/* ===================================================================
   EXPENSE STRUCTURE - Financial Command Center
   Single-page dashboard with all charts and metrics visible
   Design: Refined luxury meets data density
   =================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Playfair+Display:wght@600;700;800&family=DM+Sans:wght@400;500;600;700&family=JetBrains+Mono:wght@400;500;600&display=swap');

:root {
    --exp-display: 'Playfair Display', Georgia, serif;
    --exp-body: 'DM Sans', system-ui, sans-serif;
    --exp-mono: 'JetBrains Mono', 'Courier New', monospace;

    --exp-cogs: #DC2626;
    --exp-cogs-light: #FEE2E2;
    --exp-opex: #D97706;
    --exp-opex-light: #FEF3C7;
    --exp-fixed: #1E40AF;
    --exp-fixed-light: #DBEAFE;
    --exp-variable: #059669;
    --exp-variable-light: #D1FAE5;
    --exp-accent: #7C3AED;

    --exp-bg: #FAFAF9;
    --exp-surface: #FFFFFF;
    --exp-border: #E7E5E4;
    --exp-shadow: rgba(0, 0, 0, 0.04);

    --exp-text-primary: #1C1917;
    --exp-text-secondary: #57534E;
    --exp-text-tertiary: #A8A29E;
}

/* ===================================================================
   CONTAINER
   =================================================================== */

.expense-structure-container {
    font-family: var(--exp-body);
    background: var(--exp-bg);
    padding: 0;
}

/* ===================================================================
   HEADER - Elegant Title Bar
   =================================================================== */

.expense-header {
    background: linear-gradient(to bottom, #FFFFFF 0%, #FAFAF9 100%);
    border-bottom: 1px solid var(--exp-border);
    padding: 2.5rem 3rem 2rem 3rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.expense-title-section h2,
.content-section-title {
    font-family: var(--exp-display);
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--exp-text-primary);
    margin: 0 0 0.5rem 0;
    letter-spacing: -0.03em;
}

.expense-subtitle {
    font-size: 0.938rem;
    color: var(--exp-text-secondary);
    font-family: var(--exp-mono);
    font-weight: 500;
    letter-spacing: 0.02em;
}

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

.action-button,
.module-action-btn {
    padding: 0.625rem 1.25rem;
    border: 1px solid var(--exp-border);
    border-radius: 8px;
    background: var(--exp-surface);
    color: var(--exp-text-primary);
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    font-family: var(--exp-body);
}

.action-button:hover,
.module-action-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px var(--exp-shadow);
    border-color: var(--exp-accent);
}

/* ===================================================================
   MAIN CONTENT - Dense 2-Column Layout
   =================================================================== */

.expense-view-container {
    padding: 2rem 3rem;
    display: flex;
    flex-direction: column;
    gap: 2rem;
    transition: padding 0.3s ease, gap 0.3s ease;
}

.expense-view-container .expense-metrics-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.5rem;
    margin-bottom: 0.5rem;
}

.expense-view-container .expense-chart-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
}

/* ===================================================================
   HERO - Total Expenses with Visual Breakdown
   =================================================================== */

.expense-hero {
    background: linear-gradient(135deg, #1E293B 0%, #334155 100%);
    color: white;
    padding: 3rem;
    border-radius: 16px;
    position: relative;
    overflow: hidden;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.12);
    transition: padding 0.3s ease;
    margin-bottom: 2rem;
}

.expense-hero::before {
    content: '';
    position: absolute;
    top: 0;
    right: 0;
    width: 300px;
    height: 300px;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.15) 0%, transparent 70%);
    pointer-events: none;
}

.expense-hero-content {
    position: relative;
    z-index: 1;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: flex-direction 0.3s ease, gap 0.3s ease;
}

.expense-hero-main {
    flex: 1;
}

.expense-hero-label {
    font-size: 0.813rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    opacity: 0.8;
    margin-bottom: 1rem;
}

.expense-hero-value {
    font-family: var(--exp-mono);
    font-size: 4rem;
    font-weight: 700;
    margin-bottom: 0.75rem;
    font-variant-numeric: tabular-nums;
    line-height: 1;
}

.expense-hero-context {
    font-size: 1.125rem;
    opacity: 0.9;
    line-height: 1.5;
    max-width: 600px;
}

.expense-hero-breakdown {
    display: flex;
    gap: 2.5rem;
    align-items: center;
}

.expense-hero-stat {
    text-align: right;
}

.expense-hero-stat-label {
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    opacity: 0.7;
    margin-bottom: 0.5rem;
}

.expense-hero-stat-value {
    font-family: var(--exp-mono);
    font-size: 1.75rem;
    font-weight: 600;
    font-variant-numeric: tabular-nums;
}

