/* Base Styles & Variables */
:root {
    /* Dark Theme Colors (VSCode/Nord Inspired) */
    --bg-primary: #0f0f0f;
    --bg-secondary: #1a1a1a;
    --bg-tertiary: #252525;
    --text-primary: #e0e0e0;
    --text-secondary: #b0b0b0;
    --accent-blue: #5e81ac;
    --accent-cyan: #88c0d0;
    --accent-purple: #b48ead;
    --accent-green: #a3be8c;
    --accent-red: #bf616a;
    --accent-orange: #d08770;
    --accent-yellow: #ebcb8b;
    --border-radius: 8px;
    --box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    --transition: all 0.3s ease;
    --max-width: 1200px;
}

[data-theme="light"] {
    --bg-primary: #f8f8f8;
    --bg-secondary: #ffffff;
    --bg-tertiary: #f0f0f0;
    --text-primary: #333333;
    --text-secondary: #666666;
    --accent-blue: #3b82f6;
    --accent-cyan: #06b6d4;
    --accent-purple: #8b5cf6;
    --accent-green: #10b981;
    --accent-red: #ef4444;
    --accent-orange: #f97316;
    --accent-yellow: #f59e0b;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'JetBrains Mono', 'Fira Code', monospace;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

a {
    text-decoration: none;
    color: inherit;
}

ul {
    list-style: none;
}

img {
    max-width: 100%;
    height: auto;
}

.container {
    width: 100%;
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 1.5rem;
}

.section {
    padding: 5rem 0;
    position: relative;
}

.section-header {
    text-align: center;
    margin-bottom: 3rem;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    background: linear-gradient(90deg, var(--accent-blue), var(--accent-cyan));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    display: inline-block;
}

.section-divider {
    height: 4px;
    width: 80px;
    background: linear-gradient(90deg, var(--accent-blue), var(--accent-cyan));
    margin: 0 auto;
    border-radius: 2px;
}

.btn {
    display: inline-block;
    padding: 0.8rem 1.8rem;
    border-radius: var(--border-radius);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
    border: none;
    cursor: pointer;
    font-family: inherit;
}

.btn-primary {
    background-color: var(--accent-blue);
    color: white;
    box-shadow: 0 0 15px rgba(94, 129, 172, 0.5);
}

.btn-primary:hover {
    background-color: rgba(94, 129, 172, 0.9);
    box-shadow: 0 0 20px rgba(94, 129, 172, 0.8);
    transform: translateY(-2px);
}

.btn-secondary {
    background-color: transparent;
    color: var(--accent-cyan);
    border: 2px solid var(--accent-cyan);
    box-shadow: 0 0 15px rgba(136, 192, 208, 0.3);
}

.btn-secondary:hover {
    background-color: rgba(136, 192, 208, 0.1);
    box-shadow: 0 0 20px rgba(136, 192, 208, 0.5);
    transform: translateY(-2px);
}

.btn-resume {
    background-color: var(--accent-purple);
    color: white;
    box-shadow: 0 0 15px rgba(180, 142, 173, 0.5);
    margin-top: 2rem;
}

.btn-resume:hover {
    background-color: rgba(180, 142, 173, 0.9);
    box-shadow: 0 0 20px rgba(180, 142, 173, 0.8);
    transform: translateY(-2px);
}

.btn-submit {
    background-color: var(--accent-green);
    color: white;
    box-shadow: 0 0 15px rgba(163, 190, 140, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.btn-submit:hover {
    background-color: rgba(163, 190, 140, 0.9);
    box-shadow: 0 0 20px rgba(163, 190, 140, 0.8);
    transform: translateY(-2px);
}

/* Theme Toggle */
.theme-toggle {
    position: fixed;
    top: 1.5rem;
    right: 1.5rem;
    z-index: 1000;
}

.theme-switch {
    display: none;
}

.theme-label {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 60px;
    height: 30px;
    background: var(--bg-tertiary);
    border-radius: 50px;
    padding: 5px;
    position: relative;
    cursor: pointer;
    box-shadow: var(--box-shadow);
    transition: var(--transition);
}

