/* Step Page Specific Styles */

/* Progress Bar */
.progress-container {
    position: fixed;
    top: 70px;
    left: 0;
    right: 0;
    background-color: var(--surface-color);
    border-bottom: 1px solid var(--border-color);
    padding: 1rem 0;
    z-index: 999;
}

.progress-bar {
    max-width: 1200px;
    margin: 0 auto;
    height: 6px;
    background-color: var(--border-color);
    border-radius: 3px;
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--primary-color), var(--accent-color));
    border-radius: 3px;
    transition: width 0.3s ease;
}

.progress-text {
    text-align: center;
    margin-top: 0.5rem;
    font-size: 0.875rem;
    color: var(--text-secondary);
    font-weight: 500;
}

/* Step Hero */
.step-hero {
    padding: 8rem 0 3rem;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    margin-top: 70px;
}

.step-header {
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
}

.step-badge {
    display: inline-block;
    background-color: var(--accent-color);
    color: white;
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: 1rem;
}

.step-badge.featured {
    background-color: var(--accent-color);
    animation: pulse 2s infinite;
}

.step-hero h1 {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 1rem;
    line-height: 1.1;
}

.step-subtitle {
    font-size: 1.25rem;
    margin-bottom: 2rem;
    color: rgba(255, 255, 255, 0.9);
}

.step-meta {
    display: flex;
    justify-content: center;
    gap: 2rem;
    flex-wrap: wrap;
}

.meta-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.875rem;
    color: rgba(255, 255, 255, 0.8);
}

.meta-icon {
    font-size: 1rem;
}

/* Content Layout */
.step-content {
    padding: 3rem 0;
}

.content-layout {
    display: grid;
    grid-template-columns: 280px 1fr;
    gap: 3rem;
    max-width: 1200px;
    margin: 0 auto;
}

/* Sidebar */
.content-sidebar {
    position: relative;
}

.sidebar-sticky {
    position: sticky;
    top: 150px;
    background-color: var(--surface-color);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-lg);
    padding: 1.5rem;
}

.sidebar-sticky h3 {
    margin-bottom: 1rem;
    color: var(--text-primary);
    font-size: 1.125rem;
}

.content-nav {
    margin-bottom: 2rem;
}

.nav-item {
    display: block;
    padding: 0.5rem 0;
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.875rem;
    transition: var(--transition);
    border-left: 3px solid transparent;
    padding-left: 0.75rem;
}

.nav-item:hover,
.nav-item.active {
    color: var(--primary-color);
    border-left-color: var(--primary-color);
}

/* Progress Tracker */
.progress-tracker h4 {
    margin-bottom: 1rem;
    font-size: 1rem;
    color: var(--text-primary);
}

.tracker-items {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.tracker-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.5rem;
    border-radius: var(--border-radius);
    transition: var(--transition);
}

.tracker-item.completed {
    background-color: rgba(16, 185, 129, 0.1);
}

.tracker-item.current {
    background-color: rgba(37, 99, 235, 0.1);
    border: 1px solid var(--primary-color);
}

.tracker-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 24px;
    height: 24px;
    border-radius: 50%;
    font-size: 0.75rem;
    font-weight: 600;
}

.tracker-item.completed .tracker-icon {
    background-color: var(--success-color);
    color: white;
}

.tracker-item.current .tracker-icon {
    background-color: var(--primary-color);
    color: white;
}

.tracker-item:not(.completed):not(.current) .tracker-icon {
    background-color: var(--border-color);
    color: var(--text-secondary);
}

/* Main Content */
.main-content {
    background-color: var(--surface-color);
    border-radius: var(--border-radius-lg);
    padding: 2rem;
    box-shadow: var(--shadow-sm);
}

.content-section {
    margin-bottom: 3rem;
    padding-bottom: 2rem;
    border-bottom: 1px solid var(--border-color);
}

