/* ============================================================
   SKILL SPARK NEXUS - Main Stylesheet
   Design System: Clean white/light with indigo/teal accents
   Fonts: Space Grotesk (headings), DM Sans (body)
   Prefix: ssn- (all classes)
   ============================================================ */

/* --- 1. CSS Custom Properties --- */
:root {
    --ssn-bg-primary: #ffffff;
    --ssn-bg-secondary: #ffffff;
    --ssn-bg-card: #f8fafc;
    --ssn-bg-card-hover: #f1f5f9;
    --ssn-bg-elevated: #f1f5f9;
    --ssn-bg-input: #f8fafc;
    --ssn-border: #e2e8f0;
    --ssn-border-light: #f1f5f9;
    --ssn-text-primary: #1e293b;
    --ssn-text-secondary: #475569;
    --ssn-text-muted: #94a3b8;
    --ssn-cyan: #0891b2;
    --ssn-cyan-light: #06b6d4;
    --ssn-cyan-dark: #0e7490;
    --ssn-violet: #7c3aed;
    --ssn-violet-light: #8b5cf6;
    --ssn-violet-dark: #6d28d9;
    --ssn-rose: #e11d48;
    --ssn-emerald: #059669;
    --ssn-amber: #d97706;
    --ssn-gradient-main: linear-gradient(135deg, #4f46e5 0%, #0891b2 100%);
    --ssn-gradient-hover: linear-gradient(135deg, #6366f1 0%, #06b6d4 100%);
    --ssn-gradient-subtle: linear-gradient(135deg, rgba(79,70,229,0.06) 0%, rgba(8,145,178,0.06) 100%);
    --ssn-shadow-sm: 0 1px 3px rgba(0,0,0,0.04), 0 1px 2px rgba(0,0,0,0.03);
    --ssn-shadow-md: 0 4px 12px rgba(0,0,0,0.05);
    --ssn-shadow-lg: 0 12px 40px rgba(0,0,0,0.05);
    --ssn-shadow-float: 0 8px 32px rgba(0,0,0,0.05);
    --ssn-shadow-glow-cyan: 0 4px 14px rgba(8,145,178,0.2);
    --ssn-shadow-glow-violet: 0 4px 14px rgba(124,58,237,0.2);
    --ssn-radius-sm: 0.5rem;
    --ssn-radius-md: 0.75rem;
    --ssn-radius-lg: 1rem;
    --ssn-radius-xl: 1.5rem;
    --ssn-font-heading: 'Space Grotesk', sans-serif;
    --ssn-font-body: 'DM Sans', sans-serif;
    --ssn-transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* --- 2. Base / Reset --- */
.ssn-app {
    font-family: var(--ssn-font-body);
    color: var(--ssn-text-primary);
    background-color: var(--ssn-bg-primary);
    line-height: 1.6;
    max-width: 72rem;
    margin: 0 auto;
    padding: 0;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    border-radius: var(--ssn-radius-xl);
}

.ssn-app *,
.ssn-app *::before,
.ssn-app *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

.ssn-app button {
    font-family: var(--ssn-font-body);
    cursor: pointer;
    border: none;
    background: none;
    color: inherit;
}

.ssn-app input {
    font-family: var(--ssn-font-body);
    color: var(--ssn-text-primary);
    border: none;
    outline: none;
    background: none;
}

.ssn-hidden {
    display: none !important;
}

/* --- 3. Hero Section --- */
.ssn-hero {
    position: relative;
    padding: 1.5rem 2rem 1.5rem;
    text-align: center;
    overflow: hidden;
    border-radius: var(--ssn-radius-xl);
}

.ssn-hero-bg {
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse at 30% 20%, rgba(79,70,229,0.06) 0%, transparent 60%),
                radial-gradient(ellipse at 70% 80%, rgba(8,145,178,0.05) 0%, transparent 60%),
                #ffffff;
    z-index: 0;
}

.ssn-hero-content {
    position: relative;
    z-index: 1;
    max-width: 44rem;
    margin: 0 auto;
}

.ssn-hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: var(--ssn-gradient-subtle);
    border: 1px solid var(--ssn-border);
    color: var(--ssn-cyan-light);
    font-size: 0.8rem;
    font-weight: 600;
    padding: 0.4rem 1rem;
    border-radius: 999px;
    margin-bottom: 1.5rem;
    letter-spacing: 0.03em;
}

.ssn-hero-badge i {
    font-size: 0.75rem;
    color: #4f46e5;
}

.ssn-hero-title {
    font-family: var(--ssn-font-heading);
    font-size: clamp(2rem, 5vw, 3.25rem);
    font-weight: 700;
    line-height: 1.15;
    color: var(--ssn-text-primary);
    margin-bottom: 1rem;
}

.ssn-gradient-text {
    background: var(--ssn-gradient-main);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.ssn-hero-subtitle {
    font-size: 1.05rem;
    color: var(--ssn-text-secondary);
    max-width: 36rem;
    margin: 0 auto 2rem;
    line-height: 1.7;
}

/* --- 4. Search Bar --- */
.ssn-search-wrapper {
    max-width: 38rem;
    margin: 0 auto 0.75rem;
}

.ssn-search-bar {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    background: #ffffff;
    border: 1px solid var(--ssn-border);
    border-radius: var(--ssn-radius-lg);
    padding: 0.35rem 0.35rem 0.35rem 1.25rem;
    box-shadow: var(--ssn-shadow-float);
    transition: border-color var(--ssn-transition), box-shadow var(--ssn-transition);
}

.ssn-search-bar:focus-within {
    border-color: var(--ssn-cyan);
    box-shadow: var(--ssn-shadow-float), 0 0 0 3px rgba(8,145,178,0.08);
}

.ssn-search-icon {
    color: var(--ssn-text-muted);
    font-size: 1rem;
    flex-shrink: 0;
}

.ssn-search-input {
    flex: 1;
    padding: 0.75rem 0.5rem;
    font-size: 1rem;
    background: transparent;
    color: var(--ssn-text-primary);
    min-width: 0;
}

.ssn-search-input::placeholder {
    color: var(--ssn-text-muted);
}

.ssn-clear-btn {
    width: 2rem;
    height: 2rem;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    color: var(--ssn-text-muted);
    transition: background var(--ssn-transition), color var(--ssn-transition);
    flex-shrink: 0;
}

.ssn-clear-btn:hover {
    background: var(--ssn-bg-elevated);
    color: var(--ssn-text-primary);
}

.ssn-generate-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: var(--ssn-gradient-main);
    color: #fff;
    font-weight: 600;
    font-size: 0.9rem;
    padding: 0.7rem 1.5rem;
    border-radius: var(--ssn-radius-md);
    transition: transform var(--ssn-transition), box-shadow var(--ssn-transition), opacity var(--ssn-transition);
    white-space: nowrap;
    flex-shrink: 0;
}

.ssn-generate-btn:hover {
    transform: translateY(-1px);
    box-shadow: var(--ssn-shadow-glow-cyan);
}

.ssn-generate-btn:active {
    transform: translateY(0) scale(0.97);
}

.ssn-generate-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none;
}

/* --- 5. Quick Tags --- */
.ssn-quick-tags {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.ssn-quick-tag-label {
    font-size: 0.8rem;
    color: var(--ssn-text-muted);
    font-weight: 500;
}

.ssn-quick-tag {
    font-size: 0.78rem;
    font-weight: 500;
    padding: 0.35rem 0.85rem;
    border-radius: 999px;
    border: 1px solid var(--ssn-border);
    color: var(--ssn-text-secondary);
    background: transparent;
    transition: all var(--ssn-transition);
}

.ssn-quick-tag:hover {
    border-color: var(--ssn-cyan);
    color: var(--ssn-cyan-light);
    background: rgba(6,182,212,0.08);
    transform: translateY(-1px);
}

.ssn-quick-tag:active {
    transform: scale(0.96);
}

/* --- 6. Loading Overlay --- */
.ssn-loading-overlay {
    position: fixed;
    inset: 0;
    z-index: 9999;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255,255,255,0.92);
    backdrop-filter: blur(12px);
    animation: ssnFadeIn 0.3s ease;
}

.ssn-loading-card {
    background: var(--ssn-bg-card);
    border: 1px solid var(--ssn-border);
    border-radius: var(--ssn-radius-xl);
    padding: 2.5rem 2rem;
    text-align: center;
    max-width: 26rem;
    width: 90%;
    box-shadow: var(--ssn-shadow-lg);
}

.ssn-loading-icon {
    margin-bottom: 1.5rem;
}

.ssn-spinner {
    width: 48px;
    height: 48px;
    border: 3px solid #e2e8f0;
    border-top-color: #4f46e5;
    border-right-color: #0891b2;
    border-radius: 50%;
    animation: ssnSpin 0.8s linear infinite;
    margin: 0 auto;
}

.ssn-spinner-sm {
    width: 24px;
    height: 24px;
    border: 2px solid #e2e8f0;
    border-top-color: #4f46e5;
    border-radius: 50%;
    animation: ssnSpin 0.7s linear infinite;
    margin: 0 auto;
}

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

.ssn-loading-title {
    font-family: var(--ssn-font-heading);
    font-size: 1.4rem;
    font-weight: 700;
    margin-bottom: 0.35rem;
}

.ssn-loading-topic {
    color: var(--ssn-cyan-light);
    font-size: 0.95rem;
    font-weight: 500;
    margin-bottom: 1.5rem;
}

.ssn-loading-progress {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 1.5rem;
}

.ssn-loading-progress-bar {
    flex: 1;
    height: 6px;
    background: var(--ssn-bg-elevated);
    border-radius: 999px;
    overflow: hidden;
}

.ssn-loading-progress-fill {
    height: 100%;
    width: 0%;
    background: var(--ssn-gradient-main);
    border-radius: 999px;
    transition: width 0.4s ease;
}

.ssn-loading-percent {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--ssn-cyan-light);
    min-width: 3rem;
    text-align: right;
}

.ssn-loading-steps {
    display: flex;
    flex-direction: column;
    gap: 0.6rem;
    margin-bottom: 1.25rem;
    text-align: left;
}

.ssn-loading-step {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    font-size: 0.85rem;
    color: var(--ssn-text-muted);
    transition: color var(--ssn-transition);
}

.ssn-loading-step i {
    width: 1.2rem;
    text-align: center;
    font-size: 0.8rem;
}

.ssn-loading-step.ssn-step-done {
    color: var(--ssn-emerald);
}

.ssn-loading-step.ssn-step-done i::before {
    content: "\f00c";
    font-family: "Font Awesome 6 Free";
    font-weight: 900;
}