.expense-hero-composition {
    width: 180px;
    height: 180px;
    position: relative;
}

/* ===================================================================
   METRICS STRIP - Compact Row
   =================================================================== */

.expense-metrics-grid {
    grid-area: metrics;
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1rem;
}

.metric-card {
    background: var(--exp-surface);
    border: 1px solid var(--exp-border);
    border-radius: 12px;
    padding: 1.25rem 1.5rem;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}

.metric-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: var(--exp-border);
    transition: all 0.3s;
}

.metric-card.cogs::before { background: var(--exp-cogs); }
.metric-card.opex::before { background: var(--exp-opex); }
.metric-card.fixed::before { background: var(--exp-fixed); }
.metric-card.variable::before { background: var(--exp-variable); }

.metric-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 24px var(--exp-shadow);
}

.metric-icon {
    width: 48px;
    height: 48px;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

.metric-icon.cogs {
    background: var(--exp-cogs-light);
    color: var(--exp-cogs);
}

.metric-icon.opex {
    background: var(--exp-opex-light);
    color: var(--exp-opex);
}

.metric-icon.fixed {
    background: var(--exp-fixed-light);
    color: var(--exp-fixed);
}

.metric-icon.variable {
    background: var(--exp-variable-light);
    color: var(--exp-variable);
}

.metric-label {
    font-size: 0.688rem;
    font-weight: 700;
    color: var(--exp-text-tertiary);
    margin-bottom: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
}

.metric-value {
    font-family: var(--exp-mono);
    font-size: 1.75rem;
    font-weight: 600;
    color: var(--exp-text-primary);
    font-variant-numeric: tabular-nums;
    line-height: 1.2;
}

.metric-card.cogs .metric-value { color: var(--exp-cogs); }
.metric-card.opex .metric-value { color: var(--exp-opex); }
.metric-card.fixed .metric-value { color: var(--exp-fixed); }
.metric-card.variable .metric-value { color: var(--exp-variable); }

.metric-trend {
    display: flex;
    align-items: center;
    gap: 0.375rem;
    font-size: 0.813rem;
    margin-top: 0.5rem;
    color: var(--exp-text-secondary);
}

.trend-positive { color: var(--exp-variable); }
.trend-negative { color: var(--exp-cogs); }
.trend-neutral { color: var(--exp-text-tertiary); }

/* ===================================================================
   NEW METRIC CARDS - Professional SVG Icons
   =================================================================== */

.expense-metric-card {
    background: var(--exp-surface);
    border: 1px solid var(--exp-border);
    border-radius: 16px;
    padding: 2rem;
    display: flex;
    align-items: center;
    gap: 1.5rem;
    box-shadow: 0 2px 8px var(--exp-shadow);
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1),
                box-shadow 0.3s cubic-bezier(0.4, 0, 0.2, 1),
                gap 0.3s ease, padding 0.3s ease;
    position: relative;
    overflow: hidden;
}

.expense-metric-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: currentColor;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.expense-metric-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
}

.expense-metric-card:hover::before {
    opacity: 1;
}

.expense-metric-icon {
    width: 56px;
    height: 56px;
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.expense-metric-card:hover .expense-metric-icon {
    transform: scale(1.1) rotate(5deg);
}

.expense-metric-icon svg {
    width: 28px;
    height: 28px;
    stroke-width: 2.5;
}

.expense-metric-cogs {
    color: var(--exp-cogs);
}

.expense-metric-cogs .expense-metric-icon {
    background: var(--exp-cogs-light);
    color: var(--exp-cogs);
}

.expense-metric-opex {
    color: var(--exp-opex);
}

.expense-metric-opex .expense-metric-icon {
    background: var(--exp-opex-light);
    color: var(--exp-opex);
}

.expense-metric-fixed {
    color: var(--exp-fixed);
}

.expense-metric-fixed .expense-metric-icon {
    background: var(--exp-fixed-light);
    color: var(--exp-fixed);
}

.expense-metric-variable {
    color: var(--exp-variable);
}

.expense-metric-variable .expense-metric-icon {
    background: var(--exp-variable-light);
    color: var(--exp-variable);
}

.expense-metric-content {
    flex: 1;
    min-width: 0;
}

.expense-metric-label {
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--exp-text-tertiary);
    margin-bottom: 0.625rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    line-height: 1.2;
}

.expense-metric-value {
    font-family: var(--exp-mono);
    font-size: 1.875rem;
    font-weight: 600;
    color: currentColor;
    font-variant-numeric: tabular-nums;
    line-height: 1.1;
    margin-bottom: 0.375rem;
}

.expense-metric-subtitle {
    font-size: 0.813rem;
    color: var(--exp-text-secondary);
    font-weight: 500;
    line-height: 1.3;
}

