/* DON Memory Protocol - Core Node Dashboard Styles */
/* Research Hub overlay for core nodes (S-5-H access) */

/* ============================================
   Fallback Variables
   These provide defaults if styles.css fails to load.
   Values mirror the design tokens in styles.css.
   ============================================ */
:root {
    --color-primary: var(--color-primary, #00d4ff);
    --color-secondary: var(--color-secondary, #7c3aed);
    --color-text: var(--color-text, #ffffff);
    --color-text-muted: var(--color-text-muted, #9ca3af);
    --color-background: var(--color-background, #0a0a0f);
    --color-surface: var(--color-surface, #12121a);
    --color-surface-elevated: var(--color-surface-elevated, #1a1a24);
    --color-border: var(--color-border, #2d2d3a);
    --font-sans: var(--font-sans, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif);
    --font-mono: var(--font-mono, 'JetBrains Mono', Consolas, monospace);
    --text-xs: var(--text-xs, 0.75rem);
    --text-sm: var(--text-sm, 0.875rem);
    --text-lg: var(--text-lg, 1.125rem);
    --text-xl: var(--text-xl, 1.25rem);
    --space-1: var(--space-1, 0.25rem);
    --space-2: var(--space-2, 0.5rem);
    --space-3: var(--space-3, 0.75rem);
    --space-4: var(--space-4, 1rem);
    --space-5: var(--space-5, 1.25rem);
    --space-6: var(--space-6, 1.5rem);
    --radius-md: var(--radius-md, 0.5rem);
    --radius-lg: var(--radius-lg, 0.75rem);
    --radius-full: var(--radius-full, 9999px);
    --transition-fast: var(--transition-fast, 150ms ease);
    --transition-normal: var(--transition-normal, 250ms ease);
}

/* ============================================
   Core Overlay Container
   ============================================ */

.core-overlay {
    position: fixed;
    inset: 0;
    z-index: 2000;
    display: none;
    flex-direction: column;
    background: rgba(10, 10, 15, 0.98);
    backdrop-filter: blur(20px);
    opacity: 0;
    transition: opacity var(--transition-normal);
}

.core-overlay.active {
    display: flex;
    opacity: 1;
}

/* ============================================
   Core Header
   ============================================ */

.core-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-4) var(--space-6);
    border-bottom: 1px solid rgba(0, 212, 255, 0.2);
    background: rgba(0, 212, 255, 0.03);
}

.core-header-left {
    display: flex;
    align-items: center;
    gap: var(--space-4);
}

.core-badge {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-2) var(--space-3);
    background: rgba(0, 212, 255, 0.1);
    border: 1px solid rgba(0, 212, 255, 0.3);
    border-radius: var(--radius-md);
}

.core-badge-icon {
    width: 16px;
    height: 16px;
    color: var(--color-primary);
}

.core-badge-text {
    font-size: var(--text-xs);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--color-primary);
}

.core-title {
    font-size: var(--text-lg);
    font-weight: 700;
    color: var(--color-text);
    letter-spacing: 0.02em;
}

.core-close-btn {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: transparent;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    color: var(--color-text-muted);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.core-close-btn:hover {
    color: var(--color-text);
    border-color: var(--color-primary);
    background: rgba(0, 212, 255, 0.1);
}

.core-close-btn svg {
    width: 20px;
    height: 20px;
}

/* ============================================
   Core Tab Navigation
   ============================================ */

.core-tabs {
    display: flex;
    align-items: center;
    gap: var(--space-1);
    padding: var(--space-3) var(--space-6);
    background: var(--color-surface);
    border-bottom: 1px solid var(--color-border);
}

.core-tab {
    padding: var(--space-3) var(--space-5);
    font-size: var(--text-sm);
    font-weight: 600;
    color: var(--color-text-muted);
    background: transparent;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
    position: relative;
}

.core-tab:hover {
    color: var(--color-text);
    background: var(--color-surface-elevated);
}

.core-tab.active {
    color: var(--color-primary);
    background: rgba(0, 212, 255, 0.1);
}

