/**
 * ====================================================================
 * ALPHAVAULT AI - INTEREST RATE TRACKER - ULTRA PREMIUM STYLES
 * ====================================================================
 * Design: Glassmorphism + Gradient Titles + Professional Charts + AI Insights
 */

/* ========================================
   VARIABLES
   ======================================== */
:root {
    --rate-primary: #3b82f6;
    --rate-secondary: #8b5cf6;
    --rate-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --rate-gradient-soft: linear-gradient(135deg, rgba(102, 126, 234, 0.1) 0%, rgba(118, 75, 162, 0.1) 100%);
    --rate-success: #10b981;
    --rate-danger: #ef4444;
    --rate-warning: #f59e0b;
    --rate-info: #3b82f6;
    --rate-neutral: #6c757d;
    
    --glass-bg: rgba(255, 255, 255, 0.95);
    --glass-border: rgba(255, 255, 255, 0.3);
    --glass-shadow: 0 8px 32px rgba(102, 126, 234, 0.15);
    
    --transition-smooth: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    --border-radius: 16px;
    --border-radius-lg: 24px;
}

body.dark-mode {
    --glass-bg: rgba(15, 23, 42, 0.95);
    --glass-border: rgba(100, 116, 139, 0.3);
    --glass-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
}

/* ========================================
   GRADIENT TITLES
   ======================================== */
.section-title {
    font-size: 1.5rem;
    margin-bottom: 24px;
    display: flex;
    align-items: center;
    gap: 12px;
    font-weight: 800;
}

.section-title i {
    background: var(--rate-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* ========================================
   SECTION HEADER WITH INFO BUTTON
   ======================================== */
.section-header-with-info {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 24px;
}

.info-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    background: transparent;
    border: 2px solid var(--glass-border);
    color: var(--text-secondary);
    border-radius: 50%;
    font-size: 1rem;
    cursor: pointer;
    transition: var(--transition-smooth);
    flex-shrink: 0;
}

.info-btn:hover {
    background: linear-gradient(135deg, #3b82f6, #2563eb);
    color: white;
    border-color: transparent;
    transform: scale(1.15) rotate(15deg);
    box-shadow: 0 8px 24px rgba(59, 130, 246, 0.4);
}

/* ========================================
   RATE DISPLAY GRID
   ======================================== */
.rates-dashboard-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 24px;
    margin-bottom: 32px;
}

.rate-display {
    background: var(--glass-bg);
    backdrop-filter: blur(20px) saturate(180%);
    border-radius: var(--border-radius-lg);
    padding: 32px;
    border: 2px solid var(--glass-border);
    box-shadow: var(--glass-shadow);
    transition: var(--transition-smooth);
    position: relative;
    overflow: hidden;
}

.rate-display::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: var(--rate-gradient);
    transform: scaleX(0);
    transition: var(--transition-smooth);
}

.rate-display:hover::before {
    transform: scaleX(1);
}

.rate-display:hover {
    transform: translateY(-8px) scale(1.02);
    box-shadow: 0 20px 60px rgba(102, 126, 234, 0.3);
    border-color: var(--rate-primary);
}

.rate-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}

.rate-title {
    font-size: 1.1rem;
    font-weight: 800;
    background: var(--rate-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.rate-icon {
    font-size: 2rem;
    background: var(--rate-gradient-soft);
    width: 50px;
    height: 50px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.rate-value-large {
    font-size: 3rem;
    font-weight: 900;
    background: var(--rate-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 12px;
    line-height: 1.2;
}

.rate-sublabel {
    font-size: 0.9rem;
    color: var(--text-secondary);
    font-weight: 600;
}

.rate-change {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 12px;
    border-radius: 8px;
    font-weight: 700;
    font-size: 0.85rem;
    margin-top: 12px;
}

.rate-change.positive {
    background: rgba(239, 68, 68, 0.1);
    color: var(--rate-danger);
}

.rate-change.negative {
    background: rgba(16, 185, 129, 0.1);
    color: var(--rate-success);
}

