/**
 * Prop Nexia Billing — customer-facing styles.
 *
 * Applied to checkout, account dashboard, login/OTP, downloads pages.
 * Uses the same design language as the admin CSS (admin.css) — same primary
 * color, same radii, same spacing scale — so both sides feel like one
 * product.
 *
 * Scoped to .pnb-page (applied via body_class filter on pages
 * containing Billing shortcodes) so we don't restyle the rest of the
 * marketing site. Tokens live on :root so the new checkout shortcode
 * (which inlines its own scoped block) can read the same values, and
 * so prefers-color-scheme can override globally without redoing each
 * scope.
 *
 * History note: earlier revisions of this file had dozens of inline
 * `style=""` declarations winning specificity fights against the
 * class-based rules below. The audit pass converted those inline
 * styles into the component classes documented below, so brand
 * changes propagate uniformly and dark mode is possible.
 */

/* ==========================================================================
   Tokens — defined once on :root so they cascade everywhere and can be
   overridden by prefers-color-scheme without touching individual scopes.
   ========================================================================== */

:root {
    --pnb-color-bg: #f7f9fc;
    --pnb-color-surface: #ffffff;
    --pnb-color-surface-2: #f9fafb;          /* slightly recessed surface */
    --pnb-color-border: #d9e4f2;
    --pnb-color-border-strong: #d1d5db;
    --pnb-color-divider: #f3f4f6;
    --pnb-color-text: #0f172a;
    --pnb-color-text-muted: #667085;
    --pnb-color-text-subtle: #94a3b8;
    --pnb-color-primary: #11387d;
    --pnb-color-primary-hover: #0d2a5c;
    --pnb-color-primary-soft: #eff3fb;
    --pnb-color-accent: #3b82f6;
    --pnb-color-success: #059669;
    --pnb-color-success-bg: #ecfdf5;
    --pnb-color-success-border: #a7f3d0;
    --pnb-color-warning: #b45309;
    --pnb-color-warning-bg: #fffbeb;
    --pnb-color-warning-border: #fcd34d;
    --pnb-color-danger: #b91c1c;
    --pnb-color-danger-bg: #fef2f2;
    --pnb-color-danger-border: #fca5a5;
    --pnb-radius-sm: 6px;
    --pnb-radius: 10px;
    --pnb-radius-lg: 14px;
    --pnb-shadow-sm: 0 1px 2px rgba(15, 23, 42, 0.04);
    --pnb-shadow: 0 1px 3px rgba(15, 23, 42, 0.06), 0 1px 2px rgba(15, 23, 42, 0.04);
    --pnb-shadow-md: 0 4px 6px -1px rgba(15, 23, 42, 0.07), 0 2px 4px -2px rgba(15, 23, 42, 0.05);
    --pnb-shadow-lg: 0 10px 15px -3px rgba(15, 23, 42, 0.08), 0 4px 6px -4px rgba(15, 23, 42, 0.05);
    --pnb-font-sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", "Inter", system-ui, sans-serif;
    --pnb-font-mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;
}

/* Dark mode — overrides token values; component CSS doesn't change. */
@media (prefers-color-scheme: dark) {
    :root {
        --pnb-color-bg: #0b1220;
        --pnb-color-surface: #0e1b2a;
        --pnb-color-surface-2: #0f172a;
        --pnb-color-border: #1f2937;
        --pnb-color-border-strong: #374151;
        --pnb-color-divider: #1f2937;
        --pnb-color-text: #f1f5f9;
        --pnb-color-text-muted: #94a3b8;
        --pnb-color-text-subtle: #64748b;
        --pnb-color-primary: #5b8def;
        --pnb-color-primary-hover: #7aa3f5;
        --pnb-color-primary-soft: rgba(91, 141, 239, 0.12);
        --pnb-color-accent: #60a5fa;
        --pnb-color-success: #34d399;
        --pnb-color-success-bg: rgba(16, 185, 129, 0.12);
        --pnb-color-success-border: rgba(16, 185, 129, 0.35);
        --pnb-color-warning: #fbbf24;
        --pnb-color-warning-bg: rgba(245, 158, 11, 0.12);
        --pnb-color-warning-border: rgba(245, 158, 11, 0.35);
        --pnb-color-danger: #f87171;
        --pnb-color-danger-bg: rgba(239, 68, 68, 0.12);
        --pnb-color-danger-border: rgba(239, 68, 68, 0.35);
        --pnb-shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.45);
        --pnb-shadow: 0 1px 3px rgba(0, 0, 0, 0.5), 0 1px 2px rgba(0, 0, 0, 0.35);
        --pnb-shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.5), 0 2px 4px -2px rgba(0, 0, 0, 0.35);
        --pnb-shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.55), 0 4px 6px -4px rgba(0, 0, 0, 0.4);
    }
}

