@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&family=JetBrains+Mono:wght@400;500&display=swap');

:root,
html[data-theme="light"],
.github-stats-card[data-theme="light"] {
  --bg-color: #f8f9fa;
  --card-bg: #ffffff;
  --card-border: #dadce0;
  --text-primary: #202124;
  --text-secondary: #5f6368;
  --accent: #1a73e8;
  --accent-hover: #174ea6;
  --card-shadow: 0 1px 2px 0 rgba(60,64,67,0.1), 0 2px 6px 2px rgba(60,64,67,0.05);
  
  --topic-bg: #e8f0fe;
  --topic-text: #1967d2;
  --layer-bg: #ffffff;
  --layer-alt: #f8f9fa;
  --spinner-border: #e8eaed;

  --font-main: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
  --border-radius: 8px;
}

@media (prefers-color-scheme: dark) {
  html:not([data-theme="light"]),
  .github-stats-card:not([data-theme="light"]) {
    --bg-color: #0d1117;
    --card-bg: #161b22;
    --card-border: #30363d;
    --text-primary: #c9d1d9;
    --text-secondary: #8b949e;
    --accent: #58a6ff;
    --accent-hover: #79c0ff;
    --card-shadow: 0 1px 4px rgba(0,0,0,0.8);
    
    --topic-bg: rgba(88, 166, 255, 0.15);
    --topic-text: #58a6ff;
    --layer-bg: #0d1117;
    --layer-alt: #010409;
    --spinner-border: #30363d;
  }
}

html[data-theme="dark"],
.github-stats-card[data-theme="dark"] {
  --bg-color: #0d1117;
  --card-bg: #161b22;
  --card-border: #30363d;
  --text-primary: #c9d1d9;
  --text-secondary: #8b949e;
  --accent: #58a6ff;
  --accent-hover: #79c0ff;
  --card-shadow: 0 1px 4px rgba(0,0,0,0.8);
  
  --topic-bg: rgba(88, 166, 255, 0.15);
  --topic-text: #58a6ff;
  --layer-bg: #0d1117;
  --layer-alt: #010409;
  --spinner-border: #30363d;
}

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

body {
  background-color: var(--bg-color);
  color: var(--text-primary);
  font-family: var(--font-main);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  line-height: 1.5;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.app-container {
  width: 100%;
  max-width: 900px;
  padding: 60px 20px;
  display: flex;
  flex-direction: column;
  gap: 40px;
}

header {
  text-align: center;
}

h1 {
  font-size: 2.5rem;
  font-weight: 700;
  margin-bottom: 12px;
  color: var(--text-primary);
  letter-spacing: -0.02em;
}

header p {
  color: var(--text-secondary);
  font-size: 1.1rem;
}

.search-section {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
}

.search-form {
  display: flex;
  width: 100%;
  max-width: 560px;
  gap: 12px;
}

.search-input {
  flex: 1;
  padding: 14px 20px;
  border-radius: 24px;
  border: 1px solid var(--card-border);
  background: var(--card-bg);
  color: var(--text-primary);
  font-family: var(--font-mono);
  font-size: 1rem;
  outline: none;
  transition: box-shadow 0.2s, border-color 0.2s;
  box-shadow: 0 1px 2px 0 rgba(0,0,0,0.05);
}

.search-input:focus {
  border-color: var(--accent);
  box-shadow: 0 1px 6px rgba(26,115,232,0.15);
}

.theme-select {
  padding: 0 16px;
  border-radius: 24px;
  border: 1px solid var(--card-border);
  background: var(--card-bg);
  color: var(--text-primary);
  font-family: var(--font-main);
  font-size: 0.95rem;
  font-weight: 500;
  outline: none;
  cursor: pointer;
  transition: box-shadow 0.2s, border-color 0.2s;
  box-shadow: 0 1px 2px 0 rgba(0,0,0,0.05);
}

.theme-select:focus {
  border-color: var(--accent);
  box-shadow: 0 1px 6px rgba(26,115,232,0.15);
}

.btn {
  padding: 0 24px;
  border-radius: 24px;
  border: none;
  background-color: var(--accent);
  color: #fff;
  font-weight: 500;
  font-family: var(--font-main);
  font-size: 0.95rem;
  cursor: pointer;
  transition: background-color 0.2s, transform 0.1s;
}

.btn:hover {
  background-color: var(--accent-hover);
}

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

.error-message {
  color: #d93025;
  font-size: 0.9rem;
  display: none;
  font-weight: 500;
}

