@import url('https://fonts.googleapis.com/css2?family=Montserrat:wght@300;400;500;600;700;800;900&display=swap');

:root {
    --bg-primary: #ffffff;
    --bg-card: #ffffff;
    --text-main: #120914;
    --text-muted: #524f53;
    --primary: #c740c7;
    --primary-light: #fdf2fd;
    --primary-hover: #a530a5;
    --success: #10b981;
    --success-bg: #ecfdf5;
    --warning: #ef4444;
    --warning-bg: #fef2f2;
    --border: #ebe7ec;
    --radius: 15px;
    --sidebar-width: 280px;
    --transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: 'Montserrat', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-main);
    line-height: 1.7;
    min-height: 100vh;
}

/* Home / Dashboard Layout */
.dashboard-container {
    max-width: 1000px;
    margin: 0 auto;
    padding: 4rem 2rem;
    animation: fadeIn 0.4s ease-out;
}

.dashboard-header {
    margin-bottom: 3rem;
    text-align: center;
}

.dashboard-header h1 {
    font-size: 2.75rem;
    font-weight: 800;
    color: #130C3E;
    letter-spacing: -0.04em;
    margin-bottom: 0.5rem;
}

.dashboard-header p {
    font-size: 1.2rem;
    color: var(--text-muted);
}

.courses-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 2rem;
}

.course-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 2rem;
    cursor: pointer;
    text-decoration: none;
    color: inherit;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.02);
    transition: var(--transition);
    display: flex;
    flex-direction: column;
}

.course-card:hover {
    transform: translateY(-4px);
    border-color: var(--primary);
    box-shadow: 0 10px 20px -3px rgba(199, 64, 199, 0.1);
}

.course-icon {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.course-card h2 {
    font-size: 1.35rem;
    font-weight: 700;
    color: #0f172a;
    margin-bottom: 0.75rem;
}

.course-card p {
    font-size: 0.95rem;
    color: var(--text-muted);
    flex-grow: 1;
    line-height: 1.5;
}

.course-card-footer {
    margin-top: 1.5rem;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--primary);
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

/* Course Viewer Shell Layout */
.course-viewer-layout {
    display: flex;
    min-height: 100vh;
}

aside {
    width: var(--sidebar-width);
    background-color: #130C3E;
    border-right: 1px solid #1c154f;
    position: fixed;
    top: 0;
    bottom: 0;
    left: 0;
    overflow-y: auto;
    padding: 1.5rem 1rem;
    display: flex;
    flex-direction: column;
    z-index: 10;
}

.aside-header {
    margin-bottom: 1.5rem;
}

.back-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    color: #cbd5e1;
    text-decoration: none;
    font-size: 0.85rem;
    font-weight: 600;
    padding: 0.4rem 0.75rem;
    border-radius: 6px;
    background: #1e1654;
    border: 1px solid #281e6e;
    margin-bottom: 1rem;
    transition: var(--transition);
}

.back-btn:hover {
    background: #2d227a;
    color: #ffffff;
}

.brand {
    padding: 0.25rem 0.75rem;
}

.brand h2 {
    font-size: 1.15rem;
    font-weight: 800;
    color: #ffffff;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.brand p {
    font-size: 0.8rem;
    color: #94a3b8;
    margin-top: 0.1rem;
}

.lang-dropdown-container {
    position: fixed;
    top: 1.5rem;
    right: 2.5rem;
    z-index: 100;
}

.lang-dropdown {
    appearance: none;
    -webkit-appearance: none;
    background-color: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 0.5rem 2.2rem 0.5rem 1rem;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-main);
    cursor: pointer;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05);
    transition: var(--transition);
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 24 24' stroke='%23475569'%3E%3Cpath stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='M19 9l-7 7-7-7'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 0.75rem center;
    background-size: 1rem;
}

.lang-dropdown:hover {
    border-color: #cbd5e1;
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.05);
    transform: translateY(-1px);
}

.lang-dropdown:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px var(--primary-light);
}

@media(max-width: 1024px) {
    .lang-dropdown-container {
        position: absolute;
        top: 1rem;
        right: 1rem;
    }
}

