/* Blue vs Red: Ghost in the Assistant — CTF portal styles
   Dark theme. Colors use the validated data-viz dark palette; status hues are
   reserved and always paired with a text label (identity never color-alone). */

:root {
  color-scheme: dark;
  --surface-0: #0e1116;   /* page */
  --surface-1: #161b22;   /* panels/cards */
  --surface-2: #1c232d;   /* raised */
  --surface-3: #232c38;   /* hover */
  --border:    #2c3644;
  --border-2:  #3a4655;
  --ink:       #ffffff;
  --ink-2:     #c3c2b7;
  --ink-3:     #8b94a3;
  --accent:    #3987e5;   /* blue — interactive */
  --accent-ink:#bcd8fb;
  --good:      #199e70;   /* aqua/green — solved / correct */
  --good-ink:  #7fe6c0;
  --warn:      #c98500;   /* amber */
  --bad:       #e66767;   /* red — incorrect */
  --core:      #3987e5;
  --stretch:   #9085e9;   /* violet */
  --mono: ui-monospace, "SF Mono", "JetBrains Mono", "Fira Code", Menlo, Consolas, monospace;
  --sans: system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --radius: 12px;
  --shadow: 0 8px 30px rgba(0,0,0,.35);
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  background:
    radial-gradient(1100px 500px at 80% -10%, rgba(57,135,229,.10), transparent 60%),
    radial-gradient(900px 500px at -10% 10%, rgba(144,133,233,.08), transparent 55%),
    var(--surface-0);
  color: var(--ink);
  font-family: var(--sans);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
}
a { color: var(--accent-ink); }
h1,h2,h3 { line-height: 1.2; margin: 0; }
code, .mono { font-family: var(--mono); }

/* ---------- top bar ---------- */
.topbar {
  position: sticky; top: 0; z-index: 30;
  backdrop-filter: blur(8px);
  background: color-mix(in srgb, var(--surface-0) 86%, transparent);
  border-bottom: 1px solid var(--border);
}
.topbar-inner {
  max-width: 1160px; margin: 0 auto; padding: 10px 20px;
  display: flex; align-items: center; gap: 14px; row-gap: 10px; flex-wrap: wrap;
}
.topbar-actions { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.brand { display: flex; align-items: center; gap: 12px; margin-right: auto; }
.brand .glyph {
  width: 38px; height: 38px; border-radius: 10px; flex: none;
  background: linear-gradient(135deg, var(--accent), var(--stretch));
  display: grid; place-items: center; font-weight: 800; color: #fff; font-size: 14px;
  white-space: nowrap; letter-spacing: -0.5px;
  box-shadow: inset 0 0 0 1px rgba(255,255,255,.15);
}
.brand h1 { font-size: 15px; letter-spacing: .2px; }
.brand .sub { font-size: 12px; color: var(--ink-3); }

.stat { display: flex; flex-direction: column; align-items: flex-end; line-height: 1.1; }
.stat .num { font-size: 18px; font-weight: 800; font-variant-numeric: tabular-nums; }
.stat .lbl { font-size: 10px; text-transform: uppercase; letter-spacing: .8px; color: var(--ink-3); }

.progresswrap { min-width: 160px; display: flex; flex-direction: column; gap: 5px; }
.progressbar { height: 8px; border-radius: 999px; background: var(--surface-2); overflow: hidden; border: 1px solid var(--border); }
.progressbar > span { display: block; height: 100%; width: 0%;
  background: linear-gradient(90deg, var(--accent), var(--good)); transition: width .5s ease; }
.progresswrap .lbl { font-size: 10px; color: var(--ink-3); text-transform: uppercase; letter-spacing: .8px; }

.btn {
  font: inherit; font-size: 13px; font-weight: 600; cursor: pointer;
  background: var(--surface-2); color: var(--ink); border: 1px solid var(--border-2);
  padding: 8px 12px; border-radius: 9px; transition: background .15s, border-color .15s, transform .05s;
}
.btn:hover { background: var(--surface-3); border-color: var(--accent); }
.btn:active { transform: translateY(1px); }
.btn.primary { background: var(--accent); border-color: var(--accent); color: #fff; }
.btn.primary:hover { filter: brightness(1.08); }
.btn.ghost { background: transparent; }
.btn.small { padding: 6px 10px; font-size: 12px; }
.btn:focus-visible, a:focus-visible, input:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

.trackpill {
  display: inline-flex; align-items: center; gap: 8px; font-size: 12px; font-weight: 700;
  background: var(--surface-2); border: 1px solid var(--border-2); border-radius: 999px; padding: 5px 12px;
}
.trackpill .dot { width: 9px; height: 9px; border-radius: 50%; background: var(--accent); }
.trackpill.advanced .dot { background: var(--stretch); }

