/* EvoDefend — FortiGate 7.6 exam prep */
:root {
  --bg: #0c1117;
  --bg-2: #111820;
  --bg-3: #18212c;
  --panel: #141c26;
  --border: #26313f;
  --border-2: #34445a;
  --text: #e8edf3;
  --text-dim: #9aa8b8;
  --text-faint: #6b7a8c;
  --accent: #ee3124;
  --accent-soft: rgba(238, 49, 36, 0.12);
  --green: #2fbf71;
  --green-soft: rgba(47, 191, 113, 0.13);
  --amber: #e8a13c;
  --amber-soft: rgba(232, 161, 60, 0.13);
  --blue: #4da3ff;
  --blue-soft: rgba(77, 163, 255, 0.12);
  --radius: 12px;
  --mono: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  background: var(--bg);
  color: var(--text);
  font-family: "Segoe UI", system-ui, -apple-system, Roboto, "Helvetica Neue", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* ---------- Top bar ---------- */
.topbar {
  display: flex; align-items: center; justify-content: space-between; gap: 16px;
  padding: 12px 24px;
  background: linear-gradient(180deg, #131b25, #0f151d);
  border-bottom: 1px solid var(--border);
  position: sticky; top: 0; z-index: 50;
  flex-wrap: wrap;
}
.brand { display: flex; align-items: center; gap: 12px; }
.brand-logo svg { display: block; }
.brand-text { display: flex; flex-direction: column; line-height: 1.25; }
.brand-name { font-weight: 700; font-size: 1.15rem; letter-spacing: 0.02em; }
.brand-sub { font-size: 0.72rem; color: var(--text-dim); letter-spacing: 0.03em; }
.mainnav { display: flex; gap: 4px; flex-wrap: wrap; }
.mainnav a {
  color: var(--text-dim); text-decoration: none; font-weight: 600; font-size: 0.92rem;
  padding: 8px 14px; border-radius: 8px; transition: background 0.15s, color 0.15s;
}
.mainnav a:hover { color: var(--text); background: var(--bg-3); }
.mainnav a.active { color: #fff; background: var(--accent); }

/* ---------- Layout ---------- */
.app { flex: 1; width: 100%; max-width: 1240px; margin: 0 auto; padding: 28px 24px 64px; }
.footer {
  border-top: 1px solid var(--border); padding: 18px 24px; text-align: center;
  color: var(--text-faint); font-size: 0.78rem; display: flex; flex-direction: column; gap: 4px;
}

h1.page-title { font-size: 1.6rem; margin-bottom: 4px; }
p.page-sub { color: var(--text-dim); margin-bottom: 24px; }

.grid { display: grid; gap: 16px; }
.grid.cols-3 { grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); }
.grid.cols-2 { grid-template-columns: repeat(auto-fit, minmax(340px, 1fr)); }

.card {
  background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius);
  padding: 20px;
}
.card h3 { font-size: 1.05rem; margin-bottom: 10px; }
.card .big { font-size: 2rem; font-weight: 700; }
.muted { color: var(--text-dim); }
.faint { color: var(--text-faint); font-size: 0.85rem; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 8px; cursor: pointer;
  background: var(--bg-3); color: var(--text); border: 1px solid var(--border-2);
  padding: 9px 18px; border-radius: 9px; font-size: 0.92rem; font-weight: 600;
  transition: background 0.15s, border-color 0.15s; text-decoration: none;
}
.btn:hover { background: #1e2937; border-color: #46586f; }
.btn.primary { background: var(--accent); border-color: var(--accent); color: #fff; }
.btn.primary:hover { background: #d42a1e; }
.btn.ghost { background: transparent; }
.btn.small { padding: 5px 12px; font-size: 0.82rem; }
.btn:disabled { opacity: 0.45; cursor: not-allowed; }
.btn-row { display: flex; gap: 10px; flex-wrap: wrap; align-items: center; }

/* ---------- Pills / badges ---------- */
.pill {
  display: inline-block; padding: 2px 10px; border-radius: 999px; font-size: 0.72rem;
  font-weight: 700; letter-spacing: 0.04em; text-transform: uppercase;
  background: var(--bg-3); color: var(--text-dim); border: 1px solid var(--border);
}
.pill.easy { color: var(--green); background: var(--green-soft); border-color: transparent; }
.pill.medium { color: var(--amber); background: var(--amber-soft); border-color: transparent; }
.pill.hard { color: var(--accent); background: var(--accent-soft); border-color: transparent; }
.pill.expert { color: #fff; background: var(--accent); border-color: transparent; font-weight: 700; }
.pill.qr { color: var(--text-faint); background: var(--bg-3); border-color: transparent; font-variant-numeric: tabular-nums; }
.rdelta { display: inline-block; margin-left: 8px; font-size: .78rem; font-weight: 700; padding: 2px 9px; border-radius: 999px; font-variant-numeric: tabular-nums; }
.rdelta.up { background: var(--green-soft); color: var(--green); }
.rdelta.down { background: var(--accent-soft); color: #ff8a7d; }
.pill.domain { color: var(--blue); background: var(--blue-soft); border-color: transparent; text-transform: none; letter-spacing: 0; }

/* ---------- Progress bars ---------- */
.bar { height: 8px; background: var(--bg-3); border-radius: 999px; overflow: hidden; }
.bar > span { display: block; height: 100%; background: var(--accent); border-radius: 999px; transition: width 0.4s; }
.bar.green > span { background: var(--green); }