/* ===================================================================
   DETAILED VIEW - Professional Table Layout
   =================================================================== */

.expense-detailed-container {
    padding: 2rem 3rem;
    display: flex;
    flex-direction: column;
    gap: 2.5rem;
}

.expense-detailed-section {
    background: var(--exp-surface);
    border: 1px solid var(--exp-border);
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 2px 8px var(--exp-shadow);
}

.expense-detailed-header {
    padding: 2rem 2.5rem;
    background: linear-gradient(to bottom, #FFFFFF 0%, #FAFAF9 100%);
    border-bottom: 2px solid var(--exp-border);
    border-left: 4px solid var(--exp-accent);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.expense-detailed-header-main {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

.expense-detailed-icon {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    background: var(--exp-bg);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--exp-accent);
}

.expense-detailed-icon svg {
    width: 24px;
    height: 24px;
}

.expense-detailed-title {
    font-family: var(--exp-display);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--exp-text-primary);
    margin: 0 0 0.375rem 0;
    letter-spacing: -0.01em;
}

.expense-detailed-subtitle {
    font-size: 0.875rem;
    color: var(--exp-text-secondary);
    font-weight: 500;
}

.expense-detailed-header-stats {
    display: flex;
    gap: 3rem;
}

.expense-detailed-stat {
    text-align: right;
}

.expense-detailed-stat-value {
    font-family: var(--exp-mono);
    font-size: 1.75rem;
    font-weight: 600;
    color: var(--exp-text-primary);
    margin-bottom: 0.25rem;
    font-variant-numeric: tabular-nums;
}

.expense-detailed-stat-label {
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--exp-text-tertiary);
}

.expense-detailed-table-wrapper {
    overflow-x: auto;
}

.expense-detailed-table {
    width: 100%;
    border-collapse: collapse;
    font-family: var(--exp-body);
}

.expense-detailed-table thead {
    background: var(--exp-bg);
    border-bottom: 2px solid var(--exp-border);
}

.expense-detailed-table th {
    padding: 1rem 1.5rem;
    text-align: left;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--exp-text-tertiary);
}

.expense-detail-col-rank {
    width: 60px;
    text-align: center !important;
}

.expense-detail-col-name {
    width: 35%;
}

.expense-detail-col-amount {
    width: 25%;
}

.expense-detail-col-percent {
    width: 20%;
}

.expense-detail-col-split {
    width: 20%;
}

.expense-detail-row {
    border-bottom: 1px solid var(--exp-border);
    transition: background 0.2s ease;
}

.expense-detail-row:hover {
    background: #FAFAF9;
}

.expense-detail-row:last-child {
    border-bottom: none;
}

.expense-detail-rank {
    text-align: center;
    font-family: var(--exp-mono);
    font-weight: 600;
    color: var(--exp-text-tertiary);
    font-size: 0.875rem;
    padding: 1.25rem 1rem;
}

.expense-detail-name {
    padding: 1.25rem 1.5rem;
}

.expense-detail-name-text {
    font-size: 0.938rem;
    font-weight: 600;
    color: var(--exp-text-primary);
    margin-bottom: 0.25rem;
}

.expense-detail-category {
    font-size: 0.75rem;
    color: var(--exp-text-secondary);
}

.expense-detail-amount {
    padding: 1.25rem 1.5rem;
}

.expense-detail-amount-value {
    font-family: var(--exp-mono);
    font-size: 0.938rem;
    font-weight: 600;
    color: var(--exp-text-primary);
    margin-bottom: 0.5rem;
    font-variant-numeric: tabular-nums;
}

.expense-detail-amount-bar {
    height: 6px;
    background: var(--exp-bg);
    border-radius: 3px;
    overflow: hidden;
}

.expense-detail-amount-fill {
    height: 100%;
    border-radius: 3px;
    transition: width 0.3s ease;
}

.expense-detail-percent {
    padding: 1.25rem 1.5rem;
}

.expense-detail-percent-category {
    font-family: var(--exp-mono);
    font-size: 0.938rem;
    font-weight: 600;
    color: var(--exp-text-primary);
    margin-bottom: 0.25rem;
}

.expense-detail-percent-revenue {
    font-size: 0.75rem;
    color: var(--exp-text-secondary);
}

.expense-detail-split {
    padding: 1.25rem 1.5rem;
}

.expense-detail-split-row {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 0.375rem;
}

.expense-detail-split-row:last-child {
    margin-bottom: 0;
}

.expense-detail-split-label {
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--exp-text-tertiary);
    min-width: 16px;
}

.expense-detail-split-value {
    font-family: var(--exp-mono);
    font-size: 0.813rem;
    font-weight: 500;
    color: var(--exp-text-secondary);
    font-variant-numeric: tabular-nums;
}

