/* CDS Onboarding Guide — shared styles */

:root {
  --ink:       #1a1a1a;
  --ink-light: #4a4a4a;
  --ink-muted: #767676;
  --border:    #d8d8d8;
  --bg:        #ffffff;
  --bg-subtle: #f7f7f7;
  --bg-code:   #f3f3f3;

  --blue:      #0073bb;
  --blue-dark: #005a94;
  --blue-bg:   #eaf4fb;

  --green:     #1a7a3c;
  --green-bg:  #edf7f1;

  --amber:     #7a5200;
  --amber-bg:  #fdf6e3;

  --red:       #8b1a1a;
  --red-bg:    #fdf2f2;

  --phase-1: #0073bb;
  --phase-2: #0073bb;
  --phase-3: #0073bb;
  --phase-4: #1a7a3c;
  --phase-5: #7a5200;
  --phase-6: #7a5200;
  --phase-7: #7a5200;
  --phase-8: #5a3e7a;

  --radius: 4px;
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-mono: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
}

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

html { font-size: 16px; scroll-behavior: smooth; }

body {
  font-family: var(--font-sans);
  color: var(--ink);
  background: var(--bg);
  margin: 0;
  line-height: 1.6;
}

/* ── Layout ── */

.site-header {
  background: var(--ink);
  color: #fff;
  padding: 0 2rem;
  display: flex;
  align-items: center;
  gap: 2rem;
  height: 52px;
  position: sticky;
  top: 0;
  z-index: 100;
}

.site-header .wordmark {
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: #fff;
  text-decoration: none;
  white-space: nowrap;
}

.site-header nav { display: flex; gap: 0; flex: 1; }

.site-header nav a {
  color: rgba(255,255,255,0.75);
  text-decoration: none;
  font-size: 0.875rem;
  padding: 0 0.9rem;
  height: 52px;
  display: flex;
  align-items: center;
  border-bottom: 3px solid transparent;
  transition: color 0.1s, border-color 0.1s;
}

.site-header nav a:hover { color: #fff; }
.site-header nav a.active { color: #fff; border-bottom-color: #fff; }

.page-wrap {
  max-width: 860px;
  margin: 0 auto;
  padding: 2.5rem 2rem 5rem;
}

/* ── Typography ── */

h1 { font-size: 1.9rem; font-weight: 700; line-height: 1.25; margin: 0 0 0.5rem; }
h2 { font-size: 1.35rem; font-weight: 700; margin: 2.5rem 0 0.75rem; padding-top: 2rem; border-top: 1px solid var(--border); }
h2:first-of-type { border-top: none; padding-top: 0; }
h3 { font-size: 1.05rem; font-weight: 700; margin: 1.75rem 0 0.5rem; }
h4 { font-size: 0.95rem; font-weight: 700; margin: 1.25rem 0 0.4rem; }

p { margin: 0 0 1rem; }
p + p { margin-top: -0.25rem; }

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

ul, ol { margin: 0 0 1rem; padding-left: 1.5rem; }
li { margin-bottom: 0.3rem; }
li > ul, li > ol { margin-top: 0.3rem; margin-bottom: 0; }

strong { font-weight: 700; }
em { font-style: italic; }

code {
  font-family: var(--font-mono);
  font-size: 0.875em;
  background: var(--bg-code);
  padding: 0.1em 0.35em;
  border-radius: var(--radius);
  border: 1px solid var(--border);
}

pre {
  background: var(--bg-code);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1rem 1.25rem;
  overflow-x: auto;
  margin: 0 0 1.25rem;
  font-size: 0.85rem;
  line-height: 1.55;
}

pre code {
  background: none;
  border: none;
  padding: 0;
  font-size: 1em;
}

hr {
  border: none;
  border-top: 1px solid var(--border);
  margin: 2rem 0;
}

/* ── Tables ── */

.table-wrap { overflow-x: auto; margin: 0 0 1.5rem; }

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
}

th {
  background: var(--bg-subtle);
  font-weight: 600;
  text-align: left;
  padding: 0.55rem 0.8rem;
  border: 1px solid var(--border);
}

td {
  padding: 0.5rem 0.8rem;
  border: 1px solid var(--border);
  vertical-align: top;
}

tr:nth-child(even) td { background: var(--bg-subtle); }

/* ── Phase badge ── */

.phase-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  background: var(--blue-bg);
  color: var(--blue-dark);
  border: 1px solid #b8d9ef;
  border-radius: 3px;
  padding: 0.2rem 0.55rem;
  margin-bottom: 0.5rem;
}

.phase-badge.green { background: var(--green-bg); color: var(--green); border-color: #a8d8b8; }
.phase-badge.amber { background: var(--amber-bg); color: var(--amber); border-color: #e8d090; }
.phase-badge.purple { background: #f3eeff; color: #5a3e7a; border-color: #c8b0e8; }

/* ── Callouts ── */

.callout {
  border-left: 4px solid var(--border);
  border-radius: 0 var(--radius) var(--radius) 0;
  padding: 0.85rem 1rem;
  margin: 0 0 1.25rem;
  font-size: 0.9rem;
}

