/* Reset and base styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Roboto', sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f4f4f4;
}

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

/* Header and Nav */
header {
    background: #fff;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 100;
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 2rem;
}

.logo {
    font-size: 1.5rem;
    font-weight: bold;
    flex: 1;
    text-align: center; /* Centers the logo text in the nav */
}

.nav-links {
    list-style: none;
    display: flex;
    flex: 1;
    justify-content: flex-end; /* Pushes nav links to the right */
}

.nav-links li {
    margin-left: 2rem;
}

.nav-links a {
    text-decoration: none;
    color: #333;
    transition: color 0.3s;
}

.nav-links a:hover {
    color: #007bff;
}

.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
}

.hamburger span {
    width: 25px;
    height: 3px;
    background: #333;
    margin: 3px 0;
}

/* Hero Section */
#hero {
    display: flex;
    justify-content: center; /* Centers content horizontally */
    align-items: center; /* Centers content vertically */
    padding: 100px 20px 50px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    min-height: 50vh; /* Ensures enough height for vertical centering */
}

.hero-content {
    text-align: center; /* Centers text within the content */
}

.hero-content h1 {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.hero-content p {
    font-size: 1.2rem;
    margin-bottom: 2rem;
}

.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    background: #007bff;
    color: white;
    text-decoration: none;
    border-radius: 5px;
    transition: background 0.3s;
}

.btn:hover {
    background: #0056b3;
}

/* (No hero-image styles needed since images are removed) */

/* Sections */
section {
    padding: 50px 0;
}

h2 {
    text-align: center;
    margin-bottom: 2rem;
    font-size: 2rem;
}

/* Skills */
.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.skill-item {
    background: white;
    padding: 1.5rem;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

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

.project {
    background: white;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    transition: transform 0.3s;
}

.project:hover {
    transform: translateY(-5px);
}

/* (No img styles needed since images are removed) */

.project h3 {
    padding: 1rem;
}

.project p {
    padding: 0 1rem;
}

.project .btn {
    margin: 1rem;
}

/* Contact */
form {
    max-width: 600px;
    margin: 0 auto;
}

input, textarea {
    width: 100%;
    padding: 0.75rem;
    margin-bottom: 1rem;
    border: 1px solid #ddd;
    border-radius: 5px;
}

textarea {
    height: 150px;
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0,0,0,0);
    white-space: nowrap;
    border: 0;
}

.error {
    color: red;
    font-size: 0.9rem;
}

/* Footer */
footer {
    text-align: center;
    padding: 1rem;
    background: #333;
    color: white;
}

/* Mobile Styles */
@media (max-width: 768px) {
    .nav-links {
        position: absolute;
        right: 0;
        top: 100%;
        background: white;
        width: 100%;
        flex-direction: column;
        align-items: center;
        transform: translateX(100%);
        transition: transform 0.3s;
    }

    .nav-links.active {
        transform: translateX(0);
    }

    .hamburger {
        display: flex;
    }

    #hero {
        flex-direction: column;
        text-align: center;
    }

    /* (No hero-image img styles needed) */
}