/* Cloud AI Learning Hub - Main Stylesheet */

:root {
    /* Color Palette */
    --primary-dark: #1a1a2e;
    --primary-medium: #16213e;
    --primary-light: #0f3460;
    --accent-blue: #4A90E2;
    --accent-green: #4CAF50;
    --accent-orange: #FF9500;
    --accent-purple: #9C27B0;
    --text-primary: #E0E0E0;
    --text-secondary: #B0B0B0;
    --text-accent: #64B5F6;
    --background-dark: #0a0a0a;
    --background-card: #1e1e2e;
    --border-color: #2a2a3e;
    --success: #4CAF50;
    --warning: #FFC107;
    --error: #F44336;
    --info: #2196F3;
    
    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-xxl: 3rem;
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-medium: 0.3s ease;
    --transition-slow: 0.5s ease;
    
    /* Border Radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --radius-round: 50%;
    
    /* Shadows */
    --shadow-sm: 0 2px 4px rgba(0,0,0,0.2);
    --shadow-md: 0 4px 8px rgba(0,0,0,0.3);
    --shadow-lg: 0 8px 16px rgba(0,0,0,0.4);
    --shadow-glow: 0 0 20px rgba(74, 144, 226, 0.3);
}

/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background: linear-gradient(135deg, var(--background-dark) 0%, var(--primary-dark) 100%);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    overflow-x: hidden;
}

/* Container */
.cloud-ai-container {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    position: relative;
}

/* Header Styles */
.local-header,
.cloud-header {
    background: var(--primary-medium);
    border-bottom: 2px solid var(--accent-blue);
    padding: var(--spacing-md) var(--spacing-xl);
    position: sticky;
    top: 0;
    z-index: 1000;
    backdrop-filter: blur(10px);
    background: rgba(22, 33, 62, 0.95);
}

.header-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    max-width: 1400px;
    margin: 0 auto;
}

.logo-section {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.logo-icon {
    font-size: 2.5rem;
    animation: float 3s ease-in-out infinite;
}

.logo-text h1 {
    font-size: 1.8rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--accent-blue), var(--accent-green));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.logo-text p {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-top: -0.25rem;
}

/* Navigation */
.main-nav {
    display: flex;
    gap: var(--spacing-sm);
}

.nav-btn {
    background: transparent;
    border: 2px solid transparent;
    color: var(--text-secondary);
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
    font-size: 1rem;
    font-weight: 500;
}

.nav-btn:hover {
    color: var(--text-primary);
    background: rgba(74, 144, 226, 0.1);
    border-color: var(--accent-blue);
}

.nav-btn.active {
    color: var(--accent-blue);
    background: rgba(74, 144, 226, 0.2);
    border-color: var(--accent-blue);
}

/* User Progress */
.user-progress {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.progress-ring {
    position: relative;
    width: 50px;
    height: 50px;
}

.progress-ring svg {
    transform: rotate(-90deg);
}

.progress-ring circle:last-child {
    stroke-dasharray: 125.6;
    stroke-dashoffset: 94.2;
    transition: stroke-dashoffset var(--transition-slow);
}

.progress-text {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 0.75rem;
    font-weight: bold;
    color: var(--accent-green);
}

.progress-info {
    display: flex;
    flex-direction: column;
}

.level {
    font-weight: 600;
    color: var(--text-primary);
}

.xp {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

/* Header Bottom Bar */
.header-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-sm) var(--spacing-xl);
    background: rgba(0, 0, 0, 0.2);
    border-top: 1px solid rgba(74, 144, 226, 0.2);
    margin-top: var(--spacing-md);
}

.quick-tip-inline {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    flex: 1;
}

.tip-label {
    font-size: 0.9rem;
    color: var(--accent-orange);
    font-weight: 600;
}

.tip-text-carousel {
    position: relative;
    flex: 1;
    height: 20px;
    overflow: hidden;
}

.tip-text {
    position: absolute;
    left: 0;
    top: 0;
    width: 100%;
    color: var(--text-secondary);
    font-size: 0.85rem;
    opacity: 0;
    transition: opacity var(--transition-medium);
}

.tip-text.active {
    opacity: 1;
}

.achievements-inline {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.achievements-label {
    font-size: 1rem;
    color: var(--accent-green);
}

