/* ════════════════════════════════════════════ Minecraft Theme – Serva */
@import url('https://fonts.googleapis.com/css2?family=Press+Start+2P&display=swap');

/* ══════════════════════════════════════════════════════ CSS Variables */
:root {
  /* Minecraft greens (from logo) */
  --mc-green:        #7CB542;
  --mc-green-dark:   #4A7C20;
  --mc-green-darker: #2D5A0B;
  --mc-green-light:  #9DD456;

  /* Neutrals */
  --mc-bg:           #1A1A1A;
  --mc-bg2:          #222222;
  --mc-surface:      #3D3D3D;
  --mc-surface2:     #4D4D4D;
  --mc-border-hi:    #888888;
  --mc-border-lo:    #111111;
  --mc-border-mid:   #555555;

  /* Text */
  --mc-text:         #FFFFFF;
  --mc-text-shadow:  #3F3F3F;
  --mc-text-muted:   #AAAAAA;
  --mc-text-dim:     #777777;

  /* Feedback colors */
  --mc-success:      #55FF55;
  --mc-success-bg:   #1A3D1A;
  --mc-error:        #FF5555;
  --mc-error-bg:     #3D1A1A;
  --mc-partial:      #FFAA00;
  --mc-partial-bg:   #3D2D00;

  /* Minecraft XP bar green */
  --mc-xp:           #80C000;
  --mc-gold:         #FFCA28;
  --mc-diamond:      #55FFFF;

  --font-pixel: 'Press Start 2P', 'Courier New', monospace;
  --font-body:  'Press Start 2P', 'Courier New', monospace;
}

/* ═══════════════════════════════════════════════════════════ Reset */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 16px; }
body {
  font-family: var(--font-body);
  background-color: var(--mc-bg);
  background-image:
    linear-gradient(rgba(255,255,255,0.018) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.018) 1px, transparent 1px);
  background-size: 16px 16px;
  color: var(--mc-text);
  min-height: 100vh;
  line-height: 1.8;
  image-rendering: pixelated;
}
button { cursor: pointer; font-family: inherit; }
input, select, textarea { font-family: inherit; }

/* ═══════════════════════════════════════════════════ View System */
.view { display: none; }
.view.active { display: block; }
.app-view { min-height: calc(100vh - 56px); padding: 20px 0 48px; }
.hidden { display: none !important; }

/* ═════════════════════════════════════════════════════ Container */
.container { max-width: 960px; margin: 0 auto; padding: 0 16px; }

/* ═══════════════════════════════════════════════════ MC Panel (Card) */
/* Minecraft inventory-panel look: dark bg, inset 3D border */
.card {
  background: var(--mc-surface);
  border: 2px solid var(--mc-border-mid);
  box-shadow:
    inset  2px  2px 0 var(--mc-border-hi),
    inset -2px -2px 0 var(--mc-border-lo);
  padding: 20px;
  border-radius: 0;
}

/* ═════════════════════════════════════════════════════ Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 10px 18px;
  border: none;
  border-radius: 0;
  font-family: var(--font-pixel);
  font-size: 0.6rem;
  font-weight: normal;
  letter-spacing: 0.03em;
  color: var(--mc-text);
  text-shadow: 2px 2px var(--mc-text-shadow);
  background: var(--mc-surface2);
  box-shadow:
    inset  2px  2px 0 var(--mc-border-hi),
    inset -2px -4px 0 var(--mc-border-lo);
  transition: background 0.1s, box-shadow 0.1s;
  white-space: nowrap;
  cursor: pointer;
}
.btn:hover:not(:disabled) {
  background: #5D5D5D;
  box-shadow:
    inset  2px  2px 0 #999,
    inset -2px -4px 0 var(--mc-border-lo);
}
.btn:active:not(:disabled) {
  box-shadow:
    inset  2px  4px 0 var(--mc-border-lo),
    inset -2px -2px 0 var(--mc-border-hi);
  transform: translateY(2px);
}
.btn:disabled { opacity: 0.4; cursor: not-allowed; }

.btn-primary {
  background: var(--mc-green-dark);
  box-shadow:
    inset  2px  2px 0 var(--mc-green-light),
    inset -2px -4px 0 var(--mc-green-darker);
  color: var(--mc-text);
}
.btn-primary:hover:not(:disabled) {
  background: var(--mc-green);
  box-shadow:
    inset  2px  2px 0 var(--mc-green-light),
    inset -2px -4px 0 var(--mc-green-darker);
}
.btn-outline {
  background: transparent;
  border: 2px solid var(--mc-border-mid);
  box-shadow: none;
  color: var(--mc-text-muted);
}
.btn-outline:hover:not(:disabled) {
  background: var(--mc-surface2);
  color: var(--mc-text);
  box-shadow: none;
}
.btn-full { width: 100%; }
.btn-sm { padding: 6px 12px; font-size: 0.55rem; }

