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

:root {
    /* Colors */
    --primary: hsl(240, 100%, 70%); /* Blue for accents */
    --primary-dark: hsl(240, 100%, 60%); /* Darker blue for hover */
    --secondary: hsl(0, 0%, 10%); /* Dark gray for secondary backgrounds */
    --accent: hsl(0, 0%, 20%); /* Mid gray for cards and tags */
    --background: hsl(0, 0%, 0%); /* Black background */
    --surface: hsl(0, 0%, 15%); /* Dark gray for sections */
    --text: hsl(0, 0%, 95%); /* White text */
    --text-muted: hsl(0, 0%, 70%); /* Light gray for muted text */
    --border: hsl(0, 0%, 30%); /* Gray border */
    
    /* Gradients */
    --gradient-primary: linear-gradient(135deg, hsl(240, 100%, 70%), hsl(280, 100%, 70%)); /* Blue to purple gradient */
    --gradient-bg: linear-gradient(135deg, hsl(0, 0%, 0%), hsl(0, 0%, 10%)); /* Subtle black to dark gray */
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(255, 255, 255, 0.05);
    --shadow: 0 1px 3px 0 rgba(255, 255, 255, 0.1), 0 1px 2px -1px rgba(255, 255, 255, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(255, 255, 255, 0.1), 0 4px 6px -4px rgba(255, 255, 255, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(255, 255, 255, 0.1), 0 8px 10px -6px rgba(255, 255, 255, 0.1);
    
    /* Transitions */
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    line-height: 1.6;
    color: var(--text);
    background: var(--background);
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1rem;
}

/* Typography */
.gradient-text {
    background: var(--gradient-primary);
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-size: 200% 200%;
    animation: gradient-shift 3s ease-in-out infinite;
}

@keyframes gradient-shift {
    0%, 100% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: 3rem;
}

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: var(--background); /* Solid black navbar */
    backdrop-filter: blur(10px);
    border-bottom: 2px solid var(--border); /* Gray line for separation */
    z-index: 1000;
    transition: var(--transition);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 4rem;
}

.nav-socials {
    display: flex;
    gap: 1rem;
    align-items: center;
}

.social-link {
    font-size: 1.5rem;
    color: var(--text); /* White for visibility */
    text-decoration: none;
    transition: var(--transition);
    position: relative;
}

.social-link:hover {
    color: var(--primary); /* Blue on hover */
}

.social-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-primary);
    transition: var(--transition);
}

.social-link:hover::after {
    width: 100%;
}

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

.nav-link {
    text-decoration: none;
    color: var(--text); /* White for visibility */
    font-weight: 500;
    transition: var(--transition);
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-primary);
    transition: var(--transition);
}

.nav-link:hover,
.nav-link.active {
    color: var(--primary); /* Blue on hover/active */
}

.nav-link:hover::after,
.nav-link.active::after {
    width: 100%;
}

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

.hamburger span {
    width: 25px;
    height: 3px;
    background: var(--text); /* White for visibility */
    margin: 3px 0;
    transition: var(--transition);
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    background: var(--gradient-bg);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at 30% 20%, rgba(255, 255, 255, 0.05) 0%, transparent 50%),
                radial-gradient(circle at 80% 80%, rgba(255, 255, 255, 0.05) 0%, transparent 50%);
    pointer-events: none;
}

.hero-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1rem;
    position: relative;
    z-index: 1;
}

.hero-content {
    max-width: 700px;
    text-align: center;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.hero-photo {
    width: 200px;
    height: 200px;
    border-radius: 50%;
    object-fit: cover;
    margin-bottom: 1.5rem;
    box-shadow: var(--shadow);
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    line-height: 1.2;
}

.hero-subtitle {
    font-size: 1.5rem;
    color: var(--text-muted);
    margin-bottom: 1.5rem;
    font-weight: 500;
}

.hero-description {
    font-size: 1.125rem;
    color: var(--text-muted);
    margin-bottom: 2rem;
    line-height: 1.7;
}

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

/* Buttons */
.btn {
    padding: 0.75rem 1.5rem;
    border-radius: 0.5rem;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-weight: 500;
    transition: var(--transition);
    border: none;
    cursor: pointer;
    font-size: 1rem;
}

