/**
 * KiemLai Universe — Wiki Reader Contribution UX & Selection Toolbar Styles (MS-05H5)
 *
 * Responsibilities:
 * 1. Top action bar "Góp ý" button (.wiki-contribute-btn).
 * 2. Floating text-selection toolbar (.wiki-selection-toolbar) with [Tra cứu] and [Góp ý] actions.
 * 3. Reader contribution modal (.wiki-contribution-modal) with accessible dialog, preview block,
 *    type selector, message textarea with counter, dynamic sources list, status alerts, and buttons.
 * 4. Contextual Wiki lookup presentation container (.wiki-contextual-lookup-container).
 */

/* =========================================================
   1. TOP ACTION BAR BUTTON
   ========================================================= */

.wiki-contribute-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.375rem;
    padding: 0.4375rem 0.875rem;
    font-size: 0.875rem;
    font-weight: 500;
    line-height: 1.25rem;
    color: var(--text-secondary, #64748b);
    background-color: var(--surface-bg, #ffffff);
    border: 1px solid var(--border-color, #e2e8f0);
    border-radius: 0.5rem;
    cursor: pointer;
    user-select: none;
    transition: color 0.15s ease, background-color 0.15s ease, border-color 0.15s ease, transform 0.1s ease;
}

.wiki-contribute-btn:hover {
    color: var(--primary-color, #0284c7);
    border-color: var(--primary-color, #0284c7);
    background-color: var(--surface-hover, #f8fafc);
}

.wiki-contribute-btn:active {
    transform: scale(0.97);
}

.wiki-contribute-btn:focus-visible {
    outline: 2px solid var(--primary-color, #0284c7);
    outline-offset: 2px;
}

.wiki-contribute-btn .wiki-contribute-icon {
    width: 1.125rem;
    height: 1.125rem;
    flex-shrink: 0;
}

@media (max-width: 767.98px) {
    .wiki-contribute-btn {
        height: 34px;
        padding: 0 8px;
        font-size: 0.8125rem;
        gap: 4px;
        white-space: nowrap;
    }

    .wiki-contribute-btn .wiki-contribute-icon {
        width: 1rem;
        height: 1rem;
    }
}

/* =========================================================
   2. FLOATING TEXT-SELECTION TOOLBAR
   ========================================================= */

.wiki-selection-toolbar {
    position: fixed;
    z-index: 1060;
    display: inline-flex;
    align-items: center;
    background-color: #1e293b;
    border: 1px solid #334155;
    border-radius: 9999px;
    box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.4), 0 8px 10px -6px rgba(0, 0, 0, 0.3);
    padding: 3px;
    user-select: none;
    pointer-events: auto;
    opacity: 0;
    visibility: hidden;
    transform: translateY(6px);
    transition: opacity 0.15s ease, transform 0.15s ease, visibility 0.15s ease;
}

.wiki-selection-toolbar.is-visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.wiki-selection-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 12px;
    background: transparent;
    color: #f1f5f9;
    border: none;
    border-radius: 9999px;
    font-size: 13px;
    font-weight: 500;
    line-height: 1;
    cursor: pointer;
    white-space: nowrap;
    transition: background-color 0.15s ease, color 0.15s ease;
}

.wiki-selection-btn:hover {
    background-color: #334155;
    color: #38bdf8;
}

.wiki-selection-btn:active {
    transform: scale(0.96);
}

.wiki-selection-btn:focus-visible {
    outline: 2px solid #38bdf8;
    outline-offset: 2px;
}

.wiki-selection-btn svg {
    width: 14px;
    height: 14px;
    flex-shrink: 0;
}

.wiki-selection-divider {
    width: 1px;
    height: 16px;
    background-color: #475569;
    margin: 0 2px;
}

/* Mobile Selection Toolbar Positioning (<= 640px) */
@media (max-width: 640px) {
    .wiki-selection-toolbar {
        top: auto !important;
        bottom: calc(20px + env(safe-area-inset-bottom, 0px)) !important;
        left: 50% !important;
        transform: translateX(-50%) translateY(10px);
        padding: 4px;
        box-shadow: 0 12px 30px rgba(0, 0, 0, 0.5);
    }

    .wiki-selection-toolbar.is-visible {
        transform: translateX(-50%) translateY(0);
    }

    .wiki-selection-btn {
        padding: 8px 14px;
        font-size: 13.5px;
    }
}

/* =========================================================
   3. READER CONTRIBUTION MODAL
   ========================================================= */

.wiki-contribution-modal {
    position: fixed;
    inset: 0;
    z-index: 1070;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow-x: hidden;
    overflow-y: auto;
    padding: 1rem;
    outline: 0;
}

