:root {
  --bg:       #f7f7f6;
  --surface:  #ffffff;
  --surface2: #f2f2f0;
  --border:   #e8e8e5;
  --border2:  #efefed;
  --text:     #0d0d0d;
  --text2:    #5c5c5a;
  --text3:    #9b9b98;
  --text4:    #c8c8c4;
  --green:    #16a34a;
  --green-bg: #f0fdf4;
  --blue:     #f97316;
  --blue-bg:  #fff7ed;
  --font:     'Geist', system-ui, sans-serif;
  --mono:     'Geist Mono', monospace;
  --ease:     cubic-bezier(0.4,0,0.2,1);
  --radius:   8px;
}

.dark {
  --bg:       #111110;
  --surface:  #1c1c1a;
  --surface2: #242422;
  --border:   #2e2e2b;
  --border2:  #272724;
  --text:     #f0efe9;
  --text2:    #8c8c87;
  --text3:    #555550;
  --text4:    #333330;
  --green-bg: rgba(22,163,74,.1);
  --blue-bg:  rgba(249,115,22,.1);
}

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

html {
  background: var(--bg);
  scroll-behavior: smooth;
}

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  font-size: 13px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

button { font-family: var(--font); cursor: pointer; border: none; background: none; color: inherit; }
a { color: inherit; text-decoration: none; }

::-webkit-scrollbar { width: 5px; height: 5px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 3px; }

/* ── CONTAINER ── */

.container {
  max-width: 720px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ── HEADER ── */

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--bg);
  border-bottom: 1px solid var(--border);
  backdrop-filter: blur(8px);
}

.header-inner {
  max-width: 720px;
  margin: 0 auto;
  padding: 0 24px;
  height: 52px;
  display: flex;
  align-items: center;
  gap: 24px;
}

.site-logo {
  font-size: .88rem;
  font-weight: 700;
  letter-spacing: -.02em;
  color: var(--text);
  flex-shrink: 0;
}
.site-logo:hover { opacity: .7; }

.site-nav {
  display: flex;
  gap: 2px;
  flex: 1;
}

.nav-link {
  font-size: .75rem;
  font-weight: 500;
  color: var(--text3);
  padding: 5px 10px;
  border-radius: 6px;
  transition: all .12s;
}
.nav-link:hover { color: var(--text); background: var(--surface2); }

.btn-icon {
  width: 30px;
  height: 30px;
  border-radius: 6px;
  font-size: .88rem;
  color: var(--text3);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all .12s;
  border: 1px solid transparent;
  flex-shrink: 0;
}
.btn-icon:hover { background: var(--surface2); color: var(--text); border-color: var(--border); }

/* ── HERO ── */

.section-hero {
  padding: 80px 0 72px;
  border-bottom: 1px solid var(--border);
}

.hero-avail {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-size: .72rem;
  font-weight: 500;
  color: var(--green);
  background: var(--green-bg);
  border: 1px solid rgba(22,163,74,.2);
  padding: 4px 10px;
  border-radius: 20px;
  margin-bottom: 24px;
}
.hero-avail::before {
  content: '';
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--green);
  flex-shrink: 0;
}

.hero-name {
  font-size: 2.8rem;
  font-weight: 700;
  letter-spacing: -.04em;
  line-height: 1.1;
  margin-bottom: 10px;
}

.hero-title {
  font-size: 1rem;
  font-weight: 400;
  color: var(--text2);
  margin-bottom: 20px;
  letter-spacing: -.01em;
}

.hero-sep { color: var(--text4); margin: 0 4px; }

.hero-bio {
  font-size: .88rem;
  color: var(--text2);
  line-height: 1.75;
  max-width: 520px;
  margin-bottom: 28px;
}

.hero-ctas { display: flex; gap: 10px; flex-wrap: wrap; }

.cta-primary {
  display: inline-flex;
  align-items: center;
  height: 36px;
  padding: 0 18px;
  background: var(--text);
  color: var(--bg);
  border-radius: 7px;
  font-size: .82rem;
  font-weight: 600;
  transition: opacity .12s;
}
.cta-primary:hover { opacity: .85; }

.cta-secondary {
  display: inline-flex;
  align-items: center;
  height: 36px;
  padding: 0 18px;
  background: transparent;
  color: var(--text2);
  border: 1px solid var(--border);
  border-radius: 7px;
  font-size: .82rem;
  font-weight: 500;
  transition: all .12s;
}
.cta-secondary:hover { background: var(--surface2); color: var(--text); }

/* ── ABOUT ── */

.section-about {
  padding: 64px 0;
  border-bottom: 1px solid var(--border);
}

.section-label {
  font-size: .68rem;
  font-weight: 600;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--text4);
  margin-bottom: 28px;
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
}

