:root {
    --bg-color: #121212;
    --primary-color: #00aaff;
    --secondary-color: #0077b3;
    --card-color: #1e1e1e;
    --text-color: #e0e0e0;
    --text-muted-color: #a0a0a0;
    --border-color: #2c2c2c;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Poppins', 'Arial', sans-serif;
    line-height: 1.8;
    background-color: var(--bg-color);
    color: var(--text-color);
}

.container {
    max-width: 960px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Navigation Bar */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    padding: 15px 0;
    z-index: 1000;
    transition: background-color 0.3s ease;
    background: rgba(30, 30, 30, 0.7);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
}

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

.nav-logo {
    font-weight: 700;
    font-size: 1.5em;
    color: var(--text-color);
    text-decoration: none;
}

.nav-logo span {
    color: var(--primary-color);
}

.nav-links {
    list-style: none;
    display: flex;
    gap: 25px;
}

.nav-links a {
    color: var(--text-muted-color);
    text-decoration: none;
    font-weight: 600;
    transition: color 0.3s ease;
}

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

/* Header / Hero Section */
header {
    min-height: 100vh;
    display: flex;
    align-items: center;
    text-align: center;
    padding-top: 80px; /* Offset for navbar */
}

.header-content {
    max-width: 700px;
    margin: 0 auto;
}

.profile-pic {
    width: 150px;
    height: 150px;
    border-radius: 50%;
    border: 4px solid var(--primary-color);
    margin: 0 auto 20px;
    display: block;
    object-fit: cover;
    box-shadow: 0 0 25px rgba(0, 170, 255, 0.4);
}

h1 {
    font-size: 3em;
    margin-bottom: 10px;
    color: white;
}

h1 span {
     background: linear-gradient(90deg, var(--primary-color), #00eaff);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.tagline {
    color: var(--text-muted-color);
    font-size: 1.2em;
    font-weight: 300;
}

/* General Section Styling */
section {
    padding: 80px 0;
    border-bottom: 1px solid var(--border-color);
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

section.visible {
    opacity: 1;
    transform: translateY(0);
}

h2 {
    text-align: center;
    font-size: 2.5em;
    margin-bottom: 50px;
    color: var(--primary-color);
}

/* About Section */
#about p {
    max-width: 700px;
    margin: 0 auto;
    text-align: center;
    font-size: 1.1em;
}

/* Skills Section */
.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.skill-category {
    background-color: var(--card-color);
    padding: 25px;
    border-radius: 10px;
    border: 1px solid var(--border-color);
}

.skill-category h3 {
    color: var(--text-color);
    border-bottom: 2px solid var(--primary-color);
    padding-bottom: 10px;
    margin-bottom: 20px;
}

.tech-icons {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
}

.tech-icon {
    display: flex;
    align-items: center;
    gap: 10px;
    background-color: var(--bg-color);
    padding: 10px 15px;
    border-radius: 8px;
    transition: transform 0.3s, box-shadow 0.3s;
}

.tech-icon:hover {
    transform: translateY(-5px);
    box-shadow: 0 5px 15px rgba(0, 170, 255, 0.2);
}

.tech-icon img {
    filter: grayscale(100%) brightness(150%);
    transition: filter 0.3s;
}

.tech-icon:hover img {
    filter: grayscale(0%) brightness(100%);
}

.tech-icon span {
    font-weight: 600;
}

/* Projects Section */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.project-card {
    background-color: var(--card-color);
    border-radius: 10px;
    overflow: hidden;
    border: 1px solid var(--border-color);
    transition: transform 0.3s, box-shadow 0.3s;
}

.project-card:hover {
     transform: translateY(-10px);
     box-shadow: 0 10px 20px rgba(0, 0, 0, 0.4);
}

.project-card-content {
    padding: 25px;
}

.project-card h3 {
    color: var(--primary-color);
    margin-bottom: 10px;
}

.project-card p {
    color: var(--text-muted-color);
    margin-bottom: 20px;
}

.project-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.tag {
    background-color: rgba(0, 170, 255, 0.1);
    color: var(--primary-color);
    padding: 5px 12px;
    border-radius: 20px;
    font-size: 0.8em;
    font-weight: 600;
}

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

#contact p {
    margin-bottom: 30px;
    font-size: 1.1em;
}

.social-links {
    display: flex;
    justify-content: center;
    gap: 30px;
}

.social-links a {
    color: var(--text-muted-color);
    text-decoration: none;
    font-size: 1.5em;
    display: flex;
    align-items: center;
    gap: 10px;
    transition: color 0.3s, transform 0.3s;
}

.social-links a:hover {
    color: var(--primary-color);
    transform: scale(1.1);
}

/* Footer */
footer {
    text-align: center;
    padding: 30px 0;
    background-color: var(--card-color);
    border-top: 1px solid var(--border-color);
}

footer p {
    color: var(--text-muted-color);
    font-size: 0.9em;
}