/* ============================================================
   wega-learn — Dark Mode UI
   ============================================================ */
:root {
  --bg:        #1a1a2e;
  --panel:     #16213e;
  --panel-2:   #1e2a4a;
  --accent:    #E8A000;   /* WeGA-Orange */
  --accent-dk: #b87e00;
  --text:      #e0e0e0;
  --text-dim:  #9aa3b2;
  --border:    #2c3a5e;
  --success:   #4CAF50;
  --error:     #f44336;
  --mono: "JetBrains Mono", "Fira Code", "Cascadia Code", Consolas, monospace;
  --sans: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}

* { box-sizing: border-box; }

/* hidden-Attribut muss display-Regeln (z. B. flex) schlagen */
[hidden] { display: none !important; }

html, body {
  margin: 0; padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--sans);
  font-size: 15px;
  min-height: 100vh;
}

kbd {
  font-family: var(--mono);
  background: var(--panel-2);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 1px 6px;
  font-size: .82em;
}

/* ----------------------------- Top bar ----------------------------- */
#topbar {
  display: flex; align-items: center; justify-content: space-between;
  padding: 12px 22px;
  background: linear-gradient(180deg, #1d2746, var(--panel));
  border-bottom: 1px solid var(--border);
  position: sticky; top: 0; z-index: 50;
}
.brand { display: flex; align-items: center; gap: 12px; cursor: pointer; }
.brand-logo { font-size: 26px; }
.brand-text { display: flex; flex-direction: column; line-height: 1.1; }
.brand-title { font-weight: 700; font-size: 20px; letter-spacing: .3px; }
.brand-sub { color: var(--text-dim); font-size: 12px; }

.stats { display: flex; align-items: center; gap: 14px; }
.stat {
  font-family: var(--mono); font-weight: 600;
  background: var(--panel-2); border: 1px solid var(--border);
  padding: 6px 12px; border-radius: 20px; font-size: 14px;
}
.stat.xp     { color: var(--accent); }
.stat.streak { color: #ff8a3d; }
.stat-icon { filter: saturate(1.2); }

/* ----------------------------- Buttons ----------------------------- */
.ghost-btn {
  background: var(--panel-2); color: var(--text);
  border: 1px solid var(--border); border-radius: 8px;
  padding: 9px 14px; font-size: 14px; cursor: pointer;
  font-family: var(--sans); transition: .15s;
}
.ghost-btn:hover { border-color: var(--accent); color: #fff; }
.ghost-btn:disabled { opacity: .4; cursor: not-allowed; }

.primary-btn {
  background: var(--accent); color: #1a1a2e; font-weight: 700;
  border: none; border-radius: 8px; padding: 10px 18px;
  font-size: 14px; cursor: pointer; transition: .15s;
}
.primary-btn:hover { background: #ffb31a; }
.primary-btn:active { transform: translateY(1px); }
.kbd-inline { font-family: var(--mono); font-size: 11px; opacity: .7; margin-left: 4px; }

.next-btn { background: var(--success); color: #08240c; border-color: var(--success); font-weight: 700; }
.next-btn:hover { background: #5fd463; color: #08240c; }

/* ----------------------------- Screens ----------------------------- */
.screen { display: none; padding: 26px 22px 60px; max-width: 1180px; margin: 0 auto; }
.screen.active { display: block; }

/* -------------------------- World select -------------------------- */
.world-grid {
  display: grid; grid-template-columns: repeat(5, 1fr); gap: 16px;
  margin-top: 8px;
}
@media (max-width: 1100px) { .world-grid { grid-template-columns: repeat(3, 1fr); } }
@media (max-width: 760px)  { .world-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 480px)  { .world-grid { grid-template-columns: 1fr; } }

