/**
 * LMS UI and Alert Styling
 */
:root {
    --lms-focus-bg: #fffbe5;
    --lms-focus-border: #ffb900;
    --lms-focus-text: #856404;
    --lms-focus-shadow: 0 0 10px rgba(255, 185, 0, 0.3);
}

.lms-spinner {
    border: 4px solid rgba(0, 0, 0, 0.1);
    width: 36px;
    height: 36px;
    border-radius: 50%;
    border-left-color: #09f;
    animation: lms-spin 1s linear infinite;
    margin: 20px auto;
}

@keyframes lms-spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.lms-advice-block {
    background: #f0f6fb;
    border-left: 4px solid #007cba;
    padding: 15px;
    margin: 20px 0;
}

.lms-injected-review {
    background: #fffbe5;
    border: 1px solid #ffb900;
    padding: 20px;
    margin-bottom: 30px;
}

.lms-injected-review h2 {
    margin-top: 0;
    color: #856404;
}

.lms-orphan-alert {
    border-left-color: #d63638 !important;
}

/* Module Accordion */
.lms-module-header {
    transition: background 0.3s ease;
}

.lms-module-header:hover {
    background: #f1f1f1 !important;
}

.lms-module.is-expanded .lms-module-toggle {
    transform: rotate(180deg);
}

.lms-module-toggle {
    display: inline-block;
    transition: transform 0.3s ease;
}

/* Status Icons */
.lms-curriculum-item.is-completed a {
    color: #46b450;
    text-decoration: line-through;
}

.lms-curriculum-item.lms-item-active-focus {
    background: var(--lms-focus-bg) !important;
    border: 2px solid var(--lms-focus-border) !important;
    box-shadow: var(--lms-focus-shadow);
    padding: 12px !important;
    margin: 5px 0;
    border-radius: 6px;
    position: relative;
}

.lms-curriculum-item.lms-item-active-focus::after {
    content: "▶ NEXT";
    position: absolute;
    right: 15px;
    top: 50%;
    transform: translateY(-50%);
    background: var(--lms-focus-border);
    color: #000;
    font-size: 10px;
    font-weight: bold;
    padding: 2px 6px;
    border-radius: 3px;
    letter-spacing: 0.5px;
}

.lms-status-icon {
    font-size: 1.2em;
}

/* Button Loading State */
#lms-complete-next.is-loading {
    opacity: 0.6;
    cursor: wait;
}

/* Advanced Quiz Exercises */
.lms-question h3 {
    margin-bottom: 20px;
    padding-bottom: 10px;
    border-bottom: 2px solid #f0f0f1;
}

.lms-matching-exercise {
    display: flex;
    gap: 20px;
    margin: 25px 0;
    padding: 20px;
    background: #fdfdfd;
    border: 2px solid #e2e4e7;
    border-radius: 8px;
}

.lms-matching-left, .lms-matching-right {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.lms-match-static {
    background: #f8f9fa;
    border: 1px solid #d1d5d7;
    border-radius: 4px;
    padding: 12px 15px;
    font-weight: 600;
    color: #2c3338;
    min-height: 50px;
}

.lms-match-draggable {
    background: #ffffff;
    border: 1px solid #007cba;
    border-left: 5px solid #007cba;
    border-radius: 4px;
    padding: 12px 15px;
    cursor: move;
    min-height: 50px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.05);
}

.lms-match-draggable:hover {
    background: #f0f6fb;
}

.lms-ordering-exercise {
    list-style: none;
    padding: 20px;
    margin: 25px 0;
    background: #fdfdfd;
    border: 2px solid #e2e4e7;
    border-radius: 8px;
    min-height: 100px;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.lms-ordering-item {
    padding: 12px 15px;
    border: 1px solid #007cba;
    border-left: 5px solid #007cba;
    border-radius: 4px;
    background: #fff;
    cursor: move;
    display: flex;
    align-items: center;
    box-shadow: 0 2px 4px rgba(0,0,0,0.05);
}

.lms-categorization-exercise {
    margin: 25px 0;
    padding: 20px;
    background: #fdfdfd;
    border: 2px solid #e2e4e7;
    border-radius: 8px;
}

.lms-categorization-source {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    padding: 20px;
    border: 2px dashed #007cba;
    background: #f0f6fb;
    min-height: 100px;
    margin-bottom: 25px;
    border-radius: 6px;
}

.lms-categorization-buckets {
    display: flex;
    gap: 20px;
}

.lms-category-bucket {
    flex: 1;
    background: #ffffff;
    border: 2px solid #d1d5d7;
    padding: 0;
    border-radius: 6px;
    overflow: hidden;
}

.lms-category-bucket h4 {
    margin: 0;
    background: #f8f9fa;
    border-bottom: 1px solid #d1d5d7;
    padding: 12px;
    font-size: 15px;
    text-align: center;
    color: #1d2327;
}

