* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Poppins', sans-serif;
}

:root {
    --primary-color: #2c3e50;
    --secondary-color: #3498db;
    --accent-color: #e74c3c;
    --light-color: #ecf0f1;
    --dark-color: #2c3e50;
    --text-color: #333;
    --shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    --transition: all 0.3s ease;
}

html {
    scroll-behavior: smooth;
}

body {
    background-color: #f9f9f9;
    color: var(--text-color);
    line-height: 1.6;
    overflow-x: hidden;
}

.loader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: white;
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 9999;
    transition: var(--transition);
}

.loader-spinner {
    width: 50px;
    height: 50px;
    border: 5px solid rgba(52, 152, 219, 0.2);
    border-radius: 50%;
    border-top-color: var(--secondary-color);
    animation: spin 1s linear infinite;
}

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

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.95);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    z-index: 1000;
    transition: var(--transition);
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 2rem;
}

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

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

.nav-menu {
    display: flex;
    gap: 2rem;
}

.nav-link {
    color: var(--dark-color);
    text-decoration: none;
    font-weight: 500;
    position: relative;
    padding: 0.5rem 0;
    transition: var(--transition);
}

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

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

.nav-link:hover, .nav-link.active {
    color: var(--secondary-color);
}

.nav-toggle, .nav-close {
    display: none;
    cursor: pointer;
    font-size: 1.5rem;
}

.header {
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    padding-top: 80px;
    overflow: hidden;
}

.particles-container {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

.header-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    padding: 0 2rem;
    position: relative;
    z-index: 2;
}

.header-text {
    flex: 1;
    max-width: 600px;
}

.header-text h5 {
    font-size: 1.2rem;
    color: var(--secondary-color);
    margin-bottom: 1rem;
    opacity: 0;
    animation-delay: 0.3s;
}

.header-text h1 {
    font-size: 3.5rem;
    margin-bottom: 1rem;
    color: var(--primary-color);
    opacity: 0;
    animation-delay: 0.5s;
}

.header-text h3 {
    font-size: 1.8rem;
    margin-bottom: 1.5rem;
    color: var(--dark-color);
    opacity: 0;
    animation-delay: 0.7s;
}

.header-text p {
    margin-bottom: 2rem;
    opacity: 0;
    animation-delay: 0.9s;
}

.header-buttons {
    display: flex;
    gap: 1rem;
    opacity: 0;
    animation-delay: 1.1s;
}

.btn {
    padding: 0.8rem 1.5rem;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition);
    display: inline-block;
}

.btn-primary {
    background: var(--secondary-color);
    color: white;
    box-shadow: 0 4px 15px rgba(52, 152, 219, 0.3);
}

.btn-primary:hover {
    background: var(--primary-color);
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(52, 152, 219, 0.4);
}

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

.btn-secondary:hover {
    background: var(--secondary-color);
    color: white;
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(52, 152, 219, 0.4);
}

.header-image {
    flex: 1;
    display: flex;
    justify-content: center;
}

.image-container {
    position: relative;
    width: 350px;
    height: 350px;
}

.image-container img {
    width: 100%;
    height: 100%;
    border-radius: 50%;
    object-fit: cover;
    position: relative;
    z-index: 2;
}

.image-border {
    position: absolute;
    top: -10px;
    left: -10px;
    right: -10px;
    bottom: -10px;
    border: 3px solid var(--secondary-color);
    border-radius: 50%;
    animation: pulse 2s infinite;
}

.image-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(45deg, var(--secondary-color), transparent);
    border-radius: 50%;
    opacity: 0.2;
}

@keyframes pulse {
    0% { transform: scale(1); opacity: 1; }
    50% { transform: scale(1.05); opacity: 0.8; }
    100% { transform: scale(1); opacity: 1; }
}

.scroll-indicator {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    color: var(--dark-color);
    z-index: 2;
}

.scroll-indicator span {
    margin-bottom: 10px;
    font-size: 0.9rem;
}

.mouse {
    width: 26px;
    height: 40px;
    border: 2px solid var(--dark-color);
    border-radius: 15px;
    position: relative;
}

.wheel {
    width: 3px;
    height: 8px;
    background: var(--dark-color);
    position: absolute;
    top: 8px;
    left: 50%;
    transform: translateX(-50%);
    border-radius: 2px;
    animation: scroll 2s infinite;
}

