/* =====================================================================
   SPK Decision Console — stylesheet
   Palette: indigo ink base, warm paper surface, 4 method accents
   Type: Space Grotesk (display) / Inter (body) / JetBrains Mono (data)
   ===================================================================== */
:root {
  --ink: #14132b;
  --ink-soft: #2a2848;
  --paper: #f3efe4;
  --paper-2: #fbf9f3;
  --line: #d8d2c2;
  --muted: #6b6880;
  --text: #1d1b33;

  --saw: #e09a2d;
  --topsis: #1fa897;
  --ahp: #e5604d;
  --game: #7b61ff;

  --accent: var(--saw);
  --shadow: 0 1px 0 rgba(20,19,43,.04), 0 12px 30px -18px rgba(20,19,43,.35);
  --radius: 14px;
  --mono: "JetBrains Mono", ui-monospace, monospace;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: "Inter", system-ui, sans-serif;
  color: var(--text);
  background:
    radial-gradient(900px 500px at 100% -10%, rgba(123,97,255,.06), transparent 60%),
    radial-gradient(700px 400px at -10% 0%, rgba(31,168,151,.06), transparent 55%),
    var(--paper);
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

.wrap { max-width: 1120px; margin: 0 auto; padding: 0 22px; }

/* ---------- Header ---------- */
.masthead { padding: 40px 0 14px; }
.eyebrow {
  font-family: var(--mono);
  font-size: 12px; letter-spacing: .18em; text-transform: uppercase;
  color: var(--muted); margin: 0 0 14px;
  display: flex; align-items: center; gap: 10px;
}
.eyebrow::before {
  content: ""; width: 26px; height: 2px; background: var(--ink); display: inline-block;
}
.masthead h1 {
  font-family: "Space Grotesk", sans-serif;
  font-weight: 600; font-size: clamp(30px, 5vw, 52px);
  line-height: 1.02; letter-spacing: -.02em; margin: 0 0 12px; color: var(--ink);
}
.masthead h1 em { font-style: normal; color: var(--accent); transition: color .4s; }
.lede { max-width: 620px; color: var(--muted); font-size: 16px; margin: 0; }

/* ---------- Method switchboard ---------- */
.switchboard {
  display: grid; grid-template-columns: repeat(5, 1fr);
  gap: 12px; margin: 30px 0 8px;
}
.method-card {
  position: relative; text-align: left; cursor: pointer;
  background: var(--paper-2); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 16px 16px 18px;
  font: inherit; color: var(--text);
  transition: transform .18s ease, box-shadow .18s ease, border-color .18s ease;
}
.method-card:hover { transform: translateY(-3px); box-shadow: var(--shadow); }
.method-card:focus-visible { outline: 3px solid var(--ink); outline-offset: 2px; }
.method-card .tag {
  font-family: var(--mono); font-size: 11px; letter-spacing: .14em;
  text-transform: uppercase; color: #fff; padding: 3px 8px; border-radius: 999px;
  display: inline-block; margin-bottom: 12px;
}
.method-card h3 {
  font-family: "Space Grotesk", sans-serif; font-weight: 600;
  font-size: 17px; margin: 0 0 4px; letter-spacing: -.01em;
}
.method-card p { margin: 0; font-size: 13px; color: var(--muted); }
.method-card .api {
  font-family: var(--mono); font-size: 11px; color: var(--muted);
  margin-top: 12px; display: block; word-break: break-all;
}
.method-card[data-active="true"] {
  border-color: var(--c); box-shadow: 0 0 0 2px var(--c) inset, var(--shadow);
}
.method-card .corner {
  position: absolute; top: 14px; right: 14px;
  font-family: var(--mono); font-size: 11px; color: var(--muted);
}

.m-saw .tag, .m-saw.method-card[data-active="true"] .tag { background: var(--saw); }
.m-topsis .tag { background: var(--topsis); }
.m-ahp .tag { background: var(--ahp); }
.m-game .tag { background: var(--game); }
.m-saw { --c: var(--saw); } .m-topsis { --c: var(--topsis); }
.m-ahp { --c: var(--ahp); } .m-game { --c: var(--game); }

