/* CSS Reset and Base Styles */
/* Modern CSS Reset - https://piccalil.li/blog/a-modern-css-reset/ */
*,
*::before,
*::after {
    box-sizing: border-box;
}

* {
    margin: 0;
    padding: 0;
}

html {
    -webkit-text-size-adjust: 100%;
    scroll-behavior: smooth;
}

body {
    min-height: 100vh;
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

img,
picture,
video,
canvas,
svg {
    display: block;
    max-width: 100%;
}

input,
button,
textarea,
select {
    font: inherit;
}

p,
h1,
h2,
h3,
h4,
h5,
h6 {
    overflow-wrap: break-word;
}

#root,
#__next {
    isolation: isolate;
}

/* Design System Variables */
:root {
    /* Colors */
    --primary-color: #2563eb;
    --primary-hover: #1d4ed8;
    --primary-light: #dbeafe;
    --secondary-color: #64748b;
    --success-color: #10b981;
    --success-light: #d1fae5;
    --warning-color: #f59e0b;
    --warning-light: #fef3c7;
    --danger-color: #ef4444;
    --danger-light: #fee2e2;
    --neutral-color: #6b7280;
    --neutral-light: #f3f4f6;

    /* Backgrounds */
    --background-color: #f8fafc;
    --card-background: #ffffff;
    --overlay-background: rgba(0, 0, 0, 0.5);

    /* Text Colors */
    --text-primary: #1f2937;
    --text-secondary: #6b7280;
    --text-muted: #9ca3af;
    --text-inverse: #ffffff;

    /* Borders */
    --border-color: #e5e7eb;
    --border-hover: #d1d5db;
    --border-focus: #2563eb;

    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);

    /* Spacing Scale */
    --spacing-0: 0;
    --spacing-px: 1px;
    --spacing-0-5: 0.125rem;  /* 2px */
    --spacing-1: 0.25rem;     /* 4px */
    --spacing-1-5: 0.375rem;  /* 6px */
    --spacing-2: 0.5rem;      /* 8px */
    --spacing-2-5: 0.625rem;  /* 10px */
    --spacing-3: 0.75rem;     /* 12px */
    --spacing-3-5: 0.875rem;  /* 14px */
    --spacing-4: 1rem;        /* 16px */
    --spacing-5: 1.25rem;     /* 20px */
    --spacing-6: 1.5rem;      /* 24px */
    --spacing-7: 1.75rem;     /* 28px */
    --spacing-8: 2rem;        /* 32px */
    --spacing-9: 2.25rem;     /* 36px */
    --spacing-10: 2.5rem;     /* 40px */
    --spacing-12: 3rem;       /* 48px */
    --spacing-16: 4rem;       /* 64px */
    --spacing-20: 5rem;       /* 80px */
    --spacing-24: 6rem;       /* 96px */

    /* Typography Scale */
    --font-size-xs: 0.75rem;    /* 12px */
    --font-size-sm: 0.875rem;   /* 14px */
    --font-size-base: 1rem;     /* 16px */
    --font-size-lg: 1.125rem;   /* 18px */
    --font-size-xl: 1.25rem;    /* 20px */
    --font-size-2xl: 1.5rem;    /* 24px */
    --font-size-3xl: 1.875rem;  /* 30px */
    --font-size-4xl: 2.25rem;   /* 36px */
    --font-size-5xl: 3rem;      /* 48px */

    /* Font Weights */
    --font-weight-thin: 100;
    --font-weight-light: 300;
    --font-weight-normal: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;
    --font-weight-extrabold: 800;
    --font-weight-black: 900;

    /* Line Heights */
    --line-height-tight: 1.25;
    --line-height-snug: 1.375;
    --line-height-normal: 1.5;
    --line-height-relaxed: 1.625;
    --line-height-loose: 2;

    /* Border Radius */
    --radius-none: 0;
    --radius-sm: 0.125rem;   /* 2px */
    --radius: 0.25rem;       /* 4px */
    --radius-md: 0.375rem;   /* 6px */
    --radius-lg: 0.5rem;     /* 8px */
    --radius-xl: 0.75rem;    /* 12px */
    --radius-2xl: 1rem;      /* 16px */
    --radius-3xl: 1.5rem;    /* 24px */
    --radius-full: 9999px;

    /* Transitions */
    --transition-fast: 0.15s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-normal: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 0.3s cubic-bezier(0.4, 0, 0.2, 1);

    /* Z-Index Scale */
    --z-index-dropdown: 1000;
    --z-index-sticky: 1020;
    --z-index-fixed: 1030;
    --z-index-modal-backdrop: 1040;
    --z-index-modal: 1050;
    --z-index-popover: 1060;
    --z-index-tooltip: 1070;
}

/* Typography System */
body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-normal);
    line-height: var(--line-height-normal);
    color: var(--text-primary);
    background-color: var(--background-color);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Heading Hierarchy */
h1, h2, h3, h4, h5, h6 {
    font-weight: var(--font-weight-semibold);
    line-height: var(--line-height-tight);
    margin: 0;
    color: var(--text-primary);
}

h1 { font-size: var(--font-size-3xl); }
h2 { font-size: var(--font-size-2xl); }
h3 { font-size: var(--font-size-xl); }
h4 { font-size: var(--font-size-lg); }
h5 { font-size: var(--font-size-base); }
h6 { font-size: var(--font-size-sm); }