/* ---------- Dashboard ---------- */
.exam-facts { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: 12px; }
.fact { background: var(--bg-2); border: 1px solid var(--border); border-radius: 10px; padding: 14px; text-align: center; }
.fact .v { font-size: 1.25rem; font-weight: 700; }
.fact .k { font-size: 0.75rem; color: var(--text-dim); text-transform: uppercase; letter-spacing: 0.05em; }
.domain-card { display: flex; flex-direction: column; gap: 10px; }
.domain-card .stats-line { display: flex; justify-content: space-between; font-size: 0.85rem; color: var(--text-dim); }

/* ---------- Study ---------- */
.study-layout { display: grid; grid-template-columns: 300px 1fr; gap: 24px; align-items: start; }
.study-side {
  position: sticky; top: 84px; max-height: calc(100vh - 108px); overflow-y: auto;
  background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius); padding: 14px;
}
.study-side .dom { font-size: 0.72rem; text-transform: uppercase; letter-spacing: 0.06em; color: var(--text-faint); margin: 14px 6px 6px; }
.study-side .dom:first-child { margin-top: 0; }
.study-side .cluster { margin-bottom: 2px; }
.study-side .cluster-title {
  width: 100%; text-align: left; background: none; border: none; color: var(--text);
  font: inherit; font-weight: 600; font-size: 0.9rem; padding: 7px 8px; border-radius: 7px; cursor: pointer;
  display: flex; justify-content: space-between; align-items: center; gap: 8px;
}
.study-side .cluster-title:hover { background: var(--bg-3); }
.study-side .mods { margin-left: 8px; border-left: 1px solid var(--border); padding-left: 8px; display: none; }
.study-side .cluster.open .mods { display: block; }
.study-side .mod-link {
  display: flex; align-items: center; gap: 7px; padding: 5px 8px; border-radius: 6px;
  color: var(--text-dim); text-decoration: none; font-size: 0.86rem;
}
.study-side .mod-link:hover { background: var(--bg-3); color: var(--text); }
.study-side .mod-link.active { background: var(--accent-soft); color: #ff8f87; }
.mod-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--border-2); flex-shrink: 0; }
.mod-dot.done { background: var(--green); }

.study-content { min-width: 0; }
.module-body h4 { margin: 22px 0 8px; font-size: 1.02rem; color: #ffb3ad; }
.module-body p { margin-bottom: 10px; }
.module-body ul, .module-body ol { margin: 0 0 12px 22px; }
.module-body li { margin-bottom: 4px; }
.module-body table { border-collapse: collapse; width: 100%; margin: 10px 0 16px; font-size: 0.9rem; display: block; overflow-x: auto; }
.module-body th, .module-body td { border: 1px solid var(--border-2); padding: 7px 10px; text-align: left; vertical-align: top; }
.module-body th { background: var(--bg-3); }
.module-body code, .qtext code, .explain code {
  font-family: var(--mono); font-size: 0.85em; background: var(--bg-3);
  border: 1px solid var(--border); border-radius: 5px; padding: 1px 5px; color: #ffd2ce;
}
.module-body pre { margin: 10px 0 16px; }
pre.cli {
  background: #0a0f14; border: 1px solid var(--border); border-radius: 9px; padding: 14px;
  font-family: var(--mono); font-size: 0.84rem; overflow-x: auto; color: #c9e3c9; position: relative;
  white-space: pre; line-height: 1.5;
}
.cli-block { position: relative; margin: 10px 0 16px; }
.cli-block .copy {
  position: absolute; top: 8px; right: 8px; font-size: 0.72rem; padding: 3px 10px;
}
.cli-desc { font-size: 0.85rem; color: var(--text-dim); margin-bottom: 4px; }
.tips {
  background: var(--amber-soft); border: 1px solid rgba(232,161,60,0.35); border-radius: 10px;
  padding: 16px 18px; margin-top: 24px;
}
.tips h4 { color: var(--amber); margin-bottom: 8px; font-size: 0.95rem; }
.tips ul { margin-left: 20px; }
.tips li { margin-bottom: 6px; font-size: 0.92rem; }
.module-nav { display: flex; justify-content: space-between; gap: 10px; margin-top: 28px; flex-wrap: wrap; }
.mark-done { margin-top: 20px; }

/* ---------- Quiz ---------- */
.quiz-setup .opt-group { margin-bottom: 18px; }
.quiz-setup label.head { display: block; font-weight: 700; margin-bottom: 8px; }
.choice-row { display: flex; flex-wrap: wrap; gap: 8px; }
.choice {
  cursor: pointer; padding: 7px 14px; border-radius: 8px; border: 1px solid var(--border-2);
  background: var(--bg-3); font-size: 0.88rem; color: var(--text-dim); user-select: none;
}
.choice.sel { background: var(--accent-soft); border-color: var(--accent); color: #ff9d96; font-weight: 600; }

