/*
 * INXA NOTE - Premium Design System (CSS)
 * Dark Mode / Glassmorphism / Zero Friction Animations
 */

:root {
    /* Color Palette */
    --bg-main: #0a0f1d;
    --bg-card: rgba(255, 255, 255, 0.03);
    --bg-card-hover: rgba(255, 255, 255, 0.06);
    --border-color: rgba(255, 255, 255, 0.08);
    --border-color-focus: rgba(0, 242, 254, 0.4);
    
    --text-primary: #ffffff;
    --text-secondary: rgba(255, 255, 255, 0.7);
    --text-muted: rgba(255, 255, 255, 0.4);
    
    --accent-cyan: #00f2fe;
    --accent-blue: #4facfe;
    --accent-violet: #a855f7;
    --accent-mint: #00f5a0;
    --accent-danger: #ef4444;
    --accent-warning: #f59e0b;
    
    /* Gradients */
    --gradient-primary: linear-gradient(135deg, var(--accent-cyan) 0%, var(--accent-blue) 100%);
    --gradient-violet: linear-gradient(135deg, #c084fc 0%, var(--accent-violet) 100%);
    --gradient-mint: linear-gradient(135deg, var(--accent-mint) 0%, #10b981) 100%;
    --gradient-dark: linear-gradient(180deg, #151c33 0%, var(--bg-main) 100%);
    
    /* Layout & FX */
    --shadow-premium: 0 20px 40px rgba(0, 0, 0, 0.4);
    --shadow-glow: 0 0 15px rgba(0, 242, 254, 0.2);
    --blur-intensity: blur(16px);
    --transition-fast: 0.15s cubic-bezier(0.16, 1, 0.3, 1);
    --transition-normal: 0.25s cubic-bezier(0.16, 1, 0.3, 1);
}

/* Base Styles */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--bg-main);
    background-image: radial-gradient(circle at 10% 20%, rgba(79, 172, 254, 0.05) 0%, transparent 40%),
                      radial-gradient(circle at 90% 80%, rgba(168, 85, 247, 0.05) 0%, transparent 40%);
    color: var(--text-primary);
    min-height: 100vh;
    overflow-x: hidden;
    line-height: 1.5;
}

h1, h2, h3, h4, .font-heading {
    font-family: 'Outfit', sans-serif;
    font-weight: 600;
}

/* Layout Containers */
.app-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 24px;
    display: flex;
    flex-direction: column;
    gap: 24px;
}

/* Floating Simulator Bar (XCircle Simulator) */
.simulator-bar {
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 12px 24px;
    backdrop-filter: var(--blur-intensity);
    -webkit-backdrop-filter: var(--blur-intensity);
    display: flex;
    align-items: center;
    justify-content: space-between;
    box-shadow: var(--shadow-premium);
    z-index: 10;
}

.simulator-title {
    font-size: 0.85rem;
    color: var(--text-muted);
    font-weight: 600;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    display: flex;
    align-items: center;
    gap: 8px;
}

.simulator-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background-color: var(--accent-mint);
    box-shadow: 0 0 8px var(--accent-mint);
}

.simulator-input-wrap {
    flex-grow: 1;
    max-width: 600px;
    margin: 0 24px;
    position: relative;
}

.simulator-input {
    width: 100%;
    background: rgba(0, 0, 0, 0.2);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 10px 16px;
    color: var(--text-primary);
    font-size: 0.9rem;
    transition: var(--transition-fast);
}

.simulator-input:focus {
    outline: none;
    border-color: var(--accent-cyan);
    box-shadow: var(--shadow-glow);
}

.xcircle-trigger-btn {
    background: var(--gradient-primary);
    color: #070b19;
    border: none;
    border-radius: 12px;
    padding: 10px 20px;
    font-family: 'Outfit', sans-serif;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 8px;
    transition: all 0.2s ease;
}

.xcircle-trigger-btn:hover {
    transform: scale(1.03);
    box-shadow: 0 0 15px rgba(0, 242, 254, 0.4);
}

/* Glassmorphism Cards */
.glass-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    backdrop-filter: var(--blur-intensity);
    -webkit-backdrop-filter: var(--blur-intensity);
    box-shadow: var(--shadow-premium);
    transition: var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.glass-card:hover {
    border-color: rgba(255, 255, 255, 0.15);
    background: var(--bg-card-hover);
}

