/* ============================================================================
   psytester Guide — LIGHT / MINIMAL theme
   Easy-on-the-eyes: warm paper background, calm ink text, desaturated accents.
   Prose in a comfortable sans; headings + code + terminal stay monospace.
   (This re-themes the GUIDE only — the design-system cards & UI kit keep the
    authentic dark terminal palette from colors_and_type.css.)
   ========================================================================== */

:root {
  --g-bg:          #FAF8F3;   /* warm paper                       */
  --g-surface:     #FFFFFF;   /* cards                            */
  --g-surface-soft:#F4F2EB;   /* soft fill / dbox                 */
  --g-code-bg:     #F6F4ED;   /* terminal / code body             */
  --g-bar:         #ECE8DF;   /* window title bar                 */
  --g-border:      #E6E1D5;   /* hairline border                  */
  --g-border-soft: #EFEBE1;   /* very soft divider                */

  --g-ink:      #2C2A25;      /* primary text (warm near-black)   */
  --g-ink-soft: #565149;      /* secondary text                   */
  --g-muted:    #948D7E;      /* muted / hints                    */

  --g-green:    #1F7A3D;      /* signature accent (calm forest)   */
  --g-green-bg: rgba(31,122,61,0.09);
  --g-green-bd: rgba(31,122,61,0.22);
  --g-cyan:     #2C6E8A;      /* [DATA] / json keys               */
  --g-magenta:  #97487F;      /* template tokens                  */
  --g-amber:    #A8761F;      /* zebra even-row / highlight        */
  --g-red:      #B5402E;      /* errors                            */

  --font-sans: 'Noto Sans KR', -apple-system, BlinkMacSystemFont, 'Segoe UI',
               Roboto, 'Apple SD Gothic Neo', 'Malgun Gothic', sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
html, body { margin: 0; padding: 0; }
body {
  background: var(--g-bg);
  color: var(--g-ink);
  font-family: var(--font-sans);
  font-size: 18px;
  line-height: 1.72;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}
::selection { background: rgba(31,122,61,0.16); color: var(--g-ink); }

/* --- reading progress -------------------------------------------------- */
#progress {
  position: fixed; top: 0; left: 0; height: 2px; width: 0%;
  background: var(--g-green); z-index: 100; transition: width .1s linear;
}

/* --- top nav ----------------------------------------------------------- */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 90;
  display: flex; align-items: center; gap: 14px;
  padding: 13px 24px; background: rgba(250,248,243,0.82);
  backdrop-filter: blur(10px); border-bottom: 1px solid var(--g-border);
}
.nav .mk { width: 21px; height: 21px; opacity: .9; }
.nav .brand { color: var(--g-ink); font-weight: 700; font-size: 15.5px; font-family: var(--font-mono); }
.nav .brand .g { color: var(--g-green); }
.nav .links { margin-left: auto; display: flex; gap: 2px; flex-wrap: wrap; }
.nav .links a {
  color: var(--g-muted); text-decoration: none; font-size: 14px;
  font-family: var(--font-mono);
  padding: 5px 10px; border-radius: 6px; transition: color .15s, background .15s;
}
.nav .links a:hover { color: var(--g-ink); background: var(--g-surface-soft); }
@media (max-width: 720px){ .nav .links { display: none; } }

/* --- layout ------------------------------------------------------------ */
.wrap { position: relative; z-index: 1; max-width: 1120px; margin: 0 auto; padding: 0 24px; }
section { padding: 92px 0 24px; scroll-margin-top: 64px; }
section:first-of-type { padding-top: 0; }

/* --- section tag ------------------------------------------------------- */
.tag {
  display: inline-flex; align-items: center; gap: 9px;
  color: var(--g-muted); font-size: 12px; letter-spacing: .14em;
  text-transform: uppercase; margin-bottom: 18px; font-family: var(--font-mono);
}
.tag .no { color: var(--g-green); }
.tag::before { content: ""; width: 24px; height: 1px; background: var(--g-green); opacity: .6; }

