/* ============================================================================
   ENSOLVIA DESIGN SYSTEM v1.0
   "The Solution is Within"

   Brand identity:
     Logo — Open book (knowledge) + gear (engineering) + lightbulb (insight)
     Palette — Deep navy authority, gold accent for discovery/solution
     Personality — Technical, industrial-strength, confident, data-driven

   Professional render standard for all Ensolvia applications:
   BaselineIQ | LPEMS | Mining Production Modeler | RCA App

   Usage: @import url('./ensolvia-design-system.css');
   Or link: <link rel="stylesheet" href="/shared/ensolvia-design-system.css">
   ============================================================================ */

/* ---------------------------------------------------------------------------
   1. DESIGN TOKENS (CSS Custom Properties)
   --------------------------------------------------------------------------- */
:root {
    /* --- Brand Colors --- */
    --ens-navy:         #1a2744;     /* Primary - from logo, deep navy */
    --ens-navy-light:   #243352;     /* Hover/active states */
    --ens-navy-dark:    #111b30;     /* Darker variant */
    --ens-slate:        #2d3f5e;     /* Secondary navy */

    --ens-accent:       #c9982e;     /* Gold accent - lightbulb in logo */
    --ens-accent-light: #e0b94f;     /* Hover gold */
    --ens-accent-muted: rgba(201, 152, 46, 0.15); /* Gold tint for backgrounds */

    --ens-steel:        #64748b;     /* Industrial mid-tone */
    --ens-steel-light:  #94a3b8;     /* Lighter steel */

    /* --- Semantic Status --- */
    --ens-success:      #10b981;     /* On Track / Good */
    --ens-success-bg:   #d1fae5;
    --ens-warning:      #f59e0b;     /* Caution / Fair */
    --ens-warning-bg:   #fef3c7;
    --ens-danger:       #dc2626;     /* Critical / At Risk */
    --ens-danger-bg:    #fecaca;
    --ens-info:         #2563eb;     /* Informational / Active */
    --ens-info-bg:      #dbeafe;

    /* --- Surface & Background --- */
    --ens-bg:           #ffffff;
    --ens-bg-subtle:    #f8fafc;     /* Cards, panels */
    --ens-bg-muted:     #f1f5f9;     /* Deeper recessed areas */
    --ens-bg-dark:      #1a2744;     /* Dark panels, nav */
    --ens-bg-dark-alt:  #0f172a;     /* Darkest surfaces */

    /* --- Text --- */
    --ens-text:         #1e293b;     /* Primary body text */
    --ens-text-strong:  #0f172a;     /* Headings, emphasis */
    --ens-text-muted:   #64748b;     /* Secondary, labels */
    --ens-text-faint:   #94a3b8;     /* Placeholders, disabled */
    --ens-text-inverse: #f1f5f9;     /* Text on dark bg */
    --ens-text-accent:  #c9982e;     /* Gold text highlights */

    /* --- Borders --- */
    --ens-border:       #e2e8f0;     /* Default border */
    --ens-border-strong:#cbd5e1;     /* Emphasized borders */
    --ens-border-subtle:#f1f5f9;     /* Subtle dividers */
    --ens-border-accent:#c9982e;     /* Gold accent border */

    /* --- Typography --- */
    --ens-font:         'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --ens-font-heading: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --ens-font-mono:    'JetBrains Mono', 'Fira Code', 'Cascadia Code', 'Consolas', monospace;

    --ens-text-xs:      0.7rem;      /* Labels, badges */
    --ens-text-sm:      0.8rem;      /* Secondary text, table cells */
    --ens-text-base:    0.9rem;      /* Body text */
    --ens-text-md:      1rem;        /* Slightly larger body */
    --ens-text-lg:      1.15rem;     /* Section intros */
    --ens-text-xl:      1.4rem;      /* Subheadings */
    --ens-text-2xl:     1.8rem;      /* Page headings */
    --ens-text-3xl:     2.2rem;      /* Hero / report titles */

    /* --- Spacing --- */
    --ens-space-xs:     4px;
    --ens-space-sm:     8px;
    --ens-space-md:     12px;
    --ens-space-lg:     16px;
    --ens-space-xl:     24px;
    --ens-space-2xl:    32px;
    --ens-space-3xl:    48px;

