/* logic-gate-deflector.css */
:root {
  --paper: #0b0e14;
  --panel: #151922;
  --panel-2: #1c2230;
  --ink: #e0e6ed;
  --ink-soft: #a0aec0;
  --muted: #71838F;
  --line: #2d3548;
  --line-strong: #3a455d;
  --accent-cyan: #00f3ff;
  --accent-green: #00ff66;
  --accent-red: #ff3366;
  --accent-amber: #ffaa00;
  --wire-off: #2a3241;
  --wire-on: #00f3ff;
  --shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
  --font-mono: "IBM Plex Mono", ui-monospace, "SF Mono", Menlo, monospace;
  --font-display: "Archivo", "Helvetica Neue", Arial, sans-serif;
  --font-body: "Source Sans 3", -apple-system, "Segoe UI", Roboto, sans-serif;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

body {
  background: var(--paper);
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  padding: 0;
  margin: 0;
}

.wrap {
  max-width: 1080px;
  margin: 0 auto;
  padding: 24px 20px 64px;
  display: flex;
  flex-direction: column;
  gap: 22px;
}

/* ---------- Topbar ---------- */
.topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  background: var(--paper);
  border-bottom: 2px solid var(--accent-cyan);
  padding-block: 14px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}

.brand { display: flex; flex-direction: row; align-items: center; gap: 14px; }
.brand-logo {
  flex: none;
  height: 56px;
  width: auto;
  border-radius: 5px;
  background: #ffffff;
  padding: 6px;
  box-sizing: content-box;
}
.brand-text { display: flex; flex-direction: column; gap: 4px; }
.school {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--accent-cyan);
}
h1 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(22px, 3.2vw, 32px);
  line-height: 1.1;
  letter-spacing: -.02em;
  color: #ffffff;
}

.topbar-right { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.btn {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 13px;
  border-radius: 4px;
  padding: 8px 14px;
  cursor: pointer;
  border: 1px solid transparent;
  transition: transform .05s ease, background-color 0.15s;
}
.btn:active { transform: translateY(1px); }
.btn-primary { background: var(--accent-cyan); color: #000000; font-weight: 700; }
.btn-primary:hover { background: #00c4d0; }
.btn-ghost {
  background: transparent;
  border-color: var(--line-strong);
  color: var(--ink-soft);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
}
.btn-ghost:hover { border-color: var(--accent-cyan); color: var(--accent-cyan); }

.site-intro { max-width: 76ch; color: var(--ink-soft); font-size: 15.5px; }
.objective { font-size: 14.5px; color: var(--ink-soft); max-width: 76ch; margin-bottom: 8px; }
.objective strong { color: var(--ink); }

/* ---------- Accordion & Dialog ---------- */
details.acc { border: 1px solid var(--line); border-radius: 6px; background: var(--panel); box-shadow: var(--shadow); }
details.acc > summary {
  cursor: pointer;
  padding: 13px 16px;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 16px;
  display: flex;
  align-items: center;
  gap: 10px;
  list-style: none;
  color: var(--ink);
}
details.acc > summary::before {
  content: "";
  width: 0; height: 0;
  border-left: 6px solid var(--accent-cyan);
  border-top: 4.5px solid transparent;
  border-bottom: 4.5px solid transparent;
  transition: transform .15s;
}
details.acc[open] > summary::before { transform: rotate(90deg); }
details.acc > summary .hint {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .06em;
  text-transform: uppercase;
  color: var(--muted);
  margin-left: auto;
}
.acc-body { padding: 0 16px 16px; display: flex; flex-direction: column; gap: 8px; }