.achievement-icons {
    display: flex;
    gap: var(--spacing-xs);
}

.achievement-mini {
    font-size: 1.2rem;
    opacity: 0.3;
    filter: grayscale(1);
    transition: all var(--transition-fast);
    cursor: pointer;
}

.achievement-mini.earned {
    opacity: 1;
    filter: grayscale(0);
}

.achievement-mini:hover {
    transform: scale(1.2);
}

/* Main Content */
.local-main,
.cloud-main {
    flex: 1;
    display: flex;
    flex-direction: column;
    max-width: 1400px;
    margin: 0 auto;
    width: 100%;
    padding: var(--spacing-xl);
    gap: var(--spacing-xl);
}

/* Content Sections */
.content-section {
    display: none;
    flex: 1;
    animation: fadeIn var(--transition-medium);
}

.content-section.active {
    display: block;
}

.section-header {
    margin-bottom: var(--spacing-xl);
}

.section-header h2 {
    font-size: 2rem;
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
}

.section-header p {
    color: var(--text-secondary);
    font-size: 1.1rem;
}

/* Provider Cards Grid */
.providers-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
}

.provider-card {
    background: var(--background-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    transition: all var(--transition-medium);
    position: relative;
    overflow: hidden;
}

.provider-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--accent-blue), var(--accent-green));
    transform: scaleX(0);
    transition: transform var(--transition-medium);
}

.provider-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
    border-color: var(--accent-blue);
}

.provider-card:hover::before {
    transform: scaleX(1);
}

.provider-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-md);
}

.provider-logo {
    padding: var(--spacing-sm) var(--spacing-md);
    background: rgba(74, 144, 226, 0.1);
    border-radius: var(--radius-md);
}

.logo-text {
    font-weight: 600;
    color: var(--accent-blue);
}

.provider-badge {
    background: linear-gradient(135deg, var(--accent-blue), var(--accent-purple));
    color: white;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
}

.provider-card h3 {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-md);
    color: var(--text-primary);
}

.provider-models {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
    margin-bottom: var(--spacing-md);
}

.model-tag {
    background: rgba(74, 144, 226, 0.2);
    color: var(--text-accent);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-sm);
    font-size: 0.85rem;
    border: 1px solid rgba(74, 144, 226, 0.3);
}

.provider-strengths,
.unique-features {
    margin-bottom: var(--spacing-md);
}

.provider-strengths h4,
.unique-features h4 {
    color: var(--text-primary);
    font-size: 1rem;
    margin-bottom: var(--spacing-sm);
}

.provider-strengths ul,
.unique-features ul {
    list-style: none;
}

.provider-strengths li,
.unique-features li {
    color: var(--text-secondary);
    padding: var(--spacing-xs) 0;
    font-size: 0.9rem;
}

.provider-actions {
    display: flex;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-lg);
}

/* Button styles */
.try-btn {
    flex: 1;
    padding: 0.75rem 1.5rem;
    background: transparent;
    color: #4a9eff;
    border: 1px solid #4a9eff;
    border-radius: 8px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    text-align: center;
    width: 100%;
}

.try-btn:hover {
    background: rgba(74, 158, 255, 0.1);
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(74, 158, 255, 0.2);
}


/* Footer */
.cloud-footer {
    background: var(--primary-medium);
    border-top: 1px solid var(--border-color);
    padding: var(--spacing-xl) var(--spacing-xl) var(--spacing-md);
    margin-top: auto;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-xl);
    max-width: 1400px;
    margin: 0 auto var(--spacing-lg);
}

.footer-section h4 {
    color: var(--text-primary);
    margin-bottom: var(--spacing-md);
    font-size: 1rem;
}

.footer-section a {
    display: block;
    color: var(--text-secondary);
    text-decoration: none;
    padding: var(--spacing-xs) 0;
    transition: color var(--transition-fast);
    font-size: 0.9rem;
}

.footer-section a:hover {
    color: var(--accent-blue);
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1400px;
    margin: 0 auto;
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--border-color);
}

.footer-bottom span {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.theme-toggle {
    background: transparent;
    border: 2px solid var(--border-color);
    color: var(--text-primary);
    padding: var(--spacing-sm);
    border-radius: var(--radius-md);
    cursor: pointer;
    font-size: 1.2rem;
    transition: all var(--transition-fast);
}

