#titlebar {
  -webkit-app-region: drag;
  background: #23272e;
  color: #d4d4d4;
  height: 34px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 12px;
  font-family: "Segoe UI", "Arial", sans-serif;
  border-bottom: 2px solid #20232a;
  border-radius: 10px 10px 0 0;
  box-shadow: 0 2px 8px rgba(0,0,0,0.14);
}

.title {
  font-size: 15px;
  font-weight: 500;
  letter-spacing: 0.5px;
  user-select: none;
}

.controls {
  display: flex;
  align-items: center;
  gap: 2px;
}

.controls button {
  -webkit-app-region: no-drag;
  background: transparent;
  border: none;
  color: #d4d4d4;
  margin-left: 6px;
  font-size: 15px;
  width: 28px;
  height: 28px;
  border-radius: 4px;
  transition: background 0.15s;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  /* Remove all focus outlines */
  outline: none;
}

.controls button:focus {
  outline: none;
}

.controls button:focus-visible {
  outline: none;
}

.controls button:hover {
  background: #313640;
}

.controls button#close:hover {
  background: #e06c75;
}

.controls button#close:hover svg path {
  stroke: #fff;
}

body {
  background: #23272e;
  margin: 0;
  /* VSCode-like border and shadow */
  border: 2px solid #20232a;
  border-radius: 10px;
  box-shadow:
    0 8px 32px 0 rgba(0,0,0,0.22), /* stronger outer shadow */
    0 0 0 2px #23272e inset,         /* inner border for depth */
    0 2px 0 0 #20232a inset;         /* top inner accent */
  overflow: hidden;
  position: relative;
}

#iframe, #webview {
  border: none;
  width: 100vw;
  height: calc(100vh - 34px);
  border-radius: 0 0 10px 10px;
  box-shadow: 0 2px 16px rgba(0,0,0,0.12);
  border-top: 2px solid #20232a;
}

/* Subtle resize indicator at bottom corners */
body::after {
  content: '';
  position: fixed;
  left: 0; right: 0; bottom: 0;
  height: 8px;
  border-radius: 0 0 10px 10px;
  box-shadow: 0 2px 12px rgba(0,0,0,0.14);
  pointer-events: none;
}