/* ==========================================================================
   Base global — carregado DEPOIS do Bootstrap 5.3 em todas as páginas.

   Estratégia:
   - Bootstrap fornece reboot, grid, utilitários e componentes (btn, form-*,
     progress, breadcrumb, badge, input-group).
   - Este arquivo mapeia as variáveis do Bootstrap (--bs-*) para o design
     system do app e define variantes próprias (btn-accent, btn-soft…).
   - Mobile-first: estilos base = celular; telas maiores via min-width,
     usando os breakpoints do Bootstrap (sm 576 · md 768 · lg 992 · xl 1200).
   - Atenção: não usar utilitários d-* do Bootstrap em elementos que o JS
     esconde com style.display (os utilitários usam !important).
   ========================================================================== */

:root,
[data-bs-theme="dark"] {
  /* Design system — dark mode */
  --bg: #0f1419;        /* fundo principal */
  --card: #1a2027;      /* fundo de cards */
  --card2: #212d33;     /* cards/inputs secundários */
  --border: #2d3742;    /* bordas */
  --text: #e4e9ef;      /* texto principal */
  --muted: #8b97a6;     /* texto secundário */
  --green: #2ecc71;     /* sucesso */
  --red: #e74c3c;       /* erro */
  --blue: #3498db;      /* destaque/info */
  --amber: #f39c12;     /* alerta */
  --purple: #9b59b6;    /* categoria */

  /* Aliases semânticos (mapeiam o design system para os nomes usados no app) */
  --ink: var(--text);
  --accent: var(--green);
  --accent-ink: var(--green);
  --good: var(--green);
  --bad: var(--red);
  --good-bg: rgba(46, 204, 113, .15);
  --bad-bg: rgba(231, 76, 60, .15);
  --line: var(--border);
  --hover: #2a3741;

  --radius: 10px;
  --mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, "Liberation Mono", monospace;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;

  /* Mapeamento para o Bootstrap */
  --bs-body-font-family: var(--sans);
  --bs-font-sans-serif: var(--sans);
  --bs-font-monospace: var(--mono);
  --bs-body-bg: var(--bg);
  --bs-body-bg-rgb: 15, 20, 25;
  --bs-body-color: var(--text);
  --bs-body-color-rgb: 228, 233, 239;
  --bs-emphasis-color: #fff;
  --bs-heading-color: var(--text);
  --bs-secondary-color: var(--muted);
  --bs-secondary-bg: var(--card);
  --bs-tertiary-bg: var(--card2);
  --bs-border-color: var(--border);
  --bs-border-radius: 8px;
  --bs-border-radius-lg: var(--radius);
  --bs-link-color: var(--blue);
  --bs-link-color-rgb: 52, 152, 219;
  --bs-link-hover-color: #5dade2;
  --bs-link-hover-color-rgb: 93, 173, 226;
  --bs-primary: var(--green);
  --bs-primary-rgb: 46, 204, 113;
  --bs-success: var(--green);
  --bs-success-rgb: 46, 204, 113;
  --bs-danger: var(--red);
  --bs-danger-rgb: 231, 76, 60;
  --bs-warning: var(--amber);
  --bs-warning-rgb: 243, 156, 18;
  --bs-info: var(--blue);
  --bs-info-rgb: 52, 152, 219;
  --bs-focus-ring-color: rgba(46, 204, 113, .35);
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--sans);
}

::selection { background: rgba(52, 152, 219, .3); }

.muted { color: var(--muted); }
.hidden { display: none; }

kbd {
  font-family: var(--mono);
  font-size: 11px;
  background: var(--card2);
  border: 1px solid var(--border);
  border-bottom-width: 2px;
  border-radius: 4px;
  padding: 1px 6px;
  color: var(--text);
  box-shadow: none;
}

/* ---------- Botões (API de variáveis do .btn do Bootstrap) ---------- */
.btn {
  --bs-btn-font-size: .875rem;
  --bs-btn-font-weight: 500;
  --bs-btn-padding-x: 1rem;
  --bs-btn-padding-y: .5rem;
  --bs-btn-border-radius: 8px;
  --bs-btn-focus-box-shadow: 0 0 0 .2rem rgba(46, 204, 113, .35);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  min-height: 44px; /* área de toque confortável no celular */
  transition: transform .1s, background-color .2s, border-color .2s, color .2s;
}
.btn:active { transform: scale(.97); }
.btn-sm {
  --bs-btn-padding-x: .75rem;
  --bs-btn-padding-y: .3rem;
  --bs-btn-font-size: .8125rem;
  min-height: 36px;
}