.rate-change.neutral {
    background: rgba(108, 117, 125, 0.1);
    color: var(--rate-neutral);
}

/* ========================================
   CHART WRAPPER
   ======================================== */
.chart-wrapper {
    background: var(--glass-bg);
    backdrop-filter: blur(20px) saturate(180%);
    border-radius: var(--border-radius-lg);
    border: 1px solid var(--glass-border);
    box-shadow: var(--glass-shadow);
    padding: 32px;
    transition: var(--transition-smooth);
    cursor: pointer;
    position: relative;
}

.chart-wrapper:hover {
    box-shadow: 0 16px 48px rgba(102, 126, 234, 0.25);
    transform: translateY(-4px);
}

.chart-wrapper::after {
    content: 'Click to expand';
    position: absolute;
    top: 16px;
    right: 16px;
    background: var(--rate-gradient-soft);
    padding: 6px 12px;
    border-radius: 8px;
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--text-secondary);
    opacity: 0;
    transition: var(--transition-smooth);
    pointer-events: none;
}

.chart-wrapper:hover::after {
    opacity: 1;
}

.chart {
    border-radius: 12px;
}

/* ========================================
   AI RECOMMENDATIONS
   ======================================== */
.ai-recommendations-section {
    background: var(--glass-bg);
    backdrop-filter: blur(20px) saturate(180%);
    border-radius: var(--border-radius-lg);
    border: 2px solid var(--rate-primary);
    box-shadow: var(--glass-shadow);
    padding: 40px;
    position: relative;
    overflow: hidden;
    margin-bottom: 32px;
}

.ai-recommendations-section::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(102, 126, 234, 0.1) 0%, transparent 70%);
    animation: rotate 20s linear infinite;
}

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

.ai-header {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 32px;
    position: relative;
    z-index: 1;
}

.ai-icon {
    width: 60px;
    height: 60px;
    background: var(--rate-gradient);
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    color: white;
    box-shadow: 0 8px 24px rgba(102, 126, 234, 0.4);
}

.ai-title-section h2 {
    font-size: 1.8rem;
    font-weight: 900;
    background: var(--rate-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 4px;
}

.ai-date {
    font-size: 0.9rem;
    color: var(--text-secondary);
    font-weight: 600;
}

.ai-insights-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 24px;
    position: relative;
    z-index: 1;
}

.ai-insight-card {
    background: rgba(255, 255, 255, 0.6);
    backdrop-filter: blur(10px);
    border-radius: var(--border-radius);
    padding: 24px;
    border: 1px solid var(--glass-border);
    transition: var(--transition-smooth);
}

body.dark-mode .ai-insight-card {
    background: rgba(30, 41, 59, 0.6);
}

.ai-insight-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 36px rgba(102, 126, 234, 0.2);
}

.insight-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 16px;
}

.insight-icon {
    width: 40px;
    height: 40px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.3rem;
}

.insight-icon.bullish {
    background: linear-gradient(135deg, var(--rate-success), #059669);
    color: white;
}

.insight-icon.bearish {
    background: linear-gradient(135deg, var(--rate-danger), #dc2626);
    color: white;
}

.insight-icon.neutral {
    background: linear-gradient(135deg, var(--rate-neutral), #495057);
    color: white;
}

.insight-title {
    font-size: 1.1rem;
    font-weight: 800;
    color: var(--text-primary);
}

.insight-content {
    font-size: 0.95rem;
    color: var(--text-secondary);
    line-height: 1.7;
    font-weight: 500;
}

.insight-content strong {
    font-weight: 800;
    color: var(--text-primary);
}

.ai-sentiment-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 16px;
    border-radius: 20px;
    font-weight: 700;
    font-size: 0.85rem;
    margin-top: 16px;
}

.ai-sentiment-badge.bullish {
    background: rgba(16, 185, 129, 0.15);
    color: var(--rate-success);
}

