#header {
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 70px;
  padding: 0 15px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  z-index: 50;
  background: linear-gradient(to bottom, rgba(15, 23, 42, 0.95), transparent);
  pointer-events: none;
  transition: opacity 0.3s;
  /* Respeita o "notch" do iPhone */
  padding-top: env(safe-area-inset-top);
}
#header > * { pointer-events: auto; }

.logo-bg {
  background: var(--surface);
  padding: 0 15px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  gap: 8px;
  height: 48px;
  box-shadow: 0 4px 20px rgba(0,0,0,0.4);
  border: 1px solid var(--surface-border);
  backdrop-filter: blur(10px);
}

.logo-text {
  color: var(--text-main);
  font-family: 'Oswald', sans-serif;
  font-weight: 700;
  font-size: 1.1rem;
  text-transform: uppercase;
  letter-spacing: -0.5px;
}

.logo-badge {
  background: var(--accent);
  color: #0f172a;
  padding: 2px 8px;
  border-radius: 6px;
  font-weight: 900;
  font-family: 'Roboto', sans-serif;
  font-size: 0.9rem;
  box-shadow: 0 2px 8px rgba(16, 185, 129, 0.3);
}

#mode-toggle {
  position: absolute;
  top: 80px; right: 20px;
  width: 48px; height: 48px;
  background: var(--surface);
  border-radius: 50%;
  box-shadow: 0 4px 16px rgba(0,0,0,0.4);
  border: 1px solid var(--surface-border);
  z-index: 40;
  display: flex;
  justify-content: center;
  align-items: center;
  transition: 0.2s;
  cursor: pointer;
  color: var(--primary);
  margin-top: env(safe-area-inset-top);
}
#mode-toggle.active-hand {
  background: var(--primary);
  color: white;
  transform: rotate(-15deg);
}

@media (max-width: 768px) {
  #mode-toggle { display: none; }
}

/* Responsividade Otimizada do Header Superior em Celulares */
@media (max-width: 600px) {
  #header {
    height: 60px;
    padding: 0 10px;
  }
  
  .logo-bg {
    height: 40px;
    padding: 0 10px;
    gap: 6px;
    border-radius: 10px;
  }

  .logo-text {
    font-size: 0.95rem;
  }

  .logo-badge {
    font-size: 0.8rem;
    padding: 2px 6px;
  }

  .btn-save {
    height: 38px;
    padding: 6px 14px;
    font-size: 0.8rem;
    gap: 4px;
  }

  .export-menu {
    width: 200px;
    top: 44px;
  }
}

@media (max-width: 380px) {
  .logo-text {
    display: none; /* Em celulares muito estreitos (<380px), oculta 'Recorte em' mantendo apenas a badge A3/A4 */
  }
}

#canvas-wrapper {
  width: 100%;
  height: 100%;
  background: var(--bg-dark);
}

/* Bloqueia rolagem no Canvas para desenhar sem a tela mexer */
canvas {
  touch-action: none !important;
}

#toolbar {
  position: absolute;
  /* CORREÇÃO DO MENU: Garante espaço da barra inferior do iPhone */
  bottom: calc(20px + env(safe-area-inset-bottom));
  left: 20px; right: 20px;
  height: 70px;
  background: rgba(30, 41, 59, 0.95);
  backdrop-filter: blur(16px);
  border: 1px solid var(--surface-border);
  border-radius: 24px;
  display: flex;
  justify-content: space-evenly;
  align-items: center;
  z-index: 50;
  box-shadow: 0 10px 40px rgba(0,0,0,0.6);
  transition: transform 0.3s, opacity 0.3s;
}

@media (min-width: 768px) {
  #toolbar { left: 50%; right: auto; width: 500px; transform: translateX(-50%); }
  #toolbar.hidden { transform: translate(-50%, 150%); }
}
@media (max-width: 767px) {
  #toolbar.hidden { transform: translateY(150%); }
}

.tool-group {
  display: flex;
  width: 100%;
  justify-content: space-evenly;
}
.hidden-group { display: none; }

.tool-btn {
  background: none;
  border: none;
  color: #ffffff;
  display: flex;
  flex-direction: column;
  align-items: center;
  font-size: 0.75rem;
  font-weight: 700;
  gap: 4px;
  padding: 10px;
  cursor: pointer;
}
.tool-btn i { font-size: 28px; color: #818cf8; }
.tool-btn span { color: #ffffff; font-weight: 700; }