.core-tab.active::after {
    content: '';
    position: absolute;
    bottom: -13px;
    left: 50%;
    transform: translateX(-50%);
    width: 40%;
    height: 2px;
    background: var(--color-primary);
    border-radius: var(--radius-full);
}

/* ============================================
   Core Content Area
   ============================================ */

.core-content {
    flex: 1;
    display: flex;
    overflow: hidden;
}

.core-panel {
    display: none;
    flex: 1;
    flex-direction: column;
    overflow-y: auto;
    padding: var(--space-6);
}

.core-panel.active {
    display: flex;
}

/* ============================================
   Global Fabric Tab
   ============================================ */

.core-fabric-container {
    display: flex;
    flex: 1;
    gap: var(--space-6);
}

.core-fabric-main {
    flex: 1;
    min-width: 0;
    display: flex;
    flex-direction: column;
}

.core-fabric-canvas {
    flex: 1;
    position: relative;
    min-height: 400px;
    background: var(--color-background);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.core-fabric-canvas canvas {
    width: 100%;
    height: 100%;
    display: block;
}

.core-fabric-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: var(--space-3);
    margin-top: var(--space-4);
}

.core-fabric-stat {
    display: flex;
    flex-direction: column;
    gap: var(--space-1);
    padding: var(--space-4);
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
}

.core-fabric-stat-label {
    font-size: var(--text-xs);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-text-muted);
}

.core-fabric-stat-value {
    font-family: var(--font-mono);
    font-size: var(--text-xl);
    font-weight: 700;
    color: var(--color-primary);
}

/* ============================================
   CNL Monitor Tab
   ============================================ */

.cnl-monitor {
    display: flex;
    flex-direction: column;
    gap: var(--space-6);
    max-width: 900px;
    margin: 0 auto;
    width: 100%;
}

.cnl-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.cnl-header h2 {
    font-size: var(--text-xl);
    font-weight: 700;
    color: var(--color-text);
    margin: 0;
}

.cnl-refresh-btn {
    padding: var(--space-2) var(--space-4);
    font-size: var(--text-sm);
    font-weight: 500;
    color: var(--color-text-muted);
    background: transparent;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.cnl-refresh-btn:hover {
    color: var(--color-primary);
    border-color: var(--color-primary);
}

/* CNL Stats Row */
.cnl-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: var(--space-4);
}

.cnl-stat-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-5);
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
}

.cnl-stat-label {
    font-size: var(--text-xs);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-text-muted);
}

.cnl-stat-value {
    font-family: var(--font-mono);
    font-size: var(--text-2xl);
    font-weight: 700;
    color: var(--color-text);
}

.cnl-stat-value.pass {
    color: var(--color-success, #10b981);
}

.cnl-stat-value.fail {
    color: var(--color-error, #ef4444);
}

/* CNL Activity Feed */
.cnl-feed {
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
}

.cnl-feed-header {
    font-size: var(--text-sm);
    font-weight: 600;
    color: var(--color-text-muted);
    padding-bottom: var(--space-2);
    border-bottom: 1px solid var(--color-border);
}

.cnl-feed-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
    max-height: 400px;
    overflow-y: auto;
}

.cnl-entry {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-3) var(--space-4);
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.cnl-entry:hover {
    border-color: var(--color-primary);
}

.cnl-entry-status {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    flex-shrink: 0;
}

.cnl-entry-status.pass {
    background: var(--color-success, #10b981);
    box-shadow: 0 0 8px rgba(16, 185, 129, 0.5);
}

.cnl-entry-status.fail {
    background: var(--color-error, #ef4444);
    box-shadow: 0 0 8px rgba(239, 68, 68, 0.5);
}

.cnl-entry-content {
    flex: 1;
    min-width: 0;
}

.cnl-entry-source {
    font-size: var(--text-sm);
    font-weight: 600;
    color: var(--color-text);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.cnl-entry-meta {
    display: flex;
    gap: var(--space-3);
    font-size: var(--text-xs);
    color: var(--color-text-muted);
}

.cnl-entry-time {
    font-family: var(--font-mono);
    font-size: var(--text-xs);
    color: var(--color-text-muted);
    flex-shrink: 0;
}

/* ============================================
   Research Memory Tab
   ============================================ */

