/* Fibernetics / Eyesurf support guides — agent console.
   Shared by the home page and every guide. */

:root {
  --ground:    #eef1f4;
  --surface:   #ffffff;
  --ink:       #152331;
  --ink-soft:  #51616f;
  --ink-faint: #8995a1;
  --line:      #1c74b8;
  --line-pale: #dde9f3;
  --line-dim:  #bcd3e6;
  --rule:      #dbe2e8;
  --go:        #2e7d4f;
  --amber:     #f0a03c;
  --escalate:  #b8441c;

  --rail-w: 17rem;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--ground);
  color: var(--ink);
  font: 400 16px/1.55 'IBM Plex Sans', system-ui, -apple-system, 'Segoe UI', sans-serif;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--line); }

:focus-visible {
  outline: 2px solid var(--line);
  outline-offset: 2px;
  border-radius: 2px;
}

/* ---------- header ---------- */

.masthead {
  display: flex;
  align-items: baseline;
  gap: 1rem;
  flex-wrap: wrap;
  padding: 1.15rem 1.5rem;
  background: var(--ink);
  color: #f2f6f4;
}

.brand-mark { display: block; flex: none; }

.masthead h1 {
  margin: 0;
  font-size: 1.0625rem;
  font-weight: 600;
  letter-spacing: -0.005em;
}

.masthead p {
  margin: 0;
  font-size: 0.8125rem;
  color: #9db2c2;
}

.back-home {
  font-size: 0.8125rem;
  color: #9db2c2;
  text-decoration: none;
}
.back-home:hover { color: #fff; }

.masthead-actions {
  margin-left: auto;
  display: flex;
  gap: 0.5rem;
}

.ghost {
  font: inherit;
  font-size: 0.8125rem;
  color: #cfe0ea;
  background: transparent;
  border: 1px solid #2d4050;
  border-radius: 3px;
  padding: 0.32rem 0.7rem;
  cursor: pointer;
}

.ghost:hover { background: #1f3245; color: #fff; }

/* ---------- home page ---------- */

.home-shell {
  max-width: 68rem;
  margin: 0 auto;
  padding: 2rem 1.5rem;
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(16rem, 1fr));
  gap: 1rem;
}

.card {
  display: block;
  background: var(--surface);
  border: 1px solid var(--rule);
  border-top: 3px solid var(--line);
  border-radius: 4px;
  padding: 1.25rem 1.4rem;
  text-decoration: none;
  color: var(--ink);
  transition: box-shadow 120ms ease, transform 120ms ease;
}

.card:hover {
  box-shadow: 0 4px 14px rgba(15, 33, 31, 0.08);
  transform: translateY(-1px);
}

.card h2 {
  margin: 0 0 0.4rem;
  font-size: 1.0625rem;
  font-weight: 600;
}

.card-desc {
  margin: 0 0 0.6rem;
  font-size: 0.875rem;
  color: var(--ink-soft);
}

.card-meta {
  margin: 0;
  font: 500 0.75rem 'IBM Plex Mono', ui-monospace, monospace;
  color: var(--ink-faint);
}

.error { color: var(--escalate); padding: 1rem 1.5rem; }

/* ---------- shell ---------- */

.shell {
  max-width: 68rem;
  margin: 0 auto;
  padding: 1.5rem;
  display: grid;
  grid-template-columns: var(--rail-w) minmax(0, 1fr);
  gap: 1.5rem;
  align-items: start;
}

/* ---------- rail ---------- */

.rail {
  position: sticky;
  top: 1.5rem;
  font-size: 0.875rem;
}

.rail-list {
  list-style: none;
  margin: 0;
  padding: 0 0 0 1.4rem;
  position: relative;
}

.rail-list::before {
  content: '';
  position: absolute;
  left: 0.3125rem;
  top: 0.75rem;
  bottom: 0.75rem;
  width: 2px;
  background: var(--line-dim);
}

.rail-item {
  position: relative;
  padding: 0.28rem 0;
}

.rail-item::before {
  content: '';
  position: absolute;
  left: -1.4rem;
  top: 0.72rem;
  width: 0.75rem;
  height: 0.75rem;
  border-radius: 50%;
  background: var(--ground);
  border: 2px solid var(--line-dim);
}

.rail-item.is-done::before { background: var(--line); border-color: var(--line); }

.rail-item.is-current::before {
  background: var(--surface);
  border-color: var(--line);
  border-width: 4px;
  width: 0.9375rem;
  height: 0.9375rem;
  left: -1.5rem;
  top: 0.63rem;
  box-shadow: 0 0 0 3px rgba(28, 116, 184, 0.18);
}

.rail-btn {
  font: inherit;
  text-align: left;
  background: none;
  border: 0;
  padding: 0;
  color: var(--ink-soft);
  cursor: pointer;
  line-height: 1.35;
}

.rail-btn:disabled { cursor: default; color: var(--ink-faint); }
.rail-item.is-done .rail-btn:not(:disabled):hover { color: var(--line); text-decoration: underline; }
.rail-item.is-current .rail-btn { color: var(--ink); font-weight: 600; }

