/* ============================================
   INFINITY OS - CARD COMPONENTS
   Glassmorphic Cards & Metrics
   ============================================ */

/* ============================================
   BASE CARD STYLES
   ============================================ */

.infinity-card {
    position: relative;
    overflow: hidden;
    background: linear-gradient(180deg, rgba(6, 8, 16, 0.95) 0%, rgba(2, 4, 10, 0.92) 100%);
    backdrop-filter: blur(var(--blur-md));
    border: 1px solid rgba(255, 255, 255, 0.09);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    box-shadow: var(--depth-shadow-2);
    transition: transform var(--transition-base), border-color var(--transition-fast), box-shadow var(--transition-fast), background var(--transition-fast);
}

.infinity-card::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at top right, rgba(0, 240, 255, 0.12), transparent 42%);
    opacity: 0.9;
    pointer-events: none;
}

.infinity-card::after {
    content: '';
    position: absolute;
    inset: 1px;
    border-radius: calc(var(--radius-lg) - 1px);
    border: 1px solid rgba(255, 255, 255, 0.03);
    pointer-events: none;
}

.infinity-card:hover {
    background: linear-gradient(180deg, rgba(8, 12, 22, 0.97) 0%, rgba(4, 8, 16, 0.95) 100%);
    border-color: rgba(0, 240, 255, 0.2);
    box-shadow: var(--depth-shadow-3), 0 0 24px rgba(0, 240, 255, 0.09);
    transform: translateY(-4px);
}

.surface-panel,
.content-card,
.info-card,
.summary-card {
    position: relative;
    overflow: hidden;
    background: linear-gradient(180deg, rgba(4, 7, 15, 0.93) 0%, rgba(2, 4, 10, 0.88) 100%);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: calc(var(--radius-lg) + 2px);
    box-shadow: var(--depth-shadow-2);
    transition: transform var(--transition-base), border-color var(--transition-fast), box-shadow var(--transition-fast), background var(--transition-fast);
}

.surface-panel::before,
.content-card::before,
.info-card::before,
.summary-card::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(140deg, rgba(255, 255, 255, 0.05), transparent 32%, rgba(0, 240, 255, 0.08) 100%);
    opacity: 0.8;
    pointer-events: none;
}

.surface-panel:hover,
.content-card:hover,
.info-card:hover,
.summary-card:hover {
    border-color: rgba(0, 240, 255, 0.16);
    box-shadow: var(--depth-shadow-3), 0 0 24px rgba(0, 240, 255, 0.08);
    transform: translateY(-3px);
}

.surface-panel {
    padding: var(--space-xl);
}

.surface-panel--soft {
    background: linear-gradient(180deg, rgba(4, 7, 15, 0.84) 0%, rgba(2, 4, 10, 0.80) 100%);
    box-shadow: var(--depth-shadow-1);
}

.surface-panel--hero {
    background: linear-gradient(135deg, rgba(6, 10, 18, 0.96) 0%, rgba(8, 14, 24, 0.94) 52%, rgba(5, 8, 16, 0.92) 100%);
    border-color: rgba(0, 240, 255, 0.14);
    box-shadow: var(--depth-shadow-4), inset 0 1px 0 rgba(255, 255, 255, 0.04);
}

.surface-panel--hero::before {
    background: radial-gradient(circle at top left, rgba(255, 0, 170, 0.14), transparent 34%), radial-gradient(circle at top right, rgba(0, 240, 255, 0.12), transparent 38%);
}

.surface-panel--accent::before {
    background: radial-gradient(circle at top right, rgba(0, 240, 255, 0.16), transparent 36%), linear-gradient(180deg, rgba(255, 255, 255, 0.04), transparent 55%);
}

.surface-panel--stacked,
.content-card,
.info-card {
    padding: var(--space-xl);
}

.surface-stack {
    display: flex;
    flex-direction: column;
    gap: var(--space-lg);
}

