/*
 * AI Summarizer V13
 * M2.2 Design System
 *
 * Product UI primitives shared by the V13 frontend.
 */

:root {
    /*
     * Color system
     */

    --color-background: #f5f7fb;
    --color-background-subtle: #eef2f8;

    --color-surface: #ffffff;
    --color-surface-subtle: #f8fafc;
    --color-surface-muted: #f2f5f9;

    --color-text: #172033;
    --color-text-secondary: #475467;
    --color-text-muted: #697586;
    --color-text-subtle: #98a2b3;
    --color-text-on-primary: #ffffff;

    --color-border: #e1e7ef;
    --color-border-strong: #ccd5e1;

    --color-primary: #3157d5;
    --color-primary-hover: #2748b5;
    --color-primary-active: #203d9d;
    --color-primary-subtle: #eef3ff;

    --color-success: #18794e;
    --color-success-subtle: #edf9f3;

    --color-warning: #9a6700;
    --color-warning-subtle: #fff8e6;

    --color-error: #b42318;
    --color-error-subtle: #fff1f0;

    --color-info: #29489f;
    --color-info-subtle: #f1f5ff;

    /*
     * Typography
     */

    --font-family-sans:
        Inter,
        ui-sans-serif,
        system-ui,
        -apple-system,
        BlinkMacSystemFont,
        "Segoe UI",
        sans-serif;

    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-md: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 2rem;

    --font-weight-normal: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;

    --line-height-tight: 1.2;
    --line-height-heading: 1.3;
    --line-height-body: 1.55;
    --line-height-reading: 1.7;

    /*
     * Spacing
     */

    --space-1: 0.25rem;
    --space-2: 0.5rem;
    --space-3: 0.75rem;
    --space-4: 1rem;
    --space-5: 1.25rem;
    --space-6: 1.5rem;
    --space-7: 1.75rem;
    --space-8: 2rem;
    --space-10: 2.5rem;
    --space-12: 3rem;
    --space-16: 4rem;

    /*
     * Shape
     */

    --radius-sm: 0.5rem;
    --radius-md: 0.625rem;
    --radius-lg: 1rem;
    --radius-pill: 999px;

    /*
     * Elevation
     */

    --shadow-sm:
        0 1px 2px rgba(16, 24, 40, 0.04);

    --shadow-card:
        0 8px 30px rgba(23, 32, 51, 0.05);

    --shadow-focus:
        0 0 0 3px rgba(49, 87, 213, 0.16);

    /*
     * Layout
     */

    --content-width: 1180px;
    --reading-width: 720px;
    --header-height: 72px;

    /*
     * Motion
     */

    --transition-fast: 120ms ease;
    --transition-standard: 180ms ease;
}


/*
 * Base
 */

* {
    box-sizing: border-box;
}

html {
    min-height: 100%;
}

body {
    min-height: 100vh;
    margin: 0;

    background: var(--color-background);
    color: var(--color-text);

    font-family: var(--font-family-sans);
    font-size: var(--font-size-md);
    line-height: var(--line-height-body);

    -webkit-font-smoothing: antialiased;
    text-rendering: optimizeLegibility;
}

button,
textarea {
    font: inherit;
}

button {
    cursor: pointer;
}

button:disabled {
    cursor: not-allowed;
}

a {
    color: inherit;
}


/*
 * Application shell
 */

.app-shell {
    min-height: 100vh;

    display: flex;
    flex-direction: column;
}


/*
 * Header
 */

.app-header {
    background: var(--color-surface);
    border-bottom: 1px solid var(--color-border);
}

.header-content {
    width: min(
        var(--content-width),
        calc(100% - var(--space-12))
    );

    min-height: var(--header-height);

    margin: 0 auto;

    display: flex;
    align-items: center;
    justify-content: space-between;

    gap: var(--space-6);
}

.brand {
    display: inline-flex;
    align-items: center;

    gap: var(--space-3);

    color: inherit;
    text-decoration: none;

    border-radius: var(--radius-sm);
}

.brand:focus-visible {
    outline: 3px solid rgba(49, 87, 213, 0.25);
    outline-offset: 3px;
}

