/* ============================================================================
   Crucible — styles
   ========================================================================== */

:root {
  --bg:        #0b0e14;
  --bg-2:      #11151f;
  --panel:     #161b27;
  --panel-2:   #1c2231;
  --line:      #28304180;
  --line-solid:#2a3242;
  --txt:       #e7ecf5;
  --txt-dim:   #9aa6bd;
  --txt-faint: #6b768d;
  --accent:    #7c8cff;
  --accent-2:  #67e8c3;
  --good:      #4ade80;
  --warn:      #fbbf24;
  --bad:       #fb7185;
  --code-bg:   #0c1019;
  --shadow:    0 10px 40px -12px rgba(0,0,0,.6);
  --radius:    14px;
  --maxw:      1180px;
  --fs:        15px;
  color-scheme: dark;
}

[data-theme="light"] {
  --bg:        #f4f6fb;
  --bg-2:      #eef1f8;
  --panel:     #ffffff;
  --panel-2:   #f6f8fc;
  --line:      #d9dfeb;
  --line-solid:#dde3ef;
  --txt:       #1a2030;
  --txt-dim:   #56627a;
  --txt-faint: #8b95a9;
  --accent:    #4f5fe0;
  --accent-2:  #0f9d80;
  --good:      #16a34a;
  --warn:      #b45309;
  --bad:       #e11d48;
  --code-bg:   #f0f3f9;
  --shadow:    0 10px 30px -14px rgba(20,30,60,.25);
  color-scheme: light;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  font-size: var(--fs);
  line-height: 1.55;
  color: var(--txt);
  background:
    radial-gradient(1100px 600px at 12% -10%, color-mix(in srgb, var(--accent) 12%, transparent), transparent 60%),
    radial-gradient(900px 500px at 100% 0%, color-mix(in srgb, var(--accent-2) 9%, transparent), transparent 55%),
    var(--bg);
  background-attachment: fixed;
  -webkit-font-smoothing: antialiased;
}

code, kbd, pre, .mono { font-family: ui-monospace, "SF Mono", "JetBrains Mono", Menlo, Consolas, monospace; }

h1 { font-size: clamp(1.5rem, 1.1rem + 1.6vw, 2.1rem); margin: 0 0 .25rem; letter-spacing: -.02em; }
h2 { font-size: 1.15rem; margin: 0 0 .5rem; letter-spacing: -.01em; }
h3 { font-size: .95rem; margin: 0 0 .5rem; }

.lede { color: var(--txt-dim); max-width: 62ch; margin: 0; }
.lede em, h1 em { color: var(--accent-2); font-style: normal; }

.skip-link {
  position: absolute; left: -999px; top: 0; z-index: 100;
  background: var(--accent); color: #fff; padding: .6rem 1rem; border-radius: 0 0 8px 0;
}
.skip-link:focus { left: 0; }

/* ---------- topbar ---------- */
.topbar {
  position: sticky; top: 0; z-index: 30;
  display: flex; align-items: center; gap: 1.25rem;
  padding: .7rem clamp(.9rem, 3vw, 1.6rem);
  background: color-mix(in srgb, var(--bg) 80%, transparent);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
}
.brand { display: flex; align-items: baseline; gap: .5rem; flex-shrink: 0; }
.brand-mark { font-size: 1.3rem; transform: translateY(2px); }
.brand-name { font-weight: 800; letter-spacing: -.02em; font-size: 1.15rem; }
.brand-tag { color: var(--txt-faint); font-size: .82rem; }
.brand-tag em { color: var(--accent-2); font-style: normal; }

.tabs { display: flex; gap: .15rem; margin-left: auto; flex-wrap: wrap; }
.tab {
  appearance: none; border: 0; background: transparent; color: var(--txt-dim);
  font: inherit; font-weight: 600; font-size: .88rem; cursor: pointer;
  padding: .45rem .7rem; border-radius: 9px; transition: background .15s, color .15s;
}
.tab:hover { color: var(--txt); background: var(--panel); }
.tab[aria-current="page"] { color: var(--txt); background: var(--panel-2); box-shadow: inset 0 0 0 1px var(--line-solid); }
.tab:focus-visible, .theme-toggle:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