    /* --- Radius (sharp-ish for techi/tough feel) --- */
    --ens-radius-sm:    4px;
    --ens-radius:       6px;
    --ens-radius-lg:    8px;
    --ens-radius-xl:    12px;

    /* --- Shadows --- */
    --ens-shadow-sm:    0 1px 2px rgba(0, 0, 0, 0.05);
    --ens-shadow:       0 1px 4px rgba(0, 0, 0, 0.06), 0 2px 8px rgba(0, 0, 0, 0.04);
    --ens-shadow-md:    0 4px 12px rgba(0, 0, 0, 0.08), 0 1px 3px rgba(0, 0, 0, 0.05);
    --ens-shadow-lg:    0 8px 30px rgba(0, 0, 0, 0.12);
    --ens-shadow-glow:  0 0 20px rgba(201, 152, 46, 0.15);  /* Gold glow for focus */

    /* --- Transitions --- */
    --ens-transition:   150ms ease;
    --ens-transition-slow: 300ms ease;

    /* --- Z-index layers --- */
    --ens-z-dropdown:   100;
    --ens-z-sticky:     200;
    --ens-z-overlay:    300;
    --ens-z-modal:      400;
    --ens-z-toast:      500;
}


/* ---------------------------------------------------------------------------
   2. BASE RESET & TYPOGRAPHY
   --------------------------------------------------------------------------- */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body.ens {
    font-family: var(--ens-font);
    font-size: var(--ens-text-base);
    line-height: 1.6;
    color: var(--ens-text);
    background: var(--ens-bg);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Headings — bold, tight, industrial */
.ens h1, .ens h2, .ens h3, .ens h4, .ens h5, .ens h6,
.ens-h1, .ens-h2, .ens-h3, .ens-h4 {
    font-family: var(--ens-font-heading);
    color: var(--ens-text-strong);
    line-height: 1.25;
    letter-spacing: -0.01em;
    font-weight: 700;
}

.ens h1, .ens-h1 {
    font-size: var(--ens-text-3xl);
    letter-spacing: -0.02em;
}
.ens h2, .ens-h2 {
    font-size: var(--ens-text-2xl);
    letter-spacing: -0.015em;
}
.ens h3, .ens-h3 {
    font-size: var(--ens-text-xl);
}
.ens h4, .ens-h4 {
    font-size: var(--ens-text-md);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--ens-text-muted);
}

/* Monospace accent — for data, codes, metrics */
.ens-mono {
    font-family: var(--ens-font-mono);
    font-size: 0.9em;
    letter-spacing: -0.02em;
}

/* Gold accent text */
.ens-accent {
    color: var(--ens-accent);
}

/* Muted secondary text */
.ens-muted {
    color: var(--ens-text-muted);
    font-size: var(--ens-text-sm);
}


/* ---------------------------------------------------------------------------
   3. LAYOUT: APP SHELL
   --------------------------------------------------------------------------- */

/* Top navigation bar */
.ens-topbar {
    background: var(--ens-bg-dark);
    color: var(--ens-text-inverse);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 var(--ens-space-xl);
    height: 56px;
    position: sticky;
    top: 0;
    z-index: var(--ens-z-sticky);
    border-bottom: 2px solid var(--ens-accent);
}

.ens-topbar-brand {
    display: flex;
    align-items: center;
    gap: var(--ens-space-md);
    text-decoration: none;
    color: var(--ens-text-inverse);
}

.ens-topbar-brand img {
    height: 32px;
}

.ens-topbar-brand .ens-app-name {
    font-size: var(--ens-text-md);
    font-weight: 600;
    letter-spacing: 0.02em;
    color: var(--ens-text-inverse);
    opacity: 0.9;
}

.ens-topbar-brand .ens-app-name::before {
    content: '|';
    margin-right: var(--ens-space-md);
    opacity: 0.3;
    font-weight: 300;
}

.ens-topbar-actions {
    display: flex;
    align-items: center;
    gap: var(--ens-space-md);
}

/* Secondary tab navigation */
.ens-tabnav {
    background: var(--ens-bg);
    border-bottom: 1px solid var(--ens-border);
    display: flex;
    gap: 0;
    padding: 0 var(--ens-space-xl);
    position: sticky;
    top: 56px;
    z-index: calc(var(--ens-z-sticky) - 1);
}

