@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&display=swap');

/* ── Reset ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }

/* ── Custom Properties ── */
:root {
  --bg:         #ffffff;
  --text:       #18181b;
  --text-2:     #71717a;
  --text-3:     #a1a1aa;
  --accent:     #2563eb;
  --accent-dim: #eff6ff;
  --border:     #e4e4e7;
  --surface:    #fafafa;
  --tag-bg:     #f4f4f5;
  --tag-text:   #52525b;

  --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

  --container: 860px;
  --reading:   660px;
  --pad:       1.5rem;

  --transition: 0.15s ease;
}

/* ── Base ── */
html { font-size: 16px; -webkit-font-smoothing: antialiased; }

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* ── Layout ── */
.container {
  width: 100%;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 var(--pad);
}

.reading {
  max-width: var(--reading);
}

section {
  padding: 5rem 0;
}

section + section {
  border-top: 1px solid var(--border);
}

/* ── Navigation ── */
nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

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

.nav-logo {
  font-size: 0.9375rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--text);
  transition: opacity var(--transition);
}

.nav-logo:hover { opacity: 0.7; }

.nav-links {
  display: flex;
  align-items: center;
  gap: 2rem;
  list-style: none;
}

.nav-links a {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-2);
  transition: color var(--transition);
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--text);
}

.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
  color: var(--text);
}

.nav-toggle svg { display: block; }

/* Mobile nav */
.nav-mobile {
  display: none;
  flex-direction: column;
  gap: 0;
  border-top: 1px solid var(--border);
}

.nav-mobile.open { display: flex; }

.nav-mobile a {
  display: block;
  padding: 0.875rem var(--pad);
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--text-2);
  border-bottom: 1px solid var(--border);
  transition: color var(--transition), background var(--transition);
}

.nav-mobile a:hover,
.nav-mobile a.active {
  color: var(--text);
  background: var(--surface);
}

/* ── Hero ── */
.hero {
  padding: 6rem 0 5rem;
  border-top: none;
}

.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.8125rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-3);
  margin-bottom: 1.5rem;
}

.hero-eyebrow-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #22c55e;
  animation: pulse 2s ease infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50%       { opacity: 0.4; }
}

.hero h1 {
  font-size: clamp(2.25rem, 5vw, 3.25rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.1;
  color: var(--text);
  margin-bottom: 1.25rem;
}

.hero-sub {
  font-size: 1.0625rem;
  color: var(--text-2);
  max-width: 480px;
  line-height: 1.7;
  margin-bottom: 2.5rem;
}

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

/* ── Buttons ── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  padding: 0.5625rem 1.125rem;
  border-radius: 6px;
  font-family: var(--font);
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  transition: background var(--transition), color var(--transition),
              border-color var(--transition), opacity var(--transition);
  border: 1px solid transparent;
  text-decoration: none;
}

.btn-primary {
  background: var(--text);
  color: #fff;
  border-color: var(--text);
}

.btn-primary:hover { opacity: 0.8; }

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

.btn-outline:hover {
  background: var(--surface);
  border-color: #d4d4d8;
}

/* ── Section Headers ── */
.section-header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  margin-bottom: 2.5rem;
}

.section-title {
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-3);
}

.section-link {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--accent);
  transition: opacity var(--transition);
}

.section-link:hover { opacity: 0.75; }

/* ── Project Cards ── */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 1px;
  border: 1px solid var(--border);
  border-radius: 10px;
  overflow: hidden;
}

.project-card {
  background: var(--bg);
  padding: 1.75rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  transition: background var(--transition);
  position: relative;
}

.project-card:hover { background: var(--surface); }

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

.project-name {
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--text);
  letter-spacing: -0.01em;
}

.project-status {
  flex-shrink: 0;
  font-size: 0.6875rem;
  font-weight: 500;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  padding: 2px 8px;
  border-radius: 20px;
}

.status-live     { background: #dcfce7; color: #15803d; }
.status-progress { background: #fef9c3; color: #a16207; }
.status-soon     { background: var(--tag-bg); color: var(--tag-text); }

.project-desc {
  font-size: 0.875rem;
  color: var(--text-2);
  line-height: 1.6;
  flex: 1;
}

.project-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.375rem;
  margin-top: auto;
}

.tag {
  font-size: 0.75rem;
  font-weight: 500;
  padding: 2px 8px;
  border-radius: 4px;
  background: var(--tag-bg);
  color: var(--tag-text);
}

.project-link {
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--accent);
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  transition: gap var(--transition);
}

.project-link:hover { gap: 0.5rem; }

/* ── Writing List ── */
.post-list {
  display: flex;
  flex-direction: column;
}

