:root {
  --bg: #faf6f0;
  --surface: #ffffff;
  --ink: #2b2620;
  --muted: #7a7267;
  --primary: #c2410c;      /* terre cuite catalane */
  --primary-dark: #9a3412;
  --accent: #b45309;
  --user-bubble: #fde8d7;
  --tutor-bubble: #ffffff;
  --correction-bg: #fef9c3;
  --correction-border: #ca8a04;
  --radius: 14px;
  --shadow: 0 1px 4px rgba(43, 38, 32, 0.12);
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: Georgia, "Times New Roman", serif;
  background: var(--bg);
  color: var(--ink);
  height: 100vh;
  display: flex;
  flex-direction: column;
}

/* ---------- En-tête ---------- */
.app-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.7rem 1.2rem;
  background: var(--surface);
  border-bottom: 3px solid var(--primary);
  box-shadow: var(--shadow);
}
.app-title h1 { margin: 0; font-size: 1.5rem; color: var(--primary-dark); font-style: italic; }
.subtitle { margin: 0; font-size: 0.8rem; color: var(--muted); }
.header-actions { display: flex; gap: 0.5rem; }

/* ---------- Boutons ---------- */
button {
  font-family: inherit;
  font-size: 1rem;
  border: none;
  border-radius: var(--radius);
  cursor: pointer;
  transition: transform 0.08s ease, background 0.15s ease;
}
button:active { transform: scale(0.97); }
button:disabled { opacity: 0.45; cursor: not-allowed; }

.btn-primary {
  background: var(--primary);
  color: #fff;
  padding: 0.6rem 1.2rem;
}
.btn-primary:hover:not(:disabled) { background: var(--primary-dark); }

.btn-secondary {
  background: transparent;
  border: 1px solid #d6cdc2;
  color: var(--ink);
  padding: 0.45rem 0.8rem;
  font-size: 0.9rem;
}
.btn-secondary:hover:not(:disabled) { background: #f3ede5; }

/* ---------- Zone de chat ---------- */
.chat-container {
  flex: 1;
  display: flex;
  flex-direction: column;
  max-width: 780px;
  width: 100%;
  margin: 0 auto;
  min-height: 0;
}

.chat {
  flex: 1;
  overflow-y: auto;
  padding: 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.8rem;
}

.welcome-card {
  background: var(--surface);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 1.5rem;
  margin: auto;
  max-width: 540px;
  text-align: center;
}
.welcome-card h2 { color: var(--primary-dark); margin-top: 0; }
.welcome-options {
  display: flex;
  gap: 1rem;
  justify-content: center;
  margin: 1.2rem 0;
  flex-wrap: wrap;
}
.welcome-options label {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
  font-size: 0.85rem;
  color: var(--muted);
  text-align: left;
}

select, input[type="text"], input[type="password"] {
  font-family: inherit;
  font-size: 0.95rem;
  padding: 0.5rem 0.6rem;
  border: 1px solid #d6cdc2;
  border-radius: 8px;
  background: #fff;
  color: var(--ink);
}

.compat-warning {
  color: #b91c1c;
  font-size: 0.85rem;
  background: #fee2e2;
  border-radius: 8px;
  padding: 0.5rem;
}

.support-note {
  font-size: 0.82rem;
  color: #854d0e;
  background: var(--correction-bg);
  border-radius: 8px;
  padding: 0.5rem 0.8rem;
  text-align: left;
}

/* ---------- Bulles ---------- */
.msg {
  max-width: 85%;
  padding: 0.7rem 1rem;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  line-height: 1.45;
  position: relative;
}
.msg.user {
  align-self: flex-end;
  background: var(--user-bubble);
  border-bottom-right-radius: 4px;
}
.msg.tutor {
  align-self: flex-start;
  background: var(--tutor-bubble);
  border-bottom-left-radius: 4px;
}
.msg.system {
  align-self: center;
  background: transparent;
  box-shadow: none;
  color: var(--muted);
  font-size: 0.85rem;
  font-style: italic;
  text-align: center;
}
.msg .speaker {
  font-size: 0.72rem;
  color: var(--muted);
  margin-bottom: 0.2rem;
  font-style: italic;
}
.msg .target-text { font-size: 1.05rem; }
.msg .translation {
  margin-top: 0.35rem;
  font-size: 0.85rem;
  color: var(--muted);
  border-top: 1px dashed #e2d9cd;
  padding-top: 0.35rem;
}
.msg .reading {
  margin-top: 0.25rem;
  font-size: 0.85rem;
  color: var(--accent);
  font-style: italic;
}
.msg .btn-speak {
  background: transparent;
  border: none;
  font-size: 0.95rem;
  padding: 0 0.2rem;
  vertical-align: middle;
}

.correction {
  align-self: flex-start;
  max-width: 85%;
  background: var(--correction-bg);
  border-left: 4px solid var(--correction-border);
  border-radius: 8px;
  padding: 0.6rem 0.9rem;
  font-size: 0.88rem;
  line-height: 1.4;
}
.correction .corr-title { font-weight: bold; color: #854d0e; }
.correction del { color: #b91c1c; }
.correction ins { color: #15803d; text-decoration: none; font-weight: bold; }