.about-text {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.about-text p {
  font-size: .88rem;
  color: var(--text2);
  line-height: 1.75;
}

.about-stack { display: flex; flex-direction: column; gap: 16px; }

.stack-group { display: flex; flex-direction: column; gap: 7px; }

.stack-label {
  font-size: .68rem;
  font-weight: 600;
  letter-spacing: .04em;
  text-transform: uppercase;
  color: var(--text3);
}

.stack-tags { display: flex; flex-wrap: wrap; gap: 5px; }

.stag {
  display: inline-flex;
  align-items: center;
  padding: 2px 8px;
  background: var(--surface2);
  border: 1px solid var(--border);
  border-radius: 4px;
  font-size: .7rem;
  font-weight: 500;
  font-family: var(--mono);
  color: var(--text2);
}

/* ── PROJECTS ── */

.section-projects {
  padding: 64px 0;
  border-bottom: 1px solid var(--border);
}

#projects-list {
  margin-top: 0;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.project-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px 22px;
  transition: border-color .15s;
}
.project-card:hover { border-color: var(--text4); }
.project-card.featured { border-color: rgba(249,115,22,.35); }

.featured-badge {
  display: inline-flex;
  align-items: center;
  padding: 2px 8px;
  background: var(--blue-bg);
  border: 1px solid rgba(249,115,22,.25);
  border-radius: 4px;
  font-size: .65rem;
  font-weight: 600;
  letter-spacing: .04em;
  text-transform: uppercase;
  color: var(--blue);
  margin-bottom: 10px;
}

.project-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 10px;
}

.project-title {
  font-size: .95rem;
  font-weight: 600;
  letter-spacing: -.02em;
  color: var(--text);
  line-height: 1.4;
}

.project-links { display: flex; gap: 8px; flex-shrink: 0; }

.project-link {
  font-size: .72rem;
  font-weight: 500;
  color: var(--text3);
  padding: 3px 8px;
  border: 1px solid var(--border);
  border-radius: 5px;
  background: var(--surface2);
  transition: all .12s;
  white-space: nowrap;
}
.project-link:hover { color: var(--text); border-color: var(--text4); background: var(--surface); }

.project-desc {
  font-size: .85rem;
  color: var(--text2);
  line-height: 1.7;
  margin-bottom: 14px;
}

.project-tags { display: flex; flex-wrap: wrap; gap: 5px; }

.project-tag {
  display: inline-flex;
  align-items: center;
  padding: 2px 7px;
  background: var(--surface2);
  border: 1px solid var(--border2);
  border-radius: 4px;
  font-size: .68rem;
  font-weight: 500;
  font-family: var(--mono);
  color: var(--text3);
}

/* ── CONTACT ── */

.section-contact { padding: 64px 0; border-bottom: 1px solid var(--border); }

.contact-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 36px 32px;
}

.contact-heading {
  font-size: 1.1rem;
  font-weight: 600;
  letter-spacing: -.02em;
  margin-bottom: 8px;
}

.contact-sub {
  font-size: .85rem;
  color: var(--text2);
  line-height: 1.7;
  margin-bottom: 20px;
}

.contact-email {
  display: inline-block;
  font-size: .88rem;
  font-weight: 500;
  font-family: var(--mono);
  color: var(--blue);
  margin-bottom: 16px;
  transition: opacity .12s;
}
.contact-email:hover { opacity: .75; }

.contact-links { display: flex; gap: 8px; flex-wrap: wrap; }

.contact-icon {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--surface2);
  color: var(--text3);
  transition: all .12s;
}
.contact-icon:hover { color: var(--text); border-color: var(--text4); background: var(--surface); }

/* ── FOOTER ── */

.site-footer { padding: 24px 0; }
.footer-copy { font-size: .72rem; color: var(--text4); }

/* ── MOBILE ── */

@media (max-width: 640px) {
  .container     { padding: 0 16px; }
  .header-inner  { padding: 0 16px; flex-wrap: wrap; height: auto; gap: 0; }
  .site-logo     { flex: 1; height: 48px; display: flex; align-items: center; }
  .btn-icon      { height: 48px; }
  .site-nav      { display: flex; width: 100%; padding: 4px 0; }
  .nav-link      { flex: 1; text-align: center; }

  .hero-name     { font-size: 2rem; }
  .section-hero  { padding: 48px 0 44px; }
  .section-about,
  .section-projects,
  .section-contact { padding: 48px 0; }

  .about-grid    { grid-template-columns: 1fr; gap: 28px; }
  .project-header { flex-direction: column; gap: 10px; }
  .project-links  { flex-wrap: wrap; }
  .contact-card  { padding: 24px 20px; }
}