.post-item {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: baseline;
  gap: 1.5rem;
  padding: 1.375rem 0;
  border-bottom: 1px solid var(--border);
  transition: var(--transition);
}

.post-item:first-child { border-top: 1px solid var(--border); }

.post-item:hover .post-title { color: var(--accent); }

.post-title {
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--text);
  letter-spacing: -0.01em;
  transition: color var(--transition);
  line-height: 1.5;
}

.post-meta {
  font-size: 0.8125rem;
  color: var(--text-3);
  white-space: nowrap;
}

.post-desc {
  font-size: 0.875rem;
  color: var(--text-2);
  margin-top: 0.25rem;
  line-height: 1.5;
}

/* ── About / Bio ── */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 200px;
  gap: 4rem;
  align-items: start;
}

.about-avatar {
  width: 200px;
  height: 200px;
  border-radius: 10px;
  background: var(--surface);
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--text-3);
  letter-spacing: -0.02em;
}

.about-content h2 {
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 1rem;
  color: var(--text);
}

.about-content p {
  font-size: 1rem;
  color: var(--text-2);
  line-height: 1.75;
  margin-bottom: 1rem;
}

.about-content p:last-child { margin-bottom: 0; }

/* ── Prose (blog posts) ── */
.prose h1 {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.2;
  color: var(--text);
  margin-bottom: 1rem;
}

.prose-meta {
  display: flex;
  align-items: center;
  gap: 1rem;
  font-size: 0.875rem;
  color: var(--text-3);
  margin-bottom: 3rem;
  padding-bottom: 2rem;
  border-bottom: 1px solid var(--border);
}

.prose-meta span { display: flex; align-items: center; gap: 0.375rem; }

.prose-body h2 {
  font-size: 1.25rem;
  font-weight: 600;
  letter-spacing: -0.02em;
  color: var(--text);
  margin: 2.5rem 0 0.875rem;
}

.prose-body p {
  font-size: 1.0625rem;
  color: var(--text-2);
  line-height: 1.8;
  margin-bottom: 1.25rem;
}

.prose-body strong { color: var(--text); font-weight: 600; }

.prose-body blockquote {
  border-left: 3px solid var(--border);
  padding-left: 1.25rem;
  margin: 1.75rem 0;
  color: var(--text-2);
  font-style: italic;
}

.prose-body ul, .prose-body ol {
  padding-left: 1.5rem;
  margin-bottom: 1.25rem;
  color: var(--text-2);
}

.prose-body li {
  font-size: 1.0625rem;
  line-height: 1.8;
  margin-bottom: 0.375rem;
}

.back-link {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-2);
  margin-bottom: 2.5rem;
  transition: color var(--transition);
}

.back-link:hover { color: var(--text); }

/* ── Page Header ── */
.page-header {
  padding: 4rem 0 3rem;
}

.page-header h1 {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  color: var(--text);
  margin-bottom: 0.625rem;
}

.page-header p {
  font-size: 1rem;
  color: var(--text-2);
  max-width: 480px;
}

/* ── Now strip ── */
.now-strip {
  background: var(--surface);
  border-radius: 8px;
  padding: 1.25rem 1.5rem;
  display: flex;
  gap: 2rem;
  flex-wrap: wrap;
  border: 1px solid var(--border);
  margin-top: 3rem;
}

.now-item {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.now-label {
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-3);
}

.now-value {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text);
}

/* ── Divider ── */
hr {
  border: none;
  border-top: 1px solid var(--border);
  margin: 2rem 0;
}

/* ── Footer ── */
footer {
  margin-top: auto;
  border-top: 1px solid var(--border);
  padding: 1.75rem 0;
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
}

.footer-copy {
  font-size: 0.8125rem;
  color: var(--text-3);
}

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

.footer-links a {
  font-size: 0.8125rem;
  color: var(--text-3);
  transition: color var(--transition);
}

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

/* ── Responsive ── */
@media (max-width: 680px) {
  :root { --pad: 1.25rem; }

  section { padding: 3.5rem 0; }

  .hero { padding: 4rem 0 3.5rem; }

  .nav-links { display: none; }
  .nav-toggle { display: block; }

  .projects-grid {
    grid-template-columns: 1fr;
  }

  .about-grid {
    grid-template-columns: 1fr;
  }

  .about-avatar {
    width: 80px;
    height: 80px;
    font-size: 1.5rem;
    order: -1;
  }

  .post-item {
    grid-template-columns: 1fr;
    gap: 0.25rem;
  }

  .footer-inner {
    flex-direction: column;
    align-items: flex-start;
  }
}