body {
  display: flex;
  flex-direction: column;
}

.topbar {
  flex: 0 0 auto;
  height: calc(var(--topbar-h) + var(--safe-top));
  padding: var(--safe-top) var(--sp-4) 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: var(--c-surface);
  border-bottom: var(--bw-sticker) solid var(--c-shadow);
}

.iconbtn {
  width: 42px;
  height: 42px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  border: 0;
  border-radius: var(--r-md);
  color: var(--c-ink);
  font-size: 20px;
  cursor: pointer;
  flex: 0 0 auto;
  position: relative;
}
.iconbtn:active { background: var(--c-surface-2); }
.iconbtn .dot {
  position: absolute;
  top: 6px; inset-inline-end: 6px;
  width: 10px; height: 10px;
  border-radius: 50%;
  background: var(--c-pop);
  border: 2px solid var(--c-surface);
}

.brand {
  display: flex;
  align-items: center;
  gap: var(--sp-2);
  font-family: var(--font-display);
  font-weight: 600;
  font-size: var(--fs-xl);
  color: var(--c-ink);
  margin-inline-end: auto;
}
.brand svg { display: block; }

.topbar-right { display: flex; align-items: center; gap: var(--sp-2); }

/* ---------- side drawer ---------- */
.drawer-scrim { position: fixed; inset: 0; background: var(--c-overlay); z-index: 80; }
.drawer {
  position: fixed;
  top: 0; bottom: 0; inset-inline-start: 0;
  z-index: 81;
  width: min(80vw, 320px);
  background: var(--c-surface);
  border-inline-end: var(--bw-chunky) solid var(--c-shadow);
  padding: calc(var(--safe-top) + var(--sp-4)) var(--sp-3) var(--sp-4);
  display: flex;
  flex-direction: column;
  gap: 2px;
  transform: translateX(-105%);
  transition: transform var(--t-pop) var(--ease-bounce);
  box-shadow: var(--shadow-float);
  overflow-y: auto;
}
html[dir='rtl'] .drawer { transform: translateX(105%); }
.drawer.open { transform: translateX(0); }
.drawer-head {
  display: flex; align-items: center; gap: var(--sp-3);
  font-family: var(--font-display); font-weight: 600; font-size: var(--fs-xl);
  padding: var(--sp-2) var(--sp-2) var(--sp-4);
}
.drawer-item {
  display: flex; align-items: center; gap: var(--sp-3);
  min-height: var(--tap-min);
  padding: 0 var(--sp-3);
  border: 0; background: transparent;
  border-radius: var(--r-md);
  color: var(--c-ink);
  font-family: var(--font-display);
  font-size: var(--fs-lg);
  cursor: pointer;
  text-align: start;
  width: 100%;
}
.drawer-item i { width: 26px; text-align: center; color: var(--c-accent-deep); font-size: 18px; }
.drawer-item:active { background: var(--c-surface-2); }
.drawer-sep { height: var(--bw-thin); background: var(--c-line); margin: var(--sp-2); }

#app {
  flex: 1 1 auto;
  overflow-y: auto;
  overflow-x: hidden;
  -webkit-overflow-scrolling: touch;
  overscroll-behavior: contain;
}

.screen {
  max-width: var(--content-max);
  margin: 0 auto;
  padding: var(--sp-4) var(--sp-4) var(--sp-8);
  animation: rise-in var(--t-pop) var(--ease-bounce);
}

.tabbar {
  flex: 0 0 auto;
  height: calc(var(--tabbar-h) + var(--safe-bottom));
  padding-bottom: var(--safe-bottom);
  display: flex;
  background: var(--c-surface);
  border-top: var(--bw-sticker) solid var(--c-shadow);
}
.tab {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 3px;
  min-height: var(--tap-min);
  color: var(--c-ink-faint);
  font-size: var(--fs-xs);
  font-family: var(--font-display);
}
.tab i { font-size: 20px; }
.tab.active { color: var(--c-accent-deep); }
.tab.active i { transform: translateY(-2px) scale(1.12); transition: transform var(--t-pop) var(--ease-bounce); }

body.chat-open .tabbar { display: none; }
body.chat-open #app { overflow: hidden; }
body.login-open .tabbar, body.login-open .topbar { display: none; }
body.game-open .tabbar, body.game-open .topbar { display: none; }
body.game-open #app { overflow: hidden; }

.boot {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--sp-4);
  height: 100%;
  color: var(--c-ink-soft);
  font-family: var(--font-display);
}
.boot svg { animation: pulse-soft 1.6s infinite; }

@media (min-width: 700px) {
  .tabbar { border-top-width: var(--bw-thin); }
}

/* big screens: keep the app a focused column instead of spreading across ultrawides */
@media (min-width: 1440px) {
  body {
    background-color: var(--c-surface-2);
    background-image: var(--pattern-dots);
    align-items: center;
  }
  .topbar, .tabbar, #app {
    width: 100%;
    max-width: 1400px;
    border-left: var(--bw-sticker) solid var(--c-shadow);
    border-right: var(--bw-sticker) solid var(--c-shadow);
  }
  #app { background: var(--c-bg); }
  .screen, .chat { max-width: 760px; }
}