/**
 * Nohmi Personal AI Assistant - Optimized Styles
 * 
 * This optimized stylesheet reduces redundancy with Bootstrap 5.3.0 utilities
 * while maintaining essential custom components and animations.
 * 
 * Table of Contents:
 * 1. CSS Variables (Design Tokens)
 * 2. Base Styles & Layout
 * 3. Custom Components
 * 4. Skeleton Loaders
 * 5. Animations
 * 6. Dark Mode & Responsive
 */

/* =========================================================
   1. CSS VARIABLES (DESIGN TOKENS)
   ========================================================= */

:root {
    /* Color Gradients */
    --primary-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --secondary-gradient: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    --accent-gradient: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
    --success-gradient: linear-gradient(135deg, #81FBB8 0%, #28C76F 100%);
    --warning-gradient: linear-gradient(135deg, #FFD93D 0%, #FF8C32 100%);
    --danger-gradient: linear-gradient(135deg, #FF8A80 0%, #EA5455 100%);
    
    /* Typography Colors */
    --text-primary: #2d3748;
    --text-secondary: #4a5568;
    --text-muted: #718096;
    --text-light: #a0aec0;
    
    /* Background Colors */
    --bg-white: #ffffff;
    --bg-light: #f7fafc;
    --bg-card: rgba(255, 255, 255, 0.95);
    --bg-overlay: rgba(255, 255, 255, 0.1);
    
    /* Border Colors */
    --border-light: #e2e8f0;
    --border-medium: #cbd5e0;
    
    /* Shadow Styles */
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.12), 0 1px 2px rgba(0, 0, 0, 0.24);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.07), 0 2px 4px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1), 0 4px 6px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px rgba(0, 0, 0, 0.1), 0 10px 10px rgba(0, 0, 0, 0.04);
    --shadow-glow: 0 0 20px rgba(102, 126, 234, 0.3);
    
    /* Border Radius */
    --radius-sm: 6px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --radius-2xl: 20px;
    
    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
}

/* Dark Mode Theme Variables */
.dark-mode {
    --primary-gradient: linear-gradient(135deg, #6366f1 0%, #7c3aed 100%);
    --text-primary: #f7fafc;
    --text-secondary: #e2e8f0;
    --text-muted: #a0aec0;
    --text-light: #718096;
    
    --bg-white: #1a202c;
    --bg-light: #2d3748;
    --bg-card: rgba(26, 32, 44, 0.95);
    --bg-overlay: rgba(0, 0, 0, 0.3);
    
    --border-light: #4a5568;
    --border-medium: #2d3748;
    
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.3), 0 1px 2px rgba(0, 0, 0, 0.4);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.25), 0 2px 4px rgba(0, 0, 0, 0.15);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.25), 0 4px 6px rgba(0, 0, 0, 0.15);
    --shadow-xl: 0 20px 25px rgba(0, 0, 0, 0.2), 0 10px 10px rgba(0, 0, 0, 0.1);
    --shadow-glow: 0 0 20px rgba(99, 102, 241, 0.3);
}

.dark-mode body {
    background: linear-gradient(135deg, #1a202c 0%, #2d3748 100%);
}

/* =========================================================
   2. BASE STYLES
   ========================================================= */

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell', sans-serif;
    background: var(--primary-gradient);
    min-height: 100vh;
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        radial-gradient(circle at 20% 80%, rgba(255, 255, 255, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 20%, rgba(255, 255, 255, 0.08) 0%, transparent 50%);
    pointer-events: none;
    z-index: -1;
}

/* =========================================================
   3. LAYOUT COMPONENTS
   ========================================================= */

/* Container */
.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 2rem;
    animation: fadeIn 0.8s ease-out;
}

/* Header Section */
.header {
    text-align: center;
    margin-bottom: 3rem;
    color: white;
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.header::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 200px;
    height: 200px;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.1) 0%, transparent 70%);
    border-radius: 50%;
    z-index: -1;
    animation: pulse 4s ease-in-out infinite;
}

.header-title {
    font-size: clamp(2.5rem, 5vw, 4rem);
    margin-bottom: 0.5rem;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.3);
    font-weight: 700;
    letter-spacing: -0.02em;
    background: linear-gradient(45deg, #ffffff, #f0f9ff);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.header-subtitle {
    font-size: 1.25rem;
    opacity: 0.95;
    font-weight: 400;
    margin-bottom: 1rem;
}

