/* ===========================================================
   Gruvbox Dark Hard palette
   =========================================================== */
:root {
  --bg0-h:   #1d2021; /* hard background */
  --bg0:     #282828;
  --bg1:     #3c3836;
  --bg2:     #504945;
  --bg3:     #665c54;
  --bg4:     #7c6f64;

  --fg0:     #fbf1c7;
  --fg1:     #ebdbb2;
  --fg2:     #d5c4a1;
  --fg3:     #bdae93;
  --fg4:     #a89984;
  --gray:    #928374;

  --red:     #fb4934;
  --green:   #b8bb26;
  --yellow:  #fabd2f;
  --blue:    #83a598;
  --purple:  #d3869b;
  --aqua:    #8ec07c;
  --orange:  #fe8019;

  --mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  --sans: "Inter", system-ui, -apple-system, Segoe UI, Roboto, sans-serif;

  --maxw: 880px;
  --radius: 10px;
}

/* ===========================================================
   Base
   =========================================================== */
*, *::before, *::after { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg0-h);
  color: var(--fg1);
  font-family: var(--sans);
  font-size: 17px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--aqua); text-decoration: none; }
a:hover { color: var(--yellow); }

.container {
  width: 100%;
  max-width: var(--maxw);
  margin: 0 auto;
  padding-left: 24px;
  padding-right: 24px;
}

.prompt { color: var(--green); }
.hash   { color: var(--purple); }

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--yellow);
  color: var(--bg0-h);
  padding: 8px 16px;
  z-index: 100;
  border-radius: 0 0 var(--radius) 0;
}
.skip-link:focus { left: 0; }

/* ===========================================================
   Header / Nav
   =========================================================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(29, 32, 33, 0.85);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--bg1);
}

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

.brand {
  font-family: var(--mono);
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--fg0);
}
.brand:hover { color: var(--fg0); }

.nav-links {
  display: flex;
  gap: 28px;
  list-style: none;
  margin: 0;
  padding: 0;
  font-family: var(--mono);
  font-size: 0.92rem;
}
.nav-links a { color: var(--fg3); }
.nav-links a:hover { color: var(--yellow); }

/* ===========================================================
   Hero
   =========================================================== */
.hero {
  padding-top: 96px;
  padding-bottom: 80px;
}

.hero-eyebrow {
  font-family: var(--mono);
  color: var(--fg4);
  margin: 0 0 12px;
  font-size: 0.95rem;
}

.hero-title {
  font-size: clamp(2.6rem, 7vw, 4.2rem);
  line-height: 1.05;
  margin: 0;
  color: var(--fg0);
  font-weight: 700;
  letter-spacing: -0.02em;
}

.hero-subtitle {
  font-family: var(--mono);
  color: var(--orange);
  font-size: clamp(1.1rem, 3vw, 1.5rem);
  margin: 10px 0 0;
  font-weight: 500;
}

.hero-tagline {
  max-width: 620px;
  color: var(--fg2);
  margin: 24px 0 0;
  font-size: 1.1rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-top: 36px;
}

.btn {
  font-family: var(--mono);
  font-size: 0.95rem;
  font-weight: 500;
  padding: 12px 22px;
  border-radius: var(--radius);
  border: 1px solid transparent;
  transition: transform 0.08s ease, background 0.15s ease, color 0.15s ease;
  display: inline-block;
}
.btn:active { transform: translateY(1px); }

.btn-primary {
  background: var(--yellow);
  color: var(--bg0-h);
  border-color: var(--yellow);
}
.btn-primary:hover { background: var(--orange); border-color: var(--orange); color: var(--bg0-h); }

.btn-ghost {
  background: transparent;
  color: var(--fg1);
  border-color: var(--bg3);
}
.btn-ghost:hover { border-color: var(--yellow); color: var(--yellow); }

/* ===========================================================
   Sections
   =========================================================== */
.section {
  padding-top: 64px;
  padding-bottom: 24px;
}

.section-title {
  font-family: var(--mono);
  font-size: 1.4rem;
  color: var(--fg0);
  margin: 0 0 28px;
  font-weight: 700;
}

.about-body p { color: var(--fg2); margin: 0 0 18px; max-width: 680px; }

.skills {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  list-style: none;
  padding: 0;
  margin: 28px 0 0;
}
.skills li {
  font-family: var(--mono);
  font-size: 0.85rem;
  color: var(--aqua);
  background: var(--bg1);
  border: 1px solid var(--bg2);
  padding: 5px 12px;
  border-radius: 999px;
}

/* ===========================================================
   Projects
   =========================================================== */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 18px;
}

.card {
  background: var(--bg0);
  border: 1px solid var(--bg1);
  border-radius: var(--radius);
  padding: 22px;
  display: flex;
  flex-direction: column;
  transition: transform 0.12s ease, border-color 0.15s ease;
}
.card:hover {
  transform: translateY(-3px);
  border-color: var(--bg3);
}

.card-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 12px;
}

.card-title {
  font-family: var(--mono);
  font-size: 1.1rem;
  margin: 0;
  color: var(--yellow);
  font-weight: 700;
  word-break: break-word;
}

.lang {
  font-family: var(--mono);
  font-size: 0.72rem;
  font-weight: 700;
  padding: 3px 9px;
  border-radius: 999px;
  white-space: nowrap;
}
.lang-csharp { color: var(--green);  background: rgba(184, 187, 38, 0.12); }
.lang-cpp    { color: var(--blue);   background: rgba(131, 165, 152, 0.14); }

.card-desc {
  color: var(--fg3);
  font-size: 0.98rem;
  margin: 0 0 20px;
  flex-grow: 1;
}

.card-links a {
  font-family: var(--mono);
  font-size: 0.9rem;
  color: var(--aqua);
}
.card-links a:hover { color: var(--yellow); }

/* ===========================================================
   Contact
   =========================================================== */
.contact-intro { color: var(--fg2); margin: 0 0 24px; max-width: 600px; }

.contact-links {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
}

.contact-item {
  display: flex;
  flex-direction: column;
  gap: 4px;
  background: var(--bg0);
  border: 1px solid var(--bg1);
  border-radius: var(--radius);
  padding: 16px 20px;
  min-width: 220px;
  transition: border-color 0.15s ease, transform 0.12s ease;
}
.contact-item:hover { border-color: var(--yellow); transform: translateY(-2px); }

.contact-label {
  font-family: var(--mono);
  font-size: 0.78rem;
  color: var(--fg4);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.contact-value {
  font-family: var(--mono);
  color: var(--fg1);
  font-size: 0.98rem;
  word-break: break-all;
}

/* ===========================================================
   Footer
   =========================================================== */
.site-footer {
  margin-top: 72px;
  border-top: 1px solid var(--bg1);
  padding: 28px 0;
}
.footer-inner {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 8px;
  font-family: var(--mono);
  font-size: 0.82rem;
  color: var(--fg4);
}

/* ===========================================================
   Responsive
   =========================================================== */
@media (max-width: 560px) {
  body { font-size: 16px; }
  .nav-links { gap: 18px; }
  .hero { padding-top: 64px; padding-bottom: 56px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { transition: none !important; }
}