/* Base Styles */
:root {
    --primary-bg: #121212;
    --secondary-bg: #1e1e1e;
    --card-bg: #252525;
    --primary-text: #ffffff;
    --secondary-text: #b3b3b3;
    --accent-color: #bb86fc;
    --accent-secondary: #03dac6;
    --error-color: #cf6679;
    --success-color: #4caf50;
}

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

body {
    font-family: 'Inter', 'Roboto', sans-serif;
    background-color: var(--primary-bg);
    color: var(--primary-text);
    line-height: 1.6;
    overflow-x: hidden;
}

a {
    color: var(--accent-color);
    text-decoration: none;
    transition: color 0.3s ease;
}

a:hover {
    color: var(--accent-secondary);
}

h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    margin-bottom: 1rem;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 15px;
}

.section {
    padding: 5rem 0;
}

.section-title {
    font-size: 2.5rem;
    margin-bottom: 2.5rem;
    text-align: center;
    position: relative;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 50px;
    height: 3px;
    background-color: var(--accent-color);
}

/* Navigation */
.navbar {
    background-color: rgba(18, 18, 18, 0.95);
    padding: 1rem 0;
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    transition: all 0.3s ease;
}

.navbar.scrolled {
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
    padding: 0.8rem 0;
}

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

.logo {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--primary-text);
}

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

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

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

.nav-links a {
    color: var(--primary-text);
    font-weight: 500;
    position: relative;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--accent-color);
    transition: width 0.3s ease;
}

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

.hamburger {
    display: none;
    cursor: pointer;
}

.hamburger div {
    width: 25px;
    height: 3px;
    background-color: var(--primary-text);
    margin: 5px;
    transition: all 0.3s ease;
}

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

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(187, 134, 252, 0.1) 0%, rgba(3, 218, 198, 0.1) 100%);
    z-index: 0;
}

.hero-content {
    z-index: 1;
    max-width: 800px;
}

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

.hero-subtitle {
    font-size: 1.5rem;
    margin-bottom: 2rem;
    color: var(--secondary-text);
}

.hero-cta {
    display: inline-block;
    background-color: var(--accent-color);
    color: var(--primary-bg);
    padding: 12px 30px;
    border-radius: 5px;
    font-weight: 700;
    font-size: 1.1rem;
    transition: all 0.3s ease;
}

.hero-cta:hover {
    background-color: var(--accent-secondary);
    transform: translateY(-3px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.2);
}

/* Experience Section */
.experience-card {
    background-color: var(--card-bg);
    border-radius: 10px;
    padding: 2rem;
    margin-bottom: 2rem;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

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

.experience-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 1rem;
}

.experience-title {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
}

.experience-company {
    font-size: 1.2rem;
    color: var(--accent-color);
    margin-bottom: 0.5rem;
}

.experience-date {
    color: var(--secondary-text);
    font-size: 0.9rem;
}

.experience-description {
    color: var(--secondary-text);
}

/* Seminars Section */
.seminars-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 2rem;
}

.seminar-card {
    background-color: var(--card-bg);
    border-radius: 10px;
    padding: 2rem;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

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

.seminar-title {
    font-size: 1.3rem;
    margin-bottom: 0.5rem;
}

.seminar-details {
    display: flex;
    justify-content: space-between;
    margin-bottom: 1rem;
}

.seminar-date, .seminar-location {
    color: var(--secondary-text);
    font-size: 0.9rem;
}

.seminar-description {
    color: var(--secondary-text);
}

/* Tech Stack Section */
.tech-tabs {
    display: flex;
    justify-content: center;
    margin-bottom: 2rem;
    flex-wrap: wrap;
}

.tech-tab {
    background: transparent;
    border: none;
    color: var(--secondary-text);
    padding: 0.5rem 1rem;
    margin: 0 0.5rem 1rem;
    cursor: pointer;
    font-size: 1rem;
    border-radius: 5px;
    transition: all 0.3s ease;
}

.tech-tab:hover, .tech-tab.active {
    color: var(--primary-text);
    background-color: var(--card-bg);
}

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

.tech-card {
    background-color: var(--card-bg);
    border-radius: 10px;
    padding: 1.5rem;
    text-align: center;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

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

.tech-icon {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    color: var(--accent-color);
}

