/* Reset and base styles */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --primary-color: #6366f1;
  --primary-hover: #4f46e5;
  --success-color: #22c55e;
  --error-color: #ef4444;
  --warning-color: #f59e0b;
  --bg-color: #f8fafc;
  --card-bg: #ffffff;
  --text-primary: #1e293b;
  --text-secondary: #64748b;
  --border-color: #e2e8f0;
  --hint-bg: #f1f5f9;
  --action-bg: #fef3c7;
  --action-border: #fbbf24;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
  background-color: var(--bg-color);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 2rem;
}

/* Header */
.header {
  text-align: center;
  margin-bottom: 2rem;
}

.header h1 {
  font-size: 2.5rem;
  color: var(--primary-color);
  margin-bottom: 0.5rem;
}

.subtitle {
  color: var(--text-secondary);
  font-size: 1.1rem;
}

/* Controls */
.controls {
  background: var(--card-bg);
  border-radius: 12px;
  padding: 1.5rem;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  align-items: flex-end;
  margin-bottom: 1.5rem;
}

.control-group {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  flex: 1;
  min-width: 200px;
}

.control-group label {
  font-weight: 500;
  font-size: 0.9rem;
  color: var(--text-secondary);
}

.control-group select {
  padding: 0.75rem 1rem;
  border: 1px solid var(--border-color);
  border-radius: 8px;
  font-size: 1rem;
  background: white;
  cursor: pointer;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.control-group select:hover {
  border-color: var(--primary-color);
}

.control-group select:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.2);
}

.control-group select:disabled {
  background: var(--hint-bg);
  cursor: not-allowed;
}

/* Generate Button */
.generate-btn {
  padding: 0.75rem 2rem;
  background: var(--primary-color);
  color: white;
  border: none;
  border-radius: 8px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.2s, transform 0.1s;
  min-width: 150px;
  height: 46px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.generate-btn:hover:not(:disabled) {
  background: var(--primary-hover);
  transform: translateY(-1px);
}

.generate-btn:disabled {
  background: var(--text-secondary);
  cursor: not-allowed;
  transform: none;
}

.btn-loading {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.spinner {
  width: 18px;
  height: 18px;
  border: 2px solid rgba(255, 255, 255, 0.3);
  border-top-color: white;
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

.hidden {
  display: none !important;
}

/* Status Message */
.status-message {
  padding: 1rem;
  border-radius: 8px;
  margin-bottom: 1.5rem;
  font-weight: 500;
}

.status-message.error {
  background: #fef2f2;
  color: var(--error-color);
  border: 1px solid #fecaca;
}

.status-message.success {
  background: #f0fdf4;
  color: var(--success-color);
  border: 1px solid #bbf7d0;
}

.status-message.warning {
  background: #fffbeb;
  color: var(--warning-color);
  border: 1px solid #fde68a;
}

/* Card Display */
.card-display {
  background: var(--card-bg);
  border-radius: 12px;
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
  overflow: hidden;
}

.card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.5rem;
  background: linear-gradient(135deg, var(--primary-color), var(--primary-hover));
  color: white;
}

.card-category,
.card-difficulty {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.category-badge,
.difficulty-badge {
  font-size: 1.25rem;
  font-weight: 700;
}

.category-translation,
.difficulty-translation {
  font-size: 0.85rem;
  opacity: 0.85;
}

/* Hints Table */
.hints-container {
  overflow-x: auto;
}

.hints-table {
  width: 100%;
  border-collapse: collapse;
}

.hints-table th {
  background: var(--hint-bg);
  padding: 1rem;
  text-align: left;
  font-weight: 600;
  color: var(--text-secondary);
  border-bottom: 2px solid var(--border-color);
  position: sticky;
  top: 0;
}

.hints-table td {
  padding: 0.875rem 1rem;
  border-bottom: 1px solid var(--border-color);
  vertical-align: top;
}

.hints-table tr:hover {
  background: var(--hint-bg);
}

.hint-number {
  width: 50px;
  text-align: center !important;
}

.hint-type {
  width: 80px;
}

.hint-content-pt,
.hint-content-en {
  width: calc((100% - 130px) / 2);
}

.hints-table td.hint-number {
  font-weight: 700;
  color: var(--primary-color);
  text-align: center;
}

.type-badge {
  display: inline-block;
  padding: 0.25rem 0.5rem;
  border-radius: 4px;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
}

.type-badge.dica {
  background: #dbeafe;
  color: #1d4ed8;
}

.type-badge.acao {
  background: var(--action-bg);
  color: #b45309;
}

.action-row {
  background: #fffbeb !important;
}

.action-row:hover {
  background: #fef3c7 !important;
}

.action-icon {
  margin-right: 0.25rem;
}

/* Answer */
.answer-container {
  padding: 1.5rem;
  background: linear-gradient(135deg, #22c55e, #16a34a);
  color: white;
  text-align: center;
}

.answer-label {
  font-size: 0.9rem;
  opacity: 0.9;
  margin-bottom: 0.5rem;
}

.answer-content {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
}

.answer-emoji {
  font-size: 2.5rem;
}

.answer-text {
  font-size: 2rem;
  font-weight: 800;
  letter-spacing: 0.05em;
}

/* Metadata */
.metadata {
  display: flex;
  justify-content: space-between;
  padding: 1rem 1.5rem;
  background: var(--hint-bg);
  font-size: 0.85rem;
  color: var(--text-secondary);
}

/* Footer */
.footer {
  text-align: center;
  padding: 2rem;
  color: var(--text-secondary);
  font-size: 0.9rem;
}

/* Responsive */
@media (max-width: 768px) {
  .container {
    padding: 1rem;
  }

  .header h1 {
    font-size: 1.75rem;
  }

  .controls {
    flex-direction: column;
  }

  .control-group {
    width: 100%;
  }

  .generate-btn {
    width: 100%;
  }

  .card-header {
    flex-direction: column;
    gap: 1rem;
    text-align: center;
  }

  .hints-table {
    font-size: 0.9rem;
  }

  .hints-table th,
  .hints-table td {
    padding: 0.75rem 0.5rem;
  }

  .answer-text {
    font-size: 1.5rem;
  }

  .metadata {
    flex-direction: column;
    gap: 0.5rem;
    text-align: center;
  }
}

/* Print styles */
@media print {
  .controls,
  .generate-btn,
  .footer {
    display: none;
  }

  .card-display {
    box-shadow: none;
    border: 1px solid var(--border-color);
  }
}