/* ==========================================================================
   BCF CENTER — Shared BCF Center component styles
   Covers: modal dialog, side popup, and embedded display modes.
   Uses design tokens from site.css.
   Session 1.4 — shell layout (header, metadata grid, sections, comments).
   ========================================================================== */

/* --------------------------------------------------------------------------
   BACKDROP OVERRIDE
   The BCF Center uses the shared .modal-backdrop/.drawer-overlay classes for
   its backdrop.  The dialog/panel size overrides live here.
   -------------------------------------------------------------------------- */

/* Modal dialog box */
.bcf-center-dialog {
    position: relative;
    background: var(--color-white);
    border-radius: var(--radius-medium);
    box-shadow: var(--shadow-lg);
    width: min(860px, 95vw);
    max-height: 90vh;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

/* Side popup panel */
.bcf-center-side-popup {
    position: fixed;
    top: 0;
    right: 0;
    bottom: 0;
    width: min(520px, 100vw);
    background: var(--color-white);
    box-shadow: var(--shadow-lg);
    display: flex;
    flex-direction: column;
    overflow: hidden;
    animation: bcfCenterSlideIn 0.2s ease-out;
}

@keyframes bcfCenterSlideIn {
    from { transform: translateX(100%); }
    to   { transform: translateX(0); }
}

/* Embedded — no overlay */
.bcf-center-embedded {
    border: 1px solid var(--color-border-subtle);
    border-radius: var(--radius-medium);
    background: var(--color-white);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
}

/* --------------------------------------------------------------------------
   INNER LAYOUT
   -------------------------------------------------------------------------- */

.bcf-center-layout {
    display: flex;
    flex-direction: column;
    height: 100%;
    overflow: hidden;
}

/* ── Sticky header ────────────────────────────────────────────────────────── */

.bcf-center-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-12);
    padding: var(--space-16) var(--space-20);
    border-bottom: 1px solid var(--color-border-subtle);
    background: var(--color-white);
    position: sticky;
    top: 0;
    z-index: 10;
    flex-shrink: 0;
}

.bcf-center-header-title {
    display: flex;
    align-items: center;
    gap: var(--space-8);
    min-width: 0;
    flex: 1;
}

.bcf-center-title-text {
    font-size: 1rem;
    font-weight: 600;
    color: var(--color-text-primary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.bcf-center-name-label {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--color-text-muted);
    white-space: nowrap;
    flex-shrink: 0;
    text-transform: uppercase;
    letter-spacing: 0.03em;
}

.bcf-center-status-badge {
    display: inline-flex;
    align-items: center;
    padding: 2px var(--space-8);
    border-radius: var(--radius-small);
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--color-white);
    white-space: nowrap;
    flex-shrink: 0;
}

.bcf-center-status-badge--new        { background: var(--bcf-status-new); }
.bcf-center-status-badge--inprogress { background: var(--bcf-status-in-progress); }
.bcf-center-status-badge--waiting    { background: var(--bcf-status-waiting); }
.bcf-center-status-badge--done       { background: var(--bcf-status-done); }
.bcf-center-status-badge--closed     { background: var(--bcf-status-closed); }
.bcf-center-status-badge--default    { background: var(--color-grey-300); color: var(--color-text-secondary); }

.bcf-status-dot {
    display: inline-block;
    width: 10px;
    height: 10px;
    border-radius: 50%;
    flex-shrink: 0;
    margin-right: 6px;
}

.bcf-status-dot--new        { background: var(--bcf-status-new); }
.bcf-status-dot--inprogress { background: var(--bcf-status-in-progress); }
.bcf-status-dot--waiting    { background: var(--bcf-status-waiting); }
.bcf-status-dot--done       { background: var(--bcf-status-done); }
.bcf-status-dot--closed     { background: var(--bcf-status-closed); }
.bcf-status-dot--default    { background: var(--color-grey-300); }

.bcf-center-header-actions {
    display: flex;
    align-items: center;
    gap: var(--space-4);
    flex-shrink: 0;
}

/* BCF GUID line below the header */
.bcf-center-guid {
    padding: var(--space-4) var(--space-20);
    font-size: 0.75rem;
    border-bottom: 1px solid var(--color-border-subtle);
    background: var(--color-grey-50);
    flex-shrink: 0;
}

.bcf-center-guid code {
    font-family: monospace;
    font-size: 0.75rem;
}

/* ── Loading / error states ──────────────────────────────────────────────── */

.bcf-center-alert {
    margin: var(--space-12) var(--space-20) 0;
    flex-shrink: 0;
}

.bcf-center-loading {
    display: flex;
    align-items: center;
    gap: var(--space-8);
    padding: var(--space-24) var(--space-20);
    color: var(--color-text-muted);
    font-size: 0.9rem;
}

/* ── Scrollable body ─────────────────────────────────────────────────────── */

.bcf-center-body {
    flex: 1;
    overflow: hidden;
    padding: var(--space-20);
    display: flex;
    flex-direction: column;
    min-height: 0;
}

.bcf-center-tab-content {
    height: clamp(320px, 52vh, 560px);
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: var(--space-16);
    padding-right: var(--space-4);
}