/* Text Elements */
p {
    margin: 0 0 var(--spacing-4) 0;
    line-height: var(--line-height-relaxed);
}

small {
    font-size: var(--font-size-sm);
    color: var(--text-muted);
}

/* Links */
a {
    color: var(--primary-color);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover,
a:focus {
    color: var(--primary-hover);
    text-decoration: underline;
}

a:focus {
    outline: 2px solid var(--border-focus);
    outline-offset: 2px;
}

/* Lists */
ul, ol {
    margin: 0 0 var(--spacing-4) 0;
    padding-left: var(--spacing-6);
}

li {
    line-height: var(--line-height-relaxed);
}

/* Code */
code, kbd, samp, pre {
    font-family: 'SF Mono', Monaco, 'Cascadia Code', 'Roboto Mono', Consolas, 'Courier New', monospace;
    font-size: 0.9em;
}

code {
    background-color: var(--neutral-light);
    padding: 0.125rem 0.25rem;
    border-radius: var(--radius);
    color: var(--danger-color);
}

pre {
    background-color: var(--text-primary);
    color: var(--text-inverse);
    padding: var(--spacing-4);
    border-radius: var(--radius-lg);
    overflow-x: auto;
    margin: var(--spacing-4) 0;
}

pre code {
    background: none;
    padding: 0;
    color: inherit;
}

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

/* Utility Classes */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-4);
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

.visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* Focus Management */
.focus-visible:focus {
    outline: 2px solid var(--border-focus);
    outline-offset: 2px;
}

/* Button Base Styles */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-2);
    padding: var(--spacing-2) var(--spacing-4);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    line-height: var(--line-height-tight);
    text-decoration: none;
    border: 1px solid transparent;
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: all var(--transition-fast);
    white-space: nowrap;
}

.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    pointer-events: none;
}

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

.btn-primary:hover,
.btn-primary:focus {
    background-color: var(--primary-hover);
    border-color: var(--primary-hover);
    transform: translateY(-1px);
    box-shadow: var(--shadow-lg);
}

.btn-secondary {
    background-color: var(--card-background);
    color: var(--text-primary);
    border-color: var(--border-color);
}

.btn-secondary:hover,
.btn-secondary:focus {
    background-color: var(--background-color);
    border-color: var(--border-hover);
    transform: translateY(-1px);
    box-shadow: var(--shadow);
}

.btn-ghost {
    background-color: transparent;
    color: var(--text-secondary);
    border-color: transparent;
}

.btn-ghost:hover,
.btn-ghost:focus {
    background-color: var(--background-color);
    color: var(--text-primary);
}

/* Form Elements */
.form-group {
    margin-bottom: var(--spacing-4);
}

.form-label {
    display: block;
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    color: var(--text-primary);
    margin-bottom: var(--spacing-2);
}

.form-input,
.form-select,
.form-textarea {
    width: 100%;
    padding: var(--spacing-2) var(--spacing-3);
    font-size: var(--font-size-base);
    line-height: var(--line-height-normal);
    color: var(--text-primary);
    background-color: var(--card-background);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
    outline: none;
    border-color: var(--border-focus);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.form-input:disabled,
.form-select:disabled,
.form-textarea:disabled {
    background-color: var(--neutral-light);
    color: var(--text-muted);
    cursor: not-allowed;
}

.form-error {
    font-size: var(--font-size-sm);
    color: var(--danger-color);
    margin-top: var(--spacing-1);
}

/* Card Component */
.card {
    background-color: var(--card-background);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow);
    overflow: hidden;
    transition: box-shadow var(--transition-normal);
}

.card:hover {
    box-shadow: var(--shadow-lg);
}

.card-header {
    padding: var(--spacing-6);
    border-bottom: 1px solid var(--border-color);
    background-color: var(--background-color);
}

.card-body {
    padding: var(--spacing-6);
}

.card-footer {
    padding: var(--spacing-6);
    border-top: 1px solid var(--border-color);
    background-color: var(--background-color);
}

/* Status Badges */
.badge {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-1);
    padding: var(--spacing-1) var(--spacing-2);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-medium);
    text-transform: uppercase;
    letter-spacing: 0.025em;
    border-radius: var(--radius-full);
    white-space: nowrap;
}

.badge-primary {
    background-color: var(--primary-light);
    color: var(--primary-color);
}

.badge-success {
    background-color: var(--success-light);
    color: var(--success-color);
}

.badge-warning {
    background-color: var(--warning-light);
    color: var(--warning-color);
}

.badge-danger {
    background-color: var(--danger-light);
    color: var(--danger-color);
}

.badge-neutral {
    background-color: var(--neutral-light);
    color: var(--neutral-color);
}

/* Skip Link */
.skip-link {
    position: absolute;
    top: -40px;
    left: 6px;
    background: var(--primary-color);
    color: white;
    padding: 8px;
    text-decoration: none;
    border-radius: var(--radius-md);
    z-index: 1000;
    transition: top var(--transition-fast);
}

.skip-link:focus {
    top: 6px;
}

/* Loading Screen */
.loading-screen {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-hover));
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    animation: fadeIn var(--transition-normal);
}