.ai-sentiment-badge.bearish {
    background: rgba(239, 68, 68, 0.15);
    color: var(--rate-danger);
}

.ai-sentiment-badge.neutral {
    background: rgba(108, 117, 125, 0.15);
    color: var(--rate-neutral);
}

/* ========================================
   PROJECTION SCENARIOS
   ======================================== */
.projection-scenarios {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 24px;
    margin-bottom: 32px;
}

.scenario-card {
    background: var(--glass-bg);
    backdrop-filter: blur(20px) saturate(180%);
    border-radius: var(--border-radius-lg);
    padding: 32px;
    border: 2px solid var(--glass-border);
    box-shadow: var(--glass-shadow);
    transition: var(--transition-smooth);
    position: relative;
    overflow: hidden;
}

.scenario-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    transform: scaleX(0);
    transition: var(--transition-smooth);
}

.scenario-card.optimistic::before {
    background: linear-gradient(90deg, #10b981, #059669);
}

.scenario-card.base::before {
    background: var(--rate-gradient);
}

.scenario-card.pessimistic::before {
    background: linear-gradient(90deg, #ef4444, #dc2626);
}

.scenario-card:hover::before {
    transform: scaleX(1);
}

.scenario-card:hover {
    transform: translateY(-8px) scale(1.02);
    box-shadow: 0 20px 60px rgba(102, 126, 234, 0.3);
}

.scenario-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 20px;
}

.scenario-icon {
    font-size: 2.5rem;
    width: 55px;
    height: 55px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 12px;
}

.scenario-card.optimistic .scenario-icon {
    background: linear-gradient(135deg, #10b981, #059669);
    color: white;
}

.scenario-card.base .scenario-icon {
    background: var(--rate-gradient);
    color: white;
}

.scenario-card.pessimistic .scenario-icon {
    background: linear-gradient(135deg, #ef4444, #dc2626);
    color: white;
}

.scenario-title {
    font-size: 1.3rem;
    font-weight: 800;
    background: var(--rate-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.scenario-rate {
    font-size: 2.8rem;
    font-weight: 900;
    margin-bottom: 16px;
    line-height: 1.2;
}

.scenario-card.optimistic .scenario-rate {
    color: var(--rate-success);
}

.scenario-card.base .scenario-rate {
    background: var(--rate-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.scenario-card.pessimistic .scenario-rate {
    color: var(--rate-danger);
}

.scenario-description {
    font-size: 0.95rem;
    color: var(--text-secondary);
    line-height: 1.7;
    font-weight: 500;
    margin-bottom: 20px;
}

.scenario-impact {
    padding-top: 20px;
    border-top: 1px solid var(--glass-border);
}

.scenario-impact-title {
    font-size: 0.85rem;
    font-weight: 800;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 12px;
}

.scenario-impact-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 10px;
    font-size: 0.9rem;
}

.scenario-impact-label {
    color: var(--text-secondary);
    font-weight: 600;
}

.scenario-impact-value {
    font-weight: 800;
    color: var(--text-primary);
}

/* ========================================
   SPREAD ANALYSIS
   ======================================== */
.spread-analysis-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 24px;
}

.spread-card {
    background: var(--glass-bg);
    backdrop-filter: blur(20px) saturate(180%);
    border-radius: var(--border-radius);
    padding: 24px;
    border: 2px solid var(--glass-border);
    box-shadow: var(--glass-shadow);
    transition: var(--transition-smooth);
}

.spread-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 36px rgba(102, 126, 234, 0.25);
}

.spread-title {
    font-size: 1rem;
    font-weight: 800;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 16px;
}

.spread-value {
    font-size: 2.2rem;
    font-weight: 900;
    background: var(--rate-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 8px;
}

.spread-interpretation {
    font-size: 0.85rem;
    color: var(--text-secondary);
    font-weight: 600;
    padding: 8px 12px;
    border-radius: 8px;
    background: var(--rate-gradient-soft);
}

.spread-interpretation.inverted {
    background: rgba(239, 68, 68, 0.1);
    color: var(--rate-danger);
}