.embed-container {
  display: none;
  flex-direction: column;
  gap: 8px;
  width: 100%;
  max-width: 560px;
  margin: 0 auto;
}

.embed-container label {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.embed-input-group {
  display: flex;
  gap: 8px;
}

.embed-input-group input {
  flex: 1;
  background: var(--layer-alt);
  border: 1px solid var(--card-border);
  border-radius: var(--border-radius);
  padding: 12px 16px;
  color: var(--text-primary);
  font-family: var(--font-mono);
  font-size: 0.85rem;
}

.embed-input-group input:focus {
  background: var(--layer-bg);
  border-color: var(--accent);
  outline: none;
}

.embed-input-group .btn {
  border-radius: var(--border-radius);
}

.github-stats-card {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--border-radius);
  padding: 32px;
  box-shadow: var(--card-shadow);
  display: flex;
  flex-direction: column;
  gap: 24px;
  position: relative;
  overflow: hidden;
  width: 100%;
  max-width: 800px;
  margin: 0 auto;
}

.card-header {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.repo-title {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 1.5rem;
  font-weight: 600;
  letter-spacing: -0.01em;
}

.repo-title a {
  color: var(--accent);
  text-decoration: none;
}

.repo-title a:hover {
  text-decoration: underline;
}

.repo-title .octicon {
  fill: var(--text-secondary);
}

.repo-description {
  color: var(--text-secondary);
  font-size: 1rem;
  line-height: 1.6;
}

.topics-container {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 6px;
}

.topic-chip {
  background: var(--topic-bg);
  color: var(--topic-text);
  padding: 4px 12px;
  border-radius: 16px;
  font-size: 0.8rem;
  font-weight: 500;
}

.card-grid {
  display: grid;
  grid-template-columns: 1.2fr 1.8fr;
  gap: 24px;
}

@media (max-width: 768px) {
  .card-grid { grid-template-columns: 1fr; }
}

.chart-section {
  display: flex;
  flex-direction: column;
  gap: 16px;
  background: var(--layer-bg);
  border-radius: var(--border-radius);
  padding: 20px;
  border: 1px solid var(--card-border);
}

.pie-layout {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 20px;
}

.canvas-container {
  width: 160px;
  height: 160px;
  position: relative;
  flex-shrink: 0;
}

.language-pills {
  display: flex;
  flex-direction: column;
  gap: 8px;
  width: 100%;
}

.lang-pill {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 12px;
  border-radius: 6px;
  font-size: 0.9rem;
  border: 1px solid var(--card-border);
  background: var(--layer-alt);
}

.lang-icon {
  width: 16px;
  height: 16px;
}

.lang-color-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
}

.lang-name {
  color: var(--text-primary);
  font-weight: 500;
  flex: 1;
}

.lang-pct {
  font-weight: 600;
  font-family: var(--font-mono);
}

.stars-graph-container {
  height: 250px;
  width: 100%;
  position: relative;
  margin-top: 15px;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin-bottom: auto;
}

@media (max-width: 500px) {
  .stats-grid { grid-template-columns: repeat(2, 1fr); }
}

.stat-item {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  padding: 16px;
  background: var(--layer-alt);
  border-radius: var(--border-radius);
  border: 1px solid var(--card-border);
}

.stat-val {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -0.02em;
}

.stat-lbl {
  font-size: 0.8rem;
  color: var(--text-secondary);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-top: 4px;
}

.contributors-container {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding-top: 24px;
  border-top: 1px solid var(--card-border);
}

.contributors-header {
  font-size: 0.85rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-secondary);
}

.contributors-list {
  display: flex;
  gap: 8px;
}

.contrib-avatar {
  border-radius: 50%;
  width: 36px;
  height: 36px;
  overflow: hidden;
  border: 1px solid var(--card-border);
  position: relative;
  transition: transform 0.2s;
}

.contrib-avatar:hover {
  transform: scale(1.1) translateY(-2px);
  z-index: 10;
}

.contrib-avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.loading-overlay {
  position: absolute;
  inset: 0;
  background: var(--card-bg);
  opacity: 0.9;
  display: none;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  z-index: 50;
  gap: 16px;
}

.spinner {
  width: 36px;
  height: 36px;
  border: 3px solid var(--spinner-border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

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

.github-stats-card.loading .loading-overlay {
  display: flex;
}