/* ============================================================
   Laboratory page styles - builds on style.css
   ============================================================ */

.lab-hero {
  position: relative;
  overflow: hidden;
  background: linear-gradient(135deg, #062416 0%, var(--navy) 55%, var(--navy-light) 100%);
  color: #fff;
  padding: 34px 0 30px;
}
.lab-hero::after {
  content: "";
  position: absolute; inset: 0; z-index: 2; pointer-events: none;
  background: linear-gradient(to right, rgba(5,31,19,0.80) 0%, rgba(5,31,19,0.45) 48%, rgba(5,31,19,0.05) 100%);
}
.lab-hero .container { position: relative; z-index: 3; }
.lab-hero .crumb {
  font-family: var(--mono);
  font-size: 0.8rem;
  color: #c9c3ad;
  margin-bottom: 10px;
}
.lab-hero .crumb a { color: #e3a868; }
.lab-num {
  display: inline-block;
  font-family: var(--mono);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 1px;
  background: var(--accent, var(--teal));
  color: #fff;
  padding: 4px 12px;
  border-radius: 4px;
  margin-bottom: 10px;
}
.lab-hero h1 { margin: 0 0 12px; font-size: 1.75rem; letter-spacing: -0.4px; }
.lab-chips { display: flex; flex-wrap: wrap; gap: 8px; }
.lab-chip {
  font-family: var(--mono);
  font-size: 0.76rem;
  background: rgba(255,255,255,0.09);
  border: 1px solid rgba(227,168,104,0.32);
  border-radius: 5px;
  padding: 5px 11px;
  color: #f1eee3;
}
.lab-chip b { color: #e3a868; font-weight: 700; }

/* ---- layout ---- */
.lab-layout {
  max-width: 1080px;
  margin: 0 auto;
  padding: 34px 24px 60px;
  display: grid;
  grid-template-columns: 216px minmax(0, 1fr);
  gap: 34px;
  align-items: start;
}
@media (max-width: 900px) {
  .lab-layout { grid-template-columns: minmax(0, 1fr); gap: 20px; }
  .lab-toc { position: static !important; max-height: none !important; }
}

.lab-toc {
  position: sticky;
  top: 84px;
  max-height: calc(100vh - 110px);
  overflow-y: auto;
  font-size: 0.87rem;
  border-left: 2px solid var(--border);
  padding-left: 14px;
}
.lab-toc h4 {
  font-family: var(--mono);
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--muted);
  margin: 0 0 10px;
}
.lab-toc a {
  display: block;
  padding: 5px 0;
  color: var(--muted);
  border-left: 2px solid transparent;
  margin-left: -16px;
  padding-left: 14px;
}
.lab-toc a:hover { color: var(--teal); text-decoration: none; }
.lab-toc a.active {
  color: var(--accent, var(--teal));
  border-left-color: var(--accent, var(--teal));
  font-weight: 600;
}

.lab-body > section { margin-bottom: 40px; scroll-margin-top: 84px; }
.lab-body h2 {
  font-size: 1.25rem;
  color: var(--navy);
  margin: 0 0 6px;
  padding-bottom: 7px;
  border-bottom: 2px solid var(--accent-soft, rgba(163,93,38,0.15));
  display: flex;
  align-items: center;
  gap: 9px;
}
.lab-body h2 .h-num {
  font-family: var(--mono);
  font-size: 0.8rem;
  background: var(--accent, var(--teal));
  color: #fff;
  border-radius: 4px;
  padding: 2px 8px;
  flex-shrink: 0;
}
.lab-body h3 { font-size: 1.02rem; color: var(--navy); margin: 22px 0 8px; }
.lab-body p { margin: 0 0 12px; }
.lab-body ul, .lab-body ol { margin: 0 0 12px; padding-left: 22px; }
.lab-body li { margin-bottom: 5px; }

.lab-lead { color: var(--muted); margin-bottom: 16px !important; }

/* ---- objective / task checklists ---- */
.check-list { list-style: none; padding-left: 0; }
.check-list li {
  position: relative;
  padding: 9px 12px 9px 40px;
  border: 1px solid var(--border);
  border-left: 3px solid var(--accent, var(--teal));
  border-radius: 6px;
  margin-bottom: 8px;
  background: #fff;
  cursor: pointer;
  transition: background 0.15s ease;
}
.check-list li:hover { background: var(--accent-soft, rgba(163,93,38,0.07)); }
.check-list li::before {
  content: "";
  position: absolute;
  left: 13px; top: 50%;
  transform: translateY(-50%);
  width: 16px; height: 16px;
  border: 2px solid var(--accent, var(--teal));
  border-radius: 4px;
}
.check-list li.done { background: var(--accent-soft, rgba(163,93,38,0.10)); }
.check-list li.done::before { background: var(--accent, var(--teal)); }
.check-list li.done::after {
  content: "";
  position: absolute;
  left: 18px; top: 50%;
  width: 4px; height: 9px;
  border: solid #fff;
  border-width: 0 2px 2px 0;
  transform: translateY(-70%) rotate(45deg);
}
.check-list li.done > span { opacity: 0.65; text-decoration: line-through; }

/* ---- materials grid ---- */
.mat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
  gap: 10px;
  padding-left: 0 !important;
  list-style: none;
}
.mat-grid li {
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 10px 12px;
  background: #fff;
  font-size: 0.88rem;
  display: flex;
  align-items: center;
  gap: 9px;
}
.mat-grid .q {
  font-family: var(--mono);
  font-weight: 700;
  color: var(--accent, var(--teal));
  background: var(--accent-soft, rgba(163,93,38,0.12));
  border-radius: 4px;
  padding: 1px 7px;
  font-size: 0.78rem;
  flex-shrink: 0;
}

/* ---- note / warning callouts ---- */
.note, .warn, .tip {
  border-radius: 8px;
  padding: 13px 16px;
  margin: 14px 0;
  font-size: 0.93rem;
  border-left: 4px solid;
}
.note { background: rgba(62,106,138,0.08);  border-color: var(--c-net); }
.warn { background: rgba(184,101,42,0.10);  border-color: var(--c-mc); }
.tip  { background: rgba(46,122,88,0.09);  border-color: var(--ok); }
/* only the first <b> is the box title; any later <b> is ordinary bold text */
.note > b:first-child, .warn > b:first-child, .tip > b:first-child { display: block; margin-bottom: 3px; font-family: var(--mono); font-size: 0.8rem; text-transform: uppercase; letter-spacing: 0.6px; }
.note > b:first-child { color: var(--c-net); } .warn > b:first-child { color: #b55a1d; } .tip > b:first-child { color: #34654c; }

