/**
 * Dashboard Layout
 * TODO: Implement a dashboard with header, sidebar, main content area, and footer
 * 
 * Requirements:
 * - Header should be fixed height with items positioned using Flexbox
 * - Sidebar should be fixed width (use var(--sidebar-width))
 * - Main content should fill remaining space
 * - Footer should stick to the bottom of the viewport
 * - Cards in main content should use nested Flexbox with sticky footers
 */

/* Dashboard container: full-height column flex layout for sticky footer */
.dashboard {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* Header: flex row, center items, push user menu right with margin-left:auto */
.dashboard-header {
  display: flex;
  align-items: center;
  gap: var(--spacing-lg);

  height: var(--header-height);
  background-color: var(--color-primary);
  color: white;
  padding: 0 var(--spacing-lg);
}

.dashboard-logo {
  font-size: var(--font-size-large);
  font-weight: var(--font-weight-bold);
}

.dashboard-user-menu {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: var(--spacing-med);
}

/* Body: grows to fill available height; row layout for sidebar + main */
.dashboard-body {
  display: flex;
  flex-direction: row;
  flex-grow: 1;     /* fill remaining vertical space */
  flex-shrink: 1;
  flex-basis: auto;
  min-height: 0;    /* prevents overflow issues in some browsers */
}

/* Sidebar: fixed width and no shrinking */
.dashboard-sidebar {
  flex-grow: 0;
  flex-shrink: 0;
  flex-basis: var(--sidebar-width);

  background-color: var(--color-surface);
  border-right: 1px solid var(--color-border);
  padding: var(--spacing-lg);
}

/* Nav stack */
.sidebar-nav {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.sidebar-nav-item {
  padding: var(--spacing-sm) var(--spacing-med);
  border-radius: var(--radius-sm);
  display: block;
}

.sidebar-nav-item:hover {
  background-color: var(--color-border);
}

/* Main: fills remaining width */
.dashboard-main {
  flex-grow: 1;
  flex-shrink: 1;
  flex-basis: 0;

  padding: var(--spacing-xl);
  min-width: 0;
}

/* Cards container: responsive flex wrap grid */
.dashboard-cards {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-lg);
  align-content: flex-start; /* align-content requirement (wrap + multiple rows) */
}

/* Card: flex item sizing + nested flex column for sticky footer */
.dashboard-card {
  flex-grow: 1;
  flex-shrink: 1;
  flex-basis: 280px;

  display: flex;
  flex-direction: column;

  background-color: white;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-med);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
}

.dashboard-card-header {
  padding: var(--spacing-med);
  border-bottom: 1px solid var(--color-border);
  font-weight: var(--font-weight-bold);
}

.dashboard-card-body {
  flex-grow: 1;
  flex-shrink: 1;
  flex-basis: auto;

  padding: var(--spacing-med);
  min-height: 0;
}

.dashboard-card-footer {
  margin-top: auto; /* sticky footer inside the card */
  padding: var(--spacing-med);
  border-top: 1px solid var(--color-border);
  background-color: var(--color-surface);
}

/* Footer: fixed height, pinned to bottom by dashboard flex layout */
.dashboard-footer {
  height: 60px;
  background-color: var(--color-surface);
  border-top: 1px solid var(--color-border);
  padding: 0 var(--spacing-lg);

  display: flex;
  align-items: center;
}