/* ============================================================
   KONFUCJUSZ — UI COMPONENT LIBRARY
   Clean SaaS-dashboard primitives. Every rule consumes the
   semantic tokens from app.css so light/dark mode flips for free.
   All classes are `kf-`-prefixed to avoid Bootstrap collisions.
   Consumed by the Razor components in Components/UI/.
   ============================================================ */

/* ===========================================================
   PAGE HEADER  (PageHeader.razor)
   =========================================================== */
.kf-page-header {
    display: flex;
    flex-wrap: wrap;
    align-items: flex-start;
    justify-content: space-between;
    gap: var(--space-3);
    margin-bottom: var(--space-5);
    padding-bottom: var(--space-4);
    border-bottom: 1px solid var(--border);
}
.kf-page-header__main { min-width: 0; }
.kf-page-header__title {
    margin: 0;
    font-size: var(--text-2xl);
    font-weight: 700;
    line-height: var(--leading-tight);
    letter-spacing: -0.02em;
    color: var(--heading-color);
}
.kf-page-header__subtitle {
    margin: var(--space-2) 0 0;
    color: var(--text-muted);
    font-size: var(--text-sm);
    max-width: 60ch;
}
.kf-page-header__actions {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: var(--space-2);
    flex-shrink: 0;
}

/* ===========================================================
   BREADCRUMBS  (Breadcrumbs.razor)
   =========================================================== */
.kf-breadcrumb {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: var(--space-2);
    margin: 0 0 var(--space-2);
    padding: 0;
    list-style: none;
    font-size: var(--text-xs);
    color: var(--text-muted);
}
.kf-breadcrumb a { color: var(--text-muted); font-weight: 500; }
.kf-breadcrumb a:hover { color: var(--link-hover); }
.kf-breadcrumb li { display: flex; align-items: center; gap: var(--space-2); }
.kf-breadcrumb li:not(:last-child)::after {
    content: "/";
    color: var(--border-strong);
}
.kf-breadcrumb li:last-child { color: var(--text); font-weight: 600; }

/* ===========================================================
   TOOLBAR  (action / filter rows)
   =========================================================== */
.kf-toolbar {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: var(--space-2);
    margin-bottom: var(--space-4);
}
.kf-toolbar__spacer { margin-left: auto; }

/* ===========================================================
   SURFACE CARD  (generic kf-card; EventCard uses kf-event-card)
   =========================================================== */
.kf-card {
    display: flex;
    flex-direction: column;
    background-color: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    box-shadow: var(--shadow-xs);
    transition: box-shadow var(--transition), border-color var(--transition), transform var(--transition);
}
.kf-card--pad { padding: var(--space-5); }
.kf-card__header {
    padding: var(--space-4) var(--space-5);
    border-bottom: 1px solid var(--border);
    font-weight: 600;
    color: var(--heading-color);
}
.kf-card__body { padding: var(--space-5); flex: 1 1 auto; }
.kf-card__footer {
    padding: var(--space-4) var(--space-5);
    border-top: 1px solid var(--border);
}

/* ===========================================================
   STAT CARD  (StatCard.razor)
   =========================================================== */
.kf-stat {
    display: flex;
    flex-direction: column;
    gap: var(--space-1);
    padding: var(--space-4) var(--space-5);
    background-color: var(--surface);
    border: 1px solid var(--border);
    border-left: 3px solid var(--border-strong);
    border-radius: var(--radius);
    box-shadow: var(--shadow-xs);
    min-width: 0;
}
.kf-stat__label {
    font-size: var(--text-xs);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    color: var(--text-muted);
    display: flex;
    align-items: center;
    gap: var(--space-2);
}
.kf-stat__value {
    font-size: var(--text-2xl);
    font-weight: 700;
    line-height: 1;
    color: var(--heading-color);
}
.kf-stat--primary { border-left-color: var(--navy-600); }
.kf-stat--accent  { border-left-color: var(--amber-500); }
.kf-stat--success { border-left-color: var(--bs-success); }
.kf-stat--warning { border-left-color: var(--bs-warning); }
.kf-stat--info    { border-left-color: var(--bs-info); }
.kf-stat--danger  { border-left-color: var(--bs-danger); }

.kf-stat-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: var(--space-3);
    margin-bottom: var(--space-5);
}