.surface-grid {
    display: grid;
    gap: var(--space-lg);
}

.surface-grid--summary,
.summary-cards-grid {
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}

.summary-card {
    display: flex;
    align-items: center;
    gap: var(--space-lg);
    padding: var(--space-xl);
}

.summary-icon {
    position: relative;
    z-index: 1;
    width: 3.5rem;
    height: 3.5rem;
    border-radius: var(--radius-lg);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.06);
    color: var(--portal-accent, var(--neon-cyan));
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.08), 0 18px 32px rgba(2, 6, 23, 0.24);
}

.summary-content,
.surface-stat {
    position: relative;
    z-index: 1;
    display: flex;
    flex-direction: column;
    gap: var(--space-xs);
}

.summary-label,
.surface-stat__label {
    font-size: 0.8125rem;
    font-weight: 600;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--text-tertiary);
}

.summary-value,
.surface-stat__value {
    font-size: clamp(1.8rem, 3vw, 2.75rem);
    line-height: 1;
    font-weight: 700;
    color: var(--text-primary);
}

.surface-stat__meta {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.page-header--surface {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: var(--space-lg);
    padding: clamp(var(--space-lg), 3vw, var(--space-2xl));
    margin-bottom: var(--space-xl);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: calc(var(--radius-xl) + 2px);
    background: linear-gradient(135deg, rgba(14, 20, 34, 0.96) 0%, rgba(22, 29, 46, 0.92) 58%, rgba(11, 15, 25, 0.9) 100%);
    box-shadow: var(--depth-shadow-3);
    position: relative;
    overflow: hidden;
}

.page-header--surface::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at top right, rgba(0, 240, 255, 0.14), transparent 36%), radial-gradient(circle at left center, rgba(255, 0, 170, 0.1), transparent 28%);
    pointer-events: none;
}

.page-header--surface .header-content,
.page-header--surface > div:first-child {
    position: relative;
    z-index: 1;
    flex: 1;
    min-width: 0;
}

.page-title,
.page-header--surface h1 {
    margin: 0;
    font-size: clamp(1.9rem, 4vw, 2.65rem);
    line-height: 1.05;
    color: var(--text-primary);
}

.page-subtitle {
    margin: var(--space-sm) 0 0;
    max-width: 46rem;
    font-size: 0.95rem;
    line-height: 1.7;
    color: var(--text-secondary);
}

.page-actions,
.header-actions {
    position: relative;
    z-index: 1;
    display: flex;
    align-items: center;
    justify-content: flex-end;
    flex-wrap: wrap;
    gap: var(--space-sm);
}

.card-subtitle {
    font-size: 0.8125rem;
    color: var(--text-tertiary);
}

.info-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--space-lg);
}

.info-item {
    position: relative;
    z-index: 1;
    display: flex;
    flex-direction: column;
    gap: var(--space-xs);
    padding: var(--space-md);
    border-radius: var(--radius-md);
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.06);
}

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

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

.section-title-row {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: var(--space-md);
}

.table-meta,
.table-note {
    margin: 0;
    font-size: 0.8125rem;
    line-height: 1.6;
    color: var(--text-secondary);
}

.table-actions {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-xs);
}

.card-header {
    position: relative;
    z-index: 1;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-md);
    flex-wrap: wrap;
    margin-bottom: var(--space-lg);
    padding-bottom: var(--space-md);
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.card-title {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-primary);
}

.card-actions {
    display: flex;
    gap: var(--space-sm);
}

.card-body {
    position: relative;
    z-index: 1;
    color: var(--text-secondary);
}

.card-footer {
    position: relative;
    z-index: 1;
    margin-top: var(--space-lg);
    padding-top: var(--space-md);
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

/* ============================================
   METRIC CARDS
   ============================================ */

.metric-card {
    background: var(--glass-bg);
    backdrop-filter: blur(var(--blur-md));
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    display: flex;
    align-items: center;
    gap: var(--space-lg);
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
    box-shadow: var(--depth-shadow-1);
}