.btn-accent {
  --bs-btn-font-weight: 600;
  --bs-btn-color: #0f1419;
  --bs-btn-bg: var(--green);
  --bs-btn-border-color: var(--green);
  --bs-btn-hover-color: #0f1419;
  --bs-btn-hover-bg: #27ae60;
  --bs-btn-hover-border-color: #27ae60;
  --bs-btn-active-color: #0f1419;
  --bs-btn-active-bg: #239b56;
  --bs-btn-active-border-color: #239b56;
  --bs-btn-disabled-color: #0f1419;
  --bs-btn-disabled-bg: var(--green);
  --bs-btn-disabled-border-color: var(--green);
}
.btn-soft {
  --bs-btn-color: var(--text);
  --bs-btn-bg: var(--card2);
  --bs-btn-border-color: var(--border);
  --bs-btn-hover-color: var(--text);
  --bs-btn-hover-bg: var(--hover);
  --bs-btn-hover-border-color: #3a4550;
  --bs-btn-active-color: var(--text);
  --bs-btn-active-bg: #2f3d48;
  --bs-btn-active-border-color: #3a4550;
  --bs-btn-disabled-color: var(--text);
  --bs-btn-disabled-bg: var(--card2);
  --bs-btn-disabled-border-color: var(--border);
}
.btn-ghost {
  --bs-btn-color: var(--muted);
  --bs-btn-bg: transparent;
  --bs-btn-border-color: var(--border);
  --bs-btn-hover-color: var(--text);
  --bs-btn-hover-bg: var(--card2);
  --bs-btn-hover-border-color: var(--border);
  --bs-btn-active-color: var(--text);
  --bs-btn-active-bg: var(--card2);
  --bs-btn-active-border-color: var(--border);
}
.btn-danger-soft {
  --bs-btn-font-weight: 600;
  --bs-btn-color: var(--red);
  --bs-btn-bg: var(--bad-bg);
  --bs-btn-border-color: rgba(231, 76, 60, .4);
  --bs-btn-hover-color: var(--red);
  --bs-btn-hover-bg: rgba(231, 76, 60, .25);
  --bs-btn-hover-border-color: rgba(231, 76, 60, .6);
  --bs-btn-active-color: var(--red);
  --bs-btn-active-bg: rgba(231, 76, 60, .3);
  --bs-btn-active-border-color: var(--red);
}
.btn-warn-soft {
  --bs-btn-color: var(--amber);
  --bs-btn-bg: rgba(243, 156, 18, .12);
  --bs-btn-border-color: rgba(243, 156, 18, .4);
  --bs-btn-hover-color: var(--amber);
  --bs-btn-hover-bg: rgba(243, 156, 18, .2);
  --bs-btn-hover-border-color: rgba(243, 156, 18, .6);
  --bs-btn-active-color: var(--amber);
  --bs-btn-active-bg: rgba(243, 156, 18, .25);
  --bs-btn-active-border-color: var(--amber);
}
.btn-info-soft {
  --bs-btn-font-weight: 600;
  --bs-btn-color: var(--blue);
  --bs-btn-bg: rgba(52, 152, 219, .18);
  --bs-btn-border-color: var(--blue);
  --bs-btn-hover-color: var(--blue);
  --bs-btn-hover-bg: rgba(52, 152, 219, .3);
  --bs-btn-hover-border-color: var(--blue);
  --bs-btn-active-color: var(--blue);
  --bs-btn-active-bg: rgba(52, 152, 219, .35);
  --bs-btn-active-border-color: var(--blue);
}

/* ---------- Formulários ---------- */
.form-control,
.form-select {
  background-color: var(--card2);
  border-color: var(--border);
  color: var(--text);
  border-radius: 8px;
  font-size: 1rem; /* 16px no celular evita o zoom automático do iOS */
}
.form-control::placeholder { color: var(--muted); opacity: 1; }
.form-control:focus,
.form-select:focus {
  background-color: var(--card2);
  color: var(--text);
  border-color: var(--green);
  box-shadow: 0 0 0 .2rem rgba(46, 204, 113, .25);
}
.input-group-text {
  background-color: var(--card);
  border-color: var(--border);
  color: var(--muted);
}