/* ═══════════════════════════════════════════════════════ Forms */
.form-group { margin-bottom: 16px; }
.form-group label {
  display: block;
  font-size: 0.55rem;
  color: var(--mc-green);
  text-shadow: 1px 1px var(--mc-green-darker);
  margin-bottom: 8px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}
.form-group input[type="text"],
.form-group select {
  width: 100%;
  padding: 10px 12px;
  background: var(--mc-bg2);
  border: 2px solid var(--mc-border-mid);
  box-shadow:
    inset  2px  2px 0 var(--mc-border-lo),
    inset -2px -2px 0 var(--mc-border-hi);
  border-radius: 0;
  font-size: 0.65rem;
  color: var(--mc-text);
  transition: border-color 0.1s;
}
.form-group input[type="text"]:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--mc-green);
}
.form-group select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='8' height='8'%3E%3Cpath fill='%237CB542' d='M0 0h8L4 6z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 10px center;
  padding-right: 28px;
  cursor: pointer;
}
.form-group select option { background: var(--mc-bg2); color: var(--mc-text); }
.form-group input[type="range"] {
  width: 100%;
  accent-color: var(--mc-green);
  cursor: pointer;
  height: 8px;
  background: var(--mc-bg2);
  border: none;
  box-shadow: inset 2px 2px 0 var(--mc-border-lo);
  padding: 0;
  border-radius: 0;
}
.error-msg { color: var(--mc-error); font-size: 0.55rem; margin-top: 8px; text-shadow: 1px 1px #000; }

/* ═══════════════════════════════════════════════════════ Navbar */
.navbar {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--mc-bg);
  border-bottom: 4px solid var(--mc-green-dark);
  box-shadow: 0 4px 0 var(--mc-green-darker);
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 0 16px;
  height: 56px;
}
.nav-brand {
  display: flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
  text-decoration: none;
  margin-right: 8px;
  flex-shrink: 0;
}
.nav-logo-img {
  width: 36px;
  height: 36px;
  image-rendering: pixelated;
  object-fit: contain;
}
.nav-title {
  font-family: var(--font-pixel);
  font-size: 0.9rem;
  color: var(--mc-green);
  text-shadow: 2px 2px var(--mc-green-darker);
  letter-spacing: 0.05em;
}
.nav-links { display: flex; gap: 2px; flex: 1; }
.nav-btn {
  background: transparent;
  color: var(--mc-text-muted);
  border: none;
  padding: 6px 12px;
  font-family: var(--font-pixel);
  font-size: 0.55rem;
  border-radius: 0;
  transition: color 0.1s, background 0.1s;
  text-shadow: 1px 1px #000;
}
.nav-btn:hover, .nav-btn.active {
  color: var(--mc-green);
  background: rgba(124,181,66,0.1);
  text-shadow: 1px 1px var(--mc-green-darker);
}
.nav-user {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-left: auto;
  flex-shrink: 0;
}
.nav-xp-bar { display: flex; align-items: center; gap: 6px; }
.nav-level-badge {
  background: var(--mc-green-dark);
  color: var(--mc-text);
  box-shadow:
    inset  1px  1px 0 var(--mc-green),
    inset -1px -2px 0 var(--mc-green-darker);
  width: 26px;
  height: 26px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.55rem;
  border-radius: 0;
}
.nav-xp-track {
  width: 80px;
  height: 8px;
  background: var(--mc-bg2);
  box-shadow: inset 1px 1px 0 #000, inset -1px -1px 0 #444;
  border-radius: 0;
  overflow: hidden;
}
.nav-xp-fill {
  height: 100%;
  background: var(--mc-xp);
  box-shadow: inset 0 -2px 0 rgba(0,0,0,0.4);
  border-radius: 0;
  transition: width 0.6s steps(20);
}
.nav-xp-text { font-size: 0.5rem; color: var(--mc-xp); text-shadow: 1px 1px #000; }
.nav-avatar {
  width: 32px;
  height: 32px;
  background: var(--mc-green-dark);
  color: var(--mc-text);
  box-shadow:
    inset  1px  1px 0 var(--mc-green),
    inset -1px -2px 0 var(--mc-green-darker);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.6rem;
  border-radius: 0;
  image-rendering: pixelated;
}
.nav-logout {
  font-size: 0.5rem !important;
  color: var(--mc-text-muted) !important;
  padding: 4px 8px !important;
}

/* ════════════════════════════════════════════════ Login View */
.login-container {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 20px;
  background: var(--mc-bg);
  /* Subtle dirt texture pattern */
  background-image: radial-gradient(circle at 50% 0%, rgba(74,124,32,0.08) 0%, transparent 60%);
}
.logo {
  text-align: center;
  margin-bottom: 28px;
}
.logo-img {
  width: 120px;
  height: 120px;
  object-fit: contain;
  image-rendering: pixelated;
  margin-bottom: 8px;
}
.logo h1 {
  font-family: var(--font-pixel);
  font-size: 1.8rem;
  color: var(--mc-green);
  text-shadow: 3px 3px var(--mc-green-darker), 4px 4px #000;
  letter-spacing: 0.1em;
  margin-bottom: 8px;
}
.tagline {
  color: var(--mc-text-muted);
  font-size: 0.55rem;
  letter-spacing: 0.08em;
}
.login-card { width: 100%; max-width: 440px; }
.login-card h2 {
  font-size: 0.75rem;
  color: var(--mc-green);
  text-shadow: 2px 2px var(--mc-green-darker);
  margin-bottom: 12px;
}
.login-hint { color: var(--mc-text-muted); font-size: 0.55rem; margin-bottom: 20px; line-height: 1.8; }
.login-users-section { margin-top: 20px; border-top: 2px solid var(--mc-border-mid); padding-top: 16px; }
.login-users-label { font-size: 0.5rem; color: var(--mc-text-dim); margin-bottom: 10px; }
.login-users-list { display: flex; flex-wrap: wrap; gap: 8px; }
.login-user-chip {
  background: var(--mc-surface);
  border: 2px solid var(--mc-border-mid);
  box-shadow:
    inset  2px  2px 0 var(--mc-border-hi),
    inset -2px -2px 0 var(--mc-border-lo);
  padding: 8px 14px;
  font-size: 0.55rem;
  color: var(--mc-text);
  cursor: pointer;
  border-radius: 0;
  transition: background 0.1s;
}
.login-user-chip:hover {
  background: var(--mc-green-dark);
  border-color: var(--mc-green);
  box-shadow:
    inset  2px  2px 0 var(--mc-green-light),
    inset -2px -2px 0 var(--mc-green-darker);
  color: #fff;
}

