body {
    font-family: 'Segoe UI', sans-serif;
    background-color: #f4f4f4;
    margin: 0;
    padding: 2rem;
    color: #333;
}

/* Navigator */
nav {
    position: sticky;
    top: 0;
    background: white;
    box-shadow: 0 2px 6px rgba(0,0,0,0.05);
    z-index: 1000;
}
.nav-inner {
    max-width: 1000px;
    margin: auto;
    padding: 1rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.logo {
    font-weight: bold;
    font-size: 1.2rem;
}
.nav-links {
    list-style: none;
    display: flex;
    gap: 1rem;
}
.nav-links li a {
    color: #333;
    text-decoration: none;
    font-weight: 500;
}
.nav-links li a:hover {
    color: #007acc;
}
a {
    color: #007acc;
    text-decoration: none;
}
a:hover {
    text-decoration: underline;
}

/* Introduction */
.intro {
    display: flex;
    justify-content: center;
    align-items: center;
    text-align: center;
    padding: 4rem 1rem;
    background: #f9fafb;
}
.intro h1 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}
.intro .highlight {
    color: #007acc;
}
.intro p {
    font-size: 1.2rem;
    color: #555;
    max-width: 600px;
    margin: 0 auto 1.5rem;
}
.intro-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
}
.btn {
    padding: 0.6rem 1.2rem;
    border-radius: 6px;
    font-weight: 600;
    text-decoration: none;
}
.btn.primary {
    background: #007acc;
    color: white;
}
.btn.primary:hover {
    background: #005fa3;
}
.btn.secondary {
    border: 2px solid #007acc;
    color: #007acc;
}
.btn.secondary:hover {
    background: #007acc;
    color: white;
}

/* Sections */
section {
    max-width: 800px;
    margin: auto;
    background: white;
    padding: 2rem;
    border-radius: 8px;
    box-shadow: 0 0 10px rgba(0,0,0,0.1);
    margin-bottom: 2rem;
}

/* Projects */
#projects {
    max-width: 1000px;
    margin: 3rem auto;
    padding: 0 1rem;
}
#projects h2 {
    text-align: center;
    margin-bottom: 2rem;
}
.project-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
}
.project-card {
    background: white;
    border-radius: 8px;
    padding: 1rem;
    box-shadow: 0 4px 10px rgba(0,0,0,0.05);
    transition: transform 0.2s;
}
.project-card:hover {
    transform: translateY(-5px);
}
.project-img {
    width: 100%;
    height: 160px;
    object-fit: cover;
    border-radius: 6px;
    margin-bottom: 1rem;
}
.project-img.placeholder {
    background: #e5e7eb;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    color: #555;
}