.form-check-input {
  background-color: var(--card2);
  border-color: var(--border);
  cursor: pointer;
}
.form-check-input:checked { background-color: var(--green); border-color: var(--green); }
.form-check-input:focus { border-color: var(--green); box-shadow: 0 0 0 .2rem rgba(46, 204, 113, .25); }
.form-switch .form-check-input:focus:not(:checked) {
  --bs-form-switch-bg: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='-4 -4 8 8'%3e%3ccircle r='3' fill='%232ecc71'/%3e%3c/svg%3e");
}
.form-check-label { cursor: pointer; }

.form-range::-webkit-slider-thumb { background-color: var(--green); }
.form-range::-webkit-slider-thumb:active { background-color: #27ae60; }
.form-range::-webkit-slider-runnable-track { background-color: var(--card2); }
.form-range::-moz-range-thumb { background-color: var(--green); }
.form-range::-moz-range-thumb:active { background-color: #27ae60; }
.form-range::-moz-range-track { background-color: var(--card2); }
.form-range:focus::-webkit-slider-thumb { box-shadow: 0 0 0 1px var(--bg), 0 0 0 .2rem rgba(46, 204, 113, .25); }
.form-range:focus::-moz-range-thumb { box-shadow: 0 0 0 1px var(--bg), 0 0 0 .2rem rgba(46, 204, 113, .25); }

/* ---------- Progresso (componente .progress do Bootstrap) ---------- */
.progress {
  --bs-progress-height: 6px;
  --bs-progress-bg: var(--card2);
  --bs-progress-border-radius: 999px;
  --bs-progress-bar-bg: var(--green);
  --bs-progress-bar-transition: width .3s ease;
}
.progress-bar { width: 0; border-radius: 999px; }
#progress-label { font-size: 12px; color: var(--muted); white-space: nowrap; font-family: var(--mono); }

/* ---------- Topbar (shadowing) ---------- */
.topbar {
  border-bottom: 1px solid var(--border);
  background: var(--card);
}
.crumbs .breadcrumb {
  --bs-breadcrumb-divider: '›';
  --bs-breadcrumb-divider-color: var(--muted);
  --bs-breadcrumb-item-active-color: var(--text);
  --bs-breadcrumb-font-size: 14px;
  flex-wrap: wrap;
}
.crumbs .breadcrumb-item { color: var(--muted); }
.crumbs a { color: var(--muted); text-decoration: none; }
.crumbs a:hover { color: var(--text); }
#crumb-title { color: var(--text); font-weight: 600; }

.pill {
  --bs-badge-font-size: 12px;
  --bs-badge-font-weight: 600;
  --bs-badge-padding-x: 10px;
  --bs-badge-padding-y: 5px;
  background: var(--good-bg);
  color: var(--green);
}
.pill-muted { background: var(--card2); color: var(--muted); }

/* ---------- Player / stage ---------- */
.stage {
  background: linear-gradient(135deg, #1a2027, #212d33);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  min-height: 140px;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}
.stage-inner { width: 100%; padding: 16px; text-align: center; }
.progress-wrap { display: flex; align-items: center; gap: 10px; margin-bottom: 12px; }
.hint { font-size: 13px; color: var(--muted); }

/* ---------- Controles ----------
   Celular: botões principais em grade 2×2, opções em linhas abaixo.
   sm+: os 4 botões principais lado a lado. */
.controls {
  display: flex;
  flex-direction: column;
  gap: 12px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 12px;
  margin: 12px 0;
}
.controls-main {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
}
.controls-options {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 18px;
  font-size: 13px;
  color: var(--muted);
}
.controls-options .form-check { margin: 0; min-height: 24px; display: flex; align-items: center; gap: 8px; padding-left: 2.5em; }
.controls-options .form-check-input { width: 2.2em; height: 1.2em; margin-top: 0; }
.controls-options .form-check-label:hover { color: var(--text); }

.ctrl-record.recording {
  --bs-btn-color: #fff;
  --bs-btn-bg: var(--red);
  --bs-btn-border-color: var(--red);
  --bs-btn-hover-color: #fff;
  --bs-btn-hover-bg: #cf4436;
  --bs-btn-hover-border-color: #cf4436;
}

.rate { display: flex; align-items: center; gap: 6px; font-size: 13px; color: var(--muted); }
.rate .form-select { width: auto; padding-top: .3rem; padding-bottom: .3rem; }