.theme-toggle:hover {
    background: var(--accent-blue);
    border-color: var(--accent-blue);
    transform: rotate(20deg);
}

/* Animations */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes float {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-10px);
    }
}

/* Responsive Design */
@media (max-width: 1200px) {
    .providers-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 992px) {
    .header-bottom {
        flex-direction: column;
        gap: var(--spacing-sm);
        align-items: flex-start;
    }
    
    .quick-tip-inline {
        width: 100%;
    }
    
    .achievements-inline {
        width: 100%;
        justify-content: center;
    }
}

@media (max-width: 768px) {
    .header-content {
        flex-direction: column;
        gap: var(--spacing-md);
    }
    
    .main-nav {
        width: 100%;
        justify-content: center;
        flex-wrap: wrap;
    }
    
    .providers-grid {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
    }
    
    .header-bottom {
        padding: var(--spacing-xs) var(--spacing-md);
    }
    
    .tip-text {
        font-size: 0.8rem;
    }
    
    .achievement-mini {
        font-size: 1rem;
    }
}

/* Credit Notification Styles */
.credit-notification {
    position: fixed;
    right: -400px;
    top: 50%;
    transform: translateY(-50%);
    z-index: 10001;
    transition: right 0.5s cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

.credit-notification.show {
    right: 20px;
}

.credit-notification.hide {
    right: -400px;
}

.credit-content {
    background: linear-gradient(135deg, #d4a574 0%, #8b6f47 100%);
    color: white;
    padding: 18px 24px;
    border-radius: 12px 0 0 12px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.3);
    display: flex;
    align-items: center;
    gap: 15px;
    position: relative;
    min-width: 280px;
    border-left: 4px solid rgba(255, 255, 255, 0.3);
    overflow: hidden;
}

.credit-content::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: linear-gradient(
        45deg,
        transparent,
        rgba(255, 255, 255, 0.1),
        transparent
    );
    animation: shimmer 3s infinite;
}

.credit-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 8px;
    flex-shrink: 0;
}

.credit-icon svg {
    width: 24px;
    height: 24px;
    animation: float 2s ease-in-out infinite;
}

.credit-text {
    display: flex;
    flex-direction: column;
    flex: 1;
    position: relative;
    z-index: 1;
}

.credit-label {
    font-size: 0.85rem;
    opacity: 0.9;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    font-weight: 500;
}

.credit-name {
    font-size: 1.2rem;
    font-weight: 700;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

/* Mobile adjustments for credit notification */
@media (max-width: 768px) {
    .credit-notification {
        right: -350px;
        top: auto;
        bottom: 20px;
        transform: none;
    }
    
    .credit-notification.show {
        right: 0;
    }
    
    .credit-content {
        border-radius: 12px 0 0 12px;
        min-width: 260px;
        padding: 14px 18px;
    }
    
    .credit-name {
        font-size: 1rem;
    }
}

/* Quiz Modal Styles */
.quiz-modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.9);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10000;
    animation: fadeIn 0.3s ease;
}

.quiz-content {
    background: var(--background-card);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    max-width: 600px;
    width: 90%;
    max-height: 80vh;
    overflow-y: auto;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
    border: 2px solid var(--accent-blue);
}

.quiz-content h2 {
    color: var(--text-primary);
    margin-bottom: var(--spacing-lg);
    text-align: center;
}

.quiz-header {
    margin-bottom: var(--spacing-xl);
}

.quiz-progress {
    margin-top: var(--spacing-md);
}

.quiz-progress span {
    color: var(--text-secondary);
    font-size: 0.9rem;
    display: block;
    margin-bottom: var(--spacing-sm);
}

.quiz-progress .progress-bar {
    height: 8px;
    background: var(--primary-medium);
    border-radius: var(--radius-sm);
    overflow: hidden;
}

.quiz-progress .progress-fill {
    height: 100%;
    background: var(--accent-blue);
    transition: width 0.3s ease;
}

.quiz-question {
    background: var(--primary-medium);
    padding: var(--spacing-lg);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-lg);
}

.quiz-question p {
    color: var(--text-primary);
    font-size: 1.1rem;
    line-height: 1.6;
}

.quiz-options {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.quiz-option-btn {
    background: var(--primary-medium);
    border: 2px solid var(--border-color);
    color: var(--text-primary);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
    text-align: left;
    font-size: 1rem;
}