/* ── Section card ────────────────────────────────────────────────────────── */

.bcf-center-section {
    border: 1px solid var(--color-border-subtle);
    border-radius: var(--radius-medium);
    padding: var(--space-16);
    background: var(--color-white);
}

.bcf-center-tabs {
    justify-content: center;
    overflow-x: auto;
    padding: 0 var(--space-12);
}

.bcf-center-section-title {
    font-size: 0.85rem;
    font-weight: 600;
    /* h2 uses TC Web dark-blue text per StylingCSS.md §4.4 */
    color: var(--color-brand-primary-dark);
    margin: 0 0 var(--space-12) 0;
    display: flex;
    align-items: center;
    gap: var(--space-8);
}

/* ── Metadata grid (two-column) ──────────────────────────────────────────── */

.bcf-center-metadata-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-12) var(--space-20);
}

.bcf-center-meta-field {
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
}

.bcf-center-meta-value {
    display: flex;
    align-items: center;
    gap: var(--space-6);
    font-size: 0.9rem;
    color: var(--color-text-secondary);
}

.bcf-center-status-dot {
    display: inline-block;
    width: 10px;
    height: 10px;
    border-radius: 50%;
    flex-shrink: 0;
}

/* ── Description ─────────────────────────────────────────────────────────── */

.bcf-center-description {
    font-size: 0.9rem;
    color: var(--color-text-secondary);
    white-space: pre-wrap;
    line-height: 1.5;
}

/* ── Session 1.7 live-link sections ───────────────────────────────────────── */

.bcf-center-section-toolbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-12);
    margin-bottom: var(--space-12);
}

.bcf-center-section-summary {
    font-size: 0.78rem;
    color: var(--color-text-muted);
}

.bcf-center-images-toolbar-actions {
    display: flex;
    align-items: center;
    gap: var(--space-8);
    flex-wrap: wrap;
    justify-content: flex-end;
}

.bcf-center-upload-folder-select {
    min-width: 12rem;
    max-width: 18rem;
}

.bcf-center-upload-folder-hint {
    display: block;
    margin-bottom: var(--space-8);
    font-size: 0.78rem;
}

.bcf-center-links-hint {
    margin: 0;
    font-size: 0.85rem;
    line-height: 1.4;
}

.bcf-center-link-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-8);
}

.bcf-center-link-row {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: var(--space-12);
    padding: var(--space-12);
    border: 1px solid var(--color-border-subtle);
    border-radius: var(--radius-small);
    background: var(--color-grey-50);
}

.bcf-center-link-main {
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
    min-width: 0;
}

.bcf-center-link-title {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--color-text-primary);
    word-break: break-word;
}

.bcf-center-link-subtitle {
    font-size: 0.78rem;
    color: var(--color-text-muted);
    word-break: break-word;
}

/* ── Comments ────────────────────────────────────────────────────────────── */

.bcf-center-comment-count {
    font-weight: normal;
    color: var(--color-text-muted);
}

.bcf-center-comment-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-12);
}

.bcf-center-comment-item {
    border-left: 3px solid var(--color-brand-primary-light);
    padding-left: var(--space-12);
}

.bcf-center-comment-meta {
    display: flex;
    gap: var(--space-12);
    font-size: 0.78rem;
    margin-bottom: var(--space-4);
}

.bcf-center-comment-body {
    font-size: 0.9rem;
    color: var(--color-text-secondary);
    white-space: pre-wrap;
}

/* ── Session 1.8 — add-comment form & description editor ─────────────────── */

.bcf-center-comment-add-form {
    display: flex;
    flex-direction: column;
    gap: var(--space-8);
    margin-top: var(--space-16);
}

.bcf-center-comment-textarea {
    width: 100%;
}

.bcf-center-comment-add-actions {
    display: flex;
    gap: var(--space-8);
    align-items: center;
}

.bcf-center-description-editor {
    width: 100%;
}

/* --------------------------------------------------------------------------
   RESPONSIVE — narrow viewports
   -------------------------------------------------------------------------- */

@media (max-width: 480px) {
    .bcf-center-metadata-grid {
        grid-template-columns: 1fr;
    }

    .bcf-center-dialog {
        width: 100vw;
        max-height: 100vh;
        border-radius: 0;
    }
}

/* --------------------------------------------------------------------------
   BCF CENTER TITLE INPUT
   -------------------------------------------------------------------------- */

.bcf-center-title-input {
    width: 100%;
    background: transparent;
    border: none;
    outline: none;
    font-size: 1.15rem;
    font-weight: 600;
    color: var(--color-brand-primary-dark);
    padding: 0;
    resize: none;
}

    .bcf-center-title-input:focus {
        border-bottom: 2px solid var(--color-brand-primary);
    }

/* --------------------------------------------------------------------------
   BCF CENTER FOOTER
   -------------------------------------------------------------------------- */

.bcf-center-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 20px;
    border-top: 1px solid var(--color-border);
    flex-shrink: 0;
}

.bcf-center-footer-right {
    display: flex;
    align-items: center;
    gap: 8px;
}