/* CSS Variables */
:root {
  --primary-color: #ff6b35;
  --secondary-color: #4a90d9;
  --bg-color: #1a1a2e;
  --card-bg: #16213e;
  --text-color: #eee;
  --text-secondary: #aaa;
  --border-color: #333;
  --accent-color: #f7c548;
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  background: linear-gradient(135deg, #1a1a2e 0%, #0f0f23 100%);
  min-height: 100vh;
  color: var(--text-color);
  overflow-x: hidden;
}

/* Container */
.container {
  max-width: 600px;
  margin: 0 auto;
  min-height: 100vh;
  padding: 20px;
}

/* Pages */
.page {
  display: none;
  min-height: 100vh;
  animation: fadeIn 0.3s ease;
}

.page.active {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
}

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

/* Home Page */
.home-content {
  text-align: center;
  padding: 40px 20px;
}

.title {
  font-size: 2.5rem;
  font-weight: 800;
  background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 10px;
}

.subtitle {
  font-size: 1.2rem;
  color: var(--text-secondary);
  margin-bottom: 30px;
}

.home-description {
  background: var(--card-bg);
  border-radius: 16px;
  padding: 24px;
  margin-bottom: 30px;
  border: 1px solid var(--border-color);
}

.home-description p {
  margin: 8px 0;
  color: var(--text-color);
  font-size: 0.95rem;
}

.start-btn {
  background: linear-gradient(135deg, var(--primary-color), #ff8c5a);
  color: white;
  border: none;
  padding: 18px 60px;
  font-size: 1.2rem;
  font-weight: 600;
  border-radius: 50px;
  cursor: pointer;
  transition: transform 0.2s, box-shadow 0.2s;
  box-shadow: 0 4px 20px rgba(255, 107, 53, 0.4);
}

.start-btn:hover {
  transform: scale(1.05);
  box-shadow: 0 6px 30px rgba(255, 107, 53, 0.5);
}

.start-btn:active {
  transform: scale(0.98);
}

.home-footer {
  margin-top: 40px;
  color: var(--text-secondary);
  font-size: 0.85rem;
}

/* Quiz Page */
.quiz-header {
  width: 100%;
  padding: 20px;
  position: fixed;
  top: 0;
  left: 0;
  background: var(--bg-color);
  z-index: 100;
}

.progress-container {
  background: var(--card-bg);
  border-radius: 10px;
  height: 8px;
  overflow: hidden;
  margin-bottom: 8px;
}

.progress-bar {
  background: linear-gradient(90deg, var(--primary-color), var(--accent-color));
  height: 100%;
  border-radius: 10px;
  transition: width 0.3s ease;
  width: 0%;
}

.progress-text {
  font-size: 0.85rem;
  color: var(--text-secondary);
  text-align: right;
  display: block;
}

.quiz-content {
  width: 100%;
  padding: 100px 20px 40px;
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.question-text {
  font-size: 1.3rem;
  font-weight: 600;
  margin-bottom: 30px;
  line-height: 1.5;
  text-align: center;
}

.options-container {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.option-btn {
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  color: var(--text-color);
  padding: 18px 24px;
  border-radius: 12px;
  font-size: 1rem;
  cursor: pointer;
  transition: all 0.2s;
  text-align: left;
  line-height: 1.4;
}

.option-btn:hover {
  background: rgba(255, 107, 53, 0.1);
  border-color: var(--primary-color);
}

.option-btn:active {
  transform: scale(0.98);
}

/* Result Page */
.result-content {
  text-align: center;
  padding: 40px 20px;
  width: 100%;
}

.result-intro {
  font-size: 1rem;
  color: var(--text-secondary);
  margin-bottom: 20px;
}

.result-label {
  font-size: 3rem;
  font-weight: 800;
  background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 10px;
  line-height: 1.2;
}

.result-emoji {
  font-size: 4rem;
  display: block;
  margin-bottom: 10px;
}

.result-description {
  font-size: 1.1rem;
  color: var(--text-color);
  margin-bottom: 10px;
  line-height: 1.6;
  padding: 0 10px;
}

.result-detail {
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: 16px;
  padding: 20px;
  margin: 20px auto;
  max-width: 500px;
  text-align: left;
}

.result-detail-title {
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin-bottom: 12px;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.result-detail-text {
  font-size: 0.95rem;
  color: var(--text-color);
  line-height: 1.8;
}

/* Share Card */
.share-card {
  background: #1a1a2e;
  border-radius: 20px;
  padding: 24px;
  margin: 20px auto;
  max-width: 360px;
  border: 1px solid var(--border-color);
  display: none;
}

.share-card.show,
.share-card.html2canvas-render {
  display: block;
  animation: scaleIn 0.3s ease;
}

@keyframes scaleIn {
  from { opacity: 0; transform: scale(0.9); }
  to { opacity: 1; transform: scale(1); }
}

.share-card-content {
  display: flex;
  flex-direction: column;
  gap: 10px;
  align-items: center;
  background: transparent;
}

.share-label {
  font-size: 0.75rem;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 2px;
}

.share-big-label {
  font-size: 2rem;
  font-weight: 800;
  background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  text-align: center;
  line-height: 1.2;
}

.share-description {
  font-size: 0.85rem;
  color: var(--text-color);
  line-height: 1.5;
  text-align: center;
}

.share-detail {
  font-size: 0.75rem;
  color: var(--text-secondary);
  line-height: 1.7;
  text-align: left;
  margin-top: 12px;
  padding: 12px;
  background: rgba(0,0,0,0.25);
  border-radius: 10px;
  align-self: stretch;
}

.share-emoji {
  font-size: 3.5rem;
  margin-top: 8px;
}

.result-actions {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-top: 30px;
  padding: 0 20px;
}

.action-btn {
  border: none;
  padding: 16px 32px;
  font-size: 1rem;
  font-weight: 600;
  border-radius: 12px;
  cursor: pointer;
  transition: all 0.2s;
}

.action-btn.primary {
  background: linear-gradient(135deg, var(--primary-color), #ff8c5a);
  color: white;
  box-shadow: 0 4px 15px rgba(255, 107, 53, 0.3);
}

.action-btn.primary:hover {
  box-shadow: 0 6px 25px rgba(255, 107, 53, 0.4);
}

.action-btn.secondary {
  background: var(--card-bg);
  color: var(--text-color);
  border: 1px solid var(--border-color);
}

.action-btn.secondary:hover {
  background: rgba(255, 107, 53, 0.1);
}

/* Utility */
.hidden {
  display: none !important;
}

/* Responsive */
@media (max-width: 480px) {
  .title {
    font-size: 2rem;
  }

  .result-label {
    font-size: 2.2rem;
  }

  .question-text {
    font-size: 1.1rem;
  }

  .option-btn {
    padding: 14px 18px;
    font-size: 0.95rem;
  }
}

/* Loading animation for download */
.btn-loading {
  position: relative;
  pointer-events: none;
}

.btn-loading::after {
  content: '';
  position: absolute;
  width: 20px;
  height: 20px;
  border: 2px solid transparent;
  border-top-color: currentColor;
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  right: 15px;
  top: 50%;
  transform: translateY(-50%);
}

@keyframes spin {
  to { transform: translateY(-50%) rotate(360deg); }
}