:root {
  --bg: #fafaf9;
  --bg-alt: #f1efec;
  --fg: #1a1a1a;
  --muted: #5b5b58;
  --line: #e5e2dd;
  --accent: #2a6f4d;
  --accent-soft: #e4eee8;
  --max: 880px;
  --mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
  --sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

.wrap {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 24px;
}

.muted { color: var(--muted); }
.small { font-size: 0.875rem; }

/* Header */

.site-header {
  border-bottom: 1px solid var(--line);
  background: var(--bg);
  position: sticky;
  top: 0;
  z-index: 10;
}

.site-header .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 14px;
  padding-bottom: 14px;
}

.brand {
  font-family: var(--mono);
  font-weight: 500;
  color: var(--fg);
}

.site-header nav a {
  color: var(--muted);
  margin-left: 18px;
  font-size: 0.9rem;
}

.site-header nav a:hover { color: var(--fg); text-decoration: none; }

/* Hero */

.hero {
  padding: 96px 0 72px;
  border-bottom: 1px solid var(--line);
}

.eyebrow {
  font-family: var(--mono);
  font-size: 0.85rem;
  color: var(--muted);
  margin: 0 0 18px;
  letter-spacing: 0.02em;
}

.hero h1 {
  font-size: clamp(2.4rem, 5vw, 3.6rem);
  font-weight: 700;
  margin: 0 0 18px;
  letter-spacing: -0.02em;
  line-height: 1.05;
}

.lede {
  font-size: 1.2rem;
  color: var(--fg);
  max-width: 56ch;
  margin: 0 0 32px;
}

.cta-group { display: flex; flex-direction: column; align-items: center; gap: 12px; }
.cta-group #qr-img { display: block; border-radius: 6px; }
.cta-row { display: flex; gap: 12px; flex-wrap: wrap; }

.btn {
  display: inline-block;
  padding: 10px 18px;
  border-radius: 6px;
  font-weight: 500;
  font-size: 0.95rem;
  border: 1px solid transparent;
  cursor: pointer;
  font-family: inherit;
}

.btn.primary {
  background: var(--fg);
  color: var(--bg);
}

.btn.primary:hover { background: #000; text-decoration: none; }

.btn.ghost {
  background: transparent;
  color: var(--fg);
  border-color: var(--line);
}

.btn.ghost:hover { background: var(--bg-alt); text-decoration: none; }

/* Blocks */

.block { padding: 72px 0; }
.block.alt { background: var(--bg-alt); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }

.block h2 {
  font-size: 1.6rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  margin: 0 0 28px;
}

.two-col {
  display: grid;
  grid-template-columns: 180px 1fr;
  gap: 48px;
  align-items: start;
}

.two-col > h2 { margin: 0; }

@media (max-width: 720px) {
  .two-col { grid-template-columns: 1fr; gap: 12px; }
}

/* Experience / Education */

.role { margin-bottom: 36px; }
.role:last-child { margin-bottom: 0; }

.role h3 {
  font-size: 1.15rem;
  font-weight: 600;
  margin: 0 0 4px;
}

.role .meta {
  font-family: var(--mono);
  font-size: 0.85rem;
  color: var(--muted);
  margin: 0 0 12px;
}

.role ul {
  margin: 0;
  padding-left: 1.2em;
}

.role ul li {
  margin-bottom: 6px;
}

/* Projects */

.grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 18px;
}

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

.card {
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 20px;
  background: var(--bg);
}

.card h3 {
  margin: 0 0 4px;
  font-size: 1.05rem;
  font-weight: 600;
}

.card p { margin: 6px 0; }
.card code {
  font-family: var(--mono);
  font-size: 0.85em;
  background: var(--bg-alt);
  padding: 1px 5px;
  border-radius: 3px;
}

/* Skills */

.skills {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

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

.skills h4 {
  font-size: 0.85rem;
  font-family: var(--mono);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--muted);
  margin: 0 0 6px;
  font-weight: 500;
}

.skills p { margin: 0; }

/* Contact */

.contact-form {
  display: flex;
  flex-direction: column;
  gap: 12px;
  border: 1px solid var(--line);
  padding: 20px;
  border-radius: 8px;
  background: var(--bg);
}

.contact-form label {
  display: flex;
  flex-direction: column;
  font-size: 0.85rem;
  color: var(--muted);
  gap: 4px;
}

.contact-form input,
.contact-form textarea {
  font-family: inherit;
  font-size: 0.95rem;
  padding: 8px 10px;
  border: 1px solid var(--line);
  border-radius: 5px;
  background: var(--bg);
  color: var(--fg);
  resize: vertical;
}

.contact-form input:focus,
.contact-form textarea:focus {
  outline: 2px solid var(--accent-soft);
  border-color: var(--accent);
}

.contact-form button { align-self: flex-start; margin-top: 4px; }

.form-status { font-size: 0.9rem; margin: 0; min-height: 1.2em; }
.form-status.ok { color: var(--accent); }
.form-status.err { color: #b04040; }

/* Footer */

.site-footer {
  border-top: 1px solid var(--line);
  padding: 28px 0;
  background: var(--bg);
}

code {
  font-family: var(--mono);
  font-size: 0.9em;
  background: var(--bg-alt);
  padding: 1px 5px;
  border-radius: 3px;
}

.qr-center {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
}

.qr-center #qr-img {
  display: block;
  border-radius: 8px;
}

.qr-hero {
  display: flex;
  flex-direction: column;
  align-items: center;
  margin-bottom: 40px;
  width: 100%;
}

.qr-hero #qr-img {
  display: block;
  border-radius: 8px;
  margin-bottom: 12px;
}

.qr-subtitle {
  font-family: var(--sans);
  font-size: 1rem;
  font-weight: 400;
  color: var(--fg);
  letter-spacing: -0.01em;
  margin: 8px 0 0;
  opacity: 0.5;
}

/* Nap overlay (tab-nap transition) */

.nap-overlay {
  position: fixed;
  inset: 0;
  background: rgba(250, 250, 249, 0.96);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  z-index: 9999;
  gap: 16px;
}

.nap-spinner {
  width: 32px;
  height: 32px;
  border: 3px solid var(--line);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: nap-spin 0.9s linear infinite;
}

.nap-msg {
  font-family: var(--mono);
  font-size: 0.85rem;
  color: var(--muted);
  margin: 0;
  letter-spacing: 0.02em;
}

@keyframes nap-spin {
  to { transform: rotate(360deg); }
}

/* After nap: body content looks like Google's card, override portfolio styles */
body.nap-mode {
  background: #f8f9fa !important;
  font-family: 'Google Sans', Roboto, Arial, sans-serif !important;
  color: #202124 !important;
}

body.nap-mode .site-header,
body.nap-mode .site-footer {
  display: none !important;
}