.brand-mark {
    width: 40px;
    height: 40px;

    display: inline-flex;
    align-items: center;
    justify-content: center;

    flex-shrink: 0;

    border-radius: var(--radius-md);

    background: var(--color-primary);
    color: var(--color-text-on-primary);

    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-bold);

    letter-spacing: 0.02em;
}

.brand-copy {
    display: flex;
    flex-direction: column;
}

.brand-name {
    font-weight: var(--font-weight-bold);
    line-height: var(--line-height-tight);
}

.brand-subtitle {
    margin-top: 2px;

    color: var(--color-text-muted);

    font-size: var(--font-size-xs);
}

.version-badge {
    padding:
        calc(var(--space-1) + 1px)
        calc(var(--space-2) + 1px);

    border: 1px solid var(--color-border-strong);
    border-radius: var(--radius-pill);

    background: var(--color-surface-subtle);
    color: var(--color-text-secondary);

    font-size: 0.72rem;
    font-weight: var(--font-weight-bold);

    letter-spacing: 0.04em;
}


/*
 * Main content
 *
 * .container remains a supported frontend contract.
 */

.container {
    width: min(
        var(--content-width),
        calc(100% - var(--space-12))
    );

    margin: 0 auto;
    padding: var(--space-16) 0;

    flex: 1;
}


/*
 * Workspace introduction
 */

.workspace-intro {
    max-width: var(--reading-width);

    margin-bottom:
        calc(var(--space-8) + var(--space-1));
}

.eyebrow,
.panel-kicker {
    margin: 0 0 var(--space-2);

    color: var(--color-primary);

    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-bold);

    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.workspace-intro h1 {
    max-width: 680px;

    margin: 0;

    font-size: clamp(
        var(--font-size-3xl),
        4vw,
        3.25rem
    );

    line-height: 1.08;
    letter-spacing: -0.035em;
}

.workspace-description {
    max-width: 640px;

    margin: calc(var(--space-4) + 2px) 0 0;

    color: var(--color-text-muted);

    font-size: var(--font-size-md);
}


/*
 * Workspace layout
 */

.workspace {
    display: grid;

    grid-template-columns:
        minmax(0, 1fr)
        minmax(0, 1fr);

    gap: var(--space-6);

    align-items: stretch;
}


/*
 * Panels
 */

.workspace-panel {
    min-width: 0;
    min-height: 520px;

    padding: var(--space-7);

    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);

    background: var(--color-surface);

    box-shadow: var(--shadow-card);
}

.panel-header {
    min-height: 58px;

    margin-bottom: calc(var(--space-5) + 2px);
    padding-bottom: calc(var(--space-4) + 2px);

    border-bottom: 1px solid var(--color-border);

    display: flex;
    align-items: flex-start;
    justify-content: space-between;

    gap: var(--space-5);
}

.panel-header h2 {
    margin: 0;

    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-semibold);

    line-height: var(--line-height-heading);
}

.panel-kicker {
    margin-bottom: var(--space-1);
}


/*
 * Forms
 */

.summary-form {
    display: flex;
    flex-direction: column;

    gap: var(--space-5);
}

.field-group {
    display: flex;
    flex-direction: column;
}

.field-group label {
    margin-bottom: calc(var(--space-1) + 1px);

    color: var(--color-text);

    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold);
}

.field-help {
    margin: 0 0 var(--space-3);

    color: var(--color-text-muted);

    font-size: 0.82rem;
}

textarea {
    width: 100%;
    min-height: 300px;

    resize: vertical;

    padding: var(--space-4);

    border: 1px solid var(--color-border-strong);
    border-radius: var(--radius-md);

    outline: none;

    background: var(--color-surface);
    color: var(--color-text);

    line-height: var(--line-height-body);

    box-shadow: var(--shadow-sm);

    transition:
        border-color var(--transition-fast),
        box-shadow var(--transition-fast),
        background-color var(--transition-fast);
}

textarea::placeholder {
    color: var(--color-text-subtle);
}

textarea:hover {
    border-color: #aeb8c6;
}

textarea:focus,
textarea:focus-visible {
    border-color: var(--color-primary);
    box-shadow: var(--shadow-focus);
}

textarea:disabled {
    background: var(--color-surface-muted);
    color: var(--color-text-muted);
}