/* ---------- layout ---------- */
.wrap { max-width: 1160px; margin: 0 auto; padding: 26px 20px 80px; }
.toolbar { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; margin-bottom: 20px; }
.toolbar .spacer { margin-left: auto; }
.filterchips { display: flex; gap: 6px; flex-wrap: wrap; }
.chip {
  font-size: 12px; font-weight: 600; padding: 5px 11px; border-radius: 999px; cursor: pointer;
  background: var(--surface-1); border: 1px solid var(--border); color: var(--ink-2);
}
.chip[aria-pressed="true"] { background: var(--surface-3); color: var(--ink); border-color: var(--accent); }

/* ---------- phase sections ---------- */
.phase { margin: 28px 0 8px; }
.phase-head { display: flex; align-items: baseline; gap: 12px; margin-bottom: 12px; padding-bottom: 8px; border-bottom: 1px solid var(--border); }
.phase-code {
  font-family: var(--mono); font-weight: 800; font-size: 13px; color: #fff;
  padding: 3px 8px; border-radius: 7px; background: var(--surface-2); border-left: 3px solid var(--phase, var(--accent));
}
.phase-name { font-size: 17px; font-weight: 700; }
.phase-desc { font-size: 13px; color: var(--ink-3); margin-left: auto; text-align: right; max-width: 48ch; }

.cards { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 14px; }
.card {
  text-align: left; cursor: pointer; position: relative;
  background: var(--surface-1); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 16px; transition: border-color .15s, transform .08s, background .15s; color: inherit; font: inherit;
  display: flex; flex-direction: column; gap: 10px; min-height: 118px;
}
.card:hover { border-color: var(--accent); transform: translateY(-2px); background: var(--surface-2); }
.card.solved { border-color: color-mix(in srgb, var(--good) 60%, var(--border)); }
.card.solved::after {
  content: "✓ SOLVED"; position: absolute; top: 12px; right: 12px;
  font-size: 10px; font-weight: 800; letter-spacing: .5px; color: var(--good-ink);
  background: color-mix(in srgb, var(--good) 22%, transparent); border: 1px solid var(--good);
  padding: 3px 7px; border-radius: 999px;
}
.card .ctitle { font-size: 15px; font-weight: 700; padding-right: 70px; }
.card .cmeta { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; margin-top: auto; }
.tier { font-size: 10px; font-weight: 800; letter-spacing: .5px; text-transform: uppercase; padding: 3px 7px; border-radius: 6px; display: inline-flex; align-items: center; gap: 5px; }
.tier.core { color: var(--accent-ink); background: color-mix(in srgb, var(--core) 18%, transparent); border: 1px solid color-mix(in srgb, var(--core) 55%, transparent); }
.tier.stretch { color: #cfc9fb; background: color-mix(in srgb, var(--stretch) 18%, transparent); border: 1px solid color-mix(in srgb, var(--stretch) 55%, transparent); }
.points { font-family: var(--mono); font-weight: 800; font-size: 13px; color: var(--ink); }
.points small { color: var(--ink-3); font-weight: 600; }
.card .cev { font-size: 11px; color: var(--ink-3); font-family: var(--mono); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

/* ---------- modal ---------- */
.overlay {
  position: fixed; inset: 0; z-index: 50; display: none;
  background: rgba(6,9,13,.66); backdrop-filter: blur(3px);
  align-items: flex-start; justify-content: center; padding: 5vh 16px;
  overflow-y: auto;
}
.overlay.open { display: flex; }
.modal {
  width: min(720px, 100%); background: var(--surface-1); border: 1px solid var(--border-2);
  border-radius: 16px; box-shadow: var(--shadow); overflow: hidden;
  animation: pop .18s ease;
}
@keyframes pop { from { transform: translateY(8px) scale(.99); opacity: 0; } to { transform: none; opacity: 1; } }
.modal-head { padding: 18px 20px; border-bottom: 1px solid var(--border); position: relative; }
.modal-head .badges { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; margin-bottom: 8px; }
.modal-head h2 { font-size: 20px; }
.modal-head .cid { font-family: var(--mono); font-size: 11px; color: var(--ink-3); margin-top: 4px; }
.modal-close { position: absolute; top: 14px; right: 14px; background: var(--surface-2); border: 1px solid var(--border-2); color: var(--ink-2); width: 32px; height: 32px; border-radius: 8px; cursor: pointer; font-size: 16px; }
.modal-close:hover { background: var(--surface-3); color: var(--ink); }
.modal-body { padding: 18px 20px; display: flex; flex-direction: column; gap: 16px; }
.section-label { font-size: 11px; text-transform: uppercase; letter-spacing: .9px; color: var(--ink-3); font-weight: 700; margin-bottom: 6px; }
.prompt { white-space: pre-wrap; font-size: 14.5px; color: var(--ink); }
.panel { background: var(--surface-0); border: 1px solid var(--border); border-radius: 10px; padding: 12px 14px; }
.kv { font-size: 13px; }
.kv b { color: var(--ink-2); font-weight: 600; }
.tmpl { font-family: var(--mono); font-size: 13px; color: var(--good-ink); }
.evlist { display: flex; flex-wrap: wrap; gap: 8px; }
.evlink { font-family: var(--mono); font-size: 12px; text-decoration: none; color: var(--accent-ink);
  background: var(--surface-2); border: 1px solid var(--border-2); border-radius: 8px; padding: 6px 10px; display: inline-flex; gap: 6px; align-items: center; }
.evlink:hover { border-color: var(--accent); background: var(--surface-3); }