/* ---------- Work panel ---------- */
.panel {
  background: var(--paper-2); border: 1px solid var(--line);
  border-radius: 18px; margin: 22px 0 60px; overflow: hidden;
  box-shadow: var(--shadow);
}
.panel-head {
  display: flex; align-items: center; justify-content: space-between;
  gap: 16px; padding: 20px 24px; border-bottom: 1px solid var(--line);
  background: linear-gradient(var(--paper-2), var(--paper));
}
.panel-head .title { display: flex; align-items: baseline; gap: 12px; flex-wrap: wrap; }
.panel-head h2 {
  font-family: "Space Grotesk", sans-serif; font-weight: 600;
  font-size: 22px; margin: 0; color: var(--ink); letter-spacing: -.01em;
}
.panel-head .case { font-size: 13px; color: var(--muted); }
.accent-bar { height: 4px; background: var(--accent); transition: background .4s; }

.panel-body { padding: 24px; }
.cols { display: grid; grid-template-columns: 300px minmax(0, 1fr); gap: 28px; align-items: start; }
.controls, .results { min-width: 0; }

/* ---------- Controls ---------- */
.controls h4, .results h4 {
  font-family: var(--mono); font-size: 12px; letter-spacing: .14em;
  text-transform: uppercase; color: var(--muted); margin: 0 0 14px;
}
.weight-row { margin-bottom: 16px; }
.weight-row .lbl {
  display: flex; justify-content: space-between; font-size: 13px; margin-bottom: 6px;
}
.weight-row .lbl .type {
  font-family: var(--mono); font-size: 10px; padding: 1px 6px; border-radius: 4px;
  text-transform: uppercase; letter-spacing: .08em;
}
.type.benefit { background: rgba(31,168,151,.16); color: #0e7468; }
.type.cost { background: rgba(229,96,77,.16); color: #b23a2a; }
.weight-row .lbl b { font-family: var(--mono); color: var(--accent); }
input[type=range] {
  width: 100%; accent-color: var(--accent); cursor: pointer;
}
.run-btn {
  width: 100%; margin-top: 8px; padding: 13px 18px; border: none; cursor: pointer;
  background: var(--ink); color: #fff; border-radius: 10px;
  font: 600 14px "Space Grotesk", sans-serif; letter-spacing: .01em;
  transition: transform .12s ease, background .2s;
}
.run-btn:hover { transform: translateY(-1px); background: var(--ink-soft); }
.run-btn:disabled { opacity: .55; cursor: progress; }

.note { font-size: 12px; color: var(--muted); margin-top: 14px; line-height: 1.5; }
.matrix-hint { font-family: var(--mono); font-size: 11px; color: var(--muted); }

/* ---------- Results ---------- */
.results { min-height: 220px; }
.placeholder {
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  height: 260px; text-align: center; color: var(--muted);
  border: 1px dashed var(--line); border-radius: 12px;
}
.placeholder .big { font-family: "Space Grotesk", sans-serif; font-size: 40px; opacity: .25; margin-bottom: 8px; }

.src-badge {
  font-family: var(--mono); font-size: 11px; padding: 3px 9px; border-radius: 999px;
  border: 1px solid var(--line); color: var(--muted); white-space: nowrap;
}
.src-badge.live { color: #0e7468; border-color: rgba(31,168,151,.5); background: rgba(31,168,151,.08); }
.src-badge.fallback, .src-badge.cache { color: #b23a2a; border-color: rgba(229,96,77,.4); background: rgba(229,96,77,.07); }

/* Winner banner */
.winner {
  display: flex; align-items: center; gap: 14px; padding: 16px 18px;
  border-radius: 12px; margin-bottom: 18px;
  background: color-mix(in srgb, var(--accent) 12%, var(--paper-2));
  border: 1px solid color-mix(in srgb, var(--accent) 40%, var(--line));
}
.winner .medal {
  width: 42px; height: 42px; flex: none; border-radius: 50%;
  display: grid; place-items: center; background: var(--accent); color: #fff;
  font: 700 18px "Space Grotesk", sans-serif;
}
.winner .w-text small {
  font-family: var(--mono); font-size: 11px; letter-spacing: .12em;
  text-transform: uppercase; color: var(--muted);
}
.winner .w-text div { font-family: "Space Grotesk", sans-serif; font-weight: 600; font-size: 18px; color: var(--ink); }

