/**
 * Patriot University — Knowledge Base + Chatbot Styles (WordPress)
 * WCAG 2.1 AA compliant. System font stack only — no external resources.
 * Works with any WordPress theme via scoped class selectors.
 */

/* ── Base reset within our components ────────────────────────────────────── */
.patriot-kb-browser *,
.patriot-chatbot *,
.patriot-chatbot-launcher * {
    box-sizing: border-box;
}

/* ── Typography ──────────────────────────────────────────────────────────── */
.patriot-kb-browser,
.patriot-chatbot,
.patriot-chatbot-launcher {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    font-size: 16px;
    line-height: 1.5;
    color: #1a1a2e;
}

/* ── Color tokens (canonical — aligned with theme tokens.pu.css) ──────────── */
:root {
    --pu-navy:       #1a3a6b;
    --pu-navy-dark:  #0f2447;
    --pu-navy-light: #e8eef8;
    --pu-parchment:  #FBF7EE;
    --pu-ink:        #1A1A2E;
    --pu-gold:       #B8860B;
    --pu-red:        #c0392b;
    --pu-green:      #27ae60;
    --pu-gray-50:    #f8f9fa;
    --pu-gray-100:   #f1f3f4;
    --pu-gray-200:   #e2e8f0;
    --pu-gray-400:   #94a3b8;
    --pu-gray-600:   #475569;
    --pu-white:      #ffffff;
    --pu-radius:     8px;
    --pu-radius-lg:  12px;
    --pu-shadow:     0 2px 8px rgba(0,0,0,0.12);
    --pu-shadow-lg:  0 8px 32px rgba(0,0,0,0.18);
    --pu-touch:      44px;
}

/* ── Search bar ──────────────────────────────────────────────────────────── */
.patriot-kb-search-wrap {
    position: relative;
    margin-bottom: 16px;
}

.patriot-kb-search-input {
    width: 100%;
    padding: 10px 40px 10px 40px;
    font-size: 16px;
    border: 2px solid var(--pu-gray-200);
    border-radius: 100px;
    background: var(--pu-white);
    color: #1a1a2e;
    outline: none;
    min-height: var(--pu-touch);
    transition: border-color 0.15s;
}
.patriot-kb-search-input:focus { border-color: var(--pu-navy); }

.patriot-kb-search-icon {
    position: absolute;
    left: 14px;
    top: 50%;
    transform: translateY(-50%);
    pointer-events: none;
    font-size: 1rem;
}

.patriot-kb-search-clear {
    position: absolute;
    right: 10px;
    top: 50%;
    transform: translateY(-50%);
    background: var(--pu-gray-200);
    border: none;
    color: var(--pu-gray-600);
    width: 26px; height: 26px;
    border-radius: 50%;
    cursor: pointer;
    font-size: 1rem;
    display: flex; align-items: center; justify-content: center;
}

/* ── Category chips ──────────────────────────────────────────────────────── */
.patriot-kb-categories {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 20px;
}

.patriot-cat-chip {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 14px;
    border: 2px solid var(--pu-gray-200);
    border-radius: 100px;
    background: var(--pu-white);
    color: var(--pu-gray-600);
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    min-height: var(--pu-touch);
    transition: border-color 0.15s, background 0.15s, color 0.15s;
}
.patriot-cat-chip:hover { border-color: var(--pu-navy); color: var(--pu-navy); }
.patriot-cat-chip--active {
    background: var(--pu-navy);
    border-color: var(--pu-navy);
    color: var(--pu-white);
}
.patriot-cat-count {
    background: rgba(0,0,0,0.1);
    border-radius: 100px;
    padding: 0 6px;
    font-size: 12px;
}
.patriot-cat-chip--active .patriot-cat-count { background: rgba(255,255,255,0.2); }

/* ── Document grid ───────────────────────────────────────────────────────── */
.patriot-kb-section { margin-bottom: 32px; }

.patriot-kb-section-title {
    font-size: 18px;
    font-weight: 700;
    color: var(--pu-navy);
    margin-bottom: 14px;
    padding-bottom: 8px;
    border-bottom: 2px solid var(--pu-gray-100);
}

.patriot-kb-cards {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: 14px;
}

.patriot-kb-card {
    display: flex;
    gap: 12px;
    padding: 16px;
    border: 1px solid var(--pu-gray-200);
    border-radius: var(--pu-radius-lg);
    background: var(--pu-white);
    cursor: pointer;
    transition: box-shadow 0.15s, border-color 0.15s, transform 0.1s;
    min-height: var(--pu-touch);
}
.patriot-kb-card:hover {
    box-shadow: var(--pu-shadow);
    border-color: var(--pu-navy);
    transform: translateY(-1px);
}
.patriot-kb-card:focus {
    outline: 3px solid var(--pu-navy);
    outline-offset: 2px;
}