.loading-content {
    text-align: center;
    color: white;
}

.loading-text {
    display: block;
    margin-top: var(--spacing-md);
    font-size: var(--font-size-lg);
    font-weight: 500;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

/* Dashboard Container */
.dashboard-container {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Header */
.dashboard-header {
    background: var(--card-background);
    border-bottom: 1px solid var(--border-color);
    box-shadow: var(--shadow);
    position: sticky;
    top: 0;
    z-index: var(--z-index-sticky);
}

.header-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-4) var(--spacing-8);
    max-width: 1400px;
    margin: 0 auto;
}

.brand-logo {
    flex-shrink: 0;
}

.brand-text {
    color: var(--primary-color);
    font-size: var(--font-size-2xl);
    font-weight: var(--font-weight-bold);
    letter-spacing: -0.025em;
}

.brand-tagline {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-normal);
    color: var(--text-muted);
}

.header-nav {
    display: flex;
    align-items: center;
    gap: var(--spacing-6);
    margin: 0 var(--spacing-6);
}

.projects-summary {
    display: flex;
    gap: var(--spacing-4);
    align-items: center;
}

.project-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: var(--spacing-3) var(--spacing-4);
    background: var(--background-color);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    transition: all var(--transition-fast);
    min-width: 120px;
}

.project-item:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-color);
}

.project-name {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    font-weight: var(--font-weight-medium);
    margin-bottom: var(--spacing-1);
    text-align: center;
}

.mention-count {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-bold);
    color: var(--primary-color);
    line-height: var(--line-height-tight);
}

.header-aside {
    display: flex;
    gap: var(--spacing-6);
    align-items: center;
}

.projects-summary {
    display: flex;
    gap: 1.5rem;
}

.project-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 0.5rem 1rem;
    background: var(--background-color);
    border-radius: 8px;
    border: 1px solid var(--border-color);
}

.project-name {
    font-size: 0.875rem;
    color: var(--text-secondary);
    font-weight: 500;
}

.mention-count {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--primary-color);
}

.advisor-chat {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-hover));
    color: var(--text-inverse);
    padding: var(--spacing-4);
    border-radius: var(--radius-2xl);
    min-width: 240px;
    box-shadow: var(--shadow-lg);
    position: relative;
    overflow: hidden;
}

.advisor-chat::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(45deg, rgba(255, 255, 255, 0.1), transparent);
    pointer-events: none;
}

.advisor-info {
    position: relative;
    z-index: 1;
}

.advisor-details {
    margin-bottom: var(--spacing-3);
}

.advisor-name {
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-semibold);
    margin-bottom: var(--spacing-1);
    display: block;
}

.advisor-contact {
    font-size: var(--font-size-sm);
    opacity: 0.9;
}

.chat-btn {
    position: relative;
    z-index: 1;
    background: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(10px);
    color: var(--text-inverse);
    border: 1px solid rgba(255, 255, 255, 0.2);
    padding: var(--spacing-2) var(--spacing-4);
    border-radius: var(--radius-lg);
    font-weight: var(--font-weight-medium);
    font-size: var(--font-size-sm);
    cursor: pointer;
    transition: all var(--transition-fast);
    width: 100%;
    justify-content: center;
}

.chat-btn:hover,
.chat-btn:focus {
    background: rgba(255, 255, 255, 0.25);
    border-color: rgba(255, 255, 255, 0.4);
    transform: translateY(-1px);
}

.webinar-notice {
    background: linear-gradient(135deg, var(--warning-color), #d97706);
    color: var(--text-inverse);
    padding: var(--spacing-4);
    border-radius: var(--radius-2xl);
    min-width: 240px;
    box-shadow: var(--shadow-lg);
    position: relative;
    overflow: hidden;
}

.webinar-notice::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(45deg, rgba(255, 255, 255, 0.1), transparent);
    pointer-events: none;
}

.webinar-content {
    position: relative;
    z-index: 1;
}

.webinar-title {
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-semibold);
    margin-bottom: var(--spacing-1);
    display: block;
}

.webinar-date {
    font-size: var(--font-size-sm);
    opacity: 0.9;
    margin-bottom: var(--spacing-1);
    display: block;
}

.webinar-time {
    font-size: var(--font-size-sm);
    opacity: 0.8;
    display: block;
}

.webinar-signup {
    position: relative;
    z-index: 1;
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-1);
    margin-top: var(--spacing-3);
    color: var(--text-inverse);
    text-decoration: underline;
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.webinar-signup:hover,
.webinar-signup:focus {
    opacity: 0.8;
    text-decoration: none;
}

/* Main Content */
.main-content {
    display: flex;
    flex: 1;
    min-height: calc(100vh - 140px);
}

/* Sidebar */
.sidebar {
    width: 280px;
    background: var(--card-background);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    box-shadow: var(--shadow);
}

.nav-menu {
    flex: 1;
    padding: var(--spacing-6) 0;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
    padding: var(--spacing-4) var(--spacing-6);
    text-decoration: none;
    color: var(--text-secondary);
    font-weight: var(--font-weight-medium);
    font-size: var(--font-size-base);
    transition: all var(--transition-fast);
    border-left: 3px solid transparent;
    position: relative;
}

.nav-item:hover {
    background: var(--background-color);
    color: var(--text-primary);
    transform: translateX(4px);
}