/* ===================================================================
   CHART CARDS - Immediate Visibility
   =================================================================== */

.expense-chart-card {
    background: var(--exp-surface);
    border: 1px solid var(--exp-border);
    border-radius: 16px;
    padding: 2rem;
    box-shadow: 0 2px 8px var(--exp-shadow);
    transition: padding 0.3s ease;
}

.expense-chart-card-1 { grid-area: chart1; }
.expense-chart-card-2 { grid-area: chart2; }
.expense-chart-card-3 { grid-area: chart3; }
.expense-chart-card-4 { grid-area: chart4; }

.chart-header,
.expense-chart-header,
.visualization-header {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    margin-bottom: 1.5rem;
    padding-bottom: 1rem;
    border-bottom: 2px solid var(--exp-bg);
}

.chart-title,
.expense-chart-title,
.visualization-title {
    font-family: var(--exp-display);
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--exp-text-primary);
    letter-spacing: -0.01em;
}

.chart-subtitle,
.expense-chart-subtitle {
    font-size: 0.813rem;
    color: var(--exp-text-tertiary);
    font-weight: 500;
}

.chart-container,
.expense-chart-canvas {
    height: 280px;
    position: relative;
    width: 100%;
    display: block;
}

.chart-container canvas,
.expense-chart-canvas canvas {
    display: block;
    box-sizing: border-box;
}

/* ===================================================================
   KEY INSIGHT - Bottom Banner
   =================================================================== */

.expense-key-insight {
    grid-area: insight;
    display: flex;
    align-items: center;
    gap: 1.5rem;
    padding: 2rem 2.5rem;
    border-radius: 16px;
    border-left: 6px solid;
    box-shadow: 0 4px 16px var(--exp-shadow);
    transition: flex-direction 0.3s ease, padding 0.3s ease, gap 0.3s ease;
}

.expense-key-insight.warning {
    background: linear-gradient(135deg, var(--exp-opex-light) 0%, #FFFBEB 100%);
    border-left-color: var(--exp-opex);
}

.expense-key-insight.danger {
    background: linear-gradient(135deg, var(--exp-cogs-light) 0%, #FFF1F2 100%);
    border-left-color: var(--exp-cogs);
}

.expense-key-insight.success {
    background: linear-gradient(135deg, var(--exp-variable-light) 0%, #ECFDF5 100%);
    border-left-color: var(--exp-variable);
}

.expense-key-insight.info {
    background: linear-gradient(135deg, var(--exp-fixed-light) 0%, #EFF6FF 100%);
    border-left-color: var(--exp-fixed);
}

.expense-insight-icon {
    font-size: 3rem;
    flex-shrink: 0;
    line-height: 1;
}

.expense-insight-content {
    flex: 1;
}

.expense-insight-title {
    font-family: var(--exp-display);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--exp-text-primary);
    margin-bottom: 0.5rem;
    letter-spacing: -0.01em;
}

.expense-insight-text {
    font-size: 1rem;
    color: var(--exp-text-secondary);
    line-height: 1.6;
}

/* ===================================================================
   CONTROLS STYLING (Keep them visible and beautiful)
   =================================================================== */

.expense-controls {
    background: var(--exp-surface);
    border-radius: 12px;
    padding: 1.5rem;
    margin: 1.5rem 3rem;
    box-shadow: 0 2px 8px var(--exp-shadow);
    border: 1px solid var(--exp-border);
    display: flex;
    flex-wrap: wrap;
    gap: 1.5rem;
    align-items: center;
}

.control-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.control-label {
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--exp-text-tertiary);
    font-family: var(--exp-body);
}

.analysis-type-selector {
    display: flex;
    background: var(--exp-bg);
    border-radius: 8px;
    padding: 0.25rem;
    gap: 0.25rem;
}

.analysis-type-btn {
    padding: 0.625rem 1.25rem;
    border: none;
    background: transparent;
    color: var(--exp-text-secondary);
    font-size: 0.875rem;
    font-weight: 600;
    cursor: pointer;
    border-radius: 6px;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    font-family: var(--exp-body);
}

.analysis-type-btn.active {
    background: var(--exp-surface);
    color: var(--exp-accent);
    box-shadow: 0 2px 4px var(--exp-shadow);
}

.analysis-type-btn:hover:not(.active) {
    color: var(--exp-text-primary);
}

.view-options {
    display: flex;
    gap: 0.5rem;
}

.view-option {
    padding: 0.5rem 1rem;
    border: 1px solid var(--exp-border);
    border-radius: 6px;
    background: var(--exp-surface);
    color: var(--exp-text-secondary);
    font-size: 0.813rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    font-family: var(--exp-body);
}