.metric-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, transparent 0%, rgba(0, 240, 255, 0.05) 100%);
    opacity: 0;
    transition: opacity var(--transition-base);
}

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

.metric-card:hover {
    border-color: rgba(0, 240, 255, 0.3);
    box-shadow: var(--depth-shadow-2), 0 0 20px rgba(0, 240, 255, 0.12);
}

/* ============================================
   DEPTH TIERS - SURFACES
   ============================================ */

.surface-depth-1 {
    box-shadow: var(--depth-shadow-1);
    border-color: var(--depth-border-soft);
}

.surface-depth-2 {
    box-shadow: var(--depth-shadow-2);
    border-color: var(--depth-border-soft);
}

.surface-depth-3 {
    box-shadow: var(--depth-shadow-3);
    border-color: var(--depth-border-strong);
}

.surface-depth-hero {
    box-shadow: var(--depth-shadow-4), 0 0 30px rgba(0, 240, 255, 0.12);
    border-color: rgba(0, 240, 255, 0.2);
}

.surface-hover-float {
    transition: transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-fast);
}

.surface-hover-float:hover {
    transform: translateY(-4px);
}

.surface-work {
    background: linear-gradient(180deg, rgba(5, 8, 16, 0.90) 0%, rgba(3, 5, 12, 0.88) 100%);
    border-color: rgba(255, 255, 255, 0.08);
}

.surface-hero {
    background: linear-gradient(135deg, rgba(6, 10, 18, 0.96) 0%, rgba(8, 14, 24, 0.94) 55%, rgba(5, 8, 16, 0.93) 100%);
    border-color: rgba(0, 240, 255, 0.14);
}

.surface-restraint {
    box-shadow: var(--depth-shadow-1);
}

.metric-icon {
    width: 56px;
    height: 56px;
    border-radius: var(--radius-md);
    background: rgba(0, 240, 255, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--neon-cyan);
    flex-shrink: 0;
}

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

.metric-content {
    flex: 1;
}

.metric-label {
    font-size: 0.875rem;
    color: var(--text-tertiary);
    margin-bottom: var(--space-xs);
}

.metric-value {
    font-size: 2rem;
    font-weight: 700;
    color: var(--text-primary);
    line-height: 1;
}

.metric-change {
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
    margin-top: var(--space-sm);
    font-size: 0.875rem;
    font-weight: 600;
    padding: 2px 8px;
    border-radius: var(--radius-sm);
}

.metric-change.positive {
    color: var(--neon-green);
    background: rgba(0, 255, 136, 0.1);
}

.metric-change.negative {
    color: var(--neon-magenta);
    background: rgba(255, 0, 170, 0.1);
}

/* ============================================
   CHART CARDS
   ============================================ */

.chart-card {
    background: var(--glass-bg);
    backdrop-filter: blur(var(--blur-md));
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
}

.chart-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--space-lg);
}

.chart-title {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-primary);
}

.chart-filters {
    display: flex;
    gap: var(--space-sm);
}

.chart-container {
    position: relative;
    width: 100%;
    min-height: 300px;
}

.chart-legend {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-md);
    margin-top: var(--space-lg);
    padding-top: var(--space-md);
    border-top: 1px solid var(--glass-border);
}

/* ============================================
   CARD VARIANTS
   ============================================ */

.infinity-card.card-accent-cyan {
    border-left: 3px solid var(--neon-cyan);
}

.infinity-card.card-accent-magenta {
    border-left: 3px solid var(--neon-magenta);
}

.infinity-card.card-accent-green {
    border-left: 3px solid var(--neon-green);
}

.infinity-card.card-highlight {
    background: linear-gradient(135deg, 
        rgba(0, 240, 255, 0.05) 0%, 
        rgba(255, 0, 170, 0.05) 100%);
    border-color: rgba(0, 240, 255, 0.3);
}

