/* --- Global Styling --- */
:root {
    --primary-color: #00ffc4; /* Vibrant green accent */
    --secondary-color: #121212; /* Dark background */
    --card-color: #1e1e1e; /* Slightly lighter dark for cards */
    --text-color: #f0f0f0; /* Light text for readability */
    --text-muted: #a0a0a0; /* Muted text for descriptions */
}

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

body {
    font-family: 'Poppins', sans-serif;
    line-height: 1.6;
    background-color: var(--secondary-color);
    color: var(--text-color);
    scroll-behavior: smooth;
}

/* --- Header & Navigation --- */
.header {
    background-color: var(--secondary-color);
    padding: 1.5rem 2rem;
    box-shadow: 0 4px 15px rgba(0,0,0,0.2);
    position: sticky;
    top: 0;
    z-index: 1000;
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1100px;
    margin: 0 auto;
}

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

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

.nav-links li a {
    text-decoration: none;
    color: var(--text-color);
    margin-left: 2.5rem;
    font-weight: 600;
    transition: color 0.3s ease;
}

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

/* --- Hero Section --- */
.hero-section {
    display: flex;
    justify-content: center;
    align-items: center;
    max-width: 1100px;
    margin: 6rem auto;
    padding: 2rem;
    gap: 4rem;
}

.hero-content {
    flex: 1;
}

.intro-greeting {
    font-size: 1.8rem;
    color: var(--primary-color);
}

.intro-headline {
    font-size: 4rem;
    margin: 0.5rem 0 1rem;
    color: var(--text-color);
    line-height: 1.2;
}

.intro-text {
    font-size: 1.1rem;
    max-width: 600px;
    color: var(--text-muted);
}

.cta-button {
    display: inline-block;
    background-color: var(--primary-color);
    color: var(--secondary-color);
    padding: 0.85rem 2.5rem;
    text-decoration: none;
    border-radius: 50px;
    margin-top: 2rem;
    font-weight: 700;
    transition: transform 0.3s ease;
}

.cta-button:hover {
    transform: scale(1.05);
}

.hero-image {
    flex: 1;
    text-align: center;
}

.hero-image img {
    max-width: 100%;
    height: auto;
    border-radius: 50%;
    box-shadow: 0 4px 20px rgba(0,0,0,0.4);
    transition: transform 0.3s ease;
}

.hero-image img:hover {
    transform: translateY(-10px);
}

/* --- General Section Styling --- */
section {
    max-width: 1100px;
    margin: 6rem auto;
    padding: 2rem;
}

.section-title {
    font-size: 3rem;
    color: var(--text-color);
    margin-bottom: 4rem;
    text-align: center;
    position: relative;
}

/* Underline effect for section titles */
.section-title::after {
    content: '';
    display: block;
    width: 60px;
    height: 4px;
    background-color: var(--primary-color);
    margin: 1rem auto 0;
}

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

.skill-card {
    background-color: var(--card-color);
    padding: 2rem;
    border-radius: 8px;
    box-shadow: 0 4px 10px rgba(0,0,0,0.2);
    text-align: left;
    transition: transform 0.3s ease;
}

.skill-card:hover {
    transform: translateY(-10px);
}

.skill-name {
    font-size: 1.4rem;
    margin-bottom: 0.75rem;
    color: var(--primary-color);
}

.skill-bar {
    background-color: #333;
    height: 12px;
    border-radius: 6px;
    overflow: hidden;
}

.skill-level {
    height: 100%;
    background-color: var(--primary-color);
    border-radius: 6px;
    width: 0;
    transition: width 2s ease-out;
}

.skill-level.java { width: 90%; }
.skill-level.html-css { width: 70%; }
.skill-level.javascript { width: 60%; }
.skill-level.python { width: 80%; }
.skill-level.mysql { width: 80%; }

@keyframes fillBar {
    from { width: 0; }
    to { width: var(--initial-width); }
}

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

.project-card {
    background-color: var(--card-color);
    padding: 2rem;
    border-radius: 8px;
    box-shadow: 0 4px 10px rgba(0,0,0,0.2);
    transition: transform 0.3s ease;
}

.project-card:hover {
    transform: translateY(-10px);
}

.project-card h3 {
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.project-card p {
    color: var(--text-muted);
}

.project-link {
    display: inline-block;
    color: var(--primary-color);
    text-decoration: none;
    margin-top: 1rem;
    font-weight: 600;
    transition: color 0.3s ease;
}

.project-link:hover {
    text-decoration: underline;
}

/* --- Contact Section --- */
.contact-section {
    text-align: center;
}

.contact-section p {
    margin-bottom: 2rem;
    color: var(--text-muted);
}

.contact-links {
    display: flex;
    justify-content: center;
    gap: 1.5rem;
}

.contact-button {
    background-color: var(--card-color);
    color: var(--text-color);
    padding: 0.75rem 2rem;
    text-decoration: none;
    border-radius: 50px;
    transition: transform 0.3s ease;
}

.contact-button:hover {
    transform: translateY(-5px);
    background-color: #333;
}

/* --- Footer --- */
.footer {
    text-align: center;
    padding: 2rem;
    background-color: var(--card-color);
    color: var(--text-muted);
    margin-top: 6rem;
}

/* --- Responsive Design --- */
@media (max-width: 768px) {
    .hero-section {
        flex-direction: column;
        text-align: center;
        margin: 4rem auto;
    }
    .hero-image {
        margin-top: 2rem;
    }
    .hero-content {
        order: 2;
    }
    .hero-image {
        order: 1;
    }
    .nav-links {
        display: none;
    }
    nav {
        flex-direction: column;
    }
}