/* --- type -------------------------------------------------------------- */
h1, h2, h3 { font-family: var(--font-mono); }
h1 { font-size: clamp(44px, 7.5vw, 80px); line-height: 1.04; margin: 0 0 18px;
     color: var(--g-ink); font-weight: 700; letter-spacing: -.02em; }
h2 { font-size: clamp(29px, 4.4vw, 42px); line-height: 1.16; margin: 0 0 18px;
     color: var(--g-ink); font-weight: 700; letter-spacing: -.01em; }
h3 { font-size: 20px; color: var(--g-ink); font-weight: 700; margin: 28px 0 10px; }
p  { margin: 0 0 16px; color: var(--g-ink-soft); }
.lead { font-size: clamp(19px, 2.3vw, 23px); color: var(--g-ink); line-height: 1.62; }
.muted { color: var(--g-muted); }
.en { color: var(--g-muted); font-size: .92em; }
code, .mono { font-family: var(--font-mono); }
code.k {
  color: var(--g-green); background: var(--g-green-bg);
  padding: 1px 6px; border-radius: 5px; font-size: .9em;
  border: 1px solid var(--g-green-bd);
}
code.tok { color: var(--g-magenta); background: rgba(151,72,127,0.08);
  padding: 1px 5px; border-radius: 5px; font-size: .9em; }
code.var { color: var(--g-cyan); background: rgba(44,110,138,0.08);
  padding: 1px 5px; border-radius: 5px; font-size: .9em; }
strong { color: var(--g-ink); font-weight: 700; }
.hl-y { color: var(--g-amber); }
.hl-g { color: var(--g-green); }
.hl-c { color: var(--g-cyan); }
.hl-r { color: var(--g-red); }

a.inline { color: var(--g-cyan); text-decoration: none; border-bottom: 1px solid rgba(44,110,138,.35); }
a.inline:hover { color: var(--g-ink); }

/* --- reveal on scroll -------------------------------------------------- */
.reveal { opacity: 0; transform: translateY(22px); transition: opacity .7s ease, transform .7s ease; }
.reveal.in { opacity: 1; transform: none; }
.reveal.d1 { transition-delay: .08s; }
.reveal.d2 { transition-delay: .16s; }
.reveal.d3 { transition-delay: .24s; }
.reveal.d4 { transition-delay: .32s; }
@media (prefers-reduced-motion: reduce){
  .reveal { opacity: 1; transform: none; transition: none; }
}

/* --- hero -------------------------------------------------------------- */
.hero { min-height: 90vh; display: flex; flex-direction: column; justify-content: center; padding-top: 80px; }
.hero .kicker { color: var(--g-green); font-size: 15px; letter-spacing: .12em; margin-bottom: 20px; font-family: var(--font-mono); }
.hero h1 .g { color: var(--g-green); }
.hero .by { color: var(--g-muted); font-size: 16px; margin-top: 8px; font-family: var(--font-mono); }
.hero .by a { color: var(--g-cyan); text-decoration: none; }
.hero .scrollcue { margin-top: 52px; color: var(--g-muted); font-size: 13px; display: flex; align-items: center; gap: 10px; }
.hero .scrollcue .arr { animation: bob 1.6s ease-in-out infinite; }
@keyframes bob { 0%,100%{ transform: translateY(0);} 50%{ transform: translateY(5px);} }

/* --- generic card ------------------------------------------------------ */
.card {
  background: var(--g-surface); border: 1px solid var(--g-border); border-radius: 10px;
  padding: 22px 24px; margin: 18px 0;
  box-shadow: 0 1px 2px rgba(44,42,37,0.03);
}
.grid2 { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.grid3 { display: grid; grid-template-columns: repeat(3,1fr); gap: 14px; }
@media (max-width: 720px){ .grid2,.grid3 { grid-template-columns: 1fr; } }