.ens-tab {
    padding: var(--ens-space-md) var(--ens-space-lg);
    font-size: var(--ens-text-sm);
    font-weight: 500;
    color: var(--ens-text-muted);
    text-decoration: none;
    border-bottom: 2px solid transparent;
    cursor: pointer;
    transition: color var(--ens-transition), border-color var(--ens-transition);
    white-space: nowrap;
}

.ens-tab:hover {
    color: var(--ens-text);
}

.ens-tab.active {
    color: var(--ens-navy);
    border-bottom-color: var(--ens-accent);
    font-weight: 600;
}

.ens-tab-divider {
    width: 1px;
    background: var(--ens-border);
    margin: 10px 4px;
    align-self: stretch;
}

/* Main content area */
.ens-main {
    max-width: 1280px;
    margin: 0 auto;
    padding: var(--ens-space-xl) var(--ens-space-2xl);
}

.ens-main-wide {
    max-width: 1440px;
    margin: 0 auto;
    padding: var(--ens-space-xl) var(--ens-space-2xl);
}


/* ---------------------------------------------------------------------------
   4. CARDS & PANELS
   --------------------------------------------------------------------------- */

.ens-card {
    background: var(--ens-bg);
    border: 1px solid var(--ens-border);
    border-radius: var(--ens-radius-lg);
    padding: var(--ens-space-xl);
    box-shadow: var(--ens-shadow-sm);
    transition: box-shadow var(--ens-transition);
}

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

.ens-card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--ens-space-lg);
    padding-bottom: var(--ens-space-md);
    border-bottom: 1px solid var(--ens-border-subtle);
}

.ens-card-title {
    font-size: var(--ens-text-md);
    font-weight: 600;
    color: var(--ens-text-strong);
}

/* Accent-bordered panel — "the solution is within" highlight */
.ens-panel-accent {
    background: var(--ens-bg);
    border: 1px solid var(--ens-border);
    border-left: 3px solid var(--ens-accent);
    border-radius: var(--ens-radius);
    padding: var(--ens-space-lg) var(--ens-space-xl);
}

/* Dark panel for metrics / hero sections */
.ens-panel-dark {
    background: var(--ens-bg-dark);
    color: var(--ens-text-inverse);
    border-radius: var(--ens-radius-lg);
    padding: var(--ens-space-xl);
    border: 1px solid var(--ens-slate);
}

/* KPI metric card */
.ens-kpi {
    background: var(--ens-bg-subtle);
    border: 1px solid var(--ens-border);
    border-radius: var(--ens-radius-lg);
    padding: var(--ens-space-lg);
    text-align: center;
}

.ens-kpi-label {
    font-size: var(--ens-text-xs);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--ens-text-muted);
    margin-bottom: var(--ens-space-xs);
}

.ens-kpi-value {
    font-family: var(--ens-font-mono);
    font-size: var(--ens-text-2xl);
    font-weight: 700;
    color: var(--ens-navy);
    line-height: 1.2;
}

.ens-kpi-unit {
    font-size: var(--ens-text-sm);
    color: var(--ens-text-muted);
    font-weight: 400;
}

/* KPI grid layout */
.ens-kpi-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: var(--ens-space-md);
}


/* ---------------------------------------------------------------------------
   5. BUTTONS
   --------------------------------------------------------------------------- */

.ens-btn {
    display: inline-flex;
    align-items: center;
    gap: var(--ens-space-sm);
    padding: 8px 18px;
    font-family: var(--ens-font);
    font-size: var(--ens-text-sm);
    font-weight: 600;
    border-radius: var(--ens-radius);
    border: 1px solid transparent;
    cursor: pointer;
    transition: all var(--ens-transition);
    text-decoration: none;
    white-space: nowrap;
    line-height: 1.4;
}

/* Primary — deep navy */
.ens-btn-primary {
    background: var(--ens-navy);
    color: var(--ens-text-inverse);
    border-color: var(--ens-navy);
}
.ens-btn-primary:hover {
    background: var(--ens-navy-light);
    box-shadow: var(--ens-shadow-md);
}

