/* Just English AI - CSS styly */
/* Přesně stejné jako v Next.js verzi */

:root {
  --background: #ffffff;
  --foreground: #171717;
  --primary: #667eea;
  --primary-dark: #5568d3;
  --secondary: #764ba2;
  --error: #e74c3c;
  --error-dark: #c0392b;
  --success: #28a745;
  --success-light: #20c997;
  --warning: #ffc107;
  --warning-bg: #fff3cd;
  --warning-text: #856404;
  --text-primary: #333;
  --text-muted: #999;
  --bg-primary: #ffffff;
  --bg-secondary: #f8f9fa;
  --bg-hover: #e9ecef;
  --border: #e0e0e0;
  --border-light: #f0f0f0;
  --shadow-sm: 0 2px 5px rgba(0,0,0,0.05);
  --shadow-md: 0 4px 15px rgba(0,0,0,0.1);
  --shadow-lg: 0 10px 40px rgba(0,0,0,0.1);
  --radius-sm: 6px;
  --radius-md: 8px;
  --radius-lg: 10px;
  --radius-xl: 12px;
  --radius-2xl: 15px;
  --radius-full: 20px;
  --transition: all 0.3s ease;
}

body {
  background: var(--background);
  color: var(--foreground);
  font-family: Arial, Helvetica, sans-serif;
}

/* Chat Interface Styles */
.chat-interface {
  background: var(--bg-primary);
  border-radius: var(--radius-full);
  box-shadow: var(--shadow-lg);
  max-width: 900px;
  width: 100%;
  height: 80vh;
  display: flex;
  flex-direction: column;
}

.chat-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.5rem;
  border-bottom: 2px solid var(--border-light);
}

.chat-header h2 {
  color: var(--primary);
  margin-bottom: 0.2rem;
}

.chat-header p {
  color: var(--text-muted);
  font-size: 0.9rem;
}

.free-chat-correction-option {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  margin-top: 0.5rem;
  cursor: pointer;
  font-size: 0.9rem;
  color: var(--text-primary);
}
.free-chat-correction-option input[type="checkbox"] {
  width: 1.1rem;
  height: 1.1rem;
  accent-color: var(--primary);
  cursor: pointer;
}

.header-controls {
  display: flex;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
}

.end-button {
  padding: 0.7rem 1.5rem;
  background: var(--error);
  color: white;
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  font-weight: bold;
  transition: var(--transition);
}

.end-button:hover {
  background: var(--error-dark);
}

a.end-button {
  text-decoration: none;
  color: white;
}

.messages-container {
  flex: 1;
  overflow-y: auto;
  padding: 2rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.message {
  max-width: 70%;
  animation: fadeIn 0.3s ease;
}

.message.user {
  align-self: flex-end;
}

.message.assistant {
  align-self: flex-start;
}

.message-content {
  position: relative;
  padding: 1rem 1.5rem;
  padding-right: 90px;
  border-radius: var(--radius-2xl);
  line-height: 1.5;
}

.message.user .message-content {
  background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
  color: white;
}

.message.assistant .message-content {
  background: var(--bg-secondary);
  color: var(--text-primary);
}

.speak-button, .translate-button {
  position: absolute;
  top: 10px;
  right: 0.5rem;
  background: rgba(102, 126, 234, 0.1);
  border: none;
  border-radius: 50%;
  width: 35px;
  height: 35px;
  font-size: 1.2rem;
  cursor: pointer;
  transition: var(--transition);
  display: flex;
  align-items: center;
  justify-content: center;
}

.translate-button {
  right: 45px;
}

.speak-button:hover:not(:disabled),
.translate-button:hover {
  background: rgba(102, 126, 234, 0.2);
  transform: scale(1.1);
}

.input-container {
  display: flex;
  gap: 1rem;
  padding: 1.5rem;
  border-top: 2px solid var(--border-light);
}

.input-container input {
  flex: 1;
  padding: 1rem;
  border: 2px solid var(--border);
  border-radius: var(--radius-lg);
  font-size: 1rem;
  transition: var(--transition);
}

.input-container input:focus {
  outline: none;
  border-color: var(--primary);
}

.input-container button {
  padding: 1rem 2rem;
  background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
  color: white;
  border: none;
  border-radius: var(--radius-lg);
  font-weight: bold;
  cursor: pointer;
  transition: var(--transition);
}

.input-container button:hover:not(:disabled) {
  transform: translateY(-2px);
  box-shadow: 0 5px 15px rgba(102, 126, 234, 0.4);
}