/* Modals System (Capture & Overlays) */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(5, 7, 15, 0.85);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    z-index: 100;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.15s ease-out;
}

.modal-overlay.active {
    opacity: 1;
    pointer-events: all;
}

.modal-content {
    background: rgba(13, 20, 38, 0.95);
    border: 1px solid var(--border-color);
    border-radius: 24px;
    width: 90%;
    max-width: 650px;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: 0 25px 60px rgba(0, 0, 0, 0.6);
    transform: scale(0.95) translateY(10px);
    transition: transform 0.18s cubic-bezier(0.34, 1.56, 0.64, 1);
    position: relative;
}

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

.modal-header {
    padding: 24px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.modal-title {
    font-size: 1.25rem;
    font-family: 'Outfit', sans-serif;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 8px;
}

.modal-close {
    background: none;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    font-size: 1.5rem;
    transition: var(--transition-fast);
}

.modal-close:hover {
    color: var(--text-primary);
}

.modal-body {
    padding: 24px;
}

/* Capture Modal Specifics */
.capture-source-bar {
    background: rgba(0, 0, 0, 0.25);
    border-radius: 12px;
    padding: 12px;
    margin-bottom: 20px;
    border: 1px solid var(--border-color);
}

.capture-source-title {
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: 4px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.capture-source-url {
    font-size: 0.8rem;
    color: var(--accent-cyan);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.capture-textarea {
    width: 100%;
    height: 120px;
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 16px;
    color: var(--text-primary);
    font-family: inherit;
    font-size: 1rem;
    resize: none;
    transition: var(--transition-fast);
    margin-bottom: 16px;
}

.capture-textarea:focus {
    outline: none;
    border-color: var(--accent-cyan);
    box-shadow: var(--shadow-glow);
    background: rgba(255, 255, 255, 0.04);
}

/* AI Suggester inside Modal */
.ai-suggest-bar {
    background: rgba(0, 242, 254, 0.03);
    border: 1px dashed rgba(0, 242, 254, 0.3);
    border-radius: 12px;
    padding: 0 16px;
    margin-bottom: 0;
    max-height: 0;
    overflow: hidden;
    opacity: 0;
    pointer-events: none;
    display: flex;
    flex-direction: column;
    align-items: stretch;
    font-size: 0.85rem;
    color: var(--text-secondary);
    transform: translateY(10px);
    transition: opacity 0.3s ease, transform 0.3s ease, max-height 0.3s ease, padding 0.3s ease, margin-bottom 0.3s ease;
}

.ai-suggest-bar.visible {
    padding: 12px 16px;
    margin-bottom: 20px;
    max-height: 500px;
    opacity: 1;
    pointer-events: all;
    transform: translateY(0);
}

.ai-suggest-bar span {
    display: flex;
    align-items: center;
    gap: 8px;
}

.ai-suggest-btn {
    background: rgba(0, 242, 254, 0.1);
    color: var(--accent-cyan);
    border: 1px solid rgba(0, 242, 254, 0.2);
    padding: 4px 10px;
    border-radius: 8px;
    cursor: pointer;
    font-size: 0.8rem;
    font-weight: 500;
    transition: var(--transition-fast);
}

.ai-suggest-btn:hover {
    background: rgba(0, 242, 254, 0.2);
    border-color: rgba(0, 242, 254, 0.4);
}

.tag-editor-wrap {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 20px;
}

.tag-badge {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-color);
    padding: 4px 10px;
    border-radius: 20px;
    font-size: 0.8rem;
    display: flex;
    align-items: center;
    gap: 6px;
    color: var(--text-secondary);
}

.tag-badge button {
    background: none;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    font-size: 0.8rem;
}

.tag-badge button:hover {
    color: var(--accent-danger);
}

.tag-input-field {
    background: none;
    border: none;
    color: var(--text-primary);
    font-size: 0.8rem;
    outline: none;
    padding: 4px;
    min-width: 80px;
}

.project-select-wrap {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 24px;
}

