/* ============================================================
   Claude Code Field Guide — warm terminal design system
   ivory page, coral accent, charcoal terminal windows
   ============================================================ */

:root {
  --bg: #FAF6EF;
  --bg-raised: #FFFDF8;
  --sidebar-bg: #F4EEE3;
  --ink: #211E1B;
  --ink-soft: #57504A;
  --muted: #837A70;
  --coral: #D97757;
  --coral-deep: #BC5B3D;
  --coral-wash: #F7E7DF;
  --sand: #E8DFD2;
  --sand-deep: #D9CDBB;
  --term: #26211E;
  --term-edge: #3B342E;
  --term-text: #EFE9DF;
  --term-dim: #9C948A;
  --green: #7FB069;
  --red-soft: #D08770;
  --amber: #D9A45B;
  --radius: 12px;
  --mono: 'IBM Plex Mono', ui-monospace, 'SF Mono', Menlo, monospace;
  --sans: 'IBM Plex Sans', system-ui, -apple-system, sans-serif;
  --display: 'Space Grotesk', var(--sans);
  --sidebar-w: 268px;
  --shadow: 0 1px 2px rgba(33, 30, 27, .05), 0 8px 24px -12px rgba(33, 30, 27, .18);
  --shadow-term: 0 2px 4px rgba(33, 30, 27, .12), 0 20px 44px -18px rgba(33, 30, 27, .38);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; scroll-padding-top: 2rem; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 16.5px;
  line-height: 1.62;
  -webkit-font-smoothing: antialiased;
}

::selection { background: var(--coral-wash); color: var(--coral-deep); }

:focus-visible { outline: 2px solid var(--coral); outline-offset: 2px; border-radius: 4px; }

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

.shell { display: flex; min-height: 100vh; }

.main {
  flex: 1;
  min-width: 0;
  margin-left: var(--sidebar-w);
  display: flex;
  justify-content: center;
  gap: 2.5rem;
  padding: 0 2.25rem;
}

.content {
  width: 100%;
  max-width: 46rem;
  padding: 3.25rem 0 5rem;
}

.content > * + * { margin-top: 1.1rem; }

/* ---------- sidebar ---------- */

.sidebar {
  position: fixed;
  inset: 0 auto 0 0;
  width: var(--sidebar-w);
  background: var(--sidebar-bg);
  border-right: 1px solid var(--sand);
  display: flex;
  flex-direction: column;
  z-index: 40;
  overflow-y: auto;
  overscroll-behavior: contain;
}

.brand {
  display: flex;
  align-items: center;
  gap: .6rem;
  padding: 1.35rem 1.25rem 1.1rem;
  text-decoration: none;
  color: var(--ink);
}

.brand .spark {
  color: var(--coral);
  font-size: 1.35rem;
  line-height: 1;
  transform: translateY(1px);
}

.brand b {
  font-family: var(--display);
  font-weight: 700;
  font-size: 1.02rem;
  letter-spacing: -.01em;
  display: block;
  line-height: 1.15;
}

.brand small {
  display: block;
  font-family: var(--mono);
  font-size: .68rem;
  color: var(--muted);
  letter-spacing: .06em;
  text-transform: uppercase;
}

.search-btn {
  margin: 0 1.1rem .9rem;
  display: flex;
  align-items: center;
  gap: .55rem;
  padding: .5rem .75rem;
  background: var(--bg-raised);
  border: 1px solid var(--sand);
  border-radius: 9px;
  font-family: var(--sans);
  font-size: .84rem;
  color: var(--muted);
  cursor: pointer;
  transition: border-color .15s, color .15s;
}

.search-btn:hover { border-color: var(--coral); color: var(--ink-soft); }
.search-btn .kbd { margin-left: auto; }

.nav-group { padding: .35rem 0 .8rem; }

.nav-label {
  font-family: var(--mono);
  font-size: .66rem;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--muted);
  padding: .35rem 1.35rem .3rem;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: .65rem;
  padding: .42rem 1.05rem .42rem 1.35rem;
  margin: 0 .55rem;
  border-radius: 8px;
  text-decoration: none;
  color: var(--ink-soft);
  font-size: .9rem;
  line-height: 1.3;
  transition: background .15s, color .15s;
}

.nav-item:hover { background: rgba(217, 119, 87, .09); color: var(--ink); }

.nav-item.active {
  background: var(--coral-wash);
  color: var(--coral-deep);
  font-weight: 600;
}