.form-actions {
    display: flex;
    justify-content: flex-end;
}

/*
 * Input metrics and actions
 */

.input-toolbar {
    min-height: 44px;

    display: flex;
    align-items: center;
    justify-content: space-between;

    gap: var(--space-4);
}

.input-metrics {
    min-width: 0;

    display: flex;
    align-items: center;
    flex-wrap: wrap;

    gap: var(--space-2);

    color: var(--color-text-muted);

    font-size: var(--font-size-xs);
}

.input-metrics strong {
    color: var(--color-text-secondary);

    font-weight: var(--font-weight-semibold);
}

.metric-separator {
    color: var(--color-text-subtle);
}

.form-actions {
    display: flex;
    justify-content: flex-end;

    flex-shrink: 0;
}

/*
 * Buttons
 */

.primary-button {
    min-height: 44px;

    padding:
        calc(var(--space-2) + 2px)
        var(--space-5);

    border: 1px solid var(--color-primary);
    border-radius: var(--radius-md);

    background: var(--color-primary);
    color: var(--color-text-on-primary);

    font-weight: var(--font-weight-semibold);

    box-shadow: var(--shadow-sm);

    transition:
        background-color var(--transition-fast),
        border-color var(--transition-fast),
        box-shadow var(--transition-fast),
        transform var(--transition-fast);
}

.primary-button:hover:not(:disabled) {
    background: var(--color-primary-hover);
    border-color: var(--color-primary-hover);
}

.primary-button:focus-visible {
    outline: none;
    box-shadow: var(--shadow-focus);
}

.primary-button:active:not(:disabled) {
    background: var(--color-primary-active);
    border-color: var(--color-primary-active);

    transform: translateY(1px);
}

.primary-button:disabled {
    opacity: 0.58;
}

/*
 * Processing controls
 */

.primary-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;

    gap: var(--space-2);
}

.button-spinner {
    width: 16px;
    height: 16px;

    flex-shrink: 0;

    border: 2px solid rgba(255, 255, 255, 0.45);
    border-top-color: var(--color-text-on-primary);
    border-radius: var(--radius-pill);

    animation: button-spin 700ms linear infinite;
}

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

body[data-ui-state="loading"] textarea {
    background: var(--color-surface-subtle);
}

body[data-ui-state="loading"] .input-metrics {
    opacity: 0.75;
}

/*
 * Status messages
 */

.status-message,
.error-message {
    margin: var(--space-5) 0 0;

    padding: var(--space-3) var(--space-4);

    border-radius: var(--radius-sm);

    font-size: var(--font-size-sm);
}

.status-message {
    border: 1px solid #d8e2ff;

    background: var(--color-info-subtle);
    color: var(--color-info);
}

.error-message {
    border: 1px solid #ffd5d2;

    background: var(--color-error-subtle);
    color: var(--color-error);
}


/*
 * Result workspace
 */

.result-panel {
    display: flex;
    flex-direction: column;
}

.result-empty {
    min-height: 340px;

    flex: 1;

    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;

    padding: var(--space-8);

    text-align: center;
}

.empty-state-icon {
    width: 52px;
    height: 52px;

    margin-bottom: calc(var(--space-4) + 2px);
    padding: 13px 11px;

    border: 1px solid var(--color-border);
    border-radius: 0.75rem;

    background: var(--color-surface-subtle);
}

.empty-state-icon span {
    height: 3px;

    margin-bottom: 6px;

    display: block;

    border-radius: var(--radius-pill);

    background: #aeb7c5;
}

.empty-state-icon span:nth-child(2) {
    width: 75%;
}

.empty-state-icon span:nth-child(3) {
    width: 55%;
    margin-bottom: 0;
}

.empty-state-title {
    margin: 0;

    color: var(--color-text);

    font-weight: var(--font-weight-semibold);
}

.empty-state-description {
    max-width: 310px;

    margin: calc(var(--space-2) - 1px) 0 0;

    color: var(--color-text-muted);

    font-size: var(--font-size-sm);
}

.result-box {
    flex: 1;
}

/*
 * Execution metadata
 */

.execution-details {
    margin-top: var(--space-8);
    padding-top: calc(var(--space-5) + 2px);

    border-top: 1px solid var(--color-border);
}

.execution-details h3 {
    margin: 0 0 calc(var(--space-3) + 2px);