.nav-item.active {
    background: linear-gradient(90deg, var(--primary-color), var(--primary-hover));
    color: var(--text-inverse);
    border-left-color: var(--primary-color);
    box-shadow: inset 0 1px 2px rgba(0, 0, 0, 0.1);
}

.nav-item.active::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 4px;
    background: var(--text-inverse);
    border-radius: 0 2px 2px 0;
}

.nav-item i {
    width: 20px;
    text-align: center;
    font-size: var(--font-size-lg);
    opacity: 0.8;
}

.nav-item.active i {
    opacity: 1;
}

.nav-text {
    flex: 1;
}

.nav-item .sr-only {
    position: static;
    width: auto;
    height: auto;
    padding: 0;
    margin: 0;
    overflow: visible;
    clip: auto;
    white-space: normal;
    border: 0;
    font-size: var(--font-size-sm);
    opacity: 0.7;
}

/* Main Content Area */
.content-area {
    flex: 1;
    padding: var(--spacing-8);
    display: flex;
    gap: var(--spacing-8);
    max-width: 1400px;
    margin: 0 auto;
    width: 100%;
}

/* Filters Panel */
.filters-panel {
    width: 320px;
    background: var(--card-background);
    border-radius: var(--radius-2xl);
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--border-color);
    overflow: hidden;
    position: sticky;
    top: var(--spacing-4);
    height: fit-content;
    max-height: calc(100vh - var(--spacing-8));
    overflow-y: auto;
}

.filters-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-6);
    border-bottom: 1px solid var(--border-color);
    background: var(--background-color);
    position: sticky;
    top: 0;
    z-index: 10;
}

.filters-header h3 {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-semibold);
    color: var(--text-primary);
    margin: 0;
}

.reset-filters {
    background: var(--danger-color);
    color: var(--text-inverse);
    border: none;
    padding: var(--spacing-2) var(--spacing-3);
    border-radius: var(--radius-lg);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    cursor: pointer;
    transition: all var(--transition-fast);
    box-shadow: var(--shadow-sm);
}

.reset-filters:hover,
.reset-filters:focus {
    background: #dc2626;
    transform: translateY(-1px);
    box-shadow: var(--shadow);
}

.filters-content {
    padding: var(--spacing-6);
}

.filter-group {
    margin-bottom: var(--spacing-6);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    overflow: hidden;
    background: var(--background-color);
}

.filter-group:last-child {
    margin-bottom: 0;
}

.filter-legend {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    padding: var(--spacing-4) var(--spacing-5);
    background: var(--card-background);
    border: none;
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-semibold);
    color: var(--text-primary);
    cursor: pointer;
    transition: all var(--transition-fast);
    position: relative;
}

.filter-legend:hover {
    background: var(--background-color);
}

.filter-legend:focus {
    outline: 2px solid var(--border-focus);
    outline-offset: -2px;
}

.filter-legend::after {
    content: '▼';
    font-size: var(--font-size-sm);
    color: var(--text-muted);
    transition: transform var(--transition-fast);
    margin-left: var(--spacing-2);
}

.filter-group[open] .filter-legend::after {
    transform: rotate(180deg);
}

.filter-group-content {
    padding: 0 var(--spacing-5) var(--spacing-5);
    animation: slideDown var(--transition-normal) ease-out;
}

@keyframes slideDown {
    from {
        opacity: 0;
        max-height: 0;
        padding-top: 0;
        padding-bottom: 0;
    }
    to {
        opacity: 1;
        max-height: 500px;
        padding-top: 0;
        padding-bottom: var(--spacing-5);
    }
}

.filter-group input[type="date"] {
    padding: 0.5rem;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    width: 100%;
    margin-bottom: 0.5rem;
}

.filter-group input[type="date"]:last-child {
    margin-bottom: 0;
}

.source-filters, .sentiment-filters {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.source-filters label, .sentiment-filters label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: normal;
    cursor: pointer;
}

#influence-min {
    width: 100%;
    margin-bottom: 0.5rem;
}

select {
    width: 100%;
    padding: 0.5rem;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    background: white;
}

.checkbox-group {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 0.5rem;
    margin-top: 0.5rem;
}

.checkbox-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.375rem 0.5rem;
    background: var(--background-color);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    cursor: pointer;
    transition: all 0.2s;
}

.checkbox-item:hover {
    background: rgba(37, 99, 235, 0.05);
    border-color: var(--primary-color);
}

.checkbox-item.selected {
    background: rgba(37, 99, 235, 0.1);
    border-color: var(--primary-color);
}

.checkbox-item input[type="checkbox"] {
    margin: 0;
}

.checkbox-item label {
    margin: 0;
    cursor: pointer;
    font-weight: normal;
    flex: 1;
}

/* Form Elements */
.filter-legend {
    font-size: var(--font-size-base);
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
    padding: 0;
}

.date-range-inputs {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.date-separator {
    color: var(--text-secondary);
    font-weight: 500;
}

.influence-controls {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.influence-display {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
}

.influence-value {
    font-weight: 600;
    color: var(--primary-color);
    min-width: 1.5rem;
    text-align: center;
}

/* Enhanced Checkbox Items */
.checkbox-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--background-color);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
    position: relative;
}