.nav-item .num {
  font-family: var(--mono);
  font-size: .72rem;
  color: var(--muted);
  width: 1.15rem;
  flex-shrink: 0;
}

.nav-item.active .num { color: var(--coral); }

.nav-item .dot {
  margin-left: auto;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  border: 1.5px solid var(--sand-deep);
  flex-shrink: 0;
  transition: background .3s, border-color .3s;
}

.nav-item .dot.read { background: var(--coral); border-color: var(--coral); }

.sidebar-foot {
  margin-top: auto;
  padding: 1rem 1.35rem 1.2rem;
  font-size: .74rem;
  color: var(--muted);
  border-top: 1px solid var(--sand);
}
.sidebar-foot a { color: var(--coral-deep); }

/* mobile top bar + drawer */
.topbar { display: none; }

.scrim {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(33, 30, 27, .35);
  z-index: 35;
}

/* ---------- typography ---------- */

h1, h2, h3 {
  font-family: var(--display);
  letter-spacing: -.02em;
  line-height: 1.12;
  font-weight: 700;
}

h1 { font-size: clamp(2rem, 4.5vw, 2.7rem); margin: .4rem 0 .6rem; }
h2 { font-size: 1.42rem; margin: 2.6rem 0 .35rem; }
h3 { font-size: 1.08rem; margin: 1.8rem 0 .25rem; }

.eyebrow {
  font-family: var(--mono);
  font-size: .74rem;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--coral);
  font-weight: 600;
  margin: 0;
}

.lede { font-size: 1.13rem; color: var(--ink-soft); margin-top: .2rem; }

p { margin: .75rem 0; }
a { color: var(--coral-deep); text-underline-offset: 3px; }
strong { font-weight: 600; }

ul, ol { padding-left: 1.35rem; margin: .6rem 0; }
li { margin: .32rem 0; }
li::marker { color: var(--coral); }

hr { border: 0; border-top: 1px solid var(--sand); margin: 2.4rem 0; }

code {
  font-family: var(--mono);
  font-size: .86em;
  background: #F0E9DC;
  border: 1px solid var(--sand);
  border-radius: 5px;
  padding: .1em .35em;
  white-space: nowrap;
}

.kbd {
  font-family: var(--mono);
  font-size: .72rem;
  background: var(--bg-raised);
  border: 1px solid var(--sand-deep);
  border-bottom-width: 2px;
  border-radius: 5px;
  padding: .12em .42em;
  color: var(--ink-soft);
  white-space: nowrap;
}

/* ---------- terminal window (signature) ---------- */

.term {
  background: var(--term);
  border-radius: var(--radius);
  box-shadow: var(--shadow-term);
  margin: 1.6rem 0;
  overflow: hidden;
  font-family: var(--mono);
  font-size: .84rem;
  line-height: 1.65;
}

.term-bar {
  display: flex;
  align-items: center;
  gap: .45rem;
  padding: .6rem .9rem;
  background: rgba(255, 253, 248, .04);
  border-bottom: 1px solid var(--term-edge);
}

.term-bar .b-dot { width: 11px; height: 11px; border-radius: 50%; opacity: .85; }
.b-dot.r { background: #C46A5A; }
.b-dot.y { background: #C9A35C; }
.b-dot.g { background: #8AA37B; }

.term-bar .t-title {
  margin-left: .5rem;
  color: var(--term-dim);
  font-size: .74rem;
  letter-spacing: .03em;
}

.term-replay {
  margin-left: auto;
  background: none;
  border: 1px solid var(--term-edge);
  color: var(--term-dim);
  font-family: var(--mono);
  font-size: .68rem;
  border-radius: 6px;
  padding: .18rem .55rem;
  cursor: pointer;
  transition: color .15s, border-color .15s;
}
.term-replay:hover { color: var(--term-text); border-color: var(--term-dim); }

.term-body {
  padding: 1rem 1.15rem 1.15rem;
  color: var(--term-text);
  min-height: 3rem;
  white-space: pre-wrap;
  word-break: break-word;
}

.term-body .ln { display: block; min-height: 1.35em; }
.tl-prompt { color: var(--term-dim); }
.tl-cmd { color: var(--term-text); font-weight: 600; }
.tl-claude { color: var(--coral); }
.tl-dim { color: var(--term-dim); }
.tl-ok { color: var(--green); }
.tl-add { color: var(--green); }
.tl-del { color: var(--red-soft); }
.tl-warn { color: var(--amber); }