.pass-field { width: auto; flex-wrap: nowrap; }
.pass-field .input-group-text { font-size: 13px; padding: .3rem .6rem; }
.pass-field .form-control {
  flex: 0 0 64px;
  width: 64px;
  padding: .3rem .5rem;
  text-align: right;
  font-family: var(--mono);
}

/* ---------- Prática ---------- */
.practice-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px;
}
.words { font-size: 20px; line-height: 1.7; }
.words .w {
  display: inline-block;
  padding: 2px 8px;
  margin: 2px;
  border-radius: 8px;
  background: var(--card2);
  transition: background .2s, color .2s;
}
.words .w.good { background: var(--green); color: #0f1419; }
.words .w.bad { background: var(--red); color: #fff; }
.words .w.pending { background: var(--card2); color: var(--muted); }

.translation {
  margin-top: 12px;
  font-size: 15px;
  color: var(--muted);
  font-style: italic;
  line-height: 1.5;
}
.translation.hidden { display: none; }

.feedback { margin-top: 16px; }
.status { font-size: 14px; color: var(--muted); min-height: 20px; }
.status.recording { color: var(--red); font-weight: 600; }

.result { display: flex; flex-wrap: wrap; align-items: center; gap: 12px 16px; margin-top: 6px; }
.result.hidden { display: none; }
.score-badge {
  flex: 0 0 auto;
  width: 46px; height: 46px;
  border-radius: 50%;
  background: var(--card2);
  color: var(--green);
  display: flex; align-items: center; justify-content: center;
  font-weight: 700; font-size: 18px;
  border: 3px solid var(--green);
  font-family: var(--mono);
}
.result-actions { display: flex; flex-wrap: wrap; gap: 8px; flex: 1 1 auto; }
.result-actions .btn { flex: 1 1 auto; }

.best { margin-top: 12px; font-size: 13px; color: var(--muted); }
.best b { color: var(--green); font-family: var(--mono); }

/* ---------- Legendas ---------- */
.subtitles {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 8px;
  max-height: 45vh;
  overflow-y: auto;
}
.subtitles-head {
  font-size: 11px; color: var(--muted);
  text-transform: uppercase; letter-spacing: .5px; font-weight: 600;
  padding: 10px 12px; border-bottom: 1px solid var(--border);
}
.sub-list { list-style: none; margin: 0; padding: 6px; }
.sub-item {
  display: flex; align-items: flex-start; gap: 10px;
  padding: 12px; border-radius: 8px; cursor: pointer;
  font-size: 14px;
}
.sub-item:hover { background: var(--card2); }
.sub-item.active { background: var(--good-bg); font-weight: 600; }
.sub-time { color: var(--blue); font-size: 12px; min-width: 34px; font-family: var(--mono); }
.sub-text { flex: 1; }
.sub-score {
  font-size: 12px; font-weight: 700; color: var(--green);
  background: var(--good-bg); border-radius: 999px; padding: 1px 8px;
  font-family: var(--mono);
}
.sub-item.active .sub-score { background: var(--card); }

/* ===== Overlay de conclusão da lição (shadowing + dictation) ===== */
.lesson-complete {
  position: fixed;
  inset: 0;
  z-index: 1050;
  background: rgba(15, 20, 25, .72);
  backdrop-filter: blur(4px);
  display: flex;
  align-items: flex-start;
  justify-content: center;
  padding: 20px 12px;
  overflow-y: auto;
}
.lesson-complete.hidden { display: none; }

.lc-panel {
  position: relative;
  width: 100%;
  max-width: 640px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px 16px;
  box-shadow: 0 20px 60px rgba(0, 0, 0, .5);
}

.lc-close {
  position: absolute;
  top: 10px; right: 10px;
  width: 40px; height: 40px;
  border: 1px solid var(--border);
  background: var(--card2);
  color: var(--muted);
  border-radius: 8px;
  cursor: pointer;
  font-size: 14px;
}
.lc-close:hover { background: var(--hover); color: var(--text); }

.lc-panel .lc-title { margin: 0 44px 20px 0; font-size: 20px; font-weight: 600; color: var(--text); }

/* Estatísticas: empilhadas no celular, 3 colunas a partir de sm */
.lc-stats {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
  margin-bottom: 20px;
}
.lc-stat {
  background: var(--card2);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 14px;
  text-align: center;
}
.lc-stat-value { font-size: 26px; font-weight: 600; color: var(--green); font-family: var(--mono); }
.lc-stat-label {
  font-size: 11px; text-transform: uppercase; letter-spacing: .5px;
  color: var(--muted); font-weight: 600; margin-top: 4px;
}

