/*
 * PDF Accessible Viewer — Frontend Styles
 * Inspired by the Accessibility Compliance Dashboard design tokens.
 *
 * @package PdfAccessibilityRemediator
 */

/* ── Design tokens ─────────────────────────────────────────────────────── */
.par-accessible-viewer {
    --par-primary:       #030213;
    --par-primary-fg:    #ffffff;
    --par-accent:        #6c47ff;
    --par-accent-hover:  #5535e0;
    --par-muted:         #ececf0;
    --par-muted-fg:      #6e6e85;
    --par-border:        #d8d8e8;
    --par-surface:       #ffffff;
    --par-surface-alt:   #f7f7fb;
    --par-radius:        8px;
    --par-radius-sm:     4px;
    --par-shadow:        0 2px 8px rgba(3,2,19,.08), 0 0 0 1px rgba(3,2,19,.06);
    --par-font:          -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;

    font-family: var(--par-font);
    color: var(--par-primary);
    background: var(--par-surface);
    border: 1px solid var(--par-border);
    border-radius: var(--par-radius);
    box-shadow: var(--par-shadow);
    margin: 1.5rem 0;
    overflow: hidden;
}

/* ── Header ─────────────────────────────────────────────────────────────── */
.par-viewer-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem 1.5rem;
    background: var(--par-surface-alt);
    border-bottom: 1px solid var(--par-border);
    flex-wrap: wrap;
    gap: .5rem;
}

.par-viewer-title {
    font-size: 1.125rem;
    font-weight: 600;
    margin: 0;
    line-height: 1.3;
}

.par-viewer-actions {
    display: flex;
    gap: .5rem;
    flex-wrap: wrap;
}

.par-view-mode-bar {
    display: flex;
    gap: .5rem;
    padding: .875rem 1.5rem;
    background: var(--par-surface);
    border-bottom: 1px solid var(--par-border);
    flex-wrap: wrap;
}

.par-view-toggle {
    appearance: none;
    border: 1px solid var(--par-border);
    background: var(--par-surface);
    color: var(--par-primary);
    border-radius: 999px;
    padding: .5rem .9rem;
    font-size: .875rem;
    font-weight: 600;
    cursor: pointer;
    transition: background .15s, color .15s, border-color .15s;
}

.par-view-toggle:hover,
.par-view-toggle:focus-visible,
.par-view-toggle-active {
    background: #e8f1ff;
    border-color: #8eb7ff;
    color: #1348b5;
}

.par-viewer-layout {
    display: flex;
    min-height: var(--par-layout-min-height, 72vh);
    background: var(--par-surface-alt);
}

.par-document-pane {
    flex: 1 1 auto;
    min-width: 0;
    padding: .75rem;
    background: #eef2f8;
    border-right: 1px solid var(--par-border);
    display: flex;
    flex-direction: column;
    gap: .75rem;
}

.par-document-frame {
    width: 100%;
    min-height: var(--par-document-min-height, 78vh);
    border: 1px solid rgba(3,2,19,.08);
    border-radius: var(--par-radius-sm);
    background: #fff;
    box-shadow: inset 0 0 0 1px rgba(3,2,19,.03);
}

.par-document-embed {
	width: 100%;
	height: 100%;
	min-height: var(--par-document-min-height, 78vh);
	display: block;
	border: 0;
}

.par-embedded-accessible-viewer {
	width: 100%;
}

.par-light-accessible-view-frame {
    width: 100%;
    min-height: var(--par-document-min-height, 78vh);
    border: 0;
    border-radius: var(--par-radius-sm);
    background: #fff;
    display: block;
}

.par-document-fallback {
    margin: 0;
    font-size: .8125rem;
    color: var(--par-muted-fg);
}

.par-document-fallback a {
    color: #1348b5;
}

.par-sidebar {
    flex: 0 0 320px;
    max-width: 340px;
    background: var(--par-surface);
    display: flex;
    flex-direction: column;
    min-width: 280px;
}

.par-accessible-viewer.par-has-document.par-sidebar-collapsed .par-sidebar {
	flex: 0 0 220px;
	max-width: 220px;
	min-width: 200px;
}