@keyframes scroll {
    0% { opacity: 1; top: 8px; }
    100% { opacity: 0; top: 20px; }
}

.section {
    padding: 5rem 0;
}

.section-title {
    text-align: center;
    margin-bottom: 3rem;
    color: var(--primary-color);
    position: relative;
    padding-bottom: 1rem;
    font-size: 2.2rem;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 100px;
    height: 4px;
    background: var(--secondary-color);
    border-radius: 2px;
}

.about-content {
    display: flex;
    align-items: center;
    gap: 4rem;
}

.about-image {
    flex: 1;
    display: flex;
    justify-content: center;
}

.floating-image {
    width: 300px;
    height: 300px;
    border-radius: 20px;
    overflow: hidden;
    box-shadow: var(--shadow);
    animation: float 5s ease-in-out infinite;
}

.floating-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

@keyframes float {
    0% { transform: translateY(0); }
    50% { transform: translateY(-15px); }
    100% { transform: translateY(0); }
}

.about-text {
    flex: 1;
}

.about-text p {
    margin-bottom: 2rem;
    font-size: 1.1rem;
}

.info-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1.5rem;
}

.info-item {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    background: white;
    padding: 1.5rem;
    border-radius: 10px;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.info-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
}

.info-icon {
    font-size: 1.5rem;
    color: var(--secondary-color);
    padding: 1rem;
    background: rgba(52, 152, 219, 0.1);
    border-radius: 10px;
}

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

.info-content p {
    margin-bottom: 0.5rem;
    font-size: 1rem;
}

.timeline {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
}

.timeline::after {
    content: '';
    position: absolute;
    width: 6px;
    background-color: var(--secondary-color);
    top: 0;
    bottom: 0;
    left: 50%;
    margin-left: -3px;
    border-radius: 3px;
}

.timeline-item {
    padding: 10px 40px;
    position: relative;
    width: 50%;
    opacity: 0;
    animation: fadeInUp 1s forwards;
}

.timeline-item:nth-child(odd) {
    left: 0;
}

.timeline-item:nth-child(even) {
    left: 50%;
}

.timeline-content {
    padding: 20px;
    background-color: white;
    position: relative;
    border-radius: 10px;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.timeline-content:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
}

.timeline-date {
    font-weight: bold;
    color: var(--secondary-color);
    margin-bottom: 5px;
}

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

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

.skill-category {
    background: white;
    padding: 2rem;
    border-radius: 10px;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.skill-category:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
}

.category-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.category-header i {
    font-size: 2rem;
    color: var(--secondary-color);
}

.category-header h3 {
    color: var(--primary-color);
}

.skill-item {
    margin-bottom: 1.5rem;
}

.skill-name {
    display: flex;
    justify-content: space-between;
    margin-bottom: 0.5rem;
}

.skill-bar {
    height: 10px;
    background-color: #eee;
    border-radius: 5px;
    overflow: hidden;
}

.skill-progress {
    height: 100%;
    background: linear-gradient(90deg, var(--secondary-color), var(--primary-color));
    border-radius: 5px;
    width: 0;
    transition: width 1.5s ease-in-out;
}

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

.org-card {
    background: white;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    padding: 2rem;
}

.org-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
}

.org-icon {
    font-size: 2.5rem;
    color: var(--secondary-color);
    margin-bottom: 1rem;
    padding: 1rem;
    background: rgba(52, 152, 219, 0.1);
    border-radius: 50%;
}

.org-content {
    flex: 1;
}

.org-date {
    color: var(--secondary-color);
    font-weight: bold;
    margin-bottom: 0.5rem;
}

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

.org-place {
    color: var(--dark-color);
    margin-bottom: 1rem;
    font-style: italic;
}

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

.contact-info {
    background: white;
    padding: 2rem;
    border-radius: 10px;
    box-shadow: var(--shadow);
}

.contact-item {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.contact-icon {
    font-size: 1.5rem;
    color: var(--secondary-color);
    padding: 1rem;
    background: rgba(52, 152, 219, 0.1);
    border-radius: 50%;
}

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

.contact-form {
    background: white;
    padding: 2rem;
    border-radius: 10px;
    box-shadow: var(--shadow);
}

.contact-form h3 {
    margin-bottom: 1.5rem;
    color: var(--primary-color);
    text-align: center;
}

