:root {
  --bg-color: #ffffff;
  --text-color: #202124;
  --secondary-text: #5f6368;
  --border-color: #dfe1e5;
  --hover-shadow: 0 1px 6px rgba(32, 33, 36, 0.28);
  --primary-blue: #1a73e8;
  --link-color: #1a0dab;
  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
}

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

body {
  font-family: var(--font-family);
  background-color: var(--bg-color);
  color: var(--text-color);
  display: flex;
  flex-direction: column;
  align-items: center;
  min-height: 100vh;
  transition: all 0.3s ease;
}

.container {
  width: 100%;
  max-width: 600px;
  display: flex;
  flex-direction: column;
  align-items: center;
  margin-top: 25vh;
  transition: margin-top 0.5s cubic-bezier(0.25, 0.8, 0.25, 1);
  padding: 0 20px;
}

.container.active {
  margin-top: 5vh;
}

.logo-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  margin-bottom: -40px;
}

.main-logo {
  max-width: 750px;
  max-height: 250px;
  object-fit: contain;
  user-select: none;
}

.search-wrapper {
  width: 100%;
  position: relative;
}

.search-box {
  width: 100%;
  padding: 14px 24px 14px 48px;
  font-size: 16px;
  border: 1px solid var(--border-color);
  border-radius: 24px;
  outline: none;
  transition: box-shadow 0.2s ease;
}

.search-box:hover, .search-box:focus {
  box-shadow: var(--hover-shadow);
  border-color: rgba(223,225,229,0);
}

.search-icon {
  position: absolute;
  left: 16px;
  top: 50%;
  transform: translateY(-50%);
  color: #9aa0a6;
  width: 20px;
  height: 20px;
}

.loading-spinner {
  position: absolute;
  right: 16px;
  top: 50%;
  transform: translateY(-50%);
  width: 20px;
  height: 20px;
  border: 2px solid #f3f3f3;
  border-top: 2px solid var(--primary-blue);
  border-radius: 50%;
  animation: spin 1s linear infinite;
  display: none;
}

@keyframes spin {
  0% { transform: translateY(-50%) rotate(0deg); }
  100% { transform: translateY(-50%) rotate(360deg); }
}

.results-container {
  width: 100%;
  max-width: 600px;
  margin-top: 30px;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s ease;
  padding: 0 20px 40px;
}

.results-container.active {
  opacity: 1;
  visibility: visible;
}

.result-item {
  margin-bottom: 20px;
  animation: slideUp 0.3s ease forwards;
}

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

.result-item a {
  text-decoration: none;
}

.result-item h3 {
  color: var(--link-color);
  font-size: 18px;
  font-weight: 400;
  line-height: 1.2;
  margin-bottom: 4px;
}

.result-item a:hover h3 {
  text-decoration: underline;
}

.result-url {
  color: #202124;
  font-size: 14px;
  line-height: 1.3;
}

.result-cite {
  color: var(--secondary-text);
  font-size: 12px;
  line-height: 1.3;
  margin-top: 2px;
}

.status-message {
  color: var(--secondary-text);
  font-size: 14px;
  margin-bottom: 20px;
}

/* Scrollbar styling */
::-webkit-scrollbar {
  width: 8px;
}
::-webkit-scrollbar-track {
  background: transparent;
}
::-webkit-scrollbar-thumb {
  background: #dadce0;
  border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
  background: #bdc1c6;
}