    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold);
}

.execution-details dl {
    margin: 0;

    display: grid;

    grid-template-columns:
        repeat(2, minmax(0, 1fr));

    gap: calc(var(--space-2) + 2px);
}

.detail-item {
    min-width: 0;

    padding:
        calc(var(--space-2) + 2px)
        var(--space-3);

    border: 1px solid transparent;
    border-radius: var(--radius-sm);

    background: var(--color-surface-muted);
}

.detail-item dt {
    color: var(--color-text-muted);

    font-size: 0.72rem;
    font-weight: var(--font-weight-semibold);

    text-transform: uppercase;
}

.detail-item dd {
    margin: 3px 0 0;

    overflow-wrap: anywhere;

    color: var(--color-text-secondary);

    font-size: 0.82rem;
    font-weight: var(--font-weight-semibold);
}


/*
 * Footer
 */

.app-footer {
    border-top: 1px solid var(--color-border);

    background: var(--color-surface);
}

.footer-content {
    width: min(
        var(--content-width),
        calc(100% - var(--space-12))
    );

    min-height: 64px;

    margin: 0 auto;

    display: flex;
    align-items: center;

    gap: var(--space-2);

    color: var(--color-text-muted);

    font-size: var(--font-size-xs);
}

.footer-separator {
    color: var(--color-text-subtle);
}


/*
 * Utilities
 */

.hidden {
    display: none !important;
}


/*
 * Responsive layout
 */

@media (max-width: 820px) {
    .header-content,
    .container,
    .footer-content {
        width: min(
            calc(100% - var(--space-8)),
            680px
        );
    }

    .container {
        padding:
            calc(var(--space-10) + var(--space-1))
            0;
    }

    .workspace {
        grid-template-columns: 1fr;
    }

    .workspace-panel {
        min-height: auto;
    }

    .result-empty {
        min-height: 260px;
    }

    .result-header {
        flex-direction: column;
    }

    .metadata-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 520px) {
    .brand-subtitle {
        display: none;
    }

    .container {
        padding: var(--space-8) 0;
    }

    .workspace-intro {
        margin-bottom:
            calc(var(--space-6) + var(--space-1));
    }

    .workspace-panel {
        padding: var(--space-5);

        border-radius: 0.75rem;
    }

    .workspace-intro h1 {
        font-size: var(--font-size-3xl);
    }

    textarea {
        min-height: 250px;
    }

    .input-toolbar {
        align-items: stretch;
        flex-direction: column;
    }

    .form-actions {
        width: 100%;
    }

    .primary-button {
        width: 100%;
    }

    .execution-details dl {
        grid-template-columns: 1fr;
    }

    .footer-content {
        min-height: 56px;

        flex-wrap: wrap;
    }
}


/*
 * Reduced motion
 */

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

/*
 * Result workspace
 */

.result-workspace {
    display: flex;
    flex-direction: column;
    gap: var(--space-5);
}

.result-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: var(--space-4);
}

.result-heading-group {
    display: flex;
    flex-direction: column;
    gap: var(--space-1);
}

.result-heading-group h2 {
    margin: 0;
}

.result-eyebrow {
    margin: 0;

    color: var(--color-text-muted);

    font-size: var(--font-size-sm);
    font-weight: 600;
    letter-spacing: 0.04em;
    text-transform: uppercase;
}

.result-status {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);

    flex-shrink: 0;

    padding: var(--space-2) var(--space-3);

    border: 1px solid var(--color-border);
    border-radius: var(--radius-pill);

    color: var(--color-text-muted);

    font-size: var(--font-size-sm);
    font-weight: 600;
}

.result-status-indicator {
    width: 8px;
    height: 8px;

    border-radius: var(--radius-pill);

    background: currentColor;
}

.summary-content {
    min-height: 12rem;

    padding: var(--space-5);

    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);

    background: var(--color-surface);
}

.summary-content:focus-visible {
    outline: 3px solid var(--color-focus);
    outline-offset: 3px;
}

