/* Control Board Simulator: shared stylesheet
   Dark electronics-lab theme used by the dashboard and every module page. */

:root {
  --bg: #0d1117;
  --bg-raised: #161b22;
  --bg-inset: #010409;
  --border: #30363d;
  --text: #e6edf3;
  --text-dim: #9aa7b3;
  --accent: #ff8c1a;        /* amber, main accent */
  --ftc: #ff6d00;           /* alternate accent, kept for compatibility */
  --frc: #339af0;           /* FRC blue */
  --good: #3fb950;
  --warn: #d29922;
  --bad: #f85149;
  --year1: #3fb950;
  --year2: #388bfd;
  --year3: #a371f7;
  --year4: #f0883e;
  --mono: "SF Mono", SFMono-Regular, Menlo, Consolas, monospace;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  line-height: 1.55;
}

.wrap {
  max-width: 980px;
  margin: 0 auto;
  padding: 0 20px 80px;
}

a { color: var(--frc); text-decoration: none; }
a:hover { text-decoration: underline; }

h1, h2, h3 { line-height: 1.25; }
h1 { font-size: 1.9rem; margin: 0.4em 0; }
h2 {
  font-size: 1.35rem;
  margin-top: 2.2em;
  padding-bottom: 6px;
  border-bottom: 1px solid var(--border);
}
h3 { font-size: 1.1rem; margin-top: 1.6em; }

p, li { color: var(--text); }
.dim { color: var(--text-dim); }
code {
  font-family: var(--mono);
  font-size: 0.9em;
  background: var(--bg-inset);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 1px 5px;
}
pre {
  background: var(--bg-inset);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 14px;
  overflow-x: auto;
  font-family: var(--mono);
  font-size: 0.85rem;
  line-height: 1.5;
}
pre code { background: none; border: none; padding: 0; }

/* ---------- Top bar on every page ---------- */
.topbar {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 0;
  border-bottom: 1px solid var(--border);
  margin-bottom: 8px;
  flex-wrap: wrap;
}
.topbar .logo {
  font-weight: 700;
  letter-spacing: 0.5px;
  color: var(--accent);
  font-size: 1.05rem;
}
.topbar .logo span { color: var(--text-dim); font-weight: 400; }
.topbar .spacer { flex: 1; }

/* ---------- Badges ---------- */
.badge {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.6px;
  text-transform: uppercase;
  padding: 3px 9px;
  border-radius: 999px;
  border: 1px solid var(--border);
  color: var(--text-dim);
}
.badge.year1 { color: var(--year1); border-color: var(--year1); }
.badge.year2 { color: var(--year2); border-color: var(--year2); }
.badge.year3 { color: var(--year3); border-color: var(--year3); }
.badge.year4 { color: var(--year4); border-color: var(--year4); }
.badge.ftc { color: var(--ftc); border-color: var(--ftc); }
.badge.frc { color: var(--frc); border-color: var(--frc); }
.badge.done { color: var(--good); border-color: var(--good); }

/* ---------- Cards / panels ---------- */
.card {
  background: var(--bg-raised);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 18px 20px;
  margin: 18px 0;
}
.callout {
  border-left: 4px solid var(--accent);
  background: var(--bg-raised);
  border-radius: 0 8px 8px 0;
  padding: 12px 16px;
  margin: 16px 0;
}
.callout.good { border-left-color: var(--good); }
.callout.warn { border-left-color: var(--warn); }
.callout.bad { border-left-color: var(--bad); }
.callout.ftc { border-left-color: var(--ftc); }
.callout.frc { border-left-color: var(--frc); }
.callout > :first-child { margin-top: 4px; }
.callout > :last-child { margin-bottom: 4px; }