.ssn-loading-step.ssn-step-done i {
    animation: none;
}

.ssn-loading-step.ssn-step-active {
    color: var(--ssn-cyan-light);
}

.ssn-loading-message {
    font-size: 0.85rem;
    color: var(--ssn-text-muted);
    font-style: italic;
}

/* --- 7. Error Display --- */
.ssn-error {
    text-align: center;
    padding: 2rem;
    margin: 1.5rem 2rem;
    background: rgba(244,63,94,0.08);
    border: 1px solid rgba(244,63,94,0.25);
    border-radius: var(--ssn-radius-lg);
}

.ssn-error i {
    font-size: 2rem;
    color: var(--ssn-rose);
    margin-bottom: 0.75rem;
}

.ssn-error p {
    color: var(--ssn-text-secondary);
    margin-bottom: 1rem;
}

.ssn-error-retry {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.5rem 1.25rem;
    background: var(--ssn-rose);
    color: #fff;
    font-weight: 600;
    font-size: 0.85rem;
    border-radius: var(--ssn-radius-sm);
    transition: opacity var(--ssn-transition);
}

.ssn-error-retry:hover {
    opacity: 0.85;
}

/* --- 8. Course Result Section --- */
.ssn-course-result {
    padding: 2rem;
    animation: ssnSlideUp 0.5s ease;
}

.ssn-result-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 1rem;
    margin-bottom: 2rem;
}

.ssn-result-title {
    font-family: var(--ssn-font-heading);
    font-size: clamp(1.5rem, 3vw, 2rem);
    font-weight: 700;
    background: var(--ssn-gradient-main);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.ssn-result-actions {
    display: flex;
    gap: 0.5rem;
}

/* --- 9. Module List (Course Modules) --- */
.ssn-module-list {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 1.25rem;
}

.ssn-module-card {
    background: #ffffff;
    border: 1px solid #e2e8f0;
    border-radius: 1rem;
    padding: 1.5rem 1.5rem 1.25rem;
    transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
    cursor: pointer;
}

.ssn-module-card::after {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: 1rem;
    background: linear-gradient(135deg, rgba(79,70,229,0.02) 0%, rgba(8,145,178,0.02) 100%);
    opacity: 0;
    transition: opacity 0.3s ease;
    pointer-events: none;
}

.ssn-module-card:hover {
    border-color: #c7d2fe;
    transform: translateY(-5px);
    box-shadow: 0 12px 28px -6px rgba(79,70,229,0.12), 0 4px 12px -4px rgba(0,0,0,0.06);
}

.ssn-module-card:hover::after {
    opacity: 1;
}

.ssn-module-card:hover .ssn-module-number {
    background: var(--ssn-gradient-main);
    color: #fff;
    border-color: transparent;
    transform: scale(1.1);
}

.ssn-module-card:hover .ssn-btn-open-lesson {
    background: var(--ssn-gradient-main);
    color: #fff;
    border-color: transparent;
    box-shadow: 0 4px 12px rgba(79,70,229,0.25);
}

.ssn-module-number {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 2.25rem;
    height: 2.25rem;
    border-radius: 50%;
    background: #f0f0ff;
    color: #4f46e5;
    font-family: var(--ssn-font-heading);
    font-weight: 700;
    font-size: 0.85rem;
    border: 2px solid #e0e7ff;
    transition: all 0.3s ease;
}

.ssn-module-title {
    font-family: var(--ssn-font-heading);
    font-size: 1.05rem;
    font-weight: 600;
    color: var(--ssn-text-primary);
    margin-bottom: 0.4rem;
    line-height: 1.35;
}

.ssn-module-desc {
    font-size: 0.85rem;
    color: var(--ssn-text-secondary);
    line-height: 1.6;
    margin-bottom: 0.5rem;
}

.ssn-module-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 0.75rem;
}

.ssn-module-duration {
    font-size: 0.75rem;
    color: var(--ssn-text-muted);
    font-weight: 500;
    display: inline-flex;
    align-items: center;
    gap: 0.3rem;
    background: var(--ssn-bg-elevated);
    padding: 0.2rem 0.6rem;
    border-radius: 999px;
}

.ssn-module-gain {
    margin-top: 0.5rem;
    margin-bottom: 0.75rem;
    padding: 0.6rem 0.75rem;
    background: linear-gradient(135deg, rgba(79,70,229,0.04) 0%, rgba(5,150,105,0.04) 100%);
    border-left: 3px solid var(--ssn-emerald);
    border-radius: 0 var(--ssn-radius-sm) var(--ssn-radius-sm) 0;
    font-size: 0.82rem;
    color: var(--ssn-text-secondary);
    line-height: 1.5;
}

.ssn-module-gain i {
    color: var(--ssn-emerald);
    margin-right: 0.3rem;
    font-size: 0.75rem;
}

.ssn-module-actions {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

/* --- 10. Buttons --- */
.ssn-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    font-weight: 600;
    font-size: 0.82rem;
    padding: 0.5rem 1rem;
    border-radius: var(--ssn-radius-sm);
    transition: all var(--ssn-transition);
    white-space: nowrap;
}

.ssn-btn-primary {
    background: var(--ssn-gradient-main);
    color: #fff;
}

.ssn-btn-primary:hover {
    box-shadow: var(--ssn-shadow-glow-cyan);
    transform: translateY(-1px);
}

.ssn-btn-secondary {
    background: var(--ssn-bg-elevated);
    color: var(--ssn-text-primary);
    border: 1px solid var(--ssn-border);
}

.ssn-btn-secondary:hover {
    background: var(--ssn-bg-card-hover);
    border-color: var(--ssn-cyan);
}

.ssn-btn-accent {
    background: linear-gradient(135deg, var(--ssn-violet) 0%, var(--ssn-rose) 100%);
    color: #fff;
}

.ssn-btn-accent:hover {
    box-shadow: var(--ssn-shadow-glow-violet);
    transform: translateY(-1px);
}

.ssn-btn-ghost {
    color: var(--ssn-text-secondary);
    border: 1px solid var(--ssn-border);
    background: transparent;
}

.ssn-btn-ghost:hover {
    border-color: var(--ssn-violet);
    color: var(--ssn-violet-light);
    background: rgba(139,92,246,0.06);
}

.ssn-btn-outline {
    color: var(--ssn-text-secondary);
    border: 1px solid var(--ssn-border);
    background: transparent;
}

.ssn-btn-outline:hover {
    border-color: var(--ssn-cyan);
    color: var(--ssn-cyan-light);
}

.ssn-btn-block {
    width: 100%;
    justify-content: center;
}

.ssn-btn-sm {
    font-size: 0.75rem;
    padding: 0.35rem 0.75rem;
}

.ssn-btn-open-lesson {
    background: #ffffff;
    color: #4f46e5;
    border: 1.5px solid #e0e7ff;
    font-weight: 600;
    transition: all 0.3s ease;
}

.ssn-btn-open-lesson:hover {
    background: var(--ssn-gradient-main);
    color: #fff;
    border-color: transparent;
    box-shadow: 0 4px 12px rgba(79,70,229,0.25);
    transform: translateY(-1px);
}

/* --- 11. Categories Section --- */
.ssn-categories {
    padding: 1rem 2rem 3rem;
}

.ssn-section-header {
    text-align: center;
    margin-bottom: 0.5rem;
}

.ssn-section-title {
    font-family: var(--ssn-font-heading);
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--ssn-text-primary);
    margin-bottom: 0.5rem;
}

.ssn-section-title i {
    margin-right: 0.5rem;
    background: var(--ssn-gradient-main);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.ssn-section-desc {
    font-size: 0.95rem;
    color: var(--ssn-text-muted);
}

/* --- Mode Switcher --- */
.ssn-mode-switcher {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0;
    background: var(--ssn-bg-card);
    border: 1px solid var(--ssn-border);
    border-radius: 999px;
    padding: 0.3rem;
    margin: 0 auto 1.25rem;
    max-width: 480px;
    position: relative;
}

.ssn-mode-btn {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.7rem 1.2rem;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--ssn-text-muted);
    background: transparent;
    border: none;
    border-radius: 999px;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    z-index: 2;
}

.ssn-mode-btn i {
    font-size: 0.9rem;
}

.ssn-mode-btn-active {
    color: #fff;
    text-shadow: 0 1px 2px rgba(0,0,0,0.2);
}

.ssn-mode-indicator {
    position: absolute;
    top: 0.3rem;
    left: 0.3rem;
    width: calc(50% - 0.3rem);
    height: calc(100% - 0.6rem);
    background: var(--ssn-gradient-main);
    border-radius: 999px;
    transition: transform 0.35s cubic-bezier(0.4, 0, 0.2, 1), opacity 0.25s ease;
    z-index: 1;
    box-shadow: 0 2px 12px rgba(6,182,212,0.3);
    opacity: 0;
}

.ssn-mode-btn[data-mode="pathways"].ssn-mode-btn-active ~ .ssn-mode-indicator {
    opacity: 1;
    transform: translateX(0);
}

.ssn-mode-btn[data-mode="lessons"].ssn-mode-btn-active ~ .ssn-mode-indicator {
    opacity: 1;
    transform: translateX(100%);
}

/* --- Mode Panels --- */
.ssn-mode-panel {
    display: none;
    animation: ssnFadeSlideUp 0.4s ease;
}

.ssn-mode-panel-active {
    display: block;
}

@keyframes ssnFadeSlideUp {
    from { opacity: 0; transform: translateY(12px); }
    to { opacity: 1; transform: translateY(0); }
}

.ssn-mode-hint {
    text-align: center;
    font-size: 0.82rem;
    color: var(--ssn-text-muted);
    margin-bottom: 1.25rem;
}

.ssn-mode-hint i {
    color: #f97316;
    margin-right: 0.35rem;
}

/* --- Pathway Grid (Popular Pathways mode) --- */
.ssn-pathway-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 1rem;
}

.ssn-discover .ssn-pathway-card {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1.1rem 1.25rem;
    background: var(--ssn-bg-card);
    border: 1px solid var(--ssn-border);
    border-radius: var(--ssn-radius-lg);
    cursor: pointer;
    transition: all var(--ssn-transition);
    text-align: left;
    width: 100%;
}

.ssn-discover .ssn-pathway-card:hover {
    border-color: var(--ssn-cyan);
    transform: translateY(-3px);
    box-shadow: 0 8px 24px rgba(6,182,212,0.12);
}

.ssn-discover .ssn-pathway-icon {
    width: 2.8rem;
    height: 2.8rem;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--ssn-radius-md);
    font-size: 1.2rem;
    color: var(--ssn-cyan);
    background: rgba(6,182,212,0.1);
    flex-shrink: 0;
    transition: all var(--ssn-transition);
}

