:root {
  --bg: #070b07;
  --surface: #0d130d;
  --surface-2: #111911;
  --line: #203020;
  --text: #d7f3d7;
  --muted: #8aaa8a;
  --accent: #5dff8d;
  --accent-soft: rgba(93, 255, 141, 0.24);
  --ok: #5dff8d;
  --shadow: 0 16px 36px rgba(0, 0, 0, 0.35);
  --section-line: rgba(255, 255, 255, 0.04);
  --topbar-line: rgba(93, 255, 141, 0.2);
  --topbar-bg: rgba(7, 11, 7, 0.92);
  --bg-glow-a: rgba(93, 255, 141, 0.08);
  --bg-glow-b: rgba(28, 56, 34, 0.18);
  --hero-grad-start: rgba(12, 18, 12, 0.92);
  --hero-grad-end: rgba(10, 14, 10, 0.92);
  --status-grad-start: rgba(13, 19, 13, 0.95);
  --status-grad-end: rgba(10, 15, 10, 0.95);
  --chip-bg: rgba(255, 255, 255, 0.02);
  --lead-text: #c0e3c0;
  --heading-soft: #d7f3d7;
  --value-text: #d7f3d7;
  --card-text: #b6d7b6;
  --link-text: #c5efc5;
  --photo-bg: #0c120c;
  --radius: 4px;
  --radius-sm: 4px;
}

:root[data-theme="light"] {
  --bg: #f2f9f2;
  --surface: #ffffff;
  --surface-2: #f1faf1;
  --line: #c7ddc7;
  --text: #142314;
  --muted: #496249;
  --accent: #1f9d4f;
  --accent-soft: rgba(31, 157, 79, 0.2);
  --ok: #1f9d4f;
  --shadow: 0 12px 32px rgba(15, 23, 42, 0.1);
  --section-line: rgba(15, 23, 42, 0.08);
  --topbar-line: rgba(15, 23, 42, 0.08);
  --topbar-bg: rgba(242, 249, 242, 0.92);
  --bg-glow-a: rgba(31, 157, 79, 0.12);
  --bg-glow-b: rgba(73, 98, 73, 0.08);
  --hero-grad-start: rgba(255, 255, 255, 0.94);
  --hero-grad-end: rgba(246, 253, 246, 0.94);
  --status-grad-start: rgba(255, 255, 255, 0.96);
  --status-grad-end: rgba(243, 250, 243, 0.96);
  --chip-bg: rgba(15, 23, 42, 0.03);
  --lead-text: #2a452a;
  --heading-soft: #142314;
  --value-text: #142314;
  --card-text: #2a452a;
  --link-text: #1f321f;
  --photo-bg: #e9f4e9;
}

body {
  font-family: "IBM Plex Mono", "SFMono-Regular", Consolas, monospace;
  color: var(--text);
  background:
    radial-gradient(
      1200px 700px at 120% -10%,
      var(--bg-glow-a),
      transparent 60%
    ),
    radial-gradient(900px 600px at -10% 10%, var(--bg-glow-b), transparent 70%),
    var(--bg);
  min-height: 100vh;
  letter-spacing: 0.01em;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background: repeating-linear-gradient(
    to bottom,
    rgba(255, 255, 255, 0.02) 0,
    rgba(255, 255, 255, 0.02) 1px,
    transparent 1px,
    transparent 3px
  );
  opacity: 0.14;
  z-index: 0;
}

main,
.topbar,
.footer {
  position: relative;
  z-index: 1;
}

.container {
  width: min(1140px, 92vw);
  margin-inline: auto;
}

.section {
  padding: 5rem 0;
  border-top: 1px solid var(--section-line);
}

.section h2 {
  font-size: 1.45rem;
  letter-spacing: 0.03em;
  margin-bottom: 1rem;
  font-weight: 500;
}

.section h2::before {
  content: "$ ";
  color: var(--accent);
}

.section-intro {
  color: var(--muted);
  max-width: 72ch;
  margin-bottom: 1.8rem;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 30;
  backdrop-filter: blur(6px);
  border-bottom: 1px solid var(--topbar-line);
  background: var(--topbar-bg);
}