.hints { display: flex; flex-direction: column; gap: 8px; }
.hint { background: var(--surface-0); border: 1px dashed var(--border-2); border-radius: 9px; padding: 10px 12px; font-size: 13.5px; color: var(--ink-2); }
.hint.locked { display: flex; align-items: center; justify-content: space-between; gap: 10px; }
.hint .revealed { color: var(--ink); }
.hint .warn { color: var(--warn); font-size: 11px; }

.answer { display: flex; gap: 8px; flex-wrap: wrap; }
.answer input {
  flex: 1 1 320px; min-width: 220px; font-family: var(--mono); font-size: 14px;
  background: var(--surface-0); color: var(--ink); border: 1px solid var(--border-2); border-radius: 9px; padding: 11px 12px;
}
.answer input::placeholder { color: var(--ink-3); }
.feedback { font-size: 13.5px; font-weight: 600; min-height: 20px; display: flex; align-items: center; gap: 8px; }
.feedback.ok { color: var(--good-ink); }
.feedback.err { color: #f6a5a5; }
.solvedbanner { display: flex; align-items: center; gap: 10px; background: color-mix(in srgb, var(--good) 15%, transparent); border: 1px solid var(--good); color: var(--good-ink); border-radius: 10px; padding: 12px 14px; font-weight: 700; }

.shake { animation: shake .35s; }
@keyframes shake { 10%,90%{transform:translateX(-1px);} 30%,70%{transform:translateX(-4px);} 50%{transform:translateX(4px);} }

/* ---------- briefing overlay ---------- */
.briefing .modal { width: min(760px, 100%); }
.story { font-size: 14.5px; color: var(--ink-2); }
.story p { margin: 0 0 12px; }
.story strong { color: var(--ink); }
.trackpick { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-top: 6px; }
.trackcard { text-align: left; cursor: pointer; background: var(--surface-0); border: 1px solid var(--border-2); border-radius: 12px; padding: 16px; color: inherit; font: inherit; transition: border-color .15s, background .15s; }
.trackcard:hover { border-color: var(--accent); background: var(--surface-2); }
.trackcard h3 { font-size: 16px; margin-bottom: 6px; display: flex; align-items: center; gap: 8px; }
.trackcard.adv h3 .dot, .trackcard .dot { width: 10px; height: 10px; border-radius: 50%; background: var(--accent); }
.trackcard.adv .dot { background: var(--stretch); }
.trackcard p { font-size: 13px; color: var(--ink-3); margin: 0; }
.trackcard .meta { margin-top: 10px; font-size: 12px; color: var(--ink-2); font-family: var(--mono); }

.rules { font-size: 12.5px; color: var(--ink-3); }
.rules code { color: var(--good-ink); }

/* confetti */
.confetti { position: fixed; inset: 0; pointer-events: none; z-index: 60; overflow: hidden; }
.confetti i { position: absolute; width: 8px; height: 12px; top: -14px; opacity: .95; will-change: transform; animation: fall linear forwards; }
@keyframes fall { to { transform: translateY(105vh) rotate(540deg); opacity: 1; } }

footer { max-width: 1160px; margin: 0 auto; padding: 30px 20px 60px; color: var(--ink-3); font-size: 12.5px; border-top: 1px solid var(--border); }
footer a { color: var(--accent-ink); }

@media (max-width: 620px) {
  .phase-desc { display: none; }
  .trackpick { grid-template-columns: 1fr; }
  .stat.hide-sm { display: none; }
}
@media (prefers-reduced-motion: reduce) {
  * { animation-duration: .001ms !important; transition: none !important; }
}