.input-container button:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

/* Speech correction bar – "Nemysleli jste?" */
.speech-correction-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem 1rem;
  padding: 0.75rem 1rem;
  margin: 0 1.5rem 1rem;
  background: var(--warning-bg);
  border: 1px solid var(--warning);
  border-radius: var(--radius-md);
  font-size: 0.9rem;
  color: var(--warning-text);
}

.speech-correction-label {
  flex: 0 0 auto;
}

.speech-correction-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.speech-correction-btn {
  padding: 0.4rem 0.8rem;
  background: var(--primary);
  color: white;
  border: none;
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  cursor: pointer;
  transition: var(--transition);
}

.speech-correction-btn:hover {
  background: var(--primary-dark);
}

.speech-correction-btn.speech-correction-keep {
  background: var(--text-muted);
}

.speech-correction-btn.speech-correction-keep:hover {
  background: var(--text-primary);
}

.auto-play-toggle {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  cursor: pointer;
  padding: 0.5rem 1rem;
  background: var(--bg-secondary);
  border-radius: var(--radius-md);
  transition: var(--transition);
  white-space: nowrap;
}

.auto-play-toggle:hover {
  background: var(--bg-hover);
}

.auto-play-toggle input[type="checkbox"] {
  width: 18px;
  height: 18px;
  cursor: pointer;
  accent-color: var(--primary);
}

.mic-button {
  padding: 1rem;
  background: var(--primary);
  color: white;
  border: none;
  border-radius: var(--radius-lg);
  font-size: 1.5rem;
  cursor: pointer;
  transition: var(--transition);
  min-width: 60px;
}

.mic-button:hover:not(:disabled) {
  background: var(--primary-dark);
  transform: scale(1.05);
}

.mic-button.listening {
  background: var(--error);
  animation: pulse-scale 1.5s ease-in-out infinite;
}

.mic-button:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.stop-speaking-button {
  padding: 1rem 1.5rem;
  background: var(--error);
  color: white;
  border: none;
  border-radius: var(--radius-lg);
  font-weight: bold;
  cursor: pointer;
  transition: var(--transition);
  animation: fadeIn 0.3s ease;
}

.stop-speaking-button:hover {
  background: var(--error-dark);
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Denní rozhovor – progress bar úkolu dne */
.daily-mission-progress {
  padding: 1rem 1.5rem 0.75rem;
  border-bottom: 2px solid var(--border-light);
}
.daily-mission-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.5rem;
}
.daily-mission-title {
  font-weight: 600;
  color: var(--text-primary);
}
.daily-mission-status {
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--primary);
}
.daily-mission-bar {
  position: relative;
  width: 100%;
  height: 10px;
  border-radius: 999px;
  background: var(--bg-secondary);
  overflow: hidden;
}
.daily-mission-bar-fill {
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 0%;
  border-radius: 999px;
  background: linear-gradient(90deg, #22c55e, #4ade80);
  transition: width 0.3s ease;
}
.daily-mission-hint {
  margin-top: 0.5rem;
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* Badge „Splněno“ u tlačítka Denní rozhovor na hlavní stránce */
.daily-chat-btn-link {
  position: relative;
}
.daily-chat-badge {
  position: absolute;
  top: -6px;
  right: -6px;
  background: linear-gradient(135deg, #22c55e, #16a34a);
  color: white;
  font-size: 0.65rem;
  font-weight: 700;
  padding: 0.2rem 0.45rem;
  border-radius: 999px;
  box-shadow: 0 2px 6px rgba(0,0,0,0.2);
  white-space: nowrap;
  text-transform: uppercase;
  letter-spacing: 0.02em;
}

/* Tlačítko Dokončit denní úkol – zelené (přepíše .input-container button) */
.daily-complete-btn,
.input-container .daily-complete-btn {
  background: linear-gradient(135deg, #22c55e, #16a34a) !important;
  color: white !important;
  border: none;
  border-radius: var(--radius-lg);
  font-weight: bold;
  padding: 0.9rem 1.4rem;
  cursor: pointer;
  font-size: 0.9rem;
  white-space: nowrap;
  transition: var(--transition);
}
.daily-complete-btn:hover,
.input-container .daily-complete-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 5px 15px rgba(34, 197, 94, 0.4);
  background: linear-gradient(135deg, #16a34a, #15803d) !important;
}