.project-select {
    background: rgba(0, 0, 0, 0.3);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    padding: 8px 12px;
    border-radius: 8px;
    font-size: 0.85rem;
    outline: none;
}

/* Save & Transformation Menu */
.modal-footer-actions {
    display: flex;
    justify-content: flex-end;
    gap: 12px;
    border-top: 1px solid var(--border-color);
    padding-top: 20px;
}

.btn-save-note {
    background: var(--gradient-primary);
    color: #070b19;
    border: none;
    border-radius: 12px;
    padding: 12px 24px;
    font-family: 'Outfit', sans-serif;
    font-weight: 600;
    font-size: 0.95rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 8px;
    box-shadow: 0 4px 15px rgba(0, 242, 254, 0.2);
    transition: var(--transition-fast);
}

.btn-save-note:hover {
    transform: translateY(-1px);
    box-shadow: 0 6px 20px rgba(0, 242, 254, 0.35);
}

.btn-cancel {
    background: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    border-radius: 12px;
    padding: 12px 24px;
    cursor: pointer;
    font-weight: 500;
    transition: var(--transition-fast);
}

.btn-cancel:hover {
    background: rgba(255, 255, 255, 0.05);
    color: var(--text-primary);
}

/* Post-Save Transformation Menu overlay */
.transform-overlay {
    display: none;
    background: rgba(7, 11, 25, 0.9);
    border-radius: 24px;
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 10;
    padding: 24px;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    backdrop-filter: blur(10px);
}

.transform-overlay.active {
    display: flex;
}

.transform-title {
    font-size: 1.4rem;
    margin-bottom: 6px;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.transform-subtitle {
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-bottom: 24px;
    text-align: center;
}

.transform-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
    width: 100%;
    max-width: 480px;
    margin-bottom: 20px;
}

.transform-card {
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid var(--border-color);
    border-radius: 14px;
    padding: 16px;
    cursor: pointer;
    display: flex;
    flex-direction: column;
    gap: 8px;
    transition: var(--transition-normal);
    text-align: left;
}

.transform-card:hover {
    background: rgba(0, 242, 254, 0.05);
    border-color: var(--accent-cyan);
    transform: translateY(-2px);
}

.transform-card-icon {
    font-size: 1.25rem;
}

.transform-card-title {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-primary);
}

.transform-card-desc {
    font-size: 0.75rem;
    color: var(--text-muted);
    line-height: 1.3;
}

.transform-finish-btn {
    background: transparent;
    border: 1px dashed var(--border-color);
    color: var(--text-secondary);
    border-radius: 10px;
    padding: 8px 16px;
    cursor: pointer;
    font-size: 0.85rem;
    transition: var(--transition-fast);
}

.transform-finish-btn:hover {
    border-color: var(--text-primary);
    color: var(--text-primary);
}

/* main Layout Split: Left (Vault) / Right (Graph & Intel) */
.main-layout {
    display: grid;
    grid-template-columns: 1fr 400px;
    gap: 24px;
}

@media (max-width: 1024px) {
    .main-layout {
        grid-template-columns: 1fr;
    }
}

/* Vault Area Header */
.vault-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 20px;
}

.vault-title {
    font-size: 1.5rem;
    font-family: 'Outfit', sans-serif;
    display: flex;
    align-items: center;
    gap: 10px;
}

.vault-search-controls {
    display: flex;
    gap: 12px;
    width: 100%;
    margin-bottom: 20px;
}

.vault-search-input-wrap {
    flex-grow: 1;
    position: relative;
}

.vault-search-input {
    width: 100%;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 12px 16px 12px 40px;
    color: var(--text-primary);
    font-size: 0.95rem;
    transition: var(--transition-fast);
}

.vault-search-input:focus {
    outline: none;
    border-color: var(--accent-cyan);
    box-shadow: var(--shadow-glow);
}

.search-icon-svg {
    position: absolute;
    left: 14px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
    pointer-events: none;
}

.view-toggle-btn {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    padding: 12px;
    border-radius: 12px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition-fast);
}

.view-toggle-btn:hover {
    background: var(--bg-card-hover);
    color: var(--text-primary);
}

