:root {
  --bg: #f5f6fa;
  --surface: #ffffff;
  --border: #e2e4ea;
  --text: #1c1e26;
  --text-muted: #6b6f7d;
  --accent: #5b5ce0;
  --accent-bg: #edecff;
  --common: #1fa672;
  --common-bg: #e5f7ef;
  --radius: 10px;
  --shadow: 0 2px 8px rgba(20, 20, 40, 0.06);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  padding: 0;
  font-family: "Segoe UI", Arial, sans-serif;
  background-color: var(--bg);
  color: var(--text);
}

/* Header */
.app-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  padding: 16px 20px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 20px;
}

.app-header h1 {
  margin: 0;
  font-size: 20px;
  white-space: nowrap;
  color: var(--accent);
}

.search-container {
  flex: 1;
  min-width: 240px;
  max-width: 520px;
  position: relative;
}

#search {
  width: 100%;
  padding: 10px 14px;
  font-size: 15px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  outline: none;
  transition: border-color 0.15s;
}

#search:focus {
  border-color: var(--accent);
}

#suggestions {
  list-style-type: none;
  margin: 4px 0 0;
  padding: 0;
  position: absolute;
  width: 100%;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  max-height: 260px;
  overflow-y: auto;
  z-index: 30;
  box-shadow: var(--shadow);
}

#suggestions:empty {
  border: none;
  box-shadow: none;
}

#suggestions li {
  padding: 10px 14px;
  cursor: pointer;
  font-size: 14px;
}

#suggestions li:hover,
#suggestions li.active {
  background-color: var(--accent-bg);
}

/* Main layout */
.main-container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 24px 20px 60px;
}

.empty-state,
.loading-state {
  text-align: center;
  color: var(--text-muted);
  margin-top: 60px;
  font-size: 15px;
}

/* Source card */
.source-card {
  display: flex;
  gap: 20px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  margin-bottom: 20px;
  box-shadow: var(--shadow);
}

.source-card img {
  width: 100px;
  height: 140px;
  object-fit: cover;
  border-radius: 6px;
  flex-shrink: 0;
}

.source-card .source-info h2 {
  margin: 0 0 8px;
  font-size: 20px;
}

.source-card .source-info p {
  margin: 0 0 10px;
  font-size: 14px;
  color: var(--text-muted);
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.badge-row {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.badge {
  font-size: 12px;
  padding: 3px 9px;
  border-radius: 999px;
  background: var(--accent-bg);
  color: var(--accent);
}

.summary {
  font-size: 14px;
  color: var(--text-muted);
  margin: 0 0 20px;
}

.summary strong {
  color: var(--common);
}

/* Comparison columns */
.comparison {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 28px;
}

.result-column:first-child {
  border-right: 1px solid var(--border);
  padding-right: 28px;
}

.result-column h2 {
  font-size: 15px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--text-muted);
  margin: 0 0 12px;
}

.grid-container {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
}

.card {
  position: relative;
  background-color: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  cursor: pointer;
  transition:
    transform 0.15s,
    box-shadow 0.15s;
}

.card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow);
}

.card.is-common {
  border-color: var(--common);
  box-shadow: 0 0 0 1px var(--common);
}

.card .common-badge {
  position: absolute;
  top: 6px;
  right: 6px;
  background: var(--common);
  color: white;
  font-size: 10px;
  font-weight: 600;
  padding: 2px 7px;
  border-radius: 999px;
  z-index: 1;
}

.card img {
  width: 100%;
  aspect-ratio: 2 / 3;
  object-fit: cover;
  display: block;
  background: var(--border);
}

.card h3 {
  padding: 8px 10px;
  margin: 0;
  font-size: 13px;
  line-height: 1.3;
}

@media (max-width: 720px) {
  .comparison {
    grid-template-columns: 1fr;
  }

  .result-column:first-child {
    border-right: none;
    padding-right: 0;
    padding-bottom: 20px;
    margin-bottom: 8px;
    border-bottom: 1px solid var(--border);
  }

  .source-card {
    flex-direction: column;
  }

  .source-card img {
    width: 100%;
    height: 200px;
  }
}

@media (max-width: 420px) {
  .grid-container {
    grid-template-columns: repeat(2, 1fr);
  }
}