/* ==========================================================================
   Shared building blocks
   ========================================================================== */

.pnb-page,
.pnb-page h1,
.pnb-page h2,
.pnb-page h3,
.pnb-page h4,
.pnb-page p,
.pnb-page a,
.pnb-page span,
.pnb-page div,
.pnb-page li,
.pnb-page button,
.pnb-page input,
.pnb-page label {
    font-family: var(--pnb-font-sans);
}

.pnb-page {
    color: var(--pnb-color-text);
}

.pnb-page code,
.pnb-page pre,
.pnb-page .pnb-license-key,
.pnb-page .pnb-form-input--code {
    font-family: var(--pnb-font-mono);
}

.pnb-page .pnb-panel {
    background: var(--pnb-color-surface);
    border: 1px solid var(--pnb-color-border);
    border-radius: var(--pnb-radius-lg);
    padding: 28px;
    box-shadow: var(--pnb-shadow);
}

.pnb-page .pnb-meta-row {
    font-size: 13px;
    color: var(--pnb-color-text-muted);
    line-height: 1.6;
}

/* Generic centered "state card" used by login prompts, processing states,
   and post-purchase fallbacks. */
.pnb-page .pnb-state-card {
    max-width: 520px;
    margin: 60px auto;
    padding: 32px;
    background: var(--pnb-color-surface);
    border: 1px solid var(--pnb-color-border);
    border-radius: var(--pnb-radius);
    box-shadow: var(--pnb-shadow-sm);
}
.pnb-page .pnb-state-card--centered { text-align: center; }
.pnb-page .pnb-state-card--narrow { max-width: 420px; }
.pnb-page .pnb-state-card--processing { max-width: 560px; }
.pnb-page .pnb-state-card--error { border-color: var(--pnb-color-danger-border); }
.pnb-page .pnb-state-card__title {
    margin: 0 0 12px;
    font-size: 20px;
    font-weight: 700;
    color: var(--pnb-color-text);
    line-height: 1.3;
}
.pnb-page .pnb-state-card--error .pnb-state-card__title {
    color: var(--pnb-color-danger);
}
.pnb-page .pnb-state-card__body {
    margin: 0 0 12px;
    color: var(--pnb-color-text);
    line-height: 1.6;
}
.pnb-page .pnb-state-card__meta {
    margin: 0;
    color: var(--pnb-color-text-muted);
    font-size: 13px;
    line-height: 1.6;
}
.pnb-page .pnb-state-card__meta a { color: var(--pnb-color-primary); }

/* Spinner */
.pnb-page .pnb-spinner {
    width: 28px;
    height: 28px;
    border: 3px solid var(--pnb-color-border);
    border-top-color: var(--pnb-color-primary);
    border-radius: 50%;
    animation: pnb-spin 0.8s linear infinite;
    flex-shrink: 0;
}
.pnb-page .pnb-spinner-row {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 12px;
}
.pnb-page .pnb-spinner-row .pnb-state-card__title {
    margin: 0;
    font-size: 18px;
}
@keyframes pnb-spin {
    to { transform: rotate(360deg); }
}

/* ==========================================================================
   CTAs
   ========================================================================== */

.pnb-page .pnb-cta-primary,
.pnb-page a.pnb-cta-primary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 11px 22px;
    background: var(--pnb-color-primary);
    color: #fff;
    border: 1px solid var(--pnb-color-primary);
    border-radius: var(--pnb-radius-sm);
    font-size: 14px;
    font-weight: 600;
    text-decoration: none;
    cursor: pointer;
    transition: background 0.12s ease, box-shadow 0.12s ease, transform 0.12s ease;
    box-shadow: var(--pnb-shadow);
}
.pnb-page .pnb-cta-primary:hover,
.pnb-page .pnb-cta-primary:focus {
    background: var(--pnb-color-primary-hover);
    color: #fff;
    text-decoration: none;
    box-shadow: var(--pnb-shadow-md);
    outline: none;
}
.pnb-page .pnb-cta-primary--block { width: 100%; }