.wiki-contribution-modal[hidden] {
    display: none !important;
}

.wiki-contribution-backdrop {
    position: fixed;
    inset: 0;
    background-color: rgba(15, 23, 42, 0.65);
    backdrop-filter: blur(3px);
    -webkit-backdrop-filter: blur(3px);
    z-index: 0;
    transition: opacity 0.2s ease;
}

.wiki-contribution-dialog {
    position: relative;
    z-index: 1;
    width: 100%;
    max-width: 38rem;
    margin: auto;
    pointer-events: auto;
    animation: wikiModalSlideIn 0.2s ease-out;
}

@keyframes wikiModalSlideIn {
    from {
        opacity: 0;
        transform: scale(0.97) translateY(8px);
    }
    to {
        opacity: 1;
        transform: scale(1) translateY(0);
    }
}

.wiki-contribution-content {
    background-color: var(--surface-bg, #ffffff);
    color: var(--text-primary, #0f172a);
    border: 1px solid var(--border-color, #e2e8f0);
    border-radius: 0.75rem;
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.2), 0 10px 10px -5px rgba(0, 0, 0, 0.1);
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

/* Modal Header */
.wiki-contribution-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem 1.25rem;
    border-bottom: 1px solid var(--border-color, #e2e8f0);
}

.wiki-contribution-title {
    font-size: 1.125rem;
    font-weight: 600;
    line-height: 1.5;
    margin: 0;
    color: var(--text-primary, #0f172a);
}

.wiki-contribution-close-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.375rem;
    background: transparent;
    border: none;
    border-radius: 0.375rem;
    color: var(--text-secondary, #64748b);
    cursor: pointer;
    transition: background-color 0.15s ease, color 0.15s ease;
}

.wiki-contribution-close-btn:hover {
    background-color: var(--surface-hover, #f1f5f9);
    color: var(--text-primary, #0f172a);
}

/* Modal Body */
.wiki-contribution-body {
    padding: 1.25rem;
    display: flex;
    flex-direction: column;
    gap: 1rem;
    max-height: calc(85vh - 120px);
    overflow-y: auto;
}

/* Selection Preview */
.wiki-contribution-selection-preview {
    background-color: var(--surface-subtle, #f8fafc);
    border-left: 3px solid var(--primary-color, #0284c7);
    border-radius: 0 0.375rem 0.375rem 0;
    padding: 0.75rem 1rem;
}

.wiki-contribution-selection-preview[hidden] {
    display: none !important;
}

.wiki-contribution-preview-label {
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--primary-color, #0284c7);
    margin-bottom: 0.375rem;
}

.wiki-contribution-blockquote {
    font-size: 0.875rem;
    line-height: 1.5;
    color: var(--text-secondary, #475569);
    font-style: italic;
    margin: 0;
    word-break: break-word;
    max-height: 6rem;
    overflow-y: auto;
}

.wiki-contribution-anchor-hint {
    font-size: 0.75rem;
    color: var(--text-muted, #94a3b8);
    margin-top: 0.375rem;
}

.wiki-contribution-anchor-hint[hidden] {
    display: none !important;
}

/* Form Fields */
.wiki-contribution-field {
    display: flex;
    flex-direction: column;
    gap: 0.375rem;
}

.wiki-contribution-field-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.wiki-contribution-label {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-primary, #0f172a);
    margin: 0;
}

.wiki-contribution-counter {
    font-size: 0.75rem;
    color: var(--text-muted, #94a3b8);
    font-variant-numeric: tabular-nums;
}

.wiki-contribution-select,
.wiki-contribution-textarea,
.wiki-contribution-source-input {
    width: 100%;
    padding: 0.5rem 0.75rem;
    font-size: 0.875rem;
    line-height: 1.5;
    color: var(--text-primary, #0f172a);
    background-color: var(--surface-bg, #ffffff);
    border: 1px solid var(--border-color, #cbd5e1);
    border-radius: 0.375rem;
    transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.wiki-contribution-select:focus,
.wiki-contribution-textarea:focus,
.wiki-contribution-source-input:focus {
    outline: none;
    border-color: var(--primary-color, #0284c7);
    box-shadow: 0 0 0 3px rgba(2, 132, 199, 0.15);
}

.wiki-contribution-textarea {
    resize: vertical;
    min-height: 5.5rem;
}

.wiki-contribution-hint {
    font-size: 0.75rem;
    color: var(--text-muted, #94a3b8);
}

