/* Reflector Operator Guide -- page-specific styles.
   Relies on tokens already defined in style.css (--bg, --surface, --border,
   --text, --text-muted, --link, --clr-<mode>, --radius, --shadow*, etc). */

:root {
  --op-ok:          #0d9488;
  --op-warn:        #b45309;
  --op-warn-bg:     #fef3c7;
  --op-warn-border: #fcd34d;
  --op-crit:        #be123c;
  --op-crit-bg:     rgba(225,29,72,0.08);
  --op-crit-border: rgba(190,18,60,0.45);
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --op-ok:          #34d399;
    --op-warn:        #fbbf24;
    --op-warn-bg:     #422006;
    --op-warn-border: #92400e;
    --op-crit:        #fb7185;
    --op-crit-bg:     rgba(251,113,133,0.1);
    --op-crit-border: rgba(251,113,133,0.35);
  }
}
:root[data-theme="dark"] {
  --op-ok:          #34d399;
  --op-warn:        #fbbf24;
  --op-warn-bg:     #422006;
  --op-warn-border: #92400e;
  --op-crit:        #fb7185;
  --op-crit-bg:     rgba(251,113,133,0.1);
  --op-crit-border: rgba(251,113,133,0.35);
}

.op-shell { max-width: 980px; margin: 0 auto; padding: 0 1.5rem 5rem; }

/* ---- Header ---- */
header.op-top {
  background: var(--hdr-bg);
  border-bottom: 1px solid var(--border);
  padding: 2.6rem 1.5rem 2.2rem;
  margin-bottom: 2.5rem;
  position: relative;
}
header.op-top .op-inner { max-width: 980px; margin: 0 auto; }
.op-eyebrow {
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  color: var(--hdr-text);
  display: flex;
  align-items: center;
  gap: 0.55rem;
  margin-bottom: 0.7rem;
}
.op-eyebrow a { color: var(--hdr-text); text-decoration: underline; text-underline-offset: 2px; }
h1.op-page-title {
  font-size: clamp(1.7rem, 3.2vw, 2.35rem);
  font-weight: 650;
  letter-spacing: -0.01em;
  color: var(--text);
  text-wrap: balance;
  margin: 0 0 0.6rem;
  max-width: 34ch;
}
.op-page-sub {
  color: var(--text-muted);
  font-size: 1.02rem;
  max-width: 62ch;
  margin: 0;
}
header.op-top .theme-btn { position: absolute; top: 1.5rem; right: 1.5rem; }

/* ---- Intro / stakes ---- */
.op-stakes {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  margin-bottom: 2.75rem;
  box-shadow: var(--shadow-sm);
}
.op-stakes .op-cell { background: var(--surface); padding: 1.15rem 1.3rem; }
.op-stakes .op-cell .op-n { font-size: 1.5rem; font-weight: 650; font-variant-numeric: tabular-nums; }
.op-stakes .op-cell .op-l { font-size: 0.82rem; color: var(--text-muted); margin-top: 0.15rem; }

.op-lede { max-width: 68ch; margin-bottom: 2.75rem; }
.op-lede p { margin: 0 0 0.9rem; color: var(--text); }
.op-lede p.op-muted { color: var(--text-muted); font-size: 0.95rem; }

/* ---- Requirements grid ---- */
h2.op-section-title { font-size: 1.05rem; font-weight: 650; letter-spacing: -0.005em; margin: 0 0 0.3rem; }
p.op-section-sub { color: var(--text-muted); font-size: 0.9rem; margin: 0 0 1.1rem; max-width: 62ch; }

.op-reqs {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
  gap: 0.9rem;
  margin-bottom: 3rem;
}
.op-req-card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 1.1rem 1.2rem; }
.op-req-card .op-req-icon {
  width: 1.9rem; height: 1.9rem;
  display: flex; align-items: center; justify-content: center;
  border-radius: 6px;
  background: var(--row-hover);
  color: var(--link);
  margin-bottom: 0.6rem;
}
.op-req-card .op-req-icon svg { flex-shrink: 0; }
.op-req-card h3 { font-size: 0.92rem; font-weight: 600; margin: 0 0 0.35rem; }
.op-req-card p { font-size: 0.85rem; color: var(--text-muted); margin: 0; }
.op-req-card code { font-size: 0.82rem; background: var(--row-hover); padding: 0.05rem 0.35rem; border-radius: 4px; color: var(--text); }

/* ---- Nav rail ---- */
nav.op-proto-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 3rem;
  padding: 1rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}
nav.op-proto-nav a {
  font-size: 0.82rem;
  font-weight: 600;
  padding: 0.35rem 0.7rem;
  border-radius: 999px;
  background: var(--row-hover);
  color: var(--text);
  border: 1px solid transparent;
  text-decoration: none;
}
nav.op-proto-nav a:hover { border-color: var(--border); text-decoration: none; }
nav.op-proto-nav a .op-dot { display: inline-block; width: 0.5rem; height: 0.5rem; border-radius: 50%; margin-right: 0.4rem; vertical-align: middle; }