.qcard { max-width: 860px; margin: 0 auto; }
.qmeta { display: flex; align-items: center; gap: 10px; margin-bottom: 14px; flex-wrap: wrap; }
.qtext { font-size: 1.05rem; margin-bottom: 18px; white-space: pre-wrap; }
.opts { display: flex; flex-direction: column; gap: 10px; margin-bottom: 18px; }
.optbtn {
  text-align: left; cursor: pointer; background: var(--bg-2); border: 1px solid var(--border-2);
  color: var(--text); border-radius: 10px; padding: 12px 16px; font: inherit; font-size: 0.95rem;
  display: flex; gap: 12px; align-items: flex-start; transition: border-color 0.12s, background 0.12s;
}
.optbtn:hover:not(:disabled) { border-color: var(--blue); background: var(--bg-3); }
.optbtn .letter {
  font-weight: 700; color: var(--text-dim); background: var(--bg-3); border-radius: 6px;
  min-width: 26px; height: 26px; display: inline-flex; align-items: center; justify-content: center; font-size: 0.82rem;
  flex-shrink: 0; margin-top: 1px;
}
.optbtn.picked { border-color: var(--blue); background: var(--blue-soft); }
.optbtn.correct { border-color: var(--green); background: var(--green-soft); }
.optbtn.correct .letter { background: var(--green); color: #08130c; }
.optbtn.wrong { border-color: var(--accent); background: var(--accent-soft); }
.optbtn.wrong .letter { background: var(--accent); color: #fff; }
.optbtn:disabled { cursor: default; opacity: 0.9; }
.explain {
  background: var(--bg-2); border-left: 3px solid var(--blue); border-radius: 0 10px 10px 0;
  padding: 14px 16px; font-size: 0.92rem; margin-bottom: 18px; white-space: pre-wrap;
}
.explain .verdict { font-weight: 700; display: block; margin-bottom: 6px; }
.verdict.ok { color: var(--green); }
.verdict.no { color: var(--accent); }
.quiz-top { display: flex; align-items: center; justify-content: space-between; gap: 14px; margin-bottom: 16px; flex-wrap: wrap; }
.quiz-top .bar { flex: 1; min-width: 160px; }

/* ---------- Exam ---------- */
.exam-header {
  display: flex; align-items: center; justify-content: space-between; gap: 14px;
  margin-bottom: 18px; flex-wrap: wrap;
}
.timer { font-family: var(--mono); font-size: 1.3rem; font-weight: 700; padding: 6px 14px; border-radius: 9px; background: var(--bg-2); border: 1px solid var(--border-2); }
.timer.low { color: var(--accent); border-color: var(--accent); animation: pulse 1.2s infinite; }
@keyframes pulse { 50% { opacity: 0.55; } }
.qnav { display: flex; flex-wrap: wrap; gap: 6px; margin: 18px 0; }
.qnav button {
  width: 36px; height: 32px; border-radius: 7px; border: 1px solid var(--border-2);
  background: var(--bg-2); color: var(--text-dim); cursor: pointer; font-size: 0.8rem; font-weight: 600;
}
.qnav button.answered { background: var(--blue-soft); border-color: var(--blue); color: var(--blue); }
.qnav button.flagged { border-color: var(--amber); color: var(--amber); }
.qnav button.current { outline: 2px solid var(--accent); }
.result-score { font-size: 3rem; font-weight: 800; }
.result-score.pass { color: var(--green); }
.result-score.fail { color: var(--accent); }
.domain-break { margin-top: 16px; }
.domain-break .row { display: grid; grid-template-columns: 1fr 90px 130px; gap: 12px; align-items: center; padding: 8px 0; border-bottom: 1px solid var(--border); font-size: 0.9rem; }

/* ---------- Flashcards ---------- */
.deck-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: 14px; }
.flash-stage { max-width: 700px; margin: 0 auto; text-align: center; }
.flashcard {
  perspective: 1200px; cursor: pointer; margin: 20px auto; height: 320px; max-width: 640px;
}
.flashcard .inner {
  position: relative; width: 100%; height: 100%; transition: transform 0.5s; transform-style: preserve-3d;
}
.flashcard.flipped .inner { transform: rotateY(180deg); }
.flashcard .face {
  position: absolute; inset: 0; backface-visibility: hidden; border-radius: 16px;
  display: flex; align-items: center; justify-content: center; padding: 30px;
  border: 1px solid var(--border-2); font-size: 1.12rem; overflow-y: auto;
}
.flashcard .front { background: linear-gradient(160deg, #17202b, #121a23); }
.flashcard .back { background: linear-gradient(160deg, #1b2431, #141d28); transform: rotateY(180deg); color: #d7f5e3; }
.flash-actions { display: flex; justify-content: center; gap: 12px; margin-top: 10px; }

/* ---------- Scenario labs ---------- */
.lab-brief {
  background: linear-gradient(160deg, #16202b, #121a23);
  border: 1px solid var(--border-2); border-left: 3px solid var(--accent);
  border-radius: 0 12px 12px 0; padding: 18px 20px;
}
.exhibit-label {
  display: inline-flex; align-items: center; gap: 6px; font-size: 0.72rem;
  text-transform: uppercase; letter-spacing: 0.07em; font-weight: 700;
  color: var(--amber); margin-bottom: 6px;
}
.exhibit-label::before { content: "▤"; font-size: 0.85rem; }
.step-dots { display: flex; gap: 6px; align-items: center; }
.step-dots i {
  width: 9px; height: 9px; border-radius: 50%; background: var(--border-2); display: block;
}
.step-dots i.done { background: var(--green); }
.step-dots i.miss { background: var(--accent); }
.step-dots i.now { background: var(--blue); box-shadow: 0 0 0 3px var(--blue-soft); }