.world-card {
  background: var(--panel); border: 1px solid var(--border);
  border-radius: 14px; padding: 20px 18px; display: flex; flex-direction: column;
  gap: 6px; position: relative; transition: .18s; min-height: 230px;
}
.world-card.unlocked:hover { border-color: var(--accent); transform: translateY(-3px); box-shadow: 0 8px 24px #00000040; }
.world-card.locked { opacity: .55; }
.world-icon { font-size: 38px; }
.world-name { font-size: 19px; font-weight: 700; margin: 2px 0 0; }
.world-tech { color: var(--text-dim); font-size: 13px; }
.world-count { color: var(--text-dim); font-size: 13px; margin-top: auto; }
.world-progress-bar {
  height: 7px; background: var(--panel-2); border-radius: 4px; overflow: hidden; margin: 6px 0 2px;
}
.world-progress-fill { height: 100%; background: var(--accent); width: 0%; transition: width .4s; }
.world-prog-text { font-family: var(--mono); font-size: 13px; }
.world-card .lock-icon { position: absolute; top: 16px; right: 18px; font-size: 22px; }
.world-card .done-badge { position: absolute; top: 14px; right: 16px; font-size: 22px; }
.world-actions { margin-top: 10px; display: flex; gap: 8px; align-items: center; }
.skip-link {
  font-size: 12px; color: var(--text-dim); text-decoration: underline; cursor: pointer; background: none; border: none;
}
.skip-link:hover { color: var(--accent); }

.hint-foot { color: var(--text-dim); font-size: 13px; text-align: center; margin-top: 30px; }

/* --------------------------- Challenge --------------------------- */
.challenge-bar { display: flex; align-items: center; gap: 16px; margin-bottom: 16px; }
.c-worldname { font-weight: 700; color: var(--accent); }
.c-progress { font-family: var(--mono); color: var(--text-dim); margin-left: auto; }

.task-card {
  background: var(--panel); border: 1px solid var(--border);
  border-radius: 12px; padding: 16px 18px; margin-bottom: 16px;
}
.task-card h2 { margin: 0 0 6px; font-size: 18px; }
.task-card .pin { margin-right: 4px; }
.task-card p { margin: 0; color: var(--text); line-height: 1.5; }
.world-reset-btn {
  font-size: 12px; padding: 4px 10px; color: var(--text-dim);
  border-color: var(--border); margin-top: 6px;
}
.world-reset-btn:hover { color: var(--error); border-color: var(--error); }

.xquery-context-panel {
  background: #0f1e10; border: 1px solid #2a4a2e; border-radius: 10px;
  margin-bottom: 14px; overflow: hidden;
}
.xquery-context-label {
  background: #1a3020; padding: 7px 14px; font-size: 12px; font-weight: 600;
  color: #6dbf7e; border-bottom: 1px solid #2a4a2e; letter-spacing: 0.02em;
}
.xquery-context-code {
  margin: 0; padding: 12px 14px; font-family: var(--mono); font-size: 12.5px;
  color: #9de0a8; line-height: 1.55; overflow-x: auto; white-space: pre;
}

.concept-tag {
  display: inline-block; margin-top: 10px; font-size: 12px; font-family: var(--mono);
  color: var(--accent); border: 1px solid var(--accent-dk); border-radius: 12px; padding: 2px 10px;
}

.work-area { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
@media (max-width: 820px) { .work-area { grid-template-columns: 1fr; } }

.panel { background: var(--panel); border: 1px solid var(--border); border-radius: 12px; overflow: hidden; display: flex; flex-direction: column; }
.panel-head {
  background: var(--panel-2); padding: 9px 14px; font-size: 13px; font-weight: 600;
  border-bottom: 1px solid var(--border); display: flex; justify-content: space-between;
}
.fixture-name { font-family: var(--mono); color: var(--accent); font-weight: 600; }

.xml-pre { margin: 0; overflow: auto; max-height: 460px; }
.xml-pre code { font-family: var(--mono); font-size: 12.5px; line-height: 1.5; padding: 14px; display: block; background: transparent !important; }