.daily-chat-summary {
  margin-top: 1.5rem;
  padding: 1.5rem;
  background: linear-gradient(135deg, #f0f9ff 0%, #e0f2fe 100%);
  border: 3px solid #667eea;
  border-radius: var(--radius-2xl);
}

.daily-chat-summary h3 {
  color: #1e40af;
  font-size: 1.25rem;
  margin-bottom: 1rem;
}

.daily-summary-stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.daily-summary-stat {
  background: white;
  padding: 1rem;
  border-radius: var(--radius-lg);
  text-align: center;
  box-shadow: var(--shadow-sm);
}

.daily-summary-stat .value {
  font-size: 1.5rem;
  font-weight: bold;
  color: var(--primary);
}

.daily-summary-stat .label {
  font-size: 0.85rem;
  color: var(--text-muted);
}

.daily-summary-errors {
  margin-top: 1rem;
}

.daily-summary-error-item {
  background: white;
  padding: 1rem;
  margin-bottom: 0.75rem;
  border-radius: var(--radius-md);
  border-left: 4px solid var(--warning);
}

/* Profil – kalendář denního rozhovoru (Duolingo styl) */
.profile-daily-calendar-wrapper {
  background: linear-gradient(135deg, #fefce8 0%, #fef9c3 100%);
  border: 2px solid #eab308;
  border-radius: var(--radius-2xl);
  padding: 1.25rem;
}
.profile-daily-calendar {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
  justify-content: flex-start;
  align-items: flex-end;
}
.profile-daily-day {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.35rem;
  min-width: 2.5rem;
}
.profile-daily-day-circle {
  width: 2.25rem;
  height: 2.25rem;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.9rem;
  font-weight: bold;
  color: white;
  transition: transform 0.2s ease;
}
.profile-daily-day.completed .profile-daily-day-circle {
  background: linear-gradient(135deg, #22c55e, #16a34a);
  box-shadow: 0 2px 6px rgba(34, 197, 94, 0.4);
}
.profile-daily-day.missed .profile-daily-day-circle {
  background: #e5e7eb;
  color: #9ca3af;
}
.profile-daily-day.today .profile-daily-day-circle {
  box-shadow: 0 0 0 3px rgba(234, 179, 8, 0.6);
}
.profile-daily-day-label {
  font-size: 0.7rem;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
}
.profile-daily-day-num {
  font-size: 0.75rem;
  color: var(--text-primary);
}

@keyframes pulse-scale {
  0%, 100% {
    transform: scale(1);
    box-shadow: 0 0 0 0 rgba(231, 76, 60, 0.7);
  }
  50% {
    transform: scale(1.05);
    box-shadow: 0 0 0 10px rgba(231, 76, 60, 0);
  }
}

.message-translation {
  margin-top: 0.5rem;
  padding: 0.8rem 1rem;
  background: rgba(102, 126, 234, 0.08);
  border-left: 3px solid var(--primary);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-size: 0.9rem;
  line-height: 1.5;
  animation: fadeIn 0.3s ease;
}

.mistakes-detail {
  margin-top: 1rem;
  padding: 1rem;
  background: var(--warning-bg);
  border-left: 4px solid var(--warning);
  border-radius: var(--radius-md);
  max-width: 100%;
}

.mistakes-header {
  font-weight: bold;
  color: var(--warning-text);
  margin-bottom: 0.5rem;
  font-size: 0.95rem;
  cursor: pointer;
}

.mistake-detail-item {
  background: white;
  padding: 1rem;
  border-radius: var(--radius-md);
  margin-bottom: 0.8rem;
  box-shadow: var(--shadow-sm);
}

.mistake-type-badge {
  display: inline-block;
  padding: 0.3rem 0.8rem;
  background: var(--primary);
  color: white;
  border-radius: var(--radius-2xl);
  font-size: 0.85rem;
  font-weight: bold;
  margin-bottom: 0.8rem;
}

.mistake-comparison {
  display: flex;
  align-items: center;
  gap: 0.8rem;
  margin-bottom: 0.8rem;
  flex-wrap: wrap;
}

.mistake-wrong {
  color: #8b6b1f;
  padding: 0.4rem 0.6rem;
  background: #fff8e6;
  border-radius: var(--radius-sm);
  flex: 1;
  min-width: 150px;
}

.mistake-arrow {
  color: var(--primary);
  font-size: 1.5rem;
  font-weight: bold;
}

.mistake-correct {
  color: var(--success);
  padding: 0.4rem 0.6rem;
  background: #e8f5e9;
  border-radius: var(--radius-sm);
  flex: 1;
  min-width: 150px;
}

