/* =========================
   Base / Font
========================= */
:root{
    --font-sans: "Helvetica Neue", Helvetica, Arial, system-ui, -apple-system, "Segoe UI", Roboto, "Noto Sans", "Liberation Sans", sans-serif;

    --bg-soft: #f8f9fa;
    --bg-card: #ffffff;
    --text: #1f2937;
    --text-muted: #6b7280;

    --border: #e5e7eb;
    --border-strong: #d1d5db;

    --primary: #3b82f6;
    --primary-hover: #2563eb;

    --danger: #ef4444;

    --shadow-lg: 0 20px 50px rgba(0,0,0,.15);
}

.knowledge-admin-toolbar,
.knowledge-modal,
.knowledge-modal-content,
.knowledge-modal-header,
.knowledge-modal-body,
.knowledge-modal-footer,
.form-label,
.form-input,
.btn,
.btn-icon,
.category-item {
    font-family: var(--font-sans);
}

/* =========================
   Admin-Toolbar
========================= */
.knowledge-admin-toolbar {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    margin-top: 1.5rem;
    padding: 1rem;
    background: var(--bg-soft);
    border-radius: 8px;
    justify-content: center;
    border: 1px solid var(--border);
}

/* =========================
   Artikel-Admin-Actions
========================= */
.article-admin-actions {
    position: absolute;
    top: 1rem;
    right: 1rem;
    display: flex;
    gap: 0.5rem;
    opacity: 0;
    transition: opacity 0.2s ease;
    z-index: 2;
}

.knowledge-card:hover .article-admin-actions {
    opacity: 1;
}

.btn-icon {
    padding: 0.5rem;
    background: var(--bg-card);
    border: 1px solid var(--border-strong);
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.2s ease;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    line-height: 1;
}

.btn-icon:hover {
    background: #f3f4f6;
    border-color: var(--primary);
    color: var(--primary);
}

.btn-icon-danger:hover {
    background: #fee;
    border-color: var(--danger);
    color: var(--danger);
}

/* Optional: bessere Klickfläche, wenn Icons SVG sind */
.btn-icon svg {
    width: 18px;
    height: 18px;
}

/* =========================
   Knowledge Modal
========================= */
.knowledge-modal {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.7);
    z-index: 9999;

    display: flex;
    align-items: center;
    justify-content: center;

    padding: 2rem;

    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
}

.knowledge-modal.active {
    opacity: 1;
    pointer-events: auto;
}

.knowledge-modal-content {
    background: var(--bg-card);
    border-radius: 12px;
    max-width: 800px;
    width: 100%;
    max-height: 90vh;
    overflow: hidden; /* Header/Footer fix, Body scrollt */
    display: flex;
    flex-direction: column;
    box-shadow: var(--shadow-lg);

    transform: translateY(10px) scale(0.99);
    transition: transform 0.3s ease;
}

.knowledge-modal.active .knowledge-modal-content {
    transform: translateY(0) scale(1);
}

.knowledge-modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem 2rem;
    border-bottom: 1px solid var(--border);
    background: #fff;
}

.knowledge-modal-header h2 {
    margin: 0;
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text);
}

.knowledge-modal-close {
    background: none;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    padding: 0.5rem;
    border-radius: 6px;
    transition: all 0.2s ease;
}

.knowledge-modal-close:hover {
    background: #f3f4f6;
    color: var(--text);
}

.knowledge-modal-body {
    padding: 2rem;
    flex: 1;
    overflow-y: auto;
}

/* nice scrollbar (optional) */
.knowledge-modal-body::-webkit-scrollbar {
    width: 10px;
}
.knowledge-modal-body::-webkit-scrollbar-thumb {
    background: #d1d5db;
    border-radius: 999px;
    border: 2px solid #fff;
}
.knowledge-modal-body::-webkit-scrollbar-track {
    background: #fff;
}

.knowledge-modal-footer {
    display: flex;
    justify-content: flex-end;
    gap: 1rem;
    padding: 1.5rem 2rem;
    border-top: 1px solid var(--border);
    background: #fff;
}

/* =========================
   Form Styles
========================= */
.form-grid {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.form-label {
    font-weight: 500;
    color: #374151;
    font-size: 0.875rem;
}

.form-input {
    padding: 0.75rem 1rem;
    border: 1px solid var(--border-strong);
    border-radius: 6px;
    font-size: 1rem;
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
    background: #fff;
    color: var(--text);
}

.form-input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.12);
}

.form-input::placeholder {
    color: #9ca3af;
}

.form-checkboxes {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.form-checkboxes label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    cursor: pointer;
    color: var(--text);
}

.form-checkboxes input[type="checkbox"] {
    width: 18px;
    height: 18px;
    cursor: pointer;
}

/* =========================
   Category List
========================= */
.category-list {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.category-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem;
    background: #f9fafb;
    border-radius: 8px;
    border: 1px solid var(--border);
}

.category-icon {
    font-size: 1.5rem;
}

.category-name {
    flex: 1;
    font-weight: 500;
    color: var(--text);
}

.category-actions {
    display: flex;
    gap: 0.5rem;
}

/* =========================
   Buttons
========================= */
.btn {
    padding: 0.75rem 1.5rem;
    border: 1px solid transparent;
    border-radius: 6px;
    font-weight: 500;
    cursor: pointer;
    transition: background 0.2s ease, border-color 0.2s ease, transform 0.02s ease;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    user-select: none;
}

.btn:active {
    transform: translateY(1px);
}

.btn-primary {
    background: var(--primary);
    color: white;
}

.btn-primary:hover {
    background: var(--primary-hover);
}

.btn-secondary {
    background: #6b7280;
    color: white;
}

.btn-secondary:hover {
    background: #4b5563;
}

/* Optional: Danger-Button, falls du ihn brauchst */
.btn-danger {
    background: var(--danger);
    color: white;
}
.btn-danger:hover {
    filter: brightness(0.95);
}

/* =========================
   Mobile Responsive
========================= */
@media (max-width: 768px) {
    .knowledge-modal {
        padding: 1rem;
    }

    .knowledge-modal-content {
        max-height: 95vh;
    }

    .knowledge-modal-header,
    .knowledge-modal-body,
    .knowledge-modal-footer {
        padding: 1rem;
    }

    /* auf Mobile immer sichtbar, weil Hover fehlt */
    .article-admin-actions {
        opacity: 1;
    }

    .knowledge-admin-toolbar {
        justify-content: stretch;
    }

    .btn {
        width: 100%;
        justify-content: center;
    }

    .knowledge-modal-footer {
        flex-direction: column-reverse;
        align-items: stretch;
    }
}