/* --- box + arrow diagrams --------------------------------------------- */
.dbox {
  background: var(--g-surface-soft); border: 1px solid var(--g-border); border-radius: 8px;
  padding: 12px 14px; position: relative; min-width: 0;
}
.dbox .t { color: var(--g-ink); font-weight: 700; font-size: 15px; display: block; font-family: var(--font-mono); }
.dbox .s { color: var(--g-muted); font-size: 13.5px; display: block; margin-top: 3px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.dbox.accent { border-color: var(--g-green-bd); background: var(--g-green-bg); }
.dbox.accent .t { color: var(--g-green); }

/* horizontal pipeline */
.pipe { display: flex; align-items: stretch; gap: 0; margin: 26px 0; overflow-x: auto; padding-bottom: 8px; }
.pipe .stage { flex: 1 1 0; min-width: 120px; }
.pipe .conn {
  flex: 0 0 38px; position: relative; align-self: center; height: 2px;
  background: var(--g-border); margin: 0 -1px; min-width: 30px;
}
.pipe .conn::after {
  content: ""; position: absolute; right: -1px; top: 50%; transform: translateY(-50%);
  border-left: 7px solid var(--g-border); border-top: 5px solid transparent; border-bottom: 5px solid transparent;
}
.pipe.flow .conn { background: linear-gradient(90deg, var(--g-border), rgba(31,122,61,.45)); }
.pipe.flow .conn::after { border-left-color: rgba(31,122,61,.55); }
.pipe.flow .conn .pkt {
  position: absolute; top: 50%; left: 0; width: 6px; height: 6px; border-radius: 50%;
  background: var(--g-green); transform: translateY(-50%);
  box-shadow: 0 0 7px rgba(31,122,61,.5);
  animation: travel 2.4s linear infinite;
}
@keyframes travel { 0%{ left: -6%; opacity: 0;} 12%{opacity:1;} 88%{opacity:1;} 100%{ left: 106%; opacity: 0;} }
@media (max-width: 720px){
  .pipe { flex-direction: column; gap: 0; }
  .pipe .conn { width: 2px; height: 30px; flex: 0 0 30px; align-self: center; background: var(--g-border); }
  .pipe .conn::after { right: 50%; top: auto; bottom: -1px; transform: translateX(50%);
    border-left: 5px solid transparent; border-right: 5px solid transparent; border-top: 7px solid var(--g-border); border-bottom: none; }
  .pipe.flow .conn .pkt { animation: travelv 2.4s linear infinite; left: 50%; }
  @keyframes travelv { 0%{ top:-6%; opacity:0;} 12%{opacity:1;} 88%{opacity:1;} 100%{ top:106%; opacity:0;} }
}

/* --- terminal / code window ------------------------------------------- */
.win { border: 1px solid var(--g-border); border-radius: 10px; overflow: hidden;
       box-shadow: 0 2px 10px rgba(44,42,37,0.05); margin: 18px 0; background: var(--g-code-bg);
       font-family: var(--font-mono); }
.win .bar { background: var(--g-bar); display: flex; align-items: center; gap: 8px; padding: 9px 13px;
            border-bottom: 1px solid var(--g-border); }
.win .dot { width: 10px; height: 10px; border-radius: 50%; }
.win .ttl { color: var(--g-muted); font-size: 13px; margin-left: 10px; }
.win .body { padding: 16px 18px; font-size: 15.5px; line-height: 1.65; overflow-x: auto; color: var(--g-ink); }
.win .body .l { white-space: pre; }
.win .prompt { color: var(--g-green); font-weight: 700; }
.win .prog { color: var(--g-ink); }
.win .cprog { color: var(--g-ink); } .win .csub { color: var(--g-ink); font-weight: 700; }
.win .cflag { color: var(--g-cyan); } .win .cmt { color: var(--g-muted); }
.win .tdata { color: var(--g-cyan); } .win .twarn { color: var(--g-amber); }
.win .terr { color: var(--g-red); } .win .num { color: var(--g-ink); font-weight: 700; }
.win .jk { color: var(--g-cyan); } .win .jn { color: var(--g-ink); font-weight: 700; }
.win .barfill { color: var(--g-green); }