/* ===========================================================
   EVENT CARD  (EventCard.razor)
   =========================================================== */
.kf-card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: var(--space-4);
}
.kf-event-card {
    display: flex;
    flex-direction: column;
    background-color: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    box-shadow: var(--shadow-xs);
    overflow: hidden;
    transition: box-shadow var(--transition), transform var(--transition), border-color var(--transition);
}
.kf-event-card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}
/* status accent rail on the left edge */
.kf-event-card--success { border-left: 3px solid var(--bs-success); }
.kf-event-card--warning { border-left: 3px solid var(--bs-warning); }
.kf-event-card--info    { border-left: 3px solid var(--bs-info); }
.kf-event-card--danger  { border-left: 3px solid var(--bs-danger); }
.kf-event-card--primary { border-left: 3px solid var(--navy-600); }

.kf-event-card__header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: var(--space-3);
    padding: var(--space-4) var(--space-5);
    border-bottom: 1px solid var(--border-subtle);
}
.kf-event-card__title {
    margin: 0;
    font-size: var(--text-lg);
    font-weight: 600;
    line-height: var(--leading-tight);
    color: var(--heading-color);
}
.kf-event-card__body {
    padding: var(--space-4) var(--space-5);
    flex: 1 1 auto;
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
}
.kf-event-card__desc {
    margin: 0;
    color: var(--text-muted);
    font-size: var(--text-sm);
    line-height: var(--leading-normal);
}
.kf-event-card__meta {
    display: flex;
    flex-direction: column;
    gap: var(--space-1);
    font-size: var(--text-sm);
}
.kf-event-card__meta-row {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    color: var(--text);
}
.kf-event-card__meta-label {
    color: var(--text-muted);
    min-width: 3.25rem;
    font-size: var(--text-xs);
    text-transform: uppercase;
    letter-spacing: 0.03em;
}
.kf-event-card__footer {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-4) var(--space-5);
    border-top: 1px solid var(--border-subtle);
    margin-top: auto;
}

/* ===========================================================
   STATUS / TIMING PILLS  (StatusBadge.razor, TimingBadge.razor)
   Soft-tinted pills — calmer than solid Bootstrap badges.
   =========================================================== */
.kf-pill {
    display: inline-flex;
    align-items: center;
    gap: 0.35em;
    padding: 0.3em 0.7em;
    border-radius: var(--radius-pill);
    font-size: var(--text-xs);
    font-weight: 600;
    line-height: 1;
    letter-spacing: 0.01em;
    white-space: nowrap;
    border: 1px solid transparent;
}
.kf-pill--success { background-color: rgba(25, 135, 84, 0.12);  color: #15663f; border-color: rgba(25, 135, 84, 0.25); }
.kf-pill--warning { background-color: rgba(217, 119, 6, 0.14);  color: #92520a; border-color: rgba(217, 119, 6, 0.28); }
.kf-pill--info    { background-color: rgba(11, 78, 110, 0.10);  color: #0b4e6e; border-color: rgba(11, 78, 110, 0.22); }
.kf-pill--danger  { background-color: rgba(220, 38, 38, 0.12);  color: #a11b1b; border-color: rgba(220, 38, 38, 0.25); }
.kf-pill--muted   { background-color: var(--surface-2);         color: var(--text-muted); border-color: var(--border); }
.kf-pill--live {
    background-color: rgba(25, 135, 84, 0.14);
    color: #15663f;
    border-color: rgba(25, 135, 84, 0.30);
}
.kf-pill--live .kf-pill__dot {
    width: 0.5em; height: 0.5em; border-radius: 50%;
    background-color: var(--bs-success);
    box-shadow: 0 0 0 0 rgba(25, 135, 84, 0.5);
    animation: kf-pulse 1.8s ease-out infinite;
}
@keyframes kf-pulse {
    0%   { box-shadow: 0 0 0 0 rgba(25, 135, 84, 0.45); }
    70%  { box-shadow: 0 0 0 0.4em rgba(25, 135, 84, 0); }
    100% { box-shadow: 0 0 0 0 rgba(25, 135, 84, 0); }
}

[data-theme="dark"] .kf-pill--success { color: #8FE3B6; }
[data-theme="dark"] .kf-pill--warning { color: #F3C77A; }
[data-theme="dark"] .kf-pill--info    { color: #9DDDFB; background-color: rgba(56, 189, 248, 0.12); border-color: rgba(56, 189, 248, 0.28); }
[data-theme="dark"] .kf-pill--danger  { color: #F5A8A8; }
[data-theme="dark"] .kf-pill--live    { color: #8FE3B6; }

