.app-root { opacity: 1; transition: opacity 0.3s ease; }
.app-root.hidden { opacity: 0; pointer-events: none; }

.app-header {
  height: var(--header-height);
  padding: 0 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: sticky;
  top: 0;
  z-index: 50;
  flex-shrink: 0;
}

.header-left { display: flex; align-items: center; gap: 12px; }
.header-right { display: flex; align-items: center; gap: 8px; }

.logo {
  font-size: 18px;
  font-weight: 700;
  background: linear-gradient(135deg, var(--accent-purple), var(--accent-blue));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: -0.5px;
}

.main-container {
  flex: 1;
  overflow-y: auto;
  overflow-x: hidden;
  -webkit-overflow-scrolling: touch;
  position: relative;
  padding-bottom: calc(var(--bottom-nav-height) + var(--safe-bottom) + 16px);
}

.view {
  display: none;
  animation: fadeIn 0.25s ease;
  padding: 0 16px 16px;
  min-height: 100%;
}
.view.active { display: block; }

.view-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 0;
  position: sticky;
  top: 0;
  background: var(--bg-primary);
  z-index: 10;
}
.view-header h2 {
  font-size: 24px;
  font-weight: 700;
  letter-spacing: -0.5px;
}

.bottom-nav {
  height: var(--bottom-nav-height);
  padding-bottom: var(--safe-bottom);
  display: flex;
  align-items: center;
  justify-content: space-around;
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: 50;
  border-top: 1px solid var(--glass-border);
}

.nav-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 4px;
  padding: 8px 12px;
  color: var(--text-tertiary);
  transition: color var(--transition-fast), transform var(--transition-fast);
  background: none;
  border: none;
  flex: 1;
}
.nav-item svg { width: 22px; height: 22px; transition: transform var(--transition-spring); }
.nav-item span { font-size: 10px; font-weight: 500; }
.nav-item.active { color: var(--accent-purple); }
.nav-item.active svg { transform: translateY(-2px); }
.nav-item:active { transform: scale(0.92); }

.fab-container {
  position: fixed;
  bottom: calc(var(--bottom-nav-height) + var(--safe-bottom) + 16px);
  right: 16px;
  z-index: 40;
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 12px;
}

.fab-menu {
  display: flex;
  flex-direction: column;
  gap: 10px;
  opacity: 0;
  transform: translateY(12px) scale(0.9);
  pointer-events: none;
  transition: all var(--transition-spring);
}
.fab-container.active .fab-menu {
  opacity: 1;
  transform: translateY(0) scale(1);
  pointer-events: all;
}

.fab-item {
  display: flex;
  align-items: center;
  gap: 10px;
  background: var(--bg-elevated);
  border: 1px solid var(--border-color);
  padding: 10px 16px;
  border-radius: 100px;
  box-shadow: var(--shadow-md);
  font-size: 13px;
  font-weight: 500;
  color: var(--text-primary);
  cursor: pointer;
  transition: transform var(--transition-fast), background var(--transition-fast);
  white-space: nowrap;
}
.fab-item:active { transform: scale(0.95); }

.fab-item-icon {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent-purple), var(--accent-blue));
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  flex-shrink: 0;
}

.fab-main {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent-purple), var(--accent-blue));
  color: white;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-glow), var(--shadow-md);
  border: none;
  transition: transform var(--transition-spring), box-shadow var(--transition-base);
}
.fab-main svg { width: 24px; height: 24px; transition: transform var(--transition-spring); }
.fab-container.active .fab-main svg { transform: rotate(45deg); }
.fab-main:active { transform: scale(0.92); }

@media (min-width: 768px) {
  .main-container { max-width: 480px; margin: 0 auto; width: 100%; }
  .bottom-nav { max-width: 480px; left: 50%; transform: translateX(-50%); border-radius: 24px 24px 0 0; }
  .fab-container { right: calc(50% - 224px); }
}