/* ---- code blocks ---- */
.code-wrap { position: relative; margin: 12px 0 16px; }
.code-wrap .code-head {
  display: flex; align-items: center; justify-content: space-between;
  background: #142d20;
  color: #afd3bd;
  font-family: var(--mono);
  font-size: 0.76rem;
  padding: 7px 12px;
  border-radius: 8px 8px 0 0;
  border: 1px solid #224734;
  border-bottom: none;
}
.code-wrap pre {
  margin: 0;
  background: #092015;
  color: #e4e0d4;
  padding: 14px 16px;
  border-radius: 0 0 8px 8px;
  border: 1px solid #224734;
  overflow-x: auto;
  font-family: var(--mono);
  font-size: 0.82rem;
  line-height: 1.55;
  tab-size: 2;
}
.copy-btn {
  background: rgba(155,216,180,0.14);
  border: 1px solid rgba(155,216,180,0.35);
  color: #ccecd8;
  font-family: var(--mono);
  font-size: 0.72rem;
  padding: 3px 10px;
  border-radius: 4px;
  cursor: pointer;
}
.copy-btn:hover { background: rgba(155,216,180,0.28); }
.copy-btn.ok { background: var(--ok); color: #fff; border-color: var(--ok); }
/* aceleași butoane, pe fondul deschis al widget-urilor (altfel textul abia se vede) */
.widget .copy-btn { background: var(--card, #fffdf8); border-color: var(--accent, var(--teal)); color: var(--accent, var(--teal)); font-weight: 600; }
.widget .copy-btn:hover { background: var(--accent, var(--teal)); color: #fff; }
.widget .copy-btn:disabled { opacity: 0.45; cursor: default; }
.widget .code-head .copy-btn { background: rgba(155,216,180,0.14); border-color: rgba(155,216,180,0.35); color: #ccecd8; font-weight: 400; }
/* very small syntax tint */
.tk-c { color: #818877; font-style: italic; }
.tk-k { color: #a2ceeb; }
.tk-n { color: #f7b07a; }
.tk-s { color: #a7e6a0; }
.tk-p { color: #f4a3af; }

/* ---- tables ---- */
.lab-body table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.87rem;
  margin: 12px 0 16px;
}
.lab-body th, .lab-body td {
  border: 1px solid var(--border);
  padding: 7px 10px;
  text-align: left;
}
.lab-body th {
  background: var(--accent-soft, rgba(163,93,38,0.12));
  font-family: var(--mono);
  font-size: 0.79rem;
  color: var(--navy);
}
.lab-body td code { font-family: var(--mono); font-size: 0.85em; background: rgba(18,53,38,0.06); padding: 1px 5px; border-radius: 3px; }

/* ---- interactive widget shell ---- */
.widget {
  border: 1px solid var(--border);
  border-top: 3px solid var(--accent, var(--teal));
  border-radius: 8px;
  background: #fff;
  padding: 16px 18px;
  margin: 14px 0 18px;
  box-shadow: var(--shadow);
}
.widget .w-title {
  font-family: var(--mono);
  font-size: 0.76rem;
  text-transform: uppercase;
  letter-spacing: 0.8px;
  color: var(--accent, var(--teal));
  margin-bottom: 12px;
  display: flex; align-items: center; gap: 7px;
}
.widget .w-title::before { content: "▸"; }
.w-row { display: flex; flex-wrap: wrap; gap: 14px; align-items: center; margin-bottom: 12px; }
.w-field { display: flex; flex-direction: column; gap: 3px; font-size: 0.82rem; }
.w-field label { font-family: var(--mono); font-size: 0.72rem; color: var(--muted); text-transform: uppercase; letter-spacing: 0.5px; }
.w-field select, .w-field input[type="number"], .w-field input[type="text"] {
  font-family: var(--mono);
  font-size: 0.88rem;
  padding: 5px 8px;
  border: 1px solid var(--border);
  border-radius: 5px;
  background: #fff;
  color: var(--ink);
  min-width: 108px;
}
.w-field input[type="range"] { width: 190px; accent-color: var(--accent, var(--teal)); }
.w-out {
  font-family: var(--mono);
  background: #092015;
  color: #b5e5c7;
  border-radius: 7px;
  padding: 11px 14px;
  font-size: 0.86rem;
  line-height: 1.7;
  overflow-x: auto;
}
.w-out .k { color: #818877; }
.w-out .v { color: #ffd08a; font-weight: 700; }
.w-note { font-size: 0.8rem; color: var(--muted); margin-top: 9px; }

/* ---- register bit widget ---- */
.reg { margin-bottom: 16px; }
.reg-name { font-family: var(--mono); font-weight: 700; font-size: 0.85rem; color: var(--navy); margin-bottom: 5px; }
.reg-bits { display: flex; gap: 4px; flex-wrap: wrap; }
.reg-bit {
  width: 62px;
  border: 1px solid var(--border);
  border-radius: 5px;
  text-align: center;
  cursor: pointer;
  user-select: none;
  background: #fff;
  transition: background 0.12s ease, border-color 0.12s ease;
  overflow: hidden;
}
.reg-bit .bn { font-family: var(--mono); font-size: 0.6rem; color: var(--muted); background: rgba(18,53,38,0.05); display: block; padding: 1px 0; }
.reg-bit .bl { font-family: var(--mono); font-size: 0.62rem; color: var(--navy); display: block; padding: 2px 1px; line-height: 1.15; min-height: 26px; }
.reg-bit .bv { font-family: var(--mono); font-size: 1rem; font-weight: 700; display: block; padding: 2px 0 4px; }
.reg-bit.on { background: var(--accent, var(--teal)); border-color: var(--accent, var(--teal)); }
.reg-bit.on .bn, .reg-bit.on .bl, .reg-bit.on .bv { color: #fff; }
.reg-bit.on .bn { background: rgba(0,0,0,0.14); }
.reg-bit.ro { cursor: not-allowed; opacity: 0.75; }

/* ---- pin / LED visuals ---- */
.pin-row { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 12px; }
.pin-cell {
  width: 62px; text-align: center;
  border: 1px solid var(--border); border-radius: 6px; padding: 7px 2px;
  font-family: var(--mono); font-size: 0.68rem;
}
.pin-cell .dot {
  width: 15px; height: 15px; border-radius: 50%;
  margin: 0 auto 5px; background: #deddd7;
  border: 1px solid #c3c0b7;
}
.pin-cell.hi .dot { background: #ffd45e; border-color: #e0ad2a; box-shadow: 0 0 9px 2px rgba(255,200,70,0.65); }
.pin-cell .st { color: var(--muted); }

/* ---- quiz ---- */
.quiz-q { border: 1px solid var(--border); border-radius: 8px; padding: 14px 16px; margin-bottom: 12px; background: #fff; }
.quiz-q .qt { font-weight: 600; margin-bottom: 9px; }
.quiz-opt {
  display: block; padding: 7px 12px; border: 1px solid var(--border);
  border-radius: 6px; margin-bottom: 6px; cursor: pointer; font-size: 0.9rem;
  transition: background 0.12s ease;
}
.quiz-opt:hover { background: rgba(18,53,38,0.04); }
.quiz-opt.correct { background: rgba(46,122,88,0.16); border-color: var(--ok); font-weight: 600; }
.quiz-opt.wrong { background: rgba(214,92,66,0.14); border-color: #c85a3e; }
.quiz-fb { font-size: 0.86rem; margin-top: 8px; padding: 9px 12px; border-radius: 6px; display: none; }
.quiz-fb.show { display: block; }
.quiz-fb.ok { background: rgba(46,122,88,0.12); color: #34654c; }
.quiz-fb.no { background: rgba(214,92,66,0.12); color: #9c3f28; }

