/**
 * Bilingual Forms Styles - Enhanced Language Mode Selector
 *
 * Styling for the improved bilingual form fields with language mode selection
 *
 * CRITICAL FIX (2026-04-07): Proper show/hide rules for language modes
 * - Single-language mode: only primary inputs visible
 * - Advanced mode: both languages + per-field buttons
 * - Review mode: side-by-side review panels
 *
 * @package Tajheez
 * @version 2.1.0
 */

/* ==========================================================================
   Language Mode Selector Component
   ========================================================================== */

.tajheez-language-mode-selector {
    margin-bottom: var(--space-8, 2rem);
    padding: var(--space-6, 1.5rem);
    background: var(--color-pearl, #F8F5F2);
    border-radius: var(--radius-lg, 0.75rem);
}

.language-mode-selector__label {
    display: block;
    font-size: var(--text-lg, 1.125rem);
    font-weight: 700;
    color: var(--color-text, #1a1a1a);
    margin-bottom: var(--space-2, 0.5rem);
}

.language-mode-selector__help {
    font-size: var(--text-sm, 0.875rem);
    color: var(--color-charcoal, #4A4543);
    margin-bottom: var(--space-5, 1.25rem);
    line-height: 1.5;
}

.language-mode-options {
    display: grid;
    gap: var(--space-3, 0.75rem);
    grid-template-columns: 1fr;
}

/* Language Mode Option Cards */
.language-mode-option {
    position: relative;
    display: block;
    padding: var(--space-4, 1rem);
    background: var(--color-white, #ffffff);
    border: 2px solid var(--color-sand, #EDE9E3);
    border-radius: var(--radius-md, 0.5rem);
    cursor: pointer;
    transition: all 0.2s ease;
}

.language-mode-option:hover {
    border-color: var(--color-primary, #652C8F);
    box-shadow: 0 4px 12px rgba(101, 44, 143, 0.1);
    transform: translateY(-2px);
}

.language-mode-option--selected {
    border-color: var(--color-primary, #652C8F);
    background: rgba(101, 44, 143, 0.05);
    box-shadow: 0 0 0 4px rgba(101, 44, 143, 0.1);
}

.language-mode-option__input {
    position: absolute;
    opacity: 0;
    pointer-events: none;
}

.language-mode-option__content {
    display: flex;
    align-items: center;
    gap: var(--space-3, 0.75rem);
}

.language-mode-option__icon {
    font-size: 1.5rem;
    flex-shrink: 0;
}

.language-mode-option__text {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.language-mode-option__title {
    font-weight: 600;
    color: var(--color-text, #1a1a1a);
    font-size: var(--text-base, 1rem);
}

.language-mode-option__subtitle {
    font-size: var(--text-sm, 0.875rem);
    color: var(--color-charcoal, #4A4543);
}

/* Tablet and Desktop - Side-by-side options */
@media (min-width: 768px) {
    .language-mode-options {
        grid-template-columns: repeat(3, 1fr);
    }
}

/* ==========================================================================
   Bilingual Field States
   ========================================================================== */

.bilingual-field {
    margin-bottom: var(--space-6, 1.5rem);
}

.bilingual-field__label {
    display: block;
    font-size: var(--text-sm, 0.875rem);
    font-weight: 600;
    color: var(--color-text, #1a1a1a);
    margin-bottom: var(--space-3, 0.75rem);
}

.required-indicator {
    color: var(--color-error, #dc2626);
    margin-left: 0.25rem;
}

/* Single Language Input Mode */
.single-language-input {
    display: none;
}

.language-mode--single .single-language-input {
    display: block;
}

.language-mode--single .dual-language-input,
.language-mode--single .translation-review {
    display: none;
}

/* Dual Language Input Mode (Advanced) */
.dual-language-input {
    display: none;
}

.language-mode--dual .dual-language-input {
    display: block;
}

.language-mode--dual .single-language-input,
.language-mode--dual .translation-review {
    display: none;
}

/* Translation Review Mode */
.translation-review {
    display: none;
}

.language-mode--review .translation-review {
    display: block;
}

.language-mode--review .single-language-input,
.language-mode--review .dual-language-input {
    display: none;
}

