:root {
  --bg: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  --card: rgba(255, 255, 255, 0.15);
  --text: #ffffff;
  --text-light: rgba(255, 255, 255, 0.8);
  --border: rgba(255, 255, 255, 0.2);
}

[data-theme="light"] {
  --bg: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
  --card: rgba(255, 255, 255, 0.8);
  --text: #333;
  --text-light: #666;
  --border: rgba(0, 0, 0, 0.1);
}

[data-theme="auto"] {
  --bg: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

@media (prefers-color-scheme: light) {
  [data-theme="auto"] {
    --bg: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
    --card: rgba(255, 255, 255, 0.8);
    --text: #333;
    --text-light: #666;
    --border: rgba(0, 0, 0, 0.1);
  }
}

* { margin: 0; padding: 0; box-sizing: border-box; }
body {
  font-family: "Segoe UI", -apple-system, BlinkMacSystemFont, sans-serif;
  background: var(--bg) fixed;
  background-size: cover;
  color: var(--text);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 2rem 1rem;
  transition: background 0.4s;
}

.theme-toggle {
  position: fixed;
  top: 20px;
  right: 20px;
  width: 50px;
  height: 50px;
  border-radius: 50%;
  border: none;
  background: rgba(255, 255, 255, 0.2);
  backdrop-filter: blur(10px);
  cursor: pointer;
  font-size: 22px;
  z-index: 999;
  transition: all 0.3s;
}

header h1 {
  font-size: 3.5rem;
  font-weight: 800;
  margin-bottom: 0.5rem;
  text-shadow: 0 4px 20px rgba(0,0,0,0.3);
}

.top-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 1.5rem;
  justify-content: center;
  margin: 2rem 0;
  max-width: 1200px;
  width: 100%;
}

.widget {
  background: var(--card);
  backdrop-filter: blur(12px);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 1rem 1.5rem;
  flex: 1;
  min-width: 280px;
  text-align: center;
}

#hitokoto { font-style: italic; font-size: 1.1rem; cursor: pointer; }
#weather span { font-size: 1.8rem; font-weight: bold; }

.hot-list { list-style: none; }
.hot-list li { margin: 0.4rem 0; }
.hot-list a { color: var(--text-light); text-decoration: none; font-size: 0.95rem; }
.hot-list a:hover { text-decoration: underline; }
.hot-list .rank { display: inline-block; width: 24px; text-align: right; margin-right: 8px; color: #ff6b6b; }

.search-box { max-width: 680px; width: 100%; margin: 2rem auto; position: relative; }
#search-input {
  width: 100%;
  padding: 1rem 4.5rem 1rem 1.5rem;
  border: none;
  border-radius: 50px;
  background: var(--card);
  border: 1px solid var(--border);
  color: var(--text);
  backdrop-filter: blur(10px);
  font-size: 1.1rem;
  outline: none;
}
.search-btns {
  position: absolute;
  right: 6px;
  top: 6px;
  display: flex;
  gap: 6px;
}
.search-btns button {
  width: 36px; height: 36px;
  border: none;
  border-radius: 50%;
  background: rgba(255,255,255,0.2);
  color: white;
  cursor: pointer;
  transition: 0.3s;
}
.search-btns button.active { background: #fff; color: #333; }

main {
  max-width: 1200px;
  width: 100%;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 2rem;
  margin-top: 2rem;
}

.link-card {
  background: var(--card);
  backdrop-filter: blur(12px);
  border-radius: 16px;
  padding: 1rem;
  text-align: center;
  border: 1px solid var(--border);
  text-decoration: none;
  color: var(--text);
  transition: all 0.3s;
}
.link-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 12px 32px rgba(0,0,0,0.3);
}
.link-card img {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  margin-bottom: 0.8rem;
}

#stats {
  position: fixed;
  bottom: 20px;
  left: 20px;
  background: rgba(0,0,0,0.4);
  padding: 8px 16px;
  border-radius: 50px;
  backdrop-filter: blur(10px);
  font-size: 0.9rem;
}

footer {
  margin-top: 4rem;
  opacity: 0.7;
  font-size: 0.9rem;
}