/* ══════════════════════════════════════════════ Dashboard View */
.dashboard-header { margin-bottom: 24px; }
.greeting h2 {
  font-size: 0.9rem;
  color: var(--mc-green);
  text-shadow: 2px 2px var(--mc-green-darker);
  margin-bottom: 4px;
}
.greeting p {
  font-size: 0.55rem;
  color: var(--mc-text-muted);
}
.stats-row {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-top: 16px;
}
.stat-card {
  background: var(--mc-surface);
  border: 2px solid var(--mc-border-mid);
  box-shadow:
    inset  2px  2px 0 var(--mc-border-hi),
    inset -2px -2px 0 var(--mc-border-lo);
  padding: 10px 14px;
  text-align: center;
  min-width: 82px;
  border-radius: 0;
}
.stat-value {
  font-size: 0.85rem;
  color: var(--mc-green);
  text-shadow: 1px 1px var(--mc-green-darker);
  margin-bottom: 4px;
}
.stat-label { font-size: 0.45rem; color: var(--mc-text-muted); text-transform: uppercase; letter-spacing: 0.06em; }
.dashboard-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
@media (max-width: 700px) { .dashboard-grid { grid-template-columns: 1fr; } }

/* Exercise type grid */
.exercise-type-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 6px; }
.et-btn {
  padding: 8px 10px;
  background: var(--mc-surface2);
  border: 2px solid var(--mc-border-mid);
  box-shadow:
    inset  2px  2px 0 var(--mc-border-hi),
    inset -2px -2px 0 var(--mc-border-lo);
  font-family: var(--font-pixel);
  font-size: 0.5rem;
  text-align: left;
  color: var(--mc-text);
  cursor: pointer;
  border-radius: 0;
  transition: background 0.1s;
}
.et-btn:hover { background: #5D5D5D; }
.et-btn.active {
  background: var(--mc-green-dark);
  border-color: var(--mc-green);
  box-shadow:
    inset  2px  2px 0 var(--mc-green-light),
    inset -2px -2px 0 var(--mc-green-darker);
}
.et-btn-label { display: block; margin-bottom: 3px; }
.et-btn-desc { color: var(--mc-text-muted); font-size: 0.45rem; display: block; line-height: 1.5; }
.et-btn.active .et-btn-desc { color: rgba(255,255,255,0.7); }
.et-btn-fehler { border-color: var(--mc-error) !important; }
.et-btn-fehler.active { background: rgba(255,85,85,0.15) !important; }
.fehler-count {
  display: block;
  font-size: 0.45rem;
  color: var(--mc-error);
  margin-top: 4px;
}

/* Direction toggle */
.direction-toggle { display: flex; gap: 6px; }
.dir-btn {
  flex: 1;
  padding: 8px 6px;
  background: var(--mc-surface2);
  border: 2px solid var(--mc-border-mid);
  box-shadow:
    inset  2px  2px 0 var(--mc-border-hi),
    inset -2px -2px 0 var(--mc-border-lo);
  font-family: var(--font-pixel);
  font-size: 0.5rem;
  color: var(--mc-text-muted);
  cursor: pointer;
  border-radius: 0;
  transition: background 0.1s;
}
.dir-btn:hover { background: #5D5D5D; color: var(--mc-text); }
.dir-btn.active {
  background: var(--mc-green-dark);
  border-color: var(--mc-green);
  color: #fff;
  box-shadow:
    inset  2px  2px 0 var(--mc-green-light),
    inset -2px -2px 0 var(--mc-green-darker);
}

/* Kasus filter toggle */
.kasus-toggle { display: flex; gap: 6px; flex-wrap: wrap; }
.kasus-btn {
  padding: 6px 10px;
  background: var(--mc-surface2);
  border: 2px solid var(--mc-border-mid);
  color: var(--mc-text-dim);
  font-family: inherit;
  font-size: 0.8rem;
  cursor: pointer;
  border-radius: 0;
  transition: background 0.1s;
}
.kasus-btn:hover { background: #5D5D5D; color: var(--mc-text); }
.kasus-btn.active {
  background: var(--mc-green-dark);
  border-color: var(--mc-green);
  color: #fff;
  box-shadow:
    inset  2px  2px 0 var(--mc-green-light),
    inset -2px -2px 0 var(--mc-green-darker);
}