.rail-node {
  font: 500 0.6875rem/1 'IBM Plex Mono', ui-monospace, monospace;
  color: var(--ink-faint);
  background: var(--line-pale);
  border-radius: 2px;
  padding: 0.15rem 0.3rem;
  margin-right: 0.4rem;
  vertical-align: 0.05em;
}

/* ---------- step panel ---------- */

.step {
  background: var(--surface);
  border: 1px solid var(--rule);
  border-radius: 4px;
  border-top: 3px solid var(--line);
  padding: 1.75rem;
  animation: rise 200ms ease-out;
}

.step.kind-failure { border-top-color: var(--escalate); }

.step-flag {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  padding: 0.2rem 0.5rem;
  border-radius: 3px;
  margin-bottom: 0.9rem;
  background: #f8e4da;
  color: var(--escalate);
}

.step h2 {
  margin: 0 0 1.1rem;
  font-size: 1.5rem;
  font-weight: 600;
  line-height: 1.25;
  letter-spacing: -0.015em;
  max-width: 42ch;
}

.step-id {
  float: right;
  font: 500 0.6875rem/1 'IBM Plex Mono', ui-monospace, monospace;
  color: var(--ink-faint);
  margin-left: 1rem;
}

/* ---------- rich content body (from guide authoring) ---------- */

.step-body { max-width: 68ch; margin-bottom: 1.25rem; }
.step-body p { margin: 0 0 1rem; }
.step-body p:last-child { margin-bottom: 0; }
.step-body ul, .step-body ol { margin: 0 0 1rem; padding-left: 1.4rem; }
.step-body li { margin-bottom: 0.35rem; }
.step-body strong { font-weight: 600; }
.step-body mark { background: #fbe3b8; padding: 0 0.15rem; }
.step-body img { max-width: 100%; border-radius: 4px; border: 1px solid var(--rule); margin: 0.5rem 0; }
.step-body video { max-width: 100%; border-radius: 4px; margin: 0.5rem 0; }
.step-body a { color: var(--line); }

/* ---------- form fields ---------- */

.formfields {
  margin: 0 0 1.5rem;
  padding: 1rem 1.1rem;
  background: var(--ground);
  border-radius: 4px;
  display: grid;
  gap: 0.6rem;
}

.field-label {
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--ink-soft);
  display: block;
  margin-bottom: 0.2rem;
}

.formfields select,
.formfields input[type="text"] {
  font: inherit;
  font-size: 0.9375rem;
  padding: 0.4rem 0.6rem;
  border: 1px solid var(--line-dim);
  border-radius: 3px;
  background: var(--surface);
  color: var(--ink);
  max-width: 22rem;
  width: 100%;
}

.radio-opt {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  margin-right: 1rem;
  font-size: 0.9375rem;
}

/* ---------- answers ---------- */

.answers {
  margin-top: 1.75rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--rule);
}

.answers-q {
  margin: 0 0 0.9rem;
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--ink);
}

.answers-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(15rem, 1fr));
  gap: 0.6rem;
}

.answer {
  font: inherit;
  font-weight: 500;
  text-align: left;
  background: var(--surface);
  color: var(--ink);
  border: 1px solid var(--line-dim);
  border-left: 3px solid var(--line);
  border-radius: 4px;
  padding: 0.7rem 1rem;
  cursor: pointer;
  transition: background 120ms ease, border-color 120ms ease;
}

.answer:hover { background: var(--line-pale); border-color: var(--line); }

.end-note {
  margin: 0 0 0.8rem;
  color: var(--ink-soft);
  font-size: 0.9375rem;
}

.restart {
  font: inherit;
  font-size: 0.875rem;
  color: var(--line);
  background: none;
  border: 0;
  padding: 0.4rem 0;
  cursor: pointer;
  text-decoration: underline;
}

/* ---------- motion ---------- */

@keyframes rise {
  from { opacity: 0; transform: translateY(4px); }
  to   { opacity: 1; transform: none; }
}

@media (prefers-reduced-motion: reduce) {
  .step { animation: none; }
  .answer { transition: none; }
}

/* ---------- narrow ---------- */

@media (max-width: 56rem) {
  .shell {
    grid-template-columns: minmax(0, 1fr);
    padding: 1rem;
    gap: 1rem;
  }

  #step { order: 1; }

  .rail {
    order: 2;
    position: static;
    background: var(--surface);
    border: 1px solid var(--rule);
    border-radius: 4px;
    padding: 0.9rem 1rem;
  }

  .rail::before {
    content: 'Where you are';
    display: block;
    font-size: 0.8125rem;
    font-weight: 600;
    color: var(--ink);
    margin-bottom: 0.8rem;
  }

  .step { padding: 1.25rem; }
  .step h2 { font-size: 1.25rem; }
  .answers-list { grid-template-columns: minmax(0, 1fr); }
  .masthead { padding: 0.9rem 1rem; }
}