/* Ranking list */
.rank-list { list-style: none; margin: 0; padding: 0; }
.rank-item {
  display: grid; grid-template-columns: 28px 1fr auto; align-items: center;
  gap: 12px; padding: 11px 4px; border-bottom: 1px solid var(--line);
}
.rank-item:last-child { border-bottom: none; }
.rank-item .num {
  font-family: var(--mono); font-size: 13px; color: var(--muted); text-align: center;
}
.rank-item.top .num { color: var(--accent); font-weight: 700; }
.rank-item .nm { font-weight: 500; font-size: 14px; }
.rank-item .bar-wrap { grid-column: 2 / 3; height: 7px; border-radius: 4px; background: var(--line); margin-top: 5px; overflow: hidden; }
.rank-item .bar { height: 100%; width: 0; background: var(--accent); border-radius: 4px; transition: width .9s cubic-bezier(.2,.7,.2,1); }
.rank-item .sc { font-family: var(--mono); font-size: 13px; font-weight: 600; color: var(--ink); }

/* Data + matrix tables */
.tbl-scroll {
  overflow-x: auto; margin-top: 18px;
  -webkit-overflow-scrolling: touch;
  border: 1px solid var(--line); border-radius: 10px;
  background:
    linear-gradient(to right, var(--paper-2) 30%, rgba(251,249,243,0)) left / 28px 100% no-repeat,
    linear-gradient(to left, var(--paper-2) 30%, rgba(251,249,243,0)) right / 28px 100% no-repeat,
    linear-gradient(to right, rgba(20,19,43,.10), rgba(20,19,43,0)) left / 14px 100% no-repeat,
    linear-gradient(to left, rgba(20,19,43,.10), rgba(20,19,43,0)) right / 14px 100% no-repeat;
  background-attachment: local, local, scroll, scroll;
}
table.data { border-collapse: collapse; width: 100%; min-width: 540px; font-size: 13px; }
table.data th, table.data td {
  border: 1px solid var(--line); padding: 8px 10px; text-align: right;
  font-family: var(--mono); white-space: nowrap;
}
table.data th { background: var(--paper); color: var(--muted); font-weight: 600; text-align: right; }
table.data td.lbl, table.data th.lbl { text-align: left; font-family: "Inter", sans-serif; }
table.data tr.win td { background: color-mix(in srgb, var(--accent) 14%, var(--paper-2)); font-weight: 600; }
table.data td.saddle { background: var(--game); color: #fff; font-weight: 700; }

.subhead {
  font-family: "Space Grotesk", sans-serif; font-weight: 600; font-size: 15px;
  margin: 26px 0 10px; color: var(--ink);
}
.chips { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 6px; }
.chip {
  font-family: var(--mono); font-size: 12px; padding: 5px 10px; border-radius: 8px;
  background: var(--paper); border: 1px solid var(--line); color: var(--text);
}
.chip b { color: var(--accent); }
.callout {
  border-left: 3px solid var(--accent); padding: 12px 16px; margin-top: 16px;
  background: var(--paper); border-radius: 0 10px 10px 0; font-size: 14px;
}
.cr-ok { color: #0e7468; font-weight: 600; }
.cr-bad { color: #b23a2a; font-weight: 600; }

.err {
  padding: 14px 16px; border-radius: 10px; font-size: 13px;
  background: rgba(229,96,77,.08); border: 1px solid rgba(229,96,77,.35); color: #b23a2a;
}

/* ---------- 5th card: custom API ---------- */
.m-custom { --c: var(--ink); border-style: dashed; }
.m-custom .tag { background: var(--ink); }
.m-custom.method-card[data-active="true"] { box-shadow: 0 0 0 2px var(--ink) inset, var(--shadow); }

/* ---------- Info / explanation accordion ---------- */
.info-strip {
  padding: 16px 24px; border-bottom: 1px solid var(--line);
  background: var(--paper);
}
.info-short { font-size: 14px; color: var(--text); margin: 0 0 12px; max-width: 70ch; }
.info-short b { color: var(--ink); }
.info-actions { display: flex; flex-wrap: wrap; gap: 8px; }
.info-btn {
  font: 600 12.5px "Inter", sans-serif; cursor: pointer;
  background: var(--paper-2); border: 1px solid var(--line); color: var(--ink);
  padding: 7px 13px; border-radius: 999px; display: inline-flex; align-items: center; gap: 7px;
  transition: border-color .15s, background .15s, transform .1s;
}
.info-btn:hover { border-color: var(--accent); transform: translateY(-1px); }
.info-btn[aria-expanded="true"] { background: color-mix(in srgb, var(--accent) 14%, var(--paper-2)); border-color: var(--accent); }
.info-btn .chev { transition: transform .2s; font-size: 11px; opacity: .7; }
.info-btn[aria-expanded="true"] .chev { transform: rotate(180deg); }
.info-panel {
  margin-top: 12px; padding: 16px 18px; border-radius: 12px;
  background: var(--paper-2); border: 1px solid var(--line);
  font-size: 14px; line-height: 1.65; color: var(--text);
}
.info-panel[hidden] { display: none; }
.info-panel h5 {
  font-family: "Space Grotesk", sans-serif; font-size: 14px; margin: 0 0 8px; color: var(--ink);
}
.info-panel p { margin: 0 0 10px; }
.info-panel p:last-child { margin-bottom: 0; }
.info-panel ol { margin: 0; padding-left: 20px; }
.info-panel li { margin-bottom: 6px; }
.info-panel code { font-family: var(--mono); font-size: 12.5px; background: var(--paper); padding: 1px 5px; border-radius: 4px; }