/* Primary Input Groups */
.primary-input-group {
    display: none;
}

.language-mode--single .primary-input-group.active {
    display: block;
}

/* Ensure primary inputs get proper required attributes updated dynamically */
.language-mode--single .primary-input-group:not(.active) input,
.language-mode--single .primary-input-group:not(.active) textarea {
    display: none;
}

/* ==========================================================================
   Field Input Styling
   ========================================================================== */

.field-row {
    display: flex;
    align-items: flex-start;
    gap: var(--space-3, 0.75rem);
    margin-bottom: var(--space-3, 0.75rem);
}

.field-input-wrapper {
    flex: 1;
    position: relative;
}

/* Language Badge */
.lang-badge {
    position: absolute;
    top: var(--space-2, 0.5rem);
    right: var(--space-2, 0.5rem);
    background: var(--color-primary, #652C8F);
    color: var(--color-white, #ffffff);
    font-size: 0.625rem;
    font-weight: 700;
    padding: 0.125rem 0.375rem;
    border-radius: 0.25rem;
    text-transform: uppercase;
    z-index: 10;
    pointer-events: none;
    letter-spacing: 0.5px;
}

[dir="rtl"] .lang-badge {
    right: auto;
    left: var(--space-2, 0.5rem);
}

/* Input Fields */
.bilingual-field__input {
    width: 100%;
    padding: var(--space-4, 1rem);
    border: 2px solid var(--color-sand, #EDE9E3);
    border-radius: var(--radius-input, 0.75rem);
    font-size: var(--text-base, 1rem);
    color: var(--color-text, #1a1a1a);
    background: var(--color-white, #ffffff);
    transition: all 0.2s ease;
    line-height: 1.5;
}

.bilingual-field__input:focus {
    outline: none;
    border-color: var(--color-primary, #652C8F);
    box-shadow: 0 0 0 4px rgba(101, 44, 143, 0.1);
}

.bilingual-field__input[dir="rtl"] {
    text-align: right;
    font-family: var(--font-arabic, 'Cairo', 'Arial', sans-serif);
}

/* Dual input padding for badges */
.dual-input {
    padding-right: 3rem;
}

.dual-input[dir="rtl"] {
    padding-right: var(--space-4, 1rem);
    padding-left: 3rem;
}

/* Textarea variant */
textarea.bilingual-field__input {
    min-height: 120px;
    resize: vertical;
    max-height: 400px;
}

/* ==========================================================================
   Field States
   ========================================================================== */

/* Loading State */
.bilingual-field__input.is-loading {
    background: linear-gradient(
        90deg,
        #ffffff 0%,
        #EDE9E3 50%,
        #ffffff 100%
    );
    background-size: 200% 100%;
    animation: loading-shimmer 1.5s ease-in-out infinite;
    cursor: wait;
    pointer-events: none;
}

@keyframes loading-shimmer {
    0% { background-position: -200% 0; }
    100% { background-position: 200% 0; }
}

/* Success State (brief) */
.bilingual-field__input.translation-success {
    border-color: var(--color-success, #5D8A66);
    animation: success-glow 0.6s ease-out;
}

@keyframes success-glow {
    0%, 100% {
        box-shadow: 0 0 0 0 rgba(93, 138, 102, 0);
    }
    50% {
        box-shadow: 0 0 0 6px rgba(93, 138, 102, 0.3);
    }
}

/* Error State */
.bilingual-field__input.translation-error {
    border-color: var(--color-error, #dc2626);
    animation: error-shake 0.4s ease-out;
}

@keyframes error-shake {
    0%, 100% { transform: translateX(0); }
    25% { transform: translateX(-4px); }
    50% { transform: translateX(4px); }
    75% { transform: translateX(-2px); }
}

/* Validation Error State - generic error class */
.bilingual-field__input.error,
.dual-input.error {
    border-color: var(--color-error, #dc2626) !important;
    background-color: rgba(220, 38, 38, 0.05);
    box-shadow: 0 0 0 3px rgba(220, 38, 38, 0.1);
}

.bilingual-field__input.error:focus,
.dual-input.error:focus {
    border-color: var(--color-error, #dc2626);
    box-shadow: 0 0 0 3px rgba(220, 38, 38, 0.2);
}