/* ---------- Weak areas ---------- */
.weak-list { display: flex; flex-direction: column; gap: 10px; }
.weak-row {
  display: grid; grid-template-columns: 1fr 74px 110px auto; gap: 12px; align-items: center;
  padding: 10px 12px; border: 1px solid var(--border); border-radius: 9px; background: var(--bg-2);
  font-size: 0.9rem;
}
.weak-row .acc { font-weight: 700; text-align: right; }
.weak-row .acc.bad { color: var(--accent); }
.weak-row .acc.mid { color: var(--amber); }
.weak-row .acc.good { color: var(--green); }
@media (max-width: 640px) {
  .weak-row { grid-template-columns: 1fr auto; }
  .weak-row .bar { display: none; }
}

/* ---------- Misc ---------- */
.empty-state { text-align: center; padding: 60px 20px; color: var(--text-dim); }
.center { text-align: center; }
.mt { margin-top: 18px; }
.mb { margin-bottom: 18px; }
hr.sep { border: none; border-top: 1px solid var(--border); margin: 22px 0; }
.review-item { border: 1px solid var(--border); border-radius: 10px; padding: 16px; margin-bottom: 14px; background: var(--panel); }
.search-box {
  width: 100%; padding: 10px 14px; border-radius: 9px; border: 1px solid var(--border-2);
  background: var(--bg-2); color: var(--text); font: inherit; margin-bottom: 12px;
}
.search-box:focus { outline: none; border-color: var(--blue); }

@media (max-width: 900px) {
  .study-layout { grid-template-columns: 1fr; }
  .study-side { position: static; max-height: none; }
  .app { padding: 20px 14px 48px; }
  .topbar { padding: 10px 14px; }
}

/* ================= Ox Alpha ================= */
.ox-head {
  display: flex; gap: 20px; justify-content: space-between; align-items: center; flex-wrap: wrap;
  background: linear-gradient(135deg, #141c26, #101821);
  border: 1px solid var(--border); border-radius: var(--radius);
  padding: 16px 20px; margin-bottom: 16px;
}
.ox-id { display: flex; align-items: center; gap: 13px; }
.ox-avatar {
  width: 46px; height: 46px; border-radius: 11px; display: grid; place-items: center;
  background: var(--accent-soft); border: 1px solid rgba(238,49,36,.35); flex: none;
}
.ox-name { font-weight: 700; font-size: 1.12rem; letter-spacing: .01em; }
.ox-role { font-size: .78rem; color: var(--text-dim); }
.ox-rating { min-width: 236px; }
.ox-tier {
  display: inline-block; font-size: .7rem; font-weight: 700; letter-spacing: .06em;
  padding: 3px 9px; border-radius: 999px; text-transform: uppercase;
}
.ox-tier.t1 { background: rgba(154,168,184,.15); color: #9aa8b8; }
.ox-tier.t2 { background: var(--blue-soft); color: var(--blue); }
.ox-tier.t3 { background: var(--green-soft); color: var(--green); }
.ox-tier.t4 { background: var(--amber-soft); color: var(--amber); }
.ox-tier.t5 { background: var(--accent-soft); color: var(--accent); }
.ox-score { font-size: 1.7rem; font-weight: 700; line-height: 1.15; font-variant-numeric: tabular-nums; }
.ox-score span { font-size: .8rem; color: var(--text-faint); font-weight: 500; }
.ox-bar { height: 5px; background: var(--bg-3); border-radius: 4px; overflow: hidden; margin: 5px 0 5px; }
.ox-bar span { display: block; height: 100%; background: linear-gradient(90deg, var(--accent), var(--amber)); }
.ox-stats { font-size: .73rem; color: var(--text-faint); font-variant-numeric: tabular-nums; }
.ox-spark { width: 100%; height: 28px; margin-top: 4px; }
.ox-spark polyline { fill: none; stroke: var(--accent); stroke-width: 1.4; vector-effect: non-scaling-stroke; }

.ox-chat { background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; }
.ox-log { max-height: 66vh; min-height: 320px; overflow-y: auto; padding: 20px; scroll-behavior: smooth; }
.ox-hint { color: var(--text-dim); max-width: 62ch; margin: 26px auto; text-align: center; }
.ox-hint h3 { color: var(--text); margin-bottom: 10px; font-size: 1.06rem; }
.ox-hint p { margin-bottom: 10px; font-size: .93rem; }
.ox-hint-cmd code { background: var(--accent-soft); color: var(--accent); padding: 2px 7px; border-radius: 5px; font-family: var(--mono); }