.spread-interpretation.normal {
    background: rgba(16, 185, 129, 0.1);
    color: var(--rate-success);
}

.spread-interpretation.flat {
    background: rgba(245, 158, 11, 0.1);
    color: var(--rate-warning);
}

/* ========================================
   ECONOMIC IMPACT
   ======================================== */
.economic-impact-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 24px;
}

.impact-card {
    background: var(--glass-bg);
    backdrop-filter: blur(20px) saturate(180%);
    border-radius: var(--border-radius-lg);
    padding: 28px;
    border: 2px solid var(--glass-border);
    box-shadow: var(--glass-shadow);
    transition: var(--transition-smooth);
}

.impact-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 16px 48px rgba(102, 126, 234, 0.25);
}

.impact-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 20px;
}

.impact-icon {
    width: 50px;
    height: 50px;
    background: var(--rate-gradient);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: white;
}

.impact-title {
    font-size: 1.2rem;
    font-weight: 800;
    background: var(--rate-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.impact-description {
    font-size: 0.95rem;
    color: var(--text-secondary);
    line-height: 1.7;
    font-weight: 500;
    margin-bottom: 16px;
}

.impact-metrics {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
}

.impact-metric {
    background: var(--rate-gradient-soft);
    border-radius: 10px;
    padding: 12px;
    text-align: center;
}

.impact-metric-label {
    font-size: 0.75rem;
    color: var(--text-secondary);
    margin-bottom: 4px;
    font-weight: 700;
    text-transform: uppercase;
}

.impact-metric-value {
    font-size: 1.3rem;
    font-weight: 900;
    color: var(--text-primary);
}

/* ========================================
   MODALS
   ======================================== */
.modal {
    display: none;
    position: fixed;
    z-index: 10000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(10px);
    animation: fadeIn 0.3s ease;
}

.modal.active {
    display: flex;
    align-items: center;
    justify-content: center;
}

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

.modal-content {
    background: var(--glass-bg);
    backdrop-filter: blur(40px) saturate(180%);
    border-radius: var(--border-radius-lg);
    border: 1px solid var(--glass-border);
    box-shadow: 0 24px 80px rgba(0, 0, 0, 0.6);
    width: 95%;
    max-width: 1200px;
    max-height: 90vh;
    overflow-y: auto;
    animation: slideUp 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

@keyframes slideUp {
    from { 
        opacity: 0;
        transform: translateY(50px) scale(0.95);
    }
    to { 
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 24px 32px;
    border-bottom: 2px solid var(--glass-border);
    background: var(--rate-gradient-soft);
}

.modal-header h2 {
    font-size: 1.8rem;
    display: flex;
    align-items: center;
    gap: 12px;
    font-weight: 900;
}

.modal-header h2 i {
    background: var(--rate-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.modal-close {
    background: transparent;
    border: none;
    font-size: 2rem;
    color: var(--text-secondary);
    cursor: pointer;
    width: 44px;
    height: 44px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition-smooth);
}

.modal-close:hover {
    background: rgba(239, 68, 68, 0.15);
    color: var(--rate-danger);
    transform: rotate(90deg) scale(1.1);
}

.modal-body {
    padding: 32px;
}

.modal-chart {
    height: 600px;
    margin-bottom: 24px;
}

.modal-info {
    background: var(--rate-gradient-soft);
    border-radius: var(--border-radius);
    padding: 24px;
    margin-top: 24px;
}

.modal-info h3 {
    font-size: 1.3rem;
    font-weight: 800;
    margin-bottom: 16px;
    background: var(--rate-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.modal-info p {
    font-size: 1rem;
    line-height: 1.8;
    color: var(--text-secondary);
    margin-bottom: 12px;
    font-weight: 500;
}

.modal-info ul {
    margin-left: 20px;
    margin-bottom: 16px;
}

.modal-info li {
    font-size: 1rem;
    line-height: 1.8;
    color: var(--text-secondary);
    margin-bottom: 8px;
    font-weight: 500;
}