.pnb-page .pnb-cta-secondary {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 16px;
    background: transparent;
    color: var(--pnb-color-text);
    border: 1px solid var(--pnb-color-border-strong);
    border-radius: var(--pnb-radius-sm);
    font-size: 14px;
    font-weight: 500;
    text-decoration: none;
    cursor: pointer;
    transition: border-color 0.12s ease, background 0.12s ease;
}
.pnb-page .pnb-cta-secondary:hover {
    border-color: var(--pnb-color-border-strong);
    background: var(--pnb-color-surface);
    color: var(--pnb-color-text);
}

.pnb-page .pnb-link-muted {
    color: var(--pnb-color-text-muted);
    font-size: 14px;
    text-decoration: underline;
}
.pnb-page .pnb-link-muted:hover {
    color: var(--pnb-color-text);
}

/* ==========================================================================
   Banners
   ========================================================================== */

.pnb-page .pnb-env-banner {
    padding: 10px 16px;
    border-radius: var(--pnb-radius);
    font-size: 13px;
    font-weight: 500;
    text-align: center;
    margin-bottom: 20px;
}
.pnb-page .pnb-env-banner.pnb-env-sandbox {
    background: var(--pnb-color-warning-bg);
    color: var(--pnb-color-warning);
    border: 1px solid var(--pnb-color-warning-border);
}

.pnb-page .pnb-banner {
    padding: 14px 16px;
    border-radius: var(--pnb-radius);
    margin: 0 0 20px;
    font-size: 14px;
    line-height: 1.55;
    border: 1px solid transparent;
}
.pnb-page .pnb-banner.pnb-banner-success {
    background: var(--pnb-color-success-bg);
    color: var(--pnb-color-success);
    border-color: var(--pnb-color-success-border);
}
.pnb-page .pnb-banner.pnb-banner-warning {
    background: var(--pnb-color-warning-bg);
    color: var(--pnb-color-warning);
    border-color: var(--pnb-color-warning-border);
}
.pnb-page .pnb-banner.pnb-banner-danger {
    background: var(--pnb-color-danger-bg);
    color: var(--pnb-color-danger);
    border-color: var(--pnb-color-danger-border);
}
.pnb-page .pnb-banner-title {
    font-weight: 600;
    margin-bottom: 2px;
}

/* ==========================================================================
   Account dashboard
   ========================================================================== */

.pnb-page .pnb-account {
    max-width: 820px;
    margin: 40px auto;
    padding: 0 20px;
    color: var(--pnb-color-text);
}

.pnb-page .pnb-account-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 24px;
    flex-wrap: wrap;
    gap: 12px;
}

.pnb-page .pnb-account-title {
    font-size: 28px;
    font-weight: 700;
    letter-spacing: -0.02em;
    color: var(--pnb-color-text);
    margin: 0;
    line-height: 1.2;
}

.pnb-page .pnb-account-subtitle {
    margin: 4px 0 0;
    color: var(--pnb-color-text-muted);
    font-size: 14px;
}

.pnb-page .pnb-account-footer {
    text-align: center;
    color: var(--pnb-color-text-subtle);
    font-size: 12px;
    margin: 40px 0 20px;
}

.pnb-page .pnb-empty-card {
    padding: 32px;
    border: 1px dashed var(--pnb-color-border-strong);
    border-radius: var(--pnb-radius);
    text-align: center;
    background: var(--pnb-color-surface-2);
}
.pnb-page .pnb-empty-card h2 {
    margin: 0 0 8px;
    color: var(--pnb-color-text);
    font-size: 18px;
}
.pnb-page .pnb-empty-card p {
    color: var(--pnb-color-text-muted);
    margin: 0;
}

/* License card */
.pnb-page .pnb-license-card,
.pnb-page .pnb-license-card {
    background: var(--pnb-color-surface);
    border: 1px solid var(--pnb-color-border);
    border-radius: var(--pnb-radius);
    padding: 24px;
    margin-bottom: 16px;
    box-shadow: var(--pnb-shadow-sm);
}

.pnb-page .pnb-license-card__head {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    flex-wrap: wrap;
    gap: 12px;
}

.pnb-page .pnb-license-card__head h2 {
    margin: 4px 0 0;
    color: var(--pnb-color-text);
    font-size: 20px;
    line-height: 1.2;
}

