/* Shared styles for the concept pages (claude-md-vs-spec-vs-plan and siblings). */
:root { --bg: #0f172a; --panel: #111827; --bd: #1f2937; --tx: #e2e8f0; --mut: #94a3b8; --acc: #22c55e; }
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--tx); font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif; line-height: 1.65; }
a { color: var(--acc); }
.nav { display: flex; align-items: center; justify-content: space-between; padding: 1rem 1.5rem; border-bottom: 1px solid var(--bd); }
.nav-brand { display: flex; align-items: center; gap: .6rem; text-decoration: none; color: var(--tx); font-weight: 700; }
.nav-brand img { width: 32px; height: 32px; }
.btn-signin { color: var(--mut); text-decoration: none; font-size: .9rem; }
.wrap { max-width: 720px; margin: 0 auto; padding: 3rem 1.25rem 4rem; }
h1 { font-size: 2rem; line-height: 1.2; margin: 0 0 1rem; letter-spacing: -0.02em; }
h2 { font-size: 1.3rem; margin: 2.2rem 0 .6rem; }
.lead { color: var(--mut); font-size: 1.1rem; }
p { margin: 0 0 1rem; }
table { width: 100%; border-collapse: collapse; margin: 1rem 0 1.25rem; font-size: .95rem; }
th, td { text-align: left; padding: .55rem .6rem; border-bottom: 1px solid var(--bd); vertical-align: top; }
th { color: var(--mut); font-weight: 600; }
.cta a { display: inline-block; background: var(--acc); color: #0f172a; font-weight: 700; padding: .75rem 1.25rem; border-radius: .6rem; text-decoration: none; }
footer { border-top: 1px solid var(--bd); padding: 1.5rem; color: var(--mut); font-size: .85rem; text-align: center; }
footer a { color: var(--mut); margin: 0 .4rem; }

.capture { margin: 2.5rem 0 0; padding: 1.25rem; border: 1px solid var(--bd); border-radius: .75rem; background: var(--panel); }
.capture label { display: block; color: var(--mut); font-size: .95rem; margin-bottom: .6rem; }
.capture-row { display: flex; gap: .5rem; flex-wrap: wrap; }
.capture input { flex: 1 1 220px; padding: .6rem .75rem; border-radius: .5rem; border: 1px solid var(--bd); background: var(--bg); color: var(--tx); font-size: .95rem; }
.capture button { padding: .6rem 1rem; border-radius: .5rem; border: 0; background: var(--acc); color: #0f172a; font-weight: 600; cursor: pointer; }
.capture p { margin: 0; color: var(--acc); }