.checkbox-item:hover {
    background: rgba(37, 99, 235, 0.02);
    border-color: var(--primary-color);
    transform: translateY(-1px);
    box-shadow: var(--shadow);
}

.checkbox-item.selected {
    background: rgba(37, 99, 235, 0.05);
    border-color: var(--primary-color);
    box-shadow: 0 0 0 2px rgba(37, 99, 235, 0.1);
}

.checkbox-item input[type="checkbox"] {
    margin: 0;
    width: 1.2rem;
    height: 1.2rem;
    accent-color: var(--primary-color);
}

.checkbox-item label {
    margin: 0;
    cursor: pointer;
    font-weight: normal;
    flex: 1;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.source-count,
.sentiment-count {
    color: var(--text-muted);
    font-size: var(--font-size-sm);
    font-weight: 500;
}

/* Filter Summary */
.filter-summary {
    background: var(--background-color);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
    animation: slideDown var(--transition-normal);
}

.filter-summary-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-sm);
}

.filter-summary-header h4 {
    margin: 0;
    font-size: var(--font-size-base);
    font-weight: 600;
    color: var(--text-primary);
}

.active-filters {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}

.filter-tag {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-xs) var(--spacing-sm);
    background: var(--primary-color);
    color: white;
    border-radius: var(--radius-xl);
    font-size: var(--font-size-xs);
    font-weight: 500;
    transition: all var(--transition-fast);
}

.filter-tag:hover {
    background: var(--primary-hover);
    transform: translateY(-1px);
}

.filter-tag .remove-filter {
    cursor: pointer;
    opacity: 0.8;
    transition: opacity var(--transition-fast);
    padding: 0 var(--spacing-xs);
    margin-left: var(--spacing-xs);
    border-left: 1px solid rgba(255, 255, 255, 0.3);
}

.filter-tag .remove-filter:hover {
    opacity: 1;
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Mentions Container */
.mentions-container {
    flex: 1;
}

.mentions-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--border-color);
}

.mentions-stats {
    color: var(--text-secondary);
}

.sort-options {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.sort-options label {
    font-weight: 500;
}

.sort-options select {
    width: auto;
    min-width: 120px;
}

/* Mentions List */
.mentions-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-4);
    position: relative;
}

.mention-card {
    background: var(--card-background);
    border-radius: var(--radius-2xl);
    padding: var(--spacing-6);
    box-shadow: var(--shadow);
    border-left: 4px solid var(--neutral-color);
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
    border: 1px solid var(--border-color);
}

.mention-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--neutral-color), transparent);
    transition: background var(--transition-normal);
}

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

.mention-card:hover::before {
    background: linear-gradient(90deg, var(--primary-color), var(--primary-hover));
}

.mention-card.positive {
    border-left-color: var(--success-color);
}

.mention-card.positive::before {
    background: linear-gradient(90deg, var(--success-color), var(--success-light));
}

.mention-card.negative {
    border-left-color: var(--danger-color);
}

.mention-card.negative::before {
    background: linear-gradient(90deg, var(--danger-color), var(--danger-light));
}

.mention-card.neutral {
    border-left-color: var(--neutral-color);
}

.mention-card.neutral::before {
    background: linear-gradient(90deg, var(--neutral-color), var(--neutral-light));
}

.mention-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: var(--spacing-4);
    position: relative;
}

.mention-author {
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
    flex: 1;
}

.author-avatar {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-hover));
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-inverse);
    font-weight: var(--font-weight-bold);
    font-size: var(--font-size-lg);
    box-shadow: var(--shadow);
    flex-shrink: 0;
}

.author-info h4 {
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-semibold);
    margin-bottom: var(--spacing-1);
    color: var(--text-primary);
    line-height: var(--line-height-tight);
}

.author-info span {
    color: var(--text-muted);
    font-size: var(--font-size-sm);
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
}

.platform-icon {
    width: 16px;
    height: 16px;
    opacity: 0.8;
}

.mention-badges {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    gap: var(--spacing-2);
    flex-shrink: 0;
}

.mention-content {
    margin-bottom: var(--spacing-4);
    position: relative;
}

.mention-title {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
    color: var(--text-primary);
    margin-bottom: var(--spacing-2);
    line-height: var(--line-height-tight);
}

.mention-text {
    color: var(--text-primary);
    line-height: var(--line-height-relaxed);
    font-size: var(--font-size-base);
}

.engagement-metrics {
    display: flex;
    gap: var(--spacing-4);
    margin-bottom: var(--spacing-4);
    flex-wrap: wrap;
}

.metric-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    padding: var(--spacing-1) var(--spacing-2);
    background: var(--background-color);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
    transition: all var(--transition-fast);
}

.metric-item:hover {
    background: var(--neutral-light);
    border-color: var(--border-hover);
}

.metric-item i {
    width: 14px;
    text-align: center;
    opacity: 0.8;
}

/* Footer */
.dashboard-footer {
    background: var(--card-background);
    border-top: 1px solid var(--border-color);
    padding: var(--spacing-xl) var(--spacing-2xl);
    margin-top: var(--spacing-2xl);
}

.footer-nav {
    margin-bottom: var(--spacing-lg);
}

.footer-links {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-lg);
    list-style: none;
    padding: 0;
    margin: 0;
}