.btn-primary {
    background: var(--gradient-primary);
    color: white;
    box-shadow: var(--shadow);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-outline {
    background: transparent;
    color: var(--primary);
    border: 2px solid var(--primary);
}

.btn-outline:hover {
    background: var(--primary);
    color: white;
    transform: translateY(-2px);
}

.btn-sm {
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
}

/* About Section */
.about {
    padding: 5rem 0;
    background: var(--surface);
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: start;
}

.about-text p {
    font-size: 1.125rem;
    color: var(--text-muted);
    margin-bottom: 2rem;
    line-height: 1.7;
}

.stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    margin-top: 2rem;
}

.stat {
    text-align: center;
}

.stat h3 {
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 0.5rem;
}

.stat p {
    color: var(--text-muted);
    font-size: 0.875rem;
}

.skills h3 {
    font-size: 1.5rem;
    margin-bottom: 1.5rem;
    color: var(--text);
}

.skills-grid {
    display: grid;
    gap: 2rem;
}

.skill-category h4 {
    font-size: 1rem;
    margin-bottom: 0.75rem;
    color: var(--text);
}

.skill-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.skill-tag {
    background: var(--accent);
    color: var(--text);
    padding: 0.25rem 0.75rem;
    border-radius: 1rem;
    font-size: 0.875rem;
    border: 1px solid var(--border);
    transition: var(--transition);
}

.skill-tag:hover {
    background: var(--primary);
    color: white;
    transform: translateY(-1px);
}

/* Experience Section */
.experience {
    padding: 5rem 0;
    background: var(--background);
}

.experience-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
}

.experience-card {
    background: var(--accent);
    border-radius: 1rem;
    padding: 1.5rem;
    box-shadow: var(--shadow);
    transition: var(--transition);
    border: 1px solid var(--border);
    display: flex;
    flex-direction: column;
}

.experience-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
}

.experience-content {
    flex-grow: 1;
}

.experience-card h3 {
    font-size: 1.25rem;
    margin-bottom: 0.5rem;
    color: var(--text);
}

.experience-card h4 {
    font-size: 1rem;
    color: var(--text-muted);
    margin-bottom: 0.5rem;
}

.experience-card .duration {
    font-size: 0.875rem;
    color: var(--text-muted);
    margin-bottom: 1rem;
}

.experience-card ul {
    list-style-type: disc;
    padding-left: 1.5rem;
    margin-bottom: 1rem;
    flex-grow: 1;
}

.experience-card li {
    font-size: 0.875rem;
    color: var(--text-muted);
    margin-bottom: 0.5rem;
}

.experience-links {
    display: flex;
    gap: 0.75rem;
    margin-top: 1rem;
    align-self: flex-start;
}

/* Projects Section */
.projects {
    padding: 5rem 0;
    background: var(--surface);
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
}

.project-card {
    background: var(--accent);
    border-radius: 1rem;
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
    border: 1px solid var(--border);
    display: flex;
    flex-direction: column;
}

.project-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-xl);
}

.project-image {
    background: var(--gradient-primary);
    height: 200px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 3rem;
}

.project-content {
    padding: 1.5rem;
    flex-grow: 1;
    display: flex;
    flex-direction: column;
}

.project-details {
    flex-grow: 1;
}

.project-content h3 {
    font-size: 1.25rem;
    margin-bottom: 0.75rem;
    color: var(--text);
}

.project-content p {
    color: var(--text-muted);
    margin-bottom: 1rem;
    line-height: 1.6;
}

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

.tech-tag {
    background: var(--secondary);
    color: var(--text);
    padding: 0.25rem 0.75rem;
    border-radius: 1rem;
    font-size: 0.75rem;
    border: 1px solid var(--border);
}

.project-links {
    display: flex;
    gap: 0.75rem;
    margin-top: 1rem;
    align-self: flex-start;
}

/* Contact Section */
.contact {
    padding: 5rem 0;
    background: var(--background);
}

.contact-description {
    text-align: center;
    font-size: 1.125rem;
    color: var(--text-muted);
    margin-bottom: 3rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