.header-tagline {
    font-size: 0.95rem;
    opacity: 0.8;
    font-style: italic;
}

.header-actions {
    position: absolute;
    top: 1rem;
    right: 1rem;
    display: flex;
    gap: 0.75rem;
}

/* Grid system - Using Bootstrap Grid */

/* =========================================================
   4. UI COMPONENTS
   ========================================================= */

/* Cards - Enhanced Bootstrap Cards */
.card {
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background: var(--primary-gradient);
    opacity: 0;
    transition: opacity var(--transition-normal);
}

.card:hover::before {
    opacity: 1;
}

.card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
}

.card-title {
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.card-title .icon {
    width: 24px;
    height: 24px;
    fill: currentColor;
    flex-shrink: 0;
}

/* Stat Card */
.stat-card {
    background: var(--bg-card);
    padding: 2rem;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    text-align: center;
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.stat-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.6s;
}

.stat-card:hover::before {
    left: 100%;
}

.stat-card:hover {
    transform: translateY(-8px) scale(1.02);
    box-shadow: var(--shadow-xl), var(--shadow-glow);
}

.stat-card.clickable {
    cursor: pointer;
}

.stat-card.clickable::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: var(--primary-gradient);
    transform: scaleX(0);
    transition: transform var(--transition-normal);
    transform-origin: left;
}

.stat-card.clickable:hover::after {
    transform: scaleX(1);
}

.stat-action {
    font-size: 0.85rem;
    color: transparent;
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    background-clip: text;
    font-weight: 600;
    margin-top: 0.75rem;
    opacity: 0;
    transform: translateY(10px);
    transition: all var(--transition-normal);
    display: inline-block;
    padding: 0.25rem 0.75rem;
    border-radius: var(--radius-md);
    border: 1px solid rgba(102, 126, 234, 0.1);
    position: relative;
    overflow: hidden;
}

.stat-card.clickable:hover .stat-action {
    opacity: 1;
    transform: translateY(0);
}

.stat-action::after {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.4), transparent);
    animation: shimmer 2s infinite;
}

@keyframes shimmer {
    0% { left: -100%; }
    100% { left: 100%; }
}

.stat-number {
    font-size: 3rem;
    font-weight: 800;
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 0.5rem;
    line-height: 1;
    transition: all var(--transition-normal);
}

.stat-card:hover .stat-number {
    transform: scale(1.1);
}

.stat-label {
    font-size: 1rem;
    color: var(--text-secondary);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* Memory Input Form - Bootstrap form-control used */
.memory-input {
    display: flex;
    gap: 0.75rem;
    margin-bottom: 1.5rem;
    flex-wrap: wrap;
}

.memory-input input[type="date"] {
    min-width: 160px;
    flex: 0 0 auto;
}

/* Search Section */
.search-section {
    margin-bottom: 2rem;
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.05), rgba(118, 75, 162, 0.05));
    border-radius: var(--radius-lg);
    border: 1px solid rgba(102, 126, 234, 0.1);
    backdrop-filter: blur(10px);
    overflow: hidden;
    transition: all var(--transition-normal);
}

.search-section-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem 1.5rem;
    cursor: pointer;
    transition: background-color var(--transition-normal);
    position: relative;
}

.search-section-header:hover {
    background: rgba(102, 126, 234, 0.02);
}

.search-section-header::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 1px;
    background: var(--border-light);
    transition: opacity var(--transition-normal);
}

.search-section.collapsed .search-section-header::after {
    opacity: 0;
}

.search-section-title {
    margin: 0;
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-size: 1.2rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.search-toggle-btn {
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
    border-radius: var(--radius-md);
    transition: all var(--transition-normal);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    position: relative;
}

.search-toggle-btn:hover {
    background: rgba(102, 126, 234, 0.1);
    color: var(--text-primary);
}

.search-toggle-btn.has-active-search::before {
    content: '';
    position: absolute;
    top: 0.25rem;
    right: 0.25rem;
    width: 6px;
    height: 6px;
    background: var(--primary-gradient);
    border-radius: 50%;
    box-shadow: 0 0 8px rgba(102, 126, 234, 0.4);
}

.chevron-icon {
    width: 20px;
    height: 20px;
    fill: currentColor;
    transition: transform var(--transition-normal);
}