.theme-toggle {
  appearance: none; border: 1px solid var(--line-solid); background: var(--panel);
  color: var(--txt); width: 38px; height: 38px; border-radius: 10px; cursor: pointer;
  font-size: 1.1rem; flex-shrink: 0; transition: background .15s;
}
.theme-toggle:hover { background: var(--panel-2); }

/* ---------- sample banner ---------- */
.sample-banner {
  display: flex; align-items: center; gap: 1rem;
  max-width: var(--maxw); margin: .9rem auto 0; padding: .6rem .9rem;
  background: color-mix(in srgb, var(--warn) 12%, var(--panel));
  border: 1px solid color-mix(in srgb, var(--warn) 35%, var(--line-solid));
  border-radius: 10px; font-size: .85rem; color: var(--txt);
  width: calc(100% - 2 * clamp(.9rem, 3vw, 1.6rem));
}
.sample-banner[hidden] { display: none; }
.banner-x { margin-left: auto; background: transparent; border: 0; color: var(--txt-dim); cursor: pointer; font-size: 1rem; }
.banner-x:hover { color: var(--txt); }
.linkish {
  background: transparent; border: 0; color: var(--accent); font: inherit; font-weight: 600;
  cursor: pointer; padding: 0; text-decoration: underline; text-underline-offset: 2px;
}

/* ---------- layout ---------- */
main {
  max-width: var(--maxw);
  margin: 0 auto; padding: 1.4rem clamp(.9rem, 3vw, 1.6rem) 2rem;
}
.view { animation: fade .25s ease; }
.view[hidden] { display: none; }
@keyframes fade { from { opacity: 0; transform: translateY(6px); } to { opacity: 1; transform: none; } }

.view-head {
  display: flex; justify-content: space-between; align-items: flex-end; gap: 1rem;
  margin-bottom: 1.3rem; flex-wrap: wrap;
}

/* ---------- arena ---------- */
.arena-progress { flex-shrink: 0; }
.progress-ring {
  --p: 0;
  width: 76px; height: 76px; border-radius: 50%;
  display: grid; place-content: center; text-align: center;
  background:
    radial-gradient(closest-side, var(--panel) 79%, transparent 80% 100%),
    conic-gradient(var(--accent) calc(var(--p) * 1%), var(--line-solid) 0);
  font-weight: 800; font-size: 1.3rem; line-height: 1;
}
.progress-ring small { display: block; font-size: .58rem; font-weight: 600; color: var(--txt-faint); letter-spacing: .08em; text-transform: uppercase; }

.arena-stage {
  display: grid; grid-template-columns: 1fr auto 1fr; gap: 1rem; align-items: stretch;
}
.arena-task {
  grid-column: 1 / -1;
  background: var(--panel); border: 1px solid var(--line-solid); border-radius: var(--radius);
  padding: .9rem 1.1rem; margin-bottom: .2rem;
}
.arena-task .meta { display: flex; gap: .5rem; align-items: center; margin-bottom: .35rem; flex-wrap: wrap; }
.arena-task h2 { margin: 0; font-size: 1rem; }
.arena-task p { margin: .35rem 0 0; color: var(--txt-dim); font-size: .9rem; white-space: pre-wrap; }