/* ---------- Dashboard module grid ---------- */
.module-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 14px;
  margin: 14px 0 30px;
}
.module-card {
  background: var(--bg-raised);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  position: relative;
  transition: border-color 0.15s ease, transform 0.15s ease;
}
.module-card.unlocked:hover {
  border-color: var(--accent);
  transform: translateY(-2px);
}
.module-card h3 { margin: 2px 0; font-size: 1.02rem; }
.module-card .num {
  font-family: var(--mono);
  font-size: 0.78rem;
  color: var(--text-dim);
}
.module-card .tagline { font-size: 0.86rem; color: var(--text-dim); flex: 1; }
.module-card a.stretch::after {
  content: "";
  position: absolute;
  inset: 0;
}
.module-card.locked { opacity: 0.55; }
.module-card.locked .lock-note {
  font-size: 0.8rem;
  color: var(--warn);
}
.module-card .score {
  font-size: 0.8rem;
  color: var(--good);
  font-family: var(--mono);
}

/* ---------- Progress bar ---------- */
.progress-outer {
  background: var(--bg-inset);
  border: 1px solid var(--border);
  border-radius: 999px;
  height: 14px;
  overflow: hidden;
  margin: 10px 0;
}
.progress-inner {
  height: 100%;
  background: linear-gradient(90deg, var(--year1), var(--accent));
  border-radius: 999px;
  width: 0%;
  transition: width 0.4s ease;
}

/* ---------- Module nav (prev / next) ---------- */
.module-nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  margin: 26px 0;
  flex-wrap: wrap;
}
.module-nav .btn { min-width: 130px; text-align: center; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-block;
  background: var(--bg-raised);
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: 8px;
  padding: 8px 16px;
  font-size: 0.92rem;
  cursor: pointer;
  text-decoration: none;
  transition: background 0.15s ease, border-color 0.15s ease;
}
.btn:hover { border-color: var(--accent); text-decoration: none; }
.btn.primary {
  background: var(--accent);
  border-color: var(--accent);
  color: #1a1006;
  font-weight: 700;
}
.btn.primary:hover { filter: brightness(1.1); }
.btn.disabled, .btn:disabled {
  opacity: 0.45;
  pointer-events: none;
}
.btn.small { padding: 5px 10px; font-size: 0.8rem; }

/* ---------- Tabs ---------- */
.tabs { margin: 18px 0; }
.tab-row {
  display: flex;
  gap: 6px;
  border-bottom: 2px solid var(--border);
  margin-bottom: 0;
}
.tab-btn {
  background: none;
  border: none;
  border-bottom: 3px solid transparent;
  color: var(--text-dim);
  padding: 8px 16px;
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  margin-bottom: -2px;
}
.tab-btn:hover { color: var(--text); }
.tab-btn.active { color: var(--text); }
.tab-btn.active.ftc-tab { border-bottom-color: var(--ftc); color: var(--ftc); }
.tab-btn.active.frc-tab { border-bottom-color: var(--frc); color: var(--frc); }
.tab-btn.active:not(.ftc-tab):not(.frc-tab) { border-bottom-color: var(--accent); color: var(--accent); }
.tab-panel { display: none; padding: 16px 4px 4px; }
.tab-panel.active { display: block; }

/* ---------- Simulator panels ---------- */
.sim {
  background: var(--bg-inset);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 18px;
  margin: 20px 0;
}
.sim h3 { margin-top: 0; color: var(--accent); }
.sim-controls {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
  align-items: center;
  margin: 14px 0;
}
.sim-controls .ctl { display: flex; flex-direction: column; gap: 4px; min-width: 180px; }
.sim-controls label { font-size: 0.82rem; color: var(--text-dim); }
.sim-controls .val {
  font-family: var(--mono);
  font-size: 0.95rem;
  color: var(--accent);
}
.readouts {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin: 12px 0;
}
.readout {
  background: var(--bg-raised);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 10px 14px;
  min-width: 120px;
}
.readout .label { font-size: 0.72rem; text-transform: uppercase; letter-spacing: 0.5px; color: var(--text-dim); }
.readout .value { font-family: var(--mono); font-size: 1.25rem; color: var(--text); }
.readout.good .value { color: var(--good); }
.readout.warn .value { color: var(--warn); }
.readout.bad .value { color: var(--bad); }