.search-section.collapsed .chevron-icon {
    transform: rotate(-90deg);
}

.search-content {
    padding: 0 1.5rem 1.5rem;
    max-height: 1000px;
    overflow: hidden;
    transition: max-height var(--transition-slow), padding var(--transition-normal);
}

.search-section.collapsed .search-content {
    max-height: 0;
    padding: 0 1.5rem;
}

/* Search controls - Using Bootstrap form-control */
.search-buttons {
    display: flex;
    gap: 0.75rem;
    margin-top: 0.5rem;
}

/* Custom Button Enhancements - Build on Bootstrap */
.btn {
    box-shadow: var(--shadow-md);
    transition: all var(--transition-normal);
}

.btn:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow-lg);
}

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

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

.btn-primary:hover,
.btn-primary:focus {
    background: var(--primary-gradient);
    border-color: var(--primary-color);
    box-shadow: var(--shadow-lg), 0 5px 15px rgba(102, 126, 234, 0.4);
}

.btn-generate-briefing {
    margin-top: 1.25rem;
}

.btn-theme {
    background: rgba(255, 255, 255, 0.2);
    border: none;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    backdrop-filter: blur(10px);
    transition: all var(--transition-normal);
    box-shadow: var(--shadow-md);
    color: white;
}

.btn-theme:hover {
    background: rgba(255, 255, 255, 0.3);
    transform: scale(1.1);
}

.theme-icon {
    width: 24px;
    height: 24px;
    fill: currentColor;
}

.moon-icon {
    display: block;
}

.sun-icon {
    display: none;
}

.dark-mode .moon-icon {
    display: none;
}

.dark-mode .sun-icon {
    display: block;
}

/* Memories Section Header */
.memories-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
    padding-bottom: 1rem;
    border-bottom: 2px solid var(--border-light);
}

.memories-title {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    color: var(--text-primary);
}

.memories-title h2 {
    margin: 0;
    font-size: 1.75rem;
    font-weight: 700;
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.memories-title .icon {
    width: 24px;
    height: 24px;
    fill: var(--primary-color);
}

.memories-actions {
    display: flex;
    gap: 0.75rem;
    align-items: center;
}

.btn-add-memory {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.25rem;
    background: var(--primary-gradient);
    color: white;
    border: none;
    border-radius: var(--radius-lg);
    font-weight: 600;
    transition: all var(--transition-normal);
    box-shadow: var(--shadow-md);
    position: relative;
    overflow: hidden;
}

.btn-add-memory::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.5s;
}

.btn-add-memory:hover::before {
    left: 100%;
}

.btn-add-memory:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-add-memory .icon-add {
    width: 18px;
    height: 18px;
    fill: currentColor;
}

.btn-search-toggle {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1rem;
    background: var(--bg-white);
    color: var(--text-secondary);
    border: 2px solid var(--border-light);
    border-radius: var(--radius-lg);
    font-weight: 600;
    transition: all var(--transition-normal);
    position: relative;
}

.btn-search-toggle:hover {
    background: var(--bg-secondary);
    border-color: var(--primary-color);
    color: var(--primary-color);
    transform: translateY(-1px);
}

.btn-search-toggle.has-active-search {
    background: rgba(102, 126, 234, 0.1);
    border-color: var(--primary-color);
    color: var(--primary-color);
}

.btn-search-toggle .icon-search {
    width: 16px;
    height: 16px;
    fill: currentColor;
}

/* Profile UI using Bootstrap Offcanvas */
#profile-toggle-btn {
    box-shadow: var(--shadow-md);
    transition: all var(--transition-fast);
}
#profile-toggle-btn:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow-lg);
}

/* =========================================================
   BRIEFING STYLES
   ========================================================= */

/* Briefing Content */
.briefing-content {
    min-height: 200px;
}

.briefing-date {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
    padding-bottom: 0.75rem;
    border-bottom: 1px solid var(--border-light);
    color: var(--text-secondary);
    font-weight: 600;
}

.briefing-date .icon {
    width: 18px;
    height: 18px;
    fill: currentColor;
    opacity: 0.8;
}

.briefing-text {
    color: var(--text-primary);
    line-height: 1.7;
    margin-bottom: 1.5rem;
}