.ssn-discover .ssn-pathway-card:hover .ssn-pathway-icon {
    background: var(--ssn-cyan);
    color: #fff;
    transform: scale(1.08);
}

.ssn-discover .ssn-pathway-info {
    flex: 1;
    min-width: 0;
}

.ssn-discover .ssn-pathway-info h4 {
    font-family: var(--ssn-font-heading);
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--ssn-text-primary);
    margin: 0 0 0.2rem;
}

.ssn-discover .ssn-pathway-info span {
    font-size: 0.78rem;
    color: var(--ssn-text-muted);
}

.ssn-discover .ssn-pathway-arrow {
    color: var(--ssn-text-muted);
    font-size: 0.8rem;
    transition: all var(--ssn-transition);
    opacity: 0;
    transform: translateX(-4px);
}

.ssn-discover .ssn-pathway-card:hover .ssn-pathway-arrow {
    opacity: 1;
    transform: translateX(0);
    color: var(--ssn-cyan);
}

/* --- Browse Tabs (Individual Lessons mode) --- */
.ssn-browse-tabs {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
    justify-content: center;
}

.ssn-browse-tab {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.55rem 1rem;
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--ssn-text-muted);
    background: var(--ssn-bg-card);
    border: 1px solid var(--ssn-border);
    border-radius: 999px;
    cursor: pointer;
    transition: all var(--ssn-transition);
}

.ssn-browse-tab:hover {
    border-color: var(--tab-accent, var(--ssn-cyan));
    color: var(--tab-accent, var(--ssn-cyan));
    background: rgba(6,182,212,0.05);
}

.ssn-browse-tab-active {
    background: var(--tab-accent, var(--ssn-cyan)) !important;
    border-color: var(--tab-accent, var(--ssn-cyan)) !important;
    color: #fff !important;
    box-shadow: 0 2px 10px rgba(6,182,212,0.25);
}

/* --- Browse Lessons Grid --- */
.ssn-browse-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
    gap: 0.75rem;
    animation: ssnFadeSlideUp 0.3s ease;
}

.ssn-browse-lesson-card {
    display: flex;
    align-items: center;
    gap: 0.7rem;
    padding: 0.85rem 1rem;
    background: var(--ssn-bg-card);
    border: 1px solid var(--ssn-border);
    border-radius: var(--ssn-radius-md);
    cursor: pointer;
    transition: all var(--ssn-transition);
    text-align: left;
    width: 100%;
}

.ssn-browse-lesson-card i {
    color: var(--ssn-cyan);
    font-size: 1rem;
    flex-shrink: 0;
    opacity: 0.6;
    transition: all var(--ssn-transition);
}

.ssn-browse-lesson-card span {
    font-size: 0.82rem;
    font-weight: 500;
    color: var(--ssn-text-primary);
    line-height: 1.3;
}

.ssn-browse-lesson-card:hover {
    border-color: var(--ssn-cyan);
    transform: translateX(4px);
    box-shadow: 0 4px 16px rgba(6,182,212,0.1);
}

.ssn-browse-lesson-card:hover i {
    opacity: 1;
    transform: scale(1.15);
}

/* --- 12. Modals --- */
.ssn-modal {
    position: fixed;
    inset: 0;
    z-index: 10000;
    display: flex;
    align-items: flex-start;
    justify-content: center;
    padding: 2rem 1rem;
    overflow-y: auto;
    transition: opacity 0.3s ease;
}

.ssn-modal-hidden {
    opacity: 0;
    pointer-events: none;
}

.ssn-modal-hidden .ssn-modal-container {
    transform: translateY(24px) scale(0.97);
}

.ssn-modal-backdrop {
    position: fixed;
    inset: 0;
    background: rgba(15,23,42,0.5);
    backdrop-filter: blur(6px);
}

.ssn-modal-container {
    position: relative;
    background: var(--ssn-bg-secondary);
    border: 1px solid var(--ssn-border);
    border-radius: var(--ssn-radius-xl);
    width: 100%;
    max-width: 52rem;
    padding: 0;
    box-shadow: var(--ssn-shadow-lg);
    transition: transform 0.35s cubic-bezier(0.23,1,0.32,1), opacity 0.3s ease;
    margin: 2rem 0;
}

.ssn-modal-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    padding: 1.5rem 2rem 1rem;
    border-bottom: 1px solid var(--ssn-border-light);
    position: sticky;
    top: 0;
    background: var(--ssn-bg-secondary);
    border-radius: var(--ssn-radius-xl) var(--ssn-radius-xl) 0 0;
    z-index: 2;
}

.ssn-modal-header-text {
    flex: 1;
    min-width: 0;
}

.ssn-modal-title {
    font-family: var(--ssn-font-heading);
    font-size: 1.35rem;
    font-weight: 700;
    color: var(--ssn-text-primary);
    line-height: 1.3;
    margin-bottom: 0.25rem;
}

.ssn-modal-subtitle {
    font-size: 0.9rem;
    color: var(--ssn-text-muted);
}

.ssn-subtitle-link {
    color: var(--ssn-cyan);
    text-decoration: none;
    font-weight: 600;
    transition: all var(--ssn-transition);
    border-bottom: 1px dashed rgba(6,182,212,0.4);
}

.ssn-subtitle-link:hover {
    color: var(--ssn-cyan-light);
    border-bottom-color: var(--ssn-cyan-light);
    text-shadow: 0 0 8px rgba(6,182,212,0.3);
}

.ssn-subtitle-row {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.ssn-subtitle-row .ssn-modal-subtitle {
    flex: 1;
    min-width: 0;
}

.ssn-header-audio-btn {
    width: 2rem;
    height: 2rem;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    border: 1px solid rgba(6,182,212,0.3);
    background: rgba(6,182,212,0.08);
    color: var(--ssn-cyan-light);
    font-size: 0.7rem;
    cursor: pointer;
    transition: all 0.2s ease;
    flex-shrink: 0;
}

.ssn-header-audio-btn:hover {
    background: rgba(6,182,212,0.18);
    border-color: rgba(6,182,212,0.5);
    transform: scale(1.05);
}

.ssn-header-audio-btn.ssn-audio-active {
    background: rgba(6,182,212,0.2);
    border-color: var(--ssn-cyan);
    color: var(--ssn-cyan);
    animation: ssnPulseAudio 1.5s ease-in-out infinite;
}

@keyframes ssnPulseAudio {
    0%, 100% { box-shadow: 0 0 0 0 rgba(6,182,212,0.3); }
    50% { box-shadow: 0 0 0 4px rgba(6,182,212,0); }
}

.ssn-modal-close {
    width: 2.25rem;
    height: 2.25rem;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--ssn-radius-sm);
    color: var(--ssn-text-muted);
    transition: all var(--ssn-transition);
    flex-shrink: 0;
    margin-left: 1rem;
}

.ssn-modal-close:hover {
    background: var(--ssn-bg-elevated);
    color: var(--ssn-rose);
}

.ssn-modal-loader {
    padding: 3rem 2rem;
    text-align: center;
}

.ssn-modal-loader p {
    margin-top: 1rem;
    color: var(--ssn-text-muted);
    font-size: 0.9rem;
}

.ssn-modal-error {
    padding: 2rem;
    text-align: center;
    color: var(--ssn-rose);
}

.ssn-modal-error i {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
}

.ssn-modal-footer {
    padding: 1rem 2rem 1.5rem;
    border-top: 1px solid var(--ssn-border-light);
}

.ssn-mini-loader {
    padding: 1rem;
    text-align: center;
}

/* --- 13. Lesson Content Styling --- */
.ssn-lesson-content {
    padding: 1.5rem 2rem;
    overflow: hidden;
    min-width: 0;
}

.ssn-lesson-segment {
    margin-bottom: 1.5rem;
    background: var(--ssn-bg-card);
    border: 1px solid var(--ssn-border-light);
    border-radius: var(--ssn-radius-md);
    padding: 1.25rem;
    animation: ssnFadeInSegment 0.4s ease forwards;
    opacity: 0;
    transition: border-color var(--ssn-transition);
    overflow: hidden;
    min-width: 0;
}

.ssn-lesson-segment:hover {
    border-color: rgba(6,182,212,0.3);
}

.ssn-segment-title {
    font-family: var(--ssn-font-heading);
    font-size: 1.05rem;
    font-weight: 600;
    color: var(--ssn-cyan-light);
    display: flex;
    align-items: center;
    gap: 0.6rem;
    margin-bottom: 0.75rem;
    padding-bottom: 0.6rem;
    border-bottom: 1px solid var(--ssn-border-light);
}

.ssn-segment-title i {
    font-size: 1rem;
    color: var(--ssn-violet-light);
    transition: transform 0.2s ease;
}

.ssn-lesson-segment:hover .ssn-segment-title i {
    transform: scale(1.15) rotate(-3deg);
}

.ssn-segment-content {
    overflow: hidden;
    min-width: 0;
    max-width: 100%;
}

.ssn-segment-content p {
    font-size: 0.92rem;
    line-height: 1.75;
    color: var(--ssn-text-secondary);
    margin-bottom: 0.75rem;
    padding: 0.15rem 0.25rem;
    border-radius: 0.2rem;
    transition: background var(--ssn-transition);
    cursor: default;
}

.ssn-segment-content p:hover {
    background: rgba(79,70,229,0.03);
}

.ssn-segment-content ul {
    list-style: none;
    padding-left: 0;
    margin: 0.5rem 0;
}

.ssn-segment-content ul li {
    font-size: 0.92rem;
    line-height: 1.7;
    color: var(--ssn-text-secondary);
    padding: 0.3rem 0 0.3rem 1.5rem;
    position: relative;
    margin-bottom: 0.3rem;
}

.ssn-segment-content ul li::before {
    content: "";
    position: absolute;
    left: 0.25rem;
    top: 0.7em;
    width: 7px;
    height: 7px;
    border-radius: 2px;
    transform: rotate(45deg);
    background: var(--ssn-gradient-main);
    box-shadow: 0 0 4px rgba(79,70,229,0.25);
}

.ssn-segment-content strong {
    font-weight: 600;
    color: var(--ssn-text-primary);
}