.cursor {
  display: inline-block;
  width: .55em;
  height: 1.1em;
  background: var(--coral);
  vertical-align: text-bottom;
  animation: blink 1.06s steps(1) infinite;
}

@keyframes blink { 50% { opacity: 0; } }

/* ---------- try-it / copy blocks ---------- */

.try {
  background: var(--bg-raised);
  border: 1px solid var(--sand);
  border-radius: var(--radius);
  margin: 1.4rem 0;
  overflow: hidden;
}

.try-head {
  display: flex;
  align-items: center;
  gap: .5rem;
  padding: .55rem .95rem;
  border-bottom: 1px solid var(--sand);
  font-family: var(--mono);
  font-size: .7rem;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--coral);
  font-weight: 600;
}

.try pre {
  margin: 0;
  padding: .9rem 1rem;
  overflow-x: auto;
  font-family: var(--mono);
  font-size: .84rem;
  line-height: 1.7;
}
.try pre code { background: none; border: 0; padding: 0; white-space: pre; font-size: 1em; }

.copy-wrap { position: relative; }

.copy-btn {
  position: absolute;
  top: .55rem;
  right: .6rem;
  background: var(--bg);
  border: 1px solid var(--sand-deep);
  border-radius: 6px;
  font-family: var(--mono);
  font-size: .68rem;
  color: var(--ink-soft);
  padding: .22rem .6rem;
  cursor: pointer;
  opacity: 0;
  transition: opacity .15s, color .15s, border-color .15s;
}
.copy-wrap:hover .copy-btn, .copy-btn:focus-visible { opacity: 1; }
.copy-btn:hover { border-color: var(--coral); color: var(--coral-deep); }
.copy-btn.done { color: var(--green); border-color: var(--green); opacity: 1; }

.term .copy-btn { background: var(--term); border-color: var(--term-edge); color: var(--term-dim); }
.term .copy-btn:hover { color: var(--term-text); }

/* ---------- cards & grids ---------- */

.grid { display: grid; gap: .9rem; margin: 1.4rem 0; grid-template-columns: repeat(auto-fit, minmax(230px, 1fr)); }

.card {
  background: var(--bg-raised);
  border: 1px solid var(--sand);
  border-radius: var(--radius);
  padding: 1.05rem 1.15rem;
  box-shadow: var(--shadow);
  transition: transform .18s ease, box-shadow .18s ease, border-color .18s;
}

a.card { text-decoration: none; color: inherit; display: block; }

.card:hover { transform: translateY(-2px); border-color: var(--sand-deep); }
a.card:hover { border-color: var(--coral); }

.card h3 { margin: .15rem 0 .3rem; font-size: 1rem; }
.card p { margin: 0; font-size: .87rem; color: var(--ink-soft); }

.card .num {
  font-family: var(--mono);
  font-size: .72rem;
  color: var(--coral);
  font-weight: 600;
}

/* expandable detail cards */
details.card { padding: 0; }
details.card summary {
  cursor: pointer;
  list-style: none;
  padding: .95rem 1.15rem;
  display: flex;
  align-items: center;
  gap: .6rem;
  font-weight: 600;
  font-size: .95rem;
}
details.card summary::-webkit-details-marker { display: none; }
details.card summary::after {
  content: '+';
  margin-left: auto;
  font-family: var(--mono);
  color: var(--coral);
  font-size: 1.05rem;
  transition: transform .2s;
}
details.card[open] summary::after { transform: rotate(45deg); }
details.card .d-body { padding: 0 1.15rem 1.05rem; font-size: .9rem; color: var(--ink-soft); }
details.card .d-body p { margin: .4rem 0; }

/* callout */
.callout {
  display: flex;
  gap: .7rem;
  background: var(--coral-wash);
  border: 1px solid #EDD3C6;
  border-radius: var(--radius);
  padding: .85rem 1.05rem;
  font-size: .92rem;
  margin: 1.4rem 0;
}
.callout .spark { color: var(--coral); flex-shrink: 0; }
.callout p { margin: 0; }