.topbar__inner {
  min-height: 70px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.brand {
  font-family: "IBM Plex Mono", "SFMono-Regular", Consolas, monospace;
  font-size: 0.95rem;
  color: var(--text);
  letter-spacing: 0.02em;
}

.brand::before {
  content: "~/ ";
  color: var(--accent);
}

.nav {
  display: flex;
  align-items: center;
  gap: 1.2rem;
}

.theme-toggle {
  border: 1px solid var(--line);
  background: var(--surface);
  color: var(--text);
  height: 36px;
  padding: 0 0.75rem;
  border-radius: 2px;
  cursor: pointer;
  font-family: "IBM Plex Mono", "SFMono-Regular", Consolas, monospace;
  font-size: 0.75rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  transition:
    border-color 160ms ease,
    color 160ms ease;
}

.theme-toggle:hover,
.theme-toggle:focus-visible {
  color: var(--accent);
  border-color: var(--accent);
}

.nav a,
.mobile-menu a {
  color: var(--muted);
  font-size: 0.95rem;
  transition: color 160ms ease;
}

.nav a:hover,
.nav a:focus-visible,
.mobile-menu a:hover,
.mobile-menu a:focus-visible,
.contact-box a:hover,
.contact-box a:focus-visible {
  color: var(--accent);
}

.menu-toggle {
  display: none;
  background: transparent;
  border: 1px solid var(--line);
  border-radius: 2px;
  width: 42px;
  height: 36px;
  padding: 0;
  cursor: pointer;
}

.menu-toggle span {
  display: block;
  width: 18px;
  height: 2px;
  margin: 7px auto;
  background: var(--text);
}

.mobile-menu {
  display: none;
  border-top: 1px solid var(--line);
  background: var(--surface);
  padding: 0.5rem 4vw 1rem;
}

.mobile-menu.is-open {
  display: grid;
  gap: 0.65rem;
}

.hero__grid {
  display: grid;
  grid-template-columns: 1.45fr 1fr;
  gap: 1.3rem;
}

.hero__content {
  background: linear-gradient(
    180deg,
    var(--hero-grad-start),
    var(--hero-grad-end)
  );
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 2.2rem;
  box-shadow: var(--shadow);
}

.hero__content::before,
.status-panel::before,
.card::before,
.stack-card::before,
.contact-box::before,
.principles::before {
  content: "terminal";
  display: block;
  margin: -0.2rem -0.2rem 0.9rem;
  padding: 0.2rem 0.45rem;
  border-bottom: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.hero__headline {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
}

.eyebrow {
  font-family: "IBM Plex Mono", "SFMono-Regular", Consolas, monospace;
  color: var(--accent);
  font-size: 0.8rem;
  text-transform: none;
  letter-spacing: 0.1em;
  margin-bottom: 0.7rem;
}

.eyebrow::before {
  content: "user@portfolio:~$ ";
}

.hero-photo {
  flex: 0 0 auto;
  width: 160px;
  text-align: center;
}

.hero-photo img {
  width: 160px;
  height: 160px;
  object-fit: cover;
  border-radius: 2px;
  border: 1px solid var(--line);
  background: var(--photo-bg);
}

.hero-photo figcaption {
  margin-top: 0.45rem;
  font-family: "IBM Plex Mono", "SFMono-Regular", Consolas, monospace;
  font-size: 0.7rem;
  color: var(--muted);
  line-height: 1.35;
}

.hero h1 {
  font-size: clamp(2rem, 4.2vw, 3rem);
  line-height: 1.12;
  margin-bottom: 0.9rem;
}