/* Accent — gold, for key CTAs */
.ens-btn-accent {
    background: var(--ens-accent);
    color: var(--ens-navy-dark);
    border-color: var(--ens-accent);
    font-weight: 700;
}
.ens-btn-accent:hover {
    background: var(--ens-accent-light);
    box-shadow: var(--ens-shadow-glow);
}

/* Secondary — outlined */
.ens-btn-secondary {
    background: var(--ens-bg);
    color: var(--ens-text);
    border-color: var(--ens-border-strong);
}
.ens-btn-secondary:hover {
    background: var(--ens-bg-subtle);
    border-color: var(--ens-navy);
    color: var(--ens-navy);
}

/* Danger — for destructive actions */
.ens-btn-danger {
    background: var(--ens-bg);
    color: var(--ens-danger);
    border-color: var(--ens-danger);
}
.ens-btn-danger:hover {
    background: var(--ens-danger);
    color: white;
}

/* Ghost — minimal, for toolbars */
.ens-btn-ghost {
    background: transparent;
    color: var(--ens-text-muted);
    border-color: transparent;
    padding: 6px 10px;
}
.ens-btn-ghost:hover {
    background: var(--ens-bg-muted);
    color: var(--ens-text);
}

/* Small variant */
.ens-btn-sm {
    padding: 4px 12px;
    font-size: var(--ens-text-xs);
}


/* ---------------------------------------------------------------------------
   6. TABLES — Industrial data grid feel
   --------------------------------------------------------------------------- */

.ens-table {
    width: 100%;
    border-collapse: collapse;
    font-size: var(--ens-text-sm);
}

.ens-table thead th {
    background: var(--ens-bg-muted);
    color: var(--ens-text-muted);
    font-size: var(--ens-text-xs);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    padding: 10px 14px;
    text-align: left;
    border-bottom: 2px solid var(--ens-border-strong);
    white-space: nowrap;
}

.ens-table tbody td {
    padding: 10px 14px;
    border-bottom: 1px solid var(--ens-border);
    color: var(--ens-text);
    vertical-align: middle;
}

.ens-table tbody tr:hover {
    background: var(--ens-accent-muted);
}

.ens-table tbody tr:last-child td {
    border-bottom: none;
}

/* Numeric cells — monospace right-aligned */
.ens-table .num {
    font-family: var(--ens-font-mono);
    text-align: right;
    font-variant-numeric: tabular-nums;
}

/* Compact table variant */
.ens-table-compact thead th {
    padding: 6px 10px;
}
.ens-table-compact tbody td {
    padding: 6px 10px;
    font-size: var(--ens-text-xs);
}

/* Striped rows variant */
.ens-table-striped tbody tr:nth-child(even) {
    background: var(--ens-bg-subtle);
}


/* ---------------------------------------------------------------------------
   7. BADGES & STATUS INDICATORS
   --------------------------------------------------------------------------- */

.ens-badge {
    display: inline-block;
    padding: 2px 10px;
    font-size: var(--ens-text-xs);
    font-weight: 600;
    border-radius: var(--ens-radius-sm);
    letter-spacing: 0.02em;
    text-transform: uppercase;
    line-height: 1.6;
}

.ens-badge-good, .ens-badge-low {
    background: var(--ens-success-bg);
    color: #065f46;
}
.ens-badge-fair, .ens-badge-medium {
    background: var(--ens-warning-bg);
    color: #92400e;
}
.ens-badge-risk, .ens-badge-high {
    background: #ffedd5;
    color: #9a3412;
}
.ens-badge-critical {
    background: var(--ens-danger-bg);
    color: #991b1b;
}
.ens-badge-info {
    background: var(--ens-info-bg);
    color: #1e40af;
}
.ens-badge-neutral {
    background: var(--ens-bg-muted);
    color: var(--ens-text-muted);
}

/* Dot indicator */
.ens-dot {
    display: inline-block;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    margin-right: 6px;
    vertical-align: middle;
}
.ens-dot-success { background: var(--ens-success); }
.ens-dot-warning { background: var(--ens-warning); }
.ens-dot-danger  { background: var(--ens-danger);  }
.ens-dot-info    { background: var(--ens-info);    }


/* ---------------------------------------------------------------------------
   8. FORMS & INPUTS
   --------------------------------------------------------------------------- */