/* ---------- tables ---------- */

.tbl-wrap { overflow-x: auto; margin: 1.2rem 0; border: 1px solid var(--sand); border-radius: var(--radius); background: var(--bg-raised); }

table { border-collapse: collapse; width: 100%; font-size: .88rem; }

th {
  text-align: left;
  font-family: var(--mono);
  font-size: .68rem;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--muted);
  font-weight: 600;
  padding: .6rem .95rem;
  border-bottom: 1px solid var(--sand);
}

td { padding: .55rem .95rem; border-bottom: 1px solid #F0EADF; vertical-align: top; }
tr:last-child td { border-bottom: 0; }
td code { white-space: nowrap; }

/* filter chips + input (ch. 4) */
.filter-row { display: flex; flex-wrap: wrap; gap: .5rem; align-items: center; margin: 1.2rem 0 .4rem; }

.filter-input {
  flex: 1 1 200px;
  font-family: var(--sans);
  font-size: .9rem;
  padding: .5rem .85rem;
  border: 1px solid var(--sand-deep);
  border-radius: 9px;
  background: var(--bg-raised);
  color: var(--ink);
}
.filter-input:focus { outline: 2px solid var(--coral); outline-offset: 1px; border-color: transparent; }

.chip {
  font-family: var(--mono);
  font-size: .72rem;
  padding: .3rem .7rem;
  border-radius: 99px;
  border: 1px solid var(--sand-deep);
  background: var(--bg-raised);
  color: var(--ink-soft);
  cursor: pointer;
  transition: all .15s;
}
.chip:hover { border-color: var(--coral); }
.chip.on { background: var(--coral); border-color: var(--coral); color: #fff; }

/* ---------- permission prompt simulator ---------- */

.perm {
  border: 1px solid var(--term-edge);
  border-radius: 8px;
  margin: .9rem .3rem .3rem;
  padding: .7rem .85rem;
  background: rgba(217, 119, 87, .07);
}
.perm-q { color: var(--term-text); margin-bottom: .5rem; }
.perm-opt {
  display: block;
  width: 100%;
  text-align: left;
  background: none;
  border: 0;
  color: var(--term-dim);
  font-family: var(--mono);
  font-size: .82rem;
  padding: .16rem .4rem;
  border-radius: 5px;
  cursor: pointer;
}
.perm-opt:hover, .perm-opt.sel { color: var(--coral); background: rgba(217, 119, 87, .12); }
.perm-result { margin-top: .55rem; min-height: 1.4em; }

/* ---------- hero (index) ---------- */

.hero { padding-top: 1.5rem; }

.hero h1 { font-size: clamp(2.4rem, 5.5vw, 3.4rem); }
.hero h1 .hl { color: var(--coral); }

.hero .lede { max-width: 34rem; }

.btn-row { display: flex; gap: .8rem; flex-wrap: wrap; margin: 1.5rem 0 .5rem; }

.btn {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  font-family: var(--display);
  font-weight: 500;
  font-size: .95rem;
  padding: .62rem 1.25rem;
  border-radius: 10px;
  text-decoration: none;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform .15s, box-shadow .15s, background .15s;
}

.btn-primary { background: var(--coral); color: #fff; box-shadow: var(--shadow); }
.btn-primary:hover { background: var(--coral-deep); transform: translateY(-1px); }

.btn-ghost { border-color: var(--sand-deep); color: var(--ink-soft); background: var(--bg-raised); }
.btn-ghost:hover { border-color: var(--coral); color: var(--coral-deep); }

/* ---------- prev / next footer ---------- */

.pager {
  display: flex;
  gap: .9rem;
  margin-top: 3.5rem;
  padding-top: 1.6rem;
  border-top: 1px solid var(--sand);
}

.pager a {
  flex: 1;
  text-decoration: none;
  border: 1px solid var(--sand);
  border-radius: var(--radius);
  padding: .8rem 1rem;
  background: var(--bg-raised);
  transition: border-color .15s, transform .15s;
}
.pager a:hover { border-color: var(--coral); transform: translateY(-1px); }
.pager a.next { text-align: right; }
.pager .p-label { font-family: var(--mono); font-size: .66rem; letter-spacing: .1em; text-transform: uppercase; color: var(--muted); display: block; }
.pager .p-title { color: var(--ink); font-weight: 600; font-size: .93rem; }

/* ---------- command palette ---------- */

.palette-overlay {
  position: fixed;
  inset: 0;
  background: rgba(33, 30, 27, .42);
  backdrop-filter: blur(2px);
  z-index: 90;
  display: none;
  align-items: flex-start;
  justify-content: center;
  padding: 12vh 1rem 0;
}
.palette-overlay.open { display: flex; }