dialog {
  border: 1px solid var(--line-strong);
  border-radius: 8px;
  padding: 0;
  max-width: 780px;
  width: 94vw;
  background: var(--panel);
  color: var(--ink);
  box-shadow: var(--shadow);
}
dialog::backdrop { background: rgba(5, 8, 16, 0.8); }
.dialog-head { display: flex; align-items: center; justify-content: space-between; padding: 14px 18px; border-bottom: 1px solid var(--line); }
.dialog-head h3 { font-size: 16px; font-family: var(--font-display); color: var(--accent-cyan); }
.dialog-body { padding: 16px 18px; max-height: 65vh; overflow-y: auto; }
.close-x { border: 0; background: transparent; color: var(--muted); font-size: 20px; cursor: pointer; }
.close-x:hover { color: var(--ink); }
.tablewrap { overflow-x: auto; }
table { border-collapse: collapse; width: 100%; font-size: 13.5px; }
th, td { text-align: left; padding: 8px 10px; border-bottom: 1px solid var(--line); vertical-align: top; }
th { font-family: var(--font-display); font-size: 11px; letter-spacing: .06em; text-transform: uppercase; color: var(--muted); }
td.mi .gap { color: var(--muted); font-style: italic; font-size: 12.5px; }
.tnote { font-size: 12px; color: var(--muted); margin-top: 14px; }

/* ---------- Setup Screen ---------- */
.panel { background: var(--panel); border: 1px solid var(--line); border-radius: 8px; box-shadow: var(--shadow); overflow: hidden; }
.setup { padding: 24px; display: flex; flex-direction: column; gap: 20px; }
.setup-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.setup-group { display: flex; flex-direction: column; gap: 8px; }
.group-label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--muted);
}
.toggle-row { display: flex; gap: 8px; flex-wrap: wrap; }
.toggle-btn {
  flex: 1;
  min-width: 130px;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 14px;
  padding: 12px 14px;
  border: 1.5px solid var(--line-strong);
  border-radius: 6px;
  background: var(--panel-2);
  color: var(--ink-soft);
  cursor: pointer;
  text-align: center;
  transition: all .15s ease;
}
.toggle-btn:hover { border-color: var(--accent-cyan); }
.toggle-btn.active { border-color: var(--accent-cyan); color: #ffffff; background: rgba(0, 243, 255, 0.1); }
.toggle-btn .sub { display: block; font-family: var(--font-mono); font-size: 11px; color: var(--muted); margin-top: 2px; }

.howto { font-size: 13.5px; color: var(--ink-soft); padding-left: 20px; line-height: 1.6; }
.howto li { margin-bottom: 6px; }

.leaderboard-panel {
  background: var(--panel-2);
  border: 1px solid var(--line-strong);
  border-radius: 6px;
  padding: 10px 14px;
  font-family: var(--font-mono);
  font-size: 13px;
}
.leaderboard-table { width: 100%; border-collapse: collapse; }
.leaderboard-table td { padding: 4px 0; border: none; }
.leaderboard-table .rank { color: var(--muted); width: 24px; }
.leaderboard-table .name { color: var(--accent-cyan); font-weight: 700; letter-spacing: 1px; }
.leaderboard-table .score { text-align: right; font-weight: 700; color: var(--ink); }
.rejected-table .name, .rejected-table .score { color: var(--muted); }
.rejected-table .reason { text-align: right; padding-left: 10px; font-size: 11px; color: var(--muted); white-space: nowrap; }

.setup-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 14px;
  border-top: 1px solid var(--line);
  padding-top: 18px;
}
.best-score { font-family: var(--font-mono); font-size: 13px; color: var(--ink-soft); }
.best-score b { color: var(--accent-cyan); }
.launch-btn { font-size: 15px; padding: 12px 26px; }

/* ---------- Live Game HUD & Stage ---------- */
.game-hud {
  background: var(--panel-2);
  padding: 12px 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 2px solid var(--line);
}
.hud-title { font-family: var(--font-mono); font-size: 0.9rem; font-weight: 700; color: var(--accent-cyan); letter-spacing: 1px; }
.stats-bar { display: flex; gap: 20px; font-family: var(--font-mono); font-weight: bold; font-size: 0.9rem; }
.stat-value { color: var(--accent-cyan); }
.hud-controls { display: flex; gap: 8px; }
.icon-btn {
  width: 28px; height: 28px;
  border-radius: 4px;
  border: 1px solid var(--line-strong);
  background: var(--panel);
  color: var(--ink-soft);
  cursor: pointer;
  display: flex; align-items: center; justify-content: center;
}
.icon-btn:hover { border-color: var(--accent-cyan); color: #fff; }