/* Topic checkboxes */
.topic-checkboxes {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  max-height: 110px;
  overflow-y: auto;
  scrollbar-width: thin;
  scrollbar-color: var(--mc-green-dark) var(--mc-bg2);
}
.topic-check-label {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 4px 10px;
  background: var(--mc-surface2);
  border: 2px solid var(--mc-border-mid);
  font-family: var(--font-pixel);
  font-size: 0.5rem;
  color: var(--mc-text-muted);
  cursor: pointer;
  border-radius: 0;
  transition: background 0.1s;
}
.topic-check-label:hover { border-color: var(--mc-green); color: var(--mc-text); }
.topic-check-label input[type="checkbox"] { accent-color: var(--mc-green); }
.topic-check-label.checked {
  background: var(--mc-green-dark);
  border-color: var(--mc-green);
  color: #fff;
}

/* Recent scores */
.recent-scores { display: flex; flex-direction: column; gap: 8px; }
.recent-score-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 12px;
  background: var(--mc-bg2);
  border: 2px solid var(--mc-border-mid);
  box-shadow: inset 1px 1px 0 var(--mc-border-lo);
  border-radius: 0;
}
.recent-score-mode { font-size: 0.5rem; color: var(--mc-text-muted); }
.recent-score-result { font-size: 0.55rem; font-weight: normal; color: var(--mc-green); text-shadow: 1px 1px #000; }
.recent-empty { color: var(--mc-text-dim); font-size: 0.5rem; }

/* ═══════════════════════════════════════════════════ Quiz View */
.quiz-container { max-width: 680px; margin: 0 auto; }
.quiz-header {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 20px;
  flex-wrap: wrap;
}
.quiz-progress-wrap { flex: 1; min-width: 140px; }
.quiz-progress-bar {
  height: 12px;
  background: var(--mc-bg2);
  box-shadow: inset 2px 2px 0 #000, inset -2px -2px 0 #444;
  border-radius: 0;
  overflow: hidden;
  margin-bottom: 4px;
}
.quiz-progress-fill {
  height: 100%;
  background: var(--mc-xp);
  box-shadow: inset 0 -3px 0 rgba(0,0,0,0.4);
  border-radius: 0;
  transition: width 0.3s steps(10);
}
.quiz-progress-text { font-size: 0.5rem; color: var(--mc-text-muted); }
.quiz-score-info { display: flex; gap: 10px; font-size: 0.55rem; }
#quiz-correct-count { color: var(--mc-success); text-shadow: 1px 1px #000; }
#quiz-xp-count      { color: var(--mc-xp); text-shadow: 1px 1px #000; }

.question-card {
  margin-bottom: 16px;
  animation: card-in 0.2s steps(4);
}
@keyframes card-in {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: translateY(0); }
}
.question-type-badge {
  display: inline-block;
  background: var(--mc-green-dark);
  color: var(--mc-text);
  box-shadow:
    inset  1px  1px 0 var(--mc-green),
    inset -1px -2px 0 var(--mc-green-darker);
  padding: 4px 10px;
  font-size: 0.48rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 14px;
  border-radius: 0;
}
.question-text {
  font-size: 0.8rem;
  color: var(--mc-text);
  text-shadow: 2px 2px var(--mc-text-shadow);
  margin-bottom: 10px;
  line-height: 2;
}
.question-hint {
  font-size: 0.5rem;
  color: var(--mc-text-muted);
  margin-bottom: 14px;
}

/* MC choices — inventory-slot style */
.mc-choices { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }
@media (max-width: 480px) { .mc-choices { grid-template-columns: 1fr; } }
.mc-choice {
  padding: 12px 14px;
  background: var(--mc-surface2);
  border: 2px solid var(--mc-border-mid);
  box-shadow:
    inset  2px  2px 0 var(--mc-border-hi),
    inset -2px -4px 0 var(--mc-border-lo);
  font-family: var(--font-pixel);
  font-size: 0.6rem;
  text-align: left;
  color: var(--mc-text);
  cursor: pointer;
  border-radius: 0;
  transition: background 0.1s;
  line-height: 1.6;
}
.mc-choice:hover:not(:disabled) {
  background: #5D5D5D;
  border-color: var(--mc-green);
  box-shadow:
    inset  2px  2px 0 var(--mc-green-light),
    inset -2px -4px 0 var(--mc-green-darker);
}
.mc-choice.correct {
  background: var(--mc-success-bg);
  border-color: var(--mc-success);
  color: var(--mc-success);
  box-shadow: inset 2px 2px 0 rgba(85,255,85,0.3), inset -2px -4px 0 #001A00;
}
.mc-choice.wrong {
  background: var(--mc-error-bg);
  border-color: var(--mc-error);
  color: var(--mc-error);
  box-shadow: inset 2px 2px 0 rgba(255,85,85,0.3), inset -2px -4px 0 #1A0000;
}
.mc-choice:disabled { cursor: default; }

/* Free text */
.free-text-area { display: flex; gap: 8px; }
.free-text-area input[type="text"] {
  flex: 1;
  padding: 10px 12px;
  background: var(--mc-bg2);
  border: 2px solid var(--mc-border-mid);
  box-shadow:
    inset  2px  2px 0 var(--mc-border-lo),
    inset -2px -2px 0 var(--mc-border-hi);
  border-radius: 0;
  font-family: var(--font-pixel);
  font-size: 0.65rem;
  color: var(--mc-text);
  caret-color: var(--mc-green);
  transition: border-color 0.1s;
}
.free-text-area input[type="text"]:focus {
  outline: none;
  border-color: var(--mc-green);
  box-shadow:
    inset  2px  2px 0 var(--mc-border-lo),
    inset -2px -2px 0 var(--mc-green);
}
.free-text-area input[type="text"]:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