/* ============================================
   CARD GRID LAYOUTS
   ============================================ */

.card-grid {
    display: grid;
    gap: var(--space-lg);
}

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

.card-grid-3 {
    grid-template-columns: repeat(3, 1fr);
}

.card-grid-4 {
    grid-template-columns: repeat(4, 1fr);
}

@media (max-width: 1024px) {
    .page-header--surface {
        align-items: stretch;
    }

    .card-grid-4 {
        grid-template-columns: repeat(2, 1fr);
    }
    .card-grid-3 {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 640px) {
    .surface-panel,
    .content-card,
    .info-card,
    .summary-card {
        padding: var(--space-lg);
    }

    .page-header--surface {
        padding: var(--space-lg);
    }

    .page-actions,
    .header-actions {
        justify-content: stretch;
    }

    .page-actions > *,
    .header-actions > * {
        width: 100%;
    }

    .card-grid-2,
    .card-grid-3,
    .card-grid-4 {
        grid-template-columns: 1fr;
    }
}

/* ============================================
   PHASE 4 — CARD NOTICE MODIFIER
   Shared info/contextual card accent
   ============================================ */

/* Default: info/cyan tone */
.card-notice {
    background: rgba(0, 240, 255, 0.05);
    border-color: rgba(0, 240, 255, 0.2);
    border-left: 3px solid var(--neon-cyan);
}

.card-notice--warning {
    background: rgba(251, 146, 60, 0.05);
    border-color: rgba(251, 146, 60, 0.2);
    border-left: 3px solid var(--neon-orange);
}

.card-notice--success {
    background: rgba(0, 255, 136, 0.05);
    border-color: rgba(0, 255, 136, 0.2);
    border-left: 3px solid var(--neon-green);
}

.card-notice--neutral {
    background: rgba(255, 255, 255, 0.02);
    border-color: var(--border-color);
    border-left: 3px solid rgba(255, 255, 255, 0.2);
}

/* ============================================
   PHASE 4 — CONTENT STACK & PAGE RHYTHM
   Consistent vertical spacing containers
   ============================================ */

.content-stack {
    display: flex;
    flex-direction: column;
    gap: var(--space-xl);
}

.content-stack--sm {
    gap: var(--space-lg);
}

.content-stack--lg {
    gap: var(--space-2xl);
}

/* Page section rhythm wrapper */
.page-section {
    margin-bottom: var(--space-xl);
}

.page-section:last-child {
    margin-bottom: 0;
}

/* ============================================
   PHASE 4 — FILTER CONTROLS
   Consistent filter bar / search form pattern
   ============================================ */

.filter-controls {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: var(--space-md);
    margin-bottom: var(--space-xl);
    padding: var(--space-md) var(--space-lg);
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
}

.filter-group {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.filter-label {
    font-size: 0.8125rem;
    font-weight: 600;
    color: var(--text-tertiary);
    white-space: nowrap;
}

/* ============================================
   PHASE 4 — ACTIVITY FEED
   Timeline-style activity list
   ============================================ */

.activity-feed {
    display: flex;
    flex-direction: column;
    gap: 0;
}

.activity-item {
    display: flex;
    gap: var(--space-md);
    padding: var(--space-md) 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    position: relative;
}

.activity-item:last-child {
    border-bottom: none;
}

.activity-icon {
    flex-shrink: 0;
    width: 2rem;
    height: 2rem;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0, 240, 255, 0.06);
    border: 1px solid rgba(0, 240, 255, 0.12);
    border-radius: 50%;
    font-size: 0.875rem;
    color: var(--neon-cyan);
}

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

.activity-title {
    font-size: 0.9375rem;
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: var(--space-xs);
}

.activity-meta {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-md);
    font-size: 0.8125rem;
    color: var(--text-tertiary);
}

.activity-user {
    color: var(--text-secondary);
}

.activity-time {
    color: var(--text-tertiary);
}

/* ============================================
   PHASE 4 — SECTION HEADING WITHIN CARDS
   Sub-section labels and dividers
   ============================================ */