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

.contact-card {
    background: var(--accent);
    padding: 2rem;
    border-radius: 1rem;
    text-align: center;
    box-shadow: var(--shadow);
    transition: var(--transition);
    border: 1px solid var(--border);
}

.contact-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.contact-icon {
    width: 3rem;
    height: 3rem;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1rem;
    color: var(--primary);
    font-size: 1.25rem;
}

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

.contact-card a {
    color: var(--text-muted);
    text-decoration: none;
    transition: var(--transition);
}

.contact-card a:hover {
    color: var(--primary);
}

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

/* Chatbot */
.chatbot-container {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 350px;
    height: 500px;
    background: var(--accent);
    border-radius: 1rem;
    box-shadow: var(--shadow-xl);
    border: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    z-index: 1000;
    transition: height 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.chatbot-container.minimized {
    height: 60px;
    overflow: hidden;
}

.chatbot-container.minimized .chatbot-messages,
.chatbot-container.minimized .chatbot-input {
    display: none;
}

.chatbot-container.minimized .chatbot-header {
    cursor: pointer;
}

.chatbot-header {
    background: var(--gradient-primary);
    color: white;
    padding: 1rem;
    border-radius: 1rem 1rem 0 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
}

.close-btn {
    background: none;
    border: none;
    color: white;
    font-size: 1.25rem;
    cursor: pointer;
    padding: 0;
    width: 2rem;
    height: 2rem;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    transition: var(--transition);
}

.close-btn:hover {
    background: rgba(255, 255, 255, 0.2);
}

.chatbot-messages {
    flex: 1;
    padding: 1rem;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    background: var(--secondary);
}

.message {
    display: block;
    width: 100%;
    max-width: 100%;
    margin-bottom: 0.75rem;
}

.bot-message {
    background: var(--primary);
    color: white;
    padding: 0.75rem;
    border-radius: 1rem;
    border-bottom-left-radius: 0.25rem;
    font-size: 0.875rem;
    line-height: 1.5;
}

.user-message {
    background: var(--accent);
    color: var(--text);
    padding: 0.75rem;
    border-radius: 1rem;
    border-bottom-right-radius: 0.25rem;
    font-size: 0.875rem;
    line-height: 1.5;
    align-self: flex-end;
}

/* Styling for HTML content in bot messages */
.bot-message p,
.bot-message ul,
.bot-message strong {
    margin: 0.5rem 0;
    width: 100%;
}

.bot-message ul {
    padding-left: 1.5rem;
    list-style-type: disc;
}

.bot-message li {
    margin-bottom: 0.25rem;
}

.bot-message strong {
    font-weight: 700;
}

.chatbot-input {
    padding: 1rem;
    border-top: 1px solid var(--border);
    display: flex;
    gap: 0.5rem;
    background: var(--accent);
}

.chatbot-input input {
    flex: 1;
    padding: 0.75rem;
    border: 1px solid var(--border);
    border-radius: 0.5rem;
    outline: none;
    font-size: 0.875rem;
    background: var(--secondary);
    color: var(--text);
}

.chatbot-input input:focus {
    border-color: var(--primary);
}

.send-btn {
    background: var(--primary);
    color: white;
    border: none;
    padding: 0.75rem;
    border-radius: 0.5rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

.send-btn:hover {
    background: var(--primary-dark);
}

/* Responsive Design */
@media (max-width: 768px) {
    .hamburger {
        display: flex;
    }
    
    .nav-menu {
        position: fixed;
        top: 4rem;
        left: -100%;
        width: 100%;
        height: calc(100vh - 4rem);
        background: var(--background);
        flex-direction: column;
        align-items: center;
        justify-content: flex-start;
        padding-top: 2rem;
        transition: var(--transition);
        border-top: 1px solid var(--border);
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .about-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .stats {
        grid-template-columns: repeat(3, 1fr);
        gap: 1rem;
    }
    
    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .contact-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .chatbot-container {
        width: calc(100vw - 2rem);
        right: 1rem;
        left: 1rem;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 2rem;
    }
    
    .stats {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .experience-grid {
        grid-template-columns: 1fr;
    }
    
    .projects-grid {
        grid-template-columns: 1fr;
    }
    
    .contact-grid {
        grid-template-columns: 1fr;
    }
}