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

.form-group input, .form-group textarea {
    width: 100%;
    padding: 1rem;
    border: 1px solid #ddd;
    border-radius: 5px;
    font-size: 1rem;
    transition: var(--transition);
}

.form-group input:focus, .form-group textarea:focus {
    border-color: var(--secondary-color);
    outline: none;
    box-shadow: 0 0 0 3px rgba(52, 152, 219, 0.2);
}

.footer {
    background: var(--primary-color);
    color: white;
    padding: 3rem 0 1rem;
}

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

.footer-info p {
    margin: 1rem 0;
}

.footer-logo {
    font-size: 1.8rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

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

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

.social-icons a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    color: white;
    transition: var(--transition);
}

.social-icons a:hover {
    background: var(--secondary-color);
    transform: translateY(-3px);
}

.footer-links {
    display: flex;
    flex-direction: column;
}

.footer-links h3 {
    margin-bottom: 1rem;
    position: relative;
    padding-bottom: 0.5rem;
}

.footer-links h3::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 50px;
    height: 2px;
    background: var(--secondary-color);
}

.footer-links a {
    color: #ddd;
    text-decoration: none;
    margin-bottom: 0.8rem;
    transition: var(--transition);
}

.footer-links a:hover {
    color: var(--secondary-color);
    transform: translateX(5px);
}

.footer-newsletter h3 {
    margin-bottom: 1rem;
    position: relative;
    padding-bottom: 0.5rem;
}

.footer-newsletter h3::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 50px;
    height: 2px;
    background: var(--secondary-color);
}

.footer-newsletter p {
    margin-bottom: 1rem;
}

.footer-newsletter form {
    display: flex;
}

.footer-newsletter input {
    flex: 1;
    padding: 0.8rem;
    border: none;
    border-radius: 5px 0 0 5px;
}

.footer-newsletter button {
    padding: 0 1rem;
    background: var(--secondary-color);
    color: white;
    border: none;
    border-radius: 0 5px 5px 0;
    cursor: pointer;
    transition: var(--transition);
}

.footer-newsletter button:hover {
    background: #2980b9;
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.back-to-top {
    position: fixed;
    bottom: 20px;
    right: 20px;
    background: var(--secondary-color);
    color: white;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 1.5rem;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    box-shadow: var(--shadow);
    z-index: 1000;
}

.back-to-top.show {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    background: var(--primary-color);
    transform: translateY(-3px);
}

@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(30px); }
    to { opacity: 1; transform: translateY(0); }
}

@media screen and (max-width: 992px) {
    .header-content {
        flex-direction: column;
        text-align: center;
        gap: 3rem;
    }

    .header-text {
        max-width: 100%;
    }

    .header-buttons {
        justify-content: center;
    }

    .about-content {
        flex-direction: column;
        gap: 2rem;
    }

    .timeline::after {
        left: 31px;
    }

    .timeline-item {
        width: 100%;
        padding-left: 70px;
        padding-right: 25px;
    }

    .timeline-item:nth-child(even) {
        left: 0;
    }
}

@media screen and (max-width: 768px) {
    .nav-menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 70%;
        height: 100vh;
        background: white;
        flex-direction: column;
        justify-content: center;
        align-items: center;
        transition: var(--transition);
        box-shadow: -5px 0 15px rgba(0, 0, 0, 0.1);
    }

    .nav-menu.show {
        right: 0;
    }

    .nav-toggle, .nav-close {
        display: block;
    }

    .nav-close {
        position: absolute;
        top: 20px;
        right: 20px;
    }

    .header-text h1 {
        font-size: 2.5rem;
    }

    .header-text h3 {
        font-size: 1.5rem;
    }

    .image-container {
        width: 250px;
        height: 250px;
    }

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

@media screen and (max-width: 576px) {
    .header-text h1 {
        font-size: 2rem;
    }

    .header-text h3 {
        font-size: 1.2rem;
    }

    .btn {
        padding: 0.6rem 1.2rem;
    }

    .info-item {
        flex-direction: column;
        text-align: center;
    }

    .contact-item {
        flex-direction: column;
        text-align: center;
        align-items: center;
    }

    .footer-newsletter form {
        flex-direction: column;
    }

    .footer-newsletter input {
        border-radius: 5px;
        margin-bottom: 0.5rem;
    }

    .footer-newsletter button {
        border-radius: 5px;
        padding: 0.8rem;
    }
}