/* Prerequisite internal links */
.ssn-segment-content .ssn-prereq-link {
    display: inline-flex;
    align-items: center;
    gap: 0.25rem;
    color: #4f46e5;
    font-weight: 600;
    font-size: 0.88rem;
    text-decoration: none;
    background: rgba(79,70,229,0.06);
    padding: 0.2rem 0.6rem;
    border-radius: 6px;
    border: 1px solid rgba(79,70,229,0.15);
    transition: all 0.2s ease;
    cursor: pointer;
}
.ssn-segment-content .ssn-prereq-link:hover {
    background: rgba(79,70,229,0.12);
    border-color: rgba(79,70,229,0.35);
    color: #3730a3;
    transform: translateY(-1px);
    box-shadow: 0 2px 8px rgba(79,70,229,0.15);
}
.ssn-segment-content .ssn-prereq-link::after {
    content: "→";
    font-size: 0.7rem;
    opacity: 0;
    transition: opacity 0.2s ease, transform 0.2s ease;
    transform: translateX(-2px);
}
.ssn-segment-content .ssn-prereq-link:hover::after {
    opacity: 1;
    transform: translateX(0);
}

/* Inline code */
.ssn-segment-content code {
    font-family: 'SF Mono', 'Fira Code', 'Consolas', monospace;
    font-size: 0.82rem;
    background: #f1f5f9;
    color: #4f46e5;
    padding: 0.15rem 0.4rem;
    border-radius: 4px;
    border: 1px solid #e2e8f0;
}

/* Ordered lists */
.ssn-segment-content ol {
    padding-left: 1.5rem;
    margin: 0.75rem 0;
    counter-reset: ssn-ol;
}

.ssn-segment-content ol li {
    font-size: 0.92rem;
    line-height: 1.7;
    color: var(--ssn-text-secondary);
    padding: 0.3rem 0 0.3rem 0.25rem;
    margin-bottom: 0.3rem;
    list-style: none;
    counter-increment: ssn-ol;
    position: relative;
}

.ssn-segment-content ol li::before {
    content: counter(ssn-ol);
    position: absolute;
    left: -1.5rem;
    top: 0.35rem;
    width: 1.25rem;
    height: 1.25rem;
    background: var(--ssn-gradient-main);
    color: #fff;
    font-size: 0.7rem;
    font-weight: 700;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Blockquotes */
.ssn-blockquote {
    margin: 0.75rem 0;
    padding: 0.85rem 1rem 0.85rem 1.25rem;
    border-radius: var(--ssn-radius-sm);
    font-size: 0.92rem;
    line-height: 1.65;
    border-left: 4px solid;
}

.ssn-bq-info {
    background: linear-gradient(135deg, rgba(79,70,229,0.04) 0%, rgba(8,145,178,0.04) 100%);
    border-left-color: #4f46e5;
    color: #334155;
}

.ssn-bq-warning {
    background: linear-gradient(135deg, rgba(245,158,11,0.06) 0%, rgba(239,68,68,0.04) 100%);
    border-left-color: #f59e0b;
    color: #92400e;
}

/* Code blocks */
.ssn-code-block {
    margin: 0.75rem 0;
    border-radius: var(--ssn-radius-md);
    overflow: hidden;
    border: 1px solid #e2e8f0;
    max-width: 100%;
}

.ssn-code-block pre {
    margin: 0;
    padding: 1rem 1.25rem;
    background: #1e293b;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    max-width: 100%;
}

.ssn-code-block code {
    font-family: 'SF Mono', 'Fira Code', 'Consolas', monospace;
    font-size: 0.82rem;
    line-height: 1.65;
    color: #e2e8f0;
    background: none;
    border: none;
    padding: 0;
    white-space: pre-wrap;
    word-break: break-word;
}

/* Dividers */
.ssn-divider {
    border: none;
    height: 1px;
    background: linear-gradient(to right, transparent, #e2e8f0, transparent);
    margin: 0.5rem 0;
}

/* --- Segment Variants --- */

/* Goal / Hook segment */
.ssn-seg-goal {
    background: linear-gradient(135deg, rgba(79,70,229,0.03) 0%, rgba(8,145,178,0.03) 100%);
    border-left: 4px solid #4f46e5;
    border-color: #e0e7ff;
}

.ssn-seg-goal .ssn-segment-title {
    color: #4f46e5;
}

/* Stats segment */
.ssn-seg-stats {
    background: #fefce8;
    border-color: #fef08a;
}

.ssn-seg-stats .ssn-segment-title {
    color: #a16207;
}

.ssn-seg-stats .ssn-segment-title i {
    color: #d97706;
}

/* Concept segment */
.ssn-seg-concept .ssn-segment-title {
    color: #0891b2;
}

.ssn-seg-concept .ssn-segment-title i {
    color: #06b6d4;
}

/* Action / Checklist segment */
.ssn-seg-action {
    background: linear-gradient(135deg, rgba(5,150,105,0.03) 0%, rgba(16,185,129,0.03) 100%);
    border-color: #d1fae5;
}

.ssn-seg-action .ssn-segment-title {
    color: #059669;
}

.ssn-seg-action .ssn-segment-title i {
    color: #10b981;
}

.ssn-seg-action ul li::before {
    background: linear-gradient(135deg, #059669 0%, #10b981 100%);
    box-shadow: 0 0 4px rgba(5,150,105,0.3);
}

/* Pitfall / Warning segment */
.ssn-seg-pitfall {
    background: linear-gradient(135deg, rgba(245,158,11,0.04) 0%, rgba(239,68,68,0.03) 100%);
    border-color: #fde68a;
}

.ssn-seg-pitfall .ssn-segment-title {
    color: #b45309;
}

.ssn-seg-pitfall .ssn-segment-title i {
    color: #f59e0b;
}

/* Quiz segment */
.ssn-seg-quiz {
    background: linear-gradient(135deg, rgba(139,92,246,0.03) 0%, rgba(124,58,237,0.03) 100%);
    border-color: #ede9fe;
}

.ssn-seg-quiz .ssn-segment-title {
    color: #7c3aed;
}

.ssn-seg-quiz .ssn-segment-title i {
    color: #8b5cf6;
}

/* Quiz question text */
.ssn-quiz-question-text {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--ssn-text-primary);
    margin-bottom: 0.5rem;
    padding: 0.5rem 0.75rem;
    background: rgba(139,92,246,0.04);
    border-radius: var(--ssn-radius-sm);
}

/* Quiz options */
.ssn-quiz-option {
    padding: 0.5rem 0.75rem 0.5rem 1.5rem !important;
    margin-bottom: 0.35rem !important;
    border-radius: var(--ssn-radius-sm);
    border: 1px solid #ede9fe;
    background: #fff;
    transition: all 0.2s ease;
    cursor: pointer;
}

.ssn-quiz-option::before {
    background: #8b5cf6 !important;
    box-shadow: none !important;
    width: 6px !important;
    height: 6px !important;
}

.ssn-quiz-option:hover {
    background: #f5f3ff;
    border-color: #c4b5fd;
}

/* Quiz answer reveal */
.ssn-quiz-answer {
    margin-top: 0.75rem;
    padding: 0.7rem 1rem;
    background: linear-gradient(135deg, rgba(5,150,105,0.06) 0%, rgba(16,185,129,0.06) 100%);
    border: 1px solid #a7f3d0;
    border-radius: var(--ssn-radius-sm);
    font-size: 0.88rem;
    color: #065f46;
}

/* Success blockquote (✅ fix) */
.ssn-bq-success {
    background: linear-gradient(135deg, rgba(5,150,105,0.05) 0%, rgba(16,185,129,0.05) 100%);
    border-left-color: #059669;
    color: #065f46;
}

/* Meta Engine Key-Value Pairs */
.ssn-meta-kv {
    font-family: 'SF Mono', 'Fira Code', 'Consolas', monospace;
    font-size: 0.82rem;
    line-height: 1.6;
    padding: 0.4rem 0.75rem;
    margin-bottom: 0.2rem;
    background: #f8fafc;
    border-left: 3px solid #e0e7ff;
    color: #475569;
    border-radius: 0 4px 4px 0;
}

.ssn-meta-kv strong {
    color: #4f46e5;
}

.ssn-meta-kv code {
    background: #eef2ff;
    color: #4338ca;
    padding: 0.1rem 0.35rem;
    border-radius: 3px;
    font-size: 0.8rem;
    border: 1px solid #e0e7ff;
}

/* Markdown Tables */
.ssn-table-wrap {
    margin: 0.75rem 0;
    overflow-x: auto;
    border-radius: var(--ssn-radius-md);
    border: 1px solid #e2e8f0;
}

.ssn-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.85rem;
    line-height: 1.55;
}

.ssn-table thead {
    background: linear-gradient(135deg, #f8fafc 0%, #f1f5f9 100%);
}

.ssn-table th {
    text-align: left;
    padding: 0.65rem 0.85rem;
    font-weight: 600;
    color: #1e293b;
    border-bottom: 2px solid #e2e8f0;
    font-size: 0.82rem;
    white-space: nowrap;
}

.ssn-table td {
    padding: 0.6rem 0.85rem;
    color: #475569;
    border-bottom: 1px solid #f1f5f9;
}

.ssn-table tbody tr:last-child td {
    border-bottom: none;
}

.ssn-table tbody tr:hover {
    background: rgba(79,70,229,0.02);
}

.ssn-table td strong {
    color: #1e293b;
}

/* Task Checkbox Checklist */
.ssn-checklist {
    list-style: none !important;
    padding-left: 0 !important;
    margin: 0.75rem 0;
}

.ssn-check-item {
    font-size: 0.9rem;
    line-height: 1.6;
    color: var(--ssn-text-secondary);
    padding: 0.55rem 0.75rem 0.55rem 2.25rem !important;
    margin-bottom: 0.4rem;
    position: relative;
    background: #ffffff;
    border: 1px solid #e2e8f0;
    border-radius: var(--ssn-radius-sm);
    transition: all 0.2s ease;
}

.ssn-check-item::before {
    content: "" !important;
    position: absolute !important;
    left: 0.7rem !important;
    top: 0.6rem !important;
    width: 1rem !important;
    height: 1rem !important;
    border: 2px solid #c7d2fe !important;
    border-radius: 4px !important;
    background: #fff !important;
    transform: none !important;
    box-shadow: none !important;
}

.ssn-check-item:hover {
    border-color: #c7d2fe;
    background: #fafafe;
}

.ssn-check-done::before {
    background: var(--ssn-gradient-main) !important;
    border-color: #4f46e5 !important;
}

.ssn-check-done::after {
    content: "✓";
    position: absolute;
    left: 0.82rem;
    top: 0.5rem;
    font-size: 0.7rem;
    color: #fff;
    font-weight: 700;
}

.ssn-check-item strong {
    color: #4f46e5;
}

/* Meta segment variant */
.ssn-seg-meta {
    background: #fafafe;
    border-color: #e0e7ff;
}