.pnb-page .pnb-stat-label {
    font-size: 12px;
    color: var(--pnb-color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.pnb-page .pnb-stat-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 16px;
    margin-top: 20px;
}

.pnb-page .pnb-stat {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.pnb-page .pnb-stat-value {
    font-size: 20px;
    font-weight: 600;
    color: var(--pnb-color-text);
    margin-top: 4px;
}

.pnb-page .pnb-stat-value-sub {
    color: var(--pnb-color-text-muted);
    font-weight: 400;
    font-size: 14px;
}

.pnb-page .pnb-stat-line {
    font-size: 14px;
    color: var(--pnb-color-text);
    margin-top: 6px;
}

/* License key block */
.pnb-page .pnb-license-key-section {
    margin-top: 20px;
}
.pnb-page .pnb-license-key-row {
    display: flex;
    gap: 8px;
    align-items: center;
    flex-wrap: wrap;
    margin-top: 6px;
}
.pnb-page .pnb-license-key {
    flex: 1;
    min-width: 200px;
    padding: 10px 12px;
    background: var(--pnb-color-primary-soft);
    color: var(--pnb-color-primary);
    border-radius: var(--pnb-radius-sm);
    border: 1px solid var(--pnb-color-border);
    font-size: 13px;
    line-height: 1.4;
    user-select: all;
    word-break: break-all;
    letter-spacing: 0.01em;
    font-family: var(--pnb-font-mono);
}
.pnb-page .pnb-copy-btn {
    padding: 10px 16px;
    background: var(--pnb-color-surface);
    color: var(--pnb-color-primary);
    border: 1px solid var(--pnb-color-border-strong);
    border-radius: var(--pnb-radius-sm);
    cursor: pointer;
    font-size: 13px;
    font-weight: 500;
    transition: background 0.12s ease, border-color 0.12s ease;
    font-family: var(--pnb-font-sans);
}
.pnb-page .pnb-copy-btn:hover {
    background: var(--pnb-color-primary-soft);
    border-color: var(--pnb-color-primary);
}
.pnb-page .pnb-help-text {
    font-size: 12px;
    color: var(--pnb-color-text-muted);
    margin: 6px 0 0;
}

/* Tight variant — used when the help text follows an input that already has
   bottom margin, to bring them closer together without overlap. */
.pnb-page .pnb-help-text--tight {
    display: block;
    margin: -12px 0 14px;
}

/* Activations list */
.pnb-page .pnb-section {
    margin-top: 24px;
    padding-top: 20px;
    border-top: 1px solid var(--pnb-color-divider);
}
.pnb-page .pnb-section-label {
    font-size: 12px;
    color: var(--pnb-color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 8px;
}

.pnb-page .pnb-activation-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 0;
    border-bottom: 1px solid var(--pnb-color-divider);
    gap: 12px;
    flex-wrap: wrap;
}
.pnb-page .pnb-activation-row:last-child {
    border-bottom: none;
}
.pnb-page .pnb-activation-url {
    font-size: 14px;
    color: var(--pnb-color-text);
}
.pnb-page .pnb-activation-meta {
    font-size: 11px;
    color: var(--pnb-color-text-subtle);
    margin-top: 2px;
}
.pnb-page .pnb-deactivate-link {
    font-size: 12px;
    color: var(--pnb-color-danger);
    text-decoration: none;
    padding: 4px 10px;
    border: 1px solid var(--pnb-color-danger-border);
    border-radius: 4px;
    transition: background 0.12s ease;
}
.pnb-page .pnb-deactivate-link:hover {
    background: var(--pnb-color-danger-bg);
    color: var(--pnb-color-danger);
}

/* Status badges in account context */
.pnb-page .pnb-status-badge {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 4px 10px;
    border-radius: 999px;
    font-size: 12px;
    font-weight: 600;
    border: 1px solid transparent;
    line-height: 1.4;
}
.pnb-page .pnb-status-badge.pnb-status-active {
    background: var(--pnb-color-success-bg);
    color: var(--pnb-color-success);
    border-color: var(--pnb-color-success-border);
}
.pnb-page .pnb-status-badge.pnb-status-warning {
    background: var(--pnb-color-warning-bg);
    color: var(--pnb-color-warning);
    border-color: var(--pnb-color-warning-border);
}
.pnb-page .pnb-status-badge.pnb-status-danger {
    background: var(--pnb-color-danger-bg);
    color: var(--pnb-color-danger);
    border-color: var(--pnb-color-danger-border);
}
.pnb-page .pnb-status-badge.pnb-status-muted {
    background: var(--pnb-color-divider);
    color: var(--pnb-color-text-muted);
    border-color: var(--pnb-color-border);
}

