/*
 * Kwalee BI — Dashboard page layout & tile grid
 *
 * Responsive CSS Grid: 3-col (desktop) → 2-col (tablet) → 1-col (mobile).
 * Tiles placed via grid-column spans for wide/full-width variants.
 *
 * Story 2.2: Dashboard Page Layout & Auto-Discovery
 */

/* ─── Dashboard page container ─── */
.dashboard-page {
  padding: var(--spacing-sm) var(--spacing-lg) var(--spacing-lg);

  margin: 0 auto;
  width: 100%;
}

/* ─── Sticky banner: header + filter bar pinned on scroll ─── */
.dashboard-sticky-banner {
  position: sticky;
  top: var(--nav-height);
  z-index: 55;
  background: var(--bg-primary);
  margin: 0 calc(-1 * var(--spacing-lg));
  padding: 10px var(--spacing-lg) 0;
  border-bottom: 1px solid var(--border-color);
}

/* Scroll shadow — fades out naturally as content scrolls under the banner */
.dashboard-sticky-banner::after {
  content: "";
  position: absolute;
  inset-inline: 0;
  bottom: -8px;
  height: 8px;
  pointer-events: none;
  background: linear-gradient(
    to bottom,
    color-mix(in srgb, var(--bg-primary) 50%, transparent),
    transparent
  );
  transition: opacity 0.3s ease;
}
/* light theme: softer shadow */
[data-theme="light"] .dashboard-sticky-banner::after {
  background: linear-gradient(
    to bottom,
    color-mix(in srgb, var(--text-muted) 12%, transparent),
    transparent
  );
}
/* hide shadow when scrolled to top */

.shell-sub-tabs:empty ~ .shell-content .dashboard-sticky-banner {
  top: var(--nav-height);
}

/* ─── Page header ─── */
.dashboard-header {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-sm);
}

.dashboard-header-toolbar {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  margin-left: auto;
}

.dashboard-header-toolbar .freshness-indicator {
  margin-inline-start: 0;
}

/* ─── Save View button (header toolbar) ─── */
.dashboard-header .save-view-btn {
  padding: 4px 12px;
  font-size: 0.8125rem;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm, 4px);
  background: var(--bg-surface);
  color: var(--text-muted);
  cursor: pointer;
  transition:
    background 0.15s,
    border-color 0.15s;
  white-space: nowrap;
}

.dashboard-header .save-view-btn:hover {
  background: color-mix(in srgb, var(--accent) 10%, transparent);
  border-color: var(--accent);
  color: var(--accent);
}

.dashboard-title {
  font-family: var(--font-heading);
  font-size: clamp(0.875rem, 2.5vw + 0.25rem, 1.5rem);
  font-weight: 600;
  margin-bottom: var(--spacing-xs);
}

[data-theme="dark"] .dashboard-title {
  color: var(--color-neutral-50);
}

[data-theme="light"] .dashboard-title {
  color: var(--color-neutral-900);
}

.dashboard-subtitle {
  font-size: clamp(0.75rem, 1.5vw + 0.25rem, 0.875rem);
  color: var(--color-neutral-400);
}

/* ─── Tile grid (responsive 6 → 3 → 2 → 1 columns) ─── */
.dashboard-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: var(--spacing-md);
  width: 100%;
  padding-block-start: var(--spacing-lg);
}

/* Tile span modifiers */
.dashboard-tile--span-2 {
  grid-column: span 2;
}

.dashboard-tile--span-3 {
  grid-column: span 3;
}

.dashboard-tile--full {
  grid-column: 1 / -1;
}

/* ─── Tablet: 3 columns ─── */
@media (max-width: 1024px) {
  .dashboard-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .dashboard-tile--span-2,
  .dashboard-tile--span-3 {
    grid-column: 1 / -1;
  }

  .dashboard-tile--full {
    grid-column: 1 / -1;
  }
}

/* ─── Mobile: 2 columns (KPIs pair up) ─── */
@media (max-width: 640px) {
  .dashboard-page {
    padding: var(--spacing-md);
  }

  .dashboard-header-toolbar {
    width: 100%;
    margin-left: 0;
  }

  .dashboard-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-md);
  }

  .dashboard-tile--span-2,
  .dashboard-tile--span-3,
  .dashboard-tile--half,
  .dashboard-tile--full {
    grid-column: 1 / -1;
  }

  .dashboard-tile {
    padding: 6px var(--spacing-sm);
    border-radius: var(--radius-sm);
  }
}

/* ─── Base tile styling ─── */
.dashboard-tile {
  border-radius: var(--radius-lg);
  padding: var(--spacing-sm);
  /* min-height: 120px; */
  transition:
    box-shadow 0.2s ease,
    transform 0.15s ease;
}

[data-theme="dark"] .dashboard-tile {
  background: var(--color-neutral-900);
  border: 1px solid var(--color-neutral-800);
}

[data-theme="light"] .dashboard-tile {
  background: var(--bg-elevated);
  border: 1px solid var(--color-neutral-200);
  box-shadow: var(--shadow-sm);
}

/* ─── Placeholder tile (used before real tile components exist) ─── */
.dashboard-tile--placeholder {
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.875rem;
  color: var(--color-neutral-400);
  font-style: italic;
}

/* ─── Filter bar slot (above the grid) ─── */
.dashboard-filter-bar {
  margin-bottom: var(--spacing-sm);
}

.dashboard-pregrid {
  margin-top: var(--spacing-lg);
}