.research-memory {
    display: flex;
    flex-direction: column;
    gap: var(--space-6);
    max-width: 700px;
    margin: 0 auto;
    width: 100%;
}

.research-memory-header {
    text-align: center;
}

.research-memory-header h2 {
    font-size: var(--text-xl);
    font-weight: 700;
    color: var(--color-text);
    margin: 0 0 var(--space-2) 0;
}

.research-memory-header p {
    font-size: var(--text-sm);
    color: var(--color-text-muted);
    margin: 0;
}

/* Contribute Section */
.research-contribute {
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
    padding: var(--space-6);
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
}

.research-contribute h3 {
    font-size: var(--text-base);
    font-weight: 700;
    color: var(--color-text);
    margin: 0;
}

.research-textarea {
    width: 100%;
    min-height: 120px;
    padding: var(--space-4);
    font-family: inherit;
    font-size: var(--text-sm);
    color: var(--color-text);
    background: var(--color-background);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    resize: vertical;
    transition: border-color var(--transition-fast);
}

.research-textarea:focus {
    outline: none;
    border-color: var(--color-primary);
}

.research-textarea::placeholder {
    color: var(--color-text-muted);
}

.research-contribute-btn {
    align-self: flex-end;
    padding: var(--space-3) var(--space-5);
    font-size: var(--text-sm);
    font-weight: 600;
    color: var(--color-background);
    background: var(--color-primary);
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.research-contribute-btn:hover:not(:disabled) {
    background: var(--color-primary-hover, #00b8d9);
    transform: translateY(-1px);
}

.research-contribute-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.research-contribute-result {
    padding: var(--space-3) var(--space-4);
    background: rgba(16, 185, 129, 0.1);
    border: 1px solid var(--color-success, #10b981);
    border-radius: var(--radius-md);
    color: var(--color-success, #10b981);
    font-size: var(--text-sm);
}

.research-contribute-error {
    padding: var(--space-3) var(--space-4);
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid var(--color-error, #ef4444);
    border-radius: var(--radius-md);
    color: var(--color-error, #ef4444);
    font-size: var(--text-sm);
}

/* Browse Section */
.research-browse {
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
}

.research-browse h3 {
    font-size: var(--text-base);
    font-weight: 700;
    color: var(--color-text);
    margin: 0;
}

.research-memory-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
}

.research-memory-card {
    padding: var(--space-4);
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.research-memory-card:hover {
    border-color: var(--color-primary);
    transform: translateY(-1px);
}

.research-memory-text {
    font-size: var(--text-sm);
    color: var(--color-text);
    line-height: 1.5;
    margin-bottom: var(--space-2);
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.research-memory-meta {
    display: flex;
    gap: var(--space-4);
    font-size: var(--text-xs);
    color: var(--color-text-muted);
}

/* ============================================
   Core Nodes Tab (8 Slots)
   ============================================ */

.core-nodes {
    display: flex;
    flex-direction: column;
    gap: var(--space-6);
    max-width: 900px;
    margin: 0 auto;
    width: 100%;
}

.core-nodes-header {
    text-align: center;
}

.core-nodes-header h2 {
    font-size: var(--text-xl);
    font-weight: 700;
    color: var(--color-text);
    margin: 0 0 var(--space-2) 0;
}

.core-nodes-header p {
    font-size: var(--text-sm);
    color: var(--color-text-muted);
    margin: 0;
}

/* Octagon Visualization */
.core-nodes-octagon {
    display: flex;
    justify-content: center;
    padding: var(--space-8);
}

.octagon-container {
    position: relative;
    width: 300px;
    height: 300px;
}

.octagon-node {
    position: absolute;
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-surface);
    border: 2px solid var(--color-border);
    border-radius: 50%;
    font-family: var(--font-mono);
    font-size: var(--text-sm);
    font-weight: 700;
    color: var(--color-text-muted);
    transition: all var(--transition-fast);
}

.octagon-node.occupied {
    border-color: var(--color-primary);
    color: var(--color-primary);
    box-shadow: 0 0 12px rgba(0, 212, 255, 0.3);
}

