/**
 * WP Job Portal shared design-system foundation.
 *
 * This file intentionally provides low-specificity foundations and opt-in
 * components. Existing templates retain their current presentation while
 * Release 3 pages progressively adopt the wpjp-ds-* component classes.
 */

:root {
    /* Semantic colour aliases preserve the administrator's existing theme. */
    --wpjp-ds-color-primary: var(--wpjp-primary-color, #6246c6);
    --wpjp-ds-color-primary-strong: var(--wpjp-secondary-color, #333333);
    --wpjp-ds-color-text: var(--wpjp-body-font-color, #3f4652);
    --wpjp-ds-color-text-muted: #667085;
    --wpjp-ds-color-border: var(--wpjp-border-color, #d9dee7);
    --wpjp-ds-color-surface: var(--wpjp-card-background, #ffffff);
    --wpjp-ds-color-canvas: var(--wpjp-background-color, #f6f7f9);
    --wpjp-ds-color-success: var(--wpjp-success-color, #16803c);
    --wpjp-ds-color-warning: var(--wpjp-warning-color, #a15c00);
    --wpjp-ds-color-danger: var(--wpjp-danger-color, #c52a35);
    --wpjp-ds-color-info: #1261a0;

    /*
     * Typography follows the plugin's own scale, not a second one.
     *
     * The colours here have always deferred to Core - primary, text, border,
     * surface, canvas, success, warning and danger each read a --wpjp-*
     * variable and fall back only if it is absent. The type did not: it was a
     * separate rem-and-clamp scale, so a site owner who set
     * --wpjp-body-font-size to 20px saw Core's text change and every add-on
     * screen stay at 16px. These variables are offered to site owners to
     * change, so an add-on that ignores them is an add-on that breaks the
     * promise.
     *
     * They are px, deliberately. Core states px and a rem here would be
     * measured against the theme's root rather than the plugin's own scale,
     * which is how the two drifted apart in the first place.
     *
     * xs and sm stay fixed, because the small sizes are for the quiet things -
     * a caption, a timestamp, a helper line - and those should not grow with
     * the body text they sit beneath.
     */
    --wpjp-ds-font-family: inherit;
    --wpjp-ds-font-size-xs: 13px;
    --wpjp-ds-font-size-sm: 14px;
    --wpjp-ds-font-size-md: var(--wpjp-body-font-size, 17px);
    --wpjp-ds-font-size-lg: var(--wpjp-sub-heading, 22px);
    --wpjp-ds-font-size-xl: var(--wpjp-second-sub-heading, 27px);
    --wpjp-ds-font-size-2xl: var(--wpjp-main-heading, 32px);
    --wpjp-ds-line-height: 1.55;
    --wpjp-ds-space-1: 0.25rem;
    --wpjp-ds-space-2: 0.5rem;
    --wpjp-ds-space-3: 0.75rem;
    --wpjp-ds-space-4: 1rem;
    --wpjp-ds-space-5: 1.25rem;
    --wpjp-ds-space-6: 1.5rem;
    --wpjp-ds-space-8: 2rem;
    --wpjp-ds-space-10: 2.5rem;
    --wpjp-ds-space-12: 3rem;

    /* Shared shape, elevation, focus and layout contracts. */
    --wpjp-ds-radius-sm: 0.375rem;
    --wpjp-ds-radius-md: 0.625rem;
    --wpjp-ds-radius-lg: 0.875rem;
    --wpjp-ds-shadow-sm: 0 1px 2px rgba(16, 24, 40, 0.06);
    --wpjp-ds-shadow-md: var(--wpjp-card-shadow, 0 4px 15px rgba(16, 24, 40, 0.08));
    --wpjp-ds-focus-ring: var(--wpjp-focus-shadow-color, 0 0 0 3px rgba(98, 70, 198, 0.25));
    --wpjp-ds-control-height: 2.75rem;
    --wpjp-ds-content-width: 75rem;
    --wpjp-ds-transition: 160ms ease;
}

/* Keep sizing and media predictable without resetting the host theme. */
:where(#wpjobportal-wrapper, #wpjobportaladmin-wrapper),
:where(#wpjobportal-wrapper, #wpjobportaladmin-wrapper) *,
:where(#wpjobportal-wrapper, #wpjobportaladmin-wrapper) *::before,
:where(#wpjobportal-wrapper, #wpjobportaladmin-wrapper) *::after {
    box-sizing: border-box;
}