/* Project Filter Chips */
.filter-chips-wrap {
    display: flex;
    gap: 8px;
    overflow-x: auto;
    padding-bottom: 12px;
    margin-bottom: 16px;
}

.filter-chip {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border-color);
    padding: 6px 16px;
    border-radius: 20px;
    font-size: 0.85rem;
    color: var(--text-secondary);
    cursor: pointer;
    white-space: nowrap;
    transition: var(--transition-fast);
}

.filter-chip:hover {
    border-color: rgba(255, 255, 255, 0.2);
}

.filter-chip.active {
    background: var(--gradient-primary);
    color: #070b19;
    border-color: transparent;
    font-weight: 600;
}

/* Vault Grid and Lists */
.notes-container {
    display: grid;
    gap: 16px;
    transition: all 0.3s ease;
}

.notes-container.grid-view {
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
}

.notes-container.list-view {
    grid-template-columns: 1fr;
}

/* Note Item UI */
.note-item {
    padding: 20px;
    cursor: pointer;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    height: 100%;
    position: relative;
}

.note-item-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 12px;
    margin-bottom: 12px;
}

.note-item-title {
    font-size: 1.05rem;
    font-weight: 600;
    line-height: 1.35;
    color: var(--text-primary);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.note-item-domain {
    font-size: 0.75rem;
    color: var(--accent-cyan);
    margin-bottom: 10px;
}

.note-item-text {
    font-size: 0.88rem;
    color: var(--text-secondary);
    line-height: 1.5;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
    margin-bottom: 16px;
}

.note-item-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    border-top: 1px solid rgba(255, 255, 255, 0.04);
    padding-top: 12px;
    margin-top: auto;
}

.note-item-tags {
    display: flex;
    gap: 6px;
    flex-wrap: wrap;
    max-width: 70%;
}

.note-item-tag {
    font-size: 0.7rem;
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid var(--border-color);
    padding: 2px 8px;
    border-radius: 10px;
    color: var(--text-muted);
}

.note-item-actions {
    display: flex;
    gap: 8px;
    color: var(--text-muted);
}

.status-indicator-icon {
    width: 16px;
    height: 16px;
    opacity: 0.6;
}

.status-indicator-icon.active {
    opacity: 1;
    color: var(--accent-mint);
}

/* Offline Sync Status Badge */
.sync-status-badge {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 0.75rem;
    padding: 4px 10px;
    border-radius: 12px;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
}

.sync-status-badge.synced .sync-dot {
    background: var(--accent-mint);
    box-shadow: 0 0 6px var(--accent-mint);
}

.sync-status-badge.offline .sync-dot {
    background: var(--accent-warning);
    box-shadow: 0 0 6px var(--accent-warning);
}

.sync-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    transition: all 0.3s ease;
}

/* Sidebar components (Knowledge Graph & Intelligence) */
.sidebar-panel {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.sidebar-title {
    font-size: 1.15rem;
    margin-bottom: 12px;
    display: flex;
    align-items: center;
    gap: 8px;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 8px;
}

/* Knowledge Graph Container */
.graph-container {
    height: 320px;
    position: relative;
    border-radius: 16px;
    background: rgba(0, 0, 0, 0.2);
    overflow: hidden;
}

#knowledgeGraphCanvas {
    width: 100%;
    height: 100%;
    display: block;
    cursor: grab;
}

#knowledgeGraphCanvas:active {
    cursor: grabbing;
}

.graph-instruction {
    position: absolute;
    bottom: 10px;
    left: 50%;
    transform: translateX(-50%);
    background: rgba(0, 0, 0, 0.6);
    padding: 4px 10px;
    border-radius: 10px;
    font-size: 0.7rem;
    color: var(--text-muted);
    pointer-events: none;
    white-space: nowrap;
}

/* Intelligence Panel (Cluster recommendations, Orphans) */
.intel-card {
    border-left: 3px solid var(--accent-violet);
    padding: 16px;
    margin-bottom: 12px;
    background: rgba(168, 85, 247, 0.02);
}

.intel-card.warning {
    border-left-color: var(--accent-warning);
    background: rgba(245, 158, 11, 0.02);
}

.intel-header {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--accent-violet);
    margin-bottom: 6px;
    text-transform: uppercase;
}

