/* QMate - Stile globale */
* { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --purple: #b026b0;
  --lime: #b8e000;
  --bg: #0a0a0a;
  --bg2: #141414;
  --bg3: #1e1e1e;
  --border: rgba(255,255,255,0.1);
  --text: #f0f0f0;
  --text2: #999;
  --text3: #555;
  --radius: 10px;
  --radius-lg: 14px;
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

.page {
  max-width: 440px;
  margin: 0 auto;
  padding: 1.5rem 1.25rem 3rem;
}

/* Header */
.header {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 1rem;
}
.logo-q {
  width: 36px; height: 36px;
  border-radius: 50%;
  background: var(--purple);
  display: flex; align-items: center; justify-content: center;
  font-size: 18px; font-weight: 600; color: #fff;
}
.logo-text {
  font-size: 22px; font-weight: 600;
  color: var(--lime);
  letter-spacing: -0.5px;
}

/* Badges */
.badge-row { display: flex; gap: 8px; margin-bottom: 1.5rem; flex-wrap: wrap; }
.badge {
  font-size: 11px; padding: 3px 10px;
  border-radius: 20px; font-weight: 600;
}
.badge-num { background: var(--purple); color: #fff; }
.badge-type {
  background: var(--bg3); color: var(--text2);
  border: 0.5px solid var(--border);
}

/* Progress dots */
.progress-row {
  display: flex; gap: 6px;
  align-items: center; margin-bottom: 1.75rem;
}
.prog-dot { width: 28px; height: 5px; border-radius: 3px; }
.pd-active { background: var(--purple); }
.pd-done   { background: var(--lime); }
.pd-inactive { background: var(--bg3); border: 0.5px solid var(--border); }
.prog-lbl { font-size: 11px; color: var(--text3); margin-left: 4px; }

/* Cards */
.card {
  background: var(--bg2);
  border: 0.5px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.25rem;
  margin-bottom: 1rem;
}
.card-title {
  font-size: 11px; color: var(--text3);
  text-transform: uppercase; letter-spacing: 0.07em;
  margin-bottom: 8px;
}

/* Code block */
.code-block {
  background: #0d0d0d;
  border: 0.5px solid var(--border);
  border-radius: var(--radius);
  padding: 1rem;
  font-family: 'Courier New', monospace;
  font-size: 13px; line-height: 1.8;
  overflow-x: auto; white-space: pre;
  margin-bottom: 1rem;
  position: relative;
}
.lang-badge {
  position: absolute; top: 8px; right: 10px;
  font-size: 10px; color: var(--text3);
  text-transform: uppercase; letter-spacing: 0.08em;
  font-family: sans-serif;
}
.kw  { color: var(--purple); }
.str { color: var(--lime); }
.num { color: var(--lime); }
.cm  { color: var(--text3); font-style: italic; }
.tag { color: var(--lime); }
.attr{ color: var(--purple); }

/* Buttons */
.btn {
  width: 100%; padding: 14px;
  background: var(--purple); color: #fff;
  border: none; border-radius: var(--radius);
  font-size: 15px; font-weight: 600;
  cursor: pointer; font-family: inherit;
  transition: opacity 0.2s;
  margin-bottom: 0.5rem;
}
.btn:disabled { opacity: 0.3; cursor: not-allowed; }
.btn:not(:disabled):hover { opacity: 0.85; }
.btn-ghost {
  width: 100%; padding: 12px;
  background: none; color: var(--text2);
  border: 0.5px solid var(--border);
  border-radius: var(--radius);
  font-size: 14px; cursor: pointer;
  font-family: inherit;
  transition: border-color 0.15s;
}
.btn-ghost:hover { border-color: rgba(255,255,255,0.3); }