/* Auto-Translated State */
.bilingual-field__input.auto-translated {
    background-color: #FFFBEB;
    border-color: #FCD34D;
}

.bilingual-field__input.auto-translated:focus {
    background-color: var(--color-white, #ffffff);
    border-color: var(--color-primary, #652C8F);
}

/* Edited State */
.bilingual-field__input.auto-translated.edited {
    background-color: #EEF2FF;
    border-color: #C7D2FE;
}

/* ==========================================================================
   Translate Button Component
   ========================================================================== */

.btn-translate {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2, 0.5rem);
    padding: var(--space-2, 0.5rem) var(--space-4, 1rem);
    height: 40px;
    background: var(--color-pearl, #F8F5F2);
    border: 1px solid var(--color-sand, #EDE9E3);
    border-radius: var(--radius-button, 0.75rem);
    font-family: var(--font-body, system-ui, -apple-system, sans-serif);
    font-size: var(--text-sm, 0.875rem);
    font-weight: 500;
    color: var(--color-charcoal, #4A4543);
    cursor: pointer;
    white-space: nowrap;
    transition: all 0.2s ease;
    flex-shrink: 0;
}

.btn-translate:hover:not(:disabled) {
    background: var(--color-secondary, #E8A598);
    color: var(--color-white, #ffffff);
    border-color: var(--color-secondary, #E8A598);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(232, 165, 152, 0.25);
}

.btn-translate:focus {
    outline: 2px solid var(--color-primary, #652C8F);
    outline-offset: 2px;
}

/* Icon-only variant for advanced mode */
.btn-translate--icon-only {
    padding: var(--space-2, 0.5rem);
    min-width: 40px;
    width: 40px;
    opacity: 0.7;
}

.btn-translate--icon-only .btn-translate__text {
    display: none;
}

.btn-translate--icon-only:hover {
    opacity: 1;
}

/* Hide per-field translate buttons in single-language modes */
.language-mode--single .btn-translate--icon-only {
    display: none !important;
}

/* Show per-field translate buttons only in dual (advanced) mode */
.language-mode--dual .btn-translate--icon-only {
    display: inline-flex;
}

/* Button States */
.btn-translate.is-loading {
    background: #E8EAF6;
    color: #7986CB;
    border-color: #7986CB;
    cursor: not-allowed;
    opacity: 0.8;
    pointer-events: none;
}

.btn-translate.is-success {
    background: #E8F5E9;
    color: #5D8A66;
    border-color: #5D8A66;
    animation: success-pulse 0.5s ease-out;
}

@keyframes success-pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.05); }
}

.btn-translate.is-error {
    background: #FFEBEE;
    color: #E57373;
    border-color: #E57373;
}

.btn-translate:disabled {
    background: var(--color-sand, #EDE9E3);
    color: #C9C2B8;
    border-color: var(--color-sand, #EDE9E3);
    cursor: not-allowed;
    opacity: 0.6;
    pointer-events: none;
}

/* Button Icon */
.btn-translate__icon {
    width: 16px;
    height: 16px;
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
}

.btn-translate__icon svg {
    width: 100%;
    height: 100%;
}

/* Button Spinner */
.btn-translate__spinner {
    width: 14px;
    height: 14px;
    border: 2px solid currentColor;
    border-right-color: transparent;
    border-radius: 50%;
    animation: spin 0.6s linear infinite;
}

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

/* ==========================================================================
   Translate All Fields Button
   ========================================================================== */

.translate-all-section {
    margin: var(--space-6, 1.5rem) 0;
    padding: var(--space-6, 1.5rem);
    background: linear-gradient(135deg, rgba(101, 44, 143, 0.05) 0%, rgba(232, 165, 152, 0.05) 100%);
    border: 2px dashed var(--color-primary, #652C8F);
    border-radius: var(--radius-lg, 0.75rem);
    text-align: center;
}

/* Show translate-all button only in single-language modes */
.translate-all-section {
    display: block;
}

/* Hide translate-all button in dual (advanced) mode */
.language-mode--dual .translate-all-section {
    display: none;
}

/* Keep translate-all visible during review mode so users can re-translate if needed */
.language-mode--review .translate-all-section {
    display: block;
}

