/*
 * STX Design System V3 - Utility Classes
 * Clases utilitarias minimas para el sistema
 * Se carga ANTES de main_v2.css desde top.php
 *
 * Prefijo: stx- para evitar conflictos
 * Fecha: 2026-02-11
 */

/* ============================================
   LAYOUT - Flexbox
   ============================================ */
.stx-flex {
    display: flex;
}

.stx-flex-col {
    display: flex;
    flex-direction: column;
}

.stx-flex-wrap {
    flex-wrap: wrap;
}

.stx-items-center {
    align-items: center;
}

.stx-items-start {
    align-items: flex-start;
}

.stx-items-end {
    align-items: flex-end;
}

.stx-justify-between {
    justify-content: space-between;
}

.stx-justify-center {
    justify-content: center;
}

.stx-justify-end {
    justify-content: flex-end;
}

.stx-flex-1 {
    flex: 1;
}

/* ============================================
   LAYOUT - Grid
   ============================================ */
.stx-grid {
    display: grid;
}

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

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

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

.stx-grid-12 {
    display: grid;
    grid-template-columns: repeat(12, 1fr);
}

/* Responsive grid que colapsa automaticamente */
.stx-grid-auto {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

/* ============================================
   GAP (spacing entre items de grid/flex)
   ============================================ */
.stx-gap-1 { gap: var(--space-1); }
.stx-gap-2 { gap: var(--space-2); }
.stx-gap-3 { gap: var(--space-3); }
.stx-gap-4 { gap: var(--space-4); }
.stx-gap-5 { gap: var(--space-5); }
.stx-gap-6 { gap: var(--space-6); }
.stx-gap-8 { gap: var(--space-8); }

/* ============================================
   CARDS
   ============================================ */
.stx-card {
    background: var(--bg-elevated, #ffffff);
    border: 1px solid var(--border-default, #e2e8f0);
    border-radius: var(--radius-lg, 12px);
    box-shadow: var(--shadow-sm);
    padding: var(--space-6, 24px);
    transition: box-shadow var(--transition-base, 150ms ease);
}

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

.stx-card-compact {
    background: var(--bg-elevated, #ffffff);
    border: 1px solid var(--border-default, #e2e8f0);
    border-radius: var(--radius-md, 8px);
    box-shadow: var(--shadow-xs);
    padding: var(--space-4, 16px);
}

/* ============================================
   BADGES
   ============================================ */
.stx-badge {
    display: inline-flex;
    align-items: center;
    padding: 2px 10px;
    font-family: var(--font-sans, 'Inter', sans-serif);
    font-size: var(--text-xs, 0.75rem);
    font-weight: 600;
    line-height: 1.5;
    border-radius: var(--radius-full, 9999px);
    white-space: nowrap;
    background-color: var(--stx-gray-100, #f1f5f9);
    color: var(--stx-gray-700, #334155);
}

.stx-badge-success {
    background-color: var(--stx-success-light, #f0fdf4);
    color: var(--stx-success-dark, #15803d);
}

.stx-badge-warning {
    background-color: var(--stx-warning-light, #fffbeb);
    color: var(--stx-warning-dark, #b45309);
}

.stx-badge-danger {
    background-color: var(--stx-danger-light, #fef2f2);
    color: var(--stx-danger-dark, #b91c1c);
}

.stx-badge-info {
    background-color: var(--stx-info-light, #f0f9ff);
    color: var(--stx-info-dark, #0369a1);
}

.stx-badge-primary {
    background-color: var(--stx-primary-50, #eff6ff);
    color: var(--stx-primary-700, #1d4ed8);
}

/* ============================================
   KPI CARDS
   ============================================ */
.stx-kpi {
    background: var(--bg-elevated, #ffffff);
    border: 1px solid var(--border-default, #e2e8f0);
    border-radius: var(--radius-lg, 12px);
    box-shadow: var(--shadow-sm);
    padding: var(--space-5, 20px) var(--space-6, 24px);
    transition: box-shadow var(--transition-base, 150ms ease),
                transform var(--transition-base, 150ms ease);
}

.stx-kpi:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-1px);
}

.stx-kpi-value {
    font-family: var(--font-sans, 'Inter', sans-serif);
    font-size: var(--text-3xl, 1.875rem);
    font-weight: 700;
    color: var(--text-primary, #0f172a);
    line-height: 1.2;
    font-variant-numeric: tabular-nums;
}

.stx-kpi-label {
    font-family: var(--font-sans, 'Inter', sans-serif);
    font-size: var(--text-sm, 0.875rem);
    font-weight: 500;
    color: var(--text-secondary, #475569);
    margin-top: var(--space-1, 4px);
}

.stx-kpi-trend {
    display: inline-flex;
    align-items: center;
    gap: var(--space-1, 4px);
    font-family: var(--font-sans, 'Inter', sans-serif);
    font-size: var(--text-xs, 0.75rem);
    font-weight: 600;
    margin-top: var(--space-2, 8px);
    padding: 2px 8px;
    border-radius: var(--radius-full, 9999px);
}

.stx-kpi-trend-up {
    color: var(--stx-success-dark, #15803d);
    background-color: var(--stx-success-light, #f0fdf4);
}

.stx-kpi-trend-up::before {
    content: "\2191";
}

.stx-kpi-trend-down {
    color: var(--stx-danger-dark, #b91c1c);
    background-color: var(--stx-danger-light, #fef2f2);
}

.stx-kpi-trend-down::before {
    content: "\2193";
}

.stx-kpi-trend-neutral {
    color: var(--text-tertiary, #94a3b8);
    background-color: var(--stx-gray-100, #f1f5f9);
}