.ssn-seg-meta .ssn-segment-title {
    color: #6366f1;
}

.ssn-seg-meta .ssn-segment-title i {
    color: #818cf8;
}

/* --- 14. Audio Player --- */
.ssn-audio-player {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem 2rem;
    background: var(--ssn-bg-card);
    border-bottom: 1px solid var(--ssn-border-light);
}

.ssn-audio-toggle {
    width: 2.5rem;
    height: 2.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    background: var(--ssn-gradient-main);
    color: #fff;
    font-size: 0.85rem;
    flex-shrink: 0;
    transition: all var(--ssn-transition);
}

.ssn-audio-toggle:hover {
    box-shadow: var(--ssn-shadow-glow-cyan);
    transform: scale(1.05);
}

.ssn-audio-toggle.ssn-playing {
    background: var(--ssn-emerald);
}

.ssn-audio-progress {
    flex: 1;
}

.ssn-audio-progress-bar {
    height: 4px;
    background: var(--ssn-bg-elevated);
    border-radius: 999px;
    overflow: hidden;
    cursor: pointer;
}

.ssn-audio-progress-fill {
    height: 100%;
    width: 0%;
    background: var(--ssn-gradient-main);
    border-radius: 999px;
    transition: width 0.2s ease;
}

.ssn-audio-time {
    font-size: 0.78rem;
    color: var(--ssn-text-muted);
    font-weight: 500;
    min-width: 3.5rem;
    text-align: right;
    font-variant-numeric: tabular-nums;
}

/* Speech highlighting */
.ssn-currently-speaking {
    background: rgba(79,70,229,0.08) !important;
    box-shadow: 0 0 0 2px rgba(79,70,229,0.15);
    border-radius: 0.25rem;
}

/* --- 15. Lesson Actions --- */
.ssn-lesson-actions {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
    padding: 0 2rem 1rem;
}

/* --- 16. Translation Panel --- */
.ssn-translate-panel {
    margin: 0 2rem 1rem;
    padding: 0.75rem 1rem;
    background: var(--ssn-bg-card);
    border: 1px solid rgba(6,182,212,0.2);
    border-radius: var(--ssn-radius-md);
}

.ssn-translate-header {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    flex-wrap: wrap;
}

.ssn-translate-header label {
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--ssn-text-secondary);
    white-space: nowrap;
}

.ssn-translate-header label i {
    color: var(--ssn-cyan-light);
    margin-right: 0.3rem;
}

.ssn-lang-select {
    flex: 1;
    min-width: 120px;
    max-width: 180px;
    padding: 0.4rem 0.6rem;
    font-size: 0.82rem;
    border-radius: var(--ssn-radius-sm);
    border: 1px solid var(--ssn-border);
    background: var(--ssn-bg-secondary);
    color: var(--ssn-text-primary);
    cursor: pointer;
    transition: border-color 0.2s ease;
}

.ssn-lang-select:focus {
    outline: none;
    border-color: var(--ssn-cyan);
}

.ssn-lang-select option {
    background: var(--ssn-bg-secondary);
    color: var(--ssn-text-primary);
}

/* --- 17. Quiz Container --- */
.ssn-quiz-container {
    margin: 0 2rem 1rem;
    padding: 1rem 1.25rem;
    background: var(--ssn-bg-card);
    border: 1px solid rgba(139,92,246,0.2);
    border-radius: var(--ssn-radius-md);
}

.ssn-quiz-question {
    margin-bottom: 1.25rem;
}

.ssn-quiz-question p {
    font-weight: 600;
    color: var(--ssn-violet-light);
    margin-bottom: 0.5rem;
    font-size: 0.92rem;
}

.ssn-quiz-options label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.6rem 0.75rem;
    margin-bottom: 0.35rem;
    border-radius: var(--ssn-radius-sm);
    border: 1px solid var(--ssn-border);
    background: var(--ssn-bg-secondary);
    cursor: pointer;
    font-size: 0.88rem;
    color: var(--ssn-text-secondary);
    transition: all var(--ssn-transition);
}

.ssn-quiz-options label:hover {
    border-color: var(--ssn-violet);
    background: rgba(139,92,246,0.06);
}

.ssn-quiz-options input[type="radio"] {
    accent-color: var(--ssn-violet);
}

.ssn-quiz-submit {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.6rem 1.5rem;
    background: var(--ssn-emerald);
    color: #fff;
    font-weight: 600;
    font-size: 0.88rem;
    border-radius: var(--ssn-radius-sm);
    margin-top: 1rem;
    transition: opacity var(--ssn-transition);
}

.ssn-quiz-submit:hover {
    opacity: 0.85;
}

.ssn-quiz-feedback {
    margin-top: 1rem;
    font-size: 0.88rem;
}

.ssn-correct {
    color: var(--ssn-emerald);
    font-weight: 600;
}

.ssn-incorrect {
    color: var(--ssn-rose);
    font-weight: 600;
}

/* --- 18. Related Skills Result --- */
.ssn-related-skills-result {
    margin: 0 2rem 1rem;
    padding: 1rem;
    background: var(--ssn-bg-card);
    border: 1px solid rgba(139,92,246,0.2);
    border-radius: var(--ssn-radius-md);
    max-width: 100%;
    box-sizing: border-box;
    overflow: hidden;
}

.ssn-related-skills-result h5 {
    font-family: var(--ssn-font-heading);
    font-weight: 600;
    color: var(--ssn-violet-light);
    margin-bottom: 0.75rem;
    font-size: 0.95rem;
}

.ssn-related-skill-btn {
    display: inline-block;
    padding: 0.35rem 0.75rem;
    margin: 0.2rem;
    font-size: 0.8rem;
    font-weight: 500;
    border-radius: 999px;
    border: 1px solid var(--ssn-border);
    color: var(--ssn-text-secondary);
    background: transparent;
    cursor: pointer;
    transition: all var(--ssn-transition);
}

.ssn-related-skill-btn:hover {
    border-color: var(--ssn-violet);
    color: var(--ssn-violet-light);
    background: rgba(139,92,246,0.08);
    transform: translateY(-1px);
}

/* --- Explore Next / Related Topics Cards --- */
.ssn-explore-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 0.65rem;
    margin-top: 0.75rem;
    overflow: hidden;
    max-width: 100%;
}

.ssn-explore-grid-wide {
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
}

.ssn-explore-card {
    display: flex;
    align-items: flex-start;
    flex-wrap: wrap;
    gap: 0.5rem;
    text-align: left;
    padding: 0.85rem 1rem;
    background: #ffffff;
    border: 1px solid #e2e8f0;
    border-radius: var(--ssn-radius-md);
    cursor: pointer;
    transition: all 0.25s ease;
    position: relative;
    overflow: hidden;
    min-width: 0;
    width: 100%;
    box-sizing: border-box;
}

.ssn-explore-card:hover {
    border-color: #c7d2fe;
    background: #fafafe;
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(79,70,229,0.08);
}

.ssn-explore-card:hover .ssn-explore-card-arrow {
    opacity: 1;
    transform: translateX(0);
    color: #4f46e5;
}

.ssn-explore-card:hover .ssn-explore-card-icon {
    background: var(--ssn-gradient-main);
    color: #fff;
}

.ssn-explore-card-icon {
    width: 2.25rem;
    height: 2.25rem;
    min-width: 2.25rem;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--ssn-radius-sm);
    background: #f0f0ff;
    color: #4f46e5;
    font-size: 0.9rem;
    transition: all 0.25s ease;
}

.ssn-explore-card-body {
    flex: 1;
    min-width: 0;
}

.ssn-explore-card-name {
    display: block;
    font-family: var(--ssn-font-heading);
    font-size: 0.92rem;
    font-weight: 600;
    color: #1e293b;
    line-height: 1.3;
    margin-bottom: 0.2rem;
    width: 100%;
    word-wrap: break-word;
    overflow-wrap: break-word;
}

.ssn-explore-card-desc {
    display: block;
    font-size: 0.8rem;
    color: #64748b;
    line-height: 1.5;
    width: 100%;
    word-wrap: break-word;
    overflow-wrap: break-word;
}

.ssn-explore-card-meta {
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    gap: 0.4rem;
    flex-shrink: 0;
}

.ssn-explore-card-level {
    font-size: 0.68rem;
    font-weight: 600;
    padding: 0.15rem 0.5rem;
    border-radius: 999px;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    white-space: nowrap;
}

.ssn-lvl-beginner {
    background: #ecfdf5;
    color: #059669;
    border: 1px solid #a7f3d0;
}

.ssn-lvl-intermediate {
    background: #eef2ff;
    color: #4f46e5;
    border: 1px solid #c7d2fe;
}

.ssn-lvl-advanced {
    background: #fef2f2;
    color: #dc2626;
    border: 1px solid #fecaca;
}

.ssn-explore-card-arrow {
    font-size: 0.8rem;
    color: #94a3b8;
    opacity: 0;
    transform: translateX(-4px);
    transition: all 0.25s ease;
}

/* Large variant for course-level explore */
.ssn-explore-card-lg {
    padding: 1rem 1.15rem;
}

.ssn-explore-card-lg .ssn-explore-card-icon {
    width: 2.5rem;
    height: 2.5rem;
    min-width: 2.5rem;
    font-size: 1rem;
    border-radius: var(--ssn-radius-md);
}

.ssn-explore-card-lg .ssn-explore-card-name {
    font-size: 0.95rem;
}

.ssn-explore-card-lg .ssn-explore-card-desc {
    font-size: 0.82rem;
}

@media (max-width: 640px) {
    .ssn-explore-grid-wide {
        grid-template-columns: 1fr;
    }
    .ssn-explore-card {
        padding: 0.7rem;
        gap: 0.5rem;
    }
    .ssn-explore-card-icon {
        width: 1.75rem;
        height: 1.75rem;
        min-width: 1.75rem;
        font-size: 0.75rem;
    }
    .ssn-explore-card-name {
        font-size: 0.85rem;
    }
    .ssn-explore-card-desc {
        font-size: 0.75rem;
    }
    .ssn-explore-card-meta {
        display: none;
    }
    .ssn-explore-card-arrow {
        opacity: 1;
        transform: translateX(0);
    }
    .ssn-related-skills-result {
        margin: 0 0.75rem 1rem;
        padding: 0.75rem;
    }
    .ssn-related-skill-btn {
        font-size: 0.75rem;
        padding: 0.3rem 0.6rem;
    }
    .ssn-related-topics {
        margin-top: 1rem;
        padding: 0.75rem;
    }
    .ssn-related-title {
        font-size: 0.9rem;
    }
    .ssn-explore-card-lg {
        padding: 0.7rem;
    }
    .ssn-explore-card-lg .ssn-explore-card-icon {
        width: 1.75rem;
        height: 1.75rem;
        min-width: 1.75rem;
        font-size: 0.75rem;
    }
    .ssn-explore-card-lg .ssn-explore-card-name {
        font-size: 0.85rem;
    }
    .ssn-explore-card-lg .ssn-explore-card-desc {
        font-size: 0.75rem;
    }
}

