@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;600&display=swap');

:root {
  --primary-color: #1e40af;
  --hover-color: #1e3a8a;
  --accent-color: #4caf50;
  --text-color: #f8f9fa;
  --container-bg: rgba(30, 30, 40, 0.85);
  --card-bg: #111827;
  --border-radius: 12px;
  --transition-speed: 0.2s;
}

body.light-mode {
  --primary-color: #007bff;
  --hover-color: #0056b3;
  --accent-color: #28a745;
  --text-color: #222;
  --container-bg: rgba(255, 255, 255, 0.95);
  --card-bg: #ffffff;
  background-color: #f0f2f5;
}

body {
  font-family: 'Inter', sans-serif;
  color: var(--text-color);
  background-color: #0b0f1a;
  margin: 0;
  padding: 20px;
  transition: background-color var(--transition-speed);
}

body.light-mode {
  background-color: #f0f2f5;
}

#question-container,
#result-container,
#settings-modal {
  background-color: var(--container-bg);
  padding: 24px;
  border-radius: var(--border-radius);
  max-width: 700px;
  margin: 20px auto;
  box-shadow: 0 0 10px rgba(0, 0, 0, 0.3);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.options-container {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 16px;
}

.option-button {
  padding: 12px 20px;
  cursor: pointer;
  border: none;
  background: var(--primary-color);
  color: white;
  border-radius: var(--border-radius);
  font-weight: 600;
  transition: all var(--transition-speed);
}

.option-button:hover {
  background-color: var(--hover-color);
  transform: scale(1.03);
}

.option-button.selected {
  background-color: var(--accent-color);
}

#next-button,
#save-settings,
#back-button {
  margin-top: 20px;
  padding: 10px 18px;
  font-weight: bold;
  background-color: var(--primary-color);
  color: white;
  border: none;
  border-radius: var(--border-radius);
  transition: all var(--transition-speed);
}

#next-button:hover,
#save-settings:hover,
#back-button:hover {
  background-color: var(--hover-color);
  transform: scale(1.05);
}

.nav-buttons {
  display: flex;
  justify-content: center;
  gap: 16px;
  margin-top: 20px;
}

#progress-bar {
  height: 8px;
  background: var(--accent-color);
  width: 0%;
  border-radius: var(--border-radius);
  transition: width 0.3s ease-in-out;
  margin: 0 auto;
  max-width: 700px;
}

.carousel-item {
  display: inline-block;
  background-color: var(--card-bg);
  color: var(--text-color);
  padding: 12px;
  margin: 10px;
  border-radius: var(--border-radius);
  text-align: center;
  box-shadow: 0 0 6px rgba(0, 0, 0, 0.2);
  width: 160px;
  transition: transform var(--transition-speed);
}

.carousel-item:hover {
  transform: translateY(-4px);
}

.carousel-item img {
  width: 100%;
  height: 240px;
  object-fit: cover;
  border-radius: var(--border-radius);
}

.carousel-item p {
  margin-top: 8px;
  font-size: 0.95rem;
  font-weight: 500;
}

#settings-modal {
  position: fixed;
  top: 0;
  right: 0;
  height: 100vh;
  width: 300px;
  z-index: 1000;
  overflow-y: auto;
  display: none;
  transform: translateX(100%);
  transition: transform 0.3s ease-in-out;
  border-left: 2px solid var(--accent-color);
}

#settings-modal.open {
  display: block;
  transform: translateX(0);
}

#settings-close {
  font-size: 24px;
  float: right;
  color: var(--text-color);
  cursor: pointer;
  margin-bottom: 12px;
}

label {
  display: block;
  margin: 10px 0 6px;
  font-weight: 500;
}

input[type="number"],
select,
input[type="checkbox"] {
  margin-top: 4px;
  padding: 6px;
  font-size: 1rem;
  border-radius: var(--border-radius);
  border: 1px solid #ccc;
  width: 100%;
  max-width: 200px;
}

#settings-button.gear-icon {
  position: fixed;
  bottom: 24px;
  right: 24px;
  font-size: 24px;
  background-color: var(--primary-color);
  color: white;
  width: 52px;
  height: 52px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  border: none;
  box-shadow: 0 0 8px rgba(0,0,0,0.4);
  cursor: pointer;
  z-index: 1010;
  transition: background-color 0.2s ease-in-out, transform 0.2s ease;
  font-family: 'Inter', sans-serif;
  line-height: 1;
  padding: 0;
}

#settings-button.gear-icon:hover {
  background-color: var(--hover-color);
  transform: rotate(15deg) scale(1.05);
}

#settings-backdrop {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100vh;
  backdrop-filter: blur(5px);
  background-color: rgba(0, 0, 0, 0.3);
  z-index: 999;
  display: none;
}

#settings-backdrop.show {
  display: block;
}

.loader {
  border: 6px solid #eee;
  border-top: 6px solid var(--accent-color);
  border-radius: 50%;
  width: 48px;
  height: 48px;
  animation: spin 1s linear infinite;
  margin: 40px auto;
}

@keyframes spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

@media (max-width: 768px) {
  .carousel-item {
    width: 45%;
  }

  #settings-modal {
    width: 100%;
    border-left: none;
    box-shadow: none;
  }
}