#timer-bar-container { width: 100%; height: 6px; background: #2a3241; }
#timer-bar { width: 100%; height: 100%; background: var(--accent-cyan); transition: width 0.1s linear, background-color 0.3s; }

/* Workspace Animation & Wiring */
@keyframes pulse-bg {
  0% { background-position: 0% 50%; filter: hue-rotate(0deg); }
  50% { background-position: 100% 50%; filter: hue-rotate(30deg); }
  100% { background-position: 0% 50%; filter: hue-rotate(0deg); }
}

#workspace {
  position: relative;
  height: 420px;
  background: linear-gradient(135deg, #0b0e14, #181d28, #111827);
  background-size: 200% 200%;
  animation: pulse-bg 12s ease infinite;
  display: flex;
  justify-content: space-between;
  padding: 20px 50px;
  overflow: hidden;
}

#circuit-svg {
  position: absolute;
  top: 0; left: 0;
  width: 100%; height: 100%;
  z-index: 1;
  pointer-events: none;
}

.stage-column {
  display: flex;
  flex-direction: column;
  justify-content: space-around;
  z-index: 2;
}

.node-bus {
  background: rgba(28, 34, 48, 0.95);
  border: 2px solid var(--line-strong);
  border-radius: 8px;
  padding: 8px 14px;
  text-align: center;
  font-family: var(--font-mono);
  font-weight: bold;
  min-width: 75px;
  box-shadow: 0 4px 10px rgba(0,0,0,0.4);
  transition: transform 0.4s ease;
}
.node-bus .val { font-size: 1.2rem; color: var(--accent-cyan); }

.gate-slot {
  width: 110px; height: 80px;
  border: 2px dashed #4a5568;
  border-radius: 8px;
  background: rgba(21, 25, 34, 0.88);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: transform 0.3s ease, border-color 0.2s, box-shadow 0.2s;
  position: relative;
  backdrop-filter: blur(4px);
}
.gate-slot:hover { border-color: var(--accent-cyan); box-shadow: 0 0 15px rgba(0, 243, 255, 0.3); }
.gate-slot.selected { border-color: var(--accent-amber); border-style: solid; box-shadow: 0 0 15px rgba(255, 170, 0, 0.4); }
.gate-slot.locked { border-style: solid; border-color: var(--line); cursor: not-allowed; background: rgba(25, 31, 45, 0.9); }
.gate-label { font-family: var(--font-mono); font-size: 1.15rem; font-weight: bold; letter-spacing: 1px; }
.gate-sub { font-size: 0.65rem; color: var(--muted); margin-top: 4px; text-transform: uppercase; font-family: var(--font-mono); }

/* SVG Wires */
.wire { fill: none; stroke: var(--wire-off); stroke-width: 3; transition: stroke 0.3s ease; }
.wire.active {
  stroke: var(--wire-on);
  stroke-dasharray: 8 4;
  animation: wirePulse 1s linear infinite;
  filter: drop-shadow(0px 0px 4px var(--accent-cyan));
}
@keyframes wirePulse { to { stroke-dashoffset: -12; } }
.junction-dot { fill: var(--accent-cyan); filter: drop-shadow(0px 0px 3px var(--accent-cyan)); }

/* Matrix Test Panel */
#matrix-panel {
  background: #11141c;
  border-top: 2px solid var(--line);
  padding: 12px 25px;
  display: flex;
  gap: 20px;
  align-items: center;
}
.matrix-title {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--ink-soft);
  width: 160px;
}
.vector-list { display: flex; gap: 12px; flex-grow: 1; }
.vector-card {
  background: var(--panel-2);
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 8px 12px;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  display: flex;
  align-items: center;
  gap: 10px;
  flex: 1;
  justify-content: space-between;
}
.status-indicator { width: 10px; height: 10px; border-radius: 50%; background: #4a5568; }
.status-indicator.pass { background: var(--accent-green); box-shadow: 0 0 8px var(--accent-green); }
.status-indicator.fail { background: var(--accent-red); box-shadow: 0 0 8px var(--accent-red); }