.editor-panel { gap: 0; }
#editor {
  font-family: var(--mono); font-size: 14px; line-height: 1.55;
  background: #0f1830; color: var(--text); border: none; resize: vertical;
  padding: 14px; min-height: 170px; width: 100%; outline: none; tab-size: 2;
  border-bottom: 1px solid var(--border);
}
#editor:focus { box-shadow: inset 0 0 0 2px var(--accent-dk); }
#editor.shake { animation: shake .4s; }

.io-row { display: grid; grid-template-columns: 1fr 1fr; gap: 0; }
.io-block { padding: 10px 14px; }
.io-block + .io-block { border-left: 1px solid var(--border); }
.io-label { font-size: 12px; color: var(--text-dim); margin-bottom: 6px; font-weight: 600; }
.io-box {
  font-family: var(--mono); font-size: 12.5px; line-height: 1.45; margin: 0;
  white-space: pre-wrap; word-break: break-word; max-height: 200px; overflow: auto;
  color: var(--text); border: 1px solid var(--border); border-radius: 8px; padding: 8px 10px;
  background: #0f1830; min-height: 38px;
}
.io-box.correct { animation: correctFlash 1s; border-color: var(--success); }
.io-box.error   { border-color: var(--error); color: #ffb4ae; }

/* --------------------------- Action bar --------------------------- */
.action-bar { display: flex; align-items: center; gap: 10px; margin-top: 16px; flex-wrap: wrap; }
.action-bar .spacer { flex: 1; }
.feedback-msg { font-weight: 700; font-size: 14px; }
.feedback-msg.ok  { color: var(--success); }
.feedback-msg.bad { color: var(--error); }

.hint-area {
  margin-top: 14px; background: var(--panel); border: 1px solid var(--accent-dk);
  border-radius: 10px; padding: 6px 4px;
}
.hint-item {
  padding: 10px 14px; border-bottom: 1px solid var(--border); font-size: 14px; line-height: 1.5;
  animation: fadeIn .3s;
}
.hint-item:last-child { border-bottom: none; }
.hint-item .hint-num { color: var(--accent); font-family: var(--mono); margin-right: 8px; font-weight: 700; }
.hint-item.solution { color: #ffd479; }
.hint-item.solution code { display: block; margin-top: 6px; white-space: pre-wrap; background: #0f1830; padding: 10px; border-radius: 8px; font-family: var(--mono); font-size: 12.5px; }
.explanation { color: var(--text-dim); font-size: 13.5px; line-height: 1.55; padding: 10px 14px; }
.explanation strong { color: var(--accent); }

/* --------------------------- Overlay --------------------------- */
.overlay {
  position: fixed; inset: 0; background: #0a0e1ccc; display: flex; align-items: center; justify-content: center;
  z-index: 100; backdrop-filter: blur(3px);
}
.overlay-card {
  background: var(--panel); border: 1px solid var(--accent); border-radius: 16px;
  padding: 36px 40px; text-align: center; max-width: 420px; animation: popIn .35s;
}
.overlay-icon { font-size: 56px; animation: bounce 1s; }
.overlay-card h2 { margin: 10px 0 8px; }
.overlay-card p { color: var(--text-dim); margin: 0 0 20px; }

/* --------------------------- XP float --------------------------- */
#xpFloatLayer { position: fixed; inset: 0; pointer-events: none; z-index: 200; }
.xp-float {
  position: absolute; font-family: var(--mono); font-weight: 800; font-size: 22px;
  color: var(--accent); text-shadow: 0 2px 8px #000; animation: xpFloat 1.1s forwards;
}