.intel-card.warning .intel-header {
    color: var(--accent-warning);
}

.intel-body {
    font-size: 0.82rem;
    color: var(--text-secondary);
    line-height: 1.4;
    margin-bottom: 10px;
}

.intel-action-btn {
    background: transparent;
    border: 1px solid rgba(255, 255, 255, 0.1);
    color: var(--text-primary);
    padding: 4px 10px;
    border-radius: 6px;
    font-size: 0.75rem;
    cursor: pointer;
    font-weight: 500;
    transition: var(--transition-fast);
}

.intel-action-btn:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.2);
}

/* Integration Modals (Task, QR, Share, Chat) */
.form-group {
    margin-bottom: 16px;
}

.form-label {
    display: block;
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-bottom: 6px;
    font-weight: 500;
}

.form-control {
    width: 100%;
    background: rgba(0, 0, 0, 0.25);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    padding: 10px 14px;
    color: var(--text-primary);
    font-size: 0.9rem;
    outline: none;
    transition: var(--transition-fast);
}

.form-control:focus {
    border-color: var(--accent-cyan);
    box-shadow: var(--shadow-glow);
}

.qr-display-box {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 16px;
    padding: 24px;
    background: rgba(0, 0, 0, 0.2);
    border-radius: 16px;
    margin-bottom: 16px;
}

.qr-code-canvas-container {
    background: white;
    padding: 12px;
    border-radius: 12px;
    display: flex;
    justify-content: center;
    align-items: center;
}

.qr-link-copy {
    font-family: monospace;
    font-size: 0.8rem;
    background: rgba(255, 255, 255, 0.05);
    padding: 6px 12px;
    border-radius: 8px;
    border: 1px solid var(--border-color);
    width: 100%;
    text-align: center;
    word-break: break-all;
}

/* Chat/Deep Dive Component */
.chat-container {
    display: flex;
    flex-direction: column;
    height: 350px;
    background: rgba(0, 0, 0, 0.2);
    border-radius: 16px;
    border: 1px solid var(--border-color);
    overflow: hidden;
    margin-bottom: 16px;
}

.chat-history {
    flex-grow: 1;
    overflow-y: auto;
    padding: 16px;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.chat-bubble {
    max-width: 80%;
    padding: 10px 14px;
    border-radius: 14px;
    font-size: 0.88rem;
    line-height: 1.4;
}

.chat-bubble.user {
    background: rgba(255, 255, 255, 0.08);
    color: var(--text-primary);
    align-self: flex-end;
    border-bottom-right-radius: 4px;
}

.chat-bubble.ai {
    background: rgba(0, 242, 254, 0.06);
    border: 1px solid rgba(0, 242, 254, 0.15);
    color: var(--text-primary);
    align-self: flex-start;
    border-bottom-left-radius: 4px;
}

.chat-input-area {
    display: flex;
    border-top: 1px solid var(--border-color);
    background: rgba(13, 20, 38, 0.5);
    padding: 10px;
    gap: 8px;
}

.chat-input {
    flex-grow: 1;
    background: rgba(0, 0, 0, 0.2);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 8px 12px;
    color: var(--text-primary);
    font-size: 0.85rem;
    outline: none;
}

.chat-send-btn {
    background: var(--gradient-primary);
    border: none;
    color: #070b19;
    border-radius: 8px;
    padding: 8px 16px;
    font-weight: 600;
    cursor: pointer;
    font-size: 0.85rem;
}

/* Empty State */
.empty-state {
    text-align: center;
    padding: 48px 24px;
    color: var(--text-muted);
}

.empty-state-icon {
    font-size: 2.5rem;
    margin-bottom: 12px;
}

.empty-state-title {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 6px;
}

.empty-state-desc {
    font-size: 0.85rem;
    max-width: 300px;
    margin: 0 auto;
}

/* Detail view Sidebar (for editing / detailed AI views) */
.detail-sidebar {
    position: fixed;
    top: 0;
    right: -450px;
    width: 450px;
    height: 100%;
    background: rgba(10, 15, 29, 0.98);
    border-left: 1px solid var(--border-color);
    backdrop-filter: var(--blur-intensity);
    -webkit-backdrop-filter: var(--blur-intensity);
    box-shadow: -10px 0 30px rgba(0,0,0,0.5);
    z-index: 90;
    transition: right 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    display: flex;
    flex-direction: column;
}