.briefing-text p {
    margin-bottom: 1rem;
}

.briefing-text h1,
.briefing-text h2,
.briefing-text h3,
.briefing-text h4 {
    color: var(--text-primary);
    margin: 1.5rem 0 0.75rem 0;
    font-weight: 700;
}

.briefing-text h1 {
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-size: 1.5rem;
}

.briefing-text h2 {
    font-size: 1.3rem;
    color: var(--text-secondary);
}

.briefing-text h3 {
    font-size: 1.1rem;
    color: var(--text-secondary);
}

.briefing-text ul,
.briefing-text ol {
    margin: 1rem 0;
    padding-left: 1.5rem;
}

.briefing-text li {
    margin-bottom: 0.5rem;
}

.briefing-text strong {
    color: var(--text-primary);
    font-weight: 700;
}

.briefing-text code {
    background: var(--bg-light);
    padding: 0.25rem 0.5rem;
    border-radius: var(--radius-sm);
    font-family: 'Courier New', monospace;
    font-size: 0.9rem;
}

.briefing-meta {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: 0.75rem;
    border-top: 1px solid var(--border-light);
    color: var(--text-muted);
    font-size: 0.875rem;
}

.briefing-generated {
    display: flex;
    align-items: center;
    gap: 0.375rem;
    opacity: 0.8;
}

.briefing-generated .icon {
    width: 14px;
    height: 14px;
    fill: currentColor;
}

/* Error and Loading States */
.briefing-content .error-state,
.briefing-content .no-briefing-state {
    text-align: center;
    padding: 2rem 1rem;
}

.briefing-content .error-state svg,
.briefing-content .no-briefing-state svg {
    width: 24px !important;
    height: 24px !important;
    margin-bottom: 1rem;
    opacity: 0.5;
    color: var(--text-light);
}

/* Global fix for oversized inline SVGs in error/empty states */
.memory-grid svg[width="48"],
.briefing-content svg[width="48"],
.loading svg[width="48"],
.error svg[width="48"],
.no-data svg[width="48"],
.no-results svg[width="48"] {
    width: 24px !important;
    height: 24px !important;
}

.briefing-content .error-state h3,
.briefing-content .no-briefing-state h3 {
    margin-bottom: 0.5rem;
    color: var(--text-secondary);
    font-size: 1.1rem;
}

.briefing-content .error-state p,
.briefing-content .no-briefing-state p {
    color: var(--text-muted);
    font-size: 0.95rem;
}

/* Search Panel */
.search-panel {
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    margin-bottom: 1.5rem;
    border: 2px solid var(--border-light);
    transition: all var(--transition-normal);
    overflow: hidden;
}

.search-panel.collapsed {
    max-height: 0;
    padding: 0 1.5rem;
    margin-bottom: 0;
    opacity: 0;
    transform: translateY(-10px);
}

.search-controls {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.search-row {
    display: flex;
    gap: 1rem;
    align-items: center;
    flex-wrap: wrap;
}

.search-row input {
    flex: 1;
    min-width: 200px;
    padding: 0.75rem;
    border: 1px solid var(--border-light);
    border-radius: var(--radius-md);
    font-size: 1rem;
    transition: all var(--transition-normal);
    background: var(--bg-white);
}

.search-row input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

.date-range {
    display: flex;
    gap: 0.5rem;
    align-items: center;
}

.date-range input {
    min-width: 150px;
}

.search-buttons {
    display: flex;
    gap: 0.5rem;
}

.btn-search {
    background: var(--primary-gradient);
    color: white;
    border: none;
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius-md);
    font-weight: 600;
    transition: all var(--transition-normal);
}

.btn-search:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

/* Quick Filters */
.quick-filters {
    margin-top: 1.5rem;
    border-top: 1px solid var(--border-light);
    padding-top: 1.5rem;
}

.filter-group {
    margin-bottom: 1rem;
}

.filter-group-label {
    display: block;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
    font-size: 0.9rem;
}

.filter-pills {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.filter-pill {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    padding: 0.5rem 0.75rem;
    background: var(--bg-white);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-full);
    color: var(--text-secondary);
    font-size: 0.85rem;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-normal);
}

.filter-pill:hover {
    background: rgba(102, 126, 234, 0.1);
    border-color: var(--primary-color);
    color: var(--primary-color);
    transform: translateY(-1px);
}