/* ---- Protocol cards ---- */
.op-proto {
  border: 1px solid var(--border);
  border-left: 3px solid var(--proto-color, var(--link));
  border-radius: var(--radius);
  background: var(--surface);
  padding: 1.6rem 1.7rem 1.7rem;
  margin-bottom: 1.6rem;
  scroll-margin-top: 1.5rem;
}
.op-proto-head { display: flex; align-items: baseline; gap: 0.7rem; flex-wrap: wrap; margin-bottom: 0.2rem; }
.op-proto-head h2 { font-size: 1.2rem; font-weight: 650; color: var(--proto-color, var(--text)); margin: 0; }
.op-proto-head .op-proto-tag { font-size: 0.74rem; font-weight: 600; letter-spacing: 0.04em; text-transform: uppercase; color: var(--text-muted); }
.op-proto-head .op-gate-tag {
  margin-left: auto;
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--op-warn);
  background: var(--op-warn-bg);
  border: 1px solid var(--op-warn-border);
  border-radius: 999px;
  padding: 0.1rem 0.55rem;
  white-space: nowrap;
}
.op-proto-what { color: var(--text-muted); font-size: 0.92rem; margin: 0.2rem 0 1.1rem; max-width: 62ch; }

.op-flow {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.95rem 1.1rem;
  margin-bottom: 1.1rem;
  overflow-x: auto;
}
.op-flow .op-step { display: grid; grid-template-columns: 5.6rem 1fr; gap: 0.7rem; font-size: 0.83rem; align-items: baseline; white-space: nowrap; }
.op-flow .op-who { color: var(--text-muted); font-weight: 600; font-size: 0.74rem; text-transform: uppercase; letter-spacing: 0.03em; }
.op-flow .op-who.op-us { color: var(--link); }
.op-flow .op-who.op-them { color: var(--proto-color, var(--text)); }
.op-flow .op-pkt { font-family: 'Roboto Mono', monospace; font-size: 0.83rem; white-space: normal; }
.op-flow .op-pkt b { color: var(--text); }
.op-flow .op-up-tag {
  display: inline-block;
  font-family: 'Jost', system-ui, sans-serif;
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.03em;
  color: var(--op-ok);
  border: 1px solid var(--op-ok);
  border-radius: 999px;
  padding: 0.02rem 0.5rem;
  margin-left: 0.5rem;
  vertical-align: middle;
}

.op-proto-notes { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
@media (max-width: 700px) { .op-proto-notes { grid-template-columns: 1fr; } }
.op-note-block { font-size: 0.85rem; }
.op-note-block .op-note-label { font-size: 0.7rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.05em; margin-bottom: 0.3rem; display: block; }
.op-note-block.op-fail .op-note-label { color: var(--op-crit); }
.op-note-block.op-fix .op-note-label { color: var(--op-ok); }
.op-note-block p { margin: 0; color: var(--text); }
.op-note-block code { background: var(--row-hover); padding: 0.02rem 0.35rem; border-radius: 4px; font-size: 0.82rem; }

/* ---- Callout ---- */
.op-callout {
  border: 1px solid var(--op-warn-border);
  background: var(--op-warn-bg);
  border-radius: var(--radius);
  padding: 1.1rem 1.3rem;
  margin: 0.5rem 0 3rem;
  font-size: 0.9rem;
}
.op-callout .op-callout-label { font-size: 0.72rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.05em; color: var(--op-warn); display: block; margin-bottom: 0.4rem; }
.op-callout p { margin: 0 0 0.5rem; color: var(--text); }
.op-callout p:last-child { margin-bottom: 0; }

.op-callout-info { border: 1.5px solid var(--op-crit-border); background: var(--op-crit-bg); }
.op-callout-info .op-callout-label { color: var(--op-crit); }
.op-callout-info p strong { color: var(--op-crit); }

/* ---- Self-test ---- */
.op-selftest { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 1.6rem 1.7rem; margin: 3rem 0; }
.op-selftest h2 { font-size: 1.05rem; margin: 0 0 0.4rem; }
.op-selftest p { color: var(--text-muted); font-size: 0.9rem; max-width: 60ch; margin: 0 0 1rem; }
.op-code-block {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.85rem 1rem;
  font-family: 'Roboto Mono', monospace;
  font-size: 0.82rem;
  overflow-x: auto;
  color: var(--text);
}
.op-code-block .op-c1 { color: var(--text-muted); }

/* ---- Footer ---- */
footer.op-ftr {
  border-top: 1px solid var(--border);
  padding-top: 1.5rem;
  margin-top: 1rem;
  color: var(--text-muted);
  font-size: 0.83rem;
}
footer.op-ftr a { color: var(--link); }