/* --- 19. Related Topics (Course level) --- */
.ssn-related-topics {
    margin-top: 2rem;
    padding: 1.25rem;
    background: var(--ssn-bg-card);
    border: 1px solid var(--ssn-border);
    border-radius: var(--ssn-radius-lg);
}

.ssn-related-title {
    font-family: var(--ssn-font-heading);
    font-weight: 600;
    font-size: 1rem;
    color: var(--ssn-text-primary);
    margin-bottom: 0.75rem;
}

.ssn-related-title i {
    margin-right: 0.4rem;
    color: var(--ssn-violet-light);
}

.ssn-related-list {
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem;
}

.ssn-related-btn-wrap {
    text-align: center;
    margin-top: 1.5rem;
}

/* --- 20. Category Lesson List --- */
.ssn-category-lesson-list {
    list-style: none;
    padding: 0.75rem 2rem 1.5rem;
    margin: 0;
    max-height: calc(75vh - 120px);
    overflow-y: auto;
}

.ssn-category-lesson-list li {
    padding: 0.85rem 1rem;
    margin-bottom: 0.4rem;
    border-radius: var(--ssn-radius-sm);
    border: 1px solid var(--ssn-border-light);
    background: var(--ssn-bg-card);
    cursor: pointer;
    font-size: 0.9rem;
    color: var(--ssn-text-secondary);
    transition: all var(--ssn-transition);
    display: flex;
    align-items: center;
    gap: 0.6rem;
}

.ssn-category-lesson-list li::before {
    content: "\f054";
    font-family: "Font Awesome 6 Free";
    font-weight: 900;
    font-size: 0.7rem;
    color: var(--ssn-cyan);
    opacity: 0;
    transition: opacity 0.2s ease, transform 0.2s ease;
    transform: translateX(-4px);
}

.ssn-category-lesson-list li:hover {
    background: var(--ssn-bg-card-hover);
    border-color: var(--ssn-cyan);
    color: var(--ssn-text-primary);
    transform: translateX(4px);
}

.ssn-category-lesson-list li:hover::before {
    opacity: 1;
    transform: translateX(0);
}

/* --- 21. Animations --- */
@keyframes ssnFadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes ssnSlideUp {
    from { opacity: 0; transform: translateY(16px); }
    to { opacity: 1; transform: translateY(0); }
}

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

/* Stagger animation for segments */
.ssn-lesson-segment:nth-child(1) { animation-delay: 0.05s; }
.ssn-lesson-segment:nth-child(2) { animation-delay: 0.1s; }
.ssn-lesson-segment:nth-child(3) { animation-delay: 0.15s; }
.ssn-lesson-segment:nth-child(4) { animation-delay: 0.2s; }
.ssn-lesson-segment:nth-child(5) { animation-delay: 0.25s; }
.ssn-lesson-segment:nth-child(6) { animation-delay: 0.3s; }
.ssn-lesson-segment:nth-child(7) { animation-delay: 0.35s; }
.ssn-lesson-segment:nth-child(8) { animation-delay: 0.4s; }

/* Stagger for module cards (supports 21 modules) */
.ssn-module-card { animation: ssnSlideUp 0.4s ease forwards; opacity: 0; }
.ssn-module-card:nth-child(1) { animation-delay: 0.03s; }
.ssn-module-card:nth-child(2) { animation-delay: 0.06s; }
.ssn-module-card:nth-child(3) { animation-delay: 0.09s; }
.ssn-module-card:nth-child(4) { animation-delay: 0.12s; }
.ssn-module-card:nth-child(5) { animation-delay: 0.15s; }
.ssn-module-card:nth-child(6) { animation-delay: 0.18s; }
.ssn-module-card:nth-child(7) { animation-delay: 0.21s; }
.ssn-module-card:nth-child(8) { animation-delay: 0.24s; }
.ssn-module-card:nth-child(9) { animation-delay: 0.27s; }
.ssn-module-card:nth-child(10) { animation-delay: 0.30s; }
.ssn-module-card:nth-child(11) { animation-delay: 0.33s; }
.ssn-module-card:nth-child(12) { animation-delay: 0.36s; }
.ssn-module-card:nth-child(13) { animation-delay: 0.39s; }
.ssn-module-card:nth-child(14) { animation-delay: 0.42s; }
.ssn-module-card:nth-child(15) { animation-delay: 0.45s; }
.ssn-module-card:nth-child(16) { animation-delay: 0.48s; }
.ssn-module-card:nth-child(17) { animation-delay: 0.51s; }
.ssn-module-card:nth-child(18) { animation-delay: 0.54s; }
.ssn-module-card:nth-child(19) { animation-delay: 0.57s; }
.ssn-module-card:nth-child(20) { animation-delay: 0.60s; }
.ssn-module-card:nth-child(21) { animation-delay: 0.63s; }

/* --- 22. Responsive --- */
@media (max-width: 768px) {
    .ssn-hero {
        padding: 1.25rem 1.25rem 1.25rem;
    }


    .ssn-search-bar {
        flex-wrap: wrap;
        padding: 0.5rem;
    }

    .ssn-search-input {
        padding: 0.6rem 0.5rem;
    }

    .ssn-generate-btn {
        width: 100%;
        justify-content: center;
        margin-top: 0.25rem;
    }

    .ssn-generate-btn span {
        display: inline;
    }

    .ssn-module-list {
        grid-template-columns: 1fr;
    }

    .ssn-pathway-grid {
        grid-template-columns: 1fr 1fr;
    }

    .ssn-browse-grid {
        grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
    }

    .ssn-mode-switcher {
        max-width: 100%;
    }

    .ssn-categories {
        padding: 2rem 1.25rem;
    }

    .ssn-course-result {
        padding: 1.5rem 1.25rem;
    }

    .ssn-modal-header {
        padding: 1.25rem 1.25rem 0.75rem;
    }

    .ssn-lesson-content {
        padding: 0.75rem;
        overflow: hidden;
    }

    .ssn-lesson-segment {
        padding: 0.75rem;
        overflow: hidden;
    }

    .ssn-lesson-actions {
        padding: 0 1.25rem 0.75rem;
    }

    .ssn-audio-player {
        padding: 0.6rem 1.25rem;
    }

    .ssn-modal-footer {
        padding: 0.75rem 1.25rem 1.25rem;
    }

    .ssn-translate-panel,
    .ssn-quiz-container,
    .ssn-related-skills-result {
        margin-left: 0.75rem;
        margin-right: 0.75rem;
    }

    .ssn-code-block pre {
        padding: 0.75rem;
    }

    .ssn-code-block code {
        font-size: 0.75rem;
    }

    .ssn-segment-content {
        overflow-x: hidden;
    }

    .ssn-category-lesson-list {
        padding: 0.5rem 1.25rem 1.25rem;
    }
}

@media (max-width: 480px) {
    .ssn-pathway-grid {
        grid-template-columns: 1fr;
    }

    .ssn-browse-grid {
        grid-template-columns: 1fr;
    }

    .ssn-browse-tabs {
        gap: 0.35rem;
    }

    .ssn-browse-tab {
        padding: 0.45rem 0.75rem;
        font-size: 0.72rem;
    }

    .ssn-mode-btn {
        font-size: 0.75rem;
        padding: 0.6rem 0.8rem;
    }

    .ssn-mode-btn span {
        display: none;
    }

    .ssn-quick-tags {
        gap: 0.35rem;
    }

    .ssn-quick-tag {
        font-size: 0.72rem;
        padding: 0.3rem 0.65rem;
    }
}

/* --- 23. Scrollbar styling (inside modals) --- */
.ssn-modal-container::-webkit-scrollbar {
    width: 6px;
}

.ssn-modal-container::-webkit-scrollbar-track {
    background: transparent;
}

.ssn-modal-container::-webkit-scrollbar-thumb {
    background: var(--ssn-border);
    border-radius: 999px;
}

.ssn-modal-container::-webkit-scrollbar-thumb:hover {
    background: var(--ssn-text-muted);
}

.ssn-category-lesson-list::-webkit-scrollbar {
    width: 5px;
}

.ssn-category-lesson-list::-webkit-scrollbar-track {
    background: transparent;
}

.ssn-category-lesson-list::-webkit-scrollbar-thumb {
    background: var(--ssn-border);
    border-radius: 999px;
}

/* --- 24. Loading overlay fade-out --- */
.ssn-loading-overlay.ssn-fade-out {
    animation: ssnFadeOut 0.4s ease forwards;
}

@keyframes ssnFadeOut {
    from { opacity: 1; }
    to { opacity: 0; pointer-events: none; }
}

/* ============================================================
   MODULE PAGE STYLES (Frontend child module pages)
   ============================================================ */

.ssn-module-page {
    font-family: var(--ssn-font-body);
    color: var(--ssn-text-primary);
    max-width: 52rem;
    margin: 0 auto;
    padding: 2.5rem 1.5rem;
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Breadcrumb */
.ssn-module-breadcrumb {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    margin-bottom: 1.75rem;
    font-size: 0.9rem;
    color: var(--ssn-text-muted);
    font-weight: 500;
}

.ssn-module-breadcrumb a {
    color: var(--ssn-violet);
    text-decoration: none;
    transition: color var(--ssn-transition);
}

.ssn-module-breadcrumb a:hover {
    color: var(--ssn-violet-dark);
    text-decoration: underline;
}

.ssn-module-breadcrumb span {
    color: var(--ssn-border);
}

.ssn-module-breadcrumb strong {
    color: var(--ssn-text-primary);
    font-weight: 600;
}

/* ── Module Hero ── */
.ssn-mod-hero {
    position: relative;
    background: linear-gradient(135deg, #1e1b4b 0%, #312e81 40%, #4f46e5 100%);
    color: #fff;
    padding: 3rem 2.5rem 2.5rem;
    border-radius: var(--ssn-radius-lg);
    margin-bottom: 2rem;
    overflow: hidden;
}

.ssn-mod-hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse at 30% 20%, rgba(124,58,237,0.25) 0%, transparent 60%),
                radial-gradient(ellipse at 70% 80%, rgba(8,145,178,0.18) 0%, transparent 55%);
    pointer-events: none;
}

.ssn-mod-hero-inner {
    position: relative;
    z-index: 1;
    max-width: 720px;
}