.combatant {
  background: var(--panel); border: 1px solid var(--line-solid); border-radius: var(--radius);
  display: flex; flex-direction: column; overflow: hidden;
  transition: transform .12s, box-shadow .12s, border-color .12s;
}
.combatant:focus-within { border-color: var(--accent); }
.combatant-head {
  display: flex; align-items: center; justify-content: space-between;
  padding: .6rem .85rem; border-bottom: 1px solid var(--line); font-size: .8rem; color: var(--txt-faint);
  letter-spacing: .03em;
}
.combatant-tag { font-weight: 700; color: var(--txt-dim); }
.combatant pre {
  margin: 0; padding: .85rem 1rem; overflow-x: auto; flex: 1;
  background: var(--code-bg); font-size: .8rem; line-height: 1.5; white-space: pre;
  max-height: 360px;
}
.vote-btn {
  appearance: none; border: 0; border-top: 1px solid var(--line);
  background: var(--panel-2); color: var(--txt); font: inherit; font-weight: 700;
  padding: .7rem; cursor: pointer; transition: background .15s; font-size: .9rem;
}
.vote-btn:hover { background: color-mix(in srgb, var(--accent) 22%, var(--panel-2)); }
.vote-btn .kbd-hint { color: var(--txt-faint); font-weight: 600; font-size: .75rem; margin-left: .4rem; }
.vote-btn:focus-visible { outline: 2px solid var(--accent); outline-offset: -3px; }

.arena-mid {
  display: flex; flex-direction: column; align-items: center; justify-content: center; gap: .55rem;
}
.vs-badge {
  width: 44px; height: 44px; border-radius: 50%; display: grid; place-content: center;
  background: var(--panel); border: 1px solid var(--line-solid); font-weight: 800; color: var(--txt-dim);
  font-size: .85rem;
}
.mid-btn {
  appearance: none; border: 1px solid var(--line-solid); background: var(--panel); color: var(--txt-dim);
  font: inherit; font-weight: 600; font-size: .78rem; padding: .4rem .7rem; border-radius: 8px; cursor: pointer;
  white-space: nowrap;
}
.mid-btn:hover { background: var(--panel-2); color: var(--txt); }
.mid-btn:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

.arena-help { text-align: center; color: var(--txt-faint); font-size: .82rem; margin: 1rem 0 0; }
kbd {
  background: var(--panel-2); border: 1px solid var(--line-solid); border-bottom-width: 2px;
  border-radius: 6px; padding: .05rem .4rem; font-size: .78rem; color: var(--txt-dim);
}

/* reveal */
.reveal-panel {
  margin-top: 1.4rem; background: var(--panel); border: 1px solid var(--line-solid);
  border-radius: var(--radius); padding: 1.2rem; box-shadow: var(--shadow);
  animation: fade .3s ease;
}
.reveal-panel h2 { font-size: 1.2rem; }
.reveal-rows { display: flex; flex-direction: column; gap: .5rem; margin: 1rem 0; }
.reveal-row {
  display: grid; grid-template-columns: 1.4rem 1fr auto auto; align-items: center; gap: .7rem;
  padding: .55rem .7rem; background: var(--panel-2); border-radius: 10px; border: 1px solid var(--line);
}
.reveal-rank { font-weight: 800; color: var(--txt-faint); text-align: center; }
.reveal-name { font-weight: 700; display: flex; align-items: center; gap: .5rem; }
.reveal-elo { font-variant-numeric: tabular-nums; color: var(--txt-dim); font-size: .85rem; }
.diverge-note {
  font-size: .9rem; color: var(--txt-dim); background: color-mix(in srgb, var(--accent) 9%, var(--panel-2));
  border-left: 3px solid var(--accent); padding: .7rem .9rem; border-radius: 0 8px 8px 0; margin-top: .4rem;
}
.diverge-note strong { color: var(--txt); }
.dot { width: 10px; height: 10px; border-radius: 50%; display: inline-block; flex-shrink: 0; }

/* ---------- leaderboard ---------- */
.board-layout { display: grid; grid-template-columns: 290px 1fr; gap: 1.4rem; align-items: start; }
.weights {
  background: var(--panel); border: 1px solid var(--line-solid); border-radius: var(--radius);
  padding: 1rem; position: sticky; top: 80px;
}
.weights-head { display: flex; justify-content: space-between; align-items: center; margin-bottom: .8rem; }
.ghost-btn {
  appearance: none; background: transparent; border: 1px solid var(--line-solid); color: var(--txt-dim);
  font: inherit; font-size: .8rem; font-weight: 600; padding: .35rem .6rem; border-radius: 8px; cursor: pointer;
}
.ghost-btn:hover { background: var(--panel-2); color: var(--txt); }
.ghost-btn:focus-visible, .chip:focus-visible, .primary-btn:focus-visible, .linkish:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
.ghost-btn.danger { color: var(--bad); border-color: color-mix(in srgb, var(--bad) 40%, var(--line-solid)); }