.pill-count {
    background: rgba(102, 126, 234, 0.2);
    color: var(--primary-color);
    padding: 0.125rem 0.375rem;
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    font-weight: 600;
    min-width: 1.5rem;
    text-align: center;
}

.loading-pills {
    color: var(--text-muted);
    font-style: italic;
    padding: 0.5rem;
}

.no-pills {
    color: var(--text-muted);
    font-style: italic;
    padding: 0.5rem;
}

/* =========================================================
   MEMORY GRID SYSTEM - Bootstrap Cards Enhanced
   ========================================================= */

/* Memory Grid Layout - Using Bootstrap Grid */
.memory-list-container {
    display: grid;
    gap: 1rem;
    grid-template-columns: 1fr;
}

/* Bootstrap Card Enhancements for Memory Items - Handled by bootstrap-overrides.css */

/* Memory Tags - Enhanced Bootstrap Badges */
.memory-tag.badge {
    cursor: pointer;
    transition: all var(--transition-fast);
}

.memory-tag.badge:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow-sm);
}

/* Memory Source Badge */
.memory-source.badge {
    cursor: pointer;
    transition: all var(--transition-fast);
}

.memory-source.badge:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow-sm);
}

/* Active source filter indicator */
.memories-section[data-source-filter] .search-panel::before {
    content: "Filtering by source: " attr(data-source-filter);
    display: block;
    padding: 0.5rem;
    margin-bottom: 0.75rem;
    background: rgba(118, 75, 162, 0.1);
    border: 1px solid rgba(118, 75, 162, 0.3);
    border-radius: var(--radius-sm);
    font-size: 0.875rem;
    color: var(--text-primary);
    font-weight: 500;
}

.memory-text {
    white-space: pre-wrap;
    word-wrap: break-word;
}

/* =========================================================
   SKELETON LOADER STYLES
   ========================================================= */

.skeleton-loader {
    padding: 1rem;
    animation: fadeIn 0.3s ease;
}

.skeleton {
    background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
    background-size: 200% 100%;
    animation: shimmer 2s infinite ease-in-out;
    border-radius: var(--radius-sm);
    margin-bottom: 0.75rem;
    position: relative;
    overflow: hidden;
}

.skeleton-text {
    height: 1rem;
    width: 100%;
}

.skeleton-text.small {
    width: 60%;
    height: 0.875rem;
}

.skeleton-text.medium {
    width: 80%;
    height: 1rem;
}

.skeleton-text.large {
    width: 95%;
    height: 1.25rem;
}

.skeleton-card {
    height: 200px;
    width: 100%;
    border-radius: var(--radius-lg);
}

.skeleton-memory {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    margin-bottom: 1rem;
    border: 1px solid var(--border-light);
}

.skeleton-memory .skeleton {
    background: linear-gradient(90deg, #e8e8e8 25%, #d8d8d8 50%, #e8e8e8 75%);
    background-size: 200% 100%;
}

/* Dark mode skeleton adjustments */
.dark-mode .skeleton {
    background: linear-gradient(90deg, #2d3748 25%, #4a5568 50%, #2d3748 75%);
    background-size: 200% 100%;
}

.dark-mode .skeleton-memory .skeleton {
    background: linear-gradient(90deg, #1a202c 25%, #2d3748 50%, #1a202c 75%);
    background-size: 200% 100%;
}

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

/* =========================================================
   UTILITY ANIMATIONS
   ========================================================= */

.spin {
    animation: spin 1s linear infinite;
}

@keyframes spin {
    from {
        transform: rotate(0deg);
    }
    to {
        transform: rotate(360deg);
    }
}

/* Chat message styling for modern messaging app appearance */
.max-width-70 {
    max-width: 70%;
}

.message-bubble {
    word-wrap: break-word;
    word-break: break-word;
}

.user-message {
    margin-left: auto;
}

.assistant-message {
    margin-right: auto;
}

/* Make chat bubbles wider on mobile screens */
@media (max-width: 575.98px) {
  #chat-messages .max-width-70 {
    max-width: 90% !important;
  }
}

.typing-dots {
    display: flex;
    align-items: center;
    gap: 4px;
}

.typing-dots .dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background-color: #6c757d;
    animation: typing 1.4s infinite ease-in-out;
}

.typing-dots .dot:nth-child(1) { animation-delay: -0.32s; }
.typing-dots .dot:nth-child(2) { animation-delay: -0.16s; }