.quiz-option-btn:hover:not(:disabled) {
    background: rgba(74, 144, 226, 0.1);
    border-color: var(--accent-blue);
    transform: translateX(5px);
}

.quiz-option-btn:disabled {
    cursor: not-allowed;
    opacity: 0.7;
}

.quiz-option-btn.correct {
    background: rgba(76, 175, 80, 0.2);
    border-color: var(--accent-green);
    color: var(--accent-green);
}

.quiz-option-btn.incorrect {
    background: rgba(244, 67, 54, 0.2);
    border-color: var(--error);
    color: var(--error);
}

.quiz-feedback {
    margin-top: var(--spacing-lg);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
}

/* Quiz Results Styling */
.quiz-results .score-display {
    text-align: center;
    margin: var(--spacing-xl) 0;
}

.score-circle {
    width: 120px;
    height: 120px;
    border-radius: 50%;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    font-weight: bold;
    margin-bottom: var(--spacing-md);
}

.score-circle.passed {
    background: rgba(76, 175, 80, 0.2);
    border: 3px solid var(--accent-green);
    color: var(--accent-green);
}

.score-circle.failed {
    background: rgba(244, 67, 54, 0.2);
    border: 3px solid var(--error);
    color: var(--error);
}

.score-text {
    color: var(--text-secondary);
    font-size: 1.1rem;
}

.pass-message,
.fail-message {
    background: var(--primary-medium);
    padding: var(--spacing-lg);
    border-radius: var(--radius-md);
    margin: var(--spacing-lg) 0;
}

.pass-message p,
.fail-message p {
    margin: var(--spacing-sm) 0;
    color: var(--text-primary);
}

.answer-review {
    margin-top: var(--spacing-xl);
}

.answer-review h3 {
    color: var(--text-primary);
    margin-bottom: var(--spacing-lg);
}

.answer-list {
    max-height: 300px;
    overflow-y: auto;
}

.answer-item {
    background: var(--primary-medium);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-md);
    border-left: 4px solid;
}

.answer-item.correct {
    border-left-color: var(--accent-green);
}

.answer-item.incorrect {
    border-left-color: var(--error);
}

.answer-header {
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
}

.answer-question {
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
}

.answer-selected,
.answer-correct {
    color: var(--text-secondary);
    font-size: 0.95rem;
    margin: var(--spacing-xs) 0;
}

.answer-explanation {
    color: var(--accent-blue);
    font-style: italic;
    margin-top: var(--spacing-sm);
    padding-top: var(--spacing-sm);
    border-top: 1px solid var(--border-color);
}

.quiz-close {
    background: var(--accent-blue);
    color: white;
    border: none;
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: var(--radius-md);
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-fast);
    margin-top: var(--spacing-lg);
    display: block;
    margin-left: auto;
    margin-right: auto;
}

.quiz-close:hover {
    background: #357ABD;
    transform: scale(1.02);
}

.correct-feedback {
    color: var(--accent-green);
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
}

.incorrect-feedback {
    color: var(--error);
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
}

.xp-earned {
    color: var(--accent-orange);
    font-weight: 600;
    font-size: 1.1rem;
}

.quiz-close {
    display: block;
    width: 100%;
    padding: var(--spacing-md);
    background: var(--accent-blue);
    color: white;
    border: none;
    border-radius: var(--radius-md);
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-fast);
    margin-top: var(--spacing-lg);
}

.quiz-close:hover {
    background: #357ABD;
    transform: scale(1.02);
}

/* Learning Path Module List */
.modules-list {
    margin: var(--spacing-lg) 0;
}

.module-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) 0;
    color: var(--text-secondary);
    font-size: 0.95rem;
}

.module-icon {
    font-size: 1.2rem;
}

.module-duration {
    margin-left: auto;
    color: var(--text-dim);
    font-size: 0.85rem;
}

/* Path Actions */
.path-actions {
    display: flex;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-lg);
}

/* Start Learning Button */
.start-learning-btn {
    flex: 1;
    padding: var(--spacing-md);
    background: var(--accent-blue);
    color: white;
    border: none;
    border-radius: var(--radius-md);
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.start-learning-btn:hover:not(:disabled) {
    background: #357ABD;
    transform: scale(1.02);
}