.ox-msg { margin-bottom: 20px; max-width: 100%; }
.ox-msg.u { margin-left: auto; max-width: 74%; }
.ox-msg.u .ox-body {
  background: var(--bg-3); border: 1px solid var(--border-2);
  border-radius: 12px 12px 3px 12px; padding: 10px 14px;
}
.ox-msg.a .ox-body {
  background: transparent; border-left: 2px solid var(--accent);
  padding: 2px 0 2px 16px;
}
.ox-tag { font-size: .64rem; letter-spacing: .14em; color: var(--accent); font-weight: 700; margin-bottom: 5px; }
.ox-body p { margin-bottom: 9px; }
.ox-body p:last-child { margin-bottom: 0; }
.ox-body code { background: var(--bg-3); padding: 1px 5px; border-radius: 4px; font-family: var(--mono); font-size: .87em; color: #ffd9a0; }
.ox-h { margin: 12px 0 6px; font-size: .96rem; color: var(--text); }
.ox-li { padding-left: 16px; position: relative; margin-bottom: 5px; }
.ox-li::before { content: "▸"; position: absolute; left: 0; color: var(--accent); }
.ox-pre {
  background: #0b1016; border: 1px solid var(--border); border-radius: 9px;
  padding: 26px 13px 12px; margin: 11px 0; overflow-x: auto; position: relative;
  font-family: var(--mono); font-size: .82rem; line-height: 1.5; color: #c9d6e4; white-space: pre;
}
.ox-pre-tag {
  position: absolute; top: 0; left: 0; font-size: .62rem; letter-spacing: .1em; text-transform: uppercase;
  background: var(--bg-3); color: var(--text-faint); padding: 2px 9px; border-radius: 9px 0 9px 0;
}
.ox-verdict { font-weight: 700; margin: 4px 0 10px; padding: 7px 12px; border-radius: 8px; font-size: .93rem; }
.ox-verdict.ok { background: var(--green-soft); color: var(--green); }
.ox-verdict.no { background: var(--accent-soft); color: #ff8a7d; }

.ox-opts { display: flex; flex-direction: column; gap: 8px; margin-top: 13px; }
.ox-opt {
  display: flex; gap: 11px; align-items: flex-start; text-align: left; width: 100%;
  background: var(--bg-2); border: 1px solid var(--border); color: var(--text);
  border-radius: 9px; padding: 11px 13px; cursor: pointer; font: inherit; font-size: .93rem;
  transition: border-color .13s, background .13s;
}
.ox-opt:hover:not(:disabled) { border-color: var(--accent); background: var(--bg-3); }
.ox-opt:disabled { cursor: default; opacity: .82; }
.ox-optl {
  flex: none; width: 23px; height: 23px; border-radius: 6px; display: grid; place-items: center;
  background: var(--bg-3); border: 1px solid var(--border-2); font-weight: 700; font-size: .78rem;
}
.ox-opt.correct { border-color: var(--green); background: var(--green-soft); opacity: 1; }
.ox-opt.correct .ox-optl { background: var(--green); border-color: var(--green); color: #06210f; }
.ox-opt.wrong { border-color: var(--accent); background: var(--accent-soft); }
.ox-opt.wrong .ox-optl { background: var(--accent); border-color: var(--accent); color: #fff; }
.ox-delta {
  align-self: flex-start; font-size: .78rem; font-weight: 700; padding: 3px 10px;
  border-radius: 999px; margin-top: 2px; font-variant-numeric: tabular-nums;
}
.ox-delta.up { background: var(--green-soft); color: var(--green); }
.ox-delta.down { background: var(--accent-soft); color: #ff8a7d; }

.ox-typing { display: flex; gap: 5px; padding: 8px 0; }
.ox-typing i { width: 7px; height: 7px; border-radius: 50%; background: var(--accent); opacity: .35; animation: oxb 1.05s infinite; }
.ox-typing i:nth-child(2) { animation-delay: .16s; }
.ox-typing i:nth-child(3) { animation-delay: .32s; }
@keyframes oxb { 0%,60%,100% { opacity: .28; transform: translateY(0); } 30% { opacity: 1; transform: translateY(-4px); } }

.ox-quick { display: flex; gap: 8px; flex-wrap: wrap; padding: 12px 20px 0; border-top: 1px solid var(--border); }
.ox-q {
  background: var(--bg-3); border: 1px solid var(--border-2); color: var(--text-dim);
  border-radius: 999px; padding: 6px 13px; font: inherit; font-size: .82rem; cursor: pointer;
  transition: color .13s, border-color .13s;
}
.ox-q:hover { color: var(--text); border-color: var(--accent); }
.ox-q-lab { border-color: rgba(238,49,36,.4); color: #ff9b90; }
.ox-topic {
  background: var(--bg-3); border: 1px solid var(--border-2); color: var(--text-dim);
  border-radius: 999px; padding: 6px 11px; font: inherit; font-size: .82rem; cursor: pointer; max-width: 230px;
}
.ox-input { display: flex; gap: 10px; padding: 12px 20px; align-items: flex-end; }
.ox-input textarea {
  flex: 1; background: var(--bg-2); border: 1px solid var(--border-2); color: var(--text);
  border-radius: 10px; padding: 11px 13px; font: inherit; font-size: .94rem; resize: none;
  line-height: 1.5; max-height: 160px;
}
.ox-input textarea:focus { outline: none; border-color: var(--accent); }
.ox-foot { display: flex; gap: 12px; align-items: center; padding: 0 20px 14px; font-size: .76rem; }
.ox-reset {
  background: none; border: 1px solid var(--border); color: var(--text-faint);
  border-radius: 7px; padding: 4px 10px; font: inherit; font-size: .76rem; cursor: pointer;
}
.ox-reset:hover { color: var(--text); border-color: var(--border-2); }

