/* ==========================================================================
   LAYOUT - SPA Shell Grid
   Caderno Inteligente: sidebar (280px) | content (flex)
   Zero hardcoded values - all from tokens.css
   ========================================================================== */

/* --- App Shell --- */
.app {
  display: grid;
  grid-template-columns: 280px 1fr;
  min-height: 100vh;
  background: var(--color-bg-primary);
  color: var(--color-text-primary);
  font-family: var(--font-family);
}

/* --- Sidebar Panel --- */
.app__sidebar {
  position: sticky;
  top: 0;
  height: 100vh;
  overflow-y: auto;
  background: var(--color-bg-secondary);
  border-right: 1px solid var(--color-border);
  display: flex;
  flex-direction: column;
  z-index: 100;
}

/* --- Content Panel --- */
.app__content {
  overflow-y: auto;
  height: 100vh;
  scroll-behavior: smooth;
}

/* Content inner inherits .content from components.css */
.app__content .content {
  max-width: 1200px;
  margin: 0 auto;
  padding: 2rem 2.5rem 4rem;
}

/* --- Mobile Hamburger --- */
.app__hamburger {
  display: none;
  position: fixed;
  top: 1rem;
  left: 1rem;
  z-index: 200;
  width: 44px;
  height: 44px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-bg-secondary);
  color: var(--color-text-primary);
  cursor: pointer;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  transition: background 0.15s ease;
}

.app__hamburger:hover {
  background: var(--color-bg-card);
}

/* --- Mobile Overlay --- */
.app__overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: var(--color-black-60);
  z-index: 90;
  opacity: 0;
  transition: opacity 0.2s ease;
}

.app__overlay--visible {
  opacity: 1;
}

/* --- Responsive: Mobile --- */
@media (max-width: 768px) {
  .app {
    grid-template-columns: 1fr;
  }

  .app__hamburger {
    display: flex;
  }

  .app__sidebar {
    position: fixed;
    top: 0;
    left: -300px;
    width: 280px;
    height: 100vh;
    transition: left 0.25s ease;
    box-shadow: var(--shadow-lg);
  }

  .app__sidebar--open {
    left: 0;
  }

  .app__overlay--visible {
    display: block;
    opacity: 1;
  }

  .app__content {
    height: auto;
    min-height: 100vh;
  }

  .app__content .content {
    padding: 1.25rem 1rem 3rem;
    padding-top: 4rem; /* space for hamburger */
  }
}