/* ---- quiz notat (trimis la catalog) ---- */
button.quiz-opt { width: 100%; text-align: left; font: inherit; font-size: 0.9rem; color: inherit; background: #fff; line-height: 1.45; }
button.quiz-opt:disabled { cursor: default; }
.quiz-opt.sel { border-color: var(--teal); background: var(--teal-light); box-shadow: inset 3px 0 0 var(--teal); }
.quiz-opt.sel.wrong { background: rgba(214,92,66,0.14); border-color: #c85a3e; box-shadow: inset 3px 0 0 #c85a3e; }
.quiz-opt.sel.correct { background: rgba(46,122,88,0.16); border-color: var(--ok); box-shadow: inset 3px 0 0 var(--ok); }
.quiz-submit { border: 1px solid var(--teal); border-radius: 10px; padding: 16px 18px; margin-top: 16px; background: var(--card, #fffdf8); }
.quiz-submit .qs-title { font-weight: 700; color: var(--navy); margin-bottom: 6px; }
.quiz-submit .qs-intro, .quiz-submit .qs-acord, .quiz-submit .qs-note { font-size: 0.86rem; color: var(--muted); margin: 0 0 12px; }
.quiz-submit .qs-acord a { color: var(--teal); }
.quiz-submit .qs-cod { display: flex; flex-wrap: wrap; gap: 6px 12px; align-items: center; margin-bottom: 6px; font-size: 0.9rem; font-weight: 600; }
.quiz-submit .qs-cod input {
  font-family: var(--mono); font-size: 1rem; letter-spacing: 1px; text-transform: uppercase;
  padding: 7px 10px; border: 1px solid var(--border); border-radius: 6px; width: 12em; max-width: 100%;
}
.quiz-submit .qs-cine { font-size: 0.85rem; min-height: 1.3em; margin-bottom: 8px; }
.quiz-submit .qs-cine.ok { color: var(--ok); }
.quiz-submit .qs-cine.err, .quiz-submit .qs-msg.err { color: #9c3f28; }
.quiz-submit .qs-btn, .quiz-submit .qs-alt {
  font: inherit; font-weight: 600; padding: 8px 22px; border-radius: 8px; cursor: pointer;
  border: 1px solid var(--teal); background: var(--teal); color: #fff;
}
.quiz-submit .qs-btn:disabled { opacity: 0.55; cursor: default; }
.quiz-submit .qs-alt { background: transparent; color: var(--teal); font-weight: 500; font-size: 0.82rem; padding: 4px 12px; margin-top: 12px; }
.quiz-submit .qs-msg { font-size: 0.86rem; margin-top: 8px; min-height: 1.2em; }
.quiz-submit .qs-msg.ok { color: var(--muted); }
.quiz-submit.done { border-color: var(--ok); }
.quiz-submit .qs-res { display: flex; gap: 18px; align-items: center; flex-wrap: wrap; font-size: 0.92rem; }
.quiz-submit .qs-res small { color: var(--muted); }
.quiz-submit .qs-nota { background: var(--navy); color: #fff; border-radius: 10px; padding: 8px 18px; text-align: center; }
.quiz-submit .qs-nota span { display: block; font-size: 0.72rem; opacity: 0.8; text-transform: uppercase; letter-spacing: 0.6px; }
.quiz-submit .qs-nota b { font-size: 1.7rem; font-family: var(--mono); color: #f0c08f; }
@media print { .quiz-submit .qs-cod, .quiz-submit .qs-btn, .quiz-submit .qs-alt, .quiz-submit .qs-acord, .quiz-submit .qs-cine, .quiz-submit .qs-msg { display: none; } }

/* ---- schematic figure ---- */
.fig { margin: 14px 0 18px; }
.fig svg { width: 100%; height: auto; background: #fbfdfe; border: 1px solid var(--border); border-radius: 8px; }
.fig img {
  width: 100%; height: auto; display: block;
  background: #fff; border: 1px solid var(--border);
  border-radius: 8px; padding: 10px;
}
.fig figcaption { font-size: 0.82rem; color: var(--muted); margin-top: 7px; font-family: var(--mono); }
.fig figcaption .src {
  display: inline-block; margin-left: 6px; padding: 1px 7px;
  border: 1px solid var(--border); border-radius: 3px;
  font-size: 0.92em; color: var(--accent, var(--teal));
}
/* figuri înguste, de tip registru */
.fig.reg-fig img { padding: 6px 10px; }
.fig-narrow { max-width: 620px; margin-left: auto; margin-right: auto; }

/* ---- prev/next nav ---- */
.lab-nav { display: flex; justify-content: space-between; gap: 14px; flex-wrap: wrap; border-top: 2px solid var(--border); padding-top: 20px; }
.lab-nav a {
  font-family: var(--mono); font-size: 0.85rem;
  border: 1px solid var(--border); border-radius: 7px;
  padding: 10px 16px; color: var(--navy); background: #fff;
}
.lab-nav a:hover { border-color: var(--teal); text-decoration: none; color: var(--teal); }
.lab-nav .spacer { flex: 1; }

/* ============================================================
   Widgets for the programming labs
   ============================================================ */

/* ---- code tracer ---- */
.trace-grid { display: grid; grid-template-columns: 1.35fr 1fr; gap: 14px; }
@media (max-width: 760px) { .trace-grid { grid-template-columns: 1fr; } }

.trace-code {
  margin: 0;
  background: #092015;
  border: 1px solid #224734;
  border-radius: 8px;
  padding: 12px 10px;
  font-family: var(--mono);
  font-size: 0.8rem;
  line-height: 1.65;
  color: #e4e0d4;
  overflow-x: auto;
}
.trace-code .tl { font: inherit; display: block; padding: 1px 6px; border-radius: 4px; white-space: pre; }
.trace-code .tl.on { background: rgba(255,186,100,0.42); box-shadow: inset 4px 0 0 #ffbe6b, 0 0 0 1px rgba(255,190,107,0.35); color: #fff6e6; }
.trace-code .tl.on .ln { color: #ffd08a; font-weight: 700; }
.trace-code .tl.err { background: rgba(226,90,60,0.32); box-shadow: inset 4px 0 0 #ff7a5c, 0 0 0 1px rgba(255,122,92,0.4); }
.trace-code .ln { color: #566976; margin-right: 12px; user-select: none; }

.var-tab { width: 100%; border-collapse: collapse; font-size: 0.84rem; }
.var-tab th {
  background: var(--accent-soft, rgba(163,93,38,0.12));
  font-family: var(--mono); font-size: 0.72rem;
  padding: 5px 8px; border: 1px solid var(--border); text-align: left;
}
.var-tab td { padding: 5px 8px; border: 1px solid var(--border); font-family: var(--mono); }
.var-tab td.chg { background: rgba(255,196,110,0.28); font-weight: 700; }

.trace-out { margin-top: 12px; }
.trace-out .oh {
  font-family: var(--mono); font-size: 0.7rem; text-transform: uppercase;
  letter-spacing: 0.8px; color: var(--muted); margin-bottom: 4px;
}
.trace-out pre {
  margin: 0; background: #092015; color: #acecc6;
  border: 1px solid #224734; border-radius: 7px;
  padding: 9px 12px; font-family: var(--mono); font-size: 0.82rem;
  min-height: 44px; white-space: pre-wrap;
}

