/* Layout System for phpMyGTD */

/* ===== Container ===== */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-md);
}

/* ===== App Shell ===== */
.app {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

.app-header {
  position: sticky;
  top: 0;
  z-index: var(--z-sticky);
  background-color: var(--color-bg-primary);
  border-bottom: 1px solid var(--color-border);
  padding: var(--space-sm) var(--space-md);
}

.app-main {
  flex: 1;
  padding: var(--space-md);
  padding-bottom: calc(var(--space-md) + 60px); /* Space for bottom nav on mobile */
}

/* Desktop: Remove bottom padding */
@media (min-width: 769px) {
  .app-main {
    padding-bottom: var(--space-md);
  }
}

/* ===== Page Layout with Sidebar ===== */
.page-layout {
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
}

.page-content {
  flex: 1;
  min-width: 0; /* Prevent flex overflow */
}

.page-sidebar {
  width: 100%;
}

/* Tablet and up: Side-by-side layout */
@media (min-width: 769px) {
  .page-layout {
    flex-direction: row;
  }

  .page-sidebar {
    width: 250px;
    flex-shrink: 0;
  }
}

/* ===== Flexbox Utilities ===== */
.flex {
  display: flex;
}

.flex-col {
  flex-direction: column;
}

.flex-wrap {
  flex-wrap: wrap;
}

.items-center {
  align-items: center;
}

.items-start {
  align-items: flex-start;
}

.items-end {
  align-items: flex-end;
}

.justify-center {
  justify-content: center;
}

.justify-between {
  justify-content: space-between;
}

.justify-end {
  justify-content: flex-end;
}

.gap-xs { gap: var(--space-xs); }
.gap-sm { gap: var(--space-sm); }
.gap-md { gap: var(--space-md); }
.gap-lg { gap: var(--space-lg); }
.gap-xl { gap: var(--space-xl); }

.flex-1 { flex: 1; }
.flex-auto { flex: auto; }
.flex-none { flex: none; }

/* ===== Grid Utilities ===== */
.grid {
  display: grid;
}

.grid-cols-1 { grid-template-columns: repeat(1, 1fr); }
.grid-cols-2 { grid-template-columns: repeat(2, 1fr); }
.grid-cols-3 { grid-template-columns: repeat(3, 1fr); }

@media (min-width: 481px) {
  .sm\:grid-cols-2 { grid-template-columns: repeat(2, 1fr); }
}

@media (min-width: 769px) {
  .md\:grid-cols-2 { grid-template-columns: repeat(2, 1fr); }
  .md\:grid-cols-3 { grid-template-columns: repeat(3, 1fr); }
}

/* ===== Header Layout ===== */
.header-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-sm);
}

.header-brand {
  font-size: var(--font-size-xl);
  font-weight: bold;
  color: var(--color-text-primary);
  text-decoration: none;
}

.header-brand:hover {
  text-decoration: none;
}

.header-nav {
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

/* Hide desktop nav on mobile */
@media (max-width: 768px) {
  .header-nav--desktop {
    display: none;
  }
}

/* ===== Bottom Navigation (Mobile) ===== */
.bottom-nav {
  display: none;
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  z-index: var(--z-fixed);
  background-color: var(--color-bg-primary);
  border-top: 1px solid var(--color-border);
  padding: var(--space-xs) 0;
  padding-bottom: env(safe-area-inset-bottom, var(--space-xs));
}

@media (max-width: 768px) {
  .bottom-nav {
    display: flex;
  }
}

.bottom-nav-items {
  display: flex;
  justify-content: space-around;
  align-items: center;
  width: 100%;
}

.bottom-nav-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--space-xs) var(--space-sm);
  min-height: var(--touch-target-min);
  min-width: var(--touch-target-min);
  color: var(--color-text-secondary);
  text-decoration: none;
  font-size: var(--font-size-xs);
  transition: color var(--transition-fast);
}