/* --- scoreboard table -------------------------------------------------- */
table.sb { border-collapse: collapse; font-variant-numeric: tabular-nums; font-size: 15.5px; font-family: var(--font-mono); }
table.sb th, table.sb td { padding: 1px 16px 1px 0; text-align: right; white-space: pre; }
table.sb th.left, table.sb td.left { text-align: left; padding-right: 24px; }
table.sb thead th { vertical-align: bottom; }
table.sb thead .cnt { display: block; color: var(--g-muted); font-weight: 400; font-size: 12.5px; }
table.sb thead .hdr { display: block; color: var(--g-ink); font-weight: 700; }
table.sb tbody tr.odd td { color: var(--g-ink-soft); }
table.sb tbody tr.even td { color: var(--g-amber); }
table.sb tbody td.best { color: var(--g-green); font-weight: 700; }
table.sb td.col-anim { transition: background .5s; }

/* --- options reference table ------------------------------------------ */
table.ref { width: 100%; border-collapse: collapse; margin: 14px 0; font-size: 16px; }
table.ref th { text-align: left; color: var(--g-muted); font-weight: 500; font-size: 13px;
  text-transform: uppercase; letter-spacing: .06em; padding: 6px 14px 8px 0; border-bottom: 1px solid var(--g-border);
  font-family: var(--font-mono); }
table.ref td { padding: 10px 14px 10px 0; border-bottom: 1px solid var(--g-border-soft); vertical-align: top; color: var(--g-ink-soft); }
table.ref td:first-child { white-space: nowrap; }
table.ref code { color: var(--g-green); font-family: var(--font-mono); }
table.ref .dim { color: var(--g-muted); }

/* --- mode cards -------------------------------------------------------- */
.mode { background: var(--g-surface); border: 1px solid var(--g-border); border-radius: 10px; padding: 20px 22px; margin: 16px 0;
        box-shadow: 0 1px 2px rgba(44,42,37,0.03); }
.mode .head { display: flex; align-items: baseline; gap: 12px; margin-bottom: 6px; }
.mode .head .cmd { color: var(--g-green); font-weight: 700; font-size: 18px; font-family: var(--font-mono); }
.mode .head .alias { color: var(--g-muted); font-size: 13.5px; font-family: var(--font-mono); }
.mode .head .ko { color: var(--g-ink); font-size: 17px; margin-left: auto; font-weight: 500; }

/* --- callout ----------------------------------------------------------- */
.callout { border-left: 3px solid var(--g-amber); background: rgba(168,118,31,0.06);
  padding: 14px 18px; margin: 18px 0; border-radius: 0 8px 8px 0; color: var(--g-ink-soft); }
.callout.g { border-left-color: var(--g-green); background: var(--g-green-bg); }
.callout .h { color: var(--g-ink); font-weight: 700; font-size: 13px; display: block; margin-bottom: 4px; }

/* --- key-value steps --------------------------------------------------- */
.steps { counter-reset: st; margin: 16px 0; }
.steps .step { display: flex; gap: 14px; padding: 12px 0; border-bottom: 1px solid var(--g-border-soft); }
.steps .step:last-child { border-bottom: none; }
.steps .step .n { counter-increment: st; flex: 0 0 auto; width: 26px; height: 26px;
  border: 1px solid var(--g-green-bd); border-radius: 7px; color: var(--g-green); background: var(--g-green-bg);
  display: flex; align-items: center; justify-content: center; font-size: 13px; font-weight: 700; font-family: var(--font-mono); }
.steps .step .n::before { content: counter(st); }
.steps .step .c { flex: 1; color: var(--g-ink-soft); }
.steps .step .c b { color: var(--g-ink); }

/* --- footer ------------------------------------------------------------ */
footer { padding: 70px 0 90px; border-top: 1px solid var(--g-border); margin-top: 60px; color: var(--g-muted); font-size: 13.5px; }
footer a { color: var(--g-cyan); text-decoration: none; }
footer .big { color: var(--g-ink); font-weight: 700; font-size: 16px; margin-bottom: 10px; font-family: var(--font-mono); }