.theme-label i {
    font-size: 0.9rem;
    z-index: 1;
}

.theme-label .fa-sun {
    color: var(--accent-yellow);
}

.theme-label .fa-moon {
    color: var(--accent-purple);
}

.theme-ball {
    position: absolute;
    width: 22px;
    height: 22px;
    background-color: var(--bg-secondary);
    border-radius: 50%;
    top: 4px;
    left: 4px;
    transition: transform 0.3s ease;
}

.theme-switch:checked + .theme-label .theme-ball {
    transform: translateX(30px);
}

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    padding: 1.5rem 0;
    background-color: rgba(15, 15, 15, 0.9);
    backdrop-filter: blur(10px);
    z-index: 999;
    transition: var(--transition);
}

.navbar.scrolled {
    padding: 1rem 0;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
}

.navbar-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 1.5rem;
}

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

.navbar-links ul {
    display: flex;
    gap: 2rem;
}

.navbar-links a {
    position: relative;
    font-weight: 500;
    transition: var(--transition);
}

.navbar-links a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--accent-blue);
    transition: var(--transition);
}

.navbar-links a:hover::after {
    width: 100%;
}

.navbar-toggler {
    display: none;
    background: none;
    border: none;
    color: var(--text-primary);
    font-size: 1.5rem;
    cursor: pointer;
}

/* Hero Section */
.hero {
    height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    position: relative;
    overflow: hidden;
    background: linear-gradient(135deg, var(--bg-primary), var(--bg-secondary));
}

.particles-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 800px;
    padding: 0 1.5rem;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    line-height: 1.2;
}

.hero-greeting {
    display: block;
    font-size: 1.5rem;
    color: var(--accent-cyan);
    margin-bottom: 0.5rem;
}

.hero-name {
    color: var(--accent-blue);
}

.typing-text {
    color: var(--accent-purple);
    border-right: 2px solid var(--accent-purple);
    animation: blink 0.7s infinite;
}

.hero-subtitle {
    font-size: 1.2rem;
    color: var(--text-secondary);
    margin-bottom: 2rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.hero-buttons {
    display: flex;
    gap: 1.5rem;
    justify-content: center;
    margin-top: 2rem;
}

.scroll-down {
    position: absolute;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    z-index: 2;
    animation: bounce 2s infinite;
}

.scroll-down span {
    display: block;
    width: 20px;
    height: 20px;
    border-bottom: 2px solid var(--accent-cyan);
    border-right: 2px solid var(--accent-cyan);
    transform: rotate(45deg);
    margin: -10px;
}

/* About Section */
.about-container {
    display: flex;
    justify-content: center;
    align-items: center;
}

.about-card {
    display: flex;
    background-color: var(--bg-secondary);
    border-radius: var(--border-radius);
    box-shadow: var(--box-shadow);
    overflow: hidden;
    max-width: 900px;
}

.about-image {
    position: relative;
    flex: 1;
    padding: 2rem;
    display: flex;
    justify-content: center;
    align-items: center;
}

.profile-img {
    width: 250px;
    height: 250px;
    border-radius: 50%;
    object-fit: cover;
    z-index: 1;
}

.glowing-border {
    position: absolute;
    width: 270px;
    height: 270px;
    border-radius: 50%;
    background: linear-gradient(45deg, var(--accent-blue), var(--accent-purple), var(--accent-cyan));
    animation: rotate 4s linear infinite;
    filter: blur(10px);
    opacity: 0.7;
}

.about-content {
    flex: 1;
    padding: 2rem;
}

.about-content h3 {
    font-size: 1.8rem;
    margin-bottom: 1.5rem;
    color: var(--accent-blue);
}

.about-content p {
    margin-bottom: 1rem;
    color: var(--text-secondary);
}

.about-social {
    display: flex;
    gap: 1rem;
    margin-top: 2rem;
}

.about-social a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background-color: var(--bg-tertiary);
    color: var(--text-primary);
    transition: var(--transition);
}

.about-social a:hover {
    background-color: var(--accent-blue);
    color: white;
    transform: translateY(-3px);
    box-shadow: 0 5px 15px rgba(94, 129, 172, 0.4);
}

/* Skills Section */
.skills-container {
    max-width: 1000px;
    margin: 0 auto;
}

.skills-tabs {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin-bottom: 2rem;
}