.mistake-explanation-box {
  padding: 0.8rem;
  background: var(--bg-secondary);
  border-left: 3px solid var(--primary);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-size: 0.9rem;
  line-height: 1.5;
}

.start-conversation-prompt {
  padding: 1.5rem;
  text-align: center;
  animation: slideDown 0.3s ease;
}

.start-conversation-button {
  padding: 1.2rem 2.5rem;
  background: linear-gradient(135deg, var(--success) 0%, var(--success-light) 100%);
  color: white;
  border: none;
  border-radius: var(--radius-xl);
  font-weight: bold;
  font-size: 1.2rem;
  cursor: pointer;
  transition: var(--transition);
  box-shadow: 0 4px 15px rgba(40, 167, 69, 0.3);
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

.start-conversation-button:hover:not(:disabled) {
  transform: translateY(-3px);
  box-shadow: 0 6px 20px rgba(40, 167, 69, 0.4);
}

@keyframes slideDown {
  from {
    opacity: 0;
    transform: translateY(-20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* AI Asistent – stejné okno a tlačítka jako chat.php, viditelný obsah bez blikání */
#assistantApp #assistantWelcome {
  display: block;
  visibility: visible;
  opacity: 1;
}
.assistant-welcome {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  min-height: 12rem;
}
.assistant-welcome-intro {
  color: #333;
  font-size: 1.1rem;
  line-height: 1.6;
  margin: 0;
}
.assistant-welcome-examples {
  list-style: none;
  padding: 0;
  margin: 0;
  color: #333;
  line-height: 1.8;
}
.assistant-welcome-examples li {
  padding: 0.2rem 0;
}
.assistant-features-box {
  padding: 1.25rem;
  background: var(--bg-secondary);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
}
.assistant-features-box h3 {
  margin: 0 0 0.75rem;
  font-size: 1rem;
  color: #333;
}
.assistant-features-box ul {
  list-style: none;
  padding: 0;
  margin: 0;
  font-size: 0.95rem;
  color: #333;
  line-height: 1.6;
}
.assistant-features-box li {
  display: flex;
  align-items: flex-start;
  gap: 0.5rem;
  margin-bottom: 0.5rem;
}
.assistant-features-box .icon {
  font-size: 1.1rem;
}
.assistant-messages-inner {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}
.assistant-messages-inner.hidden {
  display: none !important;
}
.assistant-search-input {
  width: 100%;
  padding: 1rem;
  border: 2px solid var(--border);
  border-radius: var(--radius-lg);
  font-size: 1rem;
  transition: var(--transition);
}
.assistant-search-input:focus {
  outline: none;
  border-color: var(--primary);
}

/* Nadpisy v odpovědích asistenta (markdown) */
.message-content h1, .message-content h2, .message-content h3,
.message-content h4, .message-content h5, .message-content h6 {
  margin: 1rem 0 0.5rem;
  font-weight: 700;
  line-height: 1.3;
}
.message-content h1 { font-size: 1.35rem; }
.message-content h2 { font-size: 1.2rem; }
.message-content h3 { font-size: 1.1rem; }
.message-content h4 { font-size: 1.05rem; }
.message-content h5, .message-content h6 { font-size: 1rem; }
.message-content h1:first-child, .message-content h2:first-child,
.message-content h3:first-child { margin-top: 0; }

/* Indikátor „AI asistent píše...“ */
.message-content.typing {
  color: var(--text-muted);
  font-style: italic;
}

/* Box s třemi akčními tlačítky pod odpovědí asistenta */
.assistant-actions-box {
  margin-top: 1rem;
  padding: 1rem;
  background: #e0f2fe;
  border: 1px solid #bae6fd;
  border-radius: var(--radius-lg);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.75rem;
  max-width: 100%;
}
.assistant-action-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1rem;
  border: none;
  border-radius: var(--radius-md);
  color: white;
  font-weight: bold;
  font-size: 0.9rem;
  cursor: pointer;
  transition: var(--transition);
  white-space: nowrap;
}
.assistant-action-btn .icon {
  font-size: 1.1rem;
}
.assistant-action-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}
.assistant-action-test {
  background: linear-gradient(135deg, #7c3aed 0%, #a78bfa 100%);
}
.assistant-action-explain {
  background: #1e90ff;
}
.assistant-action-practice {
  background: #22c55e;
  grid-column: 1 / -1;
}
@media (min-width: 500px) {
  .assistant-action-practice {
    grid-column: 1;
  }
}