.footer-links li {
    display: inline;
}

.footer-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: var(--font-size-sm);
    transition: color var(--transition-fast);
    padding: var(--spacing-xs) 0;
    border-bottom: 1px solid transparent;
}

.footer-links a:hover,
.footer-links a:focus {
    color: var(--primary-color);
    border-bottom-color: var(--primary-color);
}

.footer-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--spacing-lg);
}

.copyright {
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.version-info {
    background: var(--background-color);
    padding: 2px var(--spacing-xs);
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--text-muted);
}

/* Status Indicators */
.status-indicator {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-xl);
    font-size: var(--font-size-xs);
    font-weight: 500;
    text-transform: uppercase;
}

.status-online {
    background: rgba(16, 185, 129, 0.1);
    color: var(--success-color);
}

.status-offline {
    background: rgba(239, 68, 68, 0.1);
    color: var(--danger-color);
}

.status-warning {
    background: rgba(245, 158, 11, 0.1);
    color: var(--warning-color);
}

.status-indicator i {
    font-size: 0.5rem;
}

/* Sidebar Actions */
.sidebar-actions {
    padding: var(--spacing-6);
    border-top: 1px solid var(--border-color);
    background: var(--background-color);
}

.sidebar-action-btn {
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
    width: 100%;
    padding: var(--spacing-3) var(--spacing-4);
    background: var(--card-background);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    color: var(--text-primary);
    text-decoration: none;
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    cursor: pointer;
    transition: all var(--transition-fast);
    box-shadow: var(--shadow-sm);
    margin-bottom: var(--spacing-3);
}

.sidebar-action-btn:hover,
.sidebar-action-btn:focus {
    background: var(--primary-color);
    color: var(--text-inverse);
    border-color: var(--primary-color);
    transform: translateY(-2px);
    box-shadow: var(--shadow);
}

.sidebar-action-btn:active {
    transform: translateY(0);
    box-shadow: var(--shadow-sm);
}

.sidebar-action-btn:last-child {
    margin-bottom: 0;
}

.sidebar-action-btn i {
    width: 18px;
    text-align: center;
    font-size: var(--font-size-base);
    opacity: 0.8;
}

.sidebar-action-btn:hover i,
.sidebar-action-btn:focus i {
    opacity: 1;
}

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

/* Focus Management */
.nav-item:focus,
.sidebar-action-btn:focus,
.load-more-btn:focus,
.reset-filters:focus,
.action-btn:focus {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

/* High Contrast Mode Support */
@media (prefers-contrast: high) {
    :root {
        --border-color: #000000;
        --text-secondary: #000000;
    }
}

/* Reduced Motion Support */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* Responsive Design */
@media (max-width: 1200px) {
    .filters-panel {
        width: 280px;
    }
}

@media (max-width: 1024px) {
    .content-area {
        flex-direction: column;
        gap: var(--spacing-xl);
    }

    .filters-panel {
        width: 100%;
        order: 2;
    }

    .mentions-container {
        order: 1;
    }

    .sidebar {
        width: 220px;
    }
}

@media (max-width: 768px) {
    .dashboard-header {
        flex-direction: column;
        gap: var(--spacing-lg);
        padding: var(--spacing-lg);
    }

    .header-nav,
    .header-aside {
        width: 100%;
    }

    .projects-summary {
        justify-content: center;
        flex-wrap: wrap;
    }

    .advisor-chat,
    .webinar-notice {
        flex: 1;
        min-width: 250px;
    }

    .sidebar {
        width: 100%;
        position: fixed;
        bottom: 0;
        left: 0;
        right: 0;
        z-index: 1000;
        border-top: 1px solid var(--border-color);
        border-right: none;
        padding: 0;
        max-height: 80px;
        overflow: hidden;
    }

    .nav-menu {
        flex-direction: row;
        overflow-x: auto;
        padding: 0 var(--spacing-md);
        scrollbar-width: none;
        -ms-overflow-style: none;
    }

    .nav-menu::-webkit-scrollbar {
        display: none;
    }

    .nav-item {
        padding: var(--spacing-md) var(--spacing-sm);
        white-space: nowrap;
        border-left: none;
        border-bottom: 3px solid transparent;
        flex-shrink: 0;
    }

    .nav-item.active {
        border-bottom-color: var(--primary-color);
        border-left: none;
    }

    .nav-text {
        display: none;
    }

    .sidebar-actions {
        display: none;
    }

    .content-area {
        padding: var(--spacing-lg);
    }

    .mentions-header {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--spacing-md);
    }

    .footer-meta {
        flex-direction: column;
        align-items: center;
        gap: var(--spacing-sm);
    }
}

@media (max-width: 640px) {
    .projects-summary {
        flex-wrap: wrap;
        justify-content: center;
    }

    .project-item {
        min-width: 140px;
        flex: 1;
    }

    .advisor-chat,
    .webinar-notice {
        min-width: auto;
        flex: 1;
    }

    .mention-header {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--spacing-sm);
    }

    .mention-stats {
        flex-wrap: wrap;
        gap: var(--spacing-md);
    }

    .engagement-metrics {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--spacing-xs);
    }

    .footer-links {
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .dashboard-header {
        padding: var(--spacing-md);
    }