:where(#wpjobportal-wrapper, #wpjobportaladmin-wrapper) :where(img, svg, video) {
    max-width: 100%;
}

:where(#wpjobportal-wrapper, #wpjobportaladmin-wrapper) :where(button, input, select, textarea) {
    font: inherit;
}

/* One WCAG-visible keyboard focus treatment across old and new controls. */
:where(#wpjobportal-wrapper, #wpjobportaladmin-wrapper) :where(a, button, input, select, textarea, [tabindex]):focus-visible {
    outline: 2px solid var(--wpjp-ds-color-primary);
    outline-offset: 2px;
    box-shadow: var(--wpjp-ds-focus-ring);
}

/* Screen-reader utility becomes visible when keyboard users focus it. */
.wpjp-ds-skip-link,
.wpjp-ds-visually-hidden {
    position: absolute !important;
    width: 1px !important;
    height: 1px !important;
    padding: 0 !important;
    margin: -1px !important;
    overflow: hidden !important;
    clip: rect(0, 0, 0, 0) !important;
    white-space: nowrap !important;
    border: 0 !important;
}

.wpjp-ds-skip-link:focus {
    position: fixed !important;
    z-index: 100000 !important;
    inset-block-start: var(--wpjp-ds-space-3) !important;
    inset-inline-start: var(--wpjp-ds-space-3) !important;
    width: auto !important;
    height: auto !important;
    padding: var(--wpjp-ds-space-3) var(--wpjp-ds-space-4) !important;
    margin: 0 !important;
    overflow: visible !important;
    clip: auto !important;
    white-space: normal !important;
    color: #ffffff !important;
    background: var(--wpjp-ds-color-primary-strong) !important;
    border-radius: var(--wpjp-ds-radius-md) !important;
}

/* Layout primitives shared by candidate, employer and administrator screens. */
.wpjp-ds-container {
    width: min(100% - 2rem, var(--wpjp-ds-content-width));
    margin-inline: auto;
}

.wpjp-ds-stack {
    display: flex;
    flex-direction: column;
    gap: var(--wpjp-ds-stack-gap, var(--wpjp-ds-space-4));
}

.wpjp-ds-cluster {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: var(--wpjp-ds-cluster-gap, var(--wpjp-ds-space-3));
}

.wpjp-ds-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(min(100%, var(--wpjp-ds-grid-min, 16rem)), 1fr));
    gap: var(--wpjp-ds-grid-gap, var(--wpjp-ds-space-5));
}

.wpjp-ds-sidebar-layout {
    display: grid;
    grid-template-columns: minmax(14rem, 18rem) minmax(0, 1fr);
    gap: var(--wpjp-ds-space-6);
    align-items: start;
}

.wpjp-ds-card {
    min-width: 0;
    padding: var(--wpjp-ds-space-5);
    color: var(--wpjp-ds-color-text);
    background: var(--wpjp-ds-color-surface);
    border: 1px solid var(--wpjp-ds-color-border);
    border-radius: var(--wpjp-ds-radius-lg);
    box-shadow: var(--wpjp-ds-shadow-sm);
}

.wpjp-ds-card__header,
.wpjp-ds-card__footer {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: var(--wpjp-ds-space-3);
}

.wpjp-ds-title {
    margin: 0;
    color: var(--wpjp-ds-color-text);
    font-size: var(--wpjp-ds-font-size-xl);
    line-height: 1.25;
}

.wpjp-ds-description {
    margin: 0;
    color: var(--wpjp-ds-color-text-muted);
    font-size: var(--wpjp-ds-font-size-sm);
    line-height: var(--wpjp-ds-line-height);
}

/* Form contract. Later templates can adopt this without page-specific CSS. */
.wpjp-ds-field {
    display: grid;
    gap: var(--wpjp-ds-space-2);
    min-width: 0;
}

.wpjp-ds-label {
    color: var(--wpjp-ds-color-text);
    font-size: var(--wpjp-ds-font-size-sm);
    font-weight: 600;
    line-height: 1.4;
}

