/* t420.dev — moderno oscuro, estética ThinkPad (rojo TrackPoint) */
:root {
  --bg: #0b0f14;
  --bg-panel: #11161d;
  --bg-panel-2: #151c25;
  --border: #1f2a36;
  --border-soft: #1a232e;
  --green: #00ff9c;
  --green-dim: #0aa06e;
  --text: #d3dde6;
  --text-dim: #6b7a89;
  --accent: #00b4d8;
  --purple: #a78bfa;
  --red: #ff5c5c;
  --tp-red: #e2231a; /* rojo TrackPoint ThinkPad */
  --yellow: #ffd166;
  --mono: "SFMono-Regular", "JetBrains Mono", Consolas, "Courier New", monospace;
  --sans: "Inter", "SF Pro Text", system-ui, -apple-system, sans-serif;
}

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

html {
  color-scheme: dark;
  scroll-behavior: smooth;
}

body {
  background:
    radial-gradient(900px 500px at 20% -10%, rgba(0, 255, 156, 0.05), transparent 60%),
    radial-gradient(700px 400px at 90% 0%, rgba(226, 35, 26, 0.05), transparent 55%),
    var(--bg);
  color: var(--text);
  font-family: var(--mono);
  font-size: 15px;
  line-height: 1.6;
  min-height: 100vh;
}

.wrap {
  max-width: 900px;
  margin: 0 auto;
  padding: 40px 24px 80px;
}

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

h1, h2, h3, h4 { color: #eaf1f6; line-height: 1.25; font-weight: 600; }
h1 { font-size: 1.7rem; letter-spacing: 0.5px; }
h2 { font-size: 1.2rem; margin: 40px 0 14px; }
h3 { font-size: 1rem; margin: 24px 0 8px; }

p { margin: 10px 0; }

.muted { color: var(--text-dim); }

/* ── nav ─────────────────────────────────────────────── */
.nav {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 18px;
  margin-bottom: 28px;
  font-size: 0.85rem;
  align-items: center;
}
.nav a {
  color: var(--text-dim);
  padding: 4px 2px;
  border-bottom: 2px solid transparent;
  transition: color 0.15s, border-color 0.15s;
}
.nav a:hover { color: var(--green); text-decoration: none; border-bottom-color: var(--tp-red); }

/* ── terminal bar ────────────────────────────────────── */
.termbar {
  display: flex;
  align-items: center;
  gap: 6px;
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-bottom: none;
  padding: 8px 12px;
  border-radius: 8px 8px 0 0;
  font-size: 0.75rem;
  color: var(--text-dim);
}
.termbar .dot { width: 10px; height: 10px; border-radius: 50%; display: inline-block; }
.termbar .dot.r { background: var(--red); }
.termbar .dot.y { background: var(--yellow); }
.termbar .dot.g { background: var(--green); }
.termbar .tname { margin-left: 8px; letter-spacing: 0.5px; }

.term {
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-radius: 0 0 8px 8px;
  padding: 18px 20px;
  overflow-x: auto;
  font-size: 0.85rem;
}

/* ── ascii diagram ──────────────────────────────────── */
pre.ascii {
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 16px;
  overflow-x: auto;
  color: var(--green);
  font-size: 0.78rem;
  line-height: 1.35;
}

.prompt { color: var(--green); }
.prompt::before { content: "❯ "; color: var(--green); }
.cmd { color: var(--text); }

/* ── tables ─────────────────────────────────────────── */
table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.85rem;
  margin: 12px 0;
}
th, td {
  text-align: left;
  padding: 8px 10px;
  border-bottom: 1px solid var(--border);
  vertical-align: top;
}
th { color: var(--green); border-bottom: 1px solid var(--green-dim); }

code.inline {
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 1px 6px;
  font-size: 0.8rem;
  color: var(--green);
}

/* ── project cards ───────────────────────────────────── */
.grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin: 16px 0;
}
.card {
  background: var(--bg-panel);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 16px 18px;
  transition: border-color 0.15s, transform 0.15s, box-shadow 0.15s;
}
.card:hover {
  border-color: var(--green-dim);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.35);
}
.card h4 { margin-bottom: 6px; font-size: 0.95rem; }
.card p { margin: 4px 0; font-size: 0.8rem; color: var(--text-dim); }
.card .badges { margin-top: 8px; display: flex; flex-wrap: wrap; gap: 6px; }
.badge {
  font-size: 0.65rem;
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 1px 7px;
  color: var(--accent);
}

/* ── hero ───────────────────────────────────────────── */
.hero { margin-bottom: 8px; }
.hero .title { color: var(--green); font-size: 2rem; font-weight: 700; letter-spacing: 1px; }
/* punto rojo TrackPoint ThinkPad */
.tp {
  display: inline-block;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--tp-red);
  margin-right: 8px;
  vertical-align: middle;
  box-shadow: 0 0 6px rgba(226, 35, 26, 0.6);
}
.hero .tagline { color: var(--text-dim); margin-top: 4px; }
.hero .arrow { color: var(--text-dim); }

/* ── buttons ─────────────────────────────────────────── */
.btn {
  display: inline-block;
  background: var(--green);
  color: #04121c;
  font-weight: 700;
  padding: 10px 18px;
  border-radius: 6px;
  border: 1px solid var(--green);
  margin: 6px 6px 6px 0;
  transition: filter 0.15s;
}
.btn:hover { filter: brightness(1.15); text-decoration: none; }
.btn.ghost {
  background: transparent;
  color: var(--text);
  border-color: var(--border);
}

/* ── blink cursor ───────────────────────────────────── */
.blink { animation: blink 1.1s steps(2) infinite; color: var(--green); }
@keyframes blink { 50% { opacity: 0; } }

/* ── footer ─────────────────────────────────────────── */
.footer {
  max-width: 900px;
  margin: 0 auto;
  padding: 24px;
  display: flex;
  gap: 16px;
  align-items: center;
  justify-content: center;
  border-top: 1px solid var(--border);
  font-size: 0.75rem;
  flex-wrap: wrap;
}

/* ── responsive ──────────────────────────────────────── */
@media (max-width: 600px) {
  body { font-size: 14px; }
  .wrap { padding: 24px 16px 60px; }

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

  /* tablas: scroll horizontal en vez de aplastarse */
  table { display: block; overflow-x: auto; white-space: nowrap; }

  /* hero escala */
  .hero .title { font-size: 1.5rem; }

  /* nav compacto */
  .nav { gap: 4px 14px; font-size: 0.8rem; }

  .footer { flex-direction: column; gap: 6px; text-align: center; }
}