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

:root {
    --primary-color: #2563eb;
    --secondary-color: #1e40af;
    --accent-color: #3b82f6;
    --text-dark: #1f2937;
    --text-light: #6b7280;
    --bg-light: #f9fafb;
    --bg-white: #ffffff;
    --border-color: #e5e7eb;
    --success-color: #10b981;
    --gradient-start: #3b82f6;
    --gradient-end: #2563eb;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell', 'Fira Sans', 'Droid Sans', 'Helvetica Neue', sans-serif;
    line-height: 1.6;
    color: var(--text-dark);
    background-color: var(--bg-white);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header and Navigation */
header {
    background-color: var(--bg-white);
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    position: sticky;
    top: 0;
    z-index: 1000;
}

nav {
    padding: 1rem 0;
}

nav .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo h1 {
    font-size: 1.5rem;
    color: var(--primary-color);
    font-weight: 700;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-links a {
    text-decoration: none;
    color: var(--text-dark);
    font-weight: 500;
    transition: color 0.3s ease;
}

.nav-links a:hover {
    color: var(--primary-color);
}

/* Hero Section */
.hero {
    background: linear-gradient(135deg, var(--gradient-start) 0%, var(--gradient-end) 100%);
    color: white;
    padding: 6rem 0;
    text-align: center;
}

.hero-content h2 {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.hero-content p {
    font-size: 1.25rem;
    margin-bottom: 2rem;
    opacity: 0.95;
}

.cta-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 0.875rem 2rem;
    border-radius: 0.5rem;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
    cursor: pointer;
}

.btn-primary {
    background-color: var(--bg-white);
    color: var(--primary-color);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0,0,0,0.15);
}

.btn-secondary {
    background-color: transparent;
    color: var(--bg-white);
    border: 2px solid var(--bg-white);
}

.btn-secondary:hover {
    background-color: var(--bg-white);
    color: var(--primary-color);
}

/* Sections */
section {
    padding: 4rem 0;
}

section h2 {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 1rem;
    text-align: center;
    color: var(--text-dark);
}

.section-intro {
    text-align: center;
    color: var(--text-light);
    font-size: 1.125rem;
    margin-bottom: 2rem;
}

/* About Section */
.about {
    background-color: var(--bg-light);
}

.about-content {
    max-width: 900px;
    margin: 2rem auto 0;
    display: flex;
    gap: 3rem;
    align-items: center;
}

.about-image {
    flex-shrink: 0;
}

.about-image img {
    width: 200px;
    height: 200px;
    border-radius: 50%;
    object-fit: cover;
    border: 4px solid var(--primary-color);
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
}

.about-text {
    flex: 1;
}

.about-text p {
    font-size: 1.125rem;
    line-height: 1.8;
    color: var(--text-light);
    margin-bottom: 1rem;
}

/* SAVVA Section */
.savva {
    background-color: var(--bg-white);
}

.savva-hero {
    text-align: center;
    margin-bottom: 3rem;
}

.savva-intro h3 {
    font-size: 1.75rem;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.savva-tagline {
    font-size: 1.25rem;
    color: var(--text-light);
    font-style: italic;
    margin-bottom: 1rem;
}

.savva-intro p {
    font-size: 1.125rem;
    color: var(--text-light);
    max-width: 700px;
    margin: 0 auto;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 3rem;
}

.feature-card {
    background-color: var(--bg-light);
    padding: 2rem;
    border-radius: 0.75rem;
    text-align: center;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0,0,0,0.1);
}

.feature-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.feature-card h4 {
    font-size: 1.25rem;
    color: var(--text-dark);
    margin-bottom: 0.5rem;
}

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

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

.savva-links .btn-primary {
    background-color: var(--primary-color);
    color: white;
}

.savva-links .btn-primary:hover {
    background-color: var(--secondary-color);
}

.savva-links .btn-secondary {
    border: 2px solid var(--primary-color);
    color: var(--primary-color);
}

.savva-links .btn-secondary:hover {
    background-color: var(--primary-color);
    color: white;
}

/* Projects Section */
.projects {
    background-color: var(--bg-light);
}

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

.project-card {
    background-color: var(--bg-white);
    padding: 2rem;
    border-radius: 0.75rem;
    border: 1px solid var(--border-color);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.project-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0,0,0,0.1);
}

.project-card h4 {
    font-size: 1.5rem;
    color: var(--primary-color);
    margin-bottom: 0.75rem;
}

.project-card p {
    color: var(--text-light);
    margin-bottom: 1rem;
    flex-grow: 1;
}

.tech-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.project-link {
    display: inline-block;
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 600;
    font-size: 0.95rem;
    margin-top: 0.5rem;
    transition: color 0.3s ease;
}

.project-link:hover {
    color: var(--secondary-color);
    text-decoration: underline;
}

.tag {
    background-color: var(--bg-light);
    color: var(--text-dark);
    padding: 0.25rem 0.75rem;
    border-radius: 1rem;
    font-size: 0.875rem;
    font-weight: 500;
}

.github-link {
    text-align: center;
    margin-top: 2rem;
}

.github-link p {
    font-size: 1.125rem;
    color: var(--text-light);
}

.github-link a {
    color: var(--primary-color);
    font-weight: 600;
    text-decoration: none;
}

.github-link a:hover {
    text-decoration: underline;
}

/* Contact Section */
.contact {
    background-color: var(--bg-white);
}

.contact-content {
    max-width: 700px;
    margin: 2rem auto 0;
    text-align: center;
}

.contact-content > p {
    font-size: 1.125rem;
    color: var(--text-light);
    margin-bottom: 2rem;
}

.contact-methods {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
    text-align: left;
}

.contact-item {
    background-color: var(--bg-light);
    padding: 1.5rem;
    border-radius: 0.5rem;
}

.contact-item strong {
    display: block;
    color: var(--text-dark);
    margin-bottom: 0.5rem;
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.contact-item a {
    color: var(--primary-color);
    text-decoration: none;
    font-size: 1rem;
}

.contact-item a:hover {
    text-decoration: underline;
}

/* Footer */
footer {
    background-color: var(--text-dark);
    color: white;
    padding: 2rem 0;
    text-align: center;
}

footer p {
    margin: 0.5rem 0;
    opacity: 0.9;
}

/* Responsive Design */
@media (max-width: 768px) {
    .nav-links {
        gap: 1rem;
    }

    .hero-content h2 {
        font-size: 2rem;
    }

    .hero-content p {
        font-size: 1rem;
    }

    section h2 {
        font-size: 1.75rem;
    }

    .about-content {
        flex-direction: column;
        text-align: center;
        gap: 2rem;
    }

    .about-image img {
        width: 150px;
        height: 150px;
    }

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

    .contact-methods {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .logo h1 {
        font-size: 1.25rem;
    }

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

    .hero {
        padding: 3rem 0;
    }

    .cta-buttons {
        flex-direction: column;
    }

    .btn {
        width: 100%;
    }
}