/* ---- array cells ---- */
.arr { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 12px; }
.arr-cell {
  min-width: 74px; text-align: center;
  border: 1px solid var(--border); border-radius: 6px;
  background: #fff; overflow: hidden;
}
.arr-cell .ai { display: block; font-family: var(--mono); font-size: 0.66rem; color: var(--muted); background: rgba(18,53,38,0.05); padding: 2px 0; }
.arr-cell .av { display: block; font-family: var(--mono); font-size: 1.02rem; font-weight: 700; color: var(--navy); padding: 6px 0 3px; }
.arr-cell .aa { display: block; font-family: var(--mono); font-size: 0.6rem; color: var(--muted); padding-bottom: 4px; }
.arr-cell.sel { border-color: var(--accent, var(--teal)); box-shadow: 0 0 0 2px var(--accent-soft, rgba(163,93,38,0.3)); }
.arr-cell.sel .av { color: var(--accent, var(--teal)); }

/* ---- memory cells ---- */
.mem { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 12px; }
.mem-cell {
  min-width: 108px; border: 1px solid var(--border); border-radius: 7px;
  background: #fff; overflow: hidden; text-align: center;
}
.mem-cell .ma { display: block; font-family: var(--mono); font-size: 0.62rem; color: var(--muted); background: rgba(18,53,38,0.05); padding: 2px 0; }
.mem-cell .mv { display: block; font-family: var(--mono); font-size: 0.98rem; font-weight: 700; color: var(--navy); padding: 7px 4px 3px; }
.mem-cell .mn { display: block; font-family: var(--mono); font-size: 0.68rem; color: var(--muted); padding-bottom: 5px; }
.mem-cell.sel { border-color: var(--accent, var(--teal)); box-shadow: 0 0 0 2px var(--accent-soft, rgba(163,93,38,0.3)); }
.mem-cell.ptr { border-color: var(--c-mc); border-style: dashed; }
.mem-cell.ptr .mv { color: var(--c-mc); font-size: 0.82rem; }

/* ---- struct byte layout ---- */
.bytes { display: flex; flex-wrap: wrap; gap: 3px; margin-bottom: 12px; }
.byte {
  width: 40px; border: 1px solid var(--border); border-radius: 4px;
  text-align: center; background: var(--accent-soft, rgba(163,93,38,0.10)); overflow: hidden;
}
.byte .bo { display: block; font-family: var(--mono); font-size: 0.58rem; color: var(--muted); background: rgba(18,53,38,0.05); }
.byte .bl { display: block; font-family: var(--mono); font-size: 0.68rem; font-weight: 700; color: var(--navy); padding: 4px 0; }
.byte.pad { background: repeating-linear-gradient(45deg, #f0f0f0 0 5px, #e6e5e2 5px 10px); }
.byte.pad .bl { color: #9ea397; font-weight: 400; }

/* ---- mask builder ---- */
.mask-rows { margin-bottom: 12px; }
.mask-rows .reg { margin-bottom: 10px; }
.reg-bit.chg {
  animation: bit-flash 0.9s ease;
  box-shadow: 0 0 0 2px var(--c-mc);
}
@keyframes bit-flash {
  0%, 100% { box-shadow: 0 0 0 2px var(--c-mc); }
  50%      { box-shadow: 0 0 12px 3px rgba(184,101,42,0.8); }
}

/* ---- Arduino pinout explorer ---- */
.pin-legend { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 12px; }
.pin-tag {
  font-family: var(--mono); font-size: 0.7rem; color: var(--muted);
  display: inline-flex; align-items: center; gap: 5px;
}
.pin-tag i { width: 10px; height: 10px; border-radius: 2px; display: inline-block; }

.pinout { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 12px; }
.pin-chip {
  min-width: 62px; text-align: center; cursor: pointer;
  border: 1px solid var(--border); border-top: 3px solid var(--muted);
  border-radius: 5px; background: #fff; padding: 5px 4px 6px;
  transition: transform 0.12s ease, box-shadow 0.12s ease;
}
.pin-chip:hover { transform: translateY(-2px); box-shadow: var(--shadow); }
.pin-chip .pn { display: block; font-family: var(--mono); font-weight: 700; font-size: 0.86rem; color: var(--navy); }
.pin-chip .pa { display: block; font-family: var(--mono); font-size: 0.62rem; color: var(--muted); }
.pin-chip.sel { background: var(--accent-soft, rgba(163,93,38,0.12)); box-shadow: 0 0 0 2px var(--accent, var(--teal)); }

/* ---- lab index cards on courses page ---- */
.lab-open {
  display: inline-block;
  font-family: var(--mono);
  font-size: 0.72rem;
  border: 1px solid var(--accent, var(--teal));
  color: var(--accent, var(--teal));
  border-radius: 4px;
  padding: 1px 8px;
  margin-left: 6px;
  white-space: nowrap;
}
.lab-open:hover { background: var(--accent, var(--teal)); color: #fff; text-decoration: none; }

/* =========================================================
   Componente adăugate pentru laboratoarele de Sisteme Încorporate
   ========================================================= */

/* --- Pași de lucru numerotați ------------------------------------- */
.step-list { list-style: none; padding-left: 0; counter-reset: st; margin: 14px 0 18px; }
.step-list > li {
  counter-increment: st;
  position: relative;
  padding: 2px 0 14px 44px;
  margin-bottom: 0;
  border-left: 2px solid var(--border);
  margin-left: 14px;
}
.step-list > li:last-child { border-left-color: transparent; padding-bottom: 0; }
.step-list > li::before {
  content: counter(st);
  position: absolute; left: -15px; top: 0;
  width: 28px; height: 28px; border-radius: 50%;
  background: var(--accent, var(--teal)); color: #fff;
  font-family: var(--mono); font-size: 0.8rem; font-weight: 700;
  display: flex; align-items: center; justify-content: center;
  box-shadow: 0 0 0 4px #fff;
}
.step-list > li > b:first-child { display: block; color: var(--navy); margin-bottom: 4px; }
.step-list .code-wrap { margin-top: 8px; }

/* --- Bloc de terminal (comenzi shell) ----------------------------- */
.code-wrap.sh .code-head { background: #0b2016; }
.code-wrap.sh .code-head span::before { content: "$ "; color: #a0dfba; }
.code-wrap.py .code-head span::before { content: "▸ "; color: #f4a3af; }
.code-wrap.py .code-head { background: #051b10; }
.code-wrap.py pre { background: #04150c; }
.code-wrap.sh pre { background: #091911; }

/* --- Fișă de componentă / specificații ---------------------------- */
.spec-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(190px, 1fr)); gap: 10px; margin: 12px 0 18px; }
.spec-card {
  border: 1px solid var(--border); border-left: 3px solid var(--accent, var(--teal));
  border-radius: 7px; padding: 10px 13px; background: #fff;
}
.spec-card .sc-k { font-family: var(--mono); font-size: 0.68rem; text-transform: uppercase; letter-spacing: 0.6px; color: var(--muted); }
.spec-card .sc-v { font-size: 0.95rem; font-weight: 600; color: var(--navy); margin-top: 2px; }
.spec-card .sc-n { font-size: 0.78rem; color: var(--muted); margin-top: 3px; }