.ssn-mod-hero-badge {
    display: inline-block;
    padding: 0.3rem 0.75rem;
    background: rgba(255,255,255,0.12);
    border: 1px solid rgba(255,255,255,0.2);
    border-radius: 999px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: rgba(255,255,255,0.85);
    margin-bottom: 0.75rem;
    backdrop-filter: blur(4px);
}

.ssn-mod-hero h1 {
    font-family: var(--ssn-font-heading);
    font-size: 2.1rem;
    font-weight: 700;
    color: #fff;
    margin: 0 0 0.75rem;
    line-height: 1.15;
    letter-spacing: -0.02em;
}

.ssn-mod-hero-meta {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.75rem;
}

.ssn-mod-hero-dur {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.35rem 0.8rem;
    background: rgba(255,255,255,0.1);
    border: 1px solid rgba(255,255,255,0.15);
    border-radius: 999px;
    font-size: 0.85rem;
    color: rgba(255,255,255,0.9);
    backdrop-filter: blur(4px);
}

.ssn-mod-hero-gain {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.35rem 0.8rem;
    background: rgba(5,150,105,0.18);
    border: 1px solid rgba(5,150,105,0.3);
    border-radius: 999px;
    font-size: 0.85rem;
    color: #a7f3d0;
    backdrop-filter: blur(4px);
}

/* ── Info Cards ── */
.ssn-mod-info-wrap {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.25rem;
    margin-bottom: 2rem;
}

@media (max-width: 640px) {
    .ssn-mod-info-wrap {
        grid-template-columns: 1fr;
    }
}

.ssn-mod-info-card {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    padding: 1.5rem;
    border-radius: var(--ssn-radius-lg);
    border: 1px solid var(--ssn-border);
    background: var(--ssn-bg-primary);
    box-shadow: var(--ssn-shadow-sm);
    transition: all var(--ssn-transition);
}

.ssn-mod-info-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--ssn-shadow-md);
    border-color: #c7d2fe;
}

.ssn-mod-info-icon {
    width: 2.75rem;
    height: 2.75rem;
    min-width: 2.75rem;
    border-radius: var(--ssn-radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
    flex-shrink: 0;
    background: var(--ssn-gradient-subtle);
    color: var(--ssn-violet);
}

.ssn-mod-info-gain .ssn-mod-info-icon {
    background: rgba(5,150,105,0.08);
    color: var(--ssn-emerald);
}

.ssn-mod-info-body h3 {
    font-family: var(--ssn-font-heading);
    font-size: 1rem;
    font-weight: 700;
    margin: 0 0 0.35rem;
    color: var(--ssn-text-primary);
}

.ssn-mod-info-body p {
    margin: 0;
    color: var(--ssn-text-secondary);
    font-size: 0.92rem;
    line-height: 1.6;
}

/* ── CTA Box ── */
.ssn-mod-cta {
    background: linear-gradient(135deg, #f0f4ff 0%, #ede9fe 50%, #faf5ff 100%);
    border: 1px solid #e0e7ff;
    border-radius: var(--ssn-radius-lg);
    padding: 1.75rem 2rem;
    margin-bottom: 2rem;
    overflow: hidden;
}

.ssn-mod-cta-inner {
    display: flex;
    align-items: center;
    gap: 1.25rem;
    flex-wrap: wrap;
}

.ssn-mod-cta-icon {
    width: 3.5rem;
    height: 3.5rem;
    min-width: 3.5rem;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.4rem;
    background: var(--ssn-gradient-main);
    color: #fff;
    box-shadow: 0 4px 14px rgba(79,70,229,0.25);
    flex-shrink: 0;
}

.ssn-mod-cta-text {
    flex: 1;
    min-width: 200px;
}

.ssn-mod-cta-text h3 {
    font-family: var(--ssn-font-heading);
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--ssn-text-primary);
    margin: 0 0 0.3rem;
}

.ssn-mod-cta-text p {
    margin: 0;
    color: var(--ssn-text-secondary);
    font-size: 0.92rem;
    line-height: 1.55;
}

.ssn-mod-cta-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.7rem 1.4rem;
    background: linear-gradient(135deg, #4338ca 0%, #3730a3 100%);
    color: #ffffff !important;
    font-size: 0.9rem;
    font-weight: 700;
    border: none;
    border-radius: var(--ssn-radius-md);
    cursor: pointer;
    text-decoration: none;
    text-shadow: 0 1px 2px rgba(0,0,0,0.25);
    box-shadow: 0 2px 8px rgba(67,56,202,0.35);
    flex-shrink: 0;
    transition: all var(--ssn-transition);
}

.ssn-mod-cta-btn:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 16px rgba(67,56,202,0.5);
    filter: brightness(1.08);
    color: #ffffff !important;
    text-decoration: none;
}

/* ── Navigation bar ── */
.ssn-mod-nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    padding: 1rem 1.25rem;
    background: var(--ssn-bg-card);
    border: 1px solid var(--ssn-border);
    border-radius: var(--ssn-radius-lg);
    box-shadow: var(--ssn-shadow-sm);
    margin-top: 2rem;
}

.ssn-mod-nav a {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.6rem 1.1rem;
    border-radius: var(--ssn-radius-sm);
    font-size: 0.88rem;
    font-weight: 600;
    text-decoration: none;
    transition: all var(--ssn-transition);
    line-height: 1;
}

.ssn-mod-nav-prev,
.ssn-mod-nav-next {
    color: var(--ssn-violet);
    background: rgba(124,58,237,0.06);
}

.ssn-mod-nav-prev:hover,
.ssn-mod-nav-next:hover {
    background: var(--ssn-violet);
    color: #fff;
}

.ssn-mod-nav-back {
    color: var(--ssn-text-muted);
    font-weight: 500;
    padding: 0.6rem 1rem;
}

.ssn-mod-nav-back:hover {
    color: var(--ssn-text-primary);
}

.ssn-mod-nav-placeholder {
    display: inline-block;
    width: 7rem;
}

/* ── Lesson content wrapper ── */
.ssn-mod-lesson {
    margin-bottom: 2rem;
}

/* Responsive Module */
@media (max-width: 640px) {
    .ssn-module-page {
        padding: 1.5rem 1rem;
    }

    .ssn-mod-hero {
        padding: 2.25rem 1.25rem 2rem;
    }

    .ssn-mod-hero h1 {
        font-size: 1.6rem;
    }

    .ssn-mod-hero-meta {
        gap: 0.5rem;
    }

    .ssn-mod-hero-dur,
    .ssn-mod-hero-gain {
        font-size: 0.8rem;
        padding: 0.3rem 0.65rem;
    }

    .ssn-mod-info-wrap {
        gap: 1rem;
    }

    .ssn-mod-info-card {
        padding: 1.15rem;
    }

    .ssn-mod-cta {
        padding: 1.25rem 1.25rem;
    }

    .ssn-mod-cta-inner {
        flex-direction: column;
        align-items: flex-start;
        gap: 1rem;
    }

    .ssn-mod-cta-btn {
        width: 100%;
        justify-content: center;
    }

    .ssn-mod-nav {
        flex-wrap: wrap;
        justify-content: center;
        gap: 0.6rem;
    }

    .ssn-mod-nav a {
        flex: 1 1 auto;
        justify-content: center;
    }

    .ssn-mod-nav-placeholder {
        display: none;
    }
}

/* ── Markdown-rendered module content ── */
.ssn-module-page h1,
.ssn-module-page h2,
.ssn-module-page h3 {
    font-family: var(--ssn-font-heading);
    font-weight: 700;
    color: var(--ssn-text-primary);
    margin: 2rem 0 0.75rem;
    line-height: 1.25;
}

.ssn-module-page h1 { font-size: 1.6rem; }
.ssn-module-page h2 { font-size: 1.4rem; }
.ssn-module-page h3 { font-size: 1.25rem; }

.ssn-module-page p {
    margin: 0 0 1rem;
    color: var(--ssn-text-secondary);
}

.ssn-module-page a {
    color: var(--ssn-violet);
    text-decoration: none;
    font-weight: 600;
    transition: color var(--ssn-transition);
}

.ssn-module-page a:hover {
    color: var(--ssn-violet-dark);
    text-decoration: underline;
}

.ssn-module-page strong {
    color: var(--ssn-text-primary);
    font-weight: 700;
}

.ssn-module-page em {
    font-style: italic;
    color: var(--ssn-text-secondary);
}

.ssn-module-page code {
    font-family: 'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, monospace;
    font-size: 0.88em;
    background: rgba(30, 41, 59, 0.08);
    color: #1e293b;
    padding: 0.15em 0.4em;
    border-radius: 4px;
}

.ssn-module-page pre {
    background: #1e293b;
    color: #e2e8f0;
    padding: 1rem 1.25rem;
    border-radius: var(--ssn-radius-md);
    overflow-x: auto;
    margin: 1rem 0 1.25rem;
}

.ssn-module-page pre code {
    background: transparent;
    padding: 0;
    color: #e2e8f0;
    font-size: 0.85rem;
}

.ssn-module-page blockquote {
    margin: 1.25rem 0;
    padding: 1rem 1.25rem;
    border-radius: var(--ssn-radius-md);
    border-left: 4px solid var(--ssn-violet);
    background: var(--ssn-bg-card);
    font-style: normal;
}

.ssn-module-page blockquote.ssn-bq-warning {
    border-left-color: var(--ssn-amber);
    background: rgba(245, 158, 11, 0.06);
}

.ssn-module-page blockquote.ssn-bq-success {
    border-left-color: var(--ssn-emerald);
    background: rgba(5, 150, 105, 0.06);
}

.ssn-module-page ul.ssn-list,
.ssn-module-page ol.ssn-list {
    margin: 0 0 1rem 1.25rem;
    padding: 0;
}

.ssn-module-page ul.ssn-list li,
.ssn-module-page ol.ssn-list li {
    margin-bottom: 0.4rem;
    color: var(--ssn-text-secondary);
}

.ssn-module-page ul.ssn-checklist {
    list-style: none;
    margin: 0 0 1rem 0;
    padding: 0;
}

.ssn-module-page ul.ssn-checklist li.ssn-checklist-item {
    display: flex;
    align-items: flex-start;
    gap: 0.6rem;
    margin-bottom: 0.5rem;
    color: var(--ssn-text-secondary);
}

.ssn-module-page ul.ssn-checklist li.ssn-checklist-item input[type="checkbox"] {
    margin-top: 0.25rem;
    accent-color: var(--ssn-violet);
    width: 1rem;
    height: 1rem;
    flex-shrink: 0;
}

.ssn-module-page ul.ssn-checklist li.ssn-checklist-item label {
    line-height: 1.5;
}