/* --------------------------- Animations --------------------------- */
@keyframes correctFlash {
  0%, 100% { border-color: var(--border); }
  50% { border-color: #4CAF50; box-shadow: 0 0 20px #4CAF5040; }
}
@keyframes shake {
  0%, 100% { transform: translateX(0); }
  20% { transform: translateX(-8px); }
  40% { transform: translateX(8px); }
  60% { transform: translateX(-5px); }
  80% { transform: translateX(5px); }
}
@keyframes xpFloat {
  0%   { opacity: 1; transform: translateY(0) scale(1); }
  100% { opacity: 0; transform: translateY(-60px) scale(1.15); }
}
@keyframes fadeIn { from { opacity: 0; transform: translateY(-4px); } to { opacity: 1; transform: none; } }
@keyframes popIn  { from { opacity: 0; transform: scale(.9); } to { opacity: 1; transform: scale(1); } }
@keyframes bounce { 0%,100%{transform:translateY(0);} 30%{transform:translateY(-12px);} 60%{transform:translateY(-4px);} }

.stat.pulse { animation: statPulse .5s; }
@keyframes statPulse { 0%{transform:scale(1);} 50%{transform:scale(1.18);} 100%{transform:scale(1);} }

/* ============================================================
   Konzept-Karten
   ============================================================ */
.concept-overlay {
  position: fixed; inset: 0; background: #0a0e1ccc;
  display: flex; align-items: center; justify-content: center;
  z-index: 80; backdrop-filter: blur(3px);
}
.concept-card-panel {
  background: var(--panel); border: 1px solid var(--accent);
  border-radius: 16px; padding: 0; max-width: 600px; width: 90%;
  animation: popIn .3s; display: flex; flex-direction: column;
  max-height: 90vh;
}
.concept-card-header {
  display: flex; align-items: center; gap: 12px;
  background: var(--panel-2); padding: 16px 20px;
  border-radius: 16px 16px 0 0; border-bottom: 1px solid var(--border);
}
.concept-card-icon { font-size: 26px; flex-shrink: 0; }
.concept-card-title { font-size: 17px; font-weight: 700; color: var(--accent); }
.concept-card-body {
  padding: 20px; overflow-y: auto; flex: 1;
}
.concept-card-pre {
  font-family: var(--mono); font-size: 13.5px; line-height: 1.7;
  margin: 0; white-space: pre-wrap; color: var(--text);
}
.concept-card-btn {
  margin: 0 20px 20px; align-self: flex-end;
}

/* ============================================================
   Multiple-Choice Panel (explain)
   ============================================================ */
.mc-panel {
  margin-top: 16px; display: flex; flex-direction: column; gap: 10px;
}
.mc-option {
  background: var(--panel); border: 1px solid var(--border);
  border-radius: 10px; padding: 14px 18px; text-align: left;
  color: var(--text); font-size: 14px; font-family: var(--sans);
  cursor: pointer; transition: .15s; display: flex; gap: 12px; align-items: flex-start;
}
.mc-option:hover:not(:disabled) { border-color: var(--accent); background: var(--panel-2); }
.mc-option:disabled { cursor: default; }
.mc-option.mc-correct { border-color: var(--success); background: #1a3d1f; color: #a8f0a8; }
.mc-option.mc-wrong   { border-color: var(--error);   background: #3d1a1a; color: #f0a8a8; }
.mc-letter {
  font-family: var(--mono); font-weight: 700; font-size: 13px;
  color: var(--accent); min-width: 18px; flex-shrink: 0; padding-top: 1px;
}

/* ============================================================
   Write-Only Panel (self-assessment)
   ============================================================ */
.wo-panel {
  margin-top: 16px; background: var(--panel); border: 1px solid var(--border);
  border-radius: 12px; padding: 16px 18px;
}
.wo-instruction { color: var(--text-dim); font-size: 14px; margin: 0 0 14px; line-height: 1.5; }
.wo-actions { display: flex; gap: 12px; flex-wrap: wrap; }
#woSelfCorrect { border-color: var(--success); color: var(--success); }
#woSelfCorrect:hover { background: #1a3d1f; }
#woSelfWrong   { border-color: var(--error); color: var(--error); }
#woSelfWrong:hover { background: #3d1a1a; }