.modal-info strong {
    font-weight: 800;
    color: var(--text-primary);
}

/* ========================================
   FOOTER
   ======================================== */
footer {
    margin-top: 60px;
    padding: 32px;
    background: var(--rate-gradient-soft);
    border-radius: var(--border-radius);
    border: 1px solid var(--glass-border);
    text-align: center;
}

footer p {
    color: var(--text-secondary);
    font-weight: 600;
    font-size: 0.95rem;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

footer i {
    color: var(--rate-primary);
}

/* ========================================
   LOADING STATE
   ======================================== */
.loading-skeleton {
    background: linear-gradient(90deg, var(--glass-bg) 25%, rgba(102, 126, 234, 0.1) 50%, var(--glass-bg) 75%);
    background-size: 200% 100%;
    animation: loading 1.5s ease-in-out infinite;
    border-radius: var(--border-radius);
    height: 200px;
}

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

/* ========================================
   RESPONSIVE
   ======================================== */
@media (max-width: 1024px) {
    .rates-dashboard-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .projection-scenarios {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .rates-dashboard-grid {
        grid-template-columns: 1fr;
    }
    
    .section-title {
        font-size: 1.3rem;
    }
    
    .rate-value-large {
        font-size: 2.5rem;
    }
    
    .ai-recommendations-section {
        padding: 24px;
    }
    
    .ai-insights-grid {
        grid-template-columns: 1fr;
    }
    
    .chart-wrapper {
        padding: 20px;
    }
    
    .modal-content {
        width: 100%;
        max-height: 100vh;
        border-radius: 0;
    }
    
    .modal-chart {
        height: 400px;
    }
    
    .spread-analysis-grid,
    .economic-impact-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .section-title {
        font-size: 1.1rem;
    }
    
    .rate-display {
        padding: 20px;
    }
    
    .rate-value-large {
        font-size: 2rem;
    }
    
    .scenario-rate {
        font-size: 2.2rem;
    }
    
    .modal-header {
        padding: 16px 20px;
    }
    
    .modal-body {
        padding: 20px;
    }
}

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

/* ========================================
   PAGE TITLE (HEADER)
   ======================================== */
.top-header h1 {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-weight: 900;
    font-size: 1.8rem;
}

.top-header h1 i {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* ========================================
   SECTION TITLES
   ======================================== */
.section-title {
    font-size: 1.5rem;
    margin-bottom: 24px;
    display: flex;
    align-items: center;
    gap: 12px;
    font-weight: 800;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section-title i {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-size: 1.3rem;
}

/* ========================================
   CHART EXPAND BUTTON
   ======================================== */
.chart-expand-btn {
    position: absolute;
    top: 16px;
    right: 16px;
    z-index: 10;
    
    background: rgba(102, 126, 234, 0.15);
    backdrop-filter: blur(10px);
    border: 2px solid rgba(102, 126, 234, 0.3);
    border-radius: 12px;
    
    width: 44px;
    height: 44px;
    
    display: flex;
    align-items: center;
    justify-content: center;
    
    color: var(--primary);
    font-size: 1.1rem;
    
    cursor: pointer;
    transition: all 0.3s ease;
    
    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.15);
}

.chart-expand-btn:hover {
    background: rgba(102, 126, 234, 0.25);
    border-color: rgba(102, 126, 234, 0.5);
    transform: scale(1.1) rotate(90deg);
    box-shadow: 0 8px 24px rgba(102, 126, 234, 0.3);
}

.chart-expand-btn:active {
    transform: scale(0.95) rotate(90deg);
}

body.dark-mode .chart-expand-btn {
    background: rgba(139, 92, 246, 0.2);
    border-color: rgba(139, 92, 246, 0.4);
    color: #a78bfa;
}

body.dark-mode .chart-expand-btn:hover {
    background: rgba(139, 92, 246, 0.35);
    border-color: rgba(139, 92, 246, 0.6);
}