.ens-input, .ens-select, .ens-textarea {
    font-family: var(--ens-font);
    font-size: var(--ens-text-sm);
    padding: 8px 12px;
    border: 1px solid var(--ens-border-strong);
    border-radius: var(--ens-radius);
    background: var(--ens-bg);
    color: var(--ens-text);
    transition: border-color var(--ens-transition), box-shadow var(--ens-transition);
    outline: none;
    width: 100%;
}

.ens-input:focus, .ens-select:focus, .ens-textarea:focus {
    border-color: var(--ens-accent);
    box-shadow: 0 0 0 3px var(--ens-accent-muted);
}

.ens-input::placeholder {
    color: var(--ens-text-faint);
}

.ens-label {
    display: block;
    font-size: var(--ens-text-xs);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--ens-text-muted);
    margin-bottom: var(--ens-space-xs);
}


/* ---------------------------------------------------------------------------
   9. SECTION HEADERS — Industrial divider pattern
   --------------------------------------------------------------------------- */

/* Standard section header with left accent */
.ens-section-title {
    font-size: var(--ens-text-xl);
    font-weight: 700;
    color: var(--ens-navy);
    padding-bottom: var(--ens-space-sm);
    margin-bottom: var(--ens-space-lg);
    border-bottom: 2px solid var(--ens-border);
    position: relative;
}

/* Gold accent underline (partial width) */
.ens-section-title::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 60px;
    height: 2px;
    background: var(--ens-accent);
}

/* Subtitle under section header */
.ens-section-subtitle {
    font-size: var(--ens-text-sm);
    color: var(--ens-text-muted);
    margin-top: -var(--ens-space-md);
    margin-bottom: var(--ens-space-lg);
}


/* ---------------------------------------------------------------------------
   10. TOAST NOTIFICATIONS
   --------------------------------------------------------------------------- */

.ens-toast {
    position: fixed;
    top: 72px;
    right: var(--ens-space-xl);
    z-index: var(--ens-z-toast);
    padding: var(--ens-space-md) var(--ens-space-xl);
    border-radius: var(--ens-radius);
    font-size: var(--ens-text-sm);
    font-weight: 500;
    box-shadow: var(--ens-shadow-lg);
    display: flex;
    align-items: center;
    gap: var(--ens-space-sm);
    animation: ens-slide-in 300ms ease;
}

.ens-toast-success {
    background: #065f46;
    color: white;
    border-left: 4px solid var(--ens-success);
}
.ens-toast-error {
    background: #991b1b;
    color: white;
    border-left: 4px solid var(--ens-danger);
}
.ens-toast-info {
    background: var(--ens-navy);
    color: var(--ens-text-inverse);
    border-left: 4px solid var(--ens-accent);
}

@keyframes ens-slide-in {
    from { transform: translateX(100%); opacity: 0; }
    to   { transform: translateX(0);    opacity: 1; }
}


/* ---------------------------------------------------------------------------
   11. CHART CONTAINERS
   --------------------------------------------------------------------------- */

.ens-chart-box {
    background: var(--ens-bg-subtle);
    border: 1px solid var(--ens-border);
    border-radius: var(--ens-radius-lg);
    padding: var(--ens-space-lg);
}

.ens-chart-box-title {
    font-size: var(--ens-text-sm);
    font-weight: 600;
    color: var(--ens-text-strong);
    margin-bottom: var(--ens-space-md);
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.ens-chart-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--ens-space-xl);
}

.ens-chart-full {
    grid-column: 1 / -1;
}


/* ---------------------------------------------------------------------------
   12. COLLAPSIBLE SECTIONS (for hierarchies / groups)
   --------------------------------------------------------------------------- */

.ens-collapse-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--ens-space-md) var(--ens-space-lg);
    background: var(--ens-bg-subtle);
    border: 1px solid var(--ens-border);
    border-radius: var(--ens-radius);
    cursor: pointer;
    user-select: none;
    transition: background var(--ens-transition);
}

.ens-collapse-header:hover {
    background: var(--ens-bg-muted);
}

.ens-collapse-header .ens-chevron {
    transition: transform var(--ens-transition);
    color: var(--ens-text-muted);
    font-size: 0.8em;
}

.ens-collapse-header[aria-expanded="true"] .ens-chevron {
    transform: rotate(90deg);
}