/* ---------- Suggestions ---------- */
.suggestions {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
  padding: 0.4rem 1rem;
}
.suggestion-chip {
  background: var(--surface);
  border: 1px solid var(--accent);
  color: var(--accent);
  border-radius: 999px;
  padding: 0.35rem 0.85rem;
  font-size: 0.85rem;
}
.suggestion-chip:hover { background: #fff7ed; }

/* ---------- Barre de statut et de saisie ---------- */
.status-bar {
  padding: 0.3rem 1rem;
  font-size: 0.85rem;
  color: var(--muted);
  font-style: italic;
  text-align: center;
  min-height: 1.4rem;
}
.status-bar.error { color: #b91c1c; font-style: normal; }

.input-bar {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.7rem 1rem 1rem;
  background: var(--bg);
}
#text-input { flex: 1; }

.btn-mic {
  width: 52px;
  height: 52px;
  border-radius: 50%;
  font-size: 1.4rem;
  background: var(--surface);
  border: 2px solid var(--primary);
  flex-shrink: 0;
}
.btn-mic.listening {
  background: var(--primary);
  animation: pulse 1.2s infinite;
}
.btn-mic.muted { opacity: 0.35; }

.btn-mic-off {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  font-size: 1rem;
  background: var(--surface);
  border: 1px solid #d6cdc2;
  flex-shrink: 0;
}
.btn-mic-off.active {
  background: #b91c1c;
  border-color: #b91c1c;
  color: #fff;
}
@keyframes pulse {
  0% { box-shadow: 0 0 0 0 rgba(194, 65, 12, 0.45); }
  70% { box-shadow: 0 0 0 14px rgba(194, 65, 12, 0); }
  100% { box-shadow: 0 0 0 0 rgba(194, 65, 12, 0); }
}
.btn-send { padding: 0.55rem 0.9rem; }

.handsfree-toggle {
  display: flex;
  align-items: center;
  gap: 0.3rem;
  font-size: 0.75rem;
  color: var(--muted);
  white-space: nowrap;
}

/* ---------- Modales ---------- */
.modal {
  position: fixed;
  inset: 0;
  background: rgba(43, 38, 32, 0.45);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 50;
  padding: 1rem;
}
.modal-content {
  background: var(--surface);
  border-radius: var(--radius);
  padding: 1.5rem;
  max-width: 460px;
  width: 100%;
  max-height: 85vh;
  overflow-y: auto;
  box-shadow: 0 8px 30px rgba(0,0,0,0.25);
}
.modal-content h2 { margin-top: 0; color: var(--primary-dark); }
.modal-content label {
  display: block;
  margin-bottom: 1rem;
  font-size: 0.9rem;
}
.modal-content label input[type="text"],
.modal-content label input[type="password"],
.modal-content label select {
  display: block;
  width: 100%;
  margin-top: 0.3rem;
}
.modal-content small { color: var(--muted); display: block; margin-top: 0.25rem; }
.checkbox-label { display: flex; align-items: center; gap: 0.5rem; }
.checkbox-label input { margin: 0; }
.modal-actions { text-align: right; margin-top: 1rem; }
.voice-info { font-size: 0.8rem; color: var(--muted); }
.app-version { font-size: 0.75rem; color: var(--muted); text-align: center; margin: 0.5rem 0 0; }

/* ---------- Progrès & révisions ---------- */
.due-badge {
  background: var(--primary);
  color: #fff;
  border-radius: 999px;
  font-size: 0.7rem;
  padding: 0.05rem 0.4rem;
  margin-left: 0.25rem;
  vertical-align: top;
}
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0.5rem;
  margin-bottom: 0.6rem;
}
.stat-card {
  background: var(--bg);
  border-radius: 10px;
  padding: 0.55rem 0.4rem;
  text-align: center;
}
.stat-card .stat-value { font-size: 1.3rem; color: var(--primary-dark); font-weight: bold; }
.stat-card .stat-label { font-size: 0.7rem; color: var(--muted); }
.lang-stats { font-size: 0.8rem; color: var(--muted); margin: 0.3rem 0 0.8rem; }
.progress-actions { display: flex; gap: 0.5rem; flex-wrap: wrap; margin-bottom: 0.8rem; }
.deck-title { margin: 0.6rem 0 0.4rem; color: var(--primary-dark); font-size: 1rem; }
.deck-list { max-height: 30vh; overflow-y: auto; }
.deck-row {
  display: flex;
  align-items: baseline;
  gap: 0.5rem;
  padding: 0.3rem 0.2rem;
  border-bottom: 1px dashed #eee5d9;
  font-size: 0.9rem;
}
.deck-row .deck-lang {
  font-size: 0.65rem;
  color: var(--muted);
  border: 1px solid #d6cdc2;
  border-radius: 6px;
  padding: 0 0.3rem;
  white-space: nowrap;
}
.deck-row .deck-term { font-weight: bold; }
.deck-row .deck-reading { color: var(--accent); font-style: italic; font-size: 0.8rem; }
.deck-row .deck-translation { color: var(--muted); flex: 1; }
.deck-row .deck-delete {
  background: transparent;
  border: none;
  color: var(--muted);
  font-size: 0.85rem;
  padding: 0 0.2rem;
}
.deck-hint { font-size: 0.75rem; color: var(--muted); }
.deck-empty { font-size: 0.85rem; color: var(--muted); font-style: italic; padding: 0.5rem 0; }