.octagon-node.self {
    border-color: var(--color-success, #10b981);
    color: var(--color-success, #10b981);
    box-shadow: 0 0 12px rgba(16, 185, 129, 0.3);
}

/* Position nodes in octagon (calculated for 300x300 container) */
.octagon-node:nth-child(1) { top: 0; left: 50%; transform: translateX(-50%); }
.octagon-node:nth-child(2) { top: 15%; right: 15%; }
.octagon-node:nth-child(3) { top: 50%; right: 0; transform: translateY(-50%); }
.octagon-node:nth-child(4) { bottom: 15%; right: 15%; }
.octagon-node:nth-child(5) { bottom: 0; left: 50%; transform: translateX(-50%); }
.octagon-node:nth-child(6) { bottom: 15%; left: 15%; }
.octagon-node:nth-child(7) { top: 50%; left: 0; transform: translateY(-50%); }
.octagon-node:nth-child(8) { top: 15%; left: 15%; }

.octagon-center {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 80px;
    height: 80px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    background: rgba(0, 212, 255, 0.1);
    border: 2px solid rgba(0, 212, 255, 0.3);
    border-radius: 50%;
}

.octagon-center-label {
    font-size: var(--text-xs);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--color-primary);
}

.octagon-center-count {
    font-family: var(--font-mono);
    font-size: var(--text-xl);
    font-weight: 700;
    color: var(--color-text);
}

/* Core Nodes List */
.core-nodes-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--space-4);
}

.core-node-card {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-4);
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
}

.core-node-card.occupied {
    border-color: rgba(0, 212, 255, 0.3);
}

.core-node-card.self {
    border-color: rgba(16, 185, 129, 0.3);
    background: rgba(16, 185, 129, 0.05);
}

.core-node-slot {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-surface-elevated);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    font-family: var(--font-mono);
    font-size: var(--text-sm);
    font-weight: 700;
    color: var(--color-text-muted);
}

.core-node-card.occupied .core-node-slot {
    background: rgba(0, 212, 255, 0.1);
    border-color: var(--color-primary);
    color: var(--color-primary);
}

.core-node-info {
    flex: 1;
    min-width: 0;
}

.core-node-name {
    font-size: var(--text-sm);
    font-weight: 600;
    color: var(--color-text);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.core-node-status {
    font-size: var(--text-xs);
    color: var(--color-text-muted);
}

/* ============================================
   Messages Tab
   ============================================ */

.core-messages {
    display: flex;
    flex-direction: column;
    gap: var(--space-6);
    max-width: 800px;
    margin: 0 auto;
    width: 100%;
}

.core-messages-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.core-messages-header h2 {
    font-size: var(--text-xl);
    font-weight: 700;
    color: var(--color-text);
    margin: 0;
}

.core-messages-compose-btn {
    padding: var(--space-2) var(--space-4);
    font-size: var(--text-sm);
    font-weight: 600;
    color: var(--color-background);
    background: var(--color-primary);
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.core-messages-compose-btn:hover {
    background: var(--color-primary-hover, #00b8d9);
}

/* Threads List */
.core-threads-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
}

.core-thread-card {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
    padding: var(--space-4);
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.core-thread-card:hover {
    border-color: var(--color-primary);
}

.core-thread-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
}

.core-thread-topic {
    font-size: var(--text-sm);
    font-weight: 600;
    color: var(--color-text);
}

.core-thread-count {
    font-size: var(--text-xs);
    color: var(--color-text-muted);
    padding: var(--space-1) var(--space-2);
    background: var(--color-surface-elevated);
    border-radius: var(--radius-sm);
}

.core-thread-preview {
    font-size: var(--text-sm);
    color: var(--color-text-muted);
    line-height: 1.5;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.core-thread-meta {
    display: flex;
    gap: var(--space-4);
    font-size: var(--text-xs);
    color: var(--color-text-muted);
}

/* Thread View (single thread with messages) */
.core-thread-view {
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
}

.core-thread-view-header {
    display: flex;
    align-items: center;
    gap: var(--space-4);
    padding-bottom: var(--space-4);
    border-bottom: 1px solid var(--color-border);
}