.par-accessible-viewer.par-has-document.par-sidebar-expanded .par-sidebar {
	flex: 0 0 340px;
	max-width: 420px;
}

.par-accessible-viewer.par-has-document.par-sidebar-collapsed .par-panel {
	display: none;
}

.par-accessible-viewer.par-has-document .par-viewer-tabs {
    flex-direction: column;
    align-items: stretch;
    padding: .75rem 0 0;
    background: var(--par-surface);
    border-bottom: 0;
    overflow: visible;
}

.par-accessible-viewer.par-has-document .par-panel {
    padding: 1rem 1.25rem 1.25rem;
    flex: 1 1 auto;
}

.par-accessible-viewer.par-has-document [id$="-transcript"].par-panel {
    min-height: 28rem;
}

.par-accessible-viewer.par-has-document .par-tab {
    width: 100%;
    text-align: left;
    padding: .85rem 1.25rem;
    border-bottom: 0;
    border-left: 3px solid transparent;
    margin-bottom: 0;
}

.par-accessible-viewer.par-has-document .par-tab-active,
.par-accessible-viewer.par-has-document .par-tab[aria-selected="true"] {
    background: #f7f5ff;
    border-left-color: var(--par-accent);
    border-bottom-color: transparent;
}

.par-accessible-viewer.par-bottom-tab-panels:not(.par-transcript-focus) .par-viewer-layout {
    display: block;
    min-height: 0;
}

.par-accessible-viewer.par-bottom-tab-panels:not(.par-transcript-focus) .par-document-pane {
    border-right: 0;
    border-bottom: 1px solid var(--par-border);
}

.par-accessible-viewer.par-bottom-tab-panels:not(.par-transcript-focus) .par-sidebar {
    display: block;
    max-width: none;
    min-width: 0;
    background: var(--par-surface);
}

.par-accessible-viewer.par-bottom-tab-panels:not(.par-transcript-focus) .par-viewer-tabs {
    flex-direction: row;
    align-items: center;
    padding: 0 1.5rem;
    background: var(--par-surface-alt);
    border-bottom: 1px solid var(--par-border);
    overflow-x: auto;
}

.par-accessible-viewer.par-bottom-tab-panels:not(.par-transcript-focus) .par-tab {
    width: auto;
    text-align: left;
    padding: .75rem 1.125rem;
    border-left: 0;
    border-bottom: 2px solid transparent;
}

.par-accessible-viewer.par-bottom-tab-panels:not(.par-transcript-focus) .par-tab-active,
.par-accessible-viewer.par-bottom-tab-panels:not(.par-transcript-focus) .par-tab[aria-selected="true"] {
    background: transparent;
    border-left-color: transparent;
    border-bottom-color: var(--par-accent);
}

.par-accessible-viewer.par-bottom-tab-panels:not(.par-transcript-focus) .par-panel {
    padding: 1.5rem;
    background: var(--par-surface);
}

.par-accessible-viewer.par-has-document [id$="-transcript"] .par-transcript {
    min-height: 24rem;
    max-height: 70vh;
}

.par-accessible-viewer.par-has-document .par-translate-output:not(:empty) {
    max-height: 62vh;
}

.par-accessible-viewer.par-transcript-focus .par-document-pane {
    display: none;
}

.par-accessible-viewer.par-transcript-focus .par-viewer-layout {
	display: block;
	min-height: 0;
}

.par-accessible-viewer.par-transcript-focus .par-sidebar {
    display: flex;
    flex-basis: 100%;
    width: 100%;
    max-width: none;
    min-width: 0;
}

.par-accessible-viewer.par-has-document.par-transcript-focus .par-sidebar {
	flex: 1 1 auto;
	max-width: none;
	min-width: 0;
}

/* ── Buttons ─────────────────────────────────────────────────────────────── */
.par-btn {
    display: inline-flex;
    align-items: center;
    gap: .375rem;
    padding: .5rem 1rem;
    border-radius: var(--par-radius-sm);
    font-size: .875rem;
    font-weight: 500;
    cursor: pointer;
    text-decoration: none;
    border: 1px solid transparent;
    line-height: 1.2;
    transition: background .15s, color .15s, border-color .15s;
}