.review-card {
  background: var(--bg);
  border-radius: var(--radius);
  padding: 1.2rem;
  text-align: center;
  margin-bottom: 0.8rem;
  min-height: 7rem;
}
.review-term { font-size: 1.5rem; color: var(--ink); }
.review-reading { font-size: 0.95rem; color: var(--accent); font-style: italic; margin-top: 0.2rem; }
.review-answer { font-size: 1.05rem; color: var(--primary-dark); margin-top: 0.7rem; border-top: 1px dashed #e2d9cd; padding-top: 0.7rem; }
.review-actions { display: flex; gap: 0.5rem; justify-content: center; flex-wrap: wrap; margin-bottom: 0.6rem; }
.review-progress { text-align: center; font-size: 0.8rem; color: var(--muted); }

/* ---------- v0.4.0 : pédagogie ---------- */
.welcome-alt { display: flex; gap: 0.5rem; justify-content: center; margin-top: 0.7rem; flex-wrap: wrap; }

.settings-sep { border: none; border-top: 1px dashed #e2d9cd; margin: 1rem 0; }

/* ---------- v0.5.0 : contenu et immersion ---------- */
.immersion-toggle { justify-content: center; font-size: 0.85rem; color: var(--muted); margin-bottom: 0.8rem; }
.culture-note {
  align-self: flex-start;
  max-width: 85%;
  background: #eff6ff;
  border-left: 4px solid #3b82f6;
  border-radius: 8px;
  padding: 0.55rem 0.9rem;
  font-size: 0.85rem;
  line-height: 1.45;
  color: #1e3a8a;
}

/* Compréhension orale : texte flouté jusqu'à révélation */
.msg.masked .target-text,
.msg.masked .reading,
.msg.masked .translation { filter: blur(7px); user-select: none; }
.btn-reveal-text {
  background: transparent;
  border: 1px solid var(--accent);
  color: var(--accent);
  border-radius: 999px;
  font-size: 0.7rem;
  padding: 0.05rem 0.5rem;
  margin-left: 0.4rem;
}

.btn-deepen {
  display: block;
  margin-top: 0.4rem;
  background: transparent;
  border: 1px solid var(--correction-border);
  color: #854d0e;
  border-radius: 999px;
  font-size: 0.75rem;
  padding: 0.15rem 0.6rem;
}

/* Grammaire */
.modal-wide { max-width: 640px; }
.grammar-result {
  white-space: pre-wrap;
  font-family: "Courier New", monospace;
  font-size: 0.85rem;
  line-height: 1.45;
  background: var(--bg);
  border-radius: 10px;
  padding: 0.8rem;
  max-height: 50vh;
  overflow-y: auto;
}
.mindmap-wrap { overflow-x: auto; background: var(--bg); border-radius: 10px; padding: 0.5rem; }
.mindmap-wrap svg { display: block; }
.mm-node { fill: #fff; stroke: var(--accent); stroke-width: 1.2; }
.mm-depth-0 { fill: var(--primary); stroke: var(--primary-dark); }
.mm-depth-1 { fill: #fff7ed; }
.mm-depth-2 { fill: #ffffff; }
.mm-depth-3 { fill: #faf6f0; }
.mindmap-wrap text { font-size: 12px; font-family: Georgia, serif; fill: var(--ink); }
.mm-root-text { fill: #fff; }
.mm-link { fill: none; stroke: #d6cdc2; stroke-width: 1.4; }

/* Exercices */
.btn-mic-small { width: 44px; height: 44px; font-size: 1.1rem; }
.exo-input { width: 100%; margin-bottom: 0.6rem; }
.exo-feedback {
  background: var(--bg);
  border-radius: 10px;
  padding: 0.7rem 0.9rem;
  font-size: 0.9rem;
  line-height: 1.5;
}
.exo-line { margin-bottom: 0.3rem; }
.exo-ok { color: #15803d; }
.exo-miss { color: #b91c1c; text-decoration: underline wavy; }
.exo-score { font-weight: bold; color: var(--primary-dark); margin: 0.3rem 0; }
.proxy-info {
  background: #ecfdf5;
  border-left: 4px solid #059669;
  border-radius: 8px;
  padding: 0.6rem 0.9rem;
  font-size: 0.88rem;
}

.summary-content {
  white-space: pre-wrap;
  font-size: 0.92rem;
  line-height: 1.5;
  max-height: 55vh;
  overflow-y: auto;
}

.hidden { display: none !important; }

@media (max-width: 560px) {
  .handsfree-toggle span { display: none; }
  .msg { max-width: 92%; }
}