.summary-content p {
    margin: 0;

    white-space: pre-wrap;
    overflow-wrap: anywhere;

    font-size: var(--font-size-base);
    line-height: 1.75;
}

.processing-details {
    padding-top: var(--space-4);

    border-top: 1px solid var(--color-border);
}

.processing-details-header {
    display: flex;
    flex-direction: column;
    gap: var(--space-1);

    margin-bottom: var(--space-4);
}

.processing-details-header h3,
.processing-details-header p {
    margin: 0;
}

.processing-details-header h3 {
    font-size: var(--font-size-base);
}

.processing-details-header p {
    color: var(--color-text-muted);
    font-size: var(--font-size-sm);
}

.metadata-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));

    gap: var(--space-3);

    margin: 0;
}

.metadata-item {
    min-width: 0;

    padding: var(--space-3);

    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);

    background: var(--color-surface-subtle);
}

.metadata-item dt {
    margin-bottom: var(--space-1);

    color: var(--color-text-muted);

    font-size: var(--font-size-sm);
    font-weight: 600;
}

.metadata-item dd {
    margin: 0;

    overflow-wrap: anywhere;

    font-weight: 600;
}

.summary-options {
    display: grid;
    gap: var(--space-4);
}

.form-field {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
}

.form-field label {
    color: var(--color-text);
    font-weight: 600;
}

.form-field select {
    width: 100%;

    padding: var(--space-3) var(--space-4);

    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);

    background: var(--color-surface);
    color: var(--color-text);

    font: inherit;
}

.form-field select:focus-visible {
    outline: 3px solid var(--color-focus);
    outline-offset: 2px;
}

.field-help {
    margin: 0;

    color: var(--color-text-muted);

    font-size: var(--font-size-sm);
    line-height: var(--line-height-normal);
}

.advanced-options {
    border-top: 1px solid var(--color-border);
    padding-top: var(--space-4);
}

.advanced-options summary {
    width: fit-content;
    cursor: pointer;
    color: var(--color-text);
    font-weight: 600;
}

.advanced-options summary:focus-visible {
    outline: 3px solid var(--color-focus);
    outline-offset: 3px;
    border-radius: var(--radius-sm);
}

.advanced-options-content {
    padding-top: var(--space-4);
}

.advanced-options textarea {
    width: 100%;
    min-height: 7rem;
    resize: vertical;
    padding: var(--space-3) var(--space-4);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    background: var(--color-surface);
    color: var(--color-text);
    font: inherit;
    line-height: var(--line-height-reading);
}

.advanced-options textarea:focus-visible {
    outline: 3px solid var(--color-focus);
    outline-offset: 2px;
}

.field-support {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: var(--space-3);
}

.field-count {
    flex-shrink: 0;
    margin: 0;
    color: var(--color-text-muted);
    font-size: var(--font-size-sm);
}

.result-details summary:focus-visible {
    outline: 3px solid var(--color-focus);
    outline-offset: 3px;

    border-radius: var(--radius-sm);
}

/*
 * V13 M4 viewport-density refinement
 *
 * Keep the complete desktop summarization workflow visible within a
 * practical laptop viewport while preserving responsive behavior.
 */

@media (min-width: 821px) {
    :root {
        --header-height: 56px;
    }

    .header-content {
        width: min(
            var(--content-width),
            calc(100% - var(--space-10))
        );
    }

    .brand-mark {
        width: 34px;
        height: 34px;
    }

    .container {
        width: min(
            var(--content-width),
            calc(100% - var(--space-10))
        );

        padding:
            calc(var(--space-6) + var(--space-1))
            0
            var(--space-6);
    }

    .workspace-intro {
        margin-bottom: var(--space-5);
    }

    .workspace-intro h1 {
        max-width: 760px;

        font-size: clamp(
            1.9rem,
            3vw,
            2.6rem
        );
    }