/* --- Stări de consum (bare proporționale) ------------------------- */
.pstate { display: flex; align-items: center; gap: 10px; margin-bottom: 7px; font-size: 0.84rem; }
.pstate .ps-name { font-family: var(--mono); width: 130px; flex: none; color: var(--navy); }
.pstate .ps-bar { flex: 1; height: 20px; background: rgba(18,53,38,0.06); border-radius: 4px; overflow: hidden; }
.pstate .ps-fill { height: 100%; background: linear-gradient(90deg, var(--accent, var(--teal)), #9ad0b0); }
.pstate .ps-val { font-family: var(--mono); width: 96px; flex: none; text-align: right; font-weight: 700; color: var(--navy); }

/* --- Diagramă de planificare (Gantt) ------------------------------ */
.gantt-legend { display: flex; flex-wrap: wrap; gap: 12px; margin: 10px 0; font-size: 0.8rem; font-family: var(--mono); }
.gantt-legend span { display: flex; align-items: center; gap: 5px; }
.gantt-legend i { width: 13px; height: 13px; border-radius: 3px; display: inline-block; }
.gantt-wrap { overflow-x: auto; background: #123526; border-radius: 8px; padding: 12px; }
.gantt-wrap svg { display: block; min-width: 560px; }
.sched-tasks { width: 100%; border-collapse: collapse; font-size: 0.84rem; margin-bottom: 12px; }
.sched-tasks th { background: rgba(18,53,38,0.06); font-family: var(--mono); font-size: 0.72rem; text-transform: uppercase; letter-spacing: 0.5px; padding: 6px 8px; text-align: left; }
.sched-tasks td { padding: 5px 8px; border-bottom: 1px solid var(--border); font-family: var(--mono); }
.sched-tasks input[type="range"] { width: 120px; accent-color: var(--accent, var(--teal)); vertical-align: middle; }
.verdict { font-family: var(--mono); font-size: 0.86rem; padding: 9px 13px; border-radius: 6px; margin-top: 10px; font-weight: 700; }
.verdict.ok  { background: rgba(46,122,88,0.14); color: #34654c; }
.verdict.no  { background: rgba(214,92,66,0.14); color: #9c3f28; }

/* --- Potrivirea topicurilor MQTT ---------------------------------- */
.topic-row { display: flex; flex-wrap: wrap; align-items: center; gap: 9px; padding: 7px 10px; border: 1px solid var(--border); border-radius: 6px; margin-bottom: 7px; background: #fff; }
.topic-row.hit { border-color: var(--ok); background: rgba(46,122,88,0.08); }
.topic-row.miss { opacity: 0.62; }
.topic-row .tr-sub { font-family: var(--mono); font-size: 0.88rem; flex: 1; color: var(--navy); }
.topic-row .tr-flag { font-family: var(--mono); font-size: 0.72rem; padding: 2px 8px; border-radius: 3px; font-weight: 700; }
.topic-row.hit .tr-flag  { background: var(--ok); color: #fff; }
.topic-row.miss .tr-flag { background: rgba(18,53,38,0.10); color: var(--muted); }
.topic-row .tr-why { font-size: 0.78rem; color: var(--muted); flex-basis: 100%; font-family: var(--mono); }
.lvl-row { display: flex; gap: 5px; flex-wrap: wrap; margin: 4px 0 2px; }
.lvl { font-family: var(--mono); font-size: 0.76rem; padding: 2px 8px; border-radius: 3px; border: 1px solid var(--border); background: #fff; }
.lvl.eq { background: rgba(46,122,88,0.16); border-color: var(--ok); }
.lvl.wc { background: rgba(184,101,42,0.16); border-color: var(--c-mc); }
.lvl.bad { background: rgba(214,92,66,0.16); border-color: #c85a3e; }

/* --- Benzi SIMD --------------------------------------------------- */
.lanes { display: flex; flex-wrap: wrap; gap: 3px; margin: 8px 0; }
.byte-lane {
  width: 30px; text-align: center; font-family: var(--mono); font-size: 0.7rem;
  border: 1px solid var(--border); border-radius: 3px; padding: 3px 0; background: #fff;
  transition: background 0.15s, border-color 0.15s;
}
.byte-lane.done { background: rgba(46,122,88,0.16); border-color: var(--ok); }
.byte-lane.act  { background: #ffd45e; border-color: #e0ad2a; font-weight: 700; }
.lane-cap { font-family: var(--mono); font-size: 0.72rem; color: var(--muted); text-transform: uppercase; letter-spacing: 0.5px; margin-top: 10px; }

/* --- Listă de achiziții ------------------------------------------- */
.buy-table { width: 100%; border-collapse: collapse; font-size: 0.87rem; }
.buy-table th { background: rgba(18,53,38,0.06); text-align: left; padding: 7px 9px; font-family: var(--mono); font-size: 0.72rem; text-transform: uppercase; letter-spacing: 0.5px; }
.buy-table td { padding: 7px 9px; border-bottom: 1px solid var(--border); vertical-align: top; }
.buy-table .need { font-family: var(--mono); font-size: 0.72rem; padding: 2px 7px; border-radius: 3px; white-space: nowrap; }
.buy-table .need.must { background: rgba(214,92,66,0.14); color: #9c3f28; }
.buy-table .need.opt  { background: rgba(18,53,38,0.08); color: var(--muted); }

/* =====================================================================
   Caseta de cod interactivă (codelab.js + cengine.js)
   ===================================================================== */
.cod-lab {
  border: 1px solid #224734;
  border-radius: 8px;
  overflow: hidden;
  background: #092015;
}

/* ---- bara de comenzi ---- */
.cod-bar {
  display: flex; align-items: center; gap: 7px; flex-wrap: wrap;
  background: #142d20;
  padding: 7px 12px;
  border-bottom: 1px solid #224734;
}
.cod-fis { font-family: var(--mono); font-size: 0.76rem; color: #afd3bd; }
.cod-sp { flex: 1 1 auto; }
.cod-b {
  background: rgba(155,216,180,0.14);
  border: 1px solid rgba(155,216,180,0.35);
  color: #ccecd8;
  font-family: var(--mono);
  font-size: 0.72rem;
  padding: 4px 11px;
  border-radius: 4px;
  cursor: pointer;
  white-space: nowrap;
}
.cod-b:hover { background: rgba(155,216,180,0.3); }
.cod-b.ok { background: var(--ok); color: #fff; border-color: var(--ok); }
.cod-b-run { background: var(--teal); border-color: var(--teal); color: #fff; font-weight: 700; }
.cod-b-run:hover { background: #8a4b1d; }

/* ---- mărire pe tot ecranul (butonul „mărește”) ---- */
.cod-lab.cod-max {
  position: fixed; inset: 12px; z-index: 1000;
  display: flex; flex-direction: column;
  box-shadow: 0 0 0 100vmax rgba(4,14,8,0.72), 0 12px 40px rgba(0,0,0,0.5);
}
.cod-max .cod-bar, .cod-max .cod-pasbar, .cod-max .cod-intrare { flex: 0 0 auto; }
.cod-max .cod-corp { flex: 1 1 auto; min-height: 180px; align-items: stretch; }
.cod-max .cod-scroll, .cod-max .cod-gutter { height: auto !important; }
.cod-max .cod-pas, .cod-max .cod-stare { max-height: none; }
.cod-max .cod-rez, .cod-max .cod-mesaje { flex: 0 1 auto; max-height: 28vh; overflow: auto; }
html.cod-max-on, html.cod-max-on body { overflow: hidden; }
@media (max-width: 720px) { .cod-lab.cod-max { inset: 0; border-radius: 0; } }
@media print { .cod-b-max { display: none; } }