/* Feedback area */
.feedback-area {
  display: none;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  padding: 16px;
  text-align: center;
  border: 2px solid var(--mc-border-mid);
  border-radius: 0;
  animation: fade-in 0.15s steps(3);
}
.feedback-area.visible { display: flex; }
.feedback-area.correct {
  background: var(--mc-success-bg);
  border-color: var(--mc-success);
  box-shadow: inset 2px 2px 0 rgba(85,255,85,0.15);
}
.feedback-area.wrong {
  background: var(--mc-error-bg);
  border-color: var(--mc-error);
  box-shadow: inset 2px 2px 0 rgba(255,85,85,0.15);
}
.feedback-area.partial {
  background: var(--mc-partial-bg);
  border-color: var(--mc-partial);
  box-shadow: inset 2px 2px 0 rgba(255,170,0,0.15);
}
@keyframes fade-in { from { opacity: 0; } to { opacity: 1; } }
.feedback-icon { font-size: 1.8rem; }
.feedback-text { font-size: 0.55rem; color: var(--mc-text); line-height: 2; }
.feedback-xp   { font-size: 0.65rem; color: var(--mc-xp); text-shadow: 1px 1px #000; }

/* Flash on question card */
.question-card.flash-correct { animation: correct-flash 0.4s steps(2); }
.question-card.flash-wrong   { animation: wrong-flash 0.4s steps(2); }
@keyframes correct-flash {
  0%,100% { background: var(--mc-surface); }
  50%      { background: var(--mc-success-bg); }
}
@keyframes wrong-flash {
  0%,100% { background: var(--mc-surface); }
  50%      { background: var(--mc-error-bg); }
}

/* ═══════════════════════════════════════════════ Results View */
.results-container { max-width: 560px; margin: 0 auto; text-align: center; }
.results-title {
  font-size: 1rem;
  color: var(--mc-green);
  text-shadow: 3px 3px var(--mc-green-darker), 4px 4px #000;
  margin-bottom: 28px;
}
.results-score-circle {
  position: relative;
  width: 160px;
  height: 160px;
  margin: 0 auto 24px;
}
.score-svg { width: 100%; height: 100%; transform: rotate(-90deg); }
.score-bg  { fill: none; stroke: var(--mc-bg2); stroke-width: 10; }
.score-arc {
  fill: none;
  stroke: var(--mc-xp);
  stroke-width: 10;
  stroke-linecap: square; /* blocky! */
  stroke-dasharray: 314.16;
  stroke-dashoffset: 314.16;
  transition: stroke-dashoffset 1s steps(20);
}
.score-label {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}
.score-percent {
  font-size: 1.2rem;
  color: var(--mc-green);
  text-shadow: 2px 2px var(--mc-green-darker);
}
.score-fraction { font-size: 0.55rem; color: var(--mc-text-muted); }
.results-stats {
  display: flex;
  justify-content: center;
  gap: 14px;
  margin-bottom: 24px;
  flex-wrap: wrap;
}
.results-badges { display: flex; flex-wrap: wrap; justify-content: center; gap: 10px; margin-bottom: 20px; }
.result-badge-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  padding: 10px 12px;
  background: var(--mc-green-darker);
  border: 2px solid var(--mc-green);
  box-shadow:
    inset  2px  2px 0 var(--mc-green-light),
    inset -2px -2px 0 var(--mc-green-darker);
  animation: badge-pop 0.3s steps(4);
  border-radius: 0;
}
@keyframes badge-pop {
  from { transform: scale(0.5); opacity: 0; }
  to   { transform: scale(1);   opacity: 1; }
}
.result-badge-icon { font-size: 1.6rem; }
.result-badge-name { font-size: 0.5rem; color: var(--mc-green-light); }
.results-level-up {
  padding: 14px;
  background: var(--mc-green-darker);
  border: 2px solid var(--mc-green);
  box-shadow:
    inset  2px  2px 0 var(--mc-green-light),
    inset -2px -2px 0 var(--mc-green-darker);
  margin-bottom: 20px;
  animation: level-up 0.4s steps(4);
  border-radius: 0;
}
@keyframes level-up {
  0%   { transform: scale(0.8); opacity: 0; }
  60%  { transform: scale(1.05); }
  100% { transform: scale(1); opacity: 1; }
}
.level-up-icon { font-size: 2rem; }
.level-up-text { font-size: 0.8rem; color: var(--mc-green); text-shadow: 2px 2px var(--mc-green-darker); }
.level-up-name { font-size: 0.55rem; color: var(--mc-text-muted); margin-top: 4px; }
.results-actions { display: flex; gap: 10px; justify-content: center; flex-wrap: wrap; }