/* work-area: single-column when XML panel is hidden */
.work-area .xml-panel[hidden] + .panel {
  grid-column: 1 / -1;
}

/* task text for challenges where task contains code snippets */
#cTask.code-task {
  white-space: pre-wrap;
  font-family: var(--mono);
  font-size: 13px;
  line-height: 1.6;
  background: #0f1830;
  border-radius: 8px;
  padding: 10px 14px;
  margin-top: 8px;
  overflow-x: auto;
}

/* ============================================================
   Review Banner (Weltauswahl)
   ============================================================ */
.review-banner {
  display: flex; align-items: center; justify-content: space-between;
  background: var(--panel); border: 1px solid var(--accent-dk);
  border-radius: 12px; padding: 14px 20px; margin-bottom: 20px;
  gap: 14px; animation: fadeIn .3s;
}
#reviewBannerText { font-weight: 600; color: var(--accent); }
.review-start-btn { padding: 8px 16px; font-size: 13px; }

/* Mastery badge on challenge tile (world card dots) */
.mastered-badge {
  display: inline-block; font-size: 11px; color: var(--accent);
  font-family: var(--mono);
}
.world-mastered-line {
  font-size: 12px; color: var(--accent); font-family: var(--mono);
  margin-top: 2px;
}

/* ============================================================
   Combo Display
   ============================================================ */
.stat.combo {
  color: #ff8a3d; font-family: var(--mono); font-weight: 800;
  font-size: 15px; animation: comboPop .3s;
}
@keyframes comboPop {
  0%   { transform: scale(.8); opacity: .6; }
  60%  { transform: scale(1.2); }
  100% { transform: scale(1); opacity: 1; }
}
/* On Fire: header border flash */
#topbar.on-fire {
  border-bottom-color: #ff8a3d;
  animation: onFirePulse .6s;
}
@keyframes onFirePulse {
  0%,100% { border-bottom-color: var(--border); }
  40%     { border-bottom-color: #ff8a3d; box-shadow: 0 4px 20px #ff8a3d40; }
}
/* Combo lost animation */
.combo-lost {
  position: absolute; font-family: var(--mono); font-size: 14px;
  color: #ff8a3d; opacity: .8; animation: comboLost .6s forwards; pointer-events: none;
}
@keyframes comboLost {
  0%   { opacity: .8; transform: translateY(0); }
  100% { opacity: 0; transform: translateY(-30px); }
}

/* Combo float label next to XP float */
.combo-float {
  position: absolute; font-family: var(--mono); font-weight: 800; font-size: 17px;
  color: #ff8a3d; text-shadow: 0 2px 8px #000; animation: xpFloat 1.1s forwards;
}

/* ============================================================
   LLM-Lernprompt Button
   ============================================================ */
.llm-prompt-btn {
  border-color: #9c6fff; color: #c4a0ff;
  animation: fadeIn .3s;
}
.llm-prompt-btn:hover { background: #1e1040; border-color: #c4a0ff; }

.llm-prompt-feedback {
  font-size: 12px; color: var(--text-dim); margin-top: 6px;
  animation: fadeIn .3s;
}

/* ============================================================
   Achievement System
   ============================================================ */
/* Unlock overlay */
.achievement-unlock-overlay { z-index: 150; background: #0a0e1c99; }
.achievement-unlock-card {
  border-color: var(--accent); text-align: center; padding: 32px 40px;
  max-width: 360px; animation: popIn .35s;
}
.achievement-unlock-icon { font-size: 60px; animation: bounce 1s; }
.achievement-unlock-label {
  font-size: 12px; letter-spacing: 1.5px; text-transform: uppercase;
  color: var(--accent); margin: 8px 0 4px; font-weight: 700;
}
.achievement-unlock-name { font-size: 20px; font-weight: 800; margin: 0 0 6px; }
.achievement-unlock-desc { color: var(--text-dim); font-size: 14px; }

