/* ============================================================
   Deadline Hub — Custom CSS
   Design tokens, card hierarchy, toolbar styles, and states
   ============================================================ */

/* ----------------------------------------------------------
   Design Tokens
   ---------------------------------------------------------- */
:root {
    --color-primary:       #212529;
    --color-accent:        #0d6efd;
    --color-surface:       #ffffff;
    --color-surface-alt:   #f8f9fa;
    --color-border:        #dee2e6;
    --color-text-primary:  #212529;
    --color-text-muted:    #6c757d;

    --font-size-xs:   0.7rem;
    --font-size-sm:   0.8125rem;
    --font-size-base: 1rem;
    --font-size-md:   1.125rem;
    --font-size-lg:   1.25rem;

    --font-weight-normal: 400;
    --font-weight-medium: 500;
    --font-weight-bold:   700;

    --space-xs:  0.25rem;
    --space-sm:  0.5rem;
    --space-md:  1rem;
    --space-lg:  1.5rem;
    --space-xl:  2.5rem;

    --radius-sm: 0.25rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;

    --shadow-card:       0 1px 3px rgba(0, 0, 0, 0.07), 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-card-hover: 0 6px 16px rgba(0, 0, 0, 0.12), 0 2px 6px rgba(0, 0, 0, 0.08);
}

/* ----------------------------------------------------------
   Base
   ---------------------------------------------------------- */
body {
    font-family: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    color: var(--color-text-primary);
    background-color: var(--color-surface-alt);
}

/* ----------------------------------------------------------
   Card Visual Hierarchy
   ---------------------------------------------------------- */
.card {
    position: relative;
    top: 0;
    box-shadow: var(--shadow-card);
    border-color: var(--color-border);
    transition: box-shadow 0.18s ease, top 0.18s ease;
}

.card:hover {
    box-shadow: var(--shadow-card-hover);
    top: -2px;
}

.card-title {
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-bold);
    margin-bottom: var(--space-sm);
}

.card-text {
    font-size: var(--font-size-sm);
    color: var(--color-text-primary);
    line-height: 1.6;
}

.card-meta {
    font-size: var(--font-size-xs);
    color: var(--color-text-muted);
}

.btn-xs {
    padding: 0.1rem 0.3rem;
    font-size: var(--font-size-xs);
    line-height: 1.4;
    border-radius: var(--radius-sm);
}

/* ----------------------------------------------------------
   Filter Toolbar
   ---------------------------------------------------------- */
#filterToolbar {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
    padding: var(--space-sm) 0;
}

.filter-row {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: var(--space-sm);
}

/* Search bar grows to fill available space in row 1 */
.filter-search {
    flex: 1 1 200px;
}

/* View toggle + show past: inline on desktop, own line on mobile */
.filter-controls-group {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

@media (max-width: 767px) {
    .filter-controls-group {
        flex-basis: 100%;
    }
}

/* Dropdown menus for filters: scrollable, fixed max-height */
.filter-dropdown-menu {
    max-height: 280px;
    overflow-y: auto;
    min-width: 220px;
    padding: var(--space-xs) 0;
}

/* Filter dropdown toggle: position badge relative to button */
.filter-dropdown-toggle {
    position: relative;
}

/* Active filter count badge */
.filter-active-badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 18px;
    height: 18px;
    padding: 0 5px;
    margin-left: var(--space-xs);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-bold);
    background-color: var(--color-accent);
    color: #fff;
    border-radius: 999px;
    line-height: 1;
}

/* Checkbox items inside dropdown menus */
.filter-dropdown-menu .dropdown-item {
    cursor: pointer;
    font-size: var(--font-size-sm);
    padding: 0.35rem var(--space-md);
}

.filter-dropdown-menu .dropdown-item:hover {
    background-color: var(--color-surface-alt);
}

/* Count pill next to each filter option */
.filter-count {
    font-size: var(--font-size-xs);
    color: var(--color-text-muted);
    margin-left: auto;
    padding-left: var(--space-sm);
}

/* ----------------------------------------------------------
   List View
   ---------------------------------------------------------- */
#listContainer .table {
    font-size: 0.9rem;
}

/* ----------------------------------------------------------
   About Modal
   ---------------------------------------------------------- */
#learnModal .list-group-item {
    font-size: var(--font-size-sm);
}

/* ----------------------------------------------------------
   Loading / Error States
   ---------------------------------------------------------- */
#loadingIndicator {
    display: none;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: var(--space-xl) 0;
    gap: var(--space-md);
}

#errorMessage {
    display: none;
}

#appContent {
    display: none;
}

#listContainer {
    display: none;
}