.palette {
  width: 100%;
  max-width: 34rem;
  background: var(--bg-raised);
  border: 1px solid var(--sand);
  border-radius: 14px;
  box-shadow: 0 24px 70px -20px rgba(33, 30, 27, .5);
  overflow: hidden;
  animation: pal-in .16s ease-out;
}

@keyframes pal-in { from { transform: translateY(-8px); } }

.palette input {
  width: 100%;
  border: 0;
  border-bottom: 1px solid var(--sand);
  background: transparent;
  font-family: var(--sans);
  font-size: 1rem;
  padding: .95rem 1.15rem;
  color: var(--ink);
}
.palette input:focus { outline: none; }

.palette-list { max-height: 46vh; overflow-y: auto; padding: .4rem; }

.pal-item {
  display: flex;
  align-items: baseline;
  gap: .7rem;
  padding: .55rem .8rem;
  border-radius: 8px;
  cursor: pointer;
  font-size: .9rem;
}
.pal-item.sel { background: var(--coral-wash); }
.pal-item .p-cmd { font-family: var(--mono); font-size: .84rem; font-weight: 600; color: var(--coral-deep); white-space: nowrap; }
.pal-item .p-desc { color: var(--ink-soft); font-size: .84rem; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.pal-item .p-where { margin-left: auto; font-family: var(--mono); font-size: .64rem; color: var(--muted); text-transform: uppercase; letter-spacing: .08em; flex-shrink: 0; }

.pal-empty { padding: 1.2rem; text-align: center; color: var(--muted); font-size: .9rem; }

.pal-hint {
  display: flex;
  gap: 1rem;
  padding: .5rem 1rem;
  border-top: 1px solid var(--sand);
  font-size: .7rem;
  color: var(--muted);
}

/* ---------- scroll reveal ---------- */

.reveal { opacity: 0; transform: translateY(14px); transition: opacity .5s ease, transform .5s ease; }
.reveal.in { opacity: 1; transform: none; }

/* ---------- on-this-page TOC ---------- */

.toc {
  display: none;
  position: sticky;
  top: 3.25rem;
  align-self: flex-start;
  width: 12.5rem;
  flex-shrink: 0;
  padding-top: 3.25rem;
  font-size: .8rem;
}
.toc .nav-label { padding-left: 0; }
.toc a { display: block; color: var(--muted); text-decoration: none; padding: .22rem 0 .22rem .7rem; border-left: 2px solid var(--sand); }
.toc a:hover { color: var(--ink); }
.toc a.here { color: var(--coral-deep); border-left-color: var(--coral); font-weight: 600; }

/* ---------- responsive ---------- */

@media (min-width: 1280px) { .toc { display: block; } }

@media (max-width: 900px) {
  .main { margin-left: 0; padding: 0 1.25rem; }
  .content { padding-top: 4.6rem; }

  .topbar {
    display: flex;
    align-items: center;
    gap: .75rem;
    position: fixed;
    top: 0; left: 0; right: 0;
    height: 3.3rem;
    background: rgba(250, 246, 239, .92);
    backdrop-filter: blur(8px);
    border-bottom: 1px solid var(--sand);
    padding: 0 1rem;
    z-index: 30;
  }
  .topbar .spark { color: var(--coral); font-size: 1.2rem; }
  .topbar b { font-family: var(--display); font-size: .95rem; }
  .menu-btn, .topbar .search-mini {
    background: none; border: 1px solid var(--sand-deep); border-radius: 8px;
    padding: .3rem .6rem; font-size: .85rem; color: var(--ink-soft); cursor: pointer;
    font-family: var(--mono);
  }
  .menu-btn { margin-left: auto; }

  .sidebar { transform: translateX(-100%); transition: transform .22s ease; box-shadow: none; }
  .sidebar.open { transform: none; box-shadow: 0 0 60px rgba(33, 30, 27, .3); }
  .scrim.show { display: block; }

  .hero h1 { font-size: 2.2rem; }
  .term { font-size: .78rem; margin-left: -.3rem; margin-right: -.3rem; }
}

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

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
  .cursor { animation: none; }
  .card, .btn, .pager a { transition: none; }
  .palette { animation: none; }
}

/* print: hide chrome */
@media print {
  .sidebar, .topbar, .toc, .pager, .copy-btn, .term-replay { display: none; }
  .main { margin: 0; }
}