/* ==========================================================================
   Login / OTP flow
   ========================================================================== */

.pnb-page .pnb-login {
    max-width: 480px;
    margin: 40px auto;
    padding: 32px;
    background: var(--pnb-color-surface);
    border: 1px solid var(--pnb-color-border);
    border-radius: var(--pnb-radius);
    box-shadow: var(--pnb-shadow);
    color: var(--pnb-color-text);
}

.pnb-page .pnb-login h2 {
    font-size: 22px;
    font-weight: 700;
    letter-spacing: -0.02em;
    color: var(--pnb-color-text);
    margin: 0 0 8px;
}

.pnb-page .pnb-login p {
    color: var(--pnb-color-text-muted);
    font-size: 14px;
    line-height: 1.55;
    margin: 0 0 20px;
}

.pnb-page .pnb-form-label {
    display: block;
    font-weight: 600;
    font-size: 13px;
    color: var(--pnb-color-text);
    margin-bottom: 6px;
}

.pnb-page .pnb-form-input {
    width: 100%;
    padding: 11px 12px;
    border: 1px solid var(--pnb-color-border-strong);
    border-radius: var(--pnb-radius-sm);
    font-size: 15px;
    color: var(--pnb-color-text);
    background: var(--pnb-color-surface);
    transition: border-color 0.12s ease, box-shadow 0.12s ease;
    box-sizing: border-box;
    margin-bottom: 16px;
    font-family: var(--pnb-font-sans);
}
.pnb-page .pnb-form-input:focus {
    outline: none;
    border-color: var(--pnb-color-primary);
    box-shadow: 0 0 0 3px rgba(17, 56, 125, 0.1);
}

.pnb-page .pnb-form-input--code {
    font-family: var(--pnb-font-mono);
    font-size: 22px;
    letter-spacing: 0.3em;
    text-align: center;
    padding: 14px;
}

.pnb-page .pnb-form-submit {
    width: 100%;
    padding: 12px;
    background: var(--pnb-color-primary);
    color: #fff;
    border: 0;
    border-radius: var(--pnb-radius-sm);
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.12s ease, box-shadow 0.12s ease;
    font-family: var(--pnb-font-sans);
}
.pnb-page .pnb-form-submit:hover,
.pnb-page .pnb-form-submit:focus {
    background: var(--pnb-color-primary-hover);
    outline: none;
    box-shadow: var(--pnb-shadow-md);
}

.pnb-page .pnb-form-meta {
    margin: 16px 0 0;
    font-size: 13px;
    text-align: center;
}
.pnb-page .pnb-form-meta a {
    color: var(--pnb-color-text-muted);
    text-decoration: none;
    transition: color 0.12s ease;
}
.pnb-page .pnb-form-meta a:hover {
    color: var(--pnb-color-primary);
    text-decoration: underline;
}

/* ==========================================================================
   Accessibility — match patterns from Free's a11y.css
   ========================================================================== */

.pnb-page a:focus-visible,
.pnb-page button:focus-visible,
.pnb-page input:focus-visible,
.pnb-page select:focus-visible,
.pnb-page textarea:focus-visible {
    outline: 2px solid var(--pnb-color-primary);
    outline-offset: 2px;
    border-radius: var(--pnb-radius-sm);
}

@media (prefers-reduced-motion: reduce) {
    .pnb-page *,
    .pnb-page *::before,
    .pnb-page *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
    .pnb-page .pnb-spinner {
        animation: none !important;
        border-style: dashed;
    }
}

@media (forced-colors: active) {
    .pnb-page .pnb-license-card,
    .pnb-page .pnb-state-card,
    .pnb-page .pnb-login,
    .pnb-page .pnb-empty-card,
    .pnb-page .pnb-banner {
        border: 1px solid CanvasText;
    }
    .pnb-page .pnb-status-badge {
        border-color: CanvasText;
    }
    .pnb-page .pnb-cta-primary,
    .pnb-page .pnb-form-submit {
        border-color: CanvasText;
    }
}