.weight {
  margin-bottom: .75rem;
}
.weight-top { display: flex; justify-content: space-between; align-items: baseline; margin-bottom: .15rem; }
.weight-label { font-weight: 600; font-size: .88rem; }
.weight-val { font-variant-numeric: tabular-nums; color: var(--accent); font-weight: 700; font-size: .85rem; }
.weight input[type="range"] { width: 100%; accent-color: var(--accent); cursor: pointer; height: 1.4rem; }
.weight .hint { font-size: .72rem; color: var(--txt-faint); }

.preset-row { margin-top: 1rem; display: flex; flex-wrap: wrap; gap: .4rem; align-items: center; }
.preset-label { font-size: .78rem; color: var(--txt-faint); width: 100%; }
.chip {
  appearance: none; background: var(--panel-2); border: 1px solid var(--line-solid); color: var(--txt-dim);
  font: inherit; font-size: .8rem; font-weight: 600; padding: .3rem .6rem; border-radius: 999px; cursor: pointer;
}
.chip:hover { color: var(--txt); border-color: var(--accent); }

.board { list-style: none; margin: 0 0 1.4rem; padding: 0; display: flex; flex-direction: column; gap: .5rem; }
.board-row {
  display: grid; grid-template-columns: 2rem 1fr 5.5rem; align-items: center; gap: .8rem;
  background: var(--panel); border: 1px solid var(--line-solid); border-radius: 12px; padding: .7rem .9rem;
  transition: transform .35s cubic-bezier(.2,.8,.2,1);
}
.board-rank { font-weight: 800; font-size: 1.1rem; color: var(--txt-faint); text-align: center; }
.board-row.lead .board-rank { color: var(--accent-2); }
.board-id { display: flex; align-items: center; gap: .55rem; min-width: 0; }
.board-id .nm { font-weight: 700; }
.board-id .vd { color: var(--txt-faint); font-size: .78rem; }
.board-bar-wrap { display: flex; flex-direction: column; gap: .3rem; min-width: 0; }
.board-bar { height: 7px; border-radius: 99px; background: var(--line-solid); overflow: hidden; }
.board-bar > i { display: block; height: 100%; border-radius: 99px; transition: width .4s cubic-bezier(.2,.8,.2,1); }
.board-sub { font-size: .74rem; color: var(--txt-faint); display: flex; gap: .8rem; flex-wrap: wrap; }
.board-score { font-weight: 800; font-size: 1.25rem; text-align: right; font-variant-numeric: tabular-nums; }

.board-aux { }
.radar-card {
  background: var(--panel); border: 1px solid var(--line-solid); border-radius: var(--radius); padding: 1rem;
}
.radar-host { display: grid; place-content: center; }
.radar-cap { color: var(--txt-dim); font-size: .82rem; text-align: center; margin: .4rem 0 0; }

/* ---------- tasks ---------- */
.filter-row { display: flex; gap: .4rem; flex-wrap: wrap; }
.task-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(270px, 1fr)); gap: 1rem; }
.task-card {
  text-align: left; appearance: none; cursor: pointer;
  background: var(--panel); border: 1px solid var(--line-solid); border-radius: var(--radius);
  padding: 1rem; color: inherit; font: inherit; display: flex; flex-direction: column; gap: .55rem;
  transition: transform .12s, border-color .12s, box-shadow .12s;
}
.task-card:hover { transform: translateY(-3px); border-color: var(--accent); box-shadow: var(--shadow); }
.task-card:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
.task-card h3 { margin: 0; font-size: 1.02rem; }
.task-card .prompt { color: var(--txt-dim); font-size: .85rem; flex: 1; }
.tags { display: flex; gap: .4rem; flex-wrap: wrap; }
.pill {
  font-size: .72rem; font-weight: 600; padding: .15rem .5rem; border-radius: 999px;
  background: var(--panel-2); color: var(--txt-dim); border: 1px solid var(--line);
}
.pill.cat { color: var(--accent); border-color: color-mix(in srgb, var(--accent) 40%, var(--line)); }
.pill.diff-Easy { color: var(--good); }
.pill.diff-Medium { color: var(--warn); }
.pill.diff-Hard { color: var(--bad); }
.pill.imported { color: var(--accent-2); border-color: color-mix(in srgb, var(--accent-2) 40%, var(--line)); }
.task-card .winner { font-size: .78rem; color: var(--txt-faint); }
.task-card .winner b { color: var(--txt); }