/* Achievement gallery modal */
.achievement-modal-card {
  max-width: 560px; width: 92%; padding: 0;
  max-height: 85vh; display: flex; flex-direction: column;
}
.achievement-modal-header {
  display: flex; justify-content: space-between; align-items: center;
  padding: 18px 22px 14px; border-bottom: 1px solid var(--border);
}
.achievement-modal-header h2 { margin: 0; font-size: 18px; }

.achievement-grid {
  display: grid; grid-template-columns: 1fr 1fr; gap: 12px;
  padding: 18px 22px 22px; overflow-y: auto;
}
@media (max-width: 520px) { .achievement-grid { grid-template-columns: 1fr; } }

.achievement-badge {
  background: var(--panel-2); border: 1px solid var(--border);
  border-radius: 12px; padding: 14px 16px; display: flex; gap: 14px;
  align-items: flex-start; transition: .15s;
}
.achievement-badge.unlocked { border-color: var(--accent); background: #1e2a3a; }
.achievement-badge.locked { opacity: .45; filter: grayscale(.8); }
.achievement-badge-icon { font-size: 28px; flex-shrink: 0; }
.achievement-badge-info { display: flex; flex-direction: column; gap: 2px; }
.achievement-badge-name { font-weight: 700; font-size: 14px; }
.achievement-badge-desc { font-size: 12px; color: var(--text-dim); line-height: 1.4; }

/* #achievementBtn glow when new achievement */
#achievementBtn.has-new { color: var(--accent); border-color: var(--accent); animation: statPulse .6s 2; }

/* ============================================================
   Concept Card Sandbox
   ============================================================ */
.concept-sandbox {
  margin: 14px 0 0; border-top: 1px solid var(--border);
  padding-top: 14px;
}
.concept-sandbox-label {
  font-size: 12px; color: var(--text-dim); margin-bottom: 6px;
  letter-spacing: .5px; font-weight: 600;
}
.concept-sandbox-input {
  font-family: var(--mono); font-size: 13px; line-height: 1.5;
  background: #0f1830; color: var(--text); border: 1px solid var(--border);
  border-radius: 8px; padding: 8px 10px; width: 100%; resize: none;
  outline: none; min-height: 52px;
}
.concept-sandbox-input:focus { border-color: var(--accent-dk); }
.concept-sandbox-actions {
  display: flex; gap: 8px; margin-top: 8px; flex-wrap: wrap;
}
.concept-sandbox-run {
  background: var(--panel-2); color: var(--accent); border: 1px solid var(--accent-dk);
  border-radius: 8px; padding: 6px 14px; font-size: 13px; cursor: pointer;
  font-family: var(--sans); transition: .15s;
}
.concept-sandbox-run:hover { background: var(--panel); border-color: var(--accent); }
.concept-sandbox-reset {
  background: none; color: var(--text-dim); border: 1px solid var(--border);
  border-radius: 8px; padding: 6px 12px; font-size: 13px; cursor: pointer;
  font-family: var(--sans); transition: .15s;
}
.concept-sandbox-reset:hover { color: var(--text); }
.concept-sandbox-hint-text {
  font-size: 12px; color: var(--text-dim); align-self: center;
  font-style: italic;
}
.concept-sandbox-output {
  font-family: var(--mono); font-size: 12.5px; line-height: 1.45;
  background: #0f1830; border: 1px solid var(--border); border-radius: 8px;
  padding: 8px 10px; margin-top: 8px; white-space: pre-wrap;
  word-break: break-word; min-height: 36px; color: var(--text-dim);
  max-height: 120px; overflow: auto;
}
.concept-sandbox-output.has-result { color: var(--text); border-color: var(--success); }
.concept-sandbox-output.has-error  { color: #ffb4ae; border-color: var(--error); }