.view-option.active {
    background: var(--exp-accent);
    color: white;
    border-color: var(--exp-accent);
}

.view-option:hover:not(.active) {
    border-color: var(--exp-accent);
    color: var(--exp-accent);
}

.expense-visualization-area {
    display: block;
    margin: 0 3rem 2rem 3rem;
}

/* ===================================================================
   RESPONSIVE
   =================================================================== */

/* Desktop: Ensure 2-column layout is maintained above 1024px */
@media (min-width: 1025px) {
    .expense-view-container {
        grid-template-columns: 1fr 1fr !important;
        grid-template-areas:
            "hero hero"
            "metrics metrics"
            "chart1 chart2"
            "chart3 chart4"
            "insight insight" !important;
    }

    .expense-metrics-grid {
        grid-template-columns: repeat(4, 1fr) !important;
    }

    .expense-hero-content {
        flex-direction: row !important;
        align-items: center !important;
    }

    .expense-key-insight {
        flex-direction: row !important;
        align-items: center !important;
    }
}

/* Large tablets and smaller desktops (1024px - 1200px) */
@media (max-width: 1200px) and (min-width: 1025px) {
    .expense-view-container {
        padding: 1.5rem 2rem;
        gap: 1.75rem;
    }

    .expense-header {
        padding: 2.25rem 2rem 1.75rem 2rem;
    }

    .expense-title-section h2,
    .content-section-title {
        font-size: 2.25rem;
    }

    .expense-hero {
        padding: 2.5rem;
    }

    .expense-hero-value {
        font-size: 3.5rem;
    }

    .expense-hero-composition {
        width: 160px;
        height: 160px;
    }

    .expense-chart-card {
        padding: 1.75rem;
    }

    .chart-title,
    .visualization-title {
        font-size: 1.125rem;
    }

    .metric-value {
        font-size: 1.5rem;
    }
}

/* Tablets (768px - 1024px) - Switch to single column */
@media (max-width: 1024px) {
    .expense-view-container {
        grid-template-columns: 1fr;
        grid-template-areas:
            "hero"
            "metrics"
            "chart1"
            "chart2"
            "chart3"
            "chart4"
            "insight";
        padding: 1.5rem 2rem;
        gap: 1.5rem;
    }

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

    .expense-hero-content {
        flex-direction: column;
        gap: 2rem;
        align-items: flex-start;
    }

    .expense-hero-composition {
        align-self: center;
        width: 140px;
        height: 140px;
    }

    .expense-insight-icon {
        font-size: 2.5rem;
    }

    .expense-insight-title {
        font-size: 1.25rem;
    }

    .expense-insight-text {
        font-size: 0.938rem;
    }
}

/* Small tablets (600px - 768px) */
@media (max-width: 768px) {
    .expense-header {
        padding: 2rem 1.5rem 1.5rem 1.5rem;
        flex-direction: column;
        align-items: flex-start;
        gap: 1rem;
    }

    .expense-title-section h2,
    .content-section-title {
        font-size: 2rem;
    }

    .expense-subtitle {
        font-size: 0.875rem;
    }

    .expense-view-container {
        padding: 1.25rem 1.5rem;
        gap: 1.25rem;
    }

    .expense-metrics-grid {
        grid-template-columns: 1fr;
        gap: 0.875rem;
    }

    .metric-card {
        padding: 1rem 1.25rem;
    }

    .metric-value {
        font-size: 1.5rem;
    }

    .expense-hero {
        padding: 2rem;
    }

    .expense-hero-value {
        font-size: 2.75rem;
    }

    .expense-hero-composition {
        width: 120px;
        height: 120px;
    }

    .expense-chart-card {
        padding: 1.5rem;
    }

    .chart-container,
    .expense-chart-canvas {
        height: 240px;
    }

    .chart-title,
    .visualization-title {
        font-size: 1.125rem;
    }

    .expense-key-insight {
        flex-direction: column;
        align-items: flex-start;
        padding: 1.5rem;
        gap: 1rem;
    }

    .expense-insight-icon {
        font-size: 2.5rem;
    }

    .expense-insight-title {
        font-size: 1.25rem;
    }
}

/* Mobile landscape and larger phones (480px - 600px) */
@media (max-width: 600px) {
    .expense-header {
        padding: 1.75rem 1.25rem 1.25rem 1.25rem;
    }

    .expense-title-section h2,
    .content-section-title {
        font-size: 1.75rem;
    }

    .expense-view-container {
        padding: 1rem 1.25rem;
        gap: 1rem;
    }