.btn-translate-all {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-3, 0.75rem);
    padding: var(--space-4, 1rem) var(--space-8, 2rem);
    background: linear-gradient(135deg, var(--color-primary, #652C8F) 0%, #7B3FA6 100%);
    color: var(--color-white, #ffffff);
    border: none;
    border-radius: var(--radius-button, 0.75rem);
    font-family: var(--font-body, system-ui, -apple-system, sans-serif);
    font-size: var(--text-lg, 1.125rem);
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 4px 12px rgba(101, 44, 143, 0.3);
}

.btn-translate-all:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(101, 44, 143, 0.4);
}

.btn-translate-all:active:not(:disabled) {
    transform: translateY(0);
    box-shadow: 0 2px 8px rgba(101, 44, 143, 0.3);
}

.btn-translate-all:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
}

.btn-translate-all__icon {
    width: 20px;
    height: 20px;
    flex-shrink: 0;
}

.btn-translate-all__text-primary {
    font-weight: 600;
}

.btn-translate-all__text-secondary {
    font-size: var(--text-sm, 0.875rem);
    opacity: 0.9;
    font-weight: 500;
}

.translate-all-section__help {
    margin-top: var(--space-3, 0.75rem);
    font-size: var(--text-sm, 0.875rem);
    color: var(--color-charcoal, #4A4543);
    line-height: 1.5;
}

/* Loading state for translate-all button */
.btn-translate-all.is-loading {
    pointer-events: none;
    opacity: 0.8;
}

.btn-translate-all.is-loading .btn-translate-all__icon {
    animation: spin 0.8s linear infinite;
}

/* Highlight required animation - shown when user tries to continue without translating */
.btn-translate-all.highlight-required {
    animation: pulse-highlight 0.5s ease-in-out 3;
    box-shadow: 0 0 0 4px rgba(239, 68, 68, 0.4), 0 4px 12px rgba(101, 44, 143, 0.3);
}

@keyframes pulse-highlight {
    0%, 100% {
        transform: scale(1);
        box-shadow: 0 0 0 4px rgba(239, 68, 68, 0.4), 0 4px 12px rgba(101, 44, 143, 0.3);
    }
    50% {
        transform: scale(1.02);
        box-shadow: 0 0 0 8px rgba(239, 68, 68, 0.2), 0 8px 20px rgba(101, 44, 143, 0.4);
    }
}

/* ==========================================================================
   Translation Review Mode
   ========================================================================== */

.review-columns {
    display: grid;
    gap: var(--space-4, 1rem);
    grid-template-columns: 1fr;
}

@media (min-width: 768px) {
    .review-columns {
        grid-template-columns: 1fr 1fr;
    }
}

.review-column {
    background: var(--color-white, #ffffff);
    border: 2px solid var(--color-sand, #EDE9E3);
    border-radius: var(--radius-md, 0.5rem);
    padding: var(--space-4, 1rem);
}

.review-column[data-lang="ar"] {
    border-color: rgba(101, 44, 143, 0.3);
}

.review-column[data-lang="en"] {
    border-color: rgba(232, 165, 152, 0.3);
}

.review-column__header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--space-3, 0.75rem);
    padding-bottom: var(--space-2, 0.5rem);
    border-bottom: 1px solid var(--color-sand, #EDE9E3);
}

.review-column__title {
    font-weight: 600;
    font-size: var(--text-sm, 0.875rem);
    color: var(--color-text, #1a1a1a);
}

.review-badge {
    display: inline-flex;
    align-items: center;
    padding: 0.25rem 0.5rem;
    border-radius: 9999px;
    font-size: var(--text-xs, 0.75rem);
    font-weight: 600;
}

.review-badge--original {
    background: rgba(101, 44, 143, 0.1);
    color: var(--color-primary, #652C8F);
}

.review-badge--translated {
    background: #FEF3C7;
    color: #92400E;
}

.review-field-wrapper {
    position: relative;
}

.review-input {
    width: 100%;
    margin-bottom: var(--space-2, 0.5rem);
}

.review-input[readonly] {
    background: var(--color-pearl, #F8F5F2);
    cursor: default;
}