/* ---- corpul: editor + panou de stare ---- */
.cod-corp { display: flex; align-items: flex-start; }
.cod-ed { display: flex; flex: 1 1 auto; min-width: 0; align-items: stretch; }

.cod-gutter {
  flex: 0 0 auto;
  padding: 12px 8px 12px 12px;
  margin: 0;
  font-family: var(--mono);
  font-size: 0.82rem;
  line-height: 1.55;
  color: #536674;
  background: #071b11;
  text-align: right;
  white-space: pre;
  overflow: hidden;
  user-select: none;
  border-right: 1px solid #1b3729;
  min-width: 2.4em;
}

.cod-scroll { position: relative; flex: 1 1 auto; min-width: 0; }
/* banda care marchează o linie direct în editor (eroare) */
.cod-linie {
  position: absolute; left: 0; right: 0; top: 0; z-index: 0; pointer-events: none;
  background: rgba(240,176,96,0.30); box-shadow: inset 4px 0 0 #ffbe6b;
}
.cod-linie.err { background: rgba(226,90,60,0.30); box-shadow: inset 4px 0 0 #ff7a5c; }
.cod-hl, .cod-ta { z-index: 1; }

.cod-hl, .cod-ta {
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  margin: 0;
  padding: 12px 14px;
  border: 0;
  font-family: var(--mono);
  font-size: 0.82rem;
  line-height: 1.55;
  tab-size: 4;
  white-space: pre;
  word-wrap: normal;
  overflow: auto;
}
.cod-hl { color: #e4e0d4; pointer-events: none; overflow: hidden; background: transparent; }
.cod-ta {
  background: transparent;
  color: transparent;
  caret-color: #ffd08a;
  resize: none;
  outline: none;
  display: block;
}
.cod-ta::selection { background: rgba(155,216,180,0.28); }

/* ---- vizualizarea „pas cu pas” ---- */
.cod-pas {
  flex: 1.4 1 0;
  min-width: 0;
  margin: 0;
  padding: 12px 14px;
  background: #092015;
  color: #e4e0d4;
  font-family: var(--mono);
  font-size: 0.82rem;
  line-height: 1.55;
  white-space: pre;
  overflow: auto;
  max-height: 420px;
}
.cod-pas .tl { font: inherit; display: block; padding: 1px 6px; border-radius: 4px; white-space: pre; }
.cod-pas .tl.on { background: rgba(255,186,100,0.42); box-shadow: inset 4px 0 0 #ffbe6b, 0 0 0 1px rgba(255,190,107,0.35); color: #fff6e6; }
.cod-pas .tl.on .ln { color: #ffd08a; font-weight: 700; }
.cod-pas .tl.err { background: rgba(226,90,60,0.32); box-shadow: inset 4px 0 0 #ff7a5c, 0 0 0 1px rgba(255,122,92,0.4); }
.cod-pas .ln { display: inline-block; min-width: 2.2em; color: #566976; margin-right: 12px; user-select: none; text-align: right; }

/* ---- panoul de variabile / memorie ---- */
.cod-stare {
  flex: 1 1 0;
  min-width: 0;
  background: #071b11;
  border-left: 1px solid #1b3729;
  padding: 10px 12px;
  overflow: auto;
  max-height: 420px;
}
.cod-cadru { margin-bottom: 12px; }
.cod-cadru-t {
  font-family: var(--mono); font-size: 0.7rem; text-transform: uppercase; letter-spacing: 0.6px;
  color: #7f94a2; margin-bottom: 5px;
}
.cod-cadru.activ .cod-cadru-t { color: #ffd08a; }
.cod-nimic { font-family: var(--mono); font-size: 0.76rem; color: #566976; }
.cod-vars { width: 100%; border-collapse: collapse; font-family: var(--mono); font-size: 0.75rem; }
.cod-vars td { padding: 3px 6px; border-bottom: 1px solid #162d21; vertical-align: top; }
.cod-vars td.n { color: #b5e5c7; font-weight: 700; }
.cod-vars td.t { color: #7f94a2; }
.cod-vars td.v { color: #ffd08a; word-break: break-all; }
.cod-vars td.v.nein { color: #e2856a; font-style: italic; }
.cod-vars td.a { color: #536674; text-align: right; white-space: nowrap; }

/* ---- bara modului pas cu pas ---- */
.cod-pasbar {
  display: flex; align-items: center; gap: 7px; flex-wrap: wrap;
  background: #142d20; padding: 7px 12px; border-top: 1px solid #224734;
}
.cod-info { font-family: var(--mono); font-size: 0.72rem; color: #afd3bd; }

/* ---- date de intrare ---- */
.cod-intrare { background: #0d2a1c; padding: 9px 12px; border-top: 1px solid #224734; }
.cod-intrare label {
  display: block; font-family: var(--mono); font-size: 0.7rem; text-transform: uppercase;
  letter-spacing: 0.6px; color: #afd3bd; margin-bottom: 5px;
}
.cod-intrare label span { text-transform: none; letter-spacing: 0; color: #7f94a2; }
.cod-intrare textarea {
  width: 100%; min-height: 46px; resize: vertical;
  background: #071b11; color: #e4e0d4; border: 1px solid #224734; border-radius: 5px;
  font-family: var(--mono); font-size: 0.8rem; padding: 7px 9px; outline: none;
}

/* ---- rezultate ---- */
.cod-rez { display: grid; grid-template-columns: 1fr 1fr; gap: 1px; background: #224734; border-top: 1px solid #224734; }
.cod-rez .cod-col:only-child { grid-column: 1 / -1; }
.cod-col { background: #092015; min-width: 0; }
.cod-h {
  font-family: var(--mono); font-size: 0.7rem; text-transform: uppercase; letter-spacing: 0.6px;
  color: #7f94a2; padding: 7px 12px 3px; display: flex; gap: 8px; align-items: baseline; flex-wrap: wrap;
}
.cod-h .cod-ok  { color: #7fe0a0; text-transform: none; letter-spacing: 0; }
.cod-h .cod-dif { color: #ffb26e; text-transform: none; letter-spacing: 0; }
.cod-consola {
  margin: 0; padding: 4px 12px 12px;
  background: transparent; color: #e4e0d4;
  font-family: var(--mono); font-size: 0.8rem; line-height: 1.55;
  white-space: pre-wrap; word-break: break-word;
  min-height: 44px; max-height: 260px; overflow: auto;
}
.cod-ref { color: #aeb5a4; }
.cod-gol { color: #566976; font-style: italic; }