/* ---------- Custom API form ---------- */
.cform { max-width: 760px; }
.field { margin-bottom: 16px; }
.field label { display: block; font-size: 13px; font-weight: 600; margin-bottom: 6px; color: var(--ink); }
.field .hint { font-weight: 400; color: var(--muted); font-size: 12px; }
.field input[type=text], .field select {
  width: 100%; padding: 10px 12px; border: 1px solid var(--line); border-radius: 9px;
  font: 14px var(--mono); background: var(--paper-2); color: var(--text);
}
.field input[type=text]:focus, .field select:focus { outline: 2px solid var(--accent); outline-offset: 1px; border-color: var(--accent); }
.field-row { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.crit-rows { display: flex; flex-direction: column; gap: 10px; }
.crit-row {
  display: grid; grid-template-columns: 1fr 110px 90px 36px; gap: 8px; align-items: center;
}
.crit-row select, .crit-row input { font-family: var(--mono); }
.crit-del {
  border: 1px solid var(--line); background: var(--paper-2); border-radius: 8px;
  width: 36px; height: 38px; cursor: pointer; color: var(--ahp); font-size: 18px; line-height: 1;
}
.crit-del:hover { border-color: var(--ahp); }
.btn-ghost {
  margin-top: 10px; background: none; border: 1px dashed var(--line); color: var(--muted);
  padding: 9px 14px; border-radius: 9px; cursor: pointer; font: 600 13px "Inter", sans-serif;
}
.btn-ghost:hover { border-color: var(--ink); color: var(--ink); }
.preset-bar { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 18px; }
.preset {
  font: 600 12px var(--mono); cursor: pointer; padding: 6px 11px; border-radius: 8px;
  border: 1px solid var(--line); background: var(--paper-2); color: var(--ink);
}
.preset:hover { border-color: var(--accent); }
.cform-meta { font-size: 12px; color: var(--muted); margin-top: 10px; }


/* spinner */
.spin {
  width: 30px; height: 30px; border: 3px solid var(--line);
  border-top-color: var(--accent); border-radius: 50%;
  animation: rot .8s linear infinite; margin: 90px auto;
}
@keyframes rot { to { transform: rotate(360deg); } }

footer {
  border-top: 1px solid var(--line); padding: 26px 0 50px; color: var(--muted);
  font-size: 13px; display: flex; justify-content: space-between; flex-wrap: wrap; gap: 8px;
}
footer code { font-family: var(--mono); font-size: 12px; }

/* ---------- Responsive ---------- */
@media (max-width: 1024px) {
  .switchboard { grid-template-columns: repeat(3, 1fr); }
}
@media (max-width: 860px) {
  .switchboard { grid-template-columns: repeat(2, 1fr); }
  .cols { grid-template-columns: 1fr; }
  .panel-head { flex-direction: column; align-items: flex-start; gap: 10px; }
  .info-strip, .panel-head, .panel-body { padding-left: 18px; padding-right: 18px; }
}
@media (max-width: 560px) {
  .field-row { grid-template-columns: 1fr; }
  .crit-row { grid-template-columns: 1fr 1fr; }
  .crit-row .crit-del { grid-column: 2; justify-self: end; }
}
@media (max-width: 420px) {
  .switchboard { grid-template-columns: 1fr; }
  .masthead { padding-top: 26px; }
  .wrap { padding: 0 16px; }
}
@media (prefers-reduced-motion: reduce) {
  * { animation-duration: .001ms !important; transition-duration: .001ms !important; }
}