    .expense-hero {
        padding: 1.75rem;
    }

    .expense-hero-value {
        font-size: 2.5rem;
    }

    .expense-chart-card {
        padding: 1.25rem;
    }

    .chart-container,
    .expense-chart-canvas {
        height: 220px;
    }

    .chart-title,
    .visualization-title {
        font-size: 1rem;
    }

    .chart-subtitle {
        font-size: 0.75rem;
    }

    .expense-key-insight {
        padding: 1.25rem;
    }

    .expense-insight-title {
        font-size: 1.125rem;
    }

    .expense-insight-text {
        font-size: 0.875rem;
    }
}

/* Small mobile (320px - 480px) */
@media (max-width: 480px) {
    .expense-header {
        padding: 1.5rem 1rem 1rem 1rem;
    }

    .expense-title-section h2,
    .content-section-title {
        font-size: 1.5rem;
        letter-spacing: -0.02em;
    }

    .expense-subtitle {
        font-size: 0.813rem;
    }

    .expense-view-container {
        padding: 1rem;
        gap: 1rem;
    }

    .expense-hero {
        padding: 1.5rem;
    }

    .expense-hero-label {
        font-size: 0.75rem;
        margin-bottom: 0.75rem;
    }

    .expense-hero-value {
        font-size: 2.25rem;
    }

    .expense-hero-context {
        font-size: 0.875rem;
    }

    .expense-hero-composition {
        width: 100px;
        height: 100px;
    }

    .metric-card {
        padding: 1rem;
    }

    .metric-icon {
        width: 40px;
        height: 40px;
        font-size: 1.25rem;
        margin-bottom: 0.75rem;
    }

    .metric-label {
        font-size: 0.625rem;
        margin-bottom: 0.5rem;
    }

    .metric-value {
        font-size: 1.375rem;
    }

    .expense-chart-card {
        padding: 1rem;
    }

    .chart-header,
    .visualization-header {
        margin-bottom: 1rem;
        padding-bottom: 0.75rem;
    }

    .chart-title,
    .visualization-title {
        font-size: 0.938rem;
    }

    .chart-subtitle {
        font-size: 0.688rem;
    }

    .chart-container,
    .expense-chart-canvas {
        height: 200px;
    }

    .expense-key-insight {
        padding: 1rem;
        gap: 0.875rem;
        border-left-width: 4px;
    }

    .expense-insight-icon {
        font-size: 2rem;
    }

    .expense-insight-title {
        font-size: 1rem;
    }

    .expense-insight-text {
        font-size: 0.813rem;
        line-height: 1.5;
    }

    .action-button,
    .module-action-btn {
        padding: 0.5rem 1rem;
        font-size: 0.813rem;
    }
}

/* ===================================================================
   PRINT STYLES
   =================================================================== */

/* ===================================================================
   TREEMAP VIEW STYLING
   =================================================================== */

.expense-treemap-container {
    padding: 2rem 3rem;
}

.expense-treemap-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
    padding-bottom: 1.5rem;
    border-bottom: 2px solid var(--exp-border);
}

.expense-treemap-title-section {
    flex: 1;
}

.expense-treemap-title {
    font-family: var(--exp-display);
    font-size: 1.75rem;
    font-weight: 600;
    color: var(--exp-text-primary);
    margin: 0 0 0.5rem 0;
    letter-spacing: -0.02em;
}

.expense-treemap-subtitle {
    font-size: 0.875rem;
    color: var(--exp-text-tertiary);
    font-weight: 500;
}

.expense-treemap-controls {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.expense-treemap-label {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--exp-text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.expense-treemap-select {
    font-family: var(--exp-body);
    font-size: 0.875rem;
    padding: 0.5rem 2rem 0.5rem 1rem;
    border: 1px solid var(--exp-border);
    border-radius: 8px;
    background: var(--exp-surface);
    color: var(--exp-text-primary);
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
}

.expense-treemap-select:hover {
    border-color: var(--exp-accent);
    box-shadow: 0 2px 8px var(--exp-shadow);
}

.expense-treemap-select:focus {
    outline: none;
    border-color: var(--exp-accent);
    box-shadow: 0 0 0 3px rgba(59, 90, 157, 0.1);
}

/* Stats Bar */
.expense-treemap-stats {
    display: flex;
    gap: 2rem;
    margin-bottom: 2rem;
    padding: 1.5rem 2rem;
    background: linear-gradient(to bottom, #FAFAF9 0%, #FFFFFF 100%);
    border: 1px solid var(--exp-border);
    border-radius: 12px;
}

.expense-treemap-stat {
    flex: 1;
    text-align: center;
}

.expense-treemap-stat-label {
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--exp-text-tertiary);
    margin-bottom: 0.5rem;
}

.expense-treemap-stat-value {
    font-family: var(--exp-mono);
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--exp-text-primary);
    font-variant-numeric: tabular-nums;
}