/* ---- mesaje de eroare și avertismente ---- */
.cod-mesaje:empty { display: none; }
.cod-mesaje { border-top: 1px solid #224734; }
.cod-eroare, .cod-avert {
  font-family: var(--mono); font-size: 0.78rem; line-height: 1.5;
  padding: 9px 12px; border-left: 3px solid;
}
.cod-eroare { background: rgba(224,90,60,0.14); color: #ffb9a4; border-left-color: #e05a3c; }
.cod-avert  { background: rgba(224,160,57,0.12); color: #ffd8a4; border-left-color: #e0a039; }
.cod-eroare b, .cod-avert b {
  display: block; font-size: 0.7rem; text-transform: uppercase; letter-spacing: 0.6px; margin-bottom: 2px;
}
.cod-info-l { font-family: var(--mono); font-size: 0.72rem; color: #7f94a2; padding: 6px 12px; }

@media (max-width: 760px) {
  .cod-corp { flex-direction: column; }
  .cod-stare { border-left: 0; border-top: 1px solid #1b3729; max-height: 260px; }
  .cod-rez { grid-template-columns: 1fr; }
}

.cod-lab [hidden] { display: none !important; }

/* =====================================================================
   Montajul interactiv de la Microcontrolere (mcplaca.js)
   ===================================================================== */
.mc-lab { border: 1px solid #224734; border-radius: 8px; overflow: hidden; background: #092015; }
.mc-viteza {
  font-family: var(--mono); font-size: 0.72rem; color: #afd3bd;
  display: inline-flex; align-items: center; gap: 5px;
}
.mc-viteza select {
  font-family: var(--mono); font-size: 0.72rem; padding: 3px 5px;
  background: #071b11; color: #ccecd8; border: 1px solid rgba(155,216,180,0.35); border-radius: 4px;
}

.mc-corp { display: flex; align-items: flex-start; }
.mc-ed { flex: 1.45 1 0; min-width: 0; }
.mc-pasview { max-height: none; overflow: auto; cursor: default; }
.mc-montaj {
  flex: 1 1 0; min-width: 0;
  background: #071b11; border-left: 1px solid #1b3729;
  padding: 10px 12px; overflow: auto;
}

/* ---- strip-ul de pini ---- */
.mc-placa {
  background: linear-gradient(180deg, #2b5842 0%, #234936 100%);
  border: 1px solid #407457; border-radius: 6px;
  padding: 7px 8px; margin-bottom: 10px;
}
.mc-rand { display: flex; align-items: center; gap: 3px; flex-wrap: wrap; margin-bottom: 4px; }
.mc-rand:last-child { margin-bottom: 0; }
.mc-rand-t {
  font-family: var(--mono); font-size: 0.6rem; text-transform: uppercase; letter-spacing: 0.5px;
  color: #92d4ad; width: 52px; flex: 0 0 auto;
}
.mc-pad {
  --n: 0;
  font-family: var(--mono); font-size: 0.62rem;
  min-width: 19px; text-align: center;
  padding: 2px 2px; border-radius: 3px;
  background: rgba(0,0,0,0.32);
  color: #9fc1ac;
  border: 1px solid rgba(255,255,255,0.10);
  transition: background 0.08s linear, color 0.08s linear;
}
.mc-pad.pwm { border-bottom: 2px solid rgba(255,196,110,0.55); }
.mc-pad.folosit { color: #f4f0e3; border-color: rgba(255,255,255,0.35); }
.mc-pad.sus, .mc-pad[style*="--n"] {
  background: rgba(255, 196, 110, calc(var(--n) * 0.85));
}
.mc-pad.sus { color: #2a1c05; font-weight: 700; }
.mc-ceas {
  margin-left: auto; font-family: var(--mono); font-size: 0.66rem;
  color: #cdf0db; background: rgba(0,0,0,0.3); padding: 2px 7px; border-radius: 3px;
}

/* ---- cardurile componentelor ---- */
.mc-componente { display: flex; flex-direction: column; gap: 9px; }
.mc-card {
  background: #0b291b; border: 1px solid #1b3729; border-radius: 6px;
  padding: 9px 11px;
  display: grid; grid-template-columns: auto 1fr; gap: 4px 11px; align-items: center;
}
.mc-et { font-family: var(--mono); font-size: 0.72rem; color: #e4e0d4; }
.mc-et b { display: block; font-size: 0.76rem; color: #b5e5c7; }
.mc-et span { font-size: 0.66rem; color: #7f94a2; }
.mc-val { grid-column: 1 / -1; font-family: var(--mono); font-size: 0.7rem; color: #ffd08a; }
.mc-val b { color: #ffd08a; }
.mc-mic { color: #7f94a2; font-size: 0.66rem; }

/* LED */
.mc-led {
  --i: 0; --c: #ff5f4a;
  width: 30px; height: 30px; border-radius: 50%;
  background: #263a2f;
  border: 2px solid #385244;
  position: relative;
  transition: box-shadow 0.05s linear, background 0.05s linear;
}
.mc-led.aprins {
  background: var(--c);
  border-color: var(--c);
  opacity: calc(0.5 + 0.5 * var(--i));
  box-shadow: 0 0 calc(5px + 18px * var(--i)) calc(1px + 5px * var(--i)) var(--c),
              inset 0 0 6px rgba(255,255,255,calc(0.15 + 0.45 * var(--i)));
}

/* bară de LED-uri */
.mc-c-bara { grid-template-columns: 1fr; }
.mc-c-bara .mc-val { text-align: center; }

/* butonul de soluție + nota lui */
.cod-b-sol { background: rgba(255,196,110,0.14); border-color: rgba(255,196,110,0.45); color: #ffd8a4; }
.cod-b-sol:hover { background: rgba(255,196,110,0.3); }
.cod-nota {
  font-family: var(--mono); font-size: 0.78rem; line-height: 1.5;
  padding: 9px 12px; border-left: 3px solid #9bd8b4;
  background: rgba(155,216,180,0.12); color: #ccecd8;
}
.cod-nota b { color: #fff; }
.mc-bara { display: flex; gap: 12px; flex-wrap: wrap; justify-content: center; padding: 4px 0 2px; }
.mc-bara-el { display: flex; flex-direction: column; align-items: center; gap: 4px; }
.mc-bara-el i {
  font-style: normal; font-family: var(--mono); font-size: 0.6rem; color: #7f94a2;
}
.mc-bara .mc-led { width: 26px; height: 26px; }

/* buton */
.mc-buton {
  font-family: var(--mono); font-size: 0.68rem; letter-spacing: 0.5px;
  width: 62px; height: 34px; border-radius: 5px;
  background: #294235; color: #e4e0d4;
  border: 1px solid #466755; border-bottom-width: 3px;
  cursor: pointer; user-select: none;
}
.mc-buton.apasat { background: #4e8c69; color: #fff; border-color: #539571; border-bottom-width: 1px; transform: translateY(2px); }

/* potențiometru / senzor */
.mc-c-pot input[type="range"] { grid-column: 1 / -1; width: 100%; accent-color: var(--teal); }
.mc-c-pot .mc-et { grid-column: 1 / -1; }

