:root {
    --slms-primary: #0073aa;
    --slms-primary-dark: #005177;
    --slms-success: #46b450;
    --slms-success-dark: #3e9f45;
    --slms-text: #2c3338;
    --slms-text-light: #646970;
    --slms-bg: #f0f2f5;
    --slms-white: #ffffff;
    --slms-border: #dcdcde;
    --slms-radius: 12px;
    --slms-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --slms-shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
}

/* LMS Content Module */
.slms-lesson-content {
    background: var(--slms-white);
    padding: 2rem;
    border-radius: var(--slms-radius);
    box-shadow: var(--slms-shadow);
    margin-bottom: 2rem;
}

.slms-lesson-header {
    border-bottom: 1px solid var(--slms-border);
    margin-bottom: 2rem;
    padding-bottom: 1rem;
}

.slms-lesson-title {
    margin: 0;
    font-size: 2.25rem;
    color: var(--slms-text);
    font-weight: 700;
    line-height: 1.2;
}

.slms-lesson-video-container {
    margin-bottom: 2rem;
    border-radius: var(--slms-radius);
    overflow: hidden;
    box-shadow: var(--slms-shadow-lg);
}

.slms-lesson-body {
    font-size: 1.125rem;
    line-height: 1.7;
    color: var(--slms-text);
}

.slms-lesson-quiz-container {
    margin-top: 3rem;
    padding-top: 2rem;
    border-top: 2px dashed var(--slms-border);
}

/* Course Outline Module */
.slms-course-outline {
    background: var(--slms-white);
    padding: 1.5rem;
    border-radius: var(--slms-radius);
    box-shadow: var(--slms-shadow);
    border: 1px solid var(--slms-border);
}

.slms-outline-header {
    margin-bottom: 1.5rem;
}

.slms-outline-title {
    margin: 0 0 1rem 0;
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--slms-text);
}

/* Progress Bar */
.slms-progress-bar-container {
    background: var(--slms-bg);
    height: 10px;
    border-radius: 5px;
    position: relative;
    margin-bottom: 0.5rem;
}

.slms-progress-bar-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--slms-primary), #3498db);
    border-radius: 5px;
    transition: width 0.4s ease;
}

.slms-progress-label {
    font-size: 0.75rem;
    color: var(--slms-text-light);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.slms-lesson-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.slms-lesson-item {
    margin-bottom: 0.25rem;
}

.slms-lesson-item a {
    text-decoration: none;
    display: flex;
    align-items: center;
    padding: 0.75rem 1rem;
    border-radius: 8px;
    color: var(--slms-text);
    transition: all 0.2s ease;
}

.slms-lesson-item a:hover {
    background: var(--slms-bg);
    color: var(--slms-primary);
}

.slms-lesson-item.is-current a {
    background: rgba(0, 115, 170, 0.08);
    color: var(--slms-primary);
    font-weight: 600;
}

.slms-lesson-number {
    font-size: 0.875rem;
    color: var(--slms-text-light);
    width: 24px;
    margin-right: 0.5rem;
}

.slms-status-icon {
    margin-right: 12px;
    display: flex;
    align-items: center;
}

.is-completed .slms-status-icon {
    color: var(--slms-success);
}

/* Complete Button */
.slms-complete-button-container {
    margin-top: 2rem;
    display: flex;
    justify-content: center;
}

.slms-complete-toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.75rem 2rem !important;
    font-size: 1.125rem !important;
    font-weight: 600 !important;
    border-radius: 50px !important;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1) !important;
    cursor: pointer;
    box-shadow: 0 4px 14px 0 rgba(0, 118, 255, 0.39);
}

.slms-complete-toggle:not(.is-completed) {
    background-color: var(--slms-primary) !important;
    color: white !important;
    border: none !important;
}

.slms-complete-toggle:not(.is-completed):hover {
    background-color: var(--slms-primary-dark) !important;
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 118, 255, 0.23);
}

.slms-complete-toggle.is-completed {
    background-color: var(--slms-success) !important;
    color: white !important;
    border: none !important;
}

.slms-complete-toggle.is-completed:hover {
    background-color: var(--slms-success-dark) !important;
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(70, 180, 80, 0.23);
}

.slms-complete-toggle .slms-label-complete {
    display: none;
}

.slms-complete-toggle.is-completed .slms-label-incomplete {
    display: none;
}

.slms-complete-toggle.is-completed .slms-label-complete {
    display: inline-flex;
    align-items: center;
}

.slms-complete-toggle.is-completed .slms-label-complete::before {
    content: "\f147";
    font-family: dashicons;
    margin-right: 8px;
    font-size: 1.25rem;
}

/* Placeholder Styles */
.slms-content-placeholder,
.slms-outline-placeholder,
.slms-complete-placeholder {
    padding: 2rem;
    background: #f8f9fa;
    border: 2px dashed #dee2e6;
    border-radius: 12px;
    text-align: center;
    color: #6c757d;
    font-style: italic;
}