@keyframes typing {
    0%, 80%, 100% {
        transform: scale(0);
        opacity: 0.5;
    }
    40% {
        transform: scale(1);
        opacity: 1;
    }
}

#chat-messages {
    scroll-behavior: smooth;
}

#chat-messages::-webkit-scrollbar {
    width: 6px;
}

#chat-messages::-webkit-scrollbar-track {
    background: #f1f1f1;
}

#chat-messages::-webkit-scrollbar-thumb {
    background: #c1c1c1;
    border-radius: 3px;
}

#chat-messages::-webkit-scrollbar-thumb:hover {
    background: #a8a8a8;
}

/* Responsive Design */
@media (max-width: 768px) {
    .memories-header {
        flex-direction: column;
        gap: 1rem;
        align-items: stretch;
    }
    
    .memories-actions {
        justify-content: center;
        flex-wrap: wrap;
    }
    
    .search-row {
        flex-direction: column;
        align-items: stretch;
    }
    
    .date-range {
        flex-direction: column;
    }
    
    .search-buttons {
        justify-content: center;
    }
    
    .filter-pills {
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .memories-title h2 {
        font-size: 1.5rem;
    }
    
    .btn-add-memory,
    .btn-search-toggle {
        padding: 0.625rem 1rem;
        font-size: 0.9rem;
    }
    
    .search-panel {
        padding: 1rem;
    }
}

/* =========================================================
   PAGINATION STYLES - Bootstrap Enhanced
   ========================================================= */

.pagination-container {
    margin-top: 2rem;
    padding: 1.5rem 0;
    border-top: 1px solid var(--border-light);
    display: flex;
    flex-direction: column;
    gap: 1rem;
    align-items: center;
}

.pagination-info {
    color: var(--text-secondary);
    font-size: 0.9rem;
    text-align: center;
}

/* Use Bootstrap pagination with minimal overrides */
.pagination .page-link {
    color: var(--text-primary);
    background-color: var(--bg-card);
    border-color: var(--border-light);
    transition: all var(--transition-fast);
}

.pagination .page-link:hover {
    color: var(--text-primary);
    background-color: var(--bg-light);
    border-color: var(--border-medium);
    transform: translateY(-1px);
}

.pagination .page-item.active .page-link {
    background: var(--primary-gradient);
    border-color: transparent;
    box-shadow: var(--shadow-sm);
}

.pagination .page-item.disabled .page-link {
    opacity: 0.5;
    cursor: not-allowed;
    background: var(--bg-light);
}

/* --- Custom Search Bar Styles for Memories --- */
.memory-search-bar {
    background: #fff;
    border: 1px solid #dee2e6;
    border-radius: 0.75rem;
    box-shadow: 0 2px 8px rgba(102, 126, 234, 0.04);
    padding: 1rem 1.25rem 0.5rem 1.25rem;
    margin-bottom: 1rem;
}
.memory-search-bar input.form-control {
    border-radius: 0.5rem;
    border: 1px solid #ced4da;
    background: #f8f9fa;
}
.memory-search-bar .search-date-field {
    max-width: 150px;
    min-width: 120px;
}
.memory-search-bar button {
    min-width: 90px;
    height: 38px;
}
@media (max-width: 767.98px) {
    .memory-search-bar {
        flex-direction: column;
        padding: 0.75rem 0.5rem 0.5rem 0.5rem;
    }
    .memory-search-bar .search-date-field {
        max-width: 100%;
        min-width: 0;
    }
}

/* =========================================================
   CHAT VIEW LAYOUT STYLES
   ========================================================= */

/* Chat view container that fills remaining viewport */
#chat-view {
    height: calc(100vh - 320px);
    min-height: 400px;
}

/* Chat messages scrollable area */
#chat-messages {
    flex: 1;
    overflow-y: auto;
    min-height: 0; /* Important for flex child to shrink */
}

/* Chat input bar fixed at bottom */
#chat-input-bar {
    flex-shrink: 0;
}

/* Chat header fixed at top */
#chat-header {
    flex-shrink: 0;
}

/* Responsive adjustments for chat view */
@media (max-width: 768px) {
    #chat-view {
        height: calc(100vh - 280px);
        min-height: 350px;
    }
}

@media (max-width: 480px) {
    #chat-view {
        height: calc(100vh - 250px);
        min-height: 300px;
    }
}