/* Botão que expande o detalhamento */
.lc-toggle {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: var(--card2);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text);
  font-size: 14px;
  font-weight: 600;
  padding: 12px 14px;
  cursor: pointer;
}
.lc-toggle:hover { background: var(--hover); }
.lc-toggle-caret { color: var(--muted); }

.lc-details { margin-top: 14px; }
.lc-details .fb-legend { margin-bottom: 12px; }

.review-list { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 8px; }
.rev-item {
  background: var(--card2);
  border: 1px solid var(--border);
  border-left: 3px solid var(--border);
  border-radius: 8px;
  padding: 10px 12px;
}
.rev-item.perfect { border-left-color: var(--green); }
.rev-item.ok { border-left-color: var(--amber); }
.rev-item.low { border-left-color: var(--red); }
.rev-item.skipped { border-left-color: var(--muted); opacity: .75; }

.rev-top { display: flex; align-items: center; justify-content: space-between; margin-bottom: 6px; }
.rev-idx {
  font-size: 11px; font-weight: 700; color: var(--muted); font-family: var(--mono);
  background: var(--card); border: 1px solid var(--border); border-radius: 6px;
  min-width: 22px; text-align: center; padding: 1px 4px;
}
.rev-score { font-size: 14px; font-weight: 700; color: var(--text); font-family: var(--mono); }
.rev-item.perfect .rev-score { color: var(--green); }
.rev-item.ok .rev-score { color: var(--amber); }
.rev-item.low .rev-score { color: var(--red); }

.rev-sentence { font-size: 15px; line-height: 1.6; color: var(--text); }
.rev-sentence .t { padding: 1px 2px; border-radius: 4px; }
.rev-typed { font-size: 13px; color: var(--muted); margin-top: 4px; }
.rev-trans { font-size: 13px; color: var(--muted); font-style: italic; margin-top: 4px; }

/* Ações de navegação: empilhadas no celular, em linha a partir de sm */
.lc-actions {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-top: 22px;
}
.lc-nav-btn {
  flex: 1 1 auto;
  min-height: 44px;
  text-align: center;
  text-decoration: none;
  border: 1px solid var(--border);
  background: var(--card2);
  color: var(--text);
  border-radius: 8px;
  padding: 11px 16px;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: background .2s, transform .1s;
}
.lc-nav-btn:hover:not(:disabled) { background: var(--hover); color: var(--text); }
.lc-nav-btn:active:not(:disabled) { transform: scale(.98); }
.lc-nav-btn:disabled { opacity: .4; cursor: not-allowed; }
.lc-nav-btn.redo { border-color: rgba(243,156,18,.4); color: var(--amber); background: rgba(243,156,18,.12); }
.lc-nav-btn.redo:hover { background: rgba(243,156,18,.2); color: var(--amber); }
.lc-nav-btn.primary { background: var(--green); color: #0f1419; border-color: var(--green); }
.lc-nav-btn.primary:hover { background: #27ae60; color: #0f1419; }

.lc-home {
  display: inline-block;
  margin-top: 16px;
  color: var(--muted);
  text-decoration: none;
  font-size: 13px;
}
.lc-home:hover { color: var(--text); }

/* ==========================================================================
   Breakpoints (mobile-first)
   ========================================================================== */
@media (min-width: 576px) {
  .controls-main { grid-template-columns: repeat(4, minmax(0, 1fr)); }
  .lc-stats { grid-template-columns: repeat(3, 1fr); }
  .lc-actions { flex-direction: row; flex-wrap: wrap; }
  .lesson-complete { padding: 48px 20px; }
  .lc-panel { padding: 28px; }
  .lc-panel .lc-title { font-size: 22px; }
}

@media (min-width: 768px) {
  .stage { min-height: 220px; }
  .stage-inner { padding: 20px; }
  .practice-card { padding: 20px; }
  .words { font-size: 24px; }
  .result-actions .btn { flex: 0 0 auto; }
}

@media (min-width: 992px) {
  .btn { min-height: 38px; }
  .btn-sm { min-height: 32px; }
  .form-control,
  .form-select { font-size: .875rem; }
  .subtitles { max-height: 560px; }
  .controls-main { display: flex; flex-wrap: wrap; }
}