:root {
    --primary-green: #10b981;
    --dark-green: #059669;
    --light-green: #d1fae5;
    --very-light-green: #f0fdf4;
    --dark-bg: #0f172a;
    --text-primary: #1e293b;
    --text-secondary: #64748b;
    --white: #ffffff;
    --border-color: #e2e8f0;
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--white);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Language Switcher */
.language-switcher {
    position: fixed;
    top: 2rem;
    right: 2rem;
    display: flex;
    gap: 0.5rem;
    z-index: 1000;
    background-color: var(--white);
    padding: 0.5rem;
    border-radius: 50px;
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.1);
}

.lang-btn {
    padding: 0.5rem 1rem;
    border: none;
    background-color: transparent;
    color: var(--text-secondary);
    font-weight: 600;
    font-size: 0.875rem;
    cursor: pointer;
    border-radius: 50px;
    transition: all 0.3s ease;
    font-family: 'Inter', sans-serif;
}

.lang-btn:hover {
    background-color: var(--very-light-green);
    color: var(--dark-green);
}

.lang-btn.active {
    background-color: var(--primary-green);
    color: var(--white);
}

.container {
    max-width: 900px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    background: linear-gradient(135deg, var(--very-light-green) 0%, var(--white) 100%);
    margin: 0 -20px;
    padding: 0 20px;
}

.hero-content {
    animation: fadeInUp 0.8s ease-out;
}

.name {
    font-size: clamp(2.5rem, 6vw, 4rem);
    font-weight: 700;
    color: var(--dark-bg);
    margin-bottom: 1rem;
    letter-spacing: -0.02em;
}

.tagline {
    font-size: clamp(1.2rem, 3vw, 1.5rem);
    color: var(--text-secondary);
    margin-bottom: 2.5rem;
    font-weight: 400;
}

.social-links {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

.social-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    background-color: var(--primary-green);
    color: var(--white);
    text-decoration: none;
    border-radius: 8px;
    font-weight: 500;
    transition: all 0.3s ease;
    box-shadow: 0 2px 8px rgba(16, 185, 129, 0.2);
}

.social-btn:hover {
    background-color: var(--dark-green);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(16, 185, 129, 0.3);
}

/* Sections */
section {
    padding: 5rem 0;
}

h2 {
    font-size: clamp(2rem, 4vw, 2.5rem);
    font-weight: 700;
    color: var(--dark-bg);
    margin-bottom: 3rem;
    position: relative;
    padding-bottom: 1rem;
}

h2::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: 0;
    width: 60px;
    height: 4px;
    background-color: var(--primary-green);
    border-radius: 2px;
}

/* About Section */
.about-text {
    font-size: 1.125rem;
    line-height: 1.8;
    color: var(--text-secondary);
    max-width: 700px;
}

/* CV Download Section */
.cv-download {
    margin-top: 2.5rem;
    padding: 2rem;
    background-color: var(--very-light-green);
    border-radius: 12px;
    border: 2px solid var(--light-green);
}

.cv-download h3 {
    font-size: 1.25rem;
    color: var(--dark-bg);
    margin-bottom: 1.5rem;
    font-weight: 600;
}

.cv-buttons {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.cv-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.875rem 1.5rem;
    background-color: var(--primary-green);
    color: var(--white);
    text-decoration: none;
    border-radius: 8px;
    font-weight: 600;
    font-size: 1rem;
    transition: all 0.3s ease;
    box-shadow: 0 2px 8px rgba(16, 185, 129, 0.2);
}

.cv-btn:hover {
    background-color: var(--dark-green);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(16, 185, 129, 0.3);
}

.cv-btn svg {
    flex-shrink: 0;
}

/* Projects Section */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.project-card {
    background-color: var(--white);
    border-radius: 12px;
    overflow: hidden;
    border: 2px solid var(--border-color);
    transition: all 0.3s ease;
    position: relative;
}

.project-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 24px rgba(16, 185, 129, 0.15);
    border-color: var(--light-green);
}

.status-badge {
    position: absolute;
    top: 1rem;
    right: 1rem;
    background-color: var(--primary-green);
    color: white;
    padding: 0.4rem 0.9rem;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
    z-index: 10;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
}

.project-image {
    width: 100%;
    height: 200px;
    overflow: hidden;
    background: linear-gradient(135deg, var(--very-light-green) 0%, var(--light-green) 100%);
}

.project-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.project-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary-green);
}

.project-content {
    padding: 1.5rem;
}

.project-content h3 {
    font-size: 1.25rem;
    color: var(--dark-bg);
    margin-bottom: 0.75rem;
    font-weight: 600;
}

.project-content p {
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 1rem;
    font-size: 0.95rem;
}

