/* THEME VARIABLES */
:root {
  --bg: #fafaf8;
  --bg-elevated: #ffffff;
  --text-primary: #1a1a18;
  --text-secondary: #55534c;
  --text-muted: #8a887e;
  --accent: #b5462f;
  --rule: #e5e3db;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #131311;
    --bg-elevated: #1a1a17;
    --text-primary: #f2f1ea;
    --text-secondary: #b8b6ab;
    --text-muted: #7d7b70;
    --accent: #e08a6f;
    --rule: #2c2b26;
  }
}

:root[data-theme="dark"] {
  --bg: #131311;
  --bg-elevated: #1a1a17;
  --text-primary: #f2f1ea;
  --text-secondary: #b8b6ab;
  --text-muted: #7d7b70;
  --accent: #e08a6f;
  --rule: #2c2b26;
}

/* GLOBAL RESET */
* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  background: var(--bg);
  color: var(--text-primary);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--text-primary);
  text-decoration: underline;
  text-decoration-color: var(--rule);
  text-underline-offset: 3px;
  transition: text-decoration-color 0.15s ease, color 0.15s ease;
}
a:hover { text-decoration-color: var(--accent); color: var(--accent); }
a:focus-visible,
button:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

.visually-hidden {
  position: absolute;
  left: -9999px;
}

/* PAGE SHELL */
.page {
  max-width: 720px;
  margin: 0 auto;
  padding: 0 1.5rem 6rem;
}

/* HEADER */
.header {
  padding: 4rem 0 2.5rem;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 1.25rem;
}

.header .avatar {
  width: 72px;
  height: 72px;
  border-radius: 50%;
  object-fit: cover;
}

.header h1 {
  font-size: 1.7rem;
  font-weight: 600;
  letter-spacing: -0.01em;
}

.header .role {
  color: var(--text-secondary);
  font-size: 1rem;
  margin-top: 0.35rem;
}

.header .location {
  color: var(--text-muted);
  font-size: 0.88rem;
  margin-top: 0.2rem;
}

.contact-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem 1rem;
  font-size: 0.88rem;
  color: var(--text-secondary);
}
.contact-links a { color: var(--text-secondary); }
.contact-links a:hover { color: var(--accent); }

/* NAV */
.site-nav {
  position: sticky;
  top: 0;
  z-index: 20;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--rule);
}
.site-nav ul {
  max-width: 720px;
  margin: 0 auto;
  padding: 0 1.5rem;
  display: flex;
  gap: 1.5rem;
  list-style: none;
  overflow-x: auto;
}
.site-nav a {
  display: inline-block;
  padding: 0.9rem 0 0.75rem;
  font-size: 0.86rem;
  color: var(--text-secondary);
  text-decoration: none;
  white-space: nowrap;
  border-bottom: 2px solid transparent;
}
.site-nav a:hover,
.site-nav a.active {
  color: var(--text-primary);
  border-bottom-color: var(--accent);
}

/* SECTIONS */
section {
  padding: 2.75rem 0;
  border-top: 1px solid var(--rule);
  scroll-margin-top: 3.5rem;
}
section:first-of-type { border-top: none; }

section h2 {
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 1.25rem;
}

section p { color: var(--text-secondary); margin-bottom: 1rem; }
section p:last-child { margin-bottom: 0; }

.entry {
  margin-bottom: 1.25rem;
}
.entry:last-child { margin-bottom: 0; }

.entry .entry-title {
  color: var(--text-primary);
  font-weight: 500;
}

.entry .entry-meta {
  display: block;
  color: var(--text-muted);
  font-size: 0.85rem;
  margin-top: 0.1rem;
}

.entry .entry-desc {
  color: var(--text-secondary);
  margin-top: 0.5rem;
}

.pub-list {
  list-style: none;
}
.pub-list li {
  color: var(--text-secondary);
  margin-bottom: 1rem;
  padding-left: 1.1rem;
  position: relative;
}
.pub-list li::before {
  content: "–";
  position: absolute;
  left: 0;
  color: var(--text-muted);
}
.pub-list li:last-child { margin-bottom: 0; }
.pub-list .project-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 1.2rem;
  height: 1.2rem;
  margin-left: 0.2rem;
  border: 1px solid currentColor;
  border-radius: 50%;
  color: var(--accent);
  font-size: 0.75rem;
  line-height: 1;
  text-decoration: none;
  vertical-align: middle;
  transition: color 0.2s ease, background-color 0.2s ease;
}
.pub-list .project-link:hover,
.pub-list .project-link:focus-visible {
  color: var(--text-primary);
  background: var(--bg-elevated);
}
@media (prefers-reduced-motion: reduce) {
  .pub-list .project-link { transition: none; }
}

/* FOOTER */
.footer {
  padding-top: 3rem;
  color: var(--text-muted);
  font-size: 0.8rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
}

/* TOP-RIGHT ICON CONTROLS (theme toggle + glitch icon) */
.top-controls {
  position: fixed;
  top: 1rem;
  right: 1rem;
  z-index: 30;
  display: flex;
  gap: 0.5rem;
}

.icon-btn {
  position: relative;
  display: inline-grid;
  place-items: center;
  width: 2.1rem;
  height: 2.1rem;
  border-radius: 6px;
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.95rem;
  border: 1px solid var(--rule);
  background: var(--bg-elevated);
  cursor: pointer;
  font-family: inherit;
}
.icon-btn:hover,
.icon-btn:focus-visible {
  color: var(--text-primary);
  border-color: var(--text-muted);
}

/* THEME TOGGLE */
.theme-toggle .icon-moon { display: none; }
:root[data-theme="dark"] .theme-toggle .icon-sun { display: none; }
:root[data-theme="dark"] .theme-toggle .icon-moon { display: inline; }
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .theme-toggle .icon-sun { display: none; }
  :root:not([data-theme="light"]) .theme-toggle .icon-moon { display: inline; }
}

/* GLITCH ICON (link to terminal mode) */
.glitch-icon span { position: relative; z-index: 1; }
.glitch-icon::before,
.glitch-icon::after {
  content: "◧";
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  opacity: 0;
}
.glitch-icon::before { color: #ff3b3b; }
.glitch-icon::after { color: #3bd1ff; }
.glitch-icon:hover,
.glitch-icon:focus-visible {
  color: var(--text-primary);
  border-color: var(--text-muted);
}
.glitch-icon:hover::before,
.glitch-icon:focus-visible::before {
  opacity: 0.75;
  transform: translate(-1.5px, 0.5px);
  animation: glitch-shift 0.35s steps(2, jump-none) infinite;
}
.glitch-icon:hover::after,
.glitch-icon:focus-visible::after {
  opacity: 0.75;
  transform: translate(1.5px, -0.5px);
  animation: glitch-shift-rev 0.35s steps(2, jump-none) infinite;
}
@keyframes glitch-shift {
  0% { transform: translate(-1.5px, 0.5px); }
  50% { transform: translate(-2.5px, -0.5px); }
  100% { transform: translate(-1.5px, 0.5px); }
}
@keyframes glitch-shift-rev {
  0% { transform: translate(1.5px, -0.5px); }
  50% { transform: translate(2.5px, 0.5px); }
  100% { transform: translate(1.5px, -0.5px); }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .glitch-icon:hover::before,
  .glitch-icon:hover::after,
  .glitch-icon:focus-visible::before,
  .glitch-icon:focus-visible::after {
    animation: none;
  }
}

/* MOBILE */
@media (max-width: 640px) {
  .header { padding: 3rem 0 2rem; }
  .header h1 { font-size: 1.4rem; }
  section { padding: 2rem 0; }
}