.detail-sidebar.active {
    right: 0;
}

.detail-header {
    padding: 24px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.detail-body {
    flex-grow: 1;
    overflow-y: auto;
    padding: 24px;
}

.detail-footer {
    padding: 24px;
    border-top: 1px solid var(--border-color);
    display: flex;
    gap: 12px;
}

.detail-ai-block {
    background: rgba(0, 242, 254, 0.02);
    border: 1px dashed rgba(0, 242, 254, 0.2);
    border-radius: 12px;
    padding: 16px;
    margin-top: 20px;
}

.detail-ai-title {
    font-size: 0.8rem;
    color: var(--accent-cyan);
    text-transform: uppercase;
    font-weight: 600;
    margin-bottom: 8px;
    display: flex;
    align-items: center;
    gap: 6px;
}

.detail-ai-summary {
    font-size: 0.85rem;
    color: var(--text-secondary);
    line-height: 1.4;
    margin-bottom: 12px;
}

.related-notes-list {
    margin-top: 16px;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.related-note-link {
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--border-color);
    padding: 10px;
    border-radius: 8px;
    cursor: pointer;
    font-size: 0.8rem;
    color: var(--text-primary);
    transition: var(--transition-fast);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.related-note-link:hover {
    background: rgba(255, 255, 255, 0.06);
    border-color: var(--accent-cyan);
}

/* Loading animations */
.skeleton-loader {
    background: linear-gradient(90deg, rgba(255,255,255,0.03) 25%, rgba(255,255,255,0.08) 50%, rgba(255,255,255,0.03) 75%);
    background-size: 200% 100%;
    animation: loading-skeleton 1.5s infinite;
    border-radius: 4px;
}

@keyframes loading-skeleton {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

.loading-spinner {
    width: 20px;
    height: 20px;
    border: 2px solid rgba(255, 255, 255, 0.1);
    border-top: 2px solid var(--accent-cyan);
    border-radius: 50%;
    animation: spin-anim 0.8s linear infinite;
}

@keyframes spin-anim {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Hotkey Indicator helper */
.hotkey-indicator {
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: 4px;
    padding: 2px 6px;
    font-size: 0.75rem;
    font-family: monospace;
    color: var(--text-muted);
}

/* Auth Modal Specifics */
.auth-modal-content {
    max-width: 450px;
}

.auth-box-options {
    background: rgba(0, 0, 0, 0.2);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 16px;
}

.auth-error-msg {
    animation: shake-error 0.3s ease;
}

@keyframes shake-error {
    0%, 100% { transform: translateX(0); }
    20%, 60% { transform: translateX(-6px); }
    40%, 80% { transform: translateX(6px); }
}

/* ======================================================= */
/* MOBILE RESPONSIVENESS OVERRIDES                         */
/* ======================================================= */

@media (max-width: 768px) {
    .app-container {
        padding: 16px;
        gap: 16px;
    }

    .simulator-bar {
        flex-direction: column;
        align-items: stretch;
        gap: 12px;
        padding: 12px 16px;
    }

    .simulator-title {
        justify-content: center;
    }

    .simulator-input-wrap {
        margin: 0;
        max-width: 100%;
    }

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

    .filter-chips-wrap {
        flex-wrap: wrap;
        padding-bottom: 0;
        margin-bottom: 12px;
    }
}

@media (max-width: 480px) {
    .app-container {
        padding: 12px;
        gap: 12px;
    }

    .simulator-input-wrap > div {
        flex-direction: column;
        gap: 8px !important;
    }

    .detail-sidebar {
        width: 100%;
        right: -100%;
    }

    .detail-header, .detail-body, .detail-footer {
        padding: 16px;
    }

    .modal-content {
        width: 95%;
        border-radius: 16px;
    }

    .modal-header, .modal-body, .modal-footer-actions {
        padding: 16px;
    }

    .tag-editor-wrap {
        margin-bottom: 12px;
    }
}

@media (max-width: 400px) {
    .transform-grid {
        grid-template-columns: 1fr;
    }
}