/* ============================================================
   Intro Overlay (3 Slides)
   ============================================================ */
.intro-overlay {
  position: fixed; inset: 0; background: #0a0e1cf0;
  display: flex; align-items: center; justify-content: center;
  z-index: 200; backdrop-filter: blur(6px);
}
.intro-card {
  background: var(--panel); border: 1px solid var(--accent);
  border-radius: 18px; max-width: 580px; width: 92%;
  display: flex; flex-direction: column; max-height: 90vh;
  animation: popIn .4s;
}
.intro-slides { padding: 32px 32px 20px; overflow-y: auto; flex: 1; }
.intro-slide { display: none; }
.intro-slide.active { display: block; animation: fadeIn .3s; }
.intro-slide-icon { font-size: 44px; margin-bottom: 12px; }
.intro-slide-title { font-size: 20px; font-weight: 800; margin: 0 0 16px; color: var(--accent); }
.intro-slide-pre {
  font-family: var(--mono); font-size: 13px; line-height: 1.75;
  white-space: pre-wrap; background: #0f1830; border-radius: 10px;
  padding: 16px 18px; margin: 0; color: var(--text);
}
.intro-slide-note { color: var(--text-dim); font-size: 14px; margin: 14px 0 0; }
.intro-footer {
  display: flex; align-items: center; justify-content: space-between;
  padding: 16px 32px 24px; border-top: 1px solid var(--border);
}
.intro-dots { display: flex; gap: 8px; }
.intro-dot {
  width: 10px; height: 10px; border-radius: 50%;
  background: var(--border); cursor: pointer; transition: .2s;
}
.intro-dot.active { background: var(--accent); transform: scale(1.2); }
.intro-actions { display: flex; gap: 12px; align-items: center; }

/* ============================================================
   Quiz Screen
   ============================================================ */
.quiz-banner {
  display: flex; align-items: center; justify-content: space-between;
  background: var(--panel); border: 1px solid var(--border);
  border-radius: 14px; padding: 18px 22px; margin-top: 22px; gap: 14px;
  transition: .18s;
}
.quiz-banner:hover { border-color: var(--accent); }
.quiz-banner-left { display: flex; align-items: center; gap: 16px; }
.quiz-banner-icon { font-size: 32px; }
.quiz-banner-title { font-size: 16px; font-weight: 700; }
.quiz-banner-sub { font-size: 13px; color: var(--text-dim); margin-top: 2px; }

.quiz-question-card { margin-bottom: 14px; }
.quiz-question-text {
  font-size: 17px; line-height: 1.55; font-weight: 600;
  margin: 8px 0 0; color: var(--text);
}
.quiz-multi-hint { font-size: 13px; color: var(--accent); margin: 6px 0 0; font-style: italic; }

.quiz-options {
  display: flex; flex-direction: column; gap: 10px; margin-bottom: 16px;
}
.quiz-option {
  background: var(--panel); border: 1.5px solid var(--border);
  border-radius: 12px; padding: 16px 18px; text-align: left;
  color: var(--text); font-size: 15px; font-family: var(--sans);
  cursor: pointer; transition: .15s; display: flex; gap: 14px;
  align-items: flex-start; min-height: 48px; line-height: 1.4;
  -webkit-tap-highlight-color: transparent;
}
.quiz-option:hover:not(:disabled):not(.locked) { border-color: var(--accent); background: var(--panel-2); }
.quiz-option.selected { border-color: var(--accent); background: #1e2d40; }
.quiz-option.correct  { border-color: var(--success); background: #1a3d1f; color: #a8f0a8; }
.quiz-option.wrong    { border-color: var(--error);   background: #3d1a1a; color: #f0a8a8; }
.quiz-option.locked   { cursor: default; }
.quiz-option-letter {
  font-family: var(--mono); font-weight: 700; font-size: 13px;
  color: var(--accent); min-width: 20px; flex-shrink: 0; padding-top: 1px;
}
.quiz-option-check {
  width: 20px; height: 20px; border: 2px solid var(--border);
  border-radius: 4px; flex-shrink: 0; margin-top: 1px; display: flex;
  align-items: center; justify-content: center; font-size: 13px;
  transition: .15s; background: var(--panel-2);
}
.quiz-option.selected .quiz-option-check { border-color: var(--accent); background: var(--accent); color: #1a1a2e; }
.quiz-option.correct .quiz-option-check  { border-color: var(--success); background: var(--success); color: #08240c; }
.quiz-option.wrong .quiz-option-check    { border-color: var(--error);   background: var(--error);   color: #fff; }

