/* Knowledge Curator — Edge promotion review queue */

.kc-overlay {
    position: fixed;
    top: var(--nav-height, 60px);
    left: var(--side-nav-width, 60px);
    right: 0;
    bottom: 0;
    background: var(--color-bg-secondary, #f3f4f6);
    z-index: 50;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

/* Header — purple gradient matching tools group */
.kc-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 20px;
    background: linear-gradient(135deg, #8b5cf6, #7c3aed);
    color: white;
    flex-shrink: 0;
    gap: 12px;
}

.kc-header-left {
    display: flex;
    align-items: center;
    gap: 12px;
}

.kc-close-btn {
    background: rgba(255,255,255,0.2);
    border: none;
    color: white;
    width: 32px;
    height: 32px;
    border-radius: 8px;
    cursor: pointer;
    font-size: calc(16px * var(--type-scale, 1));
    display: flex;
    align-items: center;
    justify-content: center;
}

.kc-close-btn:hover {
    background: rgba(255,255,255,0.3);
}

.kc-title {
    font-size: calc(1.1rem * var(--type-scale, 1));
    font-weight: 600;
}

.kc-header-right {
    display: flex;
    align-items: center;
    gap: 16px;
    font-size: calc(0.85rem * var(--type-scale, 1));
}

.kc-progress {
    opacity: 0.9;
}

.kc-stats {
    display: flex;
    gap: 10px;
}

.kc-stat {
    display: flex;
    align-items: center;
    gap: 3px;
}

.kc-stat-promote { color: #86efac; }
.kc-stat-dismiss { color: #d1d5db; }
.kc-stat-demote { color: #fca5a5; }

/* Body — centered candidate card */
.kc-body {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 24px;
    overflow-y: auto;
}

.kc-candidate-card {
    background: white;
    border-radius: 16px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.1);
    padding: 32px;
    max-width: 700px;
    width: 100%;
}

/* Thumbnail pair */
.kc-thumbnail-pair {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 24px;
    margin-bottom: 24px;
}

.kc-media-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    cursor: pointer;
    flex: 1;
    max-width: 220px;
}

.kc-media-item:hover .kc-thumb {
    transform: scale(1.03);
    box-shadow: 0 4px 16px rgba(0,0,0,0.15);
}

.kc-thumb {
    width: 200px;
    height: 200px;
    object-fit: cover;
    border-radius: 12px;
    border: 2px solid var(--color-border, #e5e7eb);
    transition: all 0.2s;
}

.kc-media-name {
    font-size: calc(0.8rem * var(--type-scale, 1));
    color: var(--color-text-light, #6b7280);
    text-align: center;
    max-width: 200px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

/* Connection info between thumbnails */
.kc-connection {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6px;
    flex-shrink: 0;
}

.kc-signal-badge {
    background: linear-gradient(135deg, #8b5cf6, #7c3aed);
    color: white;
    padding: 4px 10px;
    border-radius: 12px;
    font-size: calc(0.75rem * var(--type-scale, 1));
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.kc-entity-label {
    font-size: calc(0.9rem * var(--type-scale, 1));
    color: var(--color-text, #1f2937);
    font-weight: 500;
    max-width: 120px;
    text-align: center;
    word-break: break-word;
}

.kc-score {
    font-size: calc(0.8rem * var(--type-scale, 1));
    color: var(--color-text-light, #6b7280);
}

.kc-score-value {
    font-weight: 600;
    color: #f59e0b;
}

/* Verdict buttons */
.kc-actions-row {
    display: flex;
    gap: 12px;
    margin-top: 24px;
}

.kc-verdict-btn {
    flex: 1;
    padding: 14px 16px;
    border: 2px solid transparent;
    border-radius: 12px;
    font-size: calc(0.95rem * var(--type-scale, 1));
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
}

.kc-verdict-btn:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(0,0,0,0.15);
}

.kc-verdict-btn:active {
    transform: translateY(0);
}

.kc-btn-promote {
    background: #dcfce7;
    color: #166534;
    border-color: #86efac;
}
.kc-btn-promote:hover { background: #bbf7d0; }

.kc-btn-dismiss {
    background: #f3f4f6;
    color: #4b5563;
    border-color: #d1d5db;
}
.kc-btn-dismiss:hover { background: #e5e7eb; }

.kc-btn-demote {
    background: #fee2e2;
    color: #991b1b;
    border-color: #fca5a5;
}
.kc-btn-demote:hover { background: #fecaca; }

.kc-verdict-key {
    font-size: calc(0.7rem * var(--type-scale, 1));
    opacity: 0.6;
    text-transform: uppercase;
}

/* Navigation row */
.kc-nav-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 16px;
    padding-top: 16px;
    border-top: 1px solid var(--color-border, #e5e7eb);
}

.kc-nav-btn {
    background: none;
    border: 1px solid var(--color-border, #e5e7eb);
    border-radius: 8px;
    padding: 8px 16px;
    cursor: pointer;
    color: var(--color-text-light, #6b7280);
    font-size: calc(0.85rem * var(--type-scale, 1));
    transition: all 0.2s;
}

.kc-nav-btn:hover:not(:disabled) {
    background: var(--color-bg-secondary, #f3f4f6);
    color: var(--color-text, #1f2937);
}

.kc-nav-btn:disabled {
    opacity: 0.3;
    cursor: default;
}

/* Keyboard hints */
.kc-hints {
    text-align: center;
    font-size: calc(0.75rem * var(--type-scale, 1));
    color: var(--color-text-lighter, #9ca3af);
    margin-top: 12px;
}

/* Empty/complete state */
.kc-empty {
    text-align: center;
    padding: 48px 24px;
}

.kc-empty-icon {
    font-size: calc(3rem * var(--type-scale, 1));
    margin-bottom: 16px;
}

.kc-empty-title {
    font-size: calc(1.2rem * var(--type-scale, 1));
    font-weight: 600;
    color: var(--color-text, #1f2937);
    margin-bottom: 8px;
}

.kc-empty-text {
    color: var(--color-text-light, #6b7280);
}

/* Loading state */
.kc-loading {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 48px;
    color: var(--color-text-light, #6b7280);
}

/* ============================================================
   MOBILE: Single-column stack (<768px)
   ============================================================ */
@media (max-width: 767px) {
    .kc-overlay {
        left: 0;
        top: var(--nav-height, 60px);
    }

    .kc-header {
        flex-wrap: wrap;
        padding: 10px 14px;
        gap: 6px;
    }

    .kc-header-right {
        flex-basis: 100%;
        justify-content: space-between;
        font-size: calc(0.75rem * var(--type-scale, 1));
    }

    .kc-body {
        padding: 12px;
    }

    .kc-candidate-card {
        padding: 16px;
    }

    .kc-thumbnail-pair {
        flex-direction: column;
        gap: 12px;
    }

    .kc-thumb {
        width: 150px;
        height: 150px;
    }

    .kc-media-name {
        max-width: 150px;
    }

    .kc-connection {
        flex-direction: row;
        gap: 10px;
    }

    .kc-actions-row {
        flex-direction: column;
        gap: 8px;
    }

    .kc-verdict-btn {
        padding: 12px;
    }

    .kc-hints {
        display: none;
    }
}