.bottom-nav-item:hover,
.bottom-nav-item:focus {
  color: var(--color-text-primary);
  text-decoration: none;
}

.bottom-nav-item.active {
  color: var(--color-button-primary);
}

.bottom-nav-icon {
  font-size: 1.25rem;
  margin-bottom: 2px;
}

/* ===== Filter Panel (Mobile Slide-out) ===== */
@media (max-width: 768px) {
  .filter-panel,
  #contexts.filter-panel {
    position: fixed !important;
    top: 0 !important;
    right: -100% !important;
    width: 80% !important;
    max-width: 300px !important;
    height: 100% !important;
    z-index: var(--z-modal) !important;
    background-color: var(--color-bg-primary);
    box-shadow: var(--shadow-lg);
    transition: right var(--transition-normal);
    overflow-y: auto;
  }

  .filter-panel.open,
  #contexts.filter-panel.open {
    right: 0 !important;
  }
}

.filter-panel-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-bottom: var(--space-sm);
  margin-bottom: var(--space-sm);
  border-bottom: 1px solid var(--color-border);
}

.filter-panel-title {
  font-weight: 600;
  font-size: var(--font-size-lg);
}

.filter-panel-close {
  background: none;
  border: none;
  font-size: 1.5rem;
  color: var(--color-text-muted);
  cursor: pointer;
  padding: var(--space-xs);
  line-height: 1;
}

.filter-panel-close:hover {
  color: var(--color-text-primary);
}

/* Desktop: show header but hide close button */
@media (min-width: 769px) {
  .filter-panel-header {
    display: flex;
    padding: 0 0 var(--space-sm) 0;
    border-bottom: none;
  }

  .filter-panel-close {
    display: none;
  }
}

.filter-backdrop {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: var(--z-modal-backdrop);
  background-color: rgba(0, 0, 0, 0.5);
}

.filter-backdrop.open {
  display: block;
}

/* Desktop: Filter as sticky sidebar */
@media (min-width: 769px) {
  .filter-panel {
    width: 100%;
    max-width: none;
    height: auto;
    overflow: visible;
    box-shadow: none;
    padding: var(--space-sm);
    background: var(--color-bg-secondary);
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border);
  }

  .filter-backdrop {
    display: none !important;
  }
}

/* ===== Content Sections ===== */
.section {
  margin-bottom: var(--space-lg);
}

.section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-md);
  padding-bottom: var(--space-sm);
  border-bottom: 1px solid var(--color-border);
}

.section-title {
  font-size: var(--font-size-lg);
  font-weight: 600;
  color: var(--color-text-primary);
}

/* ===== Edit Page Grid Layout ===== */
.edit-grid {
  display: grid;
  gap: var(--space-lg);
  grid-template-columns: 1fr;
}

@media (min-width: 481px) {
  .edit-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 769px) {
  .edit-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* ===== Accordion (Mobile Edit Page) ===== */
.accordion {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.accordion-item {
  border-bottom: 1px solid var(--color-border);
}

.accordion-item:last-child {
  border-bottom: none;
}

.accordion-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  padding: var(--space-md);
  background-color: var(--color-bg-secondary);
  cursor: pointer;
  min-height: var(--touch-target-min);
}

.accordion-header:hover {
  background-color: var(--color-bg-hover);
}

.accordion-content {
  display: none;
  padding: var(--space-md);
}

.accordion-item.open .accordion-content {
  display: block;
}

.accordion-icon {
  transition: transform var(--transition-fast);
}

.accordion-item.open .accordion-icon {
  transform: rotate(180deg);
}

/* On tablet+, show as grid instead of accordion */
@media (min-width: 481px) {
  .accordion--mobile-only {
    display: contents;
  }

  .accordion--mobile-only .accordion-item {
    border: none;
  }

  .accordion--mobile-only .accordion-header {
    display: none;
  }

  .accordion--mobile-only .accordion-content {
    display: block;
    padding: 0;
  }
}