:root,
[data-theme="dark"] {
  --bg: #0b0d12;
  --bg-elev: #11151e;
  --bg-code: #07090d;
  --border: #1e2533;
  --border-highlight: #38bdf8;
  --text: #e2e8f0;
  --text-muted: #94a3b8;
  --accent: #38bdf8;
  --accent-amber: #f59e0b;
  --green: #10b981;
}

[data-theme="light"] {
  --bg: #f8fafc;
  --bg-elev: #ffffff;
  --bg-code: #0f172a;
  --border: #cbd5e1;
  --border-highlight: #0284c7;
  --text: #0f172a;
  --text-muted: #475569;
  --accent: #0284c7;
  --accent-amber: #d97706;
  --green: #059669;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background-color: var(--bg);
  color: var(--text);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

code, pre, .brand, .main-nav, .status-line, .section-bar, .project-kicker, .note-idx {
  font-family: "JetBrains Mono", Consolas, monospace;
}

.container {
  max-width: 980px;
  margin: 0 auto;
  padding: 0 24px;
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: var(--bg);
  border-bottom: 1px solid var(--border);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 60px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  text-decoration: none;
  color: var(--text);
  font-weight: 700;
  font-size: 1rem;
}

.brand-prompt {
  color: var(--accent);
}

.brand-ext {
  color: var(--text-muted);
  font-weight: 500;
}

.main-nav {
  display: flex;
  gap: 22px;
  font-size: 0.84rem;
}

.main-nav a {
  color: var(--text-muted);
  text-decoration: none;
}

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

.btn-icon {
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: 6px;
  width: 34px;
  height: 34px;
  cursor: pointer;
  color: var(--text);
}

/* Intro */
.intro {
  padding: 56px 0 40px;
  border-bottom: 1px solid var(--border);
}

.status-line {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.74rem;
  color: var(--green);
  margin-bottom: 16px;
}

.status-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--green);
}

.intro h1 {
  font-size: clamp(1.85rem, 3.4vw, 2.55rem);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.025em;
  margin-bottom: 18px;
  max-width: 820px;
}

.intro-body {
  font-size: 1.02rem;
  color: var(--text-muted);
  max-width: 780px;
  margin-bottom: 12px;
}

.intro-body strong {
  color: var(--text);
}

/* Sections */
.section {
  padding: 48px 0;
  border-bottom: 1px solid var(--border);
}

.section-bar {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  margin-bottom: 24px;
}

.section-bar h2 {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--accent);
}

.section-meta {
  font-size: 0.78rem;
  color: var(--text-muted);
}

/* Project Cards */
.project-list {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.project-card {
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 26px;
}

.project-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 16px;
}

.project-title-group {
  display: flex;
  align-items: center;
  gap: 14px;
}

.project-icon {
  width: 44px;
  height: 44px;
  border-radius: 8px;
}

.project-glyph {
  width: 44px;
  height: 44px;
  border-radius: 8px;
  background: #0f172a;
  border: 1px solid var(--accent-amber);
  color: var(--accent-amber);
  font-family: "JetBrains Mono", monospace;
  font-weight: 700;
  font-size: 0.82rem;
  display: flex;
  align-items: center;
  justify-content: center;
}

.project-kicker {
  font-size: 0.72rem;
  color: var(--text-muted);
  margin-bottom: 2px;
}

.project-head h3 {
  font-size: 1.3rem;
  font-weight: 700;
}

.project-head h3 a {
  color: var(--text);
  text-decoration: none;
}

.project-head h3 a:hover {
  color: var(--accent);
}

.project-links {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  padding: 8px 14px;
  border-radius: 6px;
  font-size: 0.85rem;
  font-weight: 600;
  text-decoration: none;
  border: 1px solid var(--border);
}

.btn-primary {
  background: var(--accent);
  color: #07090d;
  border-color: var(--accent);
}

[data-theme="light"] .btn-primary {
  color: #ffffff;
}

.btn-secondary {
  background: transparent;
  color: var(--text);
}

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

.project-desc {
  color: var(--text-muted);
  font-size: 0.95rem;
  margin-bottom: 18px;
}

.project-desc code {
  font-size: 0.84rem;
  color: var(--accent);
}

.project-specs {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  padding-top: 16px;
  border-top: 1px solid var(--border);
  font-size: 0.88rem;
}

.spec-col strong {
  display: block;
  margin-bottom: 8px;
  color: var(--text);
}

.spec-col ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 6px;
  color: var(--text-muted);
}

.spec-col li::before {
  content: "- ";
  color: var(--accent);
}

.spec-col code {
  font-size: 0.8rem;
  color: var(--text);
}

.project-install {
  margin-top: 18px;
  padding: 10px 14px;
  background: var(--bg-code);
  border: 1px solid var(--border);
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 10px;
}

.project-install code {
  color: #38bdf8;
  font-size: 0.84rem;
}

.install-hint {
  font-size: 0.78rem;
  color: #94a3b8;
}

/* Lab Notes */
.notes-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin-bottom: 24px;
}

.note-box {
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 22px;
}

.note-idx {
  font-size: 0.72rem;
  color: var(--accent-amber);
  margin-bottom: 6px;
}

.note-box h3 {
  font-size: 1.08rem;
  margin-bottom: 10px;
}

.note-box p {
  font-size: 0.9rem;
  color: var(--text-muted);
  margin-bottom: 10px;
}

.note-box code {
  font-size: 0.82rem;
  color: var(--accent);
}

/* Console */
.console-card {
  background: var(--bg-code);
  border: 1px solid var(--border);
  border-radius: 10px;
  overflow: hidden;
  color: #e2e8f0;
}

.console-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 14px;
  border-bottom: 1px solid #1e2533;
  flex-wrap: wrap;
  gap: 8px;
}

.console-tabs {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
}

.console-tab {
  background: transparent;
  border: 1px solid #1e2533;
  color: #94a3b8;
  font-family: "JetBrains Mono", monospace;
  font-size: 0.75rem;
  padding: 4px 10px;
  border-radius: 5px;
  cursor: pointer;
}

.console-tab.active,
.console-tab:hover {
  border-color: #38bdf8;
  color: #38bdf8;
  background: rgba(56, 189, 248, 0.1);
}

.console-badge {
  font-family: "JetBrains Mono", monospace;
  font-size: 0.7rem;
  color: #f59e0b;
}

.console-body {
  padding: 16px 18px;
}

.console-code {
  font-size: 0.8rem;
  line-height: 1.55;
  color: #cbd5e1;
  overflow-x: auto;
  white-space: pre;
}

.console-footer {
  margin-top: 12px;
  padding-top: 10px;
  border-top: 1px solid #1e2533;
  font-size: 0.75rem;
  color: #10b981;
  font-family: "JetBrains Mono", monospace;
}

/* Interests */
.interest-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.interest-item {
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 18px;
}

.interest-item h4 {
  font-size: 0.96rem;
  margin-bottom: 6px;
}

.interest-item p {
  font-size: 0.88rem;
  color: var(--text-muted);
}

.interest-item code {
  font-size: 0.8rem;
  color: var(--accent);
}

/* Footer */
.site-footer {
  padding: 28px 0 40px;
  font-size: 0.84rem;
  color: var(--text-muted);
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}

.footer-links {
  display: flex;
  gap: 18px;
}

.footer-links a {
  color: var(--text-muted);
  text-decoration: none;
}

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

@media (max-width: 760px) {
  .project-specs,
  .notes-grid,
  .interest-grid {
    grid-template-columns: 1fr;
  }
  .main-nav {
    display: none;
  }
}