/* ---- network diagram ---- */
.ox-topo-wrap {
  background: #0b1016; border: 1px solid var(--border); border-radius: 10px;
  padding: 8px 10px 10px; margin: 12px 0; overflow-x: auto;
}
.ox-topo { display: block; min-width: 560px; }
.ox-zone { fill: rgba(255,255,255,.022); stroke: var(--border); stroke-width: 1; stroke-dasharray: 4 4; }
.ox-zone-l { fill: var(--text-faint); font-size: 10px; font-weight: 700; letter-spacing: .13em;
             font-family: "Segoe UI", system-ui, sans-serif; }
.ox-topo-t { fill: var(--text); font-size: 13px; font-weight: 700; font-family: "Segoe UI", system-ui, sans-serif; }
.ox-link { fill: none; stroke: var(--border-2); stroke-width: 1.6; }
.ox-link-l { fill: var(--text-faint); font-size: 9.5px; font-family: var(--mono); }
.ox-flow { fill: none; stroke-width: 2; opacity: .95; }
.ox-flow-l { font-size: 10px; font-weight: 600; font-family: "Segoe UI", system-ui, sans-serif; }
.ox-node-l { fill: var(--text); font-size: 11.5px; font-weight: 700; font-family: "Segoe UI", system-ui, sans-serif; }
.ox-node-t { fill: var(--text-dim); font-size: 9px; font-family: var(--mono); }
.ox-node-m { fill: var(--text-faint); font-size: 8.6px; font-family: var(--mono); }
.ox-notes { display: flex; flex-wrap: wrap; gap: 7px; margin-top: 8px; padding: 0 4px; }
.ox-notes span {
  font-size: .76rem; color: var(--amber); background: var(--amber-soft);
  border-radius: 6px; padding: 3px 9px;
}

@media (max-width: 720px) {
  .ox-head { flex-direction: column; align-items: flex-start; }
  .ox-rating { min-width: 100%; }
  .ox-msg.u { max-width: 90%; }
  .ox-log { padding: 14px; max-height: 60vh; }
  .ox-quick, .ox-input, .ox-foot { padding-left: 14px; padding-right: 14px; }
}

.mainnav a.nav-ox { color: var(--accent); }
.mainnav a.nav-ox::before { content: "◆ "; font-size: .7em; vertical-align: 1px; }
.mainnav a.nav-ox.active { color: #fff; }

/* ---- sequencing items ---- */
.ord-wrap { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin: 16px 0; }
.ord-col h4 { font-size: .78rem; letter-spacing: .08em; text-transform: uppercase; color: var(--text-faint); margin-bottom: 8px; }
.ord-pool, .ord-seq {
  min-height: 120px; background: var(--bg-2); border: 1px solid var(--border);
  border-radius: 10px; padding: 10px; display: flex; flex-direction: column; gap: 7px;
}
.ord-seq { border-style: dashed; }
.ord-item {
  display: flex; gap: 9px; align-items: flex-start; text-align: left; width: 100%;
  background: var(--bg-3); border: 1px solid var(--border-2); color: var(--text);
  border-radius: 8px; padding: 9px 11px; cursor: pointer; font: inherit; font-size: .89rem;
  transition: border-color .12s, background .12s;
}
.ord-item:hover:not(:disabled) { border-color: var(--accent); }
.ord-item:disabled { cursor: default; }
.ord-n {
  flex: none; width: 20px; height: 20px; border-radius: 5px; display: grid; place-items: center;
  background: var(--accent); color: #fff; font-weight: 700; font-size: .72rem;
}
.ord-item.ok { border-color: var(--green); background: var(--green-soft); }
.ord-item.ok .ord-n { background: var(--green); color: #06210f; }
.ord-item.bad { border-color: var(--accent); background: var(--accent-soft); }

/* ---- simulated CLI ---- */
.cli-ctx {
  background: var(--bg-2); border-left: 3px solid var(--blue); border-radius: 0 8px 8px 0;
  padding: 10px 14px; margin: 12px 0; font-size: .88rem; color: var(--text-dim);
}
.cli-goal {
  background: var(--amber-soft); border-radius: 8px; padding: 9px 13px;
  margin: 12px 0 10px; font-size: .9rem; color: var(--amber);
}
.cli-goal strong { color: var(--text); }
.cli-term {
  background: #05090d; border: 1px solid var(--border); border-radius: 10px 10px 0 0;
  padding: 12px 14px; height: 240px; overflow-y: auto;
  font-family: var(--mono); font-size: .84rem; line-height: 1.55; color: #c9d6e4;
}
.cli-line { white-space: pre-wrap; word-break: break-word; }
.cli-out { white-space: pre-wrap; color: var(--text-faint); }
.cli-out.err { color: #ff8a7d; }
.cli-out.hint { color: var(--amber); }
.cli-ps1 { color: var(--green); font-weight: 700; }
.cli-input {
  display: flex; gap: 8px; align-items: center; background: #05090d;
  border: 1px solid var(--border); border-top: none; border-radius: 0 0 10px 10px; padding: 9px 14px;
  font-family: var(--mono); font-size: .84rem;
}
.cli-input input {
  flex: 1; background: transparent; border: none; color: var(--text);
  font: inherit; outline: none;
}
.cli-input input:disabled { color: var(--text-faint); }
@media (max-width: 720px) { .ord-wrap { grid-template-columns: 1fr; } }