.section-label {
    display: block;
    font-size: 0.6875rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--text-tertiary);
    margin-bottom: var(--space-sm);
}

.section-divider {
    border: none;
    border-top: 1px solid rgba(255, 255, 255, 0.07);
    margin: var(--space-lg) 0;
}

/* Data key-value row */
.data-row {
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    gap: var(--space-sm);
    padding: var(--space-xs) 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.04);
}

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

.data-key {
    font-size: 0.875rem;
    color: var(--text-secondary);
    min-width: 0;
}

.data-value {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-primary);
    text-align: right;
}

/* ============================================
   PHASE 5 — FLOATING SURFACE DEPTH REFINEMENTS
   Shadow layering, glow edge consistency, card elevation hierarchy
   ============================================ */

/* Surface depth variants with glow edge consistency */
.surface-depth-1 {
    box-shadow:
        var(--depth-shadow-1),
        inset 0 1px 0 rgba(255, 255, 255, 0.04);
}

.surface-depth-2 {
    box-shadow:
        var(--depth-shadow-2),
        inset 0 1px 0 rgba(255, 255, 255, 0.05);
}

.surface-depth-3 {
    box-shadow:
        var(--depth-shadow-3),
        0 0 0 1px rgba(0, 240, 255, 0.07),
        inset 0 1px 0 rgba(255, 255, 255, 0.06);
}

.surface-depth-hero {
    box-shadow:
        var(--depth-shadow-4),
        0 0 0 1px rgba(0, 240, 255, 0.10),
        0 0 40px rgba(0, 240, 255, 0.08),
        inset 0 1px 0 rgba(255, 255, 255, 0.07);
}

/* Floating card — panel that reads as elevated */
.surface-float {
    box-shadow:
        0 4px 16px rgba(0, 0, 0, 0.22),
        0 1px 4px rgba(0, 0, 0, 0.14),
        inset 0 1px 0 rgba(255, 255, 255, 0.05);
    transition:
        box-shadow 260ms cubic-bezier(0.34, 1.4, 0.64, 1),
        transform 260ms cubic-bezier(0.34, 1.4, 0.64, 1);
}

.surface-float:hover {
    box-shadow:
        0 10px 32px rgba(0, 0, 0, 0.30),
        0 2px 8px rgba(0, 0, 0, 0.18),
        0 0 0 1px rgba(0, 240, 255, 0.09),
        inset 0 1px 0 rgba(255, 255, 255, 0.06);
    transform: translateY(-3px);
}

/* Glow edge — consistent neon border edge per portal accent */
.surface-glow-edge {
    box-shadow:
        var(--depth-shadow-2),
        0 0 0 1px rgba(0, 240, 255, 0.14),
        0 0 20px rgba(0, 240, 255, 0.06);
}

.surface-glow-edge--magenta {
    box-shadow:
        var(--depth-shadow-2),
        0 0 0 1px rgba(255, 0, 170, 0.14),
        0 0 20px rgba(255, 0, 170, 0.06);
}

.surface-glow-edge--green {
    box-shadow:
        var(--depth-shadow-2),
        0 0 0 1px rgba(0, 255, 136, 0.14),
        0 0 20px rgba(0, 255, 136, 0.06);
}

/* Card elevation classes (for explicit hierarchy) */
.elevation-0 {
    box-shadow: none;
    border: 1px solid rgba(255, 255, 255, 0.04);
}

.elevation-1 {
    box-shadow: var(--depth-shadow-1), inset 0 1px 0 rgba(255, 255, 255, 0.04);
}

.elevation-2 {
    box-shadow: var(--depth-shadow-2), inset 0 1px 0 rgba(255, 255, 255, 0.05);
}

.elevation-3 {
    box-shadow:
        var(--depth-shadow-3),
        0 0 0 1px rgba(0, 240, 255, 0.06),
        inset 0 1px 0 rgba(255, 255, 255, 0.06);
}