/* Sources List */
.wiki-contribution-sources-list {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.wiki-contribution-source-row {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.wiki-contribution-remove-source-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.5rem;
    color: #ef4444;
    background: transparent;
    border: 1px solid var(--border-color, #e2e8f0);
    border-radius: 0.375rem;
    cursor: pointer;
    transition: background-color 0.15s ease, border-color 0.15s ease;
}

.wiki-contribution-remove-source-btn:hover {
    background-color: #fee2e2;
    border-color: #fca5a5;
}

.wiki-contribution-add-source-btn {
    align-self: flex-start;
    padding: 0.375rem 0.75rem;
    font-size: 0.8125rem;
    font-weight: 500;
    color: var(--primary-color, #0284c7);
    background: transparent;
    border: 1px dashed var(--primary-color, #0284c7);
    border-radius: 0.375rem;
    cursor: pointer;
    transition: background-color 0.15s ease;
}

.wiki-contribution-add-source-btn:hover {
    background-color: var(--surface-subtle, #f0f9ff);
}

.wiki-contribution-add-source-btn[disabled] {
    opacity: 0.5;
    cursor: not-allowed;
    border-color: var(--border-color, #cbd5e1);
    color: var(--text-muted, #94a3b8);
}

/* Status Alert */
.wiki-contribution-status {
    padding: 0.75rem 1rem;
    border-radius: 0.375rem;
    font-size: 0.875rem;
    line-height: 1.4;
}

.wiki-contribution-status[hidden] {
    display: none !important;
}

.wiki-contribution-status--success {
    background-color: #f0fdf4;
    color: #166534;
    border: 1px solid #bbf7d0;
}

.wiki-contribution-status--error {
    background-color: #fef2f2;
    color: #991b1b;
    border: 1px solid #fecaca;
}

/* Modal Footer */
.wiki-contribution-footer {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: 0.75rem;
    padding: 0.875rem 1.25rem;
    border-top: 1px solid var(--border-color, #e2e8f0);
    background-color: var(--surface-subtle, #f8fafc);
}

.wiki-contribution-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.5rem 1.125rem;
    font-size: 0.875rem;
    font-weight: 500;
    line-height: 1.25rem;
    border-radius: 0.375rem;
    cursor: pointer;
    transition: background-color 0.15s ease, border-color 0.15s ease, opacity 0.15s ease;
}

.wiki-contribution-btn--primary {
    color: #ffffff;
    background-color: var(--primary-color, #0284c7);
    border: 1px solid var(--primary-color, #0284c7);
}

.wiki-contribution-btn--primary:hover:not([disabled]) {
    background-color: #0369a1;
    border-color: #0369a1;
}

.wiki-contribution-btn--secondary {
    color: var(--text-secondary, #475569);
    background-color: var(--surface-bg, #ffffff);
    border: 1px solid var(--border-color, #cbd5e1);
}

.wiki-contribution-btn--secondary:hover:not([disabled]) {
    background-color: var(--surface-hover, #f1f5f9);
    color: var(--text-primary, #0f172a);
}

.wiki-contribution-btn[disabled] {
    opacity: 0.6;
    cursor: not-allowed;
}

/* =========================================================
   4. CONTEXTUAL WIKI LOOKUP PRESENTATION
   ========================================================= */

.wiki-contextual-lookup-backdrop {
    position: fixed;
    inset: 0;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: 1061;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.2s ease, visibility 0.2s ease;
    backdrop-filter: blur(2px);
    -webkit-backdrop-filter: blur(2px);
}

.wiki-contextual-lookup-backdrop.is-visible {
    opacity: 1;
    visibility: visible;
}

.wiki-contextual-lookup-container {
    position: fixed;
    z-index: 1062;
    width: 390px;
    max-width: calc(100vw - 32px);
    max-height: 480px;
    background-color: var(--surface-bg, #ffffff);
    color: var(--text-primary, #0f172a);
    border: 1px solid var(--border-color, #cbd5e1);
    border-radius: 0.75rem;
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.25), 0 8px 10px -6px rgba(0, 0, 0, 0.15);
    display: flex;
    flex-direction: column;
    overflow: hidden;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.15s ease, transform 0.15s ease, visibility 0.15s ease;
}

.wiki-contextual-lookup-container.is-visible {
    opacity: 1;
    visibility: visible;
}

.wiki-contextual-lookup-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.75rem 1rem;
    border-bottom: 1px solid var(--border-color, #e2e8f0);
    background-color: var(--surface-subtle, #f8fafc);
}

.wiki-contextual-lookup-header-title {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--primary-color, #0284c7);
}