.callout > :last-child { margin-bottom: 0; }

.callout .callout-label {
  font-weight: 700;
  font-size: 0.8rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  margin-bottom: 0.35rem;
}

.callout.note { background: var(--blue-bg); border-color: var(--blue); }
.callout.note .callout-label { color: var(--blue-dark); }

.callout.tip { background: var(--green-bg); border-color: var(--green); }
.callout.tip .callout-label { color: var(--green); }

.callout.warning { background: var(--amber-bg); border-color: var(--amber); }
.callout.warning .callout-label { color: var(--amber); }

.callout.critical { background: var(--red-bg); border-color: var(--red); }
.callout.critical .callout-label { color: var(--red); }

/* ── Agent callout (special) ── */

.agent-callout {
  background: #f0f4ff;
  border: 1px solid #b0c4f0;
  border-left: 4px solid #3060c0;
  border-radius: 0 var(--radius) var(--radius) 0;
  padding: 0.85rem 1rem;
  margin: 0 0 1.25rem;
  font-size: 0.9rem;
}

.agent-callout .agent-label {
  font-weight: 700;
  font-size: 0.8rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: #3060c0;
  margin-bottom: 0.35rem;
}

.agent-callout > :last-child { margin-bottom: 0; }

/* ── Phase overview cards (index page) ── */

.phase-list { list-style: none; padding: 0; margin: 0 0 2rem; }

.phase-list li {
  display: grid;
  grid-template-columns: 2.5rem 1fr;
  gap: 0 1rem;
  align-items: start;
  padding: 0.85rem 0;
  border-bottom: 1px solid var(--border);
}

.phase-list li:first-child { border-top: 1px solid var(--border); }

.phase-num {
  width: 2rem;
  height: 2rem;
  border-radius: 50%;
  background: var(--blue);
  color: #fff;
  font-weight: 700;
  font-size: 0.85rem;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  margin-top: 0.1rem;
}

.phase-num.green  { background: var(--green); }
.phase-num.amber  { background: #c87800; }
.phase-num.purple { background: #5a3e7a; }

.phase-item-title { font-weight: 700; margin-bottom: 0.15rem; }
.phase-item-meta { font-size: 0.85rem; color: var(--ink-muted); }

/* ── Checklist ── */

.checklist { list-style: none; padding: 0; margin: 0 0 1.25rem; }
.checklist li {
  padding: 0.3rem 0 0.3rem 1.75rem;
  position: relative;
  border-bottom: 1px solid var(--border);
}
.checklist li:first-child { border-top: 1px solid var(--border); }
.checklist li::before {
  content: "☐";
  position: absolute;
  left: 0.1rem;
  color: var(--ink-muted);
}

/* ── Artifact card row ── */

.artifact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; margin: 0 0 1.5rem; }

@media (max-width: 600px) { .artifact-grid { grid-template-columns: 1fr; } }

.artifact-card {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 0.9rem 1rem;
}

.artifact-card .artifact-name {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--blue-dark);
  margin-bottom: 0.3rem;
}

.artifact-card p { font-size: 0.875rem; margin: 0; }

/* ── Page hero ── */

.page-hero {
  padding: 1.75rem 0 1.5rem;
  margin-bottom: 2rem;
  border-bottom: 1px solid var(--border);
}

.page-hero .eyebrow {
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  color: var(--ink-muted);
  margin-bottom: 0.4rem;
}

.page-hero p {
  font-size: 1.05rem;
  color: var(--ink-light);
  max-width: 640px;
  margin: 0.5rem 0 0;
}

/* ── Step number inline ── */

.step-section { margin-bottom: 2.5rem; }

.step-heading {
  display: flex;
  align-items: baseline;
  gap: 0.75rem;
  margin-bottom: 0.6rem;
}

.step-heading h2 {
  margin: 0;
  border: none;
  padding: 0;
}

/* ── Ordered substep list ── */

.substeps { counter-reset: substep; list-style: none; padding: 0; margin: 0 0 1.25rem; }
.substeps li {
  counter-increment: substep;
  padding: 0.5rem 0 0.5rem 2.25rem;
  position: relative;
  border-bottom: 1px solid var(--border);
}
.substeps li:first-child { border-top: 1px solid var(--border); }
.substeps li::before {
  content: counter(substep);
  position: absolute;
  left: 0;
  top: 0.55rem;
  width: 1.5rem;
  height: 1.5rem;
  background: var(--bg-subtle);
  border: 1px solid var(--border);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--ink-muted);
}

/* ── Prev / next nav ── */

.page-nav {
  display: flex;
  justify-content: space-between;
  margin-top: 3rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border);
  gap: 1rem;
}

.page-nav a {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--blue);
}

.page-nav .prev::before { content: "← "; }
.page-nav .next::after  { content: " →"; }
.page-nav .next { margin-left: auto; }

/* ── Footer ── */

.site-footer {
  background: var(--bg-subtle);
  border-top: 1px solid var(--border);
  padding: 1.25rem 2rem;
  font-size: 0.8rem;
  color: var(--ink-muted);
  text-align: center;
}

/* ── Utility ── */

.text-muted { color: var(--ink-muted); }
.mono { font-family: var(--font-mono); font-size: 0.875em; }
.mb0 { margin-bottom: 0; }