.nav-group {
    margin-bottom: 1.5rem;
}

.nav-group-title {
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    color: #94a3b8;
    letter-spacing: 0.05em;
    padding: 0 0.75rem;
    margin-bottom: 0.5rem;
}

.nav-list {
    list-style: none;
}

.nav-item button {
    width: 100%;
    text-align: left;
    background: none;
    border: none;
    padding: 0.55rem 0.75rem;
    font-size: 0.85rem;
    color: #cbd5e1;
    cursor: pointer;
    border-radius: 6px;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.nav-item button:hover {
    background-color: #1e1654;
    color: #ffffff;
}

.nav-item button.active {
    background-color: var(--primary);
    color: #ffffff;
    font-weight: 600;
}

/* Main Content Workspace */
main {
    margin-left: var(--sidebar-width);
    flex: 1;
    padding: 3rem 4rem;
    max-width: 1000px;
}

.lesson-content {
    background-color: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 3rem;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.02);
    animation: fadeIn 0.4s ease-out;
}

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

/* Typography & Components */
.meta-tag {
    display: inline-block;
    background-color: var(--primary-light);
    color: var(--primary);
    font-size: 0.75rem;
    font-weight: 700;
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    margin-bottom: 1rem;
    text-transform: uppercase;
}

h1 {
    font-size: 2.25rem;
    font-weight: 800;
    letter-spacing: -0.03em;
    margin-bottom: 1.5rem;
    color: #130C3E;
}

p {
    font-size: 1.05rem;
    color: var(--text-main);
    margin-bottom: 1.5rem;
}

h3 {
    font-size: 1.25rem;
    margin: 2rem 0 1rem 0;
    color: #130C3E;
}

/* Framework Diagrams */
.diagram-box {
    background-color: #f8fafc;
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 1.5rem;
    margin: 1.5rem 0;
    font-family: monospace;
    font-size: 0.9rem;
    line-height: 1.4;
    color: #334155;
    overflow-x: auto;
    white-space: pre;
}

/* Action/Scripting lists */
.framework-steps {
    list-style: none;
    margin: 1.5rem 0;
    counter-reset: step-counter;
}

.framework-steps li {
    position: relative;
    padding-left: 3rem;
    margin-bottom: 1.5rem;
}

.framework-steps li::before {
    content: counter(step-counter);
    counter-increment: step-counter;
    position: absolute;
    left: 0;
    top: 0;
    width: 2rem;
    height: 2rem;
    background-color: var(--primary-light);
    color: var(--primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
}

.example-card {
    background-color: #fdfdfd;
    border-left: 4px solid var(--primary);
    padding: 1.25rem;
    margin-top: 0.75rem;
    border-radius: 0 8px 8px 0;
    font-style: italic;
    box-shadow: inset 0 1px 3px rgba(0,0,0,0.01);
}

/* Grid Framework layouts */
.concept-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 1.2rem;
    margin: 1.5rem 0;
}

.concept-card {
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 1.25rem;
    background-color: #fff;
}

.concept-card strong {
    display: block;
    color: var(--primary);
    margin-bottom: 0.5rem;
    font-size: 1.05rem;
}

/* Interactive Quiz Blocks */
.quiz-panel {
    margin-top: 3rem;
    border-top: 2px solid var(--border);
    padding-top: 2rem;
}

.quiz-title {
    font-size: 1.15rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: #0f172a;
}

.options-stack {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    margin-bottom: 1.5rem;
}

.option-item {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
    padding: 1rem;
    border: 1px solid var(--border);
    border-radius: 8px;
    cursor: pointer;
    transition: var(--transition);
}

.option-item:hover {
    background-color: var(--bg-primary);
    border-color: #cbd5e1;
}

.option-item input {
    margin-top: 0.25rem;
}

.btn-submit {
    background-color: var(--primary);
    color: white;
    border: none;
    padding: 0.75rem 1.75rem;
    font-size: 0.95rem;
    font-weight: 600;
    border-radius: 6px;
    cursor: pointer;
    transition: var(--transition);
}