.ssn-module-page hr.ssn-divider {
    border: none;
    border-top: 1px solid var(--ssn-border);
    margin: 1.5rem 0;
}

@media (max-width: 640px) {
    .ssn-module-page h1 { font-size: 1.35rem; }
    .ssn-module-page h2 { font-size: 1.2rem; }
    .ssn-module-page h3 { font-size: 1.1rem; }

    .ssn-module-page pre {
        padding: 0.75rem 1rem;
    }

    .ssn-module-page blockquote {
        padding: 0.75rem 1rem;
    }
}

/* ============================================================
   COURSE PATHWAY PAGE STYLES
   ============================================================ */

/* ── Hero ── */
.ssn-pathway-hero {
    position: relative;
    background: linear-gradient(135deg, #1e1b4b 0%, #312e81 40%, #4f46e5 100%);
    color: #fff;
    padding: 3.5rem 2rem 3rem;
    border-radius: var(--ssn-radius-lg);
    margin-bottom: 2.5rem;
    overflow: hidden;
    text-align: center;
}

.ssn-pathway-hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse at 30% 20%, rgba(124,58,237,0.25) 0%, transparent 60%),
                radial-gradient(ellipse at 70% 80%, rgba(8,145,178,0.18) 0%, transparent 55%);
    pointer-events: none;
}

.ssn-pathway-hero-inner {
    position: relative;
    z-index: 1;
    max-width: 720px;
    margin: 0 auto;
}

.ssn-pathway-badge {
    display: inline-block;
    padding: 0.35rem 0.9rem;
    background: rgba(255,255,255,0.12);
    border: 1px solid rgba(255,255,255,0.2);
    border-radius: 999px;
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: rgba(255,255,255,0.9);
    margin-bottom: 1rem;
    backdrop-filter: blur(4px);
}

.ssn-pathway-hero h1 {
    font-family: var(--ssn-font-heading);
    font-size: 2.4rem;
    font-weight: 700;
    color: #fff;
    margin: 0 0 0.75rem;
    line-height: 1.15;
    letter-spacing: -0.02em;
}

.ssn-pathway-subtitle {
    font-size: 1.05rem;
    color: rgba(255,255,255,0.75);
    margin: 0 0 1.75rem;
    line-height: 1.6;
    max-width: 520px;
    margin-left: auto;
    margin-right: auto;
}

/* Stats */
.ssn-pathway-stats {
    display: inline-flex;
    gap: 0.5rem;
    flex-wrap: wrap;
    justify-content: center;
}

.ssn-pathway-stat {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.5rem 1rem;
    background: rgba(255,255,255,0.1);
    border: 1px solid rgba(255,255,255,0.15);
    border-radius: 999px;
    font-size: 0.85rem;
    backdrop-filter: blur(4px);
}

.ssn-stat-num {
    font-weight: 700;
    font-size: 0.95rem;
    color: #fff;
}

.ssn-stat-label {
    color: rgba(255,255,255,0.75);
    font-weight: 500;
}

/* ── Section base ── */
.ssn-pathway-section {
    margin-bottom: 2.5rem;
}

.ssn-pathway-section-head {
    margin-bottom: 1.25rem;
}

.ssn-section-tag {
    display: inline-block;
    padding: 0.25rem 0.7rem;
    background: var(--ssn-gradient-subtle);
    border: 1px solid rgba(79,70,229,0.15);
    border-radius: 999px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--ssn-violet);
    margin-bottom: 0.5rem;
}

.ssn-pathway-section-head h2 {
    font-family: var(--ssn-font-heading);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--ssn-text-primary);
    margin: 0;
    letter-spacing: -0.01em;
}

/* ── Outcomes ── */
.ssn-outcome-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 0.75rem;
}

.ssn-outcome-card {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
    padding: 0.85rem 1rem;
    background: var(--ssn-bg-card);
    border: 1px solid var(--ssn-border);
    border-radius: var(--ssn-radius-md);
    transition: all var(--ssn-transition);
}

.ssn-outcome-card:hover {
    background: var(--ssn-bg-card-hover);
    border-color: #c7d2fe;
    transform: translateY(-2px);
    box-shadow: var(--ssn-shadow-sm);
}

.ssn-outcome-check {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 1.5rem;
    height: 1.5rem;
    background: linear-gradient(135deg, #059669, #10b981);
    color: #fff;
    border-radius: 50%;
    font-size: 0.75rem;
    flex-shrink: 0;
    margin-top: 0.1rem;
}

.ssn-outcome-text {
    font-size: 0.9rem;
    color: var(--ssn-text-secondary);
    line-height: 1.5;
}

/* ── Module Timeline ── */
.ssn-module-timeline {
    position: relative;
    padding-left: 1.5rem;
}

.ssn-module-timeline::before {
    content: '';
    position: absolute;
    left: 1.25rem;
    top: 0;
    bottom: 0;
    width: 2px;
    background: linear-gradient(180deg, #c7d2fe 0%, #e0e7ff 100%);
    border-radius: 1px;
}

.ssn-timeline-row {
    position: relative;
    display: flex;
    gap: 1.25rem;
    margin-bottom: 1.25rem;
    align-items: flex-start;
}

.ssn-timeline-row:last-child {
    margin-bottom: 0;
}

/* Node */
.ssn-timeline-node {
    position: relative;
    z-index: 1;
    flex-shrink: 0;
    width: 2.5rem;
    height: 2.5rem;
    background: linear-gradient(135deg, #4f46e5, #7c3aed);
    color: #fff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 0.85rem;
    box-shadow: 0 2px 8px rgba(79,70,229,0.3), 0 0 0 4px #fff;
    margin-top: 0.25rem;
}

/* Card */
.ssn-timeline-card {
    flex: 1;
    background: var(--ssn-bg-primary);
    border: 1px solid var(--ssn-border);
    border-radius: var(--ssn-radius-lg);
    padding: 1.25rem 1.5rem;
    transition: all var(--ssn-transition);
    position: relative;
}

.ssn-timeline-card:hover {
    border-color: #c7d2fe;
    transform: translateY(-3px);
    box-shadow: 0 8px 24px rgba(79,70,229,0.08), 0 2px 8px rgba(0,0,0,0.04);
}

.ssn-timeline-meta {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 0.4rem;
}

.ssn-timeline-dur {
    display: inline-flex;
    align-items: center;
    gap: 0.3rem;
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--ssn-violet);
    background: rgba(124,58,237,0.06);
    padding: 0.2rem 0.6rem;
    border-radius: 999px;
}

.ssn-timeline-card h3 {
    font-family: var(--ssn-font-heading);
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--ssn-text-primary);
    margin: 0 0 0.4rem;
    line-height: 1.35;
}

.ssn-timeline-card p {
    font-size: 0.92rem;
    color: var(--ssn-text-secondary);
    margin: 0 0 0.6rem;
    line-height: 1.55;
}

.ssn-timeline-gain {
    font-size: 0.85rem;
    color: var(--ssn-emerald);
    background: rgba(5,150,105,0.06);
    padding: 0.4rem 0.75rem;
    border-radius: var(--ssn-radius-sm);
    margin-bottom: 0.75rem;
    line-height: 1.4;
}

.ssn-timeline-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    padding: 0.5rem 1rem;
    background: var(--ssn-gradient-main);
    color: #fff !important;
    font-size: 0.85rem;
    font-weight: 600;
    border-radius: var(--ssn-radius-md);
    text-decoration: none !important;
    transition: all var(--ssn-transition);
    box-shadow: 0 2px 8px rgba(79,70,229,0.25);
}

.ssn-timeline-btn:hover {
    background: var(--ssn-gradient-hover);
    transform: translateX(2px);
    box-shadow: 0 4px 14px rgba(79,70,229,0.35);
}

/* ── CTA ── */
.ssn-pathway-cta {
    position: relative;
    background: linear-gradient(135deg, #f0f4ff 0%, #ede9fe 50%, #faf5ff 100%);
    border: 1px solid #e0e7ff;
    border-radius: var(--ssn-radius-lg);
    padding: 2.5rem 2rem;
    text-align: center;
    overflow: hidden;
}

.ssn-pathway-cta::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(ellipse at 50% 0%, rgba(124,58,237,0.08) 0%, transparent 70%);
    pointer-events: none;
}

.ssn-pathway-cta-inner {
    position: relative;
    z-index: 1;
    max-width: 520px;
    margin: 0 auto;
}

.ssn-pathway-cta h2 {
    font-family: var(--ssn-font-heading);
    font-size: 1.6rem;
    font-weight: 700;
    color: var(--ssn-text-primary);
    margin: 0 0 0.6rem;
}

.ssn-pathway-cta p {
    color: var(--ssn-text-secondary);
    font-size: 1rem;
    margin: 0 0 1.25rem;
    line-height: 1.6;
}

.ssn-pathway-cta-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.85rem 2rem;
    background: var(--ssn-gradient-main);
    color: #fff !important;
    font-size: 1rem;
    font-weight: 600;
    border-radius: var(--ssn-radius-md);
    text-decoration: none !important;
    transition: all var(--ssn-transition);
    box-shadow: 0 4px 14px rgba(79,70,229,0.3);
}

.ssn-pathway-cta-btn:hover {
    background: var(--ssn-gradient-hover);
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(79,70,229,0.4);
}

/* ── Responsive Pathway ── */
@media (max-width: 640px) {
    .ssn-pathway-hero {
        padding: 2.25rem 1.25rem 2rem;
        border-radius: var(--ssn-radius-md);
    }

    .ssn-pathway-hero h1 {
        font-size: 1.75rem;
    }

    .ssn-pathway-subtitle {
        font-size: 0.95rem;
    }

    .ssn-pathway-stats {
        gap: 0.4rem;
    }

    .ssn-pathway-stat {
        padding: 0.4rem 0.8rem;
        font-size: 0.8rem;
    }

    .ssn-outcome-grid {
        grid-template-columns: 1fr;
    }

    .ssn-module-timeline {
        padding-left: 0.5rem;
    }

    .ssn-module-timeline::before {
        left: 1.1rem;
    }

    .ssn-timeline-node {
        width: 2.25rem;
        height: 2.25rem;
        font-size: 0.8rem;
        box-shadow: 0 2px 6px rgba(79,70,229,0.25), 0 0 0 3px #fff;
    }

    .ssn-timeline-card {
        padding: 1rem 1.15rem;
    }

    .ssn-timeline-card h3 {
        font-size: 1rem;
    }

    .ssn-pathway-cta {
        padding: 2rem 1.25rem;
    }

    .ssn-pathway-cta h2 {
        font-size: 1.35rem;
    }
}