/**
 * NetVision design tokens — Velzon-aligned palette for admin + login.
 * Load before modern-ui.css and login-modern.css.
 */

:root {
    --nv-font-sans: "Segoe UI", system-ui, -apple-system, Roboto, "Helvetica Neue", Arial, sans-serif;

    --nv-radius-sm: 6px;
    --nv-radius-md: 8px;
    --nv-radius-lg: 12px;
    --nv-radius-xl: 1.25rem;

    /* Velzon-style primary */
    --nv-primary: #556ee6;
    --nv-primary-hover: #485ec4;
    --nv-primary-rgb: 85, 110, 230;

    /* Gradients used on login and accent buttons (Velzon blue, not purple) */
    --nv-gradient-start: #556ee6;
    --nv-gradient-end: #2f4fd0;

    --nv-success: #34c38f;
    --nv-danger: #f46a6a;
    --nv-warning: #f1b44c;
    --nv-info: #50a5f1;

    --nv-focus-ring: 0 0 0 3px rgba(var(--nv-primary-rgb), 0.35);
    --nv-shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.08);
    --nv-shadow-md: 0 8px 24px rgba(18, 38, 63, 0.1);
    --nv-transition-fast: 0.15s ease;
    --nv-transition-base: 0.2s ease;

    /* Login shell (BIT-28872) */
    --nv-login-ink: #0f172a;
    --nv-login-ink-muted: #64748b;
    --nv-login-surface: #ffffff;
    --nv-login-surface-muted: #f8fafc;
    --nv-login-border: #e2e8f0;
    --nv-login-brand-from: #0b1220;
    --nv-login-brand-to: #1e293b;
    --nv-login-page-from: #e8eef8;
    --nv-login-page-to: #f4f7fb;

    /* Forms (BIT-29780 / BIT-28866 Fase 0) — used by nv-forms.css */
    --nv-form-field-gap: 0.375rem;
    --nv-form-field-margin: 1.25rem;
    --nv-form-section-gap: 1.5rem;
    --nv-form-actions-gap: 0.75rem;
    --nv-form-label-size: 0.875rem;
    --nv-form-label-weight: 600;
    --nv-form-label-color: #495057;
    --nv-form-hint-size: 0.8125rem;
    --nv-form-hint-color: #6c757d;
    --nv-form-control-padding-y: 0.625rem;
    --nv-form-control-padding-x: 0.875rem;
    --nv-form-control-radius: var(--nv-radius-sm);
    --nv-form-control-border: #e0e0e0;
    --nv-form-control-bg: #ffffff;
    --nv-form-control-color: #212529;
    --nv-form-control-placeholder: #adb5bd;
    --nv-form-control-focus-border: var(--nv-primary);
    --nv-form-control-focus-ring: var(--nv-focus-ring);
    --nv-form-control-disabled-bg: #e9ecef;
    --nv-form-control-disabled-color: #6c757d;
    --nv-form-control-error-border: var(--nv-danger);
    --nv-form-control-error-ring: 0 0 0 3px rgba(244, 106, 106, 0.3);
    --nv-form-control-max-width: 100%;
}

@media (prefers-reduced-motion: reduce) {
    :root {
        --nv-transition-fast: 0.01ms;
        --nv-transition-base: 0.01ms;
    }

    .card,
    .btn,
    .form-control,
    .nv-form__control {
        transition-duration: 0.01ms !important;
    }
}

/* First tab stop: skip past topbar / sidebar */
.nv-skip-link {
    position: absolute;
    left: -9999px;
    top: 0.75rem;
    z-index: 11000;
    padding: 0.5rem 1rem;
    font-weight: 600;
    font-size: 0.875rem;
    font-family: var(--nv-font-sans);
    color: #fff;
    background: var(--nv-primary);
    border-radius: var(--nv-radius-sm);
    text-decoration: none;
    box-shadow: var(--nv-shadow-md);
    transition: box-shadow var(--nv-transition-fast), left var(--nv-transition-fast);
}

.nv-skip-link:focus {
    left: 0.75rem;
    outline: none;
    box-shadow: var(--nv-focus-ring), var(--nv-shadow-md);
}

#nv-main-content:focus {
    outline: none;
}

#nv-main-content:focus-visible {
    outline: 2px solid var(--nv-primary);
    outline-offset: 4px;
}

/* Dashboard Apex chart: loading placeholder until API + render complete */
.apex-charts.nv-chart-loading {
    position: relative;
    min-height: 280px;
    border-radius: var(--nv-radius-md);
    background: linear-gradient(
        90deg,
        rgba(var(--nv-primary-rgb), 0.06) 0%,
        rgba(var(--nv-primary-rgb), 0.14) 50%,
        rgba(var(--nv-primary-rgb), 0.06) 100%
    );
    background-size: 200% 100%;
    animation: nv-chart-shimmer 1.1s ease-in-out infinite;
}

@keyframes nv-chart-shimmer {
    0% {
        background-position: 100% 0;
    }
    100% {
        background-position: -100% 0;
    }
}

@media (prefers-reduced-motion: reduce) {
    .apex-charts.nv-chart-loading {
        animation: none;
        background-size: 100% 100%;
    }
}