@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;900&family=JetBrains+Mono:wght@400;700&display=swap');

/* ── Theme Variables ── */
:root {
  /* Light mode: clean slate */
  --bg: #f8fafc;
  --fg: #0f172a;
  --muted: #64748b;
  --surface: #ffffff;
  --border: #e2e8f0;
  --border-strong: #cbd5e1;
  --accent: #0284c7;
  --accent-2: #38bdf8;
  --heading: #0f172a;
  --shadow: 0 2px 12px rgba(0,0,0,0.08);
  --text-muted: #64748b;
}

.theme-dark {
  /* Dark mode: deep space */
  --bg: #00000f;
  --fg: #94a3b8;
  --muted: #475569;
  --surface: rgba(255,255,255,0.025);
  --border: rgba(255,255,255,0.06);
  --border-strong: rgba(255,255,255,0.1);
  --accent: #38bdf8;
  --accent-2: #7dd3fc;
  --heading: #f1f5f9;
  --shadow: 0 4px 24px rgba(0,0,0,0.5);
  --text-muted: #475569;
}

/* ── Base ── */
* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  background: var(--bg);
  color: var(--fg);
  font-family: 'Inter', sans-serif;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  transition: background .2s, color .2s;
}

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

.container { max-width: 1000px; margin: 0 auto; padding: 20px; }
header { padding: 32px 20px 16px; }

h1, h2, h3 { font-family: 'Inter', sans-serif; font-weight: 700; letter-spacing: -.01em; }
h1 { font-size: 2.25rem; margin: 0; color: var(--heading); font-weight: 900; }
.subtitle { color: var(--muted); margin-top: 6px; font-size: 1rem; font-family: 'JetBrains Mono', monospace; font-size: 12px; letter-spacing: .06em; }

/* Accent rule */
.rule { height: 3px; width: 100%; background: linear-gradient(90deg, var(--accent-2), transparent); border-radius: 2px; margin: 14px 0 10px; }

/* Cards / Sections */
.section {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  box-shadow: var(--shadow);
  padding: 18px;
  margin: 14px 0;
  transition: background .2s, border-color .2s;
}
.section h2 { font-size: 1.05rem; color: var(--accent); margin: 0 0 10px; letter-spacing: .04em; text-transform: uppercase; font-size: 10px; font-family: 'JetBrains Mono', monospace; }
.meta { color: var(--muted); font-size: .9rem; font-family: 'JetBrains Mono', monospace; font-size: 11px; letter-spacing: .04em; margin-bottom: 6px; }
ul { margin: 6px 0 6px 1.1rem; padding: 0; }
li { margin: 3px 0; font-size: .95rem; }
article h3 { font-size: 1rem; color: var(--heading); margin: 12px 0 2px; }

/* Pills & badges */
.pills { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 8px; }
.pill {
  padding: 3px 10px;
  border-radius: 6px;
  border: 1px solid var(--border-strong);
  background: var(--surface);
  color: var(--accent);
  font-size: .8rem;
  font-family: 'JetBrains Mono', monospace;
  letter-spacing: .02em;
  transition: border-color .2s, background .2s;
}

/* Grid */
.grid { display: grid; grid-template-columns: 1fr; gap: 16px; }
@media (min-width: 820px) { .grid { grid-template-columns: 2fr 1fr; } }

/* Footer */
footer { color: var(--muted); font-size: .9rem; text-align: center; padding: 28px 20px 40px; font-family: 'JetBrains Mono', monospace; font-size: 10px; letter-spacing: .06em; }

/* ── Brand Monogram ── */
.brand-monogram {
  font-family: 'Inter', sans-serif;
  font-size: 1.6rem;
  font-weight: 900;
  color: var(--accent-2);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1.5px solid var(--accent-2);
  border-radius: 50%;
  width: 52px;
  height: 52px;
  background: var(--surface);
  box-shadow: var(--shadow);
  flex-shrink: 0;
  margin-right: 12px;
  letter-spacing: -.04em;
}

/* ── Theme Toggle Button ── */
#theme-toggle {
  position: fixed;
  right: 16px;
  top: 16px;
  height: 36px;
  padding: 0 12px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border-radius: 8px;
  border: 1px solid var(--border-strong);
  background: var(--surface);
  color: var(--fg);
  cursor: pointer;
  box-shadow: var(--shadow);
  font-family: 'JetBrains Mono', monospace;
  font-size: 10px;
  letter-spacing: .06em;
  font-weight: 700;
  transition: transform .08s ease, background .2s ease, color .2s ease, border-color .2s ease;
  z-index: 1000;
}
#theme-toggle:hover { transform: translateY(-1px); }
#theme-toggle .dot {
  display: inline-block; width: 7px; height: 7px; border-radius: 50%;
  background: var(--accent-2);
}

/* ── Fade-in animation ── */
.fade-in { opacity: 0; transform: translateY(8px); transition: opacity .6s ease, transform .6s ease; }
.fade-in.visible { opacity: 1; transform: translateY(0); }

/* ── Aside headings ── */
aside .section h2 { margin-top: 16px; }
aside .section h2:first-child { margin-top: 0; }
aside .section p { font-size: .9rem; color: var(--fg); margin-bottom: 10px; }

/* ── Contact list ── */
.contact-list { list-style: none; margin: 6px 0; padding: 0; }
.contact-list li { font-size: .9rem; margin: 5px 0; }

/* ── Mobile ── */
@media (max-width: 640px) {
  h1 { font-size: 1.6rem; }
  .subtitle { font-size: .85rem; }
  header { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; padding: 20px 12px 12px; }
  .brand-monogram { width: 44px; height: 44px; font-size: 1.3rem; }
  .container { padding: 12px; }
  #theme-toggle { top: 8px; right: 8px; height: 30px; padding: 0 10px; }
  .section { padding: 14px; }
  .pill { font-size: .75rem; }
}