.patriot-kb-card-icon { font-size: 24px; flex-shrink: 0; }
.patriot-kb-card-body { display: flex; flex-direction: column; gap: 4px; }
.patriot-kb-card-title { font-weight: 700; font-size: 15px; color: var(--pu-navy); }
.patriot-kb-card-summary { font-size: 13px; color: var(--pu-gray-600); line-height: 1.5; }
.patriot-kb-card-meta { font-size: 12px; color: var(--pu-gray-400); margin-top: 4px; }

.patriot-state-tag,
.patriot-kb-state-badge {
    display: inline-block;
    font-size: 11px;
    font-weight: 700;
    padding: 1px 6px;
    background: rgba(39,174,96,0.12);
    color: var(--pu-green);
    border-radius: 4px;
    vertical-align: middle;
}

.patriot-kb-cat-badge {
    display: inline-block;
    font-size: 12px;
    padding: 2px 10px;
    background: var(--pu-navy-light);
    color: var(--pu-navy);
    border-radius: 100px;
    font-weight: 600;
}

/* ── Search results ──────────────────────────────────────────────────────── */
.patriot-kb-results-meta {
    font-size: 13px;
    color: var(--pu-gray-600);
    margin-bottom: 10px;
}

.patriot-kb-results-list { list-style: none; padding: 0; margin: 0; }

.patriot-kb-result { border-bottom: 1px solid var(--pu-gray-100); }
.patriot-kb-result:last-child { border-bottom: none; }

.patriot-kb-result-link {
    display: flex;
    gap: 12px;
    padding: 12px 0;
    color: inherit;
    text-decoration: none;
}
.patriot-kb-result-link:hover .patriot-kb-result-title { text-decoration: underline; }

.patriot-kb-result-icon { font-size: 20px; flex-shrink: 0; }
.patriot-kb-result-body { display: flex; flex-direction: column; gap: 2px; }
.patriot-kb-result-title { font-weight: 600; color: var(--pu-navy); font-size: 15px; }
.patriot-kb-result-cat { font-size: 11px; color: var(--pu-gray-400); text-transform: uppercase; letter-spacing: 0.05em; }
.patriot-kb-result-summary { font-size: 13px; color: var(--pu-gray-600); }

/* ── Document detail ─────────────────────────────────────────────────────── */
.patriot-kb-detail-header { margin-bottom: 16px; }

.patriot-kb-back-btn {
    background: none;
    border: none;
    color: var(--pu-navy);
    font-size: 14px;
    cursor: pointer;
    padding: 8px 0;
    display: flex;
    align-items: center;
    gap: 4px;
    min-height: var(--pu-touch);
}
.patriot-kb-back-btn:hover { text-decoration: underline; }

.patriot-kb-doc-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    align-items: center;
    margin-bottom: 10px;
}

.patriot-kb-wordcount { font-size: 12px; color: var(--pu-gray-400); }

.patriot-kb-doc-title {
    font-size: 24px;
    font-weight: 700;
    color: var(--pu-navy);
    margin: 0 0 16px;
    line-height: 1.3;
}

.patriot-kb-doc-body.prose {
    font-size: 16px;
    line-height: 1.7;
    color: #2d3748;
    max-width: 70ch;
}
.patriot-kb-doc-body.prose h1,
.patriot-kb-doc-body.prose h2,
.patriot-kb-doc-body.prose h3,
.patriot-kb-doc-body.prose h4 {
    color: var(--pu-navy);
    font-weight: 700;
    margin: 1.5em 0 0.5em;
}
.patriot-kb-doc-body.prose h2 { font-size: 20px; }
.patriot-kb-doc-body.prose h3 { font-size: 17px; }
.patriot-kb-doc-body.prose p  { margin: 0 0 1em; }
.patriot-kb-doc-body.prose ul,
.patriot-kb-doc-body.prose ol { padding-left: 24px; margin: 0 0 1em; }
.patriot-kb-doc-body.prose li { margin-bottom: 4px; }
.patriot-kb-doc-body.prose blockquote {
    border-left: 4px solid var(--pu-navy);
    padding: 8px 16px;
    margin: 1em 0;
    background: var(--pu-navy-light);
    border-radius: 0 var(--pu-radius) var(--pu-radius) 0;
}
.patriot-kb-doc-body.prose code {
    background: var(--pu-gray-100);
    padding: 2px 5px;
    border-radius: 4px;
    font-size: 0.9em;
}