/* Gate Palette Panel */
#palette-panel {
  background: #181d28;
  border-top: 1px solid var(--line);
  padding: 12px 25px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
}
.palette-buttons { display: flex; gap: 8px; flex-wrap: wrap; }
.gate-btn {
  background: #222a3c;
  border: 1px solid var(--line-strong);
  color: var(--ink);
  font-family: var(--font-mono);
  padding: 8px 16px;
  font-weight: bold;
  border-radius: 6px;
  cursor: pointer;
  transition: all 0.15s ease;
}
.gate-btn:hover { background: var(--accent-cyan); color: #000; border-color: var(--accent-cyan); box-shadow: 0 0 10px rgba(0, 243, 255, 0.4); }
.action-btn {
  background: var(--accent-green);
  color: #000;
  border: none;
  font-family: var(--font-display);
  padding: 10px 22px;
  font-weight: bold;
  border-radius: 6px;
  cursor: pointer;
  text-transform: uppercase;
  letter-spacing: 1px;
  transition: all 0.2s ease;
}
.action-btn:hover { box-shadow: 0 0 15px rgba(0, 255, 102, 0.4); }

/* Overlay */
.stage-overlay {
  position: absolute;
  inset: 0;
  background: rgba(11, 14, 20, 0.94);
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  z-index: 10;
  padding: 20px;
  text-align: center;
}
.stage-overlay.visible { display: flex; }
.stage-overlay h3 { font-family: var(--font-display); font-size: 1.8rem; color: var(--accent-red); margin-bottom: 8px; }
.stage-overlay p { color: var(--ink-soft); margin-bottom: 14px; max-width: 500px; font-size: 0.95rem; }
.score-final { font-family: var(--font-mono); font-size: 1rem; color: #fff; margin-bottom: 12px; }
.score-final b { font-size: 1.6rem; color: var(--accent-amber); }
.overlay-btns { display: flex; gap: 10px; margin-top: 10px; }

footer {
  border-top: 1px solid var(--line);
  padding-top: 16px;
  font-size: 13px;
  color: var(--muted);
  display: flex;
  flex-wrap: wrap;
  gap: 6px 20px;
}

@media (max-width: 768px) {
  .setup-grid { grid-template-columns: 1fr; }
  #workspace { padding: 10px 15px; height: 360px; }
  .gate-slot { width: 85px; height: 65px; }
  #palette-panel { flex-direction: column; align-items: stretch; }
  .vector-list { flex-direction: column; }
}

/* Truth Table Styling */
.truth-table {
  width: 100%;
  border-collapse: collapse;
  font-family: var(--font-mono);
  font-size: 0.9rem;
  text-align: center;
}

.truth-table th,
.truth-table td {
  padding: 6px 14px;
  border: 1px solid var(--line);
  vertical-align: middle;
}

.truth-table th {
  background: var(--panel-2);
  color: var(--accent-cyan);
  font-size: 0.75rem;
  letter-spacing: 1px;
  text-transform: uppercase;
}

.truth-table td b {
  color: var(--accent-amber);
}

.tb-badge {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 4px;
  font-weight: bold;
  font-size: 0.75rem;
  letter-spacing: 0.5px;
}

.tb-badge.pending {
  background: #2a3241;
  color: var(--muted);
}

.tb-badge.pass {
  background: rgba(0, 255, 102, 0.15);
  color: var(--accent-green);
  border: 1px solid var(--accent-green);
}

.tb-badge.fail {
  background: rgba(255, 51, 102, 0.15);
  color: var(--accent-red);
  border: 1px solid var(--accent-red);
}