@import url('https://fonts.googleapis.com/css2?family=JetBrains+Mono:wght@400;700&family=Space+Grotesk:wght@500;700&display=swap');

*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  font-family: 'Space Grotesk', sans-serif;
  background: var(--bg);
  color: var(--text);
  font-size: 16px;
  line-height: 1.65;
  min-height: 100vh;
  transition: background .2s ease, color .2s ease;
}

.mono { font-family: 'JetBrains Mono', monospace; }

a { color: inherit; }

.page-wrap { max-width: 980px; margin: 0 auto; padding: 0 28px; }

/* ---------- navbar ---------- */

.navbar {
  position: sticky;
  top: 0;
  z-index: 500;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 28px;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--panel-border);
}

.nav-logo {
  font-family: 'JetBrains Mono', monospace;
  font-weight: 700;
  font-size: 1.05em;
  text-decoration: none;
  color: var(--text);
  letter-spacing: -0.01em;
}
.nav-logo .logo-accent { color: var(--teal); }

.nav-links { display: flex; gap: 4px; }

.nav-link {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.88em;
  text-decoration: none;
  color: var(--comment);
  padding: 8px 14px;
  border-radius: 6px;
  transition: color .15s ease, background .15s ease;
}
.nav-link:hover { color: var(--text); background: var(--bg2); }
.nav-link.active { color: var(--teal); background: var(--bg2); }

.nav-toggle {
  display: none;
  background: none;
  border: 1px solid var(--dim);
  border-radius: 6px;
  color: var(--text);
  width: 38px;
  height: 38px;
  font-size: 1.1em;
  cursor: pointer;
}

/* ---------- hero ---------- */

.hero {
  padding: 88px 0 64px;
  border-bottom: 1px solid var(--panel-border);
}

.hero h1 {
  font-family: 'JetBrains Mono', monospace;
  font-size: clamp(2.1em, 5vw, 3.2em);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 20px;
}

.hero p {
  max-width: 640px;
  font-size: 1.05em;
  color: var(--text);
  margin-bottom: 12px;
}
.hero p:last-of-type { margin-bottom: 32px; }

.hero-actions { display: flex; gap: 12px; flex-wrap: wrap; }

/* ---------- buttons ---------- */

.btn {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.9em;
  text-decoration: none;
  padding: 11px 22px;
  border-radius: 8px;
  border: 1px solid transparent;
  transition: transform .15s ease, border-color .15s ease, background .15s ease;
  display: inline-block;
}
.btn-solid { background: var(--teal); color: var(--bg); font-weight: 700; }
.btn-solid:hover { transform: translateY(-2px); }
.btn-ghost { border-color: var(--dim); color: var(--text); }
.btn-ghost:hover { border-color: var(--teal); color: var(--teal); }

/* ---------- section headers ---------- */

.section { padding: 56px 0; }
.section-heading {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.82em;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--comment);
  margin-bottom: 24px;
}
.section-heading .n { color: var(--teal); }

/* ---------- block / card grid ---------- */

.block-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 18px;
}

a.card { text-decoration: none; }

.card {
  background: var(--bg2);
  border: 1px solid var(--panel-border);
  border-radius: 12px;
  padding: 22px;
  transition: transform .18s ease, border-color .18s ease;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.card:hover { transform: translateY(-4px); border-color: var(--teal); }

.card-title {
  font-family: 'JetBrains Mono', monospace;
  font-weight: 700;
  font-size: 1.02em;
  color: var(--text);
  text-decoration: none;
}
.card-title a { text-decoration: none; color: inherit; }
.card-title a:hover { color: var(--teal); }

.card-desc { color: var(--comment); font-size: 0.92em; }

.card-tag {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.72em;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--comment);
  align-self: flex-start;
}

/* per-category accent bar on achievement cards */
.card.cat-coding { border-left: 3px solid var(--teal); }
.card.cat-science { border-left: 3px solid var(--purple); }
.card.cat-hsie { border-left: 3px solid var(--yellow); }
.card.cat-leadership { border-left: 3px solid var(--orange); }
.card.cat-other { border-left: 3px solid var(--red); }