.content-section:last-child {
    border-bottom: none;
    margin-bottom: 0;
}

.content-section h2 {
    color: var(--text-primary);
    margin-bottom: 1.5rem;
    font-size: 1.75rem;
}

/* Example Cards */
.example-card {
    border-radius: var(--border-radius-lg);
    padding: 1.5rem;
    margin: 1.5rem 0;
    border-left: 4px solid;
}

.example-card.negative {
    background-color: rgba(239, 68, 68, 0.05);
    border-left-color: #ef4444;
}

.example-card.positive {
    background-color: rgba(16, 185, 129, 0.05);
    border-left-color: var(--success-color);
}

.example-header {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 1rem;
}

.example-icon {
    font-size: 1.25rem;
}

.example-header h3 {
    margin: 0;
    font-size: 1.125rem;
}

.example-content p {
    margin-bottom: 0.75rem;
    line-height: 1.6;
}

.example-content p:last-child {
    margin-bottom: 0;
}

/* Insight Box */
.insight-box {
    background: linear-gradient(135deg, rgba(37, 99, 235, 0.1), rgba(245, 158, 11, 0.1));
    border: 1px solid var(--primary-color);
    border-radius: var(--border-radius-lg);
    padding: 1.5rem;
    margin: 2rem 0;
}

.insight-box h3 {
    color: var(--primary-color);
    margin-bottom: 1rem;
    font-size: 1.125rem;
}

/* Technique Structure */
.technique-structure {
    margin: 2rem 0;
}

.structure-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
    margin-top: 1.5rem;
}

.structure-item {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    padding: 1rem;
    background-color: var(--background-color);
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
}

.structure-number {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    background-color: var(--primary-color);
    color: white;
    border-radius: 50%;
    font-weight: 600;
    font-size: 0.875rem;
    flex-shrink: 0;
}

.structure-content h4 {
    margin-bottom: 0.25rem;
    font-size: 1rem;
    color: var(--text-primary);
}

.structure-content p {
    margin: 0;
    font-size: 0.875rem;
    color: var(--text-secondary);
}

/* Example Comparison */
.example-comparison {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
    margin: 2rem 0;
}

/* Architecture Types */
.architecture-types {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
    margin: 2rem 0;
}

.architecture-card {
    background-color: var(--background-color);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-lg);
    padding: 1.5rem;
}

.architecture-card h3 {
    color: var(--primary-color);
    margin-bottom: 1rem;
    font-size: 1.125rem;
}

.architecture-card ol {
    margin: 0;
    padding-left: 1.5rem;
}

.architecture-card li {
    margin-bottom: 0.5rem;
    color: var(--text-secondary);
}

.architecture-card li strong {
    color: var(--text-primary);
}

/* Interactive Example */
.interactive-example {
    background-color: var(--background-color);
    border-radius: var(--border-radius-lg);
    padding: 2rem;
    margin: 2rem 0;
}

.example-tabs {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
    border-bottom: 1px solid var(--border-color);
}

.tab-btn {
    padding: 0.75rem 1rem;
    border: none;
    background: none;
    color: var(--text-secondary);
    cursor: pointer;
    border-bottom: 2px solid transparent;
    transition: var(--transition);
    font-weight: 500;
}

.tab-btn.active,
.tab-btn:hover {
    color: var(--primary-color);
    border-bottom-color: var(--primary-color);
}

.tab-content {
    display: none;
}

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

.example-steps {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.step-item {
    display: flex;
    gap: 1rem;
    padding: 1rem;
    background-color: var(--surface-color);
    border-radius: var(--border-radius);
    border-left: 3px solid var(--primary-color);
}

.step-label {
    font-weight: 600;
    color: var(--primary-color);
    min-width: 100px;
    flex-shrink: 0;
}

.step-text {
    color: var(--text-secondary);
}

/* Exercise Box */
.exercise-box {
    background: linear-gradient(135deg, rgba(16, 185, 129, 0.1), rgba(34, 197, 94, 0.1));
    border: 1px solid var(--success-color);
    border-radius: var(--border-radius-lg);
    padding: 1.5rem;
    margin: 2rem 0;
}