.skills-tab {
    padding: 0.5rem 1.5rem;
    border: none;
    background-color: var(--bg-tertiary);
    color: var(--text-primary);
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: var(--transition);
    font-family: inherit;
    font-weight: 500;
}

.skills-tab.active {
    background-color: var(--accent-blue);
    color: white;
}

.skills-tab:hover:not(.active) {
    background-color: rgba(94, 129, 172, 0.2);
}

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

.skills-category {
    display: none;
    grid-column: 1 / -1;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 2rem;
}

.skills-category.active {
    display: grid;
}

.skill-card {
    background-color: var(--bg-secondary);
    border-radius: var(--border-radius);
    padding: 1.5rem;
    text-align: center;
    box-shadow: var(--box-shadow);
    transition: var(--transition);
}

.skill-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.2);
}

.skill-progress {
    position: relative;
    width: 120px;
    height: 120px;
    margin: 0 auto 1.5rem;
}

.progress-circle {
    width: 100%;
    height: 100%;
    transform: rotate(-90deg);
}

.progress-circle-bg {
    fill: none;
    stroke: var(--bg-tertiary);
    stroke-width: 8;
}

.progress-circle-fill {
    fill: none;
    stroke: var(--accent-blue);
    stroke-width: 8;
    stroke-linecap: round;
    stroke-dasharray: 283;
    stroke-dashoffset: 283;
    transition: stroke-dashoffset 1s ease-out;
}

.skill-percent {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--accent-blue);
}

.skill-title {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--text-primary);
}

.resume-download {
    text-align: center;
    margin-top: 3rem;
}

/* Projects Section */
.projects-filter {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin-bottom: 2rem;
    flex-wrap: wrap;
}

.filter-btn {
    padding: 0.5rem 1.5rem;
    border: none;
    background-color: var(--bg-tertiary);
    color: var(--text-primary);
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: var(--transition);
    font-family: inherit;
}

.filter-btn.active {
    background-color: var(--accent-blue);
    color: white;
}

.filter-btn:hover:not(.active) {
    background-color: rgba(94, 129, 172, 0.2);
}

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

.project-card {
    background-color: var(--bg-secondary);
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--box-shadow);
    transition: var(--transition);
    position: relative;
}

.project-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.2);
}

.project-image {
    position: relative;
    height: 200px;
    overflow: hidden;
}

.project-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}

.project-card:hover .project-image img {
    transform: scale(1.1);
}

.project-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(15, 15, 15, 0.9);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    opacity: 0;
    transition: var(--transition);
    padding: 1.5rem;
    text-align: center;
}

.project-card:hover .project-overlay {
    opacity: 1;
}

.project-overlay h3 {
    color: var(--accent-cyan);
    margin-bottom: 0.5rem;
    font-size: 1.3rem;
}

.project-overlay p {
    color: var(--text-secondary);
    margin-bottom: 1rem;
    font-size: 0.9rem;
}

.project-links {
    display: flex;
    gap: 1rem;
}

.project-links a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background-color: var(--bg-tertiary);
    color: var(--text-primary);
    transition: var(--transition);
}

.project-links a:hover {
    background-color: var(--accent-blue);
    color: white;
    transform: translateY(-3px);
}

/* Contact Section */
.contact-container {
    display: flex;
    gap: 3rem;
    max-width: 1000px;
    margin: 0 auto;
    background-color: var(--bg-secondary);
    border-radius: var(--border-radius);
    padding: 2rem;
    box-shadow: var(--box-shadow);
}

.contact-info {
    flex: 1;
    padding: 1rem;
}

.contact-info h3 {
    font-size: 1.8rem;
    margin-bottom: 1.5rem;
    color: var(--accent-blue);
}

.contact-info p {
    margin-bottom: 1.5rem;
    display: flex;
    align-items: center;
    gap: 0.8rem;
    color: var(--text-secondary);
}

.contact-info i {
    color: var(--accent-cyan);
    width: 20px;
    text-align: center;
}

.contact-social {
    display: flex;
    gap: 1rem;
    margin-top: 2rem;
}

.contact-social a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background-color: var(--bg-tertiary);
    color: var(--text-primary);
    transition: var(--transition);
}