.par-btn-primary {
    background: var(--par-accent);
    color: var(--par-primary-fg);
}
.par-btn-primary:hover,
.par-btn-primary:focus-visible {
    background: var(--par-accent-hover);
}

.par-btn-secondary {
    background: var(--par-surface);
    color: var(--par-primary);
    border-color: var(--par-border);
}
.par-btn-secondary:hover,
.par-btn-secondary:focus-visible {
    background: var(--par-muted);
}

/* ── Tabs ─────────────────────────────────────────────────────────────────── */
.par-viewer-tabs {
    display: flex;
    gap: 0;
    padding: 0 1.5rem;
    background: var(--par-surface-alt);
    border-bottom: 1px solid var(--par-border);
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

.par-tab {
    padding: .75rem 1.125rem;
    background: none;
    border: none;
    border-bottom: 2px solid transparent;
    cursor: pointer;
    font-size: .875rem;
    font-weight: 500;
    color: var(--par-muted-fg);
    white-space: nowrap;
    transition: color .15s, border-color .15s;
    margin-bottom: -1px;
}

.par-tab:hover {
    color: var(--par-primary);
}

.par-tab-active,
.par-tab[aria-selected="true"] {
    color: var(--par-accent);
    border-bottom-color: var(--par-accent);
}

/* ── Panels ─────────────────────────────────────────────────────────────── */
.par-panel {
    padding: 1.5rem;
    display: block;
}

.par-panel[hidden] {
    display: none;
}

/* ── Transcript ─────────────────────────────────────────────────────────── */
.par-transcript {
    max-height: 32rem;
    overflow-y: auto;
    line-height: 1.75;
    font-size: .9375rem;
    scroll-behavior: smooth;
}

.par-transcript article {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.par-transcript section {
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--par-muted);
}

.par-transcript section:last-child {
    padding-bottom: 0;
    border-bottom: 0;
}

.par-transcript h1,
.par-transcript h2,
.par-transcript h3,
.par-transcript h4,
.par-transcript h5,
.par-transcript h6 {
    margin: 1.25rem 0 .375rem;
    line-height: 1.3;
    font-weight: 700;
    color: var(--par-primary);
}

.par-transcript h1 { font-size: 1.375rem; }
.par-transcript h2 { font-size: 1.2rem; }
.par-transcript h3 { font-size: 1.0625rem; }
.par-transcript h4 { font-size: .9375rem; }
.par-transcript h5,
.par-transcript h6 { font-size: .875rem; text-transform: uppercase; letter-spacing: .03em; }

.par-transcript :is( h1, h2, h3, h4, h5, h6 ):first-child {
    margin-top: 0;
}

.par-transcript p {
    margin: 0 0 .875rem;
}

.par-transcript p:last-child {
    margin-bottom: 0;
}

.par-transcript ul,
.par-transcript ol {
    margin: 0 0 1rem 1.25rem;
    padding: 0;
}

.par-transcript li {
    margin-bottom: .35rem;
}

.par-transcript table {
    width: 100%;
    border-collapse: collapse;
    display: block;
    overflow-x: auto;
    margin: 0 0 1rem;
}

.par-transcript th,
.par-transcript td {
    padding: .625rem .75rem;
    border: 1px solid var(--par-border);
    text-align: left;
    vertical-align: top;
}

.par-transcript th {
    background: var(--par-muted);
    font-weight: 600;
}

.par-transcript figure {
    margin: 0 0 1rem;
    padding: .875rem 1rem;
    border-left: 3px solid var(--par-accent);
    background: var(--par-muted);
    border-radius: var(--par-radius-sm);
}

.par-transcript figcaption {
    font-size: .875rem;
    color: var(--par-muted-fg);
}

/* ── Outline ─────────────────────────────────────────────────────────────── */
.par-outline-list {
    list-style: none;
    margin: 0;
    padding: 0;
}

