:root {
    --bg-primary: #1f1f1f;
    --bg-secondary: #3a3a3a;
    --bg-tertiary: #4a4a4a;
    --text-primary: #e0e0e0;
    --text-secondary: #b0b0b0;
    --accent-primary: #3b82f6;
    --accent-hover: #60a5fa;
    --border-color: #404040;
    --success: #4ade80;
}

/* Apply dark theme globally */
body {
    background-color: var(--bg-primary);
    color: var(--text-primary);
}

/* Simple page layout (developer, teacher pages) */
.simple-page {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem 1rem;
}

.page-header {
    text-align: center;
    margin-bottom: 3rem;
    padding-bottom: 2rem;
    border-bottom: 2px solid var(--border-color);
}

.page-header h1 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.page-header .subtitle {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: 1rem;
}

.work-badge {
    display: inline-block;
    background-color: var(--bg-secondary);
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-size: 0.9rem;
    color: var(--accent-primary);
    border: 1px solid var(--accent-primary);
}

/* Content sections */
.content-section {
    margin-bottom: 3rem;
}

.content-section h2 {
    font-size: 2rem;
    margin-bottom: 1.5rem;
    color: var(--text-primary);
}

.content-section h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

/* Service cards */
.main-services {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.service-card {
    background-color: var(--bg-secondary);
    padding: 2rem;
    border-radius: 8px;
    border: 1px solid var(--border-color);
}

.service-card h3 {
    font-size: 1.25rem;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.service-card p {
    color: var(--text-secondary);
    line-height: 1.6;
}

/* Approach steps */
.approach-steps {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.step {
    display: flex;
    gap: 1.5rem;
    background-color: var(--bg-secondary);
    padding: 1.5rem;
    border-radius: 8px;
    border: 1px solid var(--border-color);
}

.step-number {
    font-size: 2rem;
    font-weight: bold;
    color: var(--accent-primary);
    flex-shrink: 0;
}

.step-content h3 {
    font-size: 1.25rem;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.step-content p {
    color: var(--text-secondary);
    line-height: 1.6;
}

/* Skills grid */
.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
}

.skill-category {
    background-color: var(--bg-secondary);
    padding: 1.5rem;
    border-radius: 8px;
    border: 1px solid var(--border-color);
}

.skill-category h3 {
    font-size: 1.25rem;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.skill-category ul {
    list-style: none;
    padding: 0;
}

.skill-category li {
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
    padding-left: 1.5rem;
    position: relative;
}

.skill-category li:before {
    content: "•";
    color: var(--accent-primary);
    position: absolute;
    left: 0;
}

/* Projects */
.project-category {
    font-size: 1.5rem;
    margin: 2rem 0 1rem;
    color: var(--text-primary);
}

.projects {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.project {
    background-color: var(--bg-secondary);
    padding: 1.5rem;
    border-radius: 8px;
    border: 1px solid var(--border-color);
}

.project-type {
    font-size: 0.85rem;
    color: var(--accent-primary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 0.5rem;
}

.project h3 {
    font-size: 1.25rem;
    margin-bottom: 0.75rem;
    color: var(--text-primary);
}

.project p {
    color: var(--text-secondary);
    line-height: 1.6;
}

/* Experience items (teacher page) */
.experience-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
}

.experience-item {
    background-color: var(--bg-secondary);
    padding: 1.5rem;
    border-radius: 8px;
    border: 1px solid var(--border-color);
}

.experience-item h4 {
    font-size: 1.25rem;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.experience-item p {
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 0.5rem;
}

/* Responsive */
@media (max-width: 768px) {
    .simple-page {
        padding: 1rem;
    }

    .page-header h1 {
        font-size: 2rem;
    }

    .main-services,
    .skills-grid,
    .projects,
    .experience-cards {
        grid-template-columns: 1fr;
    }

    .step {
        flex-direction: column;
    }
}