.btn-submit:hover {
    background-color: var(--primary-hover);
}

.alert-box {
    margin-top: 1.5rem;
    padding: 1.25rem;
    border-radius: 8px;
    display: none;
    font-weight: 500;
    font-size: 0.95rem;
}

.alert-box.pass {
    display: block;
    background-color: var(--success-bg);
    color: var(--success);
    border: 1px solid #bbf7d0;
}

.alert-box.fail {
    display: block;
    background-color: var(--warning-bg);
    color: var(--warning);
    border: 1px solid #fecaca;
}

/* Image CMS Component */
.cms-image-container {
    margin: 2rem 0;
    text-align: center;
}

.cms-image {
    max-width: 500px;
    width: 100%;
    height: auto;
    border-radius: 8px;
    border: 1px solid var(--border);
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.05);
}

.cms-caption {
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-top: 0.5rem;
    font-style: italic;
}

/* Video CMS Component */
.cms-video-container {
    margin: 2rem 0;
    border-radius: 8px;
    overflow: hidden;
    border: 1px solid var(--border);
    background: #000;
    position: relative;
    padding-bottom: 56.25%; /* 16:9 Aspect Ratio */
    height: 0;
}

.cms-video-container iframe,
.cms-video-container video {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border: 0;
}

/* Accordion CMS Component */
.cms-accordion {
    border: 1px solid var(--border);
    border-radius: 8px;
    margin: 1.5rem 0;
    overflow: hidden;
}

.cms-accordion-item {
    border-bottom: 1px solid var(--border);
}

.cms-accordion-item:last-child {
    border-bottom: none;
}

.cms-accordion-header {
    background: #f8fafc;
    padding: 1rem 1.25rem;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    user-select: none;
    transition: var(--transition);
}

.cms-accordion-header:hover {
    background: #f1f5f9;
}

.cms-accordion-header::after {
    content: '▼';
    font-size: 0.75rem;
    transition: transform 0.25s ease;
}

.cms-accordion-item.active .cms-accordion-header::after {
    transform: rotate(-180deg);
}

.cms-accordion-content {
    padding: 0;
    max-height: 0;
    overflow: hidden;
    background: white;
    transition: all 0.25s ease-out;
}

.cms-accordion-item.active .cms-accordion-content {
    padding: 1.25rem;
    max-height: 1000px;
    border-top: 1px solid var(--border);
}

/* Responsive Fixes */
@media(max-width: 1024px) {
    .course-viewer-layout {
        flex-direction: column;
    }
    aside {
        width: 100%;
        position: relative;
        height: auto;
        border-right: none;
        border-bottom: 1px solid var(--border);
    }
    main {
        margin-left: 0;
        padding: 2rem 1.5rem;
    }
}

/* Lesson Metadata (Objectives/Outcomes) Styling */
.lesson-meta-box {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
    background: #f8fafc;
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 1.25rem;
    margin: 1.5rem 0 2rem 0;
}

.lesson-meta-section h4 {
    margin-top: 0;
    margin-bottom: 0.5rem;
    font-size: 0.85rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: #475569;
}

.lesson-meta-section ul {
    list-style: none;
    padding-left: 0;
    margin: 0;
}

.lesson-meta-section li {
    font-size: 0.9rem;
    color: #334155;
    margin-bottom: 0.25rem;
    position: relative;
    padding-left: 1.25rem;
}

.lesson-meta-section li::before {
    position: absolute;
    left: 0;
    font-size: 0.75rem;
}

.lesson-meta-section.obj li::before {
    content: "🎯";
}

.lesson-meta-section.out li::before {
    content: "🏆";
}

@media(max-width: 640px) {
    .lesson-meta-box {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
}

/* Quote CMS Component */
.cms-quote {
    margin: 2rem 0;
    padding: 1.5rem 2rem;
    border-left: 4px solid var(--primary);
    background: var(--primary-light);
    border-radius: 0 var(--radius) var(--radius) 0;
}

.cms-quote .quote-text {
    font-size: 1.05rem;
    font-style: italic;
    color: var(--text-main);
    line-height: 1.6;
    margin: 0 0 0.5rem 0;
}

.cms-quote .quote-author {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-muted);
    display: block;
    font-style: normal;
}