.btn-edit-review {
    display: inline-flex;
    align-items: center;
    gap: 0.375rem;
    padding: var(--space-2, 0.5rem) var(--space-3, 0.75rem);
    background: var(--color-secondary, #E8A598);
    color: var(--color-white, #ffffff);
    border: none;
    border-radius: var(--radius-button, 0.75rem);
    font-size: var(--text-sm, 0.875rem);
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
}

.btn-edit-review:hover {
    background: #D99587;
    transform: translateY(-1px);
    box-shadow: 0 2px 8px rgba(232, 165, 152, 0.3);
}

.btn-edit-review svg {
    width: 14px;
    height: 14px;
}

/* ==========================================================================
   Translation Status Badge
   ========================================================================== */

.translation-status {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2, 0.5rem);
    margin-top: var(--space-2, 0.5rem);
    font-size: var(--text-xs, 0.75rem);
}

.auto-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    background: #FEF3C7;
    color: #92400E;
    border: 1px solid #FCD34D;
    padding: 0.125rem 0.5rem;
    border-radius: 9999px;
    font-size: var(--text-xs, 0.75rem);
    font-weight: 600;
    line-height: 1.4;
}

.auto-badge__icon {
    font-size: 0.875em;
    line-height: 1;
}

.auto-badge__text {
    line-height: 1;
}

/* Edited Badge */
.auto-badge.edited {
    background: #E0E7FF;
    color: #3730A3;
    border-color: #A5B4FC;
}

/* Low Confidence Warning */
.auto-badge.low-confidence {
    background: #FECACA;
    color: #991B1B;
    border-color: #FCA5A5;
}

/* ==========================================================================
   Responsive Design
   ========================================================================== */

@media (max-width: 640px) {
    /* Stack field rows */
    .field-row {
        flex-direction: column;
        gap: var(--space-2, 0.5rem);
    }

    /* Full-width input wrapper */
    .field-input-wrapper {
        width: 100%;
    }

    /* Translate button alignment */
    .btn-translate {
        align-self: flex-end;
        font-size: var(--text-xs, 0.75rem);
        height: 36px;
        padding: var(--space-2, 0.5rem) var(--space-3, 0.75rem);
    }

    /* Smaller language badge on mobile */
    .lang-badge {
        font-size: 10px;
        padding: 0.125rem 0.25rem;
    }

    /* Touch-friendly tap target */
    .btn-translate {
        min-height: 44px;
        min-width: 44px;
    }

    /* Active tap state */
    .btn-translate:active:not(:disabled) {
        transform: scale(0.98);
        transition: transform 0.1s;
    }

    /* Translate all button mobile */
    .btn-translate-all {
        width: 100%;
        flex-direction: column;
        gap: var(--space-2, 0.5rem);
        padding: var(--space-4, 1rem);
    }

    .translate-all-section {
        padding: var(--space-4, 1rem);
    }

    /* Language mode options stacked */
    .language-mode-options {
        grid-template-columns: 1fr;
    }
}

/* ==========================================================================
   RTL Support
   ========================================================================== */

[dir="rtl"] .bilingual-field {
    direction: rtl;
}

[dir="rtl"] .field-row {
    flex-direction: row-reverse;
}

[dir="rtl"] .btn-translate {
    flex-direction: row-reverse;
}

[dir="rtl"] .translation-status {
    flex-direction: row-reverse;
}

/* Force field direction regardless of container */
[dir="rtl"] input[dir="ltr"],
[dir="rtl"] textarea[dir="ltr"] {
    direction: ltr;
    text-align: left;
}

[dir="ltr"] input[dir="rtl"],
[dir="ltr"] textarea[dir="rtl"] {
    direction: rtl;
    text-align: right;
}

/* ==========================================================================
   Accessibility - Reduced Motion
   ========================================================================== */

@media (prefers-reduced-motion: reduce) {
    .btn-translate,
    .btn-translate-all,
    .bilingual-field__input,
    .auto-badge,
    .language-mode-option {
        animation: none !important;
        transition: none !important;
    }

    .btn-translate:active,
    .btn-translate-all:active {
        transform: none !important;
    }
}

/* ==========================================================================
   Screen Reader Only
   ========================================================================== */

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border-width: 0;
}