.exercise-box h3 {
    color: var(--success-color);
    margin-bottom: 1rem;
    font-size: 1.125rem;
}

.exercise-checklist {
    margin-top: 1rem;
}

.exercise-checklist label {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 0.75rem;
    cursor: pointer;
    color: var(--text-secondary);
    transition: var(--transition);
}

.exercise-checklist label:hover {
    color: var(--text-primary);
}

.exercise-checklist input[type="checkbox"] {
    width: 18px;
    height: 18px;
    accent-color: var(--success-color);
}

/* Step Navigation */
.step-navigation {
    display: flex;
    justify-content: space-between;
    gap: 1rem;
    margin-top: 3rem;
    padding-top: 2rem;
    border-top: 1px solid var(--border-color);
}

.nav-btn {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem 1.5rem;
    background-color: var(--surface-color);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-lg);
    text-decoration: none;
    transition: var(--transition);
    flex: 1;
    max-width: 300px;
}

.nav-btn:hover {
    border-color: var(--primary-color);
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.nav-btn.prev {
    justify-content: flex-start;
}

.nav-btn.next {
    justify-content: flex-end;
    margin-left: auto;
}

.nav-icon {
    font-size: 1.5rem;
    color: var(--primary-color);
}

.nav-content {
    display: flex;
    flex-direction: column;
    text-align: left;
}

.nav-btn.next .nav-content {
    text-align: right;
}

.nav-label {
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-bottom: 0.25rem;
}

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

/* Step Navigation in Header */
.step-nav {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.step-nav-btn {
    padding: 0.5rem 1rem;
    background-color: var(--primary-color);
    color: white;
    text-decoration: none;
    border-radius: var(--border-radius);
    font-size: 0.875rem;
    font-weight: 500;
    transition: var(--transition);
}

.step-nav-btn:hover {
    background-color: var(--primary-dark);
}

.step-indicator {
    padding: 0.5rem 1rem;
    background-color: var(--accent-color);
    color: white;
    border-radius: var(--border-radius);
    font-weight: 600;
    font-size: 0.875rem;
}

/* Responsive Design */
@media (max-width: 1024px) {
    .content-layout {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .sidebar-sticky {
        position: static;
        margin-bottom: 2rem;
    }

    .progress-tracker {
        display: none;
    }
}

@media (max-width: 768px) {
    .step-hero {
        padding: 6rem 0 2rem;
    }

    .step-hero h1 {
        font-size: 2rem;
    }

    .step-meta {
        flex-direction: column;
        gap: 1rem;
    }

    .main-content {
        padding: 1.5rem;
    }

    .example-comparison {
        grid-template-columns: 1fr;
    }

    .architecture-types {
        grid-template-columns: 1fr;
    }

    .structure-grid {
        grid-template-columns: 1fr;
    }

    .step-navigation {
        flex-direction: column;
    }

    .nav-btn {
        max-width: none;
    }

    .nav-btn.next {
        margin-left: 0;
    }

    .step-nav {
        flex-direction: column;
        gap: 0.5rem;
    }

    .example-tabs {
        flex-direction: column;
    }

    .tab-btn {
        text-align: left;
        border-bottom: none;
        border-left: 2px solid transparent;
        padding-left: 1rem;
    }

    .tab-btn.active,
    .tab-btn:hover {
        border-left-color: var(--primary-color);
        border-bottom-color: transparent;
    }
}

@media (max-width: 480px) {
    .progress-container {
        padding: 0.75rem 1rem;
    }

    .step-hero {
        padding: 5rem 0 2rem;
    }

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

    .main-content {
        padding: 1rem;
    }

    .step-item {
        flex-direction: column;
        gap: 0.5rem;
    }

    .step-label {
        min-width: auto;
    }
}