.core-thread-view-header h3 {
    flex: 1;
    font-size: var(--text-lg);
    font-weight: 700;
    color: var(--color-text);
    margin: 0;
}

.core-thread-view-count {
    font-size: var(--text-sm);
    color: var(--color-text-muted);
}

.core-back-btn {
    padding: var(--space-2) var(--space-3);
    font-size: var(--text-sm);
    font-weight: 500;
    color: var(--color-text-muted);
    background: transparent;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.core-back-btn:hover {
    color: var(--color-primary);
    border-color: var(--color-primary);
}

/* Messages List */
.core-messages-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
    max-height: 400px;
    overflow-y: auto;
    padding: var(--space-2);
}

.core-message {
    padding: var(--space-4);
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
}

.core-message-header {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    margin-bottom: var(--space-2);
}

.core-message-author {
    font-size: var(--text-sm);
    font-weight: 600;
    color: var(--color-primary);
}

.core-message-time {
    font-size: var(--text-xs);
    color: var(--color-text-muted);
}

.core-message-coherence {
    font-family: var(--font-mono);
    font-size: var(--text-xs);
    color: var(--color-success, #10b981);
    padding: var(--space-1) var(--space-2);
    background: rgba(16, 185, 129, 0.1);
    border-radius: var(--radius-sm);
}

.core-message-content {
    font-size: var(--text-sm);
    color: var(--color-text);
    line-height: 1.6;
    white-space: pre-wrap;
}

/* Reply Form */
.core-reply-form {
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
    padding-top: var(--space-4);
    border-top: 1px solid var(--color-border);
}

.core-reply-textarea {
    width: 100%;
    min-height: 80px;
    padding: var(--space-3);
    font-family: inherit;
    font-size: var(--text-sm);
    color: var(--color-text);
    background: var(--color-background);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    resize: vertical;
    transition: border-color var(--transition-fast);
}

.core-reply-textarea:focus {
    outline: none;
    border-color: var(--color-primary);
}

.core-reply-textarea::placeholder {
    color: var(--color-text-muted);
}

.core-reply-btn {
    align-self: flex-end;
    padding: var(--space-2) var(--space-4);
    font-size: var(--text-sm);
    font-weight: 600;
    color: var(--color-background);
    background: var(--color-primary);
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.core-reply-btn:hover:not(:disabled) {
    background: var(--color-primary-hover, #00b8d9);
}

.core-reply-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* Empty State */
.core-empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: var(--space-4);
    padding: var(--space-12);
    text-align: center;
}

.core-empty-icon {
    width: 64px;
    height: 64px;
    color: var(--color-text-muted);
    opacity: 0.5;
}

.core-empty-state h3 {
    font-size: var(--text-lg);
    font-weight: 600;
    color: var(--color-text);
    margin: 0;
}

.core-empty-state p {
    font-size: var(--text-sm);
    color: var(--color-text-muted);
    max-width: 300px;
    margin: 0;
}

/* ============================================
   Loading States
   ============================================ */

.core-loading {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: var(--space-4);
    padding: var(--space-12);
}

.core-loading-spinner {
    width: 40px;
    height: 40px;
    border: 3px solid var(--color-border);
    border-top-color: var(--color-primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

.core-loading p {
    font-size: var(--text-base);
    color: var(--color-text-muted);
}

/* ============================================
   Mobile Responsive
   ============================================ */

@media (max-width: 768px) {
    .core-header {
        padding: var(--space-3) var(--space-4);
    }

    .core-title {
        font-size: var(--text-base);
    }

    .core-tabs {
        padding: var(--space-2) var(--space-4);
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
    }

    .core-tab {
        padding: var(--space-2) var(--space-3);
        font-size: var(--text-xs);
        white-space: nowrap;
    }

    .core-panel {
        padding: var(--space-4);
    }

    .octagon-container {
        width: 240px;
        height: 240px;
    }

    .octagon-node {
        width: 36px;
        height: 36px;
        font-size: var(--text-xs);
    }

    .octagon-center {
        width: 60px;
        height: 60px;
    }

    .core-nodes-list {
        grid-template-columns: 1fr;
    }

    .cnl-stats {
        grid-template-columns: repeat(2, 1fr);
    }
}