.card.cat-coding .card-tag { color: var(--teal); }
.card.cat-science .card-tag { color: var(--purple); }
.card.cat-hsie .card-tag { color: var(--yellow); }
.card.cat-leadership .card-tag { color: var(--orange); }
.card.cat-other .card-tag { color: var(--red); }

/* ---------- filter chips (achievements) ---------- */

.filter-row { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 24px; }

.filter-btn {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.82em;
  background: none;
  border: 1px solid var(--dim);
  border-radius: 999px;
  padding: 6px 16px;
  color: var(--comment);
  cursor: pointer;
  transition: all .15s ease;
}
.filter-btn:hover { color: var(--text); border-color: var(--text); }
.filter-btn.active { color: var(--bg); background: var(--teal); border-color: var(--teal); font-weight: 700; }

.ach-list { display: none; }
.ach-list.active { display: contents; }

/* ---------- contact ---------- */

.contact-card {
  max-width: 420px;
  background: var(--bg2);
  border: 1px solid var(--panel-border);
  border-radius: 12px;
  padding: 28px;
}
.contact-label {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.78em;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--comment);
  margin-bottom: 8px;
}
.contact-value {
  font-family: 'JetBrains Mono', monospace;
  font-size: 1.05em;
  color: var(--teal);
  text-decoration: none;
}
.contact-value:hover { text-decoration: underline; }

/* ---------- footer ---------- */

.site-footer {
  border-top: 1px solid var(--panel-border);
  padding: 28px;
  text-align: center;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.8em;
  color: var(--comment);
}
.site-footer a { color: var(--comment); text-decoration: none; }
.site-footer a:hover { color: var(--teal); }

/* ---------- theme switcher ---------- */

.theme-switcher {
  position: fixed;
  bottom: 20px;
  right: 20px;
  z-index: 999;
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: 'JetBrains Mono', monospace;
}

.theme-panel {
  display: flex;
  align-items: center;
  gap: 7px;
  background: var(--bg2);
  border: 1px solid var(--panel-border);
  border-radius: 999px;
  padding: 8px;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.3);
}

.theme-options {
  display: flex;
  align-items: center;
  gap: 7px;
  padding: 2px 0;
  max-width: 0;
  overflow: hidden;
  opacity: 0;
  transition: max-width .32s ease, opacity .22s ease;
}
.theme-options.open { max-width: 260px; opacity: 1; }

.theme-swatch {
  width: 20px;
  height: 20px;
  border-radius: 50%;
  border: 2px solid transparent;
  cursor: pointer;
  flex-shrink: 0;
  transition: transform .15s ease, border-color .15s ease;
  padding: 0;
}
.theme-swatch:hover { transform: scale(1.18); }
.theme-swatch.active { border-color: var(--text); }

.theme-toggle-btn {
  width: 30px;
  height: 30px;
  border-radius: 50%;
  border: 1px solid var(--dim);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform .3s ease;
  flex-shrink: 0;
  padding: 0;
}
.theme-toggle-btn:hover { transform: rotate(35deg); }
.theme-toggle-btn::after {
  content: "";
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--theme-swatch);
}

@media (prefers-reduced-motion: reduce) {
  .theme-options, .theme-toggle-btn, .theme-swatch { transition: none; animation: none; }
}

/* ---------- responsive ---------- */

@media (max-width: 640px) {
  .navbar { padding: 14px 18px; }
  .nav-links {
    position: absolute;
    top: 100%; left: 0; right: 0;
    flex-direction: column;
    background: var(--bg2);
    border-bottom: 1px solid var(--panel-border);
    padding: 8px;
    display: none;
  }
  .nav-links.open { display: flex; }
  .nav-toggle { display: block; }
  .page-wrap { padding: 0 18px; }
  .hero { padding: 56px 0 40px; }
  .theme-switcher { bottom: 12px; right: 12px; }
}