/* ═══════════════════════════════════════════ Vocab Browser */
.vocab-controls { display: flex; gap: 10px; margin-bottom: 16px; flex-wrap: wrap; }
.vocab-search-input {
  flex: 1;
  min-width: 180px;
  padding: 10px 12px;
  background: var(--mc-bg2);
  border: 2px solid var(--mc-border-mid);
  box-shadow: inset 2px 2px 0 var(--mc-border-lo), inset -2px -2px 0 var(--mc-border-hi);
  border-radius: 0;
  font-family: var(--font-pixel);
  font-size: 0.6rem;
  color: var(--mc-text);
  caret-color: var(--mc-green);
}
.vocab-search-input:focus { outline: none; border-color: var(--mc-green); }
.vocab-topic-select {
  padding: 10px 28px 10px 12px;
  background: var(--mc-bg2);
  border: 2px solid var(--mc-border-mid);
  box-shadow: inset 2px 2px 0 var(--mc-border-lo);
  border-radius: 0;
  font-family: var(--font-pixel);
  font-size: 0.55rem;
  color: var(--mc-text);
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='8' height='8'%3E%3Cpath fill='%237CB542' d='M0 0h8L4 6z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 10px center;
  cursor: pointer;
}
.vocab-table-wrap { overflow-x: auto; }
.vocab-table { width: 100%; border-collapse: collapse; font-size: 0.55rem; }
.vocab-table th {
  background: var(--mc-green-dark);
  color: var(--mc-text);
  text-shadow: 1px 1px var(--mc-green-darker);
  padding: 10px 12px;
  text-align: left;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  box-shadow: inset 0 -2px 0 var(--mc-green-darker);
}
.vocab-table td {
  padding: 9px 12px;
  border-bottom: 2px solid var(--mc-bg2);
  background: var(--mc-surface);
  line-height: 1.8;
}
.vocab-table tr:nth-child(even) td { background: var(--mc-surface2); }
.vocab-table tr:hover td { background: rgba(124,181,66,0.08); }
.vocab-latin { color: var(--mc-green-light); text-shadow: 1px 1px #000; }
.vocab-grammar { color: var(--mc-text-muted); font-size: 0.48rem; }
.vocab-topic-tag {
  display: inline-block;
  background: var(--mc-green-dark);
  color: var(--mc-text);
  padding: 2px 8px;
  font-size: 0.45rem;
  border-radius: 0;
  border: 1px solid var(--mc-green);
}
.vocab-empty { text-align: center; color: var(--mc-text-dim); font-size: 0.55rem; padding: 32px; display: flex; flex-direction: column; align-items: center; gap: 12px; }
.vocab-ai-btn { font-size: 0.55rem; padding: 8px 16px; }
.vocab-row { cursor: pointer; }
.vocab-row.decl-active td { background: rgba(124,181,66,0.15) !important; border-left: 3px solid var(--mc-green); }

/* ═══════════════════════════════════════════ Declension Panel */
.decl-panel {
  margin-top: 12px;
  border: 2px solid var(--mc-green-dark);
  box-shadow: inset 2px 2px 0 var(--mc-green-darker), 4px 4px 0 #000;
  background: var(--mc-bg2);
}
.decl-panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 12px;
  background: var(--mc-green-dark);
  font-size: 0.55rem;
  color: var(--mc-text);
  text-shadow: 1px 1px #000;
}
.decl-close-btn {
  background: none;
  border: none;
  color: var(--mc-text);
  font-size: 0.6rem;
  cursor: pointer;
  padding: 0 4px;
  line-height: 1;
}
.decl-close-btn:hover { color: var(--mc-error); }
.decl-body { padding: 12px; }
.decl-loading, .decl-error {
  text-align: center;
  font-size: 0.55rem;
  color: var(--mc-text-muted);
  padding: 16px;
}
.decl-error { color: var(--mc-error); }
.decl-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.55rem;
}
.decl-table th {
  background: var(--mc-surface2);
  color: var(--mc-text-muted);
  padding: 6px 12px;
  text-align: left;
  border-bottom: 2px solid var(--mc-border-mid);
  font-size: 0.48rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.decl-table td {
  padding: 7px 12px;
  border-bottom: 1px solid var(--mc-border-lo);
}
.decl-table tr:last-child td { border-bottom: none; }
.decl-table tr:hover td { background: rgba(124,181,66,0.06); }
.decl-case {
  color: var(--mc-text-muted);
  font-size: 0.48rem;
  width: 90px;
}
.decl-form { color: var(--mc-green-light); text-shadow: 1px 1px #000; }

/* ═══════════════════════════════════════════ High Scores */
.scores-tabs { display: flex; gap: 6px; margin-bottom: 16px; }
.tab-btn {
  padding: 8px 18px;
  background: var(--mc-surface2);
  border: 2px solid var(--mc-border-mid);
  box-shadow:
    inset  2px  2px 0 var(--mc-border-hi),
    inset -2px -2px 0 var(--mc-border-lo);
  font-family: var(--font-pixel);
  font-size: 0.55rem;
  color: var(--mc-text-muted);
  border-radius: 0;
  transition: background 0.1s;
}
.tab-btn:hover { background: #5D5D5D; color: var(--mc-text); }
.tab-btn.active {
  background: var(--mc-green-dark);
  border-color: var(--mc-green);
  color: #fff;
  box-shadow:
    inset  2px  2px 0 var(--mc-green-light),
    inset -2px -2px 0 var(--mc-green-darker);
}
.tab-content { display: none; }
.tab-content.active { display: block; }

.leaderboard-list { display: flex; flex-direction: column; gap: 8px; }
.leaderboard-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  background: var(--mc-surface);
  border: 2px solid var(--mc-border-mid);
  box-shadow:
    inset  2px  2px 0 var(--mc-border-hi),
    inset -2px -2px 0 var(--mc-border-lo);
  border-radius: 0;
}
.lb-rank { font-size: 1rem; min-width: 30px; text-align: center; color: var(--mc-text-muted); }
.lb-rank.gold   { color: var(--mc-gold); text-shadow: 1px 1px #000; }
.lb-rank.silver { color: #C0C0C0; text-shadow: 1px 1px #000; }
.lb-rank.bronze { color: #CD7F32; text-shadow: 1px 1px #000; }
.lb-user { flex: 1; }
.lb-name  { font-size: 0.6rem; color: var(--mc-text); text-shadow: 1px 1px #000; }
.lb-level { font-size: 0.48rem; color: var(--mc-text-dim); margin-top: 3px; }
.lb-xp { font-size: 0.65rem; color: var(--mc-xp); text-shadow: 1px 1px #000; text-align: right; }
.lb-xp-label { font-size: 0.45rem; color: var(--mc-text-dim); }