.elevation-4 {
    box-shadow:
        var(--depth-shadow-4),
        0 0 0 1px rgba(0, 240, 255, 0.09),
        0 0 30px rgba(0, 240, 255, 0.07),
        inset 0 1px 0 rgba(255, 255, 255, 0.07);
}

/* --- Info card hover state (with float + glow edge) --- */
.info-card:hover,
.infinity-card:hover {
    border-color: rgba(0, 240, 255, 0.18);
}

/* Card with top accent bar — use color-stop precision */
.infinity-card .card-header {
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

/* Card notice glow depth (Phase 5 tuning) */
.card-notice {
    box-shadow:
        inset 0 0 0 1px rgba(0, 240, 255, 0.14),
        0 4px 16px rgba(0, 0, 0, 0.16);
}

.card-notice--warning {
    box-shadow:
        inset 0 0 0 1px rgba(251, 146, 60, 0.18),
        0 4px 16px rgba(0, 0, 0, 0.16);
}

.card-notice--success {
    box-shadow:
        inset 0 0 0 1px rgba(0, 255, 136, 0.16),
        0 4px 16px rgba(0, 0, 0, 0.16);
}

/* ============================================
   DIMENSIONAL DEPTH TIER SYSTEM
   Three visual elevation tiers for the
   floating command environment UI.

   Tier 1 — Hero / Command (payroll card, primary KPI)
   Tier 2 — Standard panels (charts, activity, signals)
   Tier 3 — Utility panels (export, validation, status)
   ============================================ */

/* --- Tier 1: Hero surfaces ------------------------------------------ */
/*  Strongest glow ring + external bloom. Reads as the primary
    floating object in the environment.                                  */

.card-tier-1 {
    border-color: rgba(0, 240, 255, 0.15);
    box-shadow:
        var(--depth-shadow-4),
        0 0 0 1px rgba(0, 240, 255, 0.10),
        0 0 40px rgba(0, 240, 255, 0.06),
        inset 0 1px 0 rgba(255, 255, 255, 0.09);
}

/* Richer dual-color bloom — overrides .infinity-card::before gradient */
.card-tier-1::before {
    background:
        radial-gradient(circle at top right, rgba(0, 240, 255, 0.13), transparent 42%),
        radial-gradient(circle at bottom left, rgba(255, 0, 170, 0.07), transparent 44%),
        linear-gradient(180deg, rgba(255, 255, 255, 0.04) 0%, transparent 58%);
    opacity: 1;
}

.card-tier-1:hover {
    border-color: rgba(0, 240, 255, 0.22);
    box-shadow:
        var(--depth-shadow-4),
        0 0 0 1px rgba(0, 240, 255, 0.15),
        0 0 52px rgba(0, 240, 255, 0.09),
        inset 0 1px 0 rgba(255, 255, 255, 0.11);
    transform: translateY(-4px);
}

/* --- Tier 2: Standard panels ---------------------------------------- */
/*  Clear elevation above the background but below hero cards.
    Charts, activity feeds, operational signals.                         */

.card-tier-2 {
    border-color: rgba(255, 255, 255, 0.09);
    box-shadow:
        var(--depth-shadow-3),
        inset 0 1px 0 rgba(255, 255, 255, 0.05);
}

.card-tier-2:hover {
    border-color: rgba(0, 240, 255, 0.15);
    box-shadow:
        var(--depth-shadow-3),
        0 0 32px rgba(0, 240, 255, 0.09),
        inset 0 1px 0 rgba(255, 255, 255, 0.07);
    transform: translateY(-3px);
}

/* --- Tier 3: Utility panels ----------------------------------------- */
/*  Minimal shadow — reads as embedded/tool surfaces.
    Export controls, validation panels, system status.                   */

.card-tier-3 {
    border-color: rgba(255, 255, 255, 0.06);
    box-shadow:
        var(--depth-shadow-1),
        inset 0 1px 0 rgba(255, 255, 255, 0.03);
}

