* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: -apple-system, Segoe UI, Roboto, sans-serif;
  background: #f4f4f2;
  color: #222;
}
.center-screen {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
}
.card {
  background: #fff;
  border-radius: 12px;
  padding: 32px;
  width: 320px;
  box-shadow: 0 1px 4px rgba(0,0,0,0.1);
}
.card h1 { font-size: 20px; margin: 0 0 20px; }
input, select {
  width: 100%;
  padding: 10px;
  margin-bottom: 12px;
  border: 1px solid #ccc;
  border-radius: 6px;
  font-size: 14px;
}
button {
  width: 100%;
  padding: 10px;
  border: none;
  border-radius: 6px;
  background: #2b6cb0;
  color: #fff;
  font-size: 14px;
  cursor: pointer;
}
button:hover { background: #245a94; }
button.secondary { background: #888; }
.error { color: #c0392b; font-size: 13px; margin-bottom: 8px; }

header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 24px;
  background: #fff;
  box-shadow: 0 1px 4px rgba(0,0,0,0.08);
}
header a { text-decoration: none; color: #222; font-weight: 600; }
.user-menu { position: relative; }
.user-menu button.icon {
  width: auto; background: #eee; color: #222; border-radius: 20px; padding: 8px 16px;
}
.user-menu .dropdown {
  display: none;
  position: absolute;
  right: 0;
  top: 44px;
  background: #fff;
  border-radius: 8px;
  box-shadow: 0 2px 10px rgba(0,0,0,0.15);
  min-width: 200px;
  padding: 8px;
  z-index: 10;
}
.user-menu .dropdown.open { display: block; }
.user-menu .dropdown div { padding: 8px 10px; font-size: 13px; color: #555; }
.user-menu .dropdown button { margin-top: 4px; }

.tiles {
  display: flex;
  gap: 24px;
  justify-content: center;
  align-items: center;
  height: calc(100vh - 80px);
  flex-wrap: wrap;
}
.tile {
  width: 220px;
  height: 220px;
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  font-weight: 600;
  color: #fff;
  cursor: pointer;
  border: none;
  transition: transform 0.1s;
}
.tile:hover { transform: scale(1.03); }
.tile.gemini { background: #4285f4; }
.tile.claude { background: #d97757; }
.tile.chatgpt { background: #10a37f; }

.browser-frame {
  width: 100%;
  height: calc(100vh - 64px);
  border: none;
}

table { width: 100%; border-collapse: collapse; background: #fff; border-radius: 8px; overflow: hidden; }
th, td { text-align: left; padding: 10px 14px; border-bottom: 1px solid #eee; font-size: 14px; }
th { background: #f7f7f5; }
.admin-wrap { max-width: 900px; margin: 24px auto; padding: 0 16px; }
.row-actions button { width: auto; padding: 4px 10px; font-size: 12px; margin-right: 4px; }