/* monitor serial */
.mc-c-serial { grid-template-columns: 1fr; }
.mc-monitor {
  margin: 0; background: #06120c; border: 1px solid #1b3729; border-radius: 4px;
  color: #b5e5c7; font-family: var(--mono); font-size: 0.72rem; line-height: 1.5;
  padding: 7px 9px; height: 118px; overflow: auto; white-space: pre-wrap; word-break: break-word;
}
.mc-trimite { display: flex; gap: 5px; }
.mc-trimite input {
  flex: 1 1 auto; min-width: 0;
  background: #071b11; color: #e4e0d4; border: 1px solid #224734; border-radius: 4px;
  font-family: var(--mono); font-size: 0.72rem; padding: 4px 7px; outline: none;
}

/* undă PWM și osciloscop */
.mc-c-pwm, .mc-c-osc { grid-template-columns: 1fr; }
.mc-unda svg, .mc-osc svg { width: 100%; height: auto; display: block; }
.mc-unda svg { height: 54px; }
.mc-unda .unda, .mc-osc .unda { fill: none; stroke: #ffc46e; stroke-width: 2; vector-effect: non-scaling-stroke; }
.mc-unda .ax, .mc-osc .ax { stroke: #284535; stroke-width: 1; vector-effect: non-scaling-stroke; }
.mc-unda .ax2 { stroke: #1e382a; stroke-width: 1; stroke-dasharray: 3 3; vector-effect: non-scaling-stroke; }
.mc-unda .et, .mc-osc .et { font: 8px var(--mono, monospace); fill: #7f94a2; }
.mc-osc { background: #06120c; border: 1px solid #1b3729; border-radius: 4px; padding: 4px 6px; }

/* afișaj */
.mc-lcd {
  grid-column: 1 / -1;
  background: #193929; color: #a8f0c8; border: 1px solid #2c5f46; border-radius: 4px;
  font-family: var(--mono); font-size: 0.85rem; letter-spacing: 1px;
  padding: 9px 11px; min-height: 42px; white-space: pre;
}

/* ---- bara de stare ---- */
.mc-status {
  display: flex; gap: 16px; flex-wrap: wrap;
  background: #0d2a1c; border-top: 1px solid #224734;
  padding: 6px 12px;
  font-family: var(--mono); font-size: 0.7rem; color: #7f94a2;
}
.mc-status b { color: #b5e5c7; }

/* ---- panoul de regiștri ---- */
.mc-reg { background: #071b11; border-top: 1px solid #224734; padding: 9px 12px; }
.mc-reg:empty { display: none; }
.mc-reg-t {
  font-family: var(--mono); font-size: 0.66rem; text-transform: uppercase; letter-spacing: 0.6px;
  color: #7f94a2; margin-bottom: 7px;
}
.mc-reg-r { margin-bottom: 9px; }
.mc-reg-n { font-family: var(--mono); font-size: 0.74rem; color: #b5e5c7; font-weight: 700; margin-bottom: 4px; }
.mc-reg-n span { color: #7f94a2; font-weight: 400; font-size: 0.68rem; margin-left: 6px; }
.mc-biti { display: flex; gap: 4px; flex-wrap: wrap; }
.mc-bit {
  flex: 1 1 60px; min-width: 52px; max-width: 96px;
  background: #0b291b; border: 1px solid #224734; border-radius: 4px;
  text-align: center; cursor: pointer; user-select: none;
  overflow: hidden; transition: background 0.12s ease, border-color 0.12s ease;
}
.mc-bit i { display: block; font-style: normal; font-family: var(--mono); font-size: 0.55rem; color: #536674; background: #072014; }
.mc-bit em { display: block; font-style: normal; font-family: var(--mono); font-size: 1rem; font-weight: 700; color: #7f94a2; padding: 1px 0; }
.mc-bit u { display: block; text-decoration: none; font-family: var(--mono); font-size: 0.55rem; color: #7f94a2; padding: 0 2px 3px; line-height: 1.25; }
.mc-bit.unu { background: rgba(255,196,110,0.14); border-color: #d99a4e; }
.mc-bit.unu em { color: #ffc46e; }
.mc-bit.gol { opacity: 0.35; cursor: default; }
.mc-bit.schimbat { background: rgba(155,216,180,0.28); border-color: var(--teal); }
.mc-bit:not(.gol):hover { border-color: #9bd8b4; }

@media (max-width: 900px) {
  .mc-corp { flex-direction: column; }
  .mc-montaj { border-left: 0; border-top: 1px solid #1b3729; width: 100%; }
  .mc-ed { width: 100%; }
}

/* Telefon: tabelele late se derulează orizontal în loc să lărgească pagina
   (altfel Safari pe iPhone micșorează pagina și mărește textul). */
@media (max-width: 720px) {
  .lab-body table { display: block; overflow-x: auto; -webkit-overflow-scrolling: touch; }
  .lab-body { min-width: 0; }
}

/* Telefoane înguste: antetul blocurilor de cod, câmpurile widgeturilor și
   tabelele de achiziții se adaptează la ecran. */
.code-wrap .code-head { gap: 8px; }
.code-wrap .code-head span { min-width: 0; overflow-wrap: anywhere; }
.copy-btn { flex-shrink: 0; }
.w-field { min-width: 0; max-width: 100%; }
.w-field select, .w-field input[type="number"], .w-field input[type="text"] { max-width: 100%; }
@media (max-width: 720px) {
  .buy-table, .sched-tasks { display: block; overflow-x: auto; -webkit-overflow-scrolling: touch; }
  .lab-layout { padding-left: 16px; padding-right: 16px; }
}

/* =====================================================================
   Aliniere pe ambele margini (justified) pentru textul de curs/laborator.
   Se aplica doar in corpul lectiei, cu despartire in silabe pentru romana
   (paginile au lang="ro"), ca sa nu apara spatii mari intre cuvinte.
   ===================================================================== */
.lab-body p,
.lab-body li,
.lab-body figcaption,
.lab-body .rl-key,
.lab-body .rl-recap,
.lab-body .rd-b,
.lab-lead {
  text-align: justify;
  text-justify: inter-word;
  -webkit-hyphens: auto;
  hyphens: auto;
  hyphenate-limit-chars: 7 3 3;   /* nu desparte cuvinte scurte */
  overflow-wrap: break-word;
}

/* Exceptii: elemente unde alinierea pe ambele margini strica lizibilitatea */
.lab-body table p,
.lab-body table li,
.lab-body th,
.lab-body td,
.lab-body pre,
.lab-body pre *,
.lab-body .code-wrap,
.lab-body .code-wrap *,
.lab-body .widget,
.lab-body .widget p,
.lab-body .widget li,
.lab-body .viz,
.lab-body .viz p,
.lab-body .viz li,
.lab-body .viz-note,
.lab-body .viz-out,
.lab-body .w-note,
.lab-body .verdict,
.lab-body summary,
.lab-body .netsim,
.lab-body .netsim p,
.lab-body .netsim li {
  text-align: left;
  -webkit-hyphens: manual;
  hyphens: manual;
}

/* Codul inline nu se desparte niciodata in silabe */
.lab-body code,
.lab-body kbd,
.lab-body samp { -webkit-hyphens: manual; hyphens: manual; }

/* Comutatorul de limbă din antetul paginilor de curs și de laborator. */
.lab-chips .lang-chip {
  border-color: rgba(255, 255, 255, 0.4);
  letter-spacing: 0.2px;
}
.lab-chips .lang-chip b { letter-spacing: 0.6px; }