.contact-social a:hover {
    background-color: var(--accent-blue);
    color: white;
    transform: translateY(-3px);
    box-shadow: 0 5px 15px rgba(94, 129, 172, 0.4);
}

.contact-form {
    flex: 1;
    padding: 1rem;
}

.form-group {
    position: relative;
    margin-bottom: 1.5rem;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 1rem 0.5rem 0.5rem;
    border: none;
    border-bottom: 2px solid var(--bg-tertiary);
    background-color: transparent;
    color: var(--text-primary);
    font-family: inherit;
    font-size: 1rem;
    transition: var(--transition);
}

.form-group textarea {
    resize: vertical;
    min-height: 100px;
}

.form-group label {
    position: absolute;
    top: 1rem;
    left: 0.5rem;
    color: var(--text-secondary);
    transition: var(--transition);
    pointer-events: none;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-bottom-color: var(--accent-blue);
}

.form-group input:focus + label,
.form-group input:valid + label,
.form-group textarea:focus + label,
.form-group textarea:valid + label {
    top: 0;
    font-size: 0.8rem;
    color: var(--accent-blue);
}

.focus-border {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--accent-blue);
    transition: var(--transition);
}

.form-group input:focus ~ .focus-border,
.form-group textarea:focus ~ .focus-border {
    width: 100%;
}

/* Footer */
.footer {
    background-color: var(--bg-secondary);
    padding: 2rem 0;
    position: relative;
}

.footer-container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.footer-content {
    flex: 1;
}

.footer-logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--accent-cyan);
    margin-bottom: 0.5rem;
}

.footer-links {
    flex: 1;
    display: flex;
    justify-content: flex-end;
}

.footer-links ul {
    display: flex;
    gap: 1.5rem;
}

.footer-links a {
    transition: var(--transition);
    font-weight: 500;
}

.footer-links a:hover {
    color: var(--accent-blue);
}

.footer-social {
    display: flex;
    gap: 1rem;
    margin-top: 1rem;
}

.footer-social a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 35px;
    height: 35px;
    border-radius: 50%;
    background-color: var(--bg-tertiary);
    color: var(--text-primary);
    transition: var(--transition);
}

.footer-social a:hover {
    background-color: var(--accent-blue);
    color: white;
    transform: translateY(-3px);
}

.scroll-top {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background-color: var(--accent-blue);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    border: none;
    cursor: pointer;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    z-index: 999;
}

.scroll-top.active {
    opacity: 1;
    visibility: visible;
}

.scroll-top:hover {
    background-color: var(--accent-cyan);
    transform: translateY(-3px);
}

/* Animations */
@keyframes blink {
    0%, 100% { opacity: 1; }
    50% { opacity: 0; }
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% { transform: translateY(0) translateX(-50%); }
    40% { transform: translateY(-20px) translateX(-50%); }
    60% { transform: translateY(-10px) translateX(-50%); }
}

@keyframes rotate {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Responsive Styles */
@media (max-width: 992px) {
    .hero-title {
        font-size: 2.8rem;
    }
    
    .about-card {
        flex-direction: column;
    }
    
    .contact-container {
        flex-direction: column;
    }
}

@media (max-width: 768px) {
    .navbar-links {
        position: fixed;
        top: 80px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 80px);
        background-color: var(--bg-primary);
        transition: var(--transition);
        display: flex;
        justify-content: center;
        align-items: center;
    }
    
    .navbar-links.active {
        left: 0;
    }
    
    .navbar-links ul {
        flex-direction: column;
        align-items: center;
        gap: 2rem;
    }
    
    .navbar-toggler {
        display: block;
    }
    
    .hero-title {
        font-size: 2.2rem;
    }
    
    .hero-buttons {
        flex-direction: column;
        gap: 1rem;
    }
    
    .footer-container {
        flex-direction: column;
        gap: 1.5rem;
        text-align: center;
    }
    
    .footer-links {
        justify-content: center;
    }
    
    .footer-links ul {
        flex-wrap: wrap;
        justify-content: center;
    }
}

@media (max-width: 576px) {
    .hero-title {
        font-size: 1.8rem;
    }
    
    .hero-subtitle {
        font-size: 1rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .skills-tabs {
        flex-wrap: wrap;
    }
    
    .projects-container {
        grid-template-columns: 1fr;
    }
}