/* ── Reset ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html, body { height: 100%; overflow: hidden; }

body {
  display: flex;
  font-family: var(--fonte-corpo);
  background: var(--body-bg);
  transition: background var(--trans);
}

/* ── Main area ── */
.main-area {
  flex: 1;
  overflow: hidden;
  position: relative;
  background: var(--main-bg);
  transition: background var(--trans);
}

.app-frame {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border: none;
  display: none;
}

.app-frame.active { display: block; }

/* Loading overlay */
.frame-loader {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 10;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s;
}

html[data-theme="dark"]  .frame-loader { background: #07091a; }
html[data-theme="light"] .frame-loader { background: #f0f2f8; }

.frame-loader.visible { opacity: 1; pointer-events: auto; }

.loader-spinner {
  width: 36px;
  height: 36px;
  border: 3px solid var(--azul-claro);
  border-top-color: var(--laranja);
  border-radius: 50%;
  animation: spin 0.75s linear infinite;
}

@keyframes spin { to { transform: rotate(360deg); } }

/* Scrollbar */
::-webkit-scrollbar { width: 5px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--azul-claro); border-radius: 3px; }

/* ── Hamburger menu (≤ 899px) ── */
.hamburger {
  display: none;
  position: fixed;
  top: 12px;
  left: 12px;
  z-index: 300;
  width: 38px;
  height: 38px;
  border-radius: 8px;
  cursor: pointer;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  padding: 0;
  border: 1px solid var(--borda);
  transition: background var(--trans), border-color var(--trans);
}

html[data-theme="dark"]  .hamburger { background: var(--azul); }
html[data-theme="light"] .hamburger { background: #ffffff; border-color: #cbd0e0; }
html[data-theme="dark"]  .hamburger:hover { background: var(--azul-medio); }
html[data-theme="light"] .hamburger:hover { background: #f0f2f8; }

.hamburger .bar {
  display: block;
  width: 18px;
  height: 2px;
  border-radius: 1px;
  transition: all 0.25s ease;
}

html[data-theme="dark"]  .hamburger .bar { background: #ffffff; }
html[data-theme="light"] .hamburger .bar { background: #1e2544; }

.hamburger.open .bar:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.open .bar:nth-child(2) { opacity: 0; transform: scaleX(0); }
.hamburger.open .bar:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

.sidebar-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,.5);
  z-index: 140;
  backdrop-filter: blur(2px);
}

.sidebar-overlay.visible { display: block; }

@media (max-width: 899px) {
  .hamburger { display: none; }
  .sidebar { display: none; }
  .sidebar-overlay { display: none; }
  .main-area { position: fixed; inset: 0; }
}