.wpjp-ds-control {
    width: 100%;
    min-height: var(--wpjp-ds-control-height);
    padding: 0.625rem 0.75rem;
    color: var(--wpjp-ds-color-text);
    background: var(--wpjp-ds-color-surface);
    border: 1px solid var(--wpjp-ds-color-border);
    border-radius: var(--wpjp-ds-radius-md);
    transition: border-color var(--wpjp-ds-transition), box-shadow var(--wpjp-ds-transition);
}

textarea.wpjp-ds-control {
    min-height: 7rem;
    resize: vertical;
}

.wpjp-ds-control:focus {
    border-color: var(--wpjp-ds-color-primary);
}

.wpjp-ds-control[aria-invalid="true"],
.wpjp-ds-field.is-invalid .wpjp-ds-control {
    border-color: var(--wpjp-ds-color-danger);
}

.wpjp-ds-help,
.wpjp-ds-error {
    margin: 0;
    font-size: var(--wpjp-ds-font-size-xs);
    line-height: 1.5;
}

.wpjp-ds-help { color: var(--wpjp-ds-color-text-muted); }
.wpjp-ds-error { color: var(--wpjp-ds-color-danger); }

/* Minimum 44px target supports WCAG 2.2 target-size guidance. */
.wpjp-ds-button {
    display: inline-flex;
    min-height: var(--wpjp-ds-control-height);
    padding: 0.625rem 1rem;
    align-items: center;
    justify-content: center;
    gap: var(--wpjp-ds-space-2);
    color: #ffffff;
    background: var(--wpjp-ds-color-primary);
    border: 1px solid transparent;
    border-radius: var(--wpjp-ds-radius-md);
    font-size: var(--wpjp-ds-font-size-sm);
    font-weight: 600;
    line-height: 1.25;
    text-align: center;
    text-decoration: none;
    cursor: pointer;
    transition: background-color var(--wpjp-ds-transition), border-color var(--wpjp-ds-transition), color var(--wpjp-ds-transition);
}

.wpjp-ds-button:hover {
    color: #ffffff;
    background: var(--wpjp-ds-color-primary-strong);
}

.wpjp-ds-button--secondary {
    color: var(--wpjp-ds-color-primary-strong);
    background: var(--wpjp-ds-color-surface);
    border-color: var(--wpjp-ds-color-border);
}

.wpjp-ds-button--secondary:hover {
    color: var(--wpjp-ds-color-primary-strong);
    background: var(--wpjp-ds-color-canvas);
    border-color: var(--wpjp-ds-color-primary);
}

.wpjp-ds-button:disabled,
.wpjp-ds-button[aria-disabled="true"] {
    opacity: 0.55;
    cursor: not-allowed;
}

.wpjp-ds-notice {
    padding: var(--wpjp-ds-space-4);
    color: var(--wpjp-ds-color-text);
    background: var(--wpjp-ds-color-canvas);
    border: 1px solid var(--wpjp-ds-color-border);
    border-inline-start: 4px solid var(--wpjp-ds-color-info);
    border-radius: var(--wpjp-ds-radius-md);
}

/* The message is a <p>; the theme's paragraph margins doubled the padding. */
.wpjp-ds-notice > :first-child { margin-block-start: 0; }
.wpjp-ds-notice > :last-child { margin-block-end: 0; }

/* A tint of the status colour, so success does not read as a grey box. */
.wpjp-ds-notice--success {
    border-inline-start-color: var(--wpjp-ds-color-success);
    background: color-mix(in srgb, var(--wpjp-ds-color-success) 8%, var(--wpjp-ds-color-surface, #fff));
}
.wpjp-ds-notice--warning {
    border-inline-start-color: var(--wpjp-ds-color-warning);
    background: color-mix(in srgb, var(--wpjp-ds-color-warning) 10%, var(--wpjp-ds-color-surface, #fff));
}
.wpjp-ds-notice--danger {
    border-inline-start-color: var(--wpjp-ds-color-danger);
    background: color-mix(in srgb, var(--wpjp-ds-color-danger) 8%, var(--wpjp-ds-color-surface, #fff));
}

.wpjp-ds-table-scroll {
    max-width: 100%;
    overflow-x: auto;
    overscroll-behavior-inline: contain;
    -webkit-overflow-scrolling: touch;
}

.wpjp-ds-empty-state {
    display: grid;
    justify-items: center;
    gap: var(--wpjp-ds-space-3);
    padding: clamp(2rem, 7vw, 4rem) var(--wpjp-ds-space-5);
    color: var(--wpjp-ds-color-text-muted);
    text-align: center;
    background: var(--wpjp-ds-color-surface);
    border: 1px dashed var(--wpjp-ds-color-border);
    border-radius: var(--wpjp-ds-radius-lg);
}

