@layer components {
/* Layout system - replaces Metro spanX grid */

.layout {
  display: grid;
  grid-template-columns: 1fr;
  grid-template-areas: "content";
  min-height: calc(100vh - 45px);
  background: var(--surface-color);
}

.layout--with-sidebar {
  grid-template-columns: 17.5rem 1fr;
  grid-template-areas: "sidebar content";
}

.layout__sidebar {
  grid-area: sidebar;
  padding: 0;
  background: linear-gradient(180deg, var(--sidebar-bg-start), var(--sidebar-bg-end));
}

.layout__content {
  grid-area: content;
  padding: var(--space-lg);
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
  min-width: 0;
  background-color: var(--surface-color);
}

/* Mobile: sidebar hidden by default, toggle to show */
@media (max-width: 768px) {
  .layout--with-sidebar {
    grid-template-columns: 1fr;
    grid-template-areas: "content";
  }

  .layout__sidebar {
    position: fixed;
    top: 45px; /* below header */
    left: 0;
    bottom: 0;
    width: 85vw;
    max-width: 25rem;
    transform: translateX(-100%);
    transition: transform 0.2s ease;
    z-index: 100;
    overflow-y: auto;
  }

  .layout__sidebar--open {
    transform: translateX(0);
  }

  /* Overlay when sidebar is open */
  .layout__overlay {
    display: none;
    position: fixed;
    inset: 0;
    top: 45px;
    background: rgba(0, 0, 0, 0.3);
    z-index: 99;
  }

  .layout__overlay--visible {
    display: block;
  }

  .layout__content {
    padding: var(--space-md);
  }
}

/* Sidebar toggle button - only visible on mobile */
.sidebar-toggle {
  display: none !important; /* hidden on desktop */
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  padding: 0;
  background: rgba(255, 255, 255, 0.1);
  border: none;
  border-radius: calc(var(--radius-item) + var(--space-lg));
  cursor: pointer;
  color: white;
}

.sidebar-toggle:hover {
  background: rgba(255, 255, 255, 0.2);
}

.sidebar-toggle svg {
  width: 20px;
  height: 20px;
}

@media (max-width: 768px) {
  .sidebar-toggle {
    display: flex !important;
  }
}

/* Sidebar sub-menus */
.layout__sidebar .sub-menu,
.sidebar > ul ul {
  position: static;
  z-index: auto;
  display: block;
  box-shadow: none;
}

.sidebar .sub-menu.hidden {
  display: none;
}

/* Pane — white card with shadow for content sections */
.pane {
  background: var(--surface-color-light);
  border: 1px solid var(--color-border);
  border-radius: 4px;
  box-shadow: var(--shadow-subtle);
  padding: var(--space-lg);
}

.pane--compact {
  padding: var(--space-md);
}

body[data-controller~="sidebar"] {
  display: grid;
  grid-template-columns: auto 1fr;
  grid-template-rows: auto 1fr auto;
  grid-template-areas:
    "sidebar header"
    "sidebar main"
    "sidebar footer";
  min-height: 100vh;
  background-color: var(--surface-color);
  font-family: var(--font-family-sans-serif);
}

body[data-controller~="sidebar"].sidebar-hidden {
  grid-template-columns: 1fr;
  grid-template-areas:
    "header"
    "main"
    "footer";
}

body[data-controller~="sidebar"] > header {
  grid-area: header;
  position: sticky;
  top: 0;
  z-index: 110;
  min-width: 0;
  padding: 1rem 2rem 0;
  display: flex;
  align-items: center;
  background: var(--surface-color);
}

body[data-controller~="sidebar"] > aside {
  grid-area: sidebar;
  position: relative;
  z-index: 120;
  margin-right: auto;
}

body[data-controller~="sidebar"].sidebar-hidden > aside {
  display: none;
}

body[data-controller~="sidebar"] > main {
  grid-area: main;
  min-width: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  align-content: start;
  gap: 1rem;
  padding: 1rem 2rem;
}

body[data-controller~="sidebar"] > footer {
  grid-area: footer;
  padding: 1rem 2rem;
}

body[data-controller~="sidebar"] .layout {
  display: contents;
}

@media (max-width: 768px) {
  body[data-controller~="sidebar"] {
    grid-template-columns: 1fr;
    grid-template-areas:
      "header"
      "main"
      "footer";
  }

  body[data-controller~="sidebar"] > header,
  body[data-controller~="sidebar"] > main,
  body[data-controller~="sidebar"] > footer {
    padding-inline: 0.625rem;
  }

  body[data-controller~="sidebar"] > aside {
    position: fixed;
    left: 0.625rem;
    top: 3.5rem;
    bottom: 0.625rem;
    z-index: 100;
  }
}
}