/* Quiz explanation box */
#quizExplanation { margin-top: 14px; }

/* ============================================================
   Glossar Modal
   ============================================================ */
.glossary-modal-card {
  max-width: 600px; width: 94%; padding: 0;
  max-height: 88vh; display: flex; flex-direction: column;
}
.glossary-modal-header {
  display: flex; justify-content: space-between; align-items: center;
  padding: 18px 22px 14px; border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}
.glossary-modal-header h2 { margin: 0; font-size: 18px; }
.glossary-search {
  margin: 12px 22px 0; padding: 9px 14px; border-radius: 10px;
  border: 1px solid var(--border); background: var(--panel-2);
  color: var(--text); font-size: 14px; font-family: var(--sans);
  outline: none; flex-shrink: 0;
}
.glossary-search:focus { border-color: var(--accent); }
.glossary-list {
  overflow-y: auto; padding: 12px 22px 22px; flex: 1; margin-top: 10px;
}
.glossary-entry {
  padding: 10px 0; border-bottom: 1px solid var(--border);
  display: grid; grid-template-columns: 160px 140px 1fr; gap: 10px;
  align-items: baseline; font-size: 14px; line-height: 1.4;
}
@media (max-width: 540px) {
  .glossary-entry { grid-template-columns: 1fr 1fr; }
  .glossary-entry-desc { grid-column: 1 / -1; color: var(--text-dim); font-size: 13px; }
}
.glossary-entry:last-child { border-bottom: none; }
.glossary-entry-de { font-weight: 700; color: var(--text); }
.glossary-entry-de.highlight { color: var(--accent); }
.glossary-entry-en { color: var(--text-dim); font-style: italic; font-family: var(--mono); font-size: 13px; }
.glossary-entry-desc { color: var(--text-dim); font-size: 13px; }
.glossary-entry.hidden-entry { display: none; }

/* ============================================================
   Mobile Tabs (challenge screen)
   ============================================================ */
.mobile-tabs {
  display: none; /* hidden on desktop */
  background: var(--panel); border-bottom: 1px solid var(--border);
  margin-bottom: 12px; border-radius: 0;
}
.mobile-tab {
  flex: 1; background: none; border: none; color: var(--text-dim);
  padding: 12px 0; font-size: 14px; font-family: var(--sans);
  cursor: pointer; border-bottom: 2px solid transparent; transition: .15s;
  min-height: 48px;
}
.mobile-tab.active { color: var(--accent); border-bottom-color: var(--accent); }

/* Mobile panel visibility via data-mobile-visible attribute */
[data-mobile-hidden] { display: none !important; }

@media (max-width: 768px) {
  /* Show tab bar */
  .mobile-tabs { display: flex; }

  /* Override the work-area 2-col grid */
  .work-area {
    display: block !important;
  }

  /* Touch-friendly action bar buttons */
  .action-bar button { min-height: 48px; }
  .primary-btn, .ghost-btn { font-size: 15px; }

  /* Editor font-size 16px prevents iOS auto-zoom */
  #editor { font-size: 16px; }

  /* World grid: single column on small phones */
  .world-grid { grid-template-columns: 1fr !important; }

  /* Quiz options: bigger tap targets already from quiz-option min-height */

  /* Topbar: compact on mobile */
  .brand-sub { display: none; }
  .stats { gap: 8px; }
  .stat { padding: 5px 9px; font-size: 13px; }
}