.ens-collapse-body {
    padding: var(--ens-space-lg);
    border: 1px solid var(--ens-border);
    border-top: none;
    border-radius: 0 0 var(--ens-radius) var(--ens-radius);
}


/* ---------------------------------------------------------------------------
   13. PROGRESS & LOADING
   --------------------------------------------------------------------------- */

.ens-progress {
    height: 6px;
    background: var(--ens-bg-muted);
    border-radius: 3px;
    overflow: hidden;
}

.ens-progress-bar {
    height: 100%;
    border-radius: 3px;
    background: var(--ens-navy);
    transition: width var(--ens-transition-slow);
}

.ens-progress-bar.accent {
    background: var(--ens-accent);
}

.ens-progress-bar.success {
    background: var(--ens-success);
}

/* Skeleton loader */
.ens-skeleton {
    background: linear-gradient(90deg, var(--ens-bg-muted) 25%, var(--ens-bg-subtle) 50%, var(--ens-bg-muted) 75%);
    background-size: 200% 100%;
    animation: ens-shimmer 1.5s infinite;
    border-radius: var(--ens-radius-sm);
}

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


/* ---------------------------------------------------------------------------
   14. REPORT / PRINT STYLES
   --------------------------------------------------------------------------- */

.ens-report {
    max-width: 1100px;
    margin: 0 auto;
    padding: 24px 32px;
}

.ens-report-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-bottom: var(--ens-space-lg);
    border-bottom: 3px solid var(--ens-navy);
    margin-bottom: var(--ens-space-xl);
}

.ens-report-header img {
    height: 48px;
}

.ens-report-title {
    font-size: var(--ens-text-3xl);
    font-weight: 700;
    color: var(--ens-navy);
    letter-spacing: -0.02em;
    margin: 0 0 6px 0;
}

@media print {
    .ens-no-print { display: none !important; }

    body.ens {
        font-size: 10pt;
        color: #000;
    }

    .ens-topbar, .ens-tabnav {
        display: none;
    }

    .ens-card, .ens-panel-accent {
        border: 1px solid #ccc;
        box-shadow: none;
        break-inside: avoid;
    }

    .ens-report-header {
        border-bottom-color: #000;
    }

    .ens-chart-grid {
        grid-template-columns: 1fr 1fr;
    }

    .ens-section-title::after {
        background: #000;
    }
}


/* ---------------------------------------------------------------------------
   15. UTILITY CLASSES
   --------------------------------------------------------------------------- */

/* Flex helpers */
.ens-flex        { display: flex; }
.ens-flex-col    { display: flex; flex-direction: column; }
.ens-flex-center { display: flex; align-items: center; justify-content: center; }
.ens-flex-between { display: flex; align-items: center; justify-content: space-between; }
.ens-gap-sm      { gap: var(--ens-space-sm); }
.ens-gap-md      { gap: var(--ens-space-md); }
.ens-gap-lg      { gap: var(--ens-space-lg); }
.ens-gap-xl      { gap: var(--ens-space-xl); }

/* Grid helpers */
.ens-grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: var(--ens-space-lg); }
.ens-grid-3 { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: var(--ens-space-lg); }
.ens-grid-4 { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--ens-space-lg); }

/* Text alignment */
.ens-text-center { text-align: center; }
.ens-text-right  { text-align: right; }

/* Spacing */
.ens-mt-sm  { margin-top: var(--ens-space-sm); }
.ens-mt-md  { margin-top: var(--ens-space-md); }
.ens-mt-lg  { margin-top: var(--ens-space-lg); }
.ens-mt-xl  { margin-top: var(--ens-space-xl); }
.ens-mb-sm  { margin-bottom: var(--ens-space-sm); }
.ens-mb-md  { margin-bottom: var(--ens-space-md); }
.ens-mb-lg  { margin-bottom: var(--ens-space-lg); }
.ens-mb-xl  { margin-bottom: var(--ens-space-xl); }

/* Truncate */
.ens-truncate {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

/* Scrollable container */
.ens-scroll {
    overflow: auto;
    max-height: 400px;
}

/* Divider */
.ens-divider {
    border: none;
    border-top: 1px solid var(--ens-border);
    margin: var(--ens-space-xl) 0;
}

/* Visually hidden (accessible) */
.ens-sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}