.my-scores-list { display: flex; flex-direction: column; gap: 8px; }
.score-item {
  padding: 12px 16px;
  background: var(--mc-surface);
  border: 2px solid var(--mc-border-mid);
  box-shadow: inset 2px 2px 0 var(--mc-border-hi), inset -2px -2px 0 var(--mc-border-lo);
  display: flex;
  gap: 12px;
  align-items: center;
  border-radius: 0;
}
.score-item-mode   { font-size: 0.55rem; color: var(--mc-green-light); flex: 1; }
.score-item-result { font-size: 0.5rem; color: var(--mc-text-muted); }
.score-item-xp     { font-size: 0.55rem; color: var(--mc-xp); text-shadow: 1px 1px #000; }
.scores-empty { color: var(--mc-text-dim); font-size: 0.55rem; text-align: center; padding: 32px; }

/* ═══════════════════════════════════════════ Badges View */
.badges-subtitle { color: var(--mc-text-muted); font-size: 0.55rem; margin-bottom: 20px; }
.badges-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); gap: 12px; }
.badge-item {
  padding: 14px;
  background: var(--mc-surface);
  border: 2px solid var(--mc-border-mid);
  box-shadow:
    inset  2px  2px 0 var(--mc-border-hi),
    inset -2px -2px 0 var(--mc-border-lo);
  text-align: center;
  border-radius: 0;
  transition: border-color 0.1s;
}
.badge-item.earned {
  background: var(--mc-green-darker);
  border-color: var(--mc-green);
  box-shadow:
    inset  2px  2px 0 var(--mc-green-light),
    inset -2px -2px 0 var(--mc-green-darker);
}
.badge-item.locked { opacity: 0.35; }
.badge-icon     { font-size: 2rem; margin-bottom: 8px; }
.badge-name     { font-size: 0.55rem; color: var(--mc-green-light); margin-bottom: 4px; text-shadow: 1px 1px #000; }
.badge-desc     { font-size: 0.45rem; color: var(--mc-text-muted); margin-bottom: 6px; line-height: 1.6; }
.badge-xp-reward  { font-size: 0.5rem; color: var(--mc-xp); }
.badge-earned-at  { font-size: 0.42rem; color: var(--mc-text-dim); margin-top: 4px; }

/* ════════════════════════════════════════ Badge Popup */
.badge-popup {
  position: fixed;
  top: 72px;
  right: 16px;
  z-index: 1000;
  animation: badge-slide-in 0.3s steps(6);
}
@keyframes badge-slide-in {
  from { transform: translateX(120%); opacity: 0; }
  to   { transform: translateX(0);    opacity: 1; }
}
.badge-popup.hiding { animation: badge-slide-out 0.25s steps(4) forwards; }
@keyframes badge-slide-out {
  from { transform: translateX(0);    opacity: 1; }
  to   { transform: translateX(120%); opacity: 0; }
}
.badge-popup-inner {
  background: var(--mc-surface);
  border: 2px solid var(--mc-green);
  box-shadow:
    inset  2px  2px 0 var(--mc-green-light),
    inset -2px -2px 0 var(--mc-green-darker),
    4px 4px 0 rgba(0,0,0,0.6);
  padding: 14px 18px;
  max-width: 240px;
  text-align: center;
  border-radius: 0;
}
.badge-popup-icon  { font-size: 2.2rem; }
.badge-popup-title {
  font-size: 0.45rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--mc-green);
  margin-top: 4px;
  text-shadow: 1px 1px var(--mc-green-darker);
}
.badge-popup-name { font-size: 0.65rem; color: var(--mc-text); text-shadow: 2px 2px #000; margin: 6px 0 4px; }
.badge-popup-desc { font-size: 0.5rem; color: var(--mc-text-muted); line-height: 1.6; }
.badge-popup-xp   { font-size: 0.55rem; color: var(--mc-xp); text-shadow: 1px 1px #000; margin-top: 4px; }

/* ════════════════════════════════════════ XP Float */
.xp-float {
  position: fixed;
  pointer-events: none;
  font-family: var(--font-pixel);
  font-size: 0.75rem;
  color: var(--mc-xp);
  text-shadow: 2px 2px #000;
  animation: xp-pop 1.2s steps(12) forwards;
  z-index: 2000;
}
@keyframes xp-pop {
  0%   { opacity: 1; transform: translateY(0); }
  60%  { opacity: 1; transform: translateY(-40px); }
  100% { opacity: 0; transform: translateY(-80px); }
}

/* ════════════════════════════════════ Spinner */
@keyframes spin { to { transform: rotate(360deg); } }
.spinner {
  display: inline-block;
  width: 16px;
  height: 16px;
  border: 3px solid var(--mc-border-mid);
  border-top-color: var(--mc-green);
  animation: spin 0.8s steps(8) infinite;
}