/* Treemap Visualization Container */
.expense-treemap-viz {
    background: var(--exp-surface);
    border: 1px solid var(--exp-border);
    border-radius: 12px;
    padding: 2rem;
    min-height: 500px;
}

/* Treemap Grid Layout */
.expense-treemap-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 1.5rem;
    width: 100%;
}

/* Treemap Box Styling */
.expense-treemap-box {
    background: var(--exp-surface);
    border: 1px solid var(--exp-border);
    border-left-width: 4px;
    border-radius: 12px;
    padding: 1.5rem;
    box-shadow: 0 2px 8px var(--exp-shadow);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}

.expense-treemap-box:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
}

/* Size variations based on importance */
.expense-treemap-box.treemap-box-large {
    grid-column: span 2;
    grid-row: span 2;
}

.expense-treemap-box.treemap-box-medium {
    grid-column: span 1;
    grid-row: span 2;
}

.expense-treemap-box.treemap-box-small {
    grid-column: span 1;
    grid-row: span 1;
}

/* Box Header */
.expense-treemap-box-header {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    margin-bottom: 1rem;
}

.expense-treemap-box-category {
    font-family: var(--exp-display);
    font-size: 0.875rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--exp-text-secondary);
}

.expense-treemap-box-percent {
    font-family: var(--exp-mono);
    font-size: 1.125rem;
    font-weight: 700;
    font-variant-numeric: tabular-nums;
}

.expense-treemap-box-amount {
    font-family: var(--exp-mono);
    font-size: 1.75rem;
    font-weight: 600;
    margin-bottom: 1.25rem;
    font-variant-numeric: tabular-nums;
}

/* Large boxes get bigger text */
.expense-treemap-box.treemap-box-large .expense-treemap-box-category {
    font-size: 1rem;
}

.expense-treemap-box.treemap-box-large .expense-treemap-box-percent {
    font-size: 1.5rem;
}

.expense-treemap-box.treemap-box-large .expense-treemap-box-amount {
    font-size: 2.25rem;
}

/* Children Accounts List */
.expense-treemap-children {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.expense-treemap-child {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.5rem 0.75rem;
    background: var(--exp-bg);
    border-radius: 6px;
    font-size: 0.813rem;
    transition: background 0.2s ease;
    cursor: default;
}

.expense-treemap-child:hover {
    background: #F0F1F3;
}

.expense-treemap-child-name {
    color: var(--exp-text-secondary);
    font-weight: 500;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    margin-right: 0.5rem;
}

.expense-treemap-child-percent {
    font-family: var(--exp-mono);
    font-weight: 600;
    color: var(--exp-text-primary);
    font-variant-numeric: tabular-nums;
    flex-shrink: 0;
}

.expense-treemap-child-more {
    font-size: 0.75rem;
    color: var(--exp-text-tertiary);
    font-style: italic;
    padding: 0.5rem 0.75rem;
    text-align: center;
}

/* Responsive Treemap */
@media (max-width: 1024px) {
    .expense-treemap-grid {
        grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
    }

    .expense-treemap-box.treemap-box-large {
        grid-column: span 1;
        grid-row: span 1;
    }

    .expense-treemap-box.treemap-box-medium {
        grid-column: span 1;
        grid-row: span 1;
    }
}

@media (max-width: 768px) {
    .expense-treemap-container {
        padding: 1.5rem;
    }

    .expense-treemap-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 1rem;
    }

    .expense-treemap-stats {
        flex-direction: column;
        gap: 1rem;
    }

    .expense-treemap-grid {
        grid-template-columns: 1fr;
    }

    .expense-treemap-box.treemap-box-large,
    .expense-treemap-box.treemap-box-medium,
    .expense-treemap-box.treemap-box-small {
        grid-column: span 1;
        grid-row: span 1;
    }
}

/* ===================================================================
   COMPARISON VIEW STYLING
   =================================================================== */

.expense-comparison-container {
    padding: 2rem 3rem;
}

.expense-comparison-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2.5rem;
    padding-bottom: 1.5rem;
    border-bottom: 2px solid var(--exp-border);
}

.expense-comparison-title-section {
    flex: 1;
}

.expense-comparison-title {
    font-family: var(--exp-display);
    font-size: 1.75rem;
    font-weight: 600;
    color: var(--exp-text-primary);
    margin: 0 0 0.5rem 0;
    letter-spacing: -0.02em;
}

.expense-comparison-subtitle {
    font-size: 0.875rem;
    color: var(--exp-text-tertiary);
    font-weight: 500;
}