.patriot-kb-doc-actions { margin-top: 24px; }

/* Buttons */
.patriot-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 10px 20px;
    border-radius: var(--pu-radius);
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    border: 2px solid transparent;
    min-height: var(--pu-touch);
    text-decoration: none;
    transition: background 0.15s, border-color 0.15s, transform 0.1s;
}
.patriot-btn:focus { outline: 3px solid var(--pu-navy); outline-offset: 2px; }
.patriot-btn-primary { background: var(--pu-navy); color: var(--pu-white); }
.patriot-btn-primary:hover { background: var(--pu-navy-dark); transform: translateY(-1px); }

/* ── Loading / Spinner ────────────────────────────────────────────────────── */
.patriot-kb-loading {
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--pu-gray-600);
    padding: 24px 0;
}

.patriot-spinner {
    display: inline-block;
    width: 20px; height: 20px;
    border: 2px solid var(--pu-gray-200);
    border-top-color: var(--pu-navy);
    border-radius: 50%;
    animation: patriot-spin 0.7s linear infinite;
    flex-shrink: 0;
}
@keyframes patriot-spin { to { transform: rotate(360deg); } }

/* ── Error ───────────────────────────────────────────────────────────────── */
.patriot-kb-error { padding: 24px 0; }
.patriot-kb-error-msg { color: var(--pu-red); margin-bottom: 12px; }
.patriot-error { color: var(--pu-red); }

/* ── Chatbot Launcher ────────────────────────────────────────────────────── */
.patriot-chatbot-launcher {
    position: fixed;
    bottom: 24px;
    right: 24px;
    z-index: 9500;
    display: flex;
    align-items: center;
    gap: 8px;
    background: var(--pu-navy);
    color: var(--pu-white);
    border: none;
    border-radius: 100px;
    padding: 10px 20px;
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    box-shadow: var(--pu-shadow-lg);
    min-height: var(--pu-touch);
    transition: background 0.15s, transform 0.1s;
}
.patriot-chatbot-launcher:hover {
    background: var(--pu-navy-dark);
    transform: translateY(-2px);
}
.patriot-chatbot-launcher:focus { outline: 3px solid var(--pu-navy); outline-offset: 3px; }

/* ── Chatbot Floating Panel ──────────────────────────────────────────────── */
.patriot-chatbot--floating {
    position: fixed;
    bottom: calc(24px + 56px + 12px);
    right: 24px;
    z-index: 9600;
    width: min(420px, calc(100vw - 32px));
    max-height: min(580px, calc(100vh - 120px));
}

.patriot-chatbot-panel {
    display: flex;
    flex-direction: column;
    background: var(--pu-white);
    border-radius: var(--pu-radius-lg);
    box-shadow: var(--pu-shadow-lg);
    overflow: hidden;
    border: 1px solid var(--pu-gray-200);
    height: 100%;
    max-height: inherit;
}

.patriot-chatbot--inline .patriot-chatbot-panel {
    position: relative;
    box-shadow: var(--pu-shadow);
    border-radius: var(--pu-radius-lg);
    height: 500px;
}

/* ── Chat Header ─────────────────────────────────────────────────────────── */
.patriot-chatbot-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: var(--pu-navy);
    color: var(--pu-white);
    padding: 12px 16px;
    flex-shrink: 0;
}

.patriot-chatbot-title-row { display: flex; align-items: center; gap: 8px; }
.patriot-chatbot-icon { font-size: 18px; }
.patriot-chatbot-title { font-size: 15px; font-weight: 700; margin: 0; color: var(--pu-white); }
.patriot-chatbot-status { font-size: 12px; color: rgba(255,255,255,0.6); margin-left: 8px; }

.patriot-chatbot-header-actions { display: flex; gap: 6px; }
.patriot-chatbot-btn-close,
.patriot-chatbot-btn-clear {
    background: rgba(255,255,255,0.15);
    border: none;
    color: var(--pu-white);
    width: 30px; height: 30px;
    border-radius: 50%;
    cursor: pointer;
    font-size: 15px;
    display: flex; align-items: center; justify-content: center;
    transition: background 0.15s;
}
.patriot-chatbot-btn-close:hover,
.patriot-chatbot-btn-clear:hover { background: rgba(255,255,255,0.25); }

/* ── Chat Controls ───────────────────────────────────────────────────────── */
.patriot-chatbot-controls {
    display: flex;
    gap: 8px;
    padding: 8px 12px;
    background: var(--pu-gray-50);
    border-bottom: 1px solid var(--pu-gray-200);
    flex-shrink: 0;
}