/* ---------- models ---------- */
.model-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 1rem; }
.model-card {
  background: var(--panel); border: 1px solid var(--line-solid); border-radius: var(--radius);
  padding: 1.1rem; position: relative; overflow: hidden;
}
.model-card::before { content: ""; position: absolute; inset: 0 auto 0 0; width: 4px; background: var(--mc, var(--accent)); }
.model-card h3 { font-size: 1.15rem; margin-bottom: .1rem; display: flex; align-items: center; gap: .5rem; }
.model-card .vendor { color: var(--txt-faint); font-size: .8rem; margin-bottom: .5rem; }
.model-card .blurb { color: var(--txt-dim); font-size: .87rem; min-height: 2.6em; }
.model-stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: .5rem; margin-top: .8rem; }
.stat { background: var(--panel-2); border-radius: 9px; padding: .45rem .55rem; text-align: center; }
.stat .v { font-weight: 800; font-size: .95rem; font-variant-numeric: tabular-nums; }
.stat .l { font-size: .66rem; color: var(--txt-faint); text-transform: uppercase; letter-spacing: .05em; }

/* ---------- import ---------- */
.import-grid { display: grid; grid-template-columns: 1.4fr 1fr; gap: 1.4rem; align-items: start; }
.import-form, .import-side {
  background: var(--panel); border: 1px solid var(--line-solid); border-radius: var(--radius); padding: 1.1rem;
}
.field { display: flex; flex-direction: column; gap: .3rem; margin-bottom: 1rem; }
.field > span { font-weight: 600; font-size: .86rem; }
input[type="text"], textarea {
  background: var(--bg-2); border: 1px solid var(--line-solid); border-radius: 9px;
  color: var(--txt); font: inherit; padding: .55rem .7rem; width: 100%; resize: vertical;
}
input:focus, textarea:focus { outline: 2px solid var(--accent); outline-offset: 0; border-color: transparent; }
.imp-output { display: grid; grid-template-columns: 1fr; gap: .35rem; margin-bottom: .7rem; padding: .6rem; background: var(--panel-2); border-radius: 10px; border: 1px solid var(--line); }
.imp-output .row { display: flex; gap: .5rem; align-items: center; }
.imp-output input[type="text"] { flex: 1; }
.imp-output textarea { font-family: ui-monospace, monospace; font-size: .8rem; }
.imp-remove { background: transparent; border: 0; color: var(--bad); cursor: pointer; font-size: 1.1rem; padding: 0 .3rem; }
.form-actions { display: flex; align-items: center; gap: .8rem; flex-wrap: wrap; }
.primary-btn {
  appearance: none; border: 0; background: var(--accent); color: #fff; font: inherit; font-weight: 700;
  padding: .6rem 1.1rem; border-radius: 9px; cursor: pointer;
}
.primary-btn:hover { filter: brightness(1.08); }
.form-note { font-size: .76rem; color: var(--txt-faint); }
.local-list { list-style: none; margin: 0 0 1rem; padding: 0; display: flex; flex-direction: column; gap: .4rem; }
.local-list li { display: flex; justify-content: space-between; align-items: center; gap: .5rem; font-size: .86rem; padding: .4rem .55rem; background: var(--panel-2); border-radius: 8px; }
.local-list .muted { color: var(--txt-faint); background: transparent; }
.local-list button { background: transparent; border: 0; color: var(--bad); cursor: pointer; font-size: 1rem; }
.import-data-actions { display: flex; gap: .5rem; margin-bottom: .8rem; }