/* Options (quiz) */
.options { display: flex; flex-direction: column; gap: 8px; margin-bottom: 1.25rem; }
.option {
  display: flex; align-items: center; gap: 12px;
  border: 0.5px solid var(--border);
  border-radius: var(--radius);
  padding: 12px 14px; cursor: pointer;
  transition: border-color 0.15s, background 0.15s;
}
.option:hover { border-color: rgba(255,255,255,0.25); background: var(--bg3); }
.option.selected { border-color: var(--purple); background: var(--bg3); }
.option.correct  { border-color: #3B6D11; background: #0d1a09; }
.option.wrong    { border-color: #A32D2D; background: #1a0909; }
.option-letter {
  width: 26px; height: 26px; border-radius: 50%;
  border: 0.5px solid var(--border);
  display: flex; align-items: center; justify-content: center;
  font-size: 11px; color: var(--text2); flex-shrink: 0;
}
.option.selected .option-letter { background: var(--purple); border-color: var(--purple); color: #fff; }
.option.correct  .option-letter { background: #3B6D11; border-color: #3B6D11; color: #fff; }
.option.wrong    .option-letter { background: #A32D2D; border-color: #A32D2D; color: #fff; }
.option-text { font-size: 14px; color: var(--text); }

/* Feedback */
.feedback { font-size: 13px; min-height: 18px; margin-bottom: 1rem; }
.feedback.ok { color: #639922; }
.feedback.ko { color: #E24B4A; }

/* Secret code reveal */
.secret-box {
  display: flex; align-items: center; gap: 12px;
  background: var(--bg3);
  border: 0.5px solid var(--purple);
  border-radius: var(--radius); padding: 12px 14px;
  margin-bottom: 1rem;
}
.secret-label { font-size: 11px; color: var(--text3); text-transform: uppercase; letter-spacing: 0.07em; }
.secret-value {
  font-size: 22px; letter-spacing: 0.35em;
  color: var(--purple); font-weight: 700;
  font-family: 'Courier New', monospace;
}
.copy-btn {
  margin-left: auto; font-size: 11px; color: var(--text3);
  background: none; border: 0.5px solid var(--border);
  border-radius: 5px; padding: 4px 9px; cursor: pointer;
  font-family: inherit;
}
.copy-btn:hover { color: var(--text); }

/* Animations */
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: translateY(0); }
}
.screen { display: none; }
.screen.active { display: block; animation: fadeIn 0.35s ease; }

/* Unlock page inputs */
.slot {
  display: flex; align-items: center; gap: 12px;
  background: var(--bg2); border: 0.5px solid var(--border);
  border-radius: var(--radius); padding: 10px 14px;
  transition: border-color 0.2s; margin-bottom: 8px;
}
.slot.filled { border-color: var(--purple); }
.slot.error  { border-color: #E24B4A; }
.slot-num {
  width: 24px; height: 24px; border-radius: 50%;
  background: var(--bg3); border: 0.5px solid var(--border);
  display: flex; align-items: center; justify-content: center;
  font-size: 11px; color: var(--text3); flex-shrink: 0;
}
.slot.filled .slot-num { background: var(--purple); border-color: var(--purple); color: #fff; }
.slot-input {
  flex: 1; background: none; border: none; outline: none;
  font-size: 16px; letter-spacing: 0.25em;
  font-family: 'Courier New', monospace; color: var(--text);
  text-transform: uppercase;
}
.slot-input::placeholder {
  color: var(--text3); letter-spacing: 0.05em;
  font-size: 13px; text-transform: none;
  font-family: inherit;
}
.slot-check { font-size: 14px; color: var(--purple); opacity: 0; transition: opacity 0.2s; }
.slot.filled .slot-check { opacity: 1; }

/* Progress bar (unlock) */
.prog-bar-row { display: flex; align-items: center; gap: 10px; margin-bottom: 1.5rem; }
.prog-track {
  flex: 1; height: 4px;
  background: var(--bg3); border-radius: 2px; overflow: hidden;
}
.prog-fill {
  height: 100%; background: var(--purple);
  border-radius: 2px; transition: width 0.4s ease; width: 0%;
}
.prog-bar-lbl { font-size: 12px; color: var(--text3); min-width: 36px; text-align: right; }

/* Reward */
.reward-top {
  display: flex; align-items: center; gap: 12px; margin-bottom: 1rem;
}
.reward-icon {
  width: 40px; height: 40px; border-radius: 50%;
  background: var(--purple);
  display: flex; align-items: center; justify-content: center;
  font-size: 18px; color: #fff; flex-shrink: 0;
}
.reward-title { font-size: 16px; font-weight: 600; color: var(--text); }
.reward-sub   { font-size: 12px; color: var(--text2); margin-top: 2px; }