.patriot-chat-select {
    flex: 1;
    padding: 6px 10px;
    border: 1px solid var(--pu-gray-200);
    border-radius: var(--pu-radius);
    font-size: 13px;
    background: var(--pu-white);
    color: #1a1a2e;
    min-height: 36px;
}

/* ── Messages ────────────────────────────────────────────────────────────── */
.patriot-chatbot-messages {
    flex: 1;
    overflow-y: auto;
    padding: 14px;
    display: flex;
    flex-direction: column;
    gap: 10px;
    scroll-behavior: smooth;
}

.patriot-chatbot-welcome { text-align: center; padding: 12px; }
.patriot-chatbot-welcome-icon { font-size: 36px; margin-bottom: 8px; }
.patriot-chatbot-welcome h4 { font-size: 16px; color: var(--pu-navy); margin: 0 0 6px; }
.patriot-chatbot-welcome p { font-size: 13px; color: var(--pu-gray-600); margin: 0 0 12px; line-height: 1.6; }

.patriot-chatbot-suggestions { list-style: none; padding: 0; margin: 0; text-align: left; }
.patriot-chatbot-suggestions li { margin-bottom: 6px; }

.patriot-suggest-btn {
    width: 100%;
    text-align: left;
    padding: 10px 12px;
    background: var(--pu-gray-50);
    border: 1px solid var(--pu-gray-200);
    border-radius: var(--pu-radius);
    font-size: 13px;
    color: var(--pu-navy);
    cursor: pointer;
    min-height: var(--pu-touch);
    transition: background 0.15s;
}
.patriot-suggest-btn:hover { background: var(--pu-navy-light); }

.patriot-chatbot-bubble {
    max-width: 85%;
    padding: 10px 14px;
    border-radius: var(--pu-radius-lg);
    font-size: 14px;
    line-height: 1.6;
}

.patriot-chatbot-bubble--user {
    align-self: flex-end;
    background: var(--pu-navy);
    color: var(--pu-white);
    border-bottom-right-radius: 4px;
}

.patriot-chatbot-bubble--assistant {
    align-self: flex-start;
    background: var(--pu-gray-100);
    color: #2d3748;
    border-bottom-left-radius: 4px;
}
.patriot-chatbot-bubble--assistant p { margin: 0 0 6px; }
.patriot-chatbot-bubble--assistant p:last-child { margin: 0; }
.patriot-chatbot-bubble--assistant strong { font-weight: 700; }
.patriot-chatbot-bubble--assistant code {
    background: rgba(0,0,0,0.08);
    padding: 1px 4px;
    border-radius: 3px;
    font-size: 0.9em;
}

/* Typing dots */
.patriot-chatbot-typing {
    align-self: flex-start;
    display: flex;
    align-items: center;
    gap: 4px;
    padding: 12px 16px;
    background: var(--pu-gray-100);
    border-radius: var(--pu-radius-lg);
    border-bottom-left-radius: 4px;
}
.patriot-chatbot-typing span {
    width: 7px; height: 7px;
    background: var(--pu-gray-400);
    border-radius: 50%;
    animation: patriot-bounce 1.2s infinite;
    flex-shrink: 0;
}
.patriot-chatbot-typing span:nth-child(2) { animation-delay: 0.2s; }
.patriot-chatbot-typing span:nth-child(3) { animation-delay: 0.4s; }
@keyframes patriot-bounce {
    0%, 80%, 100% { transform: translateY(0); opacity: 0.5; }
    40%           { transform: translateY(-5px); opacity: 1; }
}

/* ── Sources ─────────────────────────────────────────────────────────────── */
.patriot-chatbot-sources {
    padding: 8px 14px;
    background: var(--pu-gray-50);
    border-top: 1px solid var(--pu-gray-200);
    flex-shrink: 0;
}

.patriot-chat-sources-label {
    display: block;
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--pu-gray-400);
    margin-bottom: 4px;
}

.patriot-chat-sources-list {
    list-style: none;
    padding: 0; margin: 0;
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
}

.patriot-source-chip {
    display: inline-block;
    font-size: 11px;
    padding: 2px 8px;
    background: var(--pu-navy-light);
    color: var(--pu-navy);
    border-radius: 100px;
    min-height: 24px;
    line-height: 20px;
}
.patriot-source-cat { color: var(--pu-gray-400); }

/* ── Input area ──────────────────────────────────────────────────────────── */
.patriot-chatbot-input-row {
    display: flex;
    gap: 8px;
    padding: 10px 12px;
    border-top: 1px solid var(--pu-gray-200);
    background: var(--pu-white);
    flex-shrink: 0;
    align-items: flex-end;
}