.lms-category-bucket-items {
    min-height: 120px;
    padding: 15px;
    background: #fff;
}

.lms-category-item {
    padding: 10px 15px;
    border: 1px solid #ccd0d4;
    background: #fff;
    cursor: move;
    border-radius: 4px;
    margin-bottom: 8px;
    box-shadow: 0 1px 3px rgba(0,0,0,0.05);
}

.lms-multi-dropdown-exercise {
    margin-bottom: 20px;
}

.lms-categorization-source {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    padding: 15px;
    border: 2px dashed #007cba;
    background: #f0f6fb;
    min-height: 80px;
    margin-bottom: 20px;
    border-radius: 5px;
}

.lms-categorization-source::before {
    content: "Source Items (Drag from here)";
    display: block;
    width: 100%;
    font-size: 11px;
    color: #007cba;
    text-transform: uppercase;
    margin-bottom: 10px;
}

.lms-category-item {
    padding: 8px 12px;
    border: 1px solid #ccd0d4;
    background: #fff;
    cursor: move;
    border-radius: 3px;
    box-shadow: 0 1px 2px rgba(0,0,0,0.05);
}

.lms-categorization-buckets {
    display: flex;
    gap: 15px;
}

.lms-category-bucket {
    flex: 1;
    background: #f9f9f9;
    border: 2px solid #ddd;
    padding: 15px;
    border-radius: 5px;
    transition: border-color 0.2s;
}

.lms-category-bucket h4 {
    margin-top: 0;
    border-bottom: 1px solid #eee;
    padding-bottom: 10px;
    margin-bottom: 10px;
    font-size: 14px;
    text-align: center;
    color: #555;
}

.lms-category-bucket-items {
    min-height: 100px;
    background: #fff;
    border: 1px inset #eee;
    padding: 5px;
}

.lms-multi-dropdown-select {
    padding: 2px;
    margin: 0 5px;
    font-size: inherit;
    border: 1px solid #ddd;
    border-radius: 3px;
}

.ui-sortable-placeholder {
    border: 1px dashed #007cba !important;
    visibility: visible !important;
    background: #f0f6fb !important;
}

/* Mobile Interaction Hardening */
.lms-draggable-item {
    touch-action: none;
    user-select: none;
    -webkit-user-select: none;
}

.lms-draggable-item.is-active-drag {
    z-index: 9999;
    box-shadow: 0 10px 20px rgba(0,0,0,0.15);
    transform: scale(1.05);
    opacity: 0.9;
    transition: transform 0.1s ease, box-shadow 0.1s ease;
}

/* Results Summary (Phase 10) */
.lms-results-summary {
    padding: 20px;
    background: #fff;
    border-radius: 8px;
}

.lms-results-header {
    text-align: center;
    margin-bottom: 30px;
    padding: 20px;
    border-radius: 8px;
}

.lms-results-header.is-mastered {
    background: #ecfdf5;
    border: 1px solid #10b981;
    color: #065f46;
}

.lms-results-header.is-retry {
    background: #fef2f2;
    border: 1px solid #ef4444;
    color: #991b1b;
}

.lms-results-score {
    font-size: 48px;
    font-weight: 800;
    display: block;
}

.lms-feedback-list {
    margin-top: 30px;
}

.lms-feedback-item {
    margin-bottom: 20px;
    padding: 15px;
    border-radius: 6px;
    border-left: 4px solid #ddd;
    background: #f9fafb;
}

.lms-feedback-item.is-correct {
    border-left-color: #10b981;
}

.lms-feedback-item.is-partial {
    border-left-color: #f59e0b;
}

.lms-feedback-item.is-incorrect {
    border-left-color: #ef4444;
}

.lms-feedback-indicator {
    float: right;
    font-size: 20px;
}

.lms-feedback-comparison {
    margin-top: 15px;
    padding: 10px;
    background: #fff;
    border: 1px solid #e5e7eb;
    border-radius: 4px;
    font-size: 14px;
}

.lms-feedback-label {
    font-weight: 600;
    color: #6b7280;
    display: block;
    margin-bottom: 5px;
}

.lms-results-footer {
    margin-top: 40px;
    display: flex;
    justify-content: center;
    gap: 15px;
}

/* Breadcrumbs */
.lms-breadcrumbs {
    margin-bottom: 20px;
    font-size: 14px;
    color: #6b7280;
}

.lms-breadcrumbs a {
    color: #3b82f6;
    text-decoration: none;
}

.lms-breadcrumbs a:hover {
    text-decoration: underline;
}

.lms-breadcrumbs .sep {
    margin: 0 8px;
    color: #9ca3af;
}

.lms-breadcrumbs .current-item {
    font-weight: 500;
    color: #374151;
}