.card-tier-3:hover {
    border-color: rgba(255, 255, 255, 0.10);
    box-shadow:
        var(--depth-shadow-2),
        inset 0 1px 0 rgba(255, 255, 255, 0.04);
    transform: translateY(-2px);
}

@media (prefers-reduced-motion: reduce) {
    .card-tier-1:hover,
    .card-tier-2:hover,
    .card-tier-3:hover {
        transform: none;
    }
}

/* ============================================
   CARD HEADER — ACCENT TOP BAR PATTERN
   Use .card-header inside any card variant for
   a structured header with optional accent rule.
   ============================================ */

.card-panel-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-bottom: var(--space-md);
    margin-bottom: var(--space-lg);
    border-bottom: 1px solid rgba(255, 255, 255, 0.07);
    position: relative;
}

/* Accent underline — glows in the portal accent colour */
.card-panel-header::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: -1px;
    width: 40px;
    height: 2px;
    background: var(--portal-accent, var(--neon-cyan));
    border-radius: 2px;
    box-shadow: 0 0 8px var(--portal-accent, var(--neon-cyan));
    opacity: 0.75;
}

.card-panel-title {
    font-size: 0.9375rem;
    font-weight: 600;
    color: var(--text-primary);
    letter-spacing: 0.01em;
    line-height: 1.2;
}

.card-panel-kicker {
    font-size: 0.6875rem;
    font-weight: 700;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--portal-accent, var(--neon-cyan));
    opacity: 0.75;
    margin-bottom: 3px;
}

.card-panel-actions {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    flex-shrink: 0;
}

/* ============================================
   EMPTY STATE — POLISHED INTENTIONAL BLANK
   Use .empty-state inside a card or list
   container when no data is available.
   ============================================ */

.empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: var(--space-2xl) var(--space-xl);
    gap: var(--space-md);
    position: relative;
}

.empty-state-icon {
    width: 52px;
    height: 52px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid rgba(255, 255, 255, 0.08);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-tertiary);
    margin-bottom: var(--space-xs);
    position: relative;
}

/* Soft halo behind icon */
.empty-state-icon::before {
    content: '';
    position: absolute;
    inset: -8px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(0, 240, 255, 0.06) 0%, transparent 72%);
    pointer-events: none;
}

.empty-state-title {
    font-size: 0.9375rem;
    font-weight: 600;
    color: var(--text-secondary);
    margin: 0;
}

.empty-state-desc {
    font-size: 0.8125rem;
    color: var(--text-tertiary);
    max-width: 280px;
    line-height: 1.55;
    margin: 0;
}

.empty-state-action {
    margin-top: var(--space-sm);
}

/* Compact variant — for inline use inside smaller panels */
.empty-state--compact {
    padding: var(--space-xl) var(--space-lg);
    gap: var(--space-sm);
}

.empty-state--compact .empty-state-icon {
    width: 36px;
    height: 36px;
}

.empty-state--compact .empty-state-title {
    font-size: 0.875rem;
}

/* ============================================
   METRIC CARD — TREND BADGE
   Replaces the raw .metric-change class with
   a more polished pill including an arrow icon.
   ============================================ */

.metric-trend {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    margin-top: var(--space-sm);
    font-size: 0.8125rem;
    font-weight: 600;
    padding: 3px 9px;
    border-radius: 20px;
    line-height: 1;
}

.metric-trend svg {
    flex-shrink: 0;
}

.metric-trend--up {
    color: var(--neon-green);
    background: rgba(0, 255, 136, 0.10);
    border: 1px solid rgba(0, 255, 136, 0.18);
}

.metric-trend--down {
    color: var(--neon-magenta);
    background: rgba(255, 0, 170, 0.10);
    border: 1px solid rgba(255, 0, 170, 0.18);
}

.metric-trend--neutral {
    color: var(--text-tertiary);
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
}