.patriot-chatbot-input {
    flex: 1;
    border: 1px solid var(--pu-gray-200);
    border-radius: var(--pu-radius);
    padding: 10px 12px;
    font-size: 14px;
    font-family: inherit;
    resize: none;
    line-height: 1.4;
    min-height: 44px;
    max-height: 120px;
    overflow-y: auto;
    transition: border-color 0.15s;
}
.patriot-chatbot-input:focus { outline: none; border-color: var(--pu-navy); }

.patriot-chatbot-send-btn {
    background: var(--pu-navy);
    color: var(--pu-white);
    border: none;
    width: 44px; height: 44px;
    border-radius: var(--pu-radius);
    cursor: pointer;
    display: flex; align-items: center; justify-content: center;
    flex-shrink: 0;
    transition: background 0.15s;
}
.patriot-chatbot-send-btn:hover:not(:disabled) { background: var(--pu-navy-dark); }
.patriot-chatbot-send-btn:disabled { opacity: 0.35; cursor: not-allowed; }
.patriot-chatbot-send-btn:focus { outline: 3px solid var(--pu-navy); outline-offset: 2px; }

.patriot-chatbot-disclaimer {
    font-size: 11px;
    color: var(--pu-gray-400);
    text-align: center;
    padding: 6px 12px;
    background: var(--pu-gray-50);
    border-top: 1px solid var(--pu-gray-100);
    margin: 0;
    flex-shrink: 0;
}

/* ── Responsive ──────────────────────────────────────────────────────────── */
@media (max-width: 600px) {
    .patriot-kb-cards { grid-template-columns: 1fr; }
    .patriot-chatbot--floating { width: calc(100vw - 24px); right: 12px; bottom: calc(12px + 56px + 10px); }
    .patriot-chatbot-launcher  { right: 12px; bottom: 12px; }
}

/* ── Network Graph ───────────────────────────────────────────────────────── */
.patriot-graph-wrap {
    border: 1px solid var(--pu-navy-light, #e0e0e0);
    border-radius: 8px;
    overflow: hidden;
    background: #fff;
}

.patriot-graph-toolbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    padding: 10px 14px;
    background: var(--pu-navy-lightest, #f8f9fa);
    border-bottom: 1px solid #e0e0e0;
    flex-wrap: wrap;
}

.patriot-graph-toolbar-left,
.patriot-graph-toolbar-right {
    display: flex;
    align-items: center;
    gap: 10px;
}

.patriot-graph-search-input {
    padding: 6px 12px;
    border: 1px solid #ccc;
    border-radius: 4px;
    font-size: 13px;
    min-width: 200px;
}

.patriot-graph-toggle {
    display: flex;
    align-items: center;
    gap: 4px;
    font-size: 12px;
    cursor: pointer;
    white-space: nowrap;
}

.patriot-graph-container {
    display: flex;
    position: relative;
}

.patriot-graph-canvas {
    flex: 1;
    min-height: 400px;
}

.patriot-graph-loading {
    text-align: center;
    padding: 40px;
    color: #666;
}

.patriot-graph-detail {
    width: 260px;
    border-left: 1px solid #e0e0e0;
    padding: 14px;
    background: #fafbfc;
    overflow-y: auto;
    max-height: 600px;
}

.patriot-graph-detail-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 10px;
}

.patriot-graph-detail-header strong {
    font-size: 14px;
    line-height: 1.3;
}

.patriot-graph-close-btn {
    background: none;
    border: none;
    font-size: 18px;
    cursor: pointer;
    color: #666;
    line-height: 1;
    padding: 0 4px;
}

.patriot-graph-stats {
    padding: 8px 14px;
    background: var(--pu-navy-lightest, #f8f9fa);
    border-top: 1px solid #e0e0e0;
    font-size: 12px;
    color: #666;
}

.patriot-graph-stats span {
    margin-right: 2px;
}

.patriot-graph-error {
    text-align: center;
    padding: 40px;
}

@media (max-width: 600px) {
    .patriot-graph-toolbar { flex-direction: column; align-items: stretch; }
    .patriot-graph-search-input { min-width: 0; width: 100%; }
    .patriot-graph-detail { width: 100%; border-left: none; border-top: 1px solid #e0e0e0; max-height: 200px; }
    .patriot-graph-container { flex-direction: column; }
}

/* Screen reader only */
.screen-reader-text {
    position: absolute;
    width: 1px; height: 1px;
    padding: 0; margin: -1px;
    overflow: hidden;
    clip: rect(0,0,0,0);
    white-space: nowrap;
    border: 0;
}