    .workspace-description {
        margin-top: var(--space-2);
    }

    .workspace {
        gap: var(--space-5);
    }

    .workspace-panel {
        min-height: 0;

        padding:
            var(--space-5)
            var(--space-6);
    }

    .panel-header {
        min-height: 0;

        margin-bottom: var(--space-4);
        padding-bottom: var(--space-3);
    }

    .summary-form {
        gap: var(--space-3);
    }

    .field-group label {
        margin-bottom: var(--space-1);
    }

    .field-help {
        margin-bottom: var(--space-2);
    }

    #inputText {
        min-height: 210px;
        height: clamp(210px, 28vh, 260px);

        padding: var(--space-3);
    }

    .input-metrics {
        min-height: 20px;
    }

    .summary-options {
        grid-template-columns:
            repeat(3, minmax(0, 1fr));

        align-items: start;

        gap: var(--space-3);
    }

    .summary-options > .form-field {
        min-width: 0;
    }

    .summary-options .form-field {
        gap: var(--space-1);
    }

    .summary-options .form-field select {
        min-height: 40px;

        padding:
            var(--space-2)
            var(--space-3);
    }

    .summary-options .field-help {
        font-size: var(--font-size-xs);
        line-height: 1.35;
    }

    .advanced-options {
        grid-column: 1 / -1;

        padding-top: var(--space-3);
    }

    .advanced-options-content {
        padding-top: var(--space-3);
    }

    .advanced-options textarea {
        min-height: 6rem;
    }

    .input-toolbar {
        min-height: 40px;

        justify-content: flex-end;

        gap: var(--space-3);
    }

    .primary-button {
        min-height: 40px;

        padding:
            var(--space-2)
            var(--space-5);
    }

    .result-empty {
        min-height: 0;
        height: 100%;

        padding: var(--space-6);
    }

    .app-footer {
        margin-top: auto;
    }

    .footer-content {
        width: min(
            var(--content-width),
            calc(100% - var(--space-10))
        );

        min-height: 48px;
    }
}


@media (min-width: 821px) and (max-height: 800px) {
    .container {
        padding:
            var(--space-4)
            0;
    }

    .workspace-intro {
        margin-bottom: var(--space-4);
    }

    .workspace-intro .eyebrow {
        margin-bottom: var(--space-1);
    }

    .workspace-intro h1 {
        font-size: 1.85rem;
    }

    .workspace-description {
        margin-top: var(--space-1);

        font-size: var(--font-size-sm);
    }

    .workspace-panel {
        padding:
            var(--space-4)
            var(--space-5);
    }

    .panel-header {
        margin-bottom: var(--space-3);
        padding-bottom: var(--space-2);
    }

    #inputText {
        min-height: 180px;
        height: 23vh;
    }

    .summary-form {
        gap: var(--space-2);
    }

    .summary-options {
        gap: var(--space-2);
    }

    .summary-options .field-help {
        margin-bottom: 0;
    }

    .advanced-options {
        padding-top: var(--space-2);
    }

    .footer-content {
        min-height: 42px;
    }
}


@media (min-width: 821px) and (max-width: 1040px) {
    .summary-options {
        grid-template-columns:
            repeat(2, minmax(0, 1fr));
    }

    .summary-options > .form-field:last-of-type {
        grid-column: 1 / -1;
    }
}


/*
 * V13 M5.5 File ingestion
 */

.file-ingestion {
    padding: var(--space-4);

    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);

    background: var(--color-surface-subtle);
}

.file-ingestion-heading {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;

    gap: var(--space-4);
}

.file-ingestion-heading h3,
.file-ingestion-heading p {
    margin: 0;
}

.file-ingestion-heading h3 {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold);
}

.file-ingestion-heading p {
    margin-top: var(--space-1);

    color: var(--color-text-muted);

    font-size: var(--font-size-xs);
}

.secondary-button {
    min-height: 38px;

    padding:
        var(--space-2)
        var(--space-3);

    flex-shrink: 0;

    border: 1px solid var(--color-border-strong);
    border-radius: var(--radius-md);

    background: var(--color-surface);
    color: var(--color-text-secondary);

    font-weight: var(--font-weight-semibold);
}

.secondary-button:hover:not(:disabled) {
    border-color: var(--color-primary);
    color: var(--color-primary);
}

.secondary-button:focus-visible,
.text-button:focus-visible,
.file-drop-zone:focus-visible {
    outline: none;
    box-shadow: var(--shadow-focus);
}