/* The page-level empty state (WPJOBPORTALlayout::emptyState()). */
.wpjp-ds-empty-state--card {
    box-sizing: border-box;
    width: min(100%, 760px);
    margin: 24px auto 8px;
    gap: 0;
    padding: 48px 40px;
    border: 1px solid var(--wpjp-border-color, #e9ecef);
    border-block-start: 4px solid var(--wpjp-primary-color, #3baeda);
    border-radius: 8px;
    background: var(--wpjp-card-background, #fff);
    box-shadow: var(--wpjp-card-shadow, 0 4px 15px rgba(0, 0, 0, 0.08));
    color: var(--wpjp-body-font-color, #575757);
}
.wpjp-ds-empty-state__icon {
    position: relative;
    display: block;
    width: 72px;
    height: 72px;
    margin: 0 auto 22px;
    border: 1px solid var(--wpjp-border-color, #e9ecef);
    border-radius: 12px;
    background: var(--wpjp-background-color, #f6f6f6);
}
.wpjp-ds-empty-state__icon::before,
.wpjp-ds-empty-state__icon::after {
    position: absolute;
    inset-inline-start: 18px;
    width: 34px;
    height: 9px;
    border: 2px solid var(--wpjp-primary-color, #3baeda);
    border-radius: 5px;
    content: "";
}
.wpjp-ds-empty-state__icon::before { top: 21px; }
.wpjp-ds-empty-state__icon::after { top: 39px; width: 25px; }
.wpjp-ds-empty-state__eyebrow {
    margin: 0 0 8px;
    color: var(--wpjp-primary-color, #3baeda);
    font-size: 12px;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}
.wpjp-ds-empty-state__title {
    margin: 0;
    color: var(--wpjp-secondary-color, #333333);
    font-size: clamp(20px, 3vw, 26px);
    font-weight: 700;
    line-height: 1.25;
}
.wpjp-ds-empty-state__description {
    max-width: 570px;
    margin: 12px auto 0;
    font-size: 15px;
    line-height: 1.7;
}
.wpjp-ds-empty-state__actions {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 10px;
    margin-top: 24px;
}
.wpjp-ds-empty-state__action {
    display: inline-flex;
    align-items: center;
    min-height: 44px;
    padding: 0 20px;
    border-radius: 8px;
    background: var(--wpjp-primary-color, #3baeda);
    color: #fff;
    font-weight: 600;
    text-decoration: none;
}
.wpjp-ds-empty-state__action:hover,
.wpjp-ds-empty-state__action:focus { color: #fff; filter: brightness(0.95); }
/* A section's own empty note: quiet, no card. */
.wpjp-ds-empty-state--compact { padding: 16px; }
.wpjp-ds-empty-state--compact .wpjp-ds-empty-state__description { margin: 0; font-size: 14px; }
@media (max-width: 480px) {
    .wpjp-ds-empty-state--card { padding: 32px 20px; }
}

@media (max-width: 782px) {
    .wpjp-ds-container {
        width: min(100% - 1.5rem, var(--wpjp-ds-content-width));
    }

    .wpjp-ds-sidebar-layout {
        grid-template-columns: minmax(0, 1fr);
    }

    .wpjp-ds-card {
        padding: var(--wpjp-ds-space-4);
    }
}

@media (max-width: 480px) {
    .wpjp-ds-button--mobile-full {
        width: 100%;
    }

    .wpjp-ds-card__header,
    .wpjp-ds-card__footer {
        align-items: stretch;
        flex-direction: column;
    }
}

@media (prefers-reduced-motion: reduce) {
    :where(#wpjobportal-wrapper, #wpjobportaladmin-wrapper) *,
    :where(#wpjobportal-wrapper, #wpjobportaladmin-wrapper) *::before,
    :where(#wpjobportal-wrapper, #wpjobportaladmin-wrapper) *::after {
        scroll-behavior: auto !important;
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

@media (forced-colors: active) {
    .wpjp-ds-button,
    .wpjp-ds-card,
    .wpjp-ds-control,
    .wpjp-ds-notice {
        border-color: CanvasText;
    }
}