/* ===========================================================
   EMPTY STATE  (EmptyState.razor)
   =========================================================== */
.kf-empty {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: var(--space-3);
    padding: var(--space-8) var(--space-5);
    background-color: var(--surface);
    border: 1px dashed var(--border-strong);
    border-radius: var(--radius);
}
.kf-empty__icon {
    font-size: 2.5rem;
    line-height: 1;
    opacity: 0.7;
}
.kf-empty__title {
    margin: 0;
    font-size: var(--text-lg);
    font-weight: 600;
    color: var(--heading-color);
}
.kf-empty__message {
    margin: 0;
    color: var(--text-muted);
    font-size: var(--text-sm);
    max-width: 48ch;
}
.kf-empty__actions {
    display: flex;
    gap: var(--space-2);
    margin-top: var(--space-2);
}

/* ===========================================================
   MODAL  (Modal.razor — also matches ConfirmTypedDialog styling)
   =========================================================== */
.kf-modal-overlay {
    position: fixed;
    inset: 0;
    z-index: 1050;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-4);
    background-color: rgba(10, 20, 35, 0.55);
    backdrop-filter: blur(2px);
}
.kf-modal {
    width: 100%;
    max-width: 520px;
    max-height: calc(100vh - 2rem);
    display: flex;
    flex-direction: column;
    background-color: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    overflow: hidden;
}
.kf-modal--lg { max-width: 720px; }
.kf-modal--sm { max-width: 400px; }
.kf-modal__header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-3);
    padding: var(--space-4) var(--space-5);
    border-bottom: 1px solid var(--border);
}
.kf-modal__title {
    margin: 0;
    font-size: var(--text-lg);
    font-weight: 600;
    color: var(--heading-color);
}
.kf-modal__close {
    border: none;
    background: transparent;
    color: var(--text-muted);
    font-size: 1.25rem;
    line-height: 1;
    cursor: pointer;
    padding: 0.15rem 0.4rem;
    border-radius: var(--radius-sm);
    transition: background-color var(--transition), color var(--transition);
}
.kf-modal__close:hover { background-color: var(--surface-2); color: var(--text); }
.kf-modal__body { padding: var(--space-5); overflow-y: auto; }
.kf-modal__footer {
    display: flex;
    justify-content: flex-end;
    gap: var(--space-2);
    padding: var(--space-4) var(--space-5);
    border-top: 1px solid var(--border);
}

/* ===========================================================
   FORM FIELD  (FormField.razor)
   =========================================================== */
.kf-field { margin-bottom: var(--space-4); }
.kf-field__label {
    display: block;
    margin-bottom: var(--space-2);
    font-weight: 500;
    font-size: var(--text-sm);
    color: var(--text);
}
.kf-field__hint {
    margin-top: var(--space-1);
    font-size: var(--text-xs);
    color: var(--text-muted);
}
/* responsive 2-column form grid for dense editors */
.kf-form-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 0 var(--space-4);
}
.kf-form-grid .kf-field--full { grid-column: 1 / -1; }

/* ===========================================================
   AUTH CARD  (AuthCard.razor)
   =========================================================== */
.kf-auth {
    display: flex;
    justify-content: center;
    padding: var(--space-8) var(--space-4);
}
.kf-auth__card {
    width: 100%;
    max-width: 26rem;
    background-color: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    overflow: hidden;
}
.kf-auth__body { padding: var(--space-6); }
.kf-auth__title {
    margin: 0 0 var(--space-2);
    font-size: var(--text-xl);
    font-weight: 700;
    text-align: center;
    color: var(--heading-color);
}
.kf-auth__footer {
    padding: var(--space-4) var(--space-6);
    border-top: 1px solid var(--border);
    background-color: var(--surface-2);
    text-align: center;
    font-size: var(--text-sm);
}

/* ===========================================================
   DATA TABLE wrapper (DataTable / EventTable)
   density handled by global .table refinements in app.css;
   this only adds the card frame + horizontal scroll.
   =========================================================== */
.kf-table-card {
    background-color: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    box-shadow: var(--shadow-xs);
    overflow: hidden;
}
.kf-table-card .table { margin-bottom: 0; }
.kf-table-scroll { overflow-x: auto; }

/* ===========================================================
   STREAM LISTEN — constrained reading width
   =========================================================== */
.kf-stream { max-width: 600px; }