#window {
  width: min(900px, 96vw);
  height: min(78vh, 640px);
  background: var(--win);
  border: 3px solid var(--ink);
  box-shadow: 6px 6px 0 rgba(26,26,26,.45);
  display: flex; flex-direction: column;
  font-family: var(--font-mono);
}
.titlebar {
  display: flex; align-items: flex-end; gap: 12px;
  padding: 7px 10px 0;
  border-bottom: 3px solid var(--ink);
  background: repeating-linear-gradient(180deg, var(--win) 0 3px, var(--win-dark) 3px 6px);
}
.titlebar .traffic-lights { padding-bottom: 7px; }
/* toolbar browser: back / forward / reload + address bar */
.toolbar {
  display: flex; align-items: center; gap: 10px;
  padding: 6px 10px; border-bottom: 3px solid var(--ink);
  background: var(--win-dark);
}
.nav-btns { display: flex; gap: 4px; flex: 0 0 auto; }
.nav-btn {
  width: 26px; height: 26px; padding: 0; line-height: 1;
  font-family: var(--font-pixel); font-size: 15px; color: var(--ink);
  border: 2px solid var(--ink); background: var(--win);
}
.nav-btn:active { transform: translate(1px, 1px); }
.urlbar {
  flex: 1; min-width: 0; display: flex; align-items: center; gap: 8px;
  border: 2px solid var(--ink); background: var(--surface); padding: 3px 10px;
  font-family: var(--font-mono); font-size: 12px;
}
.url-lock { font-size: 10px; }
.url-text { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.traffic-lights { display: flex; gap: 12px; }
.traffic-lights button {
  width: 14px; height: 14px; border: 2px solid var(--ink);
  padding: 0; background: var(--tl-red);
  position: relative;
}
.traffic-lights button::after { content: ''; position: absolute; inset: -6px; }
.traffic-lights .tl-yellow { background: var(--tl-yellow); }
.traffic-lights .tl-green { background: var(--tl-green); }
/* tab strip di dalam titlebar — seperti tab browser */
.tabbar { display: flex; gap: 4px; align-items: flex-end; flex: 1; min-width: 0; }
.tab {
  font-family: var(--font-pixel); font-size: 12px;
  padding: 6px 12px; color: var(--ink);
  border: 3px solid var(--ink); border-bottom: 0;
  background: var(--win-dark);
  position: relative; top: 3px;
}
.tab[aria-selected="true"] { background: var(--win); font-weight: 700; top: 3px; padding-bottom: 9px; }
.tab:active { transform: translateY(2px); box-shadow: inset 2px 2px 0 rgba(26,26,26,.3); }
.traffic-lights button:active { transform: translate(1px, 1px); }
.tabpanels { flex: 1; overflow-y: auto; background: var(--win); }
.panel { padding: 20px 24px; }
.panel[hidden] { display: none; }
#window.maximized { width: 96vw; height: calc(100vh - 140px); }
#window.minimized { display: none; }
@keyframes winshake { 0%,100% { transform: translateX(0); } 25% { transform: translateX(-8px); } 75% { transform: translateX(8px); } }
#window.shake { animation: winshake .3s steps(2) 2; }
.toast {
  position: fixed; top: 24px; left: 50%; transform: translateX(-50%);
  font-family: var(--font-pixel); font-size: 13px;
  background: var(--ink); color: var(--win); padding: 8px 14px;
  border: 3px solid var(--win); box-shadow: 4px 4px 0 rgba(0,0,0,.4); z-index: 30;
}
#dock.holds-window .dock-item.active svg { opacity: .5; }
@media (max-width: 640px) {
  #window { width: 96vw; height: min(84vh, calc(100vh - 120px)); height: min(84dvh, calc(100dvh - 120px)); }
  .tabbar { overflow-x: auto; }
  .tab { font-size: 11px; padding: 8px 10px; white-space: nowrap; flex: 0 0 auto; }
  .panel { padding: 14px; }
  .hero { flex-direction: column; align-items: flex-start; }
}