:root {
  --primary-color: #4CAF50;
  --secondary-color: #2196F3;
  --accent-color: #4CAF50;
  --bg-color: #ffffff;
  --text-color: #333333;
  --border-color: #e0e0e0;
  --hover-color: #f5f5f5;
  --sidebar-width: 240px;
  --widget-width: 280px;
  --footer-bg: #2c2c2c;
  --footer-text: #cccccc;
  --card-bg: #ffffff;
  --card-shadow: 0 2px 8px rgba(0,0,0,0.08);
  --transition: 0.3s ease;
  --navbar-height: 120px;
}
body.dark-mode {
  --bg-color: #0f0f1a;
  --text-color: #e0e0e0;
  --border-color: #2a2a4e;
  --hover-color: #1a1a2e;
  --card-bg: #13131f;
  --card-shadow: 0 2px 8px rgba(0,0,0,0.5);
}
body.cyberpunk {
  --bg-color: #0d0d1a;
  --text-color: #e0e0ff;
  --border-color: #2a0a4e;
  --hover-color: #1a0a2e;
  --card-bg: #10101e;
  --card-shadow: 0 2px 16px rgba(150,0,255,0.15);
  --primary-color: #b700ff;
  --secondary-color: #00f0ff;
  --accent-color: #b700ff;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  background-color: var(--bg-color);
  color: var(--text-color);
  transition: background-color var(--transition), color var(--transition);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  animation: pageFadeIn 0.4s ease;
}
@keyframes pageFadeIn { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: none; } }
a { color: var(--secondary-color); text-decoration: none; }
a:hover { text-decoration: underline; }
ul { list-style: none; }
.main-wrapper { display: flex; flex: 1; overflow: hidden; min-height: calc(100vh - var(--navbar-height) - 180px); }
#scroll-top {
  position: fixed; bottom: 28px; right: 28px;
  width: 44px; height: 44px; border-radius: 50%;
  background: var(--primary-color); color: #fff;
  border: none; font-size: 1.2rem; cursor: pointer;
  box-shadow: 0 4px 16px rgba(0,0,0,0.25);
  opacity: 0; pointer-events: none;
  transition: opacity var(--transition), transform var(--transition);
  z-index: 1500; display: flex; align-items: center; justify-content: center;
}
#scroll-top.visible { opacity: 1; pointer-events: all; }
#scroll-top:hover { transform: translateY(-3px); }
#toast-container {
  position: fixed; bottom: 80px; right: 24px;
  z-index: 3000; display: flex; flex-direction: column; gap: 8px;
}
.toast {
  background: var(--card-bg); border: 1px solid var(--border-color);
  border-left: 4px solid var(--primary-color);
  border-radius: 8px; padding: 12px 18px;
  font-size: 0.88rem; color: var(--text-color);
  box-shadow: 0 4px 16px rgba(0,0,0,0.15);
  animation: toastIn 0.3s ease; min-width: 220px;
}
@keyframes toastIn { from { opacity: 0; transform: translateX(40px); } to { opacity: 1; transform: none; } }
#loading-bar {
  position: fixed; top: 0; left: 0; height: 3px;
  background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
  z-index: 9999; width: 0; transition: width 0.3s ease;
}
#cmd-overlay {
  display: none; position: fixed; inset: 0;
  background: rgba(0,0,0,0.6); z-index: 4000;
  align-items: flex-start; justify-content: center; padding-top: 80px;
}
#cmd-overlay.open { display: flex; }
#cmd-palette {
  background: var(--card-bg); border: 1px solid var(--border-color);
  border-radius: 14px; width: 100%; max-width: 560px;
  box-shadow: 0 20px 60px rgba(0,0,0,0.3); overflow: hidden;
}
#cmd-input-row {
  display: flex; align-items: center; gap: 10px;
  padding: 16px 18px; border-bottom: 1px solid var(--border-color);
}
#cmd-input-row span { font-size: 1rem; color: #888; }
#cmd-input { flex: 1; border: none; outline: none; background: transparent; color: var(--text-color); font-size: 1rem; }
#cmd-hint { font-size: 0.75rem; color: #aaa; white-space: nowrap; }
#cmd-results { max-height: 360px; overflow-y: auto; }
.cmd-item {
  display: flex; align-items: center; gap: 12px;
  padding: 12px 18px; font-size: 0.9rem;
  color: var(--text-color); cursor: pointer;
  transition: background var(--transition);
}
.cmd-item:hover, .cmd-item.focused { background: var(--hover-color); }
.cmd-item .cmd-emoji { font-size: 1.1rem; width: 24px; text-align: center; }
.cmd-section { padding: 8px 18px 4px; font-size: 0.72rem; font-weight: 700; text-transform: uppercase; letter-spacing: 1px; color: #888; }
@media (max-width: 1024px) { :root { --sidebar-width: 0px; } }
@media (max-width: 768px)  { :root { --widget-width: 0px; } }