.lead {
  color: var(--lead-text);
  max-width: 65ch;
  font-size: 1.02rem;
}

.hero__chips {
  margin-top: 1.4rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.chip {
  font-family: "IBM Plex Mono", "SFMono-Regular", Consolas, monospace;
  font-size: 0.78rem;
  letter-spacing: 0.03em;
  color: var(--value-text);
  border: 1px solid var(--line);
  background: var(--chip-bg);
  border-radius: 2px;
  padding: 0.35rem 0.65rem;
}

.chip::before {
  content: "# ";
  color: var(--accent);
}

.status-panel {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: linear-gradient(
    180deg,
    var(--status-grad-start),
    var(--status-grad-end)
  );
  padding: 1.35rem;
}

.status-panel h2 {
  margin: 0 0 0.9rem;
  font-size: 1rem;
  color: var(--heading-soft);
}

.status-panel ul {
  display: grid;
  gap: 0.8rem;
}

.status-panel li {
  display: grid;
  gap: 0.2rem;
  padding-bottom: 0.8rem;
  border-bottom: 1px dashed var(--line);
}

.status-panel li:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.label {
  font-family: "IBM Plex Mono", "SFMono-Regular", Consolas, monospace;
  font-size: 0.73rem;
  color: var(--muted);
  letter-spacing: 0.08em;
  text-transform: lowercase;
}

.label::before {
  content: "-- ";
}

.value {
  color: var(--value-text);
  font-size: 0.92rem;
}

.is-ok {
  color: var(--ok);
}

.about-grid,
.stack-grid,
.project-grid {
  display: grid;
  gap: 1rem;
}

.about-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.card,
.stack-card,
.project-card,
.contact-box,
.principles {
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: var(--surface);
}

.card,
.stack-card,
.project-card {
  padding: 1.1rem;
  transition:
    border-color 160ms ease,
    transform 160ms ease;
}

.card:hover,
.stack-card:hover,
.project-card:hover {
  border-color: var(--accent);
  transform: translateY(-1px);
}

.card h3,
.stack-card h3,
.project-card h3 {
  font-size: 1rem;
  margin-bottom: 0.5rem;
  font-weight: 500;
}

.card h3::before,
.stack-card h3::before,
.project-card h3::before {
  content: "> ";
  color: var(--accent);
}

.card p,
.project-card p {
  color: var(--card-text);
  font-size: 0.95rem;
}

.stack-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.stack-card ul {
  display: grid;
  gap: 0.45rem;
}

.stack-card li {
  font-family: "IBM Plex Mono", "SFMono-Regular", Consolas, monospace;
  font-size: 0.82rem;
  color: var(--value-text);
  border-left: 1px solid var(--accent-soft);
  padding-left: 0.5rem;
}

.project-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.principles {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.7rem;
  padding: 1.1rem;
}

.principles li {
  font-family: "IBM Plex Mono", "SFMono-Regular", Consolas, monospace;
  color: var(--value-text);
  font-size: 0.8rem;
  border: 1px solid var(--line);
  border-radius: 2px;
  padding: 0.55rem 0.65rem;
  background: var(--surface-2);
}

.contact-box {
  display: flex;
  flex-wrap: wrap;
  gap: 1.1rem;
  padding: 1.2rem;
}

.contact-box a {
  color: var(--link-text);
  font-family: "IBM Plex Mono", "SFMono-Regular", Consolas, monospace;
  font-size: 0.85rem;
  transition: color 160ms ease;
}

.contact-box a::before {
  content: "$ ";
  color: var(--accent);
}

.status-panel .value a {
  color: var(--accent);
}

.footer {
  border-top: 1px solid var(--section-line);
  padding: 1.2rem 0 1.6rem;
}

.footer__inner p {
  color: var(--muted);
  font-size: 0.86rem;
}

/* Light reveal for key sections; disabled when user prefers reduced motion */
.reveal {
  opacity: 0;
  transform: translateY(8px);
  transition:
    opacity 260ms ease,
    transform 260ms ease;
}

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

@media (prefers-reduced-motion: reduce) {
  .reveal,
  .reveal.is-visible,
  .card,
  .stack-card,
  .project-card {
    transition: none;
    transform: none;
    opacity: 1;
  }
}