/* Экран урока, тест на уровень и список уроков по уровням */

/* ---------------- верхняя панель урока ---------------- */
.lesson-top { display: flex; align-items: center; gap: 10px; margin-bottom: 14px; }
.lesson-top .progress-track { flex: 1; }
.back-btn.lesson-close:not(#_) {
  flex: 0 0 36px; width: 36px; height: 36px; padding: 0; margin: 0; border-radius: 50%;
  display: inline-flex; align-items: center; justify-content: center;
  background: var(--card); border: 1px solid var(--line); color: var(--ink); font-size: 15px; text-decoration: none;
}
.lesson-count { font-size: 13px; font-weight: 700; color: var(--ink-soft); min-width: 34px; text-align: center; }
.lesson-report {
  flex: 0 0 32px; height: 32px; border-radius: 50%; border: 0; background: transparent; cursor: pointer;
  font-size: 15px; opacity: .55;
}
.lesson-report:hover, .lesson-report:focus-visible { opacity: 1; }

/* ---------------- варианты ответа с номерами ---------------- */
.quiz-option { display: flex; align-items: center; gap: 12px; text-align: left; }
.quiz-option .opt-num {
  flex: 0 0 26px; height: 26px; border-radius: 8px; border: 1px solid var(--line);
  display: inline-flex; align-items: center; justify-content: center;
  font-size: 12px; font-weight: 800; color: var(--ink-soft); background: var(--paper);
}
.quiz-option.correct .opt-num { border-color: currentColor; color: inherit; background: transparent; }
.quiz-option.wrong .opt-num { border-color: currentColor; color: inherit; background: transparent; }
.quiz-option .opt-text { flex: 1; min-width: 0; }
@media (hover: none) { .quiz-option .opt-num { opacity: .7; } }

/* ---------------- нижняя панель: результат + кнопка ---------------- */
.lesson-bottom {
  position: sticky; bottom: 0; z-index: 5;
  margin: 18px -20px 0; padding: 12px 20px calc(12px + env(safe-area-inset-bottom));
  background: color-mix(in srgb, var(--paper) 94%, transparent);
  -webkit-backdrop-filter: blur(6px); backdrop-filter: blur(6px);
  border-top: 1px solid var(--line);
}
.lesson-bottom #answer-feedback .feedback { margin: 0 0 10px; }
.lesson-bottom .next-btn { margin-top: 0; }
.lesson-body { min-height: 46vh; }

/* ---------------- знакомство с новым словом (новичкам) ---------------- */
.intro-card { text-align: center; }
.intro-divider { height: 1px; background: var(--line); margin: 16px 24px 12px; }
.intro-translation { font-size: 24px; font-weight: 800; color: var(--coral); }
.intro-tip { text-align: center; font-size: 13px; color: var(--ink-soft); margin: 12px 0 0; }
.transcription.tr-hidden {
  background: none; border: 1px dashed var(--line); border-radius: 8px; padding: 3px 10px;
  color: var(--ink-soft); font-size: 12px; cursor: pointer; font-family: inherit;
}

/* ---------------- уровни в списке уроков ---------------- */
.level-banner {
  display: flex; align-items: center; gap: 12px; margin: 0 0 14px; padding: 14px;
  background: var(--card); border: 1px solid color-mix(in srgb, var(--coral) 40%, var(--line)); border-radius: var(--radius);
}
.level-banner .lb-icon { font-size: 30px; }
.level-banner b { display: block; font-size: 15px; }
.level-banner small { display: block; font-size: 12px; color: var(--ink-soft); margin-top: 2px; }
.level-banner .lb-actions { display: flex; flex-direction: column; gap: 6px; margin-left: auto; }
.level-chip {
  display: inline-flex; align-items: center; gap: 6px; font-size: 13px; margin: 0 0 12px; color: var(--ink-soft);
}
.level-chip b { color: var(--ink); }
.level-chip button { background: none; border: 0; color: var(--coral); font: inherit; font-size: 13px; cursor: pointer; padding: 0; text-decoration: underline; }
.level-section { margin: 4px 0 14px; }
.level-head {
  display: grid; grid-template-columns: 1fr auto; column-gap: 10px; row-gap: 2px; align-items: center;
  width: 100%; background: none; border: 0; padding: 6px 2px 8px;
  font: inherit; color: var(--ink); cursor: pointer; text-align: left;
}
.level-head .lh-title { font-weight: 800; font-size: 14px; grid-column: 1; }
.level-head .lh-meta { font-size: 12px; color: var(--ink-soft); grid-column: 1; grid-row: 2; }
.level-head .lh-toggle { grid-column: 2; grid-row: 1 / span 2; font-size: 12px; color: var(--ink-soft); white-space: nowrap;
  border: 1px solid var(--line); border-radius: 999px; padding: 3px 9px; background: var(--card); }
.lesson-row.recommended { border-color: var(--coral); box-shadow: 0 0 0 1px var(--coral) inset; }
.lr-tag { display: inline-block; font-size: 11px; font-weight: 800; color: var(--coral); margin-left: 6px; }