/* ════════════════════════════════════ Section headings */
h2 {
  font-size: 0.85rem;
  color: var(--mc-green);
  text-shadow: 2px 2px var(--mc-green-darker);
  margin-bottom: 16px;
}
h3 {
  font-size: 0.65rem;
  color: var(--mc-text);
  text-shadow: 1px 1px var(--mc-text-shadow);
  margin-bottom: 12px;
}

/* ════════════════════════════════════ Responsive */
@media (max-width: 600px) {
  .navbar { padding: 0 10px; gap: 6px; }
  .nav-links .nav-btn { padding: 5px 7px; font-size: 0.48rem; }
  .nav-xp-track { width: 50px; }
  .nav-xp-text  { display: none; }
  .stats-row    { gap: 6px; }
  .stat-card    { padding: 8px 10px; min-width: 68px; }
  .quiz-container { padding: 0 10px; }
  .mc-choices { grid-template-columns: 1fr; }
  .badges-grid { grid-template-columns: repeat(auto-fill, minmax(120px, 1fr)); }
  .exercise-type-grid { grid-template-columns: 1fr; }
  .logo h1 { font-size: 1.2rem; }
}

/* ═══════════════════════════════════════════ Level-Up Overlay */
@keyframes levelup-pop {
  0%   { transform: scale(0.4); opacity: 0; }
  60%  { transform: scale(1.08); opacity: 1; }
  80%  { transform: scale(0.97); }
  100% { transform: scale(1); }
}
@keyframes levelup-flicker {
  0%, 100% { opacity: 1; }
  45%       { opacity: 1; }
  50%       { opacity: 0.4; }
  55%       { opacity: 1; }
  70%       { opacity: 0.7; }
  75%       { opacity: 1; }
}
@keyframes levelup-number-in {
  0%   { transform: scale(0) rotate(-15deg); opacity: 0; }
  70%  { transform: scale(1.15) rotate(3deg); opacity: 1; }
  100% { transform: scale(1) rotate(0deg); }
}
@keyframes particle-rise {
  0%   { transform: translateY(0) scale(1); opacity: 1; }
  100% { transform: translateY(-120px) scale(0.3); opacity: 0; }
}
@keyframes levelup-fadeout {
  to { opacity: 0; }
}

.levelup-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.82);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 500;
  cursor: pointer;
}
.levelup-overlay.levelup-fadeout {
  animation: levelup-fadeout 0.6s forwards;
}
.levelup-box {
  position: relative;
  text-align: center;
  padding: 40px 48px;
  background: var(--mc-bg2);
  border: 4px solid var(--mc-green);
  box-shadow:
    0 0 0 2px var(--mc-green-darker),
    8px 8px 0 #000,
    0 0 40px rgba(124,181,66,0.35);
  animation: levelup-pop 0.5s cubic-bezier(.36,.07,.19,.97) both;
}
.levelup-particles {
  position: absolute;
  inset: 0;
  pointer-events: none;
  overflow: hidden;
}
.lup-particle {
  position: absolute;
  bottom: 20%;
  width: 8px;
  height: 8px;
  image-rendering: pixelated;
  animation: particle-rise linear both;
}
.levelup-label {
  font-size: 0.6rem;
  color: var(--mc-green-light);
  text-shadow: 0 0 12px var(--mc-green), 1px 1px #000;
  letter-spacing: 0.15em;
  animation: levelup-flicker 2s ease-in-out infinite;
  margin-bottom: 12px;
}
.levelup-number {
  font-size: 5rem;
  color: #FFCA28;
  text-shadow: 0 0 20px #FFCA28, 3px 3px #000;
  line-height: 1;
  animation: levelup-number-in 0.6s 0.15s cubic-bezier(.36,.07,.19,.97) both;
  margin-bottom: 8px;
}
.levelup-name {
  font-size: 1rem;
  color: var(--mc-text);
  text-shadow: 2px 2px #000;
  margin-bottom: 20px;
  animation: levelup-pop 0.5s 0.3s both;
}
.levelup-paps {
  font-size: 0.55rem;
  color: #f9d849;
  font-family: var(--font-pixel);
  text-align: center;
  margin-top: 0.3rem;
  animation: levelup-pop 0.5s 0.8s both;
}
.levelup-hint {
  font-size: 0.45rem;
  color: var(--mc-text-dim);
  animation: levelup-flicker 1.5s 1s ease-in-out infinite;
}

/* ═══════════════════════════════════════════ Player Stats Modal */
.player-modal {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.7);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 200;
}
.player-modal-box {
  background: var(--mc-bg2);
  border: 2px solid var(--mc-green-dark);
  box-shadow: 4px 4px 0 #000;
  width: 100%;
  max-width: 420px;
  margin: 16px;
}
.player-modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 12px;
  background: var(--mc-green-dark);
  font-size: 0.6rem;
  color: var(--mc-text);
  text-shadow: 1px 1px #000;
}
.player-modal-body { padding: 16px; }
.player-stats-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
}
.ps-item {
  background: var(--mc-surface);
  border: 2px solid var(--mc-border-mid);
  box-shadow: inset 1px 1px 0 var(--mc-border-lo);
  padding: 10px 12px;
  text-align: center;
}
.ps-val {
  font-size: 0.75rem;
  color: var(--mc-green-light);
  text-shadow: 1px 1px #000;
  margin-bottom: 4px;
}
.ps-lbl {
  font-size: 0.45rem;
  color: var(--mc-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}