__idx {
  color: var(--color-accent);
  margin-right: 0.35rem;
}

.nav__links a:hover {
  color: var(--color-accent);
}

.nav__toggle {
  display: none;
  flex-direction: column;
  gap: 4px;
}

.nav__toggle span {
  width: 22px;
  height: 2px;
  background: var(--color-text);
}

@media (max-width: 720px) {
  .nav__toggle {
    display: flex;
  }

  .nav__links {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    background: var(--color-bg-alt);
    padding: 1rem 1.5rem;
    gap: 1rem;
    display: none;
  }

  .nav__links.is-open {
    display: flex;
  }
}

/* Hero */

.hero {
  padding-block: 6rem 4rem;
}

.hero__eyebrow {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  color: var(--color-text-muted);
  font-size: 0.9rem;
  margin-bottom: 1.5rem;
}

.hero__prompt {
  color: var(--color-accent);
}

.hero__title {
  font-family: var(--font-heading);
  font-size: clamp(2.2rem, 6vw, 4rem);
  font-weight: 700;
  line-height: 1.1;
  margin-bottom: 0.75rem;
}

.hero__role {
  font-size: 1.2rem;
  color: var(--color-accent);
  margin-bottom: 1.25rem;
  min-height: 1.5em;
}

.hero__cursor {
  animation: blink 1.1s steps(1) infinite;
}

.hero__subtitle {
  color: var(--color-text-muted);
  max-width: 60ch;
  font-size: 1.05rem;
  margin-bottom: 2rem;
}

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

@keyframes blink {
  0%, 49% { opacity: 1; }
  50%, 100% { opacity: 0; }
}

.btn {
  display: inline-block;
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius);
  font-family: var(--font-mono);
  font-weight: 500;
  border: 1px solid var(--color-accent-dim);
  transition: background var(--transition), color var(--transition), box-shadow var(--transition);
}

.btn--primary {
  background: var(--color-accent);
  color: #04140c;
}

.btn--primary:hover {
  box-shadow: 0 0 16px var(--color-accent);
}

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

.btn--ghost:hover {
  background: rgba(0, 255, 157, 0.08);
}

/* Sections */

section {
  padding-block: 4rem;
}

.section__title {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 2.5rem;
  color: var(--color-text-muted);
}

.section__idx {
  color: var(--color-accent);
}

/* Experience timeline */

.timeline {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.timeline__item {
  border-left: 2px solid var(--color-border);
  padding-left: 1.5rem;
  position: relative;
}

.timeline__item::before {
  content: "";
  position: absolute;
  left: -5px;
  top: 0.35rem;
  width: 8px;
  height: 8px;
  background: var(--color-accent);
  border-radius: 50%;
  box-shadow: 0 0 8px var(--color-accent);
}

.timeline__date {
  color: var(--color-accent);
  font-size: 0.85rem;
}

.timeline__role {
  font-family: var(--font-heading);
  font-size: 1.1rem;
  font-weight: 700;
  margin-top: 0.25rem;
  color: var(--color-text);
}

.timeline__org {
  color: var(--color-text-muted);
  font-size: 0.9rem;
  margin-bottom: 0.5rem;
}

.timeline__desc {
  color: var(--color-text-muted);
}

/* Projects */

.projects__group + .projects__group {
  margin-top: 3rem;
}

.projects__subtitle {
  font-size: 1rem;
  color: var(--color-accent);
  margin-bottom: 1.25rem;
}

.projects__grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 1.5rem;
}

.project-card {
  display: block;
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  position: relative;
  transition: transform var(--transition), border-color var(--transition), box-shadow var(--transition);
}

.project-card:hover {
  transform: translateY(-4px);
  border-color: var(--color-accent);
  box-shadow: 0 0 20px rgba(0, 255, 157, 0.15);
}

.project-card::before,
.project-card::after {
  content: "";
  position: absolute;
  width: 10px;
  height: 10px;
  border: 1px solid var(--color-accent-dim);
  opacity: 0;
  transition: opacity var(--transition);
}

.project-card::before {
  top: -1px;
  left: -1px;
  border-right: none;
  border-bottom: none;
}

.project-card::after {
  bottom: -1px;
  right: -1px;
  border-left: none;
  border-top: none;
}

.project-card:hover::before,
.project-card:hover::after {
  opacity: 1;
}

.project-card__head {
  display: flex;
  gap: 0.4rem;
  padding: 0.6rem 0.8rem;
  border-bottom: 1px solid var(--color-border);
}

.project-card__dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-border);
}

.project-card__body {
  padding: 1.25rem;
}

.project-card__title {
  font-family: var(--font-heading);
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
  color: var(--color-text);
}

.project-card__desc {
  color: var(--color-text-muted);
  font-size: 0.9rem;
  margin-bottom: 1rem;
}

.project-card__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.project-card__tag {
  font-size: 0.7rem;
  color: var(--color-accent);
  border: 1px solid var(--color-accent-dim);
  border-radius: var(--radius);
  padding: 0.15rem 0.5rem;
}

/* Contact */

.contact__form {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  max-width: 480px;
}

.contact__form label {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.label__tag {
  font-size: 0.8rem;
  color: var(--color-accent);
}

.label__tag::before {
  content: "> ";
}

.contact__form input,
.contact__form textarea {
  background: transparent;
  border: none;
  border-bottom: 1px solid var(--color-border);
  padding: 0.5rem 0.2rem;
  color: var(--color-text);
  font-family: var(--font-mono);
}

.contact__form input:focus,
.contact__form textarea:focus {
  outline: none;
  border-bottom-color: var(--color-accent);
}

/* Footer */

.site-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-block: 2rem;
  border-top: 1px solid var(--color-border);
  color: var(--color-text-muted);
  font-size: 0.85rem;
  flex-wrap: wrap;
  gap: 1rem;
}

.site-footer__status {
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.social-links {
  display: flex;
  gap: 1.5rem;
}

.social-links a:hover {
  color: var(--color-accent);
}

/* Scroll-reveal (toggled by main.js via GSAP) */

.reveal {
  opacity: 0;
  transform: translateY(24px);
}

@media (prefers-reduced-motion: reduce) {
  .nav__cursor,
  .hero__cursor {
    animation: none;
  }

  .reveal {
    opacity: 1;
    transform: none;
  }
}