.tech-name {
    font-size: 1.2rem;
    margin-bottom: 0.5rem;
}

.tech-category {
    color: var(--secondary-text);
    font-size: 0.9rem;
    margin-bottom: 1rem;
}

.progress-bar {
    width: 100%;
    height: 10px;
    background-color: var(--secondary-bg);
    border-radius: 5px;
    overflow: hidden;
}

.progress {
    height: 100%;
    background-color: var(--accent-color);
    border-radius: 5px;
    transition: width 1s ease;
}

/* Contact Section */
.contact-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 3rem;
}

.contact-info {
    display: flex;
    flex-direction: column;
}

.contact-item {
    display: flex;
    align-items: center;
    margin-bottom: 1.5rem;
}

.contact-icon {
    font-size: 1.5rem;
    margin-right: 1rem;
    color: var(--accent-color);
}

.contact-text {
    color: var(--secondary-text);
}

.contact-form {
    background-color: var(--card-bg);
    padding: 2rem;
    border-radius: 10px;
}

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

.form-label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
}

.form-input, .form-textarea {
    width: 100%;
    padding: 0.8rem;
    border: 1px solid var(--secondary-bg);
    background-color: rgba(255, 255, 255, 0.1);
    color: var(--primary-text);
    border-radius: 5px;
    font-family: inherit;
}

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

.form-textarea {
    resize: vertical;
    min-height: 150px;
}

.submit-btn {
    background-color: var(--accent-color);
    color: var(--primary-bg);
    border: none;
    padding: 12px 30px;
    border-radius: 5px;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.3s ease;
}

.submit-btn:hover {
    background-color: var(--accent-secondary);
    transform: translateY(-3px);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
}

/* Blog Section */
.blog-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 2rem;
}

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

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

.blog-img {
    width: 100%;
    height: 200px;
    object-fit: cover;
}

.blog-content {
    padding: 1.5rem;
}

.blog-title {
    font-size: 1.3rem;
    margin-bottom: 0.5rem;
}

.blog-date {
    color: var(--secondary-text);
    font-size: 0.9rem;
    margin-bottom: 1rem;
}

.blog-excerpt {
    color: var(--secondary-text);
    margin-bottom: 1.5rem;
}

.read-more {
    display: inline-block;
    color: var(--accent-color);
    font-weight: 500;
    transition: color 0.3s ease;
}

.read-more:hover {
    color: var(--accent-secondary);
}

/* Blog Post Page */
.blog-post {
    max-width: 800px;
    margin: 0 auto;
    padding: 2rem;
    background-color: var(--card-bg);
    border-radius: 10px;
}

.blog-post-header {
    margin-bottom: 2rem;
}

.blog-post-title {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.blog-post-meta {
    color: var(--secondary-text);
    font-size: 1rem;
    margin-bottom: 2rem;
}

.blog-post-content {
    line-height: 1.8;
}

.blog-post-content h2 {
    font-size: 1.8rem;
    margin-top: 2rem;
    margin-bottom: 1rem;
}

.blog-post-content h3 {
    font-size: 1.4rem;
    margin-top: 1.5rem;
    margin-bottom: 0.8rem;
}

.blog-post-content p {
    margin-bottom: 1.5rem;
}

.blog-post-content ul, .blog-post-content ol {
    margin-bottom: 1.5rem;
    padding-left: 2rem;
}

.blog-post-content li {
    margin-bottom: 0.5rem;
}

.blog-post-content pre {
    background-color: var(--secondary-bg);
    padding: 1.5rem;
    border-radius: 5px;
    overflow-x: auto;
    margin-bottom: 1.5rem;
}

.blog-post-content code {
    font-family: 'Fira Code', monospace;
}

.blog-back {
    display: inline-block;
    margin-top: 2rem;
    margin-bottom: 1rem;
    color: var(--accent-color);
    font-weight: 500;
}

/* Footer */
.footer {
    background-color: var(--secondary-bg);
    padding: 3rem 0;
    margin-top: 5rem;
}

.footer-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
}

.footer-logo {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.footer-logo span {
    color: var(--accent-color);
}

.footer-about {
    color: var(--secondary-text);
    margin-bottom: 1.5rem;
}

.footer-heading {
    font-size: 1.2rem;
    margin-bottom: 1.5rem;
}

.footer-links {
    list-style: none;
}

.footer-link {
    margin-bottom: 0.8rem;
}

.footer-link a {
    color: var(--secondary-text);
    transition: color 0.3s ease;
}