.wiki-contextual-lookup-header-title svg {
    width: 1rem;
    height: 1rem;
}

.wiki-contextual-lookup-close-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.25rem;
    background: transparent;
    border: none;
    border-radius: 0.25rem;
    color: var(--text-secondary, #64748b);
    cursor: pointer;
}

.wiki-contextual-lookup-close-btn:hover {
    color: var(--text-primary, #0f172a);
}

.wiki-contextual-lookup-body {
    padding: 1rem;
    overflow-y: auto;
    font-size: 0.875rem;
    line-height: 1.5;
}

.wiki-contextual-lookup-loading,
.wiki-contextual-lookup-empty,
.wiki-contextual-lookup-error {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 1.5rem 1rem;
    gap: 0.75rem;
    color: var(--text-secondary, #64748b);
}

.wiki-contextual-lookup-spinner {
    width: 2rem;
    height: 2rem;
    border: 3px solid rgba(2, 132, 199, 0.2);
    border-top-color: var(--primary-color, #0284c7);
    border-radius: 50%;
    animation: wikiLookupSpin 0.8s linear infinite;
}

@keyframes wikiLookupSpin {
    to { transform: rotate(360deg); }
}

.wiki-contextual-lookup-primary-card {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.wiki-contextual-lookup-card-meta {
    display: flex;
    align-items: center;
    gap: 0.375rem;
    flex-wrap: wrap;
}

.wiki-contextual-lookup-type-badge {
    display: inline-block;
    padding: 0.125rem 0.5rem;
    font-size: 0.6875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    background-color: var(--primary-light, #e0f2fe);
    color: var(--primary-dark, #0369a1);
    border-radius: 9999px;
}

.wiki-contextual-lookup-card-title {
    font-size: 1.125rem;
    font-weight: 600;
    margin: 0;
    color: var(--text-primary, #0f172a);
}

.wiki-contextual-lookup-card-summary {
    font-size: 0.8125rem;
    color: var(--text-secondary, #475569);
    margin: 0;
    line-height: 1.5;
    display: -webkit-box;
    -webkit-line-clamp: 4;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.wiki-contextual-lookup-article-link {
    display: inline-flex;
    align-items: center;
    gap: 0.375rem;
    font-size: 0.8125rem;
    font-weight: 500;
    color: var(--primary-color, #0284c7);
    text-decoration: none;
    margin-top: 0.5rem;
}

.wiki-contextual-lookup-article-link:hover {
    text-decoration: underline;
}

.wiki-contextual-lookup-secondary-section {
    margin-top: 1rem;
    padding-top: 0.75rem;
    border-top: 1px solid var(--border-color, #e2e8f0);
}

.wiki-contextual-lookup-secondary-heading {
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-muted, #94a3b8);
    margin-bottom: 0.5rem;
}

.wiki-contextual-lookup-secondary-list {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: 0.375rem;
}

.wiki-contextual-lookup-secondary-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.375rem 0.5rem;
    border-radius: 0.375rem;
    text-decoration: none;
    color: var(--text-primary, #0f172a);
    font-size: 0.8125rem;
    transition: background-color 0.15s ease;
}

.wiki-contextual-lookup-secondary-item:hover {
    background-color: var(--surface-subtle, #f1f5f9);
    color: var(--primary-color, #0284c7);
}

/* Mobile Bottom Sheet for Contextual Lookup */
@media (max-width: 640px) {
    .wiki-contextual-lookup-container {
        top: auto !important;
        bottom: 0 !important;
        left: 0 !important;
        right: 0 !important;
        width: 100% !important;
        max-width: 100% !important;
        max-height: 70vh !important;
        border-radius: 1rem 1rem 0 0 !important;
        transform: translateY(100%);
    }

    .wiki-contextual-lookup-container.is-visible {
        transform: translateY(0);
    }
}

/* =========================================================
   5. DISABLED BUTTONS & TOAST NOTIFICATION
   ========================================================= */

.wiki-selection-btn:disabled,
.wiki-selection-btn.is-disabled {
    opacity: 0.45;
    cursor: not-allowed;
    pointer-events: none;
}

.wiki-contribution-toast {
    position: fixed;
    bottom: 24px;
    left: 50%;
    transform: translateX(-50%) translateY(20px);
    z-index: 1080;
    padding: 10px 18px;
    background-color: #1e293b;
    color: #f8fafc;
    border: 1px solid #475569;
    border-radius: 8px;
    font-size: 13.5px;
    font-weight: 500;
    box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.4);
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.2s ease, transform 0.2s ease, visibility 0.2s ease;
    pointer-events: none;
}

.wiki-contribution-toast.is-visible {
    opacity: 1;
    visibility: visible;
    transform: translateX(-50%) translateY(0);
}