/* ================= figures: GUI mockups & diagrams ================= */
.fig { margin: 16px 0; }
.fig-cap {
  font-size: .8rem; color: var(--text-faint); margin-top: 7px; padding-left: 2px;
  border-left: 2px solid var(--border-2); padding: 4px 0 4px 10px;
}
.fg-win {
  border: 1px solid var(--border-2); border-radius: 10px; overflow: hidden;
  background: #0f151d; box-shadow: 0 6px 22px rgba(0,0,0,.35); font-size: .82rem;
}
.fg-bar {
  display: flex; align-items: center; gap: 10px; padding: 7px 12px;
  background: linear-gradient(180deg,#1b2531,#141c26); border-bottom: 1px solid var(--border);
}
.fg-logo { display: flex; }
.fg-host { font-weight: 700; color: var(--text); font-size: .8rem; }
.fg-crumb { color: var(--text-dim); font-size: .76rem; }
.fg-crumb i { color: var(--text-faint); font-style: normal; margin: 0 3px; }
.fg-bar-r { margin-left: auto; color: var(--text-faint); font-size: .74rem; }
.fg-body { display: flex; min-height: 190px; }
.fg-nav {
  width: 168px; flex: none; background: #0b1016; border-right: 1px solid var(--border);
  padding: 7px 0;
}
.fg-nav-i {
  display: flex; align-items: center; gap: 8px; padding: 6px 12px;
  color: var(--text-dim); font-size: .78rem;
}
.fg-nav-i.on { color: #fff; background: var(--accent); font-weight: 600; }
.fg-ico { width: 14px; height: 14px; flex: none; }
.fg-nav-c { padding: 5px 12px 5px 34px; color: var(--text-faint); font-size: .74rem; }
.fg-nav-c.on { color: var(--accent); font-weight: 600; background: rgba(238,49,36,.08); }
.fg-main { flex: 1; padding: 10px 12px; min-width: 0; }
.fg-tools { display: flex; gap: 6px; margin-bottom: 9px; flex-wrap: wrap; }
.fg-btn {
  border: 1px solid var(--border-2); border-radius: 5px; padding: 3px 9px;
  color: var(--text-dim); font-size: .74rem; background: var(--bg-3);
}
.fg-btn.pri { background: var(--accent); border-color: var(--accent); color: #fff; font-weight: 600; }
.fg-tw { overflow-x: auto; }
.fg-tbl { width: 100%; border-collapse: collapse; font-size: .76rem; }
.fg-tbl th {
  text-align: left; padding: 6px 9px; color: var(--text-faint); font-weight: 600;
  background: var(--bg-3); border-bottom: 1px solid var(--border); white-space: nowrap;
}
.fg-tbl td { padding: 6px 9px; border-bottom: 1px solid var(--border); color: var(--text-dim); white-space: nowrap; }
.fg-tbl tr.hi td { background: rgba(238,49,36,.10); color: var(--text); }
.fg-tbl tr.hi td:first-child { box-shadow: inset 3px 0 0 var(--accent); }
.fg-pill {
  display: inline-block; padding: 1px 7px; border-radius: 999px; font-size: .68rem; font-weight: 700;
}
.fg-pill.ok { background: var(--green-soft); color: var(--green); }
.fg-pill.no { background: var(--accent-soft); color: #ff8a7d; }
.fg-pill.warn { background: var(--amber-soft); color: var(--amber); }
.fg-pill.info { background: var(--blue-soft); color: var(--blue); }
.fg-form { display: flex; flex-direction: column; gap: 2px; }
.fg-row {
  display: grid; grid-template-columns: 190px 1fr; gap: 12px; align-items: center;
  padding: 6px 8px; border-bottom: 1px solid var(--border);
}
.fg-row.mark { background: rgba(238,49,36,.09); box-shadow: inset 3px 0 0 var(--accent); }
.fg-row label { color: var(--text-dim); font-size: .77rem; }
.fg-inp, .fg-sel {
  background: var(--bg-2); border: 1px solid var(--border-2); border-radius: 5px;
  padding: 3px 9px; color: var(--text); font-size: .76rem; display: inline-block; min-width: 150px;
}
.fg-sel i { float: right; color: var(--text-faint); font-style: normal; }
.fg-tog { border-radius: 999px; padding: 2px 11px; font-size: .72rem; font-weight: 700; }
.fg-tog.on { background: var(--green-soft); color: var(--green); }
.fg-tog.off { background: var(--bg-3); color: var(--text-faint); }
.fg-note {
  margin-top: 9px; font-size: .76rem; color: var(--amber);
  background: var(--amber-soft); border-radius: 6px; padding: 6px 10px;
}
@media (max-width: 620px) {
  .fg-nav { width: 46px; }
  .fg-nav-i span, .fg-nav-c { display: none; }
  .fg-row { grid-template-columns: 1fr; gap: 3px; }
}

/* ================= performance labs ================= */
.pl-card { max-width: 1000px; }
.pl-top { display: flex; align-items: center; gap: 14px; margin-bottom: 10px; flex-wrap: wrap; }
.pl-dots { display: flex; gap: 5px; flex: 1; }
.pl-dot { width: 22px; height: 5px; border-radius: 3px; background: var(--bg-3); }
.pl-dot.done { background: var(--green); }
.pl-dot.now { background: var(--accent); }
.pl-brief {
  background: var(--bg-2); border-left: 3px solid var(--blue); border-radius: 0 8px 8px 0;
  padding: 10px 14px; margin: 12px 0; font-size: .89rem; color: var(--text-dim);
}
.pl-goal {
  background: var(--amber-soft); border-radius: 8px; padding: 10px 14px;
  margin: 12px 0; font-size: .93rem; color: var(--amber);
}
.pl-goal strong { color: var(--text); }
.pill.nav-k, .pill.form-k, .pill.cli-k, .pill.decide-k {
  background: var(--bg-3); color: var(--text-dim); border-color: transparent;
  font-size: .64rem; letter-spacing: .08em;
}
.pill.cli-k { color: var(--green); background: var(--green-soft); }
.pill.nav-k { color: var(--blue); background: var(--blue-soft); }