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

.social-links {
    display: flex;
}

.social-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background-color: rgba(255, 255, 255, 0.1);
    margin-right: 1rem;
    transition: all 0.3s ease;
}

.social-link:hover {
    background-color: var(--accent-color);
    transform: translateY(-3px);
}

.social-icon {
    color: var(--primary-text);
    font-size: 1.2rem;
}

.copyright {
    text-align: center;
    padding-top: 2rem;
    margin-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: var(--secondary-text);
}

/* Animations */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in {
    animation: fadeIn 1s ease forwards;
}

.fade-in-1 {
    animation-delay: 0.2s;
}

.fade-in-2 {
    animation-delay: 0.4s;
}

.fade-in-3 {
    animation-delay: 0.6s;
}

/* Flash Messages */
.flash-messages {
    position: fixed;
    top: 80px;
    right: 20px;
    z-index: 1000;
    width: 300px;
}

.flash-message {
    padding: 15px;
    margin-bottom: 15px;
    border-radius: 5px;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
    animation: slideIn 0.3s ease forwards;
}

.flash-message.success {
    background-color: rgba(76, 175, 80, 0.8);
    border-left: 5px solid var(--success-color);
}

.flash-message.error {
    background-color: rgba(207, 102, 121, 0.8);
    border-left: 5px solid var(--error-color);
}

@keyframes slideIn {
    from {
        transform: translateX(100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

/* 404 and 500 Pages */
.error-page {
    height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
}

.error-code {
    font-size: 8rem;
    font-weight: 700;
    color: var(--accent-color);
    margin-bottom: 1rem;
}

.error-message {
    font-size: 2rem;
    margin-bottom: 2rem;
}

.error-description {
    color: var(--secondary-text);
    max-width: 500px;
    margin-bottom: 2rem;
}

.back-home {
    display: inline-block;
    background-color: var(--accent-color);
    color: var(--primary-bg);
    padding: 12px 30px;
    border-radius: 5px;
    font-weight: 700;
    transition: all 0.3s ease;
}

.back-home:hover {
    background-color: var(--accent-secondary);
    transform: translateY(-3px);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
}

/* Media Queries */
@media screen and (max-width: 1024px) {
    .section-title {
        font-size: 2.2rem;
    }

    .hero-title {
        font-size: 3rem;
    }

    .hero-subtitle {
        font-size: 1.3rem;
    }
}

@media screen and (max-width: 768px) {
    .section {
        padding: 4rem 0;
    }

    .section-title {
        font-size: 2rem;
    }

    .hero-title {
        font-size: 2.5rem;
    }

    .hero-subtitle {
        font-size: 1.2rem;
    }

    .blog-post-title {
        font-size: 2rem;
    }

    .nav-links {
        position: absolute;
        right: 0;
        top: 70px;
        background-color: var(--secondary-bg);
        flex-direction: column;
        width: 50%;
        transform: translateX(100%);
        transition: transform 0.5s ease-in;
        box-shadow: 0 5px 15px rgba(0, 0, 0, 0.3);
    }

    .nav-links li {
        margin: 1.5rem 0;
        text-align: center;
    }

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

    .hamburger {
        display: block;
    }

    .hamburger.active .line1 {
        transform: rotate(-45deg) translate(-5px, 6px);
    }

    .hamburger.active .line2 {
        opacity: 0;
    }

    .hamburger.active .line3 {
        transform: rotate(45deg) translate(-5px, -6px);
    }

    .contact-container {
        grid-template-columns: 1fr;
    }

    .footer-container {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .social-links {
        justify-content: center;
    }
}

@media screen and (max-width: 480px) {
    .section {
        padding: 3rem 0;
    }

    .section-title {
        font-size: 1.8rem;
    }

    .hero-title {
        font-size: 2rem;
    }

    .hero-subtitle {
        font-size: 1rem;
    }

    .nav-links {
        width: 70%;
    }

    .seminars-grid,
    .tech-grid,
    .blog-grid {
        grid-template-columns: 1fr;
    }

    .blog-post-title {
        font-size: 1.8rem;
    }

    .error-code {
        font-size: 6rem;
    }

    .error-message {
        font-size: 1.5rem;
    }
}