    .brand-text {
        font-size: var(--font-size-xl);
    }

    .content-area {
        padding: var(--spacing-md);
    }

    .filters-panel {
        padding: var(--spacing-lg);
    }

    .checkbox-item {
        padding: var(--spacing-sm);
    }

    .mentions-empty {
        padding: var(--spacing-xl) var(--spacing-lg);
    }

    .dashboard-footer {
        padding: var(--spacing-lg);
        text-align: center;
    }
}

/* Loading States */
.loading {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-8);
    color: var(--text-secondary);
    text-align: center;
}

.loading-spinner {
    width: 32px;
    height: 32px;
    border: 3px solid var(--border-color);
    border-top: 3px solid var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-bottom: var(--spacing-4);
}

.loading-text {
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-medium);
    margin-bottom: var(--spacing-2);
}

.loading-subtext {
    font-size: var(--font-size-sm);
    color: var(--text-muted);
}

/* Skeleton Loading */
.skeleton {
    background: linear-gradient(90deg, var(--background-color) 25%, var(--neutral-light) 50%, var(--background-color) 75%);
    background-size: 200% 100%;
    animation: loading 1.5s infinite;
    border-radius: var(--radius-md);
}

.skeleton-text {
    height: var(--font-size-base);
    margin-bottom: var(--spacing-2);
}

.skeleton-text.short {
    width: 60%;
}

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

.skeleton-text.long {
    width: 100%;
}

.skeleton-avatar {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    flex-shrink: 0;
}

.skeleton-button {
    height: 36px;
    width: 100px;
    border-radius: var(--radius-lg);
}

.skeleton-card {
    padding: var(--spacing-6);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-2xl);
    box-shadow: var(--shadow);
}

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

/* Skeleton Mention Card */
.skeleton-mention {
    display: flex;
    gap: var(--spacing-4);
    padding: var(--spacing-6);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-2xl);
    box-shadow: var(--shadow);
    margin-bottom: var(--spacing-4);
}

.skeleton-mention-content {
    flex: 1;
}

.skeleton-mention-header {
    display: flex;
    gap: var(--spacing-3);
    margin-bottom: var(--spacing-4);
}

.skeleton-mention-meta {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-2);
    margin-bottom: var(--spacing-4);
}

.skeleton-mention-actions {
    display: flex;
    gap: var(--spacing-3);
    margin-top: var(--spacing-4);
    padding-top: var(--spacing-4);
    border-top: 1px solid var(--border-color);
}

/* Progress Indicators */
.progress-container {
    width: 100%;
    height: 4px;
    background: var(--neutral-light);
    border-radius: var(--radius-full);
    overflow: hidden;
    margin: var(--spacing-4) 0;
}

.progress-bar {
    height: 100%;
    background: linear-gradient(90deg, var(--primary-color), var(--primary-hover));
    border-radius: var(--radius-full);
    transition: width var(--transition-slow);
    animation: progress 2s ease-in-out infinite;
}

@keyframes progress {
    0% {
        width: 0%;
    }
    50% {
        width: 70%;
    }
    100% {
        width: 100%;
    }
}

/* Loading Overlay */
.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(4px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    animation: fadeIn var(--transition-normal);
}

.loading-overlay.dark {
    background: rgba(0, 0, 0, 0.8);
}

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

/* Error States */
.error {
    background: #fef2f2;
    border: 1px solid #fecaca;
    color: #dc2626;
    padding: 1rem;
    border-radius: 8px;
    margin: 1rem 0;
}

.error i {
    margin-right: 0.5rem;
}

/* Sentiment Indicators */
.sentiment-indicator {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    padding: 0.25rem 0.5rem;
    border-radius: 12px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
}

.sentiment-indicator.positive {
    background: rgba(16, 185, 129, 0.1);
    color: #10b981;
}

.sentiment-indicator.neutral {
    background: rgba(107, 114, 128, 0.1);
    color: #6b7280;
}

.sentiment-indicator.negative {
    background: rgba(239, 68, 68, 0.1);
    color: #ef4444;
}

/* Platform Badges */
.platform-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    padding: 0.25rem 0.5rem;
    background: var(--background-color);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    font-size: 0.75rem;
    color: var(--text-secondary);
}

.platform-badge i {
    font-size: 0.875rem;
}

/* Influence Score */
.influence-score {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    padding: 0.25rem 0.5rem;
    background: linear-gradient(135deg, var(--primary-color), #1d4ed8);
    color: white;
    border-radius: 12px;
    font-size: 0.75rem;
    font-weight: 600;
}

.influence-score.high {
    background: linear-gradient(135deg, #10b981, #059669);
}

.influence-score.medium {
    background: linear-gradient(135deg, #f59e0b, #d97706);
}

.influence-score.low {
    background: linear-gradient(135deg, #6b7280, #4b5563);
}

/* Engagement Metrics */
.engagement-metrics {
    display: flex;
    gap: 1rem;
    margin-top: 0.5rem;
}

.metric-item {
    display: flex;
    align-items: center;
    gap: 0.25rem;
    color: var(--text-secondary);
    font-size: 0.875rem;
}

.metric-item i {
    width: 16px;
    text-align: center;
}

/* Mention Actions */
.mention-actions {
    display: flex;
    gap: var(--spacing-3);
    margin-top: var(--spacing-4);
    padding-top: var(--spacing-4);
    border-top: 1px solid var(--border-color);
    flex-wrap: wrap;
}