.secondary-button:disabled,
.text-button:disabled {
    cursor: not-allowed;
    opacity: 0.58;
}

.file-drop-zone {
    min-height: 82px;

    margin-top: var(--space-3);
    padding: var(--space-3);

    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;

    gap: var(--space-1);

    border: 1px dashed var(--color-border-strong);
    border-radius: var(--radius-md);

    background: var(--color-surface);

    text-align: center;

    transition:
        border-color var(--transition-fast),
        background-color var(--transition-fast),
        box-shadow var(--transition-fast);
}

.file-drop-zone:hover:not(.is-disabled),
.file-drop-zone.is-dragging {
    border-color: var(--color-primary);
    background: var(--color-primary-subtle);
}

.file-drop-zone:not(.is-disabled) {
    cursor: pointer;
}

.file-drop-zone.is-disabled {
    cursor: not-allowed;
    opacity: 0.65;
}

.file-drop-zone strong {
    font-size: var(--font-size-sm);
}

.file-drop-zone span {
    color: var(--color-text-muted);
    font-size: var(--font-size-xs);
}

.file-ingestion-help {
    margin:
        var(--space-2)
        0
        0;
}

.file-status {
    margin-top: var(--space-3);
    padding: var(--space-2) var(--space-3);

    display: flex;
    align-items: center;
    justify-content: space-between;

    gap: var(--space-3);

    border: 1px solid #d8e2ff;
    border-radius: var(--radius-sm);

    background: var(--color-info-subtle);
    color: var(--color-info);

    font-size: var(--font-size-xs);
}

.file-status span {
    min-width: 0;
    overflow-wrap: anywhere;
}

.text-button {
    padding: var(--space-1) var(--space-2);

    flex-shrink: 0;

    border: 0;
    border-radius: var(--radius-sm);

    background: transparent;
    color: inherit;

    font: inherit;
    font-weight: var(--font-weight-semibold);
}

.text-button:hover:not(:disabled) {
    background: rgba(49, 87, 213, 0.08);
}

.file-error {
    margin:
        var(--space-3)
        0
        0;

    padding: var(--space-2) var(--space-3);

    border: 1px solid #ffd5d2;
    border-radius: var(--radius-sm);

    background: var(--color-error-subtle);
    color: var(--color-error);

    font-size: var(--font-size-xs);
}

.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;
}

@media (min-width: 821px) {
    .file-ingestion {
        padding: var(--space-3);
    }

    .file-drop-zone {
        min-height: 64px;
        margin-top: var(--space-2);
        padding: var(--space-2);
    }

    .file-ingestion-help {
        margin-top: var(--space-1);
    }
}

@media (min-width: 821px) and (max-height: 800px) {
    .file-ingestion {
        padding: var(--space-2) var(--space-3);
    }

    .file-drop-zone {
        min-height: 52px;
    }
}

@media (max-width: 520px) {
    .file-ingestion-heading {
        align-items: stretch;
        flex-direction: column;
    }

    .secondary-button {
        width: 100%;
    }

    .file-status {
        align-items: flex-start;
        flex-direction: column;
    }
}


/*
 * V13 M6.2 Result actions
 */

.result-actions {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--space-3);
}

.result-action-button {
    flex-shrink: 0;
}

.result-action-status {
    min-height: 1.25rem;

    color: var(--color-text-muted);

    font-size: var(--font-size-sm);
}

@media (max-width: 520px) {
    .result-actions {
        align-items: stretch;
        flex-direction: column;
    }

    .result-action-button {
        width: 100%;
    }
}

/*
 * V13 M6.5 Collapsible result details
 */

.result-details {
    margin: 0;
}

.result-details > summary {
    width: fit-content;

    cursor: pointer;

    color: var(--color-text);

    font-size: var(--font-size-md);
    font-weight: var(--font-weight-semibold);
}

.result-details > summary:focus-visible {
    outline: none;
    box-shadow: var(--shadow-focus);
    border-radius: var(--radius-sm);
}

.processing-details-content {
    padding-top: var(--space-3);
}

.processing-details-content > p {
    margin: 0 0 var(--space-4);

    color: var(--color-text-muted);

    font-size: var(--font-size-sm);
}