.project-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 1.25rem;
}

.project-tag {
    padding: 0.4rem 0.9rem;
    background-color: var(--very-light-green);
    color: var(--dark-green);
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 500;
    border: 1px solid var(--light-green);
}

.project-links {
    display: flex;
    gap: 1rem;
}

.project-link {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.6rem 1.2rem;
    background-color: transparent;
    color: var(--primary-green);
    text-decoration: none;
    border-radius: 6px;
    font-weight: 500;
    font-size: 0.9rem;
    border: 2px solid var(--primary-green);
    transition: all 0.3s ease;
}

.project-link:hover {
    background-color: var(--primary-green);
    color: var(--white);
    transform: translateY(-2px);
}

.project-link.disabled {
    background-color: #f3f4f6;
    color: #9ca3af;
    border-color: #d1d5db;
    cursor: not-allowed;
    pointer-events: none;
    opacity: 0.6;
}

.project-link.disabled:hover {
    background-color: #f3f4f6;
    color: #9ca3af;
    transform: none;
}

/* Timeline */
.timeline {
    position: relative;
    padding-left: 2rem;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 2px;
    background-color: var(--light-green);
}

.timeline-item {
    position: relative;
    margin-bottom: 3rem;
    padding-left: 2rem;
}

.timeline-item::before {
    content: '';
    position: absolute;
    left: -2.5rem;
    top: 0.5rem;
    width: 12px;
    height: 12px;
    background-color: var(--primary-green);
    border-radius: 50%;
    border: 3px solid var(--white);
    box-shadow: 0 0 0 2px var(--primary-green);
}

.timeline-date {
    font-size: 0.875rem;
    color: var(--primary-green);
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.timeline-content h3 {
    font-size: 1.25rem;
    color: var(--dark-bg);
    margin-bottom: 0.25rem;
    font-weight: 600;
}

.timeline-content h4 {
    font-size: 1rem;
    color: var(--text-secondary);
    margin-bottom: 0.75rem;
    font-weight: 500;
}

.timeline-content p {
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 1rem;
}

/* Experience Skills */
.experience-skills {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-top: 1rem;
}

.experience-skill {
    padding: 0.4rem 0.9rem;
    background-color: var(--very-light-green);
    color: var(--dark-green);
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 500;
    border: 1px solid var(--light-green);
    transition: all 0.2s ease;
}

.experience-skill:hover {
    background-color: var(--light-green);
    transform: translateY(-1px);
}

/* Skills Section */
.skills-category {
    margin-bottom: 3rem;
}

.skills-category:last-child {
    margin-bottom: 0;
}

.category-title {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--dark-bg);
    margin-bottom: 1.5rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding-bottom: 0.75rem;
    border-bottom: 2px solid var(--light-green);
}

.category-title svg {
    color: var(--primary-green);
    flex-shrink: 0;
}

.skills-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
}

.skill-tag {
    padding: 0.75rem 1.25rem;
    background-color: var(--very-light-green);
    color: var(--dark-green);
    border-radius: 50px;
    font-weight: 500;
    font-size: 0.95rem;
    border: 2px solid var(--light-green);
    transition: all 0.3s ease;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.skill-tag svg {
    flex-shrink: 0;
    opacity: 0.8;
}

.skill-tag:hover {
    background-color: var(--light-green);
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(16, 185, 129, 0.2);
}

.skill-tag:hover svg {
    opacity: 1;
}

/* Footer */
footer {
    text-align: center;
    padding: 3rem 0;
    color: var(--text-secondary);
    border-top: 1px solid var(--border-color);
    margin-top: 4rem;
}

/* Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Responsive Design */
@media (max-width: 768px) {
    .hero {
        min-height: 80vh;
    }

    section {
        padding: 3rem 0;
    }

    .timeline {
        padding-left: 1.5rem;
    }

    .timeline-item {
        padding-left: 1.5rem;
    }

    .timeline-item::before {
        left: -2rem;
    }

    h2 {
        margin-bottom: 2rem;
    }

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

    .language-switcher {
        top: 1rem;
        right: 1rem;
    }

    .category-title {
        font-size: 1.25rem;
    }

    .skills-category {
        margin-bottom: 2.5rem;
    }
}

@media (max-width: 480px) {
    .social-links {
        flex-direction: column;
        align-items: stretch;
    }

    .social-btn {
        justify-content: center;
    }

    .project-links {
        flex-direction: column;
    }

    .project-link {
        justify-content: center;
    }

    .category-title {
        font-size: 1.1rem;
        flex-wrap: wrap;
    }

    .skill-tag {
        font-size: 0.85rem;
        padding: 0.6rem 1rem;
    }
}