input[type="range"] {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 6px;
  background: var(--border);
  border-radius: 3px;
  outline: none;
}
input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--accent);
  cursor: pointer;
  border: 2px solid #1a1006;
}
input[type="range"]::-moz-range-thumb {
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--accent);
  cursor: pointer;
  border: 2px solid #1a1006;
}

select, input[type="text"], input[type="number"] {
  background: var(--bg-raised);
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: 6px;
  padding: 6px 10px;
  font-size: 0.9rem;
}

svg text { font-family: var(--mono); }

/* ---------- Tables ---------- */
table {
  border-collapse: collapse;
  width: 100%;
  margin: 14px 0;
  font-size: 0.9rem;
}
th, td {
  border: 1px solid var(--border);
  padding: 8px 12px;
  text-align: left;
  vertical-align: top;
}
th { background: var(--bg-raised); color: var(--text); }
tr:nth-child(even) td { background: rgba(255, 255, 255, 0.02); }
.table-scroll { overflow-x: auto; }

/* ---------- Quiz ---------- */
.quiz { margin: 24px 0; }
.quiz-q {
  background: var(--bg-raised);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 16px 18px;
  margin: 14px 0;
}
.quiz-q .qtext { font-weight: 600; margin-bottom: 10px; }
.quiz-q label.choice {
  display: block;
  padding: 8px 12px;
  margin: 6px 0;
  border: 1px solid var(--border);
  border-radius: 8px;
  cursor: pointer;
  font-size: 0.92rem;
  transition: border-color 0.1s ease;
}
.quiz-q label.choice:hover { border-color: var(--accent); }
.quiz-q label.choice input { margin-right: 10px; }
.quiz-q.graded label.choice { pointer-events: none; }
.quiz-q label.choice.correct { border-color: var(--good); background: rgba(63, 185, 80, 0.1); }
.quiz-q label.choice.incorrect { border-color: var(--bad); background: rgba(248, 81, 73, 0.1); }
.quiz-q .explain {
  display: none;
  margin-top: 10px;
  padding: 10px 12px;
  border-left: 3px solid var(--frc);
  background: var(--bg-inset);
  border-radius: 0 6px 6px 0;
  font-size: 0.88rem;
  color: var(--text-dim);
}
.quiz-q.graded .explain { display: block; }
.quiz-result {
  margin: 18px 0;
  padding: 16px 18px;
  border-radius: 10px;
  border: 1px solid var(--border);
  display: none;
}
.quiz-result.pass { display: block; border-color: var(--good); background: rgba(63, 185, 80, 0.08); }
.quiz-result.fail { display: block; border-color: var(--warn); background: rgba(210, 153, 34, 0.08); }

/* ---------- Lock overlay ---------- */
.lock-screen {
  text-align: center;
  padding: 60px 20px;
}
.lock-screen .icon { font-size: 3rem; }

/* ---------- Key terms ---------- */
.terms {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 12px 0;
}
.term {
  background: var(--bg-raised);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 4px 12px;
  font-size: 0.8rem;
  color: var(--text-dim);
}
.term b { color: var(--text); }

/* ---------- Hero (dashboard) ---------- */
.hero {
  padding: 34px 0 10px;
}
.hero h1 { font-size: 2.1rem; margin-bottom: 8px; }
.hero .sub { color: var(--text-dim); font-size: 1.05rem; max-width: 720px; }

.year-header {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-top: 34px;
}
.year-header h2 { border: none; margin: 0; padding: 0; }

footer.site {
  margin-top: 60px;
  padding-top: 16px;
  border-top: 1px solid var(--border);
  color: var(--text-dim);
  font-size: 0.82rem;
}

@media (max-width: 620px) {
  .sim-controls .ctl { min-width: 100%; }
  h1 { font-size: 1.5rem; }
}