.par-outline-item {
    padding: .375rem 0 .375rem calc((var(--level, 1) - 1) * 1.25rem);
    font-size: .9rem;
    border-bottom: 1px solid var(--par-muted);
    line-height: 1.4;
}

/* CSS custom properties per level */
.par-outline-level-1 { --level: 1; font-weight: 600; }
.par-outline-level-2 { --level: 2; }
.par-outline-level-3 { --level: 3; color: var(--par-muted-fg); }
.par-outline-level-4 { --level: 4; color: var(--par-muted-fg); }

/* ── Translate ────────────────────────────────────────────────────────────── */
.par-translate-controls {
	display: flex;
	align-items: center;
	gap: .75rem;
	flex-wrap: wrap;
	margin-bottom: 1rem;
}

.par-translate-label {
	font-size: .875rem;
	font-weight: 500;
	white-space: nowrap;
}

.par-lang-select {
	padding: .5rem .75rem;
	border: 1px solid var(--par-border);
	border-radius: var(--par-radius-sm);
	font-size: .9375rem;
	font-family: var(--par-font);
	background: var(--par-surface);
	cursor: pointer;
	transition: border-color .15s, box-shadow .15s;
}

.par-lang-select:focus {
	outline: none;
	border-color: var(--par-accent);
	box-shadow: 0 0 0 3px rgba(108,71,255,.18);
}

.par-translate-output {
	min-height: 0;
}

.par-translate-output:not(:empty) {
	max-height: 32rem;
	overflow-y: auto;
	line-height: 1.75;
	font-size: .9375rem;
	scroll-behavior: smooth;
}

.par-translate-output p {
	margin: 0 0 .875rem;
}

.par-translate-output.par-loading::after {
	content: '';
	display: inline-block;
	width: .8em;
	height: .8em;
	border: 2px solid var(--par-accent);
	border-top-color: transparent;
	border-radius: 50%;
	animation: par-spin .7s linear infinite;
	vertical-align: middle;
	margin-left: .5em;
}

/* ── Ask a Question ─────────────────────────────────────────────────────── */
.par-ask-form {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    max-width: 640px;
}

.par-ask-field {
    display: flex;
    flex-direction: column;
    gap: .375rem;
}

.par-ask-field label {
    font-size: .875rem;
    font-weight: 500;
}

.par-question-input {
    padding: .5rem .75rem;
    border: 1px solid var(--par-border);
    border-radius: var(--par-radius-sm);
    font-size: .9375rem;
    font-family: var(--par-font);
    width: 100%;
    box-sizing: border-box;
    transition: border-color .15s, box-shadow .15s;
}

.par-question-input:focus {
    outline: none;
    border-color: var(--par-accent);
    box-shadow: 0 0 0 3px rgba(108,71,255,.18);
}

.par-ask-answer {
    margin-top: .5rem;
    min-height: 0;
    transition: min-height .2s;
}

.par-ask-answer:not(:empty) {
    padding: 1rem;
    background: var(--par-surface-alt);
    border: 1px solid var(--par-border);
    border-radius: var(--par-radius-sm);
    font-size: .9375rem;
    line-height: 1.65;
    white-space: pre-wrap;
}

.par-ask-answer.par-loading::after {
    content: '';
    display: inline-block;
    width: .8em;
    height: .8em;
    border: 2px solid var(--par-accent);
    border-top-color: transparent;
    border-radius: 50%;
    animation: par-spin .7s linear infinite;
    vertical-align: middle;
    margin-left: .5em;
}

@keyframes par-spin {
    to { transform: rotate(360deg); }
}

/* ── Notice ──────────────────────────────────────────────────────────────── */
.par-notice {
    padding: .75rem 1rem;
    border-radius: var(--par-radius-sm);
    font-size: .875rem;
    background: var(--par-surface-alt);
    border: 1px solid var(--par-border);
    color: var(--par-muted-fg);
    margin: 1rem 0 0;
}

.par-notice-warning {
    background: #fff9ea;
    border-color: #f0c040;
    color: #7a5700;
}