.pl-win { margin: 12px 0; }
.pl-click { cursor: pointer; transition: background .12s, box-shadow .12s; }
.fg-nav-i.pl-click:hover, .fg-nav-c.pl-click:hover { background: rgba(238,49,36,.16); color: #fff; }
.fg-btn.pl-click:hover { border-color: var(--accent); color: var(--text); }
tr.pl-row { cursor: pointer; }
tr.pl-row:hover td { background: rgba(238,49,36,.10); }
.pl-click.hit { box-shadow: inset 0 0 0 2px var(--green); }
.pl-click.miss { box-shadow: inset 0 0 0 2px var(--accent); }
.pl-click.locked { pointer-events: none; opacity: .75; }
.pl-inp, .pl-sel {
  background: var(--bg-2); border: 1px solid var(--border-2); color: var(--text);
  border-radius: 5px; padding: 4px 9px; font: inherit; font-size: .8rem; min-width: 210px;
}
.pl-inp:focus, .pl-sel:focus { outline: none; border-color: var(--accent); }
.fg-tog.pl-click { cursor: pointer; user-select: none; }

.pl-score {
  display: inline-block; font-size: 1.5rem; font-weight: 800; letter-spacing: .06em;
  padding: 8px 26px; border-radius: 10px; margin: 10px 0;
}
.pl-score.ok { background: var(--green-soft); color: var(--green); }
.pl-score.no { background: var(--accent-soft); color: #ff8a7d; }
.pl-debrief {
  text-align: left; background: var(--bg-2); border: 1px solid var(--border);
  border-radius: 10px; padding: 16px 20px; margin: 16px auto; max-width: 780px;
  font-size: .92rem; color: var(--text-dim);
}
.pl-debrief h4 { color: var(--text); margin: 10px 0 6px; font-size: .95rem; }
.pl-debrief p { margin-bottom: 9px; }
.pl-debrief code { background: var(--bg-3); padding: 1px 5px; border-radius: 4px; font-family: var(--mono); font-size: .87em; color: #ffd9a0; }

/* ================= Review / spaced repetition ================= */
.mainnav a.nav-rv { color: var(--green); }
.mainnav a.nav-rv::before { content: "◷ "; font-size: .82em; }
.mainnav a.nav-rv.active { color: #fff; background: var(--green); }

.rv-stats { display: grid; grid-template-columns: repeat(auto-fit,minmax(140px,1fr)); gap: 12px; margin-bottom: 18px; }
.rv-tile { background: var(--panel); border: 1px solid var(--border); border-radius: var(--radius); padding: 14px 16px; }
.rv-tile .rv-v { font-size: 1.9rem; font-weight: 700; line-height: 1.1; font-variant-numeric: tabular-nums; }
.rv-tile .rv-l { font-size: .76rem; color: var(--text-dim); margin-top: 2px; }
.rv-tile.accent .rv-v { color: var(--accent); }
.rv-tile.green .rv-v { color: var(--green); }
.rv-tile.amber .rv-v { color: var(--amber); }
.rv-tile.blue .rv-v { color: var(--blue); }

.cm-legend { display: flex; flex-wrap: wrap; gap: 14px; margin: 12px 0 10px; font-size: .78rem; color: var(--text-dim); }
.cm-key { display: inline-flex; align-items: center; gap: 6px; }
.cm-key i { width: 10px; height: 10px; border-radius: 3px; display: inline-block; }
.cm-key b { color: var(--text); font-variant-numeric: tabular-nums; }
.cm-key.ok i { background: var(--green); }
.cm-key.warn i { background: var(--amber); }
.cm-key.theo i { background: var(--blue); }
.cm-key.prac i { background: #a06cd5; }
.cm-key.none i { background: var(--bg-3); border: 1px solid var(--border-2); }

.cm-grid { display: flex; flex-wrap: wrap; gap: 6px; }
.cm-cell {
  font-size: .72rem; font-family: var(--mono); padding: 3px 8px; border-radius: 5px;
  border: 1px solid transparent; cursor: default; white-space: nowrap;
}
.cm-cell.ok   { background: var(--green-soft);  color: var(--green); }
.cm-cell.warn { background: var(--amber-soft);  color: var(--amber); }
.cm-cell.theo { background: var(--blue-soft);   color: var(--blue); }
.cm-cell.prac { background: rgba(160,108,213,.15); color: #c9a3f0; }
.cm-cell.none { background: var(--bg-3); color: var(--text-faint); border-color: var(--border); }

.rv-sched {
  margin-top: 10px; padding-top: 9px; border-top: 1px solid var(--border);
  font-size: .78rem; color: var(--text-faint);
}
.rv-sched b { color: var(--text); }
.rv-selfgrade { margin: 12px 0; }
.rv-seq { margin: 10px 0 10px 22px; font-size: .9rem; color: var(--text-dim); }
.rv-seq li { margin-bottom: 5px; }
.rv-seq code { background: var(--bg-3); padding: 1px 5px; border-radius: 4px; font-family: var(--mono); font-size: .87em; color: #ffd9a0; }
.faint.sm { font-size: .82rem; }
.cm-key.done i { background: #3d5a6c; }
.cm-cell.done { background: rgba(61,90,108,.22); color: #9fc0d4; }