.expense-comparison-summary {
    background: linear-gradient(135deg, #1E293B 0%, #334155 100%);
    color: white;
    padding: 1.5rem 2rem;
    border-radius: 12px;
    text-align: center;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.expense-comparison-summary-label {
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    opacity: 0.8;
    margin-bottom: 0.5rem;
}

.expense-comparison-summary-value {
    font-family: var(--exp-mono);
    font-size: 2rem;
    font-weight: 600;
    font-variant-numeric: tabular-nums;
    margin-bottom: 0.25rem;
}

.expense-comparison-summary-value.positive {
    color: #10B981;
}

.expense-comparison-summary-value.negative {
    color: #EF4444;
}

.expense-comparison-summary-percent {
    font-family: var(--exp-mono);
    font-size: 1.125rem;
    font-weight: 600;
    font-variant-numeric: tabular-nums;
}

.expense-comparison-summary-percent.positive {
    color: #10B981;
}

.expense-comparison-summary-percent.negative {
    color: #EF4444;
}

/* Comparison Cards Grid */
.expense-comparison-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2.5rem;
}

.expense-comparison-card {
    background: var(--exp-surface);
    border: 1px solid var(--exp-border);
    border-left-width: 4px;
    border-radius: 12px;
    padding: 1.5rem;
    box-shadow: 0 2px 8px var(--exp-shadow);
    transition: all 0.3s ease;
}

.expense-comparison-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(0, 0, 0, 0.12);
}

.expense-comparison-card-header {
    margin-bottom: 1.25rem;
    padding-bottom: 1rem;
    border-bottom: 2px solid var(--exp-bg);
}

.expense-comparison-card-category {
    font-family: var(--exp-display);
    font-size: 0.875rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--exp-text-secondary);
    margin-bottom: 0.25rem;
}

.expense-comparison-card-full-name {
    font-size: 0.75rem;
    color: var(--exp-text-tertiary);
    font-weight: 500;
}

.expense-comparison-card-values {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    margin-bottom: 1.25rem;
}

.expense-comparison-card-value-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.5rem 0;
}

.expense-comparison-card-value-row.current {
    padding: 0.75rem;
    background: var(--exp-bg);
    border-radius: 6px;
    margin: 0 -0.5rem;
    padding-left: 1rem;
    padding-right: 1rem;
}

.expense-comparison-card-label {
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--exp-text-tertiary);
}

.expense-comparison-card-amount {
    font-family: var(--exp-mono);
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--exp-text-primary);
    font-variant-numeric: tabular-nums;
}

.expense-comparison-card-value-row.current .expense-comparison-card-amount {
    font-size: 1.25rem;
}

.expense-comparison-card-change {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1rem;
    border-radius: 8px;
    font-weight: 600;
}

.expense-comparison-card-change.positive {
    background: #E6F4EF;
    color: #0A6E4E;
}

.expense-comparison-card-change.negative {
    background: #FCEDEF;
    color: #C7383E;
}

.expense-comparison-card-change-icon {
    font-size: 1.25rem;
    font-weight: 700;
}

.expense-comparison-card-change-amount {
    font-family: var(--exp-mono);
    font-size: 1rem;
    font-variant-numeric: tabular-nums;
}

.expense-comparison-card-change-percent {
    font-family: var(--exp-mono);
    font-size: 0.875rem;
    opacity: 0.8;
    font-variant-numeric: tabular-nums;
}

/* Chart Section */
.expense-comparison-chart-section {
    background: var(--exp-surface);
    border: 1px solid var(--exp-border);
    border-radius: 12px;
    padding: 2rem;
    box-shadow: 0 2px 8px var(--exp-shadow);
}

.expense-comparison-chart-title {
    font-family: var(--exp-display);
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--exp-text-primary);
    margin: 0 0 1.5rem 0;
    letter-spacing: -0.01em;
}

.expense-comparison-chart-container {
    height: 400px;
    position: relative;
}

/* Responsive Comparison */
@media (max-width: 768px) {
    .expense-comparison-container {
        padding: 1.5rem;
    }

    .expense-comparison-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 1.5rem;
    }

    .expense-comparison-summary {
        width: 100%;
    }

    .expense-comparison-grid {
        grid-template-columns: 1fr;
    }

    .expense-comparison-chart-container {
        height: 300px;
    }
}

@media print {
    .expense-header .expense-actions,
    .action-button,
    .module-action-btn {
        display: none;
    }

    .expense-structure-container {
        background: white;
    }

    .metric-card,
    .expense-chart-card,
    .expense-key-insight {
        border: 1px solid #d1d5db;
        page-break-inside: avoid;
    }
}

/* ===================================================================
   ACCESSIBILITY
   =================================================================== */

.action-button:focus,
.module-action-btn:focus {
    outline: 2px solid var(--exp-accent);
    outline-offset: 2px;
}