/* ---------------- тест на уровень ---------------- */
.pl-ladder { display: flex; gap: 6px; justify-content: center; margin: 4px 0 14px; }
.pl-step {
  flex: 1; max-width: 120px; text-align: center; font-size: 12px; padding: 6px 4px; border-radius: 10px;
  border: 1px solid var(--line); color: var(--ink-soft); background: var(--card); transition: all .25s ease;
}
.pl-step.on { border-color: var(--coral); color: var(--ink); font-weight: 800; transform: translateY(-2px); }
.pl-prompt-label { text-align: center; font-size: 12px; color: var(--ink-soft); margin-bottom: 4px; }
.pl-result-levels { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; margin: 14px 0 4px; }
.pl-result-levels div { border: 1px solid var(--line); border-radius: 12px; padding: 8px 4px; text-align: center; font-size: 12px; color: var(--ink-soft); }
.pl-result-levels div b { display: block; font-size: 16px; color: var(--ink); }
.pl-result-levels div.mine { border-color: var(--coral); background: color-mix(in srgb, var(--coral) 10%, var(--card)); }
.pl-choose { display: flex; flex-direction: column; gap: 8px; }
.pl-choose button { text-align: left; }
.pl-dontknow { display: block; margin: 12px auto 0; background: none; border: 0; color: var(--ink-soft); font: inherit; font-size: 13px; text-decoration: underline; cursor: pointer; }

/* калибровка перед уроками */
.calibration {
  text-align: center; padding: 20px 16px 16px; margin: 0 0 16px;
  background: var(--card); border: 1px solid color-mix(in srgb, var(--coral) 45%, var(--line)); border-radius: var(--radius);
}
.calibration .cal-icon { font-size: 44px; line-height: 1; }
.calibration h3 { margin: 8px 0 6px; font-size: 18px; }
.calibration p { margin: 0 0 12px; font-size: 14px; color: var(--ink-soft); }
.calibration .cal-alt { display: flex; gap: 8px; justify-content: center; flex-wrap: wrap; margin-top: 10px; }
.lesson-row.locked .lr-num { background: var(--line); color: var(--ink-soft); }

/* ---------------- теория ---------------- */
.theory-card {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 18px 18px 8px; line-height: 1.55; font-size: 15px;
}
.theory-card h2, .theory-modal h2 { margin: 2px 0 10px; font-size: 21px; }
.theory-card h3, .theory-modal h3 { margin: 18px 0 6px; font-size: 15px; color: var(--indigo); }
.theory-card p, .theory-modal p { margin: 0 0 10px; }
.theory-card ul, .theory-modal ul { margin: 0 0 10px; padding-left: 20px; }
.theory-card li, .theory-modal li { margin: 3px 0; }
.th-eyebrow { font-size: 12px; font-weight: 800; color: var(--coral); }
.th-example {
  display: flex; flex-direction: column; gap: 2px; margin: 8px 0; padding: 10px 12px;
  border-left: 3px solid var(--coral); background: color-mix(in srgb, var(--coral) 7%, var(--card)); border-radius: 0 10px 10px 0;
}
.th-ex-src { font-weight: 700; }
.th-ex-tr { font-size: 13px; color: var(--ink-soft); }
.th-ar { font-size: 1.25em; line-height: 1.4; unicode-bidi: isolate; }
.th-wrong { color: #c0392b; text-decoration-thickness: 2px; }
.theory-modal { max-height: 85vh; overflow-y: auto; text-align: left; line-height: 1.55; }

/* вкладки уроков: 4 кнопки в одну строку */
.lessons-tabs .lessons-tab { white-space: nowrap; padding-left: 10px; padding-right: 10px; font-size: 14px; min-width: 0; }
@media (max-width: 420px) { .lessons-tabs .lessons-tab { font-size: 13px; padding-left: 8px; padding-right: 8px; } }