html, body {
  height: 100%;
  margin: 0;
  padding: 0;
  background: #111;
  color: white;
  font-family: 'Segoe UI', sans-serif;
}

#tab-bar {
  display: flex;
  padding-left: 80px; /* leave room for macOS traffic lights */
  overflow-x: auto; /* allow scrolling when many tabs */
  /* custom scrollbar styling */
  scrollbar-color: #444 #2a2a3c;   /* thumb and track for Firefox */
  scrollbar-width: thin;            /* slimmer track */
}

#tab-bar > * {
  flex: 1 1 0;
  text-align: center;
  overflow: hidden;
  white-space: nowrap;
  text-overflow: ellipsis;
}

/* NAVBAR LAYOUT */
#nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 6px 10px;
  background: #1e1e2e;
  gap: 12px;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
}

.nav-left,
.nav-center,
.nav-right {
  display: flex;
  align-items: center;
  gap: 8px;
}

.nav-center {
  flex: 1;
  background: #2a2a3c;
  padding: 4px 6px;
  border-radius: 6px;
}

#favicon {
  width: 16px;
  height: 16px;
  margin-right: 4px;
}

#url {
  flex: 1;
  background: transparent;
  border: none;
  color: white;
  font-size: 14px;
  outline: none;
}

#url::placeholder {
  color: rgba(255, 255, 255, 0.5);
}

#nav button {
  background: #333;
  color: white;
  border: none;
  padding: 6px 10px;
  border-radius: 5px;
  cursor: pointer;
  transition: background 0.2s;
}

#nav button:hover {
  background: #555;
}

/* MENU DROPDOWN */
.menu-wrapper {
  position: relative;
}

#menu-popup {
  position: absolute;
  top: 30px;
  right: 0;
  background: #2a2a3c;
  border-radius: 4px;
  padding: 4px;
  display: flex;
  flex-direction: column;
  min-width: 200px;  /* wider dropdown */
  box-shadow: 0 2px 6px rgba(0,0,0,0.4);
  z-index: 100;
}

#menu-popup button {
  background: none;
  border: none;
  color: white;
  text-align: left;
  padding: 6px 10px;
  border-radius: 4px;
}

#menu-popup button:hover {
  background: #444;
}

.hidden {
  display: none;
}

#menu-popup.hidden {
  display: none;
}

/* WEBVIEWS */
#webviews {
  flex: 1;
  display: flex;
  width: 100%;
  position: relative;
}

#webviews webview {
  flex: 1;
  display: none;
  border: none;
}

#webviews webview.active {
  display: flex;
}

/* TABS */
.tab {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 6px 8px;
  margin: 4px 4px 0 0;
  background: #222;
  border-radius: 8px 8px 0 0;
  cursor: pointer;
  transition: background 0.2s, flex 0.2s;
  min-width: 80px; /* prevent tabs from getting too small */
}

.tab:hover {
  background: #333;
}

.tab.active {
  background: #444;
  font-weight: bold;
  flex: 3 1 0; /* increased grow factor for larger active tab */
  min-width: 120px; /* larger min width for the active tab */
}

.tab img {
  width: 16px;
  height: 16px;
  margin-right: 6px;
  border-radius: 2px;
}

.tab button {
  margin-left: 8px;
  background: none;
  border: none;
  color: #f55;
  font-weight: bold;
  cursor: pointer;
}

/* ZOOM CONTROLS */
.zoom-controls {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 10px;
}
.zoom-controls .zoom-label {
  flex: 1;
  font-size: 14px;
}
.zoom-controls button {
  background: none;
  border: none;
  color: white;
  font-size: 16px;
  cursor: pointer;
  padding: 2px 6px;
  border-radius: 4px;
}
.zoom-controls button:hover {
  background: #444;
}
#zoom-percent {
  min-width: 36px;
  text-align: center;
  font-size: 14px;
}

/* window controls (Windows only) */
#window-controls {
  position: absolute;
  top: 0;
  right: 0;
  display: flex;
  gap: 2px;
  padding: 4px;
  z-index: 200;
}
#window-controls button {
  width: 46px;
  height: 28px;
  background: transparent;
  border: none;
  color: white;
  font-size: 12px;
  cursor: pointer;
  transition: background 0.2s;
}
#window-controls button:hover {
  background: rgba(255,255,255,0.1);
}
#window-controls #close-btn:hover {
  background: #e81123;
}

#tab-bar::-webkit-scrollbar {
  height: 8px;                      /* horizontal scrollbar height */
}
#tab-bar::-webkit-scrollbar-track {
  background: #2a2a3c;
  border-radius: 4px;
}
#tab-bar::-webkit-scrollbar-thumb {
  background: #444;
  border-radius: 4px;
}
#tab-bar::-webkit-scrollbar-thumb:hover {
  background: #555;
}