.action-btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-2);
    padding: var(--spacing-2) var(--spacing-4);
    background: var(--background-color);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    color: var(--text-secondary);
    text-decoration: none;
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    cursor: pointer;
    transition: all var(--transition-fast);
    box-shadow: var(--shadow-sm);
}

.action-btn:hover,
.action-btn:focus {
    background: var(--primary-color);
    color: var(--text-inverse);
    border-color: var(--primary-color);
    transform: translateY(-1px);
    box-shadow: var(--shadow);
}

.action-btn:active {
    transform: translateY(0);
    box-shadow: var(--shadow-sm);
}

.action-btn i {
    font-size: var(--font-size-sm);
    width: 14px;
    text-align: center;
}

/* Mention Card Enhancements */
.mention-card-content {
    position: relative;
    z-index: 1;
}

.mention-card-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: var(--spacing-4);
    padding-top: var(--spacing-4);
    border-top: 1px solid var(--border-color);
}

.mention-timestamp {
    color: var(--text-muted);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-medium);
}

.mention-source-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-1);
    padding: var(--spacing-1) var(--spacing-2);
    background: var(--neutral-light);
    color: var(--text-secondary);
    border-radius: var(--radius-full);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-medium);
    text-transform: capitalize;
}

.mention-source-badge i {
    font-size: 10px;
    opacity: 0.8;
}

/* Loading States for Individual Cards */
.mention-card-loading {
    animation: pulse 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}

@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.5;
    }
}

/* Focus States */
.mention-card:focus-within {
    outline: 2px solid var(--border-focus);
    outline-offset: 2px;
}

/* Responsive Mention Cards */
@media (max-width: 768px) {
    .mention-card {
        padding: var(--spacing-4);
        margin: 0 var(--spacing-2);
    }

    .mention-header {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--spacing-3);
    }

    .mention-badges {
        flex-direction: row;
        align-items: center;
        width: 100%;
        justify-content: flex-start;
    }

    .engagement-metrics {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--spacing-2);
    }

    .mention-actions {
        flex-direction: column;
        width: 100%;
    }

    .action-btn {
        justify-content: center;
        flex: 1;
    }
}

/* Enhanced Mention Layout */
.mention-meta-info {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-top: 0.25rem;
}

.mention-badges {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    gap: 0.5rem;
}

.mention-title {
    font-size: 1.1rem;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
    display: block;
}

.mention-text {
    line-height: 1.6;
    color: var(--text-primary);
}

/* Notification System */
.notification {
    position: fixed;
    top: 20px;
    right: 20px;
    background: var(--primary-color);
    color: white;
    padding: 1rem 1.5rem;
    border-radius: 8px;
    box-shadow: var(--shadow-lg);
    z-index: 1000;
    font-weight: 500;
}

@keyframes slideIn {
    from {
        transform: translateX(100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

@keyframes slideOut {
    from {
        transform: translateX(0);
        opacity: 1;
    }
    to {
        transform: translateX(100%);
        opacity: 0;
    }
}

/* Loading States for Individual Mentions */
.mention-loading {
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 2rem;
    background: var(--card-background);
    border-radius: 12px;
    box-shadow: var(--shadow);
}

.mention-loading .loading-spinner {
    width: 24px;
    height: 24px;
    border: 3px solid var(--border-color);
    border-top: 3px solid var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

/* Mentions Section */
.mentions-container {
    background: var(--card-background);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow);
    overflow: hidden;
}

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

.mentions-stats {
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
}

.mentions-stats strong {
    color: var(--text-primary);
    font-weight: 600;
}

.sort-options {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.sort-label {
    font-weight: 500;
    color: var(--text-primary);
}

.sort-options select {
    padding: var(--spacing-xs) var(--spacing-sm);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    background: white;
    font-size: var(--font-size-sm);
    min-width: 120px;
}

/* Mentions List */
.mentions-list {
    min-height: 400px;
    position: relative;
}

.mentions-list[aria-busy="true"] {
    opacity: 0.7;
    pointer-events: none;
}

/* Empty State */
.mentions-empty {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-2xl);
    text-align: center;
    color: var(--text-secondary);
    min-height: 300px;
}

.mentions-empty i {
    font-size: 4rem;
    margin-bottom: var(--spacing-lg);
    opacity: 0.3;
    color: var(--text-muted);
}

.mentions-empty h3 {
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
    font-size: var(--font-size-xl);
}

.mentions-empty p {
    margin-bottom: var(--spacing-lg);
    max-width: 300px;
}

.reset-filters-alt {
    padding: var(--spacing-sm) var(--spacing-lg);
    background: var(--primary-color);
    color: white;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    font-weight: 500;
    transition: background-color var(--transition-fast);
}

.reset-filters-alt:hover {
    background: var(--primary-hover);
}

/* Load More */
.load-more-container {
    padding: var(--spacing-lg);
    text-align: center;
    border-top: 1px solid var(--border-color);
}

.load-more-btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-xl);
    background: var(--primary-color);
    color: white;
    border: none;
    border-radius: var(--radius-lg);
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-fast);
    box-shadow: var(--shadow);
}

.load-more-btn:hover {
    background: var(--primary-hover);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.load-more-btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
}

.loading-more {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md);
    color: var(--text-secondary);
}