.stx-kpi-trend-neutral::before {
    content: "\2192";
}

.stx-kpi-icon {
    width: 44px;
    height: 44px;
    border-radius: var(--radius-md, 8px);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    flex-shrink: 0;
}

.stx-kpi-icon-blue {
    background-color: var(--stx-primary-50, #eff6ff);
    color: var(--stx-primary-600, #2563eb);
}

.stx-kpi-icon-green {
    background-color: var(--stx-success-light, #f0fdf4);
    color: var(--stx-success, #22c55e);
}

.stx-kpi-icon-yellow {
    background-color: var(--stx-warning-light, #fffbeb);
    color: var(--stx-warning, #f59e0b);
}

.stx-kpi-icon-red {
    background-color: var(--stx-danger-light, #fef2f2);
    color: var(--stx-danger, #ef4444);
}

/* ============================================
   SPACING - Padding
   ============================================ */
.stx-p-0 { padding: 0; }
.stx-p-1 { padding: var(--space-1); }
.stx-p-2 { padding: var(--space-2); }
.stx-p-3 { padding: var(--space-3); }
.stx-p-4 { padding: var(--space-4); }
.stx-p-5 { padding: var(--space-5); }
.stx-p-6 { padding: var(--space-6); }
.stx-p-8 { padding: var(--space-8); }

.stx-px-2 { padding-left: var(--space-2); padding-right: var(--space-2); }
.stx-px-4 { padding-left: var(--space-4); padding-right: var(--space-4); }
.stx-px-6 { padding-left: var(--space-6); padding-right: var(--space-6); }

.stx-py-2 { padding-top: var(--space-2); padding-bottom: var(--space-2); }
.stx-py-4 { padding-top: var(--space-4); padding-bottom: var(--space-4); }
.stx-py-6 { padding-top: var(--space-6); padding-bottom: var(--space-6); }

/* ============================================
   SPACING - Margin
   ============================================ */
.stx-m-0 { margin: 0; }
.stx-m-1 { margin: var(--space-1); }
.stx-m-2 { margin: var(--space-2); }
.stx-m-3 { margin: var(--space-3); }
.stx-m-4 { margin: var(--space-4); }

.stx-mt-2 { margin-top: var(--space-2); }
.stx-mt-4 { margin-top: var(--space-4); }
.stx-mt-6 { margin-top: var(--space-6); }

.stx-mb-2 { margin-bottom: var(--space-2); }
.stx-mb-4 { margin-bottom: var(--space-4); }
.stx-mb-6 { margin-bottom: var(--space-6); }

.stx-mx-auto { margin-left: auto; margin-right: auto; }

/* ============================================
   TEXT UTILITIES
   ============================================ */
.stx-text-xs { font-size: var(--text-xs); }
.stx-text-sm { font-size: var(--text-sm); }
.stx-text-base { font-size: var(--text-base); }
.stx-text-lg { font-size: var(--text-lg); }
.stx-text-xl { font-size: var(--text-xl); }
.stx-text-2xl { font-size: var(--text-2xl); }
.stx-text-3xl { font-size: var(--text-3xl); }

.stx-font-medium { font-weight: 500; }
.stx-font-semibold { font-weight: 600; }
.stx-font-bold { font-weight: 700; }

.stx-text-center { text-align: center; }
.stx-text-right { text-align: right; }
.stx-text-left { text-align: left; }

.stx-text-primary { color: var(--text-primary); }
.stx-text-secondary { color: var(--text-secondary); }
.stx-text-tertiary { color: var(--text-tertiary); }
.stx-text-success { color: var(--stx-success-dark); }
.stx-text-danger { color: var(--stx-danger-dark); }
.stx-text-warning { color: var(--stx-warning-dark); }

.stx-tabular-nums {
    font-variant-numeric: tabular-nums;
}

.stx-uppercase {
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.stx-truncate {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

/* ============================================
   DISPLAY / VISIBILITY
   ============================================ */
.stx-hidden { display: none; }
.stx-block { display: block; }
.stx-inline-block { display: inline-block; }
.stx-relative { position: relative; }

/* ============================================
   WIDTH UTILITIES
   ============================================ */
.stx-w-full { width: 100%; }
.stx-max-w-sm { max-width: 640px; }
.stx-max-w-md { max-width: 768px; }
.stx-max-w-lg { max-width: 1024px; }
.stx-max-w-xl { max-width: 1280px; }

/* ============================================
   FORM GRID (responsive form layout)
   ============================================ */
.stx-form-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--space-4, 16px);
}

.stx-form-group {
    display: flex;
    flex-direction: column;
    gap: var(--space-1, 4px);
}

.stx-form-label {
    font-family: var(--font-sans, 'Inter', sans-serif);
    font-size: var(--text-sm, 0.875rem);
    font-weight: 600;
    color: var(--text-secondary, #475569);
}

.stx-form-help {
    font-family: var(--font-sans, 'Inter', sans-serif);
    font-size: var(--text-xs, 0.75rem);
    color: var(--text-tertiary, #94a3b8);
}

.stx-form-error {
    font-family: var(--font-sans, 'Inter', sans-serif);
    font-size: var(--text-xs, 0.75rem);
    color: var(--stx-danger, #ef4444);
}

/* ============================================
   DIVIDER
   ============================================ */
.stx-divider {
    border: none;
    border-top: 1px solid var(--border-default, #e2e8f0);
    margin: var(--space-4, 16px) 0;
}

/* ============================================
   SECTION HEADER
   ============================================ */
.stx-section-header {
    font-family: var(--font-sans, 'Inter', sans-serif);
    font-size: var(--text-xs, 0.75rem);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-tertiary, #94a3b8);
    margin-bottom: var(--space-3, 12px);
    padding-bottom: var(--space-2, 8px);
    border-bottom: 1px solid var(--border-subtle, #f1f5f9);
}