.par-remediation-callout {
    margin: 1rem 1.5rem 0;
    padding: 1rem 1.25rem;
    border-radius: var(--par-radius);
    border: 1px solid #bfd8ff;
    border-left: 4px solid #1348b5;
    background: #eef6ff;
    color: #12325f;
}

.par-remediation-callout__title {
    margin: 0;
    font-size: 1rem;
    line-height: 1.35;
}

.par-remediation-callout__body,
.par-remediation-callout__meta {
    margin: .625rem 0 0;
    font-size: .875rem;
    line-height: 1.6;
}

.par-remediation-callout__list {
    margin: .75rem 0 0 1.25rem;
    padding: 0;
    font-size: .875rem;
    line-height: 1.6;
}

.par-remediation-callout__list li {
    margin-bottom: .25rem;
}

.par-audit-summary {
    margin: 0 0 1rem;
    padding: .875rem 1rem;
    border-radius: var(--par-radius-sm);
    border: 1px solid #bfd8ff;
    background: #f5f9ff;
    color: #12325f;
}

.par-audit-summary--review {
    border-color: #f0c040;
    background: #fff9ea;
    color: #7a5700;
}

.par-audit-summary__title {
    margin: 0;
    font-size: .875rem;
    font-weight: 600;
}

.par-audit-summary__meta {
    margin: .5rem 0 0;
    font-size: .875rem;
    line-height: 1.5;
}

.par-audit-summary__list {
    margin: .625rem 0 0 1.25rem;
    padding: 0;
    font-size: .875rem;
    line-height: 1.5;
}

.par-audit-summary__list li {
    margin-bottom: .25rem;
}

/* ── Responsive ──────────────────────────────────────────────────────────── */
@media (max-width: 640px) {
    .par-viewer-header {
        flex-direction: column;
        align-items: flex-start;
    }
    .par-remediation-callout {
        margin: 1rem 1rem 0;
    }
    .par-view-mode-bar {
		padding: .875rem 1rem;
	}
    .par-viewer-tabs {
        padding: 0 1rem;
    }
    .par-panel {
        padding: 1rem;
    }
    .par-transcript {
        max-height: 24rem;
    }
    .par-accessible-viewer.par-has-document [id$="-transcript"].par-panel {
        min-height: 20rem;
    }
    .par-accessible-viewer.par-has-document [id$="-transcript"] .par-transcript {
        min-height: 18rem;
        max-height: 24rem;
    }
}

@media (max-width: 1024px) {
    .par-viewer-layout {
        flex-direction: column;
        min-height: 0;
    }

    .par-document-pane {
        border-right: 0;
        border-bottom: 1px solid var(--par-border);
    }

    .par-document-frame {
        min-height: 26rem;
    }

    .par-document-embed {
        min-height: 26rem;
    }

    .par-sidebar {
        max-width: none;
        min-width: 0;
        flex-basis: auto;
    }

    .par-accessible-viewer.par-has-document.par-sidebar-collapsed .par-sidebar,
    .par-accessible-viewer.par-has-document.par-sidebar-expanded .par-sidebar {
        flex: 1 1 auto;
        width: 100%;
        max-width: none;
        min-width: 0;
    }

    .par-accessible-viewer.par-has-document .par-viewer-tabs {
        flex-direction: row;
        padding: 0 1rem;
        border-bottom: 1px solid var(--par-border);
    }

    .par-accessible-viewer.par-has-document .par-tab {
        width: auto;
        border-left: 0;
        border-bottom: 2px solid transparent;
    }

    .par-accessible-viewer.par-has-document .par-tab-active,
    .par-accessible-viewer.par-has-document .par-tab[aria-selected="true"] {
        border-left-color: transparent;
        border-bottom-color: var(--par-accent);
    }
}

/* ── High-contrast / forced-colors support ───────────────────────────────── */
@media (forced-colors: active) {
    .par-accessible-viewer {
        border: 1px solid ButtonText;
    }
    .par-tab-active,
    .par-tab[aria-selected="true"] {
        border-bottom-color: Highlight;
        color: Highlight;
    }
    .par-btn-primary {
        background: Highlight;
        color: HighlightText;
        border-color: Highlight;
    }
}