/* ---------- prose ---------- */
.prose { max-width: 70ch; color: var(--txt-dim); }
.prose p, .prose li { margin: 0 0 .8rem; }
.prose strong { color: var(--txt); }
.prose em { color: var(--accent-2); font-style: normal; }
.prose h2 { color: var(--txt); margin-top: 1.6rem; }
.prose ul { padding-left: 1.2rem; }
.prose code { background: var(--code-bg); padding: .1rem .35rem; border-radius: 5px; font-size: .85em; }

/* ---------- task dialog ---------- */
.task-dialog {
  border: 1px solid var(--line-solid); border-radius: 16px; background: var(--panel); color: var(--txt);
  max-width: min(960px, 94vw); width: 100%; padding: 0; box-shadow: var(--shadow);
}
.task-dialog::backdrop { background: rgba(4,6,12,.62); backdrop-filter: blur(3px); }
.dlg-head { display: flex; justify-content: space-between; align-items: flex-start; gap: 1rem; padding: 1.1rem 1.2rem; border-bottom: 1px solid var(--line); position: sticky; top: 0; background: var(--panel); }
.dlg-head h2 { margin: 0; }
.dlg-head .prompt { color: var(--txt-dim); font-size: .88rem; margin-top: .4rem; white-space: pre-wrap; }
.dlg-close { background: var(--panel-2); border: 1px solid var(--line-solid); color: var(--txt); cursor: pointer; border-radius: 8px; width: 34px; height: 34px; flex-shrink: 0; font-size: 1rem; }
.dlg-body { padding: 1.1rem 1.2rem; max-height: 70vh; overflow-y: auto; display: flex; flex-direction: column; gap: 1rem; }
.entry { border: 1px solid var(--line-solid); border-radius: 12px; overflow: hidden; }
.entry-head { display: flex; align-items: center; gap: .6rem; padding: .6rem .85rem; background: var(--panel-2); flex-wrap: wrap; }
.entry-head .nm { font-weight: 700; }
.entry-head .vd { color: var(--txt-faint); font-size: .78rem; }
.entry-head .scorechips { display: flex; gap: .35rem; margin-left: auto; flex-wrap: wrap; }
.scorechip { font-size: .7rem; font-variant-numeric: tabular-nums; padding: .12rem .45rem; border-radius: 6px; background: var(--panel); border: 1px solid var(--line); color: var(--txt-dim); }
.scorechip b { color: var(--txt); }
.entry pre { margin: 0; padding: .8rem 1rem; overflow-x: auto; background: var(--code-bg); font-size: .8rem; line-height: 1.5; }
.entry .note { padding: .55rem .85rem; font-size: .82rem; color: var(--txt-dim); border-top: 1px solid var(--line); }
.entry.best { border-color: color-mix(in srgb, var(--good) 55%, var(--line-solid)); }
.entry.best .entry-head { background: color-mix(in srgb, var(--good) 14%, var(--panel-2)); }

/* ---------- footer ---------- */
.site-footer {
  text-align: center; color: var(--txt-faint); font-size: .82rem;
  padding: 1.6rem 1rem 2.2rem; border-top: 1px solid var(--line); margin-top: 1rem;
}

/* ---------- responsive ---------- */
@media (max-width: 880px) {
  .board-layout { grid-template-columns: 1fr; }
  .weights { position: static; }
  .import-grid { grid-template-columns: 1fr; }
  .brand-tag { display: none; }
}
@media (max-width: 720px) {
  .arena-stage { grid-template-columns: 1fr; }
  .arena-mid { flex-direction: row; order: 3; margin-top: .2rem; }
  .topbar { flex-wrap: wrap; }
  .tabs { order: 3; width: 100%; margin-left: 0; justify-content: space-between; }
  .board-row { grid-template-columns: 1.6rem 1fr 4rem; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .001ms !important; transition-duration: .001ms !important; scroll-behavior: auto !important; }
}