.start-learning-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* Quiz Button in Path Cards */
.quiz-btn {
    flex: 1;
    padding: var(--spacing-md);
    background: var(--accent-green);
    color: white;
    border: none;
    border-radius: var(--radius-md);
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.quiz-btn:hover:not(:disabled) {
    background: #45a049;
    transform: scale(1.02);
}

.quiz-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* Module Modal Styles */
.module-modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.9);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10000;
    animation: fadeIn 0.3s ease;
}

.module-content {
    background: var(--background-card);
    border-radius: var(--radius-lg);
    width: 90%;
    max-width: 900px;
    height: 85vh;
    display: flex;
    flex-direction: column;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
    border: 2px solid var(--accent-blue);
}

.module-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-lg);
    background: var(--primary-medium);
    border-radius: var(--radius-lg) var(--radius-lg) 0 0;
}

.module-back,
.module-close {
    background: transparent;
    color: var(--text-primary);
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    transition: transform var(--transition-fast);
}

.module-back:hover,
.module-close:hover {
    transform: scale(1.1);
}

.module-progress {
    padding: var(--spacing-md) var(--spacing-lg);
    background: var(--background-secondary);
}

.module-steps {
    display: flex;
    justify-content: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

.module-steps .step {
    width: 30px;
    height: 30px;
    border-radius: 50%;
    background: var(--primary-medium);
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
}

.module-steps .step.active {
    background: var(--accent-green);
    color: white;
}

.module-body {
    flex: 1;
    overflow-y: auto;
    padding: var(--spacing-xl);
}

.lesson-content h3 {
    color: var(--text-primary);
    margin-bottom: var(--spacing-lg);
}

.lesson-content h4 {
    color: var(--accent-blue);
    margin: var(--spacing-lg) 0 var(--spacing-md) 0;
}

.lesson-interactive {
    margin-top: var(--spacing-xl);
}

.code-example {
    background: var(--primary-dark);
    padding: var(--spacing-lg);
    border-radius: var(--radius-md);
    margin: var(--spacing-md) 0;
}

.code-example pre {
    color: var(--accent-green);
    font-family: 'Monaco', 'Courier New', monospace;
    overflow-x: auto;
}

.module-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-lg);
    background: var(--primary-medium);
    border-radius: 0 0 var(--radius-lg) var(--radius-lg);
}

.module-nav-btn,
.module-complete-btn {
    padding: var(--spacing-sm) var(--spacing-lg);
    background: var(--accent-blue);
    color: white;
    border: none;
    border-radius: var(--radius-md);
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.module-nav-btn:hover,
.module-complete-btn:hover {
    background: #357ABD;
    transform: scale(1.02);
}

.module-nav-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.module-complete-btn {
    background: var(--accent-green);
}

.module-complete-btn:hover {
    background: #45a049;
}

/* Locked Content Overlay */
.locked-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.85);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-lg);
    z-index: 10;
    backdrop-filter: blur(5px);
}

.lock-icon {
    font-size: 3rem;
    margin-bottom: var(--spacing-md);
}

.locked-overlay p {
    color: var(--text-primary);
    font-weight: 600;
    font-size: 1.1rem;
}

.path-card {
    position: relative;
}

.path-card.unlocked .locked-overlay {
    display: none;
}

/* Unlock Notification */
.unlock-notification {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background: linear-gradient(135deg, var(--accent-blue), var(--accent-purple));
    padding: var(--spacing-xl);
    border-radius: var(--radius-lg);
    color: white;
    text-align: center;
    z-index: 10000;
    animation: scaleIn 0.5s ease;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.4);
}

.unlock-notification h3 {
    margin-bottom: var(--spacing-sm);
}

/* Utility Classes */
.hidden {
    display: none !important;
}

.visible {
    display: block !important;
}

.text-center {
    text-align: center;
}

.mt-1 { margin-top: var(--spacing-sm); }
.mt-2 { margin-top: var(--spacing-md); }
.mt-3 { margin-top: var(--spacing-lg); }

.mb-1 { margin-bottom: var(--spacing-sm); }
.mb-2 { margin-bottom: var(--spacing-md); }
.mb-3 { margin-bottom: var(--spacing-lg); }

.p-1 { padding: var(--spacing-sm); }
.p-2 { padding: var(--spacing-md); }
.p-3 { padding: var(--spacing-lg); }